JP2008145045A - Heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchanger, preventing leakage of a fluid flowing through the interior even when large load is applied to a side plate. <P>SOLUTION: This heat exchanger 1 includes: upper and lower side plates 6, 7. The right end part of the front edge and the left end part of the rear edge of a plate body 23 of an upper side plate 6 are respectively provided with downward projecting pieces 25, 26 having extension parts 25a, 26a extending outward in the lateral direction. The extension part 25a of the right projecting piece 25 is joined to the outer surface of the front part of a right header 3. The extension part 26a of the left projecting piece 26 is joined to the outer surface of the rear part of a left header 2. The right end part of the rear edge and the left end part of the front edge of a plate body 23 of a lower side plate 7 are respectively provided with upward projecting pieces 25, 26 having extension parts 25a, 26a extending outward in the lateral direction. The extension part 25a of the right projecting piece 25 is joined to the outer surface of the rear part of the right header 3 and the tension part 26a of the left projecting piece 26 is joined to the outer surface of the front part of the left header 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a heat exchanger.

  In this specification and claims, the top, bottom, left and right of FIGS. 1, 5 and 6 are respectively top and bottom, and the left and right sides of FIG. It will be later.

  Conventionally, as a heat exchanger, a pair of left and right headers arranged in the vertical direction spaced apart from each other, and arranged in parallel with a gap in the vertical direction between both headers, both left and right end portions are both headers. A plurality of heat exchange tubes connected to each other, fins arranged between the adjacent heat exchange tubes and outside the heat exchange tubes at both upper and lower ends and joined to the heat exchange tubes, and outside the fins at both upper and lower ends, respectively A side plate that is disposed and joined to the fins, and both end portions of the side plate are brazed to both header tanks in a state of being inserted into through holes formed in both headers. (See Patent Document 1).

By the way, for example, in the case of a heat exchanger used as a condenser for a refrigeration cycle constituting a car air conditioner, a condenser may be attached in an engine room of a car using a side plate, or other parts may be attached to a side plate. is there. And in the heat exchanger of patent document 1, since the both ends of a side plate are brazed to both header tanks in the state inserted in the through-hole formed in both headers, respectively, this heat exchanger When a large load is applied to the side plate, the fluid flowing inside (the refrigerant in the case of a capacitor) may leak from the through hole. Moreover, in the heat exchanger of patent document 1, it is necessary to insert the edge part of a side plate in the through-hole of a header at the time of the assembly operation of each component in manufacture, and there exists a problem that workability | operativity falls.
JP 2001-116484 A

  An object of the present invention is to provide a heat exchanger that solves the above-described problems and can prevent leakage of fluid flowing inside even when a large load is applied to a side plate.

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

1) A pair of left and right headers arranged in the vertical direction spaced apart from each other, and a plurality of headers arranged in parallel with a gap in the vertical direction between both headers, and both left and right ends connected to both headers. Heat exchanger tubes, fins that are arranged between the adjacent heat exchanger tubes and outside the heat exchanger tubes at both ends of the upper and lower ends and joined to the heat exchanger tubes, and fins that are respectively arranged outside the fins at the upper and lower ends. In a heat exchanger with joined side plates,
Both side plates are equipped with strip-shaped plate bodies that extend in the left-right direction. Protruding pieces that project toward the heat exchange tubes are provided at the left and right ends of the plate body of at least one of the side plates. And a part of the protruding piece is joined to the outer surface of the front part or the rear part of the header.

  2) The protruding piece is formed integrally with the front side edge or the rear side edge of the plate body of the side plate, the protruding piece has an extension part extending outward in the left-right direction, and the extension part is joined to the outer surface of the header. The heat exchanger as described in 1) above.

  3) The extension part of one of the left and right ends of the plate body of the first side plate is joined to the outer surface of the front part of the header, and the extension part of the other second projection piece is connected to the header. The heat exchanger according to 2) above, which is joined to the outer surface of the rear portion.

  4) The extension of the first protruding piece provided at the end of the first side plate on the first protruding piece side of the plate body of the second side plate is joined to the outer surface of the rear portion of the header, and the second side plate The heat exchanger according to 3) above, wherein an extension of the second protruding piece provided at the end of the first side plate of the first side plate on the second protruding piece side is joined to the outer surface of the front portion of the header.

