JPH07167551A - Thermal insulating box - Google Patents
Thermal insulating boxInfo
- Publication number
- JPH07167551A JPH07167551A JP31470393A JP31470393A JPH07167551A JP H07167551 A JPH07167551 A JP H07167551A JP 31470393 A JP31470393 A JP 31470393A JP 31470393 A JP31470393 A JP 31470393A JP H07167551 A JPH07167551 A JP H07167551A
- Authority
- JP
- Japan
- Prior art keywords
- heat insulating
- insulating material
- thermal insulating
- box
- urethane foam
- 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
Landscapes
- Refrigerator Housings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、内箱と外箱と発泡断熱
材及び真空断熱材を備えた冷蔵庫等に利用される断熱箱
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 heat insulating box used for a refrigerator or the like having an inner box, an outer box, a foamed heat insulating material and a vacuum heat insulating material.
【０００２】[0002]
【従来の技術】従来の技術を図５、図６によって説明す
ると、１は冷蔵庫本体、この冷蔵庫本体１は、外箱２、
内箱３、断熱材４、中仕切壁５、冷凍室扉６、冷蔵室扉
７、圧縮機８より構成されている。９は冷却器、１０
は、この冷却器９で冷却された冷気を冷凍室１１と冷蔵
室１２に強制的に送風する送風機、１３は先の送風機１
０を駆動する駆動モータである。この駆動モータ取付け
にあたっては、図５に示す如くモータケース１４を用い
て外箱２と内箱３が作る断熱壁間に取付けてある。１５
ａは発泡断熱材の原液注入口１５をカバーする蓋であ
る。１６はガス抜き孔で、注入口１５の近くの内箱に設
けられている。１７はそのガス抜き孔１６から発泡断熱
材が内箱側に流出するのを防止し、発泡時の発生するガ
スだけを外部に逃がすことが出来るガラスウール等の断
熱片。2. Description of the Related Art A conventional technique will be described with reference to FIGS. 5 and 6. 1 is a refrigerator main body, and this refrigerator main body 1 is an outer box 2.
It comprises an inner box 3, a heat insulating material 4, a partition wall 5, a freezer compartment door 6, a refrigerating compartment door 7 and a compressor 8. 9 is a cooler, 10
Is a blower for forcibly blowing the cool air cooled by the cooler 9 to the freezing compartment 11 and the refrigerating compartment 12, and 13 is the blower 1
It is a drive motor that drives 0. When mounting the drive motor, a motor case 14 is used to mount the drive motor between heat insulating walls formed by the outer box 2 and the inner box 3, as shown in FIG. 15
Reference numeral a denotes a lid that covers the stock solution injection port 15 of the foamed heat insulating material. Reference numeral 16 denotes a gas vent hole, which is provided in the inner box near the inlet 15. Reference numeral 17 is a heat insulating piece such as glass wool which prevents the foamed heat insulating material from flowing out from the gas vent hole 16 to the inner box side and allows only the gas generated during foaming to escape to the outside.
【０００３】次にガス抜孔１６、注入口１５の位置関係
及び断熱材４の成形について図６において説明すると、
発泡断熱材成形時には図６に示す如く冷蔵庫本体開口を
下側にして背面側が上方に位置するようにして、しかも
内雇２１、外雇２２を付けた後、注入口１５より発泡断
熱材の原液を注入する。この時に上記箱体姿勢はＡ側が
低くなるよう傾斜させて置くものである。このようにし
て置くことにより、断熱材４の最終充填部を機械室天井
部とすることが出来るものである。Next, the positional relationship between the gas vent hole 16 and the injection port 15 and the molding of the heat insulating material 4 will be described with reference to FIG.
As shown in FIG. 6, when molding the foam insulation material, the refrigerator main body opening is on the lower side and the back side is located on the upper side. Inject. At this time, the box body is tilted so that the side A is lowered. By arranging in this way, the final filling part of the heat insulating material 4 can be used as the ceiling part of the machine room.
