JPH0395383A - Heat-insulated box structure - Google Patents
Heat-insulated box structureInfo
- Publication number
- JPH0395383A JPH0395383A JP23190889A JP23190889A JPH0395383A JP H0395383 A JPH0395383 A JP H0395383A JP 23190889 A JP23190889 A JP 23190889A JP 23190889 A JP23190889 A JP 23190889A JP H0395383 A JPH0395383 A JP H0395383A
- Authority
- JP
- Japan
- Prior art keywords
- box
- heat insulating
- outer box
- insulating material
- foam heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000006260 foam Substances 0.000 claims abstract description 26
- 239000011810 insulating material Substances 0.000 claims abstract description 24
- 238000005192 partition Methods 0.000 claims abstract description 8
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 13
- 238000005187 foaming Methods 0.000 abstract description 4
- 238000007710 freezing Methods 0.000 abstract description 4
- 230000008014 freezing Effects 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 230000008602 contraction Effects 0.000 abstract description 3
- 239000011550 stock solution Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 229920003002 synthetic resin Polymers 0.000 abstract description 2
- 239000000057 synthetic resin Substances 0.000 abstract description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 9
- 239000012774 insulation material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000002542 deteriorative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Landscapes
- Refrigerator Housings (AREA)
Abstract
Description
【発明の詳細な説明】
く産業上の利用分野〉
本発明は例えば冷凍室と冷蔵室というように少なくとも
２室以上に区分されてなる内箱を外箱に収容し、内箱間
及び内箱と外箱との間の空間に発泡性断熱材を充填して
なる断熱箱体に関するものである。[Detailed Description of the Invention] Industrial Application Fields> The present invention accommodates an inner box divided into at least two compartments, such as a freezer compartment and a refrigerator compartment, in an outer box, and The present invention relates to an insulating box body in which the space between the box and the outer box is filled with a foamable heat insulating material.
く従来の技術〉
以下従来の技術について第３図及び第４図を用いて説明
する。Prior Art> The conventional technology will be described below with reference to FIGS. 3 and 4.
第３図は従来の断熱箱体を示す外観図、第４図は第３図
の正面断面図である。FIG. 3 is an external view showing a conventional heat insulating box, and FIG. 4 is a front sectional view of FIG. 3.
従来の冷蔵庫ではこれらの図に示すように、冷凍室１と
冷蔵室２とを合或樹脂材料によυ一体に或型して内箱３
を形成していた。該内箱３ｔ−金属製の外箱４に収容し
た後、硬質ポリウレタン等の発泡断熱材１０５の原液を
上記円箱３と上記外箱４との空間及び上記冷凍室１と上
記令蔵室２との間の仕切部空間６に注入して、この原液
の発泡によって上記空間部を充填させるとで断熱箱体１
０８を形成していた。この時、上記発泡断熱材１０５と
外箱４とは該発泡断熱材１０５の接着性により強く接着
されていた。In conventional refrigerators, as shown in these figures, the freezing compartment 1 and the refrigerating compartment 2 are combined or molded into one body made of resin material, and an inner box 3 is formed.
was forming. After storing the inner box 3t and the metal outer box 4, the undiluted solution of the foamed heat insulating material 105 such as hard polyurethane is poured into the space between the circular box 3 and the outer box 4, the freezing compartment 1, and the storage compartment 2. The insulated box 1 is injected into the partition space 6 between the undiluted solution and the foamed solution fills the space.
It was forming 08. At this time, the foamed heat insulating material 105 and the outer box 4 were strongly bonded to each other due to the adhesive properties of the foamed heat insulating material 105.
く解決しようとする課題〉
しかし、上記従来の断熱箱体にかいては、構造上上記冷
凍室１と上記冷蔵室２との間の仕切部６の発泡断熱材１
０５の肉厚が極端に厚くなっていた。このため、該仕切
部６両側而の上記発泡断熱材５の発泡硬化温度から室温
に至る温度低下による寸法収縮、及び冷却運転時にかけ
る温度低下による断熱材１０５の寸法収縮が、他の部分
に比べて大きくなっていた。しかし、上記発泡断熱材１
０５ぱ外箱４と強く接着しているため、上記発泡断熱材
の収縮に追従して外箱４の両側面に凹みが生じていた。Problems to be Solved> However, in the conventional heat insulating box, the foamed heat insulating material 1 of the partition 6 between the freezer compartment 1 and the refrigerator compartment 2 is structurally limited.
