US1455175A - Burner - Google Patents

Description

` mmm May l5, 1923.

C: J. SHERWOOD BURNER Filed Sept. lO, 1919 IN VENTOR v M 0 W m y n Patented May l5, 1923.

referia 'o eaLYLn J. suns-Woon, or SAN raaNCreCo, eriLrroaNi-a, AssrGNoR 'ro coENco., oF

SAN FRANCISCO, oargrnoaNrA, CORPORATION or CALrronNrA.

Y BURNER.

Application filed September 10, 1919; Serial No. 322,938.

To al! 107mm t may concer/n.'

Be it known that I, CARLYLE J. SHnRWooD, a citizen of the UnitedStates, residing at the city and county of San Francisco and-State of'California. have inventednevv and useful improvements in Burners, of which the following is a specification.

This invention relates to an oil burner,v

variable load are prohibitive in cost when .considering small installations.

One of the objects of the presen-t invention is to provide a steam ato-mizing fuel burner employing `oil or the like which `is suitableeither for large -or small installations and .which is providedivith means in the burner proper actuated either'by the oil` oratomizing agent under pressure, or both, for automatically varying' `the sizeof the fires or the quantity of fuel burned, thereby eliminatingthe necessity of employing;Y automatic .controlling devices such as thermo-` stats, lpressure reducing valves, etc. and other ,extra attachments 4now employed in the `larger plants,` and. furthermore, per- Init-ting economical fuel regulation Whether it be in large Cr small installations. f Another object ofthe invention is to pro- `Videla Amanual control whereby the quantity of fuel or atomizing agent employed may be regulated independent ofveach otherio'r in unison.

Eurther objects will hereinafterappear. Theinvention consists of the parts andthe construction, .combination and arrangement of parts as hereinafter more fully described andclairned, havinga reference to the accompanying drawings, in Which- Fig. 1 isa central, vertical, longitudinal section through `the burner and the automatic mechanism Wherebyit is actuated.

Fig. 2 is a cross section on the line2--2 .of Fglthe Fig. 3 is -a cross section on the line `3--3 of Fig. 1.

Fig. 4f is a front `view of the burner nozzle. Referring to the dra-Wings in detail and particularly to Fig. 1, A indicates a casing which is provided with tivo intake openings, one `for oil, as indicated at 2, and one for steam, as indicated at 3. The opening' 3 communicates with a chamber 12 and the openinlrQ with a chamber 2', said chambers being formed Within the casing A as shown.

A -aecured tothe toi-Ward end of the casing or screwed into the same, as shown at 4, is a pipe 5 on the outer end lof which is secured a burner nozzle 6 of suitable construction. `Slidablymoiinted interior of the nozzle '6 is a valve 7, in the outer surface of which is formed a series of tapering grooves or slots 8. The valve 7 is secured to the thread end of a corrugated expansible tube `f9, the opposite end of which is secured Withina central `nipple 10, said'nipple being threaded into the Wall ofcha'mber 1 2.

The oil `inlet supplying connection 2 through the chamber 2 communicates With the pipe 5 or an annular passage 11 formed exterior of the corrugated expansible tube While the steam supplying connection communicates through the chamber 12 With the interior ofthe corrugated tube or 4annular passage 14 formed Within the tube. Positioned centrally of the tube and extending longitudinally through the same is a valve stem 15. The forward end of this stem passes through the valve 7 and `grooves 16 somewhat similar to those shown at 8 are `formed in the stem', these grooves serving` the `function of regulating1 the volume `of atomi/zingsteam employed, as will hereinafter be described While the lgrooves 8 serve the `function of raqiilatingthe quantity of oil or fuel consumed. The opposite end of stem 15 extends through the central chamber 12 and a stuffing box 17 While the extreme outer end or the `portion exterior of the stufling box passes through a nut 18. The nut proper is turnably mounted in a bracket extension 19 formed on the casing A and `it may be locked againstturning movement bymeans of a lockinut 20. The nut 18 is threaded exteriorly for the reception of the lock nut 2O and interiorly to engage threads 21formedon the stem. The stem is otherwise provided With ya .handle 22, the

\ that I have provided means for automatifunction of which will hereinafter be described.

