US1082755A - Oil and water burner. - Google Patents

Description

G. G. LUNDSTROM.

OIL AND WATER BURNER.

APPLICATION FILED DEG.7,1912.

1,082,755, Patented Dec. 30, 1913.

3 SHEETS-SHEET 1.

lV/TZVESSES: INVENTOR.

ATTORNEYS.

G. G. LUNDSTROM.

OIL AND WATER BURNER.

APPLI'GATION FILED no.7, 1912.

1,082,755. Patented Dec. 30, 1913.

3 SHEETS-SHEET 2.

WITNESSES: Q [NVE TOR.

k A M Q I 0 BY ATTORNEYJ COLUMBIA PLANOGRAPH c0.. WASHINGTON D c CLG. LUNDSTROM.

OIL AND WATER BURNER.

APPLICATION FILED no.7, 1912.

Patnted Dec. 30, 1913.

3 SHEETS-SHEET 3.

55 [I W 5 54 5055 36 L 5/ 52 4/ 49 4623 4 :5 t 66 F 4s 6b 45 r 67 I 29 .L so 47 27 29 66 WITNESSES: v r DZVENTOR BY 54W f 7 M ATTORNEYS,

COLUMBIA PMNOORAPH CO.,WMHINGTDN. D. c.

PATEN OFFICE.

CHARLES G. LUNDSTROM, OF DES MOINES, IOWA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO M. MITCHELL, OF DES MOINES, IOWA.

OIL AND WATER BURNER.

Specification ofjLetters Patent.

Patented Dec. 30, 1913.

To all whom/fit mag concern;

Be it known that .I, CHARLns G. Lonn- STRQM, a citizen-0f the United States,res1ding .at .Des Moines, in the county of Polk and State of Iowa, have invented a certain new and useful Oil and WVater Burner, of which ;the following is .a specification.

The object .ofany invention ,-is to provide an .oil and water burner tofsimple, durable and inexpensive construction provided with means whereby steam may be fed to the burner together with the oil forthereby pro-- ducing a hotter, and .clearer flame, with a minimum amount of .smoke.

A further object is toprovide .inisuc'h a de vice means for maintaining a water and steam circulation through the flame of the fire ,and for carrying the steam generated to the burner, the parts for carnying the waterand steam beingso arranged that thecirculation of :the steam is upwardly from the heating tube.

A furtherpbject is to provide in such a water and steam circulating system, a suit able safety valve.

A further object is to provide in a :device of the class mentioned .a water and steam circulating system of ,thekind described and also an auxiliary water andesteam .circulat. ing system in which is included a safety valve.

device an automatic cut-off connected with the water circulating system and arranged; and constructed sothatafailurein the water 5 supply automatically cutsoff the flow of-oil;

. portion 11 is to the burner.

ofthe furnace or stovein which thevburner is installed.

A further object is'to provide in a device of the kindanentioned, simple and eflective' mechanism ,for automatically controlling, regulating and varying the supply: of :water' valve 17. The inner end of the tube 16 justable burner tip which may :be readily,

controlled from outside the firebox ;and

.a top or plan elevation of the :shows a front or end elevation of my oil and waterburner.

=tional view taken A further object is to provide in such a ,vide a valve 17,

which may .be readily adjusted to regulate the amount of steam fed to the burner, said burner tip being so constructed and installed that it may be readily removed and another burner .tip placed in position.

A further object is to provide a suitable tray for carrying a wick device which may be saturated with the oil used as fuel and used for generating steam when the burner is first started.

My invention consists in certain details, inztheconstruction, arrangement and combination of the various parts of the device, whereby .the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which:

Figure 1 shows a side elevation of my improved oil and water burner. Fig. 2 shows same. Fig. 3

Fig. 4 shows a vertical, secon the line 44 of Fig. 3. Fig. 5 shows a vertical, sectional view taken onthe line 5-5 of Fig. 4, and Fig. 6 shows ;a detail view ofthe filter device in the steam passage.

In the accompanying drawings, I have aised the reference numeral 10 to indicate generally the front wall of the fire-box of a furnace. Said wall is provided with a suit- :ableopening in which is secured by any desired means a burner body or casting which iincludes the fiat portion 11. The flat porition 11 forms a part of the front of the fur- FI'IELCG. Extending rearwardly from the flat a thicker portion or block which lhave indicated generallyby the ref- :erence numeral 12.

