HEAT EXCHANGING APPARATUS AND MANUFACTURING METHOD THEREFOR

Abstract

A heat exchange apparatus and a manufacturing method therefor are disclosed. The heat exchange apparatus comprises a valve core part and a core body part. The valve core part is provided with a valve base part. The valve seat part is at least partly arranged in a first conduit. The valve base part is provided with a base section with a bottom opening and a middle section with a peripheral opening. The valve base part is provided with a throttling hole. The throttling hole is in communication with the peripheral opening and the bottom opening. The middle section is arranged on a sheet part and the peripheral opening is in communication with inter-sheets channels. The heat exchanging apparatus comprising a connecting element. The connecting element is at least partly inserted into the first conduit. The bottom opening is in communication with a connecting cavity.

Description

This disclosure is a national phase application of PCT international patent application PCT/CN2021/090451, filed on Apr. 28, 2021 which claims the benefit of priorities to the following three Chinese patent applications, all of which are incorporated herein by reference,

• • 1) Chinese Patent Application No. 202010362743.9, titled “HEAT EXCHANGE APPARATUS”, filed with the China National Intellectual Property Administration on Apr. 30, 2020;
  • 2) Chinese Patent Application No. 202010362753.2, titled “HEAT EXCHANGE APPARATUS AND MANUFACTURING METHOD THEREFOR”, filed with the China National Intellectual Property Administration on Apr. 30, 2020; and
  • 3) Chinese Patent Application No. 202010363934.7, titled “HEAT EXCHANGE APPARATUS”, filed with the China National Intellectual Property Administration on Apr. 30, 2020.

FIELD

The present disclosure relates to the technical field of thermal management, and in particular to a heat exchange apparatus.

BACKGROUND

A heat exchanger and an expansion valve are required in a thermal management system, and the two members are generally connected by pipeline connection in the thermal management system.

The heat exchanger can also be integrated with the expansion valve, and a valve body of the expansion valve is fixed to the heat exchanger, so that an overall structure is compact. However, a part of connecting pipes is still connected to the valve body of the expansion valve.

SUMMARY

An object according to the present disclosure is to provide a heat exchange apparatus with a compact structure and a manufacturing method therefor.

A heat exchange apparatus is provided according to an embodiment of the present disclosure, which includes a valve core member, a core body member, and the valve core member is arranged fixed to the core body member;

the core body member includes a sheet portion, the sheet portion includes at least a first conduit, a second conduit and an inter-sheets passage, the first conduit, the inter-sheets passage and the second conduit are in communication;

the valve core member includes a valve seat portion, the valve seat portion includes a bottom section and a middle section, the bottom section includes a bottom opening, the middle section includes a peripheral opening, the valve seat portion includes a throttle hole, the peripheral opening is in communication with the bottom opening through the throttle hole, the middle section and the bottom section are located in the first conduit, and the peripheral opening is in communication with the first conduit;

the heat exchange apparatus includes a connecting member, the connecting member includes a communication cavity, the connecting member includes a first end portion, the first end portion of the connecting member is located in the first conduit, the bottom opening of the bottom section is in communication with the communication cavity;

the core body member includes a first side portion and a second side portion, at least part of the valve core member is located on a side where the first side portion is located, the heat exchange apparatus includes a communication passage, the communication passage is located on a side where the second side portion is located, and the communication passage is in communication with the communication cavity.

A manufacturing method for a heat exchange apparatus is further provided according to the present disclosure, which includes:

provide a sheet portion, and put the stacked sheet portion into a furnace for welding, in which the welded sheet portion includes a first conduit, a second conduit and an inter-sheets passage;

provide a valve core member and a connecting member, protrude part of a valve seat portion of the valve core member into the first conduit of the welded sheet portion, in which the valve seat portion includes a bottom section and a middle section and the middle section includes a peripheral opening, protrude part of the bottom section into the connecting member, sealingly connect the bottom section with the connecting member by providing a first sealing member, and assemble and fix the valve core member and the connecting member; and

assemble and fix the valve core member and the core body member.

The heat exchange apparatus and the manufacturing method therefor are provided according to the embodiments of the present disclosure, the bottom section and the middle section of the heat exchange apparatus are located in the first conduit, the bottom section of the valve seat portion includes the bottom opening, the middle section includes the peripheral opening, the peripheral opening is in communication with the first conduit, and the bottom opening is in communication with the communication cavity, and the communication passage of the heat exchange apparatus is in communication with the communication cavity, so that the heat exchange apparatus has a compact structure. In addition, if an external connecting pipe needs to be connected, the mounting of the external connecting pipe is relatively simple.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural view of a first embodiment of a heat exchange apparatus;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a schematic perspective exploded view of FIG. 1;

FIG. 4 is a schematic cross-sectional view of a second embodiment of the heat exchange apparatus;

FIG. 5 is a schematic perspective exploded view of the heat exchange apparatus shown in FIG. 4;

FIG. 6 is a schematic cross-sectional view of a third embodiment of the heat exchange apparatus;

FIG. 7 is a schematic perspective exploded view of the heat exchange apparatus shown in FIG. 6;

FIG. 8 is a schematic partial cross-sectional view of a fourth embodiment of the heat exchange apparatus, in which a structure of a sheet portion is omitted;

FIG. 9 is a schematic partial cross-sectional view of a fifth embodiment of the heat exchange apparatus, in which the structure of the sheet portion is omitted;

FIG. 10 is a schematic cross-sectional view of a sixth embodiment of the heat exchange apparatus;

FIG. 11 is a schematic cross-sectional view of a seventh embodiment of the heat exchange apparatus;

FIG. 12 is a schematic cross-sectional view of an eighth embodiment of the heat exchange apparatus;

FIG. 13 is a schematic partial cross-sectional view of a ninth embodiment of the heat exchange apparatus, in which a matching mode of a connecting member and the sheet portion is illustrated;

FIG. 14 is a schematic partial cross-sectional view of a tenth embodiment of the heat exchange apparatus, in which a matching mode of the connecting member and a bottom pressing block is illustrated;

FIG. 15 is a schematic cross-sectional view of an eleventh embodiment of the heat exchange apparatus; and

FIG. 16 is a schematic cross-sectional view of a twelfth embodiment of the heat exchange apparatus.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Referring to FIGS. 1 to 3, FIG. 1 is a schematic structural view of a heat exchange apparatus 1.

The heat exchange apparatus 1 includes at least a first flow passage 101 and a second flow passage, a fluid in the first flow passage 101 can exchange heat with a fluid in the second flow passage; the fluid in the first flow passage 101 may be a refrigerant, and the fluid in the second flow passage may be a coolant. The heat exchange apparatus 1 may further include a third flow passage, a fourth flow passage, and the like.

The heat exchange apparatus 1 includes a valve core member 11, a core body member 12 and a connecting member 13, where the valve core member 11 is assembled with and fixed to the core body member 12, and the connecting member 13 is arranged fixed to the core body member 12, such as by welding. The valve core member 11 may have, for example, a valve core structure of an expansion valve.

The core body member 12 includes a top pressing block 122, a sheet portion 121 and a bottom pressing block 123, where the top pressing block 122, the sheet portion 121 and the bottom pressing block 123 are fixed by welding. The sheet portion 121 includes at least a first conduit 1211, a second conduit 1213 and an inter-sheets passage 1212, the first conduit 1211, the inter-sheets passage 1212 and the second conduit 1213 are in communication, and the first flow passage 101 includes part of the first conduit 1211, the second conduit 1213 and the inter-sheets passage 1212.

Herein, the first conduit 1211 and the second conduit 1213 are conduits when the core body member 12 is not assembled with the valve core member 11. Even if a member or part is located inside other members after the first conduit 1211 and the second conduit 1213 are assembled with the valve core member or the connecting member, it still means that the member or the part herein is located in the first conduit or the second conduit as long as a position of the member is in the first conduit or the second conduit of the core body member.

The sheet portion 121 includes multiple stacked sheets, adjacent sheets are fixed by welding, each sheet includes at least a first hole and a second hole, the first holes of the sheets are aligned and the second holes of the sheets are aligned along a stacking direction of the sheets. The first hole and the second hole are located adjacent to an edge of the sheet, so that the fluid flowing through the sheet can have a relatively long flow path, which is beneficial to improving the heat exchange efficiency. The first holes of the sheets are aligned to form a part of the first conduit 1211, and the second holes of the sheets are aligned to form a part of the second conduit 1213.

