Freezing hot compress equipment

By designing a cryogenic heating device with a boat-shaped hull and exposed radiators, the problems of large device size and low heat dissipation efficiency were solved, achieving both portability and efficient heat dissipation.

CN224056172UActive Publication Date: 2026-03-31睿星国际股份有限公司
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-16
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

Existing cryotherapy devices are bulky, inconvenient to carry, and have low heat dissipation efficiency, failing to meet the needs of portable use.

Method used

Designed with a boat-shaped housing, the fan and heat sink are located in the central recess, with protrusions at both ends of the housing. It is equipped with clips for easy binding, and the semiconductor cooling chip and heat sink are exposed. It is equipped with a display and temperature feedback system to achieve rapid heat dissipation and temperature control.

Benefits of technology

It achieves miniaturization of the equipment, making it easy to carry, with high heat dissipation efficiency, precise temperature control, and convenient use, preventing frostbite or burns.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224056172U_ABST
    Figure CN224056172U_ABST
Patent Text Reader

Abstract

The utility model discloses a freezing hot compress device which comprises a shell, a semiconductor chilling plate, a fan, a radiator, a metal cover, a main control board, a display and a battery, the shell is in a ship shape, two ends of the shell are provided with protruding parts, and the middle of the shell is provided with a concave part; a control panel, a main control board and a battery are arranged at the two ends of the ship shape respectively, and a fan and a radiator are arranged in a middle concave part. According to the utility model, the shell is designed to be ship-shaped, and meanwhile, the fan and the radiator are arranged in the middle concave part of the shell, so that the occupied space can be effectively reduced, and the freezing hot compress instrument is more flat in structure, small in size and convenient to carry; meanwhile, the top of the semiconductor freezing piece is connected with a huge heat dissipation device composed of a fan and a heat dissipation device, the huge and exposed heat dissipation pieces are beneficial to more effective heat dissipation and rapid freezing, heat dissipation is facilitated, and the heat dissipation efficiency is high.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model belongs to the field of physiotherapy and rehabilitation equipment technology, specifically relating to a cryotherapy / heat therapy device with freezing or hot compress functions. Background Technology

[0002] As people's living standards improve, they are paying more and more attention to fitness. However, accidents often occur during exercise, leading to injuries, which necessitates the use of physiotherapy and rehabilitation equipment for freezing and heating. Freezing and heating are physical therapies. Freezing is mainly used to lower the local skin temperature, causing subcutaneous blood vessels to constrict and blood flow to decrease, thereby relieving pain and preventing swelling from worsening. Heating, on the other hand, is mainly used to promote local blood circulation in the skin, causing blood vessels to dilate, accelerating the dissipation of bruises, or relieving muscle pain or tension.

[0003] Typically, people use freezing devices and heating devices for both freezing and heating. Freezing is usually achieved using ice packs, while heating is achieved by heating a heating pad. With the emergence of new technologies using semiconductor cooling chips, freezing and heating can be combined into a single device, such as the portable hot and cold compress device disclosed in patent application 202322783493.8. This device includes a main housing and a handle housing. The main housing, arranged axially from front to back, comprises a freezing head, a TEC cooling chip, a heat dissipation module, a ventilation duct, a fan, and a perforated rear cover. A main control board is located on the inner wall of the main housing at the ventilation duct. The TEC cooling chip is tightly fitted between the freezing head and the heat dissipation module. The main control board controls the direction of the current to activate the TEC cooling chip, thus achieving the cooling or heating function of the freezing head. A temperature sensor is also included, located in a groove inside the freezing head. This technology utilizes the characteristic of the TEC cooling chip to simultaneously cool and heat, allowing for free switching between cooling and heating modes via the main control board's current direction, and enabling rapid heat exchange around the heat dissipation module via the fan.

[0004] However, the device is large and takes up a lot of space, so it cannot meet the requirement of being carried around.

[0005] For example, US Patent 11940163B1 discloses a portable temperature control device, including a housing, a controllable temperature element having a first surface and a second surface, a heat sink adjacent to the first surface of the controllable temperature element, a fan, a heat diffuser including a first side and a second side, the second side being opposite to the first side and in contact with the second surface of the controllable temperature element, a support member, and a temperature controller connected to the controllable temperature element inside the housing. The controllable temperature element is a thermoelectric cooler, capable of achieving temperature control.

