Dust collector motor outlet noise reduction inner fan cover structure
By designing a conical inner fan shroud structure and connecting it with thermally conductive adhesive, the noise and heat dissipation problems at the vacuum cleaner motor outlet were solved, achieving the effects of noise reduction, improved heat dissipation, and enhanced portability.
Patent Information
- Application Number
- CN202422937638.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Traditional vacuum cleaner motor outlets lack noise reduction and heat dissipation design, resulting in increased noise and poor heat dissipation. In addition, the complex connection method can easily damage electronic components.
A conical inner fan shroud structure is designed, coated with thermally conductive adhesive and in contact with the motor PCB board. The thermally conductive adhesive conducts heat and connects to the stator, replacing the traditional bolt connection. Lightweight aluminum metal material is used.
It effectively reduces noise, improves heat dissipation efficiency, simplifies the assembly process, protects electronic components, and enhances the portability and energy efficiency of the vacuum cleaner.
Smart Images
Figure CN223695772U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical technology, specifically a noise-reducing inner fan cover structure for the outlet of a vacuum cleaner motor. Background Technology
[0002] Vacuum cleaners are essential tools for modern household cleaning, and their performance and user experience are directly related to motor efficiency and noise control. Research has found that vacuum cleaner noise primarily originates from the aerodynamic noise at the air outlet. However, in traditional vacuum cleaner motor designs, the motor outlet often... Figure 1 As shown, there is a lack of specific design for noise reduction and heat dissipation, with high-speed airflow directly hitting the motor PCB board. This causes two problems: firstly, the airflow creates eddies between capacitors and other electronic components on the board, preventing circulation and heat dissipation, leading to poor cooling and increased susceptibility of internal motor components to temperature-related performance degradation; secondly, the generated eddies produce broadband airflow noise, causing a sharp increase in overall noise. Furthermore, the connection between the motor and the PCB board is often secured with bolts, which not only increases assembly complexity but also risks damaging electronic components due to uneven stress. Utility Model Content
[0003] The purpose of this invention is to provide a noise-reducing inner fan cover structure for the outlet of a vacuum cleaner motor, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A noise-reducing inner fan shroud structure for a vacuum cleaner motor outlet includes an inner fan shroud that is conical in shape and has a boss structure. The size and dimensions of the boss structure are customized based on the size and arrangement of the vacuum cleaner motor PCB board and its capacitors. One side of the inner fan shroud is coated with thermally conductive adhesive, which makes partial contact with the capacitors on the vacuum cleaner motor PCB board. The thermally conductive adhesive completely fills the space between the vacuum cleaner motor PCB board and the inner fan shroud. The other side of the inner fan shroud is directly connected to the stator of the vacuum cleaner motor via stator thermosetting adhesive.
[0006] In a preferred embodiment of this utility model, the boss generatrix of the inner hood is an arc, and the diameter of the arc is in a certain ratio to the diameter of the vacuum cleaner motor PCB board, preferably in the range of 0.1 to 1.2.
[0007] In a preferred embodiment of this utility model, the inner hood has a certain thickness, preferably between 0.3 mm and 3 mm.
[0008] In a preferred embodiment of this utility model, the inner shroud is made of lightweight aluminum metal structure.
[0009] The additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the description, or can be learned by practice of the present application.
[0010] The inner wind cover is designed in a conical or boss shape, and the shape and size thereof are mainly customized and designed according to the size and arrangement of the capacitors on the PCB. This design can not only effectively guide the airflow and reduce the noise generated by turbulence, but also ensure that there is enough space around the capacitors for heat dissipation, thereby avoiding the influence of the performance of the capacitors due to overheating.
[0011] The surface treatment of the wind receiving surface: the wind receiving surface of the inner wind cover is polished or polished by high-precision polishing process, so as to ensure that the surface is smooth and flawless, thereby greatly reducing the wind resistance, improving the airflow passing efficiency, and further reducing the noise level.
[0012] Thermal conductive glue connection design: high-performance thermal conductive glue is coated on one side of the inner wind cover and directly contacts the capacitor. This design not only realizes electrical connection, but also quickly transfers the heat generated by the capacitor to the inner wind cover through the high-efficiency heat conduction performance of the thermal conductive glue, and then dissipates heat through natural convection or forced air cooling of the inner wind cover, thereby effectively avoiding overheating of the capacitor.
[0013] Stator glue connection structure: the other side of the inner wind cover is directly connected with the motor stator by using stator glue, instead of the traditional PCB connection structure. This connection method not only simplifies the assembly process, but also avoids the uneven stress problem caused by bolt connection, thereby effectively protecting the electronic components inside the motor from damage.
