Industrial liquid nitrogen refrigerator device

Abstract

The invention belongs to the technical field of liquid nitrogen refrigerator machinery, and relates to an industrial liquid nitrogen refrigerator device which comprises a liquid nitrogen box, a refrigerating box and an air inlet module, the liquid nitrogen box and the refrigerating box are both arranged to be hollow shells, the refrigerating box is arranged above the liquid nitrogen box, the air inlet module communicates the liquid nitrogen box with a refrigerating box cavity, and the air inlet module comprises a through hole; the through hole is formed in a top plate of the liquid nitrogen box, the air inlet pipe is installed on a bottom plate of the refrigerating box and communicates with the through hole, the adjusting module is arranged on the air inlet module and comprises a baffle movably connected with the through hole, and the baffle is constructed to adjust the moving distance according to different gravity so as to adjust the air inlet amount of the air inlet module. The quantity of cold air entering the refrigerating box can be automatically adjusted according to the quantity of frozen objects, and the utilization rate of liquid nitrogen is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of air-conditioning heat dissipation machinery and relates to an industrial liquid nitrogen refrigerator device. Background Art

[0002] Liquid nitrogen refrigerator is a device that uses liquid nitrogen for refrigeration. It uses the low temperature characteristics of liquid nitrogen to freeze or store objects at low temperatures. Liquid nitrogen has an extremely low boiling point (about -196°C). It absorbs a large amount of heat during its vaporization process, which rapidly reduces the ambient temperature and achieves a refrigeration effect. It can be used for a variety of purposes, such as preserving biological samples and quick freezing of food.

[0003] A Chinese patent with application number CN201921291969.3 discloses a cabinet refrigerator for liquid nitrogen biology, including a refrigerator, a fixed box body installed on the refrigerator, a combined box body installed on the fixed box body, opening and closing doors installed on the side walls of the fixed box body and the combined box body, an air outlet pipe is connected to the top of the fixed box body and the combined box body, a sealing ring is installed inside the air outlet pipe, an air inlet pipe is connected to the bottom of the combined box body, a fixed structure is installed on the side of the combined box body, the fixed structure consists of a fixed plate, a fixed column, a clamping block, a fixed ring and a telescopic spring, a fixed column is installed at the bottom end of the fixed plate, a telescopic groove is opened inside the fixed column, a clamping block is installed in the telescopic groove, one side of the clamping block extends out of the telescopic groove, and the bottom of the part of the clamping block extending out of the telescopic groove is inclined.

[0004] A Chinese patent with application number CN202120782591.8 discloses a new type of information-based laboratory refrigerator. The present invention includes a refrigerator, a placement box is slidably connected to the inside of the movable groove, a partition plate is installed in the middle of the placement box, a limiting hole is opened on one side of the placement box, an insulation layer is arranged inside the refrigerator, a refrigerator is installed on the back of the refrigerator, and an air inlet pipe is arranged on the surface of the air outlet pipe.

[0005] In the above prior art, the number of combined boxes can be changed as needed. However, during use, the above prior art cannot automatically adjust the amount of cold air entering the box according to the actual number of frozen items, which easily causes waste of liquid nitrogen.

[0006] In order to solve the above problems, the present invention proposes an industrial liquid nitrogen refrigerator device. Summary of the invention

[0007] In order to solve the problems existing in the background technology, the present invention proposes an industrial liquid nitrogen refrigerator device.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is as follows: an industrial liquid nitrogen refrigerator device, comprising a liquid nitrogen box and a refrigerated box, wherein the liquid nitrogen box and the refrigerated box are both configured as hollow shells, and the refrigerated box is arranged above the liquid nitrogen box.

[0009] An air intake module, the air intake module connects the liquid nitrogen box and the cold storage box chamber, comprises a through hole, the through hole is opened on the top plate of the liquid nitrogen box, and an air intake pipe, the air intake pipe is installed on the bottom plate of the cold storage box and communicates with the through hole,

[0010] The regulating module is arranged on the air intake module and comprises a baffle movably connected to the through hole. The baffle is constructed to adjust the moving distance according to different gravity, so as to adjust the air intake volume of the air intake module.

[0011] Preferably, the air intake module comprises a first groove, the first groove is coaxially arranged with the through hole, and the first groove is opened above the through hole.

[0012] A sealing block is installed on the bottom plate of the refrigerator, the air inlet pipe is installed on the sealing block, and one end of the air inlet pipe close to the refrigerator is located in the chamber of the refrigerator.

