US1827581A - Copper coil water heater construction - Google Patents

Description

Oct. 13, 1931. H. HOWELL COPPER COIL WATER HEATER CONSTRUCTION Filed Nov. 11, 1930 Invenlor Q By 2mm A llomey Patented Oct. 13, 1931 HARRY HOWELL, or gunman, 02110 corrna COIL WATER HEATER consrncc'fion Application filed November 11, 1 930. Serial No. 494,978.

This invention relates broadly to water heaters, and has more particular reference to that type of water heater including a double copper coil through which the water to be 5 heated is conducted.

A primary object of the present invention is to provide suitable means whereby, by taking advantage of the resiliency in the coil, to either lengthen or shorten the distance between the top and bottom connections of the coil as may be required, the coil may be shortened or lengthened, for coupling with the conduit pipes leading to and from the boiler without the necessity of removing the coil and at the same time compensate for the expansion and contraction as occasioned from the hot and cold water circulating through the coils, and the conduit pipes associated therewith.

1 iii} Other objects and advantages of the invention will become apparent during a study of the following description taken in connection with the accompanying drawings, wherein Figure 1 is an elevational view of a heater 7 embodying the features of my invention.

Fig. 2 is a longitudinal sectional view therethrough, taken at substantially right angles to Fig. 1.

Fig. 3 is a top plan view from the heater casing, the heater coils being removed.

With reference more in detail to the drawings, it will be seen that I have shown a conventional type of water heater including the usual jacket or casing 5, having the double copper water circulating coils 6 mounted therein, and suitably arranged in the bottom of the jacket or casing 5 is the conventional valve controlled burner 7 As comprehended by the present invention, the uppermost convolutes of the inner and outer coils of the double heating coil terminate in an upwardly directed manifold or coil coupling 8 communicating with the inner and outer coils. The manifold 8 extends upwardly through a notch'14 in the top wall of the casing, and at its upper extended end is threaded for threaded engage ment with the lower end of a pipe (not shown), which leads to the top of the water 9 boiler (not shown).

"fold 9 and bears against the plate 12 for norten ding through the notch 14 and adapted for The lowermost con'volutes of the inner and outer co1ls,-anjd aswell known intheart, are

in communication w'ith'a manifold 9, which intake manifold 9' extends through an opening 10 in the'wall of the casinggandjat, its

'outerextending intake end, the manifold 9 is threaded asat 11 for threaded engagement with the water feed pipe (not shown).

As further comprehendedby' the ini'ention the opening 10 through which the intake of the manifold 9 extends, is ofgreater diamater than said intake, ,to permit freedom of movement Verticallythrough the opening10. 'For normally closing the slot or opening 10,

there isprovided a rectangular plate 12, provided intermediate its upper and lower ends with a suitable openingfor accommodating the extended-threaded end of the manifold 9.

A nut 13 is threaded on the end of the ma1iimally retainingthe plate in position on said manifold.

The casing 5 at the upper end thereof and in longitudinal alinement with the opening 10 is provided with a vertically disposed notch 14 communicating at its upper end with the notch 14'. The outlet manifold 8 adjacent its lower end is provided with a laterally extended threaded extension 15 ex-...

vertical movement withinthe notch; I

Carried on the extension 15 and disposed against the outer face of the casing 5 is an elongated plate 16 provided with an opening. intermediateits upper and lower ends for accommodating the extension 15. A retaining nut 17 is threaded on the; extension 15 and bears against'the plate '16 for retaining the same-in contact with the casing 5. no

' From the foregoing, it will beseen that I have provided means for utilizing the expansible and contractible qualities of the coil to permit adjustment in the length of thecoil without the necessity of removing the coil' and wherebythe coil may be either lengthened or shortened the required distance between thetop and bottom connections of the coil with the conventional, pipe fittings, leading to the intake manifold 9 and the conventional water pipe, leading from the outlet manifold'S. p

Furthermore, it is to be understood that the plate 16 is to be retained loosely against 7 e the casi'ng'to slide freely parallel-to the easing whereby, through the natural springiness of the multiple circulating coil the same may belengthened or-shortened as required when 1 coupling the pipe or outlet 8 to the. pipe lead-1.. s 5

ing to the boiler.

Thus, as before stated,-my improvement I permits, because of the flexibility of the coil, the lengthening of the coils, or the shortening thereof as may be necessaryinmaln ng the connections to the boiler, this being the and slidably contacting the wall of said casing, whereby said second projection may be moved longitudinally of its slotfor expandmg or contracting the circulating coil to facilitate coupling of the outlet manifold to a conduit pipe of a boiler. a In testimony whereofI aflixvmy signature.

- case in event the riser pipe to the'boiler should fbe out a' trifle too long or too short.

" Even though I have herein; shown and I described the preferred embodiment of my in- -vention. it is to be understood that the same is'sus'ceptible to changes fully'com'orehended bvthe spir'itof the inventionas herein described and the scope of the appended claims.

Having thus'described my invention,"wl1at or v '1; In c omblnation. a water heater comprising a casing. said casing having: top and verti- -eal side-walls, a notch extending transverselv ofthetop wall of-the'casing and vertically 3 along thervertical wall of the casing at the top thereof. a resilient water circulating coil f T .arrangedwithin'said'c asingan outlet manifold at the top of the coil'extnding: through 'thenotch'in the'topof the ca'sin'g,an'eiztenp -sion'nro'videdon the manifold and extending j' I fi through the notch in the vertical wall of the f j casing, said casing adiacentits lower-end being provided witha relatively large opening, 2

an intake manifold for the coil atthe lower i i thereof extending-through said opening. a uplate on the extensionof the intake manifold, a nut threaded on said extension of the intake adjacent the wall-ofthe casing, and said firstendof'the coil. and having "an 'endportion manifold for-securi'ngsaidplate thereon and mentioned extension having a plate arranged jthereon for slidable contact with the wall of the easing, and a nut threaded on the firstposition thereon.-

mentioned extension'for retaining-theplate in 1 v 2 lIncombinatlon. a waterheater including,a casing, a multiple wate'r circulating c011 arranged within thef'casin-g and provided with an inlet-manifold and anzoutlet mani- Y 55 fold, andmeans for mounting said coil within 7 Y j the casing,-said means includingaprojection' 1 1 Y Y providedomsaid inlet'manifold and projectmg through-aslot provided in the 11 ofthe

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