JP3493009B2 - refrigerator - Google Patents
refrigeratorInfo
- Publication number
- JP3493009B2 JP3493009B2 JP2001196060A JP2001196060A JP3493009B2 JP 3493009 B2 JP3493009 B2 JP 3493009B2 JP 2001196060 A JP2001196060 A JP 2001196060A JP 2001196060 A JP2001196060 A JP 2001196060A JP 3493009 B2 JP3493009 B2 JP 3493009B2
- Authority
- JP
- Japan
- Prior art keywords
- heat insulating
- insulating material
- vacuum heat
- box
- outer box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、真空断熱材を利用
した冷蔵庫に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator using a vacuum heat insulating material.
【０００２】[0002]
【従来の技術】近年、冷蔵庫の省エネルギー化や省スペ
ース化を狙いに、冷蔵庫の断熱性能を高める一手段とし
て、高断熱性能を有する真空断熱材を利用する方法があ
り、省エネルギーの要請が益々高まる今日では、硬質ウ
レタンフォームと比較して数倍から１０倍程度の断熱性
能を有する真空断熱材を適切な範囲内で最大限に利用す
ることにより断熱性能を向上させていくことが急務であ
るといえる。真空断熱材を利用した高い断熱性能を有す
る冷蔵庫を実現する手段としては、特開平６−１５９９
２２号公報、特開平３−２３３２８５号公報、特開平１
０−２０５９８９号公報に記載された手段などが知られ
ている。2. Description of the Related Art In recent years, for the purpose of energy saving and space saving of refrigerators, there is a method of using a vacuum heat insulating material having high heat insulating performance as one means for improving the heat insulating performance of the refrigerator, and the demand for energy saving increases more and more. Nowadays, it is an urgent task to improve the heat insulation performance by maximizing the use of a vacuum heat insulation material having a heat insulation performance of several times to ten times that of rigid urethane foam within an appropriate range. I can say. As means for realizing a refrigerator having high heat insulation performance using a vacuum heat insulating material, there is disclosed in Japanese Patent Laid-Open No. 6-1599.
No. 22, JP-A-3-233285, and JP-A-1
Means and the like described in JP-A-20205989 are known.
【０００３】図５には、特開平６−１５９９２２号公報
に記載されている冷蔵庫の側面断面図を示す。本例で
は、外箱１と内箱２で構成される空間全体を、成形可能
な袋状の紙材８で覆い、この紙材８内部に無機多孔質か
らなる充填材９を充填し、内外箱で囲まれた空間の形状
に沿って真空断熱材３が構成されている。本構成によ
り、内外箱間への真空断熱材の収納作業が容易に行える
と共に内外箱と真空断熱材との隙間を塞ぐ作業などが廃
止できるうえ、硬質ウレタンフォームを使用せず真空断
熱材のみで断熱箱体を構成できるため極めて高い断熱性
能を確保することができる。FIG. 5 shows a side sectional view of a refrigerator described in Japanese Patent Laid-Open No. 6-159922. In this example, the entire space formed by the outer box 1 and the inner box 2 is covered with a moldable bag-shaped paper material 8, and the inside of the paper material 8 is filled with a filler 9 made of an inorganic porous material. The vacuum heat insulating material 3 is configured along the shape of the space surrounded by the box. With this configuration, it is possible to easily store the vacuum insulation material between the inner and outer boxes and to eliminate the work of closing the gap between the inner and outer boxes and the vacuum insulation material, and use only the vacuum insulation material without using rigid urethane foam. Since a heat insulating box can be configured, extremely high heat insulating performance can be secured.
【０００４】また図６には、特開平１０−２０５９８９
号公報に記載されている冷蔵庫の水平断面図を示す。本
例では、外箱１と内箱２で構成される空間において、外
箱に接するように真空断熱材３を配設し、真空断熱材３
を配設した後で硬質ウレタンフォーム４を充填発泡する
構成としている。本構成では、平滑面からなる外箱に真
空断熱材を貼り付けるため、真空断熱材の面積が大きい
場合でも貼付け作業が容易である。また、硬質ウレタン
フォームと真空断熱材を複層するため、断熱箱体が強度
的に非常に弱くなるといった心配はなく、補強材の追加
などにより強度を高めることができる。Further, FIG. 6 shows Japanese Patent Laid-Open No. 10-205989.
Fig. 2 shows a horizontal sectional view of the refrigerator described in the publication. In this example, the vacuum heat insulating material 3 is disposed in contact with the outer box in the space formed by the outer box 1 and the inner box 2,
After arranging, the hard urethane foam 4 is filled and foamed. With this configuration, since the vacuum heat insulating material is attached to the outer box having a smooth surface, the attaching work is easy even when the area of the vacuum heat insulating material is large. In addition, since the rigid urethane foam and the vacuum heat insulating material are laminated, there is no fear that the heat insulating box will be extremely weak in strength, and the strength can be increased by adding a reinforcing material.
【０００５】また図７には、特開平３−２３３２８５号
公報に記載されている冷蔵庫の断熱壁の拡大断面図を示
す。本例では、外箱１と内箱２で構成される空間におい
て、内箱２に取り付けられた固定具５で支持される挟持
板６に真空断熱材３を挿入挟持し、残りの空間に硬質ウ
レタンフォームを充填し断熱箱体を構成している。本構
成では、放熱用の高温冷媒配管や扉の取っ手など、内外
箱で形成される空間において外箱側に配設する介在物を
問題なく配設できるだけでなく、硬質ウレタンフォーム
を充填する際に真空断熱材が移動することがないため、
真空断熱材の移動に伴う硬質ウレタンフォームの充填状
態の劣化を防止することが可能である。更に、硬質ウレ
タンフォームと真空断熱材を複層するため、断熱箱体が
強度的にみて大幅に弱くなる心配もない。FIG. 7 shows an enlarged sectional view of a heat insulating wall of a refrigerator described in Japanese Patent Laid-Open No. 3-233285. In this example, in the space formed by the outer box 1 and the inner box 2, the vacuum heat insulating material 3 is inserted and held by the holding plate 6 supported by the fixture 5 attached to the inner box 2, and the remaining space is hardened. It is filled with urethane foam to form a heat insulating box. With this configuration, not only can the high temperature refrigerant piping for heat dissipation, the handle of the door, etc., be disposed without problems on the outer box side in the space formed by the inner and outer boxes, but also when filling the rigid urethane foam. Since the vacuum insulation does not move,
It is possible to prevent deterioration of the filling state of the rigid urethane foam due to the movement of the vacuum heat insulating material. Further, since the rigid urethane foam and the vacuum heat insulating material are laminated, there is no fear that the heat insulating box body will be significantly weakened in terms of strength.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、従来例
のうち特開平６−１５９９２２号公報に記載されている
冷蔵庫では、硬質ウレタンフォームと比較して強度的に
劣る真空断熱材のみを使用した冷蔵庫であるため、断熱
性能は高いものの強度的には非常に弱くなるといった問
題があった。However, among the conventional examples, the refrigerator disclosed in Japanese Patent Laid-Open No. 6-159922 is a refrigerator that uses only a vacuum heat insulating material, which is inferior in strength to rigid urethane foam. Therefore, there is a problem that the heat insulation performance is high, but the strength is very weak.
【０００７】また、特開平１０−２０５９８９号公報に
記載されている冷蔵庫では、外箱外面積に対する真空断
熱材の被覆率が大きくなると、例えば冷蔵庫の構成要素
の一つである放熱用の高温冷媒配管や扉の取っ手など、
内外箱で形成される空間において外箱側に配設する部材
を配設するための場所が確保できなくなるといった問題
がある。また、真空断熱材を外箱に直接貼り付ける構成
としているため、冷蔵庫がシステムキッチンに組み込ま
れた場合や冷蔵庫の左右に家具などが置かれ、外箱に内
接されている高温冷媒配管からの放熱により冷蔵庫周囲
の外気温度が４０℃を超えるような場合には、真空断熱
性能の経時的な断熱性能の劣化が著しく、吸熱負荷量の
低減効果が大幅に低下してしまい、最悪の場合には冷蔵
庫が冷えない事態さえ想定されるという問題があった。
また、外箱に直接真空断熱材を貼り付けるため、外箱表
面に凹凸や波打ちが生じ外観の美しさを損ないやすいと
いう問題があった。Further, in the refrigerator described in Japanese Patent Laid-Open No. 10-205989, when the coverage of the vacuum heat insulating material with respect to the outer area of the outer box becomes large, for example, a high temperature refrigerant for heat radiation, which is one of the components of the refrigerator, is used. Such as piping and door handles
There is a problem that a space for arranging a member to be arranged on the outer box side cannot be secured in a space formed by the inner and outer boxes. In addition, since the vacuum heat insulating material is attached directly to the outer box, when the refrigerator is installed in the system kitchen or furniture is placed on the left and right of the refrigerator, the When the outside air temperature around the refrigerator exceeds 40 ° C due to heat radiation, the vacuum insulation performance is significantly deteriorated over time, and the effect of reducing the heat absorption load is significantly reduced. There was a problem that the refrigerator could not cool down.
Further, since the vacuum heat insulating material is directly adhered to the outer box, there is a problem that the outer box surface is uneven and corrugated, which tends to impair the appearance.
