A long-lasting low-temperature refrigerator

Abstract

The utility model discloses a long-lasting low-temperature refrigerator, including a refrigerator and a heat-insulating movable mechanism; the heat-insulating movable mechanism is arranged on the refrigerator, and the heat-insulating movable mechanism can drive the heat-insulating layer to slide and cover and seal the refrigerator opening for heat preservation. The beneficial effects of the utility model are as follows: 1. The heat-insulating layer covers the upper cover of the refrigerator, isolates the internal and external temperatures, reduces the volatilization of liquid nitrogen and energy consumption in the refrigerator, and increases the heat-insulating effect of the refrigerator; 2. The pressure rod is arranged perpendicular to the spreading direction of the heat-insulating layer, and can achieve the flatness of the heat-insulating layer by pressure when laying and rolling up the heat-insulating film, and prevent the heat-insulating film from turning over and folding; 3. The support column and the guide pin are used to limit the range of movement of the fixing member and the pressure rod; 4. The first elastic member and the second elastic member can provide pressure to the fixing member and the pressure rod to ensure that the heat-insulating layer fits flat, and at the same time, the heat-insulating layer will vibrate in the process of pulling open the heat-insulating layer, and can also play a buffering role for the pressure rod and the second elastic member to prevent the pressure rod from breaking or deforming and the heat-insulating film from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of sample storage, in particular to a long-lasting low-temperature refrigerator. Background Art

[0002] In the field of biological sample storage, low-temperature refrigerators are often used to store biological samples such as blood samples, vaccines, bacteria and viruses, so that the samples are kept in liquid nitrogen for short-term active preservation.

[0003] Low-temperature refrigerators usually need to be used in conjunction with an operating chamber for sample storage and access. The temperature inside the operating chamber is usually room temperature. Close contact with the low-temperature refrigerator can easily cause the liquid nitrogen in the refrigerator to volatilize, causing the temperature to rise, making the low-temperature effect of the refrigerator worse.

[0004] Therefore, there is an urgent need for a long-lasting low-temperature refrigerator that can reduce the impact of external factors on the temperature inside the refrigerator, reduce the volatilization of liquid nitrogen in the refrigerator, and maintain a low temperature for a long time and effectively. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the above problems or problems existing in the prior art, the present utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a long-lasting low-temperature refrigerator, which can continuously keep the refrigerator warm and avoid the liquid nitrogen in the refrigerator from contacting the operating cabin during use, thereby ensuring that the liquid nitrogen in the refrigerator evaporates and maintains the low temperature lastingly and effectively.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a long-lasting low-temperature refrigerator, which includes a refrigerator and a heat-insulating movable mechanism; the heat-insulating movable mechanism is arranged on the refrigerator, and the heat-insulating movable mechanism can drive the heat-insulating layer to slide and cover and seal the refrigerator opening for heat preservation.

[0009] As a preferred solution of the utility model of the long-lasting low-temperature refrigerator, it also includes a pressure rod mechanism, which is arranged on the refrigerator and is arranged on a side close to the storage compartment; the pressure rod mechanism can press the insulation layer tightly and flatten it.

[0010] As a preferred solution of the long-lasting low-temperature refrigerator of the utility model, the heat-insulating moving mechanism includes a fixing member, and the fixing member fixes the heat-insulating layer.

[0011] As a preferred solution of the utility model of the long-lasting low-temperature refrigerator, the heat preservation moving mechanism also includes a first shock-absorbing reset member, which is arranged at both ends of the fixing member and can perform shock-absorbing reset on the fixing member.

[0012] As a preferred solution of the long-lasting low-temperature refrigerator of the utility model, the heat preservation moving mechanism also includes a guide rail sliding member, which is arranged on both sides of the inlet and outlet of the refrigerator, and the fixing member and the first shock-absorbing reset member can slide on the guide rail sliding member.

[0013] As a preferred solution of the utility model of a long-lasting low-temperature refrigerator, wherein: the first shock-absorbing and resetting member includes a positioning plate, a first elastic member, and a support column; the positioning plate is arranged on the upper side of the side end of the fixing member, the support column passes through the positioning plate and is connected to the fixing member, the first elastic member is arranged around the support column, and the first elastic member is arranged at the upper end of the positioning plate.

