Portable refrigeration system

Abstract

The portable refrigeration system comprises a working part, a transmission device, a storage device and a shell. The working part and the storage device are connected by the transmission device. The transmission device and the micro storage device are arranged in the shell, and the storage device is used for storing a refrigeration source. The transmission device transmits the low temperature formed by the refrigeration source stored in the storage device to the working part to perform low-temperature cryotherapy. The working temperature of the working part can be controlled by adjusting the heat exchange area of the working part and the transmission device. Since the storage device is a micro storage device built in the shell, the portable refrigeration system can be miniaturized under the premise of guaranteeing the clinical use amount demand, and designed into a pen-shaped cryotherapy instrument or a treatment pen which can be held by one hand, and the clinical use is very convenient. Moreover, since the storage device is connected with the working part by the transmission device in a short distance, the temperature regulation is more rapid and stable.

Description

Technical Field

[0001] This invention relates to a cryotherapy system for surgical treatment, and more particularly to a portable cryotherapy system. Background Technology

[0002] Cryotherapy is widely used in various clinical departments. Its working principle is to use low temperature to act on diseased tissue. Through sudden cooling, ice crystals are formed inside and outside the tissue cells, causing structural damage and lysis. At the same time, the low temperature causes cell dehydration, electrolyte concentration, and pH changes, resulting in protein denaturation and tissue metabolic death.

[0003] Commonly used refrigerants include liquid nitrogen and dry ice. They utilize the principle of phase change refrigeration, relying on the large amount of heat absorbed during the evaporation of liquid nitrogen or dry ice to achieve cooling. Because refrigerants have strict storage requirements, they are usually stored in large double-walled stainless steel cylinders connected to a main unit. During use, a long working pipe connected to the cryo-head is connected to the main unit for cryotherapy.

[0004] Because the entire system requires connection to a large gas storage tank, a main unit, and long working pipes, it is very inconvenient for clinical use, especially for moving it. Furthermore, since the cryoprobe is far from the main unit, controlling the cryoprobe's operating temperature through the main unit results in a significant delay, making it very inconvenient for clinical use.

[0005] The purpose of this invention is to improve existing cryotherapy equipment and design a portable cryotherapy system for easier clinical use. Summary of the Invention

[0006] The purpose of this invention is to miniaturize the refrigerant storage device and integrate it into the housing according to the clinical refrigerant usage, designing it as a handheld miniature portable refrigeration system, minimizing the distance between the refrigeration source and the working part, and making temperature regulation faster and more stable.

[0007] The portable refrigeration system of the present invention is characterized in that: the portable refrigeration system 100 includes a working part 1, a transmission device 2, a storage device 3, and a housing 4;

[0008] A. The working unit 1 and the storage device 3 are connected together via the transmission device 2;

[0009] B. The transmission device 2 and the storage device 3 are disposed inside the housing 4;

[0010] C. The storage device 3 is used to store the cooling source 200, and the transmission device 2 transmits the low temperature generated by the cooling source 200 stored in the storage device 3 to the working part 1 for cryotherapy.

[0011] The storage device 3 is a miniature storage device 3-1 built into the housing 4. One end of the transmission device 2 is connected to the storage device 3, and the other end is connected to the working part 1. The transmission device 2 is made of a material with excellent thermal conductivity, such as copper or silver. The cooling source 200 stored in the storage device 3 can be liquid nitrogen or dry ice. When the cooling source 200 evaporates and absorbs a large amount of heat, the storage device 3 cools down rapidly. Through the rapid heat conduction of the transmission device 2, the working part 1 cools down rapidly, allowing for clinical cryotherapy. To ensure rapid heat conduction of the transmission device 2, the transmission device 2 can be encased outside the storage device 3 to increase the heat conduction contact area. Since the storage device 3 is a miniature storage device 3-1 built into the housing 4, the portable cryotherapy system 100 can be miniaturized and designed as a pen-shaped cryotherapy device or treatment pen that can be held in one hand, while ensuring the clinical usage requirements are met. This makes it very convenient for clinical use. Moreover, since the storage device 3 is connected to the working part 1 over a short distance through the transmission device 2, temperature regulation is faster and more stable.

[0012] The portable refrigeration system 100 also includes a temperature regulating device 5. The temperature regulating device 5 can adjust the temperature of the working part 1 to adapt to different clinical use temperature requirements.