[0013] Preferably, the baffle is located below the through hole, a plurality of fixed blocks are fixedly mounted on the liquid nitrogen box, a sliding hole is provided on the baffle, the fixed block is located in the sliding hole and is slidably connected to the sliding hole, a second spring is fixedly mounted between the sliding hole and the fixed block, one end of the second spring is fixedly mounted on the fixed block, and the other end of the second spring is fixedly mounted on the inner wall of the sliding hole.

[0014] Preferably, the adjustment module comprises: a push block, the push block is slidably mounted in the through hole, the push block is located above the baffle, and the push block is located on one side of the through hole.

[0015] A connecting plate, wherein the connecting plate is provided with two connecting plates respectively located on both sides of the push block and slidably connected with the through hole,

[0016] a first spring, wherein two first springs are provided and correspond to the connecting plates one by one, one end of the first spring is fixed to the connecting plate, and the other end of the first spring is fixed to the bottom wall of the vertical groove,

[0017] A push hole is provided on the baffle plate, the lower end of the push block close to the fixed block is arranged as an inclined surface, and the end surface of the push hole close to the fixed block is matched with the inclined surface of the push block.

[0018] Preferably, a vertical groove cooperating with the connecting plate is formed on the side wall of the through hole, and the connecting plate is slidably connected to the vertical groove.

[0019] Preferably, two regulating modules are provided on each air intake module.

[0020] Preferably, a connection module is provided between the cold storage box and the liquid nitrogen box.

[0021] Preferably, the connection module comprises: a second groove, the second groove is opened on the upper end surface of the liquid nitrogen box,

[0022] a sliding plate, the sliding plate being located in the second groove and being able to slide up and down along the second groove,

[0023] a third spring, wherein the third spring is fixedly mounted below the sliding plate, one end of the third spring is fixed on the sliding plate, and the other end of the third spring is fixed on the bottom wall of the second groove,

[0024] A connecting column, wherein the connecting column is fixedly mounted on the bottom wall of the refrigerator,

[0025] The locking groove is provided on the connecting column and is arranged in plurality along the axial direction of the connecting column. A spring pin cooperating with the locking groove is installed in the second groove.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present application can automatically adjust the distance between the two baffles according to the weight of the items in the refrigerator or the number of items stacked on the upper part of the refrigerator, so as to provide appropriate cold air according to demand, automatically supply sufficient cold air while avoiding excessive waste of cold air, and improve the utilization rate of liquid nitrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0029] Figure 2 is a cross-sectional view of the present invention;

[0030] Figure 3 The present invention Figure 2 Enlarged view of part A in the middle;

[0031] Figure 4 It is a schematic diagram of the cooperation between the push block and the baffle of the present invention;

[0032] Figure 5 is a schematic diagram of the positions of the first groove and the through hole of the present invention;

[0033] Figure 6 The present invention Figure 5 Enlarged view of middle part B;

[0034] Figure 7 The present invention Figure 5 Enlarged view of part C in the middle.

[0035] In the figure: 1, liquid nitrogen box; 2, cold storage box; 3, sealing block; 4, air inlet pipe; 5, connecting column; 6, locking groove; 7, first groove; 8, through hole; 9, push block; 10, connecting plate; 11, first spring; 12, baffle; 13, push hole; 14, sliding hole; 15, fixed block; 16, second spring; 17, second groove; 18, sliding plate; 19, third spring; 20, spring pin. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] like Figure 1-Figure 7 As shown, the technical solution adopted by the present invention is as follows:

[0038] Embodiment 1

[0039] An industrial liquid nitrogen refrigerator device. It includes a liquid nitrogen box 1 and a cold storage box 2. The liquid nitrogen box 1 and the cold storage box 2 are both configured as hollow shells. The cold storage box 2 is arranged above the liquid nitrogen box 1. The cold storage box 2 is used to hold refrigerated items, and the liquid nitrogen box 1 is used for refrigeration.

[0040] An air intake module is provided between the liquid nitrogen box 1 and the cold storage box 2. The air intake module connects the chambers of the liquid nitrogen box 1 and the cold storage box 2. The cold air in the liquid nitrogen box 1 enters the cold storage box 2 through the air intake module.

[0041] Specifically, the air intake module includes a through hole 8 and an air intake pipe 4 .

[0042] The through hole 8 is formed on the top plate of the liquid nitrogen box 1. The air inlet pipe 4 is installed on the bottom plate of the cold storage box 2 and communicates with the through hole 8.

