Fan and controlling device thereof

Details Fan and controlling device thereof Fan and controlling device thereof

2009-05-08

2011-10-11

Dougherty, Thomas (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C310S040500

Reexamination Certificate

active

08035326

ABSTRACT:
A fan is electrically connected with an alternating current power source. The fan includes an impeller, a motor and a controlling device. The controlling device includes a commutating unit, a magnetic detecting unit, a first switching unit, a second switching unit, a third switching unit and a controlling unit. The alternating current power source is electrically connected with the first switching unit, the second switching unit and the commutating unit, respectively. The commutating unit is electrically connected with the magnetic detecting unit and the controlling unit, respectively. The controlling unit is electrically connected with the third switching unit and the first switching unit, respectively. The third switching unit is electrically connected with the second switching unit. The first switching unit and the second switching unit are electrically connected with the motor, respectively. A controlling device of the fan is also disclosed.

REFERENCES:
patent: 2009/0218981 (2009-09-01), Heckenbach

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