[0013] The temperature regulating device 5 is a mechanical temperature regulating device 51 or an electric temperature regulating device. The temperature regulating device 5 can be designed as mechanical, electric, magnetic, or other temperature regulating methods as needed. The applicant will not give examples of each of them here, but none of them are outside the scope of protection of this application.

[0014] The mechanical temperature regulating device 51 controls the operating temperature of the working part 1 by adjusting the heat exchange area between the working part 1 and the transmission device 2. In this invention, heat exchange between the storage device 3 and the working part 1 is achieved through conduction. When the heat exchange area between the working part 1 and the transmission device 2 is large, the working part 1 cools down quickly and has a low temperature; when the heat exchange area between the working part 1 and the transmission device 2 decreases, the working part 1 cools down slowly and has a high temperature.

[0015] The mechanical temperature regulating device 51 employs a threaded adjustment method, and / or a sliding adjustment method, and / or a tactile snap-fit ​​adjustment method. The applicant has only listed these three mechanical adjustment methods here. In practical applications, those skilled in the art can design different structures as needed to adjust the heat exchange area between the working part 1 and the transmission device 2 to achieve the purpose of temperature regulation.

[0016] The mechanical temperature regulating device 51 is equipped with a locking mechanism 51-1. When the required heat exchange area is adjusted, the locking mechanism 51-1 is activated to keep the mechanical temperature regulating device 51 stable.

[0017] The front end 41 of the housing 4 is provided with an internal thread 41-1, and the outer side of the transmission device 2 is provided with an external thread 21. After the internal thread 41-1 and the external thread 21 rotate, the distance between the cooling source 200 and the working part 1 is adjusted to adjust the heat exchange area between the working part 1 and the transmission device 2, thereby achieving the purpose of adjusting the freezing temperature of the working part 1. The internal thread 41-1 and the external thread 21 constitute the threaded temperature adjustment mechanism 51-2 of the mechanical temperature adjustment device 5.

[0018] The front end 41 of the housing 4 is provided with a positioning block 41-2, and the rear end 42 of the housing 4 is provided with a positioning groove 42-1. The connecting device 2 is fixed to the rear end 42 of the housing 4. By embedding the positioning block 41-2 in different positioning grooves 42-1, the distance between the cooling source 200 and the working part 1 is adjusted, thereby adjusting the heat exchange area between the working part 1 and the transmission device 2, and thus adjusting the freezing temperature of the working part 1. The inner positioning block 41-2 and the outer positioning groove 42-1 constitute the concave-convex locking temperature adjustment mechanism 51-3 of the mechanical temperature adjustment device 51.

[0019] The storage device 3 is a heat-insulated storage device. The storage device 3 can be directly made into a heat-insulated storage device and built into the housing 4, which has a simple structure.

[0020] The portable refrigeration system 100 also includes a heat insulation device 6, which is disposed on the outside of the storage device 3.

[0021] The heat insulation device 6 can prevent the cooling source 200 from causing a low temperature on the outside of the housing 4, so as to avoid the user being frostbitten. The heat insulation device 6 can be a separately set heat insulation layer, or it can be manufactured as a whole with the housing 4, or it can be manufactured together with the storage device 3 to form a heat-insulated storage device 31.

[0022] The portable freezing system 100 also includes a working status display device 7. The working status display device 7 can display relevant working status information such as the temperature during operation and the duration of freezing, so that medical personnel can monitor the working status in a timely manner and better prevent accidental injuries.

[0023] The portable cryotherapy system 100 also includes a pressure relief device 8. The refrigeration principle of the portable cryotherapy system 100 is to achieve rapid cooling through the large amount of heat absorbed during the evaporation phase change process of the refrigeration source 200. Since a significant volume change occurs during the evaporation phase change process, the pressure relief device 8 can ensure timely pressure relief when the pressure of the storage device changes, thus ensuring the safety of the cryotherapy process.

[0024] The portable freezing system 100 is a refillable freezing system 101. The refillable freezing system 101 can be refilled with the cooling source 200 into the storage device 3 multiple times, making it more convenient for clinical use.

[0025] The fillable refrigeration system 101 includes a refrigeration source filling device 9.

