A marine cold storage facilitating internal gas circulation in the freezer compartment

Abstract

The present invention relates to the technical field of cold storages, and discloses a marine cold storage facilitating the internal gas circulation of a freezer compartment, which comprises a cold storage body. A storage door is arranged on one side of the cold storage body. A refrigeration box communicated with the inside thereof is arranged on the side wall of the cold storage body. A refrigerating machine is arranged on the refrigeration box, and the refrigeration output end of the refrigerating machine is communicated with the inside of the refrigeration box. The cold storage also comprises a circulating ventilation switching unit; the circulating ventilation switching unit comprises a ventilation component arranged on the cold storage body; a switching component is arranged on the ventilation component; a driving component is arranged on the switching component; through the mutual cooperation of the ventilation component, the switching component and the driving component in the circulating ventilation switching unit, through bidirectional circulation, the cold air is conveyed from top to bottom for a while and from bottom to top for a while, which can effectively promote the mixing of high-temperature and low-temperature air, make the temperature of each area in the cold storage more balanced, avoid obvious temperature gradients, and thus is beneficial to the storage of goods.

Description

Technical Field

[0001] The present invention relates to the technical field of cold storages, and particularly to a marine cold storage facilitating the internal gas circulation of a freezer compartment. Background Art

[0002] A marine cold storage is a refrigeration facility on a ship for storing food and goods. Its design aims to provide fresh food for the crew on board and maintain a suitable temperature environment for the goods during transportation. In modern ships, the cold storage system not only ensures the daily dietary needs of the crew but also relates to the quality of the refrigerated transportation of goods. These cold storages utilize advanced refrigeration technologies to ensure that food and other sensitive items remain fresh and intact during long voyages.

[0003] In the patent with the publication number CN117663589A, a mobile cold storage is disclosed, which includes a cold storage body, a refrigeration system, and a control system. One end of the cold storage body is provided with a door, and universal wheels are installed at the bottom of the cold storage body. The refrigeration system is fixedly connected to one side of the cold storage body; the refrigeration system includes a refrigeration unit at one end of the cold storage body, an evaporator and a circulating fan at the upper part of the inner side of the cold storage body, and the control system includes control components inside the refrigeration unit; by setting up a mobile cold storage, the overall appearance of the cold storage body is square, without components protruding outside the cold storage body, which is overall beautiful and convenient for transportation.

[0004] The prior art has the following defects:

[0005] Since the temperature control accuracy inside the cold storage directly affects the quality retention and shelf life of the stored goods, the cold storage systems in the prior art usually adopt a unidirectional air flow distribution method, that is, cold air blows from a fixed direction towards the goods storage area, and the return air flows back through another direction. However, due to the fixed cold air flow path, some areas inside the cold storage may receive too much cold air, while some other areas may receive too little cold air resulting in a higher temperature. This will cause an obvious temperature gradient inside the same cold storage, resulting in poor temperature uniformity inside the cold storage, thus affecting the uniform refrigeration of the goods, which is very unfavorable for the storage of the goods. Summary of the Invention

[0006] In view of the problems existing in the prior art, a marine cold storage facilitating the internal gas circulation of a freezer compartment is proposed.

[0007] The technical solution of the present invention is: a marine cold storage facilitating the internal gas circulation of a freezer compartment, including a cold storage body, a door is arranged on one side of the cold storage body, a refrigeration box communicated with the inside thereof is arranged on the side wall of the cold storage body, a refrigerator is arranged on the refrigeration box, the refrigeration output end of the refrigerator is communicated with the inside of the refrigeration box, and a circulating ventilation switching unit is further included;

[0008] The circulating ventilation switching unit includes a ventilation component, and the ventilation component is arranged on the cold storage body;

[0009] A switching component is arranged on the ventilation component;

[0010] A driving component is arranged on the switching component;

[0011] The ventilation component includes a circulating treatment box, the circulating treatment box is fixedly connected to the outer side wall of the cold storage body, an air inlet pipe is communicated with one side of the circulating treatment box, a switching housing is communicated with the other side of the circulating treatment box, an upper air outlet pipe is communicated with the upper part of the switching housing, a lower air outlet pipe is communicated with the lower part of the switching housing, and an upper air outlet chamber and a lower air outlet chamber are arranged in the switching housing.

