Hermetic motor-compressor unit with a restraining member for the lower part of the drive-shaft.

摘要

A hermetic motor-compressor unit (1), particularly for use in a refrigerator or the like, comprising a casing (2) containing a compressor frame (26) for supporting a usual electric motor (8) provided with a stator (9) and a rotor (10), and a cylinder (20) within which a piston (17) moves driven by a drive shaft (13), a compressor head (25) being provided on said cylinder (20). The upper portion (14) of said shaft (13), ie the portion operationally cooperating with said piston (17), passes through the compressor frame (26) via a suitable aperture (30) in which a bearing or similar member (31) is provided. The lower portion (33) of the shaft (18) is associated with restraining means (35) which limit the oscillation of the shaft (18) in planes containing its axis (W). <IMAGE>