Self-cleaning purifier

Abstract

The utility model relates to the technical field of air purifiers, in particular to a self-cleaning purifier. Comprising a main machine, an air inlet cover and a filter element, the main machine is provided with an air inlet and an air outlet, and the air inlet cover and the air inlet are arranged in a paired mode; the filter element is rotatably arranged in the air inlet cover, and the air inlet is communicated with an inner cavity of the filter element; a dust collection box is arranged on the air inlet cover, a dust suction opening and a negative pressure connector are formed in the dust collection box, and the dust suction opening and the negative pressure connector are both communicated with an inner cavity of the dust collection box; an air suction motor is arranged on the main machine, and the air suction motor is connected with the negative pressure interface in a paired manner; according to the self-cleaning purifier, pollutants can reduce the filtering efficiency and effect of the filter element, the air suction motor is communicated with the dust collection box so that negative pressure can be generated in an inner cavity of the dust collection box, and dust, hair and other pollutants attached to the surface of the filter element during rotation are sucked into the dust collection box from the dust suction opening to be collected; the air suction motor is arranged on the main machine and shares a control circuit of the main machine, so that the air inlet cover and the filter element part are not electrified.

Description

Technical Field

[0001] This utility model relates to the field of air purifier technology, and in particular to a self-cleaning purifier. Background Technology

[0002] With societal development, people are paying increasing attention to ambient air quality, leading to the emergence of air purifiers. Air purifiers are products that can filter pollutants from the air to improve air cleanliness. An air purifier mainly consists of a main unit with an air duct, a fan that drives airflow along the air duct, and an air filter installed within the air duct. Air purifiers can filter out many pollutants, most commonly dust and lint in household environments. However, over time, these pollutants accumulate on the air filter, causing a decrease in air purification efficiency.

[0003] Chinese patent CN118224696A discloses a pet air purifier, including a pre-filter, a hair removal mechanism, and a blockage detection element. The hair removal mechanism is located on the inlet side of the pre-filter. The hair removal mechanism includes a cleaning motor, a connecting rod, and a cleaning brush. One end of the connecting rod is connected to the output shaft of the cleaning motor, and the other end is connected to one end of the cleaning brush. The cleaning brush is fitted onto the surface of the pre-filter and can swing under the drive of the cleaning motor to sweep pet hair off the surface of the pre-filter.

[0004] In the aforementioned prior art, the cleaning brush, driven by the cleaning motor, needs to use a fan-shaped oscillation to clean the rectangular primary filter screen. The process is relatively complex. In particular, it requires a cleaning motor with a large torque to drive it, resulting in a complex structure and high cost. The larger the cleaning coverage area of ​​the cleaning brush, the higher the failure rate and the less stable it is.

[0005] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a self-cleaning purifier that is structurally sound, easy to use, and highly efficient.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] This utility model discloses a self-cleaning air purifier, comprising a main unit, an air inlet shroud, and a filter element. The main unit has an air inlet and an air outlet, and the air inlet shroud is paired with the air inlet. The filter element is rotatably disposed inside the air inlet shroud, and the air inlet connects to the inner cavity of the filter element. The air inlet shroud has a dust collection box, which has a suction port and a negative pressure interface, both of which connect to the inner cavity of the dust collection box. The main unit has a suction motor, which is paired with the negative pressure interface. The main unit generates airflow, allowing external air to enter the inner cavity of the filter element from its outer wall, and then flow from the air inlet to the air outlet. The air is purified by the filter element, thereby improving air quality. It is understood that after a certain period of operation, a large amount of dust and hair, among other pollutants, will accumulate on the outer wall of the filter element, reducing its filtration efficiency and effectiveness. The suction motor, connected to the dust collection box, creates negative pressure within its cavity. When the filter element rotates, dust, hair, and other floating debris are drawn into the dust collection box from the suction port and collected. Preferably, the intake motor is mounted on the main unit and shares the main unit's control circuit, so that the air intake shroud and filter element are not electrified.

[0009] According to the above solution, the dust collection box is equipped with a scraper, which is located on one side of the suction port and fits against the outer wall of the filter element. By rotating the filter element, the scraper slides along the outer wall of the filter element, causing dust and hair to fall off and enter the dust collection box from the suction port for collection. This achieves self-cleaning of the purifier without the need to disassemble the filter element, making it more convenient to use.

