Rotary compressor and refrigeration cycle apparatus
AssigneeToshiba Carrier Corporation
InventorsTaishi Nagahata, Hiroyuki Mizuno, Masahiro Hatayama
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Abstract
According to one embodiment, a rotary compressor includes a compression mechanism unit and an electric motor. The compression mechanism unit includes a first bearing, a second bearing, first to third refrigerant compression units, a second intermediate partitioning panel, and a rotation shaft. The compression mechanism unit is fixed to the sealed container by a pair of fixing units which are provided at two locations spaced apart from each other in the axial direction of the rotation shaft, and the center of gravity of a structure comprising the compression mechanism unit and the rotor of the electric motor is positioned between the pair of fixing units.
Claims7
A rotary compressor comprising:
- a cylindrical sealed container;
- a compression mechanism unit compressing a refrigerant inside the sealed container;
- and
- an electric motor including a stator fixed to an inner peripheral surface of the sealed container on an upper side of the compression mechanism unit and a rotor surrounded by the stator to drive the compression mechanism unit inside the sealed container,
- the compression mechanism unit comprising:
- a first bearing and a second bearing arranged in intervals in an axial direction of the sealed container;
- first to third refrigerant compression units arranged in intervals in an axial direction of the sealed container between the first bearing and the second bearing;
- a first intermediate partition plate interposed between the first refrigerant compression unit and the second refrigerant compression unit;
- a second intermediate partition plate interposed between the second refrigerant compression unit and the third refrigerant compression unit;
- and
- a rotary shaft including a first journal portion supported by the first bearing, a second journal portion supported by the second bearing, the first journal portion, first to third crank portions provided between the first journal portion and the second journal portion to eccentrically rotate in cylinder chambers of the first to third refrigerant compression portions and allow rollers to be fitted, a first intermediate shaft portion located between the first crank portion and the second crank portion, and a second intermediate shaft portion located between the second crank portion and the third crank portion, the rotary shaft having the rotor of the electric motor fixed and rotating, and
- the compression mechanism unit being fixed to the sealed container by a pair of fixing portions provided at two places spaced in an axial direction of the rotary shaft, a center of gravity of a structure including the compression mechanism unit and the rotor of the electric motor being located between the pair of fixing portions, wherein
- the center of gravity of the structure including the compression mechanism unit and the rotor of the electric motor is located on the axis of the first intermediate shaft portion.
Dependencies are inferred from the claim text.