JP2013088036A - Thermal insulation box, refrigerator, and storage type water heater - Google Patents

Thermal insulation box, refrigerator, and storage type water heater Download PDF

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JP2013088036A
JP2013088036A JP2011229331A JP2011229331A JP2013088036A JP 2013088036 A JP2013088036 A JP 2013088036A JP 2011229331 A JP2011229331 A JP 2011229331A JP 2011229331 A JP2011229331 A JP 2011229331A JP 2013088036 A JP2013088036 A JP 2013088036A
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box
film
outer box
heat insulation
core mat
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Daigoro Kamoto
大五郎 嘉本
Hisashi Echigoya
恒 越後屋
Kuninari Araki
邦成 荒木
Yushi Arai
祐志 新井
Yasuto Terauchi
康人 寺内
Takayuki Nakakawaji
孝行 中川路
Takashi Izeki
崇 井関
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Hitachi Appliances Inc
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Abstract

PROBLEM TO BE SOLVED: To provide a thermal insulation box 1 which allows vacuum thermal insulating materials 9 to be arranged even at bends 2b forming the sides of the thermal insulation box 1.SOLUTION: In a heat insulation box 1 filled with hard urethane foam 4 between an outer box 2 and an inner box 3, a film 5 and a core mat 6 are arranged at the inner box 3 side of bends 2b forming the sides of the outer box 2, a gas barrier container 8 storing the core mat 6 includes the outer box 2 and a film 5, and the inside of the gas barrier container 8 is sealed up and put in a pressure reducing state. The film 5 is configured in a multilayer structure including a metal deposition film. The core mat 6 includes a notch 6a following the bends 2b of the outer box 2. The outer box 2 includes a plurality of adjacent bends 2b, wherein a curvature radius at each of the bends 2b of the inner circumferential surfaces 2a of the outer box 2 is larger than a thickness of the core mat 6. In addition, the outer box 2 includes a plurality of inner circumferential surfaces 2a connected to each other at the bends 2b, and the core mat 6 is successively brought into pressure contact with the plurality of inner circumferential surfaces 2a so as to cover the plurality of inner circumferential surfaces 2a.

Description

本発明は、断熱箱体、及び、それを搭載した冷蔵庫と貯湯式給湯器に関する。   The present invention relates to a heat insulating box, a refrigerator equipped with the heat insulating box, and a hot water storage type water heater.

近年、地球環境保護の観点また省エネルギ化の観点から、家電製品や産業機器に用いられる断熱箱体の断熱性向上が検討されている。断熱箱体に用いる断熱材としては、樹脂フォームや有機、無機の繊維が用いられているが、断熱箱体の断熱性を向上しようとした場合、断熱材の厚さを厚くする必要がある。断熱材の厚さが厚くなると家電製品や産業機器等の製品の全容量に対して断熱材以外の部品を実装できる容量の割合が低くなってしまう。そこで、樹脂フォーム等より約１０倍程度、断熱性に優れる真空断熱材が提案されている（例えば、特許文献１、２等参照）。   In recent years, from the viewpoint of protecting the global environment and from the viewpoint of energy saving, improvement of heat insulation properties of heat insulating boxes used for home appliances and industrial equipment has been studied. As the heat insulating material used for the heat insulating box, resin foam, organic, and inorganic fibers are used. However, in order to improve the heat insulating property of the heat insulating box, it is necessary to increase the thickness of the heat insulating material. When the thickness of the heat insulating material is increased, the ratio of the capacity for mounting components other than the heat insulating material to the total capacity of products such as home appliances and industrial equipment is reduced. Therefore, a vacuum heat insulating material that is about 10 times as good as resin foam and has excellent heat insulating properties has been proposed (see, for example, Patent Documents 1 and 2).

特開２００５−３００００５号公報JP 2005-300005 A 特開平１１−１４１７９６号公報Japanese Patent Application Laid-Open No. 11-141796

断熱箱体は、内部にものが収納できるように、外観は、直方体の形状をしている。そのため、断熱箱体には直方体の辺となる屈曲部が存在する。通常、真空断熱材は、平板状のパネルの形状をしているので、断熱箱体の直方体の各面毎に真空断熱材を配置することになり、その屈曲部には、隣接する真空断熱材の間に隙間が生じていた。屈曲部にも真空断熱材を配置できれば、断熱箱体の断熱性を一層高められると考えられる。   The exterior of the heat insulating box is a rectangular parallelepiped so that things can be stored inside. Therefore, the heat insulation box has a bent portion that is a side of a rectangular parallelepiped. Usually, since the vacuum heat insulating material has the shape of a flat panel, a vacuum heat insulating material will be arranged for each surface of the rectangular parallelepiped of the heat insulating box, and the vacuum heat insulating material adjacent to the bent portion thereof. There was a gap between them. If a vacuum heat insulating material can be arrange | positioned also in a bending part, it will be thought that the heat insulation of a heat insulation box can be improved further.

そこで、本発明の目的は、断熱箱体の辺となる屈曲部にも、真空断熱材を配置可能な断熱箱体を提供することにある。また、このような断熱箱体を搭載する冷蔵庫又は貯湯式給湯器を提供することにある。   Then, the objective of this invention is providing the heat insulation box which can arrange | position a vacuum heat insulating material also to the bending part used as the edge of a heat insulation box. Another object of the present invention is to provide a refrigerator or a hot water storage type water heater equipped with such a heat insulating box.

前記目的を達成するために、本発明は、外箱と内箱の間に硬質発泡ウレタンを充填した断熱箱体において、
前記外箱の辺を成す屈曲部の内箱側に設けられたフィルムとコアマットを有し、
前記外箱と前記フィルムとで、前記コアマットを収納するガスバリア容器を構成し、
前記ガスバリア容器内は、密封され減圧状態になっていることを特徴としている。また、このような断熱箱体を搭載する冷蔵庫又は貯湯式給湯器であることを特徴としている。 In order to achieve the above object, the present invention provides a heat insulating box filled with rigid urethane foam between an outer box and an inner box.
Having a film and a core mat provided on the inner box side of the bent portion forming the side of the outer box;
The outer box and the film constitute a gas barrier container that houses the core mat,
The inside of the gas barrier container is sealed and in a reduced pressure state. Moreover, it is the refrigerator or hot water storage type water heater which mounts such a heat insulation box.

