ROTATION DIRECTION CONTROL METHOD FOR A COOLING FAN AND ROTATION DIRECTION CONTROL CIRCUIT THEREOF
First Claim
1. A rotation direction control method of a cooling fan, comprising:
- a detection step receiving a temperature control signal from a temperature detection unit by a rotation direction control unit when a predetermined dust-expelling time period begins;
a determination step determining whether a detected temperature is higher than a predetermined value based on the temperature control signal by the rotation direction control unit; and
a driving step controlling the rotation direction control unit to keep outputting a cooling signal to drive a motor of the cooling fan for a cooling operation when the determination of the determination step is positive.
2 Assignments
0 Petitions
Accused Products
Abstract
A rotation direction control method of a cooling fan is disclosed. The rotation direction control method includes a detection step, a determination step and a driving step. The detection step receives a temperature control signal from a temperature detection unit by a rotation direction control unit when a predetermined dust-expelling time period begins. The determination step determines whether a detected temperature is higher than a predetermined value based on the temperature control signal by the rotation direction control unit. The driving step controls the rotation direction control unit to keep outputting a cooling signal so as to drive a motor of the cooling fan for a cooling operation when the determination of the determination step is positive.
18 Citations
8 Claims
-
1. A rotation direction control method of a cooling fan, comprising:
-
a detection step receiving a temperature control signal from a temperature detection unit by a rotation direction control unit when a predetermined dust-expelling time period begins; a determination step determining whether a detected temperature is higher than a predetermined value based on the temperature control signal by the rotation direction control unit; and a driving step controlling the rotation direction control unit to keep outputting a cooling signal to drive a motor of the cooling fan for a cooling operation when the determination of the determination step is positive. - View Dependent Claims (2, 3)
-
-
4. A rotation direction control circuit of a cooling fan, comprising:
-
a driving unit electrically coupled to a motor of the cooling fan; a temperature detection unit generating a temperature control signal according to a detected temperature thereof; and a rotation direction control unit electrically coupled to the driving unit and the temperature detection unit, receiving the temperature control signal of the temperature detection unit, and outputting a cooling signal to the driving unit for a cooling operation or outputting a dust-expelling signal to the driving unit for a dust exhaustion operation, wherein the rotation direction control unit outputs the cooling signal when the detected temperature is higher than a predetermined value. - View Dependent Claims (5, 6, 7, 8)
-
Specification