Wind powered turbine in a tunnel

F - Mech Eng,Light,Heat,Weapons – 03 – B

Patent

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F03B 15/06 (2006.01) F03D 7/00 (2006.01)

Patent

CA 2557242

A wind powered turbine (30) has a conduit (34). A middle conduit portion (46) is located between inlet and outlet conduit portions (44, 48), having a main inlet (54) and outlet (56) of the conduit (34), respectively. A rotor (80) having a shaft (82) with blades (88) extending therefrom is located in the middle conduit portion (46). The blades (88) are located completely within the middle conduit portion (46). Preferably, a splitter (60) is located in the inlet conduit portion (44) to provide upper and lower sub-tunnels (61, 62) that both feed into the middle conduit portion (46). Upper and lower interior walls (91, 92) of the middle conduit portion (46) have substantially circular plane shapes that are substantially centered at the rotational axis (84) of the shaft (82). Clearance gaps (93, 94) are located between the blades (88) and the upper and lower interior walls (91, 92), respectively.

L'invention concerne une turbine éolienne (30) munie d'un conduit (34). Une partie de conduit médiane (46) est située entre des parties de conduit d'entrée et de sortie (44, 48) présentant une entrée principale (54) et une sortie principale (56) du conduit (34), respectivement. Un rotor (80) comprenant un arbre (82) prolongé de pales (88) est situé dans la partie de conduit médiane (46). De préférence, un inclineur (60) est disposé dans la partie de conduit d'entrée (44) pour ménager des tunnels secondaires supérieur et inférieur (61, 62) débouchant tous deux dans la partie de conduit médiane (46). Des parois intérieures supérieure et inférieure (91, 92) de la partie de conduit médiane (46) présentent des formes planes généralement circulaires, sensiblement centrées au niveau de l'axe de rotation (84) de l'arbre (82). Des espaces libres (93, 94) sont situés entre les pales (88) et les parois intérieures supérieure et inférieure (91, 92), respectivement. Clearance gap

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