Multi-wind-direction air duct structure and air purifier

Abstract

The utility model provides a multi-wind-direction air duct structure and an air purifier, the multi-wind-direction air duct structure comprises a shell and a fan arranged in the shell, the shell is provided with an air inlet and an air outlet which are communicated with the outside, and the air inlet and the air outlet are communicated in the shell to form an airflow channel; a first air inlet is formed in the top of the shell, and a first fan is arranged at the lower end of the first air inlet; a second air inlet is formed in the bottom of the shell, and a second fan is arranged at the upper end of the second air inlet; the air outlet is formed in the middle of the shell. According to the multi-wind-direction air duct structure, top and bottom air inlet and middle air outlet are achieved in the mode that the two fans are coaxially arranged in the vertical direction, the air flowing rate can be greatly increased, and when the multi-wind-direction air duct structure is applied to an air purifier, on one hand, the air purification amount in unit time can be effectively increased, and the working efficiency of the air purifier is improved; and on the other hand, direct blowing to the user can be avoided through middle air outlet, and the user experience is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air purification, and in particular relates to a multi-wind direction air duct structure and an air purifier. Background Art

[0002] Traditional air purifiers are only equipped with one motor and one impeller, so the purification area and purification efficiency are relatively limited. When the purification area needs to be increased, it is generally achieved by increasing the motor speed. However, this method has extremely high requirements on motor performance, which not only greatly increases the production cost, but also causes a lot of noise at high speed, affecting the user experience.

[0003] At present, there is a design that uses dual fans coaxially arranged in the vertical direction to replace the single high-speed fan in the traditional air purifier, thereby reducing production costs and wind noise. One implementation method adopts a duct structure with air inlet in the middle and air outlet at the top and bottom. The air inlet is set in the middle of the purifier body, and an air duct is set at the top and bottom of the purifier, so that the airflows generated by the two fans do not interfere with each other. Such an air duct structure can further reduce wind noise, but the bottom air outlet will blow the dust on the ground into the air, causing a bad experience for users; another implementation method adopts a duct structure with air inlet in the middle and bottom and air outlet at the top. The air inlet is set in the middle and bottom of the purifier body, and the air outlet is set at the top of the purifier. Such an air duct structure can prevent the bottom air outlet from blowing the dust on the ground into the air, but only the top side air outlet limits the air outlet.

[0004] Therefore, it is necessary to conduct in-depth research on the air duct of the existing air purifier to solve the above problems. Utility Model Content

[0005] The utility model provides a multi-wind direction air duct structure and an air purifier, so as to solve the problems of low air duct purification area and low purification efficiency of the air purifier in the prior art solutions.

[0006] A multi-directional air duct structure comprises a shell, and a fan arranged in the shell, the shell is provided with an air inlet and an air outlet connected to the outside, the air inlet and the air outlet are connected inside the shell to form an air flow channel; a first air inlet is provided on the top of the shell, and a first fan is provided at the lower end of the first air inlet; a second air inlet is provided at the bottom of the shell, and a second fan is provided at the upper end of the second air inlet; the air outlet is provided in the middle of the shell.

[0007] Preferably, a first filter element is provided between the first air inlet and the first fan, and a second filter element is provided between the second air inlet and the second fan.

[0008] Preferably, the air outlet is provided with a third filter element, the top of the third filter element abuts against the first fan, and the bottom of the third filter element abuts against the second fan.

[0009] Preferably, the air outlet is arranged on at least two side circumferential surfaces of the shell, and the airflow generated by the fan is discharged along the circumferential direction of the shell.

[0010] Preferably, the angle between the air outlet direction of the air outlet and the horizontal direction is -60°-60°.

[0011] Preferably, the first fan, the first filter element, the second fan, the second filter element, and the third filter element are coaxially arranged in the vertical direction in the housing.

[0012] Preferably, the cross-sectional area of ​​the airflow generated by the first fan and the second fan is smaller than the cross-sectional area of ​​the third filter element.

[0013] Preferably, the first filter element and the second filter element include HEPA filters; and / or the third filter element includes carbon bricks.

[0014] Preferably, the first fan and / or the second fan is a centrifugal fan.

[0015] The utility model also provides an air purifier, comprising the multi-wind direction air duct structure described in any one of the above technical solutions.

[0016] The utility model has the following beneficial effects:

[0017] The utility model provides a multi-directional air duct structure, including a shell, and a fan arranged in the shell, the shell is provided with an air inlet and an air outlet connected to the outside, the air inlet and the air outlet are connected inside the shell to form an airflow channel; the shell is provided with a first air inlet at the top, and a first fan is provided at the lower end of the first air inlet; the shell is provided with a second air inlet at the bottom, and a second fan is provided at the upper end of the second air inlet; the air outlet is arranged in the middle of the shell. The multi-directional air duct structure of the utility model realizes top and bottom air inlet and middle air outlet by coaxially arranging two fans in the vertical direction, which can greatly improve the air flow rate. When applied to an air purifier, it can effectively increase the amount of air purification per unit time and improve the working efficiency of the air purifier on the one hand; on the other hand, the middle air outlet can avoid direct blowing on the user, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art description. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In addition, in the drawings, the same parts are marked with the same reference numerals, and the drawings are not drawn according to the actual scale.

