AN AXIAL BEARING FOR HERMETIC COMPRESSORS

摘要

An axial bearing for hermetic compressors, including a vertical crankshaft (5) incorporating a peripheral flange (7) which is supported, through an oil film, on the upper face of the annular bearing body (10), said bearing resting on a cylinder block (3) and comprising a supporting means (20) which, at the lower portion thereof, is seated on said cylinder block (3) and which carries, at its upper portion and in a fixed rotating form, the annular bearing body (10), said supporting means (20) causing during the compressor operation a downward oscillation of said annular bearing body (10) around a diametral axis, said oscillation occurring over a circumferential portion of said supporting means (20) submitted to an axial force, resulting from an oil film pressure over the respective circumferential portion of the annular bearing body (10), higher than the oil film pressure over the diametrically opposite portion of said annular bearing body (10), said oscillation being sufficient to balance the oil film pressure in said circumferential portions.