JPH06159922A - Heat-insulating case and manufacture thereof - Google Patents
Heat-insulating case and manufacture thereofInfo
- Publication number
- JPH06159922A JPH06159922A JP31716592A JP31716592A JPH06159922A JP H06159922 A JPH06159922 A JP H06159922A JP 31716592 A JP31716592 A JP 31716592A JP 31716592 A JP31716592 A JP 31716592A JP H06159922 A JPH06159922 A JP H06159922A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- box
- paper material
- insulating
- heat insulating
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金属製の外箱と樹脂製
の内箱とこれら内外両箱間に収納される断熱体とで構成
された断熱箱体及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating box body composed of a metal outer box, a resin inner box, and a heat insulating body housed between the inner and outer boxes, and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】本発明に先行する実公昭３８−８６７８
号公報には、冷蔵庫の周壁の内側に、減圧気体とガス吸
収性粉末物質を装填した断熱壁を取り付け、断熱壁の真
空を破らぬように冷蔵庫の周壁に取り付けられた冷媒管
を介して冷凍機に連結した冷蔵庫が開示されている。そ
して真空断熱壁相互の間隙、内箱と断熱壁との間隙、外
箱と断熱壁との間隙等は必要に応じて保冷材が充填され
たり、発泡断熱材が充填されたりするものである。2. Description of the Related Art Jitsuko 38-8678 prior to the present invention
In the gazette, a heat insulating wall loaded with a decompressed gas and a gas-absorbing powder substance is attached to the inside of the peripheral wall of the refrigerator, and the refrigerator is frozen through a refrigerant pipe attached to the peripheral wall of the refrigerator so as not to break the vacuum of the heat insulating wall. A refrigerator connected to the machine is disclosed. The space between the vacuum heat insulating walls, the space between the inner box and the heat insulating wall, the space between the outer box and the heat insulating wall, and the like are filled with a cold insulating material or a foamed heat insulating material as needed.
【０００３】[0003]
【発明が解決しようとする課題】上記公報の冷蔵庫で
は、各間隙に保冷材を充填しなければならないため保冷
材の充填作業が煩わしく、また、複雑な形状に形成され
る内箱に対しては前記間隙も複雑な形状になることから
この複雑な形状の間隙を保冷材あるいは発泡断熱材でう
まく塞ぐことができない。このため、間隙に対応した部
分には結露が生じやすく、冷蔵庫の断熱箱体としての断
熱性能が発泡断熱材を充填したものに比して著しく低下
する不具合があった。さらに、各間隙に充填した保冷材
と断熱壁とは独立していることから、箱体の強度確保の
ためには保冷材と断熱壁とを何らかの補強部材で連結し
なければならず、その連結作業が煩わしいだけでなく、
連結できない部分があり断熱箱体の構造強度が著しく低
下する不具合があった。In the refrigerator of the above-mentioned publication, since the cold insulating material has to be filled in each gap, the work of filling the cold insulating material is troublesome, and for the inner box formed in a complicated shape. Since the gap also has a complicated shape, it is not possible to close the gap having the complicated shape with the cold insulating material or the foamed heat insulating material. For this reason, there is a problem that dew condensation is likely to occur in the portion corresponding to the gap, and the heat insulating performance as the heat insulating box of the refrigerator is significantly reduced as compared with the case in which the foam heat insulating material is filled. Further, since the cold insulating material filled in each gap and the heat insulating wall are independent, the cold insulating material and the heat insulating wall must be connected by some kind of reinforcing member in order to secure the strength of the box body. Not only the work is troublesome,
There was a problem that there was a part that could not be connected and the structural strength of the heat insulating box was significantly reduced.
【０００４】そこで本発明では、真空断熱体を内外両箱
間に収納する断熱箱体において、真空断熱体と内箱ある
いは外箱との間に間隙ができないようにして真空断熱体
の収納作業を容易に行えるようにするとともに、補強部
材を用いることなく断熱箱体の構造強度を確保できるよ
うにした断熱箱体及びその製造方法を提供することを目
的とする。Therefore, according to the present invention, in the heat insulating box for storing the vacuum heat insulating body between the inner and outer boxes, the vacuum heat insulating body is stored by preventing a gap between the vacuum heat insulating body and the inner or outer box. An object of the present invention is to provide a heat-insulating box and a method for manufacturing the heat-insulating box, which can be easily performed and can secure the structural strength of the heat-insulating box without using a reinforcing member.
