Heat exchange piping, heat exchange device and heat exchange system

Abstract

To provide heat exchange piping which has a high degree of shape freedom, and can be easily matched with a complicated shape.SOLUTION: Heat exchange piping 10 includes: a tubular external wrapping material 14 having a flow channel 12 through which a heat medium passes; and an internal core material 16 arranged on the flow channel 12, wherein the external wrapping material 14 has an external wrapping laminate material 18 including a metal heat transfer layer, and a resin heat fusion layer 22 provided on one surface side of the heat transfer layer, the external wrapping laminate materials 18 are overlapped each other or the heat fusion layer 22 and the external wrapping laminate material 18 are overlapped with each other, the heat fusion layers 22 are bonded to each other outside the flow channel 12, and the internal core material 16 has an internal core laminate material 18 including a metal heat transfer layer 30 and a resin heat fusion layer 22 provided on both surface sides of the heat transfer layer 30, has a projection 34 and a recess 36 (uneven part), and has flexibility.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a heat exchange piping, a heat exchange device, and a heat exchange system. [Background technology]

[0002] A resin-fused heat exchanger has been disclosed that includes a bag-shaped outer packaging material through which a heat medium flows after flowing in through a heat medium inlet and out through a heat medium outlet, and an inner core material placed inside the outer packaging material (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-3132 Summary of the Invention [Problem to be solved by the invention]

[0004] In the field of electronic devices such as smartphones and personal computers, and battery modules mounted on electric vehicles, hybrid vehicles, etc., techniques for incorporating water-cooled coolers, heat pipes, etc. are known as heat generation countermeasures. Also, in power semiconductor modules made of silicon carbide, etc., measures using cooling plates, heat sinks, etc. have been proposed as heat generation countermeasures.

[0005] For example, vehicles equipped with motors, such as hybrid vehicles and electric vehicles, are equipped with a drive means for driving the motor. The drive means is composed of a power module having a plurality of power semiconductors such as IGBTs (Insulated Gate Bipolar Transistors), electronic components such as capacitors, and bus bars that electrically connect these electronic components. When driving the motor, a large current may flow through the bus bars that connect the power semiconductors, capacitors, and other electronic components. In this case, the drive means generates heat due to switching loss, resistance loss, and the like, so it is desirable to efficiently cool the drive means. It is also desirable to efficiently cool the heat generated by the battery module installed in the vehicle.

[0006] For this reason, a heat exchange system is used in which a heat medium is circulated between a heat source and a cooler, and the temperature of the heat medium heated by the heat source is lowered by the cooler.

[0007] However, conventionally, the heat medium and the cooler are simply connected by piping, and the heat of the heat medium reaches the cooler without being significantly reduced, making it difficult to improve the cooling efficiency of the cooler.

[0008] It is possible to dissipate heat by contacting a metal pipe or the sheet-like resin-fused heat exchanger described in the above document with equipment located near the piping route, but because of the low degree of freedom in shape, it is difficult to conform to the shape of the equipment if it has a complex shape.

[0009] An object of the present disclosure is to provide a heat exchange piping that has a high degree of freedom in shape and can be easily made to fit complex shapes. [Means for solving the problem]

[0010] The first aspect is a heat exchange piping having a tubular outer packaging material with a flow path through which a heat medium passes, wherein the outer packaging material has an outer packaging laminate material including a metal heat transfer layer and a resin heat-sealing layer provided on one side of the heat transfer layer, and the outer packaging laminate material is overlapped, or the heat-sealing layer and the outer packaging laminate material are overlapped, and the heat-sealing layers are joined to each other outside the flow path, and the outer packaging material is flexible.

[0011] In this heat exchange piping, a tubular outer packaging material having a flow path through which a heat medium passes has an outer packaging laminate material including a metal heat transfer layer and a resin heat-sealing layer provided on one side of the heat transfer layer, and heat exchange can be performed between the heat medium and the area in contact with the outer packaging material. In addition, because this heat exchange piping is flexible, it has a higher degree of freedom in shape compared to metal pipes or sheet-like resin-sealed heat exchangers, and can be easily made to conform to complex shapes.

[0012] The second aspect is a heat exchange piping according to the first aspect, which is provided with an inner core material placed in the flow path, and the inner core material has an inner core laminate material including a metal heat transfer layer and a resin heat-sealing layer provided on both sides of the heat transfer layer, and has an uneven portion, and the heat-sealing layer on the bottom surface of the concave portion and the top surface of the convex portion of the inner core material is joined to the heat-sealing layer of the outer packaging material.

[0013] In this heat exchange piping, the strength can be increased by the inner core material.

[0014] In a third aspect, in the heat exchange piping according to the first aspect, an inlet and an outlet for the heat medium are provided at both ends in the length direction of the outer packaging material.

