CN210900189U - Cooling device for liquid cooling heat dissipation phase change heat storage - Google Patents
Cooling device for liquid cooling heat dissipation phase change heat storage Download PDFInfo
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- CN210900189U CN210900189U CN201922228654.0U CN201922228654U CN210900189U CN 210900189 U CN210900189 U CN 210900189U CN 201922228654 U CN201922228654 U CN 201922228654U CN 210900189 U CN210900189 U CN 210900189U
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Abstract
The utility model discloses a cooling device of liquid cooling heat dissipation phase transition heat-retaining, include: the cooling bottom plate is provided with a liquid cooling runner and a phase change energy storage mounting groove, and the liquid cooling runner and the phase change energy storage holding tank are arranged in the same plane; the liquid cooling flow channel is provided with a first inlet end and a first outlet end, and cooling liquid is filled in the liquid cooling flow channel; the phase change energy storage module is arranged in the phase change energy storage mounting groove; the liquid cooling runner cover plate covers the liquid cooling runner; and the liquid cooling circulating power module is communicated with the liquid cooling runner, so that cooling liquid can circularly flow in the liquid cooling runner. The utility model provides a cooling device combines together liquid cooling and phase transition heat-retaining, can reduce electron device's temperature fast, and the heat-retaining volume is big, and is with strong points, has small, light in weight, the leakproofness is good, long service life's advantage simultaneously.
Description
Technical Field
The utility model relates to a cooling device technical field, concretely relates to cooling device based on liquid cooling heat dissipation and phase transition heat-retaining.
Background
The working temperature range of the electronic equipment of the spacecraft is-16 to 60 ℃, if the electronic equipment works in a higher temperature environment for a long time, the electronic equipment can be caused to lose efficacy, and the service life is shortened. Therefore, the rapid cooling when the ambient temperature is high is of great significance to the stable operation of the electronic equipment.
In the prior art, the energy storage and heat dissipation structure with pure sensible heat has large weight, and the temperature is continuously increased in the use process; the pure liquid cooling structure has the same volume and small mass, but the energy storage density is low; the energy storage heat dissipation structure made of pure phase change materials is relatively heavy in weight, and the three heat dissipation structures cannot meet the requirements of rapid cooling and long service life when facing the problem of uneven heating of electronic equipment.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's defect, provide a cooling device based on liquid cooling heat dissipation and phase change material heat-retaining for solve among the prior art problem that electron device cooling device effect is not good, weight is big.
The utility model provides a cooling device of liquid cooling heat dissipation phase transition heat-retaining, it includes:
the cooling bottom plate is provided with a liquid cooling runner and a phase change energy storage mounting groove, and the liquid cooling runner and the phase change energy storage mounting groove are arranged in the same plane; the liquid cooling flow channel is provided with a first inlet end and a first outlet end, and cooling liquid is filled in the liquid cooling flow channel; the phase change energy storage module is arranged in the phase change energy storage mounting groove; the liquid cooling runner cover plate covers the liquid cooling runner; and the liquid cooling circulating power module is communicated with the liquid cooling runner, so that cooling liquid can circularly flow in the liquid cooling runner.
Further, the phase change energy storage module comprises a shell and a phase change energy storage material packaged in the shell.
Further, the phase change energy storage material is a solid-solid phase change energy storage material.
Further, the solid-solid phase change energy storage material is inorganic hydrated salt.
Further, the shell is made of red copper and is prepared and formed by a drawing process.
Further, the liquid cooling flow channel is U-shaped, S-shaped or snakelike.
Further, the liquid cooling circulation power module comprises a cooling liquid storage box and a pump body, the liquid cooling circulation power module is provided with a second inlet end and a second outlet end, the second outlet end is connected with the first inlet end of the liquid cooling runner, the second inlet end is connected with the first outlet end of the liquid cooling runner, and cooling liquid circulates in the liquid cooling runner and the cooling liquid storage box through power of the pump body.
Further, the material of the cooling bottom plate is aluminum alloy or titanium alloy.
Further, the liquid cooling runner and the phase change energy storage mounting groove are formed by CNC (computer numerical control) machining and/or wire cutting.
