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JP2006242439A - Refrigerator and manufacturing method thereof - Google Patents

Refrigerator and manufacturing method thereof Download PDF

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Publication number
JP2006242439A
JP2006242439A JP2005056925A JP2005056925A JP2006242439A JP 2006242439 A JP2006242439 A JP 2006242439A JP 2005056925 A JP2005056925 A JP 2005056925A JP 2005056925 A JP2005056925 A JP 2005056925A JP 2006242439 A JP2006242439 A JP 2006242439A
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heat insulation
inner box
vacuum heat
insulation panel
outer box
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Tsutomu Kono
務 河野
Kuninari Araki
邦成 荒木
Hisashi Echigoya
恒 越後屋
Takashi Izeki
崇 井関
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Hitachi Global Life Solutions Inc
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Hitachi Home and Life Solutions Inc
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Abstract

【課題】冷蔵庫において、コーナー部におけるウレタン発泡樹脂の局部的な収縮を抑制して外箱の歪みもしくは内箱の割れを防止すると共に、冷蔵庫本体の熱漏洩量を低減して消費電力を低減すること。
【解決手段】冷蔵庫は、内箱１と外箱２とで構成される空間内に複数の真空断熱パネルを配設すると共にウレタン発泡樹脂４を充填した断熱壁を有する。真空断熱パネルは外箱面に設置した外箱側真空断熱パネル３ａと内箱面に設置した内箱側真空断熱パネル３ｂとからなる。外箱側真空断熱パネル３ａは外箱コーナー部２ｅの近傍まで延びている。外箱側真空断熱パネル３ａの設置面に隣接する外箱面に対向する内箱面１ａに設置された内箱側真空断熱パネル３ｂは、外箱コーナー部２ｅに対向した内箱コーナー部１ｅを覆ってさらに外箱側真空断熱パネル３ａの投影面で重なる位置まで内箱面１ｂに沿って延びている。
【選択図】図１
In a refrigerator, local shrinkage of urethane foam resin in a corner portion is suppressed to prevent distortion of the outer box or cracking of the inner box, and to reduce power consumption by reducing the amount of heat leakage of the refrigerator body. thing.
A refrigerator has a heat insulation wall in which a plurality of vacuum heat insulation panels are arranged in a space constituted by an inner box 1 and an outer box 2 and filled with urethane foam resin 4. A vacuum heat insulation panel consists of the outer box side vacuum heat insulation panel 3a installed in the outer box surface, and the inner box side vacuum heat insulation panel 3b installed in the inner box surface. The outer box side vacuum heat insulation panel 3a extends to the vicinity of the outer box corner portion 2e. The inner box side vacuum heat insulation panel 3b installed on the inner box surface 1a facing the outer box surface adjacent to the installation surface of the outer box side vacuum heat insulation panel 3a has an inner box corner portion 1e facing the outer box corner portion 2e. Further, it extends along the inner box surface 1b to a position overlapping with the projection surface of the outer box side vacuum heat insulation panel 3a.
[Selection] Figure 1

Description

本発明は、冷蔵庫及びその製造方法に係り、特に内箱と外箱とで構成される空間内に複数の真空断熱パネルを配設すると共にウレタン発泡樹脂を充填した冷蔵庫本体を備えた冷蔵庫及びその製造方法に好適なものである。   The present invention relates to a refrigerator and a method for manufacturing the same, and more particularly, a refrigerator including a plurality of vacuum heat insulation panels disposed in a space constituted by an inner box and an outer box and a refrigerator main body filled with urethane foam resin, and the refrigerator It is suitable for the manufacturing method.

近年の地球環境保全意識の高まりもあって、冷蔵庫の消費電力を低減することが望まれている。従来はウレタン発泡樹脂を冷蔵庫本体の断熱材として使用してきたが、グラスウールなどの芯材を薄肉の複合樹脂のフィルム内に配置して真空引きすることにより形成された真空断熱パネルの方がウレタン発泡樹脂よりも熱伝導率を低くできるために、真空断熱パネルをウレタン発泡樹脂と併用して用いる冷蔵庫が開発されている。   With the recent increase in awareness of global environmental conservation, it is desirable to reduce the power consumption of refrigerators. Conventionally, urethane foam resin has been used as a heat insulation material for refrigerators, but vacuum insulation panels formed by placing a core material such as glass wool in a thin composite resin film and evacuating it are urethane foam. In order to make the thermal conductivity lower than that of a resin, a refrigerator using a vacuum heat insulating panel in combination with a urethane foam resin has been developed.

従来の真空断熱パネルを用いた冷蔵庫としては、例えば特開２００４−２０１４８号公報（特許文献１）に示されたものがある。この冷蔵庫は、図６に示すように、内箱２２と外箱２３とで構成される空間内に複数の真空断熱パネル（真空断熱材）４１、４３、４４、４４ａ、４６を配設すると共にウレタン発泡樹脂（硬質ウレタンフォーム）２４を充填した断熱壁を有する冷蔵庫本体２１を備えて構成されている。   As a refrigerator using the conventional vacuum heat insulation panel, there exist some which were shown by Unexamined-Japanese-Patent No. 2004-20148 (patent document 1), for example. As shown in FIG. 6, this refrigerator has a plurality of vacuum heat insulating panels (vacuum heat insulating materials) 41, 43, 44, 44 a, 46 disposed in a space constituted by an inner box 22 and an outer box 23. A refrigerator main body 21 having a heat insulating wall filled with urethane foam resin (rigid urethane foam) 24 is provided.

この冷蔵庫本体２１は、同じ厚さの上壁、両側壁及び底壁を有しており、複数の貯蔵室２６、２７、２８、２９を形成している。温度の高い貯蔵室２６、２７が上部に配置され、温度の低い貯蔵室２８、２９が下部に配置されている。この冷蔵庫本体２１に配設された真空断熱パネル４１、４３、４４、４４ａ、４６は、温度の高い貯蔵室２６、２７に対応する外箱上面及び外箱両側面に設置した外箱側真空断熱パネル４１、４４と、温度の低い貯蔵室２８、２９に対応する内箱下面及び内箱両側面に設置した内箱側真空断熱パネル４３、４４ａと、仕切り壁に設置した仕切り側真空断熱パネル４６と、から構成されている。そして、温度の高い貯蔵室２６、２７に対応する外箱側真空断熱パネル４４の下端部と温度の低い貯蔵室２８、２９に対応する内箱両側面に設置した内箱側真空断熱パネル４４ａの上端部との投影面が重なるように配置されている。   The refrigerator main body 21 has an upper wall, both side walls, and a bottom wall having the same thickness, and forms a plurality of storage chambers 26, 27, 28, and 29. The high temperature storage chambers 26 and 27 are arranged at the top, and the low temperature storage chambers 28 and 29 are arranged at the bottom. The vacuum heat insulation panels 41, 43, 44, 44a, 46 disposed in the refrigerator main body 21 are the outer box side vacuum heat insulation installed on the upper surface of the outer box corresponding to the high temperature storage chambers 26, 27 and on both sides of the outer box. Panels 41 and 44, inner box side vacuum heat insulation panels 43 and 44a installed on the lower surface of the inner box and both side surfaces of the inner box corresponding to the low temperature storage chambers 28 and 29, and a partition side vacuum heat insulation panel 46 installed on the partition wall And is composed of. And the inner box side vacuum heat insulation panel 44a installed in the lower end part of the outer box side vacuum heat insulation panel 44 corresponding to the storage chambers 26 and 27 with high temperature, and the inner box both sides | surfaces corresponding to the storage chambers 28 and 29 with low temperature. It arrange | positions so that the projection surface with an upper end part may overlap.

