Abstract: There are included a first heat exchanger (42) for causing heat to be exchanged between refrigerant and air in an interior of a vehicle (1), a heating circuit (36) for causing the refrigerant with a temperature higher than that of the air in the interior of the vehicle to circulate through the first heat exchanger, a secondary battery (21) where charging and discharging of power are performed, a cooling water circuit (50) for causing cooling water that exchanges heat with the secondary battery to circulate, a second heat exchanger (61) for causing heat to be exchanged between the refrigerant and the cooling water, the second heat exchanger being provided in a manner including a portion of the heating circuit downstream of the first heat exchanger and a portion of the cooling water circuit, and a case (23) for covering the secondary battery, the cooling water circuit, and the second heat exchanger.

Abstract: There are included a first heat exchanger (42) for causing heat to be exchanged between refrigerant and air in an interior of a vehicle (1), a heating circuit (36) for causing the refrigerant with a temperature higher than that of the air in the interior of the vehicle to circulate through the first heat exchanger, a secondary battery (21) where charging and discharging of power are performed, a cooling water circuit (50) for causing cooling water that exchanges heat with the secondary battery to circulate, a second heat exchanger (61) for causing heat to be exchanged between the refrigerant and the cooling water, the second heat exchanger being provided in a manner including a portion of the heating circuit downstream of the first heat exchanger and a portion of the cooling water circuit, and a case (23) for covering the secondary battery, the cooling water circuit, and the second heat exchanger.

Abstract: Problem to be Solved To provide a heat exchanger that can increase the performance by setting an optimal number of tube groups in a configuration where each of the tube groups is provided with headers. Solution The number of arrays of tube groups of a core section 2 is set to three rows. The number N of heating medium flow holes 21 per tube is set for each width dimension Tw of tubes 20, and the tubes 20 are formed such that the width dimension Tw of the tubes and a flow channel cross-sectional area S satisfy a relationship of S1?S?S2. Therefore, the number of arrays of the tube groups in the core section 2 can be set to an optimal number of arrays for improving the endothermic capacity and reducing the weight, and sufficient refrigerant flow rate and pressure resistance can be secured. As a result, even when there is a restriction on the size of the entire heat exchanger, a light high-performance heat exchanger can be configured.

Abstract: Problem to be Solved To provide a heat exchanger that can increase the performance by setting an optimal number of tube groups in a configuration where each of the tube groups is provided with headers. Solution The number of arrays of tube groups of a core section 2 is set to three rows. The number N of heating medium flow holes 21 per tube is set for each width dimension Tw of tubes 20, and the tubes 20 are formed such that the width dimension Tw of the tubes and a flow channel cross-sectional area S satisfy a relationship of S1?S?S2. Therefore, the number of arrays of the tube groups in the core section 2 can be set to an optimal number of arrays for improving the endothermic capacity and reducing the weight, and sufficient refrigerant flow rate and pressure resistance can be secured. As a result, even when there is a restriction on the size of the entire heat exchanger, a light high-performance heat exchanger can be configured.

Abstract: Cooling performance is secured by reducing a compression loss when a high-pressure gas refrigerant is allowed to flow without heat exchange on cooling in a vehicle interior heat exchanger. In the vehicle interior heat exchanger, an upstream header and a downstream header are communicated and connected with the same end side of the refrigerant circulation tubes of an upstream tube group and a downstream tube group where the refrigerant circulation tubes are stacked. Internal spaces of the upstream header and the downstream header are communicated and connected with each other via communication holes in the boss portions of the connecting member. In the vehicle interior heat exchanger, the total opening area of the communication holes is set such that the percentage thereof, with respect to the total opening area of the channel on the uppermost stream side of the upstream tube group, is in the range of 38% to 93%.

Abstract: In a heat exchanger of a heat pump system having a main core portion, a subcool core portion, and a receiver tank, the main core portion and the subcool core portion are constituted by a pair of header tanks arranged apart from each other in a vertical direction, a plurality of tubes arranged so as to extend in the vertical direction between the header tanks and having the pair of header tanks communicate with each other, and fins arranged between the adjacent tubes, and a first channel having a refrigerant pass through the main core portion, the receiver tank, and the subcool core portion in order and a second channel having the refrigerant pass only through the main core portion in a direction opposite to that of the first channel are provided.

