SLIDING VANE COMPRESSOR AND REFRIGERATING OR COOLING DEVICE POSSESSED OF REFRIGERATING CYCLE WITH THE COMPRESSOR

摘要

PROBLEM TO BE SOLVED: To provide a sliding vane-type compressor capable of preventing the noise caused by the flow of high pressure fluid in stopping a compressor, and the defective phenomenon of a vane and the malfunctioning phenomenon in compression generated in starting the compressor with the difference in pressures between the high pressure side and the lower pressure side. SOLUTION: In supplying a gas to a vane back pressure chamber 17, the flow of the fluid of high pressure to a vane back pressure chamber 17 is not found as the pressure same as the fluid at low pressure is applied to a gas passage 50 in stopping a compressor regardless of the difference in pressures between a high pressure side and a low pressure side after stopping the compressor, by mounting the gas passage 50 for communicating and cutting a working chamber 8 just before a discharge valve with respect to the vane back pressure chamber 17. Further in starting, the over-compressed gas fluid can be instantaneously supplied to the vane back pressure chamber 17, as the gas passage 50 is constantly communicated in stopping the compressor. Accordingly the defective phenomenon of the vane and the malfunctioning phenomenon in compression can be prevented.