US2021818A - Hydrocarbon vapor lamp or burner - Google Patents

Description

Nov. 19, 1935.

F. C. TILLEY HYDROCARB-ON VAPOR LAMP OR BURNER Fi'led March 17, 1934 INVENTOR B FREDERICK c. TILLE! Y 77W #{jaifim ATTORNEYS Patented Nov. 19, 1935 UNITED: STATES" or ies? ApplicationMarch'l'L 1934, Serial No. 3716,1511

InGreat Britain Manch..28, '1933:; 1

7 Claims.

This invention relatesto hydro-carbon. vapor lamps or burners, in which the fuel is forced up a vaporizing tube underpressure from. a tank, the fuel being vaporized by heat. as it passes :athrough the vaporizing tube and when vaporized mixed with air in' a mixingtubethe-mixture passing down to a burner outlet. oroutlets surrounding the vaporizing tube to impinge on the inside of an annular bag-shaped mantle sur- --rounding the vaporizing tube.

In such class of burner the air for mixing with the vapor has heretofore been introduced directly into the mixing tube. I have discovered this to be disadvantageous and it is therefore an .:'object of this invention to provide an improved burner, whereby the air for mixing with the vapor is heated before it is combined with the vapor, and a more convenient construction of burner attained.

vided or the burner so constructed that the air for mixingwith the vapor passes through the mantle, but not in contact with it, before it is mixed with the vapor, and such..means may conelst of an outermember encircling the vaporizing tube, formed or provided with an air passage or passages whereby the air enters the passage or passages and passes into an injector or mixing tube with the vapor from the vaporizing tube, the rmember being positioned beIQWthe-burneroutlet or outlets and preferably with a portion of its length within the mantle.

The invention will be clearly-understood from the following description aided by the annexed ?=drawing in which:-

Figure 1 is a sectional elevation of -.a burner constructed according to one example of carrying the invention into effect.

Figure 2 is a section on the lines II, II of Figure 1, and

Figure 3 a section on the lines III, III, also of Figure 1.

Figure 4 is a sectional elevation of a modified construction of burner, and

Figure 5 a section on the lines V, V, of Figure 4.

The invention can be carried into effect in a variety of ways as to detail construction, and one example is shown in Figures 1, 2 and 3 of the accompanying drawing applied to a burner of the type in which the mantle encircles the vaporizing tube. In this case the vaporizing tube is surrounded at part of its length (preferably within the area of the mantle) with a tubular member 2, having a series of passages 2a passing longitudinally through same, and a cen- According .to this invention, means are pro-- tralbore 2b, the; central bore 2b beingpositioned on .the vaporizing tube. 1 with the passages 2a disposed around the vaporizing tube I.

Above the. top end of thevaporizing tube l and the-tubular member 2, is an-injector tube 3,'and:1

enclosing. the injector tube 3 is a mixing tube or.

chamber, which may consist of a tube'4 having;

a dome shaped. closed top,:and such tube 4 leads to-the burner'outlets 5 within the .mantle fin.

The injector tube 3 is preferably formed withira conical bore 3a in astraight metaltube, the..out-' let end being rounded or curved as: at 317.

The various parts are detachably connected together. by suitable joints and fittings suchas by forming thepburner ring .1, having zthe burner.

outlets 5 with an internal screw. thread m on the insideofthe ring of outlets 5, an-din one face of the. ring?! into which. one end .of the tubular member-2 formed with an external screw thread.

can berengagedyand on the other face ofthe. ring.

l and within thecircleof openings Bis another 1 internal screw: thread .lb'into which one screw-.

threaded end of a short. tube. 8 vcanube engaged,

the other .endzof the tube 8 also being screwthreaded .and;to whicha screw-threaded end .of'" 1 the injector tube ..3.lcan. be connected by an.in.-.

ternally threaded .ring; 9. The burner ring :1

is .also. formed with. an internal screw-thread vlc outside the zone. of .outlets 5, into whicha screw! threaded. end .of. the mixing tube 4 canube cm gaged, or several. of the parts may be made as i burner rin'g..:|,. and the upper end engaged in a groove .ld','.. andithe .lower end around the member .2.:

The;whole .of :the burner canxbe positioned by The mantle 6'is passed over the member 2 and encircling the lower portion .of the vaporizing tube l.

The vaporizing tube l is connected to a pressure container I l and is controlled by a valve l2, as is known.

