JP2018167485A - Foam molding die, foam molded article, vacuum insulating enclosure, and refrigerator - Google Patents

Foam molding die, foam molded article, vacuum insulating enclosure, and refrigerator Download PDF

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JP2018167485A
JP2018167485A JP2017066972A JP2017066972A JP2018167485A JP 2018167485 A JP2018167485 A JP 2018167485A JP 2017066972 A JP2017066972 A JP 2017066972A JP 2017066972 A JP2017066972 A JP 2017066972A JP 2018167485 A JP2018167485 A JP 2018167485A
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foam
foam molding
vacuum heat
open
mold
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JP6850967B2 (en
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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 PCT/JP2018/012673 priority patent/WO2018181440A1/en
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Abstract

To provide a foam molding die for efficiently integrally foaming the whole space inside a vacuum insulating enclosure with an open-cell urethane foam.SOLUTION: An open-cell foam molding die 7 as an open-cell foam molding urethane foam molding die comprises a main body part (foam molding lower die 7b) and a lid body part (foam molding upper die 7a), and the foam molding lower die 7b and the foam molding upper die 7a have an opening/closing structure. By forming a mating surface of the foam molding lower die 7b and the foam molding upper die 7a of a foam molded article as a gas vent structure, it is easy for gas generated when foaming an open-cell urethane foam to escape, and the foam molded article of the open-cell urethane form can be formed with no inconvenience of an appearance shape.SELECTED DRAWING: Figure 15

Description

本発明は、冷蔵庫などに用いた真空断熱筐体に用いる芯材を発泡成形するための発泡成形金型に関するものである。   The present invention relates to a foam molding die for foam molding of a core material used in a vacuum heat insulating casing used in 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し、断熱技術の性能進化に期待されている。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、断熱部材３７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, there has been an active movement to promote energy conservation as a countermeasure against global warming, which is a global environmental problem, and the performance of heat insulation technology is expected to evolve. Conventionally, this type of heat insulation technology has a structure including a vacuum heat insulation panel 34 and a heat insulation member 37 provided in a space inside the door frame 30, as shown in FIGS. A technology that improves heat insulation performance is proposed. In addition, the vacuum heat insulation panel 34 means the structure which improved the heat insulation performance by evacuating the inside of a plate-shaped container. (For example, refer to 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の内部の断熱空間に平板形状の真空断熱パネル３４と、断熱部材３７を組合せた構造であり、真空断熱パネル３４と、断熱部材３７は、分割独立した構成のため、断熱性能も悪化するという課題があった。   However, in the above conventional configuration, a flat vacuum heat insulation panel 34 and a heat insulation member 37 are combined in a heat insulation space inside the door frame 30, and the vacuum heat insulation panel 34 and the heat insulation member 37 are divided and independent. For this reason, there was a problem that the heat insulation performance deteriorated.

本発明は、上記従来の課題を解決するもので、真空断熱筐体内部の空間全てを連続気泡発泡ウレタンで効率的に一体発泡成形するための発泡成形金型を提供することを目的とする。   The present invention solves the above-described conventional problems, and an object of the present invention is to provide a foam mold for efficiently integrally foam-molding the entire space inside the vacuum heat insulating casing with open-cell foamed urethane.

上記従来の課題を解決するために、本発明の発泡成形金型は、続気泡発泡ウレタンの発泡成形金型であって、前記発泡成形金型は、本体部と、蓋体部とを備え、前記本体部と前記蓋体部は開閉構造とし、発泡成形品の前記本体部と前記蓋体部との合わせ面をガス抜き構造としたものである。   In order to solve the above conventional problems, the foam molding die of the present invention is a foam molding die of open-cell foamed urethane, and the foam molding die includes a main body portion and a lid portion, The main body part and the lid body part have an opening / closing structure, and the mating surface of the main body part and the lid body part of the foam molded product has a gas venting structure.

これによって、連続気泡ウレタンフォームが発泡する時に発生するガスを抜け易くでき、外観形状不具合もない連続気泡ウレタンフォーム発泡成形品を確保することができる。   As a result, it is possible to easily release the gas generated when the open-cell urethane foam is foamed, and it is possible to secure an open-cell urethane foam foam-molded product free from defects in appearance.

本発明の発泡成形金型は、外観形状の不具合もない連続気泡ウレタンフォーム発泡成形品を確保することができるので、優れた真空断熱筐体を提供することができる。   Since the foam molding mold of the present invention can secure an open-cell urethane foam foam molded product that does not have a defect in appearance, an excellent vacuum heat insulating casing can be provided.

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、連続気泡発泡ウレタンの発泡成形金型であって、前記発泡成形金型は、本体部と、蓋体部とを備え、前記本体部と前記蓋体部は開閉構造とし、発泡成形品の前記本体部と前記蓋体部との合わせ面をガス抜き構造としたことにより、連続気泡ウレタンフォームが発泡する時に発生するガスを抜け易くでき、外観形状の不具合もなく連続気泡発泡ウレタンの発泡成形品を形成することができる。   1st invention is a foaming mold of open-cell foamed urethane, The said foaming mold is provided with a body part and a lid part, and the above-mentioned body part and the above-mentioned lid part have an opening and closing structure, By adopting a gas venting structure on the mating surface between the main body part and the lid part of the foam molded product, the gas generated when the open-cell urethane foam is foamed can be easily released, and the open-cell foaming is possible without any defects in the external shape. A urethane foam molded product can be formed.

