EP 2484916 B1 20130918 - Centrifugal compressor having variable geometry diffuser and method thereof
Title (en)
Centrifugal compressor having variable geometry diffuser and method thereof
Title (de)
Zentrifugalkompressor mit Diffusor mit variabler Geometrie und Verfahren dafür
Title (fr)
Compresseur centrifuge doté d'un diffuseur à géométrie variable et procédé correspondant
Publication
Application
Priority
EP 11153299 A 20110204
Abstract (en)
[origin: EP2484916A1] A centrifugal compressor (1) comprises a plurality of diffuser vanes (5) arranged in a circumferentially spaced array about a machine axis (9). Each diffuser vane (5) is mounted on a respective shaft (10). Each of the shafts (10) is coupled to a ring (8) that is rotatable about the machine axis (9). A worm drive (11,12) is provided that comprises a worm (11) that meshes with a worm gear (12) or a segment of a worm gear (12) mounted along at least a portion of the circumference of the ring (8). A step motor (14) is coupled to the worm (11. The step motor (14) is operable to rotate the worm (11) about a worm axis (13) perpendicular to the machine axis (9), such that the worm drive (11,12) transmits rotational torque from the step motor (14) to said ring (8), to resultantly vary the position of the diffuser vanes (5).
IPC 8 full level
F04D 29/46 (2006.01); F01D 17/16 (2006.01)
CPC (source: EP US)
F04D 29/462 (2013.01 - EP US); F05D 2250/52 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2484916 A1 20120808; EP 2484916 B1 20130918; CN 102628453 A 20120808; PL 2484916 T3 20140228; US 2012201701 A1 20120809
DOCDB simple family (application)
EP 11153299 A 20110204; CN 201210022432 A 20120201; PL 11153299 T 20110204; US 201213364516 A 20120202