CPC F24F 11/77 (2018.01) [F24F 1/0018 (2013.01); F24F 11/74 (2018.01); F24F 2110/10 (2018.01)] | 20 Claims |
1. A blower comprising:
a motor with variable rotational speed, having a shaft that is supported by a bearing with a lubricant sealed inside; and
a first controller that rotationally drives the motor,
wherein
the first controller executes a first control to decrease the rotational speed of the motor when a first temperature (T1) decreases during operation in which the motor is rotated in a predetermined low rotational speed range, the first temperature (T1) being a measured or calculated temperature of the bearing.
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