Indoor air purifier

Abstract

The present invention belongs to the technical field of air purifiers, and specifically is an indoor air purifier, comprising a purifier body, a side wall of the purifier body is provided with an air inlet, a surface of the air inlet is provided with a plurality of air inlet grooves, a side wall of the purifier body is provided with an air outlet on a side away from the air inlet, a cavity is provided inside the purifier body, a filter element is provided inside the purifier body and in the cavity, the filter element is integrally composed of multiple layers of filter screens, the multiple layers of filter screens include a pre-filter screen, a HEPA filter screen, an activated carbon filter screen, a formaldehyde removal filter screen, etc.; when a cleaning ring is driven by a driving mechanism to move, dust adhered to the surface of the outermost filter screen of the filter element can be automatically removed, thereby ensuring that the subsequent filter element continues to remove harmful substances in the air, and also avoiding the problem of excessive impurities adhering to the surface of the filter element, resulting in low air purification efficiency, while improving the service life of the filter element.

Description

Technical Field

[0001] The invention belongs to the technical field of air purifiers, in particular to an indoor air purifier. Background Art

[0002] An air purifier is a device used to remove pollutants from indoor air and improve air quality. They can effectively remove or reduce a variety of harmful substances in the air, including particulate matter (such as dust, pollen, PM2.5, etc.), harmful gases (such as formaldehyde, benzene, etc.), bacteria, viruses or other microorganisms.

[0003] The prior art also proposes some solutions for air purifiers, such as a patent application with publication number CN108895564A, which discloses a multifunctional indoor air purifier, including a box, an air quality monitoring module installed in the box, and an air purification module, wherein the box is provided with an air inlet at the lower end and an air outlet at the upper end, the air quality monitoring module is arranged on the air inlet side, and the air purification module is arranged in the space between the air quality monitoring module and the air outlet; the air purification module includes an air treatment layer, a spray box and an ultrasonic atomizer, wherein the air treatment layer is installed as a whole in the middle of the box, dividing the box into upper and lower spaces, the ultrasonic atomizer is installed in the upper space, the spray box is installed in the lower space, and the ultrasonic atomizer is connected to the spray box through a water pipe. The invention can simultaneously and efficiently remove particulate pollutants, gaseous pollutants and microbial pollutants, and has the functions of removing formaldehyde, deodorizing, anti-fouling and purifying air, with novel design, simple structure and multiple functional combinations.

[0004] Although the above technical solution can effectively remove particulate pollutants, there are still other problems in its specific use. For example, during the air purification process, the outermost filter of the filter element often adheres to some larger impurities and dust in the air, which will affect the use of the purifier itself over a long period of time, and it is more troublesome to clean its surface.

[0005] To this end, the present invention provides an indoor air purifier. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: an indoor air purifier described in the present invention includes a purifier body, a side wall of the purifier body is provided with an air inlet, a surface of the air inlet is provided with a plurality of air inlet grooves, a side wall of the purifier body away from the air inlet is provided with an air outlet, a cavity is provided inside the purifier body, a filter element is provided inside the purifier body and in the cavity; a cleaning ring is provided on the outer peripheral surface of the filter element, the inner wall of the cleaning ring is in contact with the outermost filter screen surface of the filter element, and a driving mechanism is provided inside the purifier body, and the driving mechanism is used to drive the cleaning ring to move along the length direction of the filter element.

[0008] Preferably, the driving mechanism comprises an electric telescopic rod fixedly mounted on the inner wall of the cavity, the electric telescopic rod is provided in two groups and is symmetrically arranged relative to the cavity, the telescopic ends of the two electric telescopic rods are fixedly mounted with an annular plate, and the cleaning ring is arranged on the side wall of the annular plate; when working, in an initial state, the cleaning ring is located at the outermost edge of the filter element, and when it is necessary to deal with the dust adhered to the surface of the filter element, by controlling the two electric telescopic rods to move synchronously, the telescopic ends of the electric telescopic rods drive the annular plate and the cleaning ring to move, and the cleaning ring will move along the outer peripheral surface of the filter element, and then the cleaning ring can clean the impurities adhered to the surface of the filter element, which is convenient to operate and does not require manual cleaning by the staff.

