US903007A - Water-heater. - Google Patents

Description

l i I B. RUUD. WATER HEATER.

PPLwATxou FILED JAN. 6. 1900.

Patented NamV 3 19128A 2 SHEETS-SHEET 1.

W l @14M B. RUUD,

WATER HEATER.

nrmouros FILED un. e. woo.

903,007. Patented Nov.3,1908,

3 SHEETS-SHEET z.

ne eosgoova in the count EDWIN l. .'UD, 0F PITTSBURG, PENNSYLVANIA.

WATER-KEANE Toioll,makenuitl moment:

4,.Beyt.;lmoiwn-t at I, EDWIN, RUUD, of

Stateoff. emaylvenia., ave invented a cer-A tainemwmdfnseful Improvement in Waterh Heaters,- of which, improvement the. follow un-1i; a specification..

- Vpireaellt mventionrelatesimore particu.- larlyto, automatic water-heaters desiged te heat water'to be uaediaslhot water edo mastic or other purposes or to heat the water to. convertrthe saine into `steernhfein power, heating,- or other piu-pom They articula-r form of heater herein chosen tai ustrata -issued tome-under date ofv the invention. is of neral .clase orty which is exemplified in teraPatent oit e United States No, 610281,; runterland ptexnber 6 1898, butiaalsoap licableqiny otheptypesvot ther-.mollyl regulated?- and its object is to rovide eectve-andre.-

liable means1-where y. waste of gas,during. heatA periods im which iti is not desired-4to water, may be prevented, and liability'. to damage tothe .heating appliance or its connections, bythe application of heat in the absencev of a, properi suppl? off'water, or by the exeessiveap ication o heatwhenwatev is netdraivnogfrom the heater, due to the stia-king offthie` water valve mechanism, may -be efectuall obviated. Thel inventive idee. is capable o. being embodied ina variety of mechanicalstructures, one of which., fonthe purpose offillustration, is shown in the. accom-panyin drawings, but it is to be expressly unrestood that said drawings areV designed for the purpose of illustration only and notfr tile) purpose of definin the limits of the inventi In, reerencebeingfud to the claims for that purpose.

'The im rovement claimed is hereinafter fully set orth. y l

In saiddrawings: Figure 1 is a. vertical central sectionthrough a water heater illus-v tration,r an application `o,my= invention., amil- 2 and 3, similar sections through modified forms oLthe Water supply controlling mechanism..

lVy-` invention is herein shown 'as applied in. nnautomntic water heatingr ap aratus, the .water receptacle of which is in t e form of a. coil of pipe, 1, onev of the terminals of which is connected, by' an elbow, 1, t/i a water inlet pipe,.1", and theother to a tube, 12, which s, in turn, connected to anou-tlet pipe, 12a, leading to n. desired point'lof delivery,

speculation of meer natalia" animen nu :umn-y e, anni.fr "ieee metia.

of Allegheny and'l ga heating apparatus,

Patented 3," 1.908.-

auch as sp' 12?. It will be obvious that, if preferr thetube, 12, m' ht be interposed.- betweentwo sections oV the coil, 1,

asin Letterefatentl, aforesaid, The.

coil,1, which is supported on a oase or stand, .3, is heated by a malin gas burner or burners'. 4 ignited, by theitlame of an auxiliary li lit-- ingoi: pilot burner, 5aml gee i's supp ied to-,all,.oi'saidburnersffrom e. service ipe 6.

The pilot burnerz-v- 5, isconnccted directly with the service pipe, 6byta branch supply pipe, 11, and the main burner's,`4, are, connc'ted, by a branch supply pipe, 10, with av beE described.

The waterinlet pipe, l", of the heater coil, 1, leads into the lower end. of a valve Casin 55to thel u i: end offwhich is conA nocte a-water sup y pipe, 56, leading troni a, source. of watersupply under lsuliicient pressure` to, eilect the` traverse of water,

