JPH11159695A - Vacuum heat insulating panel, manufacture thereof, and heat insulating case body using it - Google Patents
Vacuum heat insulating panel, manufacture thereof, and heat insulating case body using itInfo
- Publication number
- JPH11159695A JPH11159695A JP9327293A JP32729397A JPH11159695A JP H11159695 A JPH11159695 A JP H11159695A JP 9327293 A JP9327293 A JP 9327293A JP 32729397 A JP32729397 A JP 32729397A JP H11159695 A JPH11159695 A JP H11159695A
- Authority
- JP
- Japan
- Prior art keywords
- heat insulating
- packaging material
- core material
- vacuum
- auxiliary sheet
- 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
Landscapes
- Thermal Insulation (AREA)
- Refrigerator Housings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、冷蔵庫などの断
熱箱体の断熱材に利用する真空断熱パネル及びそれを用
いた断熱箱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 vacuum heat insulating panel used as a heat insulating material for a heat insulating box such as a refrigerator, and a heat insulating box using the same.
【０００２】[0002]
【従来の技術】図３は、例えば、特開昭５９−１４６９
９３号公報に示された従来の真空断熱パネルの断面構造
図である。図において、１はガスバリヤ性を有するシー
トである包材、２は真空状態にあってもその形状を保持
する芯材であり、３は芯材を挿入した包材を融着などの
方法によって接着（又はシール）して形成された端辺で
ある。2. Description of the Related Art FIG.
FIG. 1 is a sectional structural view of a conventional vacuum heat insulating panel disclosed in Japanese Patent Publication No. 93; In the figure, reference numeral 1 denotes a packaging material that is a sheet having gas barrier properties, 2 denotes a core material that retains its shape even in a vacuum state, and 3 denotes a bonding material into which the core material has been inserted by a method such as fusion. (Or a seal).
【０００３】包材１は、例えば、内部の真空を保持する
ためのアルミ箔を、表面の保護を目的としたナイロンや
ポリエチレンテレフタレートなどの耐傷性に優れた樹脂
と、包材同士の接着を目的としたポリエチレンなどの融
着が可能な樹脂とでサンドイッチした構造を有する。一
方、包材１の内部にある芯材２は、連続した気孔を有す
る発泡ウレタン等からなる。[0003] The packaging material 1 is formed, for example, by bonding an aluminum foil for maintaining an internal vacuum to a resin having excellent scratch resistance, such as nylon or polyethylene terephthalate, for protecting the surface, and bonding the packaging materials to each other. It has a structure sandwiched with a fusible resin such as polyethylene. On the other hand, the core material 2 inside the packaging material 1 is made of urethane foam having continuous pores or the like.
【０００４】次に、従来の真空断熱パネルの製造工程を
図４に示す工程図を用いて述べる。まず、予め三方向を
接着した包材１に連続した気孔を有する芯材２を、必要
に応じて各種ガスを吸着するゲッター剤（図示せず）と
ともに挿入し、さらにこれを真空融着機４の槽内に装着
する。真空融着機は、槽内の真空度を１０0 〜１０-4Ｔ
ｏｒｒ程度に確保できるようになっており、ヒーター５
及びシール用加圧装置６を利用して、真空雰囲気中で融
着によって包材１の挿入口の接着を行う。さらに、槽内
を大気状態に戻して包材１を芯材２に密着させた状態の
真空断熱パネルを取り出すことで完了する。Next, a manufacturing process of a conventional vacuum insulation panel will be described with reference to a process chart shown in FIG. First, a core material 2 having continuous pores is inserted into a packaging material 1 previously bonded in three directions together with a getter agent (not shown) for adsorbing various gases, if necessary. Install in the tank. Vacuum fusing machine, a vacuum level in the tank 10 0 to 10 -4 T
orr, and the heater 5
Using the pressure device 6 for sealing, the insertion opening of the packaging material 1 is bonded by fusion in a vacuum atmosphere. Further, the process is completed by returning the inside of the tank to the atmospheric state and taking out the vacuum heat insulating panel in a state where the packaging material 1 is in close contact with the core material 2.
【０００５】[0005]
【発明が解決しようとする課題】以上のようにして製造
された従来の真空断熱パネルは、２枚の包材を単に張り
合わせているので、その四隅にしわが発生し、そこから
シールが不完全になる恐れがあった。また、包材１の接
着により形成された端辺が、真空断熱パネルの面方向の
四方に張り出した状態となるため、この真空断熱パネル
を断熱箱体の内箱と外箱の間隙に配設して行う発泡ウレ
タンの充填の際には、その端辺が大きな支障になってい
た。In the conventional vacuum insulation panel manufactured as described above, since two pieces of packaging material are simply bonded together, wrinkles are generated at the four corners, and the seal is incomplete from there. There was a fear. In addition, since the edges formed by bonding the packaging material 1 project in four directions in the surface direction of the vacuum heat insulating panel, the vacuum heat insulating panel is disposed in the gap between the inner box and the outer box of the heat insulating box. When the urethane foam is filled in this way, the edges are a major obstacle.
