Fluid compressor having lubrication for two spiral blade compres

Details Fluid compressor having lubrication for two spiral blade compres Fluid compressor having lubrication for two spiral blade compres

1992-01-28

1993-06-08

Vrablik, John J.

Rotary expansible chamber devices

Grooved abutting cylinder-rotating member end surfaces

Non-working fluid directed to groove

418 91, 418 99, 418188, 418220, F04C 18107, F04C 2902

Patent

active

052173615

ABSTRACT:
A compressor includes a casing having an oil reservoir, a cylinder situated within the casing, a cylindrical rotary body situated eccentrically within the cylinder, the rotary body having first and second spiral grooves extending in opposite directions from the middle part of the rotary body to both ends of the rotary body, first and second spiral blades fitted in the first and second spiral grooves, the blades having outer peripheral surfaces brought into contact with the inner peripheral surface of the cylinder, dividing the space defined by the inner peripheral surface of the cylinder and the rotary body into a plurality of working chambers, thereby constituting first and second compression sections, wherein the first and second blades freely project from and retreat in the first and second spiral grooves in the radial direction of the rotary body, driving means for rotating the cylinder and the rotary body relative to each other, a first refrigerant passage formed in the rotary body and opening to an area between the first and second compression sections and to one axial end portion of the rotary body, and oil supply means having first and second oil supply holes opening respectively to the first and second compression sections, and supplying oil in the oil reservoir to the first and second compression sections via the first and second oil supply holes.

REFERENCES:
patent: 4402653 (1983-09-01), Maruyama et al.
patent: 4871304 (1989-10-01), Iida et al.
patent: 4872820 (1989-10-01), Iida et al.
patent: 5026264 (1991-06-01), Morozumi et al.
patent: 5090874 (1992-02-01), Aikawa et al.

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