JP2020123506A - Heat exchanger - Google Patents

Abstract

To provide a heat exchanger capable of preventing deformation of an outer package bag.SOLUTION: The present invention relates to a heat exchanger comprising an outer package bag 5 configured by bag-shaping a wall material 50 of a laminate material in which a resin coating layer 52 is provided on at least one side of a metallic heat transfer layer 51. A heat medium is made flow in and flow out of the inside of the outer package bag 5 through an inlet/outlet 55 which is provided in an end of the outer package bag 5. A reinforcing member 1 is accommodated in the end of the outer package bag 5. The reinforcing member 1 includes: a pair of wall material support part 11 bonded to inner surfaces of a pair of opposed wall materials 50 of the outer package bag 5; and a spacer part 12 which is provided between the pair of wall material support parts 11 and keeps an interval between both the wall material support parts 11.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a heat exchanger using a laminate material in which a resinous coating layer is laminated on a metal heat transfer layer as an outer bag and its related technique.

A hybrid vehicle (HEV), an electric vehicle (EV), and the like are equipped with a battery device that supplies electric power for driving an electric motor. As such a battery device, there is generally used a battery device in which a plurality of small single cells made of various secondary batteries such as lithium secondary batteries are connected in series or in parallel. In particular, in recent years, in order to extend the cruising range of an electric vehicle, a plurality of assembled batteries are combined in series or in parallel to further increase the capacity of a battery device.

On the other hand, since the performance and life of a lithium secondary battery, which is often used as a battery device, greatly changes depending on the operating temperature, it is preferable to control the temperature to an appropriate temperature for efficient use over a long period of time. However, when used in the form of a plurality of assembled batteries as described above, since the plurality of assembled batteries are closely arranged, it is impossible to effectively release the heat generated from each assembled battery or each single battery. It is difficult, and the temperature of each battery pack rises, which may reduce the performance and life.

Therefore, a technique has been developed in which a plurality of assembled batteries are cooled by using a thin heat exchanger as shown in Patent Document 1 below. In this heat exchanger, two metal dish-shaped plates are made to face each other to form a heat exchanger (flat tube), and a flat tube is arranged between each of the plurality of battery packs, whereby the battery pack is assembled. The heat generated from each unit cell is discharged to the outside through the refrigerant (cooling water) flowing in the flat tube.

Under such a technical background, a heat exchanger for cooling a plurality of assembled batteries as an automobile battery device, like other automobile parts, is required to be thin, small and lightweight, and low in cost as much as possible. As a part of this, adoption of a heat exchanger using a highly flexible laminate material is being considered.

The heat exchanger using the laminate material is provided with an outer bag in which two laminate materials in which a resin coating layer is laminated on both surfaces of a heat transfer layer made of aluminum foil to an aluminum thin plate are laminated and joined in a bag shape. ing. In such a heat exchanger, the refrigerant introduced from the inlet provided at one end passes through the inside of the outer bag and flows out from the outlet provided at the other end, so that the refrigerant is discharged from the outer bag. It is configured to circulate inside. An outer bag is arranged between each of the plurality of battery packs, and the heat generated from each unit cell of the battery pack is released to the outside through the refrigerant flowing inside the outer bag.

It is conceivable to provide fins inside the heat exchanger using such a laminate material. When the fins are provided inside, not only the cooling performance can be improved, but also because the fins function as spacers between the opposing walls of the outer bag, improvement in rigidity such as pressure resistance can be expected.

JP2012-199149A

However, in the heat exchanger using the conventional laminate material, if fins are provided up to the inlet/outlet portion at the end of the outer packaging bag, the flow of the refrigerant becomes uneven at the inlet/outlet portion due to the influence of the fins, and the cooling performance deteriorates. It is difficult to place fins at the ends because of the risk.

On the other hand, since the laminate material forming the outer bag has lower strength than metal, the outer bag is easily deformed by the pressure of the fluid flowing inside the outer bag or the weight of the battery or the like installed on the outer surface of the outer bag. There is. Therefore, due to this deformation, a large load is applied to the adhesive part of the outer bag at the end of the outer bag with low rigidity, and in some cases the adhesive part peels off, causing problems such as liquid leakage, resulting in reduced product value. There was a problem of coming. Further, due to the deformation of the outer bag, the contact between the outer bag and the battery becomes insufficient, which causes a problem that the heat exchange efficiency decreases.

The present invention has been made in view of the above problems, and in a heat exchanger using a laminate material, it is possible to prevent inadvertent deformation of the outer packaging bag, and to improve product value and heat exchange performance. It is an object of the present invention to provide a heat exchanger and its reinforcing structure.

In order to solve the above problems, the present invention comprises the following means.

