Heat exchange device and wear

Abstract

To improve heat exchange efficiency of a heat exchange device which can be used for body temperature adjustment.SOLUTION: The heat exchange apparatus 1 includes the liquid circulation passage 60 through which the liquid is circulated, the heat exchange pad 30 which is flexible and in which the flow passage 40 constituting the liquid circulation passage 60 is formed, the heat insulation pad 32 which has heat insulation properties and is disposed on the surface opposite to the heat exchange surface of the heat exchange pad 30, the heat exchange unit 12 which performs heat exchange with the liquid flowing through the liquid circulation passage 60, and the pump 72 disposed in the liquid circulation passage 60.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a heat exchange device suitable for wear capable of regulating body temperature. [Background technology]

[0002] As temperatures rise due to global warming, working outdoors in the summer and indoors without air conditioning is becoming increasingly difficult. Working in locations close to heat sources is tough regardless of the season. Measures to prevent heatstroke are urgently needed to ensure a workforce in these extreme heat environments. In response, cooling wear that regulates body temperature by circulating cooling water near the worker's body surface has been developed in recent years.

[0003] Specifically, a technology has been proposed in which a heat exchange pad is provided on the inner surface of the wear, and cooling water is passed through water passages formed in the heat exchange pad to cool the surface of the worker's body (see, for example, Patent Document 1). The heat exchange pad and the heat exchange device are connected via flexible tubes to form a liquid circulation passage. Cooling water maintained at a low temperature can be circulated by driving a pump arranged in the liquid circulation passage. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2023-4963 Summary of the Invention [Problem to be solved by the invention]

[0005] According to the technology of Patent Document 1, the use of Peltier elements can simplify and reduce the weight of the heat exchanger. It also makes it easier to attach the heat exchanger to the clothing, reducing the burden on the worker wearing the clothing. However, there are limits to the cooling capacity of such cooling clothing. For example, in harsh environments where the temperature exceeds 40°C, it is important to increase the heat exchange efficiency to ensure cooling performance. From the perspective of improving heat exchange efficiency, it can be said that it is equally important for heat exchangers that keep things warm in low-temperature environments, not just for cooling in high-temperature environments.

[0006] The present invention has been made in view of the above-mentioned problems, and one of its objects is to improve the heat exchange efficiency of a heat exchange device that can be used to regulate body temperature. [Means for solving the problem]

[0007] One aspect of the present invention is a heat exchange device comprising: a liquid circulation passage for circulating a liquid; a flexible heat exchange pad having a flow passage forming the liquid circulation passage; an insulating pad disposed on the side opposite the heat exchange surface of the heat exchange pad; a heat exchange unit for exchanging heat with the liquid flowing through the liquid circulation passage; and a pump disposed in the liquid circulation passage.

[0008] Another aspect of the present invention is a garment capable of regulating the body temperature of a subject. The garment includes a mounting portion that is attached to a specific part of the subject's body and a heat exchanger that performs heat exchange in the mounting portion. The heat exchanger includes a liquid circulation passage that circulates a liquid, a pad provided in the mounting portion, a heat exchange unit that performs heat exchange with the liquid flowing through the liquid circulation passage, and a pump disposed in the liquid circulation passage. The pad includes a flexible heat exchange pad in which a flow passage that forms the liquid circulation passage is formed, and a heat insulating pad that is insulating and elastic and disposed on the side opposite the heat exchange surface of the heat exchange pad. [Effects of the Invention]

[0009] According to the present invention, the heat exchange efficiency of a heat exchange device that can be used to regulate body temperature can be improved. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram illustrating a garment to which a heat exchange device is applied. [Figure 2] FIG. 1 is a diagram showing the configuration of the wear. [Figure 3] FIG. 2 is a diagram illustrating a configuration of a pad. [Figure 4] FIG. 2 is a diagram illustrating a configuration of a pad. [Figure 5] 10A and 10B are diagrams illustrating a method of assembling a heat exchange pad and a heat insulating pad. [Figure 6] FIG. 2 is a diagram illustrating a configuration of a heat exchange device. [Figure 7] FIG. 2 is a diagram illustrating a configuration of a heat exchange unit. [Figure 8] FIG. 2 is a diagram illustrating a configuration of a heat exchange unit. [Figure 9] FIG. 2 is an exploded perspective view showing a heat exchange portion of the heat exchange unit. [Figure 10] FIG. 2 is a diagram illustrating a configuration of a heat exchange unit. [Figure 11] 10A and 10B are diagrams illustrating a method for installing a heat exchanger. [Figure 12] 10A and 10B are diagrams illustrating a method for installing a heat exchanger. [Figure 13] 10A and 10B are diagrams illustrating a method of filling the liquid circulation passage with cooling water. [Figure 14] 3 is a diagram showing a schematic representation of the function of each part when cooling water is filled and circulated. FIG. [Figure 15] 10A and 10B are diagrams illustrating a mounting state of a heat exchange unit according to a modified example. [Figure 16] 10A and 10B are diagrams illustrating a manner in which a battery is attached according to a modified example. [Figure 17] FIG. 10 is a diagram schematically illustrating the configuration of a bypass passage according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. For convenience, the following description may refer to the positional relationship of each structure based on the illustrated state. In the following embodiments and their modifications, substantially identical components will be designated by the same reference numerals, and their description will be omitted where appropriate.

[0012] The heat exchange device of this embodiment is attached to clothing and is used to regulate the body temperature of a human subject. This heat exchange device is capable of not only cooling in high-temperature environments but also keeping people warm in low-temperature environments, but the following description will be given of the device functioning as a cooling device in high-temperature environments.

[0013] (Ware configuration) FIG. 1 is a diagram showing a garment to which a heat exchange device is applied. The heat exchange device 1 exerts a cooling function by being attached to wear 100 worn by the subject M. The wear 100 is worn on the upper body of the subject M via innerwear 101 (such as a shirt). In this embodiment, the wear 100 has the form of a vest, but it may also have the form of a shirt, work clothes, jacket, coat, or other.

[0014] The heat exchange device 1 includes a pad 10 to which cooling water is supplied, a heat exchange unit 12 for maintaining the temperature of the cooling water at a low level, and a battery 14 for supplying power to the heat exchange unit 12. A "liquid circulation path" is formed to circulate the cooling water through the pad 10 and the heat exchange unit 12 (described in detail below). The heat exchange unit 12 has a built-in pump for circulating the cooling water. The pad 10 is attached to the inner surface of the wear 100. The pad 10 is maintained at a low temperature by the supply of cooling water, and exchanges heat with the body surface of the subject M.

