JP3108118B2 - Method of manufacturing heat insulating structure - Google Patents
Method of manufacturing heat insulating structureInfo
- Publication number
- JP3108118B2 JP3108118B2 JP03079091A JP7909191A JP3108118B2 JP 3108118 B2 JP3108118 B2 JP 3108118B2 JP 03079091 A JP03079091 A JP 03079091A JP 7909191 A JP7909191 A JP 7909191A JP 3108118 B2 JP3108118 B2 JP 3108118B2
- Authority
- JP
- Japan
- Prior art keywords
- heat insulating
- insulating material
- space
- stock solution
- insulating structure
- 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.)
- Expired - Fee Related
Links
Landscapes
- Refrigerator Housings (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、発泡断熱材を内部に充
填して構成される断熱構造体の製造方法であって、特に
発泡断熱材原液に混入する発泡剤として低沸点のものを
用いた場合の断熱構造体の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a heat insulating structure comprising a foamed heat insulating material filled therein. The present invention relates to a method for manufacturing a heat-insulating structure in a case where the heat-insulating structure is provided.
【０００２】更に詳しくは成層圏のオゾン層の破壊や地
球温暖化の問題の解決に寄与することのできる断熱構造
体の製造方法に関する。[0002] More specifically, the present invention relates to a method for manufacturing a heat insulating structure that can contribute to solving the problems of stratospheric ozone depletion and global warming.
【０００３】[0003]
【従来の技術】従来のこの種断熱構造体の製造に当って
は、ポリオ−ル、イソシアネ−ト、水、トリクロロフル
オロメタン（ＣＣｌ3Ｆ、以下ＣＦＣ−１１と略す）発
泡剤などを原料とし、例えば特公平２−６４３４号公報
に示されるような方法で行われていた。2. Description of the Related Art In the production of this kind of conventional heat insulating structure, polyol, isocyanate, water, a foaming agent of trichlorofluoromethane (CCl 3 F, hereinafter abbreviated as CFC-11) or the like is used as a raw material. For example, such a method is disclosed in Japanese Patent Publication No. 2-6434.
【０００４】即ち、そこに示された断熱箱体は内箱と外
箱間に空間を構成し、この空間内に上記発泡ポリウレタ
ン断熱材原液を注入して発泡反応を開始させると共に、
適宜堰（邪魔板）を設けて発泡により膨張する断熱材の
進行を邪魔して拡散させ、それによって未充填部分の発
生を防止し、空間内に独立気泡の発泡断熱材を充填して
いる。That is, the heat insulating box shown therein forms a space between the inner box and the outer box, and the foaming polyurethane insulating material stock solution is injected into this space to start the foaming reaction.
Appropriate weirs (baffle plates) are provided to hinder the diffusion of the heat-insulating material that expands due to foaming, thereby preventing unfilled portions from being generated, and filling the space with closed-cell foamed heat-insulating material.
【０００５】ここで近年、前記発泡剤のＣＦＣ−１１が
成層圏のオゾン層を破壊することが発見され、特定フロ
ンとしてその生産、使用の規制が開始されるに至ってい
る。従って、係る特定フロンに代わる代替物の使用が重
要になってきている。[0005] In recent years, it has been discovered that CFC-11 as the blowing agent destroys the ozone layer in the stratosphere, and regulation on the production and use of specific CFCs has begun. Therefore, the use of a substitute for the specific CFC has become important.
【０００６】また一方では、ＣＦＣ−１１の沸点が＋２
３．８℃であるため、ＣＦＣ−１１を発泡剤として使用
した断熱体を、例えば−３０℃〜−４０℃の環境下で断
熱材として使用した場合、独立気泡中のＣＦＣ−１１は
液化してしまい、そのため断熱材の熱伝導率が大きくな
り断熱効果が損なわれる傾向にあるので、このような低
温下でも液化することなく低い熱伝導率を維持できるよ
うな発泡剤を用いた断熱体の製造が望まれている。On the other hand, the boiling point of CFC-11 is +2.
Since the temperature is 3.8 ° C., when a heat insulator using CFC-11 as a foaming agent is used as a heat insulator under an environment of −30 ° C. to −40 ° C., for example, CFC-11 in closed cells is liquefied. Because of this, the thermal conductivity of the heat insulating material tends to increase and the heat insulating effect tends to be impaired. Manufacturing is desired.