[0009] Preferably, the driving mechanism also includes an annular groove opened on the outer peripheral surface of the cleaning ring, and a plurality of limit column racks are fixedly installed on the cavity wall of the cavity, and a limit head is fixedly installed on the side wall of each of the limit column racks, one of the limit heads is located inside the annular groove, and the shape of the limit head is adapted to the shape of the annular groove, and the cleaning ring is rotatably arranged on the side wall of the annular plate.

[0010] Preferably, a limiting circular groove is provided on the side wall of the cleaning ring, a limiting ring frame is fixedly installed on the side wall of the annular plate, the limiting ring frame is arranged inside the limiting circular groove, and a ball is arranged at the contact position between the limiting ring frame and the limiting circular groove; during operation, when the cleaning ring rotates due to the mutual limitation of the annular groove and the limiting head, the cleaning ring will rotate at a certain angle on the outer wall of the limiting ring frame, thereby facilitating the cleaning of the outer peripheral surface of the filter element.

[0011] Preferably, the limiting column racks are provided in multiple groups, and the multiple groups of limiting column racks are arranged in the form of a spiral line on the outside of the outer circumferential surface of the cleaning ring.

[0012] Preferably, two sliding plates are installed inside the cavity, and the two sliding plates are symmetrically arranged with respect to the cavity. Limiting grooves are provided on the surfaces of the two sliding plates, and the groove walls of the limiting grooves are provided with clamping grooves. The outer peripheral surface of the filter element is fixedly connected to two elastic clamps, and the elastic clamps are slidably arranged inside the limiting grooves.

[0013] Preferably, a spring is sleeved on the outer peripheral surface of the elastic clamp, the shape of the end of the elastic clamp is an arc shape, and the shape of the elastic clamp is matched with the shape of the clamping groove.

[0014] Preferably, a cover is rotatably provided on the side wall of the purifier body, a clamping column is provided on the side wall of the cover, and a clamping groove is provided at the corresponding position of the side wall of the purifier body and the cover.

[0015] Preferably, a recovery groove is opened inside the cavity, and the recovery groove is arranged at the edge of the filter element. A recovery plate is slidably connected inside the recovery groove. During operation, when the cleaning ring cleans the surface of the filter element from front to back, the dust on the surface of the filter element will be pushed into the recovery plate, thereby facilitating the centralized treatment of the dust after treatment.

[0016] Preferably, a slide groove adapted to the recovery plate is provided inside the purifier body, and the slide groove can facilitate the recovery plate to be pulled out.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The indoor air purifier described in the present invention, through the mutual limitation of the limit head and the annular groove, and because the cleaning ring is rotatably arranged on the side wall of the annular plate, the cleaning ring will rotate at a certain angle on the side wall of the annular plate, that is, when the cleaning ring moves on the central axis of the filter element, it will also rotate at a certain angle. Such a design improves the cleaning effect of the outermost filter screen of the filter element, can completely clean the impurities with high viscosity on the surface of the filter element, facilitates the purifier body to continue to purify the air, and improves the service life of the filter element.

[0019] 2. The indoor air purifier described in the present invention has two elastic clips located inside the card slot when the purifier is in normal use. When the entire filter element needs to be replaced after the purifier has been used for a long time, the side end of the purifier body is first opened, and then the two elastic clips are manually pressed to push the elastic clips out of the card slot. Then the staff can pull out the filter element along the limiting groove, and then the elastic clip of the new filter element can be inserted into the card slot again along the limiting groove. Such a design can facilitate the replacement of the filter element and ensure the stability of the filter element when in use, which brings beneficial effects to air purification. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the air outlet part in the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the cavity part in the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the filter element in the present invention;

[0025] Figure 5 It is a schematic diagram of the cleaning ring structure in the present invention;

[0026] Figure 6 It is a schematic diagram of the annular groove structure in the present invention;

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the cleaning ring in the present invention;

[0028] Figure 8 It is a schematic diagram of the cross-sectional structure of the main body of the purifier in the present invention;

[0029] Fig. 9 It is a schematic diagram of the structure of the limiting circular groove part in the present invention;

[0030] Fig.10 It is a schematic diagram of the structure of the cover part in the present invention;

[0031] Fig.11 It is a schematic diagram of the structure of the elastic clamp part in the present invention.

