AIR HANDLING UNIT

An air handling unit includes a heat exchange cabinet and a fan cabinet. The heat exchange cabinet includes two first assembly components each being at one of two ends of the heat exchange cabinet in a height direction of the heat exchange cabinet. The fan cabinet includes a second assembly component at one end of the fan cabinet in a height direction and corresponding to the first assembly components. The heat exchange cabinet is configured to be in one of a first assembly state and a second assembly state. In the first assembly state, the first assembly component at one of the two ends of the heat exchange cabinet is connected to the second assembly component. In the second assembly state, the first assembly component at another one of the two ends of the heat exchange cabinet is connected to the second assembly component.

Skip to: Description  ·  Claims  · Patent History  ·  Patent History
Description
CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims priority to Chinese patent application No. 202210847448.1, entitled “AIR HANDLING UNIT,” filed on Jun. 19, 2022, and No. 202221868211.3, entitled “AIR HANDLING UNIT,” filed on Jun. 19, 2022, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The disclosure relates to the technical field of air conditioning equipment, in particular to an air handling unit.

BACKGROUND

The air handling unit is generally installed in an attic or a basement. Because an installation environment is complex and an installation space is small, a structure assembled by combining a plurality of cabinet modules is usually adopted, and different installation directions are required to be selected according to an actual installation environment. Related air handling unit can only support one or two installation directions, so the air handling unit cannot be used in all kinds of complicated installation environments, and it is difficult to align multiple modules in a small space, which leads to a low installation efficiency.

SUMMARY

The present disclosure is directed to at least partially solving one of the technical problems existing in the related technology. Therefore, an air handling unit is disclosed in the present disclosure, which can adapt to different installation environments and realize rapid assembly.

The air handling unit according to an embodiment of the present disclosure includes: a heat exchange cabinet, where two ends of the heat exchange cabinet in a height direction respectively includes a first assembly component; and a fan cabinet, where one end of the fan cabinet in a height direction is provided with a second assembly component corresponding to the first assembly component. The heat exchange cabinet is configured to have two assembly states. In response to the heat exchange cabinet being in a first assembly state, the first assembly component at one of the two ends of the heat exchange cabinet is connected to the second assembly component of the fan cabinet. In response to the heat exchange cabinet being in a second assembly state, the first assembly component at another end of the two ends of the heat exchange cabinet is connected to the second assembly component of the fan cabinet.

According to the air handling unit of the embodiment of the present disclosure, at least the following beneficial effects are achieved.

The two ends of the heat exchange cabinet along the height direction are respectively provided with the first assembly component, and one end of the fan cabinet along the height direction is provided with the second assembly component corresponding to the first assembly component, so that the fan cabinet and the heat exchange cabinet can be detachably connected. Therefore, when the air handling unit is assembled, the heat exchange cabinet has two assembly states, and an installation personnel can selectively connect the first assembly component at one end of the heat exchange cabinet with the second assembly component of the fan cabinet, or connect the first assembly component at another end of the heat exchange cabinet with the second assembly component of the fan cabinet according to an installation environment, so that the air handling unit can be quickly assembled and disassembled and adapts to different installation directions, an assembly difficulty is effectively reduced, and an assembly efficiency is improved. When the air handling unit is required to change the installation direction, an installation personnel only needs to assemble the fan cabinet at another end of the heat exchange cabinet in a reversing manner without taking out and reversing the heat exchange assembly in the heat exchange cabinet, so that a structure of the heat exchange assembly is simplified, the assembly difficulty of the air handling unit is reduced, and the assembly efficiency of the air handling unit is improved.

According to some embodiments of the present disclosure, the first assembly component includes a first positioning frame and a first connection mechanism. The second assembly component includes a second positioning frame and a second connection mechanism. In response to the heat exchange cabinet being in the first assembly state or the second assembly state, the first positioning frame and the second positioning frame are matched and positioned, and the first connection mechanism is detachably connected with the second connection mechanism.

According to some embodiments of the present disclosure, the first positioning frame has one of a positioning protrusion and a positioning recess, and the second positioning frame has another one of the positioning protrusion and the positioning recess.

According to some embodiments of the present disclosure, the positioning protrusion is provided with a first matching surface. The positioning recess is provided with a second matching surface. The second matching surface abuts against the first matching surface. The first matching surface and the second matching surface are inclined surfaces or arc surfaces that are matched with each other.

According to some embodiments of the present disclosure, the heat exchange cabinet includes a first enclosure plate which is a sheet metal member and formed by extending along a circumferential direction of the heat exchange cabinet, and each of two first positioning frames is a plastic member and connected to an end of the first enclosure plate.

According to some embodiments of the present disclosure, the end of the first enclosure plates is provided with a first positioning member and a first installation member which is connected to the first positioning portion. The first positioning member is arranged around a part of an outer peripheral wall of the first positioning frame. The first installation member extends towards a center of the heat exchange cabinet. The first positioning frame is fixedly connected to the first installation member.

According to some embodiments of the present disclosure, the outer peripheral wall of the first positioning frame is provided with a first positioning groove, and the first positioning member is disposed in the first positioning groove.

According to some embodiments of the present disclosure, one of the first and second connection mechanisms is a snap seat including a first snap part, and another one of the first and second connection mechanisms includes: a base including a first connection part; a snap cover, which includes a second connection part and a third connection part, where, the second connection part is disposed at one end of the snap cover and is hinged with the first connection part, so that another end of the snap cover is capable of rotating to be close to or far away from the base, and the third connection part and the second connection part are arranged spaced apart; and a closing cover, where, one end of the closing cover includes a fourth connection part which is hinged with the third connection part, and another end of the closing cover includes a second snap part which is snapped with the first snap part.

According to some embodiments of the present disclosure, the first connection mechanism is the snap seat. The second connection mechanism further includes a first fixation bolt and a torsion spring. The first connection part and the second connection part are connected by the first fixation bolt. The torsion spring is sleeved on the first fixation bolt. A first torsion arm of the torsion spring abuts against the base, and a second torsion arm of the torsion spring abuts against the snap cover to apply an elastic force to the snap cover to rotate the snap cover towards the base.

According to some embodiments of the present disclosure, the first connection part includes two first lugs which are disposed spaced apart. Each of the two first lugs is provided with a first through hole. The snap cover includes a front panel and two side panels. Each of the two side panels is respectively arranged at a respective one of two sides of the front panel. The second connection part includes two second through holes, each of the two second through holes is respectively arranged on a respective one of the two side panels. The first fixation bolt penetrates through the first through hole and each of the second through holes.

According to some embodiments of the present disclosure, each of two sides of the front panel is provided with an avoidance groove for avoiding a respective one of the two first lugs, and the two first lugs are disposed between the two side panels.

According to some embodiments of the present disclosure, the first connection mechanism is the snap seat. The base is provided with a first lock member. The second connection mechanism further includes a lock mechanism. The lock mechanism includes a second lock member, a connection member and a grip. The second lock member is located on a side of the snap cover facing the base. One end of the connection member is connected with the second lock member, and another end of the connection member penetrates through the snap cover and is connected with the grip. The grip is capable of driving the second lock member to be locked or unlocked with the first lock member.

According to some embodiments of the present disclosure, the connection member is a rotation shaft. Two ends of the rotation shaft are respectively connected to the second lock member and the grip. The first connection part and the first lock member are respectively disposed at upper and lower ends of the base, and the second lock member and the grip are both of a long strip structure and have the same length direction.

According to some embodiments of the present disclosure, one of the first and second connection mechanisms includes a connection arm, another one of the first and second connection mechanisms includes a fitting hole. The connection arm extends towards the fitting hole and is connected to the fitting hole by a fastener.

