US2568120A - Heating apparatus - Google Patents

Description

Sept. 1951 w. H. DE LANCEY 2,568,120

HEATING APPARATUS Filed March 5, 1948 3 Sheets-Sheet 1 Fan,

IarrenEDeLanae Sept. 18, 1951 w. H. DE LANCEY HEATING APPARATUS 3 Sheet's-Shet 2 Filed March 5, 1948 p 1951 w. H. DE LANCEY 2,568,120

HEATING APPARATUS Filed March 5, 1948 5 Sheets-Sheet :3

55 f 4-6 WW I I L- A Mrreiz 7[ Dela rzce y y mam "dential houses -lllntS'z f A principalobject of this invention is to pro- Patented Sept. 18 195i ,U TE ,,STATEs ;PATENT ornca setts" This invention relates won or gas fired boilers ofthetype particularly adapted for heating resiand small industrial establish 'vi de a-boiler"which, although most efficient in -eperauon, is,-at the same time, particularlydesig'ned' soas' to be capable of economical manufacture'by modernf production-line methods. In other words; the present inventioncontemplates 'a -boiler,-"the' design of which-is suchthat the ivarious component boiler elementsmay each be simply and' spee'dily constructed by automatic machines, and thereafter assembled together in a most simple-and efficacious manner; to thefe'nd are maintained at aminimumfigure'.

-Aifurther object-ofthe present inventio'n'is to provide a boilenuni-t which is so-comp'act 'that it may be completely: -assembled with its controls, .andzbetransported as a 'factory-tested unit-to the buildingyin which operated.- i

it. to be installed and U ;,Yet;another object oi-this invention is to provide a boiler, unit; which, when :operated as a steam vapor boiler,y.is; particularly adapted'for supplying extremely dry or superheated steam to the house heating system. which attached :th to- With the above will hereinafter 1appe ar,;the invention comprises the :levices, combinations, and arrangements of parts hereinafter-,setjorth and illustrated in the accompanying drawings of a preferred embodiirintof the invention, from which the several features oflthesinvention and the advantages thereof may be readily understood by those skilledin'the art. "ffFig. l represe'nt's an assembly view,..par tly in side elevation, ,and partly in vertical section, of a boiler in;accordance with my invention. 7 V

Fig.2 represents a fragmentary top, plan view fof the present boiler unit.'. i

Fig. 3 represents a sectional stantially along the line 3 3 of Fig. 1". Y 1 'Fig. ,41represents a sectional view taken stantially along theline 4 4. of Fig. 1. I 1 fFig; 5 'represents, on a reduced scale, a front viewof the present boiler unit. 1 4 f FigfiS represents, on a reduced sdal'eja rear view'of the present boiler unit. I FigL-"l represents a sectional view taken sub stantially along the line 'l of Fig. If vFig,Brepresents a perspective view of theboiler flue elements as attached to" their vertically opview taken: subiiose'd-headerplates.

and other objects "in view, as

Warren .HIZ'DeQLancey, Springfield, Mass., as- Sig-nor to Atlantic Development Company, 1110.,

I Springfield, Masshja corporation of Massachu- App lication1M arch 5, 1948, Serial No. 13,209

z'olaiinss (01. 122-426) Fig. 9 represents an end elevation veiw of a typical boiler flue elementemployed in the present boiler unit.

Referring now to the drawings which illustrate a preferred embodiment of the invention, the present boiler unit is substantially cylindrical in shape, and comprises a cylindrical outside boiler wall or shell 12 which is closed at its bottomportion by means of aso-calledwet base. This wet base comprises a pair of, vertically spaced plates I3, and I4 which are maintained in a properly spaced position by means of a plurality of stay studs l5, IS. The peripheral edge portions of the plates [3 and I4 are connected together by means of a circular strip l6 which is appropriately Welded along its top and bottom edge portions to the vertically opposed plates. The lower edge portion of the boiler shell I2 is, in turn, welded to the strip l6 thereby forming a watertight seal. The top portion of the boiler is closed over by means of a circular top plate I! which is suitably welded to the boilerwall l2. -If desired, the entire boiler unit may be incased in an insulated metal jacket, thereby to enhance the appearance of the boiler, and at the same time, to reduce the heat losses from the same.

Referring particularly to Figs. 1, 3 and 5, it is to be understood that the lower front portion of the boiler wall [2 is aperture-d, and has a firebox door l8 suitably secured over this apertured portion. This door l8, as may be particularly noted in Fig. 3,is linedwith firebrick,or other suitable heatinsulating material IS. The door l8 and the insulating material l9 are provided respectively with horizontally disposed apertures 20 and 2| through which the usual burner nOZZle may extend.