【０００５】[0005]
【課題を解決するための手段】本発明は、金属製の外箱
と、樹脂製の内箱と、これら内外両箱間に収納される断
熱体とで構成された断熱箱体において、前記断熱体は、
袋状をなす成形可能な紙材と、この紙材の袋状の部分に
充填された無機多孔質材料の充填材と、前記紙材を被覆
する樹脂製の被覆部材とからなり、この断熱体を内外両
箱で囲まれた部分の形状に成形した断熱箱体を提供する
ものである。The present invention provides a heat-insulating box body comprising a metal outer box, a resin inner box, and a heat-insulating body housed between the inner and outer boxes. The body is
A heat-insulating body comprising a bag-shaped moldable paper material, a filler of an inorganic porous material with which the bag-shaped portion of the paper material is filled, and a resin-made covering member for covering the paper material. The present invention provides a heat-insulating box body that is formed in the shape of a portion surrounded by both inner and outer boxes.
【０００６】また本発明は、金属製の外箱と樹脂製の内
箱とで形成された空間の外形状に成形された紙材の中に
無機多孔質材料の充填材を充填した後、樹脂製の被覆部
材の中に前記紙材を収納しこの被覆部材と前記紙材との
間を真空引きした後、被覆部材を密封して真空断熱体を
形成し、この真空断熱体を前記空間内に収納して断熱箱
体を形成してなる断熱箱体の製造方法を提供するもので
ある。Further, according to the present invention, a paper material molded into an outer shape of a space formed by an outer box made of metal and an inner box made of resin is filled with a filler of an inorganic porous material, and then the resin is filled. The paper material is housed in a covering member made of a material, a vacuum is drawn between the covering member and the paper material, and then the covering member is sealed to form a vacuum heat insulator. The present invention provides a method for manufacturing a heat insulating box body that is housed in a heat insulating box body to form a heat insulating box body.
【０００７】[0007]
【作用】本発明の請求項１の断熱箱体によれば、断熱体
が内箱と外箱で囲まれた部分の形状とほぼ同じ形状に成
形されることから、断熱体を内外両箱間に隙間なく収納
することができる。According to the heat-insulating box body of claim 1 of the present invention, the heat-insulating body is formed into substantially the same shape as the shape of the portion surrounded by the inner box and the outer box. Can be stored without gaps.
【０００８】本発明の請求項２の製造方法によれば、金
属製の外箱と樹脂製の内箱とで形成された空間に簡単に
真空断熱体を収納することができる。According to the manufacturing method of the second aspect of the present invention, the vacuum heat insulator can be easily housed in the space formed by the metal outer box and the resin inner box.
【０００９】[0009]
【実施例】以下本発明の実施例を図面に基づいて説明す
る。１は冷蔵庫本体としての前面を開口した断熱箱体で
あり、この断熱箱体１は、金属製の外箱２と、樹脂製の
内箱３と、内外両箱で囲まれた空間部分に収納される断
熱材としての真空断熱体４とで構成される。通常、断熱
箱体１の前面開口は断熱扉（図示せず）で開閉自在に閉
塞され、断熱箱体と断熱扉とで囲まれた部分が貯蔵室と
なる。Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 is a heat-insulating box body having a front opening as a refrigerator body, and this heat-insulating box body 1 is stored in a space portion surrounded by a metal outer box 2, a resin inner box 3 and both inner and outer boxes. And a vacuum heat insulator 4 as a heat insulating material. Usually, the front opening of the heat insulating box 1 is openably and closably closed by a heat insulating door (not shown), and the portion surrounded by the heat insulating box and the heat insulating door serves as a storage chamber.
【００１０】貯蔵室は仕切壁や棚などの仕切部材で上下
あるいは左右に仕切られるが、内箱３にはこの仕切部材
を取り付けるための凹凸やダクトや部品を収納するため
の凹凸等が形成してあることから、内箱３の形状は、図
１に示すように複雑な断面形状となっている。The storage room is partitioned vertically or horizontally by partition members such as partition walls and shelves, and the inner box 3 is formed with irregularities for attaching the partition members and irregularities for accommodating ducts and parts. Therefore, the shape of the inner box 3 has a complicated sectional shape as shown in FIG.
【００１１】真空断熱体４は、袋状をなす成形可能な紙
材１１と、この紙材１１の袋状の部分に充填された無機
多孔質材料の充填材１２と、前記紙材１１を被覆する樹
脂製の被覆部材１３とからなる。また真空断熱体４は、
内外両箱で囲まれる部分の外形状とほぼ同じ形状になる
ように成形してある。The vacuum heat insulating body 4 covers the paper material 11 in the form of a bag, the filler 12 of the inorganic porous material filled in the bag-like portion of the paper material 11, and the paper material 11. And a covering member 13 made of resin. In addition, the vacuum insulator 4
It is molded to have almost the same outer shape as the part surrounded by the inner and outer boxes.
