US1626116A - Oil burner - Google Patents

Description

A v 1626,11 April 25 1927' r. HARDINGE 6 OIL BURNER l med May s. 192s 2 sheets-sheet 1 Il I fz? l/f/z /0 f frank/[2z f/ardnye April 26V, 1927.

E H'ARDINGE OIL BURNER Firled May 5. 1923 2 Sheets-Sheet 2 oil burners,

starai earner ries.

FRANKLIN HARDINGE, F CHICAGO, ILLINOIS, ASSIGNOR T0 RDINGE BROTHERS, -v

mc., or enrcaeo, trainers, e. consonancia' or inni-nor ori.. ananas.' l

l application. aies' may a ieee. serial. no. esaeee. i.

My invention relates to improvements in and is particularly concerned with the provision of an oil burner comprisj ing a pilot light for igniting the oil spray 5 formed by the atomizei: of the burner, and means for controlling the supply of gas to said pilot 'light and thesupply of oil to said burner.

It sometimes happens, during the operation of an oil burner, that the ame becomes extinguished,4 and unless means Vare provided for relighting the combustible mix- 'ture formed by the burner. or for shutting 4off the supply of fuel to the burner, considlerable damage may be done. rlhis extinction of vthe ame is sometimes caused by Water or some other impurity in the oil passing through a small orifice, and for the time belng interrupting the supply of oil to the atomizer ofthe burner so that for an instant ued, and the flame consequently becomes extinguished.

One of the objects of myl invention is to provide an oil burner, and particularly an oil burner in which mechanical means are used for atomizing the arranged to ignite the combustible mixture whenever it becomes extinguished. l Another object of my invention is to pro- Y vide a pilot light, comprising avplurality of jets so arranged relatively yto the walls of the lire box in which the burner is located that the current of air produced in the rebox by the burner will `cause theA jets ofthe pilot light to act as Bunsen burners, so asto insure the ignition of even the very heaviest grades of fuel oil. j Y

' Another object of my invention is to pro- 40 vide means for controlling the pilot light so r that it will consume only a veryjsmall quan- 'tity of gas when the burner is not in operation.

Another object of my invention is to provide means for shutting off the supply of fuel to the burner` whenever the burner is not in operation. This is f particular importance where the means for supplying fuel to the ,burner comprise a pressure tank which might continue for a short time to supply oil to the atomizer, even after the burnerhas ceased to operate.

A still further object of my invention is the combustible mixture isdiscontincih-with a pilot light my invention will appear progresses, reference `bethe accompanying drawings, partial section through a gas and oil control means of the furnace and oil burner embodying my inven-l Figure 2 is a fragmentary elevation of i. portion ofthe construction shown in .Fig-1 u re 1, showing certain details of construction of the means for controlling the How of gas to the pilot light and oilto the atomizer of the burner;

Figure Sis a sectional detail, partially in side elevatlon. showing further details of construction of the apparatus shown in Fig-` ures 1 and 2, and Figure 4 is a transverse section taken on line 4 4 ofFigu're 2.

Throughout the several views, similar reference characters are used for referringto similar parts, and theseveral sections are taken looking in the directions of the small arrows.

l have illustrated my invention as being embodied .in an oil burner comprisinga. suitable bed plate 5, upon which is removably mounted the base plate 6. At the inner end of this base late is a suitable head 7 in which is rotatalily mounted a. tubular outwardly flaring atomizer 8, the upper end of which is provided with suitable fan blades or vanes 9 for supplyin fuel discharged from t e knife edge 10 of the atomizer. The atomizer projects through an opening in a ring l11 forming art of rthey 4bottom 12 of the fire box of the hrnace.

The atomizer 8 is rotated by means of the motor 13, which is yconnected therewith through a suitable universal coupling 14, shaft 15 and connecting gearing located in the head 7.

Fuel is supplied to the atomizer by means of a pump 16 geared to the shaft l5, this pump being preferably of the gear ty e. The pum 16 withdraws the .oil from Sie tank 17 t rough the pipe 18, and delivers it throughthe pipe 19 to a pressure `chamber 20 from which it flows through the pipe 21 to the `stand pipe 22, which projects upair to the atomized g 26 is` placed in the pipe vl operator easily to drain `pressure chamber.

comprising positely disposed ports for communicatingv with the two sections of the pipe 21, and a;

n y wardl through lthe head 7 and the hollow spind e upon which the. atomizer 8 is mounted. l

For controlling the rate vof supply of fuel 5 to the nozzle,.I-provide a pressure regulat-l ing valve 23 which is located'in ya pipe 24 forming a by-pass between the upper end of the pressure chamber and the return pipe 25 which leads from the lower end of the 10 pressure chamber to the supply tank 17,

The construction thus far described is 2 0 merely illustrative, and forms no part of 'my present invention except asthe elements I thereof co-act with my invention about to be described.

The pipe the body member 28 having oplongitudinally extending bore 29 which communicates with the bore 30 ofthe body *3" member. A valve 31 is slidably mounted in the bore 29, and has an annular groove 32 formed therein which may be brought into registry withv the twoparts of the bore 30 so as` to establish communication between l5 these parts.

