中心部にターボ型リブを有する高効率・軽量プロペラファンの開発

抄録

A propeller fan in the outdoor unit of air conditioner is a key component in order to ventilate the heat exchanger of the heat pump. From a viewpoint of energy conservation, it is important to increase the blowing efficiency of the propeller fan. Moreover, it is necessary to reduce its weight from a viewpoint of resource saving. Therefore, turbo-machinery ribs are put along its continuous surface of enlarged blades by removing the center boss. As a results, it makes possible to reduce the weight while avoiding the stress on the leading edge of the wing, and develop the highly efficient propeller fan by using suction effect to inner side.