[1] A wall material, which is a laminate material in which a resin coating layer is provided on at least one side of a metal heat transfer layer, is provided in an outer bag, and is provided at an end portion of the outer bag. In a heat exchanger configured to allow a heat medium to flow in and out of the outer bag via the inlet and outlet,
A reinforcing member is accommodated at the end of the outer bag,
The reinforcing member is provided between the pair of wall material support portions that are respectively joined to the inner surfaces of the pair of wall materials that face each other of the outer bag and between the pair of wall material support portions, and between both wall material support portions. A heat exchanger having a spacer portion for holding a space.

[2] An inlet/outlet pipe inserted and arranged in the inlet/outlet of the outer bag,
The heat exchanger according to item 1, wherein the inlet/outlet pipe is provided on the pair of wall material support portions.

[3] The heat exchanger according to the above 1 or 2, wherein the reinforcing member is provided at both ends of the outer bag.

[4] The outer bag is provided with a one-side flow path for circulating a heat medium from one end to the other end and a other-side flow path for circulating a heat medium from the other end to one end in parallel.
A U-turn chamber is provided at the other end of the outer bag to allow the heat medium flowing out of the outflow side end of the one side flow path to flow into the inflow side end of the other side flow path.
The heat exchanger according to claim 1, wherein the reinforcing member includes a U-turn side reinforcing member arranged corresponding to the U-turn chamber.

[5] The heat exchanger according to any one of the above items 1 to 4, wherein a flow dividing means for dividing the heat medium is provided between the pair of wall material support portions of the reinforcing member.

[6] The heat exchanger according to any one of the aforementioned Items 1 to 5, wherein the reinforcing member is an integrally molded product.

[7] The coating layer is provided on at least the inner surface side of the heat transfer layer,
The pair of wall material supporting portions of the reinforcing member is made of synthetic resin,
7. The heat exchanger according to any one of items 1 to 6 above, wherein the wall material support portion and the wall material are bonded and integrated by thermocompression bonding or an adhesive.

[8] The coating layer is provided on at least the inner surface side of the heat transfer layer,
The pair of wall material supporting portions of the reinforcing member is made of metal,
7. The heat exchanger according to any one of the above items 1 to 6, wherein the wall material support portion and the wall material are joined and integrated by an adhesive.

[9] The heat exchanger according to any one of items 1 to 8 above, wherein the heat transfer layer in the wall material is made of aluminum.

[10] A cooler used for cooling a vehicle heating element,
A cooler comprising the heat exchanger according to any one of items 1 to 9 above.

[11] A wall material that is a laminate material in which a resin coating layer is provided on at least one surface side of a metal heat transfer layer is provided in an outer bag, and the outer bag is provided at an end portion of the outer bag. A reinforcing structure of a heat exchanger for reinforcing the outer bag of a heat exchanger configured to allow a heat medium to flow in and out of the outer bag through a doorway,
A pair of wall material supporting portions that are respectively joined to the inner surfaces of the pair of wall materials facing each other of the outer packaging bag are provided at the ends of the outer packaging bag, and both wall material supporting portions are provided between the pair of wall material supporting portions. A reinforcing structure for a heat exchanger, characterized in that a spacer portion for holding a space therebetween is provided.

According to the heat exchanger of the invention [1], the pair of wall members facing each other at the end of the outer bag is supported by the pair of wall member supporting portions of the reinforcing member via the spacer member. The rigidity of the bag end can be improved, and the outer bag is inadvertently deformed against the pressure of the heat medium flowing in the outer bag and the pressing force such as gravity of the member contacting the outer surface of the outer bag. Can be prevented. Therefore, it is possible to surely prevent the liquid leakage and the poor contact with the heat treatment member due to the deformation, and it is possible to improve the product value and the heat exchange performance.

According to the heat exchanger of the invention [2], since the inlet/outlet pipe is provided in the reinforcing member, the inlet/outlet pipe can be installed at the same time as the assembling of the reinforcing member, so that the heat exchanger itself can be easily assembled. You can

According to the heat exchanger of the invention [3], it is possible to improve the rigidity of both ends of the outer bag together.

According to the heat exchanger of the invention [4], it is possible to adopt a system of two or more paths in which two or more flow paths are provided.

According to the heat exchanger of the invention [5], the heat diverting means allows the heat medium to be evenly distributed in the inside of the outer bag so as to flow evenly, so that the heat exchange performance can be further improved.

According to the heat exchangers of the inventions [6] to [9], the above effects can be obtained more reliably.

According to the cooler of the invention [10], it is possible to prevent a defect due to the deformation of the outer bag as in the above, and to improve the product value and the cooling performance.

According to the reinforcement structure of the heat exchanger of the invention [11], it is possible to prevent a defect due to the deformation of the outer packaging bag similarly to the above, and provide a heat exchanger having high product value and sufficient heat exchange performance. it can.