【０００４】次に最終充填部の断熱材４の形成とガス抜
きの関係について記載すると原液のフォーム化に伴って
発生するガスは、通常の場合フォームに押し出されるよ
う最終充填部に向かって流れるこのガスは、内箱３に設
けたガス抜き孔１６より内箱の庫内側に押し出される。
しかし、このようなガス抜き孔１６であった場合、上記
断熱材４のフォームが先行し、穴を塞ぐようなことがあ
ると、上記ガスは行き場を失いボイドとして発泡断熱材
中に残る可能性が応々にしてあった。Next, the relationship between the formation of the heat insulating material 4 in the final filling portion and the degassing will be described. In general, the gas generated when the undiluted solution is foamed flows toward the final filling portion so as to be extruded into the foam. The gas is pushed out through the gas vent holes 16 provided in the inner box 3 to the inside of the inner box.
However, in the case of such a gas vent hole 16, if the foam of the heat insulating material 4 precedes and may close the hole, the gas may lose its place and remain as a void in the foam heat insulating material. Was at times.
【０００５】また、上記ボイドの出来やすい断熱材４の
最終充填部が機械室天井部に位置していた為、ここから
の熱侵入が大きいという問題もあった。Further, since the final filling portion of the heat insulating material 4 in which the above-mentioned voids are likely to be formed is located on the ceiling portion of the machine room, there is a problem that heat is invaded from here.
【０００６】尚、この種従来例には特開昭５５−４３３
１８号公報等がある。A conventional example of this kind is disclosed in Japanese Patent Laid-Open No. 55-433.
No. 18, etc. are available.
【０００７】[0007]
【発明が解決しようとする課題】従来の技術で説明した
冷蔵庫等の断熱箱体に於いては、次のような問題点があ
った。The heat-insulating box body of the refrigerator or the like described in the prior art has the following problems.
【０００８】１．内箱にガス抜き孔を設けるようにした
ものにあっては、全部のガスがガス抜孔より抜ける前に
内箱に沿って流れてきたフォームで覆われ、断熱材中に
ガスをとじ込めてしまう可能性があった。これを少しで
も減らすべく表面積を増やすグラスウールの断熱性能
は、発泡断熱材に比較して約１／３位しかないので、あ
まり大きなものは使用出来ない。あるいは断熱性能が劣
る等の問題があった。1. In the case where the inner box has a vent hole, all the gas is covered with the foam that has flowed along the inner box before it escapes from the vent hole, and the gas is trapped in the heat insulating material. There was a possibility. The heat insulation performance of glass wool, which increases the surface area to reduce this even a little, is only about 1/3 of that of foam insulation, so a very large one cannot be used. Alternatively, there are problems such as poor heat insulation performance.
【０００９】２．圧縮機の上部天井部の断熱厚さにおい
ては、圧縮機周囲の温度が庫内側に入るのを防止するた
めに、断熱厚さを厚くしていたため、ウレタン使用量増
加、一般に冷蔵室下部に位置する野菜専用室内容積の減
少、野菜専用室内温度上昇等の問題があった。2. Regarding the insulation thickness of the upper ceiling of the compressor, in order to prevent the temperature around the compressor from entering the inside of the refrigerator, the insulation thickness was increased. There were problems such as a decrease in the volume of the vegetables-only room and a rise in the temperature of the vegetables-only room.
【００１０】３．近年大形化が進み、冷蔵庫の重心が高
くなり不安定の傾向にあるという問題があった。3. In recent years, there has been a problem that the size of the refrigerator has increased and the center of gravity of the refrigerator has risen, which is unstable.
【００１１】[0011]
【課題を解決するための手段】本発明によれば、ガス抜
き溝を有する真空断熱材を断熱箱体中のウレタン最終充
填部兼箱体の機械室部になる断熱壁の圧縮機の上部天井
部分にあたる硬質ウレタンフォーム中に埋設する。この
真空断熱材は真空排気して、熱伝導率を従来の硬質ウレ
タンフォーム等より１／１０位高めたパネル状のもの
で、パネル化するための真空状態でのガス発生しにくい
コア材（例えば硬質ウレタンフォームより比重が大きい
ホワイトカーボン等）と、発生ガスおよび侵入ガスを抑
制するゲッター材（吸湿剤、ガス吸着剤等）を内蔵した
ものである。According to the present invention, an upper ceiling of a compressor having a heat insulating wall, in which a vacuum heat insulating material having a degassing groove serves as a final urethane filling portion in a heat insulating box and also serves as a machine room of the box, is provided. It is embedded in the rigid urethane foam that corresponds to the part. This vacuum heat insulating material is a panel-like material that has been evacuated to a vacuum and has a thermal conductivity about 1/10 higher than that of conventional rigid urethane foam, etc. It has a built-in getter material (hygroscopic agent, gas adsorbent, etc.) that suppresses generated gas and invaded gas, and white carbon, etc., which has a larger specific gravity than hard urethane foam.
