Refrigerator air duct capable of preventing solid particles from being accumulated

Abstract

The refrigerator air duct capable of preventing the solid particles from being accumulated comprises an inner side plate, an air duct body is installed on the rear wall of the inner side plate, an air duct opening communicated with the air duct body is formed in the inner side plate, a filter screen is embedded in the air duct opening, the upper end of the air duct body is fixedly connected with a fixing pipe, and the upper end of the air duct body is fixedly connected with the fixing pipe. A cleaning mechanism used for cleaning the filter screen is arranged in the fixing pipe, the cleaning mechanism comprises two symmetrically arranged sliding rods which are connected to the upper end of the fixing pipe in a penetrating and sliding mode, and the upper ends of the two sliding rods are jointly and fixedly connected with a moving block. The cleaning mechanism is reasonable in structure, when the filter screen is blocked, the movable plate drives the cleaning scraper to scrape the surface of the filter screen, so that the filter screen is cleaned, normal air inlet of the air duct body is prevented from being affected after blockage, the cleaning mechanism can automatically complete cleaning work, timely cleaning is achieved after blockage, and the cleaning efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerator air ducts, and in particular to a refrigerator air duct capable of preventing solid particles from piling up. Background Art

[0002] The air duct cover structure of the refrigerator is mainly used to introduce cold air from the evaporator into the air duct, and blow it to various parts of the refrigerator body receiving cavity from the air outlet of the air duct, thereby lowering the temperature of the refrigerator receiving cavity and refrigerating the stored items in the receiving cavity.

[0003] Generally, the air duct opening is connected to the inside of the refrigerator. In order to prevent impurities from entering the air duct opening, a filter needs to be installed. However, during the use of the refrigerator, food residues are easily left in the refrigerator. After long-term use, the filter at the air duct opening is easily blocked by food residues. When impurities accumulate in the air duct opening, the air intake effect of the air duct will be poor, thereby affecting the preservation or refrigeration effect of the refrigerator. To this end, the present application proposes a refrigerator air duct that prevents solid particles from accumulating to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose a refrigerator air duct that prevents the accumulation of solid particles. By arranging a cleaning mechanism and a driving mechanism, when the filter is clogged, the moving plate drives the cleaning scraper to scrape the surface of the filter to clean the filter, thereby avoiding affecting the normal air intake of the air duct main body after being clogged.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A refrigerator air duct for preventing solid particles from accumulating, comprises an inner plate, a duct main body is installed on the rear wall of the inner plate, an air duct opening connected to the air duct main body is opened on the inner plate, a filter is embedded in the air duct opening, the upper end of the air duct main body is fixedly connected to a fixed tube, a cleaning mechanism for cleaning the filter is arranged in the fixed tube, the cleaning mechanism comprises two symmetrically arranged sliding rods which penetrate and slide through the upper end of the fixed tube, a moving block is fixedly connected to the upper ends of the two sliding rods, two symmetrically arranged L-shaped rods are fixedly connected to the side walls of the moving block, a moving plate is fixedly connected to the lower ends of the two L-shaped rods, a cleaning scraper is installed at one end of the moving plate close to the inner plate, and a driving mechanism for driving the cleaning mechanism is arranged in the fixed tube.

[0007] Preferably, the driving mechanism comprises a piston plate sealingly and slidably connected in the fixed tube, and the upper end of the piston plate is fixedly connected to the lower ends of the two sliding rods.

[0008] Preferably, the fixed tube is connected to the air duct body via a through groove, and a through hole is provided on a side wall at one end of the fixed tube.

[0009] Preferably, a discharge pipe is fixedly connected to the side wall of the fixed pipe, and the discharge pipe is communicated with the through hole.

[0010] Preferably, the lower end of the moving block is elastically connected to the upper end of the fixed tube via two symmetrically arranged springs, and the two springs are respectively sleeved on two sliding rods.

