A pre-filter cleaning assembly and an air cleaner employing the same

Abstract

This utility model relates to the field of air purification equipment, and more particularly to a pre-filter cleaning component and an air purifier using the component, comprising: a scraper cover with a slider that cooperates with the slide groove; a scraper rotatably mounted on the scraper cover; and a ratchet mechanism including a ratchet and a pawl that cooperate with each other; wherein one of the ratchet and the pawl is fixed to the scraper cover, and the other is connected to the scraper. Through the sliding design of the scraper cover along the length of the slide groove, the scraper rotates to scrape and clean large particles of dust, hair, lint, etc., on the pre-filter; simultaneously, under the unidirectional control of the ratchet mechanism, the rotation direction of the scraper can be restricted. Thus, when the scraper cover and scraper slide in the first direction, the scraper is restricted from rotation, cleaning the pre-filter in a fixed position; and when sliding back in the second direction, the scraper rotates freely, thereby preventing the previously scraped large particles of dust, hair, lint, etc., from being stirred up, thus affecting the cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of air purification equipment, and more particularly to a pre-filter cleaning component and an air purifier using the component. Background Technology

[0002] With the widespread use of air purifiers, people use them in various places and environments. A pre-filter is usually installed before the main filter in an air purifier. After the machine is turned on, pollutants accumulate on the pre-filter and the main filter. The pre-filter is mainly used to intercept large particles of dust, hair, and lint. Currently, cleaning the pre-filter is mostly done manually, requiring removal and reinstallation, necessitating frequent removal and cleaning. To improve the inconvenience of removing and installing the pre-filter, cleaning kits that allow you to directly scrape away dirt from the pre-filter are available on the market. However, while these kits effectively scrape off dirt when sliding down, they often bring up the scraped dirt during the upward movement, thus affecting the cleaning effect. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a pre-filter cleaning component that can prevent the cleaning component from bringing up previously scraped dirt during recovery, thereby affecting the cleaning effect, and an air purifier using the component.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a pre-filter cleaning assembly, installed on a pre-filter with a sliding groove, comprising: a scraper cover with a slider that cooperates with the sliding groove; a scraper rotatably mounted on the scraper cover; and a ratchet mechanism comprising a ratchet and a pawl that cooperate with each other; wherein one of the ratchet and the pawl is fixed to the scraper cover, and the other is connected to the scraper.

[0005] Furthermore, it also includes a rotating shaft, which is mounted on the scraper cover, the scraper is rotatably connected to the rotating shaft, and the pawl or the ratchet is fixed on the rotating shaft.

[0006] Furthermore, the pawl is an elastic pawl.

[0007] Furthermore, the ratchet includes a fixed part and a plurality of slots arranged circumferentially along the inner wall of the fixed part, and the pawl engages with the slots.

[0008] Furthermore, it also includes an elastic element that abuts against the scraper cover and the scraper.

[0009] Furthermore, it also includes a rotating shaft, which is mounted on the cover plate, the scraper is rotatably sleeved with the rotating shaft, and the elastic element abuts between the scraper cover and the rotating shaft.

[0010] Furthermore, it also includes a collection box located at the end of the cleaning stroke of the chute.

[0011] Furthermore, a cleaning layer is arranged on the outer side of the scraper.

[0012] Furthermore, the cleaning layer is a velvet cloth layer.

[0013] An air purifier includes: a pre-filter and a pre-filter cleaning component.

