Low temperature storage device

Abstract

The application provides a low-temperature storage device, which comprises a storage cabin and a refrigerating unit, the storage cabin has a storage space inside, an air supply air duct and an air return air duct are arranged in the storage space, the air supply air duct and the air return air duct are communicated with the storage space, the refrigerating unit is detachably connected with the storage cabin, the refrigerating unit comprises a refrigerating assembly and a refrigerating chamber, the refrigerating assembly is used for refrigerating the refrigerating chamber, the refrigerating chamber is provided with an air outlet and an air inlet, the air supply air duct is detachably connected with the air outlet, and the air return air duct is detachably connected with the air inlet. The low-temperature storage device separates the independent storage cabin and the refrigerating unit, and forms refrigeration circulation of the refrigerating unit and the storage space of the storage cabin through the connection of the air supply air duct and the air return air duct. Meanwhile, the refrigerating unit, the storage cabin and the air ducts thereof are detachably connected, so that the refrigerating unit can be directly replaced when the refrigerating unit fails, rapid maintenance is realized, and the influence of the refrigerating unit failure on the low temperature in the storage space is reduced.

Description

Technical Field

[0001] This application belongs to the field of cryogenic storage, and more specifically, relates to a cryogenic storage device. Background Technology

[0002] Low-temperature storage devices are mainly used for storing biological samples and have wide applications in many fields such as the biomedical industry and the biological sample storage industry.

[0003] The low-temperature storage device is equipped with a refrigeration system to cool the storage space and keep the temperature of the storage space at a low temperature. However, once the refrigeration system fails, it often takes a long time to repair. Utility Model Content

[0004] The purpose of this application is to provide a cryogenic storage device to solve the technical problem that the maintenance of the refrigeration system of the cryogenic storage device in the prior art often takes a long time.

[0005] To achieve the above objectives, the technical solution adopted in this application is: to provide a cryogenic storage device, the cryogenic storage device comprising:

[0006] Storage compartment; The storage compartment has storage space inside, and the storage space is equipped with air supply ducts and return air ducts, both of which are connected to the storage space.

[0007] Refrigeration unit; the refrigeration unit is detachably connected to the storage compartment. The refrigeration unit includes a refrigeration component and a refrigeration chamber. The refrigeration component is used to refrigerate the refrigeration chamber. The refrigeration chamber is equipped with an air outlet and an air inlet. The air supply duct and the air outlet are detachably connected, and the return air duct and the air inlet are detachably connected.

[0008] Optionally, the refrigeration unit is located on one side of the storage compartment, and the bottom of the storage compartment is provided with a first support leg for supporting the storage compartment, and the bottom of the refrigeration unit is provided with a second support leg for supporting the refrigeration unit.

[0009] Optionally, the air supply duct extends to the upper part of the storage space, and the air supply duct has a first opening located at the upper part of the storage space;

[0010] The return air duct extends to the lower part of the storage space and has a second opening located at the lower part of the storage space.

[0011] Optionally, the air supply duct includes a distribution duct, which is arranged horizontally at the top of the storage space. Multiple distribution ports are provided at the bottom of the distribution duct along its extension direction, and the distribution ports form a first opening.

[0012] Optionally, the cryogenic storage device also includes an access control compartment, which is equipped with access components for storing or retrieving stored items from the storage compartment;

[0013] An access passage is provided between the access control compartment and the storage compartment, and the access control compartment and the storage compartment are detachably connected.

[0014] Optionally, the storage compartment includes a first side and a second side, with the first side being the opposite side of the second side, the access control compartment being located on the first side, and the refrigeration unit being located on the second side.

[0015] Optionally, the storage compartment includes a third side, which is the side adjacent to the first side;

[0016] The storage compartment also includes a hatch for opening and closing the storage space, which is located on the third side.

[0017] Optionally, one side of the hatch is hinged to the storage compartment so that the hatch can be opened or closed around the hinge;

[0018] The hatch and the storage compartment are also connected by a detachable locking mechanism, with locking mechanisms provided on both the opposite and adjacent sides of the hinge; and / or, a second roller is provided at the bottom of the hatch.

