公开(公告)号：US20150152876A1

公开(公告)日：2015-06-04

申请号：US14290496

申请日：2014-05-29

Applicant: DELTA ELECTRONICS, INC.

Inventor： Jung-Yuan CHEN ,  Yen-Hung CHEN ,  Ching-Sen HSIEH ,  Yueh-Hsin LIU ,  Chen-Chien KAO ,  Shih-Yuan CHIANG ,  Jian-Cun LIN

IPC: F04D27/00 ,  F04D25/06

CPC classification number: F04D27/008 ,  F04D25/06 ,  F04D27/001 ,  F04D27/004

Abstract: An anti-air-return fan system includes a motor, a driving control circuit, and a rotation judgment circuit. The driving control circuit is electrically connected to the motor. The driving control circuit has a driving signal for driving the motor to rotate according to the driving signal. The rotation judgment circuit outputs a judgment signal to the driving control circuit when detecting that the motor reversely rotate. The driving control circuit executes a braking according to the judgment signal. The driving control circuit drives the motor to operate when the rotation judgment circuit detects that the motor doesn't rotate reversely.

Abstract translation: 防回风风扇系统包括电动机，驱动控制电路和旋转判断电路。 驱动控制电路电连接到电动机。 驱动控制电路具有用于驱动电机根据驱动信号旋转的驱动信号。 当检测到电动机反向旋转时，旋转判断电路向驱动控制电路输出判断信号。 驱动控制电路根据判断信号进行制动。 当旋转判断电路检测到电动机不反向旋转时，驱动控制电路驱动电动机进行动作。