Compressor Clutch Elastic Member for Axial Vibration Damping
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Solution Overview
Problem
Conventional clutches in compressors generate significant noise and vibration due to contact and separation between the pulley and disk, which are not effectively attenuated, leading to discomfort and operational issues.
Innovation Solution
A clutch design featuring a pulley, hub, disk, field coil assembly, and an elastic member with vibration-preventing portions and an attenuation member to reduce the amplitude of vibrations transmitted in the axial direction, thereby minimizing noise and vibration by increasing rigidity and changing the natural frequency of the elastic member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pulley and disk are designed to contact and separate for power transmission control, then the compressor can be selectively operated, but significant noise and vibration are generated during contact and separation
Solution Approach 1:
An elastic member is introduced as an intermediary element between the pulley and disk. This elastic member deforms during contact and separation, absorbing impact energy and reducing the direct mechanical collision that generates noise and vibration. The elastic member serves as a buffer that maintains power transmission functionality while mitigating harmful vibrations and noises.
2Adaptability or versatility
If the disk is made movable relative to the pulley for engagement and disengagement, then power transmission can be controlled, but vibration amplitude increases during operation
Solution Approach 1:
The elastic member is pre-installed between the pulley and disk to provide cushioning before contact occurs. During engagement, the elastic member compresses to absorb impact; during disengagement, it expands to buffer the separation. This beforehand cushioning prevents direct rigid contact, thereby reducing vibration amplitude while maintaining the adaptability of power transmission control.
3Ease of manufacture
If conventional clutch components are used for simple structure, then manufacturing is easier, but noise and vibration are not attenuated
Solution Approach 1:
The clutch assembly combines different material properties by integrating an elastic member (with damping characteristics) between rigid components (pulley and disk). This composite structure leverages the rigidity of metal parts for structural integrity while utilizing the elastic material's vibration-absorbing properties to attenuate noise and vibration, achieving both ease of manufacture and noise reduction.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed clutch design significantly reduces noise and vibration by minimizing the amplitude of high and low frequency bands, preventing resonance and enhancing the operational stability of the compressor.
Implementation Method 1
a field coil assembly 400 that is positioned inside the pulley 100 and enables the disk 300 to move relative to the pulley 100 by an electromagnetic force generated according to whether or not power is applied
Implementation Method 2
an elastic member 500 that is positioned on an outer surface of the disk 300 and includes a plurality of vibration preventing portions 510 formed in a radial direction with respect to a center of the hub 200 in order to reduce the amplitude of the frequency band where abnormal noise generated by vibration transmitted when the compressor is operated
Data Source
AI summary
The present invention relates to a clutch and a compressor comprising same, and it provides a compressor that operates with low noise and low vibration by reducing an amplitude of vibration transmitted in an axial direction of a clutch.