JP4931481B2 - Heat exchanger and manufacturing method thereof - Google Patents

Description

  The present invention relates to a heat exchanger and a manufacturing method thereof, and more particularly to a heat exchanger suitably used as an evaporator of a car air conditioner that is a refrigeration cycle mounted on an automobile, for example, and a manufacturing method thereof.

  In this specification and claims, the downstream side (direction indicated by arrow X in FIG. 1) of the air flowing through the ventilation gap between adjacent heat exchange tubes is referred to as the front, and the opposite side is referred to as the rear. The top and bottom and the left and right in FIG. In this specification, the term “aluminum” includes aluminum alloys in addition to pure aluminum.

  Conventionally, as an evaporator for a car air conditioner, a refrigerant inlet / outlet header tank having a refrigerant inlet header portion and a refrigerant outlet header portion arranged side by side in the front-rear direction, and a refrigerant circulation path through the refrigerant inlet header portion and the refrigerant outlet header portion are provided. A refrigerant inlet is formed at one end of the refrigerant inlet header part, a refrigerant outlet is formed at the same end as the refrigerant inlet in the refrigerant outlet header part, and a refrigerant inflow part leading to the refrigerant inlet and a refrigerant outlet part leading to the refrigerant outlet are provided. A joint plate having a refrigerant inlet header section and a refrigerant outlet header section so as to straddle the refrigerant inlet / outlet header tank, and the refrigerant inlet / outlet header tank has a hollow inlet header section main body opened at both ends; A hollow outlet header main body integrated with the inlet header main body and open at both ends, and both header body And a cap that closes both ends of the header body, and a refrigerant inlet is formed in the cap joined to one end of the inlet header body, and one end of the outlet header body. A refrigerant outlet is formed in the cap joined to the cap, and both the caps are integrated via a connecting portion to form an end member, and the refrigerant enters and exits so that the joint plate is prevented from moving in the vertical direction and the front-rear direction. There is known a structure in which a joint plate and an end member of a refrigerant inlet / outlet header tank are joined in a state of being engaged with an end member of a header tank for use (see Patent Document 1).

However, at the time of batch brazing of all the components when manufacturing the evaporator described in Patent Document 1, the joint plate does not move in the left-right direction with respect to the end member of the refrigerant inlet / outlet header tank and does not come off the end member. For example, it is necessary to fix to the end member fixed to the inlet header main body and the outlet header main body by a furnace insertion jig made of stainless steel, for example. Therefore, there is a problem that the manufacturing cost becomes high. Moreover, since the inlet header body and the outlet header body are made of aluminum, the coefficient of thermal expansion is different from that of a stainless steel furnace jig, and thus the manufactured refrigerant inlet / outlet header tank may be warped. is there.
JP 2005-164226 A

  An object of the present invention is to provide a heat exchanger that solves the above-described problems, reduces manufacturing costs, and can reliably prevent warping of the refrigerant inlet / outlet header tank, and a method for manufacturing the same.

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

1) A refrigerant inlet header portion comprising a refrigerant inlet / outlet header tank having a refrigerant inlet header portion and a refrigerant outlet header portion arranged side by side in the front-rear direction, and a refrigerant circulation path through the refrigerant inlet header portion and the refrigerant outlet header portion. A joint plate having a refrigerant inlet formed at one end of the refrigerant outlet, a refrigerant outlet formed at the same end as the refrigerant inlet in the refrigerant outlet header portion, and having a refrigerant inflow portion leading to the refrigerant inlet and a refrigerant outlet portion leading to the refrigerant outlet. as across the inlet header and a refrigerant outlet header, Oite the heat exchanger which is joined to the header tank for coolant and out,
The refrigerant inlet header is composed of a hollow inlet header main body having both ends opened and a cap that is joined to both ends of the inlet header main body and closes both ends of the inlet header main body. A hollow outlet header body having an opening and a cap that is joined to both ends of the outlet header body and closes both ends of the outlet header body, and the refrigerant enters and exits through the inlet header body, the outlet header body, and the cap. A header tank is formed, a refrigerant inlet is formed in a cap joined to one end of the inlet header body, and a refrigerant outlet is formed in a cap joined to one end of the outlet header body. Are integrated through a connecting portion to form an end member ,
A first engaging male part protruding upward is formed at the upper end of the connecting part of the end member, and a second engaging male part protruding downward is formed at the lower end of the connecting part of the end member. A first engaging female portion that protrudes and through which the first engaging male portion is inserted is formed, and a second engaging female portion that protrudes toward the end member and through which the second engaging male portion is inserted is formed in the lower portion. The first engaging male part of the end member is inserted into the first engaging female part of the joint plate from below and engaged with the first engaging female part, and the second engaging male part is A heat exchanger in which the two engaging female parts are inserted from above and engaged with the second engaging female parts, and in this state, the joint plate is joined to the end member of the refrigerant inlet / outlet header tank.

2) The first engaging female part of the joint plate is formed by bending a portion above the through hole formed in the upper part of the joint plate in the front-rear direction to the end member side in a U-shape. The heat exchange according to 1) above, wherein the two engaging female parts are formed by bending a portion below the through hole formed in the lower part of the joint plate in the front-rear direction to the end member side in a U shape. vessel.

3) The first engaging female portion of the joint plate is provided with a slit made of a first portion extending downward from the upper edge of the joint plate and a second portion extending to one of the front and rear sides connected to the lower end of the first portion. And a portion of the joint plate above the second portion of the slit is bent to the end member side and bent to one of the front and rear sides, and the second engaging female portion is formed on the joint plate at its lower edge. A slit consisting of a first portion extending upward from the first portion and a second portion extending to either the front or rear of the first portion, and a portion below the second portion of the slit in the joint plate on the end member side The heat exchanger as described in 1) above, wherein the heat exchanger is formed by bending and bending in either one direction.

4) The first engagement female portion of the joint plate, engaged with the upper end of the connecting portion of the end member, thereby the adapted downward movement of the joint plate is prevented 1) to 3 ) .

5) A refrigerant inlet header portion comprising a refrigerant inlet / outlet header tank having a refrigerant inlet header portion and a refrigerant outlet header portion arranged side by side in the front-rear direction, and a refrigerant circulation path through the refrigerant inlet header portion and the refrigerant outlet header portion. A joint plate having a refrigerant inlet formed at one end of the refrigerant outlet, a refrigerant outlet formed at the same end as the refrigerant inlet in the refrigerant outlet header portion, and having a refrigerant inflow portion leading to the refrigerant inlet and a refrigerant outlet portion leading to the refrigerant outlet. In the heat exchanger joined to the refrigerant inlet / outlet header tank so as to straddle the inlet header part and the refrigerant outlet header part,
The refrigerant inlet header is composed of a hollow inlet header main body having both ends opened and a cap that is joined to both ends of the inlet header main body and closes both ends of the inlet header main body. A hollow outlet header body having an opening and a cap that is joined to both ends of the outlet header body and closes both ends of the outlet header body, and the refrigerant enters and exits through the inlet header body, the outlet header body, and the cap. A header tank is formed, a refrigerant inlet is formed in a cap joined to one end of the inlet header body, and a refrigerant outlet is formed in a cap joined to one end of the outlet header body. Are integrated through a connecting portion to form an end member,
Together with the first engagement male portion projecting upwardly at the upper end of Joy cement plate is formed, the second engagement male portion projecting downward in the lower end is formed, joint plate side at the top of the connecting portion of the end member A second engaging female portion that protrudes toward the end member and is inserted through the first engaging female portion. The first engaging male part of the joint plate is inserted into the first engaging female part of the end member from below and engaged with the first engaging female part, and the second engaging male part is A heat exchanger that is inserted into the second engaging female portion from above and engaged with the second engaging female portion, and in this state, the joint plate is joined to the end member of the refrigerant inlet / outlet header tank.

6) The first engaging female part of the end member is formed by bending a portion above the through hole formed in the upper part of the connecting part of the end member in the front-rear direction to the joint plate side in a U shape. the 5 second female engaging portion is formed by bending a lower portion than the through holes extending in the longitudinal direction formed in the lower portion of the connecting portion of the end member to the joint plate side in a U-shape ) The heat exchanger described.

7) The second engaging female portion of the end member is engaged with the lower end of the joint portion of the joint plate, thereby preventing the downward movement of the joint plate 5) or 6 ) The heat exchanger described.

8) A notch is formed in the lower edge portion of the end member, a convex portion is formed on the lower edge portion of the joint plate that protrudes toward the end member side and fits in the notch of the end member, and the convex portion fits in the notch. Accordingly, the heat exchanger according to any one of 1) to 7) above, in which the movement of the joint plate in the upward and backward directions is prevented.

9) The refrigerant circulation path is disposed at a distance from the refrigerant inlet / outlet header tank, and is opposed to the first intermediate header section and the refrigerant outlet header section facing the refrigerant inlet header section and communicated with the first intermediate header tank. A refrigerant turn header tank having a second intermediate header portion, and a heat exchange core portion formed between the header tanks, the heat exchange core portion being spaced apart in the length direction of the header tanks. It consists of a heat exchange pipe group consisting of a plurality of heat exchange pipes arranged at both ends connected to both header tanks, and fins arranged between adjacent heat exchange pipes. The heat exchange pipe groups are arranged side by side in the ventilation direction, and at least one heat exchange pipe group is provided in each of the refrigerant inlet header part and the first intermediate header part, and the refrigerant outlet header part and the second intermediate header part. Contact A heat exchanger according to any one of the above 1) to 8) which are.

10) A refrigerant inlet header section comprising a refrigerant inlet / outlet header tank having a refrigerant inlet header section and a refrigerant outlet header section arranged side by side in the front-rear direction, and a refrigerant circulation path through the refrigerant inlet header section and the refrigerant outlet header section. A joint plate having a refrigerant inlet formed at one end of the refrigerant outlet, a refrigerant outlet formed at the same end as the refrigerant inlet in the refrigerant outlet header portion, and having a refrigerant inflow portion leading to the refrigerant inlet and a refrigerant outlet portion leading to the refrigerant outlet. The refrigerant inlet / outlet header tank is joined to the refrigerant inlet / outlet header tank so as to straddle the inlet header portion and the refrigerant outlet header portion, and the refrigerant inlet / outlet header tank has a hollow inlet header portion main body opened at both ends, and a hollow outlet header portion. A main body and a cap that is joined to both end portions of both header section main bodies and closes both end openings of both header section main bodies; A refrigerant inlet is formed in the cap joined to one end portion of the main body, and a refrigerant outlet is formed in the cap joined to one end portion of the outlet header main body, and both the caps are integrated via the connecting portion. A method of manufacturing a heat exchanger in which an end member is configured and a joint plate is joined to the end member,
A first engaging male part protruding upward is formed at the upper end of the connecting part of the end member, and a second engaging male part protruding toward the joint plate is formed at the lower end of the connecting part of the end member,
A slit extending in the vertical direction is formed between the refrigerant inflow portion and the refrigerant outflow portion in the joint plate, and a through slit width adjusting hole is formed so as to be connected to the upper and lower end portions of the slit. By bending the upper part of the width adjustment hole and the lower part of the lower slit width adjustment hole in a U-shape toward the end member, the joint plate is shortened in the front-rear direction, so that the end member side A first engaging female portion that projects through the first engaging male portion, and a through hole is formed in the lower portion of the joint plate, and protrudes toward the end member side below the through hole and the second engaging portion. Forming a second engaging female part through which the male part is inserted;
The first engaging male part of the end member is inserted from below into the first engaging female part of the joint plate and engaged with the first engaging female part, and the second engaging male part is inserted into the through hole of the joint plate. Then, the second engaging male part is inserted into the second engaging female part from above and engaged with the second engaging female part. In this state, the joint plate is used as an end member. The manufacturing method of the heat exchanger including joining.

