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Orion Reversible Flow Fans Feature Directional Flow and Speed Control in One Unit
NYE now Supplying Microcontroller-based Designs that Provide Directional Flow and Speed Control in a Single Fan
Previously, two fans were required if the designer wanted to achieve two directions of airflow. This arrangement added cost to the bill of materials, required more area in the design to accommodate both fans, increased maintenance requirements, and lowered product reliability.
Orion Fans' Reversible Flow Fans are a specialty design that enables some unique uses:
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. Reversible fans extend this control paradigm by segmenting the PWM duty cycle curve into "Forward" versus "Reverse" regions. This segmentation still allows for speed control over a condensed duty cycle range, while enabling control of the direction of flow without requiring additional control wires or circuitry. 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.
The reversible flow fans are currently available in 120mm and 172mm packages, in 12V, 24V, 48V and 60V versions.
New Yorker Electronics
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