【０００８】また、特開平３−２３３２８５号公報に記
載されている冷蔵庫では、真空断熱材の周囲部分を挟持
板で支持するため、真空断熱材の外側と内側の両面にて
発泡する硬質ウレタンフォームの発泡圧差に耐えること
がでず、真空断熱材が反ってしまうことがある。その結
果、外箱或いは内箱と真空断熱材との隙間が局所的に極
めて薄くなり硬質ウレタンフォームが成形されないとい
った問題が生じ、時には本問題により生じた空隙が原因
して外箱表面に凹凸や波打ちが生じ外観の美しさを損な
ってしまうという問題があった。また、反りを防止する
ためには真空断熱材を小さく分割して挟持板で支持する
必要があるが、この場合には外箱表面に対する真空断熱
材の被覆率を高めることができない。更に、ＡＢＳから
なる１ｍｍ以下の薄い内箱に固定具を取り付けるため、
固定具の取り付け作業が安定しないといった問題もあ
る。Further, in the refrigerator described in Japanese Patent Laid-Open No. 3-233285, a rigid urethane foam that foams on both the outside and inside of the vacuum heat insulating material because the peripheral portion of the vacuum heat insulating material is supported by the sandwiching plate. The vacuum heat insulating material may warp because it cannot withstand the foaming pressure difference. As a result, the gap between the outer box or inner box and the vacuum heat insulating material becomes extremely thin locally, and the problem that the rigid urethane foam is not molded occurs, and sometimes the void caused by this problem causes unevenness on the outer box surface. There was a problem that waviness occurred and the appearance was impaired. Further, in order to prevent warpage, it is necessary to divide the vacuum heat insulating material into small pieces and support them with a sandwiching plate, but in this case, the coverage of the vacuum heat insulating material on the outer box surface cannot be increased. Furthermore, in order to attach the fixture to a thin inner box of 1 mm or less made of ABS,
There is also a problem that the fixing work of the fixture is not stable.
【０００９】本発明は、上記課題に鑑み、真空断熱材を
多く使用しても、箱体強度として問題がなく、かつ高い
断熱性能を確保した冷蔵庫を提供するものである。In view of the above-mentioned problems, the present invention provides a refrigerator having no problem in box strength even if a large amount of vacuum heat insulating material is used, and ensuring high heat insulating performance.
【００１０】[0010]
【課題を解決するための手段】この課題を解決するた
め、本発明は以下のような構成とする。In order to solve this problem, the present invention has the following constitution.
【００１１】 本発明の請求項１に係る冷蔵庫は、外箱
と内箱の間に硬質ウレタンフォームと真空断熱材とを備
え、真空断熱材を両側面，天面，背面，底面，および前
面の各面に配置し、外箱の表面積に対して真空断熱材の
被覆率が５０％を超え８０％以下であり、かつ前記両側
面および前記天面には放熱用の高温冷媒配管を外箱に接
するように配設した冷蔵庫において、高温冷媒配管によ
って外箱表面温度が外気温度よりも高くなる両側面およ
び天面においては、真空断熱材の表裏両面に均質なウレ
タン層が形成され、真空断熱材と外箱との距離が真空断
熱材と内箱との距離より小さく、前面側から背面側に向
かって真空断熱材と外箱との距離が徐々に大きくなるよ
うに、真空断熱材を外箱と内箱の中間で硬質ウレタンフ
ォームに埋設し、背面においては真空断熱材を外箱の背
面板に固定し、底面においては真空断熱材を内箱に固定
し、外箱と内箱の間に硬質ウレタンフォームを注入する
ための注入口を、両側面の真空断熱材と内箱との空間に
は直接注入されるが両側面の真空断熱材と外箱との空間
には直接注入されないように外箱背面に設けたものであ
る。A refrigerator according to claim 1 of the present invention includes a hard urethane foam and a vacuum heat insulating material between an outer box and an inner box, and the vacuum heat insulating material is provided on both side surfaces, a top surface, a back surface, a bottom surface, and a front surface. place on each side, the coverage of the vacuum heat insulating material is Ri der 80% or less than 50% of the surface area of the outer box, and the two side
Surface and the top surface are connected to the outer box with high temperature refrigerant piping for heat dissipation.
In the refrigerator, which was disposed so as to be, in the high-temperature refrigerant pipe
Hoyo both sides of the outer box surface temperature becomes higher than the outside air temperature I
The top and bottom surfaces of the vacuum insulation material on both sides
The tongue layer is formed, and the distance between the vacuum insulation and the outer box is
Less than the distance between the heat material and the inner box, facing from the front side to the back side
Once the distance between the vacuum insulation and the outer box gradually increases
Sea urchin, in the middle of the outer box and the inner box and the vacuum insulation material is embedded in rigid urethane foam, the back of the outer box and the vacuum heat insulating material in the back
It is fixed to the face plate, and the vacuum heat insulating material is fixed to the inner box at the bottom.
And inject hard urethane foam between the outer and inner boxes.
To the space between the vacuum insulation on both sides and the inner box.
Is injected directly, but the space between the vacuum insulation on both sides and the outer box
It is provided on the back of the outer box so that it will not be directly injected .
【００１２】 本発明によれば、高温冷媒配管からの放
熱により外気温度よりも外箱表面温度が高くなる両側面
および天面については、真空断熱材の表裏両面に均質な
ウレタン層が形成され、真空断熱材を外箱と内箱の中間
で硬質ウレタンフォームに埋設するようにしているた
め、真空断熱性能の経時的な断熱性能の劣化を最低限に
抑えることができる。また、真空断熱材を硬質ウレタン
フォームに埋設するため、外箱表面の凹凸や波打ちを抑
えることができ、外観の美しさを維持することができ
る。 According to the present invention, discharge from hot refrigerant piping
Both sides where the outer surface temperature becomes higher than the outside air temperature due to heat
And the top surface is uniform on both sides of the vacuum insulation.
A urethane layer is formed, and vacuum insulation is placed between the outer and inner boxes.
It is designed to be embedded in rigid urethane foam.
Therefore, deterioration of vacuum insulation performance over time is minimized.
Can be suppressed. Also, the vacuum insulation material is made of hard urethane
Since it is embedded in the foam, it suppresses unevenness and waviness on the outer box surface.
Can maintain the beauty of the appearance
It
【００１３】 また、外箱背面に設けた注入口から、冷
蔵庫の両側壁面に対して真空断熱材と内箱との空間側に
のみ硬質ウレタンフォームを直接注入するため、外箱ま
たは内箱と真空断熱材との間に形成される空間に対して
荒れや発泡不足を起こすことなく均質な硬質ウレタンフ
ォームを形成することができる。この結果、断熱性能の
低下を引き起こすことがなく省エネルギー効果を高める
ことができると共に、箱体強度をも維持することができ
る。 Further , a cooling port is provided from an inlet provided on the back of the outer box.
On the side of the space between the vacuum insulation material and the inner box for both side walls of the warehouse
Only the rigid urethane foam is directly injected, so
Or for the space formed between the inner box and the vacuum insulation
Homogeneous hard urethane foam without causing roughness or insufficient foaming
Can form a home. As a result,
Enhances energy saving effect without causing deterioration
In addition to being able to maintain the strength of the box
It
【００１４】 また、両側面および天面においては、外
箱背面に設けた注入口から硬質ウレタンフォームを直接
注入しない真空断熱材と外箱との空間距離を硬質ウレタ
ンフォームを直接注入する真空断熱材と内箱との空間距
離より小さくすることにより、両側面および天面の壁厚
を薄くすることができ、内容積効率が高く、省スペース
の要求にも応えた冷蔵庫を提供することができる。 On both sides and the top surface,
Hard urethane foam directly from the inlet provided on the back of the box
The space distance between the vacuum insulation that does not inject and the outer box is
The space between the vacuum insulation that directly injects the foam and the inner box
The wall thickness on both sides and the top surface is smaller than the separation
Can be made thin, high internal volume efficiency, space saving
It is possible to provide a refrigerator that meets the requirements of.
【００１５】 また、前面側から背面側に向かって、す
なわち、硬質ウレタンフォームが充填後に発泡していく
方向に沿って、両側面および天面の真空断熱材と外箱と
の距離を徐々に大きくしていくことにより、硬質ウレタ
ンフォームの充填後の発泡初期に比べ後半では発泡力が
弱くなるといった現象に対応することができ、発泡後半
でも硬質ウレタンフォームをよどみなく均一に発泡させ
ることができる。この結果、硬質ウレタンフォームに真
空断熱材を複層した場合の断熱性能を最大限に発揮する
ことができ、省エネルギー効果を高めることができる。 From the front side to the back side,
That is, the rigid urethane foam will foam after filling.
Along the direction, with vacuum insulation on both sides and the top and the outer box
By gradually increasing the distance of
Foaming power in the latter half compared to the initial foaming after filling foam
It is possible to deal with the phenomenon of weakening, and the latter half of foaming
However, the rigid urethane foam is foamed uniformly without stagnation.
You can As a result, the rigid urethane foam is truly
Maximize the heat insulation performance when using multiple layers of air insulation
Therefore, the energy saving effect can be enhanced.
【００１６】 また、背面においては真空断熱材を外箱
の背面板に固定したので、真空断熱材が冷却装置の配管
や冷却器の除霜水を排水するドレン管の邪魔にならない
ようにできると共に、背面板と真空断熱材を一体品とし
て組み立てることができ、製造工程上好ましい。また、
底面においては真空断熱材を内箱に固定したので、圧縮
機や凝縮器からの放熱により概ね４０℃を超える機械室
の温度の影響が真空断熱材に至り、真空断熱材の経時的
な断熱性能の低下が生じることを防止することができ
る。 On the back side, a vacuum heat insulating material is used for the outer box.
Since it is fixed to the back plate of the
Does not interfere with the drain pipe that drains defrosting water from the cooler and cooler
In addition to being able to
It is possible to assemble by assembling and is preferable in the manufacturing process. Also,
At the bottom, the vacuum insulation was fixed to the inner box, so it was compressed.
Machine room that exceeds approximately 40 ° C due to heat radiation from machines and condensers
Temperature influences the vacuum insulation material,
It is possible to prevent the deterioration of heat insulation performance.
It
【００１７】 また、真空断熱材を箱体内外の通過熱勾
配の大きい箇所から配設して、被覆率が外箱表面積の概
ね５０％を超える程度になれば冷蔵庫の吸熱負荷量を効
果的に抑えることができ、省エネルギー効果を高めるこ
とができる。一方、被覆率を８０％以下にとどめること
により、標準外の形態をした真空断熱材の使用や作業効
率の悪い部分への配設作業を強いられることによる真空
断熱材の吸熱量低減に対するコスト比率の急激な増加を
避けることができ、真空断熱材の利用価値が高い状態で
吸熱負荷量を効果的に抑え、省エネルギー効果を高める
ことができる。 In addition, the vacuum heat insulating material is used to pass heat inside and outside the box.
