US1277664A - Water-heater. - Google Patents

Description

`Is. SWEET. WATER HEATER. APPLICATION .FILED FELIZ. I9I1.

1,277,664 PatentedSe ',1918.

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PatentedSept. 3,1918. 2 SHEETS-SHEET 2 www@ IN V EN TOR.

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l GEORGE sWEE'r,l or OAKLAND, CALIFORNIA. p

` WATER-HEATER;

Larnaca.

l YSpe-ciicaton of Letters Patent.

Patenten sept. 3,1918.

- AApplication filed February 12,1191?. Seral'No. 147,979.1

To all whom t may Concern.' .Y

Be it known that I, GEORGE SWEET, a citi zen of the United States, residing at Galzland, county of Alameda, State of California, have invent-ed certain new and useful- Improvements in Water-Heaters; and I do declare the following to be a full, clear, andexact description of the saine, reference be-y ing had to the accompanying drawings, and

to the characters of reference marked thereon, which form a part of thisy application.

This invention relates to .improvements in water heaters, the object of the invention being to produce a heater having an extensive heating area together with a means combined therewith for rapidly heating aV thin iilm of the water passing throughV the heater just as soon as the heating element is in operation so that there can be an iinmediate withdrawal of the heated water from such heater.

A further object of the invention is to produce a simple and inexpensive device and yet one which will be exceedingly effective for the purposes for which itis de signed.`

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claim.

In the drawings similar characters of reference indicate corresponding parts in the several views. v

Figure 1 is a front elevation of the complete heater showing the door partly ar...

Fig. 2 is a fragmentary portion Vof the upper end of the inner tube.

Fig. 3 is a similar view of the lower end. Fig. 4 is a top plan view of the heating unit.

Fig. 5 is a vertical sectional view of the complete heater.

Referring now more particularly to the characters of reference on the drawings'the numeral 1 designates the casing of the heater which may be of any desired type having a plurality of inlet openings 2VY around the lower end where the heating.

unit will be disposed, and an outlet flue 3 at the upper end.

Y ythrough the pipe 4 which extends vertically through the bottom of the casing 1 to a point immediately above the heating unit. f

- whichV connects with a coil`7 and the 'other conn'ectsfwith az'coil 8, the coil 7 being spaced within the coil 8. TheV pipe 4 extends on upwardly from the branches 5 and Gand connects with a main cylindrical tube 9, of af larger diameter vthan the said pipe 4, such tube 9 reducing in size' at its lower endl() for connection with the saidr pipe 4. At this point of reduction an inner tube 11 is projected into the tube 9 and is of a slightly lessery diameter than the' tube 9 forming an intervening space v12. Both ends of this tube 9: are pressed in the inanner illustrated in Fig. '2, 'closing it coinpletely, and forcing the water passing through the pipe 4 `to divide` and run through the space 12. The upper end of the tube 9 is constructed similarly to the lower end, that is, it reduces as at 10a, to connect with another pipe 4a of the same diameter as the pipe 4.` In making this structure the tube 11 is projected in the tube 9 and the reduced ends 10 and 10? are then brazed onto the tube 9 after having been fitted firmly against the tube 11. This is the preferable form of construction although of course, other desiredV methods might be employed. The pipe4a has a pair Lof branchesa and'6a which receive the terminals of the coils 7 and 8 respectively. The pipe 4a projects through thetop' of the casing 1 and is provided with two lock nuts 13 and 14, one on each side of the top of the casing whereby Vthe heating area is suspended in desired position within the casing 1. The heating unit comprises two annular passage ways 15 and 16, spaced one within the other and connected by radial passage ways 17.- These passage ways are of a considerable depth as shown and provided with burner outlets 18. Two inletV pipes 19 communicate with the passage way 15 for the admission of gas. The depth of the passage ways 15 and 16 allows of a pre-heating and expansion of the gas prior to its passing out through the openings .18 so that when combustion takes place I vattain the greatest degree of heat units possible, .which of course greatly increases the efficiency of Vthe heater. The water is conveyed to the heating area Y The burning gas passes up through the coils 7 and 8 and around the tube 9. There is a film of water passing through the space 12 and thisV tends to heat very rapidly so that when the water is drawn from the heater when in operation it is but a very short time before it is thoroughly heated. The spaced coils in combination with the vertical double tubing presents a ygreat amount of heating area to the flame. In addition to this, as each coil and each tube becomes thoroughly heatedl it tends ,to hold all the heat units in the casing 1 and not allow any waste thereof. The .air for combustion purposes is admitted through the openings 2, n

From .the foregoing description it will Y'be apparent that I have a water heater having some very advantageous features for yproviding quick action lon the film of lwater in the chamber lQtOgether with a. special construction forutilizing as many of the heat unitsy as possible. d

It -will also appear from the above de-v scription that I have produced such a device as substantially :fulfils the object of the invention` as yset fort-h herein.

Iliile this specification -sets forth vin detail the present ,and preferred Vconstruction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention as dened by the appended claim.

Having thus described my invention what I claim as new and useful and desire to secure by Letters Patent is:

A water heater comprising a heating chamber, a pair ofy tubular members of different diametersA arranged one within the other inside Lthe heating chamber, the outer member being gradually vreduced at its ends to form an inlet and an outlet forconnection with .water pipes, the inner member engaging :and Vbeing held in position by the shoulders, of the reducing portions of the outer member and being pressed inwardly at .its ends to 4close the same and form passageways from the outer member proper to ithe inlet and outlet thereof.

In testimony whereof I aiiix my signature.

GEORGE SWEET.

Copies ofthis Apatent may .be ohtainedgfor ve ,cents earch, by, addressingthe IGommissioner'of Patents,

Washington, D. CB

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