JPWO2007074796A1 - Heat exchanger and manufacturing method thereof - Google Patents

Abstract

The heat exchanger 1 includes a liquid receiver 6 fixed to the first header tank 2. The first header tank 2 has a refrigerant outlet 13 and a refrigerant inlet 14. The liquid receiver 6 is disposed in the liquid receiver body 17, the cap 18 that closes the opening at both ends of the liquid receiver body 17, and the liquid receiver body 17. A partition member 19 partitioned into 17A, 17B, and 17C and a desiccant 21 placed in one chamber 17B are provided. Two communication ports 24 and 25 are formed on the peripheral wall of the receiver body 17. The portions around the two communication ports 24 and 25 on the outer peripheral surface of the peripheral wall of the receiver body 17 are brazed to the portions around the refrigerant outlet 13 and the refrigerant inlet 14 on the outer peripheral surface of the first header tank 2. Thus, the receiver body 17 and the first header tank 2 are brazed. According to this heat exchanger 1, the leakage of the refrigerant from between the liquid receiver and the header tank can be completely prevented.

Description

  The present invention relates to a heat exchanger used in, for example, a refrigeration cycle constituting a car air conditioner and a method for manufacturing the same.

  In this specification and claims, the top and bottom, left and right in FIG.

  In recent years, for the purpose of improving the ease of assembly to the vehicle body and saving installation space, a condenser with a receiver on the header has been used as a condenser for the refrigeration cycle that constitutes a car air conditioner. It is coming. Moreover, in order to improve the refrigeration capacity of the refrigeration cycle, a supercooler that supercools the liquid refrigerant condensed by the condenser to a temperature lower by about 5 to 15 ° C. than the condensation temperature has come to be used. Therefore, an integrated heat exchanger in which a condensing part having a condenser function and a supercooling part having a supercooler function are integrally provided has been used.

  As this type of integrated heat exchanger, a pair of header tanks extending in the vertical direction and spaced apart from each other, and arranged in parallel with a space in the vertical direction between the two header tanks, both ends are A plurality of heat exchange pipes respectively connected to both header tanks, fins disposed between adjacent heat exchange pipes, and a receiver that is fixed to one of the header tanks and contains a desiccant inside. And a condensing part having a function as a condenser by partitioning the first header tank and the second header tank at the same height position, and a subcooler located below the condensing part And a supercooling section having a function as a receiver, and having a flow path in the peripheral wall of the first header tank so that the refrigerant flowing out of the condenser section passes through the receiver and flows into the supercooling section Device connection Tsu with click is brazed, receiver has been known one which is screwed to the receiver connecting block (see Patent Document 1).

  In the integrated heat exchanger described in Patent Document 1, when a large amount of moisture is adsorbed on the desiccant and the performance of the desiccant is reduced, the desiccant is adsorbed on the desiccant by removing the receiver from the receiver connection block. The removed moisture can be removed and the desiccant can be exchanged.

  By the way, in the integrated heat exchanger described in Patent Document 1, the leakage of the refrigerant is prevented by sealing between the receiver connection block and the receiver using a sealing member such as an O-ring. .

However, when the space between the liquid receiver connection block and the liquid receiver is sealed using a seal member such as an O-ring, minute leakage of the refrigerant cannot be completely prevented. Recently, the standard value of the minute leakage of refrigerant from the refrigeration cycle has become stricter year by year based on the global warming prevention program. In the integrated heat exchanger described in Patent Document 1, in the future, the liquid receiving There is a possibility that the leakage of the refrigerant from between the container connection block and the liquid receiver cannot satisfy the reference value of the minute leakage of the refrigerant.
Japanese Patent Laid-Open No. 2004-211921

  An object of the present invention is to solve the above-mentioned problems and to completely prevent leakage of refrigerant from between the liquid receiver and the header tank in the heat exchanger in which the liquid receiver is fixed to the header tank. Is to provide.

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

  1) A pair of header tanks that are spaced apart from each other and that extend in the vertical direction between the two header tanks, and are arranged in parallel in the vertical direction between the two header tanks, and both ends are connected to both header tanks. A plurality of heat exchange pipes, fins disposed between adjacent heat exchange pipes, and a liquid receiver fixed to the first header tank, wherein the first header tank has a refrigerant outlet and a refrigerant inlet. In addition, the liquid receiver has first and second communication ports, the first communication port communicates with the refrigerant outlet, and the second communication port communicates with the refrigerant inlet. A heat exchanger in which the liquid receiver is directly or indirectly metal-bonded to the first header tank.

2) The liquid receiver extends in the vertical direction and has a cylindrical liquid receiver body that is open at both upper and lower ends, a cap that closes the upper and lower ends of the liquid receiver body, and a liquid receiver that is disposed in the liquid receiver body and receives the liquid. A partition member that divides the interior of the vessel body into a plurality of chambers, and a desiccant placed in one of the chambers formed in the receiver body by the partition member,
First and second communication ports are formed in the peripheral wall of the liquid receiver body, and a portion around the two communication ports on the peripheral wall outer peripheral surface of the receiver body is a refrigerant outlet on the peripheral wall outer surface of the first header tank and The receiver body and the first header tank are brazed so as to be brazed to the portion around the refrigerant inlet, both caps are brazed to the upper and lower ends of the receiver body, and the partition member is The heat exchanger as described in 1) above, which is composed of a multi-hole plate and whose peripheral portion is brazed to the inner peripheral surface of the peripheral wall of the receiver body.

3) The liquid receiver is formed by a cylindrical liquid receiver body extending in the vertical direction and having both upper and lower ends opened, a cap that closes the upper and lower end openings of the liquid receiver body, and a mesh. A desiccant-containing bag disposed, and a desiccant contained in the desiccant-containing bag,
First and second communication ports are formed in the peripheral wall of the liquid receiver body, and a portion around the two communication ports on the peripheral wall outer peripheral surface of the receiver body is a refrigerant outlet on the peripheral wall outer surface of the first header tank and The receiver body and the first header tank are brazed so as to be brazed to the portion around the refrigerant inlet, and both caps are brazed to the upper and lower ends of the receiver body, respectively, and the desiccant is contained. The heat exchanger as described in 1) above, wherein the mesh forming the bag is sized so that the desiccant does not pass therethrough.

  4) The heat exchanger according to 3) above, wherein the mesh is made of a material that maintains a solid phase in a temperature range of 650 ° C. or lower.

  5) The liquid receiver support member is metal-bonded to the outer surface of the first header tank, and the liquid receiver is metal-bonded to the liquid receiver support member. The refrigerant of the first header tank is connected to the liquid receiver support member. The first and second refrigerant flow passages are formed to connect the outlet and the first communication port of the liquid receiver, and the refrigerant inlet of the first header tank and the second communication port of the liquid receiver, respectively. 1) The heat exchanger described.

