A cooling device and a cooling garment using the same
Patent Information
- Application Number
- CN202522351510.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-04
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-11-04
AI Technical Summary
[0003]但是,上述的制冷装置仅两个通道,其分别是通过第一、第二导热体后吹出,然而第一、第二导热体均设置有多个细小的风孔,气流通过风孔后,速度会变小,且风量也较小,以致当制冷装置应用于制冷衣后,其也难以在衣服内形成流速快,且流量大的冷风循环,导致整个制冷衣的制冷效果不够理想,并不能满足使用者的使用要求
[0015]采用上述技术方案后,本实用新型与现有技术相比较具有如下有益效果:本实用新型增设了循环风口,而风扇通过冷循环进风口抽入的冷风一部分直接通过循环风口吹出,以此增大冷风循环流动的风量,以此提高制冷效果,另一部分通过导冷座进行再次制冷后从冷风口吹出,以形成温度更低的冷风,以此提高制冷效果,以能满足使用者的使用要求。本实用新型在使用时,应用于衣服中,以形成制冷衣服;其中,所述冷风口、冷循环进风口和循环风口均显露于衣服内部;所述外部进风口和散热口均显露于衣服外部,以此在工作过程中,风扇通过冷循环进风口抽入的冷风一部分直接通过循环风口吹出至衣服内部,以此增大冷风循环流动的风量,以此提高制冷效果,让人体感觉更加舒适;另一部分冷风通过导冷座进行再次制冷后从冷风口吹出,以形成温度更低的冷风,以此提高制冷效果,让人体感觉温度更低、更加舒适,以能满足使用者的使用要求。
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Figure CN224872663U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of refrigeration technology, and specifically to a refrigeration device and refrigerated clothing using the refrigeration device. Background Technology
[0002] Chinese utility model patent application number 202210118589.X discloses a refrigeration device and a refrigerated garment using the refrigeration device. The refrigeration device includes a shell, a TEC heating and cooling module installed inside the shell, a fan, and a control circuit board. The TEC heating and cooling module includes a TEC cooling chip installed inside the shell and first and second heat conductors respectively disposed on the cold and hot sides of the TEC cooling chip. The shell has an air inlet corresponding to the fan position, an exhaust port corresponding to the second heat conductor, and a cold and warm air outlet corresponding to the first heat conductor at the end of the shell. When the fan is working, air is drawn into the shell through the air inlet and blown towards the first and second heat conductors. The warm air formed after passing through the second heat conductor is discharged from the exhaust port, and the cold air formed after passing through the first heat conductor is discharged from the cold and warm air outlet. The control circuit board switches the positive and negative terminals of the power supply of the TEC cooling chip to switch the cold and hot sides, so that the cold air formed after passing through the second heat conductor is discharged from the exhaust port, and the warm air formed after passing through the first heat conductor is discharged from the cold and warm air outlet. A fan generates airflow that simultaneously blows onto the first heat conductor on the cold side and the second heat conductor on the hot side of the TEC cooling chip. The cold air formed after passing through the first heat conductor is discharged from the cold / warm air outlet, thus achieving cooling; while the warm air formed after passing through the second heat conductor is discharged from the exhaust port, thus achieving heat dissipation and improving the cooling effect of the TEC cooling chip. In addition, the positive and negative terminals of the TEC cooling chip's power supply can be switched by the control circuit board to reverse the cold and hot sides, so that the warm air formed after passing through the first heat conductor is discharged from the cold / warm air outlet, thus achieving a heating effect, while the cold air formed after passing through the second heat conductor is discharged from the exhaust port, thus improving the heating effect of the TEC cooling chip.
[0003] However, the aforementioned cooling device only has two channels, which are blown out after passing through the first and second heat conductors respectively. However, both the first and second heat conductors are equipped with multiple small air holes. After the airflow passes through the air holes, the speed will decrease and the air volume will also be small. As a result, when the cooling device is applied to cooling clothing, it is difficult to form a fast and large flow of cold air circulation inside the clothing, resulting in an unsatisfactory cooling effect of the entire cooling clothing, which cannot meet the user's requirements.
