Low noise of air-conditioners is a strong requirement from users. The main source of noise in an air-conditioner is a compressor. Therefore, noise reduction in a compressor is quite significant as an element technology in air-conditioner field. Recently, scroll compressors are widely used, because they feature low noise, due to less pulsation of gas pressure, than that of rotary compressors. For reduction of noise, the source of noise must be identified. This paper presents analysis for the noise and vibration causes in a scroll compressor and shows a modification of top cap design for a low noise of a scroll compressor.
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