Temperature equalizing, heat storing and temperature controlling device

Abstract

A uniform-temperature heat storage temperature control device is provided with a shell which is used for being in direct contact with a heat source and can conduct heat, a sealed space is arranged in the shell, a heat storage area and a uniform-temperature area are arranged in the sealed space and make contact with each other, the uniform-temperature area is a vacuum cavity which can be filled with a gas-liquid phase change working medium, and a wick is arranged on the inner surface of the vacuum cavity. The periphery of the vacuum cavity is coated with a heat storage area, and the heat storage area is a sealing cavity capable of being filled with a solid-solid phase change working medium or a solid-liquid phase change working medium. The uniform temperature area and the heat storage area are compounded and integrated, heat can uniformly reach the uniform temperature area and be stored through acceleration of heat expansion of the uniform temperature area, the heat conductivity is improved, a heat source can be rapidly cooled, and the instantaneous temperature control effect of the heat storage device is improved under the condition that the size of the control device is not changed.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, specifically to a uniform temperature storage and temperature control device. Background Technology

[0002] For short-term or intermittently operating equipment, such as periodic devices used in aviation, power systems, and other cooling applications, the lack of a heat dissipation path or insufficient heat dissipation due to surface aerodynamic heating during operation necessitates the use of phase change modules to absorb the heat stored in the equipment, thus solving the overheating problem. Some equipment on satellites requires thermal control and insulation; phase change energy storage modules store heat at high temperatures and release it at low temperatures to protect the equipment, saving on active protection devices such as electric heating films. The size and weight of equipment used in aviation affect its operational capabilities, often making traditional cooling methods such as forced air cooling or liquid cooling unsuitable, thus limiting the use of heat dissipation methods. Thermal storage and temperature control modules are passive devices, simple, reliable, lightweight, and small in size, making them the best solution for such problems.

[0003] Phase change materials (PCMs) are key components of thermal storage and temperature control modules. They utilize the principle that during phase transitions, PCMs absorb or release a large amount of latent heat while maintaining a relatively constant temperature, thus achieving heat storage and release. PCMs offer high heat storage capacity, are lightweight, and have stable performance, exhibiting superior temperature control and weight reduction compared to traditional metal materials. Currently, commonly used PCMs are solid-solid and solid-liquid PCMs, with paraffin wax as their main component. Paraffin wax has advantages such as high latent heat of phase change, a wide phase change temperature range, and low price. However, its low thermal conductivity and slow heat transfer rate also affect the actual temperature control effect of the thermal storage device. Utility Model Content

[0004] To solve the above technical problems, a uniform temperature storage and control device is provided, which has a high heat conduction speed and good heat storage effect.

[0005] To achieve the above technical objectives, the adopted technical solution is as follows: a uniform temperature storage and temperature control device, which is provided with a shell for direct contact with a heat source and capable of conducting heat. A sealed space is provided inside the shell. The sealed space is provided with a heat storage zone and a uniform temperature zone. The heat storage zone and the uniform temperature zone are arranged in contact with each other. The uniform temperature zone is a vacuum cavity that can be filled with a gas-liquid phase change working medium and has a liquid-absorbing core on its inner surface. The vacuum cavity is surrounded by the heat storage zone, which is a sealed cavity that can be filled with a solid-solid phase change working medium or a solid-liquid phase change working medium.

[0006] The heat storage area described in this invention is the remaining area of ​​the sealed space excluding the temperature equalization zone.

[0007] The shell of this utility model is provided with an injection port for injecting solid-solid phase change working fluid or solid-liquid phase change working fluid into the heat storage area. Before injection, the sealed space can be evacuated, and after injection, it can be sealed by a sealing element.

[0008] The vacuum cavity described in this invention has a radial structure.

[0009] The heat storage zone described in this utility model consists of multiple heat pipes, which are evenly distributed within a sealed space.

[0010] The sealed space described in this utility model is further provided with a heat dissipation zone adjacent to the heat storage zone and the temperature equalization zone, and the heat dissipation zone is provided with an air cooling device or a liquid cooling device.

[0011] The sealed space described in this utility model is provided with a partition, which includes a first surface facing a first direction and a second surface facing a second direction, wherein the first direction and the second direction are opposite. The heat storage area and the temperature equalization area are arranged on the first surface of the partition, and the heat dissipation area is arranged in the area enclosed by the second surface of the partition and the shell.

[0012] The liquid cooling device described in this utility model is laid on the second surface.

[0013] The vacuum chamber described in this invention is provided with a first heat dissipation fin.