According to some embodiments of the present disclosure, the air handling unit further includes a filter screen plate which is removably connected to the first positioning frame adjacent to an air intake side of the heat exchange cabinet.

According to some embodiments of the present disclosure, the first positioning frame is provided with a plurality of magnets along a circumferential direction, and the filter screen plate is connected to the plurality of magnets.

Additional aspects and advantages of the present disclosure will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosure.

BRIEF DESCRIPTION OF DRAWINGS

The disclosure is further described with reference to the following figures and examples, in which:

FIG. 1 is a schematic view of an air handling unit according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of a heat exchange cabinet shown in FIG. 1;

FIG. 3 is a cross-sectional view of the air handling unit shown in FIG. 1;

FIG. 4 is a schematic view of the air handling unit in a normal installation state according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of the air handling unit in an inverted installation state according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of the air handling unit in a left horizontal installation state according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of the air handling unit in a right horizontal installation state according to an embodiment of the present disclosure;

FIG. 8 is an enlarged view at A in FIG. 3;

FIG. 9 is an enlarged perspective view at A in FIG. 3;

FIG. 10 is a schematic view of an air handling unit according to another embodiment of the present disclosure;

FIG. 11 is an exploded view of the heat exchange cabinet shown in FIG. 10;

FIG. 12 is a schematic view of an embodiment of a connection assembly shown in FIG. 1;

FIG. 13 is an exploded view of the connection assembly shown in FIG. 12;

FIG. 14 is a cross-sectional view of an air handling unit according to another embodiment of the present disclosure;

FIG. 15 is an enlarged view at B in FIG. 14 with the connection assembly in an unlocked state;

FIG. 16 is an enlarged view at C in FIG. 14 with the connection assembly in a locked state;

FIG. 17 is a schematic view of another embodiment of the connection assembly shown in FIG. 1;

FIG. 18 is an exploded view of the connection assembly shown in FIG. 17;

FIG. 19 is a partial cross-sectional view of an air handling unit according to another embodiment of the present disclosure;

FIG. 20 is an enlarged view at D in FIG. 19 with the connection assembly in a locked state;

FIG. 21 is an enlarged view at D in FIG. 19 with the connection assembly in an unlocked state:

FIG. 22 is a schematic view of an air handling unit according to yet another embodiment of the present disclosure; and

FIG. 23 is an exploded view of the air handling unit shown in FIG. 22.

 REFERENCE NUMERALS

    • heat exchange module 1000; cabinet door 1100; fan module 2000; filter screen module 3000; heat exchange cabinet 100; first positioning frame 110; positioning recess 111; second matching surface 112; first mounting hole 113; first positioning groove 114; first positioning edge 115; magnet 116; first connection mechanism 120; fitting hole 121; first enclosure plate 130; first positioning member 140; first installation member 150; second mounting hole 151; heat insulation cotton 160;
    • fan cabinet 200; second positioning frame 210; positioning protrusion 211; first matching face 212; second positioning groove 213; second connection mechanism 220; connection arm 221; second enclosure plate 230; second positioning member 240; second installation member 250;
    • heat exchange assembly 300; heat exchanger 310; primary water tray 320; secondary water tray 330;
    • fan assembly 400;
    • electric heating assembly 500;
    • connection assembly 600;
    • base 610; first connection part 611; first lug 6111; first through hole 6112; first folded edge 612; second folded edge 613; recessed part 614; first lock member 615;
    • snap seat 620; first snap part 621; chamfer 6211;
    • snap cover 630; second connection part 631; third connection part 632; third through hole 6321; front panel 633; avoidance groove 6331; side panel 634; second through hole 6341; first snap groove 635; turnup part 636;
    • closing cover 640; fourth connection part 641; second lug 6411; fourth through hole 6412; second snap groove 6413; second snap part 642;
    • first fixation bolt 650; first snap post 651;
    • torsion spring 660; first torsion arm 661; second torsion arm 662;
    • second fixation bolt 670; second snap post 671;
    • lock mechanism 680; second lock member 681; connection member 682; rotation shaft 6821; grip 683; grip part 6831; sleeve part 6832; fixation pin 6833;
    • filter screen plate 700;
    • handle 800;
    • avoidance recess part 900.

DETAILED DESCRIPTION

Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, in which like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present disclosure, and are not to be construed as limiting the scope of the present disclosure.

In the description of the present disclosure, it should be understood that orientation descriptions, such as “above,” “below,” and the like which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings, and are only for convenience of describing the present disclosure and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and thus should not be construed as limiting the present disclosure.

In the description of the present disclosure, “a plurality” means two or more. If there is a description of “first” or “second” referring to a technical feature, it is only for the purpose of distinguishing the technical feature, and it is not to be understood as indicating or implying a relative importance or implicitly indicating the number or the precedence of the technical feature.

In the description of the present disclosure, unless otherwise specified, terms such as arrange, install, connect and the like should be understood broadly, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present disclosure in combination with the details of the technical schemes.

Referring to FIG. 1, an air handling unit according to an embodiment of the present disclosure includes a plurality of cabinet modules detachably assembled to facilitate an installation or a transportation in a narrow space. For example, the air handling unit according to the embodiment of the present disclosure includes a fan module 2000 and a heat exchange module 1000, and a through airflow channel (not shown) is formed respectively in the fan module 2000 and the heat exchange module 1000. An airflow entering from an air inlet (not shown) of the air handling unit passes through the fan module 2000 and the heat exchange module 1000, and is blown out from an air outlet (not shown) of the air handling unit after the airflow is cooled or heated. In order to facilitate the installation of the air handling unit, the fan module 2000 and the heat exchange module 1000 are both arranged in a square column structure to facilitate a vertical installation or a horizontal installation of the air handling unit. The fan module 2000 and the heat exchange module 1000 may also be arranged in a cylindrical structure or other polygonal column structure, such as a hexagonal column structure, which is not limited herein.

Referring to FIGS. 2 and 3, the heat exchange module 1000 includes a heat exchange cabinet 100, and a heat exchange assembly 300 and the like installed in the heat exchange cabinet 100. The heat exchange assembly 300 includes a heat exchanger 310, a primary water tray 320 and a secondary water tray 330. The primary water tray 320 is arranged at one end of the heat exchanger 310, and fixedly connected to the heat exchanger 310. The secondary water tray 330 is connected to the primary water tray 320, and arranged on a side of the heat exchanger 310. The secondary water tray 330 is opposite a sidewall of the heat exchange cabinet 100.

Referring to FIG. 3, the fan module 2000 includes a fan cabinet 200, and a fan assembly 400, an electric heating assembly 500, an electric control cabinet (not shown) and the like. The fan assembly 400, the electric heating assembly 500, the electric control cabinet and the like are mounted in the fan cabinet 200. A negative pressure is generated within the fan assembly 400, thereby driving the airflow within the airflow channel. The electric heating assembly 500 is configured to heat the airflow within the airflow channel. The electric control cabinet is configured to control an operation of the fan assembly 400 and the electric heating assembly 500.

Referring to FIG. 1, the fan module 2000 and the heat exchange module 1000 can be quickly assembled and disassembled by a connection assembly 600, thereby improving an assembly and maintenance efficiency of the air handling unit. It should be understood that the air handling unit of the present disclosure may further include a filter screen module 3000 in which a filter element (not shown) such as a high efficiency filter may be disposed. The assembly between the filter screen module 3000 and the fan module 2000 or the heat exchange module 1000 can also be realized by using the connection assembly 600 of the embodiments of the present disclosure.

