JP2005300136A - Side plate for heat exchanger, and heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a side plate for a heat exchanger, and a heat exchanger allowing accurately arranging a side plate to a required position when the heat exchanger is manufactured. <P>SOLUTION: An evaporator 1 comprises a pair of header tanks 2, 3, a plurality of heat exchanging tubes 12 arranged in parallel with an interval to each other between the pair of header tanks 2, 3 with both end parts thereof connected to both the header tanks 2, 3, respectively, fins 14 arranged between the adjoining heat exchanging tubes 12 and outside of the heat exchanging tubes at both ends, and the side plate 15 arranged outside of the fins 14 at both ends. A plurality of penetrating holes 86 for positioning are formed on the side plate 15. The distance between the center in the length direction of the side plate 15 and that of the penetrating hole 86 for positioning is 30-90mm, or preferably, 40-70mm. A rising up part 87 for preventing detaching of a fin is integrally formed on the circumferential part of the penetrating hole 86 for positioning at the surface of the side plate 15 toward the fin side. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a heat exchanger side plate and a heat exchanger.

  In this specification and claims, the term “oval” includes not only a mathematically defined oval but also a shape that is close to a mathematically defined oval, such as an oval. Shall be.

   2. Description of the Related Art Conventionally, an evaporator for a car air conditioner includes, for example, a first header tank and a second header tank that are spaced apart from each other, and a heat exchange core portion provided between the header tanks. In addition, by dividing the interior in the ventilation direction by a partition wall, a refrigerant inlet header portion located on the downstream side in the ventilation direction and a refrigerant outlet header portion located on the upstream side in the ventilation direction are provided, and the inside of the refrigerant outlet header portion is The flow dividing resistor plate formed integrally with the refrigerant outlet header part is partitioned into two upper and lower spaces, and a plurality of refrigerant passage holes are formed in the flow dividing resistor plate, and the inside of the second header tank is partitioned by a partition wall. The refrigerant inflow header portion located downstream in the ventilation direction and the refrigerant outflow header portion located upstream in the ventilation direction are provided by partitioning in the ventilation direction by heat exchange. The heat exchange pipe group consisting of a plurality of heat exchange pipes arranged at intervals in the length direction of both header tanks is arranged in a plurality of rows side by side in the ventilation direction, and at least one row of heat Both ends of the heat exchange tubes of the exchange tube group are connected to the refrigerant inlet header portion and the refrigerant inflow header portion, and both ends of the heat exchange tubes of the other heat exchange tube groups are connected to the refrigerant outlet header portion and the refrigerant outflow header portion. Corrugated fins are arranged between adjacent heat exchange pipes in each heat exchange pipe group and outside the heat exchange pipes at both ends. An evaporator in which is arranged is proposed (see Patent Document 1). This evaporator is manufactured by combining and temporarily fixing the constituent members and brazing all the constituent members together.

However, in manufacturing the evaporator described in Patent Document 1, there is a problem that it is difficult to arrange the side plate at a required position.
Japanese Patent Laid-Open No. 2003-75024

  An object of the present invention is to provide a side plate for a heat exchanger and a heat exchanger that can accurately arrange the side plate at a required position in solving the above-described problems and manufacturing a heat exchanger.

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

  1) In a heat exchanger in which heat exchange tubes and fins are alternately arranged so that the fins are at both ends, the side plates are arranged outside the fins at both ends, and a plurality of positioning through holes are provided. A formed side plate for a heat exchanger.

  2) The side plate for a heat exchanger according to 1) above, wherein the distance between the center in the length direction and the center of the positioning through hole is 30 to 90 mm.

  3) The side plate for a heat exchanger as described in 1) above, wherein the distance between the center in the length direction and the center of the positioning through hole is 40 to 70 mm.

  4) The heat exchange according to any one of 1) to 3) above, wherein a rising portion for preventing the falling off of the fin is integrally formed at a peripheral portion of at least two positioning through holes on the surface facing the fin side. Side plate for dexterity.

  5) The side plate for a heat exchanger as described in 4) above, wherein the positioning through hole having a rising portion formed at the peripheral portion is circular or oval.

  6) The above 4) or 5), wherein at least two positioning through holes each having a rising portion formed at the peripheral edge are formed in a portion on one end side and a portion on the other end side from the center in the length direction. Side plate for heat exchanger.

  7) For the heat exchanger according to any one of 4) to 6) above, wherein the distance between the center in the length direction and the center of the positioning through hole in which the rising portion is formed at the peripheral edge is 30 to 90 mm. Side plate.

  8) The heat exchanger according to any one of 4) to 6) above, wherein the distance between the center in the length direction and the center of the positioning through hole in which the rising portion is formed at the peripheral portion is 40 to 70 mm. Side plate.

