Self-balanced compressor crankshaft
AssigneeTecumseh Products Company
InventorDonald L. Coffey
Life of this patent
Estimating the term…
Abstract
A hermetic compressor assembly including a compressor housing, a compression mechanism disposed in the housing, a motor disposed in the housing; and a crankshaft operatively coupling the compression mechanism and the motor and having an axis of rotation. The crankshaft includes a cylindrical eccentric and a counter eccentric lobe. The cylindrical eccentric has a central axis, defines a circular axial profile, and is located on one radial side of the axis of rotation. The counter eccentric lobe is integrally formed with the crankshaft on the opposite side of the crankshaft from the eccentric, is axially adjacent the eccentric, and is located within the circular axial profile.
Claims19
A hermetic compressor assembly comprising:
- a compressor housing;
- a compression mechanism disposed in said housing;
- a motor disposed in said housing;
- and
- a crankshaft operatively coupling said compression mechanism and said motor, said crankshaft having an axis of rotation and comprising:
- a cylindrical eccentric having a central axis and defining a circular axial profile, said eccentric central axis located on one radial side of said axis of rotation;
- and
- a counter eccentric lobe integrally formed with said crankshaft on the opposite side of said crankshaft from said eccentric, said counter eccentric lobe being axially adjacent said eccentric and located within said circular axial profile.
A hermetic compressor assembly comprising:
- a compressor housing;
- a compression mechanism disposed in said housing;
- a motor disposed in said housing;
- and
- a crankshaft operatively coupling said compression mechanism and said motor, said crankshaft having an axis of rotation and comprising:
- an eccentric portion having a cylindrical surface and a central axis on one radial side of said axis of rotation, said eccentric portion defining a circular axial profile;
- and
- means for balancing the crankshaft integrally formed with said crankshaft opposite said eccentric portion and contained within said circular axial profile.
A crankshaft for a hermetic compressor assembly, said crankshaft having an axis of rotation, comprising:
- a cylindrical eccentric portion having a central axis and located on one radial side of said axis of rotation, said eccentric portion defining a circular axial profile;
- and
- a counter eccentric lobe integrally formed with said crankshaft on the radial side of said crankshaft opposite said eccentric portion, said counter eccentric lobe being located axially adjacent said eccentric portion and located within said circular axial profile.
Dependencies are inferred from the claim text.