JP2018169097A - Vacuum heat insulation housing and refrigerator - Google Patents

Vacuum heat insulation housing and refrigerator Download PDF

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Publication number
JP2018169097A
JP2018169097A JP2017066970A JP2017066970A JP2018169097A JP 2018169097 A JP2018169097 A JP 2018169097A JP 2017066970 A JP2017066970 A JP 2017066970A JP 2017066970 A JP2017066970 A JP 2017066970A JP 2018169097 A JP2018169097 A JP 2018169097A
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vacuum heat
vacuum
heat insulating
heat insulation
inner plate
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智章 北野
Tomoaki Kitano
智章 北野
平野　俊明
Toshiaki Hirano
俊明 平野
秀司 河原崎
Hideji Kawarasaki
秀司 河原崎
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Priority to JP2017066970A priority Critical patent/JP2018169097A/en
Priority to CN201880021971.0A priority patent/CN110494706B/en
Priority to PCT/JP2018/012673 priority patent/WO2018181440A1/en
Publication of JP2018169097A publication Critical patent/JP2018169097A/en
Priority to JP2021133090A priority patent/JP7182040B2/en
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Abstract

To provide a vacuum heat insulation housing (door body) having both of heat insulation performance and rigidity improvement such as warp deformation caused by difference in temperatures inside and outside a door.SOLUTION: A vacuum heat insulation housing includes an outer plate 3a, an inner plate 3c, and a vacuum heat insulation body 3b disposed inside the outer plate 3a and the inner plate 3c. The vacuum heat insulation body 3d is provided with a core material 3bc and a reinforcing member 3bca in its inner part and is structured so that the inner part is vacuum-sealed with a seal member 3ba and a base member 3bd to enhance the heat insulation performance, and the reinforcing member 3bca is disposed within vacuum sealing to improve flexural rigidity, so that warp deformation caused by thermal shrinkage due to difference in environmental temperature at the inner and outer surfaces of a refrigeration chamber door 3 can be suppressed.SELECTED DRAWING: Figure 8

Description

本発明は、冷蔵庫などに用いる真空断熱筐体に関するものである。   The present invention relates to a vacuum heat insulating housing used for a refrigerator or the like.

近年、地球環境問題である温暖化の対策として省エネルギー化を推進する動きが活発化し、断熱技術の性能進化が期待されている。従来、この種の断熱技術は、図１６と図１７に示されているように、扉枠体３０の内部の空間に設けられた真空断熱パネル３４と、扉枠体３０側面に接して設けられた補強部材３５を有した構造とすることで断熱性能を向上させた技術が提案されている。なお、真空断熱パネル３４とは、板形状の容器内を真空にすることで断熱性能を向上させた構造のことをいう（例えば、特許文献１参照）。   In recent years, the movement to promote energy saving as a countermeasure for global warming, which is a global environmental problem, has been activated, and the performance of thermal insulation technology is expected to evolve. Conventionally, as shown in FIGS. 16 and 17, this type of heat insulation technology is provided in contact with the vacuum heat insulation panel 34 provided in the space inside the door frame 30 and the side surface of the door frame 30. Further, a technique has been proposed in which the heat insulation performance is improved by using the structure having the reinforcing member 35. In addition, the vacuum heat insulation panel 34 means the structure which improved the heat insulation performance by making the inside of a plate-shaped container into a vacuum (for example, refer patent document 1).

特開２０１３−１１９９６６号公報JP 2013-119966 A

しかしながら、上記従来の構成では、扉枠体３０は、内部の空間に真空断熱パネル３４と扉枠体３０の側面に接して設けられた補強部材３５を有した構造であり、補強部材３５の近傍の断熱性は、真空断熱パネル３４と独立した構成にしているため、断熱性能の悪化と冷蔵庫内外温度差による扉枠体３０にそりが発生するという課題があった。   However, in the above-described conventional configuration, the door frame 30 has a structure including the vacuum heat insulating panel 34 and the reinforcing member 35 provided in contact with the side surface of the door frame 30 in the internal space, and in the vicinity of the reinforcing member 35. Since the heat insulation has a configuration independent of the vacuum heat insulation panel 34, there is a problem that the heat insulation performance is deteriorated and the door frame 30 is warped due to a temperature difference between the inside and outside of the refrigerator.

本発明は、上記従来の課題を解決するもので、断熱性能と、扉内外温度差により生じるそり変形などの剛性の向上も両立できる真空断熱筐体（扉体）を提供することを目的とする。   This invention solves the said conventional subject, and aims at providing the vacuum insulation housing | casing (door body) which can improve heat insulation performance and rigidity improvement, such as a sleigh deformation | transformation produced by the temperature difference inside and outside a door. .

上記従来の課題を解決するために、本発明の真空断熱筐体は、外板と、内板と、前記外板と前記内板の内部に配置された真空断熱体とを備えたもので、前記真空断熱体は、内部に芯材と補強部材とを備え、シール部材とベース部材とで内部を真空密閉した構造としたものである。   In order to solve the above-described conventional problems, the vacuum heat insulating housing of the present invention includes an outer plate, an inner plate, and a vacuum heat insulating body disposed inside the outer plate and the inner plate. The vacuum insulator has a structure in which a core member and a reinforcing member are provided inside, and the inside is vacuum-sealed with a seal member and a base member.

これによって、断熱性能を高めながら、芯材と補強部材とを内部に備えた真空断熱体により、真空断熱筐体（扉体）の内外面に温度差が生じても、真空断熱筐体（扉体）のそり変形を抑制することができる。   Even if a temperature difference arises in the inside and outside of the vacuum heat insulation housing (door body) by the vacuum heat insulation body with the core material and the reinforcing member inside while improving the heat insulation performance, the vacuum heat insulation housing (door) Warping deformation of the body) can be suppressed.

本発明の真空断熱筐体（扉体）は、断熱性能を高めながら、真空断熱筐体（扉体）の内外面に温度差が生じても、真空断熱筐体（扉体）のそり変形を抑制することができるので、簡単な構成で、そり変形を長期間保証し、断熱性能も高めた真空断熱筐体を提供することができる。   The vacuum heat insulation housing (door body) of the present invention improves the heat insulation performance, and even if a temperature difference occurs between the inner and outer surfaces of the vacuum heat insulation housing (door body), the vacuum heat insulation housing (door body) is warped and deformed. Since it can be suppressed, it is possible to provide a vacuum heat insulating casing with a simple configuration that guarantees warping deformation for a long period of time and has improved heat insulating performance.

