JP7700524B2 - heat exchange equipment - Google Patents

Description

The present invention relates to a heat exchange device.

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

Japanese Unexamined Patent Publication No. 10-197011

In conventional adsorption heat pumps (desiccant air conditioners), the movement speed of refrigerant molecules in the porous body is slow. Therefore, when the refrigerant molecules evaporate (i.e., absorb heat), the evaporation speed of the refrigerant molecules is slow, making it difficult to obtain a sufficient amount of heat absorption within a unit time. In order to promote the evaporation of the refrigerant molecules, a method of increasing the temperature of the porous body can be considered, but this method requires a heater for heat input, which leads to an increase in the size of the device. In addition, energy is required to operate the heater, which reduces the energy consumption efficiency.
The present invention has been made in consideration of the above circumstances, and has an object to provide a heat exchanger that can be made compact and has improved energy consumption efficiency.

In a heat exchange device according to one aspect of the present invention, the elastic heat absorbing and generating part has a heat absorbing and generating material that absorbs or generates heat by changing phase when stress is applied and released. The heat conducting part that conducts heat from the heat absorbing and generating part has an extension part that extends from the housing part. Heat exchange is performed in the extension part.

According to one aspect of the present invention, it is possible to provide a heat exchange device that can be miniaturized and has improved energy consumption efficiency.

FIG. 1 is a schematic diagram showing a three-dimensional configuration example of a heat exchange unit according to a first embodiment of the present invention. FIG. 2 is a schematic diagram showing a three-dimensional configuration example of the unit main body according to the first embodiment of the present invention. FIG. 3 is a plan view showing a first specific example of the unit body according to the first embodiment of the present invention. FIG. 4 is a cross-sectional view of the unit body shown in FIG. 3 taken along line X1-X'1. FIG. 5 is a plan view showing a second specific example of the unit body according to the first embodiment of the present invention. 6 is a cross-sectional view of the unit body shown in FIG. 5 taken along line X2-X'2. FIG. 7 is a cross-sectional view showing a modified example of the unit body according to the first embodiment of the present invention. FIG. 8 is a schematic three-dimensional view showing a first configuration example of a unit main body according to the second embodiment of the present invention. FIG. 9 is a schematic three-dimensional view showing a second configuration example of a unit main body according to the second embodiment of the present invention. FIG. 10 is a schematic three-dimensional view showing a third configuration example of a unit main body according to the second embodiment of the present invention. FIG. 11 is a schematic diagram showing a three-dimensional configuration example of a heat exchange unit according to the second embodiment of the present invention. FIG. 12 is a cross-sectional view showing a modified example of the unit body according to the second embodiment of the present invention. FIG. 13 is a three-dimensional schematic diagram showing a configuration example of a heat exchanger according to a third embodiment of the present invention.

Below, an embodiment of the present invention will be described with reference to the drawings. In the drawings referred to in the following description, the same or similar parts are given the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between thickness and planar dimensions, the thickness ratio of each layer, etc., differ from the actual ones. Therefore, the specific thickness and dimensions should be determined with reference to the following description. In addition, it goes without saying that the drawings include parts with different dimensional relationships and ratios.

In addition, the definitions of directions such as up and down in the following description are merely for the convenience of explanation and do not limit the technical idea of the present invention. For example, if an object is rotated 90 degrees and observed, up and down are converted to left and right and read, and if it is rotated 180 degrees and observed, up and down are reversed and read.
In the following description, directions may be described using the terms X-axis direction, Y-axis direction, and Z-axis direction. For example, the Z-axis direction is an example of "one direction" in the present invention, and is the thickness direction of the heat conductive section 12. In a plan view from the thickness direction of the heat conductive section 12 (i.e., the Z-axis direction), the X-axis direction is the longitudinal direction of the heat conductive section 12, and the Y-axis direction is the lateral direction of the heat conductive section 12. The X-axis direction, Y-axis direction, and Z-axis direction are mutually perpendicular.

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

As shown in FIG. 2, the unit body 1 has an elastic heat absorbing and generating part 11, a heat conductive part 12 that is in direct or indirect contact with the heat absorbing and generating part 11 and conducts heat from the heat absorbing and generating part 11, and a housing part 13 that houses the heat absorbing and generating part 11 and the heat conductive part 12. Note that "elasticity" refers to the property of being able to reversibly deform significantly and recover to almost the original shape when the stress is released, even if it contracts due to the application of external stress.

