Abstract: This heat exchanger is equipped with: a first heat exchange unit having a first inlet/outlet unit which has one inlet/outlet port and through which a coolant flows, and also having a plurality of first heat transfer pipes, each of which has one end thereof connected to the first inlet/outlet unit; a header pipe which is connected to the other ends of the plurality of first heat transfer pipes; and a second heat exchange unit having a second inlet/outlet unit which has two or more inlet/outlet ports and through which a coolant flows, and also having a plurality of second heat transfer pipes, each of which has one end thereof connected to the header pipe and the other end thereof connected to the second inlet/outlet unit. The coolant flows from the first heat exchange unit side toward the second heat exchange unit side during heating and flows from the second heat exchange unit side toward the first heat exchange unit side during cooling.

Abstract: This air conditioning device for a vehicle comprises: a refrigeration cycle having a compressor, a condenser, an expansion valve, and an evaporator through which refrigerant sequentially flows; a high-temperature heat medium circuit in which a high-temperature heat medium that has been heat-exchanged with the refrigerant in the condenser circulates; a low-temperature heat medium circuit in which a low-temperature heat medium that has been heat-exchanged with the refrigerant in the evaporator circulates; a connection line for connecting the high-temperature heat medium circuit and the low-temperature heat medium circuit; a plurality of heat exchangers outside the vehicle that allow introduction of the heat medium; and a switching unit capable of switching modes for each of the plurality of heat exchangers outside the vehicle, among a mode for connecting to the high-temperature heat medium circuit, a mode for connecting to the low-temperature heat medium circuit, and a mode for not connecting to either of the h

Abstract: An air conditioning device for a vehicle (1) includes: a housing (2) having an opening (2M); a blower (4) having a fan (9) accommodated within the housing and rotating about a rotation axis parallel to a first axis; a filter section (5) which is disposed between a gas inlet (7) and the opening and through which gas taken in from the gas inlet and flowing into the opening passes; and a support member (6) disposed between the blower and the filter section so as to be located at least partially at the opening, and supporting the filter section. The support member has a rib portion (61) extending in a longitudinal direction in a predetermined plane orthogonal to the first axis, and a sticking-out portion (62) sticking out from the rib portion in a transverse direction in the predetermined plane orthogonal to the longitudinal direction.

Abstract: The present invention is provided with: an evaporator (6) in which a compressed refrigerant is vaporized; an expansion valve expanding the refrigerant before the refrigerant flows into the evaporator (6); refrigerant pipes (26, 27) that connect the evaporator (6) and the expansion valve to each other; and a unit case (3) housing the evaporator (6), the expansion valve, and the refrigerant pipes (26, 27), and including an air flow channel (4) for passing air through the evaporator (6). A refrigerant pipe housing chamber (31) is disposed in the unit case (3), and housing the refrigerant pipes (26, 27). The refrigerant pipe housing chamber (31) is partitioned while being isolated from the housing section for the evaporator (6) and the air flow channel (4). The outer circumferential surfaces of the refrigerant pipes (26, 27) are separated from the inner wall surface of the refrigerant pipe housing chamber (31).

Abstract: A heat exchanger and a heat pump system capable of reducing the amount of a refrigerant that accumulates in an outdoor heat exchanger during heating operation, and of decreasing the appropriate amount of refrigerant during heating operation. A vehicle-external heat exchanger is provided with a hollow first header, a hollow second header provided facing the first header, and a plurality of tubes provided between and communicating with the first header and the second header. The first header is provided with a partition plate that divides the interior of the first header. A first opening formed on a partition plate side between the upper end of the first header and the partition plate. When functioning as an evaporator, the refrigerant is supplied from the lower part of the first header or of the second header, and the first opening serves an outflow port for the refrigerant.

Abstract: An air conditioning device for a vehicle (1) includes: a housing (2) having an opening (2M); a blower (4) having a fan (9) accommodated within the housing and rotating about a rotation axis parallel to a first axis; a filter section (5) which is disposed between a gas inlet (7) and the opening and through which gas taken in from the gas inlet and flowing into the opening passes; and a support member (6) disposed between the blower and the filter section so as to be located at least partially at the opening, and supporting the filter section. The support member has a rib portion (61) extending in a longitudinal direction in a predetermined plane orthogonal to the first axis, and a sticking-out portion (62) sticking out from the rib portion in a transverse direction in the predetermined plane orthogonal to the longitudinal direction.

