Heat exchanger

Abstract

To provide a heat exchange device capable of reducing its size and improving its energy consumption efficiency.SOLUTION: A heat absorbing / generating part having elasticity has a heat absorbing / generating material which changes in phase along with the application / release of stress to absorb / generate heat. A heat conduction part for conducting the heat of the heat absorbing / generating part has an extension portion extending from a storage part. In the extension portion, heat exchange is performed.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a heat exchanger.

Background Art

[0002] Adsorption heat pumps (desiccant air conditioners) are known (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a conventional adsorption heat pump (desiccant air conditioner), the movement speed of refrigerant molecules in a porous body is slow. For this reason, when the refrigerant molecules evaporate (i.e., absorb heat), the evaporation speed of the refrigerant molecules is slow, and it is difficult to obtain a sufficient amount of heat absorption per unit time. In order to promote the evaporation of the refrigerant molecules, a method of raising the temperature of the porous body can be considered, but this method requires a heater for heat input, leading to an increase in the size of the device. In addition, energy is required to operate the heater, resulting in a decrease in energy consumption efficiency. The present invention has been made in view of such circumstances, and an object thereof is to provide a heat exchanger that can be miniaturized and can improve energy consumption efficiency.

Means for Solving the Problems

[0005] In the heat exchanger according to one aspect of the present invention, the elastic heat absorption and heat generation part has a heat absorption and heat generation material that absorbs or generates heat by undergoing a phase change in accordance with the application and release of stress. The heat conduction part that conducts the heat of the heat absorption and heat generation part has an extension part that extends from the housing part. Heat exchange is performed in the extension part.

Effects of the Invention

[0006] According to one aspect of the present invention, it is possible to provide a heat exchanger that can be miniaturized and whose energy consumption efficiency can be improved.

Brief Description of the Drawings

[0007]

Figure 1

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Best Mode for Carrying Out the Invention

[0008] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings referred to in the following description, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thicknesses of the respective layers, etc. are different from the actual ones. Therefore, specific thicknesses and dimensions should be determined in consideration of the following description. Needless to say, there are also portions where the dimensional relationships and ratios are different between the drawings.

[0009] Also, the definitions of directions such as up and down in the following description are merely for convenience of explanation and do not limit the technical idea of the present invention. For example, it goes without saying that if the object is rotated 90° and observed, up and down are read as left and right, and if it is rotated 180° and observed, up and down are read in reverse. Also, in the following description, the directions may be described using the terms in the X-axis direction, the Y-axis direction, and the Z-axis direction. For example, the Z-axis direction is an example of the "one direction" of the present invention and is the thickness direction of the heat conduction portion 12. In a plan view from the thickness direction of the heat conduction portion 12 (that is, the Z-axis direction), the X-axis direction is the longitudinal direction of the heat conduction portion 12, and the Y-axis direction is the short-side direction of the heat conduction portion 12. The X-axis direction, the Y-axis direction, and the Z-axis direction are orthogonal to each other.

[0010] <Embodiment 1> (Configuration Example) FIG. 1 is a schematic diagram showing a configuration example of a heat exchange unit 100 according to Embodiment 1 of the present invention in a three-dimensional manner. FIG. 2 is a schematic diagram showing a configuration example of a unit main body 1 according to Embodiment 1 of the present invention in a three-dimensional manner. As shown in FIG. 1, a heat exchange unit 100 (an example of the "heat exchange device" of the present invention) includes a unit main body 1 (an example of the "unit" of the present invention) and a press mechanism 3 that sandwiches the unit main body 1 from both sides in the thickness direction (for example, the Z-axis direction).

[0011] As shown in Fig. 2, the unit body 1 has an endothermic and exothermic part 11 with elasticity, a heat conduction part 12 that is in direct or indirect contact with the endothermic and exothermic part 11 to conduct the heat of the endothermic and exothermic part 11, and a housing part 13 that houses the endothermic and exothermic part 11 and the heat conduction part 12. Here, "elasticity" means the property of reversibly deforming greatly and returning to almost the original shape when the stress is released even if it contracts when a stress is applied from the outside.