[0015] The subject M is fitted with a waist support 18 and a belt 20. The waist support 18 is made of breathable mesh fabric and is detachably attached to the belt 20. The heat exchange unit 12 is detachably attached to the belt 20 and is placed on the waist of the subject M via the waist support 18. The battery 14 is housed in a pocket 22 attached to the belt 20. The heat exchange unit 12 and battery 14 are connected by a power cable 24.

[0016] 2A and 2B are diagrams showing the configuration of the garment 100. Fig. 2A is a front view, and Fig. 2B is a rear view. As shown in FIG. 2(A), the garment 100 is made of a thin, breathable fabric and has a symmetrical structure. A zipper 104 is provided on the front body 102 of the garment 100, but buttons or other opening and closing mechanisms may also be used. As also shown in FIG. 2(B), a pad 10 is disposed on the inside surface (back surface) of the garment 100, extending from the upper half of the back body 106 to the upper half of the front body 102. The front body 102 and the back body 106 correspond to the "wearing portion."

[0017] (Pad configuration) Figures 3 and 4 are diagrams showing the configuration of the pad 10. Figure 3(A) shows the inner surface of the pad 10, and Figure 3(B) shows the outer surface of the pad 10. Figure 4(A) is an enlarged view of part A in Figure 3(A). Figures 4(B) and (C) are cross-sectional views taken along the arrow BB in Figure 4(A). Figure 4(B) shows the state when cooling water is not flowing, and Figure 4(C) shows the state when cooling water is flowing.

[0018] 3(A) and 3(B), the pad 10 is formed by bonding a heat exchange pad 30 and a heat insulating pad 32 together. The heat exchange pad 30 is a flexible resin member, and is formed with a flow path 40 (internal path) for circulating cooling water. The heat insulating pad 32 is a heat insulating material that has thermal insulation properties and elasticity, and is bonded to the heat exchange pad 30 so as to overlap it.

[0019] As shown in FIG. 3(A), the heat exchange pad 30 is composed of a left pad 31L (first pad) corresponding to the left half of the subject's body and a right pad 31R (second pad) corresponding to the right half of the body, connected together. The left pad 31L and right pad 31R are arranged symmetrically with respect to the center line L of the heat exchange pad 30. When no particular distinction is made between them, they are collectively referred to as "pads 31." Each pad 31 has a back contact region 34 that contacts the subject's back, a shoulder contact region 36 that contacts the shoulders, a chest contact region 38 that contacts the chest, and a neck contact region 39 that contacts the neck. Of these regions, the back contact region 34 has the largest area.

[0020] A left-side flow passage 40L is formed in the left pad 31L, and a right-side flow passage 40R is formed in the right pad 31R. When no distinction is made between them, they will be collectively referred to as "flow passage 40." Each flow passage 40 is flat and elongated, and has a serpentine shape with multiple folded sections. Each flow passage 40 has a cooling water inlet 40a on the inside of the upper end of the pad 31 and a cooling water outlet 40b on the inside of the lower end of the pad 31. The inlet 40a is located in the neck contact region 39, and the outlet 40b is located in the back contact region 34.

[0021] More specifically, the flow passages 40 snake from side to side through the back contact region 34, extending from near the top end of the back contact region 34 along the outer edge of the pad 31, passing through the shoulder contact region 36, and reaching the chest contact region 38. They then fold back at the tip of the chest contact region 38, extending along the inner edge of the pad 31, passing through the shoulder contact region 36, and reaching the neck contact region 39. Because the neck, shoulders, chest, and back are areas of the human body that are prone to feeling cold, this layout of the flow passages 40 is suitable for regulating body temperature. Placing the pad 10 in these areas does not interfere with the subject's daily activities.

[0022] The inlet 40a of the left flow passage 40L and the inlet 40a of the right flow passage 40R are connected to the upstream side of the liquid circulation passage via a T-shaped branch pipe 42. Meanwhile, the outlet 40b of the left flow passage 40L and the outlet 40b of the right flow passage 40R are connected to the downstream side of the liquid circulation passage via a T-shaped junction pipe 44. The branch pipe 42 and the junction pipe 44 are made of resin tubes.

[0023] The branch pipe 42 has a straight pipe section 42a connecting the left and right inlets 40a and a connecting pipe section 42b that is perpendicular to the straight pipe section 42a, and is connected to the left and right inlets 40a so as to be rotatable around the axis of the straight pipe section 42a. A connecting tube (described below) that forms a liquid circulation passage is connected to the connecting pipe section 42b.

[0024] The junction pipe 44 has a straight pipe section 44a connecting the left and right outlets 40b and a connecting pipe section 44b that is perpendicular to the straight pipe section 44a, and is connected to the left and right outlets 40b so as to be rotatable around the axis of the straight pipe section 44a. A connecting tube (described later) that forms a liquid circulation passage is connected to the connecting pipe section 44b.

[0025] The heat exchange pad 30 is obtained by overlapping and welding (compressing) two resin sheets (first and second sheets). In this embodiment, the first and second sheets are vinyl chloride sheets of the same shape as the outer shape of the heat exchange pad 30, and are welded along the shape of the flow path 40. In this process, first linear welds 50a and second linear welds 50b are formed, spaced apart in the width direction of the flow path 40 to define the flow path 40, and a plurality of dot welds 52 are arranged inside the flow path 40. In this embodiment, the dot welds 52 have a circular cross section, but may have a polygonal cross section or other shapes. A peripheral weld 54 is also formed along the periphery (contour) of the pad 31.

[0026] The first linear welds 50a and the second linear welds 50b extend parallel to each other so as to maintain a substantially constant width of the flow passage 40. The point welds 52 are provided in multiple rows (two rows in this embodiment) in the width direction of the flow passage 40, and are arranged in each row from one end of the flow passage 40 to the other. The point welds 52 in each row are arranged substantially parallel to the first linear welds 50a and the second linear welds 50b. The multiple point welds 52 function as supports to stably form the cross section of the flow passage 40 and also restrict the flow of cooling water in the flow passage 40.

[0027] The flow passage 40 has a substantially constant width from one end to the other. Furthermore, because the spot welds 52 are uniformly arranged along the entire length of the flow passage 40, bulging of the heat exchange pad 30 is suppressed. As a result, the flow of cooling water is maintained stably, resulting in stable cooling performance. The serpentine shape of the flow passage 40 ensures a sufficient installation area for the flow passage 40 in the heat exchange pad 30, i.e., a sufficient heat exchange surface area. Meanwhile, by limiting the width of the flow passage 40 to a constant width rather than adopting a structure in which the entire surface of the heat exchange pad 30 is filled with cooling water (a bag-shaped flow passage), the flow of cooling water is promoted. This prevents stagnation in the heat exchange pad 30, thereby suppressing temperature increases due to cooling water accumulation. Furthermore, the two sheets constituting the heat exchange pad 30 are stably fixed together by the numerous spot welds 52. Because the serpentine folds are rounded and edgeless, stress concentration due to water pressure is unlikely to occur in the flow passage 40. Therefore, damage to the heat exchange pad 30 due to water pressure can be effectively prevented.