Abstract: A heat exchanger includes a main core portion (6) for conducting heat exchange between an air and a refrigerant, a receiver tank (8) into which the refrigerant having passed through the main core portion flows, and a subcool core portion (10) for supercooling and liquefying a gas-liquid mixed refrigerant having passed through the receiver tank by heat exchange with the air, wherein the subcool core portion is composed of a plurality of tubes (22) arranged along a crosswise direction between left and right header tanks (20) arranged along the crosswise direction, respectively, in a state in parallel with each other and communicating with both the left and right header tanks; and fins (24) arranged between the adjacent tubes.

Abstract: A heat exchanger includes a single refrigerant pipe (44) for introducing a refrigerant into a receiver tank (14) from a condenser header part (20, 26), and a mounting member (40) for mounting the receiver tank to a core (10). The mounting member has a refrigerant inlet passage (56) connecting the refrigerant pipe to the interior of the receiver tank, and a refrigerant outlet passage (58) connecting the interior of the receiver tank to a sub-cooler header part (22, 28).

Abstract: Cooling performance is secured by reducing a compression loss when a high-pressure gas refrigerant is allowed to flow without heat exchange on cooling in a vehicle interior heat exchanger. In the vehicle interior heat exchanger, an upstream header and a downstream header are communicated and connected with the same end side of the refrigerant circulation tubes of an upstream tube group and a downstream tube group where the refrigerant circulation tubes are stacked. Internal spaces of the upstream header and the downstream header are communicated and connected with each other via communication holes in the boss portions of the connecting member. In the vehicle interior heat exchanger, the total opening area of the communication holes is set such that the percentage thereof, with respect to the total opening area of the channel on the uppermost stream side of the upstream tube group, is in the range of 38% to 93%.

Abstract: An interior condenser (1, 32) which is accommodated in an HVAC unit of a vehicle air-condoning heat pump system, the interior condenser including: a heat exchange core (6) that is composed of stacked tubes (2) and fins (4); a refrigerant inflow/outflow-side tank (10, 34) to which one end portions of the tubes are connected; a refrigerant turn-side tank (12) to which the other end portions of the tubes are connected; a partition wall (14) that separates an inner portion of the refrigerant inflow/outflow-side tank into a refrigerant inflow chamber (16) and a refrigerant outflow chamber (18); a refrigerant inlet tube (28) that is connected to the refrigerant inflow/outflow-side tank to communicate with the refrigerant inflow chamber; and a refrigerant outlet tube (30) that is connected to the refrigerant inflow/outflow-side tank to communicate with the refrigerant outflow chamber, wherein the refrigerant outlet tube is connected to the refrigerant inflow/outflow-side tank at a position below the core.

Abstract: A heat exchanger includes a plurality of heat exchanger units, each of which including header pipes (4,6) disposed in parallel to each other, a plurality of tubes (8) communicating with the header pipes and being disposed between the header pipes, fins (10) disposed between adjacent tubes, wherein a core portion (12) of the heat exchanger unit (2) is configured with the tubes and the fins layered therebetween; wherein the plurality of heat exchanger units are disposed in a direction that the tubes and the fins are arranged; and wherein the heat exchanger includes: fitting portions (16,18) which connect respective end portions (4a, 6a) of the header pipes of the heat exchanger units that are adjacent to each other, and side plates (20,22,40,42,46,48) which connect opposing end portions (12a) of respective core portions of the heat exchanger units that are adjacent to each other.

Abstract: A heat exchanger includes a main core portion (6) for conducting heat exchange between an air and a refrigerant, a receiver tank (8) into which the refrigerant having passed through the main core portion flows, and a subcool core portion (10) for supercooling and liquefying a gas-liquid mixed refrigerant having passed through the receiver tank by heat exchange with the air, wherein the subcool core portion is composed of a plurality of tubes (22) arranged along a crosswise direction between left and right header tanks (20) arranged along the crosswise direction, respectively, in a state in parallel with each other and communicating with both the left and right header tanks; and fins (24) arranged between the adjacent tubes.

