| 摘要 |
PURPOSE:To obviate the application of a drive device and obtain a variable capacity type vane compressor as manufactured less expensively by turning a control member for adjusting the opening angle of a bypass port depending upon the differential pressure of two chambers where low or high pressure is introduced. CONSTITUTION:Pressure in a suction chamber 17 is introduced to the primary chamber 271 of a bilateral pressure working chamber 27 via a suction port 16, and pressure in a delivery chamber 19 as a high pressure side is led to the secondary chamber 272 of said chamber 27 via an orifice 28. And when there has appeared a differential pressure between a sum of pressure within the primary chamber 271 and the energizing force of a coil spring 31, and pressure within the secondary chamber 272, a control member 24 turns depending upon the differential pressure and the opening angle of a bypass port is controlled. According to the aforesaid constitution, a drive mechanism is not needed specifically for capacity control, thereby enabling the manufacture of a variable capacity type vane compressor at low cost.
|
