JPH0462379A - Heat-insulated box - Google Patents
Heat-insulated boxInfo
- Publication number
- JPH0462379A JPH0462379A JP17004690A JP17004690A JPH0462379A JP H0462379 A JPH0462379 A JP H0462379A JP 17004690 A JP17004690 A JP 17004690A JP 17004690 A JP17004690 A JP 17004690A JP H0462379 A JPH0462379 A JP H0462379A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- box
- pack
- vacuum
- polyol
- 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.)
- Pending
Links
- 239000011888 foil Substances 0.000 claims abstract description 34
- 239000006260 foam Substances 0.000 claims abstract description 19
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 15
- 239000010935 stainless steel Substances 0.000 claims abstract description 15
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920003023 plastic Polymers 0.000 claims abstract description 10
- 239000004033 plastic Substances 0.000 claims abstract description 10
- 229920005862 polyol Polymers 0.000 claims abstract description 7
- 150000003077 polyols Chemical class 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000012948 isocyanate Substances 0.000 claims abstract description 6
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 6
- 239000007809 chemical reaction catalyst Substances 0.000 claims abstract description 5
- 239000003381 stabilizer Substances 0.000 claims abstract description 5
- 239000011810 insulating material Substances 0.000 claims abstract description 3
- 238000009413 insulation Methods 0.000 claims description 39
- 239000004604 Blowing Agent Substances 0.000 claims description 9
- 239000012611 container material Substances 0.000 claims description 9
- 239000005001 laminate film Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 abstract description 9
- 238000005187 foaming Methods 0.000 abstract description 6
- 239000011347 resin Substances 0.000 abstract description 5
- 229920005989 resin Polymers 0.000 abstract description 5
- 239000004088 foaming agent Substances 0.000 abstract description 4
- 238000010097 foam moulding Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 3
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical group FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000002650 laminated plastic Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011550 stock solution Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 229920001038 ethylene copolymer Polymers 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000002085 persistent effect Effects 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- OMRRUNXAWXNVFW-UHFFFAOYSA-N fluoridochlorine Chemical compound ClF OMRRUNXAWXNVFW-UHFFFAOYSA-N 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000005437 stratosphere Substances 0.000 description 1
- 229940029284 trichlorofluoromethane Drugs 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2201/00—Insulation
- F25D2201/10—Insulation with respect to heat
- F25D2201/14—Insulation with respect to heat using subatmospheric pressure
Landscapes
- Refrigerator Housings (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は断熱箱体に係り、特に、断熱壁に真空断熱パッ
クと硬質ウレタンフオームを充填してなる断熱箱体に関
する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a heat insulating box, and particularly to a heat insulating box whose heat insulating walls are filled with a vacuum heat insulating pack and a hard urethane foam.
従来、冷蔵庫用断熱箱体等の断熱壁は外箱と内箱を組合
せた空間部に硬質ポリウレタンフォームを充填した断熱
箱体としている。この硬質ポリウレタンフォームに使用
している発砲剤はトリクロロモノフルオロメタン（Ｒ，
−１１）を使用している。Conventionally, the heat insulating wall of a heat insulating box for a refrigerator or the like is a heat insulating box in which a space formed by combining an outer box and an inner box is filled with rigid polyurethane foam. The blowing agent used in this rigid polyurethane foam is trichloromonofluoromethane (R,
-11) is used.
しかし、Ｒ−１１は難分解性ＣＦ Ｃ（Ｃｈｌｏｒｏ
Ｆｌｕｏｒ。However, R-11 is made of persistent CF C (Chloro
Fluor.
Ｃａｒｂｏｎの略）の一つであり、通称フロンと呼ばれ
ているが、二〇ＣＦＣが大気中に放出されると成層圏に
おけるオゾン層破壊や温室効果による地表温度上昇が生
じるとされ、近年、世界的な環境汚染問題となり、これ
らの難分解性ＣＦＣの生産、及び、消費を規制する動き
が高まっている、そのため従来の硬質ポリウレタンの生
産量が規制されることにもなりＣＦＣを用いる断熱箱体
の生産もままならなくない状況にある。そこで、ＣＦＣ
の代替品として易分解性であるＨ ＣＦ Ｃ（）ｌｙｄ
Ｏｒｏ。Carbon (abbreviation), commonly known as CFCs, is said to cause depletion of the ozone layer in the stratosphere and rise in ground temperature due to the greenhouse effect when released into the atmosphere. This has become an environmental pollution problem, and there is a growing movement to regulate the production and consumption of these persistent CFCs.As a result, the production volume of conventional rigid polyurethane will be regulated, and insulation boxes using CFCs will be The situation is such that production is not going anywhere. Therefore, C.F.C.
