US994432A

US994432A - Water-heater.

Info

Publication number: US994432A
Application number: US45888608A
Authority: US
Inventors: Baldwin Vale
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-10-21
Filing date: 1908-10-21
Publication date: 1911-06-06
Anticipated expiration: 1928-06-06

Description

B. VALE.

WATER HEATER,

APPLICATION FILED o0I.21,1908.

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WATER HEATER.

APPLICATION FILED 00T. 21, 1908. 994,432, v Patented June 6, 1911.

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BALDWIN VALE, 0F STOCKTON, CALIFORNIA.

WATER-HEATER.

Specification of Letters Patent.

Application filed October 21, 1908.

Patented June 6, 1911.

Serial No. 458,886.

To all whom it may concern:

Be it known that I, BALDWIN VALE, a citizen of the Unit-ed States, and residing at 725 South Pilgrim street, in the city of Stockton, county of San Joaquin, and State of California, have invented certain new and useful Improvements in Tater-Heaters; and -I do hereby declare the following to be a full, clear, and exact description of the said invention, such as will enable others skilled in the art to which it most nearly appertains to make, use, and practice the same.

This invention relates to improvements in water heaters, and consists in the novel construction and arrangement of the parts.

The objects accomplished are the production of a heater with a large heating area within a small compass; whereby a small quantity of water is acted upon by a relatively large quantity of heat; and further to give the heater the shape best calculated to withstand water pressure, and the stresses of expansion and contraction; with a free Water circulation without steam traps or pockets; with few parts, and of pleasing outline; and capable of operation in series or multiple, with the connections used in common practice; and capable of serving the purpose of boiler stand as well as heater for domestic installations; and so insulated and inclosed that no llame can issue from the heater dangerous to surroundings.

Broadly the invention consists of two hollow hemispheres with intercommunicating water jackets, so arranged that the products of combustion spread over the outer surface of the lower hemisphere, and over the inner surface of the upper hemisphere or dome which is of greater diameter. The cold water is admitted to the lower and escapes from the upper hemisphere. d an inclosing shell with the same diameter as the dome, and inclosing the lower hemisphere, and the burner; thus making the heater externally a perfect sphere.

In the drawings: Figure -1- is a vertical cross section of a water heater constructed in accordance with this invention. Fig. -2 is a side elevation of the same connected with a kitchen boiler.

In detail the invention consists of the lower hemisphere #1, (for convenience this will be called a hemisphere although it is slightly less than half-a-sphere, but has a true radius), having the inlet openings #2, and #3 to the water space or jacket #4, between the walls #5 and #6.

The upper hemisphere or dome #7 has the space #8 between the walls #9 and #10. The spaces #4 and #8 are hermetically connected by the necks #11, set into the sockets #12, and sealed by the cement #13. These unions are preferably three in number as three points will match up better than more or less. The two members are drawn together by the cap screws #14, threaded into the lugs #15. Thus joined the two members form a hollow spheroidal water jacket, the external contour of the sphere being completed by the shell #16, meeting and joined at the equator, and inclosing the burner, the bottom #17 of which completes the sphere.

The burner comprises the bowl #18 into which the combustible mixture of air and gas is liberated from the mixing throat #19, having the usual aspirator #20, gas injector #21, and gas cock #22. This burner is designed particularly to prevent back firing. With this end in view the neck is made long, and annular to save space; thus removing the flame as far as practicable from the inlet. The burner cover is composed of a series of annular superimposed plates #23, #24, #25, having the upturned flanges #26, and the twyer flanges #27, the space between these plates forming the outlet for the mixture, causing an annular pyramidal flame. The plates are spaced evenly by bosses on their surfaces; and are held down by the flange #28 on the tubular neck #29, threaded into the running nut #30 below the bowl. The bowl is surrounded by the annular flange #31, with the air spaces #32 between. The function of th1s flange is to confine and thoroughly oXidize the llame before it s reads: and it alsomaterially lessens the heating of the shell #16 by induction. It also allows the burner to be lowered away from the lower heating member without exposing the flame. Any condensation from the heating surface, which sometimes results from burning a Bunsen burner with water gas against a cold surface, would drip into the shell #16 and be evaporated by the heat. The burner llame 1s ignited through the opening #36.