[0028] The space S1 surrounded by the first linear weld 50a and the peripheral weld 54, and the space S2 surrounded by the second linear weld 50b and the peripheral weld 54, are filled with air. In a modified example, these spaces may also be welded. However, leaving these spaces as spaces reduces the welding area. This simplifies the welding process, thereby reducing the manufacturing cost of the heat exchanger pad 30.

[0029] As shown in FIG. 4A, the point welds 52 are formed by forming first point welds 52a adjacent to the first linear welds 50a and second point welds 52b adjacent to the second linear welds 50b. The distance x1 between the first point welds 52a and the first linear welds 50a is smaller than the distance x2 between the second point welds 52b and the second linear welds 50b, and is also smaller than the distance x3 between adjacent point welds 52. Specifically, the distance x1 is set to be 50% or less of the distance x2. This suppresses the flow of coolant near the first linear welds 50a in the flow passages 40. When viewed from the perspective of the entire heat exchanger pad 30, the flow on the outer periphery of the flow passages 40 is suppressed.

[0030] That is, although the area near the first linear weld 50a is filled with coolant, a pressure loss is created that stops the flow during steady-state operation. On the other hand, if the flow on the inner periphery of the flow passage 40 is clogged for some reason, such as a bent heat exchanger pad 30, the flow near the first linear weld 50a is released, thereby suppressing a rise in pressure inside the heat exchanger pad 30. In other words, it is possible to prevent damage to the heat exchanger pad 30 due to excessive water pressure caused by clogging of the flow passage 40. By intentionally setting the passage width (spacing x1) at the outer periphery of the flow passage 40 small, pressure can be released when the pressure in the flow passage 40 becomes abnormally high.

[0031] In this embodiment, the distance x2 between the second point welds 52b and the second linear welds 50b is set to be approximately the same as the distance x3 between adjacent point welds 52, but they may be different. Also, in this embodiment, the width w1 (diameter) of the point welds 52 is set to be less than 30% of the width w2 of the flow path 40, and the occupancy rate of the multiple point welds 52 in the width direction of the flow path 40 is set to be less than 60%. The distance x3 between adjacent point welds 52 is set to be equal to or greater than the width w1 of the point welds 52.

[0032] As shown in Fig. 4(B), by welding the first sheet 30a and the second sheet 30b as described above, recesses are formed by the welded portions and protrusions (spaces) are formed by the unwelded portions on the surface of the heat exchange pad 30. As shown in Fig. 4(C), when cooling water flows through the heat exchange pad 30, the second sheet 30b bulges slightly toward the subject's body surface Mb in the flow path 40. This bulge forms a heat exchange surface, and exerts a cooling function by contacting the subject's body surface Mb directly or via innerwear.

[0033] Returning to FIG. 3(B), the heat insulating pad 32 is formed by connecting a left pad 33L and a right pad 33R, and has approximately the same outer shape as the heat exchange pad 30. The entire inner surface of the heat insulating pad 32 is attached so as to overlap the outer surface of the heat exchange pad 30. The heat insulating pad 32 is an insulating material with a closed-cell structure made of resin such as polyethylene (PE) or ethylene vinyl acetate (EVA), and suppresses heat transfer to the atmosphere by thermal conduction. The heat insulating pad 32 is sufficiently thicker than the heat exchange pad 30 and is a member with elasticity (cushioning properties).

[0034] To ensure flexibility, the heat insulating pad 32 has a plurality of slits 32a (first slits) extending in the left-right direction and a plurality of slits 32b (second slits) extending in the up-down direction. Depending on the location of the heat insulating pad 32, a cross-shaped slit is formed where the slits 32a and slits 32b intersect.

[0035] More specifically, to improve the conformability of the pad 10 mainly around the shoulders, the slits 32a include slits 321a cut along the periphery of the insulating pad 32 and slits 321b cut along the middle of the insulating pad 32. The slits 321a and slits 321b are alternately arranged along a line L2 extending from the upper part of the shoulder blades to the clavicles. Each of the slits 321a and slits 321b has a length of 70% or less of the cross-sectional width of the insulating pad 32 along line L2. The slits 32b include slits 322b that intersect with the slits 321b. The length of the slit 322b is 30% or less of the length of the slit 321b. The distance between the vertically adjacent slits 321a and 321b is approximately the same as the length of the slit 322b.

[0036] As shown in Figure 4(B), an aluminum alloy layer 35 is formed on the surface (one side) of the heat insulating pad 32 by aluminum vapor deposition (surface treatment). The aluminum alloy layer 35 is interposed between the heat exchange pad 30 and the heat insulating pad 32. The aluminum alloy layer 35 is a heat shielding layer (reflective layer) that blocks radiant heat, and suppresses heat exchange between the coolant flowing through the flow path 40 and the outside air (i.e., the escape of cold air from the coolant). This suppresses a temperature rise in the coolant, thereby improving the heat exchange efficiency of the heat exchange pad 30.

[0037] FIG. 5 is a diagram showing a method for assembling the heat exchange pad 30 and the heat insulating pad 32. As shown in FIG. As described above, an aluminum alloy layer 35 is formed on one side of the heat-insulating pad 32. The heat-exchange pad 30 and the heat-insulating pad 32 are attached together so that the outer surface of the heat-exchange pad 30 (the side opposite the heat-exchanging surface) abuts against the aluminum alloy layer 35. This double structure of the aluminum alloy layer 35 and the heat-insulating pad 32 prevents the cooling heat (cold air) of the heat-exchange pad 30 from escaping into the atmosphere, thereby promoting conduction to the body surface of the subject (see the outlined arrow in Figure 4(C)).

[0038] (Configuration of heat exchanger) FIG. 6 is a diagram illustrating the configuration of the heat exchange device 1. As shown in FIG. The heat exchange device 1 is constructed by connecting a pad 10 and a heat exchange unit 12 via connecting tubes 56 and 58. The pad 10 is attached to the inner surface of the wear 100 and functions as a body temperature regulating part that exchanges heat with the human body. The pad 10 has a heat exchange pad 30 on the inside and a heat insulating pad 32 on the outside. The flow passage 40 formed in the heat exchange pad 30 and the connecting tubes 56 and 58 form a liquid circulation passage 60 for circulating cooling water.

