JPH0777383A - Refrigerator and its heat insulating structure - Google Patents
Refrigerator and its heat insulating structureInfo
- Publication number
- JPH0777383A JPH0777383A JP5220817A JP22081793A JPH0777383A JP H0777383 A JPH0777383 A JP H0777383A JP 5220817 A JP5220817 A JP 5220817A JP 22081793 A JP22081793 A JP 22081793A JP H0777383 A JPH0777383 A JP H0777383A
- Authority
- JP
- Japan
- Prior art keywords
- heat insulating
- insulating structure
- plastic
- refrigerator
- outer box
- 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
Links
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Refrigerator Housings (AREA)
- Laminated Bodies (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は冷凍冷蔵庫及びその断熱
構造体に関するものであり、特にリサイクルを目的とし
て分解容易な冷凍冷蔵庫及びそれに適する真空断熱構造
体に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator / freezer and a heat insulating structure thereof, and more particularly to a refrigerator / freezer which is easily disassembled for the purpose of recycling and a vacuum heat insulating structure suitable therefor.
【０００２】[0002]
【従来の技術】一般的な冷凍冷蔵庫の構成を図９及び図
１０を用いて説明する。図９は一般的な冷凍冷蔵庫の外
観を示す斜視図であり、図１０はそのＡ−Ａ断面図であ
る。図１０において、内箱１と外箱２との間隙には、真
空断熱パック４、電線及び銅管等の部材（図示せず）が
設けられており、これらの間に断熱材として硬質ウレタ
ンフォーム３が充填されている。一般に、内箱１と外箱
２とを結合した後、ウレタンを注入発泡し、真空断熱パ
ック４等の部材を固定する。または、ウレタン注入前
に、真空断熱パック４等の部材を両面粘着テープ等によ
り内箱１及び外箱２の内側に接着し、箱体に固定する場
合もある。同様に、ドア７の内部にもウレタンフォーム
９が断熱材として用いられ、内側からドアバック８で覆
われている。2. Description of the Related Art The structure of a general refrigerator-freezer will be described with reference to FIGS. FIG. 9 is a perspective view showing the appearance of a general refrigerator-freezer, and FIG. 10 is a cross-sectional view taken along the line AA. In FIG. 10, members (not shown) such as a vacuum heat insulating pack 4, an electric wire and a copper pipe are provided in a gap between the inner box 1 and the outer box 2, and a hard urethane foam as a heat insulating material is provided between them. 3 is filled. Generally, after joining the inner box 1 and the outer box 2, urethane is injected and foamed to fix members such as the vacuum heat insulating pack 4. Alternatively, before injecting urethane, members such as the vacuum heat insulating pack 4 may be adhered to the inside of the inner box 1 and the outer box 2 with a double-sided adhesive tape or the like and fixed to the box body. Similarly, urethane foam 9 is also used as a heat insulating material inside the door 7, and is covered with a door back 8 from the inside.
【０００３】従来より冷凍冷蔵庫に用いられている真空
断熱構造体の構成を図１１に示す。図１１に示すよう
に、従来の真空断熱構造体は、シリカ、パーライト等の
無機粉末又はウレタン、フェノール等の連通気泡発泡体
等からなるスペーサ材２３を、金属層を有するラミネー
トフィルム、金属箔又はプラスチックフィルム等で形成
された容器２４中に充填し、内部を真空にしたものであ
る。FIG. 11 shows the structure of a vacuum heat insulating structure conventionally used in a refrigerator-freezer. As shown in FIG. 11, a conventional vacuum heat insulating structure includes a spacer material 23 made of an inorganic powder such as silica or pearlite or an open cell foam such as urethane or phenol, and a laminated film having a metal layer, a metal foil, or The container 24 is filled with a plastic film or the like and the inside is evacuated.
【０００４】[0004]
【発明が解決しようとする課題】近年、廃棄物をできる
だけ少なくするために、一度使用された機器から有価な
部材を取り出し、リサイクルする必要性が高まってい
る。しかし、従来の冷凍冷蔵庫を分解し、有価な部材と
考えられる内箱１を構成する樹脂材料、外箱２を構成す
る金属材料、真空断熱パック４等を取り出そうとした場
合、これらの部材が接着されている場合はもちろんのこ
と、ウレタンの注入発泡の場合でもポリウレタンが接着
剤のように作用し、各部材の分離が困難となっている。
すなわち、内箱１及び外箱２にウレタンが固着し、ウレ
タンを取り除くことは困難であった。また、真空断熱パ
ック４等に付着したウレタンを剥そうとすると、容器２
４の表面層等が一緒に剥がれたり又は破れたりするた
め、各部材を容易に分離できないという問題点を有して
いた。さらに、真空断熱容器２４のスペーサ材２３とし
てシリカ粉末体等を使用した場合、粉末が大気中から３
〜４％の水分を吸湿しているため、予め加熱炉にて２０
０℃で２時間程度の乾燥をしなければならず、コストが
高くなるという問題点を有していた。さらに、冷凍冷蔵
庫等において、真空断熱体を用いた断熱構造を採用した
場合、ウレタン等の有機発泡体のみによる断熱構造より
も重量が増加するという問題点を派生する。本発明は以
上のような問題点を解決するためになされたものであ
り、冷凍冷蔵庫の断熱部を形成する各部品をウレタン発
泡によっても接着されず、分離し易いように構成した冷
凍冷蔵庫を提供すること、及び乾燥工程が不用であり、
かつ軽量の真空断熱材を提供することを目的としてい
る。In recent years, in order to reduce waste as much as possible, there is an increasing need to take out valuable members from once-used equipment and recycle them. However, when the conventional freezer-refrigerator is disassembled and the resin material forming the inner box 1, the metal material forming the outer box 2, the vacuum heat insulating pack 4, etc., which are considered to be valuable members, are to be taken out, these members adhere to each other. Not only in the case of polyurethane, but also in the case of urethane injection and foaming, polyurethane acts like an adhesive, making it difficult to separate each member.
