Abstract: A triaxial helicopter includes a fuselage and an airframe, and three rotor modules and a driving source are installed to the airframe, and two turbofans are mounted at the tail of the airframe, and the horizontal elevator is installed between the two turbofans and coupled to the driving source through a link rod module, so that when the triaxial helicopter is operated, the two turbofans are operated to produce a backward airflow to assist propelling the triaxial helicopter to move forward, so as to improve the flying speed of the triaxial helicopter. When it is necessary to ascend or descend the triaxial helicopter, the driving source controls the link rod module to adjust the yaw direction of the horizontal elevator according to an ascending or descending requirement, and the airflow produced by the turbofans blows in a direction with the horizontal elevator to increase the lifting force of the triaxial helicopter.

Abstract: A triaxial helicopter includes a fuselage and an airframe, and three rotor modules and a driving source are installed to the airframe, and two turbofans are mounted at the tail of the airframe, and the horizontal elevator is installed between the two turbofans and coupled to the driving source through a link rod module, so that when the triaxial helicopter is operated, the two turbofans are operated to produce a backward airflow to assist propelling the triaxial helicopter to move forward, so as to improve the flying speed of the triaxial helicopter. When it is necessary to ascend or descend the triaxial helicopter, the driving source controls the link rod module to adjust the yaw direction of the horizontal elevator according to an ascending or descending requirement, and the airflow produced by the turbofans blows in a direction with the horizontal elevator to increase the lifting force of the triaxial helicopter.

Abstract: A vertical axis wind turbine blade is revealed. The vertical axis wind turbine blade includes a blade frame formed by assembly plates disposed at regular intervals and blade bodies each of which pivoted between two adjacent assembly plates. Stoppers are disposed between the assembly plates and the blade bodies. The stopper is used to stop on one side of the blade body corresponding to a downwind surface of the assembly plate. The blade bodies pivotally connected to the blade frame move along with the blade frame to be in an open or a closed position. When the wind blows the upwind surface, the blade body is stopped by the stopper and in the closed position so as to receive the wind power. While the wind blowing the downwind surface, the blade body is in the open position to reduce the wind resistance. Thus the wind turbine efficiency is dramatically improved.

Abstract: A vertical axis wind turbine blade is revealed. The vertical axis wind turbine blade includes a blade frame formed by assembly plates disposed at regular intervals and blade bodies each of which pivoted between two adjacent assembly plates. Stoppers are disposed between the assembly plates and the blade bodies. The stopper is used to stop on one side of the blade body corresponding to a downwind surface of the assembly plate. The blade bodies pivotally connected to the blade frame move along with the blade frame to be in an open or a closed position. When the wind blows the upwind surface, the blade body is stopped by the stopper and in the closed position so as to receive the wind power. While the wind blowing the downwind surface, the blade body is in the open position to reduce the wind resistance. Thus the wind turbine efficiency is dramatically improved.

Abstract: A vertical axis wind turbine system is revealed. Two vertical axis wind supply units are arranged beside a support rod and between an upper and a lower connection plates. The vertical axis wind supply unit includes blades around a rotor shaft. Each blade includes a blade body and valves. The blade body is a helical plate having a plurality of crossed barriers and insertion holes among barriers. Moreover, the valves are fixed on an upwind surface of the blade body and an upper side of the valve is connected to the blade body. Each valve is corresponding to at least one insertion hole. Each of the two rotor shafts are connected to a generator set by a transmission set. When wind turns the blades, each blade spin the rotor shaft and the transmission set transfers energy generated by the rotating blades to the generator set for conversion to electrical power.

Abstract: A ventilating exhaust fan housing substantially is a two-piece construction formed from a first structural member and a second structural member. The housing has six sides surrounding and defining an interior space of the housing. The six sides include five sides defined by walls of the housing, and a sixth open side acting as a fluid inlet. The first structural member substantially defines the walls of four sides of the housing, and one of the walls of the four sides defines a fluid outlet penetrating therethrough. The second structural member substantially defines the wall of fifth side of the housing. Therefore, the first structural member and the second structural member cooperatively form a compact ventilating exhaust fan housing.

Abstract: A ventilating exhaust fan and outlet fitting assembly includes a ventilating exhaust fan and an outlet fitting. A packing protrusion is interposed between a ventilating exhaust fan and an outlet fitting of the assembly, and thereby the conventional issues of vibration and noise due to an unwanted gap existed between ventilating exhaust fan and the outlet fitting are effectively overcome.