Air purification device

Abstract

The utility model discloses an air purification device which comprises a shell, an air duct assembly, a filter element assembly arranged below the air duct assembly and a fan assembly arranged in the air duct assembly are arranged in the shell, the shell is covered with a cover body, the cover body comprises an air outlet cover and an air guide shell arranged on the lower side of the air outlet cover, and the air guide shell is arranged in the air outlet cover. The area of the inner side of the air guide shell is gradually reduced from bottom to top, an air outlet communicated with an outlet in the upper end of the air guide shell is formed in the air outlet cover, and the air channel assembly comprises an air guide frame arranged on the lower side of the air guide shell and an air channel shell arranged on the lower side of the air guide frame. The air guide frame comprises a plurality of air guide blades distributed in the circumferential direction. In this way, air blown out of the air duct cavity in the air duct shell is guided through the air guide blades, air outlet is smoother, the air outlet speed can be increased when the air guide blades are arranged in the air guide shell, and therefore the purification rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of purification devices, in particular to an air purification device. Background Art

[0002] With the development of society, people pay more and more attention to the air quality of the living environment, and air purifiers come into being. An air purifier refers to a product that can adsorb, decompose or transform various air pollutants (generally including PM2.5, dust, pollen, peculiar smell, decoration pollution such as formaldehyde, bacteria, allergens, etc.) to improve the air cleanliness, and is more and more widely used in people's lives. People also put forward higher requirements for air purifiers. Among them, whether the air duct layout of the air purifier is reasonable will affect the purification efficiency of the air purifier. In the patent document with the publication number of CN219531109U, an air purifier is disclosed. However, a fan is provided in the air duct of this air purifier, resulting in the need for a support frame in the air duct to support the fan, which will hinder the flow of air in the air duct, cause the air outlet to be unsmooth, and thus affect the purification efficiency. Summary of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide an air purification device that can make the air outlet smooth and improve the purification rate.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] An air purification device includes a housing. The housing includes an air duct assembly, a filter element assembly disposed below the air duct assembly, and a fan assembly disposed in the air duct assembly. The housing is covered with a cover body. The cover body includes an air outlet cover and a wind guide shell disposed below the air outlet cover. The area inside the wind guide shell gradually decreases from bottom to top. The air outlet cover is provided with an air outlet communicating with the upper end outlet of the wind guide shell. The air duct assembly includes a wind guide frame disposed below the wind guide shell and an air duct shell disposed below the wind guide frame. The wind guide frame includes a plurality of wind guide blades distributed circumferentially.

[0006] In a preferred embodiment of the utility model, a first limiting step extends downward on the air outlet cover and outside the air outlet. The upper side of the wind guide shell is provided with a second limiting step that abuts against the first limiting step. The lower side of the wind guide shell is provided with a third limiting step. The upper side of the wind guide frame is provided with a fourth limiting step that abuts against the third limiting step.

[0007] In a preferred embodiment of the present utility model, a first positioning groove is provided on the first limiting step, a first positioning block matching the first positioning groove is provided on the second limiting step, a second positioning groove is provided on the third limiting step, and a second positioning block matching the second positioning groove is provided on the fourth limiting step.

[0008] In a preferred embodiment of the present utility model, the shape of the air guiding shell is centrosymmetric about its central axis.

[0009] In a preferred embodiment of the present utility model, the outer side of the air outlet hood is turned downwards to form a lower edge abutting against the upper end of the housing, a protrusion extending downwards and inserted into the inner side of the housing is provided on the lower edge, a clamping groove is provided on the inner side of the housing, and a clamping buckle that can be buckled into the clamping groove is provided on the protrusion.

[0010] In a preferred embodiment of the present utility model, a convex block is provided on the outer side of the protrusion to separate it from the housing.

[0011] In a preferred embodiment of the present utility model, the air guiding vane is an arc-shaped vane, and the thickness of the air guiding vane gradually increases from bottom to top.

[0012] In a preferred embodiment of the present utility model, an air outlet grille is provided on the air outlet hood and within the air outlet. The air outlet grille includes a plurality of intersecting arc-shaped grille bars, and the height of the outer side of the arc-shaped grille bars is higher than that of the inner side.

[0013] In a preferred embodiment of the present utility model, the fan assembly includes a driving motor provided on the air guiding frame and a fan provided at the output end of the driving motor and located within the air duct housing. The lower part of the air duct housing is trumpet-shaped.

[0014] In a preferred embodiment of the present utility model, the filter element assembly includes an annular filter element. A support frame is provided between the filter element assembly and the air duct housing. An air inlet that can communicate the inner side of the annular filter element with the inner side of the air duct housing is provided on the support frame. An air inlet hole is provided on the housing and at the position of the annular filter element.