11) A refrigerant inlet header portion including a refrigerant inlet / outlet header tank having a refrigerant inlet header portion and a refrigerant outlet header portion arranged side by side in the front-rear direction, and a refrigerant circulation path through the refrigerant inlet header portion and the refrigerant outlet header portion. A joint plate having a refrigerant inlet formed at one end of the refrigerant outlet, a refrigerant outlet formed at the same end as the refrigerant inlet in the refrigerant outlet header portion, and having a refrigerant inflow portion leading to the refrigerant inlet and a refrigerant outlet portion leading to the refrigerant outlet. The refrigerant inlet / outlet header tank is joined to the refrigerant inlet / outlet header tank so as to straddle the inlet header portion and the refrigerant outlet header portion, and the refrigerant inlet / outlet header tank has a hollow inlet header portion main body opened at both ends, and a hollow outlet header portion. A main body and a cap that is joined to both end portions of both header section main bodies and closes both end openings of both header section main bodies; A refrigerant inlet is formed in the cap joined to one end portion of the main body, and a refrigerant outlet is formed in the cap joined to one end portion of the outlet header main body, and both the caps are integrated via the connecting portion. A method of manufacturing a heat exchanger in which an end member is configured and a joint plate is joined to the end member,
A first engaging male part protruding toward the joint plate is formed at the upper end of the connecting part of the end member, and a second engaging male part protruding toward the joint plate is formed at the lower end of the connecting part of the end member. ,
A slit extending in the vertical direction is formed between the refrigerant inflow portion and the refrigerant outflow portion in the joint plate, and a through slit width adjusting hole is formed so as to be connected to the upper and lower end portions of the slit. By bending the upper part of the width adjustment hole and the lower part of the lower slit width adjustment hole in a U-shape toward the end member, and shortening the joint plate in the front-rear direction, a through hole is formed in the upper part of the joint plate. And forming a first engaging female portion that protrudes to the end member side above the through hole and allows the first engaging male portion to be inserted therethrough, and further, forming a through hole in the lower portion of the joint plate, Forming a second engaging female part projecting to the end member side on the lower side and inserting the second engaging male part;
The first engagement male part of the end member is inserted through the upper through hole of the joint plate and then bent upward, whereby the first engagement male part is inserted into the first engagement female part from below and the first engagement The second engaging male part is inserted into the second engaging female part from above by engaging with the mating female part and bending the second engaging male part through the through hole of the joint plate and then bending downward. A heat exchanger manufacturing method including engaging the second engaging female portion and joining the joint plate to the end member in this state.

12) A refrigerant inlet header portion comprising a refrigerant inlet / outlet header tank having a refrigerant inlet header portion and a refrigerant outlet header portion arranged side by side in the front-rear direction, and a refrigerant circulation path through the refrigerant inlet header portion and the refrigerant outlet header portion. A joint plate having a refrigerant inlet formed at one end of the refrigerant outlet, a refrigerant outlet formed at the same end as the refrigerant inlet in the refrigerant outlet header portion, and having a refrigerant inflow portion leading to the refrigerant inlet and a refrigerant outlet portion leading to the refrigerant outlet. The refrigerant inlet / outlet header tank is joined to the refrigerant inlet / outlet header tank so as to straddle the inlet header portion and the refrigerant outlet header portion, and the refrigerant inlet / outlet header tank has a hollow inlet header portion main body opened at both ends, and a hollow outlet header portion. A main body and a cap that is joined to both end portions of both header section main bodies and closes both end openings of both header section main bodies; A refrigerant inlet is formed in the cap joined to one end portion of the main body, and a refrigerant outlet is formed in the cap joined to one end portion of the outlet header main body, and both the caps are integrated via the connecting portion. A method of manufacturing a heat exchanger in which an end member is configured and a joint plate is joined to the end member,
A first engaging male part protruding upward is formed at the upper end of the connecting part of the end member, and a second engaging male part protruding toward the joint plate is formed at the lower end of the connecting part of the end member,
The joint plate is provided with a first slit consisting of a first portion extending downward from the upper edge thereof and a second portion extending to one of the front and rear sides of the first portion, and the second portion of the first slit in the joint plate. A first engaging female portion that protrudes toward the end member side and is inserted through the first engaging male portion at the upper portion of the joint plate by bending the upper portion to the end member side and bending to the front or rear side. And forming a through hole in a lower portion of the joint plate, a first portion extending upward from a lower edge of the joint plate, and a second portion extending to one of the front and rear and continuing to the through hole. Insert a slit, bend the part of the joint plate below the second part of the second slit to the end member side, and bend it to either the front or back By, forming a second engagement female portion for inserting the and notches on the lower projecting end member side and the second engagement male portion of the joint plate,
The first engaging male part of the end member is inserted into the first engaging female part of the joint plate from below and engaged with the first engaging female part, and the second engaging male part is notched in the joint plate. Then, the second engaging male part is inserted into the second engaging female part from above and engaged with the second engaging female part. In this state, the joint plate is used as an end member. The manufacturing method of the heat exchanger including joining.

13) Any one of the above 10) to 12) in which the first engaging female portion of the joint plate is engaged with the upper end of the connecting portion of the end member, thereby preventing the joint plate from moving downward. A method for producing the heat exchanger according to 1.

14) A refrigerant inlet header section comprising a refrigerant inlet / outlet header tank having a refrigerant inlet header section and a refrigerant outlet header section arranged side by side in the front-rear direction, and a refrigerant circulation path through the refrigerant inlet header section and the refrigerant outlet header section. A joint plate having a refrigerant inlet formed at one end of the refrigerant outlet, a refrigerant outlet formed at the same end as the refrigerant inlet in the refrigerant outlet header portion, and having a refrigerant inflow portion leading to the refrigerant inlet and a refrigerant outlet portion leading to the refrigerant outlet. The refrigerant inlet / outlet header tank is joined to the refrigerant inlet / outlet header tank so as to straddle the inlet header portion and the refrigerant outlet header portion, and the refrigerant inlet / outlet header tank has a hollow inlet header portion main body opened at both ends, and a hollow outlet header portion. A main body and a cap that is joined to both end portions of both header section main bodies and closes both end openings of both header section main bodies; A refrigerant inlet is formed in the cap joined to one end portion of the main body, and a refrigerant outlet is formed in the cap joined to one end portion of the outlet header main body, and both the caps are integrated via the connecting portion. A method of manufacturing a heat exchanger in which an end member is configured and a joint plate is joined to the end member,
Forming a first engaging male part protruding upward at the upper end of the joint plate, and forming a second engaging male part protruding toward the end member at the lower end of the joint plate;
A slit extending in the vertical direction is formed in the connecting portion of the end member, and a penetrating slit width adjusting hole is formed so as to be connected to both the upper and lower end portions of the slit, and more than the upper slit width adjusting hole in the connecting portion of the end member. The upper part and the part below the lower slit width adjustment hole are bent in a U-shape on the joint plate side to shorten the end member in the front-rear direction, so that it protrudes on the joint plate side above the connecting part of the end member. And forming a first engaging female portion through which the first engaging male portion is inserted, further forming a through hole at a lower portion of the connecting portion of the end member, and projecting to the joint plate side below the through hole and the second Forming a second engaging female part for inserting the engaging male part;
The first engaging male part of the joint plate is inserted from below into the first engaging female part of the end member and engaged with the first engaging female part, and the second engaging male part is inserted into the through hole of the end member. Then, the second engaging male part is inserted into the second engaging female part from above and engaged with the second engaging female part. In this state, the joint plate is used as an end member. The manufacturing method of the heat exchanger including joining.

15) The second engaging female portion of the end member is engaged with both side portions of the second engaging male portion at the lower end portion of the joint plate, thereby preventing the joint plate from moving downward 14) The manufacturing method of the heat exchanger of description.

16) A notch is formed in the lower edge of the end member, and a protrusion is formed on the lower edge of the joint plate that protrudes toward the end member and fits into the notch of the end member. The method for manufacturing a heat exchanger according to any one of the above 10) to 15) , wherein the joint plate is prevented from moving in the upward and backward directions by fitting into the joint plate.

According to the heat exchangers 1) to 9) above, the joint plate is engaged with the header tank for refrigerant entry / exit so as to be prevented from moving in the left / right direction, the up / down direction, and the front / rear direction. And the refrigerant inlet header portion and the refrigerant outlet header portion of the refrigerant inlet / outlet tank are joined together, so that the heat exchanger described in Patent Document 1 can be used at the time of batch brazing all the components when manufacturing this heat exchanger. A furnace jig made of stainless steel as in the case of manufacturing is not required. Therefore, the manufacturing cost is reduced. In addition, since no furnace insertion jig is used, it is possible to prevent warping from occurring in the manufactured refrigerant inlet / outlet header tank.

According to the heat exchangers 1) to 8) , the movement of the joint plate in the left-right direction can be prevented relatively easily.

According to the heat exchangers of the above 3) and 7), the joint plate can be prevented from moving downward relatively easily.

According to the heat exchanger of the above 8) , the joint plate can be prevented from moving in the front-rear direction and upward relatively easily.

According to the method for manufacturing a heat exchanger of the above 10) to 16) , the joint plate can be prevented from moving in the left-right direction. No furnace jig made of stainless steel as in the case of manufacturing the heat exchanger according to 1 is required. Therefore, the manufacturing cost is reduced. In addition, since no furnace insertion jig is used, it is possible to prevent warping from occurring in the manufactured refrigerant inlet / outlet header tank.

According to the heat exchanger manufacturing methods of 13) and 15) above, it is possible to relatively easily prevent the joint plate from moving downward.

According to the heat exchanger manufacturing method of the above 16) , it is possible to relatively easily prevent the joint plate from moving forward and backward and upward.

  Embodiments of the present invention will be described below with reference to the drawings. In the embodiment described below, the heat exchanger according to the present invention is applied to an evaporator of a car air conditioner using a chlorofluorocarbon refrigerant.