[0019] Optionally, the storage compartment is equipped with a removable storage rack, which is configured to be passable through the hatch.

[0020] Optionally, a conveyor assembly for transporting stored items is provided within the storage compartment;

[0021] A power compartment is provided on the top of the storage compartment, and a first drive unit is provided inside the power compartment. The first drive unit is used to drive the conveying assembly to move laterally.

[0022] A perforated section is provided between the power compartment and the storage compartment along the lateral movement direction of the conveying assembly, and the conveying assembly is located inside the perforated section;

[0023] The hollow section is provided with a telescopic shield for closing the hollow section. The telescopic shield is set in the direction of telescopic movement along the lateral movement direction of the conveying component, so that the telescopic shield extends and retracts with the lateral movement of the conveying component.

[0024] The beneficial effects of the cryogenic storage device provided in this application are as follows: Compared with the prior art, the cryogenic storage device in this application separates an independent storage compartment and a refrigeration unit. A refrigeration cycle is formed between the refrigeration unit and the storage space of the storage compartment through the connection of the air supply duct and the return air duct. Furthermore, the refrigeration unit, the storage compartment, and their air ducts are all detachably connected, allowing for maintenance of the refrigeration unit outside the storage compartment in case of a refrigeration unit failure, or even direct replacement of the refrigeration unit, enabling rapid repair and reducing the impact of refrigeration unit failure on the low temperature inside the storage space. In addition, the use of air cooling can prevent frost formation in the storage compartment. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is an overall schematic diagram of the cryogenic storage device in the embodiments of this application;

[0027] Figure 2 This is a cross-sectional schematic diagram of the connection between the storage compartment and the refrigeration unit in an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the separation of the access control compartment in an embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the interior of the access control cabin in an embodiment of this application;

[0030] Figure 5 This is a schematic diagram of the storage compartment in an embodiment of this application;

[0031] Figure 6 This is a schematic diagram of the interior of the storage compartment in an embodiment of this application;

[0032] Figure 7 This is a schematic diagram of the telescopic shielding component in an embodiment of this application.

[0033] The following are the labeling elements in the figure:

[0034] Storage compartment 1; storage space 11; air supply duct 12; first opening 121; air distribution duct 122; second opening 122; return air duct 13; second opening 131; first support leg 14; support part 141; first roller 142; door 15; hinge 151; locking part 152; second roller 153; storage rack 16; refrigeration unit 2; refrigeration component 21; refrigeration chamber 22; air outlet 221; air inlet 222; second support leg 15; hinge 151; locking part 152; storage rack 16; conveying component 17; storage and retrieval operation compartment 3; storage and retrieval door 31; output mechanism 32; box picking mechanism 33; pipe picking mechanism 34; scanning mechanism 35; transmission mechanism 36; power compartment 4; first drive component 41; second drive component 42; third drive component 43; hollow part 44; telescopic shield 45. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0036] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0037] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0039] Cryogenic storage devices are crucial in many fields, including scientific research, medicine, and bioengineering. They provide a long-term, stable ultra-low temperature environment for biological samples, vaccines, and special materials, delaying their deterioration and degradation. For example, in the field of biological sample storage in the biomedical industry, cryopreservation can maintain the long-term viability of biological tissues such as blood, stem cells, and immune cells.

[0040] Current cryogenic storage devices typically integrate the refrigeration system within the storage chamber. While this integrated design provides basic refrigeration, it has significant limitations: the refrigeration system is tightly connected to the storage space, meaning that in the event of a malfunction, repairs must be performed inside the chamber. This requires not only temporary transfer or insulation of the stored materials, which can potentially disrupt the cryogenic environment, but also disassembly of the complex internal connections, significantly extending the repair time. During this extended repair period, maintaining the cryogenic state within the chamber is difficult, and the temperature gradually rises, directly threatening the stability of the stored materials. This is especially true for highly temperature-sensitive biological samples and vaccines, which are highly susceptible to loss of activity and deterioration due to prolonged exposure to unsuitable cryogenic environments, leading to irreversible damage.

