Control for fogger using pressurized air and water
AssigneeCool Fog Systems, Inc.
InventorsRobert S. Karnoff, Brian J. Early, Albert R. Thierfelder
Life of this patent
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Abstract
A system for regulating the amount of fog produced by foggers in a humidification system in which a control signal calling for a certain amount of humidification from foggers is used and wherein the foggers require pressurized air and water to produce fog for an air stream. The pressure differential between the air and water to the foggers is varied according to the amount of required humidification. The pressure differential may be regulated with a pneumatic device or with an electronic control.
Claims6
In a control system for humidifying an airstream wherein foggers are used that need a supply of pressurized air and water kept at a predetermined pressure difference, and wherein a call signal represents a desired amount of fog to be produced by the foggers to humidify the air stream, and wherein a feedback signal is produced indicative of the pressure of the air at the foggers, the improvement comprising
- a device responsive to a call signal indicative of the desired fog output to produce a first control signal representative of a desired difference between the air and water pressures as a function of the call signal level;
- a combining circuit responsive to the first control signal and the feedback signal to produce a signal indicative of a desired pressure difference between the air and water pressures as a function of the call signal level.
A control system for humidifying an airstream wherein foggers are used that need a supply of pressurized air and water kept at a predetermined pressure difference, and wherein a call signal represents a desired amount of fog to be produced by the foggers to humidify the air stream, and wherein a feedback signal is produced indicative of the pressure of the air at the foggers, comprising:
- means responsive to a call signal indicative of the desired fog output for producing a first control signal representative of a desired difference between the air and water pressures as a function of the call signal level;
- means for combining the first control signal and the feedback signal for producing a pressure difference signal indicative of a desired produce the air and water pressures as a function of the call signal level;
- and
- means responsive to said pressure difference signal for regulating the water pressure applied to said foggers to said desired pressure difference below the air pressure to said foggers.
Dependencies are inferred from the claim text.