【０００６】一方、これを改善する目的で、特開昭６１
−９９０８７号公報や特開昭６２−１７８８６７号公報
に開示されたような、シールを合わせ貼りでなく背貼り
（封筒貼り）にして、シール部が厚さ部分にこないよう
に、かつ、２対の相対する端辺のうちの少なくとも一対
の張り出しを無くする発明が提案されている。しかしこ
れらの方法では、包材の重なり合う数が多くなり、これ
らの重なり合った段差部分では接着によって完全にシー
ルを行うことが極めて困難で、シールの不完全な部分は
外部と貫通し易すくなる。そして、もし外部と貫通した
場合には、外部にある空気や水蒸気などのガス侵入が生
じ、短期間のうちに致命的な断熱性能の悪化を招くこと
になる。On the other hand, for the purpose of improving this,
Japanese Patent Application Laid-Open No. 99087/1990 and Japanese Patent Application Laid-Open No. Sho 62-178867, the seal is attached to the back rather than to the adhesive (envelope attached) so that the seal does not come to the thickness, Has been proposed which eliminates at least a pair of overhangs among the opposing edges. However, in these methods, the number of overlapping packaging materials is increased, and it is extremely difficult to completely seal the overlapping step portions by bonding, and the incompletely sealed portions are easily penetrated to the outside. If the gas penetrates with the outside, gas such as air and water vapor existing outside will enter, and fatal deterioration of heat insulation performance will be caused in a short period of time.
【０００７】従って、この発明は上記のような問題を解
決するためになされたもので、断熱箱体の製造の際に、
発泡ウレタンの充填に支障を来すことがなく、しかもシ
ールの不完全な欠陥部分を生じさせない、真空断熱パネ
ル及びその製造方法を提供すること、並びにそれを用い
た断熱箱体を得ることを目的とする。[0007] Accordingly, the present invention has been made to solve the above-mentioned problems.
An object of the present invention is to provide a vacuum heat insulating panel and a method for manufacturing the same, which do not hinder the filling of urethane foam and do not cause imperfect seal portions, and to obtain a heat insulating box using the same. And
【０００８】[0008]
【課題を解決するための手段】この発明の第１の態様
は、板状の多孔質物質である芯材を、ガスバリア性を有
する包材で包んでなる真空断熱パネルにおいて、前記包
材は、前記芯材の厚さ面の左右端に、内側に折り重ねら
れた内折部を有し、前記左端の内折部と前記右端の内折
部の間に、前記内側に折り重ねられた分の包材の厚みに
略相当する厚さを有する補助シートが挿入され、前記芯
材の上下の包材が該補助シートを介して接着される構造
とする。According to a first aspect of the present invention, there is provided a vacuum insulation panel comprising a core material, which is a plate-like porous material, wrapped by a wrapping material having a gas barrier property. On the left and right ends of the thickness surface of the core material, there are inwardly folded portions inwardly folded, and between the inwardly folded portion on the left end and the inwardly folded portion on the right end, a portion folded inwardly. An auxiliary sheet having a thickness substantially equivalent to the thickness of the packaging material is inserted, and the packaging material above and below the core material is bonded through the auxiliary sheet.
【０００９】この発明の第２の態様は、前記内折部が、
前記芯材の対向する２つの厚さ面の左右端にあり、前記
芯材の他の厚さ面には前記包材の接着部が位置しない構
造とする。[0009] In a second aspect of the present invention, the inwardly folded portion includes:
The structure has a structure in which the bonding portion of the packaging material is not located on the left and right ends of two opposing thickness surfaces of the core material and on the other thickness surface of the core material.
【００１０】この発明の第３の態様は、前記補助シート
が包材に使用されたものと同種の物質を用いてなる。In a third aspect of the present invention, the auxiliary sheet is made of the same substance as that used for the packaging material.
【００１１】この発明の第４の態様は、前記補助シート
を金属とする。According to a fourth aspect of the present invention, the auxiliary sheet is made of metal.
【００１２】この発明の第５の態様は、板状の多孔質物
質である芯材を、ガスバリア性を有する包材で包んで成
る真空断熱パネルの製造方法において、前記包材を、前
記芯材の対向する２つの厚さ面に対応する部分に開口部
を備えて前記芯材に密着する筒状とし、前記開口部の左
右端を内側に折り重ねて内折部とし、前記開口部の左端
の内折部と右端の内折部との間に補助シートを挿入し
て、上下の前記包材を該補助シートを介して接着する。According to a fifth aspect of the present invention, there is provided a method for manufacturing a vacuum insulation panel comprising a core material, which is a plate-like porous material, wrapped with a packaging material having gas barrier properties. An opening at a portion corresponding to the two opposing thickness surfaces, a cylindrical shape that is in close contact with the core material, and left and right ends of the opening are folded inward to form an inward folded portion; a left end of the opening An auxiliary sheet is inserted between the inner folded portion and the right inner folded portion, and the upper and lower packaging materials are bonded via the auxiliary sheet.