[0015] This heat exchange piping has an inlet and outlet for the heat medium at both ends of the outer packaging material in the longitudinal direction, so that the heat exchange piping can be easily incorporated into the path of the piping through which the heat medium passes.

[0016] A heat exchange device according to a fourth aspect includes a heat exchange piping according to any one of the first to third aspects, and a device to which the heat exchange piping is attached and which exchanges heat with the heat exchange piping.

[0017] This heat exchange device has a heat exchange pipe and a device that exchanges heat between the heat exchange pipe and the device. By incorporating the device in the middle of the pipe path through which the heat medium passes, part of the heat from the heat medium can be released to the device.

[0018] A heat exchange device according to a fifth aspect includes the heat exchange piping according to any one of the first to third aspects, and a piping connected to the heat exchange piping and through which a heat medium flows.

[0019] In this heat exchange device, a heat medium can flow through the heat exchange pipes and pipes.

[0020] A heat exchange system according to a sixth aspect includes a heat source to be cooled, a cooler, piping for circulating a heat medium between the heat source and the cooler, and a heat exchange device according to the fourth aspect in which the heat exchange piping is incorporated into the piping downstream of the heat source and upstream of the cooler.

[0021] In this heat exchange system, a portion of the heat transferred from the heat source to the heat medium is dissipated into the equipment, causing the temperature of the heat medium to drop as it travels from the heat source to the cooler. In this way, by lowering the temperature of the heat medium in advance, it is possible to increase the cooling efficiency of the cooler. [Effects of the Invention]

[0022] According to the present disclosure, it is possible to provide a heat exchange piping that has a high degree of freedom in shape and can be easily made to fit complex shapes. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 2 is a partially cutaway perspective view showing a state in which the heat exchange piping is attached to the equipment. [Figure 2] FIG. 2 is a cross-sectional view showing a heat exchange pipe. [Figure 3] FIG. 3 is an enlarged cross-sectional view showing part A in FIG. 2. [Figure 4] FIG. 3 is an enlarged cross-sectional view showing part B in FIG. 2. [Figure 5] FIG. 1 is a schematic diagram showing a heat exchange system. [Figure 6] FIG. 10 is a schematic diagram showing another example of a heat exchange system. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, embodiments for carrying out the present disclosure will be described with reference to the drawings. Components indicated by the same reference numerals in each drawing are the same or similar components. Note that duplicated explanations and reference numerals may be omitted in the embodiments described below. Furthermore, all drawings used in the following description are schematic, and the dimensional relationships, ratios, etc. of the elements shown in the drawings do not necessarily match those in reality. Furthermore, the dimensional relationships, ratios, etc. of the elements between multiple drawings do not necessarily match.

[0025] In the drawings, the direction of arrow U is the upper side, the direction of arrow D is the lower side, the direction of arrow L is the longitudinal direction, and the direction of arrow W is the width direction.

[0026] (heat exchange piping) 1 to 4, the heat exchange piping 10 of this embodiment comprises a tubular outer covering material 14 having a flow path 12 through which a heat medium passes, and an inner core material 16 arranged in the flow path 12, and is flexible.

[0027] The outer packaging material 14 is constructed using an outer packaging laminate material 18. The outer packaging laminate material 18 includes, for example, a metal heat-transfer layer 20, and a resin coating layer 21 and a heat-sealing layer 22 provided on one side and the other side of the heat-transfer layer 20, respectively. Two outer packaging laminate materials 18 are stacked on top of each other, and the heat-sealing layers of each are bonded together by heat fusion outside the flow path 12 (for example, at both widthwise edges and longitudinal ends), for example, the heat-sealing layer 22 of the upper outer packaging laminate material 18 and the heat-sealing layer 22 of the lower outer packaging laminate material 18. This forms the flow path 12. For example, both longitudinal ends of the flow path 12 are closed by fusion of the upper outer packaging laminate material 18 and the lower outer packaging laminate material 18.

[0028] As shown in FIG. 1, an inlet / outlet 24 for the heat transfer medium may be provided at one end of the outer packaging material 14 in the longitudinal direction. The inlet / outlet 24 may be provided at both ends of the outer packaging material 14 (see FIG. 5). The inlet / outlet 24 is formed, for example, from an integrally molded synthetic resin part, and its interior communicates with the flow path 12. The inlet / outlet 24 is formed, for example, in a cylindrical shape protruding upward from the outer packaging material 14. A heat transfer medium pipe 26 (see FIG. 5) can be connected to the inlet / outlet 24. The position and protruding direction of the inlet / outlet 24 may be in a direction other than upward, for example, the longitudinal direction or the width direction. The inlet / outlet 24 may also be, for example, L-shaped, protruding upward and then bending in the longitudinal direction.