[0041] To address the aforementioned problems, this application proposes a cryogenic storage device. Please refer to [link / reference needed]. Figure 1 and Figure 2 The cryogenic storage device provided in the embodiments of this application will now be described. The cryogenic storage device includes:

[0042] Storage compartment 1; Storage compartment 1 has a storage space 11 inside, and the storage space 11 is provided with an air supply duct 12 and a return air duct 13, both of which are connected to the storage space 11.

[0043] Refrigeration unit 2; refrigeration unit 2 is detachably connected to storage compartment 1. Refrigeration unit 2 includes refrigeration component 21 and refrigeration chamber 22. Refrigeration component 21 is used to refrigerate refrigeration chamber 22. Refrigeration chamber 22 is provided with air outlet 221 and air inlet 222. Air supply duct 12 and air outlet 221 are detachably connected. Air return duct and air inlet 222 are detachably connected.

[0044] Storage chamber 1 serves as the storage area for the cryogenic storage device. Its internal storage space 11 is the place where biological samples are directly stored. It is used to store items requiring cryopreservation, such as cryopreserved cell samples and sealed vaccine preparations. Storage space 11 is equipped with an air supply duct 12 and a return air duct, both of which are connected to storage space 11. The function of the air supply duct 12 is to deliver cold air to storage space 11, while the return air duct is responsible for guiding the air from storage space 11 back, providing a channel to support the refrigeration cycle.

[0045] The refrigeration unit 2 and the storage compartment 1 are connected in a detachable manner, such as through clips or bolts, to facilitate quick assembly and disassembly, providing convenience for maintenance and replacement. The refrigeration unit 2 includes a refrigeration component 21 and a refrigeration chamber 22. The refrigeration component 21 is the key component for refrigeration, typically consisting of a compressor, condenser, evaporator, and expansion valve, which can refrigerate the refrigeration chamber 22, keeping it at a low temperature. The refrigeration chamber 22 is equipped with an air outlet 221 and an air inlet 222. The air outlet 221 is detachably connected to the air supply duct 12 of the storage compartment 1, and the air inlet 222 is detachably connected to the air return duct of the storage compartment 1, for example, through hose connection or flange sealing. These two interfaces form a connection with the air duct of the storage compartment 1, realizing the delivery of cold air and the return of air.

[0046] After the refrigeration component 21 is activated, it generates low-temperature cold air within the refrigeration chamber 22. Taking a common refrigeration system as an example, the compressor compresses the refrigerant into a high-temperature, high-pressure gas. After being cooled by the condenser, it becomes a medium-temperature, high-pressure liquid. Then, it is throttled and depressurized by a throttling valve to become a low-temperature, low-pressure liquid. Upon entering the evaporator, it absorbs heat from the refrigeration chamber 22 and vaporizes. The evaporator is located within the refrigeration chamber 22, thus cooling the chamber. The low-temperature cold air enters the connected air duct 12 through the air outlet 221 of the refrigeration chamber 22, and is then transported to the storage space 11 of the storage compartment 1, providing a low-temperature environment for the items within the storage space 11. After heat exchange with the items, the air in the storage space 11 experiences a temperature increase. This air then flows back to the air inlet 222 of the refrigeration chamber 22 through the return air duct and re-enters the refrigeration chamber 22. At this time, the refrigeration component 21 refrigerates the air entering the refrigeration chamber 22 again, turning it into low-temperature cold air, which then enters the storage space 11 through the air outlet 221 and the air supply duct 12. This cycle repeats continuously, forming a continuous refrigeration cycle to ensure that the storage space 11 always maintains the required low temperature.

[0047] When refrigeration unit 2 malfunctions, it can be repaired and replaced directly from outside storage compartment 1. Taking direct replacement of refrigeration unit 2 as an example, personnel can disconnect the connection between refrigeration unit 2 and storage compartment 1 and the air duct. After separating the faulty unit, a spare, functioning refrigeration unit 2 can be directly installed using the same detachable structure, and the supply air duct 12 and air outlet 221, and the return air duct and air inlet 222 can be connected. The entire replacement process is simple and quick, requiring no disassembly or significant alteration of the storage compartment 1, minimizing the impact on the sealing of storage compartment 1, and allowing the low-temperature environment inside storage compartment 1 to quickly return to stable cooling. This effectively avoids the situation where the temperature of storage space 11 becomes uncontrolled due to prolonged repair of the faulty unit, reducing the risk of deterioration and failure of stored items such as biological samples and vaccines due to prolonged absence of a suitable low-temperature environment, thus effectively ensuring the quality and safety of stored items and reducing unnecessary losses.