That is, the urethane adhered to the inner box 1 and the outer box 2, and it was difficult to remove the urethane. Also, if you try to peel off the urethane that has adhered to the vacuum insulation pack 4 etc., the container 2
Since the surface layer of 4 and the like are peeled off or broken together, there is a problem that the respective members cannot be easily separated. Furthermore, when a silica powder body or the like is used as the spacer material 23 of the vacuum heat insulating container 24, the powder is not removed from the atmosphere by 3 times.
Since it absorbs up to 4% of water, it will be
There was a problem that the cost was increased because the drying had to be performed at 0 ° C. for about 2 hours. Further, when a heat insulating structure using a vacuum heat insulating material is adopted in a refrigerator or the like, a problem arises that the weight is increased as compared with a heat insulating structure using only an organic foam such as urethane. The present invention has been made to solve the above problems, and provides a refrigerating refrigerator configured such that each component forming a heat insulating portion of a refrigerating refrigerator is not adhered even by urethane foam and can be easily separated. And the drying step is unnecessary,
The purpose is to provide a lightweight vacuum heat insulating material.
【０００５】[0005]
【課題を解決するための手段】以上のような問題点を解
決するために、本発明の冷凍冷蔵庫は、内箱と外箱のそ
れぞれの内表面及び内箱と外箱との間の空間に埋設され
る部材の表面に剥離層を設け、前記内箱と外箱との間の
空間に発泡断熱材を充填してなるように構成されてい
る。上記構成において、内箱と外箱の間に埋設される部
材の少なくとも一部が、内部が真空に保たれた容器の中
に断熱スペーサー材を充填した断熱構造体であることが
好ましい。また、剥離層は少なくともフッ素系樹脂又は
シリコーンを含むことが好ましい。剥離層はフッ素系樹
脂又はシリコーンからなる粒子を樹脂内に分散させて形
成されたことが好ましい。また、本発明の断熱構造体
は、内部が真空に保たれた容器中にプラスチックから成
るスペーサ材を充填することにより構成されている。上
記構成において、容器表面に剥離層を設け、前記剥離層
上に有機発泡断熱材からなる層を形成したことが好まし
い。また、スペーサ材は、吸水率が０．５％以下のプラ
スチックであることが好ましい。また、プラスチックか
らなるスペーサ材は球状の粒子であることが好ましい。
また、プラスチックからなるスペーサ材は、隔壁により
仕切られた平行に貫通した多数の貫通孔を有し、かつ各
貫通孔を仕切る隔壁には少なくとも１つの通気孔が設け
られていることが好ましい。また、貫通孔の形は多角形
であることが好ましい。また、プラスチックからなるス
ペーサ材は、各貫通孔が塞がれるように２枚の板に挟ま
れて配置されたことが好ましい。In order to solve the above-mentioned problems, the refrigerator-freezer of the present invention has an inner surface of each of the inner and outer boxes and a space between the inner and outer boxes. A separation layer is provided on the surface of the member to be embedded, and the space between the inner box and the outer box is filled with a foamed heat insulating material. In the above structure, it is preferable that at least a part of the member embedded between the inner box and the outer box is a heat insulating structure in which a container having a vacuum inside is filled with a heat insulating spacer material. Further, the release layer preferably contains at least a fluororesin or silicone. The release layer is preferably formed by dispersing particles made of a fluororesin or silicone in the resin. Further, the heat insulating structure of the present invention is configured by filling a spacer material made of plastic in a container whose inside is kept in a vacuum. In the above structure, it is preferable that a release layer is provided on the surface of the container, and a layer made of an organic foam heat insulating material is formed on the release layer. The spacer material is preferably plastic with a water absorption rate of 0.5% or less. The spacer material made of plastic is preferably spherical particles.
Further, it is preferable that the spacer material made of plastic has a large number of through holes which are partitioned by the partition walls and pass through in parallel, and at least one vent hole is provided in the partition walls partitioning the respective through holes. The shape of the through hole is preferably polygonal. Further, it is preferable that the spacer material made of plastic is arranged so as to be sandwiched between two plates so that each through hole is closed.
