Air purification equipment

Abstract

The utility model relates to the technical field of air purification equipment, in particular to air purification equipment, and aims to solve the problem that a purification module of the existing air purification equipment is inconvenient to disassemble. Therefore, the air purification equipment comprises a shell and a purification assembly, an air return opening is formed in the shell, the purification assembly comprises a support and a purification module, the support is detachably installed on the shell, the purification module is detachably installed on the support, the purification module covers the air return opening, the support is detachably installed on the shell, and the purification module covers the air return opening. According to the air purification equipment, the purification module is detachably installed on the support and covers the air return port, and compared with the scheme that the support needs to be detached firstly and then the purification module needs to be detached from the support in the prior art, the air purification equipment can directly detach the purification module from the air purification equipment, and the replacement efficiency of the purification module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification equipment, and particularly provides an air purification equipment. Background Art

[0002] As a device that can improve air quality, air purifiers have gradually become one of the indispensable electrical appliances in people's daily lives.

[0003] Most of the existing air purifiers fixedly install the purification module inside the bracket and then install the bracket on the air return opening. When the purification module needs to be replaced, the bracket needs to be disassembled first, and then the purification module needs to be disassembled from the bracket for replacement. The replacement process of the purification module is cumbersome.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Utility Model

[0005] The utility model aims to solve the above technical problems, that is, to solve the problem that the purification module of the existing air purification equipment is inconvenient to disassemble.

[0006] In a first aspect, the utility model provides an air purification equipment, including a housing and a purification component. The housing is provided with an air return opening; the purification component includes a bracket and a purification module. The bracket is detachably installed on the housing, the purification module is detachably installed on the bracket, and the purification module covers the air return opening.

[0007] In the case of adopting the above technical solution, the air purification equipment of the utility model detachably installs the bracket on the housing, detachably installs the purification module on the bracket and covers it on the air return opening. Compared with the prior art that requires removing the bracket first and then removing the purification module from the bracket, the air purification equipment of the utility model can directly disassemble the purification module from the air purification equipment, improving the replacement efficiency of the purification module.

[0008] In a preferred technical solution of the above air purification equipment, the housing is provided with a first insertion interface and a second insertion interface. The first insertion interface and the second insertion interface are respectively located on both sides of the air return opening. The bracket includes a bracket body, a first insertion portion provided at the first end of the bracket body, and a second insertion portion provided at the second end of the bracket body. The first insertion portion and the second insertion portion are oppositely arranged and respectively inserted into the first insertion interface and the second insertion interface.

[0009] In the case of adopting the above technical solution, the utility model realizes the detachable installation of the bracket by setting the mutually matching first insertion portion, second insertion portion, first insertion interface and second insertion interface, with a simple structure and convenient installation and disassembly.

[0010] In the preferred technical solution of the above air purification device, the purification module includes a main purification module, a first auxiliary purification module disposed at the first end of the main purification module, and a second auxiliary purification module disposed at the second end of the main purification module. The first auxiliary purification module and the second auxiliary purification module are disposed opposite to each other. The main purification module is installed on the bracket body, and the first auxiliary purification module and the second auxiliary purification module are respectively installed on the first insertion portion and the second insertion portion.

[0011] In the case of adopting the above technical solution, by setting the purification module as the main purification module, the first auxiliary purification module and the second auxiliary purification module disposed opposite to the bracket, the present utility model makes the shape of the purification module more adaptable to the bracket and the installation more convenient.

[0012] In the preferred technical solution of the above air purification device, the housing includes an inner housing, a first outer housing on one side of the inner housing, and a second outer housing on the other side of the inner housing. A gap is provided between the first outer housing and the inner housing to form the first insertion port, and a gap is provided between the second outer housing and the inner housing to form the second insertion port. The air return port is provided in the inner housing. The first outer housing is provided with a plurality of first ventilation holes at a position corresponding to the first auxiliary purification module and / or the second outer housing is provided with a plurality of second ventilation holes at a position corresponding to the second auxiliary purification module.