Install from a large area so that the coverage is approximately the surface area of the outer box.
If it exceeds 50%, the heat absorption load of the refrigerator will be effective.
It can be effectively suppressed and the energy saving effect can be enhanced.
You can On the other hand, keep the coverage below 80%
Allows the use of nonstandard vacuum insulation materials and work efficiency.
Vacuum due to forced placement work on inefficient parts
A rapid increase in the cost ratio to the reduction of heat absorption of heat insulation
Can be avoided and the value of vacuum insulation is high
Effectively suppress heat absorption load and enhance energy saving effect
be able to.
【００１８】 本発明の請求項２に係る冷蔵庫は、外箱
内側近傍に硬質ウレタンフォームと真空断熱材以外の介
在物としての取っ手がある扉においては、真空断熱材を
外箱と内箱の中間で硬質ウレタンフォームに埋設するよ
うに構成したものである。 The refrigerator according to claim 2 of the present invention is an outer box.
A rigid urethane foam and a vacuum insulation
Vacuum insulation should be used for doors that have handles as belongings.
It is embedded in a rigid urethane foam between the outer and inner boxes.
It is configured as follows.
【００１９】 本発明によれば、外箱内側近傍に硬質ウ
レタンフォームと真空断熱材以外の介在物としての取っ
手がある扉においては、真空断熱材を外箱と内箱の中間
で硬質ウレタンフォームに埋設することにより、真空断
熱材の被覆率を低減することなく真空断熱材の利用価値
が高い状態で吸熱負荷量を効果的に抑えることができ
る。 According to the present invention, a hard wedge is provided near the inside of the outer box.
Takes as inclusions other than letter foam and vacuum insulation
For doors with hands, use vacuum insulation between the outer and inner boxes.
By embedding it in hard urethane foam with
The utility value of vacuum insulation without reducing the coverage of thermal materials
The heat absorption load can be effectively suppressed when the
It
【００２０】 本発明の請求項３に係る冷蔵庫は、請求
項１または請求項２記載の冷蔵庫において、芯材と、前
記芯材を覆うガスバリア性フィルムからなる前記真空断
熱材において、前記ガスバリア性フィルムを構成する金
属箔層から成るフィルム面とアルミ蒸着層から成るフィ
ルム面のうち前記アルミ蒸着層から成るフィルム面を内
箱側に設けるように構成したものである。 The refrigerator according to claim 3 of the present invention claims
The refrigerator according to claim 1 or 2, wherein:
The vacuum disconnection consisting of a gas barrier film covering the core material
In a heat material, gold constituting the gas barrier film
A film surface consisting of a metal foil layer and a film consisting of a vapor-deposited aluminum layer.
The inside of the film surface consisting of the aluminum vapor deposition layer
It is configured to be provided on the box side.
【００２１】 本発明によれば、ガスバリア性能の低い
アルミ蒸着層を内箱側にして真空断熱材を配設すること
により、真空断熱材の経時的な断熱性能の劣化を抑制す
ることができる。更に、外箱表面温度が外気温度よりも
高くなることが想定される部分については、真空断熱材
を外箱と内箱の中間で硬質ウレタンフォームに埋設する
ため、なお一層経時的な断熱性能の劣化を抑制する効果
が高まる。 According to the present invention, the gas barrier performance is low.
Place the vacuum heat insulating material with the aluminum vapor deposition layer on the inner box side.
Suppresses the deterioration of the heat insulating performance of the vacuum heat insulating material over time.
You can Furthermore, the outer box surface temperature is higher than the outside air temperature.
For parts that are expected to be high, vacuum insulation
Is embedded in rigid urethane foam between the outer and inner boxes.
Therefore, the effect of further suppressing deterioration of heat insulation performance over time
Will increase.
【００２２】 本発明の請求項４に係る冷蔵庫は、請求
項１から請求項３のいずれか一項に記載の冷蔵庫におい
て、両側面および天面について、真空断熱材はスペーサ
により外箱に固定しており、背面側に設けたスペーサの
高さを前面側に設けたスペーサの高さ以上とするように
構成したものである。A refrigerator according to a fourth aspect of the present invention is the refrigerator according to any one of the first to third aspects , wherein the vacuum heat insulating material is a spacer for both side surfaces and the top surface.
It is fixed to the outer box by means of which the height of the spacer provided on the back side is made equal to or higher than the height of the spacer provided on the front side.
【００２３】本発明によれば、外箱と真空断熱材の間に
設けたスペーサにより真空断熱材を固定するばかりでな
く、冷蔵庫の背面側に設けたスペーサの高さを前面側に
設けたスペーサの高さ以上とするだけで、硬質ウレタン
フォームの発泡方向に沿って真空断熱材と外箱または内
箱との距離を徐々に大きくしていくことができる。ま
た、スペーサはホットメルト接着剤により外箱と真空断
熱材を強力に接着できるため、硬質ウレタンフォームの
発泡により真空断熱材が移動してしまうといった問題は
全く発生しない。更にホットメルト接着剤にて真空断熱
材を固定しているため、スペーサを適切な位置に配置す
ることができ、真空断熱材の表裏にて硬質ウレタンフォ
ームの発泡圧が異なる場合に起こり得る真空断熱材の反
りを解消することができる。その結果、均質な硬質ウレ
タンフォーム中に高い被覆率で真空断熱材を埋設するこ
とができ、省エネルギー効果を高めることができる。According to the present invention, not only the vacuum heat insulating material is fixed by the spacer provided between the outer box and the vacuum heat insulating material, but also the height of the spacer provided on the rear side of the refrigerator is provided on the front side. It is possible to gradually increase the distance between the vacuum heat insulating material and the outer box or the inner box along the foaming direction of the rigid urethane foam simply by setting the height to or more. Further, since the spacer can strongly bond the outer box and the vacuum heat insulating material with the hot melt adhesive, there is no problem that the vacuum heat insulating material moves due to foaming of the rigid urethane foam. Furthermore, since the vacuum heat insulating material is fixed with a hot melt adhesive, the spacer can be placed at an appropriate position, and the vacuum heat insulating can occur when the foaming pressure of the rigid urethane foam is different between the front and back of the vacuum heat insulating material. The warpage of the material can be eliminated. As a result, the vacuum heat insulating material can be embedded in the homogeneous rigid urethane foam with a high coverage, and the energy saving effect can be enhanced.
【００２４】 本発明の請求項５に係る冷蔵庫は、請求
項１から請求項４のいずれか一項に記載の冷蔵庫におい
て、両側面，天面，背面，底面，および前面に配設した
真空断熱材どうしの離間距離を、両側面および天面の真
空断熱材と外箱との距離以上にするように構成したもの
である。A refrigerator according to claim 5 of the present invention is the refrigerator according to any one of claims 1 to 4 , wherein vacuum insulation is provided on both side surfaces, a top surface, a back surface, a bottom surface, and a front surface. It is configured such that the distance between the materials is equal to or greater than the distance between the outer heat insulating material on both sides and the top surface and the outer box .
【００２５】 本発明によれば、真空断熱材どうしの離
間距離を、両側面および天面の真空断熱材と外箱との距
離以上、すなわち、硬質ウレタンフォームの充填可能と
される最低厚さ以上にすることにより、硬質ウレタンフ
ォームの流動性を維持することができるため、突き合わ
せ部分に均質なウレタン層を形成することができる。こ
れにより、硬質ウレタンフォームの荒れや発泡不足によ
る断熱性能の低下を引き起こすことがないばかりか、箱
体強度をも維持することができる。According to the present invention, the distance between the vacuum heat insulating materials is set to be the distance between the vacuum heat insulating material on both sides and the top surface and the outer box.
Since the fluidity of the rigid urethane foam can be maintained by setting the distance to be equal to or more than the distance, that is, the minimum thickness that allows the rigid urethane foam to be filled, a uniform urethane layer can be formed at the abutting portion. . As a result, not only does the deterioration of the heat insulation performance due to the roughness and insufficient foaming of the rigid urethane foam occur, but also the strength of the box body can be maintained.
【００２６】 本発明の請求項６に係る冷蔵庫は、請求
項１から請求項５のいずれか一項に記載の冷蔵庫におい
て、外箱の前面側折り曲げ端面と両側面に配設する真空
断熱材の前面側端面との端面間距離を、外箱と内箱の中
間で硬質ウレタンフォームに埋設した真空断熱材と外箱
との距離以上にするように構成したものである。A refrigerator according to a sixth aspect of the present invention is the refrigerator according to any one of the first to fifth aspects, further comprising a vacuum heat insulating material disposed on the front side bent end surface and both side surfaces of the outer box. The distance between the front end and the end face is the vacuum insulation material and the outer box which are buried in the rigid urethane foam between the outer box and the inner box .
It is configured to be more than the distance from .
【００２７】 本発明によれば、前記端面間距離を、外
箱と内箱の中間で硬質ウレタンフォームに埋設した真空
断熱材と外箱との距離以上、すなわち、硬質ウレタンフ
ォームの充填可能とされる最低厚さ以上にすることによ
り、硬質ウレタンフォームの流動性を維持することがで
きるため、前記端面間に均質なウレタン層を形成するこ
とができる。これにより、硬質ウレタンフォームの荒れ
や発泡不足による断熱性能の低下を引き起こすことがな
いばかりか、箱体強度をも維持することができる。According to the invention, the distance between the end face, the outer
Vacuum embedded in rigid urethane foam between the inner and inner boxes
Since the fluidity of the rigid urethane foam can be maintained by setting the distance between the heat insulating material and the outer box to be equal to or more than the minimum thickness that allows filling of the rigid urethane foam, it is possible to maintain a uniform flow between the end faces. A urethane layer can be formed. As a result, not only does the deterioration of the heat insulation performance due to the roughness and insufficient foaming of the rigid urethane foam occur, but also the strength of the box body can be maintained.