特開２００４−２０１４８号公報JP 2004-20148 A

しかし、真空断熱パネルを用いた特許文献１に示す冷蔵庫では、冷蔵庫本体２１の上壁または底壁と両側壁とが交差するコーナー部に真空断熱パネル４１、４３、４４、４４ａが配置されていないため、真空断熱パネルを設置していないコーナー部からの熱漏洩量が大きく、消費電力が十分に低減できないという問題があった。特に、温度の低い冷凍室を構成する貯蔵室２９を形成する底壁と両側壁とが交差するコーナー部からの熱漏洩量が著しく大きいことが問題であった。   However, in the refrigerator shown in Patent Document 1 using a vacuum heat insulating panel, the vacuum heat insulating panels 41, 43, 44, and 44a are not arranged at the corners where the upper wall or bottom wall of the refrigerator main body 21 intersects both side walls. For this reason, there is a problem that the amount of heat leakage from the corner portion where no vacuum heat insulation panel is installed is large, and the power consumption cannot be sufficiently reduced. In particular, there was a problem that the amount of heat leakage from the corner portion where the bottom wall and both side walls forming the storage chamber 29 constituting the low temperature freezing chamber intersect is remarkably large.

また、上壁または底壁と両側壁とを連結するコーナー部は断熱壁が局部的に厚くなる部分であり、特許文献１に示す冷蔵庫では、この部分に真空断熱パネル４１、４３、４４、４４ａが設置されておらず、ウレタン発泡樹脂２４だけが設置されているので、コーナー部におけるウレタン発泡樹脂２４の冷却時の局部的な収縮により、外箱２３の歪もしくは内箱２１の割れが発生するおそれがあった。   Moreover, the corner part which connects an upper wall or a bottom wall and both side walls is a part where a heat insulation wall becomes thick locally, and in the refrigerator shown in patent document 1, it is a vacuum heat insulation panel 41, 43, 44, 44a in this part. Since only the urethane foam resin 24 is installed, distortion of the outer box 23 or cracking of the inner box 21 occurs due to local contraction when the urethane foam resin 24 is cooled in the corner portion. There was a fear.

さらには、外箱側真空断熱パネル４４の下端部と内箱側真空断熱パネル４４ａの上端部との重なり部のウレタン発泡樹脂２４の充填隙間が狭くなり、ウレタン発泡樹脂２４の流動性を阻害し、生産性が低下したり、ウレタン発泡樹脂の未充填部分ができたりするおそれがあった。   Furthermore, the filling gap of the urethane foam resin 24 at the overlapping portion between the lower end portion of the outer box side vacuum heat insulation panel 44 and the upper end portion of the inner box side vacuum heat insulation panel 44a becomes narrow, and the fluidity of the urethane foam resin 24 is hindered. Further, there is a risk that productivity is lowered or an unfilled portion of the urethane foam resin is formed.

本発明の目的は、コーナー部におけるウレタン発泡樹脂の局部的な収縮を抑制して外箱の歪みもしくは内箱の割れを防止することができると共に、冷蔵庫本体の熱漏洩量を低減して消費電力を低減することができる冷蔵庫及びその製造方法を提供することにある。   The object of the present invention is to suppress local shrinkage of the urethane foam resin at the corner portion to prevent distortion of the outer box or cracking of the inner box, and to reduce the amount of heat leakage of the refrigerator body to reduce power consumption. Is to provide a refrigerator and a method for manufacturing the same.

前述の目的を達成するための本発明の第１の態様は、内箱と外箱とで構成される空間内に複数の真空断熱パネルを配設すると共にウレタン発泡樹脂を充填した断熱壁を有する冷蔵庫本体を備え、外箱面に設置した外箱側真空断熱パネルと内箱面に設置した内箱側真空断熱パネルとから前記真空断熱パネルを構成してなる冷蔵庫において、前記外箱側真空断熱パネルを外箱コーナー部の近傍まで延ばし、前記外箱側真空断熱パネルの設置面に隣接する外箱面に対向する内箱面に設置された前記内箱側真空断熱パネルを、前記外箱コーナー部に対向した内箱コーナー部を覆ってさらに前記外箱側真空断熱パネルの投影面で重なる位置まで内箱面に沿って延ばしたものである。   The first aspect of the present invention for achieving the above-mentioned object has a heat insulating wall in which a plurality of vacuum heat insulating panels are disposed in a space constituted by an inner box and an outer box and filled with urethane foam resin. In the refrigerator comprising the refrigerator main body and comprising the vacuum heat insulation panel from the outer box side vacuum heat insulation panel installed on the outer box surface and the inner box side vacuum heat insulation panel installed on the inner box surface, the outer box side vacuum heat insulation Extending the panel to the vicinity of the outer box corner portion, the inner box side vacuum heat insulation panel installed on the inner box surface facing the outer box surface adjacent to the installation surface of the outer box side vacuum heat insulation panel, the outer box corner It extends along the inner box surface to a position that covers the inner box corner portion facing the portion and further overlaps with the projection surface of the outer box side vacuum heat insulation panel.

