JP2005233506A - Refrigerator - Google Patents

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JP2005233506A
JP2005233506A JP2004042999A JP2004042999A JP2005233506A JP 2005233506 A JP2005233506 A JP 2005233506A JP 2004042999 A JP2004042999 A JP 2004042999A JP 2004042999 A JP2004042999 A JP 2004042999A JP 2005233506 A JP2005233506 A JP 2005233506A
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refrigerator
heat insulating
urethane
groove
vacuum heat
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JP4196851B2 (en
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Nobutake Sakumoto
展威 作本
Mutsumi Kato
睦 加藤
Tetsushi Nakatsu
哲史 中津
Sho Hanaoka
祥 花岡
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator of high safety and reliability free from gas leakage even when a flammable refrigerant is used, in which the deformation of a vacuum heat insulating material and a condensation pipe is hardly found, in the refrigerator provided with a vacuum heat insulating panel. <P>SOLUTION: This refrigerator wherein a heat insulating casing is constituted by filling a foam urethane heat insulating material between an outer casing and an inner casing, and a refrigerant pipe is mounted in the heat insulating casing, comprises the vacuum heat insulating panel mounted on an inner face of the outer casing in a state of being buried in the urethane heat insulating material, and a groove part formed on the vacuum heat insulating panel of a part where the vacuum heat insulating panel and the inner face of the outer casing are kept into contact with each other, and having a depth of about 1.2-2 times an outer diameter of the refrigerant pipe, and the refrigerant pipe is mounted on the groove part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、真空断熱パネルを用いた冷蔵庫に関するものである。   The present invention relates to a refrigerator using a vacuum heat insulation panel.

従来の冷蔵庫は外箱と内箱間にウレタン断熱材を発泡充填することにより断熱箱体を構成し、かつ外箱内面に取付けられ、ウレタン断熱材中に埋設された真空断熱パネルと、真空断熱パネルと外箱とが接触する部分の外周における外箱内面に取付けられた凝縮パイプとを備えている。   A conventional refrigerator forms a heat insulating box by foaming and filling urethane heat insulating material between the outer box and the inner box, and is attached to the inner surface of the outer box, embedded in the urethane heat insulating material, and a vacuum heat insulating panel. A condensing pipe attached to the inner surface of the outer box on the outer periphery of the portion where the panel and the outer box contact.

真空断熱パネルは、外箱内面に取付けられ、ウレタン断熱材中に埋設することにより、冷蔵庫庫内へ侵入する熱量を削減、あるいは断熱の壁厚を薄くし庫内容積もしくは冷蔵庫外形寸法を小さくすることができるとしている。(たとえば特許文献1参照)   The vacuum insulation panel is attached to the inner surface of the outer box and embedded in urethane insulation to reduce the amount of heat entering the refrigerator cabinet, or reduce the insulation wall thickness to reduce the cabinet volume or refrigerator outer dimensions. You can do that. (For example, see Patent Document 1)

また、真空断熱パネルの側面には、冷蔵庫の凝縮パイプが入り込み得る形状の凹部があらかじめ陥没状に形成されている。(たとえば特許文献2参照)   Moreover, the recessed part of the shape into which the condensing pipe of a refrigerator can enter is formed in the side surface of the vacuum heat insulation panel previously by the depression shape. (For example, see Patent Document 2)

特開平9−269177号公報Japanese Patent Laid-Open No. 9-269177 特開昭61−168772号公報JP 61-168772 A

しかしながら、特許文献1に記載の従来の冷蔵庫では、冷蔵庫の外箱内面には、真空断熱パネルの縁部の外箱内側のみに凝縮パイプが取付けられているので、真空断熱パネルの設置部分に凝縮パイプを設置できず、ウレタン断熱材のみ使用した冷蔵庫に比べ、外箱内面に設置される部分の凝縮パイプの長さが短くなり冷蔵庫外部へ放出される凝縮熱量が減り、凝縮能力が低下し冷蔵庫の消費電力量を悪化させる問題点があった。   However, in the conventional refrigerator described in Patent Document 1, since the condensation pipe is attached only to the inner side of the outer box of the edge of the vacuum heat insulating panel on the inner surface of the outer box of the refrigerator, it is condensed on the installation part of the vacuum heat insulating panel. Compared to refrigerators that cannot install pipes and use only urethane insulation, the length of the condensation pipe on the inner surface of the outer box is shortened, reducing the amount of heat of condensation released to the outside of the refrigerator and reducing the condensation capacity. There was a problem of deteriorating power consumption.

また、特許文献2に記載の従来の冷蔵庫の真空断熱パネルでは、凝縮パイプを設置する凹部の位置については何も考慮していないので、凝縮パイプを設置する凹部の位置と真空断熱パネルの縁部との距離が接近していると、真空断熱パネルの端面において断熱性能が著しく低下(ヒートブリッジ)を生じるため、凝縮パイプより放出される凝縮熱が真空断熱パネルの断熱性能の低下により冷蔵庫の庫内側へ侵入し、冷蔵庫の消費電力量を悪化させる問題点があった。   Moreover, in the vacuum heat insulation panel of the conventional refrigerator of patent document 2, since nothing is considered about the position of the recessed part which installs a condensation pipe, the position of the recessed part which installs a condensation pipe, and the edge of a vacuum insulation panel If the distance between the two is close, the heat insulation performance will be significantly reduced (heat bridge) at the end face of the vacuum heat insulation panel, so the condensation heat released from the condensation pipe will decrease the heat insulation performance of the vacuum heat insulation panel. There was a problem of entering the inside and deteriorating the power consumption of the refrigerator.

また、真空断熱パネルと凝縮パイプとの間とのすきまについても何の考慮も行っていないので、真空断熱パネルと凝縮パイプとの間に隙間がない場合には、冷蔵庫組立時にアルミテープ等によって凝縮パイプを外箱内面に貼り付ける際に、凝縮パイプが変形していた場合、真空断熱パネルの凹部形状と異なる形で外箱内面に取り付けられるので、真空断熱パネル設置時に真空断熱パネルの凹部に凝縮パイプがうまく配置されず、真空断熱パネルが凝縮パイプの上に乗り上げるなどの問題が発生していた。   In addition, since no consideration is given to the clearance between the vacuum insulation panel and the condensation pipe, if there is no gap between the vacuum insulation panel and the condensation pipe, it is condensed with aluminum tape or the like when assembling the refrigerator. When the pipe is attached to the inner surface of the outer box, if the condensing pipe is deformed, it is attached to the inner surface of the outer box in a shape different from the concave shape of the vacuum heat insulating panel. The pipes were not placed well, causing problems such as the vacuum insulation panel riding on the condensation pipe.

真空断熱パネルが凝縮パイプ上に乗り上げると、真空断熱パネルが外箱内面より浮き上がり真空断熱パネルと外箱内面との間に多大の隙間が生じ、真空断熱パネルと外箱の接着剤等による固定が甘くなり、真空断熱パネルが外箱内面より剥がれたり、外箱内面より脱落を生じる問題があった。また、真空断熱パネルが外箱内面より浮き上がったことにより生じた隙間が真空断熱パネルと外箱内面の間に空気層を形成し冷蔵庫の断熱性能を低下させ冷蔵庫の消費電力量を悪化させる問題もあった。   When the vacuum insulation panel rides on the condensation pipe, the vacuum insulation panel rises from the inner surface of the outer box, creating a large gap between the vacuum insulation panel and the inner surface of the outer box. There was a problem that the vacuum insulation panel was peeled off from the inner surface of the outer box or dropped from the inner surface of the outer box. In addition, the gap caused by the vacuum insulation panel floating above the inner surface of the outer box forms an air layer between the vacuum insulation panel and the inner surface of the outer case, which lowers the heat insulation performance of the refrigerator and deteriorates the power consumption of the refrigerator. there were.

