Traditionally, AC motor is usually used as fan impeller driving device that have many advantages of EC technology are becoming more and more difficult to ignore. Over KW three-phase AC asynchronous motor has satisfactory efficiency in full loading operation, but the efficiency of single-phase or less than KW three-phase motor cannot meet the requirements. AC motors also need to use frequency converters to control speed, which will cause power loss, and additional filtering is required to protect sensitive motor bearings. Using frequency converter to drive asynchronous motor with partial load often produces noise, which makes the motor hum.
Ventilation fan driven by an electric motor rotates the air blades to drive the airflow, so that indoor and outdoor air exchange of a class of air conditioning appliances. Also known as ventilation fan. The purpose of the internal ventilation fan is to remove the indoor dirty air, adjust the temperature, humidity and achieve the effect of air circulation. Ventilair fan is widely used in homes and public places.
There are three main customer demands for fans in the field of ventilation: Energy efficiency, adaptive self-regulation control ability according to load changes, and flexibility to meet the variety of application needs of customers.
PBM as an industry leader in air purification fan fans and motors, offers a complete range of axial flow fans and motors for ventilation.