A bell crank lever 33 has one arm 33 thereof ivotally connected with the outer end of t e valve 31 by meansof a pin 34. The arm 33 is provided with a slightly elongated opening 35 1n which the pin 34 has a sate for the crank lever.

The arm 33" of the bell crank lever has a limited sliding movement to compenangulart movement of the bell 4.5 roller 36 secured to its free end. This roller travels in 4a groove 37 formed in aV collar 3.8

which is slidably mounted upon the shaft 15 and compelledl to rotate therewith by means of the spline 39 (see Fig. 3).,'which slides in the longitudinally extending slot vi eldinglv oppose 40 formed in the shaft 15.l

The shaft 15 has a second collar. 41 rigidly secured thereto by means o f a set screw 42, or in any other suitablemanner, Two

55 links 43 are pivotally mounted in slots 44 formed in opposite sides of the collar 38 by means of pivot pins 45. Anoth'er pair of links 46 are pivotally mounted in suitable slots 47. formed in opposite sides of the collar 41. Each link 46 has a bifurcated end for receiving one end of one of the links 43, and is secured thereto by means of a pivot pin 4,8 so as to form a flexible joint. A spring 49 is interposed between the two collars to the movement of the collar 21 has a valve V inserted therein" the flames,

38 toward the collar 41.- I preferably interi' ose an elongated sleeve 50 between thev collar 38, the spring 49 and-the shaft 15.

-The outer end of this sleeve, by abutting the tubular projection 51 of the 'collar 41, acts as a stop for limiti-ng the Iagainst movement of the collar 38 toward the col-v lar '41.

From the above description, it .will -be apparent that.

the dotted line position shown in Figure 3 so asto move the collar 38 toward the collar 41. This movement is transmitted to the bell crarl; Alever 33tlirough the roller 36, and causes the bellcrank lever to move about when the shaft 15 is rotated, the arms 43 and 46 will move outwardly to its pivot point 52, thereby withdrawing the valve 31' from the bore 29 a distance' s ufli.

cient to bring the annular groove 32 into registry with the two portions of the bore 30, and. thus permitting the flow of fueldto the atomizer.' A t In order to insure the continued -operation of theburner even though the flame is interrupted from time to time, I provide a pilot lightA 53 which is preferably in the form'of three jets located in the well 54 formedin the bottom of. the lire box. The tops of these jets are located below the inner surface of the bottom of the fire box, so that the air discharged from the atomizer 8 will not extinguish the flames of these jets. It should also be noted that the well 54 is located closel to the wall 55 of the fire box. -prefer to thus position the pilot light because I have discovered that in this position issuing from the pilot jets, assume the characteristics of the flame vof a Bunsen burner, when they are struck by the current of air from the atomizer. It is, of

course, understood that such a flame is very valve V, except that a boss 56 is formed onv one side of the body member of the valve V and has formed therein a by-pass 57 which can be controlled by means of the adjustable needle valve 58 to regulate the size of the flames of the pilot light 'jets when the burner is not in operation. It will, of course, be understood that the by-pass- 57 provides a passageway for the flow of a limited amount of gas around the valve V when it is closed so as to constantly maintain the pilot lightI in action.

The valve V is similar to that which I have above described for actuating the valveV, andv further .de-

Vactuated by mechanism sclgtlion ,thereof appears to be unnecessary. f enever the collar 38 moves toward the collar 41, upon rotation of the shaft 15, it opens'the-valve V as Well as the valve V and thus permits an increased quantit oi gas to flow to the jets ofrthe pilot hght. This increased-.Y-Quantity of 'gas produces a much higher flame in the fire box, and when this flame is struck# by the current of air.l

issuing from the atomizer, it, as stated above, assumes the -character of a Bunsen burner llame and continues toburn 1n this ,atomizer, and limiting the sup the pilot light to vthe amount which flows past '-204 manner as long as the burner is in operation. Whenever themotor stops, the spring 49 moves the collarv 38 away from the collar 41, and thus closes both valves V and V',

thereby cutting off the supply 'of .oil to the ply of gas to the valve 58 in the'by-pass 57.'r

While I have described the details of construction ofthe preferred embodiment of my invention, it is to be clearly understood that my invention is not limited to these details, 25

butk is 'capable ofy other adaptations and mddifications within 4the scope of the appended claims.

HavingY thus what I claim is: 1. The combination in an oil burning apparatus of a rotary atomizer, means for rotating the atomiz'er, means for supplying oil to the atomizer under pressure comprising a valve, a pilotlight for thev atomizer having a gas supply feed means With a valve therein, and common means actuated by the actual rotation of the atomizerfor opening and closing both said-valves.

, 2. The combination of an oil supply pipe for oil'burners; a gas supply pipe for the pilot of saidburners; valves in said pipes. one forregulating the flow. of gas and the other .for regulating the flow of oil; a motor; a governor actuated Y, thereby; andi means actuated by the governor for controlling the operation of said valves.

In witness whereof, I hereunto subscribe my name this 21st day of April, 1923.

FRANKLIN HARDINGE.

described my invention,

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