Heat exchanger, evaporator, device, and moving object

Abstract

The heat exchanger according to the present invention is provided with an evaporator provided with an evaporation body that absorbs heat from the outside and evaporates a liquid-phase working fluid into a gas phase while moving the liquid-phase working fluid by capillary force, and the heat exchanger condenses the gas-phase working fluid led out from the evaporator and returns the liquid-phase working fluid to the evaporator, the inside of the evaporator is partitioned by an evaporation body, and the evaporator has: a liquid phase accommodation chamber provided on one side when viewed from the evaporation body, the liquid phase accommodation chamber accommodating a working fluid in a liquid phase; and a gas-phase accommodating chamber provided on the opposite side of the liquid-phase accommodating chamber with the evaporation body interposed therebetween and accommodating a gas-phase working fluid, the evaporator being provided with a pressing body that is provided on the liquid-phase accommodating chamber side when viewed from the evaporation body and that presses the liquid-phase accommodating chamber-side side surface of the evaporation body, the evaporation body having a pressed portion, and the pressing body being provided on the liquid-phase accommodating chamber side surface of the evaporation body. The pressed portion is a portion pressed by the pressing body and has higher toughness than a portion not pressed by the pressing body.

Description

Technical Field

[0001] This disclosure relates to heat exchangers, evaporators, apparatuses, and moving bodies. Background Technology

[0002] Patent document 1 discloses a loop-type heat pipe for efficiently cooling a heat-generating component regardless of its installation angle. The heat pipe has an evaporation section, a condensation section, and a return pipe inside, and has a wick that generates capillary force.

[0003] Existing technical documents Patent documents Patent Document 1: Japanese Patent Application Publication No. 2008-215702 Summary of the Invention

[0004] The problem that the invention aims to solve Furthermore, in recent years, the development of electric vehicles has been promoted as part of environmental protection measures. With the development of electric vehicles, the performance of semiconductors used to control their motors has become increasingly sophisticated. However, this improved semiconductor performance leads to an increase in the heat generated by the semiconductors, thus requiring heat exchangers and other devices that efficiently remove heat flux from the semiconductors.

[0005] Here, heat exchangers and the like installed in automobiles can sometimes be damaged due to external impacts, such as evaporators.

[0006] Therefore, the purpose of the technology disclosed in this specification is to manufacture heat exchangers and the like that which prevent damage to the evaporator.

[0007] Solution for solving the problem Based on the above objectives, the technology disclosed in this specification is a heat exchanger having an evaporator. The evaporator is provided with an evaporator body that absorbs heat from the outside and evaporates a liquid working fluid into a gaseous phase while moving it through capillary force. The heat exchanger causes the gaseous working fluid exiting the evaporator to condense and return to the evaporator as a liquid working fluid. The interior of the evaporator is separated by the evaporator body, and the evaporator has: a liquid phase containment chamber located on one side when viewed from the evaporator body, containing the liquid working fluid; and a gas phase containment chamber located on the opposite side of the liquid phase containment chamber across the evaporator body, containing the gaseous working fluid. The evaporator includes a pressing body located on the liquid phase containment chamber side when viewed from the evaporator body, pressing the side of the evaporator body on the liquid phase containment chamber side. The evaporator body has a pressed portion, which is the portion pressed by the pressing body and has higher toughness than the portion not pressed by the pressing body.

[0008] Invention Effects Based on the technology disclosed in this specification, heat exchangers and the like that can be provided to prevent damage to the evaporator can be provided. Attached Figure Description

[0009] Figure 1 It is a schematic diagram showing the basic structure of a car.

[0010] Figure 2 This is a perspective view of the evaporator according to this embodiment.

[0011] Figure 3 This is an exploded perspective view of the evaporator according to this embodiment.

[0012] Figure 4 This is a three-dimensional exploded view of a liquid-phase container.

[0013] Figure 5 This is an exploded three-dimensional view of the liquid-absorbing core container.

[0014] Figure 6 This is a detailed structural diagram of the contained object.

[0015] Figure 7 yes Figure 2 A schematic diagram of the cross section on plane VII-VII.

[0016] Figure 8 This is a diagram illustrating the configuration of the evaporator.

[0017] Figure 9 This is a diagram illustrating the first variation.

[0018] Figure 10 This is a diagram illustrating the second variation.

[0019] Figure 11 This is a diagram illustrating the third variation. Detailed Implementation

[0020] Hereinafter, this embodiment will be described in detail with reference to the accompanying drawings.

[0021] <The Composition of Car 1> Figure 1 This is a schematic diagram showing the basic structure of car 1.

[0022] First, refer to Figure 1 The general configuration of the automobile 1 using this embodiment will be described.

[0023] The car 1 is a so-called electric vehicle. The car 1 has a heating element 50 and a loop-type heat pipe 10 for cooling the heating element 50.

[0024] The heating element 50 is a control device for controlling the motor 30 installed in the automobile 1. To further explain, the heating element 50 is a driving element of the inverter that drives the motor 30. The heating element 50 is, for example, made of SiC semiconductor.

[0025] The loop-type heat pipe 10 is an example of a cooling element. The loop-type heat pipe 10 is configured to circulate the working fluid to cool the heat source 50 without requiring external power.

[0026] In detail, the loop heat pipe 10 includes: an evaporator 101 that uses the latent heat of the working fluid during vaporization to evaporate the working fluid to cool the heating element 50; and a condenser 105 that dissipates heat via the heat sink 70 to liquefy the working fluid vaporized by the evaporator 101.

[0027] Furthermore, the loop-type heat pipe 10 includes: a vapor line 107 that delivers the working fluid, vaporized by the evaporator 101, to the condenser 105; and a liquid line 109 that delivers the working fluid, liquefied by the condenser 105, to the evaporator 101. It should be noted that the loop-type heat pipe 10 is filled with a working fluid that undergoes a phase change between the liquid and gas phases. Furthermore, the working fluid can be, for example, water, alcohols, ammonia, etc.

[0028] The steam pipe 107 and the liquid pipe 109 are conveying pipes for transporting the working fluid. The steam pipe 107 and the liquid pipe 109 are hollow components formed of stainless steel, resin, or the like. It should be noted that the steam pipe 107 and the liquid pipe 109 can also be configured to be flexible and deformable to facilitate assembly into the vehicle 1.

[0029] <Operation of Loop Heat Pipe 10> Next, refer to Figure 1 The operation of the loop-type heat pipe 10 will be explained.

[0030] First, the heat generated in the heating element 50 is transferred to the evaporator 101 (see arrow C1). The working fluid, having absorbed heat in the evaporator 101, vaporizes and is sent to the condenser 105 via the steam pipe 107 (see arrow A1). The working fluid sent to the condenser 105 liquefies by dissipating heat through the heat sink 70 (see arrow C2). Then, the liquefied working fluid is sent back to the evaporator 101 via the liquid pipe 109 as a so-called return liquid (see arrow A4).

[0031] Here, as Figure 1As shown, the condenser 105 is provided in a manner thermally connected to the heat sink 70. The condenser 105 has a condenser flow path 106 that is arranged in a tortuous manner. In addition, the heat sink 70 has heat sink fins 701 that are thermally connected to the condenser flow path 106. Then, the gaseous working fluid moves inside the condenser flow path 106 while discharging heat to the heat sink 701, thereby liquefying the gaseous working fluid.

[0032] Furthermore, the loop-type heat pipe 10 is a gas-liquid two-phase heat transport device that utilizes the capillary force generated by the porous material. As described above, this loop-type heat pipe 10 cools the motor control converter, i.e., the heating element 50, of the automobile 1.

[0033] While not specifically limited, the permissible temperature of the loop-type heat pipe 10 is, for example, 200°C, and the maximum heat load is 3kW. Furthermore, the delivery distance of the loop-type heat pipe 10 is 3m to 5m. Moreover, the loop-type heat pipe 10 utilizes the latent heat of the working fluid, enabling efficient heat transfer. Furthermore, the loop-type heat pipe 10 can be a lightweight and compact cooling device. Furthermore, the loop-type heat pipe 10 utilizes capillary force, thus eliminating the need for electricity as required by pumps (unlike in this embodiment), and also eliminating the need for pump maintenance. Furthermore, the loop-type heat pipe 10 utilizes delivery pipes, therefore it can be mounted using a mechanism common to current mainstream liquid cooling methods.

[0034] It should be noted that in the following description, the direction of travel of vehicle 1, i.e., the front-to-back direction of vehicle 1, is sometimes referred to simply as the front-to-back direction. Furthermore, the direction orthogonal to the front-to-back direction, i.e., the width direction of vehicle 1, is sometimes referred to simply as the width direction. Additionally, the direction orthogonal to both the front-to-back and width directions, i.e., the vertical direction of vehicle 1, is sometimes referred to simply as the vertical direction. It should be noted that the names of the front-to-back direction and other orientations used here are for convenience and do not limit the orientation in which the loop-type heat pipe 10 is installed.

[0035] <Evaporator 101> (Simplified structure of evaporator 101) Figure 2 This is a perspective view of the evaporator 101 of this embodiment.

[0036] Next, refer to Figure 2 The general configuration of the evaporator 101 according to this embodiment will be described.

[0037] like Figure 2 As shown, the evaporator 101 includes: a compensator 210 that contains a liquid working fluid; and an evaporator body 310 located below the compensator 210 to vaporize the liquid working fluid contained therein.

[0038] In the illustrated example, the compensator chamber 210 is a generally cylindrical hollow component. Furthermore, the axial direction of the compensator chamber 210, i.e., the longitudinal direction of the compensator chamber 210, is arranged along the longitudinal direction. This arrangement facilitates airflow around the outer periphery of the compensator chamber 210, for example, when the vehicle 1 is in motion. As a result, temperature rise in the compensator chamber 210 can be suppressed.

