JP2008051456A - Heat exchanger and heat exchanging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchanging device capable of preventing degradation of heat exchanging performance. <P>SOLUTION: This heat exchanging device comprises a condenser 1 and an oil cooler 21 disposed at an upstream side in the ventilating direction of the condenser 1 and smaller than the condenser 1. Brackets 15, 35 are disposed on side plates 6, 26 of the condenser 1 and the oil cooler 21. The brackets 15, 35 have plate-shaped portions 17, 37 extending in the direction orthogonal to the longitudinal direction of heat exchange tubes 4, 24. The plate-shaped portion 17 of the bracket 15 of the condenser 1 is projected to an inner part with respect to the side plate 6, and the plate-shaped portion 37 of the bracket 35 of the oil cooler 21 is projected to an outer part with respect to the side plate 26. Inclination angles of the plate-shaped portions 17, 37 of the brackets 15, 35 to faces orthogonal to the longitudinal direction and in parallel with the ventilating direction of the heat exchange tubes 4, 24 are 0-45 degrees. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a heat exchanger and a heat exchange device used in a vehicle such as an automobile.

  For example, as a condenser of a refrigeration cycle that constitutes a car air conditioner of an automobile, a pair of headers spaced apart from each other and a plurality of heats arranged in parallel between both headers and having both ends connected to both headers Exchange tubes, fins disposed between adjacent heat exchange tubes and outside the heat exchange tubes at both ends, side plates disposed outside the fins at both ends, and plate-like plates provided on each side plate Each bracket has a plate-like portion extending in a direction perpendicular to the length direction of the heat exchange tube, and the plate-like portion is perpendicular to the length direction of the heat exchange tube. In addition, there is known one that is orthogonal to a plane parallel to the ventilation direction and is provided so as to protrude inward from the side plate and close a part of the ventilation gap (see Patent Document 1). The capacitor bracket described in Patent Document 1 is used when a capacitor is mounted on an automobile.

  However, in the capacitor described in Patent Document 1, the plate-like portion of each bracket is orthogonal to the length direction of the heat exchange tube, orthogonal to the plane parallel to the ventilation direction, and protrudes inward from the side plate. Therefore, the bracket has a large resistance to the air flow passing through the condenser, and the heat exchange performance of the condenser may be reduced.

  Depending on the type of automobile, an oil cooler may be disposed upstream of the condenser described in Patent Document 1 in the ventilation direction, and a heat exchange device in which both are connected and integrated may be used. The oil cooler includes a pair of headers spaced apart from each other, a plurality of heat exchange tubes arranged in parallel between the headers and connected to both headers at both ends, and adjacent heat exchange tubes It is provided with fins disposed between the heat exchange tubes between both ends and both sides, side plates disposed outside the fins at both ends, and two plate-like brackets provided on each side plate, It is smaller than the condenser as a whole, and each bracket extends in a direction perpendicular to the length direction of the heat exchange tube and has a plate-like portion protruding outward from the side plate. However, it is orthogonal to the plane parallel to the ventilation direction. The condenser and the oil cooler are connected and integrated by fixing the brackets of the two, thereby forming a heat exchange device.

However, in the heat exchange device described above, the plate-like portions of the condenser and oil cooler brackets are orthogonal to the plane parallel to the ventilation direction, so the condenser and the oil cooler bracket pass through the condenser. There is a possibility that the heat exchange performance of the condenser may be deteriorated due to a large resistance to the air flow.
Japanese Utility Model Publication No. 5-17376

  An object of the present invention is to provide a heat exchanger and a heat exchange device that can solve the above-described problems and prevent a decrease in heat exchange performance.

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

1) A pair of headers arranged at a distance from each other, a plurality of heat exchange tubes arranged in parallel between both headers and having both ends connected to both headers, and between adjacent heat exchange tubes And a heat exchanger comprising fins arranged outside the heat exchange tubes at both ends, and side plates arranged outside the fins at both ends,
At least one of the side plates is provided with a bracket, and the bracket has a plate-like portion extending in a direction perpendicular to the length direction of the heat exchange pipe, perpendicular to the length direction of the heat exchange pipe and ventilated. The heat exchanger whose inclination-angle of the plate-shaped part of a bracket with respect to a surface parallel to a direction is 0 to 45 degree | times.