【００１２】紙材１１としては、例えばクラフトパルプ
や不織布等が適当であり本実施例では不織布を使用して
いる。被覆部材１３として本実施例では、塩化ビニリデ
ンの樹脂表面（即ち内箱及び外箱側の表面）にアルミニ
ウム或るいはステンレス等の金属を蒸着させたものを使
用している。紙材１１の内側面に金属蒸着を施しておけ
ば、この被覆部材１３を透過したガス分子が紙材１１を
透過しにくくすること及び輻射による伝熱を抑制するこ
と並びに紙材１１の劣化が抑制できる。As the paper material 11, for example, kraft pulp or non-woven fabric is suitable, and non-woven fabric is used in this embodiment. In the present embodiment, the covering member 13 is made of a vinylidene chloride resin surface (that is, the surface of the inner box and the outer box) on which metal such as aluminum or stainless steel is vapor-deposited. If metal vapor deposition is applied to the inner surface of the paper material 11, the gas molecules that have permeated the covering member 13 are less likely to permeate the paper material 11, heat transfer due to radiation is suppressed, and the paper material 11 is deteriorated. Can be suppressed.
【００１３】本実施例における充填材１２としては、伝
導による伝熱を小さくするための軽量かつ安価で熱伝導
率が低いケイ酸カルシウムの粒子と、電磁波の輻射によ
る伝熱を小さくするための反射率の低いアルミナ等の金
属粒子と、ガス分子を吸着して対流による伝熱を小さく
するためのゼオライトの粒子とを混ぜたものを採用して
いる。尚、ゼオライトの粒子の吸着細孔としては、通常
３オングストローム〜数十オングストロームのものがあ
り、本例ではこの細孔が４オングストロームのものを採
用しているため、分子の大きさが３．５オングストロー
ム程度の炭酸ガス及び２．８オングストロームの水蒸気
はともに吸着可能である。As the filler 12 in this embodiment, particles of calcium silicate that are lightweight, inexpensive, and have low thermal conductivity for reducing heat transfer due to conduction, and reflection for reducing heat transfer due to radiation of electromagnetic waves. A mixture of metal particles such as alumina having a low rate and zeolite particles for adsorbing gas molecules to reduce heat transfer due to convection is adopted. As the adsorption pores of the zeolite particles, there are usually 3 angstroms to several tens of angstroms. In this example, since these pores have 4 angstroms, the molecular size is 3.5. Both carbon dioxide gas of about angstrom and water vapor of 2.8 angstrom can be adsorbed.
【００１４】次に、断熱箱体の製造手順について説明す
る。最初に、真空断熱体４の作成手順について説明する
と、まず、内箱と外箱とで囲まれる空間部分の内容積よ
り若干大きめの容積でかつ両端を開放した袋状の紙材１
１を用意し、前記空間部分のの外形状より若干小さめの
形状の凹所を形成した型２１に紙材１１を固定する。そ
して、この紙材１１の一端側からホッパー２２で充填材
１２を紙材１１内に注入する一方、紙材１１の他端側か
ら吸引装置２３で紙材１１の中の空気を吸引することに
より、充填材１２を紙材１１内に満遍無く充填し、紙材
１１の両端を密封する。この工程で紙材１１の形状が前
記空間部分の外形状とほぼ同じ形状に成形される。尚、
充填材１２の注入口は１つに限定されるものではなく、
空間の形状や空間の大きさ等に応じて適宜注入口の数を
設定すればよい。Next, the procedure for manufacturing the heat insulating box will be described. First, the procedure for producing the vacuum heat insulator 4 will be described. First, the bag-shaped paper material 1 having a volume slightly larger than the internal volume of the space surrounded by the inner box and the outer box and having both ends open.
1 is prepared, and the paper material 11 is fixed to the mold 21 in which a recess having a shape slightly smaller than the outer shape of the space portion is formed. The hopper 22 injects the filler 12 into the paper material 11 from one end side of the paper material 11, and the suction device 23 sucks the air in the paper material 11 from the other end side of the paper material 11. The filling material 12 is evenly filled in the paper material 11, and both ends of the paper material 11 are sealed. In this step, the shape of the paper material 11 is formed into substantially the same shape as the outer shape of the space portion. still,
The filler 12 is not limited to one injection port,
The number of injection ports may be appropriately set according to the shape of the space, the size of the space, and the like.