6) The receiver support member has a stepped bottomed hole consisting of a large diameter portion and a small diameter portion connected to the lower end of the large diameter portion, and a stepped bottomed hole extending from the upper surface thereof to the lower end of the large diameter portion. A first hole to be passed through the inside of the large diameter portion, and a second hole to be passed through the outside surface and the inside of the small diameter portion of the stepped bottom hole,
The liquid receiver has a cylindrical liquid receiver body whose upper end is closed and whose lower end is open, a partition member made of a multi-hole plate and fixed to the upper part of the liquid receiver body, and the liquid receiver body. A desiccant placed in the room above the partition member,
A first diameter-reduced portion that is fitted into a lower portion of the receiver body in a portion above the first hole in the large-diameter portion of the stepped bottomed hole of the receiver support member; A tapered portion continuous with the lower end of the diameter portion and gradually reduced in diameter downward, and a second reduced diameter portion continuous with the lower end of the tapered portion and fitted into the small diameter portion of the stepped bottomed hole, A first communication port that communicates with the refrigerant outlet of the first header tank is formed in the tapered portion, and a lower end opening of the second reduced diameter portion serves as a second communication port that communicates with the refrigerant inlet of the first header tank,
With the first reduced diameter portion of the receiver body inserted into the large diameter portion of the stepped bottomed hole of the receiver support member, the second reduced diameter portion is inserted into the small diameter portion of the receiver support member. A portion around the stepped bottomed hole on the upper surface and the outer peripheral surface of the peripheral wall of the receiver body are brazed, and a portion around the first and second holes on the outer surface of the receiver support member is the first portion. The outer surface of the receiver support member and the peripheral wall of the first header tank are brazed so as to be brazed to the refrigerant outlet and the peripheral portion of the refrigerant inlet on the outer peripheral surface of the peripheral wall of the header tank,
A first refrigerant flow passage is formed by the lower portion and the first hole in the large-diameter portion of the stepped bottomed hole in the receiver support member, and the second and second holes by the lower portion and the second hole in the small-diameter portion of the stepped bottomed hole. The heat exchanger according to 5) above, wherein a refrigerant flow passage is formed.

  7) The thickness of the portion around the large diameter portion of the stepped bottom hole in the receiver support member is 2.5 times or less the thickness of the peripheral wall of the first reduced diameter portion in the receiver body. The heat exchanger as described in 6) above.

  8) The heat exchanger according to 2, 3, or 6, wherein the desiccant is made of synthetic zeolite, and the pore diameter of the synthetic zeolite is 3 to 5 angstroms.

9) A method for producing the heat exchanger according to 2) above,
A pair of header tanks, a plurality of heat exchange tubes, a plurality of fins, a cylindrical liquid receiver body extending in the vertical direction and having upper and lower ends opened, and a cap for closing the upper and lower ends of the liquid receiver body Preparing a partition member that partitions the receiver body into a plurality of chambers, and a desiccant;
Forming a refrigerant outlet and a refrigerant inlet in the first header tank;
Forming first and second communication ports in the peripheral wall of the receiver body;
Both header tanks are spaced apart from each other, and heat exchange tubes and fins are alternately disposed between the header tanks.
Disposing the partition member in the receiver body so as to form a plurality of chambers in the receiver body;
Placing a desiccant in any one of the chambers of the receiver body;
Placing caps on the top and bottom ends of the receiver body,
Disposing the receiver body so that the two communication ports of the receiver body and the refrigerant outlet and the refrigerant inlet of the first header tank match.
Temporarily fix all members with a jig,
The temporary fixing body is heated to a brazing temperature, and both the header tank and the heat exchange pipe, the heat exchange pipe and the fin, the first header tank and the receiver body, and the receiver body, the partition member and the cap are brazed at the same time. And a method of manufacturing a heat exchanger including removing moisture adsorbed on the desiccant.

10) A method for producing the heat exchanger according to 3) above,
A pair of header tanks, a plurality of heat exchange tubes, a plurality of fins, a cylindrical liquid receiver body extending in the vertical direction and having upper and lower ends opened, and a cap for closing the upper and lower ends of the liquid receiver body Preparing a desiccant-containing bag formed of a mesh and containing a desiccant;
Forming a refrigerant outlet and a refrigerant inlet in the first header tank;
Forming first and second communication ports in the peripheral wall of the receiver body;
Both header tanks are spaced apart from each other, and heat exchange tubes and fins are alternately disposed between the header tanks.
Putting a desiccant-containing bag in the receiver body,
Placing caps on the top and bottom ends of the receiver body,
Disposing the receiver body so that the two communication ports of the receiver body and the refrigerant outlet and the refrigerant inlet of the first header tank match.
Temporarily fix all members with a jig,
The temporary fixing body is heated to a brazing temperature, and both the header tank and the heat exchange pipe, the heat exchange pipe and the fin, the first header tank and the receiver body, and the receiver body and the cap are brazed at the same time, A method for producing a heat exchanger, comprising removing moisture adsorbed on a desiccant.

11) A method for producing the heat exchanger according to 6) above,
A pair of header tanks, a plurality of heat exchange tubes, a plurality of fins, a tubular receiver body extending in the vertical direction and having an upper end closed and a lower end opened, a receiver support member, Providing a partition member disposed in the upper part of the liquid container body and a desiccant;
While placing the desiccant in the upper end of the receiver body, placing the partition member below it, fixing the partition member in the receiver body by deforming the peripheral wall of the receiver body,
The lower end portion of the liquid receiver body has a first reduced diameter portion, a tapered portion continuous with the lower end of the first reduced diameter portion and gradually reduced in diameter downward, and a second continuous with the lower end of the tapered portion. A first communication port is formed in the tapered portion, and a lower end opening of the second reduced diameter portion is used as a second communication port.
A stepped bottom hole consisting of a small diameter portion extending downward from the upper surface of the receiver support member and continuing to the lower end of the large diameter portion and the large diameter portion, and a large diameter of the outer surface and the stepped bottom hole. Forming a first hole to be passed through the inside of the part and a second hole to be passed through the outside surface and the inside of the small diameter part of the stepped bottomed hole;
Both header tanks are spaced apart from each other, and heat exchange tubes and fins are alternately disposed between the header tanks.
Disposing the liquid receiver support member so that the openings to the outer surfaces of the first and second holes of the liquid receiver support member coincide with the refrigerant outlet and the refrigerant inlet of the first header tank;
The second reduced diameter portion of the receiver body is fitted into the small diameter portion of the stepped bottomed hole of the liquid receiving support member, and the first reduced diameter portion is inserted from the first hole in the large diameter portion of the stepped bottomed hole. Fit into the upper part,
Disposing a ring-shaped brazing material between the portion around the stepped bottomed hole on the upper surface of the receiver support member and the outer peripheral surface of the peripheral wall of the receiver body;
Temporarily fixing both header tanks, heat exchange tubes, fins, receiver support member and receiver body with a jig;
The temporary fixing body is heated to a brazing temperature, and both the header tank and the heat exchange pipe, the heat exchange pipe and the fin, the first header tank and the liquid receiver support member, and the liquid receiver support member and the liquid receiver body are simultaneously A method of manufacturing a heat exchanger that includes brazing and removing moisture adsorbed on a desiccant.