[0043] The cold air in the liquid nitrogen box 1 enters the cold storage box 2 through the through hole 8 and the air inlet pipe 4.

[0044] Furthermore, the air intake module also includes a first groove 7 and a sealing block 3 .

[0045] The first groove 7 is coaxially arranged with the through hole 8 , and the first groove 7 is opened above the through hole 8 .

[0046] The sealing block 3 is mounted on the bottom plate of the refrigerator 2. The air inlet pipe 4 is mounted on the sealing block 3, and one end of the air inlet pipe 4 close to the refrigerator 2 is located in the chamber of the refrigerator 2.

[0047] When the cold storage box 2 is placed on the liquid nitrogen box 1, the sealing block 3 cooperates with the first groove 7 to achieve the positioning effect to facilitate the installation of the cold storage box 2. At the same time, the sealing block 3 can play a sealing role to prevent air leakage at the connection between the through hole 8 and the air inlet pipe 4 when the cold storage box 2 is installed on the liquid nitrogen box 1.

[0048] In order to increase the air intake amount, a plurality of the air intake modules may be provided.

[0049] The air intake module is provided with an adjustment module, and two adjustment modules are arranged on each air intake module.

[0050] The baffle 12 is movably connected to the through hole 8, and the baffle 12 is configured to adjust the moving distance according to the gravity, so as to adjust the air intake of the air intake module. When the gravity of the refrigerator 2 is large, the baffle 12 moves a large distance so that the opening of the through hole 8 is larger, and more cold air enters the refrigerator 2. When the gravity of the refrigerator 2 is small, the baffle 12 moves a small distance so that the opening of the through hole 8 is smaller, and less cold air enters the refrigerator 2. In this way, the amount of cold air entering the refrigerator 2 can be controlled according to the gravity of the refrigerator 2.

[0051] In one embodiment, a gravity sensor may be provided on the refrigerator 2, and an electric rod may be provided on the refrigerator 2. The electric rod and the gravity sensor are connected via a program. The gravity sensor detects the gravity and adjusts the extension and retraction amount of the electric rod.

[0052] As another embodiment, the baffle 12 is located below the through hole 8. A plurality of fixing blocks 15 are fixedly mounted on the liquid nitrogen box 1. A sliding hole 14 is provided on the baffle 12, and the fixing block 15 is located in the sliding hole 14 and is slidably connected to the sliding hole 14.

[0053] A second spring 16 is fixedly mounted between the slide hole 14 and the fixed block 15 . One end of the second spring 16 is fixedly mounted on the fixed block 15 , and the other end of the second spring 16 is fixedly mounted on the inner wall of the slide hole 14 .

[0054] The regulating module comprises: a push block 9 , a connecting plate 10 , a first spring 11 and a push hole 13 .

[0055] The push block 9 is slidably mounted in the through hole 8. The push block 9 is located above the baffle 12, and the push block 9 is located on one side of the through hole 8.

[0056] The connecting plate 10 is provided with two connecting plates 10, which are respectively located on both sides of the push block 9 and are slidably connected with the through hole 8. Specifically, a vertical groove matching with the connecting plate 10 is provided on the side wall of the through hole 8, and the connecting plate 10 is slidably connected with the vertical groove.

[0057] Two first springs 11 are provided and correspond one to one with the connecting plates 10. One end of the first spring 11 is fixed on the connecting plate 10, and the other end of the first spring 11 is fixed on the bottom wall of the vertical groove.

[0058] The push hole 13 is formed on the baffle 12. The lower end of the push block 9 close to the fixed block 15 is configured as an inclined surface, and the end surface of the push hole 13 close to the fixed block 15 is matched with the inclined surface of the push block 9.

[0059] When the cold storage box 2 is not installed on the liquid nitrogen box 1 , the baffles 12 of the two regulating modules completely block the through hole 8 , and the cold air in the liquid nitrogen box 1 cannot flow out.

[0060] When the cold storage box 2 is placed on the liquid nitrogen box 1, the air inlet pipe 4 contacts the upper end of the push block 9 and pushes the push block 9 to move downward, and the first spring 11 is compressed and deformed. When the push block 9 moves downward, the inclined surface of the lower end of the push block 9 contacts the end surface of the push hole 13 close to the fixed block 15, and pushes the baffle 12 to move toward the fixed block 15 through the push hole 13. The fixed block 15 is arranged on the outside of the through hole 8, that is, the baffle 12 moves in the direction away from the axis of the through hole 8, and the two baffles 12 move outward, and there is a gap between the two baffles 12, so that the through hole 8 is opened.

