JP2015165173A - heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger capable of suppressing the occurrence of displacement between components when manufactured.SOLUTION: At the ends of strip-shaped bodies 13 of both side plate 6 of a condenser on the side of a head tank 3, positioning pieces 16 are integrally provided which are protruded to the side of the head tank 3, located on the side same as an area on the further ventilation-direction upstream or downstream side than the head tank 3, and partially overlapped with the head tank 3 in view from a ventilation direction. On one of the face of the positioning piece 16 facing to the side of the head tank 3 and the peripheral-wall outer peripheral face of the head tank 3, a fitting protruded part 17 is formed, and in the other, a fitted recessed part 18 is formed which the fitting protruded part 17 fits.

Description

  The present invention relates to a heat exchanger.

  For example, as a heat exchanger used in a condenser for a car air conditioner, a pair of header tanks that are spaced apart from each other with the longitudinal direction oriented in the same direction, and the header tank between the two header tanks. Between the adjacent heat exchange tubes and a plurality of heat exchange tubes that are spaced apart from each other and oriented in a direction perpendicular to the longitudinal direction and the ventilation direction, and whose both ends are connected to both header tanks And fins that are arranged outside the heat exchange tubes at both ends and brazed to the heat exchange tubes, and side plates that have belt-like bodies that are arranged outside the fins at both ends and brazed to the fins, respectively. The refrigerant inlet member is brazed to one of the upstream portion and the downstream portion in the ventilation direction of the peripheral wall of one header tank, and the peripheral wall of the other header tank Kicking heat exchanger refrigerant outlet member is brazed to the same side portion with refrigerant inlet member in the ventilating direction upstream side portion and the downstream portion are known (see Patent Document 1).

  A capacitor including a heat exchanger described in Patent Document 1 combines a heat exchange pipe, fins, and side plates on a flat reference surface in a horizontal orientation, and includes a refrigerant inlet member and a refrigerant outlet member as heat exchanger components. Temporarily fix to the header tank, and then keep the horizontal orientation, insert both ends of the heat exchange pipe into the pipe insertion holes of the header tank where the refrigerant inlet member and refrigerant outlet member are temporarily fixed. After temporarily fixing the product, the heat exchange pipe and fin, fin and side plate, heat exchange pipe and header tank, header tank, refrigerant inlet member and refrigerant outlet member are simultaneously heated by heating to a predetermined temperature in the furnace. Manufactured by brazing.

  By the way, in order to improve workability when inserting both ends of the heat exchange pipe into the pipe insertion holes formed in the peripheral wall of the header tank, a certain clearance is usually provided between the heat exchange pipe and the pipe insertion hole. Is provided. Therefore, after inserting both ends of the heat exchange pipe into the pipe insertion hole of the header tank, the header tank rotates around its axis by its own weight including the refrigerant inlet member and the refrigerant outlet member, and each of the completed heat exchangers There is a problem that the position of the component is displaced.

JP 2004-150669 A

  An object of the present invention is to provide a heat exchanger that solves the above-described problems and can suppress the occurrence of misalignment of each component during manufacturing.

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

1) A pair of header tanks that are spaced apart from each other with their longitudinal directions oriented in the same direction, and between the header tanks, the longitudinal direction is perpendicular to the longitudinal direction and the ventilation direction of the header tank. In a state of being oriented and spaced from each other, the heat exchange pipes whose both ends are connected to both header tanks, and between the adjacent heat exchange pipes and outside the heat exchange pipes at both ends. A heat exchanger comprising: fins brazed to a heat exchange tube; and side plates each having a strip-like body brazed to the fins and disposed outside the fins at both ends,
At least one header tank side end of the band-shaped body of at least one side plate of both side plates, and at the other header tank side end of the band-shaped body of at least one side plate of both side plates, A positioning piece that protrudes to the header tank side, is located on the same side of the upstream portion and the downstream portion in the ventilation direction from the header tank, and partially overlaps the header tank as viewed from the ventilation direction. A fitting projection is formed on one of the surface of the positioning piece facing the header tank side and the outer peripheral surface of the peripheral wall of the header tank, and the fitting projection is fitted on the other. A heat exchanger in which a fitting recess is formed.

