EP0732465A1 - Schornstein-Isolierelement - Google Patents

Schornstein-Isolierelement Download PDF

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Publication number
EP0732465A1
EP0732465A1 EP96104061A EP96104061A EP0732465A1 EP 0732465 A1 EP0732465 A1 EP 0732465A1 EP 96104061 A EP96104061 A EP 96104061A EP 96104061 A EP96104061 A EP 96104061A EP 0732465 A1 EP0732465 A1 EP 0732465A1
Authority
EP
European Patent Office
Prior art keywords
insulating element
chimney
casing
chimney insulating
inner pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96104061A
Other languages
English (en)
French (fr)
Inventor
Rolf Sommer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Isover G+H AG
Original Assignee
Gruenzweig und Hartmann AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gruenzweig und Hartmann AG filed Critical Gruenzweig und Hartmann AG
Publication of EP0732465A1 publication Critical patent/EP0732465A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F17/00—Vertical ducts; Channels, e.g. for drainage
    • E04F17/02—Vertical ducts; Channels, e.g. for drainage for carrying away waste gases, e.g. flue gases; Building elements specially designed therefor, e.g. shaped bricks or sets thereof
    • E04F17/023—Vertical ducts; Channels, e.g. for drainage for carrying away waste gases, e.g. flue gases; Building elements specially designed therefor, e.g. shaped bricks or sets thereof made of masonry, concrete or other stone-like material; Insulating measures and joints therefor

