Rotary type multi-stage compressor with vanes biased by oil pres

Details Rotary type multi-stage compressor with vanes biased by oil pres Rotary type multi-stage compressor with vanes biased by oil pres

1991-11-15

1993-09-07

Vrablik, John J.

Rotary expansible chamber devices

Multistage

Sliding abutment

418 13, 418 60, 418 93, 418 96, 418249, 418268, F04C 2300, F04C 2902

Patent

active

052422801

ABSTRACT:
A multi-stage rotary type compressor is constituted in such a manner that an electric motor and a plurality of compression elements to be driven by the electric motor are disposed in a closed container and the compression elements thus-disposed are sequentially connected in series. The compressor thus-constituted is arranged in such a manner that the space in the closed container is filled with the pressure discharged from the final stage. Furthermore, lubricating oil, the pressure of which is equivalent to the level of the pressure discharged from each compression element, is introduced into a back side chamber of a vane of each compression element to urge the back side of each vane with the pressure of lubricating oil. As a result, the wear of the tip end of the vane and the input loss are prevented. Therefore, satisfactory durability and compression efficiency can be obtained.

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