EP0599305A1 - Multischalen-Element, Vorrichtung und Verfahren zum Anbringen von flexibelen Isolierplatten zwischen den Wänden von diesem Element - Google Patents
Multischalen-Element, Vorrichtung und Verfahren zum Anbringen von flexibelen Isolierplatten zwischen den Wänden von diesem Element Download PDFInfo
- Publication number
- EP0599305A1 EP0599305A1 EP93118968A EP93118968A EP0599305A1 EP 0599305 A1 EP0599305 A1 EP 0599305A1 EP 93118968 A EP93118968 A EP 93118968A EP 93118968 A EP93118968 A EP 93118968A EP 0599305 A1 EP0599305 A1 EP 0599305A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- walls
- formed piece
- accordance
- insulating
- tool
- 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.)
- Granted
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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
Definitions
- the invention addresses a multi-shell formed piece, in particular a pipe for restoring chimneys, said formed piece having at least two coaxially disposed, spaced-apart walls with insulating material provided therebetween.
- the present invention further addresses a device for providing flexible insulating plates between the coaxially disposed, spaced-apart walls of multi-shell formed pieces.
- the invention addresses a process for disposing flexible insulating plates between the walls of multi-shell formed pieces, preferably flue pipes for restoring chimneys, using the device of the invention.
- Multi-shell formed pieces of the kind in question have been known for years in the most various embodiments. Most of them are formed pieces for chimneys. An example is given in German applications DE-OS 19 22 581 and DE-OS 31 39 338.
- the insulating part of the formed piece known from DE-OS 19 22 581 consists of three shell segments forming a pipe-like shell in circumferential direction. Said segments are made of mineral wool and loosely inserted in the circular gap between the walls of the formed piece, with the interior walls or interior pipe being inserted after the pre-assembly of the insulating material.
- the shell segments used for insulating are expensive to manufacture and relatively large in size which in turn increases packaging, transportation and storage costs.
- shell segments of this kind often have a thickness tolerance of several millimeteres and, therefore, usually require grinding of the surfaces to a given desired thickness to allow insertion of the segements between the walls of the formed pieces. This procedure further increases manufacturing and assembling costs.
- the formed piece known from DE-OS 31 39 338 is also used to build chimneys, with the gap between the walls of the formed piece being filled with webs of mineral wool.
- the webs are first loosely fitted to the inner side of the external jacket of the formed piece. At their inner sides, the webs are then covered with thin sheet metal plates, said plates having portions which project over the edges of the formed piece and are bent toward the outsides.
- the sheet metal plates form a type of gap whose opening is slightly larger than the cross section of the inner wall or pipe to be inserted. The so formed sheet metal gap then receives the inner pipe resulting in the compression of the insulating layer. Once the insulting material is inserted, the sheet metal plates are removed so that the insulating material comes in close contact with the walls of the circular gap which it fills.
- an object of the invention to further develop and configure a formed piece such that it exhibits good insulation qualities while manufacture and design remain simple. Further, provision shall be made for a suitable device for disposing the insulating material between the coaxially disposed, spaced-apart wall of the multi-shell formed piece of the invention.
- the multi-shell formed piece accomplishes the aforementioned object with the features of claim 1.
- the multi-shell formed piece is characterized in that the insulating material consists of at least one bent insulating plate. Said insulating plate has a largely constant cross section and is preferably made of rock wool.
- the invention combines the spatial advantages of insulating plates, i.e. transportation, with the thermal advantages of insulating shells or pipes in that the originally flat plates are bent to assume the shape of a pipe and disposed between the walls of the formed piece to act as insulating material.
- the properties of the insulating plates must be such that they do not break during the bending procedure. This is achieved by selecting an appropriate initial density and laminating a fleece to one side of the plate. Since the insulating plate is bent, the fibers run almost parallel to the surfaces of the walls to be insulated and, hence, transverse to the direction of the heat current. This fact and the largely constant cross section of the insulating plates account for an optimal heat conduction resistance once the unit is fully assembled.
- Such formed pieces are particularly suitable for restoring already existing chimneys, a fact for which there is an increasing demand on the market as more and more boilers with an energy-saving heat output or so called low-temperature boilers are offered.
- the exhaust gas temperature is below the dew point allowing condensing water to precipitate at the interior walls of chimneys with poor thermal insulation. The wall thus become moist and flue gas exhaustion is impaired.
- the insulating material be configured at least in circumferential direction as one single piece, i.e. one single insulating plate is used in circumferential direction.
