Liquid nitrogen tank for cell storage

Abstract

This utility model discloses a liquid nitrogen tank for cell storage, relating to the field of cell storage technology. It includes a main body, a cell storage component, and a liquid nitrogen leveling mechanism. The cell storage component is located on top of the main body, and the liquid nitrogen leveling mechanism is connected to the main body. The cell storage component includes a sealing cap, a sealing plug, a liquid nitrogen inlet, and a cell storage dish support. The sealing plug is located in the center of the sealing cap, the liquid nitrogen inlet is located on one side of the sealing cap, and the cell storage dish support is located inside the main body. In the structural design of this liquid nitrogen tank for cell storage, by setting up a connecting pipe, a left inlet, and a right inlet in the liquid nitrogen leveling mechanism, different positions inside the main body are connected to the connecting pipe using the principle of the connecting pipe, thereby balancing the pressure or liquid level related states caused by differences in the liquid nitrogen level at different positions within the main body.

Description

Technical Field

[0001] This utility model relates to the field of cell storage technology, and in particular to a liquid nitrogen tank for cell storage. Background Technology

[0002] In the field of cell storage, liquid nitrogen tanks are essential equipment for the long-term storage of cell samples. By providing an extremely low temperature environment, liquid nitrogen tanks essentially stop cellular metabolic activities, thereby preserving cell viability and function for subsequent research and use.

[0003] Traditional liquid nitrogen tanks for cell storage have certain limitations in their structural design. These tanks typically contain supports for holding cell storage dishes; however, the varying distance between the liquid nitrogen surface and the supports results in uneven temperature distribution across the support. Specifically, the lower part of the support, closer to the liquid nitrogen surface, is cooler, while the upper part, further away, is relatively warmer. This temperature inhomogeneity can negatively impact the preservation of cells in the storage dishes, failing to provide a stable and uniform cryogenic environment.

[0004] Currently, although the problem of uneven temperature distribution is recognized, there is no effective solution yet. Therefore, it is necessary to improve the structure of liquid nitrogen tanks for cell storage to solve the problem of uneven temperature distribution caused by different distances between the liquid nitrogen surface and the support, and to ensure that cells can be better preserved in liquid nitrogen tanks. Utility Model Content

[0005] To address the above shortcomings, this invention provides a liquid nitrogen tank for cell storage, which can solve the problems in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A liquid nitrogen tank for cell storage includes a main body, a cell storage component, and a liquid nitrogen leveling mechanism. The cell storage component is disposed on the top of the main body, and the liquid nitrogen leveling mechanism is connected to the main body. The cell storage assembly includes a sealing cap, a sealing plug, a liquid nitrogen inlet, and a cell storage dish support. The sealing plug is located in the center of the sealing cap, the liquid nitrogen inlet is located on one side of the sealing cap, and the cell storage dish support is located inside the main body of the device. The liquid nitrogen leveling mechanism includes a connecting tube, a left inlet, and a right inlet, with the left and right inlets located at opposite ends of the connecting tube.

[0007] Furthermore, the sealing cover is detachably connected to the top of the device body.

[0008] Furthermore, in the above scheme, the sealing plug is connected to the sealing cover, and the position of the sealing plug corresponds to the opening of the main body of the device.

[0009] Furthermore, in the above scheme, the cell storage dish support is fixedly installed in the middle position inside the main body of the device.

[0010] Furthermore, in the above scheme, the connecting pipe is connected to different locations inside the main body of the device through the left and right pipe openings, respectively.

[0011] Furthermore, in the above scheme, the liquid nitrogen injection port is connected to the internal space of the main body of the device.

[0012] Furthermore, in the above scheme, the connecting pipe has a U-shaped structure.

[0013] Furthermore, the opening ends of the left and right ports on the connecting tube are provided with a surrounding portion, the surrounding portion being annular, and the surrounding portion having an annular groove facing the cell storage dish support, the annular groove being connected to the left and right ports respectively.

[0014] Furthermore, the lower end face of the surrounding part is provided with a sleeve that communicates with the annular groove, and the sleeve is inserted into the communicating pipe.

