US1067647A - Electric fluid-heater. - Google Patents

Description

W. H. FX.

ELECTRIC FLUID HEATER.

Arrmouron Hmm AUG. a, 1912.

Patented Iuly 15I 2 sHBnT-SBBET 1.

y INI/ENTOR W #ff-Fax W] T NESSES A Homey W. H. FOX.

ELECTRIC FLUID HEATER.

APPLIUATIOITv FILED A'UGl 8, 1912. 1,067,647, Patent-,ea Ju1y'15, 1913.

2 SHEETS-SHEET 2.

UNiTED sTA'rns PATENT oFFrcE.

WILLIAM H. FOX, OF MINNEAPOLIS, MINNESOTA.

ELECTRIC From-HEATER.

Specification of Letters Patent.

l ratenteauuiy 15, 191s.

Application tiled August v8, 1912. Serial No. 714,091.

To all whom t may concern.'

Be it known that I, WiLLIAM H. Fox,`a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Electric Fluid-Heaters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as. will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in electrical liquid heating means and more particularly to an electrical water' heater,-

the object of the invention being to con'- struct a heater which shall be simple and radiator sections.

With this object in view, the invention consists in certain novel features of construction and combinations lof parts as hereinafter set forth and pointed vout in the claims.

In the accompanying l is a view showing a portion of a building in section and illustrating the application of my improvement to the-water eating system in the building. Fig. 2 is an enlarged sectional view, partly broken away,.of the heater, and Fig. 3 is a horizontal sectional view on the line a2-w of Fig. 2.

1 represents the piping of a hot water heating system'in which a plurality of radiators 2 are connected and the usual-'expension tank 3 may be employed. -In the circuit of the piping system, a plurality of my improved electric water heaters i will be connected,-'one of such heaters beinglocated in proximity to each radiator 2.

In constructing, the heater I employ an outer shell 5 provided at its lower end with a basehead or plate 6 having at its peripheral edge an upturned iiange 7 which is threaded interiorly to screw on the threaded lowerend of said outer shell 5. The shell 5 is also threaded exteriorly at its upper endA to receive the internally threadedlower end of an upper head 8 having an inwardly prodrawings, Figure 1' jecting portion 9a lat itsupper endwhich is threaded :to receive the upper end of an inner shell 9.. The shell l9' is spaced inwardly from the shell 5 to form a water space 10 and said shell 9 also forms the inner wall of a larger chamber 11, the outer and 11p-per walls of which latter yare formed lby the head 8 Iand its inwardly projecting portion 9a. `The bottom 1'2 of the inner shell 9 terminates an appreciable dis-tance above the base 6 and forms with the latter and with the lower portion of the shell 5, a chamber 13 with which a water inlet pipe 14 communicates. The head 8 is provided with a hollow boss or .enlargement 15 with which an outlet pipe 16 communicates. pipe is connected, as 4shown in Fig. 1 with the inlet of the radiator and the .outlet of the latter is connected with the inlet pipe 14 of the hea-ter, with which latter the supply pipe of the pipe system is also connected;

The space'within the inner shell 9 constitu-tes aheating chamber 17 in which a plurality of electric heaters are located. Each electric heater comprises aI tube 18 of porcelain or other-.electrical non-conducting material and is provided exteriorly with a spiral groove which receives the resista-nce conductor constituting the heating medium, these conductors bei-ng indicated at 19. The

This outlet several tubes 18 of the heaters are dispo-sed between insulatingblocks or disks 20 .and 21,-.-the latter havin-g adiameter appreciably less than the internal 'diameter of the shell \9 so as to permit any moisture which may to find its way to .the bottom of said chamber as clearly` show-n in Fig. '2. The supporting ibe condensed within the heating chamber 17,

blocks or disks for the heaters are themselves lsupported by 'a' centrally located rod 23,

thelower end of which is. stepped vin an insulating block 24 mounted in a socketat v the center of the bottom 12 of the shell 9.

The rod 23 is threaded at its lower portion for the accommodation of nuts 25-26 disposed respectively above and below the lower supporting block 21 to holdthe .lat-

ter in position. The upper portion of#v the rod 23 is also screw threaded to receive nuts 27 between which the blockA ondisk 2O is secured. The rod 23 projects upwardly an .29a and above the block 28 .an 'insulating u v disk 29 is located and secured to the rod 23 the head 8. A suitable number of binding' posts 32 vare secured to the block or disk V20 and the latter maybe provided with passages for wires leading from the heating ,coils to these binding posts. lllie upper disk 29v has also secured thereto a plurality of f binding posts 33 and this disk is provided with passages for the accommodation of wires 34e which connect the binding posts 32 with the binding posts 33 and the large intermediate block orvdisk 28 is also provided with suitable passages for the accommodeF tion of these wires.

-A cap or cover 35 incloses the disk 29 and vthe depending flange of this cap or cover is removably secured to the head 8 of the heater. Thiscap is provided centrally with a suitable opening 36 through which wires, connected wlth the binding post 33, may be passed and connected'at their upper ends with any suitable switch (which may be located upon said cap) constructed to successively cut in or out of circuit the several electrical heating elements so as to thereby control the temperature and consequently the degree of heat which it may be desired the wat-er shall furnish. This switch may be of the type commonly employed with rheostats.

It will be observed that with -my improvements, the parts are not only compactly arranged, but a large extent of heating surface for the water is adorded and a large heating chamber surrounded by the water to be heated is provided,

Provision is also made .for the ready removal of the heating means without disturbing the general water connections.

Having fully described my invention what I claim as new and desire to Vsecure by Letters-Patent, is: 1. In an electrical water heater, the coming witnesses.

noemerbin'ation with two, concentric shells spaced one from the other/and forming between them a water chamber provided with. an inlet and an outlet, of a head disposed in the upper end of the inner shell, a central rod secured ,to said head, disks adjustably mounted on and supported by said rod, and

yelectric heaters Ydisposed between saidy disks and supported thereby.

2. In an electrical water heater, the co-mbination with two concentric shells forming a water space between them provided with an inlet and an out-let, of two disks located within the heating chamber `formed by the inner shell, electric heaters disposed between said disks, a rod'removably disposed in the inner shell, meansforv clamping said disks adjustablyto said rod, electrical connecting l water space communicating with the rst mentioned water space,'and an outlet port communlcating with the space within said head, cfa rod disposed in the inner shell,

disks secured to said rod, electric heaters supported between said disks, a disk supported on said head] and disposed within the inner shell, another disk. supported by the rod above said last mentioned disk, electrical connections associated with said disks,

and a cap secured to the head and covering the upper disk and the electrical connections associated therewith.

In testimony whereof, I have signed this specification in the ypresence of two subscribv WILLIAM H. FOX. Witnesses -MICHAEL V. Heckmann,

FRED. D. MERRILL.

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