Patent ID: 9488155
Filing Date: 2016-11-08
CPC Classification: F03B,H02K,Y02E

Claim Text:
1. An ocean current power generating apparatus using dual-duct with boundary layer control effect, comprising: at least one power generating unit, comprising: a turbine having a shaft box; an inner duct, being a hollow structure or filled with foam material therein, wherein the turbine is located inside the inner duct, and an outer diameter of an inflow side of the inner duct is less than an outer diameter of an outflow side of the inner duct; and an outer duct, being a single-piece structure without a hollow therein, wherein the outflow side of the inner duct is located inside the outer duct, an outer diameter of an inflow side of the outer duct is less than an outer diameter of an outflow side of the outer duct, and the boundary layer control effect for the inner duct is generated due to a gap existed between the outflow side of the inner duct and the outer duct.