US2213189A - Central heating boiler - Google Patents

Description

Sept. 3, 1940.

J. v. GuDMAND-HQYER Er AL 2,213,189

CENTRAL HEATING BoILER Filed Nov. 27, 19:57v

F1' g. 1. I 21 Patented Sept., 3, 1940 si.; STATES CENTRAL HEATllNG BILER Application November 27, 1937, Serial No. 176,782 In Denmark December 14, 1936 3 Claims'.

The invention relates to central-heating boilers of the art consisting of several interconnected water-filled units.

The invention has for its objects rstly to en- 5 able each of the units to be manufactured independently from the other units, and consequently, to be removable fromthe boiler for repairing or inspecting purposes Without necessity of setting the boiler as a Whole out of operation for this reason; secondly to create a boiler of the art specified in which a Very large grate area can be used in order to enable the burning of all kinds of fuel, also such having only a low caloric value, hereby making the boiler specially iitted for horticultural use or the like, Where great lots of fuel with low caloric power is available; thirdly to create a boiler with a very great Jfuel magazine, which can stand unattended for a long time, the construction being so, that the ash produced will not stop the air from haying access to the burning fuel.

With these and other objects in mind an embodiment of a boiler in accordance with the invention shall be described under reference to the drawing, on which Fig. l shows a vertical section of the boiler, and

-Fig. 2 the same in plan view, with the cover removed.

The boiler shown consists mainly of four units, Viz.. an outer water jacket l, an inner water jacket 2, and a pipe basket t with collecting chamber forming a part of the fuel magazine proper l with water-lled Walls. The space encircled by the inner water jacket 2 is closed, at the bottom, by a grate 5, While the annular space t between the two water jackets is connected at .the bottom to the chimney ue l and, at the top, to the space S encircled by the inner water jacket, in which space the pipe basket 3 is inserted. The pipe basket consists of more superimposed Water-nlled pipes forming a .grate like construction interconnecting, vertical collecting chambers 3. rEhe pipe basket may be made in one or more parts. The fuel magazine is fitted, at the top, with an opening that can be closed mea-ns of a cover 9. The Iboiler itself can be closed, at the top, by means of a cover lil, and `it rests at the bottom on a footing ll.

The outer water jacket l is connectedto a return pipe l2 terminating at the bottom in the Water jacket, and also by means of a nipple i3 at the top of the water jacket l, to a collecting chamber lll disposed outside of the boiler. By means of pipes l5 which also serve to support the grate 5, the said collecting chamber is con- (Cl. IN2- 162) nected at the bottom to the inner Water jacket 2, in that the pipes l5 are connected to nipples Iii on the said Water jacket, by means of pipe joints l'l disposed outside of the boiler. The inner water jacket 2 is further fitted, at the top, with pipe nipples i8, which by means of pipe joints l@ are connected to pipes 2li leading to an outlet box 2 l.

The two Water jackets l and 2 form a group of units connected 'to the return pipe on the one side and to the outlet box on the other side. They form thus a separate closed circuit.

The collecting chamber lll has further two pipe nipples 22 which by means of pipe joints 23 are connected to two pipe nipples 2d leading into the bottom of the pipe basket 3. The latter is iitted, at the top', with pipe nipples 25 which by means of pipe joints 26 are connected to pipes El leading up to the collecting box 2 l. The pipe'basket 3 forms thus in the boiler an independent meinber connected on the one side to the collecting box ld and, on the other side, to the collecting box 2l. In the same manner, the water-filled Walls 4 in the fuel magazine are similarly connected to 'the collecting box i4, and respectively, the collecting box 2l, by means of pipes 28 and 29 and pipe joints 3U and 3|, in such a manner that also these Walls form an independent unit in the boiler.

The boiler is further, in a manner known per se, fitted with dampers and gates for the supply `of prhnary and secondary air as well as for cleaning for ash, slag and soot.

It is seen that all the pipe joints ll, i9, Z2, 26, 3B and 3l, by means of Which the units of the boiler are interconnected, are situated outside of the boiler so as to be easily accessible, in such a manner that the units can easily be taken apart. It will thus especially easily be feasible to disconnect and remove the fuel magazine i and the pipe basket 3, without the boiler having therefore to be set out of operation.

Further it is seen that the fuel filled in the magazine can first burn on the grate proper 5. When this is clogged by ash the air has;` access to the burning fuel through the openings between the pipes in the pipe basket 3. The filled magazine therefore can stand unattended for a long time.

We claim:

l. A heater, comprising an outer cylindrical Water jacket, an inner cylindrical water jacket disposed concentrically within said outer jacket in spaced relationship to the latter so as to provide an annular nue therebetween, a grate closing the bottom of said inner` jacket, a re box basket including a plurality of vertical Water pipes projecting upwardly from said grate and being disposed at spaced intervals on a circle having a diameter less than that of said inner Water jacket, said grate having some of its perforations outside of said circle, and a plurality of circular tubes supported in superposed spaced relationship on said vertical pipes and interconnected therewith, and a fuel magazine including an innermost cylindrical Water jacket having a diameter less than that of the fire box basket and projecting from above into the latter.

2. A heater, as claimed in claim 1, comprising further pipes interconnecting said Water jackets and basket pipes and including joints disposed outside of said outer1 jacket.

3. A heater, as claimed in claim 1, comprising further Water collecting chambers, pipes interconnecting said water jackets, basket pipes and collecting chambers, and joints for said pipes, said collecting chambers and joints being disposed outside of said outer jacket,

JULIUS VILLIAM GUDMAND-HQYER. EINAR KAIVIILO DEMANDT HANSEN.

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