Orion reversible flow fans feature directional flow and speed control in one unit
Summary
Previously, two fans were required if the designer wanted to achieve two directions of airflow. Orion Fans’ Reversible Flow Fans are a specialty design that enables some uses: • Outdoor applications where the device intakes air in one direction, but a periodic reverse flow ensures air pathways do not become clogged with environmental debris • Equipment where seasonal environmental changes require different airflow of intaking versus exhausting air • Situations where a “confidence check” is needed to confirm the proper operation of airflow monitoring sensors • Applications where dynamic control of airflow pathways is needed, and large airflow check valves may be difficult or impossible to integrate • HVAC applications where occasional intake of environmental air is required to comply with building codes “By utilising the newest microcontroller-based designs in the reversible flow fans, we provide engineers the advantage of both directional flow and speed control in a single fan, a feature that we have been receiving more and more requests for,” said David Luna, VP of Marketing for Orion Fans. In typical fan speed control, PWM control provides a fixed-frequency AC square wave signal to the fan, and the duty cycle of the waveform is altered to match the desired speed. In most cases, a simple firmware or software change in the customer’s equipment facilitates direction control with minimal disruption of industry standard control assumptions. Established in 1995, Orion Fans has engineering and manufacturing facilities in the United States, Europe, and Asia.