A burner for heating a heating space with a reduction of NOx emissions is provided. The burner includes a mixing and combustion chamber, a mixing and igniting device disposed in the mixing and combustion chamber, and a fuel feed connected to the mixing and igniting device and configured for feeding fuel to the mixing and igniting device. Further, an air feed is provided, which is configured for feeding at least one partial air flow to the mixing and combustion chamber. A combustion chamber opening opens the mixing and combustion chamber towards a heating space to be heated. Furthermore, control means are configured for controlling a fuel flow via the fuel feed and for controlling at least one partial air flow via the air feed.

The hydrogen gas burner has a first pipe extendable into an oven chamber, having a plurality of through-holes in a sidewall thereof, fluidly communicating an interior of the first pipe with an exterior thereof. A combination gas valve and pressure regulator is connected to an inlet of the first pipe and fluidly connects a hydrogen gas source with the first pipe, such that the hydrogen gas flows into the first pipe and exits therefrom through the through-holes. An igniter ignites and initiates combustion of the exiting hydrogen gas. A second pipe is extendable into the oven chamber, having apertures in the sidewall thereof fluidly communicating an interior of the second pipe with an exterior thereof. The second pipe fluidly connects at an inlet thereof with an air source, whereby the air flows into the second pipe from the inlet thereof and exits out of the second pipe through the apertures.

A temperature sensor detects the presence of a flame by measuring the temperature near the flame site, and an actuator positions an ignition device in based on the temperature sensor's reading. The ignition device is positioned near the flame site if the flame is not present and further from the flame site if the flame is present.

An adjustable vortex flame device includes a control head delimiting a through hole with an opening and including a flow guiding mechanism including a plurality of vanes and a flow control head inserting in the through hole. The flow control head includes a first member and a second member detachably engaging with each other and delimiting a first chamber and a second chamber connecting to each other. The two channels extend in the first member and to an outer periphery of the flow control head and connect to the first chamber. The flow control head has two flow outlets defined at distal ends of the two channels and a flow inlet defined at a distal end of the second chamber. A hollow and transparent shield is disposed above the control head and delimits a space fluidly connecting to the through hole.

A gas pipe ignitor for igniting a non-premixed air and fuel mixture includes a housing having an axially interior space along its length, a supply end segment, a flame end segment axially spaced from the supply end segment, and a flexible segment spaced between the supply end segment and the flame end segment. A fuel supply conduit extends axially within the housing, and the fuel supply conduit is operatively flexible with the flexible segment. An ignition conduit extends axially within the housing, and the ignition conduit is operatively flexible with the flexible segment. A detector conduit extends axially within the housing, and the detector conduit is operatively flexible with the flexible segment. An air supply conduit is operatively connected to the housing at the supply end segment and provides combustion air within the interior space.

A tool includes a barrel, a guiding wire, and an electrically conductive member. The barrel is made of electrically conductive material. The guiding wire is disposed in the barrel. The barrel and the guiding wire are directly or indirectly connected to two opposite electrodes of a power source. The electrically conductive member is connected to an outer periphery of the guiding wire and is electrically connected to the guiding wire. The electrically conductive member is disposed between the barrel and the guiding wire and is spaced from the barrel. When the power source is activated, an electric arc is generated between the electrically conductive member and the barrel.

The hydrogen gas burner has a first pipe extendable into an oven chamber, having a plurality of through-holes in a sidewall thereof, fluidly communicating an interior of the first pipe with an exterior thereof. A combination gas valve and pressure regulator is connected to an inlet of the first pipe and fluidly connects a hydrogen gas source with the first pipe, such that the hydrogen gas flows into the first pipe and exits therefrom through the through-holes. An igniter ignites and initiates combustion of the exiting hydrogen gas. A second pipe is extendable into the oven chamber, having apertures in the sidewall thereof fluidly communicating an interior of the second pipe with an exterior thereof. The second pipe fluidly connects at an inlet thereof with an air source, whereby the air flows into the second pipe from the inlet thereof and exits out of the second pipe through the apertures.

A method and apparatus for a gas burner head with at least a first burner region and a second burner region, an ignitor located near the gas burner, and a burner drive that is configured to generate relative rotation between the first and second burner regions of the gas burner to transfer a flame between the first and second burner regions during the relative rotation.

Hot surface igniter assemblies used in cooktops are shown and described. The hot surface igniters include a silicon nitride ceramic body with an embedded, resistive, heat-generating circuit. When energized, the circuit generates temperatures in excess of 2000° F. in under 4 seconds to ignite cooking gas such as natural gas. To prevent damage to the igniter during use or cleaning, an insulator assembly is provided which protects the distal end of the igniter ceramic body from damage while still exposing it to the cooking gas flow from the burner. In addition, a number of different terminal connection schemes for connecting the igniters to a power source are shown and described.

An embodiment of a combustor for a gas turbine engine includes a combustor case, a combustor liner disposed within the combustor case, a fuel nozzle at an upstream end of the combustor liner, a torch igniter within the combustor case, and a removable fuel injector. The torch igniter includes a combustion chamber, a cap configured to receive a removable fuel injector and a surface igniter, a tip, an annular igniter wall extending from the cap to the tip and defining a radial extent of the combustion chamber, a structural wall coaxial with and surrounding the igniter wall, and an outlet passage within the tip which fluidly connects the combustion chamber to the combustor. The removable fuel injector extends through a fuel injector opening of the combustor case. The diameter of the fuel injector opening is wider than a fuel injector diameter of the removable fuel injector.