【００２８】[0028]
【００２９】[0029]
【００３０】 本発明の請求項７に係る冷蔵庫は、請求
項１から請求項６のいずれか一項に記載の冷蔵庫におい
て、両側面の真空断熱材と内箱との空間の距離を、背面
に設けた硬質ウレタンフォームの注入口径以上とするよ
うに構成したものである。A refrigerator according to a seventh aspect of the present invention is the refrigerator according to any one of the first to sixth aspects, wherein the distance between the vacuum heat insulating material on both sides and the inner box is It is configured to have a diameter equal to or larger than the injection port of the provided rigid urethane foam.
【００３１】本発明によれば、硬質ウレタンフォームを
注入する側の空間を注入口径以上にすることにより、液
状態で注入されるウレタンを発泡させることなく直接外
箱の前面折り曲げ端面部分にまで注入することができ
る。その結果、外箱と内箱との中間位置に配設されてい
る真空断熱材の外側と内側に対して同程度スピードで硬
質ウレタンフォームを発泡することができるため、真空
断熱材の表裏面において均質なウレタン層を形成し省エ
ネルギー効果を高めることができると共に、箱体強度を
も維持することができる。According to the present invention, the space on the side for injecting the rigid urethane foam is made equal to or larger than the injection port diameter, so that the urethane injected in the liquid state is directly injected into the front bent end surface portion of the outer box without foaming. can do. As a result, the rigid urethane foam can be foamed at the same speed on the outside and inside of the vacuum heat insulating material disposed in the intermediate position between the outer and inner boxes, so that the front and back surfaces of the vacuum heat insulating material can be foamed. A uniform urethane layer can be formed to enhance the energy saving effect, and at the same time, the box strength can be maintained.
【００３２】[0032]
【００３３】[0033]
【００３４】[0034]
【発明の実施の形態】以下、本発明の実施の形態につい
て、図１から図４を用いて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS.
【００３５】（実施の形態）実施の形態における一実施
例の冷蔵庫を図1から図４に示す。図１には冷蔵庫の正
面断面図を、図２には冷蔵庫の側面断面図を示す。図
１，図２において、２１は冷蔵庫本体であり、２２は扉
１０を含めた断熱箱体で、ＡＢＳなどの合成樹脂からな
る内箱２と鉄板などの金属からなる外箱１とから形成さ
れる空間２３に硬質ウレタンフォーム４と真空断熱材３
ａ、３ｂ、３ｃが複層構造で配設されている。断熱箱体
２２の製造にあたっては、真空断熱材３ａ〜３ｃをあら
かじめ外箱１または内箱２に直接または間接的に接着固
定したあと、硬質ウレタンフォーム４の原料を注入して
一体発泡を行う。(Embodiment) FIGS. 1 to 4 show a refrigerator according to an embodiment of the present invention. FIG. 1 shows a front sectional view of the refrigerator, and FIG. 2 shows a side sectional view of the refrigerator. In FIG. 1 and FIG. 2, 21 is a refrigerator main body, 22 is a heat insulating box including a door 10, and is formed from an inner box 2 made of synthetic resin such as ABS and an outer box 1 made of metal such as an iron plate. Hard urethane foam 4 and vacuum insulation 3 in space 23
a, 3b and 3c are arranged in a multilayer structure. In manufacturing the heat insulating box 22, the vacuum heat insulating materials 3a to 3c are directly or indirectly adhered and fixed to the outer box 1 or the inner box 2 in advance, and then the raw material of the rigid urethane foam 4 is injected to perform integral foaming.
【００３６】更に、断熱箱体２２は各温度帯の部屋に区
切られており、１２は冷凍室、１５は冷蔵室、１６は野
菜室を構成している。冷凍室１２は概ね−１５℃〜−２
５℃の冷凍領域に、冷蔵室１５，野菜室１６は概ね０〜
１０℃の冷蔵領域に設定される。１７は圧縮機、１８は
凝縮器、１９は冷却器であり冷却装置を構成している。
つまり、冷蔵庫本体２１は断熱箱体２２と、冷凍室１
２，冷蔵室１５，野菜室１６と、これら各温度帯の部屋
を冷却する圧縮機１７、凝縮器１８、冷却器１９を備え
た冷却装置によって構成されている。Further, the heat insulating box 22 is divided into rooms of respective temperature zones, 12 is a freezing room, 15 is a refrigerating room, and 16 is a vegetable room. The freezer compartment 12 is generally -15 ° C to -2.
In the freezing area of 5 ° C, the refrigerator compartment 15 and the vegetable compartment 16 are generally 0
It is set in the refrigeration area at 10 ° C. Reference numeral 17 is a compressor, 18 is a condenser, and 19 is a cooler, which constitutes a cooling device.
That is, the refrigerator main body 21 includes the heat insulating box 22 and the freezer compartment 1.
2. A cooling device including a refrigerating chamber 15, a vegetable chamber 16 and a compressor 17, a condenser 18, and a cooler 19 for cooling the chambers in these temperature zones.
【００３７】ここで、断熱箱体２２の側面と天面におけ
る真空断熱材３ａは、外箱１に接するように配設され冷
却装置の一部を構成する図示していない放熱用の高温冷
媒配管を避けて外箱１と内箱２の中間で硬質ウレタンフ
ォーム４に埋設されている。また扉１０においては、取
っ手１０ａを避けて扉の外表面と内表面の中間で硬質ウ
レタンフォーム４に真空断熱材３ａが埋設されている。
なお、真空断熱材３ａは、両面テープを貼り付けたスペ
ーサ２４により外箱１および扉１０の外表面に接着固定
している。また、真空断熱材３ｂは、断熱箱体２２の外
箱１の一部を構成する背面板２５にホットメルト接着剤
を用いて接着固定しており、真空断熱材３ｃは断熱箱体
２２の底面において内箱２に両面テープを用いて接着固
定している。The vacuum heat insulating material 3a on the side surface and the top surface of the heat insulating box 22 is arranged so as to contact the outer box 1 and constitutes a part of the cooling device. It is embedded in the hard urethane foam 4 between the outer box 1 and the inner box 2 while avoiding the above. Further, in the door 10, the vacuum heat insulating material 3a is embedded in the hard urethane foam 4 between the outer surface and the inner surface of the door while avoiding the handle 10a.
The vacuum heat insulating material 3a is adhesively fixed to the outer surfaces of the outer box 1 and the door 10 by a spacer 24 to which a double-sided tape is attached. Further, the vacuum heat insulating material 3b is bonded and fixed to the back plate 25 forming a part of the outer box 1 of the heat insulating box 22 using a hot melt adhesive, and the vacuum heat insulating material 3c is the bottom surface of the heat insulating box 22. In the above, the inner box 2 is adhesively fixed with double-sided tape.
【００３８】なお、真空断熱材３ａと外箱１との距離ｄ
１は内箱２との距離ｄ２と同等以上としており、断熱箱
体２２の両側面、天面、背面、底面に配設した真空断熱
材３ａ〜３ｃの突き合わせ距離ｄ３は前記距離ｄ１以上
を確保して構成している。The distance d between the vacuum heat insulating material 3a and the outer box 1
1 is equal to or more than the distance d2 to the inner box 2, and the abutting distance d3 of the vacuum heat insulating materials 3a to 3c arranged on both side surfaces, the top surface, the back surface, and the bottom surface of the heat insulating box body 22 is the distance d1 or more. Then configured.
【００３９】この結果、真空断熱材３ａ〜３ｃは、断熱
箱体２２の両側面，天面，背面，底面，および扉１０の
各面に万遍なく配置され、外箱１の表面積の８０％を占
めて配設されている。As a result, the vacuum heat insulating materials 3a to 3c are evenly arranged on both side surfaces, the top surface, the back surface, the bottom surface of the heat insulating box body 22 and each surface of the door 10, and 80% of the surface area of the outer box 1 is provided. It is occupy and arranged.
【００４０】ここで、断熱箱体２２の断熱壁厚は、扉１
０を除き、開口部の壁厚の薄い部分を含めて冷凍室１２
の冷凍領域において２５〜５０ｍｍの範囲に、また、冷
蔵室１５と野菜室１６の冷蔵領域においては２５〜４０
ｍｍの範囲にしており、この断熱壁厚中に厚さ１５ｍｍ
の真空断熱材３ａ〜３ｃを配設している。このため、外
箱１と内箱２の中間で硬質ウレタンフォーム４に埋設さ
れる真空断熱材３ａの外側の距離ｄ１は、硬質ウレタン
フォーム４の充填される厚みが最低でも５ｍｍ確保され
るよう配慮できており、真空断熱材３ｂの内側および真
空断熱材３ｃの外側における硬質ウレタンフォーム４の
充填される厚みは最低でも１０ｍｍ確保できている。Here, the thickness of the heat insulating wall of the heat insulating box 22 is equal to that of the door 1
Excluding 0, including the thin wall portion of the opening, the freezer compartment 12
25 to 50 mm in the freezing area, and 25 to 40 in the refrigerating area of the refrigerator compartment 15 and the vegetable compartment 16.
The thickness is within the range of 15 mm, and the thickness of this insulation wall is 15 mm.
The vacuum heat insulating materials 3a to 3c are provided. Therefore, the outer distance d1 of the vacuum heat insulating material 3a embedded in the hard urethane foam 4 between the outer box 1 and the inner box 2 is ensured so that the thickness of the hard urethane foam 4 filled is at least 5 mm. As a result, the thickness of the hard urethane foam 4 filled inside the vacuum heat insulating material 3b and outside the vacuum heat insulating material 3c can be at least 10 mm.