【０００７】[0007]
【発明が解決しようとする課題】これらの問題を解決す
る手段として、成層圏のオゾン層の破壊や地球温暖化の
問題が少ないクロロジフルオロメタン（ＣＨＣｌＦ2、
以下ＨＣＦＣ−２２と略す）や１，１，１，２−テトラ
フルオロエタン（ＣＨ2ＦＣＦ3、以下ＨＣＦＣ−１３４
ａと略す）を断熱材の発泡剤として用いることが考えら
れる。As means for solving these problems, chlorodifluoromethane (CHClF 2 ,
HCFC-22; and 1,1,1,2-tetrafluoroethane (CH 2 FCF 3 ; hereinafter, HCFC-134).
a) may be used as a foaming agent for the heat insulating material.
【０００８】これらの発泡剤自体は前記ＣＦＣ−１１よ
りも熱伝導率が大きいため、断熱特性は多少悪くなるも
のの、ＨＣＦＣ−２２の沸点は−４０．８℃、ＨＣＦＣ
−１３４ａの沸点は−２６．５℃と常温よりきわめて低
いため、前述のような−３０℃〜−４０℃の環境下にて
用いる場合には、かえって独立気泡中の発泡剤の凝縮が
少なく、低い熱伝導率が維持できる。Although these foaming agents themselves have a higher thermal conductivity than the above-mentioned CFC-11, their heat insulating properties are somewhat deteriorated, but the boiling point of HCFC-22 is -40.8 ° C.
Since the boiling point of -134a is -26.5 ° C, which is extremely lower than room temperature, when used in an environment of -30 ° C to -40 ° C as described above, the condensation of the foaming agent in the closed cells is rather small, Low thermal conductivity can be maintained.
【０００９】然し乍ら、沸点がこのように低いために、
発泡断熱材原液に混入して注入すると、フロス状で原液
が流出し、発泡が直ちに開始する。そのため、特に、内
部に発泡断熱材を充填する空間を構成した板状殻体の厚
みを構成する側壁に形成した注入孔から空間に発泡断熱
材原液を注入する場合は、フォームの流れ具合を均一化
しないと、充填不足、密度分布のバラ付きが生じる。However, due to such a low boiling point,
When mixed and injected into the foam insulation stock solution, the stock solution flows out in the form of floss, and foaming starts immediately. Therefore, especially when the foam insulating material stock solution is injected into the space from the injection hole formed in the side wall that forms the thickness of the plate-like shell that forms the space into which the foam insulating material is filled, the flow condition of the foam is uniform. Otherwise, insufficient filling and variation in density distribution will occur.
【００１０】この状態を図６に示す。即ち、図６では内
部に発泡断熱材を充填する空間２を構成した板状の殻体
１を形成し、この板状殻体１の厚みを構成する側壁の略
中央部に形成した注入孔３から空間２に注入ガン５を挿
入し、空間２内に発泡ポリウレタン断熱材原液４を注入
している。この原液はポリオ−ル及びイソシアネ−トを
主体とし、整泡剤、難燃剤及び発泡剤としてＨＣＦＣ−
２２が混入されている。FIG. 6 shows this state. That is, in FIG. 6, a plate-like shell 1 having a space 2 filled with a foamed heat insulating material therein is formed, and an injection hole 3 formed in a substantially central portion of a side wall forming the thickness of the plate-like shell 1 is formed. The injection gun 5 is inserted into the space 2 from above, and the undiluted foam polyurethane insulation material solution 4 is injected into the space 2. This stock solution is mainly composed of polyol and isocyanate, and is used as a foam stabilizer, a flame retardant and a foaming agent.
22 are mixed.
【００１１】注入ガン５から注入される原液の圧力は８
０kg/cm2以上あるため、注入ガン５から吐出された直後
の原液は注入孔３の形成された側壁１Ａに対向する反対
側の側壁１Ｂまで飛び、図６の４Ａのように注入孔３か
ら略扇状に広がるが、前述の如く発泡剤の沸点は低いた
め、注入ガン５から出た直後の原液４Ａはフロス状であ
る。The pressure of the stock solution injected from the injection gun 5 is 8
Since it is 0 kg / cm 2 or more, the undiluted solution immediately after being discharged from the injection gun 5 flies to the side wall 1B opposite to the side wall 1A where the injection hole 3 is formed, and from the injection hole 3 as shown in FIG. Although it expands substantially in a fan shape, the stock solution 4A immediately after it comes out of the injection gun 5 has a floss shape because the boiling point of the blowing agent is low as described above.