[0048] Please see Figure 1 In some embodiments of this application, the refrigeration unit 2 is disposed on one side of the storage compartment 1, and the bottom of the storage compartment 1 is provided with a first support leg 14 for supporting the storage compartment 1, and the bottom of the refrigeration unit 2 is provided with a second support leg 15 for supporting the refrigeration unit 2.

[0049] In this embodiment, the first support leg 14 and the second support leg 15 provide independent support for the storage compartment 1 and the refrigeration unit 2, respectively. When it is necessary to disassemble the two, there is no need to consider the overall structural balance. The refrigeration unit 2 or the storage compartment 1 can be operated independently. For example, when disassembling the refrigeration unit 2, it is only necessary to disconnect its air duct connection with the storage compartment 1. With its own second support leg 15, it can be moved or transported smoothly, avoiding imbalance or collisions during disassembly caused by relying on the support of the storage compartment 1. Similarly, the storage compartment 1 can also be placed independently and stably with the support leg 14, which is convenient for individual movement.

[0050] During re-docking, the positions and attitudes of each component are easier to control. The first support leg 14 and the second support leg 15 can respectively ensure that the storage compartment 1 and the refrigeration unit 2 are at the preset height and level, providing a stable benchmark for the precise docking of components such as the air duct interface, reducing alignment deviations caused by unstable support, thereby improving the efficiency and accuracy of reassembly, and enabling the two to quickly restore normal connection and cooperation.

[0051] like Figure 1 In the illustrated embodiment, both the first support leg 14 and the second support leg 15 can be supports with a first roller 142 and an adjustable support 141. By adjusting the height of the support 141, the contact between the support 141 or the first roller 142 and the ground can be switched: when the support 141 is in contact with the ground, it can provide stable support for the equipment and effectively prevent it from moving arbitrarily; when the first roller 142 is in contact with the ground, it is easy to move the equipment with the help of the first roller 142. Taking the replacement of the refrigeration unit 2 as an example, during operation, the height of the support 141 of the second support leg 15 can be adjusted first so that the first roller 142 is in contact with the ground. In this way, after disassembling the faulty refrigeration unit 2, it can be easily moved away; then, the new refrigeration unit 2 is moved to the position opposite to the storage compartment 1 by using the first roller 142, and then the height of the support 141 is adjusted again so that the support 141 is in contact with the ground to stably support the refrigeration unit 2. Finally, the docking operation between the refrigeration unit 2 and the storage compartment 1 is completed. Similarly, the first leg 14 of the storage compartment 1 can also be used in this way to flexibly switch between stable placement and convenient movement.

[0052] Please see Figure 2In some embodiments of this application, the air supply duct extends to the upper part of the storage space 11 and has a first opening 121 located in the upper part of the storage space 11; the return air duct extends to the lower part of the storage space 11 and has a second opening 131122 located in the lower part of the storage space 11.

[0053] The air supply duct 12 extends to the upper part of the storage space 11 and has a first opening 121, while the return air duct extends to the lower part of the storage space 11 and has a second opening 131122. This utilizes the physical properties of cold air, which has a higher density and is more likely to sink, to significantly improve the cooling efficiency and temperature uniformity within the storage space 11.

[0054] When the low-temperature cold air generated by the refrigeration unit 2 is delivered to the upper part of the storage space 11 through the air supply duct 12 and released from the first opening 121, it will naturally diffuse downwards, gradually filling the entire storage space 11, making full contact with the items in the storage space 11 and absorbing heat. Finally, it enters the return air duct at the lower part of the storage space 11 through the second opening 131-122 and flows back to the refrigeration unit 2 for recooling. In this way, a complete and efficient airflow circulation can be formed within the storage space 11, avoiding the problem of cold air accumulation or uneven distribution in local areas. This ensures that the temperature in all areas of the storage space 11 remains consistent, ensuring that all biological samples, vaccines, and other items are in a stable low-temperature environment, further guaranteeing the quality of the stored items.