[0012] The endothermic and exothermic part 11 includes an endothermic and exothermic material that absorbs heat with contraction and generates heat with expansion, or an endothermic and exothermic material that generates heat with contraction and absorbs heat with expansion. For example, as an endothermic and exothermic material that absorbs heat with contraction and generates heat with expansion, a combination of an elastic nanoporous body and a fluid refrigerant that is detachably adsorbed on the pore walls of the nanoporous body can be mentioned.

[0013] "Nanoporous" means having a plurality of nanopores. Nanopores preferably have a diameter of 0.5 to 100 nm, more preferably a diameter of 0.7 to 50 nm, and even more preferably micropores or mesopores with a diameter of 0.7 to 6 nm. In the IUPAC (International Union of Pure and Applied Chemistry), pores with a diameter of 2 nm or less are defined as micropores, pores with a diameter of 2 to 50 nm are defined as mesopores, and pores with a diameter of 50 nm or more are defined as macropores.

[0014] Examples of the nanoporous body include Graphene MesoSponge (GMS) and Zeorite Template Carbon (ZTC). Both GMS and ZTC are composed of a single-layer graphene skeleton and have the porous and elastic properties necessary for the desorption and adsorption of the fluid refrigerant.

[0015] GMS is a sponge-like mesoporous body in which most of the pore walls are composed of single-layer graphene and has tiny pores of about 6 nm, and has an extremely high BET specific surface area (about 2000 m 2It has (g). On the other hand, unlike activated carbon and carbon black, it contains almost no graphene edges that cause corrosion, so it also has excellent corrosion resistance (oxidation resistance). Also, due to the property of graphene being flexible and tough, GMS is excellent in flexibility and elasticity and can reversibly elastically deform until the pore diameter becomes from about 5.8 nm to about 0.7 nm. The manufacturing method of GMS is described in Nishihara, H. et al., Advanced Functional Materials, Vol. 26, 2016, 6418 - 6427.

[0016] ZTC is composed of a single - layer graphene sheet. Also, uniform pores (with a diameter of about 1.2 nm) are three - dimensionally regularly arranged and interconnected, and it has an extremely high BET specific surface area and pore volume (the maximum BET specific surface area is 4100 m 2 / g and the pore volume is 1.8 cc / g) as is known. The manufacturing method of ZTC is described in Nishihara, H. et al., Chemistry - European Journal 15, 5355 (2009), etc.

[0017] In the present invention, the nanoporous body is not limited to GMS or ZTC. As long as the nanoporous body has elasticity, can contract to desorb the fluid refrigerant, and can expand to adsorb the fluid refrigerant, other materials may be used. As such an example, carbon mesosponge (CMS; Carbon MesoSponge) having spherical mesopores can be mentioned. Examples of the fluid refrigerant include, for example, water or alcohol. As an example of alcohol, methanol or ethanol can be mentioned. A fluid means a liquid, a gas, or a mixture of a liquid and a gas.

[0018] Also, as an endothermic and exothermic material that generates heat with contraction and absorbs heat with expansion, solid refrigerants (for example, elastocaloric or barocaloric materials) can be mentioned. As an elastocaloric material, an alloy containing Ti (as an example, TiNi, BaTiO3, PbZr 0.95 Ti0.05 Examples include O3. As the pressure calorimeter, organic resins containing hydrogen bonds (for example, neopentyl glycol (NPG), pentaerythritol (PE), pentaglycerin (PE)) can be mentioned. Also, the solid refrigerant may be a material other than those described above. For example, as the elastocaloric, Gd5Si2Ge2, La(Fe,Co,Si) 13 , MnCoGeB 0.02 , PVDF-TrFE, Cu2ZnAl, FeRh can be mentioned. As the pressure calorimeter, (NH4)SO4, AgI, rubber, AMP, TRIS, MNP, NMP can be mentioned.