【００１３】この発明の第６の態様は、前記の包材を筒
状にする工程を、芯材の周囲を一枚の包材で覆って弛み
のない状態とした後、前記芯材の厚さ面以外の面上で、
前記包材の内面を同士を接着して行う。In a sixth aspect of the present invention, the step of making the packaging material into a tubular shape is such that the core material is covered with a single packaging material so as not to be slackened, and then the thickness of the core material is reduced. On a surface other than the surface,
The inner surfaces of the packaging material are bonded to each other.
【００１４】この発明の第７の態様は、板状の多孔質物
質である芯材を、ガスバリア性を有する包材で包んでな
る真空断熱パネルであって、前記包材は、前記芯材の厚
さ面の左右端に、内側に折り重ねられた内折部を有し、
前記左端の内折部と前記右端の内折部の間に、前記内側
に折り重ねられた分の包材の厚みに略相当する厚さを有
する補助シートが挿入され、前記芯材の上下の包材が該
補助シートを介して接着されてなる真空断熱パネルを、
断熱壁内に配設した断熱箱体である。According to a seventh aspect of the present invention, there is provided a vacuum heat insulating panel comprising a core material, which is a plate-like porous material, wrapped with a packaging material having gas barrier properties. On the left and right ends of the thickness surface, there is an inward folded part folded inside,
An auxiliary sheet having a thickness substantially equivalent to the thickness of the packaging material folded inward is inserted between the inner folded portion at the left end and the inner folded portion at the right end, and the upper and lower portions of the core material A vacuum insulation panel in which a packaging material is adhered through the auxiliary sheet,
It is a heat insulation box disposed in a heat insulation wall.
【００１５】この発明の第８の態様は、前記接着によっ
て形成された端辺が、該真空断熱パネルの外周部に添っ
て折り曲げて固定された状態で配設されたことを特徴と
する請求項７に記載の断熱箱体である。According to an eighth aspect of the present invention, the edge formed by the bonding is disposed in a state of being bent and fixed along the outer peripheral portion of the vacuum heat insulating panel. 8. A heat insulating box according to item 7.
【００１６】[0016]
【発明の実施の形態】実施の形態１ （１）真空断熱パネルの製造 図１は、この発明に係る真空断熱パネルの製造工程を示
す工程図である。ここで、包材１は、ナイロン、アルミ
箔、ポリエチレンの各層からなる多層シート、芯材２は
連続気泡構造の発泡ウレタン成形品とする。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 (1) Manufacturing of Vacuum Insulated Panel FIG. 1 is a process diagram showing a manufacturing process of a vacuum insulated panel according to the present invention. Here, the packaging material 1 is a multilayer sheet composed of layers of nylon, aluminum foil, and polyethylene, and the core material 2 is a molded urethane foam having an open-cell structure.
【００１７】まず、芯材２の最も広い面である上面と下
面を含む４面を包材１で覆い、芯材２の上面で包材１を
弛みのない状態にしてその内面同士を接着して筒状の包
材を形成する（ａ）。次に、この包材１の開口部であ
る、芯材２の対向する２つの厚さ面の左右端において、
矢印Ａ方向に力を与えて包材１を内側に折り重ねた内折
部（１ａ、１ｂ、１ｃ、１ｄ）を形成し（ｂ）、左右の
内折部の間に補助シート１２を挿入するとともに、芯材
２の厚さ面でかつ芯材端辺からの等距離上にて、矢印Ｂ
方向に力を加えて、芯材２上下の包材１を補助シート１
２を介して重ね合わせる（ｃ）。そして、この２つの開
口部のうちの一方を接着する。なお、補助シート１２は
あらかじめ包材開口部の上下包材のどちらかの所定の位
置に熱融着固定しておいても良い。First, four surfaces including the upper surface and the lower surface, which are the widest surfaces of the core material 2, are covered with the packaging material 1. The packaging material 1 is not loosened on the upper surface of the core material 2, and the inner surfaces thereof are bonded to each other. To form a cylindrical packaging material (a). Next, at the left and right ends of two opposing thickness surfaces of the core material 2, which are openings of the packaging material 1,
A force is applied in the direction of arrow A to form an inward folded portion (1a, 1b, 1c, 1d) in which the packaging material 1 is folded inward (b), and the auxiliary sheet 12 is inserted between the left and right inward folded portions. At the same time, the arrow B on the thickness surface of the core material 2 and at the same distance from the edge of the core material
Applying a force in the direction, the core material 2 and the packaging material 1 above and below the auxiliary material 1
2 through (c). Then, one of the two openings is bonded. In addition, the auxiliary sheet 12 may be heat-sealed and fixed to a predetermined position of one of the upper and lower packaging materials at the packaging material opening in advance.
