SYSTEM AND METHOD FOR DUCTED VENTILATION
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United States of America Patent
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May 27, 2021
app pub date -
Feb 22, 2018
filing date -
Feb 23, 2017
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Abstract
In an aspect, there is disclosed a system for providing ventilation to a ventilated location within a passageway. The system includes: a duct arranged to extend between an inlet location to an outlet location proximate the ventilated location; an axial fan fitted with the duct having an impellor adapted move air between the inlet location and the outlet location a controllable vane located within the duct relatively upstream of the impellor; a sensor located relatively downstream of the impellor adapted to provide a measurement indicative of a volumetric flow rate discharged from the outlet location; and a controller in operative communication with the sensor and the vane, the controller being configurable to determine the volumetric flow rate and control the vane so as to maintain the volumetric flow rate above a pre-determined minimum volumetric flow rate. Other examples of the system and associated methods are also disclosed.
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