係る本発明の第１の態様におけるより好ましい具体的構成例は次の通りである。
（１）冷蔵庫本体内に複数の温度の異なる貯蔵室を形成し、温度の低い貯蔵室を構成する断熱壁が他の貯蔵室を構成する断熱壁より厚くなるように前記内箱を形成し、前記外箱側真空断熱パネルと前記内箱側真空断熱パネルとの重なり部分を前記温度の低い貯蔵室の断熱壁に位置させたこと。
（２）前記温度の低い貯蔵室を最下部に配置し、前記温度の低い貯蔵室の両側の断熱壁が前記他の貯蔵室の両側の断熱壁より厚くなるように前記内箱を形成し、平板状の前記外箱側真空断熱パネルを前記外箱の両側面に前記温度の低い貯蔵室と前記他の貯蔵室とにまたがって対応するように設置し、前記内箱側真空断熱パネルを前記内箱の底面から左右両側の内箱コーナー部を覆ってさらに内箱両側面に沿って延ばしたこと。
（３）前記温度の低い貯蔵室の両側の断熱壁における前記内箱側真空断熱パネルと前記外箱側真空断熱パネルとの重なり部の間隙に位置するウレタン発泡樹脂の厚さを、前記他の貯蔵室の両側断熱壁における前記外箱側真空断熱パネルと前記内箱との間に位置するウレタン発泡樹脂の厚さと同等以上にしたこと。
（４）前記内箱の両側面における前記左右両側の内箱コーナー部から上方に至る所定範囲を平坦部としており、前記内箱側真空断熱パネルを前記内箱両側面の平坦部に沿って延ばしたこと。
（５）前記内箱側真空断熱パネルと前記外箱側真空断熱パネルとの重なり方向寸法を５ｍｍ以上としたこと。 A more preferable specific configuration example in the first aspect of the present invention is as follows.
(1) In the refrigerator body, a plurality of storage rooms having different temperatures are formed, and the inner box is formed so that the heat insulation walls constituting the low temperature storage rooms are thicker than the heat insulation walls constituting the other storage rooms, The overlapping part of the outer box side vacuum heat insulation panel and the inner box side vacuum heat insulation panel is positioned on the heat insulation wall of the storage room having a low temperature.
(2) The storage box having the low temperature is disposed at the bottom, and the inner box is formed so that the heat insulating walls on both sides of the low temperature storage room are thicker than the heat insulating walls on both sides of the other storage room, A flat plate-like outer box side vacuum heat insulation panel is installed on both side surfaces of the outer box so as to span the low temperature storage room and the other storage room, and the inner box side vacuum heat insulation panel is Covering the inner box corners on the left and right sides from the bottom of the inner box, and extending along both sides of the inner box.
(3) The thickness of the urethane foam resin positioned in the gap between the inner box side vacuum heat insulation panel and the outer box side vacuum heat insulation panel on the heat insulation walls on both sides of the low temperature storage chamber The thickness of the urethane foam resin located between the outer box side vacuum heat insulation panel and the inner box on both side heat insulation walls of the storage room is equal to or greater than that.
(4) A predetermined range extending upward from the left and right inner box corners on both side surfaces of the inner box is defined as a flat part, and the inner box side vacuum heat insulation panel is extended along the flat parts on both side surfaces of the inner box. Was it.
(5) The overlapping dimension of the inner box side vacuum heat insulation panel and the outer box side vacuum heat insulation panel should be 5 mm or more.

また、本発明の第２の態様は、内箱と外箱とで構成される空間内に複数の真空断熱パネルを配設すると共にウレタン発泡樹脂を充填した断熱壁を有する冷蔵庫本体を備え、外箱面に設置した外箱側真空断熱パネルと内箱面に設置した内箱側真空断熱パネルとから前記真空断熱パネルを構成してなる冷蔵庫の製造方法において、平板状の前記外箱側真空断熱パネルを外箱コーナー部の近傍まで延ばして外箱面に貼り付け、平板状の前記内箱側真空断熱パネルを、前記外箱側真空断熱パネルの設置面に隣接する外箱面に対向する内箱面から前記外箱コーナー部に対向した内箱コーナー部を覆ってさらに前記外箱側真空断熱パネルに対向して重なる位置まで内箱面を覆うように変形して貼り付け、しかる後に前記ウレタン発泡樹脂を前記内箱と前記外箱とで構成される空間内に充填して断熱壁を形成するようにしたことにある。   The second aspect of the present invention includes a refrigerator main body having a heat insulating wall filled with urethane foam resin and a plurality of vacuum heat insulating panels disposed in a space constituted by an inner box and an outer box. In the manufacturing method of the refrigerator which comprises the said vacuum heat insulation panel from the outer box side vacuum heat insulation panel installed in the box surface, and the inner box side vacuum heat insulation panel installed in the inner box surface, the flat said outer box side vacuum heat insulation The panel is extended to the vicinity of the corner of the outer box and attached to the outer box surface, and the flat inner heat insulating panel on the inner side faces the outer box surface adjacent to the installation surface of the outer box side vacuum insulating panel. Covering the inner box corner portion facing the outer box corner portion from the box surface, further deforming and pasting the inner box surface to a position overlapping the outer box side vacuum heat insulation panel, and then applying the urethane Foamed resin and the inner box In that so as to form a heat insulating wall is filled into the space formed by a box.

係る本発明の第２の態様におけるより好ましい具体的構成例は次の通りである。
（１）温度の低い貯蔵室を構成する断熱壁が他の貯蔵室を構成する断熱壁より厚くなるように前記内箱を形成し、前記外箱側真空断熱パネルと前記内箱側真空断熱パネルとの重なり部分を前記温度の低い貯蔵室の断熱壁に位置させ、しかる後に前記ウレタン発泡樹脂を前記内箱と前記外箱とで構成される空間内に充填して断熱壁を形成すること。 A more preferable specific configuration example in the second aspect of the present invention is as follows.
(1) The inner box is formed so that a heat insulating wall constituting a low temperature storage chamber is thicker than a heat insulating wall constituting another storage chamber, and the outer box side vacuum heat insulating panel and the inner box side vacuum heat insulating panel are formed. And the urethane foam resin is filled into the space formed by the inner box and the outer box to form a heat insulating wall.

本発明の冷蔵庫及びその製造方法によれば、コーナー部におけるウレタン発泡樹脂の局部的な収縮を抑制して外箱の歪みもしくは内箱の割れを防止することができると共に、冷蔵庫本体の熱漏洩量を低減して消費電力を低減することができる。   According to the refrigerator of the present invention and the manufacturing method thereof, local shrinkage of the urethane foam resin in the corner portion can be suppressed to prevent the outer box from being distorted or the inner box from being cracked, and the amount of heat leakage of the refrigerator body It is possible to reduce power consumption.

以下、本発明の一実施例に係る冷蔵庫及びその製造方法について図１から図５を用いて説明する。   Hereinafter, a refrigerator and a manufacturing method thereof according to an embodiment of the present invention will be described with reference to FIGS.

まず、本実施例の冷蔵庫の全体に関して図１及び図２を参照しながら説明する。図１は本発明の第１実施例に係る冷蔵庫の冷蔵庫本体部分の縦断面正面図、図２は図１の冷蔵庫に用いる内箱と外箱を示す斜視図である。   First, the whole refrigerator of a present Example is demonstrated, referring FIG.1 and FIG.2. 1 is a longitudinal sectional front view of a refrigerator main body portion of a refrigerator according to a first embodiment of the present invention, and FIG. 2 is a perspective view showing an inner box and an outer box used in the refrigerator of FIG.

冷蔵庫は、箱状に形成された冷蔵庫本体５と、冷蔵庫本体５の前面開口を開閉する扉（図示せず）とを備えて構成されている。冷蔵庫本体５は、合成樹脂製の内箱１とこの内箱１を覆う鋼板製の外箱２とで構成される空間内に、複数の真空断熱パネル３ａ、３ｂを配設すると共に、ウレタン発泡樹脂４を充填することにより形成した断熱壁を有している。この断熱壁は、底壁、両側壁、上壁及び背壁から構成されている。この両側壁は、薄い部分（貯蔵室１１、１２の両側壁部分）で３０ｍｍ程度、厚い部分（貯蔵室１０の両側壁部分）で５０ｍｍ程度の厚さを有している。   The refrigerator includes a refrigerator main body 5 formed in a box shape and a door (not shown) that opens and closes the front opening of the refrigerator main body 5. The refrigerator body 5 includes a plurality of vacuum heat insulating panels 3a and 3b and urethane foam in a space formed by a synthetic resin inner box 1 and a steel plate outer box 2 covering the inner box 1. It has a heat insulating wall formed by filling the resin 4. The heat insulating wall is composed of a bottom wall, side walls, a top wall, and a back wall. The both side walls have a thickness of about 30 mm at a thin portion (both side wall portions of the storage chambers 11 and 12) and a thickness of about 50 mm at a thick portion (both side wall portions of the storage chamber 10).