さらに、真空断熱パネル設置時に真空断熱パネルが凝縮パイプの上に乗り上げた部分にて、真空断熱パネルを接着剤等にて所定の位置に固定する際に真空断熱パネルを外箱側に押さえつけたり、真空断熱パネルの自重によって真空断熱パネルが外箱側に押さえつけられたり、ウレタン発泡充填時のウレタンの発泡圧力によって真空断熱パネルが外箱側に押さえられたりすることで、真空断熱パネルが凝縮パイプを押し潰し、凝縮パイプが変形し冷媒の流れの抵抗となり圧縮機の負荷が増大し冷蔵庫の消費電力量を悪化させたり、凝縮パイプが押し潰されて冷媒が流れにくくなったり、あるいは凝縮パイプが押し潰された部分より凝縮パイプが割れを生じ冷媒漏れを生じる恐れがあり、可燃性冷媒を使用する場合には、引火による冷蔵庫故障の原因となっていた。また、真空断熱パネルが凝縮パイプの上に乗り上げた部分にて外箱を変形させ冷蔵庫外観に凹凸ができ、冷蔵庫外箱の外観を悪化させて意匠性が悪化するという問題も発生していた。   Furthermore, when fixing the vacuum insulation panel in place with adhesive etc. at the part where the vacuum insulation panel rides on the condensation pipe when installing the vacuum insulation panel, pressing the vacuum insulation panel against the outer box side, The vacuum insulation panel is pressed against the outer box by the dead weight of the vacuum insulation panel, or the vacuum insulation panel is pressed to the outer box by the foaming pressure of urethane during urethane foam filling. Crushing and deformation of the condensing pipe cause resistance to the flow of refrigerant, increasing the load on the compressor and degrading the power consumption of the refrigerator, crushing the condensing pipe and making it difficult for the refrigerant to flow, or condensing pipe pushing There is a risk that the condensing pipe may crack from the crushed part, causing refrigerant leakage, and when using flammable refrigerant, the refrigerator may fail due to ignition. It has been a factor. In addition, the outer casing is deformed at the portion where the vacuum heat insulation panel rides on the condensing pipe, the outer appearance of the refrigerator is made uneven, and the appearance of the refrigerator outer casing is deteriorated to deteriorate the design.

この発明は、係る従来の技術的課題を解決するためになされたもので、真空断熱パネルをもちいた冷蔵庫において低消費電力量の冷蔵庫を提供することを目的とする。また、真空断熱材や凝縮パイプなどの変形などの少ない信頼性が高く、高性能の冷蔵庫を提供することを目的とする。また、真空断熱材や凝縮パイプなどの変形などによる冷蔵庫外箱などの変形の起こらない意匠性の優れた冷蔵庫を提供することを目的とする。また、可燃性冷媒を使用した場合も、ガス漏れなどの発生しない安全で信頼性の高い冷蔵庫を提供することを目的とするものである。   This invention was made in order to solve the conventional technical subject which concerns, and it aims at providing the refrigerator of low power consumption in the refrigerator which used the vacuum heat insulation panel. It is another object of the present invention to provide a high-performance refrigerator having high reliability with little deformation such as a vacuum heat insulating material or a condensation pipe. It is another object of the present invention to provide a refrigerator with excellent design that does not cause deformation of a refrigerator outer box or the like due to deformation of a vacuum heat insulating material or a condensation pipe. Another object of the present invention is to provide a safe and reliable refrigerator that does not cause gas leakage even when a flammable refrigerant is used.

この発明の冷蔵庫は、外箱と内箱間にウレタン断熱材を発泡充填することにより断熱箱体を構成し、断熱箱体内に冷媒用パイプを配設する冷蔵庫において、外箱内面に取付けられ、ウレタン断熱材中に埋設されるように配置される真空断熱パネルと、真空断熱パネルと外箱内面とが接触する部分の真空断熱パネルに冷媒用パイプの外径の1.2〜2倍程度の深さを有する溝部と、を設け、溝部に冷媒用パイプを配設したものである。   The refrigerator of the present invention constitutes a heat insulating box by foaming and filling urethane heat insulating material between the outer box and the inner box, and is attached to the inner surface of the outer box in the refrigerator in which the refrigerant pipe is disposed in the heat insulating box. About 1.2 to 2 times the outer diameter of the refrigerant pipe in the vacuum heat insulation panel disposed so as to be buried in the urethane heat insulating material, and the vacuum heat insulation panel in the portion where the vacuum heat insulation panel and the inner surface of the outer box are in contact with each other A groove portion having a depth, and a refrigerant pipe is disposed in the groove portion.

この発明の冷蔵庫は、凝縮能力を十分確保し、消費電力量の少ない省エネな冷蔵庫を提供することができる。   The refrigerator according to the present invention can provide an energy-saving refrigerator with sufficient condensing capacity and low power consumption.

実施の形態1.
この発明の実施の形態1について図1乃至図8の図面をもとに説明する。図1、図2は、この発明の実施の形態1を示す冷蔵庫の模式図である。図3は、この発明の実施の形態1を示す真空断熱パネルの模式図である。図4は、この発明の実施の形態1を示す真空断熱パネルの拡大模式図で、図3で○印で囲んだ部分の要部拡大図ある。図5は、この発明の実施の形態1を示す消費電力量と凝縮能力と関係図である。図6は、この発明の実施の形態1を示す断熱性能と真空断熱パネル端面からの距離と関係図である。図7、図8は、この発明の実施の形態1を示す冷蔵庫の模式図である。
Embodiment 1 FIG.
Embodiment 1 of the present invention will be described with reference to the drawings of FIGS. 1 and 2 are schematic views of a refrigerator showing Embodiment 1 of the present invention. FIG. 3 is a schematic diagram of a vacuum heat insulation panel showing Embodiment 1 of the present invention. FIG. 4 is an enlarged schematic view of the vacuum heat insulating panel showing Embodiment 1 of the present invention, and is an enlarged view of a main part of the portion surrounded by a circle in FIG. FIG. 5 is a relationship diagram between the power consumption and the condensing capacity according to Embodiment 1 of the present invention. FIG. 6 is a relationship diagram between the heat insulating performance and the distance from the end face of the vacuum heat insulating panel, showing the first embodiment of the present invention. 7 and 8 are schematic views of a refrigerator showing Embodiment 1 of the present invention.

