JP2014126314A - Compound heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compound heat exchanger capable of avoiding damaging a water-cooled condenser at a time of fixing the water-cooled condenser and arranging the water-cooled condenser in a desired direction.SOLUTION: A compound heat exchanger 1 of the invention comprises: a sub-radiator 20 having an outflow-side tank 23 provided on a side thereof; and a water-cooled condenser 30 inserted into the outflow-side tank 23 from an upper insertion port 23A1 formed in the outflow-side tank 23. Heat exchange is carried out between water-cooling cooling water flowing in the outflow-side tank 23 and air-conditioning refrigerant flowing in the water-cooled condenser 30. A sealing plate 35 sealing the upper insertion port 23A1 and a cap 36 pressing only a peripheral edge 35e of the sealing plate 35 toward the outflow-side tank 23 are provided. The sealing plate 35 is closely attached to a peripheral edge surface of the upper insertion hole 23A1 by a pressing force of the cap 36, thereby fixing the water-cooled condenser 30 to the outflow-side tank 23.

Description

  The present invention relates to a composite heat exchanger mounted on an automobile.

  Conventionally, as a combined heat exchanger mounted on an automobile, a main radiator for cooling engine cooling water, a sub-radiator for cooling water cooling water for a water-cooled charge air cooler, and a sub-radiator are discharged. Some include a water-cooled condenser that exchanges heat between the water-cooling cooling water and the air-conditioning refrigerant, and an air-cooling condenser that cools the air-conditioning refrigerant that flows out of the water-cooled condenser.

  An example of a water-cooled condenser used in this type of composite heat exchanger will be described with reference to FIGS. As shown in FIG. 16, the water-cooled condenser 100 is provided at the side of the sub-radiator 101 so as to exchange heat with the air-conditioning refrigerant using the water-cooling cooling water flowing out from the sub-radiator 101. It is arranged inside the outflow side tank 103. A circular insertion port 105 into which the water-cooled condenser 100 is inserted is formed on the upper surface of the outflow side tank 103.

  The water-cooled condenser 100 includes a screw-type cap 110 screwed into the insertion port 105, a pair of inflow pipe 120A and outflow pipe 120B through which the air-conditioning refrigerant flows in or out, and a flat water-cooled tube 130 through which the air-conditioning refrigerant passes. And a small tank 150 in which the air-conditioning refrigerant that has passed through the water-cooled tube 130 makes a U-turn. The water-cooled condenser 100 is fixed to the upper surface of the outflow side tank 103 by a screw-type cap 110.

JP 2000-180089 A

  By the way, as shown in FIG. 17A, the flat water cooling tube 130 accommodated in the outflow side tank 103 of the sub radiator 101 is a flow of cooling water for water cooling flowing in the sub radiator tube 107 of the sub radiator 101. Arranging along the direction is preferable from the viewpoint of heat exchange efficiency.

  However, in the above-described conventional water-cooled condenser 100, when the screw-type cap 110 is screwed into the insertion port 105 of the outflow side tank 103, the water-cooled tube 130 is coupled with the screw-type cap 110 as shown in FIG. Rotate together. For this reason, there was a problem that the direction of the water cooling tube 130 could not be fixed in a desired direction.

  Here, it is conceivable that rotation regulating means for positioning the water cooling tube 130 in a desired direction is provided in the outflow side tank 103 and the water cooling condenser 100 is fixed in the outflow side tank 103 with a screw-type cap or the like. However, if the water-cooled condenser 100 is fastened in the outflow side tank 103 simply using a screw-type cap, a large stress (rotational load) acts on the water-cooled condenser 100 in contact with the rotation regulating means in this process, and the water-cooled condenser 100 is damaged. I will receive it.

  Therefore, the present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a composite heat exchanger that does not cause damage as much as possible when the water-cooled condenser is fixed and can arrange the water-cooled condenser in a desired direction. And

  In order to solve the above-described problems, the present invention has the following features. First, the first feature of the present invention is that a first heat exchanger having a first tank provided on a side thereof and a second heat exchanger inserted into the first tank through an insertion port formed in the first tank. And a heat exchanger that exchanges heat between a first refrigerant flowing in the first tank and a second refrigerant flowing in the second heat exchanger, wherein the second heat exchanger Is provided with a sealing portion that closes the insertion port and a closing portion that presses only the peripheral edge of the sealing portion toward the first tank, and the sealing portion is inserted by the pressing force of the closing portion. The gist is that the second heat exchanger is fixed to the first tank in close contact with the peripheral surface of the mouth.

  As another feature, the closing portion is configured by a cap that is open on an inner peripheral side and presses only a peripheral portion of the sealing portion, and the cap is attached around the insertion port of the first tank. The mounting portion is provided with a guide portion that guides the rotation of the cap, and a fixing portion that fixes the cap guided by the guide portion, and the cap is fixed by the fixing portion. The cap may press only the peripheral portion of the sealing portion by rotating to the lock position.

  As another feature, the closing portion is constituted by a pair of sandwiching divided bodies that are combined with each other, and an attachment portion to which the cap is attached is provided around the insertion port of the first tank. By sandwiching the peripheral part of the sealing part arranged on the attachment part with the pair of sandwiching divided bodies over the entire circumference, the pair of sandwiching divided parts presses only the peripheral part of the sealing part. There may be.

  As another feature, the sealing portion may be formed of thin plate-like aluminum.