また、冷蔵庫本体５は、温度の異なる貯蔵室１０〜１２を複数形成しており、各貯蔵室１０〜１２間には区画壁（図示せず）が設けられている。貯蔵室１０は、温度の低い貯蔵室（具体的には冷凍室）であり、複数の貯蔵室における最下部に配置されている。貯蔵室１１は、温度の低い貯蔵室１０より温度が高い貯蔵室（具体的には野菜室）であり、複数の貯蔵室における中間部に配置されている。貯蔵室１２は、温度の低い貯蔵室１０より温度が高い貯蔵室（具体的には冷蔵室）であり、複数の貯蔵室における最上部に配置されている。貯蔵室１０〜１２は、圧縮機、凝縮器、減圧装置及び冷却器などからなる冷凍サイクル及び冷却ファンなどを用いて冷却される。   The refrigerator body 5 has a plurality of storage chambers 10 to 12 having different temperatures, and partition walls (not shown) are provided between the storage chambers 10 to 12. The storage room 10 is a low temperature storage room (specifically, a freezing room), and is arranged at the lowermost part of the plurality of storage rooms. The storage room 11 is a storage room (specifically a vegetable room) whose temperature is higher than that of the low temperature storage room 10, and is arranged in an intermediate part of the plurality of storage rooms. The storage room 12 is a storage room (specifically, a refrigeration room) having a higher temperature than the storage room 10 having a low temperature, and is disposed at the top of the plurality of storage rooms. The storage chambers 10 to 12 are cooled using a refrigeration cycle, a cooling fan, and the like including a compressor, a condenser, a decompression device, and a cooler.

内箱１は、貯蔵室１０〜１２を形成する壁面を構成するものであり、底面１ａ、両側面１ｂ、上面１ｃ及び背面１ｄからなっている。そして、内箱１は、温度の低い貯蔵室１０の両側の断熱壁が他の貯蔵室１１、１２の両側の断熱壁より厚くなるように形成されている。内箱１の底面１ａの左右両側の内箱コーナー部１ｅは、円弧面または傾斜面を有して形成されている。内箱１の両側面１ｂは、左右両側の内箱コーナー部１ｅから上方に延びる所定範囲に平坦部１ｆが形成され、それより上方に延びる範囲に凹段部１ｇなどが形成されている。   The inner box 1 constitutes a wall surface that forms the storage chambers 10 to 12, and includes a bottom surface 1a, both side surfaces 1b, an upper surface 1c, and a back surface 1d. The inner box 1 is formed so that the heat insulating walls on both sides of the low temperature storage chamber 10 are thicker than the heat insulating walls on both sides of the other storage chambers 11 and 12. Inner box corner portions 1e on the left and right sides of the bottom surface 1a of the inner box 1 are formed to have an arc surface or an inclined surface. On both side surfaces 1b of the inner box 1, flat portions 1f are formed in a predetermined range extending upward from the left and right inner box corner portions 1e, and concave step portions 1g and the like are formed in a range extending further upward.

外箱２は、冷蔵庫本体５の外観を形成する壁面を構成するものであり、底面２ａ、両側面２ｂ、上面２ｃ及び背面２ｄからなっている。両側面２ｂは全体が平坦面で形成されている。   The outer box 2 constitutes a wall surface that forms the appearance of the refrigerator body 5 and includes a bottom surface 2a, both side surfaces 2b, an upper surface 2c, and a back surface 2d. Both side surfaces 2b are formed as flat surfaces as a whole.

上述した複数の真空断熱パネル３ａ、３ｂは、外箱面に密着して設置した外箱側真空断熱パネル３ａと、内箱面に密着して設置した内箱側真空断熱パネル３ｂとから構成されている。真空断熱パネル３ａ、３ｂは、１０ｍｍ程度の厚さで構成されている。   The plurality of vacuum heat insulating panels 3a and 3b described above are composed of an outer box side vacuum heat insulating panel 3a installed in close contact with the outer box surface and an inner box side vacuum heat insulating panel 3b installed in close contact with the inner box surface. ing. The vacuum heat insulation panels 3a and 3b are configured with a thickness of about 10 mm.

外箱側真空断熱パネル３ａは、平板状に構成されており、外箱２の両側面２ｂに、温度の低い貯蔵室１０と他の貯蔵室１１、１２とにまたがって対応するように設置されると共に、底面２ａの左右両側の外箱コーナー部２ｅの近傍まで延びている。換言すれば、両側面２ｂに設置される外箱側真空断熱パネル３ａは、外箱２の両側面２ｂのほぼ上下全体にわたって設置されている。   The outer box side vacuum heat insulation panel 3a is formed in a flat plate shape, and is installed on both side surfaces 2b of the outer box 2 so as to correspond to the low temperature storage chamber 10 and the other storage chambers 11 and 12. And extends to the vicinity of the outer box corner 2e on both the left and right sides of the bottom surface 2a. In other words, the outer box side vacuum heat insulation panel 3a installed on the both side surfaces 2b is installed over substantially the entire upper and lower sides of the both side surfaces 2b of the outer box 2.

内箱１の底面１ａに設置された内箱側真空断熱パネル３ｂは、外箱コーナー部２ｅに対向した内箱コーナー部１ｅを覆ってさらに外箱側真空断熱パネル３ａの投影面で重なる位置まで内箱面に沿って延びるように設置されている。具体的には、内箱１の底面１ａに設置された内箱側真空断熱パネル３ｂは、左右両側の内箱コーナー部１ｅを覆って延びると共に、温度の低い貯蔵室１０の両側の厚い断熱壁を形成する内箱１の両側面１ｂの平坦部に沿って延び、この厚い断熱壁に位置して外箱側真空断熱パネル３ａの投影面で重なるように設置されている。温度の低い貯蔵室１０の両側の断熱壁における内箱側真空断熱パネル３ｂと外箱側真空断熱パネル３ａとの重なり部の間隙に位置するウレタン発泡樹脂４の厚さは、他の貯蔵室１１、１２の両側断熱壁における外箱側真空断熱パネル３ａと内箱１との間に位置するウレタン発泡樹脂４の厚さと同等以上に設定されている。   The inner box side vacuum heat insulation panel 3b installed on the bottom surface 1a of the inner box 1 covers the inner box corner part 1e facing the outer box corner part 2e and further overlaps with the projection surface of the outer box side vacuum heat insulation panel 3a. It is installed so as to extend along the inner box surface. Specifically, the inner box side vacuum heat insulation panel 3b installed on the bottom surface 1a of the inner box 1 extends to cover the inner box corner portions 1e on both the left and right sides, and has thick insulating walls on both sides of the storage room 10 having a low temperature. It extends along the flat part of the both side surfaces 1b of the inner box 1 forming the inner wall 1 and is positioned so as to be positioned on this thick heat insulating wall so as to overlap the projection surface of the outer box side vacuum heat insulating panel 3a. The thickness of the urethane foam resin 4 located in the gap between the inner box side vacuum heat insulation panel 3b and the outer box side vacuum heat insulation panel 3a on the heat insulation walls on both sides of the low temperature storage room 10 is different from that of the other storage room 11. The thickness of the urethane foam resin 4 positioned between the outer box side vacuum heat insulation panel 3a and the inner box 1 in the both side heat insulation walls is set to be equal to or greater than that.

