Dewar tank capable of automatically identifying refrigeration cavity

Abstract

The invention relates to the technical field of low-temperature storage equipment, in particular to a Dewar tank capable of automatically identifying a refrigeration cavity, which comprises a tank body, a tank cover, a cold source bin, a sample bin and a driving motor, the refrigeration cavity comprises a bin body with the refrigeration cavity and a main bin cover arranged on the bin body. According to the invention, the main bin cover is provided with different colors of cavity covers in one-to-one correspondence with the refrigeration cavities, and the cavity covers are matched with an observation window on the sampling cover and an industrial camera above the observation window on the tank cover, so that when a biological sample in a specified refrigeration cavity needs to be taken out, the correct refrigeration cavity can be rotated to a position below a sampling opening; therefore, an operator does not need to repeatedly rotate and observe the sample bin to find the corresponding refrigeration cavity, and the target refrigeration cavity can be quickly positioned, so that the sampling efficiency can be improved, the exposure time of the sampling port and the refrigeration cavity in the sampling process can be shortened, and the loss of a cold source can be reduced.

Description

Technical Field

[0001] This invention relates to the field of cryogenic storage equipment technology, and more particularly to a Dewar jar that can automatically identify the refrigeration chamber. Background Technology

[0002] A Dewar flask is a device used for cryopreservation of biological samples. Although current large Dewar flasks have rotatable sample chambers with multiple cryogenic cavities, it is impossible to rotate a specific cryogenic cavity to be below the sampling port. Operators need to repeatedly rotate and observe the sample chamber to find the corresponding cavity. This time-consuming process increases exponentially, especially when there are many cryogenic cavities in the sample chamber, resulting in low sampling efficiency and significant loss of cold source.

[0003] It is evident that existing technologies need improvement and enhancement. Summary of the Invention

[0004] The purpose of this invention is to provide a Dewar jar that can automatically identify the refrigeration cavity, in order to solve the problems of existing Dewar jars being unable to rotate the designated refrigeration cavity to below the sampling port, resulting in low sampling efficiency and large loss of cold source.

[0005] This invention provides a Dewar jar capable of automatically identifying refrigeration chambers, comprising a jar body, a jar lid, a cold source chamber located at the bottom of the jar body, a sample chamber rotatably disposed within the jar body and above the cold source chamber, and a drive motor disposed on the jar lid and pulsatorically connected to the sample chamber; the sample chamber includes a jar body having multiple refrigeration chambers and a main jar lid covering the jar body; the main jar lid has multiple openings corresponding to the refrigeration chambers respectively; each opening has a jar lid, and each jar lid is a different color; the jar lid has a sampling port, the sampling port has a sampling lid, the sampling lid has an observation window, and an industrial camera is also disposed on the jar lid above the observation window, the industrial camera being used to detect the jar lids.

[0006] Optionally, the sampling cover includes an upper cover and a lower heat insulation part; the observation window is fixedly embedded in the upper cover, the lower heat insulation part is fixed to the bottom of the upper cover, and a light-transmitting hole is provided on the lower heat insulation part below the observation window.

[0007] Optionally, a support tube is vertically provided on the can lid; a support rod is rotatably provided inside the support tube, and a swing arm is connected to the upper end of the support rod; the swing arm is horizontally arranged; and the industrial camera is detachably mounted on one end of the swing arm.

[0008] Optionally, the swing arm is connected to a mounting plate, and the swing arm is provided with multiple reinforcing ribs; the reinforcing ribs are connected to the mounting plate; the industrial camera is detachably mounted on the mounting plate.

[0009] Optionally, a slip ring is fixedly provided around the outer wall of the sample chamber; an annular slide rail is fixedly provided on the inner wall of the tank; and a slide groove that cooperates with the slip ring is provided on the annular slide rail.