Abstract: An objective of the present invention is to provide a heat exchanger and a heat pump system which are capable of reducing the amount of a refrigerant that accumulates in an outdoor heat exchanger during heating operation, and of decreasing the appropriate amount of the refrigerant during heating operation. A vehicle-external heat exchanger is provided with a hollow first header, a hollow second header provided facing the first header, and a plurality of tubes provided between the first header and the second header and communicating with the first header and the second header. The first header is provided with a partition plate that divides the interior of the first header. The first header is provided with a first opening formed on a partition plate side between the upper end of the first header and the partition plate.

Abstract: The present invention is provided with: an evaporator (6) in which a compressed refrigerant is vaporized; an expansion valve expanding the refrigerant before the refrigerant flows into the evaporator (6); refrigerant pipes (26, 27) that connect the evaporator (6) and the expansion valve to each other; and a unit case (3) housing the evaporator (6), the expansion valve, and the refrigerant pipes (26, 27), and including an air flow channel (4) for passing air through the evaporator (6). A refrigerant pipe housing chamber (31) is disposed in the unit case (3), and housing the refrigerant pipes (26, 27). The refrigerant pipe housing chamber (31) is partitioned while being isolated from the housing section for the evaporator (6) and the air flow channel (4). The outer circumferential surfaces of the refrigerant pipes (26, 27) are separated from the inner wall surface of the refrigerant pipe housing chamber (31).

Abstract: A heat-exchanger offset fin is a heat-exchanger offset fin which is disposed among a plurality of refrigerant tubes arranged in parallel. A plurality of segments, each of which is an individual fin cut and lifted into strips from the rising surfaces and falling surfaces of the fin which is folded and formed into wave shapes, are disposed it an offset manner with intervals therebetween of at least two rows in the airflow direction. The length of each segment in airflow direction satisfies 0.5 mm ?L?1.2 mm. The number of divisions of each segment within a single pitch of the wave-shape fin is three or greater.

Abstract: Provided are a flat heat exchange tube, a heat carrier-heating device, and an air conditioner for a vehicle by which it is possible to reduce thermal contact resistance and improve thermal conductivity. A flat heat exchange tube is provided with: a flat tube constituted of a pair of molded plates; and wavy inner fins that are inserted between the molded plates, tips protruding in one direction and tips protruding in another direction of the wavy inner fins being soldered to the inner surfaces of the pair of molded plates. The wavy inner fins are provided with expansion allowance portions in a wall surface between the tips allowing deformation in a direction by which the distance between the tips increases, the flat heat exchange tube being expandable through the expansion allowance portion in a state in which the tips between the pair of molded plates are soldered thereto.

Abstract: A heat exchanger includes a communication flow path 31 which communicates a first lower tank provided in a plurality of laminated flat tubes with a second lower tank provided adjacent to the first lower tank, the communication flow path 31 includes a throttle portion 34 formed in the center in a width direction, the throttle portion 34 has a curved surface formed in a protruded shape inside the communication flow path 31 with a predetermined radius of curvature R, when the length, in which an outer dimension in a height direction is the maximum, of the communication flow path 31 is set to be H, and the length, in which an outer dimension in the width direction is the maximum, of the communication flow path 31 is set to be W, the radius of curvature R of the throttle portion 34 is R?0.2 H.

Abstract: Provided is a heat exchanger whose air pressure loss is small and whose exchanged heat is large. The heat exchanger includes flat tubes, each having therein a plurality of refrigerant circulation holes, and fins fixed to the flat surfaces of the flat tubes, wherein the flat tubes and the fins are alternately stacked to form the heat exchanger.

Abstract: There is provided a heat exchanger 10 in which each of header tanks 20A and 20B is configured so that each of intermediate plates 60 and 90 is held between a header plate 40 and a tank plate 50. The intermediate plate 60, 90 functions as a reinforcing member, so that the strength of the header tank 20A, 20B is improved. The intermediate plate 60, 90 serving as a reinforcing element comprises bent parts 100 between the central portion and both the end portions in the width direction of the header tank 20A, 20B. By the elastic deformation of the bent parts 100, for example, the stresses developed in brazing of the header tank 20A, 20B, and the stresses at the time when a refrigerant pressure is applied can be prevented from concentrating in the joint portion of the header plate 40, the tank plate 50, and the intermediate plate 60, 90.

