Air purifier wind wheel damping structure

Abstract

This utility model relates to the field of air purifier technology, specifically an air purifier impeller vibration damping structure. It features a vertically arranged motor with its rotating shaft facing upwards. The rotating shaft has a positioning plate, and a lower vibration damping pad is fitted onto the shaft located on the positioning plate. A vertically arranged impeller has an inner cavity at its bottom and a top concave surface at its top. A bushing with a shaft hole is located at the center between the inner cavity and the top concave surface. The shaft hole fits into the rotating shaft. The motor is housed in the inner cavity. An upper vibration damping pad is fitted onto the rotating shaft located in the top concave surface. A locking nut is screwed onto the rotating shaft in the top concave surface, causing the upper and lower vibration damping pads to form a clamping buffer and vibration damping structure against the bushing. This utility model has advantages such as low noise and long service life.

Description

Technical Field

[0001] This utility model relates to the field of air purifiers, and in particular to a fan structure for an air purifier. Background Technology

[0002] When an air purifier is running, the motor drives the fan to rotate through its power output shaft. Since the motor's power output shaft is made of metal and the fan is made of hard plastic or metal, a rigid connection is formed between the two. The vibration generated by the motor during operation is transmitted to the fan through the power output shaft and causes resonance, resulting in a relatively loud noise when the air purifier is running.

[0003] Chinese utility model patent application number 201020670333.2, entitled "An Impeller for an Air Purifier," discloses a technical solution in which a motor shaft sleeve is fitted on the outside of the motor shaft, and a rubber washer is placed between the impeller body and the motor shaft sleeve. A connecting piece connects the rubber washer to the impeller body, thus isolating the impeller body from the motor shaft and reducing the overall operating noise. However, this technical solution has the following technical problems in use:

[0004] First, to accommodate the rubber gasket and motor bushing, the shaft hole on the impeller body needs to be relatively large. This significantly damages the mechanical strength of the impeller body, resulting in poor mechanical strength and a tendency for cracks to form at the shaft hole, thus shortening the impeller body's service life. Second, the space at the shaft hole is relatively narrow, making it difficult and inefficient to connect the rubber gasket to the impeller body using a connecting piece. Furthermore, when connecting the impeller to the motor, the distance between the motor and the impeller shaft hole is relatively long, requiring a longer shaft to connect the motor and the shaft hole. Over time, this shaft is prone to bending, leading to increased motor vibration and noise.

[0005] Given the above-mentioned shortcomings of the existing technology, the applicant believes it is necessary to make technical improvements to provide an air purifier impeller vibration damping structure that is easy to assemble, has a longer service life, and produces lower noise. Utility Model Content

[0006] The purpose of this invention is to solve the above-mentioned problems and shortcomings by providing a vibration damping structure for an air purifier impeller. Firstly, the concave cavity and the concave top surface allow the motor to be housed within the concave cavity, minimizing the length of the shaft and effectively preventing shaft deflection, ensuring smooth motor operation, and thus reducing motor vibration. Secondly, the bushing enhances the mechanical strength of the connection between the impeller and the shaft, extending the impeller's service life. Furthermore, the motor and impeller are assembled together by rotating the locking nut, forming an upper and lower clamping buffer and vibration damping structure, which is very convenient to operate and has high production efficiency.

[0007] The technical solution of this utility model is implemented as follows: an air purifier impeller shock absorption structure, characterized in that it includes a vertically arranged motor with its rotating shaft facing upwards, a positioning plate on the rotating shaft, and a lower shock-absorbing rubber pad fitted on the rotating shaft located on the positioning plate; a vertically arranged impeller, the bottom and top of the impeller respectively having an inner concave cavity and a top concave surface, and a bushing part with a shaft hole in the center between the inner concave cavity and the top concave surface; the shaft hole is fitted with the rotating shaft, the motor is accommodated in the inner concave cavity, and an upper shock-absorbing rubber pad is fitted on the rotating shaft located in the top concave surface, and a locking nut is screwed onto the rotating shaft located in the top concave surface, so that the upper and lower shock-absorbing rubber pads form an upper and lower clamping buffer shock absorption structure against the bushing part.

[0008] Furthermore, the central part between the concave cavity and the top concave surface is also provided with a hollow hole arranged around the bushing portion.

