Telescopic differential pressure precooling device in refrigeration house

Abstract

The utility model relates to the technical field of differential pressure precooling, and particularly discloses a telescopic differential pressure precooling device in a refrigeration house, which comprises a refrigeration house insulation box, a protective shutter is fixedly mounted on the outer surface of one end of the refrigeration house insulation box, and a box door is rotatably mounted on the outer surface of one end of the refrigeration house insulation box far away from the protective shutter. And a breathable negative pressure box is fixedly mounted in the cold storage heat preservation box. According to the telescopic differential pressure pre-cooling device in the refrigeration storage, the placing frame for placing articles is pushed into the heat preservation box of the refrigeration storage, and the canvas roll can be opened by loosening the binding belts from the binding hooks, so that the canvas roll can cover the upper part and the front side of the placing frame; the canvas roll can be placed on the placement frame, then the articles on the placement frame can be pre-cooled by starting the air cooler module and the differential pressure fan, the canvas roll can be rolled and stored after use, the canvas roll is stored and fixed through binding of a binding belt and a binding hook, the canvas roll can be conveniently stored and used, and meanwhile use of the cold storage heat preservation box cannot be affected.

Description

Technical Field

[0001] This utility model relates to the field of differential pressure precooling technology, specifically to a retractable differential pressure precooling device for cold storage. Background Technology

[0002] Differential pressure precooling devices are equipment used for food preservation and cooling. They utilize pressure difference to lower the temperature of food, thereby extending its shelf life and maintaining its quality. The food to be cooled is placed in a sealed container, with a low-pressure environment at one end and a high-pressure environment at the other. The pressure difference allows heat to flow from the high-pressure end to the low-pressure end, thus quickly removing heat from the food and achieving cooling. However, traditional differential pressure precooling warehouses are all fixed, resulting in low space utilization, and they can only be used to cool food, not for freezing or storing items. Utility Model Content

[0003] The purpose of this invention is to provide a retractable differential pressure precooling device for cold storage, so as to solve the problem that differential pressure precooling warehouses mentioned in the background are all fixed and inconvenient to store.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a retractable differential pressure precooling device for cold storage, comprising a cold storage insulation box, a protective louver fixedly installed on the outer surface of one end of the cold storage insulation box, and a cold air fan module fixedly installed between the inner side of the protective louver and the cold storage insulation box; a box door rotatably installed on the outer surface of the end of the cold storage insulation box away from the protective louver, and the box door engaging with the cold storage insulation box; a ventilated negative pressure box fixedly installed inside the cold storage insulation box, and a fixing strip fixedly installed on the side surface of the ventilated negative pressure box; a canvas roll evenly rolled on the side surface of the ventilated negative pressure box, and a storage and shielding separation mechanism provided between the canvas roll and the ventilated negative pressure box, which allows the box to be opened when needed and rolled up and stored when not in use.

[0005] Preferably, the storage and shielding separation mechanism includes: a strap, which is fixedly sewn onto the outer surface of the canvas roll, and the outer surface of the canvas roll is in contact with the cooling item placement rack; hooks are evenly fixedly installed on the outer surface of the fixing strip, and the outer surface of the hooks is in contact with the outer surface of the strap; and through holes are evenly opened on the outer surface of the ventilated negative pressure box, and the through holes on the outer surface of the ventilated negative pressure box are in contact with the outer surface of the canvas roll.

[0006] Using the above technical solution, when pre-cooling food by differential pressure, it is only necessary to attach the food rack to the outer surface of the ventilated negative pressure box, and then open the canvas roll to cover the food rack. Other canvas rolls can be used to cover any remaining openings on the outer surface of the ventilated negative pressure box. This allows the canvas rolls to be opened and used for covering during differential pressure pre-cooling of food. After the food pre-cooling is complete, the canvas rolls can be rolled up and secured with straps and hooks to fix and store the canvas rolls. The canvas rolls can be released for use when needed and stored away when not in use, without affecting the use of the cold storage.

[0007] Preferably, differential pressure fans are evenly installed on the outer surface of the ventilated negative pressure box, and the differential pressure fans are located below the air outlet of the air cooler module.

