Diffuser for centrifugal compressor

Details Diffuser for centrifugal compressor Diffuser for centrifugal compressor

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 29/44 (2006.01)

Patent

CA 2539912

A diffuser (30) for a centrifugal compressor (60) having a flow slot (34) formed between the leading edge portion (36) of a diffuser vane (32) and an adjoining diffuser wall (70) for the passage of working fluid (67) over the vane from the pressure side ((40) to the suction side (42) of the vane. The portion (38) of the working fluid passing over the vane is injected into the flow boundary region (43), thereby minimizing the growth of a flow separation zone (58) along the suction side.

L'invention concerne un diffuseur (30) pour compresseur (60) centrifuge comportant une fente (34) d'écoulement, formée entre la partie (36) de bord d'attaque d'une aube (32) du diffuseur et une paroi (70) adjacente du diffuseur, et qui laisse passer par-dessus l'aube un fluide de travail (67), du côté pression (40) au côté aspiration (42) de celle-ci. La partie (38) du fluide de travail qui passe par-dessus l'aube est injectée dans une région (43) limite d'écoulement, ce qui permet de réduire au minimum la croissance d'une zone de séparation (58) d'écoulement côté aspiration.

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