Water-injected screw compressor element

Details Water-injected screw compressor element Water-injected screw compressor element

2006-02-22

2009-11-10

Denion, Thomas E. (Department: 3748)

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

C418S098000

Reexamination Certificate

active

07614862

ABSTRACT:
Improved water-injected screw compressor element which mainly consists of a housing (2) on the one hand, confining a rotor chamber (5) with an inlet (6) on one far end and an outlet (7) on the other far end and in which two co-operating rotors (3, 4) are provided which are bearing-mounted in the housing (2) with their shaft (16, 20) by means of water-lubricated bearings (17, 18, 21, 22), characterised in that for every rotor are provided two pistons, a first piston (37, 38) and a second piston (17, 21) respectively, which can be each axially shifted in a guide, whereby each of these pistons (17, 21, 37, 38) makes contact with the rotor (3, 4) concerned with one side or is part of it, and makes contact with a pressure chamber (41, 42, 43, 44) with an opposite side, in order to partly or almost entirely compensate for axial force components exerted by the compressed gasses on the rotors.

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patent: 1 013 221 (2001-11-01), None
patent: WO 8303641 (1983-10-01), None
patent: WO 02070900 (2002-09-01), None

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