本発明の実施の形態１における真空断熱筐体を備えた冷蔵庫の斜視図The perspective view of the refrigerator provided with the vacuum heat insulation housing | casing in Embodiment 1 of this invention. 本発明の実施の形態１における真空断熱筐体を備えた冷蔵室扉の斜視図The perspective view of the refrigerator compartment door provided with the vacuum heat insulation housing | casing in Embodiment 1 of this invention. 本発明の実施の形態１における真空断熱筐体を備えた冷蔵室扉の断面図Sectional drawing of the refrigerator compartment door provided with the vacuum heat insulation housing | casing in Embodiment 1 of this invention. 本発明の実施の形態１における図３のＡ部拡大断面図Section A enlarged sectional view of FIG. 3 in Embodiment 1 of the present invention 本発明の実施の形態１における冷蔵室扉の部品展開図Exploded view of parts of refrigerator compartment door according to Embodiment 1 of the present invention 本発明の実施の形態１における図５のＢ部拡大断面図Section B enlarged sectional view of FIG. 5 in Embodiment 1 of the present invention 本発明の実施の形態１における真空断熱体の断面図Sectional drawing of the vacuum heat insulating body in Embodiment 1 of this invention 本発明の実施の形態１における図７のＣ部拡大断面図Section C enlarged sectional view of FIG. 7 in Embodiment 1 of the present invention 本発明の実施の形態１における真空断熱体の部品展開図Exploded view of parts of vacuum insulator in embodiment 1 of the present invention 本発明の実施の形態１における図９のＤ部拡大断面図Section D enlarged sectional view of FIG. 9 in Embodiment 1 of the present invention 本発明の実施の形態１における真空断熱筐体の芯材と補強部材の斜視図The perspective view of the core material and reinforcement member of the vacuum heat insulation housing | casing in Embodiment 1 of this invention 本発明の実施の形態２における真空断熱筐体の芯材と吸着部材の斜視図The perspective view of the core material and adsorption member of the vacuum heat insulation housing | casing in Embodiment 2 of this invention 本発明の実施の形態２における真空断熱筐体の芯材に配置された吸着部材の環境温度と吸着速度の関係図The relationship diagram of the environmental temperature and adsorption speed of the adsorption member arrange | positioned at the core material of the vacuum heat insulation housing | casing in Embodiment 2 of this invention 本発明の実施の形態３における真空断熱筐体の芯材の発泡成形型図Foaming mold diagram of core material of vacuum heat insulating casing in Embodiment 3 of the present invention 本発明の実施の形態３における真空断熱筐体の芯材の発泡成形型分解図Foaming mold exploded view of the core material of the vacuum heat insulating casing in Embodiment 3 of the present invention 従来の真空断熱筐体の部品展開図Exploded view of conventional vacuum insulation housing parts 従来の真空断熱筐体の断面図Sectional view of a conventional vacuum insulation housing

第１の発明は、外板と、内板と、前記外板と前記内板の内部に配置された真空断熱体とを備えたもので、前記真空断熱体は、内部に芯材と補強部材とを備え、シール部材とベース部材とで内部を真空密閉した構造としたことにより、断熱性能が高まるとともに、補強部材が真空密閉内に配置することで曲げ剛性が向上し、真空断熱筐体の内外面の環境温度の違いによる熱収縮で発生するそり変形を抑制することができる。   The first invention includes an outer plate, an inner plate, and a vacuum heat insulator disposed inside the outer plate and the inner plate, and the vacuum heat insulator includes a core material and a reinforcing member therein. And having a structure in which the inside of the seal member and the base member is vacuum-sealed, the heat insulation performance is enhanced, and the bending rigidity is improved by arranging the reinforcing member in the vacuum seal, thereby It is possible to suppress warpage deformation caused by thermal shrinkage due to the difference in environmental temperature between the inner and outer surfaces.

第２の発明は、第１の発明において、前記芯材と前記補強部材とが一体構成されたことにより、補強部材は、芯材の連続気泡ウレタンフォームとを一体で成形されることで曲げ剛性が向上するので、真空断熱筐体の内外面の環境温度の違いによる熱収縮で発生するそり変形をさらに抑制することができる。   According to a second invention, in the first invention, since the core material and the reinforcing member are integrally formed, the reinforcing member is integrally formed with the open-cell urethane foam of the core material, thereby bending rigidity. Therefore, warpage deformation caused by thermal contraction due to a difference in environmental temperature between the inner and outer surfaces of the vacuum heat insulating casing can be further suppressed.

第３の発明は、第１または第２の発明において、前記補強部材は、前記芯材よりも熱収縮による変化の少ない材料を用いたことにより、補強部材は、芯材の連続気泡ウレタンフォームよりも熱収縮による変化の少ない材料なので、真空断熱筐体の内外面の環境温度の違いによる熱収縮で発生するそり変形を確実に抑制することができる。   According to a third invention, in the first or second invention, the reinforcing member is made of a material that is less changed by thermal contraction than the core material. Since this is a material that hardly changes due to heat shrinkage, warping deformation caused by heat shrinkage due to a difference in environmental temperature between the inner and outer surfaces of the vacuum heat insulating housing can be reliably suppressed.

第４の発明は、外板と、内板と、前記外板と前記内板の内部に配置された真空断熱体とを備えたもので、前記真空断熱体は、内部に芯材を備え、シール部材とベース部材とで内部を真空密閉した構造としたもので、前記内板は庫内部の肉厚より外周部の肉厚を大きくしたことにより、真空断熱筐体の内外面の環境温度の違いによる熱収縮で発生するそり変形を内板の肉厚設定により抑制することができる。   The fourth invention comprises an outer plate, an inner plate, and a vacuum heat insulator disposed inside the outer plate and the inner plate, and the vacuum heat insulator includes a core inside, The inner plate has a vacuum-sealed structure with a seal member and a base member, and the inner plate has a larger outer peripheral wall thickness than the inner wall thickness, so that the environmental temperature of the inner and outer surfaces of the vacuum heat insulating housing can be reduced. Warp deformation caused by thermal contraction due to the difference can be suppressed by setting the thickness of the inner plate.

