(57) The invention relates to an encapsulated refrigerant compressor (1) having
- a compressor shell (100);
- a pump unit (10) located within the compressor shell (100), said pump unit (10)
comprising:
-- a cranktrain (200) with a crankshaft (210), a counterweight (225), a crankpin (220),
a connecting rod (230) and a piston (240;
-- a crankcase (300) with a cylinder housing (310), wherein a cylinder (320) for reciprocating
movement of the piston (240) is located, and wherein the crankshaft (210) is rotatably
mounted inside a main bearing section (302),
-- an electric drive unit (400) with a stator (420) and a rotor (410), the rotor (410)
being fixed to the crankshaft (210) ;
-- wherein the crankshaft (210) is axially supported by a ball bearing (201) on the
crankcase (300).
The crankshaft (210) comprises an upper bearing section (215) and a lower bearing
section (217) to form an upper sliding bearing (215b) and a lower sliding bearing
(217b), wherein an upper bearing seat (305) as the part of the main bearing section
(302) forming the upper sliding bearing (215b) is arranged at an upper end section
of the main bearing section (302) of the crankcase (300), and wherein said upper bearing
seat (305) is configured to be flexibly bendable in a radial direction (212) of the
crankshaft (210).
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