US757665A - Feed-water heater. - Google Patents

Description

No. 757,665. PATENTED APR. 19, 1904.

" J. E. LEWIS;

FEED WATER HEATER. APPLIUATIOR FILED 1120.29. 1902.

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* UNITED STATES Patented April 19, 1904.

PATENT QFFIQE. 1

LOCK COILIPIPE- COMPANY, or HARTFORD, coNNEor oU'r, A cos- I PORATION.

FEED-WATER HEATER.

SPECIFICATION forming art of Letters Patent No. 757,665, dated 'i n 1931904. Application iiled D eceinber 29,1902 Serial No. 136,953. (roman) Todd; whor'rt it nt ay'eonce rfiid I Be it known that I, J osnrn. E. Lnwrs, a citizen of the United States, residing at Hartford, in'the-connty of Hartford and State of Connecticntfhav'e invented a new and useful Improvement in Feed -iVater Heaters, of which th gfollowing isa specification, accompanied by drawings-forming a part of the same, in

'Figure 1 represents a side elevation of a feedwater heaterembodying; my invention. Fig. 2 is a transversmsectional view on line '22, Fig. 1, "Fig. 3 is side elevation with Jon e-halfrpresented in central sectional View,

but with the iriclosedjvater-pipes shown in fulk and Fig.4 is a front elevation of the upper header for the water-pipes with its cap or cover removed.

Similar referencefletters and figiires refer to s milar parts in'the diflerent' views.

lVIy present invention relates to afeed-water heater for heating the water supplied to steam-boilers andfor other purposes, and particularly to that class of feed-water heaters which comprises a casing inclosing a heatingchamber to which steam is admitted and a seriesof water pipes inclosed in the chamber through which the water to be heated is passed, although th'e'object may be accomplished by filling the heating-chamber with: water and passing steamthrough the pipes.

" The objects of my inventionareto increase the efficiencyof this class of heaters-to sime plify their construction, to facilitate repairing, to make. the joints of the apparatusreadily accessible without disconnecting any of the steam or .water pipes, and to provide means whereby a single heater is able to heat water for more than one purpose, and these objects are accomplished by means of tl1 CODSl3IUC- tion and arrangement of parts as hereinafter described, the novel features being set forth in the annexed claims.

Referring to the accompanying drawings, A denotes a shell or casing inclosing a steamchamber B, having suitable provision for the admission of steam thereto and. having openings C and D, Fig. 3, through which the ends of the water-pipes project. Attached to the side of the heater are cast-iron headers E and F, inclosing chamberswith which the-waterpipes communicate. Each of the headers represented in the drawings consists of a shell containing two rectangularcompartments G being wound into spiralcoils of different diameters and arranged concentrically with one coil within-another. The coiled water-pipes have their ends entering and attached to the vertical wall J 2 of the headers E and F next the casing of the heater, either by being eX- panded'therein, by soldering, or by some other suitable and practiced method.

Referring to Figs. 2, 3, and 4 of the drawings, the water-pipes comprising one sht consists of pipes 1, 5, and'9, which are coiled into the larger spiral K. The next or second set consists of the. pipes 2, 6, and 1.0, which are coiled into the next smaller coil K and inclosed within the coil K. The next or third set consistsofthe pipes 3, "Z, and 11 which'are coiled into a still smallercoil K inclosed within the coil K, and the fourth'or last set consists of the pipes 4, 8, and'12, which are coiled into the smallest coil,K inclosed Within the coil K The upper ends the pipes 1, 4, 5, 8, 9, and;l2 communicate wrththe compartment H in thenpper header E and the opposite ends of the pipes 1, 4, 5, 8, 9, and 12 connect with the compartment in theopposite end of the lower header F. Similarly, the upper ends of the pipes 2, 3', 6, 7, 10,and l1 communicate with the compartment G in the upper header and their lower ends with a. similar compartment in the opposite end of the lower header F. The vertical side wall ofthe headers opposite the wall J consists of a removable plate or cap J In Fig. 4 the header E is represented with its cap removed, thereby exposing the ends of the Water-pipes which pass through and are attached to the opposite wall J The ends of the headers are provided with circular flanges L, to which are attached collars L, provided with an internal screw-thread L to receive the screw-thread ends of pipes, as represented in broken lines L Fig. 4, for the purpose of conveying the water to be heated into the compartments of the upper header E and discharging it from the compartments of the lower header F.

The heater represented in the accompanying drawings embodies in a single heater two separate and independent systems of watersupply, one through the pipes 1, 4, 5, 8, 9, and 12 and the other through the pipes 2, 3, 6, 7, 10, and 11, enabling one system of pipes to supply hot Water for, one purpose, such as feed-water to a boiler, and the other set of pipes to supply water for another and different purpose-such as a wash-sink, dye-vat, or other purposeor the discharge-pipes from the header F maybe connected together and the heated water discharged through a single plpe. 1 I

My method of construction embodies several advantages over any heater now in use, so far as I am aware. "I am able to secure an increased heating-surface on the Water-pipes by means of the concentric spiral coils, and each of the water-pipes has a straight section M between the coiled'section and the header and a short bend N between the coiled section and the straight section M, said bent section being curved in an opposite direction to the curvature of the coiled section. This method of bending enables the end of the pipe to be easily brought into registration with its corresponding holein the wall J of the header Without changing the alinement of the straight section M. For instance, the projecting end of one of thewater-pipes can be adjusted vertically by separating or compressing its coils and laterally by varying the qurvature of the pipe at its coiled section and at the bent section N. The employment of the neck J on the headers permits the ends of the waterpipes to project beyond the outside of the .VSO

1. In a feed-Water heater, the combination with a heating-chamber, of a series of pipes said pipes connecting a compartment in one end of'one of said headers with the compartment in the opposite end of the other header, substantially as described.

2. In a feed-water heater, the combination with a shell or casing inclosing a heating- 5- chamber and having openings for the projecting ends of pipes, a series of pipes inclosed in said chamber and having their ends projecting through said openings, headers inclosing chambers communicating with said 7 pipes, a removable cap on said headers opposite the ends of said pipes, and openings in the ends of said headers, and screw-threaded collars attached to theends of said headers for supply and discharge pipes, substantially as described.

3. The combination with a shell or casing, inclosing a heating-chamber and having openings in its sides, of a series of pipes inclosed in the heating-chamber and having their ends 30 projecting through said openings, headers outside said casing inclosing chambers and provided with flanged necks between said chambers and said casing and attached to said casing around said openings, removable caps 5 headers outside said casing inclosing chambers communicating with said pipes, a removable cap on the side of each rheader and opposite said pipes, and an opening in the end of each header to receive discharge and supply pipes.

Dated this 23d day of December, 1902.

JOSEPH E. LEWIS.

Witnesses:

J. B. MURPHY, W. L. HOWARD.

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