Automatic adjustable low-temperature storage equipment

Abstract

The utility model discloses automatic adjustable low-temperature storage equipment which comprises a sample storage cabin, a rotary storage mechanism and a refrigeration cycle mechanism, a rotatable rotating storage mechanism is arranged in the sample storage cabin, a refrigeration circulating mechanism is arranged on the sample storage cabin, the refrigeration circulating mechanism can perform circulating refrigeration on the sample storage cabin, and the rotating storage mechanism can store samples. The liquid nitrogen recycling device has the beneficial effects that vaporized nitrogen can be converted into liquid nitrogen through the refrigeration circulating mechanism, so that the liquid nitrogen can be recycled, and the consumption of the liquid nitrogen is reduced; moreover, the device can be hydraulically and electrically used, the temperature of the sample storage cabin can be automatically adjusted, and the device is convenient to disassemble and replace, energy-saving, environment-friendly and easy to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of sample storage, in particular to an automatically adjustable low-temperature storage device. Background Art

[0002] In the field of biological sample storage, cryogenic storage and retrieval equipment is used to store biological samples such as blood samples, vaccines, bacteria and virus strains at low temperatures, so that the samples are kept in a low temperature state and preserved active.

[0003] The publication number is CN202110990457.1, and the application date is 2021.08.26. The cage-type ultra-low temperature biological sample automated storage and retrieval system uses a rotating drum type sample storage method, but the process of storing and retrieving samples is to set a robotic arm at the central axis position of the storage area to perform tube picking operations. However, since the storage area is an ultra-low temperature environment, the electrical components of the robotic arm are in an ultra-low temperature environment for a long time, which is easy to cause damage and easily affect the storage and retrieval of samples; and the liquid nitrogen currently used is relatively expensive and cannot be recycled, and cannot be cooled in the event of a power outage; for this reason, the utility model author has designed an automatic and adjustable low-temperature storage device. Utility Model Content

[0004] 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.

[0005] In view of the above problems or problems existing in the prior art, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide an automatically adjustable low-temperature storage device, which can avoid the robot arm being in a low-temperature environment for a long time by setting the operating area outside the storage cabin and setting the shoveling equipment inside the operating area. By adopting the Stirling refrigeration mechanism, liquid nitrogen can be circulated and liquefied, thereby avoiding the waste of liquid nitrogen and greatly reducing the cost of using liquid nitrogen.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: an automatically adjustable low-temperature storage device, which includes a sample storage cabin, a rotating storage mechanism, and a refrigeration cycle mechanism; a rotatable rotating storage mechanism is arranged in the sample storage cabin, and a refrigeration cycle mechanism is arranged on the sample storage cabin, the refrigeration cycle mechanism can circulate refrigeration on the sample storage cabin, and the rotating storage mechanism can store samples.

[0008] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, the refrigeration cycle mechanism includes a cooling cabin and a refrigerator; the cooling cabin is arranged inside the sample storage cabin and on the inner side of the rotating storage mechanism, the refrigerator is arranged above the sample storage cabin, and the upper end of the cooling cabin is connected to the refrigerator. The refrigerator can receive vaporized nitrogen in the cooling cabin, liquefy the nitrogen and return it to the cooling cabin.

[0009] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, the cooling chamber is a liquid nitrogen tank, which is fixedly arranged in the sample storage chamber, and the liquid nitrogen tank is equipped with a liquid adding system.

[0010] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, the refrigerator includes a refrigeration module, a first pipe, and a second pipe; the upper ends of the first pipe and the second pipe are connected to the refrigeration module, the lower end of the first pipe is arranged at the upper position of the cooling cabin, and the lower end of the second pipe is arranged at the lower position of the cooling cabin.

[0011] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, a control mechanism is also arranged above the sample storage compartment, and the control mechanism can cool the cooling compartment.

[0012] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, a pressure relief component is also provided on the cooling cabin, and the pressure relief component can relieve pressure and exhaust air in the cooling cabin.

[0013] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, the rotating storage mechanism can drive the cooling cabin to rotate, the protruding end of the refrigerator is arranged inside the cooling cabin, the cooling cabin is provided with cooling liquid, the cooling cabin is the central rotating shaft, and the upper end is connected to the refrigeration cycle mechanism.

[0014] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, the rotating storage mechanism can drive the cooling chamber to rotate, the cooling chamber is an integrated structure of the central rotating shaft, and liquid nitrogen is built in the cooling chamber.

[0015] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, wherein: the rotating storage mechanism includes a driving member and a rotating storage assembly; a driving member is provided on the sample storage cabin, and the rotating storage assembly is arranged inside the sample storage cabin, the driving member can drive the rotating storage assembly to rotate, and the rotating storage assembly can store the basket.