【００１２】従来は硬質ウレタンフォーム熱伝導率０．
０１Ｗ／ｍｈ℃のものを使用していたが、今回用いるホ
ワイトカーボン等を含むコア材を内蔵し、真空排気され
た真空断熱材の熱伝導率は０．００１Ｗ／ｍｈ℃にな
り、断熱効果が非常に向上し、ボイド発生を防止し、冷
却効率のよい冷蔵庫が提供される。Conventionally, rigid urethane foam has a thermal conductivity of 0.
Although the one with 01 W / mh ° C was used, the core material containing white carbon etc. used this time was built in, and the thermal conductivity of the vacuum heat-insulated material that was evacuated to 0.001 W / mh ° C. Provided is a refrigerator that is highly improved, prevents the occurrence of voids, and has good cooling efficiency.
【００１３】本発明によれば、上記記載位置にこの真空
断熱材を取付けることにより、ガス抜きが確実に行わ
れ、もし未充填となっても熱伝導率の小さい冷却効率の
よい冷蔵庫が提供される。According to the present invention, by attaching this vacuum heat insulating material to the above described position, degassing is surely performed, and even if it is not filled, a refrigerator having a small thermal conductivity and a high cooling efficiency is provided. It
【００１４】本発明によれば、上記記載位置にこの真空
断熱材を取付けることにより、真空断熱材の密度は０．
２４ｇ／cm3、従来のウレタンは０．０３３ｇ／cm3と密
度が約１０倍になっているため、冷蔵庫本体の重心を下
げることが出来き、安定性の良い冷蔵庫が提供される。According to the present invention, by attaching this vacuum heat insulating material to the above-mentioned position, the density of the vacuum heat insulating material is 0.
24 g / cm 3, a conventional urethane for 0.033 g / cm 3 and density is about 10 times, Ki can lower the center of gravity of the refrigerator body, good stability refrigerator is provided.
【００１５】本発明によれば、上記記載位置にこの真空
断熱材を取付けることにより、断熱壁厚を薄くすること
ができるため、野菜専用室の内容積拡大、温度上昇防止
ができ、且つウレタン使用量低減ができることから容量
拡大、廃家電対応の冷蔵庫を提供することが出来る。According to the present invention, by attaching this vacuum heat insulating material to the above described position, the thickness of the heat insulating wall can be reduced, so that it is possible to expand the internal volume of the vegetable-only chamber and prevent the temperature rise, and use urethane. Since the volume can be reduced, it is possible to expand the capacity and provide a refrigerator compatible with home appliances.
【００１６】[0016]
【作用】本発明は以上説明した如く、外箱と内箱とが作
る空間部に背面注入口より発泡断熱材を充填するように
した断熱箱体に於いて、断熱箱体中のウレタン最終充填
部兼箱体の機械室部になる断熱壁の圧縮機の上部天井部
分にあたる硬質ウレタンフォームの中にガスを断熱箱体
外に逃がす為のガス抜き溝を有する真空断熱材を埋設し
てボイドの発生を防止する。もしも真空断熱材のガス抜
き溝が未充填となっても、真空断熱材で形成しているの
で熱伝導率が大きくなることはない。As described above, according to the present invention, in the heat-insulating box body in which the space formed by the outer box and the inner box is filled with the foamed heat insulating material from the back filling port, the urethane is finally filled in the heat insulating box body. Of a void by embedding a vacuum heat insulating material with a gas vent groove for letting gas escape to the outside of the heat insulating box body in the hard urethane foam that corresponds to the upper ceiling part of the compressor of the heat insulating wall that becomes the machine room part of the box body Prevent occurrence. Even if the gas vent groove of the vacuum heat insulating material is not filled, the heat conductivity does not increase because it is made of the vacuum heat insulating material.