  9) The heat exchanger side plate according to any one of 4) to 8) above, wherein the protruding height of the rising portion is 2 mm or less.

  10) The number of through holes for positioning in which rising portions are formed on the peripheral edge is 2, and both the through holes for positioning are located on the center line in the width direction on one end side and the other end on the center in the length direction The side plate for a heat exchanger according to any one of the above 4) to 9), which is formed on each side portion.

  11) A pair of header tanks spaced from each other and a plurality of heat exchange tubes disposed in parallel with each other between the two header tanks and having both ends connected to both header tanks. And fins disposed between adjacent heat exchange tubes and outside the heat exchange tubes at both ends, and side plates disposed outside the fins at both ends, and the above-mentioned 1) to 10) as side plates A heat exchanger using any one of them.

  12) The heat exchanger according to 11) above, wherein the fin is a corrugated fin, and the width of the corrugated fin is 25 mm or more.

  13) The heat exchanger according to 12) above, wherein the corrugated fin has a width of 90 mm or less.

  14) A method of manufacturing the heat exchanger according to any one of the above 11) to 13), wherein a plurality of flat heat exchange tubes are arranged in parallel at intervals and adjacent to each other. Fins are disposed between the heat exchange tubes and outside the heat exchange tubes located at both ends, respectively, and the side plate according to any one of claims 1 to 9 is provided with a protrusion inserted into the positioning through hole. The two header tanks are arranged at intervals, the two header tanks are combined with the heat exchange pipes, the fins and the side plates, and the header tank And a heat exchange pipe, and a method of manufacturing a heat exchanger, including simultaneously brazing a corrugated fin, a heat exchange pipe and a side plate.

  15) A refrigeration cycle comprising a compressor, a condenser, and an evaporator, wherein the condenser comprises the heat exchanger according to any one of the above 11) to 13).

  16) A refrigeration cycle comprising a compressor, a condenser, and an evaporator, wherein the evaporator comprises the heat exchanger according to any one of the above 11) to 13).

  17) A vehicle equipped with the refrigeration cycle described in 15) or 16) above as an air conditioner.

  According to the heat exchanger side plate of 1) above, when manufacturing a heat exchanger using this, after arranging the heat exchange tubes and the fins alternately so that the fins are at both ends, for example, positioning through The side plate can be disposed outside the fins at both ends by using a jig having a protrusion inserted into the hole. Therefore, the side plate can be accurately arranged at a required position. In addition, since the side plate can be accurately arranged at a required position, it is possible to prevent the fins at both ends from falling off or shifting.

  According to the side plates for heat exchangers 2) and 3) above, the heat exchanger tubes can be used for heat exchangers having different lengths.

  According to the heat exchanger side plate of 4) above, when the heat exchange tubes and the fins are alternately arranged so that the fins come to both ends, the side plates rise when the side plates are arranged outside the fins at both ends. Since the fin is pressed by the portion, it is possible to prevent the fin from falling off or shifting.

  According to the heat exchanger side plate of 5) above, the rising wall at the peripheral edge of the positioning through hole can be formed relatively easily by burring.

  According to the heat exchanger side plate of 6) above, it is possible to prevent the end portions of the fins from falling off and shifting.

  According to the side plates for heat exchangers of the above 7) and 8), it is possible to reliably prevent the fins from falling off and shifting. And it becomes possible to use for the heat exchanger from which the length of a heat exchange pipe differs.

  According to the heat exchanger side plate of 9), the deformation of the fins can be suppressed as much as possible.

  The side plate for heat exchanger of the above 10) can be used in either direction with respect to the length direction.

  According to the heat exchanger of the above 11), in manufacturing this heat exchanger, the heat exchange tubes and the fins are alternately arranged so that the fins are at both ends, and then inserted into, for example, a positioning through hole. The side plate can be disposed outside the fins at both ends using a jig having protrusions. Therefore, the side plate can be accurately arranged at a required position. In addition, since the side plate can be accurately arranged at a required position, it is possible to prevent the fins at both ends from falling off or shifting. Further, when the side plates 4) to 9) are used, the fins are pressed by the rising portions of the side plates, so that the fins are prevented from falling off or shifting.

  According to the heat exchangers of the above 12) and 13), even when the portion near the center of the corrugated fin is pressed by the rising portion of the above-mentioned 7) and 8) as the side plate, Dropout can be prevented.

  According to the heat exchanger manufacturing method of 14), after the heat exchange tubes and the fins are alternately arranged so that the fins are at both ends, for example, a jig having a protrusion inserted into the positioning through hole is provided. In use, the side plate can be placed outside the fins at both ends. Therefore, the side plate can be accurately arranged at a required position. In addition, since the side plate can be accurately arranged at a required position, it is possible to prevent the fins at both ends from falling off or shifting. Further, when the side plates 4) to 9) are used, the fins are pressed by the rising portions of the side plates, so that the fins are prevented from falling off or shifting.

