A gas burner of a cooktop appliance includes an annular burner body extending along the circumferential direction with an annular fuel plenum defined within the annular burner body. A plurality of ports are defined in the annular burner body. Each port of the plurality of ports extends from the annular fuel plenum inward towards a center of the gas burner assembly. The gas burner assembly also includes a vortex shield inward of the annular burner body along the radial direction. The vortex shield is positioned and configured to redirect a flow of unignited fuel from the ports away from the center of the gas burner assembly.

The invention relates to a burner for gas-fired cooking appliances, with a structure comprised of: a body (10) defining a chamber (12) within which an injector (14) inputs the gas which, upon mixing with air, forms the gas-air combustible mixture; a ring (16) positioned over the body and provided with a periphery along which are arranged the combustible mixture outlet ports (18), and a circular plate (20) that closes the top of the burner. At least the burner ring (16) is made of a metal or a metal alloy and is coated with a thin layer of material having catalytic activity, which may be coated on a catalyst precursor porous support substrate.

The invention relates to a burner for gas-fired cooking appliances, with a structure comprised of: a body (10) defining a chamber (12) within which an injector (14) inputs the gas which, upon mixing with air, forms the gas-air combustible mixture; a ring (16) positioned over the body and provided with a periphery along which are arranged the combustible mixture outlet ports (18), and a circular plate (20) that closes the top of the burner. At least the burner ring (16) is made of a metal or a metal alloy and is coated with a thin layer of material having catalytic activity, which may be coated on a catalyst precursor porous support substrate.

A burner assembly for and method of producing ethylene having a mechanism to inject either primary fuel, staged fuel, or both by premix methods before combustion in a furnace. The burner assembly has at least one premix injection assembly for either exclusively primary fuel or exclusively staged fuel injection paired with a nozzle mix injection or injection means for primary and staged fuel both by premix methods. The primary fuel premix assembly associates with a burner tile that consists of multiple inlets and outlets connected by venturi channels to direct and combine combustion air and staged fuel coming from staged fuel orifice spuds. Primary fuel and combustion air are mixed in a premix assembly and directed inside the furnace, and above the burner tile to complete the reaction with the staged fuel and combustion air mixture in a combustion zone inside of the furnace.

A burner assembly for and method of producing ethylene having a mechanism to inject either primary fuel, staged fuel, or both by premix methods before combustion in a furnace. The burner assembly has at least one premix injection assembly for either exclusively primary fuel or exclusively staged fuel injection paired with a nozzle mix injection or injection means for primary and staged fuel both by premix methods. The primary fuel premix assembly associates with a burner tile that consists of multiple inlets and outlets connected by venturi channels to direct and combine combustion air and staged fuel coming from staged fuel orifice spuds. Primary fuel and combustion air are mixed in a premix assembly and directed inside the furnace, and above the burner tile to complete the reaction with the staged fuel and combustion air mixture in a combustion zone inside of the furnace.

The invention is an automatic heat-source shut-off system for cooking stoves. When a burner's flame is turned on, or an electric stove's heating element is turned on, the invention begins a timed sequence that upon expiring causes the heat-source control shaft to be returned to the heat-off position.

A patio heater, has: a base to be supported on a ground; a stem protruding upwardly away from the base; and a heat generating device secured to the stem, the heat generating device having: a burner fluidly connected to a source of a fuel to be burned; a diffusion sheet enclosing a combustion chamber, the burner located inside the combustion chamber and surrounded by the diffusion sheet; a reflective shield located above the diffusion sheet; and at least one reflective fin mounted to the diffusion sheet and extending away therefrom.

An elongated burner assembly includes a first sidewall that defines a first plurality of ports and a second sidewall that defines a second plurality of ports. Ports of the first plurality of ports are angled towards a first end portion of the elongated burner, and ports of the second plurality of ports are angled towards a second end portion of the elongated burner. A related range appliance is also provided.

An elongated burner assembly includes a first sidewall that defines a first plurality of ports and a second sidewall that defines a second plurality of ports. Ports of the first plurality of ports are angled towards a first end portion of the elongated burner, and ports of the second plurality of ports are angled towards a second end portion of the elongated burner. A related range appliance is also provided.

A burner of a gas cooking appliance is mounted through a turn and lock mechanism established between a support member mounted below a cooktop of the appliance and a holder attached to the burner. More specifically, the holder and support member include interengaging structure, allowing the holder to be initially attached to and then twist secured upon the support member. In addition, locating structure is provided to assure the holder is appropriately positioned for proper alignment of the turn and lock mechanism. Furthermore, upon twisting the holder relative to the support member, locking structure retains the holder in a desired, operational position.