The wall thickness of 05 was extremely thick. Therefore, the dimensional shrinkage of the foamed heat insulating material 5 on both sides of the partition section 6 due to the temperature drop from the foaming hardening temperature to room temperature, and the dimensional shrinkage of the heat insulating material 105 due to the temperature drop during cooling operation, compared to other parts. It was getting bigger. However, the foam insulation material 1
Since the outer box 4 was strongly adhered to the outer box 4, dents were formed on both sides of the outer box 4 following the shrinkage of the foamed heat insulating material.
該凹みは光の反射具合によっては大変目立ち、製品の外
観を著しく低下させるという欠点があった。The dents are very noticeable depending on the degree of light reflection, and have the disadvantage of significantly deteriorating the appearance of the product.
く課題を解決するための手段〉
本発明は上記欠点に鑑みてなされたものであＤ、仕切部
を介して２室以上に区分された内箱を外箱に収容し、上
記内箱間及び内箱と外箱との間の空間に接着性を有する
発泡断熱材を充填してなる断熱箱体において、上記発泡
断熱材の不均一収縮部一にして上記外箱との当接部に脆
弱層を形成してなる断熱箱体を提供するものである。Means for Solving the Problems> The present invention has been made in view of the above-mentioned drawbacks. In a heat insulating box body formed by filling the space between an inner box and an outer box with a foam heat insulating material having adhesive properties, the non-uniform shrinkage of the foam heat insulating material is weak at the contact area with the outer box. The present invention provides a heat insulating box formed by forming layers.
く作 用〉
以上のような断熱箱体によれば、該断熱箱体の発泡断，
熱材が不均一に収縮した場合、上記脆弱層が壊れて上記
断熱材と外箱とが容易に剥離するので、外箱表面に凹み
が生じることがない。Function> According to the above-described insulating box, foam breakage of the insulating box,
If the heating material contracts unevenly, the brittle layer is broken and the heat insulating material and the outer case are easily separated, so that no dents are formed on the surface of the outer case.
く実施例〉
以下本発明の一実施例について、第１図及び第２図を用
いて説明する。Embodiment> An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
第１図は本発明の断熱箱体の形成方法の一実施例を示す
説明図、第２図は第１図の発泡断熱材充填時の状態を示
す正面断面図である。これらの図にかいて従来と同一部
分については同一符号を符し、詳細な説明は省略する。FIG. 1 is an explanatory diagram showing one embodiment of the method for forming a heat insulating box according to the present invention, and FIG. 2 is a front sectional view showing the state when the foamed heat insulating material of FIG. 1 is filled. In these figures, parts that are the same as those in the prior art are designated by the same reference numerals, and detailed explanations will be omitted.
８は断熱箱体で、例えば冷凍室１と冷蔵室２との２室を
合成樹脂材料にて一体に成型した内箱３と、金属製の外
箱４と、上記内箱３と上記外箱４との間の空間、及び上
記冷凍室１と上記冷蔵室２との間の仕切部空間６に充填
された発泡ボリウ１／タン等の接着力を有する発泡断熱
材５とにより構或される。Reference numeral 8 denotes a heat insulating box body, which includes, for example, an inner box 3 in which two compartments, a freezer compartment 1 and a refrigerator compartment 2, are integrally molded from a synthetic resin material, an outer box 4 made of metal, the inner box 3, and the outer box. 4, and a foam insulation material 5 having adhesive strength such as foamed foam 1/tan filled in the partition space 6 between the freezing compartment 1 and the refrigerating compartment 2. .
上記断熱箱体８の形成方法について説明する。A method of forming the heat insulating box 8 will be explained.
１１は発泡断熱材を発泡充填させるための発泡治具で、
上記内箱３に挿着される円治具１２と、上記外箱４の正
面を除く５面を囲んで固定する外治具１３とからなる。11 is a foaming jig for foam filling the foam insulation material;
It consists of a circular jig 12 that is inserted into the inner box 3 and an outer jig 13 that surrounds and fixes five sides of the outer box 4 excluding the front.
該外治具１３ぱ、上記外箱４の天面と当接する天面治具
１４と、上記外箱４の底面と当接する底面治具１５と、
上記外箱４の両側面と当接する側板治具１６−１６、及
び上記外箱４の正面と当接する正面治具１７とにより構
或される。The outer jig 13 includes a top jig 14 that contacts the top surface of the outer box 4, and a bottom jig 15 that contacts the bottom surface of the outer box 4.
It is composed of side plate jigs 16-16 that come into contact with both side surfaces of the outer box 4, and a front jig 17 that comes into contact with the front side of the outer box 4.