[0015] The beneficial effects of the present utility model are as follows: The air purification device includes a housing, in which there are an air duct assembly, a filter element assembly and a fan assembly, and a cover body covering the housing. Among them, the cover body includes an air outlet hood and a wind guide shell arranged on the lower side of the air outlet hood. The area inside the wind guide shell gradually decreases from bottom to top. The air duct assembly includes a wind guide frame arranged on the lower side of the wind guide shell and an air duct shell arranged on the lower side of the wind guide frame. And a number of wind guide blades distributed circumferentially are arranged in the wind guide frame. In this way, the air blown out from the air duct cavity in the air duct shell is guided by the wind guide blades, making the air outlet smoother. And when passing through the wind guide shell, the air outlet speed can be increased, so as to improve the purification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a cross-sectional view of an air purification device of the present utility model;

[0017] Figure 2 is an assembly schematic diagram of the cover body and the air duct assembly in an air purification device of the present utility model;

[0018] Figure 3 is a schematic diagram of the air outlet hood in an air purification device of the present utility model;

[0019] Figure 4 is a schematic diagram of the wind guide shell in an air purification device of the present utility model;

[0020] Figure 5 is a schematic diagram of the wind guide frame in an air purification device of the present utility model;

[0021] Figure 6 is a schematic diagram of an air purification device of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings.

[0023] Refer to Figures 1 to 6, an air purification device, including a housing 1. Inside the housing 1, there are an air duct assembly 2, a filter element assembly 3 arranged below the air duct assembly 2, and a fan assembly 4 arranged inside the air duct assembly 2. A cover body 5 is covered on the housing 1. The cover body 5 includes an air outlet hood 51 and a wind guiding shell 52 arranged on the lower side of the air outlet hood 51. The cross-sectional area inside the wind guiding shell 52 gradually decreases from bottom to top. An air outlet 511 communicating with the upper end outlet of the wind guiding shell 52 is provided on the air outlet hood 51. The air duct assembly 2 includes a wind guiding frame 21 arranged on the lower side of the wind guiding shell 52 and an air duct shell 22 arranged on the lower side of the wind guiding frame 21. And a number of wind guiding vanes 211 distributed circumferentially are arranged inside the wind guiding frame 21. The wind guiding vanes 211 are designed to replace the role of the support frame to support the fan assembly 4. In this way, the air blown out from the air duct cavity in the air duct shell 22 is guided by the wind guiding vanes 211, making the air outlet smoother, not being subject to greater obstruction, and the noise is correspondingly reduced. At the same time, the occurrence of air turbulence can be reduced. Also, when passing through the wind guiding shell 52, the air outlet speed can be increased, thereby improving the purification rate.

[0024] Reference Figures 2 to 5 , in this solution, a first limiting step 512 extends downward on the air outlet hood 51 and outside the air outlet 511. A second limiting step 521 abutted against the first limiting step 512 is provided on the upper side of the wind guiding shell 52. A third limiting step 522 is provided on the lower side of the wind guiding shell 52. A fourth limiting step 212 abutted against the third limiting step 522 is provided on the upper side of the wind guiding frame 21. So that the outlet of the wind guiding shell 52 coincides with the air outlet 511, and the inlet of the wind guiding shell 52 coincides with the outlet of the wind guiding frame 21, thus forming the entire air outlet channel. Also, the wind guiding shell 52 is used to support the air outlet hood 51 to prevent it from being easily deformed by force.

[0025] Further, a first positioning groove 513 is provided on the first limiting step 512. A first positioning block 523 matched with the first positioning groove 513 is provided on the second limiting step 521. A second positioning groove 524 is provided on the third limiting step 522. A second positioning block 213 matched with the second positioning groove 524 is provided on the fourth limiting step 212, thus facilitating the installation and positioning of the wind guiding shell 52 and the wind guiding frame 21.

[0026] Reference Figure 4 , in this solution, the shape of the wind guiding shell 52 is centrosymmetric about its central axis. Specifically, the shape of the lower side of the wind guiding shell 52 is circular and matched with the wind guiding frame 21, and the shape of the upper side is a square shape. Of course, it can also be other centrosymmetric shapes, so as to change the shape of the air outlet 511, making it adaptable to different shapes of the cover body 5.

[0027] ReferenceFigure 1 , in this solution, in order to be able to fix the cover body 5 on the housing 1, the outer side of the air outlet cover 51 is turned downward to form a lower edge 514 that abuts against the upper end of the housing 1, and a protrusion 515 that extends downward and is inserted into the inner side of the housing 1 is provided on the lower edge 514. At the same time, a card slot is provided on the inner side of the housing 1, and a buckle 516 that can be buckled into the card slot is provided on the protrusion 515 of the device, so as to detachably assemble the cover body 5 on the housing 1. Preferably, a convex block 517 that can separate it from the housing 1 is provided on the outer side of the protrusion 515, so that there is a gap between the protrusion 515 and the housing 1, so as to facilitate covering the cover body 5 on the housing 1 for assembly.

[0028] Reference Figure 5 , in this solution, the air guiding vane 211 is an arc-shaped vane, and the thickness of the air guiding vane 211 gradually increases from bottom to top, so that when air flows through the air guiding vane 211, the resistance received is smaller. The air guiding vanes 211 are spaced 20° - 60° from each other, so as to avoid too many air guiding vanes from hindering the air outlet, and if it is too small, the effect of guiding the air outlet becomes worse.

