JP2006284160A - Header tank for heat exchanger, and heat exchanger using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a header tank for a heat exchanger capable of arbitrarily selecting the cross-sectional shape in accordance with an installation space of the heat exchanger, and readily changing the cross-sectional shape and area of a refrigerant channel. <P>SOLUTION: This header tank 2, 3 is composed of tank formation members 7A, 7B, 7C, a tube-connecting plate 8 joined to outer surfaces of the tank formation members 7A, 7B, 7C, and partition members 9A, 9B, 9C disposed within and joined to the tank formation members 7A, 7B, 7C and adapted to divide the interior of the tank formation members 7A, 7B, 7C into a plurality of refrigerant channels 22 extending in the longitudinal direction. Tube insertion holes 13, 21 are respectively formed on peripheral walls of the tank formation members 7A, 7B, 7C and the tube-connecting plate 8 at mutually aligned positions. Tube-end fit cutouts 23 for receiving a part of corresponding end portions of heat exchange tubes 4 are formed on the partition members 9A, 9B, 9C in a state of aligning with the corresponding tube insertion holes 13, 21. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a header tank for a heat exchanger and a heat exchanger using the same, and more specifically, is suitably used for a gas cooler or an evaporator of a supercritical refrigeration cycle in which a supercritical refrigerant such as CO ₂ (carbon dioxide) is used. The present invention relates to a heat exchanger header tank and a heat exchanger using the same.

  In this specification and claims, the downstream side of the heat exchanger in the ventilation direction (the direction indicated by the arrow X in FIGS. 1 and 13) is the front, and the opposite side is the rear. In this specification and claims, the term “aluminum” includes aluminum alloys in addition to pure aluminum.

  As a heat exchanger used in a supercritical refrigeration cycle, a pair of header tanks spaced apart from each other and a parallel arrangement with a gap between both header tanks and both ends connected to both header tanks And a fin disposed in a ventilation gap between adjacent heat exchange tubes and brazed to the heat exchange tube, the header tank having a recess on the outer peripheral surface and the bottom of the recess A cylindrical tank forming member made of extruded shape material in which a plurality of tube insertion holes are formed at intervals in the length direction, and a plurality of tube insertion holes are formed in a penetrating manner at intervals in the length direction; There is known a pipe connecting plate having a sub-arc cross-sectional shape disposed in a recess of a tank forming member and joined to the tank forming member (see Patent Document 1, FIG. 6 and FIG. 7).

  In order to improve pressure resistance, the header tank of the heat exchanger described in Patent Document 1 includes a cylindrical tank forming member having a refrigerant channel having a circular cross section. However, according to this header tank, there is a problem that the outer shape of the cross section of the header tank cannot be made into an appropriate shape according to the space in which the heat exchanger is installed.

Further, in the heat exchanger described in Patent Document 1, the cross-sectional shape and the cross-sectional area of the refrigerant flow path in the header tank are suitable for improving the heat exchange performance required for various heat exchangers. In order to achieve this, it is necessary to extrude a plurality of types of tank forming members having different inner diameters, which increases the cost.
JP 2001-133189 A

  The object of the present invention is to solve the above-mentioned problems, and to arbitrarily select the outer shape of the cross section according to the installation space of the heat exchanger, and to easily change the cross section shape and the flow area of the refrigerant flow path Another object of the present invention is to provide a header tank for a heat exchanger that can be used, and a heat exchanger using the same.

  In order to achieve the above object, the present invention comprises the following aspects.

  1) A hollow tank forming member, and a partition member that is disposed in the tank forming member and joined to the tank forming member, and that partitions the inside of the tank forming member into a plurality of front and rear refrigerant channels extending in the length direction thereof. Header tank for heat exchanger.

  2) A plurality of tube insertion holes are formed in the tank forming member, and a plurality of tube end fitting notches into which a part of the end of the heat exchange tube is fitted are formed in the partition member so as to match the tube insertion holes. The header tank for a heat exchanger as described in 1) above.

  3) The header tank for a heat exchanger as described in 1) or 2) above, wherein the tank forming member is formed by pressing a hollow extruded shape member made of aluminum.

  4) The partition member is formed by pressing an aluminum brazing sheet having a brazing filler metal layer on both sides, and the partition member is brazed to the tank forming member using the brazing filler metal layer. The header tank for a heat exchanger according to any one of 1) to 3).

  5) A pipe connecting plate joined to the outer surface of the tank forming member is provided, and the pipe connecting plate has a plurality of pipe insertion holes formed so as to match the pipe insertion holes of the tank forming member. The header tank for a heat exchanger according to any one of 1) to 4).

  6) The pipe connecting plate is formed by pressing an aluminum brazing sheet having a brazing filler metal layer on both sides, and the pipe connecting plate is brazed to the tank forming member using the brazing filler metal layer. The header tank for a heat exchanger as described in 5) above.

  7) The heat exchange according to any one of the above 1) to 6), wherein the partition member is in the form of a strip and is arranged so that the width direction faces the height direction of the hollow portion of the tank forming member A dexterous header tank.

  8) The partition member has a substantially U-shaped cross section, the width direction of the pair of opposing walls facing each other faces the height direction of the hollow portion of the tank forming member, and the tip of the opposing wall faces the tube insertion hole side. The header tank for a heat exchanger according to any one of 1) to 6), which is disposed so as to face.

  9) The partition member has a corrugated plate shape composed of a plurality of flat portions parallel to each other and a connecting portion that connects adjacent flat portions, and the width direction of the flat portion is in the height direction of the hollow portion of the tank forming member. The header tank for a heat exchanger according to any one of 1) to 6), which is disposed so as to face.

  10) In the tank forming member, a plurality of groups of hole insertion holes formed at intervals in the length direction are provided at intervals in the front-rear direction, and are parallel to each other in the tank forming member. The partition member, which is a corrugated plate composed of a connecting portion that connects adjacent flat portions and adjacent flat portions, has a width direction of the flat portion facing a height direction of the hollow portion of the tank forming member, and at least one flat portion is The tank forming member is disposed so as to be positioned between the pipe insertion holes adjacent in the front-rear direction, and the partition member has a plurality of pipe end insertion notches into which a part of the end of the heat exchange pipe is fitted, Any one of the above 1) to 6) in which the notch for fitting the tube end portion is not formed in the flat portion that is formed so as to match and located between the tube insertion holes adjacent in the front-rear direction of the partition member The header tank for a heat exchanger as described.

11) Heat exchange provided with a pair of header tanks arranged at a distance from each other and a plurality of heat exchange pipes arranged in parallel between both header tanks and having both ends connected to both header tanks. A vessel,
Each header tank is a hollow tank forming member, and a partition member that is disposed in the tank forming member, joined to the tank forming member, and that partitions the inside of the tank forming member into a plurality of front and rear refrigerant channels extending in the length direction thereof. Equipped with a heat exchanger.

  12) A plurality of tube insertion holes are formed in the tank forming member, and a plurality of tube end insertion notches into which a part of the end of the heat exchange tube is fitted are formed in the partition member so as to match the tube insertion holes. The end of the heat exchange pipe is inserted into the pipe insertion hole of the tank forming member and is connected to both header tanks in a state of being fitted into the pipe end fitting notch of the partition member. Heat exchanger.

  13) The heat exchanger according to the above 11) or 12), wherein the tank forming member is formed by pressing an aluminum hollow extruded shape.

  14) The partition member is formed by pressing an aluminum brazing sheet having a brazing filler metal layer on both sides, and the partition member is brazed to the tank forming member using the brazing filler metal layer. The heat exchanger according to any one of 11) to 13).

15) It has a pipe connection plate joined to the outer surface of the tank forming member. A plurality of pipe insertion holes are formed in the pipe connection plate so as to match the pipe insertion holes of the tank forming member, and heat exchange is performed. The heat exchanger according to any one of the above 11) to 14), which is connected to both header tanks with the end of the tube inserted into the tube insertion hole of the tube connection plate
16) The pipe connecting plate is formed by pressing an aluminum brazing sheet having a brazing filler metal layer on both sides, and the pipe connecting plate is brazed to the tank forming member using the brazing filler metal layer. The heat exchanger according to 15) above, wherein the heat exchange pipe is brazed to the pipe connection plate using the brazing material layer of the pipe connection plate.