[0012] Further, the switching component includes a switching sphere, an L-shaped air outlet channel is penetrated and opened on the switching sphere, the switching sphere is rotatably connected in the switching housing, a rotating horizontal shaft is fixedly connected to the switching sphere, one end of the rotating horizontal shaft extends into the circulating treatment box and is fixedly connected with a receiving and dialing disc, a plurality of receiving and dialing grooves are circumferentially arranged on the receiving and dialing disc, and a plurality of arc-shaped parts are circumferentially arranged on the receiving and dialing disc.

[0013] Further, the driving component includes a driving horizontal shaft, the driving horizontal shaft is rotatably connected in the circulating treatment box, a driving motor is fixedly connected to the outer side wall of the circulating treatment box, one end of the driving horizontal shaft passes through the box wall of the circulating treatment box and is fixedly connected with the output end of the driving motor, a driving belt pulley is fixedly sleeved on the other end of the driving horizontal shaft, a connecting rod is fixedly connected to the inner wall of the box of the circulating treatment box, a driven shaft is rotatably connected to the connecting rod, a fan blade is fixedly connected to one end of the driven shaft, a driven belt pulley is fixedly sleeved on the driven shaft, the driven belt pulley is in transmission connection with the driving belt pulley through a belt, a driving disc is fixedly sleeved on the driving horizontal shaft, an arc-shaped avoiding part is arranged on the driving disc, a dialing rod is fixedly connected to the driving disc, and the dialing rod is arranged corresponding to the receiving and dialing groove.

[0014] Further, air inlet hoods are fixedly connected to both the inner top and bottom of the cold storage body, a plurality of air inlet holes are uniformly opened on the air inlet hoods, and conical parts are arranged at the centers of the inner sides of the air inlet hoods. The conical part located above is arranged opposite to the air outlet of the upper air outlet pipe, and the conical part located below is arranged opposite to the air outlet of the lower air outlet pipe.

[0015] Further, U-shaped slots are fixedly connected to both the inner top and bottom of the circulating treatment box, a filter screen plate is arranged in the circulating treatment box, and the upper and lower parts of the filter screen plate are respectively slidably inserted into the two U-shaped slots.

[0016] Further, a cleaning brush is arranged on one side of the filter screen plate in the circulation treatment tank. A push-pull rod is fixedly connected to the wall of the cleaning brush. The push-pull rod penetrates and is slidably connected to the circulation treatment tank. An electric cylinder is fixedly connected to the top of the circulation treatment tank. One end of the push-pull rod extends out of the circulation treatment tank and is fixedly connected to the telescopic end of the electric cylinder.

[0017] Further, a collection port is formed on one side of the bottom of the circulation treatment tank corresponding to the filter screen plate. A collection hopper is communicated with the bottom of the circulation treatment tank corresponding to the collection port. A sealing cover is screwed to the bottom end of the collection hopper.

[0018] Further, a box door is arranged on one side of the circulation treatment tank. The bottom of the box door is hinged to the bottom of the circulation treatment tank through a hinge. A connecting block is fixedly connected to the top of the circulation treatment tank. A connecting shaft is rotatably connected to the connecting block. One end of the connecting shaft is fixedly connected to a resisting rod. The resisting rod abuts against one side of the box door. A torsion spring is sleeved on the connecting shaft. One end of the torsion spring is fixedly connected to the connecting block, and the other end of the torsion spring is fixedly connected to the resisting rod.

[0019] Further, a plurality of ultraviolet germicidal lamps are fixedly connected in the circulation treatment tank.

[0020] Advantages of the present invention:

[0021] 1. Through the mutual cooperation of the ventilation component, the switching component and the driving component in the circulation ventilation switching unit, the driving component is used to drive the ventilation component and the switching component. As the switching sphere rotates, the outlet end of the air outlet channel communicates with the upper air outlet chamber every once in a while, and then communicates with the lower air outlet chamber after a while. Thus, the air outlet channel communicates with the upper air outlet chamber and the lower air outlet chamber alternately. In this way, the cold air enters the cold storage body from top to bottom for a while, and then enters the cold storage body from bottom to top after a while. Through the two-way circulation, the cold air is transported from top to bottom for a while and from bottom to top for a while, which can effectively promote the mixing of high and low temperature air, make the temperature of each area in the cold storage more balanced, avoid obvious temperature gradients, and thus is beneficial to the storage of goods.

