The invention relates to a flame control device for managing the operation of a gas burner apparatus, comprising: an input prepared to receive a supply signal, an output intended to be connected to said gas burner apparatus, a control unit connected to said input to be supplied by the supply signal and to said output to control the operation of said burner by means of at least one output signal, a load configured to be controlled by the control unit so as to absorb power in a varying manner over time when said input is supplied by the supply signal.

According to one embodiment a valve arrangement for a gas burner is provided that includes a manual gas valve with a manual actuator for opening or closing the gas flow, and an electromagnetic valve having a movable closure member which allows opening or closing a gas passage to the burner. The electromagnetic valve is arranged in the gas valve, with the manual actuator being coupled to a rotary flow regulating element, the manual actuator being configured in order to move the closure member of the electromagnetic valve, opening the gas passage, the manual gas valve including a reduced gas flow channel which puts the inlet conduit in fluid communication with the regulating element regardless of the position of the closure member.

A thermoelectric safety assembly that includes a thermocouple configured to detect a flame in a burner and, in response to detecting the flame, generating an electrical voltage. The assembly includes an electromagnetic valve electrically connected to the thermocouple, and a transistor electrically connected between the thermocouple and the electromagnetic valve. The electromagnetic valve is arranged electrically connected with a field-effect transistor. The assembly also includes a voltage booster configured to power the transistor, the transistor being connected in parallel with the voltage booster. An output terminal of the voltage booster is arranged connected with a gate terminal of the transistor, the voltage booster being configured to boost the electrical voltage generated in the thermocouple, an electrical voltage being obtained that is capable of keeping the transistor closed such that the electromagnetic valve is energized.

A cooking appliance and method utilize a rotary burner control with a rotary control actuator, a position sensor, and an electronic burner control user interface to control an electromechanical valve unit that regulates gas flow to a gas burner.

Provided is a flowback system and method. The flowback system, in one aspect, include a tank, a transfer pump, a low-pressure vent line coupled between a vent of the tank and a first flare tip, and a high-pressure gaseous hydrocarbon line coupled to a second flare tip. In accordance with yet one other aspect, the flowback system includes a control system including a sensor, a valve and a valve controller coupled to the valve, the valve of the control system coupled between the low-pressure vent line and the high-pressure gaseous hydrocarbon line, the control system configured to sense an unsafe system event and actuate the valve to supply high-pressure gaseous hydrocarbons from the high-pressure gaseous hydrocarbon line to the low-pressure vent line.

A combustible gas heating apparatus includes: a main burner arranged in a combustion chamber of the apparatus, a pilot burner for generating a pilot flame for igniting it, a valve group comprising a main valve arranged on a main duct, and a pilot valve arranged thereon, upstream of the main valve, for supplying gas to the pilot burner, a system for controlling gas to the main and pilot burners, including an electronic control unit operatively associated with the main and pilot valves, a thermal safety device actuable in the presence of inflammable vapors near the apparatus, to safely extinguish the main burner when a predetermined temperature threshold has been exceeded, the pilot burner configured as a continuous pilot burner having a permanent flame, the pilot and main valves being electrically-operated valves, an auxiliary buffer battery configured to power the electronic control.

According to one embodiment a valve arrangement for a gas burner is provided that includes a manual gas valve with a manual actuator for opening or closing the gas flow, and an electromagnetic valve having a movable closure member which allows opening or closing a gas passage to the burner. The electromagnetic valve is arranged in the gas valve, with the manual actuator being coupled to a rotary flow regulating element, the manual actuator being configured in order to move the closure member of the electromagnetic valve, opening the gas passage, the manual gas valve including a reduced gas flow channel which puts the inlet conduit in fluid communication with the regulating element regardless of the position of the closure member.

Magnet-thermocouple for the fail-safe safety supply of gas to burners or the like, in particular of fail-safe safety control for domestic cooking devices, comprises: at least one gas burner, which gas burner is connected to a gas supply source by flame-regulating means and by means of a safety valve driven by a flame presence sensor consisting of a thermocouple, said safety valve having an open condition, wherein said supply source supplied said burner, and a closed condition, wherein the gas passage is interrupted and wherein the thermocouple, in the presence of a flame, generates an electrical signal constituting the drive signal for the passage of said safety valve from an open condition to a closed condition, and vice-versa, of said safety valve, whereas a further drive signal generator and power supply of said safety valve is provided, for the temporary and alternative supply of the safety valve during the flame ignition step heating the thermocouple, to the temperature generating the drive signal. According to the invention, the signal generator and power supply comprise power limiters to limit the signal generated and an automatic deactivating unit whenever the power supply is overloaded for a predefined amount of time, the power necessary for the drive signal of the safety valve being greater than the one determined by the limiters.

A cooking appliance and method utilize a rotary burner control with a rotary control actuator, a position sensor, and an electronic burner control user interface to control an electromechanical valve unit that regulates gas flow to a gas burner.

The present disclosure relates to a gas supply system for a flame module of a spectrometer and a method of controlling a flame module. The gas supply system comprises an oxidant gas supply line for providing a supply of oxidant gas, an oxidant gas flow valve for varying a gas flow rate of an oxidant gas in the oxidant gas supply line, an oxidant gas safety controller configured to control the oxidant gas flow valve, a fuel gas supply line for providing a supply of fuel gas, a fuel gas flow valve configured to control a gas flow rate of a fuel gas on the fuel gas supply line, and a fuel gas safety controller configured to control the fuel gas flow valve. During normal operation, the oxidant gas safety controller is configured to charge an energy storage circuit of the oxidant gas safety controller. In the event of a power failure, a first switch of the oxidant gas safety controller is configured to connect the energy storage circuit to the oxidant gas flow valve, wherein the energy storage circuit is configured to discharge energy to the oxidant gas flow valve to increase the oxidant gas flow rate in order to extinguish a flame of the flame module, and the fuel gas safety controller is configured to close the fuel gas flow valve.