PT101178B - Corpo retentor de calor para isolamento termico - Google Patents

Corpo retentor de calor para isolamento termico Download PDF

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Publication number
PT101178B
PT101178B PT101178A PT10117893A PT101178B PT 101178 B PT101178 B PT 101178B PT 101178 A PT101178 A PT 101178A PT 10117893 A PT10117893 A PT 10117893A PT 101178 B PT101178 B PT 101178B
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PT
Portugal
Prior art keywords
thermal insulation
panels
pressure
resistant
defined form
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PT101178A
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English (en)
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PT101178A (pt
Inventor
Ekkehard Nowara
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Thyssen Nordseewerke Gmbh
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Priority claimed from DE4214002A external-priority patent/DE4214002C2/de
Application filed by Thyssen Nordseewerke Gmbh filed Critical Thyssen Nordseewerke Gmbh
Publication of PT101178A publication Critical patent/PT101178A/pt
Publication of PT101178B publication Critical patent/PT101178B/pt

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped
    • E04B1/806—Heat insulating elements slab-shaped with air or gas pockets included in the slab
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2607/00—Walls, panels
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B2001/742—Use of special materials; Materials having special structures or shape
    • E04B2001/748—Honeycomb materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/234—Sheet including cover or casing including elements cooperating to form cells
    • Y10T428/236—Honeycomb type cells extend perpendicularly to nonthickness layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/237—Noninterengaged fibered material encased [e.g., mat, batt, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/239—Complete cover or casing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24174—Structurally defined web or sheet [e.g., overall dimension, etc.] including sheet or component perpendicular to plane of web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612—Composite web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24694—Parallel corrugations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249971—Preformed hollow element-containing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249981—Plural void-containing components

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  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Thermal Insulation (AREA)
  • Laminated Bodies (AREA)
  • Building Environments (AREA)
  • Bipolar Transistors (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Joining Of Glass To Other Materials (AREA)