[0032] In the figure: 1. purifier body; 101. cavity; 2. air inlet; 3. air outlet; 4. filter element; 5. cleaning ring; 6. electric telescopic rod; 7. annular plate; 8. annular groove; 9. limiting column frame; 10. limiting head; 11. limiting circular groove; 12. limiting ring frame; 13. sliding plate; 14. limiting groove; 15. card slot; 16. elastic card head; 17. cover; 20. recovery slot; 21. recovery plate. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] like Figures 1 to 6As shown, an indoor air purifier described in an embodiment of the present invention comprises a purifier body 1, a side wall of the purifier body 1 is provided with an air inlet 2, a surface of the air inlet 2 is provided with a plurality of air inlet grooves, a side wall of the purifier body 1 away from the air inlet 2 is provided with an air outlet 3, a cavity 101 is provided inside the purifier body 1, a filter element 4 is provided inside the purifier body 1 and located in the cavity 101, the filter element 4 is integrally composed of multiple layers of filter screens, and the multiple layers of filter screens include a pre-filter screen, a HEPA filter screen, an activated carbon filter screen, a formaldehyde removal filter screen, etc.; a cleaning ring 5 is provided on the outer peripheral surface of the filter element 4, the inner wall of the cleaning ring 5 is in contact with the outermost filter screen surface of the filter element 4, and a driving mechanism is provided inside the purifier body 1, and the driving mechanism is used to drive the cleaning ring 5 to move along the length direction of the filter element 4;

[0035] When working, the air purifier is a device used to remove pollutants from indoor air and improve air quality. They can effectively remove or reduce a variety of harmful substances in the air, including particulate matter such as dust, pollen, PM2.5, etc., harmful gases such as formaldehyde, benzene, etc., bacteria, viruses or other microorganisms; when using the purifier body 1 in the embodiment of the present invention, the purifier body 1 is placed in a suitable position indoors, and the switch above the purifier body 1 is turned on, and then the indoor air will be introduced through the air inlet 2 and transmitted to the inside of the filter element 4 inside the cavity 101. The harmful substances in the air can be removed through the multi-layer filter element 4, and finally the relatively clean gas will be discharged from the air outlet 3;

[0036] When the filter element 4 is removing harmful impurities from the air, larger impurities and dust in the air will adhere to the surface of the outermost filter screen of the filter element 4. Excessive accumulation of impurities over a long period of time will affect the air entering the inner filter element from the outermost filter element, so it needs to be cleaned. During cleaning, the cleaning ring 5 is driven by the driving mechanism to move along the length direction of the filter element 4, which can automatically remove the dust adhered to the surface of the outermost filter screen of the filter element 4, ensuring that the subsequent internal filter element can continue to remove harmful substances from the air, and also avoiding the problem of too many impurities adhering to the outermost layer of the filter element 4, resulting in low air purification efficiency, while improving the service life of the filter element 4.

[0037] The driving mechanism includes an electric telescopic rod 6 fixedly mounted on the inner wall of the cavity 101. Two groups of electric telescopic rods 6 are arranged and are symmetrically arranged relative to the cavity 101. The telescopic ends of the two electric telescopic rods 6 are fixedly mounted with annular plates 7, and a cleaning ring 5 is arranged on the side wall of the annular plate 7. When working, in the initial state, the cleaning ring 5 is located at the edge of one end of the filter element 4. When it is necessary to deal with the dust adhered to the surface of the filter element 4, by controlling the two electric telescopic rods 6 to move synchronously, the telescopic ends of the electric telescopic rods 6 drive the annular plate 7 and the cleaning ring 5 to move. The cleaning ring 5 will move from one end edge of the filter element 4 to the other end edge, and the impurities adhered to the surface of the filter element 4 on the inner wall of the cleaning ring 5 will be cleaned. The operation is relatively convenient and does not require manual cleaning by the staff.