  1 and 2 show the overall configuration of the evaporator, and FIGS. 3 to 12 show the configuration of the main part of the evaporator.

  As shown in FIGS. 1 to 3, the evaporator (20) is disposed between an aluminum refrigerant inlet / outlet header tank (22) and an aluminum refrigerant turn header tank (23) that are spaced apart in the vertical direction. Is provided with a heat exchange core section (21).

  The refrigerant inlet / outlet tank (22) includes a refrigerant inlet header portion (24) located on the front side (downstream side in the ventilation direction), a refrigerant outlet header portion (25) located on the rear side (upstream side in the ventilation direction), And a connecting portion (26) for connecting and integrating the header portions (24) and (25) to each other. An aluminum refrigerant inlet pipe (27) is connected to the refrigerant inlet header (24) of the refrigerant inlet / outlet tank (22), and an aluminum refrigerant outlet pipe (28) is connected to the refrigerant outlet header (25). Yes.

  The refrigerant turn header tank (23) includes a refrigerant inflow side intermediate header portion (30) (first intermediate header portion) located on the front side and a refrigerant outflow side intermediate header portion (31) (second intermediate point) located on the rear side. Header portion) and a connecting portion (32) for connecting and integrating the header portions (30) and (31) to each other, and the header portions (30) and (31) and the connecting portion (32) provide drainage. A ridge (33) is formed.

  The heat exchange core section (21) includes a plurality of rows of heat exchange pipe groups (35) including a plurality of heat exchange pipes (34) arranged in parallel at intervals in the left-right direction. Are arranged in two rows, and the ventilation gap between adjacent heat exchange pipes (34) of each heat exchange pipe group (35) and the heat exchange pipes (34) at the left and right ends of each heat exchange pipe group (35). Corrugated fins (36) are arranged on the outside and brazed to the heat exchange pipe (34), and further, aluminum side plates (37) are arranged on the outside of the corrugated fins (36) on both left and right ends, respectively. It is composed by brazing to 36). Then, the upper and lower ends of the heat exchange pipe (34) of the front heat exchange pipe group (35) are connected to the refrigerant inlet header part (24) and the refrigerant inflow side intermediate header part (30) to become the forward side refrigerant circulation part. Yes. The upper and lower ends of the heat exchange pipe (34) of the rear heat exchange pipe group (35) are connected to the refrigerant outlet header part (25) and the refrigerant outflow side intermediate header part (31) to form a return side refrigerant circulation part. Yes. Then, the refrigerant inlet header (24) and the refrigerant outlet are formed by the refrigerant inflow side intermediate header (30), the refrigerant outflow side intermediate header (31), and the heat exchange pipe (34) of the front and rear heat exchange pipe groups (35). A refrigerant circulation path is formed through the header section (25).

  The heat exchange pipe (34) is made of a bare material formed of an aluminum extruded profile, and has a wide and flat shape in the front-rear direction, and a plurality of refrigerant passages (34a) extending in the length direction are formed in parallel in the interior. (See FIG. 5). The horizontal cross-sectional shape of the outer surfaces of the front and rear end walls of the heat exchange pipe (34) is an arc shape with the center portion protruding outward. The front heat exchange pipe (34) and the rear heat exchange pipe (34) are arranged to be at the same position in the left-right direction. The front heat exchange pipe (34) communicates with the refrigerant inlet header section (24) and the refrigerant inflow side intermediate header section (30), and the rear heat exchange pipe (34) communicates with the refrigerant outlet header section (25) and It communicates with the refrigerant outflow side intermediate header (31).

  As the heat exchange pipe (34), instead of the one made of an aluminum extruded shape, a pipe in which a plurality of refrigerant passages are formed by inserting inner fins into an aluminum electric sewing pipe may be used. . Also, two flat wall forming parts formed by rolling an aluminum brazing sheet having a brazing filler metal layer on both sides and connected via connecting parts, and the opposite side of the connecting part in each flat wall forming part A side wall forming portion integrally formed in a protruding shape from the side edges of the flat wall forming portion, and a plurality of partition wall forming portions integrally formed in a protruding shape from the two flat wall forming portions at a predetermined interval in the width direction of the flat wall forming portion. It is also possible to use a plate having a partition wall formed by bending a plate with a hairpin shape at the connecting portion, butting the side wall forming portions with each other and brazing each other. In this case, a corrugated fin made of a bare material is used.

  The corrugated fin (36) is formed in a corrugated shape using an aluminum brazing sheet having a brazing filler metal layer on both sides, from the wave top, the wave bottom and the flat horizontal connecting portion connecting the wave top and the wave bottom. Thus, a plurality of louvers are formed in the connecting portion side by side in the front-rear direction. The corrugated fin (36) is shared by the front and rear heat exchange tubes (34) constituting the front and rear heat exchange tube group (35), and the width in the front-rear direction is equal to the front edge of the front heat exchange tube (34). The distance from the rear edge of the rear heat exchange pipe (34) is substantially equal. The wave crest and wave bottom of the corrugated fin (36) are brazed to the front and rear heat exchange tubes. The front edge of the corrugated fin (36) protrudes slightly forward from the front edge of the front heat exchange pipe (34).

  As shown in FIGS. 3 to 5, the refrigerant inlet / outlet header tank (22) is formed of a plate-shaped second tank formed of an aluminum brazing sheet having a brazing filler metal layer on both sides and to which all heat exchange pipes (34) are connected. Formed from an aluminum brazing sheet comprising one member (38), a second member (39) made of a bare material formed from an extruded aluminum material and covering the upper side of the first member (38), and a brazing material layer on both sides And left and right end members (41) and (42) made of aluminum that are joined to both left and right ends of both members (38) and (39) and close both end openings of the hollow body formed by both members (38) and (39). Thus, a long aluminum joint plate (43) is brazed to the outer surface of the right end member (42) so as to straddle the refrigerant inlet header (24) and the refrigerant outlet header (25). A refrigerant inlet pipe (27) and a refrigerant outlet pipe (28) are connected to the joint plate (43).

  The first member (38) includes a first bulging first header forming portion (44) that forms a lower portion of the refrigerant inlet header portion (24) and a lower bulging that forms a lower portion of the refrigerant outlet header portion (25). A second header forming portion (45), a rear edge portion of the first header forming portion (44) and a front edge portion of the second header forming portion (45), and a lower portion of the connecting portion (32) And a connecting wall (46). A plurality of pipe insertion holes (47) that are long in the front-rear direction are formed in both header forming portions (44), (45) at intervals in the left-right direction. The pipe insertion holes (47) of both header forming portions (44) and (45) are at the same position in the left-right direction. The upper end portions of the heat exchange tubes (34) of both the front and rear heat exchange tube groups (35) of the heat exchange core portion (21) are inserted into the tube insertion holes (47) of both header forming portions (44) (45), The first member (38) is brazed to the first member (38) using the brazing material layer of the first member (38), whereby the upper end of the heat exchange pipe (34) of the front heat exchange pipe group (35) is connected to the refrigerant inlet. An upper end portion of the heat exchange pipe (34) of the rear heat exchange pipe group (35) is connected to the header section (24) in communication with the refrigerant outlet header section (25). A plurality of drainage through holes (48) that are long in the left-right direction are formed in the connecting wall (46) at intervals in the left-right direction. In addition, a plurality of fixing through holes (49) are formed in the connecting wall (46) of the first member (50) at intervals in the left-right direction so as to be shifted from the drain through holes (48). Has been.

  The second member (39) includes an upper bulging first header forming part (51) that forms the upper part of the refrigerant inlet header part (24), and an upper bulging that forms the upper part of the refrigerant outlet header part (31). A second header forming part (52) having a shape, a rear edge of the first header forming part (51) and a front edge of the second header forming part (52), and the first member (38) The connecting wall (53) is brazed to the connecting wall (46) to form the upper part of the connecting portion (26). The first header forming part (51) is a horizontal part that integrally connects the lower ends of both front and rear walls (51a) and partitions the refrigerant inlet header part (24) into two upper and lower spaces (24A) and (24B). It has a diversion control wall (51b) in the inlet header section. The second header forming portion (52) integrally connects the lower ends of the front and rear walls (52a) at the same height as the inlet header diversion control wall (51b) and in the refrigerant outlet header portion (25). Is divided into two upper and lower spaces (25A) and (25B).

  A notch (50) is formed from the left end of the flow dividing control wall (51b) in the inlet header portion of the second member (39). In addition, a diversion adjusting hole (60) is formed in a penetrating manner in a portion near the notch (50) and a portion near the right end of the diversion control wall (51b) in the inlet header portion. Further, in the portion excluding the left and right end portions of the rear portion of the outlet header inner flow control wall (52b) of the second member (39), a plurality of oblong refrigerant passage holes (54A) (54B) elongated in the left-right direction. Are formed in a penetrating manner with an interval in the left-right direction. The length of the oval refrigerant through hole (54A) at the center is shorter than the length of the other oval refrigerant through hole (54B) and is located between the adjacent heat exchange tubes (34).

  In the connecting wall (53) of the second member (39), a drainage through hole (55) that is long in the left-right direction is formed at a position matching the drainage through hole (48) of the first member (38). A plurality of protrusions (56) fitted into the fixing through holes (49) are formed at positions corresponding to the fixing through holes (49) of the one member (38). In the first member (38) and the second member (39), the protrusion (56) is inserted into the fixing through hole (49) and caulked so that both members (38) and (39) are temporarily fixed. In the state, using the brazing material layer of the first member (38), the front side edge portions of the first header forming portions (44) and (51) of both members (38) and (39) are connected to each other, and the second header forming portion ( 45) The rear edge portions of (52) and the connecting portions (46) (53) are brazed.

  A hollow inlet header portion main body (240) having both ends opened by the first header forming portion (44) of the first member (38) and the first header forming portion (51) of the second member (39). A hollow outlet header main body (both ends open) by the second header forming portion (45) of the second member (39) and the second header forming portion (52) of the second member (39). 250) is formed.

  The left end member (41) includes a front cap (41a) for closing the left end opening of the inlet header body (240) and a rear cap (41b) for closing the left end opening of the outlet header body (250). 41c). The front cap (41a) of the left end member (41) is integrally formed with a right protrusion (57) that is fitted into the inlet header body (240), and the rear cap (41b) is also provided with an outlet header. The upper right protrusion (58) that fits into the space above the flow dividing control wall (52b) of the head part body (250), and the bottom that fits into the space below the flow dividing control wall (52b). The side right protrusion (59) is integrally formed with a space in the vertical direction. Further, the engaging claws (61) projecting to the right and engaging with both members (38) and (39) on the arc-shaped portions between the front and rear side edges and the upper and lower edges of the left end member (41) Are integrally formed. The left end member (41) is brazed to both members (38) and (39) using its own brazing material layer. Then, the left end opening of the notch (50) of the inlet header diversion control wall (51b) is closed by the front cap (41a) of the left end member (41), thereby the upper and lower spaces (24A) of the inlet header portion (24). ) (24B) is formed at the left end portion thereof with a communication hole (70). Here, the communication hole (70) is formed by closing the left end opening of the notch (50) by the left cap (18), but instead of this, the notch is not formed, and the inside of the inlet header portion is formed. A communication hole may be provided by forming a through hole in the left end portion of the flow dividing control wall (51b).

