EP0090518A1 - Module d'isolation thermique - Google Patents

Module d'isolation thermique Download PDF

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Publication number
EP0090518A1
EP0090518A1 EP83301228A EP83301228A EP0090518A1 EP 0090518 A1 EP0090518 A1 EP 0090518A1 EP 83301228 A EP83301228 A EP 83301228A EP 83301228 A EP83301228 A EP 83301228A EP 0090518 A1 EP0090518 A1 EP 0090518A1
Authority
EP
European Patent Office
Prior art keywords
strips
block
retaining means
thermally insulating
low thermal
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
Application number
EP83301228A
Other languages
German (de)
English (en)
Other versions
EP0090518B1 (fr
Inventor
Melvyn Alan Watkins
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.)
FUEL CONSERVATION SERVICES Ltd
Original Assignee
FUEL CONSERVATION SERVICES Ltd
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 FUEL CONSERVATION SERVICES Ltd filed Critical FUEL CONSERVATION SERVICES Ltd
Priority to AT83301228T priority Critical patent/ATE20496T1/de
Publication of EP0090518A1 publication Critical patent/EP0090518A1/fr
Application granted granted Critical
Publication of EP0090518B1 publication Critical patent/EP0090518B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
    • F27D1/0009—Comprising ceramic fibre elements
    • F27D1/0013—Comprising ceramic fibre elements the fibre elements being in the form of a folded blanket or a juxtaposition of folded blankets

Definitions

  • This invention relates to thermally insulating blocks for use in lining the roofs, walls, floors, doors and ducting in furnaces, kilns, ovens and the like.
  • a known furnace lining comprises an inner layer of a plurality of thermally insulating blocks each formed from individual rectangular strips of low thermal mass material stacked adjacent one another and wrapped, under compression, in cotton or other scrim cloth which burns up when the blocks are first used.
  • thermally insulating block A disadvantage associated with this known form of thermally insulating block is that the cotton or other scrim cloth is under tension, when wrapped around the block to retain the low thermal mass strips under compression, which does not permit sufficient flexing of the block when it is being secured to a curved or uneven surface of an inner wall of a furnace,kiln, oven or the like. Another disadvantage is that the cotton or other scrim cloth burns up when the block is first used, thereby eliminating or at least substantially reducing the compressive forces holding the low thermal mass strips together, thus resulting in the eventual break-up of the block.
  • the present invention sets out to eliminate, or at least substantially avoid, these disadvantages associated with known thermally insulating blocks by providing, in accordance with one aspect thereof, a thermally insulating block comprising a plurality of strips of a low thermal mass material which are secured together, under compression and in side-by-side relationship, by retaining means which is capable of withstanding the operating temperature of a furnace, kiln, oven or the like in which the block is used as at least part of an inner lining thereof.
  • said retaining means is flexible, in which case, it may be in the form of a thread or cord made from the same low thermal mass material as that of the strips.
  • Such flexible thread or cord may extend around the exterior of the block, to retain the strips under compression and in side-by-side relationship, or may be threaded transversely, in a back and forward fashion, through the compressed strips, as long as the thread or cord is capable of withstanding the operating temperature of a furnace, kiln, oven or the like in which the block is installed as at least part of the inner liner thereof.
  • said retaining means may be in the form of at least one "skewer" passing transversely through the compressed and side-by-side low thermal mass strips, such a skewer preferably being made of a metallic material which can withstand the operating temperature of the furnace, kiln, oven or the like.
  • the low thermal mass material, from which the strips are made is a refractory fibre of alumina and silica suitable for continuous exposure to operating temperatures of 1260°C (2300°F).
  • a suitable material for operating at a higher temperature of, say, 1425°C (2600°F) is a fibrous refractory material of an alumina, silica and chromia composition.
  • said retaining means, and preferably when in the form of a thread or cord, can also be made of either fibrous refractory material.
  • the strips are U-shaped, thereby providing a block with one of its major surfaces corrugated and the other, planar.
  • a method of manufacturing a thermally insulating block comprising the steps of arranging a plurality of strips of low thermal mass material in side-by-side relationship, transversely compressing the strips together, and maintaining the so-compressed strips under compression with retaining means which is capable of withstanding the operating temperature of a furnace, kiln, oven or the like in which the manufactured block is used as at least part of an inner lining thereof.
  • the transverse compressing and maintaining under compression steps may precede the corrugation truncating step.
  • thermally insulating blocks in accordance with the invention or when made by a method in accordance therewith, can be secured to the inner surfaces of, say, a furnace, by cementing one of the major surfaces thereof and then pressing this surface against the furnace wall in the required position.
  • the corrugated block having U-shaped strips it is the planar major surface which is preferably secured to the internal surface of the furnace wall.
  • thermally insulating block in accordance with the invention as well as its inventive method of manufacture, will now be described by way of example and with reference to the accompanying drawing which shows a perspective view of the block.
  • a thermally insulating block 1 for use in lining the inner surfaces of a furnace wall, comprises a plurality of U-shaped strips 2 of a low thermal mass material which are secured together under compression by a retaining thread 3.
  • This retaining thread 3 passes along the outside surface of the U-shaped strip 2 at the left hand side of the block 1, through the block at four positions transversely with respect thereto, and along two portions of the outer surface of the U-shaped strip at the right hand end of the block.
  • the thread 3 retains the strips 2 under transverse compression and it is to be understood that any other suitable form of retaining means, such as, at least one transverse rod, may be used instead of the thread 3, as long as it is capable of withstanding the operating temperature of the furnace.
  • a scrim cloth of the same material as that from which the strips 2 are made is wrapped around the block, preferably leaving the opposed end faces of the U-shaped strips 2 exposed. Such wrapping can be adhesively secured to the block 1.
  • a single layer of low thermal mass material such as either of those described above and capable of withstanding respective operating temperatures of 1260°C (2300°F) and 1425°C (2600°F)
  • 1260°C (2300°F) and 1425°C (2600°F) has been folded to form an intermediate corrugated block.
  • One major face of the intermediate block has then had its corrugations truncated, thereby forming the plurality of side-by-side, generally U-shaped strips 2 which are subsequently subjected to a transverse compressional force.
  • this truncation step may follow the compression and retaining steps.
  • the thread 3 passes transversely through the strips 2 and is secured in a suitable manner to maintain the block 1 under compression.
  • Such a block 1 could also be made by forming two or more intermediate blocks, of equal thickness, which may then be secured together in side-by-side relationship under compression.
  • each block 1 can then be fixed to the internal surface of a furnace wall by cementing the planar, truncated face thereto.
  • the transversely compressing and maintaining under compression steps can be formed simultaneously, and preferably when the retaining means is in the form of a flexible thread or cord passing transveresely through the side-by-side strips, whereby tightening or tensioning of the thread or cord 3 actually compresses the strips together and, then, subsequently retains them in the compressed state.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Saccharide Compounds (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Building Environments (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP83301228A 1982-03-27 1983-03-08 Module d'isolation thermique Expired EP0090518B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83301228T ATE20496T1 (de) 1982-03-27 1983-03-08 Waermeisolierungsmodul.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8209080 1982-03-27
GB8209080 1982-03-27

