| 摘要 |
PROBLEM TO BE SOLVED: To increase an efficiency for collecting an oil content in the air while securing a sufficient air flow to reduce the oil content adhering to an impeller, thereby improving maintainability.SOLUTION: The blower fan 30 includes: the impeller 32 having multiple blades 31; a power transmission member 35 for transmitting turning force to the impeller; and a filter 33 mounted to the impeller, the power transmission member or a revolving shaft 36 of an electric motor generating the turning force and having a hole 34 through which an air flow generated by the revolution of the impeller passes.SELECTED DRAWING: Figure 10 |