  The right end member (42) includes a front cap (42a) for closing the right end opening of the inlet header main body (240) and a rear cap (42b) for closing the right end opening of the outlet header main body (250). 42c). The front cap (42a) of the right end member (42) has an upper left protrusion (62) fitted into the space above the flow dividing control wall (51b) of the inlet header body (240), and a flow dividing control. The lower left protrusion (80) fitted into the space below the wall (51b) is integrally formed with a space in the vertical direction, and the rear cap (42b) has an outlet header main body. (250) The upper left protrusion (63) that fits in the space above the flow dividing control wall (52b), and the lower left that fits in the space below the flow dividing control wall (52b). The side protrusions (64) are integrally formed with a space in the vertical direction. A refrigerant inlet (66) is formed in the protruding end wall of the upper left protrusion (62) of the front cap (42a) of the right end member (42), and the upper left protrusion (63) of the rear cap (42b) is also formed. A refrigerant outlet (67) is formed in the protruding end wall. Engaging claws (65) that project to the left and engage both members (38) (39) are integrated into the arc-shaped part between the front and rear side edges and the upper and lower edges of the right end member (42). Is formed.

  As shown in FIGS. 6 and 7, a first engaging male part (1) projecting upward is integrally formed at the center in the front-rear direction at the upper end of the connecting part (42c) of the right end member (42). A second engaging male part (2) projecting downward is integrally formed at the center part in the front-rear direction at the lower end of the connecting part (42c). The second engaging male part (2) protrudes to the right side in a state before all the parts are combined in manufacturing the evaporator (20). The second engaging male part protruding rightward is indicated by (2A) (see FIG. 10). Further, a notch (3) is formed in each of the front and rear end portions of the lower edge portion of the right end member (42). The right end member (42) is brazed to both members (38) and (39) using its own brazing material layer.

  The joint plate (43) has a short cylindrical refrigerant inlet (68) (refrigerant inlet) that leads to the refrigerant inlet (66) of the right end member (42) and a short cylindrical refrigerant outlet that also leads to the refrigerant outlet (67). (69) (Refrigerant outflow portion). The refrigerant inflow port (68) and the refrigerant outflow port (69) are each composed of a circular through hole and a short cylindrical part integrally formed so as to protrude rightward around the through hole.

  In the joint plate (21) between the refrigerant inlet (68) and the refrigerant outlet (69), a slit (4) for preventing a short circuit extending in the vertical direction is formed, and the slit (4) Substantially trapezoidal through-holes (5) and (6) are formed to be connected to the upper and lower ends. The width in the front-rear direction of the slit (4) is preferably 1 mm or less. The upper part of the upper through hole (5) and the lower part of the lower through hole (6) of the joint plate (43) are U-shaped so as to protrude to the left (right end member (42) side). The first and second engaging female portions (7) and (8) are formed by bending. The first engaging female part (7) is inserted through the first engaging male part (1) of the right end member (42) from below and engaged with the first engaging female part (7). At the same time, the second engaging male part (2) of the right end member (42) is inserted into the second engaging female part (8) from above and engaged with the second engaging female part (8). This prevents the joint plate (43) from moving in the left-right direction. Further, the first engaging female portion (7) is engaged with both front and rear side portions of the first engaging male portion (1) in the connecting portion (42c) of the right end member (42), whereby the joint plate ( 43) is prevented from moving downward. Further, at both front and rear ends of the lower edge of the joint plate (43), an engaging claw (9) (convex portion) protruding leftward is formed integrally, and the engaging claw (9) The right end member (42) is engaged with the right end member (42) in a state of being fitted into a notch (3) formed at the lower edge of the right end member (42), thereby moving the joint plate (43) upward and in the front-rear direction. Is blocked. As described above, the joint plate (43) is engaged with the right end member (42) so as to be prevented from moving in the left-right direction, the up-down direction, and the front-rear direction, and the brazing filler metal layer of the right end member (42). Is brazed to the right end member (42).

  Although not shown, the joint plate (43) is formed with a refrigerant inlet (68) and a refrigerant outlet (69) having a short cylindrical portion spaced in the front-rear direction, and the refrigerant inlet (68) A wide slit (4) extending in the vertical direction is formed in a portion between the refrigerant outlet (69) and is widened as the distance from the slit (4) is extended to both upper and lower ends of the slit (4). It is made using a semi-finished joint plate with a trapezoidal slit width adjustment through hole (5) (6). The joint plate semi-finished product is longer in the front-rear direction than the joint plate (43).

  A method for manufacturing the joint plate (43) will be described.

  First, a metal plate, here an aluminum plate, is prepared, and the aluminum plate is subjected to a drawing process to form a refrigerant short port-shaped bulging portion and a refrigerant outlet forming bulging portion having a closed short cylindrical shape. Next, after forming a through hole in the central part of the top wall of both bulging parts, the peripheral part of the through hole in the top wall was raised outward by burring, and the refrigerant inlet (68) and the refrigerant outlet (69 ).

  Next, by pressing the aluminum plate, a blank having a predetermined shape is punched out, and a wide slit (4) extending vertically in a portion between the refrigerant inlet (68) and the refrigerant outlet (69) in the blank. Further, slit-width adjusting through holes (5) and (6) each having a substantially trapezoidal shape that becomes wider as the distance from the slit (4) increases, so as to be connected to both upper and lower ends of the slit (4). At the same time, the lower protrusions for forming the engaging claws that protrude downward are integrally formed at the front and rear ends of the lower edge of the blank. In this way, semi-finished joint plate is made.

  Next, while pressing the joint plate semi-finished product from the front-rear direction, the upper part of the upper slit width adjusting through hole (5) and the lower part of the lower slit width adjusting through hole (6) The first and second engaging female portions (7) and (8) are formed by bending the refrigerant inlet (68) and the refrigerant outlet (69) in the direction opposite to the projecting direction, that is, leftward to form the joint. The plate semi-finished product is shortened in the front-rear direction, and the wide slit (4) is adjusted so that the width in the front-rear direction is narrowed to form the slit (4) for preventing a short circuit. Finally, the engaging claw forming lower projection is bent leftward to form the engaging claw (9). Thus, the joint plate (43) is manufactured.

  The formation of the engaging claw (9) by bending the engaging claw-forming downward projection to the left may be performed at any stage as long as the blank is punched out.

  A reduced diameter portion formed at one end of the refrigerant inlet pipe (27) is inserted into the refrigerant inlet (68) of the joint plate (43) and brazed, and similarly to the refrigerant outlet (69), the refrigerant outlet pipe A reduced diameter portion formed at one end of (28) is inserted and brazed. Although not shown, an expansion valve mounting member is joined to the other ends of the refrigerant inlet pipe (27) and the refrigerant outlet pipe (28) so as to straddle both pipes (27) and (28).

  As shown in FIGS. 2, 3, 8 and 9, the refrigerant turn header tank (23) is formed of an aluminum brazing sheet having a brazing filler metal layer on both sides and all the heat exchange tubes (34) are connected. Plate-shaped first member (73), a second member (74) made of a bare material formed from an extruded aluminum material and covering the lower side of the first member (73), and a brazing material layer on both sides Aluminum left and right end members (75) and (76) brazed to the left and right ends of both members (73) and (74), and the outer surface of the right end member (76) on the refrigerant inflow side. It consists of a communication member (77) made of aluminum bare material that is brazed so as to straddle the intermediate header part (30) and the refrigerant outflow side intermediate header part (31), and through the communication member (77). The refrigerant inflow side intermediate header (30) and the refrigerant outflow side intermediate header (31) are at the right end. It is made to communicate with.

  The first member (73) forms an upper bulging first header forming part (78) that forms the upper part of the refrigerant inflow side intermediate header part (30) and the upper part of the refrigerant outflow side intermediate header part (31). Connecting the second bulging second header forming portion (79), the rear edge of the first header forming portion (78) and the front edge of the second header forming portion (79) 32) and a connecting wall (81) forming the upper part. Then, both side surfaces are provided by the inclined walls (78a) (79a) and the connecting walls (81) provided on the inner side in the front-rear direction of both header forming portions (78) (79) and inclined upward in the front-rear direction toward the upper side. A drainage basin (33) that is inclined outward in the front-rear direction toward the upper side is formed. A plurality of pipe insertion holes (82) that are long in the front-rear direction are formed in both header forming portions (78), (79) at intervals in the left-right direction. The pipe insertion holes (82) of both header forming portions (78) (79) are at the same position in the left-right direction. The end of the pipe insertion hole (82) on the connecting part (32) side, that is, the rear end of the pipe insertion hole (82) of the first header forming part (78) and the pipe insertion hole of the second header forming part (79) ( 82) are located on the inclined walls (78a) and (79a), respectively, so that the end of the pipe insertion hole (82) on the connection part (32) side is located on the side surface of the drainage basin (33). Yes. In addition, the front and rear direction outer portions of the pipe insertion holes (82) in both header forming portions (78) and (79) are connected to the outer ends of the pipe insertion holes (82) in the front-rear direction and away from the pipe insertion holes (82). A drainage groove (83) gradually downward is formed. The lower end portions of the heat exchange pipes (34) of the front and rear heat exchange pipe groups (35) of the heat exchange core part (21) are inserted into the pipe insertion holes (82) of both header forming parts (78) (79), The first member (73) is brazed to the first member (73) using the brazing material layer of the first member (73), so that the lower end portion of the heat exchange pipe (34) of the front heat exchange pipe group (35) flows into the refrigerant. The lower end portion of the heat exchange pipe (34) of the rear heat exchange pipe group (35) is connected to the side intermediate header part (30) in communication with the refrigerant outflow side intermediate header part (31). In addition, a plurality of drainage through holes (84) that are long in the left-right direction are formed in the connecting wall (81) of the first member (73) at intervals in the left-right direction. In addition, a plurality of fixing through holes (85) are formed in the connecting wall (81) of the first member (73) at intervals in the left-right direction so as to be shifted from the drain through holes (84). Has been. The first member (73) has the same shape as the first member (38) of the refrigerant inlet / outlet header tank (22), and both the members (73) and (38) are arranged upside down.