[0039] The garment 100 has a pair of left and right pockets 13 on the inner surface of the front body 102 (see FIG. 2(A)). In addition, a loop surface of a hook-and-loop fastener 15 is provided in the upper center of the back body 106 (see FIG. 2(B)). The hook surface of the hook-and-loop fastener 15 is provided on the outer surface of the insulating pad 32 at a position corresponding to the loop surface. The outer surface of the pad 10 is detachably attached to the inner surface of the garment 100 via the hook-and-loop fastener 15, and the bifurcated upper ends are respectively housed in the pair of pockets 13. In this way, the position of the pad 10 in the garment 100 is fixed. The hook-and-loop fastener 15 functions as an "attachment portion." In a modified example, the "attachment portion" may be realized by a button or other attachment structure.

[0040] The heat exchange unit 12 functions as a heat exchange section for maintaining the temperature of the cooling water at a low temperature, and is connected to the pad 10 via connection tubes 56 and 58. The heat exchange unit 12 is provided with an outlet port 62 for discharging cooled water and an inlet port 64 for introducing water returning from the pad 10. One end of the connection tube 58 is connected to the outlet port 62, and the other end is connected to the branch pipe 42. The connection tube 56 has one end connected to the inlet port 64, and the other end connected to the junction pipe 44.

[0041] A branch path 63 is provided midway through the connecting tube 56, and a check valve 65 and a discharge port 67 are provided in the branch path 63. The check valve 65 opens when the fluid pressure is equal to or greater than a set pressure, and closes when the fluid pressure is below the set pressure. The set pressure (the opening pressure of the check valve 65) is set higher than the steady-state fluid pressure at which heat exchange is performed by the heat exchange device 1. The check valve 65 opens when cooling water is filled into the flow path 40 before the garment 100 is worn (details will be described later).

[0042] The cooling water discharged from the outlet port 62 of the heat exchange unit 12 is led to the pad 10 via the connecting tube 58. This cooling water branches into left and right branches at the branch pipe 42 and is led into the left and right circulation paths 40 of the heat exchange pad 30, respectively. The cooling water exchanges heat with the body surface while passing through the left and right circulation paths 40, and is then joined at the junction pipe 44 and discharged. This cooling water is led to the inlet port 64 of the heat exchange unit 12 via the connecting tube 56 and is cooled again inside the heat exchange unit 12.

[0043] 7 to 10 are diagrams showing the configuration of the heat exchange unit 12. FIG. 7(A) is a front view showing the appearance of the heat exchange unit 12, and FIG. 7(B) is a perspective view of the internal structure seen from the front side. FIG. 8(A) is a rear view showing the appearance of the heat exchange unit 12, and FIG. 8(B) is a perspective view of the internal structure seen from the rear side. For ease of explanation, FIG. 8(A) shows a state in which the rear cover constituting the case 68 has been removed. FIG. 9 is an exploded perspective view showing the heat exchange section of the heat exchange unit 12. FIG. 10 is a cross-sectional view taken along the CC arrow in FIG. 8(A).

[0044] As shown in Figure 7, the heat exchange unit 12 is configured by housing a heat exchanger 70, a pump 72, heat dissipation fins 74, a fan 76, and a control unit 78 in a resin case 68. The heat exchanger 70 has an internal passage that forms the liquid circulation passage 60 described above. The heat exchanger 70 includes a Peltier element as a heat exchange element (described in detail below). The control unit 78 includes a circuit board on which a control circuit that drives and controls each part of the heat exchange unit 12 is mounted.

[0045] As also shown in Fig. 8, the heat exchange unit 12 has a coupling 80 that forms an inlet for cooling water, a coupling 82 that forms an outlet for cooling water, and piping 84. As also shown in Fig. 6, the coupling 80 has an inlet port 64, and a coupling 57 provided at one end of a connecting tube 56 is detachably connected to the coupling. The coupling 82 has an outlet port 62, and a coupling 59 provided at one end of a connecting tube 58 is detachably connected to the coupling. Each coupling functions as a check valve that closes the flow path when the coupling is disconnected from the other coupling, thereby preventing leakage of cooling water during installation and removal.

[0046] 8, the piping 84 includes a piping 84a connecting the coupling 80 and the inlet of the pump 72, a piping 84b connecting the outlet of the pump 72 and the inlet of the heat exchanger 70, a piping 84c connecting the outlet of the heat exchanger 70 and the coupling 82, and a piping 84d connecting the piping 84a and the piping 84c. The flow path of the piping 84a to 84c constitutes the liquid circulation passage 60. The piping 84d has a bypass passage, which will be described later, and a relief valve 152 is provided in the bypass passage (described in detail later).

[0047] The heat exchanger 70 and the fan 76 are arranged side by side, with the heat dissipation fins 74 arranged in front of them. The pump 72 is arranged next to the fan 76 at a position separated from the heat exchanger 70. Driving the fan 76 promotes heat dissipation from the heat dissipation fins 74. As shown in FIG. 1 , the rear side of the heat exchange unit 12 faces the body surface of the subject M, so the air blown by the fan 76 is directed away from the subject M.

[0048] As shown in Figure 9, the heat exchanger 70 includes a metal passage member 90 having a passage groove 88 formed therein, a seal member 92 attached to the passage member 90 to seal the passage groove 88, and a resin cover 94 assembled to cover the passage member 90. The passage member 90 is a rectangular member in plan view, and in this embodiment is made of an aluminum alloy, which has excellent thermal conductivity and is lightweight, although stainless steel or other metal materials may also be used. In this embodiment, the cover 94 is made of ABS resin (acrylonitrile butadiene styrene resin), but other resin materials with low thermal conductivity may also be used.

[0049] Passage groove 88 is provided on the upper surface of passage member 90 and has a serpentine shape with multiple folded portions. With this structure, it is possible to ensure a sufficient length of passage groove 88 in passage member 90, thereby increasing the heat exchange area of ​​heat exchanger 70. A joint 91 connected to one end (inlet) of passage groove 88 and a joint 93 connected to the other end (outlet) are provided on the side surface of passage member 90. Pipe 84b is connected to joint 91, and pipe 84c is connected to joint 93 (see FIG. 8(A)).

[0050] The sealing member 92 is a packing having a rectangular shape in a plan view, and is attached to the passage member 90 so as to cover the entire passage groove 88. The sealing member 92 is made of nitrile rubber, which has low thermal conductivity, but may also be made of other resin sheets.

