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US 6,746,216 B2Granted
Scroll compressor with vented oil pump
AssigneeScroll Technologies
InventorZili Sun
Life of this patent
Estimating the term…
Abstract
An oil pump for a scroll compressor has a bearing hub with a vent disposed between at least one fluid inlet in the bearing hub and a thrust washer. The vent provides an additional fluid flow path to equalize fluid pressure underneath the thrust washer. By minimizing or eliminating low fluid pressure zones with the bearing hub, fluid flow through the oil pump can be maintained at a constant level.
Claims20
A vented apparatus for an fluid pump having an input shaft, comprising:
- a thrust washer having an opening fluidically coupled to the fluid supply passage of the input shaft;
- and
- a bearing member that can accommodate the input shaft, wherein the thrust washer is disposed in the bearing member, the bearing member having at least one inlet fluidically coupled to the thrust washer opening,
- wherein the bearing member has at least one vent disposed between the thrust washer and said at least one inlet, and wherein said at least one vent is fluidically coupled to the thrust washer opening.
1 more element
A compressor, comprising:
- a compressor pump;
- an input shaft for driving said compressor pump and having a fluid supply passage;
- a thrust washer having an opening fluidically coupled to the fluid supply passage;
- and
- a bearing member coupled to the input shaft, wherein the thrust washer is disposed between the bearing member and the input shaft, the bearing member having at least one inlet fluidically coupled to the thrust washer opening,
- wherein the bearing member has at least one vent disposed between the thrust washer and said at least one inlet, and wherein said at least one vent is fluidically coupled to the thrust washer opening.
3 more elements
A scroll compressor, comprising:
- a first scroll including a base and scroll wrap extending from said base;
- a second scroll including a base and a scroll wrap extending from said base, said scroll wraps of said first and second scrolls interfitting to define a plurality of compression chambers;
- an input shaft coupled to the second scroll and having a fluid supply passage;
- a thrust washer having an opening fluidically coupled to the fluid supply passage;
- a bearing member coupled to the input shaft, wherein the thrust washer is disposed between the bearing member and the input shaft, the bearing member having a plurality of inlets fluidically coupled to the thrust washer opening, wherein the bearing member has at least one vent disposed between the thrust washer and at least one of said plurality of inlets, and wherein said at least one vent is fluidically coupled to the thrust washer opening;
- and
- a fluid supply area fluidically coupled to said plurality of inlets.
4 more elements
Dependencies are inferred from the claim text.