- the dimensions of this insulating plate would have to be such that the edges which run coaxially to the formed piece contact each other to thus form an insulating pipe.
- the contacting edges can be advantageously bevelled such that the portions of insulating material slightly overlap in the contact zone.
- the insulating plate may have a trapezoidal cross section. Dimensional tolerances at the edges do, hence, not have any negative effect as the wedge-like edges sufficiently overlap.
- the insulating plate it is also conceivable to configure the insulating plate as a pipe-like segment having a longitudinal slot. Said slot preferably runs tangentially to the inner wall of the pipe-like segment in order to advantageously account for tolerance differences even in pipe-like segments.
- the thickness of the insulating material or the insulating plate could allow for a some play between the walls of the formed piece and the insulating material.
- the walls can be provided with bars or spacers extending therebetween and preferably at the ends thereof. These spacers or bars thus firmly connect the walls to one another ensuring that a fixed distance is maintained throughout. Further, the walls cannot assume their coaxial position until the insulating material is inserted such that the insulating material itself acts as a spacer providing a largely constant distance between the walls. However, the latter possibility involves a higher degree of manufacturing complexity as the walls or pipes must be held in a coaxial arrangement during assembly.
- the aforementioned object is accomplished by the feature of claim 9.
- the internal and the external tool are in a largely coaxial arrangement.
- the internal and the external tools of the device of the invention when assembled, serve as a kind of extension of the walls of the formed piece to be insulated between the walls.
- this extension allows bending and inserting the insulating plate while receiving the insulating plate in the gap formed therebetween.
- the outside of the internal tool With respect to the structural design of the internal tool when the latter was detachably placed from the inside, onto the free end of the inner wall, it is a particular advantage to provide the outside of the internal tool with an external enlargement or the like preferably running in circumferential direction.
- Said external enlargement fulfills two functions: it serves as an abutment for stopping the insertion of the internal tool and acts as a transition to the inner wall of the formed piece thus effectively preventing the insulating plate from getting stuck to one of the more or less sharp edges.
- the external enlargement or the like is advantageously dimensioned such that it radially projects from the internal tool by the thickness of the inner wall of the formed piece. Again, the insulating plate is effectively prevented from getting stuck.
- the internal tool also advantageously projects from the area of the external tool in a direction facing away from the formed piece. Accordingly, the projecting portion of internal tool, especially the portion projecting from the area of the subsequently described external tool, serves as a forming aid and, hence, as an abutment to stop the insertion of the insulating plates.
- the internal tool is provided with a smooth outer surface. The same applies to the inner surface of the external tool.
- the external tool has a funnel-like configuration to actively support the insertion of the insulating plate into the gap between the walls of the formed piece. If the external tool is configured such that it is detachably placed, from the inside, onto the free end of the outer wall, it is particularly advantageous if the wall of the portion of the external tool which expands toward the free end acts as a stop or abutment. This saves the provision of special elements as abutments. If the external tool is configured such that it is detachably placed, from the outside, onto the free end of the outer wall, it is necessary to provide an enlargement directed toward the inside. Said enlargement then serves as an abutment when the tool is placed into position, and also as a transition leading over the free ends of the external wall.
- the end of the external tool facing away from the funnel-like portion advantageously projects, while urging against the outer wall, from the inside into the gap between the outer wall and the inner wall of the formed piece.
- This portion of the external tool hence, supports the smooth insertion of the formed piece.
- the inner wall of this portion is consequently provided with a smooth and even surface.
- the process of the invention for disposing flexible insulating plates between the walls of multi-shell formed pieces in accordance with the invention, especially between the walls of dual-shell pipes, preferably pipes for restoring chimneys, using the device of the invention for disposing such insulating plates is characterized by the features of claim 13.
- the process of the invention comprises the following operational steps: First, an external tool serving as a guide is detachably placed onto the formed piece. Subsequently, an internal tool serving as an abutment and to bend the insulating plate is detachably placed onto or inserted into the insulating plate. The sequence of placing or inserting the external and internal tools may be freely changed. Both the external and internal tools serve to guide and, if necessary, compress the insulating plates.
- the insulating plate to be inserted is bent around the internal tool. Then, the so bent insulating plate is inserted in the gap between the walls of the formed piece.
- the internal and external tools serve to guide and, if necessary, to compress the insulating plate when the latter is inserted. In any case, the insulating plate is compressed if it is, in a stress-free state, larger than the gap formed between the walls of the formed piece.