【０００６】[0006]
【作用】冷凍冷蔵庫の断熱箱体を構成する内箱、外箱及
び各埋設部材の表面には剥離層が設けられているため、
内箱、外箱、真空パック等の埋設部材はポリウレタンに
よっては直接接着されておらず、分解時に内箱と外箱の
結合を外すことにより、容易に分離される。また、プラ
スチックの吸湿性はシリカ等の無機粉体に比べて非常に
小さいので、内部が真空である断熱構造体のスペーサ材
にプラスチックを用いた場合、予備乾燥の必要がなく、
比重も約半分となり軽量の断熱体が得られる。さらに、
ポリエチレン、ポリプロピレン等のプラスチックの熱伝
導率は無機材料の熱伝導率よりも小さいため、断熱構造
体による熱拡散の遮断効率が向上する。[Function] Since the inner box, outer box and each embedding member constituting the heat insulating box of the refrigerator are provided with the release layer,
Embedded members such as an inner box, an outer box, and a vacuum pack are not directly bonded by polyurethane, and can be easily separated by disconnecting the inner box and the outer box when disassembling. Further, since the hygroscopicity of plastic is much smaller than that of inorganic powder such as silica, when plastic is used for the spacer material of the heat insulating structure whose interior is vacuum, there is no need for preliminary drying,
The specific gravity is about half, and a lightweight heat insulator can be obtained. further,
Since the thermal conductivity of plastics such as polyethylene and polypropylene is lower than the thermal conductivity of inorganic materials, the heat diffusion blocking efficiency of the heat insulating structure is improved.
【０００７】[0007]
＜第１実施例＞本発明に係る冷凍冷蔵庫及びその断熱構
造を、その好適な実施例（第１の実施例）を示す図１を
用いて説明する。図１は図９に示す一般的な冷凍冷蔵庫
のＡ−Ａ断面図と同じ部位の断面図であり、本発明の冷
凍冷蔵庫の断熱構造を示す。図１において、内箱１及び
外箱２の内面には剥離層５がそれぞれ形成されている。
内箱１と外箱２との間の空間には真空断熱パック４、電
線及び銅管等の部材（図示せず）が設けられており、真
空断熱パック４等の表面にも剥離層６が形成されてい
る。さらに、内箱１と外箱２との間の空間には断熱材と
して硬質ウレタンフォーム３が充填されている。同様
に、ドア７の内部及びドアバック８の内面にも剥離層１
０が形成され、ドア７の内側の空間に断熱材としてウレ
タンフォーム９を充填した後、ドアバック８により覆わ
れる。内箱１及びドアバック８は、例えばアクリロニト
リル・ブタジエン・スチレン共重合体（ＡＢＳ樹脂）等
の成形用の樹脂で成形されている。外箱２及びドア７は
鉄、ステンレス、アルミ等の金属材料からなる。真空断
熱パック４は、熱伝導率の小さいスペーサー材を、ガス
バリヤー性の高い、プラスチックラミネートフィルムや
金属箔等からなる容器に充填し、内部を真空にしたもの
である。剥離層５、６及び１０は、ウレタンフォーム
３、９と内箱１、外箱２、ドア７、ドアバック８の内面
や断熱構造体４の表面とが直接接着されないようにする
ためのものであり、内箱１、外箱２等の内面や断熱構造
体４の表面から容易に剥離できれるものであればよい。
従って、剥離層５等として、例えばフッ素樹脂やシリコ
ーンの単体からなる層、又は図２に示すのようなフッ素
系樹脂又はシリコーンからなる粒子１１を熱可塑性樹脂
等の樹脂１２に分散させた層が好適である。剥離層５等
は、例えば内箱１及び外箱２等の内面に、剥離層５等を
形成する塗液を塗布し、乾燥して形成する。実際に、フ
ァインケミカルジャパン株式会社のファイン耐熱ＴＦＥ
コートやダイキン工業株式会社のダイフリー等をスプレ
ー塗工し、剥離層５を形成した。<First Embodiment> A freezer-refrigerator and a heat insulating structure thereof according to the present invention will be described with reference to FIG. 1 showing a preferred embodiment (first embodiment) thereof. FIG. 1 is a sectional view of the same portion as the sectional view taken along the line AA of the general refrigerator-freezer shown in FIG. 9, showing a heat insulating structure of the refrigerator-freezer of the present invention. In FIG. 1, release layers 5 are formed on the inner surfaces of the inner box 1 and the outer box 2, respectively.
In the space between the inner box 1 and the outer box 2, members (not shown) such as a vacuum heat insulating pack 4, an electric wire and a copper tube are provided, and a peeling layer 6 is also provided on the surface of the vacuum heat insulating pack 4 and the like. Has been formed. Further, the space between the inner box 1 and the outer box 2 is filled with hard urethane foam 3 as a heat insulating material. Similarly, the peeling layer 1 is formed on the inside of the door 7 and the inside of the door back 8.
0 is formed, the space inside the door 7 is filled with urethane foam 9 as a heat insulating material, and then covered with the door back 8. The inner box 1 and the door back 8 are formed of a molding resin such as an acrylonitrile / butadiene / styrene copolymer (ABS resin). The outer box 2 and the door 7 are made of a metal material such as iron, stainless steel, and aluminum. The vacuum heat insulating pack 4 is a container in which a spacer material having a low thermal conductivity is filled in a container having a high gas barrier property and made of a plastic laminate film, a metal foil or the like, and the inside is evacuated. The release layers 5, 6 and 10 are for preventing the urethane foams 3 and 9 from directly adhering to the inner box 1, the outer box 2, the door 7, the inner surface of the door back 8 and the surface of the heat insulating structure 4. It is sufficient that it can be easily peeled off from the inner surface of the inner box 1, the outer box 2 or the surface of the heat insulating structure 4.