The utility model provides a cooling device of liquid cooling heat dissipation phase transition heat-retaining combines together liquid cooling heat dissipation and phase transition heat-retaining, can reduce electron device's temperature fast and can store a large amount of heats, and simultaneously, this cooling device is small, and light in weight adopts the laser welding leakproofness good, and solid-solid phase change energy storage material thermal expansion rate is low, difficult emergence leakage, long service life. And the user can carry out flexible configuration to liquid cooling and phase change energy storage according to the height of the heating density of the electronic element, and the pertinence is strong.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Fig. 1 is a schematic perspective exploded view of a cooling device according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a cooling device according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 and fig. 2, a liquid-cooled heat dissipation phase-change heat storage cooling device includes a cooling bottom plate 1, a phase-change energy storage module 4, a liquid-cooled runner cover plate 5, and a liquid-cooled circulation power module 6. The cooling bottom plate is provided with a liquid cooling runner 2 and a phase change energy storage mounting groove 3 which are arranged in the same plane; the liquid cooling flow path 2 has a first inlet end 21 and a first outlet end 22, and the liquid cooling flow path 2 is filled with a cooling liquid. The phase change energy storage module 4 is arranged in the phase change energy storage mounting groove 3 on the cooling bottom plate 1; the liquid cooling runner cover plate 5 covers the liquid cooling runner 2. The liquid cooling circulation power module 6 is communicated with the liquid cooling runner 2, so that cooling liquid can circularly flow in the liquid cooling runner 2.
As shown in fig. 1, the cooling floor 1 is made of a hard and light metal material, and may be made of, for example, an aluminum alloy or a titanium alloy, preferably a 2a12 aluminum alloy, which has good overall performance, high strength, certain heat resistance, and good workability after cold hardening. A liquid cooling runner 2 and a phase change energy storage mounting groove 3 are formed in the cooling bottom plate 1 and are arranged in the same plane, and compared with the stacking arrangement, the arrangement method reduces the thickness of the cooling device and facilitates installation and use in a limited space. According to the needs of practical application, the technical personnel in the field can determine the number of the phase change energy storage modules 4 and the arrangement relation between the phase change energy storage modules and the liquid cooling flow channel 2 by themselves, the number of the phase change energy storage modules 4 can be one or multiple, and when the number of the phase change energy storage modules 4 is multiple, the phase change energy storage modules are preferably and uniformly distributed around the liquid cooling flow channel 2 so as to ensure good heat dissipation effect. The liquid cooling runner 2 and the phase change energy storage mounting groove 3 are formed on the metal substrate by numerical control or linear cutting, so that the dimensional accuracy is ensured. The liquid cooling flow channel 2 can be arranged in a snake shape, an S shape, a U shape or other shapes with larger flow channel volume so as to ensure the liquid cooling heat dissipation efficiency.
The liquid cooling runner cover plate 5 covers the liquid cooling runner 2, so that the liquid cooling runner 2 forms a closed space. The liquid cooling flow path cover plate 5 is adapted to the liquid cooling flow path 2 in shape, and the liquid cooling flow path cover plate and the liquid cooling flow path 2 are made of the same material and sealed by laser welding at the joint.
The phase change energy storage module 4 comprises a shell and a phase change energy storage material packaged in the shell. The shell is a hollow columnar structure, and end covers are arranged at two ends of the shell. The shell is made of metal material, preferably red copper with high thermal conductivity, and is prepared and molded through a drawing process. The phase change energy storage material encapsulated in the shell can be a solid-liquid phase change energy storage material or a solid-solid phase change energy storage material, and preferably is a solid-solid phase change energy storage material, because the solid-solid phase change energy storage material has low thermal expansion rate, the volume change is small when the phase change occurs under the high temperature condition, and the leakage is not easy to occur. The solid-solid phase change energy storage material can be polyalcohol, paraffin, polyethylene, inorganic hydrated salt and the like, preferably inorganic hydrated salt, and has the advantages of high phase change temperature and large heat storage capacity. In addition, the person skilled in the art can also adopt a plurality of phase change energy storage materials to be mixed for use as required to control the phase change temperature. The material of the end cover is the same as that of the shell, and the joint of the shell and the end cover is sealed by laser welding. The phase change energy storage module 4 is fixed in the phase change energy storage mounting groove by using a fastener, which may be a bolt.
The liquid cooling circulation power module 6 is used for enabling cooling liquid to circularly flow in the liquid cooling runner 2. The fluid-cooled circulation power module 6 includes a coolant reservoir and pump body (not shown) having a second inlet port 61 and a second outlet port 62, the second inlet port 61 being connected to the first outlet port 22 of the fluid-cooled flow path 2, and the second outlet port 62 being connected to the first inlet port 21 of the fluid-cooled flow path 2. Therefore, the liquid cooling circulation power module 6 and the liquid cooling runner 2 form a closed circulation cooling system, under the action of the pump body, cooling liquid flows into the liquid cooling runner from the second outlet end 62 and the first inlet end 21 and absorbs heat, and the heated cooling liquid flows into the cooling liquid storage tank from the first outlet end 22 and the second inlet end 61 to exchange heat with the cooling liquid in the cooling liquid storage tank and cool the cooling liquid, so that the cooling liquid circulates in a reciprocating manner. In an embodiment of the present invention, the cooling liquid is an antifreeze.