[0010] According to the above scheme, the main unit is equipped with a drive motor, which is connected to the filter element via a transmission connection. This utility model has a self-cleaning function. The filter element is driven by the drive motor, allowing it to rotate within the air inlet hood. The rotation of the filter element relative to the dust collection box causes its outer wall to slide along the scraper strip, thereby drawing dust and hair into the dust collection box through the suction port. Similarly, the drive motor is also located on the main unit, sharing the main unit's control circuit, ensuring that the air inlet hood and filter element are not energized.

[0011] According to the above scheme, the main unit is provided with a bottom cover, and a grid frame is provided on the bottom cover. Several gaps on the grid frame constitute the air inlet. The drive motor is fixedly mounted on the grid frame. The upper end of the air inlet shroud is detachably connected to the bottom cover. The upper end of the filter element is provided with a transmission disk. The output shaft of the drive motor passes through the grid frame and is paired with the transmission disk. After the air inlet shroud and the bottom cover are paired and connected, the air inlet formed by the grid frame can directly connect to the inner cavity of the filter element. In particular, the grid frame also serves as a mounting platform for the drive motor, allowing the output shaft of the drive motor to be directly paired with the transmission disk to drive the filter element to rotate.

[0012] According to the above scheme, the lower end of the air inlet shroud is provided with a base, and a centering shaft is provided on the base. The lower end of the filter element is provided with a positioning plate, and the positioning plate is rotatably connected to the centering shaft. It can be understood that the filter element adopts a cylindrical structure, with a transmission plate at the upper end and a positioning plate at the lower end. Similarly, the output shaft of the drive motor has a square head, which is paired with a square hole on the transmission plate for transmission connection; the positioning plate has a round hole, which is paired with the centering shaft to form a rotatable connection, allowing the filter element to rotate within the air inlet shroud. Preferably, the upper end of the centering shaft is made spherical, which can reduce the frictional resistance when the filter element rotates.

[0013] According to the above scheme, the upper end of the air inlet hood is provided with a middle frame, which is detachably connected to the bottom cover. An assembly slot is provided on one side of the air inlet hood, and the dust collection box is embedded in the assembly slot. The lower end of the dust collection box is snapped to the base, and a locking structure is provided between the dust collection box and the middle frame. The middle frame, as a structural component of the upper end of the air inlet hood, is paired with the bottom cover at the lower end of the air inlet hood to ensure the overall strength of the air inlet hood. It can be understood that the filter element is set inside the air inlet hood, and several gaps are distributed on the side wall of the air inlet hood. Simply put, the middle frame and the bottom cover are paired vertically, with several ribs arranged sequentially between them, thus forming a frame structure that connects the inside and outside. The air inlet hood is used to house the filter element, allowing external air to enter its inner cavity through the filter element. After being purified by the filter element, the air enters from the air inlet and exits from the air outlet.

[0014] Furthermore, a space is provided on one side of the air inlet hood to form the assembly slot, so that the dust collection box is placed on one side of the filter element, and the dust suction port is close to the filter element, and the scraper can be set to fit against the outer wall of the filter element.

[0015] According to the above scheme, the middle frame is equipped with a sealing nozzle, the upper end of which is paired with the suction motor; the negative pressure interface is located at the upper end of the dust collection box, and the negative pressure interface is paired with the lower end of the sealing nozzle. It can be understood that the middle frame, air inlet hood, and bottom cover form a component that is paired with the main unit, and a snap-fit ​​structure is provided between the middle frame and the bottom cover to form a detachable connection. Due to the presence of the middle frame and bottom cover, the suction motor is fixedly mounted on the bottom cover, and the dust collection box is located in the assembly slot below the middle frame, resulting in a gap between the suction motor and the negative pressure interface. This gap needs to be filled by a sealing nozzle, which can be paired with the air inlet of the suction motor and the negative pressure interface on the dust collection box. It can be understood that the sealing nozzle is made of elastic materials such as rubber or silicone, so that when the middle frame and bottom cover are paired, the sealing nozzle and the suction motor remain sealed, and when the dust collection box is assembled into the assembly slot, the sealing nozzle and the negative pressure interface remain sealed.

[0016] According to the above scheme, the dust collection box is equipped with a lock box, with a lock hole on the upper surface and a keyhole on the middle frame. The lock box contains a buckle and a spring. The buckle can slide up and down along the lock box, and the spring abuts against the inner wall of the lock box and the buckle, allowing the upper end of the buckle to pass through the lock hole and insert into the keyhole on the middle frame. The spring can push the buckle upwards out of the lock hole, and pulling the buckle retracts it into the lock box, thus forming a locking engagement between the buckle and the keyhole on the middle frame, allowing the dust collection box to be detachably installed on the air inlet hood.