[0010] Optionally, multiple positioning screws are fixed at intervals along the circumference of the top of the silo body; the main silo cover is provided with positioning holes for the positioning screws to pass through; a nut is fitted on the positioning screw; the nut presses against the top of the main silo cover; and an annular sealing gasket is provided at the bottom of the main silo cover to contact the top of the silo body.

[0011] Optionally, a heat insulation layer is provided above the cold source chamber; a heating component is provided above the heat insulation layer; the heating component is located below the bottom of the sample chamber, and the heating component includes a heating plate, a heating tube fixed on the top of the heating plate, and an annular heat shield plate arranged around the heating plate.

[0012] Optionally, the bottom of the heating plate and the outer side of the annular heat shield are both provided with a heat insulation coating.

[0013] Optionally, the heating tube is a ceramic heating tube, and multiple heating tubes are provided and distributed in a fan shape.

[0014] Optionally, the drive motor is fixedly mounted above the tank cover, and the output shaft of the drive motor is connected to a rotating shaft via a coupling. The rotating shaft passes downward through the tank cover and is detachably connected to the main compartment cover.

[0015] Beneficial effects: This invention provides a Dewar canister that can automatically identify refrigerated chambers. By setting different colored chamber covers on the main chamber cover that correspond one-to-one with each refrigerated chamber, and in conjunction with the observation window on the sampling cover and the industrial camera above the observation window on the canister cover, the correct refrigerated chamber can be rotated to the area below the sampling port when a biological sample needs to be retrieved from a designated refrigerated chamber. Therefore, the operator does not need to repeatedly rotate and observe the sample compartment to find the corresponding refrigerated chamber, and can quickly locate the target refrigerated chamber, thereby improving sampling efficiency and reducing the exposure time of the sampling port and refrigerated chamber during the sampling process, thus reducing the loss of cold source. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 The present invention provides a structural disassembly of a Dewar jar capable of automatically identifying the refrigeration chamber. Figure 1 .

[0018] Figure 2 yes Figure 1 Enlarged view of section A.

[0019] Figure 3 yes Figure 1 Enlarged view of section B.

[0020] Figure 4 yes Figure 1 Enlarged view of section C.

[0021] Figure 5 The present invention provides a structural disassembly of a Dewar jar capable of automatically identifying the refrigeration chamber. Figure 2 .

[0022] Figure 6 yes Figure 5 Enlarged view of section D.

[0023] Figure 7 yes Figure 5 Enlarged view of section E in the middle.

[0024] Figure 8 This is a schematic diagram of the can lid.

[0025] Figure 9 This is a schematic diagram of the structure of the heating component.

[0026] Figure 10 This is a schematic diagram of the cold source compartment inside the tank.

[0027] Figure 11 This is a schematic diagram of the sampling cover.

[0028] Explanation of icon numbers: 1-Tank body; 101-Air inlet; 102-Exhaust outlet; 2-Tank cover; 201-Sampling port; 3-Sample compartment; 31-Compartment body; 311-Refrigerated chamber; 32-Main compartment cover; 33-Cavity cover; 4-Cold source compartment; 5-Drive motor; 6-Sampling cover; 61-Upper cover; 62-Lower insulation; 621-Light transmission hole; 7-Observation window; 8-Industrial camera; 9-Support tube; 10-Support rod; 11-Swing arm; 12-Mounting plate; 13-Reinforcing rib; 14-Slip ring; 15-Annular slide rail; 151-Slide groove; 16-Positioning screw; 17-Nut; 18-Insulation layer; 19-Heating component; 191-Heating plate; 192-Heating tube; 193-Annular heat shield; 20-Coupling; 21-Rotating shaft. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0031] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0032] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0033] Please see Figures 1 to 11 The present invention provides a Dewar jar that can automatically identify the refrigeration chamber 311, including a jar body 1, a jar lid 2, a cold source chamber 4, a sample chamber 3, and a drive motor 5.