第５の発明は、第１から第４のいずれかの発明において、前記ベース部材は、熱可塑性樹脂を異材質で積層して形成されたことにより、真空成形などで自由な形状に形成することができ、真空封止後の外部からの水や空気などのガスの浸入を防止でき真空度を保てるので、断熱性能も長期に保つことができる。   According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the base member is formed in a free shape by vacuum forming or the like by being formed by laminating thermoplastic resins with different materials. It is possible to prevent the intrusion of gas such as water and air from the outside after vacuum sealing, and the degree of vacuum can be maintained, so that the heat insulation performance can be maintained for a long time.

第６の発明は、第１から第５のいずれかの発明において、前記シール部材は、アルミ箔の両面を樹脂フィルムでラミネートして積層されたことにより、真空封止後の外部からの水や空気などのガスの浸入を防止でき真空度を保てるので、断熱性能も長期に保つことができる。   According to a sixth invention, in any one of the first to fifth inventions, the sealing member is laminated by laminating both surfaces of an aluminum foil with a resin film. Since the invasion of gas such as air can be prevented and the degree of vacuum can be maintained, the heat insulation performance can be maintained for a long time.

第７の発明は、第１から第６のいずれかの発明において、前記真空断熱体の内部に吸着部材を備えたことにより、真空封止後に内部からの発生や、或いは外部から浸入した水や
空気などのガスを吸着し、真空度を悪化させないので、断熱性能も長期に保つことができる。 According to a seventh invention, in any one of the first to sixth inventions, an adsorption member is provided inside the vacuum heat insulator, so that generation from the inside after vacuum sealing or water entering from the outside Since gas such as air is adsorbed and the degree of vacuum is not deteriorated, heat insulation performance can be maintained for a long time.

第８の発明は、第１から第７のいずれかに記載の真空断熱筐体を備えた冷蔵庫であり、断熱性能と外観変形を抑制した信頼性の高い冷蔵庫を提供することができる。   8th invention is a refrigerator provided with the vacuum heat insulation housing | casing in any one of 1st to 7th, and can provide the reliable refrigerator which suppressed heat insulation performance and external appearance deformation.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、全ての図面において、同一又は相当部分には同一符合を付し、重複する説明は省略する場合がある。また、全ての図面おいて、本発明を説明するための構成要素を抜粋して図示しており、その他の構成要素については図示を省略する場合がある。さらに、以下の実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same or corresponding parts are denoted by the same reference numerals, and redundant description may be omitted. Further, in all the drawings, components for explaining the present invention are extracted and illustrated, and the other components may be omitted from illustration. Furthermore, the present invention is not limited to the following embodiments.

（実施の形態１）
図１は本発明の実施の形態１における真空断熱筐体を備えた冷蔵庫の斜視図、図２は本発明の実施の形態１における真空断熱筐体を備えた冷蔵室扉の斜視図、図３は本発明の実施の形態１における真空断熱筐体を備えた冷蔵室扉の断面図、図４は図３のＡ部拡大断面図、図５は本発明の実施の形態１における冷蔵室扉の部品展開図、図６は図５のＢ部拡大断面図、図７は本発明の実施の形態１における真空断熱体の断面図、図８は図７のＣ部拡大断面図、図９は本発明の実施の形態１における真空断熱筐体の部品展開図、図１０は図９のＤ部拡大断面図、図１１は本発明の実施の形態１における真空断熱筐体の芯材と補強部材の斜視図である。 (Embodiment 1)
1 is a perspective view of a refrigerator provided with a vacuum heat insulating casing in Embodiment 1 of the present invention, FIG. 2 is a perspective view of a refrigerator compartment door including a vacuum insulating casing in Embodiment 1 of the present invention, FIG. FIG. 4 is a sectional view of the refrigerator compartment door provided with the vacuum heat insulating casing in Embodiment 1 of the present invention, FIG. 4 is an enlarged sectional view of part A of FIG. 3, and FIG. FIG. 6 is an enlarged cross-sectional view of part B of FIG. 5, FIG. 7 is a cross-sectional view of the vacuum heat insulator in Embodiment 1 of the present invention, FIG. 8 is an enlarged cross-sectional view of part C of FIG. FIG. 10 is an enlarged sectional view of a part D in FIG. 9 and FIG. 11 is a view of the core material and the reinforcing member of the vacuum heat insulating casing according to the first embodiment of the present invention. It is a perspective view.

図１において、冷蔵庫１は、外観を形成する冷蔵庫本体２と、冷蔵室扉３と、製氷室扉４と、野菜室扉５と、冷凍室扉６から配置した構成としている。図２において冷蔵室扉３は、外板３ａと、内板３ｃを配置した構成としている。   In FIG. 1, the refrigerator 1 has a configuration in which a refrigerator main body 2, a refrigerator compartment door 3, an ice making compartment door 4, a vegetable compartment door 5, and a freezer compartment door 6 forming an appearance are arranged. In FIG. 2, the refrigerator compartment door 3 has a configuration in which an outer plate 3a and an inner plate 3c are arranged.

次に、冷蔵室扉３の構成について説明する。図３から図５において、冷蔵室扉３は、外板３ａと、内板３ｃと、外板３ａと内板３ｃの内部に配置された真空断熱体３ｂとを備えている。そして、冷蔵室扉３の周縁には、冷蔵庫１の庫内と庫外とをシールするガスケット３ｄを備えている。   Next, the configuration of the refrigerator compartment door 3 will be described. 3-5, the refrigerator compartment door 3 is provided with the outer plate 3a, the inner plate 3c, and the vacuum heat insulator 3b arrange | positioned inside the outer plate 3a and the inner plate 3c. The periphery of the refrigerator compartment door 3 is provided with a gasket 3d that seals the inside and outside of the refrigerator 1.

また、図６に示すように、冷蔵室扉３の内板３ｃは、内板庫内部１５と、冷蔵室扉３の側部を構成する内板外周部１４とをインジェクション成形で一体に構成されている。   Moreover, as shown in FIG. 6, the inner plate 3c of the refrigerator compartment door 3 is integrally formed by injection molding of an inner plate cabinet interior 15 and an inner plate outer peripheral portion 14 constituting the side portion of the refrigerator compartment door 3. ing.