[0039] Furthermore, in the illustrated example, the evaporator body 310 is a generally flat plate. Additionally, the compensator 210's plate surface is arranged along the front-to-back direction. This arrangement facilitates airflow around the evaporator body 310, such as when the vehicle 1 is in motion. As a result, the temperature rise of the evaporator body 310 can be suppressed.

[0040] (Detailed composition of evaporator 101) Figure 3 This is an exploded perspective view of the evaporator 101 according to this embodiment. Further explanation would follow... Figure 3 (A) is an exploded stereograph viewed from one side in the width direction. Figure 3 (B) is a decomposed stereograph viewed from the other side in the width direction.

[0041] Next, refer to Figure 3 The detailed configuration of the evaporator 101 according to this embodiment will be described.

[0042] The evaporator 101 includes: a liquid phase container 110; a container 130 disposed on one side of the liquid phase container 110 in the width direction; and a suction core container 170 disposed on one side of the container 130 in the width direction. In addition, the container 130 includes: a spacer 140; and a suction core 150 disposed on one side of the spacer 140 in the width direction.

[0043] The liquid phase container 110 and the wick container 170 have flange structures and are fixed to each other by bolts (not shown). Further explanation is needed, as the contained object 130 is positioned between the liquid phase container 110 and the wick container 170. Furthermore, the liquid phase container 110 and the wick container 170 are fixed to each other by passing through a through hole 224 in the liquid phase container 110 and a through hole 274 in the wick container 170 with a diameter of 6 mm. It should be noted that the liquid phase container 110 and the wick container 170 constitute a shell that internally accommodates the contained object 130. Moreover, the liquid phase container 110 and the wick container 170 are formed, for example, of a metal such as stainless steel or resin.

[0044] Here, a heating element 50 is provided on the side of the liquid-absorbing core container 170 facing the width direction, i.e., the heated surface 175 (see reference). Figure 1 To elaborate further, the heated surface 175 is provided in a manner that is thermally connected to the heating element 50. Thus, the evaporator 101 is configured to receive heat from the heating element 50 via the heated surface 175.

[0045] <Liquid container 110> Figure 4 This is an exploded three-dimensional view of the liquid container 110.

[0046] Next, refer to Figure 4 The detailed structure of the liquid phase container 110 is explained below.

[0047] The liquid container 110 includes a compensator 210 and a liquid reservoir 220 disposed on the lower side of the compensator 210 in the vertical direction. The constituent components constituting the compensator 210 and the liquid reservoir 220 are fixed by known methods such as welding.

[0048] The compensator 210 is a cylindrical component. The compensator 210 includes a generally circular first side plate 213, a cylindrical compensator body 215, and a generally circular second side plate 217. The first side plate 213 has an inlet 214, which is a through hole formed in the center of the plate surface. A liquid pipe 109 is connected to this inlet 214. That is, the liquid working fluid flows into the compensator 210 from the liquid pipe 109 through the inlet 214. It should be noted that the dimensions of the liquid pipe 109 are not particularly limited, but the outer diameter is 6 mm and the inner diameter is 5 mm.

[0049] Furthermore, the compensator body 215 has a compensator side opening 216 that opens towards the lower side of the compensator body 215. The compensator side opening 216 is a generally rectangular slit formed along the longitudinal direction. The compensator side opening 216 is configured to be continuous with the interior of the liquid reservoir 220.

[0050] The liquid storage section 220 is a flat plate-shaped component. In the illustrated example, the liquid storage section 220 includes a liquid storage body 221 and a liquid-side cover 223 that covers the body 221.

[0051] Here, the liquid storage body 221 is a plate-shaped component that is roughly rectangular when viewed from above. The liquid storage body 221 includes: a liquid-side opening 222, which is a through hole located in the center of the plate surface; and multiple through holes 224, which are provided around the liquid-side opening 222.

[0052] The liquid-side opening 222 is approximately rectangular, with its front-to-back dimension larger than its vertical dimension. Here, the liquid storage body 221 includes a bridging portion 225, which is formed at the center of the liquid-side opening 222 in the front-to-back direction and extends vertically. By forming this bridging portion 225, the liquid-side opening 222 is divided into a first liquid-side opening 226 and a second liquid-side opening 228.

[0053] The liquid storage body 221 has a liquid-side frame 227 on the other side in the width direction. The liquid-side frame 227 is a frame provided on the outer periphery of the liquid-side opening 222. The liquid-side frame 227 shown in the figure has a wide frame portion 237 and a narrow frame portion 238 provided on the upper part of the wide frame portion 237 in the vertical direction.

[0054] The wide frame portion 237 is a frame that surrounds the liquid-side opening 222. The wide frame portion 237 is roughly rectangular when viewed from above. The wide frame portion 237 has an upper opening 239 formed in the center of its upper width direction.

[0055] The narrow frame portion 238 is a frame that is configured to sandwich the upper opening 239 formed by the wide frame portion 237 in the middle and extends in the vertical direction. The front-to-back length of the narrow frame portion 238 is shorter than the front-to-back length of the wide frame portion 237, that is, the width of the narrow frame portion 238 is narrower than the width of the wide frame portion 237.

[0056] The liquid-side cover 223 is a plate-shaped member that is approximately rectangular when viewed from above. The liquid-side cover 223 includes a wide cover portion 234 and a narrow cover portion 236 located above the wide cover portion 234 in the vertical direction. The wide cover portion 234 is shaped to cover the wide frame portion 237 of the liquid-side frame 227. Furthermore, the narrow cover portion 236 is shaped to cover the narrow frame portion 238 of the liquid-side frame 227. By covering the liquid-side frame 227 with the liquid-side cover 223, a region for containing the working fluid in liquid phase, namely a liquid phase containing region 229, is formed. It should be noted that the liquid phase containing region 229 is an example of a liquid storage region.

[0057] The liquid phase containment area 229 opens upward through the liquid storage side opening 232. The liquid storage side opening 232 is opposite to the compensator side opening 216, so that the liquid phase containment area 229 is continuous with the interior of the compensator 210.

[0058] <Liquid absorbent container 170> Figure 5 This is an exploded perspective view of the liquid-absorbing core container 170.

[0059] Next, refer to Figure 5 The detailed structure of the liquid-absorbing core container 170 is explained below.

[0060] First, such as Figure 5As shown in (A), the absorbent core container 170 has a container body 271 and an absorbent core side cover 273 that covers the container body 271. The constituent components constituting the container body 271 and the absorbent core side cover 273 are fixed by known methods such as welding.

[0061] The main body 271 of the container is a plate-shaped member that is generally rectangular when viewed from above. The main body 271 of the container includes: a wick-side opening 272, which is a through hole located in the center of the plate surface; and multiple through holes 274 arranged around the wick-side opening 272. In the illustrated example, the wick-side opening 272 is a generally rectangular shape with a front-to-back dimension greater than its vertical dimension.

[0062] Here, an O-ring groove 279 is formed on the outer periphery of the liquid-absorbing core side opening 272 on the other side 278 of the container body 271 (see reference). Figure 5 (B)). The O-ring groove 279 is a groove that is approximately rectangular in plan view, surrounding the outer periphery of the suction core side opening 272. An O-ring S3 is disposed in the O-ring groove 279 (see below). Figure 7 O-ring S3 is a ring-shaped seal formed with a roughly circular cross-section. The material of O-ring S3 is not particularly limited, but it can be made of rubber, for example. Such rubber materials include, for example, silicone rubber, fluororubber, nitrile rubber, polyurethane rubber, butyl rubber, styrene-butadiene rubber, etc.

[0063] Furthermore, the outer periphery of the suction core side opening 272 on one side 282 of the container body 271 is provided with a suction core side frame 277. In addition, the container body 271 has a partition wall 281 inside the suction core side frame 277 and at a position lower than the suction core side opening 272.

[0064] The absorbent core side frame 277 is a frame that surrounds the absorbent core side opening 272. The absorbent core side frame 277 is generally rectangular when viewed from above. Details will be described later, but a space is formed inside the absorbent core side frame 277 to form the spacer 140 and the absorbent core 150.

[0065] The partition wall 281 is a component that separates the internal space of the wick-side frame 277. To further explain, the partition wall 281 divides this internal space into a wick-receiving region 288 located on the upper side of the interior of the wick-side frame 277 and a gas-phase guiding region 289 located on the lower side of the interior of the wick-side frame 277 (see reference). Figure 5 (B)). Here, the suction core receiving area 288 internally accommodates the spacer 140 and the suction core 150. Furthermore, the gas phase guiding area 289 serves as the flow path for the gas phase working fluid (see below). Figure 7 ).

[0066] In addition, such as Figure 5 As shown in (A), the liquid-absorbing core side frame 277 has a vapor guide portion 283 on the lower side of its central portion in the width direction. This vapor guide portion 283 is a portion that protrudes downwards in the vertical direction. Furthermore, an outlet 284 for connecting to the vapor pipe 107 is formed at the lower top of the vapor guide portion 283. The vapor guide portion 283 guides the working fluid in the gas phase flowing from the gas phase guiding region 289 to the vapor pipe 107 via the outlet 284. It should be noted that the dimensions of the vapor pipe 107 are not particularly limited, but its outer diameter is 12 mm and its inner diameter is 10 mm.

[0067] like Figure 5 As shown in (C), the absorbent core side cover 273 is a plate-shaped member that is approximately rectangular when viewed from above. The absorbent core side cover 273 has a guide cover portion 285 on the lower side of its central portion in the width direction. This guide cover portion 285 is a protrusion that protrudes downwards in the vertical direction. This guide cover portion 285 covers the vapor guide portion 283 formed on the absorbent core side frame 277.

