Air purifier

Abstract

The utility model discloses an air purifier which comprises a shell, an air duct cavity is formed in the shell, a filtering assembly is arranged in the shell and located on the other side of the air duct cavity, and the shell comprises an air inlet close to one side of the filtering assembly and an air outlet located at an outlet of the air duct cavity. A fan assembly is arranged in the air duct cavity and comprises a wind wheel arranged in the air duct cavity and a motor driving the wind wheel to rotate, and the wind wheel comprises a base body and a plurality of blades distributed along the outer edge of the base body. The inner sides of the blades incline inwards from the ends close to the filtering assembly to the ends away from the filtering assembly. Therefore, the air inlet speed is increased, and the purification efficiency is improved.

Description

Technical Field

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

[0002] With the development of society, people pay more and more attention to the air quality of their living environment, and air purifiers have emerged. Air purifiers are products that can absorb, decompose or transform various air pollutants (generally including PM2.5, dust, pollen, odor, decoration pollution such as formaldehyde, bacteria, allergens, etc.) to improve air cleanliness. They are more and more widely used in people's lives, and people have also put forward higher requirements for air purifiers. Among them, the circulation efficiency of air purifiers is an important indicator, which is related to the purification efficiency of air purifiers. A wind duct assembly and a purifier are also disclosed in the patent document with publication number CN220269626U, but the air inlet speed of the purifier is not high, so the purification speed of the purifier is slow and the purification efficiency is not high. Utility Model Content

[0003] In view of this, an object of the present utility model is to provide an air purifier which facilitates air intake to improve purification efficiency.

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

[0005] An air purifier comprises a shell, an air duct cavity is formed in the shell, a filter assembly is arranged in the shell and located on the other side of the air duct cavity, the shell comprises an air inlet close to one side of the filter assembly, and an air outlet located at the outlet of the air duct cavity, a fan assembly is arranged in the air duct cavity, the fan assembly comprises a wind wheel arranged in the air duct cavity, and a motor driving the wind wheel to rotate, the wind wheel comprises a base, and a plurality of blades distributed along the outer edge of the base, the inner side of the blade is inclined inward from one end close to the filter assembly to one end away from the filter assembly.

[0006] In a preferred embodiment of the present invention, the cross section of the blade is in an arc shape.

[0007] In a preferred embodiment of the present invention, the shell includes an outer shell, an upper cover plate arranged at the outlet of the air duct cavity, an inner shell arranged in the outer shell, and an air duct volute arranged in the outer shell and cooperating with the inner shell to form the air duct cavity, the inner shell is provided with a receiving groove which can accommodate the filter assembly, and the receiving groove is provided with an air guide port connected to the air duct cavity.

[0008] In a preferred embodiment of the utility model, the wind duct volute includes an inner curved wind-guiding wall, and the distance between the curved wind-guiding wall and the wind wheel gradually increases along the wind outlet direction.

[0009] In a preferred embodiment of the present invention, the distances between the wind guide curved wall and the wind wheel are a1, a2, a3 and a4 respectively, and a1, a2, a3 and a4 are evenly arranged and distributed along the wind outlet direction, and a1 is the distance between the wind guide curved wall and the wind wheel at the wind inlet, wherein a1: a2: a3: a4 = 1: 3.5-4.5: 8-9: 12.5-13.5; and a1 = 1.5mm-3.5mm.

[0010] In a preferred embodiment of the present invention, a gap is left between the wind wheel and the inner shell and the air duct volute, and the width of the gap is greater than or equal to 3 mm.

[0011] In a preferred solution of the present invention, the air inlet is arranged on the side wall of the outer shell and communicates with the accommodating groove.

[0012] In a preferred solution of the utility model, the air outlet is arranged on the upper cover plate and communicates with the air duct cavity.

[0013] In a preferred embodiment of the present invention, the inner shell is detachably connected to the air duct volute.

[0014] In a preferred solution of the utility model, a plurality of limit blocks for supporting the filter assembly are arranged in the containing groove.