Referring, particualrly to Figs. 1 and 3, there is disposed inwardly of the apertures 20 and 2|, a combustion chamber defined by an arcuate upstanding shell or wall 22, the forward end portions of which are welded adjacent the apertured portion of the boiler shell 'l2,'as at 23. The bottom portion of the combustion chamber shell is closed by means of a lower disk 24 which is suitably welded about its peripheral portion to the lower edge of the shell 22. The top portion of the combustion chamber shell is closed over by means of a disk 25 and an L-shaped arcuate strip 26. This disk 25 has its peripheral portion welded to the top edge portion of the shell 22, while the strip 25 has its vertically disposed por tion 26 welded to both the disk 25 and the forwardly extending portions of the shell 22. The horizontally disposed portion of the strip 26 is welded to the front apertured portion of the 3 boiler shell I2, as at 21. This combustion chamber, in conjunction with the front wall portion of the boiler shell l2, efiectively seals off the combustion area from the water and steam chamber portion of the boiler as the various wall portions of the combustion chamber are welded, or otherwise suitably connected, to either the boiler shell I2 or the bottom closure plate thereof.

Mounted directly within the confines of the combustion chamber is an open topped firebox which comprises a rear wall 28 and a pair of side walls 29 and 30 which are connected to the rear wall. The forward portions of each of the side walls 29 and 30 are Welded enem to the front apertured portion of the boilershell l2, as at 23, 23. Also, the lower edge portions of the firebox walls 28, 29 and 30 are suitably welded to the bottom plate or disk 24 of the combustion chamber. Still referring to Figs. 1 and 3, it is to fmits airto enter the firebox and therebyenhance combustion. Of course, this plate -3j-| will also *permita viewbf theinte'riorof the firebox and this, enables one tdasce'rtain whether proper combustion is taking place. I This plate 3| is pivotally inountedupo'n-a pin32 whiehis-carried 'by' bars 33,-in turn s'ecured upon the fi'reboxdoor '18.

The combustion gases "will, of necessity, pass upwardly out of the firebox, and successively through flue "sections generally designated by thenumerals 35, 35 and 31, so as finally to pass out through a stadk-connection-or-tube 33 which "is "disposed within the back portion of the boiler shell l2.

More specifically-[the flue section comprises "a plurality of "individual vertically disposed flu e "elements, each of which is "designated by the numeral 39. Each end portion'bf theseflues extends throughan appropriately shaped aperture provi'ddi'na-resb'ective one-of apair of'horizontally disposed and vertically spaced header plates 40and 4l. "By welding on'e end portion 'of each'flue'lto its associated header plate a'rig-id watertight structure is formed, which *is best illustrated in Figs. Band 9. By-referring to these latter two'figures," it is to 'be understood that each of the individual flue sections 39, '39- comprises a pair of "identical corrugated'steel stamp: ings=42 and 43 which are placed together with their corrugations in phase; and thn welde'dat -their- opposite side portions 44, 44 so-as "to f'orr'n an open ended flue having a tortuous gas-eonducting passageway therein. Essentially, each fiue' section 39 is shaped as a flatte'nedtube, and since these fiues provide tortuous gas con'ducting passageways, there is no need to f provide the various flue elements with auxiliary--'baflle-plates. By thus forming each flue elementin this manner, the two halves 42'and43 thereof may be ineXpensively stamped from the same die and, furthermore,'since the opposite side portions, as well as the top and bottommarginalportions of the open flue, are'all left in-anuncorrugated condition, the flue halves maybe readily'welded together and to the header -plates"by'automatic welding equipment. In this latter connection, it is to be understoodthat the top and bott'om marginal edge portions of each flue element are' secured to their respective header plate by means of a bead of welding material which is disposed about the flue element and at the juncture of the flue element and the header plate, as at 45. As each of these flues is corrugated substantially throughout its entire length, it is clear that they all present an extremely large surface area to the boiler water which surrounds them and, thus, they function a efficient heat transfer units. I

Referring particularly to Figs. 1, 4, 7 and 8, it is to be understood that the lower header plate 40 of the flue section 36 forms a cover for the above noted lowermost flue section or gas-col ieetm'g hamber 35. As may be understood by "particular reference to Fig. 8, the header plate 4 0 is-provided with a pair of depending side Walls 46, 45, each 'of which is adapted to be Welded to an apertured portion of the combustion cham= her cover or disk 25, as at 41, 41-. igs. 1 and 7 disclose that the lower gas collecting' chamber t5 is completed by a pair of side plates 48, 48 each of which is welded to the opposite side por tions 6': the header plate 40, and to the apex" tli'redportion'of the top or disk of the com-'- bustion chamber, at 49. From this, it-1s to be understood-that theflue section or lower gasoollecting'chai'nber is formed substantially as a rectangular open bottomed box, having side wallas 16, 46 and 48, 48, and a top wall or cover in the form of the header plate-40. This lower gas-collecting chamber -35Ifunctions to gather and 'direct the heat and combustion-gases from the combustionchamber to the various individual flues -39, 39, and it -is -to be understood that it is -almost completely surrounded by the boiler water, so that it will function as a heat transfer unit.

