Fan with dust collection function

Abstract

The utility model relates to a fan with a dust collection function, which comprises a fan body, and the fan body comprises a fan shell and an electric brush assembly arranged on the fan shell; the dust removal assembly comprises a dust removal shell and a dust suction fan arranged in the dust removal shell, the dust removal shell is communicated with the fan shell, the dust suction fan is arranged right opposite to the electric brush assembly and sucks air right opposite to the electric brush assembly, the dust removal shell is provided with dust suction holes, and the dust suction holes are formed in the side, opposite to the electric brush assembly, of the dust suction fan. Carbon powder in the fan is dedusted and prevented from being accumulated in the fan, so that the risks of short circuit and arc discharge of an internal circuit of the fan are reduced.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a fan with a dust collection function. Background Technology

[0002] In existing technologies, permanent magnet synchronous wind turbines typically consist of core components such as an upper support, stator core, rotor core, brush assembly, stator impeller, shroud, moving impeller, stator winding, and rotor winding. The brush assembly, as a key conductive component, achieves current conduction between the rotor and stator through physical contact. Traditional brush assemblies usually contain carbon materials, which continuously generate carbon dust due to frictional wear during long-term operation. As carbon dust gradually accumulates inside the wind turbine, it may adhere to the insulation layer or circuit connections, reducing electrical insulation performance, causing localized short circuits or arc discharges, and in severe cases, directly burning out the wiring, leading to the wind turbine's failure. Summary of the Invention

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the traditional brush assembly of the existing fan will produce carbon powder, which accumulates and adheres to the circuit or insulation layer, reducing the electrical insulation performance inside the fan. In order to provide a fan with a dust collection function, the carbon powder inside the fan is removed by dust removal treatment, thereby avoiding the accumulation of carbon powder inside the fan and reducing the risk of short circuit and arc discharge in the internal circuit of the fan.

[0004] To solve the above-mentioned technical problems, this utility model provides a fan with a dust collection function, comprising,

[0005] The fan body includes a fan housing and a brush assembly disposed within the fan housing;

[0006] A dust removal assembly includes a dust removal housing and a suction fan disposed within the dust removal housing. The dust removal housing is connected to the fan housing. The suction fan is positioned directly opposite the brush assembly and draws air directly from the brush assembly. The dust removal housing has a suction hole located on the side of the suction fan relative to the brush assembly.

[0007] In one embodiment of the present invention, the dust removal housing includes a neck and a head communicating with the neck. The neck communicates with the fan housing. The dust suction fan is disposed inside the head, and the head is provided with the dust suction hole.

[0008] In one embodiment of the present invention, a plurality of suction holes are further included, which are arranged in a ring around the central axis of the head.

[0009] In one embodiment of the present invention, an annular blocking portion is provided at the junction of the neck and the head, and the annular blocking portion extends along the axial direction of the neck toward the side where the dust extraction fan is provided.

[0010] In one embodiment of the present invention, a rotor assembly disposed within the fan housing is further included, wherein the rotor of the rotor assembly extends through the neck into the head, and the rotor is coaxially connected to the dust extraction fan.

[0011] In one embodiment of this utility model, a gap is provided between the periphery of the vacuum fan and the inner wall of the head, and the gap is directly opposite the vacuum hole.

[0012] In one embodiment of this utility model, both the neck and the head are cylindrical, and the neck, the head, and the fan housing are coaxially connected.

[0013] In one embodiment of this invention, the neck and the head are connected by a trumpet-shaped transition section.

[0014] In one embodiment of the present invention, the head includes a cylindrical body and a sealing cover. One end of the cylindrical body is connected to the neck, and the other end of the cylindrical body is sealed by the sealing cover. The sealing cover is interference-fitted with the cylindrical body, and the sealing cover is provided with the dust suction hole.

[0015] In one embodiment of this utility model, a dust suction hole is provided at the center of the sealing cover.

