| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a variable displacement compressor avoiding large displacement operation in refrigerant shortage condition or in high speed operation condition. <P>SOLUTION: A pressure chamber 56 is divided into a housing 55 forming a pressure reducing valve 33 and a bellows 57 is received in the pressure chamber 56. The pressure chamber 56 is communicated with a suction chamber 131 through a passage 58. A valve body 62 and a spring 63 are received in the housing 59. The valve body 62 opens and closes a valve hole 61 and the spring 63 biases the valve body 62 in a direction of closing the valve hole 61. When the valve hole 61 is opened, a second pressure sensitive chamber 46 and the suction chamber 131 in a displacement control valve 32 are communicated with each other. The pressure reducing valve 33 is constructed to open the valve hole 61 when pressure in the pressure chamber 56 (pressure in a suction pressure area) becomes below a preset reference pressure Po. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
