DUCTED SYSTEM FOR HELICAL TURBINE

摘要

PURPOSE: A duct system for a helical turbine is provided to maximize the torque of a blade in the torque increase area of a helical turbine since a guide duct changes the direction of the fluid to flow into the helical turbine to be perpendicular to the surface of a blade. CONSTITUTION: A helical turbine(10) with blades(16) is installed to be perpendicular to the flow direction of the fluid. A torque increase area(&thgr;a) is set on a part of the helical turbine, into which the fluid flows. The fluid continuously flows into in the torque increase area in a state of being perpendicular to the surface of the blade. A guide duct(20) for guiding the direction of the fluid is arranged in the torque increase area. The torque of the blade increases in the torque increase area of the helical turbine.