The top pressing block 122 includes a third hole 1221, which is aligned with the first holes, and the “aligned” herein includes that an axis of the first holes is coaxial with or parallel to an axis of the third hole; the bottom pressing bock 123 includes a communication hole 1231, which is aligned with the first holes, and the “aligned” herein includes that the axis of the first holes is coaxial with or parallel to the axis of the communication hole.

The heat exchange apparatus 1 includes a communication passage 103 and another communication passage 104, the communication passage 103 is in communication with a communication cavity 138 of the connecting member 13, and the another communication passage 104 is in communication with the second conduit 1213, so that the fluid can flow in from the communication passage 103 and flow through the communication cavity 138 of the connecting member 13, and flow in the first flow passage after being throttled by the valve core member 11, and then flow in the inter-sheets passage 1212 of the core body member 12, and the fluid exchanges heat with the fluid in the second flow passage in the inter-sheets passage 1212, which has a simple flow path and high heat exchange efficiency. Of course, in other cases, the other communication passage 104 may be not in direct communication with the second conduit 1213. For example, a pipe may be provided in the second conduit 1213, and the second conduit 1213 is in communication with the other communication passage 104 through the pipe. In other cases, the another communication passage 104 may be not in communication with the inter-sheets passage 1212 through the second conduit 1213, the another communication passage 104 and the communication passage 103 may be arranged on a same side of the core body member 12, and the another communication passage 104 may be adjacent to the communication passage 103 and be not in direct communication with the communication passage 103.

The core body member 12 includes a first side portion 124 and a second side portion 126, at least part of the valve core member 11 is located on a side where the first side portion 124 is located, or in other words, the first side portion 124 of the core body member 12 refers to a side of the core body member 12 provided with the valve core member 11. The communication passage 103 is located on a side where the second side portion 126 is located, and the communication passage 103 is in communication with the communication cavity 138. For example, the valve core member 11 includes a coil portion 1120, and the coil portion 1120 is located on the side where the first side portion 124 is located.

At least part of the valve core member 11 protrudes into the first conduit 1211, and at least part of the connecting member 13 protrudes into the first conduit 1211. The valve core member 11 includes a valve seat portion 111, at least part of the valve seat portion 111 is located at the first conduit 1211, the valve seat portion 111 includes a peripheral opening 1113, a throttle hole 1114 and a bottom opening 1115, where the peripheral opening 1113 is in communication with the first conduit 1211 and in communication with the inter-sheets passage 1212, the connecting member 13 includes the communication cavity 138, one end of the connecting member 13 is located in the first conduit 1211, the bottom opening 1115 is in communication with the communication cavity 138, and the communication cavity 138 is not in direct communication with the first conduit 1211. The valve core member 11 may be a valve core portion of an electronic expansion valve. As such, the fluid from the communication cavity 138 of the connecting member 13 can flow in the inter-sheets passage 1212 through the bottom opening 1115, the throttle hole 1114, the peripheral opening 1113 and the first conduit 1211, so that the fluid can exchange heat with the fluid between adjacent sheets inside the sheet portion 121. The peripheral opening 1113 may be in direct communication with the first conduit 1211, or may be in direct communication with the inter-sheets passage 1212.

Herein, the communication cavity 138 is not in direct communication with the first conduit 1211, which does not exclude a transfer communication between the communication cavity 138 and the first conduit 1211 by a flow passage provided by other members.

The connecting member 13 includes an annular wall portion 131, the valve seat portion 111 is arranged sealed to the annular wall portion 131, and the sealing form may be a radial sealing or an axial sealing.

The valve seat portion 111 includes a bottom section 1111 and a middle section 1112, the bottom section 1111 includes the bottom opening 1115, the bottom section 1111 is located inside the connecting member 13, and a peripheral side of the bottom section 1111 is arranged sealed to the annular wall portion 131 of the connecting member 13. The middle section 1112 includes the peripheral opening 1113, the middle section 1112 is relatively closer to the first side portion 124 of the core body member 12 than the bottom section 1111 in a stacking direction of the core body member 12, the middle section 1112 is located in the sheet portion 121, and the peripheral opening 1113 is in communication with the first conduit. As such, the depth which the valve core member 11 is assembled to the core body member 12 is relatively great, which is beneficial to reducing a height of the valve core member 11 protruding from the core body member 12, and the overall structure is more compact. When the valve core member 11 is in an open state, the communication passage 103, the communication cavity 138, the bottom opening 1115, the throttle hole 1114, the peripheral opening 1113, the first conduit 1211, the inter-sheets passage 1212 and the second conduit 1213 are in communication.

It should be noted that the bottom section and the middle section herein are merely defined literally, and are not limited to their structures.

The connecting member 13 includes a valve seat matching portion 132 and a drainage pipe 133, the valve seat matching portion 132 is arranged fixed to the valve seat portion 133, such as by welding or other fixing methods such as by riveting. The valve seat matching portion 132 is provided with the annular wall portion 131, and a height of the annular wall portion 131 is greater than a height of the bottom section 1111 along the stacking direction of the sheets of the core body member 12. A first groove 1116 is provided in the bottom section 1111, the heat exchange apparatus 1 includes a first sealing member 14, which is located in the first groove 1116, and closely abuts against the annular wall portion 131 to realize sealing between the first sealing member 14 and the annular wall portion 131, which effectively avoids the leakage between the bottom section 1111 and the annular wall portion 131.

The valve seat matching portion 132 includes a side hole 1321, and the side hole 1321 is relatively closer to the first side portion 124 of the core body member 12 than the annular wall portion along the stacking direction of the sheets of the core body member 12. The side hole 1321 corresponds to the peripheral opening 1113 of the valve core member 11. As such, the fluid flows in from the bottom opening 1115 of the valve core member 11 through the drainage pipe 133, and flows in the first conduit 1211 through the throttle hole 1114, the peripheral opening 1113 and the side hole 1321, and then flows in the inter-sheets passage 1212 in communication with the first conduit 1211 to exchange heat with the fluid in the second flow passage. The throttling and depressurization of the refrigerant are conducted inside the core body member 12, and the link with the subsequent heat exchange process is smooth, which reduces the influences of factors such as gas-liquid stratification of the refrigerant after throttling and depressurization in a long pipeline to the heat exchange efficiency of the subsequent heat exchange by the pipeline arrangement.

The connecting member 13 is fixed to the core body member 12 by welding, the core body member 12 includes a welding matching portion 125, which is fixed to an outer wall of the connecting member 13 by welding, and a thickness of the welding matching portion 125 is greater than a thickness of at least two stacked sheets along an extending direction of the first conduit 1211. As such, during the welding shrinkage process of the core body member 12, since the welding matching portion 125 has the thickness greater than two stacked sheets, the connecting member 13 can be well welded to the welding matching portion 125 during welding, which is beneficial to the stability of sealing.

The valve seat matching portion 132 includes a flange portion 1322, and the flange portion 1322 is fixed to the core body member 12 by welding. The sheets of the core body member 12 include a first sheet 1214a and a second sheet 1215a, the first sheet 1214a is fixed to the second sheet 1215a by welding, a top or a bottom of the flange portion 1322 is fixed to the first sheet 1214a by welding; or the top or the bottom of the flange portion 1322 is fixed to the second sheet 1215a by welding.

The core body member 12 includes a top pressing block 122, the flange portion 1322 is fixed to the top pressing block 122 by welding, and the valve seat portion 111 of the valve core member 11 protrudes in from the third hole 1221 of the top pressing block 122. The valve seat matching portion 132 and the sheet portion 121 are fixed and limited by the flange portion 1322. The flange portion 1322 is fixed to the top pressing block 122 of the core body member 12 when the sheet portion 121 shrinks during welding, and thus it can ensure the certainty of a position of the valve seat matching portion 132 in the core body member 12, and reduce the risk of affecting the position of the valve seat matching portion 132 after the sheets shrink and reduce the risk of fluid leakage between the valve seat matching portion 132 and the valve seat.

The core body member 12 includes the bottom pressing block 123, part of the connecting member 13 protrudes into the bottom pressing block 123, the bottom pressing block 123 includes the welding matching portion 125, the welding matching portion 125 includes a welding section 1352, which is fixed to the bottom pressing block 123 by welding, the connecting member 13 includes a firs end portion 134, and the first end portion 134 is welded to the core body member 12 by welding. As such, the connecting member 13 can be fixed to the core body member by welding during the welding of the core body member, and the welding can be completed at one time, and the processing is convenient.

