High-speed motor capable of optimizing low-speed noise

Abstract

The utility model relates to the field of motors, in particular to a high-speed motor for optimizing low-speed noise, which comprises an air duct. The rotor assembly comprises a magnetic ring shaft, an impeller is arranged at the upper end of the magnetic ring shaft, the upper portion of the magnetic ring shaft is sleeved with a metal shaft sleeve, and the upper end and the lower end of an inner hole of the metal shaft sleeve are each coaxially and fixedly provided with a bearing. And a noise-absorbing and vibration-reducing part is integrally formed between the outer wall of the metal shaft sleeve and the inner hole of the air duct. The utility model has the beneficial effects that the noise-absorbing and vibration-reducing piece which is integrally formed is arranged between the metal shaft sleeve and the air duct, and the concentricity and high-precision fit tolerance are ensured through machining of a precise numerical control machine tool, so that not only can the concentricity and the strength at a high rotating speed be ensured, but also the noise at a low speed can be improved, and the service life of the noise-absorbing and vibration-reducing device is prolonged. The high-speed motor can effectively absorb noise and reduce vibration of large sharp sound generated in low-speed operation, and the practicability of the high-speed motor in work is improved.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a high-speed motor with optimized low-speed noise. Background Art

[0002] When the metal air duct structure on the market runs at a low speed (10000-85000r / min), the bearing and the metal air duct will produce a sharp resonance sound, which affects people's hearing. Due to the problem of injection mold precision, the plastic air duct structure on the market cannot guarantee the concentricity and matching accuracy of the product. When running at a high speed (85000-130000r / min), the rotor dynamic balance is large due to poor concentricity and matching accuracy, which will produce high-frequency abnormal sound, affecting people's hearing. In addition, due to product strength issues, it is difficult to guarantee the disposable and usability of the product, which reduces practicality. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings, the utility model provides a technical solution that can solve the above-mentioned problems.

[0004] A high-speed motor with optimized low-speed noise includes an air duct;

[0005] The air duct is a hollow cylindrical shell structure, a stator assembly is arranged at the lower part of the air duct, and a rotor assembly is arranged at the upper part of the stator assembly;

[0006] The rotor assembly includes a magnetic ring shaft, an impeller is arranged at the upper end of the magnetic ring shaft, a metal sleeve is sleeved on the upper part of the magnetic ring shaft, a bearing is coaxially fixed at the upper and lower ends of the inner hole of the metal sleeve respectively, a plurality of static guide blades are arranged evenly between the inner and outer walls of the air duct, and a noise absorbing and vibration reducing part is integrally formed between the outer wall of the metal sleeve and the inner hole of the air duct.

[0007] As a further solution of the utility model: the lower part of the inner wall of the air duct extends downward to wrap around the stator assembly.

[0008] As a further solution of the utility model: the rotor assembly also includes an elastic element sleeved on the upper part of the magnetic ring shaft, and the elastic element is arranged inside the metal sleeve and between the two bearings.

[0009] As a further solution of the utility model: the noise absorbing and vibration reducing member is made of any one of plastic, rubber and silicone or is integrally formed with the metal sleeve and the inner hole of the air duct.

[0010] As a further solution of the utility model: an adapter plate is provided at the lower end of the stator assembly.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: an integrally formed noise-absorbing and vibration-damping part is provided between the metal sleeve and the air duct, and then the concentricity and high-precision fitting tolerance are ensured by machining through precision CNC machine tools, which can not only ensure the concentricity and strength at high speed, but also take into account the improvement of noise at low speed, and can effectively absorb and reduce the loud and sharp sound generated by the high-speed motor during low-speed operation, thereby improving the practicability of the high-speed motor at work.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in this embodiment or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative labor.

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a cross-sectional view of the utility model.

