An appliance includes a first gas-burning heating element, a first gas path extending from an inlet to the first heating element, and a first solenoid valve positioned within the first gas path. The appliance further includes a second gas path extending from upstream of the first solenoid valve to the first heating element and supplying a base gas flow to the first heating element. A controller is electronically coupled with the first solenoid valve for controlling a supplemental flow of gas through the first gas path to the first heating element such that the supplemental gas flow combines with the base gas flow to achieve a total gas flow. The controller controls the supplemental flow to adjust the total gas flow by pulsing the first solenoid valve at a first rate corresponding to a desired rate of the total gas flow to the first heating element.

An apparatus may comprise a first carrier tube having a first input end and a first output end and a second carrier tube disposed substantially parallel to the first carrier tube and having a second input end and a second output end. A cross tube may be coupled to the first carrier tube and the second carrier tube and may be disposed substantially perpendicularly between the carrier tubes. A plurality of burner holes may be disposed along the first carrier tube, the second carrier tube, and the cross tube. A plurality of flame sensors may be disposed at various locations of the first carrier tube and the second carrier tube. A first igniter assembly may further be coupled to the first carrier tube.

A fuel supply system for a gas burner assembly is provided. The gas burner assembly includes an inner burner stage positioned concentrically within an outer burner stage. The fuel supply system includes a fuel supply for providing a primary flow of fuel through a primary fuel conduit. A control valve and a modulating valve are operably coupled in series on the primary fuel conduit for regulating the primary flow of fuel. A first fuel supply conduit and a second fuel supply conduit tee off the primary fuel conduit to supply fuel to the outer burner stage and the inner burner stage, respectively. A shutoff valve is operably coupled to the first fuel supply conduit for stopping the flow of fuel through the first fuel supply conduit, e.g., during a simmer operation.

A system for automatically shutting off gas flow to a furnace may include an inlet for supplying a gas to the furnace. The furnace may have a housing. The system may include a thermometer positioned inside between the furnace and the housing. A resettable limit switch may be in electrical communication with the thermometer. An electric shutoff valve may be positioned inline between the inlet and the furnace and in electrical communication with the resettable limit switch. A manual shutoff valve may be positioned inline between the inlet and the electric shutoff valve and may manually shut off gas flow to the furnace. When the thermometer reaches a predetermined temperature, the resettable limit switch may actuate the electric shutoff valve thereby shutting off flow of the gas to the furnace. The electric shutoff valve may only be re-opened by manually resetting the resettable limit switch.

A combustion system includes a perforated flame holder, an oxidant source, and an adjustable fuel nozzle. The oxidant source outputs oxidant. The adjustable fuel nozzle outputs fuel onto the perforated flame holder. The perforated flame holder supports a combustion reaction of the fuel and oxidant within the perforated flame holder. The position of the adjustable nozzle relative to the perforated flame holder can be adjusted to achieve selected characteristics of the combustion reaction within the perforated flame holder.

A fuel supply system for a gas burner assembly is provided. The gas burner assembly includes an inner burner stage positioned concentrically within an outer burner stage. The fuel supply system includes a fuel supply for providing a primary flow of fuel through a primary fuel conduit. A control valve and a modulating valve are operably coupled in series on the primary fuel conduit for regulating the primary flow of fuel. A first fuel supply conduit and a second fuel supply conduit tee off the primary fuel conduit to supply fuel to the outer burner stage and the inner burner stage, respectively. A shutoff valve is operably coupled to the first fuel supply conduit for stopping the flow of fuel through the first fuel supply conduit, e.g., during a simmer operation.

A system and method for vent gas combustion in storage tank for heavy oil production is provided. Auxiliary burners located are provided for combusting the well casing gas. A burner management system for controlling the auxiliary burners is provided which receives a gas pressure value and initiates the auxiliary burners based upon one or more threshold values when the gas pressure exceeds the one or more pressure values. An auxiliary exhaust stack may be collocated with a main exhaust stack of a tank heater for the storage tank.

An apparatus includes a burner, a first conductive element positioned across the face of the burner, a second conductive element positioned within the flame from the burner, and positive and negative electrodes coupled with a power source. The positive electrode and the negative electrode are configured to generate an electric field between the first and second conductive elements affecting the flame, and the electric field is operable to form at least one flame root defined by the flame. The power source is configured to selectively modify the electric field to increase or decrease a quantity of the at least one flame root.

Methods, burner, apparatuses, and systems are provided for controlling a velocity of a jet of gas exiting a burner when the gas is heated or not and at a corresponding second higher temperature or lower first temperature. Through the use of a temperature-sensitive magnetic valve, the flow of a gas can be redirected to maintain velocity of the gas as delivered to a combustion chamber based on the temperature of the gas. The temperature-sensitive magnetic valve can redirect flow of the gas based on the magnetic state of a ferromagnetic material. The state of the temperature-sensitive magnetic valve changes based on the temperature of the gas to maintain the velocity of the gas delivered through an outlet of the burner to the combustion chamber. Thus, heated gases and standard temperature gases can be delivered at approximately equal velocities thus maintaining flame size and shape.

A regulation device for regulating a mixing ratio (x) of a gas mixture comprises a first conduit (1) for carrying a flow of a first gas (e.g., air) and a second conduit (2) for carrying a flow of a second gas (e.g., a fuel gas). The first and second conduits (1, 2) open out into a common conduit (3) in a mixing region (M) to form the gas mixture. A first sensor (S1) is configured to determine at least one thermal parameter of the gas mixture downstream from the mixing region. A control device (10) is configured to receive, from the first sensor, sensor signals indicative of the at least one thermal parameter of the gas mixture and to derive control signals for adjusting device (V1) acting to adjust the mixing ratio, based on the at least one thermal parameter.