A flame ionization detector has a combustion chamber with an electrode arrangement for measuring an electric current from a gas flame to an electrode of the electrode arrangement, a burner nozzle having at least one output-side outlet for ejecting a gas mixture to be ignited between the electrode arrangement and having at least one input-side inlet for feeding a hydrogen-containing combustible gas and a carbon-containing gaseous analyte through a transport channel to the outlet, and a feeder for feeding oxygen-containing combustion air into the combustion chamber, wherein at least one cut-out is provided in the burner nozzle, through which cut-out combustion air can pass from the combustion chamber into the gas mixture flowing out of the outlet.

A system and method for electrically charging a combustion flame with a power supply.

A cooktop defining comprises an open loop gas burner, a closed loop gas burner, a flame rectification circuit for detecting a flame at the closed loop gas burner, a spark module comprising a plurality of spark electrodes, at least one of the plurality of spark electrodes being operably coupled to each of the open loop gas burner and the closed loop gas burner, and a controller in operative communication with the flame rectification circuit and the spark module. The controller is configured to determine that the closed loop gas burner is performing the closed loop cooking operation, determine that no flame is present at the closed loop gas burner using the flame rectification circuit, and operate the spark module to energize the plurality of spark electrodes in response to determining that no flame is present during the closed loop cooking operation.

The present disclosure relates to a method for operating a burner assembly comprising a burner (1) burning an air-fuel mixture. In a step of the method, a target value for an ionization current is specified. The burner (1) is operated in a first operating state at a first specified power level. The ionization current (9) is measured using an ionization electrode (5). The measured ionization current (9) is compared with the predefined target value and a deviation is determined. When the deviation exceeds a predefined threshold value, the burner (1) is transitioned to a second operating state at a second power level. The second power level is higher than the first power level. The second power level is determined as a function of the deviation.

A gas powered appliance includes a main burner for burning gas, a flame sensor assembly, and a controller. The flames sensor assembly includes a probe positioned proximate the main burner to couple an electric current to the main burner through a flame on the main burner, a flame detector circuit providing a digital signal indicating presence or absence of the flame on the main burner based on the electric current, and a flame strength circuit receiving a voltage on a component of the flame detector circuit and outputting an analog signal based on the voltage. The controller is connected to the flame sensor assembly and programmed to control the main burner to receive the digital signal from the flame detector circuit, receive the analog signal from the flame strength circuit, and determine, based on the analog signal from the flame strength circuit, a strength of the flame.

A flame detection device that uses a breakthrough voltage across a pair of electrodes located in a flame zone to detect the presence of a flame. The flame detection device may be used with a burner that is part of a furnace in a central heating system for a home or building. Unlike conventional flame detection devices that measure ionization current in a flame, the flame detection device detects a flame by determining the voltage required for a spark event across a spark gap located in a flame zone (also referred to as the breakthrough voltage), and evaluating the breakthrough voltage and/or its various characteristics to detect the presence or absence of a flame. According to one example, the flame detection device includes a power supply, an ignition unit, output wires, insulators, and electrodes.

Disclosed are a flameout protection system and a heater. The flameout protection system includes a stove head, a double-needle electrode rod, an electromagnetic valve and a plasma controller. The stove head is provided with an ejection tube and a flame hole. The double-needle electrode rod is connected to the ejection tube, and one end of the double-needle electrode rod is close to the flame hole. The electromagnetic valve is connected to the ejection tube, and the electromagnetic valve is communicated with the flame hole. The plasma controller is electrically connected to the double-needle electrode rod, and the plasma controller is electrically connected to the electromagnetic valve.

A premixing apparatus that mixes a fuel gas with air and supplies an air-fuel mixture in a burner through a fan includes a control device that is configured to carry out a third control that: calculates and memorizes a lower limit of a rotational speed of a fan, at which an increase of an opening degree of a variable throttle valve becomes necessary, as a first threshold; and when the rotational speed of the fan increases to the first threshold or faster next time, immediately changes the opening degree of the variable throttle valve to an increased opening degree, which is larger than a predetermined standard opening degree and is obtained by multiplying a deviation of the rotational speed of the fan from the first threshold by a predetermined coefficient.

Various embodiments include a combustion apparatus comprising: a control facility for open- and/or closed-loop control of the apparatus; a combustion chamber; an actuator adjusting an air supply; and a combustion sensor in a region of a flame of the chamber. The control facility stores a list of support points. A first air supply value is assigned to each support point. A drift test value and an index for ascertainment of a test result are assigned to each support point. The controller: generates a specified air supply; selects a support point as a function of the air supply; and decides on a test result using the index for the support point. To ascertain a test result: receives a signal from the combustion sensor; determines a new test result; ascertains a changed drift test value for the selected support point; and stores the changed drift test value as the drift test value.

Systems and methods for pre-ignition moisture removal in heating appliances are provided. The heating appliance may be configured, prior to initiating a combustion process using a combustion system of the heating appliance, to determine whether a flame sensing unit is producing false positive outputs. In some instances, such false positive outputs may be caused by moisture within the combustion cabinet of the heating appliance. To attempt to eliminate any false positive outputs, the heating appliance may perform ana action to expel the moisture from the combustion cabinet. For example, an inducer may be activated to expel the moisture using airflow. This ensures that the flame sensing unit is producing accurate data before the combustion process is initiated.