Centrifugal impeller for a compressor

Details Centrifugal impeller for a compressor Centrifugal impeller for a compressor

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 29/30 (2006.01)

Patent

CA 2762308

The invention relates to a centrifugal impeller for a compressor, through which a fluid is to pass, said impeller (18) including blades (24, 25), each having a leading edge and a trailing edge (24F, 25F), the rotation of said impeller (18) drawing the fluid at the front of the impeller, said fluid being discharged at the outer periphery of the impeller (18) at the trailing edge (24F, 25F) of the blades, said blades (24, 25) being such that, in a radial cross-section intersecting the trailing edge (24F, 25F) of the blades, the latter are curved in a direction opposite to that of the rotation of the impeller and the trailing edge portion of said blades (24, 25) is straightened in the impeller rotation direction such that it forms an end fin (26, 27) for diverting the fluid flow by radially adjusting same.

Rouet centrifuge de compresseur destiné à être traversé par un fluide, ce rouet (18) comprenant des pales (24, 25) ayant chacune un bord d'attaque et un bord de fuite (24F, 25F), la rotation de ce rouet (18) aspirant le fluide par l'avant du rouet, ce fluide sortant à la périphérie extérieure du rouet (18), au niveau du bord de fuite (24F, 25F) des pales, ces pales (24, 25) étant telles que, dans un plan de coupe radial coupant le bord de fuite (24F, 25F) de ces pales, elles sont courbées dans le sens inverse de la rotation du rouet et la partie de bord de fuite de ces pales (24, 25) est redressée dans le sens de la rotation du rouet de sorte qu'elle forme une ailette d'extrémité (26, 27) permettant de dévier l'écoulement du fluide en redressant radialement celui-ci.

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