[0068] Here, as Figure 5 As shown in (D), the absorbent core side cover 273 has a vapor guiding protrusion 287 formed on another side 286. This vapor guiding protrusion 287 is a protrusion extending in the vertical direction, and multiple protrusions are formed on the other side 286. The top tip 291 of the vapor guiding protrusion 287 in the protruding direction is flat. The top tip 291 of the vapor guiding protrusion 287 is pressed against the plate surface of the absorbent core 150, thereby forming a vapor groove (recess) 293. The vapor groove 293 is a space surrounded by adjacent vapor guiding protrusions 287, the other side 286, and the absorbent core 150. Furthermore, the vapor groove 293 guides the working fluid in the gas phase flowing from the absorbent core 150 to the vapor guiding section 283 via the gas phase guiding area 289.

[0069] It should be noted that the size of the vapor guiding protrusion 287 is not particularly limited, but may be, for example, the size described below. That is, as... Figure 5 As shown in (D), the width G1 is 0.1 mm to 5 mm, the height G2 is 0.1 mm to 5 mm, and the gap G3 is 0.1 mm to 5 mm. It should be noted that the thickness G5 of the absorbent core side cover 273 is 0.5 mm to 10 mm.

[0070] Furthermore, the dimensions of the absorbent core side frame 277, etc., are not particularly limited, but may be, for example, the dimensions described below. That is, as... Figure 5 (B) and Figure 5As shown in (C), the height H11 of the absorbent core side frame 277 is 14 mm, the height H13 of the spacer wall 281 is 13 mm, and the gap H15 between the absorbent core side frame 277 and the spacer wall 281 is 2 mm. Furthermore, the thickness of both the absorbent core side frame 277 and the spacer wall 281 is 2 mm, and the height H17 between the absorbent core side frame 277 and the spacer wall 281 separated by the gap H15 is 6 mm. Additionally, the distance H19 from the lower end of the absorbent core side cover 273 to the vapor guiding protrusion 287 is 6 mm.

[0071] <Container 130> Figure 6 This is a detailed structural diagram of the contained body 130.

[0072] Next, refer to Figure 6 The detailed structure of the contained body 130 will be explained.

[0073] The container 130 has a spacer 140 and a suction core 150 as described above. Hereinafter, the configuration of the spacer 140 and the suction core 150 will be described in turn.

[0074] (Spacer 140) First, refer to Figure 6 (A) describes spacer 140. Spacer 140 is a generally rectangular frame when viewed from above. The spacer 140 supports and overlaps the absorbent core 150. Further explanation is provided: spacer 140 presses against the outer periphery of the plate surface of spacer 140. Furthermore, spacer 140 has a spacer opening 312 extending through in the width direction. Additionally, spacer 140 has a bridging portion 315 formed at the center of the spacer opening 312 in the front-rear direction and extending in the vertical direction. By forming this bridging portion 315, the spacer opening 312 is divided into a first spacer opening 316 and a second spacer opening 318.

[0075] Here, the bridging portion 315 presses against the center portion of the suction core 150 in the front-to-back direction. In other words, the bridging portion 315 presses against the center portion of the suction core 150 in the longitudinal direction. Therefore, the spacer 140 more reliably seals the suction core 150. It should be noted that the opposite side of the suction core 150 in the bridging portion 315 is connected by the bridging portion 225 of the liquid storage portion 220 (see...). Figure 4 The spacer 140 provides support, thereby ensuring a more reliable seal between the spacer 140 and the absorbent core 150.

[0076] Furthermore, the bridging portion 315 is a support structure that internally supports the spacer 140. Therefore, even if a compressive force is applied to the spacer 140 in the vertical direction, the bridging portion 315 will suppress deformation of the spacer 140. To explain further, even if a force is applied to press the spacer 140 and the absorbent core 150 in the vertical direction, the bridging portion 315 will prevent damage to the absorbent core 150.

[0077] The spacer 140 has O-ring grooves 317 and 319 on one side 321 and the other side 323, respectively. The O-ring grooves 317 and 319 surround the outer periphery of the first spacer opening 316 and the second spacer opening 318. O-rings S1 and S2 (see below) are respectively disposed in the O-ring grooves 317 and 319. Figure 7 ).

[0078] The spacer 140 is formed, for example, from a fluoropolymer (resin) such as polytetrafluoroethylene (PTFE) or a metal. The spacer 140 is preferably formed from a material with low thermal conductivity. Further explanation is warranted, the spacer 140 is preferably formed from a material with a lower thermal conductivity than that of the liquid phase container 110 and the wick container 170.

[0079] (Absorbent core 150) Next, refer to Figure 6 (B) describes the absorbent core 150. The absorbent core 150 is a plate-shaped member that is approximately rectangular when viewed from above and elongated in the front-to-back direction. Although not particularly limited, the dimensions of the absorbent core 150 are as follows: front-to-back length is 30 mm to 900 mm, vertical length is 10 mm to 100 mm, and width length is 2 mm to 40 mm.

[0080] The material of the absorbent core 150 is not particularly limited, but it can be formed, for example, from a porous metal such as stainless steel or copper. The absorbent core 150 generates capillary force on the working fluid, resulting in fluid movement. The effective pore diameter of the absorbent core 150 is, for example, from 0.1 μm to 20 μm. Furthermore, the porosity of the absorbent core 150 is, for example, from 25% to 70%. It should be noted that the methods for determining the effective pore diameter and porosity are not particularly limited. For example, they can be determined by measuring apparent density using the water impregnation method, measuring pore diameter distribution using the mercury intrusion porosimetry method, or observing pores using X-ray CT (Computed Tomography).

[0081] In this embodiment, the absorbent core 150 is formed with different structures on the central side and the outer periphery of the plate surface. More specifically, the pore diameter differs in the approximately rectangular region 331 on the central side of the absorbent core 150 and in the rectangular outer periphery 335 surrounding the central portion 331. To further explain, the pore diameter in the central portion 331 is relatively large, while the pore diameter in the outer periphery 335 is relatively small. Furthermore, the particle size in the outer periphery 335 is smaller than that in the central portion 331.

[0082] Here, by reducing the pore diameter of the outer peripheral portion 335, the flow resistance of the outer peripheral portion 335 is relatively increased. Furthermore, by reducing the pore diameter of the outer peripheral portion 335, the strength of the outer peripheral portion 335 is relatively increased. To elaborate further, the breaking strength of the outer peripheral portion 335 is relatively increased. In addition, the toughness of the outer peripheral portion 335 is relatively increased. Furthermore, the rigidity of the outer peripheral portion 335 is relatively increased. Therefore, even under external impact, damage to the wicking core 150 is suppressed.

[0083] While not specifically limited, for example, the effective pore diameter of the outer peripheral portion 335 is 0 μm to 10 μm, and the effective pore diameter of the central portion 331 is 0.2 μm to 20 μm. Furthermore, the porosity of the outer peripheral portion 335 is 0% to 50%, and the porosity of the central portion 331 is 20% to 80%. It should be noted that the porosity of the outer peripheral portion 335 can also be 0%, i.e., it can be composed of a solid material.

[0084] (Configuration of spacer 140 and absorbent core 150) Next, refer to Figure 6 (C) The configuration of the spacer 140 and the suction core 150 will be described. First, the spacer 140 and the suction core 150 are arranged overlapping each other. Furthermore, the outer periphery of the suction core 150 is pressed down by the spacer 140, which serves as a frame. By pressing down on the outer periphery of the suction core 150 by the spacer 140, leakage of the working fluid in the liquid phase to the outside is suppressed. In addition, the spacer 140 has a bridging portion 315, which, in addition to pressing down on the outer periphery of the suction core 150, also presses down on the central portion of the plate surface. Therefore, even if the suction core 150 may warp, for example, deformation of the suction core 150 is suppressed by the bridging portion 315.

[0085] Here, the outer peripheral portion 335 of the absorbent core 150 is located in the area of ​​the absorbent core 150 that is pressed by the spacer 140. Compared with the central portion 331 of the absorbent core 150 that is not pressed by the spacer 140, the pore diameter of this outer peripheral portion 335 is relatively small and its strength is relatively high. Therefore, even if the outer peripheral portion 335 is subjected to a large force from the spacer 140 due to an external impact, damage to the absorbent core 150 will be suppressed.

[0086] Furthermore, the outer periphery 335 of the suction core 150 is opposite to the O-ring groove 317. The pore diameter of the outer periphery 335 that contacts the O-ring S1 disposed in the O-ring groove 317 is small, thereby increasing the contact area with the O-ring S1 and making the seal more reliable.

[0087] It should be noted that the spacer opening 312 of the spacer 140 is located at a position overlapping with the central portion 331 of the liquid-absorbing core 150. Furthermore, the first spacer opening 316 and the second spacer opening 318 of the spacer 140 are located at positions corresponding to the first liquid-side opening 226 and the second liquid-side opening 228 of the liquid storage portion 220 (see reference). Figure 4 The overlapping positions. As a result, the flow of the working fluid in the liquid phase from the reservoir 220 toward the suction core 150 is hindered by the spacer 140.

[0088] It should be noted that the outer periphery of the suction core 150 can be understood as the area within the plate surface of the suction core 150 that is a specified width (e.g., 3 mm to 30 mm) from the outer edge. Furthermore, the outer periphery of the suction core 150 can be understood as the area surrounding the region through which the working fluid of the supply liquid phase passes.

[0089] <Operation of Evaporator 101> Figure 7 yes Figure 2 A schematic diagram of the cross section on plane VII-VII.

[0090] Next, refer to Figure 1 and Figure 7 The operation of evaporator 101 will be explained.

