US1243396A - Fluid-fuel-regulating system. - Google Patents

Description

T. H. FERGUSON.

FLUID FUEL HEGULA'TING SYSTEM. APPLlcATloN FILED mp1. |914.

1,243,396. Patented oct. 16,1917.

. l 2 SHEETS-SHEET u H. FERGUSON; FLUID FUEL HEGIJLTING SYSTEM.

l .APPLUJM'HEN HLED IVEB. 7. 19N. M 1,243,396. -Y Fammi oen 16,1917.

sl' Ll THOMAS H. FERGUSON. OF PORTLAND, OREGON.

FI.UID-FUELREGULATING SYSTEM.

Application filed February 7, 1914.

To ad Lr/on/ it may confer/L:

Be it known that I, 'l`uou.\s ll. linucusox` a citizen of the United States, residing at Portland, iu thc county of l\lultnomah and i, State of Oregon, have invented certain new and useful lmprovemei in Fluid-Fuel- Regulating Systems. of which the following` is a specification.

y invention relates to fuel control apparatus for furnaces adapted to the cousumption of liquid fuel, and has for its ohiect the economization of fuel through means employed for automatically regulatin the con'ibustion. My invention is appli (mle to furnaces heated by lirly l fuel 0r oil burner in which the tuer is .ed by steam generated by the furnace, and it comprhends novel means for regulating the l draft of the furnace, the How of oil, and the Supply of steam relatively to the operative requirements of the apparatus, and all lookinU-toward uniformity of combustion and, in consequence thereof, toward economy of operation.

-"What 4constitutes my invention will be hereinafter specified in detail and succinctly set forth in the appended claims.

In the accompanying drawings:

Figure 1. is a front elevation ot' a furnace and boiler equipped with a preferred form of embodiment of my invention.

Fig. 2 is a side elevation, partially in section, of my steam and oil regulator, directed particularly to illustration in detail of the \`stam-acti1ated damper, control mechanism.

.laton threadedan oil vvalve shell Figr 3 is a vertical section, partially in elevation, of my steam and o i] regulator proper. p

Referring to the characters 1 th- 'lrawings, 50 indicates a. built-ju furnace., provided with usual draft doors 51 and a vllue 47. The presence ofa. boiler isindicated by the numeral 4:1, and' a damper 4.2 having a counterweight 44, is shown as provided Within theliue 47. The parts above described may be of any usual or preferred type, construction and dimensions. Coming now to consideration of instrumentalities more directly involved iu my invent ion, 1 indicates the main steam shell of my regu- To its upper end, preferably, Vis 2, and to its lower end, preferably, is united, as by similar means, the crown 5, of a diaphragm case Whose lower part is indicated by the numeral 25. A crown of bolts 5a uniting the Specification of Letters Patent.

Patented Oct. 16, 1917. Serial No. 817,248.

parts 5 and secures between them a fiexible diaphragm 24 which operatively divides the diaphragm case. Upon its lower side the diaphragm 24 is supported by a spring 27 seated in a reinforcing cup or plate 26 disposed against the diaphragm and a cup 29 adjacent to the end of the case-member 25 which carries coaxially an adjustment screw 32. A guide core 28 extends from the plate 2li through the spring 27to limit the adjustment of the cup .29 which is recesseifl for the reception of the lower end of the core. Apertures 30 and 31 with cup 29 and rasc-n'ieml'ler respectively, provide constant atmospheric pressure within the member 25, or, in other Words, upon the spring-engaging side of the diaphragm. 24.

Above said diaphragm a. nut 33 abutting against a. washer 34 threaded to a reduced end of the core 28 which penetrates the diaphragm and unites the core and parts appurtenant thereto. 10 indicates a valve stem which, at its lower end, screws into the empty upper end of the nut 33 and is secured by a lock nut 22.. Passing with a piston-fit th'rougl'i `the bottom of shell 1, the stem 10 extends to a ball valve 8 within the shell 2 and is connected thereto. 9 indicates the valve seating part for the valve 8 and establishes conm'lunication between compart` ments a. and of the shell 2. A pipe G united to the shell 2, as indicated at 7, makes couununication between the conipartment a and a source of liquid fuel supply, preferably under pressure, not illustrated. A ipe ll is adapted to deliver the liquid fuel rom compartment ZJ of the shell 2 after itpasses the. valve 8 to any burner adapted'for its combustion and not illustrated but assumed to be in proximity, purposes, to the boiler 4l.. The stem 10 in passing through the shell Zbelow the compertinent uraltes a stcamtight-lit so as to shut oil' conununieation between the respective contents of the shells 1 and 2.

A, partition wall o divides the interior of the shell 1 into two chambers d and e, the former communicating through a steam supply pipe 13 with the boiler 41, and the latter making 17, operative conununication with the illustrated burner above referred to as being connccted likewise with the pipe 11.