[0022] 2. The telescopic end of the electric cylinder extends to push the push-pull rod to move, and then drives the cleaning brush to move synchronously. The cleaning brush contacts the side of the filter screen plate with dust adhered to it, and the dust is cleaned and dropped, preventing the filter screen plate from being blocked by too much dust. The dropped dust falls into the collection hopper through the collection port for collection. When it is necessary to clean the dust in the collection hopper, the sealing cover is unscrewed and removed, and the dust in the collection hopper is discharged from the bottom end outlet, which is convenient for cleaning.

[0023] 3. By rotating the blocking rod, the connecting shaft is driven to rotate, and the torsion spring undergoes elastic deformation, adjusting the blocking rod from the vertical state to the horizontal state. At this time, the blocking rod no longer blocks the box door, and the box door is flipped along the hinge point to open the box door. Then, pull the filter screen plate and extract it from the U-shaped slot to remove the filter screen plate for replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the present invention Figure 1 ;

[0025] Figure 2 is a schematic diagram of the overall structure of the present invention Figure 2 ;

[0026] Figure 3 is a cross-sectional view of the whole of the present invention;

[0027] Figure 4 is a partial cross-sectional view of the present invention;

[0028] Figure 5 is a schematic diagram of the structure at the switching component of the present invention;

[0029] Figure 6 is a schematic diagram of the structure at the driving component of the present invention;

[0030] Figure 7 is a schematic diagram of the structure of the driving disc of the present invention;

[0031] Figure 8 is an enlarged view of part B of the present invention;

[0032] Figure 9 is a schematic diagram of the structure at the cleaning brush of the present invention;

[0033] Figure 10 is an enlarged view of part A of the present invention.

[0034] In the figure: 1, cold storage body; 2, storage door; 3, refrigeration box; 4, refrigerating machine; 5, circulation ventilation switching unit; 51, ventilation component; 511, circulation treatment box; 512, air inlet pipe; 513, switching housing; 514, upper air outlet pipe; 515, lower air outlet pipe; 516, upper air outlet chamber; 517, lower air outlet chamber; 52, switching component; 521, switching sphere; 522, air outlet channel; 523, rotating horizontal shaft; 524, receiving and deflecting disc; 525, receiving and deflecting groove; 526, arc portion; 53, driving component; 531, driving horizontal shaft; 532, driving motor; 533, driving pulley; 534, connecting rod; 535, driven shaft; 536, fan blade; 537, driven pulley; 538, driving disc; 539, arc-shaped avoidance portion; 5310, deflecting rod; 6, air inlet hood; 7, air inlet hole; 8, conical portion; 9, U-shaped slot; 10, filter screen plate; 11, cleaning brush; 12, push-pull rod; 13, electric cylinder; 14, collection port; 15, collection hopper; 16, sealing cover; 17, box door; 18, connecting block; 19, connecting shaft; 20, resisting rod; 21, torsion spring; 22, ultraviolet germicidal lamp. Detailed implementation mode

[0035] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation mode of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0036] Embodiment 1:

[0037] Referring to Figures 1-4 , for the first embodiment of the present invention, a marine cold storage facilitating the internal gas circulation of a freezer is provided, including a cold storage body 1. A storage door 2 is arranged on one side of the cold storage body 1, and the storage door 2 can be opened and closed. A refrigeration box 3 communicating with the inside thereof is arranged on the side wall of the cold storage body 1. A refrigerating machine 4 is arranged on the refrigeration box 3, and the refrigeration output end of the refrigerating machine 4 communicates with the inside of the refrigeration box 3. A circulation ventilation switching unit 5 is further included;

[0038] The circulation ventilation switching unit 5 includes a ventilation component 51, and the ventilation component 51 is arranged on the cold storage body 1; the ventilation component 51 includes a circulation treatment box 511, and the circulation treatment box 511 is fixedly connected to the outer side wall of the cold storage body 1. An air inlet pipe 512 communicates with one side of the circulation treatment box 511, and a switching housing 513 communicates with the other side of the circulation treatment box 511. An upper air outlet pipe 514 communicates with the upper part of the switching housing 513, and a lower air outlet pipe 515 communicates with the lower part of the switching housing 513. An upper air outlet chamber 516 and a lower air outlet chamber 517 are arranged in the switching housing 513; a switching component 52 is arranged on the ventilation component 51; a driving component 53 is arranged on the switching component 52.