  As another feature, the second heat exchanger includes a second tube, a pair of second tanks provided at both ends of the second tube, and a pair of refrigerant inflow / outflow fixed respectively to the second tanks. And the sealing part may be fixed to one of the refrigerant inflow / outflow part, the second tube, or the second tank.

  As another feature, the sealing portion may be integrally formed with one of the refrigerant inflow / outflow portions by brazing.

  As another feature, the sealing portion includes a peripheral portion of the sealing portion that is pressed by the closing portion, and the first portion that is provided on the inner peripheral side of the peripheral portion of the sealing portion and passes through the first tank. The refrigerant contact portion may contact the refrigerant, and the refrigerant contact portion (35c) may be formed more firmly than a peripheral edge portion of the sealing portion.

  As another feature, the refrigerant contact portion may be provided with a bead portion protruding outward.

  As another feature, the refrigerant contact portion may be formed thicker than a peripheral edge portion of the sealing portion.

  As another feature, the first heat exchanger may be a sub-radiator, and the second heat exchanger may be a water-cooled condenser or an oil cooler.

  According to the feature of the present invention, the closing portion presses the peripheral portion of the sealing portion, and the sealing portion is brought into close contact with the peripheral surface of the insertion port by the pressing force of the closing portion, so that the second heat exchanger is fixed to the first tank. Is done. Accordingly, for example, until the first tank is mounted by the rotation of the closing portion, the contact area between the closing portion and the sealing portion is small, so that the rotational force acting on the sealing portion of the closing portion may be small. For this reason, it is possible to arrange the water-cooled condenser in a desired direction without causing damage as much as possible when the water-cooled condenser is fixed.

FIG. 1 is an overall perspective view showing the composite heat exchanger according to the first embodiment. FIG. 2 is a front view showing the composite heat exchanger according to the first embodiment. FIG. 3 is a configuration diagram illustrating a heat exchange system to which the composite heat exchanger according to the first embodiment is applied. FIG. 4 is a front view showing the vicinity of the outflow side tank of the sub-radiator according to the first embodiment. FIG. 5 is an exploded perspective view showing the outflow side tank and the water-cooled condenser of the sub radiator according to the first embodiment. FIG. 6 is an enlarged exploded perspective view showing the outflow side tank and the water-cooled condenser of the sub-radiator according to the first embodiment. 7A and 7B are a front view and a side view of the outflow side tank of the sub-radiator according to the first embodiment, and FIG. 7C is a view of the sub-radiator according to the first embodiment. It is sectional drawing which shows a part of outflow side tank. FIG. 8 is a perspective view showing the vicinity of the outflow side tank of the sub-radiator and the inflow side tank of the air-cooling condenser according to the first embodiment. FIG. 9 is an exploded perspective view showing the water-cooled condenser according to the first embodiment. FIG. 10: is sectional drawing which shows a part of the outflow side tank and sealing plate of the sub radiator which concerns on the example of a change (the 1). FIG. 11: is sectional drawing which shows a part of the outflow side tank and sealing plate of the sub radiator which concerns on 2nd Embodiment (the 2). FIG. 12 is a perspective view showing the outflow side tank and the air-cooled condenser of the sub-radiator according to the second embodiment. 13A is a partial cross-sectional view of FIG. 12, and FIG. 13B is an enlarged cross-sectional view of a part of FIG. FIG. 14 is a cross-sectional view showing a part of the outflow side tank of the sub-radiator according to the third embodiment. FIG. 15 is a cross-sectional view illustrating a part of the outflow side tank of the sub-radiator according to the fourth embodiment. FIG. 16 is a perspective view showing the vicinity of a water-cooled condenser according to the background art. FIGS. 17A and 17B are schematic plan views showing a part of the water-cooled condenser according to the background art.

  Next, an embodiment of a composite heat exchanger according to the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones. Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

[First Embodiment]
(Configuration of combined heat exchanger)
First, the configuration of the composite heat exchanger 1 according to the first embodiment will be described with reference to the drawings. FIG. 1 is an overall perspective view showing a composite heat exchanger 1 according to the first embodiment. FIG. 2 is a front view showing the composite heat exchanger 1 according to the first embodiment. FIG. 3 is a configuration diagram illustrating a heat exchange system to which the composite heat exchanger 1 according to the first embodiment is applied. FIGS. 4-7 is a figure which shows the vicinity of the outflow side tank 23 of the sub radiator 20 which concerns on 1st Embodiment.

  As shown in FIGS. 1 to 3, the composite heat exchanger 1 includes a main radiator 10 (see FIG. 3), a sub radiator 20 as a first heat exchanger, and an outflow as a first tank of the sub radiator 20. A water-cooled condenser 30 serving as a second heat exchanger accommodated in the side tank 23 and an air-cooled condenser 40 provided below the sub-radiator 20 are provided. In the composite heat exchanger 1, the water-cooling cooling water as the first refrigerant flowing in the outflow side tank 23 and the air-conditioning refrigerant as the second refrigerant flowing in the water-cooled condenser 30 exchange heat to exchange heat. The air-conditioning refrigerant flows into the inflow side tank 42 of the air-cooling condenser 40.

  Specifically, the main radiator 10 cools the engine coolant for the engine 2. As shown in FIG. 3, the main radiator 10 is provided on the upstream side of the cooling air of the motor fan 4. The main radiator 10 has a plurality of tubes (not shown) through which the engine cooling water flows, and exchanges heat with cooling air flowing outside the tubes. The engine coolant is circulated by the pump 5 (see FIG. 3).