  According to the heat exchanger of 1), the first header tank has the refrigerant outlet and the refrigerant inlet, and the liquid receiver has the first and second communication ports. The liquid receiver is directly or indirectly metal-bonded to the first header tank with the communication port connected to the refrigerant outlet and the second communication port connected to the refrigerant inlet. It becomes possible to completely prevent the refrigerant from leaking from the one header tank.

  According to the heat exchanger of 2) above, the liquid receiver is a cylindrical liquid receiver main body that extends in the vertical direction and is open at both upper and lower ends, a cap that closes the upper and lower end openings of the liquid receiver main body, and the liquid receiver A partition member disposed in the receiver body and partitioning the receiver body into a plurality of chambers; and a desiccant placed in one of the chambers formed in the receiver body by the partition member. The first and second communication ports are formed in the peripheral wall of the liquid receiver body, and the portions around the two communication ports on the peripheral wall outer surface of the liquid receiver body are on the peripheral wall outer surface of the first header tank. Since the liquid receiver body and the first header tank are brazed so as to be brazed to the refrigerant outlet and the peripheral part of the refrigerant inlet, the gap between the liquid receiver and the first header tank It becomes possible to completely prevent the leakage of the refrigerant.

  Moreover, since both header tanks and heat exchange pipes, heat exchange pipes and fins, the first header tank and receiver body, and the receiver body, partition member and cap can be manufactured by brazing at the same time. Unlike the integrated heat exchanger described in Patent Document 1, it is not necessary to screw the receiver, and the manufacturing operation becomes relatively simple. Moreover, the moisture adsorbed on the desiccant can be removed simultaneously with the brazing. In addition, when a large amount of moisture is adsorbed to the desiccant when it is used in a refrigeration cycle and the performance of the desiccant deteriorates, the heat exchanger is removed from the refrigeration cycle and heated, for example, in a vacuum atmosphere to function as molecular sieve By applying the above heat energy, the moisture adsorbed by the desiccant can be released and reused.

  According to the heat exchanger of the above 3), the liquid receiver is made up of a cylindrical liquid receiver body that extends in the vertical direction and is open at both upper and lower ends, a cap that closes the upper and lower end openings of the liquid receiver body, and a mesh. A desiccant storage bag formed and disposed in the receiver body, and a desiccant stored in the desiccant container bag. First and second communication ports are provided on the peripheral wall of the receiver body. Formed, and the portion around the two communication ports on the outer peripheral surface of the peripheral wall of the receiver body is brazed to the refrigerant outlet and the peripheral portion of the refrigerant inlet on the outer peripheral surface of the peripheral wall of the first header tank, Since the liquid receiver body and the first header tank are brazed, it is possible to completely prevent the refrigerant from leaking between the liquid receiver and the first header tank.

  Moreover, since both header tanks and heat exchange pipes, heat exchange pipes and fins, the first header tank and the liquid receiver body, and the liquid receiver body and the cap can be manufactured by brazing at the same time, Patent Literature Unlike the integrated heat exchanger according to 1, the receiver is not required to be screwed, and the manufacturing operation is relatively simple. Moreover, the moisture adsorbed on the desiccant can be removed simultaneously with the brazing. In addition, when a large amount of moisture is adsorbed to the desiccant when it is used in a refrigeration cycle and the performance of the desiccant deteriorates, the heat exchanger is removed from the refrigeration cycle and heated, for example, in a vacuum atmosphere to function as molecular sieve By applying the above heat energy, the moisture adsorbed by the desiccant can be released and reused.

  According to the heat exchanger of the above 4), it is possible to prevent the mesh from melting even when heating to the brazing temperature at the time of manufacturing the heat exchange tube.

  According to the heat exchanger of 5) above, the receiver support member is metal-bonded to the outer surface of the first header tank, and the receiver is metal-bonded to the receiver support member. The first and second members let the member communicate with the refrigerant outlet of the first header tank and the first communication port of the receiver body, and the refrigerant inlet of the first header tank and the second communication port of the receiver body, respectively. Since the two refrigerant flow passages are formed, it is possible to completely prevent leakage of refrigerant from between the first header tank and the receiver support member and from between the receiver receiver and the receiver. Is possible.

  Moreover, when the receiver body is brazed to the receiver support member, moisture adsorbed on the desiccant can be removed simultaneously with the brazing. In addition, when a large amount of moisture is adsorbed to the desiccant when it is used in a refrigeration cycle and the performance of the desiccant deteriorates, the heat exchanger is removed from the refrigeration cycle and heated, for example, in a vacuum atmosphere to function as molecular sieve By applying the above heat energy, the moisture adsorbed by the desiccant can be released and reused.

  According to the heat exchanger of the above 6), since a space can be provided between the liquid receiver and the first header tank, heat transfer from the refrigerant in the first header tank to the refrigerant in the liquid receiver is performed. Can be prevented. Therefore, it is possible to prevent the refrigerant in the liquid receiver from being reheated.

  According to the heat exchanger of 7), it is possible to effectively prevent the occurrence of brazing failure when the second reduced diameter portion of the receiver body is brazed to the receiver support member.

  According to the heat exchanger of 8) above, the adsorbed moisture can be released by heating to the brazing temperature at the time of manufacturing the heat exchange tube. Moreover, the performance does not deteriorate even when moisture adsorption and moisture release by heating are repeated. Moreover, when the lubricating oil of a compressor is mixed in the refrigerant | coolant used for a refrigerating cycle, it becomes possible to adsorb | suck only a water | moisture content without adsorbing lubricating oil.

  According to the above method 9), both the header tank and the heat exchange pipe, the heat exchange pipe and the fin, the first header tank and the liquid receiver body, and the liquid receiver body, the partition member and the cap are brazed at the same time. Therefore, unlike the integrated heat exchanger described in Patent Document 1, it is not necessary to screw the receiver, and the manufacturing operation becomes relatively simple. Moreover, the moisture adsorbed on the desiccant can be removed simultaneously with the brazing.

