Drive positioning mechanism for a variable pipe diffuser

Details Drive positioning mechanism for a variable pipe diffuser Drive positioning mechanism for a variable pipe diffuser

1997-08-06

1999-04-20

Ryznic, John E.

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

415166, 415150, 74 8918, 74409, 74526, F01B 2502

Patent

active

058952047

ABSTRACT:
A drive positioning mechanism for use in a variable pipe diffuser for a centrifugal compressor. A rotational drives means is fixedly attached to the housing of a centrifugal compressor with a pinion gear mounted thereto. A rack gear is mounted to the inner ring and adapted to engage in meshing arrangement with the pinion gear. The rotational drive means is operable to position the inner ring between a fully open position and a partially closed position. A travel limiter is provided to positively limited the travel of the inner ring at the filly open and the partially closed positions.

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