The (,orrugations formed in the expansible tube are thread-like in formation and the purpose of employing an expansible tube as shown is to provide means for automatically regulating the discharge of oil and steam through the valve 7, that is, variations in pressure either in steam or oil, or in both, when passing through the annular passages 11 and l-lwill cause extension or contraction ofthe expansihle tube,by the force which it exerts against the corrugated sides of the tube, plus the pressure against the valve 7 and thereby moving the valve 7 and consequently regulating` the discharge of steam and oil passing through the burner nozzle 6.

For the purpose of regulating the expansible action of the tube 9. I provide a key 28.

`This key is carried by the stem 'l5 and is in reality nothing more or less than the plate (see Figs. l and 2) which passes through a slot 24- formed in the stem l5, the outer ends of the plate being provided with threadlilre projections to engage the thread-like corrugations formed in the tube. The pitch existing between the threads formed bythe corrugated tube 9 and threaded key 23 is equal to the pitch of threads between the stem 15 and nut 18.

The plate or key 23 may be turned in unison with the stem or its position may be advanced or retracted within the tube; and it may be advanced orretracted in unison with the stem l5 without turning the stem if it is desired to adjust the position of the valve 7 with relation to the nozzle 6, and thus,

increase or decrease the port area. formedv between the nozzle and the grooves 6.

In actual operation, it can be seen that I have provided an atomizing burner capable of handling oil or similar fuel, and, further,

cally regulating the discharge of the fuel and for manually regulating the discharge of fuel. Similarly, that an atomizing agent may be employed and that the volume or quantity employed may be automatically or manually controlled. rThis is accomplished in the following mannerz' lli/'ith the burner disposed at the entrance of a furnace box under a boiler, it is obviousthat the burner is connected with a source of oil supply under pressure, as a pump not here shown; similarly, that the atomizing agent or steam employed will be supplied by a pipe l 3a `directly coniiectedwith the boiler. Vheu oil and steam are delivered to the burner, it

can be seen that the oil will escape through vthe annular passage 11, the channels 8 and the yatomizing nozzle 6. Similarly, that the steam admitted will escape through the central chamber 12, the annular passage 14, the grooves i6 and the nozzle 6, the atomizing Leffect being obtained when the Steam and oil meet within the nozzle and discharge through the opening 6l formed therein.

Any variation in steam or oil pressure will have a certain effect on the eXpa-nsible tube 9, that is, the valve 7 sei-ves as a partial closure for the pipe 5 and the expansible tube 9, and it is therefore obvious that variation in pressure will tend to expand or contract the tube 9 as before described, thereby imparting a movement to the valve 7 which will automatically vary the iiow of steam and oil through the nozzle. Any increase in pressure will cause extension of the tube and forward movement of the valve. rfheports formed between the grooves 8 and the nozzle will thereby be reduced in area and similarly the ports formed between the grooves 16 and the forward end of the valve will be reduced. A decrease in pressure of oil or steam will permit partial contraction of the tube and thereby retraction of the valve which increases the areas referred to and consequently the volume or quantity of steam and oil discharged.

The position of the valve 7 in Figi, is such that eXtreme inward movement to the left has been reached. The grooves 8 formed in the valve are shallow at their inner ends and taper angularlv outward. Conversely, grooves 16 are shallow at their outer ends and have their largest area and depth at their inner ends.

For purposes of explanation it might be stated that the admission of steam to the inner ends of the grooves 16 may be considered as constant, and if such is the casezthe discharge of steam will then be controlled'by the area presented at the outer ends of the grooves. For instance if valve 7 moves fo'rwardly or to the right,v see Fig. l, the discharge area at the outer ends of the grooves 16 willdecrease and hence theflow of steam will be lessened. The discharge of oil will also ybe less as the shallow inner ends of the grooves 8 will decrease inarea and therefore decrease the amount of oil discharged. Again, if the movement of the valve 7 is to the left, the area of the groovesS will increase at the inner end and a larger quantity of oil will discharge. The area presented by the outer ends ofthe grooves l6will similarly increase and the volume of steam discharging will increase;

From the foregoing description it should be apparent that positive automatic regulationv of the fuel and the atomizing agent employed is therefore obtained without resortfeature of the invention, it is obvious Athat hand regulation isdesirable. Such regulation is easily obtained inthe present instance,

and is accomplished by reitherturning the stein or by movine itbcdilyin aloiigitudisa nel direction. lt it is desired to turn the .stein 15,it is merely necessary to tuinthe handle; .Thestein may then be retracted lie:regulated'Without disturbing the oil tlovr.

