US2429904A - Domestic water tube boiler - Google Patents

Description

Oct. 28, 1947. I c, WEBB 7 2,429,904

DOMESTIC WATER TUBE BOILER Filed Dec. 26, 1944 4 4 Sheets-Sheet 1- 4 Oct. 28, 1947." v E. c. WEBB 2,429,904

' DOMESTIC WATER TUBE BOILEfi Filed Dec. 26, 1944 T 4 Sheets-Sheet 2 to waw '//\/z/E/\ TUR E. c. WEBB DOMESTIC WATER TUBE BOILER- Filed Dec. 26, 1944 4 Sheets-Sheet 3 v UVMENTUR E-:. C. WEBB 0a. 28, 1947. I V E. c. WEBB 2,429 904 DOMESTIC WATER TUBE BOILER Filed Dec. 25. 1944 4 Sheets-Sheet 4 24 TTUFi/VEW I ?atented Oct. 28, 1947 DOMESTIC WATER TUBE BOILER Ernest C. Webb, Bay Village, Ohio, assignor to Iron Fireman Manufacturing Company, Portland, Oreg.

Application December 26, 1944, Serial No. 569,814

4 Claims. 1

This invention relates generally to heating plants and particularly to a domestic water tube boiler.

The main object of this invention is to construct a boiler in which the arrangement of the heating. surface inv the combustion chamber and particularly the arrangement of the tubes in the secondary heating surface. will produce new and useful results.

The second object is to produce a boiler of the class described, havin a large amount of radiation and in which the tubes are so arranged and formed as to produce a tremendous passageway for the gases, wherein alarge portion of the heat may be extracted therefrom and wherein certain portions of the tubes unite to form a bridge wall while other portions form heat conductors which are constantly scoured by the rapidly passing gases.

The third object is to produce a boiler of the class described, in which the fly ash will be encouraged to settle in a definite location from which it is easily removed.

The fourth object is to construct a boiler of the class described which will be small in weight and size with relation to its rating, and which will present no unusual manufacturing difficulties.

The fifth object is to construct a boiler of the class described in which the various sections may be fabricated and later joined into a complete assembly,

I accomplish these and other objects in a manner set forth in the following specification as 11- lustrated in the accompanying drawing, in which Fig. l is an external view of the boiler.

Fig. 2 is afront elevation of the boiler with the setting broken away in vertical section.

Fig. 3 is a rear elevation of the boiler with the setting broken away in vertical section.

Fig. 4 is a horizontal section taken along the line fi4 in Fig. 3.

Fig. 5 is a horizontal section taken along the line 55 in Fig. 3,

Fig. 6 is a fragmentary vertical section taken along the line 66 in Fig. 4. I

Fig. 7 is a perspective view of the brid e wall section.

Similar numerals refer to similar parts throughout the several views.

Referring in detail to the drawing, there is shown a pair of lateral lowermost manifold members II] disposed along the sides of the boiler within the brick walls I I, whose lowermost portions I2 are thickened to support the manifolds ID. The

manifolds I!) are joined by flanged connections I3 to the lowermost rear manifolds I4, Above and somewhat to the rear of the manifold I4 is the uppermost rear manifold I5. The uppermost manifold I5 is joined by the flanged connection I6 to the cylindrical shell H, which constitutes the main storage reservoir.

Between the manifold members It] and. the shell H are the vertical tubes I8, whose upper portions I9 are preferably turned in a radial direction with relation to the shell IT, The tubes l8 are placed as close together as is practical and are separated from the walls II by means of a refractory 20, which also covers the top of the shell H, as does the rounded. brick work 2 I.

Surrounding the fire door opening. 22 are the foremost tubes 23 which extend between the manifolds H1 and the opposite side of the shell IT by being formed substantially as shown, whereby the heat is absorbed from the boiler front, and yet the fire door opening 22 is not blocked.

Referring particularly to Figs. 6 andl, it will be seen. that there are three definite groups of connecting tubes 23 between the manifolds I4 and [5, The central group of tubes 24 are substantially vertical except that the lower ends 25 are curved slightly forward to point of entrance into the manifold I4. Also connecting the manifolds I4 and I5 are the foremost tubes 26 and.

intermediate tubes 21, whose lowermost portions along an intermediate portion and then extend vertically in the plane of the central tubes 24, the portions 25 of the tube 21 being spaced somewhat greater than the diameter of the tubes.

