Radial compliance mechanism to urge orbiting member to any desired direction and star scroll compressor

A device comprising:

• a fixed member comprising an inner surface, wherein the inner surface encloses a chamber with a plurality of scroll lobes extended into the chamber;
• an orbiting member comprising an outer surface enclosing a main body, and the main body having a plurality of scroll lobes extending outward and in the chamber;
• wherein the orbiting member is configured to orbit along a circular path relative to the fixed member;
• wherein the orbiting member and the fixed member have a same number of scroll lobes and form a same number of working scroll pairs;
• wherein the orbiting member and the fixed member form fluid-tight enclosed spaces between the orbiting member and the fixed member;
• wherein the orbiting member and the fixed member are engaged during orbiting of the orbiting member;
• wherein the scroll lobes are configured such that a compression torque at starting of contact between each of the working scroll pairs during orbiting of the orbiting member causes each of the working scroll pairs to part;
• a discharge plate attached to an end of the fixed member;
• a suction plate attached to another end of the fixed member;
• wherein the suction plate comprises suction holes through the suction plate, and the suction holes are configured to be fluidly connected to the enclosed spaces;
• wherein the discharge plate comprises discharge holes through the discharge plate, and the discharge holes are configured to be fluidly connected to the enclosed spaces;
• wherein the orbiting member has a bearing hole concentric with its geometric center axis;
• wherein the device further comprises a mechanism that comprises:
• a driving shaft comprising an eccentric crank and an arm part extending radially from the driving shaft, the arm part of the driving shaft comprising a piston housing;
• a piston in the piston housing;
• an eccentric lever bushing comprising an arm part extending radially therefrom, a cylindrical outer surface and a cylindrical hole, wherein the cylindrical hole is rotatably attached to the eccentric crank, wherein an axis of the cylindrical hole and an axis of the cylindrical outer surface are parallel and offset;
• wherein the piston is configured to apply a torque on the eccentric lever bushing by pushing the arm part of the eccentric lever bushing.