[0051] The cover 94 is made of a resin material, and is therefore lightweight and has lower thermal conductivity than the passage member 90. The cover 94 has a lidded shape and is attached to the passage member 90 so as to sandwich the seal member 92. A locking protrusion 96 protrudes from the side surface of the passage member 90, and a locking hole 98 is formed in the side surface of the cover 94. By fitting the locking protrusion 96 into the locking hole 98, the cover 94 can be firmly fixed to the passage member 90.

[0052] Ribs 95 of a predetermined shape are protruding from almost the entire top surface (outer surface) of the cover 94. The ribs 95 function as a reinforcing structure that improves the strength of the cover 94. In this embodiment, the ribs 95 have a configuration in which a plurality of diamond shapes are connected together, but they may also have a configuration in which a honeycomb shape or other shapes are connected together. A plurality of spaces S3 surrounded by the ribs 95 are formed on the outer surface of the cover 94. By assembling the cover 94, the top and side surfaces of the passage member 90 are covered, but the bottom surface (first surface) is exposed. This bottom surface of the passage member 90 functions as the heat exchange surface of the heat exchanger 70.

[0053] As shown in Fig. 10, the heat exchanger 70 includes a Peltier element 110 in contact with the bottom surface of the passage member 90. The Peltier element 110 is a plate-shaped semiconductor thermoelectric element that, when energized, generates a heat absorption effect on one surface (heat absorption surface 112) and a heat generation effect on the other surface (heat generation surface 114). In this embodiment, in order to make the heat exchange unit 12 function as a cooling unit, the heat absorption surface 112 abuts against the bottom surface (first surface) of the passage member 90, and the heat generation surface 114 abuts against the heat dissipation fins 74. The heat dissipation fins 74 function as a heat sink.

[0054] The control unit 78 controls the supply of electricity to the Peltier element 110, causing the Peltier element 110 to absorb heat from the coolant flowing through the passage member 90 and maintain the temperature of the coolant at a set temperature. At this time, the heat generated by the Peltier element 110 is released into the outside air via the heat dissipation fins 74. The control unit 78 drives the fan 76 to promote heat dissipation from the heat dissipation fins 74. In this embodiment, aluminum alloy, which has excellent thermal conductivity and is lightweight, is used as the material for the passage member 90 and the heat dissipation fins 74, but stainless steel or other materials may also be used.

[0055] As described above, the passage member 90 is covered by the cover 94 except for its bottom surface, and the heat insulating material 116 is disposed to cover the cover 94. The heat insulating material 116 is a heat insulating sheet having a closed-cell structure and made of resin such as polyethylene (PE) or ethylene vinyl acetate (EVA). A space S3 surrounded by ribs 95 is formed between the outer surface of the cover 94 and the heat insulating material 116. The space S3 functions as an insulated space formed by an air layer. That is, by covering the periphery of the passage member 90 with the cover 94, which has low thermal conductivity, and surrounding that periphery with the heat insulating material 116, and further forming an insulated space formed by an air layer, a high heat insulating effect can be obtained. As a result, heat exchange between the coolant and the outside air can be suppressed, and the coolant can be cooled efficiently.

[0056] (How to install the heat exchanger 1) 11 and 12 are diagrams showing how to wear the heat exchange device 1. Fig. 11 shows how the pad 10 is worn (around the shoulders and neck), and Fig. 12 shows how the heat exchange unit 12 is worn. 11, the subject M wears the wearable garment 100 with the pad 10 attached to the inner surface. As described above, the heat exchange pad 30 and the heat insulating pad 32 are flexible, so the pad 10 deforms to fit the shape of the subject M's body surface.

[0057] At this time, the horizontal slits 32a and the vertical slits 32b autonomously adjust their opening widths, so there is less resistance when putting on the garment 100 and it is easier for the garment 100 to follow the movements of the subject M after putting on the garment 100. In other words, when putting on the garment 100, the opening width of the slits 32a becomes larger, so the pad 10 can bend more easily in the vertical direction and fit the shape of the body surface more easily. When the subject M moves their upper body, the opening width of the slits 32b expands or contracts, reducing the resistance received from the pad 10.

[0058] Furthermore, because the insulating pad 32 is elastic and has an appropriate thickness to be interposed between the garment 100 and the body surface, it is appropriately compressed when the garment 100 is worn, biasing the heat exchange pad 30 toward the body surface. As a result, the heat exchange pad 30 can be easily fitted to the shape of the body surface, facilitating heat exchange with the cooling water. In other words, the heat exchange efficiency of the heat exchange pad 30 can be improved.

[0059] As shown in Fig. 12, a pair of hooks 120 are provided on the left and right side surfaces of the case 68 of the heat exchange unit 12. The belt 20 includes a left belt 20L and a right belt 20R, with buckles 122, 124 attached to the ends of each belt. The pocket 22 is detachable from the belt 20, and in this embodiment is attached to the right belt 20R, but may also be attached to the left belt 20L. The battery 14 is supported in a removable manner in the pocket 22. By wearing the belt 20, the subject can work while wearing the heat exchange unit 12 and battery 14, thereby improving workability, such as allowing for a wider range of movement.

[0060] (How to fill with cooling water) In this embodiment, in order to reduce the weight of the heat exchanger 1, no tank for storing cooling water is provided in the liquid circulation passage 60. Therefore, before the heat exchanger 1 is used, the liquid circulation passage 60 is filled with cooling water.

[0061] 13 is a diagram showing a method of filling the liquid circulation passage 60 with cooling water. The arrows in the figure indicate the flow of water when filling the liquid circulation passage 60 with cooling water. When filling the cooling water tank with water, a water supply source 130 and a drain receiver 132 are prepared. These may be containers such as a beaker or bucket that can store water. A sufficient amount of cooling water is stored in the water supply source 130. The drain receiver 132 may be an empty container. Then, a coupling 136, which is one end of a water supply tube 134, is connected to the coupling 80 that constitutes the inlet of the heat exchange unit 12, and a coupling 59 of the connection tube 58 is connected to the coupling 82 that constitutes the outlet of the heat exchange unit 12. The water supply tube 134 is prepared separately for the water supply process, and the other end is placed in the cooling water of the water supply source 130. The drain receiver 132 is placed below the outlet 67 of the connection tube 56.