  2) Heat exchanger parts are attached to either the upstream part or the downstream part in the ventilation direction of the peripheral wall of at least one of the header tanks, and the side plate positioning piece is The heat exchanger according to the above 1), which is provided on the side where the heat exchanger component is attached in the upstream side portion and the downstream side portion of the header tank in the ventilation direction.

  3) The heat exchanger according to 1) or 2) above, wherein a plurality of fitting convex portions and fitting concave portions are formed at intervals in the longitudinal direction of the header tank.

  4) The heat exchanger according to any one of 1) to 3) above, wherein the positioning pieces of the side plates are provided at both header tank side ends of both side plates.

  5) The heat exchanger according to any one of 1) to 4), wherein the positioning piece of the side plate is in surface contact along the outer peripheral surface of the peripheral wall of the header tank.

  6) Any one of the above 1) to 5), wherein the fitting protrusion is formed by half-cutting the positioning piece of the side plate, and the fitting recess including the through hole is formed in the peripheral wall of the header tank. The heat exchanger according to crab.

  7) Any one of the above 1) to 5), in which a fitting convex portion is formed by half-cutting the peripheral wall of the header tank, and a fitting concave portion including a through hole is formed in the positioning piece of the side plate. The heat exchanger according to crab.

  8) The fitting convex part is formed by half-cutting the positioning piece of the side plate, and the fitting concave part is formed by carrying out the inward half-punching process on the peripheral wall of the header tank. The heat exchanger according to any one of 5).

  9) Either one of the above 1) to 8), wherein the insertion portions inserted into the header tank through the slit formed in the peripheral wall of the header tank are integrally provided at both ends of the belt-shaped main body of the side plate. The described heat exchanger.

  According to the heat exchangers of 1) to 9) above, at least one side of one side of the header tank in the belt-like body of at least one side plate of both side plates and at least one side of both side plates. The other end of the plate-like body of the plate that faces the header tank protrudes toward the header tank and is located on the same side of the header tank upstream side and downstream side, and the direction of ventilation A positioning piece partially overlapping with the header tank as viewed from above is integrally provided, and a fitting convex portion is provided on one of the surface facing the header tank side of the positioning piece and the outer peripheral surface of the peripheral wall of the header tank. As well as being formed, a fitting recess is formed on the other side to which the fitting protrusion fits, so that the occurrence of positional deviation of each component during manufacturing is suppressed. Can. That is, in the state before brazing, when combining the heat exchange pipe, the fin and the side plate on a flat reference surface in a lateral orientation, either the positioning piece of the side plate or the peripheral wall of the header tank By inserting the formed fitting convex part into the fitting concave part formed on the other side, after inserting both ends of the heat exchange pipe into the pipe insertion hole of the header tank, the weight of the header tank by its own weight Around rotation can be suppressed. Therefore, it is possible to prevent occurrence of positional displacement of each component after brazing each component.

  As in the heat exchanger of the above 2), for example, a refrigerant inlet member, a refrigerant outlet member, or any one of the upstream side portion and the downstream side portion in the ventilation direction of the peripheral wall of at least one of the header tanks, When heat exchanger parts such as brackets are to be installed, the heat exchanger parts are usually temporarily attached to the header tank by spot welding or other methods before inserting the heat exchange pipe into the pipe insertion hole of the header tank. Stopped. Therefore, when the heat exchanger component arranges the temporary fixing header tank on the reference surface in the horizontal orientation, the header tank is more easily rotated around the axis. However, when the positioning piece of the side plate is provided on the side where the heat exchanger component is attached in the upstream side portion and the downstream side portion of the header tank, the fitting convex portion and the fitting concave portion The rotation around the axis of the header tank can be suppressed by the fitting.