  5) The heat exchanger according to 2) above, wherein the extension portions of the protruding pieces at the left and right end portions of the plate body of the first side plate are joined to the outer surfaces on the same side of the front and rear sides of the header.

  6) The extension of the protruding pieces at the left and right ends of the plate body of the second side plate is joined to the outer surface of the header opposite to the side where the protruding pieces of the first side plate are joined 5) The described heat exchanger.

  7) The heat exchanger according to any one of 2) to 6) above, wherein the extension of the protruding piece of the side plate is a vertical plate.

  According to the heat exchangers of 1) and 2) above, both side plates are provided with strip-shaped plate bodies extending in the left-right direction, and both left and right end portions of the plate body of at least one of the side plates. When a large load is applied to the side plate, a protruding piece protruding to the heat exchange tube side is provided, and a part of the protruding piece is joined to the outer surface of the front part or the rear part of the header. In addition, leakage of the fluid flowing inside can be prevented. Therefore, when this heat exchanger is used, for example, as a condenser for a refrigeration cycle constituting a car air conditioner, the side plate is used to attach the condenser in the engine room of the automobile, or to attach other parts to the side plate. Is possible. In addition, the side plates can be arranged more easily than in the heat exchanger described in Patent Document 1 when assembling the components during manufacturing.

  According to the heat exchanger of 3) above, the entire twist when brazing the header and the heat exchange tube, the heat exchange tube and the fin, the fin and the side plate, and the extension of the protruding piece of the side plate and the header, respectively. Can be prevented, and the number of finishing steps after brazing can be reduced. In addition, the strength against twisting is increased.

  According to the heat exchanger of the above 4), the entire twist when brazing the header and the heat exchange pipe, the heat exchange pipe and the fin, the fin and the side plate, and the extension of the protruding piece of the side plate and the header, respectively. Can be more effectively prevented, and the finishing man-hours after brazing can be reduced. In addition, the strength against twisting is further increased. According to the heat exchanger of the above 7), even if there is a tolerance in the dimensions between the left and right headers when assembling each part, the extension part of the protruding piece of the side plate is brazed to the outer surface of the header without hindrance. can do.

  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 a heat exchanger in which a condensing part having a condenser function and a supercooling part having a supercooler function are integrated. In the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum.

Embodiment 1
This embodiment is shown in FIGS. FIG. 1 shows the overall configuration of the heat exchanger according to the first embodiment, and FIGS.

  In FIG. 1, the heat exchanger (1) has a pair of aluminum headers (2) (3) extending in the vertical direction and spaced apart from each other, and between the headers (2) (3). A plurality of flat aluminum heat exchange tubes (4) arranged in parallel at intervals in the direction and having both ends connected to both headers (2) and (3) by brazing, and adjacent heat exchange tubes (4) Aluminum corrugated fins (5) placed on the outside of the heat exchange pipe (4) between the upper and lower ends and brazed to the heat exchange pipe (4), and outside of the corrugated fins (5) on the upper and lower ends A pair of upper and lower aluminum side plates (6) and (7) brazed to the corrugated fin (5) and a block-shaped aluminum receiver fixed to the left header (2) by brazing A mounting member (8) and an aluminum receiver (9) extending in the vertical direction and fixed to the receiver mounting member (8). .

  Both headers (2) and (3) of the heat exchanger (1) are partitioned vertically by aluminum partition members (11) and (12) at the same height at the bottom, thereby allowing the gas-phase refrigerant to flow. A condenser (13) having a condenser function to be condensed into a liquid phase, and a supercooler for supercooling the liquid refrigerant condensed in the condenser (13) to a temperature about 5 to 15 ° C. lower than the condensation temperature A supercooling section (14) having a function is integrally provided side by side in the same vertical plane. Although not shown, the left and right headers (2) and (3) are made of a material having brazing material layers on both the inner and outer surfaces.

  Here, the upper part of the left header (2) above the partition member (11) is the condensing part left header part (2a), and the lower part is the subcooling part left header part (2b) and the right header (3). A portion above the partition member (12) is referred to as a condensing unit right header (3a), and a portion below the partition member (12) is referred to as a supercooling unit right header (3b).