[0019] The heat conduction part 12 is a metal plate made of a metal with excellent heat conductivity (for example, copper (Cu) or a Cu alloy). The plate-like heat conduction part 12 may be rephrased as a plate. The heat conduction part 12 has a front surface 12a and a back surface 12b located on the opposite side of the front surface 12a. For example, the heat absorption and heat generation part 11 is provided in a layered manner on the front surface 12a side. Thereby, the heat transfer area increases, and heat can be effectively transferred to the outside.

[0020] The heat conduction part 12 has a contact part 121 accommodated in the accommodation part 13 and in direct or indirect contact with the heat absorption and heat generation part 11, and an extension part 122 connected to the contact part 121 and extending from the accommodation part 13. The extension part 122 may be rephrased as a fin part. The contact part 121 and the extension part 122 are integrally formed of a single metal plate. The contact part 121 exchanges heat with the heat absorption and heat generation part 11 existing in the accommodation part 13, and the extension part 122 exchanges heat with a medium (for example, air) existing outside the accommodation part 13. In FIG. 1, the heat exchanged by the extension part 122 is schematically shown as "heat Q". The accommodation part 13 is made of a material having elasticity and a low thermal conductivity (for example, resin, rubber, etc.). Inside the accommodation part 13, the heat absorption and heat generation part 11 and the contact part 121 of the heat conduction part 12 are accommodated in a sealed state.

[0021] As shown in Fig. 1, the pressing mechanism 3 includes a first clamping body 31, a second clamping body 32 arranged to face the first clamping body 31, a shaft portion 33 that relatively approaches or separates the first clamping body 31 with respect to the second clamping body 32, and a support portion 34 that rotatably supports the shaft portion 33 around its axis. The shaft portion 33 is connected to the output shaft of a motor (not shown) and rotates integrally with the output shaft of the motor. By rotating, the shaft portion 33 is movable in the axial direction (for example, the Z-axis direction). The pressing mechanism 3 sandwiches and fixes the unit main body 1 between the first clamping body 31 and the second clamping body 32. While maintaining the state of fixing the unit main body 1, as the shaft portion 33 moves in the axial direction, the pressing mechanism 3 applies stress to the heat absorption and heat generation portion of the unit main body 1 or releases the applied stress.

[0022] (Specific Example 1) Fig. 3 is a plan view showing Specific Example 1 of the unit main body 1 according to Embodiment 1 of the present invention. Fig. 4 is a cross-sectional view of the unit main body 1 shown in Fig. 3 cut along the line X1-X´1. Figs. 3 and 4 show a specific example in the case where the heat absorption and heat generation portion 11 includes a heat absorption and heat generation material that absorbs heat during contraction and generates heat during expansion. In this case, the heat absorption and heat generation material is a combination of a nanoporous body 111 such as GMS and a fluid refrigerant such as water or alcohol.

[0023] As shown in Figs. 3 and 4, a space S for holding the vapor of the fluid refrigerant (hereinafter referred to as refrigerant vapor) 112 is provided in the housing portion 13. The refrigerant vapor 112 that desorbs from the pore walls of the pores and vaporizes by applying stress to the nanoporous body 111 is secured in this space S. The housing portion 13 is sealed so that the refrigerant vapor 112 does not leak out of the housing portion 13. The refrigerant vapor 112 is enclosed in the housing portion 13.

[0024] The pressure inside the housing portion 13 is set to approximately the saturation vapor pressure of the refrigerant vapor 112 at normal temperature and without applying stress for generating endothermic heat. The nanoporous body 111 uses the one in which refrigerant vapor is adsorbed in an environment of approximately 85% of the saturation vapor pressure at normal temperature. For example, when the fluid solvent is methanol, the pressure inside the housing portion 13 is set to approximately 20 kPa (abs) at normal temperature and without applying stress for generating endothermic heat. Inside the housing portion 13, the nanoporous body 111 in which methanol vapor is adsorbed in an environment of approximately 17 kPa (= 20 kPa × 0.85) at normal temperature is disposed.

