Axial flow compressor with insertable bearing mount

摘要

A compressor has a cylindrical casing unit having at least one open end. A compression element includes a circular cylinder held in the casing unit, a cylindrical rotating body having at least one spiral groove on its outer periphery and eccentrically arranged in the cylinder, and a spiral blade wrapped on the rotating body and fitted in the spiral groove in a manenr to be freely displaceable relative to the spiral groove. The cylinder and rotating body are journaled in a bearing means. A frame includes a cylindrical section intimately inserted into an open end of the casing unit and a disc section blocking the cylindrical section and provided orthogonal to an axis of the cylindrical section, the frame blocking the open end of the casing unit and supporting the bearing means. An electrically operating element has a stator fixed to an inner wall of the casing unit and rotor fixed to an outer periphery of the cylinder with a motor air gap defined relative to the stator, the electrically operating element rotationally driving the compression element to allow a relative rotation to be made between the cylinder and the rotating unit.