  According to the method of 10), the header tank and the heat exchange pipe, the heat exchange pipe and the fin, the first header tank and the liquid receiver body, and the liquid receiver body and the cap are simultaneously brazed. Therefore, unlike the integrated heat exchanger described in Patent Document 1, it is not necessary to screw the receiver, and the manufacturing operation becomes relatively simple. Moreover, the moisture adsorbed on the desiccant can be removed simultaneously with the brazing.

  According to the above method 11), when the receiver body is brazed to the receiver support member, moisture adsorbed on the desiccant can be removed simultaneously with brazing.

  Embodiments of the present invention will be described below with reference to the drawings. Throughout the drawings, the same parts and the same parts are denoted by the same reference numerals, and redundant description is omitted.

  In the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum. In the following description, the downstream side in the ventilation direction (the back side in FIG. 1, the upper side in FIGS. 2 and 6) is referred to as the front, and the opposite side is referred to as the rear.

Embodiment 1
This embodiment is shown in FIGS. 1 to 4, and the present invention is an integrated heat exchanger in which a condensing part having a condenser function and a supercooling part having a supercooler function are integrated. It is applied.

  1 and 2 show the overall configuration of the integrated heat exchanger, and FIGS. 3 and 4 show the configuration of the main part thereof.

  In FIG. 1, an integrated heat exchanger (1) includes a pair of left and right aluminum header tanks (2) (3) and a pair of header tanks (2) (3 ) And a plurality of flat aluminum heat exchange tubes (4) arranged in parallel in the vertical direction and having both left and right ends connected to both header tanks (2) and (3) by brazing. The aluminum corrugated fin (5) placed between the adjacent heat exchange pipes (4) and brazed to the heat exchange pipe (4), and fixed directly by brazing to the left header tank (2). And a liquid receiver (6). Hereinafter, the left header tank (2) is referred to as a first header tank, and the right header tank (3) is referred to as a second header tank. An aluminum side plate (8) is disposed above the heat exchange pipe (4) at the upper end and below the heat exchange pipe (4) at the lower end, respectively, spaced apart from the heat exchange pipe (4). An aluminum corrugated fin (5) is also disposed between 8) and the heat exchange pipe (4) and brazed to the side plate (8) and the heat exchange pipe (4).

  A heat exchange core portion (7) is formed by the heat exchange pipe (4) and the corrugated fin (5). As shown in FIG. 2, the heat exchange core portion (7) is a straight line extending in the left-right direction when seen from the plane. The center line of the receiver body (17), which will be described later, of the header tanks (2) (3) and the receiver (6) is the center in the ventilation direction at the left and right ends of the heat exchange core (7) It is located on an extension line that extends the line outward in the left-right direction. In this case, in manufacturing the entire integrated heat exchanger (1), when brazing all the parts together, the receiver body (17) can be temporarily fixed using a jig having a relatively simple configuration. This will lead to simplification of the manufacturing process.

  Both header tanks (2) and (3) are formed by forming an aluminum brazing sheet having a brazing filler metal layer on both sides into a cylindrical shape and brazing the butt edges, and (2A) (3A), It consists of closing members (2B) (3B) for closing the upper and lower end openings of the main bodies (2A) (3A). Further, the heat exchange tube (4) is formed of an aluminum extruded profile that is an aluminum bare material, and the corrugated fin (5) is formed of an aluminum brazing sheet having brazing material layers on both sides. The heat exchange tube (4) may be formed by bending an aluminum brazing sheet having a brazing filler metal layer on both sides and brazing a required portion.

  The header tanks (2) and (3) of the integrated heat exchanger (1) are partitioned vertically by an aluminum partition plate (12) at the same height at the bottom, thereby allowing a gas-phase refrigerant. A condenser (10) having a condenser function to condense the liquid into a liquid phase, and a supercooler for supercooling the liquid refrigerant condensed in the condenser (10) to a temperature about 5 to 15 ° C. lower than the condensation temperature And the supercooling section (11) having the above functions are provided integrally in the vertical direction in the same vertical plane.

  Here, the upper part of the first header tank (2) above the partition plate (12) is the condensing part left header part (2a), and the lower part is the supercooling part left header part (2b) and the second header tank. The upper part of the partition plate (12) in (3) is referred to as a condenser right header part (3a), and the lower part is referred to as a supercooling part right header part (3b).

  The left portion of the first header tank (2) is formed with a recess (9) extending in the vertical direction and having an inner peripheral surface of a cylindrical surface. The condensing portion left header on the bottom wall of the recess (9) A refrigerant outlet (13) is formed at a portion corresponding to the lower end portion of the portion (2a), and a refrigerant inlet (14) is formed at a portion corresponding to the upper end portion of the supercooling portion left header portion (2b). (See FIGS. 3 and 4).

  A refrigerant inlet member (15) is brazed to the upper end of the condensing unit right header (3a) so as to communicate with the condensing unit right header (3a). Further, the refrigerant outlet member (16) is brazed to the supercooling portion right header portion (3b) so as to communicate with the supercooling portion right header portion (3b).

  In the condensing unit (10), a first aluminum partition plate is provided in the middle of the concentrating unit right header unit (3a) in the height direction, and the lower part of the condensing unit first header unit (2a) is also provided. Inside the second partition plate made of aluminum, the condensing part (10) has a portion above the first partition plate, a portion between both partition plates, and a portion below the second partition plate, respectively. There may be provided a passage group composed of heat exchange tubes (4) arranged continuously in the vertical direction. In this case, the number of heat exchange tubes (4) constituting each passage group decreases sequentially from the top. Further, the flow direction of the refrigerant in all the heat exchange tubes (4) constituting each passage group is the same, and the flow direction of the refrigerant in the heat exchange tubes (4) of the two adjacent passage groups is different. Yes.

  As shown in FIG. 3 and FIG. 4, the liquid receiver (6) includes an aluminum bare cylindrical liquid receiver body (17) extending in the vertical direction and having both upper and lower ends open, and a liquid receiver body (17). An aluminum cap (18) that closes the upper and lower ends of the receiver, and a receiver body (17) that are spaced apart in the vertical direction, and that there are a plurality of receiver bodies (17), three here. A plurality of chambers (17A), (17B) and (17C), in this case, were placed in a chamber (17B) formed between two upper and lower aluminum partition members (19) and the upper and lower partition members (19). A desiccant (21), a strainer (22) that prevents the desiccant (21) from flowing out of the chamber (17B) of the receiver body (17), and a supercooling section from the receiver body (17). And a strainer (23) for preventing foreign matters and desiccant (21) from flowing into the left header portion (2b).