図1において、1は冷蔵庫本体、2は冷蔵庫本体1の外郭を構成する外箱、3は冷蔵庫本体1の各貯蔵室(たとえば冷蔵室9、製氷室10、切替室11、野菜室12、冷凍室13など)を構成する内箱をそれぞれ示している。冷蔵庫本体1は、前面が開放された形状の鋼板である外箱2とABS等の樹脂材料より成形された内箱3との間にウレタン断熱材4を発泡充填し、かつ各貯蔵室を仕切壁5、6、7、8によって区画し冷蔵庫上部より冷蔵室9、冷蔵庫上部に配置された冷蔵室9の下部に並列に配置された製氷室10および切替室11、並列に配置された製氷室10と切替室11の下部に野菜室12、野菜室12の下部に冷凍室13が形成されている。   In FIG. 1, 1 is a refrigerator body, 2 is an outer box constituting the outer shell of the refrigerator body 1, and 3 is a storage room of the refrigerator body 1 (for example, a refrigerator room 9, an ice making room 10, a switching room 11, a vegetable room 12, a freezer Each of the inner boxes constituting the chamber 13 or the like is shown. The refrigerator main body 1 is foam-filled with a urethane heat insulating material 4 between an outer box 2 which is a steel plate having a shape with an open front and an inner box 3 formed of a resin material such as ABS, and partitions each storage chamber. Partitioned by walls 5, 6, 7, and 8, the refrigerator compartment 9 from the upper part of the refrigerator, the ice making room 10 and the switching room 11 arranged in parallel at the lower part of the refrigerator room 9 arranged at the upper part of the refrigerator, and the ice making room arranged in parallel 10 and the lower part of the switching room 11, the vegetable room 12 is formed, and the freezer room 13 is formed in the lower part of the vegetable room 12.

冷蔵庫本体1を構成する外箱2の側面のウレタン断熱材4側には冷媒用パイプ(たとえば凝縮パイプ14)および真空断熱パネル15が設けられている。凝縮パイプ14は、アルミテープ等により外箱2に貼り付けられている。真空断熱パネル15は、ホットメルト接着剤もしくは両面テープ等の固着手段により外箱2に貼り付けられている。なお、冷蔵室9の前面には右開き等の扉(図示せず)、製氷室10、切替室11、野菜室12、冷凍室13の前面には引出式等の扉(図示せず)が開閉可能に設けられている。   A refrigerant pipe (for example, a condensation pipe 14) and a vacuum heat insulation panel 15 are provided on the side of the urethane heat insulating material 4 on the side surface of the outer box 2 constituting the refrigerator body 1. The condensation pipe 14 is affixed to the outer box 2 with aluminum tape or the like. The vacuum heat insulation panel 15 is affixed to the outer box 2 by adhering means such as hot melt adhesive or double-sided tape. A door (not shown) such as a right opening is provided on the front surface of the refrigerator compartment 9, and a drawer door (not shown) is provided on the front surface of the ice making room 10, the switching room 11, the vegetable room 12, and the freezing room 13. It can be opened and closed.

この真空断熱パネル15は、例えば内側からポリエチレンもしくはポリプロピレン等からなる熱溶着層とアルミニウム層および表面保護層をラミネートした二枚のガスバリアフィルムの間にガラスウールもしくはシリカ等の微粉末を挿入し、所定の真空排気装置内において内部を真空とした後、ガスバリアフィルムの縁部を加熱して前記熱溶着層を相互に密着させ密封したものであり、全体として矩形板状をしている。   The vacuum heat insulation panel 15 is formed by inserting a fine powder such as glass wool or silica between two gas barrier films laminated with, for example, a heat welding layer made of polyethylene or polypropylene from the inside and an aluminum layer and a surface protective layer. The inside of the evacuation apparatus is evacuated and then the edges of the gas barrier film are heated so that the heat-welded layers are in close contact with each other and sealed, and has a rectangular plate shape as a whole.

図2においては、36は冷媒を圧縮する圧縮機、17は凝縮パイプ14とともに冷媒を凝縮するキャビネットパイプ、18は冷媒を減圧する毛細管、19は冷媒を蒸発させる冷却器、20は冷媒を圧縮機36に導く吸入パイプを表している。冷蔵庫本体1において、圧縮機36より吐出された冷媒は、側面及び上面に配置された冷媒用パイプである凝縮パイプ14、キャビネットパイプ17によって凝縮され、膨張機構である毛細管18にて減圧膨張し、冷却器19で蒸発し、吸入パイプ20を通って圧縮機36へ吸入される冷凍サイクルを構成している。冷却器19の近傍には冷気循環用ファン(図示せず)が設けられ、冷蔵庫本体1の庫内に冷気を送風している。   In FIG. 2, 36 is a compressor that compresses the refrigerant, 17 is a cabinet pipe that condenses the refrigerant together with the condensing pipe 14, 18 is a capillary that decompresses the refrigerant, 19 is a cooler that evaporates the refrigerant, and 20 is a compressor that compresses the refrigerant. The suction pipe leading to 36 is shown. In the refrigerator main body 1, the refrigerant discharged from the compressor 36 is condensed by the condenser pipe 14 and the cabinet pipe 17 which are refrigerant pipes arranged on the side surface and the upper surface, and is decompressed and expanded in the capillary tube 18 which is an expansion mechanism. A refrigeration cycle is formed which evaporates in the cooler 19 and is sucked into the compressor 36 through the suction pipe 20. A cool air circulation fan (not shown) is provided in the vicinity of the cooler 19 to blow cool air into the refrigerator body 1.

図3および図4において、21は真空断熱パネル15と外に凝縮パイプ14を配設するための空間である溝部を表している。溝部21は真空断熱パネル15に凹部形状として設けられ、この溝部21内に凝縮パイプ14を収納配置して真空断熱パネル15と外箱2との間に凝縮パイプ14を挟み込むように構成している。ここで、溝部21は真空断熱パネル15の両側端の端部より30mm以上はなれた所に複数列設けられている。   3 and 4, reference numeral 21 denotes a vacuum heat insulating panel 15 and a groove portion that is a space for disposing the condensation pipe 14 outside. The groove portion 21 is provided in the vacuum heat insulation panel 15 as a concave shape, and the condensation pipe 14 is accommodated in the groove portion 21 so that the condensation pipe 14 is sandwiched between the vacuum heat insulation panel 15 and the outer box 2. . Here, a plurality of rows of the groove portions 21 are provided at a distance of 30 mm or more from the end portions on both sides of the vacuum heat insulating panel 15.

また、本実施の形態では、真空断熱パネル15に溝部21を設けて凝縮パイプ14を溝部21内に収納することによりウレタン発泡充填時に真空断熱パネル15が凝縮パイプ14を外箱2に押し付けるが、外箱2に凝縮パイプ14の凹凸などの傷などをつけることを防止することができる。さらに、溝部21の断面形状は矩形(図4(a))、円形(図4(b))等でもよく、溝部21の深さは、例えば凝縮パイプ14の外径の1.2〜2.0倍程度(凝縮パイプの外径が4mm程度とすれば、溝部21の深さは4.8mm〜8mm程度)とすることで、外箱2に凝縮パイプ14の凹みなどの傷をつけることを防止することができる。さらに、溝部21の深さは真空断熱材15の厚さの70%程度以下とすれば溝部21がある部分の強度も確保でき、真空断熱材15が溝部21によって折れ曲がることなどがなくなり、信頼性の高い冷蔵庫が得られる。   Further, in the present embodiment, the vacuum heat insulation panel 15 presses the condensation pipe 14 against the outer box 2 at the time of urethane foam filling by providing the groove 21 in the vacuum heat insulation panel 15 and storing the condensation pipe 14 in the groove 21. It is possible to prevent the outer casing 2 from being damaged such as irregularities of the condensation pipe 14. Further, the cross-sectional shape of the groove 21 may be a rectangle (FIG. 4A), a circle (FIG. 4B), etc., and the depth of the groove 21 is, for example, 1.2-2. By making it about 0 times (if the outer diameter of the condensing pipe is about 4 mm, the depth of the groove 21 is about 4.8 mm to 8 mm), the outer box 2 can be damaged such as a dent of the condensing pipe 14. Can be prevented. Furthermore, if the depth of the groove portion 21 is about 70% or less of the thickness of the vacuum heat insulating material 15, the strength of the portion where the groove portion 21 is present can be secured, and the vacuum heat insulating material 15 will not be bent by the groove portion 21 and reliability will be improved. A high refrigerator can be obtained.

