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US 6,585,496 B1Granted
Self-regulating oil reservoir for scroll compressor
AssigneeScroll Technologies
InventorZili Sun
Life of this patent
Estimating the term…
Abstract
A scroll compressor is provided with an oil reservoir that is self-regulating dependent on the overall lubricant level in the compressor. The reservoir is provided by a structural member having an inner rim and a bottom wall. The bottom wall is provided with a metering orifice that returns lubricant to the main sump. The metering orifice will ensure that undue amounts of lubricant are not maintained in the reservoir during low oil operation.
Claims10
A sealed compressor comprising:
- a sealed housing;
- a compressor pump unit mounted adjacent one end of said sealed housing;
- an electric motor having a stator and a rotor, said stator being provided with windings adjacent a lower end of said housing spaced from said compressor pump unit, said rotor having a lower counterweight attached to said rotor to be driven with said rotor;
- a shaft connected to said rotor and extending to be operatively connected to said compressor pump unit, said shaft extending downwardly beyond said motor toward said lower end of said housing;
- a lubricant main sump provided in said housing at said lower end;
- and
- a lubricant reservoir provided by a structural member having a lower wall with a bleed orifice such that lubricant in said reservoir can return through said bleed orifice to said main sump.
4 more elements
A sealed scroll compressor comprising:
- a sealed housing;
- a scroll compressor pump unit mounted adjacent one end of said sealed housing;
- an electric motor having a stator and a rotor, said stator being provided with windings adjacent a lower end of said housing spaced from said scroll compressor pump unit, said rotor having a lower counterweight attached to said rotor to be driven with said rotor;
- a shaft connected to said rotor and extending to be operatively connected to said scroll compressor pump unit, said shaft extending downwardly beyond said motor toward said lower end of said housing;
- a lubricant main sump provided in said housing at said second end;
- and
- a lubricant reservoir provided by a structural member positioned adjacent said second end of said stator, said structural member having a lower wall with a bleed orifice such that lubricant in said reservoir can return through said bleed orifice to said main sump, said structural member having a radially outer surface in sealed contact with an inner wall of said housing, and a radially inner rim formed on said structural member extending axially upwardly above an axially lowermost end of said windings, said rotor having a lower end ring and said rim extending axially upward at a position radially intermediate said end lower end ring and said lower windings.
4 more elements
Dependencies are inferred from the claim text.