[0025] The operation of Specific Example 1 will be described. When stress is applied to the endothermic and exothermic portion 11 via the housing portion 13, the pores of the nanoporous body 111 constituting the endothermic and exothermic portion 11 contract, and the fluid refrigerant adsorbed on the pore walls of the nanoporous body 111 desorbs from the pore walls. When desorbing from the pore walls, the fluid refrigerant vaporizes (i.e., evaporates) to become the refrigerant vapor 112. The fluid refrigerant absorbs heat by changing its phase from the liquid phase to the gas phase inside the housing portion 13, and reduces the temperature of the nanoporous body 111. Since the nanoporous body 111 is in contact with the heat conduction portion 12, the temperature of the heat conduction portion 12 decreases. Thereby, the extending portion 122 of the heat conduction portion 12 can exchange heat with air or the like existing outside the housing portion 13 by convection or radiation to cool the air.

[0026] Also, when the stress applied to the endothermic and exothermic portion 11 is released, the pores of the nanoporous body 111 constituting the endothermic and exothermic portion 11 expand from the contracted state. The refrigerant vapor 112 existing inside the housing portion 13 is adsorbed on the pore walls of the nanoporous body 111 and liquefies. The refrigerant vapor 112 generates heat by changing its phase from the gas phase to the liquid phase inside the housing portion 13, and increases the temperature of the nanoporous body 111. Since the nanoporous body 111 is in contact with the heat conduction portion 12, the temperature of the heat conduction portion 12 increases. Thereby, the extending portion 122 of the heat conduction portion 12 can exchange heat with air or the like existing outside the housing portion 13 by convection or radiation to warm the air.

[0027] (Specific Example 2) FIG. 5 is a plan view showing a specific example 2 of the unit main body 1 according to Embodiment 1 of the present invention. FIG. 6 is a cross-sectional view of the unit main body 1 shown in FIG. 5 cut along the line X2-X'2. FIGS. 5 and 6 show a specific example in the case where the heat absorption and heat generation part 11 includes a heat absorption and heat generation material that generates heat as it contracts and absorbs heat as it expands. In this case, the heat absorption and heat generation material is a solid refrigerant 115 such as an elastic calorimeter or a pressure calorimeter.

[0028] Also in the specific example 2 shown in FIGS. 5 and 6, similar to the specific example 1, the accommodation part 13 is sealed, and the solid refrigerant 115 arranged in the accommodation part 13 is blocked from the outside. Thereby, the solid refrigerant 115 can prevent the occurrence of contamination and can improve durability. Further, in the specific example 2, since a fluid refrigerant 112 that repeats vaporization and liquefaction is not required, the space S in the accommodation part 13 can be made smaller than in the specific example 1. Thereby, the unit main body 1 including the accommodation part 13 can be miniaturized.

[0029] The operation of the specific example 2 will be described. When stress is applied to the heat absorption and heat generation part 11 via the accommodation part 13, the solid refrigerant 115 constituting the heat absorption and heat generation part 11 contracts, and the molecular structure or molecular arrangement of the solid refrigerant 115 changes. In the solid refrigerant 115, the change in its molecular structure or molecular arrangement corresponds to a phase change. The solid refrigerant 115 generates heat by undergoing a phase change while remaining solid, and raises the temperature of the heat conduction part 12. Thereby, the extending part 122 of the heat conduction part 12 can exchange heat with air or the like existing outside the accommodation part 13 by convection or radiation to warm the air.