[0017] According to the above scheme, the host is equipped with a fan assembly and a controller. The fan assembly is located between the air inlet and the air outlet, and the controller is located on the panel of the host. The controller is connected to the fan assembly, the intake motor and the drive motor through wires.

[0018] This utility model discloses a self-cleaning air purifier. Pollutants reduce the filtration efficiency and effect of the filter element. The suction motor is connected to the dust collection box, which creates negative pressure in the inner cavity. When the filter element rotates, the dust, hair and other pollutants adhering to the surface are sucked into the dust collection box from the suction port and collected. The suction motor is set on the main unit and shares the control circuit of the main unit, so that the air inlet and filter element are not electrified. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the disassembled structure of the main unit and the air inlet shroud of this utility model;

[0021] Figure 3 This is a schematic diagram of the overall exploded structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0023] Figure 5 This is a schematic diagram showing the assembly relationship between the dust collection box, filter element, and air inlet hood of this utility model.

[0024] Figure 6 This is a schematic diagram illustrating the self-cleaning principle of the dust collection box and filter element of this utility model.

[0025] In the picture:

[0026] 1. Main unit; 2. Air inlet hood; 3. Dust collection box; 11. Air inlet; 12. Air outlet; 13. Suction motor; 14. Drive motor; 15. Bottom cover; 16. Grid frame; 17. Fan assembly; 18. Controller; 21. Filter element; 22. Transmission disc; 23. Base; 24. Centering shaft; 25. Positioning disc; 26. Middle frame; 27. Assembly slot; 28. Sealing nozzle; 31. Dust suction port; 32. Scraper strip; 33. Negative pressure interface; 34. Lock box; 35. Lock hole; 36. Plate buckle; 37. Spring. Detailed Implementation

[0027] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0028] like Figure 1-6 As shown, the self-cleaning air purifier of this utility model includes a main unit 1, an air inlet shroud 2, and a filter element 21. The main unit 1 has an air inlet 11 and an air outlet 12, and the air inlet shroud 2 is paired with the air inlet 11. The filter element 21 is rotatably disposed inside the air inlet shroud 2, and the air inlet 11 communicates with the inner cavity of the filter element 21. The air inlet shroud 2 is provided with a dust collection box 3, which has a suction port 31 and a negative pressure interface 33, both of which are connected to the inner cavity of the dust collection box 3. The main unit 1 is provided with a suction motor 13, which is paired with the negative pressure interface 33. The main unit 1 can generate airflow, and external air enters the inner cavity of the filter element 21 from the outer wall of the filter element 21, and then flows from the air inlet 11 to the air outlet 12. The air is purified by the filter element 21, thereby improving air quality. Understandably, after a certain period of operation, a large amount of dust and hair, among other contaminants, will accumulate on the outer wall of the filter element 21, reducing its filtration efficiency and effectiveness. The suction motor 13, connected to the dust collection box 3, creates negative pressure within its cavity. As the filter element 21 rotates, dust, hair, and other floating debris are drawn into the dust collection box 3 from the suction port 31 and collected. Preferably, the suction motor 13 is mounted on the main unit 1, sharing its control circuit, thus ensuring that the air inlet shroud 2 and the filter element 21 are not electrically powered.

[0029] The dust collection box 3 is equipped with a scraper 32, which is located on one side of the suction port 31 and fits against the outer wall of the filter element 21. By rotating the filter element 21, the scraper 32 slides along the outer wall of the filter element 21, causing dust and hair to fall off and enter the dust collection box 3 from the suction port 31 for collection. This achieves self-cleaning of the purifier without the need to disassemble the filter element 21, making it more convenient to use.

[0030] The main unit 1 is equipped with a drive motor 14, which is connected to the filter element 21. This invention features a self-cleaning function. The filter element 21 is driven by the drive motor 14, allowing it to rotate within the air inlet hood 2. The rotation of the filter element 21 relative to the dust collection box 3 causes its outer wall to slide along the scraper strip 32, thereby drawing dust and hair into the dust collection box 3 through the suction port 31. Similarly, the drive motor 14 is also located on the main unit 1, sharing the main unit 1's control circuit, ensuring that the air inlet hood 2 and the filter element 21 are not energized.

