Air exchange device for cold stores

Abstract

The utility model discloses a kind of ventilation devices for cold store, belong to ventilation equipment technical field, the utility model includes cold store compartment, and ventilation tank is arranged on cold store compartment, and suction pipe is arranged on ventilation tank, and suction pipe is communicated with the inside of ventilation tank, two guide grooves are opened in suction pipe, and clamping groove is opened in the side wall of guide groove, dust filter screen is matched in suction pipe, the outer ring of dust filter screen is provided with two guide blocks, guide block is matched with guide groove, guide block is connected with clamping groove, annular groove is opened in suction pipe, and elastic member is arranged in annular groove, the bottom of dust filter screen is contacted with the top of elastic member, the utility model is structured by suction pipe, dust filter screen and elastic member, dust filter screen can be conveniently disassembled and maintained, and the problem that the disassembly operation of dust filter screen plate is more troublesome is solved.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment technology, specifically a ventilation device for cold storage. Background Technology

[0002] Cold storage is a method of preserving fresh produce by inhibiting the activity of microorganisms and enzymes, thus extending the shelf life of vegetables and fruits. Preservation storage can reduce the incidence of pathogens and the rate of fruit decay, and can also slow down the respiratory and metabolic processes of vegetables, thereby preventing spoilage and extending the storage period. To ensure air quality inside the cold storage, ventilation equipment is usually needed to circulate the air. Therefore, a Chinese utility model patent (publication number: CN221924147U) has been granted, proposing a ventilation device for cold storage, including a cold storage compartment, a ventilation box, an air intake pipe, an air intake pump, a filter condenser, a ventilation pipe, an external air intake pipe, a dust filter screen, a mounting plate, a ventilation filter screen, and a moving mechanism. The ventilation box is located at the top of the cold storage compartment. One end of the air intake pipe is connected to the right side of the cold storage compartment, one end of the air intake pump is connected to the other end of the air intake pipe, the top of the air intake pump is connected to the bottom of the external air intake pipe, and the left side of the air intake pump is connected to the filter condenser. This solution addresses the problems of existing cold storage ventilation systems, which often contain large quantities of fruits and vegetables that are stored for extended periods, resulting in polluted air and a pungent odor inside. These systems require ventilation, but the relatively high temperature of the air drawn in from the outside puts a strain on the internal temperature control and cannot effectively cool the incoming outside air, thus affecting their usability.

[0003] However, the dust filter plate used by this device to filter air dust and impurities is directly set on the top of the external air intake pipe and fixed by threaded posts. After the device has been working for a long time, when a lot of dust and impurities accumulate on the dust filter plate, it is difficult to replace and clean the dust filter plate. The disassembly and assembly operation is troublesome, time-consuming and laborious, and the disassembly and assembly speed is slow, which can easily affect the replacement and maintenance efficiency of the dust filter plate. Utility Model Content

[0004] The purpose of this utility model is to provide a ventilation device for cold storage. Through the structural design of the suction pipe, dust filter and elastic element, the dust filter can be easily disassembled and maintained, solving the problem that the disassembly and assembly of the dust filter plate is relatively troublesome.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model relates to a ventilation device for cold storage, comprising a cold storage compartment, a ventilation box mounted on the cold storage compartment, an air intake pipe mounted on the ventilation box, the air intake pipe communicating with the interior of the ventilation box, two guide grooves inside the air intake pipe, slots on the side walls of the guide grooves, a dust filter screen fitted inside the air intake pipe, two guide blocks on the outer ring of the dust filter screen, the guide blocks engaging with the guide grooves and the slots, an annular groove inside the air intake pipe, an elastic element mounted inside the annular groove, the bottom of the dust filter screen contacting the top of the elastic element.

[0007] Furthermore, a handle is provided at the top center of the dust filter.

[0008] Furthermore, the annular groove is located below the two guide grooves, which are connected to the annular groove. Four limiting grooves are provided inside the annular groove.

[0009] Furthermore, the elastic element includes a movable ring that mates with an annular groove. A support ring is provided on the movable ring, and the bottom end of the support ring contacts the bottom of the dust filter. Six compression springs are provided at the bottom of the movable ring, and damping pads are provided at the bottom ends of the compression springs. The bottom of the damping pads is connected to the bottom of the inner wall of the annular groove.