[0006] However, the structure of the patent application is too complex and requires a heat diffuser to contact the temperature control element in order to complete the heat transfer, which is inconvenient to use. At the same time, the stacked design of the fan, heat sink, heat diffuser, temperature control element, etc. increases the size of the device and is not conducive to carrying and use. Moreover, the fan is set inside the housing, which results in low heat dissipation efficiency of the fan and affects the heat dissipation effect. Therefore, it is in urgent need of improvement. Utility Model Content

[0007] To address the aforementioned problems, the primary objective of this invention is to provide a cryo-heating device that is small in size, easy to use, portable, and efficient at dissipating heat.

[0008] The applicant's research found that cryotherapy devices need to be carried and used frequently, such as in gyms. As a result, the conventional contact between the device and the skin becomes inconvenient, requiring a strap to prevent it from falling off and ensure normal use. Therefore, the structure needs to be improved to meet people's usage needs, while also facilitating heat dissipation and achieving high heat dissipation efficiency.

[0009] To achieve the above objectives, the technical solution of this utility model is as follows.

[0010] A cryotherapy / heating device includes a housing, a thermoelectric cooler, a fan, a heat sink, a metal cover, a main control board, a display, and a battery, wherein:

[0011] The shell is boat-shaped, with protrusions at both ends and a concave part in the middle; the two ends of the boat shape are respectively equipped with a control panel, a main control board and a battery, while the concave part in the middle is equipped with a fan and a heat sink.

[0012] The fan is located in the middle recess of the housing, adjacent to the heat sink, and is used to dissipate heat from the heat sink.

[0013] The heat sink is also located in the middle recess of the housing, in contact with the fan and the semiconductor cooling chip, for heat dissipation.

[0014] The semiconductor cooling chip can simultaneously cool and heat, thereby completing the functions of freezing and hot compress. The semiconductor cooling chip is disposed on one side of the heat sink and located in the middle recess of the housing.

[0015] The metal cover is disposed on the side of the semiconductor cooling chip to protect it; at the same time, the metal cover has good conductivity, which can quickly transfer the freezing and heating effects to the outside; the metal cover is disposed on the housing.

[0016] The main control board, located inside the housing, enables temperature control and cooling / heating control of the semiconductor refrigeration chip, and implements specific temperature control through the control panel;

[0017] The display shows the temperature control and has a control switch on one side. The display and control switch are electrically connected to the main control board, and the main control board realizes the control of freezing and hot compress.

[0018] The battery is housed inside the casing and located at one end of the boat-shaped casing. It is electrically connected to the display and the main control board, providing power to the display and the main control board.

[0019] This invention designs the shell in a boat shape, and places the fan and heat sink in the middle recess of the shell, which can effectively reduce the space occupied, making the structure of the cryotherapy device flatter, smaller in size, and easier to carry. At the same time, the top of the semiconductor cryotherapy plate is connected to a huge heat dissipation device consisting of a fan and heat sink. The huge and exposed heat sink helps to dissipate heat more effectively and freeze quickly, making heat dissipation convenient and efficient.

[0020] Furthermore, the radiator has a recessed portion in the middle, and a fan is installed in the recessed portion. This utilizes the space of the radiator to install the fan, which can improve heat dissipation efficiency and reduce the space occupied.

[0021] Furthermore, a protective plate is provided on the top of the fan, which is also located on top of the heat sink. Both the protective plate and the heat sink are made of metal to facilitate heat dissipation.

[0022] Furthermore, the protrusions at both ends of the housing are the main board module cavity and the battery box cavity. The main board module cavity has a display control board and a main control board. The display control board is the control board for the display screen and is electrically connected to the main control board. The battery box cavity contains the battery pack.

[0023] Furthermore, the protrusions at both ends of the housing are made of plastic parts, which have inwardly protruding fastening walls. In this way, the plastic parts on the left and right sides fasten the radiator and fix it in place.

[0024] Furthermore, the device also includes a buckle that covers the housing and has a buckle hole through which an attached strap is passed for fixation.