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

  In the following description, the upper and lower sides and the left and right sides in FIGS. Also, the direction indicated by the arrow X in FIG. 1 (the right side in FIG. 2) is the front, and the opposite side is the rear.

  1 to 3 show the overall configuration of the evaporator, FIG. 4 shows the configuration of the main part, and FIG. 5 shows a method for manufacturing the evaporator.

  1 to 3, the evaporator (1) includes an aluminum refrigerant inlet / outlet header tank (2) and an aluminum refrigerant turn header tank (3) that are spaced apart in the vertical direction, and both header tanks ( 2) A heat exchange core part (4) provided between (3).

  The refrigerant inlet / outlet tank (2) includes a refrigerant inlet header part (5) located on the front side (downstream side in the ventilation direction) and a refrigerant outlet header part (6) located on the rear side (upstream side in the ventilation direction). Yes. An aluminum refrigerant inlet pipe (7) is connected to the refrigerant inlet header (5) of the refrigerant inlet / outlet tank (2), and an aluminum refrigerant outlet pipe (8) is also connected to the refrigerant outlet header (6). . The refrigerant turn header tank (3) includes a refrigerant inflow header portion (9) located on the front side and a refrigerant outflow header portion (11) located on the rear side.

  The heat exchange core section (4) includes a plurality of rows of heat exchange pipe groups (13) composed of a plurality of aluminum heat exchange pipes (12) arranged in parallel at intervals in the left-right direction. Here, two rows are arranged. The ventilation gap between adjacent heat exchange pipes (12) of each heat exchange pipe group (13) and the outside of the heat exchange pipes (12) at the left and right ends of each heat exchange pipe group (13) are made of aluminum. Corrugated fins (14) are arranged and brazed to the heat exchange tubes (12). Aluminum side plates (15) are respectively arranged outside the corrugated fins (14) at the left and right ends and brazed to the corrugated fins (14). The upper and lower ends of the heat exchange pipe (12) of the front heat exchange pipe group (13) communicate with the refrigerant inlet / outlet header tank (2) and the refrigerant inlet / outlet header section (5) and the refrigerant inflow header section (9). Connected to the refrigerant turn header tank (3), the upper and lower ends of the heat exchange pipe (12) of the rear heat exchange pipe group (13) communicate with the refrigerant outlet header section (6) and the refrigerant outflow header section (11). In this way, it is connected to the refrigerant inlet / outlet header tank (2) and the refrigerant turn header tank (3).

  As shown in FIGS. 2 to 4, the refrigerant inlet / outlet header tank (2) is a plate-shaped first member formed of an aluminum brazing sheet having a brazing filler metal layer on both sides and connected to a heat exchange pipe (12). (16), a second member (17) made of a bare material formed from an aluminum extruded shape and covering the upper side of the first member (16), and an aluminum cap (18) (19 The joint plate (21) made of aluminum bare material is long on the outer surface of the right cap (19) so as to straddle the refrigerant inlet header (5) and the refrigerant outlet header (6). It is attached. A refrigerant inlet pipe (7) and a refrigerant outlet pipe (8) are connected to the joint plate (21).

  The first member (16) has curved portions (22) having a small cross-sectional arc shape with a central portion projecting downward at both front and rear side portions thereof. A plurality of tube insertion holes (23) that are long in the front-rear direction are formed in each bending portion (22) at intervals in the left-right direction. The tube insertion holes (23) of the front and rear curved portions (22) are at the same position in the left-right direction. Standing walls (22a) are integrally formed over the entire length at the front edge of the front curved portion (22) and the rear edge of the rear curved portion (22), respectively. In addition, a plurality of through holes (25) are formed at intervals in the left-right direction in the flat portion (24) between the curved portions (22) of the first member (16). The first member (16) is formed by simultaneously pressing the aluminum brazing sheet to form both curved portions (22), pipe insertion holes (23), flat portions (24) and through holes (25). able to make.

  The second member (17) has a substantially m-shaped cross section that opens downward, and is provided in the center between the front and rear walls (26) extending in the left-right direction and the front and rear walls (26) and extends in the left-right direction. In addition, the partition wall (27) as a partition means for partitioning the refrigerant inlet / outlet header tank (2) into two front and rear spaces, and the upper ends of the front and rear walls (26) and the upper end of the partition wall (27) are integrally connected to each other. And two connecting walls (28) having a substantially arc-shaped cross section projecting from each other.