[0034] Specifically, the can lid 2 is fitted onto the can body 1. The cold source compartment 4 is located at the bottom of the can body 1 and is used to store a cold source, which can be liquid nitrogen. The sample compartment 3 is rotatably mounted inside the can body 1 and located above the cold source compartment 4. The sample compartment 3 includes a compartment body 31 with multiple refrigeration chambers 311 and a main compartment lid 32 covering the compartment body 31. The drive motor 5 is mounted on the can lid 2 and is connected to the sample compartment 3 for transmission, so that the sample compartment 3 can be rotated when samples need to be taken out or placed. In order to achieve sampling, the can lid 2 is provided with a sampling port 201, and a sampling cover 6 is provided at the sampling port 201.

[0035] Furthermore, the main compartment cover 32 is provided with multiple openings corresponding to the refrigeration chamber 311; each opening is provided with a chamber cover 33, and each chamber cover 33 is a different color. The sampling cover 6 is provided with an observation window 7, and an industrial camera 8 is also provided on the can cover 2 above the observation window 7. The industrial camera 8 is electrically connected to a controller for controlling the drive motor 5, and the industrial camera 8 is used to detect the chamber cover 33.

[0036] In actual use of the Dewar jar, the refrigeration chambers 311 under the different colored chamber lids 33 can be used to store different biological samples, and the color information of the chamber lid 33 corresponding to the biological sample can be pre-stored in the controller. When it is necessary to take out a biological sample from a specific refrigeration chamber 311, the operator inputs the color information of the chamber lid 33 corresponding to the target biological sample into the controller. When the industrial camera 8 is working, it can detect the color of the chamber lid 33 on the sample chamber 3 during rotation through the observation window 7. When the industrial camera 8 recognizes the chamber lid 33 of the target color, it immediately feeds back to the controller, and the controller then controls the drive motor 5 to stop running, so that the corresponding refrigeration chamber 311 rotates to below the sampling port 201. Therefore, the operator does not need to repeatedly rotate and observe the sample chamber 3 to find the corresponding refrigeration chamber 311, and can quickly locate the target refrigeration chamber 311, thereby improving sampling efficiency and reducing the exposure time of the sampling port 201 and the refrigeration chamber 311 during the sampling process, so as to reduce the loss of the cold source.

[0037] Specifically, the inner wall of the tank 1 is provided with multiple cold source release holes, which are connected to the cold source chamber 4 via pipes, thereby releasing the cold source in the cold source chamber 4 to the surrounding area of ​​the sample chamber 3. The outer wall of the sample chamber 3 can be formed of a material with a high thermal conductivity, so the cold carried by the cold source can be transferred to the refrigeration chamber 311 inside the sample chamber 3, thus enabling biological preservation. More preferably, an electric valve can be installed on the aforementioned pipes. When sampling is required, the electric valve can be closed, preventing the cold source from being delivered into the tank 1, thereby reducing cold source loss and not affecting the normal detection of the chamber cover 33 by the industrial camera 8.

[0038] Preferably, a color plate is provided on the top of the cavity cover 33, and a heat insulation material is provided between the color plate and the cavity cover 33. A dry gas inlet 101 and an exhaust port 102 are provided on the top of the tank body 1, located between the cavity cover 33 and the tank cover 2. The dry gas inlet is connected to a dry gas storage tank, and the exhaust port is connected to an exhaust pipe; each of the dry gas inlet and exhaust ports is equipped with a valve. After the tank cover 2 is opened multiple times, a small amount of ice crystals may condense below the color plate or the observation window 7, affecting the industrial camera 8. By closing the cold source release hole and opening the dry gas inlet and exhaust port before rotating the sample chamber 3, dry gas is introduced into the space between the cavity cover 33 and the tank cover 2 through the dry gas inlet, causing the ice crystals to sublimate under the action of dry and relatively high-temperature gas and be discharged through the exhaust port. This ensures that even after the tank cover 2 is opened multiple times, the industrial camera 8 will not be affected by the condensed ice crystals when detecting the color plate.

