Abstract:
A combustion system includes a perforated flame holder, a preheating fuel distributor, a main fuel distributor, an oxidant source, an array of sensors, and a controller. The oxidant source outputs an oxidant. The preheating fuel distributor supports a preheating flame configured to preheat the perforated flame holder by outputting a preheating fuel when the combustion system is in a preheating state. The main fuel source outputs a main fuel in the standard operating state. The perforated flame holder is configured to support a combustion reaction of the main fuel and the oxidant in the standard operating state. The sensors are configured to sense parameters of the preheating flame and the perforated flame holder and to output sensor signals to the controller. The controller executes software instructions that include adjusting the flow of the main fuel, the preheating fuel, and the oxidant responsive to the sensor signals.
Abstract:
A combustion system includes a fuel distributor configured to output a fuel, an oxidant source configured to output an oxidant, and a mixing tube defining a mixing volume aligned to receive the fuel and oxidant. The mixing tube is shaped to convey the fuel and oxidant through the mixing volume at a bulk velocity higher than a flame propagation speed. The combustion system includes a perforated flame holder aligned to receive the mixed fuel and oxidant and to support a combustion reaction of the fuel and oxidant.
Abstract:
A combustion system includes a perforated flame holder and a plurality of bluff body members positioned between the perforated flame holder and a fuel source. The fuel source outputs a fuel stream through gaps between the bluff body members toward the perforated flame holder. The perforated flame holder and the bluff body members collectively hold a combustion reaction supported by the fuel stream.
Abstract:
Embodiments disclosed herein are directed to methods of upgrading a conventional combustion system into an upgraded combustion system that includes a perforated flame holder. For example, the perforated flame holder may improve operational efficiency of the combustion system and/or reduce pollutants such as NO x output by the upgraded combustion system.
Abstract:
Brûleur à gaz comprenant une tête de brûleur Brûleur à gaz(1)comprenant une chambre de mélange(5); une tête de brûleur(19)pourvue d'une pluralité d'ouvertures(22)en communication fluidique avec l'extérieur, la tête de brûleur(19)constituant une partie de la paroi de la chambre de mélange(5), la tête du brûleur(19)comporte:un trou central(18); une première zone(23) comprenant des ouvertures dont la dimension est comprise entre 0,8 et 1, mm; une deuxièmezone(25) entourant la première zone(23) et comprenant des ouvertures dont la dimension est comprise entre 0,8 et 1,5 mm;une zone intermédiaire(31) annulaire pleine, située entre la première et la deuxième zone(25); la tête du brûleur comprenant en outre un épaulement(21) annulaire.
Abstract:
A burner (1) for oven or grill comprising a flat and elongated body (2) extending in a major longitudinal direction (3) and confining an inner chamber (4) adapted to receive a comburent/combustible mixture. The body (2) is formed with two half-shells (5, 6) mutually superposed and coupled in mirror image relationship and comprising edge portions (7) defining a coupling plane (8) of the two half- shells, A first series of flame holes (10) defines a first flaming front and a second series of flame holes (11) defining a second flaming front positioned at the coupling plane (8) of the two half-shells, on opposite sides of the inner chamber (4) and in communication therewith. The body (2) comprises a connecting portion (12) between the first flaming front and the second flaming front obtained at the coupling plane (8) of the two half-shells at an end of the inner chamber (4). The connecting portion is defined by respective connecting walls (13) of the two half- shells extending parallel to the coupling plane (8) in a sequence of depressions and elevations (15, 17) disposed between the first flaming front and the second flaming front and adapted to form flame transferring means.
Abstract:
Ein Mehrflammenbrenner mit brenngasbeaufschlagbaren Brennerdüsen (10 - 15), insbesondere für thermische Materialbearbeitungsverfahren, wird vorgeschlagen, bei dem wenigstens eine der Brennerdüsen (10 - 15) mit wenigstens einer seitlich einer Hauptdüsenanordnung (30) zur Erzeugung einer Arbeitsflamme (60,70) angeordneten Nebendüsenöffnung (40) zur Erzeugung einer Nebenflamme (80) in Richtung wenigstens einer benachbarten Brennerdüse (10 - 15) versehen ist.
Abstract:
A water heating device comprising (a) combustion means (20) for igniting a combustible mixture of air and gas for heating water; (b) heat exchanger means (10) including a combustion chamber (14), and a plurality of exchange tubes (16) connected to the bottom of the combustion chamber (14), the tubes (16) extending below the combustion chamber (14) and through the water chamber (12), such that the hot gases flow through the combustion chamber (14) and then through the tubes (16) in physical isolation from and in heat exchange relation with the water, and the water flows about the tubes (16) and then around the outside of the combustion chamber (14) in the counter flow to the hot gases; and (c) temperature control means (30) for controlling the temperature of the water, including thermal measuring means having a sensor for sensing the temperature of outgoing portions of the water, and controlling means responsive to the sensed temperature for controlling the rate of heat transfer between the fluids by modulating the flow of air and gas to the combustion means.