A locomotive (10) for spreading a waterproof coil in a hot melt manner. The locomotive (10) for spreading a waterproof coil in a hot melt manner comprises: a locomotive frame (11), provided with a coil support (12); and wheel devices, a spreading device, a combustion and heating device and a coil compaction device that are disposed on the locomotive frame (11). The combustion and heating device comprises a combustion chamber (6) and a mixing chamber (2). The mixing chamber (2) is provided with a fuel gas inlet end (5), an air inlet end (28), and an outlet end (29). The outlet end (29) is connected to the combustion chamber (6). Multiple gas discharge holes (7) are formed in one side surface of the combustion chamber (6) in an axial direction. The locomotive (10) for spreading a waterproof coil in a hot melt manner improves the construction efficiency, reduces human power costs and reduces consumption of fuel gas.

The present invention discloses a novel apparatus and way for directing a supply of compressed air into a fuel nozzle assembly for mixing with a fuel source. The apparatus comprises a fuel nozzle assembly having a plurality of coaxial tubes and radially-extending swirler vanes for directing a supply of fuel to a mixing tube. Compressed air is directed to flow in a primarily axial direction by passing through a hemispherically-shaped dome portion at an air inlet region of the fuel nozzle assembly. The hemispherically-shaped dome includes a plurality of openings for directing air into the fuel nozzle assembly in a direction having a radial and axial component.

The present invention discloses a novel apparatus and way for directing a supply of compressed air into a fuel nozzle assembly for mixing with a fuel source. The apparatus comprises a fuel nozzle assembly having a plurality of coaxial tubes and radially-extending swirler vanes for directing a supply of fuel to a mixing tube. Compressed air is directed to flow in a primarily axial direction by passing through a hemispherically-shaped dome portion at an air inlet region of the fuel nozzle assembly. The hemispherically-shaped dome includes a plurality of openings for directing air into the fuel nozzle assembly in a direction having a radial and axial component.

A compact burner for the pressurized gasification of pulverized fuel dust for producing synthesis gas, wherein a plurality of concentric media channels transition into a conical burner tip. The burner tip provides a reduced contact surface on the reaction chamber side. The nozzle components of the burner tip are produced by selective laser melting, which permits a design for cooling by supplied media, such as fuel gas, flushing gas, or oxidation. A sliding guide having an intermediate seal is arranged between the nozzle components of two media channels to equalize temperature-driven linear extensions. The compact burner makes the expense for liquid cooling unnecessary.

A compact burner for the pressurized gasification of pulverized fuel dust for producing synthesis gas, wherein a plurality of concentric media channels transition into a conical burner tip. The burner tip provides a reduced contact surface on the reaction chamber side. The nozzle components of the burner tip are produced by selective laser melting, which permits a design for cooling by supplied media, such as fuel gas, flushing gas, or oxidation. A sliding guide having an intermediate seal is arranged between the nozzle components of two media channels to equalize temperature-driven linear extensions. The compact burner makes the expense for liquid cooling unnecessary.

A premixing apparatus includes a mixing unit, an air supply adjusting unit, and a gas switching unit. The mixing unit draws a fuel gas in the mixing unit by supplied air to mix the fuel gas and the supplied air with each other. The air supply adjusting unit applies a load on the supplied air flowing toward the mixing unit and switches the load. The gas switching unit switches a gas amount of the fuel gas to be supplied to the mixing unit.

A premixing apparatus includes a mixing unit, an air supply adjusting unit, and a gas switching unit. The mixing unit draws a fuel gas in the mixing unit by supplied air to mix the fuel gas and the supplied air with each other. The air supply adjusting unit applies a load on the supplied air flowing toward the mixing unit and switches the load. The gas switching unit switches a gas amount of the fuel gas to be supplied to the mixing unit.

A gas burner may include a burner body, a first gas orifice, a second gas orifice, a mixed outlet nozzle, an injet body, a gas supply line, a secondary gas line, and a flow sensor. The first gas orifice may be directed towards a plurality of naturally aspirated flame ports. The second gas orifice may be spaced apart from the first gas orifice. The mixed outlet nozzle may be downstream from the second gas orifice and directed towards a plurality of forced induction flame ports. The injet body may define an air passage and a mixing chamber downstream from the air passage. The gas supply line may be mounted on the injet body. The secondary gas line may extend in fluid parallel to the first gas orifice. The flow sensor may be positioned in fluid communication with the secondary gas line to detect a flow rate of gaseous fuel therethrough.

A method for regulating a gas burner, wherein the gas burner has a combustion air supply fan whose rotational speed can be set variably, has the following steps: —operating the fan and detecting a fan rotational speed (nVBL); —changing the fan rotational speed; —measuring an ionization voltage (UION) which correlates with an ionization flow in a flame region of the gas burner; —finding a minimum of a gradient of the measured ionization voltage at the current fan rotational speed; —determining an operating point by measuring the current ionization voltage and storing as an operating point; —while the burner is operating, continuously measuring the current ionization voltage; —determining a deviation between the currently measured ionization voltage and the operating point; —checking whether the deviation (Delta UION) is within a predefined limit (UY) and carrying out a case differentiation: +if the deviation is within the predefined limit (UY), continuing the continuous measurement of the current ionization voltage; +if the deviation is not within the predefined limit (UY), repeating the method from the above change in the fan rotational speed.

A method for regulating a gas burner, wherein the gas burner has a combustion air supply fan whose rotational speed can be set variably, has the following steps: —operating the fan and detecting a fan rotational speed (nVBL); —changing the fan rotational speed; —measuring an ionization voltage (UION) which correlates with an ionization flow in a flame region of the gas burner; —finding a minimum of a gradient of the measured ionization voltage at the current fan rotational speed; —determining an operating point by measuring the current ionization voltage and storing as an operating point; —while the burner is operating, continuously measuring the current ionization voltage; —determining a deviation between the currently measured ionization voltage and the operating point; —checking whether the deviation (Delta UION) is within a predefined limit (UY) and carrying out a case differentiation: +if the deviation is within the predefined limit (UY), continuing the continuous measurement of the current ionization voltage; +if the deviation is not within the predefined limit (UY), repeating the method from the above change in the fan rotational speed.