【００１７】また、断熱材の中に真空断熱材を介在させ
ることにより、従来のウレタンよりも薄く重量があるた
め、圧縮機上部天井面の断熱厚が薄く出来、熱の野菜専
用室への侵入を防ぎ且つ、野菜専用室内容積の拡大、冷
蔵庫本体の重心位置の低下が図れる。Further, by interposing a vacuum heat insulating material in the heat insulating material, since it is thinner and heavier than the conventional urethane, the heat insulating thickness of the upper ceiling surface of the compressor can be made thin, and the heat can enter the room dedicated to vegetables. In addition, the volume of the vegetable-only room can be increased and the center of gravity of the refrigerator body can be lowered.
【００１８】[0018]
【実施例】本発明の詳細を図１から図４を用いて実施例
を説明すると、１は冷蔵庫本体、この冷蔵庫本体１は、
外箱２、内箱３、断熱材４、中仕切壁５、冷凍室扉６、
冷蔵室扉７、圧縮機８より構成されている。９は冷却
器、１０はこの冷却器９で冷却された冷気を冷凍室１１
と冷蔵室１２に強制的に送風する送風機、１３は先の送
風機１０を駆動する駆動モータである。この駆動モータ
の取付けにあたっては図２に示す如くモータケース１４
を用いて外箱２と内箱３を介して取付けてある。１５ａ
は発泡断熱材の原液注入口１５をカバーする蓋である。
１６はガス抜孔である。１８は図３に示すようにガス抜
き溝１９を設けた真空断熱材で断熱材４の中に介在させ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described with reference to FIGS. 1 to 4. 1 is a refrigerator main body, and this refrigerator main body 1 is
Outer box 2, inner box 3, heat insulating material 4, partition wall 5, freezer compartment door 6,
It is composed of a refrigerator compartment door 7 and a compressor 8. Reference numeral 9 denotes a cooler, and 10 denotes cold air cooled by the cooler 9 in a freezer compartment 11.
And a blower for forcibly blowing air to the refrigerating chamber 12, and a drive motor 13 for driving the blower 10 described above. When mounting this drive motor, as shown in FIG.
Is attached via an outer box 2 and an inner box 3. 15a
Is a lid for covering the undiluted solution injection port 15 of the foamed heat insulating material.
Reference numeral 16 is a gas vent hole. Reference numeral 18 is a vacuum heat insulating material provided with a gas vent groove 19 as shown in FIG.
【００１９】次にガス抜き孔１６、注入口１５の位置関
係及び断熱材４の成形について図２に於いて説明する
と、断熱材成形時には図２に示す如く冷蔵庫本体開口を
下側にして背面側が上方に位置するようにして、しかも
内雇２１、外雇２２を付けた後、注入口１５より発泡断
熱材４の原液を注入する。注入された原液は従来例と等
しくＡ部に至り矢印の如く発泡立上りを始め、断熱材４
の最終充填部近くに設けられた真空断熱材１８のガス抜
き溝１９を通りガス抜き孔１６から内雇側に排出され
る。このことにより真空断熱材１８は、ガスを巻き込ん
だボイドのない状態の発泡断熱材により覆われるもので
ある。Next, the positional relationship between the gas vent hole 16 and the inlet 15 and the molding of the heat insulating material 4 will be described with reference to FIG. 2. When molding the heat insulating material, as shown in FIG. After the inner worker 21 and the outer worker 22 are attached so as to be positioned above, the stock solution of the foamed heat insulating material 4 is injected from the injection port 15. The injected undiluted solution reaches the portion A in the same manner as in the conventional example and starts foaming as shown by the arrow, and the heat insulating material 4
Through the gas vent groove 19 of the vacuum heat insulating material 18 provided in the vicinity of the final filling part of the above. As a result, the vacuum heat insulating material 18 is covered with the foam heat insulating material in which gas is trapped and which is free of voids.
【００２０】また、この真空断熱材１８及び１８ａは、
図４に示すようにホワイトカーボン等を含むコア材２０
より形成され密度０．２４ｇ／cm3で従来のウレタンは
０．０３３ｇ／cm3と密度が約１０倍以上大きいので、
上記記載位置に真空断熱材を介在させることにより冷蔵
庫本体の重心が下がるものである。The vacuum heat insulating materials 18 and 18a are
As shown in FIG. 4, the core material 20 containing white carbon etc.