[0013] In the case of adopting the above technical solution, by forming the first insertion port between the first outer housing and the inner housing and forming the second insertion port between the second outer housing and the inner housing, the structure is simple, and the processing and installation are convenient. By providing a plurality of first ventilation holes and / or a plurality of second ventilation holes, the contact area between the purification module and the air is increased, thereby improving the purification efficiency.

[0014] In the preferred technical solution of the above air purification device, the first outer housing is provided with a first abutting surface at the inlet of the first insertion port, and the first end surface of the main purification module is attached to the first abutting surface; and / or the second outer housing is provided with a second abutting surface at the inlet of the second insertion port, and the second end surface of the main purification module is attached to the second abutting surface.

[0015] In the case of adopting the above technical solution, by providing the first abutting surface abutted against the first end surface of the main purification module and the second abutting surface abutted against the second end surface of the main purification module, the main purification module can be abutted against the housing, thereby increasing the sealing performance of the main purification module.

[0016] In the preferred technical solution of the above air purification device, the first outer casing is provided with a first groove at a position close to the first abutting surface, and the first groove communicates with the first abutting surface; and / or the second outer casing is provided with a second groove at a position close to the second abutting surface, and the second groove communicates with the second abutting surface.

[0017] In the case of adopting the above technical solution, by providing the first groove communicating with the first abutting surface and the second groove communicating with the second abutting surface in the present utility model, the purification component can be disassembled by pulling the first groove and the second groove, and the structure is simple and the operation is convenient.

[0018] In the preferred technical solution of the above air purification device, the outer surface of the main purification module is aligned with the outer surface of the casing.

[0019] In the case of adopting the above technical solution, by aligning the outer surface of the main purification module with the outer surface of the casing in the present utility model, the purification module and the casing are more integrated and the appearance is more beautiful.

[0020] In the preferred technical solution of the above air purification device, a first guiding structure is provided in the first insertion interface and / or the second insertion interface, and a second guiding structure is provided on the bracket body at a position corresponding to the first guiding structure, and the first guiding structure and the second guiding structure can be in guiding cooperation when the bracket is installed.

[0021] In the case of adopting the above technical solution, by providing the mutually cooperating first guiding structure and second guiding structure in the present utility model, the installation of the bracket is smoother and more convenient.

[0022] In the preferred technical solution of the above air purification device, one of the first guiding structure and the second guiding structure is a guiding groove extending along the insertion direction, and the other of the first guiding structure and the second guiding structure is a guiding rib extending along the insertion direction, and the guiding rib is adapted to the guiding groove.

[0023] In the case of adopting the above technical solution, by setting the first guiding structure and the second guiding structure as a guiding groove and a guiding rib in the present utility model, the structure is simple and the processing and installation are convenient.

[0024] In the preferred technical solution of the above air purification device, clamping grooves are provided at the top and bottom of the first insertion portion and the second insertion portion, and clamping tongues are provided at positions of the first insertion interface and the second insertion interface corresponding to the clamping grooves, and the clamping tongues can be clamped in the clamping grooves.

[0025] In the case of adopting the above technical solution, in the present utility model, by providing a mating card slot and a tongue on the first insertion part, the second insertion part, the first insertion port and the second insertion port, the bracket can be clamped and fixed on the housing, with a simple structure and convenient installation. Description of the Drawings

[0026] The preferred embodiments of the present utility model will be described below with reference to the drawings, in which:

[0027] Figure 1 is a schematic structural diagram of the air purification device of the present utility model;

[0028] Figure 2 is an exploded structural view of the air purification device of the present utility model;

[0029] Figure 3 is a schematic structural view of the housing of the air purification device of the present utility model Figure 1 ;

[0030] Figure 4 is a schematic structural view of the housing of the air purification device of the present utility model Figure 2 ;

[0031] Figure 5 is a schematic structural diagram of the bracket of the air purification device of the present utility model;

[0032] Figure 6 is a schematic structural diagram of the purification module of the air purification device of the present utility model.