[0009] Furthermore, the wind turbine also includes a top ring transition section, a bottom ring section, and a number of blades arranged in a ring at equal intervals between the top ring transition section and the bottom ring section, wherein the blades are trapezoidal in shape, wider at the top and narrower at the bottom.

[0010] Furthermore, the top surface of the bushing is provided with a gasket cavity, in which a limiting gasket is installed, and the rotating shaft is provided with a corresponding limiting side that cooperates with the limiting gasket.

[0011] Furthermore, the motor is also equipped with a mounting bracket.

[0012] Furthermore, the bushing portion is provided with multiple reinforcing ribs on its outer periphery.

[0013] The beneficial effects of this utility model are:

[0014] First, the bottom of the impeller has a concave cavity, which allows the motor to be installed inside. Simultaneously, the concave design of the top surface of the impeller minimizes the distance between the motor and the top surface of the impeller, reducing the shaft length. This prevents the shaft from easily bending even after prolonged use, contributing to stable motor operation, reduced noise, and lower energy consumption. Furthermore, the impeller and motor can be assembled more compactly, saving space and resulting in a smaller air purifier.

[0015] Secondly, the bushing design enhances the strength of the connection between the impeller and the shaft, preventing cracking at the shaft hole and extending the impeller's lifespan. It also allows the impeller to be assembled more stably with the shaft, further reducing noise during air purifier operation.

[0016] Furthermore, by tightening the nut and positioning plate, the upper and lower shock-absorbing pads are fixed between the rotating shaft and the impeller, forming an upper and lower clamping buffer and shock-absorbing structure. In this way, the shock-absorbing pads can absorb the vibration energy of the rotating shaft in all directions, thus making the noise of the air purifier very low during operation. Moreover, the operation is very convenient by screwing the nut from the top, and the production efficiency is very high.

[0017] Finally, the motor and the impeller are installed vertically together, with the impeller positioned above the motor. During operation, the center of gravity of the impeller presses down against the positioning plate, making it less likely for the impeller to shift when rotating at high speed. This allows both the motor and the impeller to run very smoothly with less vibration and less noise, thus helping to reduce the noise of the air purifier. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0020] Figure 3 This is a cross-sectional structural diagram of the wind turbine in this utility model.

[0021] Figure 4 This is a bottom view of the wind turbine in this utility model. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0023] like Figure 1 , 2As shown in Figure 3, an air purifier impeller vibration damping structure, in order to achieve the purpose proposed by this utility model, includes a motor 1 arranged vertically with a rotating shaft 11 facing upwards. The rotating shaft 11 is provided with a positioning plate 12, and a lower shock-absorbing rubber pad 3 is also fitted on the rotating shaft 11 located on the positioning plate 12; an impeller 2 arranged vertically, the bottom and top of the impeller 2 are respectively provided with an inner cavity 21 and a top concave surface 22, and a bushing part 23 with a shaft hole 231 is also provided in the center between the inner cavity 21 and the top concave surface 22; the shaft hole 231 is fitted with the rotating shaft 11, the motor 1 is accommodated in the inner cavity 21, and an upper shock-absorbing rubber pad 4 is also fitted on the rotating shaft 11 located in the top concave surface 22. By screwing a locking nut 5 on the rotating shaft 11 located in the top concave surface 22, the upper shock-absorbing rubber pad 4 and the lower shock-absorbing rubber pad 3 form an upper and lower clamping buffer and vibration damping structure for the bushing part 23. The top surface of the impeller 2 is recessed downwards, forming a concave cavity 21 at the bottom and a concave top surface 22. During assembly, the motor 1 can be placed within the concave cavity 21, resulting in a very short distance between the motor 1 and the bushing 23. This minimizes the size of the rotating shaft 11, preventing it from flexing during use and ensuring stable high-speed rotation of the impeller 2. Furthermore, the center of gravity of the impeller 2 is pressed against the positioning plate 12, preventing shifting even during high-speed rotation. This allows the air purifier to maintain low-decibel operation even with prolonged use. The upper and lower clamping shock-absorbing structure allows the upper and lower shock-absorbing pads 4 and 3 to more comprehensively absorb vibration energy from the rotating shaft 11, preventing resonance in the impeller 2 and making the air purifier operate more quietly and comfortably.