  The sub radiator 20 cools the cooling water for water cooling for the water cooling charge air cooler 3 (water cooling CAC). As shown in FIGS. 1 to 3, the sub-radiator 20 is disposed on the upstream surface side of the cooling air of the main radiator 10 and in the upper half region. The sub-radiator 20 includes a plurality of sub-radio tubes 21 that exchange heat with cooling air that flows through the outside of the water-cooling cooling water, and a pair of both ends of the sub-radio tubes 21 that are connected to each other. And a sub-radio tank (hereinafter referred to as an inflow side tank 22 and an outflow side tank 23). The cooling water for water cooling is circulated by the pump 6 (see FIG. 3).

  The inflow side tank 22 is formed with an inflow portion 22in into which the cooling water for water cooling flows. On the other hand, the outflow side tank 23 is formed with an outflow portion 23out through which cooling water for water cooling flows out. As shown in FIGS. 1 and 2, the outflow side tank 23 is disposed outside an inflow side tank 42 described later of the air cooling condenser 40. As shown in FIGS. 4 to 7, the outflow side tank 23 is provided with a storage chamber 23 </ b> A in which the water-cooled condenser 30 is stored. The storage chamber 23A is formed in a rectangular cross section so that the water-cooled condenser 30 (water-cooled tube 31 described later) does not rotate in the storage chamber 23A.

  An upper insertion port 23A1 through which the water-cooled condenser 30 is inserted is provided above the accommodation chamber 23A. As shown in FIGS. 5 to 7, a step portion 23 </ b> B in which an O-ring 34 (to be described later) of the water-cooled condenser 30 is disposed is formed on the periphery of the upper insertion port 23 </ b> A <b> 1. A mounting portion 23T to which a later-described cap 36 of the water-cooled condenser 30 is mounted is provided around the upper insertion port 23A1. The mounting portion 23T is provided with a guide portion 23C that guides the rotation of the cap 36, and a fixing portion 23D (see FIG. 7) that fixes the cap 36 guided by the guide portion.

  A lower opening 23A2 formed at a position facing the upper insertion port 23A1 is provided below the accommodation chamber 23A. The lower opening 23A2 is formed by a cylindrical tube portion, and a refrigerant outflow portion 38, which will be described later, of the water-cooled condenser 30 is inserted therein.

  The water-cooled condenser 30 performs heat exchange between the water-cooling cooling water flowing out from the sub-radiator 20 and the air-conditioning refrigerant. 4 to 7, the water-cooled condenser 30 is accommodated in the outflow side tank 23 of the sub-radiator 20, and the water-cooled condenser 30 and the air-cooled condenser 40 are connected in series in the refrigeration cycle with the water-cooled condenser 30 upstream. It is connected. Details of the water-cooled condenser 30 will be described later.

  The air-cooled condenser 40 cools the air-conditioning refrigerant that flows out of the water-cooled condenser 30. As shown in FIGS. 1 to 3, the air-cooling condenser 40 is disposed in the lower half region of the lower side of the sub radiator 20 on the upstream surface side of the cooling air of the main radiator 10. The air-cooling condenser 40 is disposed on substantially the same plane as the sub-radiator 20 along a direction orthogonal to the flow of cooling air. The air-cooling condenser 40 includes an air-cooling tube 41 that exchanges heat with cooling air that passes through the outside of the air-conditioning refrigerant, and an air-cooling tank (hereinafter referred to as an inflow side tank 42) to which both ends of the air-cooling tube 41 are connected. And an outflow side tank 43).

  As shown in FIGS. 1 and 2, the inflow side tank 42 is disposed inside the outflow side tank 23 of the sub-radiator 20. That is, a space S in which the lower opening 23A2 can be disposed is provided outside the inflow side tank 42 and below the sub radiator 20.

  The inflow side tank 42 is formed with an inflow portion 42A into which the air-conditioning refrigerant before heat exchange by the air-cooling condenser 40 flows and an outflow portion 42B from which the air-conditioning refrigerant after heat exchange with the air-cooling condenser 40 flows out. Has been. The inflow portion 42A and the outflow portion 42B are provided at positions separated from each other, the inflow portion 42A is provided above the inflow side tank 42, and the outflow portion 42B is provided below the inflow side tank 42. A relay pipe 50 communicating with the inflow side tank 42 is connected to the inflow part 42A (see FIGS. 1 to 2 and FIG. 8). One end of the relay pipe 50 is connected to a later-described refrigerant outflow portion 38 of the water-cooled condenser 30, and the other end of the relay pipe 50 is brazed to the inflow side tank 42.

  In addition, a liquid tank 60 in which the air-conditioning refrigerant that has flowed through the upper half region of the air-cooling condenser 40 is provided at the side of the outflow side tank 43 (FIGS. 1 and 2). That is, the liquid tank 60 is connected to an outflow side tank 43 provided on the opposite side of the inflow side tank 42 into which the air conditioning refrigerant flows. The air-conditioning refrigerant in the liquid tank 60 passes through the lower half region of the air-cooling condenser 40 and flows out from the outflow portion 42B.

(Configuration of water-cooled condenser)
Next, the configuration of the above-described water-cooled condenser 30 will be described with reference to the drawings. FIG. 9 is an exploded perspective view showing the water-cooled capacitor 30 according to the first embodiment.

