US1793323A - Water heater - Google Patents

Description

T. KING WATER HEATER Feb; '1 7, 931.

Filed Aug.- 1-5, 1928 &

45 thereof, but said section being wider at the Patented Feb. 1-7, 1931 UNITED sr res PATENT QFFICE f 'rnoivrson KING, or ro'r'rs'rown, rnivnsvnvan a, ASSIGNOR a 'rnn rnnniinss HEATER COMPANY,'0F- BoYEnrowN, PENNSYLVANIA, A CORPORATION or PENN- SYLVANIA WATER HEATER,

' Application filed August 15, 1928. Serial No. 299,653..

My invention relates to. heaters comprising a series of similar unit sections adapted to be connectedin varying numbers in accordance with the desired capacity of the heater; and particularly to such heaters wherein eachsection is provided with an indivdual gas burner so that each of said sections is, to that extent, independent of the others, and econ omy ofoperation is attainable by rendering 0 more or less of said section burners operative and inoperative in accordance with variable seasonal requirements. v

, As hereinafter described, my inventionineludes features of construction and arrangement of a heater section which is formed of asiiigle casting and which facilitate the circulation of Water therein.

My invent-ion includes the various novel featuresfof construction and arrangement v tween said outer conduits obliquely upward hereinafter more definitely specified.

In said drawings; Fig. I is avertical side edge viewof a single metal casting forming a unitary heater section embodying my improvements. 7 l

Fig. II is an elevation of the right hand side of said section, as shown in Fig. I.

' Fig. IIIis av fragmentary plan sectional view, taken on the line III, III in Fig. II.

Fig. IV is a fragmentary sectionalview,

so taken on the line IV, IV in Fig. II.

In said figures; the heater section 1 is a 1 single casting of metal, of inverted U-shape,

having opposite parallel plane surfaces 2, 2 with spacing ribs 3 extending outwardly therefrom adapted to contact with similar spacing ribs upon adjoining sections to facilitate the assembling of said sections, shaped as shown in Figs. I to, IV'inclusive, in parallel relation; said ribs serving to retain between them any suitable cement by which the joints betweensaid sections may be sealed.

Said casting 1 comprises two outer verticallypendent water leg conduits 4-, at oppoe i site edges thereof; the lower ends of said legs being closer. together than the upper ends bottom than at the top.

The upper ends of said pendent leg con top, and intermediatelof the height, of said section; Said intermediate section 6 forms the top wall of the combustion chamber or .fiIS bQX 'Z, the opposite side walls of which" areformed by said leg conduits 4i. Said'top section 5 and intermediate sect on 6 are con nected by two inner vertical water conduits V 8, parallel with and spaced between said outer vertical conduits 3 and .4. Said inner conduits S are shorterat their outer sides 9 than'at their inner sides 10 so that the water spacefinsaid section is of greater cross sec tional area at its upper corners 12 than else where; which facilitates the circulation'of waterias'hereinafter described.

- Said outer (IOlIClLllllS-d1116(2O11Ile(l36l with said intermediate horizontal conduit 6 by two oppositely counterpart oblique water conduitslet, respectively extending inwardlybefrom the latter and merging into said intermediate condu t 6 respectively in alinement with said nner vertical conduits 8 so that direct water passageways-are formed from the lower ends of said oblique conduitsla 'to the top of the heater section 1 and respectively leading into the-large corner spaces 12,,from

leg conduits 4 thru the oblique conduits letand superimposed conduits8 is induced not only by the fact that said oblique conduits 14 are of small cross sectional area and overhang the burner 19 or other source of heat, but also due to the provision on each of said conduits l l of a series of transversely extending annular outwardly projecting ribs 21 which are preferably outwardly tapered and form a series of passageways 22 between'them for the products of combustion escaping from the chamber 7 intothe flues 15. By'such construction, the surface of saidfconduits'la, exposed to the heat, is very much greater in proportion'to the volume of water in said conduits 14: than in any other portion ofsaid heater section; thus causingthe water in said conduits 14: to be heated to a'higher degree I thanin any otherportion of thesection and thus inducing rapid upward currents of the water, directly, vertically, thru said conduits 14 and 8 and thus effecting the maximum rapidity of re-circulation of the water from and to said pendent legs 4 which is attainable in such a section. Moreover, the surfaces of all of said conduits 4, 5, 6 and 8 which are exposed to the products of combustion in the fire-box 7 and lines 15,16 and 17 is very much augmented, for a given dimension of the sec- 'tion, transverse to its plane, by forming each of saidconduits as a hexagonal prism, as exemplified in Figs. III and IV, with double plane sides in angular relation presented inwardly toward the source of heat, instead of flat surfa es at right angles to the general 7 plane of. the section, as'in the prior art. Of course, suehangular faces present a greater heat absorbing area than if such conduits had but a single plane face extending transversely to the general plane of the section. However, both the outer and inner surfaces of said oblique conduits 14 are curved, as indicated in 'Figs. II and III, to facilitate the passage of water thru them and the circulation of the products of combustionaround them thru said passageways 22. I

Each such section 1 has a plurality of water ports upon opposite sides thereof, form-- ing transverse passageways forcirculation ofwater betweenadjoining sections; thru.

push nipples 24; such ports being exemplified at 25, at the lower ends of said vertical leg conduits 4 and at 26, at the middle of saidtop conduit 5. The respective ports 25 and '26 have individual annular flanges 28 and 29 surrounding the same in spaced relation therewith, as indicated in Fig. II, and extending outwardly from the opposite plane surfaces 2 of said section to the same extent as the spacing ribs 3, as indicated in Fig. I. Said port flanges are adapted for connection with means for sealing said sections in smoke-tight relation at said ports. Such means may include suitable cement which is held, in annular form, within and between the adjoining port flanges, as indicated at 30 in Figs. I and II.