[0031] The main unit 1 is provided with a bottom cover 15, and a grid frame 16 is provided on the bottom cover 15. Several gaps on the grid frame 16 form the air inlet 11. The drive motor 14 is fixedly mounted on the grid frame 16. The upper end of the air inlet shroud 2 is detachably connected to the bottom cover 15. The upper end of the filter element 21 is provided with a transmission disk 22. The output shaft of the drive motor 14 passes through the grid frame 16 and is paired with the transmission disk 22. After the air inlet shroud 2 and the bottom cover 15 are paired and connected, the air inlet 11 formed by the grid frame 16 can directly connect to the inner cavity of the filter element 21. In particular, the grid frame 16 also serves as a mounting platform for the drive motor 14, so that the output shaft of the drive motor 14 can be directly paired with the transmission disk 22 to drive the filter element 21 to rotate.

[0032] The lower end of the air inlet shroud 2 is provided with a base 23, and a centering shaft 24 is provided on the base 23. The lower end of the filter element 21 is provided with a positioning plate 25, and the positioning plate 25 is rotatably connected to the centering shaft 24. It can be understood that the filter element 21 adopts a cylindrical structure, with a transmission plate 22 at the upper end and a positioning plate 25 at the lower end. Similarly, the output shaft of the drive motor 14 has a square head, which is connected to the square hole on the transmission plate 22 for transmission. The positioning plate 25 has a round hole, which is connected to the centering shaft 24 for rotatable connection, allowing the filter element 21 to rotate within the air inlet shroud 2. Preferably, the upper end of the centering shaft 24 is spherical, which can reduce the frictional resistance when the filter element 21 rotates.

[0033] The upper end of the air inlet hood 2 is provided with a middle frame 26, which is detachably connected to the bottom cover 15. An assembly slot 27 is provided on one side of the air inlet hood 2, and a dust collection box 3 is embedded in the assembly slot 27. The lower end of the dust collection box 3 is snapped to the base 23, and a locking structure is provided between the dust collection box 3 and the middle frame 26. The middle frame 26, as a structural component of the upper end of the air inlet hood 2, is paired with the bottom cover 15 at the lower end of the air inlet hood 2 to ensure the overall strength of the air inlet hood 2. It can be understood that the filter element 21 is set inside the air inlet hood 2, and several gaps are distributed on the side wall of the air inlet hood 2. Simply put, the middle frame 26 and the bottom cover 15 are paired vertically, with several ribs arranged sequentially between them, thus forming a frame structure that connects the inside and outside. The air inlet hood 2 is used to house the filter element 21, allowing external air to enter its inner cavity through the filter element 21. After being purified by the filter element 21, the air enters from the air inlet and exits from the air outlet.

[0034] Furthermore, an empty space is provided on one side of the air inlet hood 2 to form the assembly slot 27, so that the dust collection box 3 is placed on one side of the filter element 21, and the dust suction port 31 is close to the filter element 21, and the scraper 32 can be set to fit against the outer wall of the filter element 21.

[0035] The middle frame 26 is provided with a sealing nozzle 28, the upper end of which is paired with the suction motor 13. The negative pressure interface 33 is located at the upper end of the dust collection box 3, and the lower end of the negative pressure interface 33 is paired with the sealing nozzle 28. It can be understood that the middle frame 26, the air inlet hood 2, and the bottom cover 15 form an assembly that is paired with the main unit 1. A snap-fit ​​structure is provided between the middle frame 26 and the bottom cover 15 to form a detachable connection. Due to the presence of the middle frame 26 and the bottom cover 15, the suction motor 13 is fixedly installed on the bottom cover 15, and the dust collection box 3 is located in the mounting slot 27 below the middle frame 26, resulting in a gap between the suction motor 13 and the negative pressure interface 33. This gap needs to be filled by a sealing nozzle 28, and the sealing nozzle 28 can be paired with the air inlet of the suction motor 13 and the negative pressure interface 33 on the dust collection box 3. It is understood that the sealing nozzle 28 is made of elastic materials such as rubber and silicone, so that when the middle frame 26 and the bottom cover 15 are paired and connected, the sealing nozzle 28 and the suction motor 13 are kept sealed, and when the dust collection box 3 is assembled into the assembly slot 27, the sealing nozzle 28 and the negative pressure interface 33 are kept sealed.