内板３ｃは、冷蔵室内側となる庫内部の肉厚Ｔ１より冷蔵室外側となる外周部の肉厚Ｔ２を大きくした偏肉構成としている。具体的には、ガスケット３ｄのアンカー部１２を固定するための凹部１３を境に、内板３ｃの庫内側の内板庫内部１５の肉厚Ｔ１より冷蔵室外側となる内板外周部１４の肉厚Ｔ２を大きくしている。   The inner plate 3c has an uneven thickness structure in which the thickness T2 of the outer peripheral portion which is the outside of the refrigerator compartment is larger than the thickness T1 of the inside of the refrigerator which is the refrigerator compartment side. Specifically, the inner plate outer peripheral portion 14 which is outside the refrigerator compartment from the thickness T1 of the inner plate interior 15 inside the inner plate 3c inside the inner plate 3c with the recess 13 for fixing the anchor portion 12 of the gasket 3d as a boundary. The wall thickness T2 is increased.

図７、８に示すように、真空断熱筐体である冷蔵室扉３の真空断熱体３ｂは、内部に芯材３ｂｃと補強部材３ｂｃａとを備え、シール部材３ｂａとベース部材３ｂｄとで内部を真空密閉した構造としている。   As shown in FIGS. 7 and 8, the vacuum heat insulating body 3b of the refrigerator compartment door 3, which is a vacuum heat insulating casing, includes a core member 3bc and a reinforcing member 3bca inside, and the inside is formed by the seal member 3ba and the base member 3bd. It has a vacuum sealed structure.

そして、芯材３ｂｃと補強部材３ｂｃａとは一体に構成されている。具体的には、真空断熱体３ｂ内に配置されている補強部材３ｂｃａは、芯材３ｂｃである連続気泡ウレタンを発泡金型内で発泡成形する時に予め発泡金型内に補強部材３ｂｃａをセットし、連続気泡ウレタンと一体で構成されたものである。   The core material 3bc and the reinforcing member 3bca are integrally formed. Specifically, the reinforcing member 3bca arranged in the vacuum heat insulating body 3b is set in advance in the foaming mold when the open cell urethane as the core material 3bc is foam-molded in the foaming mold. It is constructed integrally with open cell urethane.

図９から図１１に示すように、真空断熱体３ｂの芯材３ｂｃは、一体発泡成形された補強部材３ｂｃａと、吸着部材３ｂｂを配置し、芯材３ｂｃの一部分に吸着部材凹部３ｂｃ
ｂと、補強部材位置きめピン跡を設けた構成としている。具体的には、補強部材３ｂｃａは、芯材３ｂｃの長手方向に、内板３ｃ側である庫内側の左右に一対で配置されている。そして、補強部材３ｂｃａは、芯材３ｂｃの庫内側の平面部から凸部１０に沿った曲面状に形成されている。また、補強部材３ｂｃａの短手方向の端部には、フランジ部１１を折り曲げて形成されていて、フランジ部１１が芯材３ｂｃの内部に食い込むように延出して配置されている。 As shown in FIGS. 9 to 11, the core material 3bc of the vacuum heat insulating body 3b includes an integrally foamed reinforcing member 3bca and an adsorbing member 3bb, and an adsorbing member recess 3bc in a part of the core material 3bc.
b and a reinforcing member position pin mark are provided. Specifically, the reinforcing members 3bca are arranged in pairs in the longitudinal direction of the core member 3bc on the left and right sides of the inner side on the inner plate 3c side. And the reinforcement member 3bca is formed in the curved surface shape along the convex part 10 from the plane part inside the store | warehouse | chamber of the core material 3bc. Further, the flange portion 11 is formed by bending the end portion in the short direction of the reinforcing member 3bca, and the flange portion 11 is arranged so as to extend into the core material 3bc.

また、真空断熱体３ｂ内の芯材３ｂｃには、吸着部材３ｂｂを収納するための吸着部材凹部３ｂｃｂが複数箇所、外板３ａ側に形成されている。吸着部材凹部３ｂｃｂは吸着部材３ｂｂを真空断熱体３ｂの真空封止組立作業時に位置決め、数量管理するために設けられている。   The core member 3bc in the vacuum heat insulating body 3b is formed with a plurality of suction member recesses 3bcb for housing the suction member 3bb on the outer plate 3a side. The suction member recess 3bcb is provided for positioning and quantity control of the suction member 3bb during the vacuum sealing assembly operation of the vacuum heat insulating body 3b.

また、芯材３ｂｃの発泡成形時に、補強部材３ｂｃａをウレタン発泡金型にセットする時の位置決めを分かり易くするために、補強部材位置決めピン跡３ｂｃｃを有している。   In addition, a reinforcing member positioning pin mark 3bcc is provided for easy understanding of the positioning when the reinforcing member 3bca is set in the urethane foam mold during the foam molding of the core material 3bc.

また、補強部材３ｂｃａは、芯材３ｂｃよりも熱収縮による変化の少ない材料、例えば金属性の板金などを用いている。   The reinforcing member 3bca is made of a material that is less likely to change due to thermal contraction than the core material 3bc, for example, a metallic sheet metal.

また、ベース部材３ｂｄは、熱可塑性樹脂を異材質で積層して形成されている。   The base member 3bd is formed by stacking thermoplastic resins of different materials.

また、シール部材３ｂａは、アルミ箔の両面を樹脂フィルムでラミネートして積層されて形成されている。   The sealing member 3ba is formed by laminating both surfaces of an aluminum foil with a resin film.

以上のように構成された真空断熱筐体について、以下その動作、作用を説明する。   About the vacuum heat insulation housing | casing comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

まず、冷蔵室扉３の「そり現象」について説明する。冷蔵室扉３の断熱構造とガスケット３ｄにより、冷蔵庫本体２の冷蔵室内側と外側の熱は遮断され、冷凍システムの温度制御により冷蔵室内の温度は所定温度に冷却される。   First, the “sledge phenomenon” of the refrigerator compartment door 3 will be described. The heat insulation structure of the refrigerator compartment door 3 and the gasket 3d block the heat inside and outside the refrigerator body 2 and the temperature inside the refrigerator compartment is cooled to a predetermined temperature by controlling the temperature of the refrigeration system.

ここで、「そり現象」を簡単に説明するために、特に夏場の気温が高い時に、冷蔵室外側環境の外気温度３０〜４０℃により熱膨張し、冷蔵室内側の室温は、約０〜１０℃の範囲で温度制御され熱収縮が生じることで、冷蔵室扉３は庫外側が膨らむように「そり」が発生する力が働く。   Here, in order to briefly explain the “sled phenomenon”, particularly when the temperature in summer is high, thermal expansion occurs due to the outside air temperature of 30-40 ° C. in the outside environment of the refrigerator compartment, and the room temperature inside the refrigerator compartment is about 0-10. When the temperature is controlled in the range of ° C. and thermal contraction occurs, the cold room door 3 is subjected to a force that generates “sledge” so that the outside of the refrigerator swells.