The valve seat matching portion 132 includes a bottom end portion 1328, the drainage pipe 133 is fixed to the bottom end portion 1328 by welding, and at least part of the drainage pipe 133 protrudes into the valve seat matching portion 132; the drainage pipe 133 includes a first portion 1331 and a second portion 1332, at least part of the first portion 1331 protrudes into the valve seat matching portion 132, and the at least part of the first portion 1331 is fixed to the valve seat matching portion 132 by welding. The second end portion of the connecting member 13 is arranged in the second portion 1332 of the drainage pipe 133, and part of the second portion 1332 of the drainage pipe 133 is located in the welding matching portion 125 and is fixed to the welding matching portion 125 by welding.

The bottom pressing block 123 includes a protrusion 1232, the protrusion 1232 protrudes into the first conduit 1211, the protrusion 1232 includes the communication hole 1231 which is in communication with the communication cavity 138, the welding matching portion 125 is arranged in an inner wall of the protrusion 1232, the second portion 1332 protrudes into the communication hole 1231 of the protrusion 1232, and an outer wall of the protrusion 1232 is fixed to the sheet portion 121 by welding.

The drainage pipe 133 includes an external expansion portion 1333, the external expansion portion 1333 does not protrude into the valve seat matching portion 132 and the valve seat matching portion 132 is relatively closer to the bottom section 1111 than the external expansion portion 1333 along a stacking direction of the core body member, and the external expansion portion 1333 is matched with the bottom end portion 1328 of the valve seat matching portion 132 for limiting. As such, since the sheet portion 121 shrinks during the welding of the core body member 12, by providing the external expansion portion 1333, the drainage pipe 133 will be blocked by the external expansion portion 1333 and the bottom end portion of the valve seat matching portion 132 in case that the drainage pipe 133 moves upward toward the valve seat matching portion 132, so that a position of the drainage pipe 133 protruding into the valve seat matching portion 132 is determined, which reduces the risk of sealing fit between the bottom section 1111 and the connecting member 13 caused by the excessive depth of the drainage pipe 133 protruding into the valve seat matching portion 132, and reduces the influence on the flow passage between the bottom section 1111 and the drainage pipe 133.

Furthermore, the flange portion 1322 includes a limiting groove 1323, the first sheet 1214a includes a limiting protrusion (not shown), and the limiting groove 1323 is matched with the limiting protrusion to prevent the connecting member 13 from moving in a circumferential direction, which is beneficial to the stability of the structure and the stability of the sealing.

Referring to FIG. 4 and FIG. 5, which are schematic structural views of a heat exchange apparatus 2, although some reference numerals in FIG. 4 are not indicated below, the reference numerals of the same parts in the above embodiment are also marked in FIG. 4 to facilitate understanding and avoid repetition and redundancy. Similar processing is formed in subsequent embodiments. The similarities with the embodiment shown in FIGS. 1 to 3 will not be described again, and the differences will be described below.

At least part of the valve core member 11 protrudes into the first conduit 1211, and at least part of the connecting member 13 protrudes into the first conduit 1211.

The core body member 12 includes a third sheet 1214b and a fourth sheet 1215b, the third sheet 1214b is fixed to the fourth sheet 1215b by welding, the third sheet 1214b includes a first annular protruding portion 1219a, the fourth sheet 1215b includes a second annular protruding portion 1219b, a first hole is provided in the first annular protruding portion 1219a, the first hole is provided in the second annular protruding portion 1219b, the first conduit 1211 extends through the first annular protruding portion 1219a and the second annular protruding portion 1219b, the first annular protruding portion 1219a protrudes into the first hole of a sheet adjacent to the third sheet 1214b, the second annular protruding portion 1219b protrudes into the first hole of a sheet adjacent to the fourth sheet 1215b, a gap is provided between the first annular protruding portion 1219a and a wall portion of the first hole provided in the sheet adjacent to the third sheet 1214b, and a gap is provided between the second annular protruding portion 1219b and a wall portion of the first hole provided in the sheet adjacent to the fourth sheet 1215b. As such, the fluid can flow through an outer periphery of the first annular protruding portion 1219a and flow in the inter-sheets passage 1212 for heat exchange.

At least part of the valve seat portion 111 protrudes into the first annular protruding portion 1219a, and the bottom section 1111 is arranged sealed to the annular protruding portion 1219a; the first groove 1116 is provided in the bottom section 1111, the heat exchange apparatus 1 includes a first sealing member 14, which is located in the first groove 1116 and is closely matched with the annular protruding portion 1219a to realize sealing between the first sealing member 14 and the annular protruding portion 1219a, which effectively avoids the leakage between the bottom section 1111 and the annular protruding portion 1219a.

Providing that the side of the core body member 12, which is arranged with the valve core member 11, is taken as an upper side, the middle section 1112 is located above the connecting member 13. The fluid flows in from the bottom opening 1115, and flows out from the peripheral opening 1113 after flowing through the throttle hole 1114, so that the fluid that has just flowed in the core body member 12 flows out from the peripheral opening 1113 after being throttled and depressurized by the expansion valve, and flows in the inter-sheets passage 1212 to exchange heat with the fluid in the second flow passage. The throttling and depressurization of the refrigerant are conducted inside the core body member 12, and the link with the subsequent heat exchange process is smooth, which reduces the influences of factors such as gas-liquid stratification of the refrigerant after throttling and depressurization in a long pipeline to the heat exchange efficiency of the subsequent heat exchange by the pipeline arrangement.

The connecting member 13 includes a first end portion 134 and a second end portion 135, and at least part of the first end portion 134 is fixed to the second annular protruding portion 1219b by welding. Specifically, at least part of the first end portion 134 protrudes into the second annular protruding portion 1219b, and at least part of an outer wall of the first end portion 134 is fixed to an inner wall of the second annular protruding portion 1219b by welding. For example, a welding ring may be provided during welding.

At least part of the second end portion 135 is fixed to the bottom pressing block 123 by welding, and the at least part of the second end portion 135 protrudes into a position of the bottom pressing block 123 provided with the first hole.

The first end portion 134 includes a first section 1341 and a second section 1342, the first section 1341 protrudes into the second annular protruding portion 1219b, the second section 1342 does not protrude into the second annular protruding portion 1219b, an outer diameter of the second section 1342 is greater than an outer diameter of the first section 1341, and the outer diameter of the second section 1342 is greater than an inner diameter of the second annular protruding portion 1219b, for example, the outer diameter of the second section 1342 may be tapered toward the first section 1341. As such, the sheet may shrink when the stacked sheets are fed into a furnace for welding, which results in a reduction in height of the stacked core body member 12. At this time, the first end portion 134 of the connecting member is difficult to protrude into the bottom opening 1115 of the bottom section 1111 during the shrinkage of the sheets by providing the second section 1342, which reduces the influence on the bottom section 1111 by the change in height caused by shrinkage of the connecting member 13 during the welding of the core body member 12, and is beneficial to improving the matching between the valve core member 11 and the core body member 12 and improving the sealing between the valve core member 11 and the core body member 12.

The second end portion 135 of the connecting member 13 includes a welding section 1352 and an adjacent section 1351, the welding section 1352 is welded to the welding matching portion 125, the adjacent section 1351 is adjacent to the welding section 1352, the adjacent section 1351 is relatively closer to the first end portion 134 than the welding section 1352, an outer diameter of the welding section 1352 is smaller than or equal to an inner diameter of the welding matching portion 125, and an outer diameter of the adjacent section 1351 is smaller than or equal to the inner diameter of the welding matching portion 125. In a case that the core body member shrinks during the welding, since the connecting member has the welding section and the adjacent section, a distance between an end, away from the valve core member 11, of the welding matching portion 125 and an end, away from the valve core member 11, of the welding section 1352 is larger than or equal to zero, the welding matching portion 125 is movable relative to the connecting member 13 during the welding shrinkage of the core body member 12, and the welding between the connecting member 13 and the core body member 12 has good sealing performance. In addition, the outer diameter of the adjacent section 1351 may be further greater than or equal to the outer diameter of the welding section 1352, and the diameter of the welding section 1352 can be tapered relative to the adjacent section 1351, which is more beneficial to the movement of the sheet portion relative to the connecting member 13 during the welding.

