US2897793A - Boiler with central heating unit - Google Patents

Description

Aug. 4, 1959 P. ZARZECZNY BOILER WITH CENTRAL HEATING UNIT 5 Sheets-Sheet 1 Filed Sept. 10, 1957 Paul Zarzeczny INVENTOR.

Aug. 4, 1959 P. ZARZECZNY BOILER WITH CENTRAL HEATING UNIT 3 Sheets-Sheet; 2

Filed Sept. 10, 1957 4 1 4M I lllllllllllllllllll I I4 a J Pa uZ Z drze czny INVENTOR.

BY 11 vmu,

ATTORNEY Aug. 4, 1959 P. ZARZECZNY 2,897,793

BOILER WITH CENTRAL HEATING UNIT Filed Sept. 10, 1957 3 Sheets-Sheet 3 United States Patent BOILER WITH CENTRAL HEATING UNIT Paul Zarzeczny, Trenton, NJ. Application September 10, 1957, Serial No. 683,124

2 Claims. (Cl. 122-165) This invention relates to domestic water boilers and heaters, and the principal object of the present invention is to provide a boiler or heater of such construction and arrangement as to obtain the maximum heating effect of the fire from the fuel used irrespective of whether it may be coal, oil, gas or other type of fuel.

In previous domestic boilers of which I am aware much of the heating potential of the fire is lost for the reason that all the water containing walls are located so far from the source of the fire as not to receive the maximum direct effect of the flames.

Therefore, one of the more specific objects of my invention is to provide a boiler having a central heating unit connected with the water containing Walls, the unit being formed and arranged in proximity to the fire in such a manner that the water circulating through the central heating unit will receive the maximum direct heating effect of the flames, thereby providing 50 to 75 percent more B.t.u. per one pound of coal than any boiler m use at the present time, and a corresponding increase in efiiciency when oil, gas, wood or other fuel is used. ThlS construction also provides heat much faster than in conventional boilers.

'Another object of the present invention is to provide such a boiler formed in a plurality of vertical sections with the central heating unit cast or otherwise formed in 'water circulating communicating relation with the middle section and provided with means for sealing adjacent edges of the sections in water circulating relation with one another. t

A further object of the invention is to provide a coal fired boiler with a central heating unit of the character mentioned having a flat water container having therein a central vertical opening through which lump coal is fed and having an upwardly tapered lower container spaced a substantial distance below the first mentioned container the tapered form'of the lower container being adapted to distribute coal to all portions of a grate located below and in direct contact with the central heating unit as a whole.

A still further object'of this invention is to provide a simple and efficient means in conjunction with a coalfired boiler for automatically removing ashes from the grate and at the same time conserving any unburned lumps of coal shaken through the grate.

Other objects and advantages of my improved boiler will be apparent or pointed out in the following specification in *which reference is had to the accompanying drawings showing one embodiment of my invention, and 1n which:

Fig. 1 is a perspective view of a coal fired boiler in ac cordance with my invention; I

Fig. 2 is a fragmentary perspective view of the middle boiler section;

Fig. 3 is a corresponding perspective view of one of the end boiler sections;

Fig. 4 is a perspective view of the interior parts of the boiler shown in Fig. 1, the outer portion of the boiler being outlined in broken lines;

' Fig. 5 is a detail section showing the manner of sealing adjacent boiler sections together in water circulating relation;

Fig. 6 is a section, looking from the front, taken on the line 6-6 of Fig. 1;

Fig. 7 is a section looking from the left side of the boiler and taken on the line 7--7 of Fig. 6;

Fig. 8 is a section in top plan and taken on the line 8-8 of Fig. 7; and

Fig. 9 is a detail section showing the manner of assembling the boiler sections illustrated in Figs. 2 and 3.

Referring to the drawings in which like numerals designate like parts or portions in the several views, the water containing portion of the boiler, in the embodiment of the invention illustrated, consists of a rectangular casing 10 closed at its sides and top and open at its bottom, the casing having double side and top walls forming a closed water containing and circulating jacket. The casing, in the embodiment illustrated, is formed from two hollow end sections 12 having inwardly projecting side portions 14 and an inverted U-shaped middle section 16 adapted to be inserted between the two end sections, the double walls of the sections being of uniform spacing so that when assembled together in edge to edge relation the outer and inner wall surfaces of the sections will be in alignment, as clearly shown in Fig. 8. The outer edges of the sections 12 and 16 are surrounded by opposed grooves 18 and interfitting tongues 20, shown in enlarged detail in Fig. 9. The sections 12 and '16 are connected in water circulating relation through tapered bushings 22 inserted in tapered openings 24 in the section walls, shown in enlargeddetail in Fig. 5. The sections are tightly clamped together by means of bolts 26 on thesides mounted in lugs 28 on the outer sections and by bolts 30 on the top mounted in lugs 32'on the outer sections. When the three sections are firmly clamped togetherthe tongues 20 will be sealed in .the grooves 18 withplastic .fire clay 34, (Fig. '9) or other suitable filler, as shown in Fig. 9. At the same time the tapered bushings 22 will be forced into sealing'engagement with-the boiler sections in the tapered openings 24, as shownin Fig. 5, leaving the adjacent edges of the sections slightly spacedapart to ensure the making of a water-tight connection between the adjacent walls of the boiler sections.