In the modified example shown in'Figures 4 and 5 of the accompanying drawing, the member 2 is formed with a hollow bore 2b and a series of longitudinal slots or recesses 20 in its periphery, and such member 2 is enclosed in an outer tube l3 covering the slots or recesses 20, and so converting them into passages.

The tube I3 is longer than the member 2 and is preferably reduced in diameter below the member 2, but is of larger diameter than thevaporizing tube l, leaving a passage l3a, the bottom end 20 (Figure 4) passing as mixed vapor and air into the mixing tube 4, where the mixture is diverted downwards to the burner outlets 5, and so ensure a proper mixing, and as the air passes along the passages 2a or 20 surrounding the vaporizing tube I, it will be more efiiciently heated by the burning mixture before mixing with the vapor as it issues from the vaporizing tube I.

What I do claim as my invention and desire to obtain by Letters Patent is:

1. In a hydrocarbon vapor device of the kind set forth, a mantle, a vaporizing tube extending through the mantle, a mixing chamber communicating with the mantle and into which said tube delivers fuel, conduit means providing a combustion air passage between the vaporizing tube and outer confines of the mantle in communication with the atmosphere and the mixing chamber;

2. In a hydrocarbon vapor device of the kind set forth, a mantle, a vaporizing tube extending through the mantle, a tubular device about said tube providing a passage between the vaporizing tube and outer confines of the mantle in communication with the atmosphere, and a mixing chamber means in communication with the mantle and into which said tube and passage respectively deliver fuel and air.

3. In a hydrocarbon vapor device of the kind set forth, a vaporizing tube, a member about said tube having a passage in communication with the atmosphere, a burner ring about said member, a mixing chamber into which said tube and passage respectively discharge fuel and air having one end closed and the other end open-and connected to said ring, a mantle about said member and tube whereby the passage is disposed between the tube and outer confines of the mantle, and said ring having a passage establishing cornmunication from said chamber to said mantle the position of the tubular member insuring heating of the air as well as the fuel before discharge into the mixing chamber.

4. In a hydrocarbon vapor device of the kind set forth, a vaporizing tube, means about said tube having a passage in communication with the atmosphere, a burner ring from which said means extends, an injector extending from the opposite side of the ring to the means into which said tube and passage respectively discharge fuel and air, a chamber member about the injector closed at one end and connected at the other end to said ring, a mantle about said means whereby said passage is located between said tube and the outer confines of the mantle, and said ring having a passage establishing communication from said chamber to said mantle, the position of the first means insuring heating of the air as well as the fuel before discharge into the mixing chamber.

5. In a hydrocarbon vapor device of the kind set forth, a vaporizing tube, means about said tube having a passage in communication with the atmosphere, a burner ring to which said means is attached, an injector means attached to the opposite side of the ring to the first means and into which said tube and passage respectively discharge fuel and air, a dome-shaped mixing chamber member disposed over said injector means and connected to said ring, a mantle attached to said ring and surrounding said first means whereby said passage is located between said tube and the outer confines of the mantle, and said ring having a passage establishing communication from said chamber to said mantle, the position of the first means insuring heating of the air as well as the fuel before discharge into the mixing chamber.

6. In a hydrocarbon vapor device of the kind set forth, a vaporizing tube, a tubular member about said tube having longitudinal, exterior passages in communication with the atmosphere, an outer tube enclosing said passages, a burner ring to which said outer tube is attached, an injector attached to the opposite side of the ring to the outer tube and into which said vaporizing tube and passages respectively discharge fuel and air, a dome-shaped mixing chamber member disposed over said injector and connected to said ring, a mantle attached to said ring and surrounding said outer tube, and said ring having a passage establishing communication from said chamber to said mantle, the position of the device insuring heating of the air before discharge into the mixing chamber.

7. In a hydrocarbon vapor device of the kind set forth a mantle, a vaporizing tube rising through the mantle, a mixing chamber adjacent the top of said vaporizing tube adapted to discharge downwardly into said mantle and into which said tube delivers fuel in an upward direction, conduit means providing a combustion air passage between the vaporizing tube and the outer confines of the mantle in communication with the atmosphere at its lower end and in communication with the mixing chamber at its upper end, the major portion of said passage being below the inlet zone of the fuel and air mixture into the mantle.

' FREDERICK CHARLESTILLEY.

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