US2470682A

US2470682A - Liquid fuel burner with vaporizing assembly

Info

Publication number: US2470682A
Application number: US540249A
Authority: US
Inventors: James L Breese
Original assignee: BREESE BURNERS Inc
Current assignee: BREESE BURNERS Inc
Priority date: 1944-06-14
Filing date: 1944-06-14
Publication date: 1949-05-17
Anticipated expiration: 1966-05-17

Description

May 17, 1949. J. L. BREESE LIQUID FUEL BURER WITH VAPORIZING ASSEMBLY Filed Jupe 14, 1944 3 Sheets-Sheet 1 Nh Nm Lili.;

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May 17, 1949. J, L, BREESE 2,470,682

LIQUID FUEL BURNER WITH VAPORIZ'ING ASSEMBLY Filed June 14, 1944 3 Sheets-Sheet 3 i 30 o 77 sa Patented May 17, 1949 LIQUID FUEL BURNER WITH VPORIZING ASSEMBLY l James L. Breese, Santa Fe, N. Mex., assigner, by mesne assignments, to Breese Burners, Inc., Santa Fe, N. Mex., a corporation of Delaware Application June 14, 1944, Serial No. 540,249

1 Claim.

The invention relates to an improvement in liquid fuel burners and has for one purpose to provide improved liquid fuel vaporizing means.

Another purpose is to provide improved means for vaporizing liquid fuel in connection with pot type burners.

Another purpose is to provide an improved va.- porizing cup and supporting means therefor, for use in horizontal pot type burners.

Another purpose is to provide improved means elective to clean the fuel admission passage extending to the vaporizing cup or area of a liquid fuel burner.

Other purposes will appear from time to time throughout the specification.

The invention is illustrated more or less dia.- grammatically in the accompanying drawings, wherein:

Figure 1 is a plan view;

Figure 2 is a section on the line 2-2 of Fig. 1;

Figure 3 is a section on the line 3-3 of Fig. 2; and

Figures 4 and 5 are details.

Like parts are indicated by like symbols throughout the specification and drawings.

Referring to the drawings I generally indicates a supporting ring having a peripherial flange 2 from which extends a bracket 3 provided with a supporting member 4. On the bracket may be positioned any liquid fuel control means 5 such as a float chamber assembly. The details of themselves do not form part of the present invention. i is any suitable shield mounted on the bracket 3 and extending between the below described burner and the float chamber assembly, the shield i being effective to protect the float chamber from direct heat radiation.

Referring to the burner assembly proper 1 is a ring located at the opposite end of the burner and having a circumferential outer ilange 8 and an inner flange I denning between them a space or circumferential depression I5. II is any suitable packing means in said depression III. I2 is an outer generally cylindrical housing formed of sheet metal or the like. I3 is the burner pot proper herein shown as including a circumferentially extending wall and unitary closed end I4. I5 is a baille having spacing edge portions I6. It may be welded or otherwise secured to the end I4 as at I1. The ring I has a central aperture Il and may have secured thereto a. ring I9 with a somewhat smaller central aperture 2lil aligned generally with the axis of the pot and with the baille I5. 2l is a name ring centrally aperturedv asat 22 andabuttingatits edgesonaledge or,