[0016] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, the rotating storage component includes a vertical storage frame, multiple groups of vertical storage frames are circumferentially arranged to form a storage disk, a gear disk is arranged on the upper end of the storage disk, and the driving member can drive the gear disk to rotate.

[0017] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, a driving member is provided at the upper end of the sample storage cabin, a gear plate is provided at the upper end of the cooling cabin, and the gear plate is provided on one side of the driving member, the driving member can drive the gear plate and the cooling cabin to rotate, a rotating storage assembly is provided inside the sample storage cabin, and the cooling cabin can drive the rotating storage assembly to rotate.

[0018] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, the rotating storage component includes a vertical storage frame, and multiple groups of vertical storage frames are arranged in a circle to form a storage disk. A turntable is arranged on the upper end of the storage disk, and the turntable is connected to the cooling cabin. The rotation of the cooling cabin can drive the turntable and the storage disk to rotate.

[0019] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, a vertical channel mechanism is provided on the sample storage compartment, and the samples of the rotating storage mechanism can be stored and accessed through the vertical channel mechanism.

[0020] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, the vertical channel mechanism includes a vertical channel, a channel door driver, a transmission member, and a channel door. A vertical channel is opened on the sample storage cabin, and a channel door is arranged in the vertical channel. The channel door is connected to the channel door driver at the upper end through the transmission member, and the channel door driver drives the channel door through the transmission member to open and close the vertical channel.

[0021] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, it also includes a control box, which is arranged on the side of the sample storage cabin and can control and adjust the temperature inside the sample storage cabin.

[0022] As a preferred solution of the automatic adjustable low-temperature storage device of the utility model, a power distribution system, a condenser, and a control component are arranged in the control box; the power distribution system can distribute power to the equipment, and the condenser and the control component can control the temperature of the sample storage compartment.

[0023] The beneficial effects of the utility model are as follows: the utility model can convert vaporized nitrogen into liquid nitrogen through a refrigeration cycle mechanism, so as to achieve the recycling of liquid nitrogen, thereby reducing the consumption of liquid nitrogen; and the device can be liquid-electric dual-purpose, and can realize automatic temperature adjustment of the sample storage cabin. The device is easy to disassemble and replace, and is energy-saving, environmentally friendly, and easy to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces 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:

[0025] Figure 1 This is an overall schematic diagram of Example 1 of the automatically adjustable low-temperature storage device.

[0026] Figure 2 This is a diagram of the internal structure of Example 1 of the automatically adjustable low-temperature storage device.

[0027] Figure 3 It is an internal cross-sectional view of Example 1 of the automatically adjustable low-temperature storage device.

[0028] Figure 4 This is a schematic diagram of the rotating storage mechanism of Example 1 of the automatically adjustable low-temperature storage device.

[0029] Figure 5 This is a partial enlarged view of the refrigerator in Example 1 of the automatically adjustable low-temperature storage device.

[0030] Figure 6 It is a half-section schematic diagram of the whole of Example 1 of the automatic adjustable low-temperature storage device.

[0031] Figure 7 Schematic diagram of the vertical channel mechanism of the automatic adjustable low-temperature storage device.

[0032] Figure 8 This is a schematic diagram of Example 2 of an automatically adjustable low-temperature storage device.

[0033] Fig. 9 This is a schematic diagram of Example 3 of an automatically adjustable low-temperature storage device.

[0034] Fig.10 It is a half-section schematic diagram of the whole of Example 3 of the automatic adjustable low-temperature storage device.

[0035] Figure numerals: sample storage compartment, 1; rotating storage mechanism, 2; refrigeration cycle mechanism, 3; cooling compartment, 31; refrigerator, 32; refrigeration module, 321; first pipeline, 322; second pipeline, 323; control mechanism, 4; pressure relief assembly, 5; drive member, 21; rotating storage assembly, 22; vertical storage frame, 221; storage disk, 222; gear disk, 223; turntable, 225; vertical channel mechanism, 6; channel door drive member, 61; transmission member, 62; channel door, 63; control box, 7; power distribution system, 71; condenser, 72; control member, 73; DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, 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.

[0037] 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.

[0038] 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 does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0039] Example 1

[0040] Reference Figures 1 to 7 , which is the first embodiment of the utility model, and this embodiment provides an automatically adjustable low-temperature storage device, which includes a sample storage cabin 1, a rotating storage mechanism 2, and a refrigeration cycle mechanism 3. The rotating storage mechanism 2 is arranged in the sample storage cabin 1, and the rotating storage mechanism 2 can be used to rotate in the sample storage cabin 1 and store a basket with samples stored on it. The sample storage cabin 1 can be cooled by the refrigeration cycle mechanism 3.