The welding section 1352 may include a first zone section and a second zone section, the first zone section is welded to the welding matching portion 125, the second zone section is adjacent to the first zone section, the second zone section is farther away from the first end portion than the first zone section, and an outer diameter of the second zone section is smaller than or equal to an inner diameter of the first zone section; the first zone section may not be arranged corresponding to the welding matching portion 125 when the connecting member 13 is assembled into the core body member 12, and the first zone section is moved to the welding matching portion 125 and is fixed to the welding matching portion 125 by welding when the core body member shrinks.

Referring to FIG. 6 and FIG. 7, which are schematic cross-sectional views of another heat exchange apparatus, the similarities with the embodiment shown in FIGS. 1 to 3 will not be described again, and the differences will be described below.

Providing that a side of the core body member 11, which is arranged with the valve core member 12, is taken as an upper side, the middle section 1112 is located above the connecting member 13.

The connecting member 13 includes the first end portion 134 and the second end portion 135, the first end portion 134 is arranged matched with the bottom section 1111, the first end of the connecting member is located in the first conduit, the bottom section 1111 includes the first groove 1116, the heat exchange apparatus includes the first sealing member 14, which is located between the first end portion of the connecting member and the valve core member and located in the first groove 1116. The first sealing member 14 is closely matched with the annular wall portion 131 of the connecting member 13 to realize sealing between the first sealing member 14 and the annular wall portion 131, which effectively avoids the leakage between the bottom section 1111 and the connecting member 13.

The bottom section 1111 includes a second groove 1117, which is closer to the peripheral opening 1113 than the first groove 1116. The first end portion 134 is arranged matched with the bottom section 1111, the first end portion 134 includes a limiting groove 136, and a position of the limiting groove 136 is arranged opposite to the second groove 1117. The heat exchange apparatus includes a limiting member 16, such as a retaining ring, a part of the retaining ring is located in the second groove 1117, another part of the retaining ring is located in the limiting groove 136, and the valve core member 11 and the connecting member 13 are fixed and limited by the retaining ring.

The second end portion 135 is arranged fixed to the bottom pressing block 123, the second end portion 135 includes a groove portion 1353, the heat exchange apparatus includes a second sealing member 15, the groove portion 1353 is configured to accommodate the second sealing member 15, and the second end portion 135 is arranged sealed to the bottom pressing block 123.

A manufacturing method for the heat exchange apparatus shown in FIG. 6 and FIG. 7 are provided according to the embodiment of the present disclosure, which includes:

provide the sheet portion 121, and put the stacked sheet portion 121 into a furnace for welding, in which the welded sheet portion 121 includes the first conduit 1211, the second conduit 1213 and the inter-sheets passage 1212;

provide the valve core member 11 and the connecting member 13, protrude the valve seat portion 111 of the valve core member 11 into the first conduit 1211 of the welded sheet portion 121, in which the valve seat portion 111 includes the bottom section 1111 and the middle section 1112, the middle section 1112 is provided with a peripheral opening 1113; protrude part of the bottom section 1111 into the connecting member 13, seal the bottom section 1111 with the connecting member 13 by providing the first sealing member 14; and assemble and fix the valve core member 11 and the core body member 12.

Furthermore, the manufacturing method further includes: provide the bottom pressing block 123, put the stacked sheet portion 121 and the bottom pressing block 123 into the furnace for welding; align the communication hole 1231 of the bottom pressing block 123 with the first conduit 1211;

assemble and fix the valve seat portion 111 and the connecting member 13; in which the assembling and fixing the valve seat portion 111 and the connecting member 13 can specifically include: put the first sealing member 14 into the first groove 1116 of the bottom section 1111, insert the valve core member 11 with the first sealing member 14 into the connecting member 13, align the second groove 1117 of the bottom section 1111 with the limiting groove 136 of the connecting member 13, and put the limiting member 16, such as a retaining ring, into the second groove 1117 and the limiting groove 136 to limit and fix the valve seat portion 111 and the connecting member 13;

and protrude the assembled connecting member 13 and the assembled valve core member 11 from a side of the sheet portion 121 not welded to the bottom pressing block 123 into the first conduit 1211, protrude part of the connecting member 13 into the first conduit 1211, protrude another part of the connecting member 1211 into the bottom pressing blocking 123, and seal the connecting member 13 with the bottom pressing block 123 by providing the second sealing member 15; finally, assemble and fix the valve core member 11 and the core body member 12 to complete the manufacture of the heat exchange apparatus.

Through the manufacturing method, the connecting member 13 can be fixed to the core body member 12 by assembly, and the assembly process of the connecting member 13 and the valve core member 11 is configured to be after the welding of the core body member 12, which reduces the influence of various uncertain factors during the welding of the core body member 12 on the sealing between the connecting member 13 and the core body member 12, the process is simple and the manufacturing method is simple.

Referring to FIG. 8, it shows a matching mode of the valve core member 11, the connecting member 13 and the bottom pressing block 123, in which a structure of the sheet portion of the core body member 12 is omitted. In order to show the structure more clearly, some reference numerals of the following structures may not be shown in FIG. 8, which can make reference to FIG. 2.

In this embodiment, the middle section 1112 is located in the first conduit 1211, so that a depth of the valve core member 11 assembled into the core body member 12 is relatively great, which is beneficial to reducing a height of the valve core member 11 protruding from the core body member 12, and the overall structure is more compact.

The connecting member 13 includes the first end portion 134 and the second end portion 135, at least part of the bottom section 1111 protrudes into the first end portion 134, the bottom section 1111 includes an external threaded portion 1119, the connecting member 13 includes an internal threaded portion 1326, the bottom section 1111 is threaded with the connecting member 13; the bottom section 1111 includes a protruding portion 1118, and the protruding portion 1118 protrudes relative to the internal threaded portion 1326 along a radial direction of the valve core member 11. The heat exchange apparatus includes the first sealing member 14, which is located between the protruding portion 1118 and the first end portion 134. Herein, a part of the first end portion 134 for receiving a portion that the bottom section 1111 protrudes is configured as an annular wall portion, and the bottom section 1111 performs axial sealing by the protruding portion 1118 and the annular wall portion.

Furthermore, the connecting member 13 includes a valve seat matching portion 132 and a drainage pipe 133, the valve seat matching portion 132 includes a first section 1324 and a second section 1325, the first section 1324 is arranged matched with the valve core member 11, the first section 1324 of the valve seat matching portion 132 is provided with the internal threaded portion 1326, the bottom section 1111 is provided with the external threaded portion 1119, and the valve core member 11 is threaded with the valve seat matching portion 132. The bottom section 1111 includes the protruding portion 1118, and the protruding portion 1118 protrudes relative to the internal threaded portion 1326 along the radial direction of the valve core member 11. The first sealing member 14 is located between the protruding portion 1118 and the valve seat matching portion 132.

The second section 1325 of the valve seat matching portion 132 is arranged matched with the drainage pipe 133. The drainage pipe 133 protrudes into the second section 1325, an outer wall of the drainage pipe 133 is fixed to an inner wall of the second section 1325 of the valve seat matching portion 132, and the drainage pipe 133 can be welded to the valve seat matching portion 132 by a soldering flake.

The valve seat matching portion 132 includes a limiting protrusion 1327, and an end of the drainage pipe 133 is arranged opposite to the limiting protrusion 1327. The limiting protrusion 1327 is configured to limit a depth of the drainage pipe 133 protruding into the valve seat matching portion 132, and ensure that the protruding depth of the drainage pipe 133 does not exceed the limiting protrusion 1327 when the core body member 12 shrinks during welding, which is beneficial to the sealing fit and the connection of flow passages between the bottom section 1111 and the valve seat matching portion 132.

As other methods, positions of the drainage pipe 133 and the second section 1325 of the valve seat matching portion 132 can be fixed by screw connection.

The manufacturing method shown in FIG. 8 is provided according to the embodiment of the present disclosure, which includes:

provide the sheet portion 121, and put the stacked sheet portion 121 into a furnace for welding, in which the welded sheet portion 121 includes the first conduit 1211, the second conduit 1213 and the inter-sheets passage 1212;

provide the valve core member 11 and the connecting member 13, protrude the valve seat portion 111 of the valve core member 11 into the first conduit 1211 of the welded sheet portion 121, in which the valve seat portion 111 includes the bottom section 1111 and the middle section 1112 and the middle section 1112 includes the peripheral opening; protrude part of the bottom section 1111 into the connecting member 13, seal the bottom section 1111 with the connecting member 13 by providing the first sealing member 14; and assemble and fix the valve core member 11 and the core body member 12.