【００１８】さらに、前述のようにして調整した芯材２
入りの包材１を真空パネル成形機に装填して残りの開口
部を接着する。つまり、真空引きのための残った開口部
が上下ヒーター５の間にくるように装着した後（ｄ）、
真空パネル成形機４内を所定の真空度にし、その時点で
シール用加圧装置６を用いて開口部を固定し、包材１を
補助シール１２とともに熱シールする（ｅ）。さらに、
ヒーター５を切って冷却した後、真空を解放して取り出
せば、２辺に端辺３を有した真空断熱パネルが得られる
（ｆ）。ここで、包材内部の真空度は１×１０-1Ｔｏｒ
ｒとした。また、用いた真空ポンプは、排気能力が９５
０Ｌ／ｍｉｎ、到達真空度が１０-4Ｔｏｒｒの能力を有
するロータリー型ポンプである。Further, the core material 2 adjusted as described above
The packaging material 1 containing the material is loaded into a vacuum panel forming machine, and the remaining openings are bonded. That is, after mounting so that the remaining opening for evacuation is located between the upper and lower heaters 5 (d),
The inside of the vacuum panel forming machine 4 is evacuated to a predetermined degree of vacuum, at which time the opening is fixed using the sealing pressurizing device 6, and the packaging material 1 is heat-sealed together with the auxiliary seal 12 (e). further,
After cooling by turning off the heater 5, if the vacuum is released and taken out, a vacuum heat insulating panel having two ends 3 at the side is obtained (f). Here, the degree of vacuum inside the packaging material is 1 × 10 −1 Torr.
r. The vacuum pump used has an exhaust capacity of 95.
This is a rotary pump having a capacity of 0 L / min and an ultimate vacuum of 10 -4 Torr.
【００１９】（２）真空断熱パネルの評価 このようにして得られた真空断熱パネルを、５０℃で３
日間加熱劣化した後の包材内の真空度と、真空パネル成
形機内で熱シールしたシール部分の引き裂き強度に関し
て評価を行った。その測定条件は下記の通りである。 包材内の真空度；真空断熱パネルを気密容器内に固定
し、容器内を９５０Ｌ／ｍｉｎの排気速度で真空引きし
ながら、レーザー式変位計にて真空断熱パネルの中央部
の膨張変位が１．０ｍｍを超えたときの容器内真空度を
包材内の真空度とした。 引き裂き強度； ＪＩＳ Ｚ０２３７に準じた。(2) Evaluation of Vacuum Insulated Panel The vacuum insulated panel obtained in this way was
Evaluation was made on the degree of vacuum in the packaging material after heat degradation for one day and the tear strength of the sealed portion heat sealed in the vacuum panel forming machine. The measurement conditions are as follows. The degree of vacuum in the packaging material; while the vacuum insulation panel is fixed in an airtight container, and the inside of the container is evacuated at an evacuation speed of 950 L / min, the expansion displacement at the center of the vacuum insulation panel is 1 using a laser displacement meter. The degree of vacuum in the container when it exceeded 0.0 mm was defined as the degree of vacuum in the packaging material. Tear strength: According to JIS Z0237.
【００２０】実施例１ 芯材には、厚さが２０ｍｍ、一辺の長さが２００ｍｍの
正方形である連続気泡構造の発泡ウレタン成形品を用
い、１２０℃の温度で２時間以上の乾燥を行った後に使
用した。また、包材である多層シートは、熱シール層が
ポリエチレンである厚さ８０ミクロンの多層シートを使
用した。そして、補助シートに、厚さ１６０ミクロンの
ポリエチレンシートを用いた真空断熱パネルを実施例１
として、上記の評価を行い、その結果を表１に記した。Example 1 As a core material, a urethane foam molded article having an open cell structure having a square shape with a thickness of 20 mm and a side length of 200 mm was dried at a temperature of 120 ° C. for 2 hours or more. Used later. Further, as the multilayer sheet as the packaging material, a multilayer sheet having a thickness of 80 μm in which the heat sealing layer was made of polyethylene was used. Then, a vacuum insulation panel using a polyethylene sheet having a thickness of 160 μm as an auxiliary sheet was obtained in Example 1.
The above evaluation was performed, and the results are shown in Table 1.
【００２１】比較例１、比較例２ 補助シートを挿入しない真空断熱パネルを比較例１と
し、さらに、図３に示した従来の真空断熱パネルを比較
例２として、同様の評価を行い、その結果を表１に併記
した。Comparative Example 1 and Comparative Example 2 The same evaluation was performed using the vacuum insulation panel without the auxiliary sheet as Comparative Example 1 and the conventional vacuum insulation panel shown in FIG. 3 as Comparative Example 2. The results were as follows. Are also shown in Table 1.
