| 摘要 |
PROBLEM TO BE SOLVED: To provide a control method for a blower capable of being quickly switched to respective air blowing quantities set in a multistage shape. SOLUTION: When operating the blower 4 by the each air blowing volume set in a multistage shape, the air blowing volume is adjusted by adjusting a rotating speed so that the respective air blowing volume maintains a prescribed value, the rotating speed at this time is stored, and when switching the air blowing volume, an air blowing volume after switching is adjusted with the rotating speed at the last time same air blowing volume as a reference.
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