Air purifier

Abstract

The utility model relates to an air purifier. The air purifier comprises a shell, a filter element and a fan, the shell comprises a main shell body and an air outlet cover installed on the main shell body, and the filter element is arranged in the main shell body; wherein the main shell comprises an air inlet side wall and a side cover, the air inlet side wall is provided with an air inlet, the side cover is installed on the air inlet side wall, the side cover is arranged on the outer side of the air inlet and covers the air inlet, and an air inlet gap communicated with the air inlet is formed between the edge of the side cover and the air inlet side wall. The air purifier has the advantages of being high in air inlet efficiency and easy to clean.

Description

Technical Field

[0001] The present application relates to the field of air purifiers, and in particular to an air intake structure of an air purifier. Background Art

[0002] The air purifier can inhale polluted air under the action of the fan, and filter out pollutants such as dust and odor particles in the air through the filter element arranged inside its shell, thereby obtaining clean air, which is beneficial to improving the cleanliness of the air.

[0003] In the prior art, a plurality of tiny through holes are usually provided on the shell to realize the air intake function. This air intake structure has the following problems: first, after long-term use, pollutants are easily attached to the through holes, making cleaning difficult; second, because the through holes are easily flared when the shell is formed, and pollutants accumulate in the tiny through holes, the through holes are easily blocked, the air intake effect is low, and the purification efficiency is affected. Utility Model Content

[0004] In order to at least partially solve the problems of the prior art, an embodiment of the present utility model discloses an air purifier, which includes a shell, a filter element and a fan, the shell includes a main shell and an air outlet cover installed on the main shell, and the filter element is arranged in the main shell; wherein, the main shell includes an air inlet side wall provided with an air inlet and a side cover installed on the air inlet side wall, the side cover is arranged on the outside of the air inlet and covers the air inlet, and an air inlet gap connected to the air inlet is formed between the edge of the side cover and the air inlet side wall.

[0005] In the above technical solution, an air inlet gap is formed between the air inlet side wall of the main shell and the side cover installed on the air inlet side wall. Under the action of the fan, external air enters the interior of the main shell from the air inlet gap and air inlet with a larger area and is filtered by the filter element. This air inlet structure is conducive to improving the air inlet efficiency.

[0006] Preferably, the side cover is spaced apart from the air inlet side wall, and the air inlet gap is formed along the entire edge of the side cover to further improve the air intake efficiency.

[0007] According to a specific embodiment of the present invention, at least a portion of the air inlet side wall is configured to be recessed toward the inner side of the main shell, and the cover plate of the side cover is at least partially arranged in the recessed portion of the air inlet side wall in its thickness direction, which not only reduces the volume of the air purifier, but also makes its appearance more beautiful.

[0008] According to a specific embodiment of the present invention, a buckle is provided on the surface of the side cover facing the air inlet side wall, and a slot is provided on the air inlet side wall for engaging with the buckle. A buckle connection is formed between the side cover and the air inlet side wall, facilitating assembly and disassembly of the side cover.

[0009] Furthermore, the side of the slot is provided with a flange protruding toward the side cover, and the surface of the side cover facing the air inlet side wall is provided with an abutment protrusion abutting against the flange and the air inlet side wall to prevent the side cover from shaking, and can also guide the installation of the side cover and limit the distance between the cover plate of the side cover and the air inlet side wall.

[0010] According to a specific embodiment of the present invention, the main shell is a rectangular shell; one of the side surfaces of the main shell is provided with an opening for installing / removing the filter element and a door cover is detachably installed to cover the opening, and at least one of the other three side surfaces of the main shell is provided with the air inlet side wall and the side cover.

[0011] Furthermore, an air inlet hole is provided on the door cover, and the area of ​​the air inlet is larger than the air inlet hole.

[0012] According to a specific embodiment of the present utility model, an inner frame is provided in the main shell, and the inner frame has a limiting portion that abuts against the outer peripheral surface of the filter element to locate the installation position of the filter element; a purification cavity is formed between the top wall of the inner frame and the bottom wall of the main shell, and the axial ends of the filter element are respectively pressure-abutted against the top wall and the bottom wall to fix the filter element.

