FI60755C - SKINSTEN - Google Patents

Description

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C (45) Patent syjr.nctty 10 03 1932 Patent aeddelat y (51) Kv.ik3 / itrt.a.3 e 0A P 17/02 FINLAND - FINLAND (21) P «ttnttlh.ktmu« -PknUmOMki 801022 (22) Hikamiiptivl - Aiwttknlngtdag 01. OU. 80 '(23) Alkupilvt — Giltlghetsdag 01.0U.80 (41) Interpreters for Public - BIMt offentllg 02.10.8l

Patent and Registration Office .... ... ...

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Patent- och registerstyrelsen v 'AnsAksn uti «* d och utUkrift. * Pubdcerxf 30.11.8l (32) (33) (31) Privilege requested —Begird prloritet (71) Oy Lohja Ab, Lohjan mlk., FI; The present invention relates to a thermally insulated chimney comprising a flue part made of a refractory material. 0U300 Hyimolä, Virkkala, Finland-Finland (FI) (7U) Oy Kolster Ab (5U) Thermally insulated chimney - Värmeisolerad skorsten formed by overlapping, interconnected flue elements, a thermal insulation portion surrounding the flue portion formed by the overlapping tubular insulating elements, and an outer shell surrounding the insulating portion formed by the overlapping interconnected lightweight sorbent concrete slabs.

A chimney is already known, in which the insulating part consists of a uniform layer of lightweight sorbent concrete, which is cast between the chimney part and the outer shell when the chimney is built. The casting is performed gradually as the height of the chimney part and the outer shell increases.

The disadvantages of this structure are the relatively poor thermal insulation and the labor-intensive and concrete construction method.

DE 2 831 317 and CH 601 611, on the other hand, disclose a thermally insulated chimney whose thermal insulation part is formed by overlapping tubular insulating elements. Since the thermal insulation material does not have to be binding or castable, it can be selected almost exclusively on the basis of the thermal insulation properties 2 60755. In addition, stacking tubular elements on top of each other is faster than pouring concrete into a narrow ring space.

When building the chimney, a binder layer is placed on the upper end surface of the uppermost flue element. It is an object of the present invention to provide a chimney in which it is even simpler to place a binder layer on top of a chimney element. The invention is characterized in that the end surfaces of the flue elements consist of two concentric ring surfaces of different levels, so that in the finished chimney the outer ring surface is lower. This design has the advantage in connection with tubular thermal insulation elements that the approximately vertical shoulder between the ring surfaces, the lower ring surface and the inner surface of the thermal insulation element form a groove for the mortar layer which binds the flue elements together. The heat-insulating element thus acts as a mold at the same time.

The chimney according to the invention will now be described in more detail with reference to the accompanying drawing, in which Figure 1 shows a longitudinal section of a chimney according to the invention, Figure 2 shows one ingot element, Figure 3 shows one thermal insulation element, Figures 4 and 5 show two types of chimney elements.

Figure 1 shows a chimney according to the invention comprising a flue part 1, a surrounding thermal insulation layer 2 and an outermost outer shell 3. The figure also shows a base 4, a chimney soot housing 5, a heating boiler 6 and a chimney 7.

The chimney part 1 is formed by overlapping, special mortar-connected mold elements 8 (Figures 4 and 5), which are e.g. refractory special concrete. The outer shell 3, in turn, consists of overlapping ingot elements 9 (Fig. 2), in the middle of which there is a through hole 10 for the flue elements 8 and the thermal insulation layer 2. The corners of the ingot elements have vertical holes 11 into which reinforcing bars can be inserted for reinforcement, if desired.

The thermal insulation layer 2 consists of overlapping tubular insulating elements 12, which are preferably made of mineral wool, which has a very good thermal insulation capacity.

3 60755

Thanks to the tubular thermal insulation elements, a mold for the mortar can be formed in a simple manner between the overlapping flue elements 8. For this purpose, the end surfaces of the flue elements have two concentric and different planar ring surfaces 13 and 14, of which the outer surface 14 is lower. The ring surfaces are connected to each other via an approximately vertical shoulder 15. A groove is then formed between this shoulder, the outer ring surface 14 and the inner surface of the thermal insulation element 12, into which the mortar is easy to apply. This groove is clearly shown in Fig. 6. Attached to the upper end of the barrel is, for example, the barrel cap 16 shown in Fig. 1.

The chimney according to the invention is assembled in the following way.

A layer of mortar is applied on the base 4 and the lowest ingot element 9 is mounted on it. The first mineral wool pipe 12 and the first flue element 8 are then pushed into place. Mortar is applied to the upper surface of the lowest block element with the mineral wool tube acting as an internal mold and the second block element is installed in place. Mortar is applied to the groove of the first flue element formed between the shoulder 15, the ring surface 14 and the rock wool pipe 12 and the next flue element is lowered into place.

It is then proceeded to assemble the chimney so that the mineral wool pipe 12 always acts as a mold in the seam of both the ingot element 9 and the flue element 8.