The heat absorbing and heat generating portion 11 includes a heat absorbing and heat generating material that absorbs heat as it contracts and generates heat as it expands, or a heat absorbing and heat generating material that generates heat as it contracts and absorbs heat as it expands.
For example, a heat absorbing/heating material that absorbs heat upon contraction and generates heat upon expansion can be a combination of an elastic nanoporous body and a fluid refrigerant that removably adsorbs to the pore walls of the nanoporous body.

"Nanoporous" means having multiple nano-level pores. Nano-level pores are preferably micropores or mesopores with a diameter of 0.5 to 100 nm, more preferably 0.7 to 50 nm, and even more preferably 0.7 to 6 nm. The International Union of Pure and Applied Chemistry (IUPAC) defines pores with a diameter of 2 nm or less as micropores, pores with a diameter of 2 to 50 nm as mesopores, and pores with a diameter of 50 nm or more as macropores.

Examples of nanoporous materials include graphene mesosponge (GMS) and zeolite template carbon (ZTC). Both GMS and ZTC are made of a single-layer graphene framework and have the porosity and elasticity required for the desorption and adsorption of fluid refrigerants.

GMS is a sponge-like mesoporous material with pore walls mostly made of single-layer graphene and having micropores of about 6 nm in size, and has an extremely high BET specific surface area (about 2000 m ² /g) comparable to that of activated carbon. On the other hand, unlike activated carbon and carbon black, it contains almost no graphene ends that cause corrosion, and therefore has excellent corrosion resistance (oxidation resistance). In addition, due to the properties of graphene, which is flexible and tough, GMS has excellent flexibility and elasticity, and can reversibly elastically deform from about 5.8 nm to about 0.7 nm in pore diameter. The method for producing GMS is described in Nishihara, H. et al., Advanced Functional Materials, Vol. 26, 2016, 6418-6427.

ZTC is composed of a single-layer graphene sheet. It is known that uniform pores (diameter about 1.2 nm) are three-dimensionally arranged and interconnected, and that it has a very high BET specific surface area and pore volume (maximum BET specific surface area of 4100 m ² /g and pore volume of 1.8 cc/g). The method for producing ZTC is described in Nishihara, H. et al., Chemistry-European Journal 15, 5355 (2009), etc.

In the present invention, the nanoporous body is not limited to GMS or ZTC. Any other material may be used as the nanoporous body as long as it has elasticity, can contract to desorb the fluid refrigerant, and can expand to adsorb the fluid refrigerant. An example of such a material is carbon mesosponge (CMS) having spherical mesopores.
Fluid coolants include, for example, water or alcohol. An example of an alcohol is methanol or ethanol. Fluid means a liquid or a gas, or a mixture of a liquid and a gas.

In addition, examples of heat absorbing and absorbing materials that generate heat with contraction and absorb heat with expansion include solid refrigerants (e.g., elastic calorific elements or pressure calorific elements). Examples of elastic calorific elements include alloys containing Ti (e.g., TiNi, BaTiO ₃ , PbZr _0.95 Ti _0.05 O ₃ ). Examples of pressure calorific elements include organic resins containing hydrogen bonds (e.g., neopentyl glycol (NPG), pentaerythritol (PE), and pentaglycerin (PE)). In addition, the solid refrigerant may be a material other than those mentioned above. For example, examples of elastic calorific elements include Gd ₅ Si ₂ Ge ₂ , La(Fe,Co,Si) ₁₃ , MnCoGeB _0.02 , PVDF-TrFE, Cu ₂ ZnAl, and FeRh. Examples of pressure calorific substances include (NH ₄ )SO ₄ , AgI, rubber, AMP, TRIS, MNP, and NMP.

The heat conducting portion 12 is a metal plate made of a metal with excellent thermal conductivity (e.g., copper (Cu) or a Cu alloy). The plate-shaped heat conducting portion 12 may also be called a plate. The heat conducting portion 12 has a front surface 12a and a back surface 12b located on the opposite side of the front surface 12a, and for example, the heat absorbing and heat absorbing portion 11 is provided in layers on the front surface 12a side. This increases the heat transfer area, allowing heat to be transferred to the outside more effectively.

