Air duct structure of air purifier

Abstract

The utility model belongs to the field of air purification equipment, and particularly relates to an air duct structure of an air purifier, which comprises an air inlet duct formed by enclosing a support, the inner surface of a filter element and the bottom of a lower shell together, an air inlet hole is formed in the surface of the lower shell, the filter element is annular and extends along the vertical direction, the filter element is arranged in the lower shell, and the air inlet duct is communicated with the air inlet hole. The upper part of the lower shell extends inwards to be provided with an annular first flow guide wall, the support is positioned at the upper end of the filter element, and a communicating hole is formed in the support; the air supply duct is jointly defined by an upper shell, a first flow guide wall and a support, the upper shell is installed above the lower shell, an air outlet hole is formed in the top of the upper shell, a wind wheel is rotationally arranged in the upper shell, the wind wheel and the air inlet duct are coaxially arranged, the air inlet duct is communicated with the air supply duct through a communication hole, and the air supply duct is communicated with the air outlet hole. According to the air purifier structure, the number of parts can be reduced, the production cost is saved, and the production efficiency can be improved.

Description

Technical Field

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

[0002] The air we breathe can sometimes contain pollutants such as PM2.5, dust, pollen, formaldehyde, bacteria, and allergens. Purifying the air with an air purifier can improve air quality and reduce the amount of these pollutants we inhale. Specifically, an air purifier is an air purification device that can absorb, decompose, or convert various air pollutants.

[0003] In existing air purifiers, the flow of air within the purifier requires the use of guides to direct the airflow. For example, in Chinese Utility Model Patent Publication No. CN219693539U, a guide seat is installed inside the purifier to guide the airflow. The guide seat forms an upwardly extending air supply duct for the airflow to flow upward. However, this existing air purifier has many parts and is inefficient to install. Utility Model Content

[0004] The purpose of the utility model is to provide an air duct structure for an air purifier, aiming to solve the technical problems of the prior art such as the large number of components and low installation efficiency.

[0005] The top of the filter element has a bottom surface, and the bottom surface of the filter element has a bottom surface, and the bottom surface of the filter element has a bottom surface, and the bottom surface of the filter element has a bottom surface, and the bottom surface of the filter element has a bottom surface, and the bottom surface of the filter element has a bottom surface, and the bottom surface of the filter element has a bottom surface, and the bottom surface of the filter element has a bottom surface, and the bottom surface of the

[0006] Optionally, a second guide wall is provided at the bottom of the wind wheel, the second guide wall is annular and is arranged around the circumference of the wind wheel, and the second guide wall gradually tilts upward from its inner circle to its outer circle.

[0007] Optionally, the second guide wall is an upwardly convex arc surface.

[0008] Optionally, the first guide wall extends toward the center of the lower shell and gradually tilts downward, and the first guide wall and the second guide wall have the same tilt direction and the same curvature.

[0009] Optionally, a third guide wall is provided on the top of the wind wheel, and the third guide wall is gradually inclined upward from the center of the wind wheel, and a plurality of blades are provided between the third guide wall and the second guide wall.

[0010] Optionally, the bottom surface of the first guide wall is fixedly connected to the support via fasteners, and the bottom end of the first guide wall abuts against the upper surface of the support.

[0011] Optionally, a stop rib extends upward from the upper surface of the support, and the outer diameter of the stop rib is smaller than the inner diameter of the first guide wall.

[0012] Optionally, the first guide wall and the lower shell are formed integrally.

[0013] Optionally, an annular groove is provided on the upper surface of the lower shell, and an annular protrusion is provided on the lower surface of the upper shell. The annular protrusion can be inserted into the annular groove and connected to each other through fasteners.

[0014] Compared with the prior art, the above-mentioned one or more technical solutions in the air duct structure of an air purifier provided by the embodiment of the present invention have at least one of the following technical effects: when the wind wheel rotates, air can enter the lower shell through the air inlet hole, be filtered by the filter element, and enter the air inlet duct. The air in the air inlet duct can enter the air supply duct through the connecting hole under the drive of the wind wheel and be discharged from the air outlet hole. Specifically, because the shell, the first guide wall, and the support in the present invention enclose the air supply duct, the air purifier in the present invention does not need to set up an additional guide seat in the shell as in the structure in the prior art. Therefore, the air purifier structure in the present invention can reduce the number of parts, save production costs, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 This is a schematic structural diagram of the air purifier in the present utility model;

[0017] Figure 2 for Figure 1Schematic diagram of the cross-sectional structure along the AA direction;

[0018] Figure 3 This is a schematic cross-sectional view of the lower housing of the present invention;

[0019] Figure 4 It is a structural diagram of the support in the present utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the motor bracket in the present utility model;

[0021] Figure 6 This is a schematic structural diagram of the wind wheel in the present invention.