  As shown in FIG. 9, the water-cooled condenser 30 includes a plurality of water-cooled tubes 31 (second tubes), a pair of water-cooled tanks 32 and 33 (second tanks), an O-ring 34, and a disk-shaped sealing plate 35 ( A sealing member), a cap 36 (blocking portion), a pair of refrigerant inflow / outflow portions (hereinafter referred to as a refrigerant inflow portion 37 and a refrigerant outflow portion 38), and two shaft seals 39.

  Each of the water cooling tubes 31 exchanges heat between the air conditioning refrigerant passing through the inside and the water cooling cooling water passing through the outflow side tank 23 on the outside thereof. Each water cooling tube 31 is provided between a pair of water cooling tanks 32 and 33. Each water cooling tube 31 is formed by extrusion molding, for example. The water cooling tube 31 may be an inner fin tube, a tube having a refrigerant passage, a pipe body, or the like.

  The water cooling tanks 32 and 33 are connected to both ends of each water cooling tube 31, respectively. The water cooling tanks 32 and 33 are mounted on the inner plates 32A and 33A in which fitting holes 32A1 and 33A1 into which both ends of the water cooling tubes 31 are fitted, and the inner plates 32A and 33A, respectively, and the air conditioning refrigerant passes therethrough. It is comprised by the outer side plates 32B and 33B in which possible refrigerant | coolant passage parts 32B1 and 33B1 were formed.

  The O-ring 34 is disposed in a step portion 23 </ b> B (see FIGS. 5 to 7) formed on the upper surface of the outflow side tank 23. A sealing plate 35 is disposed above the O-ring 34.

  The sealing plate 35 is in contact with the periphery of the upper insertion port 23A1 of the outflow side tank 23 on the upper side of the O-ring 34 and closes the upper insertion port 23A1, so that the cooling water for cooling water passing through the outflow side tank 23 flows out. Is preventing. The sealing plate 35 is made of thin plate aluminum. The sealing plate 35 is integrally formed with the refrigerant inflow portion 37 by brazing.

  The sealing plate 35 is provided on the inner peripheral side of the peripheral portion 35e of the sealing plate 35 pressed by the cap 36 and on the inner peripheral side of the peripheral portion 35e of the sealing plate 35, and passes through the outflow side tank 23 of the sub-radiator 20. And a refrigerant contact portion 35c in contact with the refrigerant. A refrigerant passage hole 35A that is fixed to the refrigerant inflow portion 37 and through which the air conditioning refrigerant passes is formed in the refrigerant contact portion 35c. Further, the refrigerant contact portion 35 c is formed more firmly than the peripheral edge portion 35 e of the sealing plate 35. In the first embodiment, the refrigerant contact portion 35c is formed more firmly than the peripheral edge portion 35e of the sealing plate 35 by providing a bead portion 35B protruding toward the cap 36 side. A cap 36 is attached to the upper surface of the outflow side tank 23 so as to press the sealing plate 35 toward the O-ring 34.

  The cap 36 presses only the peripheral edge 35e of the sealing plate 35 toward the outflow side tank 23 side. The cap 36 is larger on the inner peripheral side than the refrigerant inflow portion 37 and is open so as not to contact the refrigerant inflow portion 37. The cap 36 has claw portions 36 </ b> A provided at two locations on the lower peripheral surface, and pressing protrusions 36 </ b> B (see FIG. 7C) that protrude to the back side of the cap 36. The claw portion 36 </ b> A rotates along the guide portion 23 </ b> C (see FIGS. 5 and 6) formed on the outer peripheral surface of the upper portion of the outflow side tank 23 and rotates to the lock position where the fixing portion 23 </ b> D fixes. When the claw portion 36A rotates to the locked position, the pressing convex portion 36B presses only the peripheral edge portion 35e of the sealing plate 35. The sealing plate 35 is brought into close contact with the peripheral surface of the upper insertion port 23 </ b> A <b> 1 by the pressing force of the pressing protrusion 36 </ b> B of the cap 36, and the water-cooled condenser 30 is fixed to the outflow side tank 23.

  The refrigerant inflow portion 37 and the refrigerant outflow portion 38 are fixed to the water cooling tanks 32 and 33, respectively, and are provided at positions (upper surface and lower surface) of the outflow side tank 23 facing each other.

  Specifically, the refrigerant inflow portion 37 is an inlet through which the air-conditioning refrigerant flows into the water-cooled condenser 30, and is fixed to the upper outer plate 32B (the peripheral surface of the refrigerant passage portion 32B1) with the sealing plate 35 interposed therebetween. The Then, one side (upper side) of the water cooling condenser 30 provided with the refrigerant inflow portion 37 and the water cooling tank 32 described above is fixed at the position of the upper insertion port 23A1, and the refrigerant inflow portion 37 is outside the upper insertion port 23A1. Exposed.

  On the other hand, the refrigerant outflow portion 38 is an outlet through which the air-conditioning refrigerant flows out to the water-cooled condenser 30, and is fixed to the lower outer plate 33B (the peripheral surface of the refrigerant passage portion 33B1). The refrigerant outflow portion 38 is formed by a cylindrical tube portion, and is disposed on the inner periphery of the cylindrical lower opening 23 </ b> A <b> 2 in the outflow side tank 23 of the sub radiator 20. The other side (lower side) of the water cooling condenser 30 provided with the refrigerant outflow portion 38 and the water cooling tank 33 described above is fixed at the position of the lower opening 23A2 different from the upper insertion port 23A1, and the refrigerant outflow portion 38 is provided. Is exposed to the outside of the lower opening 23A2. The exposed refrigerant outflow portion 38 communicates with the relay pipe 50 and is connected to the inflow side tank 42 via the relay pipe 50.