かかる冷蔵庫本体５の断熱壁の製造方法を説明する。内箱１の底面１ａに設置される内箱側真空断熱パネル３ｂとして、変形可能な平板状に形成されているものを用いると共に、外箱２の両側面２ｂに設置される外箱側真空断熱パネル３ａとして、剛性を有する平板状に形成されているものを用いる。内箱１に内箱側真空断熱パネル３ｂを変形して上述の状態に設置してテープなどで貼り付けると共に、外箱２に外箱側真空断熱パネル３ａを上述の状態に設置してテープなどで貼り付ける。このように構成した内箱１及び外箱２を組合せ、内箱１と外箱２とで構成される空間内にウレタン発泡樹脂４を充填してモールドすることにより、断熱壁を形成する。外箱側真空断熱パネル３ａ及び内箱側真空断熱パネル３ｂは、ウレタン発泡樹脂４の発泡圧により外箱２及び内箱１の設置面に押圧されて密着され、ウレタン発泡樹脂４により周囲を保持されて固定される。   The manufacturing method of the heat insulation wall of this refrigerator main body 5 is demonstrated. As the inner box side vacuum heat insulation panel 3b installed on the bottom surface 1a of the inner box 1, a deformable flat plate is used, and the outer box side vacuum heat insulation installed on both side surfaces 2b of the outer box 2 As the panel 3a, one having a flat plate shape having rigidity is used. The inner box side vacuum heat insulation panel 3b is deformed on the inner box 1 and installed in the above-described state and attached with a tape or the like, and the outer box side vacuum heat insulation panel 3a is installed on the outer box 2 in the above state or the like. Paste with. A heat insulating wall is formed by combining the inner box 1 and the outer box 2 configured as described above, filling the urethane foam resin 4 in a space formed by the inner box 1 and the outer box 2 and molding. The outer box side vacuum heat insulation panel 3a and the inner box side vacuum heat insulation panel 3b are pressed and brought into close contact with the installation surface of the outer box 2 and the inner box 1 by the foaming pressure of the urethane foam resin 4, and the periphery is held by the urethane foam resin 4 To be fixed.

次に、内箱１と外箱２に設置された真空断熱パネル３ａ、３ｂ間の重なり部の有無による熱漏洩量の評価を図３から図５を参照しながら説明する。図３は熱漏洩量の評価のための簡易形状モデル５Ａの例を示す断面図、図４は図３の簡易形状モデル５Ａによる真空断熱パネル３ａ、３ｂの重なり寸法Ｌを変更した場合における熱漏洩量計算結果を示す特性図、図５は低温度側１４（内箱１ｂ側）のみに真空断熱パネル３ｂを全面的に用いた簡易形状モデル５Ａの例を示す断面図である。なお、図３及び図５の簡易形状モデル５Ａにおける各部の符号は、本実施例の冷蔵庫における各部に対応する符号を用いている。   Next, the evaluation of the amount of heat leakage based on the presence or absence of an overlapping portion between the vacuum heat insulation panels 3a and 3b installed in the inner box 1 and the outer box 2 will be described with reference to FIGS. FIG. 3 is a cross-sectional view showing an example of a simple shape model 5A for evaluating the amount of heat leakage, and FIG. 4 is a heat leak when the overlap dimension L of the vacuum heat insulating panels 3a and 3b is changed by the simple shape model 5A of FIG. FIG. 5 is a cross-sectional view showing an example of a simple shape model 5A in which the vacuum heat insulating panel 3b is entirely used only on the low temperature side 14 (inner box 1b side). In addition, the code | symbol corresponding to each part in the refrigerator of a present Example is used for the code | symbol of each part in 5 A of simple shape models of FIG.3 and FIG.5.

簡易形状モデル５Ａは矩形の平板で構成されている。簡易形状モデル５Ａの真空断熱パネル３ａ、３ｂと発泡ウレタン樹脂４とで構成される全体の断熱層の肉厚は５０ｍｍであり、紙面の上下方向の寸法は８００ｍｍであり、紙面の奥行き方向の寸法は５００ｍｍである。また、真空断熱パネル３ａ、３ｂの肉厚は１０ｍｍである。真空断熱パネル３ａ、３ｂの重なり寸法Ｌは、重ならずに間隔が空いているときに＋の値で表示し、重なっているときは−の値で表示した。ここで、解析の条件は、低温度側１４の貯蔵室１０の温度を−１８℃、高温度側１５（外箱２ｂ側）の外気温度を３０℃、低温度側１４の室内空気と断熱層との熱伝達率６．６３Ｗ／（ｍ２・Ｋ）、高温度側１５の外気と断熱層との熱伝達率５．８２Ｗ／（ｍ２・Ｋ）、真空断熱パネル３の熱伝導率０．００３Ｗ／（ｍ・Ｋ）、ウレタン発泡樹脂４の熱伝導率０．０１７Ｗ／（ｍ・Ｋ）とした。なお、室内空気及び外気の温度は常に一定とした。解析には汎用熱流体ソフトを用い、全体の断熱層を１３０００の直行差分要素で分割し、１０００００ｓ後の低温度側１４の熱漏洩量を計算した。また、図５に示すように、低温度側１４だけに真空断熱パネル３ｂを全面設置した検討も行った。 The simple shape model 5A is composed of a rectangular flat plate. The thickness of the entire heat insulating layer constituted by the vacuum heat insulating panels 3a and 3b and the urethane foam resin 4 of the simple shape model 5A is 50 mm, the vertical dimension of the paper surface is 800 mm, and the depth direction dimension of the paper surface. Is 500 mm. Moreover, the thickness of the vacuum heat insulation panels 3a and 3b is 10 mm. The overlap dimension L of the vacuum heat insulating panels 3a and 3b is displayed as a positive value when there is a gap without overlapping, and is displayed as a negative value when they are overlapped. Here, the analysis conditions are: the temperature of the storage chamber 10 on the low temperature side 14 is −18 ° C., the outside air temperature on the high temperature side 15 (outer box 2b side) is 30 ° C., the indoor air on the low temperature side 14 and the heat insulation layer. heat transfer coefficient 6.63W / (m 2 · K) , the heat transfer coefficient 5.82W / (m 2 · K) with the outside air and the heat insulating layer with a high temperature-side 15, the thermal conductivity of the vacuum insulating panel 3 with 0 0.003 W / (m · K), and the thermal conductivity of the urethane foam resin 4 was 0.017 W / (m · K). The temperature of the room air and the outside air was always constant. For the analysis, general-purpose thermal fluid software was used, and the entire heat insulating layer was divided by 13000 direct difference elements, and the amount of heat leakage on the low temperature side 14 after 100,000 s was calculated. Moreover, as shown in FIG. 5, the examination which installed the vacuum heat insulation panel 3b in the whole surface only on the low temperature side 14 was also performed.