Description

MEMÓRIA DESCRITIVA
O invento refere-se a um corpo com forma definida de isolamento térmico.
É, de modo geral, conhecido o princípio de isolamento dos recipientes Dewar, o qual é baseado na colocação em vácuo de um espaço oco, estanque a gases e selável. Além disso, as paredes destes recipientes são, em regra espelhadas, a fim de minimizar a transmissão térmica por irradiação.
São conhecidos a partir de EP-1064006 corpos com forma definida de isolamento térmico, feitos com base em material de isolamento térmico prensado e microporoso. Em alguns casos, o corpo com forma definida foi total ou parcialmente coberto por um invólucro estanque aos gases, e a pressão dentro do invólucro reduzida para, pelo menos, 20 mbar. Além disso, é conhecida a utilização de uma película compósita de um material termoplástico e uma camada metálica num lado como o material de invólucro.
Além disso, é conhecida a partir de DE-2615299 a produção de um recipiente para estes tipos de corpos com forma definida isoladores de calor a partir de uma película fina de metal e fazer a ligação entre a película da base e a película de cobertura por meio de películas finas de metal com flanges. Em DE-3630399 é proposto o mesmo tipo de abordagem.
DE-3108810 refere-se a um isolamento expansível elasticamente, que compreende painéis com as suas superfícies laterais, dispostas em pares paralelos entre si e de tiras de um material de isolamento térmico, as quais são deformáveis elasticamente apenas numa direcção e as quais são ligada por adesivo entre si e aos painéis pelas suas superfícies de contacto.
Em GB730127 é descrito um painel de isolamento térmico, que compreende uma parede de metal espessa uma parede mais fina,
& 739
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-2substancialmente paralela e espaçada, que engata na anterior de modo hermético a gases e que contém uma manta de fibras minerais de isolamento no espaço entre as duas paredes, sendo feito vácuo no dito espaço.
Em US 4 486 482 é descrito um isolador térmico sob vácuo, que compreende um receptáculo, definido por chapas de metal finas, tendo cada uma delas uma porção plana, que proporciona as paredes opostas do receptáculo, e uma pilha de fibras de vidro, contidas no dito receptáculo, estando a maioria das fibras na dita pilha, dispostas de modo aleatório numa direcção paralela às ditas paredes e perpendicular a uma direcção de transferência de calor e estando o interior do dito receptáculo sob vácuo, ficando a pilha de fibras de vidro num estado comprimido, de modo a proporcionar uma pilha de fibras de alta densidade seguras entre si, pelo que a deformação das paredes para dentro devida à aplicação de vácuo ao receptáculo é sustida pela pilha de fibras.
Todos os corpos com forma definida de isolamento térmico conhecidos apresentam a desvantagem de que os mesmos são muito difíceis de fabricar ou que os requesitos de pressão e rigidez desejados não serem completamente satisfeitos.
Foi, por conseguinte, o objectivo do invento ultrapassar estas desvantagens e criar um corpo com forma definida de isoamento térmico, o qual é simples de fabricar, mas que apesar disso satisfaz os requesitos.
O objecto do invento é conseguido de acordo com a reivindicação 1.
A disposição do invento, pela qual, pelo menos, dois painéis são dispostos um no topo do outro, com, pelo menos, um plano espaçador resistente à pressão, proporcionado entre quaisquer dois painéis melhora o isolamento, a estabilidade e a rigidez torsional do corpo.
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-30 plano espaçador deve ser, pelo menos, tão resistente à pressão como os respectivos painéis. Para este fim são preferidos planos espaçadores de plástico com a forma de placas de rede duplas, em que a rede é proposta com formas variadas. É, no entanto possível, que o plano espaçador seja feito de material em forma de favos de mel perfurados. Em relação à conveniência de ser posto sob vácuo o corpo com forma definida de isolamento térmico, é também considerada a perfuração do plano de espaçador. Um tal plano de espaçador pode absorver a maior parte do volume de um isolamento térmico. As redes espaçador devem ser empregues manter a condução térmica baixa de reflexão e perfurada, ou ur também ser montados aqui, a fim corpo com forma definida de de suporte de tais planos de em pequenos números, a fim de . Um invólucro com uma película i revestimento reflector podem de minimizar a contribuição da irradiação para a transferência de calor, como foi proposto para os painéis.
Numa concretização do invento, é proposta que a prensagem das microfibras de vidro num forma de painel, seja realizada sem o emprego de um material ligante. Retém-se assim um painel, o qual tem poros abertos, tornando, por conseguinte, a colocação sob vácuo do corpo com forma definida de isolamento térmico consideravelmente mais fácil. Além disso, relativamente à compatibilidade ambiental, deve ser notado que o painel sem material de ligação pode ser de novo totalmente sujeito a um processo de reciclagem. 0 mesmo pode também ser processado de modo que o mesmo tenha aplicação num novo corpo isolador com uma outra forma espacial.
A fim de manter uma optimização entre rigidez e condutibilidade térmica, são utilizados objectivamente diferentes diâmetros e comprimentos de fibras. Com esta condição prévia, as microfibras de vidro devem principalmente ter diâmetros na gama de d-^ = 0,1 x 10-3 mm, a d2 = 8 x 10'3 mm.
Por conseguinte, os comprimentos das fibras devem situar-se principalmente entre 0,04 mm e 6 mm. É também possível a
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-4utilização de microfibras de vidro fora das gamas de diâmetros e comprimentos referida atrás, mas tal conduz a uma deterioração da rigidez e/ou a condutibilidade térmica.
Para se tirar vantagem das propriedades benéficas de reflexão dos infravermelhos (IR) das películas reflectoras, ainda que as superfícies laterais dos painéis sejam equipadas com películas reflectoras perfuradas. A perfuração das películas é necessária a fim de não se perder as propriedades de colocação sob vácuo vantajosas do corpo com forma definida de isolamento térmico conseguidas a partir da natureza com poros abertos dos seus painéis.
Com os corpos de forma definida de isolamento térmico, de acordo com o invento, é possível fabricar peças pré-formadas com qualquer forma desejada. Como formas possíveis admitem-se elementos planos em painel com formas planas e curvas, tubos, caixas de construção integral, etc.
invento vai agora ser descrito utilizando as concretizações exemplificativas representadas no o qual mostra:
na fig. 1 um corpo com forma definida de isolamento térmico com dois painéis e um plano espaçador localizado entre os dois painéis;
na fig. 2 um corpo com forma definida de isolamento térmico com dois painéis e dois planos espaçadores localizados entre os dois painéis.
Nas figs. 1 e 2 as mesmas partes estão indicadas com os mesmos números de referência. As figuras mostram inteiramente um corpo com forma definida de isolamento térmico 8, que compreende um invólucro 1, com os suportes de evacuação 7, os painéis 4 e a película reflectora perfurada 2, colocada entre os painéis 4 e o invólucro 1. Com o número 3 estão indicadas as superfícies de extremidade de má condutibilidade térmica do corpo com forma
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-5definida de isolamento térmico 8.
Na figura 1 são porporcionados dois painéis 4, 4', entre os quais se encontra um plano espaçador resistente à pressão, com entrançados 6. Entre o plano espaçador 5 e os painéis 4, 4' é também proporcionada uma película reflectora perfurada 9.
Na figura 2 está ainda previsto um plano espaçador adicional 5' com entrançados 6'. Este plano espaçador duplo serve para economizar ainda o peso, bem como para uma rigidez adicional do corpo de forma definida de isolamento térmico 8.