本発明によれば、断熱箱体の辺となる屈曲部にも、真空断熱材を配置可能な断熱箱体を提供できる。そして、このような断熱箱体を搭載する冷蔵庫又は貯湯式給湯器を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the heat insulation box which can arrange | position a vacuum heat insulating material also to the bending part used as the edge of a heat insulation box can be provided. And the refrigerator or hot water storage type water heater which mounts such a heat insulation box can be provided.

本発明の第１の実施形態に係る断熱箱体の断面図である。It is sectional drawing of the heat insulation box which concerns on the 1st Embodiment of this invention. 本発明の第１の実施形態に係る断熱箱体の分解斜視図であり、（ａ）は内箱の斜視図であり、（ｂ）はフィルムの斜視図であり、（ｃ）は展開したコアマットの斜視図であり、（ｄ）は外箱の斜視図である。It is a disassembled perspective view of the heat insulation box which concerns on the 1st Embodiment of this invention, (a) is a perspective view of an inner box, (b) is a perspective view of a film, (c) is a developed core mat (D) is a perspective view of an outer case. （ａ）は外箱に挿入前のコアマットの一部分の断面図であり、（ｂ）は外箱に挿入後のコアマットの一部分（屈曲部の周辺）の断面図であり、（ｃ）はフィルム装着後の真空断熱材の一部分（屈曲部の周辺）の断面図である。(A) is a sectional view of a part of the core mat before being inserted into the outer box, (b) is a sectional view of a part of the core mat (around the bent portion) after being inserted into the outer box, and (c) is a film mounting It is sectional drawing of a part (periphery of a bending part) of a subsequent vacuum heat insulating material. 本発明の第１の実施形態に係る断熱箱体の一部分（屈曲部の周辺）の断面図である。It is sectional drawing of a part (periphery of a bending part) of the heat insulation box which concerns on the 1st Embodiment of this invention. 本発明の第２の実施形態に係る断熱箱体の分解斜視図であり、（ａ）は内箱の斜視図であり、（ｂ）は展開したフィルムの斜視図であり、（ｃ）は展開したコアマットの斜視図であり、（ｄ）は展開した外箱の斜視図である。It is a disassembled perspective view of the heat insulation box which concerns on the 2nd Embodiment of this invention, (a) is a perspective view of an inner box, (b) is a perspective view of the expand | deployed film, (c) is expand | deployed It is a perspective view of the made core mat, (d) is a perspective view of the developed outer box. （ａ）は本発明の第２の実施形態の箱成形前の真空断熱材の一部分の断面図であり、（ｂ）は本発明の第２の実施形態に係る断熱箱体の一部分（屈曲部の周辺）の断面図である。(A) is sectional drawing of the part of the vacuum heat insulating material before box shaping | molding of the 2nd Embodiment of this invention, (b) is a part (bending part) of the heat insulation box which concerns on the 2nd Embodiment of this invention. FIG. 本発明の第３の実施形態に係る断熱箱体の一部分（屈曲部の周辺）の断面図である。It is sectional drawing of a part (periphery of a bending part) of the heat insulation box which concerns on the 3rd Embodiment of this invention. 本発明の第４の実施形態に係る断熱箱体の一部分（屈曲部の周辺）の断面図である。It is sectional drawing of a part (periphery of a bending part) of the heat insulation box which concerns on the 4th Embodiment of this invention. 本発明の第５の実施形態に係る冷蔵庫（冷凍庫を含む）の正面図である。It is a front view of the refrigerator (a freezer is included) which concerns on the 5th Embodiment of this invention. 本発明の第６の実施形態に係る貯湯式給湯器の斜視図である。It is a perspective view of the hot water storage type water heater which concerns on the 6th Embodiment of this invention.

次に、本発明の実施形態について、適宜図面を参照しながら詳細に説明する。なお、各図において、共通する部分には同一の符号を付し重複した説明を省略する。また、本発明は、ここで取り上げた複数の実施形態の個々に限定されることはなく、適宜組み合わせてもよい。   Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. In each figure, common portions are denoted by the same reference numerals, and redundant description is omitted. Further, the present invention is not limited to each of the plurality of embodiments taken up here, and may be combined as appropriate.

（第１の実施形態）
図１に、本発明の第１の実施形態に係る断熱箱体１の断面図を示す。断熱箱体１は、内部にものが収納できるように、内部空間を有し、その内部空間と外部とを連通させる開口１ａを有している。断熱箱体１は、その開口１ａを塞いだとすれば、その外観は、概ね直方体の形状をしている場合が多く、以下でも、直方体を例に説明する。ただ、本発明は、直方体に限らず、円柱や三角柱等の形状にも適用できるのは明らかである。その例とする直方体形状の断熱箱体１には、複数の面と、辺となる複数の屈曲部２ｂが存在する。 (First embodiment)
In FIG. 1, sectional drawing of the heat insulation box 1 which concerns on the 1st Embodiment of this invention is shown. The heat insulation box 1 has an internal space so that things can be stored therein, and has an opening 1a that allows the internal space to communicate with the outside. If the heat insulating box 1 closes the opening 1a, the appearance of the heat insulating box 1 is generally a rectangular parallelepiped in many cases, and a rectangular parallelepiped will be described below as an example. However, it is apparent that the present invention is applicable not only to a rectangular parallelepiped but also to a shape such as a cylinder or a triangular prism. The rectangular parallelepiped heat insulation box 1 as an example includes a plurality of surfaces and a plurality of bent portions 2b serving as sides.

断熱箱体１は、外箱２と、内箱３とを有している。外箱２と内箱３の間の空間には、硬質発泡ウレタン４が充填されている。また、外箱２と内箱３の間の外箱２側には、すなわち、外箱２の内箱側には、フィルム５とコアマット６が設けられている。   The heat insulating box 1 has an outer box 2 and an inner box 3. The space between the outer box 2 and the inner box 3 is filled with hard foamed urethane 4. A film 5 and a core mat 6 are provided on the outer box 2 side between the outer box 2 and the inner box 3, that is, on the inner box side of the outer box 2.

