| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a control mechanism which can vary intake pressure control characteristics without varying a sectional area of a seal of a valve body nor varying design conditions of bellows. SOLUTION: In a variable displacement compressor, a discharge chamber 57 is communicated with a crank chamber 61 by means of a first communication passage 71. A pressure chamber 17 is communicated with the crank chamber 61 by means of second communication passages 23, 24, 28. An extendable/contractable pressure sensing means 5 senses pressure inside an intake chamber 58 or the crank chamber 61. A transmitting rod 12 has one end abutting against the pressure sensing means 5. A valve element 15 is arranged in a valve chamber 16 for opening and closing the first communication passage 71 according to contraction/extention of the pressure sensing means 5. A spring 19 pressurizes one end of the valve element 15. A pressure sensing rod 21 is allowed to abut against the other end of the spring 19, and receives pressure in the discharge chamber 57 for adjusting a displacement rate of the spring 19. One end of the valve body 15 is projected into the pressure chamber 17. Pressure in the discharge chamber 57 and the crank chamber 61 is cancelled which is applied in opening and closing directions of the valve element 15, by adjusting pressure receiving areas of both ends of the valve element 15.</p> |