The thermally conductive portion 12 has a contact portion 121 that is accommodated in the accommodation portion 13 and that is in direct or indirect contact with the heat absorbing and generating portion 11, and an extension portion 122 that is connected to the contact portion 121 and extends from the accommodation portion 13. The extension portion 122 may be referred to as a fin portion. The contact portion 121 and the extension portion 122 are integrally formed from a single metal plate. The contact portion 121 exchanges heat with the heat absorbing and generating portion 11 that exists in the accommodation portion 13, and the extension portion 122 exchanges heat with a medium (e.g., air) that exists outside the accommodation portion 13. In FIG. 1, the heat exchanged by the extension portion 122 is shown as "heat Q" in a schematic manner.
The housing 13 is made of a material having elasticity and low thermal conductivity (e.g., resin, rubber, etc.). The heat absorbing/generating part 11 and the contact part 121 of the heat conductive part 12 are housed in the housing 13 in a sealed state.

1, the press mechanism 3 has a first clamping body 31, a second clamping body 32 arranged to face the first clamping body 31, a shaft portion 33 that moves the first clamping body 31 relatively closer to or farther away from the second clamping body 32, and a support portion 34 that supports the shaft portion 33 rotatably about its axis. The shaft portion 33 is connected to an output shaft of a motor (not shown) and rotates integrally with the output shaft of the motor. The shaft portion 33 is movable in the axial direction (e.g., the Z-axis direction) by rotating.
The press mechanism 3 clamps and fixes the unit body 1 between a first clamping body 31 and a second clamping body 32. The press mechanism 3 applies stress to the heat absorbing and generating parts of the unit body 1 or releases the applied stress by moving a shaft part 33 in the axial direction while maintaining the unit body 1 in a fixed state.

(Specific Example 1)
Fig. 3 is a plan view showing a specific example 1 of the unit body 1 according to the first embodiment of the present invention. Fig. 4 is a cross-sectional view of the unit body 1 shown in Fig. 3 taken along line X1-X'1. Figs. 3 and 4 show a specific example in which the heat absorbing/heating part 11 includes a heat absorbing/heating material that absorbs heat upon contraction and generates heat upon expansion. The heat absorbing/heating material in this case is a combination of a nanoporous body 111 such as GMS and a fluid refrigerant such as water or alcohol.

As shown in Figures 3 and 4, a space S for holding the vapor of the fluid refrigerant (hereinafter, refrigerant vapor) 112 is provided within the storage section 13. The refrigerant vapor 112 that is desorbed and vaporized from the pore walls of the pores by applying stress to the nanoporous body 111 is secured in this space S. The storage section 13 is sealed so that the refrigerant vapor 112 does not leak out of the storage section 13. The refrigerant vapor 112 is sealed within the storage section 13.

The pressure inside the storage section 13 is set to approximately the saturated vapor pressure of the refrigerant vapor 112 at room temperature and without the application of stress to cause heat absorption. The nanoporous body 111 used is one in which refrigerant vapor has been adsorbed in an environment of approximately 85% of the saturated vapor pressure at room temperature. For example, when the fluid solvent is methanol, the pressure inside the storage section 13 is set to approximately 20 kPa (abs) at room temperature and without the application of stress to cause heat absorption. The nanoporous body 111 in which methanol vapor has been adsorbed in an environment of approximately 17 kPa (= 20 kPa x 0.85) at room temperature is placed inside the storage section 13.

The operation of the specific example 1 will be described. When stress is applied to the heat absorbing and heat absorbing part 11 through the storage part 13, the pores of the nanoporous body 111 constituting the heat absorbing and heat absorbing part 11 contract, and the fluid refrigerant adsorbed to the pore walls of the nanoporous body 111 is desorbed from the pore walls. When desorbed from the pore walls, the fluid refrigerant vaporizes (i.e., evaporates) and becomes refrigerant vapor 112. The fluid refrigerant absorbs heat by changing its phase from liquid to gaseous in the storage part 13, lowering the temperature of the nanoporous body 111. Since the nanoporous body 111 is in contact with the heat conducting part 12, the temperature of the heat conducting part 12 is lowered. As a result, the extension part 122 of the heat conducting part 12 can exchange heat with the air or the like present outside the storage part 13 by convection or radiation, thereby cooling the air.