[0030] Also, when the stress applied to the heat absorption and heat generation part 11 is released, the solid refrigerant 115 constituting the heat absorption and heat generation part 11 expands from the contracted state, and the molecular structure or molecular arrangement of the solid refrigerant 115 undergoes a phase change and returns to its original form. The solid refrigerant absorbs heat by undergoing a phase change and returning to its original form, and lowers the temperature of the heat conduction part 12. Thereby, the extending part 122 of the heat conduction part 12 can exchange heat with air or the like existing outside the accommodation part 13 by convection or radiation to cool the air.

[0031] (Effect of Embodiment 1) The heat exchange unit 100 according to Embodiment 1 of the present invention includes an endothermic and exothermic part 11 having elasticity, a heat conduction part 12 that is in direct or indirect contact with the endothermic and exothermic part 11 and conducts the heat of the endothermic and exothermic part 11, a housing part 13 that houses the endothermic and exothermic part 11 and the heat conduction part 12, and a press mechanism 3 that performs an operation of applying stress to the endothermic and exothermic part 11 housed in the housing part 13 and an operation of releasing the applied stress. The endothermic and exothermic part 11 has an endothermic and exothermic material that absorbs or releases heat by undergoing a phase change in accordance with the application and release of stress. The heat conduction part has an extension part that extends from the housing part, and heat exchange is performed at the extension part.

[0032] According to this, the heat exchange unit 100 can exchange heat with a medium (for example, air) existing outside the housing part 13 using the endothermic and exothermic part 11 that absorbs or releases heat by the phase change of the endothermic and exothermic material as a heat source. In the heat exchange unit 100, since the press load by the press mechanism 3 becomes the input energy instead of the heat input by a heater, the energy consumption efficiency (COP: Coefficient Of Performance) can be improved. Further, since the heat exchange unit 100 does not require a heater for heat input, it can be miniaturized.

[0033] (Modification example) FIG. 7 is a cross-sectional view showing a modification example of the unit main body 1 according to Embodiment 1 of the present invention. As shown in FIG. 7, in this modification example, the contact surface SC between the endothermic and exothermic part 11 and the heat conduction part 12 includes at least one of unevenness and a curved surface. The unevenness included in the contact surface SC may be linear unevenness or curved unevenness in a cross-sectional view. Further, the unevenness or the curved surface included in the contact surface SC may have a regular shape or an irregular shape. The curved surface may be wavy. The contact surface SC including at least one of the unevenness and the curved surface can be formed, for example, by subjecting the surface 12a of the contact part 121 of the heat conduction part 12 to a roughening treatment by etching, MEMS (Micro Electro Mechanical Systems), or cutting, and then providing the endothermic and exothermic material (for example, the nanoporous body 111 or the solid refrigerant 115) of the endothermic and exothermic part 11 on the roughened surface 12a.

[0034] According to this modification example, the unit main body 1 can increase the contact area between the heat absorption / generation part 11 and the heat conduction part 12. Thereby, the unit main body 1 can reduce the thermal resistance between the heat absorption / generation part 11 and the heat conduction part 12, and can increase the amount of heat transfer between the heat absorption / generation part 11 and the heat conduction part 12, so that the COP can be further improved.

[0035] <Embodiment 2> (Configuration example) FIG. 8 is a schematic diagram showing three-dimensionally Configuration Example 1 of the unit main body 1A according to Embodiment 2 of the present invention. FIG. 9 is a schematic diagram showing three-dimensionally Configuration Example 2 of the unit main body 1A according to Embodiment 2 of the present invention. FIG. 10 is a schematic diagram showing three-dimensionally Configuration Example 3 of the unit main body 1A according to Embodiment 2 of the present invention. The unit main body 1A (an example of the "unit" of the present invention) has a plurality of heat conduction parts 12. The plurality of heat conduction parts 12 sandwich the heat absorption / generation part 11 from both sides in the thickness direction (for example, the Z-axis direction).

