Valvular control circuit (10) comprising a first valve element (12) coupled with a manual drive member (20) to generate a pilot light (21), a second valve element (14) coupled with a second valve switch (15), a control and command unit (16) coupled with a DC/DC electric voltage converter (17) and able to command said second valve switch (15) by means of a command signal, wherein said valvular control circuit (10) comprises a first thermoelectric power source (22) coupled with the DC/DC electric voltage converter (17), and a second thermoelectric power source (23) coupled with at least one of either the first valve element (12) or the second valve element (14), said thermoelectric power sources (22, 23) both being fed by a pilot light (21).

A gas burner assembly for a cooktop appliance is provided. The gas burner has a gas stability chamber for providing a re-ignition source to primary burner ports positioned around the burner without the noises associated with spark controlled cycled burners. The stability chamber may entrain air from above the cooktop appliance for increased stability.

A gas appliance includes a burner, a gas valve, an ignitor, a thermocouple, and a control device, wherein the control device is adapted to execute a control method comprising the following steps: controlling the ignitor to ignite and the gas valve to open; receiving a sensing voltage output from the thermocouple; stop the ignitor from igniting and controlling the gas valve to keep a gas pipe be in an open state when the sensing voltage increases to a first voltage; receiving the sensing voltage output from the thermocouple continuously, and controlling the gas valve to block the gas pipe when the sensing voltage decreases from higher than a second voltage to lower than the second voltage, wherein the second voltage is higher than the first voltage. Whereby, an ignition procedure could be speeded up and the gas could be blocked earlier as the flames are extinguished.

A gas appliance includes a burner, a gas valve, an igniter, a thermocouple, and a control device. The control device is adapted to execute a control method comprising the following steps: controlling the igniter to ignite and controlling the gas valve to open; receiving a detected voltage output from the thermocouple; controlling the igniter to stop igniting and keeping the gas valve open when the detected voltage reaches a first voltage value; receiving the detected voltage output from the thermocouple continuously, and controlling the gas valve to close the gas pipe when the detected voltage above a second voltage falls below the second voltage. The second voltage value is higher than the first voltage value. As such, an ignition procedure may be speeded up and the supply of the fuel gas may be interrupted more quickly when the flame is extinguished.

The present invention provides a main nozzle of a combustor, a plurality of the main nozzles are to be installed on an outer peripheral side of a pilot nozzle of the combustor at an interval in a circumferential direction of the pilot nozzle, the main nozzle includes a main nozzle body extending in an axial line; a swirl vane protruded from an outer peripheral surface of the main nozzle body in a radial direction of the axial line, and is configured to allow a fluid flowing downstream in a direction of the axial line to swirl around the axial line; and temperature sensors installed on the main nozzle body so as to be disposed on a tangential line to a mean line of the swirl vane drawn between a vane ventral surface and a vane dorsal surface of the swirl vane, at a downstream end portion of the swirl vane.

According to one embodiment a gas cooking appliance is provided that includes at least one burner and a manual regulating valve for each burner. The manual regulating valve includes a manual actuator movable in a range of actuation (A) to vary a gas flow rate (Q) therethrough. At least one electromagnetic valve fluidly communicates the manual regulating valve and the burner. A control unit controls the electromagnetic valve. At least one temperature sensor is electrically connected to the control unit to measure a temperature related to a cooking process. A cooking program selector is electrically connected to the control unit and mechanically coupled to the manual actuator, such that each cooking program is associated with a gas flow rate, the program selector including at least one cooking program with temperature regulation.

A gas burner arrangement for a hotplate includes at least two gas burners, each gas burner having operably connected thereto a gas valve for regulating a combustion gas flow to the gas burners, and a thermoelement for monitoring a flame of the gas burners. The thermoelement is coupled to the gas valve by an electrical circuit, such that when the flame of the associated gas burner is extinguished, the combustion gas flow to the gas burner is interrupted with the aid of the gas valve. Each electrical circuit includes a mechanically actuatable switch configured to couple or decouple the electrical circuit between the associated thermoelement and the associated gas valve. The mechanically actuatable switch includes a contact element having a noble metal. A shared actuation element controls the mechanically actuatable switches of the electric circuits.

The present invention relates to an electromechanical system for automating the turning off of the knobs of a stove. The system can quickly identify the occurrence of a gas leak and turn off the knob corresponding to the burner that is leaking. The system is also connected to a user interface, providing real-time information about the status of the burners and allowing the user to turn off the knobs remotely. The system has an improved service life, does not considerably change the aesthetics of the stove and can be designed to fulfil different torque requirements. The invention also relates to cooktops comprising said system.

Control system for controlling the pilot flame of a combustible gas device, which includes a pilot burner, a main burner, and a valve assembly, which includes a pilot valve that allows/intercepts a flow of gas directed towards the pilot burner, and a main valve that allows/intercepts a gas flow to the main burner, the valve assembly moveable between a closed OFF state, a PILOT state, and an ON state, where gas flows to the main burner. The control system includes a detection device that generates a state signal, and a control unit including a timer, the control unit is operatively connected to the detection device to receive a state signal and to an actuator to close the valve. The control unit starts the timer when the state signal represents the PILOT state, and actuates the actuator for the pilot valve to close it when the timer reaches a preset limit.

A gas safety valve adapted to a domestic appliance is provided that includes an electromagnet, a phase wire and a ground wire. A support of the electromagnet includes a housing in which resides a phase closure. A segment of the phase wire and a segment of the ground wire are respectively electrically connected with the phase closure and with the support. According to one embodiment the valve includes a connector inserted in the housing of the support. The connector having inserted therein a first end portion of a phase terminal and a first end portion of a ground terminal that are respectively electrically connected with the phase closure and an inner area of the support. Each of the phase terminal and ground terminal including a second end portion that resides exposed to the outside of the valve.