GAS LEAKAGE REDUCING STRUCTURE OF A CLOSED COMPRESSOR FOR MINIMIZING A DEAD VOLUME FORMED BY A VANE BY FORMING AN ATTACHABLE UNIT ON BOTH ENDS OF AN OUTER BLADE CONTACT SURFACE WITH LARGE RADIUS OF CURVATURE

摘要

PURPOSE: A gas leakage reducing structure of a closed compressor is provided to contact closely a blade contact surface of a vane with a cam surface of a blade unit only in an actual contact line range by preventing unnecessary interference of the vane and the cam surface of the blade unit at the outside of the contact line range. CONSTITUTION: A gas leakage reducing structure of a closed compressor is composed of a cylinder assembly having a predetermined inner space(V), plural vane slots communicating with the inner space, and plural discharge ports formed at the side of the vane slot to communicate with the inner space; a rotary shaft(4) having a blade unit(4C) for dividing the inner space of the cylinder assembly into plural closed spaces and moving fluid in each closed space with rotating relatively; and a plurality of cylindrical vanes(10) inserted into the vane slot of the cylinder assembly to contact with both upper and lower sides of the blade unit and reciprocated axially along the shape of the blade unit to compress the fluid in each closed space. A blade contact surface of the vane contacting with the blade unit is curved and inner and outer curvature radiuses are different from each other. The blade contact surface is formed only in a contact line.