Again, it it Ais desired to increase or de- ;crease theV uantitv of oil discharoed. it is merely necessary-to sli glitly unscreiv 'he loci;

the l nut and turn the ,nut 18 While holding `the 'tube '9 existing' betvveen the lrey 23 and .nipple 10 has a tendency to always draw the stem 15 tirava-rally and therefore the `shoulder 'of the nut 18 is continuously drawn against the bracket 19. Forthis reason when the iiut 18 isiturned and the handle 22 ,held stationary, the stein 15 must be retracted or projected depending .upon the direction Yin which the nut 18 is turned. rlhe .bodily movement of the stem 15 ivill likeivise dranY the lrey .which vin turn through :the tube 9 vwill likewise move the valve 7 `with relation to the nozzle 6, thereby decreasing or 'increasing the `area formed between Athe nozzle and grooves 8, and consequently increasing and decreasing the quantity ot oil vdischarged Without increasing or decreasingthe iiovv ot' the fatomizing agent.

.lt can, therefore, be seen lthat means are proifided `for manually increasingand decreasing,` the tloiv ot the atomizing,` agent `or tor `manually increasing` or .decreasing` the lion" ot the tuel discharge `and that these regulations may be obtained independently oi" each other. Again, it is possible to increase or decrease the tloiv ofthe a'toiniiiing agent and fuel employed in unison either by automatic action or by inanual operation, the automatic actionbeing obtained by the i en pansiblc action of the tube 9 and the manual operation by turning' the handle anais andthe nut 18 in unison, such nioif'einent permitting retraction or projection of 'the i'alve andthe stem in unison.V

Vilhile the foregoing' description describes the invention inn combination ivith a tuel burner, l Wish it understood that the auto` matic 'and manual control here produced may be' used tor various purposes, for instance, in the governing ot' fuel and oil pumps, Water pumps, steam engines, tui'- -bines, etc. or 'it can be generally applied for the automatic. and manual regulation et the loiv of any fluid relative to changes in pressure of thatfluid changes in pre iiaiidle22 stationary. :The tension of burner as here shoivn Will supply the needs of either small orlarge boiler installa` 'tions Iand should .materially increase the `economy 'oit fuel employed and insure a steady boiler pressure under 'variable load asthe operation oi theburner will be entirely' automatic once installed.

Another important feature ot the present invention is the thro ze iormation ot the corrugations in the expansible tube and the hey Within the tube engagingv the thread-like corrugations. Byre'l-erringtoFig. 1 it will be seen `that the hey is secured in the stein and is therefore turnable `in unison ivith the stem Within the/tubel` or itmay he bodily advanced or retracted in unison with the stein. This last named is ot' great iinportance as it provides a means whereby the .expansibie action of the tube may be ad- `justed. By providing this means it is possible to regulate the burner sovthatit is equally sensitive and automatic in action, whether operating; under duid pressures ot' ou pounds or 150 pounds, that is, it the burner is opei'atedunder a comparatively lonY pressure,

say, Gllpounds, is obvious that a more sensitive expansible member is required under such conditions. rllhe key will theretore assume a position adjacent the fixed end of the expansible tube. It the fluid is delivered tothe burner under high pressures, say 150 pounds or more, "it isobvious that the expansibleaction of the tube must .be decreased, as the movement would otherwise be too great. i :it is therefore only necessary to advance the lrey .with relation to the tube `so that it livill assume a position closer to the valve whereby the luidloiv is regulated. In other ivords, ashorter section ot tubing `is depended upon for automatic ico'ulation When operating under liivcjh ni'essuiesand a longer section ti e i is eiiiirloye-ffl when Working under louer i ressures. i

lllhile the apparatus here is incre or less specitic in construction, i ivi. understood that various changes iii the ''."oi'in` proportion and ici-al details ci' de in may be resorted to iiitliinthe scope or the appended claims. tflimilarly, tl

,l materials and linish o: the several parts employed ma. be such :is the experience and judgment ot the manufacturer may dictate or varying conditions may demand.

