Scroll compressor
AssigneeDaikin Industries, Ltd.
InventorTakashi Uekawa
Life of this patent
Estimating the term…
Abstract
A scroll compressor includes a compression mechanism, a crankshaft, upper and lower bearings, and a drive motor. The compression mechanism includes fixed and movable scrolls engaged with each other to form a compression chamber. The crankshaft has a main shaft and an eccentric portion eccentrically disposed at one end of the main shaft and coupled to a back side of the movable scroll. The upper and lower bearings support upper and lower portions of the main shaft. The drive motor has a stator and a rotor coupled to the main shaft to rotate the movable scroll. At least one of the main shaft and the rotor is provided with a weight arranged to reduce distortion of the crankshaft caused by a fluid load generated in the compression chamber and applied to the eccentric portion during rotation.
Claims7
A scroll compressor, comprising:
- a compression mechanism including a fixed scroll and a movable scroll engaged with each other to form a compression chamber configured to compress a fluid;
- a crankshaft having a main shaft and an eccentric portion eccentrically disposed at one end of the main shaft and coupled to a back side of the movable scroll;
- an upper bearing supporting an upper portion of the main shaft of the crankshaft;
- a lower bearing supporting a lower portion of the main shaft of the crankshaft (40);
- and
- a drive motor having a stator and a rotor coupled to the main shaft of the crankshaft to rotate the movable scroll,
- at least one of the main shaft of the crankshaft and the rotor of the drive motor being provided with a weight, the weight being arranged to reduce distortion of the crankshaft caused by a fluid load generated in the compression chamber and applied to the eccentric portion during rotation.
Dependencies are inferred from the claim text.