Furthermore, the manufacturing method further includes: provide the bottom pressing block 123, put the stacked sheet portion 121 and the bottom pressing block 123 into the furnace for welding; align the communication hole 1231 of the bottom pressing block 123 with the first conduit 1211;

assemble and fixed the valve seat portion 111 and the connecting member 13; in which the assembling and fixing the valve seat portion 111 and the connecting member 13 can specifically include: put the first sealing member 14 between the valve seat portion 111 and the connecting member 13, insert the part of the valve core member 11 into the connecting member 13, in which the bottom section 1111 is provided with the external threaded portion 1119, and an inner wall of the connecting member 13 is provided with the internal threaded portion 1326; threadedly connect the bottom section 1111 with the connecting member 13, and obtain the sealing between the bottom section 1111 and the connecting member 13 by the first sealing member 14 at the end of the connecting member 13; and

protrude the assembled connecting member 13 and the assembled valve core member 11 from a side of the sheet portion 121 that is not welded to the bottom pressing block 123 into the first conduit 1211, protrude a part of the connecting member 13 into the first conduit 1211, protrude another part of the connecting member 1211 into the bottom pressing blocking 123, and sealingly connect the connecting member 13 with the bottom pressing block 123 by providing the second sealing member 15. Finally, assemble and fix the valve core member 11 and the core body member 12, to complete the manufacture of the heat exchange apparatus.

Through the manufacturing method, the connecting member 13 can be fixed to the core body member 12 by assembly, and the assembly process of the connecting member 13 and the valve core member 11 is configured to be after the welding of the core body member 12, which reduces the influence of various uncertain factors during the welding of the core body member 12 on the sealing between the connecting member 13 and the core body member 12, the process is simple and the manufacturing method is simple.

Referring to FIG. 9, it shows a matching mode of the valve core member 11, the connecting member 13 and the bottom pressing block 123, in which the structure of the sheet portion of the core body member 12 is omitted. In order to show the structure more clearly, some reference numerals of the following structures may not be shown in FIG. 9, which can make reference to FIG. 2.

The connecting member 13 includes an annular wall portion 131, the bottom section 1111 protrudes into the connecting member 13, and the bottom section 1111 is arranged sealed to the annular wall portion 131. The heat exchange apparatus includes the bottom pressing block 123, which is fixed to the sheet portion 121 by welding. The bottom pressing block 123 includes a communication hole 1231 and a protrusion 1232, at least part of the protrusion 1232 protrudes into the first conduit 1211, the second end portion 135 of the connecting member 13 is located in the communication hole 1231 of the bottom pressing block 123, at least part of the second end portion 135 is fixed to the bottom pressing block 123 by welding. The second end portion 135 includes a flared portion 1354, which is arranged to limit the bottom pressing block 123, for example, by riveting.

Referring to FIG. 10, it is a schematic cross-sectional view of the heat exchange apparatus. In order to show the structure more clearly, some reference numerals of the following structures may not be shown in FIG. 10, which can make reference to FIG. 2 and FIG. 3.

The connecting member 13 includes the annular wall portion 131, and the valve seat portion 111 is arranged sealed to the annular wall portion 131. The height of the annular wall portion 131 is greater than the height of the bottom section 1111 along the stacking direction of the sheets of the core body member 12. The first groove 1116 is provided in the bottom section 1111, the heat exchange apparatus includes the first sealing member 14, the first sealing member 14 is located in the first groove 1116, and the first sealing member 14 is closely matched with the annular wall portion 131 to realize sealing between the first sealing member 14 and the annular wall portion 131, which effectively avoids the leakage between the bottom section 1111 and the annular wall portion 131.

The connecting member 13 includes the side hole 1321, and the side hole 1321 is closer to the first side portion 124 of the core body member 12 than the annular wall portion 131 along the stacking direction of sheets of the core body member 12. The side hole 1321 corresponds to the peripheral opening 1113 of the valve core member 11. As such, the fluid flows in from the bottom opening 1115 of the valve core member 11 through the drainage pipe 133, flows in the first conduit 1211 through the throttle hole 1114, the peripheral opening 1113 and the side hole 1321, and then flows in the inter-sheets passage 1212 in communication with the first conduit 1211 to exchange heat with the fluid in the second flow passage.

The connecting member 13 includes the flange portion 1322, and the flange portion 1322 is fixed to the core body member 12 by welding. The sheets of the core body member 12 include the first sheet 1214a and the second sheet 1215a, the first sheet 1214a is fixed to the second sheet 1215a by welding, the top or the bottom of the flange portion 1322 is fixed to the first sheet 1214a by welding; or the top or the bottom of the flange portion 1322 is fixed to the second sheet 1215a by welding.

The core body member 12 includes the top pressing block 122, and the flange portion 1322 is fixed to the top pressing block 122 by welding. The valve seat matching portion 132 and the sheet portion 121 are fixed and limited by the flange portion 1322. The flange portion 1322 is fixed to the top pressing block 122 of the core body member 12 by welding during the welding shrinkage of the sheet portion 121, which can ensure the certainty of the position of the connecting member 13 in the core body member 12, and reduce the risk of affecting the position of the connecting member 13 after the sheets shrink and reduce the risk of fluid leakage between the connecting member 13 and the valve seat portion 111.

The core body member 12 includes the bottom pressing block 123, part of the connecting member 13 protrudes into the bottom pressing block 123, the bottom pressing block 123 includes the welding matching portion 125, the second end portion 135 protrudes into the welding matching portion 125, and the second end portion 135 is fixed to the bottom pressing block 123 by welding.

The bottom pressing block 123 includes the communication hole 1231 which is in communication with the first conduit 1211, the welding matching portion 125 is arranged on an inner wall of the bottom pressing block 123 provided with the bottom pressing block 123, the second end portion 135 protrudes into the communication hole 1231, and a thickness of the bottom pressing block 123 is greater than a thickness of five sheets. As such, the bottom pressing block 123 can be welded to an outer wall of the connecting member 13 to ensure sealing during the welding of the core body member 12.

The second end portion 135 of the connecting member 13 includes the welding section 1352 and the adjacent section 1351, the welding section 1352 of the connecting member 13 is welded to the welding matching portion 125, the adjacent section 1351 is adjacent to the welding section 1352, the adjacent section 1351 is closer to the first end portion 134 than the welding section 1352, the outer diameter of the welding section 1352 is less than or equal to the inner diameter of the welding matching portion 125, and the outer diameter of the adjacent section 1351 is less than or equal to the inner diameter of the welding matching portion 125. In a case that the core body member shrinks during the welding, since the connecting member has the welding section and the adjacent section, a distance between an end, away from the valve core member, of the welding matching portion and an end, away from the valve core member, of the welding section is larger than or equal to zero, the welding matching portion is movable relative to the connecting member during the welding shrinkage of the core body member, and thus the welding between the connecting member and the core body member has good sealing performance. In addition, the outer diameter of the adjacent section 1351 may be further greater than or equal to the outer diameter of the welding section 1352, and the diameter of the welding section 1352 can be tapered relative to the adjacent section 1351, which is more beneficial to the movement of the sheet portion relative to the connecting member 13 during the welding.

Referring to FIG. 11, it is a schematic cross-sectional view of another embodiment of the heat exchange apparatus. A general structure of the heat exchange apparatus can make reference to the heat exchange apparatus shown in FIG. 10.

The heat exchange apparatus includes a first blocking portion 1217, the first conduit 1211 is separated by the blocking portion 1217, the first conduit 1211 includes a first sub conduit 1211a located on one side of the first blocking portion 1217 and a second sub conduit 1211b located on another side of the first blocking portion 1217, the peripheral opening 1113 is in communication with the first sub conduit 1211a, and the first sub conduit 1211a is not in direct communication with the second sub conduit 1211b.

The valve body member 12 includes a fifth sheet 1214c, the fifth sheet 1214c includes the first blocking portion 1217, and the first blocking portion 1217 is fixed to the outer wall of the connecting member 13 by welding. Providing that the side of the core body member 12 assembled with the valve core member 11 is taken as an upper side, the first blocking portion 1217 is located below the middle section 1112.

The bottom section 1111 is located in the connecting member 13, and the bottom section 1111 is arranged sealed to the connecting member 13. Providing that the side of the core body member arranged with the valve core member is taken as the upper side along the extending direction of the first conduit, the first blocking portion 1217 is located below the peripheral opening 1113. As such, the arrangement of the first blocking portion 1217 has less interference with the fluid flowing out from the peripheral opening 1113.