[0039] like Figure 1 , Figure 2 , Figure 8 as well as Figure 11 As shown, in an optional embodiment, the sampling cover 6 includes an upper cover portion 61 and a lower heat insulation portion 62; the observation window 7 is fixedly embedded in the upper cover portion 61, the lower heat insulation portion 62 is fixed to the bottom of the upper cover portion 61, and a light-transmitting hole 621 is provided on the lower heat insulation portion 62 below the observation window 7. In this embodiment, the lower heat insulation portion 62 can be embedded in the sampling port 201, which can effectively block the cold source inside the tank 1 from dissipating upwards and reduce cold loss; moreover, the light-transmitting hole 621 on the lower heat insulation portion 62 corresponding to the observation window 7 can ensure that light can pass through smoothly and does not affect the industrial camera 8's recognition of the color of the cavity cover 33.

[0040] For example, the lower insulation part 62 can be polyurethane foam, which has outstanding insulation performance at both normal and low temperatures, is lightweight and has a certain compressive strength, and can effectively prevent the cold source inside the tank from escaping upwards.

[0041] like Figure 1 , Figure 2 , Figure 5 , Figure 6 as well as Figure 8 As shown, in an optional embodiment, a support tube 9 is vertically provided on the can lid 2; a support rod 10 is rotatably provided inside the support tube 9, and a swing arm 11 is connected to the upper end of the support rod 10; the swing arm 11 is horizontally arranged; and the industrial camera 8 is detachably mounted on one end of the swing arm 11. In this embodiment, the swing arm 11 can be swung by the rotational cooperation between the support rod 10 and the support tube 9. When it is necessary to remove the sampling cover 6 from the sampling port 201, the industrial camera 8 can be moved to the side of the sampling cover 6 by swinging the swing arm 11, so as not to affect the removal and installation of the sampling cover 6.

[0042] like Figure 1 and Figure 2 As shown, in an optional embodiment, the swing arm 11 is connected to a mounting plate 12, and the swing arm 11 is provided with multiple reinforcing ribs 13; the reinforcing ribs 13 are connected to the mounting plate 12; the industrial camera 8 is detachably mounted on the mounting plate 12. The reinforcing ribs 13 enhance the connection strength between the swing arm 11 and the mounting plate 12, while also improving the load-bearing capacity of the swing arm 11. This prevents the swing arm 11 from experiencing a decrease in structural strength due to the industrial camera 8 being mounted at one end, thus avoiding the possibility of the industrial camera 8 falling downwards.

[0043] like Figure 1 , Figure 3 , Figure 5 as well as Figure 7 As shown, in an optional embodiment, a slip ring 14 is fixedly provided around the outer wall of the sample chamber 3; an annular slide rail 15 is fixedly provided on the inner wall of the tank body 1; and a groove 151 that cooperates with the slip ring 14 is provided on the annular slide rail 15. In this embodiment, the annular slide rail 15 can provide stable guidance and support for the rotation of the sample chamber 3, which can enhance the structural stability of the sample chamber 3 after installation and reduce the safety hazards when using the Dewar jar; while the sliding cooperation between the slip ring 14 and the groove 151 can reduce the frictional resistance when the sample chamber 3 rotates and reduce the operating load of the drive motor 5.

