US2314581A - Sectional boiler - Google Patents

Description

March 23, 1943. v. GERICH SECTIONAL BOILER Filed Aug. 20,

1940 3 Sheets-Sheet 1 Q INVENTOR.

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$N .WN N NE QNN MN MN v. GERICH 2,314,581

SECTIONAL BOILER Filed Aug. 20, 1940 3 Sheets-Sheet 3 March 23, 1943.

' INVENTOR.

4 27. oa'MLf/IU/VEFER/C'H 21;? A n A HTTORNEY Patented Mar. 23, 1943 UNITED STATES FATENT OFFICE SECTIONAL BOILER Valentine Gerich, New York, N. Y.

Application August 20, 1940, Serial No. 353,323 3 Claims. ((21. 122-4225) This invention relates to an improvement in sectional cast iron low-pressure steam boilers and hot water heaters.

A salient feature of this invention, is the instant installation of any number of intermediate sections that may be secured by stay-rods to the front header and rear sections, to suit the required horsepower-and space available, either in the single, duplex or multiple type of steam or hot water boilers.

Another salient feature of this invention, is the design of a tubular shell boiler, having five levels of large and small fire flue passages arranged in a very compact manner, each level of fire flues being connected in the front header and rear sections by means of by-passages set at about 45 degrees, whereby the heat is concen'trated for greater heating efficiency in the larger fire flues of the intermediate sections.

Another salient feature of this invention, is the caulking seams that provide sealing means between all of the sections, and'the fire-flue passages. The space between each section is only one-eighth of an inch, into which soot will eventually seal and close up and thus solidifying the entire assembled sections, and together with vertical and horizontal caulking seams in between each of the fire-flue passages, provide greater fire and heating efficiency.

These diagonal by-passages are side feeders from small fire-flues to the central vertical formation of larger fire-fines leading from the firebox or fire-pot to the smoke stack at rear end section, the smaller fire-fiues being staggered in between the circular wall portions of the larger fire-fiues so as to make more compact the complete fire and heating efi'iciency of the each boiler unit, either single, duplex or in the multiple type.

Another salient feature of this invention, is the interchangeable and convertible means provided in the fire-boxes for burning either coal, pulverized coal, fuel oil or gas.

Another salient feature of this invention, is the adaptability of providing the interconnecting sections with their fire-flues and by-passages for a duplex or multiple type boiler of greater horsepower for factory. and large buildings, or for only a single fire-box boiler of a small horsepower for individual homes and small buildings.

Other features of the invention will appear as the description proceeds in the following specification, accompanied by the annexed drawings, in which Figure 1 is a front elevation of the sectional duplex boiler of this invention, on about a scale of 2;" to the foot, thus providing a duplex boiler 5 feet wide by 6 feet 6 inches high.

Figure 2 is a side elevation of the same secs tional boiler.

Figure 3 is a face view of the front header section showing the fire-fiues in their zig-zag connections on line 3-3 of Figures 2 and 7.

Figure 4 is a cross-sectional of one of the intermediate sections, with the water omitted, taken on line 4-4 of Figure 5.

Figure 5 is a sectional View on line 5-5 of Figure 4 with the water, caulking liners and radius stay-rods omitted.

Figure 6 is an enlarged detail sectional view of one of the interconnecting sleeves in between each individual section.

Figure 7 is an enlarged longitudinal section following each zig-gaz fire-flue on each of the five levels, taken on the zig-zag line 1-1 of Figure 3.

Figure 8 is a fragmentary view of the front fire-box showing the use of an oil burner in place of coal.

Figure 9 is a front elevational view of the small single fire-box boiler. Figure 10 shows a detail of a double threaded bolt which may be optionally placed at fiat open surfaces during the moulding and casting of each section which when cooled secures bolt in a fixed position therein.

Figure 11 is a much preferred modified form of coupling each section together in place of the sleeve tubes II and l2. 7

Referring to the drawings, the numerals l and 2 indicates the front header sections and 3 and 4 the rear header or end sections of the boiler, having intermediate sections 5, 6, 1, 8, 9 and Hi interconnecting therebetween by means of water and steam circulating sleeve members H and [2, respectively, which are firmly wedged into and secured into openings of each of the connected sections by means of threaded ends of radius stay-rods l3 and locking nuts 14, which also firmly secure the asbestor-like liners [5 into their round ca-lking seams l6 and ll, shown clearly in the enlargedsectional view of Figure 7.