[0025] Furthermore, the buckle protrudes from both ends of the housing, and the protruding part has a buckle hole for passing through the strap to attach the cryotherapy device to the human body for use.

[0026] Furthermore, the buckle has its two ends bent inwards, with the bent parts protruding from the housing and having buckle holes, making it easy to pass through straps and attach the cryotherapy device to the human body for use.

[0027] Meanwhile, the side of the buckle is also provided with a buckle head, which extends downward and snaps between the radiator and the housing to facilitate fixing the buckle.

[0028] Furthermore, two or more buttons are arranged side-by-side on one side of the display screen for temperature control. These buttons include functions for freezing, heating, comparison, and power on / off.

[0029] Furthermore, the semiconductor cooling chip is surrounded by heat insulation cotton, which is ring-shaped. The semiconductor cooling chip is embedded in the heat insulation cotton so that no heat is dissipated around the semiconductor cooling chip, thus providing both freezing and heating functions from one direction.

[0030] Furthermore, the device is also equipped with a thermometer, which is implemented by an NTC thermistor. The NTC thermistor is placed between the metal cover in contact with the body and the semiconductor cooling chip to obtain the real-time temperature. The temperature information received by the NTC is transmitted to the main control board, which will adjust the current according to the predetermined required temperature or the limited temperature to control the temperature of the semiconductor cooling chip.

[0031] The cryo-heat compress device implemented by this utility model can have both freezing and heat compress effects.

[0032] Furthermore, this utility model designs the shell in the shape of a boat, and places the fan and heat sink in the middle recess of the shell, which can effectively reduce the space occupied, making the structure of the cryotherapy device flatter, smaller in size, and easier to carry.

[0033] Meanwhile, by exposing the left and right sides of the radiator to the air, the huge radiator, in addition to its large size and fast cooling, is also directly exposed to the air without being enclosed by a shell. Hot air does not need to pass through any wind tunnels or air vents, which can dissipate heat more effectively.

[0034] Furthermore, it is equipped with a display screen and indicator lights. Normally, it displays the temperature, allowing consumers to directly observe the working status and avoid confusing the hot and cold compress functions. At the same time, it prevents frostbite caused by excessive cold or burns caused by excessive heat. Attached Figure Description

[0035] Figure 1 This is a perspective view of the cryotherapy device implemented by this utility model.

[0036] Figure 2 This is a perspective view of the cryo-heating device with buckles implemented by this utility model.

[0037] Figure 3 yes Figure 1 The front view of the clip-on cryotherapy device is shown.

[0038] Figure 4 yes Figure 1 The image shows a side view of a cryotherapy device with clips.

[0039] Figure 5 yes Figure 1The image shows a rear view of a cryotherapy device with clips.

[0040] Figure 6 yes Figure 1 The exploded view shown is of a device with snap-fit ​​cooling and heating mechanisms.

[0041] Figure 7 yes Figure 1 The diagram shows the housing of a cryotherapy device with snap-fit ​​fasteners.

[0042] Figure 8 yes Figure 1 The exploded view shown is of the housing of the clip-on cryotherapy device.

[0043] Figure 9 This is the circuit diagram of the main control board of the cryo-heat therapy device implemented by this utility model.

[0044] In the diagram: 1. Display, 2. Control buttons, 3. Fan, 4. Clip, 5. Protective board, 6. Housing, 7. Heat sink, 8. Metal cover, 9. Display control board, 10. Main control board, 11. Semiconductor cooling chip, 12. Thermal insulation cotton, 13. NTC thermistor, 14. Battery, 31. Light guide cover, 32. Lamp board, 41. Clip hole, 42. Clip head, 61. Top cover, 62. Bottom cover, 63. Bottom cover, 64. Display slot, 611. Top left cover, 612. Top right cover, 621. Bottom left cover, 622. Bottom right cover. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0046] Appendix Figure 1-8 As shown, the cryo-heating device implemented by this utility model mainly includes a housing 6, a semiconductor cooling chip 11, a fan 3, a heat sink 7, a metal cover 8, a main control board 10, a display 1, and a battery 14. Among them, Figure 1 This is a diagram without the 4-clip buckle. Figure 2 This is a schematic diagram with buckle 4.