  The second member (74) forms a first bulging first header forming portion (86) that forms a lower portion of the refrigerant inflow side intermediate header portion (30), and a lower portion of the refrigerant outflow side intermediate header portion (31). The second bulge-shaped second header forming portion 87 and the header forming portions 86, 87 are connected to each other and brazed to the connecting wall 81 of the first member 73 so that the connecting portion ( And a connecting wall (88) forming 32). The second header forming portion (87) integrally connects the upper end portions of the front and rear walls (87a) and partitions the refrigerant outflow side intermediate header portion (31) into two upper and lower spaces (31A) and (31B). A horizontal flow control wall (87b). A plurality of circular coolant passage holes (89) are formed in a penetrating manner at intervals in the left-right direction at a portion of the shunt control wall (87b) on the rear side of the center portion in the front-rear direction. The distance between adjacent circular refrigerant passage holes (89) gradually increases as the distance from the right end portion increases. Note that the intervals between adjacent circular refrigerant passage holes (89) may all be equal. In the connecting wall (88) of the second member (74), a drainage through hole (91) that is long in the left-right direction is formed at a position matching the drainage through hole (84) of the first member (73). Protrusions (92) that protrude upward and are inserted through the fixing through holes (85) are formed at positions corresponding to the fixing through holes (85) of one member (73). In the first member (73) and the second member (74), the protrusion (92) is inserted into the fixing through hole (85) and caulked so that both members (73) and (74) are temporarily fixed. In this state, using the brazing material layer of the first member (73), the front edge portions of the first header forming portions (78) and (86) of both members (73) and (74) are connected to each other, and the second header forming portion ( 79) (87) rear edge portions and connecting portions (81) (88) are brazed. The second member (74) is the first member of the refrigerant inlet / outlet header tank (22) except for the shape and position of the refrigerant passage holes (89), (54A), (54B) and the presence / absence of the flow dividing control wall (52b). The shape is the same as that of the member (39), and both the members (74) (39) are arranged upside down. Both members (74) and (39) are formed from the same extruded profile.

  And the hollow refrigerant inflow side intermediate header part main body which the both ends opened by the 1st header formation part (78) of the 1st member (73) and the 1st header formation part (86) of the 2nd member (74) (300) is formed, and the hollow refrigerant outflow is opened at both ends by the second header forming portion (79) of the second member (74) and the second header forming portion (87) of the second member (74). A side intermediate header body (310) is formed.

  The left end member (75) includes a front cap (75a) that closes the left end opening of the refrigerant inflow side intermediate header part main body (300) and a rear cap (75b) that closes the left end opening of the refrigerant outflow side intermediate header part main body (310). ), And the front cap (75a) is integrally formed with a right protruding portion (93) that can be fitted into the refrigerant inflow side intermediate header body (300). (75b) includes an upper right protrusion (94) that is fitted into the space above the flow dividing control wall (87b) of the refrigerant outflow side intermediate header body (310), and a flow dividing control wall (87b). In addition, a lower right protrusion (95) fitted into the lower space is integrally formed with a space in the vertical direction. Further, the engaging claw (100) that protrudes rightward and engages both members (73) and (74) on the arc-shaped portion between the front and rear side edges and the upper and lower edges of the left end member (75). Are integrally formed. The left end member (75) is brazed to both members (73) and (74) using its own brazing material layer.

  The right end member (76) includes a front cap (76a) for closing the right end opening of the refrigerant inflow side intermediate header part main body (300) and a rear cap (76b) for closing the right end opening of the refrigerant outflow side intermediate header part main body (310). ) And a left protruding portion (96) that is fitted into the refrigerant inflow side intermediate header body (300) is formed integrally with the front cap (76a). (76b) includes an upper left protrusion (97) fitted into the space above the flow dividing control wall (87b) of the refrigerant outflow side intermediate header body (310), and a flow dividing control wall (87b). Also, the lower left protrusion (98) fitted into the lower space is integrally formed with a space in the vertical direction. Further, the engaging claw (99) that protrudes to the left and engages both members (73) and (74) in the arc-shaped portion between the front and rear side edges and the upper and lower edges of the right end member (76). Are integrally formed. In addition, at the front and rear ends of the upper edge of the right end member (76), there are engaging claws (104) protruding rightward and bent downward and engaged with the upper edge of the communication member (77). Engagement formed integrally with the lower edge of the lower end of the right end member (76), protruding rightward and bent upward and engaged with the lower edge of the communication member (77) A claw (104) is formed integrally. On the protruding end wall of the left protruding portion (96) of the front cap (76a) of the right end member (76), there is formed a refrigerant outlet (101) for allowing the refrigerant to flow out from the refrigerant inflow side intermediate header portion (30). Refrigerant is placed in the space (31B) below the shunt control wall (87b) of the refrigerant outflow side intermediate header (31) on the protruding end wall of the lower left protrusion (98) of the rear cap (76b). A refrigerant inflow port (102) for inflow is formed. Further, in the lower part of the peripheral edge of the refrigerant inlet (102) in the lower left protruding part (98) of the rear cap (76b), the refrigerant outlet side intermediate header part (31) is inclined upward inward. Alternatively, a curved guide portion (103) is formed integrally. The guide part (103) causes the refrigerant flowing into the space (31B) below the flow dividing control wall (87b) of the refrigerant outflow side intermediate header part (31) to flow upward (to the flow dividing control wall (87b) side). invite. The right end member (76) is brazed to both members (73) (74) using its own brazing material layer.

  The communicating member (77) is formed by pressing an aluminum bare material, and is a plate having the same shape and size as the right end member (76) when viewed from the right, and its peripheral edge is at the right end. The outer surface of the member (76) is brazed using the brazing material layer of the right end member (76). The communication member (77) is formed with an outward bulging portion (105) so as to pass through the refrigerant outlet (101) and the refrigerant inlet (102) of the right end member (76). The inside of the outward bulging portion (105) serves as a communication path through which the refrigerant outlet (101) and the refrigerant inlet (102) of the right end member (76) are passed. Further, notches (106) into which the engaging claws (104) of the right end member (76) are fitted are formed at both the front and rear end portions of the upper edge of the communication member (77) and the center portion of the lower edge in the front and rear direction. Yes.

  The evaporator (20) described above is manufactured by combining all the parts except the inlet pipe (27) and the outlet pipe (28) and brazing them together.

  Hereinafter, a method for combining the right end member (42) of the refrigerant inlet / outlet header tank (22) and the joint plate (43) when manufacturing the evaporator (20) will be described with reference to FIGS.

  First, as shown in FIG. 10, using an aluminum brazing sheet having a brazing filler metal layer on both sides, an upper left protrusion (62) and a lower left protrusion (80) in which a refrigerant inlet (66) is formed. A front cap (42a) having an upper left protrusion (63) and a lower left protrusion (64) formed with a refrigerant outlet (67), and both caps (42a). A right end member (42) including a connecting portion (42c) for connecting and integrating (42b) and an engaging claw (65) is manufactured. In addition, the first engaging male part (1) protruding upward is integrally formed at the center part in the front-rear direction at the upper end of the connection part (42c), and the center part in the front-rear direction at the lower end part of the connection part (42c). A second engaging male part (2A) protruding rightward is integrally formed, and notches (3) are formed at both front and rear ends of the lower edge part of the right end member (42).

  On the other hand, using an aluminum bare material, the refrigerant inlet (68), the refrigerant outlet (69), the short-circuit preventing slit (4), the upper and lower slit width adjusting through holes (5) (6) The joint plate (43) having the first and second engaging female portions (7), (8) and the engaging claws (9) is manufactured.

  Next, as shown in FIG. 11 (a), the joint plate (43) is set in a vertical state, and the first engaging male part (1) of the right end member (42) is moved obliquely from the lower left to the joint plate (43). Pass through the upper through hole (5). Next, the right end member (42) is rotated in the counterclockwise direction of FIG. 11 (a) to be in a vertical state, and the second engaging male part (2A) protruding sideways is penetrated under the joint plate (43). The hole (6) is passed from the left (see FIG. 11 (b) and the chain line in FIG. 12). As a result, the first engaging female portion (7) is inserted in the state where the first engaging male portion (1) of the right end member (42) is inserted through the first engaging female portion (7) of the joint plate (43) from below. ). When the first engaging male part (1) of the right end member (42) is passed through the through hole (5) on the joint plate (43), the relative positional relationship between them is shown in FIG. For example, the right end member (42) may be in a vertical state. Further, the first engaging female portion (7) of the joint plate (43) is engaged with both front and rear side portions of the first engaging male portion (1) at the upper end of the connecting portion (42c) of the right end member (42). At the same time, the engaging claw (9) of the joint plate (43) is fitted into the notch (3) of the right end member (42). Thereafter, the second engaging male part (2A) is bent downward to be in a vertical state, and the second engaging male part (2) of the right end member (42) is set to the second engaging female part (8) of the joint plate (43). ) Is engaged with the second engaging female portion (8) while being inserted from above. Thus, the joint plate (43) is engaged with the right end member (42) so as not to move in the left-right direction, the up-down direction, and the front-rear direction with respect to the right end member (42) (see FIGS. 11 (c) and 12). .

  In the production of the evaporator (20), after combining the right end member (42) and the joint plate (43), the upper and lower left protrusions (62) (80) of the front cap (42a) of the right end member (42) In the space on both upper and lower sides of the flow control wall (51b) in the inlet header section between the first header forming sections (44) and (51) of the members (38) and (39) forming the refrigerant inlet / outlet tank (22). In addition, the upper and lower left projecting parts (63) and (64) of the rear cap (42b) are controlled in the outlet header part between the second header forming parts (45) and (52) of the members (38) and (39). Fit into the space on both the upper and lower sides of the wall (52b), and engage the engaging claw (65) on the upper side of the right end member (42) with both header forming parts (51) (52) of the second member (39) At the same time, by engaging the lower engaging claws (65) with both header forming portions (44) (45) of the first member (38), the right end member (42) and the joint plate (43) are Temporarily secured to the members (38) and (39).

  Instead, the right end member (42) is temporarily fixed to both members (38) and (39) that form the refrigerant inlet / outlet tank (22) first, and then the right end member (42) by the method described above. A joint plate (43) may be combined.

  The evaporator (20) constitutes a refrigeration cycle that uses a chlorofluorocarbon refrigerant together with a compressor and a condenser as a refrigerant cooler, and is mounted on a vehicle, for example, an automobile, as a car air conditioner.

  In the evaporator (20) described above, the gas-liquid mixed phase two-phase refrigerant that has passed through the compressor, the condenser, and the expansion valve flows from the refrigerant inlet pipe (27) to the refrigerant inlet (68) and the right end member of the joint plate (43). The refrigerant enters the upper space (24A) of the refrigerant inlet header portion (24) of the refrigerant inlet / outlet header tank (22) through the refrigerant inlet (66) of the front cap (42a) of (42). The refrigerant that has entered the upper space (24A) of the refrigerant inlet header (24) flows to the left, enters the lower space (24B) through the communication hole (70), and passes through the flow dividing adjustment hole (60). Enter the lower space (24B).