[0014] The beneficial effects of this utility model are as follows: the sliding design of the scraper cover along the length of the groove allows the scraper to rotate and scrape away large particles of dust, hair, cotton lint, etc. on the pre-filter; at the same time, with the unidirectional control of the ratchet mechanism, the rotation direction of the scraper can be restricted, so that when the scraper cover and scraper slide in the first direction, the scraper is restricted from rotating and scrapes the pre-filter in a fixed shape, and then when sliding back in the second direction, the scraper rotates freely, thus avoiding bringing up the large particles of dust, hair, cotton lint, etc. that were previously scraped off, which would affect the cleaning effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the pre-filter and pre-filter cleaning component assembly of an air purifier after the air inlet screen has been removed, according to a specific embodiment of the present invention. Figure 2 This is a cross-sectional view of the pre-filter groove of the air purifier in a specific embodiment of the present invention when it is engaged with the slider of the pre-filter cleaning component. Figure 3 This is a schematic diagram of the pre-filter cleaning assembly according to a specific embodiment of the present invention; Figure 4 for Figure 3 Cross-sectional view at point AA; Figure 5 for Figure 4 Enlarged view at point A; Figure 6 for Figure 3 Cross-sectional view at BB; Figure 7 for Figure 3 Cross-sectional view at CC Figure 8 This is a schematic diagram of the pre-filter cleaning assembly from another perspective, representing a specific embodiment of the present invention. Label Explanation: 1. Air purifier; 2. Pre-filter; 21. Slide rail; 3. Pre-filter cleaning assembly; 31. Scraper assembly; 311. Scraper cover; 312. Scraper; 313. Cleaning layer; 314. Slider; 315. Collection box; 316. Elastic element; 317. Elastic element cover; 318. Shaft; 32. Ratchet mechanism; 321. Pawl; 322. Ratchet; 3221. Fixing part; 3222. Slot; 4. First direction; 5. Second direction. Detailed Implementation

[0016] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0017] Please refer to Figures 1 to 8 As shown, a pre-filter cleaning assembly 3 is installed on a pre-filter 2 provided with a slide groove 21, comprising: a scraper cover 311, on which a slider 314 is provided to cooperate with the slide groove 21; a scraper 312, the scraper 312 being rotatably mounted on the scraper cover 311; and a ratchet mechanism 32, the ratchet mechanism 32 including a ratchet 322 and a pawl 321 cooperating with each other; wherein, one of the ratchet 322 and the pawl 321 is fixed to the scraper cover 311, and the other is connected to the scraper 312.

[0018] As can be seen from the above description, the beneficial effects of this utility model are as follows: the sliding design of the scraper cover 311 along the length of the groove 21 allows the scraper 312 to rotate and scrape away large particles of dust, hair, cotton lint, etc. on the pre-filter 2; at the same time, with the unidirectional control of the ratchet mechanism 32, the rotation direction of the scraper 312 can be restricted, so that when the scraper cover 311 and the scraper 312 slide in the first direction 4, the scraper 312 is restricted from rotating and scrapes the pre-filter 2 in a fixed form, and then when sliding back in the second direction 5, the scraper 312 rotates freely, thereby avoiding the removal of large particles of dust, hair, cotton lint, etc. that were previously scraped off, which would affect the cleaning effect.

[0019] Furthermore, such as Figure 4 and Figure 5 As shown, it also includes a rotating shaft 318, which is mounted on the scraper cover 311. The scraper 312 is rotatably sleeved with the rotating shaft 318, and the pawl 321 or the ratchet 322 is fixed on the rotating shaft 318.

[0020] As described above, the scraper 312 is rotated by the cooperation between the rotating shaft 318 and the scraper cover 311; the ratchet mechanism 32 is connected to the rotating shaft 318 by its pawl 321 or ratchet 322 to achieve unidirectional rotation control of the scraper 312.

[0021] Furthermore, the pawl 321 is an elastic pawl 321.

[0022] As can be seen from the above description, the use of elastic pawl 321 can improve the smooth operation of ratchet mechanism 32 and reduce wear between pawl 321 and ratchet 322.

[0023] Furthermore, such as Figure 6 As shown, the ratchet 322 includes a fixing part 3221 and a plurality of slots 3222 arranged circumferentially along the inner wall of the fixing part 3221, and the pawl 321 cooperates with the slots 3222.

[0024] As described above, the pawl 321 is built into the fixing part 3221 of the ratchet 322, and the pawl 321 cooperates with the groove 3222 on the inner wall of the fixing part 3221 to achieve unidirectional rotation; the built-in pawl 321 can ensure accurate cooperation with the groove 3222 and avoid locking failure.

[0025] Furthermore, such as Figure 4 and Figure 5 As shown, it also includes an elastic element 316, which abuts between the scraper cover 311 and the scraper 312.

[0026] As described above, the clamping force provided by the elastic element 316 enables the scraper 312 to remain pressed against the pre-filter 2, ensuring the cleaning effect during operation.

[0027] Furthermore, such as Figure 4 and Figure 5 As shown, it also includes a rotating shaft 318, which is mounted on the scraper cover 311. The scraper 312 is rotatably sleeved with the rotating shaft 318, and the elastic member 316 abuts between the scraper cover 311 and the rotating shaft 318.