[0047] The housing 6 ( Figure 7 As shown, it is boat-shaped with protrusions at both ends and a concave part in the middle; the two ends of the boat shape are respectively equipped with a display 1, a main control board 10 and a battery 14, while the concave part in the middle is equipped with a fan 3 and a heat sink 7.

[0048] Combination Figure 7As shown, the housing 6 is formed by an upper end cover 61, a lower end cover 62, a lower cover 63, an upper left side cover 611, an upper right side cover 612, a lower left side cover 621, and a lower right side cover 622. The upper end cover 61, the upper left side cover 611, and the upper right side cover 612 form the mainboard module cavity; the lower end cover 62, the lower left side cover 621, and the lower right side cover 622 enclose the battery box cavity. The mainboard module cavity has a display control board 9 and a main control board 10. The display control board 9 is the control board for the display screen 1 and is electrically connected to the main control board 10. The battery box cavity houses the battery 14. The mainboard module cavity and the battery box cavity are located at both ends of the housing 6, forming boat-shaped protrusions, while the lower cover 63 is a boat-shaped recess. This separate arrangement of space-consuming components helps reduce space and facilitates a reduction in the size of the equipment.

[0049] The protrusions at both ends of the housing 6 are made of plastic parts, each with a retaining wall protruding towards a central recess. The fan 3 and radiator 7 are housed in this recess, allowing the plastic parts on both sides to secure the radiator 7. Simultaneously, the lower cover 63 has serrated edges that engage with the radiator's heat sink fins, further securing the radiator.

[0050] The fan 3 is located in the middle recess of the housing 6, adjacent to the heat sink 7, and is used to dissipate heat from the heat sink 7. The fan 3 is equipped with a light guide cover 31 and a lamp plate 32, which are existing structures and will not be described in detail here.

[0051] A protective plate 5 is also covered on the fan 3. The top surface of the fan 3 is flush with the top surface of the heat sink 7, so that the protective plate 5 is also located on the top of the heat sink 7. Both the protective plate 5 and the heat sink 7 are made of metal, which facilitates heat dissipation.

[0052] The heat sink 7 is also located in the middle recess of the housing 6, in contact with the fan 3 and the thermoelectric cooler 11, for heat dissipation. That is, one side of the heat sink 7 contacts the thermoelectric cooler 11, and the other side is embedded with the fan 3, so that the heat generated by the thermoelectric cooler 11 can be quickly dissipated.

[0053] The heat sink 7 occupies almost the entire recessed space of the housing 6. The semiconductor cooling chip 11 is sheet-shaped and attached to one side of the heat sink 7. At the same time, there is a recess on the other side of the heat sink 7, in which a fan 3 is installed. This allows the left and right sides of the heat sink 7 to be exposed to the air. In addition to its large size and fast cooling, the huge heat sink 7 is not surrounded by the housing and is directly exposed to the air. Hot air does not need to pass through any wind tunnel or air outlet, which can dissipate heat more effectively.

[0054] The semiconductor cooling chip 11 can simultaneously cool and heat, thereby completing the functions of freezing and hot compress. The semiconductor cooling chip is disposed on one side of the heat sink and located in the middle recess of the housing 6.

[0055] Typically, the semiconductor cooling chip 11 is a TEC cooling chip, whose anode uses a treated aluminum alloy hot and cold plate, which is durable and easy to clean. It has a built-in Peltier module, high thermoelectric efficiency, and significantly improved cooling performance, and has excellent cooling and heat dissipation performance.

[0056] For ease of use, heat insulation cotton 12 is provided around the semiconductor cooling chip 11, such as... Figure 5 As shown, the heat insulation cotton 12 is ring-shaped, which can embed the semiconductor cooling chip 11 into the heat insulation cotton 12 so that the semiconductor cooling chip 11 does not generate heat around it, and can provide freezing and heating functions from one direction.

[0057] Meanwhile, the semiconductor cooling chip 11 and the heat insulation cotton 11 are arranged on the inner side of the lower cover 63, and a metal cover 8 covers the semiconductor cooling chip 11 and the heat insulation cotton 12. The metal cover 8 has good conductivity and can quickly transfer the freezing effect and the heat treatment effect to the outside. The metal cover 8 makes it easy for people to touch, so as to achieve good freezing and heat treatment.