[0036] For example, as shown in FIG. 8, two heat conduction parts 12 sandwich one heat absorption / generation part 11 from both sides in the Z-axis direction. The two heat conduction parts 12 and one heat absorption / generation part 11 are accommodated in one accommodating part 13. A gap G is provided between one extending part 122 and the other extending part 122 adjacent to each other in the Z-axis direction. Also, as shown in FIG. 9, the two heat conduction parts 12 may sandwich two heat absorption / generation parts 11 from both sides in the Z-axis direction. In this case, a metal foil 14 may be provided between the two heat absorption / generation parts 11. The two heat conduction parts 12, the two heat absorption / generation parts 11, and one metal foil 14 may be accommodated in one accommodating part 13. The metal foil 14 can enhance the heat transfer property between the two heat absorption / generation parts 11.

[0037] Also, as shown in FIG. 10, the heat absorption and heat generation part 11 sandwiched between the two heat conduction parts 12 may be laminated in multiple layers, and a thin film excellent in heat conduction, for example, a metal foil 14 (an example of the "high thermal conductivity foil" of the present invention), may be disposed between the layers of the multiple layers. A laminate 15 in which the heat absorption and heat generation part 11 and the metal foil 14 are alternately arranged may be configured. For example, the heat absorption and heat generation part 11 is a nanoporous body with a thickness of 100 μm per layer. The metal foil 14 is a copper foil or an aluminum foil with a thickness of 20 μm per layer. The thickness of the laminate 15 is approximately 5 mm with the heat absorption and heat generation part 11 and the metal foil 14 laminated alternately layer by layer. Note that the high thermal conductivity foil is not limited to a metal foil. The high thermal conductivity foil may be carbon or an engineering plastic sheet as long as it is a foil with good heat conduction.

[0038] The interval Gd of the gap G existing between the extending parts 122 is the interval between the heat exchange fins. By setting this interval Gd to an optimum length for the assumed heat transfer, it is possible to enhance the heat transfer efficiency. In the configuration example 3 shown in FIG. 10, by adjusting the number of laminations of the nanoporous body 111 and the metal foil 14, the above interval Gd can be set to an arbitrary value. By increasing the number of laminations of the nanoporous body 111 and the metal foil 14, the above interval Gd can be increased. Even when it is difficult to form the nanoporous body 111 thick, the interval Gd can be easily adjusted by increasing the number of laminations.

[0039] FIG. 11 is a schematic diagram showing three-dimensionally a configuration example of a heat exchange unit 100A according to Embodiment 2 of the present invention. As shown in FIG. 11, the heat exchange unit 100A (an example of the "heat exchange device" of the present invention) includes a plurality of unit bodies 1A stacked and arranged in the Z-axis direction, and a press mechanism 3 that sandwiches the plurality of unit bodies 1A from both sides in the Z-axis direction.

[0040] The pressing mechanism 3 sandwiches and fixes a plurality of unit bodies 1A between a first clamping body 31 and a second clamping body 32. While maintaining the state in which the plurality of unit bodies 1A are fixed, the pressing mechanism 3 applies stress to the heat absorption / generation parts 11 (see, for example, FIGS. 8 to 10) of the plurality of unit bodies 1A or releases the applied stress by moving the shaft part 33 in the axial direction. Thereby, heat exchange can be performed between the extending part 122 and the medium (for example, air) existing outside the accommodating part 13 in each of the plurality of unit bodies 1A. In addition, in FIG. 11, three or more heat conduction parts 12 may be accommodated in one accommodating part 13 to constitute one unit body 1A. For example, all the heat conduction parts 12 shown in FIG. 10 may be arranged in one accommodating part 13 to constitute one unit body 1A.

[0041] (Effect of Embodiment 2) The unit body 1A according to Embodiment 2 of the present invention includes a plurality of heat conduction parts 12. In the unit body 1A, both surfaces of the heat absorption / generation part 11 are in direct or indirect contact with the heat conduction parts 12. Thereby, the unit body 1A can increase the contact area between the heat absorption / generation part 11 and the heat conduction parts 12 compared with the unit body 1 according to Embodiment 1. The unit body 1A can reduce the thermal resistance between the heat absorption / generation part 11 and the heat conduction parts 12 and can increase the amount of heat transfer between the heat absorption / generation part 11 and the heat conduction parts 12, so that the COP can be further improved.