[0024] like Figures 1 to 4 As shown, the center portion between the concave cavity 21 and the top concave surface 22 is also provided with a perforated hole 24 arranged around the bushing portion 23. This can reduce the weight of the impeller 2, thereby reducing the load on the motor and helping to reduce the noise during motor operation.

[0025] like Figure 3 As shown, the impeller 2 also includes a top ring transition section 25, a bottom ring section 26, and a plurality of blades 27 arranged in a ring at equal intervals between the top ring transition section 25 and the bottom ring section 26. The blades 27 are trapezoidal in shape, wider at the top and narrower at the bottom. These blades 27 form a compression structure with a large inlet and a small outlet, which allows the air to be compressed inside the impeller 2, resulting in a higher airflow velocity from the air purifier and promoting indoor air circulation.

[0026] like Figure 2 , 3As shown, the top surface of the bushing portion 23 is also provided with a gasket cavity 232, in which a limiting gasket 28 is installed. Correspondingly, the rotating shaft 11 is provided with a limiting side surface 110 that cooperates with the limiting gasket 28. In this way, through the further limitation of the limiting side surface 110 and the limiting gasket 28, the rotating shaft 11 can drive the impeller 2 to rotate more stably, thereby helping to reduce the noise of the air purifier during operation.

[0027] like Figure 2 As shown, in order to install the motor 1 inside the air purifier, the motor 1 is also provided with a mounting bracket 6.

[0028] like Figure 3 , 4 As shown, to enhance the mechanical strength of the bushing portion 23, multiple reinforcing ribs 233 are provided on the outer periphery of the bushing portion 23. Preferably, the bottom end of the bushing portion 23 extends into the concave cavity 21, and the reinforcing ribs 233 are integrally connected with the top cavity wall of the concave cavity 21, thereby further enhancing the mechanical strength of the bushing portion 23, making the connection between the impeller 2 and the rotating shaft 11 more stable, the air purifier operates more smoothly, and the noise is lower.

[0029] like Figure 3 As shown, the top of the bushing 23 is positioned above the center of the concave surface 22. This arrangement of the gasket cavity 232 does not compromise the mechanical strength of the impeller 2 body, thereby helping to make the connection between the impeller 2 and the rotating shaft 11 more stable, which in turn helps to reduce the noise during the operation of the air purifier.

Claims

1. A vibration damping structure for an air purifier impeller, characterized in that... include A motor (1) is arranged vertically with a rotating shaft (11) facing upwards. The rotating shaft (11) is provided with a positioning plate (12), and the rotating shaft (11) located on the positioning plate (12) is also fitted with a lower shock-absorbing rubber pad (3). A vertically arranged wind turbine (2) has an inner cavity (21) at the bottom and a top concave surface (22) at the top. A bushing part (23) with a shaft hole (231) is also provided in the center between the inner cavity (21) and the top concave surface (22). The shaft hole (231) is fitted with the rotating shaft (11), the motor (1) is housed in the concave cavity (21), and an upper shock-absorbing pad (4) is fitted on the rotating shaft (11) located in the top concave surface (22). A locking nut (5) is screwed onto the rotating shaft (11) located in the top concave surface (22) so that the upper shock-absorbing pad (4) and the lower shock-absorbing pad (3) form an upper and lower clamping buffer and shock-absorbing structure for the bushing part (23).

2. The air purifier impeller vibration damping structure according to claim 1, characterized in that: The central part between the concave cavity (21) and the top concave surface (22) is also provided with a hollow hole (24) arranged around the bushing part (23).

3. The air purifier impeller vibration damping structure according to claim 2, characterized in that: The wind turbine (2) also includes a top ring transition section (25), a bottom ring section (26), and a number of blades (27) arranged in a ring at equal intervals between the top ring transition section (25) and the bottom ring section (26). The blades (27) are trapezoidal in shape, wider at the top and narrower at the bottom.

4. The air purifier impeller vibration damping structure according to claim 1, characterized in that: The top surface of the bushing (23) is also provided with a gasket cavity (232), in which a limiting gasket (28) is installed, and the rotating shaft (11) is provided with a limiting side surface (110) that cooperates with the limiting gasket (28).

5. The air purifier impeller vibration damping structure according to claim 1, characterized in that: The motor (1) is also provided with a mounting bracket (6).

6. The air purifier impeller vibration damping structure according to claim 1, characterized in that: The bushing (23) is also provided with multiple reinforcing ribs (233) on its outer periphery.

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