[0004] In view of the above, the inventors propose the following technical solution. Summary of the Invention
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a refrigeration device and refrigerated clothing using the refrigeration device.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The refrigeration device includes a housing, a TEC refrigeration module installed inside the housing, a fan, and a control circuit board. The TEC refrigeration module includes a TEC refrigeration chip installed inside the housing and electrically connected to the control circuit board, a cooling guide seat on the cold side of the TEC refrigeration chip, and a heat sink on the hot side of the TEC refrigeration chip. The housing has a heat dissipation port corresponding to the heat sink, and a cold air outlet corresponding to the cooling guide seat. An external air inlet is provided on the outer side of the housing, corresponding to one side of the fan. The external air inlet and the heat dissipation port are distributed on the outer sides of the front and rear ends of the heat sink. A cold circulation air inlet is provided on the inner side of the housing, corresponding to the other side of the fan. The cold circulation air inlet and the cold air outlet are distributed on the outer sides of the front and rear ends of the cooling guide seat. A circulation air outlet is also provided next to the cold circulation air inlet on the housing. The circulation air outlet is connected to the cold circulation air inlet and is located at the front end of the heat sink. Part of the cold air entering through the cold circulation air inlet is directly blown out through the circulation air outlet, and the other part is cooled by the cooling guide seat and blown out through the cold air outlet.
[0007] Furthermore, in the above technical solution, the inner side of the outer shell is also provided with a pad for contact with the human body, so that the cold circulation air inlet, cold air outlet and circulation air outlet are all separated from the human body.
[0008] Furthermore, in the above technical solution, the pad is provided with multiple spaced support pieces, and a gap channel is formed between two adjacent support pieces.
[0009] Furthermore, in the above technical solution, the outer edge of the outer shell is formed with an outwardly protruding flange plate, and a clamping plate is snapped onto the flange plate, forming a clamping gap between the clamping plate and the flange plate for clamping the clothes.
[0010] Furthermore, in the above technical solution, a first buckle hole is provided at one end of the flange plate, and a protruding buckle is provided in the first buckle hole. A second buckle hole is provided at the other end of the flange plate. A buckle is provided at one end of the clamping plate, and a spring buckle is provided at the other end. The buckle is inserted into the first buckle hole and engages with the protruding buckle for positioning. The spring buckle passes through the second buckle hole and engages with the edge of the opening of the second buckle hole for fixation.
[0011] Furthermore, in the above technical solution, the fan includes a housing, a motor installed in the housing, turbine blades installed in the motor, and a partition plate fixed in the housing. The housing is provided with a first air inlet corresponding to the cold circulation air inlet, and the housing is also provided with a second air inlet corresponding to the external air inlet. The two ends of the turbine blades are respectively positioned between the first air inlet and the second air inlet. The partition plate divides the opening on the outside of the housing to form a first air outlet and a second air outlet at the interval end. The first air outlet and the second air outlet are distributed on the outside of the turbine blades and correspond to the first air inlet and the second air inlet, respectively. The first air outlet also corresponds to the cooling base and the circulation air outlet, and the second air outlet also corresponds to the heat dissipation base.
[0012] Furthermore, in the above technical solution, the turbine fan blade includes a hub assembled with a motor and multiple blades integrally formed on the periphery of the hub and spaced apart. A partition is integrally connected between the middle of two adjacent blades, dividing the blades into a first blade and a second blade. A first airflow channel corresponding to the first air inlet and the first air outlet is formed between two adjacent first blades, and the first airflow channel also corresponds to the cooling base. A second airflow channel corresponding to the second air inlet and the second air outlet is formed between two adjacent second blades, and the second airflow channel corresponds to the heat sink. The inner side of the partition is integrally connected to the periphery of the hub, and the outer side of the partition extends to the outer end of the blade.
[0013] Furthermore, in the above technical solution, the housing includes a bottom shell and a top cover that are fastened together. The motor is mounted on the bottom shell and located below the top cover. The second air inlet is located on the top cover, the first air inlet is located at the bottom of the bottom shell, and the first air outlet and the second air outlet are located on the sides of the bottom shell and the top cover.