[0055] Please continue reading. Figure 2 In some embodiments of this application, the air supply duct includes an air distribution pipe 122, which is arranged laterally at the upper part of the storage space 11. The bottom of the air distribution pipe 122 is provided with a plurality of air distribution openings along the extension direction of the air distribution pipe 122, and the air distribution openings form a first opening 121.

[0056] The horizontally arranged air distribution duct 122 can cover a wider area of ​​the upper part of the storage space 11. Multiple air distribution outlets distributed along the extension direction of the air distribution duct 122 can simultaneously release low-temperature cold air from different positions in the upper part of the storage space 11. Compared with a single opening, this multi-outlet air distribution configuration allows for a uniform horizontal distribution of cold air in the initial release stage. Combined with the sinking characteristic of cold air, it makes it easier for the cold air to fill all corners of the storage space 11 during the downward diffusion process, avoiding temperature differences caused by local cold air concentration and further improving the temperature uniformity within the storage space 11. At the same time, multiple air distribution outlets can also reduce the cold air output pressure of a single opening, making the cold air release more gradual and reducing the direct impact that strong airflow may cause on the stored items. This is especially suitable for storing items such as biological samples that are sensitive to airflow, providing a milder low-temperature environment for the stored items while ensuring the cooling effect.

[0057] Please see Figure 1In some embodiments of this application, the cryogenic storage device further includes an access control chamber 3, which is provided with access components for storing or retrieving stored items into the storage chamber 1; an access channel is provided between the access control chamber 3 and the storage chamber 1, and the access control chamber 3 and the storage chamber 1 are detachably connected.

[0058] The cryogenic storage unit includes an additional access control compartment 3, equipped with access components for storing or retrieving items from the storage compartment 1. These components can utilize robotic arms, conveyor tracks, or other automated operating structures, depending on specific needs, to achieve precise and efficient transfer of stored items. The access control compartment 3 and the storage compartment 1 are connected via an access channel, providing a pathway for storing and retrieving items. The access control compartment 3 and the storage compartment 1 are detachably connected, allowing for the installation of access control compartments 3 with different functions as needed, and also facilitating the replacement of the access control compartment 3.

[0059] like Figure 4 As shown, the storage and retrieval operation chamber 3 is provided with a storage and retrieval door 31, and the storage and retrieval components inside include an output mechanism 32 for outputting storage boxes, a box picking mechanism 33 for picking up storage boxes, a tube picking mechanism 34 for picking up sample tubes, a scanning mechanism 35 for scanning codes, and a transmission mechanism 36 for taking out and putting in stored items from the storage chamber 1.

[0060] In addition, the storage and retrieval operation chamber 3 can retain only the box picking mechanism 33, or it can be equipped with both the box picking mechanism 33 and the tube picking mechanism 34. Furthermore, based on the aforementioned configuration, guide rails and a transfer box positioning and lifting device can be added to suit scenarios where multiple devices are used for sample storage in conjunction. The so-called multi-device linkage refers to connecting the storage and retrieval operation chambers 3 of multiple cryogenic storage devices via guide rails to form a joint storage system. Some mechanisms can be shared; for example, multiple cryogenic storage devices can share the scanning mechanism 35.

[0061] Please see Figure 1 In some embodiments of this application, the storage compartment 1 includes a first side and a second side, the first side being the opposite side of the second side, the access control compartment 3 being located on the first side, and the refrigeration unit 2 being located on the second side, that is, the access control compartment 3 and the refrigeration unit 2 are located on opposite sides of the storage compartment 1 respectively.