HCF C()lyd, which is easily degradable as a substitute for
Oro.
Ｃｈｌｏｒｏ、Ｆｌｕｏｒｏ Ｃａｒｂｏｎの略）が有
望であり、その中でもＲ−１２３が最有力な代替候補で
ある。しかし、Ｒ−１２３ガスはＲ−１１に比較して熱
伝導率が大きく断熱材とした場合に性能が劣ることにな
る。Chloro (abbreviation for Fluoro Carbon) is promising, and among them, R-123 is the most promising alternative candidate. However, R-123 gas has a higher thermal conductivity than R-11, and when used as a heat insulating material, its performance is inferior.
さらに、Ｒ−１２３を発泡剤に用いる場合、水も補助発
泡剤として用いるが、水とイソシアネートが反応して生
じるＣＯ□ガスもＲ−１１に比較し熱伝導率が大きいた
め、断熱性能が劣る。そこで断熱性能に非常に優れた真
空断熱パックとウレタンフオームとを組合せることによ
り、断熱性能をＲ−１１を用いたフオームの性能を維持
、あるいは超えることができるものである。しかし、Ｒ
−１２３は易分解性であるため、空気中の水分と反応し
加水分解を起こし塩素ガスを発生しやすく、又塩素は真
空断熱パックの容器材の一部として従来用いていたアル
ミニウム箔を腐食させる問題があった。アルミニウム箔
はガスバリヤ性材料として用いるもので腐食されるとガ
ス透過量が多くなる欠点があった。Furthermore, when R-123 is used as a blowing agent, water is also used as an auxiliary blowing agent, but the CO□ gas produced by the reaction between water and isocyanate also has a higher thermal conductivity than R-11, so its insulation performance is inferior. . Therefore, by combining a vacuum insulation pack with extremely excellent heat insulation performance and urethane foam, the heat insulation performance can be maintained or exceeded that of the foam using R-11. However, R
-123 is easily decomposed, so it reacts with moisture in the air and easily hydrolyzes, producing chlorine gas. Also, chlorine corrodes the aluminum foil conventionally used as part of the container material for vacuum insulation packs. There was a problem. Aluminum foil is used as a gas barrier material and has the disadvantage that when corroded, the amount of gas permeation increases.
又、アルミニウムは熱伝導率が非常に大きく、ヒートブ
リッジ量が大きく、これを用いた真空断熱パックは周囲
からの熱伝導が大きく全体の断熱性能が劣る。又、これ
を防ぐためアルミニウム膜が非常に薄い、プラスチック
にアルミニウムを蒸着したフィルムを用いる場合もある
が、アルミニウムの厚さ０．０５μｍでピンホールが生
じやすく、これはガスバリヤ性が劣りガスが透過しやす
く真空が長期間維持できない欠点があった。なお、この
種の断熱箱体に関するものとして、例えば、特開昭５８
−１２７０８４号公報、特開昭５Ｌ５２１８４号公報が
あげられる。Furthermore, aluminum has a very high thermal conductivity and a large amount of heat bridge, and a vacuum insulation pack using this material has a large heat conduction from the surroundings and has poor overall insulation performance. In addition, to prevent this, a very thin aluminum film, such as a film made by vapor-depositing aluminum on plastic, is sometimes used, but the 0.05 μm thickness of aluminum tends to cause pinholes, which means that the gas barrier properties are poor and gas permeates. The drawback was that the vacuum could not be maintained for a long period of time. Regarding this type of heat insulating box, for example, Japanese Patent Application Laid-Open No. 58
-127084 and JP-A-5L52184.