外箱２は、屈曲部２ｂにおいて互いに連結した複数の内周面２ａを有している。フィルム５とコアマット６は、外箱２の複数の内周面２ａと複数の屈曲部２ｂに、沿い、対向するように配置されている。コアマット６は、外箱２とフィルム５とに挟まれている。外箱２とフィルム５とで、空気等のガスが内部に入るバリアとなる気密性の高いガスバリア容器８が構成されている。外箱２の縁部の全周にわたって、フィルム５の縁部に配置されたフィルム溶着部５ａが溶着されている。ガスバリア容器８の内部には、コアマット６が収納されている。ガスバリア容器８内は、密封され、前記内周面２ａにおいても、前記屈曲部２ｂにおいても、減圧状態になっている。これにより、コアマット６は、大気圧によって、内周面２ａにわたって連続的に、複数の内周面２ａに圧接している。また、コアマット６は、フィルム５に圧接している。すなわち、コアマット６は、外箱２の複数の内周面２ａと複数の屈曲部２ｂにおいて、片側がフィルム５に、もう一方の片側が外箱２に圧接している。なお、コアマット６内には、水分や二酸化炭素等のガスを吸着するゲッター剤７が設けられている。   The outer box 2 has a plurality of inner peripheral surfaces 2a connected to each other at the bent portion 2b. The film 5 and the core mat 6 are disposed so as to face and face the plurality of inner peripheral surfaces 2 a and the plurality of bent portions 2 b of the outer box 2. The core mat 6 is sandwiched between the outer box 2 and the film 5. The outer box 2 and the film 5 constitute a gas barrier container 8 with high airtightness that serves as a barrier for gas such as air to enter. A film weld 5a disposed on the edge of the film 5 is welded over the entire circumference of the edge of the outer box 2. A core mat 6 is housed inside the gas barrier container 8. The gas barrier container 8 is hermetically sealed and is in a reduced pressure state both at the inner peripheral surface 2a and at the bent portion 2b. As a result, the core mat 6 is in pressure contact with the plurality of inner peripheral surfaces 2a continuously over the inner peripheral surface 2a by atmospheric pressure. The core mat 6 is in pressure contact with the film 5. That is, the core mat 6 is in pressure contact with the film 5 on one side and the outer box 2 on the other side of the plurality of inner peripheral surfaces 2 a and the plurality of bent portions 2 b of the outer box 2. A getter agent 7 that adsorbs gas such as moisture and carbon dioxide is provided in the core mat 6.

コアマット６を収納するガスバリア容器８は、内部が減圧状態になっていることから、真空断熱材９として機能していると考えることができる。そして、この真空断熱材９を１部材として考えると、この真空断熱材９は、内箱３との間の空間に硬質発泡ウレタン４を充填する外箱として機能していると考えることができる。外箱２の内箱３側に外箱２を部材の一部とした真空断熱材９を形成することで熱伝導率が低く断熱特性に優れる断熱箱体１を実現できる。そして、断熱箱体１を形成する外箱２と真空断熱材９が一体となっていることから、外箱２の屈曲部２ｂにも真空断熱材９を配置することが可能となり、断熱性が一層高められた断熱箱体１を実現することができる。   The gas barrier container 8 that houses the core mat 6 can be considered to function as the vacuum heat insulating material 9 because the inside is in a reduced pressure state. If this vacuum heat insulating material 9 is considered as one member, it can be considered that this vacuum heat insulating material 9 functions as an outer box that fills the space between the inner box 3 and the hard foamed urethane 4. By forming the vacuum heat insulating material 9 having the outer box 2 as a part of the member on the inner box 3 side of the outer box 2, the heat insulating box body 1 having low heat conductivity and excellent heat insulating characteristics can be realized. And since the outer box 2 and the vacuum heat insulating material 9 which form the heat insulation box 1 are united, it becomes possible to arrange | position the vacuum heat insulating material 9 also to the bending part 2b of the outer box 2, and heat insulation is carried out. The heat insulation box 1 further enhanced can be realized.

外箱２には、鋼板を用いることができる。その鋼板には、通常、一般構造用鋼板を用いることが望ましい。鋼板の厚さは加工性を考慮して１．０ｍｍ以下が望ましい。１．０ｍｍを超える厚さの鋼板を用いることも可能であるが、後の加工が困難になることがあるため注意が必要である。また、鋼板の外周面は塗装等により適宜色付けすることができる。さらに、鋼板の内周面２ａに、フィルム５のフィルム溶着部５ａを溶着するための下地層を形成して、接着性を改良するための処理を施してもよい。   A steel plate can be used for the outer box 2. As the steel plate, it is usually desirable to use a general structural steel plate. The thickness of the steel sheet is preferably 1.0 mm or less in consideration of workability. Although it is possible to use a steel plate having a thickness of more than 1.0 mm, care must be taken because later processing may be difficult. Moreover, the outer peripheral surface of a steel plate can be appropriately colored by painting or the like. Furthermore, the base layer for welding the film welding part 5a of the film 5 may be formed in the internal peripheral surface 2a of a steel plate, and the process for improving adhesiveness may be given.

外箱２と一対となって真空断熱材９の外包材となるフィルム５については、さまざまな有機樹脂のフィルムを用いることができる。フィルム５には、金属蒸着膜を有するフィルム積層体を用いることができる。フィルム５の表面にアルミニウム（Ａｌ）等の金属を蒸着してガスのバリア性を向上することができる。ガスバリア性を向上させるため、アルミ箔をフィルム５に接着して用いることも可能であるが、アルミニウムの蒸着膜と比較してヒートブリッジが大きくなることがあるので注意が必要である。また、フィルム５は、複数のフィルムを積層して用いることが望ましい。フィルム５を積層フィルムとすることで、外箱２の鋼板と接着する面については鋼板と接着性の良いフィルムを配置することができ、断熱箱体１を構成する硬質発泡ウレタン４と接触する面には発泡ウレタンと接着性の良いフィルムを配置することができる。   Various films of organic resin can be used for the film 5 that forms a pair with the outer box 2 and serves as an outer packaging material of the vacuum heat insulating material 9. As the film 5, a film laminate having a metal vapor deposition film can be used. A gas barrier property can be improved by depositing a metal such as aluminum (Al) on the surface of the film 5. In order to improve the gas barrier properties, it is possible to use an aluminum foil adhered to the film 5, but care must be taken because a heat bridge may be larger than an aluminum vapor deposition film. The film 5 is preferably used by laminating a plurality of films. By making the film 5 into a laminated film, the surface that adheres to the steel plate of the outer box 2 can be disposed with a film having good adhesion to the steel plate, and the surface that contacts the rigid foamed urethane 4 constituting the heat insulating box 1 A foamed urethane and a film having good adhesiveness can be disposed.