  In the condensing part (13), a first aluminum partition plate (15) is provided in the middle of the height direction of the condensing part right header part (3a), and the lower part of the condensing part left header part (2a) is also provided. An aluminum second partition plate (16) is provided inside, and the condensing part (13) has a portion above the first partition plate (15), a portion between both partition plates (15) and (16), and In a portion below the second partition plate (16), a passage group (17), (18), (19) is provided which is composed of heat exchange pipes (4) arranged continuously in the vertical direction. The number of heat exchange tubes (4) constituting each of the passage groups (17), (18), and (19) decreases sequentially from the top. In addition, the flow direction of the refrigerant in all the heat exchange pipes (4) constituting each of the passage groups (17), (18), and (19) is the same, and two adjacent passage groups (17), (18) And the flow direction of the refrigerant in the heat exchange pipe (4) of (18) and (19) is different. A refrigerant inlet member (21) is brazed to the upper end of the condensing unit right header (3a) so as to communicate with the condensing unit right header (3a). In addition, the refrigerant outlet member (22) is brazed to the supercooling unit right header (3b) so as to communicate with the supercooling unit right header (3b).

  As shown in FIGS. 2 to 4, the upper side plate (6) is composed of a horizontal plate body (23) having a belt-like shape and bent at both left and right ends, and left and right edges on both front and rear edges of the plate body (23). A pair of front and rear reinforcing walls (24) integrally formed so as to protrude upward on the portion excluding the predetermined length portion at both ends, and the right end of the front side edge of the plate body (23), That is, the right side protruding piece (25) in the form of a vertical plate integrally formed so as to protrude toward the heat exchange pipe (4), and the lower end of the rear edge of the plate body (23), that is, the heat exchange pipe ( 4) a left-side protruding piece (26) having a vertical plate shape integrally formed so as to protrude to the side. Both projecting pieces (25) and (26) respectively have extensions (25a) and (26a) extending outward in the left-right direction, and these extensions (25a) and (26a) also have a vertical plate shape. . Therefore, the shape of the plate body (23) of the upper side plate (6), both reinforcing walls (24), both protruding pieces (25) (26), and both extensions (25a) (26a) ) With respect to the center point. The extension (25a) of the right protruding piece (25) is brazed to the outer surface of the front portion of the right header (3), and the extension (26a) of the left protruding piece (26) is brazed to the left header (2). It is brazed to the outer surface of the rear part. The lower side plate (7) has a shape in which the upper side plate (6) is rotated 180 degrees around a straight line extending in the left-right direction and turned upside down, and the same portions are denoted by the same reference numerals. That is, the lower side plate (7) is a strip-shaped horizontal plate body (23) whose left and right end portions are bent upward, and a predetermined length portion of both left and right end portions on both front and rear edges of the plate body (23). A pair of front and rear reinforcing walls (24) integrally formed so as to protrude downward, respectively, and a plate body (23) on the right end of the rear edge of the plate body (23), that is, a heat exchange pipe (4 A vertical plate-like right protruding piece (25) integrally formed so as to protrude to the side and having an extension (25a), and a heat exchanger tube (i.e., a heat exchanging pipe (25) above the left end of the front edge of the plate body (23). And 4) a left-side protruding piece (26) having a vertical plate shape integrally formed so as to protrude to the side and having an extension (26a). Then, the extension (25a) of the right protruding piece (25) is brazed to the outer surface of the rear portion of the right header (3), and the extension (26a) of the left protruding piece (26) is connected to the left header (2 ) Is brazed to the outer surface of the front part. Here, the upper side plate (6), the right side protruding piece (25) of the upper side plate (6), and the left side protruding piece (26) of the upper side plate (6) are respectively the first side described in the claims. Plate, first protruding piece of first side plate, and second protruding piece of first side plate, lower side plate (7), right side protruding piece (25) of lower side plate (7), and lower side The left protruding piece (26) of the side plate (7) serves as a second side plate, a first protruding piece of the second side plate, and a second protruding piece of the second side plate, respectively, which are described in the claims.