上記従来技術である真空断熱パックの容器材はアルミニ
ウムの蒸着プラスチックフィルム、あるいは、アルミニ
ウム箔とプラスチックのラミネートフィルム等であり、
前者はガスバリヤ性が劣り後者はヒートブリッジが大で
ある欠点があり、さらに、硬質ウレタンフオームの発泡
剤に水およびＲ−１２３を用いた場合、Ｒ−１２３が空
気中の水分により加水分解を起しやすく、これにより発
生する塩素によりアルミニウムが腐食され真空度維持期
間が短縮されてしまう問題があった。The container material of the vacuum insulation pack according to the prior art is an aluminum vapor-deposited plastic film, or a laminate film of aluminum foil and plastic, etc.
The former has the disadvantage of poor gas barrier properties, and the latter has the disadvantage of large heat bridges.Furthermore, when water and R-123 are used as blowing agents for rigid urethane foam, R-123 may be hydrolyzed by moisture in the air. There was a problem in that the chlorine generated thereby corroded the aluminum and shortened the vacuum maintenance period.
本発明の目的は真空断熱バッグ用容器材としてガスバリ
ヤ性に優れ、ヒートブリッジが少なく、ＨＣＦＣである
Ｒ−１２３を用いた硬質ウレタンフオームと組合せても
腐食されることなく真空断熱パックの断熱性能を充分発
揮し、長期間維持させる断熱箱体を提供することにある
。The purpose of the present invention is to provide a container material for vacuum insulation bags that has excellent gas barrier properties, has few heat bridges, and does not corrode even when combined with hard urethane foam using R-123, which is an HCFC, and improves the insulation performance of vacuum insulation packs. The purpose is to provide a heat insulating box body that provides sufficient performance and is maintained for a long period of time.
上記目的を達成するためガスバリヤの優れた膜は金属箔
であるが熱伝導率の小さい材料でなくてはならない。そ
こで、鉛およびステンレスチール（ＳＯ３−３０４）箔
を用いることで、熱伝導率は鉛がアルミニウムの約７、
ステンレススチールは約百であり、両者ともＲ−１２３
の加水分解生成物である塩素ガスに非常に強い。しかし
、金属箔のみでは真空断熱パック用容器とするための溶
接が難しいため内側にプラスチックフィルムをラミネー
トすることにより、従来と同様、熱加圧溶着で接着がで
きるようにしたものである。In order to achieve the above objective, a film with an excellent gas barrier is a metal foil, which must be made of a material with low thermal conductivity. Therefore, by using lead and stainless steel (SO3-304) foil, lead has a thermal conductivity of about 7 compared to aluminum.
Stainless steel is about 100, and both are R-123
Very resistant to chlorine gas, a hydrolysis product of However, it is difficult to weld metal foil alone to make a container for vacuum insulation packs, so by laminating a plastic film on the inside, it can be bonded using heat and pressure welding as in the past.
しかし、ステンレス箔および鉛箔が２０μｍ以下の厚さ
でないとヒートブリッジが大きくなり、本発明の性能が
充分発揮できないが、従来５０μｍ以下の箔を作成する
ことは冷間圧延の際、加工硬化を生じ展延性が小さく技
術的に不可能であった。However, unless the stainless steel foil and lead foil have a thickness of 20 μm or less, heat bridges will increase and the performance of the present invention cannot be fully demonstrated. This was technically impossible due to the low spreadability.
そこで５０μｍの箔を焼鈍処理を行い、これをさらに２
０μｍ以下に冷間圧延加工することにより可能としたも
のである。Therefore, a 50μm foil was annealed, and this was further annealed for 2
This is made possible by cold rolling to a thickness of 0 μm or less.
又、従来のアルミニウムとポリエチレンフィルムを接着
してラミネート化する接着剤は、ポリウレタン系溶剤型
の接着剤を用いていたが、ステンレス箔とポリエチレン
フィルムとの接着は従来の方法ではステンレスの方に接
着力が弱く、新に酢酸ビニル・エチレン共重合体系接着
を見出すことで、ステンレス箔・ポリエチレンフィルム
のラミネート化が可能となった。In addition, conventional adhesives used to bond and laminate aluminum and polyethylene film were polyurethane-based solvent-based adhesives, but conventional methods for adhering stainless steel foil and polyethylene film adhered to the stainless steel By discovering a new adhesive based on vinyl acetate and ethylene copolymer, it has become possible to laminate stainless steel foil and polyethylene film.
