Fluidic flow sensing and control apparatus
AssigneeHoneywell Inc.
InventorRichard C. Mott
Life of this patent
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Abstract
In a system to control a condition of air in a duct, there is disclosed a first nozzle for issuing a jet of fluid, a second nozzle for receiving a portion of said fluid depending upon the condition of the air in the duct, and a circuit arrangement for controlling a damper in the duct dependent upon the amount of fluid received by the second nozzle.
Claims29
A variable volume system for controlling the position of a damper to regulate a condition of air in a duct, said system comprising:
- air velocity sensor means comprising first nozzle means and second nozzle means for directly measuring the velocity of air moving past said first and second nozzle means, said first and second nozzle means adapted to be arranged for sensing said condition of said air in said duct by passing at least a portion of said air past said first and second nozzle means, said first nozzle means arranged to issue a jet of fluid and said second nozzle means arranged for receiving a portion of said fluid dependent upon said condition of said air;
- fluid supply terminal means;
- first connecting means connecting said terminal means to said first nozzle means;
- damper actuator means adapted to control the position of said damper;
- and,
- second connecting means connecting said second nozzle means to said damper actuator means for varying the position of said damper dependent upon said condition of said air and dependent upon the velocity of said jet of fluid.
A variable volume system for controlling the position of a damper to regulate a condition of air in a duct, said system comprising:
- air velocity sensor means comprising first nozzle means and second nozzle means for directly measuring the velocity of air moving past said first and second nozzle means, said first and second nozzle means arranged for sensing said condition of said air in said duct by passing at least a portion of said air past said first and second nozzle means, said first nozzle means arranged to issue a jet of fluid and said second nozzle means arranged for receiving a portion of said fluid dependent upon said condition;
- fluid supply terminal means;
- first connecting means connecting said terminal means to said first nozzle means;
- damper actuator means for controlling the position of said damper;
- and,
- second connecting means connecting said second nozzle means to said damper actuator means for varying the position of said damper dependent upon said condition of said air and dependent upon the velocity of said jet of fluid.
A variable volume system for controlling the position of a damper to regulate a condition of air in a duct, said system comprising:
- air velocity sensor means consisting of a first nozzle and a second nozzle for directly measuring the velocity of air moving past said first and second nozzles, said first and second nozzles adapted to be arranged non-axially to said air moving past said first and second nozzles for sensing said condition of said air in said duct by passing at least a portion of said air in said duct past said first and second nozzles, said first nozzle arranged to issue a jet of fluid and said second nozzle arranged for receiving a portion of said fluid dependent upon said condition of said air;
- fluid supply terminal means;
- first connecting means connecting said terminal means to said first nozzle;
- damper actuator means adapted to control the position of said damper;
- and,
- second connecting means connecting said second nozzle to said damper actuator means for varying the position of said damper dependent upon said condition of said air and dependent upon the velocity of said jet of fluid.
Dependencies are inferred from the claim text.