[0026] The storage device 3 has a filling port 31 at its rear end, and the housing 4 has a cap 42-2 at its rear end 42. The cap 42-2 has a sealing mechanism 42-2-1 inside it. The sealing mechanism 42-2-1 can be embedded in the filling port 31 to close the storage device (3). The filling port 31 and the cap 42-2 constitute the cooling source filling device 9.

[0027] The sealing mechanism 42-2-1 of the refrigeration source filling device 9 forms a non-completely sealed structure with the filling port 31, which can prevent the liquid refrigeration source 200 from overflowing, and also has a small gap to allow the gas of the vaporized refrigeration source 200 to escape, thus constituting the pressure relief device 8.

[0028] In clinical use, the cap 42-2 is opened to expose the filling port 31. The cooling source 200 is then filled into the storage device 3 through the filling port 31. The cap 42-2 is then closed, with the sealing mechanism 42-2-1 embedded within the filling port 31. The operating status display device 7 is turned on, and the heat exchange area between the working part 1 and the transmission device 2 is adjusted to maintain the operating temperature at the desired level. The portable cryotherapy system 100 of this invention is then held in the shell 4 to perform cryotherapy.

[0029] The portable cryotherapy system 100 of the present invention includes a working part 1, a transmission device 2, a storage device 3, and a housing 4. The working part 1 and the storage device 3 are connected together via the transmission device 2. The transmission device 2 and the miniaturized storage device 3 are disposed within the housing 4, and the storage device 3 is used to store a cryogenic source 200. The transmission device 2 transmits the cryogenic source 200 stored in the storage device 3 to the working part 1 at low temperature for cryotherapy. The working temperature of the working part 1 can be controlled by adjusting the heat exchange area between the working part 1 and the transmission device 2. Since the storage device 3 is a miniature storage device 3-1 built into the housing 4, the portable cryotherapy system 100 can be miniaturized and designed as a pen-shaped cryotherapy device or treatment pen that can be held in one hand, while ensuring the clinical dosage requirements are met, making it very convenient for clinical use. Moreover, since the storage device 3 is connected to the working part 1 over a short distance via the transmission device 2, temperature adjustment is faster and more stable. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the portable refrigeration system of the present invention, which includes a threaded temperature regulation mechanism.

[0031] Figure 1-1 yes Figure 1 The main view.

[0032] Figure 1-2 yes Figure 1-1 AA sectional view.

[0033] Figure 1-3 yes Figure 1-2 Enlarged view of point B.

[0034] Figure 1-4 yes Figure 1 Exploded view.

[0035] Figure 2 This is a cross-sectional view of the portable refrigeration system of the present invention, which includes a temperature regulation mechanism with a convex-concave locking mechanism.

[0036] Figure 2-1 yes Figure 2 Enlarged view of point C.

[0037] Figure 2-2 yes Figure 2 Exploded view.

[0038] In the above figure:

[0039] 100 is the portable refrigeration system of the present invention, 101 is the refillable refrigeration system, and 200 is the refrigeration source.

[0040] 3-1 is a micro storage device.

[0041] 1 is the working part, 2 is the transmission device, 3 is the storage device, 4 is the shell, 5 is the temperature regulation device, 6 is the heat insulation device, 7 is the working status display device, 8 is the pressure relief device, and 9 is the refrigeration source filling device.

[0042] 21 is the external thread, 31 is the filling port, 32 is the heat-conducting section, 41 is the front end of the shell, 42 is the rear end of the shell, and 51 is the mechanical temperature regulating device.

[0043] 41-1 is an internal thread, 41-2 is a positioning block, 42-1 is a positioning groove, 42-2 is a cover, 51-1 is a locking mechanism, 51-2 is a threaded temperature regulating mechanism, 51-3 is a convex-concave snap-fit ​​temperature regulating mechanism, and 42-2-1 is a sealing mechanism. Detailed Implementation

[0044] Example 1: Portable refrigeration system of the present invention with threaded temperature regulation mechanism

[0045] refer to Figures 1 to 1-4 The portable refrigeration system of this embodiment includes a working part 1, a transmission device 2, a storage device 3, and a housing 4.

[0046] refer to Figure 1-2 The transmission device 2 and the storage device 3 are disposed within the housing 4, and the working part 1 and the storage device 3 are connected together via the transmission device 2. The storage device 3 stores a cooling source 200, and the transmission device 2 transmits the low temperature generated by the cooling source 200 stored in the storage device 3 to the working part 1 for cryotherapy.