Having thus described iny invention, what I claim and desire to secure by Letters Patent is: V

1. An automatic fluid flor.' regulator comprising a casing, said casing, having,- two separate chambers formed therein, means for admitting a fluidunder pressure to one chamber, means for admitting another fluid under pressure to the other chamber, a discharge pipe cominonicatingf With one chainber, discharge nozzle on' said pipe, an eX* pansibletube connected With the Walls of second-named chamber at its one end and its 'other end extending to the discharge `nozzle,said tube adapted to be expanded or contracted with variation in pressure of both Vor. either fluid, and a valve actuated by said expanding and contracting movement adapted to regulate the discharge of both fluids.

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2. An automatic fluid flow regulator comprising a casing, said casing having two separate chambers formedtherein, means for admitting a fluid under pressure to one chamber, means for admitting another` fluid under pressure to the other chamber, adischarge pipe communicating with one chamber, a discharge knozzle on said pipe, an eX- pansible tube connected with the second- "named chamber and with the discharge nozzle, said tube adapted to be expanded or contracted with variation in pressure of both or either fluid, a valve actuated by said expanding and contracting movement adapted to regulate the discharge of both fluids, and manually actuated means for adrjusting the position of the valve independent ftube adapted to be expanded or contracted with variations in pressure of either or both fluids, and a valve attached to said tube adapted to automatically regulate the discharge of the fluids.

4f. An automatic fluid flow regulator comprising a casing having two separate cham* bers formed therein, means for admitting a fluid under pressure to one chamber, meansk for admitting fluid under pressure to the other chamber, a discharge pipe connected with the first-named chamber, a discharge nozzle on said pipe, a corrugated expansible tube within the discharge pipe communicating with the second-named chamber, said tube adapted to be expanded or contracted .with variations in pressure of either or both fluids, a valve attached to said tube adapted to` automatically regulate the discharge of the fluids, and manually-actuated means operable independent of the erpansible tube for adjusting the position of the valve to increase or decrease the discharge of either fluid or both. i

- `5. An automatic fluid flow regulator comprising a casing having two separate chambers formedthereim means for admitting a fluid under pressure to one chamber, means for admitting a uid Vunder pressure to the other chamber, a discharge pipe connected with the first-namedV chamber, a discharge nozzle on said pipe, a corrugated expansible tube within the discharge pipe communicating withthe second-named chamber, said tube adapted to be expanded or contracted with variations in pressureof either or both fluids, a valve attached to said tube adapted to automatically regulate the discharge of the fluids, a stem extending longitudinally through. the casing, the expansible tube and the valve, and manually actuated kmeans for moving the stem and valve longitudinally and for turning the stem to advance or retract the same with relation tothe valve.

6. An automatic fluid flow regulator comprising a casing having two separate chambers formed therein, a discharge pipe connected with one of said chambers, a dis` charge nozzle on the end of said pipe, means for admitting a fluid under pressure to the first-named chamber, means for admitting a fluid under `pressure to the second-named chamber, a valve having a central passage formed therein and a series of grooves on its outer surface, said valve co-operating with the nozzle, means for conveying the fluid under pressure delivered to the secondnamed chamber and discharging the same through the central passage inthe valve, means in said passage for regulating the discharge of the second-namedA fluid, said means comprising a rod extendinglongitudinally through the casing, the discharge pipeand the valve, and a series of grooves .formed in the outer end of the stem and communicating with the central passage formed in the valve.

7. An automatic fluid flow regulator comprising a casing, means for admitting a fluid under pressure. a discharge pipe, a discharge nozzleA for the escape of the iluid, a valve having a series of grooves formed in its outer surface co-operating with the nozzle to regulate the discharge of the fluid, an expansible tube in the casing and in the discharge pipe adapted to bef expanded or contracted by variations in the fluid pressure and means for transmitting said eX- panding or contracting movement ofthetube to automatically regulate the position of the valve.