[0091] like Figure 7 As shown, the liquid working fluid flowing into the compensator 210 from the liquid pipe 109 flows into the liquid phase receiving area 229 of the liquid storage section 220 (arrow A11). Then, the liquid working fluid passes through the spacer opening 312 of the spacer 140 and permeates the suction core 150 (see arrow A12). Then, the liquid working fluid moves within the suction core 150 by the capillary force of the suction core 150, and is simultaneously heated and vaporized by the heat of the heating element 50. The vaporized working fluid flows along the vapor tank 293 (arrow A13). Then, the vaporized working fluid passes through the vapor guide area 289 and flows out from the outlet 284 (see arrow A17). The outflowing vaporized working fluid is sent to the vapor pipe 107.

[0092] On the other hand, from the steam pipe 107 to the condenser 105 (refer to...) Figure 1The working fluid, liquefied by the flow through the condenser 105, flows into the evaporator 101 via the liquid pipe 109. The working fluid flowing into the evaporator 101 passes through the compensator 210 and re-permeates the wick 150. In this way, the flow of the working fluid in the wick 150 is uninterrupted, and the above cycle is repeated. Then, the heat generated by the heating element 50 is transferred from the evaporator 101 to the condenser 105.

[0093] <Configuration of Evaporator 101> Figure 8 This diagram illustrates the configuration of the evaporator 101. Specifically, Figure 8 (A) is a schematic diagram of the evaporator 101 as viewed from the front side in the front-rear direction. Furthermore, Figure 8 (B) is a schematic diagram of the evaporator 101 as viewed from one side in the width direction.

[0094] Next, refer to Figure 7 and Figure 8 The configuration of evaporator 101 will be described.

[0095] First, such as Figure 8 As shown in (A), in the evaporator 101, the compensator 210 and the evaporator body 310 are arranged in a vertically oriented manner. To further explain, in the evaporator 101, the compensator 210 is located on the upper side of the evaporator body 310, which is formed as a flat plate. By adopting the vertically oriented arrangement of the compensator 210 and the evaporator body 310, the horizontal dimension of the evaporator 101 is suppressed.

[0096] Furthermore, by arranging the plate surface of the generally flat evaporator body 310 in a vertical direction (i.e., longitudinally), the horizontal dimension is reduced. Moreover, by arranging the evaporator body 310 longitudinally, the bottom area of ​​the liquid phase containment region 229 formed inside the evaporator body 310 is suppressed. By reducing the bottom area of ​​the liquid phase containment region 229, even when the volume of the working liquid is small, the height (depth) of the working liquid contained within the liquid phase containment region 229 is ensured. Therefore, even when the volume of the working liquid is small, the liquid level of the working liquid is prevented from being lower than the wick 150, thus preventing a decrease in thermal efficiency. Furthermore, in the illustrated example, the longitudinal length of the evaporator body 310 is relatively long. Therefore, the evaporator body 310 can be cooled by the air flowing longitudinally around its periphery as the vehicle 1 moves.

[0097] Furthermore, because the plate surface of the wick 150 is configured along the vertical direction, even if bubbles are generated by the evaporation of the working fluid on the surface of the wick 150 within the liquid phase containment region 229, the bubbles will flow upwards (rise) along the plate surface of the wick 150. That is, the vertical configuration of the wick 150 promotes bubble separation from the surface of the wick 150. This suppresses the reduction in thermal efficiency due to bubbles adhering to the surface of the wick 150.

[0098] In addition, Figure 8 In the example shown in (A), the distance from the heating element 50 to the compensator 210 is relatively large. To elaborate further, the compensator 210 is positioned horizontally offset from the upper side of the heating element 50. Specifically, the heating element 50 and the compensator 210 are positioned offset in the width direction (offset configuration, see distance D1 in the diagram). Furthermore, the curvature of the outer peripheral surface of the compensator 210 promotes airflow along its outer peripheral surface. This, in turn, prevents the accumulation of air heated by the heating element 50 around the compensator 210. Consequently, the temperature of the compensator 210 is prevented from rising due to the heat generated in the heating element 50. It should be noted that even if the compensator 210 is positioned directly above the heating element 50, unlike the illustrated example, the curvature of the outer peripheral surface of the compensator 210 also prevents the accumulation of air heated by the heating element 50 around the compensator 210.

[0099] In addition, such as Figure 8 As shown in (A), the compensator 210 protrudes to the opposite side of the evaporator body 310 in the width direction, i.e., the liquid-side cover 223 (see distance D5 in the diagram). Because the compensator 210 protrudes to the opposite side of the heating element 50, it is cooled by air. For example, the compensator 210 is cooled by airflow from the lower side to the upper side in the vertical direction.

[0100] In addition, such as Figure 8 As shown in (B), the front-to-back length L4 of the heating element 50 is longer than the length L3 of the compensator 210. This will suppress the compensator 210 from being heated by the heating element 50.

[0101] Furthermore, the horizontal length L1 of the evaporator body 310 is longer than the length L3 of the compensator 210. Also, the horizontal length L5 of the liquid phase containment region 229 formed inside the evaporator body 310 is longer than the length L3 of the compensator 210. Furthermore, the horizontal length L5 of the liquid phase containment region 229 is longer than its vertical length L7. This reduces the width dimension of the liquid phase containment region 229, i.e., the thickness of the evaporator body 310, and ensures sufficient volume for the working fluid containing the liquid phase.

[0102] It should be noted that the dimensions of the constituent components of the evaporator 101 are not particularly limited, but may be, for example, the dimensions described below. That is, as... Figure 7 As shown, the height H1 of the evaporator 101 is 50 mm to 500 mm, and the height H2 of the evaporator body 310 is 20 mm to 300 mm. Furthermore, the width W1 of the evaporator body 310 is 10 mm to 100 mm, the width W2 of the liquid-absorbing core container 170 is 5 mm to 50 mm, and the outer diameter W3 of the compensator 210 is 20 mm to 200 mm.

[0103] In addition, such as Figure 8 As shown in (B), the length L1 of the evaporator 101 (evaporator body 310) is 50 mm to 1000 mm, the length L3 of the compensator 210 is 30 mm to 800 mm, the length L4 of the heating element 50 is 40 mm to 900 mm, and the length L5 of the liquid phase containment area 229 is 50 mm to 1000 mm.

[0104] Furthermore, although the description has been omitted above, the heating element 50 in the illustrated example is configured as a plurality of semiconductor elements 501, which are SiC semiconductors, arranged in two columns. It should be noted that the shape of the semiconductor elements 501 in the illustrated example is schematic and not particularly limited. Furthermore, the number of semiconductor elements 501 constituting the heating element 50 is not particularly limited.

[0105] <Variation Example> Hereinafter, a modified example of the evaporator 101 will be described. It should be noted that in the following description, parts that are the same as those in the above-described embodiments will sometimes be labeled with the same reference numerals, and their detailed descriptions will be omitted.

[0106] (A modified example of the liquid suction core 150) In the above description, the case where the wick 150 is a porous metal material was explained, but it is not limited to this. That is, the wick 150 can be made of any material with many pores or voids formed inside. The wick 150 is formed, for example, from a porous material made of resin such as polytetrafluoroethylene (PTFE), a porous ceramic material, a porous glass material, or a porous fiber. It should be noted that if a material with low thermal conductivity is used as the wick 150, heat leakage in the evaporator 101 can be reduced. Furthermore, if it is desired to further reduce heat leakage, it is generally preferable to use a non-metallic material with a lower thermal conductivity than that of metal.

[0107] The method for forming the liquid absorber 150 is not particularly limited. For example, the liquid absorber 150 can also be formed by sintering metal powder (powder) such as copper into a predetermined shape. Alternatively, the liquid absorber 150 can be formed by sintering a metal paste including metal powder into a predetermined shape. Furthermore, the liquid absorber 150 can also be formed by etching a plate-like component to create numerous fine holes. Additionally, the liquid absorber 150 can also be formed using a lamination forming device, such as a 3D printer.

[0108] Figure 9 This is a diagram illustrating the first variation.

[0109] In the above description, the case where the pore diameter is different at the central portion 331 and the outer peripheral portion 335 of the wick 150 was explained. Here, although there is no particular limitation in forming the wick 150 by arranging metal powder into a predetermined shape and sintering it, the wick 150 can also be formed by, for example, the process described below.

[0110] like Figure 9 As shown in (A-1), metal powders with different particle sizes can also be used at the central portion 1331 and the outer peripheral portion 1335. Specifically, materials that are different from each other are configured into a predetermined shape to serve as the central portion 1331 and the outer peripheral portion 1335. Furthermore, as... Figure 9 As shown in (A-2), a liquid-absorbing core 1150 with different pore diameters at the central portion 1331 and the outer peripheral portion 1335 can also be formed by performing a sintering process.

[0111] In addition, such as Figure 9 As shown in (B-1), the same metal powder can also be used in the central portion 2331 and the outer peripheral portion 2335. Furthermore, different pore diameters can be achieved by performing different treatments on the central portion 2331 and the outer peripheral portion 2335.

[0112] For example, such as Figure 9 As shown in (B-1), the same material is arranged at different thicknesses at the central portion 2331 and the outer peripheral portion 2335. In the illustrated example, the metal powder in the outer peripheral portion 2335 is formed to be thicker than the metal powder in the central portion 2331. Furthermore, by pressing (referring to pressure F1) only on the outer peripheral portion 2335, it is compressed so that the thickness of the central portion 2331 is the same as the thickness of the outer peripheral portion 2335. And, as... Figure 9 As shown in (B-2), a liquid-absorbing core 2150 with uniform thickness and smaller pore diameter on the outer periphery 2335 is formed by performing a sintering process.

