A gas valve assembly includes a gas valve and a control circuit. The gas valve is configured for variably controlling a flow of gas through the gas valve assembly. The control circuit includes a controller programmed to determine a first setting for the gas valve in response to a received commanded flow, adjust the first setting to a second setting based on a measured temperature when the measured temperature is one that may induce changes to the flow of gas through the gas valve assembly, and control the gas valve based on the second setting.

A cooking appliance and method of operating the same utilize a variable electromechanical valve to regulate an output power level of an oven broiler gas burner for a cooking appliance. Among other benefits, in some instances broiler control during cooking may be decoupled from oven warm-up, and in some instances support may be provided for automatic and/or user controlled broiler output power levels and/or automated broil profiles.

A grill for cooking food with a down firing burner affixed to the interior of the lid, above the food cooking surface. Below the food cooking surface is a clear panel that is easy to clean and may include a drain. There is no heat source below the cooking surface. Mechanical or electronic sensors automatically reduce the burner output when the lid begins to open or the handle is grasped anticipating that the lid is about to be opened.

A cooking appliance and method of operating the same utilize a multi-level valve system that regulates an output power level of a gas burner for an oven between a maximum output power level and at least one reduced output power level to selectively reduce the output power level of the gas burner during at least a portion of an oven warm-up operation, e.g., to improve burner operating characteristics during the oven warm-up operation.

A system for igniting a grill can include a solenoid valve, a flame rectification sensor, an igniter, and a control circuit connected to the solenoid valve and the flame rectification sensor. The solenoid valve controls flow of gas to the grill's burner and includes a switch that closes when a handle connected to the switch opens the solenoid valve. The control circuit sends current to the solenoid valve when the switch is closed to hold the solenoid valve open. After the switch closes, the igniter is ignited. After ignition, the control circuit monitors the presence of a flame with a flame rectification sensor. If no flame is detected after a certain amount of time, the control circuit stops sending current to the solenoid valve to close the solenoid valve.

A cooking appliance is disclosed that according to one embodiment includes a plurality of gas burners, an electrode associated with each burner for igniting the flame, a flame sensor associated with each burner for monitoring the flame and at least one electric switch associated with an actuator that is transitional between open and closed positions. The cooking appliance also includes a control unit electrically connected to the electrodes, the flame sensors, and the switch. When the switch assumes the closed position, the control unit is activated and then in turn powers the electrodes and the flame sensors. Thereafter, the control unit sequentially monitors the presence or absence of flame in the burners during repeated time cycles.

Implementations claimed and described herein provide system and methods for controlling griddle temperature. In one implementation, a temperature measurement of a region of a griddle top is obtained. The temperature measurement is captured using one or more sensors. A set temperature range is obtained for the region of the griddle top. The temperature measurement is compared to the set temperature range. One or more burners are adjusted based on whether the temperature measurement is within the set temperature range. The temperature of the region of the griddle top is maintained within the set temperature range using the one or more burners.

Implementations claimed and described herein provide system and methods for controlling griddle temperature. In one implementation, a temperature measurement of a region of a griddle top is obtained. The temperature measurement is captured using one or more sensors. A set temperature range is obtained for the region of the griddle top. The temperature measurement is compared to the set temperature range. One or more burners are adjusted based on whether the temperature measurement is within the set temperature range. The temperature of the region of the griddle top is maintained within the set temperature range using the one or more burners.

This invention relates to a method of monitoring a burner (2) and/or a burning behavior of a burner (2) by means of a measured ionization signal. The invention consists in that the ionization signal is measured between an ionization electrode (4, 4′) and a counter-electrode (3) spaced apart from a burner surface (2′) of the burner (2). Furthermore, the invention relates to a burner assembly.

A control system of a water heater apparatus with a combustible gas burner is presented where the apparatus includes a pilot burner with an intermittent-type pilot flame, a main burner, a pilot valve and a main valve, a control unit, a flame detection electrode, introduced into the flame of the pilot burner, and which is configured to conduct an ionization current. The control unit is configured to measure/detect a variation involving increase/decrease of the intensity of ionization current detected, the variation in intensity of ionization current being generated during the change between a first condition, in which the ionization current identifies the ignition state of only the pilot burner, and a second condition, in which the ionization current identifies the simultaneous ignition state of the pilot burner and the main burner so that, by detection of the measurement/variation of ionization current, the effective ignition of the main burner is recognized.