Therefore, as the release layer 5 or the like, for example, a layer made of a simple substance of fluororesin or silicone, or a layer in which particles 11 made of a fluororesin or silicone as shown in FIG. 2 are dispersed in a resin 12 such as a thermoplastic resin is used. It is suitable. The peeling layer 5 and the like are formed, for example, by applying a coating liquid for forming the peeling layer 5 and the like on the inner surfaces of the inner box 1 and the outer box 2 and drying. In fact, Fine Heat Resistant TFE of Fine Chemical Japan Co., Ltd.
The release layer 5 was formed by spray coating a coat or Die-free of Daikin Industries, Ltd.
【０００８】こうして得られた冷凍冷蔵庫は、内箱１、
外箱２、真空断熱パック４及びウレタン３はそれぞれ剥
離層５、６を介して接しているため、直接接着されてお
らず、内箱１と外箱２の嵌合及び結合を外すことによ
り、各部品の表面を損なうことなくこれらの部品を容易
に分離することができる。同様に、ドアバック８をドア
７から外すことにより、各部品の表面を損なうことなく
ドア７、ドアバック８及びポリウレタン９とを容易に分
離することができる。すなわち、剥離層５、６、１０等
を設けることにより、容易に各部品を分離できる冷凍冷
蔵庫が得られる。分離された各部材は、表面を擦りなが
ら洗浄することにより、表面に残った剥離層を除去する
ことができた。The refrigerator-freezer thus obtained has an inner box 1,
Since the outer box 2, the vacuum heat insulating pack 4 and the urethane 3 are in contact with each other via the peeling layers 5 and 6, they are not directly adhered to each other, and by removing the fitting and coupling of the inner box 1 and the outer box 2, These parts can be easily separated without damaging the surface of each part. Similarly, by removing the door back 8 from the door 7, the door 7, the door back 8 and the polyurethane 9 can be easily separated without damaging the surface of each component. That is, by providing the release layers 5, 6, 10 and the like, it is possible to obtain a freezer-refrigerator in which each component can be easily separated. By cleaning the separated members while rubbing the surface, the peeling layer remaining on the surface could be removed.
【０００９】なお、上記第１の実施例では、組立前に表
面をフッ素樹脂でコートした例を示したが、予めフッ素
フィルムがラミネートされ一体となったものを使用して
も同様の効果が得られる。例えばフッ素樹脂フィルムラ
ミネート綱板、住友エスフロンＬＭ（住友金属工業株式
会社）を外箱２の材料としてに用いてもよい。また、上
記第１の実施例では、剥離層５、６、１０を形成するの
にフッ素樹脂を用いたが、これに限定されるものではな
く、例えば信越シリコーンＫＳ−７７４（信越化学工業
株式会社）等のシリコーン樹脂を用いてもよい。さら
に、上記第１の実施例では、内箱１と外箱２との間の空
間に埋設される部材として真空断熱パック４を例示した
が、真空断熱パック４を用いずに断熱部材が発泡ウレタ
ンのみからなる場合も同様に実施することができる。ま
た、発泡断熱材として全てウレタンフォームを用いて説
明したが、フェノールフォーム等その他の発泡断熱材の
場合でも同様の効果が得られる。In the first embodiment described above, the surface is coated with a fluororesin before assembly, but the same effect can be obtained by using an integrally laminated fluorofilm in advance. To be For example, a fluororesin film laminated steel plate or Sumitomo Sflon LM (Sumitomo Metal Industries, Ltd.) may be used as a material for the outer box 2. Further, in the first embodiment described above, the fluororesin is used to form the release layers 5, 6 and 10. However, the present invention is not limited to this, and for example, Shin-Etsu Silicone KS-774 (Shin-Etsu Chemical Co., Ltd.). ) And other silicone resins may be used. Further, in the first embodiment described above, the vacuum heat insulating pack 4 is exemplified as the member buried in the space between the inner box 1 and the outer box 2, but the heat insulating member is made of urethane foam without using the vacuum heat insulating pack 4. The same operation can be performed in the case of only one. Further, although urethane foam is used as the foamed heat insulating material in all cases, the same effect can be obtained in the case of other foamed heat insulating material such as phenol foam.
【００１０】＜第２実施例＞次に、本発明に係る断熱構
造体を、その好適な実施例（第２の実施例）を示す図３
及び図４を用いて説明する。図３は本発明の真空断熱構
造体の構成を示す断面図であり、図４はスペーサ１４の
構成を示す斜視図である。図３において、フィルム容器
１３はガスバリヤー性を有する金属箔又は金属蒸着プラ
スチックからなるガスバリヤー層１３ａ及びガスバリヤ
ー層１３ａにラミネートされた熱溶着が可能なポリエチ
レン又はポリプロピレン等からなる熱溶着層１３ｂで構
成されている。フィルム容器１３の中には、プラスチッ
ク材で成形されたスペーサ１４が充填されている。図４
に示すように、スペーサ１４はいわゆるハニカム構造を
有するプラスチック成形体であり、隔壁により仕切られ
た平行に貫通した多数の貫通孔１５を有し、かつ各貫通
孔１５を仕切る隔壁には少なくとも１つの通気孔１６が
設けられている。貫通孔１５の断面形状は多角形（例え
ば６角形）である。スペーサ１４の材料は一般的なプラ
スチック材料、例えばポリエチレン、ポリプロピレン等
である。図３に示す本発明の断熱構造体は、熱溶着層１
３ｂの内部にスペーサ１４を充填した後、容器１３の内
部を真空脱気し、熱溶着層１３ｂの開口部を溶着により
封止することにより形成された。<Second Embodiment> Next, FIG. 3 showing a preferred embodiment (second embodiment) of a heat insulating structure according to the present invention.