[0113] In addition, such as Figure 9As shown in (C-1), the same metal powder can also be used and configured with the same thickness. Furthermore, by pressing (referring to pressure F2) only on the outer periphery to compress it, the thickness of the outer periphery 3335 is made thinner than the thickness of the central portion 3331. And, as... Figure 9 As shown in (C-2), a liquid-absorbing core 3150 is formed by performing a sintering process, resulting in a relatively thin outer peripheral portion 3335 and a smaller pore diameter in the outer peripheral portion 3335.

[0114] It should be noted that, in the above... Figure 9 (B) and Figure 9 The description of (C) describes the case where only the outer peripheral portion 3335 is pressed, but it is not limited to this. For example, it is also possible to press both the central portion 2331 and the outer peripheral portion 2335. To explain further, it is also possible to press the outer peripheral portion 3335 with a higher pressure than that of the central portion 2331.

[0115] Furthermore, in the above Figure 9 (B) and Figure 9 In the description of (C), the case of forming the liquid absorber 2150, etc., by arranging metal powder into a predetermined shape, pressing a portion of it, and then sintering it is described, but it is not limited to this. For example, it is also possible to arrange metal powder into a predetermined shape, sinter it, and then press a portion of it. If further explained, it is as follows: Figure 9 As shown in (B-1), the thickness of the central portion 2331 can also be made consistent with the thickness of the outer portion 2335 by configuring the same material at different thicknesses at the central portion 2331 and the outer peripheral portion 2335, and then subjecting it to compression treatment after sintering. Furthermore, as... Figure 9 As shown in (C-1), the same material can also be configured with the same thickness and sintered, so that the thickness of the outer peripheral portion 3335 is thinner than the thickness of the central portion 3331. It should be noted that the process of pressing a portion of the sintered metal powder can be understood as a process of increasing the strength (rigidity) of a portion of the porous body.

[0116] Furthermore, the above description explained how varying the pore diameter at the central portion 2331 and the outer peripheral portion 2335 can result in different toughness, but this is not a limitation. For example, different toughness can also be achieved by switching the material at the central portion 2331 and the outer peripheral portion 2335. Additionally, for example, different toughness can also be achieved by switching the forming process at the central portion 2331 and the outer peripheral portion 2335, such as applying heat treatment only to the outer peripheral portion 2335.

[0117] Figure 10 This is a diagram illustrating the second variation.

[0118] In the above description, the case where the pore diameter differs at the central portion 331 of the absorbent core 150 and at the outer peripheral portion 335 surrounding the central portion 331 has been explained, but the configuration of the absorbent core 150 is not limited to this. For example, as Figure 10 As shown in (A), the entire absorbent core 4150 may be formed of a common material (e.g., pore diameters of a common size).

[0119] In addition, such as Figure 10 As shown in (B), in a configuration where the absorbent core 5150 has a central portion 5331 and an outer peripheral portion 5335, a bridging portion 5333 can be provided at the central portion in the front-to-back direction. This bridging portion 5333 is formed of the same material as the outer peripheral portion 5335. That is, the bridging portion 5333 is formed of a different material than the central portion 5331. This bridging portion 5333 is disposed at the bridging portion 315 of the spacer 140 (see reference). Figure 6 (B) The pressing position. Furthermore, the pore diameter of the bridging part 5333 is relatively small, which will inhibit damage to the liquid suction core 5150.

[0120] In addition, such as Figure 10 As shown in (C), in the configuration of the absorbent core 6150 having a central portion 6331 and an outer peripheral portion 6335, intersecting bridging portions 6333 and bridging portions 6334 can also be provided. These bridging portions 6333 and bridging portions 6334 are formed with relatively small pore diameters, as in the case of bridging portion 5333 described above, thereby suppressing damage to the absorbent core 6150.

[0121] Furthermore, the above description describes the case where a vapor guiding protrusion 287 extending in the vertical direction is formed on the suction core side cover 273 of the suction core container 170, but it is not limited to this. It is sufficient to form a flow path for the working fluid in the gas phase in the area where the suction core side cover 273 and the suction core 150 contact. For example, instead of the vapor guiding protrusion 287 of the suction core side cover 273, or together with the vapor guiding protrusion 287 of the suction core side cover 273, a protrusion or groove extending in the vertical direction may be formed on the surface of the suction core 150 opposite to the suction core side cover 273.

[0122] Furthermore, in the above description, the O-ring groove 317 (refer to) for arranging the O-ring S1 is described. Figure 6 The case where (A) is provided in the spacer 140 has been described, but it is not limited thereto. For example, the suction core 150 may also be configured to have an O-ring groove 317.

[0123] (A variation of spacer 140) Figure 11 This is a diagram illustrating the third variation.

[0124] The above description describes the configuration of the spacer 140 having the bridging portion 315, but it is not limited to this. For example, as Figure 11 As shown in (A-1), the spacer 1140 may also be configured without the bridging portion 315. It should be noted that in the spacer 1140 shown in the figure, an O-ring groove 1317 is provided along the outer periphery of the spacer 1140.

[0125] In addition, such as Figure 11 As shown in (A-2), the spacer 2140 may also have intersecting bridging portions 2315 and 2316. This spacer 2140 is configured to have four spacer through holes 2312. It should be noted that the spacer 2140 shown in the figure has O-ring grooves 2317 along its outer periphery. Further explanation is possible, but instead of the illustrated example, multiple (four) O-ring grooves 2317 may be provided at positions surrounding the spacer through holes 2312.

[0126] In addition, such as Figure 11 As shown in (B), the spacer 2140 may also be configured to have a conical surface 3313. This conical surface 3313 is formed in the region opposite to the spacer through hole 2312. Furthermore, the conical surface 3313 is inclined in the direction of being upward in the vertical direction as it moves to the other side in the width direction. By forming this conical surface 3313, even if the working fluid evaporates on the surface 159 of the wick 150 opposite to the spacer through hole 2312 and generates bubbles, the bubbles will be guided by the upper conical surface 3313, thereby discharging the bubbles from the spacer through hole 2312 (refer to arrow D1). This suppresses the retention of bubbles generated on the surface 159 of the wick 150 on the upper side of the spacer through hole 2312, thus reducing the heat exchange rate of the wick 150.

[0127] It should be noted that although the illustration is omitted, if the liquid phase container 110 and the liquid suction core container 170 support the liquid suction core 150, which is different from the above embodiment, then the spacer 140 may not be provided.

[0128] (Other variations) In the above description, the case where the liquid phase container 110 is cylindrical has been described, but it is not limited to this. For example, the shape of the liquid phase container 110 can also be other shapes such as cuboid or cube. Furthermore, as long as the configuration can stably supply the working fluid of liquid phase to the wick 150, the configuration can also be without the liquid phase container 110.

[0129] Furthermore, in the above description, the case where the central axis of the liquid phase container 110 and the plate surface of the suction core 150 are along the front-to-back direction has been described, but it is not limited to this. For example, the central axis of the liquid phase container 110 and the plate surface of the suction core 150 may be configured to be orthogonal to each other.

[0130] Furthermore, the above description describes the case where the condenser 105 is equipped with heat sink 701. Here, cooling using heat sink 701 can be either natural cooling or forced cooling. To elaborate further, the condenser 105 may also be equipped with a fan, and the heat sink 701 may be cooled by airflow generated by the fan.

[0131] Furthermore, the above description describes the case where the absorbent core 150 is plate-shaped and the spacer 140 presses against the outer periphery of the absorbent core 150. Here, the spacer 140 is not limited to any configuration where it presses against the side of the absorbent core 150 within the space containing the working fluid of the liquid phase. For example, the spacer 140 may press against multiple portions of the outer periphery of the side of the absorbent core 150 that are separated from each other. Alternatively, the spacer 140 may press against one or more portions of the side of the absorbent core 150 that include the center of the plate surface. Furthermore, the spacer 140 may press against the central side of the absorbent core 150 in the longitudinal direction. Moreover, the shape of the absorbent core 150 is not limited to a plate shape. For example, it may be a block-shaped (cubic parallelepiped) shape with a large thickness dimension, or it may be a cylindrical, spherical, or other shapes.

[0132] The above description illustrates the case where the loop-type heat pipe 10 cools the heat-generating element 50, which is a semiconductor, located in the automobile 1, but it is not limited to this. For example, the loop-type heat pipe 10 can also be installed in mobile bodies other than automobiles. Further explanation reveals that the loop-type heat pipe 10 can also be installed in ships, railways, motorcycles, bicycles, drones, etc. Furthermore, the loop-type heat pipe 10 can also be installed in devices other than mobile bodies, such as computer devices like servers and personal computers, or batteries like household solar cells and fuel cells.

[0133] Furthermore, the technology disclosed in this specification is, as described above, a heat exchanger having an evaporator. The evaporator is equipped with an evaporator body that absorbs heat from the outside and causes a liquid working fluid to move through capillary force while evaporating into a gaseous phase. The heat exchanger causes the gaseous working fluid exiting the evaporator to condense and return to the evaporator as a liquid working fluid. The interior of the evaporator is separated by the evaporator body, and the evaporator has: a liquid phase containment chamber located on one side when viewed from the evaporator body, containing the liquid working fluid; and a gas phase containment chamber located on the opposite side of the liquid phase containment chamber across the evaporator body, containing the gaseous working fluid. The evaporator is equipped with a pressing body located on the liquid phase containment chamber side when viewed from the evaporator body, pressing the side of the evaporator body on the liquid phase containment chamber side. The evaporator body has a pressed portion, which is the portion pressed by the pressing body and has higher toughness than the portion not pressed by the pressing body.

[0134] Here, the evaporator may be flat, and the pressing body may press against the outer periphery of the evaporator's flat surface.

