Gas flow rate control regulator valve

Patent · Tue Apr 29 00:00:00 EDT 1986

OSTI ID:5779868

Belknap, J L

An improved gas flow rate control regulator valve is described for a gas burning furnace for maintaining an optimum precombustion air to gas mass ratio over a wide range of air and gas flows within the combustion chamber of the furnace for efficient burning therewithin. The regulator valve consists of: a valve housing having a gas influent chamber; a gas effluent chamber disposed for operative connection to the gas influent chamber and connected to the combustion chamber of the furnace; a null point means chamber disposed generally above the top control piston chamber; a valve orifice; a valve plug movably disposed generally in spaced relationship to the valve orifice to open a variable transverse cross-sectional area of the valve orifice to flow of the gas influent stream therethrough at a variable flow rate proportional to the amount of transverse cross-sectional area of the valve orifice exposed by the movably disposed valve plug; a valve stem connected to and supporting the valve plug; a piston disposed in each piston chamber, the piston connected to and supported by the valve stem; the flexible diaphragm articulating with a corresponding piston and sealingly disposed within each piston chamber to define therein a lower subchamber and an upper subchamber, whereby an increase in the pressure of the fluid in each upper subchamber tends to urge the valve plug downwardly to increase the open area of the valve orifice, to increase the flow of gas therethrough, and hence to increase the pressure of the effluent gas flowing through the valve and to the combustion chamber; a null point means for equalizing and balancing against the downward force of gravity, the null point means disposed within the null point means chamber above the top control piston chamber; and a balancing piston connected to and disposed in spaced relationship from the under surface of the valve plug.

• Assignee: Maxon Corp., Muncie, IN
• Patent Number(s): US 4585021
• OSTI ID: 5779868
• Resource Relation: Patent File Date: Filed date 13 Feb 1984
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
42 ENGINEERING
GAS FURNACES
VALVES
NATURAL GAS
COMBUSTION
FLOW RATE
CLOSURES
COMBUSTION CHAMBERS
FUEL-AIR RATIO
GAS FLOW
GRAVITATION
ORIFICES
PISTONS
PRESSURE EFFECTS
SEALS
CHEMICAL REACTIONS
CONTROL EQUIPMENT
ENERGY SOURCES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
FURNACES
GAS FUELS
GASES
OPENINGS
OXIDATION
THERMOCHEMICAL PROCESSES
034000* - Natural Gas- Combustion
421000 - Engineering- Combustion Systems