Compressor with improved lubricating system
AssigneeSiemens Aktiengesellschaft
InventorsBernd Gromoll, Peter Gulden
Life of this patent
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Abstract
Hermetically encapsulated rotary piston compressor with horizontally disposed, at least partially hollow crankshaft. The lubricating oil is sucked up by a dynamic vacuum created in a compressed gas line, out of an oil sump, by means of an oil suction pipe, and is conveyed together with the compressed gas into the hollow part of the crankshaft, which has inside the cylinder housing radial bores for oil supply to the moving parts of the compressor. According to the invention, the oil suction pipe is mounted for rotation about the axis of the crankshaft. Thereby the oil supply is maintained in any position resulting from any rotation of the compressor about the horizontal axis of its crankshaft.
Claims6
An oil-lubricated rotary piston compressor with an improved lubricating system, comprising:
- an oil sump;
- a compression chamber;
- a piston movable within said chamber;
- an axially elongated crankshaft driving said piston and having a bore through which oil from the sump is supplied to the piston;
- a conduit connecting said bore with said chamber, said conduit having a constricted region intermediate said chamber and bore;
- a nozzle located in said constricted region;
- a diffuser located adjacent said nozzle;
- an oil suction conduit having a proximal end in communication with said region and a distal end in communication with said sump, said oil suction conduit having a center of gravity;
- and
- means for pivotally securing said oil suction conduit in a manner that it is rotatable in a plane which is perpendicular to said crankshaft and in a manner that an imaginary line passing through said distal end and center of gravity intersects said crankshaft.
Dependencies are inferred from the claim text.