【００４１】また、図３には冷蔵庫側壁の断熱構造の拡
大図を示す。図３において、真空断熱材３ａは、グラス
ウールなどの無機繊維集合体３１を加熱乾燥後、アルミ
箔により構成された金属箔層フィルム３２ａとアルミ蒸
着を施した蒸着層フィルム３２ｂを貼り合わせた外被材
３２中に挿入し、内部を真空引きして開口部を封止する
ことにより形成されている。更に、ガスバリア性の高い
金属箔層フィルム３２ａが外箱１側に、蒸着層フィルム
３２ｂが内箱２側にくるように配設されている。なお、
真空断熱材３ｂ、３ｃについても外被材３２は金属箔層
フィルム３２ａと蒸着層フィルム３２ｂから構成され、
外箱１と内箱２に対して同様な位置関係にある。FIG. 3 shows an enlarged view of the heat insulating structure on the side wall of the refrigerator. In FIG. 3, the vacuum heat insulating material 3a is an outer cover obtained by heating and drying the inorganic fiber aggregate 31 such as glass wool, and then bonding the metal foil layer film 32a made of aluminum foil and the vapor deposition layer film 32b obtained by aluminum vapor deposition. It is formed by inserting it into the material 32 and drawing the inside vacuum to seal the opening. Further, the metal foil layer film 32a having a high gas barrier property is arranged so as to be on the outer box 1 side, and the vapor deposition layer film 32b is arranged on the inner box 2 side. In addition,
Also for the vacuum heat insulating materials 3b and 3c, the outer covering material 32 is composed of a metal foil layer film 32a and a vapor deposition layer film 32b,
The outer box 1 and the inner box 2 have the same positional relationship.
【００４２】ここで、無機繊維集合体３１の繊維径は
０．１μｍ〜１．０μｍの範囲のものを使用し、硬質ウ
レタンフォーム４の熱伝導率を０．０１５Ｗ／ｍＫとし
たときに、同様の測定基準による熱伝導率が０．００１
５Ｗ／ｍＫである断熱材として真空断熱材３ａ〜３ｃを
適用している。つまり、硬質ウレタンフォーム４に比べ
断熱性能が１０倍高い真空断熱材３ａ〜３ｃを適用して
いる。Here, when the fiber diameter of the inorganic fiber aggregate 31 is in the range of 0.1 μm to 1.0 μm and the thermal conductivity of the rigid urethane foam 4 is 0.015 W / mK, it is the same. Thermal conductivity is 0.001
The vacuum heat insulating materials 3a to 3c are applied as the heat insulating material of 5 W / mK. In other words, the vacuum heat insulating materials 3a to 3c having the heat insulating performance 10 times higher than the hard urethane foam 4 are applied.
【００４３】なお、外被材３２を構成している金属箔層
フィルム３２ａは、表面保護層としてポリエチレンテレ
フタレート（１２μｍ）、中間部にはアルミ箔（６μ
ｍ）、熱シール層が高密度ポリエチレン（５０μｍ）か
らなるラミネートフィルムから構成され、もう一方の面
である蒸着層フィルム３２ｂは、表面保護層がポリエチ
レンテレフタレート（１２μｍ）、中間部がエチレン−
ビニルアルコール共重合体樹脂組成物（１５μｍ）の内
側にアルミニウム蒸着を施したフィルム層，熱シール層
が高密度ポリエチレン（５０μｍ）からなるラミネート
フィルムで構成されている。更に、外被材３２には、耐
傷つき性を向上させるために表面保護層にナイロン樹脂
層を形成させている。The metal foil layer film 32a constituting the outer cover material 32 was made of polyethylene terephthalate (12 μm) as a surface protective layer, and an aluminum foil (6 μm) was used as an intermediate portion.
m), the heat-sealing layer is composed of a laminated film made of high-density polyethylene (50 μm), and the vapor deposition layer film 32b which is the other surface has a surface protective layer of polyethylene terephthalate (12 μm) and an intermediate portion of ethylene-
The vinyl alcohol copolymer resin composition (15 μm) has a film layer on which aluminum is vapor-deposited, and the heat-sealing layer is a laminated film made of high-density polyethylene (50 μm). Further, in the outer covering material 32, a nylon resin layer is formed as a surface protective layer in order to improve scratch resistance.
【００４４】また、図４には冷蔵庫の水平断面図を示
す。図４において、真空断熱材３ａを固定しているスペ
ーサ２４については、断熱箱体２２の背面側に取り付け
るスペーサ２４の高さが前面側に取り付けられたスペー
サ２４の高さよりも大となるように構成している。FIG. 4 shows a horizontal sectional view of the refrigerator. In FIG. 4, for the spacer 24 fixing the vacuum heat insulating material 3a, the height of the spacer 24 attached to the back side of the heat insulating box 22 is set to be larger than the height of the spacer 24 attached to the front side. I am configuring.
【００４５】また、断熱箱体２２に対する真空断熱材３
ａの前面側端面と外箱１の前面側折り曲げ端面とで構成
される端面間距離ｄ５は、真空断熱材３ａと外箱１との
距離ｄ１以上として構成している。Further, the vacuum heat insulating material 3 for the heat insulating box 22 is provided.
The distance d5 between the end surfaces formed by the front end surface of a and the front bent end surface of the outer box 1 is set to be a distance d1 or more between the vacuum heat insulating material 3a and the outer box 1.
【００４６】また、外箱１の一部を構成する背面板２５
には硬質ウレタンフォーム４を注入する注入口２６を設
けており、硬質ウレタンフォーム４が直接注入される真
空断熱材３ａと内箱２との距離ｄ７は、注入口２６の口
径以上としている。A back plate 25 forming a part of the outer box 1
Is provided with an injection port 26 for injecting the rigid urethane foam 4, and the distance d7 between the vacuum heat insulating material 3a into which the rigid urethane foam 4 is directly injected and the inner box 2 is equal to or larger than the diameter of the injection port 26.
【００４７】また、硬質ウレタンフォーム４を直接注入
しない真空断熱材３ａと外箱１との空間距離ｄ８は、硬
質ウレタンフォーム４が直接注入される空間距離ｄ７よ
り小としている。Further, the space distance d8 between the vacuum heat insulating material 3a in which the hard urethane foam 4 is not directly injected and the outer case 1 is set to be smaller than the space distance d7 in which the hard urethane foam 4 is directly injected.
【００４８】以上のような構成において、真空断熱材３
ａ〜３ｃを多量に配設して被覆率を極限まで高めようと
する場合、冷蔵庫本体２１の図示しない構成部品や特別
な構造がある部分（凹凸形状や配管，排水管の設置部な
ど）では特殊な形態の真空断熱材が必要になると共に、
真空断熱材の貼り付け作業性が非常に悪くなる。In the above structure, the vacuum heat insulating material 3
In the case where a large amount of a to 3c are arranged to increase the coverage to the maximum, in the parts (not shown) of the refrigerator main body 21 or where there is a special structure (uneven shape, pipe, installation part of drain pipe, etc.) Along with the need for a special form of vacuum insulation,
The workability of attaching the vacuum heat insulating material becomes very poor.
【００４９】このため、概ね外箱１の表面積の８０％を
超えて真空断熱材３ａ〜３ｃを配設しようとしても、使
用効率が悪く利用価値が飽和する箇所にまで真空断熱材
を貼り付けることになり、真空断熱材の投入に対する断
熱性能の向上効果が著しく低下することとなる。For this reason, even if the vacuum heat insulating materials 3a to 3c are to be disposed over 80% of the surface area of the outer box 1, the vacuum heat insulating material should be attached even to the places where the use efficiency is poor and the utility value is saturated. Therefore, the effect of improving the heat insulation performance with respect to the addition of the vacuum heat insulating material is significantly reduced.
【００５０】したがって、本実施の形態のように、外箱
１の外面積に対する真空断熱材３ａ〜３ｃの被覆率を８
０％にとどめることによって、真空断熱材３ａ〜３ｃを
多量に使用していくことによる効果が飽和せず、利用価
値が高い状態で吸熱負荷量を効果的に抑えることがで
き、省エネルギー効果を高めることができる。Therefore, as in the present embodiment, the coverage of the vacuum heat insulating materials 3a to 3c with respect to the outer area of the outer box 1 is set to 8.
By keeping it to 0%, the effect of using a large amount of the vacuum heat insulating materials 3a to 3c is not saturated, and the heat absorption load amount can be effectively suppressed in a state of high utility value, and the energy saving effect is enhanced. be able to.
【００５１】また、８０％の被覆率を実現するために
は、断熱箱体２２の両側面，天面，背面，底面，および
前面すなわち扉１０の各表面を概ね覆うことができる大
きなサイズの真空断熱材３ａ〜３ｃを配設することが好
ましく、真空断熱材の断熱効率が良くかつ貼り付け作業
性も向上する。In order to achieve a coverage of 80%, a vacuum of a large size that can substantially cover both side surfaces, the top surface, the back surface, the bottom surface, and the front surface of the heat insulating box 22, that is, each surface of the door 10. It is preferable to dispose the heat insulating materials 3a to 3c, so that the vacuum heat insulating material has good heat insulating efficiency and also improves the workability of attachment.
【００５２】以上の結果、真空断熱材３ａ〜３ｃを断熱
箱体２２の両側面，天面，背面，底面，および前面の各
面に配置し、外箱１の外面積に対する真空断熱材３ａ〜
３ｃの被覆率を８０％にとどめることによって、真空断
熱材３ａ〜３ｃを使用した冷蔵庫本体２１のイニシャル
コスト増加と省エネルギー化によるランニングコストの
低減とのバランスを確保することができ、ライフサイク
ルコストとしての価値を高めることができる。As a result of the above, the vacuum heat insulating materials 3a to 3c are arranged on both side surfaces, the top surface, the back surface, the bottom surface, and the front surface of the heat insulating box body 22, and the vacuum heat insulating materials 3a to 3a to the outer area of the outer box 1 are arranged.
By keeping the coverage of 3c at 80%, it is possible to secure a balance between an increase in the initial cost of the refrigerator main body 21 using the vacuum heat insulating materials 3a to 3c and a reduction in the running cost due to energy saving, and as a life cycle cost. The value of can be increased.
