US1822707A - Sectional boiler furnace - Google Patents

Description

Sept. 8, 1931. R. w. MENK 1,322,707 I i SECTIONAL BOILER FURNACE Filed Aug. 13, 1926 3 Sheets-Sheet l Sept. 8,1931. R. w. MENK. 1,822,707

SECTIONAL BOILER FURNACE Filed Aug. 13,1926 5 Sheets-Sheet 2 P 1931. R. w. MENK SECTIONAL BOILER FURNACE Filed Aug. 13 1926 S Sheets-Sheet 5 2520922 077 Ema/w W MEN/C Patented Sept. 8, 1931 UNITED STATES,

ATENT OFFICE RUDOLPH W. MENK, F J'OLIET, ILLINOIS SECTIONAL BOILER FURNACE Application filed August 13, 1926. Serial No. 128,994.

My present invention relates to furnaces of the boiler type and has more particular reference to a structure of this character that is separately'formed, in opposing sec- 6 tions so that the same may be shipped in 710 ed or otherwise secured together and the outfit is made in two semi-cylindrical sections so I that they may be assembled in opposition to each other to provide a complete cylindrical structure when completed. With my present invention I am enabled to provide a structure that in its knock-down form may be readily handled and may be passed through small openings in a building thereby avoiding the necessity of having to deliver andinstall the furnace while the walls of the building are under construction. Also the parts are so arranged for assembly that the respective sections may be spaced apart by means of an intermediate section for the purpose of enlarging the capacity of the furnace whenever desired. The arrangement and disposition of the parts are such that I secure a greater area of heating surface for the water, and by the employment of certain instrumentalities I have been able to create'a longer draft or path to be traversed by the products of combustion while at a high temperature. Among the divers objects of my invention are the provision of a structure of this character that embodies dependability in operation, economy in manufacture, compactness in construction, and novelty in the arrangement and disposition of the parts. I prefer to carry out my invention and to accomplish the divers objects thereof in substantially the manner hereinafter fully described and as more particularly pointed out in the claims, reference being made to the accompanying drawings that form a part hereof.

In the drawings:

Figure 1 is a central vertical section through the body of the furnace showing the arrangement and disposition of divers parts thereof.

Figure 2 is a vertical side elevation of the complete furnace installed.

Figure 3 is a vertical elevation, of the rear semi-cylindrical section, looking at the same 1 from the hollow side thereof.

Figure 4 is a view similar to Figure 3 illustrating the front semi-cylindrical section.

Figure 5 is a horizontal transverse section taken on line 55 of Figure 2 and looking in the direction of the arrows.

Figure 6 is a fragmentary transverse section on about the plane of Figure 5 showing the manner of increasing the dimensions of the furnace by means of an intermediate section.

Figure 7 is a vertical fragmentary section taken on line 7-7 of the structure illustrated in Figure 6. i

As will be seen, the furnace is formed from two cylindrical hollow sections A and B; The former section A is the front section in which is provided the usual openings for the fuel, for the clean-out and for access to the grate bars and the other section B is the rear section which is provided with an outlet 10 for the discharge of the products of combustion to the chimney flue. The semi-cylindrical sections A and B are provided, adjacent their edges, with lateral ears or lugs 11 arranged in planes opposite each other and adjacent the upper and lower portions of the respective sections, which lugs are provided with apertures through which clamping bolts 12 are passed, so as to draw the sections tightly together. These sections are preferably formed of sheet metal plates, the vertical walls 13 and 14 being disposed parallel or concentric to each other to provide outer and inner spaced walls between which there is a chamber 15 for the circula tion of water. The lower edges of these plates are connected by annular bottom rings 16 so as to close the lower portions of the water-chambers 15 and said sections are mounted upon and supported above the floor upon the usual base that provides an ash box 17 (Figure 2). At their upper end portions the double walls are continued over laterally in a horizontal direction to provide the upper and lower spaced Walls 18 and 19 to provide shallow recesses for'the reception of a suitable furnace cement 21 that is placed therein while in a plastic eonditlon and compressed and spread by the clamping action of the bolts 12' when the respective sections A and B are drawn together. Similarvertical separator walls or end plates 22 spaced back of the vertical edges of the'semi- cylindrical walls 13 and 14 provide similar recesses along the vertical portions of the sections A and B for i the reception of the cement 23, so that the joint between the respective sections isv rendered air-tight and gas-tight after assembly in the manner above described. The sections A and B, on account of their small transverse dimensions may be readily inserted through a small'cellar window or carried separately through a narrow cellar door of a buildingwhere it is desiredtoinstall the'furnace, without the inconvenience of having to knock outportions of the wall of the building as is so often the case with furnaces made of an integral cylindrical shape. The sections A and B including their domes do not communicate with each other, as will be obvious from the foregoing description, because of the walls or end plates of'the domes and the walls or end plates 22 of the cylindrical portions of the sections, but in order to obtain a distribution of the steam or hot water from the sections, the domes are provided with outlets 24 into which suitable pipe connections 25 are screwed that lead to a union or T-coupling .26 so that the steam or hot' water arising from the cylindrical portions into the domes will pass out through the above described connections and be distributed from the T- coupling to leads and. radiators in the heating system.