[0008] By adopting the above technical solution, the air inside the cold storage insulation box can be drawn into the interior of the ventilated negative pressure box by setting up the differential pressure fan, and then sent into the interior of the air cooler module. After being cooled by the air cooler module, the low-temperature air is discharged, so that the air can circulate in the cold storage insulation box and maintain the temperature inside the cold storage insulation box.

[0009] Preferably, a plug-in fixing mechanism is provided between the breathable negative pressure box and the fixing strip to fix the canvas roll, which facilitates the replacement of the canvas roll.

[0010] By adopting the above technical solution, the canvas roll can be easily replaced without removing a large number of fixing screws, thus improving the convenience of replacing the canvas roll after it is damaged.

[0011] Preferably, the insertion and fixing mechanism includes: a snap-fit ​​bracket, the outer surface of which is inserted into one end of the canvas roll, and the outer surface of the canvas roll is in contact with the outer surface of the fixing strip; the outer surface of the ventilated negative pressure box is threaded with bolts, and the bolts on the outer surface of the ventilated negative pressure box are in contact with the outer surface of the snap-fit ​​bracket.

[0012] Using the above technical solution, when replacing the canvas roll, simply remove the snap-fit ​​bracket and pull out multiple canvas rolls. Then, remove the canvas roll that needs to be replaced and replace it with a new one. After that, insert the snap-fit ​​bracket back in and tighten the bolts to replace the damaged canvas roll. This eliminates the need to replace the entire canvas roll, saving the area required for canvas roll replacement and reducing usage costs.

[0013] Preferably, a baffle is rotatably installed on the outer surface of the cold storage insulation box near the door, a retaining bead is fixedly installed on the outer surface of the cold storage insulation box, and the outer surface of the retaining bead engages with the outer surface of the baffle, and a ramp moving plate is rotatably installed on the outer surface of the cold storage insulation box near the door, and the outer surface of the ramp moving plate is in contact with the outer surface of the baffle.

[0014] By adopting the above technical solution, the height difference between the cold storage insulated box and the ground can be eliminated by setting up a ramp moving plate, which makes it convenient to push the placement rack for placing items into the interior of the cold storage insulated box. At the same time, after the placement is completed, the ramp moving plate can be retracted and the box door can be closed. By pulling down the baffle, the baffle can be disengaged from the locking ball. The baffle restricts the position of the ramp moving plate, reducing the risk of workers being injured by the ramp moving plate when opening the box door.

[0015] Preferably, rods are uniformly fixedly installed on the outer surface of the canvas roll, a first weight-adding bracket is rotatably installed at one end of the canvas roll, a second weight-adding bracket is rotatably installed on the outer surface of one end of the other canvas roll, and the second weight-adding bracket is threadedly connected to the baffle. Velcro is provided between the canvas rolls.

[0016] By adopting the above technical solution, the first and second weight-bearing supports allow the canvas roll to be quickly opened by gravity during use, reducing the chance of the canvas roll being blown away by the wind during the cooling process. The canvas rolls can be connected together by the threaded connection of the first and second weight-bearing supports, and the Velcro on the outer surface of the canvas rolls eliminates the gaps between the connections, making it convenient to use when cooling a large number of items. The rods support the outer surface of the rods, preventing air from being sucked into the shelf by negative pressure when air circulates. The first and second weight-bearing supports also make it easy to roll up the canvas rolls for storage.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the expandable differential pressure precooling device in the cold storage:

[0018] 1. When items need to be cooled, simply push the shelf into the cold storage box, then loosen the straps from the hooks to open the canvas roll. The canvas roll can then be laid out to cover the top and front of the shelf. The canvas roll, which does not cover the shelf, will block the openings on the outer surface of the ventilated negative pressure box. After that, by starting the cold air module and the differential pressure fan, the air inside the cold storage box can pass directly through the sides of the shelf and into the ventilated negative pressure box to pre-cool the items on the shelf. After use, the canvas roll can be rolled up and stored, secured with straps and hooks. When items need to be pre-cooled, simply release the canvas roll for pre-cooling. When not in use, storing the canvas roll eliminates space occupation, making it convenient for storage and use without affecting the use of the cold storage box.