[0061] When the gravity of the cold storage box 2 increases, the distance that the push block 9 descends increases, thereby increasing the distance that the baffle 12 moves outward, so that the opening of the through hole 8 becomes larger. In the above manner, the opening size of the through hole 8 is automatically adjusted according to the gravity of the cold storage box 2, thereby adjusting the amount of cold air from the liquid nitrogen box 1 entering the cold storage box 2.

[0062] When in use, liquid nitrogen is placed in the liquid nitrogen box 1, and the cold storage box 2 with refrigerated items stored inside is placed on the upper part of the liquid nitrogen box 1. When placing, the connecting column 5 is placed in the second groove 17, the sealing block 3 is placed in the first groove 7, and the air inlet pipe 4 enters the through hole 8. Due to the weight of the items inside the cold storage box 2, the sealing block 3 presses the push block 9 downward. The push block 9 overcomes the elastic force of the first spring 11 and moves downward, so that the inclined surface of the push block 9 extends into the push hole 13. And push the baffle 12 to move outward, so that the liquid nitrogen box 1 is connected with the through hole 8, so that the cold air enters the cold storage box 2 from the through hole 8 and the air inlet. Since the sealing block 3 is in sealing contact with the first groove 7 at this time, the cold air will not leak out.

[0063] Embodiment 2

[0064] This embodiment is a further improvement on the first embodiment, and its purpose is to reduce the size of the cold storage box 2 and adjust the space for placing objects according to actual needs.

[0065] Specifically, an industrial liquid nitrogen refrigerator device. The refrigerator box 2 can be provided in plurality, and the plurality of refrigerator boxes 2 are stacked up and down. An air intake module and an adjustment module are installed between adjacent refrigerator boxes 2. The structure of the air intake module and the adjustment module between adjacent refrigerator boxes 2 is the same as that of the air intake module and the adjustment module between the liquid nitrogen box 1 and the refrigerator box 2.

[0066] A connection module is provided between the refrigerated box 2 and the liquid nitrogen box 1 and between adjacent refrigerated boxes 2 .

[0067] The connection module comprises: a second groove 17 , a sliding plate 18 , a third spring 19 , a connection column 5 and a locking groove 6 .

[0068] Wherein: the second groove 17 is provided on the upper end surface of the liquid nitrogen box 1. And the second groove 17 is provided on the upper end surface of the liquid nitrogen box 1.

[0069] The sliding plate 18 is located in the second groove 17 and can slide up and down along the second groove 17 .

[0070] The third spring 19 is fixedly mounted below the sliding plate 18. One end of the third spring 19 is fixed on the sliding plate 18, and the other end of the third spring 19 is fixed on the bottom wall of the second groove 17.

[0071] The connecting column 5 is fixedly mounted on the bottom wall of the cold storage box 2 .

[0072] The locking groove 6 is provided on the connecting column 5 and is arranged in plurality along the axial direction of the connecting column 5. A spring pin 20 matching the locking groove 6 is installed in the second groove 17.

[0073] When in use, another refrigerator 2 is placed on the upper refrigerator 2 or there are many items in the refrigerator 2, and the mass increases, so that the amount of the upper sealing block 3 entering the first groove 7 increases, that is, the force of the push block 9 to overcome the elastic force of the first spring 11 increases, so that the amount of the push block 9 moving downward increases. The amount of the baffle 12 to overcome the external movement of the second spring 16 increases, so that the cold air can enter the through hole 8 through the larger gap between the two baffles 12 and then enter the upper refrigerator 2, thereby meeting the cooling needs of a large amount of materials in the upper refrigerator 2 or providing more cold air upward for the refrigerator 2 above.

[0074] When the items in the upper refrigerator 2 are taken out, the upper refrigerator 2 can be removed and pressurized so that the first spring 11 pushes the push block 9 to move upward, so that the baffle 12 moves inward under the elastic force of the second spring 16, reducing the channel for the cold air to flow upward, thereby reducing the loss of cold air and improving the utilization rate of liquid nitrogen.

[0075] After placing the refrigerator 2, the connecting column 5 moves downward to press the sliding plate 18 and press the spring pin 20 outward, so that the spring pin 20 is inserted into the locking groove 6 after the refrigerator 2 moves to a suitable position, making the refrigerator 2 placed on the upper part more stable and avoiding accidental tipping. When the upper refrigerator 2 needs to be removed, it is only necessary to pull out the spring pin 20 and then lift the refrigerator 2 upward.