[0015] The beneficial effects of the utility model are as follows: the air purifier comprises a shell, a filter assembly and a fan assembly located in the shell, and an air inlet and an air outlet arranged on the shell, wherein the fan assembly comprises a wind wheel arranged in an air duct cavity of the shell, and a motor driving the wind wheel to rotate, the wind wheel comprises a base body, and a plurality of arc-shaped blades distributed along the outer edge of the base body, and at the same time, the inner side of the blade is inclined inward from one end close to the filter assembly to one end away from the filter assembly, thereby accelerating the air intake speed and improving the purification efficiency.

[0016] In addition, the distance between the wind guide curved wall and the wind wheel gradually increases along the air outlet direction, and the distance ratio therebetween is a1:a2:a3:a4=1:3.5-4.5:8-9:12.5-13.5; and a1=1.5mm-3.5mm, thereby effectively preventing air from flowing back in the air duct cavity and further improving the purification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an exploded schematic diagram of an air purifier of the utility model;

[0018] Figure 2 It is a longitudinal cross-sectional view of an air purifier of the utility model;

[0019] Figure 3 It is a transverse cross-sectional view of an air purifier of the utility model;

[0020] Figure 4 It is a schematic diagram of a fan wheel in an air purifier of the utility model;

[0021] Figure 5 The utility model is a cross-sectional view of a fan wheel in an air purifier. DETAILED DESCRIPTION

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

[0023] Reference Figures 1 to 5 An air purifier includes a shell 1, in which an air duct cavity 11 is formed, and a filter assembly 2 is provided in the shell 1 and on the other side of the air duct cavity 11 to filter the air entering the air duct cavity 11. The shell 1 includes an air inlet 12 close to one side of the filter assembly 2 and an air outlet 13 located at the outlet of the air duct cavity 11, and a fan assembly 3 is provided in the air duct cavity 11, so that the air is driven by the fan assembly 3 to enter the filter assembly 2 from the air inlet 12 for purification, and then discharged from the air duct cavity 11 through the air outlet 13, thereby achieving the effect of purifying the air. The fan assembly 3 includes a wind wheel 31 arranged in the air duct cavity 11, and a motor 32 for driving the wind wheel 31 to rotate. The wind wheel 31 includes a base 311, and a plurality of blades 312 distributed circumferentially along the outer edge of the base 311, and the inner side of the blade 312 is inclined inward from the end close to the filter assembly 2 to the end away from the filter assembly 2. In this way, when the blade 312 rotates, due to the different speeds at both ends of the blade 312, a pressure difference is formed, which is beneficial for external air to enter the air duct cavity 11 from the air inlet 12, thereby accelerating the air circulation speed and improving the purification efficiency.

[0024] refer to Figure 4 and Figure 5 In this embodiment, the cross-section of the blade 312 is in an arc shape, so as to reduce the air resistance encountered by the blade 312 when it rotates, improve its efficiency and increase its wind force, and the rotation of the blade 312 is more stable and the noise is further reduced.

[0025] refer to Figure 1In the present embodiment, the housing 1 comprises an outer housing 14, an upper cover plate 15 arranged at the outlet of the air duct cavity 11, an inner housing 16 arranged in the outer housing 14, and an air duct volute 17 arranged in the outer housing 14 and cooperating with the inner housing 16 to form the air duct cavity 11. A receiving groove 161 for accommodating the filter assembly 2 is provided on the inner housing 16, and an air guide port 162 communicating with the air duct cavity 11 is provided on the bottom wall of the receiving groove 161.

[0026] The wind duct volute 17 includes an inner wind guide curved wall 171, which is composed of a plurality of arc surfaces, and the distance between the wind guide curved wall 171 and the wind wheel 31 gradually increases along the wind outlet direction. Specifically, the distances between the wind guide curved wall 171 and the wind wheel 31 are a1, a2, a3 and a4, respectively, and a1, a2, a3 and a4 are evenly arranged and distributed along the wind outlet direction, and are 90° apart, and a1 is the distance between the wind guide curved wall 171 and the wind wheel 31 at the wind inlet, wherein a1: a2: a3: a4 = 1: 3.5-4.5: 8-9: 12.5-13.5; and the length of a1 is 1.5mm-3.5mm, so as to reasonably design the position of the wind wheel 31 in the wind duct cavity 11 and the shape of the wind guide curved wall 171, thereby reducing the backflow of air in the wind duct cavity 11 and increasing its wind outlet efficiency. Preferably, when a1 is 2.5 mm, the air outlet efficiency is better.

