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US 4,750,864 AGranted
Compressor lubrication and noise reduction system
AssigneeCarrier Corporation
InventorsJacob A. Bayyouk, Max P. Waser
Life of this patent
Estimating the term…
Abstract
The uncovering of the opening of the oil pickup tube is avoided by preventing the formation of a stable vortex. The prevention of the formation of a stable vortex is achieved by making the paddles of the impeller axially asymmetrical by at least a minimum critical value.
Claims5
An oil lubrication and noise suppression system comprising:
- an oil sump:
- a crankshaft rotatable about an axis and defining a centrifugal oil pump:
- an oil pickup tube extending into said oil sump and secured to said crankshaft coaxial with said axis and rotatable with said crankshaft about said axis as a unit;
- and
- an impeller axially asymmetrically mounted on said pickup tube within said oil sump whereby upon rotation of said crankshaft, said oil pickup tube and said impeller as a unit causes the production of froth and the pumping of oil while preventing the formation of a stable vortex.
2 more elements
In an oil lubrication and noise suppression system comprising a crankshaft defining a centrifugal oil pump and a lubricant pickup tube the improvement comprising:
- an impeller axially asymmetrically mounted on said pickup tube such that upon rotation of said crankshaft, pickup tube and impeller as a unit oil is pumped and froth is produced without the formation of a stable vortex.
Dependencies are inferred from the claim text.