US971920A - Fluid-circulating apparatus. - Google Patents

Description

- G W.y NISTLB s 1 1.=L.1G1P.Po-RD.

` FLUD CIECULATIG APPARATUS ArrLrouIorr Hmm un. i1, 1m. f

man@ oct.4,v1'91o. i

3G.v w; NISTL l 'Rg I.. simon.' n* FLUID'CRGUTING APPARATUS. Hummm; nu 1.13.11. 1909.

' f Patented 001;. 4, 1910` 2 SHEETS-SHEET 2.

, 'Mimese f j wherebythe pressure yis equalized and the .Gnomiz-1' w.. nIs'rLnor MUsiEGoN, MICHIGAN, 'AND Ronnafr L. G'IFFORD, or carcasas,` y y f ILLINOIS. Y .l f v ATo all Iwhom. it may concern: .lie it known that we, (leonor: W. Nis'rLi-i andv Romain' L. (heroin), `citizens of the United States, residing,` respectively, at the cityofMuskegon,county of Muskegon, and'- State -of Michigan, and at the city of (,hi`

f cago, county of Cook, andState of Illinois,

`proveinents in Fluid `Circulating A have invented certain new anduseful Im- Pa ratas, of whichv the following is a speciriica` tion.

This invention relates to improvements in.

ap aratus for circulating motive fluid and' pressnreto said condensed fluid to equalize ply,

. static head.-

vthe pressure on either-side of the latter and' permit it to renter the boiler by its hydro` Among thefobiects of the inventionl are to provide an apparatus of the above charactery whereby` the exhaustluid is first condensed and theniestored to the boiler as feed sup'- without the aid ofr a pump or other l external source of pressure, and these operaface condensation from a suitable source of' tions carried on continuously' and automatically ;g to provide an a paratus in which the collected exhaust tlui is condensed by' sur- Lsup ly, the latter automatically cut of at pre eter-mined intervals and livefluidthen automatically admitted at boiler pressure'to the tank containing the condensed fluid condensed exhaust permitted to renter the f boiler by gravity; to rovide an apparatus l steammay of this character in vw iich the above operations are automatically regulated by simple valve mechanisms which are in turn controlled by the exhaust tluid itself; to provide an apparatus of the character referred to in which .the operations of collecting and condensing the exhaust fluid and restoringy the latter to the boiler are'carried on periv odically at predetermined intervals without any external regulation orrcontrol. In the present instance we have shown our apparatus' for circulating motive fluids as applied'l to :a steam heating system although' it-1s apparent that motive fluids other than than that shown vin the drawings.

In the apparatus here shown Figure 1 kFL'UIVDCIRCUL1TING' APPARATUS 1 Y Specicatioaot Letters Patent. Applicationfiledlareh 11, 1909. Serial'No.11:82,(598.

bev used and for purposes other Patented oct. 4, 191e.

ing system equipped with our improved apthrough lines 2-2 of Fig. 1 andshowing designates diagrammaticallya steam heatparatus for :carrying out our method. Fig. I

2 is a horizontal sectional view taken the condensing coils Within the tank inV which the exhaust steam is collected. -Fig.. 'A 3 is `an enlarged .detail viewofthe dia- 1. phragm and connected'valves which regulate the admission of the live steam tothe condensing tank and the'cold Water tothe condensing coils. F ig. 4 is an enlarged sectional view of the piston valve which controls thediaphragm. f j

Y Referring to Fig. 1,71 designates the boiler which is connected to a radiator 2 by the vof usual pipe 3 leading from the steam space 'y side oi' the boiler. From the opposite side of the radiator is connected the exhaust pipe 4 which cylinder 5 mounted iii-any `suitable nianner above the water line of the boiler l. this exhaust pipe 4 is interposed a check valve opening into the tank, for a pur- 'pose hereinafter described. The lower side yof the tank 5 is provided with .a depressed portion 5 'to which is connected a vertically l extending pipe i' the lower end of which communicates withthe. boiler 1.. lVithiir this pipe 7 is interposed an ordinary check leadsv into a condensing tank or,

Iny

.valve Sipening into the boiler'. It will thus be seen that normally the steam circulatts from the steam space side of'tlierboiler out through the radiators and back into the condensing tank 5 in the usual manner.' The steam a`s it is condensed in the tank5 in the manner hereinafter described collects in the lower part of the tank and in the pi 7, but inasnnieli as the hydrostatic hea( 'of the condensed exhaust is obviously much less than the boiler pressure, the cheek valve 8 will remain closed and the condensed steam will not' be able to renter the boiler as feed water. L.