外箱２とフィルム５とで区切られた空間を減圧すると大気圧により押され、空間を維持することができなくなってしまうため、この空間にスペーサとしてコアマット６を挿入しておくことが好ましい。コアマット６に、平均繊維径が約３〜６μｍのグラスウール製のマットを用いると、断熱箱体１の断熱性を最もよくすることができる。平均繊維径が６μｍを超えるグラスウールを用いることも可能であるが、断熱箱体１の断熱性が低下する可能性がある。また、平均繊維径が３μｍ未満のグラスウールを用いることも可能であるが、平均繊維径が３〜６μｍの繊維と比較して価格が高くなってしまい、環境への影響も懸念されることから今回は用いていない。グラスウールはガラスからできていることから、表面に水分を吸着していることが懸念される。吸着している水分は減圧された際に空間に放出され、断熱性能を低下させてしまうため、２００℃以上に加熱する前処理を行ってから使用することが望ましい。外箱２とフィルム５とで区切られた空間の減圧状態を保持するためガスを吸着するゲッター剤７を用いることができる。ゲッター剤７としては、二酸化炭素、酸素、窒素等のガスや、水蒸気を吸収するものであればよく、ドーソナイト、ハイドロタルサイト、金属水酸化物のゲッター剤、または、モレキュラーシーブ、シリカゲル、酸化カルシウム、ゼオライト、疎水性ゼオライト、活性炭、水酸化リチウム等を用いることができる。   If the space divided by the outer box 2 and the film 5 is depressurized, it is pushed by the atmospheric pressure and the space cannot be maintained. Therefore, it is preferable to insert the core mat 6 as a spacer in this space. When a glass wool mat having an average fiber diameter of about 3 to 6 μm is used for the core mat 6, the heat insulating property of the heat insulating box 1 can be best. Although it is possible to use glass wool having an average fiber diameter of more than 6 μm, the heat insulating property of the heat insulating box 1 may be lowered. It is also possible to use glass wool with an average fiber diameter of less than 3 μm, but this is because the price is higher than fibers with an average fiber diameter of 3 to 6 μm, and there are concerns about the impact on the environment. Is not used. Since glass wool is made of glass, there is a concern that moisture is adsorbed on the surface. Since the adsorbed moisture is released into the space when the pressure is reduced and the heat insulation performance is deteriorated, it is desirable to use it after performing a pretreatment of heating to 200 ° C. or higher. A getter agent 7 that adsorbs gas can be used to maintain the decompressed state of the space defined by the outer box 2 and the film 5. The getter agent 7 may be any material that absorbs gases such as carbon dioxide, oxygen, nitrogen, and water vapor, such as dawsonite, hydrotalcite, metal hydroxide getter agent, or molecular sieve, silica gel, calcium oxide. Zeolite, hydrophobic zeolite, activated carbon, lithium hydroxide and the like can be used.

発泡断熱材の一例である硬質発泡ウレタン（ウレタンフォーム）４は、ウレタン結合やウレア結合とイソシアヌレート結合を有するものである。硬質発泡ウレタン４は、独立気泡率が概ね８０％以上であり、独立気泡率を上げれば断熱性能を向上できる。硬質発泡ウレタン４を、外箱２と内箱３の間の空間に用いることで、断熱箱体１の断熱性を向上できる。   Hard foam urethane (urethane foam) 4 which is an example of a foam heat insulating material has a urethane bond, a urea bond, and an isocyanurate bond. The rigid foamed urethane 4 has a closed cell ratio of approximately 80% or more, and the heat insulation performance can be improved by increasing the closed cell ratio. By using the hard foamed urethane 4 in the space between the outer box 2 and the inner box 3, the heat insulating property of the heat insulating box 1 can be improved.

図２に、本発明の第１の実施形態に係る断熱箱体１の分解斜視図を示す。図２（ａ）は内箱３を示し、図２（ｂ）はフィルム５を示し、図２（ｃ）は展開したコアマット６を示し、図２（ｄ）は外箱２を示している。   In FIG. 2, the disassembled perspective view of the heat insulation box 1 which concerns on the 1st Embodiment of this invention is shown. 2A shows the inner box 3, FIG. 2B shows the film 5, FIG. 2C shows the developed core mat 6, and FIG. 2D shows the outer box 2.

まず、図２（ｄ）に示すように外箱２を用意する。そして、外箱２の５面の内周面２ａと屈曲部２ｂに合わせて、図２（ｃ）に示すように、コアマット６を成形する。コアマット６は、図２（ｃ）と図３（ａ）に示すように、外箱２の屈曲部２ｂに対応する位置に沿って切欠６ａを有している。これにより、図３（ｂ）に示すように、屈曲部２ｂにおける曲げによるコアマット６のつぶれを抑制することができる。そして、断熱箱体１の屈曲部２ｂにおいても、高い断熱性を得ることができる。この切欠６ａの形成には、コアマット６の成形時の切断に使用するカッタ等を用いることができる。コアマット６は、開口１ａから外箱２の内側に入れられる。そして、コアマット６の各部分が、対応する外箱２の内周面２ａに沿い対向するように配置される。コアマット６は、グラスウール同士が互いに絡み合い、こしがあるので、直立した内周面２ａにも立て掛けておくことができる。コアマット６のグラスウールには平均繊維径が４.５μｍのものを用い、使用前に２００℃の温度で３０分間のエージングを行っている。ゲッター剤７には合成ゼオライト（ユニオン昭和（株）製 モレキュラーシーブ１３Ｘ）を用いている。なお、コア材は折り曲げ可能であれば、その構成を特に限定するものではない。例えば、バインダーによって硬化していない柔軟性を有する構成、バインダーによる硬化層を有する構成、熱プレスによって圧縮された構成、抄紙の手法による構成、不織布の手法による構成等、公知のあらゆる構成のコア材を含むものとする。   First, the outer box 2 is prepared as shown in FIG. Then, as shown in FIG. 2C, the core mat 6 is formed in accordance with the five inner peripheral surfaces 2a and the bent portions 2b of the outer box 2. The core mat 6 has a notch 6a along a position corresponding to the bent portion 2b of the outer box 2 as shown in FIGS. 2 (c) and 3 (a). Thereby, as shown in FIG.3 (b), the collapse of the core mat 6 by the bending in the bending part 2b can be suppressed. And also in the bending part 2b of the heat insulation box 1, high heat insulation can be obtained. For the formation of the notches 6a, a cutter or the like used for cutting when the core mat 6 is formed can be used. The core mat 6 is placed inside the outer box 2 through the opening 1a. And each part of the core mat 6 is arrange | positioned so that it may oppose along the internal peripheral surface 2a of the corresponding outer case 2. As shown in FIG. The core mat 6 can be leaned against the upright inner peripheral surface 2a because the glass wool is entangled with each other and there is a strain. The glass wool of the core mat 6 has an average fiber diameter of 4.5 μm and is aged for 30 minutes at a temperature of 200 ° C. before use. For the getter agent 7, synthetic zeolite (Molecular sieve 13X manufactured by Union Showa Co., Ltd.) is used. The configuration of the core material is not particularly limited as long as it can be bent. For example, a core material having any known structure such as a structure having flexibility not cured by a binder, a structure having a hardened layer by a binder, a structure compressed by a hot press, a structure by a papermaking method, a structure by a nonwoven fabric method, etc. Shall be included.