しかしながら、本実施の形態では、内板３ｃは、冷蔵室内側となる庫内部の肉厚Ｔ１より冷蔵室外側となる外周部の肉厚Ｔ２を大きくした偏肉構成としている。具体的には、ガスケット３ｄのアンカー部１２を固定するための凹部１３を境に、内板３ｃの庫内側の内板庫内部１５の肉厚Ｔ１より冷蔵室外側となる内板外周部１４の肉厚Ｔ２を大きくしているので、内板３ｃの庫内側の熱収縮も少なくでき、冷蔵室内外に生じた熱収縮を緩和することができるので、冷蔵室扉３全体のそり発生を防止できる。   However, in the present embodiment, the inner plate 3c has an uneven thickness structure in which the thickness T2 of the outer peripheral portion that is outside the refrigerator compartment is larger than the thickness T1 inside the refrigerator that is the refrigerator compartment side. Specifically, the inner plate outer peripheral portion 14 which is outside the refrigerator compartment from the thickness T1 of the inner plate interior 15 inside the inner plate 3c inside the inner plate 3c with the recess 13 for fixing the anchor portion 12 of the gasket 3d as a boundary. Since the wall thickness T2 is increased, the thermal contraction inside the inner plate 3c can be reduced, and the thermal contraction generated inside and outside the refrigerator compartment can be reduced, so that the entire refrigerator compartment door 3 can be prevented from warping. .

また、本実施の形態では、真空断熱筐体である冷蔵室扉３の真空断熱体３ｂは、内部に芯材３ｂｃと補強部材３ｂｃａとを備え、シール部材３ｂａとベース部材３ｂｄとで内部を真空密閉した構造としているので、真空断熱体３ｂの曲げ剛性が向上し、更に内部が真空封止され、剛性が増すことで、冷蔵庫内外の温度差で生じる熱収縮を低減することができ、冷蔵室扉３全体のそり発生を抑制することができる。   Moreover, in this Embodiment, the vacuum heat insulating body 3b of the refrigerator compartment door 3 which is a vacuum heat insulation housing | casing is equipped with the core material 3bc and the reinforcement member 3bca inside, and the inside is evacuated by the sealing member 3ba and the base member 3bd. Since it has a hermetically sealed structure, the bending rigidity of the vacuum heat insulating body 3b is improved, the inside is further vacuum-sealed, and the rigidity is increased, so that heat shrinkage caused by a temperature difference between the inside and outside of the refrigerator can be reduced, and the refrigerator compartment The warpage of the entire door 3 can be suppressed.

また、芯材３ｂｃを形成する際、連続気泡ウレタン発泡と同時に補強部材３ｂｃａは一体成形されるので、芯材３ｂｃと補強部材３ｂｃａとは一体に構成され、さらに真空断熱体３ｂの曲げ剛性が向上し、冷蔵室扉３全体のそり発生を抑制することができる。   Further, when the core material 3bc is formed, the reinforcing member 3bca is integrally formed at the same time as the foaming of the open cell urethane, so that the core material 3bc and the reinforcing member 3bca are integrally formed, and the bending rigidity of the vacuum heat insulating body 3b is improved. In addition, warpage of the entire refrigerator compartment door 3 can be suppressed.

また、補強部材３ｂｃａは、芯材３ｂｃよりも熱収縮による変化の少ない材料、例えば金属性の板金などを用いているので、より確実に真空断熱体３ｂの曲げ剛性が向上し、冷蔵室扉３全体のそり発生を抑制することができる。   Further, since the reinforcing member 3bca uses a material that is less likely to change due to thermal contraction than the core material 3bc, such as a metal sheet metal, the bending rigidity of the vacuum heat insulating body 3b is more reliably improved, and the refrigerator door 3 Overall warpage can be suppressed.

また、真空断熱体３ｂを構成するベース部材３ｂｄは、熱可塑性樹脂を異材質で積層して形成され、水や空気などのガスバリア性を有するので、真空成形などで自由な形状に形成することができるとともに、真空封止後の外部からの水や空気などのガスの浸入を防止でき真空度を保てるので、断熱性能も長期に保つことができる。   Further, the base member 3bd constituting the vacuum heat insulating body 3b is formed by laminating thermoplastic resins with different materials and has a gas barrier property such as water or air, so it can be formed into a free shape by vacuum forming or the like. In addition, since the intrusion of gas such as water and air from the outside after vacuum sealing can be prevented and the degree of vacuum can be maintained, the heat insulation performance can be maintained for a long time.

また、真空断熱体３ｂを構成するシール部材３ｂａは、極薄アルミ箔の両面を樹脂フィルムでラミネートして積層され、水や空気などのガスバリア性を有するので、真空封止後の外部からの水や空気などのガスの浸入を防止でき真空度を保てるので、断熱性能も長期に保つことができる。   The sealing member 3ba constituting the vacuum heat insulating body 3b is laminated by laminating both surfaces of an ultrathin aluminum foil with a resin film, and has a gas barrier property such as water or air. Insulation performance can be maintained for a long time because the infiltration of gas such as air and air can be prevented and the degree of vacuum can be maintained.

また、真空断熱体３ｂ内に収納されている吸着部材３ｂｂは、真空断熱筐体の内部に発生する水や空気など、或いは外部から侵入する水や空気などを吸着することにより、真空封止後に内部からの発生や、或いは外部から浸入した水や空気などのガスを吸着し、真空度を悪化させないので、断熱性能も長期に保つことができる。   Further, the adsorbing member 3bb accommodated in the vacuum heat insulating body 3b can adsorb water or air generated inside the vacuum heat insulating housing or water or air entering from the outside after vacuum sealing. Heat generation performance can be maintained for a long time because gas such as water or air that has been generated from the inside or from the outside is adsorbed and the degree of vacuum is not deteriorated.

また、真空断熱体３ｂ内に備えた芯材３ｂｃの吸着部材凹部３ｂｃｂは、真空断熱体３ｂの真空封止組立作業時に位置決め、数量管理するために設けられている。   Further, the suction member recess 3bcb of the core material 3bc provided in the vacuum heat insulating body 3b is provided for positioning and quantity control during the vacuum sealing assembly work of the vacuum heat insulating body 3b.

