The present disclosure relates to a switching assembly for an ignition circuit of a gas cooker, a switching mechanism including the switching assembly, and a gas cooker including the switching mechanism. The gas cooker includes a gas valve structure configured for the passing through and cutting off of a gas, the gas valve structure includes a plunger and a valve housing, and the switching assembly includes: a permanent magnet carrier configured to be connected to the plunger to move between an initial position and a working position with the plunger; a permanent magnet fixed onto the permanent magnet carrier; a reed switch connected to the ignition circuit via a cable; a sealing structure configured to be provided at a connection segment between the reed switch and the cable so as to protect the connection segment from an environment where the switching assembly is located. When the permanent magnet carrier is in the initial position, a distance between the permanent magnet and the reed switch allows the reed switch to be free from the effect of the permanent magnet; and when the permanent magnet carrier is in the working position, the permanent magnet is close to the reed switch so as to exert a magnetic effect on the reed switch.

A dual-gas source gas control system with anti-gas source misconnection and a control circuit thereof belonging to the gas combustion technical field are provided. The disclosure solves unreasonable design and other problems in the related art. The dual-gas source gas control system with anti-gas source misconnection and the control circuit thereof includes a power-on circuit, connected in series with an external power supply and an igniter switch to form a loop, including a self-locking switch triode connected in series with the external power supply and a self-locking amplifying triode connected to a base electrode of the self-locking switch triode; an MCU control circuit, including an MCU control chip, wherein the power-on circuit is connected to a power input pin of the MCU control chip, one pin on the MCU control chip is configured to detect whether the power-on circuit is connected.

A burner supporting primary and secondary combustion reactions may include a primary combustion reaction actuator configured to select a location of the secondary combustion reaction. A burner may include a perforated flame holder structure configured to support a secondary combustion reaction above a partial premixing region. The secondary flame support location may be selected as a function of a turndown parameter. Selection logic may be of arbitrary complexity.

A device for igniting/re-igniting the flame for a gas burner, for example for a cooktop, is capable of receiving a supply voltage from a supply source. The device is furthermore configured for receiving a signal representing the presence of the flame. The flame ignition/re-ignition device is configured for activating a spark activation circuit (70) configured for generating sparks for igniting the flame when the signal representing the presence of the flame indicates absence of flame, and interrupting the generation of sparks when the signal indicates presence of flame. Furthermore, the flame ignition/re-ignition device comprises an anti-inversion circuit (40) configured for uncoupling the flame ignition/re-ignition device from the direction of insertion of a supply plug for the device into a domestic power outlet, making the device insensitive to the polarity adopted in the connection between the plug and the power outlet.

Exemplary embodiments are disclosed of controls including circuit assemblies configured for determining igniter, inducer relay, and igniter relay faults. In exemplary embodiments, a control for a system includes an input configured to receive a control signal, an inducer relay, an igniter relay, and a circuit assembly. The circuit assembly is configured to be coupled to the inducer relay, the igniter relay, and an igniter of the system. The circuit assembly comprises a plurality of diodes and is configured to enable detection of and distinguishing between a failure of the igniter, a failure of the inducer relay, and a failure of the igniter relay as determined by a waveform of the control signal at the input of the control for a given one of a plurality of operational states of the control.

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.

An exhaust detecting safety switch assembly for turning off an oil burner when a disruptive quantity of exhaust is detected includes an oil burner. The oil burner ignites oil to define a flame when the oil burner is turned on. An ignition is positioned in and is in electrical communication with the oil burner. The ignition is actuated to ignite the oil. A shutoff is electrically coupled to the ignition and is actuated to turn the oil burner off when the shutoff no longer detects the flame. A safeguard unit is mounted on and is in fluid communication with the oil burner. The safeguard unit is electrically coupled to the ignition. The safeguard unit detects when the oil burner emits a disruptive quantity of opaque exhaust and when detected turns the oil burner off. The safeguard unit is positioned to inhibit access to the safeguard unit.

A flame ignition and control system includes at least one gas burner, which is connected to a gas source via a flame control system, and a safety valve controlled by a flame sensor consisting of a thermocouple. The safety valve has an open state, in which the source supplies gas to the burner, and a closed state, in which gas flow is obstructed, the switching from the open state to the closed state and vice versa being controlled by the electric signal generated by the thermocouple. An igniter device is provided, which consists of an ignition electrode and a power supply unit thereof. Furthermore, at least the operation of the igniter device is controlled according to the current strength of the electric signal generated by the thermocouple.

A cooking appliance includes: a gas cooking element; an igniter disposed adjacent to the gas cooking element to ignite the gas cooking element; a gas valve for regulating gas flow to the gas cooking element; a burner control mechanically coupled to the gas valve to vary the gas flow to the gas cooking element; a sensor for detecting the positioning of the burner control in an ignition range of positions; and a control circuit coupled to the igniter and the sensor and to activate the igniter in response to detected movement of the burner control into the ignition range of positions, the control circuit further configured to maintain activation of the igniter for a predetermined minimum length of time once activated.

Example embodiments relate to a burner including a control unit and an ignition and ionization electrode for igniting and monitoring the burner flame, wherein the ignition and ionization electrode is arranged in the flame area of the burner, is electrically coupled to a discharge circuit and provides an ionization signal when the flame of the burner is switched on, wherein the control unit provides an output signal for actuating the burner on the basis of the ionization signal, and wherein the discharge circuit is connected to a DC voltage source. Example embodiments further relate to a method of monitoring and igniting the flame of a burner and to a circuit arrangement for a burner.