【００１２】その後発泡が開始され、フォ−ム４Ｂは図
６中実線矢印のように左右に進行するが、側壁１Ｂ側か
ら進行しているため、ゲル化直前のフォ−ム４Ｃの流れ
は図６中破線矢印の方向転換する。そのため、フォ−ム
４Ｃは空間２内のガスを巻き込んで、大きな気泡ができ
やすい。従って、気泡内のガスの対流が早くなり、断熱
特性として本来の特性が得られにくい問題があった。After that, foaming is started, and the foam 4B advances left and right as shown by the solid arrow in FIG. 6, but since it advances from the side wall 1B side, the flow of the foam 4C immediately before gelation is shown in FIG. 6. Change the direction of the dashed arrow in FIG. For this reason, the foam 4C easily entrains the gas in the space 2 to form large bubbles. Therefore, the convection of the gas in the bubble becomes faster, and there is a problem that it is difficult to obtain the original characteristics as the heat insulating characteristics.
【００１３】本発明は、係る課題を解決し、低沸点の発
泡剤を用いた場合に、フロス状態の原液を可能な限り殻
体の中央部に集中させ、フォ−ムの流れを均一化させる
断熱構造体の製造方法を提供することを目的とする。[0013] The present invention solves the above-mentioned problems, and in the case of using a low-boiling-point foaming agent, concentrates the undiluted solution in a floss state as much as possible in the central portion of the shell to make the flow of the foam uniform. An object of the present invention is to provide a method for manufacturing a heat insulating structure.
【００１４】[0014]
【課題を解決するための手段】本発明者等は従来のこれ
ら問題点を解決するべく鋭意研究を重ねた結果、以下に
示す断熱構造体の製造方法の発明を完成した。次に、図
１を用いて本発明を説明する。尚、図６と同一符号は同
一のものを示している。本発明は、発泡ポリウレタン断
熱材原液には沸点が２６．５℃以下の発泡剤を混入し、
内部に発泡ポリウレタン断熱材を充填する空間２を構成
した殻体１を形成し、この殻体１の厚みを構成する側壁
１Ａの略中央部に注入孔３を形成している。注入孔３の
両則方に位置する殻体１の両端部には排気孔６を四ヶ所
形成する。空間２内の注入孔３から反対側の側壁１Ｂに
至る中間部には空間２の略中央部に位置して注入孔３に
対向して邪魔板７を設ける。この邪魔板７には障壁部８
と通過部９を構成する。Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the conventional problems, and as a result, have completed the invention of the following method for manufacturing a heat insulating structure. Next, the present invention will be described with reference to FIG. The same reference numerals as those in FIG. 6 indicate the same components. In the present invention, a foaming agent having a boiling point of 26.5 ° C. or less is mixed into the foamed polyurethane insulation stock solution,
A shell 1 having a space 2 filled with a foamed polyurethane heat insulating material is formed therein, and an injection hole 3 is formed at a substantially central portion of a side wall 1A constituting the thickness of the shell 1. Four exhaust holes 6 are formed at both ends of the shell 1 located on both sides of the injection hole 3. A baffle plate 7 is provided at an intermediate portion from the injection hole 3 in the space 2 to the side wall 1B on the opposite side, located substantially at the center of the space 2 and opposed to the injection hole 3. The baffle 7 has a barrier 8
And the passage section 9.
【００１５】断熱材の原液４はポリオ−ル及びイソシア
ネ−トを主体とし、整泡剤、難燃剤及び発泡剤としてＨ
ＣＦＣ−２２若しくはＨＣＦＣ−１３４ａが混入されて
いる。The stock solution 4 of the heat insulating material is mainly composed of a polyol and an isocyanate, and is used as a foam stabilizer, a flame retardant and a foaming agent.
CFC-22 or HCFC-134a is mixed.
