Brushless dc motor fan controlled either remotely or by conducting wire

Abstract

A fan is provided with a brushless DC motor; a controller assembly mounted in the brushless DC motor and electrically connected to the motor; a control electrically connected to the controller assembly; and a remote control. The controller assembly includes a filter, a full-wave rectifier electrically connected to the filter for converting AC into DC, a motor controller electrically interconnected the full-wave rectifier and the brushless DC motor, a wire control module electrically connected the control, a microprocessor electrically connected to the wire control module, a control IC electrically interconnected the motor controller and the microprocessor, and a remote control module electrically connected to the control. The fan can be controlled either remotely or by conducting wire.

What is claimed is: 
     
         1 . A mechanical fan comprising:
 a brushless DC motor;   a controller assembly mounted in the brushless DC motor and electrically connected to the motor;   a control electrically connected to the controller assembly; and   a remote control;   wherein the controller assembly comprises a filter, a full-wave rectifier electrically connected to the filter for converting AC into DC, a motor controller electrically interconnected the full-wave rectifier and the brushless DC motor, a wire control module electrically connected the control, a microprocessor electrically connected to the wire control module, a control IC electrically interconnected the motor controller and the microprocessor, and a remote control module electrically connected to the control; and   wherein in response to an operation of either (i) the control a first signal is generated, the first signal is sent to the wire control module which in turn sends the first signal to the microprocessor for processing, or (ii) the remote control an RF signal is transmitted from the remote control to the remote control module, the remote control module sends the RF signal to the control which in turn sends the RF signal to the wire control module, the wire control module sends the RF signal to the microprocessor for processing so that the microprocessor creates a second signal and sends the second signal to the control IC which in turn processes the second signal to send an instruction to the motor controller, and the motor controller activates or deactivates the brushless DC motor.