US2392587A - Heating apparatus - Google Patents

Description

7 Jan. 8, 1 946. GOERG 2,392,587

HEATING APlARATUS Filed June 10, 1942 2 Sheets-Sheet 1 INVENTOR fife/men 605/66 @ATT RNEY Patented Jan. 8, 1946 HEATING APPARATUS Bernard Goergi, Bronxville, N. Y., assignor to American Radiator & Standard Sanitary Corporation, New York, N. Y., a corporation of Delaware Application June 10, 1942, Serial No. 446,473

6 Claims.

My invention relates to heating apparatus such as boilers, furnaces, and the like, audit has for a broad object to provide a new and improved form of baiile structure which functions to direct the flow of the combustion gases and to protect the defining walls of the combustion chamber.

A further object is to provide an improved form of crown sheet baiiie for heating apparatus which is simple in form and is inexpensive to make and which can be readily inserted and taken out through the furnace door and which can be easily and readily assembled in itsoperative position.

The invention consists in the novel construction and combination of parts, to be more fully described hereinafter, and the novelty of which will be particularly pointed out and distinctly claimed.

In the accompanying drawings, to be taken as a part of this specification, I have fully and clearly illustrated a preferred embodiment of my invention, in which drawings- Fig. 1 is a longitudinal vertical section showing one preferred embodiment of my invention, the view being taken on the broken section line l'-| of Fig. 2 and also including the lower part of the combustion chamber and a conventional form of fuel-burning apparatus;

Fig. 2 is a transverse vertical section taken on the line 2-2 of Fig. 1 and omitting the lowe part of the combustion chamber;

Fig. 3 is a partial plan section taken on the line 33 of Fig. 1;

Fig. 4 is a detail view showing in perspective one of the plate members which when assembled with another plate member similar to the one shown, forms a crown sheet baflle; and

Fig. 5 is an enlarged fragmentary vertical section taken on the line 5-5 of Fig. 3.

Referring now in detail to the construction illustrated, I have shown my invention as embodied in a conventional form of heating apparatus, known in the art as a vertical sectional cast iron boiler. It will be appreciated, however, that, in so far as the broader aspects of this invention are concerned, it is not limitedin its application to the particular type of boiler, or furnace, which is shown,for the invention can equally as well be incorporated in a varietyof other types of heating apparatus.

In the drawings, the boiler is indicated in its entirety by the reference numeral I0 and comprises the usual back section II, front section I2, and one or more intermediate sections, there being two in the boiler disclosed, said sections being indicated by the numerals l3 and I4, respectively. The several sections are assembled in vertical side-by-side relation and the hollow interior spaces therein are connected at their lower ends by the usual small water flow nipples IE (only one being shown) and at their upper ends by large steam and'water flow nipples l6, so that the boiler water may freely circulate between sections and the steam from all sections may flow freely to a steam outlet connection I! which may be formed in any desired section, for example, the intermediate section I l, The normal water level is indicated at l8. The boiler l0 may be operated as a hot water boiler aswell as a steam boiler.

The several boiler section are constructed so that when they are assembled in the manner shown; they provide a combustion chamber'Zfl in the lower part of the boiler, and a plurality of horizontal flues 2| in the upper part of the boiler to receive the combustion gases from the combustion chamber through the usual opening 22, here shown a being located in the top and rear of said chamber. The flues discharge such gases from the boiler through the usual smoke outlet 23. The combustion chamber 20 is defined by a pair of opposed upright sidewalls 24 and 25, respectively, a crown sheet or top wall 26 connecting the upper ends of the side walls 24 and 25, and a pair of opposed end walls 21 and 28, respectively, connected at their uprightsides to the side walls 24 and 25 and at their top to the crown sheet or top wall 26. The end wall 21 may be considered as the rear end wall and the end wall 28 asthe front end wall of the combustion chamber. The gas outlet opening 22 is here shown as being provided in the top wall 26 adjacent the rear end wa11 21. Although I have shown only one gas outlet 22, it will be appreciated that a second outlet is located at the opposite side of the combustion chamber and connecting thelatter with the left-hand flue 2 I, as viewed in Fig. 2. Access may be had to the interior of the combustion chamber through the usual door 29 .attached to the front end wall 28.

The boiler I0 is shown in Fig. 1 as being fired by a conventional gun type oil burner 30 which discharges a mixture of atomized oil and air into the lower part of the combustion chamber where it is ignited and the major part of combustion takes place. As'stated, the combustion gases flow upwardly and outwardly from the combustion chamber through the outlet opening22. The arrows in Fig. 1 indicate the path of flow of the-comibustion gases.