[0014] As a preferred solution of the long-lasting low-temperature refrigerator of the utility model, the guide rail sliding member includes a guide rail and a slider; the guide rail is arranged on both sides of the inlet and outlet of the refrigerator, the slider is slidably connected to the guide rail, and the slider is connected to the positioning plate.

[0015] As a preferred solution of the utility model of a long-lasting low-temperature refrigerator, a first stopper and a second stopper are arranged on the guide rail, the first stopper is arranged on one side of the pressure rod mechanism, and the second stopper is arranged on a side away from the pressure rod mechanism, and the first stopper and the second stopper can limit the moving distance of the slider.

[0016] As a preferred solution of the utility model of the long-lasting low-temperature refrigerator, the heat-insulating moving mechanism also includes a fixing part, a second stopper, and a snap-in part; the snap-in part is connected to the refrigerator, and the snap-in part is arranged on the side of the second stopper, and the snap-in part can be snap-connected with the fixing part.

[0017] As a preferred solution of the long-lasting low-temperature refrigerator of the utility model, the pressure rod mechanism includes a pressure rod member and an elastic fixing member; elastic fixing members are arranged at both ends of the pressure rod member, and the elastic fixing members can elastically support the pressure rod member.

[0018] As a preferred solution of the utility model of a long-lasting low-temperature refrigerator, wherein: the elastic fixing part includes a pressure rod connecting block, a pin shaft, a second elastic part, and a fixed support plate; the pressure rod connecting block is arranged on the upper side of both ends of the pressure rod connecting block, the upper and lower ends of the pin shaft are respectively connected to the fixed support plate and the pressure rod connecting block, the lower end of the fixed support plate is connected to the refrigerator, the second elastic part is arranged around the pin shaft, and the second elastic part is arranged between the pressure rod connecting block and the fixed support plate.

[0019] As a preferred solution of the long-lasting low-temperature refrigerator of the utility model, a handle is arranged on the heat-insulating moving mechanism.

[0020] As a preferred solution of the long-lasting low-temperature refrigerator of the utility model, a basket rack is arranged in the refrigerator, and the basket rack can store samples.

[0021] As a preferred solution of the long-lasting low-temperature refrigerator of the utility model, a sample tube plate rack and a sample tube loosening rack can be set at the upper end of the basket rack, sample tubes can be placed on the sample tube plate rack, and the sample tube loosening rack can loosen the frozen sample tubes.

[0022] The beneficial effects of the utility model are as follows: 1. The thermal insulation layer covers the upper cover of the refrigerator to isolate the internal and external temperatures, reduce the volatilization of liquid nitrogen and energy consumption in the refrigerator, and increase the thermal insulation effect of the refrigerator; 2. The pressure rod is arranged perpendicular to the spreading direction of the thermal insulation layer, and can achieve the flatness of the thermal insulation layer through pressure when laying and rolling up the thermal insulation film, and prevent the thermal insulation film from flipping and folding; 3. The support column and the guide pin are used to limit the range of movement of the fixing part and the pressure rod, and can prevent the two from flipping; 4. The first elastic part and the second elastic part can provide pressure to the fixing part and the pressure rod to ensure that the thermal insulation layer fits flat. At the same time, in the process of pulling open the thermal insulation layer, the thermal insulation layer will vibrate and exert force on the pressure rod. The first elastic part and the second elastic part can also play a buffering role to prevent the pressure rod from breaking or deforming and the thermal insulation film from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0024] Figure 1 This is an overall schematic diagram of a long-lasting low-temperature refrigerator.

[0025] Figure 2 A top view of a long-lasting low-temperature refrigerator.

[0026] Figure 3 for Figure 1 Enlarged view of F2 in the medium-long-lasting low-temperature refrigerator.

[0027] Figure 4 for Figure 1 Enlarged view of F1 of the medium-long-lasting low-temperature refrigerator.

[0028] Figure 5 for Figure 2 Enlarged view of F3 of the medium-long-lasting low-temperature refrigerator.

