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US 2003/0157882 A1Published application
Electronically regulated self-controlled ventilation unit
AssigneeAldes Aeraulique
InventorsXavier Boulanger, Patrick Damizet
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AssigneeAldes Aeraulique
InventorsXavier Boulanger, Patrick Damizet
Estimating the term…
The invention concerns a ventilation unit comprising an electrically driven ventilator (3), mounted inside a plenum chamber (2) wherein emerge several ducts (7) connected to one or several rooms. Said unit further comprises orifices with specific cross-section (21, 22, 23), and a differential pressure sensor (9) measuring the difference in pressure between two predetermined points, said value being transmitted to an analyzing and control device (10), which compares the differential pressure value to a reference value and controls the ventilator (3), such that it accelerates or slows down it rotational speed, so as to maintain the differential pressure constant and equal to the reference value, to maintain the desired flow rate at said orifices.
An electronically regulated self-controlled ventilation unit operating in extraction or blowing, comprising a fan (3) driven electrically, mounted inside a casing (2) into which there open several ducts (7) connected with one or more rooms, characterized in that it comprises orifices of determined cross section (8, 21, 22, 23) and a differential-pressure sensor (9) measuring the pressure difference between two predetermined points, this value being transmitted to an analysis and control device (10) which compares the differential-pressure value with a reference value and controls the fan (3) in such a way that it speeds up or slows down its rotational speed, so as to keep the differential-pressure value constant and equal to the reference value, so as to maintain the desired flow rate at the aforementioned orifices.
Dependencies are inferred from the claim text.