EP1103763B1 - Chimney - Google Patents

Chimney Download PDF

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Publication number
EP1103763B1
EP1103763B1 EP00850196A EP00850196A EP1103763B1 EP 1103763 B1 EP1103763 B1 EP 1103763B1 EP 00850196 A EP00850196 A EP 00850196A EP 00850196 A EP00850196 A EP 00850196A EP 1103763 B1 EP1103763 B1 EP 1103763B1
Authority
EP
European Patent Office
Prior art keywords
chimney
jacket
insulating material
flue
outer jacket
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.)
Expired - Lifetime
Application number
EP00850196A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1103763A1 (en
Inventor
Anders Engdahl
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.)
NORDISKA SKORSTENSPRODUKTER AB
Original Assignee
Nordiska Skorstensprodukter AB
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 Nordiska Skorstensprodukter AB filed Critical Nordiska Skorstensprodukter AB
Publication of EP1103763A1 publication Critical patent/EP1103763A1/en
Application granted granted Critical
Publication of EP1103763B1 publication Critical patent/EP1103763B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J13/00—Fittings for chimneys or flues 
    • F23J13/02—Linings; Jackets; Casings
    • F23J13/025—Linings; Jackets; Casings composed of concentric elements, e.g. double walled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J11/00—Devices for conducting smoke or fumes, e.g. flues 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2213/00—Chimneys or flues
    • F23J2213/30—Specific materials
    • F23J2213/301—Specific materials flexible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2213/00—Chimneys or flues
    • F23J2213/30—Specific materials
    • F23J2213/303—Specific materials metallic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2213/00—Chimneys or flues
    • F23J2213/40—Heat insulation fittings

Definitions

  • the present invention is for a chimney which may be used with one or more fireplaces or hearths both at new installations and rebuilding.
  • Chimneys for fireplaces or hearths which are intend to generate heat primarily for heating and hot water generation have traditionally been built of brick.
  • the chimney stack then mainly has its extension inside through the building.
  • chimneys having chimney flues made from steel Due to the high temperatures of the flue gases these ways of building strictly regulated and at known constructions it is required that the the chimneys or flues are built into special shafts in the building. This takes up a lot of space and means that the building of the chimney must be at the site. Further requirements then are that the shaft must be sealed so that the intrusion of oxygen to possibly leaking out flue gases is prevented as the gases may be explosive.
  • Conventional outer jackets made from metal or concrete, pumice or the like has joints and are not satisfactorily sealed.
  • US 3 464 174 or GB 1 032 469 discloses prior art chimneys comprising a steel tube flue, a surrounding jacket and insulating material between the flue and the jacket.
  • the object of the present invention is a chimney which has flue flues made from steel and so made that it may be installed without a shaft.
  • a chimney may be installed inside or adjacent all kinds of building constructions and building materials.
  • the chimney according to the invention has the features according to claim 1 and the embodiments of the invention are defined in the dependent claims.
  • the chimney In order that the chimney may be installed without a shaft the temperature at its outer surface may not at any moment or at any spot be above a highest allowed temperature.
  • the chimney according to the present invention thus has a smoke flue which is surrounded by an inner jacket and an outer jacket, preferably made from steel.
  • the space between the outer jacket and the smoke flue is filled with insulating material which is of granular or powder form or other form which allows flowing of the material.
  • the chimney is so designed that no empty pockets may occur within the insulating material neither at manufacture nor at use.
  • the inner jacket is so adapted that its has regular discontinuities through which the insulating material may pass between the two sides of the inner jacket, where the motions of the insulating material may be caused by expansion and retraction of the smoke flue due to the always occurring changes of temperature.
  • the smoke flue is made from corrugated steel.
  • a reservoir or compensation possibility for insulating material is arranged at the top section of the chimney.
  • Figure 1 is a horizontal cross section through a vertical section of a chimney.
  • Figure 2 is a vertical cross section through the section of the chimney.
  • Figure 3 is a vertical cross section through a partially deflecting chimney.
  • the chimney according to the invention comprises a smoke flue 1 which is surrounded by an inner jacket 2 and an outer jacket 3.
  • the inner jacket flue 2 is connected to the outer jacket 3 by means of members 4 whereas the smoke flue 1 is freely arranged inside the inner jacket.
  • the three tubes are mainly concentric but deviations occur at chimneys having deflections.
  • the space between the outer jacket 3 and the smoke flue 1 is totally filled with insulating material.
  • the smoke flue 1 is preferably made from corrugated, spirally wound steel which forms a flexible tube. Goods and dimensions are selected considering the application where the selection of fuel and the number of hearths are essential parameters.
  • the smoke flue tube is continuous without any discontinuities or junctions except for possible branching where smoke flues from several hearths are joined.
  • the outer jacket 3 is divided into sections which are joined by sleeves to a continuous outer jacket.
  • the inner jacket 2 is divided into sections. These are fixedly mounted to the outer jacket by means of members 4 so that there is a open slot between each of the inner jacket sections
  • Chimneys according to the invention may be made with some sections deflecting from the vertical line for example as shown in figure 3.
  • the sections of the outer jacket are connected by sleeves 7 and the section of the inner jacket in a corresponding way by joint guides 8.
  • joint guides 8 There are members 4 as required between the outer and inner jacket and that section of the inner jacket which deviates from the vertical line is preferably without joint slots.
  • the insulating material 5 is selected so that it will fill up all of the accessible spce between the smoke flue and outer jacket. Thus the material ought to be powdered or granular and be flowing.
  • the individual sections of the outer and inner jacket are first joined together where after jacket sections are put together to a chimney jacket.
  • the flexible flue is then inserted into the jacket and connected to the hearth in known manner.
  • the insulating material is filled in between the flue and the outer jacket by way of pouring into the volume 5 from the top of the chimney.
  • the slots between the sections of the inner jacket will then secure that all accessible space is filled with insulating material as this may flow both vertically downwards into accessible volumes and between the sides of the inner jacket by passing through the slots.
  • the chimney When in use the chimney is exposed to great variations of temperature which cause expansion and contraction of the flue and the jackets, causing that the insulating material is deformed and very slowly disintegrates into small parts. The disintegration and the movements cause a gradual compacting of the insulating material. Additional insulating material may continuously be added from the storage container and the upwards and downwards movements of the corrugated surface, which are caused by the changes of temperature, provide a feeding function which secures that fresh insulating material is continuously supplied so that no empty pockets occur in the insulation. At the top of the chimney there are means for compensation of the reduced volume of insulating material.
  • this comprises a ring of rockwool or the like flexible or elastic insulating material which fills up the entire space between the flue and the outer jacket At the assembly the height of the ring is compressed and it then expands downwards as the volume of the granular insulating material is reduced.
  • a container which is in open connection with the insulation volume 5.
  • the container which for example may be made as a surrounding funnel or be arranged at one side of the top of the chimney, is filled up with a supply of insulating material which gradually flows down into the insulation space as the existing material there is reduced in volume.
  • the container is filled up with insulating material when required.
  • the chimney may be installed without a surrounding shaft. It may wholly or partially be prefabricated at a factory, which is preferred in case of new buildings, while by rebuilding and replacement of old chimneys it is also possible to manufacture the jacket as sections of desired length. The are put in position and the flue is then inserted and insulating material is filled in.
  • the outer jacket is made as sections which are that much longer than the sections of the inner jacket as corresponds to the size of the desired slots between the sections of the inner jacket. At the assembly it is preferred to make use of joint sleeves with insulating material so that a sealed outer jacket is obtained.
  • Chimney according to the invention also brings further advantages with it.
  • the low-weight and steady design means that the chimney may be raised on existing framing of joists without reinforcements and the structure is self-supporting also at sidewise deflecting design. Compared to previously known designs also the problem with noise that is generated at the changes of length of the material is reduced. Control and inspection is made easier as the installation is well visible and all joints may be positioned so that they are readily available for inspection.
  • the chimney may be adapted to various conditions of use and more than one flue may be installed in one and the same jacket. At change of hearth or method of heating, e. g. changing oil to logs, the flue may be exchanged so that the best condition also are obtained.
  • the chimney according to the invention further has the important advantage that there is smaller decrease of the temperature of the flue gas than is the case with hereto known chimney designs for corresponding applications and uses.
  • the reduced decrease of the drop of the temperature may be utilised either to to lower the temperature of the output gas from the hearth and so achieve a higher efficiency thereof or to achieve a higher temperature of the flue gases out from the chimney. It is a further advantage that at start up the initially cold chimney quickly reaches a steady state temperature both of the flue and the outer jacket.
  • Both the flue and the surrounding jacket may have cross sections which are different from circular, primarily elliptic or rectangular shapes are possible.
  • the flue may be a smooth tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chimneys And Flues (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Exhaust Silencers (AREA)
EP00850196A 1999-11-24 2000-11-17 Chimney Expired - Lifetime EP1103763B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9904246 1999-11-24
SE9904246A SE522196C2 (sv) 1999-11-24 1999-11-24 Skorsten med rökgaskanal av flexibelt stålrör och en omgivande mantel samt isolerande material

