US1214468A - Water-heater. - Google Patents

Description

S. J. HURWITZ. WATER HEATER. APPLICATION FILED MAR. 2, I916.

1 23 @fifig. Patented Jain. 30, 1917.

3 SHEETS-SHEET I.

S. J. HURWITZ Patented Jan. 30, 1917.

3 SHEETS-SHEET 2.

5.1. HURWITZ.

WATER HEATER. APPLICATION FILED MAR- 2, I916.

LZIQAGE I V Patentedian. 30,1917.

3 SHEETS-SHEET 3.

WJQTEB-HEATEE.

Specification of Letters Eatent.

Patented can. so, tea a.

Application filed March 2, 1918. Serial 150. 81,747.

To all whom it may concern:

Be it known that I, SA'MUEL J. Hun- Wrrz, a subject of the Czar of Russia, residing at Youngstown, in the county of Mahoning and State of Ohio, have invented new and useful Improvements in Water-Heaters, of which the following is a specification.

lhis invention relates to improvements in water heaters and, in the present instance, has particular application to a water heater of the gas burning type.

I In carrying out the present invention, it is my purpose to provide a water heater wherein the water carrying pipe and the heat ng element will be substantially coextensive with each other so that the water carrying pipe will be heated, its entire length,'thereby enabling the water to be heated in 9. mmmum time and with a comparatively small consumption of fuel, and furthermore, by this arrangement of water carrying and heating pipes the water in a coil or bank of pipes may be heated instantaneously and owing to the heating means following the coil or bank for its entire height the heat will be gradually intensified as the top of the coil or bank is approached, thereby enabling practicallyv all of the heat units to be utilizecl.

It is also my purpose to provide a water heater wherein the water carrying pipe will be so formed in cross section as to enable the water therein to absorb practically all of the heat units from the heating element below such water carrying pipe, thereby reducing waste of the heat units.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts here inafter set forth in and falling within the scope of the claims.

In the accompanying drawings: Figure 1 is a view in side elevation of a water heating coil constructed in accordance with the. present invention, the casing being shown in section. Fig. 2 is a horizontal sectional view through the same, one convolution of the coil being shown 1n top plan. Fig. 3 is a horizontal sectional view through a modified form of the invention showing the water carrying pipes and the heating pipes arranged in a bank. Fig. 4 is a vertical sectional view through the same. Fig. 5 a transverse sectional view therethrough. Fig. 6 is a cross sectional view through the heating pipe. Fig. 7 is a similar view through the water carrying pipe. Fig. 8 is a fragmentary top. plan new of the heating pipe. Fig. 9 is a horizontal sectional view showing the tubes as arranged in three banks. Fig.

and Particularly to the construction illus- I trated in Figs. 1 and 2, 1 designates a vertically disposed coil deslgned to carry water. The lower endof the coil 1 is equipped with a coupling 20f suitable construction whereby the co1l may be connected with a'water supply pipe, while the outer end of the coil is equipped with a coupling 3 of any suitable construction whereby the coil may be connected with an outlet pipe.

In accordance with my present invention, each convolution of the coil is elongated in cross section, as shown in Fig. 7 of the drawings, and formed in the top wall of such. convolution is a groove 4 arranged at the center of such wall and extending around the entire convolution, while formed on the bottom of'each convolution of the coil centrally thereof and depending therefrom is a rib 5 extending around the convolution. In the present instance, the top wall of the convolution is inclined downwardly from the groove t toward the outer end edges of the convolution. Disposed within the groove 4. in the coil 1 and extending throughout the length of the coil 1 is a heating coil 6 having the convolutions thereof disposed beneath the respective convolutions of the coil 1.. lhis heating coil 6 is designed to carry gas or other fuel and the convolutions thereofare provided with burner tips 7 arranged upon each side of the ribs 5 on the convolutions of the coil 1 and the burner tips upon one side of the rib of the coil 1 diverge outwardly from those on the other side of the rib and formed in the coil 6 betweenthe burner tips 7 is a groove 8 extending throughout the length of the heating-coil and designed to receive the ribs 5 on the I convolutions of the coil 1 so as to cooperate with the groove 4: to hold the heating coil in proper position within the water carrying coil 1. The lower end of the heating coil 6 is adapted to be connected to a suitable source of supply and is provided with the usual air valve 9 and a gas controlling valve 10, While the upper end of the coil 6 terminates contiguous to the upper end of the water carrying coil.