[0016] In one embodiment of the present invention, the dust removal component is located at the end of the fan body opposite to the end where the air inlet is provided.

[0017] In one embodiment of the present invention, the sealing cover is embedded in the cylindrical body, and the sealing cover is provided with an annular abutment portion, which abuts against the end face of the cylindrical body along the axial direction of the cylindrical body.

[0018] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0019] The dust-collecting fan of this invention uses a dust-collecting component to remove toner from the fan housing, preventing toner accumulation inside the fan and reducing the risk of short circuits in the internal circuitry. The suction fan draws air directly into the brush assembly, expelling toner generated by the brush assembly through the suction port, thus improving dust collection efficiency. The suction fan is positioned inside the dust-collecting housing, drawing toner into it and preventing dust from spreading to other areas inside the fan, ensuring efficient toner collection. A directional airflow path is formed between the suction port and the suction fan, ensuring efficient dust removal from the dust-collecting housing. Attached Figure Description

[0020] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of the fan with dust collection function in a preferred embodiment of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the cross-sectional view of the fan AA with dust collection function shown;

[0023] Figure 3 for Figure 2 Another structural schematic diagram of the cross-sectional view shown;

[0024] Figure 4 for Figure 2 A schematic diagram of the structure of the enlarged view at point B shown.

[0025] Explanation of reference numerals in the accompanying drawings: 1. Fan body; 11. Fan housing; 12. Brush assembly; 13. Rotor; 2. Dust removal assembly; 21. Dust removal housing; 211. Head; 211b. Cylindrical body; 211a. Sealing cover; 211a1. Annular abutment part; 212. Neck; 213. Transition section; 214. Annular blocking part; 215. Receiving groove; 216. Gap; 22. Dust suction fan; 23. First dust suction hole; 24. Second dust suction hole; 3. Air inlet; 4. Air outlet. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0027] Reference Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment of this utility model, a fan with a dust collection function is disclosed, comprising,

[0028] The fan body 1 includes a fan housing 11 and a brush assembly 12 disposed within the fan housing 11;

[0029] The dust removal assembly 2 includes a dust removal housing 21 and a dust extraction fan 22 disposed within the dust removal housing 21. The dust removal housing 21 is connected to the fan housing 11. The dust extraction fan 22 is positioned directly opposite the brush assembly 12 and draws air directly from the brush assembly 12. The dust removal housing 21 is provided with a first dust extraction hole 23, which is located on the side of the dust extraction fan relative to the brush assembly 12.

[0030] In this embodiment, the blower with a dust collection function, when the blower body 1 is started, drives the dust collection fan 22 to rotate synchronously, forming a negative pressure at the brush assembly 12. The toner inside the blower housing 11 is accurately and fully sucked into the dust collection housing 21, preventing the toner from spreading inside the blower housing 11. Finally, the toner is sprayed out of the dust collection housing 21 from the dust collection hole, realizing the toner dust removal of the blower body 1, avoiding the accumulation of toner inside the blower housing 11, and improving the electrical insulation performance of the internal circuit of the blower.

[0031] Reference Figure 2 As shown, in one embodiment of this utility model, the fan body 1 is a conventional fan, and specifically includes core components such as stator core, rotor core, brush assembly 12, stator impeller, fan cover, moving impeller, stator winding and rotor winding, which are disposed in the fan housing 11.

[0032] Reference Figure 2 As shown, in one embodiment of this utility model, the dust removal housing consists of a neck 212 and a head 211 connected to the neck 212. The neck 212 is connected to the fan housing 11. The dust suction fan 22 is disposed inside the head 211. After the dust suction fan 22 rotates, the toner passes through the neck 212 and enters the head 211. The cross-section of the neck 212 is smaller than the cross-section of the head 211, so the airflow velocity inside the neck 212 is increased, generating a stronger negative pressure suction force inside the fan housing 11, ensuring that the toner enters the head 211 efficiently and quickly. The head 211 is provided with a first dust suction hole 23, and the toner inside the head 211 is sprayed out from the first dust suction hole 23.