[0039] Specifically, by placing goods in the cold storage body 1, wherein the door 2 can be opened and closed, the operator can enter the cold storage body 1 by opening the door 2, and the air entering the refrigeration box 3 is refrigerated by the refrigeration output end of the refrigeration machine 4, and the refrigeration box 3 is connected to the cold storage body 1, then the air in the cold storage body 1 can enter the refrigeration box 3, and the cold air in the refrigeration box 3 enters the circulation treatment box 511 through the air inlet pipe 512, and then enters the switching shell 513, and finally the cold air can enter the cold storage body 1 through the upper air outlet pipe 514 or the lower air outlet pipe 515 through the switching shell 513.

[0040] Reference Figures 1-5 The switching component 52 includes a switching ball 521, an L-shaped air outlet channel 522 is opened on the switching ball 521, the switching ball 521 is rotatably connected in the switching shell 513, a rotating horizontal axis 523 is fixedly connected to the switching ball 521, one end of the rotating horizontal axis 523 extends into the circulation treatment box 511 and is fixedly connected to a receiving plate 524, a plurality of receiving grooves 525 are opened in a circular array on the receiving plate 524, and a plurality of arc-shaped portions 526 are opened in a circular array on the receiving plate 524.

[0041] Specifically, when the driving plate 524 is rotated under force, the rotating horizontal axis 523 is driven to rotate, and the rotating horizontal axis 523 drives the switching ball 521 to rotate synchronously. As the switching ball 521 rotates, the outlet end of the air outlet channel 522 is driven to rotate, so that the air outlet channel 522 is first connected with the upper air outlet chamber 516, and after a period of time, it is connected with the lower air outlet chamber 517, and then connected with the upper air outlet chamber 516, so that the outlet end of the air outlet channel 522 is cyclically and alternately connected between the upper air outlet chamber 516 and the lower air outlet chamber 517.

[0042] Reference Figures 1-7 The driving component 53 includes a driving transverse shaft 531, which is rotatably connected to the circulation treatment box 511. A driving motor 532 is fixedly connected to the outer wall of the circulation treatment box 511. One end of the driving transverse shaft 531 passes through the box wall of the circulation treatment box 511 and is fixedly connected to the output end of the driving motor 532. The other end of the driving transverse shaft 531 is fixedly sleeved with a driving pulley 533. A connecting rod 534 is fixedly connected to the inner wall of the circulation treatment box 511. The connecting rod 5 A driven shaft 535 is rotatably connected to 34, one end of which is fixedly connected to a fan blade 536, a driven pulley 537 is fixedly sleeved on the driven shaft 535, and the driven pulley 537 is transmission-connected to the driving pulley 533 through a belt, a driving disc 538 is fixedly sleeved on the driving transverse axis 531, an arc-shaped avoidance portion 539 is provided on the driving disc 538, a toggle rod 5310 is fixedly connected to the driving disc 538, and the toggle rod 5310 is correspondingly provided to the bearing groove 525.

[0043] Specifically, the driving motor 532 drives the driving cross shaft 531 to rotate, the driving cross shaft 531 drives the driving disc 538 and the driving pulley 533 to rotate, the driving pulley 533 drives the belt to rotate the driven pulley 537, and the driven pulley 537 drives the driven shaft 535 to rotate the fan blade 536, so as to accelerate the air flow in the circulation processing box 511 through the rotation of the fan blade 536. At the same time, the driving disc 538 drives the toggle rod 5310 to rotate. When the toggle rod 5310 enters the receiving groove 525, it drives the receiving disc 524 to rotate once. After the receiving disc 524 is toggled, the outer arc surface of the driving disc 538 fits with the arc portion 526, and at this time, the receiving disc 524 stops rotating. The arc-shaped avoidance portion 539 is used to avoid the receiving disc 524 and prevent the receiving disc 524 from interfering with the rotation of the driving disc 538.

[0044] Embodiment 2:

[0045] Refer to Figures 1-7 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that air inlet hoods 6 are fixedly connected to both the inner top and bottom of the cold storage body 1. A plurality of air inlet holes 7 are evenly formed in the air inlet hood 6. Conical portions 8 are arranged at the centers of the inner sides of the air inlet hoods 6. The conical portion 8 located above is disposed opposite to the air outlet of the upper air outlet pipe 514, and the conical portion 8 located below is disposed opposite to the air outlet of the lower air outlet pipe 515.

