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1. (WO2018197670) REFRIGERANT COMPRESSOR

Pub. No.:    WO/2018/197670    International Application No.:    PCT/EP2018/060877
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Apr 28 01:59:59 CEST 2018
IPC: F04B 39/02
F04B 39/12
Applicants: NIDEC GLOBAL APPLIANCE GERMANY GMBH
Inventors: SCHWEIGHOFER, Alfred
KRISPEL, Wilhelm
Title: REFRIGERANT COMPRESSOR
Abstract:
The invention relates to a refrigerant compressor, comprising: a preferably hermetically sealable compressor housing; an electric drive unit, comprising a rotor (4) and a stator (3); a crankshaft (1), which is connected to the rotor (4) for conjoint rotation and which has a longitudinal axis (2); a piston-cylinder unit, which can be driven by the crankshaft (1); wherein the electric drive unit is designed as an external rotor motor and the rotor (4) has a carrier element (12) extending outward radially with respect to the longitudinal axis (2) at least in some sections and the carrier element (12) is connected to the crankshaft (1) for conjoint rotation. According to the invention, in order to enable an increased delivery rate of lubricant from a lubricant sump together with preferably low or reduced height of the compressor, a sleeve-shaped lubricant receiver (8) for centrifugally conveying lubricant from a lubricant sump formed in a bottom region of the compressor housing toward the piston-cylinder unit is provided on a side of the carrier element (12) facing away from the piston-cylinder unit (5), the sleeve-shaped lubricant receiver (8) being joined to the carrier element (12) for conjoint rotation.