【００５３】なお、断熱箱体２２内外の通過熱勾配の大
きい箇所から真空断熱材３ａ〜３ｃを配設することによ
り被覆率が外箱１の外面積の概ね５０％を超える程度に
なれば断熱箱体の吸熱負荷量を効果的に抑え、省エネル
ギー効果を高めることができる。但し、本実施の形態で
は断熱箱体２２の外寸を高さ１８００ｍｍ，幅６７５ｍ
ｍ，奥行き６５０ｍｍとした。The vacuum heat insulating materials 3a to 3c are arranged from the inside and outside of the heat insulating box 22 where the passage heat gradient is large, so that the heat is insulated when the coverage exceeds about 50% of the outer area of the outer box 1. The heat absorption load of the box can be effectively suppressed, and the energy saving effect can be enhanced. However, in the present embodiment, the outer dimensions of the heat insulating box 22 are 1800 mm in height and 675 m in width.
m and depth 650 mm.
【００５４】また、断熱箱体２２の両側面及び天面に配
設する真空断熱材３ａは、外箱１と内箱２の中間で硬質
ウレタンフォーム４に埋設され、外箱１に接して配設さ
れ冷却装置の構成部品である図示しない放熱用の高温冷
媒配管を外箱１と真空断熱材３ａの間に設けている。本
構成により、高温冷媒配管から放熱される放熱量の内、
冷蔵庫本体２１内に侵入する放熱量を概ね１／３に低減
することができ、冷蔵庫全体の吸熱負荷量を効果的に低
減することができる。Further, the vacuum heat insulating material 3a provided on both side surfaces and the top surface of the heat insulating box 22 is embedded in the rigid urethane foam 4 between the outer box 1 and the inner box 2 and placed in contact with the outer box 1. An unillustrated high temperature refrigerant pipe for heat radiation, which is a component of the cooling device, is provided between the outer box 1 and the vacuum heat insulating material 3a. With this configuration, of the amount of heat released from the high temperature refrigerant pipe,
The amount of heat radiation entering the refrigerator body 21 can be reduced to about 1/3, and the heat absorption load of the entire refrigerator can be effectively reduced.
【００５５】また、冷蔵庫本体２１がシステムキッチン
に組み込まれた場合や、冷蔵庫本体２１の左右が家具に
よって塞がれた場合には、前記高温冷媒配管の放熱によ
り冷蔵庫本体２１の両側面および天面は概ね４０℃を越
える温度となり、真空断熱材３ａが外箱１に接着固定さ
れている場合には、真空断熱材３ａの温度が外箱１の温
度と同程度になり、真空断熱材３ａの断熱性能が経時的
に著しく低下するといった問題が生じる。これに対し、
真空断熱材３ａを外箱１と内箱２の中間で硬質ウレタン
フォーム４に埋設した場合には、外箱１の温度と比較し
て真空断熱材３ａの温度を約３℃以上低く保つことがで
きるため、経時的な断熱性能の低下を抑制することがで
きる。When the refrigerator main body 21 is incorporated in the system kitchen, or when the left and right sides of the refrigerator main body 21 are covered with furniture, both sides and the top surface of the refrigerator main body 21 are radiated by the heat radiation of the high temperature refrigerant pipe. Is approximately 40 ° C. or higher, and when the vacuum heat insulating material 3a is adhered and fixed to the outer case 1, the temperature of the vacuum heat insulating material 3a becomes approximately the same as the temperature of the outer case 1, and There arises a problem that the heat insulation performance remarkably decreases with time. In contrast,
When the vacuum heat insulating material 3a is embedded in the hard urethane foam 4 between the outer case 1 and the inner case 2, it is possible to keep the temperature of the vacuum heat insulating material 3a lower than the temperature of the outer case 1 by about 3 ° C. or more. Therefore, it is possible to suppress deterioration of the heat insulating performance with time.
【００５６】更に、真空断熱材３ａの外被材３２のう
ち、ガスバリア性に優れた金属箔層フィルム３２ａ側を
外箱１側に向けて真空断熱材３ａを配設することによ
り、なお一層、真空断熱材３ａの経時的な断熱性能の低
下を抑制することができる。Furthermore, by disposing the vacuum heat insulating material 3a with the metal foil layer film 32a side having excellent gas barrier property facing the outer box 1 side of the outer covering material 32 of the vacuum heat insulating material 3a, the It is possible to suppress deterioration of the heat insulating performance of the vacuum heat insulating material 3a with time.
【００５７】また、真空断熱材を外箱１に貼り付ける場
合に比べ、真空断熱材が外箱１と内箱２の中間に埋設さ
れている場合には、断熱箱体２２の外側と内側間の熱通
過投影面積をより内側で効果的に覆うことができるた
め、真空断熱材３ａの使用面積が同じでも実質的な被覆
率を合理的に高めることができる。In comparison with the case where the vacuum heat insulating material is attached to the outer box 1, when the vacuum heat insulating material is embedded between the outer box 1 and the inner box 2, the space between the outer side and the inner side of the heat insulating box 22 is reduced. Since the projected area of heat passage can be effectively covered inside, the substantial coverage can be reasonably increased even if the area of use of the vacuum heat insulating material 3a is the same.
【００５８】一方、扉１０に対しては、取っ手１０ａを
避けて真空断熱材３ａを中間層に埋設することにより、
大きな面積の真空断熱材３ａを貼り付けることで被覆率
を高めることができ、吸熱負荷量を効果的に低減するこ
とができる。On the other hand, with respect to the door 10, by embedding the vacuum heat insulating material 3a in the intermediate layer while avoiding the handle 10a,
By attaching the vacuum heat insulating material 3a having a large area, the coverage can be increased, and the heat absorption load amount can be effectively reduced.
【００５９】更に、真空断熱材３ａの外表面全周が硬質
ウレタンフォーム４と密着するため、外箱１や内箱２と
真空断熱材を直接接触させる場合に生じる剥離によって
断熱箱体２２の強度が低下するといった問題が生じな
い。Furthermore, since the entire outer surface of the vacuum heat insulating material 3a is in close contact with the rigid urethane foam 4, the strength of the heat insulating box body 22 due to the peeling that occurs when the vacuum heat insulating material is brought into direct contact with the outer box 1 or the inner box 2. Does not occur.
【００６０】更に、真空断熱材３ａは外箱１や扉１０の
外表面に直接接触しないため、外箱１や扉１０の外表面
と真空断熱材３ａの隙間に硬質ウレタンフォーム４の発
泡剤が凝集することがない。この結果、環境温度の変化
によって発泡剤が膨張，収縮して外観を変形させること
がない。故に、外から目立ちやすい断熱箱体２２の側面
や扉１０の外観を損ねることなく、冷蔵庫の品位や価値
を維持することができる。Further, since the vacuum heat insulating material 3a does not directly contact the outer surface of the outer box 1 or the door 10, the foaming agent of the hard urethane foam 4 is provided in the gap between the outer surface of the outer box 1 or the door 10 and the vacuum heat insulating material 3a. Does not aggregate. As a result, the foaming agent does not expand or contract due to the change in the environmental temperature and the appearance is not deformed. Therefore, the quality and value of the refrigerator can be maintained without impairing the side surface of the heat insulating box 22 and the exterior of the door 10 that are easily noticeable from the outside.
【００６１】なお、外箱１と内箱２との中間への真空断
熱材の配置は、可能であれば断熱箱体２２の全域に亘っ
てもよいが、本実施の形態では敢えて、断熱箱体２２の
背面に配設する真空断熱材３ｂは背面板２５に、また断
熱箱体２２の底面に配設する真空断熱材３ｃは内箱２に
接着固定している。The vacuum heat insulating material may be arranged in the middle of the outer case 1 and the inner case 2 over the entire area of the heat insulating box 22 if possible, but in the present embodiment, the heat insulating box is intentionally taken. The vacuum heat insulating material 3b arranged on the back surface of the body 22 is fixed to the back plate 25, and the vacuum heat insulating material 3c arranged on the bottom surface of the heat insulating box body 22 is fixed to the inner box 2.
【００６２】これは、断熱箱体２２の背面に真空断熱材
３ｂを配設する場合には、真空断熱材３ｂが冷却装置の
配管や冷却器１９の除霜水を排水するドレン管の邪魔に
なるといった問題に配慮すると共に、背面板２５と真空
断熱材３ｂを一体品として組み立てる方が製造工程上好
ましいなどの理由からである。This is because when the vacuum heat insulating material 3b is provided on the back surface of the heat insulating box 22, the vacuum heat insulating material 3b interferes with the piping of the cooling device and the drain pipe for draining defrost water of the cooler 19. This is because it is preferable in terms of manufacturing process to assemble the back plate 25 and the vacuum heat insulating material 3b as an integrated product in consideration of such a problem.
【００６３】また、断熱箱体２２の底面に配設する真空
断熱材３ｃを内箱２に接着固定しているのは、圧縮機１
７や凝縮器１８からの放熱により概ね４０℃を超える機
械室２０の温度の影響が真空断熱材３ｃに至り、真空断
熱材の経時的な断熱性能の低下が生じることを防止する
ためである。The vacuum heat insulating material 3c disposed on the bottom surface of the heat insulating box 22 is fixed to the inner box 2 by adhesion.
This is to prevent the influence of the temperature of the machine room 20 which exceeds approximately 40 ° C. from reaching the vacuum heat insulating material 3c due to heat radiation from the condenser 7 and the condenser 18 and causing the deterioration of the heat insulating performance of the vacuum heat insulating material with time.
【００６４】一方、真空断熱材３ａの外側に構成してい
る硬質ウレタンフォーム４の厚さｄ１は、内側に構成し
ている硬質ウレタンフォーム４の厚さｄ２以下の５ｍｍ
を確保し、真空断熱材３ｂ、３ｃの外側または内側に構
成している硬質ウレタンフォームの厚さは１０ｍｍを確
保している。このため硬質ウレタンフォーム４の発泡時
の流動性を妨げることなく、フォームの荒れや充填不良
による断熱性能の低下を引き起こすことはなく、断熱箱
体の強度低下を招くこともない。On the other hand, the thickness d1 of the hard urethane foam 4 formed on the outside of the vacuum heat insulating material 3a is 5 mm which is less than the thickness d2 of the hard urethane foam 4 formed on the inside.