And FIG. 4 will be described. FIG. 3 is a cross-sectional view showing the structure of the vacuum heat insulating structure of the present invention, and FIG. 4 is a perspective view showing the structure of the spacer 14. In FIG. 3, the film container 13 includes a gas barrier layer 13a made of a metal foil or a metal vapor-deposited plastic having a gas barrier property, and a heat-welding layer 13b made of polyethylene or polypropylene capable of being heat-welded laminated on the gas barrier layer 13a. It is configured. Spacers 14 formed of a plastic material are filled in the film container 13. Figure 4
As shown in FIG. 3, the spacer 14 is a plastic molded body having a so-called honeycomb structure, has a large number of through holes 15 penetrating in parallel and partitioned by partition walls, and at least one partition wall partitions each through hole 15. Vent holes 16 are provided. The cross-sectional shape of the through hole 15 is polygonal (for example, hexagonal). The material of the spacer 14 is a common plastic material such as polyethylene or polypropylene. The heat insulating structure of the present invention shown in FIG.
After filling the inside of 3b with the spacer 14, the inside of the container 13 was vacuum-deaerated, and the opening of the heat-welding layer 13b was sealed by welding.
【００１１】容器内部を真空にする際の１kg/cm3の圧力
に対してもスペーサ１４は十分な圧縮強度があり、また
成形体のため型くずれしにくく、寸法安定性も良い。プ
ラスチック吸水率は、例えばポリエチレン、ポリプロピ
レン等の場合約０．０１wt％であり、ポリスチレンの場
合約０．０５wt％である。そのため、シリカ（吸水率約
５％）等の無機粉体の吸水率と比較して非常に小さく、
スペーサ１４を容器１３に充填する前に予備乾燥する必
要はない。プラスチックの熱伝導率は、ポリエチレンの
場合０．２２W/mKであり、またポリスチレンの場合０．
１２W/mKである。一方、無機材料、例えばシリカの場
合、非晶質なものでも熱伝導率は１．４W/mK（いずれも
３００Kにおける値）である。そのため、無機材料に比
べプラスチックの素材としての断熱性は良い。さらに、
スペーサ１４はハニカム構造を有し、空間の占める割合
が大きいため、非常に断熱性に優れたスペーサである。
また、ポリエチレン及びポリプロピレンの比重は約０．
９であり、無機材料、例えばシリカの比重２．２の約半
分である。そのため、図３に示す断熱構造体は非常に軽
量である。The spacer 14 has sufficient compressive strength against a pressure of 1 kg / cm 3 when the inside of the container is evacuated, and since it is a molded product, it is hard to lose its shape and has good dimensional stability. The water absorption of plastic is, for example, about 0.01 wt% in the case of polyethylene, polypropylene, etc., and about 0.05 wt% in the case of polystyrene. Therefore, it is very small compared with the water absorption rate of inorganic powder such as silica (water absorption rate of about 5%),
It is not necessary to pre-dry the spacer 14 before filling it into the container 13. The thermal conductivity of plastic is 0.22 W / mK in the case of polyethylene and 0.
It is 12 W / mK. On the other hand, in the case of an inorganic material such as silica, the thermal conductivity of an amorphous material is 1.4 W / mK (both are values at 300 K). Therefore, the heat insulating property of the plastic material is better than that of the inorganic material. further,
Since the spacer 14 has a honeycomb structure and a large proportion of space is occupied, the spacer 14 is a spacer excellent in heat insulating property.
The specific gravity of polyethylene and polypropylene is about 0.
9, which is about half of the specific gravity 2.2 of an inorganic material such as silica. Therefore, the heat insulating structure shown in FIG. 3 is very lightweight.
【００１２】スペーサ１４等に使用されるプラスチック
は、外観不良や多少の不純物の混入等については性能上
問題にならないので、再生プラスチックでも十分であ
る。特に、ポリエチレン、ポリプロピレン、ポリスチレ
ン等の汎用樹脂は、廃プラスチックとして多量に存在
し、低コストで入手可能であり、廃プラスチックをリサ
イクルすることにより安価な断熱構造体を得ることがで
きる。さらに、廃プラスチックの処理が環境問題となっ
ている今日において、その再生利用という観点からも有
効である。また、フィルム容器１３の材質について特に
制限はないが、ガスバリヤー性が大きく、破壊強度が強
く、熱溶着可能なものが好ましい。例えばポリエチレ
ン、ポリビニルアルコール、ポリプロピレン、ナイロ
ン、ポリエチレンテレフタレート、アルミ箔、アルミ蒸
着フィルム、ポリ塩化ビニリデン等の単層あるいは２種
類以上の積層フィルムや、ガラス等を使用することがで
きる。As the plastic used for the spacer 14 and the like, recycled plastic is sufficient because it does not pose a problem in terms of performance in terms of appearance defects and the inclusion of some impurities. In particular, general-purpose resins such as polyethylene, polypropylene and polystyrene exist in large amounts as waste plastics and are available at low cost, and by recycling the waste plastics, it is possible to obtain an inexpensive heat insulating structure. Further, in the present day when the treatment of waste plastics has become an environmental problem, it is effective from the viewpoint of recycling. Further, the material of the film container 13 is not particularly limited, but a material having a large gas barrier property, a high breaking strength and capable of being heat-welded is preferable. For example, polyethylene, polyvinyl alcohol, polypropylene, nylon, polyethylene terephthalate, aluminum foil, aluminum vapor deposition film, polyvinylidene chloride single layer or two or more kinds of laminated films, glass and the like can be used.