[0014] A refrigerated garment using the refrigeration device, comprising a garment, characterized in that: the garment is provided with the aforementioned refrigeration device, wherein the cold air inlet, the cold circulation air inlet, and the circulation air inlet are all exposed inside the garment; and the external air inlet and the heat dissipation vent are all exposed outside the garment.
[0015] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention adds a circulating air vent, and part of the cold air drawn in by the fan through the cold circulation air inlet is directly blown out through the circulating air vent, thereby increasing the air volume of the cold air circulation and thus improving the cooling effect. The other part is cooled again through the cooling base and then blown out through the cold air vent to form cold air at a lower temperature, thereby improving the cooling effect and meeting the user's requirements. This invention is used in clothing to create a refrigerated garment. The cold air vent, cold air circulation inlet, and circulation vent are all exposed inside the garment; the external air inlet and heat dissipation vent are exposed outside the garment. During operation, a portion of the cold air drawn in by the fan through the cold air circulation inlet is directly blown out through the circulation vent into the garment, increasing the airflow and thus improving the cooling effect for greater comfort. The remaining cold air is further cooled by the cooling base before being blown out through the cold air vent, creating even lower-temperature air and further enhancing the cooling effect, making the user feel cooler and more comfortable, thus meeting the user's requirements. Attached Figure Description
[0016] Figure 1 This is a perspective view of the refrigeration device of this utility model; Figure 2 This is a perspective view of the refrigeration device of this utility model from another angle; Figure 3 This is an exploded perspective view of the refrigeration device of this utility model; Figure 4 This is a cross-sectional view of the refrigeration device of this utility model; Figure 5 This is a perspective view of the clamping plate in this utility model; Figure 6 This is a three-dimensional view of the cooling clothing of this utility model. Detailed Implementation
[0017] The present invention will be further described below with reference to specific embodiments and accompanying drawings.
[0018] See Figure 1-6 As shown, a refrigeration device includes a housing 1, a TEC refrigeration module 2 installed inside the housing 1, a fan 3, and a control circuit board.
[0019] The TEC cooling module 2 includes a TEC cooling chip 21 installed inside the housing 1 and electrically connected to the control circuit board, a cooling guide seat 22 disposed on the cold side of the TEC cooling chip 21, and a heat sink 23 disposed on the hot side of the TEC cooling chip 21. The housing 1 has a heat dissipation port 101 corresponding to the heat sink 23, and a cold air port 102 corresponding to the cooling guide seat 22. An external air inlet 103 corresponding to one side of the fan 3 is provided on the outer side of the housing 1. The external air inlet 103 and the heat dissipation port 101 are distributed on the outer sides of the front and rear ends of the heat sink 23. A cold circulation air inlet 104 corresponding to the other side of the fan 3 is provided on the inner side of the housing 1. The cold circulation air inlet 104 and the cold air port 102 are located on the outer sides of the heat sink 23. 02 is distributed on the outer sides of the front and rear ends of the cooling base 22; during operation, the fan 3 and the TEC cooling chip 21 work simultaneously. The cold surface of the TEC cooling chip 21 cools and lowers the cooling base 22, while the air drawn in by the fan 3 through the cold circulation air inlet 104 is cooled by the cooling base 22 to form cold air. The cold air is discharged through the cold air outlet 102, while the heat generated by the hot surface of the TEC cooling chip 21 is transferred to the heat sink 23. The air drawn in by the fan 3 through the external air inlet 103 carries away the heat from the heat sink 23 to form hot air. The hot air is discharged through the heat sink 101, thereby improving the cooling efficiency of the TEC cooling chip 21. The above is the prior art.