図5は、冷蔵庫における凝縮能力(凝縮パイプ長)と消費電力量の関係を示している。図において、横軸は凝縮能力を表し、縦軸は消費電力量を表している。凝縮パイプは長いほど凝縮能力が増加し、消費電力量を低減させることができる。これにより、真空断熱パネル15と外箱2との間に凝縮パイプ14を設けず凝縮パイプ14を短くして凝縮能力を低下させるよりも、真空断熱パネルに溝部21を設けて溝部21内に凝縮パイプ14を収納し凝縮パイプ14を長くした方が断熱性能もよくなり、凝縮能力を向上させることができ消費電力を低減できる。本実施の形態では、消費電力量が所定値以下となるように凝縮パイプ全長を決めるようにしており、凝縮パイプ全長が18m以上で消費電力量が規格値以下となることが分かる。   FIG. 5 shows the relationship between the condensation capacity (condensation pipe length) and power consumption in the refrigerator. In the figure, the horizontal axis represents the condensation capacity, and the vertical axis represents the power consumption. The longer the condensing pipe, the greater the condensing capacity and the lower the power consumption. As a result, the condensing pipe 14 is shortened without reducing the condensing capacity by not providing the condensing pipe 14 between the vacuum heat insulating panel 15 and the outer box 2. When the pipe 14 is accommodated and the condensing pipe 14 is lengthened, the heat insulating performance is improved, the condensing capacity can be improved, and the power consumption can be reduced. In the present embodiment, the total length of the condensing pipe is determined so that the power consumption is equal to or less than a predetermined value, and it can be seen that the power consumption is equal to or less than the standard value when the total length of the condensing pipe is 18 m or more.

図6は、真空断熱パネル15の端面から凝縮パイプ14を配置する溝部21までの距離と真空断熱パネル15の断熱性能の関係を示している。図において、横軸は、真空断熱パネル15の端面から溝部21までの距離を表し、縦軸は断熱能力を表している。真空断熱パネル15は、凝縮パイプ14とパネル端面との距離が短いと凝縮パイプよりの熱が端面より逃げるヒートブリッジを起こすため、所定の断熱性能が保てず断熱性能が著しく低下(ヒートブリッジ)することがわかる。   FIG. 6 shows the relationship between the distance from the end face of the vacuum heat insulation panel 15 to the groove 21 where the condensation pipe 14 is disposed and the heat insulation performance of the vacuum heat insulation panel 15. In the figure, the horizontal axis represents the distance from the end face of the vacuum heat insulation panel 15 to the groove portion 21, and the vertical axis represents the heat insulation capability. When the distance between the condensing pipe 14 and the panel end face is short, the vacuum heat insulating panel 15 causes a heat bridge in which heat from the condensing pipe escapes from the end face. Therefore, the predetermined heat insulating performance cannot be maintained and the heat insulating performance is significantly reduced (heat bridge). I understand that

本実施の形態では、凝縮パイプを配置する溝部のうちの真空断熱パネル端面に一番近い溝部と真空断熱パネル端面までの距離(図4参照)を所定の距離以上として、端面よりヒートブリッジして著しい断熱性能の低下が生じないようにいる。例えば本実施の形態では、断熱能力がヒートビリッジの影響のない場合の断熱能力の2倍程度、すなわち真空断熱パネルの断熱性能の低下を約1/2に抑えられるように端面から溝部までの所定距離を30mm以上としている。したがって断熱性能の低下が問題とならい高性能で信頼性の高い冷蔵庫を得ることができる。ここで、真空断熱パネルの端面から溝部までの距離を70mm以上とすれば、図6より断熱性能の低下がおこらず更なる高性能の冷蔵庫を得ることができる。   In the present embodiment, the distance (see FIG. 4) between the groove portion closest to the end face of the vacuum heat insulation panel and the end face of the vacuum heat insulation panel in the groove portion where the condensing pipe is disposed is set to a predetermined distance or more, and heat bridge is performed from the end face. There is no significant decrease in thermal insulation performance. For example, in the present embodiment, the heat insulation capacity is about twice the heat insulation capacity when there is no influence of the heat bridge, that is, a predetermined distance from the end face to the groove so as to suppress a decrease in the heat insulation performance of the vacuum heat insulation panel to about ½. The distance is 30 mm or more. Therefore, it is possible to obtain a high-performance and highly reliable refrigerator in which deterioration of heat insulation performance is not a problem. Here, if the distance from the end face of the vacuum heat insulation panel to the groove is set to 70 mm or more, the heat insulation performance is not lowered as compared with FIG. 6, and a further high performance refrigerator can be obtained.

なお、溝部の形状は図4(a)や図4(b)に示したように矩形や円形等でもよく、溝部深さは、例えば凝縮パイプの外径の1.2〜2倍程、外径φ4mmであれば溝部深さ4.8mm〜8mm程度確保すればよく、溝部幅も、例えば凝縮パイプの外径の1.2〜2倍程、外径φ4mmであれば溝部深さ4.8mm〜8mm程度確保すればよい。   The shape of the groove may be rectangular or circular as shown in FIGS. 4A and 4B, and the groove depth is, for example, about 1.2 to 2 times the outer diameter of the condensing pipe. If the diameter is φ4 mm, the groove depth should be about 4.8 mm to 8 mm, and the groove width is about 1.2 to 2 times the outer diameter of the condensing pipe. If the outer diameter is φ4 mm, the groove depth is 4.8 mm. What is necessary is just to secure about 8 mm.

図1〜図6では、真空断熱パネル15は冷蔵庫本体1の側面に設けた例を示したが、図7、図8に示すように、真空断熱パネル15と凝縮パイプ14を冷蔵庫本体1の天井部(図7)、あるいは冷蔵庫本体1の背面部(図8)に設けていてもよい。   1 to 6 show an example in which the vacuum heat insulation panel 15 is provided on the side surface of the refrigerator main body 1, the vacuum heat insulation panel 15 and the condensation pipe 14 are connected to the ceiling of the refrigerator main body 1 as shown in FIGS. 7 and 8. You may provide in a part (FIG. 7) or the back surface part (FIG. 8) of the refrigerator main body 1. FIG.

実施の形態2.
この発明の実施の形態2について、図9乃至図12の図面をもとに説明する。図9は、この発明の実施の形態2を示す冷蔵庫ウレタン注入時の模式図である。また、図10は、この発明の実施の形態2を示す真空断熱パネルの形状の模式図である。また、図11は、この発明の実施の形態2を示す冷蔵庫ウレタン注入時の模式図である。また、図12は、この発明の実施の形態2を示す冷蔵庫ウレタン注入時の模式図である。図において、図1〜図8と同等部分は、同一の符号を付して説明は省略する。
Embodiment 2. FIG.
A second embodiment of the present invention will be described with reference to FIGS. FIG. 9 is a schematic diagram at the time of refrigerator urethane injection showing Embodiment 2 of the present invention. FIG. 10 is a schematic diagram of the shape of the vacuum heat insulation panel showing the second embodiment of the present invention. FIG. 11 is a schematic diagram at the time of refrigerator urethane injection showing Embodiment 2 of the present invention. FIG. 12 is a schematic diagram at the time of refrigerator urethane injection showing Embodiment 2 of the present invention. In the figure, the same parts as those in FIGS.