【００１３】＜第３の実施例＞なお、断熱構造体に対し
て局所的に大きな圧力が加わることもあり、スペーサ１
４の貫通孔１５の大きさや断面形状等によっては変形す
るおそれがある。そのため、図５に示すように、スペー
サ１４の貫通孔１５を塞ぐように上下から平板状の板１
７によりガイドし、その状態でフィルム容器１３中に設
置するようにしてもよい。板１７の材料を、例えばプラ
スチックやセラミックとすることにより、より安定な断
熱構造体が得られる。<Third Embodiment> Since a large pressure may be locally applied to the heat insulating structure, the spacer 1
There is a risk of deformation depending on the size and cross-sectional shape of the through hole 15 of No. 4. Therefore, as shown in FIG. 5, the flat plate-shaped plate 1 is arranged from above and below so as to close the through hole 15 of the spacer 14.
7 may be used for guiding, and the state may be set in the film container 13. When the material of the plate 17 is plastic or ceramic, for example, a more stable heat insulating structure can be obtained.
【００１４】＜第４の実施例＞なお、図６に示すよう
に、各貫通孔１５を仕切る隔壁の上部に通気孔１６を設
けることにより、プラスチックスペーサ１４を一体成形
することができ、さらにコストを低下させることが可能
となる。また、スペーサ１４の容器１３の真空排気口側
に位置する壁面１８の全面を通気孔にすることにより、
真空排気が容易になる。<Fourth Embodiment> As shown in FIG. 6, the plastic spacer 14 can be integrally molded by providing the ventilation hole 16 in the upper portion of the partition wall that partitions the through holes 15, thereby further reducing the cost. Can be reduced. Further, by making the entire surface of the wall surface 18 of the spacer 14 located on the vacuum exhaust port side of the container 13 into a vent hole,
Evacuation becomes easy.
【００１５】＜第５の実施例＞さらに、プラスチックス
ペーサ１４の形状は、図４又は図６に示した形状に限ら
れず、図７（ａ）又は（ｂ）に示すように、例えばポリ
スチレンビーズ、ポリエチレンビーズ等のプラスチック
球状粒子１９や筒状のプラスチックピース２０を充填し
てもよい。<Fifth Embodiment> Further, the shape of the plastic spacer 14 is not limited to the shape shown in FIG. 4 or 6, and as shown in FIG. 7A or 7B, for example, polystyrene beads, Plastic spherical particles 19 such as polyethylene beads or a cylindrical plastic piece 20 may be filled.
【００１６】＜第６の実施例＞また、図８に示すよう
に、内部が真空の断熱構造体表面に、フッ素系樹脂又は
シリコーンからなる剥離層２１を設け、有機発泡材２２
の中に埋設し複合の断熱構造体として用いることもでき
る。<Sixth Embodiment> Further, as shown in FIG. 8, a release layer 21 made of fluorine resin or silicone is provided on the surface of a heat insulating structure having a vacuum inside, and an organic foam material 22 is provided.
It can also be used as a composite heat insulating structure by embedding in the inside.
【００１７】[0017]
【発明の効果】以上のように本発明によれば、冷凍冷蔵
庫の内箱と外箱の内表面及び内箱と外箱の間に埋設され
る部材の表面に剥離層を設け、内箱と外箱及び埋設部材
との間隙にウレタン等の発泡断熱材を注入発泡し断熱箱
体を形成するように構成したので、内箱、外箱及び真空
パック等埋設部材とポリウレタンとは直接接着されるこ
とはなく、内箱と外箱の結合を外すことにより、各構成
部材とポリウレタンとが容易に分離されるという効果を
有する。また、真空断熱構造体のスペーサ材にプラスチ
ックを用いることにより、予め加熱乾燥する必要がな
く、軽量で、断熱性の良い断熱構造体が得られるという
効果を有する。As described above, according to the present invention, a peeling layer is provided on the inner surfaces of the inner and outer boxes of the refrigerator and the refrigerator and on the surfaces of the members embedded between the inner and outer boxes to form the inner box. Since the foam insulation material such as urethane is injected and foamed in the gap between the outer box and the buried member to form the heat-insulated box body, the inner member such as the inner box, the outer box and the vacuum pack is directly bonded to the polyurethane. However, by removing the connection between the inner box and the outer box, each component and polyurethane can be easily separated. Further, by using plastic as the spacer material of the vacuum heat insulating structure, there is an effect that it is not necessary to heat and dry in advance, and a light weight heat insulating structure having good heat insulating properties can be obtained.