Abstract: A heat exchanger includes a single refrigerant pipe (44) for introducing a refrigerant into a receiver tank (14) from a condenser header part (20, 26), and a mounting member (40) for mounting the receiver tank to a core (10). The mounting member has a refrigerant inlet passage (56) connecting the refrigerant pipe to the interior of the receiver tank, and a refrigerant outlet passage (58) connecting the interior of the receiver tank to a sub-cooler header part (22, 28).

Abstract: Provided is a heat exchanger in which drainage performance of a tube and a fin is improved while preventing reduction in heat exchange efficiency. The heat exchanger includes: a tube having flat surfaces opposed to each other at a predetermined interval; and a fin including a bent portion and a flat portion which are alternately formed in a longitudinal direction, the bent portion being joined to the opposing flat surfaces of the tube. The fin has a predetermined lateral range (bent portion) in the bent portion which is brought into contact with one of the opposing flat surfaces, the predetermined lateral range being bent toward another of the opposing flat surfaces and joined to the another of the opposing flat surfaces, thereby forming a communication path.

Abstract: Provided is a tube for a heat exchanger in which drainage performance of the tube and the fin is improved while preventing the brazing failure. That is, provided is a tube (110) for a heat exchanger, the tube through which a refrigerant flows being formed into a flat plate shape, the tube including stepped portions (117 and 118) at both end portions (110a and 110b) in a refrigerant flowing direction, respectively, in which the tube has a widthwise length in a region on an end portion (110a or 110b) side with respect to a position of each of the stepped portions (117 and 118), the widthwise length being smaller than a widthwise length in a region between both the stepped portions (117 and 118), and in which the tube further includes a drainage portion (119) at a predetermined position between both the stepped portions (117 and 118) along the refrigerant flowing direction.

Abstract: The thermal efficiency of a heat exchanger which is disposed on a blowing path in a vehicle interior and operates as a condenser is enhanced.

Abstract: The present invention relates to a heat exchanger capable of maintaining adhesion between fins and a heat exchange tube while achieving corrosion protection of the heat exchange tube, and a method for producing the heat exchanger. In the heat exchanger which includes a heat exchange tube 4 and a plate-like fin 5 having a through-hole 5a through which the heat exchange tube 4 passes, the plate-like fin 5 has a three-layer structure including a core material layer 52 formed of an Al—Mn based alloy, a brazing material layer 51 that constitutes one end surface and is formed of an Al—Si based alloy, and a sacrificial corrosion layer 53 that constitutes the other end surface and is formed of an Al—Zn—Mg based alloy, and has a tubular portion 5b which is raised from a periphery of the through-hole 5a and uses the brazing material layer 51 as an inner peripheral surface.

Abstract: Assembly of a header tank 1 and flat tubes 3A in a heat exchanger is simplified. A communication portion of the header tank 1 side which communicates with the flat tube 3A is a slit 11 formed over a region (a side surface 1b, or a connection portion between a facing surface 1a and the side surface 1b) that retreats from a center portion side in a width direction of the facing surface 1a, from the facing surface 1a on one end portion side in the width direction. An end portion of the flat tube 3A is able to be inserted from the side surface side of the header tank 1 into the slit 11 of the header tank 1. The flat tube 3A is caused to abut, in the width direction thereof, on a first abutting portion a of an end portion on the facing surface 1a side of the slit 11, and abut, in the longitudinal direction, on a second abutting portion b of an end portion on the side surface 1b side of the slit 11.

Abstract: A heat exchanger including a pair of header pipes and a plurality of heat transfer tubes extending between and placing the header pipes in communication and extending in parallel to each other to form a parallel-flow type heat exchanger core. The heat exchanger core is bent, so that relative to a center portion of the core, at least one header pipe is offset in the direction of air flow across the heat exchanger. The offset disposition of a larger header pipe may be achieved without increasing a tube insertion length into the header pipe or the reduction or elimination of liquid storing and moisture reducing unit contained in the header pipe. Consequently, heat exchangers achieving enhanced performance may be realized at a lower cost than known heat exchangers. Moreover, methods of producing such heat exchangers may achieve higher productivity.