[0019] Figure 1 This is a cross-sectional structural diagram of a multi-wind direction air duct structure of a specific embodiment of the utility model;

[0020] Figure 2 The figure is a schematic diagram of air flow direction of a multi-directional air duct structure according to a specific embodiment of the utility model.

[0021] Description of Figure Numbers

[0022] 100-Multi-directional wind duct structure;

[0023] 110-housing;

[0024] 120-first air inlet;

[0025] 130-first fan;

[0026] 140-first filter element;

[0027] 150-second air inlet;

[0028] 160-second fan;

[0029] 170-second filter element;

[0030] 180-air outlet;

[0031] 190-Third filter element. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments disclosed in the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present utility model.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Specific embodiments

[0035] Please refer to Figure 1-Figure 2 A multi-directional air duct structure (100) comprises a shell (110) and a fan arranged in the shell (110); the shell (110) is provided with an air inlet and an air outlet (180) which are connected to the outside, and the air inlet and the air outlet (180) are connected inside the shell (110) to form an air flow channel; a first air inlet (120) is provided at the top of the shell (110), and a first fan (130) is provided at the lower end of the first air inlet (120); a second air inlet (150) is provided at the bottom of the shell (110), and a second fan (160) is provided at the upper end of the second air inlet (150); and the air outlet (180) is arranged in the middle of the shell (110).

[0036] Traditional air purifiers are only equipped with one motor and one impeller, so the purification area and purification efficiency are relatively limited. When the purification area needs to be increased, it is generally achieved by increasing the motor speed. However, this method has extremely high requirements on motor performance, which not only greatly increases the production cost, but also causes a lot of noise at high speed, affecting the user experience.

[0037] At present, there is a design that uses a dual fan coaxially arranged in the vertical direction to replace the single high-speed fan in the traditional air purifier, thereby reducing production costs and wind noise. One implementation method adopts a duct structure with air inlet in the middle and air outlet at the top and bottom. The air inlet is set in the middle of the purifier body, and an air duct is set at the top and bottom of the purifier, so that the airflows generated by the two fans do not interfere with each other. Such an air duct structure can further reduce wind noise, but the bottom air outlet will blow the dust on the ground into the air, causing a bad experience for users; another implementation method adopts a duct structure with air inlet in the middle and bottom and air outlet at the top. The air inlet is set in the middle and bottom of the purifier body, and the air outlet is set at the top of the purifier. Such an air duct structure can prevent the bottom air outlet from blowing the dust on the ground into the air, but only the top air outlet surface limits the air output.

[0038] In this embodiment, an air duct structure with top and bottom air inlet and middle air outlet is adopted, and the air inlet is arranged at the top and bottom of the shell (110), and the air outlet (180) is arranged in the middle of the shell (110). It is applied to an air purifier. On the one hand, the coaxial arrangement of the dual fans in the vertical direction greatly improves the air flow rate; on the other hand, the layout of the middle air outlet can prevent the airflow of the air outlet (180) from blowing dust on the ground into the air, thereby improving the user experience; on the third hand, the circumferential air outlet in the middle increases the air outlet area and increases the air output.

[0039] Specifically, Figure 2 As shown, when the multi-directional air duct structure (100) is started, the first fan (130) and the second fan (160) work, so that the outside air enters the multi-directional air duct structure (100) through the top first air inlet (120) and the bottom second air inlet (150), and is discharged from the middle air outlet (180). It can be understood that the shape, size, and power of the first fan (130) and the second fan (160) can be the same or different, so as to reduce the mutual interference between the two air flows entering through the first air inlet (120) and the second air inlet (150), so as to achieve the minimum wind pressure and the maximum wind speed in the air duct, thereby achieving a more efficient air volume output.

[0040] In a more preferred embodiment, a first filter element (140) is provided between the first air inlet (120) and the first fan (130), and a second filter element (170) is provided between the second air inlet (150) and the second fan (160). Specifically, the first filter element (140) and the second filter element (170) are respectively provided at the first air inlet (120) and the second air inlet (150) to perform preliminary filtration on the air entering the multi-directional air duct structure (100), thereby preventing large particles of pollutants from entering the multi-directional air duct structure (100) and causing damage to the fan.