第２の発明は、第１の発明において、前記本体部は分割金型とし、前記分割金型の合わせ面をガス抜き構造としたことにより、連続気泡ウレタンフォームが発泡する時に発生するガスをさらに抜け易くでき、外観形状の不具合もなく連続気泡発泡ウレタンの発泡成形品を形成することができる。   According to a second invention, in the first invention, the main body portion is a split mold, and the mating surface of the split mold has a gas venting structure, so that the gas generated when the open-cell urethane foam is foamed is further increased. It can be easily removed, and an open-cell foamed urethane foam molded product can be formed without any defects in the external shape.

第３の発明は、第１または第２の発明において、前記蓋体部は分割金型とし、前記分割金型の合わせ面をガス抜き構造としたことにより、連続気泡ウレタンフォームが発泡する時に発生するガスをさらに抜け易くでき、外観形状の不具合もなく連続気泡発泡ウレタンの発泡成形品を形成することができる。   According to a third aspect of the present invention, in the first or second aspect of the invention, the lid portion is a split mold, and the mating surface of the split mold has a gas venting structure. It is possible to easily remove the gas to be formed, and it is possible to form a foamed product of open-cell foamed urethane without defects in the external shape.

第４の発明は、第１から第３のいずれかの発明に記載の発泡成形金型で成形された発泡成形品であり、前記発泡成形品を芯材とした所望の真空断熱体を得ることができる。   A fourth invention is a foam molded article molded by the foam molding die according to any one of the first to third inventions, and obtains a desired vacuum heat insulating body using the foam molded article as a core material. Can do.

第５の発明は、第４の発明に記載の発泡成形品を用いた真空断熱筐体であり、複雑な形状で断熱性能の高い真空断熱筐体を提供することができる。   5th invention is the vacuum heat insulation housing | casing using the foaming molded product as described in 4th invention, and can provide the vacuum heat insulation housing | casing with a complicated shape and high heat insulation performance.

第６の発明は、第４の発明に記載の真空断熱筐体を用いた冷蔵庫であり、断熱性能の高い省エネが可能な冷蔵庫を提供することができる。   6th invention is the refrigerator using the vacuum heat insulation housing | casing as described in 4th invention, and can provide the refrigerator in which heat insulation is high and energy saving is possible.

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３ｂｃｂ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 a reinforcing member 3bca formed by integral foaming and an adsorbing member 3bb, and an adsorbing member recess 3bcb and a reinforcing member in a part of the core material 3bc. The member position locating pin mark is 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、本発明の真空断熱筐体を形成するための連続気泡発泡ウレタンの発泡成形金型は、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用いる連続気泡発泡ウレタンの発泡成形品に
も適用できる。 As described above, the foaming mold of the open cell foam urethane for forming the vacuum heat insulating casing of the present invention is not limited to a refrigerator, but is an automobile, a heat pump water heater, an electric water heater, a rice cooker, a bathtub, a house. It can also be applied to foamed molded products of open cell foamed urethane used for heat insulation structures such as outer walls and roofs.

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 (6)

連続気泡発泡ウレタンの発泡成形金型であって、前記発泡成形金型は、本体部と、蓋体部とを備え、前記本体部と前記蓋体部は開閉構造とし、発泡成形品の前記本体部と前記蓋体部との合わせ面をガス抜き構造としたことを特徴とする発泡成形金型。 A foam-molding mold of open-cell foamed urethane, wherein the foam-molding mold includes a main body portion and a lid body portion, and the main body portion and the lid body portion have an opening / closing structure, and the main body of the foam-molded product. A foaming mold characterized in that the mating surface of the part and the lid part has a gas venting structure. 前記本体部は分割金型とし、前記分割金型の合わせ面をガス抜き構造としたことを特徴とする請求項１に記載の発泡成形金型。 The foaming mold according to claim 1, wherein the main body portion is a split mold, and a mating surface of the split mold has a gas venting structure. 前記蓋体部は分割金型とし、前記分割金型の合わせ面をガス抜き構造としたことを特徴とする請求項１または２に記載の発泡成形金型。 The foaming mold according to claim 1 or 2, wherein the lid portion is a split mold, and a mating surface of the split mold has a gas venting structure. 請求項１から３のいずれか一項に記載の発泡成形金型で成形された発泡成形品。 A foam-molded article molded by the foam-molding die according to any one of claims 1 to 3. 請求項４に記載の発泡成形品を用いた真空断熱筐体。 The vacuum heat insulation housing | casing using the foaming molded product of Claim 4. 請求項５に記載の真空断熱筐体を用いた冷蔵庫。 A refrigerator using the vacuum heat insulating casing according to claim 5.
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PCT/JP2018/012673 WO2018181440A1 (en) 2017-03-30 2018-03-28 Vacuum heat insulation case and refrigerator using same

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JPH03169518A (en) * 1989-11-29 1991-07-23 Nishikawa Kasei Kk Manufacture of foam molded product
JPH11281246A (en) * 1998-01-27 1999-10-15 Mitsubishi Electric Corp Total vacuum heat insulation case refrigerator using the case, manufacture of the case and method for disassembling it
JP2003181839A (en) * 2001-12-19 2003-07-02 Toyo Tire & Rubber Co Ltd Molding die for expansion-molded article, and manufacturing method for expansion-molded article using the die
JP2006175615A (en) * 2004-12-20 2006-07-06 Toyo Tire & Rubber Co Ltd Mold for foamed molded product, manufacturing method of foamed molded product and foamed molded product
JP2006175766A (en) * 2004-12-24 2006-07-06 Toyo Tire & Rubber Co Ltd Mold of foamed molded product, manufacturing method of foamed molded product and foamed molded product
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