[0044] like Figure 1 and Figure 4 As shown, in an optional embodiment, multiple positioning screws 16 are fixed at intervals along the circumference of the top of the chamber 31; the main chamber cover 32 is provided with positioning holes for the positioning screws 16 to pass through; a nut 17 is fitted on the positioning screw 16; the nut 17 presses against the top of the main chamber cover 32. In this embodiment, the main chamber cover 32 can be firmly and accurately fixed to the top of the chamber 31 by the threaded engagement of the positioning screws 16 and the nuts 17, thereby ensuring the connection between the main chamber cover 32 and the chamber 31 and preventing the main chamber cover 32 from shifting or loosening when the sample chamber 3 rotates or during sampling operations. Moreover, by using the positioning screws 16 to position the main chamber cover 32, the main chamber cover 32 can be accurately installed on the top of the chamber 31, thereby ensuring the accurate position of the corresponding chamber cover 33 of each refrigeration chamber 311, so that during sampling, the industrial camera 8 can be used to rotate the correct refrigeration chamber 311 to below the sampling port 201.

[0045] More preferably, the bottom of the main compartment cover 32 is provided with an annular sealing gasket that contacts the top of the compartment body 31. The annular sealing gasket can tightly fit the connection between the main compartment cover 32 and the compartment body 31, effectively enhancing the sealing between the main compartment cover 32 and the compartment body 31, thereby preventing the cold source inside the compartment body 31 from leaking out from the connection gap, thus maintaining the stability of the refrigeration temperature inside the refrigeration chamber 311.

[0046] like Figure 1 , Figure 5 as well as Figure 9 As shown, in an optional embodiment, a heat insulation layer 18 is provided above the cold source chamber 4; a heating component 19 is provided above the heat insulation layer 18; the heating component 19 is located below the bottom of the sample chamber 3, and the heating component 19 includes a heating plate 191, a heating tube 192 fixedly disposed on the top of the heating plate 191, and an annular heat shield 193 arranged circumferentially around the heating plate 191. In this embodiment, the heat insulation layer 18 can increase the temperature at the bottom of the sample chamber 3, preventing the temperature inside the cold storage cavity 311 of the sample chamber 3 from being too low and affecting the preservation of biological samples. The heating component 19, located above the heat insulation layer 18, can increase the temperature at the bottom of the sample chamber 3, further adjusting the temperature inside the cold storage cavity 311, thereby better balancing the needs of cold storage insulation and sample antifreeze.

[0047] In an optional embodiment, the bottom of the heating plate 191 and the outer side of the annular heat shield 193 are both provided with a heat-insulating coating. The heat-insulating coating can effectively block the heat generated by the heating component 19 from being transferred to the cold source chamber 4. While reducing heat energy waste and ensuring that the heat generated by the heating tube 192 is fully applied to the bottom of the sample chamber 3, it can also prevent the cold source chamber 4 from absorbing heat, thereby ensuring the cooling effect of the cold source.

[0048] In an optional embodiment, the heating tube 192 is a ceramic heating tube 192, and multiple heating tubes 192 are provided and distributed in a fan shape. The ceramic heating tube 192 has the advantages of high temperature resistance, corrosion resistance, good thermal stability, and long service life, thus reducing the maintenance cost of the heating assembly 19. The fan-shaped distribution of the heating tubes 192 can evenly cover the bottom of the sample chamber 3, ensuring that the temperature in each refrigeration chamber 311 is consistent and stable.

[0049] like Figure 8 As shown, in an optional embodiment, the drive motor 5 is fixedly mounted above the tank cover 2, and the output shaft of the drive motor 5 is connected to a rotating shaft 21 via a coupling 20. The rotating shaft 21 passes downward through the tank cover 2 and is detachably connected to the main compartment cover 32. When it is necessary to maintain the inside of the tank 1, the coupling 20 can be separated from the output shaft of the drive motor 5 first, then the drive motor 5 can be removed from the tank cover 2, and then the tank cover 2 can be moved upward to separate the tank cover 2 from the rotating shaft 21, thus exposing the inside of the tank 1, which facilitates the operator to maintain the inside of the tank 1.