[0033] List of Reference Numerals:

[0034] 1, housing; 11, inner housing; 12, first outer housing; 13, second outer housing; 14, first insertion port; 15, second insertion port; 16, opening; 17, air return port; 18, guiding rib; 19, tongue; 121, first groove; 122, first abutting surface; 123, first ventilation hole; 131, second groove; 132, second abutting surface;

[0035] 2, bracket; 21, bracket body; 22, first insertion part; 23, second insertion part; 24, card slot; 211, guiding groove;

[0036] 3, purification module; 31, main purification module; 32, first auxiliary purification module; 33, second auxiliary purification module; 311, first end face; 312, second end face. Detailed Embodiments

[0037] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention. For example, although the specific embodiments described below are described in conjunction with an air purifier, the technical solutions of the present invention are also applicable to other air purification devices, such as air conditioners, etc. Such adjustments and changes to the application object do not deviate from the principle and scope of the present invention and should all be limited within the protection scope of the present invention.

[0038] It should be noted that in the description of the present invention, the terms "inner", "outer", "upper", "lower", "top", "bottom", "left", "right" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "connected", "installed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] Based on the problem pointed out in the background technology that the purification module of the existing air purification device is inconvenient to disassemble, the present invention provides an air purifier, aiming to detachably install the bracket on the housing, detachably install the purification module on the bracket and cover the air return opening. Compared with the prior art in which the bracket needs to be removed first and then the purification module is removed from the bracket, the air purification device of the present invention can directly detach the purification module from the air purification device, improving the replacement efficiency of the purification module.

[0041] Specifically, as Figures 1 to 6 shown, the air purifier of the present invention includes a housing 1 and a purification assembly. The housing 1 is provided with an air return opening 17. The purification assembly includes a bracket 2 and a purification module 3. The bracket 2 is detachably installed on the housing 1, the purification module 3 is detachably installed on the bracket 2, and the purification module 3 covers the air return opening 17.

[0042] Exemplarily, as Figures 1 to 6As shown, an opening 16 is provided on the housing 1 of the present utility model, and an air return opening 17 is arranged within the opening 16. The bracket 2 can be detachably installed at the opening 16 of the housing 1, and the purification module 3 can be detachably installed on the side of the bracket 2 away from the opening 16. Moreover, the purification module 3 can cover the opening 16. Compared with the prior art solution that requires first removing the bracket 2 and then removing the purification module 3 from the bracket 2, the air purifier of the present utility model can directly detach the purification module 3 from the air purifier, improving the replacement efficiency of the purification module 3.

[0043] It should be noted that the present utility model does not limit the detachable installation method of the bracket 2. For example, those skilled in the art can insert the bracket 2 into the housing 1 for installation or fasten it to the outside of the housing 1, etc. Such adjustments and changes to the specific detachable installation method of the bracket 2 do not deviate from the principle and scope of the present utility model and should all be limited within the protection scope of the present utility model.

[0044] It also should be noted that the present utility model does not limit the detachable installation method of the purification module 3. For example, those skilled in the art can install the purification module 3 on the bracket 2 through a card slot or install it on the bracket 2 by means of glue, etc. Such adjustments and changes to the specific detachable installation method of the purification module 3 do not deviate from the principle and scope of the present utility model and should all be limited within the protection scope of the present utility model.

[0045] Preferably, as Figures 1 to 5 shown, a first insertion interface 14 and a second insertion interface 15 are provided on the housing 1 of the present utility model. The first insertion interface 14 and the second insertion interface 15 are respectively located on both sides of the air return opening 17. The bracket 2 includes a bracket body 21, a first insertion portion 22 provided at the first end of the bracket body 21, and a second insertion portion 23 provided at the second end of the bracket body 21. The first insertion portion 22 and the second insertion portion 23 are arranged oppositely and are respectively inserted into the first insertion interface 14 and the second insertion interface 15.