When the stress applied to the heat absorbing and heat generating section 11 is released, the pores of the nanoporous body 111 constituting the heat absorbing and heat generating section 11 expand from a contracted state. The refrigerant vapor 112 present in the storage section 13 is adsorbed to the pore walls of the nanoporous body 111 and liquefied. The refrigerant vapor 112 generates heat by changing phase from gas to liquid in the storage section 13, and increases the temperature of the nanoporous body 111. Since the nanoporous body 111 is in contact with the heat conducting section 12, the temperature of the heat conducting section 12 increases. As a result, the extension section 122 of the heat conducting section 12 can exchange heat with the air, etc. present outside the storage section 13 by convection or radiation, and warm the air.

(Specific Example 2)
Fig. 5 is a plan view showing a specific example 2 of the unit body 1 according to the first embodiment of the present invention. Fig. 6 is a cross-sectional view of the unit body 1 shown in Fig. 5 taken along line X2-X'2. Figs. 5 and 6 show a specific example in which the heat absorbing and heat generating part 11 includes a heat absorbing and heat generating material that generates heat upon contraction and absorbs heat upon expansion. The heat absorbing and heat generating material in this case is a solid refrigerant 115 such as an elastic calorific body or a pressure calorific body.

In specific example 2 shown in Figures 5 and 6, as in specific example 1, the storage section 13 is sealed and the solid refrigerant 115 placed in the storage section 13 is isolated from the outside. This prevents contamination of the solid refrigerant 115 and improves its durability. In addition, specific example 2 does not require a fluid refrigerant 112 that repeatedly vaporizes and liquefies, so it is possible to make the space S inside the storage section 13 smaller than in specific example 1. This makes it possible to reduce the size of the unit body 1 including the storage section 13.

The operation of specific example 2 will be described. When stress is applied to the heat absorbing and heat generating section 11 through the housing section 13, the solid refrigerant 115 constituting the heat absorbing and heat generating section 11 contracts, and the molecular structure or molecular arrangement of the solid refrigerant 115 changes. In the solid refrigerant 115, the change in the 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 conducting section 12. As a result, the extension section 122 of the heat conducting section 12 can exchange heat with the air or the like present outside the housing section 13 by convection or radiation, thereby warming the air.

When the stress applied to the heat absorbing and heat generating section 11 is released, the solid refrigerant 115 constituting the heat absorbing and heat generating section 11 expands from its contracted state, and the molecular structure or molecular arrangement of the solid refrigerant 115 undergoes a phase change and returns to its original shape. The solid refrigerant absorbs heat by undergoing a phase change and returning to its original shape, lowering the temperature of the heat conducting section 12. As a result, the extension section 122 of the heat conducting section 12 can exchange heat with the air, etc., present outside the housing section 13 by convection or radiation, thereby cooling the air.

(Effects of the First Embodiment)
The heat exchange unit 100 according to the first embodiment of the present invention includes an elastic heat absorbing and generating part 11, a heat conductive part 12 that is in direct or indirect contact with the heat absorbing and generating part 11 and conducts heat from the heat absorbing and generating part 11, a housing part 13 that houses the heat absorbing and generating part 11 and the heat conductive part 12, and a press mechanism 3 that applies stress to the heat absorbing and generating part 11 housed in the housing part 13 and releases the applied stress. The heat absorbing and generating part 11 has a heat absorbing and generating material that absorbs or generates heat by changing its phase in response to the application and release of stress. The heat conductive part has an extension part that extends from the housing part, and performs heat exchange at the extension part.

The heat exchange unit 100 can exchange heat with a medium (e.g., air) present outside the storage section 13, using the heat absorbing and heating section 11, which absorbs or generates heat by a phase change of the heat absorbing and heating material, as a heat source. In the heat exchange unit 100, the input energy is not the heat input from a heater, but the press load from the press mechanism 3, so the energy consumption efficiency (COP: Coefficient of Performance) can be improved. In addition, the heat exchange unit 100 can be made smaller because it does not require a heater for heat input.