【図１】本発明に係る冷凍冷蔵庫の一実施例（第１の実
施例）の構成を示す断面図FIG. 1 is a sectional view showing the configuration of an embodiment (first embodiment) of a refrigerator-freezer according to the present invention.
【図２】第１の実施例で使用される剥離層の構成を示す
断面図FIG. 2 is a cross-sectional view showing the structure of a release layer used in the first embodiment.
【図３】本発明に係る断熱構造体の一実施例（第２の実
施例）の構成を示す断面図FIG. 3 is a cross-sectional view showing the configuration of an embodiment (second embodiment) of the heat insulating structure according to the present invention.
【図４】第２の実施例におけるプラスチックスペーサの
構成を示す斜視図FIG. 4 is a perspective view showing the structure of a plastic spacer in the second embodiment.
【図５】本発明に係る断熱構造体の他の一実施例（第３
の実施例）の構成を示す断面図FIG. 5 is another embodiment (third embodiment) of the heat insulating structure according to the present invention.
Cross-sectional view showing the configuration of
【図６】第２又は第３の実施例におけるプラスチックス
ペーサの別の実施例（第４の実施例）の構成を示す斜視
図FIG. 6 is a perspective view showing the configuration of another embodiment (fourth embodiment) of the plastic spacer in the second or third embodiment.
【図７】本発明に係る断熱構造体のさらに別の一実施例
（第５の実施例）の構成を示す断面図FIG. 7 is a cross-sectional view showing the configuration of still another embodiment (fifth embodiment) of the heat insulating structure according to the present invention.
【図８】本発明に係る断熱構造体のさらに別の一実施例
（第６の実施例）の構成を示す断面図FIG. 8 is a cross-sectional view showing the configuration of still another embodiment (sixth embodiment) of the heat insulating structure according to the present invention.
【図９】一般的な冷凍冷蔵庫の外観を示す斜視図FIG. 9 is a perspective view showing the appearance of a general refrigerator-freezer.
【図１０】従来の冷凍冷蔵庫の断熱構造を示す図９のＡ
−Ａ断面図FIG. 10A of FIG. 9 showing a heat insulating structure of a conventional refrigerator-freezer.
-A sectional view
【図１１】従来の真空断熱構造体の構成を示す断面図FIG. 11 is a cross-sectional view showing the structure of a conventional vacuum heat insulating structure.
１ 内箱 ２ 外箱 ３ ウレタンフォーム ４ 真空断熱パック ５ 剥離層 ６ 剥離層 ７ ドア ８ ドアバック ９ ウレタンフォーム １０ 剥離層 １１ フッ素系樹脂及びシリコン粒子 １２ 樹脂 １３ フィルム容器 １３ａ ガスバリア層 １３ｂ 熱溶着層 １４ スペーサ １５ 貫通孔 １６ 通気孔 １７ セラミック板 １８ 通気孔 １９ プラスチック粒子 ２０ プラスチックピース ２１ 剥離層 ２２ 有機発泡材 ２３ 無機粉末 ２４ 容器 1 Inner Box 2 Outer Box 3 Urethane Foam 4 Vacuum Insulation Pack 5 Release Layer 6 Release Layer 7 Door 8 Door Back 9 Urethane Foam 10 Release Layer 11 Fluorine Resin and Silicon Particles 12 Resin 13 Film Container 13a Gas Barrier Layer 13b Thermal Adhesion Layer 14 Spacer 15 Through hole 16 Vent hole 17 Ceramic plate 18 Vent hole 19 Plastic particles 20 Plastic piece 21 Release layer 22 Organic foam material 23 Inorganic powder 24 Container
Claims (11)
と外箱との間の空間に埋設される部材の表面に剥離層を
設け、前記内箱と外箱との間の空間に発泡断熱材を充填
してなる冷凍冷蔵庫。1. A space between the inner box and the outer box, wherein a release layer is provided on the inner surface of each of the inner box and the outer box and on the surface of a member embedded in the space between the inner box and the outer box. Freezer-refrigerator made by filling foam insulation material.
くとも一部が、内部が真空に保たれた容器の中に断熱ス
ペーサー材を充填した断熱構造体であることを特徴とす
る請求項１記載の冷凍冷蔵庫。2. A heat insulating structure in which at least a part of the member embedded between the inner box and the outer box is filled with a heat insulating spacer material in a container whose inside is kept vacuum. The freezer-refrigerator according to claim 1.
シリコーンを含むことを特徴とする請求項１又は２記載
の冷凍冷蔵庫。3. The refrigerator / freezer according to claim 1, wherein the release layer contains at least a fluorine-based resin or silicone.
からなる粒子を樹脂内に分散させて形成されたことを特
徴とする請求項３記載の冷凍冷蔵庫。4. The refrigerator / freezer according to claim 3, wherein the release layer is formed by dispersing particles made of a fluororesin or silicone in the resin.
ックから成るスペーサ材を充填したことを特徴とする断
熱構造体。5. A heat insulating structure characterized in that a spacer material made of plastic is filled in a container whose inside is kept vacuum.
に有機発泡断熱材からなる層を形成したことを特徴とす
る請求項５記載の断熱構造体。6. The heat insulating structure according to claim 5, wherein a peeling layer is provided on the surface of the container, and a layer made of an organic foam heat insulating material is formed on the peeling layer.