  One end of the receiver mounting member (8) communicates with a portion of the condensing unit left header (2a) below the second partition plate (16) and the other end communicates with the receiver (9). And a first flow path (27) for sending the refrigerant flowing out of the condenser (13) into the liquid receiver (9), one end of which is communicated with the left side of the supercooling section (2b) and the other end is received. A second flow path (28) is formed which communicates with the liquid container (9) and sends out the refrigerant in the liquid receiver (9) to the supercooling section (14).

  The liquid receiver (9) is a cylindrical body whose upper end is closed and whose lower end is open. Although not shown, a desiccant, a strainer for removing foreign matter, a filter, and the like are disposed therein.

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

  Then, the high-temperature and high-pressure gaseous refrigerant compressed by the compressor flows into the condenser right header part (3a) through the refrigerant inlet member (21), and each passage group (17) in the condenser part (13). (18) Condensates while flowing in a meandering manner in units of (19), flows into the condensing unit left header (2a), and is received through the first flow path (27) of the receiver mounting member (8). It flows into the liquid container (9), where moisture in the refrigerant is removed by the desiccant, and foreign substances in the refrigerant are removed by the strainer and filter, and the second flow path of the receiver mounting member (8). It flows into the supercooling part left header part (2b) through (28). The refrigerant flowing into the supercooler left header (2b) is supercooled by 5 to 15 ° C while flowing right in the heat exchange pipe (4), and flows into the supercooler right header (3b). After that, the refrigerant is sent to the evaporator through the refrigerant outlet member (22) and the expansion valve.

Embodiment 2
This embodiment is shown in FIG. FIG. 5 shows the overall configuration of the heat exchanger according to the second embodiment. In the case of the heat exchanger (30) shown in FIG. 5, the lower side plate (31) has a strip shape and a horizontal shape with the left and right ends bent upward. The side plate body (32) only. That is, the reinforcing wall (24), the projecting pieces (25) and (26), and the extensions (25a) and (26a) are removed from the lower side plate (7) of the first embodiment.

  Other configurations are the same as those of the heat exchanger according to the first embodiment, and the same components and the same parts are denoted by the same reference numerals and redundant description is omitted.

Embodiment 3
This embodiment is shown in FIGS. FIG. 6 shows the overall configuration of the heat exchanger of the third embodiment, and FIGS. 7 to 9 show the configuration of the main part thereof.

  In the case of the heat exchanger (40) shown in FIG. 6, as shown in FIGS. 7 to 9, the upper side plate (41) is a strip-like horizontal plate body (42) bent at the left and right ends. And a pair of front and rear reinforcing walls (43) integrally formed so as to protrude upward from the left and right ends of the plate body (42) except for a predetermined length at both ends, and the plate A vertical plate-shaped right protruding piece (44) integrally formed so as to protrude downward, i.e., toward the heat exchange pipe (4) side, at the right end of the rear edge of the main body (42), and a plate main body (42) A left-side protruding piece (45) having a vertical plate shape integrally formed so as to protrude downward, that is, toward the heat exchange pipe (4), is provided at the left end of the rear edge. Both projecting pieces (44) and (45) respectively have extensions (44a) and (45a) extending outward in the left-right direction, and these extensions (44a) and (45a) are also in the form of vertical plates. . Then, the extension (44a) of the right protruding piece (44) is brazed to the outer surface of the rear portion of the right header (3), and the extension (45a) of the left protruding piece (45) is brazed to the left header (2 ) Brazed to the outer surface of the rear part.

  The lower side plate (46) has a shape in which the upper side plate (41) is rotated 180 degrees around a straight line extending in the left-right direction and turned upside down, and the same portions are denoted by the same reference numerals. That is, the lower side plate (46) is a strip-shaped horizontal plate body (42) whose left and right end portions are bent upward, and a predetermined length portion of both left and right end portions on both front and rear edges of the plate body (42). A pair of front and rear reinforcing walls (43) integrally formed so as to protrude downward in the portion excluding the upper part, and the upper end of the front edge of the plate body (42), that is, the heat exchange pipe (4) Right side protruding piece (44) in the form of a vertical plate integrally formed so as to protrude to the side and having an extension (44a), and a heat exchange pipe (4) on the left end of the front edge of the plate body (42). And a left-side protruding piece (45) in the form of a vertical plate which is integrally formed so as to protrude to the side and has an extension (45a). Then, the extension (44a) of the right protruding piece (44) is brazed to the outer surface of the front portion of the right header (3), and the extension (45a) of the left protruding piece (45) is brazed to the left header (2). It is brazed to the outer surface of the front part.