[0028] As can be seen from the above description, specifically, by pressing the rotating shaft 318, the sleeved scraper 312 is kept pressed against the pre-filter 2 as a whole; the abutting design of the elastic element 316 can also strengthen the cooperation between the scraper 312 and the ratchet mechanism 32.

[0029] Furthermore, such as Figure 1 As shown, it also includes a collection box 315, which is located at the end of the cleaning stroke of the chute 21.

[0030] As described above, the collection box 315 collects large particles of dust, hair, and cotton scraps scraped off by the scraper 312.

[0031] Furthermore, such as Figure 4 and Figure 7 As shown, a cleaning layer 313 is arranged on the outer side of the scraper 312.

[0032] As described above, the cleaning layer 313 adsorbs and cleans the dirt on the pre-filter 2.

[0033] Furthermore, the cleaning layer 313 is a velvet layer.

[0034] As can be seen from the above description, the use of a flannel layer design can enhance the adsorption of dirt and improve the cleaning effect.

[0035] Please refer to Figure 1 As shown, an air purifier 1 includes: a pre-filter 2 and a pre-filter cleaning assembly 3 as described above.

[0036] Example 1 like Figures 1 to 4 As shown, a pre-filter cleaning assembly 3 includes a scraper assembly 31, a ratchet mechanism 32, and a collection box 315. The pre-filter cleaning assembly 3 is disposed on a pre-filter 2, which has a groove 21 along its height direction. The collection box 315 is disposed at the bottom of the groove 21 and is opposite to the scraper assembly 31.

[0037] like Figures 4 to 6 As shown, the scraper assembly 31 includes a scraper cover 311, a rotating shaft 318, a scraper 312, a pressing mechanism, and a slider 314. The scraper 312 is a cylindrical scraper 312, with the rotating shaft 318 passing through its central part. The scraper 312 is rotatable relative to the rotating shaft 318, and the rotating shaft 318 is fixedly mounted on the scraper cover 311. A slider 314 is provided on one side of the scraper cover 311, and the slider 314 is movablely engaged with the slide groove 21.

[0038] like Figure 4 , Figure 5 and Figure 8 As shown, the clamping mechanism includes an elastic element 316 and an elastic element cover 317. The scraper cover 311 is provided with a cylindrical groove, the elastic element 316 is disposed in the cylindrical groove, one end of the rotating shaft 318 abuts against the elastic element 316, and the elastic element cover 317 abuts against the rotating shaft 318 and is locked onto the scraper cover 311. The design of the elastic element 316 enables it to provide clamping force to the scraper 312.

[0039] like Figure 7 As shown, the outer ring of the scraper 312 is wrapped with a cleaning layer 313, which is made of polyester fleece.

[0040] The ratchet mechanism 32 is located inside the scraper 312. The ratchet mechanism 32 is connected to the scraper 312 and the scraper cover 311 to realize the unidirectional rotation of the scraper 312.

[0041] Example 2 The difference between this embodiment and Embodiment 1 is that: The ratchet mechanism 32 includes a ratchet 322 and a pawl 321. The ratchet 322 is connected to the scraper 312, and the pawl 321 is attached to the ratchet 322.

[0042] When the scraper 312 slides downwards, the pawl 321 engages with the teeth of the ratchet 322, restricting the rotation of the ratchet 322. The scraper 312 remains stationary, scraping the dirt on the pre-filter 2 into the collection box 315 in a fixed position. When the scraper 312 slides upwards, the pawl 321 engages with the teeth of the ratchet 322, but the pawl 321 no longer engages with the teeth of the ratchet 322. The ratchet 322 rotates freely, and the scraper 312 rotates. At this time, the scraper 312 will not pick up the scraped dirt.

[0043] Example 3 The difference between this embodiment and Embodiment 1 is that: like Figures 4 to 6 As shown, the ratchet mechanism 32 includes a ratchet 322 and a pawl 321. The ratchet 322 includes a fixed part 3221 and a plurality of slots 3222 arranged circumferentially along the inner wall of the fixed part 3221. The fixed part 3221 of the ratchet 322 is engaged with the scraper 312, and the pawl 321 cooperates with the slots 3222. The rotating shaft 318 is connected to the pawl 321. In this embodiment, the pawl 321 is a spring.