硬質ウレタンフオームは断熱箱体を構成する外箱と内箱
からなる空間部に真空断熱パックと共に充填され断熱効
果を果す。さらに、外箱と内箱に接着し箱体強度を向上
させるのに作用する。真空断熱パックは全体の断熱性能
を向上させるか、あるいは、硬質ウレタンフオームの発
泡剤に水およびＲ−１２３を用いた場合は断熱性能がＲ
−１１を用いた場合より劣るが、これをＲ−１１を用い
た場合と同等以上にすることに役立つ。真空断熱パック
の容器材にステンレススチール箔とプラスチックとのラ
ミネートフィルム、あるいは、鉛箔とプラスチックとの
ラミネートフィルムのステンレススチール箔、および、
鉛箔はガスバリヤ性を得るもので、内側プラスチックは
容器として作成時の熱溶着面として働く。鉛箔の場合の
外側フィルムは鉛箔の傷付き防止であり、ステンレスス
チール箔の場合、箔自体が強靭であるためにその必要が
ない。The hard urethane foam is filled together with the vacuum insulation pack into the space consisting of the outer box and the inner box that make up the insulation box to provide a heat insulation effect. Furthermore, it adheres to the outer box and inner box and acts to improve the strength of the box. Vacuum insulation packs improve the overall insulation performance, or if water and R-123 are used as blowing agents for rigid urethane foam, the insulation performance increases to R.
Although it is inferior to the case using R-11, it helps to make it equal to or better than the case using R-11. The container material of the vacuum insulation pack is a laminate film of stainless steel foil and plastic, or a laminate film of lead foil and plastic, and
The lead foil provides gas barrier properties, and the inner plastic serves as a heat welding surface when creating the container. In the case of lead foil, the outer film is to prevent the lead foil from being scratched, but in the case of stainless steel foil, it is not necessary because the foil itself is strong.
以下、本発明の一実施例を第１図ないし第５図により説
明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.
第２図は第１図の■−■矢視断面図で第１図は冷蔵庫用
断熱箱体の斜視図であり、第３図は真空断熱パック４の
詳細図で第４図は第３図の■部の詳細図で真空断熱パッ
ク用容器材構成図である。Fig. 2 is a sectional view taken along the ■-■ arrow in Fig. 1, Fig. 1 is a perspective view of the insulation box for the refrigerator, Fig. 3 is a detailed view of the vacuum insulation pack 4, and Fig. 4 is the same as Fig. 3. This is a detailed diagram of part 2 of FIG.
図において、１は冷蔵庫用断熱箱体で、２はその外箱で
あり鉄板製である。３は内箱でありプラスチックでハイ
アクリロニトリル樹脂製である。In the figure, 1 is a heat insulating box for a refrigerator, and 2 is its outer box, which is made of iron plate. 3 is an inner box made of plastic and high acrylonitrile resin.
４は真空断熱パックで、６は４のコア材でありグラスウ
ールマットを用いた。７は４の容器材で詳細を第４図に
示す。１０が金属箔で鉛、あるいは、ステンレススチー
ル（Ｓ Ｕ ３３０４）で厚さは２０μｍのものを用い
た。ステンレス箔は厚さ５０μｍの箔を焼鈍しさらに２
０μｍまで圧延して作製したものである。１１は１０の
傷付き防止用フィルムでポリエチレンを用い６０μｍの
厚さを用いた。なお、金属箔１０にステンレススチール
を用いた場合は金属箔自体が強靭なため１１は必要とし
ない。９は真空断熱容器作製用熱加圧溶着材フィルムで
、ポリエチレン樹脂フィルム、厚さ４０μｍを用いた。4 is a vacuum insulation pack, and 6 is the core material of 4, which is a glass wool mat. 7 is the container material of 4, the details of which are shown in FIG. 10 is a metal foil made of lead or stainless steel (SU 3304) with a thickness of 20 μm. Stainless steel foil is annealed foil with a thickness of 50 μm and further
It was produced by rolling to 0 μm. No. 11 is the scratch-preventing film of No. 10, which is made of polyethylene and has a thickness of 60 μm. Note that when stainless steel is used for the metal foil 10, the metal foil 11 is not necessary because the metal foil itself is strong. 9 is a heat-pressure welding material film for producing a vacuum insulation container, and a polyethylene resin film with a thickness of 40 μm was used.
