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US 5,489,198 AGranted
Scroll machine sound attenuation
AssigneeCopeland Corporation
InventorsRobert J. Comparin, Kent E. Logan
Life of this patent
Estimating the term…
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.
Claims16
A scroll-type machine comprising:
- a first scroll member having a first spiral wrap projecting outwardly from an end plate;
- a second scroll member having a second scroll wrap projecting outwardly from an end plate, said second spiral wrap interleaved with said first spiral wrap to define a plurality of fluid chambers therebetween;
- a powered drive shaft rotatably supported by a bearing housing, said drive shaft being drivingly connected to said second scroll member to cause said scroll members to cyclically orbit relative to one another to move said fluid chambers;
- and
- a biasing member disposed between said second scroll member and another component of said compressor for urging said second scroll member in a single specified torsional direction during the entire cycle of said orbiting motion of said second scroll member.
2 more elements
A scroll-type machine comprising:
- a non-orbiting scroll member having a first spiral wrap projecting outwardly from an end plate;
- an orbiting scroll member having a second scroll wrap projecting outwardly from an end plate, said second scroll wrap interleaved with said first spiral wrap to define a plurality of fluid chambers therebetween;
- a drive shaft rotatably supported by a bearing housing, said drive shaft being drivingly connected to said orbiting scroll member to cause said orbiting scroll to cyclically orbit relative to said non-orbiting scroll;
- and
- a biasing member disposed between said bearing housing and said orbiting scroll member, said biasing member urging said orbiting scroll member in a single specified torsional direction during the entire cycle of said said orbiting motion of said orbiting scroll member.
2 more elements
A scroll-type machine comprising:
- a shell;
- a non-orbiting scroll member disposed in said shell and having a first spiral wrap projecting outwardly from an end plate;
- an orbiting scroll member disposed in said shell and having a second scroll wrap projecting outwardly from an end plate, said second scroll wrap interleaved with said first spiral wrap to define a plurality of moving fluid chambers therebetween;
- a drive shaft rotatably supported by a bearing housing, said drive shaft being drivingly connected to said orbiting scroll member to cause said orbiting scroll to cyclically orbit relative to said non-orbiting scroll;
- and
- a biasing member disposed between said shell and said orbiting scroll member, said biasing member urging said orbiting scroll member in a single specified torsional direction during the entire cycle of said orbiting motion of said orbiting scroll member.
3 more elements
Dependencies are inferred from the claim text.