Definitions

  • This invention relates to a chimney insulating element according to the preamble of claim 1.
  • Chimneys or smokestacks are usually provided with thermal insulation between inner pipe and casing to protect the casing from excessive heating, on the one hand, and ensure a good draft of the chimney, on the other hand, and furthermore to avoid fast cooling of the smoke pipe in the interests of low condensate formation.
  • insulating elements of mineral wool which are adapted in contour to the circumference of the inner pipe.
  • AT-PS 346 554 it is known from AT-PS 346 554 to provide insulation boards of mineral wool at predetermined intervals with cavities which are for example introduced into the insulation board from outside by mechanical processing to permit the insulation board to be bent into a tubular insulating element in accordance with the tubular inside contour of the casing and the tubular outside contour of the inner pipe.
  • the problem of the invention is to provide an easily produced chimney insulating element which can be transported cost-effectively and mounted easily and in secure position.
  • This problem is solved according to the invention by the features contained in the characterizing part of claim 1, expedient developments being characterized by the features contained in the subclaims.
  • the chimney insulating element is formed according to the invention as a polygon at least on the outside, i.e. on its outside surface facing the casing.
  • the insulating element therefore not only limits rear ventilation cavities with the opposite casing, but its circumference is only in areal contact limited to certain areas with the casing so that it is easier to introduce the insulating element between casing and inner pipe due to the low frictional forces.
  • the inside contour of the chimney insulating element is at the same time also formed as a polygon in accordance with the outside contour, the resulting contact area with a usually circular inner pipe is only linear, which greatly reduces the frictional resistance and thus facilitates introduction of the insulating element into the space between inner pipe and casing.
  • a polygonal contour on the inside causes rear ventilation cavities to be formed between insulating element and preferably circular inner pipe, so that when the smoke pipe is greatly heated the air in the cavities is also heated permitting heat to be removed upward over the roof.
  • This also allows the use of insulating elements which are otherwise advantageous but not very temperature-stable, since the heat removal taking place between insulating layer and smoke pipe reduces the temperature stress on the insulating material even at a soot burning temperature of approx. 1000 C. If ventilation of the cavities is undesirable, it can easily be prevented by mounting a lid or any other upper cover.
  • the merely linear contact with the inner pipe also results in a lower heat load on the insulating layer compared to areal contact between insulating element and inner pipe.
  • the insulating element system is preferably formed as an octagon with circular smoke pipes and as a square with rectangular or square inner pipes, although other polygonal forms, in particular pentagons, hexagons or heptagons, can also be expedient.
  • Shifted or twisted installation of the insulating element is excluded in advantageous fashion if the length across the corners of the insulating element is greater than the clear width of the casing. This also reliably avoids installation errors with the joint in the rear ventilation area, regardless of whether the insulating element exists in one piece or is formed from several boards. It also reliably prevents the insulating elements from yielding into the rear ventilation areas.
  • a further advantage is the exact positioning of a polygon within a space between casing and inner pipe, whereby a force-locking seat can be obtained with the element lying against the inner pipe and the casing. If one realizes a circumferential hollow channel, a so-called annular gap, between insulating element and casing it is possible to fasten the element to the smoke pipe in simple fashion via strong surface material and mechanical fastening means. These mechanical fastening means are unnecessary if the outside contours of the insulating elements and the inside contours of the casing bricks are coordinated with each another in such a way as to prevent the insulating elements from yielding in the installed state.
  • the chimney insulating elements consisting of insulation boards are obtained by folding the same, because they are provided parallel to their longitudinal axis with groovelike recesses, e.g. with a V-shaped cross section, the grooves being formed, and/or the intervals between the grooves selected, in such a way that the desired polygons are obtained when the boards are folded, the ends of a board meeting to form the polygon.
  • the joint is preferably located in the corner area of the polygonal insulating element in the installed state.
  • the surface of the insulation boards opposite the grooves is expediently lined, preferably with glass mat or with another strong surface material, such as glass fabric, glass laminate or thread-reinforced glass mat, so that mechanical fastening means can engage it accordingly.
  • the invention thus provides polygonal chimney elements starting out from a board form.
  • the chimney shown in Fig. 1 is formed from prefabricated casing 1 in the manner of a casing brick made e.g. of lightweight concrete with a square cross section here, flue gas-carrying inner pipe 2 made e.g. of ceramic material, and insulating element 3 of mineral wool disposed therebetween, whereby it need not be explained here that casing bricks 1 and inner pipes 2 are stacked in layers as prefabricated elements to form the chimney and the insulating elements accordingly disposed therebetween.
  • the chimney element shown in Fig. 1 is made of mineral wool, starting out from an insulation board shown schematically in Fig. 6 and described more closely in the following.
  • Chimney insulating element 3 has a corresponding polygonal contour on the outside and inside, the contour of an octagon here.
  • the length of insulating element 3 measured across opposite corners is greater than the clear width of inside casing 1, so that the insulating element is positioned exactly within a space between circular inner pipe 2 and casing 1. Shifted or twisted installation is impossible. Insulating element 3 is seated firmly within the space, the inner boundary being in approximately linear contact with inner pipe 2 at 4, and the outside of insulating element 3 being in areal contact with casing 1 at 5.