[0015] Furthermore, in the above scheme, the frame of the annular groove is flared.

[0016] Compared with existing technologies, the beneficial effects of this invention are as follows: By setting up a connecting pipe, a left port, and a right port in the liquid nitrogen leveling mechanism, the connecting pipe principle is used to connect different positions inside the device body to the connecting pipe, thereby balancing the pressure or liquid level-related states caused by differences in the liquid nitrogen level at different positions within the device body; by setting the cell storage dish support inside the device body, a placement position for the cell storage dish is provided. The connecting pipe ensures that the liquid nitrogen level in the liquid nitrogen tank is relatively balanced at different positions, providing a more uniform temperature environment for the cell storage dish and ensuring stable cell preservation conditions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the overall structure of a liquid nitrogen tank for cell storage according to the present invention; Figure 2 This is a cross-sectional structural schematic diagram of a liquid nitrogen tank device for cell storage according to the present invention; Figure 3 This is a schematic diagram of the connecting pipe structure of a liquid nitrogen tank for cell storage according to this utility model.

[0019] In the diagram: 1. Main body of the device; 2. Cell storage component; 21. Sealing cap; 22. Sealing plug; 23. Liquid nitrogen inlet; 24. Cell storage dish support; 3. Liquid nitrogen leveling mechanism; 31. Connecting tube; 32. Left inlet; 33. Right inlet; 34. Surrounding part; 35. Circular groove; 36. Sleeve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] Please see Figures 1 to 3 This utility model provides a liquid nitrogen tank for cell storage, including a device body 1, a cell storage component 2 and a liquid nitrogen leveling mechanism 3. The cell storage component 2 is disposed on the top of the device body 1, and the liquid nitrogen leveling mechanism 3 is connected to the device body 1. The cell storage component 2 includes a sealing cap 21, a sealing plug 22, a liquid nitrogen inlet 23, and a cell storage dish support 24. The sealing plug 22 is located in the center of the sealing cap 21, the liquid nitrogen inlet 23 is located on one side of the sealing cap 21, and the cell storage dish support 24 is located inside the main body 1 of the device. The liquid nitrogen leveling mechanism 3 includes a connecting tube 31, a left tube opening 32, and a right tube opening 33. The left tube opening 32 and the right tube opening 33 are respectively located at both ends of the connecting tube 31, and the connecting tube 31 has a U-shaped structure.

[0024] The sealing cap 21 is detachably connected to the top of the device body 1, the sealing plug 22 is connected to the sealing cap 21, and the position of the sealing plug 22 corresponds to the opening of the device body 1. The cell storage dish support 24 is fixedly installed in the middle position inside the device body 1.

[0025] The connecting pipe 31 is connected to different positions inside the main body 1 of the device through the left pipe port 32 and the right pipe port 33 respectively.

[0026] The liquid nitrogen injection port 23 is connected to the internal space of the main body 1 of the device.

[0027] Please see Figures 1 to 3 In one embodiment of this utility model, the liquid nitrogen tank for cell storage includes a main body 1, which serves as the main supporting structure of the entire device. A cell storage assembly 2 is mounted on top of the main body 1, with a sealing cap 21 detachably threaded to the top of the main body 1, allowing operators to easily open or close the liquid nitrogen tank as needed. A liquid nitrogen inlet 23 is located on one side of the sealing cap 21 and communicates with the internal space of the main body 1, used for adding liquid nitrogen into the tank. A cell storage dish support 24 is fixedly installed inside the main body 1 at the center, providing a place for the cell storage dishes.

[0028] The liquid nitrogen leveling mechanism 3 is a key component of this liquid nitrogen tank. Its connecting pipe 31 has a U-shaped structure, with a left port 32 and a right port 33 at its two ends. The left port 32 and the right port 33 are connected to different height positions inside the main body 1 of the device. The U-shaped design of the connecting pipe 31 allows its overall position to be relatively close to the cell storage dish support 24.