[0029] 1 to 4, the inner core 16 has an inner core laminate material 28 including a metal heat transfer layer 30 and resin heat-sealing layers 31 and 32 provided on both sides of the heat transfer layer 30, and has uneven portions (e.g., rectangular protrusions 34 and recesses 36). The height of the inner core 16 is equal to the height of the flow path 12. The inner core 16 is formed by shaping the inner core laminate material 28 into a corrugated shape by, for example, corrugating, embossing, pleating, etc. The protrusions 34 and recesses 36 are alternately formed in the width direction and extend in the direction of the flow path 12. In the corrugated inner core 16, the portions that protrude upward constitute the protrusions 34, and the portions that protrude (depress) downward constitute the recesses 36.

[0030] As shown in Figure 3, the heat-sealing layer 31 on the top surface of the convex portion 34 of the inner core material 16 is bonded and integrated with the heat-sealing layer 22 of the upper outer laminate material 18. Also, as shown in Figure 4, the heat-sealing layer 32 on the bottom surface of the concave portion 36 of the inner core material 16 is bonded and integrated with the heat-sealing layer 22 of the lower outer laminate material 18. The two-dot chain lines in Figures 3 and 4 virtually represent the interface between the two heat-sealing layers that have been fused and integrated before fusion.

[0031] The convex portions 34 and concave portions 36 are not particularly limited, and may be formed in a circular, elliptical, or oval shape, or in a polygonal shape such as a triangle, a square, or a pentagon, or in other irregular shapes, or may be formed in a combination of these shapes, such as a diamond pattern, silk texture, cloth texture, matte finish, polka dots, blinds, or striped pattern.

[0032] Furthermore, the arrangement pattern of the concave and convex portions is not particularly limited, and they may be arranged in any manner. They do not necessarily have to be arranged with regularity, and a plurality of concave and convex portions may be arranged randomly.

[0033] In the outer laminate 18 and the inner laminate 28, the heat transfer layers 20, 30 are, for example, aluminum foil having a thickness of 100 μm. The heat sealing layers 22, 31, 32 are, for example, a resin film made of CCP (non-oriented polypropylene). The covering layer 21 is, for example, a resin film made of PET (polyethylene terephthalate). The covering layer 21 and the heat sealing layers 22, 31, 32 have a thickness of, for example, 40 μm. The aluminum foil and the resin film are bonded together by, for example, an adhesive.

[0034] In this heat exchange piping 10, a tubular outer packaging material 14 having a flow path 12 through which a heat transfer medium passes has an outer packaging laminate material 18 including a metal heat transfer layer and a resin heat-sealed layer 22 provided on one side of the heat transfer layer, allowing heat exchange between the heat transfer medium and the area in contact with the outer packaging material 14. Furthermore, because this heat exchange piping 10 is flexible, it has a higher degree of freedom in shape compared to metal pipes or sheet-like resin-sealed heat exchangers, and can be easily conformed to complex shapes. In other words, this embodiment provides a heat exchange piping 10 that can be easily conformed to complex shapes.

[0035] Furthermore, if a heat transfer medium inlet / outlet 24 is provided at each of the longitudinal ends of the outer packaging material 14, the heat exchange piping 10 can be easily incorporated into the path of the piping 26 (Figure 5) through which the heat transfer medium passes.

[0036] (Heat exchange device) 1, 5, and 6, the heat exchange device 40 includes a heat exchange pipe 10 and a device 42 to which the heat exchange pipe 10 is attached and which exchanges heat with the heat exchange pipe 10. Specifically, the lower surface of the heat exchange pipe 10 is bonded to a portion of the device 42 that has high thermal conductivity, such as a surface of a metal part.

[0037] This heat exchange device 40 has a heat exchange pipe 10 and a device 42 that exchanges heat between the heat exchange pipe 10. By incorporating the device in the middle of the path of the pipe 26 through which the heat medium passes, part of the heat of the heat medium can be released to the device 42.

[0038] (heat exchange system) 5, a heat exchange system 50 includes a heat source 44 to be cooled, a cooler 46, piping 26 for circulating a heat medium between the heat source 44 and the cooler 46, and a heat exchange device 40 in which a heat exchange piping 10 is incorporated into the piping 26 downstream of the heat source 44 and upstream of the cooler 46. The heat source 44 is, for example, a part such as an engine, motor, or battery mounted on a vehicle that generates heat during use and requires cooling. The cooler 46 is, for example, a radiator. The piping 26 is, for example, a rubber hose or a metal pipe.

[0039] As described above, the heat exchange device 40 has the heat exchange piping 10 attached to the equipment 42. The equipment 42 may be any device that can release heat from the heat medium, such as an auxiliary device or a vehicle body located near the piping 26. While Fig. 5 shows a configuration in which heat is released to two devices 42, the number of devices 42 may be one, or three or more.