[0062] In this state, the pump 72 of the heat exchange unit 12 is driven. This causes cooling water to be drawn up from the water supply source 130 and introduced into the left flow passage 40L and the right flow passage 40R via the connecting tube 58 and the branch pipe 42. After filling each flow passage, the cooling water merges at the junction pipe 44 and is then led to the connecting tube 56. At this time, air within the flow passage 40 is pushed out through the outlet 67. After filling the flow passage 40, the cooling water leaks out of the outlet 67 into the drain receiver 132. However, because the check valve 65 is functioning, the amount of cooling water leakage is kept to a minimum. After the flow passage 40 is filled with cooling water in this way, the pump 72 is stopped.

[0063] Thereafter, the coupling 136 of the water supply tube 134 is removed from the coupling 80 of the heat exchange unit 12, and the coupling 57 is connected to the coupling 80. This fills the liquid circulation passage 60 with cooling water. Each coupling functions as a check valve that closes the flow path when the coupling is disconnected from the other coupling, preventing leakage of cooling water during such attachment and detachment, and maintaining the filled state. As described above, the check valve 65 also functions to prevent leakage of cooling water from the outlet 67.

[0064] Figure 14 is a diagram showing the function of each part when the cooling water is filled and circulated. Figure 14(A) shows the state when the cooling water is filled, and Figure 14(B) shows the state when the cooling water is circulated. The pump 72 of the heat exchange unit 12 is a so-called diaphragm pump. The pump 72 includes a diaphragm 140 that defines a working chamber in which the fluid is compressed, a check valve 142 disposed upstream of the working chamber, a check valve 144 disposed downstream of the working chamber, and a drive unit 146 that drives the diaphragm 140. The check valves 142 and 144 are alternately opened by the operation of the diaphragm 140, thereby pumping up the cooling water. For example, the pump described in Patent Document 1 (JP 2023-4963 A) can be used as such a diaphragm pump. A heat exchanger 70 is located downstream of the heat exchange unit 12.

[0065] As shown in Figure 14(A), when cooling water is being filled, the drive of pump 72 operates diaphragm 140, which causes check valves 142 and 144 to open alternately, thereby pumping up cooling water. This cooling water is supplied to flow passage 40. At this time, because coupling 57 is in a disconnected state, check valve 65 opens due to the discharge pressure of pump 72, and air is discharged from outlet 67. When cooling water begins to be discharged from outlet 67, it is determined that flow passage 40 is in a filled state, so pump 72 is stopped. As a result, the discharge pressure of pump 72 disappears, and check valve 65 closes.

[0066] 14(B), by connecting the coupling 57 to the coupling 80 in this state, the liquid circulation passage 60 is formed. Because both the heat exchange unit 12 and the flow passage 40 are filled with cooling water, the entire liquid circulation passage 60 is filled with cooling water. Then, by driving the pump 72, the cooling water can be circulated in the liquid circulation passage 60. At this time, the discharge pressure of the pump 72 is consumed for circulating the cooling water, so that no pressure exceeding the valve opening pressure acts on the check valve 65, and the check valve 65 remains closed.

[0067] In this embodiment, a structure is provided that can suppress a pressure increase in the liquid circulation passage 60 so that the heat exchange pad 30 will not be damaged even if the water flow pressure increases due to, for example, foreign matter clogging the flow passage 40 of the heat exchange pad 30 during operation of the heat exchange device 1. That is, a bypass passage 150 is provided that connects a branch point P1 and a junction point P2 set outside the heat exchange pad 30 in the liquid circulation passage 60, and a relief valve 152 is provided in the bypass passage 150.

[0068] Specifically, a bypass passage 150 is provided inside the heat exchange unit 12. A branch point P1 is provided upstream of the coupling 82, and a junction P2 is provided downstream of the coupling 80. The opening pressure of the relief valve 152 is set to be greater than the steady-state loss pressure when cooling water flows through the flow passage 40, but smaller than the damage pressure that would cause damage to the heat exchange pad 30.

[0069] As described above, in this embodiment, the heat exchange pad 30 and the insulating pad 32 are overlapped to form the pad 10, which is attached to the inner surface of the garment 100. When the subject wears the garment 100, the heat exchange pad 30 is positioned on the body surface side, and the insulating pad 32 is positioned on the opposite side from the body surface. Therefore, when cooling water is circulated through the liquid circulation passage 60, heat transfer from the heat exchange pad 30 to the outside air (loss of cool air) can be suppressed, and as a result, heat exchange between the heat exchange pad 30 and the body surface can be promoted. In other words, heat exchange between the human body and the refrigerant can be promoted while heat exchange between objects other than the human body and the refrigerant can be suppressed, and the heat exchange efficiency of the heat exchange device 1 can be improved.

[0070] In particular, because the heat insulating pad 32 is elastic, the heat exchange pad 30 is biased toward the body surface when the subject puts on the wearable garment 100. As a result, the heat exchange pad 30 can easily conform to the shape of the body surface and easily follow changes in the shape of the body surface caused by the subject's movements, thereby facilitating heat exchange with the cooling water.

[0071] In this embodiment, a heat shield layer made of an aluminum alloy layer 35 is provided between the heat insulating pad 32 and the heat exchange pad 30, which further suppresses heat exchange between the cooling water and the outside air. As a result, the efficiency of heat exchange between the cooling water and the body surface can be further improved.

[0072] In this embodiment, the passage member 90 through which the cooling water flows in the heat exchange unit 12 is made of a metal with high thermal conductivity, and the heat exchange surface (first surface) is in contact with the Peltier element, while the other surfaces are covered with a resin cover with low thermal conductivity to suppress heat exchange with the outside. This also greatly contributes to improving the heat exchange efficiency of the heat exchange device 1.

[0073] Furthermore, in this embodiment, by filling the liquid circulation passage 60 with cooling water prior to use of the heat exchanger 1, the heat exchanger 1 can be configured as a tankless system. This allows for the heat exchanger 1 to be simplified and lightweight, making it easier to attach to an appliance or the like. This also reduces the burden on the person wearing the appliance or the like.

[0074] Although the preferred embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to this specific embodiment, and various modifications are possible within the scope of the technical concept of the present invention.

[0075] [Variations] FIG. 15 is a diagram showing a mounting state of a heat exchange unit according to a modified example. In this modification, a shoulder belt 210 is used as the belt for the heat exchange unit 12. A pair of left and right hooks 212 are provided on the top surface of the case 68, to which a left belt 214L and a right belt 214R are attached, respectively. Buckles 216 and 218 are attached to the ends of each belt. The shoulder belt 210 is formed by connecting the buckle 122 to the buckle 216 and the buckle 124 to the buckle 218. In this way, a shoulder-hanging type structure may be adopted. A sash may be used instead of the shoulder belt 210.

