When the electromagnetic load of the domestic motor is the same as the electromagnetic load of the prototype motor, the noise values ​​of the two motors are basically similar.
Because the motor speed is slightly higher than the prototype motor speed and the mechanical vibration noise is increased; while the power factor and efficiency of the domestic motor have approached or exceeded the power factor and efficiency of the prototype motor, the rated speed of the motor is determined by the above method. And the rated output power, and then the motor design is completely feasible.
There are many reasons for the noise generated by the air conditioner, including compressor noise, electromagnetic noise and mechanical noise generated by the fan motor, airflow noise generated by the fan motor, vibration of the motor and compressor, and vibration of the air conditioner.
The main noise that can be controlled when designing an air conditioner is the motor and airflow. Since the designed fan motor speed is increased more than the prototype motor speed, the mechanical noise and airflow noise of the air conditioner are increased. If the support of the motor is changed to elastic coupling, that is, the rubber washer is fixed at both ends of the fan motor to fix the motor, this method mitigates the vibration, thereby reducing the mechanical noise of the air conditioner; and the motor speed can be appropriately reduced to reduce the motor Noise and airflow noise.
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