An impeller

Details An impeller An impeller

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 5/30 (2006.01) F04D 29/30 (2006.01) F04D 29/32 (2006.01) F04D 29/36 (2006.01)

Patent

CA 2210335

An impeller (10) has a hub (12) with a part spherical portion (22) between front and rear faces. A plurality of blades (11a) are attached to the hub (12), each blade (11a) having a root portion (16) complementarily configured to the spherical portion (22). Adjacent blades (11a) define passageways therebetween, the passageways converging between a fluid inlet and a fluid outlet. The hub (12) can comprise two relatively rotating portions, with the blades (11a) attached to each portion, the relative rotation of the hub portions varying the pitch of the blades (11a).

Une hélice (10) présente un moyeu (12) doté d'une partie (22) partiellement sphérique entre les faces avant et arrière. Plusieurs pales (11a) sont fixées au moyeu (12), chacune (11a) présentant un talon (16) coïncidant avec la forme de la partie sphérique (22). Les pales adjacentes (11a) délimitent entre elles des passages qui convergent entre une entrée de fluide et une sortie de fluide. Le moyeu (12) peut comporter deux parties qui tournent l'une par rapport à l'autre, les pales (11a) étant fixées à chaque partie et la rotation relative des parties de moyeu modifiant le pas des pales (11a).

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