| 摘要 |
<p>PURPOSE:To prevent a vane from generating chattering when a vane type compressor is started, by relieving the pressure in a working chamber, before it reaches a delivery port, to a delivery chamber. CONSTITUTION:When a working chamber P1, formed by vanes V, is placed in a position disconnected from a delivery port 7 and a suction port 6, a communication hole 21, communicating with a delivery chamber, is opened to said working chamber. The communication hole 21 arranges a control valve, and its spring pressure is set so that the valve is actuated to open by the pressure in the working chamber when the pressure in the delivery chamber is in a low level. Consequently, if the pressure in the working chamber P1 increases, said pressure is relieved into the delivery chamber through the communication hole 21, and a compressor, preventing action of force such as pressing the vane V into its point end rear surface side, prevents chattering from being generated in the vane V even with a small back pressure to the vane V when the compressor is started.</p> |