[0014] Lightweight material selection: the inner wind cover is made of lightweight aluminum metal structure. These materials not only have good heat conduction performance and can effectively dissipate the heat generated during the operation of the motor, but also reduce the overall weight due to their lightweight characteristics, thereby improving the portability and energy efficiency ratio of the dust collector. BRIEF DESCRIPTION OF DRAWINGS
[0015] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
[0016] Figure 1 A stereo view of a dust collector motor outlet noise reduction inner wind cover structure Figure 1 ;
[0017] Figure 2 A stereo view of a dust collector motor outlet noise reduction inner wind cover structure Figure 2 ;
[0018] Figure 3 A sectional view of a dust collector motor outlet noise reduction inner wind cover structure Figure 1 ;
[0019] Figure 4 A kind of inner air baffle structure of dust catcher motor outlet noise reduction Figure 2 .
[0020] In the figure: 1-inner air baffle, 2-dust catcher motor PCB board, 3-capacitor, 4-heat-conducting glue, 5-stator heat curing glue, 6-stator of dust catcher motor. DETAILED DESCRIPTION
[0021] The embodiments of the present application are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.
[0022] Please refer to Figures 1-4 , an inner air baffle structure of dust catcher motor outlet noise reduction, comprising an inner air baffle 1, which is conical in shape and has a boss structure. The size of the boss structure is designed mainly according to the size and arrangement of the dust catcher motor PCB board 2 and the capacitor 3 thereon to ensure the smoothness and stability of the airflow at the motor outlet, effectively reduce turbulence, and at the same time ensure that the heat dissipation performance of the PCB board and the capacitor is not affected, and at the same time ensure good heat dissipation performance of the PCB board and the capacitor;
[0023] The wind receiving surface of the inner air baffle 1 is treated to be smooth and flawless to reduce wind resistance and reduce noise when the dust catcher motor is running;
[0024] The inner air baffle 1 is coated with heat-conducting glue 4 on one side, which is in direct contact with the capacitor 3 on the dust catcher motor PCB board to realize electrical connection and efficiently conduct the heat generated by the capacitor to the inner air baffle 1. The heat-conducting glue 4 is fully filled between the dust catcher motor PCB board 2 and the inner air baffle 1, and the other side of the inner air baffle 1 is directly connected to the stator 6 of the dust catcher motor through the stator heat curing glue 5. This connection method eliminates the traditional PCB board connection structure and avoids the uneven stress problem that may be caused by bolt connection, thereby protecting the electronic components inside the motor from damage;
[0025] The boss generatrix of the inner air baffle 1 is a circular arc line, and the circular arc diameter has a certain ratio with the diameter of the dust catcher motor PCB board 2. The ratio is preferably in the range of 0.1-1.2, and the ratio of the circular arc diameter to the diameter of the motor PCB board 2 is preferably 0.8. In this embodiment, the diameter of the dust catcher motor PCB board 2 is 60 mm, so the circular arc diameter of the boss is 48 mm. This design ratio ensures smooth airflow while ensuring compactness and aesthetics of the structure;
[0026] The inner wind cover 1 has a certain thickness, preferably 0.3mm-3mm, and the thickness of the inner wind cover 1 is set to 0.8mm, which not only ensures the strength of the structure, but also avoids the problem of increasing wind resistance due to excessive thickness; the material of the inner wind cover 1 is a lightweight aluminum metal structure, the selection of this material not only has good heat conduction performance, but also facilitates heat dissipation, and the lightweight property reduces the overall weight of the dust collector, improves the portability and energy efficiency ratio.
[0027] The working principle of the utility model is: through the inner wind cover structure design of the embodiment, the airflow smoothness and stability of the dust collector motor outlet are significantly improved, and the noise level is effectively reduced; at the same time, the improvement of the motor heat dissipation efficiency also prolongs the service life of the motor, improves the overall performance of the dust collector and user experience; in addition, the application of lightweight material further improves the portability and energy efficiency ratio of the dust collector, making it more in line with the needs of modern families for dust collectors.
[0028] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.
Claims
1. A dust cleaner motor outlet noise reduction inner air cover structure, characterized in that: The application relates to a dust collector motor inner fan cover, which comprises an inner fan cover (1) shaped as a cone and provided with a boss structure, the size of the boss structure being customized according to the size and arrangement of a dust collector motor PCB (2) and a capacitor (3) thereon, one side of the inner fan cover (1) being coated with heat-conducting glue (4) which is in direct contact with the capacitor (3) on the dust collector motor PCB, the heat-conducting glue (4) being filled between the dust collector motor PCB (2) and the inner fan cover (1), and the other side of the inner fan cover (1) being directly connected with a stator (6) of the dust collector motor through stator heat-setting glue (5).
2. A dust cleaner motor outlet noise reduction inner air cover structure according to claim 1, characterized in that, The boss generatrix of the inner fan cover (1) is a circular arc line, the circular arc diameter and the diameter of the dust collector motor PCB (2) have a certain ratio, and the ratio ranges from 0.1 to 1.
2.
3. The dust catcher motor outlet noise reduction inner air cover structure according to claim 1, characterized in that, The inner fan cover (1) has a certain thickness, and the thickness ranges from 0.3 mm to 3 mm.
4. The dust catcher motor outlet noise reduction inner air cover structure according to claim 1, characterized in that, The material of the inner fan cover (1) is a lightweight aluminum metal structure.