[0044] When the scraper 312 slides downward, the spring plate abuts against and is fixed to the slot 3222, restricting the rotation of the scraper 312 and scraping the dirt on the pre-filter 2 into the collection box 315 in a fixed shape. When the scraper 312 slides upward, the spring plate abuts against the slot 3222, but the spring plate is no longer locked into the slot 3222, and the scraper 312 rotates freely. At this time, the scraper 312 will not pick up the scraped dirt.

[0045] Example 4 The difference between this embodiment and Embodiment 1 is that: The ratchet mechanism 32 includes a ratchet 322 and a pawl 321. The ratchet 322 includes a fixed part 3221 and a plurality of slots 3222 arranged circumferentially along the inner wall of the fixed part 3221. The fixed part 3221 is rotatable relative to the pawl 321. The pawl 321 cooperates with the slots 3222. The rotating shaft 318 is connected to the fixed part 3221. The scraper 312 is connected to the pawl 321. In this embodiment, the pawl 321 is a spring.

[0046] When the scraper 312 slides downward, the spring plate abuts and fixes against the slot 3222, restricting the scraper 312. The scraper 312 scrapes the dirt on the pre-filter 2 into the collection box 315 in a fixed shape. When the scraper 312 slides upward, the spring plate abuts against the slot 3222, but the spring plate is no longer locked into the slot 3222. The scraper 312 rotates freely, and at this time, the scraper 312 will not pick up the scraped dirt.

[0047] Example 5 like Figure 1 As shown, an air purifier 1 includes a pre-filter 2 and a pre-filter cleaning component 3 as described in any one of the above embodiments one to four.

[0048] In summary, the pre-filter cleaning component and air purifier using this component provided by this utility model, through the sliding design of the scraper cover along the length of the groove, allow the scraper to rotate and scrape away large particles of dust, hair, lint, etc. on the pre-filter. At the same time, with the unidirectional control of the ratchet mechanism, the rotation direction of the scraper can be restricted. Thus, when the scraper cover and scraper slide in the first direction, the scraper is restricted from rotation and scrapes the pre-filter in a fixed position. Then, when sliding back in the second direction, the scraper rotates freely, thereby avoiding bringing up the previously scraped large particles of dust, hair, lint, etc., which would affect the cleaning effect.

[0049] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pre-filter cleaning assembly, mounted on a pre-filter with a groove, characterized in that, include: A scraper cover, which is provided with a slider that mates with the groove; A scraper, which is rotatably mounted on the scraper cover; A ratchet mechanism, comprising a ratchet and a pawl that cooperate with each other; wherein, One of the ratchet and pawl is fixed to the scraper cover, and the other is connected to the scraper.

2. The pre-filter cleaning assembly according to claim 1, characterized in that, It also includes a rotating shaft, which is mounted on the scraper cover. The scraper is rotatably connected to the rotating shaft, and the pawl or the ratchet is fixed on the rotating shaft.

3. The pre-filter cleaning assembly according to claim 1, characterized in that, The pawl is an elastic pawl.

4. The pre-filter cleaning assembly according to claim 3, characterized in that, The ratchet includes a fixed part and a plurality of slots arranged circumferentially along the inner wall of the fixed part, and the pawl engages with the slots.

5. The pre-filter cleaning assembly according to claim 1, characterized in that, It also includes an elastic element that abuts against the scraper cover and the scraper.

6. The pre-filter cleaning assembly according to claim 5, characterized in that, It also includes a rotating shaft, which is mounted on the scraper cover. The scraper is rotatably connected to the rotating shaft, and the elastic element abuts between the scraper cover and the rotating shaft.

7. The pre-filter cleaning assembly according to claim 1, characterized in that, It also includes a collection box located at the end of the cleaning stroke of the chute.

8. The pre-filter cleaning assembly according to claim 1, characterized in that, A cleaning layer is arranged on the outer side of the scraper.

9. The pre-filter cleaning assembly according to claim 8, characterized in that, The cleaning layer is a velvet cloth layer.

10. An air purifier, characterized in that, include: A pre-filter and a pre-filter cleaning assembly as described in any one of claims 1 to 9.

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