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Low-noise rotating shaft

A low-noise, rotating shaft technology, applied in the direction of magnetic circuit rotating parts, casing/cover/support, electric components, etc., to achieve the effect of reducing noise

Active Publication Date: 2010-06-09
常州威灵电机制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Low-noise motors are used in floor air conditioners in high-end places such as villas and clubs, and the requirements for noise are very strict. However, the general technical specifications for fan motors of conventional room air conditioners in the industry stipulate that the A-weighted sound power measured when the motor is running without load The noise value of the A-weighted sound power level does not exceed 40dB(A), while in high-end clubs, the motor of the floor air conditioner has higher requirements, and the noise value of the A-weighted sound power level measured when the motor is running at no load does not exceed 23.5dB(A). ), the noise value of the A-weighted sound power level measured by the existing manufactured motors during no-load operation is as low as 26dB(A), which cannot meet the above requirements. Therefore, a low-noise shaft must be designed for low-noise Noise motor to meet the low noise requirements of floor air conditioners

Method used

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Embodiment Construction

[0015] Such as figure 1 figure 2 The low-noise rotating shaft shown has a shaft 1, a cast aluminum rotor 2 sleeved on the shaft 1, and two bearings 3. The rotor 2 has a shaft hole, and the shaft 1 is equipped with a vibration damping ring at the matching position of the shaft hole of the rotor 2. 4.

[0016] The outer ring of the vibration-damping ring 4 is wrapped with fixed pieces 5, and the fixed pieces 5 are three separately dispersed fixed pieces, which are evenly distributed on the outer ring of the vibration-damping ring 4 . The damping ring 4 is a rubber damping ring, and the fixed piece 5 is a metal fixed piece. The fixed piece 5 is press-fitted in the shaft hole of the rotor 2 together with the shaft 1 on which the damping ring 4 is installed.

[0017] An anti-slip sleeve 6 is respectively installed on both sides of the fixed piece 5, and two bearings 3 are respectively press-fitted on the outside of each anti-slip sleeve 6.

[0018] The vibration damping ring 4...

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Abstract

The invention relates to a low-noise rotating shaft used for a low-noise motor. The rotating shaft is provided with a shaft, a rotor and two bearings, wherein the rotor is provided with a shaft hole; the shaft is pressed in the shaft hole of the rotor after the shaft is provided with a vibration reduction ring at a matching part of the shaft and the rotor shaft hole; both sides of a fixing piece are respectively provided with an anti-skid sleeve; and the two bearings are respectively pressed outside each anti-skid sleeve. The vibration reduction ring is added between the rotor and the shaft, thereby effectively stopping the rotor from transmitting vibration to the shaft so as to reduce noise generated by vibration when the motor is operated, and meet the requirement on noise of floor air conditioners of high-grade places such as villas, clubs, and the like.

Description

technical field [0001] The invention relates to a low-noise rotating shaft for a low-noise motor. Background technique [0002] In the air-conditioning industry, in order to reduce the noise generated by the electromagnetic vibration of the motor, the rubber vibration-damping design is mainly used for the body where the stator is installed, and there is no vibration-damping design for the rotor. In fact, since the air gap magnetic field not only has the fundamental wave, but also a series of high-order harmonics, the interaction of these magnetic fields will generate periodic forces, and both the fundamental wave and high-order harmonic electromagnetic forces will cause vibration and noise. During the operation of the motor, the alternating electromagnetic force acting in the air gap of the motor will cause vibration and noise to the stator and rotor of the motor. [0003] Low-noise motors are used in floor air conditioners in high-end places such as villas and clubs, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/22H02K5/24
Inventor 秦邦耀
Owner 常州威灵电机制造有限公司
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