The partition c is perforated by a. valve seating port 18 which is controlled by a valve 16, secured, as by a nut 15., to the stem operative for heating l0. The disposition ot the respt-etive valves` 8 and lf3 u pou lheirromumn stem l() 1s such as to provide.y through rruiprmfation ol' the f stem. for the simultaneous opening and rios ing of the ports J and 1S. respectively. and thereby a,Simultaneous supply ot 't'uel and .'steam'to the respective pipes ll and l?, whois@ relative, size, may he made the means contemplated ,tor regulating the relative. quantities of the. suppl \y ot earh. The rhumher l is in operative eonnuuni lation with the diaphragm 24, as through a steam duct 23, in they bottom ot' the shell 1.

1Q, indicate a recording;r steam gage or register which7 being well known in the art as a means of recording fluid pressures, may he of any preferred type. and is unueeessary to fle/Scribe herein.

The ahove described mechanism constitutes apparatus for the automatic regulation, in the manner hereinafter desrrihml, ot steam and tuel supplvv with econoomI results and is in so tar completion itself. hut l pre fer to simplify those results hy the invor- Y flows poration with the steam regulai ion at" means for controlling the. damper 12. wherein' the generation ot Steam is a lieoted at' its s'ourre.

Accordingly l provide the shell 'i with a branch 14 which terminates in the upper half of a. regulator shell 3, with whirh a lower half 4 is united to confine hetween them a Hexible diaphragm ,11). plunger 3T is operativel)7 united to the diaphragm 19, as hy a hutton plate Ztl, upon the. redueed vend of the rod and a uut 2l threaded thereto. The plunger 3T is transversel)v penetrated hy a hearing' aperture l() whose opposite. sides engage a lever 35 that is pivoted.l as indiated at f" luiwt-en lugs' lf) h v whirh hinge ronnertion is made at its lower end with a rod 4.5 whose lupper end in` in.` a like manner. `ronneeted with a crank arm 43 of thel `damper l2.

The operation ot' taff apiaratus may he understood from the following description. Liquid tuel or oil is' freely admitted through 'the pipe, (i to the tou'iparlment fr whenee it into eon'ipartiuent o and through .pipe l1 'for ronslnnption. it the valve S he open. Likewise steam from boiler 41 through vpipe 13 lenters rhauiher l and thence.passingvto rhamher n. it' the. `valve 1G he open,v issues through pipe 17 and is led away` to'serviee in conjunction with the oil .supplied through pipe 1.1. The pipes (3 and thrneo is derived from the pipeS 17 and il. respectively.

- lSteam pressure from the chamber l enter ingr through tle vduct above the diaphragm 24 tends to close the` valves 8 and lo. liv the aid of the adjustment screw i2 the spring 2T may be set to the desired resistanee to counterbalance the steam pressure upon the side ot the diaphragm opposite the sprinzgr 2T. ln this wav. h v halaneing` the steam pressure against the spring pressure the pressure of steam necessary to rlose the valves may he deteruiined and preserihed. (`onsecplentl v the eomhuStion supported 'trom the ontents of pipes ll and 17 `n|a v be kept autoxnatically regulated and thes'team pressure in the boiler at substantial uniformity.

A further cheek upon steam generation ma)v he imposed h v operation of the damper 4;. and I,l therefore` contemplate the use of the auxiliar)` regulatorembodying the diapiragxul 1U tor that purpose. Steam pres- .sm-ll in the rhaiuher Si is normali)v maiutained a ronsiderahle extent helow the pressure in the boiler or on the diaphragm 2i. due to (he point` oi" its rolnmunit-ation with the regulator ras-ing; ahove the valve 1G: but upon the opening r ol said valve. due to a failing oli' ot the steam pressure in the boiler` the. pressure in the chamber 3' increases and the diaphragm is depressed to umintained drive the plunger 4H out\vardl This com uiunifates niolio'n to the lever 35. whi'h` in turn. through the rod 45. tends to open the damper 42. I draft ot the'thle 4T preparatory to an increase of heat under the boiler ll. s the press-arr inrreases in pipe l pressure, will also iurrease on diaphragm '24. thereby1 pullin e' down valves 8 and 1G. As the valves b" and 'lo are rlosing. pressure is then decreasin;y on diaphragm 19. therein allowing the halaure weight il to t'all hachY and close the damper li whirh routrols the heat in tlue il. keeping the hot gases trom escaping to -th atmosphere. as in Common praetire, and

.52. which rises to the regi-sterilig gage '12.

and h v reason ot the rising' and falling of the diaphragm 2l. due to variations in pres-y sure thereon. the pointer will register on the chart the amount oi opening in parts 9 aud lia. and thereby indirate th!` amount of oil being consumed.

lu the operation of my deviceit will be rl`he ettert is to increase the..

apparent that the fuel supply may be fed by l gravity, or pressure, as Well as by stearr.. Steam passing through the port 18 and on to the burner is necessarily reduced in pres- Isure where it enters the pipe 14 and is controlled by the position of the valve 16.