[0135] Alternatively, the plate surface of the evaporator may be longer in one direction, and the pressing body may have: an outer peripheral frame portion that presses the outer periphery of the evaporator; and a central pressing portion that extends in a direction intersecting the one direction, connects the central side of the outer peripheral frame portion in the one direction, and presses the plate surface of the evaporator.

[0136] Alternatively, the evaporator may have a liquid phase containment body that forms the liquid phase containment chamber inside, and the liquid phase containment body has a support portion that supports the central pressing portion of the pressing body.

[0137] Alternatively, the pressing body may have multiple openings through the central pressing portion for the working fluid of the liquid phase to flow internally toward the evaporator, and multiple seals may be provided on the plate surface of the evaporator at positions surrounding each of the openings.

[0138] Alternatively, the pressing body may have an opening for the liquid phase working fluid to flow internally toward the evaporator, and a seal may be provided on the side of the evaporator at a position surrounding the opening.

[0139] Alternatively, the evaporator may have a liquid phase container forming the liquid phase containment chamber inside, preferably with the thermal conductivity of the pressing body being lower than that of the liquid phase container.

[0140] Alternatively, the pressing body may have an opening for the liquid phase working fluid to flow internally toward the evaporator, and have an inclined surface that is an upper side of the opening opposite to the opening, and that slopes upwards as it separates from the side of the evaporator.

[0141] Alternatively, the pore diameter of the pressed portion in the evaporator may be smaller than the pore diameter of the portion not pressed by the pressing body.

[0142] From another perspective, the technology disclosed in this specification is a heat exchanger having an evaporator. The evaporator includes an evaporator body that absorbs heat from the outside and causes a liquid working fluid to move through capillary force while evaporating into a gaseous phase. The heat exchanger causes the gaseous working fluid exiting the evaporator to condense and return as a liquid working fluid to the evaporator. The interior of the evaporator is separated by the evaporator body, and the evaporator has: a liquid phase chamber located on one side when viewed from the evaporator body, containing the liquid working fluid; and a gas phase chamber located on the opposite side of the liquid phase chamber, across the evaporator body, containing the gaseous working fluid. The evaporator includes a pressing body located on the liquid phase chamber side when viewed from the evaporator body, pressing the side of the evaporator on the liquid phase chamber side. The evaporator body has a high-strength portion, which is the portion pressed by the pressing body and has a higher strength than the portion not pressed by the pressing body.

[0143] From another perspective, the technology disclosed in this specification is a heat exchanger with an evaporator having a flat evaporating body. The evaporating body absorbs heat from the outside and evaporates a liquid working fluid into a gaseous phase while moving it through capillary force. The heat exchanger condenses the gaseous working fluid exiting the evaporator and returns it to the evaporator as a liquid working fluid. The interior of the evaporator is separated by the flat evaporating body, and the evaporator has: a liquid phase chamber located on one side when viewed from the evaporating body, containing the liquid working fluid; and a gas phase chamber located across the evaporating body. On the opposite side of the liquid phase containment chamber, a working fluid in the gas phase is contained. The evaporator includes a pressing body, which is located on the liquid phase containment chamber side when viewed from the evaporator. The pressing body presses the outer periphery of the plate surface on the liquid phase containment chamber side of the evaporator. The plate surface of the evaporator is elongated in the horizontal direction. The pore diameter of the outer periphery of the plate surface in the evaporator is smaller than the pore diameter of the central side of the plate surface. The pressing body has: an outer peripheral frame portion that presses the outer periphery of the evaporator; and a central pressing portion that extends in the vertical direction, connects the horizontal central side of the outer peripheral frame portion, and presses the plate surface of the evaporator.

[0144] From another perspective, the technology disclosed in this specification is an evaporator comprising an evaporator body that absorbs heat from the outside and evaporates a liquid working fluid into a gaseous phase while moving it through capillary force. The evaporator allows the gaseous working fluid evaporated through the evaporator body to flow out, and allows the outflowing gaseous working fluid to condense and return. The interior of the evaporator is separated by the evaporator body, and the evaporator has: a liquid phase containment chamber disposed on one side when viewed from the evaporator body, containing the liquid working fluid; and a gas phase containment chamber disposed on the opposite side of the liquid phase containment chamber, separated from the evaporator body, containing the gaseous working fluid. The evaporator includes a pressing body disposed on the liquid phase containment chamber side when viewed from the evaporator body, pressing the side of the evaporator body on the liquid phase containment chamber side. The evaporator body has a pressed portion, which is the portion pressed by the pressing body and has higher toughness than the portion not pressed by the pressing body.

[0145] From another perspective, the technology disclosed in this specification is a device having a heating element and a heat exchanger, the heat exchanger having an evaporator that absorbs heat from the heating element and causes a liquid working fluid to move by capillary force while evaporating into a gaseous phase, the heat exchanger causing the gaseous working fluid exiting the evaporator to condense and return as a liquid working fluid to the evaporator, wherein the interior of the evaporator is separated by the evaporating element, and the evaporator has: a liquid phase containment chamber disposed on one side when viewed from the evaporating element, containing the liquid working fluid; and a gas phase containment chamber disposed on the opposite side of the liquid phase containment chamber across the evaporating element, containing the gaseous working fluid, the evaporator having a pressing body disposed on the liquid phase containment chamber side when viewed from the evaporating element, pressing the side of the evaporating element on the liquid phase containment chamber side, the evaporating element having a pressed portion, the pressed portion being the portion pressed by the pressing body, and having higher toughness than the portion not pressed by the pressing body.

[0146] If understood from another perspective, the technology disclosed in this specification is a mobile body comprising: a drive source; a heating element, controlling the drive source; and a heat exchanger having an evaporator, the evaporator having an evaporating body that absorbs heat from the heating element and causes a liquid working fluid to move by capillary force while evaporating into a gaseous phase, the heat exchanger causing the gaseous working fluid exiting the evaporator to condense and return as a liquid working fluid to the evaporator, the mobile body being driven by the drive source to move, wherein the interior of the evaporator is separated by the evaporating body, and the evaporator has: a liquid phase containment chamber, located on one side when viewed from the evaporating body, containing the liquid working fluid; and so on. The evaporator includes a gas phase containment chamber located opposite the liquid phase containment chamber, separated by the evaporator, to contain the working fluid in the gas phase. The evaporator also includes a pressing body located on the liquid phase containment chamber side when viewed from the evaporator, pressing the side of the evaporator on the liquid phase containment chamber side. The evaporator has a pressed portion, which is the part pressed by the pressing body and has higher toughness than the part not pressed by the pressing body. The evaporator has a shell, the interior of which is separated by the evaporator. The shell contains the liquid phase containment chamber and the gas phase containment chamber. The longitudinal direction of the shell is horizontal, and the shell is arranged along the travel direction of the moving body.

[0147] Furthermore, in recent years, the development of electric vehicles has been promoted as part of environmental protection measures. With the development of electric vehicles, the performance of semiconductors that control the motors of these vehicles has improved. However, this improved semiconductor performance has led to an increase in the heat generated by the semiconductors, thus requiring a heat exchanger or similar device that efficiently removes the heat flux from the semiconductors. On the other hand, the interior space of a car body is limited, so it is ideal to minimize the size of the heat exchanger or similar device used to cool the semiconductors.

[0148] Therefore, the technology disclosed in this specification can also be understood for the purpose of manufacturing heat exchangers that suppress size.

[0149] For this purpose, the technology disclosed in this specification can be understood as follows: The technology disclosed in this specification is a heat exchanger having an evaporator with a plate-shaped evaporating body. The evaporating body absorbs heat from the outside and evaporates a liquid working fluid into a gaseous phase while moving it through capillary force. The heat exchanger condenses the gaseous working fluid exiting the evaporator and returns it to the evaporator as a liquid working fluid. The evaporator includes: a liquid storage container for storing the liquid working fluid; a liquid phase container disposed below the liquid storage container in the vertical direction to contain the liquid working fluid flowing down from the liquid storage container; the evaporating body, with its plates arranged in a vertical orientation, which evaporates the liquid working fluid contained in the liquid phase container; and a gas phase container disposed opposite the liquid phase container across the evaporating body to contain the gaseous working fluid.

[0150] Hereinafter, according to claim 1, the heat exchanger is provided, wherein the liquid phase containment body has a liquid phase containment chamber for containing the working fluid of the liquid phase, the liquid phase containment chamber being longer in the horizontal direction than in the vertical direction.

[0151] Alternatively, the liquid phase containment chamber may have a first part located below the stored liquid and a second part located below the first part, wherein the first part is shorter in the horizontal direction than the second part.

[0152] Alternatively, the dimension of the liquid storage in the horizontal direction may be shorter than the dimension of the second part in the horizontal direction.

[0153] Alternatively, the heat exchanger may include a pressing body positioned on the liquid phase containment chamber side when viewed from the evaporator, pressing the outer periphery of the plate surface on the liquid phase containment chamber side of the evaporator.

[0154] Alternatively, the plate surface of the evaporator may be longer in one direction, and the pressing body may have: an outer peripheral frame portion that presses the outer periphery of the evaporator; and a central pressing portion that extends in a direction intersecting the one direction, connects the central side of the outer peripheral frame portion in the one direction, and presses the plate surface of the evaporator.

[0155] Alternatively, the gas phase container may have a heated surface for an external heating element to be disposed on and to receive heat from the heating element, and the liquid storage may be disposed at a position higher than the heating element in the vertical direction and offset from the heating element in the horizontal direction.

[0156] Alternatively, the liquid reservoir may protrude horizontally from the side opposite to the heating element of the liquid phase container.

[0157] Alternatively, the liquid storage container may be a cylindrical shape that extends axially in the horizontal direction.

[0158] Alternatively, the liquid phase container and the gas phase container may form a flat shell with the plate surface along the vertical direction.