[0046] Specifically, after the cold air from the upper air outlet pipe 514 or the lower air outlet pipe 515 enters the corresponding air inlet hood 6, the conical portion 8 disperses the incoming cold air around and then enters the cold storage body 1 through the air inlet holes 7 to contact the goods, thereby avoiding the cold air from concentrating and entering the cold storage body 1 to contact the goods, so that the cold air inside the cold storage body 1 contacts the goods more evenly.

[0047] Refer to Figures 1-8 , U-shaped slots 9 are fixedly connected to both the inner top and bottom of the circulation processing box 511. A filter screen plate 10 is arranged in the circulation processing box 511, and the upper and lower parts of the filter screen plate 10 are respectively slidably inserted into the two U-shaped slots 9; a cleaning brush 11 is arranged on one side of the filter screen plate 10 in the circulation processing box 511. A push-pull rod 12 is fixedly connected to the wall of the cleaning brush 11. The push-pull rod 12 is slidably connected through the circulation processing box 511. An electric cylinder 13 is fixedly connected to the top of the circulation processing box 511. One end of the push-pull rod 12 extends out of the circulation processing box 511 and is fixedly connected to the telescopic end of the electric cylinder 13; a collection port 14 is formed on one side of the bottom of the circulation processing box 511 corresponding to the filter screen plate 10. A collection hopper 15 is communicated with the bottom of the circulation processing box 511 corresponding to the collection port 14. A sealing cover 16 is screwed to the bottom end of the collection hopper 15.

[0048] Specifically, the air entering the circulation processing tank 511 is filtered by the filter screen plate 10, so that dust particles in the air can be filtered, thereby preventing the dust in the air from entering the cold storage body 1 again and causing pollution, improving the cleanliness of the air in the cold storage body 1. And the telescopic end of the electric cylinder 13 stretches and drives the push-pull rod 12 to move, and the push-pull rod 12 drives the cleaning brush 11 to move, so that the dust on the filter screen plate 10 can be brushed off by the cleaning brush 11, preventing the dust on the filter screen plate 10 from adhering too much after a long time and causing the mesh holes to be blocked and affecting the air circulation effect. And the dust brushed off by the cleaning brush 11 falls into the collection hopper 15 for collection, and finally the dust in the collection hopper 15 can be discharged by opening the blocking cover 16; the rest of the structure is the same as that of Embodiment 1.

[0049] Embodiment 3:

[0050] Refer to Figures 1-10 , which is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that: a box door 17 is provided on one side of the circulation processing tank 511. The bottom of the box door 17 is hinged to the bottom of the circulation processing tank 511 through a hinge. A connecting block 18 is fixedly connected to the top of the circulation processing tank 511. A connecting shaft 19 is rotatably connected to the connecting block 18. One end of the connecting shaft 19 is fixedly connected to a resisting rod 20. The resisting rod 20 abuts against one side of the box door 17. A torsion spring 21 is sleeved on the connecting shaft 19. One end of the torsion spring 21 is fixedly connected to the connecting block 18, and the other end of the torsion spring 21 is fixedly connected to the resisting rod 20; a plurality of ultraviolet germicidal lamps 22 are fixedly connected inside the circulation processing tank 511.

[0051] Specifically, by rotating the resisting rod 20 to drive the connecting shaft 19 to rotate, the torsion spring 21 generates elastic deformation, and the resisting rod 20 is adjusted from the vertical state to the horizontal state. At this time, the resisting rod 20 no longer resists the box door 17, and then the box door 17 is flipped along the hinge point to open the box door 17, so that the operator can perform maintenance on the inside of the circulation processing tank 511. And by pulling the filter screen plate 10 to pull it out of the U-shaped slot 9, the filter screen plate 10 can be conveniently replaced; the rest of the structure is the same as that of Embodiment 2.