(Modification)
FIG. 7 is a cross-sectional view showing a modified example of the unit body 1 according to the first embodiment of the present invention. As shown in FIG. 7, in this modified example, the contact surface SC between the heat absorbing and heat generating part 11 and the heat conducting part 12 includes at least one of unevenness and curved surface. The unevenness included in the contact surface SC may be linear unevenness in cross-sectional view or curved unevenness. In addition, the unevenness or curved surface included in the contact surface SC may be regular or irregular. The curved surface may be wavy. The contact surface SC including at least one of unevenness and curved surface can be formed, for example, by subjecting the surface 12a of the contact part 121 of the heat conducting part 12 to a roughening treatment by etching, MEMS (Micro Electro Mechanical systems), or cutting processing, and then providing the heat absorbing and heat generating material of the heat absorbing and heat generating part 11 (for example, the nanoporous body 111 or the solid refrigerant 115) on the roughened surface 12a.

According to this modification, the unit body 1 can increase the contact area between the heat absorbing and heat generating part 11 and the heat conducting part 12. This allows the unit body 1 to reduce the thermal resistance between the heat absorbing and heat generating part 11 and the heat conducting part 12 and increase the amount of heat transfer between the heat absorbing and heat generating part 11 and the heat conducting part 12, making it possible to further improve the COP.

<Embodiment 2>
(Configuration example)
Fig. 8 is a three-dimensional schematic diagram showing a first configuration example of the unit body 1A according to the second embodiment of the present invention. Fig. 9 is a three-dimensional schematic diagram showing a second configuration example of the unit body 1A according to the second embodiment of the present invention. Fig. 10 is a three-dimensional schematic diagram showing a third configuration example of the unit body 1A according to the second embodiment of the present invention. The unit body 1A (an example of a "unit" in the present invention) has a plurality of heat conductive parts 12. The heat conductive parts 12 sandwich the heat absorbing and heat generating part 11 from both sides in the thickness direction (e.g., the Z-axis direction).

8, for example, two heat conductive parts 12 sandwich one heat absorbing and generating part 11 from both sides in the Z-axis direction. The two heat conductive parts 12 and one heat absorbing and generating part 11 are housed in one housing part 13. A gap G is provided between one extension part 122 and the other extension part 122 adjacent to each other in the Z-axis direction.
9, the two heat conducting sections 12 may sandwich the two heat absorbing and heat generating sections 11 from both sides in the Z-axis direction. In this case, a metal foil 14 may be provided between the two heat absorbing and heat generating sections 11. The two heat conducting sections 12 and the two heat absorbing and heat generating sections 11 may be accommodated in one accommodation section 13 along with a single sheet of metal foil 14. The metal foil 14 can improve the heat transfer between the two heat absorbing and heat generating sections 11.

As shown in FIG. 10, the heat absorbing and heat generating part 11 sandwiched between the two heat conductive parts 12 may be laminated in multiple layers, and a thin film with excellent thermal conductivity, such as metal foil 14 (an example of the "high thermal conductive foil" of the present invention) may be arranged between the multiple layers. A laminate 15 may be formed in which the heat absorbing and heat generating part 11 and the metal foil 14 are arranged alternately. For example, the heat absorbing and heat generating part 11 is a nanoporous body with a thickness of 100 μm per layer. The metal foil 14 is a copper foil or aluminum foil with a thickness of 20 μm per layer. The thickness of the laminate 15 is about 5 mm, with the heat absorbing and heat generating part 11 and the metal foil 14 being laminated alternately one layer at a time. The high thermal conductive foil is not limited to metal foil. The high thermal conductive foil may be a carbon or engineering plastic sheet as long as it is a foil-like material with good thermal conductivity.

The spacing Gd of the gap G between the extensions 122 is the spacing between the heat exchange fins. By setting this spacing Gd to an optimal length for the expected heat transfer, it is possible to increase the heat transfer efficiency. In the configuration example 3 shown in FIG. 10, the spacing Gd can be set to any value by adjusting the number of layers of the nanoporous body 111 and the metal foil 14. The spacing Gd can be increased by increasing the number of layers of the nanoporous body 111 and the metal foil 14. Even if it is difficult to form the nanoporous body 111 thick, the spacing Gd can be easily adjusted by increasing the number of layers.

Figure 11 is a schematic diagram showing a three-dimensional configuration example of a heat exchange unit 100A according to embodiment 2 of the present invention. As shown in Figure 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.