Hot water outlet pipes 36 (Fig. l) are connected into the water jacket of the front end boiler section and cold water inlet pipes 40 are connected into the water jacket of the middle section. Bosses 42 are provided on the top walls of the boiler sections through which tappings may be made for connection into the water jacket or various pressure control valves or other fixtures. 1

The upper interior construction of the boiler illustrated is of generally conventional design including a central, fiat water container 44 'in circulating communication with the water jacket of the middle boiler sectionx16;

However-the lower interior construction differs radically from that of conventional boilers in the provision of a central heating unit, designated as a whole in Fig. 4 by the numeral 46, which is designed to utilize the heating effect of the fuel burned in the boiler more completely than has been possible in water boilers of previous designs. This central heating unit includes a central, flat water container 48 located a substantial distance below the conventional container 44 and of a lesser area. The container 48 is provided with a pair of integral, narrow and laterally projecting hollow wing portions 50 which are cast with or otherwise connected to the middle section 16 in communication with the water jacket in that section. The wing portions 50 are of substantial length, extending downwardly to a plane only a short distance above the lower ends of the boiler sections, as more clearly shown in Fig. 6. From that plane the bottom floors 52 of the wings 50 incline upwardly to merge in communicating relation with another water container 54, having a lesser area than that of container 48 and of a greater depth. The bottom of the container 50, the lower walls of section '16 and the inclined floors of the wing portions 50 combine to form a narrow arch over the middle portion of a grate 56 composed of three elongatedsections pivotally mounted in the base .of the boiler with their top surfaces in approximate coincidence with the lower ends of the boiler sections, and adapted to be partially rotated by means of bell crank levers 58, connecting bar 60 and pivotally mounted shaker handle 62 for shaking the ashes and cinders from the grate. The top of the container 54 is of upwardly tapered formation, and the container 48 is provided with a central vertical opening 64. The bottom of the door 66 through which coal is: supplied to the grate 56 is substantially flush with the top of the container 48, so that coal can be thrown through this door onto the top of the'container 48. A substantial portion of the coal passes through the central opening 64, whence it is diverted and distributed throughout the surface of the grate by the tapered surface of the container 54. It will be seen that the inner edges of the wing portions 50 are spaced apart, leaving a horizontal passageway 68 between the containers 48 and 54 so that lumps of coal falling through the opening 64 will be diverted through this passageway by the tapered top or roof of the container 54. A certain amount of the coal will also fall through the spaces 57 outside the Walls of the container 54. (Fig. 7.)

At the upper end of the boiler casing a suitable elbow 70 is inserted above the container 44 for conducting smoke and fumes from the boiler casing. A screen 72 may be suspended below the grate 56 to catch lumps of unburned coal which is shaken from the grate. The screen is preferably declined toward one side, as illustrated, so that the coal will be conveyed by gravity to a coal box 74 resting in a pit 75 in the concrete foundation 76, from which the coal box can be lifted and the coal dumped in the supply pile of coal. .The boiler sections 12 and 16 are seated on a flange 78 of a base section 80 which may terminate at its bottomin a tapered pan 82 having an outlet 84 through which ashes may pass through the screen 72 into a pan 86 in the pit 74. The base is provided with a slot 81 through which the lower end of the screen 72'projects over the coal box 74, and also a slot 83 through which the grate shaker bar 60 projects to the lever 62.

From the foregoing description and the drawings it will be seen that I have. provided a complete central heating unit in direct contact with the fire or flames of the fuel used, and that this advance unit is so constructed that it does not materially increase the cost of a conventional domestic boiler, and places the water circulating in the unit in the closest possible proximity to the fire generated by coal, or by other types of fuel. As indicated in broken lines 55 in Figs. 6 and 7, lumps of coal thrown onto the top of the container 54 will fill the spaces all around the container up to 'the edges of the tapered top, so that the water in thecontainers including that in the wings 50 will have direct contact with the hottest portion of the fire on the grate. 'In the manner illustrated the conventional container 44 will constitute a contributing factor in the overall heating efficiency of the improved boiler particularly as a receptacle for boiling water.

It is to be understood that the boiler illustrated may be converted to oil or gas fuel by substituting burners for the grate 56. It should be further understood that while in the drawings the boiler casing is shown in rectangular form, it may be made in circular or other desired formation.

Doors 88 and 90 may be provided in the base for cleanout or damper regulation. Also a small door 92 may be provided through the lower part of the front end section in substantial alignment with the top surface of the grate 56.

Obviously, various changes or modifications of my improved boiler may be made without-departing from the spirit and scope of my invention. Therefore, it should be understood that the embodiment of my invention shown and described is intended to be illustrative,

only,-and restricted only by the appended claims.

I claim: l.In a water boiler including a hollow base and a double walled casing inclosing a water circulating space,

said casing being seated on the top edge of said base, said water circulating space having water inlet and outlet connections, the lower end of said casing being open and defining a combustion chamber having therein a fuel burning appliance, a central heating unit above said appliance said unit comprising a pair of horizontal water containers in vertically spaced relation and spaced from the wall of said casing, said containers having a pair of hollow wing sections connecting them together and with opposite sides of the casing in intercommunicating relation with the water circulating space therein, the portions of said wing sections between said containers being spaced apart from each other, said wing sections extending from the upper edge of the upper container to a plane immediately above the lower end of said casing, the bottom walls of 'said wing sections being inclined from their junction with opposite sides of the casing to their junction with said lower container thereby forming with the bottom wall of said container an arch immediately above said fuel burning appliance.

2. A water boiler as claimed in claim 1 in which the fuel burning appliance includes a coal grate, in which the top of the lower water container is centrally and upwardly tapered, and in which-the upper water container is provided with a through central opening. 4

References Cited in the file of this patent UNITED STATES PATENTS 1,433,313 Vrooman Oct. 24, 1922 1,576,185 French Mar. 9, 1926 1,651,613 McPhee Dec. 6, 1927 2,401,988 Tribuson June 11, 1946 2,751,892 De Lecnardis June 26, 1956

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