In order to conduct the hot water from such a heater to the radiating means of the heating system connected therewith; I provide the section 1 with a hot water discharge neck 31 at the top thereof, intermediate of its width and in communication with the transversely extending ports 26. Such construction and arrangement, in unitary relation with the section, avoids the cost and trouble of providing, and connecting a separate manifold with the respective heater sections. r

In order to maintain a series of such sections 1 assembled in coupled relation, as above contemplated, I find it convenient to provide each section with a plurality of bolt flanges 32 with apertures 34 for bolts 35, which are provided with nuts, etc., for rein the appended claims.

taining them in assembled relation. As indicated in Fig. II; two of said bolt flanges 32 are at the top of the section immediately adjoining said neck 31 and serve to brace the latter in connection with the top wall of the section; and two of, said flanges are respectively at the outer edges of the lower portions of said leg conduits 4, where they brace the outwardly extending port portions of said conduits 4 in connection withthe outer walls of'the latter; v

The lower ends of said legs 4 are conveniently arranged closertogether than the upper ends thereof, to afford an upwardly increasing area for the fire-box 7 the upper space therein, for the products of combustion, being wider than the fuel space at the bottom thereof and thus allowing for the increase in volume of the fuel incident'toits' combustion. However, said section 1 is, neV- erthelest', wider at itsbottom than at its top and thus affords a very stable construction and arrangement to resist suchlateral stresses as may be imposed upon it by expansion and contraction of the heat radiating system aforesaid connected with the discharge neck However, I do not wish to limit myself to unitary heater sections each having all of the features of improvement aforesaid, as it is obvious that various modifications may be made therein without departing from the essential features of my invention, as defined For instance, the heat absorbing ribs may be alike on both the oblique, sigmoidally curved, conduits 14, e., either all horizontal or all in planes which are radial with respect to the centers of curvature of said conduits the former permitting passage of products of combustion with greater facility, and the latter affording a greater mixing and agitation of said products and retarding their traverse thru the passageways between said ribs and thus affording a greater facility for heat absorption;

I claim:

1. In a heater section, a singlecasting of inverted U-shape comprising a horizontal water conduit and apair of depending hollow legs forming conduits communicating with said horizontal conduit, each of said conduits being hexagonal in cross section,with single plane sides thereof at the opposite plane surfaces of said section, and with double plane sides in angular relation presented inwardly toward the fire-box; whereby the inner faces of said conduits, toward the firebox have a reater heat absorbin area than b V b 7 1f said faces were in a slngle plane; two oppositely counterpart obl que water conduits,

-.of less diameter than the least diameter of said hexagonal condu ts, respectively extends ing upwardly from said legs to said horlzontal conduit, merging into both and formsaid oblique conduits have a greater heat absorbing effect than the other portions of said section and consequent greater heating effect upon the water therein, and induce a rapid circulation of the water obliquely upward in said section from the outer to the inner portions thereof; inducing a downward circulation in the upper portion of said legs, with maximum water heating eificiencyof sectionhaving adischarge neck at the mida dle of its top section, with its axis extending vertically; said section having four bolt fianges with'apertures for bolts whereby adjoining sections may be held together;-two of said flanges being respectivelyat the outer edges of the lower portions of said leg conduits, and two of said flangesbeing respectively at opposite sides of said neck; the apeertures thru said flanges having their axes parallel and at'right angles to the plane 'faces'of said sections. Y

ln'testimony whereof, I have hereunto signed my name at Boyertown, Pennsyl- Vania, this seventeenth day of July, 1928.

THOMSON KING.

the section; said section having intermediate vertical conduits, in spaced relation betweensaid outer leg conduits, respectively in alinement with the upper ends-of said oblique con 1 duits and extending directly vertically to the water space in the top of said section; said water space, at the top of said section, b i

of greater area at the corners of said section than elsewhere; wherebythe rapid'oirculation of the water to and from lique conduits is facilitated.

2. In a heater'section; a single castingof inverted U-shape, having opposite parallel" plane surfaces, with spacing cribs proJecting outwardly therefrom; said casting comprising two outer vertically pendent water leg conduits at opposite edges thereof, the lower ends of said legs being closer together than the upper ends thereof; and said upper ends being connected by two horizontal water conduits, respectively at the top, and intermediate of the height, of said section; said'top and intermediate conduits being connected 7 by two inner vertical water conduits, parallel with, and spaced between, said outer vertical conduits and shorter attheir outer edges than at their inner edges; each of said conduits being hexagonal in cross section; said outer conduits being connected with said intermediate horizontal conduit, by two oppositely counterpart oblique water conduits, extending between said outer conduits, ob liquely upward from the latter, and respectively merging into said intermediate con' duit in alinement with said inner, vertical conduits; each of said oblique conduits being curved upon its outer surface and provided with a series of horizontally extending,

said ob I parallel, outwardly projecting ribs; each of said ribs being outwardly tapered; said sec tion having water ports upon opposite sides thereof respectively at the lower ends of said vertical leg conduits and at the middle of said top conduit; each of said ports having an annular flange, surrounding the same, for

connection with meansfor coupling said sect1on with ad o1ning, similar, sections; said

Images