The front section A is provided with a water-chamber X that projects inwardly from the inner wall 14 of this section in a plane above the fuel opening and said chamber X is formed by a horizontally disposed plate 27 that extends across the entire section and projects inwardly to a point inside the plane of the edges of the cylindrical wall of the front section where said plate is f-nosed or-curved outwardly and upwardly as at 28 and continues as an upwardly inclined wall 29 tothe inner wall 14 of the I This chamber is so constructed and positioned that the products of combustion arising from the fuel upon the grates will stri'keLthe bottom wall 27 and be deflected away from the front cylindrical wall 14 toward the rounded edge or nose 28 and then pass upwardly against the walls 10 of the semi-circular d-om'es'and out through the outlet 10 of the section B.

Therear section B of the structure is provided with a water-chamber Y, the walls of which are disposed in reversed relation to those of the chamber X and comprise a horizontal top plate or wall 30 that projectsfrom the inner wall 14 of the section B toward the edgesjof the cylindrical section where the,

plate formingsaid wall is nosed or rounded outwardly and downwardly as at 31 and continues in a downwardly inclined direction to provide the oblique bottom wall 32 which'terminates at and is secured to the inner wall 14 of the section B. As seen, the chamber Y is also of triangular shape in cross section, the base of the triangle in this instance being uppermost andthe hypotenuse provides the lower wall of the chamber, the said structure being thereby a reversal of the arrangement of the chamber of the front section A. It will also be seen that the inclined or oblique walls 29 and 32 of the chambers are substantially parallel to each other as are also the hori- Zontal walls 27 and 30, and the so-called nose portions 28 and 31 are separated from each other and disposed one above the other so as to provide an elongated passageway 33 of restricted dimensions through which the products of combustion must pass and beyond the passageway they enter the upper portion Z of the furnace which, as will be seen, is of greater dimensions and capacity than the passageway so that they linger in ignited condition prior to leaving the structure. In order to assist'combustion in this upper portion Z the door of the upper opening may be opened for the admission of air thereto. The inclined 'wall 32 of the chamber Y deflects the products of combustion upwardly and forwardly toward the other chamber X so that the path of the products of combustion is circuitous and these hot gases are brought into intimate contact with a considerable area of heating surface in the furnace. The inclined walls 29 and 30 will, of course, shed 01f dust, soot and foreign matter due to their slope and the horizontal wall 30 of the chamber Y may be readily cleaned 3 the chimney, which pipe is provided with a of thesoot, etc, bymeans of ascraper or'other device inserted through the upper opening a: above the upper edge of the inclined wall 29.

In orderto baflie, or retard the flow of the products of combustion andv to divide the same in the combustion chamber to cause the hot gases to engage theside walls in the upper portion of the structure, I have provided one or more tubes 34, (preferably two), that are positioned vertically upon the inner edge portion of the top horizontal wall 30 of the upper chamber, in front of the outlet and which extend upwardly to the inner lower wall 19 of the dome of the rear section B. These tubes are water-contained and establish connection between the chamber Y and the dome above the same, and the space between the tubes may be closed by placing therein suitable fire brick 35 so that said brick and tubes provide a baiile in front of the discharge outlet and prevent a direct flow of the gases to the outlet.

The return water from the radiators and lead pipes is fed back into the lower portions of the sections A and B by means of a union or T-coupling 36 upon each side of the furnace at about the location of the joint between the respective front and rear sections A and B (Figures 2 and 5), and from these conplings the water passes into the cylindrical water-chambers through inlet stubs 37 on p the respective sections.

From the outlet 10 the products of co1nbustion pass into the fine or pipe 88 leading to vertically disposed offset portion 39 that is divided longitudinally in a vertical direction by a partition 40 that extends down below the plane of the lower edge of the outlet 10 and provides a down passageway 41 and an up passageway 42 upon opposite sides thereof. The construction just described is controlled by means of a butterfly damper 43 that may be adjusted to permit the products of combustion to flow either straight into the chimney flue or downwardly through the passages 41 and 42 which latter will somewhat retard its flow and thereby retain the heated products within the confines of the furnace for a longer period than when the draft or flow is direct to the chimney.