[0020] To improve cooling efficiency / effect, the following improvements have been made: A circulation vent 105 is also provided next to the cold circulation air inlet 104 on the outer casing 1. This circulation vent 105 is connected to the cold circulation air inlet 104 and is located at the front end of the heat sink 23. Part of the cold air entering through the cold circulation air inlet 104 is directly blown out through the circulation vent 105, while the other part is cooled by the cooling guide seat 22 and then blown out through the cold air outlet 102. In other words, this invention adds a circulation vent 105, and part of the cold air drawn in by the fan 3 through the cold circulation air inlet 104 is directly blown out through the circulation vent 105, thereby increasing the airflow of the circulating cold air and improving the cooling effect. The other part is further cooled by the cooling guide seat 22 and then blown out through the cold air outlet 102 to form even lower-temperature cold air, thus improving the cooling effect and meeting the user's requirements. When in use, this invention is applied to clothing to create a refrigerated garment. The cold air inlet 102, cold air circulation inlet 104, and circulation inlet 105 are all exposed inside the garment 5; the external air inlet 103 and heat dissipation vent 101 are exposed outside the garment 5. During operation, a portion of the cold air drawn in by the fan 3 through the cold air circulation inlet 104 is directly blown out through the circulation inlet 105 into the garment, increasing the airflow and thus improving the cooling effect for greater comfort. Another portion of the cold air is further cooled by the cooling base 22 before being blown out through the cold air inlet 102, creating even lower-temperature cold air, further enhancing the cooling effect and making the user feel cooler and more comfortable, thus meeting the user's requirements.
[0021] The inner side of the outer casing 1 is also provided with a pad 4 for contact with the human body, so that the cold air inlet 104, the cold air outlet 102 and the circulating air outlet 105 are all separated from the human body, so as to avoid the human body from contacting the cold air inlet 104, the cold air outlet 102 and the circulating air outlet 105 and blocking or closing the cold air inlet 104, the cold air outlet 102 and the circulating air outlet 105, thereby improving the cold air circulation effect, and thus improving the cooling effect and cooling efficiency.
[0022] The pad 4 is provided with multiple spaced support plates 41, and a gap channel 40 is formed between two adjacent support plates 41. The generated cold air can pass through the gap channel 40, thereby further improving the cold air circulation effect, and further improving the cooling effect and cooling efficiency.
[0023] The outer edge of the outer shell 1 is formed with an outwardly protruding flange plate 11, and a clamping plate 12 is snapped onto the flange plate 11. A clamping gap 120 for clamping clothing is formed between the clamping plate 12 and the flange plate 11. This assembly is detachable, making installation and use more convenient. One end of the flange plate 11 is provided with a first buckle hole 111, in which a protruding buckle 112 is provided. The other end of the flange plate 11 is provided with a second buckle hole 113. One end of the clamping plate 12 is provided with a buckle 121, and the other end is provided with a spring buckle 122. The buckle 121 is inserted into the first buckle hole 111 and engages with the protruding buckle 112 for positioning. The spring buckle 122 passes through the second buckle hole 113 and engages with the edge of the opening of the second buckle hole 113 for fixation. The assembly structure is simple and easy to assemble and disassemble.
[0024] The fan 3 includes a housing 31, a motor installed in the housing 31, a turbine blade 32 installed in the motor, and a partition plate 33 fixed in the housing 31. The housing 31 is provided with a first air inlet 301 corresponding to the cold circulation air inlet 104, and a second air inlet 302 corresponding to the external air inlet 103. The two ends of the turbine blade 32 are respectively positioned between the first air inlet 301 and the second air inlet 302. The partition plate 33 divides the opening on the outside of the housing 31 to form a first air outlet 303 and a second air outlet 304 at the interval end. The first air outlet 303 and the second air outlet 304 are distributed on the outside of the turbine blade 32 and correspond to the first air inlet 301 and the second air inlet 302 respectively. The first air outlet 303 also corresponds to the cooling seat 22 and the circulation air outlet 105, and the second air outlet 304 also corresponds to the heat sink 23. When the fan 3 is working, the motor drives the turbine blade 32 to rotate. During the rotation, the turbine blade 32 draws air from the outside in through the second air inlet 302 and the external air inlet 103, allowing external air to flow into the outer shell 31 and then out through the heat sink 23 and the second air outlet 304 to form an airflow. At the same time, the turbine blade 32 also draws air from the outside in through the first air inlet 301 and the cold circulation air inlet 104, allowing cold air from inside the clothes to flow into the outer shell 31. Part of the cold air is directly blown out through the circulation air outlet 105 into the clothes, thereby increasing the air volume of the cold air circulation and improving the cooling effect, making people feel more comfortable. Another part of the cold air is cooled again through the cooling seat 22 and then blown out through the cold air outlet 102 to form a colder air. That is, one turbine blade 32 can achieve air intake and exhaust in two directions. Its structure is simple and can make the size of this utility model smaller.
