US1779937A - Water heater - Google Patents

Description

Oct. 28, 1930.

E. F. HOLAINGER WATER HEATER F iled July 25 1923 2 Sheets-Sheet 2 {MIL INVENTOR ou/vqa? 5W ATTORNEY latentecl Oct. 28, 1930 v UNITED STATES.

PATENT"oFFicE EMIL F. HOLINGER, on NEW YORK, N. Y., ASSIGNOR To-Hunso'N ELECTRICAL HEATING CORPORATION, or NEW YORK, 1v. Y., ;A CORPORATION, or NEW YORK WATER HEATER 1 Application filed July 25,

This invention relates generally to water heaters for domestic use,- but is more particularly designed to produce such a heater adapt- I ed for operation by an electrically operated 5 heating member. In essence the invention comprises a water holding tank having an opening in one Wall and an apparatus adapted to hold an electrically operated, or equivalent, heating unit and distribute the heat therefrom, which apparatuscan be inserted through said opening as a unit and then attached to the tank for closing said opening.

The best form of apparatus at present known to me embodying my invention is illustrated 1n the accompanying two sheets of drawing in which sFig. 1 is a vertical central-section of thehot waterheater, and r Fig. 2 is a horizontal section on line ofFig.1.

Throughout the drawings like reference characters indicate like parts. 7

1 is a cylindrical boiler shell, 1 the top or dome sheet therefor welded or otherwise joined to one end thereof and 1 the inwardly dished'bottom head welded to the other end of shell 1. A hole 2 is formed preferably centrally of theheater dome 1*,and

. this is surrounded by. a welded-011 ring 3, to which a cover. plate 1- may be held by bolts 5, 5. A tube 6, adapted to contain an electric heating member or other heating member,

has one end welded into an opening in plate 4. Tube 6 is closed at its other end by plate 7 preferably welded thereto, and this plate carries a central, projecting pin 8 which engages an opening 10 in'the bridge-like member 9, which is welded to the bottomhead 1". As shown, pin 8 is a short section of tube, as this can be conveniently welded to plate 7;

Thenipple 11 serves as the water inlet connection to water tank formedby 1, 1, 1",

and 12 is the nipple for the outlet connection.'

13 is a nipple for a drain connection and 14 a nipple for a thermostat. I

15 is the cylindrical portion of an outer shell adapted to be closed at one end by the bottom plate 15", which may be welded there- 59 to, and also at the other end by the top plate by radiation from thehot water tank.

1928. Serial No. 295,134.

15*. This casing 15, 15*,15", surrounds the Fig. 1.

17 is a cylindrical skirt'or jacket surrounding heater-holding tube 6 and welded thereto at the upper end, near which point it ,is

provided with openings 18,'18,vin its walls.

The lower end of this tubular skirt 17 is left open and may be centered with'reference to tube 6 by inserting three pins 19 in the annular space between the two tubes. 20 is a third tube surrounding tubular jackets '17 and leaving a small annular space between the two, said tube QO being welded to tube 17 F at either end so as to form ahermetically sealed annular air jacket around it.

In assembling the parts the water tank 1 is set in the jacket shell 15, being accurately centered with reference thereto by the flanges of the tank head 1 slipping over the inwardly curved uide lugs 16, 16, on the bottom plate 15 of the outer casing. The various nipples 11, 12, 13, 14, are then inserted and the heater-carrying unit is placed in the tank, the pin 8 engaging the recess 10 in the member 9 to center the same. The space be- -tween the walls of the tank and the casing 15 may then be filled with any loose heat insulating material, the jacket cover 15 is placed in position, and bolts 5, 5, inserted through it and through plate 41 into ring?) to hold the parts together, and close theopening to water tank 1. a

While the heater carrying unit is rigidly fastened only at one end, the pin Sin the other endand nestedin member 9serves to prevent its vibrating injuriously during transportation and handling of theheater.

. If anything goes wrong with the heating apparatus, the whole unit can be removed at once by simply taking out bolt 5, 5, and a new one inserted. 7

r In operation the water in the annular space :i:

between tube 6 and its tubular skirt 17 is rapidly heated by radiation and conduction from the heater in tube 6 and rises with corresponding rapidity, flowing out through the holes 18. This zone of high heat inside of tube 17 is protected from cooling by direct radiation to the water in the body of the tank by means of the air jacket formed by outer tube 20, as beforeexplained. As a result whenever the heat is turned on there will be promptly produced aflbodyof warm or hot water at the top of tank 1 long before the main body of the water in the middle and lower portion has absorbed any substantial amount of heat. This quickly formed body of hot water can be drawn immediatel upon by the user to whom it will be de ivered through the discharge nipple 12, and incoming cold water through inlet nipple 11 will largely pass immediately to the lower end of the tube 17 and upward within the same to be immediately heated and delivered at the top of the tank to maintain the supply of hot water there segregated for immediate use. Vhen the user ceases to draw on this supply, and the heater is continued in action, the hot water zone will gradually extend downward and through the body of the tank as the water confined therein moves in closed loop paths producing element through its other end, a

surrounding skirt for said tube welded to said tube at oneend and provided with perforations in its walls near said end, whereby it is adapted to form an annular water passage between said tube and skirt, and a sealed air jacket surrounding said skirt comprising a continuous tube of larger diameter welded to said skirt near each end thereof.

2. In a water heater the combination of a water tight tank having an opening in its upper wall and a heater-holding unit comprising a tubular shaped structure closed at one end, open at the other end, and having a flange surrounding said open end fastened to said tank wall around the margin of the opening therein; whereby said heater-holding unit may be readily'mounted in, or removed from, said tank interior combined with a projection from the closed end of said heater holding unit and a perforated member carried by the adjacent walls of the tank engaging said projection.

3. In a water heater the combination of :1

cylindrical tank having an opening in one head, a tube adapted to be inserted through said opening, said tube being closed at one end and provided at the other with a flange adapted to be fastened to said tank head around said opening, bolts for fastenin said flange to said tank head, and a tube of filrger diameter surrounding said first mentioned tube, fastened to it near its flanged end and provided with perforations near its saidfastening and opening at'itsothe'r end, together with a third tube of still larger diameter surrounding said seoond tube and sealed thereto at either endpwhereby an annular water circulating passage is formed around said first mentioned tube and aheatfinsulating jacket formed about saidsecondtube.

4. In. a water heater'the combination of a cylindrical tank having an opening in one head, a tube inserted through said opening, said tube being closed at one end and provided at the other with a flange fastened to said tankhead around said opening, and a tube of larger diameter surrounding said first mentioned tube, fastened to it near'its flangedend, and provided with perforations near its said fastening, together with a projection from the closed end of said first mentioned tube and a recessed member for engaging said projection mounted onthe other through said opening and attached to said wall, the free end of the heater carrying unit engaging a recessed member carried by the adjacent wall of the tank and to be thereby supported. a

6. In a water heater :1 heater-holding unit comprising, in combination, a-tube closed at one end, a second tube surrounding'the first mentioned one and fastened thereto at one end and a plurality of pins inserted between the free ends of the two tubes to hold said; ends concentric one to another.

7 In a water heater the combination of a cylindrical, water-tighttank having an inwardly dished bottom head, and a cylindrical shell for a heat insulating jacket surrounding i saidtank, the bottom plate of said shell having a series of circumferentially arranged. inwardly curved lugs set'on theinner surface thereof having exterior convexly curved faces adapted to engage the interior of then flange of said tank bottom head and center it with reference to said shell when the parts are assembled.

' EMIL F. HOLINGER.

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