' outer housing I2 is also provided with an inwardly extending flange 23. The structure thus formed may be locked together by any suitable tension members or bolts 3|! the heads 3| of which may be recessed into securing blocks or plates 32 which abut against the outer face of the ring 2|. 33 are any suitable locking nuts. It will be noted that the pot I3 is provided with a plurality of air inlet apertures 3l located at various distances from the end of the pot. They may conveniently be arranged in rows, the apertures of adjacent rows being staggered. I may provide any suitable means for admitting secondary air. I illustrate for example a row of secondary air inlets 35 extending about the pot and tilted toward the open end of the pot. In the form of the device herein shown the secondary air inlets 35 are at the general plane of the ring 24 and project jets of air into the space between the rings 2l and 24. 36 are supplemental air inlets which direct air into a space defined between the pot I3 and the directing ange 31. Thus air is directed substantially parallel with the inner face of the pot I3 toward the bases of the air jets projected by the secondary air inlets 35. In the operation of the burner it will be understood that a liquid ffuel is delivered to the space within the pot I3 for vaporization by combustion taking place in the pot or at the open end of the pot. 40 indicates a vaporizing cup having a top open as at 4I and at each side of the cup is a laterally extending boss 42 provided with a bore 43. The cup may also have a circumferentially extending unitary flange 44. The ends of the bosses 42 are shown as engaging attened portions 45 of the pot wall. A liquid fuel inlet tube 45, externally screw threaded as at 41 fits the internal screw threaded end 48 of one of the bosses 42. At its outer end it receives a T connection 49. To one branch of the T is secured the tting '50 which has an externally screw threaded enlargement 5I receiving a gland 52 which is held under pressure by the apertured plug 53 held in position by the nut 54. Fuel'is admitted through the T connection 55 from the liquid fuel line 56 which extends to the iloat chamber 51'of the liquid fuel control means 5.

The details of the float chamber do not of themselves form part of the present invention. It is understood that any suitable means may be employed in the float chamber for maintaining a predetermined level of fuel in the cup 4D. 6l is any suitable valve controlling means for varying the rate of flow of liquid fuel from the iloat chamber 51 to the fitting 46 and thus to the interior of the cup 40. i 1

A clean out element is preferably permanently positioned in the liquid fuel inlet system thus provided. It is shown as including a stem 60 having movement limiting enlargements 6I, 62. It extends outwardly through the gland 52, which substantially prevents leakage. The enlargement 4I limits the inward movementl of the stem 60 toward the cup and the enlargement 62 limits its outward movement. The outward position of its end portion is indicated in dotted line in Fig. 2. It may be laterally odset as at 63 and provided with a crank handle 64,4 to permit its ready man- -ual rotation. It is flattened and somewhat en- -larged at its inner end as at 65 and terminates in converging

cutting edges

66, 66a.

1 The opposite boss 42,.inwardly screw threaded as at 48 receives a securing enclosure plug 10 exteriorly screw threaded as at 1I and is provided with any suitable external head 12. It may extend through any suitable screw threaded nut 13 engaging the exterior of the outer hous- .ing I2. A similar nut 13a on the exterior of the .member 46 engages the opposite side of the outer housing I2. Since both bosses or enlargements 42 are identical it will be understood that :the cup can be employed whether the float chamaber assembly is on the left hand of the burner as shown in Fig. 2 or on the right hand of the burner. Access to the cup for lighting is provided by a centrally apertured element shown for example in Fig. 3, which seats in an aperture in that part of the wall I3 which overlies the cup A4I). It is normally closed by a plug 16 that seats by gravity on the upper face of the ring 15 and .includes an inwardly extending portion 11. The .member 16 may be inserted through an aperture 1B in the outer housing I2. It may be removed through such aperture but its loss or displacement is prevented by any suitable chain or sencuring member 19 whereby it is flexibly secured to the exterior of the housing I2.

Any suitable booster fan mechanism, not herein shown, may be seated in the aperture 20, whereby air under pressure may be delivered into the space between the outer housing I2 and the pot I3. Any suitable baille means 80 may be provided in the space between the side wall of the .pot I3 and the opposed portion of the outer housing I2. This baille prevents spiralling of the air in the space between the pot wall and housing.

It will be realized that, whereas I have de- ,scribed and shown a practical and operative embodiment of my invention and the method for carrying it out, nevertheless many changes may .be made in the size, shape, number and dispo- `-sition of parts and in the details and steps of such method without departing from the spirit of my invention. I therefore wish my description and drawings to be taken as in a broad sense illustrative or diagrammatic, rather than as limiting me to my precise showing.