  17) The heat exchange according to any one of the above 11) to 16), wherein the partition member is in the form of a strip and is arranged so that the width direction faces the height direction of the hollow portion of the tank forming member vessel.

  18) The partition member has a substantially U-shaped cross section, the width direction of the pair of opposing walls facing each other faces the height direction of the hollow portion of the tank forming member, and the tip of the opposing wall faces the tube insertion hole side The heat exchanger according to any one of the above 11) to 16), which is disposed so as to face.

  19) The partition member has a corrugated shape composed of a plurality of flat portions parallel to each other and a connecting portion that connects adjacent flat portions, and the width direction of the flat portion is in the height direction of the hollow portion of the tank forming member. The heat exchanger according to any one of the above 11) to 16) arranged so as to face.

  20) The first header tank of the pair of header tanks includes a plurality of tank forming members arranged and fixed in the length direction. Similarly, the second header tank is a tank of the first header tank. A tank forming member disposed so as to straddle two adjacent tank forming members of the first header tank, the number being one less than the number of forming members, and within one tank forming member of the first header tank 11) to 19), wherein the refrigerant that has flowed into the tank passes through all the heat exchange tubes and the tank forming member of the second header tank and flows into the other one tank forming member of the first header tank. ).

  21) The number of tank forming members of the first header tank is two, and both tank forming members are joined via a partition plate so that the hollow portions do not communicate with each other. 20. The heat exchanger according to 20) above, wherein 1 is 1.

22) The first header tank of the pair of header tanks includes two tank forming members arranged and fixed in the length direction, and the second header tank is also the two tanks of the first header tank. One tank forming member arranged so as to straddle the forming member,
The tank forming members of both header tanks are provided with a plurality of rows of hole insertion holes formed at intervals in the longitudinal direction and spaced in the front-rear direction, and are formed in the tank forming members of both header tanks. The partition member, which is a corrugated plate formed by connecting portions that connect mutually parallel flat portions and adjacent flat portions, has at least one with the width direction of the flat portion facing the height direction of the hollow portion of the tank forming member. A plurality of tube end portions are fitted so that the flat portion is positioned between the pipe insertion holes adjacent to each other in the front-rear direction in the tank forming member and the pipe connection plate, and a part of the end portion of the heat exchange tube is fitted in the partition member. The notch is formed so as to match the tube insertion hole, and the end of the heat exchange tube is inserted into the tube insertion hole of the tank forming member and fitted into the tube end fitting notch of the partition member In both headers Is connected to the click, not formed with cutout which a tube end fitted in the flat portion located between tube insertion holes adjacent to each other in the longitudinal direction of the partition member,
The heat exchanger according to any one of the above 11) to 16), wherein a refrigerant passage hole is formed in each flat portion of the partition member disposed in one tank forming member of the first header tank.

  23) A refrigeration cycle comprising a compressor, a gas cooler, an evaporator, a decompressor, and an intermediate heat exchanger for exchanging heat between the refrigerant coming out of the gas cooler and the refrigerant coming out of the evaporator, and using a supercritical refrigerant. A supercritical refrigeration cycle in which the gas cooler comprises the heat exchanger according to any one of the above 11) to 21).

  24) A refrigeration cycle comprising a compressor, a gas cooler, an evaporator, a decompressor, an intermediate heat exchanger for exchanging heat between the refrigerant coming out of the gas cooler and the refrigerant coming out of the evaporator, and using a supercritical refrigerant. A supercritical refrigeration cycle in which the evaporator comprises the heat exchanger according to any one of 11) to 19) and 22) above.

  25) The supercritical refrigeration cycle according to the above 23) or 24), wherein the supercritical refrigerant is carbon dioxide.

  26) A vehicle on which the supercritical refrigeration cycle according to any one of the above 23) to 25) is mounted as a car air conditioner.

  According to the header tank for a heat exchanger of 1) above, there are a hollow tank forming member, a plurality of front and rear members arranged in the tank forming member, joined to the tank forming member, and extending in the length direction of the tank forming member. Since the partition member partitioning into the refrigerant flow path is provided, the pressure resistance of the header tank is improved by the function of the partition member. Therefore, the outer shape of the cross section of the header tank, that is, the outer shape of the cross section of the tank forming member can be made into an appropriate shape according to the space where the heat exchanger is installed. In addition, by changing the shape and cross-sectional area of the partition member, the cross-sectional shape and flow cross-sectional area of the refrigerant flow path in the header tank can be easily changed to achieve the heat exchange performance required for various heat exchangers. It can be made suitable for improvement. In addition, the cost is lower than when a plurality of types of tank forming members having different cross-sectional sizes are prepared.

  According to the header tank for a heat exchanger of 2) above, a plurality of tube insertion holes are formed in the tank forming member, and a plurality of tube end fitting notches into which a part of the end of the heat exchange tube is fitted in the partition member. Since it is formed so as to match the tube insertion hole, when assembling the heat exchanger using this header tank, the heat exchange tube can be relatively easily attached to the header tank using the tube insertion hole of the tank forming member. Can be connected to. Moreover, since the end of the heat exchange pipe is fitted into the notch for fitting the pipe end of the partition member, the length of projection of all the heat exchange pipe ends into the header tank, i.e., the tank forming member, can be easily obtained. Can be constant. Therefore, the protrusion length can be made suitable for the purpose of improving the performance of the heat exchanger.

  According to the header tank for heat exchanger of the above 3), since the tank forming member is formed by pressing a hollow extruded shape made of aluminum, a tank forming member having a plurality of tube insertion holes can be easily obtained. Can be formed. In addition, since the tank forming member is made of a hollow extruded shape, the cross-sectional shape and the cross-sectional area of the refrigerant flow path in the header tank can be easily changed by partially changing the wall thickness of the peripheral wall. The heat exchange performance required for various heat exchangers can be improved.

  According to the header tank for a heat exchanger of 4) above, the partition member is formed by pressing an aluminum brazing sheet having a brazing filler metal layer on both sides, so that the partition having a notch for fitting a pipe end portion The member can be easily formed. Moreover, since the partition member can be brazed to the inner surface of the tank forming member using the brazing material layer of the partition member, the brazing workability is improved.

  According to the header tank for a heat exchanger of the above 5), it is provided with a pipe connecting plate joined to the outer surface of the tank forming member, and the pipe connecting plate has a plurality of pipe insertion holes inserted into the tank forming member. Since it is formed so as to match the hole, when assembling the heat exchanger using this header tank, the heat exchange pipe is attached to the header tank using the tank insertion member and the pipe insertion hole of the pipe connection plate. It can be connected relatively easily.

  According to the header tank for a heat exchanger of 6) above, the pipe connecting plate is formed by pressing an aluminum brazing sheet having a brazing filler metal layer on both sides, so that a pipe having a plurality of pipe insertion holes The connecting plate can be easily formed. In addition, since the pipe connection plate and the tank forming member, and the pipe connection plate and the heat exchange pipe can be brazed using the brazing material layer of the pipe connection plate, the brazing workability is improved. .

  By appropriately combining the header tanks for heat exchanger of 10) above, the flow direction of the refrigerant in the heat exchanger can be set to be suitable for improving the heat exchange performance.

  According to the heat exchanger of 11), the same effect as that of the header tank of 1) is obtained.

  According to the heat exchanger of 12), the same effects as in the case of the header tank of 2) are obtained.

  According to the heat exchanger of 13), the same effects as in the case of the header tank of 3) are obtained.

  According to the heat exchanger of 14), the same effect as in the case of the header tank of 4) can be obtained.

  According to the heat exchanger of 15), the same effects as in the case of the header tank of 5) are obtained.

  According to the heat exchanger of 16), the same effect as that of the header tank of 6) can be obtained.

  According to the heat exchanger of 20) and 21) above, the refrigerant flow can be made suitable for improving the heat exchange performance, for example, heat exchange when used as a gas cooler of a supercritical refrigeration cycle. Performance is improved.

  According to the heat exchanger of the above 22), the flow of the refrigerant can be made suitable for improving the heat exchange performance. For example, the heat exchange performance when used as an evaporator of a supercritical refrigeration cycle is improved. To do.

  Embodiments of the present invention will be described below with reference to the drawings.

  In the following description, the top, bottom, left and right in FIGS. 1, 2, 13, and 14 are referred to as top and bottom and left and right, respectively.

