Refrigerant compressor

A refrigerant compressor (1) with

• a hermetically encapsulated compressor housing (2),
• an electric drive unit (3) arranged in a housing interior of the compressor housing (2) and comprising a rotor (4) rotatable about an axis of rotation (14), a stator (5), and a crankshaft (6), which crankshaft (6) is connected to the rotor (4) in a torque-proof manner,
• a piston-cylinder unit (7) arranged in the housing interior and comprising a piston (9), which piston (9) is movably arranged in a cylinder (8) of the piston-cylinder unit (7) and can be driven by the crankshaft (6) to compress refrigerant,
• a lubricant receptacle (10) for conveying lubricant (11) from a lubricant sump (13) arranged in a bottom area (12) of the compressor housing (2) vertically via the crankshaft (6), when the refrigerant compressor (1) is in an operating state, wherein viewed in a first direction (15) the stator (5) extends from a first stator section (16) to a second stator section (17) and the rotor (4) extends from a first rotor section (22) to a second rotor section (23), wherein the first direction (15) is parallel to the axis of rotation (14) and points from the bottom area (12) to the piston-cylinder unit (7), wherein the crankshaft (6) is partially arranged in a bush-like section (21) of a compressor block (20), wherein, viewed in radial directions (24) normal to the first direction (15) and pointing away from the axis of rotation (14), an interspace (25) is formed between the second stator section (17) and the compressor block (20), in which interspace (25) the second rotor section (23) is arranged at least partially, wherein, viewed in the radial directions (24), a gap (26) is formed between the second rotor section (23) and the compressor block (20) with lubricant (11) being conveyed into the gap (26) in the operating state of the refrigerant compressor (1), wherein the rotor (4) comprises a rotor ring (38) arranged in the second rotor section (23), wherein the rotor ring (38) comprises lubricant distribution means that break the rotational symmetry of the rotor ring (38) with respect to the axis of rotation (14), in order to improve streaming of the lubricant (11) from the gap (26) to the second stator section (17) in the operating state of the refrigerant compressor (1).