Referring nowto-Figs.'1,-4,7 and-8, it is who understood that'the above noted top headerplate ;tbcomprises the bottom portion of a substantially rectangular *shaped fluesection or upper gas collecting chamber '31. may be'noted'in "Fig. '8, therheader plate 4| has :projecting upwardly from one side thereof, a forward wall 50, and from its opposite -side t-porti'on, an inwardly inclined erear "wall portion 51. These walls 50 and "'51 ofJ-Ithe" header 1 plate act respectivelyxas front and rear wall portions' of theigas- "collecting chamber 31. Thischamber' is'further defined by a pair of side plates 52, 52, each '6! which is suitably welded "at its bottom portion tothe'header plate 4I,-' and 'at' its fronta'nd rear portions to the header plate "walls-50 and 5!. By referring particularly' to Fig. 1, it is to be -under'stoo'd'that the upper-edge portions'of the chamber "walls a're all welded to" an apertured portion of the boiler'bover plate I'I, as'at53, therebyto hlake' fora watertight chamber. By referring to Figs. 1 and 2 it w'illbe 'seen'that this chambenfl is enclosed at its u per portion by a means of a boiler cover 54 which is "forcibly held in position by means of'aibolt 55, the lower thraded end portion 0f whichis' receiyedwithin a fitting 56 suitably provided'upon 'the'iipper face or the header plate 4|. "Betweenithe-cover 54 and the top-cover plate 11 ofithefboilrjthte may beprovided' theus'ual type ofgask'et 51.

From the above, it is to be understood'that after 'the combustion igas'es pass upwardly through the various'flue elements39f39j they-will pass into" the substantially rectangular shaped upper gas-collecting chamber. 31, and thereafter out'thr'o'ug'h a horizontally disposed tubularstack element 38, the inner end portion of which passes through an aperture 58? provided in the rear wall 5| of thechamb'r 31. 'This'stack element- 38 13 i a chimney.

Still referring to Figs. f1 and 7, it is to be particularly understood that there is provided within the boiler cover plate I1, a riser aperture 59 which is disposed directly over the stack tube 38. Fig. 7 particularly illustrates the fact that the stack tube 38 is oval in shape, and ithas its major transverse axis disposed substantially in a horizontal plane. The spacing between the riser aperture 59 and the stack tube is small, and in a preferred form of the invention, the distancebetween the periphery ofthe stack tube and the bottom portion of the riser opening is less than the diameter of the riser opening. The riser aperture 59 functions as a steamvapor egress opening whenever the present boiler is adapted to be connected with a steam vapor heatingsystem. However, on the other hand, if the present boiler is to be employed in conjunction with a hot water heating system, a hot water riser opening 60 may be utilized. This opening 66 is provided in the forward portion of the boiler cover plate [1.

When the above described boiler unit is to be utilized in conjunction with a steam vapor heating system, it is to be understood that steam will be generated in the upper portion of the boiler. This steam will, of course, escape out of the boiler through the riser opening 59, but as above noted, the oval shaped stack 38 is positioned directly across the riser opening so that all of the escaping steam must wipe over and about the stack tube. From this it will be understood that since all of the combustion gases pass through the stack connection 38, the latter element will be maintained at an extremely high temperature, with the result that the steam wiping over this stack will be substantially superheated, and thus an extremely efficient heating medium will be supplied to a house heating system.

