CN220707585U - Temperature control and energy saving device based on phase change material - Google Patents
Temperature control and energy saving device based on phase change material Download PDFInfo
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- CN220707585U CN220707585U CN202322432740.XU CN202322432740U CN220707585U CN 220707585 U CN220707585 U CN 220707585U CN 202322432740 U CN202322432740 U CN 202322432740U CN 220707585 U CN220707585 U CN 220707585U
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- heat exchange
- phase change
- change material
- exchange tube
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- 239000012782 phase change material Substances 0.000 title claims abstract description 38
- 239000003094 microcapsule Substances 0.000 claims description 4
- 230000002572 peristaltic effect Effects 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 abstract description 30
- 239000007788 liquid Substances 0.000 description 14
- 238000001816 cooling Methods 0.000 description 8
- 238000001179 sorption measurement Methods 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- HLZKNKRTKFSKGZ-UHFFFAOYSA-N tetradecan-1-ol Chemical compound CCCCCCCCCCCCCCO HLZKNKRTKFSKGZ-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- GYSCBCSGKXNZRH-UHFFFAOYSA-N 1-benzothiophene-2-carboxamide Chemical compound C1=CC=C2SC(C(=O)N)=CC2=C1 GYSCBCSGKXNZRH-UHFFFAOYSA-N 0.000 description 1
- GHVNFZFCNZKVNT-UHFFFAOYSA-N Decanoic acid Natural products CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Other Air-Conditioning Systems (AREA)
Abstract
The utility model discloses a temperature control energy-saving device based on a phase change material, which relates to the technical field of temperature control equipment, and comprises an inner machine component and an outer machine component, wherein the inner machine component comprises an inner machine fan, a first fin tube and an inner heat exchange tube; the outer unit comprises an outer heat exchange tube and a circulating pump, the outer heat exchange tube is communicated with the inner heat exchange tube to form a circulating passage, a circulating working medium for absorbing cold or heat is arranged in the circulating passage, and the circulating pump is arranged on the circulating passage; according to the utility model, through the communicated inner heat exchange tube, the communicated outer heat exchange tube and the circulating working medium in the two, the cold energy in the external environment can be introduced into the limited space for refrigeration, meanwhile, the phase change material in the first fin tube can store the external redundant cold energy or the redundant cold energy of the refrigeration mechanism, and when refrigeration is needed, the cold energy in the phase change material can be used for independent refrigeration or can be used for refrigeration together with the temperature control mechanism, so that the opening frequency of the temperature control mechanism can be reduced, and the refrigeration pressure of the temperature control mechanism can be reduced.
Description
Technical Field
The utility model relates to the technical field of temperature control equipment, in particular to a temperature control and energy saving device based on a phase change material.
Background
Most of the existing limited space temperature control products are refrigeration air conditioners, and in order to ensure the temperature of a limited space, the refrigeration air conditioners are usually required to be continuously started for 24 hours, so that the energy consumption is very high. In order to solve this technical problem, many refrigeration schemes have been proposed.
For example, the patent application number is 202223559298.9, the name is a refrigeration system applied to a vehicle, and the refrigeration system comprises an adsorption box, a condenser and an evaporator which are arranged on the vehicle and are sequentially communicated through pipelines, wherein the adsorption box, the condenser, the evaporator and the pipelines are all in a negative pressure environment; the adsorption box is positioned at the top of the vehicle, the wall surface of the adsorption box is provided with a light transmission area, the inside of the adsorption box is filled with an adsorption material, and the adsorption material is adsorbed with a circulating working medium; the evaporator is located below the condenser, and at least one surface of the evaporator is located inside the vehicle. The device actually uses the fact that the boiling temperatures of water under different pressure conditions are different, and the water boiling absorbs heat to cool the inside of the vehicle body at night. The main advantage of this technical scheme is that the cooling process does not need electrical component to intervene, can go on spontaneously according to the difference in temperature. But the cooling efficiency is low and the refrigerating effect is poor.
In fact, the night outside environment has very abundant cold. Many examples of cooling the night outside environment by introducing cooling into a confined space have also emerged in the prior art. However, there is a problem in that the night cooling capacity or the surplus cooling capacity of the air conditioner cannot be stored and the cooling capacity cannot be fully utilized.
