ROTARY COMPRESSOR UNIT AND METHOD OF CONTROLLING OPERATION THEREOF
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United States of America Patent
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Issued Date -
Oct 2, 2008
app pub date -
Mar 31, 2008
filing date -
Mar 30, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The compressor unit having at least two compressors, for example a low pressure stage compressor 11 and a high pressure stage compressor 12 connected in series, of which the low pressure sage compressor 11 and high pressure stage compressor 12 are driven by driving devices 13 and 14 respectively separately or driven by a single driving device 41 via variable speed gears 43 and 44 respectively connected to each of the compressors, and rotation speed of the low pressure stage compressor 11 and that of the high pressure stage compressor 12 are controlled independently in accordance with various operating conditions of the compressor unit so that optimal load balancing of the compressors 11 and 12 is always achieved.
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