【００１５】この後、充填材１２が充填された紙材１１
を前述の型２１から取り出し、一端側が開放した袋状の
被覆部材１３に収納し、被覆部材１３と紙材１１との間
の空気を真空装置２４で約１０-1Torr程度まで真空引き
した後、被覆部材１３の一端側を図示しないヒートシー
ル装置でヒートシールすることにより、前述の空間部分
の外形状とほぼ同じ形状の真空密封した容器（即ち真空
断熱体４）ができあがる。尚、被覆部材１３を紙材１１
の外形状と略同じ形状に成形するにあたり、紙材１１を
被覆部材１３内に収納した後、被覆部材１３を型２１内
に入れて被覆部材１３と紙材１１との間の空気を真空装
置２４で約１０-1Torr程度まで真空引きすれば、前述の
方法よりも成形しやすくなることはいうまでもない。After this, the paper material 11 filled with the filler material 12
Is taken out from the mold 21 and is housed in a bag-shaped covering member 13 whose one end is opened, and air between the covering member 13 and the paper material 11 is evacuated to about 10 −1 Torr by a vacuum device 24. By heat-sealing one end side of the covering member 13 with a heat-sealing device (not shown), a vacuum-sealed container (that is, the vacuum heat insulating body 4) having substantially the same shape as the outer shape of the above-mentioned space is completed. In addition, the covering member 13 is replaced with the paper material 11
When the paper material 11 is housed in the covering member 13 and then the covering member 13 is put in the mold 21, air between the covering member 13 and the paper material 11 is vacuumized in order to form the outer shape of the paper material 11 into substantially the same shape. Needless to say, if the vacuum is applied to about 10 -1 Torr at 24, the molding becomes easier than the above method.
【００１６】それから、この真空断熱体４の表面に熱可
塑性樹脂（例えばポリプロピレン）を主成分としたホッ
トメルト接着剤を塗布し、この状態の真空断熱体４を外
箱２と内箱３で囲まれる空間に収納すれば、真空断熱体
４と内外両箱３，２とが前述の接着剤で密着固定され
て、真空断熱体入りの断熱箱体１ができあがる。Then, a hot melt adhesive containing a thermoplastic resin (for example, polypropylene) as a main component is applied to the surface of the vacuum heat insulator 4, and the vacuum heat insulator 4 in this state is surrounded by an outer box 2 and an inner box 3. When the vacuum heat insulator 4 and the inner and outer boxes 3 and 2 are tightly fixed to each other by the above-mentioned adhesive, the heat insulator box 1 containing the vacuum heat insulator is completed.
【００１７】以上の製造方法によれば、内外両箱３，２
間に収納する真空断熱体４を外箱２と内箱３とで囲まれ
た空間部分の外形状とほぼ同形状に成形できることに加
え、この真空断熱体４と内外両箱３，２との間に隙間が
生じることはない。また、真空断熱体は発泡断熱材と比
較して対流伝熱の割合が小さいため、輻射と伝導による
伝熱が両者で等しいと仮定した場合、この対流伝熱の差
から真空断熱体のほうが発泡断熱材よりも熱伝達率が低
くなる。このため、従来の発泡断熱材を充填した断熱箱
体の各壁の厚さに比べ、本発明の断熱箱体の各壁の厚さ
を薄くできる。According to the above manufacturing method, both the inner and outer boxes 3, 2
In addition to the fact that the vacuum heat insulator 4 housed in between can be formed to have substantially the same shape as the outer shape of the space portion surrounded by the outer box 2 and the inner box 3, the vacuum heat insulator 4 and the inner and outer boxes 3, 2 are There is no gap between them. Also, since the ratio of convective heat transfer is smaller in a vacuum heat insulating material than in a foam heat insulating material, if it is assumed that the heat transfer due to radiation and conduction are the same in both cases, the difference between this convective heat transfer causes the vacuum heat insulating material to foam. Has a lower heat transfer coefficient than the insulation. Therefore, the thickness of each wall of the heat insulating box of the present invention can be made smaller than the thickness of each wall of the conventional heat insulating box filled with the foamed heat insulating material.
