F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 25/18 (2006.01) B01D 45/14 (2006.01) F02C 7/06 (2006.01)
Patent
CA 2715190
The invention relates to a centrifugal oil separator having a variable channel section comprising a moving, rotating hollow rod (20). Said rod has at least one air channel opening (26) and a piston (30) fitted in the rod such that the piston divides the inside of the rod into two mutually sealed compartments, the downstream compartment (32a) provided with the air channel opening or openings being subjected to ambient pressure and the other upstream compartment (32b) being subjected to the variable pressure of the air/oil chamber. The piston, affected by the pressure difference between the two compartments, is capable of moving in translation with the inside of the rod between two extreme positions, a first position wherein the air channel opening or openings are free and a second position wherein the air channel openings are partially blocked by the piston.
L'invention concerne un déshuileur centrifuge à section de passage variable, comportant un arbre creux (20) mobile en rotation. Cet arbre a au moins un orifice de passage de l'air (26) et un piston (30) logé dans l'arbre de façon à diviser l'intérieur de l'arbre en deux compartiments étanches l'un par rapport à l'autre, le compartiment aval (32a) pourvu du ou des orifices de passage de l'air étant soumis à une pression ambiante et l'autre compartiment amont (32b) étant soumis à la pression variable de l'enceinte air/huile. Sous l'effet d'une différence de pression entre les deux compartiments, le piston est apte à se déplacer en translation à l'intérieur de l'arbre entre deux positions extrêmes, une première position dans laquelle le ou les orifices de passage de l'air sont entièrement dégagés et une seconde position dans laquelle le ou les orifices de passage de l'air sont partiellement obstrués par le piston.
Goudreau Gage Dubuc
Snecma
LandOfFree
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