[0052] Refer to Figures 1-10 , the working principle of the marine cold storage facilitating the internal gas circulation in the freezer of the present invention is as follows:

[0053] During use, place this cold storage on the ship, place the upper shelf inside the cold storage, place the goods to be stored in the cold storage on the shelf, start the refrigerating machine 4, and the refrigerating machine 4 controls the air temperature in the refrigerating box 3, so that the air temperature in the refrigerating box 3 meets the temperature required by the cold storage. Start the driving motor 532, drive the driving cross shaft 531 to rotate through the driving motor 532, and the driving cross shaft 531 drives the driving disc 538 and the driving pulley 533 to rotate. The driving pulley 533 rotates to drive the belt to make the driven pulley 537 rotate, and the driven pulley 537 drives the driven shaft 535 to make the fan blade 536 rotate, so as to pump the air in the refrigerating box 3 into the circulation treatment box 511. The cold air entering the circulation treatment box 511 is filtered through the filter screen plate 10, and then sterilized by the ultraviolet germicidal lamp 22. The cold air after filtration and sterilization treatment then enters the air outlet channel 522.

[0054] At the same time, the driving disc 538 rotates to drive the toggle rod 5310 to rotate synchronously. After the toggle rod 5310 enters one of the receiving slots 525, the toggle rod 5310 toggles the receiving disc 524 to rotate by an angle, and the receiving disc 524 rotates to drive the rotating cross shaft 523 to make the switching sphere 521 rotate synchronously. As the switching sphere 521 rotates, the outlet end of the air outlet channel 522 communicates with the upper air outlet chamber 516 every once in a while, and then communicates with the lower air outlet chamber 517 after a while, so that the outlet end of the air outlet channel 522 alternately communicates with the upper air outlet chamber 516 and the lower air outlet chamber 517.

[0055] When the air outlet channel 522 communicates with the upper air outlet chamber 516, the cold air after filtration and sterilization treatment enters the upper air outlet chamber 516, and then enters the upper air inlet hood 6 through the upper air outlet pipe 514. And when the cold air enters the air inlet hood 6 from the outlet end of the upper air outlet pipe 514, it is dispersed in all directions by the action of the conical part 8, so as to be dispersed in the air inlet hood 6, and finally enters the cold storage body 1 through the air inlet holes 7, so that the cold air enters the cold storage body 1 from the upper part of the cold storage body 1.

[0056] When the air outlet channel 522 communicates with the lower air outlet chamber 517, the cold air after filtration and sterilization treatment enters the lower air outlet chamber 517, and then enters the lower air inlet hood 6 through the lower air outlet pipe 515. And when the cold air enters the lower air inlet hood 6 from the outlet end of the lower air outlet pipe 515, it is dispersed in all directions by the action of the conical part 8, so as to be dispersed in the air inlet hood 6, and finally enters the cold storage body 1 through the air inlet holes 7, so that the cold air enters the cold storage body 1 from the lower part of the cold storage body 1.

[0057] When there is a lot of dust on one side of the filter screen plate 10 and needs to be cleaned, start the electric cylinder 13. The telescopic end of the electric cylinder 13 extends to drive the push-pull rod 12 to move. The push-pull rod 12 drives the cleaning brush 11 to move synchronously, so that the cleaning brush 11 contacts the side of the filter screen plate 10 with dust, so as to clean the dust on the filter screen plate 10 and prevent the filter screen plate 10 from being blocked by too much dust. The fallen dust falls into the collection hopper 15 through the collection port 14 for collection. When it is necessary to clean the dust in the collection hopper 15, unscrew the plugging cover 16 and remove it, so that the dust in the collection hopper 15 can be discharged from its bottom outlet, thus facilitating cleaning.

