Back to results
US 4,730,994 AGranted
Compressor with improved exposed outboard thrust plate and method of assembly
AssigneeTecumseh Products Company
InventorMichael J. Maertens
Life of this patent
Estimating the term…
Abstract
A hermetically sealed rotary compressor and its method of assembly are disclosed, which compressor and method utilize an end plate having an annular groove on its interior surface and an annular recess on its exterior surface. A securing weld in the centroidal plane of the end plate is provided at the junction of a compressor housing mated with the end plate annular groove.
Claims6
A hermetically sealed rotary compressor comprising:
- a housing having an open end and a closed end;
- an end plate sealing said open end and cooperating with said housing to define a housing cavity;
- and
- means for compression of gaseous fluids positioned in said housing cavity;
- said end plate including an interior surface, an exterior surface, a groove at the perimeter of said interior surface, and a centroidal plane through the center of mass of said end plate generally parallel to and approximately midway between said interior and exterior surfaces, wherein said housing matingly contacts said groove and said housing cavity is hermetically sealed by a weldment joining said housing and said end plate approximately in said centroidal plane.
2 more elements
A hermetically sealed compressor comprising:
- a housing defining an open end and a closed end,
- an end plate mounted on said housing to seal said open end and cooperate with said housing to define a housing cavity,
- an electric motor including a rotor and stator,
- a crankshaft secured to and operable by said rotor,
- said electric motor and crankshaft positioned in said housing cavity;
- a cylinder block and journal bearing positioned in said housing cavity, which cylinder block and bearing cooperate with said end plate to define a compression chamber, and
- means for compression of gaseous fluids positioned in said compression chamber and operable by said crankshaft;
- said end plate including an interior thrust bearing surface, an exterior surface, an annular groove at approximately the perimeter of said interior surface, and a centroidal plane through the center of mass of said end plate generally bisecting the thickness of said end plate wherein said housing matingly contacts said annular groove and is hermetically sealed to said end plate by a weldment about said housing approximately in said centroidal plane.
5 more elements
A method of sealing and relieving welding stresses at assembly of a hermetically sealed rotary compressor which comprises the steps of:
- (1) providing a compressor housing and an end plate defining an interior surface with an annular groove and an exterior surface with a stress relief annular recess, said end plate having a centroidal plane through the center of mass of said end plate generally parallel to and approximately midway betwen said interior and exterior surfaces,
- (2) mating said compressor housing into said end plate groove;
- (3) adjusting said housing in said groove to its proper depth;
- and
- (4) welding said housing and end plate at their juncture in said centroidal plane.
2 more elements
Dependencies are inferred from the claim text.