[0029] The liquid nitrogen tank for cell storage comprises a main body 1, which serves as the primary support structure for the entire device. The cell storage assembly 2 is mounted on top of the main body 1, with a sealing cap 21 detachably connected to the top of the main body 1 via a threaded connection. The sealing cap 21 not only provides a conventional sealing function but also serves as a holder for cell storage dishes. Furthermore, a cell storage dish support 24 is mounted on the sealing cap 21. This design facilitates simultaneous handling of the cell storage dishes and their supports when operators are handling cell samples, thus improving operational convenience.

[0030] The liquid nitrogen inlet 23 is located on one side of the sealing cover 21 and is connected to the internal space of the main body 1 of the device. It and the sealing cover 21 can also provide an operating channel for injecting liquid nitrogen into the connecting pipe and for maintenance of the internal parts of the device when necessary.

[0031] The liquid nitrogen leveling mechanism 3 is a key component of this liquid nitrogen tank. Its connecting pipe 31 has a U-shaped structure, with a left port 32 and a right port 33 at its two ends. The left port 32 and the right port 33 are connected to different height positions inside the main body 1 of the device. The U-shaped design of the connecting pipe 31 allows its overall position to be relatively close to the cell storage dish support 24 installed on the sealing cover 21.

[0032] Please see Figures 1 to 3 When using this liquid nitrogen tank for cell storage, liquid nitrogen is injected into the main body 1 through the liquid nitrogen inlet 23 to create a low-temperature environment for cell storage. Since there may be height differences in the liquid nitrogen levels at different locations within the main body 1, the liquid nitrogen leveling mechanism 3 begins to operate. Based on the principle of communicating vessels, the liquid nitrogen level in the connecting pipe 31 will reach equilibrium with the liquid nitrogen levels at different locations within the main body 1 connected by the left and right pipe openings 32 and 33.

[0033] The design of the U-shaped connecting tube 31 has unique advantages. Its shape allows the liquid nitrogen level inside the connecting tube 31 to be relatively high and closer to the cell storage dish support 24. When the liquid nitrogen level inside the connecting tube 31 is balanced with the liquid nitrogen levels at various connection points within the main body 1, the liquid nitrogen level near the cell storage dish support 24 within the main body 1 will rise accordingly, bringing the liquid nitrogen closer to the cell storage dish support 24. This makes the distance between the points around the cell storage dish support 24 and the liquid nitrogen more uniform, further reducing temperature differences and providing a more uniform low-temperature environment for the cell storage dishes placed on the cell storage dish support 24, effectively ensuring the quality of cell preservation.

[0034] Please see Figures 1 to 3 The left and right openings of the connecting tube 31 are provided with a surrounding part 34. The surrounding part 34 is circular. The surrounding part 34 has an annular groove 35 facing the cell storage dish support 24. The annular groove 35 is connected to the left opening 32 and the right opening 33 respectively. The lower end face of the surrounding part 34 is provided with a sleeve 36 that is connected to the annular groove 35. The sleeve 36 is inserted into the connecting tube 31. The frame of the annular groove 35 is funnel-shaped.

[0035] The surrounding section 34 further surrounds the liquid nitrogen within the U-shaped connecting tube 31 around the cell storage dish support 24. With only one U-shaped connecting tube 31, the surrounding groove 35 ensures a uniform ring-shaped distribution of liquid nitrogen. When liquid nitrogen is injected into the main body 1, the surrounding groove 35 and the flared shape of the frame facilitate the entry of liquid nitrogen into the connecting tube 31, further ensuring the liquid level within the connecting tube 31. This guarantees a more uniform low-temperature environment for the cell storage dish support 24, effectively ensuring the quality of cell preservation. The sleeve design allows for easy disassembly and assembly of the surrounding section, facilitating equipment cleaning.

[0036] Please see Figures 1 to 3 When using this liquid nitrogen tank for cell storage, liquid nitrogen can be injected into the main body 1 of the device through the liquid nitrogen injection port 23 to create a low-temperature environment for cell storage. When it is necessary to replenish the connecting tube with liquid nitrogen or to perform internal maintenance on the device, the sealing cap 21 and the liquid nitrogen injection port 23 can be used for related operations.

