US2448656A - Multiple orchard burner - Google Patents

Description

Sept. 7,1948.- 4 J. L. BREESE- 5 MULTIPLE ORCHARD EURNER Filed Aug. 12, 1943- 2 Sheets-Sheet 1 Ina/611202 .hmas L.Bree

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Sept. 7, 1948. A J. L; BREsE 2,448,656

MULT IPLE. ORCHARD BURNER Filed Aug. 12, 1943 2 Sheets-Sheet 2 Patented Sept. 7, 1948 MULTIPLE ORCHARD BURNER.

James L. Breese, Santa Fe, N. Mex., assignor, by mesne assignments, to Breese Burners, Inc., Santa Fe, N. Mex., a corporation of Delaware Application August 12, 1943, Serial No. 498,279

8 Claims.

My invention relates to an improvement in burners and is particularly adaptable for use as an outside heater for controlling frost in orchards.

One purpose is to provide a multiple heater in which a plurality of burners are associated with a single static source of supply.

Another purpose is to provide means for providing two or more burners with widely spaced outlets.

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

My invention is illustrated more or less diagrammatically in the accompanying drawings, wherein:

Figure 1 is a side elevation with parts in vertical section;

Figure 2 is a section along the line 2-2 of Figure 1;

Figure 3 is a partial vertical section on an enlarged scale;

Figure 4 is a section along the line 4'--4 of Figure 3 on a somewhat larger scale.

Like parts are indicated b like characters throughout the specification and drawings.

Referring to the drawings, I indicates the sur face of the ground. 2 indicates a tree or other article to be heated. 3 illustrates a fuel reservoir having a bottom 4, a circumferential side wall 5, an upper offset 6 and a top flange 1. 8 indicates generally a cover having an outer flange 9 adapted to seat upon and surround the flange 1. It is shown as having a central neck Ill with a removable cover ll, through which fuel may be added.

l2 indicates nuts fixed to the bottom 4 of the fuel container. Into each said nut is screw threaded the outer air tube IMO the top of which is welded the cup I4, the lip of the cup being somewhat higher than the tube IS. The cup i4 is set in the top of a T l5, the bottom of which abuts against a platform offset IS with th cover 8. This offset is apertured as at 11 to provide an ample flow space about the exterior of the tube l3. The cup I4 may be relied upon to hold the T downwardly against the platform [6, or if desired, the T may be welded or otherwise permanently secured in place. The T has a side branch Hi, the purpose of which will later appear. Rotatably located within the outer air tube I3 is the inner air tube [9 with its rotating handle 29. .The handle ma rest upon the top of the cup I4 and serve as an abutment for limiting the penetration of the tube 19 downwardly into the tube 13. It will be understood that the inner tube 19 may be readily lifted out of the outer tube l3.

Thetubes are slotted in opposition. Referring for example to Figure 4, I illustrate slots 20, 21 of uneven radial extension. Inthe inner tube are slots 22, 23. The inflow of air downwardly through the open top of the inner tube 19 and out through these opposed-slots may be varied by rotating the inner tube about its axis by means of the handle 29. When the parts are in the position of Figure 4, a maximum flow of air is permitted as the slots 22 and 23 are both unmasked. If the inner tube is rotated in the di rection of the arrow in Figure 4, the slot 22 may be masked by the outer tube while the slot 23 is still completely unmasked. A further rotation of the tube IS in the same direction will begin the masking of the slot 23 and if the rotation is continued far enough, both slots will be masked and there will be no perceptible flow of air through the tube I9.

25 is a pipe extending outwardly from the branch I8 of the T l 5 Its interior communicates with the interior of the burner pct 26 having a plurality'of air inlets 21 located at various distances from its end or bottom 28. An additional row of air inlets 29 is shown adjacent the mouth or top of the pot, these inlets being preferably of greater diameter and more closely spaced than the inlets 28. The mouth of the pot may be closed by the centrally apertured flame ring 30. The space about the pot is closed or shielded by an outer housing 3|, the bottom of which has a clearance 32 about the pipe 25. Thus air flows in about the pct 26 for inflow through the air inlet apertures 21 and 29.

The pot structure is secured to a duct or flue 33 herein shown as having a substantially horizontal extension 34 and any suitable ground engaging supports 35. The duct 34 preferably ends in an elbow 36 communicating with a generally vertical section 31. The vertical sections 31 for the various burner units are widely spaced or separated as shown in Figure 1 and may be suitably disposed in relation to the tree 'or trees or other articles to be considered.

I have described but one of the burners but it will be understood that two or more identical burner structures may be employed, two being shown in the drawings herein.

Referring to the ioperation of the device, it will be assumed that the container has a sub stantial volume of liquid fuel therein. This fuel may be added through the neck I0. In starting the burner, the cup M may be filled with gasoline or any other suitable fuel, the inner air tube t9 may be upwardly withdrawn. When the fuel is ignited in the cup, the burning fuel flows down through the outer tube I3 to the surface of the fuel. The fuel begins to be vaporized and combustion is initiated. Thereafter the inner pipe [9 is dropped into place and is rotated to the desired position. For example, a substantial excess air supply may be provided for the starting stage. The combustion taking place at or near the level of the fuel vaporizes a substantial amount of fuel and the air admit-ted is insufiicient for complete combustion at that point. The vaporized fuel and products of combustion does flow through the pipe 25 to the interior of the pct 26. air supply is received through the apertures 21 and a final air supply through the apertures 29. The result is complete combustion of the vaporized fuel, the flame and the roducts of combustion flowing into the pipe 36. The heat of combustion and the products of combustion are delivered upwardly through the pipe 31 and serve to raise substantially the temperature of the air about the tree.