[0029] Figure 6 for Figure 2 Cross-sectional view of the medium-long-term low-temperature refrigerator at AA.

[0030] Figure 7 Schematic diagram of the basket rack of the long-lasting low-temperature refrigerator.

[0031] Figure numerals: refrigerator, 1; heat preservation moving mechanism, 2; heat preservation layer, 3; pressure rod mechanism, 4; fixing member, 21; first shock-absorbing reset member, 22; positioning plate, 221; first elastic member, 222; support column, 223; guide rail sliding member, 23; guide rail, 231; slider, 232; first stop member, 24; second stop member, 26; clamping member, 25; pressure rod member, 41; elastic fixing member, 42; pressure rod connecting block, 421; pin shaft, 422; second elastic member, 423; fixed support plate, 424; handle, 27; basket rack, 11; sample tube plate rack, 12; sample tube loose rack, 13; DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example 1

[0036] Reference Figures 1 to 3 , which is the first embodiment of the utility model, and this embodiment provides a long-lasting low-temperature refrigerator, which includes a refrigerator 1 and a heat-insulating movable mechanism 2; the heat-insulating movable mechanism 2 is arranged on the refrigerator 1, and the heat-insulating movable mechanism 2 can drive the heat-insulating layer 3 to slide and cover and seal the opening of the refrigerator 1 for heat preservation.

[0037] Preferably, the refrigerator 1 needs to cooperate with the operating chamber when in use. The temperature in the operating chamber is normal temperature. There is liquid nitrogen inside the refrigerator 1. When storing and accessing samples, the heat-insulating moving mechanism 2 drives the heat-insulating layer 3 to move, so that the refrigerator 1 can be opened for storage and access. After the storage and access is completed, the heat-insulating moving mechanism 2 is used to drive the heat-insulating layer 3 to move, so as to cover and seal the opening of the refrigerator 1 to ensure that the liquid nitrogen inside the refrigerator 1 will not enter the operating chamber, and can effectively and permanently keep cold.

[0038] In summary, the utility model can drive the insulation layer 3 to cover the inlet and outlet of the refrigerator 1 through the insulation moving mechanism 2, so as to ensure that the refrigerator 1 and the operating chamber are isolated and the liquid nitrogen is prevented from vaporizing. When the sample needs to be stored, the insulation moving mechanism 2 is used to drive the insulation layer 3 to shrink, so as to open the inlet and outlet of the refrigerator 1. The device can reduce the volatilization of liquid nitrogen and effectively maintain the low temperature in the refrigerator 1.

[0039] Example 2

[0040] Reference Figures 1 to 7 , which is the second embodiment of the utility model, is based on embodiment 1, and the long-lasting low-temperature refrigerator includes a refrigerator 1 and a heat-insulating movable mechanism 2; the heat-insulating movable mechanism 2 is provided on the refrigerator 1, and the heat-insulating movable mechanism 2 can drive the heat-insulating layer 3 to slide and cover and seal the opening of the refrigerator 1 for heat preservation.

[0041] Preferably, the refrigerator 1 needs to cooperate with the operating chamber when in use. The temperature in the operating chamber is normal temperature. There is liquid nitrogen inside the refrigerator 1. When storing and accessing samples, the heat-insulating moving mechanism 2 drives the heat-insulating layer 3 to move, so that the refrigerator 1 can be opened for storage and access. After the storage and access is completed, the heat-insulating moving mechanism 2 is used to drive the heat-insulating layer 3 to move, so as to cover and seal the opening of the refrigerator 1 to ensure that the liquid nitrogen inside the refrigerator 1 will not enter the operating chamber, and can effectively and permanently keep cold.

[0042] Furthermore, it also includes a pressure rod mechanism 4, which is arranged on the refrigerator 1 and is arranged on a side close to the storage compartment; the pressure rod mechanism 4 can press the insulation layer 3 to make it flat.

[0043] Preferably, the pressure rod mechanism 4 can press and flatten the thermal insulation layer 3 to ensure that the thermal insulation layer 3 fits the inlet and outlet of the refrigerator 1; the thermal insulation layer 3 can be made of a thermal insulation film.