Referring to FIG. 1, in the air handling unit according to an embodiment of the present disclosure, the fan cabinet 200, the heat exchange cabinet 100, and the filter screen module 3000 are sequentially connected in an up-down direction. Two ends of the heat exchange cabinet 100 in a height direction of the heat exchange cabinet 100 are respectively provided with a first assembly component (not shown). One end of the fan cabinet 200 in a height direction of the fan cabinet 200 is provided with a second assembly component (not shown) corresponding to the first assembly component. The heat exchange cabinet 100 has a first assembly state in which the first assembly component at one end of the heat exchange cabinet 100 is connected with a second assembly component of the fan cabinet 200, and a second assembly state in which the first assembly component of another end of the heat exchange cabinet 100 is connected with the second assembly component of the fan cabinet 200.

In the embodiment of the present disclosure, the first assembly component includes a first positioning frame 110 and a first connection mechanism 120, and the second assembly component includes a second positioning frame 210 and a second connection mechanism 220.

Referring to FIGS. 1 and 2, upper and lower ends of the heat exchange cabinet 100 is provided with the first positioning frame 110, respectively. Correspondingly, an end of the fan cabinet 200 which the heat exchange cabinet 100 is assembled with is provided with the second positioning frame 210. It should be understood that two first positioning frames 110 respectively located at the two ends of the heat exchange cabinet 100 may adopt an identical structure, and each of the two first positioning frames 110 can match with the second positioning frame 210 for positioning, so that the fan cabinet 200 and the two ends of the heat exchange cabinet 100 can be aligned. It should be understood that the two first positioning frames 110 respectively located at the two ends of the heat exchange cabinet 100 may also adopt different structures, and the second positioning frame 210 has a structure capable of being aligned and connected with the two first positioning frames 110 respectively, so that in response to the fan cabinet 200 and each of the two ends of the heat exchange cabinet 100 being connected respectively, the fan cabinet 200 can be aligned with each of the two ends of the heat exchange cabinet 100.

Referring to FIGS. 1 and 2, the two ends of the heat exchange cabinet 100 are respectively provided with the first connection mechanism 120 on a sidewall of the heat exchange cabinet 100. Correspondingly, a sidewall of the fan cabinet 200 is provided with the second connection mechanism 220, which can be combined with the first connection mechanism 120 located at each end of the heat exchange cabinet 100 to form the connection assembly 600, so that the fan cabinet 200 can be detachably connected with the heat exchange cabinet 100. Therefore, in response to the air handling unit of the embodiment of the present disclosure being assembled, an installation personnel can selectively install the fan cabinet 200 at one end of the heat exchange cabinet 100 according to an installation environment, so that the air handling unit can be quickly assembled and disassembled and can adapt to different installation directions, thereby effectively reducing an assembly difficulty and improving an assembly efficiency. Moreover, in response to the air handling unit needing to change an installation direction, an installation personnel only needs to assemble the fan cabinet 200 at another end of the heat exchange cabinet 100 in a reversing manner without taking out and reversing the heat exchange assembly 300 in the heat exchange cabinet 100, thereby simplifying a structure of the heat exchange assembly 300 reducing the assembly difficulty of the air handling unit, and improving the assembly efficiency of the air handling unit.

Referring to FIG. 4, a schematic view of the air handling unit according to the embodiment of the present disclosure in a normal installation state is shown, where an airflow direction is from bottom to top. The heat exchange module 1000 of the embodiment of the present disclosure is installed below the fan module 2000. The first positioning frame 110 at an upper end of the heat exchange module 1000 is connected to the second positioning frame 210 of the fan module 2000 in an aligned manner, and the first connection mechanism 120 at the upper end of the heat exchange module 1000 is connected to the second connection mechanism 220 of the fan module 2000. The air handling unit of the embodiment of the present disclosure can meet a requirement of vertical installation and adopt an installation environment that air enters from below and exits from above, and at this time, the heat exchanger 310 drains water by the primary water tray 320.

Referring to FIG. 5, a schematic view of the air handling unit according to the embodiment of the present disclosure in an inverted installation state is shown, where the airflow direction is from top to bottom. The heat exchange module 1000 of the embodiment of the present disclosure is installed above the fan module 2000. The first positioning frame 110 at a lower end of the heat exchange module 1000 is connected to the second positioning frame 210 of the fan module 2000 in an aligned manner, and the first connection mechanism 120 at the lower end of the heat exchange module 1000 is connected to the second connection mechanism 220 of the fan module 2000. The air handling unit of the embodiment of the present disclosure can meet the requirement of vertical installation and adopt the installation environment that the air enters from above and exits from below, and at this time, the heat exchanger 310 drains water by the primary water tray 320.

Referring to FIG. 6, a schematic view of the air handling unit according to the embodiment of the present disclosure in a left horizontal installation state is shown, where the airflow direction is from right to left. The heat exchange module 1000 of the embodiment of the present disclosure is installed on a right side of the fan module 2000. The first positioning frame 110 on a left side of the heat exchange module 1000 is connected to the second positioning frame 210 of the fan module 2000 in an aligned manner, and the first connection mechanism 120 on the left side of the heat exchange module 1000 is connected to the second connection mechanism 220 of the fan module 2000. The air handling unit of the embodiment of the present disclosure can meet the requirement of horizontal installation and adopt the installation environment that the air enters from right and exits from left, and at this time, the heat exchanger 310 drains water by the secondary water tray 330.

Referring to FIG. 7, a schematic view of the air handling unit according to the embodiment of the present disclosure in a right horizontal installation state, where the airflow direction is from left to right. The heat exchange module 1000 of the embodiment of the present disclosure is installed on a left side of the fan module 2000. The first positioning frame 110 on a right side of the heat exchange module 1000 is connected to the second positioning frame 210 of the fan module 2000 in an aligned manner, and the first connection mechanism 120 on the right side of the heat exchange module 1000 is connected to the second connection mechanism 220 of the fan module 2000. The air handling unit of the embodiment of the present disclosure can meet the requirement of horizontal installation and adopt the installation environment that the air enters from left and exits from right, and at the time, the heat exchanger 310 drains water by the secondary water tray 330.

Referring to FIGS. 4 to 7, it should be understood that the air handling unit according to the embodiment of the present disclosure can conveniently implement a plurality of installation directions, and compared with the schemes in related technology, the heat exchange assembly 300 does not need to be taken out and reversed, thereby reducing the assembly steps, and improving the assembly efficiency. An additional secondary water tray 330 is not needed, thereby reducing wind resistance, and a production cost. An additional rear water tray (which is positioned at an end of the heat exchanger 310 away from the primary water tray 320) is not needed, thereby further reducing the production cost.