【００１６】この断熱材の充填に当っては、空間２に注
入ガン５を挿入し、空間２内に発泡断熱材原液４を圧力
８０kg/cm2以上で注入する。注入された原液の一部は障
壁部８に衝突させ、一部を通過部９から邪魔板７の反対
側へ通過させる。To fill the heat insulating material, an injection gun 5 is inserted into the space 2, and the foam insulating material stock solution 4 is injected into the space 2 at a pressure of 80 kg / cm 2 or more. A part of the injected stock solution collides with the barrier portion 8 and a part of the stock solution passes from the passage portion 9 to the opposite side of the baffle plate 7.
【００１７】[0017]
【作用】図１において、本発明の断熱構造体の製造方法
による作用を説明する。The operation of the method for manufacturing a heat insulating structure according to the present invention will be described with reference to FIG.
【００１８】注入ガン５から吐出された直後の原液は、
それに対向する邪魔板７まで飛び、一部は障壁部８、８
に勢いを持って衝突して跳ね返り、一部は障壁部８、８
間の通過部９を通過して邪魔板７の反対側へ飛び出す。
前述の如く発泡剤の沸点は低いため、注入ガン５から出
た直後の原液４Ａはフロス状である。このフロス状の原
液４Ａは図１のように注入孔３から見て邪魔板７の前
後、即ち、板状殻体１の中央部に集中する。The stock solution immediately after being discharged from the injection gun 5 is:
It jumps to the baffle plate 7 opposite to it, and partly
It collides with momentum and bounces off, and part of the barriers 8, 8
It jumps out of the baffle plate 7 through the intervening passage 9.
As described above, since the boiling point of the blowing agent is low, the stock solution 4A immediately after leaving the injection gun 5 is in a floss state. The floss-like stock solution 4A concentrates before and after the baffle plate 7, that is, at the center of the plate-like shell 1 as viewed from the injection hole 3 as shown in FIG.
【００１９】その後発泡が開始され、フォ−ム４Ｂは図
１中破線円で示すように邪魔板７を中心として略均等に
広がり、更に、殻体１の四隅に向かって破線矢印のよう
に進む。これによって、ゲル化直前のフォ−ム４Ｃの流
れ方向も変化しないので前述のようなガスの巻き込みも
生じず、それによって断熱材には均一なセル形態が得ら
れ、断熱性能が向上する。Thereafter, foaming is started, and the foam 4B spreads substantially evenly around the baffle plate 7 as shown by the dashed circle in FIG. 1 and further proceeds toward the four corners of the shell 1 as indicated by the dashed arrows. . As a result, the flow direction of the foam 4C immediately before the gelation does not change, so that the above-mentioned entrainment of gas does not occur, whereby a uniform cell form is obtained in the heat insulating material, and the heat insulating performance is improved.
【００２０】これによって断熱板体Ｉが完成する。この
断熱板体Ｉの発泡剤は低沸点であるので、低温環境下で
の断熱特性が良くなる。Thus, the heat insulating plate I is completed. Since the foaming agent of the heat insulating plate I has a low boiling point, the heat insulating properties in a low temperature environment are improved.
【００２１】特に、発泡剤として、ＨＣＦＣ−２２若し
くはＨＣＦＣ−１３４ａを用いれば、成層圏のオゾン層
破壊の危険性も少ない。In particular, if HCFC-22 or HCFC-134a is used as a foaming agent, the risk of destruction of the ozone layer in the stratosphere is small.
【００２２】[0022]
【実施例】次に、図１〜図５の板状の断熱構造体の実施
例に基づき本発明を詳述する。Next, the present invention will be described in detail with reference to an embodiment of a plate-like heat insulating structure shown in FIGS.
【００２３】図２は実施例の板状の殻体１の斜視図を示
し、図３は図２の縦断面図を示す。実施例で板状殻体１
は、金属或るいは合成樹脂からなる上下平板１１及び１
２と、樹脂の押し出し成形等にてなる額縁状の枠材１３
とで構成し、図２の如く枠材１３上下縁部の溝１４に上
下平板１１及び１２をそれぞれ間隔を存してはめ込み、
これによって内部に発泡断熱材４の充填空間２を構成し
ている。FIG. 2 is a perspective view of the plate-like shell 1 of the embodiment, and FIG. 3 is a longitudinal sectional view of FIG. In the embodiment, the plate-like shell 1
Are upper and lower flat plates 11 and 1 made of metal or synthetic resin.