[0019] 2. When the canvas roll is worn or damaged, the pre-cooled air covering the canvas roll will enter through the worn area instead of passing through the sides of the placement frame. In this case, the damaged canvas roll needs to be replaced. Remove the bolts on the outer surface of the ventilated negative pressure box to remove the clip bracket from the fixing strip. Then, remove the canvas rolls one by one and replace the damaged ones. After that, put the clip bracket containing the canvas roll back into the fixing strip and tighten the bolts on the outer surface of the ventilated negative pressure box to install the canvas roll. This eliminates the need to replace an entire canvas roll, reducing the cost of use, and also reduces the cumbersomeness of installation and disassembly by eliminating the need to remove a large number of screws.

[0020] 3. The first and second weight-bearing supports allow the canvas roll to be opened quickly using their own weight. When storing the canvas roll, the first and second weight-bearing supports provide better support, making it easier to roll up. When pre-cooling a large number of items, simply screw the first and second weight-bearing supports together to assemble the canvas rolls. The Velcro fasteners between the canvas rolls eliminate gaps, facilitating quick opening and storage. Assembling the canvas rolls together also allows for convenient pre-cooling of large quantities of items. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the cold storage insulated box and protective louvers of this utility model;

[0022] Figure 2 This is a cross-sectional perspective view of the three-dimensional structure of the cold storage insulation box and the ventilated negative pressure box of this utility model;

[0023] Figure 3 This is an exploded three-dimensional structural diagram of the fixing strip and the clip frame of this utility model;

[0024] Figure 4 This is a cross-sectional three-dimensional structural diagram of the cold storage insulated box and the inclined moving plate of this utility model;

[0025] Figure 5 This is a cross-sectional three-dimensional structural diagram of the baffle and the retaining bead of this utility model;

[0026] Figure 6 This is an exploded three-dimensional structural diagram of the canvas roll and rod of this utility model.

[0027] In the diagram: 1. Cold storage insulated box; 2. Box door; 3. Protective louvers; 4. Ventilation negative pressure box; 5. Cold air blower module; 6. Differential pressure fan; 7. Sloping moving plate; 8. Fixing strip; 9. Binding hook; 10. Clip frame; 11. Canvas roll; 12. Rod; 13. Binding strap; 14. Baffle; 15. Clamping bead; 16. First weight-bearing bracket; 17. Second weight-bearing bracket. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-6 This utility model provides a technical solution: a retractable differential pressure precooling device for cold storage, including a cold storage insulation box 1, a protective louver 3 fixedly installed on the outer surface of one end of the cold storage insulation box 1, and a cold air fan module 5 fixedly installed between the inner side of the protective louver 3 and the cold storage insulation box 1, a box door 2 rotatably installed on the outer surface of the end of the cold storage insulation box 1 away from the protective louver 3, and the box door 2 engaging with the cold storage insulation box 1, and a ventilated negative pressure box 4 fixedly installed inside the cold storage insulation box 1, and a fixing strip 8 fixedly installed on the side surface of the ventilated negative pressure box 4.

[0030] The protective louvers 3 can protect and secure the air cooler module 5 installed between the cold storage insulation box 1 and the protective louvers 3, reducing the chance of external rainwater and debris entering and causing damage to the air cooler module 5.

[0031] A canvas roll 11 is evenly rolled up on the side surface of the ventilated negative pressure box 4, and a storage and shielding separation mechanism is provided between the canvas roll 11 and the ventilated negative pressure box 4. The storage and shielding separation mechanism allows the box to be opened when needed and rolled up for storage when not in use. The storage and shielding separation mechanism includes: a strap 13, which is fixedly sewn to the outer surface of the canvas roll 11, and the outer surface of the canvas roll 11 is in contact with the cooling item placement rack; hooks 9 are evenly fixedly installed on the outer surface of the fixing strip 8, and the outer surface of the hooks 9 is in contact with the outer surface of the strap 13; and through holes are evenly opened on the outer surface of the ventilated negative pressure box 4, and the through holes on the outer surface of the ventilated negative pressure box 4 are in contact with the outer surface of the canvas roll 11.