The first conduit 1211 includes the first sub conduit 1211a and the second sub conduit 1211b, and the first blocking portion 1217 is fixed to the outer wall of the connecting member 13 by welding so as to separate the first sub conduit 1211a from the second sub conduit 1211b.

The valve body member 12 includes a sixth sheet 1215c, the sixth sheet 1215c includes a second blocking portion 1218, the second blocking portion 1218 is located at the second conduit 1213, the second conduit 1213 includes a third sub conduit 1213a and a fourth sub conduit 1213b, and the second blocking portion 1218 separates the third sub conduit 1213a from the fourth sub conduit 1213b.

The inter-sheets passage 1212 includes a first route 1212a, a second route 1212b and a third route 1212c, a flow direction of the first route 1212a is opposite to a flow direction of the second route 1212b, and the flow direction of the second route 1212b is opposite to a flow direction of the third route 1212c. As such, the fluid flows in from the bottom opening 1115 after flowing into the connecting member 13 through the first communication passage 103, and then flows in the first sub conduit 1211a, the first route 1212a, the third conduit 1213a, the second route 1212b, the second conduit 1211b, the third route 1212c and the second communication passage 104 through the throttle hole 1114 and the peripheral opening 1113. The throttling and depressurization to the fluid can be conducted after flowing into the heat exchange apparatus, and the fluid flowing in the inter-sheets passage 1212 from the peripheral opening 1113 can directly exchange heat with the fluid in the adjacent inter-sheets passage 1212, and the throttling and heat exchange can be completed inside the core body member 12, which is not only beneficial to the stability of phase state of the fluid, but also beneficial to improving the heat exchange efficiency.

Referring to FIG. 15 for another heat exchange apparatus. Merely the differences from the FIG. 11 are described here. The bottom pressing block 123 includes a second communication passage 104, the second communication passage 104 is not in direct communication with the first communication passage 103, and the second communication passage 104 is in communication with the second sub conduit 1211b.

The inter-sheets passage includes a first route and a second route, and a flow direction of the first route is opposite to a flow direction of the second route.

When the valve core member is in an open state, the communication passage 103, the communication cavity 138, the bottom opening 1115, the throttle hole 1114, the peripheral opening 1113, the first sub conduit 1211a, the first route 1212a, the second conduit 1213, the second route 1212b, the second conduit 1211b and the second communication passage 104 are in communication. In FIG. 15, the first communication passage 103 and the second communication passage 104 are both formed at positions of the bottom pressing block 123 corresponding to the first conduit 1211, the first communication passage 103 shown in FIG. 11 is formed in the bottom pressing block 123 corresponding to the first conduit 1211, and the second communication passage 104 is formed in the bottom pressing block 123 corresponding to the second conduit 1213.

Referring to FIG. 16, which is a schematic cross-sectional view of a heat exchange apparatus 1.

A general structure of the heat exchange apparatus is similar to the structure shown in FIG. 2. The same reference numerals below represent the same or similar structures.

The heat exchange apparatus includes the first blocking portion 1217, the first conduit 1211 is separated by the blocking portion 1217, the first blocking portion 1217 shown in FIG. 16 is a hemming structure arranged at a rear end of the first end portion of the connecting member 13, and the first blocking portion 1217 is located below the peripheral opening 1113. The first conduit 1211 includes the first sub conduit 1211a located on one side of the first blocking portion 1217 and the second sub conduit 1211b located on another side of the first blocking portion 1217, the peripheral opening 1113 is in communication with the first sub conduit 1211a, and the first sub conduit 1211a is not in direct communication with the second sub conduit 1211b.

The valve body member 12 includes the fifth sheet 1214c, a first blocking portion 1217 is formed by an extension of the connecting member 13, and the first blocking portion 1217 extends along the radial direction of the connecting member 13. The first blocking portion 1217 is fixed to the fifth sheet 1214c by welding.

The bottom section 1111 is located in the connecting member 13, and the bottom section 1111 is arranged sealed to the connecting member 13. Providing that the side of the core body member arranged with the valve core member is taken as the upper side along the extending direction of the first conduit, the first blocking portion 1217 is located below the peripheral opening 1113. The connecting member 13 is arranged in the first conduit, and the connecting member 13 is located on the lower side of the peripheral opening 1113, so that the interference of the fluid flowing out from the peripheral opening 1113 is small.

In addition, similar to FIG. 15, a first communication passage 103 and a second communication passage 104 are both formed at positions of the bottom pressing block 123 in FIG. 16 corresponding to the first conduit 1211.

It should be noted that, although the connecting member shown in the figures has an integrated structure, the present disclosure also includes a solution in which the connecting member has a separate structure. For example, the connecting member may include two portions fixed by a screw or by other position-limiting fit, or may include two portions or three portions arranged by welding.

It should be understood that, the first blocking portion may be integrally formed with the sheets or the connecting member, or may be welded to the sheets or the connecting member.

In this embodiment, the second end portion 135 of the connecting member 13 includes the welding section 1352 and the adjacent section 1351, which can specifically refer to the embodiment shown in FIG. 4, and will not be detailed described herein.

Along the extending direction of the first conduit, a thickness of the welding matching portion is greater than a thickness of two stacked plates, or the thickness of the welding matching portion may be greater than the thickness of five stacked plates.

Referring to FIG. 12, it is a schematic cross-sectional view of the heat exchange apparatus.

The connecting member 13 includes an annular wall portion 131, and the valve seat portion 111 is arranged sealed to the annular wall portion 131. The height of the annular wall portion 131 is greater than the height of the bottom section 1111 along the stacking direction of the sheets of the core body member 12. The first groove 1116 is provided in the bottom section 1111, the heat exchange apparatus includes a first sealing member 14, the first sealing member 14 is located in the first groove 1116, and the first sealing member 14 is closely matched with the annular wall portion 131 to realize sealing between the first sealing member 14 and the annular wall portion 131, which effectively avoids the leakage between the bottom section 1111 and the annular wall portion 131.

In this embodiment, the connecting member 13 includes a flange portion 137, and the flange portion 137 is arranged sealed to the core body member 12; the sheet portion 121 includes a protruding portion 1220, the protruding portion 1220 protrudes away from the valve core member 11, and the protruding portion 1220 is arranged opposite to the bottom pressing block 123. The flange portion 137 is located between the sheet portion 121 and the bottom pressing block 123. The flange portion 137 is located between the sheet portion 121 and the bottom pressing block 123, which is not limited to that the flange portion 137 must be in contact with the sheet portion 121 and bottom pressing block 123. Herein, it merely means that the flange portion 137 is just located between a partial structure of the sheet portion 121 and a partial structure of the bottom pressing block 123. The protruding portion 1220 can position the bottom pressing block, which facilitates assembly.

The flange portion 137 is limited between the sheet portion 121 and the bottom pressing block 123, which can be configured to determine the position of the connecting member 13 in the core body member 12 and to stabilize the sealing fit between the connecting member 13 and the bottom section 1111, so as to facilitate the assembly of the connecting member 13 and the valve core member 11.

The heat exchange apparatus includes the second sealing member 15, such as in the form of a sealing gasket. The second sealing member 15 is located between the flange portion 137 and the sheet portion 121 and is configured to seal the first conduit 1211. The bottom pressing block 123 includes a threaded hole 1233, the bottom pressing block 123 and the sheet portion 121 can be fixed by a screw inserted into the threaded hole, and the sealing between the flange portion 137 and the sheet portion 121 can be fixed and pressed by the screw. In addition, the heat exchange apparatus may be provided with a third sealing member between the flange portion 137 and the bottom pressing block 123, so that the sealing between the connecting member 13 and the core body member 12 is realized by axial sealing, which is beneficial to stabilizing the sealing of the heat exchange apparatus and has a simple processing.

Since the connecting member 13 is provided with sealing points at two portions, the sealing between the connecting member 13 and the valve seat portion 111 is realized by arranging the sealing member in the groove of the bottom section 1111, so that the radial sealing between the bottom section 1111 and the inner wall of the connecting member 13 is realized. In that case, the inner wall of the connecting member 13 has certain roughness requirement, and additional processing is required on the inner wall of the connecting member 13 to ensure the matching required for sealing.