2, frame-shaped frame material 13 formed by extrusion molding of resin
The upper and lower flat plates 11 and 12 are fitted into the grooves 14 at the upper and lower edges of the frame member 13 at intervals as shown in FIG.
Thereby, the filling space 2 of the foamed heat insulating material 4 is formed inside.
【００２４】注入孔３は、板状殻体１の厚みを構成する
側壁１Ａとなる枠材１３の略中央部に穿設されている。
排気孔６は注入孔３の両側方に位置するように側壁１Ａ
と直交する枠材１３の壁面１３Ａ、１３Ｂの隅角部に穿
設されている。The injection hole 3 is formed in a substantially central portion of a frame member 13 serving as a side wall 1A constituting the thickness of the plate-like shell 1.
The exhaust holes 6 are formed on the side walls 1A so as to be located on both sides of the injection holes 3.
Are formed in the corners of the wall surfaces 13A and 13B of the frame member 13 perpendicular to the above.
【００２５】邪魔板７は発泡スチロールや、ポリオ−ル
とイソシアネ−トからなる発泡ポリウレタン断熱材等の
断熱材によりブロック状に成形されており、図５の斜視
図に示すように長手方向の中央部を切り欠いて通過部９
が構成され、この通過部９の両側の壁面を障壁部８、８
としている。この邪魔板７は、障壁部８を注入孔３に対
向させ、空間２内の板状殻体１の略中央部に例えば接着
剤によって底面を平板１２に固定されている。The baffle plate 7 is formed in a block shape from a heat insulating material such as styrene foam or a foamed polyurethane heat insulating material made of polyol and isocyanate. As shown in the perspective view of FIG. Cut through the passage 9
The wall surfaces on both sides of the passage portion 9 are divided into barrier portions 8 and 8.
And The baffle plate 7 has the barrier portion 8 opposed to the injection hole 3, and the bottom surface is fixed to the flat plate 12 by, for example, an adhesive at a substantially central portion of the plate-like shell 1 in the space 2.
【００２６】断熱材４の充填時には、このような板状殻
体１を複数用意し、図４に示すように仕切りの鉄板１６
を介して積み重ね、注入孔３及び排気孔６を除いて周囲
の側壁を側方の治具１７で押さえ、且つ、上下を上下治
具１８及び１９で押さえる。When filling the heat insulating material 4, a plurality of such plate-like shells 1 are prepared, and as shown in FIG.
, And the surrounding side wall is removed by the side jig 17 except for the injection hole 3 and the exhaust hole 6, and the upper and lower jigs 18 and 19 are pressed up and down.
【００２７】この状態で、注入ガン５により上から順に
次々と各板状殻体１の空間２内に発泡ポリウレタン断熱
材原液４を注入していく。原液４はポリオ−ル及びイソ
シアネ−トを主体とし、整泡剤、難燃剤及び発泡剤とし
て実施例ではＨＣＦＣ−２２が混入されている。各板状
殻体１内における断熱材４の発泡充填工程は、前記図１
の説明のとおりである。In this state, the undiluted foamed polyurethane heat insulating material 4 is injected into the space 2 of each plate-like shell 1 one after another by the injection gun 5 in order from the top. The stock solution 4 is mainly composed of a polyol and an isocyanate, and HCFC-22 is mixed in the embodiment as a foam stabilizer, a flame retardant and a foaming agent. The foam filling step of the heat insulating material 4 in each plate-like shell 1 is performed by the process shown in FIG.
It is as described.