Referring to FIGS. 3, 8 and 9, in the air handling unit according to the embodiment of the present disclosure, the first positioning frame 110 may extend along a circumferential edge of the heat exchange cabinet 100 or a part of the circumferential edge of the heat exchange cabinet 100. An upper end of the fan cabinet 200 is provided with the second positioning frame 210 extending along a circumferential edge of the heat exchange cabinet 100 or along a part of the circumferential edge of the fan cabinet 200. The second positioning frame 210 is matched with the first positioning frame 110, so that the heat exchange cabinet 100 and the fan cabinet 200 are fixed to each other. It should be understood that the first positioning frame 110 has a positioning recess 111, which may be formed as a partial structure of the first positioning frame 110 or an entire structure of the first positioning frame 110. The second positioning frame 210 has a positioning protrusion 211, which may be formed as a partial structure of the second positioning frame 210 or an entire structure of the second positioning frame 210. The positioning recess 111 is matched with the positioning protrusion 211, so that when an installation personnel assembles the heat exchange cabinet 100 and the fan cabinet 200, the heat exchange cabinet 100 and the fan cabinet 200 can be conveniently guided to be centered. Moreover, the positioning protrusion 211 is provided with a first matching surface 212, and the positioning recess 111 is provided with a second matching surface 112, so that in response to the heat exchange cabinet 100 and the fan cabinet 200 being installed, the heat exchange cabinet 100 and the fan cabinet 200 can realize an alignment connection under an abutting action of the first matching surface 212 and the second matching surface 112, thereby stabilizing that the connection between the two, and improving the assembling efficiency and the assembling precision of the heat exchange cabinet 100 and the fan cabinet 200. In some embodiments, it should be understood that, the first positioning frame 110 of the heat exchange cabinet 100 may has a positioning protrusion 211, and correspondingly, the second positioning frame 210 of the fan cabinet 200 has a positioning recess 111, which is matched with the positioning protrusion 211.

It should be understood that, the first matching surface 212 and the second matching surface 112 may be inclined surfaces or arc surfaces which are matching with each other. In response to the first matching surface 212 and the second matching surface 112 being inclined surfaces, the first matching surface 212 may be disposed on an inner side of the positioning recess 111 facing the heat exchange cabinet 100, the first matching surface 212 may be disposed on a side of the positioning protrusion 211 facing a center of the fan cabinet 200, and the second matching surface 112 may be disposed on a side of the positioning recess 111 facing a center of the heat exchange cabinet 100, so that the first positioning frame 110 and the second positioning frame 210 are aligned more smoothly, and the heat exchange cabinet 100 and the fan cabinet 200 can be assembled and disassembled quickly. The larger a total contact area of the first inclined surface and the second inclined surface is, the more stable the connection of the first positioning frame 110 and the second positioning frame 210 is, so a stability of the connection of the heat exchange cabinet 100 and the fan cabinet 200 is further improved. In response to the first matching surface 212 and the second matching surface 112 being arc surfaces, the first matching surface 212 may be disposed at an end of the positioning protrusion 211 facing the first positioning frame 110, and the second matching surface 112 may be disposed at an end of the positioning recess 111 facing the second positioning frame 210, so that the design of the arc surfaces enables the positioning protrusion 211 to be smoothly guided into the positioning recess 111, thereby achieving an alignment of the first positioning frame 110 and the second positioning frame 210, and further enabling the heat exchange cabinet 100 and the fan cabinet 200 to be rapidly assembled and disassembled.

Referring to FIGS. 8 and 9, it should be understood that, the heat exchange cabinet 100 includes a first enclosure plate 130 and two first positioning frames 110. The first enclosure plate 130 is formed by extend along a circumferential direction of the heat exchange cabinet 100, and each of the two first positioning frames 110 is fixedly connected to a respective one of two ends of the first enclosure plate 130 along an axial direction of the heat exchange cabinet 100. The first enclosure plate 130 is a sheet metal member, which can be formed by processes of stamping, plate bending and the like. The first positioning frame 110 is a plastic member, which may be formed by injection molding. The heat exchange cabinet 100 of the embodiment of the present disclosure adopts a structure combining sheet metal and plastics, so that a processing difficulty can be reduced while a strength is improved. For example, the heat exchange cabinet 100 according to an embodiment of the present disclosure is integrally formed by sheet metal processing relative to the heat exchange cabinet 100, and only the first enclosure plate 130 is processed, so that the processing difficulty can be reduced, and the processing efficiency can be improved. Compared with related technology that the whole heat exchange cabinet 100 is made of plastics processing, only the first positioning frame 110 is processed by injection molding in the embodiment of the present disclosure, which can reduce the processing difficulty, improve the processing efficiency and has lower production cost.

It should be understood that the first positioning frame 110 made of plastics can wrap appearance defects of the first enclosure plate 130 made of sheet metal, so that the appearance defects of the first enclosure plate 130 are covered, and the first positioning frame 110 and the first enclosure plate 130 are assembled more firmly.

Referring to FIGS. 8 and 9, taking an upper portion of the heat exchange cabinet 100 as an example, it should be understood that, an upper end of the first enclosure plate 130 is provided with a first positioning member 140, and the first positioning member 140 is arranged around a part of an outer peripheral wall of the first positioning frame 110, so that the first positioning frame 110 is embedded in a surrounding space of the first positioning member 140, and the first positioning frame 110 and the first enclosure plate 130 are connected in a positioning manner. In order to further improve a connection stability between the first positioning frame 110 and the first enclosure plate 130, a first installation member 150 connected to the first positioning member 140 extends towards the center of the heat exchange cabinet 100, and the first positioning frame 110 may be fixedly connected to the first installation member 150 by riveting, screwing, clamping, bonding, or the like.

It should be understood that, the first enclosure plate 130 may form the first positioning member 140 and the first installation member 150 by a secondary bending process. For example, the first positioning member 140 is formed by bending and folding the first enclosure plate 130 inward, i.e., a U-shaped structure is formed, thereby increasing a structural strength of the first positioning member 140. The first installation member 150 is formed by bending the first enclosure plate 130 toward the center of the heat exchange cabinet 100 again, i.e., an L-shape is formed by the first installation member 150 and the first positioning member 140. Therefore, in response to the first positioning frame 110 being mounted on the first enclosure plate 130, the first positioning member 140 can be used for positioning, and the first installation member 150 can be used for stable connection, thereby improving the assembly efficiency of the heat exchange cabinet 100.

Referring to FIG. 9, one end of the first positioning frame 110 facing the first installation member 150 is provided with a first mounting hole 113, the first installation member 150 is provided with a second mounting hole 151, and a fastening piece penetrates through the first mounting hole 113 and the second mounting hole 151, so that a stable connection between the first positioning frame 110 and the first enclosure plate 130 is achieved, and the assembly is more convenient.

It should be understood that, in order to facilitate an installation of the first positioning frame 110, an axial direction of the first positioning frame 110 needs to be limited. For this purpose, the outer peripheral wall of the first positioning frame 110 is provided with a first positioning groove 114, in which the first positioning member 140 is arranged, and the first positioning member 140 is in an abutting fit with a bottom wall of the first positioning groove 114.

Referring to FIGS. 8 and 9, in order to improve a heat insulation effect of the heat exchange cabinet 100, a heat insulation cotton 160 needs to be adhered to the first enclosure plate 130. Therefore, in order to make an installation of the heat insulation cotton 160 more stable and convenient, the first positioning frame 110 extends towards inside of the heat exchange cabinet 100, and has a first positioning edge 115 arranged at an interval with the first enclosure plate 130, and the heat insulation cotton 160 is positioned and installed in a space between the first positioning edge 115 and the first enclosure plate 130.

Similarly, a lower end of the first enclosure plate 130 may also be formed with a first positioning member 140, and a connection structure between the first positioning member 140 and the first positioning frame 110 at the lower end of the first enclosure plate 130 is the same as that in the above description, and therefore, for avoiding repetition, the description is omitted.