At the other sealing point of the connecting member 13, the axial sealing between the flange portion 137 and the sheet portion 121 is realized by pressing the bottom pressing block 123 against the flange portion 137. Since a sealing member is provided between the flange portion 137 and the sheet portion 121, the flange portion 137 and the sheet portion 121 are sealed axially. In that case, the roughness requirement of a matching portion between the flange portion 137 and the sheet portion 121 is lower than the roughness requirement required for the radial sealing. Therefore, for the processing of the connecting member 13, the key point is mainly on the matching between the inner wall of the connecting member 13 and the bottom section 1111, and thus the processing considerations are less, and the processing is simple and easy to realize.

Referring to FIG. 13, which simply shows a matching mode of the connecting member 13 and the core body member 12. In order to show the structure more clearly, some reference numerals of the following structures may not be shown in FIG. 13, which can make reference to FIG. 12. The matching mode between the connecting member 13 and the bottom section 1111 can refer to FIG. 12. The connecting member 13 includes the flange portion 137, and the flange portion 137 is arranged sealed to the core body member 12; the flange portion 137 includes an upper portion 137a and a lower portion 137b. Providing that a direction of a side of the core body member 12 assembled with the valve core member 11 is taken as above, a direction of another side of the core body member 12 is taken as a lower side. The upper portion 137a of the flange portion 1322 is fixed to one sheet of the sheet portion 121 by welding, and the lower portion 137b of the flange portion 1322 is fixed to another sheet of the sheet portion 121.

In other embodiments, the core body member 12 includes the bottom pressing block 123, the lower portion 137b of the flange portion 137 may be fixed to the bottom pressing block 123 by welding, which is shown in FIG. 12 and FIG. 13. As such, the fluid flows into the first conduit 1211 through the communication cavity 138 of the connecting member 13, the bottom opening 1115, the throttle opening 1114 and the peripheral opening 1113 after it flows in from the communication passage 103 so as to exchange heat with the fluid in the adjacent inter-sheets passage 1212.

A manufacturing method for the heat exchange apparatus shown in FIG. 12 is provided according to the embodiment of the present disclosure, which includes:

• • provide a sheet portion 121, and put the stacked sheet portion 121 into a furnace for welding, in which the welded sheet portion 121 includes a first conduit 1211, a second conduit 1213 and an inter-sheets passage 1212;
  • provide a valve core member 11 and a connecting member 13, protrude a valve seat portion 111 of the valve core member 11 into the first conduit 1211 of the welded sheet portion 121, in which the valve seat portion 111 includes the bottom section 1111 and the middle section 1112 and the middle section 1112 includes the peripheral opening; protrude part of the bottom section 1111 into the connecting member 13, sealingly connect the bottom section 1111 with the connecting member 13 by providing the first sealing member 14; and
  • assemble and fix the valve core member 11 and the core body member 12.

Furthermore, the manufacturing method further includes: provide a bottom pressing block 123, protrude part of the connecting member 13 into the first conduit 1211, arrange the flange portion 137 of the connecting member 13 between the bottom pressing block 123 and the sheet portion 121, and sealingly connect the connecting member 13 with the sheet portion 121 by the sealing member;

• • assemble and fix the bottom pressing block 123, the connecting member 13 and the sheet portion 121; and
  • protrude the valve seat portion 111 of the valve core member 11 from a side opposite to the side of the core body member 11 assembled with and fixed to the connecting member 13 into the first conduit 1211 of the welded sheet portion 121, in which the valve seat portion 111 includes the bottom section 1111 and the middle section 1112, and the middle section 1112 includes the peripheral opening; protrude the bottom section 1111 into the connecting member 13, and sealingly connect the bottom section 1111 with the connecting member 13 by providing the first sealing member 14.

Through the manufacturing method, it does not need to weld the connecting member 13 to the core body member 12, and the assembly process of the connecting member 13 and the valve core member 12 is arranged after the welding of the core body member 12, which reduces the influence of various uncertain factors during the welding of the core body member 12 on the sealing between the connecting member 13 and the core body member 12, the process is simple and the manufacturing method is simple.

Referring to FIG. 14, it is a schematic partial cross-sectional view of another heat exchange apparatus. In order to show the structure more clearly, some reference numerals of the following structures may not be shown in FIG. 14, which can make reference to FIG. 12. The matching mode between the connecting member 13 and the bottom section 1111 can refer to FIG. 12.

The core body member 12 includes the bottom pressing block 123, and the bottom pressing block 123 is fixed to the sheet portion 121 by welding. The connecting member 13 includes the first end portion 134 and the second end portion 135, the first end portion 134 of the connecting member 13 is arranged sealed to the bottom section 1111 (referring to FIG. 12), the second end portion 135 of the connecting member 13 protrudes into the bottom pressing block 123, the second end portion 135 of the connecting member 13 includes the second groove 1117, the heat exchange apparatus includes the second sealing member 15, and the second sealing member 15 is arranged in the second groove 1117 so as to seal the outer wall of the connecting member 13 to the inner wall of the bottom pressing block 123.

It should be noted that the above embodiments are only used to illustrate the present application rather than limit the technical solutions described in the present application, for example, the definition of directionality such as “front”, “rear”, “left”, “right”, “up” and “down”. Although the present application has been described in detail herein with reference to the above embodiments, those of ordinary skill in the art should understand that the present application may still be combined, modified or equivalently replaced by those skilled in the art, and all technical solutions and its improvements that do not depart from the spirit and scope of the present application should be covered by the scope of the claims of the present application.

Claims

1. A heat exchange apparatus, comprising a valve core member and a core body member, wherein the valve core member is arranged fixed to the core body member;

the core body member comprises a sheet portion, the sheet portion comprises at least a first conduit, a second conduit and an inter-sheets passage, the first conduit, the inter-sheets passage and the second conduit are in communication;

the valve core member comprises a valve seat portion, the valve seat portion comprises a bottom section and a middle section, the bottom section comprises a bottom opening, the middle section comprises a peripheral opening, the valve seat portion comprises a throttle hole, the peripheral opening is in communication with the bottom opening through the throttle hole, the middle section and the bottom section are located in the first conduit, and the peripheral opening is in communication with the first conduit;

the heat exchange apparatus comprises a connecting member, the connecting member comprises a communication cavity, the connecting member comprises a first end portion, the first end portion of the connecting member is located in the first conduit, the bottom opening of the bottom section is in communication with the communication cavity; and

the core body member comprises a first side portion and a second side portion, at least part of the valve core member is located on a side where the first side portion is located, the heat exchange apparatus comprises a communication passage, the communication passage is located on a side where the second side portion is located, and the communication passage is in communication with the communication cavity.

2. The heat exchange apparatus according to claim 1, wherein the middle section is closer to the first side portion than the bottom section along a stacking direction of the core body member, the bottom section is located in the connecting member, the connecting member comprises an annular wall portion, and the bottom section is arranged sealed to the annular wall portion; and

when the valve core member is in an open state, the communication passage, the communication cavity, the bottom opening, the throttle hole, the peripheral opening, the first conduit, the inter-sheets passage and the second conduit are in communication.

3. The heat exchange apparatus according to claim 2, wherein the connecting member comprise a valve seat matching portion, the valve seat matching portion comprises a flange portion, the flange portion is fixed to the core body member by welding; the middle section protrudes into the valve seat matching portion, a side hole corresponding to the peripheral opening is provided in the valve seat matching portion; the side hole is closer to the first side portion of the core body member than the annular wall portion along the stacking direction of sheets of the core body member; and

a height of the annular wall portion is greater than a height of the bottom section.

4. The heat exchange apparatus according to claim 3, wherein the connecting member comprises a drainage pipe, the valve seat matching portion comprises the annular wall portion, the bottom section comprises a first groove, a first sealing member of the heat exchange apparatus is located in the first groove, and the first sealing member is arranged abutting against the annular wall portion;

the valve seat matching portion comprises a bottom end portion, the drainage pipe is fixed to the bottom end portion by welding, and at least part of the drainage pipe protrudes into the valve seat matching portion;

the drainage pipe comprises an external expansion portion, the valve seat matching portion is closer to the bottom section than the external expansion portion along the stacking direction of the core body member and the external expansion portion is matched with the bottom end portion of the valve seat matching portion to be limited.

5. The heat exchange apparatus according to claim 3, wherein the sheet portion comprises a first sheet and a second plate, the first sheet is fixed to the second sheet by welding, and a top or a bottom of the flange portion is fixed to the first sheet by welding; or the top or the bottom of the flange portion is fixed to the second sheet by welding;

and/or the core body member comprises a top pressing block, and the flange portion is fixed to the top pressing block by welding.

