Provided is a torch including a body having a first portion and a second portion angled relative to the first portion, a control knob at a top of the second portion for adjusting a flow of fuel through the torch, a trigger at a top of the first portion that is movable from an off position to an on position to at actuate an igniter, and a burn tube extending from an end of the second portion away from the first and second portions.

A combustor having an outer stack placed around a fire tube of the combustor to direct cooler air upwards to envelop an exhaust plume from the fire tube as an air shield or curtain barrier to prevent fugitive gases coming into contact with the exhaust plume and auto-igniting.

The present invention is a system that utilizes high pressure gas (greater than ½ psig) to control flow rate and gas discharge velocity to enable interchangeability between a plurality of gases without having to change the gas/air mixing venturi size or air opening. A new approach is to use the available incoming higher gas pressure to the appliance then control the volumetric flow rate with the first orifice and then use a second orifice to change the velocity of discharge into the gas/air mixing venturi of the burner and therefore have adjustability of gas air mixing conditions without having to change the burner system or air flow control even when changing between very different fuel gases.

A gas furnace according to an embodiment of the present disclosure includes: a mixer for mixing air and a fuel gas, which are introduced through an intake pipe and a manifold, respectively, to form a mixture; a mixing pipe through which the mixture, having passed through the mixer, flows; a burner assembly for producing a combustion gas by burning the mixture having passed through the mixing pipe; and heat exchangers through which the combustion gas flows, wherein the burner assembly includes: a plurality of burners, to which a flame produced during combustion of the mixture is anchored; a mixing chamber serving as a medium for delivering the mixture from the mixing pipe to the burners. Accordingly, a full premixing mechanism may be provided, and a mixing rate of the fuel gas and the air may be maximized, thereby greatly reducing nitrogen oxide emissions. Further, the burner assembly includes a uniform guide disposed inside the mixing chamber and allowing the mixture to be uniformly distributed to each of the plurality of burners, thereby preventing an increase in local flame temperature, and greatly reducing nitrogen oxide emissions.

Disclosed are a fuel nozzle assembly, and a fuel nozzle module and gas turbine having the same. The fuel nozzle assembly includes a fuel nozzle, a shroud spaced apart from the fuel nozzle and defining a flow path between an inner wall and the fuel nozzle, a rim formed around the shroud to guide air, and a turning guide spaced apart from the rim to distribute the air. The turning guide includes a turning separator spaced apart from the rim to extend in a circumferential direction of the rim, and inner separators extending in a radial direction of the rim to interconnect opposite circumferential ends of the turning separator and an outer surface of the fuel nozzle. The fuel nozzle assembly prevents air pockets, and ensures uniform supply of air, thereby preventing a local increase in combustion temperature inside the fuel nozzle and reducing generation of NOx.

An apparatus and method for using the Venturi effect to introduce a controllable amount of ambient air into the combustion cycle for a flameworking torch, thereby raising or lowering the flame temperature at the torch head, is disclosed. The apparatus includes a control valve to adjust the flow of the ambient air so as to offer control over the actual temperature of the flame during the flameworking and fabrication cycle in multiple application environments, including glassworking.

An injet for a gas burner includes a first gas orifice and a second gas orifice. An injet body defines an air passage and a gas passage. The first and second gas orifices are mounted to the injet body. A pneumatically actuated gas valve blocks a flow of gaseous fuel through the gas passage to the second gas orifice in a closed configuration. The pneumatically actuated gas valve is configured to adjust from the closed configuration to an open configuration in response to a flow of air through the air passage. A flow restriction body is disposed upstream of the pneumatically actuated gas valve. The flow restriction body defines a through hole via which air is flowable to pneumatically actuated gas valve.

An assisted flare apparatus and method which increase the amount of air which is inducted into each of the flare combustion tip assemblies used in the apparatus by injecting the steam or other assist media used in each tip assembly into an inner conduit of the tip assembly which is configured such that at least a lower portion of the inner conduit is in the form of a venturi flow structure in which a straight venturi flow section is followed by a diverging venturi bell outlet section.

Provided are a burner and a water heater. The burner comprises multiple flame splitters, and each of the flame splitters is provided with at least three ejector pipes, and the multiple flame splitters are arranged parallel to one another; a fastener penetrates through the multiple flame splitters and connects the multiple flame splitters into a flame row; and compressing members are arranged at end parts where the fastener extends relative to the flame row, and the compressing members compress the flame row. The burner is integrally installed, easy to operate and firmly fixed, the combustion intensity can also be increased, the emission of nitrogen oxides is reduced, and the safety of use is ensured.

A gas burner for a household appliance includes a burner housing having a mixing chamber for mixing fuel gas with primary air, a gas nozzle accommodated in the burner housing and configured to inject the fuel gas into the mixing chamber, and an annular first primary air inlet provided between the gas nozzle and the mixing chamber for drawing in the primary air. The gas nozzle has a second primary air inlet which is guided through the nozzle for drawing in the primary air. The second primary air inlet is configured in a direction of flow of the primary air through the second primary air inlet to taper at least once and to widen out again. The gas nozzle has an annular fuel gas outlet opening which opens directly into the second primary air inlet.