Ventilation – Having inlet airway – With adjustable valve
Patent
1996-04-04
1998-03-24
Joyce, Harold
Ventilation
Having inlet airway
With adjustable valve
454238, 7386166, 137 12, 137557, F24F 700
Patent
active
057306524
ABSTRACT:
An adjustable damper for controlling air flow from one area to another includes a rectangular frame forming an opening with a number of movable vanes positioned to selectively close off or open up the opening. Positioned between each pair of vanes in the frame is a stationary pitot-static sensing vane. Each pitot-static sensing vane can also be shaped as an air foil and includes an upstream chamber connected to a ram air input aperture and a downstream chamber connected to a downstream static aperture. Each of the chambers is connected to one portion of a pressure sensing instrument, such as, for example, a diaphragm type differential pressure sensor, in order to sense air flow velocity across the damper.
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Boles Derek S.
Joyce Harold
Tomkins Industries Inc.
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