Disclosure of Invention
The utility model aims to provide a temperature control energy-saving device based on a phase change material, which solves the problems in the prior art, can reduce the opening frequency of a temperature control mechanism, reduce the refrigeration pressure of the temperature control mechanism, reduce the energy consumption, and is more energy-saving and environment-friendly.
In order to achieve the above object, the present utility model provides the following solutions: the utility model provides a temperature control energy-saving device based on a phase change material, which comprises an inner machine component and an outer machine component, wherein the inner machine component is fixed at the outer side of an air outlet in a limited space inner temperature control mechanism, and the outer machine component is fixed in an external environment; the inner unit comprises an inner machine fan, a first fin tube and an inner heat exchange tube, wherein the inner machine fan is arranged in the air outlet direction of the air outlet, the inner heat exchange tube and the first fin tube are sequentially arranged on the air outlet side of the inner machine fan, and a phase change material is arranged in the first fin tube; the external unit comprises an external heat exchange tube and a circulating pump, the external heat exchange tube is communicated with the internal heat exchange tube to form a circulating passage, a circulating working medium for absorbing cold or heat is arranged in the circulating passage, and the circulating pump is arranged on the circulating passage.
Preferably, the outer machine assembly further comprises an outer machine fan, and the outer heat exchange tube is located on the air outlet side of the outer machine fan.
Preferably, the outer unit comprises an outer machine shell, an outer machine air inlet and an outer machine air outlet which are opposite to each other are formed in the outer machine shell, the outer machine fan is arranged at the outer machine air inlet, and the outer heat exchange tube is located between the outer machine air outlet and the outer machine fan.
Preferably, the inner machine assembly further comprises a second fin tube, wherein a phase change material is arranged in the second fin tube, and the second fin tube is located between the air outlet and the inner machine fan.
Preferably, the inner unit comprises an inner unit shell, an inner unit air inlet and an inner unit air outlet which are opposite to each other are formed in the inner unit shell, the inner unit air inlet is opposite to the air outlet of the temperature control mechanism, the second finned tube, the inner unit fan, the inner heat exchange tube and the first finned tube are sequentially arranged in the inner unit shell along the air outlet direction of the air outlet, and the first finned tube is opposite to the inner unit air outlet.
Preferably, a fixed supporting seat for fixing the inner machine shell is arranged at the bottom of the inner machine shell; the top of the inner machine shell is provided with a flexible fixing belt for connecting a temperature control mechanism.
Preferably, the temperature control and energy saving device further comprises an inner temperature sensor, an outer temperature sensor and a controller, wherein the inner temperature sensor is used for measuring the ambient temperature of the inner unit, the outer temperature sensor is used for measuring the finishing ambient temperature, and the controller is electrically connected with the inner temperature sensor, the outer temperature sensor, the inner machine fan, the outer machine fan and the circulating pump.
Preferably, two fans of the internal machine are arranged side by side, and the circulating pump is a peristaltic pump.
Preferably, the circulating working medium is phase-change microcapsule suspension.
Preferably, fins are arranged on the inner heat exchange tube and the outer heat exchange tube.