[0076] FIG. 16 is a diagram showing a mounting state of the battery 14 according to a modified example. In the above embodiment, a configuration has been exemplified in which the heat exchange unit 12 and the battery 14 are separately attached to the belt 20 (see FIG. 12). In a modified example, the battery 14 may be attached to the heat exchange unit 12, and only the heat exchange unit 12 may be attached to the belt 20.

[0077] For example, the battery 14 may be housed (built-in) in the case 268 of the heat exchange unit (FIG. 16(A)). Alternatively, the battery 14 may be attached to the outside of the case 68 of the heat exchange unit via an attachment member 270 (FIG. 16(B)). The heat exchange unit is then attached to a belt. This configuration eliminates the need to attach the battery separately to the belt, making it easier to put the heat exchange device 1 on the subject. It is also convenient in terms of ensuring work space for the subject. Such a heat exchange device can be expressed, for example, as follows:

[0078] a liquid circulation passage for circulating the liquid; a heat exchange pad having flexibility and having a flow passage that constitutes the liquid circulation passage formed therein; a heat exchange unit that exchanges heat with the liquid flowing through the liquid circulation passage; a pump disposed in the liquid circulation passage; a battery for supplying power to the heat exchange unit; Equipped with The heat exchange device is characterized in that the battery is built into the case of the heat exchange unit or attached to the case.

[0079] 17A and 17B are diagrams showing a schematic configuration of a bypass passage according to a modified example, in which Fig. 17A shows the state when the cooling water is filled, and Fig. 17B shows the state when the cooling water is circulating. In this modified example, a bypass passage 150 is provided outside the heat exchange unit 12. A branch point P1 is provided downstream of the coupling 59, and a junction point P2 is provided upstream of the coupling 57. The opening pressure of the relief valve 152 is the same as in the above embodiment. Even with this configuration, an abnormal increase in water pressure in the liquid circulation passage 60 can be prevented or suppressed.

[0080] In the above embodiment, aluminum is vapor-deposited on the surface of the heat insulating pad 32 that comes into contact with the heat exchange pad 30, thereby forming the aluminum alloy layer 35. In a modified example, aluminum may be vapor-deposited on the surface of the heat exchange pad 30 that comes into contact with the heat exchange pad 30. Alternatively, the aluminum alloy layer may be formed by interposing an aluminum sheet (reflective sheet) such as aluminum foil between the heat insulating pad 32 and the heat exchange pad 30.

[0081] In the above embodiment, an example has been shown in which the heat exchange device 1 is configured as a cooling device that functions in a high-temperature environment. That is, the pad 10 functions as a "heat-absorbing pad" and the heat exchange unit 12 functions as a "cooling unit."

[0082] In a modified example, the heat exchanger may be configured as a heat-retaining device that functions in low-temperature environments. In this case, hot water circulates as a fluid through the liquid circulation passage. Specifically, by arranging the Peltier element shown in FIG. 10 upside down, the heat exchanger side can be used as the heat-generating surface and the heat-dissipating fin side can be used as the heat-absorbing surface. This allows the temperature of the hot water flowing through the piping to be maintained at a moderate level. By attaching this heat exchanger to the subject's orthosis, etc., workability in low-temperature environments can be improved.

[0083] In the above embodiment, the fluid (refrigerant) circulating through the liquid circulation passage 60 is water, but it may be a coolant or other liquid.

[0084] In the above embodiment and modified example, a Peltier element is used as the heat exchange element, but elements that exhibit the Thomson effect or other elements can also be used. When a cooling effect is to be exerted as a heat exchange unit, a refrigeration cycle that circulates a refrigerant can also be employed. When a heat retention effect is to be exerted, a heater can also be employed. However, in order to simultaneously achieve simplification and weight reduction of the heat exchange device, it is preferable to employ a heat exchange element such as that in the above embodiment.

[0085] In the above embodiment, the heat exchange device is applied to a garment. In a modified example, the heat exchange device may be applied to an appliance that is attached to a specific part of a living body, such as an affected area.

[0086] In the above embodiment, an example has been shown in which the fluid inlet 40a in the flow passage 40 is located in the neck contact region 39, and the outlet 40b is located in the back contact region 34. In a modified example, the fluid inlet 40a may be located in the back contact region 34, and the outlet 40b may be located in the neck contact region 39.

[0087] In the above embodiment, a configuration has been exemplified in which a pair of tip ends of the pad 10 are housed in a pair of pockets 13 provided in the front body 102 of the garment 100. In a modified example, instead of the pockets 13, a belt-shaped guide (band) may be provided, and the tip end of the pad 10 may be inserted and supported.

[0088] In the above embodiment, the belt 20 is a waist belt that is wound around the waist. In a modified example, the belt 20 may be used as a chest belt that is wound around the chest.

[0089] In the heat exchange device 1 of the above embodiment, structural improvements were made to improve the heat exchange efficiency in both the pad 10 and the heat exchange unit 12. From the viewpoint of solving the problem of improving the heat exchange efficiency, a certain degree of effect can be obtained only with the configuration of the latter heat exchange unit 12. Such a heat exchange device can be expressed, for example, as follows.

[0090] a liquid circulation passage for circulating the liquid; a heat exchange pad having flexibility and having a flow passage that constitutes the liquid circulation passage formed therein; a heat exchange unit that exchanges heat with the liquid flowing through the liquid circulation passage; a pump disposed in the liquid circulation passage; Equipped with The heat exchange unit comprises: a metal passage member having a passage groove that constitutes the liquid circulation passage; a resin cover that covers the passage member while exposing a first surface of the passage member; a heat exchange element in contact with the first surface of the passage member; A heat exchange device comprising: Such a heat exchange device may be applied to clothing or appliances.

[0091] The heat exchanger 1 of the above embodiment is provided with a bypass passage 150 in the liquid circulation passage 60, and a relief valve 152 is disposed in the bypass passage 150. This prevents damage to the heat exchanger pad 30 due to a pressure increase even if the flow of coolant through the heat exchanger pad 30 is obstructed for some reason, thereby solving the problem of improving the durability of the heat exchanger 1. Such a heat exchanger can be expressed, for example, as follows:

[0092] a liquid circulation passage for circulating the liquid; a heat exchange pad in which a flow passage constituting the liquid circulation passage is formed; a heat exchange unit that exchanges heat with the liquid flowing through the liquid circulation passage; a pump disposed in the liquid circulation passage; a bypass passage connecting a branch point and a junction point of the liquid circulation passage, the branch point and the junction point being set outside the heat exchange pad; a relief valve provided in the bypass passage; Equipped with A heat exchange device characterized in that the opening pressure of the relief valve is set to be greater than the steady-state loss pressure when fluid flows through the flow passage and smaller than the damage pressure that causes damage to the heat exchange pad. Such a heat exchange device may be applied to clothing or appliances.