[0041] Specifically, there are a sample storage cabin 1, a rotating storage mechanism 2, and a refrigeration cycle mechanism 3; a rotatable rotating storage mechanism 2 is provided in the sample storage cabin 1, and a refrigeration cycle mechanism 3 is provided on the sample storage cabin 1. The refrigeration cycle mechanism 3 can circulate and cool the sample storage cabin 1, and the rotating storage mechanism 2 can store samples.

[0042] Preferably, the refrigeration cycle mechanism 3 is Stirling refrigeration.

[0043] Preferably, the refrigeration cycle mechanism 3 can circulate refrigeration on the sample storage compartment 1. Even in the case of a power outage, the sample storage compartment 1 can be cooled, thereby avoiding damage to the sample due to power outage.

[0044] Furthermore, the refrigeration cycle mechanism 3 includes a cooling chamber 31 and a refrigerator 32; the cooling chamber 31 is arranged inside the sample storage chamber 1 and on the inner side of the rotating storage mechanism 2, the refrigerator 32 is arranged above the sample storage chamber 1, and the upper end of the cooling chamber 31 is connected to the refrigerator 32. The refrigerator 32 can receive the vaporized nitrogen in the cooling chamber 31, and liquefy the nitrogen and return it to the cooling chamber 31.

[0045] Furthermore, the cooling chamber 31 is a liquid nitrogen tank, and is fixedly disposed in the sample storage chamber 1 , and the liquid nitrogen tank is equipped with a liquid adding system.

[0046] Preferably, the initial liquid addition can be performed into the cooling chamber 31 through the liquid addition system.

[0047] Preferably, a certain amount of liquid nitrogen is provided in the liquid nitrogen tank, and no liquid needs to be added midway.

[0048] Preferably, the cooling chamber 31 is disposed in the middle of the rotating storage mechanism 2 , so as to facilitate low-temperature refrigeration of the sample boxes and sample tubes on the rotating storage mechanism 2 .

[0049] Preferably, the liquid nitrogen in the cooling chamber 31 will naturally vaporize, and the vaporized nitrogen will enter the upper end. The refrigerator 32 will liquefy the vaporized nitrogen and flow it into the bottom of the cooling chamber 31 again, thereby performing circulating refrigeration even in the event of a power outage.

[0050] Furthermore, the refrigerator 32 includes a refrigeration module 321, a first pipe 322, and a second pipe 323; the upper ends of the first pipe 322 and the second pipe 323 are connected to the refrigeration module 321, the lower end of the first pipe 322 is arranged at the upper position of the cooling chamber 31, and the lower end of the second pipe 323 is arranged at the lower position of the cooling chamber 31.

[0051] Preferably, nitrogen can be sucked into the refrigeration module 321 through the first pipe 322 for cooling and liquefaction, and the liquefied liquid nitrogen can reach the bottom of the cooling chamber 31 through the second pipe 323 and be vaporized again from bottom to top, and the side rotating storage mechanism 2 can be cryogenically frozen, so as to circulate and cool the vaporized nitrogen, thereby performing circulatory refrigeration through liquid nitrogen and nitrogen.

[0052] Preferably, liquid nitrogen can achieve zero loss and can realize automatic temperature adjustment technology from +5°C to -200°C.

[0053] Preferably, in this embodiment, no refrigerant is required, which can effectively protect the environment, and the device saves 50% energy compared to existing refrigerators.

[0054] Furthermore, a control mechanism 4 is provided above the sample storage chamber 1 , and the control mechanism 4 can cool the cooling chamber 31 .

[0055] Preferably, the control mechanism 4 can adopt solar energy or mobile power supply, etc., which can effectively prevent the samples inside the sample storage cabin 1 from being damaged in the case of power outage.

[0056] Furthermore, a pressure relief component 5 is provided on the cooling chamber 31 , and the pressure relief component 5 can relieve pressure and exhaust air in the cooling chamber 31 .

[0057] Preferably, the pressure relief component 5 can be exhausted when liquid nitrogen is first added; when the internal pressure is relatively high, the exhaust can be performed actively.

[0058] Furthermore, the rotating storage mechanism 2 includes a driving member 21 and a rotating storage component 22; the driving member 21 is provided on the sample storage cabin 1, and the rotating storage component 22 is provided inside the sample storage cabin 1, the driving member 21 can drive the rotating storage component 22 to rotate, and the rotating storage component 22 can store the basket, and the sample box can be stored on the basket.

[0059] Preferably, the driving member 21 includes a motor and a gear transmission shaft. The motor drives the gear transmission shaft to rotate. The gear transmission shaft is meshedly connected with the gear plate 223, thereby driving the gear plate 223 to rotate, that is, driving the storage disk 222 to rotate.