[0022] Among them, the reference numerals in the figures are:

[0023] Lower shell 100, air inlet 110, first guide wall 120, annular groove 130;

[0024] Filter element 200;

[0025] Support 300, communicating hole 310, and stopping rib 320;

[0026] Upper housing 400, air outlet 410, annular protrusion 420;

[0027] The wind wheel 500, the second guide wall 510, the third guide wall 520, and the blades 530;

[0028] Air inlet duct 600;

[0029] Air supply duct 700;

[0030] Motor bracket 800 , drive motor 810 , through hole 820 , and mounting position 830 . DETAILED DESCRIPTION

[0031] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0034] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0035] like Figures 1 to 6 As shown, the utility model provides an air duct structure of an air purifier, including an air inlet duct 600 and an air supply duct 700.

[0036] The air inlet duct 600 is formed by the support 300, the inner surface of the filter element 200 and the bottom of the lower shell 100. The surface of the lower shell 100 is provided with an air inlet hole 110. The filter element 200 is annular and extends in the vertical direction. The filter element 200 is installed inside the lower shell 100. The upper part of the lower shell 100 is provided with a first annular guide wall 120 extending inward. The support 300 is located at the upper end of the filter element 200. The support 300 is provided with a connecting hole 31. 0. The air supply duct is enclosed by the upper shell 400, the first guide wall 120 and the support 300. The upper shell 400 is installed above the lower shell 100. The top of the upper shell 400 is provided with an air outlet 410. A wind wheel 500 is rotatably provided inside the upper shell 400. The wind wheel 500 is coaxially arranged with the air inlet duct 600. The air inlet duct 600 is connected to the air supply duct 700 through the connecting hole 310, and the air supply duct 700 is connected to the air outlet 410.

[0037] It is understood that when the impeller 500 rotates, air can enter the lower housing 100 through the air inlet hole 110, be filtered by the filter element 200, and enter the air inlet duct 600. Driven by the impeller 500, the air in the air inlet duct 600 can enter the air supply duct 700 through the connecting hole 310 and be discharged through the air outlet hole 410. Specifically, because the upper housing 400, the first guide wall 120, and the support 300 of the present invention enclose the air supply duct 700, the air purifier of the present invention does not need to be additionally provided with a guide seat in the housing as in the prior art. Therefore, the air purifier structure of the present invention can reduce the number of parts, save production costs, and improve production efficiency.

[0038] like Figure 2 and Figure 6 As shown, in one embodiment of the present invention, a second guide wall 510 is provided at the bottom of the wind wheel 500. The second guide wall 510 is annular and is arranged around the circumference of the wind wheel 500. The second guide wall 510 gradually tilts upward from its inner circle to the outer circle.

[0039] like Figure 2 and Figure 6 As shown, in one embodiment of the present invention, the second guide wall 510 is an inwardly convex arc surface to reduce the corner, so that the airflow will not be blocked when flowing through the second guide wall 510, thereby reducing noise.

[0040] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, the first guide wall 120 extends toward the center of the lower shell 100 and gradually tilts downward. That is, the first guide wall 120 is arranged to gradually tilt downward from one end connected to the lower shell 100 to the other end. The structure of the first guide wall 120 can cooperate with the support 300 structure and the upper shell 400 to form the air supply duct 700, saving the cost of setting up an additional air duct. In addition, the first guide wall 120 is designed to have the same inclination direction and curvature as the second guide wall 510, which can avoid the second guide wall 510 and form an equidistant flow channel between the first guide wall 120 and the second guide wall 510, preventing turbulence and noise when the airflow passes between the first guide wall 120 and the second guide wall 510.

[0041] like Figure 2 and Figure 6As shown, in one embodiment of the present invention, a third guide wall 520 is provided on the top of the rotor 500. The third guide wall 520 gradually slopes upward from the center of the rotor 500. A plurality of blades 530 are provided between the third guide wall 520 and the second guide wall 510. It will be appreciated that the third guide wall 520 and the second guide wall 510 can together form an upwardly inclined guide path, providing smooth guidance for the flow of air and preventing turbulence within the rotor 500. Furthermore, the plurality of blades 530 can be evenly distributed in an array around the axis of the rotor 500.

[0042] like Figure 2 As shown, in one embodiment of the present invention, the bottom surface of the first guide wall 120 is fixedly connected to the support 300 via fasteners. After the support 300 and the first guide wall 120 are connected, the lower housing 100 and the support 300 are installed as a whole. Furthermore, the lower housing 100 may include a housing wall and a bottom cover. The first guide wall 120 may be disposed on the housing wall. After the support 300 and the first guide wall 120 are connected, other components such as the filter element 200 may be further installed into the housing wall. Finally, the bottom cover is connected to the bottom surface of the housing wall to seal the bottom surface of the housing wall. In addition, the bottom end of the first guide wall 120 abuts the upper surface of the support 300, which can prevent the airflow flowing into the air supply duct 700 from flowing back into the air inlet duct 600.