And the thickness of the hard urethane foam formed on the outside or inside of the vacuum heat insulating materials 3b and 3c is 10 mm. Therefore, the flowability of the rigid urethane foam 4 at the time of foaming is not impeded, the heat insulation performance is not deteriorated due to the roughness of the foam and the filling failure, and the strength of the heat insulation box is not deteriorated.
【００６５】また、断熱箱体２２の両側面、天面、背面
および底面に配設する真空断熱材３ａ〜３ｃの突き合わ
せ距離ｄ３は、真空断熱材３ａ外側の硬質ウレタンフォ
ーム４の厚さｄ１以上としているため、突き合わせ部に
おける硬質ウレタンフォーム４の発泡時の流動性を妨げ
ることなく、フォームの荒れや充填不良による断熱性能
の低下や、断熱箱体２２の強度低下を生じることはな
い。Further, the abutting distance d3 of the vacuum heat insulating materials 3a to 3c arranged on both side surfaces, the top surface, the back surface and the bottom surface of the heat insulating box 22 is not less than the thickness d1 of the hard urethane foam 4 outside the vacuum heat insulating material 3a. Therefore, the flowability of the rigid urethane foam 4 at the abutting portion at the time of foaming is not hindered, and the insulation performance is not deteriorated due to the roughness of the foam or defective filling, and the strength of the heat insulation box 22 is not reduced.
【００６６】以上のように、真空断熱材３ａ〜３ｃの厚
みを確保し真空断熱材の断熱性能を十分に発揮させなが
ら、かつ硬質ウレタンフォーム４の断熱性能をも堅持し
ているため、複層断熱壁としての断熱性能を効果的に高
めることができ、特に、庫内外の温度勾配が大きい冷凍
温度領域においては一層効果的である。As described above, the thickness of the vacuum heat insulating materials 3a to 3c is ensured and the heat insulating performance of the vacuum heat insulating material is sufficiently exhibited, and at the same time, the heat insulating performance of the rigid urethane foam 4 is firmly maintained. The heat insulating performance as the heat insulating wall can be effectively enhanced, and it is particularly effective in the freezing temperature region where the temperature gradient inside and outside the refrigerator is large.
【００６７】また、冷凍室１２の断熱壁厚を５０ｍｍ以
下にすることで、比較的容積比率の小さい冷凍室１２に
対して真空断熱材３ａ〜３ｃを適用して外観レイアウト
に影響を与えないで容積効率を増加させることにも活用
でき、真空断熱材の利用価値をより高めることができ
る。By setting the heat insulating wall thickness of the freezing compartment 12 to 50 mm or less, the vacuum insulating materials 3a to 3c are applied to the freezing compartment 12 having a relatively small volume ratio without affecting the external layout. It can also be used to increase the volumetric efficiency, and the utility value of the vacuum heat insulating material can be further enhanced.
【００６８】また、冷蔵室１５と野菜室１６の断熱壁厚
を４０ｍｍ以下にすることで、庫内外の温度勾配が比較
的小さい冷蔵温度領域においても、真空断熱材３ａ〜３
ｃの適用により容積効率の向上の効果を得ることができ
る。Further, by setting the heat insulation wall thickness of the refrigerating compartment 15 and the vegetable compartment 16 to 40 mm or less, even in the refrigerating temperature region where the temperature gradient inside and outside the refrigerator is relatively small, the vacuum heat insulating materials 3a to 3a.
The effect of improving the volumetric efficiency can be obtained by applying c.
【００６９】また、真空断熱材３ａの内容積への貢献分
を内容積の拡大に利用せずに外容積のコンパクト化に転
用すれば冷蔵庫本体２１の設置スペースの省スペース化
に繋げることができる。Further, if the contribution of the vacuum heat insulating material 3a to the internal volume is not utilized for expanding the internal volume but is diverted to the compact external volume, it is possible to save the installation space of the refrigerator main body 21. .
【００７０】なお、ドア１０の断熱壁厚をこれらの範囲
内に敢えて規定しないのは、庫内の収納物を支えるドア
１０の強度確保や取っ手１０ａやデザイン上の凹凸部の
存在を考慮すべき場合があるからである。It is to be noted that the thickness of the heat insulating wall of the door 10 is not intentionally defined within these ranges in consideration of ensuring the strength of the door 10 for supporting the items stored in the refrigerator and the existence of the handle 10a and the uneven portion on the design. This is because there are cases.
【００７１】なお、真空断熱材３ａ〜３ｃの厚みは１０
ｍｍ程度までなら外被材３２を介しての所謂ヒートブリ
ッジの影響が比較的大きくならず単品の断熱性能も概ね
維持できるので、期待通りの断熱効果を得ることができ
る。一方、真空断熱材３ａ〜３ｃの厚みを増して断熱効
果を高めることも可能であるが、この場合には硬質ウレ
タンフォーム４の流動性を阻害する危険性があるため、
むしろ厚みを分割して他の面に展開した方が合理的であ
る。よって、真空断熱材３ａ〜３ｃの厚みは１０ｍｍ〜
１５ｍｍが適切である。The thickness of the vacuum heat insulating materials 3a to 3c is 10
If it is up to about mm, the effect of so-called heat bridge through the outer covering material 32 is not relatively large, and the heat insulating performance of a single item can be generally maintained, so that the expected heat insulating effect can be obtained. On the other hand, it is possible to increase the thickness of the vacuum heat insulating materials 3a to 3c to enhance the heat insulating effect, but in this case, there is a risk of impeding the fluidity of the rigid urethane foam 4,
Rather, it is more rational to divide the thickness and deploy it on other surfaces. Therefore, the thickness of the vacuum heat insulating materials 3a to 3c is 10 mm to
15 mm is suitable.
【００７２】一方、硬質ウレタンフォーム４を断熱箱体
２２の背面板２５に設けた注入口より注入することによ
り、断熱箱体２２の両側面に配設した真空断熱材３ａの
周囲に直接ウレタンを注入することができる。このと
き、硬質ウレタンフォーム４を直接注入する真空断熱材
３ａと内箱２との距離ｄ７を硬質ウレタンフォーム４の
注入口径ｄ６以上の幅とすることにより、液状で注入さ
れる硬質ウレタンフォーム４を断熱箱体２２の前面部に
直接注入することができ、注入後の発泡プロセスを円滑
に進めることができる。On the other hand, by injecting the rigid urethane foam 4 from the inlet provided on the back plate 25 of the heat insulating box 22, urethane is directly applied around the vacuum heat insulating material 3a provided on both side surfaces of the heat insulating box 22. Can be injected. At this time, by setting the distance d7 between the vacuum heat insulating material 3a into which the rigid urethane foam 4 is directly injected and the inner box 2 to be a width equal to or larger than the injection port diameter d6 of the rigid urethane foam 4, the rigid urethane foam 4 injected in a liquid state can be obtained. It can be directly injected into the front surface of the heat insulating box 22, and the foaming process after injection can be smoothly performed.
【００７３】また、断熱箱体２２に対する真空断熱材３
ａの前面側端面と外箱１の前面側折り曲げ端面との端面
間距離ｄ５を真空断熱材３ａと外箱１との距離ｄ１以上
とすることにより、液状で注入された硬質ウレタンフォ
ーム４を滞留なく真空断熱材３ａの表裏に発泡させるこ
とができる。Further, the vacuum heat insulating material 3 for the heat insulating box 22 is provided.
By setting the inter-face distance d5 between the front end surface of a and the front bent end surface of the outer box 1 to be equal to or more than the distance d1 between the vacuum heat insulating material 3a and the outer box 1, the hard urethane foam 4 injected in a liquid state is retained. Instead, it can be foamed on the front and back of the vacuum heat insulating material 3a.
【００７４】また、真空断熱材３ａと硬質ウレタンフォ
ーム４を直接注入しない外箱１との空間距離を発泡方向
に沿って徐々に大きくしていくことにより、発泡力が弱
まる発泡プロセスの後半においても充填不足などの問題
を生じることはない。In the latter half of the foaming process, the foaming force is weakened by gradually increasing the space distance between the vacuum heat insulating material 3a and the outer case 1 into which the hard urethane foam 4 is not directly injected along the foaming direction. It does not cause problems such as insufficient filling.
【００７５】また、発泡方向に沿って真空断熱材３ａと
外箱１との空間距離を徐々に大きくする方法としては、
真空断熱材３ａを固定しているスペーサ２４の高さを調
整するだけでよく、簡便な方法で硬質ウレタンフォーム
の流動性を確保することができる。As a method of gradually increasing the spatial distance between the vacuum heat insulating material 3a and the outer case 1 along the foaming direction,
Only by adjusting the height of the spacer 24 fixing the vacuum heat insulating material 3a, it is possible to secure the fluidity of the rigid urethane foam by a simple method.
【００７６】この結果、注入後の硬質ウレタンフォーム
４は、真空断熱材３ａの表裏を同じ程度の発泡スピード
で発泡され、真空断熱材３ａの表裏共に均質な硬質ウレ
タンフォーム４を形成することができる。As a result, the hard urethane foam 4 after injection is foamed on the front and back surfaces of the vacuum heat insulating material 3a at the same foaming speed, and it is possible to form the hard urethane foam 4 that is uniform on both the front and back surfaces of the vacuum heat insulating material 3a. .
【００７７】更に、この場合には、真空断熱材３ａの表
裏にかかる発泡圧が同程度であるため、真空断熱材３ａ
が発泡圧の差によって反ってしまうといった問題も生じ
ないため、真空断熱材３ａの表裏において硬質ウレタン
フォーム４の充填不足による断熱性能や強度の低下を生
じることがなく、剥離など外観上問題となる現象を引き
起こすこともない。Further, in this case, since the foaming pressure applied to the front and back of the vacuum heat insulating material 3a is about the same, the vacuum heat insulating material 3a is
Does not warp due to the difference in foaming pressure, so that the heat insulation performance and strength are not deteriorated due to insufficient filling of the rigid urethane foam 4 on the front and back of the vacuum heat insulating material 3a, and peeling causes a problem in appearance. It does not cause a phenomenon.