[0032] When needed, simply push the shelf containing the items into the cold storage box 1, then loosen the straps 13 and unfold the canvas rolls 11 one by one. Use the canvas rolls 11 to cover and shield the shelf, and use the excess canvas rolls 11 that are not covering the shelf to block the openings on the outer surface of the ventilated negative pressure box 4, allowing air to pass through the shelf more quickly to cool the items placed on it. After use, simply roll up the canvas rolls 11 and secure them with the straps 13 and hooks 9 to hang and store them. This allows the canvas rolls 11 to be released when items need pre-cooling and stored away when not in use, making storage and use convenient and not affecting the operation of the cold storage box 1.

[0033] Differential pressure fans 6 are evenly installed on the outer surface of the ventilated negative pressure box 4, and the differential pressure fans 6 are located below the air outlet of the air cooler module 5.

[0034] By rotating the differential pressure fan 6, the air inside the cold storage insulation box 1 can be drawn into the ventilated negative pressure box 4 and discharged into the cold air module 5 for heat exchange before being discharged again, so that the air can circulate inside the cold storage insulation box 1 and maintain the temperature inside the cold storage insulation box 1.

[0035] A plug-in fixing mechanism is provided between the ventilated negative pressure box 4 and the fixing strip 8. The canvas roll 11 is fixed by the plug-in fixing mechanism, which facilitates the replacement of the canvas roll 11. The plug-in fixing mechanism includes: a snap-fit ​​bracket 10, the outer surface of the snap-fit ​​bracket 10 is plugged into one end of the canvas roll 11, and the outer surface of the canvas roll 11 is attached to the outer surface of the fixing strip 8. The outer surface of the ventilated negative pressure box 4 is threaded with bolts, and the bolts on the outer surface of the ventilated negative pressure box 4 are attached to the outer surface of the snap-fit ​​bracket 10.

[0036] When a single canvas roll 11 is damaged or worn, simply remove the bolts on the outer surface of the ventilated negative pressure box 4 to disengage the snap-fit ​​bracket 10 from the fixing strip 8. Then, the snap-fit ​​bracket 10 can be removed, and the canvas roll 11 that needs to be replaced can be removed and replaced with a new canvas roll 11. After that, the snap-fit ​​bracket 10 can be inserted back into the fixing strip 8, and the bolts on the outer surface of the ventilated negative pressure box 4 can be tightened to fix the snap-fit ​​bracket 10 inside the fixing strip 8. This makes it convenient to replace the damaged canvas roll 11 without having to replace the entire canvas roll 11, reducing the cost of use and reducing the tediousness of disassembly by eliminating the need to remove a large number of bolts and screws.

[0037] A baffle plate 14 is rotatably installed on the outer surface of the cold storage insulation box 1 near the door 2. A retaining bead 15 is fixedly installed on the outer surface of the cold storage insulation box 1, and the outer surface of the retaining bead 15 engages with the outer surface of the baffle plate 14. A ramp moving plate 7 is rotatably installed on the outer surface of the cold storage insulation box 1 near the door 2, and the outer surface of the ramp moving plate 7 is in contact with the outer surface of the baffle plate 14.

[0038] When the rack needs to be pushed into the cold storage insulated box 1, simply lower the ramp moving plate 7 to eliminate the height difference between the cold storage insulated box 1 and the ground, allowing the rack to be easily pushed into the cold storage insulated box 1. The locking ball 15 can limit the baffle 14, preventing it from tipping over due to vibration or other reasons when it is upright, thus reducing the risk of staff colliding with the rack. After the rack is pushed in, the ramp moving plate 7 can be flipped and the baffle 14 pushed, allowing the baffle 14 to limit the ramp moving plate 7, preventing it from opening accidentally and reducing the risk of the ramp moving plate 7 falling down with the box door 2 and injuring staff.

[0039] Rods 12 are evenly fixedly installed on the outer surface of the canvas roll 11. A first weight-adding bracket 16 is rotatably installed on one end of the canvas roll 11, and a second weight-adding bracket 17 is rotatably installed on the outer surface of one end of the other canvas roll 11. The second weight-adding bracket 17 is threadedly connected to the baffle 14, and Velcro is provided between the canvas rolls 11.