1A and 1B are diagrams schematically showing a heat exchanger according to a first embodiment of the present invention, wherein FIG. 1A is a plan view and FIG. 1B is a sectional view taken along line AA of FIG. 1A. is there. FIG. 2 is an enlarged sectional view showing an end portion of the heat exchanger of the first embodiment. FIG. 3 is a perspective view showing a reinforcing member applied to the heat exchanger of the first embodiment. FIG. 4 is a perspective view showing a modified reinforcing member that can be used in the heat exchanger of the first embodiment. 5A and 5B are diagrams schematically showing a heat exchanger according to a second embodiment of the present invention, wherein FIG. 5A is a plan view and FIG. 5B is a sectional view taken along line BB in FIG. is there. FIG. 6 is a perspective view showing a reinforcing member applied to the heat exchanger of the second embodiment. FIG. 7 is a plan view schematically showing a heat exchanger according to the third embodiment of the present invention. FIG. 8: is a perspective view which decomposes|disassembles and shows the outer bag applied to the heat exchanger of 3rd Embodiment. FIG. 9 is a front side perspective view showing a reinforcing member applied to the heat exchanger of the third embodiment. FIG. 10 is a perspective view on the back surface side showing the reinforcing member of the third embodiment. 11A and 11B are views showing a reinforcing member of the third embodiment, where FIG. 11A is a plan view and FIG. 11B is a front view. 12A and 12B are diagrams schematically showing a heat exchanger according to a fourth embodiment of the present invention, wherein FIG. 12A is a plan view and FIG. 12B is a sectional view taken along line CC of FIG. is there.

<First Embodiment>
FIG. 1 is a diagram schematically showing a heat exchanger according to a first embodiment of the present invention, and FIG. 2 is an enlarged sectional view showing an end portion of the heat exchanger according to the first embodiment.

As shown in these drawings, this heat exchanger is used for cooling a battery device that supplies electric power for driving an electric motor such as an electric vehicle, and includes a bag-shaped outer bag 5. In the outer bag 5, two (a pair) of wall materials 50, 50 made of two (a pair) of laminate materials are joined and integrated by thermocompression bonding (thermal fusion) or an adhesive at the outer peripheral edge portion thereof. It is formed by

In addition, in the heat exchanger of the present embodiment, in order to facilitate understanding of the invention, the up-down direction is described as “up-down direction” toward the paper surface of FIG. Needless to say, in the heat exchanger of the present invention, the installation state (direction) in actual use is not limited to the state shown in FIG. 1(b), and it may be arranged in any state (direction). ..

As shown in FIG. 2, the laminate material as the wall material 50 includes a heat transfer layer 51 made of a metal foil to a thin metal plate and a coating layer 52 made of a thermoplastic resin laminated on both surfaces of the heat transfer layer 51. 52 and a three-layer laminate sheet.

In the present embodiment, the metal forming the heat transfer layer 51 is made of aluminum. In the present specification and claims, the term aluminum is used to mean not only pure aluminum but also aluminum alloy.

In the present embodiment, the thickness of the metal foil (aluminum foil) to the metal thin plate (aluminum thin plate) forming the heat transfer layer 51 is preferably set to 8 μm to 500 μm, and more preferably set to 20 μm to 200 μm. Is good.

The resin forming the coating layer 52 is formed of a polyolefin resin film such as polyethylene or polypropylene. In the present embodiment, the coating layer 52 laminated on one surface of the heat transfer layer 51 and the coating layer 52 laminated on the other surface may be made of the same kind of resin or different kinds of resin. You may do it.

At both ends of the outer bag 5, entrances 55, 55 are formed so as to penetrate the lower wall member 50. As will be described later in the present embodiment, a refrigerant as a heat medium flows into the outer bag 1 from one inlet/outlet port 55, the refrigerant flows through the inside of the outer bag 5 and flows out from the other inlet/outlet port 55. Is configured.

In the present embodiment, fins 56 are housed in the refrigerant circulation path (flow path) inside the outer bag 5 in order to improve heat exchange efficiency.

Reinforcing members 1 and 1 are provided at both ends of the outer packaging bag 5 so as to correspond to the entrance/exit 55. The reinforcing member 1 is configured so as to protrude to the lower surface side of the lower wall member 11 and the spacer unit 12 arranged between the pair of upper and lower wall member supporting units 11 and 11. And an inlet/outlet pipe 13 arranged.

In the present embodiment, the reinforcing member 1 is made of a material having higher strength than the laminating material forming the wall material 50, and is made of, for example, an integrally molded product of a hard synthetic resin such as high-density polyethylene or polypropylene. ..

The pair of wall material support portions 11 are each formed in a rectangular plate shape, and are arranged in parallel with each other at intervals in the vertical direction.