[0046] Exemplarily, as Figures 1 to 5 shown, the bracket body 21 of the present utility model is arranged in the vertical direction. The first insertion portion 22 and the second insertion portion 23 are vertically arranged oppositely at the left and right ends of the bracket body 21. The bracket 2 is integrally U-shaped. The first insertion interface 14 and the second insertion interface 15, which are arranged oppositely to the first insertion portion 22 and the second insertion portion 23 respectively, are provided on the left and right sides within the opening 16 of the housing 1. The first insertion portion 22 and the second insertion portion 23 can be respectively inserted into the first insertion interface 14 and the second insertion interface 15, and the bracket body 21 can be covered and installed on the opening 16.

[0047] Preferably, as Figures 5 to 6As shown in the figure, the purification module 3 of the present utility model includes a main purification module 31, a first auxiliary purification module 32 disposed at the first end of the main purification module 31, and a second auxiliary purification module 33 disposed at the second end of the main purification module 31. The first auxiliary purification module 32 and the second auxiliary purification module 33 are disposed opposite to each other. The main purification module 31 is installed on the bracket body 21, and the first auxiliary purification module 32 and the second auxiliary purification module 33 are respectively installed on the first insertion portion 22 and the second insertion portion 23.

[0048] Exemplarily, as Figures 5 to 6 shown, the main purification module 31 of the present utility model is disposed in the vertical direction, the first auxiliary purification module 32 and the second auxiliary purification module 33 are disposed vertically opposite to each other at the left and right ends of the bracket body 21, the purification module 3 is integrally U-shaped, the main purification module 31 is installed on the outer side of the bracket body 21 (the side away from the opening 16), and the first auxiliary purification module 32 and the second auxiliary purification module 33 are respectively installed on the outer sides of the first insertion portion 22 and the second insertion portion 23 (the side away from the opening 16).

[0049] That is to say, the shape of the purification module 3 is adapted to that of the bracket 2, and the purification module 3 can be detachably installed on the outer side of the bracket 2 (the side away from the opening 16).

[0050] Preferably, as Figures 1 to 4 shown, the housing 1 of the present utility model includes an inner housing 11, a first outer housing 12 located on one side of the inner housing 11, and a second outer housing 13 located on the other side of the inner housing 11. A gap is provided between the first outer housing 12 and the inner housing 11 to form a first insertion port 14, and a gap is provided between the second outer housing 13 and the inner housing 11 to form a second insertion port 15. The air return port 17 is provided in the inner housing 11. The first outer housing 12 is provided with a plurality of first ventilation holes 123 at a position corresponding to the first auxiliary purification module 32, and the second outer housing 13 is provided with a plurality of second ventilation holes at a position corresponding to the second auxiliary purification module 33.

[0051] Exemplarily, as Figures 1 to 4 shown, the inner housing 11 of the present utility model is disposed in the opening 16, the first outer housing 12 and the second outer housing 13 are respectively located on the left and right sides of the inner housing 11, the opening 16 is provided between the first outer housing 12 and the second outer housing 13, the gap between the first outer housing 12 and the inner housing 11 forms the first insertion port 14, the gap between the second outer housing 13 and the inner housing 11 forms the second insertion port 15, the air return port 17 is provided at the upper part of the inner housing 11, the first outer housing 12 is provided with a plurality of first ventilation holes 123 arranged at intervals at a position corresponding to the first auxiliary purification module 32, and the second outer housing 13 is provided with a plurality of second ventilation holes arranged at intervals at a position corresponding to the second auxiliary purification module 33 (not shown in the figure).