[0013] Furthermore, a fan box is provided above the inner frame, and the fan box has a hollow air collecting hood connected to the purification cavity, and at least a part of the fan is installed in the air collecting hood to improve air suction efficiency.

[0014] According to a specific embodiment of the present invention, the air outlet cover includes an air outlet structure located on the top thereof and / or arranged on the side wall thereof, and the air outlet structure includes an air outlet grid and / or an air outlet hole.

[0015] In order to more clearly illustrate the purpose, technical solutions and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural diagram of the air purifier in the embodiment;

[0017] Figure 2 is a first exploded structural diagram of the air purifier in the embodiment;

[0018] Figure 3 is a second exploded structural diagram of the air purifier in the embodiment;

[0019] Figure 4 is a third exploded structural diagram of the air purifier in the embodiment;

[0020] Figure 5 is a cross-sectional structural diagram of an air purifier in an embodiment;

[0021] Figure 6 is a structural diagram of the main housing in the embodiment;

[0022] Figure 7 This is a structural diagram of the inner frame in the embodiment;

[0023] Figure 8 1 is a structural diagram of the fan box in the embodiment. DETAILED DESCRIPTION

[0024] In the following description, many specific details are explained in combination with the embodiments to facilitate a full understanding of the present invention. However, it should be understood that the following embodiments and detailed descriptions are only for illustrative purposes and do not limit the scope of protection of the present invention.

[0025] like Figures 1 to 6 As shown, the air purifier of the embodiment includes a housing, a filter element 20 and a fan 31. The housing includes a main housing 11 and an air outlet cover 12 installed on the main housing 11. The filter element 20 is arranged in the main housing 11. The bottom of the main housing 11 is provided with a base 13, as shown in FIG. Figure 5 As shown, rollers 14 are installed on the base 13 to facilitate the movement of the air purifier.

[0026] For example, the main housing 11 is a rectangular housing. Figure 3 As shown, one side of the main housing 11 is provided with an opening 111a for installing / removing the filter element 20, and a door cover 111b for covering the opening 111a is detachably installed. Figure 1 As shown, the door cover 111b may be provided with an air inlet hole 111c, through which external air can enter the interior of the main housing 11 under the action of the fan 31. The shape of the air inlet hole 111c can be circular, strip-shaped, oval, etc., and the present invention does not impose any restrictions on this. It is easy to understand that an air inlet gap can also be provided between the edge of the door cover 111b and the main housing 11. That is, air can enter the side of the main housing 11 provided with the opening 111a through the air inlet hole 111c, or through the air inlet gap between the edge of the door cover 111b and the main housing 11, or a combination of the two air inlet methods can be used. The door cover 111b and the main housing 11 can be connected by a detachable connection structure such as a snap connection or screw fixation.

[0027] Furthermore, at least one side of the main housing 11 is provided with an air inlet 112a and a side cover 113 is installed to cover the air inlet 112a. The area of ​​the air inlet 112a is larger than the air inlet hole 111c. For example, Figure 4As shown, the other three sides of the main shell 11 are provided with an air inlet side wall 112 and a side cover 113 installed on the air inlet side wall 112. The air inlet side wall 112 is provided with an air inlet 112a. The side cover 113 is arranged on the outside of the air inlet 112a and covers the air inlet 112a. An air inlet gap 114 connected to the air inlet 112a is formed between at least part of the edge of the side cover 113 and the air inlet side wall 112.

[0028] During operation, external air, driven by the fan 31, sequentially enters the main housing 11 through the relatively large air inlet gap 114 and the air inlet 112a. This air inlet structure prevents contaminants from clogging it, thereby improving air intake efficiency. Preferably, the side cover 113 is spaced from the air inlet side wall 112, and the air inlet gap 114 is formed along the entire edge of the side cover 113 to further improve air intake efficiency.