プラスチックであることを特徴とする請求項５記載の断
熱構造体。7. The heat insulating structure according to claim 5, wherein the spacer material is a plastic having a water absorption rate of 0.5% or less.
状の粒子であることを特徴とする請求項５記載の断熱構
造体。8. The heat insulating structure according to claim 5, wherein the spacer material made of plastic is spherical particles.
壁により仕切られた平行に貫通した多数の貫通孔を有
し、かつ各貫通孔を仕切る隔壁には少なくとも１つの通
気孔が設けられていることを特徴とする請求項５記載の
断熱構造体。9. A spacer material made of plastic has a large number of through-holes that are partitioned by partition walls and penetrate in parallel, and at least one vent hole is provided in the partition walls that partition each through-hole. The heat insulating structure according to claim 5, which is characterized in that.
とする請求項９記載の断熱構造体。10. The heat insulating structure according to claim 9, wherein the shape of the through hole is a polygon.
各貫通孔が塞がれるように２枚の板に挟まれて配置され
たことを特徴とする請求項９記載の断熱構造体。11. A spacer material made of plastic is
The heat insulating structure according to claim 9, wherein the heat insulating structure is arranged by being sandwiched between two plates so that each through hole is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22081793A JP3204817B2 (en) | 1993-09-06 | 1993-09-06 | Refrigerator-freezer and its heat-insulating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22081793A JP3204817B2 (en) | 1993-09-06 | 1993-09-06 | Refrigerator-freezer and its heat-insulating structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0777383A true JPH0777383A (en) | 1995-03-20 |
| JP3204817B2 JP3204817B2 (en) | 2001-09-04 |
Family
ID=16757027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22081793A Expired - Fee Related JP3204817B2 (en) | 1993-09-06 | 1993-09-06 | Refrigerator-freezer and its heat-insulating structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3204817B2 (en) |
Cited By (10)
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|---|---|---|---|---|
| WO1998039156A1 (en) * | 1997-03-04 | 1998-09-11 | Bayer Aktiengesellschaft | Mouldings suitable for building refrigerators and process for manufacturing the same |
| JPH11159694A (en) * | 1997-11-28 | 1999-06-15 | Mitsubishi Electric Corp | Vacuum insulation panel, method of manufacturing the same, and insulation box body using the same |
| KR100390785B1 (en) * | 2001-03-08 | 2003-07-10 | 주식회사 엘지이아이 | Manufacturing method of case in a refrigerator |
| JP2005069657A (en) * | 2003-08-28 | 2005-03-17 | Matsushita Electric Ind Co Ltd | Vacuum thermal insulation material and its disassembly and recovery method |
| US7316125B2 (en) | 2001-06-04 | 2008-01-08 | Matsushita Refrigeration Company | Insulated box body, refrigerator having the box body, and method of recycling materials for insulated box body |
| EP1916465A1 (en) | 2006-10-26 | 2008-04-30 | Vestel Beyaz Esya Sanayi Ve Ticaret A.S. | Vacuumed heat barrier |
| CN103383176A (en) * | 2012-05-02 | 2013-11-06 | 三星电子株式会社 | Refrigerator and method of manufacturing door thereof |
| CN104764278A (en) * | 2015-04-22 | 2015-07-08 | 天津商业大学 | Vacuum thermal insulation house body used for ultralow temperature refrigeration house |
| JP2017150809A (en) * | 2017-04-04 | 2017-08-31 | 東芝ライフスタイル株式会社 | refrigerator |
| EP2427708B1 (en) * | 2009-05-04 | 2018-08-01 | BSH Hausgeräte GmbH | Domestic refrigeration appliance, and heat-insulating wall of a domestic refrigeration appliance |
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| WO1998039156A1 (en) * | 1997-03-04 | 1998-09-11 | Bayer Aktiengesellschaft | Mouldings suitable for building refrigerators and process for manufacturing the same |
| JPH11159694A (en) * | 1997-11-28 | 1999-06-15 | Mitsubishi Electric Corp | Vacuum insulation panel, method of manufacturing the same, and insulation box body using the same |
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| US7316125B2 (en) | 2001-06-04 | 2008-01-08 | Matsushita Refrigeration Company | Insulated box body, refrigerator having the box body, and method of recycling materials for insulated box body |
| JP2005069657A (en) * | 2003-08-28 | 2005-03-17 | Matsushita Electric Ind Co Ltd | Vacuum thermal insulation material and its disassembly and recovery method |
| EP1916465A1 (en) | 2006-10-26 | 2008-04-30 | Vestel Beyaz Esya Sanayi Ve Ticaret A.S. | Vacuumed heat barrier |
| EP2427708B1 (en) * | 2009-05-04 | 2018-08-01 | BSH Hausgeräte GmbH | Domestic refrigeration appliance, and heat-insulating wall of a domestic refrigeration appliance |
| CN103383176A (en) * | 2012-05-02 | 2013-11-06 | 三星电子株式会社 | Refrigerator and method of manufacturing door thereof |
| CN104764278A (en) * | 2015-04-22 | 2015-07-08 | 天津商业大学 | Vacuum thermal insulation house body used for ultralow temperature refrigeration house |
| JP2017150809A (en) * | 2017-04-04 | 2017-08-31 | 東芝ライフスタイル株式会社 | refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3204817B2 (en) | 2001-09-04 |
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