IMPELLER AND BLOWER INCLUDING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an impeller for a blower suitable for blowing high-temperature gas without generating vibration even when blowing the high-temperature gas, and to provide the blower.

SOLUTION: An impeller includes: a cylindrical rotary shaft 11; a boss 12 attached to the rotary shaft 11; and a plurality of vanes 13 fixed to the boss 12 and radially extending at an outer periphery of the boss 12. The boss 12 is fixed by three or more keys 15 equally distributed in a circumferential direction between the boss 12 and the rotary shaft 11. Accordingly, the vibration due to a gap generated between the rotary shaft 11 and the boss 12 caused by a temperature difference between the rotary shaft 11 and the boss 12 is prevented when blowing the gas ranging from a room temperature to a high temperature of several hundred degrees.

COPYRIGHT: (C)2013,JPO&INPIT