US1820318A - Water heater - Google Patents

Description

v g. -25, 1931. E, PAGET 1,820,318 l WATER HEATER Filed Dec'. 29, 1928 2 Sheets-Sheet l "u :mmm

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Aug. 25, v1931.

H. E. PAG ET WATER 'HEATER Filed nec. `29, 192s 2 Sheets-Sheet 2 r Patented Aug.v Z5, 1931 HARRY E. PAGET, F emanen,'ILLINOISv j 'Application-filed'Decembert29y1928i.' Serial No.3'329,281'. v

This invention relatesto` Water-heaters, and morey particularly to that type of heater Wherein'fthe Water to be heated Vis passed l with ease and facility. Y y r2.5'

through coils which arelocated ina casing or chamber, said coils being .surrounded by abody of hot Water or steam. In most cases, according to the present day practice, -it is customary to connect these heaters with* an ordinary steam' boiler or hot Water,` boiler ,of

' cfa) The present invention has for` its principal" object toproduce a simple and inexpensive yet highly efficient and practical structure, Which may be assembled and dismantled Other objects Vand advantages to bef attained Will more ffully appearin-the yfollow,- ing description. f 5

The invention consists in the novel features of construction and in the parts` and con1` binations and arrangement of part-si'herem-r vafter described and pointedrout with particularity in the appended'claims; y,

AIn the accompanying drawings part of this specification,

Figure 1 1s a vieW ill-ustrating'a v forming installation of a heater according toythe presn ent invention; y

Figure 2 is a top plan View. of the heater; VFigure 3 is a vertical sectionth'rough the y heater, taken on or .about kthe yline 3-3l of Figure 4 is a transverse section taken ony or about the line 4 4 of Figure 3; andv y .Figure 5 is a fragmentary vertical section of the upper portion of a 'modification of the structure. 1 f, Referring noW to the drawings, the numeral designates, generally.^the waterheater Y of the present invention, vvhichlatter is 'connected to a-boiler- 11 of 'an ordinary hot Water a regular heating plant, by which arran e or steam heating plant'. VThe connection be# tween theheatervlland `boiler 11 is effected v through thev pipes 12 and 13, both ofwhich connections are, obviously, belowkfthenormal Water level inthe boiler 11, so as ,to insure' a circulation of` hot Water through 'the chamy fully described. The heater 10, as shovvmis connected to an ordinary hot Water.v storage tank 1 4 bv' the pines 15 and 16, through which connections the Water'in the tank 14 is cirber'in the heater ,10, as lvvill belater more culated through the coilslof theheater 10 so- A as to be heated thereby, as Will be presentlyV set forth. Y 1

f Ihe heater ,of the present invention coml prisesl a casing or shelllZpreferably of cylindrical form, and having a closed-endlS, I

vvhich latter extend-s a nipple 19 having an .axial bore 20 therein.y .l The; opposite end of the casing 1:7 is provided With a removable endiclosure or head 21, said end closure or head having an annular collar or flange 22 which fits just insidef'the end of the casing Y 17.` lSurrounding thecollar or lianeje 22 isaV gasket 23 for making ajleaktight. joint be# tween theafend of the casing 17 andthe end closure or head y2'1 Whenthe marginal series` of rbolts-24;'a-re tightenefd.`r

At the .center of the end o isa threaded nipple extension v25 having ,a

bore 26` which veornmiilnicates With thepas- Vsa,g ,'eway27 extending vradially .of the head 21 a and terminating with a port 28, which latter. 4 registers with a port-29 in. alateral lug onjthe casing 17, and thereby establishesfcom closure orhead21f munication `with the- .pipe connection 15 to'` the storage tank lit as r'stherein described.. Within thecasing 17 is a coilV 31 ypreferably of copper tubing. To one end o-ftliis coil is Vattached a special itting or terminal element ,f