  According to the heat exchangers of the above 3) to 5), in the state before brazing, rotation around the axis of the header tank due to its own weight after inserting both ends of the heat exchange pipe into the pipe insertion hole of the header tank. It can be effectively suppressed.

  According to the heat exchangers of 7) and 8) above, it is possible to reliably prevent refrigerant leakage from the header tank.

  According to the heat exchanger of 9) above, the strength of fixing the side plate to the header tank increases.

It is the front view which abbreviate | omitted one part which shows the whole structure of the capacitor | condenser to which the heat exchanger of this invention is applied. It is the AA line expanded sectional view which abbreviate | omitted a part of FIG. It is a disassembled perspective view which expands and shows the principal part of the capacitor | condenser of FIG. It is the elements on larger scale corresponding to a part of Drawing 1 showing the 1st modification of a positioning piece and a header tank. It is a figure equivalent to FIG. 2 which shows the 2nd modification of a positioning piece and a header tank. It is a figure equivalent to FIG. 2 which shows the 3rd modification of a positioning piece and a header tank.

  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 a condenser for a car air conditioner.

  Throughout the drawings, the same components and the same parts are denoted by the same reference numerals, and redundant description is omitted.

  In the following description, the front and back direction in FIG. 1 is the direction in which the wind flows, and the top and bottom, left and right in FIG.

  In the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum.

  In FIG. 1, a capacitor (1) is composed of a pair of aluminum header tanks (both ends are closed and spaced apart in the left-right direction with the longitudinal direction facing up and down). 2) Between the header tank (2) (3) and the header tanks (2) (3), the width direction is directed to the ventilation direction and the longitudinal direction is set to the left and right direction (perpendicular to the longitudinal direction and ventilation direction of both header tanks (2) (3) A plurality of flat aluminum heat exchanger tubes (4) arranged at intervals in the vertical direction with both ends thereof connected to both header tanks (2) (3), Between the adjacent heat exchange tubes (4) and above the upper heat exchange tube (4) and below the lower heat exchange tube (4), and brazed to the heat exchange tube (4) Aluminum corrugated fin (5), upper side of upper corrugated fin (5) and lower side of lower corrugated fin (5) It is arranged and a corrugated fin (5) brazed aluminum-made side plates (6).

  The right header tank (3) of the capacitor (1) is partitioned into two upper and lower header portions (3a) and (3b) by a partition member (7) below the central portion in the height direction. An aluminum refrigerant inlet member (8) communicating with the upper header portion (3a) is brazed to a portion above the partition member (7) in the right header tank (3), and the partition member in the right header tank (3) An aluminum refrigerant outlet member (9) communicating with the lower header portion (3b) is brazed to a portion below (7). In the illustrated example, the refrigerant inlet member (8) and the refrigerant outlet member (9) are heat exchanger components.

  Both header tanks (2) and (3) are made of an aluminum pipe having a brazing filler metal layer on at least an outer surface, for example, a base plate made of an aluminum brazing sheet having a brazing filler metal layer on both sides, and has both side edges. A tank body (11) having a plurality of tubular openings that are partially overlapped and brazed to each other and having a plurality of tube insertion holes (not shown) that are long in the ventilation direction, and both ends of the tank body (11) And an aluminum closing member (12) which is brazed to close the openings at both ends. Detailed illustration of the header tank body (11) is omitted. Further, the header tank body (11) may be made of an aluminum extruded tube having a brazing material sprayed on the outer peripheral surface.

  As shown in FIGS. 2 and 3, the side plate (6) has a longitudinal direction in the left-right direction (longitudinal direction of the heat exchange pipe (4)) and a width direction in the ventilation direction, and the corrugated fin (5). The belt-shaped main body (13) brazed to the right and left ends of the belt-shaped main body (13) are integrally provided in the vertical direction (the lower side plate (6 ) Projecting wall part (14) projecting upward) and projecting wall part (14) at the inner end in the vertical direction, projecting outward in the left-right direction, and header of header tank (2) (3) An insertion part (15) to be inserted into a through hole (11a) formed in the tank body (11) and a protruding wall part (14) at the left and right ends of each side plate (6) are provided integrally with the left and right sides. 1 side of the header tank (2) and (3), whichever is the same on the upstream side and downstream side of the header tank (2) (3) Position is and has been viewed from the direction of airflow header tank (2) (3) and partially overlapping positioning piece and (16). The positioning piece (16) is curved when viewed from above, and is in surface contact along the outer peripheral surface of the peripheral wall of the header tank body (11) of the header tank (2) (3).