[0062] The storage and retrieval operation compartment 3 is located on the first side. When storing or retrieving items, staff do not need to approach the refrigeration unit 2, avoiding interference from noise, vibration, or low temperatures generated by the refrigeration unit 2 during operation, making the storage and retrieval operations smoother and safer. At the same time, the refrigeration unit 2 is located on the opposite second side, providing it with independent operating space and reducing the impact of collisions or contact that may occur to the refrigeration unit 2 during storage and retrieval operations, which helps ensure the stable operation of the refrigeration unit 2.

[0063] This dual-sided distribution allows for a more rational layout of the access channels, air supply ducts 12, and return air ducts, reducing cross-interference between channels. Stored goods enter and exit storage compartment 1 through the access control compartment 3 and access channels on the first side, while cold air enters storage space 11 through air supply duct 12 via the refrigeration unit 2 on the second side and returns through the return air duct. The clear flow paths of each channel reduce the impact on the low-temperature environment of storage space 11 during storage and retrieval, further ensuring the storage quality of the goods. Furthermore, this layout facilitates equipment maintenance; maintenance of the access control compartment 3 does not affect the refrigeration unit 2 on the second side, and vice versa, improving maintenance efficiency.

[0064] Please see Figure 3 In some embodiments of this application, the storage compartment 1 includes a third side, which is adjacent to the first side; the storage compartment 1 also includes a door 15 for opening and closing the storage space 11, the door 15 being located on the third side.

[0065] Typically, the third side is actually adjacent to both the first and second sides. Installing a hatch 15 on the third side of the storage compartment 1 ensures that the hatch 15 does not conflict with the positions of the access control compartment 3 and the refrigeration unit 2, avoiding congestion of the operating space caused by the concentration of components. Simultaneously, this layout reduces the impact of opening and closing the hatch 15 on the operation of the access control compartment 3 or the heat dissipation of the refrigeration unit 2. For example, when the hatch 15 is open, it will not obstruct the access passage, ensuring the independent and efficient operation of each component.

[0066] When large-scale cleaning, maintenance or emergency operations are required in storage space 11, the third-side hatch 15 provides a more direct and spacious access point, ensuring the ease of opening storage compartment 1.

[0067] Please see Figure 5 In some embodiments of this application, one side of the hatch 15 is hinged to the storage compartment 1 via a hinge 151, so that the hatch 15 can be opened or closed around the hinge 151; the hatch 15 and the storage compartment 1 are also connected by a detachable locking member 152, and locking members 152 are provided on the opposite side and adjacent side of the hinge 151.

[0068] One side of the hatch 15 is hinged to the storage compartment 1 via a hinge 151, providing a stable pivot point for opening and closing the hatch 15. This allows the hatch 15 to rotate smoothly around the hinge 151, making opening and closing easier and more convenient, ensuring that personnel can easily operate the hatch 15 to enter and exit the storage space 11. Simultaneously, the hatch 15 and the storage compartment 1 are connected by a detachable locking element 152, and locking elements 152 are provided on both the opposite and adjacent sides of the hinge 151. The locking elements 152 can typically be common connecting components such as bolts or screws. Figure 5In the embodiment shown, eight bolts are provided on the opposite and adjacent sides of the hinge 151 on the hatch 15 for fastening connection.

[0069] When the hatch 15 is closed, the locking elements 152 securely fasten the hatch 15 to the storage compartment 1, effectively enhancing the seal between the hatch 15 and the storage compartment 1, reducing the leakage of cold air from the storage space 11, and preventing hot air from entering the storage space 11, thus maintaining the stability of the low-temperature environment within the storage space 11. Furthermore, the hinge 151, bearing the weight of the hatch 15 for extended periods, may cause the hatch 15 to gradually sag. The locking elements 152 on the opposite and adjacent sides of the hinge 151 apply upward pulling force and lateral fixing force to the hatch 15 from multiple directions, balancing the load-bearing pressure at the hinge 151, preventing the hatch 15 from shifting and sagging due to gravity, thereby extending the service life of the hinge 151.

[0070] In addition, such as Figure 5 As shown, an independent second roller 153 can also be installed at the bottom of the hatch 15 to support the hatch 15 during opening and further prevent the hatch 15 from falling.

[0071] Please see Figure 6 In some embodiments of this application, the storage compartment 1 is provided with a detachable storage rack 16, and the storage rack 16 is configured to pass through the door 15.