Embodiment 1
This embodiment is shown in FIGS. 1 to 9, and the heat exchanger according to the present invention is applied to a gas cooler of a supercritical refrigeration cycle.

1 and 2, a gas cooler (1) of a supercritical refrigeration cycle using a supercritical refrigerant, for example, CO ₂ , has two header tanks (2) that are spaced apart in the left-right direction and extend in the up-down direction. (3) and a plurality of flat heat exchange pipes (4) arranged in parallel in the vertical direction between both header tanks (2) and (3), and adjacent heat exchange pipes (4) Between the corrugated fin between the upper and lower ends and the corrugated fin between the upper and lower ends (5) and the corrugated fin (5) between the upper and lower ends. And a side plate (6) made of an aluminum bare material, which is arranged on the outside and brazed to the corrugated fins (5). In this embodiment, the right header tank (2) is referred to as a first header tank, and the left header tank (3) is referred to as a second header tank.

  As shown in FIGS. 3 to 6, the first header tank (2) is divided into two upper and lower hollow tank forming members (7A) and (7B) extending in the vertical direction, and both tank forming members (7A) and (7B). It is disposed in the tank connecting members (7A) and (7B), and the tank connecting members (7A) and (7B) across the tank forming members (7A) and (7B). The partition member (9A) (9B) brazed to each tank forming member (7A) (7B), the upper end opening of the upper tank forming member (7A) and the lower end opening of the lower tank forming member (7B) are closed. And a cap (11) that is disposed between the upper and lower tank forming members (7A) and (7B) and joined to both tank forming members (7A) and (7B), and a lower end opening of the upper tank forming member (7A) and A partition plate (12) for closing the upper end opening of the lower tank forming member (7B).

  Each tank forming member (7A) (7B) is formed from an aluminum hollow extruded shape, and its cross-sectional shape is a rectangle that is long in the front-rear direction. A plurality of through-tube insertion holes (13) that are long in the front-rear direction are formed at intervals in the vertical direction on the side wall in the left-right direction, that is, the left side wall of each tank forming member (7A) (7B). An aluminum having a refrigerant inlet (14) formed in a laterally outer side wall, that is, a right side wall of the upper tank forming member (7A), and having a refrigerant inflow path (16) leading to the refrigerant inlet (14) on an outer surface of the right side wall. Here, the refrigerant inlet member (15) is joined by brazing. A refrigerant outlet (17) is formed on the right side wall of the lower tank forming member (7B), and an aluminum refrigerant outlet member (18) having a refrigerant outflow path (19) leading to the refrigerant outlet (17) on the outer surface of the right side wall. ) Is joined here by brazing. Each tank forming member (7A) (7B) is formed by pressing a hollow extruded profile made of aluminum to form a tube insertion hole (13) and a refrigerant inlet (14) or a refrigerant outlet (17). It has been. The upper end portion of the upper tank forming member (7A) and the lower end portion of the lower tank forming member (7B) project outward from the pipe connection plate (8), respectively.

  The pipe connection plate (8) is formed from an aluminum brazing sheet having a brazing material layer on both sides, and is brazed to both tank forming members (7A) and (7B) using the brazing material layer on one side. Yes. The pipe connection plate (8) has a plurality of through pipe insertion holes (21) that are long in the front-rear direction so that the pipe insertion holes (13) of both tank forming members (7A) and (7B) are aligned vertically. It is formed at intervals in the direction. Projecting walls (8a) projecting outward in the left-right direction are integrally formed on both front and rear edges of the pipe connection plate (8), and both projecting walls (8a) are formed on the pipe connection plate (8). The brazing material layer is used to braze the front and rear side walls of both tank forming members (7A) and (7B) across both tank forming members (7A) and (7B). The pipe connection plate (8) is made by pressing an aluminum brazing sheet to form a pipe insertion hole (21) and a protruding wall (8a).

  Each partition member (9A) (9B) is in the form of a strip formed from an aluminum brazing sheet having a brazing filler metal layer on both sides, and has a width at the center in the front-rear direction in each tank forming member (7A) (7B). It is arranged over the entire length of each tank forming member (7A) (7B) with the direction in the left-right direction (the height direction of the hollow part of the tank forming member (7A) (7B)) The tank forming members (7A) and (7B) are brazed to the inner surfaces of the left and right side walls. Then, both front and rear side portions of the partition members (9A) and (9B) in the tank forming members (7A) and (7B) are refrigerant passages (22) extending in the length direction. Note that the size of the refrigerant inlet (14) and the refrigerant outlet (17) of the tank forming members (7A) and (7B) are sized so as to straddle both refrigerant flow paths (22). A part of the end of the heat exchange pipe (4) on the edge of each partition member (9A) (9B) on the pipe insertion hole (13) side of the tank forming member (7A) (7B), here the left edge The pipe end insertion notches (23) into which the pipes fit are aligned with the tank insertion members (7A) (7B) and the pipe insertion holes (13) (21) of the pipe connection plate (8). It is formed at intervals in the direction. The partition members (9A) and (9B) are made by pressing an aluminum brazing sheet to form a notch (23) for fitting a pipe end.

  The cap (11) is formed from an aluminum brazing sheet having a brazing filler metal layer on at least one side, and the tank forming member (7A) (7B) is connected to the surface of the cap (11) where the brazing filler metal layer is present. A recess (24) is formed into which the protrusion from the plate (8) fits. In the cap (11), the protruding portion of the upper tank forming member (7A) and the protruding portion of the lower tank forming member (7B) are fitted in the recess (24), and the brazing material layer of the cap (11) is used. The two tank forming members (7A) and (7B) are brazed. The cap (11) is made by pressing the aluminum brazing sheet to form the recess (24).

  The partition plate (12) is formed from an aluminum brazing sheet having a brazing filler metal layer on both sides, and the lower tank forming member (7A) and the upper partition member (9A) The end surfaces and the upper end surfaces of the lower tank forming member (7B) and the lower partition member (9B) are brazed.

  As shown in FIGS. 7 and 8, the second header tank (3) has substantially the same configuration as the first header tank (2) and is reversed in the left-right direction. Both header tanks (2) (3 ) Are arranged so that the pipe connecting plates (8) face each other. In both header tanks (2) and (3), the same parts and the same parts are denoted by the same reference numerals. The difference between the second header tank (3) and the first header tank (2) is that it has a length over the entire length of the second header tank (3) instead of the two tank forming members (7A) (7B). The point having two tank forming members (7C), the point that one partition member (9C) is disposed in the tank forming member (7C) over the entire length, the refrigerant inlet (14) and the refrigerant in the tank forming member (7C) The outlet (17) is not formed, and the partition plate (12) is not provided.

  The heat exchange pipe (4) is made of an aluminum extruded shape, and has a wide and flat shape in the front-rear direction, and a plurality of refrigerant passages (4a) extending in the length direction are formed in parallel in the interior. Both ends of the heat exchange pipe (4) are respectively connected to the pipe insertion holes (21) of the pipe connection plates (8) of the header tanks (2) and (3) and the tank forming members (7A) (7B) (7C). The pipe connecting plate (8) is inserted into the pipe insertion hole (13) and the center in the front-rear direction is fitted in the notch (23) of the partition member (9A) (9B) (9C). ) Is used to braze the pipe connecting plate (8) and the tank forming members (7A), (7B) and (7C). Note that both end surfaces of the heat exchange pipe (4) are in contact with the bottoms of the notches (23) of the partition members (9A), (9B), and (9C).

  The corrugated fin (5) is formed in a wave shape using an aluminum brazing sheet having a brazing filler metal layer on both sides.

  The gas cooler (1) is manufactured by combining all the members and brazing them together.

  The gas cooler (1) constitutes a supercritical refrigeration cycle together with a compressor, an evaporator, a decompressor, and an intermediate heat exchanger that exchanges heat between the refrigerant that has come out of the gas cooler and the refrigerant that has come out of the evaporator. For example, it is installed in a car.