8. An automatic fluid flow regulator comprising a casing, means for admitting a fluid under pressure, a discharge pipe, a discharge nozzle -for the escape of the fluid, a valve having series'of grooves formed in its outer surface co-operating with the nozzle to regulate the discharge of the fluid, au expansible tube in the casing and in the discharge pipe adapted to be expanded or contracted by variations in the fluid pressure, said tube being rigidly secured at one end and 'secured to the valve at the opposite end to automatically change the position of the valve and manually actuated means for contracting or extending the tube to adjust the position of the valve independent of the automatic extension or contraction of the tube.

9. An automatic fluid flow regulator com` prising a casing, means for admitting a fluid under pressure, a discharge pipe, a discharge nozzle for the escape of the fluid, a valve having a series of grooves formed in its outer surface (2o-operating with the nozzle to regulate the discharge of the fluid, an eX- pansible tube in the casing and in the discharge pipe adapted to be expanded or contracted by variations in the fluid pressure, said tube being rigidly secured at one end and secured to the valve at the opposite end to automatically change the position of the valve, means for admitting a second fluid under pressure, a central opening` formed in the valve through which said second fluid is adapted to discharge, said second-named fluid passing through the expansible tube when discharging, and means actuated by the expanding and contracting action of the tube for automatically regulating the dis charge of the second-named fluid.

l0. An automatic fluid flow regulator coniprising a casing, means for admitting a fluid under pressure, a discharge pipe, a discharge nozzle for the escape of the fluid, a valve having a series of grooves formed in its outer surface co-operating with the nozzle to' regulate the discharge of the fluid, an eX- pansible tube in the casing and in the discharge pipe adapted to be expanded or conn tracted by variations in the fluid pressure, said tube being rigidly secured at one end and secured to the valve at the opposite end to automatically change the position of the valve, means for admitting a second fluid under pressure, a central opening formed in the valve through Which said second fluid is adapted to discharge, said second-named fluid passing through the expansible tube When discharging, a rod extending longitudinally through the casing, the eXpansible tube and the central passage in the valve,

grooves formed in the rod, said grooveseX-y tending through the central passage in the valve 'or the escape of the second-named fluid, and manually actuated means for retracting the rod, the tube and the valve or for projecting the same With relation to the nozzle.

11. An automatic fluid flovv regulator comprising a casing, means for admitting a fluid under pressure, a discharge pipe, a discharge nozzle for the escape of the fluid, a valve having a series of grooves formed in its outer surface co-operating with the nozzle to regulate the discharge, an expansible tube adapted to be expanded or contracted by variations in the fluid pressure, said tube being rigidly secured at one end and secured to the valve at the opposite end to automatically change the position of the valve, means for admitting a second fluid under pressure, a central opening formed in the valve through which said second fluid is adapted to discharge, said second-named fluid passing through the expansible tube when discharging, a rod extending longitudinally through the casing, the expansible tube and the central passage in the valve, grooves formed in the rod, said grooves extending through the central passage in the valve for the escape of the second-named fluid, and

manually actuated means for retracting the rod, the tube and the valve, or for proj ecting the same with relation to the nozzle, said means also adapted to project or retract the rod independently of the tube and valve.

l2. An automatic fluid fioW regulator comprising a casing having an outlet opening' formed therein, means for admitting the fluid under pressure, a valve adapted to regulate the discharge of fluid through the outlet opening, a corrugated j eXpansible tube in the casing, said tube having corrugations of thread-like formation, means for rigidly securing the tube at one end, means securing the opposite end of' the tube to the valve, a

rod entering the tube, a threaded key on the rod engaging the thread-like corrugations in the tube, and n'ieans for securing the rod and key against movement, and varying the eXpansible length of the tube.

13. In a device of the character described, a casing, a corrugated tube Within said casing, means for securing one end of the tube, means -for delivering a liquid under pressure to the interior of the tube, and means for delivering a separate liquid under pressure to the casing, and valve member secured to the end of the tube operable for simultaneously decreasing or increasing the flow of a liquid from the tube and casing.

In testimony whereof l havehereunto set my hand in the presence of tivo subscribing Witnesses. i

CARLYLE J. SHERWOOD. VWitnesses Trios. CAsrBnRc, WM. H. BAUER.

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