【００２８】即ち、注入ガン５から吐出された直後の原
液４は、それに対向する邪魔板７まで飛んで、一部は障
壁部８、８に勢いを持って衝突して跳ね返り、一部は障
壁部８、８間の通過部９を通過して邪魔板７の反対側へ
飛び出す。発泡剤ＨＣＦＣ−２２の沸点は低いため、注
入ガン５から出た直後の原液４Ａはフロス状である。こ
のフロス状の原液４Ａは図１のように注入孔３から見て
邪魔板７の前後、即ち、板状殻体１内の空間２中央部に
集中する。That is, the undiluted solution 4 immediately after being discharged from the injection gun 5 flies to the baffle plate 7 facing the same, a part of the undiluted liquid collides with the momentum against the barrier portions 8, 8 and rebounds, and a part thereof rebounds. It passes through the passage part 9 between the parts 8 and 8 and jumps out to the opposite side of the baffle plate 7. Since the boiling point of the blowing agent HCFC-22 is low, the stock solution 4A immediately after leaving the injection gun 5 is in the form of floss. This floss-like stock solution 4A concentrates in front and behind the baffle plate 7, that is, in the center of the space 2 in the plate-like shell 1 as viewed from the injection hole 3 as shown in FIG.
【００２９】その後発泡が開始され、フォ−ム４Ｂは図
１中破線円で示すように邪魔板７を中心として略均等に
広がり、更に、この円が拡大する形で空間２内を破線矢
印のように進む。フォ−ム４Ｂの進行に押されて空間２
内のガスは四隅の排気孔６から板状殻体１外に排出され
る。また、ゲル化直前のフォ−ム４Ｃの流れ方向も変化
しないのでガスの巻き込みも生じない。空間２内へ断熱
材４が充満し、適当なキュアタイムを置いて断熱板体Ｉ
が完成する。Thereafter, foaming is started, and the foam 4B spreads substantially evenly around the baffle plate 7 as shown by the dashed circle in FIG. 1, and furthermore, the circle expands in the space 2 as indicated by the dashed arrow. Proceed as follows. Space 2 pushed by the progress of form 4B
The gas inside is exhausted out of the plate-like shell 1 through the exhaust holes 6 at the four corners. Further, since the flow direction of the foam 4C immediately before gelation does not change, no entrainment of gas occurs. The space 2 is filled with the heat insulating material 4, and after an appropriate cure time, the heat insulating plate I
Is completed.
【００３０】発泡剤としては、ＨＣＦＣ−２２に限らず
ＨＣＦＣ−１３４ａを用いても良い。ＨＣＦＣ−１３４
ａはＨＣＦＣ−２２より沸点が低いが、本発明によれば
断熱材としては略均一なセル状態が得られる。The foaming agent is not limited to HCFC-22, but may be HCFC-134a. HCFC-134
Although a has a lower boiling point than HCFC-22, according to the present invention, a substantially uniform cell state can be obtained as a heat insulating material.
【００３１】尚、実施例では板状の断熱構造体について
説明したが、それに限らず、箱状のものであっても本発
明の要旨を逸脱しない範囲で変更可能である。In the embodiment, the plate-shaped heat insulating structure has been described. However, the present invention is not limited thereto, and a box-shaped heat insulating structure can be changed without departing from the gist of the present invention.
【００３２】[0032]
【発明の効果】本発明によれば、沸点が２６．５℃以下
の発泡剤を用いても、注入後のフロス状断熱材原液は殻
体の中央部に集中するので、フォームは邪魔板を中心と
して空間内に略均一に広がる。それによってゲル化直前
のフォームの流れ方向が変化しないのでガスの巻き込み
も生じず、それによって断熱材には均一なセル形成が得
られ断熱性能が向上する。According to the present invention, the boiling point is 26.5 ° C. or less.
Even when the foaming agent is used, the floss-like heat insulating material stock solution after injection is concentrated at the center of the shell, so that the foam spreads substantially uniformly around the baffle plate in the space. As a result, the flow direction of the foam immediately before gelation does not change, so that no gas is entrained, whereby uniform cell formation is obtained in the heat insulating material, and the heat insulating performance is improved.
【００３３】特に、発泡剤の沸点は２６．５℃以下であ
るので、低温環境下での断熱特性が良くなる。In particular, since the boiling point of the foaming agent is 26.5 ° C. or less , the heat insulating property in a low temperature environment is improved.
【００３４】更に、発泡剤として、ＨＣＦＣ−２２若し
くはＨＣＦＣ−１３４ａを用いれば、成層圏のオゾン層
破壊の危険性も少ないので、成層圏オゾン層の破壊や地
球温暖化の問題の少ない断熱構造体が得られる。Furthermore, if HCFC-22 or HCFC-134a is used as a foaming agent, the risk of destruction of the ozone layer in the stratosphere is small, so that an insulating structure with less problems of destruction of the stratospheric ozone layer and global warming can be obtained. Can be
【図１】本発明の断熱構造体の製造方法の断熱材発泡工
程を説明する図。FIG. 1 is a diagram illustrating a heat insulating material foaming step of the method for manufacturing a heat insulating structure of the present invention.