Claims (6)

  1. REIVINDICAÇÕES
    1 - Corpo com forma definida de isolamento térmico, para isolamento térmico, que compreende:
    pelo menos, dois painéis (4, 4') feitos de material de isolamento térmico microporoso de microfibras de vidro, resistentes à pressão, curadas e finamente fibrosas, sendo cada painel formado com a sua forma definida de painel num passo de compressão por prensagem;
    pelo menos, um plano espaçador resistente à pressão (5), o qual é proporcionado entre cada dois painéis (4, 4'), de modo que, pelo menos, os dois painéis (4, 4') e o, pelo menos, um
    plano espaçador resistente à pressão (5) formam uma estrutura em sanduíche (4, 5, 4' ) ; pelo menos, um invólucro (1), o qual envolve a estrutura em sanduíche (4, 5, 4 ' ) e o qual pode ser colocado sob vácuo,
    caracterizado por o invólucro ser composto por material de má condutibilidade térmica, pelo menos, nas suas superfícies de bordo nos bordos laterais da estrutura em sanduíche.
  2. 2 - Corpo com forma definida de isolamento térmico de acordo com a reivindicação 1, caracterizado por a prensagem do material de isolamento térmico microporoso na sua forma de painel (4) ser realizada sem a utilização de um agente ligante.
  3. 3 - Corpo com forma definida de isolamento térmico de acordo com as reivindicações 1 e 2, caracterizado por o material de isolamento térmico ser composto por uma mistura de microfibras de vidro finamente fibrosas com diâmetros e comprimentos de fibras diferentes.
  4. 4 - Corpo com forma definida de isolamento térmico de acordo com as reivindicações 1 a 3, caracterizado por as superfícies laterais do painéis (4, 4') terem montadas películas
    VR20/5075
    2/2 perfuradas reflectoras (2) ou um revestimento reflector.
  5. 5 - Corpo com forma definida de isolamento térmico de acordo com uma das reivindicações anteriores, caracterizado por o, pelo menos, um plano separador resistente à pressão (5) compreender, pelo menos, dois planos espaçadores resistentes à pressão (5, 5'), que têm placas perfuradas confrontantes com redes formados de modo diferente (6, 5') .
  6. 6 - Corpo com forma definida de isolamento térmico de acordo com a reivindicação 5, caracterizado por o plano separador resistente à pressão (5) consistir num material em forma de favos de mel perfurado.
PT101178A 1992-01-18 1993-01-18 Corpo retentor de calor para isolamento termico PT101178B (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4201250 1992-01-18
DE4214002A DE4214002C2 (de) 1992-01-18 1992-04-29 Wärmedämmformkörper zur Wärmeisolierung

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PT101178A PT101178A (pt) 1994-05-31
PT101178B true PT101178B (pt) 1999-12-31

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FR (1) FR2686392A1 (pt)
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NL (1) NL194869C (pt)
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Publication number Publication date
FR2686392A1 (fr) 1993-07-23
CA2087499A1 (en) 1993-07-19
US5399408A (en) 1995-03-21
DK5293D0 (da) 1993-01-18
FI930175A (fi) 1993-07-19
NL194869C (nl) 2003-05-06
FR2686392B1 (pt) 1995-02-24
SE507295C2 (sv) 1998-05-11
GB2266758A (en) 1993-11-10
NO930125L (no) 1993-07-19
SE9300074D0 (sv) 1993-01-13
NO930125D0 (no) 1993-01-14
US5718096A (en) 1998-02-17
BE1006546A3 (fr) 1994-10-11
DK174605B1 (da) 2003-07-21
NL194869B (nl) 2003-01-06
FI104651B (fi) 2000-03-15
NL9300090A (nl) 1993-08-16
CA2087499C (en) 1999-04-20
NO180184B (no) 1996-11-25
PT101178A (pt) 1994-05-31
GB2266758B (en) 1995-09-20
ITMI930051A0 (it) 1993-01-15
IT1263741B (it) 1996-08-27
NO180184C (no) 1997-03-05
GB9300713D0 (en) 1993-03-03
ITMI930051A1 (it) 1994-07-15
DK5293A (da) 1993-07-19
SE9300074L (sv) 1993-07-19
FI930175A0 (fi) 1993-01-15

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