A totally aerated combustion burner has a combustion plate part through which an air-fuel mixture is ejected. The combustion plate part includes: an air-fuel mixture permeable body made from metallic fibers to allow the air-fuel mixture to pass therethrough; and a distribution plate having formed therein a multiplicity of distribution holes and being stacked on a back surface of the air-fuel mixture permeable body. An air-fuel mixture permeable body is constructed by laminating a plurality of metallic-fiber woven bodies which are woven by metallic-fiber threads obtained by bundling a plurality of metallic fibers relatively large in diameter. These metallic-fiber woven bodies are laminated such that a part of meshes in one metallic-fiber woven body overlaps a portion other than meshes in another metallic-fiber woven body, said one metallic-fiber woven body and said another metallic-fiber woven body that lies adjacent to each other in the laminating direction.

A method for the failsafe and lean ignition of a fuel gas-air mixture on a gas burner (6), which is mixed in a mixing device (4) arranged upstream of the gas burner (6). A control valve (2) along the fuel gas flow path has an actuator (21) and a throttle element (23), moved by the actuator (21), for the closed-loop control of a flow rate of the fuel gas flowing into the mixing device (4). A test is performed to determine whether the throttle element (23) is in the throttle reference position when the actuator (21) is in the actuator reference position. The throttle element (23) is moved in a flow rate-increasing manner starting at a start time (tD). The flow rate-increasing movement of the throttle element (23) is stopped as soon as at least one of multiple predetermined termination conditions occurs.

A method for the failsafe and lean ignition of a fuel gas-air mixture on a gas burner (6), which is mixed in a mixing device (4) arranged upstream of the gas burner (6). A control valve (2) along the fuel gas flow path has an actuator (21) and a throttle element (23), moved by the actuator (21), for the closed-loop control of a flow rate of the fuel gas flowing into the mixing device (4). A test is performed to determine whether the throttle element (23) is in the throttle reference position when the actuator (21) is in the actuator reference position. The throttle element (23) is moved in a flow rate-increasing manner starting at a start time (tD). The flow rate-increasing movement of the throttle element (23) is stopped as soon as at least one of multiple predetermined termination conditions occurs.

A direct flame furnace burner unit for furnaces for the thermo-chemical treatment of steel strips in continuous hot-dip galvanizing plants includes a burner with a combustion head provided with a combustion chamber having an outlet opening of the combustion flame, and a body to which the combustion head is fixed. The body includes a first chamber which is in communication with the combustion chamber, a first lance for the injection of a fuel into the combustion chamber, a mixing chamber provided with at least a first inlet and a second inlet opening which is connectable to a second supply source, at least a second lance for the injection of the mixture into the combustion chamber. The burner is operable in two distinct operating modes, a diffusive flame combustion mode and a premixed flame combustion mode.

A direct flame furnace burner unit for furnaces for the thermo-chemical treatment of steel strips in continuous hot-dip galvanizing plants includes a burner with a combustion head provided with a combustion chamber having an outlet opening of the combustion flame, and a body to which the combustion head is fixed. The body includes a first chamber which is in communication with the combustion chamber, a first lance for the injection of a fuel into the combustion chamber, a mixing chamber provided with at least a first inlet and a second inlet opening which is connectable to a second supply source, at least a second lance for the injection of the mixture into the combustion chamber. The burner is operable in two distinct operating modes, a diffusive flame combustion mode and a premixed flame combustion mode.

An inlet assembly for an abatement apparatus includes: an effluent stream conduit configured to convey an effluent stream along a major direction of flow within the effluent stream conduit; an inlet nozzle fluidly coupled with the effluent stream conduit and configured to convey the effluent stream received from the effluent stream conduit to an abatement chamber of the abatement apparatus; and a baffle interposed between the effluent stream conduit and the inlet nozzle, the baffle being shaped and configured to redirect flow of the effluent stream from the effluent stream conduit into the inlet nozzle by inhibiting effluent stream flow along the major direction of flow into the inlet nozzle. A line-of-sight flow from the effluent stream conduit into the inlet nozzle is prevented by the baffle and the effluent stream instead follows a non-line-of-sight or diversionary path from the effluent stream conduit into the inlet nozzle, which improves DRE.

An inlet assembly for an abatement apparatus includes: an effluent stream conduit configured to convey an effluent stream along a major direction of flow within the effluent stream conduit; an inlet nozzle fluidly coupled with the effluent stream conduit and configured to convey the effluent stream received from the effluent stream conduit to an abatement chamber of the abatement apparatus; and a baffle interposed between the effluent stream conduit and the inlet nozzle, the baffle being shaped and configured to redirect flow of the effluent stream from the effluent stream conduit into the inlet nozzle by inhibiting effluent stream flow along the major direction of flow into the inlet nozzle. A line-of-sight flow from the effluent stream conduit into the inlet nozzle is prevented by the baffle and the effluent stream instead follows a non-line-of-sight or diversionary path from the effluent stream conduit into the inlet nozzle, which improves DRE.

Methods and related systems for operating a furnace are disclosed. In an embodiment, the method includes activating a burner assembly and a first fan of the furnace to combust fuel and air and circulate combustion gases along a flow path extending through a heat exchanger of the furnace. In addition, the method includes operating a second fan of the furnace to circulate air across an external surface of the heat exchanger of the furnace and produce a conditioned airflow. Further, the method includes monitoring one or more parameters of a motor of the second fan indicative of an airflow rate of the conditioned airflow, and deactivating the burner assembly, whereby combustion of the fuel and air in the furnace ceases, in response to the one or more parameters indicating that the airflow rate is less than a minimum airflow rate.

The present invention relates to a burner. At least one first passage, at least one second passage and a mixing chamber are formed in the burner, and the mixing chamber is respectively connected to an outlet of the first passage and an outlet of the second passage, so that a first fluid and a second fluid are mixed in the mixing chamber to form a fluid mixture; wherein the burner includes a nozzle, and at least one through passage fluidly connected to the mixing chamber is formed in the nozzle, so that the fluid mixture flows out from the at least one through passage, and wherein the sum of the sectional areas of the at least one through passage is smaller than the sectional area of the mixing chamber.

The present invention relates to a burner. At least one first passage, at least one second passage and a mixing chamber are formed in the burner, and the mixing chamber is respectively connected to an outlet of the first passage and an outlet of the second passage, so that a first fluid and a second fluid are mixed in the mixing chamber to form a fluid mixture; wherein the burner includes a nozzle, and at least one through passage fluidly connected to the mixing chamber is formed in the nozzle, so that the fluid mixture flows out from the at least one through passage, and wherein the sum of the sectional areas of the at least one through passage is smaller than the sectional area of the mixing chamber.