In the gas cooler (1) described above, as shown in FIG. 9, the CO ₂ that has passed through the compressor passes through the refrigerant inflow passage (16) of the refrigerant inlet member (15) from the refrigerant inlet (14) to the first header tank ( 2) All the heat exchange pipes (2) that enter into both refrigerant flow paths (22) of the upper tank forming member (7A) and pass through both refrigerant flow paths (22) into the upper tank forming member (7A) ( It flows into the refrigerant passage (4a) of 4). The CO ₂ flowing into the refrigerant passage (4a) flows leftward in the refrigerant passage (4a) and flows into the tank forming member (7C) of the second header tank (3). The CO ₂ flowing into the tank forming member (7C) flows downward through both refrigerant flow paths (22), and the refrigerant in all the heat exchange tubes (4) communicating with the lower tank forming member (7B). Both refrigerant flow paths (22) of the lower tank forming member (7B) of the first header tank (2) flow into the passage (4a) and flow to the right in the refrigerant path (4a) by changing the flow direction. Get inside. Thereafter, CO ₂ flows through both refrigerant channels (22) and flows out through the refrigerant outlet (17) and the refrigerant outlet channel (19) of the refrigerant outlet member (18). While the CO ₂ flows in the refrigerant passage (4a) of the heat exchange pipe (4), the ventilation gap is heat-exchanged with the air flowing in the direction indicated by the arrow X in FIGS. 1 and 9, and cooled.

  FIGS. 10-13 shows the modification of the partition member arrange | positioned in the tank formation member of a gas cooler.

  In the case of the modification shown in FIG. 10, in the tank forming members (7A), (7B), (7C), a plurality of partition members (9A), (9B), (9C) of the first embodiment are spaced apart in the front-rear direction. Here, two refrigerant passages (22) are formed in the tank forming members (7A), (7B), and (7C), one more than the number of partition members (9A), (9B), and (9C). Has been. FIG. 10 (a) shows the tank forming members (7A) and (7B) of the first header tank (2), and FIG. 10 (b) shows the tank forming members (7C) of the second header tank (3). . In this case, the sizes of the refrigerant inlet (14) and the refrigerant outlet (17) of the tank forming members (7A) and (7B) of the first header tank (2) are large enough to span all the refrigerant flow paths (22). It is assumed.

  In the case of the modification shown in FIG. 11, in the tank forming members (7A), (7B) and (7C), a partition member (30A) having a substantially U-shaped cross section formed from an aluminum brazing sheet having a brazing filler metal layer on both sides. (30B) and (30C) are opposed to each other while the width direction of the pair of opposed walls (30a) facing each other is directed to the height direction (left-right direction) of the hollow portion of the tank forming member (7A) (7B) (7C) The tank (30a) tip is placed so that it faces the tube insertion hole (13) side (inward in the left-right direction) of the tank forming member (7A), (7B), and (7C), and the tank forming member uses the brazing filler metal layers on both sides (7A) (7B) (7C) are brazed to the inner surfaces of the left and right side walls. 11 (a) shows the tank forming members (7A) and (7B) of the first header tank (2), and FIG. 11 (b) shows the tank forming members (7C) of the second header tank (3). . A tube end fitting notch (32) is formed at the tip of each opposing wall (30a) of the partition member (30A) (30B) (30C). The front and rear side portions of the partition members (30A), (30B), and (30C) in the tank forming members (7A), (7B), and (7C) and the portions between the opposing walls (30a) are the refrigerant flow path (22), respectively. It has become. The partition members (30A), (30B), and (30C) are made by pressing the aluminum brazing sheet into a U-shaped cross section and forming a tube end fitting notch (32). Yes.

  When the partition members (30A) and (30B) are arranged in the both tank forming members (7A) and (7B) of the first header tank of the first embodiment, both opposing walls (30a) in the partition members (30A and 30B) ) Through holes (34) for passage of refrigerant are formed at positions corresponding to the refrigerant inlet (14) and the refrigerant outlet (17) of the connecting wall (30b). Further, the sizes of the refrigerant inlet (14) and the refrigerant outlet (17) of the tank forming members (7A) and (7B) are sized so as to straddle all the refrigerant flow paths (22).

  In the case of the modification shown in FIG. 12, the tank forming members (7A), (7B), and (7C) are formed of aluminum brazing sheets having brazing filler metal layers on both sides and are parallel to each other, in this case, three flats. Waves composed of connecting portions (35b) that alternately connect the walls (35a) and adjacent flat walls (35a) in the height direction (left-right direction) of the hollow portions of the tank forming members (7A), (7B), (7C) The plate-shaped partition members (35A) (35B) (35C) are such that the width direction of the flat wall (35a) faces the height direction (left-right direction) of the hollow portion of the tank forming members (7A) (7B) (7C) The brazing material layers on both sides are brazed to the inner surfaces of the left and right side walls of the tank forming members (7A), (7B) and (7C). 12 (a) shows the tank forming members (7A) and (7B) of the first header tank (2), and FIG. 12 (b) shows the tank forming members (7C) of the second header tank (3). . Positioned on the front and rear sides of the connecting portion (35b) from the connecting portion (35b) on the pipe insertion hole (13) side of the tank forming member (7A) (7B) (7C) in the partition member (35A) (35B) (35C) A tube end fitting notch (36) is formed over the flat wall (35a). Further, a pipe end fitting notch (37) is formed at the edge of the other flat wall (35a) on the pipe insertion hole (13) side. The tank forming members (7A), (7B), and (7C) are divided into the refrigerant flow paths (22) by the front and rear sides of the partition members (35A), (35B), and (35C) and the portions between the adjacent flat walls (35a). It has become. The partition members (35A), (35B), and (35C) are formed by pressing the aluminum brazing sheet into a corrugated sheet shape and forming notches (36) and (37) for fitting the tube end portions. ing.

  When the partition members (35A) and (35B) are disposed in the tank forming members (7A) and (7B) of the first header tank of the first embodiment, the connection of the partition members (35A) and (35B) on the outer side in the left-right direction A through hole (38) for passage of a refrigerant is formed at a position matching the refrigerant inlet (14) and the refrigerant outlet (17) of the part (35b). Further, the sizes of the refrigerant inlet (14) and the refrigerant outlet (17) of the tank forming members (7A) and (7B) span all the refrigerant flow paths (22) of the partition members (35A) (35B) (35C). It is made such a size.

Embodiment 2
This embodiment is shown in FIGS. 13 to 20, and the heat exchanger according to the present invention is applied to an evaporator of a supercritical refrigeration cycle.

13 to 15, an evaporator (40) of a supercritical refrigeration cycle using a supercritical refrigerant, for example, CO ₂ , is provided with two header tanks (41) (41), which are spaced apart in the vertical direction and extend in the horizontal direction. 42) and a plurality of flat heat exchange tubes (43) arranged in parallel with a space in the left-right direction between both header tanks (41) (42), and adjacent heat exchange tubes (43). Between the left and right heat exchange pipes (43) and the corrugated fins (44) brazed to the heat exchange pipes (43) and the left and right ends of the corrugated fins (44) And an aluminum bear side plate (45) brazed to the corrugated fin (44). In this embodiment, the upper header tank (41) is referred to as a first header tank, and the lower header tank (42) is referred to as a second header tank.

  As shown in FIGS. 16 to 18, the first header tank (41) includes a hollow right tank forming member (46A) and a left tank forming member (46B) extending in the left-right direction, and both tank forming members (46A). (46B) straddling both tank forming members (46A) (46B) pipe connection plate (47) joined to the outer wall of the lower wall, and each tank forming member (46A) (46B) arranged in each tank Partition member (48A) (48B) brazed to forming member (46A) (46B), refrigerant inlet / outlet member (49) joined to the right end of right tank forming member (46A), left tank forming member ( 46B) is closed between the left end opening of the cap (51), both tank forming members (46A) (46B) and is joined to both tank forming members (46A) (46B), and the right tank forming member ( A partition plate (52) for closing the left end opening of 46A) and the right end opening of the left tank forming member (46B).

  Each tank forming member (46A) (46B) is formed from an aluminum hollow extruded shape, and its cross-sectional shape is a rectangle that is long in the front-rear direction. A plurality of penetrating pipe insertion holes (53) that are long in the front-rear direction are formed at intervals in the left-right direction on both front and rear side portions of the lower wall of each tank forming member (46A) (46B). The front-side tube insertion hole (53) and the rear-side tube insertion hole (53) are at the same position in the left-right direction. Each tank forming member (46A) (46B) is formed by pressing a hollow extruded profile made of aluminum to form a tube insertion hole (53). The left end of the left tank forming member (46B) and the right end of the right tank forming member (46A) protrude from the pipe connection plate (47), respectively.