- Fig. 1 shows a dual-shell formed piece, or more strictly speaking a dual-shell pipe 1 in accordance with the invention.
- Said pipe 1 has two coaxially disposed, spaced-apart walls 2, 3 and a piece of insulating material 4 provided between said walls 2, 3.
- the insulating material 4 consists of insulating plates 5 with a largely constant cross section.
- the insulating plates 5 are made of rock wool.
- Fig. 2 The diagrammatic representation of Fig. 2 indicates that the fibers 6 of the rock wool have a preferred direction, i.e. they are uniformly oriented in one direction.
- the fibers 6 run approximately parallel to the surface of the insulating plate, thus also running approximately parallel to the surfaces of the walls 2, 3 and, hence, transversely to the direction of the heat current indicated by arrows 7 in Fig. 2.
- the insulating material is configured as one single piece running circumferential direction, i.e. one single insulating plate 5 in circumferential direction.
- Fig. 2 indicates that the axially disposed edges 8 of the insulating plate 5 contact each other. The edges 8 are bevelled to form an acute angle which ensures a slight overlapping of the insulating material 4 in the area of the contacting edges 8 so as to account for dimensional tolerances.
- Fig. 2 is at the same time a cross section of the pipe-like segment having a slot running almost tangentially to its inner wall.
- Fig. 3 clearly shows that the insulating plate 5, when unrolled, has a trapezoidal cross section in longitudial direction.
- Fig. 1 also shows that at their lower ends the walls 2, 3 are held by bars 9. Said bars 9 extend between the two walls thus connecting them so as to be spaced apart from each other at a foxed distance. Once the insulating material 4 is inserted the walls 2, 3 are further fixed in their positions by said insulating material 4. Thus, even the ends of the walls 2, 3 which do not have a cross-linking bar, i.e. the relative positions of the walls 2, 3, are quasi fixed.
- Fig. 4 shows an embodiment of a device in accordance with the invention for disposing the flexible insulating plate 5 between the coaxially disposed, spaced-apart walls 2, 3 of a dual-shell formed piece, i.e. the above discussed dual-shell pipe 1.
- the invention determines that the embodiment of the device in accordance with the invention as shown in Fig. 4 be provided with an internal tool 10 which can be detachably placed, from the inside, onto the free end of the inner wall 2 and, further, an external tool 11 which can be detachably placed, from the inside, onto a free end of the outer wall 3.
- the internal tool 10 and the external tool 11 are coaxially dispoed to each other and form a kind of extension of the pipe 1 to be filled with insulating plates 5.
- Fig. 4 also shows that the internal tool 10 is provided with a circumferential, external enlargement 12 which, on the one hand, serves as an abutment and, on the other hand, as a transition to the inner wall 2.
- the external enlargement 12 projects from the internal tool 10 by the thickness of the inner wall 2 and forms a transition from the internal tool 10 to the inner wall 2.
- Fig. 4 shows that the internal tool 10 projects form the area of the external tool 11 in a direction facing away from the formed piece or pipe 1.
- the internal tool 10 has a smooth external surface 13 to ensure smooth insertion.
- Fig. 4 also shows that the external tool 11 has an approximately funnel-like configuration.
- the external tool 11 has an area 14 which expands toward the free end. Said area 14 together with its wall forms a stop for the external tool 11. It is understood that the inner surface 15 of the expanding area 14 of the external tool 11 is also smooth to support the smooth insertion of the insulating plate 5.
- Fig. 4 may also serve to illustrate the process of the invention for disposing flexible insulating plates 5 between the walls 2, 3 of dual-shell pipes 1 using the above discussed device of the invention.
- the internal tool and the external tool 11 are detachably placed onto pipe 1 or between the walls 2, 3 of pipe 1.
- the internal tool 10 serves as an abutment and to bend the insultaing plates 5 while the external tool 11 acts as a guide.
- the internal tool 10 and the external tool 12 serve as guides for the insulating plate 5, and, if ncessary, to compress the latter.
- the insulating plate 5 is bent around the internal tool 10. Subsequently, the so bent insulating plate is inserted into the gap between the walls 2, 3. If necessary, the insulating plate 5 is compressed during its insertion. Once the insulating plate 5 is in its final position, i.e. completeley inserted, the internal tool 10 and the external tool 11 are removed again.