[0058] The metal cover 8 is disposed on the side of the semiconductor cooling chip 11 to protect the semiconductor cooling chip 11; at the same time, the metal cover is disposed on the lower cover 63.

[0059] The main control board 10, housed within the casing 6, enables temperature control and the cooling and heating control of the semiconductor refrigeration chip 11, and implements specific temperature control. The control circuit of the main control board is as follows: Figure 9 As shown.

[0060] The display 1 displays the temperature control and has a control switch 2 on one side. Both the display 1 and the control switch 2 are electrically connected to the main control board 10. The main control board 10 controls the freezing and heating. Specifically, the display 1 is connected to a display control board 9, which can better control the display results. The display control board 9 is electrically connected to the main control board 10 and can be integrated with the main control board 10 when needed.

[0061] The battery 14 is disposed inside the housing 6 and located at one end of the boat-shaped housing. It is electrically connected to the display 1 and the main control board 10 to provide power to the display and the main control board.

[0062] The buckle 4 is only needed when binding. The buckle 4 covers the protective plate 5 and the housing 6 on the fan 3 and has a buckle hole 41 through which the attached strap passes for fixation. Specifically, the buckle 4 protrudes from both ends of the housing 6, and the protruding part has a buckle hole 41 for passing through the strap to bind the cryotherapy device to the human body for use.

[0063] Meanwhile, the two ends of the buckle 4 are bent inward, the bent part protrudes from the housing 6, and the bent part has a buckle hole 41 to facilitate the passing of the strap.

[0064] Meanwhile, a buckle 42 is also provided on the side of the buckle 4. The buckle 42 extends downward and is fastened between the radiator 7 and the housing 6 to facilitate the fixing of the buckle 4.

[0065] Thus, this utility model designs the shell in the shape of a boat, and places the fan and heat sink in the middle recess of the shell, which can effectively reduce the space occupied, making the structure of the cryotherapy device flatter, smaller in size, and easier to carry; at the same time, the top of the semiconductor cryotherapy plate is connected to a huge heat dissipation device consisting of a fan and heat sink. The huge and exposed heat sink helps to dissipate heat more effectively and freeze quickly, making heat dissipation convenient and efficient.

[0066] The upper part of the upper cover 61 has a display slot 64, and the display 1 is set in the display slot 64. Control buttons 2 are provided on its side. The display screen is used to display the real-time temperature, facilitating temperature control during freezing and hot compresses. The display screen displays both temperature and time. The control buttons 2 are used to control the temperature and the current status, including freezing, hot compress, comparison, and on / off functions.

[0067] Normally, control button 2 has three buttons, corresponding to three functions: freezing, hot compress, and contrast treatment.

[0068] To begin cryotherapy, press and hold the cryotherapy button. This will activate the treatment; the indicator light on panel 32 will turn blue, and the cryotherapy indicator will also light up. The default cryotherapy level is 2. Briefly press the cold treatment button to switch to level 1, and briefly press the cryotherapy button again to switch back to level 2. To turn on the device, press and hold the cryotherapy button.

[0069] To begin heat therapy, press and hold the heat therapy button. This will activate the treatment and turn the indicator light on panel 32 red, as will the red treatment indicator. The default heat therapy level is Level 1.

[0070] Briefly press the heat therapy button to switch to level 2.

[0071] To begin contrast therapy, which alternates between 5 minutes of cold therapy and 3 minutes of heat therapy, press and hold the contrast therapy button. This will activate the treatment; the indicator light will switch between blue and red to indicate different treatments, and the contrast therapy indicator light will also illuminate. To turn on the device, press and hold the contrast therapy button.

[0072] To ensure a good user experience, this invention includes a temperature feedback function, ensuring safety and reliability. Specifically, a thermometer is provided, implemented using an NTC thermistor 13, which is positioned between the metal cover 8 that contacts the body and the thermoelectric cooler 11. During operation, the NTC continuously measures the temperature of the ice or heat application area / patch. The temperature information received by the NTC is transmitted to the main control board 10. Upon receiving the temperature data, the main control board 10 adjusts the current according to the predetermined required or limited temperature, thereby controlling the temperature of the thermoelectric cooler 11. For example, the preset temperature may be a minimum of 4 degrees Celsius or a maximum of 53 degrees Celsius. When these maximum or minimum limits are reached, the main control board controls the current to prevent the temperature from exceeding the operating range. This is to prevent frostbite due to excessive cold or burns due to overheating.