Compared with the prior art, the utility model has the following technical effects:
the utility model can lead the cold energy in the external environment into a limited space for refrigeration through the communicated inner heat exchange tube, the outer heat exchange tube and the circulating working medium in the inner heat exchange tube, and simultaneously, the first fin tube with the phase change material is arranged at the outer side of the inner heat exchange tube, so that the external redundant cold energy or the redundant cold energy of the refrigeration mechanism can be stored by utilizing the phase change material, and when the refrigeration is needed, the cold energy in the phase change material can be utilized for independent refrigeration, and the refrigeration can be carried out together with the temperature control mechanism, thereby reducing the starting frequency of the temperature control mechanism, reducing the refrigeration pressure of the temperature control mechanism, reducing the energy consumption and being more energy-saving and environment-friendly.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of an internal unit assembly according to the present utility model;
FIG. 2 is a front view of the inner assembly;
FIG. 3 is a schematic view of the internal structure of the internal machine assembly;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a schematic view of the overall structure of the external unit assembly according to the present utility model;
FIG. 6 is a front view of the outer machine assembly;
FIG. 7 is a schematic view of the internal structure of the outer machine assembly;
1, an internal machine fan; 2. a first fin tube; 3. an inner heat exchange tube; 4. an outer heat exchange tube; 5. a circulation pump; 6. an external fan; 7. a second fin tube; 8. an inner machine shell; 9. fixing the supporting seat; 10. a flexible fixing band; 11. a fin; 12. an inner liquid inlet; 13. an inner liquid outlet; 14. an outer liquid inlet; 15. an outer liquid outlet; 16. an outer machine housing; 17. and a return air baffle.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model aims to provide a temperature control energy-saving device based on a phase change material, which solves the problems in the prior art, can reduce the opening frequency of a temperature control mechanism, reduce the refrigeration pressure of the temperature control mechanism, reduce the energy consumption, and is more energy-saving and environment-friendly.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1 to 7, the present embodiment provides a temperature control and energy saving device based on a phase change material, which includes an inner unit assembly and an outer unit assembly, wherein the inner unit assembly is fixed at the outer side of an air outlet in a temperature control mechanism (such as an air conditioner) in a limited space, and the outer unit assembly is fixed in an external environment. The inner unit comprises an inner machine fan 1, a first fin tube 2 and an inner heat exchange tube 3, wherein the inner machine fan 1 is arranged in the air outlet direction of the air outlet, the inner heat exchange tube 3 and the first fin tube 2 are sequentially arranged on the air outlet side of the inner machine fan 1, and a phase change material is arranged in the first fin tube 2; the outer unit comprises an outer heat exchange tube 4 and a circulating pump 5, wherein an outer liquid inlet 14 and an outer liquid outlet 15 are formed in two ends of the outer heat exchange tube 4, an inner liquid inlet 12 and an inner liquid outlet 13 are formed in two ends of the inner heat exchange tube 3, the outer liquid outlet 15 is communicated with the inner liquid inlet 12, the outer liquid inlet 14 is communicated with the inner liquid outlet 13, so that a circulating passage is formed, a circulating working medium for absorbing cold energy or heat is arranged in the circulating passage, and the circulating pump 5 is arranged on the circulating passage.
The temperature control mechanism is used for cooling the limited space.
When the night temperature is lower than the set value, the circulating pump 5 is started to circulate the circulating working medium. When the circulating working medium circulates, the cold energy in the night external environment can be introduced into the limited space. The inner machine fan 1 blows out the cold energy in the inner heat exchange tube 3. Since the first fin tube 2 is located outside the inner heat exchange tube 3, when the cold of the inner heat exchange tube 3 is blown out, heat exchange is performed with the phase change material in the first fin tube 2, so that the phase change material is changed in shape (gas is changed into liquid or liquid is changed into solid), the cold is stored, and the rest of the cold enters a limited space for refrigeration. If the night temperature is not lower than the set value, the circulation pump 5 is not started, and the cool air blown out by the air conditioner is discharged into the limited space through the first fin tube 2. The cold air exchanges heat with the phase change material in the first fin tube 2 to change the shape of the phase change material, the cold energy is stored, and the residual cold energy enters a limited space for refrigeration. When refrigeration is needed in daytime, the phase change material in the first fin tube 2 releases cold energy, the inner machine fan 1 is started, the cold energy is blown into a limited space, the refrigeration pressure of the air conditioner can be reduced, and the use frequency of the air conditioner is reduced.
When the high temperature condition occurs in the limited space and the temperature is higher than the outdoor temperature by a certain value (the difference is not less than 10 ℃ in general), the circulating pump 5, the air conditioner and the internal machine fan 1 are required to be started at night or in daytime, and the circulating working medium introduces the cold energy in the external environment into the limited space and carries out refrigeration by combining the cold energy of the air conditioner.
