Патент USA US2136317код для вставки
2,136,317 Patented Nov. 8, 1938 UNITED STATES PATENT OFFICE 2,136,317 OIL BURNING FURNACE Cominardo Rialdini, Philadelphia, Pa. Application November 18, 1937, Serial No. 175,315 3 Claims. (Cl. 158-91) This invention relates to the class of stoves and furnaces and pertains particularly to an im proved oil burning heater or furnace. The primary object of the present invention 5 is to provide an improved oil burner stove or furnace in which novel means is employed for effecting the complete combustion of the fuel oil whereby the maximum of ‘heat value will be obtained from the fuel. Another object of the invention is to provide 110 an oil burning furnace wherein novel means is employed for introducing air for mixture with the vaporized oil whereby complete combustion of the fuel is obtained and a minimum of car bon deposit results. A still further object of the invention is to provide a novel- oil burner structure in which a combined ?re pot and water jacket unit is em ployed which serves the double function of pro 20 viding a receptacle in which the oil is vaporized and means for supplying domestic hot water in addition to the water heated in the unit for the usual heat radiating purposes. The invention will be best understood from 26 a consideration of the following detailed descrip tion taken in connection with the accompanying drawing forming part of this speci?cation, with the understanding, however, that the invention is not con?ned to any strict conformity with the .30 ‘showing of the drawing but may be changed or modi?ed so long as such changes or modi?cations mark no material departure from the salient fea tures of the invention as expressed in the ap pended claims, In the drawing: Figure 1 is a view in vertical section thru a heating structure built in accordance with the present invention. Fig. 2 is a view in bottom plan of the central 40 portion of the air chamber of the heater per se. Referring now more particularly to the draw ing, the numeral I generally designates the fur nace wall which is here shown as being divided into- an upper double-walled water cell unit 2 and a lower hollow unit 3 which constitutes shell 2 so as to carry oif the heated water to radiators or other units and any suitable means may be employed for returning the water to the unit 2, as for example, thru the domestic_ water heating portion of the furnace structure =-5 which will be hereinafter more fully described. Disposed in the central part of the furnace casing is a unit in the form preferably of a cast ing which is generally indicated by the numeral _ v 8 and which as shown has an outer vertical wall ‘10 portion 9 which is closed by the bottom wall I0 and which has within its upper portion the ?re pot II. This pot has its wall downwardly taper ing, and is joined integrally with the trans verse wall or web I2, while its top edge is joined ‘15 with the outer wall 9 by the short web l3,\thus forming the closed area I4 which constitutes a water jacket around the ?re pot. Any suitable means may be employed for sup porting the unit 8 within the furnace structure, ‘20 such as the legs l5 which maintain the bottom ID a substantial distance above the ?oor 16 upon which the furnace stands. This bottom: I!) of the unit is provided with a central opening I‘! and a cover plate I8 is secured to the lower face of ‘‘25 the bottom by the screws l9, by which it may be adjusted relative to the opening so as to regu late the ?ow of air thru the opening, as herein after described. The wall 9 of the unit 8 has connected there with an air inlet pipe 20, by means of which air is supplied to the chamber 2! which is located beneath the ?re pot. Extending thru the air pipe or conduit 29 is a main oil supply pipe 22 and a smaller pipe 23 which conducts gas to a '35 pilot nozzle located within the ?re pot, indicated by the numeral 24. . The bottom wall of the ?re pot II is raised at its center and has an opening 25 therethru V which is surrounded by an upstanding collar "40 26. Engaging over the collar 26 and resting upon the bottom of the ?re pot is an upwardly extend~ ing air tube 21, the upper end of which opens into a hollow sphere 28. This tube is provided with a lower and an upper circular series of air :45 an insulation structure, invthat the interior of inlet openings 29 and the sphere is also pro the unit has only air therein which serves as an insulation medium. The furnace structure as a whole is preferably of circular cross-section vided with air inlet openings 30 which are ar ranged in a circle or in circles in a horizontal 50 and the water unit 2 has the integral domed top 4 thru the central part of which a passageway 5 is formed for the escape of products of combus tion. In this passageway may be secured the end of a flue pipe 6. Pipes 1 are coupled with the outer wall of the plane above the top edge of the ?re pot. The pilot pipe 23 extends upwardly thru the opening 25 and then later-ally thru the wall of the air pipe 2‘! and terminates near the bot tom of the ?re pot and in relatively close prox imity to the side wall thereof. The terminus of the pilot pipe is also preferably located near ‘36 2" 2,136,317 the inlet end of the oil pipe 22 so that oil enter ing thru the pipe 28 will be immediately ignited. Disposed exteriorly of the furnace structure is a receptacle 3! and this receptacle is connected at its top and bottom with the water jacket or water-?lled area I4 surrounding the ?re pot, by the pipes 32 and 33 which, as shown, connect respectively with the top and bottom portion of the receptacle [4. An outlet pipe 35 is connected 10 with the top part of the receptacle 3| and a cold water inlet 36 extends thru the top of the receptacle to a point adjacent the bottom there 25 30 v35 that in addition to providing a novel means for e?iciently consuming oil for heating fuel pur 10 poses, the invention provides a novel means for be employed for returning cooled water to the cell 2 after it has passed thru radiating units, and such means may consist of a pipe coupled domestic or for radiation purposes. into the lower part of the unit 2. In installa tions where the domestic water heater 3| is not desired, the unit I4 may be employed as a booster for the heating system and in this case the upper part of this unit may be coupled with the water jacket 2 by a suitable pipe, as illustrated in clotted outline and indicated by the numeral 31, and a return flow pipe line may be run in to the lower part of the unit or water jacket M, as indicated at 38, where such pipe is indicated in broken lines. It will thus be seen that the circulation of hot water in the system will then be made more rapid by reason of the fact that the water in the unit ! 