US1988503A - Heating boiler - Google Patents

Description

E. H. M CATHRON Jan. 22, 1935.

HEATING BOILER Filed Feb. 25, 1933 2 Sheets-Sheet l INVENTOR. FarlElYcCal/irorz ATTORNEY Jan. 22, 1935. E, H, MCCATHRON 1,988,503

HEATING BOILER Filed Feb. 25, 1933 -2"SheetsSheet 2 11v VENTOR. Far/HM Cad/cram BY m ATTORNEY Patented Jan. 22, 1935' V v i This invention relates to boilers such as are Fig. 3 shows a similar cross sectionof an oval used for-steam, vapor or-hot water heating and 'shaped-boilen j T a 'is designed to be madeoi; sheet steel weld *tc- .1 Reierring in detail'to the characters of refg'ethei" to form a singleiunit v *erenceimarkedf upon the'drawings, 10 represents 5 'The purpose of the invention is to designs, the outer casing of the boiler whichis of an 5 steel boilerin a way 'whichwill be especially elongatedcylindrical-form; though may obviously adapted for the use of oilburnersgand which will be of" any other preferred shape, and serves to notbe materially affected bythe frequent and exform the: outer water jacket of the boiler, and cessive changes in temperature a'scausedby 'the which may becoveredwith anrasbestos jacket or use of an oil burner, and which I find-has proven other suitable covering, not shown, This casing, 10

destructive to many of the boilers'formedof cast as well as other partsof the boiler, isfabricated iron, as well as some makes ofboilers for-med of of" sheetisteeLbeing welded together .to form my steel platei; 1 I r novel structure. I. I

With the above object in view,;I;have produced The boiler includes a combustion chamber 11 a boiler, thefire passages of which aremade'of in which an oil burn r; n ts wny y be lposi- 15 heavy-boiler plate; assembledand welded together timed: and which is also adapted for grates for to form a series of relatively flat heat chambers burning coal. An ash pit 12 is formed beneath arranged one abovethe other and connected by the combustion chamber, adoor 13 being proshort pipes that are staggeringly arranged above vided for the latter, and a door 14 for the ash and below 'said fiat heat chambers and which pit. The side walls of the combustion chamber 20 when assembled, are arranged somewhat inthe are cylindrical in form and. arranged in-spaced form ofa bellows that-is supported between the relation totheouter jacket soias to form a water crown sheet of-the fire chamber and the top space l5 therebetween. The top. wall 16 of the plate ofthe boiler. This-forms; aflexible design combustion chamber is flat: and provided with a in a wayto better withstandthe expansion and centralopening 17. throughwhich the products contraction that is-especially produced by Oil of combusti n passiyfrom hfi j COmbUStiOn burners and stokers, due to, the intermittent chambers, operation; i V j 1 1 8, '19- and 20 represent shallow cylindrical The boiler, as designed, is entijrely assembled "heat chambers which are of a pan-like form, be-

in the factory, forming a; finishedf unit, and i's i grelatively,flat,-arrangedone above the other, 30 thus adapted to be readily transported, rolled and in; spaced relation to theouterjacket ofv the into the building, stood up on its endin; place, boi eh. IW l it will beunder tood t there and in readiness for connecting the'wate r supply may be any desired number. of these flat chain and heat piping. I r r bers employed in my' boilen yet for convenience,

1 With theseand other objects in-view, the inof illustrationl have shown but, three, thesame 35 vention resides and consists in the construction being of approximately'thesame size, and conand novel combination and arrangement of parts nected together and supported; as between the hereinafter more fully described, illustrated in top plate 16 of the combustion chamber and the the accompanying drawings, and pointed out in -top plate -21 of the boiler, to form heat pas- 40 the claim-hereto appended, it being understood sages-from thecombustionchamber to the smoke 40. that various changes in the form, proportion, outlet. size, and minor details of construction within The central portion of the lower Wall of the the cope of the claim may b3 resorted to withbottom chamber 18 is connected by a relatively out departure from the spirit, or sacrificing any large P 22 with the Opening in the p Wall 16 of t advantages of t ti of the combustion chamber so as to freely take 45 Similar characters of reference denote like or t Products of combustion therefrom- This corresponding parts throughout the several figchamber 18 and the next one 19 above it are conures of t accompanying drawings forming nected by a series of relatively smaller pipes 23 part of this specification and upon which that are arranged between the outer adjacent Fig. 1 shows a central vertical section through faces of the two Chambers S0 ES 130 form e t 50 my improved boiler, which, as shown, is of a pa sa s m h lower t h upp r am r, general elongated cylindrical shape and adapted a whereby h heat, as it comes into the lower to be set upright for heating purposes; chamber, is caused to spread out radially to enter Fig. 2 is a sectional plan view taken on line the'said smaller pipes. The top wall of the inter- 2-2: of Fig. 1; and mediate chamber19 and the bottom wall of the 55 boiler leaking... 1 A

