US1193304A - simonds - Google Patents

Description

G. E. SIMONDS.

TUBULAR HEATER.

APPLICATIQN FILED OCT. 18. 1915.

Patented Aug. 1, 1916. 2 SHEETS-SHEET I 5 m w r 01% 01% r I m2 y 075 witnesses G. E. SHVIONDS.

TUBULAR HEATER. 7

APPLICATION man OCT. 1a. 1915.

1 193 304, Pal-tented Aug. 1,1916.

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GEORGE E. SIMONDS, 0F MINNEAPOLIS, MINNESOTA, ASSIGNOR T0 DOMESTIC ENGI- NEERING- COMPANY, OF MINNEAPOLIS, MINNESOTA, A CORPORATION OF MINNE- TUBULAR HEATER.

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Specification of Letters Patent.

Patented Aug. 1, 1916.

To all whom it may concern Be it known that I, GEORGE E. SIMONDS, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Tubular Heaters; and I do hereby declare the following to be a full, clear, and exact descrip tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to tubular water heaters that are especially adapted for use in connection with hot water heating systems; and, to this end, generally stated, it consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a transverse vertical section taken on the line 00 m of Fig. 2, some parts being broken away; Fig. 2 is a longitudinal vertical section taken on the irregular line m m of Fig. 1; Fig. 3 is a fragmentary detail view taken on the line :0 00 of Fig. 1, on an enlarged scale; and Fig. 41 is a detail view in,

section of a portion of-the casing, on an enlarged scale.

The entire heater is supported on a cast metal base, 1, open at its front end, and affords the firepot and ashpit of the heater. The front 2 of the heater is also made from cast metal, extends from the floor-line to the top of the heater and closes the open front end of the base 1. To this front 2, is hinged a stoking door 8, an ash door 4: and a cleanout door 5. It is, of course, understood that the doors 3, 1 and 5 may be made single or double, depending on the size of the heater.

A grate 6 made in two sections is mounted in the base 1 between the fuel door- 3 and the ash door 4:. Each grate section ismade up of a plurality of laterally spaced bars 7, eachhaving a depending arm 8 and trunnions 9. The arms 8 of each grate section are connected by a rocker bar 10, provided for shaking the respective grate sections. As best shown in Fig. 1, the grate sections are set oblique in hopper-like arrangement so that the fuel will work to the center of communication therewith.

spaced, one pair above the other.

the grate. The trunnions 9 on the upper ends of the grate bars 7 are journaled in segmental seats 11, formed in the side walls of the base 1, and the trunnions 9 on the lower ends of said bars are journaled in segmental seats 12, formed in a heavy bar 13. This bar 13 is removably supported at its ends in U-shaped brackets 1-1, one of which is integrally formed with the rear wall of the base 1 and theother of which is formed on the front 2.

Extending from the front to the rear of the heater, is a relatively large header 15 and a relatively small header 1G, vertically spaced,the former above the latter. These headers 15 and 16 are connected by a multiplicity of upright water tubes 17 and have The water tubes 17 are spaced one directly back. of the other with considerable clearance between adjacent pairs of tubes. The lower header 16 is spaced above the grate 6 a distance sufficient to give the firepot its required depth. Each upright water tube 17 is provided with a multiplicity of pairs of oppositely projecting water tube extensions 18, vertically The outer end of each water tube extension 18 is closed and theinner end thereof has communication with the respective upright tube 17 through upper and lower perforations or openings 19, formed in said tube 17.

On each side of the heater and extending parallel to the headers 15 and 16, is a pair of manifolds 20 and 21 vertically spaced, the

former above the latter. Each pair of manifolds 20 and 21 is connected by a plurality of upright water tubes 22, located one directly behind the other. These water tubes 22 are laterally spaced substantially the same as the water tubes 17 and are staggered with respect thereto. The water tubes 22 have communication with the manifolds 20 and 21 and are considerably shorter than the water tubes 17 thus bringing the lower manifolds 21 substantially the same distance above the grate. sections as the header 16, and also bringing the upper manifolds 20 below the header 15.

Each water tube 22 is provided with a plurality of laterally and inwardly projecting tube extensions 23, which overlap the tube extensions 18 and are staggered, both horizontally and vertically with respect thereto. These tube extensions 23 are also closed at their outer ends and have communication with the water tube 22 in the same manner as the tube extensions 18 have with the tubes 17.

The header 15 has communication with each manifold 20 through a pair of cou pling water tubes 2% and the lower header 16 has communication with each manifold 21 through a coupling water tube Each coupling water tube at and 25 is made in two sections and the sections thereof are connected by flange heads 26 detachably bolted together. The sections of the coupling tubes 2% and 25, connected directly to the manifolds 20 and 21, have interposed therein elbows 27 which give the same the required shape, in order to make the proper connections between the headers and manifolds.