. The use and operation of my invention are as follows:

` In starting the device liquid fuel is supplied to the interior of the cup from the float valve I-assembly-5, or from any other suitable source of liouidfuel. Thel fuel may be initially ignited.-

4 through the ring 15 and the aperture 1l. When ignition has taken place the

plug

14, 11 is put back in place, and is eifective to prevent any substantial air leakage. Assume that ignition has' begun and that the liquid fuel in the pot is under. going vaporization. The vaporized fuel rises from the pot and mixes with the primary air owing through the primary aix'. inlets 34. The result is the formation of a mixture of vaporized fuel and air which, when the device ls burning at a high rate of combustion, is mixed with secondary air delivered through the apertures 35 and is fully burned at or beyond the open end of the pot. Air pressure may be delivered through the aperture 20 for example by employment of any suitable booster fan unit. The result is a flame which flows through the aperture 22 of the flame ring 2i and may extend for a substantial distance outside of the pot. Where sufficient air pressure is employed the burner lends itself to uses where a horizontally projected frame of substantial length is desirable. It may be employed for example in small heating plants. cook stoves. hot water heaters and the like.

The ring 24 serves as a recirculatlng ring as the secondary air is directed into the space between the

rings

24 and 2|. The vaporized fuel is thus completely mixed with the inflowing secondary air and some of the contents of the pot are drawn outwardly about the outer edge 21 of the ring 24. The baille I5 prevents undue cooling of the pot end I4 by the inflowing air. The baffles prevent splralling of the air in the space between the pot I3 and the outer housing I2. The air delivered through the apertures 36 and directed by the flange 31 tends to hold the secondary air jets to the pot wall, and reduces or eliminates combustion noise.

The fuel within the cup 40is subjected to the direct heat of combustion taking place within the pot, since the top of the cup is open. 'I'he fuel is also subjected to conducted heat, to heat conducted by the cup itself and by the circumferential flange 44.

A problem in connection with burners of this type is to prevent the formation of carbon within the fuel inlet passage. Some carbon will form and it is therefore desirable to provide means for cleaning out the fuel inlet passage. The rod 60 with its terminal portion 65 and its

cutting edges

66, 66a constitute an eflicient and easily employed means for cleaning out the fuel inlet passage, or that part of the passage which is subjected to sufficient heat to cause the deposit of carbon or of other contents of the fuel. The clean out member may formally be left in the dotted line position of Fig. 2. When in that position the blade 65 is withdrawn into the ltube or duct 46. Since the blade 65 is flattened, as shown in Fig. 5, it does not interrupt the free flow of fuel. Its outward withdrawal is limited by the expanded portions 62 which may for example abut against the inner end of the fitting 50. The user from time to time, or when he is satisfied that carbon or solids have formed in the boss 42, can rotate the blade 65 by rotating the handle 64. At the same time he can advance the rod 60 toward the cup 40. The

edges

66 and 66a are effective to cut through any accumulated solids. The solids .will be carried into the interior of the cup by the flowing fuel, and the rod 60 can again be withdrawn to dotted line position. In use it is advantageous to make a routine occasionally employing the clean out members thus provided.

The unit is conveniently compact and may be readily assembled or disassembled.

I claim:

In a liquid fue] burner, a pot having an open end, a circumferential side wall and an end wall, said side wall having a plurality of air inlet apertures located at various distances from the ends of the pot, a vaporizing cup in said pot having lateral extensions engaging opposite parts of said circumferential side wall, each said extension having a passage extending therethrough into communication with the interior of the cup, and means for securing the cup in relation to the pot including a liquid fuel inlet duct extending through the pot wall and entering one of said lateral extensions and a securing element extending through the pot wall and entering the other of said lateral extensions.

JAMES L. BREESE.

REFERENCES CITED The following references are of record in the ille of this patent:

Number UNITED STATES PATENTS Name Date Grimm Apr. 11, 1899 Mack Mar. 12, 1901 Miner Nov. 21, 1905 Wednbine et al. Jan. 23, 1923 Breese, Jr. Sept. 6, 1927 Chadwick Jan. 8, 1935 Daniels June 15, 1937 Bock Nov. 23, 1937 Stoner Aug. 16, 1938 Knapp et al Nov. 22, 1938 Rose et al. Oct. 15, 1940 Sabins May 6, 1941 Horne Dec. 2, 1941 Skolas Nov. 3, 1942 Welsh Mar. 21, 1944 Breese et al 1- May 16, 1944