[0042] (Modification) FIG. 12 is a cross-sectional view showing a modified example of the unit body 1A according to Embodiment 2 of the present invention. As shown in FIG. 12, in this modified example, a spacer 16 is disposed in a gap G between one extension portion 122 and the other extension portion 122 adjacent to each other in the Z-axis direction. The spacer 16 is composed of, for example, a metal fin having elasticity. One end portion 161 of the spacer 16 is fixed to one extension portion 122 by brazing or welding or the like. The other end portion 162 of the spacer 16 is in contact with the other extension portion 122 but is not fixed. The end portion 162 of the spacer 16 can move (i.e., slide) while sliding on the surface of the other extension portion 122. The sliding direction is the longitudinal direction of the extension portion (for example, the X-axis direction).

[0043] According to this modified example, when stress is applied to the heat absorption and dissipation portion 11 (see FIGS. 8 to 10) by the pressing mechanism 3 (see FIG. 11), the spacer 16 secures the gap G. Since the gap G is secured, the extension portion 122 can maintain high heat transfer performance. In addition, since the end portion 162 of the spacer 16 can slide on the surface of the extension portion 122 under the above stress, the force applied to the extension portion 122 can be relaxed, and the occurrence of distortion in the extension portion 122 can be suppressed. Further, since the spacer 16 is made of metal, the heat transfer area increases by the amount of its surface area. Note that, in this modified example, the spacer 16 is not limited to a metal fin. The spacer 16 may be made of resin or may not be fin-shaped. Even in such a case, the spacer 16 contributes to securing the gap G.

[0044] <Embodiment 3> FIG. 13 is a schematic perspective view showing a configuration example of the heat exchanger 200 according to Embodiment 3 of the present invention. As shown in FIG. 13, the heat exchanger 200 includes the heat exchange unit 100A described in Embodiment 2 (or the heat exchange unit 100 described in Embodiment 1) and an air duct 150 (an example of the "medium flow path" of the present invention) through which air flows. The air duct 150 may be referred to as a duct. The extension portion 122 is disposed in the air duct 150. According to this, the heat exchanger 200 can send air to the extending portion 122 and efficiently perform heat exchange between the extending portion 122 and the air. The heat exchanger 200 can obtain cold air or warm air with high efficiency.

[0045] <Application Example> The heat exchange unit 100 shown in FIG. 1, the heat exchange unit 100A shown in FIG. 11, and the heat exchanger 200 shown in FIG. 13 are applicable to, for example, an air conditioner mounted on a vehicle or the like. Further, the heat exchange units 100 and 100A and the heat exchanger 200 may be applied to an air conditioner mounted on something other than a vehicle, or may be applied to a device other than an air conditioner.

Explanation of Reference Numerals

[0046] 1, 1A... unit main body, 3... pressing mechanism, 11... heat absorption and generation part, 12... heat conduction part, 12a... surface, 12b... back surface, 13... accommodating part, 14... metal foil (an example of a high thermal conductivity foil), 15... laminate, 16... spacer, 31... first clamping body, 32... second clamping body, 33... shaft part, 34... support part, 100, 100A... heat exchange unit, 111... nanoporous body, 112... fluid refrigerant (refrigerant vapor), 115... solid refrigerant, 121... contact part, 122... extending part, 150... air conduction path, 161, 162... end parts, 200... heat exchanger, G... gap, Gd... interval, S... space, SC... contact surface