[0060] Furthermore, the rotating storage assembly 22 includes a vertical storage frame 221, and a plurality of groups of vertical storage frames 221 are circumferentially arranged to form a storage disk 222. A gear disk 223 is arranged at the upper end of the storage disk 222, and the driving member 21 can drive the gear disk 223 to rotate.

[0061] Preferably, the vertical storage frame 221 is a basket that can store sample boxes.

[0062] Furthermore, a vertical channel mechanism 6 is provided on the sample storage chamber 1 , and the samples in the rotating storage mechanism 2 can be stored and accessed through the vertical channel mechanism 6 .

[0063] Preferably, the vertical channel mechanism 6 can be opened or closed. In the open state, the sample box on the vertical storage frame 221 can be scooped by an external scooping mechanism; in the closed state, the external scooping mechanism cannot enter the sample storage cabin 1, thereby preventing the ultra-low temperature environment inside the sample storage cabin 1 from damaging components of the external scooping mechanism and tube picking mechanism.

[0064] Furthermore, the vertical channel mechanism 6 includes a vertical channel, a channel door driver 61, a transmission member 62, and a channel door 63. A vertical channel is opened on the sample storage cabin 1, and a channel door 63 is arranged in the vertical channel. The channel door 63 is connected to the channel door driver 61 at the upper end through the transmission member 62. The channel door driver 61 drives the channel door 63 through the transmission member 62 to open and close the vertical channel.

[0065] Furthermore, it also includes a control box 7, which is arranged on the side of the sample storage cabin 1. The control box 7 can control and adjust the temperature inside the sample storage cabin 1.

[0066] Furthermore, a power distribution system 71 , a condenser 72 , and a control component 73 are provided in the control box 7 ; the power distribution system 71 can distribute power to the equipment, and the condenser 72 and the control component 73 can control the temperature of the sample storage compartment 1 .

[0067] In summary, the utility model has a better cold storage effect of samples through the multifunctional ultra-low temperature refrigerator with both liquid and electric functions; the liquid nitrogen can be added for a long time, which reduces the cost of using liquid nitrogen, and can achieve automatic adjustable temperature from +5°C to -200°C without the need for a refrigerant medium, which is more energy-saving and environmentally friendly and reduces the cost of use.

[0068] Example 2

[0069] Reference Figure 8 , which is the second embodiment of the utility model, is based on embodiment 1. The automatically adjustable low-temperature storage device includes a sample storage cabin 1, a rotating storage mechanism 2, and a refrigeration cycle mechanism 3. The rotating storage mechanism 2 is provided in the sample storage cabin 1. The rotating storage mechanism 2 can be rotated in the sample storage cabin 1, and a basket with samples stored on it can be stored. The sample storage cabin 1 can be cooled by the refrigeration cycle mechanism 3.

[0070] Specifically, there are a sample storage cabin 1, a rotating storage mechanism 2, and a refrigeration cycle mechanism 3; a rotatable rotating storage mechanism 2 is provided in the sample storage cabin 1, and a refrigeration cycle mechanism 3 is provided on the sample storage cabin 1. The refrigeration cycle mechanism 3 can circulate and cool the sample storage cabin 1, and the rotating storage mechanism 2 can store samples.

[0071] Preferably, the refrigeration cycle mechanism 3 can circulate refrigeration on the sample storage compartment 1. Even in the case of a power outage, the sample storage compartment 1 can be cooled, thereby avoiding damage to the sample due to power outage.

[0072] Preferably, the refrigeration cycle mechanism 3 is Stirling refrigeration.

[0073] Furthermore, the refrigeration cycle mechanism 3 includes a cooling chamber 31 and a refrigerator 32; the cooling chamber 31 is arranged inside the sample storage chamber 1 and on the inner side of the rotating storage mechanism 2, the refrigerator 32 is arranged above the sample storage chamber 1, and the upper end of the cooling chamber 31 is connected to the refrigerator 32. The refrigerator 32 can receive the vaporized nitrogen in the cooling chamber 31, and liquefy the nitrogen and return it to the cooling chamber 31.

[0074] Preferably, the liquid nitrogen in the cooling chamber 31 will naturally vaporize, and the vaporized nitrogen will enter the upper end. The refrigerator 32 will liquefy the vaporized nitrogen and flow it into the bottom of the cooling chamber 31 again, thereby performing circulating refrigeration even in the event of a power outage.

[0075] Furthermore, the rotating storage mechanism 2 can drive the cooling chamber 31 to rotate. The extended end of the refrigerator 32 is arranged inside the cooling chamber 31. The cooling chamber 31 is provided with cooling liquid. The cooling chamber 31 is the central rotating shaft, and the upper end is connected to the refrigeration cycle mechanism 3.

[0076] Preferably, the upper end of the cooling chamber 31 rotates around the refrigerator 32 .