4 will become highly heated quickly and in rising will force the water from the jacket 2 into the system. When the furnace is used in this manner, the pipes 32 and 33 may By the novel construction of the ?re pot where by the vaporized oil rises to the top of the pot as plenished thru this pipe. 20 area 39 flows thereinto thru the opening [1, and the amount of air entering in this manner may be effectively controlled by regulating the position of the plate l8 relative to the bottom II]. From the foregoing it will be readily apparent supplying domestic hot water and employs for this means a water jacket for the ?re pot and there is thus obtained the double function of preventing the ?re pot, which may be of metal, 15 from becoming heated beyond a desired degree, and simultaneously providing hot water for either of so that as water is drawn off it will be re 15 air will be mixed in the ?ame from the area 39 which is formed between the furnace wall and the wall 9 of the unit 8. This air rising thru the As previously stated, any suitable means may be coupled together or the upper one may be replaced by a plug to close the upper part of the jacket and the lower pipe 33 may be coupled with the cold water side of the house water 40 system so that additional water may be run into the system when necessary. In the operation of the present oil burner, the oil as it is ?rst introduced thru the pipe 22 into the lower part of the ?re pot will spread over 45 the bottom of the pot and will be ignited from the pilot 24. As the ?re pot heats up the newly introduced oil will be immediately vaporized and the constantly increasing temperature of the ?re the same becomes heated so that when the sys tem is running properly the flame will be at the top only of the ?re pot, the pilot 24 will be ex tinguished while the furnace is in full operation by reason of the fact that the gas entering thru 25 the pilot tip will be shut off from the necessary oxygen for its combustion. After the furnace has shut down and the ?re pot begins to cool, the ?ame will subside and return to the bottom of the pot where it will again ignite the gas from the 30 pilot tip 213 before the remaining vaporized oil is all consumed and the furnace becomes com pletely shut off. What is claimed is: 1. An oil burning furnace, comprising a casing, 35 a ?re pot in the casing and supported above the bottom thereof, said ?re pot having a bottom having a central air inlet opening, means forming an air chamber beneath the bottom of the pot and having said opening communicating there with, means in the pot for receiving air from said opening, and carrying it upwardly and discharg ing it in spaced horizontal planes in and above the ?re pot, means for introducing air into said chamber, means for delivering fuel liquid into the ?re pot, said pot and chamber being spaced from the casing providing an air passageway sur pot will cause the ignition area of the vapor to rounding the pot, an outlet in the casing above the pot for the escape of fuel gases, and a damp 50 rise until the lower part of the ?re pot will be er controlled air outlet in the bottom of said completely ?lled with vapor and the ignition or burning thereof will take place at the top. This vapor will be supplied with the proper amount of air necessary for its complete combustion, 55 thru the opening 25 and the openings 29 of the vertical air pipe 21, the air passing ?rst thru the chamber 2| where it will be heated to a certain extent. It will thus be seen that as the ignition plane for the oil vapor rises in the ?re 60 pot, air will be admitted into the pot and will mix with the vapor so that a thorough combus tion of the vapor will take place. ' The arrows indicate the course followed by the air entering the furnace thru the pipe 2'! 65 and from the apertured sphere 28, and it will be seen that as the oil is vaporized the air en tering will strike the side walls of the ?re pot and will be de?ected upwardly and as it passes from the top of the pot additional air will be 70 discharged as indicated by the arrows, from the sphere 28, so that complete combustion will take place and a blue-white ?ame will be developed. This flame is spread by the air from the sphere 28 against the sides of the water cell or jacket 75 2 and as it strikes this part of the structure some chamber. 2. An oil burning furnace, comprising a casing, a ?re pot in the casing and supported above the bottom thereof, said ?re pot having a bottom having a central air inlet opening, means form 55 ing an air chamber beneath the bottom of the pot and having said opening communicating therewith, means in the pot for receiving air from said opening and carrying it upwardly and discharging it in spaced horizontal planes in and 60 above the ?re pot, means for introducing air into ' said chamber, means for delivering fuel liquid into the ?re pot, said pot and chamber being spaced from the casing providing an air passage way surrounding the pot, an outlet in the casing above the pot for the escape of fuel gases, a damper controlled air outlet in the bottom of said chamber, a wall extending upwardly from and forming a continuation of a wall of the air chamber to the top of said pot and in spaced 70 relation with the same and spaced from the casing, and said wall being joined to the pot at the top and at the bottom thereof and forming a jacket chamber thereabout. 3. An oil burning unit for disposition within a 2,136,817 furnace casing, comprising a body having a ver tical side wall and a bottom wall, said bottom wall having an air opening therethrough, damper means disposed adjacent said opening for regu lating the ?ow of air therethrough, a ?re pot within said body having an upwardly and out wardly ?aring side wall and a bottom wall raised at its center, said bottom wall of the ?re pot hav ing an opening therethrough, said ?re pot side wall being joined with the top of said body side wall, a horizontal wall between the lower part of said ?re pot and the body side wall forming an air chamber below the ?re pot, means for introducing air into said chamber, a fuel oil 3 pipe leading into the lower part of said ?re pot, a vertically disposed pipe arranged centrally within the ?re pot and having its lower end in communication with said ?re ‘pot bottom open ing, and a hollow body upon the upper end of said pipe and extending partially above the top of the ?re pot, said pipe having an annular series of air openings adjacent said ?re pot bottom and a second annular series of openings adjacent the top of the ?re pot and within the same and said 10 hollow body having an annular series of air open ings disposed in a plane slightly above the plane of the top of the ?re pot. COMINARDO RIALDINI.