  The lower end portions of the rear wall (26) and the partition wall (27) of the second member (17) serve as partition means for partitioning the refrigerant outlet header portion (6) into two upper and lower spaces (6a) and (6b). The shunt resistor plate (29) is integrally connected over the entire length. A plurality of refrigerant passage holes (31A) (31B) that are long in the left-right direction are formed in a penetrating manner at intervals in the left-right direction in the portion excluding the left and right end portions in the rear portion of the shunt resistor plate (29). ing. The lower end of the partition wall (27) protrudes downward from the lower ends of the front and rear walls (26), and a plurality of lower walls protrude downward and are fitted into the through holes (25) of the first member (16). The protrusions (27a) are integrally formed with an interval in the left-right direction. The protrusion (27a) is formed by cutting a predetermined portion of the partition wall (27).

  The second member (17) is formed by extruding both the front and rear walls (26), the partition wall (27), the connecting wall (28), and the shunt resistor plate (29), and then pressing them for shunting. Manufactured by forming coolant passage holes (31A) and (31B) in the resistance plate (29), and further cutting away the partition wall (27) to form protrusions (27a).

  Each cap (18) (19) is formed by pressing, forging or cutting from an aluminum brazing sheet having a brazing filler metal layer on both sides. On the front side of the right cap (19), a left protruding portion (32) that is fitted into the refrigerant inlet header portion (5) is integrally formed, and on the rear side, the refrigerant outlet header portion (6) is divided. The upper left protrusion (33) that fits in the space (6a) above the diversion resistance plate (29) and the space (6b) below the diversion resistance plate (29) The lower left protrusion (34) is integrally formed with a space in the vertical direction. In addition, an engaging claw (35) protruding leftward is formed integrally with the arc-shaped portion between the front and rear side edges and the upper edge of the right cap (19). Further, an engaging claw (36) projecting leftward is formed integrally with the front side portion and the rear side portion of the lower edge of the right cap (19). A refrigerant inlet (37) is formed in the bottom wall of the front left protrusion (32) of the right cap (19), and a refrigerant outlet (38) is also formed in the bottom wall of the rear upper left protrusion (33). Is formed. The left cap (18) is symmetrical with the right cap (19), and the rightward projecting portion (39) fitted into the refrigerant inlet header portion (5) and the shunt resistor plate of the refrigerant outlet header portion (6) Upper right protrusion (41) that fits in space (6a) above (29), lower right that fits in space (6b) below shunt resistor plate (29) The projecting portion (42) and the upper and lower engaging claws (43) and (44) projecting to the right are integrally formed. No opening is formed in the bottom wall of the right protrusion (39) and the upper right protrusion (41).

  The joint plate (21) has a short cylindrical refrigerant inlet (45) leading to the refrigerant inlet (37) of the right cap (19) and a short cylindrical refrigerant outlet (46) also leading to the refrigerant outlet (38). I have. Bent portions (47) protruding leftward are formed at portions between the refrigerant inlet (45) and the refrigerant outlet (46) at both upper and lower edges of the joint plate (21). The upper and lower bent portions (47) are engaged with portions between the refrigerant inlet header portion (5) and the refrigerant outlet header portion (6), respectively. Further, engaging claws (48) protruding leftward are integrally formed at both front and rear ends of the lower edge of the joint plate (21). The engaging claw (48) is engaged with the lower edge portion of the right cap (19).

  The first and second members (16), (17), the caps (18), (19), and the joint plate (21) of the refrigerant inlet / outlet tank (2) are brazed as follows. That is, the first and second members (16), (17) are inserted into the through holes (25) of the first member (16) by the protrusions (27a) of the second member (17) and caulked. The brazing material of the first member (16) in a state where the upper ends of the rising walls (22a) before and after the one member (16) and the lower ends of both front and rear walls (26) of the second member (17) are engaged. They are brazed together using layers. Both caps (18) and (19) are arranged so that the front protrusions (39) and (32) are in the space on the front side of the partition walls (27) in both members (16) and (17), and the rear upper protrusions ( 41) (33) is located behind the partition wall (27) in both members (16) and (17) and above the shunt resistor plate (29), and the rear lower protrusion (42 ) (34) are respectively fitted in the spaces behind the partition wall (17) and below the shunt resistor plate (29), and the upper engaging claws (43) (35) are second With the lower engaging claws (44) (36) engaged with the curved portion (22) of the first member (16) engaged with the connecting wall (28) of the member (17), The first and second members 16 and 17 are brazed using the brazing material layers of both caps 18 and 19. In the joint plate (21), the upper bent portion (47) is engaged with the center portion in the front-rear direction of the right cap (19) and the connecting wall (28) of the second member (17), and the lower bent portion is bent. The portion (47) is engaged with the center portion in the front-rear direction of the right cap (19) and the flat portion (24) of the first member (16), and the engaging claw (48) is under the right cap (19). In a state of being engaged with the edge portion, the right cap (19) is brazed using the brazing material layer of the right cap (19).

