US1630139A - Hydrocarbon burner - Google Patents

Description

1,630,139 May ,2 H. A. SEKOWSKY HYDROCARBON BURNER Filed May 11. 1925 INVENTOR.

A TTORNEYS Patented May 24, 1927.

"UNITED s r res nnnmAnn A. SEKOWSKY, or MILWAUKEE, Wisconsin."

HYDBOCARBQN Brianna Application filed- May 11,

My invention relates to improvements in hydro-carbon burners.

Objects of my invention are, to provide a form of construction having a minimum number of parts consistent witheificiency', to

provide an improvedform of burner composed of but two relatively adjustable pieces of cast metal mounted in common upon a depending'axially disposed fuel'duct, to provideimproved means for vaporizing'liquid' hydrocarbon, to providemeans' for ensur-- ing uniform pressure of the-combustible va-' por at the burner outlets, and to provide im-' proved means for introducti'n'g water vapor into the combustible mixture to promote combustion and prevent carbonization of the walls of the fuel ducts.

In the drawings: Figure 1 is an elevation, partly in vertical sect-ion, of a hydrocarbon burner em I bodying my invention.

Figure 2 is a plan view of the lower member of the'burner with the upper member and fuel duct removed.- V

Like parts are-identified by the same reference characters inboth views. The lower member of the burner is formed with'a conically tapered wall 1 encircled by an, outwardly and upwardly extending flange '2'which forms an annular channel'or' trough 3. The space between the upper margins or portions of the wall 1 is spanned by a spider-shaped fuel distributing mem bet-comprising a central hub 4' and a series of radial tubular armsj5 providing fuel distributingpassagesG. Each arm is provided on its upper side with an enlargement or stud-shaped projection 7 having an'obliquely disposed port 8 adapted to allow air toenter the passage 6. Theseports 8f extend downwardly and outwardly in the' direction of the delivery end of the passages G'and allow the air which passes through them to mingle with the hydrocarbon vapor near theoutlet of each passage, whereby a so-called rich mixture of combustible fuelmay' be'delivered. A1 tubular fuel pipe 9 is'exteriorly' screw-threaded and extends downwardly into the hub 4,'the upper portion of the hub being preferablythreaded and tapered to receive the threaded and tapered end portion 10 of the fuel duct. The lower endiof the hub is closed bya threaded plug 11, and the space. between this plug'andflthe lower end of the tube 9"constitutes a fueldist'ribu't- 1925. Se'rial'No. 29,399;

ing cavity 12 in communication with the" passages 6 in the spiderarms.

A bell or semi-spherical cap piece 13 is 5 provided with a central aperture, the walls of which are threaded to receive the upper" threaded portion 'of the fuel tube 9. The

lower marginal portion of the bell 13 ex tends downwardly in a substantially vertical direction over the central portionof the channel 3. By rotating the bell 13 upon itsscrew-threaded connection with the fuel tube 9 it -may be raised or lowered andthus' adjust it to'the requirements ofthe burner, either-t0 regulate combustion or todirect the flame outwardly or inwardly. By moving the bell 13 downwardly the flame may be caused to encircleit and to converge above'it. By adjusting the bell upw'ar the flame may be directed outwardly and caused to spread over aconsidera'bleareain the bowl-shaped combustion zone.

Liquid'hydrocarbon may be supplied to the burner from a duetQO through the-vertical pipe 21 andthe horizontally extending pipe 22 with which the vertically disposed tubular duct 9' is connected bya T coupling 23, the outer end of which is connected with a tubular member 24" having a-cap 25 and adapted toserve as an accumulator to= rega vapor to tli'e" late the flow of combustible burner. I have found that a substantially' uniform pressure can be obtained in the" pas sages ornozzles 6 by employing this acc'u'- mulator tube24, whereas-, if this tube is omitted, a considerable variationin pressure existsin the" passages 6" whichgresults in a marked fli'ictuation in the flame.

The vertical pipe 21 is preferably connected with the horizontal pipe 22 bya -T-shaped coupling 27, the outer end of which is connected with a vapor supply duct having an .elbowed' portion 28: provided with a nozzle 29." Thewater tank 30 is provided with an outlet drip valve 31 which allows a slow delivery of water into the loopedfpipe 32; the

latter having an upwardly extending pipe 33 leading to the elbowed noz'zle receiving' member 28. The nozzle is adapted to deliver thewa'ter into thep p gg'substa'ntiauy the outlet of the vertical fuel pipe 21, pref erably in the direct path of the fuel as it passes from the pipe 21 into the pipe 22.- A jacket 36" encloses'the pipe 21 and theportion 33 of the pipe loop above described to prevent overheating the contents of'these' pipes. This jacket may, of course, be omitted if the distance of these pipes from the burner is increased.

An overflow pipe l0 leads downwardly from the top of a tubular stud 41in the channel 3. whereby if the flames should be come accidentally extinguished, liquid hydrocarbon accumulating in the channel 3 is allowed to pass through this pipe and be delivered into areceptacle 4? suspended from a valve lever 43 connected with a shut-oll valve at 44- in such a manner that when a predetermined quantity of hydrocarlujm is delivered into the receptacle 4%, its weight will be suflicient to close the valve at -l-l and cut ofl' further delivery of hydrocarbon to the burner. A hand control valve is also indicated at This may be closed or opened by means of a hand wheel l6.