As heretofore stated the exhaust, steam after it has been collected in the tank 5 is first condensed, the condensing liquid cut.v off and live steam admitted at boiler pressure into the tank to e yualize the pressure and permit the ch'eck va ve 8 to open through the ply of the buildingv toene end-of the tank 5 l and is there connected toaV coxu'lensing coil 10. yThis condensing coil is seatedk within the tank near the upper side of the latter, and is supported at one end by a rod 11 extending`V through the sides ofthe tankrand at'. its other end enitends throughand is supported'by the removable end closure niember 12. The outlet end of the. condensing coil 10 is'connected--to a'waste pipe 13 leadingr to the sewer vor-.backto the cold watersupply. lVithin this branhjpipe Qleading from the cold water supplyisintroduced a globe. valve 150i well known type hereinafter more particularly described.

ln order. that live steam may be admitted to. the condensing tank 5 to: equalize the pressure, the'bran'ch steam ipe 14 is con` nected at one end to the mam pipe .leading from the `high pressure side of the boiler, and at its other end to the tank asshown at 17., T hesupply'of live steam to the tank from the pipe 14 is normally cut otby a globevalve 16, generally similar in oOnstructionV to" the valve lrreferred to. The val-ve disks which control thepassage of water and.k steam through the respective ipes 9 and 14 are so `connected together t iat, when one valve is open `the other will be closed. .To this end a flexible diaphragm 17 is mounted in the diaphragm casing 18 supported upon a suitable bracket 18 fixed to the top of the tank 5 in the present instance. lTo the upper side of this diaphragm 17 ris connected the valve stemll) carrying atits upper end the valve disk 20 of the upper valve 16. The valve disk 22 of the lower valve 15 is similarlyvconncctcd to the diaphragm by means of its stem 21. As seen *more clearly in Fig. 3 .thesevalve stems l!) and 2,1 work through suitable bearings or guides'l and, 20' carried reslxctively by the diaphragm casing 18 and the castings of the globe valves. 'l'llesei'alac"stems and connected disks are so arranged that when pressure is appliedy to the lower :side of thel diaphragm 17 the valve 15 will be. opened and the val-ve 16 closed; exact-ly the revelse conditions/result when pressure is applied to the upper side of the diaphragm. Ikscribing now the manner of operating this diaphragm 17 so as to open ard close the valves, a relativelysmall supply pipe 23 isv connected at one end tov the vbranch pipe 9 leading from the cold water supply, and at its other end tothe piston va vve, designated' as a whole 24. It is to. be noted that the pipe 23 conm-iunicates with the cold water supply pipe 9 at a point. between the inlet ofthe latter and its globen-'alvell Accordingly the. supply of water tothe pipe 23 is not. Ain any way affected by the action of the glol-)e val-'ve 15 referred to.

Referring now more particularly to Fig!A 4 the valve 24 comprises a casing 25' provided with an elongated-and vertically extending valve chamber 26.` This valve chamber'2 communicates atits upper and lowen ends with the supply pipe 23 by means of suitable luy- passesor ducts 27, 28 respectively2 and a' commonin-letport 29. At. itsopposite side the. valve casing 25' is provided with two outlet' orts 30,131 and a common exhaust rt 32. Thev ports 30-and 31 are `controlle respect-ively by closure rings 34, oicarried by a valve piston 33 mounted to ,reciprocate in vvthe valve casing 25. `These rings are so are' ranged that when the piston is near its upper limit of movement as shown in F ig. 4. the lower poit 3l will communicate with the by-pass 28 rndsupply pipe23, while at. the same time the portBO will be positively cut olf from the upper by-pass 27 by means ou itsv closure ring 34. 'Exactly the reverse con-4 ditions existl when the piston isshifted to its lower position. The middle orexhaust port 32 'alternately communicates with the upper and lower ports` 30 and' 31 respectively and to this port connected. a waste or exhaust pipe 37. In order to cushion the stroke of the piston 33 the port 31 is set,v above thefinlet of theby-pass 28` so Vthat; part ot the water in the lower` endA of the-chamber will be trapped upon the descent of the piston and serve bo cushion theY stroke of the latter. The piston valve is connected with the diaphragm casing as follows: To the upper portl 30 is connected a pipe- 39 which leads to and communicates with the upper side of the diaphragm 17 while in the same manner a similar pipe 10 communicates at one end with the port 31 and at its other end with the lower spideof the diaphragm.