[0093] The present invention is not limited to the above-described embodiments and modifications, and the components can be modified without departing from the spirit of the invention. Various inventions can be formed by appropriately combining multiple components disclosed in the above-described embodiments and modifications. Furthermore, some components may be omitted from all the components shown in the above-described embodiments and modifications. [Explanation of symbols]

[0094] 1 heat exchange device, 10 pad, 12 heat exchange unit, 13 pocket, 14 battery, 15 hook-and-loop fastener, 20 belt, 22 pocket, 30 heat exchange pad, 30a first sheet, 30b second sheet, 32 heat insulating pad, 32a slit, 32b slit, 34 back contact area, 35 aluminum alloy layer, 36 shoulder contact area, 38 chest contact area, 39 neck contact area, 40 circulation passage, 40a inlet, 40b outlet, 50a first linear welded portion, 50b second linear welded portion, 52 spot welded portion, 54 peripheral welded portion, 56 connecting tube, 58 connecting tube, 60 liquid circulation passage, 62 outlet port, 64 introduction port, 65 check valve, 67 discharge port, 68 case, 70 heat exchanger, 72 Pump, 74 heat dissipation fin, 76 fan, 78 control unit, 84 piping, 88 passage groove, 90 passage member, 92 sealing member, 94 cover, 95 rib, 100 wear, 102 front body, 106 back body, 110 Peltier element, 112 heat absorption surface, 114 heat generation surface, 116 insulation material, 134 water supply tube, 140 diaphragm, 142 check valve, 144 check valve, 146 drive unit, 150 bypass passage, 152 relief valve, 210 shoulder belt, 268 case, M subject, Mb body surface, P1 branch point, P2 confluence point, S3 space.

Claims

1. a liquid circulation passage for circulating the liquid; a heat exchange pad having flexibility and having a flow passage that constitutes the liquid circulation passage formed therein; a heat insulating pad having heat insulating properties and disposed on the opposite side of the heat exchange pad from the heat exchange surface; a heat exchange unit that exchanges heat with the liquid flowing through the liquid circulation passage; a pump disposed in the liquid circulation passage; A heat exchange device comprising:

2. 2. The heat exchange device according to claim 1, wherein a heat shield layer is interposed between the heat exchange pad and the heat insulating pad.

3. 3. The heat exchange device according to claim 2, wherein an aluminum alloy layer is disposed or formed on the surface of the heat insulating pad as the heat shield layer.

4. the heat exchange pad is obtained by stacking a first resin sheet and a second resin sheet and welding them together along the shape of the flow path, the flow passage is flat and elongated, and has a serpentine shape with a plurality of folded portions, and the folded portions are formed in a round shape; 3. The heat exchange device according to claim 1, wherein an inlet for fluid is formed at one end of the flow passage, and an outlet for fluid is formed at the other end.

5. the heat exchange pad has, as welds for welding the first sheet and the second sheet, first linear welds and second linear welds that are spaced apart in the width direction of the flow passage to define the flow passage, and a plurality of dot welds that are arranged inside the flow passage to restrict the flow of liquid, 5. The heat exchange device according to claim 4, wherein the plurality of spot welds are arranged from one end to the other end of the flow passage.

6. 6. The heat exchange device according to claim 5, wherein the spot welds are provided in a plurality of rows in the width direction of the flow passage, and each row is arranged from one end to the other end of the flow passage.

7. the point welds include a first point weld that is adjacent to the first linear weld and a second point weld that is adjacent to the second linear weld, The heat exchange device according to claim 6, characterized in that the distance between the first dot weld and the first linear weld is smaller than the distance between the second dot weld and the second linear weld, and is also smaller than the distance between adjacent dot welds.

8. The heat insulating pad has elasticity, 3. The heat exchange device according to claim 1, wherein the heat insulating pad has a detachable attachment portion on the side opposite the heat exchange pad that can be attached to the inner surface of clothing or equipment worn by the subject.

9. a bypass passage connecting a branch point and a junction point of the liquid circulation passage, the branch point and the junction point being set outside the heat exchange pad; a relief valve provided in the bypass passage; Furthermore, 3. The heat exchange device according to claim 1, wherein the relief valve has an opening pressure set to be greater than the steady-state loss pressure when fluid flows through the flow passage and less than the damage pressure that would cause damage to the heat exchange pad.

10. The heat exchange unit comprises: a metal passage member having a passage groove that forms the liquid circulation passage; a resin cover that covers the passage member while exposing a first surface of the passage member; a heat exchange element in contact with the first surface of the passage member; The heat exchange device according to claim 1 , further comprising:

11. a reinforcing structure formed by ribs protruding from the outer surface of the cover; a heat insulating material attached to the outer surface of the cover so as to abut against the rib; Including, The heat exchange device according to claim 10, wherein an insulating space surrounded by the ribs is formed between the outer surface of the cover and the insulating material.

12. a battery for supplying power to the heat exchange unit; 2. The heat exchange device according to claim 1, wherein the battery is built into a case of the heat exchange unit or attached to the case.

13. The garment is capable of regulating the subject's body temperature, A mounting unit that is mounted on a specific part of the subject; a heat exchange device that performs heat exchange in the mounting portion; Equipped with The heat exchange device is a liquid circulation passage for circulating the liquid; A pad provided on the attachment portion; a heat exchange unit that exchanges heat with the liquid flowing through the liquid circulation passage; a pump disposed in the liquid circulation passage; Including, The pad is a heat exchange pad having flexibility and having a flow passage that constitutes the liquid circulation passage formed therein; a heat insulating pad having heat insulating properties and elasticity and disposed on the side opposite to the heat exchanging surface of the heat exchange pad; A garment characterized by comprising:

14. 14. The garment according to claim 13, wherein the heat insulating pad has detachable attachment portions on the inner surfaces of the front and rear body sections of the garment on the side opposite to the heat exchange pad.

15. The heat exchange pads include a first pad corresponding to the left half of the subject's body and a second pad corresponding to the right half of the subject's body, an inlet of the flow passage in the first pad and an inlet of the flow passage in the second pad are connected to an upstream side of the liquid circulation passage via a branch pipe; 15. The garment according to claim 13, wherein an outlet of the flow passage in the first pad and an outlet of the flow passage in the second pad are connected to the downstream side of the liquid circulation passage via a junction pipe.

16. 15. The garment according to claim 13, wherein the heat insulating pad is formed with a plurality of first slits extending in the left-right direction and a plurality of second slits extending in the up-down direction.

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