[0047] The cooling source 200 stored in the storage device 3 can be liquid nitrogen or dry ice. When the cooling source 200 evaporates and absorbs a large amount of heat, the storage device 3 cools down rapidly. Through the rapid heat conduction of the transmission device 2, the working part 1 cools down rapidly, and clinical cryotherapy can be performed.

[0048] In this embodiment, the storage device 3 is a miniature storage device 3-1 built into the housing 4, and the transmission device 2 is connected at one end to the storage device 3 and at the other end to the working part 1.

[0049] The transmission device 2 is made of materials with excellent thermal conductivity, such as copper and silver.

[0050] To ensure rapid heat conduction, the end of the transmission device 2 connected to the storage device 3 is hollow in a bowl shape, while the end of the storage device 3 near the working part 1 is cylindrical and has a protruding heat-conducting section 32. The transmission device 2 can cover the end of the storage device 3, and the heat-conducting section 32 is embedded in the transmission device 2 to increase the heat conduction contact area.

[0051] In this embodiment, the portable refrigeration system 100 further includes a temperature regulating device 5. The temperature regulating device 5 can adjust the temperature of the working part 1 to adapt to different clinical use temperature requirements.

[0052] The temperature regulating device 5 can be a mechanical temperature regulating device 51 or an electric temperature regulating device. The temperature regulating device 5 can be designed as mechanical, electric, magnetic, or other temperature regulating methods as needed. The applicant will not give examples of each of them here, but none of them are outside the scope of protection of this application.

[0053] In this embodiment, the temperature regulating device 5 is a mechanical temperature regulating device 51. The mechanical temperature regulating device 51 controls the working temperature of the working part 1 by adjusting the heat exchange area between the working part 1 and the transmission device 2. In this invention, heat exchange between the storage device 3 and the working part 1 is achieved through conduction. When the heat exchange area between the working part 1 and the transmission device 2 is large, the working part 1 cools down quickly and has a low temperature; when the heat exchange area between the working part 1 and the transmission device 2 decreases, the working part 1 cools down slowly and has a high temperature.

[0054] The mechanical temperature regulating device 51 is a threaded temperature regulating mechanism 51-2.

[0055] refer to Figure 1 and Figure 1-1 The housing 4 is divided into a front end 41 and a rear end 42, and the front end 41 and the rear end 42 can rotate relative to each other.

[0056] refer to Figure 1-2 and Figure 1-3 The front end 41 of the housing 4 is provided with an internal thread 41-1, and the outer side of the transmission device 2 is provided with an external thread 21. After the internal thread 41-1 and the external thread 21 rotate, the distance between the cooling source 200 and the working part 1 is adjusted to adjust the heat exchange area between the working part 1 and the transmission device 2, thereby achieving the purpose of adjusting the freezing temperature of the working part 1. The internal thread 41-1 and the external thread 21 constitute the threaded temperature adjustment mechanism 51-2 of the mechanical temperature adjustment device 5.

[0057] The mechanical temperature regulating device 51 is equipped with a locking mechanism 51-1. When the required heat exchange area is adjusted, the locking mechanism 51-1 operates, keeping the mechanical temperature regulating device 51 stable. In this embodiment, the heat exchange area between the working part 1 and the transmission device 2 is adjusted by rotating the internal thread 41-1 and the external thread 21. The locking mechanism 51-1 can be constructed by designing the internal thread 41-1 and / or the external thread 21 as self-locking threads.

[0058] refer to Figure 1-3 In this embodiment, the portable refrigeration system 100 also includes a heat insulation device 6. The heat insulation device 6 is disposed on the outside of the storage device 3 and adopts an air heat insulation method. It uses a double-layer cavity structure to achieve heat insulation, so as to prevent the cooling source 200 from causing the outside of the shell 4 to be cold, so as to avoid the user being frostbitten.

[0059] The heat insulation device 6 can be a separately installed heat insulation layer, or it can be manufactured as a whole with the shell 4, or it can be manufactured together with the storage device 3 to form a heat-insulated storage device 31.

[0060] The portable freezing system 100 also includes a working status display device 7. The working status display device 7 can display relevant working status information such as the temperature during operation and the duration of freezing, so that medical personnel can monitor the working status in a timely manner and better prevent accidental injuries.

