| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that a smooth airflow is hindered due to the effect of turbulence generated by the collision of each air passing through an upper stage flow path and a lower stage flow path of a diffuser at a diffuser outlet and the blowing performance as an electric blower is deteriorated, in the electric blower having the diffuser of a two-stage structure. <P>SOLUTION: The collision between air flowing through an upper stage flow path and air flowing through a lower stage flow path of a diffuser 8 is prevented by an annular wall 12 provided continues to a circular annular plate 8c separating a flow straightening channel of the diffuser 8 into the upper and lower stage flow paths and covering the lower stage flow path of the diffuser 8. Accordingly, the deterioration in blowing performance as the electric blower is prevented. <P>COPYRIGHT: (C)2013,JPO&INPIT |
