| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner which lowers a flow rate at a turning point from a diffuser to a return, reduces a turning loss by smoothly turning a flow to improve the efficiency of an electric blower, and improves a suction rate, that is, an output since the efficiency of the electric blower using the blower is improved. <P>SOLUTION: In the vacuum cleaner which includes: a partition plate; a plurality of return guide vanes provided on one surface of the partition plate; a plurality of diffuser vanes provided on the other surface of the partition plate; and an electric motor, a recess is formed on the other surface of the partition plate to keep a flow channel provided by adjacent diffusers among the plurality of diffuser vanes and the partition plate, and the recess is formed to reach from the inside of the flow channel to the outer circumferential end of the partition plate. <P>COPYRIGHT: (C)2013,JPO&INPIT |