The press mechanism 3 clamps and fixes the multiple unit bodies 1A between a first clamping body 31 and a second clamping body 32. The press mechanism 3 applies stress to the heat absorbing and generating parts 11 (see, for example, FIGS. 8 to 10 ) of the multiple unit bodies 1A or releases the applied stress by moving the shaft part 33 in the axial direction while maintaining the multiple unit bodies 1A in a fixed state. This allows heat exchange to be performed between the extension part 122 and a medium (for example, air) present outside the storage part 13 in each of the multiple unit bodies 1A.
11, three or more heat conductive parts 12 may be housed in one housing part 13 to constitute one unit body 1A. For example, all the heat conductive parts 12 shown in FIG. 10 may be disposed in one housing part 13 to constitute one unit body 1A.

(Effects of the Second Embodiment)
The unit body 1A according to the second embodiment of the present invention includes a plurality of heat conductive parts 12. In the unit body 1A, both sides of the heat absorbing and heat generating parts 11 are in direct or indirect contact with the heat conductive parts 12. This allows the unit body 1A to increase the contact area between the heat absorbing and heat generating parts 11 and the heat conductive parts 12 compared to the unit body 1 according to the first embodiment. The unit body 1A can reduce the thermal resistance between the heat absorbing and heat generating parts 11 and the heat conductive parts 12 and can increase the amount of heat transfer between the heat absorbing and heat generating parts 11 and the heat conductive parts 12, thereby making it possible to further improve the COP.

(Modification)
12 is a cross-sectional view showing a modified example of the unit body 1A according to the second embodiment 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, for example, made of an elastic metal fin. One end 161 of the spacer 16 is fixed to one extension portion 122 by brazing, welding, or the like. The other end 162 of the spacer 16 is in contact with the other extension portion 122 but is not fixed thereto. The end 162 of the spacer 16 can move while sliding (i.e., slide) 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).

According to this modification, when stress is applied to the heat absorbing and heat absorbing portion 11 (see FIGS. 8 to 10) by the press mechanism 3 (see FIG. 11), the spacer 16 ensures the gap G. Because the gap G is ensured, the extension portion 122 can maintain high heat transfer performance. In addition, the end portion 162 of the spacer 16 can slide on the surface of the extension portion 122 when subjected to the above-mentioned stress, so that the force applied to the extension portion 122 can be alleviated and distortion of the extension portion 122 can be suppressed. In addition, because the spacer 16 is made of metal, the heat transfer area increases by the amount of its surface area.
In this modification, the spacer 16 is not limited to a metal fin. The spacer 16 may be made of resin and may not be fin-shaped. Even in such a case, the spacer 16 contributes to ensuring the gap G.

<Embodiment 3>
Fig. 13 is a three-dimensional schematic diagram showing a configuration example of a heat exchanger 200 according to embodiment 3 of the present invention. As shown in Fig. 13, the heat exchanger 200 includes the heat exchanger unit 100A described in embodiment 2 (or the heat exchanger unit 100 described in embodiment 1) and an air guide passage 150 (an example of a "medium flow passage" of the present invention) through which air flows. The air guide passage 150 may be referred to as a duct. An extension portion 122 is disposed in the air guide passage 150.
According to this, the heat exchange device 200 can send air to the extension portion 122, and can efficiently exchange heat between the extension portion 122 and the air. The heat exchange device 200 can obtain cold air or hot air with high efficiency.

<Application Examples>
The heat exchange unit 100 shown in Fig. 1, the heat exchange unit 100A shown in Fig. 11, and the heat exchange device 200 shown in Fig. 13 can be applied to an air conditioner mounted on a vehicle, etc. Also, the heat exchange units 100, 100A, and the heat exchange device 200 may be applied to an air conditioner mounted on a device other than a vehicle, or may be applied to a device other than an air conditioner.

1, 1A...Unit body, 3...Press mechanism, 11...Heat absorbing/heat generating section, 12...Heat conducting section, 12a...Front surface, 12b...Back surface, 13...Storage section, 14...Metal foil (an example of a highly heat conductive foil), 15...Laminate, 16...Spacer, 31...First clamp, 32...Second clamp, 33...Axis, 34...Support section, 100, 100A...Heat exchange unit, 111...Nanoporous body, 112...Fluid refrigerant (refrigerant vapor), 115...Solid refrigerant, 121...Contact section, 122...Extension section, 150...Air conduction passage, 161, 162...End, 200...Heat exchange device, G...Gap, Gd...Spacing, S...Space, SC...Contact surface