【００２２】[0022]
【表１】 [Table 1]
【００２３】表１から、真空断熱パネルを加熱劣化させ
た後の包材内真空度は、補助シートを設けないで端辺の
シールを行った比較例１では大きな低下を示したのに対
し、この発明である実施例１ではほとんど低下すること
なく、安定して真空度を維持していることが確認でき
た。一方、シール部分の引き裂き強度も、補助シートを
挿入しない比較例１では大きく低下した。これは、シー
ル部分の固定において、両端の折り返し部分の厚さと中
央部分の厚さの差が１６０ミクロンあったことで、圧縮
力が十分に得られないままに溶着されたことが原因と考
えられる。なお、実施例１と比較例２について、それら
の真空度や引き裂き強度に大きな相異はない。しかし、
本発明の真空断熱パネルは、包材のシールにより形成さ
れる張り出し端辺の数が、比較例２のような従来のもの
と比較して、四辺から二辺と減少する点で優れている。From Table 1, the degree of vacuum in the packaging material after heat-deteriorating the vacuum insulation panel showed a large decrease in Comparative Example 1 in which the edge was sealed without providing the auxiliary sheet. In Example 1 of the present invention, it was confirmed that the degree of vacuum was stably maintained without being substantially reduced. On the other hand, the tear strength of the seal portion was significantly reduced in Comparative Example 1 in which the auxiliary sheet was not inserted. This is considered to be due to the fact that the difference between the thickness of the folded portion at both ends and the thickness of the central portion was 160 microns in the fixing of the seal portion, so that the welding was performed without obtaining a sufficient compressive force. . In addition, there is no significant difference in the degree of vacuum and tear strength between Example 1 and Comparative Example 2. But,
The vacuum insulation panel of the present invention is superior in that the number of overhanging edges formed by the sealing of the packaging material is reduced from four sides to two sides as compared with the conventional one as in Comparative Example 2.
【００２４】実施の形態２ （１）断熱箱体の製造 図２は、先に説明したこの発明に係る真空断熱パネルを
利用した断熱箱体の構造説明図である。この断熱箱体
は、真空断熱パネル７を薄鋼板の折り曲げ加工によって
得られた外箱８上に接着剤９を介して配設し、その後、
ＡＢＳ樹脂の真空成形品である内箱１０を外箱８と嵌合
させ、さらに、残りの箱体外殻をなす部品、冷媒回路部
品、および内装品の取り付け部品など（図示せず）を所
定の位置に取り付けて断熱箱体の外殻を形成する。次
に、この断熱箱体外殻を、発泡ウレタンの発泡圧によっ
て変形しないよう発泡ジグに挿入し固定した後、内箱と
外箱の間隙に、独立気泡を有する発泡ウレタン１１を注
入、充填する。そして、所定の硬化に要する時間を経た
後、発泡ジグを解放して取り出せば、図２に示すような
横断面部における壁構造を備えた断熱箱体が得られる。Embodiment 2 (1) Manufacture of Heat Insulation Box FIG. 2 is a structural explanatory view of a heat insulation box using the above-described vacuum heat insulation panel according to the present invention. In this heat insulating box, a vacuum heat insulating panel 7 is disposed on an outer box 8 obtained by bending a thin steel plate via an adhesive 9, and thereafter,
The inner box 10, which is a vacuum molded product of ABS resin, is fitted with the outer box 8, and the remaining parts constituting the outer shell of the box, the refrigerant circuit parts, and the mounting parts for the interior parts (not shown) are specified. To form the outer shell of the heat insulating box. Next, the outer shell of the heat insulating box is inserted and fixed in a foam jig so as not to be deformed by the foaming pressure of the urethane foam, and then, the gap between the inner box and the outer box is filled with urethane foam 11 having closed cells. . Then, after a predetermined time required for curing has elapsed, the foam jig is released and taken out to obtain an insulated box having a wall structure in a cross section as shown in FIG.
【００２５】実施例３ 実施の形態１に示した真空断熱パネルを用い、その包材
の端辺を、真空断熱パネルの外周に添って折り曲げ固定
したものを断熱箱体の断熱壁内に配設し、上記の方法に
より得た断熱箱体である４００Ｌクラスの冷蔵庫を組み
立てて、実施例３とした。Example 3 The vacuum insulation panel shown in Embodiment 1 was used, and the end of the packaging material was bent and fixed along the outer periphery of the vacuum insulation panel, which was disposed in the heat insulation wall of the heat insulation box. Then, a 400 L class refrigerator, which was a heat insulating box obtained by the above method, was assembled to obtain a third embodiment.
【００２６】比較例３、比較例４ また、図３に示した従来の四辺に張り出した端辺を有す
る真空断熱パネルを同様の位置に配設した断熱箱体を比
較例３とし、外箱と内箱の空隙すべてを独立気泡の硬質
ポリウレタンフォームのみで充填した断熱箱体を比較例
４とした。Comparative Example 3 and Comparative Example 4 Further, a heat insulating box body in which the conventional vacuum heat insulating panel shown in FIG. A heat insulating box in which all the voids in the inner box were filled with only closed-cell hard polyurethane foam was used as Comparative Example 4.