Publications (2)

Publication Number Publication Date
EP1103763A1 EP1103763A1 (en) 2001-05-30
EP1103763B1 true EP1103763B1 (en) 2004-06-16

Family

ID=20417832

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00850196A Expired - Lifetime EP1103763B1 (en) 1999-11-24 2000-11-17 Chimney

Country Status (5)

Country Link
EP (1) EP1103763B1 (sv)
AT (1) ATE269514T1 (sv)
DE (1) DE60011552T2 (sv)
NO (1) NO316654B1 (sv)
SE (1) SE522196C2 (sv)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2457470A (en) * 1945-12-05 1948-12-28 Ernest O Howle Insulated chimney
US2457471A (en) * 1945-12-05 1948-12-28 Ernest O Howle Chimney construction
GB1032469A (en) * 1963-12-23 1966-06-08 Max Beaumont Improvements in or relating to insulated chimneys and flues
SE302350B (sv) * 1966-11-18 1968-07-15 Rosengrens Plat Ab
DE2016520A1 (de) * 1970-04-02 1971-10-21 Verfahren und Vorrichtung zur Behandlung und zum Verengen von Schornsteinen. Anmj Kutter, Gerhard, 1000 Berlin
GB2336893A (en) * 1998-04-30 1999-11-03 John Trevor Garrod Flue ducting for atmospheric boilers

Also Published As

Publication number Publication date
SE9904246D0 (sv) 1999-11-24
NO316654B1 (no) 2004-03-22
NO20005853D0 (no) 2000-11-20
DE60011552D1 (de) 2004-07-22
SE9904246L (sv) 2001-05-25
EP1103763A1 (en) 2001-05-30
NO20005853L (no) 2001-05-25
ATE269514T1 (de) 2004-07-15
DE60011552T2 (de) 2005-08-25
SE522196C2 (sv) 2004-01-20

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