I have provided a water supply pipe 13 A which divides into branches 14 and 15 near the burner body. Communicating with the branch 14 is a tube 16 extending through the burner body into the furnace. I propreferably at the junction between the pipes or tubes 14 and 16, which valve is controlled by a hand wheel 18. An indicating dial may be used if desired in connection with the hand wheel 18 and the communicates with a large tube 19 which I shall call the boiler. The'tube 16 and the boiler 19 are preferably arranged so that the inner end of the boiler 19 is higher than the end adjacent to the burner body. Communicating with the upper portion of the rear end of the boiler 19 is a pipe 20 which extends upwardly and toward the front of the furnace where it communicates at its highest point with a vertical passage 21 in the burner body. It will thus be seen that the movement of water and steam in the furnace is always upward. At the lower end of the passage 21 is a tube 2 extending laterally from the burner body and connected with the tube 22 is a tube 23 which extends through the burner body into the furnace. In the tube 22 is a safety valve 23. Connected with the stem of the safety valve is a lever arm 24- on which is a weight 25 which may be adjusted longitudinally on the arm 2 f for regulating the safety valve and determining the amount of steam pres sure necessary to permit the safety valve to blow off Communicating with the lower end of the passage 21 is a laterally extending passage 26 opposite the tube 22. The passage 26 communicates with the opening 27 in which the burner tip, hereinafter described, is secured. A smaller norizontal passage 28 extends from the opening 27 to the outside of the burner body. Screwed into the passage 28 of the burner body is a tube 29 having a hollow cylindrical portion 29 extending through the passage 28 to the opening 27 and internally screw threaded at its inner end.

For supplying oil to my improved oil and water burner, I have provided an oil supply pipe 30 communicating with an automatic cut-off 31 which will hereinafter be more fully described. The automatic cut-off 31 communicates with the tube 29.

Communicating with the branch 15 of the water pipe is a tube or pipe 32, extending through the burner body and communicating within the furnace with a larger tube 33, the inner end of which is higher than its outer end. The tubes 32 and 33 form part of an auxiliary water and steam circulation. In the branch 15 is a valve 56, the stem 57 of which is preferably controlled by a hand wheel 58. Communicating with the inner end of the larger tube 33 is a tube 34 extending upwardly and toward the burner body. The tube 3 1 communicates with a passage 35. The passage 35 communicates with a vertical passage 36. Communicating with the lower end of the passage 36 is a short tube 37 extending laterally from the burner body. Communicating with the tube 37 is a short tube 38 extending into the furnace. In the tube 37 is a safety valve 38 on the stem of which is a ball or weight 39. A horizontal passage 10 extends from the lower end of the passage 36 to the outer surface of the burner body. Screwed into the burner body and communicating with the passage 40 is a tube e1 preferably parallel with the tube 29.

I will now describe the automatic cut-off 31 more fully. The body of the cut-off 31 is provided with a passage 4:2 which communicates with the oil supply pipe 30, and is preferably horizontally arranged. Extending upwardly from the passage 4 2 is a passage 43, the upper and lower ends of which form valve seats 14: and 55. The valves 16 and it are arranged to coact with the valve seats 4% and 15 and are connected by a stem 48. Above the valve seat ti is a larger opening 49 which extends to the top of the cutoff. In the top of the cut-off 31 is a plug 50. A stem or rod 51 is mounted in the plug 50. In the opening 15 below the plug 50 is a collar 52 screwed into the cut-off, and between the collar 52 and the plug 50 is packing material The stem or rod 51 is slidably mounted, and above the plug 50, is provided with an extensible coil spring 5% for normally holding it at the upward limit of its movement. On the upper end of the stem 51 is a handle which may be in the shape of a ball. In the oil supply tube is a valve 59, the stem 60 of which is controlled by a hand wheel 61. It will be understood that an indicating dial may be placed adjacent to the hand wheel 61 if desired.

I preferably provide suitable means for operating the valves 17 and 59 in unison. As shown in the drawings a sprocket wheel 71 is mounted on the stem 60 in line with a sprocket wheel 70 on the stem of the valve 17, and the wheels 70 and 17 are operatively connected by a sprocket chain 72.

In the upper end of the vertical passage 21, I provide a filter 62, shown in Fig. 6, which may be of any suitable form.

Secured to the lower portion of the burner body and extending into the furnace is a pan 63 designed to hold fuel of any kind for generating heat when the burner is first started.

For starting fuel, I use the oil regularly used to make the fire and turn it into the pan 63 in the same manner as the oil is regularly supplied to the .fire and this pan contains asbestos wool 63 that serves as a wick and is indestructible by fire.