Publications (2)

Publication Number Publication Date
EP0090518A1 true EP0090518A1 (fr) 1983-10-05
EP0090518B1 EP0090518B1 (fr) 1986-06-18

Family

ID=10529341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83301228A Expired EP0090518B1 (fr) 1982-03-27 1983-03-08 Module d'isolation thermique

Country Status (4)

Country Link
EP (1) EP0090518B1 (fr)
AT (1) ATE20496T1 (fr)
DE (1) DE3364133D1 (fr)
GB (1) GB2117877B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4119990A1 (de) * 1991-06-18 1992-12-24 Forsch Anorganische Werkstoffe Verbundplatte

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190167B (en) * 1986-05-09 1990-05-09 Thomas James Twort Furnace pipe insulation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3819468A (en) * 1971-06-28 1974-06-25 Sander Ind Inc High temperature insulation module
US3832815A (en) * 1973-01-29 1974-09-03 Flinn & Dreffein Eng Co Modular insulation of fibrous material
GB2004626A (en) * 1977-09-22 1979-04-04 Studweldpro Uk Ltd Insulation Materials
FR2454071A1 (fr) * 1979-04-13 1980-11-07 Heattreatment Advising Cy Nv Four dont la paroi contient des lames de materiau ceramique fibreux pressees les unes contre les autres, notamment pour la cuisson de briques
GB2070748A (en) * 1980-03-04 1981-09-09 Ductile Hot Mill Ltd Panel for a furnace wall structure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1038498A (en) * 1963-08-13 1966-08-10 Steetley Refractory Brick Comp Improvements in or relating to refractory units for use in lining metallurgical furnaces
GB1545842A (en) * 1976-03-17 1979-05-16 Johns Manville Furnace lining apparatus
GB2004039B (en) * 1977-05-13 1982-01-20 Clinotherm Ltd Furnaces and ovens
US4339902A (en) * 1980-06-30 1982-07-20 Manville Service Corporation Multiple layer thermal insulation device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3819468A (en) * 1971-06-28 1974-06-25 Sander Ind Inc High temperature insulation module
US3832815A (en) * 1973-01-29 1974-09-03 Flinn & Dreffein Eng Co Modular insulation of fibrous material
GB2004626A (en) * 1977-09-22 1979-04-04 Studweldpro Uk Ltd Insulation Materials
FR2454071A1 (fr) * 1979-04-13 1980-11-07 Heattreatment Advising Cy Nv Four dont la paroi contient des lames de materiau ceramique fibreux pressees les unes contre les autres, notamment pour la cuisson de briques
GB2070748A (en) * 1980-03-04 1981-09-09 Ductile Hot Mill Ltd Panel for a furnace wall structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4119990A1 (de) * 1991-06-18 1992-12-24 Forsch Anorganische Werkstoffe Verbundplatte

Also Published As

Publication number Publication date
GB2117877B (en) 1985-05-09
EP0090518B1 (fr) 1986-06-18
ATE20496T1 (de) 1986-07-15
GB8302934D0 (en) 1983-03-09
GB2117877A (en) 1983-10-19
DE3364133D1 (en) 1986-07-24

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