【００１８】[0018]
【発明の効果】本発明の請求項１の断熱箱体によれば、
断熱体が内箱と外箱で囲まれた部分の形状とほぼ同じ形
状に成形されることから、断熱体を内外両箱間に収納す
るにあたり断熱体と両箱間に隙間が生じることはなく、
この隙間を塞ぐ作業及び隙間を塞ぐ部材と断熱体とを連
結する作業が廃止できるとともに、内外両箱間への断熱
体収納作業が容易に行え、従来の発泡断熱材を充填した
断熱箱体と比べても断熱性能が著しく低下する不具合は
なくなる。According to the heat insulating box body of claim 1 of the present invention,
Since the heat insulator is molded into almost the same shape as the part surrounded by the inner and outer boxes, there is no gap between the heat insulator and both boxes when storing the heat insulator between the inner and outer boxes. ,
The work of closing the gap and the work of connecting the member for closing the gap and the heat insulating body can be eliminated, and the work of storing the heat insulating body between the inner and outer boxes can be easily performed. Even if the comparison is made, there is no problem that the heat insulation performance is remarkably reduced.
【００１９】本発明の請求項２の製造方法によれば、真
空断熱体を金属製の外箱と樹脂製の内箱とで形成された
空間の外形状とほぼ同形状のものにできることに加え、
内外両箱間に簡単かつ隙間なく真空断熱体を収納するこ
とができる。According to the manufacturing method of claim 2 of the present invention, in addition to the fact that the vacuum heat insulator can be made to have substantially the same outer shape as the space formed by the metal outer box and the resin inner box. ,
The vacuum heat insulator can be stored between the inner and outer boxes easily and without any gap.
【図１】本発明の断熱箱体の縦断面図である。FIG. 1 is a vertical sectional view of a heat insulating box of the present invention.
【図２】紙材を内外両箱で囲まれる空間形状に成形する
手順を説明する断面図である。FIG. 2 is a cross-sectional view illustrating a procedure for forming a paper material into a space shape surrounded by both inner and outer boxes.
【図３】被覆部材を紙材に密着させる製造手順を説明す
る断面図である。FIG. 3 is a cross-sectional view illustrating a manufacturing procedure for bringing a covering member into close contact with a paper material.
【図４】真空断熱体の縦断面図である。FIG. 4 is a vertical sectional view of a vacuum heat insulator.
１ 断熱箱体 ２ 外箱 ３ 内箱 ４ 真空断熱体 １１ 紙材 １２ 充填材 １３ 被覆部材 1 Insulation Box Body 2 Outer Box 3 Inner Box 4 Vacuum Insulation Body 11 Paper Material 12 Filling Material 13 Covering Member
───────────────────────────────────────────────────── フロントページの続き (72)発明者 星野 仁 大阪府守口市京阪本通２丁目18番地 三洋 電機株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hitoshi Hoshino 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.
Claims (2)
ら内外両箱間に収納される断熱体とで構成された断熱箱
体において、前記断熱体は、袋状をなす成形可能な紙材
と、この紙材の袋状の部分に充填された無機多孔質材料
の充填材と、前記紙材を被覆する樹脂製の被覆部材とか
らなり、この断熱体を内外両箱で囲まれた部分の形状に
成形したことを特徴とする断熱箱体。1. A heat-insulating box body comprising a metal outer box, a resin inner box, and a heat-insulating body housed between the inner and outer boxes, wherein the heat-insulating body is formed into a bag shape. A paper material that can be used, a filler of an inorganic porous material that is filled in a bag-shaped portion of the paper material, and a resin covering member that covers the paper material. A heat-insulating box body characterized by being molded into the shape of the enclosed portion.
れた空間の外形状に成形された紙材の中に無機多孔質材
料の充填材を充填した後、樹脂製の被覆部材の中に前記
紙材を収納しこの被覆部材と前記紙材との間を真空引き
した後、被覆部材を密封して真空断熱体を形成し、この
真空断熱体を前記空間内に収納して断熱箱体を形成した
ことを特徴とする断熱箱体の製造方法。2. A resin coating after a filler made of an inorganic porous material is filled into a paper material formed into an outer shape of a space formed by an outer box made of metal and an inner box made of resin. After accommodating the paper material in a member and drawing a vacuum between the covering member and the paper material, the covering member is sealed to form a vacuum heat insulator, and the vacuum heat insulator is housed in the space. A method for manufacturing a heat insulating box, comprising forming a heat insulating box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31716592A JPH06159922A (en) | 1992-11-26 | 1992-11-26 | Heat-insulating case and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31716592A JPH06159922A (en) | 1992-11-26 | 1992-11-26 | Heat-insulating case and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06159922A true JPH06159922A (en) | 1994-06-07 |
Family
ID=18085188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31716592A Pending JPH06159922A (en) | 1992-11-26 | 1992-11-26 | Heat-insulating case and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06159922A (en) |
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-
1992
- 1992-11-26 JP JP31716592A patent/JPH06159922A/en active Pending
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