Provided are embodiments of a gas valve for an intermittent pilot ignition system. The gas valve includes features designed to address the buildup of negative pressure in a fuel line connected to the gas valve that could cause internal valve diaphragms to open, drawing fuel from the gas valve. In embodiments, the gas valve includes a system of check valves designed to seal off the gas valve when a negative pressure develops. In other embodiments, the gas valve includes a relief valve having a relief port so that air is able to enter the valve proximate to the inlet port so as to avoid building a negative pressure sufficient to open the diaphragms. In both cases, the valve remains primed with fuel for subsequent ignition. The gas valve is envisioned to be useful for a variety of pilot operated systems.

A premixing apparatus includes a mixing unit, an air supply adjusting unit, and a gas switching unit. The mixing unit draws a fuel gas in the mixing unit by supplied air to mix the fuel gas and the supplied air with each other. The air supply adjusting unit applies a load on the supplied air flowing toward the mixing unit and switches the load. The gas switching unit switches a gas amount of the fuel gas to be supplied to the mixing unit.

Methods and systems for a flame display may comprise flowing fuel from a fuel source to a burner via an electric valve fuel passage that includes an electric valve and via a mechanical valve fuel passage that includes a mechanical valve, receiving a flame boost mode request, and adjusting the electric valve to a wide open position. The flame display may further be operated in a music mode in which the electric valve is adjusted based on an audio input or in a standard mode.

The present invention discloses a regulating mechanism regulating the flows from a plurality of gas outlets in a fuel gas valve, comprising an actuator, a push rod, a presser plate assembly, regulating rods and a valve body. Wherein the valve body has a plurality of gas outlets, a regulating rod is provided in each regulating port which exists between the gas inlet and each gas outlet, a resetting device is provided between each regulating rod and the valve body, and the actuator drives the push rod which is around by the regulating ports to move along the axis. The push rod causes the presser plate assembly to move up and down to press or relax the regulating rods and simultaneously change the degree of opening between the head portion of each regulating rod and the corresponding regulating port so that the flow from each gas outlet changes synchronously.

The present invention provides a gas safety device using low power to control high flow, which includes a controller, a differential pressure regulating valve, and a driver, the controller can control if the gas can flow into the differential pressure regulating valve, the differential pressure regulating valve is connected to the controller, and can control if the gas can flow out for burning according to the gas pressure changes, the driver uses a drive piece to drive a micro switch lever inside the controller, so that the controller can output gas, thus, the present invention can control high gas flow with low power while maintaining safe usage of the gas.

Methods and systems for programming and controlling a control system of a gas valve assembly. The methods and systems include programming a control system in an automated manner to establish an air-fuel ratio based at least in part on a burner firing rate. The established air-fuel ratio may be configured to facilitate meeting a combustion constituent set point of combustion constituents in the combustion exhaust. The methods and systems include controlling operation of a combustion appliance based on closed-loop control techniques and utilizing feedback from a sensor measuring combustion constituents in exhaust from a combustion chamber in the combustion appliance. The combustion constituents on which control of the combustion appliance may be determined include oxygen and/or carbon dioxide.

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.

A thermoelectric assembly for powering one or more electromagnetic valves of a cooking appliance. According to one embodiment the assembly includes a main current circuit that includes a thermocouple, a cable configured for electrically connecting the thermocouple with an electromagnetic valve, and a transistor connected to the cable and configured for de-energizing the electromagnetic valve. The main current circuit also includes a connection module that includes a power supply connected to the transistor, the power supply having input terminals configured for being connected to an external energy source, a rectifier, and a resistive block connected between one of the input terminals and the rectifier, the resistive block being configured for minimizing the current circulating through the power supply to a value equivalent to the galvanic isolation.

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.

The present disclosure relates to a cooking apparatus including a heating device, a gas passage to guide gas supplied from the outside to the heating device, a gas valve configured to supply gas to the gas passage, a modulating valve configured to adjust the degree of opening of the gas passage, a boosting passage formed to be branched from a first portion of the gas passage and joined to a second portion of the gas passage positioned in the rear of the first portion along a direction in which gas in the gas passage flows, a boosting valve configured to open and close the boosting passage, a first nozzle disposed between the first portion and the second portion of the gas passage, and a second nozzle disposed between the second portion of the gas passage and the heating device.