VORTEX BLOWER, IMPELLER USED FOR THE SAME AND METHOD FOR MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To improve productivity of a vortex blower by making an impeller easily form as an integral unit. SOLUTION: A three dimensional blade of an impeller is provided under a condition where gap between a plurality of blades become penetrating space along a rotation shaft direction. A fixed cover part is provided with facing a side surface of a casing part of the impeller. The cover part covers the space and part in an opposite side to stationary flow passage and flow passage of fluid is formed together with the blade. COPYRIGHT: (C)2006,JPO&NCIPI