Patent ID: 6929457
Filing Date: 2005-08-16
Classification: F01C,F04C

Abstract:
1. A gas compressor for sucking in, compressing, and discharging refrigerant gas, the gas compressor comprising: an elliptical cylinder; a rotor rotatably arranged in the cylinder; vane grooves radially formed in the rotor; vanes slidably disposed in the vane grooves and capable of projecting and retracting radially with respect to the rotor; a flat groove configured and arranged to communicate with vane groove bottom portions during a refrigerant gas sucking/compressing process; a high pressure supplying hole configured and arranged to communicate with the vane groove bottom portions upon interception of the communication between the vane groove bottom portions and the flat groove in the refrigerant gas compressing process; and a communication passage for establishing communication between the flat groove and the high pressure supplying hole at the start of operation of the gas compressor.