[0014] The sealed cavity of this utility model is provided with a second heat dissipation fin.

[0015] The beneficial effects of this utility model are:

[0016] 1. By integrating the uniform temperature zone and the heat storage zone into one unit, the heat can be accelerated through the uniform temperature zone, allowing the heat to be evenly distributed and stored within the uniform temperature zone, thereby improving thermal conductivity and enabling rapid cooling of the heat source. This enhances the instantaneous temperature control effect of the heat storage device without changing the volume of the control device.

[0017] 2. The thermal storage area can be directly formed by installing the temperature equalization zone, which reduces the contact thermal resistance. The temperature equalization zone can be processed into different structural shapes according to different needs, and the shape of the thermal storage area is not limited.

[0018] 3. By arranging the vacuum cavity of the uniform temperature zone into a radial structure, heat can be quickly and evenly transferred to the surrounding heat storage zone in a point-to-surface manner.

[0019] 4. The uniform temperature zone is achieved using heat pipes, which is convenient, quick, and easy to install. It can also achieve the same effect of rapidly transferring heat to the heat storage zone, resulting in high heat transfer efficiency.

[0020] 5. To further improve the temperature control effect, a heat dissipation zone can be added, and long-term temperature control can be achieved by using air cooling or liquid cooling. The liquid cooling device is attached to the partition and can directly contact the uniform temperature zone and heat dissipation zone, enabling short-term and instantaneous heat dissipation. In addition, it can realize the continuous heat dissipation function of the uniform temperature heat storage device.

[0021] 6. To enable rapid prototyping of independent heat dissipation zones, the sealed space is divided into two independent areas: one is the area containing the heat storage zone and the uniform temperature zone, and the other is the heat dissipation zone. This results in rapid prototyping and low heat resistance.

[0022] 7. By adding a first heat dissipation fin inside the vacuum chamber, heat transfer can be accelerated, while the second heat dissipation fin inside the sealed chamber can store and transfer heat, and also prevent the shell from deforming due to excessive pressure in the heat storage area. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the present invention;

[0024] Figure 2 This is a side view of the present invention;

[0025] Figure 3 This is a longitudinal section sectional view of the present invention;

[0026] Figure 4 This is a schematic diagram of the liquid cooling device of this utility model;

[0027] Figure 5 This is a schematic diagram of the radioactive structure vacuum cavity of this utility model;

[0028] Figure 6 This is a schematic diagram of the heat pipe type heat exchange zone of this utility model;

[0029] In the figure: 1. Shell, 101. Filling port, 102. Bottom plate, 103. Cover plate, 104. Sealed space, 2. Heat storage area, 3. Temperature equalization area, 4. Heat pipe, 5. Heat dissipation area, 6. Partition, 601. First side, 602. Second side, 7. First heat dissipation fin, 8. Second heat dissipation fin. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0031] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0032] The structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0033] The orientations or positional relationships indicated by terms such as "up," "down," "left," "right," "middle," "longitudinal," "lateral," "horizontal," "inner," "outer," "radial," and "circumferential" in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0034] like Figure 1 , Figure 5 , Figure 6As shown, a uniform temperature storage and control device includes a shell 1 that is thermally conductive and in direct contact with a heat source. The shape of the shell is not limited, and it is generally made of metal, such as copper, aluminum, or titanium alloy; it can also be made of a non-metallic material with high thermal conductivity. For ease of assembly, the shell 1 can be configured as a structure where a base plate 102 and a cover plate 103 are fitted together and sealed. Depending on the internal structure and additional structures, the cover plate can be made into an upper cover plate and a lower cover plate. The base plate 102 and the cover plate 103 are connected by welding, bonding, or screw splicing. A sealed space 104 is provided inside the shell 1, containing a heat storage zone 2 and a uniform temperature zone 3. The heat storage zone 2 and the uniform temperature zone 3 are in contact with each other, and their contact facilitates heat transfer. The heat storage zone 3 utilizes a phase change material to absorb heat and liquefy, storing the heat for heat dissipation. The uniform temperature zone 3 is used to rapidly and uniformly diffuse heat, solving the problem of low thermal conductivity of single-phase change materials. The isothermal zone 3 is arranged across the entire sealed space in the cross-sectional direction. This isothermal zone 3 is a vacuum chamber filled with a gas-liquid phase change working fluid and has a liquid-absorbing core on its inner surface. The principle of the vacuum chamber is the same as that of the VC vacuum chamber isothermal plate. It has an outer shell capable of being evacuated, and the inner wall of the shell has a liquid-absorbing core (microstructure, such as capillary suction, wire mesh, etc.). The hollow part is evacuated and filled with the gas-liquid phase change material. The microstructure contains a liquid working fluid, which is used for heat conduction through boiling and vaporization. The capillary force generated during boiling is used to return the cooled working fluid to the heat source. The vacuum chamber is an isothermal zone that efficiently transfers heat. The gas-liquid phase change working fluid can be water, methanol, ethanol, or acetone. The vacuum chamber is surrounded by a heat storage zone 2, which is a sealed cavity filled with a solid-solid or solid-liquid phase change working fluid. The solid-solid or solid-liquid phase change working fluid can be paraffin wax, liquid metal, etc. The heat storage zone 2 can be directly injected into the periphery of the uniform temperature zone 3, or similarly, a channel for filling the uniform heat storage zone can be set up in the outer shell so that the channel is in contact with the uniform temperature zone.