It will be understood that after combustion has been initiated, it is controlled by varying the air supply through the pipe l8. An increase in the air supply will increase the rate of vaporization and combustion and a decrease in the air supply will decrease it. If combustion is to be entirely terminated, the pipe 59 is rotated to the closing position, wherein the apertures 22 and 23 are both masked.

It will be realized that whereas I have shown and described an operative device, still many changes might be made in the size, shape, number, arrangement and disposition of parts without departing materially from the spirit of my invention and I wish, therefore, that my showing be taken as in a large sense as diagrammatic.

I claim:

1. In a vaporizing burner, a vaporizing container adapted to hold a substantial body of liquid fuel, a burner, including a burner pot, a connecting tube extending between the burner pot and the vaporizing container and adapted to direct vaporized fuel from the container to the burner and an air inlet tube extending through said connecting tube and adapted to direct outside air toward the surfaceof the liquid fuel in the container at a point adjacent the inlet end of said tube.

2. In a vaporizing burner, a vaporizing container adapted to hold a substantial body of liquid fuel, a burner, including a burner pot, a connecting tube extending between the burner pot and the vaporizing container and adapted to direct vaporized fuel from the container to the burner and an air inlet tube extending through said connecting tube and adapted to direct outside air toward the surface of the liquid fuel in the container at a point adjacent the inlet end of said tube, and means for varying the flow of air through said tube.

3. In a vaporizing burner, a vaporizing container adapted to hold a substantial body of liquid fuel, a burner, including a burner pot, a connecting tube extending between the burner pot and the vaporizing container and adapted to direct vaporized :fuel from the container to the burner and an air inlet tube extending through said connecting tube and adapted to direct outside air toward the surface of the liquid fuel in the container at a point adjacent the inlet end of said tube, and means for varying the flow of air through said tube, including a concentric There an additional shutter tube, both tubes having alignable apertures in their sides.

4. In a vaporizing burner, a burner base in the form of a vaporizing container adapted to hold a substantial body of a liquid fuel, an air inlet passage adapted to admit air, for vaporizing combustion, to the interior of said container, a gas outlet passage for said container surrounding said air inlet passage, and a burner pot, the interior of which is in communication with and is adapted to receive vaporized fuel from said gas outlet passage, said pot having a circumferential wall with a plurality of air inlets therein.

5. In a vaporizing burner, a burner base in the form of a vaporizing container adapted to hold a substantial body of a liquid fuel, an air inlet passage adapted to admit air, for vaporizing combustion, to the interior of said container, a gas outlet passage for said container surrounding said air inlet passage, and a burner pot, the interior of which is in communication with and is adapted to receive vaporized fuel from said gas outlet passage.

6. In a vaporizing burner, a burner base in the form of a vaporizing container adapted to hold a substantial body of a liquid fuel, an air inlet passage adapted to admit air, for vaporizing combustion, to the interior of said container, a gas outlet passage for said container surrounding said air inlet passage, and a burner pot, the interior of which is in communication with and is adapted to receive vaporized fuel from said gas outlet passage, said pot having an open end and a closed end, a vaporized fuel delivery duct extending between said closed end and said gas outlet passage, the opposite end of the pot being open, said pot having a circumferential wall with a plurality of primary air inlet aperture circumferentially spaced thereabout and located at various distances from the ends of the pot and a plurality of secondary air inlet apertures located adjacent the discharge end of the pot.

7. In a vaporizing burner, a burner base in the form of a vaporizing container adapted to hold a substantial body of a liquid fuel, an air inlet passage adapted to admit air, for vaporizing combustion, to the interior of said container, a gas outlet passage for said container surrounding said air inlet passage, and a, burner pot, the interior of which is in communication with and is adapted to receive vaporized fuel from said gas outlet passage, said pot having an open end and a closed end, a vaporized fuel delivery duct extending between said closed end and said gas outlet passage, the opposite end of the pot being open, said pot having a circumferential wall with a plurality of primary air inlet apertures circumferentially spaced thereabout and located at various distances from the ends of the pot and a, plurality of secondary air inlet apertures located adjacent the discharge end of the pot, and a centrally apertured combustion ring partially closing the otherwise open end of the pot.

8. In a vaporizing burner, a burner base in the form of a vaporizing containeradapted to hold a substantial body of a liquid fuel, an air inlet passage adapted to admit air, for vaporizing combustion, to the interior of said container, 3, gas outlet passage for said container surrounding said air inlet passage, and a burner pot, the interior of which is in communication with and is adapted to receive vaporized fuel from said gas outlet passage, said pot having an open end and a closed end, a vaporized fuel delivery duct extending between said closed end and said gas outlet passage, the opposite end of the pot being open, said pot having a circumferential wall with a plurality of primary air inlet apertures circumferentially spaced thereabout and located at various distances from the ends of the pot and a plurality of secondary air inlet apertures located adjacent the discharge end of the pot, and a combined heater and flue extending from the open end of the pot.

JAMES L. BREESE.

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

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