The spacer portions 12 are arranged at the four corners between the pair of wall material support portions 11 and 11, and are configured to be able to maintain the distance between the pair of wall material support portions 11 and 11.

The entrance/exit pipe 13 is arranged so as to project downward at a substantially central position of the lower wall member support portion 11. A communication hole 14 is formed at a position corresponding to the inlet/outlet pipe 13 of the lower wall material support portion 11, and the space between the pair of wall material support portions 11 and 11 and the inside of the inlet/outlet pipe 13 are formed through the communication hole 14. And are in communication.

The reinforcing member 1 having this configuration is housed at both ends inside the outer bag 5. That is, the inlet/outlet pipe 13 of the reinforcing member 1 penetrates the inlet/outlet 55 of the lower wall member 50 and projects downward, so that the outer surface sides of the pair of wall member support portions 11 and 11 face each other. The inner surfaces of 50 and 50 are joined and integrated via an adhesive. In this way, the reinforcing member 1 is attached to the outer packaging bag 5, and at the same time, the peripheral portion of the inlet/outlet pipe 13 on the lower surface side of the lower wall material support portion 11 and the wall material 50 are sealed in a watertight state.

In the present embodiment, a heat-sealing heat-sealing layer is laminated on the inner surface of the laminate material as the wall material 50, or the inner coating layer 52 is made of a heat-sealing resin. Alternatively, the inner surface of the wall material 50 and the outer surface of the wall material supporting portion 11 of the reinforcing member 1 may be joined and integrated by thermocompression bonding (thermal fusion).

However, as will be described later, when the reinforcing member 1, particularly the wall material supporting member 11 is made of metal, an adhesive is used to connect the inner surface of the wall material 50 and the wall material supporting portion 11 of the reinforcing member 1. It is preferable that they are joined and integrated.

In the heat exchanger of the present embodiment configured as described above, since the inlet/outlet pipes 13, 13 are arranged in a state of protruding downward, the inlet/outlet pipes 13, 13 are used as pipe joints for the outside of a refrigerant pipe or the like. It connects the pipes.

Then, the refrigerant flows from the one inlet/outlet pipe 13 into the heat exchanger (outer bag 5) through the refrigerant pipe, and the refrigerant flows through the inside of the outer bag 5 along the fins 56, and the other inlet/outlet pipe Flowed out via 13. In this way, the heat circulated between the refrigerant circulated inside the outer bag 5 and the heating element such as the assembled battery of the vehicle battery device arranged in contact with the surface of the outer bag 5 and the heat generated from the heating element is exchanged. It is released via the refrigerant. As a result, the vehicle battery device is cooled.

According to the heat exchanger of the present embodiment having the above configuration, the reinforcing member 1 is housed in both ends of the outer bag 5, and the pair of wall material supporting portions 11, 11 of the reinforcing member 1 interpose the spacer portion 12 therebetween. Since the space between the upper and lower wall members 50, 50 is maintained, the rigidity (strength, etc.) of the outer bag 5 constituted by the wall member 50 can be improved and sufficient pressure resistance can be secured. .. Therefore, the outer bag 5 can be prevented from being inadvertently deformed against the pressure of the refrigerant flowing in the outer bag 5 and the pressing force such as gravity of a member such as a battery contacting the outer surface of the outer bag 5. It is possible to prevent the occurrence of defects such as liquid leakage due to partial peeling of the outer bag 5 due to the deformation, and it is possible to improve the product value. Further, it is possible to prevent contact failure between the outer bag 5 and the battery, and maintain high heat exchange efficiency and heat exchange performance.

Further, since the fins 56 are arranged in the intermediate portion of the outer bag 5 except for both ends thereof, rigidity and pressure resistance can be secured by the fins 56, and harmful deformation can be prevented to prevent liquid leakage and battery. It is possible to reliably prevent contact failure with.

In addition, in the present embodiment, as the reinforcing member 1, the rod-shaped (columnar) spacer portion 12 is described as an example formed between the pair of wall material support portions 11 and 11, but is not limited thereto. In the present invention, the shape of the reinforcing member 1 is not particularly limited. For example, as shown in FIG. 4, a reinforcing member 1 in which a wall-shaped (plate-shaped) spacer portion 12 is formed between both side portions of a pair of wall material support portions 11, 11 may be used. In short, it is provided with a pair of wall material support members 11 and 11 joined to the inner surfaces of the pair of wall materials 50 and 50 of the outer bag 5, and a spacer portion 12 that can maintain the distance between the pair of wall material support members 11. If so, it can be adopted as the reinforcing member of the present invention.

<Second Embodiment>
FIG. 5 is a view schematically showing a heat exchanger according to a second embodiment of the present invention, and FIG. 6 is a perspective view showing a reinforcing member applied to the heat exchanger.