Referring to FIGS. 3 and 9, it should be understood that the fan cabinet 200 includes a second enclosure plate 230 and a second positioning frame 210. The second enclosure plate 230 is formed by extending along a circumferential direction of the fan cabinet 200, and the second positioning frame 210 is fixedly connected to one end of the second enclosure plate 230 facing the heat exchange cabinet 100. The second enclosure plate 230 is a sheet metal part, which can be formed by processes of stamping, plate bending and the like. The second positioning frame 210 is a plastic member, which may be formed by injection molding. The fan cabinet 200 of the embodiment of the present disclosure adopts a structure combining sheet metal and plastics, so that the processing difficulty can be reduced while the strength is improved. For example, the fan cabinet 200 of an embodiment of the present disclosure is integrally formed by sheet metal processing relative to the fan cabinet 200, and only the second enclosure plate 230 is processed, so that the machining difficulty can be reduced, and the processing efficiency can be improved. Compared with related technology that the whole fan cabinet 200 is made of plastics processing, only the second positioning frame 110 is processed by injection molding in the embodiment of the present disclosure, which can reduce the processing difficulty, improve the processing efficiency and has lower production cost.

Referring to FIGS. 8 and 9, taking a lower portion of the fan cabinet 200 as an example, it should be understood that a lower end of the second enclosure plate 230 is provided with a second positioning member 240 arranged around a part of an outer peripheral wall of the second positioning frame 210, so that the second positioning frame 210 is embedded in a surrounding space of the second positioning member 240, and the second positioning frame 210 and the second enclosure plate 230 are connected in a positioning manner. In order to further improve a connection stability between the second positioning frame 210 and the second enclosure plate 230, a second installation member 250 connected to the second positioning member 240 extends towards the center of the fan cabinet 200, and the second positioning frame 210 may be fixedly connected to the second installation member 250 by riveting, screwing, clamping, bonding, or the like.

It should be understood that, the second enclosure plate 230 may form the second positioning member 240 and the second installation member 250 by a secondary bending process. For example, the second positioning member 240 is formed by bending and folding the second enclosure plate 230 inward, i.e., a U-shaped structure is formed, thereby increasing a structural strength of the second positioning member 240. The second installation member 250 is formed by bending the second enclosure plate 230 toward the center of the fan cabinet 200 again, i.e., an L-shape is formed by the second installation member 250 and the second positioning member 240. Therefore, in response to the second positioning frame 220 being mounted on the second enclosure plate 230, the second positioning member 240 can be used for positioning, and the second installation member 250 can be used for stable connection, thereby improving the assembly efficiency of the fan cabinet 200.

It should be understood that, in order to facilitate an installation of the second positioning frame 210, an axial direction of the second positioning frame 210 needs to be limited. For this purpose, the outer peripheral wall of the second positioning frame 210 is provided with a second positioning groove 213, in which the second positioning member 240 is arranged, and the second positioning member 240 is in an abutting fit with a bottom wall of the second positioning groove 213.

Referring to FIGS. 10 and 11, an air handling unit according to another embodiment of the present disclosure includes the heat exchange module 1000 and the fan module 2000. The air handling unit of the embodiment of the present disclosure is not provided with the filter screen module 3000, so the heat exchange module 1000 is further provided with a filter screen plate 700. The filter screen plate 700 is detachably connected to the first positioning frame 110, for example, the filter screen plate 700 is installed outside the first positioning frame 110, i.e., is away from of the center of the heat exchange cabinet 100, thereby facilitating assembly and disassembly. It should be understood that, the filter screen plate 700 can be detachably connected to the two first positioning frames 110, so that the filter screen plate 700 can be installed at one end of the heat exchange cabinet 100 after another end of the heat exchange cabinet 100 is connected to the fan cabinet 200. It should be noted that an installation position of the filter screen plate 700 needs to be selected according to an installation direction of the air handling unit and an assembly state of the heat exchange module 1000, i.e., the filter screen plate 700 is installed on the first positioning frame 110 near an air inlet side of the heat exchange cabinet 100, thereby achieving effective filtration of the airflow entering the air handling unit.

Referring to FIGS. 10 and 11, the filter screen plate 700 and the first positioning frame 110 may be detachably connected to each other by an absorption connection, a screw connection, or a snap connection, etc.

Referring to FIG. 11, it should be understood that the first positioning frame 110 is provided with a plurality of magnets 116 along a circumference of the airflow channel, and the plurality of magnets 116 may be embedded in a bottom wall of the first positioning frame 110. Correspondingly, the filter screen plate 700 is a metal piece, or a metal surrounding edge is arranged on a periphery of the filter screen plate 700 matched with the first positioning frame 110, so that the filter screen plate 700 is connected with the plurality of magnets 116 in an adsorption manner.

Referring to FIGS. 2 and 11, it should be understood that one side of the heat exchange cabinet 100 is provided with an opening (not shown) communicated with the airflow channel, and the heat exchange assembly 300 can be installed into the heat exchange cabinet 100 through the opening, for example, by a sliding connection or a snap-fitting, etc. to achieve a quick installation. The heat exchange module 1000 further includes a cabinet door 1100 mounted to the opening of the heat exchange cabinet 100 to seal the opening. It should be noted that the cabinet door 1100 is generally designed as an easily removable component, which facilitates after-sales maintenance of the heat exchange module 1000. For example, the cabinet door 1100 may be mounted to the heat exchange cabinet 100 by an adsorption connection or the like.

Referring to FIGS. 1 and 2, handles 800 are provided on two opposite sidewalls of the heat exchange cabinet 100 and the fan cabinet 200 respectively, so that an installation personnel can conveniently carry the heat exchange module 1000 and the fan module 2000. In order to allow the air handling unit to be horizontally positioned, the handle 800 has a concave structure formed by recessing the heat exchange cabinet 100 and the fan cabinet 200.

Referring to FIGS. 1 and 2, a connection assembly 600 according to an embodiment of the present disclosure is configured to detachably connect a heat exchange cabinet 100 and a fan cabinet 200. The connection assembly 600 is installed at connection portions of the heat exchange cabinet 100 and the fan cabinet 200, and the connection assembly 600 includes the first connection mechanism 120 and the second connection mechanism 220. A plurality of first connection mechanisms 120 may be provided. The plurality of first connection mechanisms 120 are divided into two groups. The two groups of the first connection mechanisms 120 are respectively provided at two ends of the heat exchange cabinet 100, and each group of the first connection mechanisms 120 may be mounted on two opposite sidewalls of the heat exchange cabinet 100, or mounted on three sidewalls or four sidewalls of the heat exchange cabinet 100. Correspondingly, a plurality of second connection mechanisms 220 may be provided. The plurality of second connection mechanisms 220 are respectively provided at two ends of the heat exchange cabinet 100. The plurality of first connection mechanisms 120 may be mounted on two opposite sidewalls of the heat exchange cabinet 100, or mounted on three sidewalls or four sidewalls of the heat exchange cabinet 100. In order to improve the stability of the connection between the heat exchange cabinet 100 and the fan cabinet 200, two connection assemblies 600 may be provided at each sidewall of the air handling unit according to the embodiment of the present disclosure, or three or more connection assemblies may be provided, which is not particularly limited herein.

Referring to FIGS. 12 and 13, the first connection mechanism 120 of the embodiment of the present disclosure is a snap seat 620 fixedly connected to the heat exchange cabinet 100. The second connection mechanism 220 includes a base 610 fixedly connected to the fan cabinet 200. The base 610 and the snap seat 620 are arranged spaced apart in an up and down direction. It should be understood that the base 610 may be connected to the fan cabinet 200 by a fastener such as a screw, and corresponding positions of the base 610 and the sidewall of the fan cabinet 200 may be respectively preprocessed a mounting structure such as a mounting hole to facilitate assembly of the fastener. Moreover, the snap seat 620 may be connected to the heat exchange cabinet 100 by a fastening member such as a screw.