[0041] In a more preferred embodiment, the air outlet (180) is provided with a third filter element (190), the top of the third filter element (190) is in contact with the first fan (130), and the bottom is in contact with the second fan (160). Specifically, the third filter element (190) is provided at the air outlet (180) to perform secondary filtration on the discharged air; it can be understood that the third filter element (190) has a better filtering effect than the first filter element (140) and the second filter element (170), so as to achieve efficient purification of the air.

[0042] In a more preferred embodiment, the air outlet (180) is provided on at least two side surfaces of the shell (110), and the airflow generated by the fan is discharged along the circumference of the shell (110) to increase the air outlet area, thereby increasing the air outlet volume. Specifically, when the cross-section of the shell (110) is square, the air outlet (180) can be provided on two side surfaces, three side surfaces, or four side surfaces of the shell (110). Preferably, when the air outlet (180) is provided on two side surfaces of the shell (110), the two side surfaces are opposite sides of the shell (110). In other embodiments, the cross-section of the shell (110) can also be other polygonal, circular, or elliptical shapes, all of which are within the protection scope of the present utility model and are not described in detail here.

[0043] In a more preferred embodiment, the air outlet direction of the air outlet (180) can be horizontal or at an angle to the horizontal. In order to reduce the wind resistance at the air outlet (180) and ensure the air outlet volume, the angle between the air outlet direction of the air outlet (180) and the horizontal direction is preferably -60°-60°.

[0044] In a more preferred embodiment, the first fan (130), the first filter element (140), the second fan (160), the second filter element (170), and the third filter element (190) are coaxially arranged in the vertical direction in the housing (110) to reduce the problem of mutual interference between the fans, so that the purification efficiency can be superimposed to the greatest extent.

[0045] In a more preferred embodiment, the airflow generated by the first fan (130) enters the third filter element (190) along the upper end surface of the third filter element (190) for filtration, and the airflow generated by the second fan (160) enters the third filter element (190) along the lower end surface of the third filter element (190) for filtration. To ensure that the airflows generated by the first fan (130) and the second fan (160) can be fully filtered by the third filter element (190), in this embodiment, the cross-sectional area of ​​the airflows generated by the first fan (130) and the second fan (160) is preferably smaller than the cross-sectional area of ​​the third filter element (190).

[0046] In a more preferred embodiment, the first filter element (140) and the second filter element (170) include HEPA filters; and / or the third filter element (190) includes carbon bricks.

[0047] In a more preferred embodiment, the first fan (130) and / or the second fan (160) are centrifugal fans.

[0048] The above are only specific embodiments of the present invention, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-directional air duct structure, comprising a housing (110), and a fan arranged in the housing (110), wherein the housing (110) is provided with an air inlet and an air outlet (180) connected to the outside, and the air inlet and the air outlet (180) are connected inside the housing (110) to form an air flow channel, characterized in that: The shell (110) is provided with a first air inlet (120) at the top, and a first fan (130) is provided at the lower end of the first air inlet (120); the shell (110) is provided with a second air inlet (150) at the bottom, and a second fan (160) is provided at the upper end of the second air inlet (150); and the air outlet (180) is provided in the middle of the shell (110).

2. The multi-directional air duct structure according to claim 1, characterized in that: A first filter element (140) is provided between the first air inlet (120) and the first fan (130), and a second filter element (170) is provided between the second air inlet (150) and the second fan (160).

3. The multi-directional air duct structure according to claim 2, characterized in that: The air outlet (180) is provided with a third filter element (190); the top of the third filter element (190) abuts against the first fan (130), and the bottom of the third filter element (190) abuts against the second fan (160).

4. The multi-directional air duct structure according to claim 1, characterized in that: The air outlet (180) is disposed on at least two side circumferential surfaces of the shell (110), and the airflow generated by the fan is discharged along the circumference of the shell (110).

5. The multi-directional air duct structure according to claim 4, characterized in that: The angle between the air outlet direction of the air outlet (180) and the horizontal direction is -60° to 60°.

6. The multi-directional air duct structure according to claim 3, characterized in that: The first fan (130), the first filter element (140), the second fan (160), the second filter element (170), and the third filter element (190) are coaxially arranged in a vertical direction inside the housing (110).

7. The multi-directional air duct structure according to claim 6, characterized in that: The cross-sectional area of ​​the airflow generated by the first fan (130) and the second fan (160) is smaller than the cross-sectional area of ​​the third filter element (190).

8. The multi-directional air duct structure according to claim 3, characterized in that: The first filter element (140) and the second filter element (170) include HEPA filters; and / or the third filter element (190) includes carbon bricks.

9. The multi-directional air duct structure according to claim 1, characterized in that: The first fan (130) and / or the second fan (160) are centrifugal fans.

10. An air purifier, characterized in that: It comprises the multi-wind direction air duct structure (100) as claimed in any one of claims 1 to 9.

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