Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Alexander Lifson0
Date of Patent
September 16, 2008
0Patent Application Number
099213340
Date Filed
August 3, 2001
0Patent Primary Examiner
Patent abstract
Step control in capacity modulation of a refrigeration or air conditioning circuit is achieved by rapidly cycling a solenoid valve in the suction line, economizer circuit or in a bypass with the percent of “open” time for the valve regulating the rate of flow therethrough. A common port in the compressor is used for economizer flow and for bypass.
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