Refrigerant system with multi-speed scroll compressor and economizer circuit
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United States of America Patent
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Dec 20, 2011
Grant Date -
Jan 7, 2010
app pub date -
Sep 16, 2009
filing date -
May 4, 2005
priority date (Note) -
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Abstract
A scroll compressor is provided with a multiple-speed motor. A control selects a speed for operating the motor, along with selecting between several available options for the system capacity adjustment to meet external load demands in a most efficient and reliable manner. The disclosed embodiment includes an economizer circuit, an unloader function, and an optional suction modulation valve. By utilizing each of these features in combination with the multi-speed motor for the compressor, the present invention is better able to tailor provided capacity to desired capacity.
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