次に、図２（ｂ）に示すように、箱型形状のフィルム５を用意する。フィルム５では、開口１ａが内部断面より広がり、その縁が全周にわたってフィルム溶着部５ａになっている。そして、フィルム５は、外箱２の開口１ａから、既にコアマット６が入っている外箱２の内側に入れられる。図３（ｃ）に示すように、フィルム５の各部分が、対応するコアマット６の各部分に沿い対向するように配置される。フィルム５には、ナイロンフィルム（厚さ１５μｍ）と、アルミ蒸着ポリエチレンテレフタレートフィルム（厚さ１２μｍ）と、アルミ蒸着ビニルアルコール共重合体フィルム（厚さ３０μｍ）と、ポリプロピレンフィルム（厚さ５０μｍ）とを、ドライラミネート法で積層したものを用いている。フィルム５は、もともとシート状であるが、箱型形状の展開図の形状に裁断される。そして、裁断されたフィルム５の対応する縁部同士を重ねて熱溶着し、箱型形状のフィルム５を作製している。外箱２とフィルム５のフィルム溶着部５ａは、あらかじめ、外箱２の接着面に下地層を形成した後、フィルム５を重ね熱圧着により接着している。なお、接着は、後記する真空引きの際の排気のために、フィルム溶着部５ａの一部を除いて行っている。   Next, as shown in FIG. 2B, a box-shaped film 5 is prepared. In the film 5, the opening 1 a extends from the internal cross section, and the edge of the film 5 forms the film weld portion 5 a over the entire circumference. And the film 5 is put into the inner side of the outer box 2 which already contains the core mat 6 from the opening 1a of the outer box 2. As shown in FIG. 3C, the portions of the film 5 are arranged so as to face each other along the corresponding portions of the core mat 6. The film 5 includes a nylon film (thickness 15 μm), an aluminum-deposited polyethylene terephthalate film (thickness 12 μm), an aluminum-deposited vinyl alcohol copolymer film (thickness 30 μm), and a polypropylene film (thickness 50 μm). The one laminated by the dry lamination method is used. The film 5 is originally sheet-like, but is cut into a box-shaped development view. Then, the corresponding edges of the cut film 5 are overlapped and thermally welded to produce a box-shaped film 5. The film welding part 5a of the outer box 2 and the film 5 forms a base layer on the bonding surface of the outer box 2 in advance, and then the film 5 is laminated and bonded by thermocompression bonding. Note that the bonding is performed except for a part of the film welded portion 5a for the purpose of evacuation during the vacuuming described later.

フィルム５として積層されているアルミ蒸着ポリエチレンテレフタレートフィルムと、アルミ蒸着ビニルアルコール共重合体フィルムには、アルミニウムが蒸着され、アルミニウム蒸着層が積層されている。これにより、フィルム５には、複数層のアルミニウム蒸着層が積層されている。アルミニウム蒸着層に限らず、金属蒸着膜は、高いガスバリア性を有している。このため、フィルム５に、アルミニウム蒸着層に限らず、金属蒸着膜を積層することで、ガスバリア性が高くガスの透過を抑制し経時劣化が少なく信頼性の高いフィルム５を得ることができる。   Aluminum is vapor-deposited on the aluminum vapor-deposited polyethylene terephthalate film and the aluminum vapor-deposited vinyl alcohol copolymer film laminated as the film 5, and an aluminum vapor-deposited layer is laminated. Thereby, a plurality of aluminum vapor deposition layers are laminated on the film 5. Not only an aluminum vapor deposition layer but a metal vapor deposition film has a high gas barrier property. For this reason, not only an aluminum vapor deposition layer but a metal vapor deposition film is laminated on the film 5, whereby a highly reliable film 5 having high gas barrier properties and suppressing gas permeation with little deterioration over time can be obtained.

次に、外箱２とフィルム５とで区切られ、コアマット６が収められた空間を真空引きする。真空引きは、ロータリーポンプで略１０分間粗引きし、拡散ポンプで略１０分間本引きし、その空間の圧力が絶対圧で１．５Ｐａに達するまで排気を行っている。この排気の後、一部接着していなかったフィルム溶着部５ａを外箱２に接着し、その空間を封止している。   Next, the space separated by the outer box 2 and the film 5 and containing the core mat 6 is evacuated. The vacuuming is performed roughly for 10 minutes with a rotary pump, and finally with a diffusion pump for about 10 minutes, and exhausting is performed until the pressure in the space reaches 1.5 Pa in absolute pressure. After this evacuation, the film welding part 5a, which was not partly adhered, is adhered to the outer box 2 to seal the space.

次に、図２（ａ）に示すように、開口１ａを有する内箱３を用意する。内箱３と、既にコアマット６とフィルム５が入っている外箱２は、発泡装置内に入れられて固定される。発泡装置内では、内箱３は、外箱２の開口１ａから、既にコアマット６とフィルム５が入っている外箱２の内側に入れられ、内箱３の各部分が、対応するフィルム５の各部分に沿い対向するように配置される。発泡装置は、図４に示すように、フィルム５（真空断熱材９）と内箱３で挟まれた空間に、硬質発泡ウレタン４を充填し、断熱箱体１が完成する。   Next, as shown in FIG. 2A, an inner box 3 having an opening 1a is prepared. The inner box 3 and the outer box 2 that already contains the core mat 6 and the film 5 are placed in a foaming apparatus and fixed. In the foaming apparatus, the inner box 3 is put into the inner side of the outer box 2 that already contains the core mat 6 and the film 5 from the opening 1 a of the outer box 2. It arrange | positions so that it may oppose along each part. As shown in FIG. 4, the foaming apparatus fills the space between the film 5 (vacuum heat insulating material 9) and the inner box 3 with the hard foamed urethane 4, and the heat insulating box 1 is completed.