低温度側１４の最外層における各要素について、熱伝導率をλ（Ｗ／（ｍ・Ｋ））、温度勾配方向の肉厚δ（ｍ）、低温度側１４の最外層の面積をＡ（ｍ２）、低温度側１４の外気温度をＴｃ（℃）、要素内の高温度側１５の温度をＴｈ（℃）とすると、熱漏洩量Ｑ（Ｗ）は次の式（１）及び式（２）で表せる。
Ｑ ＝（Ｔｈ−Ｔｃ）・Ａ・ｋｖ …（１）
Ｋｖ＝１／（１／α＋δ／λ） …（２）
熱漏洩量Ｑの計算結果を図４に示す。図４から明らかなように、真空断熱パネル３ａ、３ｂ間の重なり寸法Ｌによって熱漏洩量Ｑは大きく変化し、真空断熱パネル３ａ、３ｂ間で重なりが生ずると（重なり寸法Ｌが０以下になると）、熱漏洩量Ｑは大幅に低いものとなる。また、図５に示す低温度側１４だけに真空断熱パネル３ｂを全面設置した場合の計算結果と等しい熱漏洩量Ｑとするための真空断熱パネル３間の重なり寸法Ｌは−７．５ｍｍである。温度勾配方向の両側に設置する真空断熱パネル３ａ、３ｂの配置として、断熱層の温度勾配方向に一面全てに真空断熱パネル３ｂを設置した場合よりも熱漏洩量が少なくなることが望ましいので、真空断熱パネル３ａ、３ｂ間の重なり寸法Ｌは、真空断熱パネル３ａ、３ｂの貼付け寸法を考慮してＬ＜−５ｍｍであることが望ましい。 For each element in the outermost layer on the low temperature side 14, the thermal conductivity is λ (W / (m · K)), the thickness δ (m) in the temperature gradient direction, and the area of the outermost layer on the low temperature side 14 is A ( m 2 ), the outside air temperature on the low temperature side 14 is Tc (° C.), and the temperature on the high temperature side 15 in the element is Th (° C.), the amount of heat leakage Q (W) is expressed by the following equations (1) and It can be expressed by (2).
Q = (Th−Tc) · A · kv (1)
Kv = 1 / (1 / α + δ / λ) (2)
The calculation result of the heat leak amount Q is shown in FIG. As is clear from FIG. 4, the heat leakage amount Q varies greatly depending on the overlap dimension L between the vacuum heat insulation panels 3a and 3b, and when the overlap occurs between the vacuum heat insulation panels 3a and 3b (when the overlap dimension L becomes 0 or less). ), The amount of heat leakage Q is significantly low. Moreover, the overlap dimension L between the vacuum heat insulation panels 3 for making the heat leakage amount Q equal to the calculation result when the vacuum heat insulation panel 3b is installed on the entire surface only on the low temperature side 14 shown in FIG. 5 is −7.5 mm. . As the arrangement of the vacuum heat insulation panels 3a and 3b installed on both sides in the temperature gradient direction, it is desirable that the amount of heat leakage be smaller than when the vacuum heat insulation panel 3b is installed on the entire surface in the temperature gradient direction of the heat insulation layer. The overlap dimension L between the heat insulating panels 3a and 3b is preferably L <-5 mm in consideration of the pasting dimensions of the vacuum heat insulating panels 3a and 3b.

本実施例によれば、外箱側真空断熱パネル３ａを外箱コーナー部２ｅの近傍まで延ばし、外箱側真空断熱パネル３ａの設置面に隣接する外箱面に対向する内箱面１ａに設置された内箱側真空断熱パネル３ｂを、外箱コーナー部２ｅに対向した内箱コーナー部１ｅを覆ってさらに外箱側真空断熱パネル３ａの投影面で重なる位置まで内箱面１ｂに沿って延ばすようにしているので、コーナー部におけるウレタン発泡樹脂の局部的な収縮を抑制して外箱の歪みもしくは内箱の割れを防止することができると共に、冷蔵庫本体５の熱漏洩量を低減して消費電力を低減することができる。   According to the present embodiment, the outer box side vacuum heat insulation panel 3a is extended to the vicinity of the outer box corner portion 2e and installed on the inner box surface 1a facing the outer box surface adjacent to the installation surface of the outer box side vacuum heat insulation panel 3a. The inner box side vacuum heat insulation panel 3b thus formed extends along the inner box surface 1b to a position that covers the inner box corner portion 1e facing the outer box corner portion 2e and overlaps with the projection surface of the outer box side vacuum heat insulation panel 3a. As a result, local shrinkage of the urethane foam resin at the corner portion can be suppressed to prevent distortion of the outer box or cracking of the inner box, and to reduce consumption of heat from the refrigerator body 5 Electric power can be reduced.

また、本実施例によれば、冷蔵庫本体５内に複数の温度の異なる貯蔵室１０〜１２を形成し、温度の低い貯蔵室１０を構成する断熱壁が他の貯蔵室１１、１２を構成する断熱壁より厚くなるように内箱１を形成し、外箱側真空断熱パネル３ａと内箱側真空断熱パネル３ｂとの重なり部分を温度の低い貯蔵室１０の断熱壁に位置させるようにしているので、温度の低い貯蔵室１０を構成する断熱壁における熱漏洩量を効果的に低減しつつ、重なり部分におけるウレタン発泡樹脂４の流動性を阻害することなく、生産性の高いものとすることができる。   Moreover, according to a present Example, the storage chambers 10-12 from which several temperature differs in the refrigerator main body 5 are formed, and the heat insulation wall which comprises the storage chamber 10 with low temperature comprises the other storage chambers 11 and 12. The inner box 1 is formed so as to be thicker than the heat insulating wall, and the overlapping portion of the outer box side vacuum heat insulating panel 3a and the inner box side vacuum heat insulating panel 3b is positioned on the heat insulating wall of the storage chamber 10 having a low temperature. Therefore, it is possible to achieve high productivity without hindering the fluidity of the urethane foam resin 4 in the overlapping portion while effectively reducing the amount of heat leakage in the heat insulating wall constituting the low temperature storage chamber 10. it can.