[0016] As shown in the figure: 1. Air duct; 2. Magnetic ring shaft; 3. Stator assembly; 4. Rotor assembly; 5. Impeller; 6. Metal sleeve; 7. Static guide vane; 8. Noise absorption and vibration reduction part; 9. Adapter plate; 10. Elastic element; 11. Bearing. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description 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 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.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0020] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figure 1-2 , a high-speed motor with optimized low-speed noise, comprising an air duct 1;

[0022] The air duct 1 is a hollow cylindrical shell structure, a stator assembly 3 is arranged at the lower part of the air duct 1, and a rotor assembly 4 is arranged at the upper part of the stator assembly 3;

[0023] The rotor assembly 4 includes a magnetic ring shaft 2, an impeller 5 is arranged at the upper end of the magnetic ring shaft 2, a metal sleeve 6 is sleeved on the upper part of the magnetic ring shaft 2, a bearing 11 is coaxially fixed at the upper and lower ends of the inner hole of the metal sleeve 6, a plurality of static guide blades 7 are arranged evenly between the inner and outer walls of the air duct 1, and a noise absorbing and vibration reducing part 8 is integrally formed between the outer wall of the metal sleeve 6 and the inner hole of the air duct 1.

[0024] The metal sleeve 6 and the air duct 1 are injection molded into a whole by an injection molding machine, and then the entire air duct 1 is machined by a precision CNC machine tool to ensure concentricity and high-precision matching tolerance. This structure can not only ensure concentricity and strength at high speed, but also take into account the improvement of noise at low speed; the noise-absorbing and vibration-damping component 8 can effectively absorb and reduce the loud and sharp sound of the high-speed motor during low-speed operation, thereby improving the practicability of the high-speed motor at work.

[0025] As a further solution of the utility model: the lower part of the inner wall of the air duct 1 extends downward to wrap around the stator assembly 3.

[0026] The internal rotor assembly 4 and stator assembly 3 can be protected, so that the service life of the motor can be extended.

[0027] As a further solution of the utility model: the rotor assembly 4 further comprises an elastic element 10 sleeved on the upper part of the magnetic ring shaft 2 , and the elastic element 10 is arranged inside the metal sleeve 6 and between the two bearings 11 .

[0028] At the same time, a circular sleeve can be arranged inside the metal sleeve 6 and between the two bearings 11, which can play the role of spring preload, thereby having better stability and durability.

[0029] As a further solution of the utility model: the noise absorbing and vibration reducing member 8 is made of any one of plastic, rubber, and silicone or is integrally formed with the metal sleeve 6 and the inner hole of the air duct 1 .

[0030] It can effectively absorb noise and reduce vibration.

[0031] As a further solution of the present invention: an adapter plate 12 is provided at the lower end of the stator assembly 3 .

[0032] It can be electrically connected to an external power source so that the motor can work normally.

[0033] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "including a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0034] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application 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 high-speed motor with optimized low-speed noise, characterized in that: Including air ducts; The air duct is a hollow cylindrical shell structure, a stator assembly is arranged at the lower part of the air duct, and a rotor assembly is arranged at the upper part of the stator assembly; The rotor assembly includes a magnetic ring shaft, an impeller is arranged at the upper end of the magnetic ring shaft, a metal sleeve is sleeved on the upper part of the magnetic ring shaft, a bearing is coaxially fixed at the upper and lower ends of the inner hole of the metal sleeve respectively, a plurality of static guide blades are arranged evenly between the inner and outer walls of the air duct, and a noise absorbing and vibration reducing part is integrally formed between the outer wall of the metal sleeve and the inner hole of the air duct.

2. A high-speed motor with optimized low-speed noise according to claim 1, characterized in that: The lower part of the inner wall of the air duct extends downward to wrap the stator assembly.

3. The high-speed motor with optimized low-speed noise according to claim 1, characterized in that: The rotor assembly also includes an elastic element sleeved on the upper part of the magnetic ring shaft, and the elastic element is arranged inside the metal sleeve and between the two bearings.

4. The high-speed motor with optimized low-speed noise according to claim 1, characterized in that: The noise absorbing and vibration reducing parts are processed by any one of plastic, rubber and silicone or are integrally formed with the metal sleeve and the inner hole of the air duct.

5. The high-speed motor with optimized low-speed noise according to claim 1, characterized in that: An adapter plate is arranged at the lower end of the stator assembly.

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