System and process for controlling the flow of air and fuel to a burner

Patent · Tue Feb 24 04:00:00 EST 1987

OSTI ID:6727222

West, J S

This patent describes a flow controller system capable of controlling the flow of air and fuel to a burner in a plurality of operating modes throughout the firing range of the burner. The air and fuel are conducted to the burner by separate conduits fluidly connected to the burner. The system comprises: (a) an air flow indicating means including a differential pressure sensing means fluidly connected across the air conduit and the burner for sensing the pressure drop of the air flow across the burner and generating a signal indicative of the rate of air flow into the burner; (b) first and second valves for modulating the flow of air and fuel, respectively, to the burner which are fluidly connected upstream of the air flow indicating means; (c) a fuel flow indicating means for generating a signal indicative of the rate of fuel flow into the burner, and (d) a control means operatively and separately connected to both the first and second valves and the fuel and air flow indicating means for maintaining selected air and fuel flow rates throughout the firing range of the burner by comparison with precalibrated air and fuel flow ratios. The control means is adjustable at all points throughout the firing range of the burner.

• Assignee: Control Technologies, Inc., Harrisburg, PA
• Patent Number(s): US 4645450
• OSTI ID: 6727222
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800 -- Combustion
Pyrolysis
& High-Temperature Chemistry
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
AIR FLOW
BURNERS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION CONTROL
CONTROL
CONTROL EQUIPMENT
DUCTS
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUEL SYSTEMS
FUEL-AIR RATIO
FUELS
GAS FLOW
MEASURING INSTRUMENTS
OXIDATION
PRESSURE DROP
PRESSURE GAGES
SIGNALS
THERMOCHEMICAL PROCESSES
VALVES