Refrigerant compressor

In a refrigerant compressor of the type having a case, a compressor section and a driving section incorporating an electric motor, said compressor section and said driving section being encased by said case, and a crank shaft adapted to be driven by the rotor of said electric motor,

• an improvement which comprises that said crank shaft is held substantially horizontally and has a journal portion, an eccentric portion carrying a rotary piston and a main shaft portion, said refrigerant compressor further comprising a spring guide including an attaching base defining an oil pressure chamber and attached to a bearing supporting said journal portion and a bent oil pipe connected at its one end to an opening formed in said attaching base portion and immersed at its other end in the lubricating oil collected in said case, said opening of said attaching base being substantially coaxial with said crank shaft, said compressor further comprising a closely-coiled spring received by said oil pipe, said closely-coiled spring having adjacent turns closely contacting each other and screwed at its one end into a threaded bore formed in one end of said crank shaft while the other end has a frusto-conical form and is immersed in said lubricating oil.