Since more conventional urethane with the formation density 0.24 g / cm 3 is 0.033 g / cm 3 and a density of about 10 times or more greater,
The center of gravity of the refrigerator main body is lowered by interposing the vacuum heat insulating material at the above described position.
【００２１】[0021]
【発明の効果】以上説明したように本発明によればガス
抜き溝付き真空断熱材を断熱箱体中のウレタン最終充填
部兼箱体の機械室部になる断熱壁の圧縮機の上部天井部
分にあたる硬質ウレタンフォームの中に埋設することに
より、ボイル発生防止、冷却効率の向上、冷蔵庫本体の
重心位置の低下、高温となる圧縮機８の上部から冷蔵室
下部の野菜専用室への熱侵入防止、野菜専用室の内容積
拡大が出来る。As described above, according to the present invention, the vacuum insulating material with the gas venting groove serves as the final urethane filling part in the heat insulating box and also serves as the machine room of the box. By embedding it in the hard urethane foam that corresponds to it, it prevents boil generation, improves cooling efficiency, lowers the center of gravity of the refrigerator body, and prevents heat from entering from the upper part of the compressor 8 which is hot to the vegetable compartment under the refrigerating room. , The internal volume of the vegetable room can be expanded.
【図１】本発明の実施例による真空断熱材を断熱材の中
に介在した例を示す図である。FIG. 1 is a view showing an example in which a vacuum heat insulating material according to an embodiment of the present invention is interposed in a heat insulating material.
【図２】本発明の実施例による真空断熱材を断熱材の中
に介在させるための発泡方法を示す図である。FIG. 2 is a view showing a foaming method for interposing a vacuum heat insulating material in a heat insulating material according to an embodiment of the present invention.
【図３】ガス抜き溝付き真空断熱材を示す図である。FIG. 3 is a view showing a vacuum heat insulating material with a gas vent groove.
【図４】真空断熱材の断面図である。FIG. 4 is a sectional view of a vacuum heat insulating material.
【図５】本発明の従来例による真空断熱材を断熱材の中
に介在した例を示す図である。FIG. 5 is a view showing an example in which a vacuum heat insulating material according to a conventional example of the present invention is interposed in a heat insulating material.
【図６】本発明の従来例による真空断熱材を断熱材の中
に介在させるための発泡方法を示す図である。FIG. 6 is a view showing a foaming method for interposing a vacuum heat insulating material in a heat insulating material according to a conventional example of the present invention.
１…冷蔵庫本体、 ２…外箱、 ３…内箱、 ４…断熱材、 ５…中仕切壁、 ６…冷凍室扉、 ７…冷蔵室扉、 ８…圧縮機、 ９…冷却器、 １０…送風機、 １１…冷凍室、 １２…冷蔵室、 １３…駆動モータ、 １４…モータケース、 １５…原液注入口、 １５ａ・・注入口の蓋、 １６…ガス抜き孔、 １７…断熱片、 １８…真空断熱材、 １９…ガス抜き溝、 ２０…コア材、 ２１…内雇、 ２２…外雇。 DESCRIPTION OF SYMBOLS 1 ... Refrigerator body, 2 ... Outer box, 3 ... Inner box, 4 ... Insulation material, 5 ... Partition wall, 6 ... Freezer compartment door, 7 ... Refrigerator compartment door, 8 ... Compressor, 9 ... Cooler, 10 ... Blower, 11 ... Freezer compartment, 12 ... Refrigerator compartment, 13 ... Drive motor, 14 ... Motor case, 15 ... Stock solution inlet, 15a ... Inlet lid, 16 ... Gas vent, 17 ... Insulating piece, 18 ... Vacuum Insulation material, 19 ... Gas vent groove, 20 ... Core material, 21 ... Internal hiring, 22 ... External hiring.