Therefore, in this embodiment, through the internal heat exchange tube 3, the external heat exchange tube 4 and the circulation working medium inside the two that are connected, the cold energy in the external environment can be introduced into the limited space for refrigeration, and meanwhile, the first finned tube 2 with the phase change material is arranged at the outer side of the internal heat exchange tube 3, so that the external redundant cold energy or the redundant cold energy of the refrigeration mechanism can be stored by utilizing the phase change material, and when refrigeration is needed, the cold energy in the phase change material can be utilized for independent refrigeration, and can also be used for refrigeration together with the temperature control mechanism, thereby reducing the starting frequency of the air conditioner, reducing the refrigeration pressure of the air conditioner, reducing the energy consumption and being more energy-saving and environment-friendly.
It should be understood by those skilled in the art that the temperature control and energy saving device in the present embodiment can also be used for heating process of limited space.
Further, in this embodiment, the external machine assembly further includes an external machine fan 6, and the external heat exchange tube 4 is located at an air outlet side of the external machine fan 6. The air flow near the outer heat exchange tube 4 can be enhanced by the outer machine fan 6, a cold source is continuously supplemented for the outer heat exchange tube 4, and the heat exchange efficiency of the outer heat exchange tube 4 and the external environment is enhanced.
Further, in this embodiment, the outer machine assembly includes an outer machine housing 16, an outer machine air inlet and an outer machine air outlet opposite to each other are provided on the outer machine housing 16, an outer machine fan 6 is provided at the outer machine air inlet, and an outer heat exchange tube 4 is located between the outer machine air outlet and the outer machine fan 6. And, outer quick-witted air intake and outer quick-witted air outlet department all are provided with grid structure, prevent that rubbish from getting into the inside of outer casing 16. The top of the outer casing 16 in this embodiment is also provided with a plurality of strip-shaped openings, and the strip-shaped openings are provided with arcuate return air baffles 17.
Further, the inner machine assembly in the embodiment further comprises a second fin tube 7, and the phase change material is also arranged in the second fin tube 7. The second finned tube 7 is located between the air outlet and the inner machine fan 1. The second fin tube 7 is closer to the air outlet of the air conditioner, so that the redundant cold energy of the air conditioner can be better stored.
Further, in this embodiment, the inner unit includes an inner casing, an inner air inlet and an inner air outlet are provided on the inner casing, the inner air inlet is opposite to the air outlet of the temperature control mechanism, the second finned tube 7, the inner fan 1, the inner heat exchange tube 3 and the first finned tube 2 are sequentially provided in the inner casing along the air outlet direction of the air outlet, and the first finned tube 2 is opposite to the air outlet of the inner casing. And grille structures are arranged at the positions of the air inlet of the inner machine and the air outlet of the inner machine.
The bottom of the inner machine shell is provided with a fixed supporting seat 9 for fixing the inner machine shell; the top of the inner machine shell is provided with a flexible fixing band 10 for connecting a temperature control mechanism. The fixed supporting seat 9 and the flexible fixing belt 10 can be selectively fixed on a shell, a bracket or a wall body of the temperature control mechanism, and the specific fixing mode is reasonably selected according to the shape and the structure of the temperature control mechanism and the installation environment.
Further, the temperature control energy saving device in this embodiment further includes an inner temperature sensor, an outer temperature sensor and a controller, wherein the inner temperature sensor is used for measuring the environmental temperature of the inner unit, the outer temperature sensor is used for measuring the finishing environmental temperature, and the controller is electrically connected with the inner temperature sensor, the outer temperature sensor, the inner fan 1, the outer fan 6 and the circulating pump 5. The controller is used for receiving signals of the inner temperature sensor and the outer temperature sensor, knowing the inner temperature and the outer temperature, and reasonably selecting and starting the inner machine fan 1, the outer machine fan 6 and the circulating pump 5 according to the conditions of the inner temperature and the outer temperature. The controller may be disposed in the inner housing or the outer housing 16 and the electrical connection may be selected to be wireless. The specific control manner of the controller is well known to those skilled in the art, and the description of this embodiment is omitted.
Furthermore, in this embodiment, two fans 1 of the internal machine are arranged side by side, and the circulation pump 5 is a peristaltic pump.
Further, in this embodiment, the circulating working medium is a phase-change microcapsule suspension, which uses paraffin and melamine resin as phase-change microcapsule materials, and uses propylene glycol or an aqueous solution of ethylene glycol or ethanol as a circulating working medium of a base solution. The phase change materials in the first fin tube 2 and the second fin tube 7 are phase change composite materials synthesized by main materials of decanoic acid, tetradecanol, fatty acid and the like.