【００２７】（２）断熱箱体の評価 このようにして得られた各断熱箱体にコンプレッサーを
含む冷媒回路を設け、さらにすべての断熱箱体に同じ断
熱性能を有する扉を装着して冷蔵庫を完成させる。断熱
箱体の断熱性能は、その冷蔵庫をＪＩＳ−Ｃ９６０７に
おける消費電力Ｂ測定法に準拠する消費電力量で判断す
る。また、これらの箱体を解体し、真空断熱パネル周辺
の発泡ウレタンの充填状態を目視確認した。その結果を
表２に示す。(2) Evaluation of Insulated Boxes A refrigerant circuit including a compressor is provided in each of the thus obtained insulated boxes, and doors having the same heat insulating performance are attached to all of the insulated boxes to form a refrigerator. Finalize. The heat insulating performance of the heat insulating box is determined by the power consumption of the refrigerator based on the power consumption B measuring method in JIS-C9607. Further, these boxes were disassembled, and the filling state of the urethane foam around the vacuum insulation panel was visually checked. Table 2 shows the results.
【００２８】[0028]
【表２】 [Table 2]
【００２９】この発明の真空断熱パネルを用いた実施例
３の冷蔵庫の消費電力量は、硬質ポリウレタンフォーム
のみの箱体を用いた比較例４に比べて明らかに少なく、
断熱箱体としての性能が優れていることが確認できた。
また、従来の真空断熱パネルを用いた比較例３と比べて
も、消費電力量は少ない。これは、発泡ウレタンの充填
状態が、ボイドなどの空隙を生成することなく良好にな
ったことに加え、包材の張り出し端辺を面方向から排除
したことによって過剰な伝熱も防止されたものと推定さ
れる。さらに、この発明による真空断熱パネルは、包材
の迫り出し端辺を従来の四辺から二辺にしているので、
断熱箱体の製造時、端辺の折り曲げ固定の工程が従来の
ものより簡略化できる点でも優れている。The power consumption of the refrigerator of Example 3 using the vacuum insulation panel of the present invention is clearly smaller than that of Comparative Example 4 using a box made of only rigid polyurethane foam.
It was confirmed that the performance as a heat insulating box was excellent.
Also, the power consumption is smaller than that of Comparative Example 3 using the conventional vacuum heat insulating panel. This is because the filling state of the urethane foam was improved without generating voids and other voids, and excess heat transfer was prevented by removing the overhanging edges of the packaging material from the surface direction. It is estimated to be. In addition, the vacuum insulation panel according to the present invention has the protruding edges of the packaging material changed from the conventional four sides to two sides,
It is also excellent in that the process of bending and fixing the edges at the time of manufacturing the heat-insulating box body can be simplified as compared with the conventional one.
【００３０】以上、ここでは、断熱箱体の使用例を冷蔵
庫を取って説明したが、これに限定されるものではな
く、例えば、車載用小型冷蔵庫やプレハブ式簡易冷蔵
庫、保冷車やハイプや建物の保温材など、保温及び保冷
製品の断熱用部品としての応用も可能であり、その要旨
を脱し得ない範囲で種々変形して実施することができ
る。In the above, the use example of the heat-insulating box has been described taking a refrigerator as an example. However, the present invention is not limited to this. For example, a small refrigerator mounted on a vehicle, a simple prefabricated refrigerator, a refrigerated vehicle, a hype or a building It can be applied as a heat insulating material such as a heat insulating material, and can be variously modified and implemented without departing from the gist thereof.
【００３１】[0031]
【発明の効果】請求項１に係る真空断熱パネルによれ
ば、包材の端部の重なり合いにもかかわらず、それによ
る段差部分を解消できるので、良質な接着が得られ、従
ってシール状態の不完全さが防止されて、高い信頼性を
達成できる。According to the vacuum heat insulating panel of the first aspect, the stepped portion due to the overlapping of the end portions of the packaging material can be eliminated, so that good quality bonding can be obtained, and therefore, the sealing state is not good. Completeness is prevented and high reliability can be achieved.
【００３２】請求項２に係る真空断熱パネルによれば、
包材の接着によって形成される端辺が、真空断熱パネル
の面方向では二辺のみとなったので、これを使用する断
熱箱体の品質及び製造の改善に寄与できる。According to the vacuum heat insulating panel of the second aspect,
Since the edges formed by bonding the packaging material are only two sides in the plane direction of the vacuum heat insulating panel, it can contribute to the improvement of the quality and manufacturing of the heat insulating box using the same.
【００３３】請求項３に係る真空断熱パネルによれば、
補助シートを包材に使用されたものと同種の物質を用い
たので、補助シートと包材との良好な接着が可能とな
る。According to the vacuum heat insulating panel of the third aspect,
Since the same kind of substance as that used for the packaging material is used for the auxiliary sheet, good adhesion between the auxiliary sheet and the packaging material can be achieved.
【００３４】請求項４に係る真空断熱パネルによれば、
補助シートに金属を用いることにより、端辺を伝って外
部から侵入するガスの量を有効に削減できる。According to the vacuum heat insulating panel of the fourth aspect,
By using metal for the auxiliary sheet, the amount of gas entering from the outside along the edge can be effectively reduced.