図9、図10において、22は外箱2と内箱3との間にウレタン断熱材4のウレタン原液を注入する注入ヘッド、23は実施の形態1で説明した真空断熱パネル15に設けられたウレタン原液が注入される注入方向に配設された複数のウレタン注入用溝部であり、注入される注入方向に向って一端側より他端側まで設けられており、冷媒用パイプである凝縮パイプ14を収納する複数の溝部21と連通しており、本実施の形態では略直交している。ウレタン原液注入方向と同じ向きにあるウレタン注入用溝部23の一端側23aの近傍にウレタン原液を注入する注入ヘッド22を配置している。ウレタン原液を注入する注入ヘッド22より外箱2と内箱3との間のウレタン注入用溝部23内にウレタン原液注入方向と同じ向きにある溝部23aよりウレタンを注入してウレタンを発泡充填する。注入ヘッド22近傍に溝部23aを設けることにより、注入されたウレタンが溝部23aより進入し、凝縮パイプ14を収納する溝部21へ発泡充填され凝縮パイプ14から冷蔵庫本体1の庫内への熱侵入を低減することができる。   9 and 10, 22 is an injection head for injecting a urethane stock solution of the urethane heat insulating material 4 between the outer box 2 and the inner box 3, and 23 is provided in the vacuum heat insulating panel 15 described in the first embodiment. A plurality of urethane injection grooves arranged in the injection direction in which the urethane stock solution is injected, and are provided from one end side to the other end side in the injection direction to be injected, and a condensation pipe 14 serving as a refrigerant pipe. Are communicated with a plurality of groove portions 21 for storing the two, and are substantially orthogonal in the present embodiment. An injection head 22 for injecting the urethane stock solution is disposed in the vicinity of one end side 23a of the urethane injecting groove 23 that is in the same direction as the urethane stock solution injection direction. From the injection head 22 for injecting the urethane stock solution, urethane is injected into the urethane injection groove portion 23 between the outer box 2 and the inner box 3 from the groove portion 23a in the same direction as the urethane stock solution injection direction, and the urethane is foam-filled. By providing the groove portion 23a in the vicinity of the injection head 22, the injected urethane enters from the groove portion 23a and foams and fills into the groove portion 21 in which the condensation pipe 14 is accommodated, thereby preventing heat from entering the refrigerator main body 1 from the condensation pipe 14. Can be reduced.

なお、実施の形態1や図4で説明したように、溝部21やウレタン注入用溝部23の断面形状は矩形や円形等でもよく、また、溝部21の深さは、例えば凝縮パイプ14の外径の1.2〜2.0倍程度(凝縮パイプの外径が4mm程度とすれば、溝部21の深さは4.8mm〜8mm程度)とすればよい。   As described in the first embodiment and FIG. 4, the cross-sectional shape of the groove 21 and the urethane injecting groove 23 may be rectangular or circular, and the depth of the groove 21 is, for example, the outer diameter of the condensation pipe 14. About 1.2 to 2.0 times (if the outer diameter of the condensing pipe is about 4 mm, the depth of the groove 21 is about 4.8 mm to 8 mm).

また、図11、図12において、24は実施の形態1で説明した真空断熱パネル15に設けられたウレタン原液が注入される注入方向に配設された複数のウレタン注入用溝部であり、凝縮パイプ14を収納する溝部16と連通し、交差するように設けられ、ウレタンが注入される注入方向に向って一端側より他端側までウレタン注入方向に設けられており、凝縮パイプ14を収納する複数の溝部21と交差するごとに凝縮パイプ14の収納溝16の配設方向にウレタン注入用溝部24はその位置をずらして配設されている。   11 and 12, reference numeral 24 denotes a plurality of urethane injection grooves provided in the injection direction in which the urethane stock solution provided in the vacuum heat insulation panel 15 described in the first embodiment is injected, and a condensation pipe. 14 is provided in such a way that it communicates with and intersects with the groove portion 16 that accommodates 14, and is provided in the urethane injection direction from one end side to the other end side in the injection direction in which urethane is injected. The urethane injecting groove 24 is disposed with its position shifted in the direction in which the storage groove 16 of the condensing pipe 14 is disposed every time it intersects the groove 21.

すなわち、ウレタン注入用溝部24aを溝部16aまで設け、溝部16bから溝部16cまでの間のウレタン注入用溝部24bはウレタン注入用溝部24aよりもその配設位置が溝部16の配設方向にずれた位置に設けられている。同様に、ウレタン注入用溝部24cはウレタン注入用溝部24bよりも凝縮パイプ14を収納する溝部16(冷媒用パイプ14)の配設方向にその配設位置がずれている。ウレタン注入用溝部24は溝部16(冷媒用パイプ14)と交差(連通)するごとにその配設位置が溝部16(冷媒用パイプ14)方向に所定距離離れて配設されている。   That is, the urethane injecting groove 24a is provided up to the groove 16a, and the urethane injecting groove 24b between the groove 16b and the groove 16c is disposed at a position shifted in the disposing direction of the groove 16 from the urethane injecting groove 24a. Is provided. Similarly, the arrangement position of the urethane injection groove 24c is shifted in the arrangement direction of the groove 16 (refrigerant pipe 14) for housing the condensation pipe 14 from the urethane injection groove 24b. Each time the urethane injecting groove 24 intersects (communicates) with the groove 16 (refrigerant pipe 14), the position of the urethane injecting groove 24 is disposed at a predetermined distance in the direction of the groove 16 (refrigerant pipe 14).

したがって、注入ヘッド22より真空断熱パネル15の一端側のウレタン注入用溝部24より注入されたウレタンがウレタン注入用溝部24より進入し、溝部16内へ発泡充填され、また、ウレタン注入用溝部24の配設位置が溝部16の配設方向にずれた位置に配置されているため、ウレタン注入用溝部24に注入されたウレタンが溝部16を通って充填されるため、溝部16及びウレタン注入用溝部24全域にウレタンを発泡充填することができ、ボイドの少ないウレタン断熱材4を形成でき凝縮パイプ14から冷蔵庫1の庫内への熱侵入を低減することができる。   Therefore, the urethane injected from the urethane injection groove 24 on one end side of the vacuum heat insulation panel 15 from the injection head 22 enters from the urethane injection groove 24 and is foam-filled into the groove 16. Since the arrangement position is arranged at a position shifted in the arrangement direction of the groove portion 16, the urethane injected into the urethane injection groove portion 24 is filled through the groove portion 16, so that the groove portion 16 and the urethane injection groove portion 24 are filled. Urethane can be foam-filled in the entire area, the urethane heat insulating material 4 with less voids can be formed, and heat penetration from the condensation pipe 14 into the refrigerator 1 can be reduced.

なお、溝部16、24の断面形状は実施の形態1や図4で説明したように矩形や円形等でもよく、また、溝部16、24の深さは、例えば凝縮パイプ14の外径の1.2〜2.0倍程度(凝縮パイプの外径が4mm程度とすれば、溝部21の深さは4.8mm〜8mm程度)とすればよい。   Note that the cross-sectional shape of the grooves 16 and 24 may be a rectangle or a circle as described in the first embodiment or FIG. 4, and the depth of the grooves 16 and 24 is, for example, 1.. It may be about 2 to 2.0 times (if the outer diameter of the condensing pipe is about 4 mm, the depth of the groove 21 is about 4.8 mm to 8 mm).