[0036] The dust collection box 3 is equipped with a lock box 34. A lock hole 35 is provided on the upper surface of the dust collection box 3, and a keyhole is provided on the middle frame 26. The lock box 34 contains a buckle 36 and a spring 37. The buckle 36 can slide up and down along the lock box 34, and the spring 37 abuts against the inner wall of the lock box 34 and the buckle 36, causing the upper end of the buckle 36 to pass through the lock hole 35 and insert into the keyhole on the middle frame 26. The spring 37 can push the buckle 36 upwards out of the lock hole 35, and pulling the buckle 36 can retract it into the lock box 34, so that the buckle 36 and the keyhole on the middle frame 26 form a locking engagement, allowing the dust collection box 3 to be detachably installed on the air inlet hood 2.

[0037] The host 1 is equipped with a fan assembly 17 and a controller 18. The fan assembly 17 is located between the air inlet 11 and the air outlet 12. The controller 18 is located on the panel of the host 1. The controller 18 is connected to the fan assembly 17, the intake motor 13 and the drive motor 14 through wires.

[0038] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A self-cleaning air purifier, comprising a main unit (1), an air inlet shroud (2), and a filter element (21), wherein the main unit (1) is provided with an air inlet (11) and an air outlet (12), and the air inlet shroud (2) is paired with the air inlet (11); characterized in that, The filter element (21) is rotatably disposed inside the air inlet cover (2), and the air inlet (11) is connected to the inner cavity of the filter element (21); the air inlet cover (2) is provided with a dust collection box (3), and the dust collection box (3) is provided with a suction port (31) and a negative pressure interface (33), and the suction port (31) and the negative pressure interface (33) are both connected to the inner cavity of the dust collection box (3); The host (1) is equipped with a suction motor (13), which is paired with a negative pressure port (33).

2. The self-cleaning purifier according to claim 1, characterized in that, The dust collection box (3) is provided with a scraper (32), which is located on one side of the suction port (31) and fits against the outer wall of the filter element (21).

3. The self-cleaning purifier according to claim 1, characterized in that, The host (1) is equipped with a drive motor (14), which is connected to the filter element (21) in a transmission manner.

4. The self-cleaning purifier according to claim 3, characterized in that, The main unit (1) is provided with a bottom cover (15), and a grid frame (16) is provided on the bottom cover (15). Several gaps on the grid frame (16) constitute the air inlet (11). The drive motor (14) is fixedly installed on the grid frame (16). The upper end of the air inlet cover (2) is detachably connected to the bottom cover (15). The upper end of the filter element (21) is provided with a transmission disk (22). The output shaft of the drive motor (14) passes through the grid frame (16) and is paired with the transmission disk (22).

5. The self-cleaning purifier according to claim 4, characterized in that, The lower end of the air inlet hood (2) is provided with a base (23), and a centering shaft (24) is provided on the base (23). The lower end of the filter element (21) is provided with a positioning plate (25), and the positioning plate (25) is rotatably connected to the centering shaft (24).

6. The self-cleaning purifier according to claim 5, characterized in that, The upper end of the air inlet hood (2) is provided with a middle frame (26), and the middle frame (26) is detachably connected to the bottom cover (15); an assembly slot (27) is opened on one side of the air inlet hood (2), the dust collection box (3) is embedded in the assembly slot (27), the lower end of the dust collection box (3) is snapped to the base (23), and a locking structure is provided between the dust collection box (3) and the middle frame (26).

7. The self-cleaning purifier according to claim 6, characterized in that, The middle frame (26) is provided with a sealing nozzle (28), and the upper end of the sealing nozzle (28) is paired with the suction motor (13); the negative pressure interface (33) is located at the upper end of the dust collection box (3), and the negative pressure interface (33) is paired with the lower end of the sealing nozzle (28).

8. The self-cleaning purifier according to claim 6, characterized in that, The dust collection box (3) is provided with a lock box (34), and the upper surface of the dust collection box (3) is provided with a lock hole (35), and the middle frame (26) is provided with a keyhole; the lock box (34) is provided with a buckle (36) and a spring (37), the buckle (36) can slide up and down along the lock box (34), and the spring (37) touches the inner wall of the lock box (34) and the buckle (36), so that the upper end of the buckle (36) passes through the lock hole (35) and is inserted into the keyhole on the middle frame (26).

9. The self-cleaning purifier according to claim 1 or 3, characterized in that, The host (1) is provided with a fan assembly (17) and a controller (18). The fan assembly (17) is located between the air inlet (11) and the air outlet (12). The controller (18) is located on the panel of the host (1). The controller (18) is connected to the fan assembly (17), the intake motor (13) and the drive motor (14) respectively through lines.

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