A filter screen anti-blocking structure of a purifier

CN224551757UActive Publication Date: 2026-07-24HANGZHOU BENNIAO ENVIRONMENTAL PROTECTION SCIAND TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU BENNIAO ENVIRONMENTAL PROTECTION SCIAND TECH CO LTD
Filing Date
2025-06-17
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Air purifier filters tend to accumulate and become clogged after prolonged use, affecting ventilation and requiring cumbersome manual cleaning.

Method used

A filter anti-clogging structure for an air purifier was designed, which includes a drive motor to rotate the fan blades to increase the air intake rate, and a cleaning component that automatically cleans the filter surface with a brush plate to prevent clogging.

Benefits of technology

The system features automated filter cleaning, ensuring smooth airflow and efficient purification while reducing the need for manual cleaning.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of purifier filter screen anti-blocking structures, belong to purifier technical field, including purifier body, the bottom end of purifier body is equipped with multiple universal wheels, the inside of purifier body is equipped with air inlet bin, the inside of air vent is inserted with ventilation filter screen, ventilation filter screen is matched with air vent, the outside wall of rotating shaft is fastened and is connected with fan blade, the inside of air inlet bin is provided with cleaning assembly, the inside of air inlet bin is provided with driving assembly;The purifier of the utility model is in the use process, air inlet bin is rotated by driving motor and is driven fan blade to cooperate, improve the rate of suction air intake, and then improve purifier purification rate, while ventilation filter screen carries out preliminary filtration to impurity in air, make air intake relatively clean, improve purification effect, the surface of ventilation filter screen is cleaned by cleaning assembly, ventilation filter screen can be avoided to be blocked after long time use, guarantee the flowability of air intake.
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Description

Technical Field

[0001] This utility model belongs to the field of air purifier technology, specifically relating to an anti-clogging structure for air purifier filters. Background Technology

[0002] Air purifiers are used in homes, medical settings, and industry, with stand-alone household air purifiers being the mainstream product in the home market. Their primary function is to remove particulate matter from the air, including allergens and indoor PM2.5. They can also address indoor air pollution caused by renovations or other factors, such as volatile organic compound (VOC) pollution in basements and vehicles.

[0003] Most air purifiers have an isolation filter at the air inlet to block larger debris and dust, preventing impurities from entering the purifier and affecting its air purification effect. However, during prolonged use, the air inlet remains in an air intake state, causing dust to accumulate and clog the isolation filter surface. This affects the purifier's normal ventilation and requires manual cleaning and unblocking, which is quite troublesome.

[0004] Therefore, a filter anti-clogging structure for air purifiers is needed to solve the problem of accumulation and clogging of the outer isolation filter of the air purifier during long-term use. Utility Model Content

[0005] The purpose of this invention is to provide an anti-clogging structure for air purifier filters to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a filter anti-clogging structure for an air purifier, comprising an air purifier body, a plurality of evenly distributed casters mounted on the bottom of the air purifier body, an air intake chamber inside the air intake chamber, a vent on one side wall of the air intake chamber, a ventilation filter inserted into the vent, the ventilation filter cooperating with the vent, a drive motor inside the air purifier body, the output shaft of the drive motor being fixed to a rotating shaft via a coupling, a fan blade being fastened to the outer side wall of the rotating shaft, the fan blade being located inside the air intake chamber, a cleaning component being provided inside the air intake chamber, and a drive component for driving the cleaning component being provided inside the air intake chamber.

[0007] As a further embodiment of this utility model, the cleaning assembly includes a swing rod rotatably connected to a rotating shaft. One end of the swing rod is fixed with a guide rod, and a movable ring is sleeved on the outer side wall of the guide rod. The two ends of the movable ring are slidably connected to the two side walls of the air intake chamber, respectively. Two symmetrically arranged fixing blocks are fixed to one side wall of the movable ring, and a brush plate is fixed to one end of the two fixing blocks. The two ends of the brush plate are slidably connected to the two side walls of the air intake chamber, respectively, and the brush plate cooperates with the ventilation filter.

[0008] As a further embodiment of this utility model, a first pulley is fixed at the end of the swing rod, which is coaxially arranged with and rotatably connected to the rotating shaft. A small motor is fixed on the side of the air intake chamber, and a second pulley is fixed on the output end of the small motor. A belt is tensioned between the first pulley and the second pulley.