  The refrigerant entering the lower space (24B) is divided and flows into the refrigerant passage (34a) of the heat exchange pipe (34) of the front heat exchange pipe group (35). The refrigerant that has flowed into the refrigerant passage (34a) of the heat exchange pipe (34) flows downward in the refrigerant passage (34a) and into the refrigerant inflow side intermediate header (30) of the refrigerant turn header tank (23). enter. The refrigerant that has entered the refrigerant inflow side intermediate header (30) flows to the right, the refrigerant outlet (101) of the front cap (76a) of the right end member (76), and the outward bulge of the communication member (77). (105) in the lower space (31B) of the refrigerant outflow side intermediate header section (31) by turning to change the flow direction by passing through the communication passage in the refrigerant passage and the refrigerant inlet (102) of the rear cap (76b). to go into.

  The refrigerant that has entered the lower space (31B) of the refrigerant outflow side intermediate header (31) flows to the left, passes through the circular refrigerant passage hole (89) of the flow dividing control wall (87b), and enters the upper space (31A). It enters, splits, and flows into the refrigerant passages (34a) of all the heat exchange tubes (34) on the rear side. At this time, the refrigerant is guided to the guide part (103) and flows to the left side upward, that is, inward of the lower space (31B) toward the diversion control wall (87b), and as a result, the diversion control wall ( In combination with the fact that the interval between adjacent circular refrigerant passage holes (89) formed in 87b) gradually increases as the distance from the right end increases, the upper space (89) passes through the refrigerant passage hole (89). The distribution in the left-right direction of the refrigerant flowing into 31A) is made uniform as compared with the case where there is no guide portion (103). Therefore, the refrigerant is likely to be evenly divided into the heat exchange pipe (34) connected to the refrigerant outflow side intermediate header part (31), and the distribution of the refrigerant in the heat exchange core part (21) is less likely to occur. The temperature of the air passing through the heat exchange core part (21) is also made uniform, and the heat exchange performance is improved.

  The refrigerant flowing into the refrigerant passage (34a) of the heat exchange pipe (34) changes the flow direction and flows upward in the refrigerant passage (34a) to enter the lower space (25B) of the refrigerant outlet header (25). And enters the upper space (25A) through the oblong refrigerant passage holes (54A) (54B) of the flow dividing control wall (52b).

  Next, the refrigerant that has entered the upper space (25A) of the refrigerant outlet header portion (25), the refrigerant outlet (67) of the rear cap (42b) of the right end member (42) and the refrigerant outlet (of the joint plate (43)) ( 69) and flows out to the refrigerant outlet pipe (28).

  While the refrigerant flows through the refrigerant passage (34a) of the front heat exchange pipe (34) and the refrigerant passage (34a) of the rear heat exchange pipe (34), the ventilation gap of the heat exchange core section (21) The refrigerant exchanges heat with the air passing through and flows out as a gas phase.

  13 and 14 show a modification of the right end member (42).

  As shown in FIG. 13, the first engaging male part (1) of the right end member (42) protrudes to the right in a state before all the parts are combined in manufacturing the evaporator (20). The first engaging male part protruding rightward is indicated by (1A). Other configurations are the same as those of the right end member (42) of the above-described embodiment, and the same portions are denoted by the same reference numerals.

  The method of combining the right end member (42) and the joint plate (43) when manufacturing the evaporator (20) is as follows.

  That is, as shown in FIG. 14 (a), the right end member (42) and the joint plate (43) are respectively placed in a vertical state, and then the first member protruding sideways is brought into close contact with each other. The male male part (1A) and the second engaging male part (2A) are passed through the upper and lower through holes (5) and (6) of the joint plate (43) from the left (see FIG. 14 (b)). At the same time, the engaging claw (9) of the joint plate (43) is fitted into the notch (3) of the right end member (42). Thereafter, the first engagement male part (1A) is bent upward to be in a vertical state, and the first engagement male part (1) of the right end member (42) is changed to the first engagement female part (7) of the joint plate (43). ) To be engaged with the first engaging female portion (7) while being inserted from below, and the second engaging male portion (2A) is bent downward to be in a vertical state so that the second end of the right end member (42) is second. The engaging male part (2) is engaged with the second engaging female part (8) in a state of being inserted from above into the second engaging female part (8) of the joint plate (43). Thus, the joint plate (43) is engaged with the right end member (42) so as not to move in the left-right direction, the up-down direction, and the front-rear direction with respect to the right end member (42).

  The combination of the right end member (42) and the joint plate (43) is performed either before or after temporarily fixing the right end member (42) to the two members (38) (39) forming the refrigerant inlet / outlet tank (22). Also good.

  15 and 16 show a modification of the joint plate (43).

  15 and FIG. 16, substantially trapezoidal notches (111) and (112) are formed at both upper and lower ends of the joint plate (43) between the refrigerant inlet (68) and the refrigerant outlet (69). ) Is formed. A first engaging female portion (113) into which the first engaging male portion (1) of the right end member (42) is inserted is integrated with an upper portion of the front side edge portion of the upper notch (111) in the joint plate (43). A second engaging female portion (114) is formed integrally with the lower notch (112) at the lower portion of the front edge of the lower notch (112) and into which the second engaging male portion (2) of the right end member (42) is inserted. Is formed.

  The first engaging female part (113) forms a through hole in the upper part of the joint plate (43), is connected to the first part extending downward from the upper edge of the joint plate (43) and the lower end of the first part, and A slit made of a second portion extending forward is inserted, and a portion of the joint plate (43) above the second portion of the slit is bent toward the right end member (42) and bent backward. A part of the second part of the slit is made to coincide with a part of the upper edge part of the through hole. The second engaging female part (114) forms a through hole in the lower part of the joint plate (43), and extends from the lower edge of the joint plate (43) upward to the upper end of the first part and A slit made of a second portion extending forward is inserted, and a portion of the joint plate (43) below the second portion of the slit is bent toward the right end member (42) and bent backward. A part of the second part of the slit is made to coincide with a part of the lower edge part of the through hole.

  Note that a slit (4) for preventing a short circuit is not formed in a portion of the joint plate (43) between the refrigerant inlet (68) and the refrigerant outlet (69).

  The other structure of the joint plate (43) is the same as that of the joint plate (43) of the above-described embodiment, and the same portions are denoted by the same reference numerals.

  The method of combining the right end member (42) and the joint plate (43) when manufacturing the evaporator (20) is the same as the method shown in FIGS. That is, the joint plate (43) is set in a vertical state, and the first engaging male part (1) of the right end member (42) is passed through the upper notch (111) of the joint plate (43) from the lower left. Next, the right end member (42) is rotated to a vertical state, and the second engaging male part (2A) of the horizontal body is passed through the lower notch (112) of the joint plate (43) from the left (see FIG. 16 chain line reference). As a result, the first engaging female portion (113) is inserted in the state where the first engaging male portion (1) of the right end member (42) is inserted through the first engaging female portion (113) of the joint plate (43) from below. ). Further, the first engaging female portion (113) of the joint plate (43) is engaged with the front and rear side portions of the first engaging male portion (1) at the upper end of the connecting portion (42c) of the right end member (42). At the same time, the engaging claw (9) of the joint plate (43) is fitted into the notch (3) of the right end member (42). Thereafter, the second engaging male part (2A) is bent downward to be in a vertical state, and the second engaging male part (2) of the right end member (42) is changed to the second engaging female part (114) of the joint plate (43). ) Is engaged with the second engaging female portion (114) while being inserted from above. Thus, the joint plate (43) is engaged with the right end member (42) so as not to move in the left-right direction, the up-down direction, and the front-rear direction with respect to the right end member (42).

  Further, the combination method of the right end member (42) and the joint plate (43) may be the same as the method shown in FIGS. That is, in the stage before the combination of both, the first engagement male part (1) of the right end member (42) is projected to the joint plate (43) side, and the notch (111) of the joint plate (43) is formed. After passing, it bends upward to be in a vertical state, whereby the first engaging male part (1) of the right end member (42) is inserted into the first engaging female part (113) of the joint plate (43) from below. In this state, the first engaging female part (113) may be engaged.

  17 and 18 show another modification of the right end member (42) and the joint plate (43).

  A notch (121) whose lower edge is horizontal is formed at the middle part in the front-rear direction of the upper edge of the joint plate (43), and at the center in the front-rear direction at the lower edge of the notch (121). A first engaging male part (122) protruding upward is integrally formed. In addition, a notch (123) whose upper edge is horizontal is formed at the middle part of the lower edge of the joint plate (43), and the center of the notch (123) in the front-rear direction. A second engaging male part (124) protruding downward is integrally formed on the part (see the chain line in FIG. 17 and the solid line in FIG. 18).

  The front cap (42a), the rear cap (42b) of the right end member (42), and the upper and lower edges of the connecting portion (42c) are connected in a straight line, and the upper and lower ends of the connecting portion (42c) are vertically A slit (125) extending in the direction is formed, and substantially trapezoidal through holes (126) and (127) are formed to be connected to the upper and lower ends of the slit (125). The upper part of the upper through hole (126) and the lower part of the lower through hole (127) of the right end member (42) are U-shaped so as to protrude rightward (joint plate (43) side). The first and second engaging female portions (128) and (129) are formed by bending. The first engagement female portion (128) is inserted into the first engagement male portion (122) of the joint plate (43) from below and engaged with the first engagement female portion (113). At the same time, the second engaging male part (123) of the joint plate (43) is inserted into the second engaging female part (114) from above and engaged with the second engaging female part (129). This prevents the joint plate (43) from moving in the left-right direction. The first engaging female portion (128) is engaged with both front and rear side portions of the first engaging male portion (122) in the horizontal portion (121) of the joint plate (43). 43) is prevented from moving upward.

  Other configurations of the joint plate (43) and the right end member (42) are the same as those of the joint plate (43) and the right end member (42) of the above-described embodiment, and the same portions are denoted by the same reference numerals.

  The right end member (42) is manufactured as follows. That is, the aluminum brazing sheet having a brazing filler metal layer on both sides is subjected to press working, the front cap (42a) having upper and lower left protrusions (62) and (80), the upper and lower left protrusions (63) and (64). ) Having a rear cap (42b), a connecting portion (42c) wider than the final product, and a blank having a predetermined shape having a protrusion for engaging claw formation straightly connected to both the front and rear caps (42a) (42b). Punch out. At this time, a wide slit (125) extending in the vertical direction is formed in the connecting portion (42c) of the blank, and the width is increased as the distance from the slit (125) is extended so as to be connected to the upper and lower ends of the slit (125). A trapezoidal slit width adjusting through hole (126) (127) is formed, and a refrigerant inlet (66), a refrigerant outlet (67), and a notch (3) are further formed.

  Next, while pressing the blank from the front-rear direction, the upper part of the upper slit width adjusting through hole (126) and the lower part of the lower slit width adjusting through hole (127) are moved to the right. The blank is shortened in the front-rear direction by forming the first and second engaging female portions (128), (129) by bending them so that the width in the front-rear direction of the wide slit (125) is reduced. Thus, a slit (125) is formed. Finally, the engagement claw forming protrusion is bent to the left to form the engagement claw (65). Thus, the right end member (42) is manufactured.

