| 摘要 |
PROBLEM TO BE SOLVED: To solve such problems that an efficiency in a cross flow type fan is low, a space for suction is required in the case where an air-feeding is used for an air curtain due to an axial flow in a propeller fan type fan and an efficiency decrease and a noise problem are generated in the case where a compact fan is desired. SOLUTION: An air passage forming means provided on a periphery of a propeller fan, conducting an air-feeding to an axial direction and conducting the air-feeding from an end of the propeller fan to an outer periphery direction is provided. A thin plate-like air passage member blowing out the air-feeding in the outer periphery direction from one end, provided so as to be opposed to the propeller fan at a predetermined space in an axial direction of the propeller fan and conducting the air-feeding to the outer periphery direction between it and a side wall is provided. Since a widthwise size is made to the same degree or a smaller degree than an outer diameter size of a blade of the propeller fan, a fan with high reliability capable of ensuring a direction and an air speed of blowing air and feeding an air to a far place is obtained and the fan can be made to a compact size without largely influencing to an air-feeding property. |