作製した断熱箱体１の壁面（屈曲部２ｂを含まない）の熱伝導率を熱伝導率測定装置（英弘精機（株）製 ＡＵＴＯ−Λ）を用い、測定温度条件１０℃で熱伝導率を測定した。測定結果は、従来の真空断熱材と同程度の１０ｍＷ/ｍ・Ｋであった。これより、断熱箱体１における真空断熱材９（図１参照）も、従来の真空断熱材を用いた従来の断熱箱体と同程度の断熱性能を発揮していると考えられる。   The thermal conductivity of the wall surface (not including the bent portion 2b) of the manufactured heat insulation box 1 is measured using a thermal conductivity measuring device (AUTO-Λ manufactured by Eihiro Seiki Co., Ltd.) at a measurement temperature condition of 10 ° C. It was measured. The measurement result was 10 mW / m · K, which is about the same as the conventional vacuum heat insulating material. From this, it is thought that the vacuum heat insulating material 9 (refer FIG. 1) in the heat insulation box 1 is also exhibiting the heat insulation performance comparable to the conventional heat insulation box using the conventional vacuum heat insulating material.

次に、作製した断熱箱体１（屈曲部２ｂも含む）からの熱漏洩量を測定するため、断熱箱体１を−（マイナス）１０℃等の低温に設定した恒温槽内に設置し、断熱箱体１の箱内の温度を＋（プラス）５℃等の高温（一定）に保つために必要な熱量を測定した。測定結果の必要な熱量は、７０Ｗであった。従来の真空断熱材を用いた従来の断熱箱体では、必要な熱量は、８５Ｗであり、第１の実施形態の断熱箱体１の方が、略２０％少ない熱量で同一の温度に保てることが分かった。断熱箱体１の壁については、前記より、従来と同程度の断熱性能を発揮していると考えられるので、この熱漏洩量の差は、断熱箱体１の屈曲部２ｂにおける断熱性が向上したことによるものと考えられる。第１の実施形態の断熱箱体１を、保冷、保温が必要な民生機器や産業機器へ適用することで、省エネルギ化を推進することができる。   Next, in order to measure the amount of heat leakage from the produced heat insulation box 1 (including the bent portion 2b), the heat insulation box 1 is installed in a thermostat set at a low temperature such as − (minus) 10 ° C., The amount of heat necessary to keep the temperature in the box of the heat insulating box 1 at a high temperature (constant) such as + (plus) 5 ° C. was measured. The amount of heat required for the measurement result was 70 W. In the conventional heat insulation box using the conventional vacuum heat insulating material, the required amount of heat is 85 W, and the heat insulation box 1 of the first embodiment can be kept at the same temperature with about 20% less heat. I understood. About the wall of the heat insulation box 1 from the above, since it is thought that the heat insulation performance comparable to the past is exhibited, the difference in this amount of heat leakage improves the heat insulation in the bending part 2b of the heat insulation box 1 This is probably due to the fact that Energy saving can be promoted by applying the heat insulation box 1 of the first embodiment to consumer equipment and industrial equipment that need to be kept cold and warm.

（第２の実施形態）
図５に、本発明の第２の実施形態に係る断熱箱体の分解斜視図を示す。図５（ａ）は内箱３を示し、図５（ｂ）は展開したフィルム５を示し、図５（ｃ）は展開したコアマット６を示し、図５（ｄ）は展開した外箱２を示している。 (Second Embodiment)
In FIG. 5, the disassembled perspective view of the heat insulation box which concerns on the 2nd Embodiment of this invention is shown. 5 (a) shows the inner box 3, FIG. 5 (b) shows the developed film 5, FIG. 5 (c) shows the developed core mat 6, and FIG. 5 (d) shows the developed outer box 2. Show.

まず、図５（ｄ）に示すように、展開されたままの外箱２が用意される。そして、図５（ｃ）に示すように、第１の実施形態と同様に成形されたコアマット６が用意される。次に、図５（ｂ）に示すように、図５（ｄ）の外箱２と略同形状のフィルム５を用意する。   First, as shown in FIG. 5 (d), an unpacked outer box 2 is prepared. And as shown in FIG.5 (c), the core mat 6 shape | molded similarly to 1st Embodiment is prepared. Next, as shown in FIG. 5B, a film 5 having substantially the same shape as the outer box 2 of FIG. 5D is prepared.

次に、図６（ａ）に示すように、展開されたままの外箱２と、コアマット６と、フィルム５とを、重ねる。外箱２とフィルム５のフィルム溶着部５ａ（図５（ｂ）参照）は、あらかじめ、外箱２の接着面に下地層を形成した後、フィルム５を重ね熱圧着により接着している。なお、接着は、後記する真空引きの際の排気のために、フィルム溶着部５ａの一部を除いて行っている。   Next, as shown to Fig.6 (a), the outer box 2, the core mat 6, and the film 5 with which it was unfolded are piled up. The film welding part 5a (refer FIG.5 (b)) of the outer case 2 and the film 5 forms the base layer in the adhesion surface of the outer case 2 beforehand, Then, the film 5 is adhere | attached by overlapping thermocompression bonding. Note that the bonding is performed except for a part of the film welded portion 5a for the purpose of evacuation during the vacuuming described later.

次に、第１の実施形態と同様に、コアマット６が収められた空間を真空引きする。この真空引きの後、一部接着していなかったフィルム溶着部５ａを外箱２に接着し、その空間を封止している。図６（ａ）に示すように、大気圧によって、フィルム５は、コアマット６に圧接するので、切欠６ａに沿って張り付く。以上で、平坦な真空断熱材９が形成される。   Next, as in the first embodiment, the space in which the core mat 6 is housed is evacuated. After this evacuation, the film welded portion 5a that has not been partially bonded is bonded to the outer box 2 to seal the space. As shown in FIG. 6A, the film 5 is pressed against the core mat 6 by the atmospheric pressure, and thus sticks along the notch 6a. Thus, the flat vacuum heat insulating material 9 is formed.

次に、図６（ｂ）に示すように、真空断熱材９を、屈曲部２ｂで折り曲げ、箱形状にする。切欠６ａでは、フィルム５が折り重なるので、大きなボリュームを要せず、コアマット６が過度に圧迫されることはない。   Next, as shown in FIG.6 (b), the vacuum heat insulating material 9 is bent by the bending part 2b, and is made into a box shape. Since the film 5 is folded at the notch 6a, a large volume is not required and the core mat 6 is not excessively pressed.