[0058] By rotating the resisting rod 20 to drive the connecting shaft 19 to rotate, the torsion spring 21 generates elastic deformation, and the resisting rod 20 is adjusted from the vertical state to the horizontal state. At this time, the resisting rod 20 no longer resists the cabinet door 17, and then flip the cabinet door 17 along the hinge point to open the cabinet door 17. Pull out the filter screen plate 10 from the U-shaped slot 9, so that the filter screen plate 10 can be taken out for replacement.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A marine cold storage for facilitating gas circulation inside a freezing chamber, comprising a cold storage body, a door being provided on one side of the cold storage body, a refrigeration box being provided on the side wall of the cold storage body and communicating with the interior thereof, a refrigerator being provided on the refrigeration box, and a refrigeration output end of the refrigerator being communicated with the interior of the refrigeration box, characterized in that: It also includes a circulation ventilation switching unit; The circulation ventilation switching unit includes a ventilation component, and the ventilation component is arranged on the cold storage body; The ventilation component is provided with a switching component; The switching component is provided with a driving component; The ventilation component includes a circulation treatment box, which is fixedly connected to the outer wall of the cold storage body, one side of the circulation treatment box is connected to an air inlet pipe, the other side of the circulation treatment box is connected to a switching shell, the upper part of the switching shell is connected to an upper air outlet pipe, the lower part of the switching shell is connected to a lower air outlet pipe, and an upper air outlet chamber and a lower air outlet chamber are arranged in the switching shell; The switching component includes a switching ball, an L-shaped air outlet passage is formed on the switching ball, the switching ball is rotatably connected in the switching housing, a rotating horizontal axis is fixedly connected to the switching ball, one end of the rotating horizontal axis is inserted into the circulation treatment box and then fixedly connected to a receiving plate, a plurality of receiving grooves are formed in a circumferential array on the receiving plate, and a plurality of arc-shaped portions are formed in a circumferential array on the receiving plate; The top and bottom of the inner side of the circulation treatment box are fixedly connected with U-shaped slots. A filter screen plate is arranged in the circulation treatment box. The upper and lower parts of the filter screen plate are slidably inserted into the two U-shaped slots respectively.

2. A marine cold storage for facilitating gas circulation in the freezing chamber according to claim 1, characterized in that: The driving component includes a driving transverse shaft, which is rotatably connected in a circulation treatment box, and a driving motor is fixedly connected to the outer wall of the circulation treatment box, one end of the driving transverse shaft passes through the box wall of the circulation treatment box and is fixedly connected to the output end of the driving motor, the other end of the driving transverse shaft is fixedly sleeved with a driving pulley, a connecting rod is fixedly connected to the box inner wall of the circulation treatment box, a driven shaft is rotatably connected to the connecting rod, one end of the driven shaft is fixedly connected with a fan blade, a driven pulley is fixedly sleeved on the driven shaft, and the driven pulley is connected to the driving pulley through a belt, a driving disk is fixedly sleeved on the driving transverse shaft, an arc-shaped avoidance portion is provided on the driving disk, a toggle rod is fixedly connected to the driving disk, and the toggle rod is corresponding to the toggle groove.

3. A marine cold storage for facilitating gas circulation in the freezing chamber according to claim 2, characterized in that: The inner top and bottom of the cold storage body are fixedly connected with an air intake hood, and a plurality of air intake holes are evenly opened on the air intake hood. A conical portion is arranged at the inner center of the air intake hood. The upper conical portion is arranged opposite to the air outlet of the upper air outlet duct, and the lower conical portion is arranged opposite to the air outlet of the lower air outlet duct.

4. A marine cold storage for facilitating gas circulation in the freezing chamber according to claim 3, characterized in that: A cleaning brush is provided on one side of the filter plate in the circulation treatment box, a push-pull rod is fixedly connected to the plate wall of the cleaning brush, the push-pull rod penetrates and is slidably connected to the circulation treatment box, an electric cylinder is fixedly connected to the top of the circulation treatment box, one end of the push-pull rod extends out of the circulation treatment box and is fixedly connected to the telescopic end of the electric cylinder.

5. A marine cold storage for facilitating gas circulation in the freezing chamber according to claim 4, characterized in that: A collecting port is provided at one side of the filter screen plate at the bottom of the circulation treatment box, and a collecting bucket is connected to the bottom of the circulation treatment box corresponding to the collecting port. A sealing cover is screwed on the bottom end of the collecting bucket.

6. A marine cold storage for facilitating gas circulation in a freezing chamber according to claim 1, characterized in that: A box door is provided on one side of the circulation treatment box, and the bottom of the box door is hinged to the bottom of the circulation treatment box by a hinge. A connecting block is fixedly connected to the top of the circulation treatment box, and a connecting shaft is rotatably connected to the connecting block. One end of the connecting shaft is fixedly connected to a resist rod, and the resist rod is abutted against one side of the box door. A torsion spring is sleeved on the connecting shaft, and one end of the torsion spring is fixedly connected to the connecting block, and the other end of the torsion spring is fixedly connected to the resist rod.

7. A marine cold storage for facilitating gas circulation in a freezing chamber according to claim 1, characterized in that: A plurality of ultraviolet sterilization lamps are fixedly connected in the circulation treatment box.

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