[0050] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the inventive concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A Dewar capable of automatically identifying cold storage cavities, comprising a tank body (1), a tank cover (2), a cold source bin (4) arranged at the bottom of the tank body (1), a sample bin (3) rotatably arranged in the tank body (1) and located above the cold source bin (4), and a driving motor (5) arranged on the tank cover (2) and in driving connection with the sample bin (3); the sample bin (3) comprises a bin body (31) provided with a plurality of cold storage cavities (311) and a main bin cover (32) arranged on the bin body (31); characterized in that, The main bin cover (32) is provided with a plurality of cavity openings corresponding to the refrigeration cavities (311) respectively; the cavity openings are provided with cavity covers (33), and the colors of the cavity covers (33) are all different; the jar cover (2) is provided with a sampling opening (201), the sampling opening (201) is provided with a sampling cover (6), the sampling cover (6) is provided with an observation window (7), and the jar cover (2) is further provided with an industrial camera (8) above the observation window (7), and the industrial camera (8) is used for detecting the cavity covers (33).

2. The Dewar with an automatically identifiable refrigeration cavity according to claim 1, characterized in that, The sampling cover (6) comprises an upper cover part (61) and a lower heat insulation part (62); the observation window (7) is fixedly embedded on the upper cover part (61), and the lower heat insulation part (62) is fixed on the bottom of the upper cover part (61), and a light transmission hole (621) is arranged on the lower heat insulation part (62) below the observation window (7).

3. The auto-identifiable cold-fingered dewar of claim 1, wherein, The jar cover (2) is vertically provided with a support pipe (9); the support pipe (9) is rotatably provided with a support rod (10) inside, and the upper end of the support rod (10) is connected with a swing arm (11); the swing arm (11) is horizontally arranged; and the industrial camera (8) is detachably arranged on one end of the swing arm (11).

4. The auto-identifiable cold-finger of claim 3, wherein, The swing arm (11) is connected with a mounting plate (12), and a plurality of reinforcing ribs (13) are arranged on the swing arm (11); the reinforcing ribs (13) are connected with the mounting plate (12); and the industrial camera (8) is detachably arranged on the mounting plate (12).

5. The auto-identifiable cold-finger of claim 1, wherein, The outer wall of the sample bin (3) is fixedly provided with a sliding ring (14) around the sample bin (3); the inner wall of the jar body (1) is fixedly provided with an annular sliding rail (15); and the annular sliding rail (15) is provided with a sliding groove (151) matched with the sliding ring (14).

6. The auto-identifiable cold-finger of claim 1, wherein, A plurality of positioning screws (16) are fixedly arranged on the top of the bin body (31) along the circumference of the bin body (31); the main bin cover (32) is provided with positioning holes through which the positioning screws (16) pass; a nut (17) is sleeved on the positioning screw (16); the nut (17) is pressed against the top of the main bin cover (32); and the bottom of the main bin cover (32) is provided with an annular sealing gasket in contact with the top of the bin body (31).

7. The auto-identifiable cold-finger of claim 1, wherein, The upper portion of the cold source bin (4) is provided with a heat insulation layer (18); the heat insulation layer (18) is provided with a heating assembly (19) above; the heating assembly (19) is located below the bottom of the sample bin (3), and the heating assembly (19) comprises a heating disc (191), a heating pipe (192) fixedly arranged on the top of the heating disc (191), and an annular heat blocking plate (193) arranged circumferentially around the heating disc (191).

8. The auto-identifiable cold-finger of claim 7, wherein, The bottom of the heating disc (191) and the outer side of the annular heat blocking plate (193) are both provided with a heat insulation coating.

9. The auto-identifiable cold-finger of claim 7, wherein, The heating pipe (192) is a ceramic heating pipe, and the heating pipe (192) is provided with a plurality of fan-shaped distribution.

10. The auto-identifiable cold-finger of claim 1, wherein, The driving motor (5) is fixedly arranged above the jar cover (2), and the output shaft of the driving motor (5) is connected with a rotating shaft (21) through a shaft coupling (20), and the rotating shaft (21) is detachably connected with the main bin cover (32) after passing through the jar cover (2) downward.

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