[0052] It should be noted that the present utility model does not limit the number and shape of the first ventilation holes 123 and the second ventilation holes. For example, those skilled in the art can set the first ventilation holes 123 and the second ventilation holes to be circular or square, and can also reasonably set the number of the first ventilation holes 123 and the second ventilation holes according to the area sizes of the first housing 12 and the second housing 13, etc. Such adjustments and changes to the specific number and shape of the first ventilation holes 123 and the second ventilation holes do not deviate from the principle and scope of the present utility model, and should all be limited within the protection scope of the present utility model.

[0053] It should also be noted that the present utility model does not limit the setting principle of the first ventilation holes 123 and the second ventilation holes. For example, those skilled in the art can set the first ventilation holes 123 or the second ventilation holes alone, or can also set the first ventilation holes 123 and the second ventilation holes at the same time, etc. Such adjustments and changes to the specific setting principle of the first ventilation holes 123 and the second ventilation holes do not deviate from the principle and scope of the present utility model, and should all be limited within the protection scope of the present utility model.

[0054] Certainly, the present utility model preferably sets the first ventilation holes 123 and the second ventilation holes at the same time, which can increase the contact area between the purification module 3 and the air and improve the purification efficiency.

[0055] Preferably, as Figure 4 and Figure 6 shown, the first housing 12 of the present utility model is provided with a first abutting surface 122 at the inlet of the first insertion port 14, and the first end surface 311 of the main purification module 31 is attached to the first abutting surface 122. The second housing 13 is provided with a second abutting surface 132 at the inlet of the second insertion port 15, and the second end surface 312 of the main purification module 31 is attached to the second abutting surface 132.

[0056] Exemplarily, as Figure 4 and Figure 6 shown, the first housing 12 of the present utility model is provided with a first abutting surface 122 on the side facing the purification module 3. A first end surface 311 corresponding to the first abutting surface 122 is provided at the connection between the main purification module 31 and the first auxiliary purification module 32. The second housing 13 is provided with a second abutting surface 132 on the side facing the purification module 3. A second end surface 312 corresponding to the second abutting surface 132 is provided at the connection between the main purification module 31 and the second auxiliary purification module 33. When the first insertion portion 22 and the second insertion portion 23 are respectively inserted into the first insertion port 14 and the second insertion port 15, the first end surface 311 and the second end surface 312 of the main purification module 31 can respectively abut and be attached to the first abutting surface 122 and the second abutting surface 132.

[0057] That is to say, the first auxiliary purification module 32 and the second auxiliary purification module 33 can be inserted into the housing 1 along with the first insertion part 22 and the second insertion part 23. The thickness of the main purification module 31 is greater than that of the first auxiliary purification module 32 and the second auxiliary purification module 33. As a result, a first end face 311 and a second end face 312 can be formed at the connection between the main purification module 31 and the first auxiliary purification module 32 and at the connection between the main purification module 31 and the second auxiliary purification module 33. Through such an arrangement, the airtightness of the air purifier can be increased.

[0058] It should be noted that the present invention does not limit the setting principle of the first end face 311 and the second end face 312 of the main purification module 31. For example, those skilled in the art can set the first end face 311 or the second end face 312 separately, or can set both the first end face 311 and the second end face 312 at the same time, etc. Such adjustments and changes to the specific setting principle of the first end face 311 and the second end face 312 do not deviate from the principle and scope of the present invention and should all be limited within the protection scope of the present invention.

[0059] Certainly, the present invention preferably sets both the first end face 311 and the second end face 312 on the main purification module 31, which can improve the airtightness of the air purifier.

[0060] Preferably, as Figures 1 to 4 shown, the first housing 12 of the present invention is provided with a first groove 121 at a position close to the first abutting surface 122, and the first groove 121 communicates with the first abutting surface 122. The second housing 13 is provided with a second groove 131 at a position close to the second abutting surface 132, and the second groove 131 communicates with the second abutting surface 132.