A fuel supply pipe 47 is adapted to deliver combustible fuel to a pilot burner 18. A manually adjustable valve 49 controls delivery of this fuel. lVhere combustible gas is available the pipe 47 will be used to convey such gas to the pilot burner instead of attempting to maintain combustion at this burner by supplying liquid hydrocarbon thereto.

It will be observed that the pipe 22 and its extension 24 extend diametrically across the combustion area, or at least across the major portion of the combustion area, and in such proximity to the burner that the fuel in the pipe 22 may readily be vaporized. The two upper and lower burner members may be composed of cast metal with walls of substantial thickness which store and distribute heat to the vapor, whereby when the burner is in operation the vapor is uniformly raised to a high temperature which promotes combustion and causes a rapid flow of air through the central cavity 50 and betwcen'the spider arms 5 into the upper cavity within the bell 13. This air is also raised to a high temperature and the bell directs its flow outwardly and downwardly from the space around the tube 9 across the outlets of the ducts 6, thereby furnishing an adequate supply of air to the combustible vapor delivered through said ducts. Owing to the mixture of the hydrocarbon vapor with the air ontering the passages 6 through the ports 8 a prompt intermingling of the hydrocarbon vapor with the additional air distributed by the bell is assured. Ignition takes place at or near the nozzle outlets and the bell 00- operates with the channel walls in providing proper flame distribution.

The burner may be supported from a platform 52 by a base plate 58 or if desired, it may be suspended from the pipe 22, in which event the latter will of course be adequately connected with any convenient support.

I claim:

1. A hydrocarbon burner comprising a hollow tapered member provided with an annular encircling channel and a spidershaped top portion having radially extending ducts, a fuel supply pipe leading downwardly into the spider-slniped top portion and communicating with said radial ducts, a bell-shaped regulating member having threaded engagement with said fuel supply pipe and vertically adjustable llnloult. the lower margin of said bell-shaped member being disposed above said annular channel, and means for supplyinghvdrocarbon fluid to said pipe across the heated zone produced by burning fuel escaping from beneath said b ll.

2. In a hydrocarbon burner the combination of adjustably connected upper and lower members, the lower member having radially extending fuel ducts in its upper portion and having its lower portion surrounded by an annular channel, said upper member being generally bell-shaped in form with its lower margin in proximity to the central portion of said annular channel, and means associated with the lower member for admitting air to the fuel for delivery within the hell.

3. In a hydrocarbon burner, the combination with a mixing chamber having an open bottom and a bell top, of an air passage having its walls extending upwardly therein and ported for air delivery thereto, a trough shaped deflector having an open top in proximity to the margins of the mixing chamber and having its walls spaced therefrom to allow a free flow of burning gases from the mixing chamber downwardly into the deflector and upwardly to the space surrounding the bell, a retort for receiving heat from the burner flame and for conveying hydrocarbon fuel across said space to the top of the bell and downwardly to the interior of the bell. and means for distributing said fuel radially to the air within the bell to form a rich combustible mixture therein.

at. In a hydrocarbon burner, the combination with a dome, of a frustoconical member forming an air passage extending upwardly into said dome, a fuel supply pipe extending downwardly through said dome and dividing into radial fuel ducts extending through said member and ported on the outer surface thereof substantially above the lower edge of said dome, and an annular channel below and in proximity to the edges of the dome, and means for adjustably mounting said dome upon said fuel supply pipe.

5. In a hydrocarbon burner, the combination with a dome, of a frusto conical member forming an air passage extending upwardly into said dome, a fuel supply pipe extending downwardly through said dome and dividing into radial fuel ducts extending through said member and ported on the outer surface thereof substantially above the lower edge of said dome obliquely disposed air ducts extending from said air passage to points within said fuel ducts near said ports, an annular channel below and in proximity to the edges of the dome, and means providing vertical adjustment of the dome in reference to said channel. a

6. In a hydrocarbon burner the combination with a spider-shaped fuel distributing member having radially extending ported arms and acentral hub, a fuel supply pipe connected with the upper portion of said hub, the lower portion of said hub being closed and'the central portion constituting a cavity in communication with the ports in said arms, each of said arms being also provided with an air inlet port adapted to allow an intermingling of air and fuel near the outlet end of the port.

7. In a hydrocarbon burner the combination with a burner member having radially extending ported arms, and means for supplying hydrocarbon vapor to the ports in said arms, each of said arms being also provided with an air inlet port extending obliquely through the Wall of said arm and communicating with the port therein near the point of fuel delivery therefrom.

8. In a hydrocarbon burner the combination with a burner member having radially ext-ending ported arms and means for supplying hydrocarbon vapor to the ports in said arms, each of said arms being also provided with an air inlet port extending obliquely through the wall of said arm and communicating with the port therein near the point of fuel delivery therefrom,'and a bell-shaped member covering said arms and extending downwardly over said outlets at a substantial distance therefrom.

9. In a hydrocarbon burner the combination with a burner member having radially extending ported arms and means for supplying hydrocarbon vapor to the ports in said arms, each of said arms being also provided with an air inlet port extendingobliquely through the wall of said arm and communicating with the port therein near the point of fuel delivery therefrom, and a bell-shaped member covering said arms and extending downwardly over said outlets at a substantial distance therefrom, together with means for adjusting said bell-shaped member to raise or lower the same with reference to said arms.

HERMANN A. SEKOWVSKY.

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