  • insulating element 3 limits channel-like rear ventilation cavities 6 with casing 1, on the one hand, and channel-like cavities 7 with inner pipe 2 which is circular here, on the other hand, which can be used for rear ventilation if necessary.
  • an air circulation can arise within cavities 7 so that heat is removed upward thereby reducing the temperature stress on the insulating element.
  • the linear contact of insulating element 3 with inner pipe 2 at 4 reduces the direct temperature load on the insulating layer likewise coming from the smoke pipe, which in turn, in conjunction with preceding cavities 7, leads to lower heat stress on insulating elements 3.
  • the linear contact surface results in reduced frictional resistance upon assembly of insulating elements 3 or the smoke pipes.
  • the air current within rear ventilation cavities 7 is dependent on the gap width and temperature difference. For example at a temperature difference of approx. 50 K, normal air pressure of 105 Pa and a gap width of about 0.1 m an air flow will arise, whereas e.g. at 200 K turbulent flow is to be expected. In low temperature heating systems, however, where there is no convection, i.e. "airing", at all e.g. at temperature differences of approx. 20 K if the gap width is under 0.01 m, the "steady air cushions" in rear ventilation cavities 7 can be considered insulation supplementing the linear contact of insulating elements 3.
  • the insulating element is formed from a board-shaped initial element according to Fig. 6 by making the ends of the board meet.
  • insulating element 3 can also be formed from two or more boards which are set together along the circumference in abutting relationship. Since the board or boards abut in the area of the corners of the polygon, the insulating products cannot yield into the rear ventilation areas. Installation errors with joints in the rear ventilation area are also reliably avoided since, as described above, the diagonally measured greater length of the insulating element compared to the clear width of the casing bricks makes shifted or twisted installation impossible.
  • octagonal insulating element 3 is again disposed between casing 1 and circular inner pipe 2.
  • Insulating element 3 is lined on the outside surface facing the casing with a strong surface material, e.g. glass fabric or glass laminate, so that insulating element 3 can be fastened to the smoke pipe via the surface material and mechanical fastening means 8.
  • mechanical fastening means 8 consist of steel springs or clamps.
  • Rear ventilation cavities 7 are also present between insulating element 3 and inner pipe 2 in the embodiment of Fig. 2, outer rear ventilation cavities 6 now being formed as a ring channel running all around the circumference.
  • Fig. 3 shows square insulating element 3 adapted on its inside to the outer contour of inner pipe 2 which is rectangular or square here. Rear ventilation cavities are provided here only between insulating element 3 and casing 1, being formed again as a ring channel running all around. Insulating element 3 is fastened to smoke pipe 2 again here via strong surface material and mechanical fastening means 8.
  • Figs. 4 and 6 show chimney insulating elements in their flat form, as supplied, in the manner of an elongate board, the boards being folded for use as insulating elements into polygonal insulating element 3 shown in Figs. 1 to 3. For this purpose the insulation boards of Fig.
  • the insulating elements are expediently provided with a lining of glass mat or another strong surface material, whereby stronger surface material is used in particular in embodiments according to Figs. 2 and 3 and the glass mat in embodiments according to Figs. 1 and 5 where the insulating elements are received in the space between inner pipe 2 and casing 1 with a force-locking seat.
  • the lining is illustrated at 11. However it is also conceivable to omit the lining, i.e.
  • the lower portion of the insulation board shown in perspective in Fig. 4 has, as an alternative, rear ventilation cavities 7 which not only provide ventilation between inner pipe 2 and insulating element 3 but also advantageously compensate thickness tolerances and reduce the friction.
  • insulating element 3 is formed as a polygon, an octagon here, only with respect to its outside contour, and held by fastening blocks 8 formed integrally with the casing here and having V-shaped receiving surface 9 adapted to the corners of the insulating element.
  • the inside contour of insulating element 3 is adapted to the circular contour of inner pipe 2 according to Fig. 5 so that cavities 6 for rear ventilation are formed only between the outside contour of the insulating element and the casing.
  • insulating element 3 is also provided with a corresponding polygonal contour, an octagon here, on the inside, thereby again forming rear ventilation channels.
  • Fastening blocks 8 with which receiving surfaces 9 are formed can be part of casing bricks 1 or be mounted additionally thereon. Instead of the fastening blocks one can also use mechanical aids, e.g. metal profiles or other suitably formed fittings.
  • the fastening blocks or aids can also be located at any other suitable place on the inner surface of the casing bricks, e.g. in the corners of the casing bricks for receiving the outside corners of insulating elements formed into square frames according to Fig. 3.
  • fastening block is a simplified expression for an element which locks the insulating elements in the desired position but also positions the smoke tube column with insulating material in the center of the casing brick and holds it in this position.
  • chimney insulating element 3 is formed as a hexagon, with channel-like rear ventilation cavities 6 and 7 being formed between insulating element 3 and circular inner pipe 2, on the one hand, and between insulating element 3 and casing brick 1, on the other hand.
  • insulating element 3 is held on two opposite sides in the corner area by fastening blocks 8 with V-shaped receiving surfaces 9, whereas riblike projections 13 are formed on the two other sides of casing brick 1 for supporting the outside surfaces of insulating element 3 on both sides.
  • Fastening blocks 8 and ribs 13 can here, too, be formed integrally with the casing brick or fastened to the casing brick as separate components.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chimneys And Flues (AREA)
  • Thermal Insulation (AREA)
EP96104061A 1995-03-17 1996-03-14 Schornstein-Isolierelement Withdrawn EP0732465A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995109890 DE19509890C1 (de) 1995-03-17 1995-03-17 Schornstein-Dämmelement
DE19509890 1995-03-17