In order to adapt the present boiler for heating water for domestic usage, it is provided with a removable coil unit. More specifically, this coil unit comprises a plate 6| which may be removably secured over a frame 62 which surrounds an apertured portion of the rear section of the boiler shell I2. The frame 62 is suitably welded to the boiler shell I2, and is provided with a plurality of outwardly projecting bolts 63, over which the plate 6| may be mounted in the usual manner. Nuts 64, 64 secure the plate 6| forcibly against a gasket 65 which is positioned between the frame 62 and the plate 6 I. As may be best seen in Figs. 1 and. 6, the plate 6| is provided with inlet and outlet couplings 66 and 61 which are adapted to be suitably connected to the domestic hot water system of a house. At the inner side portion of the plate 6|, these couplings 66 and 61 are appropriately secured to the end portions of a single continuous coil of pipe generally designated by the numeral 68. From this, it is to be understood that the coil 68 is mounted upon the plate 6| in a manner such that the entire coil system, including both the coil and the plate 6|, may be removed from the boiler unit as an integral unit. Figs. 1 and '1 particularly illustrate the fact that the coil 68 is adapted to be inserted into the boiler between the inner pair of boiler flue elements 39, 39.

Fresh water may be supplied to the present the outside of the boiler shell l2.

6 boiler and; through either of two apertures 39, 69, and the other aperture may be employed as a drain connection. A steam or hot water return opening 10 is also provided in the rear portion of the boiler shell I! just beneath the hot water coil unit. Referring particularly to Figs. 1 and 5, it is to be understood that water may be fed to the boiler through one of the inlet apertureslill, 69, until it rises to a level generally designated by thev line 1|, and thus, surrounds all of the. individual flue elements 39, 39, as well as the lower gas-collecting chamber 35 and the combustion chamber. From this, it is to be seen that the present. boiler unit presents an extremely large heattransfer surface area to the boiler water, with the result that a high degree of boiler .efiiciency results.

As illustrated in Fig. 5, various conventional instruments for indicating or controlling the operation of the boiler may be mounted upon For example, there is disclosed in Fig. 5, the usual gauge glass 12, try cocks 13, 13, pressure gauge 15, and various hot water limit controls 16 and 11.

From the above, it should also be understood that the present boiler unit is particularly designed so as to be manufactured by productionline methods. For example, each of the individual boiler flue elements 39, 39 is adapted to have its component side elements 42 and 43 stamped out on automatic machinery and thereafter the side portions thereof may be machine welded. Furthermore, each of the completed flue elements 39, 39 is in turn welded to its oppositely disposed header plates 4|]: and 4|, each of which, in turn, forms a portion of a respective one of the flue sections 35 and 31. Thus, the flue sections 35, 36 and ,31' may be quickly and readily assembled as an function as extremely eflicient heat conducting means.

I claim:

1. A heating apparatus of the steam-producing type comprising, a boiler including a vertically disposed shell, top and bottom closure plates, a combustion chamber and a combined water and steam chamber formed respectively within the bottom and upper portions thereof, said top closure plate having a vertically disposed steam riser opening therein, a box-like gas-collecting chamber disposed within the water and steam chamber and adjacent the top closure plate so as to be surrounded partially by steam vapor, a substantially horizontally disposed stack tube connected with said gas-collecting chamber and extending therefrom through said Water and steam chamber and out through the boiler shell, said stack tube passing directly beneath and across the steam riser opening and having its outer periphery spaced below the bottom of the riser opening a distance less than the width of the riser opening so that substantially all of the escaping steam will wipe over and about said stack tube, and a plurality of individual hollow as-conducting flue elements connected with the bottom portion of said gas-collecting chamber and depending downwardly therefrom through said water and steam chamber for connection with said combustion chamber.

2. -A heating apparatus of the steam-producing type comprising, a boiler including a vertically disposed shell, top and bottomclosureplates, a

combustion chamber and a'combined water and steam chamber formed respectively within the bottom and upper portions thereof, the top closure plate having -a vertically disposed steam riser opening therein, a box-like gas-collecting chamber disposed within the Water and. steam chamber and adjacent the top closure plate so as to be surrounded partially by *steam vapor, 'a substantially horizontally disposed oval shaped stack tube having its major transverse axis disposed substantially in a horizontal plane, said stack tube being connected with said gas-collecting chamber and extending therefrom through said water and steam chamber and out through afboiit said stack tube, and a plurality of individual hollow"gas-conducting flue elements bonne'c'ted with 'the bottom portion of said gascollecting "hamberand depending downwardly therefrom through said water and steam-chamber tor-connection with said'combustio'n chamber.

" WARREN H. DE LANCEY.

"REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS wNumber I Name Date 152,064 I Barton June 16, 1874 l-(16,235 Warner Aug-3, 1875 1;805,- 165 Denney May 1-2, 1931 Mikeska .T. Dec. 4, 2,037,019 Hall Apr. 14,1936 2,210,530 7 Bernhard Aug. 6,1940 2,228,602 Kolb Jan. 14, 1941 FOREIGN PATENTS Number Country Date ,,3,-889 Great Britain Oct. 3, 1878 596,038

France Oct. 14, 1925

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