through` the. coil, 1. Communication bef tween the'pipes, 56,-and- 1"., is controlled by al piston, 57, Working in casing, 55, and constantly subject to the preesurein the sup- `onlyperforms the function oi a pressure element, but alsoy acts, in and of itself, as a water! supply valve, when moved suliciently downwardl bp theupnessure of Water on its upper side, it, in such case, uncovering recessee,\58,in the bore of theV casing, 55, 'tlnough which water is admitted from the 4supplyy pi e556, to the inletfpipe. l", and Said piston may, however, if preferred,A be employed to actuate an` independente weten Supply valve, 57', as shotvn im Figrzf?lr andv 3,x and such a construction is, `unglenmy invention, the mechanipal equivalent of an integral'piston and water supply jvalv i T Ae gasservioe ber-creasing. 59, w lich is preferabl formed integral with the casing, 55, o1ft e Water su ply valve piston 57, but which may be in ependent thereof, and a gas supply valve, seating on a partition in the casing, 59, controls communication between the ,las service pipe 6, through the-casing, 59, and n chamber, 7, connected to or forming part ofsaid casing. A gas regulating vulve, 7,

As shownin, Fig.. 1, thepiston, 547, not

tpe, 6, leads into 'a chamcontrols communication between the nhumber, 7, und a chamber, 7b, from wl'zich latter chamber the ln'nneli gne supply pipe, 10, leads to the ninin burners, 4. The piston 57, is fixed upon n rod erstem. 6i, und the uns supply valve, 60,'is lined upon n. stein iii-5, nud .scid stems nre connected, by links U--i and (i5, respectively, to opposite endo of n. lever, (Sli. which is pivoted centrally upon n .suitnble stond or hearing, 67., The opening movement of the water vulve piston, 57, being downward, and that of the gee supply valve, G0. upward, it will be seen .that seid valves areso connected that their opening movements are coincident and their closing movements .are also coii'icidentAv Av closing spring, (32, beurs upon the top of the ges supply vulve, GO, Said spring acting in opposition to the pressure of water upon the Water vulve piston, 57, and serving to sent the gas supply vulve when Suid preS-s'sure is insnliicient to overcome its teneion.

Figs. 2 and 3 illustrate constructions in each of which the piston, 67,is. es in the instance first described, subject to tlie pressure of writer in the supply pipe, 56, but instead or" also acting' as the water supply juive, it, in this case, actuates an independent water su ply valve 57a. As shown inA Fig. 2the valve, 57", is located below the piston, and controls direct `l:ommunicntion between the water supply pipe, 56 and the interior ofthe valve cesing,.55, to which the inlet 1b, is connected. The valve is nnsente the downward movemcntof the iiston, 57, to which pressure from the supp y pipe is imparted through a lateral passage, on the casing, and is returned to its scat by a spring, 57". In the construction shown'in Fig. 3, the Water supply pipe 56 lends into the valve canin between the piston, 57, and the water supp y valve, 57, and said valve, which controls, communication between he casing and the inlet pipe, 1, through a luterel passage, 55", on the casing, is unseated hy the contact of a collar, 61, on. the piston stem, 61, and. is seated'by a spring, 57", interposed between and bearing on the piston and the valve. embodying the Senne operative* principle, will readily suggest themselves to thcee. skilled in the art, und muy he mad'c Without departure from the essentiel features of my invention.

The gris regulating valve, 7, is actuated 'P by n thermostat; or thermal regulator, of any ngo y Other structurel variations,

suitable and preferredconstruction, which? in this instance, is 'shown as consisting o the tube 12, which is connected to the water heater coil, l, n' tube 13, whichis located within the tube, 12, and is formed of metal having :t comparatively high coefficient of expansion.

l tre-:f :at the otherA enf? cooper metal than the tube 13, und which projects; at one end outside of the tnbesglf: und 13. The projecting end 'of the rod, il, beers n vainsn pivoted level', l5, the free end of w lich cnrs against on adjustable set screw 1(l,'enfga.ring n thread in n lever, 16, 'which in pivte at one end, by, a pin, 16", to n bioiehct or Support, 16. The lever, 1.6, beurs, adjacent to its free end, against a nut, 17, wlich is adjustable on the stein. 18, of the ga. regulating vnlvig, und. o spring, 1S), hcnrson the vulve, 7, with a constant tendency to move it tovvnrds its sent, such tend cncy being connterncted by tinl contraction of the tube, 13, under reduction of temv )erm turc, which contraction, acting throng: the rod, 14, und the lever systemnpon which said rod bears, moves the gas recrulnting valve, 7 ,"to a. greater or less extent rom its seat.

vThe specific form or construction of ther mostat above described, which is., substan tinlly similar toV that setv Vforth in Letters Patent No. 610,281 aforesaid, is not of the essence of my present invention, and the seme is equally applicable in connection. with lother thermal reuleting mechanisms which operate to'contro the supply of heating mcdinm to burnere by effecting movements of a regulating valve.