[0044] Furthermore, the heat-insulating moving mechanism 2 includes a fixing member 21 , and the fixing member 21 fixes the heat-insulating layer 3 .

[0045] Preferably, by providing the fixing member 21, the thermal insulation layer 3 and the fixing member 21 can be fixed together, that is, when the fixing member 21 moves, the thermal insulation layer 3 can be driven to move.

[0046] Furthermore, the heat-insulating moving mechanism 2 further includes a first shock-absorbing and resetting member 22 . The first shock-absorbing and resetting member 22 is arranged at both ends of the fixing member 21 . The first shock-absorbing and resetting member 22 can perform shock-absorbing and resetting on the fixing member 21 .

[0047] Preferably, the first shock-absorbing reset member 22 can provide pressure to the fixing member 21 , thereby ensuring that the thermal insulation layer 3 fits closely to the opening of the refrigerator 1 .

[0048] Furthermore, the heat-insulating moving mechanism 2 also includes a guide rail sliding member 23 , which is arranged on both sides of the inlet and outlet of the refrigerator 1 , and the fixing member 21 and the first shock-absorbing reset member 22 can slide on the guide rail sliding member 23 .

[0049] Preferably, a first shock-absorbing and resetting member 22 is provided on the guide rail sliding member 23 , and the first shock-absorbing and resetting member 22 supports the fixing member 21 .

[0050] Furthermore, the guide rail sliding member 23 includes a guide rail 231 and a slider 232 ; the guide rail 231 is arranged on both sides of the inlet and outlet of the refrigerator 1 , the slider 232 is slidably connected to the guide rail 231 , and the slider 232 is connected to the positioning plate 221 .

[0051] Furthermore, the first shock-absorbing reset member 22 includes a positioning plate 221, a first elastic member 222, and a support column 223; the positioning plate 221 is arranged on the upper side of the side end of the fixing member 21, the support column 223 passes through the positioning plate 221 and is connected to the fixing member 21, the first elastic member 222 is arranged around the support column 223, and the first elastic member 222 is arranged at the upper end of the positioning plate 221.

[0052] Preferably, the upper end of the slider 232 is connected to the positioning plate 221, and the positioning plate 221 extends out of one side of the slider 232, and is connected to the fixing member 21 through the positioning plate 221 by means of a support column 223, and the fixing member 21 and the insulation layer 3 can have a certain vertical elastic space by means of the first elastic member 222, thereby ensuring that the insulation layer 3 can fit the opening of the refrigerator 1.

[0053] Furthermore, a first stopper 24 and a second stopper 26 are provided on the guide rail 231 . The first stopper 24 is provided on one side of the pressure rod mechanism 4 , and the second stopper 26 is provided on a side away from the pressure rod mechanism 4 . The first stopper 24 and the second stopper 26 can limit the moving distance of the slider 232 .

[0054] Preferably, by providing the first stopper 24 and the second stopper 26, it is possible to avoid excessive stretching and excessive winding of the thermal insulation layer 3, thereby enabling the thermal insulation moving mechanism 2 and the pressure rod mechanism 4 to work smoothly.

[0055] Furthermore, the heat preservation moving mechanism 2 also includes a fixing member 21, a second stop member 26, and a clamping member 25; the clamping member 25 is connected to the refrigerator 1, and the clamping member 25 is arranged on the side of the second stop member 26, and the clamping member 25 can be clamped with the fixing member 21.

[0056] Preferably, when the fixing member 21 drives the insulation layer 3 to move to the second stop member 26, it is only necessary to press the fixing member 21 slightly, and the clamping member 25 will clamp the fixing member 21, so that the insulation layer 3 remains in a covered state, thereby completely covering the opening of the refrigerator 1, avoiding contact between the operating compartment and the refrigerator 1, and avoiding volatilization of liquid nitrogen, thereby extending the storage temperature in the refrigerator 1; when it is necessary to store the insulation layer 3, it is only necessary to pull the fixing member 21 forward slightly, at which time the fixing member 21 will be disengaged from the clamping member 25, and under the action of the first elastic member 222, the fixing member 21 can be driven upward to fit with the positioning plate 221, thereby leaving the clamping range of the clamping member 25 and being able to be rolled up.

