Abstract: A Vortex burner is provided in a burner block having a conduit spaced within the burner block passageway to provide an annular space between them. Fuel gas flows through the central portion of the burner, and is tangentially discharged through gas nozzles. Primary air is induced through the portion of the burner surrounding the fuel gas inlet means. Secondary air is induced into the burner through the portion of the burner surrounding the primary inlet means via draft. A deflector member disposed at a suitable angle to the primary air conduit and protruding from the discharge end of said conduit, directs the secondary air along the cup surface and causes it to mix with the partial premixture of primary air and gas. The deflector member aerodynamically directs the primary air and gas premixture along the cup surface. The secondary air flow prevents annular recirculation of hot gases.

Abstract: In a burner mountable in a passageway leading into a furnace including a housing received by said passageway, having a discharge end opening into said furnace, a first conduit within said housing, a second conduit within said first conduit, said housing, said first conduit and said second conduit being annularly spaced, means for introducing respective fuels into space between said first and second conduits and into said second conduit, means for introducing air into space between said housing and said first conduit, fins for inducing swirling motion of air discharged from said housing into said furnace, means for discharging respective fuels from said first and second conduits into said furnace through said housing discharge end, the housing discharge end extending into the furnace interior, a sleeve receiving the first conduit therewithin and extending forwardly therefrom, a cap having an inwardly facing lip about a discharge end of the sleeve proximate the housing opening the lip defining a discharge throu

Abstract: A vortex burner includes a first feed pipe and a second feed pipe disposed within the first feed pipe. A first set of gas distribution tubes extends from an end of the first feed pipe and extends towards a radiant cup portion of the vortex burner. Also, a second set of gas distribution tubes extends from the second feed pipe also toward the radiant cup portion of the vortex burner. A first fuel gas is capable of flowing through a portion of the first feed pipe not occupied by the second feed pipe, i.e. an annulus area of space, and through the associated first set of gas distribution tubes. A second fuel gas, of either a higher or lower Wobbe index than the first fuel gas is capable of flowing through the second feed pipe and its associated second set of gas distribution tubes. Thus, the vortex burner is capable of burning either high or low Wobbe fuel gases. The first and second fuel pipes may also be separately disposed within the vortex burner.