Back to results
US 6,109,899 AGranted
Cantilever mount orbiting scroll with shaft adjustment
AssigneeScroll Technologies
InventorsThomas R. Barito, Jason J. Hugenroth
Life of this patent
Estimating the term…
Abstract
A scroll compressor of the type having a cantilever mounted shaft is provided with a carbon crankcase bearing. Further, the bearing mounting the eccentric pin within the orbiting scroll is also formed of a carbon material. The bearing mounting the lower end of the shaft is further formed of the carbon material. The carbon bearing insures that the shaft will be quickly worn away should there be shaft misalignment.
Claims10
A scroll compressor comprising:
- a first scroll member having a base and a generally spiral wrap extending from said base;
- a second scroll member having a base and a generally spiral wrap extending from said base, said wraps of said first and second scroll members interfitting to define compression chambers, said first scroll member having a mount portion extending away from said second scroll member to receive a drive shaft;
- a crankcase mounted beneath said first scroll member, and on a side opposed from said second scroll member;
- a shaft having an eccentric pin extending through said crankcase, and into a slider block mounted in said mount portion of said first scroll member, a first bearing received between said slider block and said mount portion, and an electric motor driving said shaft;
- a second bearing mounted in said crankcase and surrounding said shaft, said pin of said shaft extending through said second bearing and into said mount portion of said first scroll member;
- a third bearing mounted at an opposed end of said shaft and on a remote side of said motor from said first bearing;
- and
- at least one of said first, second and third bearings having a material composition including carbon particles deposited into a resin.
5 more elements
A method of operating a scroll compressor comprising the steps of:
- 1) providing a scroll compressor including a first and second scroll member, each having a base and a generally spiral wrap extending from said base, said wraps of said first and second scroll members interfitting to define compression chambers, said first scroll member having a mount portion extending away from said second scroll member, a shaft including a mount pin extending into a slider block mounted in said mount portion of said first scroll member, a first bearing between said slider block and said mount position, said shaft mounted to be driven by an electric motor, said shaft having said mount pin extending into said slider block, and said mount portion of said first scroll member at one end of said motor, a portion of said shaft intermediate said motor and said pin being mounted in a second bearing in a crankcase, said mount pin extending entirely through said second bearing such that said mount pin is cantilever mounted within said second bearing, said shaft being mounted at an opposed end of said motor in a third bearing, and one of said first, second and third bearing being formed of an outer metal portion and an inner portion including a carbon material deposited into a resin layer;
- 2) driving said first scroll member to orbit relative to said second member by driving said shaft with said electric motor;
- and
- 3) wearing portions of at least one of said shaft and said slider block which are in contact with edges of said one bearing should said first, second and third bearings be misaligned relative to each other, said carbon material causing said portions to be quickly worn away.
1 more element
Dependencies are inferred from the claim text.