Today, AC and DC fans have more demands placed on them than simply cooling and controlling airflow in white good applications. From refrigeration and freezer units to convection ovens and stove range venting ducts, white good manufacturers require high-performance, energy-efficient fans and fan trays that feature speed control, remote monitoring, low noise levels and wider operating temperature ranges- all while reducing purchase and assembly costs. AC fans, DC fans and blowers are now available with features that address the demands of low noise, low power, increased functionality and high reliability. Designs utilizing fans with "smart" controls optimize the fan performance, while also minimizing energy consumption. Smart thermal controls can reduce power consumption by as much 30%, while reduc- ing noise levels, as the fans only operate at full speed when needed. Smart fan control options can also include tachometer output, airflow monitors (as an added accessory), locked rotor alarm, pulse width modulation (PWM) input, and constant speed controls. These intelligent control options allow the end users to better monitor their product operating temperatures and the fan's airflow, while ensuring the fans are operating properly and at optimal conditions.
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