Received within the tube 66 and extending across the opening 27 is a burner tip 65, one end of which is screwed into the portion 29 of the tube 29. The burner tip comprises a tube, one end of which communi cates with the opening in the portion 29 and the other end of which extends slightly beyond the burner body into the furnace. A tube 66, of greater diameter than the burner tip 65 is screwed into the opening 27 and communicates therewith. The inner end of the opening in the tube 66 is enlarged at 67, as shown in Fig. l, for purposes hereinafter more fully explained. That portion of the burner tip which is received within the opening 27 is provided with a shoulder 68.

Assuming that all the :parts are installed in .position in a furnace, and that the pipes 13 and 30 are connected with water and oil tanks respectively, my improved oil and water burner is then ready for use. When theburner is installed, Iplace in the pan-63 some inflammable material such as asbestos wool, suitable to serve as a wick and to spread oil. To start the fire, I turn oil on the asbestos Wool and ignite it, to heat the boiler 19 and the pipe 33. Then I open the valve 17 and permit some water 'to flow into the water pipes so that steam will begenerated. The flame from the starting fuel lights the-oil and it takes a very short period of time to generate sufficient steam to greatly improve the flame from the burner tip. In starting the fire, the stem 'or,rod 51 is pressed down, thereby unseating the valve 47 and permitting the oil to pass through the passages 42 and 43 and the tube 29, to the burner tip. As soon as a reasonable amount of steam has been generated, the steam from the auxiliary circulating system passes into the chamber 49 and holds the valve 46 down. The steam from the pipe 20 passes through the passages 21 and 26 to the opening 27and then through the tube 66 around the burner tip at the outer end of which it mingles with the flame of the burning oil. Up to a certain limit, I have found that the more steam that is mingled with the flame the betterand hotter is the flame produced. The parts may be ad justed beforehand so that water and oil fuel supply may be regulated together by means of the sprockets and chain above described. If there is too large-a flow of water ortoo great a generation of steam, water or steam passes into the furnace through the tube 23 the safety valve 23 being opened by the pressure. An excess-of water or an excessof steam pressure in the auxiliary circulating system may be relieved through the valve 38 Should the water supply stop or the steam pressure drop for any reason, the oil pressure will raise the valve 47, the bottom of which is preferably convex, as shown in Fig. 4, and thereby shut off the oil supply and put out the fire.

.On the lever 24, I have placed the movable weight 25 for regulating the amount of pressure necessary to cause surplus water or steam to discharge through the pipe 23, and I thereby regulate the amount of steam fed to the tube 66. The stem 51 is used simply to hold the valve 47 open until the surplus enough steam is generated to hold the valve 46 closed. The proper proportional amounts of water and oil supply being determined, the flame and the resulting heat may be then regulated by operating the hand Wheel 61.

The block 12 of the burner body is provided with an opening 75 through which pliers or other instruments may be inserted for operating the tube 66, or the burner tip 65 from outside the furnace. The relative supply of steam furnished to the burner tip may be very accurately regulated by screwing the tube 66 in or out so that the shoulder 68 is more or less completely received within the enlarged opening 67 in one end of the tube 66. If desired, the tube 66 and the burner 65 maybe entirely removed from the burner body by means of tools inserted through the opening 75 from outside the furnace, and may be replaced or repaired.

The advantages of my improved oil and water burner are many. It is a well known fact that if steam is injected into the flame of burning oil, the flame will be greatly improved and the heat increased. By means of my device the amount of water supply can be accurately regulated and the relative amount of steam fed to the burner tip may be accurately controlled. The steam is filtered before being fed to the burner tip and any excess of steam or water is disposed of by means of the safety valves in the main and auxiliary circulating systems.

By means of the auxiliary system, and the automatic cut-off, I have provided means whereby the failure of the water or steam supply will automatically result in stopping the flow of oil.

The parts of my improved oil and water burner are simple and durable in construction. I have found that I can use kerosene, distillate oil, crude oil, or other oils by simply varying the size of the opening in the burner tip. A steam gage may be used in connection with the water and steam circulat-ion, ifdesired.

WV hen steam is injected into the burning oil, or fed to the flame with the oil, it is a well known fact that a much hotter and better fire may be secured than by burning the oil alone. By using the steam tube around the burner tip, the steam is fed to the oil at all points around the discharge end of the burner tip and I thereby secure better results than by feeding the steam from one side. The fire produced by a steam and water burner thus constructed gives off practically no smoke. My oil and water burner leaves no ash or waste products.