In the use of the heater, the valve 10 is opened and the gas traverses the coil 6 and issues from the tips 7 and is ignited. Owing to the arrangement of the tips 7 and the cross sectional formation of the coil 1, the

heater. As the water carrying coil 1 is elongated in cross section it will be noted that the water therein absorbs a relatively great quantity of heat from the flame, thereby reducing waste, while owing to the arrangement of the heating coil and the water carrying coil, the water inthe coil 1 may be heated in a relatively short period and practically instantaneously.

In Figs. 3, 4.. and 5 of the drawings, 1 have shown two vertical banks of tubes 11 and 12 arranged side by side. In the present in-' stance the tubes in the bank 12 alternate with the tubes in the bank 11. Each tube in each bank 11, 12 is of a cross sectional shape corresponding to that of each convolution of .the coil shown in the preferred form of the invention and seated in the grooves 4; in the upper sides of the respective tubes are heating pipes 13 extending the full length of the respective tubes and each of a cross sectional configuration corresponding to that of the convolutions of the heating coil 6 shown'in the preferred form of the invention. The heating pipes 13 at one end of the heater are tapped onto branch pipes 14 arranged adjacent to the respective banks of tubes and having the lower ends thereof connected with a gas supply pipe 15, while the other ends of the heating pipes 13 are closed by means of caps or plugs. The tubes in the bank 11 are connected to the respective tubes in the bank-12, at one end of the heater, by means of elbows 16, while interconnecting the tubes in the bank 11 and the tubes in the bank 12, in the reverse order, at the other end of the heater, are elbows 17 The lower tube in one of the banks is connected, at one end, with a supply pipe 18 and the upper tube in one of the banks is connected, at one end, with an outlet pipe and owing to the connections between the tubes the water will traverse the tubes successively, passing into and out of the tubes of the banks alternately.

It will be noted that each tube in each garages bank will be heated for its entire length owing-to the length of the pipes 13, while the heat from the flame issuing from each pipe will envelop the tube immediately above such heating pipe and the heat from the lower pipes, ascending, will commingle with the heat from the upper heating pipes and so augment the action of theupper heating pipes, thereby intensifying the heat at the upper end of the banks of tubes so as to in= ure the maximum heating of the water in fhe tubes in the minimum time and with comparatively small fuel consumption.

If desired, fire bricks or other suitable heat retaining elements may be inserted in the spaces'between the tubes in the banks 11 and 12 so as to retain the heat from the heat ing-Pipes.

In the preferred form of the invention, 1 have shown the water carrying coil and the heating coil as inclosed in a casing 19 of any suitable construction. I I

In the construction illustrated in Figs. 9 to 12 inclusive, 1 have shown the tubes as arranged in three banks 20, 21 and 22 and, in the present instance, the tubes in the bank 20 aline horizontally with the respective tubes in the bank'22, while the tubes in the bank 21 alternate with the tubes in thebanks 20 and 22. These tubes in the banks 20, 21

and 22 are interconnected by means of' elbows 23 and the elbows are so arranged that the water or other fluid to be heated will traverse the tubes successively and pass from one bank to another alternately, thereby enabling the fluid in the tubes to be heated to the maximum temperature when such fluid leaves the heater. In this construction, the heating pipes of each bank of tubes are connected with a vertical branch pipe 24 and the branch pipes 24 are connected with a common supply main 25.

While I have hereinshown and described certain preferred forms of my invention by a Way of illustration, 1 wish it to be understood that I do not limit or confine myself to the precise details of construction herein- 1. In a water heater, a water carrying pipe elongated in cross section .and having the upper surface formed with a longitudinally extending groove and the lower surface formed with a longitudinally extending rib,

and a heating pipe disposed in the groove and having the upper portion thereof formed with a longitudinal groove to receive the rib on an adjacent upper water carrying pipe.

2. in a water heater, a Water carrying pipe elongated in cross section and having the upper surface formed with a longitudinally extending groove and the lower surface formed with a longitudinally extending rib, a heating pipe disposed in the groove and having the upper portion thereof formed with a longitudinal groove to receive the rib on an adjacent upper water carrying pipe, and burner tips on said heating pipe at each side of said rib and diverging outwardly from the tips on the other side whereby the flame will be directed the next uppermost water carrying pipe so said water carrying pipe.

against the bottom of that the heat from said flame may envelop 3. In a water heater, a water carrying pipe and a fuel carrying heating pipe parallel with said water carrying pipe and extending throughout the length thereof, said water carrying pipe and fuel carrying pipe having the adjacent portions thereof formed to interfit each other.

. In testimony whereof I afi'ix my signature 1n presence of two witnesses.

SAMUEL J. HURWITZ.

Witnesses:

JOHN J. MCCARTHY, BENNETT-S. JONES.

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