  2) The heat exchanger according to 1) above, wherein a bracket is provided on each side plate.

  3) The heat exchange according to the above 1) or 2), wherein each side plate is provided with a plurality of brackets, and the inclination angles of all the brackets with respect to a plane perpendicular to the length direction of the heat exchange pipe and parallel to the ventilation direction are the same. vessel.

  4) A heat exchange device in which a plurality of the heat exchangers described in 1) to 3) above are arranged side by side in the ventilation direction and brackets of heat exchangers adjacent to each other in the ventilation direction are fixed.

  5) The heat exchange device according to 4) above, wherein the types of fluids flowing in all the heat exchangers are different.

  6) Two heat exchangers are arranged side by side in the ventilation direction, the heat exchanger located downstream in the ventilation direction is a condenser, and the heat exchanger located upstream in the ventilation direction is smaller than the condenser. The heat exchange device according to 4) or 5) above, wherein the plate-like portion of the condenser bracket protrudes inward from the side plate, and the plate-like portion of the bracket of the oil cooler protrudes outward from the side plate. .

  7) A vehicle provided with the heat exchanger according to any one of 1) to 3) above.

  8) A vehicle provided with the heat exchange device according to any one of 4) to 6) above.

  According to the heat exchangers of 1) and 2) above, the bracket has a plate-like portion extending in a direction perpendicular to the length direction of the heat exchange pipe, and is perpendicular to the length direction of the heat exchange pipe and Since the angle of inclination of the bracket plate-shaped portion with respect to the plane parallel to the ventilation direction is 0 to 45 degrees, the bracket plate-shaped portion is provided so as to protrude inward from the side plate and block a part of the ventilation gap. Even if it is, it will not become a big resistance with respect to the flow of the air to a heat exchanger, but the fall of the heat exchange performance of a heat exchanger can be suppressed.

  According to the heat exchanger of 3) above, the bracket can be provided on the side plate relatively easily.

  According to the heat exchange device of 4) above, even if the plate-like portion of the bracket of each heat exchanger protrudes inward from the side plate and closes a part of the ventilation gap, each heat exchange It does not become a big resistance with respect to the flow of the air to a heat exchanger, but can suppress the fall of the heat exchange performance of each heat exchanger.

  According to the heat exchange device of 6) above, the plate portion of the condenser bracket and the plate portion of the oil cooler bracket do not have a large resistance to the air flow to the condenser, and the heat exchange performance of the condenser is deteriorated. Can be suppressed.

  Embodiments of the present invention will be described below with reference to the drawings. This embodiment is a heat exchange device in which a condenser and an oil cooler to which a heat exchanger according to the present invention is applied are connected and integrated.

  In the following description, the top and bottom, left and right in FIG. 1 are referred to as top and bottom and left and right, the downstream side in the ventilation direction (the direction indicated by the arrow X in FIGS. 1 to 3) is the front, and the opposite side is the back. .

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

  1 and 2, the heat exchanging device includes a condenser (1) and an oil cooler (21) that is smaller than the condenser (1) and disposed behind the condenser (1) (upstream in the ventilation direction). I have.

  Capacitor (1) is vertically spaced between a pair of aluminum headers (2) (3) and a pair of headers (2) (3) that are vertically spaced and spaced from each other. Between the adjacent heat exchange pipes (4) and the upper and lower ends of the heat exchange pipes (4) and the aluminum heat exchange pipes (4), both ends of which are connected to both headers (2) (3). Aluminum corrugated fins (5) arranged outside the exchange pipe (4) and brazed to the heat exchange pipe (4), and corrugated fins (5) arranged outside the corrugated fins (5) at both upper and lower ends An aluminum side plate (6) brazed to each other and two plate-like brackets (15) provided on each side plate (6) at intervals in the left-right direction.

  The left and right headers (2) and (3) of the capacitor (1) are made of an aluminum cylindrical body (10) having both ends opened, and aluminum that is brazed to both ends of the cylindrical body (10) and closes the both end openings. And a closure member (11). The cylindrical body (10) is formed of an extruded aluminum material, or a base plate made of an aluminum brazing sheet having a brazing filler metal layer on both sides is formed into a cylindrical shape, and both side edges are partially overlapped with each other. It is formed by brazing, or is formed by brazing a plurality of members having brazing material layers on both sides.