  A shaft seal groove 38A into which the shaft seal 39 is inserted is formed on the outer periphery of the refrigerant outflow portion 38. The refrigerant outflow portion 38 is inserted into and supported by the lower opening 23A2, and is disposed in the space S (see FIG. 2).

  The shaft seal 39 is inserted into the shaft seal groove 38A of the refrigerant outflow portion 38, whereby the outer periphery of the lower opening 23A2 and the lower opening 23A2 with the refrigerant outflow portion 38 penetrating through the lower opening 23A2. It is interposed between the inner periphery of the.

(Refrigerant flow)
Next, the flow of each refrigerant in the composite heat exchanger 1 described above will be described with reference to FIG.

  As shown in FIG. 3, air (intake air) supplied to the engine 2 is compressed by the turbo unit 7 using exhaust gas and becomes high temperature. For this reason, this high-temperature compressed air (intake air) is cooled by the water-cooled charge air cooler 3. Thereby, the density of the air (intake) supplied to the engine 2 is improved, and the combustion efficiency of the engine 2 is improved.

  The water-cooled charge air cooler 3 exchanges heat between the air (intake air) supplied to the engine 2 and the cooling water to cool the air (intake air) supplied to the engine 2. The cooling water for water cooling in the water-cooled charge air cooler 3 circulates in the sub-radiator 20, and after performing heat exchange with the air-conditioning refrigerant passing through the water-cooled condenser 30 in the outflow side tank 23, the water-cooled charge air It flows into the cooler 3.

  The sub-radiator 20 circulates and cools the cooling water flowing into the water-cooled charge air cooler 3. However, the sub-radiator 20 is not the water-cooled charge air cooler 3, but is a refrigerant (for example, used for various electronic devices mounted on a vehicle). For example, cooling water used for an inverter or the like may be circulated and cooled.

  On the other hand, the air-conditioning refrigerant that has been heated to high temperature and pressure by the compressor (compressor) 8 in the refrigeration cycle first flows into the water-cooled condenser 30 and then flows out into the air-cooled condenser 40. The air-conditioning refrigerant that has flowed into the air-cooling condenser 40 passes through the upper half area of the air-cooling condenser 40 and the liquid tank 60, and then flows out of the outflow portion 42B through the lower half area of the air-cooling condenser 40. Yes.

(Action / Effect)
In the first embodiment described above, the cap 36 presses the peripheral edge portion 35e of the sealing plate 35, and the sealing plate 35 comes into close contact with the peripheral surface of the upper insertion port 23A1 by the pressing force of the cap 36, and the water-cooled condenser 30 flows out. It is fixed to the side tank 23. Thus, until the cap 36 is mounted on the outflow side tank 23 by the rotation of the cap 36, the contact area between the cap 36 and the sealing portion is small, so that the rotational force acting on the sealing plate 35 of the cap 36 can be small. That is, the rotational force of the cap 36 is not easily transmitted from the sealing plate 35 to the water cooling tube 31, and the rotation of the cap 36 can prevent the water cooling tube 31 from rotating. For this reason, it is possible to arrange the water-cooled condenser 30 in a desired direction without causing damage as much as possible when the water-cooled condenser 30 is fixed.

  In particular, since the storage chamber 23A is formed in a rectangular cross section, the water-cooled condenser 30 can be more reliably disposed in a desired direction without rotating the water-cooling tube 31 of the water-cooled condenser 30 in the storage chamber 23A.

  In the first embodiment, the sealing plate 35 is made of thin aluminum plate. As a result, even if the water-cooled condenser 30 expands and contracts due to thermal expansion, the sealing plate 35 can follow somewhat, and can respond to the expansion and contraction of the water-cooled condenser 30.

  In the first embodiment, the sealing plate 35 is fixed to the refrigerant inflow portion 37. Thereby, the assembly of the water-cooled capacitor 30 is facilitated.

  In the first embodiment, the bead portion 35B is provided in the refrigerant contact portion 35c of the sealing plate 35, so that the refrigerant contact portion 35c is formed more firmly than the peripheral edge portion 35e. Thereby, the strength of the sealing plate 35 can be secured by the bead portion 35B of the refrigerant contact portion 35c against the internal pressure of the air conditioning refrigerant passing through the outflow side tank 23. Further, even if the dimensional tolerance of the outflow side tank 23 (stepped portion 23B) is large, the peripheral portion 35e of the sealing plate 35 is deformed by the pressing force of the cap 36, and the sealing plate 35 is reliably pressed toward the O-ring 34. Can do.

  In the first embodiment, since the second heat exchanger is the water-cooled condenser 30, the air-conditioning refrigerant before flowing into the air-cooled condenser 40 can be precooled, which contributes to the compactness of the air-cooled condenser 40.

(Example of change)
Next, a modified example of the sealing plate 35 of the water-cooled condenser 30 according to the first embodiment will be described with reference to the drawings. 10 and 11 are sectional views showing the vicinity of the upper insertion port 23A1 of the outflow side tank 23 and the sealing plate 35 of the sub-radiator 20 according to the modified example. In addition, the same code | symbol is attached | subjected to the same part as the air-cooling capacitor 40 which concerns on 1st Embodiment mentioned above, and a different part is mainly demonstrated.