[0061] In this embodiment, the portable freezing system 100 is a refillable freezing system 101. The refillable freezing system 101 can be refilled with the cooling source 200 into the storage device 3 multiple times, making it more convenient for clinical use.

[0062] The fillable refrigeration system 101 includes a refrigeration source filling device 9.

[0063] refer to Figure 1-3 and Figure 1-4 The storage device 3 has a filling port 31 at its rear end, and the housing 4 has a cap 42-2 at its rear end. The cap 42-2 has a sealing mechanism 42-2-1 inside it. The sealing mechanism 42-2-1 can be embedded in the filling port 31 to close the storage device (3). The filling port 31 and the cap 42-2 constitute the cooling source filling device 9.

[0064] The sealing mechanism 42-2-1 of the refrigeration source filling device 9 forms a non-completely sealed structure with the filling port 31, which can prevent the liquid refrigeration source 200 from overflowing, and also has a small gap to allow the gas of the vaporized refrigeration source 200 to escape, thus constituting the pressure relief device 8.

[0065] The portable cryotherapy system 100 achieves rapid cooling by absorbing a large amount of heat during the evaporation phase change process of the cooling source 200. Since the evaporation phase change process causes a significant volume change, the pressure relief device 8 can ensure timely pressure relief when the pressure of the storage device changes, thus ensuring the safety of the cryotherapy process.

[0066] In clinical use, the cap 42-2 is opened to expose the filling port 31. The cooling source 200 is then filled into the storage device 3 through the filling port 31. The cap 42-2 is then closed, with the sealing mechanism 42-2-1 embedded within the filling port 31. The operating status display device 7 is turned on, and the rear end 42 of the housing 4 is rotated to adjust the heat exchange area between the working part 1 and the transmission device 2, thereby controlling the operating temperature at the desired level. Cryotherapy can then be performed by holding the housing 4 of the portable cryotherapy system 100 of this invention.

[0067] In this embodiment, since the storage device 3 is a miniature storage device 3-1 built into the housing 4, the portable cryotherapy system 100 can be miniaturized and designed as a pen-shaped cryotherapy device or treatment pen that can be held in one hand, while ensuring the clinical usage requirements are met, making it very convenient for clinical use. Moreover, since the storage device 3 is connected to the working part 1 over a short distance through the transmission device 2, temperature adjustment is faster and more stable.

[0068] Example 2: Portable refrigeration system of the present invention with a temperature regulation mechanism including a convex-concave clip.

[0069] refer to Figures 2 to 2-2 The difference between this embodiment and embodiment 1 is that in this embodiment, the temperature adjustment mechanism 5 is a temperature adjustment mechanism 51-3 with a concave-convex clamp.

[0070] refer to Figure 2-2 The front end 41 and rear end 42 of the housing 4 can be pushed back and forth.

[0071] refer to Figure 2-1 and Figure 2-2 The front end 41 of the housing 4 is provided with a positioning block 41-2, and the rear end 42 of the housing 4 is provided with a positioning groove 42-1. The connecting device 2 is fixed to the rear end 42 of the housing 4. By embedding the positioning block 41-2 in different positioning grooves 42-1, the distance between the cooling source 200 and the working part 1 is adjusted, thereby adjusting the heat exchange area between the working part 1 and the transmission device 2, and thus adjusting the freezing temperature of the working part 1. The inner positioning block 41-2 and the outer positioning groove 42-1 constitute the concave-convex locking temperature adjustment mechanism 51-3 of the mechanical temperature adjustment device 51.

[0072] Since the positioning groove 42-1 is embedded in the positioning block 41-2, the mutual fixation of the positioning groove 42-1 and the positioning block 41-2 constitutes the locking mechanism 51-1.

[0073] In clinical use, the cap 42-2 is opened to expose the filling port 31. The cooling source 200 is then filled into the storage device 3 through the filling port 31. The cap 42-2 is then closed, and the sealing mechanism 42-2-1 is embedded in the filling port 31. The working status display device 7 is turned on, and the front end 41 and rear end 42 of the housing 4 are pushed back and forth so that the positioning hole 22 is embedded in different positioning blocks 41-2 as needed. The heat exchange area between the working part 1 and the transmission device 2 is adjusted so that the working temperature is controlled at the required temperature. By holding the housing 4 of the portable cryotherapy system 100 of the present invention, cryotherapy can be performed.