  The left header (2) is divided into two upper and lower header parts (2a) and (2b) by a partition plate (7) above the central part in the height direction, and the right header (3) is the center in the height direction. The upper part (2a) of the left header (2) is brazed to the upper header part (2a) with the upper and lower header parts (3a) (3b) by the partition plate (7) below the part, and the right side An outlet member (9) is brazed to the lower header portion (3b) of the header (3). Then, the refrigerant that has flowed into the upper header portion (2a) of the left header (2) through the inlet member (8) flows to the right in the heat exchange pipe (4) and flows into the upper header of the right header (3). Flows into the upper part of the part (3a), flows downward in the upper header part (3a), and between the partition plate (7) of the left header (2) and the partition plate (8) of the right header (3). Flows left in the heat exchange pipe (4) at the height position, flows into the upper part in the lower header part (2b) of the left header (2), flows downward in the lower header part (2b), and flows to the right It flows rightward in the heat exchange pipe (4) located below the partition plate (7) of the header (3), flows into the lower header part (3b) of the right header (3), and exit member (9 ) Flows out of the capacitor (1).

  The heat exchange pipe (4) has a flat shape with the width direction directed in the front-rear direction, and a plurality of fluid passages are formed therein. The side plate (6) has a horizontal plate shape, and left and right ends thereof are formed with portions displaced inward in the vertical direction, and the distal ends of the displaced portions are inserted into the left and right headers (2) and (3). In this state, the corrugated fin (5) and the tubular bodies (10) of the headers (2) and (3) are brazed.

  Each bracket (15) has a horizontal plate-like base (16) formed integrally with the side plate (6), protruding rearward and having both upper and lower surfaces flush with the upper and lower surfaces of the side plate (6), and a horizontal plate base (16). It is formed integrally with the laterally outer edge of the plate-like base (16) and extends in the direction (vertical direction) perpendicular to the length direction of the heat exchange tube (4) and protrudes inward from the side plate (6). It consists of a vertical plate-like part (17) that blocks a part of the ventilation gap. As shown in FIG. 3, the inclination angle α of the vertical plate-like portion (17) of the bracket (15) with respect to the vertical plane (P) perpendicular to the length direction of the heat exchange pipe (4) and parallel to the ventilation direction is 0. Degree, that is, parallel to the ventilation direction. The inclination angle α is selected from the range of 0 to 45 degrees. When the inclination angle α is 0 to 45 degrees, the vertical plate-like portion (17) of the bracket (15) is provided so as to protrude inward from the side plate (6) and close a part of the ventilation gap. However, the resistance to the air flow to the condenser (1) does not become large, and the deterioration of the heat exchange performance of the condenser (1) can be suppressed. Note that the inclination angle α of the vertical plate portions (17) of both brackets (15) of each side plate (6) may be different from each other, or the inclination of the vertical plate portions (17) of both brackets (15). The directions may be different. That is, you may incline so that it may rotate to either the clockwise direction of FIG. 3, or the counterclockwise direction with respect to the said vertical surface (P).

  The oil cooler (21) has a pair of aluminum headers (22) that are smaller in the vertical and horizontal dimensions than the capacitor (1) and that extend in the vertical direction and are spaced in the horizontal direction. (23) and a plurality of aluminum heat exchanger tubes (24) arranged at intervals in the vertical direction between the headers (22) and (23) and having both ends connected to the headers (22) and (23). And an aluminum corrugated fin (25) brazed to the heat exchange pipe (24) between the adjacent heat exchange pipes (24) and outside the heat exchange pipes (24) at both upper and lower ends. An aluminum side plate (26) disposed on the outside of the corrugated fins (25) at the upper and lower ends and brazed to the corrugated fins (25), and two side plates (26) spaced in the left-right direction. The plate-shaped bracket (35) is provided.