[0072] The storage rack 16 installed inside the storage chamber 1 is detachably connected to the chamber, allowing it to be easily separated. The rack 16 can also pass through the door 15, facilitating its overall movement. In the event of a malfunction in the storage chamber 1 or the refrigeration unit 2, personnel can open the door 15. Since the rack 16 is detachable and can pass through the door, it can be completely removed. The rack 16 containing the samples can then be transferred to another refrigeration unit for continued storage. This entire process eliminates the need for individual sample handling, enabling rapid sample transfer. This rapid transfer method minimizes the time samples are removed from the suitable low-temperature environment, reducing the risk of sample damage due to environmental changes, thus ensuring sample safety and minimizing sample loss due to equipment failure, providing reliable protection for sample storage.

[0073] Please see Figure 6 and Figure 7In some embodiments of this application, a conveying assembly 17 for conveying stored items is provided inside the storage compartment 1; a power compartment 4 is provided on the top of the storage compartment 1, and a first driving member 41 is provided inside the power compartment 4. The first driving member 41 is used to drive the conveying assembly 17 to move laterally; a hollow portion 44 is provided between the power compartment 4 and the storage compartment 1 along the lateral movement direction of the conveying assembly 17, and the conveying assembly 17 is disposed in the hollow portion 44; a telescopic shielding member 45 for closing the hollow portion 44 is provided on the hollow portion 44, and the telescopic shielding member 45 is telescopically positioned along the lateral movement direction of the conveying assembly 17 so that the telescopic shielding member 45 telescopically extends and retracts with the lateral movement of the conveying assembly 17.

[0074] The conveying assembly 17 is disposed within the storage compartment 1, and its main function is to convey stored items, for example, to convey stored items to the storage rack 16, or to remove stored items from the storage rack 16 and convey them out of the storage compartment 1. The power compartment 4 is located on top of the storage compartment 1, providing a relatively independent placement environment for the drive components of the conveying assembly 17. The power compartment 4 and the storage compartment 1 can be manufactured using an integrated foaming process, resulting in better insulation without seams. The conveying assembly 17 typically needs to perform lateral, vertical, and telescopic movements. The lateral and vertical movements work together to allow the conveying assembly 17 to reach any position on the storage rack 16, while the telescopic movement allows stored items to be placed on or removed from the storage rack 16. In this embodiment, the first drive component 41 drives the conveying assembly 17 to move laterally. The first drive component 41 is installed in the power compartment 4, and in such a way... Figure 6 In the illustrated embodiment, the power compartment 4 is further provided with a second drive member 42 for driving the vertical movement of the conveying assembly 17, and a third drive member 43 for driving the telescopic movement of the conveying assembly 17. The second drive member 42 and the third drive member 43 are typically connected to the conveying assembly 17 by means of chain drive or similar methods. The first drive member 41, the second drive member 42, and the third drive member 43 are typically common drive devices such as motors.

[0075] To connect the conveying assembly 17 and the first driving component 41, a perforated section 44 needs to be provided between the power compartment 4 and the storage compartment 1. The perforated section 44 is distributed along the lateral movement direction of the conveying assembly 17, allowing the conveying assembly 17 to move laterally normally. A telescopic shield 45 is installed on the perforated section 44, and its telescopic direction is consistent with the lateral movement direction of the conveying assembly 17. It can be in the form of accordion fabric, telescopic baffle, etc., and can extend and retract as the conveying assembly 17 moves.

[0076] After the first drive unit 41 is activated within the power compartment 4, it drives the conveying assembly 17 to move laterally via the transmission structure, causing the stored items on the conveying assembly 17 to move within the storage compartment 1. Since the conveying assembly 17 passes through the openwork 44, the telescopic shielding member 45, which is linked to it, extends and retracts synchronously during the movement of the conveying assembly 17, thus not obstructing its movement. Figure 7 As shown, telescopic shielding members 45 are typically provided on both sides of the conveying assembly 17. When the conveying assembly 17 moves in a certain direction as indicated by the arrow in the figure, one side of the telescopic shielding member 45 expands and the other side retracts, always maintaining coverage of the hollow portion 44. To further enhance the effect of the telescopic shielding member 45, telescopic shielding members 45 can be provided on both the upper and lower sides of the hollow portion 44.

