发明授权
- 专利标题： System and method to reduce acoustic noise in screw compressors
- 专利标题（中）： 减少螺杆压缩机噪声的系统和方法
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申请号： US10895204申请日： 2004-07-20
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公开(公告)号： US07413413B2公开(公告)日： 2008-08-19
- 发明人: Harold Robert Schnetzka , E. Curtis Eichelberger, Jr. , Paul Nemit, Jr.
- 申请人： Harold Robert Schnetzka , E. Curtis Eichelberger, Jr. , Paul Nemit, Jr.
- 申请人地址： US PA York
- 专利权人： York International Corporation
- 当前专利权人： York International Corporation
- 当前专利权人地址： US PA York
- 代理机构： McNees Wallace & Nurick, LLC
- 主分类号： F04B17/00
- IPC分类号： F04B17/00
摘要：
A system is provided for attenuating tonal acoustic noise associated with a single positive displacement compressor, or multiple positive displacement compressors proximately located from each other. A controller selectably controls the rotational speed and the frequency of operation of each of the compressors. The controller controls the rotational speed of the compressors about a predetermined rotational speed, in a random manner, within the pre-selected speed band to reduce the magnitude of the central tonal acoustic frequency of the pressure pulsations and disperse the sound power over a wider acoustic bandwidth.
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