補強部材位置決めピン跡３ｂｃｃは、芯材３ｂｃの発泡成形時に、補強部材３ｂｃａをウレタン発泡金型にセットする時の位置決めを容易にするためのものである。   The reinforcing member positioning pin mark 3bcc is for facilitating positioning when the reinforcing member 3bca is set in the urethane foam mold during foam molding of the core material 3bc.

真空断熱体３ｂ内に備えた芯材３ｂｃの吸着部材凹部３ｂｃｂ、および、補強部材３ｂｃａをウレタン発泡金型にセットする時の位置決めを容易にするための補強部材位置決めピン跡３ｂｃｃは、何れも組立時の作業効率と欠品のない物作りを確実に行うことができる。   The suction member recess 3bcb of the core 3bc provided in the vacuum heat insulating body 3b and the reinforcing member positioning pin mark 3bcc for facilitating positioning when the reinforcing member 3bca is set in the urethane foam mold are both assembled. It is possible to reliably perform work efficiency and timeless production.

また、吸着部材３ｂｂは、真空断熱体３ｂの内部に発生する水や空気など、或いは外部から侵入する水や空気などを吸着することするので、真空断熱体３ｂの真空度を長期に保つことで断熱性能も長期に保つことができる。   Further, the adsorbing member 3bb adsorbs water or air generated inside the vacuum heat insulating body 3b or water or air entering from the outside, so that the vacuum degree of the vacuum heat insulating body 3b can be maintained for a long time. Thermal insulation performance can be maintained for a long time.

なお。本実施の形態では、冷蔵室扉３を用いて説明したが、これに限定されるものではなく、製氷室扉４、野菜室扉５、冷凍室扉６等にも適用することができる。   Note that. In this Embodiment, although demonstrated using the refrigerator compartment door 3, it is not limited to this, It can apply also to the ice-making compartment door 4, the vegetable compartment door 5, the freezer compartment door 6, etc. FIG.

（実施の形態２）
図１２は、本発明の実施の形態２における真空断熱筐体の真空断熱体を構成する芯材と吸着部材の斜視図、図１３は、本発明の実施の形態２における真空断熱筐体の真空断熱体内に配置された吸着部材の環境温度と吸着速度の関係を示すグラフである。なお、実施の形態１と同一構成部分は同一符号を付して詳細な説明は省略する。 (Embodiment 2)
FIG. 12 is a perspective view of the core member and the adsorbing member constituting the vacuum heat insulating body of the vacuum heat insulating housing in the second embodiment of the present invention, and FIG. 13 is the vacuum of the vacuum heat insulating housing in the second embodiment of the present invention. It is a graph which shows the relationship between the environmental temperature of the adsorption | suction member arrange | positioned in a heat insulation body, and adsorption speed. Note that the same components as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

図１２において、真空断熱体３ｂ内の外板３ａ側（高温側）には吸着部材３ｂｂが配置されている。具体的には、真空断熱体３ｂ内の芯材３ｂｃの外板３ａ側（高温側）に複数箇所、吸着部材３ｂｂを収納するための吸着部材凹部３ｂｃｂが設けられている。吸着部材凹部３ｂｃｂは吸着部材３ｂｂを真空断熱体３ｂの真空封止組立作業時に位置決め、数量管理するために設けられたものである。   In FIG. 12, an adsorbing member 3bb is arranged on the outer plate 3a side (high temperature side) in the vacuum heat insulating body 3b. Specifically, a plurality of suction member recesses 3bcb for housing the suction member 3bb are provided on the outer plate 3a side (high temperature side) of the core member 3bc in the vacuum heat insulator 3b. The suction member recess 3bcb is provided for positioning and quantity control of the suction member 3bb during the vacuum sealing assembly work of the vacuum heat insulating body 3b.

また、芯材３ｂｃは、多孔性構造体である連続気泡ウレタンフォームで形成され、芯材３ｂｃを形成する際、連続気泡ウレタン発泡と同時に吸着部材３ｂｂを収納するための吸着部材凹部３ｂｃｂが成形される。   Further, the core material 3bc is formed of an open cell urethane foam which is a porous structure. When the core material 3bc is formed, an adsorbing member recess 3bcb for accommodating the adsorbing member 3bb at the same time as the open cell urethane foaming is formed. The

また、吸着部材３ｂｂは、真空断熱体３ｂの内部に発生する水や空気など、或いは外部から侵入する水や空気などを吸着する。   Further, the adsorbing member 3bb adsorbs water or air generated inside the vacuum heat insulating body 3b or water or air entering from the outside.

図１３は、吸着部材の環境温度と吸着速度の関係を示すグラフであり、温度が高いほど吸着速度が速くなることを示している。   FIG. 13 is a graph showing the relationship between the environmental temperature of the adsorption member and the adsorption speed, and shows that the higher the temperature, the faster the adsorption speed.

以上のように構成された真空断熱筐体について、以下その動作、作用を説明する。   About the vacuum heat insulation housing | casing comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

真空断熱体３ｂ内の芯材３ｂｃに配置された吸着部材３ｂｂは、芯材３ｂｃの外板３ａ側（高温側）に配置されているので、吸着部材３ｂｂの吸着速度と環境温度特性から、吸着速度を速くでき、冷蔵庫が組み立てられて、冷蔵庫を運転した状態で真空断熱体３ｂ内の真空度を長期に亘って維持することができ、冷蔵庫の信頼性を高めることができる。   The adsorption member 3bb arranged on the core material 3bc in the vacuum heat insulating body 3b is arranged on the outer plate 3a side (high temperature side) of the core material 3bc. Therefore, the adsorption member 3bb is adsorbed from the adsorption speed and environmental temperature characteristics of the adsorption member 3bb. The speed can be increased, the refrigerator is assembled, and the degree of vacuum in the vacuum heat insulating body 3b can be maintained over a long period of time while the refrigerator is operated, so that the reliability of the refrigerator can be improved.

また、芯材３ｂｃは、多孔性構造体である連続気泡ウレタンフォームで形成され、芯材３ｂｃを形成する際、連続気泡ウレタン発泡と同時に吸着部材３ｂｂを収納するための吸着部材凹部３ｂｃｂが成形されるので、吸着部材３ｂｂを容易に配置できるとともに、組立工程時の欠品を防止できる。   Further, the core material 3bc is formed of an open cell urethane foam which is a porous structure. When the core material 3bc is formed, an adsorbing member recess 3bcb for accommodating the adsorbing member 3bb at the same time as the open cell urethane foaming is formed. Therefore, the adsorbing member 3bb can be easily arranged, and a shortage during the assembly process can be prevented.

