Scroll compressor having well-balanced rotary elements
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsTakuji Sasa, Manabu Sakai, Shigeru Muramatsu
Life of this patent
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Abstract
A scroll compressor has a closed vessel in which a compression mechanism having orbiting and stationary scroll elements in engagement with each other is accommodated. A crankshaft is coupled with the orbiting scroll element and rotatably supported by a crank bearing. The crankshaft is rotated by an electric motor having a stator and a rotor so that the orbiting scroll element may orbit relative to the stationary scroll element. A plurality of balance weights are provided for maintaining static and dynamic balances of rotary elements including the orbiting scroll element, the crankshaft, and the rotor. The static and dynamic balances are calculated using at least a clearance between the crankshaft and the crank bearing.
Claims6
A scroll compressor comprising:
- a closed vessel;
- a compression mechanism accommodated in said closed vessel and having orbiting and stationary scroll elements in engagement with each other;
- a crankshaft coupled with said orbiting scroll element;
- an electric motor having a stator and a rotor for rotating said crankshaft to orbit said orbiting scroll element relative to said stationary scroll element;
- a crank bearing for rotatably supporting said crankshaft;
- and
- balancing means for maintaining static and dynamic balances of rotary elements including said orbiting scroll element, said crankshaft, and said rotor;
- wherein the static and dynamic balances are calculated using at least a clearance between said crankshaft and said crank bearing.
Dependencies are inferred from the claim text.