[0009] As a further embodiment of this utility model, the guide rod passes through the moving ring, the outer wall of the guide rod is slidably connected to the inner walls of both sides of the moving ring, and the length of the swing rod matches the length of the moving ring.

[0010] As a further embodiment of this utility model, the two side walls of the air intake chamber are respectively provided with symmetrically arranged sliding grooves, and the two ends of the moving ring extend into the two sliding grooves respectively, and the two ends of the moving ring are slidably connected to the two sliding grooves respectively.

[0011] As a further embodiment of this utility model, the two side walls of the air intake chamber are respectively provided with movable grooves, and the two ends of the brush plate extend into the two movable grooves respectively. The two ends of the brush plate are slidably connected to the two movable grooves respectively, and the brush plate is in contact with the ventilation filter.

[0012] As a further embodiment of this utility model, a through groove is provided on one side wall of the purifier body, the through groove is connected to the vent, the ventilation filter slides through the through groove, and a pull groove is provided on one side wall of the ventilation filter.

[0013] Compared with the prior art, the air purifier filter anti-clogging structure provided by this utility model has at least the following beneficial effects:

[0014] During use, the air purifier works by using a drive motor to rotate the fan blades inside the air intake chamber, increasing the air intake rate and thus improving the purification speed. At the same time, the ventilation filter performs preliminary filtration of impurities in the air, making the intake air cleaner and improving the purification effect. The cleaning component cleans the surface of the ventilation filter, preventing it from becoming clogged after prolonged use, ensuring airflow, and guaranteeing the purifier's effectiveness. It is highly practical. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the internal structure of the air intake chamber of this utility model;

[0018] Figure 4 This is a partial structural diagram of the brush plate of this utility model;

[0019] Figure 5 This is a partial structural diagram of the cleaning component of this utility model.

[0020] In the diagram: 1. Air purifier body; 2. Casters; 3. Air intake chamber; 4. Ventilation vent; 5. Ventilation filter; 6. Drive motor; 7. Shaft; 8. Fan blades; 9. Cleaning assembly; 91. Swing rod; 92. Guide rod; 93. Moving ring; 94. Fixing block; 95. Brush plate; 10. Slide groove; 11. Moving groove; 12. Through groove; 13. Pull groove; 14. Drive assembly; 1401. First pulley; 1402. Belt; 1403. Second pulley; 1404. Small motor. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments.

[0022] Please see Figure 1-5 This utility model provides an anti-clogging structure for an air purifier filter, including an air purifier body 1. Multiple evenly distributed casters 2 are installed at the bottom of the air purifier body 1. An air intake chamber 3 is provided inside the air intake chamber 1, and a vent 4 is provided on one side wall of the air intake chamber 3. A ventilation filter 5 is inserted into the vent 4. The ventilation filter 5 performs preliminary filtration of impurities in the air, making the incoming air cleaner and improving the purification effect. The ventilation filter 5 cooperates with the vent 4. A drive motor 6 is located inside the air purifier body 1, and the output shaft of the drive motor 6 is fixed by a coupling. The air purifier has a rotating shaft 7, and a fan blade 8 is fastened to the outer wall of the rotating shaft 7. The fan blade 8 is located inside the air intake chamber 3. During use, the fan blade 8 is driven to rotate by the drive motor 6 inside the air intake chamber 3 to increase the air intake rate and thus increase the purification rate of the air purifier. A cleaning component 9 is installed inside the air intake chamber 3, and a drive component 14 is installed inside the air intake chamber 3 to drive the cleaning component 9 to rotate. The cleaning component 9 cleans the surface of the ventilation filter 5, which can prevent the ventilation filter 5 from becoming clogged after long-term use and ensure the airflow.