[0074] The applicant has only specifically listed two specific temperature adjustment mechanisms: threaded adjustment and concave-convex clamp adjustment. In practical applications, those skilled in the art can also design various other structures, such as sliding groove adjustment, to adjust the heat exchange area between the working part 1 and the transmission device 2 to achieve the purpose of temperature regulation. The applicant will not give examples of each of these, but they all fall within the scope of protection of this application.

[0075] It should be noted that the structures disclosed and described herein can be replaced by other structures with the same effect, and the embodiments described herein are not the only structures for implementing the present invention. Although preferred embodiments of the present invention have been described and illustrated herein, those skilled in the art will understand that these embodiments are merely illustrative, and those skilled in the art can make numerous variations, modifications, and substitutions without departing from the present invention. Therefore, the scope of protection of the present invention should be defined in accordance with the spirit and scope of the appended claims.

Claims

1. A portable refrigeration system, characterized in that: The portable refrigeration system (100) includes a working part (1), a transmission device (2), a storage device (3), a housing (4), and a temperature regulating device (5). A. The working unit (1) and the storage device (3) are connected together via the transmission device (2); B. The storage device (3) is a miniature storage device (3-1) built into the housing (4); the transmission device (2) and the storage device (3) are disposed in the housing (4); C. The storage device (3) is used to store the cooling source (200), and the transmission device (2) transmits the low temperature formed by the cooling source (200) stored in the storage device (3) to the working part (1) for cryotherapy; since the storage device (3) is connected to the working part (1) over a short distance through the transmission device (2), the temperature adjustment is fast and stable; D. The temperature regulating device (5) is a mechanical temperature regulating device (51), which controls the working temperature of the working part (1) by adjusting the heat exchange area between the working part (1) and the transmission device (2); E. The mechanical temperature regulating device (51) adopts a threaded adjustment method or a convex-concave clamp adjustment method; F. The front end (41) of the housing (4) is provided with an internal thread (41-1), and the outside of the transmission device (2) is provided with an external thread (21). After the internal thread (41-1) and the external thread (21) rotate, the distance between the cooling source (200) and the working part (1) is adjusted to adjust the heat exchange area between the working part (1) and the transmission device (2), so as to achieve the purpose of adjusting the freezing temperature of the working part (1). The internal thread (41-1) and the external thread (21) constitute the threaded temperature adjustment mechanism (51-2) of the mechanical temperature adjustment device (5). G. The front end (41) of the housing (4) is provided with a positioning block (41-2), and the rear end (42) of the housing (4) is provided with a positioning groove (42-1). The transmission device (2) is fixed to the rear end (42) of the housing (4). The positioning block (41-2) is embedded in different positioning grooves (42-1) to adjust the distance between the cooling source (200) and the working part (1), thereby adjusting the heat exchange area between the working part (1) and the transmission device (2), and thus adjusting the freezing temperature of the working part (1). The positioning block (41-2) and the positioning groove (42-1) constitute the concave-convex locking temperature adjustment mechanism (51-3) of the mechanical temperature adjustment device (51).

2. The portable refrigeration system according to claim 1, characterized in that: The mechanical temperature regulating device (51) is equipped with a locking mechanism (51-1).

3. The portable refrigeration system according to claim 1, characterized in that: The storage device (3) is a thermally insulated storage device (31).

4. The portable refrigeration system according to claim 1, characterized in that: The portable refrigeration system (100) also includes a heat insulation device (6) disposed on the outside of the storage device (3).

5. The portable refrigeration system according to claim 1, characterized in that: The portable refrigeration system (100) also includes a working status display device (7).

6. The portable refrigeration system according to claim 1, characterized in that: The portable refrigeration system (100) also includes a pressure relief device (8).

7. The portable refrigeration system according to claim 1, characterized in that: The portable refrigeration system (100) is a refillable refrigeration system (101).

8. The portable refrigeration system according to claim 7, characterized in that: The fillable refrigeration system (101) includes a refrigeration source filling device (9).

9. The portable refrigeration system according to claim 8, characterized in that: The storage device (3) has a filling port (31) at its rear end, and the housing (4) has a cap (42-2) at its rear end (42). The cap (42-2) has a sealing mechanism (42-2-1) inside it. The sealing mechanism (42-2-1) can be embedded in the filling port (31) to seal the storage device (3). The filling port (31) and the cap (42-2) constitute the cooling source filling device (9).

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