As shown in both figures, the heat exchanger of the second embodiment is greatly different from the heat exchanger of the first embodiment in that the reinforcing member 1 is formed separately from the inlet/outlet pipe 13. There is.

That is, in the heat exchanger of the second embodiment, the inlet/outlet pipes 13, 13 made of hard synthetic resin are arranged between both ends of the pair of wall members 50, 50 made of a pair of laminate materials. The contact portion between the outer peripheral edge portions of the pair of wall members 50, 50 and the outer peripheral surfaces of the inlet/outlet pipes 13, 13 and the contact portion between the outer peripheral edge portions of the pair of wall members 50, 50 are thermocompression bonded. The outer bag 5 with the inlet/outlet pipe 13 is configured by being joined and integrated by (heat fusion) or an adhesive.

Further, inside the outer bag 5, the reinforcing members 1 and 1 are housed at both ends, and the fins 56 are housed at an intermediate part.

As shown in FIG. 6, the reinforcing member 1 includes a pair of upper and lower rectangular plate-shaped wall material supporting portions 11, 11 and a columnar spacer portion 12 arranged in the center between the pair of wall material supporting portions 11, 11. Equipped with. The outer surfaces of the pair of wall material supporting portions 11, 11 of the reinforcing members 1, 1 are joined to the inner surfaces of the upper and lower wall materials 50, 50 of the outer bag 5 by an adhesive or thermocompression bonding (thermal fusion). Be integrated.

Since the other configurations of the heat exchanger of the second embodiment are substantially the same as those of the heat exchanger of the first embodiment, the same or corresponding parts will be denoted by the same reference symbols and redundant description will be omitted.

In the heat exchanger of the second embodiment, the refrigerant introduced from the one inlet/outlet pipe 13 passes through the inside of the outer envelope bag 5 and flows out from the other inlet/outlet pipe 13, so that the refrigerant flows into the outer envelope bag 5. Circulate inside. Then, heat is exchanged between the circulating refrigerant and a heating element such as an automobile battery arranged in contact with the surface of the outer bag 5 to cool the heating element.

In the heat exchanger of the second embodiment as well, similarly to the above, the reinforcing member 1 can improve rigidity and pressure resistance at both ends of the outer bag 5. Therefore, it is possible to prevent careless deformation of the outer packaging bag 5 that causes liquid leakage and poor contact with the heating element, thereby improving the product value and heat exchange performance.

<Third Embodiment>
FIG. 7 is a plan view schematically showing a heat exchanger according to a third embodiment of the present invention, FIG. 8 is an exploded perspective view showing an outer bag of the heat exchanger, and FIGS. It is a figure for demonstrating the reinforcement member of a container.

As shown in these figures, in the heat exchanger according to the third embodiment, the outer bag 5 includes an upper wall member 50a made of the same laminate material as the above embodiment and a lower wall member made of the same laminate material. It is provided with a wall material 50b. In this embodiment, the upper wall member 50a and the lower wall member 50b form a pair of wall members.

The lower wall member 50b is formed with a recessed intermediate region, is continuous in the lengthwise direction, and has a recess 57 with both end edges formed in an arc shape in plan view, and a flange portion outside the recess 57. 58 is formed. Further, inlets and outlets 55, 55 are formed on the bottom walls of both ends of the recess 57.

As will be described later, the reinforcing members 2 and 2 are housed at both ends of the recess 57 of the lower wall member 50b in the lengthwise direction, and the fins 56 are housed between the reinforcing members 2 and 2 at the intermediate portion. It is a thing.

The reinforcing member 2 has a substrate 21b having a substantially semi-circular shape in a plan view, a peripheral wall-shaped spacer portion 22 integrally formed along an arcuate peripheral edge of the substrate 21b, and protrudes downward to the lower surface of the substrate 21b. Of the inlet/outlet pipe 23 formed integrally with the substrate 21b, a communication hole 24 provided in the substrate 21b and communicating with the inside of the inlet/outlet pipe 23, and 3 as a flow dividing means integrally formed on the upper surface of the substrate 21b so as to project upward. It is provided with the individual flow-splitting protrusions 25.

Further, positioning protrusions 26 are integrally formed on both end portions of the end surface (fin facing surface) of the reinforcing member 2 that faces the fins 56.

Here, in the present embodiment, the substrate 21b and the upper end surface 21a of the spacer portion 22 respectively constitute wall material supporting portions, and these members 21a and 21b constitute a pair of wall material supporting portions. ..

In the present embodiment, the reinforcing member 2 is made of, for example, an integrally molded product of hard synthetic resin such as high-density polyethylene or polypropylene.