  Thus, the refrigerant inlet / outlet tank (2) is formed, the refrigerant inlet header portion (5) on the front side of the partition wall (27) of the second member (17) and the refrigerant on the rear side of the partition wall (27). It is the exit header (6). The refrigerant outlet header (6) is divided into upper and lower spaces (6a) and (6b) by a shunt resistor plate (29), and these spaces (6a) and (6b) are formed in the refrigerant passage holes (31A) ( 31B). The refrigerant outlet (38) of the right cap (19) communicates with the upper space (6a) of the refrigerant outlet header (6). Further, the refrigerant inlet (45) of the joint plate (21) is communicated with the refrigerant inlet (37), and the refrigerant outlet (46) is communicated with the refrigerant outlet (38).

  As shown in FIGS. 2 and 3, the refrigerant turn tank (3) is formed of an aluminum brazing sheet having a brazing filler metal layer on both sides and a plate-shaped first member (12) connected with a heat exchange pipe (12). 70), a second member (71) made of a bare material formed from an aluminum extruded profile and covering the lower side of the first member (70), and an aluminum brazing sheet having a brazing filler metal layer on both sides; It consists of an aluminum cap (72) that closes the left and right opening.

  The top surface (3a) of the refrigerant turn tank (3) has a central part in the front-rear direction as the highest part (73) and gradually decreases from the highest part (73) toward the front and rear sides. The cross section is formed in a circular arc shape. Grooves (74) extending from the front and rear sides of the highest portion (73) on the top surface (3a) to the front and rear sides (3b) are spaced at the left and right sides of the refrigerant turn tank (3). A plurality are formed.

  The first member (70) has a cross-sectional arc shape in which a central portion in the front-rear direction protrudes upward, and a hanging wall (70a) is integrally formed over the entire length on both front and rear edges. The upper surface of the first member (70) is the top surface (3a) of the refrigerant turn tank (3), and the outer surface of the hanging wall (70a) is the front and rear side surfaces (3b) of the refrigerant turn tank (3). ing. On both the front and rear sides of the first member (70), a groove (74) is formed from the highest position (73) at the center in the front-rear direction to the lower end of the hanging wall (70a). A long tube insertion hole (75) is formed in the front-rear direction between adjacent grooves (74) in the front and rear side portions excluding the highest portion (73) of the first member (70). The front and rear pipe insertion holes (75) are at the same position in the left-right direction. A plurality of through holes (76) are formed at intervals in the left-right direction in the highest position (73) of the first member (70). The first member (70) is formed by simultaneously forming the hanging wall (70a), the groove (74), the tube insertion hole (75), and the through hole (76) by pressing the aluminum brazing sheet. .

  The second member (71) has a substantially w-shaped cross section opened upward, and extends between the front and rear walls (77) and the front and rear walls (77) extending in the left-right direction curved upward toward the outer side in the front-rear direction. A vertical partition wall (78) as a partition means provided at the center and extending in the left-right direction and partitioning the refrigerant turn tank (3) into two front and rear spaces, and both front and rear walls (77) and partition walls ( 78) and two connecting walls (79) for connecting the lower ends of the two together.

  The upper end of the partition wall (78) of the second member (71) protrudes higher than the upper ends of the front and rear walls (77), and protrudes upward at the upper edge of the partition wall (78). A plurality of protrusions (78a) to be fitted into 76) are integrally formed at intervals in the left-right direction. Further, a coolant passage notch (78b) is formed between adjacent protrusions (78a) on the partition wall (78) from the upper edge thereof. The protrusion (78a) and the notch (78b) are formed by cutting a predetermined portion of the partition wall (78).

  The second member (71) is formed by integrally extruding both the front and rear walls (77), the partition wall (78), and the connecting wall (79), and then cutting the partition wall (78) to form protrusions (78a) and notches Manufactured by forming (78b).

  Each cap (72) is formed from an aluminum brazing sheet by pressing, forging or cutting. On the front side of each cap (72), a leftward and rightward projecting portion (81) that is fitted into the refrigerant inflow header portion (9) is integrally formed, and on the rear side, the refrigerant outflow header portion ( 11) A projecting portion (82) inward in the left-right direction that is fitted into the inside is integrally formed. In addition, an engaging claw (83) projecting inward in the left-right direction is integrally formed on the arc-shaped portion between the front and rear side edges and the lower edge of each cap (72), and is also formed on the upper edge in the left-right direction. A plurality of engaging claws (84) projecting inward are integrally formed at intervals in the front-rear direction.