When the heater is connected beneath a reservoir the cold water is introduced through the pipe #33 to the lower heating member, the pipe #34 being screwed into place as a mounting for the burner, which rests upon a set collar #42 on the pipe which serves as a draw off for cleaning the apparatus, it 'being the lowest point. From #l the water flows upward through the connections #1l to the dome; thence through the outlet #35 to the service pipes, or back into the top of the reservoir, the water continuing to circulate through the apparatus by thermosyphon until drawn oil". If the heater is used as an instantaneous or open heater the cold wat-er is introduced through the pipe #34; the pipe #33 being omitted and the socket plugged.

The flame issuing from the burner impinges against the wall #5, which is corrugated and provided with the depending annular flanges 37, around which it circu lates until liberated through the gaps #38 to the next space. It escapes from the lower hemisphere and impinges against the inner surface #9 of the dome, around which it circulates in like maner until the unabsorbed heat escapes through the vent #39 at the top of the heater. To further retard the escape of the heated gases the tube #40 1s set in the vent hole, its lower end extending into the heater below the upper rim of the lower hemis here. The perforations #41 being provi ed to allow enough draft to cause the heated gases to rise to the highestpoint in the dome.4 The function of this tube is to retard the escape of the heated gases without obstructing lthe draft suction of the vent; it is essential that the heater be well ventilated without loss of heat.

Both the lower and upper hemispheres are adapted to be cast as integral pieces as illustrated, preferably of cast iron because of its heat absorbing qualities, cheapness, and strength. There are other metals and alloys of greater cost and efficiency however, equally suitable. Further: the parts may be struck from sheet metal and assembled, the form being altered to suit conditions.

The spherical shape while preferable 1s not absolutely essential to the proper working of the heater, as pyramidal, conical, and cylindrical shapes may be combined 1n substantially the same maner without depart.- in from the spirit of the invention.

-Iaving thus described this invention what is claimed and desired to secure vby Letters Patent is:

1. A water heater comprising a hollow, substantially hemispherical water jacket provided with a corrugated heating surface and a service inlet in` its lower portion, a hollow, substantially hemispherical water j acketed dome of greater diameter than said water jacket also provided with a corrugated heating surface, servceconnections between said water jacket and said dome, a substantially hemispherical shell depending from said dome, a space being formed between said shell and said jacket, said space communicating with the hollow of said dome, said shell being provided with an opening to receive a burner, an upright flange to inclose said burner, and a vent tube set within the top of said dome and extending downward and provided with perforations near the top thereof.

2. A water heater comprising a hollow substantially hemispherical water jacket, with a corrugated heating surface with de# pending flanges, and a service inlet at its lower point, and outlets at its upper point connected with coincident ports in a hollow substantially hemispherical water jacketed dome of greater diameter, with a corrugated heating surface with depending flanges, and a service outlet at its upper point: and a shell depending from said dome and inclosing a burner, a space being formed between said shell and said water jacket, said space communicating with the hollow of said dome, the latter being provided with a vent.

3. A water heater comprising a hollow water jacket provided with a convex corrugated heating surface, a service inlet at its lower point and outlets at its upper points, a hollow water jacketed dome of greater diameter than said water jacket, said dome being provided with a concave corrugated heating surface and with a service outlet and a vent at its upper end, communication being established between said dome and said water jacket, a shell depending from said dome, and spaced from said water jacket, a communication being provided between said space and the hollow of Said dome, and a burner located within said shell.

4:. A water heater comprisin a bod)7 formed with two hollow substantially hemlspherical intercommunicating members comprising a water jacket and a water j acketed dome, the upper rim of the lower member bein set within the lower rim of the upper mem er, said body including a substantially hemispherical shell inclosing the lower member and forming a continuation of the outer wall of the upper member, said shell being provided with an opening to receive a burner, a space being formed between said shell and the lower water jacket, said space communicating with the hollow of the upper water jacket, a vent being provided for said hollow, and service connections to the respective water jackets.

5. A water heater comprising a body including superposed hollow hemispherical members rovided with intercommunicating water jac ets, the u er rim of the lower member being set wit in the lower rim of the upper member, the upper member being provided with a vent opening, a vent pipe extending through said vent opening and In testimony whereof, I have hereunto set terminatin adjacent the tolp wal brf the my hand this first day of September 1908, lower mem er and a burner ooate neath the lower meniber, said body being provided BALDWIN VALE' with passages for permitting heat from said Witnesses:

burner to pass to the interior or hollow WM. S. HODGES, space formed by said members. OLIVER VALE.

Copies o! this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. i