  The pipe connecting plate (47) is formed from an aluminum brazing sheet having a brazing material layer on both sides, and is brazed to both tank forming members (46A) and (46B) using the brazing material layer on one side. Yes. A plurality of penetrating pipe insertion holes (54) that are long in the front-rear direction are aligned with the pipe insertion holes (53) of both tank forming members (46A) (46B) on both front and rear sides of the pipe connection plate (47). In this way, it is formed at intervals in the left-right direction. The front and rear side edges of the pipe connection plate (47) are each integrally formed with a protruding wall (47a) on the outside in the vertical direction, here upward, and both the protruding walls (47a) are connected to the pipe connecting plate (47a). The brazing material layer of 47) is brazed to the outer surfaces of the front and rear side walls of both tank forming members (46A) and (46B) across both tank forming members (46A) and (46B). The pipe connecting plate (47) is formed by pressing an aluminum brazing sheet to form a pipe insertion hole (54) and a protruding wall (47a).

Each partition member (48A) (48B) is formed of an aluminum brazing sheet having a brazing filler metal layer on both sides, and a plurality of parallel walls, here five flat walls (48a) and adjacent flat walls (48a) are tanked. The forming member (46A) (46B) has a corrugated plate shape composed of connecting portions (48b) that are alternately connected in the height direction (vertical direction) of the hollow portion, and the width direction of the flat wall (48a) faces the vertical direction. In this way, the tank forming members (46A) and (46B) are arranged over the entire length, and are brazed to the inner surfaces of the upper and lower walls of both tank forming members (46A) and (46B) using the brazing material layers on both sides. In each tank forming member (46A) (46B), the front and rear side portions of the partition member (48A) (48B) and the portion between the adjacent flat walls (48a) serve as the refrigerant flow path (55). Each partition member (48A) (48B) is located on both front and rear sides of the connecting portion (48b) from the connecting portion (48b) at the front end located on the tube insertion hole (53) side of the tank forming member (46A) (46B). A plurality of pipe end insertion notches (56) extending over the flat wall (48a) are formed in the pipe insertion holes (53) (54) on the front side of the tank forming member (46A) (46B) and the pipe connection plate (47). So as to coincide with each other. Further, the rear side of the connecting part (48b) from the rear side connecting part (48b) located on the pipe insertion hole (53) side of the tank forming member (46A) (46B) in each partition member (48A) (48B) A plurality of pipe end fitting notches (57) are formed on the flat wall (48a) located at the rear side of the tank insertion member (46A) (46B) and the pipe connection plate (47) through the pipe insertion hole (53 ) (54) with a space in the left-right direction. Further, a plurality of pipe end portions are fitted into the edge of the tank forming member (46A) (46B) on the pipe insertion hole (53) side of the flat wall (48a) at the rear end of each partition member (48A) (48B). The notch (58) is spaced in the left-right direction so that it matches the tank insertion members (46A) (46B) and the pipe insertion holes (53) (54) on the rear side of the pipe connection plate (47). Is formed. Each flat wall (48a) of the partition member (48B) disposed in the left tank forming member (46B) has a plurality of refrigerant passage holes (59) formed in a penetrating manner at intervals in the left-right direction. ing. The right partition member (48A) is formed by pressing the aluminum brazing sheet into a corrugated sheet and forming notches (56), (57), (58) for fitting the tube ends. The partition member (48B) is formed into a corrugated sheet by pressing an aluminum brazing sheet, and forms pipe end fitting notches (56) (57) (58) and a refrigerant passage hole (59). It is made by.

  On the left side surface of the refrigerant inlet / outlet member (49), there is formed a recess (61) into which the protruding portion from the pipe connecting plate (47) of the right tank forming member (46A) fits. The refrigerant inlet / outlet member (49) has a protruding portion of the right tank forming member (46A) fitted in the recess (61), and uses a suitable aluminum brazing sheet or brazing material sheet (not shown) to form the tank forming member (46A). It is brazed. The refrigerant inlet / outlet member (49) includes a refrigerant inflow passage (62) that leads to the three refrigerant passages (55) on the front side in the tank forming member (46A) and a refrigerant that leads to the three refrigerant passages (55) on the rear side. An outflow path (63) is formed, and a refrigerant inlet / outlet pipe (not shown) connected to the refrigerant inflow path (63) and a refrigerant outlet pipe (not shown) connected to the refrigerant inflow path (62) are connected to the refrigerant inlet / outlet member (49). It has come to be.

  The cap (51) is formed from an aluminum brazing sheet having a brazing filler metal layer on at least one side, and the pipe connection plate of the left tank forming member (46B) is formed on the surface of the cap (51) where the brazing filler metal layer is present. A recess (64) into which the protrusion from (47) fits is formed. The cap (51) is inserted into the recess (64) with the protruding portion of the left tank forming member (46B) and brazed to the tank forming member (46B) using the brazing material layer of the cap (51). ing. The cap (51) is made by pressing the aluminum brazing sheet to form the recess (64).

  The partition plate (52) is formed from an aluminum brazing sheet having a brazing filler metal layer on both sides, and the left end of the right tank forming member (46A) and the right partition member (48A) using the brazing filler metal layer on both sides. The surface and the right end surface of the left tank forming member (46B) and the left partition member (48B) are brazed.

  As shown in FIG. 19, the second header tank (42) has substantially the same configuration as the first header tank (41) and is turned upside down. Both header tanks (41) and (42) are pipes. The connection plates (47) are arranged so as to face each other. In both header tanks (41) and (42), the same components and the same parts are denoted by the same reference numerals. The second header tank (42) is different from the first header tank (41) in that it has a length over the entire length of the second header tank (42) instead of the two tank forming members (46A) (46B). The point having two tank forming members (46C), the point that one partition member (48C) is disposed in the tank forming member (46C) over the entire length, and the refrigerant inlet / outlet member ( 49) is not attached and the cap (51) is brazed like the left end, the refrigerant passage hole (59) is not formed in the partition member (48C), and the partition plate (52 ) Is not provided.

  And, the front part of the right side tank forming member (46A) of the first header tank (41) from the flat wall (48a) at the center of the partition member (48A) is the inlet header part (65), which is also the rear part. Is the exit header (66). A portion of the tank forming member (46C) of the second header tank (42) in front of the flat wall (48a) at the center of the partition member (48C) is the first intermediate header portion (67). The portion on the front side of the flat wall (48a) at the center of the partition member (48B) in the left tank forming member (46B) of the first header tank (41) is the second intermediate header portion (68), The portion is the third intermediate header portion (69). Further, a portion on the rear side of the flat wall (48a) at the center of the partition member (48C) in the tank forming member (46C) of the second header tank (42) is the fourth intermediate header portion (70). .

  The heat exchange pipe (43) is made of an aluminum extruded profile, and has a flat shape that is wide in the front-rear direction, and a plurality of refrigerant passages (43a) extending in the length direction are formed in parallel in the interior. Both ends of the heat exchange pipe (43) are connected to the pipe insertion holes (54) of the pipe connection plates (47) of the header tanks (41) and (42) and the tank forming members (46A) (46B) (46C), respectively. While being inserted into the tube insertion hole (53) and fitted in the notches (56) (57) (58) of the partition members (48A) (48B) (48C), the pipe connection plate (47 ) Is used to braze the pipe connecting plate (47) and the tank forming members (46A) (46B) (46C). Between the header tanks (41) and (42), a heat exchange pipe group (43A) composed of a plurality of heat exchange pipes (43) arranged in parallel at intervals in the left-right direction is provided in the front-rear direction. A plurality of rows, here two rows are arranged. Multiple heat exchange tubes (43) located in the right half of the front heat exchange tube group (43A) lead to the inlet header (65) and the first intermediate header (67), and are also located in the left half The plurality of heat exchange tubes (43) communicating with the first intermediate header portion (67) and the second intermediate header portion (68). The plurality of heat exchange tubes (43) located in the right half of the rear heat exchange tube group (43A) lead to the inside of the outlet header portion (66) and the fourth intermediate header portion (70). The plurality of heat exchange tubes (43) located in the section communicate with the third intermediate header section (69) and the fourth intermediate header section (70).