  The first and second members (70) and (71) of the refrigerant turn tank (3) and the caps (72) are brazed as follows. The first and second members (70) and (71) are drooped before and after the first member (70) when the projection (78a) of the second member (71) is inserted into the through hole (76) and caulked. With the lower end of the wall (70a) and the upper end of both front and rear walls (77) of the second member (71) engaged, the brazing material layer of the first member (70) is used to braze each other. It is attached. Both caps (72) have front protrusions (81) in the space in front of the partition walls (78) of both members (70) (71), and rear protrusions (82) have both members (70 ) (71) are respectively fitted into the spaces behind the partition wall (78), and the upper engaging claw (84) is engaged with the first member (70), so that the lower engaging claw is engaged. With the (83) engaged with the front and rear walls (77) of the second member (71), the first and second members (70), (71) are utilized using the brazing material layer of each cap (72). ) Is brazed. Thus, the refrigerant turn tank (3) is formed, the refrigerant inflow header portion (9) on the front side of the partition wall (78) of the second member (71) and the refrigerant on the rear side of the partition wall (78). It is an outflow header (11). The upper end opening of the notch (78b) of the partition wall (78) of the second member (71) is closed by the first member (70), thereby forming a refrigerant passage hole (85).

  The heat exchange pipe (12) constituting the front and rear heat exchange pipe group (13) is made of a bare material formed of an aluminum extruded profile, and has a wide flat shape in the front and rear direction, and a plurality of parts extending in the length direction therein. The refrigerant passages are formed in parallel. The front and rear end walls of the heat exchange pipe (12) have an arc shape protruding outward. The heat exchange pipe (12) of the front heat exchange pipe group (13) and the heat exchange pipe (12) of the rear heat exchange pipe group (13) are arranged at the same position in the left-right direction. The upper end of the heat exchange pipe (12) is inserted into the pipe insertion hole (23) of the first member (16) of the refrigerant inlet / outlet header tank (2), and the brazing material layer of the first member (16) is used. The lower end of the first member (16) is inserted into the pipe insertion hole (36) of the first member (70) of the refrigerant turn header tank (3) and the first member (70) The first member (70) is brazed using a brazing material layer. Then, the heat exchange pipe (12) of the front heat exchange pipe group (13) communicates with the refrigerant inlet header part (5) and the refrigerant inflow header part (9), and the heat exchange pipe of the rear heat exchange pipe group (13). (12) communicates with the refrigerant outlet header (6) and the refrigerant outflow header (11).

  As the heat exchange pipe (12), instead of 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 having a hair shape into a hair projection 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 (14) is formed in a corrugated shape using an aluminum brazing sheet having a brazing filler metal layer on both sides. A louver is formed. The corrugated fin (14) is shared by both the front and rear heat exchange tube group (13), and the width in the front and rear direction is the heat exchange tube (12) front edge of the front heat exchange tube group (13) and the rear heat exchange. The distance between the rear edge of the heat exchanger tube (12) of the tube group (13) is substantially equal. Here, it is preferable that the width | variety of the front-back direction of a corrugated fin (14) is 25 mm or more and 90 mm or less. In addition, instead of sharing one corrugated fin between the front and rear heat exchange tube groups (13), corrugated fins are respectively arranged between adjacent heat exchange tubes (12) of both heat exchange tube groups (13). It may be.

  Each side plate (15) is formed using an aluminum bare material, and bent portions (15a) projecting inward in the left-right direction are integrally formed at both upper and lower ends thereof. The width in the front-rear direction of each side plate (15) is equal to the width in the front-rear direction of the corrugated fin (14). Each side plate (15) has a plurality of, in this case, two circular positioning through-holes (86) on one end side (upper end side) and the other end of the center in the length direction on the center line in the width direction. It is formed in the part of the side (lower end side), respectively. The shape of the positioning through hole (86) is not limited to a circle but may be an oval. The distance (D) between the center (O) in the length direction of each side plate (15) and the center of all the positioning through holes (86) is preferably 30 to 90 mm, and preferably 40 to 70 mm. Is desirable. The distance between the longitudinal center (O) of the side plate (15) and the positioning through holes (86) is preferably equal. The rising portion (87) for preventing the fin from falling off is integrally formed on the peripheral edge portion of the positioning through holes (86) on the side facing the fin (14) (the inner surface in the left-right direction) of each side plate (15). Yes. The rising portion (87) is formed by burring the side plate. Further, the protruding height of the rising portion (87) is preferably 2 mm or less, and preferably about 0.5 mm. In this case, deformation of the corrugated fin (14) can be suppressed as much as possible.

