Vane Behavior in Vane Compressors Under Start-up Operation

Vane oompressors can not maintain contact between a vane tip and a cylinder wall under start-up operation since backpressure acting on the vane is not sufficient. We theoretically analyzed transient behavior of the vane under the start-up operation by taking account of changes of the backpressure and discharge pressure after compression starting. The validity of the theoretical analysis was confirmed by comparison with experimental results. Oil viscosity and flow resistance of a channel oonnecti.ng a back chamber with a discharge chamber greatly affect the vane behavior under the start-up operation.