US1518883A - Instantaneous water heater - Google Patents

Description

Dec. 9, 1 24- 1,518,883

c. c. WEAVER INSTANTANEOUS WATER HEATER Filed Sept. 27, 1920 2 ShetS-ShGQt 1 NV EE W by Dec. 9, 24. 1,518,883 C. C. WEAVER INSTANTANEOUS WATER HEATER Filed Sept. 27, 1920 2 Sheets-Sheet 2 Patented Dec. 9, 1924.

PATENT OFFICE.

CHRISTOPHER C. WEAVER, OF GARY, INDIANA.

INSTANTANEOUS WATER HEATER.

Application filed September 27, 1920.

To all whom it may concern;

Be it known that I, CHRISTOPHER C. WEAVER, a citizen of the United States, and a resident of the city of Gar in the county of Lake and State of Indiana, have invented certain new and useful Improvements in an Instantaneous Water Heater; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the numerals of reference marked thereon, which form a part of this specification.

This invention relates more particularly to an improved type of an instantaneous water heater wherein the water coils are so arranged that the water just before leaving the heater is run through the lowermost coil of the heater and subjected to the hottest temperature in the heater before escaping through the hot water outlet pipe.

It is an object of this invention to provide an instantaneous water heater wherein water to be heated is first run into an intake chambered pipe and then conducted upwardly through a plurality of coils connected in series to enter the upper end of an outlet chan'ibered pipe and before being discharged passing through a lower discharge coil positioned directly above the heater burners to receive the greatest amount of heat before flowing into the heater outlet pipe.

It is also an object of the invention to provide a water heater wherein water to be heated is first run through a series of superimposed coils and finally through a discharge coil disposed below said coils and directly above the heater burners.

Another object of the invention is to provide a hot water heater with an improved type of a heating unit having a plurality of coils connected in series by means of a chambered intake pipe, the upper coil of said series of coils having one end connected with a discharge chambered pipe to the lower end of which a discharge coil is connected and disposed below said series of coils in position to receive the maximum amount of heat from the heater burners.

It is a further object of this invention to construct a heater unit wherein the various coils are connected in series with one of the two coils through which the water passes last being disposed furthest from the heater Serial No. 413,094.

burners while the other coil is positioned nearest said heater burners.

It is furthermore an object of the invention to construct a heater coil unit wherein the first water intake coil is disposed above the discharge coil.

It is an in'iportant object of this invent-ion to provide a hot water heater of simple and effective design with an improved coil unit the vertical pipes of which are partitioned to afford chambers whereby water coils may be connected in series with the coil through which the heated water passes through last being positioned below the remaining coils and nearest the heater burners.

Other and further important objects of this invention will be apparent from the disclosures in the specification and drawings.

The invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.

On the drawings Figure 1 is a front elevation of an instantaneous water heater embodying the principles of this invention.

Figure 2 is a central vertical section thereof with parts shown in elevation.

Figure 3 is a top plan view of the uppermost water coil.

Figure at is a top plan view of one of the remaining water coils.

Figure 5 is a section taken on line 5-5, of Figure 4-.

Figure 6 is an enlarged sectional view taken on line 66, of Figure Figure 7 is a fragmentary detail section taken on line 'i'-7, of Figure 6.

Figure 8 is an enlarged sectional view taken on line 88, of Figure 2.

Figure 9 is a fragmentary detail section taken on line 99, of Figure 8.

As shown on the drawings:

The reference numeral 1, indicates a base supported by legs 2-, and having integrally formed thereon a circular gas header or burner base ring 3. A plurality of gas burners 4, are ren'iovably supported on the gas header 3, and are arranged in a circle with the burner openings directed inwardly. Supported on the base 1, is a cylindrical lower casing section 5, provided with a front door 6 to permit convenient access to be had to the burners 4. integrally formed within the burner casing section a, are two oppositely disposed upwardly directed water inlet and outlet elbows 7 and 8, respectively.

