HERMETIC COMPRESSOR AND VAPOR COMPRESSION-TYPE REFRIGERATION CYCLE DEVICE INCLUDING THE HERMETIC COMPRESSOR

摘要

A hermetic compressor, includes a hermetic container having a bottom portion in which lubricating oil is stored; an electric motor including a stator and a rotator; a drive shaft attached to the rotator; a compression mechanism for compressing refrigerant by using rotation of the drive shaft; a rotary pressure increasing mechanism for increasing a pressure of refrigerant gas, the rotary pressure increasing mechanism being arranged on the rotator; a cylindrical lateral wall for partitioning a space above the electric motor into an outer space and an inner space in a manner that the a cylindrical lateral wall surrounds the rotary pressure increasing mechanism; and a discharge pipe for allowing the refrigerant to flow out from the inner space into an external circuit that is external to the hermetic container.

主权项

1. A hermetic compressor, comprising:
a hermetic container having a bottom portion for storing lubricating oil; an electric motor arranged in the hermetic container, the electric motor including:
a stator; anda rotator through which rotator vents are formed in a vertical direction; a drive shaft attached to the rotator; a compression mechanism arranged in the hermetic container, for compressing refrigerant by using rotation of the drive shaft, a rotary pressure increasing mechanism arranged on an upper portion of the rotator, for increasing a pressure of refrigerant gas by allowing the refrigerant gas to flow through the rotary pressure increasing mechanism while rotating about the drive shaft, a cylindrical lateral wall for partitioning a space above the electric motor into an outer space on the stator side and inner space on the rotator side in such a manner that the cylindrical lateral wall surrounds the rotary pressure increasing mechanism positioned in the inner space; and a discharge pipe communicated to the inner space, for allowing the refrigerant to flow out from the inner space into an external circuit that is external to the hermetic container, wherein the refrigerant gas that is compressed by the compression mechanism and discharged into the hermetic container is moved from a space below the electric motor up to an upper end of the rotator through the rotator vents, flows into the rotary pressure increasing mechanism to be increased in pressure, flows into the inner space to increase a pressure in the inner space, and is discharged to an outside through the discharge pipe while suppressing inflow of the refrigerant gas from the outer space to the inner space.