An internal combustion burner including a combustion chamber supplied with fuel and with oxidant and at least two combustion devices supplied with oxidant and with fuel. Combining two combustion devices of distinct configurations, which respectively generate two distinct types of flames with a system for cooling the walls of the burner by introducing air along the walls, makes it possible to obtain a burner that supplies a combustion gas temperature of up to 1700 C., while at the same time being easily cooled and occupying very little space so that it can, for example, be housed in an existing installation used in the manufacture of rock wool or glass wool.

An end apparatus (1) for a burner configured to generate a flame, comprising a supply conduit (5) for supplying a comburent and a combustion head (2) at least partially inserted into the supply conduit (5) so as to define a passage gap (9) between the combustion head (2) and the supply conduit (5) for a flow of comburent (C). In particular, the combustion head (2) comprises a plurality of outer openings (11), arranged outside the passage gap (9), configured to emit a first flow of fuel (F1) outside the flow of comburent and a plurality of inner openings (12) arranged at and/or inside the passage gap (9) adapted to introduce a second flow of fuel (F2, F2) inside the flow of a comburent.

A burner assembly includes a plurality of burners for mixing fuel and air. Each of the plurality of burners includes: at least one fuel nozzle for injecting the fuel; and a mixing passage into which the fuel injected from the at least one fuel nozzle and the air are introduced. Each of the at least one fuel nozzle includes a protruding portion protruding upstream of an inlet of the mixing passage in a flow direction of the air. Each of the at least one fuel nozzle includes at least one fuel injection hole formed on a side surface of the protruding portion. A top surface of the protruding portion includes a convex curved surface.

A cylindrical burner apparatus and method which produce low noise levels and are not dependent upon a blower, or natural draft, for providing combustion air flow. A flow of combustion air is induced into a rearward end of a burner tube and a swirling flame is produced in the tube by discharging a gas fuel from a plurality of discharge ports located in the tube.

An outdoor invisible-ignition burner comprises a furnace which is circumferentially enclosed, wherein a porous ceramic plate is disposed at the top of the furnace and is fixedly mounted at an opening in the top of the furnace through a decoration ring, an ignition needle connected with a high-tension ignition wire is fixed on an outer wall of the furnace, a jet tube is disposed in the furnace, one end of the jet tube stretches out of the furnace and is connected with a main gas tube through a main nozzle, an auxiliary nozzle is mounted at the bottom of the furnace and stretches into the furnace, a gas outlet end of the auxiliary nozzle is located below the ignition needle, and a gas inlet end of the auxiliary nozzle is connected with a side wall of the main nozzle through an auxiliary gas tube.

A burner apparatus and method of operating the burner apparatus include a burner housing, and a group of fuel and air swirlers maintained by the burner housing, with the group of fuel and air swirlers supplied by a common fuel and air source. The fuel and air can be directed to one or more of the fuel and air swirlers at a time. Each fuel and air swirler among the group of fuel and air swirlers can mix the fuel and the air, resulting in a combustible mixture of the fuel and the air downstream of the group of fuel and air swirlers. The burner apparatus be implemented as a low NOx multi-port burner apparatus.

A radiant tube burner, wherein an opening cross section of the tube is virtually divided into four areas with two straight lines as boundaries, the two straight lines being obtained by tilting a minor axis of the oval, which is a shape of the opening cross section, by 45 with a center of the oval as a center, and a flow rate of primary combustion air injected from primary combustion air nozzles located in the areas containing the minor axis of the oval of the virtually divided four areas is lower than a flow rate of the primary combustion air injected from the primary combustion air nozzles located in the areas not containing the minor axis of the oval the four areas.

A burner body for a gas burner with complete-premixing and modulable power, including: one inlet opening for the inflow of an air and fuel gas mixture; a plurality n of outlet openings on the surface of said burner body, adapted to allow the outflow of the air and fuel gas mixture; at least one movable element for varying the number of the outlet openings in communication with the inlet opening; a plurality n of chambers delimited by fixed partition walls inside the burner body and by portions of the outer wall thereof, each of the chambers being in communication with the inlet opening and in communication with a part of the plurality n of outlet openings; n1 movable elements positioned upstream of n1 chambers and downstream of the inlet opening, adapted to open and close the communication between the inlet opening and the plurality n of outlet openings.