[0035] like Figure 1 As shown, the heat storage area 2 is the remaining area of ​​the sealed space 104 other than the temperature equalization area 3. After the heat storage area 2 is set up, solid-solid phase change working fluid or solid-liquid phase change working fluid can be poured into the area between the heat storage area 2 and the shell 1 to form the heat storage area 2. This form has a simple structure and is easy to form. It is integrally formed by utilizing the structure of the shell itself, and it can reduce the obstruction between the heat storage area 2 and the temperature equalization area 3, reduce the intermediate contact thermal resistance, and has a small volume, so that the temperature equalization area 3 can quickly transfer heat to the heat storage area 2, and the thermal conduction speed is fast.

[0036] like Figure 2As shown, when injecting phase change material into the sealed space 104 to form a heat storage area, an injection port 101 for injecting solid-solid phase change working medium or solid-liquid phase change working medium into the heat storage area 2 can be provided on the shell 1. Before injection, the sealed space 104 can be evacuated to ensure that the phase change material can be fully injected. After injection, it is sealed by a sealing component. The injection port can be sealed by plugs, sealing rings, welding, etc. to ensure that the phase change material will not leak.

[0037] like Figure 5 As shown, the vacuum cavity has a radial structure.

[0038] like Figure 6 As shown, the heat storage zone 2 consists of multiple heat pipes 4, which are evenly distributed within the sealed space 104. A heat pipe is a heat transfer device with excellent thermal conductivity that utilizes a gas-liquid phase change working medium enclosed within the pipe to repeatedly undergo physical phase changes or chemical reactions to transfer heat. The heat pipe is filled with a gas-liquid phase change working medium, typically water or acetone; the heat pipe wall is attached with a wick composed of a capillary porous material. When one end of the heat pipe is heated, the liquid in the capillary rapidly evaporates, and the vapor flows to the other end under a small pressure difference, releasing heat and re-condensing into liquid. The liquid then flows back to the evaporation section along the porous material due to capillary force, and this cycle continues. The heat pipe can be fixed to the base plate by bonding, welding, or adhesive bonding. The shape of the heat pipe can be diversified, and different heat pipe arrangements can form different temperature homogeneous zones 3 within the shell cavity to meet different heat dissipation and heat homogenization requirements. The heat pipe is a commercially available product that can be directly installed, making it more convenient to use.

[0039] The sealed space 104 also includes a heat dissipation zone 5 adjacent to the heat storage zone 2 and the temperature equalization zone 3. The heat dissipation zone 5 is equipped with an air-cooling device or a liquid-cooling device. The heat dissipation zone 5 can directly contact the heat storage zone 2 and the temperature equalization zone 3 for heat dissipation or can dissipate heat through indirect contact. The heat dissipation zone 5 rapidly transfers the heat stored in the heat storage zone 2, improving the instantaneous and short-term heat dissipation capacity of the phase change heat storage plate.

[0040] like Figure 3 As shown, a partition 6 is provided in the sealed space 104, which divides the sealed space into two independent closed areas. One of the closed areas can be set as a temperature equalization zone 3 and a heat storage zone 3 in various ways described above, and the other closed area can be used to set a heat dissipation zone 5. By adding the partition 6, the zones can be adjacent or combined without affecting their functions, enabling rapid molding and assembly of each zone. The partition 6 includes a first surface 601 facing a first direction and a second surface 602 facing a second direction. The first direction and the second direction are opposite, for example, they are vertically opposite. When the first surface is above, the second surface is below, and when the first surface is below, the second surface is above. The heat storage zone 2 and the temperature equalization zone 3 are set on the first surface 601 of the partition 6, and the heat dissipation zone 5 is set in the area enclosed by the second surface 602 of the partition 6 and the shell 1.