【００３５】請求項５に係る真空断熱パネルの製造方法
によれば、包材の端部の重なり合いにもかかわらず、そ
れによる段差部分を解消でき、良質な接着が得られ、従
ってシール状態の不完全さが防止されて、高い信頼性を
達成できる。また、包材の接着によって形成される端辺
が、真空断熱パネルの面方向では二辺のみとなるので、
端辺が真空断熱パネルの面方向に張り出すことによって
生じる問題を少なくできる。According to the method for manufacturing a vacuum heat insulating panel according to the fifth aspect, despite the overlapping of the ends of the packaging material, the step caused by the overlapping can be eliminated, and good-quality bonding can be obtained. Completeness is prevented and high reliability can be achieved. Also, since the edges formed by bonding the packaging material are only two sides in the plane direction of the vacuum heat insulating panel,
The problem which arises when an edge protrudes in the surface direction of a vacuum heat insulation panel can be reduced.
【００３６】請求項６に係る真空断熱パネルの製造方法
によれば、包材の接着により形成される端面が、真空断
熱パネルの面方向に張り出すことを避けることができ
る。According to the method of manufacturing a vacuum heat insulating panel according to the sixth aspect, it is possible to prevent the end face formed by bonding the packaging material from protruding in the surface direction of the vacuum heat insulating panel.
【００３７】請求項７に係る断熱箱体は、良質な接着、
すなわちシール状態が良好な高い信頼性の真空断熱パネ
ルを使用するため、その断熱性能が向上する。The heat insulating box according to the seventh aspect is characterized in that it has good adhesion,
That is, since a highly reliable vacuum heat insulating panel with a good sealing state is used, its heat insulating performance is improved.
【００３８】請求項８に係る断熱箱体は、真空断熱パネ
ルの接着により形成された端辺を、真空断熱パネルの外
周部に添って折り曲げて固定した状態で配設したので、
箱体外殻内を充填する発泡ウレタンの流動を阻害してボ
イドなどを生成することがなくなり、また、包材を伝わ
って伝熱する面積を抑制できるので、断熱性能が一層向
上する。[0038] In the heat insulation box according to the eighth aspect, the edge formed by bonding the vacuum heat insulation panel is disposed in a state of being bent and fixed along the outer peripheral portion of the vacuum heat insulation panel.
Since the flow of urethane foam filling the outer shell of the box is not hindered and voids and the like are not generated, and the area of heat transmission through the packaging material can be suppressed, the heat insulation performance is further improved.
【図１】 この発明に係る真空断熱パネルの製造工程を
示す工程図である。FIG. 1 is a process chart showing a manufacturing process of a vacuum heat insulating panel according to the present invention.
【図２】 この発明に係る真空断熱パネルを用いた断熱
箱体横断面の構造説明図である。FIG. 2 is a structural explanatory view of a cross section of a heat insulating box using a vacuum heat insulating panel according to the present invention.
【図３】 従来の真空断熱パネルの断面図である。FIG. 3 is a cross-sectional view of a conventional vacuum insulation panel.
【図４】 従来の真空断熱パネルの製造工程を示す工程
図である。FIG. 4 is a process diagram showing a manufacturing process of a conventional vacuum insulation panel.
１ 包材、２ 芯材、３ シールにより形成された端
辺、４ 真空パネル成形機、５ ヒーター、６ シール
用加圧装置、７ 真空断熱パネル、８ 外箱、９接着
剤、１０ 内箱、１１ 発泡ウレタン、１２ 補助シー
ト。1 packaging material, 2 core materials, 3 edges formed by seal, 4 vacuum panel forming machine, 5 heater, 6 seal pressurizing device, 7 vacuum insulation panel, 8 outer box, 9 adhesive, 10 inner box, 11 urethane foam, 12 auxiliary sheet.
Claims (8)
リア性を有する包材で包んでなる真空断熱パネルにおい
て、 前記包材は、前記芯材の厚さ面の左右端に、内側に折り
重ねられた内折部を有し、 前記左端の内折部と前記右端の内折部の間に、前記内側
に折り重ねられた分の包材の厚みに略相当する厚さを有
する補助シートが挿入され、前記芯材の上下の包材が該
補助シートを介して接着されていることを特徴とする真
空断熱パネル。1. A vacuum insulation panel comprising a core material, which is a plate-shaped porous material, wrapped with a packaging material having a gas barrier property, wherein the packaging material is provided on the left and right ends of the thickness surface of the core material. And has a thickness substantially equivalent to the thickness of the packaging material folded inward between the left-side inwardly folded portion and the right-side inwardly folded portion. A vacuum heat insulating panel, wherein an auxiliary sheet is inserted, and packaging materials above and below the core material are bonded via the auxiliary sheet.
の厚さ面の左右端にあり、前記芯材の他の厚さ面には前
記包材の接着部が位置しない構造としたことを特徴とす
る請求項１記載の真空断熱パネル。2. The structure according to claim 1, wherein the inner folded portion is located at left and right ends of two opposing thickness surfaces of the core material, and the bonding portion of the packaging material is not located on another thickness surface of the core material. The vacuum insulation panel according to claim 1, wherein:
のと同種の物質を用いてなることを特徴とする請求項１
又は２に記載の真空断熱パネル。3. The auxiliary sheet is made of the same substance as that used for the packaging material.