  A method of combining the right end member (42) and the joint plate (43) when manufacturing the evaporator (20) is as follows. That is, the second engaging male part of the joint plate (43) is projected in advance to the right end member (42) side (see the broken line in FIG. 17 and the chain line in FIG. 18). The second engaging male part facing the right end member (42) side is indicated by (124A). Then, the right end member (42) is set in a vertical state, and the first engagement male portion (122) of the joint plate (43) is passed through the through hole (126) on the right end member (42) from the lower right side. When the first engagement male part (122) of the joint plate (43) is passed through the through hole (126) on the right end member (42), the relative positional relationship between the two is as described above. For example, the joint plate (43) may be in a vertical state. Next, the joint plate (43) is rotated to a vertical state, and the second engaging male part (124A) is passed through the through hole (127) under the joint plate (43) from the left. As a result, the first engagement female portion (128) is inserted in the state where the first engagement male portion (122) of the joint plate (43) is inserted through the first engagement female portion (128) of the right end member (42) from below. ). Further, the first engaging female portion (128) of the right end member (42) is engaged with both the front and rear side portions of the first engaging male portion (122) in the horizontal portion (121) of the joint plate (43). At the same time, the engaging claw (9) of the joint plate (43) is fitted into the notch (3) of the right end member (42). Thereafter, the second engaging male part (124A) is bent downward to be in a vertical state, and the second engaging male part (124) of the joint plate (43) is changed to the second engaging female part (129) of the right end member (42). ) Is engaged with the second engaging female portion (129) while being inserted from above. Further, the second engaging female portion (129) of the right end member (42) is engaged with the front and rear side portions of the second engaging male portion (124) at the upper edge of the notch (123) of the joint plate (43). Let Thus, the joint plate (43) is engaged with the right end member (42) so as not to move in the left-right direction, the up-down direction, and the front-rear direction with respect to the right end member (42).

  The combination of the right end member (42) and the joint plate (43) is performed either before or after temporarily fixing the right end member (42) to the two members (38) (39) forming the refrigerant inlet / outlet tank (22). Also good. Further, in a state before the right end member (42) and the joint plate (43) are combined, the first engagement male part (122) is bent so as to face the right end member (42) side, and the right end member (42) The first engagement male part (122) of the joint plate (43) is thereby bent into the first engagement female part (42) of the right end member (42). The first engaging female part (128) may be engaged with the first engaging female part (128) inserted from below.

In the above embodiment, the heat exchanger according to the present invention is applied to an evaporator of a car air conditioner using a chlorofluorocarbon refrigerant, but is not limited to this, a compressor, a gas cooler as a refrigerant cooler, In a vehicle having a car air conditioner having an intermediate heat exchanger, an expansion valve and an evaporator and using a supercritical refrigerant such as a CO ₂ refrigerant, for example, an automobile, it may be applied to an evaporator of a car air conditioner.

1 is a partially cutaway perspective view showing an overall configuration of an evaporator according to the present invention. It is the vertical sectional view which omitted the middle part at the time of seeing the evaporator shown in Drawing 1 from back. It is the AA line expanded sectional view of Drawing 2 which omitted some. It is a disassembled perspective view of the part of the header tank for refrigerant | coolant in / out of the evaporator shown in FIG. FIG. 3 is a sectional view taken along line B-B in FIG. 2. FIG. 6 is an enlarged sectional view taken along the line CC of FIG. 5. It is the DD sectional view taken on the line of FIG. It is a disassembled perspective view of the part of the header tank for refrigerant | coolant turns of the evaporator shown in FIG. It is the EE sectional view taken on the line of FIG. It is a perspective view which shows the right end member and joint plate used when combining components in manufacturing an evaporator. It is a vertical sectional view which shows the method of combining a right end member and a joint plate in manufacturing an evaporator. It is a perspective view which shows the state which combined the right end member and the joint plate in manufacturing an evaporator. It is a perspective view which shows the modification of a right end member, and shows the right end member and joint plate used when combining components in manufacturing an evaporator. It is a vertical sectional view showing a modification of the right end member and showing a method of combining the right end member and a joint plate in manufacturing an evaporator. It is a perspective view which shows the modification of a joint plate and shows the right end member and joint plate used when combining components in manufacturing an evaporator. It is a perspective view which shows the modification of a joint plate and shows the state which combined the right end member and the joint plate in manufacturing an evaporator. It is a perspective view which shows the other modification of a right end member and a joint plate, and shows the right end member and joint plate used when combining components in manufacturing an evaporator. It is a perspective view which shows the other modification of a right end member and a joint plate, and shows the state which combined the right end member and the joint plate in manufacturing an evaporator.

(1) (1A): First engaging male part
(2) (2A): Second engaging male part
(3): Notch
(4): Slit
(5) (6): Through hole
(7): First engaging female part
(8): Second engaging female part
(9): Engaging claw (convex)
(20): Evaporator (heat exchanger)
(21): Heat exchange core
(22): Header tank for refrigerant entry / exit
(23): Header tank for refrigerant turn
(24): Refrigerant inlet header
(25): Refrigerant outlet header
(30): Refrigerant inflow side intermediate header (first intermediate header)
(31): Refrigerant outflow side intermediate header (second intermediate header)
(34): Heat exchange tube
(35): Heat exchange tube group
(36): Corrugated fin
(42): Right end member
(42a) (42b): Cap
(42c): Connection part
(43): Joint plate
(66): Refrigerant inlet
(67): Refrigerant outlet
(68): Refrigerant inlet (refrigerant inlet)
(69): Refrigerant outlet (refrigerant outlet)
(111) (112): Notch
(113): First engaging female part
(114): Second engaging female part
(122): First engaging male part
(124) (124A): Second engaging male part
(125): Slit
(126) (127): Through hole
(128): First engaging female part
(129): second engaging female part
(240): Inlet header body
(250): Outlet header body

Claims (16)