[0057] Furthermore, the pressure rod mechanism 4 includes a pressure rod member 41 and an elastic fixing member 42 ; the elastic fixing members 42 are arranged at both ends of the pressure rod member 41 , and the elastic fixing members 42 can elastically support the pressure rod member 41 .

[0058] Preferably, the elastic fixing member 42 can drive the pressure rod member 41 to apply downward pressure to the insulation layer 3, thereby ensuring that the insulation layer 3 fits the port on one side of the refrigerator 1, and the clamping member 25 can make the insulation layer 3 fit the port on the other side of the refrigerator 1, thereby ensuring that the insulation layer 3 covers and fits the opening of the refrigerator 1.

[0059] Preferably, when the fixing member 21 pulls the thermal insulation layer 3 , the thermal insulation layer 3 will vibrate, and the elastic fixing member 42 can buffer the pressure rod 41 to prevent the pressure rod 41 from being deformed or broken, or the thermal insulation layer 3 from being damaged.

[0060] Furthermore, the elastic fixing member 42 includes a pressure rod connecting block 421, a pin shaft 422, a second elastic member 423, and a fixed support plate 424; the pressure rod connecting block 421 is arranged on the upper side of both ends of the pressure rod connecting block 421, the upper end and the lower end of the pin shaft 422 are respectively connected to the fixed support plate 424 and the pressure rod connecting block 421, the lower end of the fixed support plate 424 is connected to the refrigerator 1, the second elastic member 423 is arranged around the pin shaft 422, and the second elastic member 423 is arranged between the pressure rod connecting block 421 and the fixed support plate 424.

[0061] Preferably, by disposing the second elastic member 423, the pressure rod member 41 can have a certain upward and downward movable space, which can not only apply pressure to the pressure rod member 41 to compact and flatten the thermal insulation layer 3, but also play a buffering role.

[0062] Furthermore, a handle 27 is provided on the heat-insulating moving mechanism 2 .

[0063] Preferably, by providing a handle 27 on the fixing member 21, it is convenient for an external gripper to move the fixing member 21 through the handle 27, thereby unfolding and storing the thermal insulation layer.

[0064] Furthermore, a basket rack 11 is provided in the refrigerator 1, and the basket rack 11 can store samples.

[0065] Furthermore, a sample tube plate rack 12 and a sample tube loosening rack 13 may be provided at the upper end of the basket rack 11 , sample tubes may be placed on the sample tube plate rack 12 , and the sample tube loosening rack 13 may loosen frozen sample tubes.

[0066] In summary, the utility model can drive the pressure rod 41 to apply pressure downward to the insulation layer 3 through the elastic fixing part 42, so as to ensure that the insulation layer 3 is fitted to one side of the refrigerator 1 opening, and the elastic fixing part 42 can buffer the vibrating pressure rod 41 and the insulation layer 3, to avoid deformation, breakage of the pressure rod 41 or damage to the insulation layer 3, and the first shock-absorbing reset part 22 can dampen the fixing part 21 and the insulation layer 3, and when the fixing part 21 reaches the second stopper 26, the fixing part 21 can be engaged with the clamping part 25 by slightly pressing the fixing part 21 downward, so that the fixing part 21 drives the insulation layer 3 to fit the other side of the refrigerator 1 opening, thereby ensuring that the insulation layer 3 is fitted to the entire The opening of the refrigerator 1 is sealed and covered; when it is necessary to store samples, the external gripper is used to drive the fixing member 21 to be slightly pulled forward through the handle 27, and the fixing member 21 will be separated from the clamping member 25, and under the action of the first elastic member 222, the fixing member 21 can be driven upward to fit with the positioning plate 221, thereby leaving the clamping range of the clamping member 25 and storing it. The insulation layer 3 covers the opening of the refrigerator 1, which ensures that the liquid nitrogen in the refrigerator 1 will not volatilize, reduces the influence of external factors on the temperature in the refrigerator 1, and can effectively ensure for a long time that the samples on the basket rack 11 and the sample tube plate rack 12 can be stored at low temperature, so that the samples are always in liquid nitrogen for short-term active preservation.