  The evaporator (1) constitutes a refrigeration cycle together with a compressor and a condenser, and is mounted on a vehicle such as an automobile as a car air conditioner.

  The evaporator (1) is manufactured as shown in FIG.

  First, a plurality of heat exchange tubes (12) and corrugated fins (14) are alternately arranged so that the corrugated fins (14) come to both ends. Next, a reciprocating jig (90) having two protrusions (91) to be inserted into both positioning through holes (86) is prepared, and the protrusions (91) are inserted into the positioning through holes (15) of the side plate (15). 86) With the jig (90) inserted into the heat exchange tube (12) and the corrugated fin (14), the side plates (15) are moved to the outside of the corrugated fins (14) at both ends. Deploy.

  Further, the protrusions (27a) of the second member (17) are inserted into the through holes (25) of the first member (16) and caulked, whereby the rising walls (22a) before and after the first member (16) are formed. The first member (16) and the second member (17) are temporarily fixed in a state where the upper end portion is engaged with the lower end portions of the front and rear walls (26) of the second member (17). In addition, both caps (18) and (19), and the front protrusions (39) and (32) protrude into the space on the front side of the partition wall (27) in both members (16) and (17), and the upper protrusions on the rear side. The parts (41) and (33) are disposed in the space behind the partition wall (27) in both members (16) and (17) and above the shunting resistance plate (29), and the rear lower projection (42) (34) is inserted into the space behind the partition wall (17) and below the shunt resistor plate (29), and the upper engaging claws (43) (35) are inserted. By engaging the connecting wall (28) of the second member (17) and further engaging the lower engaging claws (44), (36) with the curved portion (22) of the first member (16), Both caps (18) and (19) are temporarily fixed to both members (16) and (17). Further, the upper bent portion (47) is engaged with the center portion in the front-rear direction of the right cap (19) and the connecting wall (28) of the second member (17), and the lower bent portion (47) is moved to the right side. Engage the center portion of the cap (19) in the front-rear direction and the flat portion (24) of the first member (16), and further engage the engaging claw (48) with the lower edge of the right cap (19). Thus, the joint plate (21) is temporarily fixed to both the members (16) and (17) and the right cap (19). In this way, a refrigerant inlet / outlet tank temporary stopper is formed.

  On the other hand, by inserting the protrusion (78a) of the second member (71) into the through hole (76) and caulking, the lower end of the hanging wall (70a) before and after the first member (70) and the second member The first and second members (70) and (71) are temporarily fixed in a state where the upper ends of both front and rear walls (77) of (71) are engaged. Further, the front protrusions (81) of both caps (72) are placed in the space on the front side of the partition wall (78) in both members (70) (71), and the rear protrusions (82) are both members ( 70) and (71) are respectively fitted into the spaces behind the partition wall (78), the upper engaging claws (84) are engaged with the first member (70), and the lower engaging claws ( With the 83) engaged with the front and rear walls (77) of the second member (71), the caps (72) are temporarily fixed to the first and second members (70) (71). Thus, the refrigerant turn tank temporary fixing body is formed.

  Next, the both ends of the heat exchange pipe (12) are inserted into the pipe insertion holes (23) and (75) of the first members (16) and (70) of the refrigerant temporary storage tank and the refrigerant turn tank temporary fixing body. Insert.

  Thereafter, all the constituent members are brazed together. Thus, the evaporator (1) is manufactured.

  In the above embodiment, the side plate (15) has two positioning through-holes (86) on the center line in the width direction on one end side (upper end side) and the other end side of the center in the length direction. (The lower end side) each is formed, but is not limited to this, the position of the positioning through hole (86) can be changed as appropriate, and the number of positioning through holes (86) is It may be 3 or more. When three or more positioning through-holes (86) are formed, at least two positioning through-holes (86) are arranged at one end side (upper end side) and the other end side (lower end side) from the center in the length direction. ), And a rising portion (87) is preferably formed at the peripheral edge of these positioning through holes (86).

  Further, in the above embodiment, between the refrigerant inlet header portion (5) and the refrigerant inflow header portion (9) of both header tanks (2) (3), and between the refrigerant outlet header portion (6) and the refrigerant outflow header portion. (11) is provided with one heat exchange tube group (13), but the present invention is not limited to this, and the refrigerant inlet header portion (5) of both header tanks (2) (3) and the refrigerant One or two or more heat exchange pipe groups (13) may be provided between the inflow header section (9) and between the refrigerant outlet header section (6) and the refrigerant outflow header section (11). . In the above embodiment, the refrigerant inlet / outlet header tank (2) is on the upper side and the refrigerant turn header tank (3) is on the lower side. There is a case where the refrigerant turn header tank (3) is used so as to come up.