- Figs. 1 and 4 indicate that it is possible to successively insert as many insulating plates 5 as necessary into the gap between the walls 2, 3 until the gap is filled over the entire length of the formed piece. During their insertion into the gap between the walls 2, 3 in longitudinal direction, the insulating plates 5 were subject to compression which further improves thermal insulation.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Thermal Insulation (AREA)
- Building Environments (AREA)
- Multi-Conductor Connections (AREA)
- Laminated Bodies (AREA)
- Prostheses (AREA)
- Insulated Conductors (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4239476 | 1992-11-25 | ||
DE4239476A DE4239476A1 (de) | 1992-11-25 | 1992-11-25 | Mehrschaliges Formstück sowie Vorrichtung und Verfahren zum Verbringen biegbarer Dämmplatten zwischen die Wandungen des Formstücks |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0599305A1 true EP0599305A1 (de) | 1994-06-01 |
EP0599305B1 EP0599305B1 (de) | 1997-07-09 |
EP0599305B2 EP0599305B2 (de) | 2002-12-18 |
Family
ID=6473526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93118968A Expired - Lifetime EP0599305B2 (de) | 1992-11-25 | 1993-11-25 | Multischalen-Element mit flexiblen Isolierplatten zwischen den Wänden von diesem Element |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0599305B2 (de) |
AT (1) | ATE155195T1 (de) |
CZ (1) | CZ251993A3 (de) |
DE (2) | DE4239476A1 (de) |
HU (1) | HUT68557A (de) |
NO (1) | NO934246L (de) |
PL (1) | PL172731B1 (de) |
SI (1) | SI9300612A (de) |
SK (1) | SK132393A3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130192160A1 (en) * | 2007-02-12 | 2013-08-01 | John E. Meredith | Materials and methods for lining a chimney |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19704323C1 (de) * | 1997-02-05 | 1998-07-02 | Saskia Solar Und Energietechni | Evakuierter Hohlkörper zur Wärmedämmung |
DE102008005655B4 (de) * | 2008-01-23 | 2014-01-16 | Möck Professionelle Rohrsysteme GmbH | Verbindungsleitung zwischen Einzelfeuerstätte und Schornstein |
DE202008013010U1 (de) | 2008-09-30 | 2009-02-12 | Saint-Gobain Isover G+H Ag | Rohrisolierelement für Schornsteinsystem |
DE102019106028A1 (de) * | 2019-03-08 | 2020-09-10 | Color Emajl D.O.O. | Verbindungsrohr, Verfahren zur Herstellung eines Verbindungsrohrs |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE838499C (de) * | 1949-11-30 | 1952-05-08 | Edouard Maurice Nitsch | Rauch- oder Gasabzugsrohr, insbesondere Kaminelement und Verfahren zur Herstellung desselben |
FR1155852A (fr) * | 1951-09-21 | 1958-05-09 | Procédé et fabrication de conduits de fumée à gaine intérieure en béton réfractaire | |
AT346554B (de) * | 1977-07-20 | 1978-11-10 | Unipart Erzeugungs Und Handels | Vorgefertigtes isolierstueck |
AT348214B (de) * | 1976-07-05 | 1979-02-12 | Plein Wagner Soehne | Vorgefertigtes schornsteinrohrelement |
FR2409855A1 (fr) * | 1977-11-24 | 1979-06-22 | Chollet Jacques | Element prefabrique destine notamment a la construction de gaines |
EP0106390A1 (de) * | 1982-09-21 | 1984-04-25 | Amgas B.V. | Verfahren zur Herstellung einer wärmeisolierenden Faserschicht mit kohärenter Anordnung und wärmeisolierendes Element |
FR2537637A1 (fr) * | 1982-12-13 | 1984-06-15 | Schiedel Gmbh & Co | Pierre de manteau de cheminee destinee a une cheminee multicorps et procede pour y pratiquer une ouverture de reception d'un encadrement de porte ou d'un raccord pour tuyau |
DE3705725A1 (de) * | 1987-02-23 | 1988-09-01 | Ursula Schiedel Fa | Mehrschaliger isolierschacht |