最後は、第１の実施形態と同様に、内箱３を用意し、外箱２と共に、発泡装置内に入れて固定する。発泡装置は、図６（ｂ）に示すように、フィルム５（真空断熱材９）と内箱３で挟まれた空間に、硬質発泡ウレタン４を充填し、断熱箱体１が完成する。第２の実施形態の断熱箱体１によっても、第１の実施形態の断熱箱体１と同様の断熱性能を発揮することができる。   Finally, as in the first embodiment, the inner box 3 is prepared, and together with the outer box 2, it is placed in a foaming apparatus and fixed. As shown in FIG. 6 (b), the foaming apparatus fills the space between the film 5 (vacuum heat insulating material 9) and the inner box 3 with the hard foamed urethane 4 to complete the heat insulating box 1. Also by the heat insulation box 1 of 2nd Embodiment, the heat insulation performance similar to the heat insulation box 1 of 1st Embodiment can be exhibited.

（第３の実施形態）
図７に、本発明の第３の実施形態に係る断熱箱体１の一部分（屈曲部２ｂの周辺）の断面図を示す。第３の実施形態が、第１と第２の実施形態と異なる点は、外箱２に、複数の屈曲部２ｂを互いに近接させて設けている点である。これによれば、複数の屈曲部２ｂで、多段階に外箱２を曲げることになり、１つの屈曲部２ｂにおける曲げ角度を小さくすることができる。そして、切欠６ａがなくても、屈曲部２ｂにおける曲げによるコアマット６のつぶれを抑制することができる。屈曲部２ｂにおいても断熱性に優れる断熱箱体１を得ることができる。なお、切欠６ａと併用してもよいのはもちろんである。また、第３の実施形態において、第１の実施形態のように外箱２の箱形状の形成が真空断熱材９の形成より先でも、第２の実施形態のように外箱２の箱形状の形成が真空断熱材９の形成より後でも、かまわない。 (Third embodiment)
FIG. 7 shows a cross-sectional view of a part of the heat insulation box 1 according to the third embodiment of the present invention (around the bent portion 2b). The third embodiment is different from the first and second embodiments in that a plurality of bent portions 2b are provided close to each other in the outer box 2. According to this, the outer box 2 is bent in multiple stages by the plurality of bent portions 2b, and the bending angle at one bent portion 2b can be reduced. And even if there is no notch 6a, the collapse of the core mat 6 by the bending in the bending part 2b can be suppressed. Also in the bending part 2b, the heat insulation box 1 which is excellent in heat insulation can be obtained. Of course, it may be used together with the notch 6a. Moreover, in 3rd Embodiment, even if formation of the box shape of the outer box 2 is ahead of formation of the vacuum heat insulating material 9 like 1st Embodiment, the box shape of the outer box 2 like 2nd Embodiment is demonstrated. Even after the formation of the vacuum heat insulating material 9, it does not matter.

（第４の実施形態）
図８に、本発明の第４の実施形態に係る断熱箱体１の一部分（屈曲部２ｂの周辺）の断面図を示す。第４の実施形態が、第１と第２と第３の実施形態と異なる点は、外箱２の内周面の屈曲部２ｂにおける曲率半径Ｒが、コアマット６の厚さＴより大きい点である（Ｒ＞Ｔ）。これによっても、切欠６ａがなくても、屈曲部２ｂにおける曲げによるコアマット６のつぶれを抑制することができる。そして、屈曲部２ｂにおいても断熱性に優れる断熱箱体１を得ることができる。なお、切欠６ａと併用してもよいのはもちろんである。また、第４の実施形態において、第１の実施形態のように外箱２の箱形状の形成が真空断熱材９の形成より先でも、第２の実施形態のように外箱２の箱形状の形成が真空断熱材９の形成より後でも、かまわない。 (Fourth embodiment)
FIG. 8 shows a cross-sectional view of a part of the heat insulation box 1 according to the fourth embodiment of the present invention (around the bent portion 2b). The fourth embodiment is different from the first, second and third embodiments in that the radius of curvature R at the bent portion 2b of the inner peripheral surface of the outer box 2 is larger than the thickness T of the core mat 6. Yes (R> T). Also by this, even if there is no notch 6a, the collapse of the core mat 6 due to bending at the bent portion 2b can be suppressed. And the heat insulation box 1 which is excellent in heat insulation also in the bending part 2b can be obtained. Of course, it may be used together with the notch 6a. Moreover, in 4th Embodiment, even if formation of the box shape of the outer box 2 is ahead of formation of the vacuum heat insulating material 9 like 1st Embodiment, the box shape of the outer box 2 like 2nd Embodiment is demonstrated. Even after the formation of the vacuum heat insulating material 9, it does not matter.

（第５の実施形態）
図９に、本発明の第５の実施形態に係る冷蔵庫（冷凍庫を含む）１１の正面図を示す。冷蔵庫（冷凍庫を含む）１１には、下段に冷蔵庫（室）が設けられ、上段に冷凍庫（室）が設けられている。冷蔵庫（冷凍庫を含む）１１には、冷蔵庫用（下段）と冷凍庫用（上段）にそれぞれ、断熱箱体１と扉１１ｂが設けられている。それぞれの断熱箱体１の開口１ａは、正面方向に開いている。冷蔵庫（冷凍庫を含む）１１の冷蔵庫用（下段）と冷凍庫用（上段）それぞれの断熱箱体１に、第１〜第４の実施形態に記載の断熱箱体１を用いることで、断熱性に優れた冷凍冷蔵庫を提供できる。一度、庫内を冷却すれば、その冷気を長期にわたって保持可能となるこのことから、冷却用のコンプレッサーで使用する電気量が少なくなり、省エネルギな冷凍冷蔵庫を提供できる。 (Fifth embodiment)
FIG. 9 shows a front view of a refrigerator (including a freezer) 11 according to the fifth embodiment of the present invention. The refrigerator (including the freezer) 11 is provided with a refrigerator (room) at the lower stage and a freezer (room) at the upper stage. The refrigerator (including the freezer) 11 is provided with a heat insulating box 1 and a door 11b for the refrigerator (lower stage) and the freezer (upper stage), respectively. The opening 1a of each heat insulation box 1 is open in the front direction. By using the heat insulation box 1 described in the first to fourth embodiments for each of the heat insulation boxes 1 for the refrigerator (including the freezer) 11 for the refrigerator (lower stage) and for the freezer (upper stage), the heat insulation is achieved. An excellent refrigerator-freezer can be provided. Once the inside of the refrigerator is cooled, the cold air can be maintained for a long time. Therefore, the amount of electricity used in the cooling compressor is reduced, and an energy-saving refrigerator-freezer can be provided.