  The left and right headers (22) and (23) of the oil cooler (21) are made of aluminum cylinders that are open at both ends and shorter than the cylinders (10) of the headers (2) and (3) of the condenser (1) ( 27) and an aluminum closing member (28) which is brazed to both ends of the cylindrical body (27) and closes the openings at both ends. The cylindrical body (27) is formed of an extruded aluminum material, or a base plate made of an aluminum brazing sheet having a brazing filler metal layer on both sides is formed into a cylindrical shape, and both side edges are partially overlapped with each other. It is formed by brazing, or is formed by brazing a plurality of members having brazing material layers on both sides.

  An inlet member (29) is brazed to the upper end of the left header (22), and an outlet member (30) is brazed to the lower end of the right header (3). Then, the refrigerant that has flowed into the left header (22) through the inlet member (29) flows to the right through all the heat exchange pipes (24) and flows into the right header (3), and the outlet member ( It flows out of the oil cooler (21) through 30).

  The heat exchanger pipe (24) of the oil cooler (21), the corrugated fin (25) and the side plate (26) are the heat exchanger pipe (4) of the condenser (1) except that the length in the left-right direction is short. The corrugated fin (5) and the side plate (6) have the same configuration.

  Each bracket (35) is formed integrally with the horizontal plate-like base (36) joined to the side plate (26) and the left and right outer edges of the horizontal plate-like base (36) to form the heat exchange pipe (24). The vertical plate-shaped portion (37) extends in the direction perpendicular to the length direction (vertical direction) and projects outward from the side plate (26) to block a part of the ventilation gap of the capacitor (1). . As shown in FIG. 3, the inclination angle of the vertical plate-like portion (37) of the bracket (35) with respect to the vertical plane (P) perpendicular to the length direction of the heat exchange pipe (4) and parallel to the ventilation direction is 0 degree. That is, it is parallel to the ventilation direction. The inclination angle and the inclination direction of the vertical plate portion (37) are 0 to 45 degrees so as to match the inclination angle α and the inclination direction of the vertical plate portion (17) in the bracket (15) of the capacitor (1). Selected from within the range. If the inclination angle is 0 to 45 degrees, even if the vertical plate-like portion (37) of the bracket (35) is provided so as to close a part of the ventilation gap of the capacitor (1), the capacitor (1) It does not become a great resistance to the air flow to the capacitor, and the deterioration of the heat exchange performance of the condenser (1) can be suppressed.

  As shown in FIG. 4, the bracket (15) of the condenser (1) and the bracket (35) of the oil cooler (21) are fixed as follows.

  Through holes (18) and (38) are formed in the vertical plate (17) of the bracket (15) of the capacitor (1) and the vertical plate (37) of the bracket (35) of the oil cooler (21), respectively. Has been. In addition, a positioning protrusion (19) extending in the vertical direction and protruding outward in the horizontal direction is integrally formed on the front side edge of the vertical plate-like portion (17) in the bracket (15) of the capacitor (1). Yes. Further, a clip-shaped nut member (40) is attached to the vertical plate-like portion (17) of the bracket (15) of the capacitor (1). The nut member (40) includes a pair of clamping claws (41) and (42) that clamp the vertical plate-like portion (17) from both the left and right sides. Through-holes (43) and (44) are formed in the both clamping claws (41) and (42), respectively. A short cylindrical flange portion (45) is integrally formed in a portion around the through hole (43) on the inner side surface in the left and right direction of the sandwiching claw (41) on the inner side in the left and right direction, and the through hole (43) A female screw (not shown) is formed on the inner peripheral surface of the flange portion and the inner peripheral surface of the flange portion (45). And the vertical plate-like portion (37) of the bracket (35) of the oil cooler (21) is brought into close contact with the laterally outer surface of the vertical plate-like portion (17) of the bracket (15) of the capacitor (1), With the front edge of the vertical plate (37) in contact with the positioning projection (19) on the front edge of the vertical plate (17), the male screw (46) is The through hole (38) of the vertical plate portion (37), the through hole (44) of the clamping claw (42) on the outer side in the left-right direction of the nut member (40), and the through hole (18 of the vertical plate portion (17)) ) And is screwed into the through hole (43) of the clamping piece (41) on the inner side in the left-right direction of the nut member (40) and the female screw on the inner peripheral surface of the flange portion (45), so that both brackets ( 15) (35) are fixed to each other, and the condenser (1) and the oil cooler (21) are connected and integrated.