[0010] Furthermore, four limiting blocks are provided on the outer surface of the movable ring, and the limiting blocks cooperate with the limiting grooves.

[0011] Furthermore, the ventilation box is equipped with a ventilation filter, and ventilation pipes are installed on both sides of the cold storage compartment. The ventilation pipes are connected to the interior of the cold storage compartment, and one end of each ventilation pipe passes through the two side panels of the ventilation box, and the ventilation pipes are connected to the interior of the ventilation box.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model, through the structural design of the suction pipe, dust filter, and elastic element, allows for quick installation of the dust filter by rotating the handle clockwise, causing two guide blocks to engage with their corresponding slots. This facilitates convenient disassembly and maintenance of the dust filter, reduces the difficulty of disassembly and assembly, effectively shortens the disassembly and assembly time, and is simple to operate with concise steps, greatly improving the speed of dust filter disassembly and assembly and ensuring the efficiency of dust filter replacement and maintenance.

[0014] 2. This utility model, through the structural design of elastic components, utilizes the rebound force generated by the contraction of six compression springs to push the movable ring upwards and tightly abut against the bottom of the dust filter. This ensures that the two guide blocks on the dust filter are tightly engaged with the corresponding slots inside the suction pipe, thereby effectively improving the installation stability of the dust filter, ensuring that the dust filter can be firmly fixed to the inner ring of the suction pipe, and also improving the sealing between the dust filter and the suction pipe, thus guaranteeing the filtration effect of the dust filter.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the ventilation device.

[0017] Figure 2 This is a schematic diagram of the installation structure of the intake pipe, dust filter, and elastic component.

[0018] Figure 3 This is a schematic diagram of the inhalation tube.

[0019] Figure 4 This is a schematic diagram of the elastic element.

[0020] In the diagram: 1. Cold storage compartment; 2. Air exchange box; 3. Suction pipe; 301. Guide groove; 302. Card slot; 303. Annular groove; 304. Limiting groove; 4. Dust filter; 401. Guide block; 5. Elastic component; 501. Movable ring; 5011. Supporting ring; 502. Compression spring; 503. Limiting block; 6. Ventilation filter; 7. Air exchange pipe. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a ventilation device for cold storage, including a cold storage compartment 1, a ventilation box 2 installed on the cold storage compartment 1, an air intake pipe 3 installed on the ventilation box 2, the air intake pipe 3 communicating with the interior of the ventilation box 2, a ventilation filter screen 6 installed on the ventilation box 2, ventilation pipes 7 installed on both sides of the cold storage compartment 1, the ventilation pipes 7 communicating with the interior of the cold storage compartment 1, one end of each of the two ventilation pipes 7 passing through the side plates of the ventilation box 2, and the ventilation pipes 7 communicating with the interior of the ventilation box 2.

[0023] Two guide grooves 301 are provided inside the suction pipe 3. A slot 302 is provided on the side wall of the guide groove 301. A dust filter screen 4 is fitted inside the suction pipe 3. A torsion handle is provided at the top center of the dust filter screen 4 to facilitate the rotation of the dust filter screen 4. Two guide blocks 401 are provided on the outer ring of the dust filter screen 4. The guide blocks 401 cooperate with the guide grooves 301 and are engaged with the slots 302. An annular groove 303 is provided inside the suction pipe 3. An elastic element 5 is provided inside the annular groove 303. The bottom of the dust filter screen 4 contacts the top of the elastic element 5.

[0024] When installing the cleaned dust filter 4, place it directly above the suction pipe 3, aligning the two guide blocks 401 on the dust filter 4 with the two guide grooves 301 on the inner ring of the suction pipe 3. Then, using the cooperation of the guide blocks 401 and the guide grooves 301, slide the dust filter 4 into the suction pipe 3, causing the bottom of the dust filter 4 to press against the support ring 5011. The cooperation of the limiting block 503 and the limiting groove 304 causes the support ring 5011 to push the movable ring 501. The dust filter 4 slides downwards into the annular groove 303, causing it to slide into the suction pipe 3 until the two guide blocks 401 on the dust filter 4 are aligned with the two slots 302 in the suction pipe 3. Then, the dust filter 4 is rotated clockwise by the handle, causing the two guide blocks 401 to engage with the corresponding slots 302, thus achieving quick installation of the dust filter 4. Similarly, when it is necessary to disassemble the dust filter 4, the above operation is repeated in reverse order to achieve convenient disassembly of the dust filter 4.