In Figures 6 and 7 there is illustrated the manner of increasing the capacity of the boiler furnace by interposing an intermediate section C between the facing or abutting edges of the semi-cylindrical sections and domes. When it is desired to employ the interinediatesection C, the clamping bolts 12 are released and the abutting edges of the sections A and B separated a distance sufficient to permit the insertion of the intermediate section, after which longer bolts are inserted in the lugs 11 and the structure firmly and tightly drawn together. The intermediate section C comprises spaced parallel vertical walls 13 and 14 that'provide continuations of the respective inner and outer walls of the semi-cylindrical sections A and B and the edges of these vertical walls are connected by the closure walls 2O so as to provide a shallow recess oneach side of the intermediate section facing the recesses or depressions in the edges of the sections A and B and aflord a space in which the cement 23 may be placed in order to provide air-tight and gas-tight joints where the sections are clamped together. The inner and outer walls 13 and 14 and the closure walls provide a water-chamber 15 that leads up to a horizontal dome element corresponding in section with the dome ele ment of the sections A and B. The side members or legs of the intermediate section 0 are connected intermediate their ends by a horizontal tubular member Z that is formed concave on oneof its faces as at lfl, so as to fit against the nose portion 28 of the water-chamber X projecting from the front section A of the furnace and the lower wall of this tubular Inember'Z is in the horizontal plane of the bottom wall 27 ofsaid chamber X. The concave portion 44 of the tubular member projects beyond the vertical plane of the upright legs of the intermediate member, as seen in Figures '6 and 7 and the portion of the tubular member opposite thereto is set back from the plane of the opposite edges of the legs so as to not close the passageway 33-between the water-chambers X. and Y. The intermediate section C is not in communication with the waterchambers and semi-cylindrical portions of the sections A and B and it will be understood that the hot water or steam will be discharged from the dome of the intermediate section through an outlet stub corresponding with stubs and leading to the coupling '26 which is changed from a T to a cross.

it will also be understood that the return water is fed back into the intermediate section through the couplings 36 which are likewise changed froin .Ts to crosses. If it is desired to further enlarge the furnace or increase its capacity, other intermediate sec tions may be utilized alongside ofthe section C, and when more than one of these intermediate sections are employed, the dimensions of the elongated passageway 33niay be modified and controlled by omitting the horizontal tubular member Z of the intermediate section that is nearest the waterchamber Y; or, in lieu of omitting this member, the same may be reduced in transverse dimensions.

It will'be obvious to others skilled in the art to which this invention pertains that div-- ers modifications or refinements of the structure illustrated may be made without departing from the principles involved, and I therefore desire it understood that all such changes are fully contemplated as coming within the scope of the appended claims.

lVha-t I claim is e 1. A boiler furnace comprising a base, a plurality of hollow-wall sections secured together and mounted thereon to provide a firepot in their lower portions and having an outlet for the products of combustion, overhanging hollow domes abutting each other the upper ends of said sections, irregularshaped water chambers projecting inwardly from the respective sections and overhanging the fire-pot, one of which is below said outlet, one of said chambers having a substantially horizontal base wall and the other chamber having an inclined base wall, and tubes disposed in front of said outlet and communicating at opposite ends with the interior of the adjacent water chamber and overhanging dome above the same.

2. A; boiler furnace comprising oppositely disposed semi-cylindrical sections having hollow walls, one of said sections provided with an outlet for the products of combustic-n, overhanging semi-circular domes having hollow walls forming continuations of the walls of the respective sections, waterchambers extended inwardly towards each other from the inner walls of said sections, the inner portions of said chambers being adacent each other, one of said chambers having a wall inclined upwardly from its inner and the other chamber having a wall inclined downwardly from its inner edge, and a tube connecting the dome and water cnamher of the section provided with the outlet and disposed in the path of the products of combustion passing to: said outlet.

A boiler furnace comprising oppositely disposed semi-cylindrical sections having hollow walls, one of said sections provided with an outlet for the products of combustion, overhanging semi-circular domes having hollow walls forming continuations of Lil the walls of the respective sections, waterchambers' extended inwardly towards each other from the inner wallsof said sections, the inner portions of said chambers being adjacent each other, one of said chambers having a wall inclined upwardly from its inner edge and the other chamberhavin-g a wall inclined downwardly from its inner edge, two spaced tubes connecting the dome and water-chamber of the section having the out- Nt, and a bafiie wall. extending between said tubes and disposed in the path of the products of combustion passing to said outlet.

i. A boiler-furnace comprising a base, a plurality of opposing hollow-Wall sections secured together and mounted on said base to provide a fire-pot, a chimney fiue leading from the upper portion of one of said sections, irregular shaped water chambers overhanging the fire-pot from the sections, the inner portions of the base Walls of said chamhere being contiguous each other whereby to provide a restricted. passageway between their inner edges, the- Walil's to the water RUDOLPH MENK.

its

ice

Images