１８・１８は上記側板治具１６・１６に形成された冷却
部で、例えば冷却パイプ（図示せず）を蛇行させて埋設
したものである。該パイプに冷水を流すことで上記冷却
部１８・１８が冷却される。Reference numerals 18 and 18 denote cooling portions formed in the side plate jigs 16 and 16, which are, for example, a cooling pipe (not shown) embedded in a meandering manner. The cooling parts 18 are cooled by flowing cold water through the pipes.
断熱箱体を形成するには、まず上記内箱３を外箱４に収
容した箱体２０を内治具１２に挿着し、その後上記外箱
４の背面を除く５面を、上述した天面治具１４、底面治
具１５、左右の側板治具１６・１６及び正面治具ｌ７に
よク当接する如く囲んで固定する。そして、上記箱体２
０の背面適所に設けられた発泡断熱材注入口１９・１９
から所定量の発泡断熱材例えば発泡ウレタンの原液を注
入する。該注入は注入機等によシ行なわれる。To form a heat insulating box, first insert the box 20 in which the inner box 3 is housed in the outer box 4 into the inner jig 12, and then attach the outer box 4 to the above-mentioned ceiling on five sides excluding the back surface. It is surrounded and fixed so as to be in contact with the surface jig 14, the bottom jig 15, the left and right side plate jigs 16, and the front jig l7. And the box body 2
Foam insulation material injection ports 19 and 19 installed at appropriate locations on the back of 0
A predetermined amount of a foamed heat insulating material, such as a stock solution of foamed urethane, is injected from the tank. The injection is performed using an injection machine or the like.
注入された原液は直ちに発泡し、反応熱によって内部温
度を上昇させながら上記箱体２０内空間部に発泡した断
熱材５を充満させる。The injected stock solution immediately foams, and the internal space of the box 20 is filled with the foamed heat insulating material 5 while increasing the internal temperature due to the heat of reaction.
そして所定時間経過すると次第に反応が静筐る。After a predetermined period of time has elapsed, the reaction gradually subsides.
上記内部温度が最高点に達した後に、上記冷却パイプに
冷水を循環させて、上記外治具１３の左右の冷却部１８
・１８を冷却する。上記冷却部１８・１８ぱ即ち、上記
冷凍室１と上記冷蔵室２間仕切部６の延長上とその周辺
部に相当する。After the internal temperature reaches the highest point, cold water is circulated through the cooling pipe to cool the left and right cooling parts 18 of the outer jig 13.
・Cool 18. The cooling parts 18 and 18 correspond to an extension of the partition part 6 between the freezer compartment 1 and the refrigerator compartment 2 and the surrounding area thereof.
従って、上記外箱４の上記冷却部１８・１８当接部７・
７だけが急冷され、その結果該当接部７・７に面した部
分の発泡ウレタンの正常な発泡或長が阻害されて、もろ
くて接着性の劣った脆弱層１０・１０が形成される。上
記冷却部１８・１８以外の発泡ウレタンの或長は余熱で
正常に進む。Therefore, the cooling portions 18 and 18 of the outer box 4 and the abutting portions 7 and
7 is rapidly cooled, and as a result, the normal foaming and length of the urethane foam in the portion facing the corresponding contact portions 7, 7 is inhibited, and brittle layers 10, 10, which are brittle and have poor adhesiveness, are formed. Certain lengths of the urethane foam other than the cooling parts 18 and 18 proceed normally due to residual heat.
発泡断熱材の充填が完↑兎ら、上記外治具１３と上記内
治具１２とを取り外して、箱体全体を冷却すると断熱箱
体８が完或する。When filling of the foamed heat insulating material is completed, the outer jig 13 and the inner jig 12 are removed and the entire box is cooled, and the heat insulating box 8 is completed.
上記断熱箱体８によれば、発泡ウレタン５に部分的な収
縮力が作用しても、上記脆弱ＷＩＯ・１ｏが部分的に壊
れて、上記外箱４内面から容易に剥離する。このため、
発泡ウレタン５のみが収縮することになク収縮力が外箱
４に及ぶことがなくなる。従って上記外箱４表面に凹み
が生じることを防止することができる。According to the heat insulating box 8, even if a partial contraction force acts on the urethane foam 5, the fragile WIO-1o is partially broken and easily peeled off from the inner surface of the outer box 4. For this reason,
Since only the urethane foam 5 contracts, the contraction force is not applied to the outer box 4. Therefore, it is possible to prevent dents from forming on the surface of the outer box 4.