Or the vacuum insulation panel according to 2.
徴とする請求項１又は２に記載の真空断熱パネル。4. The vacuum insulation panel according to claim 1, wherein the auxiliary sheet is made of metal.
リア性を有する包材で包んで成る真空断熱パネルの製造
方法において、 前記包材を、前記芯材の対向する２つの厚さ面に対応す
る部分に開口部を備えて前記芯材に密着する筒状とし、 前記開口部の左右端を内側に折り重ねて内折部とし、前
記開口部の左端の内折部と右端の内折部との間に補助シ
ートを挿入して、上下の前記包材を該補助シートを介し
て接着することを特徴とする真空断熱パネルの製造方
法。5. A method for manufacturing a vacuum insulation panel comprising a core material, which is a plate-shaped porous material, wrapped with a packaging material having gas barrier properties, wherein the packaging material has two opposite thicknesses of the core material. An opening at a portion corresponding to the surface, a tubular shape that is in close contact with the core material, and left and right ends of the opening are folded inward to form an inward folded portion; A method for manufacturing a vacuum heat insulating panel, comprising inserting an auxiliary sheet between the inner folding portion and the upper and lower packaging materials via the auxiliary sheet.
周囲を一枚の包材で覆って弛みのない状態とした後、前
記芯材の厚さ面以外の面上で、前記包材の内面を同士を
接着して行うことを特徴とする請求項５に記載の真空断
熱パネルの製造方法。6. The step of forming the packaging material into a cylindrical shape includes, after covering the periphery of the core material with a single packaging material so that there is no slack, on a surface other than the thickness surface of the core material. 6. The method according to claim 5, wherein the inner surfaces of the packaging material are bonded to each other.
リア性を有する包材で包んでなる真空断熱パネルであっ
て、前記包材は、前記芯材の厚さ面の左右端に、内側に
折り重ねられた内折部を有し、前記左端の内折部と前記
右端の内折部の間に、前記内側に折り重ねられた分の包
材の厚みに略相当する厚さを有する補助シートが挿入さ
れ、前記芯材の上下の包材が該補助シートを介して接着
されてなる真空断熱パネルを、断熱壁内に配設した断熱
箱体。7. A vacuum insulation panel comprising a core material, which is a plate-like porous material, wrapped with a packaging material having gas barrier properties, wherein the packaging material is provided at left and right ends of a thickness surface of the core material. Having an inward folded portion inwardly folded, and a thickness substantially corresponding to the thickness of the inwardly folded packaging material between the leftward inwardly folded portion and the rightmost inwardly folded portion. A heat insulating box in which a vacuum heat insulating panel in which an auxiliary sheet having the following structure is inserted and upper and lower packaging materials of the core material are adhered through the auxiliary sheet is disposed in the heat insulating wall.
真空断熱パネルの外周部に添って折り曲げて固定された
状態で配設されたことを特徴とする請求項７に記載の断
熱箱体。8. The heat-insulating box body according to claim 7, wherein the edge formed by the bonding is disposed so as to be bent and fixed along an outer peripheral portion of the vacuum heat-insulating panel. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32729397A JP4042004B2 (en) | 1997-11-28 | 1997-11-28 | Vacuum insulation panel, method for manufacturing the same, and insulation box using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32729397A JP4042004B2 (en) | 1997-11-28 | 1997-11-28 | Vacuum insulation panel, method for manufacturing the same, and insulation box using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11159695A true JPH11159695A (en) | 1999-06-15 |
| JP4042004B2 JP4042004B2 (en) | 2008-02-06 |
Family
ID=18197518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32729397A Expired - Fee Related JP4042004B2 (en) | 1997-11-28 | 1997-11-28 | Vacuum insulation panel, method for manufacturing the same, and insulation box using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4042004B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100389397B1 (en) * | 2000-10-04 | 2003-06-27 | 주식회사 엘지이아이 | Composite vacuum insulation panel and product method that |
| CN103557403A (en) * | 2013-10-15 | 2014-02-05 | 潍坊纳博欧化工科技有限公司 | Side-sealed Vacuum insulation panel and sealing method thereof |
| CN104712885A (en) * | 2013-12-11 | 2015-06-17 | 富士电机株式会社 | Heat insulation board component |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022092952A1 (en) * | 2020-11-02 | 2022-05-05 | Lg Electronics Inc. | Vacuum adiabatic body |
-
1997
- 1997-11-28 JP JP32729397A patent/JP4042004B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100389397B1 (en) * | 2000-10-04 | 2003-06-27 | 주식회사 엘지이아이 | Composite vacuum insulation panel and product method that |
| CN103557403A (en) * | 2013-10-15 | 2014-02-05 | 潍坊纳博欧化工科技有限公司 | Side-sealed Vacuum insulation panel and sealing method thereof |
| CN104712885A (en) * | 2013-12-11 | 2015-06-17 | 富士电机株式会社 | Heat insulation board component |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4042004B2 (en) | 2008-02-06 |
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