[0027] refer to Figure 3 In this solution, a gap is left between the wind wheel 31 and the inner shell 16 and the air duct volute 17, and the width of the gap is greater than or equal to 3 mm, so as to reduce the resistance encountered by the wind wheel 31 when rotating, increase its wind speed, and improve the purification effect.

[0028] refer to Figure 1 In this embodiment, the air inlet 12 is arranged on the side wall of the outer shell 14 and communicates with the accommodating groove 161, and the air inlet 12 is a plurality of through holes evenly distributed on the side wall of the outer shell 14, so as to increase the air inlet area; at the same time, the air outlet 13 is arranged on the upper cover plate 15 and communicates with the air duct cavity 11.

[0029] refer to Figure 1 In this solution, the inner shell 16 and the air duct volute 17 are detachably connected, and the two are detachably connected by threaded fitting, so as to facilitate manufacturing, production, disassembly and replacement.

[0030] refer to Figure 3 In this solution, a plurality of limit blocks 163 for supporting the filter assembly 2 are provided in the accommodating groove 161. The limit blocks 163 are used to support the filter assembly 2 so that a certain distance is separated between the filter assembly 2 and the air guide port 162, which is beneficial for the air purified by the filter assembly 2 to enter the air duct cavity 11.

[0031] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An air purifier, comprising a housing (1), wherein an air duct cavity (11) is formed in the housing (1), a filter assembly (2) is arranged in the housing (1) and located on the other side of the air duct cavity (11), the housing (1) comprises an air inlet (12) close to one side of the filter assembly (2), and an air outlet (13) located at the outlet of the air duct cavity (11), a fan assembly (3) is arranged in the air duct cavity (11), the fan assembly (3) comprises a wind wheel (31) arranged in the air duct cavity (11), and a motor (32) for driving the wind wheel (31) to rotate, characterized in that: The wind wheel (31) comprises a base (311) and a plurality of blades (312) distributed along the outer edge of the base (311), wherein the inner side of the blades (312) is inclined inwardly from an end close to the filter assembly (2) to an end away from the filter assembly (2).

2. An air purifier according to claim 1, characterized in that: The cross-section of the blade (312) is in an arc shape.

3. An air purifier according to claim 2, characterized in that: The shell (1) comprises an outer shell (14), an upper cover plate (15) arranged at the outlet of the air duct cavity (11), an inner shell (16) arranged in the outer shell (14), and an air duct volute (17) arranged in the outer shell (14) and cooperating with the inner shell (16) to form the air duct cavity (11); the inner shell (16) is provided with a receiving groove (161) capable of receiving the filter assembly (2); and the receiving groove (161) is provided with an air guide port (162) connected to the air duct cavity (11).

4. An air purifier according to claim 3, characterized in that: The air duct volute (17) comprises an air guiding curved wall (171) located on the inner side, and the distance between the air guiding curved wall (171) and the wind wheel (31) gradually increases along the air outlet direction.

5. An air purifier according to claim 4, characterized in that: The distances between the wind-guiding curved wall (171) and the wind wheel (31) are respectively a1, a2, a3 and a4, wherein a1, a2, a3 and a4 are evenly arranged and distributed along the wind outlet direction, and a1 is the distance between the wind-guiding curved wall (171) and the wind wheel (31) at the wind inlet, wherein a1: a2: a3: a4=1: 3.5-4.5: 8-9: 12.5-13.5; and a1=1.5mm-3.5mm.

6. An air purifier according to claim 3, characterized in that: A gap is left between the wind wheel (31) and the inner shell (16) and the air duct volute (17), and the width of the gap is greater than or equal to 3 mm.

7. An air purifier according to any one of claims 3 to 6, characterized in that: The air inlet (12) is arranged on the side wall of the outer shell (14) and communicates with the containing groove (161).

8. An air purifier according to claim 7, characterized in that: The air outlet (13) is arranged on the upper cover plate (15) and communicates with the air duct cavity (11).

9. An air purifier according to claim 8, characterized in that: The inner shell (16) is detachably connected to the air duct volute (17).

10. An air purifier according to claim 9, characterized in that: A plurality of limit blocks (163) for supporting the filter assembly (2) are arranged in the containing groove (161).

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