また、本実施例によれば、温度の低い貯蔵室１０を最下部に配置し、温度の低い貯蔵室１０の両側の断熱壁が他の貯蔵室１１、１２の両側の断熱壁より厚くなるように内箱１を形成し、平板状の外箱側真空断熱パネル３ａを外箱２の両側面に温度の低い貯蔵室１０と他の貯蔵室１１、１２とにまたがって対応するように設置し、内箱側真空断熱パネル３ｂを内箱１の底面から左右両側の内箱コーナー部１ｅを覆ってさらに内箱両側面１ｂに沿って延ばすようにしているので、内箱側真空断熱パネル３ｂ及び外箱側真空断熱パネル３ａの数を減らすと共に、温度の低い貯蔵室１０を構成する断熱壁における熱漏洩量をさらに効果的に低減しつつ、重なり部分におけるウレタン発泡樹脂４の流動性を阻害することなく、生産性の高いものとすることができる。   In addition, according to the present embodiment, the storage room 10 having a low temperature is arranged at the lowermost part, and the heat insulation walls on both sides of the low temperature storage room 10 are thicker than the heat insulation walls on both sides of the other storage rooms 11 and 12. The inner box 1 is formed, and a flat outer box-side vacuum heat insulation panel 3a is installed on both sides of the outer box 2 so as to correspond to the low temperature storage chamber 10 and the other storage chambers 11 and 12. Since the inner box side vacuum heat insulation panel 3b extends from the bottom surface of the inner box 1 to the left and right inner box corners 1e and further along the inner box side surfaces 1b, the inner box side vacuum heat insulation panel 3b and While reducing the number of outer box side vacuum heat insulation panels 3a and further effectively reducing the amount of heat leakage in the heat insulation wall constituting the low temperature storage chamber 10, the fluidity of the urethane foam resin 4 in the overlapping portion is inhibited. Without having to be productive Can.

また、本実施例によれば、温度の低い貯蔵室１０の両側の断熱壁における内箱側真空断熱パネル３ｂと外箱側真空断熱パネル３ａとの重なり部の間隙に位置するウレタン発泡樹脂の厚さを、他の貯蔵室１１、１２の両側断熱壁における外箱側真空断熱パネル３ａと内箱１との間に位置するウレタン発泡樹脂４の厚さと同等以上にしているので、重なり部分におけるウレタン発泡樹脂４の流動性を確実に確保して、生産性の高いものとすることができる。   Further, according to the present embodiment, the thickness of the urethane foam resin located in the gap between the overlapping portions of the inner box side vacuum heat insulation panel 3b and the outer box side vacuum heat insulation panel 3a on the heat insulation walls on both sides of the storage chamber 10 having a low temperature. Since the thickness is equal to or greater than the thickness of the urethane foam resin 4 located between the outer box side vacuum heat insulation panel 3a and the inner box 1 on both side heat insulation walls of the other storage chambers 11 and 12, urethane in the overlapping portion It is possible to ensure the fluidity of the foamed resin 4 and to increase the productivity.

また、本実施例によれば、内箱１の両側面における左右両側の内箱コーナー部１ｅから上方に至る所定範囲を平坦部１ｆとしており、内箱側真空断熱パネル３ｂを内箱両側面の平坦部１ｆに沿って延ばしているので、内箱側真空断熱パネル３ｂを内箱両側面の平坦部１ｆに確実に密着させることができる。   In addition, according to the present embodiment, the predetermined range from the left and right inner box corners 1e on the both side surfaces of the inner box 1 to the upper side is the flat part 1f, and the inner box side vacuum heat insulation panel 3b is formed on both side surfaces of the inner box. Since it is extended along the flat part 1f, the inner box side vacuum heat insulation panel 3b can be reliably stuck to the flat part 1f on both side surfaces of the inner box.

本発明の第１実施例に係る冷蔵庫の冷蔵庫本体部分の縦断面正面図である。It is a longitudinal cross-sectional front view of the refrigerator main-body part of the refrigerator which concerns on 1st Example of this invention. 図１の冷蔵庫に用いる内箱と外箱を示す斜視図である。It is a perspective view which shows the inner box and outer box which are used for the refrigerator of FIG. 熱漏洩量の評価のための簡易形状モデルの例を示す断面図である。It is sectional drawing which shows the example of the simple shape model for evaluation of the amount of heat leaks. 図３の簡易形状モデルによる真空断熱パネルの重なり方向の寸法を変更した場合における熱漏洩量計算結果を示す特性図である。It is a characteristic view which shows the heat leak amount calculation result at the time of changing the dimension of the overlap direction of the vacuum heat insulation panel by the simple shape model of FIG. 低温度側のみに真空断熱パネルを全面的に用いた簡易形状モデルの例を示す断面図である。It is sectional drawing which shows the example of the simple shape model which used the vacuum heat insulation panel for the whole surface only on the low temperature side. 従来の冷蔵庫の冷蔵庫本体部分の縦断面正面図である。It is a longitudinal cross-sectional front view of the refrigerator main-body part of the conventional refrigerator.

符号の説明Explanation of symbols

１…内箱、１ａ…底面、１ｂ…側面、１ｃ…上面、１ｄ…背面、１ｅ…コーナー部、１ｆ…平坦部、１ｇ…凹凸部、２…外箱、２ａ…底面、２ｂ…側面、２ｃ…上面、２ｄ…背面、２ｅ…コーナー部、３ａ，３ｂ…真空断熱パネル、４…ウレタン発泡樹脂、５…冷蔵庫本体、５Ａ…簡易形状モデル、１０…貯蔵室（冷凍室）、１１…貯蔵室（野菜室）、１２…貯蔵室（冷蔵室）。   DESCRIPTION OF SYMBOLS 1 ... Inner box, 1a ... Bottom surface, 1b ... Side surface, 1c ... Upper surface, 1d ... Back surface, 1e ... Corner part, 1f ... Flat part, 1g ... Uneven part, 2 ... Outer box, 2a ... Bottom surface, 2b ... Side surface, 2c ... upper surface, 2d ... back surface, 2e ... corner, 3a, 3b ... vacuum insulation panel, 4 ... urethane foam resin, 5 ... refrigerator body, 5A ... simple shape model, 10 ... storage room (freezer room), 11 ... storage room (Vegetable room), 12 ... Storage room (refrigerated room).

Claims (8)