[0029] Preferably, at least a portion of the air inlet side wall 112 is recessed toward the inner side of the main housing 11, and the cover plate 113a of the side cover 113 is at least partially disposed in the recessed portion 112b of the air inlet side wall 112 in its thickness direction, so as to reduce the volume of the air purifier and make the product appearance more beautiful. Figure 4 As shown, the recessed portion 112b can be rectangular, the air inlet 112a is disposed in the recessed portion 112b, the outer shape of the side cover 113 is adapted to the recessed portion 112b, and the projection of the side cover 113 in its thickness direction is located within the outer contour of the recessed portion 112b. The recessed portion 112b and the side cover 113 can also be other shapes such as circular.

[0030] The side cover 113 and the air inlet side wall 112 can be secured together using a snap-fit ​​connection structure, but this is not limiting. For example, screws or other fixing methods may also be used. For example, the surface of the side cover 113 / cover plate 113a facing the air inlet side wall 112 is provided with multiple snaps 113b, and the air inlet side wall 112 is provided with corresponding slots 112c that engage with the snaps 113b. The use of a detachable connection structure, such as a snap-fit ​​connection, between the side cover 113 and the air inlet side wall 112 facilitates assembly and disassembly of the side cover 113 and facilitates removal and cleaning of the side cover 113. The number of snaps 113b is preferably four, distributed in a rectangular pattern.

[0031] The side of the slot 112c is provided with a flange 112e protruding toward the side cover 113, and the surface of the side cover 113 / cover plate 113a facing the air inlet side wall 112 is provided with an abutment protrusion 113d abutting against the flange 112e and the air inlet side wall 112, and the abutment protrusion 113d is roughly "┐"-shaped and is located next to the buckle 113b; the abutment protrusion 113d abuts against the air inlet side wall 112 at the end of the protruding direction, and the side of the abutment protrusion 113d abuts against the flange 112e to prevent the side cover 113 from shaking, and can also guide the installation of the side cover 113 and limit the distance between the cover plate 113a of the side cover 113 and the air inlet side wall 112.

[0032] Each air inlet side wall 112 may be provided with multiple air inlets 112a. The total area of ​​the multiple air inlets 112a preferably accounts for at least half of the total area of ​​the air inlet side wall 112, but this is not limited to this. Support portions 112d are preferably provided between the multiple air inlets 112a to support the side cover 113 / cover plate 113a, thereby enhancing the structural strength of the side cover 113. Reinforcing ribs 113c may also be provided on the inner surface of the side cover 113 / cover plate 113a to enhance the structural strength of the side cover 113 / cover plate 113a. It should be noted that the provision of the support portions 112d is not required.

[0033] Combine Figure 3 、 Figure 6 and Figure 7 As shown, an inner frame 15 for positioning the filter element 20 is provided in the main housing 11. The inner frame 15 is roughly U-shaped, and its side walls are hollowed out to increase the contact area between the filter element 20 and the air to be purified and to facilitate air flow. The open end 150 of the inner frame 15 is docked with / facing the opening 111a for installing / removing the filter element 20. When the filter element 20 is installed, it can be pushed into the inner frame 15 from the opening 111a. The top wall 153 of the inner frame 15 is arranged relative to the bottom wall 115 of the main housing 11 in the height direction, and a purification cavity for accommodating the filter element 20 is formed therebetween. The axial ends of the filter element 20 are respectively in pressure contact with the top wall 153 and the bottom wall 115, thereby preventing the filter element 20 from shaking.

[0034] For example, the filter element 20 is a generally cylindrical structure, and an air flow hole 154 is provided on the top wall 153 of the inner frame 15, and the air flow hole 154 is directly opposite to the central axis hole of the filter element 20. The inner frame 15 has one or more limiting parts that abut against the outer peripheral surface of the filter element 20 to locate the installation position of the filter element 20. Figure 7 As shown, the stopper may be a curved wall 151 that matches the outer shape of the filter element 20. The filter element 20 is installed in place when it is pushed into the inner frame 15 and abuts the curved wall 151. A clearance hole 152 is provided on the curved wall 151 to increase the contact area between the filter element 20 and the air, thereby fully utilizing the filtering capacity of the filter element 20.