The utility model provides a cooling device has included the structure of liquid cooling heat dissipation and phase transition heat-retaining simultaneously, because the radiating speed of liquid cooling circulation is very fast, can have corresponding with the liquid cooling runner distribution in the high electronic component region of density of generating heat to reach the purpose that the corresponding regional temperature of effective control rises.
The following description is about the manufacturing method of the cooling device provided by the present invention, which specifically includes the following steps:
and S1, processing a liquid cold runner 2 and a phase change energy storage mounting groove 3 on the metal substrate to obtain the cooling bottom plate 1.
S2, manufacturing a red copper shell by adopting a drawing process, filling a phase change energy storage material into the red copper shell after one end of the red copper shell is welded and sealed with one end cover, then manufacturing a phase change energy storage module 4 by welding and sealing the other end of the red copper shell with the other end cover, and then installing the phase change energy storage module 4 in the phase change energy storage installation groove 3 through a fastening piece.
In the step (2), the filling modes of the phase change energy storage materials with different forms and different materials are different, for example, the block-shaped solid-solid phase change energy storage material formed by pressing needs to be filled in a mode of firstly vacuumizing the shell and then pressing by using air pressure difference, so that the phase change energy storage material and the shell basically have no gap, and the phase change energy storage material with a liquid state or a shape without fixation can be directly filled.
S3, covering the liquid cooling runner cover plate 5 on the liquid cooling runner 2, and welding the joint by laser;
and S4, connecting the liquid cooling circulating power module with the liquid cooling runner to finish the preparation.
In step S2, in order to ensure the sealing performance of the phase change energy storage module 4, the phase change energy storage module 4 may be placed in a high temperature environment (e.g., a high temperature box at 80 ℃) after being prepared for testing to detect whether the welding seam has a leakage phenomenon. And after no leakage is detected, the phase change energy storage module 3 is installed in the phase change energy storage installation groove 3.
Further, in order to ensure the sealing performance of the liquid cooling flow passage 2, after the step S3 is completed, a gas pressure leakage experiment may be performed on the liquid cooling flow passage 2 to determine whether there is a leakage in the liquid cooling flow passage. After the leakage condition is determined through experiments, the step S4 is carried out. For example, the liquid cooling channel is pressurized at 2.5MPa and then kept for 30min, and if the pressure is not changed, the sealing is good.
The embodiment of the utility model provides an in, the implementation of S4 step not only can be so that the purpose of cooling liquid in order to reach reduction electronic equipment temperature at liquid cooling runner 2 and liquid cooling circulation power module 6 inner loop, and whether the junction that can also detect liquid cooling circulation power module 6 and liquid cooling runner 2 through the test run of liquid cooling circulation has the leakage.
The utility model provides a cooling device is including heat-retaining and exothermic two stages in the course of the work, specifically as follows:
a heat storage stage: the heat-retaining stage is when electronic equipment releases heat in a large number, and the cooling bottom plate can absorb the phase change energy storage material of heat transfer to in the phase change energy storage module through the heat conduction mode, and phase change energy storage material absorbs the heat through sensible heat, begins to take place the phase transition when rising temperature and reaching the phase transition point, because phase change material has higher phase transition enthalpy, so latent heat can absorb a large amount of heats. Meanwhile, the liquid cooling runner is arranged in the area with higher heat dissipation density of the electronic element and is filled with cooling liquid, the heat dissipated by the electronic element can be transferred to the cooling liquid in the liquid cooling runner, the cooling liquid absorbs the heat through sensible heat, the pump body drives the cooling liquid to circulate so as to bring the high-temperature liquid in the liquid cooling runner into the cooling liquid storage box, so that the low-temperature liquid in the storage box continues to fill the liquid cooling runner to absorb the heat, and the purpose of quickly cooling the area with high local heat dissipation density is achieved. The liquid cooling and phase change heat storage structure is arranged in a targeted manner, so that the reasonable configuration of phase change and liquid cooling can be realized on the whole, the heating problem of an electronic element is solved through the combined action of latent heat and sensible heat, and the working temperature of the electronic equipment is kept stable and appropriate.
An exothermic phase: when the electronic element stops working, the phase change energy storage material in the phase change energy storage module releases absorbed heat, the material phase changes to an original state, and the cyclic use of the phase change energy storage material is realized. In addition, in the heat release stage, because electronic component stop work and no longer produce the heat, phase change energy storage material can also play heat retaining effect through heat release, prevents that low temperature from influencing electronic component's normal work.
The utility model provides a cooling device of liquid cooling heat dissipation phase transition heat-retaining is applicable to electronic equipment's cooling heat dissipation, is particularly useful for the cooling heat dissipation of aerospace field electronic components under relative confined condition. However, the application of the heat storage device is not limited to the field of electronic equipment, and the heat storage device can also be used in the related fields of heat generation and exchange, such as temperature reduction of mechanical equipment or devices, waste heat recycling and the like.