  The corrugated fin (44) is formed in a corrugated shape using an aluminum brazing sheet having a brazing filler metal layer on both sides, and a plurality of the corrugated fins (44) are connected in parallel in the front-rear direction to the connecting portion that connects the wave head and the wave bottom. A louver is formed. The corrugated fin (44) is shared by the front and rear heat exchange tube group (43A), and the width in the front and rear direction is the heat exchange tube (43) of the front heat exchange tube group (43A) and the rear side heat exchange. The distance between the rear side edge of the heat exchange pipe (43) of the pipe group (43A) is substantially equal. In addition, instead of one corrugated fin (44) being shared by both the front and rear heat exchange tube groups (43A), each corrugated fin is disposed between adjacent heat exchange tubes (43) of both heat exchange tube groups (43A). May be arranged.

  The evaporator (1) is manufactured by combining all members and brazing them together.

  The evaporator (1) constitutes a supercritical refrigeration cycle together with a compressor, a gas cooler, a decompressor, and an intermediate heat exchanger that exchanges heat between the refrigerant coming out of the gas cooler and the refrigerant coming out of the evaporator. For example, it is installed in a car.

In the above-described evaporator (40), as shown in FIG. 20, the CO ₂ that has been depressurized through the pressure reducer passes through the refrigerant inflow passage (62) of the refrigerant inlet / outlet member (49) and passes through the first header tank (41). ) Refrigerant in all the heat exchange tubes (43) of the front heat exchange tube group (43A) that enters the inlet header portion (65) and passes through the refrigerant flow path (55) to the inlet header portion (65). It flows into the passage (43a). The CO ₂ flowing into the refrigerant passage (43a) flows downward in the refrigerant passage (43a) and flows into the first intermediate header portion (67) of the second header tank (42). The CO ₂ flowing into the first intermediate header section (67) flows to the left through the refrigerant flow path (55), and flows through the front heat exchange pipe group (43A) leading to the second intermediate header section (68). The refrigerant flows into the refrigerant passages (43a) of all the heat exchange pipes (43), changes the flow direction, flows upward in the refrigerant passages (43a), and flows into the second intermediate header portion (68) of the first header tank (41). to go into. Next, CO ₂ flows into the third intermediate header portion (69) through the refrigerant passage hole (59) of the flat wall (48a) in the partition member (48B) in the left tank forming member (46B), The refrigerant flows into the refrigerant passages (43a) of all the heat exchange pipes (43) of the rear heat exchange pipe group (43A) that is divided and communicated with the third intermediate header section (69), and changes the flow direction to change the refrigerant. It flows downward in the passage (43a) and enters the fourth intermediate header portion (70) of the second header tank (42). Subsequently, CO ₂ flows to the right through the refrigerant flow path (55), and is diverted to all the heat exchange pipes (43) in the rear heat exchange pipe group (43A) that communicates with the outlet header section (66). The refrigerant flows in the refrigerant passage (43a), changes the flow direction, flows upward in the refrigerant passage (43a), and enters the outlet header portion (66) of the first header tank (41). Thereafter, CO ₂ flows through the refrigerant flow path (55) and flows out through the refrigerant outflow path (63) of the refrigerant inlet / outlet member (49). Then, while CO ₂ flows in the refrigerant passage (43a) of the heat exchange pipe (43), the air flow is exchanged with the air flowing in the direction indicated by the arrow X in FIGS. Leaked.

In the above embodiment, CO ₂ is used as the supercritical refrigerant of the supercritical refrigeration cycle, but is not limited to this, and ethylene, ethane, nitric oxide and the like are used.

  FIGS. 21 to 27 show modifications of the heat exchange tubes used in the above-described gas cooler (1) and evaporator (40). In the following description, the upper and lower sides and the left and right sides in FIGS.

  The heat exchange pipe (160) shown in FIGS. 21 and 22 includes flat upper and lower walls (161) and (162) (a pair of flat walls) facing each other and left and right side edges of the upper and lower walls (161) and (162). Spans the left and right side walls (163) (164), and between the left and right side walls (163) (164), spans the upper and lower walls (161) (162), and extends in the length direction with a predetermined distance from each other. And a plurality of refrigerant walls (166) arranged in the width direction inside. Here, the reinforcing wall (165) serves as a partition wall between the adjacent refrigerant passages (166). Further, the passage width of the refrigerant passage (166) is equal over the entire height.

  The left side wall (163) has a double structure, and is integrally formed in a raised shape below the left side edge of the upper wall (161) and extends over the entire height of the heat exchange pipe (160). The inner side wall ridges (168) integrally formed in a raised shape below the upper wall (161) on the inside of the convex ridges (167), and the upper side ridges are integrally formed in a raised shape from the left edge of the lower wall (162). The inner side wall ridges (169) are included. The outer side wall projections (167) are connected to the inner side wall projections (168) (169) and the lower wall (162) with the lower end engaged with the lower left edge of the lower wall (162). It is attached. Both the inner side wall ridges (168) and (169) are brazed to each other. The right side wall (164) is formed integrally with the upper and lower walls (161) (162). A protrusion (169a) extending in the longitudinal direction is integrally formed over the entire length on the tip surface of the inner side wall projection (169) of the lower wall (162), and the inner side wall projection (168) of the upper wall (161). A concave groove (168a) that extends in the longitudinal direction and into which the protrusion (169a) is press-fitted is formed over the entire length.

  The reinforcing wall (165) includes a reinforcing wall projection (170) integrally formed in a raised shape below the upper wall (161), and a reinforcing wall projection formed integrally in a raised shape above the lower wall (162). (171) are brazed to each other.

  The heat exchange tube (160) is manufactured using a metal plate (175) for tube manufacture as shown in FIG. The metal plate for tube production (175) is made of an aluminum brazing sheet having a brazing filler metal layer on both sides, and includes a flat upper wall forming portion (176) (flat wall forming portion) and a lower wall forming portion (177) (flat wall forming portion). ), An upper wall forming portion (176) and a lower wall forming portion (177), and a connecting portion (178) for forming a right side wall (164), an upper wall forming portion (176) and a lower wall forming portion ( 177) inner side wall projections (168) (169) integrally formed in a raised shape above the side edge opposite to the connecting portion (178) and forming the inner side portion of the left side wall (163), and the upper wall An outer side wall ridge forming portion (179) formed by extending a side edge (right side edge) opposite to the connecting portion (178) in the forming portion (176) outward in the left-right direction (right direction); A plurality of reinforcing wall ridges (170) (171) integrally formed in a raised shape above the upper wall forming portion (176) and the lower wall forming portion (177) at predetermined intervals in the left-right direction. And upper wall formation The reinforcing wall ridges (170) of the portion (176) and the reinforcing wall ridges (171) of the lower wall forming portion (177) are located symmetrically with respect to the center line in the width direction. A protrusion (169a) is formed on the tip surface of the inner side wall ridge (169) of the lower wall (162), and a groove (168a) is formed on the tip surface of the inner side wall ridge (168) of the upper wall (161). Is formed. The heights of the inner side wall projections (168) and (169) and all the reinforcing wall projections (170) and (171) are equal to each other. The upper and lower wall thickness of the connecting portion (178) is larger than the thickness of the upper and lower wall forming portions (176) (177), and the upper end surface of the connecting portion (178) is the inner side wall ridges (168) (169) and It is substantially flush with the upper end surfaces of the reinforcing wall projections (170) (171).

  The side wall protrusions (168) (169) and the reinforcing wall protrusions (170) (171) are integrally formed on one side of the aluminum brazing sheet clad with the brazing material on both sides, so that the side wall protrusions are formed. A brazing filler metal layer (not shown) is formed on both side surfaces and tip surfaces of the strips (168) and (169) and the reinforcing wall projections (170) and (171), and on both upper and lower surfaces of the upper and lower wall forming portions (176) and (177). However, the brazing filler metal layers on the front end surfaces of the side wall protrusions (168) and (169) and the reinforcing wall protrusions (170) and (171) are thicker than the brazing filler metal layers in the other portions.

  Then, the metal plate for tube production (175) is sequentially bent at the left and right side edges of the connecting portion (178) by roll forming (see FIG. 23 (b)) and finally bent into a hairpin shape for the inner side wall. The protrusions (168) and (169) and the reinforcing wall protrusions (170) and (171) are abutted with each other, and the protrusion (169a) is press-fitted into the groove (168a).