また、吸着部材凹部３ｂｃｂに吸着部材３ｂｂを収納することで、芯材３ｂｃと外板３ａとの間に凹凸が生じることなく、冷蔵室扉３の組立性を高めることができる。   In addition, by housing the suction member 3bb in the suction member recess 3bcb, the assembling property of the refrigerator compartment door 3 can be improved without causing unevenness between the core material 3bc and the outer plate 3a.

また、吸着部材３ｂｂは、真空断熱体３ｂの内部に発生する水や空気など、或いは外部から侵入する水や空気などを吸着するので、真空断熱体３ｂ内の真空度を長期に保つことで断熱性能も長期に保つことができる。   Further, the adsorbing member 3bb adsorbs water or air generated inside the vacuum heat insulating body 3b, or water or air entering from the outside, so that heat insulation can be achieved by maintaining the degree of vacuum in the vacuum heat insulating body 3b for a long time. Performance can be maintained for a long time.

（実施の形態３）
図１４は、本発明の実施の形態３における真空断熱筐体の芯材の発泡成形型構成図、図１５は、本発明の実施の形態３における真空断熱筐体の芯材と発泡成形型の分割構成図である。なお、実施の形態１、２と同一構成部分は同一符号を付して詳細な説明は省略する。 (Embodiment 3)
FIG. 14 is a configuration diagram of a foam molding die of the core material of the vacuum heat insulating casing according to Embodiment 3 of the present invention, and FIG. 15 is a diagram of the core material and the foam molding die of the vacuum insulating casing according to Embodiment 3 of the present invention. FIG. Note that the same components as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

以下、連続気泡発泡ウレタンの連続気泡発泡成形金型７について説明する。   Hereinafter, the open-cell foaming mold 7 of open-cell foamed urethane will be described.

図１４に示すように、連続気泡発泡ウレタンの連続気泡発泡成形金型７は、発泡成形上型７ａと、発泡成形下型７ｂの上下分割型構造としている。   As shown in FIG. 14, the open-cell foaming mold 7 of open-cell foamed urethane has an upper and lower divided structure of a foam-molded upper mold 7a and a foam-molded lower mold 7b.

また、図１５に示すように、発泡成形上型７ａ、および発泡成形下型７ｂを、さらに複数の分割構造としている。具体的には、発泡成形上型７ａの吸着部材凹部３ｂｃｂを形成する部分を上面分割型７ａｂとして、合わせ面を分割型ラインとしている。また、発泡成形下型７ｂは、それぞれの側部を分割した下面分割型７ｂａ（４面）として、芯材３ｂｃの角部に対応する部分で、対角線状（斜辺状）に合わせ面として分割型ラインとしている。   Further, as shown in FIG. 15, the foam-molded upper mold 7a and the foam-molded lower mold 7b have a plurality of divided structures. Specifically, the portion of the foam molding upper mold 7a where the adsorbing member recess 3bcb is formed is the upper surface split mold 7ab, and the mating surface is the split mold line. Further, the foam molding lower mold 7b is a divided mold that is a part corresponding to the corner of the core 3bc as a lower surface divided mold 7ba (four faces) obtained by dividing each side part, and is a diagonal line (slanted side) as a mating face. The line.

上記構成により、連続気泡ウレタンの発泡成形時に発生するガスを抜け易くし、発泡成形上型７ａと、発泡成形下型７ｂの型の合わせに目にガス抜け効果があるので、成形品の表面形状にガス抜けの悪さによる欠肉もない発泡成形品を成形することができる。   With the above configuration, the gas generated during foam molding of open-cell urethane can be easily released, and there is a gas venting effect in the alignment of the foam molding upper mold 7a and the foam molding lower mold 7b. In addition, it is possible to mold a foam-molded product that does not have a lack of wall due to poor gas escape.

また、発泡成形上型７ａは、複数の分割構造とし、連続気泡ウレタンの発泡成形時に発生するガスを抜け易くしているので、成形品の表面形状にガス抜けの悪さによる欠肉もない発泡成形品を成形することができる。   In addition, the foam molding upper die 7a has a plurality of divided structures and facilitates the escape of gas generated during foam molding of open-cell urethane, so the foam shape does not have a lack of gas due to poor gas escape on the surface shape of the molded product. The product can be molded.

また、発泡成形下型７ｂは、複数の分割構造とし、連続気泡ウレタンの発泡成形時に発生するガスを抜け易くしているので、成形品の表面形状にガス抜けの悪さによる欠肉もない発泡成形品を成形することができる。   In addition, the foam molding lower mold 7b has a plurality of divided structures to facilitate the escape of gas generated during foam molding of open-celled urethane, so that foam molding does not have a lack of thickness due to poor gas escape on the surface shape of the molded product. The product can be molded.

また、連続気泡ウレタンの成形後の成形品の表面は、金型分割構造により、連続気泡ウレタンの発泡成形時に発生するガスを抜け易くしているので、ガス抜き跡の分割部にバリを発生することができるので、成形品の表面形状にガス抜けの悪さによる欠肉もない発泡成形品を成形することができる。   In addition, the surface of the molded product after the molding of open-cell urethane facilitates the escape of gas generated during the foam molding of open-cell urethane due to the mold division structure, so that burrs are generated in the degassed traces. Therefore, it is possible to mold a foam molded product in which the surface shape of the molded product does not have a lack of wall due to poor gas escape.

以上のように、本発明に真空断熱筐体は、冷蔵庫に限らず、自動車、ヒートポンプ式給湯機、電気式湯沸かし器、炊飯器、浴槽、住宅の外壁や屋根などの断熱構造にも適用できる。   As described above, the vacuum heat insulating casing of the present invention can be applied not only to a refrigerator but also to a heat insulating structure such as an automobile, a heat pump water heater, an electric water heater, a rice cooker, a bathtub, an outer wall or a roof of a house.

