Burners

Claim 2

In the art of combusting flammable fluid fuel for creating heated gas, the method steps which are characterized by: i. initially projecting a relatively long tongue of ignited fuel longitudinally from a source to a principal burning zone remote from said source, ii. causing an opposite, counterflow of a part of said tongue back towards said source, the originating location of said counterflow being between said source and said principal burning zone, iii. reintroducing said counterflow back into said tongue near said source, iv. causing the flame of said tongue to be extinguished when a sufficient rise in ambient temperature has supervened, and substantially simultaneously therewith v. causing the generation of a blue flame at the said originating location of counterflow, and at said principal burning zone, and vi. introducing sufficient air to meet the requirements aforesaid, said burning zone being further from said source than said originating location of counterflow.

Claim 3

The method according to claim 1 which includes the step of admitting additional counterflow air to mix with said first mentioned counterflow.

Claim 4

The method according to claim 1 which is effected within a surrounding combustion chamber and which includes the steps of: i. admitting additional counterflow air to mix with said first mentioned counterflow, and ii. admitting air to said combustion chamber from a location near said source to mix with said tongue of ignited fuel within said combustion chamber.

Claim 5

A fluid fuel burner embodying an inner burner tube, a surrounding jacket, said tube and said jacket each having a first end and adjacent second ends, said jacket being spaced from said tube, a fuel nozzle assembly, an ignition electrode and sufficient air intake means, the foregoing being characterized by including: i. a burner head, on the first end of said tube, ii. means for providing a counterflow of ignited fuel through a counterflow chamber existing between and by virtue of said tube and said jacket, said counterflow being opposite in direction to the flow of, and consisting of a portion of, a tongue of flammable fluid projecting through said tube from said nozzle assembly iii. the originating location of said counterflow being between said nozzle assembly and said burner head iv. means for reintroducing said counterflow back into said inner tube near said nozzle assembly, and v. means for causing the flame of said tongue to be extinguished when a sufficient rise in ambient temperature has supervened, and substantially simultaneously therewith thereby causing the generation of a blue flame at the said originating location of counterflow, and at a principal burning zone, said burning zone being further from said nozzle assembly than said originating location of counterflow.

Claim 6

A fluid fuel burner embodying an inner burner tube, a surrounding jacket, said tube and said jacket each having a first end and adjacent second ends, said jacket being spaced from said tube, a fuel nozzle assembly, an ignition electrode and sufficient air intake means, the foregoing being characterized by including: i. a burner head, on the first end of said tube, ii. means for providing a counterflow of ignited fuel through a counterflow chamber existing between and by virtue of said tube and said jacket, said counterflow being opposite in direction to the flow of, and consisting of a portion of, a tongue of flammable fluid projecting through said tube from said nozzle assembly iii. the originating location of said counterflow being between said nozzle assembly and said burner head iv. means for reintroducing said counterflow back into said inner tube near said nozzle assembly, and v. means for causing the flame of said tongue to be extinguished when a sufficient rise in ambient temperature has supervened, and substantially simultaneously therewith thereby causing the generation of a blue flame at the said originating location of counterflow, and at a principal burning zone, said burning zone being further from said nozzle assembly than said originating location of counterflow.

Claim 7

A fluid fuel burner embodying an inner burner tube, a surrounding jacket, said tube and jacket each having a first end and adjacent second ends said jacket being spaced from said tube, a fuel nozzle assembly, an ignition electrode and sufficient air intake means, the foregoing being characterized by including: i. a burner head on the first end of said tube ii. first and second end walls for said jacket providing a counterflow chamber therebetween surrounding said inner tube, said inner tube admitting fuel at said second end and discharging it at said first end, iii. said second end wall extending between said jacket and inner tube adjacent said nozzle assembly iv. said inner tube being vented to an external side of said chamber at the first end of said jacket, v. said first end wall being predominantly imperforate but sufficiently apertured as to permit a limited volume of counterflow air into said surrounding chamber vi. said inner tube being of greater length than said jacket and projecting through an aperture provided therefor in said first end wall, vii. said inner tube providing communication with said chamber adjacent both said end walls for the counterflow and reintroduction respectively, to said inner tube of products of combustion burnt within said inner tube, viii. said burner head being upon the first end portion of said inner tube which end projects through said first end wall to said external side of said chamber.

Claim 8

A fluid fuel burner embodying an inner burner tube, a surrounding jacket, said tube and jacket each having a first end and adjacent second ends said jacket being spaced from said tube, a fuel nozzle assembly, an ignition electrode and sufficient air intake means, the foregoing being characterized by including: i. a burner head on the first end of said tube ii. first and second end walls for said jacket providing a counterflow chamber therebetween surrounding said inner tube, said inner tube admitting fuel at said second end and discharging it at said first end, iii. said second end wall extending between said jacket and inner tube adjacent said nozzle assembly iv. said inner tube being vented to an external side of said chamber at the first end of said jacket, v. said first end wall being predominantly imperforate but sufficiently apertured as to permit a limited volume of counterflow air into said surrounding chamber vi. said inner tube being of greater length than said jacket and projecting through an aperture provided therefor in said first end wall, vii. said inner tube providing communication with said chamber adjacent both said end walls for the counterflow and reintroduction respectively, to said inner tube of products of combustion burnt within said inner tube, viii. said burner head being upon the first end portion of said inner tube which end projects through said first end wall to said external side of said chamber.