Claims (3)
を充填発泡させ、圧縮機等の収納させる機械室天井部分
にあたる断熱壁部が、該硬質ウレタンフォームの最終充
填部となる断熱箱体において、前記硬質ウレタンフォー
ムの最終充填部に真空断熱材を埋設することを特徴とし
た断熱箱体。1. A heat-insulating box in which a hard urethane foam is filled and foamed between an outer box and an inner box, and a heat-insulating wall portion corresponding to a machine room ceiling for accommodating a compressor or the like becomes a final filling portion of the hard urethane foam. In the body, a vacuum heat insulating material is embedded in the final filling portion of the rigid urethane foam, the heat insulating box body.
スを断熱箱体の内箱側に排出する為のガス抜き溝を有す
る真空断熱材をガス抜き溝を内箱側に埋設するように内
箱に取付けたことを特徴とした請求項１記載の断熱箱
体。2. A vacuum heat insulating material having a gas vent groove for discharging gas generated during foaming of rigid urethane foam to the inner box side of the heat insulating box body is provided in the inner box so that the gas vent groove is buried in the inner box side. The heat insulating box according to claim 1, which is attached.
ボン等）が、硬質ウレタンフォームの比重より大きい比
重のもので形成されたことを特徴とした請求項１記載の
断熱箱体。3. The heat insulating box according to claim 1, wherein the core material (for example, white carbon) of the vacuum heat insulating material is formed with a specific gravity larger than that of the hard urethane foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31470393A JPH07167551A (en) | 1993-12-15 | 1993-12-15 | Thermal insulating box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31470393A JPH07167551A (en) | 1993-12-15 | 1993-12-15 | Thermal insulating box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07167551A true JPH07167551A (en) | 1995-07-04 |
Family
ID=18056541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31470393A Pending JPH07167551A (en) | 1993-12-15 | 1993-12-15 | Thermal insulating box |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07167551A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11166688A (en) * | 1997-12-02 | 1999-06-22 | Sanyo Electric Co Ltd | Heat insulating material and manufacture thereof |
| WO2005121669A1 (en) * | 2004-06-09 | 2005-12-22 | Matsushita Electric Industrial Co., Ltd. | Refrigerator |
| JP2008101838A (en) * | 2006-10-19 | 2008-05-01 | Matsushita Electric Ind Co Ltd | Refrigerator |
| JP2008101792A (en) * | 2006-10-17 | 2008-05-01 | Matsushita Electric Ind Co Ltd | Refrigerator |
| CN104380020A (en) * | 2012-06-20 | 2015-02-25 | 松下知识产权经营株式会社 | Insulating wall, insulating box, and manufacturing method therefor |
| JP2017032176A (en) * | 2015-07-29 | 2017-02-09 | 日立アプライアンス株式会社 | Water heater and manufacturing method of the same |
| JP2017161125A (en) * | 2016-03-08 | 2017-09-14 | 日立アプライアンス株式会社 | refrigerator |
-
1993
- 1993-12-15 JP JP31470393A patent/JPH07167551A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11166688A (en) * | 1997-12-02 | 1999-06-22 | Sanyo Electric Co Ltd | Heat insulating material and manufacture thereof |
| WO2005121669A1 (en) * | 2004-06-09 | 2005-12-22 | Matsushita Electric Industrial Co., Ltd. | Refrigerator |
| JP2008101792A (en) * | 2006-10-17 | 2008-05-01 | Matsushita Electric Ind Co Ltd | Refrigerator |
| JP2008101838A (en) * | 2006-10-19 | 2008-05-01 | Matsushita Electric Ind Co Ltd | Refrigerator |
| CN104380020A (en) * | 2012-06-20 | 2015-02-25 | 松下知识产权经营株式会社 | Insulating wall, insulating box, and manufacturing method therefor |
| CN104380020B (en) * | 2012-06-20 | 2016-09-07 | 松下知识产权经营株式会社 | Thermal wall and heat insulating box and manufacture method thereof |
| JP2017032176A (en) * | 2015-07-29 | 2017-02-09 | 日立アプライアンス株式会社 | Water heater and manufacturing method of the same |
| JP2017161125A (en) * | 2016-03-08 | 2017-09-14 | 日立アプライアンス株式会社 | refrigerator |
| CN107166851A (en) * | 2016-03-08 | 2017-09-15 | 日立空调·家用电器株式会社 | Refrigerator |
| CN107166851B (en) * | 2016-03-08 | 2019-08-06 | 日立空调·家用电器株式会社 | Refrigerator |
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