6. The heat exchange apparatus according to claim 2, wherein the middle section is located below the connecting member providing that a side of the core body member is arranged with the valve core member is taken as an upper side;

the connecting member comprises a drainage pipe, the bottom section comprises a first groove and a second groove, a first sealing member of the heat exchange apparatus is located in the first groove, the first sealing member is arranged abutting against the annular wall portion, the first groove is closer to the peripheral opening than the annular wall portion along an extending direction of the first conduit; the first sealing member of the heat exchange apparatus is accommodated in the first groove; the second groove is closer to the peripheral opening than the first groove; the connecting member comprises a limiting groove, the limiting groove is arranged opposite to the second groove in position; the heat exchange apparatus comprises a limiting member, and at least part of the limiting member is clamped into the second groove and the limiting groove;

or, the bottom section comprises a threaded portion, the connecting member comprises a valve seat matching portion and the drainage pipe, the valve seat matching portion comprises an internal threaded portion, the valve seat matching portion is threaded with the bottom section, at least part of the drainage pipe protrudes into the valve seat matching portion, and the drainage pipe is fixed to the valve seat matching portion by welding;

or, the connecting member comprises a second end portion, the bottom section protrudes into the first end portion, the bottom section comprises the first groove, the first sealing member of the connecting member is located in the first groove, and the first sealing member is arranged abutting against an inner periphery of the first end portion; the heat exchange apparatus comprises a bottom pressing block, the bottom pressing block is fixed to the sheet portion by welding, the bottom pressing block comprises a communication hole, the communication hole is in communication with the first conduit, the bottom pressing block comprises a protrusion, at least part of the protrusion protrudes into the first conduit, the second end portion of the connecting member is located in the bottom pressing block, and the second end portion is fixed to the bottom pressing block by welding.

7. The heat exchange apparatus according to claim 1, wherein the connecting member comprises a drainage pipe, and the middle section is located above the connecting member providing that a side of the core body member arranged with the valve core member is taken as an upper side;

the core body member comprises a third sheet and a fourth sheet, the third sheet is fixed to the fourth sheet by welding, the third sheet comprises a first annular protruding portion, the fourth sheet comprises a second annular protruding portion, the bottom section protrudes into the first annular protruding portion, the bottom section comprises a first groove, a first sealing member of the heat exchange apparatus is located in the first groove, and the first sealing member is arranged abutting against the first annular protruding portion;

the first end portion of the connecting member protrudes into the second annular protruding portion, and the second annular protruding portion is fixed to at least part of the first end portion by welding.

8. The heat exchange apparatus according to claim 7, wherein a first hole is provided in the first annular protruding portion, the first hole is provided in the second annular protruding portion, the first conduit extends through the first annular protruding portion and the second annular protruding portion, the first annular protruding portion protrudes into the first hole of a sheet adjacent to the third plate, the second annular protruding portion protrudes into the first hole of a sheet adjacent to the fourth plate, a gap is provided between the first annular protruding portion and a wall portion of the first hole provided in the sheet adjacent to the third plate, and a gap is provided between the second annular protruding portion and a wall portion of the first hole provided in the sheet adjacent to the fourth plate.

9. The heat exchange apparatus according to claim 7, wherein the connecting member comprises a second end portion, and the second end portion is fixed to the core body member by welding;

the first end portion comprises a first section and a second section, the first section of the first end portion protrudes into the second annular protruding portion, the second section does not protrude into the second annular protruding portion, an outer diameter of the second section is greater than an outer diameter of the first section, and the outer diameter of the second section is tapered toward the first section.

10. The heat exchange apparatus according to claim 1, wherein the heat exchange apparatus comprises a first blocking portion, the first conduit is separated by the blocking portion, the first conduit comprises a first sub conduit located on one side of the first blocking portion and a second sub conduit located on another side of the first blocking portion, the peripheral opening is in communication with the first sub conduit, and the first sub conduit is not in direct communication with the second sub conduit.

11. The heat exchange apparatus according to claim 10, wherein the sheet portion comprises a fifth plate, the fifth sheet comprises the first blocking portion, the first blocking portion is fixed to an outer wall of the connecting member by welding; or, the first blocking portion is formed by extending the fifth sheet, the first blocking portion extends along a radial direction of the connecting member, and the first blocking portion is fixed to the fifth sheet by welding;

the bottom section is located in the connecting member, the bottom section is arranged sealed to the connecting member, and the first blocking portion is located below the peripheral opening providing that a side of the core body member arranged with the valve core member is taken as an upper side along an extending direction of the first conduit.

12. The heat exchange apparatus according to claim 10, wherein the core body member comprises a sixth plate, the core body member comprises a second blocking portion, the second blocking portion is part of the sixth sheet or the second blocking portion is fixed to the sixth sheet by welding, the second blocking portion is located in the second conduit, the second conduit comprises a third sub conduit and a fourth sub conduit, the third sub conduit is located on one side of the second blocking portion, and the fourth sub conduit is located on another side of the second blocking portion;

the second blocking portion is located below the first blocking portion along an extending direction of the first conduit providing that a side of the core body member arranged with the valve core member is taken as an upper side.

13. A manufacturing method for a heat exchange apparatus, comprising:

provide a sheet portion, and put the stacked sheet portion into a furnace for welding, wherein the welded sheet portion comprises a first conduit, a second conduit and an inter-sheets passage;

provide a valve core member and a connecting member, protrude part of a valve seat portion of the valve core member into the first conduit of the welded sheet portion, wherein the valve seat portion comprises a bottom section and a middle section and the middle section comprises a peripheral opening; protrude part of the bottom section into the connecting member, sealingly connect the bottom section with the connecting member by providing a first sealing member, and assemble and fix the valve core member and the connecting member; and

assemble and fix the valve core member and the core body member.

14. The manufacturing method for the heat exchange apparatus according to claim 13, comprising:

provide a bottom pressing block, protrude part of the connecting member into the first conduit, arrange a flange portion of the connecting member between the bottom pressing block and the sheet portion, and sealingly connect the connecting member and the sheet portion by providing a second sealing member;

assemble and fix the bottom pressing block, the connecting member and the sheet portion; and

protrude the valve seat portion from a side opposite to the side of the core body member assembled and fixed with the connecting member, into the first conduit of the welded sheet portion, wherein the valve seat portion comprises the bottom section and the middle section and the middle section comprises the peripheral opening, protrude the bottom section into the connecting member, and sealingly connect the bottom section with the connecting member by providing a sealing member.

15. The manufacturing method for the heat exchange apparatus according to claim 13, comprising:

provide a bottom pressing block, and putting the welded sheet portion and the bottom pressing blocking into the furnace for welding;

assemble and fix the valve seat portion and the connecting member; and

protrude the assembled connecting member and the assembled valve core member from a side of the sheet portion which is not welded to the bottom pressing block, into the first conduit, protrude part of the connecting member into the first conduit, protrude another part of the connecting member into the bottom pressing blocking, and sealingly connect the connecting member with the bottom pressing block by providing a second sealing member.

16. The heat exchange apparatus according to claim 4, wherein the sheet portion comprises a first sheet and a second plate, the first sheet is fixed to the second sheet by welding, and a top or a bottom of the flange portion is fixed to the first sheet by welding; or the top or the bottom of the flange portion is fixed to the second sheet by welding;

and/or the core body member comprises a top pressing block, and the flange portion is fixed to the top pressing block by welding.

17. The heat exchange apparatus according to claim 8, wherein the connecting member comprises a second end portion, and the second end portion is fixed to the core body member by welding;

the first end portion comprises a first section and a second section, the first section of the first end portion protrudes into the second annular protruding portion, the second section does not protrude into the second annular protruding portion, an outer diameter of the second section is greater than an outer diameter of the first section, and the outer diameter of the second section is tapered toward the first section.

18. The heat exchange apparatus according to claim 11, wherein the core body member comprises a sixth plate, the core body member comprises a second blocking portion, the second blocking portion is part of the sixth sheet or the second blocking portion is fixed to the sixth sheet by welding, the second blocking portion is located in the second conduit, the second conduit comprises a third sub conduit and a fourth sub conduit, the third sub conduit is located on one side of the second blocking portion, and the fourth sub conduit is located on another side of the second blocking portion;

the second blocking portion is located below the first blocking portion along an extending direction of the first conduit providing that a side of the core body member arranged with the valve core member is taken as an upper side.