[0023] Further as Figure 3 and Figure 5 As shown, it is worth noting that the cleaning assembly 9 includes a swing rod 91 rotatably connected to the rotating shaft 7. A guide rod 92 is fixed to one end of the swing rod 91. A moving ring 93 is sleeved on the outer wall of the guide rod 92. Both ends of the moving ring 93 are slidably connected to the side walls of the air intake chamber 3. Two symmetrically arranged fixing blocks 94 are fixed to one side wall of the moving ring 93. A brush plate 95 is fixed to one end of each of the two fixing blocks 94. Both ends of the brush plate 95 are slidably connected to the side walls of the air intake chamber 3. In conjunction with the ventilation filter 5, the drive assembly 14 drives the swing rod 91 to rotate, which in turn, in conjunction with the guide rod 92 and the moving ring 93, drives the brush plate 95 to move up and down back and forth, brushing the surface of the ventilation filter 5. The soft bristles of the brush plate 95 can pass through the filter holes of the ventilation filter 5, thereby cleaning away the dust and impurities adsorbed on the surface of the filter, preventing the ventilation filter from becoming clogged due to the adsorption of too many impurities during long-term use, ensuring smooth air intake, guaranteeing the effectiveness of the purifier, and demonstrating good practicality.

[0024] Further as Figure 5 As shown, it is worth noting that the guide rod 92 passes through the moving ring 93, the outer wall of the guide rod 92 is slidably connected to the inner walls of both sides of the moving ring 93, and the length of the swing rod 91 matches the length of the moving ring 93.

[0025] Further as Figure 3 and Figure 5 As shown, it is worth noting that the end of the swing rod 91 is fixed with a first pulley 1401 that is coaxially arranged with and rotatably connected to the rotating shaft 7. A small motor 1404 is fixed on the side of the air intake chamber 3. A second pulley 1403 is fixed on the output end of the small motor 1404. A belt 1402 is tensioned between the first pulley 1401 and the second pulley 1403. In actual operation, the output end of the small motor 1404 drives the second pulley 1403 to rotate at a low speed. Thus, the swing rod 91 rotates at a low speed around the rotating shaft 7 through the cooperation of the second pulley 1403, the first pulley 1401 and the belt 1402, thereby realizing the brush plate 95 to clean the ventilation filter 5.

[0026] This solution has the following working process: When the air purifier needs to be used to filter and purify the air, the drive motor 6 drives the rotating shaft 7 and the fan blades 8 to rotate. When the fan blades 8 rotate, air is drawn into the air intake chamber 3. The ventilation filter 5 at the vent 4 performs preliminary separation of impurities in the air to ensure that the intake air is relatively clean. The output end of the small motor 1404 drives the second pulley 1403 to rotate at a low speed. Thus, through the cooperation of the second pulley 1403, the first pulley 1401, and the belt 1402, the swing rod 91 rotates at a low speed around the rotating shaft 7. When the swing rod 91 rotates, it drives the guide rod 92 to slide back and forth within the moving ring 93, and at the same time, it drives the moving ring 93 to move... The moving ring 93 slides up and down between the two sliding grooves 10, which drives the brush plate 95 to move up and down, thereby cleaning the surface of the ventilation filter 5. This prevents the ventilation filter 5 from accumulating too much dust and causing blockage, ensuring the airflow of the air intake chamber 3 and improving the air purification efficiency of the purifier body 1. After long-term use of the purifier, dirt and other residues will remain on the surface of the ventilation filter 5. At this time, the ventilation filter 5 needs to be cleaned. When cleaning, pull the pull groove 13 to one side, which will cause the ventilation filter 5 to slide out from the through groove 12 on one side of the purifier body 1 for cleaning. After cleaning, the ventilation filter 5 can be inserted into the vent 4 from the through groove 12. The operation is relatively convenient.

[0027] Further as Figure 4 As shown, it is worth noting that the two side walls of the air intake chamber 3 are respectively provided with symmetrically arranged sliding grooves 10, and the two ends of the moving ring 93 extend into the two sliding grooves 10 respectively, and the two ends of the moving ring 93 are slidably connected to the two sliding grooves 10 respectively.

[0028] Further as Figure 3 and Figure 4 As shown, it is worth noting that the two side walls of the air intake chamber 3 are respectively provided with moving grooves 11, and the two ends of the brush plate 95 extend into the two moving grooves 11 respectively. The two ends of the brush plate 95 are slidably connected to the two moving grooves 11 respectively, and the brush plate 95 is in contact with the ventilation filter 5.