[0040] The heat exchange pipes 10 may be arranged in series or in parallel in the middle of the pipe 26. The pipe 26 is connected to the inlet / outlet 24 of the heat exchange pipe 10.

[0041] The heat medium is pressurized by a pump or the like (not shown) and circulates through the pipe 26 in the direction of arrow C through the heat source 44, the two heat exchangers 40, and the cooler 46.

[0042] The heat exchange device 40 may be configured as a piping system having the heat exchange piping 10 and a piping 26 connected to the heat exchange piping 10 and through which a heat medium flows. By attaching the heat exchange piping 10 to the device 42, the heat medium can flow through the heat exchange piping 10 and the piping 26 while dissipating heat to the device 42.

[0043] A heat exchange system 50 can also be configured as shown in the example in FIG. 6. In this example, a cooler 46 is provided inside the housing of a device 42 such as an inverter, and a heat medium is circulated by heat exchange piping 10 attached to the inner surface of the housing. Because the heat exchange piping 10 is flexible, it can be attached to fit the shape of each part of the housing. By arranging the heat exchange piping 10 long, a large amount of heat can be released into the housing. In this example, one cooling system is completed inside one device 42, and heat generated by the device 42 can be released into the housing and further cooled by the cooler 46. Note that in FIG. 6, other piping may be combined with the heat exchange piping 10.

[0044] In these heat exchange systems 50, a portion of the heat transferred from the heat source 44 to the heat medium is dissipated to the equipment 42, causing the temperature of the heat medium to drop as it travels from the heat source 44 to the cooler 46. By lowering the temperature of the heat medium in advance in this way, it is possible to increase the cooling efficiency of the heat medium by the cooler 46. This allows the cooler 46 to be made smaller, thereby saving space and reducing costs.

[0045] [Other embodiments] The above describes one example of an embodiment of the present disclosure, but the embodiment of the present disclosure is not limited to the above, and it goes without saying that various modifications can be made without departing from the spirit of the present disclosure.

[0046] Although the outer envelope laminate material 18 is provided with a resin heat-sealing layer 22 on each of one side and the other side of the heat-transfer layer 20, the upper outer envelope laminate material 18 may be formed of a heat-sealing layer 22 alone, or may be provided with a heat-sealing layer 22 on the underside of the heat-transfer layer 20. The upper heat-sealing layer 22 alone or the heat-sealing layer 22 of the upper outer envelope laminate material 18 constituting the outer envelope material 14 may be superimposed on the lower outer envelope laminate material 18, and the heat-sealing layers 22 of each may be joined together outside the flow path 12.

[0047] Although the heat exchange pipe 10 has the inner core 16, it may be configured without the inner core 16 depending on the required level of strength and heat dissipation. [Explanation of symbols]

[0048] 10 Heat exchange piping 12 Flow path 14 Outer packaging material 16 Inner core material 18 Outer packaging laminate material 20 Heat Transfer Layer 22 Heat-sealing layer 24 Entrance / exit 26 Piping 30 Heat Transfer Layer 31 Heat-sealing layer 32 Heat-sealing layer 34 Convex part (concave and concave part) 36 Concave (uneven) part 40 Heat exchange equipment 42 Equipment 44 Heat source 46 Cooler 50 Heat Exchange System

Claims

1. A heat exchange pipe having a tubular outer covering material having a flow path through which a heat medium passes, The outer wrapping material has an outer wrapping laminate material including a metal heat transfer layer and a resin heat-sealing layer provided on one side of the heat transfer layer, and the outer wrapping laminate material is overlapped, or the heat-sealing layer and the outer wrapping laminate material are overlapped, and the heat-sealing layers are joined together outside the flow path, and the heat exchange piping is flexible.

2. an inner core disposed in the flow path; the inner core material has an inner core laminate material including a metal heat transfer layer and a resin heat fusion layer provided on both sides of the heat transfer layer, and has an uneven portion; 2. The heat exchange piping according to claim 1, wherein heat-sealing layers on the bottom surfaces of the recesses and the top surfaces of the protrusions of the inner core material are joined to a heat-sealing layer of the outer cover material.

3. 2. The heat exchange piping according to claim 1, wherein an inlet and an outlet for the heat medium are provided at both ends in the longitudinal direction of the outer packaging material.

4. The heat exchange piping according to any one of claims 1 to 3; a device to which the heat exchange piping is attached and which exchanges heat with the heat exchange piping; A heat exchange device having:

5. The heat exchange piping according to any one of claims 1 to 3; a pipe connected to the heat exchange pipe and through which a heat medium passes; A heat exchange device having:

6. a heat source to be cooled; A cooler; a pipe for circulating a heat medium between the heat source and the cooler; the heat exchange device according to claim 4, wherein the heat exchange piping is incorporated into the piping downstream of the heat source and upstream of the cooler; A heat exchange system having:

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