The reinforcing member 2 having this configuration is housed in both ends of the recess 57 of the lower wall member 50b of the outer bag 5. At this time, the inlet/outlet pipe 23 of the reinforcing member 2 is disposed so as to be inserted into the inlet/outlet 55 of the lower wall member 50b and project downward. Further, the fin 56 is housed in the middle portion of the recess 57 of the lower wall member 50b. At this time, the positioning protrusions 26 of the reinforcing member 2 are arranged so as to correspond to the end faces of the fins 56, and the end faces of the fins 56 come into contact with the positioning protrusions 26 so that the displacement of the fins 56 is prevented. Is configured.

In this state, the upper wall member 50a is arranged so as to close the upper surface side of the recess 57 of the lower wall member 50b, and the outer peripheral edge portion of the upper wall member 50a and the flange portion 58 of the lower wall member 50b are heat-sealed. Alternatively, they are joined and integrated by an adhesive. Further, the substrate 21b which is one (lower side) wall material supporting portion of the reinforcing member 2 and the bottom surface of the recess 57 of the lower wall material 50b are joined and integrated by heat fusion or an adhesive, and the other (upper side) The spacer portion upper surface 21a, which is a wall material supporting portion, and the upper wall material 50a are joined and integrated by heat fusion or an adhesive. Further, if necessary, the upper end surface of the flow dividing projection 26 of the reinforcing member 2 and the upper wall member 50a are joined and integrated by heat fusion or an adhesive.

When the upper end surface of the diversion projection 26 is joined to the upper wall member 50a in this manner, the diversion projection 26 can be regarded as a part of the spacer portion, and the upper end surface of the diversion projection 26 is located on the upper side. It can be regarded as a part of the wall material support portion.

In the heat exchanger of the third embodiment assembled in this way, the refrigerant introduced from the one inlet/outlet pipe 23 into the outer bag 5 is appropriately divided by the diverting projections 26 in the one reinforcing member 2 to be finned. The refrigerant flows into the inside of the outer packaging bag 5, passes through the fins 56, passes through the inlet/outlet pipe 23 of the other reinforcing member 2, and flows out of the outer bag 5. In this way, heat is exchanged between the refrigerant circulating in the outer bag 5 and the heating element arranged in contact with the outer bag 5, and the heating element is cooled.

Also in the heat exchanger of the third embodiment, the rigidity and pressure resistance at both ends of the outer bag 5 can be improved by the reinforcing member 2 in the same manner as described above, so that the outer bag causes liquid leakage and poor contact with the heating element. The bag 5 can be surely prevented from being deformed accidentally, and the product value and the heat exchange performance can be improved.

Further, in the heat exchange of the third embodiment, since the flow dividing projections 26 for dividing the refrigerant are provided on the reinforcing member 2, the refrigerant circulates evenly and evenly in the outer bag 5 without uneven distribution. .. Therefore, the heat exchange efficiency can be further improved.

<Fourth Embodiment>
FIG. 12 is a diagram showing a heat exchanger according to a fourth embodiment of the present invention. As shown in the figure, in the heat exchanger of the fourth embodiment, one side flow passage 61a and the other side flow passage 61b through which the refrigerant flows are provided in parallel inside the outer bag 5.

That is, the outer bag 5 is formed by joining the two wall members 50, 50, which are laminated materials, to each other at their outer peripheral edge portions by heat fusion or by an adhesive agent as in the first and second embodiments. Has been done.

The lower wall member 50 at one end of the outer bag 5 is formed with two entrances 55a and 55b arranged side by side in the width direction (vertical direction in FIG. 12A). Further, except for the other end of the outer bag 5, a partition wall 6 is continuously formed in the widthwise middle portion from one end to the middle portion so as to extend continuously in the length direction (left and right direction in FIG. 12A). The outer bag 5 is provided with entrance/exit chambers 65a and 65b at one end thereof with the partition wall 6 interposed therebetween. The entrance/exit chambers 65a and 65b are independent of each other, and the entrance/exit 55a on one side is arranged in the entrance/exit chamber 65a on one side, and the entrance/exit 55b on the other side is arranged in the entrance/exit chamber 65b on the other side. ing.

Further, in the middle part of the outer bag 5, two flow paths 61a and 61b, which are independent from each other, are formed in parallel on both sides of the partition wall 6 with the partition wall 6 interposed therebetween. The flow passage 61a on one side communicates with the inlet/outlet chamber 65a on one side, and the flow passage 61b on the other side communicates with the inlet/outlet chamber 65b on the other side.

The entrance/exit reinforcement members 1 and 1 are housed in the entrance/exit chambers 65a and 65b, respectively. The inlet/outlet side reinforcing members 1 and 1 have substantially the same configuration as the reinforcing member 1 applied to the first embodiment shown in FIG. 3, and have a pair of upper and lower wall material supporting portions 11 and 11 and a wall material supporting portion. It is provided with a spacer portion 12 provided between 11, 11, an inlet/outlet pipe 13 provided on the lower side wall material supporting portion 11 so as to project downward, and a communication hole 14 provided in the lower side wall material supporting portion 11.