Inasmuch as the function of the gas snpply valve, 60, is to fully openv or to completely close, as the case may he, communication between4 the gas service pipe, 6, and the moin burners, 4, without effecting regu lation or graduation ofxsupply, while that of the as re latin valve, 7, is to regulate or gra uate t e supp y of as to the main hurners during the periods m which theV supply valve, 60, is open, it will be seen that the relative position of said valves, and 7, in the line gli su plyto the main burners, is imniateriu e lgulating valve, 7, might, thereforcfif desir be interposed, Without variation "of operative princlple or result, betweent e service pipe, 6, and the Supply valve, 60,i instead of, as in the instance. shown, betweenuthel supply valveand the main burners.

In the operation ofn water heater em- 'hodying my invention, the reduction of pres- 'sure on the'outlet side of therpist'on, 57, rcsultant upon the drawing o of Water from the heater at' the delivery cock of the outlet ipe, 12F, causes the iston, 57to be moved downwardl by the igher pressuren the Water supp y pipe, 56, thereby uncovering the ports, 58,- or unseatng an indepen water supply valve, 57", as the case may and dn'iittmg a, sup 1y of' water-to the v heater coil equal toi t etA which was with drawn therefrom. Thegas supply vulve, 60, is, through its connection with the piston 57,

'said inner tube, 13, being fixedi simultaneously opened, and admits ons lo 14, which 1s composed of less expxmsihle the main burners, 4, at which it is ign-ritmi by u f the piston,

l scapa- 1' the flame ofthe pilot burner, 5, and, by its combustion, imparts heat to the wuter in the coil. So long as water continues to be drown from the heater, the admission of iva-ter to the heater coil, and of gus to the mein burners, Will continue, the water valve and gus supply vulve renulining open, und the supply ot' gus being regulated by the regulating vulve, T. es controlled by its thermostut. Upon the cessation of the delivery of water from the heater, the pressure on the lower side of the piston, 57, will thereby be rein'- steted, and the pressure of the water in the su )ply pipp, 5G, not being then suiiicient to ho( the pistou 57, in position to maintain the flow of water und gas through its ports, 58, and the port governed by the gas suppl' vulve, 60, respectively, the spring, 62 will sent the vulve 60, thereby cutting on4 the supply of gesto the main burners, through the connections of said valve with 5,7, move said piston into position to cut oi the flow of Water to the heater coil.

While the specific form of the invention above described is designed more articulerly Afor heating water to heV wit drawn from theappratus in the form of hot wter',

i 4it will be at once pparent to those skilled the mein burners are ebove 212 F. 'Moreo er,

. from the hesiter,-

in the art that he invention isiqually applicable to thehe ting of water to convert it into steam forp \wer, heating,

cae, in which lager event` he coils. would e constructed stj enough to ,withstand the thermostat set to act at any de'Sired degree of temperature it will be apparent' that While gas is refer y d less any other suitable fuel capableof being conducted to the burners by menus of e suit. able conduitv und its' How contgolled by suitf able valves- Would be within the spirit of the invention. i

My invention is of substantial advantage in practice, both in preventing waste of gas by reason of unnecesse combustion thereof et the main burners, un inrguarding against- 'dxnnnge resultant upon accidental irrite!"-A ruption of Water supply to the heater, or upon excessive application of heut, due to the sticking ofthe piston und the consequent unrestricted admission vof gus to the mein burners. If water' either inthe form of hot wei-ter' or inthe form of'steum is not 'drown no gus is supplied' to the mein burners, and there no consumption of gsi-s during the periods in which hot water or steam is not dru'wu or neededexceptthe" comparatively smell volume W ich is required to maintain n Hume et the igniting or pilot burner. A material economy is thus effected, vus compared with u hee-ter in which kept constantly lighted. The provisionof means for regulating and controllingl the supply of gus to the mam 4, und,

or other pur V to in the foregoing description as lthe ulemployed, neverthe-V Jof te' 4peinture in l the tuute wter receptacle,