Abstract: A heat exchanger 10 includes a first block and a second block. The first block includes a first tank T1 having a refrigerant inlet through which the refrigerant flows in, a plurality of first tubes 21 into which the refrigerant having flowed into the first tank T1 is distributed and flows therein, and a second tank T2 in which the refrigerant flowing in the first tubes 21 merges. The second block includes a third tank T3 into which the refrigerant having merged in the second tank T2 flows therein, a plurality of second tubes 22 into which the refrigerant having flowed into the third tank T3 is distributed and flows, and a fourth tank T4 in which the refrigerant flowing in the second tube merges, and having a refrigerant outlet through which the merged refrigerant flows out. A refrigerant passage 43h through which the refrigerant flows from the second tank T2 into the third tank T3 is locally placed on the opposite side of the refrigerant inlet.

Abstract: At the refrigerant inlet/outlet side surface portion of laminated flat tubes, there is provided a first side refrigerant passage, and in the upper portion of the other side surface portion, there is provided a second side refrigerant passage, and in the lower portion thereof a third side refrigerant passage. A first partition portion is provided in first lower tank portions of the laminated flat tubes, and a second partition portion is provided in second upper tank portions. The first partition portion and the second partition portion respectively divide the laminated first lower tank portions and the second upper tank portions such that the ratio of the number of flat tubes on the refrigerant inlet/outlet side surface portion side, n4, to the number of flat tubes on the opposite side surface portion side, n3, is approximately 2:1.

Abstract: At the refrigerant inlet/outlet side surface portion of laminated flat tubes, there is provided a first side refrigerant passage, and in the upper portion of the other side surface portion, there is provided a second side refrigerant passage, and in the lower portion thereof a third side refrigerant passage. A first partition portion is provided in first lower tank portions of the laminated flat tubes, and a second partition portion is provided in second upper tank portions. The first partition portion and the second partition portion respectively divide the laminated first lower tank portions and the second upper tank portions such that the ratio of the number of flat tubes on the refrigerant inlet/outlet side surface portion side, n4, to the number of flat tubes on the opposite side surface portion side, n3, is approximately 2:1.

Abstract: A flat or a flared tubular end portion devoid of dimples is provided at the end of a tube 11 which is to be inserted into a header with the length, of the flat tubular portion being 1.5 mm or less along the direction of the length of the tube to prevent rapid reduction and enlargement of the cross-sectional area of the refrigerant path in the vicinity of the joint of the tube and the header, so as to reduce the pressure loss of the refrigerant which flows in and out from the header to the tube. A tube insertion stop is also provided consisting either, of a cut formed in the longitudinal edge of the flat end portion or a guard member which is formed aft of the flared, end portion so as to abut the header and seal off the tube insertion aperture of the header.

Abstract: A heat exchanger employing a dimple tube is disclosed, in which sufficient strength is provided by improving the processing accuracy of the dimple tube and decreasing the processing error. The tube comprises a plate folded in two so as to make two edges of the plate contact each other and form a flat tube. The plate comprises protrusions provided on each inner wall of the flat tube in a manner such that the heads of opposed protrusions on both the inner walls contact each other. The plate is clad with a brazing filler metal and the protrusions are formed on a surface of the plate before the plate is folded, and the two edges of the plate and the heads of the opposed protrusions are respectively brazed after the plate is folded. A predetermined number of sets of the opposed protrusions, positioned closest to the end of the tube, are larger than the other protrusions in a manner such that their size along the longitudinal direction of the tube is larger.

Abstract: The present invention relates to a heat exchanger in which a plate-shaped cooling medium flow portion (11) provides an internal cooling medium flow path inside by laminating two flat plates (13, 14) subjected to drawing and a cooling fin are alternately laminated, a cooling medium inlet (15) for allowing a cooling medium to flow into the cooling medium flow path and a cooling medium outlet (16) for allowing the cooling medium passing through the cooling medium flow path to flow out are formed in said two flat plates, and the cooling medium flowing from the cooling medium inlet to the cooling medium flow path is passed through said cooling medium flow path and is then allowed to flow out of the cooling medium outlet.

Abstract: A heat exchanger is constructed by tubes, corrugated fins and head pipes, which are assembled together. Herein, the tube is constructed by bending a flat plate whose surfaces are clad with brazing material to form a first wall and a second wall, which are arranged opposite to each other with a prescribed interval of distance therebetween to provide a refrigerant passage. Before bending, a number of swelling portions are formed to swell from an interior surface of the flat plate by press. By bending, the swelling portions are correspondingly paired in elevation between the first and second walls, so their top portions are brought into contact with each other to form columns each having a prescribed sectional shape corresponding to an elliptical shape or an elongated circular shape each defined by a short length and a long length.