[0025] The turbine fan blade 32 includes a hub 321 assembled with a motor and multiple blades 322 integrally formed around the hub 321 and spaced apart. A partition 305 is integrally connected between the middle of two adjacent blades 322, dividing the blades 322 into first blades 306 and second blades 307. A first airflow channel corresponding to the first air inlet 301 and the first air outlet 303 is formed between two adjacent first blades 306. The first airflow channel also corresponds to the cooling seat 22. A channel corresponding to the second air inlet 302 and the second air outlet 304 is formed between two adjacent second blades 307. The corresponding second airflow channel corresponds to the heat sink 23. Specifically, during operation, when the turbine fan blade 32 rotates, the first blade 306 draws air from the first air inlet 301, and after passing through the first airflow channel, it is discharged from the first air outlet 303. At the same time, the second blade 307 draws air from the second air inlet 302, and after passing through the second airflow channel, it is also discharged from the second air outlet 304. At this time, the air intake volume of the first air inlet 301 and the second air inlet 302 can be the same to meet the usage requirement that the air intake volume of the first air inlet 301 and the second air inlet 302 should be the same.
[0026] The inner side of the partition 305 is integrally connected to the outer periphery of the hub 321, and the outer side of the partition 305 extends to the outer end of the blade 322. Its structure is extremely stable and connects all the blades 322 together, ensuring that the entire turbine fan blade structure is more stable, has high strength, and a long service life.
[0027] The outer end of the blade 322 is larger than the inner end.
[0028] The blades 322 are vertically distributed around the hub 321, and the cross-section of the blades 322 is arc-shaped.
[0029] The housing 31 includes a bottom shell 311 and a top cover 312 that are fastened together. The motor is mounted on the bottom shell 311 and located below the top cover 312. The second air inlet 302 is disposed on the top cover 312. The first air inlet 301 is disposed at the bottom of the bottom shell 311. The first air outlet 303 and the second air outlet 304 are disposed on the sides of the bottom shell 311 and the top cover 312.
[0030] A type of clothing using this refrigeration device includes a garment 5 on which the aforementioned refrigeration device is installed. The cold air inlet 102, the cold circulation air inlet 104, and the circulation air inlet 105 are all exposed inside the garment 5; the external air inlet 103 and the heat dissipation vent 101 are both exposed outside the garment 5. During operation, a portion of the cold air drawn in by the fan 3 through the cold circulation air inlet 104 is directly blown out into the garment through the circulation air inlet 105, thereby increasing the airflow of the cold air circulation and improving the cooling effect, making the user feel more comfortable. Another portion of the cold air is further cooled by the cooling guide seat 22 and then blown out from the cold air inlet 102 to form even lower-temperature cold air, thereby improving the cooling effect and making the user feel cooler and more comfortable, thus meeting the user's requirements.
[0031] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.
Claims
1. A refrigeration device, comprising a housing (1), a TEC refrigeration module (2) installed in the housing (1), a fan (3), and a control circuit board, wherein the TEC refrigeration module (2) comprises a TEC refrigeration chip (21) installed in the housing (1) and electrically connected to the control circuit board, a cold-conducting seat (22) disposed on the cold side of the TEC refrigeration chip (21), and a heat sink (23) disposed on the hot side of the TEC refrigeration chip (21); the housing (1) is provided with a heat dissipation port (101) corresponding to the heat sink (23). The outer casing (1) is provided with a cold air inlet (102) corresponding to the cooling base (22). The outer side of the outer casing (1) is provided with an external air inlet (103) corresponding to one side of the fan (3). The external air inlet (103) and the heat dissipation inlet (101) are distributed on the outer sides of the front and rear ends of the heat dissipation base (23). The inner side of the outer casing (1) is provided with a cold circulation air inlet (104) corresponding to the other side of the fan (3). The cold circulation air inlet (104) and the cold air inlet (102) are distributed on the outer sides of the front and rear ends of the cooling base (22). Its features are: The outer casing (1) is also provided with a circulation air inlet (105) next to the cold circulation air inlet (104). The circulation air inlet (105) is connected to the cold circulation air inlet (104) and is located at the front end of the heat sink (23). Part of the cold air entering the cold circulation air inlet (104) is directly blown out through the circulation air inlet (105), and the other part is cooled by the cooling seat (22) and blown out through the cold air inlet (102).