[0159] From another perspective, the technology disclosed in this specification is a heat exchanger with an evaporator. The evaporator has a flat evaporating body that absorbs heat from the outside and evaporates a liquid working fluid into a gaseous phase while moving it through capillary force. The heat exchanger condenses the gaseous working fluid exiting the evaporator and returns it to the evaporator as a liquid working fluid. The evaporator includes: a liquid storage tank, which is a cylindrical shape extending axially in the horizontal direction, for storing the liquid working fluid; and a liquid container disposed below the liquid storage tank in the vertical direction. The liquid phase container contains a working fluid in the liquid phase flowing down from the storage liquid; an evaporator, the plates of which are arranged in an orientation along the vertical direction, the evaporator causing the working fluid in the liquid phase container to evaporate; and a gas phase container, disposed on the opposite side of the liquid phase container across the evaporator, containing the working fluid in the gas phase, the liquid phase container and the gas phase container forming a flat shell with plates in the vertical direction, the liquid phase container having a liquid phase chamber for containing the working fluid in the liquid phase, the liquid phase chamber being longer than the storage liquid in the horizontal direction.

[0160] From another perspective, the technology disclosed in this specification is an evaporator having a flat evaporating body that absorbs heat from the outside and evaporates a liquid working fluid into a gaseous phase while moving it through capillary force. The evaporator allows the gaseous working fluid evaporated by the evaporating body to flow out and allows the outflowing gaseous working fluid to be condensed and returned. The evaporator includes: a liquid storage tank for storing the liquid working fluid; a liquid phase container disposed below the liquid storage tank in the vertical direction for containing the liquid working fluid flowing down from the liquid storage tank; the evaporating body, the plate surface of which is arranged in the vertical direction for evaporating the liquid working fluid contained in the liquid phase container; and a gas phase container disposed opposite the liquid phase container across the evaporating body for containing the gaseous working fluid.

[0161] From another perspective, the technology disclosed in this specification is a device having a heating element and a heat exchanger, the heat exchanger having an evaporator with a plate-shaped evaporating body, the evaporating body absorbing heat from the heating element and evaporating a liquid working fluid into a gaseous phase while moving it through capillary force, the heat exchanger condensing the gaseous working fluid exiting the evaporator back into the evaporator as a liquid working fluid, wherein the evaporator comprises: a liquid storage container for storing the liquid working fluid; a liquid phase container disposed below the liquid storage container in the vertical direction for containing the liquid working fluid flowing down from the liquid storage container; the evaporating body with its plate surface arranged in the vertical direction for evaporating the liquid working fluid contained in the liquid phase container; and a gas phase container disposed opposite the liquid phase container across the evaporating body for containing the gaseous working fluid.

[0162] From another perspective, the technology disclosed in this specification is a mobile body comprising: a drive source; a heating element, controlling the drive source; and a heat exchanger having an evaporator, the evaporator having a flat evaporating element, the evaporating element absorbing heat from the heating element and evaporating a liquid working fluid into a gaseous phase while moving it through capillary force, the heat exchanger condensing the gaseous working fluid exiting the evaporator and returning it to the evaporator as a liquid working fluid, the mobile body moving under the drive source, wherein the evaporator includes: a liquid storage cylinder extending axially in the horizontal direction. The device comprises: a liquid container for storing working fluid; a liquid container disposed on the lower side of the liquid container in the vertical direction to hold the working fluid flowing down from the liquid container; an evaporator with its plate surface arranged in the vertical direction to evaporate the working fluid contained in the liquid container; and a gas container disposed on the opposite side of the liquid container across the evaporator to hold the working fluid in the gas phase. The liquid container and the gas container together form a flat shell with its plate surface in the vertical direction. The axial direction of the liquid container and the plate surface of the shell are arranged along the direction of travel of the moving body.

[0163] Furthermore, various implementation methods and modifications have been described above, and these implementation methods and modifications can also be combined with each other to form a configuration.

[0164] Furthermore, this disclosure is not limited to any of the above-described embodiments and may be implemented in various ways without departing from the spirit of this disclosure.

[0165] The loop-type heat pipe 10 is an example of a heat exchanger. The automobile 1 is an example of a device and moving body. The wick 150 is an example of an evaporator. The liquid phase containment area 229 is an example of a liquid phase containment chamber. The gas phase guiding area 289 is an example of a gas phase containment chamber. The spacer 140 is an example of a pressing body and an outer peripheral frame. The outer peripheral portion 335 is an example of a pressed portion and a high-strength portion. The bridging portion 315 is an example of a central pressing portion. The liquid storage portion 220 is an example of a liquid phase containment. The bridging portion 225 is an example of a support portion. The conical surface 3313 is an example of an inclined surface. The motor 30 is an example of a drive source. The compensator 210 is an example of a liquid storage unit. The narrow frame portion 238 is an example of a first portion. The wide frame portion 237 is an example of a second portion.

[0166] Explanation of reference numerals in the attached figures 1: Automobile; 50: Heating element; 10: Loop heat pipe; 101: Evaporator; 110: Liquid phase container; 130: Container; 140: Spacer; 150: Liquid wick.

Claims

1. A heat exchanger comprising an evaporator, said evaporator having an evaporator body that absorbs heat from the outside and evaporates a liquid working fluid into a gaseous phase while moving it by capillary force, said heat exchanger causing the gaseous working fluid exiting the evaporator to condense and return to the evaporator as a liquid working fluid, wherein... The interior of the evaporator is separated by the evaporating body, and the evaporator has a liquid phase containment chamber located on one side when viewed from the evaporating body, which contains the working fluid in liquid phase; And a gas phase containment chamber, located on the opposite side of the liquid phase containment chamber across the evaporator, to contain the gaseous working fluid. The evaporator includes a pressing body, which, when viewed from the evaporator, is positioned on the side of the liquid phase containing chamber to press against the side of the evaporator on the liquid phase containing chamber side. The evaporator has a pressed portion, which is the part pressed by the pressing body, and has higher toughness than the part not pressed by the pressing body.

2. The heat exchanger according to claim 1, wherein, The evaporator is plate-shaped. The pressing body presses against the outer periphery of the plate surface of the evaporator.

3. The heat exchanger according to claim 2, wherein, The plate surface of the evaporator is longer in one direction. The pressing body has: an outer peripheral frame portion that presses the outer periphery of the evaporator; and a central pressing portion that extends in a direction intersecting the first direction, connects the central side of the outer peripheral frame portion in the first direction, and presses the plate surface of the evaporator.

4. The heat exchanger according to claim 3, wherein, The evaporator has a liquid phase containment that forms the liquid phase containment chamber inside. The liquid phase container has a support portion that supports the central pressing portion of the pressing body.

5. The heat exchanger according to claim 3 or 4, wherein, The pressing body has multiple openings through the central pressing part, through which the working fluid of the liquid phase flows toward the evaporator, and multiple seals are provided on the plate surface of the evaporator at positions surrounding each of the openings.

6. The heat exchanger according to claim 1, wherein, The pressing body has an opening through which a working fluid of liquid phase flows toward the evaporator, and a seal is provided on the side of the evaporator at a position surrounding the opening.

7. The heat exchanger according to claim 6, wherein, The evaporator has a liquid phase containment that forms the liquid phase containment chamber inside. The thermal conductivity of the pressing body is lower than that of the liquid phase container.

8. The heat exchanger according to claim 1, wherein, The pressing body has an opening for the liquid phase working fluid to flow internally toward the evaporator, and has an inclined surface that is the surface above the opening opposite to the opening, and is inclined in an upward direction as it separates from the side of the evaporator.

9. The heat exchanger according to claim 1, wherein, The pore diameter of the pressed portion in the evaporator is smaller than the pore diameter of the portion not pressed by the pressing body.

10. A heat exchanger comprising an evaporator, the evaporator having an evaporator body that absorbs heat from the outside and evaporates a liquid working fluid into a gaseous phase while moving it by capillary force, the heat exchanger causing the gaseous working fluid exiting the evaporator to condense and return to the evaporator as a liquid working fluid, wherein... The interior of the evaporator is separated by the evaporating body, and the evaporator has a liquid phase containment chamber located on one side when viewed from the evaporating body, which contains the working fluid in liquid phase; And a gas phase containment chamber, located on the opposite side of the liquid phase containment chamber across the evaporator, to contain the gaseous working fluid. The evaporator includes a pressing body, which, when viewed from the evaporator, is positioned on the side of the liquid phase containing chamber to press against the side of the evaporator on the liquid phase containing chamber side. The evaporator has a high-strength portion, which is the portion pressed by the pressing body, and its strength is higher than that of the portion not pressed by the pressing body.

11. A heat exchanger comprising an evaporator having a flat evaporating body, the evaporating body absorbing heat from the outside and evaporating a liquid working fluid into a gaseous phase while moving it through capillary force, the heat exchanger causing the gaseous working fluid exiting the evaporator to condense and return to the evaporator as a liquid working fluid, wherein... The interior of the evaporator is separated by the flat plate-shaped evaporator body, and the evaporator has a liquid phase containment chamber located on one side when viewed from the evaporator body, which contains the working fluid in liquid phase; And a gas phase containment chamber, located on the opposite side of the liquid phase containment chamber across the evaporator, to contain the gaseous working fluid. The evaporator includes a pressing body, which, when viewed from the evaporator, is positioned on the side of the liquid phase containment chamber and presses against the outer periphery of the plate surface on the liquid phase containment chamber side of the evaporator. The plate surface of the evaporator is longer in the horizontal direction. The pore diameter on the outer periphery of the plate surface in the evaporator is smaller than the pore diameter on the central side of the plate surface. The pressing body has: an outer peripheral frame portion that presses the outer periphery of the evaporator; and a central pressing portion that extends in the vertical direction, connects to the horizontal central side of the outer peripheral frame portion, and presses the plate surface of the evaporator.