In accordance with the presentv invention, I

provide an improved form of crown sheet bafile structure indicated generally by the reference character 32. The baflle is spaced downward from the crown sheet or top wall 26 and from the ga outlet 22 and thereby functions to prevent the very hot combustion gases from flowing directly to the gas outlet andalso effects a more thoroughand intimate contact of the gases with the entire area of heat absorbing surface defining thecombustion chamber. Due

to this well distributed and intimate contact of the gases with the heat absorbing wall struce ture, the temperature of the gase leaving the combustion chamber is lower andthe efiiciency 'of the boiler higher.

Furthermore, the baffle structure 32 acts to reduce the temperature of the gases before striking the top wall or crown sheet 25 and consequently there .is less" likelihood of damage to the crown sheet, the latter being more vulnerable to high temperatures due e' beifiu 2 ob truc in t s m ext t the irc t water space a o th o n heet- ;v

he c own sh t ba le. structur 32 x end erossa h ton of the c mbus c ambe om ones de w ll 2 th re to. theethers de eve- 7 nd s ar an e alene ideth end-(@ 121 which isadiae nt the t e .22- st ted, theath .11s. spaced d wnward fromthe top. wall 26. an issarren d b neat t e eutle 22;. nd t us provices. aeash ssaee 33 etween the; wall it a baffle r32, which passage connects ,at its-forward nd withtheu perparts of 'th combustio chamber and connects at its rear end withrthe.

structure may: be likened unto the. peaked roof of a house with each, plate. icorresponding: to; a

sideoftthefroof, 'and lyingi'adjacent one of the upright sidewalls. The apex ofthejV-shaped structure is shown as extendin'gforwardly away from 1a central 'pOI'tiOI'l of the reari'end wall '2'! I and. toward .theffro'nt end wall 28 "and -'lying approximately "within a? central longitudinal vert'ie cal rplane'through the boilerl andab'o'ut 'edui-" distant :from the 'two sidewalls 24 and" 25.

"Each of the plate, members'34i'and35'is formed as'caw'casting and the plates :arepreferablyidentical in formso th at'onlyqne pattern will be'required. Thei'plates are so "constructed that they may be arranged adjacent either of the up rightsidewall ifl" or 25', i; e., they are reversible;

Each plate-comprisesfla' lower edge portion 3'! adaptedto be arrangedalongside-one of the side walls" and'an upper edge portion 38jarrang ed in abutting and mutual supporting engagement with the' upper edge 38"of the-other plate, and

each plate comprises end or lateral edge- portions 39 and 40, one of which extendsalong' th'e end wall 21, depending upon which side-of the boiler" the plate is placed. The various edgeportionsfcontribute to reinforcing th'e pIate'. 1

Means is provided on each of the upright side walls Hand 25 at opposite sidesofthecombus tioin chamber fiorsupporting the lower edge porti'ons '31? of the two plate members against outward or downward movement; said; means being showfnin'the for-m of'a single lug ll 2-extendin g inwardly from each side of thesection it3fan dfan abutment rnember 43 arranged centrally andon top of each lug 42. The outer or peripheral face of each lower edge portion 31 abuts a member 43. and the lowermost edge 31a thereof rests on the lug 42 (see Fig. As corresponding upper 5 edge portions 38 of the two plates are in abutting engagement with one another and the lower edge portion 31 are prevented from spreading or moving outward due. to lugs '42 and abutments 43, thetwo plates'are held together in assembled position by their own weight. The

lugs 42 engage the respective plates forwardly of their longitudinal centers whereby the plates are caused to lean against the rear furnace wall as later described.

16 In order"toi, assure proper assembly of the plates withintheb'oiler and at the same time permit reasonable tolerances in manufacture of the'cast ironparta the upper edge portion 38 of each. plate is provided with a relatively high abutting or engaging surface preferably in the outer abutting face; 46. It isv noted from; an.

examination of Figs. 1, 3 ,and 4-thatthe abutting face J45 does not extend for the fulllength of the flange 45, but is in reality twoco-planar faces 46aand 461? located, respectiyelm'a-t the two end portions of the flange '45. The central portion 41 ofthe flange does not extend out to the-plane of the faces; 46a and 46b. The latter is done so as to assure abutting;engagementfof the facesof opposing. plates3ll and 35. If-the face 46 extended for thez'full length of they flange, unevenness in castingv might" cause afihighs'pot and engagement; would: only be had flVlJliZitiSHOt 3 and theplates wouldirock'aboutthe DOlhtT'Of' engagement and be unsteady: f-Theyc'onstructi'on shown assures at least two points of contacti at opposite ends of eachplate, i

I Each ofthe' plates '34 and"=iszprovided atzits. upper edge "38 with "a pair fof; hooks, :or lugsyfl and 50, which project outwardly'fronrthe flange.

