Control valve for variable capacity compressors

Details Control valve for variable capacity compressors Control valve for variable capacity compressors

2006-10-31

2006-10-31

Jacyna, J. Casimer (Department: 3751)

Valves and valve actuation

Electrically actuated valve

Including solenoid

C251S129150, C251S129190, C251S129210

Reexamination Certificate

active

07128304

ABSTRACT:
A control valve for a compressor with a discharge port, a chamber port, a side chamber port, an intake port, a feed hole between the discharge port and the chamber port, an extraction hole between the side chamber port and the intake port; a feed valve controls the feed hole; an extraction valve controls the extraction hole; and a solenoid is capable of actuating the feed and extraction valves. In a first status, a minimum flow rate is secured at the extraction valve with the feed valve being fully opened. In a second status, the feed valve is fully closed and the extraction valve is fully opened. In an intermediate status, the feed valve is moved from a nearly closed state to a fully closed state depending on the value of control current. At the extraction valve, a predetermined flow rate is effectuated irrespective of its opening degree.

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