[0040] The rod 12 supports the canvas roll 11, improving its stability when negative pressure air passes through and reducing the chance of it being sucked into the shelf. The first weight-adding bracket 16 and the second weight-adding bracket 17 allow the canvas roll 11 to be opened quickly and easily, reducing the chance of it moving around due to the air passing through. When connecting the two components, the first weight-adding bracket 16 and the second weight-adding bracket 17 can be screwed together to connect the canvas roll 11 into a whole. The gaps at the connection points can be eliminated with Velcro, making it suitable for cooling large quantities of items. The first weight-adding bracket 16 and the second weight-adding bracket 17 also provide support when storing the canvas roll 11, making it easier to roll up.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A retractable differential pressure precooling device for cold storage, comprising a cold storage insulation box (1), wherein a protective louver (3) is fixedly installed on the outer surface of one end of the cold storage insulation box (1), and a cold air blower module (5) is fixedly installed between the inner side of the protective louver (3) and the cold storage insulation box (1), and a box door (2) is rotatably installed on the outer surface of the end of the cold storage insulation box (1) away from the protective louver (3), and the box door (2) engages with the cold storage insulation box (1), characterized in that: The inside of the cold storage insulation box (1) is fixedly provided with a breathable negative pressure box (4), and the side surface of the breathable negative pressure box (4) is fixedly provided with a fixed clamping strip (8); the side surface of the breathable negative pressure box (4) is uniformly wound with a canvas roll (11), and a storage shielding separation mechanism is arranged between the canvas roll (11) and the breathable negative pressure box (4); the storage shielding separation mechanism can be opened when needed and can be wound and stored when not in use.

2. The retractable pressure difference pre-cooling device in a cold storage according to claim 1, characterized in that: The storage shielding separation mechanism comprises a binding belt (13) which is fixedly sewn on the outer surface of the canvas roll (11), and the outer surface of the canvas roll (11) is attached to the placing rack of the cooling object; the outer surface of the fixed clamping strip (8) is uniformly fixedly provided with a binding hook (9), and the outer surface of the binding hook (9) is attached to the outer surface of the binding belt (13); the outer surface of the breathable negative pressure box (4) is uniformly provided with a through hole, and the through hole of the outer surface of the breathable negative pressure box (4) is attached to the outer surface of the canvas roll (11).

3. The retractable pressure difference pre-cooling device in a cold storage according to claim 1, characterized in that: The outer surface of the breathable negative pressure box (4) is uniformly provided with a differential pressure fan (6), and the differential pressure fan (6) is located below the air outlet end of the cold air fan module (5).

4. The retractable pressure difference pre-cooling device in a cold storage according to claim 1, characterized in that: A plug-in fixing mechanism is arranged between the breathable negative pressure box (4) and the fixed clamping strip (8), and the plug-in fixing mechanism is used for fixing the canvas roll (11) and facilitating replacement of the canvas roll (11).

5. The retractable pressure difference pre-cooling device in a cold storage according to claim 4, characterized in that: The plug-in fixing mechanism comprises a clamping frame (10), the outer surface of the clamping frame (10) is inserted into one end of the canvas roll (11), and the outer surface of the canvas roll (11) is attached to the outer surface of the fixed clamping strip (8); the outer surface of the breathable negative pressure box (4) is threadedly provided with a bolt, and the bolt of the outer surface of the breathable negative pressure box (4) is attached to the outer surface of the clamping frame (10).

6. The retractable pressure difference pre-cooling device in a cold storage according to claim 1, characterized in that: The outer surface of one end of the cold storage insulation box (1) near the box door (2) is rotatably provided with a baffle (14), the outer surface of the cold storage insulation box (1) is fixedly provided with a clamping bead (15), and the outer surface of the clamping bead (15) is clamped with the outer surface of the baffle (14); the outer surface of one end of the cold storage insulation box (1) near the box door (2) is rotatably provided with a slope moving plate (7), and the outer surface of the slope moving plate (7) is attached to the outer surface of the baffle (14).

7. The retractable pressure difference pre-cooling device in a cold storage according to claim 5, characterized in that: The outer surface of the canvas roll (11) is uniformly fixedly provided with a rod (12), one end of the canvas roll (11) is rotatably provided with a first weight increasing support (16), and the other end of the canvas roll (11) is rotatably provided with a second weight increasing support (17); the second weight increasing support (17) is threadedly connected with the baffle (14), and the canvas roll (11) is provided with a magic tape.

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