Referring to FIG. 13, the second connection mechanism 220 of the embodiment of the present disclosure further includes a snap cover 630 and a closing cover 640. The base 610 is provided with a first connection part 611, one end of the snap cover 630 is provided with a second connection part 631 hinged to the first connection part 611. The snap cover 630 is further provided with a third connection part 632 arranged spaced apart from the second connection part 631. One end of the closing cover 640 has a fourth connection part 641 hinged to the third connection part 632. Another end of the closing cover 640 is provided with a second snap part 642, one end of the snap seat 620 away from the base 610 is provided with a first snap part 621 fastened with the second snap part 642.

Referring to FIGS. 14, 15 and 16, it should be understood that the snap cover 630 of the embodiment of the present disclosure is capable of driving the closing cover 640 to move relative to the snap seat 620, for example, driving the closing cover 640 to be fastened with the snap seat 620 and rotate to a position close to the base 610, so that another end of the snap cover 630 covers the base 610, and locking between the base 610 and the snap seat 620 is realized. Alternatively, the snap cover 630 is capable of rotating towards a direction away from the base 610, so that the another end of the snap cover 630 is separated from the base 610, and the closing cover 640 and the snap seat 620 are driven to be unlocked. The connection assembly 600 of the embodiment of the present disclosure can realize a locking or unlocking fit of the second snap part 642 and the first snap part 621, thereby realizing the locking or unlocking of the base 610 and the snap seat 620, further realizing the assembly and disassembly of the heat exchange cabinet 100 and the fan cabinet 200, and being convenient and fast to operate. Moreover, a structure of the connection assembly 600 is simple and stable.

Referring to FIGS. 13, 15 and 16, it should be understood that the first snap part 621 is a clamping platform. The clamping platform is formed by an upward protrusion of the snap seat 620, and the second snap part 642 is a clamping hole matched with the clamping platform. It should be understood that the second snap part 642 may also be a clamping groove (not shown) matched with the clamping platform, and a stable connection between the closing cover 640 and the snap seat 620 can also be achieved. In another embodiment, the first snap part 621 may also be configured as a card clamping groove, and correspondingly, the second snap part 642 may be configured as a clamping platform matched with the clamping groove.

It should be understood that, in response to the first snap part 621 being the clamping platform, one end of the clamping platform away from snap seat 620 is provided with a chamfer 6211, so that a locking or unlocking function of the closing cover 640 and snap seat 620 is facilitated to realize, and an operation convenience of the connection assembly 600 is promoted. It should be understood that in order to achieve a requirement of horizontal assembly of the air handling unit, i.e., the sidewall of the air handling unit being in contact with the ground, an overall structure of the connection assembly 600 cannot protrude from the sidewall of the air handling unit when the connection assembly 600 is in a locked state. Therefore, the heat exchange cabinet 100 and the fan cabinet 200 according to the embodiment of the present disclosure are respectively provided with an avoidance recess part 900 at a connection of the heat exchange cabinet 100 and the fan cabinet 200, and the connection assembly 600 is accommodated in two avoidance recess parts 900, that is, the first connection mechanism 120 is arranged in the avoidance recess part 900 of the heat exchange cabinet 100, and the second connection mechanism 220 is arranged in the avoidance recess part 900 of the fan cabinet 200.

Referring to FIGS. 13, 15 and 16, it should be understood that the second connection mechanism 220 of the embodiment of the present disclosure further includes a first fixation bolt 650. The first fixation bolt 650 may be fixedly connected to the first connection part 611, and the second connection part 631 is rotatably connected to the first fixation bolt 650, so that a stable relative rotation between the base 610 and the snap cover 630 can be achieved. In another embodiment, the first fixation bolt 650 may be fixedly connected to the second connection part 631, and the first connection part 611 is rotatably connected to the first fixation bolt 650.

It should be understood that the first connection part 611 includes two first lugs 6111. The two first lugs 6111 are disposed spaced apart in the base 610 along a left-right direction, and the two first lugs 6111 are respectively provided with a first through hole 6112. The snap cover 630 includes a front panel 633 and two side panels 634 respectively disposed at two sides of the front panel 633. The front panel 633 and the two side panels 634 may be integrally formed. The second connection part 631 is two second through holes 6341 respectively disposed on the two side panels 634. The first fixation bolt 650 penetrates through two first through holes 6112 and the two second through holes 6341. The first fixation bolt 650 is fixed to the two first lugs 6111 or fixed to the two side panels 634, thereby achieving a rotation connection between the base 610 and the snap cover 630. It should be understood that the two side panels 634 may be disposed between the two first lugs 6111. Alternately, the two first lugs 6111 may be disposed between the two side panels 634.

Referring to FIG. 3, it should be understood that, two sides of the front panel 633 is respectively provided with an avoidance groove 6331. Positions of two avoidance grooves 6331 are matched respectively with the two first lugs 6111. The two first lugs 6111 are arranged between the two side panels 634. Each of the avoidance grooves 6331 is configured to avoid a respective one of the first lugs 6111, so that when the snap cover 630 rotates relative to the base 610, an interference between the snap cover 630 and the first lugs 6111 can be avoided. Therefore, a thickness of the snap cover 630 can be designed to be smaller, an overall thickness of the connection assembly 600 in the locked state is smaller, use of the air handling unit is more convenient, and an avoidance space of the air handling unit can be saved. It should be understood that, in order to improve a stability of a fit between the two first lugs 6111 and the first fixation bolt 650, the two first lugs 6111 are respectively located at positions close to the two side panels 634, and the two avoidance grooves 6331 are respectively located at a connecting of the front panel 633 and the two side panels 634.

Referring to FIG. 3, it should be understood that the first fixation bolt 650 is fixedly connected to the snap cover 630, and each of the first lugs 6111 is rotatably connected with respect to the first fixation bolt 650. In order to make a connection between the first fixation bolt 650 and the snap cover 630 more stable, the snap cover 630 is provided with two first snap grooves 635. Each of the two first snap grooves 635 is disposed on a respective one of the two side panels 634, and is formed at a periphery of a respective one of the two second through holes 6341. Two ends of the first fixation bolt 650 are respectively provided with a first snap post 651, and the first snap post 651 is fixedly connected to a respective one of the two first snap grooves 635. For example, the first snap post 651 may be in an interference fit with the respective one of the two first snap grooves 635, or may be fixedly connected to the respective one of the two first snap grooves 635 by welding, which is not limited herein.

Referring to FIGS. 13, 15 and 16, it should be understood that the second connection mechanism 220 according to an embodiment of the present disclosure further includes a torsion spring 660 sleeved on the first fixation bolt 650, and one end of the torsion spring 660 has a first torsion arm 661 which abuts against the base 610, and another end of the torsion spring 660 has a second torsion arm 662 which abuts against the snap cover 630. It should be understood that the base 610 is provided with a first folded edge 612, and the first torsion arm 661 abuts against the first folded edge 612 for fixing. The second torsion arm 662 abuts against one end of the snap cover 630 facing the first fixation bolt 650, i.e., an end portion of the front panel 633, or abuts against an outer side of the front panel 633, so that an elastic force can be applied to the snap cover 630 to rotate the snap cover 630 towards the base 610, and a reaction force that prevents the snap cover 630 from opening exists in response to the snap cover 630 being opened outwards of the base 610, thereby effectively preventing the snap cover 630 from popping out, avoiding a situation that the snap cover 630 bounces up due to a slight collision in an actual use of the connection assembly 600, which further causes the closing cover 640 to be separated from the snap seat 620, resulting in unlocking of the connection assembly 600.