From'the 'foregoing it will be seen that when communication is established between the port I and the by-pass 28 pressure will be admitted ,to the lower sideV of the vdiaphragm 17 through thc-pipe 40; while at the same timertle upper portBO will be 'cutl olf from the ily-pass' 27 and opened" to `the exhaustv port 32. Accordingly the valve stems will be shifted upwardly, the valve 15 opened and the `corresponding valve 16 1 closed. 'hen the piston is shifted in the opposite direction exactly the reverse conditions result pressure being admitted to the upper Vside of the diaphragmY and removed from the lower side thereof. The condensing,` water and the live steam will thus be alternately `admitted tov and cut oil from the tank'.` Y 1 'Describing now themanner of operating the piston 33, extending transversely of the condensing tank 5 near one end thereof is rotatably journalcd a-.rock shaft 41to which is connectedl a vfloat 42 b v means. of a stem 43. One end of this roek'shafr. 41 extends'through the side of the.A tank as shown more clear-ly in Fig. 2 and to vthis extensionofthe sha-ft is rigidly connected a rocking lever The free endrof this lover arm 4l is provided 1 with a laterally projecting stud 45y whichV new @avanzo Y v. 3

rides within a link 46 mounted upon the upitsl lower v side elevated above the bottom' of per end of the stein of the' piston`33. The connection between the lever armftt and the linkf45 is in ell'eet a lost motion connection, so that the pistoimvill be actuated only when the lever arm* v44 isapproximately yat its limit of movement `in either-direction. In

otherv vwords during the greater part of them'ovement of the tloatthestud lit''will ride loosely in Vthe link 46 and will only actiate the latter as the float reaches tsflimit ,of movement in either direction. l The ,mannerof operating the piston is apparent from the above description. Before the condensed exhaust steam has Vaccumulated infthe .bottom of the tank the-float will, of course'be down and the piston .rod raised to the position, shown in Fig. 4. At thisl time the pipe 40 leading tothe lower side of the diaphragm is in conununication withthe'supply pipe 23, the valve 15 is open and' the corresponding valve 16 closed ras heretofore described. AS the water ofcont'iensation accumulates in the pipeI 7 and tank 5 the float 42 will gradually rise, and as it approachesits upper limit of movement the stud'45 will engage thelovver end of the link .4G and shift the piston downwardly.V` This cuts off-thesupply of water to the pipe 40. and opens the latter to the exhaust 37. Tlrepressure on the lower side of the diaphragm isaccordingly removed. At the same time .communication is established between the supply ypipe 23l and the'pipe 39. leading tothe upperside'of the diaphragm whereupon the valve stems '19 and 2l are shifted downwardly, the valve 15 closed and the valve 16 opened. Livesteamnow rushes into the condensing tank o through the branch pipe 14 and eqnalizes the pressure upon opposite sidesof the water of condensation'in thetank'. The check valve 6 interposed in the exhaust pipe 4 will, of course, prevent; the live steaml from backing up vagainst u the exhaust and. inasmuch as the pressure on the opposite sides of ther vater of condensation is equali'zed the latter will y gravity open thecheck valve Sand reenter the boileras feed water.

f. The operation of the a-pparatussliown will..