  Other configurations are the same as those of the heat exchanger according to the first embodiment, and the same components and the same parts are denoted by the same reference numerals and redundant description is omitted.

  In the heat exchanger (40) of the third embodiment, the lower side plate (31) of the heat exchanger (30) of the second embodiment may be used instead of the lower side plate (46).

  In the above embodiment, the heat exchanger according to the present invention is applied to a heat exchanger (1) (30) (40) in which the condenser (13) and the supercooling unit (14) are integrated. As described above, the heat exchanger according to the present invention is naturally applicable to a single condenser separated from the supercooler.

  Furthermore, the heat exchanger according to the present invention can be applied to a heat exchanger in which a condensing unit and a supercooling unit are integrated, and a heat exchanger other than the condenser.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially omitted rear view showing an overall configuration of a heat exchanger according to Embodiment 1 of the present invention. It is the top view which abbreviate | omitted a part of heat exchanger of FIG. It is the perspective view which abbreviate | omitted a part of upper side plate of the heat exchanger of FIG. It is the perspective view which abbreviate | omitted the part which shows the whole heat exchanger of FIG. It is a partially-omission rear view which shows the whole structure of the heat exchanger of Embodiment 2 of this invention. It is a partially-omission rear view which shows the whole structure of the heat exchanger of Embodiment 3 of this invention. It is the top view which abbreviate | omitted a part of heat exchanger of FIG. It is the perspective view which abbreviate | omitted a part of upper side plate of the heat exchanger of FIG. It is the perspective view which abbreviate | omitted the part which shows the upper part of the heat exchanger of FIG.

Explanation of symbols

(1) (30) (40): Heat exchanger
(2) (3): Header
(4): Heat exchange pipe
(5): Corrugated fin
(6) (41): Upper side plate
(7) (31) (46): Lower side plate
(23) (42): Plate body
(25) (26) (44) (45): Protruding piece
(25a) (26a) (44a) (45a): Extension

Claims (7)

A pair of left and right headers arranged in the vertical direction spaced apart from each other, and a plurality of heats arranged in parallel in the vertical direction between the headers and having both left and right ends connected to both headers. An exchange pipe, fins arranged between the adjacent heat exchange pipes and outside the heat exchange pipes at both upper and lower ends and joined to the heat exchange pipes, and arranged outside the fins at both upper and lower ends and joined to the fins Heat exchanger with a side plate
Both side plates are equipped with strip-shaped plate bodies that extend in the left-right direction. Protruding pieces that project toward the heat exchange tubes are provided at the left and right ends of the plate body of at least one of the side plates. And a part of the protruding piece is joined to the outer surface of the front part or the rear part of the header. The protruding piece is formed integrally with the front side edge or the rear side edge of the plate body of the side plate, the protruding piece has an extension portion extending outward in the left-right direction, and the extension portion is joined to the outer surface of the header. Item 2. The heat exchanger according to Item 1. The extension of one of the left and right ends of the plate body of the first side plate is joined to the outer surface of the front side portion of the header, and the extension of the other second projection piece is the rear side of the header. The heat exchanger according to claim 2, wherein the heat exchanger is joined to an outer surface of the portion. An extension of the first projecting piece provided at the end of the first side plate on the first projecting piece side of the plate body of the second side plate is joined to the outer surface of the rear part of the header, and the plate of the second side plate is also used. The heat exchanger according to claim 3, wherein an extension portion of the second protruding piece provided at an end portion of the first side plate of the main body on the second protruding piece side is joined to an outer surface of the front portion of the header. The heat exchanger according to claim 2, wherein the extension portions of the protruding pieces at the left and right end portions of the plate body of the first side plate are joined to the outer surface on the same side of the front and rear sides of the header. The extension part of the protrusion piece of the left-right both ends in the plate main body of a 2nd side plate is joined to the outer surface on the opposite side to the side to which the protrusion piece of the 1st side plate in the header was joined, respectively. Heat exchanger. The heat exchanger according to any one of claims 2 to 6, wherein the extended portion of the protruding piece of the side plate has a vertical plate shape.

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