Abstract: A compressor may include non-orbiting and orbiting scrolls, a hub plate, and primary and secondary discharge valve assemblies. The non-orbiting scroll includes a first end plate having primary and secondary discharge passages. The hub plate may be mounted to the non-orbiting scroll and may include a main body and a central hub extending axially from the main body. The central hub may include a recess and a hub aperture. The primary discharge valve assembly may include a retainer and a primary valve member. In a closed position, the primary valve member may restrict fluid flow between the discharge chamber and the primary discharge passage. The secondary discharge valve assembly may include a secondary valve member that selectively allows and restricts fluid communication between the secondary discharge passage and the hub aperture of the central hub.

Abstract: A compressor may include non-orbiting and orbiting scrolls, a hub plate, and primary and secondary discharge valve assemblies. The non-orbiting scroll includes a first end plate having primary and secondary discharge passages. The hub plate may be mounted to the non-orbiting scroll and may include a main body and a central hub extending axially from the main body. The central hub may include a recess and a hub aperture. The primary discharge valve assembly may include a retainer and a primary valve member. In a closed position, the primary valve member may restrict fluid flow between the discharge chamber and the primary discharge passage. The secondary discharge valve assembly may include a secondary valve member that selectively allows and restricts fluid communication between the secondary discharge passage and the hub aperture of the central hub.

Abstract: A compressor assembly may include a hermetic shell, a base and a mounting assembly. The hermetic shell may include a lower cover defining a first aperture. The base may define a second aperture. The mounting assembly may include a first isolation member and a fastener. The first isolation member may define a third aperture and may be located on a first side of the base. The third aperture may have a first portion defining a first inner diameter. The fastener may extend through the first, second and third apertures. The fastener may include a shank having a first radial protrusion defining a first outer diameter greater than the first inner diameter.

Abstract: A compressor assembly may include a hermetic shell, a base and a mounting assembly. The hermetic shell may include a lower cover defining a first aperture. The base may define a second aperture. The mounting assembly may include a first isolation member and a fastener. The first isolation member may define a third aperture and may be located on a first side of the base. The third aperture may have a first portion defining a first inner diameter. The fastener may extend through the first, second and third apertures. The fastener may include a shank having a first radial protrusion defining a first outer diameter greater than the first inner diameter.

Abstract: A scroll machine has a first scroll member and a second scroll member. The end plates of at least one of the scroll members is only machined in the area which interfaces with the wrap tip of the opposing scroll member. A clearance gap is maintained everywhere else in order to ensure sealing occurs.

Abstract: A scroll-type machine has a motion controlling member for preventing relative rotation between a first and a second scroll member while allowing relative orbiting motion therebetween. The scroll-type machine includes a novel arrangement of a spring or other flexible member for biasing the motion controlling member in a specific direction. The biasing of the motion controlling member operates to reduce the mechanical impact noise or rattle which is caused by the vibration of the machine's operating components.

Abstract: A scroll-type machine has a motion controlling member for preventing relative rotation between a first and a second scroll member while allowing relative orbiting motion therebetween. The scroll-type machine includes a novel arrangement of a spring or other flexible member for biasing the motion controlling member in a specific direction. The biasing of the motion controlling member operates to reduce the mechanical impact noise or rattle which is caused by the vibration of the machine's operating components.

Abstract: A scroll-type machine has a motion controlling member for preventing relative rotation between a first and a second scroll member while allowing relative orbiting motion therebetween. The scroll-type machine includes a novel arrangement of a spring or other flexible member for biasing the second scroll member in a torsional direction. Biasing of the second scroll member operates to reduce the mechanical impact noise or rattle which is caused by the vibration of the machines operating components.

Abstract: A scroll-type machine has a motion controlling member for preventing relative rotation between a first and a second scroll member while allowing relative orbiting motion therebetween. The scroll-type machine includes a novel arrangement of a spring or other flexible member for biasing the motion controlling member in a specific direction. The biasing of the motion controlling member operates to reduce the mechanical impact noise or rattle which is caused by the vibration of the machine's operating components.

Abstract: A scroll machine designed to provide an unbalanced loading of the orbiting scroll and anti-rotation coupling in a direction which adds to the moment caused by contact forces between the scroll wraps during normal operation. The loading decreases the sound level of the machine and is achieved through the use of unbalanced flank gas leakage forces and flank contact forces, which are created by providing a targeted initial swing radius bias and/or a generating radius bias to either one or both of the scroll wraps. The generating radius biasing can be singular or plural on a given scroll wrap set. A number of different techniques for obtaining such biasing are disclosed.

Abstract: A hermetic refrigeration compressor is disclosed which includes a baffle member secured to the inner surface of the outer shell in overlying relationship to a suction inlet port. The suction baffle includes a dome shaped portion centrally disposed with respect to the inlet port and provides axially upper and lower openings defined between the baffle member and the inner surface of the outer shell.