[0011] Preferably, a booster nozzle is installed at one end of the discharge pipe away from the fixed pipe, and the booster nozzle is located on one side of the filter screen and cooperates with it.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. By setting up a cleaning mechanism and a driving mechanism, when the filter is blocked, the air intake of the air duct body is blocked, and the gas enters the fixed tube through the through groove, pushing the piston plate upward, prompting the sliding rod, the moving block and the L-shaped rod to move, so that the moving plate drives the cleaning scraper to scrape the surface of the filter, thereby cleaning the filter and avoiding affecting the normal air intake of the air duct body after being blocked.

[0014] 2. By setting up the discharge pipe and the booster nozzle, when the piston plate moves up to the top of the through hole, the gas enters the discharge pipe through the through hole and is discharged to the surface of the filter by the booster nozzle, so as to blow away the scraped impurities, improve the cleaning effect, and avoid the accumulation of impurities near the air duct opening, causing blockage again. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a refrigerator air duct for preventing solid particle accumulation proposed by the utility model;

[0016] Figure 2 This is a rear perspective view of a refrigerator air duct for preventing solid particle accumulation proposed by the utility model;

[0017] Figure 3 The utility model is a cross-sectional view of a refrigerator air duct for preventing solid particle accumulation.

[0018] In the figure: 1 inner plate, 2 movable plate, 3 air duct opening, 4 L-shaped rod, 5 movable block, 6 spring, 7 cleaning scraper, 8 discharge pipe, 9 filter, 10 through groove, 11 through hole, 12 sliding rod, 13 piston plate, 14 air duct body. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0020] Reference Figure 1-3 A refrigerator air duct for preventing solid particles from accumulating comprises an inner panel 1, a duct body 14 is mounted on the rear wall of the inner panel 1, an air duct opening 3 communicating with the air duct body 14 is opened on the inner panel 1, a filter screen 9 is embedded in the air duct opening 3, a fixed pipe is fixedly connected to the upper end of the air duct body 14, and the inner panel 1 is an inner lining plate inside the refrigerator.

[0021] A cleaning mechanism for cleaning the filter 9 is provided in the fixed tube, and the cleaning mechanism includes two symmetrically arranged sliding rods 12 that penetrate and slide through the upper end of the fixed tube, and the upper ends of the two sliding rods 12 are fixedly connected with a moving block 5 together, and two symmetrically arranged L-shaped rods 4 are fixedly connected to the side wall of the moving block 5, and the lower ends of the two L-shaped rods 4 are fixedly connected with a moving plate 2 together, and a cleaning scraper 7 is installed at one end of the moving plate 2 close to the inner plate 1. The material of the cleaning scraper 7 at the end in contact with the filter 9 is sponge, and the surface of the sponge material is rough. When scraping, impurities on the filter 9 can be scraped off, and the cleaning effect is better. The lower end of the moving block 5 is elastically connected to the upper end of the fixed tube by two symmetrically arranged springs 6, and the two springs 6 are respectively mounted on the two sliding rods 12. The setting of the spring 6 helps the moving block 5 to quickly reset, and the cleaning scraper 7 can be connected to the moving plate 2 by bolts or snaps, and can be quickly replaced after wear.

[0022] A driving mechanism for driving the cleaning mechanism is arranged in the fixed tube, and the driving mechanism includes a piston plate 13 which is sealingly and slidingly connected in the fixed tube, and the upper end of the piston plate 13 is fixedly connected to the lower ends of the two sliding rods 12, and a sealing sleeve is sleeved on the piston plate 13, and the outer wall of the sealing sleeve is in contact with the inner wall of the fixed tube to achieve a sealing effect.

[0023] The fixed pipe is connected to the air duct body 14 through a through groove 10. A through hole 11 is provided on the side wall of one end of the fixed pipe. A discharge pipe 8 is fixedly connected to the side wall of the fixed pipe. The discharge pipe 8 is connected to the through hole 11. A booster nozzle is installed at one end of the discharge pipe away from the fixed pipe. The booster nozzle is located on one side of the filter screen 9 and cooperates with it. Figure 3As shown, in the initial state, the piston plate 13 is located below the through hole 11, and the booster nozzle is an existing common booster component, and its function is to increase the pressure of the fluid passing through. It is set here, and the gas is ejected by the booster nozzle. The gas pressure increases and blows to the surface of the filter 9, which can achieve a better cleaning effect.