[0033] Reference Figure 3 As shown, in one embodiment of the present invention, eight first suction holes 23 are also included. The eight first suction holes 23 are distributed in a ring around the central axis of the head 211, which can evenly disperse the airflow and ensure that the toner is evenly sprayed out from the eight first suction holes 23, preventing the risk of clogging of a single first suction hole 23.

[0034] Reference Figure 2As shown, in one embodiment of the present invention, an annular blocking portion 214 is provided at the junction of the neck 212 and the head 211. The annular blocking portion 214 extends along the axial direction of the neck 212 toward the side where the dust extraction fan 22 is provided. The annular blocking portion 214 is used to block the carbon powder deposited in the head 211 and prevent the carbon powder from flowing back into the fan housing 11 due to airflow turbulence.

[0035] Reference Figure 2 As shown, in one embodiment of the present invention, a rotor assembly is further provided in the fan housing 11. The rotor 13 of the rotor assembly passes through the neck 212 and extends into the head 211. The rotor 13 is coaxially connected to the dust collection fan 22. Therefore, without the need for an additional motor, the dust collection fan 22 is synchronously driven by the power of the fan body 1 to generate dust removal negative pressure, thereby reducing energy consumption and reducing mechanical failure points.

[0036] Reference Figure 2 As shown, in one embodiment of this utility model, a gap 216 is provided between the periphery of the vacuum fan 22 and the inner wall of the head 211. The gap 216 is directly opposite to the first suction hole 23, which can shorten the diffusion path of toner. When the airflow carrying toner passes through the gap 216, the toner particles are thrown towards the first suction hole 23 due to centrifugal force, which promotes toner separation and concentrated discharge, and reduces toner residue in the head 211.

[0037] Reference Figure 3 As shown, in one embodiment of this utility model, the neck 212 and the head 211 are both cylindrical, and the neck 212, the head 211 and the fan housing 11 are coaxially connected, which can reduce turbulence and energy loss when the airflow turns, ensure smooth airflow transition, improve dust removal efficiency and reduce fan operating noise.

[0038] Reference Figure 2 As shown, in one embodiment of the present invention, the neck 212 and the head 211 are connected by a flared transition section 213. The transition section 213 can reduce the gap 216 between the head 211 and the vacuum fan 22, thereby reducing the backflow of air from the gap 216 to the neck 212.

[0039] Reference Figure 2 As shown, in one embodiment of the present invention, a receiving groove 215 is formed between the transition section 213 and the annular blocking part 214. The carbon powder deposited at the bottom of the head 211 slides from the surface of the transition section 213 into the receiving groove 215, reducing the phenomenon of carbon powder diffusing with turbulent gas.

[0040] Reference Figure 2As shown, in one embodiment of this utility model, the head 211 includes a cylindrical body 211b and a sealing cover 211a. One end of the cylindrical body 211b is connected to the neck 212, and the other end of the cylindrical body 211b is sealed by the sealing cover 211a. The sealing cover 211a is provided with the first dust suction hole 23. The sealing cover 211a can prevent external debris from entering the fan from the port of the cylindrical body 211b, and can also discharge toner to the outside through the first dust suction hole 23. The sealing cover 211a is interference-fitted with the cylindrical body 211b, and the sealing cover 211a can be quickly disassembled and assembled.

[0041] Reference Figure 2 As shown, in one embodiment of the present invention, a second dust suction hole 24 is provided at the center of the sealing cover 211a. The second dust suction hole 24 is used to discharge the toner that has accumulated in the central area of ​​the head 211 to the outside, so as to avoid toner deposition caused by insufficient suction in the central area.