4 5' thereof" and overlie thetopisurface bfthe flange 453 of the otherplate. Thus, in' caseeither plate, for example, the'plate 34., i happens to beaccidentally"displa'cedupwardly' with .res pect tc the other plate; the "plate 3 55,"; the; hooks '45 and of plate 35 will immediatelyengagelthe top" latter against further upward?'irlovement and disassembly of the p1'ates.:"In order to provide tolerances in the. castings' necessary to assure between the lower 'suface of the hooks? and? the top surface. of the flange fli' or'thecpposing 5 plate. In order thatonlyonepatternbeflneces sary, the hooks wand 50' offl'eachplataare spaced unequal distances frcm tl-ie adjacent edges 39 and 4flitherebffso that w enthe plates are arranged in reverse"positioriw thIrespeet to one anothery-the position showri irf the" new ings, the hooks o'f-fon'e plate" 'will' lfie be stag ge red with respect tothe hook's' ofthe 'otlrier pl ate rid will 'not' strike one "another; is' notedtha Fig. 3? the ri'gh t-'hand -1 l(;)61 5m'i'S spaced the 65 same "distance fro'm the right; 'efdgelfliof plate'35, as the left-haud'nock -sc' s spaced rroci the left-hand 'edfgef 40 of 'its pl at at left-hand hook 49 is spaced the from the adjacent edge 39 of'its -plat35 as the right-hand hook 49' is spaced fro'rn the adjas t-e l me distance- 34. .The difference in spacing is such that the hooks of opposing plates will not interfere with one another and so that the hook 49 of, one plate will always lie alongside the hook 50 of the adjacent plate.

Each end edge portion '39 and 40 is provided adjacent the upper and lower edges 38 and 37 with spacing lugs52 and 53, so that when either plate is in assembled operative position the'lugs 52 and 53 projecting from the end edge portion thereof which is adjacent the rear end wall 21, will engage such wall 21 and space such end edge portion therefrom, so that a small flow of combustion gases will be maintained upward along the surface of wall 21 and into the gas outlet 22. This construction prevents the formation of dead gas spaces along the wall 21 beneath the bafile 32. These lugs also position the plates and prevent them from rotating about their single lower edge lug supports 42. t V a Each of the plates 34 and 35 is also provided along the lower longitudinal edge 31 thereof with downwardly extending lugs 60 one of which engages behind the side of the projection or lug 42 which is adjacent the end wall 21 and holds such plate in assembled position against and prevents it moving away from the end wall. One of the lugs 60 performs the just mentioned function when the plate is arranged alongside one boiler side wall and the other lug 60 performs such function when the position of the plate is reversed and it is arranged alongside the opposite boiler side wall.

From the foregoing, it will be apparent that I have provided an improved form of heating apparatus which includes as an essential part thereof, a simple and inexpensive form of crown sheet bafile, which can be readily inserted through a, fire door'and properly assembled in the combustion chamber after the boiler sections have been assembled.

What I claim and desire to secure by Letters Patent of the United States is:

1. A crown sheet bafile for boilers and the like comprising a pair of similar thin plate members arranged to form an inverted'V-shaped structure with the upper meeting edges of said members in abutting mutual supporting engagement, and adapted to be supported at their lower outer edges against outward and downward movement, each of said plate members being generally rectangular in shape and including a wide upstanding reinforcing flange extending along one side thereof and having an outer face forming said upper meeting edge thereof, said face having planar end portions and a depressed center portion and each member also includingtwo hooklike lugs projecting along the back of and outward from the top of said flange one near each end thereof and adapted to overlie the adjacent parts of said other plate member when. in assembled relation therewith, said lugs being differently spaced from their respective ends for the purpose described.