Claims (14)

An elastic heat absorbing and heating part;
A heat conductive part that is in direct or indirect contact with the heat absorbing and heat absorbing part and that conducts heat from the heat absorbing and heat absorbing part;
a housing portion that houses the heat absorbing and heat conducting portion;
a press mechanism that applies stress to the heat absorbing and heat generating part accommodated in the accommodation part from outside the accommodation part and releases the stress,
The heat absorbing and heating part is
a heat absorbing/heat generating material that absorbs or generates heat by undergoing a phase change in response to application and release of the stress;
The heat conductive portion is
The heat exchanger has an extension portion extending from the housing portion, and performs heat exchange at the extension portion.
The heat conductive portion is plate-shaped,
The heat absorbing and heating portion is formed in a layer shape on the plate-shaped heat conductive portion,
The press mechanism performs an operation of applying the stress and an operation of releasing the stress along a thickness direction of the plate-shaped heat conducting portion and the layer-shaped heat absorbing and heat absorbing portion. The heat exchange device according to claim 1, wherein the heat absorbing and exothermic material is a fluid refrigerant that changes from a liquid phase to a gas phase when the stress is applied and absorbs heat, and changes from a gas phase to a liquid phase and generates heat when the stress is released. The heat absorbing and heating part further has a nanoporous body,
The fluid refrigerant is
The heat exchange device according to claim 2 , wherein the material evaporates from the pore walls of the nanoporous body when the stress is applied, and is adsorbed onto the pore walls when the stress is released. The heat exchange device according to claim 1, wherein the heat absorbing and exothermic material is a solid refrigerant. An elastic heat absorbing and heating part;
A heat conductive part that is in direct or indirect contact with the heat absorbing and heat absorbing part and that conducts heat from the heat absorbing and heat absorbing part;
a housing portion that houses the heat absorbing and heat conducting portion;
a press mechanism that applies stress to the heat absorbing and heat generating part accommodated in the accommodation part and releases the stress;
The heat absorbing and heating part is
a heat absorbing/heat generating material that absorbs or generates heat by undergoing a phase change in response to application and release of the stress;
The heat conductive portion is
The heat exchanger has an extension portion extending from the housing portion, and performs heat exchange at the extension portion.
The heat absorbing and heating portion is laminated in a plurality of layers,
The heat exchange device further comprising a high thermal conductivity foil disposed between the plurality of layers. The heat exchange device according to any one of claims 1 to 5, wherein the heat absorbing and exothermic material is sealed in the housing. The heat exchange device according to any one of claims 1 to 6, wherein the contact surface between the heat absorbing and heat conducting part includes irregularities. The heat exchange device according to any one of claims 1 to 7, wherein the contact surface between the heat absorbing and heat conducting part includes a curved surface. The heat exchange device according to any one of claims 1 to 8, wherein the heat conducting portion sandwiches the heat absorbing and heating portion from both sides in one direction. The heat exchange device according to claim 9, wherein a gap is provided between one of the extensions and the other of the extensions adjacent to each other in the one direction. An elastic heat absorbing and heating part;
A heat conductive part that is in direct or indirect contact with the heat absorbing and heat absorbing part and that conducts heat from the heat absorbing and heat absorbing part;
a housing portion that houses the heat absorbing and heat conducting portion;
a press mechanism that applies stress to the heat absorbing and heat generating part accommodated in the accommodation part and releases the stress;
The heat absorbing and heating part is
a heat absorbing/heat generating material that absorbs or generates heat by undergoing a phase change in response to application and release of the stress;
The heat conductive portion is
The heat exchanger has an extension portion extending from the housing portion, and performs heat exchange at the extension portion.
The heat conducting portion sandwiches the heat absorbing and heat absorbing portion from both sides in one direction,
A gap is provided between one of the extension portions and the other of the extension portions adjacent to each other in the one direction,
The heat exchange device further comprising a spacer disposed in the gap. The heat exchange device according to claim 11, wherein the spacer is elastic. The heat absorbing and heat conducting unit includes a plurality of units,
13. The heat exchange device according to claim 1, wherein a plurality of the units are arranged in a stack. A medium flow path through which the medium flows,
The heat exchange device according to claim 1 , wherein the extension portion is disposed within the medium flow path.

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