  Next, the outer side wall ridge forming part (179) is bent to be along the outer surface of the both inner side wall ridges (168) and (169), and the tip part is deformed to form the lower wall forming part (177). To obtain a bent body (180) (see FIG. 23 (c)).

  Thereafter, the bent body (180) is heated to a predetermined temperature, and the tips of the inner side wall projections (168) (169) are brazed to the tips of the reinforcing wall projections (170) (171), respectively. At the same time, the heat exchange pipe (160) is manufactured by brazing the outer side wall projections (179) and the inner side wall projections (168) (169) and the lower wall formation (177). The The heat exchange pipe (160) is manufactured at the same time as the gas cooler (1) or the evaporator (40).

  In the case of the heat exchange pipe (185) shown in FIG. 24, a protrusion (186) extending over the entire length and a groove (187) extending over the entire length are formed on the front end surfaces of all the reinforcing wall projections (170) on the upper wall (161). Are formed alternately. In addition, the protrusions (186) of the reinforcing wall projections (170) of the upper wall (161) that are in contact with the leading ends of all the reinforcing wall projections (171) of the lower wall (162) are fitted. The concave grooves (188) and the protrusions (189) that fit into the concave grooves (187) of the reinforcing wall projections (170) of the upper wall (161) are alternately formed over the entire length. Other configurations are the same as those of the heat exchange pipe (160) shown in FIGS. 21 and 22, and are manufactured in the same manner as the heat exchange pipe (160) shown in FIGS.

  The heat exchange pipe (190) shown in FIG. 25 and FIG. 26 is a reinforcing member formed by brazing a reinforcing wall projection (191) integrally formed in a raised shape below the upper wall (161) to the lower wall (162). The wall (165) and the reinforcing wall (165) formed by brazing the reinforcing wall projection (192), which is integrally formed so as to protrude upward from the lower wall (162), to the upper wall (161) are in the left-right direction. In the upper and lower walls (161) (162), the protrusions (193) covering the entire length are integrally formed with the portions of the upper and lower walls (161) (162) where the reinforcing wall projections (192) (191) abut. A concave groove (194) is formed on the front end surface of the projection (193) to fit the front end of the reinforcing wall projection (191) (192), and the front end of the reinforcing wall projection (191) (192). Is fitted into the groove (194) of the protrusion (193) and brazed to the protrusion (193). The thickness in the left-right direction of the protrusion (193) is slightly larger than the thickness in the left-right direction of the reinforcing wall projections (191) (192). Other configurations are the same as those of the heat exchange heat exchange pipe (160) shown in FIGS.

  The heat exchange pipe (190) is manufactured using a pipe manufacturing metal plate (195) as shown in FIG. The metal plate for tube production (195) is made of an aluminum brazing sheet having a brazing filler metal layer on both sides, and is raised above the upper wall forming part (176) and the lower wall forming part (177) at a predetermined interval in the left-right direction. A plurality of reinforcing wall ridges (191) (192) integrally formed in a shape, and reinforcement of the reinforcing wall ridges (191) and lower wall forming portions (177) of the upper wall forming portion (176). The wall ridge (192) is in a position that is asymmetrical with respect to the center line in the width direction. The heights of the ridges (191) and (192) for both reinforcing walls are equal to each other and are about twice the height of the ridges (168) and (169) for the side walls. Further, in the upper wall forming portion (176) and the lower wall forming portion (177), the lower wall forming portion (177) and the reinforcing wall projections (192) (191) of the upper wall forming portion (176) are in contact with each other. The protrusion (193) extending over the entire length is integrally formed, and a concave groove (194) into which the distal end portion of the reinforcing wall projections (191) (192) is fitted is formed on the distal end surface of the protrusion (193). The other structure of the metal plate for tube manufacture (195) is the same as that of the metal plate for tube manufacture (175) shown in FIG.

  Then, the metal plate for tube production (195) is sequentially bent at the left and right side edges of the connecting portion (178) by roll forming (see FIG. 27 (b)) and finally bent into a hairpin shape for the inner side wall. The protrusions (168) and (169) are butted together to press-fit the protrusions (169a) into the grooves (168a), and the top end of the reinforcing wall protrusions (191) of the upper wall forming part (176) In the groove (194) of the projection (193) of the wall forming portion (177), the tip of the reinforcing wall projection (192) of the lower wall forming portion (177) is connected to the protrusion of the upper wall forming portion (176) ( 193) are respectively inserted into the concave grooves (194).

  Next, the outer side wall ridge forming part (179) is bent to be along the outer surface of the both inner side wall ridges (168) and (169), and the tip part is deformed to form the lower wall forming part (177). To obtain a bent body (196) (see FIG. 27 (c)).

  Thereafter, the bent body (196) is heated to a predetermined temperature, and the tips of the inner side wall ridges (168) (169) are brazed to each other, and the tips of the reinforcing wall ridges (191) (192) are attached. By brazing the projections (193), and further brazing the outer side wall projections (179), the inner side wall projections (168) (169) and the lower wall formation (177), An exchange heat exchange tube (190) is manufactured. The production of the heat exchange heat exchange pipe (190) is performed simultaneously with the production of the gas cooler (1) or the evaporator (40).

It is a perspective view which shows the whole structure of the gas cooler to which the heat exchanger by this invention is applied. FIG. 2 is a partially omitted vertical sectional view of the gas cooler of FIG. It is a perspective view which shows the part of the 1st header tank of the gas cooler of FIG. It is a disassembled perspective view which shows the 1st header tank of the gas cooler of FIG. It is an AA line expanded sectional view of FIG. FIG. 3 is an enlarged sectional view taken along line B-B in FIG. 2. It is a disassembled perspective view which shows the 2nd header tank of the gas cooler of FIG. FIG. 3 is an enlarged sectional view taken along the line CC in FIG. 2. It is a figure which shows the flow of the refrigerant | coolant in the gas cooler of FIG. It is a fragmentary perspective view which shows the 1st modification of the partition member arrange | positioned in the tank formation member of a gas cooler. It is a fragmentary perspective view which shows the 2nd modification of the partition member arrange | positioned in the tank formation member of a gas cooler. It is a fragmentary perspective view which shows the 3rd modification of the partition member arrange | positioned in the tank formation member of a gas cooler. It is a perspective view which shows the whole structure of the evaporator to which the heat exchanger by this invention is applied. FIG. 14 is a partially omitted vertical cross-sectional view of the evaporator of FIG. It is the DD sectional view taken on the line of FIG. It is a disassembled perspective view which shows the 1st header tank of the evaporator of FIG. It is the EE line expanded sectional view of FIG. It is the FF line expanded sectional view of FIG. It is a disassembled perspective view which shows the 2nd header tank of the evaporator of FIG. It is a figure which shows the flow of the refrigerant | coolant in the evaporator of FIG. It is a transverse cross section showing the 1st modification of a heat exchange pipe. It is the elements on larger scale of FIG. It is a figure which shows the manufacturing method of the heat exchange pipe | tube shown in FIG. It is a transverse cross section showing the 2nd modification of a heat exchange pipe. It is a transverse cross section showing the 3rd modification of a heat exchange pipe. It is the elements on larger scale of FIG. It is a figure which shows the manufacturing method of the heat exchange pipe | tube shown in FIG.