A refrigerant inlet / outlet header tank having a refrigerant inlet header portion and a refrigerant outlet header portion arranged side by side in the front-rear direction; and a refrigerant circulation path through the refrigerant inlet header portion and the refrigerant outlet header portion; A joint plate having a refrigerant inflow portion communicating with the refrigerant inlet and a refrigerant outflow portion communicating with the refrigerant outlet is formed by a refrigerant inlet header. In the heat exchanger joined to the refrigerant inlet / outlet header tank so as to straddle the part and the refrigerant outlet header part,
The refrigerant inlet header is composed of a hollow inlet header main body having both ends opened and a cap that is joined to both ends of the inlet header main body and closes both ends of the inlet header main body. A hollow outlet header body having an opening and a cap that is joined to both ends of the outlet header body and closes both ends of the outlet header body, and the refrigerant enters and exits through the inlet header body, the outlet header body, and the cap. A header tank is formed, a refrigerant inlet is formed in a cap joined to one end of the inlet header body, and a refrigerant outlet is formed in a cap joined to one end of the outlet header body. Are integrated through a connecting portion to form an end member,
A first engaging male part protruding upward is formed at the upper end of the connecting part of the end member, and a second engaging male part protruding downward is formed at the lower end of the connecting part of the end member. A first engaging female portion that protrudes and through which the first engaging male portion is inserted is formed, and a second engaging female portion that protrudes toward the end member and through which the second engaging male portion is inserted is formed in the lower portion. The first engaging male part of the end member is inserted into the first engaging female part of the joint plate from below and engaged with the first engaging female part, and the second engaging male part is A heat exchanger that is inserted into the second engaging female portion from above and engaged with the second engaging female portion, and in this state, the joint plate is joined to the end member of the refrigerant inlet / outlet header tank . The first engaging female portion of the joint plate is formed by bending a portion above the through hole formed in the upper part of the joint plate in the front-rear direction into a U-shape toward the end member, The heat exchanger according to claim 1 , wherein the mating portion is formed by bending a portion below a through hole formed in a lower portion of the joint plate in the front-rear direction toward the end member in a U shape . The first engaging female part of the joint plate is provided with a slit made of a first part extending downward from the upper edge of the joint plate and a second part extending to one of the front and rear and continuing to the lower end of the first part, It is formed by bending a portion of the joint plate above the second portion of the slit to the end member side and bending it to one of the front and rear sides, and the second engaging female portion is formed above the lower edge of the joint plate. A slit consisting of a first part extending in the direction of the first part and a second part extending to the front and rear of the first part and bending the part below the second part of the slit in the joint plate toward the end member. The heat exchanger according to claim 1 , wherein the heat exchanger is formed by bending in any one of front and rear . The first engaging female portion of the joint plate is engaged with the upper end of the connecting portion of the end member, whereby the downward movement of the joint plate is prevented. The heat exchanger in any one of . A refrigerant inlet / outlet header tank having a refrigerant inlet header portion and a refrigerant outlet header portion arranged side by side in the front-rear direction; and a refrigerant circulation path through the refrigerant inlet header portion and the refrigerant outlet header portion; A joint plate having a refrigerant inflow portion communicating with the refrigerant inlet and a refrigerant outflow portion communicating with the refrigerant outlet is formed by a refrigerant inlet header. In the heat exchanger joined to the refrigerant inlet / outlet header tank so as to straddle the part and the refrigerant outlet header part,
The refrigerant inlet header is composed of a hollow inlet header main body having both ends opened and a cap that is joined to both ends of the inlet header main body and closes both ends of the inlet header main body. A hollow outlet header body having an opening and a cap that is joined to both ends of the outlet header body and closes both ends of the outlet header body, and the refrigerant enters and exits through the inlet header body, the outlet header body, and the cap. A header tank is formed, a refrigerant inlet is formed in a cap joined to one end of the inlet header body, and a refrigerant outlet is formed in a cap joined to one end of the outlet header body. Are integrated through a connecting portion to form an end member,
A first engaging male part protruding upward is formed at the upper end of the joint plate, and a second engaging male part protruding downward is formed at the lower end of the joint plate. A first engaging female portion that protrudes and through which the first engaging male portion is inserted is formed, and a second engaging female portion that protrudes toward the end member and through which the second engaging male portion is inserted is formed in the lower portion. The first engaging male part of the joint plate is inserted from below into the first engaging female part of the end member and engaged with the first engaging female part, and the second engaging male part is A heat exchanger in which the two engaging female parts are inserted from above and engaged with the second engaging female parts, and in this state, the joint plate is joined to the end member of the refrigerant inlet / outlet header tank . The first engaging female portion of the end member is formed by bending a portion above the through hole formed in the upper part of the connecting portion of the end member in the front-rear direction to the joint plate side in a U shape, 6. The engagement female portion is formed by bending a portion below a through hole formed in a lower portion of a connecting portion of the end member in the front-rear direction into a U-shape toward the joint plate. Heat exchanger. The second engaging female portion of the end member is engaged with the lower end of the joint portion of the joint plate, whereby the downward movement of the joint plate is prevented . Heat exchanger. A notch is formed in the lower edge portion of the end member, and a convex portion that protrudes toward the end member side and fits in the notch of the end member is formed in the lower edge portion of the joint plate, and the convex portion is fitted in the notch. The heat exchanger according to any one of claims 1 to 7, wherein movement of the joint plate in the upward and front-rear directions is prevented . The refrigerant circulation path is disposed at a distance from the refrigerant inlet / outlet header tank, and is opposed to the first intermediate header part and the refrigerant outlet header part facing the refrigerant inlet header part, and communicated with the first intermediate header tank. A refrigerant turn header tank having an intermediate header portion and a heat exchange core portion formed between both header tanks are provided, and the heat exchange core portions are arranged at intervals in the length direction of both header tanks. The heat exchange pipe group is composed of a plurality of heat exchange pipes whose both ends are connected to both header tanks, and fins arranged between adjacent heat exchange pipes. The exchange pipe groups are arranged side by side in the ventilation direction, and the heat exchange pipes of at least one heat exchange pipe group are connected to the refrigerant inlet header part and the first intermediate header part, and the refrigerant outlet header part and the second intermediate header part, respectively. A heat exchanger according to any one of claims 1 to 8 being. A refrigerant inlet / outlet header tank having a refrigerant inlet header portion and a refrigerant outlet header portion arranged side by side in the front-rear direction; and a refrigerant circulation path through the refrigerant inlet header portion and the refrigerant outlet header portion; A joint plate having a refrigerant inflow portion communicating with the refrigerant inlet and a refrigerant outflow portion communicating with the refrigerant outlet is formed by a refrigerant inlet header. The refrigerant inlet / outlet header tank is joined to the refrigerant inlet / outlet header tank so as to straddle the refrigerant outlet header portion, and the refrigerant inlet / outlet header tank has a hollow inlet header portion main body opened at both ends, a hollow outlet header main body, A cap that is joined to both end portions of both header section main bodies and closes both end openings of both header section main bodies, and an inlet header section A refrigerant inlet is formed in the cap joined to one end of the body, and a refrigerant outlet is formed in the cap joined to one end of the outlet header body, and these two caps are integrated via a connecting part. A method of manufacturing a heat exchanger in which an end member is configured and a joint plate is joined to the end member,
A first engaging male part protruding upward is formed at the upper end of the connecting part of the end member, and a second engaging male part protruding toward the joint plate is formed at the lower end of the connecting part of the end member,
A slit extending in the vertical direction is formed between the refrigerant inflow portion and the refrigerant outflow portion in the joint plate, and a through slit width adjusting hole is formed so as to be connected to the upper and lower end portions of the slit. By bending the upper part of the width adjustment hole and the lower part of the lower slit width adjustment hole in a U-shape toward the end member, the joint plate is shortened in the front-rear direction, so that the end member side A first engaging female portion that projects through the first engaging male portion, and a through hole is formed in the lower portion of the joint plate, and protrudes toward the end member side below the through hole and the second engaging portion. Forming a second engaging female part through which the male part is inserted;
The first engaging male part of the end member is inserted from below into the first engaging female part of the joint plate and engaged with the first engaging female part, and the second engaging male part is inserted into the through hole of the joint plate. Then, the second engaging male part is inserted into the second engaging female part from above and engaged with the second engaging female part. In this state, the joint plate is used as an end member. The manufacturing method of the heat exchanger including joining . A refrigerant inlet / outlet header tank having a refrigerant inlet header portion and a refrigerant outlet header portion arranged side by side in the front-rear direction; and a refrigerant circulation path through the refrigerant inlet header portion and the refrigerant outlet header portion; A joint plate having a refrigerant inflow portion communicating with the refrigerant inlet and a refrigerant outflow portion communicating with the refrigerant outlet is formed by a refrigerant inlet header. The refrigerant inlet / outlet header tank is joined to the refrigerant inlet / outlet header tank so as to straddle the refrigerant outlet header portion, and the refrigerant inlet / outlet header tank has a hollow inlet header portion main body opened at both ends, a hollow outlet header main body, A cap that is joined to both end portions of both header section main bodies and closes both end openings of both header section main bodies, and an inlet header section A refrigerant inlet is formed in the cap joined to one end of the body, and a refrigerant outlet is formed in the cap joined to one end of the outlet header body, and these two caps are integrated via a connecting part. A method of manufacturing a heat exchanger in which an end member is configured and a joint plate is joined to the end member,
A first engaging male part protruding toward the joint plate is formed at the upper end of the connecting part of the end member, and a second engaging male part protruding toward the joint plate is formed at the lower end of the connecting part of the end member. ,
A slit extending in the vertical direction is formed between the refrigerant inflow portion and the refrigerant outflow portion in the joint plate, and a through slit width adjusting hole is formed so as to be connected to the upper and lower end portions of the slit. By bending the upper part of the width adjustment hole and the lower part of the lower slit width adjustment hole in a U-shape toward the end member, and shortening the joint plate in the front-rear direction, a through hole is formed in the upper part of the joint plate. And forming a first engaging female portion that protrudes to the end member side above the through hole and allows the first engaging male portion to be inserted therethrough, and further, forming a through hole in the lower portion of the joint plate, Forming a second engaging female part projecting to the end member side on the lower side and inserting the second engaging male part;
The first engagement male part of the end member is inserted through the upper through hole of the joint plate and then bent upward, whereby the first engagement male part is inserted into the first engagement female part from below and the first engagement The second engaging male part is inserted into the second engaging female part from above by engaging with the mating female part and bending the second engaging male part through the through hole of the joint plate and then bending downward. A heat exchanger manufacturing method including engaging the second engaging female portion and joining the joint plate to the end member in this state . A refrigerant inlet / outlet header tank having a refrigerant inlet header portion and a refrigerant outlet header portion arranged side by side in the front-rear direction; and a refrigerant circulation path through the refrigerant inlet header portion and the refrigerant outlet header portion; A joint plate having a refrigerant inflow portion communicating with the refrigerant inlet and a refrigerant outflow portion communicating with the refrigerant outlet is formed by a refrigerant inlet header. The refrigerant inlet / outlet header tank is joined to the refrigerant inlet / outlet header tank so as to straddle the refrigerant outlet header portion, and the refrigerant inlet / outlet header tank has a hollow inlet header portion main body opened at both ends, a hollow outlet header main body, A cap that is joined to both end portions of both header section main bodies and closes both end openings of both header section main bodies, and an inlet header section A refrigerant inlet is formed in the cap joined to one end of the body, and a refrigerant outlet is formed in the cap joined to one end of the outlet header body, and these two caps are integrated via a connecting part. A method of manufacturing a heat exchanger in which an end member is configured and a joint plate is joined to the end member,
A first engaging male part protruding upward is formed at the upper end of the connecting part of the end member, and a second engaging male part protruding toward the joint plate is formed at the lower end of the connecting part of the end member,
The joint plate is provided with a first slit consisting of a first portion extending downward from the upper edge thereof and a second portion extending to one of the front and rear sides of the first portion, and the second portion of the first slit in the joint plate. A first engaging female portion that protrudes toward the end member side and is inserted through the first engaging male portion at the upper portion of the joint plate by bending the upper portion to the end member side and bending to the front or rear side. And forming a through hole in a lower portion of the joint plate, a first portion extending upward from a lower edge of the joint plate, and a second portion extending to one of the front and rear and continuing to the through hole. Insert a slit, bend the part of the joint plate below the second part of the second slit to the end member side, and bend it to either the front or back By, forming a second engagement female portion for inserting the and notches on the lower projecting end member side and the second engagement male portion of the joint plate,
The first engaging male part of the end member is inserted into the first engaging female part of the joint plate from below and engaged with the first engaging female part, and the second engaging male part is notched in the joint plate. Then, the second engaging male part is inserted into the second engaging female part from above and engaged with the second engaging female part. In this state, the joint plate is used as an end member. The manufacturing method of the heat exchanger including joining . The first engaging female portion of the joint plate is engaged with the upper end of the connecting portion of the end member, thereby preventing the joint plate from moving downward. Manufacturing method of heat exchanger . A refrigerant inlet / outlet header tank having a refrigerant inlet header portion and a refrigerant outlet header portion arranged side by side in the front-rear direction; and a refrigerant circulation path through the refrigerant inlet header portion and the refrigerant outlet header portion; A joint plate having a refrigerant inflow portion communicating with the refrigerant inlet and a refrigerant outflow portion communicating with the refrigerant outlet is formed by a refrigerant inlet header. The refrigerant inlet / outlet header tank is joined to the refrigerant inlet / outlet header tank so as to straddle the refrigerant outlet header portion, and the refrigerant inlet / outlet header tank has a hollow inlet header portion main body opened at both ends, a hollow outlet header main body, A cap that is joined to both end portions of both header section main bodies and closes both end openings of both header section main bodies, and an inlet header section A refrigerant inlet is formed in the cap joined to one end of the body, and a refrigerant outlet is formed in the cap joined to one end of the outlet header body, and these two caps are integrated via a connecting part. A method of manufacturing a heat exchanger in which an end member is configured and a joint plate is joined to the end member,
Forming a first engaging male part protruding upward at the upper end of the joint plate, and forming a second engaging male part protruding toward the end member at the lower end of the joint plate;
A slit extending in the vertical direction is formed in the connecting portion of the end member, and a penetrating slit width adjusting hole is formed so as to be connected to both the upper and lower end portions of the slit, than the upper slit width adjusting hole in the connecting portion of the end member. The upper part and the part below the lower slit width adjustment hole are bent in a U-shape on the joint plate side to shorten the end member in the front-rear direction, so that it protrudes on the joint plate side above the connecting part of the end member. And forming a first engaging female portion through which the first engaging male portion is inserted, further forming a through hole at a lower portion of the connecting portion of the end member, and projecting to the joint plate side below the through hole and the second Forming a second engaging female part for inserting the engaging male part;
The first engaging male part of the joint plate is inserted from below into the first engaging female part of the end member and engaged with the first engaging female part, and the second engaging male part is inserted into the through hole of the end member. Then, the second engaging male part is inserted into the second engaging female part from above and engaged with the second engaging female part. In this state, the joint plate is used as an end member. The manufacturing method of the heat exchanger including joining . The second engaging female portion of the end member is engaged with both side portions of the second engaging male portion at the lower end portion of the joint plate, thereby preventing the joint plate from moving downward. Manufacturing method of heat exchanger. A notch is formed in the lower edge portion of the end member, and a convex portion that protrudes toward the end member side and fits in the notch of the end member is formed in the lower edge portion of the joint plate, and the convex portion is in the notch. The manufacturing method of the heat exchanger in any one of Claims 10-15 which has prevented the movement of the upper direction and the front-back direction of a joint plate by inserting .

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