Control valve for variable displacement compressor
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United States of America Patent
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-
Nov 17, 2020
Grant Date -
Oct 11, 2018
app pub date -
Apr 4, 2018
filing date -
Apr 7, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A control valve includes: a body having a control chamber communication port and a suction chamber communication port; a valve element that moves toward and away from a valve hole to close and opening a bleed valve, the ports communicating with each other through the valve hole; a solenoid to generate a drive force in an opening direction of the bleed valve; and a pressure sensing element to sense a pressure in the suction chamber or a pressure in the control chamber, and generate a counterforce against the drive force from the solenoid depending on a magnitude of the sensed pressure. An opening degree of the bleed valve is controlled so that the sensed pressure becomes a set pressure. A bleed passage for delivering the refrigerant introduced through the control chamber communication port to the suction chamber even while the bleed valve is in a closed state is formed.
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