[0038] like Figures 2 to 10 As shown, the driving mechanism also includes an annular groove 8 opened on the outer circumference of the cleaning ring 5, and a plurality of limiting column frames 9 are fixedly installed on the cavity wall of the cavity 101. A limiting head 10 is fixedly installed on the side wall of each limiting column frame 9, and one of the limiting heads 10 is located inside the annular groove 8. The shape of the limiting head 10 is adapted to the shape of the annular groove 8. The cleaning ring 5 is rotatably arranged on the side wall of the annular plate 7, and the annular groove 8 is through on the outer circumference of the cleaning ring 5, that is, the two ends of the annular groove 8 are not blocked; when working, in the initial state, refer to the attached Figure 6 and Figure 7 As shown, one of the limit heads 10 is located inside the annular groove 8. When the cleaning ring 5 follows the annular plate 7 to move along the filter element 4, under the mutual limitation of the limit head 10 and the annular groove 8, and because the cleaning ring 5 is rotatably arranged on the side wall of the annular plate 7, the cleaning ring 5 will rotate at a certain angle on the side wall of the annular plate 7, that is, when the cleaning ring 5 moves on the central axis of the filter element 4, it will also rotate at a certain angle. Such a design improves the cleaning effect of the outermost filter screen of the filter element 4, can completely clean the impurities with high viscosity on the surface of the filter element 4, facilitates the purifier body 1 to continue to purify the air, and improves the service life of the filter element 4.

[0039] A limiting circular groove 11 is provided on the side wall of the cleaning ring 5, and a limiting ring frame 12 is fixedly installed on the side wall of the annular plate 7. The limiting ring frame 12 is arranged inside the limiting circular groove 11, and balls are arranged at the contact position between the limiting ring frame 12 and the limiting circular groove 11. During operation, when the cleaning ring 5 rotates due to the mutual limitation of the annular groove 8 and the limiting head 10, the cleaning ring 5 will rotate at a certain angle on the outer wall of the limiting ring frame 12, so that the outer peripheral surface of the filter element 4 can be easily cleaned.

[0040] The limiting column frame 9 is provided with multiple groups, and the multiple groups of limiting column frames 9 are arranged in the form of a spiral line on the outer side of the outer circumference of the cleaning ring 5, and the multiple groups of limiting column frames 9 can contact the annular groove 8 during the movement of the cleaning ring 5; when working, refer to the attached Figure 6 As shown, the limit column frames 9 are arranged on the outer side of the cleaning ring 5 in an upper and lower distribution, so that during the movement of the cleaning ring 5, it can ensure that all the limit heads 10 can always contact the annular groove 8, thereby ensuring the cleaning effect of the cleaning ring 5 on the filter element 4.

[0041] like Figures 4 to 11 As shown, two sliding plates 13 are installed inside the cavity 101, and the two sliding plates 13 are symmetrically arranged with respect to the cavity 101. The surfaces of the two sliding plates 13 are provided with limiting grooves 14, and the groove walls of the limiting grooves 14 are provided with clamping grooves 15. The outer peripheral surface of the filter element 4 is fixedly connected with two elastic clamps 16, and the elastic clamps 16 are slidably arranged inside the limiting grooves 14;

[0042] During operation, when the purifier is used normally, the two elastic clamps 16 are located inside the clamping slot 15. When the entire filter element 4 needs to be replaced after the purifier has been used for a long time, the side end of the purifier body 1 is first opened, and then the two elastic clamps 16 are manually pressed to push the elastic clamps 16 out of the clamping slot 15. Then the staff can pull the filter element 4 out along the limiting groove 14, and then the elastic clamp 16 of the new filter element 4 can be clamped into the inside of the clamping slot 15 again along the limiting groove 14. Such a design can facilitate the replacement of the filter element 4, and also ensure the stability of the filter element 4 during use, which brings beneficial effects to the purification of the air.

[0043] The outer circumferential surface of the elastic clamp 16 is sleeved with a spring, and the shape of the end of the elastic clamp 16 is arc-shaped, and the shape of the elastic clamp 16 is adapted to the shape of the slot 15; during operation, when the elastic clamp 16 moves along the wall of the limiting slot 14, the elastic clamp 16 is subjected to the pressure of the wall of the limiting slot 14, and the elastic clamp 16 will shrink to a certain extent. When the elastic clamp 16 moves to correspond to the slot 15, the filter element 4 just completely extends into the cavity 101, which is convenient for subsequent purification of the air and replacement of the filter element 4.

[0044] A cover 17 is rotatably provided on the side wall of the purifier body 1, and a clamping column is provided on the side wall of the cover 17. A clamping groove is provided at the corresponding position of the side wall of the purifier body 1 and the cover 17; when the purifier body 1 is in normal use, the cover 17 is fixed to the side wall of the purifier body 1. When the filter element 4 needs to be replaced, the cover 17 needs to be opened, and then the filter element 4 can be taken out.