  5 and 6 show another embodiment of a heat exchange device in which a condenser (1) and an oil cooler (21) are connected and integrated.

  5 and 6, the vertical plate portion (17) of the bracket (15) of the condenser (1) and the vertical plate portion (37) of the bracket (35) of the oil cooler (21) are respectively heat exchange tubes. It is inclined with respect to a vertical plane (P) perpendicular to the length direction of (4) and parallel to the ventilation direction, and the inclination angle α is 45 degrees. Further, the inclination directions of the vertical plate portions (17) and (37) of the two brackets (15) and (35) in the side plates (6) and (26) are different. That is, the vertical plate portions (17) and (37) of the right brackets (15) and (35) are inclined so as to rotate 45 degrees clockwise in FIG. The vertical plate portions (17) and (37) of the rackets (15) and (35) are inclined so as to rotate 45 degrees counterclockwise in FIG. 6 with respect to the vertical plane (P). Note that the inclination angles α of the vertical plate portions (17) and (37) of both brackets (15) and (35) of each side plate (6) and (26) may be different from each other, or both brackets (15) The inclination direction of the vertical plate portion (17) may be the same.

  Other configurations are the same as those of the heat exchange device shown in FIGS. 1 to 4, and the same reference numerals are given to the same portions.

1 is a perspective view showing an embodiment of a heat exchange device in which a condenser and an oil cooler to which a heat exchanger according to the present invention is applied are connected and integrated. It is a partially cutaway top view of the heat exchange apparatus of FIG. It is a partial expanded horizontal sectional view which shows the principal part of the heat exchange apparatus of FIG. It is a partial expansion perspective view which shows the fixing method of the bracket of a capacitor | condenser and the bracket of an oil cooler. It is a figure equivalent to FIG. 2 which shows other embodiment of the heat exchange apparatus which connects and integrates the capacitor | condenser and oil cooler to which the heat exchanger by this invention is applied. It is a figure equivalent to FIG. 3 which shows the principal part of the heat exchange apparatus of FIG.

Explanation of symbols

(1): Capacitor (heat exchanger)
(2) (3): Header
(4): Heat exchange pipe
(5): Corrugated fin
(6): Side plate
(15): Bracket
(17): Vertical plate
(21): Oil cooler (heat exchanger)
(22) (23): Header
(24): Heat exchange pipe
(25): Corrugated fin
(26): Side plate
(35): Bracket
(37): Vertical plate

Claims (8)

A pair of headers spaced from each other, a plurality of heat exchange tubes arranged in parallel between both headers and having both ends connected to both headers, and between and between adjacent heat exchange tubes In a heat exchanger comprising fins arranged outside the heat exchange pipes and side plates arranged outside the fins at both ends,
At least one of the side plates is provided with a bracket, and the bracket has a plate-like portion extending in a direction perpendicular to the length direction of the heat exchange pipe, perpendicular to the length direction of the heat exchange pipe and ventilated. The heat exchanger whose inclination-angle of the plate-shaped part of a bracket with respect to a surface parallel to a direction is 0 to 45 degree | times. The heat exchanger according to claim 1, wherein a bracket is provided on each side plate. The heat exchanger according to claim 1 or 2, wherein a plurality of brackets are provided on each side plate, and the inclination angles of all the brackets with respect to a plane orthogonal to the length direction of the heat exchange pipe and parallel to the ventilation direction are the same. A heat exchange device in which a plurality of heat exchangers according to claim 1 are arranged side by side in a ventilation direction, and brackets of heat exchangers adjacent to each other in the ventilation direction are fixed. The heat exchange apparatus according to claim 4, wherein the types of fluids flowing through all the heat exchangers are different. Two heat exchangers are arranged side by side in the ventilation direction, the heat exchanger located downstream in the ventilation direction is a condenser, and the heat exchanger located upstream in the ventilation direction is a smaller oil cooler than the condenser 6. The heat exchange device according to claim 4, wherein the plate-like portion of the condenser bracket protrudes inward from the side plate, and the plate-like portion of the oil cooler bracket protrudes outward from the side plate. The vehicle provided with the heat exchanger in any one of Claims 1-3. A vehicle comprising the heat exchange device according to any one of claims 4 to 6.

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