All of the sections I to 10 are closely positioned so the space in between the sections at the cauiking seams i6 and H is filled up with soot, adjacent the asbestor-like liners l5 thereby providing smooth-like fiues in the large fire-'- boxes 20 .and 21, the larger fire-fines 2|, 22, 2B and 29 and the smaller Icy-passages and fireinFigure 3. surrounding each fire-flue is shown clearly in fiues 23, 24, 25, 26, 39, 3|, 32 and 33, all of which lead to the rear stack flue 34.

The fire boxes 20 and 21 are tubular in shape and are provided with grates G for coal burning, the grates being operated by a rod R and lever L, all of which is well known. The fire boxes are provided with an upper and lower doors 35 and 36, semi-circular in shape, as shown clearly in Figure 1, and have latches 31, hinges 38, bolts 39, sight holes 40, draft control 42, and a grater shaker GS on the fixed portion 43 having the latch locking arrangement 44.

Large and small doors 50 and are provided for each of the larger and smaller fireflues, these doors having similar parts as those described on doors 35 and 36 and are primed accordingly. Water gauge 54, blow-01f cocks 55, clean out plugs 56, brass wash out and clean out plugs 58 and 59 for the water space and the steam sleeves II and I2, all of which are provided similar to all boilers.

The front section I has door openings in direct alignment with each of the fire-fines, aid the rear section 3 has the stack opening 66 and rear clean out opening BI and door 62 to clean out the combusting chamber CC 20 and 21. The adjacent interconnectable sections I, 2, 3 and 4 are provided with the connecting by-passages as indicated by the arrows A in Figure 7, and

the shaded passages P in Figure 3.

It is to be noted that the longitudinal walled .water spaces of each section in between each of the fire-flues, as shown in Figure 7, is for the purpose of illustrating the continuous fire-heat wave passages as taken on the zig-zag line 1-1 The exact water space, however,

Figures 3, 4 and 5. The fire-flues have been arranged so that a more efficient boiler per horsepower for a low pressure is provided in the least head room space permissible for the installation of either the larger duplex or smaller singular type of sectional boilers.

The fire-box of each tubular passage 20 and 21, either in the single or duplex form, is provided with a rear fire wall 82, thus providing the separation of the combustion chamber CC from the ash pit of the front fire-box when used for coal.

It may be retained for the oil and gas blowers and pulverize coal burners, if so desired.

Each section is provided with positioning lugs or projections adapted for the installation work onto the floor base B comprising a rigid frame of cross and longitudinal members 14 and I5. The members I5 have a recessed portion 16 through which a suitable bar may be inserted underneath each section in order to pry same into proper position for each section to be drawn securely together with the interconnecting water and steam sleeve-tubes II and I2 by the radius stay-rods I3 and nuts I4. After the asbestos-like liners I5 are inserted in the caulking seams I6 and I'l,-the liners I5 are inserted on each side of "the vertical seam I'I. At the rear section a conis inserted for burning oil into the fire-box. Thi

applies also to installing pulverized coal burners, but for a gas burner the grates G remain in the normal position as shown in Figure 7 for buming coal.

Boilers of more or less capacity, will vary in size, and therefore, the front and rear end sections with the intermediate sections will have corresponding smaller or larger fire-flues and interconnecting sleeves accordingly.

In Figure 9 a singular type of a sectional boiler is shown, where only one fire-box and fire-fines are provided. This singular type is similar to the duplex type boiler hereinbefore described, and similar parts will be primed accordingly. This 7 singular type boiler is adaptable for a small size plant for hot water and steam heating, in which the thermostat I00 or the steam gauge IIiI is provided, respectively.

In Figure 11, a much preferred modification of the sections I to I0, inclusive, is shown whereby the interlocking sleeve members II and I2 are eliminated, and in place thereof, female and male connections are provided integrally in the face portions of the casting of each section, such as for example, by bosses I65 that fits into the countersunk openings I66 when the sections are drawn together by the radius stay-rods I3 and lock nuts I4.

Headers IIO are for the steam chambers SC, in which the water line is about 4 inches above the uppermost fire- flues 22 and 29.