The rearmost tubes 29 are curved as illustrated, to assist in forming the tortuous passageway 30, which increases the length of gas travel and encourages the deposit of the fly ash in the trough 3| formed above the manifold l4 between the central tubes 24 and the foremost tubes 26 and intermediate tubes 21, Within the trough 3! is disposed an ash removing worm 32, through which fly ash can be taken out through the side of the boiler or back into the combustion chamher as desired. The position of the stack connection 33 and its supporting brick work 34 is also indicated. No means for supplying heat to the boiler is indicated, as it forms no part of the present invention.

It is desirable in most cases to provide a sec- 0nd row of pipes 35 just inside of the pipes I8 in order to pick up the intense radiant heat and deliver same to the Water.

While I have thus illustrated and described my invention, it is not my desire to be limited to the precise form shown herein, and I intend to cover such forms and modifications of the invention as fall fairly within the appended claims.

I claim:

1. A boiler of the class described, characterized by having enlarged heat collecting manifolds disposed along the sides and at the bottom of the combustion space and having a transverse manifold connecting said first mentioned manifolds and an upper manifold disposed above said transverse manifold, a boiler shell adjacent to said up per manifold and connected thereto, circulating pipes disposed along the sides of the fire box connecting the lateral manifolds with the boiler shell, said circulating pipes being in close relationship to each other, an inner row of circulating pipes more widely spaced than are the first mentioned circulating pipes and inclined inwardly at their upper ends toward the central portion of the boiler shell, and four sets of tubes connecting said upper and lower manifolds, the first set being vertical, the second set being forwardly curved, the third set being disposed in front of the first set and rearwardly curved and joined at the ends to their respective manifolds, and the fourth set occupying space between the upper portion of the first set and the lower portion of the third set, the intermediate portion of said fourth set constituting a heat absorbing grid through which the product of combustion must pass downwardly, the space between the second and third sets of tubes constituting a fl ash collection trough and an ash removing worm disposed in the lower portion of said trough.

2. A boiler of the class described characterized by having a bridge wall formed of an upper and lower horizontal manifold and four sets of con necting tubing consisting of substantially straight vertical central tubes, a plurality of vertical foremost tubes disposed in front of said central tubes, intermediate tubes between the lower ends of said foremost tubes and the upper ends of said central tubes and rearmost tubes curving backwardly and connected to the upper and lower manifolds whereby gases fiOWing through said tubes must pass over the closely spaced lower portions of the foremost and intermediate tubes and under the closely spaced upper portions of the central tubes and intermediate tubes.

3. A boiler of the class described having an elevated shell and having a continuous manifold disposed under the sides and rear end of said shell, the side portions of the said manifold having a plurality of closely arranged pipes communicating with said shell, an upper manifold adjacent to the lower end of said shell and substantially above a portion of said lower manifold, a plurality of spaced vertical tubes connecting said upper and lower manifolds and a plurality of forwardly bent manifold connecting tubes whose upper and lower ends are disposed between the planes of said vertical tubes, and means for shielding the front of the boiler against heat, consisting of pipes extending from said first mentioned tubular members across the front of the furnace and around the fire door portion thereof.

4. In a boiler of the class described, a combination of a pair of super-imposed horizontal manifolds mounted in the rear of a boiler combustion space, a plurality of spaced vertical tubes connecting said manifolds, a plurality of rearwardly curved tubes connecting said manifolds, occupying planes between said Vertical tubes, a second set of vertical tubes disposed in front of said first mentioned vertical tubes having their ends turned backwards radially into said manifolds, and a plurality of intermediate tubes connecting said manifolds, portions of which intermediate tubes are inclined, while the upper ends of which are between and in alignment with said first mentioned tubes, and the lowermost ends of which are between and in alignment with the lower portions of the second set of vertical tubes, whereby gases flowing from the combustion chamber of the furnace are forced to rise over the inclined portions of said intermediate tubes.

ERNEST C. WEBB.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,360,260 Nagel Oct. 10, 1944 1,836,119 Huster Dec. 15, 1931 1,851,842 Huster Mar. 29, 1932

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