Control valve device for variable capacity type swash plate compressor
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United States of America Patent
Stats
-
Sep 25, 2007
Grant Date -
Sep 30, 2004
app pub date -
Mar 5, 2004
filing date -
Mar 28, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is disclosed a control valve device for a variable capacity type swash plate compressor for use in an air conditioning system. The device comprises an introducing passage for connecting a discharge chamber to a crank chamber in the compressor, and a control valve for adjusting a pressure in the crank chamber in an autonomous manner to control a discharge capacity of the compressor. The control valve includes a valve unit for opening/closing the introducing passage and an electromagnetic solenoid assembly for operating the valve unit. The control valve device further comprises a resistance variable mechanism for varying a resistance of the magnetic circuit in the assembly in accordance with a differential pressure of the refrigerant between two points defined between the compressor and a condenser of the system.
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