2. The refrigeration device according to claim 1, characterized in that: The inner side of the outer shell (1) is also provided with a pad (4) for contact with the human body, so that the cold circulation air inlet (104), the cold air outlet (102) and the circulation air outlet (105) are all separated from the human body.
3. A refrigeration device according to claim 2, characterized in that: The pad (4) is provided with multiple spaced support pieces (41), and a gap channel (40) is formed between two adjacent support pieces (41).
4. A refrigeration device according to claim 1, characterized in that: The outer edge of the outer shell (1) is formed with an outwardly protruding flange plate (11), and a clamping plate (12) is snapped on the flange plate (11). A clamping gap (120) for clamping clothes is formed between the clamping plate (12) and the flange plate (11).
5. A refrigeration device according to claim 4, characterized in that: One end of the flange plate (11) is provided with a first buckle hole (111), and a buckle (112) is provided in the first buckle hole (111). The other end of the flange plate (11) is provided with a second buckle hole (113). One end of the clamping plate (12) is provided with a buckle (121), and the other end is provided with a snap fastener (122). The buckle (121) is inserted into the first buckle hole (111) and engaged with the buckle (112) for positioning. The snap fastener (122) passes through the second buckle hole (113) and engages with the edge of the opening of the second buckle hole (113) for fixation.
6. A refrigeration device according to claim 1, characterized in that: The fan (3) includes a housing (31), a motor installed in the housing (31), a turbine blade (32) installed in the motor, and a partition plate (33) fixed in the housing (31). The housing (31) is provided with a first air inlet (301) corresponding to the cold circulation air inlet (104), and the housing (31) is also provided with a second air inlet (302) corresponding to the external air inlet (103). The turbine blade (32) is positioned at both ends of the first air inlet (301) and the second air inlet (302) respectively. Between 02), the partition plate (33) divides the opening on the outside of the housing (31) to form a first air outlet (303) and a second air outlet (304) at the end of the interval. The first air outlet (303) and the second air outlet (304) are distributed on the outside of the turbine fan blade (32) and correspond to the first air inlet (301) and the second air inlet (302) respectively. The first air outlet (303) also corresponds to the cooling seat (22) and the circulating air outlet (105), and the second air outlet (304) also corresponds to the heat sink (23).
7. A refrigeration device according to claim 6, characterized in that: The turbine blade (32) includes a hub (321) assembled with a motor and multiple blades (322) integrally formed on the periphery of the hub (321) and spaced apart. A partition (305) is integrally connected between the middle of two adjacent blades (322), dividing the blades (322) into a first blade (306) and a second blade (307). A first airflow channel corresponding to the first air inlet (301) and the first air outlet (303) is formed between two adjacent first blades (306), and the first airflow channel also corresponds to the cooling seat (22). A second airflow channel corresponding to the second air inlet (302) and the second air outlet (304) is formed between two adjacent second blades (307), and the second airflow channel corresponds to the heat sink (23). The inner side of the partition (305) is integrally connected to the periphery of the hub (321), and the outer side of the partition (305) extends to the outer end of the blade (322).
8. A refrigeration device according to claim 6, characterized in that: The housing (31) includes a bottom shell (311) and a top cover (312) that are fastened together. The motor is mounted on the bottom shell (311) and located below the top cover (312). The second air inlet (302) is located on the top cover (312). The first air inlet (301) is located at the bottom of the bottom shell (311). The first air outlet (303) and the second air outlet (304) are located on the sides of the bottom shell (311) and the top cover (312).
9. A refrigerated garment using the refrigeration device, comprising a garment (5), characterized in that: The garment (5) is provided with a refrigeration device as described in any one of claims 1-8, wherein the cold air inlet (102), the cold circulation air inlet (104) and the circulation air inlet (105) are all exposed inside the garment (5); and the external air inlet (103) and the heat dissipation vent (101) are all exposed outside the garment (5).
Citation Information
Patent Citations
Refrigerating device and refrigerating garment using same
CN114294857A