The present disclosure describes a metal making burner in fluid communication with a gas inlet and comprising an oxygen inlet valve that provides control of oxygen flow to two different discharge lines, such as a main line and a shroud line. This allows distinct “modes” of operation, utilizing only the flow from the single oxygen supply as the control method. The apparatus includes a moving piston with ports therein that meter flow to both discharge lines when the ports line up with a separate set of ports in a cylinder that receives the piston. At low or no pressure from the gas inlet, flow rates follow one ratio of flows between the discharge lines. As pressure from a gas inlet changes in the burner, the piston moves and realigns the ports (opening or closing some of the ports), which results in a different ratio of flows between the discharge lines.

An all-purpose gas stove structure capable of increasing its air intake includes an all-purpose opening-covering case, an extended supporting frame, and at least one gas nozzle. The all-purpose opening-covering case includes an opening-covering case body for covering the heat source-receiving opening of a roasting/grilling device completely, and a gas controller with a gas operation unit for controlling the state of communication between gas input and output ends. The extended supporting frame is a box with a protective lid, is coupled to the inner side of the opening-covering case body at one end, and has a stove burner opening at the opposite end. The lateral walls of the protective lid are formed with vent holes. The gas nozzle is provided on the inner side of the stove burner opening. The all-purpose gas stove structure allows a ceramic roasting/grilling device to have a higher air intake and therefore produce higher heat.

A double flow rate gas solenoid valve has an inlet and at least a first outlet in a housing. First and second solenoids are selectively operable relative to first and second valve seats to establish first and second gas flow paths, respectively. The second flow path has a restriction thereby resulting in a lower gas flow rate through the second flow path than the first flow path. When connected to a common inlet of a burner, at least two, if not three flow rates can be provided by the valve.

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.

A cooking appliance and system therefor utilize a burner group capable of operating in multiple modes such that gas cooktop burners disposed in the burner group may be collectively or individually controlled in different modes.

Portable grills are disclosed. An example portable grill includes a frame, a leg unit, and a leg latch assembly. The leg unit is coupled to the frame. The leg latch assembly includes a post rigidly coupled to the leg unit, and a swing plate pivotally coupled to the frame. The swing plate includes an opening to receive the post when the portable grill is in a collapsed configuration. The opening includes a first post-receiving portion having a first diameter, and a second post-receiving portion having a second diameter less than the first diameter. The swing plate is pivotable to selectively locate the post in the first post-receiving portion or the second post-receiving portion. The swing plate is separable from the post when the post is located in the first post-receiving portion, and inseparable from the post when the post is located in the second post-receiving portion. The leg latch assembly latches the leg unit in a fixed position relative to the frame when the post is located in the second post-receiving portion, and unlatches the leg unit from the fixed position when the post is located in the first post-receiving portion.

A regulator assembly is disclosed. The regulator assembly can include a regulator having a gas inlet and a gas outlet. The regulator assembly can also include an extension pipe having a proximal end and a distal end. The regulator assemble can also include an orifice disposed in the extension pipe for modification of the gas flow.

A coaxial gas valve assembly includes a gas inlet, a gas outlet, a valve tube, and a shaft member. A main valve is movable between a closed position and an open position (broadly, openable and closable). A main spring is positioned to resiliently bias the main valve in its closed position. A redundant valve is movable between a closed position and an open position (broadly, openable and closable). A redundant spring is positioned to resiliently bias the redundant valve in its closed position. A solenoid coil is positioned to electromagnetically move the shaft member within the valve tube. A balance diaphragm is connected to the valve tube. A gas path through at least the valve tube allows gas flow from a first side of the balance diaphragm to a second side of the balance diaphragm to reduce a pressure difference between the first and second sides of the balance diaphragm.

A gas cooktop may include: a gas burner; a sensor configured to sense temperature of a cooking container heated by the gas burner; a valve configured to control flow rate of gas from a gas source to the gas burner; and a control system including circuitry. The control system may start operation of the gas burner; receive sensor signals from the sensor indicating the temperature of the cooking container; and based on received sensor signals representing the sensed temperature of the cooking container and a cooking profile indicating one or more durations and one or more temperatures, control the valve to change the gas flow rate to the gas burner.

A fuel control device includes a combustion temperature estimation value calculation unit that calculates a temperature estimation value when a mixture of fuel and inflow air is burned using an atmospheric condition, an opening degree command value of a valve that controls the amount of air that is mixed with the fuel and burned, and an output prediction value calculated on the basis of a fuel control signal command value used for calculation of a total fuel flow rate flowing through a plurality of fuel supply systems, a fuel distribution command value calculation unit that calculates a fuel distribution command value indicating a distribution of fuel output from the fuel supply systems based on the temperature estimation value, and outputs the fuel distribution command value, and a valve opening degree calculation unit that calculates each valve opening degree of a fuel flow rate control valve of the fuel supply systems.