Patent ID: 6247902
Filing Date: 2001-06-19
Classification: F04B

Abstract:
A compressor having a damper for attenuating torsional vibrations, the compressor having a rotating body, which includes an integrally rotating drive shaft, and a compressing member driven by the rotating body to compress fluid, which causes torsional vibrations of the rotating body, wherein the damper attenuates the torsional vibrations of the rotating body, the damper comprising:a frictional member provided on the rotating body to integrally rotate with the rotating body, wherein the frictional member has a frictional surface;a weight having a frictional surface, wherein the frictional surface of the weight contacts the frictional surface of the frictional member to create a predetermined frictional torque resistance between the weight and the frictional member; anda coupler to elastically connect the weight to one of the rotating body and the frictional member for transmitting rotation and torsional vibrations of the rotating body to the weight, wherein the coupler has elasticity in the direction of the torsional vibrations, and wherein the weight contacts the frictional member and vibrates about the axis of the rotating body to cancel the torsional vibrations of the rotating body.