[0045] A recovery groove 20 is opened inside the cavity 101, and the recovery groove 20 is arranged at the edge of the filter element 4. A recovery plate 21 is slidably connected inside the recovery groove 20; during operation, when the cleaning ring 5 cleans the surface of the filter element 4 from front to back, the dust on the surface of the filter element 4 will be pushed into the recovery plate 21, thereby facilitating the centralized treatment of the dust after treatment.

[0046] A slide groove matched with the recovery plate 21 is arranged inside the purifier body 1, and the recovery plate 21 can be easily pulled out by the slide groove.

[0047] When working, the air purifier is a device used to remove pollutants from indoor air and improve air quality. They can effectively remove or reduce a variety of harmful substances in the air, including particulate matter such as dust, pollen, PM2.5, etc., harmful gases such as formaldehyde, benzene, etc., bacteria, viruses or other microorganisms; when using the purifier body 1 in the embodiment of the present invention, the purifier body 1 is placed in a suitable position indoors, and the switch above the purifier body 1 is turned on, and then the indoor air will be introduced through the air inlet 2 and transmitted to the inside of the filter element 4 inside the cavity 101. The harmful substances in the air can be removed through the multi-layer filter element 4, and finally the relatively clean gas will be discharged from the air outlet 3;

[0048] When the filter element 4 is removing harmful impurities from the air, larger impurities and dust in the air will adhere to the surface of the outermost filter screen of the filter element 4. Excessive accumulation of impurities over a long period of time will affect the air from the outermost filter element into the inner filter element, so it needs to be cleaned. When cleaning, the cleaning ring 5 is driven by the driving mechanism to move along the length direction of the filter element 4, which can automatically remove the dust adhered to the surface of the outermost filter screen of the filter element 4, ensuring that the subsequent internal filter element can continue to remove harmful substances from the air, and also avoiding the problem of too many impurities adhering to the outermost layer of the filter element 4, resulting in low air purification efficiency, while prolonging the service life of the filter element 4;

[0049] In the initial state, the cleaning ring 5 is located at the outermost edge of the filter element 4. When the dust adhering to the surface of the filter element 4 needs to be processed, the two electric telescopic rods 6 are controlled to move synchronously. The telescopic ends of the electric telescopic rods 6 drive the annular plate 7 and the cleaning ring 5 to move. The cleaning ring 5 moves from one end edge of the filter element 4 to the other end edge. The inner wall of the cleaning ring 5 is filtered to clean the impurities adhering to the surface of the filter element 4. The operation is relatively convenient and does not require manual cleaning by the staff.

[0050] In the initial state, refer to the attached Figure 6 and Figure 7As shown, one of the stop heads 10 is located inside the annular groove 8. When the cleaning ring 5 follows the annular plate 7 and moves along the filter element 4, under the mutual limitation of the stop head 10 and the annular groove 8, and because the cleaning ring 5 is rotatably arranged on the side wall of the annular plate 7, the cleaning ring 5 will rotate at a certain angle on the side wall of the annular plate 7, that is, when the cleaning ring 5 moves on the central axis of the filter element 4, it will also rotate at a certain angle. Such a design improves the cleaning effect of the outermost filter screen of the filter element 4, can completely clean the impurities with high viscosity on the surface of the filter element 4, facilitates the purifier body 1 to continue to purify the air, and improves the service life of the filter element 4;

[0051] See attached Figure 6 As shown, the limiting column frames 9 are arranged on the outer side of the cleaning ring 5 in an upper and lower distribution, so that during the movement of the cleaning ring 5, it can ensure that all the limiting heads 10 can always contact with the annular groove 8, thereby ensuring the cleaning effect of the cleaning ring 5 on the filter element 4;