The pressure of thev steam below the valve 1G and the oill above the ball valve makes a balanced construction Which is easily operable by the diaphragm Iand readily responsive to slightfluctuations in the pressure of the steam. The damper is Well balanceo. and a slight movement of its controlling diaphragm 19 results in a considerable movement of the same. By using a reduced pressure to o erate the diaphragm 19 I am assured of su icient pressure, even when the boiler pressure is low, to effect the desired results. The supply of steam pressure to said diaphragm `19 is dependent upon the pressure of the steam passing directly to the burner, and thus the movements of the damper Will be in exact accordance With the re uirements of the flame.

t `vill be understood, of course, by one skilled in the art, that upon proper adjustmtnt of the screw 32, in the rst place, the variations of steam pressure and consequent `movements of the valve stem 10 will be slight and vibratory or of momentary duration. I prefer for that reason, among others, to employ the recording gage 12 .Whose record will indicate the variations of steam pressure, .and serve as a guide to an operator in `making any re-adjustment of the screw 32 in order to secure the best results in operation. l

Havingthus described my invention what l claim and desire to secure by Letters latent is- 1. The combination with a boiler and a burner for the saine, of a fluid fuel regulating system, comprising Ia steam pressure opelated diaphragm, a spindle on or e side of the diaphragm, separate oil and steam inlet chambers, and a beveled seated valve for controlling each of said chambers operated by the spindle, said steam inlet being below its valve arri the oil inletvabove its valve, whereby the pressure. of'theoil and steam acts upon opposite faces of, the valves to effeet a colluferlmlancc.

'2. lThe. combination with a boiler =and a burner therefor, of a fluid fuel regulator comprising a steam pressure operated diaphragm, separate oil and steam in lct chaml bers, a spindle on one side of said diaphragm passing through said cl'ianibers, bevel-seated val-vesI operated by said spindle for control ling the passageways through saidV chamlars. and separate steam and oil outlet chambers internlediate the inlet chambers, sa id steam 'andoil inlet chambers being positioned at the outer sides of their respective valves, whereby the steam and oil enter the regulator in opposite directions and art upon the faces of their gespective valves to effect a counterbalance.

3. The combination with a boiler and a burner therefor, of a fluid fuel regulator comprising a steam pressure operated diaphragm in communication with the boiler, separate oil amlsteam inlet chambers, a spilt dle on one side of said diaphragm passing through said chambers, valvesl operated by said spindlev for controlling the passagevvays through said chambers, separate steam and oil outlet chambers intermediate the inlet chambers and communicating with the burner, an auxiliary flexible diaphragm operated by steam pressure supplied solely by the steam outlet chamber of said regulator, and a draft device controlled by said auxiliary diaphragm.

at. The combination with a boiler and a burner therefor, of a fluid fuel regulating system comprising a easing, va steam-pres` sure operated diaphragm therein in communication with the boiler, a steamy inlet for said casing also in communication with the boiler, a steam outlet for the casing in direct communication with the burner, a valve between said inlet and' outlet chambers operated by the diaphragm to control the ,passage of steam therethrough whereby the valve is closed When the steam pressure in the boiler is high and opened when said pressure is low, and a supplementary lloxible diaphragmand casing for controlling the operation of a damper adjacent to the. burner, saidca-sing having communication with said steam outlet chamber for supplying steam under pressure to oierate said supplementary diaphragm, Where y the opening and closing of the damper is made dependent upon the pressure of steam in the burner. i

The combination with a boiler and a burner therefor, of `a fluid fuel regulator, comprising a steam pressure operated diaphragm, separate steam and oil passageways leading to the burner, and a beveled 'seated valve in each of said passageways controlled by said. diaphragm for regulating the admission of oil and steam to the burner in' accordance with the variations in the pressure of steam in the boiler, said valves being so arranged as to receive the pressure of the steam and oil from opposite directions to effect a counterbalance of the forces when ,operation of the valves are in closed position, and each of said valves being of equal area on its opposite lfaces, whereby they are independently balanced when in open position.

f. 'Ihe combination with a boiler and a fuel burner therefor, means for supplying an admixture of steam and oil to said burner in regulated 'quantities-in vaccordance with tho pressure demands of the boiler, a draft 4 '1,243,396 ,b (hariw fur Suhl lmriwrE und menus cuulrullml Htviun uml oil is (zut off :md when the boiler liv stv-11u'. |'irvssurv from smid burner tu :wtupressure is low the Steam und Oil are admit ul'u sixil llrnltlcrima tml lo th(l burner, and means controlled by T. Tho. combination with n lmilur uml n thu rL-igiil-(ltwl :uid reduced steam pressure in 15 5 liquid liyilrmrnrlmn l'ucl hui-um' therefor, furl the burner to actimto u draft device lherefor.'

supply ine-.ms for unid burma-1n,nwnnsfnrsup- In testimony lwreof I ulrlx my signature. lilyiuglj :stv-1m frum the holler to sind burner in thu presen@ of two witnesses. lo linx \\|t.h thi furl.V iur-Luis rogulntml by THOMAS 1l. FERGUSON. boiler prifsmiru lmcontrollingthpassngeof 4VVitnessSieS: 10 steam mul ml uit() :nul liurucr so that. 'when EDWIN E. HECfguElri, the boiler pgfssure is high the passage of H. A. ARMSTRONG.

Images