[0061] Exemplarily, as Figures 1 to 4 shown, the first housing 12 of the present invention is provided with a first groove 121 communicating with the first abutting surface 122 at a position close to the first abutting surface 122, and the second housing 13 is provided with a second groove 131 communicating with the second abutting surface 132 at a position close to the second abutting surface 132. By providing the first groove 121 and the second groove 131, the purification component can be disassembled by pulling the first groove 121 and the second groove 131, and the operation is convenient.

[0062] It should be noted that the present invention does not limit the setting principle of the first groove 121 and the second groove 131. For example, those skilled in the art can set the first groove 121 or the second groove 131 separately, or can set both the first groove 121 and the second groove 131 at the same time, etc. Such adjustments and changes to the specific setting principle of the first groove 121 and the second groove 131 do not deviate from the principle and scope of the present invention and should all be limited within the protection scope of the present invention.

[0063] Certainly, the present utility model preferably sets the first groove 121 and the second groove 131 simultaneously, which can make the disassembly of the purification component more convenient.

[0064] Preferably, as Figure 1 shown, the outer surface of the main purification module 31 of the present utility model is aligned with the outer surface of the housing 1.

[0065] That is to say, the outer surface of the main purification module 31 and the outer surface of the housing 1 are in the same plane. Through such a setting, the purification module 3 and the housing 1 are more integrated, and the appearance is more beautiful.

[0066] Preferably, as Figures 3 to 5 shown, the first insertion interface 14 and the second insertion interface 15 of the present utility model are provided with a first guiding structure, and the bracket body 21 is provided with a second guiding structure at a position corresponding to the first guiding structure. The first guiding structure and the second guiding structure can be in guiding cooperation when the mounting bracket 2 is installed.

[0067] That is to say, by setting the mutually cooperating first guiding structure and the second guiding structure, the installation and disassembly of the purification component can be made more convenient.

[0068] Preferably, as Figures 3 to 5 shown, one of the first guiding structure and the second guiding structure is a guiding groove 211 extending along the insertion direction, and the other of the first guiding structure and the second guiding structure is a guiding rib 18 extending along the insertion direction. The guiding rib 18 is adapted to the guiding groove 211.

[0069] Exemplarily, as Figures 3 to 5 shown, the bottoms of the first insertion interface 14 and the second insertion interface 15 of the present utility model are both provided with guiding ribs 18 extending along the insertion direction. The guiding ribs 18 are arranged close to the inner housing 11. The bracket body 21 is provided with guiding grooves 211 adapted to the guiding ribs 18. When the bracket 2 is inserted into the first insertion interface 14 and the second insertion interface 15, the guiding ribs 18 can enter the guiding grooves 211, and the bracket 2 can move along the guiding ribs 18, so that the installation and disassembly work of the bracket 2 can be carried out more precisely and smoothly.

[0070] It should be noted that the present utility model does not limit the setting positions of the first guiding structure and the second guiding structure. For example, those skilled in the art can separately set the first guiding structure and the second guiding structure on the first insertion interface 14 and the bracket body 21, or separately on the second insertion interface 15 and the bracket body 21. They can also simultaneously set the first guiding structure and the second guiding structure on the first insertion interface 14 and the bracket body 21 as well as on the second insertion interface 15 and the bracket body 21, and so on. Such adjustments and changes to the specific setting positions of the first guiding structure and the second guiding structure do not deviate from the principle and scope of the present utility model and should all be limited within the protection scope of the present utility model.

[0071] Certainly, the present utility model preferably sets the first guiding structure and the second guiding structure on the first insertion interface 14 and the bracket body 21 as well as on the second insertion interface 15 and the bracket body 21 simultaneously, which is more convenient for the installation and disassembly of the bracket 2.

[0072] Preferably, as Figure 4 and Figure 5 shown, clamping grooves 24 are provided at both the top and bottom of the first insertion part 22 and the second insertion part 23 of the present utility model, and clamping tongues 19 are provided at positions corresponding to the clamping grooves 24 on the first insertion interface 14 and the second insertion interface 15. The clamping tongues 19 can be clamped in the clamping grooves 24.