なお、ステンレス箔とポリエチレンフィルムの接着のた
めの接着剤は酢酸ビニル・エチレン共重合系接着剤を用
いた。５は硬質ウレタンフオームであり、外箱２、内箱
３より形成される空間部に真空断熱パック４をセットし
、発泡成形用層にセットし、発泡原液を注入して、発泡
成形したものである。この発泡原液はポリオール、イソ
シアネートおよび発泡剤、反応触媒、整泡剤よりなるが
、この発泡剤をポリオール１００重量部当り１〜３．５
重量部の水とＲ−１２３を５０重量部用いた。なお、こ
の発泡原液はポリオール、発泡剤、反応触媒および整泡
剤を混合しておき、これとイソシアネートを注入直前に
混合して注入するものである。Note that a vinyl acetate/ethylene copolymer adhesive was used as the adhesive for adhering the stainless steel foil and the polyethylene film. 5 is a hard urethane foam, which is foam-molded by setting a vacuum insulation pack 4 in the space formed by the outer box 2 and inner box 3, setting it in the foam molding layer, and injecting the foaming stock solution. be. This foaming stock solution consists of a polyol, an isocyanate, a blowing agent, a reaction catalyst, and a foam stabilizer.
Parts by weight of water and 50 parts by weight of R-123 were used. This foaming stock solution is prepared by mixing a polyol, a blowing agent, a reaction catalyst, and a foam stabilizer, and then mixing this with isocyanate immediately before injection.
第５図は真空断熱パック用容器材に各ラミネートフィル
ムを用いて経過時間と熱伝導率の変化のデータを示すも
のである。アルミ蒸着プラスチックラミネートフィルム
（アルミニウム厚さ０．０５μｍ）１２は経過時間とと
もにラミネートフィルムよりガスが透過し、真空がリー
クし熱伝導率が上昇して断熱性能が劣化していくことが
わかる。アルミニウム箔ラミネートフィルム材１３は初
期の熱伝導率が大きく断熱性能が真空断熱材としては良
くない。FIG. 5 shows data on changes in thermal conductivity versus elapsed time when each laminate film was used as a container material for a vacuum insulation pack. It can be seen that the aluminum vapor-deposited plastic laminate film (aluminum thickness: 0.05 μm) 12 causes gas to permeate through the laminate film over time, vacuum leaks, thermal conductivity increases, and heat insulation performance deteriorates. The aluminum foil laminate film material 13 has a high initial thermal conductivity and its heat insulation performance is not good as a vacuum heat insulation material.
鉛箔・プラスチックラミネートフィルム材１４、ステン
レス・プラスチックラミネートフィルム材１５は初期の
熱伝導率も小さくまったく劣化していない。The initial thermal conductivity of the lead foil/plastic laminate film material 14 and the stainless steel/plastic laminate film material 15 is low and has not deteriorated at all.
本発明によれば、真空断熱パックの真空度を長期間半永
久的に維持でき、さらに、ヒートブリッジを極力少なく
することができるため、真空断熱パックの周囲よりの熱
漏洩量を非常に小さく抑えることができる。又、硬質ウ
レタンフオームの発泡剤にＲ−１２３を用いたフオーム
と組合せた場合、従来真空断熱パック用賽器材に用いて
いたアルミ箔がＲ−１２３の加水分解の生成物により腐
食されることもないため、真空断熱パックの真空度を半
永久的に維持できる。According to the present invention, the degree of vacuum of the vacuum insulation pack can be maintained semi-permanently for a long period of time, and furthermore, heat bridges can be minimized, so the amount of heat leakage from the surroundings of the vacuum insulation pack can be kept extremely small. I can do it. In addition, when combined with a rigid urethane foam using R-123 as a foaming agent, the aluminum foil conventionally used for the sling material for vacuum insulation packs may be corroded by the products of hydrolysis of R-123. Therefore, the vacuum level of the vacuum insulation pack can be maintained semi-permanently.