[0025] The annular groove 303 is located below the two guide grooves 301, which are connected to the annular groove 303. Four limiting grooves 304 are provided within the annular groove 303. The elastic element 5 includes a movable ring 501, which engages with the annular groove 303. A support ring 5011 is provided on the movable ring 501 to facilitate compression of the movable ring 501 by the dust filter 4. The bottom end of the support ring 5011 contacts the bottom of the dust filter 4. Six compression springs 502 are provided at the bottom of the movable ring 501, with damping pads at their bottom ends to ensure the stability of the compression springs' contraction and rebound. The bottom of the damping pads connects to the bottom of the inner wall of the annular groove 303. Four limiting blocks 503 are provided on the outer surface of the movable ring 501, engaging with the limiting grooves 304 to restrict the position of the movable ring 501 and improve its stability during vertical movement within the annular groove 303.

[0026] During the process of installing the dust filter 4 into the suction pipe 3, the dust filter 4 presses against the support ring 5011, causing the movable ring 501 to slide downward in the annular groove 303. As the movable ring 501 moves downward, the six compression springs 502 at the bottom of the movable ring 501 are compressed and contract. The rebound force generated by the contraction of the six compression springs 502 causes the movable ring 501 to push the support ring 5011 upward and tightly abut against the bottom of the dust filter 4, so that the two guide blocks 401 on the dust filter 4 are tightly engaged with the corresponding slots 302 in the suction pipe 3.

[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A ventilation device for cold storage, comprising a cold storage compartment (1), characterized in that: The cold storage compartment (1) is equipped with an air exchange box (2), and the air exchange box (2) is equipped with an air suction pipe (3), which is connected to the interior of the air exchange box (2). The suction pipe (3) has two guide grooves (301) and a slot (302) on the side wall of the guide groove (301). A dust filter (4) is fitted inside the suction pipe (3). Two guide blocks (401) are provided on the outer ring of the dust filter (4). The guide blocks (401) cooperate with the guide groove (301) and are engaged with the slot (302). An annular groove (303) is provided inside the suction pipe (3). An elastic element (5) is provided inside the annular groove (303). The bottom of the dust filter (4) is in contact with the top of the elastic element (5).

2. The ventilation device for cold storage according to claim 1, characterized in that, A torsion handle is provided at the top center of the dust filter (4).

3. A ventilation device for cold storage according to any one of claims 1-2, characterized in that, The annular groove (303) is located below the two guide grooves (301), and the two guide grooves (301) are connected to the annular groove (303). Four limiting grooves (304) are provided in the annular groove (303).

4. A ventilation device for cold storage according to claim 3, characterized in that, The elastic element (5) includes a movable ring (501) that engages with an annular groove (303). A support ring (5011) is provided on the movable ring (501). The bottom end of the support ring (5011) contacts the bottom of the dust filter (4). Six compression springs (502) are provided at the bottom of the movable ring (501). A damping pad is provided at the bottom end of the compression spring (502). The bottom of the damping pad is connected to the bottom of the inner wall of the annular groove (303).

5. A ventilation device for cold storage according to claim 4, characterized in that, The outer surface of the movable ring (501) is provided with four limiting blocks (503), which cooperate with the limiting groove (304).

6. A ventilation device for cold storage according to claim 1, characterized in that, The ventilation box (2) is equipped with a ventilation filter (6), and ventilation pipes (7) are provided on both sides of the cold storage compartment (1). The ventilation pipes (7) are connected to the interior of the cold storage compartment (1). One end of each of the two ventilation pipes (7) passes through the two side plates of the ventilation box (2), and the ventilation pipes (7) are connected to the interior of the ventilation box (2).

Images