US398418A - And the racine hardware manufacturing - Google Patents

Description

(No Model.)

A. D. LINN. MEANS EUR AUTOMATIGALLY REG-MATIN@ THE FLOW 0E LIQUID FUEL To INJEGTOR BURNERS POR STEAM BOLLERS. No. 398,418.

Patented Feb. 26, 1889.

N FETERS. Prom-Lichngupher. wasmngnm. D. C.

UNITED STATES f PATENT OFFICE.

ALLEN D. LINN, OF RACINE, 'ISCONSIN, ASSIGNOR TO THOMAS KANE, OF CHICAGO, ILLINOIS, AND THE RACINE HARDVARE MANUFACTURING COMPANY, OF RACINE, 'ISCONSIN.

MEANS FOR AUTOMATICALLY REGULATING THE FLOW OF LIQUID FUEL TO INJECTOR-BURNERS FOR STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent NO. 398,418, dated February 26, 1889. Application filed June 11, 1886. Serial No. 204,845. (No model.)

' hydrocarbon oil and deliver the same, mingled 'with atmospheric air," either directly into the irebox or into a retort, from which it is delivered i'nto the re-box of a steam-boiler.

The aim of my invention is to maintain a uniform steam-pressure by so applying the pressure ofv the steam that it will properly control the supply of fuel.

To this end the invention consists, essentially, in combining with a steam oil-atomizing jet, in which the steam induces the fioW of oil, a steam-actuated diaphragm and two Avalves connected thereto-one in the steamvsupply-pipe and the other in the-oil-supply pipe-so that an increasing steam-pressure 'acts with doublev effect to lessen the rate of diminishing the force and volume ot' the steam-` jet, so that its capacity to feed the oil is less' ened.

In the accompanying drawings, Figure l represents a top plan view of the device. Fig. 2 is a horizontal section through the center of the same on. the line a: @c ot Figs. 3 and 4. Fig. 3 is a transversevertical section of the same on the line 'y 1j of Figs. l and el. Fig. 4i is a transverse section on the line z' ,e of Figs. l and 2. Fig. is a view in the nature of a diagram illustrati-ing theconnection of the de Vice Witlr the steanrhoiler ani-l. with the retortbu rn er th ereunder.

Referring to the drawings, A represents the frame of the apparatus, commonly cast complete in one piece.A .4

B represents a steam-receiving chamber provided on one side-With an inlet-neck, a,

\ through which steamv is constantly delivered by a pipe leading to the stems-space of the boiler. Thechambe'rB consis Y cup-like body having a tubular deliveryneck, t), screwed into the frame A, as shown in Figs. 2 and 3. The top ot' the cap B is closed by a exible diaphragm, C, of sheet metal or other equivalentmaterial, adapted to yield under the internal pressure ot' the steam. To this diaphragm 'is attached a central hub, d, Which receives and carries the threaded end of a va1ve-spindle, e. This spindle extends down- .ward through the tubular neck oli the chamber, and is provided with an enlarged head or valve on its lower end, so that asthe diaphragm is raised by the pressure of the steam this head will close the passage through the neck to a greater or less extent, and thus control the delivery of steam from the chamber b. The deliverymeck b communicates Witha steam-passage, f, by which the steam 4is conducted to a tubular nozzle or spindle, g, through which it is discharged into .an outletpipe, C.

The nozzle g is tapered externally at its delivery end and seated lloosely within a conical opening or mouth, 71 in the frame; the construction being such that an annular space exists ,around the mout-h of the nozzle. This space communicates with an oil-passage, i, leading through the frame, as shown, and communie-ating with an oil-supply pipe, D. The steam issuing from the nozzle induces a constant inward fiow oiv oi l, which, passi ng around the exterior of the nozzle 71, meets the steam issuing` from its end, the result being thatthe oil is atoinized, partially vaporized, and in combination with the steam delivered 'fornibly through the pipe C.

In advance of the nozzle g and of the point at which the oil is broughtI in Contact with the Steam I provide one or more airinlets, through which atmospheric air is constantly d ra-Wn and caused to combine with the steam and oil.

In order to resist the steam-pressure upon the'diaphragni, I employ a vertical spindle, Z, bearing at its lower end upon the center of the diaphragm and passing at its upper end thro/ugh a s-t-ufling-box in the main frame into the oil-passager'. Around this spindlelinount box ol." the boiler for combustion; butv it is' a spiral spring, n, bearing at its upper end against av stationary collar and at its lowei` end upon a collar, 0, threaded on the spindle that' it may be adjusted to vary the tension ot the spring.

When the pressure of the steam becomes so great as to overcome the resistance ofthe spring and move the diaphragm', it 'has the 1o twofold effect ot' closing the valve e, so as to diminish the supply of steam to the injectornozzle, and also by raising the spindle Z and causing the lat-ter. to diminish the flow of oil through the pipe 1', the oil-delivery and steamdelivery being both diminished automatically through the action of the steam 'upon the dia-- phragm'.

In order that the delivery of oil and steam may be regulated each independent-ly of the zo other, .I mount' in one end of the frame a threaded spindle or valve, @which en ters the oil-passage directly opposite the spindle l, to centrol the oildelivery and thread the spindle e into the center ot'. the diaphragm, as shown,

2 5 so that. it maybe adjusted in relation to the diaphragm. to regulate. the steam-delivery. I also mount. in themain fra-lne cocks' q and' fr, by which tfhc oil and4r steam passages may be completely or partially closed at will.. 'I he 3o parts above described may be construct-eiland united in any appropriate-manner; but in order to cheapen and facilitate the construction and-to admit of the interior of the apparatus being readily inspected and freed from ob- 3 5 struct-ions, 'it' necessary, 'I prefer to adopt the 1 details of construction represented in. the

drawings, and which I will now describe.