[0052] When the purifier is in normal use, the two elastic clamps 16 are located inside the card slot 15. When the purifier needs to be replaced after a long period of use, the side end of the purifier body 1 is first opened, and then the two elastic clamps 16 are manually pressed to push the elastic clamps 16 out of the card slot 15. Then the staff can pull the filter element 4 out along the limiting groove 14, and then the elastic clamp 16 of the new filter element 4 can be inserted into the card slot 15 again along the limiting groove 14. This design can be convenient for The filter element 4 can be replaced, and the stability of the filter element 4 during use is ensured, which brings beneficial effects to the purification of the air; when the elastic clamp 16 moves along the wall of the limiting groove 14, the elastic clamp 16 is subjected to the pressure of the wall of the limiting groove 14, and the elastic clamp 16 will shrink to a certain extent. When the elastic clamp 16 moves to correspond to the clamping groove 15, the filter element 4 just extends completely into the cavity 101, which is convenient for the subsequent purification of the air and the replacement of the filter element 4.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An indoor air purifier, characterized in that: The purifier comprises a purifier body (1), wherein the side wall of the purifier body (1) is provided with an air inlet (2), the surface of the air inlet (2) is provided with a plurality of air inlet grooves, the side wall of the purifier body (1) away from the air inlet (2) is provided with an air outlet (3), the interior of the purifier body (1) is provided with a cavity (101), a filter element (4) is provided inside the purifier body (1) and is located in the cavity (101); a cleaning ring (5) is provided on the outer peripheral surface of the filter element (4), the inner wall of the cleaning ring (5) is in contact with the outermost filter screen surface of the filter element (4), and a driving mechanism is provided inside the purifier body (1), the driving mechanism is used to drive the cleaning ring (5) to move along the length direction of the filter element (4); The driving mechanism comprises an electric telescopic rod (6) fixedly mounted on the inner wall of the cavity (101), the electric telescopic rod (6) being provided in two groups and being symmetrically arranged relative to the cavity (101), an annular plate (7) being fixedly mounted on the telescopic ends of the two electric telescopic rods (6), and the cleaning ring (5) being arranged on the side wall of the annular plate (7); The driving mechanism further comprises an annular groove (8) formed on the outer peripheral surface of the cleaning ring (5); a plurality of limiting column frames (9) are fixedly mounted on the cavity wall of the cavity (101); a limiting head (10) is fixedly mounted on the side wall of each limiting column frame (9); one of the limiting heads (10) is located inside the annular groove (8); the shape of the limiting head (10) matches the shape of the annular groove (8); and the cleaning ring (5) is rotatably mounted on the side wall of the annular plate (7); A limiting circular groove (11) is formed on the side wall of the cleaning ring (5), a limiting ring frame (12) is fixedly mounted on the side wall of the annular plate (7), the limiting ring frame (12) is arranged inside the limiting circular groove (11), and a ball is arranged at the contact position between the limiting ring frame (12) and the limiting circular groove (11).

2. An indoor air purifier according to claim 1, characterized in that: The limiting column frames (9) are provided in a plurality of groups, and the plurality of groups of limiting column frames (9) are arranged in a spiral shape outside the outer peripheral surface of the cleaning ring (5).

3. An indoor air purifier according to claim 1, characterized in that: Two sliding plates (13) are installed inside the cavity (101), and the two sliding plates (13) are symmetrically arranged with respect to the cavity (101) in an upper and lower direction. The surfaces of the two sliding plates (13) are provided with limit grooves (14), and the groove walls of the limit grooves (14) are provided with clamping grooves (15). The outer peripheral surface of the filter element (4) is fixedly connected with two elastic clamps (16), and the elastic clamps (16) are slidably arranged inside the limit grooves (14).

4. An indoor air purifier according to claim 3, characterized in that: The outer peripheral surface of the elastic clamp (16) is sleeved with a spring, the end of the elastic clamp (16) is in the shape of an arc, and the shape of the elastic clamp (16) is compatible with the shape of the clamping groove (15).

5. An indoor air purifier according to claim 3, characterized in that: A cover (17) is rotatably provided on the side wall of the purifier body (1), a clamping column is provided on the side wall of the cover (17), and a clamping groove is provided at corresponding positions of the side wall of the purifier body (1) and the cover (17).

6. An indoor air purifier according to claim 5, characterized in that: A recovery groove (20) is provided inside the cavity (101), the recovery groove (20) is arranged at the edge of the filter element (4), and a recovery plate (21) is slidably engaged inside the recovery groove (20).

7. An indoor air purifier according to claim 6, characterized in that: A slide groove matching the recovery plate (21) is provided inside the purifier body (1).

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