（第６の実施形態）
図１０に、本発明の第６の実施形態に係る貯湯式給湯器１２の斜視図を示す。貯湯式給湯器１２には、蛇口１２ａの上方に、断熱箱体１が設けられている。断熱箱体１の開口１ａは、下方向に開き、断熱箱体１内に収められるタンクの加熱を可能にしている。貯湯式給湯器１２の断熱箱体１に、第１〜第４の実施形態に記載の断熱箱体１を用いることで、断熱性に優れた貯湯式給湯器１２を提供できる。沸かしたお湯が温度を保ったまま貯蔵できることから、お湯の沸かし直しが少なくなり、省エネルギな貯湯式給湯器を提供できる。 (Sixth embodiment)
In FIG. 10, the perspective view of the hot water storage type water heater 12 which concerns on the 6th Embodiment of this invention is shown. The hot water storage water heater 12 is provided with a heat insulating box 1 above the faucet 12a. The opening 1a of the heat insulating box 1 opens downward and enables heating of the tank housed in the heat insulating box 1. By using the heat insulation box 1 described in the first to fourth embodiments for the heat insulation box 1 of the hot water storage water heater 12, the hot water storage water heater 12 having excellent heat insulation can be provided. Since boiled hot water can be stored while maintaining the temperature, reheating of hot water is reduced, and an energy-saving hot water storage type hot water heater can be provided.

このように、本発明の断熱箱体１は、保温や保冷が必要な各製品に、適用することが可能であり、たとえば、車両、建築部材、搬送用機器、医療機器等における保温や保冷が必要な各製品にも適用することができる。特に、熱交換部を含み断熱性が必要な機器全般に有効である。   As described above, the heat insulating box 1 of the present invention can be applied to each product that needs to be kept warm and cool. For example, heat insulation and cool keeping in a vehicle, a building member, a transport device, a medical device, and the like can be performed. It can also be applied to each required product. In particular, it is effective for all devices including a heat exchanging part and requiring heat insulation.

１ 断熱箱体
１ａ 開口
２ 外箱（鋼板）
２ａ 外箱の内周面
２ｂ 屈曲部
３ 内箱
４ 硬質発泡ウレタン（発泡断熱材）
５ フィルム（フィルム積層体；外箱の一部とも見なせる）
５ａ フィルム溶着部
６ コアマット（グラスウール製マット；外箱の一部とも見なせる）
６ａ 切欠
７ ゲッター剤
８ ガスバリア容器（外箱の一部とも見なせる）
９ 真空断熱材
１１ 冷蔵庫（冷凍庫を含む）
１２ 貯湯式給湯器
Ｒ 曲率半径
Ｔ コアマットの厚さ 1 Heat insulation box 1a Opening 2 Outer box (steel plate)
2a Inner peripheral surface of outer box 2b Bent part 3 Inner box 4 Hard foam urethane (foam insulation)
5 Film (film laminate; can be considered part of the outer box)
5a Film weld 6 Core mat (glass wool mat; can be considered part of the outer box)
6a Notch 7 Getter agent 8 Gas barrier container (can be considered part of the outer box)
9 Vacuum insulation 11 Refrigerator (including freezer)
12 Hot water storage water heater R Curvature radius T Thickness of core mat

Claims (9)

外箱と内箱の間に発泡断熱材を充填した断熱箱体において、
前記外箱の辺を成す屈曲部の内箱側に設けられたフィルムとコアマットを有し、
前記外箱と前記フィルムとで、前記コアマットを収納するガスバリア容器を構成し、
前記ガスバリア容器内は、密封され減圧状態になっていることを特徴とする断熱箱体。 In the heat insulation box filled with foam insulation between the outer box and the inner box,
Having a film and a core mat provided on the inner box side of the bent portion forming the side of the outer box;
The outer box and the film constitute a gas barrier container that houses the core mat,
The inside of the gas barrier container is sealed and is in a reduced pressure state. 前記フィルムは、金属蒸着膜を含む積層構造を有していることを特徴とする請求項１に記載の断熱箱体。   The heat insulation box according to claim 1, wherein the film has a laminated structure including a metal vapor deposition film. 外箱と内箱の間に発泡断熱材を充填した断熱箱体において、
前記外箱は、その辺を成す屈曲部で、コアマットを収納して密封され減圧状態になっているガスバリア容器になっていることを特徴とする断熱箱体。 In the heat insulation box filled with foam insulation between the outer box and the inner box,
The outer box is a gas barrier container which is a gas barrier container which is sealed and contains a core mat at a bent portion which forms a side of the outer box. 前記コアマットは、前記外箱の屈曲部に沿って切欠を有することを特徴とする請求項１乃至請求項３のいずれか１項に記載の断熱箱体。   The said core mat has a notch along the bending part of the said outer case, The heat insulation box of any one of Claim 1 thru | or 3 characterized by the above-mentioned. 前記外箱に、複数の屈曲部を互いに近接させて設けたことを特徴とする請求項１乃至請求項４のいずれか１項に記載の断熱箱体。   The heat insulation box according to any one of claims 1 to 4, wherein a plurality of bent portions are provided close to each other on the outer box. 前記外箱の内周面の屈曲部における曲率半径は、前記コアマットの厚さより大きいことを特徴とする請求項１乃至請求項５のいずれか１項に記載の断熱箱体。   The heat insulating box according to any one of claims 1 to 5, wherein a radius of curvature at a bent portion of an inner peripheral surface of the outer box is larger than a thickness of the core mat. 前記外箱は、屈曲部において互いに連結した複数の内周面を有し、
前記コアマットは、複数の前記内周面にわたって連続的に、複数の前記内周面に圧接していることを特徴とする請求項１乃至請求項６のいずれか１項に記載の断熱箱体。 The outer box has a plurality of inner peripheral surfaces connected to each other at the bent portion,
The heat insulation box according to any one of claims 1 to 6, wherein the core mat is continuously in pressure contact with the plurality of inner peripheral surfaces over the plurality of inner peripheral surfaces. 請求項１乃至請求項７のいずれか１項に記載の断熱箱体を搭載したことを特徴とする冷蔵庫。   A refrigerator equipped with the heat insulation box according to any one of claims 1 to 7. 請求項１乃至請求項７のいずれか１項に記載の断熱箱体を搭載したことを特徴とする貯湯式給湯器。   A hot water storage type hot water heater comprising the heat insulating box according to any one of claims 1 to 7.
JP2011229331A 2011-10-19 2011-10-19 Thermal insulation box, refrigerator, and storage type water heater Abandoned JP2013088036A (en)

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