Claim 9

The invention according to claim 5 in which said communication between said inner tube and said chamber adjacent the first end wall thereof is in the form of an annular band comprised of a multiplicity of apertures in said inner tube.

Claim 10

The invention according to claim 6 in which said communication between said inner tube and said chamber adjacent the second end wall thereof includes an annular space between the second end of said tube and said second end wall.

Claim 11

The invention according to claim 6 in which said communication between said inner tube and said chamber adjacent the second end wall thereof is in the form of an annular band comprised of a multiplicity of apertures in said inner tube.

Claim 12

The invention according to claim 8 in which said communication between said inner tube and said chamber adjacent the second end wall thereof also includes an annular space between the adjacent end of said tube and said second end wall.

Claim 13

The invention according to claim 9 which is also characterized by the provision of an air intake aperture in said second wall, a frustoconical funnel secured to the rim of said aperture substantially on the vertex plane thereof, said fuel nozzle assembly and said igNition electrode projecting into said funnel.

Claim 14

The invention according to claim 10 in which said burner is secured to and projects inwardly from the wall of, a combustion chamber, and adjustable means on the external side of said wall for varying the admission of combustion supporting air to the interior of said combustion chamber and into said funnel through venting in said wall upon the outer side of said jacket.

Claim 15

The invention according to claim 5 which is also characterized by including a multiapertured air-distributing plate on the counterflow chamber side of said first end wall, slightly spaced therefrom.

Claim 16

The invention according to claim 9 which is also characterized by including a multiapertured air-distributing plate on the counterflow chamber side of said first end wall, and slightly spaced therefrom.

Claim 17

The invention according to claim 5 in which said burner head is characterized by being secured to the fuel discharge end of said inner tube, said head being in the form of an outflared and rimmed head formation, and at least one multiapertured fuel jet plate spanning said rim.

Claim 18

The invention according to claim 10 in which said burner head is characterized by being secured to the first end of said inner tube, said head being in the form of an outflared and rimmed head formation and at least one multiapertured fuel jet plate spanning said rim.

Claim 19

The invention according to claim 5 in which said burner head is characterized by being secured to the first end of said inner tube, said head being in the form of an outflared and rimmed head portion, and a pair of closely spaced and parallel, multiapertured fuel jet plates spanning said rim, said burner in situ being axially horizontal with said inner tube horizontal and said burner head generally right-angularly disposed with said inner tube axis so that said head formation opens upwardly with the rim thereof lying in a horizontal plane.

Claim 20

The invention according to claim 10 in which said burner head is characterized by being secured to the first end of said inner tube, said head being in the form of an outflared and rimmed head portion, and a pair of closely spaced and parallel multiapertured fuel jet plates spanning said rim, said burner in situ being axially horizontal, with said inner tube horizontal and said burner head generally right-angularly disposed with respect to said inner tube axis so that said head formation opens upwardly with the rim thereof lying in a horizontal plane.

Claim 21

The invention according to claim 6 which is also characterized by including a multiapertured air-distributing plate on the counterflow chamber side of said first end wall, and slightly spaced therefrom.

Claim 22

The invention according to claim 6 in which said communication between said inner tube and said chamber adjacent the second end wall thereof includes an annular space between the adjacent end of said tube and said second end wall.

Claim 23

The invention according to claim 19 in which said burner is secured to and projects inwardly from the wall of, a combustion chamber, and adjustable means on the external side of said wall for varying the admission of combustion-supporting air to the interior of said combustion chamber and into said counterflow chamber.

Claim 24

The invention according to claim 3 which includes the step of preventing the reignition of said tongue by said counterflow after it has been vaporized by said temperature rise and extinguished.

Claim 25

The invention according to claim 4 which includes means for preventing the reignition of said tongue by said counterflow after it has been vaporized by said temperature rise and extinguished.

Claim 26

The invention according to claim 5 which includes flame arrestor means in said counterflow chamber for preventing the reignition of said tongue by said reintroduced products of combustion after said tongue has been vaporized by said temperature rise and extinguished.

Claim 27

The invention according to claim 12 which includes an annular apertured flame Arrestor plate spanning said counterflow chamber between said tube and said jacket, said plate being relatively near the second ends of said tube and jacket, said plate preventing the reignition of said tongue by said counterflow after it has been vaporized by said temperature rise and extinguished.