  In the modified example, the configuration of the sealing plate 35 of the first embodiment described above is different. Specifically, as shown in FIG. 10, the sealing plate 35 is formed in a disk shape as in the first embodiment described above, and includes a peripheral edge portion 35 e of the sealing plate 35 and a refrigerant contact portion 35 c. . The refrigerant contact portion 35c is formed to be thicker than the peripheral edge portion 35e of the sealing plate 35 by being formed thicker than the peripheral edge portion 35e of the sealing plate 35 (T1> T2).

  In the modified example described above, the pressing of the cap 36 is performed while ensuring the strength of the sealing plate 35 against the internal pressure of the air-conditioning refrigerant passing through the outflow side tank 23, as in the same operation and effect as the first embodiment described above. The peripheral edge portion 35e of the sealing plate 35 is deformed by the pressure, and the sealing plate 35 can be reliably pressed toward the O-ring 34.

  Here, in the modified example, the sealing plate 35 has been described as being formed in a disk shape, but the present invention is not limited to this, and as shown in FIG. 11, the peripheral portion 35e is more than the refrigerant contact portion 35c. It may be formed in a flange shape that is raised one step. Even in this case, the refrigerant contact portion 35c is formed thicker than the peripheral edge portion 35e of the sealing plate 35 (T1> T2).

[Second Embodiment]
Next, a water-cooled capacitor 30 according to the second embodiment will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same part as the composite heat exchanger 1 which concerns on 1st Embodiment mentioned above, and a different part is mainly demonstrated.

(Configuration of water-cooled condenser)
First, the configuration of the water-cooled capacitor 30 according to the second embodiment will be described with reference to the drawings. FIG. 12 is a perspective view showing the outflow side tank 23 and the water-cooled condenser 30 of the sub radiator 20 according to the second embodiment. 13A is a partial cross-sectional view of FIG. 12, and FIG. 13B is an enlarged cross-sectional view of a part of FIG.

  In the second embodiment, the configuration of the water-cooled condenser 30 is slightly different from the configuration described in the above-described embodiment. As shown in FIGS. 12 and 13, a part of one water cooling tank 32 of the water cooling condenser 30 is exposed to the outside of the outflow side tank 23 of the sub radiator 20.

  Specifically, the water-cooled condenser 30 includes a plurality of water-cooled tubes 31, a pair of water-cooled tanks 32 and 33, an O-ring 34, a refrigerant inflow portion 37, and a refrigerant outflow portion, as in the first embodiment described above. 38.

  The upper water cooling tank 32 includes an inner plate 32A and an outer plate 32B attached to the inner plate 32A. The inner plate 32A is provided with a flange portion 70 (corresponding to the peripheral edge portion 35e of the sealing plate 35) projecting outward from the storage chamber 23A of the outflow side tank 23. The flange portion 70 has substantially the same configuration as the sealing plate 35 described in the above-described embodiment.

  An O-ring 34 is disposed between the flange portion 70 and the step portion 23 </ b> B formed on the upper surface of the outflow side tank 23. And the flange part 70 is fixed on the attachment part 23T of the outflow side tank 23 by a pair of clamping division body 80 united with each other.

  Each sandwiched divided body 80 is formed in a U-shaped cross section. The pair of sandwiching divided bodies 80 presses only the peripheral edge 71 of the flange portion 70 by sandwiching the attachment portion 23T and the flange portion 70 disposed on the attachment portion 23T over the entire circumference. The flange portion 70 is brought into close contact with the peripheral surface of the upper insertion port 23 </ b> A <b> 1 by the pressing force of the pair of sandwiching divided bodies 80, and the water-cooled condenser 30 is fixed to the outflow side tank 23. Each sandwiched divided body 80 is fixed to each other by the fitting fixing portions 81 and 82 in a state where the flange portion 70 is fixed to the outflow side tank 23.

  Here, the lower water cooling tank 33 is substantially the same as the first embodiment described above except that the flange portion 70 of the upper water cooling tank 32 is not provided, and thus the description thereof is omitted here.

(Action / Effect)
In the second embodiment described above, a part of the water cooling tank 32 of the water cooling condenser 30 is exposed to the outside of the outflow side tank 23 of the sub radiator 20. Thereby, the volume of the water-cooled condenser 30 in the outflow side tank 23 can be reduced, which contributes to downsizing of the outflow side tank 23.

  In the second embodiment, the flange portion 70 is provided on the inner plate 32A. Thereby, it is not necessary to separately provide the flange portion 70 as a separate member, and the water-cooled capacitor 30 can be reduced in weight and cost.

  Here, in 2nd Embodiment, although the flange part 70 demonstrated as what was provided in the inner side plate 32A, it is not limited to this, The water cooling tube 31 may be integrally formed and the outer side plate 32B and the refrigerant inflow portion 37 may be formed integrally.

[Third Embodiment]
Next, a water-cooled capacitor 30 according to the third embodiment will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same part as the composite heat exchanger 1 which concerns on 1st, 2nd embodiment mentioned above, and a different part is mainly demonstrated.

(Configuration of water-cooled condenser)
First, the configuration of the water-cooled capacitor 30 according to the third embodiment will be described with reference to the drawings. FIG. 14 is a cross-sectional view showing a part of the outflow side tank 23 of the sub-radiator 20 according to the third embodiment.