[0037] Since there may be height differences in the liquid nitrogen levels at different locations within the main body 1 of the device, the liquid nitrogen leveling mechanism 3 begins to operate. Based on the principle of communicating vessels, the liquid nitrogen level in the connecting tube 31 will reach equilibrium with the liquid nitrogen levels at different locations within the main body 1 that are connected by the left port 32 and the right port 33. Through the setting of the surrounding part 34, only one U-shaped connecting tube 31 is needed to cover the cell storage dish support 24 with liquid nitrogen, thereby reducing the manufacturing cost of the equipment. The funnel-shaped annular groove 35 makes it easier for liquid nitrogen to enter the connecting tube 31 when replenishing, thereby further ensuring the liquid level height within the connecting tube 31.

[0038] The design of the U-shaped connecting tube 31 has unique advantages. Its shape allows the liquid nitrogen level inside the connecting tube 31 to be relatively high and closer to the cell storage dish support 24 mounted on the sealing cap 21. When the liquid nitrogen level inside the connecting tube 31 is balanced with the liquid nitrogen levels at various connection points within the main body of the device 1, the liquid nitrogen level near the cell storage dish support 24 within the main body of the device 1 will rise accordingly, bringing the liquid nitrogen closer to the cell storage dish support 24. This makes the distance between the points around the cell storage dish support 24 and the liquid nitrogen more uniform, further reducing temperature differences and providing a more uniform low-temperature environment for the cell storage dishes placed on the cell storage dish support 24, effectively ensuring the quality of cell preservation.

[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A liquid nitrogen container for cell storage, characterized in that, The device includes a main body (1), a cell storage component (2), and a liquid nitrogen leveling mechanism (3). The cell storage component (2) is located on the top of the main body (1), and the liquid nitrogen leveling mechanism (3) is connected to the main body (1). The cell storage assembly (2) includes a sealing cap (21), a sealing plug (22), a liquid nitrogen inlet (23), and a cell storage dish support (24). The sealing plug (22) is located in the center of the sealing cap (21), the liquid nitrogen inlet (23) is located on one side of the sealing cap (21), and the cell storage dish support (24) is located inside the main body (1) of the device. The liquid nitrogen leveling mechanism (3) includes a connecting tube (31), a left tube opening (32), and a right tube opening (33). The left tube opening (32) and the right tube opening (33) are respectively located at both ends of the connecting tube (31).

2. The liquid nitrogen tank for cell storage according to claim 1, characterized in that, The sealing cap (21) is detachably connected to the top of the device body (1).

3. The liquid nitrogen tank for cell storage according to claim 1, characterized in that, The sealing plug (22) is connected to the sealing cover (21), and the position of the sealing plug (22) corresponds to the opening of the device body (1).

4. A liquid nitrogen tank for cell storage according to claim 1, characterized in that, The cell storage dish support (24) is fixedly installed in the middle of the main body (1) of the device.

5. A liquid nitrogen tank for cell storage according to claim 1, characterized in that, The connecting pipe (31) is connected to different positions inside the main body of the device (1) through the left port (32) and the right port (33).

6. A liquid nitrogen tank for cell storage according to claim 1, characterized in that, The liquid nitrogen inlet (23) is connected to the internal space of the main body (1) of the device.

7. A liquid nitrogen tank for cell storage according to any one of claims 1-6, characterized in that, The connecting pipe (31) has a U-shaped structure.

8. A liquid nitrogen tank for cell storage according to claim 7, characterized in that, The left port (32) and right port (33) of the connecting tube (31) are provided with a surrounding part (34). The surrounding part (34) is circular. The surrounding part (34) has a ring groove (35) facing the cell storage dish support (24). The ring groove (35) is connected to the left port (32) and the right port (33) respectively.

9. A liquid nitrogen tank for cell storage according to claim 8, characterized in that, The lower end face of the circumferential part (34) is provided with a sleeve (36) that communicates with the annular groove (35), and the sleeve (36) is inserted into the connecting pipe (31).

10. A liquid nitrogen tank for cell storage according to claim 8, characterized in that, The frame of the annular groove (35) is flared.

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