The utility model provides a cooling device of liquid cooling heat dissipation phase transition heat-retaining arranges liquid cooling heat dissipation and phase transition heat-retaining in the coplanar, has reduced the holistic thickness of device, and is small, and light in weight is favorable to installing and using in narrow and small space. The structural form that liquid cooling heat dissipation and phase transition heat-retaining combined together can break through the liquid cooling runner in the position of more difficult installation phase transition energy storage module, has reduced phase change material and has received the restriction of cladding casing space and processing difficulty degree. In addition, the user can carry out the nimble configuration to liquid cooling and phase transition energy storage according to the height of electronic component density of generating heat, and the pertinence is strong, and the circulation of liquid cooling can play the effect of rapid cooling in the region that the density of generating heat is high.
The utility model provides a cooling device of liquid cooling heat dissipation phase transition heat-retaining can the solid-solid phase transition energy storage material of filling in the phase transition energy storage module, and it is nontoxic, pollution-free, noncorrosive, and the thermal expansion rate is low, and volume change is little when the temperature risees and takes place the phase transition for pressure variation is little in the phase transition energy storage module casing, is difficult for taking place to leak, long service life.
Finally, it is noted that: the above list is only the concrete implementation example of the present invention, and it is a matter of course that those skilled in the art can make modifications and variations to the present invention, and if these modifications and variations fall within the scope of the claims of the present invention and the equivalent technology, they should be considered as the protection scope of the present invention.
Claims (10)
1. The utility model provides a cooling device of liquid cooling heat dissipation phase transition heat-retaining which characterized in that includes:
the cooling device comprises a cooling bottom plate, a liquid cooling runner and a phase change energy storage mounting groove are arranged on the cooling bottom plate, and the liquid cooling runner and the phase change energy storage mounting groove are arranged in the same plane; the liquid cooling flow channel is provided with a first inlet end and a first outlet end, and cooling liquid is filled in the liquid cooling flow channel;
the phase change energy storage module is arranged in the phase change energy storage mounting groove;
the liquid cooling runner cover plate covers the liquid cooling runner;
and the liquid cooling circulating power module is communicated with the liquid cooling runner, so that cooling liquid can circularly flow in the liquid cooling runner.
2. The cooling device of claim 1, wherein the phase change energy storage module comprises a housing and a phase change energy storage material encapsulated within the housing.
3. The cooling device of claim 2, wherein the phase change energy storage material is a solid-solid phase change energy storage material.
4. The cooling device of claim 3, wherein the solid-solid phase change energy storage material is an inorganic hydrated salt.
5. The cooling device according to claim 2, wherein the material of the shell is red copper, and the shell is formed by a drawing process.
6. The cooling apparatus as claimed in claim 1, wherein said liquid cooling flow passage has a U-shape, S-shape or serpentine shape.
7. The cooling apparatus as claimed in claim 1, wherein the liquid-cooled circulation power module includes a coolant storage tank and a pump body, the liquid-cooled circulation power module having a second inlet end and a second outlet end, wherein the second outlet end is connected to the first inlet end of the liquid-cooled flow passage, the second inlet end is connected to the first outlet end of the liquid-cooled flow passage, and the coolant circulates through the liquid-cooled flow passage and the coolant storage tank by power of the pump body.
8. The cooling device as claimed in claim 1, wherein the material of the cooling floor is an aluminum alloy or a titanium alloy.
9. The cooling device as claimed in claim 1, wherein the liquid cooling flow passage and the phase change energy storage mounting groove are formed by CNC machining and/or wire cutting.
10. The cooling device as claimed in claim 1, wherein the phase change energy storage module is fixed in the phase change energy storage mounting groove by a fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922228654.0U CN210900189U (en) | 2019-12-13 | 2019-12-13 | Cooling device for liquid cooling heat dissipation phase change heat storage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922228654.0U CN210900189U (en) | 2019-12-13 | 2019-12-13 | Cooling device for liquid cooling heat dissipation phase change heat storage |
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| CN210900189U true CN210900189U (en) | 2020-06-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911892A (en) * | 2020-07-10 | 2020-11-10 | 电子科技大学 | Composite heat dissipation device adopting composite phase change material and micro-channel liquid cooling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911892A (en) * | 2020-07-10 | 2020-11-10 | 电子科技大学 | Composite heat dissipation device adopting composite phase change material and micro-channel liquid cooling |
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Address after: 508, gate D, Guochuang Industrial Park, Laiguangying West Road, Chaoyang District, Beijing 100012 Patentee after: Beijing Zhongkai Xinke Technology Co.,Ltd. Address before: Room 10, 4 / F, block B, building 6, Guochuang Industrial Park, 8 Laiguangying, Chaoyang District, Chaoyang District, Beijing 100012 Patentee before: Beijing Zhongkai Xinke Technology Co.,Ltd. |
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