DE3731550C1 (de) * | 1987-09-19 | 1989-01-26 | Plein Wagner Soehne | Vorgefertigtes Schornsteininnenrohrelement |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2118046B2 (de) * | 1971-04-14 | 1976-02-26 | Betonwerk München, Schiedel-Kamin, 8000 München | Schachtisolierung, insbesondere bei einem kamin oder abwurfschacht |
AT370856B (de) * | 1979-09-27 | 1983-05-10 | Voest Alpine Ag | Aus mineralwolle bestehende, mattenfoermige kaminisolierung |
DE3428080A1 (de) * | 1984-07-30 | 1986-02-06 | Schiedel GmbH & Co, 8000 München | Aussendaemmung fuer rundrohre, insbesondere fuer kamine |
DE3512089A1 (de) * | 1985-04-02 | 1986-10-09 | Grünzweig + Hartmann und Glasfaser AG, 6700 Ludwigshafen | Umfangsdaemmung fuer rundrohre, insbesondere fuer kamine |
-
1992
- 1992-11-25 DE DE4239476A patent/DE4239476A1/de not_active Ceased
-
1993
- 1993-11-23 CZ CZ932519A patent/CZ251993A3/cs unknown
- 1993-11-24 HU HU9303340A patent/HUT68557A/hu unknown
- 1993-11-24 NO NO934246A patent/NO934246L/no unknown
- 1993-11-24 PL PL93301184A patent/PL172731B1/pl unknown
- 1993-11-25 AT AT93118968T patent/ATE155195T1/de not_active IP Right Cessation
- 1993-11-25 DE DE69312025T patent/DE69312025T3/de not_active Expired - Fee Related
- 1993-11-25 SK SK1323-93A patent/SK132393A3/sk unknown
- 1993-11-25 EP EP93118968A patent/EP0599305B2/de not_active Expired - Lifetime
- 1993-11-25 SI SI9300612A patent/SI9300612A/sl unknown
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE838499C (de) * | 1949-11-30 | 1952-05-08 | Edouard Maurice Nitsch | Rauch- oder Gasabzugsrohr, insbesondere Kaminelement und Verfahren zur Herstellung desselben |
FR1155852A (fr) * | 1951-09-21 | 1958-05-09 | Procédé et fabrication de conduits de fumée à gaine intérieure en béton réfractaire | |
AT348214B (de) * | 1976-07-05 | 1979-02-12 | Plein Wagner Soehne | Vorgefertigtes schornsteinrohrelement |
AT346554B (de) * | 1977-07-20 | 1978-11-10 | Unipart Erzeugungs Und Handels | Vorgefertigtes isolierstueck |
FR2409855A1 (fr) * | 1977-11-24 | 1979-06-22 | Chollet Jacques | Element prefabrique destine notamment a la construction de gaines |
EP0106390A1 (de) * | 1982-09-21 | 1984-04-25 | Amgas B.V. | Verfahren zur Herstellung einer wärmeisolierenden Faserschicht mit kohärenter Anordnung und wärmeisolierendes Element |
FR2537637A1 (fr) * | 1982-12-13 | 1984-06-15 | Schiedel Gmbh & Co | Pierre de manteau de cheminee destinee a une cheminee multicorps et procede pour y pratiquer une ouverture de reception d'un encadrement de porte ou d'un raccord pour tuyau |
DE3705725A1 (de) * | 1987-02-23 | 1988-09-01 | Ursula Schiedel Fa | Mehrschaliger isolierschacht |
DE3731550C1 (de) * | 1987-09-19 | 1989-01-26 | Plein Wagner Soehne | Vorgefertigtes Schornsteininnenrohrelement |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130192160A1 (en) * | 2007-02-12 | 2013-08-01 | John E. Meredith | Materials and methods for lining a chimney |
US10280639B2 (en) * | 2007-02-12 | 2019-05-07 | John E. Meredith | Materials and methods for lining a chimney |
Also Published As
Publication number | Publication date |
---|---|
NO934246D0 (no) | 1993-11-24 |
PL172731B1 (pl) | 1997-11-28 |
DE4239476A1 (de) | 1994-05-26 |
EP0599305B2 (de) | 2002-12-18 |
ATE155195T1 (de) | 1997-07-15 |
EP0599305B1 (de) | 1997-07-09 |
CZ251993A3 (en) | 1994-08-17 |
SI9300612A (en) | 1994-06-30 |
DE69312025D1 (de) | 1997-08-14 |
HU9303340D0 (en) | 1994-03-28 |
SK132393A3 (en) | 1994-06-08 |
HUT68557A (en) | 1995-06-28 |
DE69312025T2 (de) | 1998-01-08 |
NO934246L (no) | 1994-05-26 |
DE69312025T3 (de) | 2003-10-16 |
PL301184A1 (en) | 1994-05-30 |
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