The entrance/exit reinforcement members 1 and 1 are housed in both entrance/exit chambers 65a and 65b at one end of the outer bag 5, respectively. At this time, the respective inlet/outlet pipes 13, 13 of the respective reinforcing members 1, 1 are arranged such that they are inserted into the corresponding inlet/outlet ports 55a, 55b of the respective inlet/outlet chambers 65a, 65b and project downward. The upper and lower wall material support portions 11 and 11 of 1, 1 are joined and integrated with the upper and lower wall materials 50 and 50 by heat fusion or an adhesive.

In the present embodiment, the two entrance/exit reinforcement members 1 and 1 and the partition wall 6 are integrally formed, and the entrance/exit reinforcement members 1 and 1 and the partition wall 6 are simply formed by assembling the integrally molded product. The plurality of parts can be assembled at once, and the assembly work can be easily performed. However, in the present invention, the entrance/exit reinforcement members 1 and 1 and the partition wall 6 may be formed separately.

Fins 56, 56 are housed in the two flow paths 61a, 61b in the middle portion of the outer bag 5, respectively.

In addition, a U-turn chamber 66 is formed at the other end of the outer bag 5 to connect the two flow paths 61a and 61b. In the U-turn chamber 66, the U-turn side reinforcing member 3 formed of, for example, an integrally molded product of hard synthetic resin is housed. The U-turn side reinforcing member 3 is provided on the plate-shaped upper side wall material supporting portion 31a arranged along the inner surface of the upper side wall material 50 of the outer bag 5, and on the lower surface side of the upper side wall material supporting portion 31a. A plurality of flow control plates 32 provided from one end of one flow passage 61a to the end of the other flow passage 61b, and a strip-shaped lower wall material provided along the lower ends of the flow control plates 32 And a support portion 31b. The flow control plate 32 allows the refrigerant that has flowed out from the end portion (outflow side end portion) of the flow passage 61a on one side to be guided to the end portion (inflow side end portion) of the other flow passage 61b. And a function as a spacer portion for maintaining a space between the upper and lower wall material support portions 31a and 31b.

In the U-turn side reinforcing member 3, the upper side wall material supporting portion 31a is joined and integrated with the upper side wall material 50 of the outer bag 5 by heat fusion or an adhesive, and the lower side wall material supporting portion 31b is lower side. Is integrally bonded to the wall member 50 by heat fusion or an adhesive.

In the heat exchanger of the fourth embodiment, the refrigerant is introduced from the one inlet/outlet port 55a into the one inlet/outlet chamber 65a via the inlet/outlet pipe 13, and the refrigerant passes through the fins 56 of the one flow passage 61a to U. It is introduced into the turn chamber 66. The refrigerant introduced into the U-turn chamber 66 makes a U-turn and is introduced into the other flow passage 61b, and the refrigerant is introduced into the other inlet/outlet chamber 65b through the fins 56 of the other flow passage 61b. Further, the refrigerant introduced into the other inlet/outlet chamber 65b flows out from the other inlet/outlet 55b to the outside via the inlet/outlet pipe 13. In this way, heat is exchanged between the refrigerant circulating in the outer bag 5 and the heating element arranged in contact with the outer bag 5, and the heating element is cooled.

In the heat exchanger of the fourth embodiment as well, the rigidity and pressure resistance at both ends of the outer packaging bag 5 can be improved by the reinforcing members 1 and 3 in the same manner as described above, which may cause liquid leakage and poor contact with the heating element. The outer bag 5 can be prevented from being inadvertently deformed, and the product value and heat exchange performance can be improved.

Further, in the heat exchanger of the present embodiment, since the flow control plate 32 is formed on the U-turn side reinforcing member 3, it is possible to smoothly flow the refrigerant from the flow passage 61a on one side to the flow passage 61b on the other side. Therefore, the heat exchange performance can be further improved.

Needless to say, in the heat exchanger of this embodiment, the refrigerant may be circulated from the other flow passage 61b to the one flow passage 61a.

Further, in the heat exchanger of the fourth embodiment, a case of forming a two-pass type heat exchanger in which two independent flow paths 61a and 61b are formed has been described as an example, but the present invention is not limited thereto. The present invention can also be applied to a heat exchanger of a three-pass or more type in which three or more independent flow paths are formed in parallel.

