Turbomachine compressor

F - Mech Eng,Light,Heat,Weapons – 04 – D

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Details

F04D 27/00 (2006.01) F04D 29/56 (2006.01) F04D 29/68 (2006.01)

Patent

CA 2728740

Turbomachine compressor comprising variable-pitch vanes comprising an aerofoil section connected by a mounting plate (17) of circular outline to a pivot (18) guided in rotation in an orifice in a casing (14), the mounting plate of the vane comprising at least one notch (60) for bleeding air from the compressor stream, this notch being intended to communicate with a hole (62) in the casing in order to remove the air bled off when the vanes are in a first position, and to be closed off by this casing when the vanes are in a second position, so that the flow rate of bled air depends on the pitch angle of the vanes.

Compresseur de turbomachine, comprenant des aubes à calage variable comportant une pale reliée par une platine (17) à contour circulaire à un pivot (18) guidé en rotation dans un orifice d'un carter (14), la platine de l'aube comportant au moins une échancrure (60) de prélèvement d'air dans la veine du compresseur, cette échancrure étant destinée à communiquer avec un trou (62) du carter pour l'évacuation de l'air prélevé lorsque les aubes sont dans une première position, et à être obturée par ce carter lorsque les aubes sont dans une seconde position, de façon à ce que le débit de prélèvement d'air dépende de l'angle de calage des aubes.

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