[0041] like Figure 4 As shown, the liquid cooling device is laid on the second surface 602, and the laying method can be as follows: Figure 4 The bent arrangement shown allows for close contact and compaction with the homogenizing zone 3 and heat storage zone 2 on the first surface. The liquid cooling medium enters the channel through one end, and through liquid flow, conducts heat from the device into the medium. The medium then flows out through the outlet at the other end of the channel, carrying away the heat. The heat dissipation zone can work synergistically with the phase change heat storage zone and the vacuum homogenizing zone. The heat-generating device (heat source) is attached to the shell (closer to the side of the heat storage zone and homogenizing zone), transferring heat to them. The liquid-cooled heat dissipation zone can then transfer heat from the heat storage zone and homogenizing zone to the flowing medium of the liquid cooling device through the partition 6, ultimately carrying away the heat and achieving short-term, instantaneous heat dissipation.

[0042] Figure 1 As shown, a first heat dissipation fin 7 is provided inside the vacuum cavity. The shape of the first heat dissipation fin can be cylindrical, mesh, filament, etc., to help the temperature equalization zone 3 conduct heat quickly and transfer the heat generated by the heat source to the heat storage zone 2 evenly and quickly.

[0043] like Figure 5 As shown, a second heat dissipation rib 8 is provided inside the sealed cavity. The shape of the second heat dissipation rib can be columnar, mesh, filament, etc. This structure is generally set on the inner surface of the shell 1. It not only plays the role of heat storage and heat dissipation, but also plays the role of reinforcing rib when the pressure inside the sealed cavity is too high, preventing the shell from deforming, bulging, or leaking.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit or restrict the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection declared by the present invention.

Claims

1. A temperature control device for uniform heat storage, which is provided with a heat-conducting casing (1) for direct contact with a heat source, and a sealed space (104) is arranged in the casing (1), characterized in that: The sealed space (104) is provided with a heat storage area (2) and a temperature equalization area (3), the heat storage area (2) and the temperature equalization area (3) are arranged in contact with each other, the temperature equalization area (3) is a vacuum cavity capable of filling gas-liquid phase change working medium and provided with a liquid absorbing core on the inner surface of the cavity, the periphery of the vacuum cavity is covered with the heat storage area (2), and the heat storage area (2) is a sealed cavity capable of filling solid-solid phase change working medium or solid-liquid phase change working medium.

2. The uniform temperature heat storage temperature control device of claim 1, wherein: The heat storage area (2) is the remaining area of the sealed space (104) except the temperature equalization area (3).

3. The uniform temperature heat storage temperature control device of claim 2, wherein: The shell (1) is provided with a pouring port (101) for pouring the solid-solid phase change working medium or the solid-liquid phase change working medium into the heat storage area (2), the sealed space (104) can be vacuumized before pouring, and the pouring port is blocked by a sealing element after pouring.

4. The uniform temperature heat storage temperature control device of claim 1, wherein: The vacuum cavity has a radial structure.

5. The uniform heat storage temperature control device of claim 1, wherein: The heat storage area (2) is composed of a plurality of heat pipes (4), and the plurality of heat pipes (4) are uniformly distributed in the sealed space (104).

6. The uniform temperature heat storage temperature control device of claim 1, wherein: The sealed space (104) is further provided with a heat dissipation area (5) adjacent to the heat storage area (2) and the temperature equalization area (3), and the heat dissipation area (5) is provided with an air cooling device or a liquid cooling device.

7. The uniform temperature heat storage temperature control device of claim 6, wherein: The sealed space (104) is provided with a partition plate (6), the partition plate (6) includes a first surface (601) facing a first direction and a second surface (602) facing a second direction, the first direction and the second direction are opposite, the heat storage area (2) and the temperature equalization area (3) are arranged on the first surface (601) of the partition plate (6), and the heat dissipation area (5) is arranged in a region surrounded by the second surface (602) of the partition plate (6) and the shell (1).

8. The uniform temperature heat storage temperature control device of claim 7, wherein: The liquid cooling device is arranged on the second surface (602).

9. The uniform temperature heat storage temperature control device of claim 1, wherein: The vacuum cavity is provided with a first heat dissipation rib (7).

10. The uniform temperature heat storage temperature control device of claim 1, wherein: The sealed cavity is provided with a second heat dissipation rib (8).

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