For circulating hot-water, there is no water line, and the headers for the hot-water supply line may be suitably placed as usually done.

Doors 36 and 35 are for the stoking of coal and ash removal, respectively, and a clean-out door H5 and draft-check II6 are provided at the rear section on the underside of the smoke stack III, as noted in Figure 2.

It is to be understood that any part of this invention as hereinbefore described and shown in the drawings, may be altered to improve the efiiciency of the boilers, providing same comes within the spirit of this invention and the appended claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is as follows:

1. In a sectional steam boiler or hot-water heater of the character described, the combinatoin of front and rear sections having interconnecting sections therebetween, each of said sections provided with water and steam sleeve-tube members providing circulating means between each of said sections, said sections being provided with openings forming double fire-boxes and combustion chambers and longitudinally small size and large size fire flues spaced vertically above the fire-boxes and combustion chambers, and by-passages connecting some of the small size fire-fiues with the fire-boxes and combustion chambers and other by-passages connecting the small size fire-fiues with the large size fire-flues all of which form a passage leading to the smoke stack in the rear section, the lower part of the rear section being provided with a clean-out hole and door that permits access to the passage, the front header section being provided with cleanout openings and doors for each of said fire-flues, each of said fire-boxes being provided with a pair of semi-circular doors in the front header section, one of which is for a fuel feeder and the other of which is for an ash pit, the sections being provided with caulking seams, asbestoslike liners inserted in between said seams, suitably spaced radius stay-rods extending through the sections, said sections and interconnecting sleeve-tube members being adaptable to be drawn together by said radius stay-rods, whereby all of said fire-boxes, fire-fines and their by-passages are rigidly secured in alignment with each other and said asbestos-like liners secured in between said caulking seams, thus sealing each of said fire-fiues.

In a sectional steam boiler or hot-water heater of the character described, the combination of front and rear sections having interconnecting sections therebetween, each of said sections provided with water and steam connections providing circulating means between each of said sections, said sections being provided with tubular openings forming double fire-boxes and combustion chambers and longitudinally extending small size and large size fire-flues spaced vertically above the fire-boxes and combustion chambers, and by-passages connecting some of the small size fire-flues with the fire-boxes and combustion chambers and other by-passages connecting the small size fire-flues with the large size fire-flues all of which form a passage leading to the smoke stack in the rear section, the lower part of the rear section being provided with a clean-out hole and door that permits access to the passage, the front header section being provided with clean-out openings and doors for each of said fire-flues, each of said fire-boxes being provided with a pair of doors in the front header section, one of which is for a fuel feeder and the other of which is for access to the ash pit, all of said sections being provided with caulking seams, asbestos-like liners inserted in between said seams, suitably spaced radius stay-rods extending through all of said sections, said sections and water and steam connections being adaptable to be drawn together by said radius stay-rods, whereby all of said fire-boxes, fire-fines and their by-passages are rigidly secured in alignment with each other and said asbestos-like liners secured in between said caulking seams thus sealing each of said fire-flues.

3. In a sectional steam boiler or hot-water heater of the character described, the combination of front and rear sections having interconnecting sections therebetween, each of said sections rovided with water and steam connections providing circulating means between each of said sections, said interconnecting sections being provided with tubular openings forming a fire-box and combustion chamber and longitudinally extending small size and large size fire-fines spaced vertically above the fire-box and combustion chamber, and by-passages connecting some of the small size fire-flues with the fire-boxes and combustion chambers and other by-passages connecting some of the small size fire-fines with the large size fire-fines all of which form a passage leading to the smoke stack in the rear section, the lower part of the rear section being provided with a clean-out hole and door that permits access to the passage, the front header section being provided with clean-out openings and doors for each of said fire-fines, said fire-box being provided with a pair of doors in the front header section, one of which is for feeding the fuel therein and the other for the removal of the ashes from the pit therein, all of said sections being provided with caulking seams, asbestos-like liners inserted in between said seams, suitably spaced radius stay-rods extending through said sections, said sections and connections for water and steam circulating means being adaptable to be drawn together by said radius stay-rods, whereby all of said openings forming the fire-box, combuszion chamber, fire-flues and their by-passages are rigidly secured in alignment with each other and said asbestos-like liners secured in between said caulking seams thus sealing each of said fire-fines.

VALENTINE GERICH.

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