【図２】板状殻体の斜視図。FIG. 2 is a perspective view of a plate-like shell.
【図３】板状殻体の縦断面図。FIG. 3 is a longitudinal sectional view of a plate-like shell.
【図４】複数の板状殻体を治具にセットした状態を示す
図。FIG. 4 is a view showing a state in which a plurality of plate-like shells are set in a jig.
【図５】邪魔板の斜視図。FIG. 5 is a perspective view of a baffle plate.
【図６】従来の断熱構造体の製造方法の断熱材発泡工程
を説明する図。FIG. 6 is a view for explaining a heat insulating material foaming step of a conventional method for manufacturing a heat insulating structure.
１ 殻体 ２ 空間 ３ 注入孔 ４ 発泡断熱材 ５ 注入ガン ６ 排気孔 ７ 邪魔板 ８ 障壁部 ９ 通過部 Ｉ 断熱板体 DESCRIPTION OF SYMBOLS 1 Shell 2 Space 3 Injection hole 4 Foam insulation material 5 Injection gun 6 Exhaust hole 7 Baffle plate 8 Barrier part 9 Passing part I Heat insulation plate
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ２９Ｌ 9:00 (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 39/00 - 39/44 F25D 23/08 ──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. 7 identification code FI B29L 9:00 (58) Field surveyed (Int.Cl. 7 , DB name) B29C 39/00-39/44 F25D 23/08
Claims (2)
成した殻体を形成し、発泡工程時、前記殻体に形成した
注入孔から前記空間に発泡断熱材原液を注入して発砲さ
せると共に、最終充填位置の排気孔から前記空間の空気
を外部に排出する断熱構造体の製造方法において、前記
発泡断熱材原液には沸点が２６．５℃以下の発泡剤を混
入し、前記空間の略中央部には注入孔に対向して邪魔板
を設け、該邪魔板には障壁部と通過部を構成し、前記注
入孔から注入した発泡断熱材原液の一部を前記障壁部に
衝突させ、一部を前記通過部から前記邪魔板の反対側へ
通過させることを特徴とする断熱構造体の製造方法。1. A foam body having a space for filling a foamed heat insulating material therein is formed. In a foaming step, a foamed heat insulating material stock solution is injected into the space from an injection hole formed in the shell body and fired. A method for manufacturing a heat insulating structure for discharging air in the space to the outside from an exhaust hole at a final filling position, wherein a foaming agent having a boiling point of 26.5 ° C. or less is mixed into the foamed heat insulating material stock solution, A baffle plate is provided in the center portion so as to face the injection hole, a barrier portion and a passage portion are formed on the baffle plate, and a part of the foamed insulating material stock solution injected from the injection hole collides with the barrier portion , A method for manufacturing a heat-insulating structure, characterized in that a part of the heat-insulating structure is passed from the passing portion to the opposite side of the baffle plate.
ＣＦＣ−１３４ａを用いることを特徴とする請求項１の
断熱構造体の製造方法。2. HCFC-22 or H as a foaming agent
The method for manufacturing a heat insulating structure according to claim 1, wherein CFC-134a is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03079091A JP3108118B2 (en) | 1991-04-11 | 1991-04-11 | Method of manufacturing heat insulating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03079091A JP3108118B2 (en) | 1991-04-11 | 1991-04-11 | Method of manufacturing heat insulating structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04312810A JPH04312810A (en) | 1992-11-04 |
| JP3108118B2 true JP3108118B2 (en) | 2000-11-13 |
Family
ID=13680217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03079091A Expired - Fee Related JP3108118B2 (en) | 1991-04-11 | 1991-04-11 | Method of manufacturing heat insulating structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3108118B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014055720A (en) * | 2012-09-13 | 2014-03-27 | Sharp Corp | Refrigerator and manufacturing process of refrigerator |
-
1991
- 1991-04-11 JP JP03079091A patent/JP3108118B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04312810A (en) | 1992-11-04 |
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