be apparentV from the foregom description and neednot ltherefore be vdcscri `ed in detail'. l-Iov'ever, it is to be'particularly notedv that the various opera-tions of our methods are cam'ied on continuously and automatican'y;

that the various valve mechanisms have simpleand positive actions and that ,the inter-v vals at which,` live steam` may be admitted to the ,tankmay be easil'yregulated' by adjusting' the leverage mechanism which. controls the4 piston valvel 24;.

lle claim as our invention:

1'. The combination -with a motive fluid syitem,of a boiler for supplying fluid to s'aid system, a condensing tank connected to the exhaust side of said system and having mechanism and/fa conduit connecting-the tank to they boiler to' permit thc-condensed exhaust fluid tov rentcr the lattcn'aud novmally closedfvalvel mechanism interposed in said conduit. 1 A

2'. AIn a fluid circulating apparatus, t vthe combination of a boiler, a circulating system external to the boiler, a condensing tank connected to the returnsidc of said system, surface condensing apparatus for subjecting the steam in said condensing tank to the action of a condensing'mcdium,Y means for intermittently interrupt-ing the action of said condensin' medium, connections for conducting "livefstcom substantially at boiler pressure to said condensing tank, a conduit connecting the lower part of said tank withr said boiler, and automatic valve mechanism controlling the admission ofvlive steam to said condensing tank. H ,n

3. Ir. a Huid -circulating apparatus, the combination of a boi r, a circulating system external to the boiler, a condensing tank' Vruism controlling the flow of condensing medium, and means operated by the accumulation of water of condensation for 'controlling both of said automatic valve mechanlSmSu I y' 4."Th'e' combination with a motivelluid system, Yof'a boiler for supplying live fluidto said system, a condensing tank connectedV to the exhaust side of said s stem, Iand, having its lower sideelevat'eda ove the bottom of said' boiler, a condensing coilL seated 1n said tank and connected to an external source of condensing fluid, means for supplymg Afluid at substantiallyboiler'pressure to sai Itank, automatically controlled valve mechanisnrregulatin the supply o condensine' fluid te said coi and thc supply of live fluidi to said tank, anda conduit connecting said tank to the boiler and normally closed valve mechanism interposed in said condu'* .5. In a' fluid-circulating apparatus, the

15Min' tl i il eonibinntionof a boiler, a closed circulating system external tothe boiler, acondensimr tunk connected tothe return side' of sniil system, aclosed surface condensing coil', :1r-. ranged. within' Suid tank, vulve mechanism for controlling the flow of condensing mcdium through said coil, 'connections for conducting live steam substantially atboiler pressure to said condensing tank, vnlve mechanism' controlling said connections, a conduit connecting,r the lower pzirt'of -su'id tank with said 'boileiyvalve mechanism controlling said conduit'. a source ofypoxver, iudependent of the hydrostatic head of eollected )vater of condensation, for actuating said first two vnlvemeclianisms, und menus actui ated bythe accumulation ofr water of con densation in said tank or controlling said source offpower. K y Y l 6. In a fluid-circulating apparatus, the combination' of a boiler, a. closed circulating,r system `external to the boiler, n condensing tank connected tothe return side ofsaid system, a closed surface condensing coil :irranged within Suid tank, valve incclmni'sm for `controlling the flow of condensing 'mcdium through said coil, connections-fol.' conducting live.V steam rsubstzmtiall)- :it boiler pressure tosztid condensing tank, Valve mechanism controlling said connections, a iconduit' connecting tlxelower'part of said tank with said boiler, valve mech-:mism controlling said conduit, a source of power,` independent. of the hydrostatic liendof collected Water' of condensation, for actuating Suid 35 first two 4valve mechanisms, and means actuated by the accumulation of Water of condensation in said/'tank for controlling said source of power, said valve-actuating.mechanism embodyingmeans whereby the several 40 vulves are actuated in definite timed relation.

GEORGE W'. NISTLE. ROBERT L. GIFFORI). 'itnesses to signature Vof vGeorge XV. `Xie-le y 1". J. HANSEN,v 'J. COX.vr I` 'iinesses to signature of' Robert L. Gifford: l

M. BoLsTizR',

lLizAlzrz'rn Lum.

i i f i i. i

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