Further, in order to improve the heat exchange efficiency of the inner heat exchange tube 3 and the outer heat exchange tube 4, fins 11 are disposed on both the inner heat exchange tube 3 and the outer heat exchange tube 4.
The adaptation to the actual need is within the scope of the utility model.
It should be noted that it will be apparent to those skilled in the art that the present utility model is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The temperature control energy-saving device based on the phase change material is characterized by comprising an inner machine component and an outer machine component, wherein the inner machine component is fixed on the outer side of an air outlet in a limited space inner temperature control mechanism, and the outer machine component is fixed in an external environment; the inner unit comprises an inner machine fan, a first fin tube and an inner heat exchange tube, wherein the inner machine fan is arranged in the air outlet direction of the air outlet, the inner heat exchange tube and the first fin tube are sequentially arranged on the air outlet side of the inner machine fan, and a phase change material is arranged in the first fin tube; the external unit comprises an external heat exchange tube and a circulating pump, the external heat exchange tube is communicated with the internal heat exchange tube to form a circulating passage, a circulating working medium for absorbing cold or heat is arranged in the circulating passage, and the circulating pump is arranged on the circulating passage.
2. The phase change material-based temperature-controlled energy saving device of claim 1, wherein the external machine assembly further comprises an external machine fan, and the external heat exchange tube is located at an air outlet side of the external machine fan.
3. The phase change material-based temperature control and energy saving device according to claim 2, wherein the external unit comprises an external machine shell, an external machine air inlet and an external machine air outlet are arranged on the external machine shell, the external machine fan is arranged at the external machine air inlet, and the external heat exchange tube is arranged between the external machine air outlet and the external machine fan.
4. A phase change material-based temperature and energy saving device according to any one of claims 1 to 3, wherein the internal machine assembly further comprises a second finned tube, the phase change material is arranged in the second finned tube, and the second finned tube is located between the air outlet and the internal machine fan.
5. The phase change material-based temperature control and energy saving device according to claim 4, wherein the inner unit comprises an inner unit shell, an inner unit air inlet and an inner unit air outlet are arranged on the inner unit shell, the inner unit air inlet is opposite to the air outlet of the temperature control mechanism, the second finned tube, the inner unit fan, the inner heat exchange tube and the first finned tube are sequentially arranged in the inner unit shell along the air outlet direction of the air outlet, and the first finned tube is opposite to the air outlet of the inner unit.
6. The phase change material-based temperature-controlled energy saving device according to claim 5, wherein a fixed support seat for fixing the inner casing is provided at the bottom of the inner casing; the top of the inner machine shell is provided with a flexible fixing belt for connecting a temperature control mechanism.
7. The phase change material-based temperature control and energy saving device of claim 2, further comprising an inner temperature sensor for measuring an ambient temperature of the inner unit, an outer temperature sensor for measuring a finishing ambient temperature, and a controller electrically connected to the inner temperature sensor, the outer temperature sensor, the inner blower, the outer blower, and the circulation pump.
8. The phase-change material-based temperature control and energy saving device according to claim 1, wherein two fans of the internal machine are arranged side by side, and the circulating pump is a peristaltic pump.
9. The phase change material-based temperature-controlled energy-saving device according to claim 1, wherein the circulating working medium is a phase change microcapsule suspension.
10. The phase change material-based temperature-controlled energy saving device according to claim 1, wherein fins are provided on both the inner heat exchange tube and the outer heat exchange tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322432740.XU CN220707585U (en) | 2023-09-08 | 2023-09-08 | Temperature control and energy saving device based on phase change material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322432740.XU CN220707585U (en) | 2023-09-08 | 2023-09-08 | Temperature control and energy saving device based on phase change material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220707585U true CN220707585U (en) | 2024-04-02 |
Family
ID=90453257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322432740.XU Active CN220707585U (en) | 2023-09-08 | 2023-09-08 | Temperature control and energy saving device based on phase change material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220707585U (en) |
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2023
- 2023-09-08 CN CN202322432740.XU patent/CN220707585U/en active Active
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