[0043] like Figure 4 As shown, in one embodiment of the present invention, a stop rib 320 extends upward from the upper surface of the support 300. The stop rib 320 is annular and is arranged around the axis of the support 300. The outer diameter of the stop rib 320 is smaller than the inner diameter of the first guide wall 120. During the installation of the support 300 and the lower shell 100, the stop rib 320 can extend into the inner circle of the first guide wall 120. The first guide wall 120 can provide an assembly guide for the installation of the support 300, thereby further improving the assembly efficiency.

[0044] In one embodiment of the present invention, the first guide wall 120 can be integrally formed with the lower shell 100, that is, the two are an integrated structure. Specifically, the first guide wall 120 and the lower shell 100 can both be made of plastic and integrally injection molded in the same mold.

[0045] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, an annular groove 130 is provided on the upper surface of the lower shell 100, and an annular protrusion 420 is provided on the lower surface of the upper shell 400. The annular protrusion 420 can be inserted into the annular groove 130 to realize the mutual alignment of the lower shell 100 and the upper shell 400, and then the two can be connected to each other by fasteners such as bolts.

[0046] like Figure 2 As shown, in one embodiment of the present invention, a motor bracket 800 is further provided in the upper housing 400, and a drive motor 810 is provided on the motor bracket 800. The drive motor 810 is used to drive the wind wheel 500 to rotate. A plurality of through holes 820 are opened on the motor bracket 800 around the periphery of the drive motor 810, and both ends of the through holes 820 are connected to the air supply duct 700. In addition, in one embodiment of the present invention, the middle portion of the motor bracket 800 is recessed downward to form a mounting position 830, and the drive motor 810 is placed at the mounting position 830. The recessed mounting position 830 can reduce the overall height of the air purifier and save space. In addition, the recessed mounting position is in the form of a downwardly protruding structure, which can fit with the third guide wall 520 with an upward inclination around the circumference.

[0047] It should be noted that Figure 2 The direction of the dotted arrow in the figure is the approximate direction of the external air after entering the purifier.

[0048] The above description further details the present invention in conjunction with specific preferred embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. A person skilled in the art of the present invention will appreciate that its architecture is flexible and adaptable, allowing for the development of a series of products without departing from the present invention's concept. Simple deductions or substitutions should be considered within the scope of patent protection for the present invention as defined by the submitted claims.

Claims

1. An air duct structure of an air purifier, characterized in that: include: The air inlet duct is formed by the support, the inner surface of the filter element and the bottom of the lower shell. The lower shell surface is provided with an air inlet hole. The filter element is annular and extends in the vertical direction. The filter element is installed inside the lower shell. The upper part of the lower shell is provided with an annular first guide wall extending inward. The support is located at the upper end of the filter element and is provided with a communication hole. The air supply duct is formed by the upper shell, the first guide wall and the support. The upper shell is installed above the lower shell. The top of the upper shell is provided with an air outlet. A wind wheel is rotatably arranged inside the upper shell. The wind wheel is coaxially arranged with the air inlet duct. The air inlet duct is connected to the air supply duct through the connecting hole, and the air supply duct is connected to the air outlet.

2. The air duct structure of the air purifier according to claim 1, characterized in that: A second guide wall is provided at the bottom of the wind wheel. The second guide wall is annular and is arranged around the circumference of the wind wheel. The second guide wall gradually tilts upward from its inner circle to its outer circle.

3. The air duct structure of the air purifier according to claim 2, characterized in that: The second guide wall is an upwardly convex arc surface.

4. The air duct structure of the air purifier according to claim 3, characterized in that: The first guide wall extends toward the center of the lower shell and gradually tilts downward. The first guide wall and the second guide wall have the same tilt direction and the same curvature.

5. The air duct structure of the air purifier according to claim 4, characterized in that: The curvature of the first guide wall is between greater than or equal to 30 degrees and less than or equal to 45 degrees.

6. The air duct structure of the air purifier according to claim 2, characterized in that: A third guide wall is provided on the top of the wind wheel. The third guide wall is gradually inclined upward from the center of the wind wheel. A plurality of blades are provided between the third guide wall and the second guide wall.

7. The air duct structure of the air purifier according to claim 1, characterized in that: The bottom surface of the first guide wall is fixedly connected to the support via a fastener, and the bottom end of the first guide wall abuts against the upper surface of the support.

8. The air duct structure of the air purifier according to claim 7, characterized in that: A stop rib extends upward from the upper surface of the support, and the outer diameter of the stop rib is smaller than the inner diameter of the first guide wall.

9. The air duct structure of the air purifier according to any one of claims 1 to 8, characterized in that: The first guide wall and the lower shell are integrally formed.

10. The air duct structure of the air purifier according to any one of claims 1 to 8, characterized in that: An annular groove is formed on the upper surface of the lower shell, and an annular protrusion is formed on the lower surface of the upper shell. The annular protrusion can be inserted into the annular groove and connected to each other through a fastener.

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