The mainframe A is cast complete in one piece. The oil-.passage i is formed by' drilling 4o two holes at right angles to each other entirely through theltrame from side to side-and then closing the ends of these openings by screws 5311s shown in the several figures. Byremoving these screws the passages are opened, so

4 5 .that a wirc or other cleansingnstru ment may be passed completely through thema. The

nozzle g isthreaded externally at one end and screwed into a .threaded hole in the body.

This construction admits of the nozzle being 5o adjusted longitudinally'in order to varythe size of the annular space around its mouth,

as the character of the fuel or other circumstances may renderl necessary.

'.lhesl'iindlcs I and p arc mounted in a single tubular guide, t, which is drilled longitudinally and centrally and inserted through the frame, as shown, its inner end being provided with a gland, u, which serves to retain the packing around the spindle and alsovas a 6o collar or bcarin'g'to support one end of the spring p. AIn line with the nozzle I propose to apply a blow-oit cock, fr, which may, however, be omitted.

4 The combined'oil, steam, and air issuing 6 5 through the pipe Cin the orm of a misty vapor may be delivered directly into the firepreferred to extend the pipe into 'the tireboxin the 'form of a coil',A its inner end being capped or otherwise closed and provided with a series of tine pert'orat-ions for the delivery ot' the vapor. rlhe vapor issuing from these openings is ignited, and serves the double purpose of heating the boiler and ol' maintaining the coil or retort in-a highly-heated condition, the e'ectof which is to completely vaporize the materials passing therethrough, and to raise them to a very high temperature, so that.

they are delivered at the point of ignition in 4the best possible condition to insure a perfect combustion. I

y-It is to bc particular] y noted that in my apparatus the feeding ot the oil is effected directly by and is dependent upon the steamjet, so that variations in the force or volume of the jetare Vfollowed by corresponding variations in the rate of oil-delivery. It is further tobe noted that the steam-pressure is applied not only to vary the steam-jet, that itmay opcrate as above mentioned, but also to positive ly vary the size of the oil-passage. It will vbe perceived, therefore,that the rate of oil-delivery is in my apparatus dependent, first, I

nponthe pressure and consequent velocity of the steam; second, upon the variation of the jet due to 'the' action of `the steam-controlling valve,'and, third, to the variation -in the 0il' ilnw dependent upon the separate oil-controlling valves.

I am aware that a steam-actuated dia` phragm has been used to control the action of a steam-oil-atomizing jet, the yregulation of the oil-flow being wholly dependent upon variations inv the'steam-jet. I am also aware that a diaphragm urged in one direction by steam andin the opposite direction by a spring has been connected with cocks controlling the delivery of air and of oil to a furnace, the airpressure being maintained by external independentmeans, and the fuel-delivery being e'lifected otherwise than by a steam-jet. I am also aware that a steam-actuated diaphragm has been employed to controlthe delivery of gas from an external sc'urce to a boiler-furnace, and to such eombinationsI lay'n claim.

I believe myself to be the tirst to apply the lsteam-pressure of a boiler to regulate an oilcontrolling valve and also to regulate a steamjet by which the oil is directly fed.

Having thus described my invention, what lV l claim is l. The combination of the steam-boiler, the oil-supply pipe, its nozzle fordelivering oil to 'the fire-box, the second nozzle arranged consage, the valve in the o il-passagc, and `the (liary phragm connected with bot-h valves and communicating with the steam-space of theboiler, whereby variations in the steam-pressure are loo caused to positively vary the flow of oil by the oilcontrolling valve, and further vary the flow by regulating the steam-j et. y

2. In an oil-burning boilenand in combination with the steam oil atomizing jet, two Valv's, one in the steam-passage and the other in the oil-passa ge, and the steam-actuated diaphragm connected with and operating bot-h lyalves,whe'reby the oil-passa ge and the steampassage are both diminished; by increase in the steam-pressure, so that the delivery of oil is positively limited to correspond with the diminution of t-he steam-jet.

3. In combination with the frame or body having the distinct steam and oil passages therethrough, thc intermediate steam-Chaim ber B, with a flexible Wall or diaphragm, thc internal valve, e, att-ached to the diaphragm and controllingthe flow of steam through the steam-passage, and the spindle l, seated at .one end against thediaphragm and acting at one in the oil and the other in the steam-passage, and two independent valves, q r, for ar bitrarily controlling the oil and steam delivery.'

5. In combination with the oil pipe or passage fz'., the valve-spindle l, and the diaphragm connected therewith, the independently-adjusta-ble spindle p, arranged in opposition to the first named spindle, as described and shown.

6.' In an oil-burning boiler, the combination of a steam oil-atomizin g j et, a valve controlling the oil-delivery therethrough,' asecond valve controlling the steam-delivery therethrough, and valve-operating devices, substantially as' shown, connecting with the boiler and subject to the stean'i-pressure therefrom, whereby an increase in pressure is caused to diminish the oil-supply and also to diminish the ow of the 'steam acting to propel the oil.

7. In combination with a frame or body having the passage QI therethrough, the tubular body i, inserted through the body and provided with the two Valve-spindles entering from opposite sides.

In testimony WhereofI hereunto set my hand, this '7th day of J une, 1886, in the pres-y ence of two attesting witnesses.

ALLEN Dj LINN.

Witnesses:

J. F. BICKEL, E. G. DURANT,

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