bution of heat, I preferably provide a single. centrally arranged smoke outlet pipe 25, one end of which is connected with the heatchamber ;2 0, and the other with the top plate 2110f the boiler so that the assembled heat unit within the boiler is supported by and between the said top plate 21 and the top' plate 16 of the combustion chamber, which leaves the unit free to expand both vertically and horizontally, enabling itltofunc tion in its contracting and expanding movements somewhat like a bellows and whereby less strain is brought to bear upon the seams and-eonnected parts, thus minimizing the possibility of the I also provide two relatively smallccentrally positioned and aligned pipes26 as betweens the several flat heat chambers which are primarily for they purpose of allowing a freer escape of gas from; the combustion chamber, which sometimes accumulates when theoil is turned off, and which often serves to blowthedoor oifof the combustion chamber, when againlighted andif noprovision for the escape :of gas is made. 1 These aligned openings also serve to permit of the proper testing of the unit, after being assembled, though-before being installed, by permittingj ayrod not shown,;to be extended down. through the-said chamber andpipes .26 to supportx-and secure a plate, not shown,against the ends of .the'pipes 22 and25. :7 Y

Plugs 27 are suitably positioned in the side of the boiler casing to permita cleaning brush to be inserted and used, when necessary, as between the parts of the severalunits, whereas'the plugged openings 28 upon the front side of the .boiler: are designed to serve a somewhat similar purpose, as for cleaning the :several pan-like heat chambers. These openings include short pipes' as between 'the pan-like heat chambers and the boiler casing. These short pipes are necessarily light and suiiiciently i flexible to readily yield to such slight movements of the centrally positioned unit as may oc cur,- due to changes of temperature. The cleanout plug 29 serves to 'clolsef'an opening that'is'used as a cleanout for bottom of water space of boiler,.,and 30 represents a serv,- ice outlet for hot water or steam to the radiators, not shown. 36 isan opening throughfwhich'con densed steam or coldwater is returned to the boiler from the radiators, V I I In addition to the foregoing, I also provide a hot watersupply unit which is adapted for domestic purposes and which according to the construction can be supported and submerged within the'boiler below the water line in a way to provide an ample water supply without the use of a storage tank. This coil is inserted through an opening 31 that is closed by a plate 32, and to which the nipple ends 33 of the double coil 34 are connected. This coil is preferably formed of copper tubing and isin the form of a double coil arranged one within the other, though-a continuation ;of,; ,the one pipe. It is arranged to be supported on the top plate of the top pan-like pheat passage 20 andmay be relatively straight, as shown in Fig. 2; or deflected as shown in Fig. 3,

bet't'er'to conform to the shape of the boiler and its assembled unitsupported therein.

The modified form or oval type of boiler shown inaFig. 3 is obvio'usly well within the scope of ,the. invention and is designed for larger installations'where the sizes of the doorways or openings intobasements are; limited, Practically the only difference of this designof boiler, from the-cylin- .drica l,type, is that it, is longer andnarrower and that the domestic heating coil carried therein is bentto better accommodate itself to the oval,

shapeofthe boiler. Owing to the'fact that the boiler is relatively long and narrow, it can be ,confitructed to carry more waterand include greater. heating areas, andthus comprises a boiler ot-relatively greater heating. capacity than is pqssible to produce in a cylindrical boiler that gcould-becarried through a limited-sized doorway. I-Iaving'thus described my invention, whatI claim and desire to secure by Letters Patent is: i ,A sheet-steel boiler weldedtogether to form a single unit and comprising an'outer waterjacket, ,an enclosedfire chamber in the base portion of andin spaced-relation to the said outer water .jacket, a series of relatively-flat disk-like heat chambers arranged one above the other, a centrally; arranged relatively large pipe connecting the central-portionof theuppermost one of the heat chambers withthe topof the water jacket, a single centrally-arranged relatively large pipe connecting the fi regchamberwith the lower one of the heat chambers, a series of pipes connecting. the outeradjaeentface portion of the heat chambers, relatively small aligned pipes connecting the central portions of the adjacent walls of :thedlfierentheat chambers fiexible clean out pipes positioned inthe water Jacket and connected, with the heat chambers, 'the said connected heatchambers forminga unit that is supported between the top of the water jacket and the topof the ;combustion chamber by a single central p pe connection to each, and free to expand and contract both vertically and horizontally Without affecting the outer wall of the boiler. i

1 EARL HENRY McCATHRON.

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