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A burner for gaseous or liquid fuel for heating furnaces includes a ceramic combustion chamber (20) for incomplete combustion of the fuel with primary air from which hot gases exit at high velocity through a constricted outlet (24). The combustion chamber is surrounded by a chamber (42) for the preh

A burner for gaseous or liquid fuel for heating furnaces includes a ceramic combustion chamber (20) for incomplete combustion of the fuel with primary air from which hot gases exit at high velocity through a constricted outlet (24). The combustion chamber is surrounded by a chamber (42) for the preheated remainder air necessary to complete combustion. Out of this chamber high velocity jets of air issue through nozzle openings encircling the combustion chamber outlet. Energy is saved and simple construction maintained by providing a tubular heat recuperator (4, 7, 9) rearwardly of the combustion chamber in which a cylindrical wall of temperature resistant steel passes to separate the recuperator into two annular chambers (10,11) and extends forward over a large part of the axial length of the combustion chamber so as to form an outer boundary of the remainder air chamber. The forward extension of the cylindrical wall (9) has an inturned rim constituting the ring-shaped nozzle carrier (33) in which the nozzle openings for the remainder air jets are provided. The combustion chamber is clamped between its spring-loaded fuel pipe (16) and the nozzle carrying rim (33) of the cylindrical wall (9).

대표청구항 ▼

Industrial burner, for use with gaseous or liquid fuel comprising a ceramic combustion chamber having inlets for primary comprising air and means for supplying to the chamber and igniting a flow of fuel, said chamber also having constricted outlet means for discharge of hot partly burned gas, a rema

Industrial burner, for use with gaseous or liquid fuel comprising a ceramic combustion chamber having inlets for primary comprising air and means for supplying to the chamber and igniting a flow of fuel, said chamber also having constricted outlet means for discharge of hot partly burned gas, a remainder-air chamber surrounding said combustion chamber for preheated air necessary to complete the combustion of said fuel and nozzle openings disposed in a ring around said combustion chamber outlet means for discharging air from said remainder-air chamber in high velocity jets, and further comprising: a cylindrical wall (9) coaxial with and spaced from said combustion chamber, extending over at least part of the length of said chamber to laterally define said remainder-air chamber therewith and extending rearwardly of said combustion chamber; an annular nozzle carrier (33) connected to said cylindrical wall (9) closing off the forward end of said remainder-air chamber, having nozzle openings therein for forming said high velocity remainder air jets and against which said combustion chamber bears for support, and means (30) for exerting elastic force in an axial direction on said combustion chamber for clamping said combustion chamber against said nozzle carrier (33).