[0035] In the embodiment, Figure 3 As shown, the filter element 20 comprises a filter body 21, a lower cover 22, and an upper cover 23. The filter body 21 is made of a porous material with filtering / adsorption functions. The lower cover 22 and the upper cover 23 are respectively connected to the two axial ends of the filter body 21. When the filter element 20 is installed in the main housing 11, the lower cover 22 and the upper cover 23 respectively abut against the bottom wall 115 of the main housing 11 and the top wall 153 of the inner frame 15 with a predetermined pressure, squeezing and deforming the filter body 21 in the height direction and fixing the position of the filter element 20. Air is purified by passing through the filter element 20 radially from the outside to the inside.

[0036] A fan assembly 30 is provided above the inner frame 15. The fan assembly 30 includes a fan 31 and a fan box 32. The fan box 32 has a hollow air collecting cover 321 (see FIG. 1 ) that is connected to the purification chamber. Figure 8 ), at least a portion of the fan 31 is installed in the wind collecting hood 321 to improve the air suction efficiency. Exemplarily, the fan box 32 is fixed to the top of the main housing 11 and is at least partially embedded in the main housing 11. The top of the fan box 32 is provided with a mounting bracket 33 that exposes the upper end opening of the wind collecting hood 321, and the fan 31 is supported on the mounting bracket 33. The fan 31 can be a centrifugal fan, including fan blades 311 and a motor 312. The fan blades 311 are installed in the wind collecting hood 321, and the motor 312 is located above the fan blades 311. The fan 31 can also be an axial flow fan.

[0037] The lower end opening of the air collecting cover 321 shrinks toward its radial inner side and is connected to the air flow hole 154 on the top wall 153 of the inner frame 15. Under the suction action of the fan 31, the external air enters the purification chamber and is purified by the filter element 20. The purified air enters the air collecting cover 321 from the central axis hole of the filter element 20, and then enters the air outlet cover 12 from the air collecting cover 321 and is discharged to the surrounding environment from the air outlet cover 12. Figure 8 As shown, the lower end of the air collecting cover 321 can be provided with an air inlet grid 322 and / or an air inlet hole; the lower end of the air collecting cover 321 can also adopt an open structure without an air inlet grid 322 and an air inlet hole to facilitate the flow of air inside the purifier.

[0038] The air outlet cover 12 is connected to the fan box 32 or the main housing 11 and is mounted on the fan assembly 30. Exemplarily, the air outlet cover 12 includes side walls 121 connected to the main housing 11 and a top wall 122 disposed on top of the side walls 121. Air outlet structures are provided on the side walls 121 and / or the top wall 122. The side walls 121 and the top wall 122 can be separate structures or integrally formed.

[0039] In the embodiment, the top wall 122 is provided with an air outlet grille 123 (see Figure 1 ) and the motor cover 124 (see Figure 5), the grid plate in the air outlet grille 123 can be arranged vertically so that the air outlet direction is vertically upward. The grid plate can be a wavy structure with a concave middle in its length direction. As a whole, the middle part of the air outlet grille 123 presents an arc-shaped concave area.

[0040] Optionally, the air outlet grille 123 is movably provided, for example, rotatably connected to the side wall 121, so that the inclination of the grid plate in the air outlet grille 123 can be any angle as required, and the user can adjust the air outlet direction as required, thereby improving the flexibility of the wind direction.

[0041] In the embodiment, Figure 1 As shown, the side walls 121 of the air hood 12 may be provided with densely distributed air outlet holes 1211. For example, at least one side wall 121 or all four side walls 121 may be provided with air outlet holes 1211 to achieve both vertical and lateral air outlet. As a variation of the embodiment, at least one side wall 121 of the air hood 12 may be provided with an air outlet grille (which may be fixed or movable to facilitate adjustment of the air outlet direction), and the air outlet grille 123 of the top wall 122 may be replaced with densely distributed air outlet holes. In addition, the air outlet holes 1211 on the side walls 121 may be replaced with blind holes, which are primarily decorative and do not provide air outlet.