  The liquid receiver main body (17) is formed of an aluminum bare material, and the first wall of the liquid receiver body (17) is aligned with the refrigerant outlet (13) and the refrigerant inlet (14) of the first header tank (2). And the 2nd communicating port (24) (25) is formed in the up-down direction at intervals. The receiver body (17) has a refrigerant outlet (13) on the outer peripheral surface of the peripheral wall of the first header tank (2) at a portion around the two communication ports (24) and (25) on the outer peripheral surface of the peripheral wall. And it is inserted into the recess (9) of the first header tank (2) and brazed to the inner peripheral surface of the recess (9) so as to be brazed to the peripheral portion of the refrigerant inlet (14). Yes.

  The cap (18) is made of an aluminum brazing sheet having a brazing filler metal layer on both sides, and a cylindrical portion integrally formed on the peripheral edge thereof is brazed to the inner peripheral surface of the peripheral wall of the receiver body (17).

  The partition member (19) is formed of a multi-hole plate made of an aluminum brazing sheet having a brazing filler metal layer on both sides, and a cylindrical portion formed integrally with the peripheral portion thereof is provided inside the peripheral wall of the receiver body (17). It is brazed to the circumference. The upper partition member (19) and the upper cap (18), and the lower partition member (19) and the lower cap (18) are spaced from each other, thereby forming upper and lower chambers (17A) and (17B). Has been.

  The desiccant (21) here consists of a synthetic zeolite with a pore size of 3-5 angstroms.

  The strainer (22) that prevents the desiccant (21) from flowing out of the chamber (17B) of the receiver body (17) is a material that maintains a solid phase in a temperature range of 650 ° C. or lower, here stainless steel. And is arranged so as to cover the lower surface of the upper partition member (19) and the upper surface of the lower partition member (19). The strainer (23) that prevents the outflow of foreign matter and desiccant (21) from the receiver body (17) into the supercooling part left header part (2b) is in a solid state within a temperature range of 650 ° C or lower. Is maintained in a frame (26) made of an aluminum brazing sheet made of stainless steel and having a brazing filler metal layer on both sides, and the frame (26) is connected to the inner periphery of the receiver body (17). The surface of the first header tank (2) is brazed to a portion around the second communication port (25) leading to the refrigerant inlet (14), whereby the strainer (23) is brazed to the second communication port (25). Covering.

  Next, a method for manufacturing the integrated heat exchanger (1) will be described.

  First, a pair of main bodies (2A) (3A) for header tanks (2) and (3) formed by molding aluminum brazing sheets with brazing filler metal layers on both sides, and each main body (2A) (3A) Closing members (2B) (3B), a plurality of heat exchange tubes (4), a plurality of corrugated fins (5), a pair of side plates (8), and a pair of partitions A plate (12), a receiver body (17), a pair of caps (18), a pair of partition members (19), a desiccant (21), and strainers (22) (23) prepare. A recess (9), a refrigerant outlet (13), and a refrigerant inlet (14) are formed in the peripheral wall of the main body (2A) for the first header tank (2). The first and second communication ports (24) and (25) are formed in the peripheral wall of the liquid receiver body (17).

  Next, the main bodies (2A) and (3A) for the header tanks (2) and (3) are arranged at intervals in the left-right direction, and the closing members (2B) and (3B) are arranged at both upper and lower ends of the main body, and further partitioned. Place the plate (12). In addition, heat exchange tubes (4) and corrugated fins (5) are alternately arranged between the two bodies (2A) (3A) so that the corrugated fins (5) are located at both upper and lower ends, and further, corrugated fins ( 5) Place the side plate (8) on the outside in the vertical direction.

  In addition, both partition members (19) are disposed in the receiver body (17) so that three chambers (17A), (17B), and (17C) are formed in the receiver body (17). A desiccant (21) is disposed between the partition members (19). Also, in the receiver body (17), the desiccant (21) from the chamber (17B) is prevented from flowing out, and the foreign material and desiccant (21) from the supercooler left header (2b) are prevented from flowing out. Strainers (22) and (23) to be placed are arranged. Further, caps (18) are arranged at both upper and lower ends of the receiver body (17).

  Next, the two communication ports (24), (25) of the receiver body (17), the refrigerant outlet (13) and the refrigerant inlet (14) of the main body (2A) for the first header tank (2) are provided. The receiver body (17) is arranged along the body (2A) so as to match. Then, all members are temporarily fixed with a jig.

  Thereafter, the temporary fixing body is heated to the brazing temperature, both the main body (2A) (3A) and the closing member (2B) (3B) are brazed, and the partition plate (12) is fixed to the main body (2A) (3A). To form both header tanks (2) and (3), and further to both header tanks (2) and (3), heat exchange pipe (4), heat exchange pipe (4) and corrugated fin (5), corrugated Fin (5) and side plate (8), first header tank (2) and receiver body (17), receiver body (17), both caps (18), partition members (19), and receiver The liquid body (17) and the frame (26) of the strainer (23) are brazed simultaneously. Simultaneously with this brazing, the moisture adsorbed on the desiccant (21) is removed. In this way, the integrated heat exchanger (1) is manufactured.

  The integrated heat exchanger (1) constitutes a refrigeration cycle together with a compressor, an expansion valve (decompressor) and an evaporator, and is mounted on a vehicle as a car air conditioner.

  Then, the high-temperature and high-pressure gaseous refrigerant compressed by the compressor flows into the condenser right header part (3a) through the refrigerant inlet member (15), and enters the heat exchange pipe (4) of the condenser part (10). And flows into the condenser left header part (2a), flows into the receiver (6) through the refrigerant outlet (13) and the first communication port (24), After the foreign matter and moisture are removed, it flows into the supercooling part left header part (2b) through the second communication port (25) and the refrigerant inlet (14), and passes through the refrigerant circulation pipe (4) to the right 5 to 15 ° C. while flowing into the subcooling section, flows into the right subcooling section header (3b), flows out through the refrigerant outlet member (16), and is sent to the evaporator through the expansion valve.

Embodiment 2
This embodiment is shown in FIG.

  In the case of the integrated heat exchanger (30) of this embodiment, the partition member (19) and the partition members (17) as in Embodiment 1 are placed in the receiver body (17) of the receiver (31). The desiccant (21) and the strainer (22) between 19) are not arranged, and the desiccant-containing bag (32) containing the desiccant (21) is arranged. The desiccant-containing bag (32) is made of a material that maintains a solid phase in a temperature range of 650 ° C. or less, here stainless steel, and has a size that prevents the desiccant (21) from passing through. It is formed by the mesh made.