[0073] In summary, this utility model designs the shell in the shape of a boat, and places the fan and heat sink in the middle recess of the shell, which can effectively reduce the space occupied, making the structure of the cryotherapy device flatter, smaller in size, and easier to carry.

[0074] Furthermore, this utility model exposes the left and right sides of the radiator to the air. In addition to its large size and fast cooling, the huge radiator is not enclosed by a shell and is directly exposed to the air. Hot air does not need to pass through any wind tunnel or air outlet, which can dissipate heat more effectively.

[0075] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cold compress device, characterized in that The application relates to a semiconductor refrigeration device, which comprises a shell, a semiconductor refrigeration sheet, a fan, a radiator, a metal cover, a main control board, a display and a battery. The shell is in a boat type, has protruding parts at two ends and a recessed part in the middle; the two ends of the boat type are respectively provided with a control panel, the main control board and the battery, and the recessed part in the middle is provided with the fan and the radiator; The fan is arranged in the recessed part in the middle of the shell and is arranged adjacent to the radiator and is used for leading out heat from the radiator; The radiator is also arranged in the recessed part in the middle of the shell and is in contact with the fan and the semiconductor refrigeration sheet and is used for heat dissipation; The semiconductor refrigeration sheet can refrigerate and heat at the same time, is arranged on one side of the radiator and is located in the recessed part in the middle of the shell; The metal cover is arranged on the side of the semiconductor refrigeration sheet and is arranged on the shell; the metal cover has good conduction function and can quickly transfer the refrigeration effect and the hot compress effect to the outside world; The main control board is arranged in the shell and is used for realizing refrigeration and heating control of the semiconductor refrigeration sheet and realizing specific temperature control; The display is used for realizing temperature control display and has a control switch on one side; the display and the control switch are electrically connected with the main control board and realize refrigeration and hot compress control through the main control board; The battery is arranged in the shell and is located at one end of the boat type shell, is electrically connected with the display and the main control board and provides power for the display and the main control board.

2. The cold compress apparatus of claim 1, wherein The recessed part in the middle of the radiator is provided with the fan.

3. The cold compress apparatus of claim 2, wherein The top of the fan is provided with a protection plate; meanwhile, the protection plate is located on the top of the radiator; the protection plate and the radiator are both made of metal.

4. The cold compress apparatus of claim 1, wherein The protruding parts at the two ends of the shell are a main board module cavity and a battery box inner cavity; the main board module cavity is provided with a display screen control board and a main control board; the display screen control board is a control board of the display screen and is electrically connected with the main control board; the battery box inner cavity is provided with a battery pack.

5. The cold compress apparatus of claim 4, wherein The protruding parts at the two ends of the shell are plastic pieces; the plastic pieces have inwardly protruding buckling walls; the left and right plastic pieces buckle the radiator.

6. The cold compress apparatus of claim 1, wherein The device further comprises buckles which are arranged on the shell and have buckling holes through which fixing bands are arranged.

7. A cold compress device as claimed in claim 6, characterised in that The buckles protrude from the two ends of the shell and have buckling holes at the protruding parts.

8. The cold compress apparatus of claim 7, wherein The two ends of the buckles are inwardly bent; the bent parts protrude from the shell and have buckling holes; meanwhile, the side surfaces of the buckles are provided with buckling heads which extend downward and are arranged between the radiator and the shell.

9. The cold compress apparatus of claim 1, wherein The semiconductor refrigeration sheet is provided with heat insulation cotton around the periphery; the heat insulation cotton is annular; and the semiconductor refrigeration sheet is embedded in the heat insulation cotton.

10. The cold compress apparatus of claim 1, wherein The device is further provided with a thermometer which is realized through an NTC thermistor; and the NTC thermistor is arranged between the metal cover and the semiconductor refrigeration sheet.

Citation Information

Patent Citations

  • Portable cold and hot compress instrument

    CN221786962U

  • Portable temperature controlled device

    US11940163B1