12. An evaporator comprising an evaporator body that absorbs heat from the outside and evaporates a liquid working fluid into a gaseous phase while moving it by capillary force, the evaporator causing the gaseous working fluid evaporated by the evaporator body to flow out, and providing a condenser for the outflowing gaseous working fluid to be returned, wherein... The interior of the evaporator is separated by the evaporating body, and the evaporator has a liquid phase containment chamber located on one side when viewed from the evaporating body, which contains the working fluid in liquid phase; And a gas phase containment chamber, located on the opposite side of the liquid phase containment chamber across the evaporator, to contain the gaseous working fluid. The evaporator includes a pressing body, which, when viewed from the evaporator, is positioned on the side of the liquid phase containing chamber to press against the side of the evaporator on the liquid phase containing chamber side. The evaporator has a pressed portion, which is the part pressed by the pressing body, and has higher toughness than the part not pressed by the pressing body.

13. An apparatus comprising a heating element and a heat exchanger, the heat exchanger having an evaporator, the evaporator being provided with an evaporator that absorbs heat from the heating element and evaporates a liquid working fluid into a gaseous phase while moving it through capillary force, the heat exchanger causing the gaseous working fluid exiting the evaporator to condense and return to the evaporator as a liquid working fluid, wherein... The interior of the evaporator is separated by the evaporating body, and the evaporator has a liquid phase containment chamber located on one side when viewed from the evaporating body, which contains the working fluid in liquid phase; And a gas phase containment chamber, located on the opposite side of the liquid phase containment chamber across the evaporator, to contain the gaseous working fluid. The evaporator includes a pressing body, which, when viewed from the evaporator, is positioned on the side of the liquid phase containing chamber to press against the side of the evaporator on the liquid phase containing chamber side. The evaporator has a pressed portion, which is the part pressed by the pressing body, and has higher toughness than the part not pressed by the pressing body.

14. A mobile body, comprising: Driver source; Heating element, controlling the drive source; and A heat exchanger includes an evaporator, which absorbs heat from a heating element and evaporates a liquid working fluid into a gaseous phase while moving it through capillary force. The heat exchanger also condenses the gaseous working fluid exiting the evaporator and returns it to the evaporator as a liquid working fluid. The moving body moves under the drive of the drive source, wherein, The interior of the evaporator is separated by the evaporating body, and the evaporator has a liquid phase containment chamber located on one side when viewed from the evaporating body, which contains the working fluid in liquid phase; And a gas phase containment chamber, located on the opposite side of the liquid phase containment chamber across the evaporator, to contain the gaseous working fluid. The evaporator includes a pressing body, which, when viewed from the evaporator, is positioned on the side of the liquid phase containing chamber to press against the side of the evaporator on the liquid phase containing chamber side. The evaporator has a pressed portion, which is the part pressed by the pressing body, and its toughness is higher than that of the part not pressed by the pressing body. The evaporator has a shell, the interior of which is separated by the evaporating body. The shell is provided with a liquid phase containment chamber and a gas phase containment chamber. The long dimension of the housing is horizontal, and the housing is configured along the direction of travel of the moving body.

15. A heat exchanger comprising an evaporator having a flat evaporating body, the evaporating body absorbing heat from the outside and evaporating a liquid working fluid into a gaseous phase while moving it through capillary force, the heat exchanger causing the gaseous working fluid exiting the evaporator to condense and return to the evaporator as a liquid working fluid, wherein... The evaporator includes: Stores liquids, storing the working fluid in the liquid phase; A liquid phase container is disposed on the lower side of the stored liquid in the vertical direction to contain the working fluid of the liquid phase flowing down from the stored liquid; The evaporator, the plate surface of the evaporator is arranged in a vertical orientation, the evaporator causes the working fluid of the liquid phase contained in the liquid phase container to evaporate; as well as A gas phase container is disposed on the opposite side of the liquid phase container, separated from the evaporator, to contain the working fluid in the gas phase.

16. The heat exchanger according to claim 15, wherein, The liquid phase container has a liquid phase containment chamber for containing the working fluid of the liquid phase. The liquid phase containment chamber is longer in the horizontal direction than in the vertical direction.

17. The heat exchanger according to claim 16, wherein, The liquid phase containment chamber includes a first part located below the stored liquid and a second part located below the first part. The first part is shorter in the horizontal direction than the second part.

18. The heat exchanger according to claim 17, wherein, The dimension of the liquid storage in the horizontal direction is shorter than that of the second part in the horizontal direction.

19. The heat exchanger according to claim 15, wherein, The heat exchanger includes a pressing body, which is located on the liquid phase containment chamber side when viewed from the evaporator, and presses the outer periphery of the plate surface on the liquid phase containment chamber side of the evaporator.

20. The heat exchanger according to claim 19, wherein, The plate surface of the evaporator is longer in one direction. The pressing body has: an outer peripheral frame portion that presses the outer periphery of the evaporator; and a central pressing portion that extends in a direction intersecting the first direction, connects the central side of the outer peripheral frame portion in the first direction, and presses the plate surface of the evaporator.

21. The heat exchanger according to claim 15, wherein, The gas phase container has a heating surface, which is provided for an external heating element and receives heat from the heating element. The liquid storage is positioned above the heating element in the vertical direction and offset from the heating element in the horizontal direction.

22. The heat exchanger according to claim 21, wherein, The stored liquid protrudes horizontally to the opposite side of the liquid phase container towards the heating element.

23. The heat exchanger according to claim 21 or 22, wherein, The liquid storage container is a cylindrical shape that extends axially in the horizontal direction.

24. The heat exchanger according to claim 23, wherein, The liquid phase container and the gas phase container form a flat shell with the plate surface along the vertical direction.

25. A heat exchanger comprising an evaporator having a flat evaporating body, the evaporating body absorbing heat from the outside and evaporating a liquid working fluid into a gaseous phase while moving it through capillary force, the heat exchanger causing the gaseous working fluid exiting the evaporator to condense and return to the evaporator as a liquid working fluid, wherein... The evaporator includes: Liquid storage, a cylindrical shape extending axially in the horizontal direction, for storing the working fluid in the liquid phase; A liquid phase container is disposed on the lower side of the stored liquid in the vertical direction to contain the working fluid of the liquid phase flowing down from the stored liquid; The evaporator, the plate surface of the evaporator is arranged in a vertical orientation, the evaporator causes the working fluid of the liquid phase contained in the liquid phase container to evaporate; as well as A gas phase container, disposed on the opposite side of the liquid phase container across the evaporator, contains the gas phase working fluid. The liquid phase container and the gas phase container constitute a flat shell with its plate surface extending vertically. The liquid phase container has a liquid phase containment chamber for containing the working fluid of the liquid phase. The liquid phase containment chamber is longer than the stored liquid in the horizontal direction.

26. An evaporator comprising a flat evaporating body, the evaporating body absorbing heat from the outside and evaporating a liquid working fluid into a gaseous phase while moving it through capillary force, the evaporator allowing the gaseous working fluid evaporated by the evaporating body to flow out, and providing a condenser for the outflowing gaseous working fluid to be returned, wherein... The evaporator includes: Stores liquids, storing the working fluid in the liquid phase; A liquid phase container is disposed on the lower side of the stored liquid in the vertical direction to contain the working fluid of the liquid phase flowing down from the stored liquid; The evaporator, the plate surface of the evaporator is arranged in a vertical orientation, the evaporator causes the working fluid of the liquid phase contained in the liquid phase container to evaporate; as well as A gas phase container is disposed on the opposite side of the liquid phase container, separated from the evaporator, to contain the working fluid in the gas phase.

27. An apparatus comprising a heating element and a heat exchanger, the heat exchanger having an evaporator, the evaporator having a plate-shaped evaporating element, the evaporating element absorbing heat from the heating element and evaporating a liquid working fluid into a gaseous phase while moving it through capillary force, the heat exchanger causing the gaseous working fluid exiting the evaporator to condense and return to the evaporator as a liquid working fluid, wherein... The evaporator includes: Stores liquids, storing the working fluid in the liquid phase; A liquid phase container is disposed on the lower side of the stored liquid in the vertical direction to contain the working fluid of the liquid phase flowing down from the stored liquid; The evaporator, the plate surface of the evaporator is arranged in a vertical orientation, the evaporator causes the working fluid of the liquid phase contained in the liquid phase container to evaporate; as well as A gas phase container is disposed on the opposite side of the liquid phase container, separated from the evaporator, to contain the working fluid in the gas phase.

28. A mobile body, comprising: Driver source; Heating element, controlling the drive source; and A heat exchanger includes an evaporator with a flat evaporating body. The evaporating body absorbs heat from a heating element and evaporates a liquid working fluid into a gaseous phase while moving it through capillary force. The heat exchanger condenses the gaseous working fluid exiting the evaporator and returns it to the evaporator as a liquid working fluid. The moving body moves under the drive of the drive source, wherein, The evaporator includes: Liquid storage, a cylindrical shape extending axially in the horizontal direction, for storing the working fluid in the liquid phase; A liquid phase container is disposed on the lower side of the stored liquid in the vertical direction to contain the working fluid of the liquid phase flowing down from the stored liquid; The evaporator, the plate surface of the evaporator is arranged in a vertical orientation, the evaporator causes the working fluid of the liquid phase contained in the liquid phase container to evaporate; as well as A gas phase container, disposed on the opposite side of the liquid phase container across the evaporator, contains the gas phase working fluid. The liquid phase container and the gas phase container constitute a flat shell with its plate surface extending vertically. The axial direction of the liquid storage and the plate surface of the housing are arranged along the travel direction of the moving body.

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