[0077] Preferably, the cooling chamber 31 in this embodiment is connected to the gear plate 223, and the cooling chamber 31 drives the storage plate 222 to rotate, thereby driving the vertical storage frame 221 to rotate in a circle.

[0078] Preferably, the cooling chamber 31 is disposed in the middle of the rotating storage mechanism 2 , so as to facilitate low-temperature refrigeration of the sample boxes and sample tubes on the rotating storage mechanism 2 .

[0079] Preferably, a cooling liquid is provided in the cooling chamber 31, and the cooling liquid can assist in refrigeration.

[0080] Furthermore, the rotating storage mechanism 2 includes a driving member 21 and a rotating storage component 22; the driving member 21 is provided on the sample storage cabin 1, and the rotating storage component 22 is provided inside the sample storage cabin 1, the driving member 21 can drive the rotating storage component 22 to rotate, and the rotating storage component 22 can store the basket, and the sample box can be stored on the basket.

[0081] Preferably, the driving member 21 includes a motor and a gear transmission shaft. The motor drives the gear transmission shaft to rotate. The gear transmission shaft is meshedly connected with the gear plate 223, thereby driving the gear plate 223 to rotate, that is, driving the storage disk 222 to rotate.

[0082] Furthermore, the rotating storage assembly 22 includes a vertical storage frame 221, and a plurality of groups of vertical storage frames 221 are circumferentially arranged to form a storage disk 222. A gear disk 223 is arranged at the upper end of the storage disk 222, and the driving member 21 can drive the gear disk 223 to rotate.

[0083] Preferably, the vertical storage frame 221 is a basket that can store sample boxes.

[0084] Furthermore, a vertical channel mechanism 6 is provided on the sample storage chamber 1 , and the samples in the rotating storage mechanism 2 can be stored and accessed through the vertical channel mechanism 6 .

[0085] Preferably, the vertical channel mechanism 6 can be opened or closed. In the open state, the sample box on the vertical storage frame 221 can be scooped by an external scooping mechanism; in the closed state, the external scooping mechanism cannot enter the sample storage cabin 1, thereby preventing the ultra-low temperature environment inside the sample storage cabin 1 from damaging components of the external scooping mechanism and tube picking mechanism.

[0086] Furthermore, the vertical channel mechanism 6 includes a vertical channel, a channel door driver 61, a transmission member 62, and a channel door 63. A vertical channel is opened on the sample storage cabin 1, and a channel door 63 is arranged in the vertical channel. The channel door 63 is connected to the channel door driver 61 at the upper end through the transmission member 62. The channel door driver 61 drives the channel door 63 through the transmission member 62 to open and close the vertical channel.

[0087] Furthermore, it also includes a control box 7, which is arranged on the side of the sample storage cabin 1. The control box 7 can control and adjust the temperature inside the sample storage cabin 1.

[0088] Furthermore, a power distribution system 71 , a condenser 72 , and a control component 73 are provided in the control box 7 ; the power distribution system 71 can distribute power to the equipment, and the condenser 72 and the control component 73 can control the temperature of the sample storage compartment 1 .

[0089] Preferably, the cooling chamber 31 is the central rotating shaft, a certain amount of liquid nitrogen is added into the central rotating shaft at one time to seal it, the Stirling machine is turned on, the cooling chamber 31 conducts the liquid nitrogen to naturally vaporize and rise to the top, and then encounters the Stirling refrigerator 32 to cool and liquefy, and the liquid automatically stores down, and the cycle is repeated automatically to achieve balanced cooling effect; a high-pressure Stirling cold head and a high-pressure stainless steel shaft are used to form a high-pressure cavity without pressure relief;

[0090] Due to the high-pressure boiling point difference, the liquefaction ability is improved and the liquid sinks quickly and cools evenly; add liquid once and use it for life. Regardless of whether the power is turned on or stored, the gasified gas such as liquid nitrogen will be compressed in the cavity by itself without affecting safe long-term storage; it is very easy to replace and upgrade, and easy to clean and disinfect, etc.

[0091] In summary, the utility model can drive the cooling chamber 31 to rotate by rotating the storage mechanism 2, and the liquid in the cooling chamber 31 is vaporized and rises into the refrigerator 32. The refrigerator 32 converts the vaporized nitrogen into liquid nitrogen and flows it into the bottom of the cooling chamber 31, so that the vaporized nitrogen is circulated and liquefied, thereby circulating and refrigerating the liquid nitrogen; a cooling liquid is provided in the cooling chamber 31, which can further cool the liquid nitrogen and improve the cooling effect. It can achieve one-time liquid addition and lifelong use, which greatly reduces the cost of using liquid nitrogen.