  Other configurations are the same as those of the integrated heat exchanger (1) of the first embodiment.

  The manufacturing method of the integrated heat exchanger (30) is, before brazing, in the receiver body (17) both partition members (19), desiccant (21) between both partition members (19) and strainer ( The manufacturing method of the integrated heat exchanger (1) of Embodiment 1 except that the desiccant-containing bag (32) containing the desiccant (21) is arranged instead of arranging the desiccant (21). The same.

  In the first and second embodiments, instead of the heat exchange core portion (7) having a straight shape extending in the left-right direction when viewed from the plane, as shown in FIG. 6, the left and right end portions of the heat exchange core portion (7) However, you may incline in the ventilation direction upstream (rear side). That is, the left and right ends of the heat exchange pipe (4), the corrugated fin (5), and the side plate (8) are bent so as to incline upstream in the ventilation direction. Also in this case, the center line of the header body (17) of both header tanks (2) (3) and the receiver (6) is the ventilation of the inclined part at the left and right ends of the heat exchange core part (7). It is located on an extension line extending the center line of the direction outward in the left-right direction. In this case, when mounted on a vehicle such as an automobile, interference with the header portion of the radiator heat exchanger can be prevented. Further, since the left and right end portions are inclined with respect to the ventilation grill on the front surface of the vehicle, the ventilation can be effectively performed, and the heat exchange performance is improved.

Embodiment 3
This embodiment is shown in FIG.

  In the case of the integrated heat exchanger (40) of this embodiment, the liquid receiver support member (41) is brazed to the outer surface of the first header tank (2), and the liquid receiver support member (41) receives the liquid. The vessel (42) is brazed.

  The receiver support member (41) is made of an aluminum bare material, and has a stepped portion consisting of a small diameter portion (43b) extending downward from the upper surface thereof and continuing to the lower end of the large diameter portion (43a) and the large diameter portion (43a). The first hole (44) that passes through the bottomed hole (43), the right side and the large diameter part (43a) inner surface of the stepped bottomed hole (43), the right side and the stepped bottomed hole ( 43) has a second hole (45) that passes through the inner peripheral surface of the lower end portion of the small diameter portion (43b). A portion around the first and second holes (44), (45) on the right side of the receiver support member (41) is a refrigerant outlet (13 on the outer peripheral surface of the peripheral wall of the first header tank (2). ) And a peripheral wall of the first header tank (2) so as to be brazed to a portion around the refrigerant inlet (14).

  The liquid receiver (42) is formed of an aluminum cylindrical liquid receiver body (46) whose upper end is closed and whose lower end is open, and a multi-hole plate that is fixed to the upper part of the receiver body (46). A partition member (47), a desiccant (21) placed in a chamber (48) above the partition member (47) in the receiver body (46), and an upper surface of the partition member (47). A strainer (22) disposed so as to cover and prevent the desiccant (21) from flowing out of the chamber (48) and a lower end opening of the liquid receiver body (46) so as to cover and receive the lower end opening. A desiccant (21) and a strainer (49) for preventing the outflow of foreign matter from the liquid body (46) to the first header tank (2) are provided.

  The liquid receiver body (46) is formed of an aluminum bare material, and the lower end of the liquid receiver body (46) is a first portion in the large diameter portion (43a) of the stepped bottomed hole (43) of the liquid receiver support member (41). A first reduced diameter portion (51) inserted into a portion above the hole (44), and a tapered portion connected to the lower end of the first reduced diameter portion (51) and gradually reduced in diameter downward. (52) and a second reduced diameter portion (53) which is connected to the lower end of the tapered portion (52) and is fitted into the small diameter portion (43b) of the stepped bottomed hole (43). A first communication port (54) communicating with the refrigerant outlet (13) of the first header tank (2) is formed in the taper portion (52). The lower end opening of the second reduced diameter portion (53) is a second communication port (55) that communicates with the refrigerant inlet (14) of the first header tank (2). The first reduced diameter portion (51) is inside the large diameter portion (43a) of the stepped bottom hole (43) of the receiver support member (41), and the second reduced diameter portion (53) is the small diameter portion ( 43b) In the state of being fitted in each, the portion around the stepped bottom hole (43) on the upper surface of the receiver support member (41) and the outer peripheral surface of the peripheral wall of the receiver body (46) are brazed. Has been. In this state, the portion surrounding the tapered portion (52) in the lower portion of the large-diameter portion (43a) of the stepped bottomed hole (43) in the receiver support member (41) and the first hole (44) A first refrigerant flow passage (56) is formed through the refrigerant outlet (13) of the first header tank (2) and the first communication port (54) of the receiver body (46), and has a stepped bottomed hole. The refrigerant inlet (14) of the first header tank (2) and the second communication port (55) of the receiver body (46) are provided by the lower part in the small diameter part (43b) of the (43) and the second hole (45). ) Is formed through the second refrigerant flow path (57).

  Here, the wall thickness of the portion around the large-diameter portion (43a) of the stepped bottomed hole (43) in the receiver support member (41) is the first reduced diameter portion of the receiver body (46) ( It is less than 2.5 times the wall thickness of 51).

  The partition member (47) is formed of a multi-hole plate made of an aluminum bare material, and a downward cylindrical portion formed integrally with the peripheral portion of the partition member (47) is an inward formed on the peripheral wall of the receiver body (46). The liquid receiver body (46) is fixed by engaging with the protrusion (59).

  The strainer (49), which prevents the desiccant (21) and foreign matter from flowing out from the receiver body (46) into the first header tank (2), has a cylindrical shape with an open lower end and a closed upper end. A ring (58) is fixed to the lower end of the ring. The strainer (49) and the ring (58) are made of a material that maintains a solid state in a temperature range of 650 ° C. or lower, here, stainless steel. The ring (58) is press-fitted into the upper end portion of the second reduced diameter portion (53) of the liquid receiver body (46), thereby covering the lower end opening of the liquid receiver body (46).

  Other configurations are the same as those of the integrated heat exchanger (1) of the first embodiment.

  The manufacturing method of the integrated heat exchanger (40) is as follows.

  First, both main bodies (2A) (3A) for both header tanks (2) (3), closure members (2B) (3B), heat exchange tubes (4), corrugated fins (5), side plates (8) and After the partition plate (12) is arranged in the same manner as in the first embodiment, the openings to the right side of the two holes (44) and (45) and the refrigerant flow of the main body (2A) for the first header tank (2) The liquid receiver support member (41) is arranged along the main body (2A) so that the outlet (13) and the refrigerant inflow port (14) match.