[0042] Reference Figure 4 As shown, in one embodiment of the present invention, the sealing cover 211a is embedded in the cylindrical body 211b, and the sealing cover 211a is provided with an annular abutment portion 211a1. The annular abutment portion 211a1 abuts against the end face of the cylindrical body 211b along the axial direction of the cylindrical body 211b. The sealing cover 211a is quickly positioned by the abutment of the annular abutment portion 211a1 against the end face of the cylindrical body 211b.

[0043] Reference Figure 2 As shown, in one embodiment of this utility model, the dust removal component 2 is located at the end of the fan body 1 opposite to the end where the air inlet 3 is provided. Setting the dust removal component 2 and the air inlet 3 at the two ends of the fan with the greatest distance is beneficial for the carbon powder discharged outside the dust removal housing 21 to avoid the air inlet 13.

[0044] The working principle of the dust-collecting fan described in this utility model is as follows:

[0045] After the fan starts, a negative pressure is formed at the air inlet 13, and air is drawn into the fan through the air inlet 13. After acceleration, it is ejected from the air outlet 4. At the same time, the rotor 13 drives the dust collection fan 22 to rotate synchronously, and a negative pressure is formed inside the fan housing 11. The toner generated by the brush assembly 12 is drawn into the dust collection housing 21 and finally ejected from the dust collection housing 21 through the first dust collection hole 23 and the second dust collection hole 24. Specifically, the toner passes through the neck 212, the air duct of the dust collection fan 22, and the gap 216 in sequence to reach the cylindrical body 211b. Finally, it is ejected from the dust collection housing 21 through the first dust collection hole 23 and the second dust collection hole 24, thus realizing the toner dust removal process. When cleaning the residual toner inside the dust collection housing 21, the sealing cover 211a is pulled out and the toner is manually cleaned. Finally, the sealing cover 211a is reinstalled.

[0046] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A fan with a dust extraction function, characterized in that, include, The fan body includes a fan housing and a brush assembly disposed within the fan housing; A dust removal assembly includes a dust removal housing and a suction fan disposed within the dust removal housing. The dust removal housing is connected to the fan housing. The suction fan is positioned directly opposite the brush assembly and draws air directly from the brush assembly. The dust removal housing has a suction hole located on the side of the suction fan relative to the brush assembly.

2. A fan with dust collection function according to claim 1, characterized in that, The dust removal housing includes a neck and a head that communicates with the neck. The neck communicates with the fan housing. The dust suction fan is disposed inside the head, and the head is provided with the dust suction hole.

3. A fan with a dust extraction function according to claim 2, characterized in that, It also includes a plurality of suction holes, which are arranged in a ring around the central axis of the head.

4. A fan with a dust extraction function according to claim 2, characterized in that, An annular blocking portion is provided at the junction of the neck and the head, and the annular blocking portion extends along the axial direction of the neck toward the side where the vacuum fan is located.

5. A fan with a dust extraction function according to claim 2, characterized in that, It also includes a rotor assembly disposed within the fan housing, wherein the rotor of the rotor assembly extends through the neck into the head, and the rotor is coaxially connected to the dust extraction fan.

6. A fan with a dust extraction function according to claim 2, characterized in that, A gap is provided between the periphery of the vacuum fan and the inner wall of the head, and the gap is positioned directly opposite the vacuum hole.

7. A fan with a dust extraction function according to claim 2, characterized in that, Both the neck and the head are cylindrical, and the neck, the head, and the fan housing are coaxially connected.

8. A fan with a dust extraction function according to claim 2, characterized in that, The neck and the head are connected by a trumpet-shaped transition section.

9. A fan with a dust extraction function according to claim 2, characterized in that, The head includes a cylindrical body and a sealing cover. One end of the cylindrical body is connected to the neck, and the other end of the cylindrical body is sealed by the sealing cover. The sealing cover is interference-fitted with the cylindrical body, and the sealing cover is provided with the dust suction hole.

10. A fan with a dust extraction function according to claim 9, characterized in that, The sealing cover has a dust extraction hole at its center.

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