Explanation of symbols

(1): Gas cooler (heat exchanger)
(2) (3): Header tank
(4) (160) (185) (190): Heat exchange pipe
(7A) (7B) (7C): Tank forming member
(8): Pipe connection plate
(9A) (9B) (9C) (30A) (30B) (30C) (35A) (35B) (35C): Partition member
(13): Tube insertion hole
(21): Tube insertion hole
(22): Refrigerant flow path
(23) (32) (36) (37): Notch for pipe end fitting
(30a): Opposite wall
(30b): Connection part
(35a): Flat wall
(35b): Connection part
(40): Evaporator (heat exchanger)
(41) (42): Header tank
(43): Heat exchange pipe
(46A) (46B) (46C): Tank forming member
(47): Pipe connection plate
(48A) (48B) (48C): Partition member
(48a): Flat wall
(48b): Connection part
(53): Tube insertion hole
(54): Tube insertion hole
(55): Refrigerant flow path
(56) (57) (58): Notch
(59): Refrigerant passage hole

Claims (26)

Heat provided with a hollow tank forming member and a partition member disposed in the tank forming member, joined to the tank forming member, and partitioned into a plurality of front and rear refrigerant flow paths extending in the length direction of the tank forming member. Exchanger header tank. A plurality of tube insertion holes are formed in the tank forming member, and a plurality of tube end insertion notches into which a part of the end of the heat exchange tube is fitted are formed in the partition member so as to match the tube insertion holes. The header tank for a heat exchanger according to claim 1. The header tank for a heat exchanger according to claim 1 or 2, wherein the tank forming member is formed by pressing a hollow extruded shape member made of aluminum. The partition member is formed by pressing an aluminum brazing sheet having a brazing filler metal layer on both sides, and the partition member is brazed to the tank forming member using the brazing filler metal layer. The header tank for heat exchangers described in any one of? The pipe connection plate joined to the outer surface of the tank forming member is provided, and a plurality of pipe insertion holes are formed in the pipe connection plate so as to coincide with the pipe insertion holes of the tank forming member. The header tank for heat exchangers in any one of -4. The pipe connecting plate is formed by pressing an aluminum brazing sheet having a brazing filler metal layer on both sides, and the pipe connecting plate is brazed to the tank forming member using the brazing filler metal layer. The header tank for a heat exchanger according to claim 5. The header tank for a heat exchanger according to any one of claims 1 to 6, wherein the partition member has a strip shape and is arranged so that a width direction thereof faces a height direction of a hollow portion of the tank forming member. . The partition member has a substantially U-shaped cross section, the width direction of the pair of opposing walls facing each other faces the height direction of the hollow portion of the tank forming member, and the tip of the facing wall faces the tube insertion hole side The header tank for heat exchangers in any one of Claims 1-6 arrange | positioned. The partition member has a corrugated plate shape composed of a plurality of flat portions parallel to each other and a connecting portion that connects adjacent flat portions, and the width direction of the flat portion faces the height direction of the hollow portion of the tank forming member. The header tank for heat exchangers in any one of Claims 1-6 arrange | positioned. The tank forming member is provided with a plurality of groups of hole insertion holes formed at intervals in the length direction thereof, and provided in a plurality of rows at intervals in the front-rear direction. The partition member, which is a corrugated plate composed of a connecting portion that connects the adjacent flat portions to each other, has a flat portion whose width direction faces the height direction of the hollow portion of the tank forming member and at least one flat portion forms a tank. A plurality of pipe end insertion notches into which a part of the end of the heat exchange pipe fits are arranged in the partition member so as to be positioned between the pipe insertion holes adjacent to each other in the front-rear direction of the member. The heat according to any one of claims 1 to 6, wherein a notch for inserting a tube end portion is not formed in a flat portion formed between the tube insertion holes adjacent to each other in the front-rear direction of the partition member. Exchanger header tank. A heat exchanger comprising a pair of header tanks spaced apart from each other, and a plurality of heat exchange pipes arranged in parallel between both header tanks and having both ends connected to both header tanks, respectively. There,
Each header tank is a hollow tank forming member, and a partition member that is disposed in the tank forming member, joined to the tank forming member, and that partitions the inside of the tank forming member into a plurality of front and rear refrigerant channels extending in the length direction thereof. Equipped with a heat exchanger. A plurality of tube insertion holes are formed in the tank forming member, and a plurality of tube end insertion notches into which a part of the end of the heat exchange tube is fitted are formed in the partition member so as to coincide with the tube insertion holes. The heat exchange according to claim 11, wherein the end of the exchange pipe is inserted into the pipe insertion hole of the tank forming member, and is connected to both header tanks in a state of being fitted into the notch for fitting the pipe end of the partition member. vessel. The heat exchanger according to claim 11 or 12, wherein the tank forming member is formed by subjecting an aluminum hollow extruded shape to pressing. The partition member is formed by pressing an aluminum brazing sheet having a brazing material layer on both sides, and the partition member is brazed to the tank forming member using the brazing material layer. The heat exchanger according to any one of? 13. A pipe connecting plate joined to the outer surface of the tank forming member is provided, and a plurality of pipe insertion holes are formed in the pipe connecting plate so as to match the pipe inserting holes of the tank forming member. The heat exchanger according to any one of claims 11 to 14, wherein the end portion is connected to both header tanks in a state of being inserted into a tube insertion hole of the tube connection plate. The pipe connecting plate is formed by pressing an aluminum brazing sheet having a brazing material layer on both sides, and the pipe connecting plate is brazed to the tank forming member using the brazing material layer, The heat exchanger according to claim 15, wherein the heat exchange pipe is brazed to the pipe connection plate using a brazing material layer of the pipe connection plate. The heat exchanger according to any one of claims 11 to 16, wherein the partition member has a strip shape and is arranged so that a width direction thereof faces a height direction of the hollow portion of the tank forming member. The partition member has a substantially U-shaped cross section, the width direction of the pair of opposing walls facing each other faces the height direction of the hollow portion of the tank forming member, and the tip of the facing wall faces the tube insertion hole side The heat exchanger in any one of Claims 11-16 arrange | positioned. The partition member has a corrugated plate shape composed of a plurality of flat portions parallel to each other and a connecting portion that connects adjacent flat portions, and the width direction of the flat portion faces the height direction of the hollow portion of the tank forming member. The heat exchanger in any one of Claims 11-16 arrange | positioned in. The first header tank of the pair of header tanks includes a plurality of tank forming members arranged and fixed in the length direction, and the second header tank is also a tank forming member of the first header tank. The tank forming member is disposed so as to straddle two adjacent tank forming members of the first header tank, and flows into one tank forming member of the first header tank. The refrigerated refrigerant passes through all the heat exchange tubes and the tank forming member of the second header tank and flows into the other tank forming member of the first header tank. The heat exchanger in any one of. The number of tank forming members of the first header tank is two, and both tank forming members are joined via a partition plate so that the hollow portions do not communicate with each other, and the number of tank forming members of the second header tank is one. The heat exchanger according to claim 20. The first header tank of the pair of header tanks includes two tank forming members that are arranged and fixed in the length direction, and the second header tank is also the two tank forming members of the first header tank. One tank forming member arranged to straddle,
The tank forming members of both header tanks are provided with a plurality of rows of hole insertion holes formed at intervals in the longitudinal direction and spaced in the front-rear direction, and are formed in the tank forming members of both header tanks. The partition member, which is a corrugated plate formed by connecting portions that connect mutually parallel flat portions and adjacent flat portions, has at least one with the width direction of the flat portion facing the height direction of the hollow portion of the tank forming member. A plurality of tube end portions are fitted so that the flat portion is positioned between the pipe insertion holes adjacent to each other in the front-rear direction in the tank forming member and the pipe connection plate, and a part of the end portion of the heat exchange tube is fitted in the partition member. The notch is formed so as to match the tube insertion hole, and the end of the heat exchange tube is inserted into the tube insertion hole of the tank forming member and fitted into the tube end fitting notch of the partition member In both headers Is connected to the click, not formed with cutout which a tube end fitted in the flat portion located between tube insertion holes adjacent to each other in the longitudinal direction of the partition member,
The heat exchanger according to any one of claims 11 to 16, wherein a refrigerant passage hole is formed in each flat portion of the partition member disposed in one tank forming member of the first header tank. A refrigeration cycle comprising a compressor, a gas cooler, an evaporator, a decompressor, and an intermediate heat exchanger for exchanging heat between the refrigerant coming out of the gas cooler and the refrigerant coming out of the evaporator, and using a supercritical refrigerant, the gas cooler A supercritical refrigeration cycle comprising the heat exchanger according to any one of claims 11 to 21. A refrigeration cycle comprising a compressor, a gas cooler, an evaporator, a decompressor, an intermediate heat exchanger for exchanging heat between the refrigerant coming out of the gas cooler and the refrigerant coming out of the evaporator, and using a supercritical refrigerant, the evaporator A supercritical refrigeration cycle comprising the heat exchanger according to any one of claims 11 to 19 and 22. The supercritical refrigeration cycle according to claim 23 or 24, wherein the supercritical refrigerant is carbon dioxide. A vehicle on which the supercritical refrigeration cycle according to any one of claims 23 to 25 is mounted as a car air conditioner.

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