尚、上記発泡ウレタンの急冷の時期については、上述し
た如く発泡ウレタン５の内部温度が最高点に達した後が
望ましい。これは、発泡ウレタンに流動性が残っている
時点で冷却すると、冷却によって出来かけていた脆弱Ｍ
１０・１０が発泡ウレタンの流動によって壊されてしま
う恐れがあるためである。As for the timing of the rapid cooling of the urethane foam, it is desirable to do so after the internal temperature of the urethane foam 5 has reached its maximum point, as described above. This is because if the urethane foam is cooled while it still has fluidity, the brittle M
This is because there is a risk that 10.10 may be destroyed by the flow of urethane foam.
〈効 果〉
本発明によれば、発泡断熱材の不均一収縮部にして外箱
との当接部に脆弱層を形成したから、発泡断熱材が不均
一に収縮した場合に、脆弱層が壊れて発泡断熱材と外箱
とが容易に剥離するから、発泡断熱材の収縮力が外箱に
及んで外箱表面に凹みが生じることを防止できる。従っ
て、製品の外観を著しく低下させることなく商品価値を
上げることができるという優れた効果を奏する。<Effects> According to the present invention, since the fragile layer is formed in the non-uniformly contracted portion of the foam insulation material and the contact portion with the outer box, when the foam insulation material contracts non-uniformly, the fragile layer is Since the foamed heat insulating material and the outer box are easily separated by breaking, it is possible to prevent the shrinkage force of the foamed heat insulating material from being applied to the outer box and causing dents on the surface of the outer box. Therefore, an excellent effect can be achieved in that the commercial value can be increased without significantly deteriorating the appearance of the product.
第１図は本発明の断熱箱体の形成方法の一実施例を示す
説明図、第２図は第１図の発泡断熱材充填時の状態を示
す正面断面図、第３図は従来の断熱箱体を示す外観図、
第４図は第３図の正面断面図である。
３：内箱、 ４：外箱、 ５：発泡断熱材、８：断熱箱
体、 １０：脆弱層。Fig. 1 is an explanatory view showing one embodiment of the method for forming a heat insulating box according to the present invention, Fig. 2 is a front cross-sectional view showing the state when the foamed heat insulating material is filled in Fig. 1, and Fig. 3 is a conventional heat insulating box body. External view showing the box body,
FIG. 4 is a front sectional view of FIG. 3. 3: Inner box, 4: Outer box, 5: Foam insulation material, 8: Insulating box body, 10: Fragile layer.
Claims (1)
収容し、上記内箱間及び内箱と外箱との間の空間に接着
性を有する発泡断熱材を充填してなる断熱箱体において
、 上記発泡断熱材の不均一収縮部にして上記外箱との当接
部に脆弱層を形成したことを特徴とする断熱箱体。[Scope of Claims] 1. An inner box divided into two or more chambers through a partition is housed in an outer box, and foam having adhesive properties is provided in the space between the inner boxes and between the inner box and the outer box. A heat insulating box filled with a heat insulating material, characterized in that a fragile layer is formed in a non-uniformly contracted portion of the foamed heat insulating material at a contact portion with the outer box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23190889A JPH0395383A (en) | 1989-09-07 | 1989-09-07 | Heat-insulated box structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23190889A JPH0395383A (en) | 1989-09-07 | 1989-09-07 | Heat-insulated box structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0395383A true JPH0395383A (en) | 1991-04-19 |
Family
ID=16930940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23190889A Pending JPH0395383A (en) | 1989-09-07 | 1989-09-07 | Heat-insulated box structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0395383A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014021018A1 (en) * | 2012-07-30 | 2014-02-06 | シャープ株式会社 | Manufacturing method for insulating boxes, insulating boxes, and refrigerators |
| US9132592B2 (en) | 2012-11-19 | 2015-09-15 | General Electric Company | Appliance with expanding foam material |
| JP2015169371A (en) * | 2014-03-06 | 2015-09-28 | シャープ株式会社 | refrigerator |
-
1989
- 1989-09-07 JP JP23190889A patent/JPH0395383A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014021018A1 (en) * | 2012-07-30 | 2014-02-06 | シャープ株式会社 | Manufacturing method for insulating boxes, insulating boxes, and refrigerators |
| US9132592B2 (en) | 2012-11-19 | 2015-09-15 | General Electric Company | Appliance with expanding foam material |
| JP2015169371A (en) * | 2014-03-06 | 2015-09-28 | シャープ株式会社 | refrigerator |
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