内箱と外箱とで構成される空間内に複数の真空断熱パネルを配設すると共にウレタン発泡樹脂を充填した断熱壁を有する冷蔵庫本体を備え、
外箱面に設置した外箱側真空断熱パネルと内箱面に設置した内箱側真空断熱パネルとから前記真空断熱パネルを構成してなる冷蔵庫において、
前記外箱側真空断熱パネルを外箱コーナー部の近傍まで延ばし、
前記外箱側真空断熱パネルの設置面に隣接する外箱面に対向する内箱面に設置された前記内箱側真空断熱パネルを、前記外箱コーナー部に対向した内箱コーナー部を覆ってさらに前記外箱側真空断熱パネルの投影面で重なる位置まで内箱面に沿って延ばした
ことを特徴とする冷蔵庫。 Provided with a refrigerator body having a heat insulating wall filled with urethane foam resin and a plurality of vacuum heat insulating panels disposed in a space constituted by an inner box and an outer box,
In the refrigerator comprising the vacuum insulation panel from the outer box side vacuum insulation panel installed on the outer box surface and the inner box side vacuum insulation panel installed on the inner box surface,
Extend the outer box side vacuum insulation panel to the vicinity of the outer box corner,
Covering the inner box side vacuum insulation panel installed on the inner box surface facing the outer box surface adjacent to the installation surface of the outer box side vacuum insulation panel, covering the inner box corner portion facing the outer box corner portion Furthermore, it extended along the inner box surface to the position which overlaps with the projection surface of the said outer box side vacuum heat insulation panel, The refrigerator characterized by the above-mentioned. 請求項１に記載の冷蔵庫において、冷蔵庫本体内に複数の温度の異なる貯蔵室を形成し、温度の低い貯蔵室を構成する断熱壁が他の貯蔵室を構成する断熱壁より厚くなるように前記内箱を形成し、前記外箱側真空断熱パネルと前記内箱側真空断熱パネルとの重なり部分を前記温度の低い貯蔵室の断熱壁に位置させたことを特徴とする冷蔵庫。   The refrigerator according to claim 1, wherein a plurality of storage chambers having different temperatures are formed in the refrigerator body, and the heat insulation walls constituting the low temperature storage chambers are thicker than the heat insulation walls constituting the other storage chambers. The refrigerator which formed the inner box and located the overlapping part of the said outer box side vacuum heat insulation panel and the said inner box side vacuum heat insulation panel in the heat insulation wall of the said storage room with low temperature. 請求項２に記載の冷蔵庫において、前記温度の低い貯蔵室を最下部に配置し、前記温度の低い貯蔵室の両側の断熱壁が前記他の貯蔵室の両側の断熱壁より厚くなるように前記内箱を形成し、平板状の前記外箱側真空断熱パネルを前記外箱の両側面に前記温度の低い貯蔵室と前記他の貯蔵室とにまたがって対応するように設置し、前記内箱側真空断熱パネルを前記内箱の底面から左右両側の内箱コーナー部を覆ってさらに内箱両側面に沿って延ばしたことを特徴とする冷蔵庫。   The refrigerator according to claim 2, wherein the low-temperature storage room is disposed at a lowermost part, and the insulating walls on both sides of the low-temperature storage room are thicker than the insulating walls on both sides of the other storage room. An inner box is formed, and the flat outer case side vacuum heat insulation panel is installed on both sides of the outer box so as to correspond to the low temperature storage chamber and the other storage chamber, and the inner box A refrigerator characterized in that a side vacuum heat insulation panel is extended from the bottom of the inner box to the left and right inner box corners along the both sides of the inner box. 請求項３に記載の冷蔵庫において、前記温度の低い貯蔵室の両側の断熱壁における前記内箱側真空断熱パネルと前記外箱側真空断熱パネルとの重なり部の間隙に位置するウレタン発泡樹脂の厚さを、前記他の貯蔵室の両側断熱壁における前記外箱側真空断熱パネルと前記内箱との間に位置するウレタン発泡樹脂の厚さと同等以上にしたことを特徴とする冷蔵庫。   The thickness of the urethane foam resin located in the gap | interval of the overlap part of the said inner-box side vacuum heat insulation panel and the said outer-box side vacuum heat insulation panel in the heat insulation wall of the both sides of the said low temperature storage room in the refrigerator of Claim 3 The refrigerator is characterized in that the thickness is equal to or greater than the thickness of the urethane foam resin located between the outer box side vacuum heat insulation panel and the inner box on both side heat insulation walls of the other storage room. 請求項３に記載の冷蔵庫において、前記内箱の両側面における前記左右両側の内箱コーナー部から上方に至る所定範囲を平坦部としており、前記内箱側真空断熱パネルを前記内箱両側面の平坦部に沿って延ばしたことを特徴とする冷蔵庫。   The refrigerator according to claim 3, wherein a predetermined range extending upward from the left and right inner box corners on both side surfaces of the inner box is a flat portion, and the inner box side vacuum heat insulation panel is formed on both side surfaces of the inner box. A refrigerator characterized by extending along a flat portion. 請求項１に記載の冷蔵庫において、前記内箱側真空断熱パネルと前記外箱側真空断熱パネルとの重なり方向寸法を５ｍｍ以上としたことを特徴とする冷蔵庫。   The refrigerator according to claim 1, wherein a dimension in an overlapping direction between the inner box side vacuum heat insulation panel and the outer box side vacuum heat insulation panel is set to 5 mm or more. 内箱と外箱とで構成される空間内に複数の真空断熱パネルを配設すると共にウレタン発泡樹脂を充填した断熱壁を有する冷蔵庫本体を備え、外箱面に設置した外箱側真空断熱パネルと内箱面に設置した内箱側真空断熱パネルとから前記真空断熱パネルを構成してなる冷蔵庫の製造方法において、
平板状の前記外箱側真空断熱パネルを外箱コーナー部の近傍まで延ばして外箱面に貼り付け、
平板状の前記内箱側真空断熱パネルを、前記外箱側真空断熱パネルの設置面に隣接する外箱面に対向する内箱面から前記外箱コーナー部に対向した内箱コーナー部を覆ってさらに前記外箱側真空断熱パネルに対向して重なる位置まで内箱面を覆うように変形して貼り付け、
しかる後に前記ウレタン発泡樹脂を前記内箱と前記外箱とで構成される空間内に充填して断熱壁を形成する
ことを特徴とする冷蔵庫の製造方法。 An outer box side vacuum heat insulation panel provided with a refrigerator body having a heat insulation wall filled with urethane foam resin and a plurality of vacuum heat insulation panels disposed in a space constituted by an inner box and an outer box. In the manufacturing method of the refrigerator comprising the vacuum heat insulation panel from the inner box side vacuum heat insulation panel installed on the inner box surface,
Extend the flat box-like vacuum insulation panel on the outer box to the vicinity of the outer box corner and paste it on the outer box surface,
Covering the inner box corner portion facing the outer box corner portion from the inner box surface facing the outer box surface adjacent to the installation surface of the outer box side vacuum heat insulation panel, the flat inner case side vacuum heat insulation panel Furthermore, deformed and pasted so as to cover the inner box surface to the position overlapping the outer box side vacuum heat insulation panel,
Thereafter, the urethane foam resin is filled in a space formed by the inner box and the outer box to form a heat insulating wall. 請求項７に記載の冷蔵庫の製造方法において、温度の低い貯蔵室を構成する断熱壁が他の貯蔵室を構成する断熱壁より厚くなるように前記内箱を形成し、前記外箱側真空断熱パネルと前記内箱側真空断熱パネルとの重なり部分を前記温度の低い貯蔵室の断熱壁に位置させ、しかる後に前記ウレタン発泡樹脂を前記内箱と前記外箱とで構成される空間内に充填して断熱壁を形成することを特徴とする冷蔵庫の製造方法。
In the manufacturing method of the refrigerator of Claim 7, the said inner box is formed so that the heat insulation wall which comprises a low temperature storage room may become thicker than the heat insulation wall which comprises another storage room, The said outer box side vacuum heat insulation The overlapping portion of the panel and the inner box side vacuum heat insulation panel is positioned on the heat insulation wall of the low temperature storage chamber, and then the urethane foam resin is filled into the space constituted by the inner box and the outer box And forming a heat insulating wall.
JP2005056925A 2005-03-02 2005-03-02 Refrigerator and manufacturing method thereof Withdrawn JP2006242439A (en)

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