[0092] Example 3

[0093] Reference Fig. 9 , Fig.10 , which is the third embodiment of the utility model, is based on embodiment 1, and the automatically adjustable low-temperature storage device includes a sample storage cabin 1, a rotating storage mechanism 2, and a refrigeration cycle mechanism 3. The rotating storage mechanism 2 is provided in the sample storage cabin 1, and the rotating storage mechanism 2 can be used to rotate in the sample storage cabin 1, and store the basket, on which the samples are stored, and the sample storage cabin 1 can be cooled by the refrigeration cycle mechanism 3.

[0094] Specifically, there are a sample storage cabin 1, a rotating storage mechanism 2, and a refrigeration cycle mechanism 3; a rotatable rotating storage mechanism 2 is provided in the sample storage cabin 1, and a refrigeration cycle mechanism 3 is provided on the sample storage cabin 1. The refrigeration cycle mechanism 3 can circulate and cool the sample storage cabin 1, and the rotating storage mechanism 2 can store samples.

[0095] Preferably, the refrigeration cycle mechanism 3 is Stirling refrigeration.

[0096] Preferably, the refrigeration cycle mechanism 3 can circulate refrigeration on the sample storage compartment 1. Even in the case of a power outage, the sample storage compartment 1 can be cooled, thereby avoiding damage to the sample due to power outage.

[0097] Furthermore, the refrigeration cycle mechanism 3 includes a cooling chamber 31 and a refrigerator 32; the cooling chamber 31 is arranged inside the sample storage chamber 1 and on the inner side of the rotating storage mechanism 2, the refrigerator 32 is arranged above the sample storage chamber 1, and the upper end of the cooling chamber 31 is connected to the refrigerator 32. The refrigerator 32 can receive the vaporized nitrogen in the cooling chamber 31, and liquefy the nitrogen and return it to the cooling chamber 31.

[0098] Furthermore, the rotating storage mechanism 2 can drive the cooling chamber 31 to rotate. The cooling chamber 31 is an integrated structure with a central rotating shaft, and liquid nitrogen is built in the cooling chamber 31.

[0099] Preferably, the cooling chamber 31 in this embodiment is an integrated structure of a central shaft, the shaft is hollow and a certain amount of liquid nitrogen is injected once and sealed.

[0100] Moreover, the central axis can rotate at an angle of 0-190°, and of course it can also be designed to rotate 360 ​​degrees. For structure, liquid filling and assembly, the two ends of the thick-walled hollow stainless steel pipe are processed according to the requirements of the rotating axis, and the Stirling and the axis can be clamped.

[0101] First, insert the cooling chamber 31 shaft vertically into the liquid nitrogen for cooling and adding liquid at the same time, then connect the Stirling refrigerator 32 to the shaft with a clamp, and after debugging is completed, the entire set of finished machines can be stored naturally. +5℃~-200℃ automatic adjustable technology

[0102] It should be noted that:

[0103] ① Stirling liquid-gas integrated cooling shaft.

[0104] A certain amount of liquid nitrogen is added into the rotating shaft at one time to seal it, and the Stirling refrigeration machine 32 is turned on. The rotating shaft conducts the liquid nitrogen to gasify and rise to the top, and then the Stirling refrigeration machine 32 cools and liquefies the liquid. The liquid automatically stores down, and the cycle is repeated automatically to achieve a balanced cooling effect.

[0105] ②Use high-pressure Stirling cold head and high-pressure stainless steel shaft to form a high-pressure cavity without pressure relief;

[0106] ③Due to the high pressure boiling point difference, the liquefaction ability is improved and the liquid sinks quickly and cools evenly.

[0107] ④Add liquid once and use it for life. Regardless of whether the power is turned on or stored, the gasified gas such as liquid nitrogen will be compressed in the cavity by itself without affecting the safe long-term storage.

[0108] ⑤ Very easy to replace, upgrade, clean and disinfect.

[0109] Furthermore, a driving member 21 is provided at the upper end of the sample storage cabin 1, and a gear plate 223 is provided at the upper end of the cooling cabin 31, and the gear plate 223 is provided on one side of the driving member 21. The driving member 21 can drive the gear plate 223 and the cooling cabin 31 to rotate, and a rotating storage component 22 is provided inside the sample storage cabin 1, and the cooling cabin 31 can drive the rotating storage component 22 to rotate.

[0110] Preferably, the driving member 21 adopts a motor and a transmission gear, which meshes with the gear plate 223 through the transmission gear, thereby driving the cooling chamber 31 to rotate, and the cooling chamber 31 drives the rotating storage assembly 22 to rotate.

[0111] Preferably, the upper end of the cooling chamber 31 passes through the sample storage chamber 1 to communicate with the refrigerator 32, and the refrigerator 32 and the cooling chamber 31 can be clamped, that is, when the cooling chamber 31 rotates, the refrigerator 32 will not rotate with it.