実施の形態3.
この発明の実施の形態3について、図13乃至図16をもとに説明する。図13は、この発明の実施の形態3を示す冷蔵庫ウレタン注入時の模式図である。図14はこの発明の実施の形態3を示す冷蔵庫ウレタン注入時の模式図である。図15はこの発明の実施の形態3を示す冷蔵庫ウレタン注入時の模式図である。図16はこの発明の実施の形態2を示す真空断熱パネルの形状の模式図である。図において、図1〜図12と同等部分は同一の符号を付して説明は省略する。
Embodiment 3 FIG.
A third embodiment of the present invention will be described with reference to FIGS. FIG. 13 is a schematic view at the time of refrigerator urethane injection showing Embodiment 3 of the present invention. FIG. 14 is a schematic diagram at the time of refrigerator urethane injection showing Embodiment 3 of the present invention. FIG. 15 is a schematic diagram showing refrigerator urethane injection according to Embodiment 3 of the present invention. FIG. 16 is a schematic diagram of the shape of a vacuum heat insulation panel showing Embodiment 2 of the present invention. In the figure, the same parts as those in FIGS.

図13、図14において、25は実施の形態1で説明した真空断熱パネル15に設けられた溝部16上に少なくとも1箇所設けられたウレタン用穴部を示している。ウレタン原液を注入ヘッド22より外箱2と内箱3との間に注入しウレタンを発泡充填すると、注入されたウレタンがウレタン用穴部25より溝部16内へ進入するので、溝部16内で発泡充填され冷媒用パイプである凝縮パイプ14から冷蔵庫1の庫内への熱侵入を低減することができ、また、ウレタンがウレタン用穴部25より溝部16へ直接流入するため溝部16にボイドが発生することを抑えることができる。   13 and 14, reference numeral 25 denotes a urethane hole provided in at least one place on the groove 16 provided in the vacuum heat insulating panel 15 described in the first embodiment. When the urethane stock solution is injected between the outer box 2 and the inner box 3 from the injection head 22 and foamed and filled with urethane, the injected urethane enters the groove portion 16 from the urethane hole portion 25, and therefore foams in the groove portion 16. It is possible to reduce the heat intrusion from the filled condenser pipe 14 which is a refrigerant pipe into the refrigerator 1, and the urethane directly flows into the groove 16 from the urethane hole 25, so that a void is generated in the groove 16. Can be suppressed.

また、図15、図16において、26は実施の形態1で説明した真空断熱パネル15に複数列設けられた溝部16と溝部16との間の真空断熱材中に設けられ、溝部16に連通しているウレタン用穴部を示している。ウレタン原液を注入ヘッド22より外箱2と内箱3との間に注入し、ウレタンを発泡充填すると、注入されたウレタンがウレタン用穴部26より溝部16へ進入し、凝縮パイプ14を収納する溝部16内で発泡充填するので、凝縮パイプ14から冷蔵庫本体1の庫内への熱侵入を低減することができる。さらに、凝縮パイプ14と穴部26とが重なっていない(穴部26が凝縮パイプ上に無い)ので、凝縮パイプ14と内箱3との間にはウレタン用穴部26が存在せず真空断熱パネル15が配置されるため、凝縮パイプ14から冷蔵庫1の庫内への熱侵入をさらに低減することができる。   15 and 16, reference numeral 26 is provided in the vacuum heat insulating material between the groove portions 16 provided in a plurality of rows in the vacuum heat insulating panel 15 described in the first embodiment, and communicates with the groove portions 16. The urethane hole is shown. When the urethane stock solution is injected between the outer box 2 and the inner box 3 from the injection head 22 and foamed and filled with urethane, the injected urethane enters the groove 16 through the urethane hole 26 and accommodates the condensation pipe 14. Since foam filling is performed in the groove 16, heat intrusion from the condensation pipe 14 into the refrigerator main body 1 can be reduced. Further, since the condensing pipe 14 and the hole 26 do not overlap (the hole 26 is not on the condensing pipe), there is no urethane hole 26 between the condensing pipe 14 and the inner box 3, and vacuum insulation is provided. Since the panel 15 is disposed, the heat intrusion from the condensation pipe 14 into the refrigerator 1 can be further reduced.

真空断熱パネル15に設けられた穴部25、26は、例えば内側からポリエチレンもしくはポリプロピレン等からなる熱溶着層とアルミニウム層および表面保護層をラミネートした二枚のガスバリアフィルムに穴をプレス加工等によって開け、ガスバリアフィルムの穴部の縁部を加熱して前記熱溶着層を相互に密着させた後に、ガラスウールもしくはシリカ等の微粉末を挿入し、所定の真空排気装置内において内部を真空とした後、ガスバリアフィルムの縁部を加熱して前記熱溶着層を相互に密着させ密封することにより製造される。真空断熱パネル15に設けられた穴部は、矩形や円形等の形をしており、穴部開口面積が36mm2以上であるとウレタンが溝部16内に侵入しやすくボイドなどが発生せず高効率で信頼性が向上する。なお、上述した各実施の形態において、内部に連続気泡の発泡ポリウレタンを封入した真空断熱パネルでも差し支えない。   The holes 25 and 26 provided in the vacuum heat insulation panel 15 are formed by, for example, pressing a hole in two gas barrier films obtained by laminating a heat welding layer made of polyethylene or polypropylene, an aluminum layer, and a surface protective layer from the inside. After the edge of the hole of the gas barrier film is heated and the heat-welded layer is brought into close contact with each other, a fine powder such as glass wool or silica is inserted and the inside is evacuated in a predetermined vacuum exhaust device The gas barrier film is manufactured by heating the edges of the gas barrier film so that the heat-welded layers are in close contact with each other and sealed. The hole provided in the vacuum heat insulation panel 15 has a shape such as a rectangle or a circle. If the hole opening area is 36 mm 2 or more, urethane is easy to enter the groove 16 and voids are not generated. Reliability improves. In each of the above-described embodiments, a vacuum heat insulation panel in which open-cell foamed polyurethane is enclosed may be used.

以上、実施の形態1〜3で説明したように、この発明の冷蔵庫は、外箱2と内箱3間にウレタン断熱材4を発泡充填することにより断熱箱体を構成し、断熱箱体内に冷媒用パイプ(凝縮用パイプなど)14を配設する冷蔵庫において、外箱2内面に取付けられ、ウレタン断熱材4中に埋設されるように配置される真空断熱パネル15と、真空断熱パネル15と外箱2内面とが接触する部分の真空断熱パネル15に冷媒用パイプ14の外径の1.2〜2倍程度の深さを有する溝部16、21、23、24と、を設け、溝部16、21、23、24に冷媒用パイプ14を配設したので、冷蔵庫外箱に凹凸のない意匠性の優れた冷蔵庫を提供できる。また、冷媒用パイプである凝縮パイプと溝部との間にウレタン断熱材が充分注入されるので、断熱性能の低下がおこらない省エネルギーな冷蔵庫が得られる。   As described above in the first to third embodiments, the refrigerator according to the present invention forms a heat insulating box by foaming and filling the urethane heat insulating material 4 between the outer box 2 and the inner box 3, and the heat insulating box is formed in the heat insulating box. In a refrigerator in which a refrigerant pipe (condensation pipe or the like) 14 is disposed, a vacuum heat insulation panel 15 attached to the inner surface of the outer box 2 and disposed so as to be embedded in the urethane heat insulating material 4; Groove portions 16, 21, 23, 24 having a depth of about 1.2 to 2 times the outer diameter of the refrigerant pipe 14 are provided in the vacuum heat insulating panel 15 at the portion where the inner surface of the outer box 2 comes into contact. 21, 23, 24, the refrigerant pipe 14 is provided, so that a refrigerator with excellent design and no unevenness can be provided on the refrigerator outer box. Further, since the urethane heat insulating material is sufficiently injected between the condensing pipe, which is a refrigerant pipe, and the groove portion, an energy saving refrigerator in which the heat insulating performance does not deteriorate can be obtained.