2. In heating apparatus, wall structure defining a combustion chamber wherein fuel is adapted to be burned and including upright opposed side walls, a rear wall and a top wall; a crown sheet baffle extending across said combustion chamber from one side wall thereof to the opposite side Wall thereof, having one edge substantially against the rear wall and being spaced downwardly from said top wall to provide a gas passage therebetween, said crown sheet baffle comprising a pair of similar plates arranged portion being arranged centrally of said chamber and being provided by an upstanding flangeof substantialheight having an outer face disposed in abutting and mutualsupportingengagement with the corresponding face of the,

other plate, a single lug on each of said side walls for supporting, respectively, the lower edges ofsaid plates only forward of their longitudinal:

centers against outward and downward 'move ment and; means on each lower edge to engage behind the corresponding'lug to prevent move ment of the plate away from the rear wall. 3. In heating apparatus, wall structure defining a combustion chamber wherein fuel is adapt-, ed to be burned and including a pair of. upright opposed side walls, a rear wall and atop wall; a pair of supporting lugs formed, respectively, one on each of said side walls and said lugsrextending toward the center of the combustion chamber; a'crown sheet baffle extending across said combustion chamber from one sidewall thereof to the oppositeside wall thereof, having, one edge engaging, against the rear wall and be-, ing spaced downwardly from said top ,wall/ to provide a gas passage therebetween, said crown sheet bafile comprising a pair of similar plates arranged to form an inverted V-shaped structure and each plate comprising upper and lower edge portions at opposite sides thereof and the lower edge portion being arranged alongside one of said side walls and being supported by the lug on said one side wall only forward of the longitudinal center thereof against outward and downward movement and the upper edge portion of each plate being disposed centrally of said chamber and in abutting and mutual supporting engagement with the upper edge portion of the other plate.

4. In heating apparatus, upright opposed side walls, an end wall, and a top wall constituting a part of the defining wall structure of a combustion chamber in which fuel is burned, the combustion chamber having a gas outlet in the upper part thereof adjacent said end wall; a crown sheet bafiie extending across the upper part of the combustion chamber from one side wall to the other side wall and alongside said end wall and being spaced downwardly from said top wall and below said outlet to provide a gas passage connected at one end with said outlet and connected at its other end with the lower part of the combustion chamber, said crown sheet baflle comprising a pair of similar plates arrangedto form an inverted V-shaped structure with the apex of the V extending horizontally outward from said end wall and lengthwise of the combustion chamber and being located approximately equidistant from the side walls, each plate having an upper edge in abutting and mutual supporting engagement with the corresponding upper edge of the other plate and a lower edge alongside the adjacent side wall, means on said side walls and. engagin e lower edges of said plates substantially forward of their longitudinal center for supporting said plate against outward and downward movement, and lugs spacing said plates from said end wall so as to permit enough gas flow therebetween to prevent a dead gas space below the plates and alongside the end wall, said last mentioned lugs preventing rotation of the plates about the first lugs,

5;:1'Iniheating apparatus; wall. structure edefin ing'a combustionchamberwherein'fuelis adapted te her-burned and comprising upright i'opposed sidewalls, an end .wall, 'and altop wall; .a' pair :of supportingalugs formed; respectively; on said side walls and said lugs extendingatowardithe center at opposite sides thereof and'the lower edge por tion being arranged alongside one of said side walls and being supported by said lug on said one side wall against outward and. downward movement, and theupper edge portion ofeachplate being disposed centrally .of said chamber and in abutting and: mutual supporting engagement with the upperedge portion: of the other'plate, and apositioning slug projectingirom the lower parts ofleachplateand engaginglthe-side of -the adjacent supporting 'lug' which: facestoward said end wall so as to hold the plate inengagement against said end wall.

T6; in heating apparatus comprising opposed upright side walls,. a ironic wall, airearwall, and a toplwall defining a combustion chamber in. which fuel is adaptedto be burned laeremovable crown sheet baflie adapted to bevar-ranged'across the upper, part of said combustionchamber frorn'one side walllto the lothersideawall thereof and spaced downwardly from-said top wan to define argas passageitherebetween, and. said crown sheet baitfleaacomprising aJ-pair of similar intercharigeable plates arranged to formv anxjinvert'ed V-shaped structure with the apex of th'ezV extending.:horizontally between the front and rear wallssand being. located approximately equidistant: from the sidezwalls; each of said plates havingzan upper edge in; abutting and mutual supporting engage.- ment with the upper edge ofthe other plate. and h ilingza. lower. edge lying. alongside theadjacent sidewall, means on said side walls supporting the lower edges of said plates forward of their longi-V tudinal centersagainst outward and downward movement, and, projections'forming substantial extensions of the upper and lower edges of each plate engaging the rear wall to provide spacing therefrom, and to prevent. rotationof .the plates about said supporting means." A

BERNARD GOERG. f

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