  On the other hand, a cylindrical receiver body (46), a partition member (47), a desiccant (21), and a strainer (22) (49) that are closed at the upper end and open at the lower end and have the same diameter over the entire length. The desiccant (21) is placed in the upper end of the receiver body (46), and the strainer (22) and the partition member (47) are arranged below the receiver body (46). The partition member (47) is fixed in the liquid receiver main body (46) by deforming the peripheral wall to form the inward protruding portion (59).

  Next, in a state where the strainer (49) is disposed in the liquid receiver body (46), a first reduced diameter portion (51), a taper portion (52), and a second portion are formed at the lower end portion of the liquid receiver body (46). A reduced diameter portion (53), a first communication port (54) is formed in the tapered portion (52), and a lower end opening of the second reduced diameter portion (53) is a second communication port (55); The ring (58) at the lower end of the strainer (49) is fixed in the upper end of the second reduced diameter portion (55).

  Next, the second reduced diameter portion (53) of the receiver body (46) is fitted into the small diameter portion (43b) of the stepped bottom hole (43) of the receiver support member (41), and the first Fit the reduced diameter part (51) into the upper part of the large diameter part (43a) of the stepped bottomed hole (43) above the first hole (44) for both header tanks (2) and (3) Both body (2A) (3A), closure member (2B) (3B), heat exchange pipe (4), corrugated fin (5), side plate (8), partition plate (12), receiver support member ( 41) and the receiver body (46) are temporarily fixed with a jig.

  Next, the temporary fixing body is heated to the brazing temperature, both the main body (2A) (3A) and the closing member (2B) (3B) are brazed, and the partition plate (12) is fixed to the main body (2A) (3A). To form both header tanks (2) and (3), and further to both header tanks (2) and (3), heat exchange pipe (4), heat exchange pipe (4) and corrugated fin (5), corrugated Around the stepped bottomed hole (41) on the upper surface of the fin (5) and side plate (8), the first header tank (2), the receiver support member (41), and the receiver support member (41) And the outer peripheral surface of the peripheral wall of the receiver body (46) are brazed at the same time, and moisture adsorbed on the desiccant (21) is removed. Thus, the integrated heat exchanger (40) is manufactured.

  In the above three embodiments, the case where the heat exchanger according to the present invention is applied to an integrated heat exchanger in which the condensing unit and the supercooling unit are integrated has been described. It can also be applied to a single capacitor separated from the supercooler.

  The heat exchanger of the present invention is suitably used for, for example, a refrigeration cycle constituting a car air conditioner.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially omitted front view showing a first embodiment of an integrated heat exchanger to which a heat exchanger according to the present invention is applied. It is a top view of the integrated heat exchanger of FIG. It is the vertical sectional view seen from the front which expands and shows the principal part of the integrated heat exchanger of Drawing 1. It is an AA line expanded sectional view of FIG. It is a figure equivalent to FIG. 3 which shows Embodiment 2 of the integrated heat exchanger to which the heat exchanger by this invention is applied. It is a top view which shows the modification of the heat exchange core part of the integrated heat exchanger of Embodiment 1 and 2. It is a figure equivalent to FIG. 3 which shows Embodiment 3 of the integrated heat exchanger to which the heat exchanger by this invention is applied.

Claims (11)