[0024] When the utility model is used, gas enters from the air duct body 14 and is discharged into the refrigerator through the air duct opening 3. When the filter screen 9 is blocked, the air duct body 14 continues to take in air, and the gas cannot be discharged from the air duct opening 3. The air pressure in the air duct body 14 increases, pushing the piston plate 13 to move upward, thereby driving the sliding rod 12 and the moving block 5 to move upward. The movement of the moving block 5 drives the L-shaped plate 4, the moving plate 2 and the cleaning scraper 7 to move. The cleaning scraper 7 wipes the surface of the filter screen 9 to scrape off the impurities adsorbed on the surface of the filter screen 9, thereby avoiding the filter screen from being blocked. The mesh 9 is blocked. During this process, when the piston plate 13 moves to above the through hole 11, the gas enters the discharge pipe 8 through the through hole 11, and is blown to the surface of the filter 9 by adding a nozzle to blow away the scraped impurities to avoid impurities accumulating and causing blockage again. When the filter 9 is unblocked, the air pressure in the air duct body 14 decreases. Under the action of the spring 6, the moving block 5 moves downward, driving the piston plate 13 to reset. The moving block 5 again drives the L-shaped rod 4 and the moving plate 2 and the cleaning scraper 7 to wipe the filter 9 to scrape off the remaining impurities.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A refrigerator air duct for preventing solid particles from accumulating, characterized in that: The invention comprises an inner plate (1), a duct body (14) is mounted on the rear wall of the inner plate (1), an duct opening (3) communicating with the duct body (14) is formed on the inner plate (1), a filter screen (9) is embedded in the duct opening (3), a fixed pipe is fixedly connected to the upper end of the duct body (14), a cleaning mechanism for cleaning the filter screen (9) is arranged in the fixed pipe, the cleaning mechanism comprises two symmetrically arranged sliding rods (12) penetrating and slidably connected to the upper end of the fixed pipe, a moving block (5) is fixedly connected to the upper ends of the two sliding rods (12), two symmetrically arranged L-shaped rods (4) are fixedly connected to the side wall of the moving block (5), the lower ends of the two L-shaped rods (4) are fixedly connected to the moving plate (2), a cleaning scraper (7) is mounted on one end of the moving plate (2) close to the inner plate (1), and a driving mechanism for driving the cleaning mechanism is arranged in the fixed pipe.

2. The refrigerator air duct for preventing solid particle accumulation according to claim 1, characterized in that: The driving mechanism comprises a piston plate (13) which is sealingly and slidably connected in a fixed tube, and the upper end of the piston plate (13) is fixedly connected to the lower ends of two sliding rods (12).

3. The refrigerator air duct for preventing solid particle accumulation according to claim 2, characterized in that: The fixed pipe is connected to the air duct body (14) via a through groove (10), and a through hole (11) is provided on a side wall at one end of the fixed pipe.

4. The refrigerator air duct for preventing solid particle accumulation according to claim 3, characterized in that: A discharge pipe (8) is fixedly connected to the side wall of the fixed pipe, and the discharge pipe (8) is in communication with the through hole (11).

5. The refrigerator air duct for preventing solid particle accumulation according to claim 4, characterized in that: The lower end of the moving block (5) is elastically connected to the upper end of the fixed tube via two symmetrically arranged springs (6), and the two springs (6) are respectively sleeved on two sliding rods (12).

6. The refrigerator air duct for preventing solid particle accumulation according to claim 5, characterized in that: A booster nozzle is installed at one end of the discharge pipe (8) away from the fixed pipe, and the booster nozzle is located on one side of the filter screen (9) and cooperates with it.

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