Claims

1. An endothermic and exothermic part having elasticity, A heat conduction part that is in direct or indirect contact with the endothermic and exothermic part and conducts the heat of the endothermic and exothermic part, A housing part that houses the endothermic and exothermic part and the heat conduction part, A press mechanism that performs an operation of applying stress to the endothermic and exothermic part housed in the housing part from the outside of the housing part and an operation of releasing the stress, The endothermic and exothermic part, Has an endothermic and exothermic material that absorbs or releases heat by undergoing a phase change accompanying the application and release of the stress, The heat conduction part, Has an extension part that extends from the housing part and performs heat exchange at the extension part, The heat conduction part is plate-shaped, The endothermic and exothermic part is formed in layers on the plate-shaped heat conduction part, The press mechanism performs an operation of applying the stress and an operation of releasing the stress along the thickness direction of the plate-shaped heat conduction part and the layer-shaped endothermic and exothermic part, a heat exchange device.

2. The heat exchange device according to claim 1, wherein the endothermic and exothermic material is a fluid refrigerant that changes from a liquid phase to a gas phase and absorbs heat when the stress is applied, and changes from a gas phase to a liquid phase and releases heat when the stress is released.

3. The endothermic and exothermic part further has a nanoporous body, The fluid refrigerant, Evaporates from the pore walls of the nanoporous body when the stress is applied and adsorbs to the pore walls when the stress is released, the heat exchange device according to claim 2.

4. The heat exchange device according to claim 1, wherein the endothermic and exothermic material is a solid refrigerant.

5. An endothermic and exothermic part having elasticity, A heat conduction part that is in direct or indirect contact with the endothermic and exothermic part and conducts the heat of the endothermic and exothermic part, A housing part that houses the endothermic and exothermic part and the heat conduction part, A press mechanism that performs an operation of applying stress to the endothermic and exothermic part housed in the housing part and an operation of releasing the stress, The endothermic and exothermic part, Has an endothermic and exothermic material that absorbs or releases heat by undergoing a phase change accompanying the application and release of the stress, The heat conduction part, Has an extension part that extends from the housing part and performs heat exchange at the extension part, The endothermic and exothermic part is laminated in a plurality of layers, A heat exchange device further comprising a high thermal conductivity foil disposed between the plurality of layers.

6. The heat exchange device according to any one of claims 1 to 5, wherein the endothermic and exothermic material is encapsulated in the housing part.

7. The heat exchange device according to any one of claims 1 to 6, wherein the contact surface between the endothermic and exothermic part and the heat conduction part includes irregularities.

8. The heat exchange device according to any one of claims 1 to 7, wherein the contact surface between the heat absorption and heat generation part and the heat conduction part includes a curved surface.

9. The heat exchange device according to any one of claims 1 to 8, wherein the heat conduction part sandwiches the heat absorption and heat generation part from both sides in one direction.

10. The heat exchange device according to claim 9, wherein a gap is provided between one of the extension parts and the other extension part adjacent to each other in the one direction.

11. A heat absorption and heat generation part having elasticity, A heat conduction part that is in direct or indirect contact with the heat absorption and heat generation part and conducts the heat of the heat absorption and heat generation part, A housing part that houses the heat absorption and heat generation part and the heat conduction part, A press mechanism that performs an operation of applying stress to the heat absorption and heat generation part housed in the housing part and an operation of releasing the stress, The heat absorption and heat generation part Has a heat absorption and heat generation material that absorbs or generates heat by undergoing a phase change in accordance with the application and release of the stress, The heat conduction part Has an extension part extending from the housing part, and performs heat exchange at the extension part, The heat conduction part sandwiches the heat absorption and heat generation part from both sides in one direction, A gap is provided between one of the extension parts and the other extension part adjacent to each other in the one direction, A heat exchange device further comprising a spacer disposed in the gap.

12. The heat exchange device according to claim 11, wherein the spacer has elasticity.

13. Having a plurality of units including the heat absorption and heat generation part and the heat conduction part, The heat exchange device according to any one of claims 1 to 12, wherein the plurality of units are stacked and arranged.

14. Further comprising a medium flow path through which a medium flows, The heat exchange device according to any one of claims 1 to 13, wherein the extension part is disposed in the medium flow path.

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