第１図は冷蔵庫用断熱箱体の斜視図、第２図は第１図の
■−■矢視断面図、第３図は真空断熱パックの断面図、
第４図は第３図の■部詳細図であ１・・・冷蔵庫用断熱
箱体
２・・・外箱
３・・・内箱
４・・・真空断熱パック
５・・・硬質ウレタンフオーム
６・・・真空断熱パック用コア材
７・・・真空断熱パック用容器材
ＩＯ・・・金属箔
５１ｊｊ５図
竿４図
７−−−真’ＺｌｆＴ熱バツク用容器村１０− 金属箔
梵２図
蒙
図
？−−−タＦａ
５−内箱
５−−一不更賛つｂクシフオ−ム
力５５図
経
ｈｅ丹間
１２−一−アノＬミ、美、着フ゛う又子ツクフィルムｔ
！ｆ！ｉ所奔へイ云導牢１ｊ−−−アルミ箔・７°う人
チックラミネートフィル４Ｌ眉εノた熱六導宇１４−：
ｆＡ ７＆・
１５−ノー人テ″／Ｌ又負ｉ・Fig. 1 is a perspective view of a heat insulating box for a refrigerator, Fig. 2 is a sectional view taken along the ■-■ arrow in Fig. 1, and Fig. 3 is a sectional view of a vacuum insulation pack.
Fig. 4 is a detailed view of part ■ in Fig. 3. 1... Refrigerator insulation box 2... Outer box 3... Inner box 4... Vacuum insulation pack 5... Hard urethane foam 6 ...Core material for vacuum insulation pack 7...Container material for vacuum insulation pack IO...Metal foil 51jj5 Fig. 4 Fig. 7---True'ZlfT thermal bag container village 10-Metal foil san 2 Fig. figure? ---Data Fa 5-Inner box 5--100% praise b.
! f! Aluminum foil, 7° flat laminate fill 4L eyebrow ε no heat 14-:
fA 7&・ 15-no person te″/L also negative i・
Claims (1)
断熱箱体を構成する前記断熱材に、真空断熱パックと硬
質ウレタンフォームを用い、前記真空断熱パック用の容
器材にステンレススチール箔とプラスチック等のラミネ
ートフィルムを用いることを特徴とする断熱箱体。 ２、請求項１において、前記真空断熱パック用容器材に
鉛箔とプラスチック等のラミネートフィルムを用いる断
熱箱体。 ３、請求項１において、前記硬質ウレタンフォームがポ
リオール成分とイソシアネート成分を発泡剤、反応触媒
および整泡剤の存在下で反応させるもので、発泡剤にポ
リオール１００重量部当り１〜３．５重量部の水と１．
１−ジクロロ−２．２．２−トリフルオロエタン（Ｒ−
１２３）を３０〜７０重量部用いた断熱箱体。[Scope of Claims] 1. The space formed by combining the outer box and the inner box is filled with a heat insulating material to form a heat insulating box body. An insulating box body characterized by using stainless steel foil and a laminate film of plastic or the like as the container material for the pack. 2. The insulation box according to claim 1, wherein the container material for the vacuum insulation pack is made of lead foil and a laminate film of plastic or the like. 3. In claim 1, the rigid urethane foam is one in which a polyol component and an isocyanate component are reacted in the presence of a blowing agent, a reaction catalyst, and a foam stabilizer, and the blowing agent contains 1 to 3.5 parts by weight per 100 parts by weight of polyol. Part of water and 1.
1-dichloro-2.2.2-trifluoroethane (R-
123) in an amount of 30 to 70 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17004690A JPH0462379A (en) | 1990-06-29 | 1990-06-29 | Heat-insulated box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17004690A JPH0462379A (en) | 1990-06-29 | 1990-06-29 | Heat-insulated box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0462379A true JPH0462379A (en) | 1992-02-27 |
Family
ID=15897615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17004690A Pending JPH0462379A (en) | 1990-06-29 | 1990-06-29 | Heat-insulated box |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0462379A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018042612A1 (en) * | 2016-09-02 | 2018-03-08 | 三菱電機株式会社 | Vacuum heat insulating material and heat insulating box |
-
1990
- 1990-06-29 JP JP17004690A patent/JPH0462379A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018042612A1 (en) * | 2016-09-02 | 2018-03-08 | 三菱電機株式会社 | Vacuum heat insulating material and heat insulating box |
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