  Of the surface facing the header tank (2) (3) side of the positioning pieces (16) of both side plates (6) and the outer peripheral surface of the peripheral wall of the header tank body (11) of the header tank (2) (3) On the other hand, in this case, a fitting protrusion (17) protruding to the back side of the sheet of FIG. 1 is formed on the surface of the positioning piece (16) facing the header tank (2) (3) side, and the header tank ( 2) On the peripheral wall of the header tank body (11) of (3), a fitting recess (18) is formed which is a through hole and into which the fitting projection (17) is fitted. The fitting convex part (17) of the positioning piece (16) is formed by performing a half punching process. The positioning piece (16) is brazed to the header tank body (11) in a state where the fitting convex portion (17) is fitted in the fitting concave portion (18).

  The capacitor (1) is manufactured by the method described below.

  First, a heat exchange pipe (4), fin (5), side plate (6), partition member (7), a pair of tubular aluminum header tank bodies (11) (tubular shape) having a brazing filler metal layer on at least the outer surface And a closed member (12), a refrigerant inlet member (8), and a refrigerant outlet member (9) are prepared. A plurality of pipe insertion holes are formed in the header tank body (11). The partition member (7) is combined with the header tank body (11) serving as the right header tank (3), and the refrigerant inlet member (8) and the refrigerant outlet member (9) are temporarily fixed by spot welding. Further, the closing member (12) is combined with both header tank bodies (11).

  Next, the heat exchange tube (4), the corrugated fin (5), and the side plate (6) are temporarily assembled on a flat reference surface. Next, on the reference surface, the header tank body (11) is arranged so that the fitting recess (18) faces upward, and the insertion portion (15) of the side plate (6) is inserted into the through hole (11a). At the same time, the fitting projection (17) is fitted into the fitting recess (18), and the positioning piece (16) is brought into surface contact with a part of the outer peripheral surface of the header tank body (11). To temporarily fix all parts. Thereafter, all parts are manufactured by batch brazing in a furnace.

  In the above-described embodiment, the header tanks (2) and (3) protrude from the header tanks (2) and (3) at the end portions on the side of the header tanks (2) and (3) in the strip-shaped main body (13) of both side plates (6). ) (3) Positioning piece (3) positioned on the same side of the upstream part and the downstream part of the ventilation direction and partially overlapping the header tank (2) (3) when viewed from the ventilation direction 16) is provided integrally, but is not limited thereto. For example, the positioning pieces may be integrally provided at the left and right ends of the band-shaped body of only one side plate, or the left and right ends of the band-shaped body of one side plate and the band-shaped body of the other side plate A positioning piece may be provided integrally with the left or right other end.

  4 to 6 show modifications of the positioning piece and the header tank used for the capacitor (1).

  In FIG. 4, the fitting convex part (17) of the positioning piece (16) and the fitting concave part (18) of the header tank body (11) are arranged in the longitudinal direction of the header tanks (2) and (3) (here, the upper and lower parts). A plurality of (directions) are formed at intervals.

  In FIG. 5, a fitting convex portion (20) is formed on the outer peripheral surface of the peripheral wall of the header tank body (11) of the header tanks (2) and (3), and penetrates the positioning piece (16) of the side plate (6). A fitting recess (21) that is formed of a hole and into which the fitting projection (20) is fitted is formed. The fitting convex part (20) on the outer peripheral surface of the peripheral wall of the header tank body (11) is formed by performing a half punching process. The positioning piece (16) is brazed to the header tank body (11) in a state where the fitting convex portion (20) is fitted in the fitting concave portion (21).