[0067] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0068] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0069] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, without undue experimentation, the development effort will be a routine task of design, fabrication, and production.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A long-lasting low-temperature refrigerator, characterized in that: The invention comprises a refrigerator and a heat preservation moving mechanism; the heat preservation moving mechanism is arranged on the refrigerator, and the heat preservation moving mechanism can drive the heat preservation layer to slide and cover and seal the refrigerator opening to keep warm; It also includes a pressure rod mechanism, which is arranged on the refrigerator and on a side close to the storage compartment; the pressure rod mechanism can press the insulation layer tightly and flatten it.

2. The long-lasting low-temperature refrigerator according to claim 1, characterized in that: The heat-insulating moving mechanism comprises a fixing member, and the fixing member fixes the heat-insulating layer.

3. The long-lasting low-temperature refrigerator according to claim 2, characterized in that: The heat-insulating moving mechanism further comprises a first shock-absorbing and resetting component, which is arranged at both ends of the fixing component and can perform shock-absorbing and resetting on the fixing component.

4. The long-lasting low-temperature refrigerator according to claim 3, characterized in that: The heat preservation moving mechanism also includes a guide rail sliding member, which is arranged on both sides of the inlet and outlet of the refrigerator, and the fixing member and the first shock-absorbing reset member can slide on the guide rail sliding member.

5. The long-lasting low-temperature refrigerator according to claim 4, characterized in that: The first shock-absorbing reset member includes a positioning plate, a first elastic member, and a support column; the positioning plate is arranged on the upper side of the side end of the fixing member, the support column passes through the positioning plate and is connected to the fixing member, the first elastic member is arranged around the support column, and the first elastic member is arranged at the upper end of the positioning plate.

6. The long-lasting low-temperature refrigerator according to claim 5, characterized in that: The guide rail sliding member includes a guide rail and a slider; the guide rail is arranged on both sides of the inlet and outlet of the refrigerator, the slider is slidably connected to the guide rail, and the slider is connected to the positioning plate.

7. The long-lasting low-temperature refrigerator according to claim 6, characterized in that: The guide rail is provided with a first stopper and a second stopper, wherein the first stopper is provided on one side of the pressure rod mechanism, and the second stopper is provided on a side away from the pressure rod mechanism, and the first stopper and the second stopper can limit the moving distance of the slider.

8. The long-lasting low-temperature refrigerator according to any one of claims 1 to 6, characterized in that: The heat preservation moving mechanism also includes a fixing member, a second stop member, and a clamping member; the clamping member is connected to the refrigerator, and the clamping member is arranged on the side of the second stop member, and the clamping member can be clamped with the fixing member.

9. The long-lasting low-temperature refrigerator according to claim 1, characterized in that: The pressure rod mechanism comprises a pressure rod member and an elastic fixing member; elastic fixing members are arranged at both ends of the pressure rod member, and the elastic fixing members can elastically support the pressure rod member.

10. The long-lasting low-temperature refrigerator according to claim 9, characterized in that: The elastic fixing member includes a pressure rod connecting block, a pin shaft, a second elastic member, and a fixed support plate; the pressure rod connecting block is arranged on the upper side of both ends of the pressure rod connecting block, the upper end and the lower end of the pin shaft are respectively connected to the fixed support plate and the pressure rod connecting block, the lower end of the fixed support plate is connected to the refrigerator, the second elastic member is arranged around the pin shaft, and the second elastic member is arranged between the pressure rod connecting block and the fixed support plate.

11. The long-lasting low-temperature refrigerator according to any one of claims 1 to 6, characterized in that: A handle is arranged on the heat-insulating moving mechanism.

12. The long-term low-temperature refrigerator according to claim 1, characterized in that: A basket rack is arranged in the refrigerator, and the basket rack can store samples.

13. The long-term low-temperature refrigerator according to claim 12, characterized in that: A sample tube plate rack and a sample tube loosening rack may be provided at the upper end of the basket rack, sample tubes may be placed on the sample tube plate rack, and the sample tube loosening rack may loosen frozen sample tubes.

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