[0112] Preferably, the cooling chamber 31 is disposed in the middle of the rotating storage mechanism 2 , so as to facilitate low-temperature refrigeration of the sample boxes and sample tubes on the rotating storage mechanism 2 .

[0113] Preferably, the liquid nitrogen in the cooling chamber 31 will naturally vaporize, and the vaporized nitrogen will enter the upper end. The refrigerator 32 will liquefy the vaporized nitrogen and flow it into the bottom of the cooling chamber 31 again, thereby performing circulating refrigeration even in the event of a power outage.

[0114] Preferably, in this embodiment, no cryogen medium is required, which is environmentally friendly and saves liquid nitrogen, thereby reducing costs.

[0115] Furthermore, the rotating storage assembly 22 includes a vertical storage frame 221, and multiple groups of vertical storage frames 221 are circumferentially arranged to form a storage disk 222. A turntable 225 is arranged on the upper end of the storage disk 222. The turntable 225 is connected to the cooling chamber 31. The rotation of the cooling chamber 31 can drive the turntable 225 and the storage disk 222 to rotate.

[0116] Furthermore, a vertical channel mechanism 6 is provided on the sample storage chamber 1 , and the samples in the rotating storage mechanism 2 can be stored and accessed through the vertical channel mechanism 6 .

[0117] Preferably, the vertical channel mechanism 6 can be opened or closed. In the open state, the sample box on the vertical storage frame 221 can be scooped by an external scooping mechanism; in the closed state, the external scooping mechanism cannot enter the sample storage cabin 1, thereby preventing the ultra-low temperature environment inside the sample storage cabin 1 from damaging components of the external scooping mechanism and tube picking mechanism.

[0118] Furthermore, the vertical channel mechanism 6 includes a vertical channel, a channel door driver 61, a transmission member 62, and a channel door 63. A vertical channel is opened on the sample storage cabin 1, and a channel door 63 is arranged in the vertical channel. The channel door 63 is connected to the channel door driver 61 at the upper end through the transmission member 62. The channel door driver 61 drives the channel door 63 through the transmission member 62 to open and close the vertical channel.

[0119] Furthermore, it also includes a control box 7, which is arranged on the side of the sample storage cabin 1. The control box 7 can control and adjust the temperature inside the sample storage cabin 1.

[0120] Furthermore, a power distribution system 71 , a condenser 72 , and a control component 73 are provided in the control box 7 ; the power distribution system 71 can distribute power to the equipment, and the condenser 72 and the control component 73 can control the temperature of the sample storage compartment 1 .

[0121] In summary, the utility model reduces the consumption of liquid nitrogen and the cost of long-term use by adopting a cooling chamber 31 with an integrated Stirling refrigerator 32 and a central shaft; it is easy to disassemble and replace, and easy to clean and disinfect; it is more energy-saving and environmentally friendly and reduces the cost of use; it can be used for a lifetime after one-time liquid addition. Regardless of whether the power is turned on or not, the vaporized liquid nitrogen can be liquefied by the Stirling refrigerator 32 to achieve circulating refrigeration of the liquid nitrogen, and no refrigerant medium is required, which is more environmentally friendly. It can also achieve an automatically adjustable temperature of +5°C to -200°C in the sample storage chamber 1. The utility model greatly saves the cost of liquid nitrogen.

[0122] 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 of performing the function described herein, and is not only structurally equivalent but also 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.

[0123] 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.

[0124] It will be appreciated 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 will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0125] 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. An automatically adjustable low-temperature storage device, characterized in that: The invention comprises a sample storage chamber (1), a rotating storage mechanism (2), and a refrigeration cycle mechanism (3); the sample storage chamber (1) is provided with a rotatable rotating storage mechanism (2), the sample storage chamber (1) is provided with a refrigeration cycle mechanism (3), the refrigeration cycle mechanism (3) can circulate refrigeration on the sample storage chamber (1), and the rotating storage mechanism (2) can store samples.

2. The automatically adjustable low-temperature storage device according to claim 1, characterized in that: The refrigeration cycle mechanism (3) comprises a cooling chamber (31) and a refrigerator (32); the cooling chamber (31) is arranged inside the sample storage chamber (1) and inside the rotating storage mechanism (2); the refrigerator (32) is arranged above the sample storage chamber (1); the upper end of the cooling chamber (31) is connected to the refrigerator (32); the refrigerator (32) can receive vaporized nitrogen in the cooling chamber (31), liquefy the nitrogen and return it to the cooling chamber (31).

3. The automatically adjustable low-temperature storage device according to claim 2, characterized in that: The cooling chamber (31) is a liquid nitrogen tank and is fixedly arranged in the sample storage chamber (1); the liquid nitrogen tank is provided with a liquid adding system.