  Moreover, in the said embodiment, although the heat exchanger by this invention is applied to the evaporator, it is not limited to this, It can apply also to other various heat exchangers, for example, a condenser.

Furthermore, the heat exchanger according to the present invention includes a compressor, a gas cooler, an intermediate heat exchanger, an expansion valve, an evaporator, and a vehicle equipped with a car air conditioner that uses a CO ₂ refrigerant, for example, an automobile. Sometimes used as an evaporator.

1 is a partially cutaway perspective view showing an overall configuration of an evaporator to which the present invention is applied. It is the vertical sectional view which abbreviate | omitted a part at the time of seeing the evaporator shown in FIG. 1 toward the front from back. It is the III-III line expanded sectional view of FIG. 2 which abbreviate | omitted one part. It is a disassembled perspective view of the tank for a refrigerant | coolant in / out. It is a figure which shows a part of manufacturing process of the evaporator shown in FIG.

Explanation of symbols

(1): Evaporator
(2): Refrigerant tank
(3): Refrigerant turn tank
(12): Heat exchange pipe
(15): Side plate
(86): Positioning through hole
(87): Rising part
(90): Jig
(91): Projection

Claims (17)

In a heat exchanger in which heat exchange tubes and fins are alternately arranged so that the fins come to both ends, the side plates are arranged outside the fins at both ends, and a plurality of positioning through holes are formed. Side plate for heat exchanger. The side plate for a heat exchanger according to claim 1, wherein the distance between the center in the length direction and the center of the positioning through hole is 30 to 90 mm. The side plate for a heat exchanger according to claim 1, wherein the distance between the center in the length direction and the center of the positioning through hole is 40 to 70 mm. The side plate for a heat exchanger according to any one of claims 1 to 3, wherein a rising portion for preventing the fin from falling off is integrally formed at a peripheral portion of at least two positioning through holes on a surface facing the fin side. . The side plate for a heat exchanger according to claim 4, wherein the positioning through hole having a rising portion formed at the peripheral edge is circular or elliptical. 6. The heat exchange according to claim 4, wherein at least two positioning through-holes each having a rising portion formed at a peripheral edge portion are respectively formed in a portion on one end side and a portion on the other end side from the center in the length direction. Side plate for dexterity. The side plate for a heat exchanger according to any one of claims 4 to 6, wherein the distance between the center in the length direction and the center of the positioning through hole in which the rising portion is formed at the peripheral edge is 30 to 90 mm. The side plate for a heat exchanger according to any one of claims 4 to 6, wherein the distance between the center in the length direction and the center of the positioning through hole in which the rising portion is formed at the peripheral edge portion is 40 to 70 mm. The heat exchanger side plate according to any one of claims 4 to 8, wherein a protruding height of the rising portion is 2 mm or less. The number of through holes for positioning in which rising portions are formed at the peripheral edge is 2, and both the through holes for positioning are located on one end side and the other end side of the center in the length direction on the center line in the width direction. The side plate for heat exchangers according to any one of claims 4 to 9, wherein each side plate is formed in each part. A pair of header tanks spaced from each other, and a plurality of heat exchange tubes disposed in parallel with each other between the header tanks and having both ends connected to both header tanks, It is provided with the fin arrange | positioned between the adjacent heat exchange pipe | tubes and the outer side of the heat exchange pipe | tube of both ends, and the side plate arrange | positioned on the outer side of the fin of both ends, and any one of Claims 1-10 as a side plate A heat exchanger using the above-mentioned one. The heat exchanger according to claim 11, wherein the fin is a corrugated fin, and the width of the corrugated fin is 25 mm or more. The heat exchanger according to claim 12, wherein the width of the corrugated fin is 90 mm or less. It is a method of manufacturing the heat exchanger in any one of Claims 11-13,
A plurality of flat heat exchange tubes are arranged in parallel at intervals, and fins are arranged between adjacent heat exchange tubes and outside the heat exchange tubes located at both ends,
Disposing the side plate according to any one of claims 1 to 10 outside the fins at both ends using a jig having a protrusion inserted into the positioning through hole;
The two header tanks are arranged at intervals, and both header tanks are combined with heat exchange pipes, fins and side plates.
And a method of manufacturing a heat exchanger, which includes brazing a header tank and a heat exchange pipe, a corrugated fin, a heat exchange pipe and a side plate at the same time. A refrigeration cycle comprising a compressor, a condenser, and an evaporator, wherein the condenser comprises the heat exchanger according to any one of claims 11 to 13. A refrigeration cycle comprising a compressor, a condenser, and an evaporator, wherein the evaporator comprises the heat exchanger according to any one of claims 11 to 13. A vehicle on which the refrigeration cycle according to claim 15 or 16 is mounted as an air conditioner.

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