A pair of header tanks extending in the vertical direction spaced apart from each other, and a plurality of header tanks arranged in parallel in the vertical direction between the header tanks and having both ends connected to the header tanks, respectively. In a heat exchanger comprising a heat exchange pipe, fins arranged between adjacent heat exchange pipes, and a liquid receiver fixed to the first header tank,
The first header tank has a refrigerant outlet and a refrigerant inlet, the liquid receiver has first and second communication ports, the first communication port serves as the refrigerant outlet, and the second communication port. A heat exchanger in which the liquid receiver is directly or indirectly metal-bonded to the first header tank in a state where the ports communicate with the refrigerant inflow ports. A liquid receiver body that extends in the vertical direction and has a cylindrical receiver body that is open at both upper and lower ends, a cap that closes the upper and lower ends of the receiver body, and a receiver body that is disposed in the receiver body A partition member that divides the interior into a plurality of chambers, and a desiccant placed in one of the chambers formed in the receiver body by the partition member,
First and second communication ports are formed in the peripheral wall of the liquid receiver body, and a portion around the two communication ports on the peripheral wall outer peripheral surface of the receiver body is a refrigerant outlet on the peripheral wall outer surface of the first header tank and The receiver body and the first header tank are brazed so as to be brazed to the portion around the refrigerant inlet, both caps are brazed to the upper and lower ends of the receiver body, and the partition member is The heat exchanger according to claim 1, wherein the heat exchanger is made of a multi-hole plate and its peripheral edge is brazed to the inner peripheral surface of the peripheral wall of the receiver body. The liquid receiver is formed by a cylindrical liquid receiver body extending in the vertical direction and having both upper and lower ends opened, a cap for closing the upper and lower ends of the liquid receiver body, and a mesh, and disposed in the liquid receiver body. A desiccant containing bag and a desiccant contained in the desiccant containing bag,
First and second communication ports are formed in the peripheral wall of the liquid receiver body, and a portion around the two communication ports on the peripheral wall outer peripheral surface of the receiver body is a refrigerant outlet on the peripheral wall outer surface of the first header tank and The receiver body and the first header tank are brazed so as to be brazed to the portion around the refrigerant inlet, and both caps are brazed to the upper and lower ends of the receiver body, respectively, and the desiccant is contained. The heat exchanger according to claim 1, wherein the meshes forming the bag are sized so that the desiccant does not pass therethrough. The heat exchanger according to claim 3, wherein the mesh is made of a material that maintains a solid phase in a temperature range of 650 ° C or lower. The liquid receiver support member is metal-bonded to the outer surface of the first header tank, and the liquid receiver is metal-bonded to the liquid receiver support member, and the refrigerant outlet of the first header tank is connected to the liquid receiver support member. And a first communication port of the liquid receiver, and first and second refrigerant flow passages that respectively connect the refrigerant inlet of the first header tank and the second communication port of the liquid receiver. The described heat exchanger. The receiver support member extends downward from its upper surface, and has a stepped bottom hole consisting of a large diameter portion and a small diameter portion connected to the lower end of the large diameter portion, and a large diameter of the outer surface and the stepped bottom hole. A first hole that passes through the inside of the part, and a second hole that passes through the outside surface and the inside of the small diameter part of the stepped bottomed hole,
The liquid receiver has a cylindrical liquid receiver body whose upper end is closed and whose lower end is open, a partition member made of a multi-hole plate and fixed to the upper part of the liquid receiver body, and the liquid receiver body. A desiccant placed in the room above the partition member,
A first diameter-reduced portion that is fitted into a lower portion of the receiver body in a portion above the first hole in the large-diameter portion of the stepped bottomed hole of the receiver support member; A tapered portion continuous with the lower end of the diameter portion and gradually reduced in diameter downward, and a second reduced diameter portion continuous with the lower end of the tapered portion and fitted into the small diameter portion of the stepped bottomed hole, A first communication port that communicates with the refrigerant outlet of the first header tank is formed in the tapered portion, and a lower end opening of the second reduced diameter portion serves as a second communication port that communicates with the refrigerant inlet of the first header tank,
With the first reduced diameter portion of the receiver body inserted into the large diameter portion of the stepped bottomed hole of the receiver support member, the second reduced diameter portion is inserted into the small diameter portion of the receiver support member. A portion around the stepped bottomed hole on the upper surface and the outer peripheral surface of the peripheral wall of the receiver body are brazed, and a portion around the first and second holes on the outer surface of the receiver support member is the first portion. The outer surface of the receiver support member and the peripheral wall of the first header tank are brazed so as to be brazed to the refrigerant outlet and the peripheral portion of the refrigerant inlet on the outer peripheral surface of the peripheral wall of the header tank,
A first refrigerant flow passage is formed by the lower portion and the first hole in the large-diameter portion of the stepped bottomed hole in the receiver support member, and the second and second holes by the lower portion and the second hole in the small-diameter portion of the stepped bottomed hole. The heat exchanger according to claim 5, wherein a refrigerant flow passage is formed. The thickness of the portion around the large-diameter portion of the stepped bottomed hole in the receiver support member is 2.5 times or less the thickness of the peripheral wall of the first reduced-diameter portion in the receiver body. Item 7. The heat exchanger according to item 6. The heat exchanger according to claim 2, 3 or 6, wherein the desiccant is made of synthetic zeolite, and the pore diameter of the synthetic zeolite is 3 to 5 angstroms. A method for producing a heat exchanger according to claim 2, comprising:
A pair of header tanks, a plurality of heat exchange tubes, a plurality of fins, a cylindrical liquid receiver body extending in the vertical direction and having upper and lower ends opened, and a cap for closing the upper and lower ends of the liquid receiver body Preparing a partition member that partitions the receiver body into a plurality of chambers, and a desiccant;
Forming a refrigerant outlet and a refrigerant inlet in the first header tank;
Forming first and second communication ports in the peripheral wall of the receiver body;
Both header tanks are spaced apart from each other, and heat exchange tubes and fins are alternately disposed between the header tanks.
Disposing the partition member in the receiver body so as to form a plurality of chambers in the receiver body;
Placing a desiccant in any one of the chambers of the receiver body;
Placing caps on the top and bottom ends of the receiver body,
Disposing the receiver body so that the two communication ports of the receiver body and the refrigerant outlet and the refrigerant inlet of the first header tank match.
Temporarily fix all members with a jig,
The temporary fixing body is heated to a brazing temperature, and both the header tank and the heat exchange pipe, the heat exchange pipe and the fin, the first header tank and the receiver body, and the receiver body, the partition member and the cap are brazed at the same time. And a method of manufacturing a heat exchanger including removing moisture adsorbed on the desiccant. A method of manufacturing a heat exchanger according to claim 3,
A pair of header tanks, a plurality of heat exchange tubes, a plurality of fins, a cylindrical liquid receiver body extending in the vertical direction and having upper and lower ends opened, and a cap for closing the upper and lower ends of the liquid receiver body Preparing a desiccant-containing bag formed of a mesh and containing a desiccant;
Forming a refrigerant outlet and a refrigerant inlet in the first header tank;
Forming first and second communication ports in the peripheral wall of the receiver body;
Both header tanks are spaced apart from each other, and heat exchange tubes and fins are alternately disposed between the header tanks.
Putting a desiccant-containing bag in the receiver body,
Placing caps on the top and bottom ends of the receiver body,
Disposing the receiver body so that the two communication ports of the receiver body and the refrigerant outlet and the refrigerant inlet of the first header tank match.
Temporarily fix all members with a jig,
The temporary fixing body is heated to a brazing temperature, and both the header tank and the heat exchange pipe, the heat exchange pipe and the fin, the first header tank and the receiver body, and the receiver body and the cap are brazed at the same time, A method for producing a heat exchanger, comprising removing moisture adsorbed on a desiccant. A method for producing the heat exchanger according to claim 6, comprising:
A pair of header tanks, a plurality of heat exchange tubes, a plurality of fins, a tubular receiver body extending in the vertical direction and having an upper end closed and a lower end opened, a receiver support member, Providing a partition member disposed in the upper part of the liquid container body and a desiccant;
While placing the desiccant in the upper end of the receiver body, placing the partition member below it, fixing the partition member in the receiver body by deforming the peripheral wall of the receiver body,
The lower end portion of the liquid receiver body has a first reduced diameter portion, a tapered portion continuous with the lower end of the first reduced diameter portion and gradually reduced in diameter downward, and a second continuous with the lower end of the tapered portion. A first communication port is formed in the tapered portion, and a lower end opening of the second reduced diameter portion is used as a second communication port.
A stepped bottom hole consisting of a small diameter portion extending downward from the upper surface of the receiver support member and continuing to the lower end of the large diameter portion and the large diameter portion, and a large diameter of the outer surface and the stepped bottom hole. Forming a first hole to be passed through the inside of the part and a second hole to be passed through the outside surface and the inside of the small diameter part of the stepped bottomed hole;
Both header tanks are spaced apart from each other, and heat exchange tubes and fins are alternately disposed between the header tanks.
Disposing the liquid receiver support member so that the openings to the outer surfaces of the first and second holes of the liquid receiver support member coincide with the refrigerant outlet and the refrigerant inlet of the first header tank;
The second reduced diameter portion of the receiver body is fitted into the small diameter portion of the stepped bottomed hole of the liquid receiving support member, and the first reduced diameter portion is inserted from the first hole in the large diameter portion of the stepped bottomed hole. Fit into the upper part,
Disposing a ring-shaped brazing material between the portion around the stepped bottomed hole on the upper surface of the receiver support member and the outer peripheral surface of the peripheral wall of the receiver body;
Temporarily fixing both header tanks, heat exchange tubes, fins, receiver support member and receiver body with a jig;
The temporary fixing body is heated to a brazing temperature, and both the header tank and the heat exchange pipe, the heat exchange pipe and the fin, the first header tank and the liquid receiver support member, and the liquid receiver support member and the liquid receiver body are simultaneously A method of manufacturing a heat exchanger that includes brazing and removing moisture adsorbed on a desiccant.

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