Publications (1)

Publication Number Publication Date
EP0732465A1 true EP0732465A1 (de) 1996-09-18

Family

ID=7757052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96104061A Withdrawn EP0732465A1 (de) 1995-03-17 1996-03-14 Schornstein-Isolierelement

Country Status (5)

Country Link
EP (1) EP0732465A1 (de)
CZ (1) CZ78796A3 (de)
DE (1) DE19509890C1 (de)
PL (1) PL313279A1 (de)
SI (1) SI9600091A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT404630B (de) * 1996-04-24 1999-01-25 Rockwool Mineralwolle Dämmelement
EP1035374A1 (de) * 1999-03-05 2000-09-13 Wilfried Seitz Schornsteinaufbau mit Dämmschale aus Mineralwolle
EP1058057A1 (de) * 1999-06-04 2000-12-06 Wilfried Seitz Schornsteinaufbau mit Verbrennungsluftzufuhr
AT508083B1 (de) * 2006-01-13 2011-07-15 Anzinger Erwin Mehrschaliger kamin

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10100481A1 (de) * 2001-01-08 2002-07-11 Saint Gobain Isover G & H Ag Kaminfertigelement
DE102014118542A1 (de) * 2014-12-12 2016-06-16 Saint-Gobain Isover G+H Ag System für eine brandschutzgesicherte Deckendurchdringung einer Abgasanlage oder einer Heißleitung, insbesondere einer Flachdachdecke sowie hierfür geeignete Dämmkörper.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT346554B (de) * 1977-07-20 1978-11-10 Unipart Erzeugungs Und Handels Vorgefertigtes isolierstueck
EP0209815A2 (de) * 1985-07-17 1987-01-28 Union-Bau Frankfurt GmbH Mantelstein für mehrschalige Schornsteine
DE3623071A1 (de) * 1986-07-09 1988-01-21 Otavi Minen Ag Mehrschaliger montageschornstein
DE3705725A1 (de) * 1987-02-23 1988-09-01 Ursula Schiedel Fa Mehrschaliger isolierschacht
DE3817341A1 (de) * 1987-06-01 1988-12-22 Otavi Minen Ag Mehrschaliger montageschornstein
JPH01193512A (ja) * 1988-01-28 1989-08-03 Toshio Okawa 角形煙突材の製造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3151327A1 (de) * 1981-12-24 1983-07-07 Krauss Kaminwerke München-Geiselbullach GmbH & Co KG, 8031 Geiselbullach Kamin zum abzug von rauchgasen
DE3512089A1 (de) * 1985-04-02 1986-10-09 Grünzweig + Hartmann und Glasfaser AG, 6700 Ludwigshafen Umfangsdaemmung fuer rundrohre, insbesondere fuer kamine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT346554B (de) * 1977-07-20 1978-11-10 Unipart Erzeugungs Und Handels Vorgefertigtes isolierstueck
EP0209815A2 (de) * 1985-07-17 1987-01-28 Union-Bau Frankfurt GmbH Mantelstein für mehrschalige Schornsteine
DE3623071A1 (de) * 1986-07-09 1988-01-21 Otavi Minen Ag Mehrschaliger montageschornstein
DE3705725A1 (de) * 1987-02-23 1988-09-01 Ursula Schiedel Fa Mehrschaliger isolierschacht
DE3817341A1 (de) * 1987-06-01 1988-12-22 Otavi Minen Ag Mehrschaliger montageschornstein
JPH01193512A (ja) * 1988-01-28 1989-08-03 Toshio Okawa 角形煙突材の製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 489 (M - 888) 7 November 1989 (1989-11-07) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT404630B (de) * 1996-04-24 1999-01-25 Rockwool Mineralwolle Dämmelement
EP1035374A1 (de) * 1999-03-05 2000-09-13 Wilfried Seitz Schornsteinaufbau mit Dämmschale aus Mineralwolle
EP1058057A1 (de) * 1999-06-04 2000-12-06 Wilfried Seitz Schornsteinaufbau mit Verbrennungsluftzufuhr
AT508083B1 (de) * 2006-01-13 2011-07-15 Anzinger Erwin Mehrschaliger kamin

Also Published As

Publication number Publication date
PL313279A1 (en) 1996-09-30
DE19509890C1 (de) 1996-09-26
SI9600091A (en) 1996-10-31
CZ78796A3 (en) 1996-10-16

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