| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a further more responsive control valve for a variable displacement compressor. <P>SOLUTION: The control valve comprises a valve body 120, a solenoid excitation part 130 and a pressure sensitive part 145. A pressure sensitive chamber 145a constituting the pressure sensitive part 145 is provided in the valve body 120. With the pressure sensitive chamber 145a, an introduction discharge port 123 for introducing refrigerant from a discharge pipe of the compressor, a flow-out discharge port 125 for making the refrigerant flow out to the discharge pipe on the downstream side, and a crank chamber port 126 communicating with the pressure sensitive chamber 145a via a valve chamber 121 communicate. For controlling the pressure of the refrigerant in the crank chamber port 126 with differential pressure (PdH-PdL) between the introduction discharge port 123 and the flow-out discharge port 125, a valve element 132a which is controlled to be opened/closed by the solenoid excitation part is provided in the valve chamber 121. Besides, a differential pressure sensitive body 145b integrated with the valve element 132a is provided in the pressure sensitive chamber 145a for holding differential pressure with a gap between the outer peripheral face of the differential pressure sensitive body 145b and the inner wall face of the valve chamber 121. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
