Patent ID: 7217109
Filing Date: 2007-05-15
Classification: F01C,F04C

Abstract:
1. A scroll type hydraulic machine comprising: a housing having a drive casing and a compression casing; a drive shaft extending inside the drive casing and rotatably supported by the drive casing through a bearing; and a scroll unit housed inside the compression casing and executing a series of processes of suction, compression and discharge of refrigerant driven by the drive shaft, wherein the unit comprises a movable scroll that is driven by the drive shaft and implements swivel movement around an orbital center being a shaft center of a stationary scroll; and rotation interception mechanisms disposed in plurality on a substrate side of the movable scroll and for intercepting the operations of the movable scroll around the rotation center without interfering swivel movements of the movable scroll, wherein the respective rotation interception mechanisms are mounted to intervene between the drive casing and the substrate of the movable scroll, and include a binding member for binding rotation of the movable scroll, a fixed side pin provided with protrusion in the drive casing to get engaged with the binding member, and a swivel side pin provided with protrusion in the movable scroll to get engaged with the binding member for being restrained by the binding member and swiveling around the shaft center of the fixed side pin, and further comprises load alleviation means for alleviating loads onto the fixed side pin and the swivel side pin caused by torque due to the distance between the gravity center and the rotation center of the movable scroll and the centrifugal force.