Projecting into the burner casing section 5, is an auxiliary gas supply pipe 9, the inner end of which is bent upwardly at right angles within the ring of burners 4. Mounted on the inner upturned end of the auxiliary pipe 9, is a pilot burner 10. A gas regulating cock or valve 11, is provided in the auxiliary pipe 9, outside of the burner casing section 5. A gas supply or inlet pipe 12 is provided, and has connected thereto a three way connector 13, to which the outer end of the auxiliary gas pipe 9 is attached. Also connected to the three way connector 13, is one end of a gas pipe 14, the other end of which is connected to the burner base ring 3. An automatic gas valve 15, is provided in the pipe 14, directly below a water pressure control valve 16. The two valves 15 and 16, are connected by a brace ring 17, to properly align the valve stems 18 and 19 of the respective automatic control valves 15 and 16. A Water inlet pipe 20 is connected to the water pressure control valve 16. Connecting the water pressure control valve 16 with the casing inlet elbow 7, is a short pipe length 21. Connected with the casing water outlet elbow 8, is a water outlet pipe 22.

Supported in a suitable groove provided in the upper end of the burner casing section 5 is the lower end of a cylindrical upper casing section 23, adapted to enclose the water coils of the heater. The upper casing section 23, is provided with a front door 24. Mounted upon the upper end of the upper casing section 23, is a top rim or ring 25, for supporting a casing cover or hood 26. The casing hood 26, is provided with a central flue opening.

Disposed within the heater casing section 23, and supported on the elbows 7 and 8, 1s a water coil unit which embraces the important features of this invention. The water coil unit comprises a vertical inlet header or chambered pipe 27, the lower end of which is connected to the elbow 7, by an upright pipe 28. Threaded into the upper end of the pipe 27, is the lower end of a vertical stand pipe 29, which projects upwardly through a suitable opening in the caslng top ring 25. A cap 30, is engaged on the upper end of the stand pipe 29. As clearly shown in Figure 9, the inlet pipe 27, is provided with a plurality of transverse partitions 31, for dividing the interior of said plpe into a plurality of chambers 32. Each of the chamber sections is provided withf an externally threaded water inlet sleeve or arm 33, and an outlet sleeve or arm 34, disposed at an angle with respect to one another. Each of the arms 33 and 34, is provided with a packing ring 35, held in place by an internally threaded cap 36, for the purpose of forming a non-leaking joint with the end of a copper water coil.

A plurality of copper intermediate or entrance water coils 37 are provided positioned one above the other. The ends of each coil 37 are directed toward one another at an angle but are disposed in different planes to permit one end 38, to be attached to one of the outlet arms 33, of one chamber, while the other coil end 39, is connected to the inlet arm 34, of the chamber above the chamber to which the outlet end of said coil is connected. It will thus be noted that water entering the heater through the elbow 7, flows through the pipe 28, into the lowermost chamber 32, of

the chambered pipe 27, and flows out of said chamber into the end 38, of the lowermost coil 37. The water then passes through the coil 37 and out of the coil end 39, entering the next chamber 32. The coils 37, thus are connected in series by means of the pipe 27.

Connected to the outlet arm 33, of the uppermost chamber 32, of the pipe 27, is one end 40, of an upper copper coil 41, the other end 42, of which is positioned and connected with an inlet arm 43, integrally formed at the upper end of an upright outlet chambered pipe 44. The pipe 44, is provided with a transverse partition 45, near the lower end thereof to divide the interior of the same into an upper chamber 46, and a lower outlet chamber 47. An outlet arm 48, is integrally formed on the pipe 44, near the lower end of the upper chamber 46.

A water outlet coil 49, is positioned within the casing 23, below the lowermost coil 37, and directly above the heater burners 4, to permit the outgoing water to receive the greatest amount of heat from said burners. The outlet coil 49, is constructed the same as the coils 37, and has one end thereof connected to the arm 48. The other end of the outlet coil 49, is connected to an arm 50, which communicates with the lower or outlet chamber 47, of the pipe 44. The upper coil 41 and the lowermost coil 49, are separated by the coils 37, but are connected in series therewith by means of the outlet chambered pipe 44. From the lower or outlet chamber 47, of the outlet header 44, the heated water is permitted to flow through a pipe 51, and the outlet elbow 8, into the outlet pipe 22, to the hot water faucets connected with the instantaneous heater. Threaded into the upper end of the outlet pipe 44, is the lower end of a vertical stand pipe 52, which projects upwardly through a suitable opening in the top ring 20. A cap 53, is engaged on the upper projecting end of the stand pipe 52.

