A fuel supply system for a gas burner assembly includes an eductor for providing a mixed flow of fuel into a fuel chamber of the gas burner assembly. The eductor includes a suction chamber defining a suction inlet, a motive nozzle positioned within the suction chamber, and an eductor outlet positioned proximate an inlet to the fuel chamber. A fuel supply provides a first flow of fuel through a first fuel supply conduit to the suction inlet and a second flow of fuel through a second fuel supply conduit to the motive nozzle. A fuel pump is operably coupled to the second fuel supply conduit for increasing a pressure of the second flow of fuel such that the second flow generates a negative pressure within the suction chamber to increase the first flow of fuel.

The invention relates to a gas burner arrangement comprising: a gas burner (2) with at least three burner sections (2.1, 2.2, 2.3); a gas tap (3) comprising at least one gas inlet (3.1) coupled with a gas supply line (4) and two gas outlets (3.2, 3.3); a divider entity (5) comprising a divider inlet (5.1) and two or more divider outlets (5.2, 5.3); an on/off valve (6) adapted to open/close a gas line; wherein a first burner section (2.1) is coupled with a first gas outlet (3.2) of the gas tap (3), wherein the second gas outlet (3.3) of the gas tap (3) is coupled with the divider inlet (5.1), wherein a first divider outlet (5.2) is coupled with a second burner section (2.2), wherein the second divider outlet (5.3) is at least indirectly coupled with an inlet (6.1) of the on/off valve (6) and the outlet (6.2) of the on/off valve (6) is coupled with the third burner section (2.3).

Methods and systems for a fire device, comprising a common fuel line coupled to a fuel source via a first pressure regulator, wherein the first pressure regulator is configured to provide gaseous fuel from the fuel source to the common fuel line at a first pressure. A first fire display device is coupled to the common fuel line via a second pressure regulator, wherein the second pressure regulator is positioned downstream of the first pressure regulator and provides the gaseous fuel to the first fire display device at a second pressure that is lower than the first pressure.

Cooktop appliances are provided. A cooktop appliance can include a gas burner; a manifold having a gas input; a primary line extending between the manifold and the gas burner, wherein a gas flow rate in the primary line is controllable by a user selectable interface; and a secondary line extending between the manifold and the gas burner, wherein a gas flow rate in the secondary line is controllable by a flow control valve.

A fuel supply system for a gas burner assembly. The gas burner assembly includes an inner burner stage positioned concentrically within an outer burner stage. The fuel supply system includes a fuel supply for providing a primary flow of fuel through a primary fuel conduit and a single outlet control valve operably coupled to the primary fuel conduit. A first and second fuel supply conduit split off of the primary fuel conduit and are fluidly coupled with the outer burner stage and the inner burner stage, respectively. A shutoff valve is operably coupled to one of the first fuel supply conduit and the second fuel supply conduit and is configured for closing when a flow rate of fuel through the shutoff valve drops below a predetermined flow rate.

A burner body includes a wall that defines a combustible-gas chamber. The burner body further includes gas-flow inlet communicating with the combustible-gas chamber and a plurality of burner ports that permit combustible gas to flow from the chamber to an exterior of the burner body. The burner body further includes one or more flow restrictions configured to restrict flow through a proportion of the burner ports. When combustible gas is supplied at a first flow rate, each flow restriction is configured to restrict flow through an associated burner port at a first restriction ratio. When combustible gas is supplied at a second flow rate that is smaller than the first flow rate, each flow restriction is configured to restrict flow through its associated burner port at a second restriction ratio that is less than the first restriction ratio.

A gas hob comprising a top sheet, a port, a gas burner arranged on the top sheet and releasably connected to the port the port being configured to supply the gas burner with fuel gas, and an extraction unit configured to extract fumes, the extraction unit being retractable into the top sheet.

A gas distribution unit includes a main flow passage and a plurality of distribution flow passages that branch from the main flow passage and supplies a fuel gas to each of groups of a plurality of nozzles. A main body includes a main depressed portion that forms the main flow passage, a plurality of depressed portions that form the respective distribution flow passages, and fuel gas inlets provided at upstream ends of the respective depressed portions and communicated with the main depressed portion. Among the inlets, the inlet of the depressed portion corresponding to the group including the largest number of the nozzles is formed to have a diameter larger than diameters of the inlets of the other depressed portions, and the inlet having the large diameter is formed to have a thickness in a center axis direction smaller than thicknesses of the inlets of the other depressed portions.

A combustion device includes a solenoid valve configured to open and close an inflow port and an additional solenoid valve configured to open and close a communication port selectively mountable at an upstream end of a distribution flow passage with a small number of nozzles. When the additional solenoid valve is mounted, a state of supplying a fuel gas to only a distribution flow passage with a large number of the nozzles by opening the solenoid valve and closing the additional solenoid valve and a state of supplying the fuel gas to two distribution flow passages by opening the solenoid valve and opening the additional solenoid valve are mutually switchable. When the additional solenoid valve is not mounted, a state of supplying the fuel gas to the two distribution flow passages by opening the solenoid valve and a state of not supplying the fuel gas are mutually switchable.

A heater assembly can be used with a gas appliance. The gas appliance can be a dual fuel appliance for use with one of a first fuel type or a second fuel type different than the first. The heater assembly can include a pressure sensor and a plurality of valves operable by a control module dependent upon a detected fuel pressure. The valves may be solenoid valves that can reduce the available fuel delivery paths to limit fuel delivery to a burner when a higher pressure, such as detection of LP gas, is detected.