32, the latter having an elbow portion 32 intowhich the endof the coil is .ittedwand secu-redas by soldering or Welding to ailorda' 'strong and leak-tight joint.'k The element 32 hasan axial angular extensionl at the end i yof' which is a collar 3A which is detachably secured yto the nipple extension 25'V ofthe.k head 21 byrarcoupling nut 35, a suitable gasketror packing vWasher 36 .being interposed between the adjacent end 'portionsof thenipple 25 and extension 33 of the fixture 32. At the opposite end of the coil 31 is a fixture 37 which is similar to the fixture except that it has a nipple extension 38 which extends through the bore of the nipple extension 19 of the end portion 18 of the casing 17, said nipple extension 38 being screw threaded at its outer end/portion to receive thereon the lock nut 39, which latter impinges the end of the nipple 19 to secure the lower end of the coil with a leak-tight connection, and there being preferably provided a washer or gasket 40 between the nut and nipple. The nipple extension 38 of the fixture 37- is provided with a port 41 to register with an opening 42 in the nipple extension 19, in which opening 42 is inserted the end of the pipe connection 16.

The peculiar end fittings 32 and 37 are essential and important features of the present invention, in that they serve to center the coil within the casing 17 and, further, these fittings make it possible to utilize standard coils of a given diameter but of different lengths. In this way the coils may be obtained in long lengths and the particular 'coil to fit a heater casing 17 of a certain predetermined size inay be cut therefrom, and the fittings 32 and 37 attached to the respective ends thereof: and the portions 33 and 38, respectively, of the fittings are always in axial alignment.

In assembling the heater the fitting 32 of the coil 31 is first attached to the nipple portion of the end closurel or head 21. It is then an easy matter to insert the coil 31 into the open end of the casing 17 and proj eet the nipple portion 38 at the opposite end of the coil 31 through the bore 20 in the nipple extension 19 of the closed end portion 18 of said casing. The head 21 is then adjusted to the open end portion of the casing 17, the gasket 23, of course, having first been placed in position on the head 21, the collar or fiange 22 on the inner side of said head holding said gasket in place and also facilitating the locating of the head on the casing as said collar or fiange fits rather snugly within the casing. The head is releasably secured in place by tightening the Vnuts on the bolts 24, the gasket 23 making the jointure between the head and casing leak-tight and the gasket 36 likewise sealing the jointure between the head and the fitting 32 of the coil 31. The lock nut 39 is then tightened against the nipple portion 19 of the closed end 18 of the casing 17 and the washer 40 which is interposed between said nut 39 and portion 19 and another washer 43 interposed between the inner face of the closed end portion 28 of the casing and the collar 44 on the fitting 37 making this connection leak-tight. Each of the jointures just above described is easily accomplished without any interference from the others, each one being absolutely independent of the other and so permitted because there is a certain amount of give to the coil 31 in a longitudinal direction. When it is desired to take the heater apart, the nut 39 is detached from the nipple extension 38 of the fitting 37 and the bolts 24 are removed, whereupon the end closure or head 21 with the attached coil 31 may be readily withdrawn 'from the casing 17.

In some cases where it may not be desirable or practical to disconnect the fitting 37 from the closed end of the casing 17, the structure may be modified as illustrated in Figure 5 of the drawings, in which. modification the end closure or head 21 may be disconnected from the fitting by which it is coupled to the coil 31. In this modification, a fitting substantially the saine the fitting 37 is substituted in place of the aforementioned fitting 32. That is to say, the fitting designated generally by the numeral 37 has a nipple extension 45 which is projected through an opening in a boss 4G on the end closure or head 21 and on the threaded outer end portion of said nipple extension. 45 is placed cap nut 47 between which latter and said boss 46 is interposed a gasket or washer 48, said gasket 48 and another gasket 49 interposed between the nipple extension 25 and the collar 50 on said tting 37 making the ointures leak-tight. Said nipple extension 45 is provided with a port 51 to register with the passageway V27 in said end closure or head 21. In other respects the structure is identical with that first herein described.