[0077] By setting the telescopic shield 45, hot air inside the power compartment 4 can be effectively blocked from entering the storage compartment 1 through the perforated part 44, ensuring that the low-temperature environment inside the storage compartment 1 is not affected by the temperature inside the power compartment 4, thus providing stable storage conditions for the stored goods. At the same time, the shielding effect of the telescopic shield 45 can also prevent the low temperature inside the storage compartment 1 from being excessively conducted to the power compartment 4, preventing the first drive component 41 from being affected by the low ambient temperature and its normal operation, thus ensuring the stable operation of the conveying component 17.

[0078] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cryogenic storage device, characterized in that, The cryogenic storage device includes: Storage compartment; the storage compartment has storage space inside, and the storage space is provided with air supply duct and air return duct, both of which are connected to the storage space; A refrigeration unit; the refrigeration unit is detachably connected to the storage compartment, the refrigeration unit includes a refrigeration component and a refrigeration chamber, the refrigeration component is used to refrigerate the refrigeration chamber, the refrigeration chamber is provided with an air outlet and an air inlet, the air supply duct and the air outlet are detachably connected, and the return air duct and the air inlet are detachably connected.

2. The cryogenic storage device as described in claim 1, characterized in that, The refrigeration unit is located on one side of the storage compartment, and the bottom of the storage compartment is provided with a first support leg for supporting the storage compartment, and the bottom of the refrigeration unit is provided with a second support leg for supporting the refrigeration unit.

3. The cryogenic storage device as described in claim 1, characterized in that, The air supply duct extends to the upper part of the storage space, and the air supply duct has a first opening located at the upper part of the storage space; The return air duct extends to the lower part of the storage space, and the return air duct has a second opening located at the lower part of the storage space.

4. The cryogenic storage device as described in claim 3, characterized in that, The air supply duct includes a distribution duct, which is arranged laterally at the upper part of the storage space. The bottom of the distribution duct has a plurality of air outlets along its extension direction, and the air outlets form the first opening.

5. The cryogenic storage device as described in claim 1, characterized in that, The cryogenic storage device also includes an access control compartment, which is equipped with access components for storing or retrieving stored items into or from the storage compartment. An access channel is provided between the access control compartment and the storage compartment, and the access control compartment and the storage compartment are detachably connected.

6. The cryogenic storage device as described in claim 5, characterized in that, The storage compartment includes a first side and a second side, the first side being the opposite side of the second side, the access control compartment being located on the first side, and the refrigeration unit being located on the second side.

7. The cryogenic storage device as described in claim 6, characterized in that, The storage compartment includes a third side, which is adjacent to the first side; The storage compartment also includes a door for opening and closing the storage space, the door being located on the third side.

8. The cryogenic storage device as described in claim 7, characterized in that, One side of the hatch is hinged to the storage compartment, so that the hatch can be opened or closed around the hinge; The hatch and the storage compartment are also connected by a detachable locking device, which is provided on both the opposite and adjacent sides of the hinge; and / or, a second roller is provided at the bottom of the hatch.

9. The cryogenic storage device as described in claim 7 or 8, characterized in that, The storage compartment is equipped with a removable storage rack, which is configured to be passable through the compartment door.

10. The cryogenic storage device as described in any one of claims 1 to 8, characterized in that, The storage compartment contains a conveyor assembly for transporting stored items; The storage compartment is equipped with a power compartment on top, and a first driving component is installed inside the power compartment. The first driving component is used to drive the conveying assembly to move laterally. A perforated section is provided between the power compartment and the storage compartment along the lateral movement direction of the conveying assembly, and the conveying assembly is disposed within the perforated section; The hollowed-out portion is provided with a telescopic shield for closing the hollowed-out portion. The telescopic shield is extended in the direction of the lateral movement of the conveying assembly, so that the telescopic shield extends and retracts with the lateral movement of the conveying assembly.

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