また、この発明の冷蔵庫は、溝部は複数列で構成され、複数列の溝部に冷媒用パイプを複数列収納し、ウレタン断熱材を発泡充填させるようにしたので、凝縮能力を十分確保し、消費電力量の少ない省エネな冷蔵庫を提供することができる。特に消費電力量が所定値以下となるように凝縮パイプの全長を決めるようにしているので、消費電力量の小さい省エネルギーな冷蔵庫が得られる。   Further, in the refrigerator of the present invention, the groove portion is constituted by a plurality of rows, and a plurality of rows of refrigerant pipes are accommodated in the plurality of rows of groove portions, and the urethane heat insulating material is foam-filled. An energy-saving refrigerator with low power consumption can be provided. In particular, since the total length of the condensing pipe is determined so that the amount of power consumption is a predetermined value or less, an energy-saving refrigerator with a small amount of power consumption can be obtained.

また、この発明の冷蔵庫は、真空断熱パネルに設ける複数列の溝部を真空断熱材の端面より30mm以上離れた位置に設けるようにしたので、真空断熱パネルのヒートブリッジにより断熱性能低下し庫内へ無駄に熱が進入すること抑制し消費電力量の少ない省エネルギーな冷蔵庫を提供することができる。また、真空断熱パネルに設ける複数列の溝部を真空断熱材の端面より70mm以上離れた位置に設けるようにすれば、更なる断熱性能の低下の無い高性能で省エネルギーな冷蔵庫が得られる。   Moreover, since the refrigerator of this invention was made to provide the groove part of several rows provided in a vacuum heat insulation panel in the position 30 mm or more away from the end surface of a vacuum heat insulating material, heat insulation performance fell by the heat bridge of a vacuum heat insulation panel, and it is in a warehouse. It is possible to provide an energy-saving refrigerator that suppresses wasteful entry of heat and consumes less power. If a plurality of rows of grooves provided in the vacuum heat insulating panel are provided at positions 70 mm or more away from the end face of the vacuum heat insulating material, a high-performance and energy-saving refrigerator without further deterioration in heat insulating performance can be obtained.

また、この発明の冷蔵庫は、真空断熱パネルに設ける溝部の幅を、外箱に貼付けた冷媒用パイプの外径の1.2〜2倍程度にしたので、ウレタン断熱材が充分に溝部内に行き渡り断熱性能の良い省エネルギーな冷蔵庫が得られる。   Moreover, since the width | variety of the groove part provided in a vacuum heat insulation panel made the refrigerator of this invention about 1.2 to 2 times the outer diameter of the refrigerant | coolant pipe stuck on the outer box, urethane heat insulating material is fully in a groove part. An energy-saving refrigerator with good heat insulation performance can be obtained.

また、この発明の冷蔵庫は、外箱と内箱間にウレタン断熱材を注入するための注入口近傍の真空断熱材に設けられ、溝部に連通するウレタン注入用溝部を設けたので、ウレタン断熱材が凝縮パイプの設けられた真空断熱パネルの溝部に注入され、凝縮パイプから庫内へ無駄に熱が進入すること防いだ消費電力量の少ない省エネな冷蔵庫を提供することができる。   Further, the refrigerator of the present invention is provided with a vacuum heat insulating material in the vicinity of the inlet for injecting the urethane heat insulating material between the outer box and the inner box, and provided with a urethane injecting groove portion communicating with the groove portion. Is injected into the groove of the vacuum heat insulation panel provided with the condensation pipe, and an energy-saving refrigerator with less power consumption that prevents waste heat from entering the inside of the cabinet from the condensation pipe can be provided.

また、ウレタン注入用溝部24は溝部16(冷媒用パイプ14)と交差(連通)するごとにその配設位置が溝部16(冷媒用パイプ14)方向に所定距離離れて配設されているので、ウレタン注入用溝部24に注入されたウレタンが溝部16を通って充填されるため、溝部16及びウレタン注入用溝部24全域にウレタンを発泡充填することができ、ボイドの少ないウレタン断熱材4を形成でき凝縮パイプ14から冷蔵庫1の庫内への熱侵入を低減することができる。   Further, every time the urethane injection groove 24 intersects (communicates with) the groove 16 (refrigerant pipe 14), the arrangement position thereof is disposed at a predetermined distance in the direction of the groove 16 (refrigerant pipe 14). Since the urethane injected into the urethane injecting groove 24 is filled through the groove 16, the urethane can be foam-filled in the entire area of the groove 16 and the urethane injecting groove 24, and the urethane heat insulating material 4 with less voids can be formed. The heat intrusion from the condensation pipe 14 into the refrigerator 1 can be reduced.

また、この発明の冷蔵庫は、冷媒用パイプが配設される溝部上あるいは溝部間に設けられ、溝部にウレタン断熱材を導くための冷媒用パイプの外径と同等かあるいは冷媒用パイプの外径よりも大きな直径のウレタン用穴部を設けたので、ウレタン断熱材がウレタン用穴部を介して凝縮パイプの設けられた真空断熱パネルの溝部に導かれて注入され、凝縮パイプから庫内へ無駄に熱が進入すること防いだ消費電力量の少ない省エネルギーな冷蔵庫を提供することができる。   Further, the refrigerator of the present invention is provided on or between the groove portions where the refrigerant pipe is disposed, and is equal to the outer diameter of the refrigerant pipe for guiding the urethane heat insulating material to the groove portion or the outer diameter of the refrigerant pipe. Since a urethane hole with a larger diameter is provided, the urethane insulation material is introduced into the groove of the vacuum insulation panel where the condensation pipe is provided through the urethane hole, and is wasted from the condensation pipe into the cabinet. It is possible to provide an energy-saving refrigerator with low power consumption that prevents heat from entering.

また、この発明の冷蔵庫は、冷媒として炭化水素などの可燃性冷媒を使用するようにしても、凝縮パイプなどの冷媒用パイプが押しつぶされることなどがなく、冷媒用パイプに変形や破損などが起こらないので、ガス漏れなどの発生しない安全で信頼性の高い冷蔵庫を提供することができる。   In the refrigerator of the present invention, even when a flammable refrigerant such as hydrocarbon is used as the refrigerant, the refrigerant pipe such as the condensation pipe is not crushed, and the refrigerant pipe is not deformed or damaged. Therefore, it is possible to provide a safe and reliable refrigerator that does not cause gas leakage.