4. The automatically adjustable low-temperature storage device according to claim 3, characterized in that: The refrigerator (32) comprises a refrigeration module (321), a first pipe (322), and a second pipe (323); the upper ends of the first pipe (322) and the second pipe (323) are connected to the refrigeration module (321), the lower end of the first pipe (322) is arranged at an upper position of the cooling chamber (31), and the lower end of the second pipe (323) is arranged at a lower position of the cooling chamber (31).

5. The automatically adjustable low-temperature storage device according to claim 3, characterized in that: A control mechanism (4) is also provided above the sample storage chamber (1), and the control mechanism (4) can cool the cooling chamber (31).

6. The automatically adjustable low-temperature storage device according to claim 3, characterized in that: The cooling chamber (31) is also provided with a pressure relief component (5), and the pressure relief component (5) can relieve pressure and exhaust air in the cooling chamber (31).

7. The automatically adjustable low-temperature storage device according to claim 2, characterized in that: The rotating storage mechanism (2) can drive the cooling chamber (31) to rotate. The extended end of the refrigerator (32) is arranged inside the cooling chamber (31). A cooling liquid is arranged inside the cooling chamber (31). The cooling chamber (31) is a central rotating shaft, and the upper end is connected to the refrigeration cycle mechanism (3).

8. The automatically adjustable low-temperature storage device according to claim 2, characterized in that: The rotating storage mechanism (2) can drive the cooling chamber (31) to rotate; the cooling chamber (31) is an integrated structure with a central rotating shaft; and liquid nitrogen is built into the cooling chamber (31).

9. The automatically adjustable low-temperature storage device according to any one of claims 1 to 7, characterized in that: The rotating storage mechanism (2) comprises a driving member (21) and a rotating storage assembly (22); the driving member (21) is arranged on the sample storage chamber (1), and the rotating storage assembly (22) is arranged inside the sample storage chamber (1); the driving member (21) can drive the rotating storage assembly (22) to rotate, and the rotating storage assembly (22) can store the basket.

10. The automatically adjustable low-temperature storage device according to claim 9, characterized in that: The rotating storage assembly (22) comprises a vertical storage frame (221), a plurality of groups of the vertical storage frames (221) are circumferentially arranged to form a storage disk (222), a gear disk (223) is arranged at the upper end of the storage disk (222), and the driving member (21) can drive the gear disk (223) to rotate.

11. The automatically adjustable low-temperature storage device according to claim 8, characterized in that: The sample storage chamber (1) is provided with a driving member (21) at the upper end, the cooling chamber (31) is provided with a gear plate (223) at the upper end, and the gear plate (223) is provided on one side of the driving member (21), the driving member (21) can drive the gear plate (223) and the cooling chamber (31) to rotate, the sample storage chamber (1) is provided with a rotating storage assembly (22) inside, and the cooling chamber (31) can drive the rotating storage assembly (22) to rotate.

12. The automatically adjustable low-temperature storage device according to claim 11, characterized in that: The rotating storage assembly (22) comprises a vertical storage frame (221), a plurality of groups of the vertical storage frames (221) are circumferentially arranged to form a storage disk (222), a rotating disk (225) is arranged at the upper end of the storage disk (222), the rotating disk (225) is connected to the cooling chamber (31), and the rotation of the cooling chamber (31) can drive the rotating disk (225) and the storage disk (222) to rotate.

13. The automatically adjustable low-temperature storage device according to any one of claims 1 to 8, characterized in that: The sample storage compartment (1) is provided with a vertical channel mechanism (6), through which the samples in the rotating storage mechanism (2) can be stored and accessed.

14. The automatically adjustable low-temperature storage device according to claim 13, characterized in that: The vertical channel mechanism (6) comprises a vertical channel, a channel door driving member (61), a transmission member (62), and a channel door (63). The sample storage chamber (1) is provided with a vertical channel, and a channel door (63) is arranged in the vertical channel. The channel door (63) is connected to the channel door driving member (61) at the upper end through the transmission member (62). The channel door driving member (61) drives the channel door (63) through the transmission member (62) to open and close the vertical channel.

15. The automatically adjustable low-temperature storage device according to any one of claims 1 to 8, characterized in that: It also comprises a control box (7), which is arranged on the side of the sample storage compartment (1), and the control box (7) can control and adjust the temperature inside the sample storage compartment (1).

16. The automatically adjustable low-temperature storage device according to claim 15, characterized in that: The control box (7) is provided with a power distribution system (71), a condenser (72), and a control component (73); the power distribution system (71) can distribute power to the equipment, and the condenser (72) and the control component (73) can control the temperature of the sample storage compartment (1).

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