Unlock instant, AI-driven research and patent intelligence for your innovation.

Motor sound insulation cover device

A sound insulation cover and noise technology, applied in the direction of electromechanical devices, casings/covers/supports, electrical components, etc., can solve problems such as unintegrated noise reduction, achieve sound insulation effects, reduce noise, and have a simple structure Effect

Active Publication Date: 2022-04-22
SOUTHEAST UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the shortcomings of the above-mentioned background technology, to provide a motor sound insulation cover device, and to achieve the purpose of reducing noise pollution and enhancing the heat dissipation effect of the motor based on the principle of sound wave filtering without adding additional devices. There is a technical problem that the noise reduction and heat dissipation functions of the sound insulation cover device are not integrated

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Motor sound insulation cover device
  • Motor sound insulation cover device
  • Motor sound insulation cover device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Filtering out main noise frequencies

[0024] Such as figure 1 As shown, the motor 2 includes: a rotor 2.4 installed on a rotating shaft 2.5, a stator structure arranged outside the rotor, the stator structure has a plurality of stator teeth 2.1 and a stator yoke 2.2, and the stator teeth 2.1 are attached to the outer surface of the rotor 2.4 The upper permanent magnet 2.3 is opposite. The motor sound insulation cover device 1 is set outside the motor 2. The motor sound insulation cover device 1 includes a casing outside the stator structure and a plurality of labyrinth pipe structures 1.1. Each labyrinth pipe structure 1.1 is fixed on the inner wall of the casing. Two adjacent labyrinth pipe structures are equidistantly spaced and connected through the connecting part 1.2, and the device can be used to replace the traditional casing. As shown in Figure 2(a), each labyrinth pipeline structure is divided into five sections, including: five sections of pipeli...

Embodiment 2

[0031] Embodiment 2: Filter out noise with a large frequency span

[0032] For noise with a large frequency span, the main noise frequencies in different frequency bands are used as filtering objects, and any sound insulation cover device in Embodiment 1 is stacked radially to obtain the following image 3In the three-layer stacked structure of the sound insulation cover device shown, the parameters of each layer of sound insulation cover are determined according to the main frequencies to be filtered out in each frequency band and combined with formula (1), so that noise with a large frequency span can be filtered.

[0033] The design method of the sound insulation cover of the present invention can be applied to motor noises of different frequencies, and can realize the isolation of noises of any frequency.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a motor sound insulation cover device, which belongs to the technical field of power generation, transformation or distribution. The motor sound insulation cover device is set on the outermost part of the motor. It consists of five labyrinth pipe structures connected end to end. The length of the second pipe structure is determined according to the wavelength to be isolated. The first pipe has the same structure as the fifth pipe. The pipeline section and the fourth section pipeline have the same structure, and the pipeline structure characteristics satisfy the numerical constraint relationship S 1 =10 S 3 , S 2 =sqrt( S 1 * S 3 ), L 2 =2 L 3 According to the design method of the present invention, the main noise frequency can be filtered out. If the frequency span of the noise to be eliminated is relatively large, a stacked structure can be used in the radial direction to achieve isolation of any frequency noise. In addition, the medium in the pipeline can be replaced according to the type of motor and the actual situation. The invention realizes the integration of heat dissipation and sound insulation of the motor without adding additional devices based on the principle of sound wave filtering.

Description

technical field [0001] The invention discloses a motor sound insulation cover device, relates to motor noise processing technology, and belongs to the technical field of power generation, power transformation or power distribution. Background technique [0002] With the emergence of high power density motors, the heat dissipation and noise reduction issues of motors are getting more and more attention. The heat dissipation methods of traditional motors mainly include natural cooling, forced air cooling, hydrogen cooling, water cooling and oil cooling. In order to increase the heat dissipation area, most motor housings are equipped with fins for heat dissipation. However, this type of heat dissipation method cannot reduce motor noise and has a single function. When the motor is started, it whistling and generating noise. Motor noise is mainly generated by three reasons: electromagnetic, mechanical, and ventilation. Correspondingly, motor noise can be divided into three cat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02K5/24H02K5/04H02K5/20
CPCH02K5/24H02K5/04H02K5/20H02K5/203H02K2213/03
Inventor 蔡海维黄茹徐炜王激尧秦岭
Owner SOUTHEAST UNIV