この発明の実施の形態1を示す冷蔵庫の模式図である。It is a schematic diagram of the refrigerator which shows Embodiment 1 of this invention. この発明の実施の形態1を示す冷蔵庫冷媒回路の模式図である。It is a schematic diagram of the refrigerator refrigerant circuit which shows Embodiment 1 of this invention. この発明の実施の形態1を示す真空断熱パネルの模式図である。It is a schematic diagram of the vacuum heat insulation panel which shows Embodiment 1 of this invention. この発明の実施の形態1を示す真空断熱パネルの拡大模式図である。It is an expansion schematic diagram of the vacuum heat insulation panel which shows Embodiment 1 of this invention. この発明の実施の形態1を示す消費電力量と凝縮能力と関係図である。It is a power consumption and condensation ability which show Embodiment 1 of this invention, and a related figure. この発明の実施の形態1を示す断熱性能と真空断熱パネル端面からの距離と関係図である。It is the heat insulation performance which shows Embodiment 1 of this invention, the distance from a vacuum heat insulation panel end surface, and a related figure. この発明の実施の形態1を示す冷蔵庫の模式図である。It is a schematic diagram of the refrigerator which shows Embodiment 1 of this invention. この発明の実施の形態1を示す冷蔵庫の模式図である。It is a schematic diagram of the refrigerator which shows Embodiment 1 of this invention. この発明の実施の形態2を示す冷蔵庫ウレタン注入時の模式図である。It is a schematic diagram at the time of refrigerator urethane injection | pouring which shows Embodiment 2 of this invention. この発明の実施の形態2を示す真空断熱パネルの形状の模式図である。It is a schematic diagram of the shape of the vacuum heat insulation panel which shows Embodiment 2 of this invention. この発明の実施の形態2を示す冷蔵庫ウレタン注入時の模式図である。It is a schematic diagram at the time of refrigerator urethane injection | pouring which shows Embodiment 2 of this invention. この発明の実施の形態2を示す冷蔵庫ウレタン注入時の模式図である。It is a schematic diagram at the time of refrigerator urethane injection | pouring which shows Embodiment 2 of this invention. この発明の実施の形態3を示す冷蔵庫ウレタン注入時の模式図である。It is a schematic diagram at the time of refrigerator urethane injection | pouring which shows Embodiment 3 of this invention. この発明の実施の形態3を示す冷蔵庫ウレタン注入時の模式図である。It is a schematic diagram at the time of refrigerator urethane injection | pouring which shows Embodiment 3 of this invention. この発明の実施の形態3を示す冷蔵庫ウレタン注入時の模式図である。It is a schematic diagram at the time of refrigerator urethane injection | pouring which shows Embodiment 3 of this invention. この発明の実施の形態3を示す真空断熱パネルの形状の模式図である。It is a schematic diagram of the shape of the vacuum heat insulation panel which shows Embodiment 3 of this invention.

符号の説明Explanation of symbols

1 冷蔵庫本体、2 外箱、3 内箱、4 ウレタン断熱材、5、6、7、8 仕切り壁、9 冷蔵室、10 製氷室、11 切替室、12 野菜室、13 冷凍室、14 冷媒用パイプ、15 真空断熱パネル、16 真空断熱パネルの溝部、17 キャビネットパイプ、18 毛細管、19 冷却器、20 吸入パイプ、21 真空断熱パネルの溝部、22 ウレタン原液注入ヘッド、23、24 真空断熱パネルの溝部、25、26 真空断熱パネルの穴部、36 圧縮機。   DESCRIPTION OF SYMBOLS 1 Refrigerator main body, 2 outer box, 3 inner box, 4 urethane insulation, 5, 6, 7, 8 partition wall, 9 refrigerator compartment, 10 ice making room, 11 switching room, 12 vegetable room, 13 freezer room, 14 for refrigerant Pipe, 15 Vacuum insulation panel, 16 Vacuum insulation panel groove, 17 Cabinet pipe, 18 Capillary tube, 19 Cooler, 20 Suction pipe, 21 Vacuum insulation panel groove, 22 Urethane stock injection head, 23, 24 Vacuum insulation panel groove , 25, 26 Holes in vacuum insulation panel, 36 Compressor.

Claims (7)

外箱と内箱間にウレタン断熱材を発泡充填することにより断熱箱体を構成し、前記断熱箱体内に冷媒用パイプを配設する冷蔵庫において、前記外箱内面に取付けられ、前記ウレタン断熱材中に埋設されるように配置される真空断熱パネルと、前記真空断熱パネルと前記外箱内面とが接触する部分の前記真空断熱パネルに前記冷媒用パイプの外径の1.2〜2倍程度の深さを有する溝部と、を設け、前記溝部に前記冷媒用パイプを配設したこと特徴とする冷蔵庫。 In the refrigerator in which a heat insulating box is formed by foaming and filling urethane heat insulating material between the outer box and the inner box, and the refrigerant pipe is disposed in the heat insulating box, the urethane heat insulating material is attached to the inner surface of the outer box. About 1.2 to 2 times the outer diameter of the refrigerant pipe in the vacuum heat insulation panel disposed so as to be embedded therein, and the vacuum heat insulation panel in a portion where the vacuum heat insulation panel and the inner surface of the outer box are in contact with each other A refrigerator having a depth of 5 mm, and the refrigerant pipe is disposed in the groove. 前記溝部は複数列で構成され、前記複数列の溝部に前記冷媒用パイプを複数列収納し、ウレタン断熱材を発泡充填させるようにしたことを特徴とする請求項1に記載の冷蔵庫 2. The refrigerator according to claim 1, wherein the groove portion includes a plurality of rows, the plurality of rows of the refrigerant pipes are accommodated in the plurality of rows of the groove portions, and a urethane heat insulating material is foam-filled. 前記真空断熱パネルに設ける複数列の溝部を前記真空断熱材の端面より、30mm以上離れた位置に設けるようにしたこと特徴とする請求項1又は請求項2に記載の冷蔵庫。 The refrigerator according to claim 1 or 2, wherein a plurality of rows of groove portions provided in the vacuum heat insulation panel are provided at positions separated by 30 mm or more from an end face of the vacuum heat insulating material. 真空断熱パネルに設ける前記溝部の幅を、外箱に貼付けた冷媒用パイプの外径の1.2〜2倍程度にしたこと特徴とする請求項1乃至請求項3のいずれかに記載の冷蔵庫。 The refrigerator according to any one of claims 1 to 3, wherein a width of the groove provided in the vacuum heat insulation panel is about 1.2 to 2 times an outer diameter of the refrigerant pipe attached to the outer box. . 外箱と内箱間にウレタン断熱材を注入するための注入口近傍の前記真空断熱材に設けられ、前記溝部に連通するウレタン注入用溝部を設けたこと特徴とする請求項1乃至請求項4のいずれかに記載の冷蔵庫。 5. A urethane injecting groove portion provided in the vacuum heat insulating material in the vicinity of an inlet for injecting a urethane heat insulating material between the outer box and the inner box and communicating with the groove portion. The refrigerator in any one of. 前記冷媒用パイプが配設される前記溝部上あるいは前記溝部間に設けられ、前記溝部にウレタン断熱材を導くための前記冷媒用パイプの外径と同等かあるいは前記冷媒用パイプの外径よりも大きな直径のウレタン用穴部を設けたこと特徴とする請求項1乃至請求項5のいずれかに記載の冷蔵庫。 The refrigerant pipe is provided on or between the grooves where the refrigerant pipe is disposed, and is equal to the outer diameter of the refrigerant pipe for guiding the urethane heat insulating material to the groove or larger than the outer diameter of the refrigerant pipe. The refrigerator according to any one of claims 1 to 5, wherein a urethane hole having a large diameter is provided. 冷媒として可燃性冷媒を使用するようにしたことを特徴とする請求項1乃至請求項6のいずれかに記載の冷蔵庫。 7. A refrigerator according to claim 1, wherein a flammable refrigerant is used as the refrigerant.
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WO2014103179A1 (en) * 2012-12-27 2014-07-03 パナソニック株式会社 Refrigerator
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