[0076] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An industrial liquid nitrogen refrigerator device, comprising a liquid nitrogen box (1) and a cold storage box (2), characterized in that: The liquid nitrogen box (1) and the cold storage box (2) are both configured as hollow shells, and the cold storage box (2) is configured above the liquid nitrogen box (1). An air intake module, the air intake module connects the chambers of the liquid nitrogen box (1) and the cold storage box (2), and comprises a through hole (8), the through hole (8) is opened on the top plate of the liquid nitrogen box (1), and an air intake pipe (4), the air intake pipe (4) is installed on the bottom plate of the cold storage box (2) and communicates with the through hole (8), The regulating module is arranged on the air intake module and comprises a baffle (12) movably connected to the through hole (8); the baffle (12) is constructed to adjust the moving distance according to different gravity, thereby adjusting the air intake volume of the air intake module.

2. The industrial liquid nitrogen refrigerator device according to claim 1, characterized in that: The air intake module comprises a first groove (7), wherein the first groove (7) is coaxially arranged with the through hole (8), and the first groove (7) is opened above the through hole (8). A sealing block (3), wherein the sealing block (3) is mounted on the bottom plate of the refrigerator (2), the air intake pipe (4) is mounted on the sealing block (3), and the end of the air intake pipe (4) close to the refrigerator (2) is located in the chamber of the refrigerator (2).

3. The industrial liquid nitrogen refrigerator device according to claim 1, characterized in that: The baffle (12) is located below the through hole (8); a plurality of fixed blocks (15) are fixedly mounted on the liquid nitrogen box (1); a sliding hole (14) is provided on the baffle (12); the fixed block (15) is located in the sliding hole (14) and is slidably connected to the sliding hole (14); a second spring (16) is fixedly mounted between the sliding hole (14) and the fixed block (15); one end of the second spring (16) is fixedly mounted on the fixed block (15); and the other end of the second spring (16) is fixedly mounted on the inner wall of the sliding hole (14).

4. The industrial liquid nitrogen refrigerator device according to claim 1, characterized in that: The regulating module comprises: a push block (9), the push block (9) is slidably mounted in the through hole (8), the push block (9) is located above the baffle (12), and the push block (9) is located on one side of the through hole (8). A connecting plate (10), wherein the connecting plate (10) is provided with two connecting plates respectively located on both sides of the push block (9) and slidably connected with the through hole (8), a first spring (11), wherein two first springs (11) are provided and correspond one to one with the connecting plate (10), one end of the first spring (11) is fixed on the connecting plate (10), and the other end of the first spring (11) is fixed on the bottom wall of the vertical groove, A push hole (13), wherein the push hole (13) is provided on the baffle (12), the lower end of the push block (9) close to the fixed block (15) is arranged as an inclined surface, and the end surface of the push hole (13) close to the fixed block (15) is matched with the inclined surface of the push block (9).

5. The industrial liquid nitrogen refrigerator device according to claim 4, characterized in that: A vertical groove matched with the connecting plate (10) is provided on the side wall of the through hole (8), and the connecting plate (10) is slidably connected to the vertical groove.

6. The industrial liquid nitrogen refrigerator device according to claim 5, characterized in that: There are two regulating modules on each air intake module.

7. The industrial liquid nitrogen refrigerator device according to claim 1, characterized in that: A connection module is provided between the cold storage box (2) and the liquid nitrogen box (1).

8. The industrial liquid nitrogen refrigerator device according to claim 7, characterized in that: The connection module comprises: a second groove (17), wherein the second groove (17) is formed on the upper end surface of the liquid nitrogen box (1), a sliding plate (18), wherein the sliding plate (18) is located in the second groove (17) and can slide up and down along the second groove (17), a third spring (19), wherein the third spring (19) is fixedly mounted below the sliding plate (18), one end of the third spring (19) is fixed on the sliding plate (18), and the other end of the third spring (19) is fixed on the bottom wall of the second groove (17), A connecting column (5), wherein the connecting column (5) is fixedly mounted on the bottom wall of the refrigerator (2), A locking groove (6), wherein the locking groove (6) is provided on the connecting column (5) and is arranged in a plurality along the axial direction of the connecting column (5); a spring pin (20) matching the locking groove (6) is installed in the second groove (17).

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