Referring to FIG. 13, a middle of the base 610 is recessed toward the fan cabinet 200 to form a recessed part 614 fixed to the sidewall of the fan cabinet 200 by a fastener such as a screw. Each of the left and right sides of the base 610 is formed with a second folded edge 613 abutting against the sidewall of the fan cabinet 200 so that the base 610 has a larger stress area to effectively prevent the base 610 from being deformed under a stress, and provide a stable support for the whole connection assembly 600.

Referring to FIG. 13, it should be understood that the second connection mechanism 220 further includes a second fixation bolt 670, which may be fixedly connected to the third connection part 632, and the fourth connection part 641 is rotatably connected to the second fixation bolt 670, so that a stable relative rotation between the closing cover 640 and the snap cover 630 can be achieved. In another embodiment, the second fixation bolt 670 may be further fixedly connected to the fourth connection part 641, and the third connection part 632 is rotatably connected to the second fixation bolt 670.

Referring to FIG. 13, it should be understood that the third connection part 632 is a third through hole 6321 respectively disposed on the two side panels 634 of the snap cover 630, and the third through hole 6321 is spaced apart from the second through hole 6341. The fourth connection part 641 includes two second lugs 6411. The two second lugs 6411 are disposed at the closing cover 640 spaced apart in the left-right direction. The two second lugs 6411 are respectively provided with a fourth through hole 6412. The second fixation bolt 670 penetrates through two third through holes 6312 and the two fourth through holes 6412. The second fixation bolt 670 is fixed to the two second lugs 6411 or the two side panels 634, thereby achieving a rotation connection between the closing cover 640 and the snap cover 630. It should be understood that the two second lugs 6411 are disposed between the two side panels 634. Alternately, the two side panels 634 are disposed between the two second lugs 6411

Referring to FIG. 13, it should be understood that the second fixation bolt 670 is fixedly connected to the closing cover 640. Each of the side panels 634 is rotatably connected to the second fixation bolt 670. Each of the two second lugs 6411 is provided with a second snap groove 6413 formed at a periphery of a respective one of the two fourth through holes 6412. Two ends of the second fixation bolt 670 are respectively provided with a second snap post 671 fixedly connected to a respective second snap groove 6413. For example, the second snap post 671 may be in an interference fit with the respective second snap groove 6413, or may be fixedly connected to the respective second snap groove 6413 by welding, which is not limited herein.

Referring to FIGS. 13, 15 and 16, it should be understood that one end of the snap cover 630 away from the second connection part 631 is provided with a turnup part 636, which may be integrally formed with the snap cover 630. The turnup part 636 can be used as the handle 800, so that when the snap cover 630 is opened, moment of force is increased, the snap cover 630 can be conveniently lifted, and the connection assembly 600 can be conveniently unlocked.

Referring to FIG. 17, a connection assembly 600 of another embodiment of the present disclosure, similar to the connection assembly 600 of the previous embodiment, may be understood with appropriate reference to the previous embodiment. Difference points are as follows. The second connection mechanism 220 of the embodiment of the present disclosure is further provided with a lock mechanism 680 including a second lock member 681, a connection member 682 and a grip 683. The second lock member 681 is located on an inner side of the snap cover 630, i.e., a side of the snap cover 630 facing the base 610. The base 610 is provided with a first lock member 615 matched with the second lock member 681.

It should be understood that the connection member 682 passes through the snap cover 630. One end of the connection member 682 located inside the snap cover 630 is fixedly connected to the second lock member 681. The connection member 682 can be connected to the second lock member 681 by a fastening member such as a screw, so that an assembly can be easily realized. One end of the connection member 682 located outside the snap cover 630 is connected to the grip 683. The grip 683 is connected to the second lock member 681 by the connection member 682, so that the grip 683 can drive the second lock member 681 to move relative to the first lock member 615, thereby achieving a locked state or an unlocked state. Referring to FIGS. 12 and 13, the lock mechanism 680 is in a locked state. Referring to FIGS. 14 and 15, the lock mechanism 680 is in an unlocked state. The connection assembly 600 according to the embodiment of the present disclosure is further provided with the lock mechanism 680, which can control the second lock member 681 and the first lock member 615 to achieve locking or unlocking in a sliding, swinging or rotating manner, thereby avoiding unlocking the connection assembly 600 caused by a bounce of the snap cover 630, and making the assembly of the heat exchange cabinet 100 and the fan cabinet 200 more stable.

Referring to FIGS. 18, 19, 20 and 21, it should be understood that the connection member 682 according to the embodiment of the present disclosure is a rotation shaft 6821. Two ends of the rotation shaft 6821 are respectively connected to the second lock member 681 and the grip 683. The grip 683 rotates to drive the rotation shaft 6821 to rotate, and then the second lock member 681 can be driven to rotate relative to the first lock member 615, so that the second lock member 681 is locked to the first lock member 615, or the second lock member 681 is unlocked from the first lock member 615. The lock mechanism 680 of the embodiment of the present disclosure is operated in a rotating manner, so that the operation is more convenient and the structure is simpler.

It should be understood that the first connection part 611 is provided at an upper end of the base 610, and the first lock member 615 is provided at a lower end of the base 610. The second lock member 681 is locked or unlocked by being relatively rotated with respect to the first lock member 615. In the connection assembly 600 of the embodiment of the present disclosure, the first lock member 615 is a card slot, and the second lock member 681 is a card capable of being engaged with the card slot. In order to make the lock mechanism 680 achieve better locking effect on the connection assembly 600, the second lock member 681 and the grip 683 are both configured to have long strip structures. A length direction of the second lock member 681 is configured to be the same as a length direction of the grip 683. In response to the lock mechanism 680 being in a locked state, the grip 683 can also form locking with the closing cover 640 and the snap cover 630, that is, the grip 683 in a vertical direction abuts against the closing cover 640 and the snap cover 630, thereby limiting a rotation between the closing cover 640 and the snap cover 630, and limiting the bounce of the snap cover 630. Moreover, the grip 683 can help to identify the locked or unlocked state of the second lock member 681 and the first lock member 615, that is, when the grip 683 is rotated to be placed along the vertical direction, the second lock member 681 and the first lock member 615 are in the locked state. At this time, the connection assembly 600 is also in the locked state, and the closing cover 640 is locked with the snap seat 620, so that the closing cover 640 and the snap cover 630 cannot rotate with each other, and the connection assembly 600 cannot be unlocked. In response to the grip 683 being rotated to be placed along a horizontal direction, the second lock member 681 and the first lock member 615 are in the unlocked state. At this time, the closing cover 640 and the snap cover 630 can rotate with each other, so that the connection assembly 600 can be operated to achieve unlocking. The grip 683 arranged outside the snap cover 630 is adopted in the embodiment of the present disclosure, so that an identification degree is higher.

Referring to FIGS. 20 and 21, it should be understood that, in order to reduce the overall thickness of the connection assembly 600, in response to the connection assembly 600 of the embodiment of the present disclosure being in the locked state, the grip 683 is required to have a structure that can swing and be close to the snap cover 630. Therefore, the grip 683 is provided with a fixation pin 6833 penetrating into a mounting hole of the rotation shaft 6821. An outer diameter of the fixation pin 6833 is slightly smaller than the mounting hole of the rotation shaft 6821, and the fixation pin 6833 is rotatably connected into the mounting hole of the rotation shaft 6821, so that the grip 683 can rotate relative to the rotation shaft 6821, and folding of the grip 683 is realized.

Referring to FIGS. 18 and 21, it should be understood that, in order to facilitate a mounting of the grip 683 and the connection member 682, the grip 683 includes a grip part 6831 and a sleeve part 6832. The grip part 6831 is of a plate-like structure. The sleeve part 6832 is disposed at an end of the grip part 6831, and connected to the fixation pin 6833. The sleeve part 6832 may be connected to the fixation pin 6833 by an interference fit, or by welding, screwing, or the like, which is not particularly limited herein.