１ 冷蔵庫
２ 冷蔵庫本体
３ 冷蔵室扉（真空断熱筐体）
３ａ 外板
３ｂ 真空断熱体
３ｂａ シール部材
３ｂｂ 吸着部材
３ｂｃ 芯材
３ｂｃａ 補強部材
３ｂｃｂ 吸着部材凹部
３ｂｃｃ 補強板位置き決めピン跡
３ｂｄ ベース部材
３ｃ 内板
３ｄ ガスケット
４ 製氷室扉
５ 野菜室扉
６ 冷凍室扉
７ 連続気泡発泡成形金型
７ａ 発泡成形上型
７ａｂ 上面分割型
７ｂ 発泡成形下型
７ｂａ 下面分割型
１０ 凸部
１１ フランジ部
１２ アンカー部
１３ 凹部
１４ 内板外周部
１５ 内板庫内部 DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Refrigerator main body 3 Refrigeration room door (vacuum insulation housing)
3a outer plate 3b vacuum insulator 3ba sealing member 3bb adsorbing member 3bc core material 3bca reinforcing member 3bcb adsorbing member recess 3bcc reinforcing plate positioning pin mark 3bd base member 3c inner plate 3d gasket 4 ice chamber door 5 freezer compartment door 6 freezer compartment door 6 Door 7 Open-cell foaming mold 7a Foam molding upper mold 7ab Upper surface split mold 7b Foam molding lower mold 7ba Lower surface split mold 10 Convex part 11 Flange part 12 Anchor part 13 Concave part 14 Inner plate outer peripheral part 15 Inner plate interior

Claims (8)

外板と、内板と、前記外板と前記内板の内部に配置された真空断熱体とを備えたもので、前記真空断熱体は、内部に芯材と補強部材とを備え、シール部材とベース部材とで内部を真空密閉した構造としたことを特徴とする真空断熱筐体。 An outer plate, an inner plate, and a vacuum heat insulating member disposed inside the outer plate and the inner plate, the vacuum heat insulating member including a core material and a reinforcing member inside, and a sealing member A vacuum heat insulating housing characterized in that the inside is vacuum sealed with a base member. 前記芯材と前記補強部材とが一体構成されたこと特徴とする請求項１に記載の真空断熱筐体。 The vacuum heat insulating casing according to claim 1, wherein the core member and the reinforcing member are integrally formed. 前記補強部材は、前記芯材よりも熱収縮による変化の少ない材料を用いたことを特徴とする請求項１または２に記載の真空断熱筐体。 The vacuum insulation case according to claim 1 or 2, wherein the reinforcing member is made of a material that is less changed by thermal contraction than the core material. 外板と、内板と、前記外板と前記内板の内部に配置された真空断熱体とを備えたもので、前記真空断熱体は、内部に芯材を備え、シール部材とベース部材とで内部を真空密閉した構造としたもので、前記内板は庫内部の肉厚より外周部の肉厚を大きくしたことを特徴とする真空断熱筐体。 An outer plate, an inner plate, and a vacuum heat insulator disposed inside the outer plate and the inner plate, wherein the vacuum heat insulator includes a core inside, a seal member and a base member, A vacuum heat insulating housing characterized in that the inner plate has a vacuum-sealed structure, and the inner plate has a larger thickness at the outer peripheral portion than the thickness inside the cabinet. 前記ベース部材は、熱可塑性樹脂を異材質で積層して形成されたことを特徴とする請求項１から４のいずれか一項に記載の真空断熱筐体。 The vacuum heat insulating casing according to any one of claims 1 to 4, wherein the base member is formed by laminating thermoplastic resins of different materials. 前記シール部材は、アルミ箔の両面を樹脂フィルムでラミネートして積層されたことを特徴とする請求項１から５のいずれか一項に記載の真空断熱筐体。 The vacuum insulating casing according to any one of claims 1 to 5, wherein the sealing member is laminated by laminating both surfaces of an aluminum foil with a resin film. 前記真空断熱体の内部に吸着部材を備えたことを特徴とする請求項１から６のいずれか一項に記載の真空断熱筐体。 The vacuum heat insulating housing according to any one of claims 1 to 6, wherein an adsorption member is provided inside the vacuum heat insulating body. 請求項１から７のいずれか一項に記載の真空断熱筐体を備えた冷蔵庫。 The refrigerator provided with the vacuum heat insulation housing | casing as described in any one of Claim 1 to 7.
JP2017066970A 2017-03-30 2017-03-30 Vacuum heat insulation housing and refrigerator Pending JP2018169097A (en)

Priority Applications (4)

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JP2017066970A JP2018169097A (en) 2017-03-30 2017-03-30 Vacuum heat insulation housing and refrigerator
CN201880021971.0A CN110494706B (en) 2017-03-30 2018-03-28 Vacuum heat insulation box body and refrigerator using same
PCT/JP2018/012673 WO2018181440A1 (en) 2017-03-30 2018-03-28 Vacuum heat insulation case and refrigerator using same
JP2021133090A JP7182040B2 (en) 2017-03-30 2021-08-18 Vacuum Insulated Enclosures and Refrigerators

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JP2016038142A (en) * 2014-08-07 2016-03-22 パナソニックＩｐマネジメント株式会社 Door for refrigerator
WO2016113423A1 (en) * 2015-01-15 2016-07-21 Kingspan Holdings (Irl) Limited Vacuum insulating panel
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB757520A (en) * 1952-10-23 1956-09-19 Gen Electric Improvements in and relating to insulating structures
JPS6144278A (en) * 1984-08-08 1986-03-03 松下冷機株式会社 Manufacture of heat-insulating box body
JP2000018486A (en) * 1998-06-29 2000-01-18 Mitsubishi Electric Corp Thermally insulated casing and manufacture thereof
JP2000320958A (en) * 1999-05-11 2000-11-24 Mitsubishi Electric Corp Vacuum heat insulating body and heat insulating structural body
JP2002257465A (en) * 2001-02-27 2002-09-11 Toshiba Corp Heat insulation door structure of refrigerator
JP2008185220A (en) * 2008-04-24 2008-08-14 Hitachi Appliances Inc Vacuum heat insulation material
JP2013119966A (en) * 2011-12-06 2013-06-17 Toshiba Corp Heat insulation box
JP2015096740A (en) * 2013-11-15 2015-05-21 パナソニックＩｐマネジメント株式会社 Vacuum heat insulation housing
JP2016038143A (en) * 2014-08-07 2016-03-22 パナソニックＩｐマネジメント株式会社 Door for refrigerator
JP2016038142A (en) * 2014-08-07 2016-03-22 パナソニックＩｐマネジメント株式会社 Door for refrigerator
WO2016113423A1 (en) * 2015-01-15 2016-07-21 Kingspan Holdings (Irl) Limited Vacuum insulating panel
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