[0029] Further as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it is worth noting that a through groove 12 is provided on one side wall of the purifier body 1. The through groove 12 is connected to the vent 4. The ventilation filter 5 slides through the through groove 12. A pull groove 13 is provided on one side wall of the ventilation filter 5.

[0030] In summary: During use, the air intake chamber 3 is driven by the motor 6 to rotate the fan blades 8, thereby increasing the air intake rate and thus improving the purification rate. At the same time, the ventilation filter 5 performs preliminary filtration of impurities in the air, making the intake air cleaner and improving the purification effect. The cleaning component 9 cleans the surface of the ventilation filter 5, preventing it from becoming clogged after prolonged use and ensuring the smooth flow of air.

[0031] The drive motor 6 and the small motor 1404 can be purchased from the market. The drive motor 6 is equipped with a power supply. This is a mature technology in the field and has been fully disclosed. Therefore, it will not be described again in the specification.

Claims

1. A filter anti-clogging structure for an air purifier, comprising an air purifier body (1), characterized in that, The bottom of the purifier body (1) is equipped with multiple evenly distributed casters (2). An air intake chamber (3) is opened inside the purifier body (1). A ventilation port (4) is opened on one side wall of the air intake chamber (3). A ventilation filter (5) is inserted into the ventilation port (4). The ventilation filter (5) cooperates with the ventilation port (4). A drive motor (6) is inside the purifier body (1). The output shaft of the drive motor (6) is fixed to a rotating shaft (7) through a coupling. A fan blade (8) is tightly sleeved on the outer side wall of the rotating shaft (7). The fan blade (8) is located inside the air intake chamber (3). A cleaning component (9) is provided inside the air intake chamber (3). A drive component (14) is provided inside the air intake chamber (3) to drive the cleaning component (9).

2. The air purifier filter anti-clogging structure according to claim 1, characterized in that, The cleaning assembly (9) includes a swing rod (91) rotatably connected to the rotating shaft (7). One end of the swing rod (91) is fixed with a guide rod (92). A moving ring (93) is sleeved on the outer side wall of the guide rod (92). The two ends of the moving ring (93) are slidably connected to the two side walls of the air intake chamber (3). Two symmetrically arranged fixing blocks (94) are fixed on one side wall of the moving ring (93). A brush plate (95) is fixed at one end of the two fixing blocks (94). The two ends of the brush plate (95) are slidably connected to the two side walls of the air intake chamber (3). The brush plate (95) cooperates with the ventilation filter (5).

3. The air purifier filter anti-clogging structure according to claim 2, characterized in that, The swing arm (91) is fixed with a first pulley (1401) that is coaxial with and rotatably connected to the rotating shaft (7). A small motor (1404) is fixed on the side of the air intake chamber (3). A second pulley (1403) is fixed on the output end of the small motor (1404). A belt (1402) is tensioned between the first pulley (1401) and the second pulley (1403).

4. The air purifier filter anti-clogging structure according to claim 3, characterized in that, The guide rod (92) passes through the moving ring (93), and the outer wall of the guide rod (92) is slidably connected to the inner walls on both sides of the moving ring (93). The length of the swing rod (91) matches the length of the moving ring (93).

5. The air purifier filter anti-clogging structure according to claim 4, characterized in that, The air intake chamber (3) has symmetrically arranged sliding grooves (10) on both sides of its sidewalls. The two ends of the moving ring (93) extend into the two sliding grooves (10) respectively, and the two ends of the moving ring (93) are slidably connected to the two sliding grooves (10) respectively.

6. The air purifier filter anti-clogging structure according to claim 4, characterized in that, The air intake chamber (3) has movable grooves (11) on both sides of its sidewalls. The two ends of the brush plate (95) extend into the two movable grooves (11) respectively. The two ends of the brush plate (95) are slidably connected to the two movable grooves (11) respectively. The brush plate (95) is in contact with the ventilation filter (5).

7. The air purifier filter anti-clogging structure according to claim 5, characterized in that, A through groove (12) is provided on one side wall of the purifier body (1), the through groove (12) is connected to the vent (4), the ventilation filter (5) slides through the through groove (12), and a pull groove (13) is provided on one side wall of the ventilation filter (5).