same, a water supply con conduit, a water actuated element, ai thermo-` hurners, lindependently' of its udmifssion thereto by u main supply valve actuated by n water pressure piston, affords an effectual safeguard against overheating und damage i to the heater und connected piping due to nef cidental interruption of `thcivnter supply by reason of the sticking of the piston or derzuigeinent of the Wsiter supply mechanism. The liability to failure of water supply, or' t0 excessive lieuti11g,dueto derungement or defective operntion of the mechanism, und. the dumno'e resultant thereon, have heretofore been round to be serious objections to heuters in which water pressure o'iemted gas supply vulves are employed, and bythe independent and ositive control of n regulating valve and t iermostat which is provided in m invention, ,heaters of this type are ren ered safe and reliable. VIt wi-ll be seen that ifthe piston should, `from any cause, or otherwise rendered inoperative while the gas supply Vvulve was o Yn, the thermostat would immediately an automatically uct u on the re ulating valve, and by` cutting yo the supp of gas tonthe main burners, prevent any emnge to the heater coil or its connections.

be stuck fast,.

i I claim es lmy invention and desire to zie-v cure by Letters Patent:

- 1. In a. water heater, the combination of a water reeeptuclefhavingaan inlet and outlet, a burner for heat-ing the same, a fuel supply conduit leeding'to seid burner', means wet-uated by the water and controlling said fuel andindependent' means controlling sul nel `supply and operated by veriutionsV vwut/er receptacle., 2; Inga wetereuter, the combination of a. water receptacle having an inlet and outlet, a. burner for heating the same,e fuel supply condvit lendingV to' seid burner e motor acvby the'wuter and controllingsaid fuel "und independentfmeans controlling Ziet supply and ofpermted by vuriatimis of' temperature in thewut/er receptacle;

' .6. In a `water heater,

stat, and e Iplurality of independent vulves inthe fuel suppl conduit, oneo'f said vulves being controle ,by seid element and the otherhy said thermostat ft. In e water heater, the combination of a water`rec'eptncle, a, burner for heatin tli'e same. u, water supply and e fuel supp vlve operated mitometicaily upon vcrus tions of preseurein the walter of the water receptacle and controlling said fuel supp md independent means controlling the nel supply peruture in the water recept-'aci En e water hea-ter, the combinatih of n 'theeomblnationof a.- a burner for heating 'the duit, ai fuel supply and operated by variations of temwitter receptacle having an inlet. and outlet,

n burner for heating the seme, e gas `supply valve controlling tl water'receptacle a burnerfor supply VIL .35 burner inde endent i '5o loc'mtrollin'g the 55 vvatejreceptacle havingl valve controlling the supply of 'gas to the burner, a piston operated y unbalancin the water apressureI on opposite 'sides thereo a. actuating said gas sup'pl valve a regulating e flow of, gas tothe ntly of the gas su'ply burner indepen ator valve, and a thermostat or thermal regu actuating the reulating valve.

6. In a water" eater, the comb ation of a ating the same, a gas s u p y valve controlling the iow of gas 'to the, urner, a water supply valve pistonactuated by the supply of water to the water receptacle upon variations of pressure therein, means tliroughwhich the opening of the gas'supply valve vis eieeted by the water ve piston, a mgnlating valve control ing the flow of gas to the burner independently of said gas suppl val-Me', and a 2o thermostat or thermal regu ator actuating the regulating valve.

7. In a water heater, the combination of a, dater receptacle, a burner for heatin the saine, a gas su ply .'valye controlling t How of gas to the' urner, a`watersupply 'Valve piston actuated by the supply o water to the water, rece tacle and upon' variations of pressure thawing-means thrgu h which the opening of thelgas supply va ve iSeRecte/d.

ao by the'waterrsiipply va ve jeton, aspiring bearin on the 'gas su ply ve and acti to eietpthe closure thlreof and the shitiiig of the water-sup ly 'valve on a regulating valve controilin the of gas to the of the gas su ply valve, and a ermostat or thermal ator actuating the regulating valve.