[0042] An operation / display panel 125 may be provided on the air outlet cover 12. The operation / display panel 125 may be arranged on the top wall 122 and located next to the air outlet grille 123, or may be arranged on the side wall 121, or may be partially arranged on the top wall 122 and partially arranged on the side wall 121.

[0043] Furthermore, the air purifier may further include a dust sensor 16. The dust sensor 16 can detect the pollution level of the ambient air. For example, the dust sensor starts detecting the pollution level when the air purifier is turned on. The air purifier can automatically adjust the wind speed according to the pollution level when in automatic mode.

[0044] Exemplarily, the dust sensor 16 is arranged on the main shell 11 and is located above the opening 111a. A grid-type sensor cover 111d is provided on the door cover 111b at a position corresponding to the dust sensor 16. The sensor cover 111d is integrally formed with the door cover 111b or is detachably connected. External air can contact the dust sensor 16 through the sensor cover 111d.

[0045] Although the present invention has been described above through embodiments, it should be understood that the above embodiments are only used to exemplarily describe the feasible implementation plans of the present invention and should not be interpreted as limiting the scope of protection of the present invention. That is, any replacement or change made by those skilled in the art in accordance with the present invention should also be covered by the scope of protection of the claims of the present invention.

Claims

1. An air purifier comprising a housing, a filter element, and a fan, wherein the housing comprises a main housing and an air outlet cover mounted on the main housing, and the filter element is disposed within the main housing; characterized in that: The main shell includes an air inlet side wall provided with an air inlet and a side cover installed on the air inlet side wall. The side cover is arranged on the outside of the air inlet and covers the air inlet. An air inlet gap connected to the air inlet is formed between the edge of the side cover and the air inlet side wall.

2. The air purifier according to claim 1, characterized in that: The side cover is spaced apart from the air inlet side wall, and the air inlet gap is formed on the entire edge of the side cover.

3. The air purifier according to claim 1, characterized in that: At least a portion of the air inlet side wall is arranged to be recessed toward the inner side of the main shell, and the cover plate of the side cover is at least partially arranged in the recessed portion of the air inlet side wall in the thickness direction thereof.

4. The air purifier according to claim 1, characterized in that: A buckle is provided on the surface of the side cover facing the air inlet side wall, and a slot matched with the buckle is provided on the air inlet side wall.

5. The air purifier according to claim 4, characterized in that: A flange protruding toward the side cover is provided on a side edge of the card slot, and a contact protrusion abutting against the flange and the air inlet side wall is provided on a surface of the side cover facing the air inlet side wall.

6. The air purifier according to claim 1, characterized in that: The main housing is a rectangular housing; One of the side surfaces of the main shell is provided with an opening for installing / removing the filter element and a door cover for covering the opening is detachably installed, and at least one of the other three side surfaces of the main shell is provided with the air inlet side wall and the side cover.

7. The air purifier according to claim 6, characterized in that: An air inlet hole is provided on the door cover, and the area of ​​the air inlet is larger than that of the air inlet hole.

8. The air purifier according to claim 1, characterized in that: An inner frame is provided in the main shell, and the inner frame has a limiting portion that abuts against the outer peripheral surface of the filter element to locate the installation position of the filter element; a purification cavity is formed between the top wall of the inner frame and the bottom wall of the main shell, and the axial ends of the filter element are respectively in pressure abutment with the top wall and the bottom wall.

9. The air purifier according to claim 8, characterized in that: A fan box is provided above the inner frame. The fan box has a hollow air collecting cover communicated with the purification cavity. At least a portion of the fan is installed in the air collecting cover.

10. The air purifier according to claim 1, characterized in that: The air outlet cover includes an air outlet structure located on the top and / or arranged on the side wall thereof, and the air outlet structure includes an air outlet grid and / or an air outlet hole.

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