The operation is as follows:

The instantaneous water heater is automatically controlled by the opening and closing of the hot water faucets connected in the hot water piping system of which the heater forms a part. Normally the pilot gas valve or cook 11, is opened to permit a small supply of gas to enter the pilot burner 10. The pilot 10, is lighted by opening the door 6, and said pilot is left burning all the time.

hen a hot water faucet connected with the pipe 22, is opened, the water valve 16 is automatically operated by water pressure to cause the valve stem 19 to contact and actuate the gas valve stem 18, to open the gas valve 15. Gas is thereby admitted to the heater burners 4, and escapes therefrom to be ignited by the burning pilot 10. The flames from the battery of burners pass upwardly around the heater coils, resulting in a very rapid or substantially an instantaneous heating of the water passing through the heater coils and the supporting chambered pipes. By opening a faucet the water valve 16 and the gas valve 15, are automatically opened to permit water to flow through the heater coils and at the same time permitting gas to enter the burners 4:.

As the water enters the heater through the pipe 28, it flows into the lower end of the intake pipe 27, and is rapidly heated by flowing upwardly through the respective coils 37 and the chambers 32, to the upper chamber 32, to enter and flow through the upper heater coil 41, and pass over into the upper end of the upper chamber l6, of the outlet pipe a l. The water flows downwardly through the outlet chamber 46, and enters the lowermost or outlet coil 49 of the heater where the water passing through said coil 49, receives the greatest amount of heat from the burners 4, just before leaving the heater by way of the lower chamber 17, and the outlet elbow 8, to flow through the water pipe 22, and out of the open faucet.

Attention is specifically called to the novel arrangement of the coil unit disclosed in Figure 2, said unit embracing the chainbered pipes 27 and 14, to which the water coils are connected. The last coil through which the water flows is positioned nearest the burners 4:, and below the coils 37, so that the heated water just before leaving the heater passes through the hottest portion of the heater casing. The water is accordingly delivered to the water outlet pipe 22, highly heated. It will also be noted that the last two coils through which the water flows are the uppermost and lowermost coils 41 and 4E9 respectively, which are separated by the series of coils 37 connected to the intake pipe 27.

The stand pipes 29 and 52, connected with the pipes 27 and l serve to hold the coil unit braced in position and also provide suitable expansion chambers to equalize the pressure and prevent steam hammering.

I am aware that numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted otherwise than necessitated by the prior art.

I claim as my invention:

1. A water heater, comprising a casing, a water coil unit mounted in said casing comprising a vertical chambered pipe, a plurality of coils connected to communicate with adjacent chambers of said pipe, a top coil having one end connected with the upper chamber of said pipe, a second vertical chambered pipe connected with the other end of said top coil, a bottom coil through which the water passes last, said bottom coil having the ends thereof connected with different chambers of said second chambered pipe, a rim on the upper end of said casing, and an apertured cover on said rim, said chambered pipes extending through said rim and serving as expansion chambers.

2. A water heater, comprising a base, inlet and outlet elbows formed integral with said base, a casing mounted on said base, a vertical chambered pipe in said casing and mounted on said inlet elbow, a plurality of coils connected to communicate with adjacent chambers of said pipe, a top coil having one end connected with the upper chamber of said pipe, a second vertical chambered pipe mounted on said outlet elbow and connected with the other end of said top coil, a bottom coil through which the water passes last, said bottom coil having the ends there of connected with different chambers of said second chambered pipe, a rim on the upper end of said casing and an apertured cover on said rim, said chambered pipes extending through said rim and serving as exaansion chambers.

In testimony whereof I have hereunto subscribed my name in the presence of two subscribing witnesses:

CHRISTOPHER C. WEAVER. Witnesses EARL M. HARDENE, FRED E. PAESLEl-l.

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