  In the third embodiment, the water-cooled condenser 30 is connected to the outflow side tank 23 of the sub-radiator 20 without using the cap 36 described in the first embodiment or the pair of sandwiching divided bodies 80 described in the second embodiment. Installed.

  Specifically, as shown in FIG. 14, a locking portion 35 f (blocking portion) is provided on the outer periphery of the sealing plate 35. The locking portion 35f is locked to a locking step portion 23d formed on the peripheral wall of the outflow side tank 23 of the sub-radiator 20, so that only the peripheral portion 35e of the sealing plate 35 is directed toward the outflow side tank 23 side. Pressing. As a result, the water-cooled condenser 30 is attached to the outflow side tank 23 of the sub-radiator 20, and the upper insertion port 23A1 is closed by the sealing plate 35.

(Action / Effect)
In the third embodiment described above, the sealing plate 35 is provided on the outflow side tank 23 of the sub-radiator 20 without using the cap 36 described in the first embodiment or the pair of sandwiching divided bodies 80 described in the second embodiment. This contributes to a reduction in the number of parts.

  Here, although the description has been given on the assumption that the locking portion 35f of the sealing plate 35 is locked to the locking step portion 23d, the present invention is not limited to this, and the outflow side of the sub radiator 20 by the claw portion or the crimping portion. It may be fixed to the tank 23.

[Fourth Embodiment]
Next, a water-cooled capacitor 30 according to the fourth embodiment will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same part as the composite heat exchanger 1 which concerns on the 1st-3rd embodiment mentioned above, and a different part is mainly demonstrated.

(Configuration of water-cooled condenser)
First, the configuration of the water-cooled capacitor 30 according to the fourth embodiment will be described with reference to the drawings. FIG. 15 is a cross-sectional view showing a part of the outflow side tank 23 of the sub-radiator 20 according to the fourth embodiment.

  In the fourth embodiment, the water-cooled condenser 30 is a sub-cooling device similar to the third embodiment, without using the cap 36 described in the first embodiment and the pair of sandwiching divided bodies 80 described in the second embodiment. Attached to the outflow side tank 23 of the radiator 20.

  Specifically, as shown in FIG. 15, a plate fixing portion 23 e (blocking portion) for fixing the O-ring 34 and the sealing plate 35 is provided on the upper side of the outflow side tank 23 of the sub-radiator 20. The plate fixing portion 23e is formed in a U-shaped cross section. The plate fixing portion 23e presses only the peripheral edge portion 35e of the sealing plate 35 toward the outflow side tank 23 side. As a result, the water-cooled condenser 30 is attached to the outflow side tank 23 of the sub-radiator 20, and the upper insertion port 23A1 is closed by the sealing plate 35.

(Action / Effect)
In the fourth embodiment described above, the sealing plate 35 can be mounted on the outflow side tank 23 of the sub-radiator 20 without using the cap 36 or the pair of sandwiched divided bodies 80, as in the third embodiment. Contributes to the reduction of points.

  Here, the plate fixing portion 23e is described as fixing the O-ring 34 and the sealing plate 35. However, the present invention is not limited to this, and the O-ring 34 and the sealing plate 35 are fixed by a claw portion or a caulking portion. Anything is acceptable.

[Other Embodiments]
Although the contents of the present invention have been disclosed through the embodiments of the present invention as described above, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

  For example, the embodiment of the present invention can be modified as follows. Specifically, the sub radiator 20 and the air cooling condenser 40 have been described as being disposed on substantially the same plane along a direction orthogonal to the flow of the cooling air, but the present invention is not limited to this, and is slightly shifted. It may be arranged at a different position.

  Moreover, although the sub radiator 20 was demonstrated as what is arrange | positioned above the air-cooling capacitor | condenser 40, it is not limited to this, The air-cooling capacitor | condenser 40 may be arrange | positioned above the sub-radiator 20. FIG.

  Moreover, although the sub radiator 20 demonstrated as what cools the cooling water for water cooling charge air cooler 3, it is not limited to this, For example, the refrigerant | coolant used for the various electronic devices mounted in the vehicle (For example, the cooling water used for an inverter etc.) may be cooled.

  In addition, the second heat exchanger has been described as being the water-cooled condenser 30, but is not limited thereto, and may be an oil cooler or the like.

  Further, the water-cooled condenser 30 has been described as being housed in the outflow side tank 23 of the sub-radiator 20, but is not limited thereto, and is accommodated in the inflow side tank 22 of the sub-radiator 20. There may be. That is, the water-cooled condenser 30 may exchange heat between the water-cooling cooling water that flows into the inflow side tank 22 of the sub-radiator 20 and the air-conditioning refrigerant.

  Moreover, although the water-cooled condenser 30 was demonstrated as what is inserted from upper side insertion port 23A1 in the outflow side tank 23 of the sub radiator 20, it is not limited to this, For example, the outflow side tank 23 is changed by a design change etc. It may be inserted from below.

  Moreover, although the water cooling tube 31 was demonstrated as what is formed by extrusion molding, it is not limited to this, For example, you may form by methods other than extrusion molding, for example, an inner fin tube, a refrigerant | coolant, etc. It may be a tube having a passage, a tube, or the like.