[0029] Reference Figure 2 and Figure 3 , in this solution, an air outlet grille 518 is provided on the air outlet cover 51 and located inside the air outlet 511. The air outlet grille 518 includes a plurality of intersecting arc-shaped grille bars. The height of the outer side of the arc-shaped grille bar is higher than that of its inner side. By providing the air outlet grille 518, it is possible to prevent sundries from entering the air duct housing 22 from the air outlet 511 and affecting the rotation of the fan assembly 4, and at the same time, it can also reduce the resistance received when air flows through the air outlet grille 518.

[0030] Reference Figure 1 , in this case, the fan assembly 4 includes a driving motor 41 provided on the air guiding frame 21 and a fan 42 provided at the output end of the driving motor 41 and located inside the air duct housing 22, and the lower part of the air duct housing 22 is in a horn shape, so as to facilitate air flowing into the air duct housing 22.

[0031] Reference Figure 1 , in this case, the filter element assembly 3 includes an annular filter element 31. A support frame 6 is provided between the filter element assembly 3 and the air duct housing 22, and an air inlet 61 that can communicate the inner side of the annular filter element 31 with the inner side of the air duct housing 22 is provided on the support frame 6. An air inlet grille 61 is provided in the air inlet 61. An air inlet hole 12 is provided on the housing 1 and located at the annular filter element 31, so that air enters the housing 1 from the air inlet hole 12, is purified by the annular filter element 31, and then passes through the annular opening on the inner side of the annular filter element 31 through the air inlet 61 into the air duct housing 22, and then flows out from the air outlet 511 after being guided by the air guiding vanes 211, so as to complete air purification.

[0032] Based on the above-mentioned ideal embodiments of the present utility model as inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An air purification device, comprising a housing (1), wherein the housing (1) comprises an air duct assembly (2), a filter element assembly (3) arranged below the air duct assembly (2), and a fan assembly (4) arranged in the air duct assembly (2), wherein the housing (1) is covered with a cover (5), characterized in that: The cover body (5) comprises an air outlet cover (51) and an air guide shell (52) arranged at the lower side of the air outlet cover (51); the area of ​​the inner side of the air guide shell (52) gradually decreases from bottom to top; the air outlet cover (51) is provided with an air outlet (511) which is connected to the upper outlet of the air guide shell (52); the air duct assembly (2) comprises an air guide frame (21) arranged at the lower side of the air guide shell (52); and an air duct shell (22) arranged at the lower side of the air guide frame (21); the air guide frame (21) comprises a plurality of air guide blades (211) distributed along the circumferential direction.

2. An air purification device according to claim 1, characterized in that: A first limiting step (512) is provided on the air outlet cover (51) and is located on the outer side of the air outlet (511) and extends downward, a second limiting step (521) is provided on the upper side of the air guide shell (52) and is abutted against the first limiting step (512), a third limiting step (522) is provided on the lower side of the air guide shell (52), and a fourth limiting step (212) is provided on the upper side of the air guide frame (21) and is abutted against the third limiting step (522).

3. An air purification device according to claim 2, characterized in that: The first limiting step (512) is provided with a first positioning groove (513), the second limiting step (521) is provided with a first positioning block (523) matched with the first positioning groove (513), the third limiting step (522) is provided with a second positioning groove (524), and the fourth limiting step (212) is provided with a second positioning block (213) matched with the second positioning groove (524).

4. An air purification device according to claim 1, characterized in that: The shape of the air guide shell (52) is centrosymmetric about its central axis.

5. An air purification device according to claim 1, characterized in that: The outer side of the air outlet cover (51) is turned downward to form a lower edge (514) that abuts against the upper end of the shell (1); the lower edge (514) is provided with a protrusion (515) that extends downward and is inserted into the inner side of the shell (1); the inner side of the shell (1) is provided with a slot (11); the protrusion (515) is provided with a buckle (516) that can be buckled into the slot (11).

6. An air purification device according to claim 5, characterized in that: A convex block (517) is provided on the outer side of the protrusion (515) and can separate the protrusion from the housing (1).

7. An air purification device according to any one of claims 1 to 6, characterized in that: The air guide blade (211) is an arc-shaped blade, and the thickness of the air guide blade (211) gradually increases from bottom to top.

8. An air purification device according to claim 7, characterized in that: An air outlet grille (518) is provided on the air outlet cover (51) and inside the air outlet (511); the air outlet grille (518) comprises a plurality of mutually intersecting arcuate grille bars, and the height of the outer side of the arcuate grille bar is higher than the height of the inner side thereof.

9. An air purification device according to claim 8, characterized in that: The fan assembly (4) comprises a driving motor (41) arranged on the air guide frame (21), and a fan (42) arranged at the output end of the driving motor (41) and located in the air duct shell (22); the lower part of the air duct shell (22) is trumpet-shaped.

10. An air purification device according to claim 9, characterized in that: The filter element assembly (3) comprises an annular filter element (31); a support frame (6) is provided between the filter element assembly (3) and the air duct shell (22); an air inlet (61) is provided on the support frame (6) for connecting the inner side of the annular filter element (31) with the inner side of the air duct shell (22); and an air inlet hole (12) is provided on the shell (1) and located at the exit of the annular filter element (31).

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