8. `In` a water eater, the-combination of a 'water receptacle, a main burner for heating 4o the same,'a water inlet `for sa'dreceptacle, a

pilot burner for the inain burner, a as service vi'peana branch pipe connecting l l?, e ses ,ce 4iili'nviltli thev Pilot burner; a

valye controlling communieation4 35 SUPP A4E tween `t vegas pipe and the lmain humana pieni@colintechniV to and aetuaig said gas V,ply value and ac tnatednby unbalancing t 'ei-Water pressurevwithin and without said rece'ltacle, a regulating `valve caff of to 1 the rrian burner independently of the gas sii ply valve,i and a thrlIIQvStat or therniairregll littor 4actuating the ieulatinl valve'. 2- y 9. In a water eater, t e combination of a 4 aninlet and outlet, a biinerior heating the same, a fuel snp ly Y, conduit leading to. said burner, means ac i1- ated"by th, walter and Controlling said fuel supply, independentv means controlling said fuel sup 1y, and a-thermostat in the water' reeeptace and in operative relation with said independent means.

' 10. In'a water heater, the combination of a Water receptaole'corisisting of a coil having G5 an inlet and outlet, a immer for heating lthe same, a fuel supply conduit leading to .said burner, means actuated by the water and controlling said fuel su ply, independent means controlling said nel suppl and a thei'mostat'in the circuit of thecoil and in operative relation` with said independent means.'

1l. In a water heater, the combination of a water receptacle consisting of a coil having an inlet and outlet, a burner for heating the saine', a fuel supply conduit leading to said burner, means actuated by the water and controlling said fuel supply, independent means coptrolling said fnclfupply, and `a thermostat 'in'the ontletp0rti0n ofthe coil and in operative relation witli said indef` pendent means. y

12. In a Huid heater, the combinationof a receptacle havin a water inlet and an ontlet, a burner for eating the same, a fuel Veupply c ndnit leading to said burner, means actua ved by the water and controlling said fuel snpalr, and independent means controlling sai uel supply and operated by variations of temperature in said receptacle.

13. In a fluid heater, the combination of a receptacle, 'a burner for heating the same, a water supply conduit, a fuel supply conduit v a water actuated element, a thermostat, and a plurality of independent valves in the fuel supply conduit, one of said valves being control ed by said element and the other by said thermostat.v 'l

14. The combination of a, receptacle, a burner for heating the saine,-a water ,supply and a fel su ply, a valve operated automatically by t e` water upon variations of trolling the u'el supply and o erated by valriatio'nls of tem erature in sai receptacle.

15. Tliecom inatioi'i of a .fluid receptacle, means for establishing a How of ai Huid therethrough, a burner for heating the same, a ,fuel supply conduit leading to saith burner, a valve or governin said fuel su 1y conduit, means actuated y. the fluid while iiowing for opening said valve, said valve nrmally, being returned to its closed position when the-dow of the fluid ceases,'and.inde

` 16. In a fluid 4heaterythe'combination of a receptacle, having awater inlet and an outlet,a burner for 4heating the saine, a fuel supjly valve controlling the su ply of fuel to be burner, a piston operated y nn'balancin the Water pressure on opposite vsides thereo and actuating said fuel su ply valve a rogu- ,lating valve controlling t e How 012 ftiehto the burner independently of the fuel supply valve., sind a thermostat or thermal regulator' actuating the regulating valve.

. 17. In a fluid lieater,.the combination of n pressure in, said receptacle.v and Acontrolling said fuel supply and independent means conpendent means forfcontrolling Vsaid fuel s'upf' 4 ly and operated b variations of temperareceptacle comprising a coil having a. water inlet and an outlet, a burner for heating the same, a fuel supply conduit leading to Said burner, means actuated by the water and con. trollin said fuel su ply, independent means i controing said fuel) supply, and a thermostat in the outlet from the coil. and in operative relation with said independent means. 18. In a fluid heater, the combination of a receptacle, a main burner for heating the Same, a Water inlet for Said receptacle, a pilot burner for igniting the main burner, a fue] service pipe, a branch pipe connecting.;l the fuel service pipe with the pilot burner, a fuel supply valve controlling the communication between the fuel service pipe and the main burner, a piston connected to and actuating said fuel Su ply valve and actuated by unbalancing tlie Water pressure Within and without said rece tacle, a regulating valve controlling the ldw of fue] to the main burner independently of tne fuel su ply valve and 4a thermostat or thermal regu ator actuating the regulating valve.

EDWIN RUUD. lvitnesscs J. SNowDnN BELL, CLARENCE A. WILMAMS.

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