Abstract: Disclosed is a tilt-type rotation blade apparatus for vertical-type power generation. When a blade member is rotated in a backward direction to a wind direction, the blade member is tilted so that the blade plate is horizontal to the wind direction, thereby applying only the forward rotational force to the vertical power shaft, so that the wind power generation efficiency is maximized. A tilt structure is improved to smoothly perform a tilt operation and the structure of the blade member is improved so that the blade member is rotated in a vertical direction to the ground surface, thereby efficiently generating wind power without the limitation of an installation space.

Abstract: Disclosed is a tilt-type rotation blade apparatus for vertical-type power generation. When a blade member is rotated in a backward direction to a wind direction, the blade member is tilted so that the blade plate is horizontal to the wind direction, thereby applying only the forward rotational force to the vertical power shaft, so that the wind power generation efficiency is maximized. A tilt structure is improved to smoothly perform a tilt operation and the structure of the blade member is improved so that the blade member is rotated in a vertical direction to the ground surface, thereby efficiently generating wind power without the limitation of an installation space.

Abstract: An automatic circulation device of warm water includes a boiler respectively formed with a feed port and a discharging port at the upper side and the lower side thereof, an electric heater horizontally installed at the inner lower side of the boiler without contacting the inner lower side and supplying heat to the interior of the boiler, a water tank connected to the feed port of the boiler by means of a feed pipe and feeding the cool water to the boiler, a heat exchanging section connected to the discharging port of the boiler by means of a discharging pipe and to the water tank by means of a circulation pipe, and transferring heat to the exterior, and a feed valve and a discharging valve respectively installed to the feed pipe and the discharging pipe, and automatically opened and closed by vapor pressure in the boiler. The automatic circulation device continuously produces and circulates the warm water regardless of the distance and height without using a separate pump.

Abstract: The present invention relates to gas controlling and blocking valves and An automatic warm water circulator using the same, and includes a circulation cycle formed such that a reservoir is connected to a boiler by a supply pipe, the boiler is connected to a heat exchanger by a discharge pipe, and the reservoir is connected to the heat exchanger by a circulation pipe, a hollow combustion chamber provided in the lower side of the boiler and having both sides protruded toward the outside of the boiler, a gas supply and ignition device for supplying the gas to the inside of the combustion chamber and for burning the gas to heat water in the boiler, and a supply valve and discharge valve respectively provided in the supply pipe and the discharge pipe and automatically opened and closed in response to the inner pressure for the boiler.

Abstract: An automatic circulation device of warm water includes a boiler respectively formed with a feed port and a discharging port at the upper side and the lower side thereof, an electric heater horizontally installed at the inner lower side of the boiler without contacting the inner lower side and supplying heat to the interior of the boiler, a water tank connected to the feed port of the boiler by means of a feed pipe and feeding the cool water to the boiler, a heat exchanging section connected to the discharging port of the boiler by means of a discharging pipe and to the water tank by means of a circulation pipe, and transferring heat to the exterior, and a feed valve and a discharging valve respectively installed to the feed pipe and the discharging pipe, and automatically opened and closed by vapor pressure in the boiler. The automatic circulation device continuously produces and circulates the warm water regardless of the distance and height without using a separate pump.