  In FIG. 6, a fitting convex portion (22) is formed on the side of the positioning piece (16) of the side plate (6) facing the header tank (2) (3) side and projecting to the back side of FIG. A fitting recess (23) is formed on the peripheral wall of the header tank body (11) of the header tanks (2) and (3). The fitting recess (23) is formed with a bottomed hole and into which the fitting projection (22) is fitted. The fitting convex part (22) of the positioning piece (16) and the fitting concave part (23) of the header tank main body (11) are each formed by half-cutting. The positioning piece (16) is brazed to the header tank body (11) in a state where the fitting convex portion (22) is fitted in the fitting concave portion (23).

  4 to 6, a plurality of fitting convex portions and fitting concave portions may be formed at intervals in the longitudinal direction of the header tank.

  The heat exchanger according to the present invention is suitably used as a condenser for a refrigeration cycle constituting a car air conditioner.

(1): Capacitor (heat exchanger)
(2) (3): Header tank
(4): Heat exchange pipe
(5): Corrugated fin
(6): Side plate
(8): Refrigerant inlet member (heat exchanger parts)
(9): Refrigerant outlet member (heat exchanger parts)
(11): Header tank body
(13): Strip body
(16): Positioning piece
(17) (20) (22): Mating convex
(18) (21) (23): Fitting recess

Claims (9)

A pair of header tanks spaced apart from each other with the longitudinal direction oriented in the same direction, and the longitudinal direction between the header tanks in a direction perpendicular to the longitudinal direction and the ventilation direction of the header tank The heat exchange tubes are arranged in a state spaced apart from each other and both ends are connected to both header tanks, between adjacent heat exchange tubes and outside the heat exchange tubes at both ends. A heat exchanger comprising: fins brazed to a pipe; and side plates each having a strip-like body brazed to the fins and arranged on the outside of the fins at both ends,
At least one header tank side end of the band-shaped body of at least one side plate of both side plates, and at the other header tank side end of the band-shaped body of at least one side plate of both side plates, A positioning piece that protrudes to the header tank side, is located on the same side of the upstream portion and the downstream portion in the ventilation direction from the header tank, and partially overlaps the header tank as viewed from the ventilation direction. A fitting projection is formed on one of the surface of the positioning piece facing the header tank side and the outer peripheral surface of the peripheral wall of the header tank, and the fitting projection is fitted on the other. A heat exchanger in which a fitting recess is formed. Heat exchanger parts are attached to either the upstream side portion or the downstream side portion in the ventilation direction of the peripheral wall of at least one of the header tanks, and the side plate positioning piece is used as a header. 2. The heat exchanger according to claim 1, wherein the heat exchanger is provided on a side to which a heat exchanger component is attached, of the upstream side portion and the downstream side portion from the tank. The heat exchanger according to claim 1 or 2, wherein a plurality of fitting convex portions and fitting concave portions are formed at intervals in the longitudinal direction of the header tank. The heat exchanger according to any one of claims 1 to 3, wherein positioning pieces of the side plates are provided at both header tank side ends of the side plates. The heat exchanger according to any one of claims 1 to 4, wherein the positioning piece of the side plate comes into surface contact along the outer peripheral surface of the peripheral wall of the header tank. The fitting convex part is formed by carrying out the half punching process to the positioning piece of a side plate, and the fitting concave part which consists of a through-hole is formed in the surrounding wall of a header tank. Heat exchanger. The fitting convex part is formed by performing half-punching processing on the peripheral wall of the header tank, and the fitting concave part including the through hole is formed in the positioning piece of the side plate. Heat exchanger. The fitting convex part is formed by performing half-punching processing on the positioning piece of the side plate, and the fitting concave part is formed by performing inward half-punching processing on the peripheral wall of the header tank. A heat exchanger according to any of the above. The heat according to any one of claims 1 to 8, wherein an insertion portion inserted into the header tank through a slit formed in a peripheral wall of the header tank is integrally provided at both ends of the belt-shaped main body of the side plate. Exchanger.

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