  Further, the sealing plate 35 has been described as being integrally formed with the refrigerant inflow portion 37 by brazing. However, the present invention is not limited to this, and any of the refrigerant inflow portion 37, the water cooling tube 31, and the water cooling tank 32 is not limited thereto. It may be fixed by brazing. Needless to say, the fixing means may be other than brazing.

  As described above, the present invention may combine a part of the configurations of the first to fourth embodiments, and further includes various embodiments that are not described here. Therefore, the technical scope of the present invention is determined only by the invention specifying matters according to the scope of claims reasonable from the above description.

DESCRIPTION OF SYMBOLS 1 ... Composite type heat exchanger 10 ... Main radiator 20 ... Sub radiator (1st heat exchanger)
23 ... Outflow side tank (first tank)
23A1 ... Upper insertion port 23C ... Guide part 23D ... Fixing part 23T ... Mounting part 23e ... Plate fixing part (blocking part)
30 ... Water-cooled condenser second heat exchanger)
35 ... Sealing plate (sealing part)
35c ... Refrigerant contact part 35e ... Peripheral part 35f ... Locking part (blocking part)
35B ... Bead part 36 ... Cap (blocking part)
37 ... Refrigerant inflow part (one refrigerant inflow / outlet part)
38 ... Refrigerant outflow part (the other refrigerant inflow / outlet part)
40 ... Air-cooled condenser 70 ... Flange part 71 ... Peripheral part 80 ... Nipping division body (blocking part)

Claims (10)

The first tank (23) is inserted into the first tank (23) through the first heat exchanger (20) provided on the side and the insertion port (23A1) formed in the first tank (23). And a second heat exchanger (30) that exchanges heat between the first refrigerant flowing in the first tank (23) and the second refrigerant flowing in the second heat exchanger (30). A heat exchanger (1),
The second heat exchanger (30) includes a sealing part (35, 70) for closing the insertion port (23A1) and a peripheral edge of the sealing part (35, 80) toward the first tank (23). A closing part (36, 80, 23e, 35f) for pressing only the part (35e, 71) is provided,
The sealing portion (35, 70) is brought into close contact with the peripheral surface of the insertion port (23A1) by the pressing force of the closing portion (36, 80, 23e, 35f), and the second heat exchanger (30) is A composite heat exchanger (1), which is fixed to one tank (23). A composite heat exchanger (1) according to claim 1,
The closing part (36) is constituted by a cap (36) that is open on the inner peripheral side and presses only the peripheral part (35e) of the sealing part (35),
A mounting portion (23T) to which the cap (36) is attached is provided around the insertion port (23A1) of the first tank (23),
The mounting portion (23T) includes a guide portion (23C) for guiding the rotation of the cap (36), and a fixing portion (23D) for fixing the cap (36) guided by the guide portion (36C). Is provided,
The cap (36) presses only the peripheral portion (35e) of the sealing portion (35) by rotating the cap (36) to a locking position where the cap (36) is fixed by the fixing portion (23D). Combined heat exchanger (1). A composite heat exchanger (1) according to claim 1,
The blocking part (80) is constituted by a pair of sandwiching divided bodies (80) that are combined with each other,
A mounting portion (23T) to which the cap (36) is attached is provided around the insertion port (23A1) of the first tank (23),
The mounting portion (23T) and the peripheral portion (71) of the sealing portion (70) disposed on the mounting portion (23T) are sandwiched between the pair of sandwiching divided bodies (80A, 80B) over the entire circumference. Thus, the pair of sandwiched divided bodies (80A, 80B) presses only the peripheral edge portion (71) of the sealing portion (70). A composite heat exchanger (1) according to any one of claims 1 to 3,
The composite heat exchanger (1), wherein the sealing part (35, 70) is formed of thin aluminum plate. A composite heat exchanger (1) according to any one of claims 1 to 4,
The second heat exchanger (30) includes a second tube (31), a pair of second tanks (32, 33) provided at both ends of the second tube (31), and each second tank ( 32, 33) and a pair of refrigerant inflow / outflow portions (37, 38) respectively fixed to
The sealing part (35, 70) is fixed to one of the refrigerant inflow / outlet part (37), the second tube (31), or the second tank (32). Heat exchanger (1). A composite heat exchanger (1) according to claim 5,
The composite heat exchanger (1), wherein the sealing part (35) is integrally formed with one of the refrigerant inflow / outflow parts (37) by brazing. A composite heat exchanger (1) according to any one of claims 1 to 6,
The sealing part (35) includes a peripheral part (35e) of the sealing part (35) pressed by the blocking part (36) and an inner peripheral side of the peripheral part (35e) of the sealing part (35). A refrigerant contact part (35c) provided and in contact with the first refrigerant passing through the first tank;
The composite heat exchanger (1), wherein the refrigerant contact part (35c) is formed more firmly than a peripheral edge part (35e) of the sealing part (35). A composite heat exchanger (1) according to claim 7,
The composite heat exchanger (1), wherein the refrigerant contact portion (35c) is provided with a bead portion (35B) protruding outward. A composite heat exchanger (1) according to claim 7,
The composite heat exchanger (1), wherein the refrigerant contact part (35c) is formed to be thicker than a peripheral part (35e) of the sealing part (35). A composite heat exchanger (1) according to any one of claims 1 to 9,
The first heat exchanger (20) is a sub-radiator,
The composite heat exchanger (1), wherein the second heat exchanger (30) is a water-cooled condenser or an oil cooler.

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