By the arrangement of the circulating system, the movement of the steam is always upward and I am thereby able to secure dry steam for feeding to the burner tip. Special attention is called to the method of starting the fire. The oil is simply turned on to the asbestos wool in the pan 60 and lgnited. A small amount of water is turned into the circulating system and steam is upwardly generated. Steam may then be turned into the steam discharge tube and the burner may be regulated as desired. By using the asbestos wool, I dispense with the necessity for using wood or other kindling for generating steam for starting the burner. The same asbestos may be used for a long time.

It will be understood that a great many variations may be made in the details of construction of my device without departing from the essential features of the invention and that I intend to cover in this application any form of the oil and water burner which may be included in the scope of the appended claims.

I claim as my invention:

1. In a device of the class described, a burner body having an opening, a passage for oil coimnunicating therewith, and a pas sage for steam communicating therewith, a steam tube adjustably and detachably mounted in said opening, the opening in said steam tube being enlarged at its inner end, a detachable burner tip received in said steam tube and communicating with said oil passage, said burner tip being provided with a shoulder so arranged that by the adjustment of the burner tip being provided with a shoulder steam tube, the size of the passage from the opening in the burner body into the steam tube may be varied, said burner body being provided with an opening whereby said steam tube may be adjusted or removed and said burner tip may be removed from outside the furnace.

2. In a device'of the class described, a burner body having an opening, a passage for oil communicating therewith, and a passage for steam communicating therewith, a steam tube detachably mountedin said opening, a detachable burner tip received within said steam tube and communicating with said oil passage, said burner body being provided with an opening whereby said steam tube and burner tip may be removed from outside a furnace.

3. In a device of the class described, a burner body designed to form part of a furnace wall, said body having a passage for water, an opening to receive a burner tip, steam and oil passages communicating with said opening, a boiler tube designed to extend into a fire box and communicating with said water and steam passages respectively, a burner tip mounted in said opening to communicate with said oil passage and of such size as to allow steam to pass from the steam passage through said opening around said tip.

4. In a device of the class described, the combination of a burner body, a burner mounted therein, an oil supply pipe communicating with said burner, a water and steam circulating system for discharging steam adjacent to said burner, an auxiliary water and steam circulating system, a cutoff in said oil supply pipe operatively connected with said last system for holding said cut-off open when the steam pressure in said last system is above a certain point, said cut-0E being arranged to normally stand in closed position.

5. In a device of the class described, a body having an opening to receive a burner, an oil supply passage, a steam passage communicating with said oil passage, a second steam passage, a water and steam circulating system communicating with said first steam passage, an oil supply pipe communicating with said oil passage, an auxiliary water and steam circulating system extending into the furnace from said body and communicating at its highest point with said last described steam passage, an automatic cut-01f in said oil supply pipe, said auxiliary water and steam circulation being operatively connected with said cut-off for shutting off the oil supply, if for any reason the steam pressure therein should go down, said burner body furnishing a support for the parts above described and being designed to be detachably mounted in the Wall of the furnace.

6. In a device of the class described, a burner body, comprising a portion designed to form part of a furnace or stove wall, and a block portion, said block portion being provided with an opening extending through it, and with an oil supply passage communicating with said opening, said block being also provided with a second opening whereby access may be had from outside the furnace to a burner tip extending from said opening into the furnace, a steam tube received in said first opening and designed to extend into a furnace, a burner tube received in said steam tube and extending beyond it into said first opening and. communicating with said oil supply passage, said burner tube being provided with a shoulder within said opening, said steam tube being longitudinally adjustable, and having an enlarged opening in its end within the opening in the burner tube designed to coact with said shoulder for regulating the size of the passage from the opening in said head into said steam tube.

7. In a device of the class described, a burner body, a burner tip connected therewith, means for supplying fuel through said burner body to said tip, a main circulating fuel either upon a failure of the Water or 10 system connected with said body, means for steam supply to the auxiliary circulating supplying Water thereto means for connectsystem.

ing said system With said burner tip, an Des Moines, Iowa, November 21,1912. auxiliary circulating system, means for su plying Water thereto, and an automatic cu t- CHARLES LUNDSTROM' ofi arranged in the path of said fuel supply Witnesses:

and designed to be operated from said aux- M. VVALLAGE,

iliary circulating system for cutting off the S. ROBINSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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