In assembling` the heater constructed according to the above modification, the coil may be first placed in the casing 17v and secured to the closed end portion 18. The end i105 closure or head 21 may be then secured in place on the casing and the cap nut 47 finally applied to the nipple extension 45 of the coupling fixture 37.

In some cases the nut 39 may be closed by a suitable plug, and in other cases a cap nut similar to nut 47 may be substituted for said nut 39.' .However, it ispref'erable to attach a short pipe or nipple 52 to said nut 39 and -provide on said member 52 a drain cock 53. By the latter arrangement the coil 31 is easily fiushed, when necessary, by simply opening the drain cock. In localities where the water contains lime in quantities, whereby the outer surface of the 'coil becomes coated, itis but a simple matter to remove the coil from the casing 17 as hereinbefore pointed out.

Obviously, the heater maybe 'further modified in its structural details without departing `from the spirit and scope o-i the invention as defined in the appended claims. The invention, therefore, is not Vlimited to the specific construction and arrangement shown in the accompanying drawings.

Having thus described my invention, what I claim as'new and desire to secure by vLetters Patent is: y Y

1. In a` water heater ofthe character described, a longitudinally elongated casing having an integral' end wall, and having provision near its Vopposite ends for pipe connections, a removable head for closing the end of said casing opposite to its integralend wall, said integral end wall of the vcasf ing having an external axial ,nipple extension, said nipple extension having a lateral opening for a pipe connection, said removable head having an internal laxial vnipple extension and a lateral passageway communicable with said nipple extension and a pipe connectionk provided therefor at the adjacent end of said casing, a tubular coil extending longitudinallyiwitliin said casing, Vsaid coil having an axial nipple-extension at one end fitted within the nipple extension of (he vintegral end wallof said casing andy hav,-

` ing a lateral opening communicable with said f lateral opening Lof said last mentioned nipple extension, means for detachably securing said axial extension of said coil to said integral end wall of the casing,'said coilV having an axial extension at its oppositeend, and means for detachably connecting said last mentioned axial end extension to said nipple extension of said removable head. f

2. In a water heater of the character described7 ak verticallyfdisposed longitudinally elongated casing having an integral bottom end wall, a removable head for the upper endy of said casing, `said bottom end wall having an external axial nipple extensionprovided with a lateral opening for a pipe connection, said removable head having an internal axial nipple extension and a lateral passageway Vproviding communication-between said nipple extension thereof and a lateral pipe'con-v nection at the adjacent'end of said casing, a

tubular-coil in said casing having axial fend extensions, and means for detachably'connecting the axial endfextensions of said coil respectivelyto said nipple extensions of said `end wall and said removable'head.

encasing shell.

on one end of said coil yincluding an angular extension, anelbow portion, a collar, and a threaded coupling nut for detachably coupling the said fitting on the extension of the` removablehead, substantially as described.

6, In a` water heater of the character described, a `casinghavinga bore in thevend thereof anda removable head, a tubular coil.

within said casing, said coil being detachably connected at one end to the removable head and having at its other end a fitting including an angular extension, an elbow portion, a 'col-V lar toseat the fitting onsaid bore, and a nipple' extension for insertion through said bore.

7. In a coupling element fora coil, a tting including an angular extension, an elbow portion, 'a collar, and a said fitting.

In testimony whereof I have signed my name to this specification. e

' HARRY PAGET.

linternal extension on said removablehead, a' VVtubular 'coil within said casing, and a fitting threaded coupling nut `on' 3. In a device for edecting temperatures,`

a' casing having provision for pipe connec# n tions, a removable head, anV external exten-1 sion in combinationwith said casing,-sa1d`ex.

tensionl having a lateral opening for `apvpipe f Y connection, an internal extension on said removable head having a passageway communieating said extension with a pipe connection,

. a coil within said casing having an extension at one endl to it within the extension of the casing aforesaid, said extension having means for permitting communication between said l'coil anda pipe connection, means for detachably securing said extension .of said coil to said casing, an extension at the opposite end of said coil, and means for'detachably, securing said extensionf't'o the extension of the removable head.

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