Further, in the above-described embodiment, the case where the reinforcing members 1 to 3 are configured by integrally molded products of hard synthetic resin has been described as an example, but the present invention is not limited thereto, and in the present invention, the material of the reinforcing member is limited. Not something. For example, in the present invention, the reinforcing member may be made of metal or a composite of metal and resin. Further, the reinforcing member does not necessarily have to be formed by an integrally molded product, but may be formed by an assembly member that is a combination of a plurality of members.

Further, in the above embodiment, a laminate having a three-layer structure is adopted, but the present invention is not limited thereto. In the present invention, a laminate having a two-layer structure in which a resin layer is laminated on one side of a metal layer. Alternatively, a laminate material having a structure of four layers or more may be used.

Further, in the above embodiment, the case where the heat exchanger of the present invention is used as a cooling device (cooler) has been described as an example, but the present invention is not limited thereto, and the heat exchanger of the present invention is used as a heater. You can also

INDUSTRIAL APPLICABILITY The heat exchanger of the present invention can be suitably used as a cooling device for cooling a heating element such as a battery device for driving an electric motor used in, for example, hybrid vehicles, electric vehicles and the like.

1: Reinforcement member 11: Wall material support portion 12: Spacer portion 13: Entrance/exit pipe 2: Reinforcement member 21a: Spacer portion upper surface (wall material support portion)
21b: substrate (wall material support portion)
22: Spacer part 23: Inlet/outlet pipe 25: Dividing part (dividing means)
3: U-turn side reinforcing member 31a: upper side wall material supporting portion 31b: lower side wall material supporting portion 5: outer bag 50: wall material 50a: upper wall material 50b: lower wall material 51: heat transfer layer 52: coating layer 55: Door 55a: Door 55b: Door 56: Fin 6: Partition wall 61a: Flow path 61b: Flow path 66: U-turn chamber

Claims (11)

At least one surface of the metal heat transfer layer is provided with an outer packaging bag in which a wall material, which is a laminate material provided with a resin coating layer, is formed into a bag shape, and an inlet/outlet provided at an end of the outer packaging bag is provided. Through, in a heat exchanger configured to allow a heat medium to flow in and out of the outer bag,
A reinforcing member is accommodated at the end of the outer bag,
The reinforcing member is provided between the pair of wall material support portions that are respectively joined to the inner surfaces of the pair of wall materials that face each other of the outer bag and between the pair of wall material support portions, and between both wall material support portions. A heat exchanger having a spacer portion for holding a space. An entrance/exit pipe arranged to be inserted into the entrance/exit of the outer bag,
The heat exchanger according to claim 1, wherein the inlet/outlet pipe is provided in the pair of wall material support portions. The heat exchanger according to claim 1, wherein the reinforcing members are provided at both ends of the outer bag. The outer bag is provided with one side flow path for circulating the heat medium from one end to the other end, and the other end side channel for circulating the heat medium from the other end to the one end in parallel.
A U-turn chamber is provided at the other end of the outer bag to allow the heat medium flowing out of the outflow side end of the one side flow path to flow into the inflow side end of the other side flow path.
The heat exchanger according to claim 1, wherein the reinforcing member includes a U-turn side reinforcing member arranged corresponding to the U-turn chamber. The heat exchanger according to any one of claims 1 to 4, wherein a flow dividing unit for dividing the heat medium is provided between the pair of wall member support portions of the reinforcing member. The heat exchanger according to claim 1, wherein the reinforcing member is an integrally molded product. The coating layer is provided on at least the inner surface side of the heat transfer layer,
The pair of wall material supporting portions of the reinforcing member is made of synthetic resin,
The heat exchanger according to any one of claims 1 to 6, wherein the wall material support portion and the wall material are bonded and integrated by thermocompression bonding or an adhesive. The coating layer is provided on at least the inner surface side of the heat transfer layer,
The pair of wall material supporting portions of the reinforcing member is made of metal,
The heat exchanger according to any one of claims 1 to 6, wherein the wall material support portion and the wall material are joined and integrated by an adhesive agent. The heat exchanger according to claim 1, wherein the heat transfer layer in the wall material is made of aluminum. A cooler used for cooling a vehicle heating element,
A cooler comprising the heat exchanger according to any one of claims 1 to 9. At least one surface of the metal heat transfer layer is provided with an outer packaging bag in which a wall material, which is a laminate material provided with a resin coating layer, is formed into a bag shape, and an inlet/outlet provided at an end of the outer packaging bag is provided. Through, a reinforcing structure of a heat exchanger for reinforcing the outer bag of the heat exchanger, wherein the heat medium is allowed to flow into and out of the outer bag,
A pair of wall material support portions that are respectively joined to the inner surfaces of the pair of wall materials facing each other of the outer bag are provided at the ends of the outer bag, and both wall material support portions are provided between the pair of wall material support portions. A reinforcing structure for a heat exchanger, characterized in that a spacer portion for holding a space therebetween is provided.

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