It should be understood that, in another embodiment, the first connection mechanism 120 and the second connection mechanism 220 are interchangeable, that is, the second connection mechanism 220 is a snap seat 620, and the stable connection between the fan cabinet 200 and the heat exchange cabinet 100 can also be achieved.

Referring to FIGS. 22 and 23, an air handling unit according to another embodiment of the present disclosure includes a heat exchange module 1000, a fan module 2000, and a filter screen module 3000. The first connection mechanism 120 of the heat exchange module 1000 includes a plurality of fitting holes 121. Each of the two ends of the heat exchange cabinet 100 is provided with the avoidance recess part 900, and the fitting holes 121 are disposed in the avoidance recess part 900. The second connection mechanism 220 of the fan module 2000 is a connection arm 221. The connection arm 221 extends towards a direction away from the fan cabinet 200 to the fitting holes 121, and is fixedly connected to the fitting holes 121 at the upper end of the heat exchange cabinet 100 by a fastener such as a screw, thereby realizing a stable connection of the fan cabinet 200 and the heat exchange cabinet 100. The screen module 3000 is also provided with the connection arm 221 and is fixedly connected to the fitting holes 121 of another end of the heat exchange module 1000 by a fastener, thereby achieving a stable connection with the heat exchange module 1000.

It should be understood that, in another embodiment, the first connection mechanism 120 of the heat exchange module 1000 may be a connection arm 221, and correspondingly, the second connection mechanism 220 of the fan module 2000 includes a plurality of fitting holes 121. A connecting manner of the first connection mechanism 120 and the second connection mechanism 220 should be understood with reference to the above embodiments, and is not described herein again to avoid repetition.

The embodiments of the present disclosure have been described in detail with reference to the accompany drawings, but the present disclosure is not limited to the above embodiments, and various changes can be made within the knowledge of those having ordinary skill in the art without departing from the scope of the present disclosure.

Claims

1.-16. (canceled)

17. An air handling unit comprising:

a heat exchange cabinet, including two first assembly components each being at one of two ends of the heat exchange cabinet in a height direction of the heat exchange cabinet; and
a fan cabinet, including a second assembly component at one end of the fan cabinet in a height direction and corresponding to the first assembly components;
wherein the heat exchange cabinet is configured to be in one of: a first assembly state, in which the first assembly component at one of the two ends of the heat exchange cabinet is connected to the second assembly component; and a second assembly state, in which the first assembly component at another one of the two ends of the heat exchange cabinet is connected to the second assembly component.

18. The air handling unit of claim 17, wherein:

each of the first assembly components includes a first positioning frame and a first connection mechanism;
the second assembly component includes a second positioning frame and a second connection mechanism;
the first positioning frame and the second positioning frame are configured to match each other for positioning when the heat exchange cabinet is in the first assembly state or the second assembly state; and
the first connection mechanism and the second connection mechanism are configured to be detachably connected to each other when the heat exchange cabinet is in the first assembly state or the second assembly state.

19. The air handling unit of claim 18, wherein the first positioning frame includes one of a positioning protrusion and a positioning recess, and the second positioning frame includes another one of the positioning protrusion and the positioning recess.

20. The air handling unit of claim 19, wherein the positioning protrusion is provided with a first matching surface, the positioning recess is provided with a second matching surface configured to abut against the first matching surface, and the first matching surface and the second matching surface are inclined surfaces or arc surfaces that match each other.

21. The air handling unit of claim 18, wherein:

the heat exchange cabinet includes an enclosure plate, the enclosure plate including a sheet metal member and extending along a circumferential direction of the heat exchange cabinet; and
the two first positioning frames each include a plastic member and are connected to two ends of the enclosure plate, respectively.

22. The air handling unit of claim 21, wherein:

the enclosure plate includes, at each end of the two ends of the enclosure plate: a positioning member arranged around a part of an outer peripheral wall of the first positioning frame at the end; and an installation member extending towards a center of the heat exchange cabinet; and
each of the two first positioning frames is fixedly connected to the corresponding installation member.

23. The air handling unit of claim 22, wherein the outer peripheral wall of the first positioning frame is provided with a positioning groove, and the corresponding positioning member is disposed in the positioning groove.

24. The air handling unit of claim 18, wherein:

one of the first connection mechanism and the second connection mechanism includes a snap seat including a first snap part; and
another one of the first connection mechanism and the second connection mechanisms includes: a base including a first connection part; a snap cover including: a second connection part disposed at one end of the snap cover and hinged with the first connection part, so that another end of the snap cover is capable of rotating to be close to or far away from the base; and a third connection part separated from the second connection part; and a closing cover, including a fourth connection part at one end of the closing cover and hinged with the third connection part, another end of the closing cover including a second snap part configured to be snapped with the first snap part.

25. The air handling unit of claim 24, wherein:

the first connection mechanism includes the snap seat;
the second connection mechanism further includes a fixation bolt and a torsion spring;
the first connection part and the second connection part are connected to each other by the fixation bolt; and
the torsion spring is sleeved on the fixation bolt, a first torsion arm of the torsion spring abuts against the base, and a second torsion arm of the torsion spring abuts against the snap cover to apply an elastic force to the snap cover to rotate the snap cover towards the base.

26. The air handling unit of claim 25, wherein:

the first connection part includes two lugs separated from each other and each being provided with a first through hole;
the snap cover includes a front panel and two side panels arranged at two sides of the front panel, respectively;
the second connection part includes two second through holes each arranged on a respective one of the two side panels; and
the fixation bolt penetrates through the first through hole and the second through hole.

27. The air handling unit of claim 26, wherein:

the front panel includes two avoidance grooves at the two sides of the front panel, respectively, and configured to avoid the two lugs, respectively; and
the two lugs are disposed between the two side panels.

28. The air handling unit of claim 24, wherein:

the first connection mechanism includes the snap seat;
the base includes a first lock member; and
the second connection mechanism further includes a lock mechanism including a second lock member, a connection member, and a grip, the second lock member is located on a side of the snap cover facing the base, one end of the connection member is connected with the second lock member, another end of the connection member penetrates through the snap cover and is connected with the grip, and the grip is configured to drive the second lock member to be locked or unlocked with the first lock member.

29. The air handling unit of claim 28, wherein:

the connection member includes a rotation shaft, two ends of the rotation shaft are connected to the second lock member and the grip, respectively;
the first connection part and the first lock member are disposed at upper and lower ends of the base, respectively; and
the second lock member and the grip are both of a long strip structure and have a same length direction.

30. The air handling unit of claim 18, wherein one of the first connection mechanism and the second connection mechanism comprises a connection arm, another one of the first connection mechanism and the second connection mechanism includes a fitting hole, and the connection arm extends towards the fitting hole and is connected to the fitting hole by a fastener.

31. The air handling unit of claim 17, further comprising:

a filter screen plate removably connected to the first positioning frame adjacent to an air intake side of the heat exchange cabinet.

32. The air handling unit of claim 31, wherein the first positioning frame is provided with a plurality of magnets along a circumferential direction, and the filter screen plate is connected to the plurality of magnets.

Patent History
Publication number: 20250093052
Type: Application
Filed: Sep 7, 2022
Publication Date: Mar 20, 2025
Inventors: Xingchen WANG (Foshan), Yu LIU (Foshan)
Application Number: 18/726,948
Classifications
International Classification: F24F 3/044 (20060101); F24F 13/20 (20060101); F24F 13/28 (20060101);