[0073] Exemplarily, as Figure 4 and Figure 5 shown, clamping grooves 24 are provided at both the top and bottom of the first insertion part 22 and the second insertion part 23 of the present utility model, and clamping tongues 19 opposite to the clamping grooves 24 are also provided at the top and bottom of the first insertion interface 14 and the second insertion interface 15. When the bracket 2 is inserted into the first insertion part 22 and the second insertion part 23, the clamping tongues 19 can be clamped into the clamping tongues 19, thereby clamping the bracket 2 to the housing 1.

[0074] Those skilled in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims of the present application, any one of the claimed embodiments can be used in any combination.

[0075] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.

Claims

1. An air purification device, characterized in that: Including shell and purification components, The shell is provided with a return air outlet; the purification assembly includes a bracket and a purification module, the bracket is detachably mounted on the shell, the purification module is detachably mounted on the bracket, and the purification module covers the return air outlet; The housing is provided with a first plug interface and a second plug interface, the first plug interface and the second plug interface are respectively located on both sides of the return air outlet, the bracket comprises a bracket body, a first insertion portion arranged at a first end of the bracket body, and a second insertion portion arranged at a second end of the bracket body, the first insertion portion and the second insertion portion are arranged opposite to each other and are respectively inserted into the first plug interface and the second plug interface; The purification module includes a main purification module, a first auxiliary purification module arranged at a first end of the main purification module, and a second auxiliary purification module arranged at a second end of the main purification module, the first auxiliary purification module and the second auxiliary purification module are arranged opposite to each other, the main purification module is installed on the bracket body, and the first auxiliary purification module and the second auxiliary purification module are respectively installed on the first insertion part and the second insertion part.

2. The air purification device according to claim 1, characterized in that: The shell includes an inner shell, a first outer shell located on one side of the inner shell, and a second outer shell located on the other side of the inner shell, a gap is set between the first outer shell and the inner shell to form the first plug interface, a gap is set between the second outer shell and the inner shell to form the second plug interface, the return air outlet is arranged on the inner shell, and the first outer shell is provided with a plurality of first air holes at a position corresponding to the first auxiliary purification module and / or the second outer shell is provided with a plurality of second air holes at a position corresponding to the second auxiliary purification module.

3. The air purification device according to claim 2, characterized in that: The first outer shell is provided with a first abutment surface at the entrance of the first plug interface, and the first end surface of the main purification module is in contact with the first abutment surface; and / or The second outer shell is provided with a second abutting surface at the inlet of the second plug interface, and the second end surface of the main purification module is in contact with the second abutting surface.

4. The air purification device according to claim 3, characterized in that: The first outer shell is provided with a first groove at a position close to the first abutting surface, and the first groove is communicated with the first abutting surface; and / or The second outer shell is provided with a second groove near the second abutting surface, and the second groove is communicated with the second abutting surface.

5. The air purification device according to claim 1, characterized in that: An outer surface of the main purification module is aligned with an outer surface of the housing.

6. The air purification device according to claim 1, characterized in that: A first guide structure is provided in the first plug interface and / or the second plug interface, and a second guide structure is provided in the bracket body at a position corresponding to the first guide structure. The first guide structure and the second guide structure can cooperate in guiding when the bracket is installed.

7. The air purification device according to claim 6, characterized in that: One of the first guide structure and the second guide structure is a guide groove extending along the insertion direction, and the other of the first guide structure and the second guide structure is a guide rib extending along the insertion direction, and the guide rib is adapted to the guide groove.

8. The air purification device according to any one of claims 1 to 7, characterized in that: The top and bottom of the first insertion part and the second insertion part are both provided with card slots, and the first plug interface and the second plug interface are provided with card tongues at positions corresponding to the card slots, and the card tongues can be stuck in the card slots.

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