All of the joints connecting the water tubes and the coupling tubes to the headers and manifolds, and also, the joints connecting the tube extensions to the upright tubes are formed by welding. It will thus be seen that the heater is made up of three sections or units detachably connected by the heads 16 and supported on the base 1.

in the form of asbestos plaster 28, applied to metal lath 29 and covered on its exposed face with sheet metal 30. The two sides of the casing extend between the headers 20 and 21 and between the front casting 2 and rear wall of the casing. The rear wall of the casing is placed directly against the exposed faces of the rearmost tubes 17 and 22 and tube extensions 18 and 28. The rear end portions of the headers 16 and manifolds 21 project through the rear wall ofthe casing, and the coupling water tubes 25 are 10- cated entirely outside of the casing. The top of the casing extends betweenthe manifolds 20, below the header 15, and rests directly on the uppermost tube extensions 18. The metal lath 28 of the casing may be secured in position by wiring the same to certain of the tubes of the heater, or securing the same in any other suitable manner. The receiving end of the hot water distributing pipe 31 caps the header 15 between the coupling tubes 26, as shown in Fig. 2, and the cold water return pipe is arranged to discharge into the rear end of the header 16. The smoke pipe 33 is secured to the rear wall of the casing, directly below the header 15.

Fuel is gravity fed onto the grate 6, at each longitudinal edge thereof, from magazines 23% secured one to each side of the heater. These magazines 34 are formed from sheet metal and have oblique bottoms 35, which form outward extensions of the sections of the grate 6. Covers 36 for the magazines are lunged at 37 to the sides of the casing. The lnner edges of the bottoms 35 rest on outwardly projecting flanges 38,integrally formed with the base 1, and are rigidly seproducts of combustion and smoke retard the movement of the same through the heater, thereby increasing the efficiency of the heater. It will be noted that the uppermost horizontal row of extension tubes 18 is spaced considerably above the uppermost horizontal row of extension tubes 23 to afford a smoke passage, which permits a free movement of the smoke along the top of the heater to the smoke pipe 33.

By welding the joints of the tubes of the heater, it is possible to produce a heater at comparatively small cost and to assemble the tubes in close arrangement with respect to each other. It is also possible that the several sections of the heater may be very quickly and easily put together at the time the system is being installed. The casing for the improved heater 1s When the above described heater is used in connection with a steam plant, the terms used in connection with the above described hot water system will be changed to accord therewith.

What I claim is:

1. A tubular water heater including upper and lower headers, upper and lower manifolds, two series of upright tubes, the one series connecting said headers and the other series connecting said manifolds, said two series of upright tubes having reversely projecting lateral tube extensions, which overlap, the one series with the other and are staggered, both horizontally and vertically, and coupling pipes connecting the upper header with the upper manifold and the lower header with the lower manifold.

2. A tubular water heater including upper and lower headers, upper and lower manifolds, two series of upright tubes, the

one series connecting the headers and being.

welded thereto and the other series con necting the manifolds and being welded thereto, said two series of upright tubes having reversely projecting lateral tube extensions, which overlap, the one series with the other and are staggered, both horizontally and vertically, and separable coupling tubes, connecting the upper header with the upper manifold and the lower header with the lower manifold.

3. A. tubular water heater including upper and lower headers, upper tubes connecting said headers, an upright manifold and a lower manifold located on each side of the headers, upright tubes connecting the upper and lower manifolds on each side of the headers, the upright tubes of the headers having reversely projecting tube extensions, the upright tubes of the manifolds having inwardly projecting tube extensions which overlap the tube extensions of the upright tubes of the headers, said tube extensions being staggered both horizontal and vertical, and tubes connecting the upper header with the upper manifolds and the lower header with the lower manifolds.

-l. A tubular water heater including upper and lower headers, upright tubes connecting said headers and being welded thereto, an upper manifold and a lower manifold located on each side of the headers, upright tubes connecting the upper and lower manifolds, on each side of the headers,

and being welded thereto, the upright tubes of the headers having reversely projecting tube extensions welded thereto, the u n'ight tubes of the manifolds having inwardly projecting tube extensions Welded thereto and which overlap the tube extensions of the upright tubes of the headers, said tube extensions being staggered both horizontal and vertical, and coupling tubes connecting the upper header with the upper manifolds and the lower header with the lower manifolds.

In testimony whereof I aflix my signature in presence of two witnesses.

GEORGE E. SIMONDS. Witnesses:

CLARA DEMAREST, HARRY D. KILGoRn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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