A supersonic combustor containing an injector module, a combustor core and an outer shell. The injector module houses both fuel and oxidizer nozzles. The combustor core contains grooves within which the combustion process takes place. The outer shell holds both the injector module and the combustor core and allows for other cooling, mounting and structural mechanisms required for operation.

A method and a device for reliably preventing undesired flashback or excessive separation/extinction of a pulsating flame for use in pulsed combustion reactors or pulsation reactors for thermal material treatment or thermal material synthesis is disclosed. The invention makes it possible to operate pulsed combustion reactors or pulsation reactors with thermal material treatment at markedly greater amplitudes of an oscillation of a hot gas flow in the reactor, and to improve the properties of the thermally treated/thermally synthesized material, and to markedly increase the throughput rates of the reactor (reactor capacity), and thus to reduce production costs in comparison to other thermal methods/apparatus for material treatment, and hence to make the pulsed combustion reactor technology or pulsation reactor technology more competitive. According to the invention, the invention uses a swirl burner to generate a swirl-stabilized flame, an essentially conical diffuser being connected downstream of the burner.

This invention refers to the energy sector and can be applied in heating systems, in particular in water heaters or boilers; in disposal systems operating on associated gas flaring. The pulsating combustion device comprises a combustion chamber and, connected thereto, an air and fuel gas supply unit and a flue duct. Said flue duct comprises at least one resonance pipe connected to the combustion chamber and at least two Helmholtz resonators located successively downstream of the at least one resonance pipe. Each of said resonators consists of a flue chamber and a flue pipe arranged downstream thereof, and natural resonance frequency of each of the Helmholtz resonators is less than combustion pulsation frequency. The invention allows to increase the pulsating combustion device efficiency with a simultaneous reduction of the noise level.

A flow control actuator includes a first side wall, a second side wall opposite and substantially parallel to the first side wall, an upstream wall mechanically coupled to upstream ends of the first and second side walls, and a downstream cap mechanically coupled to downstream ends of the first and second side walls. The first side wall, the second side wall, the upstream wall and the downstream cap collectively define an interior of the flow control actuator. An energy source is disposed in at least one of the first sidewall and the second sidewall. At least one fuel injector is disposed in the upstream wall, the first sidewall and/or the second sidewall for dispersing fuel into the flow control actuator. At least one air inlet is disposed in the upstream wall, the first sidewall and/or the second sidewall for introducing air into the flow control actuator. Fuel from fuel injector and air from the air inlet are ignited in the flow control actuator.

A flow control actuator includes a first side wall, a second side wall opposite and substantially parallel to the first side wall, an upstream wall mechanically coupled to upstream ends of the first and second side walls, and a downstream cap mechanically coupled to downstream ends of the first and second side walls. The first side wall, the second side wall, the upstream wall and the downstream cap collectively define an interior of the flow control actuator. An energy source is disposed in at least one of the first sidewall and the second sidewall. At least one fuel injector is disposed in the upstream wall, the first sidewall and/or the second sidewall for dispersing fuel into the flow control actuator. At least one air inlet is disposed in the upstream wall, the first sidewall and/or the second sidewall for introducing air into the flow control actuator. Fuel from fuel injector and air from the air inlet are ignited in the flow control actuator.

An implosion reactor tube is provided, including: a receptacle body having a tube shape open at a first end; a cylinder positioned within the receptacle body; a mixing chamber at a second end of the receptacle body; the mixing chamber defined by a baffle; the baffle having a plurality of inner passages proximate to the cylinder allowing fluid passage through the baffle and a plurality of outer passages proximate to the receptacle body allowing passage of air and fuel through said baffle; a fuel and air inlet for allowing the air and fuel to enter the mixing chamber; and a flash igniter for igniting the air and fuel.

A scalable pulse combustor that can be deployed as the heat exchanger in high efficiency, low NOx condensing boilers, water heaters and steam generators is provided. The combustor generally comprises an annular burner coil with a burner flange for accommodating the nozzle of a conventional burner/blower fitted into the central aperture thereof; a spaced-apart opposite annular spreader coil with a heat exchange hub fitted into the central aperture thereof; and a plurality of annular intermediate coils. Each of the burner, spreader and intermediate coils are preferably formed of spiral wound stainless steel tubing, with each winding directly abutting the preceding winding so as to create an annular wall. The heat exchange hub functions as a secondary heat exchanger with its own independently controllable coolant flow.

A pulsed detonation engine may include a detonation tube for receiving fuel and an oxidizer to be detonated therein, one or more fuel-oxidizer injectors for injecting the fuel and oxidizer into the detonation tube, one or more purge air injectors for injecting purge air into the detonation tube for purging the detonation tube, and an ignition for igniting the fuel and oxidizer in the detonation tube so as to initiate detonation thereof. The detonation tube has an upstream end, a downstream end, and an axially extended portion extending from the upstream end to the downstream end and having a perimeter. The fuel-oxidizer injectors and purge air injectors may be disposed at least along the axially extended portion. The ignition may include a plurality of igniters disposed at or near the perimeter of the axially extended portion, spaced about the perimeter, at or near the upstream end of the detonation tube.

An implosion reactor tube is provided, including: a receptacle body having a tube shape open at a first end; a cylinder positioned within the receptacle body; a mixing chamber at a second end of the receptacle body; the mixing chamber defined by a baffle; the baffle having a plurality of inner passages proximate to the cylinder allowing fluid passage through the baffle and a plurality of outer passages proximate to the receptacle body allowing passage of air and fuel through said baffle; a fuel and air inlet for allowing the air and fuel to enter the mixing chamber; and a flash igniter for igniting the air and fuel.