【００７８】また、硬質ウレタンフォームを直接注入し
ない外箱１と真空断熱材３ａとの距離ｄ８を直接注入す
る内箱側の距離ｄ７より小さくすることにより、断熱箱
体２２の両側面の壁厚を前述した壁厚以内にとどめ、壁
厚を薄くして容積効率の向上や冷蔵庫本体２１の設置ス
ペースの省スペース化を達成することができる。Further, by making the distance d8 between the outer case 1 in which the rigid urethane foam is not directly injected and the vacuum heat insulating material 3a smaller than the distance d7 in the inner case side where the direct injection is made, the wall thickness of both side surfaces of the heat insulating box 22 is reduced. Can be kept within the wall thickness described above, and the wall thickness can be reduced to improve the volume efficiency and save the installation space of the refrigerator main body 21.
【００７９】なお、本発明の形態では、真空断熱材３ａ
〜３ｃの熱伝導率を硬質ウレタンフォーム４の熱伝導率
を０．０１５Ｗ／ｍＫとしたときに０．００１５と１／
１０のものを適用したが、無機繊維集合体３１の繊維径
の異なるものを採用するなどし、０．００１０Ｗ／ｍＫ
〜０．００３０Ｗ／ｍＫとして、１／１５〜１／５の比
率の範囲としてもよい。これは、硬質ウレタンフォーム
４と真空断熱材３ａ〜３ｃとの複層断熱壁厚が比較的薄
い場合において、硬質ウレタンフォーム４の流動性を阻
害しないために真空断熱材３ａ〜３ｃの厚みを薄くした
としても複層断熱壁としての断熱性能を効果的に発揮す
るためである。更に、高被覆率化を実現するために断熱
箱体２２の比較的壁厚の薄い箇所にも真空断熱材３ａ〜
３ｃを配設し、省エネルギー効果を期待通り発揮させる
ためである。In the embodiment of the present invention, the vacuum heat insulating material 3a is used.
When the thermal conductivity of the rigid urethane foam 4 is 0.015 W / mK, 0.0015 and 1 /
Although 10 of the above are used, the inorganic fiber aggregates 31 having different fiber diameters are adopted, and thus 0.0010 W / mK
˜0.0030 W / mK, and a ratio range of 1/15 to 1/5 may be used. This is because the thickness of the vacuum heat insulating materials 3a to 3c is reduced in order not to impede the fluidity of the hard urethane foam 4 when the multilayer heat insulating wall thickness of the hard urethane foam 4 and the vacuum heat insulating materials 3a to 3c is relatively thin. This is because even if it is done, the heat insulating performance as a multi-layer heat insulating wall is effectively exhibited. Further, in order to realize a high coverage, the vacuum heat insulating material 3a to
This is because 3c is provided and the energy saving effect is exhibited as expected.
【００８０】[0080]
【発明の効果】以上のように請求項１の発明によれば、
高温冷媒配管からの放熱により外気温度よりも外箱表面
温度が高くなる両側面および天面については、真空断熱
材の表裏両面に均質なウレタン層が形成され、真空断熱
材を外箱と内箱の中間で硬質ウレタンフォームに埋設す
るようにしているため、真空断熱性能の経時的な断熱性
能の劣化を最低限に抑えることができる。また、真空断
熱材を硬質ウレタンフォームに埋設するため、外箱表面
の凹凸や波打ちを抑えることができ、外観の美しさを維
持することができる。また、外箱背面に設けた注入口か
ら、冷蔵庫の両側壁面に対して真空断熱材と内箱との空
間側にのみ硬質ウレタンフォームを直接注入するため、
外箱または内箱と真空断熱材との間に形成される空間に
対して荒れや発泡不足を起こすことなく均質な硬質ウレ
タンフォームを形成することができる。この結果、断熱
性能の低下を引き起こすことがなく省エネルギー効果を
高めることができると共に、箱体強度をも維持すること
ができる。また、両側面および天面においては、外箱背
面に設けた注入口から硬質ウレタンフォームを直接注入
しない真空断熱材と外箱との空間距離を硬質ウレタンフ
ォームを直接注入する真空断熱材と内箱との空間距離よ
り小さくすることにより、両側面および天面の壁厚を薄
くすることができ、内容積効率が高く、省スペースの要
求にも応えた冷蔵庫を提供することができる。また、前
面側から背面側に向かって、すなわち、硬質ウレタンフ
ォームが充填後に発泡していく方向に沿って、両側面お
よび天面の真空断熱材と外箱との距離を徐々に大きくし
ていくことにより、硬質ウレタンフォームの充填後の発
泡初期に比べ後半では発泡力が弱くなるといった現象に
対応することができ、発泡後半でも硬質ウレタンフォー
ムをよどみなく均一に発泡させることができる。この結
果、硬質ウレタンフォームに真空断熱材を複層した場合
の断熱性能を最大限に発揮することができ、省エネルギ
ー効果を高めることができる。また、背面においては真
空断熱材を外箱の背面板に固定したので、真空断熱材が
冷却装置の配管や冷却器の除霜水を排水するドレン管の
邪魔にならないようにできると共に、背面板と真空断熱
材を一体品として組み立てることができ、製造工程上好
ましい。また、底面においては真空断熱材を内箱に固定
したので、圧縮機や凝縮器からの放熱により概ね４０℃
を超える機械室の温度の影響が真空断熱材に至り、真空
断熱材の経時的な断熱性能の低下が生じることを防止す
ることができる。また、外箱表面積に対する真空断熱材
の被覆率が５０％を超え８０％以下であることにより真
空断熱材の利用価値が高い状態で吸熱負荷量を効果的に
抑えて省エネルギー効果を高めることができるという有
利な効果が得られる。As described above, according to the invention of claim 1,
Due to heat radiation from the high temperature refrigerant pipe, the surface of the outer box is higher than the outside air temperature.
Vacuum insulation for both sides and the top where the temperature rises
A uniform urethane layer is formed on both front and back surfaces of the material, and vacuum insulation is performed.
The material is embedded in the rigid urethane foam between the outer and inner boxes.
As a result, the vacuum insulation performance is improved over time.
It is possible to minimize the deterioration of performance. Also, vacuum break
Since the heat material is embedded in the rigid urethane foam, the surface of the outer box
The unevenness and undulation of the surface can be suppressed and the appearance is maintained.
Can have. Also, is it the injection port provided on the back of the outer box?
The vacuum insulation material and the inner box on both sides of the refrigerator.
Since the rigid urethane foam is directly injected only between the sides,
In the space formed between the outer or inner box and the vacuum insulation
On the other hand, it is a uniform hard Ure without causing roughness or insufficient foaming.
Tan foam can be formed. This results in insulation
Energy saving effect without causing performance degradation
It can be increased and the box strength is maintained.
You can Also, on both sides and on the top,
Injection of rigid urethane foam directly from the injection port provided on the surface
Do not change the space distance between the vacuum insulation
The space distance between the vacuum insulation that directly injects the foam and the inner box
By reducing the wall thickness on both sides and the top surface.
Space-saving, high internal volume efficiency, and space-saving
It is possible to provide a refrigerator that meets the demand. Also before
From the front side to the back side, that is, the hard urethane foil
The sides of the foam along the direction that foam foams after filling.
And gradually increase the distance between the vacuum insulation on the top and the outer box.
By filling the rigid urethane foam,
The phenomenon that the foaming power becomes weaker in the latter half of the foam than in the first half
It is possible to respond, and even in the latter half of foaming, hard urethane foam
The foam can be uniformly foamed without stagnation. This conclusion
As a result, when multiple layers of vacuum insulation are applied to rigid urethane foam
Can maximize the heat insulation performance of the
-The effect can be enhanced. Also true on the back
Since the air insulation is fixed to the back plate of the outer box, the vacuum insulation is
For the drain pipe that drains the defrosting water of the cooling device piping and cooler
Can be kept out of the way, back plate and vacuum insulation
The material can be assembled as an integrated product, which is favorable for the manufacturing process.
Good Also, at the bottom, vacuum insulation is fixed to the inner box.
As a result, the heat radiated from the compressor and the condenser is about 40 ° C.
The temperature of the machine room exceeds the maximum temperature
Prevents deterioration of heat insulation performance of the heat insulating material over time.
You can Further, since the coverage of the vacuum heat insulating material with respect to the surface area of the outer box is more than 50% and 80% or less, the heat absorption load amount can be effectively suppressed and the energy saving effect can be enhanced in a state where the vacuum heat insulating material has a high utility value. advantageous effects that say that is obtained.
【００８１】 また、請求項２の発明によれば、外箱内
側近傍に硬質ウレタンフォームと真空断熱材以外の介在
物としての取っ手がある扉においては、真空断熱材を外
箱と内箱の中間で硬質ウレタンフォームに埋設すること
により、真空断熱材の被覆率を低減することなく真空断
熱材の利用価値が高い状態で吸熱負荷量を効果的に抑え
ることができる。また、外箱表面の凹凸や波打ちを抑え
ることができる。 According to the invention of claim 2, inside the outer box
Interposition other than rigid urethane foam and vacuum insulation near the side
For doors with handles as objects, remove the vacuum insulation.
Buried in rigid urethane foam between the box and the inner box
Thereby, the heat absorption load amount can be effectively suppressed in a state where the utilization value of the vacuum heat insulating material is high without reducing the coverage of the vacuum heat insulating material. In addition, Ru it is possible to suppress the waviness of the outer box surface irregularities and.
【００８２】また、請求項３の発明によれば、ガスバリ
ア性能の低いアルミ蒸着層を内箱側にして真空断熱材を
配設することにより、真空断熱材の経時的な断熱性能の
劣化を抑制することができる。更に、外箱表面温度が外
気温度よりも高くなることが想定される部分について
は、真空断熱材を外箱と内箱の中間で硬質ウレタンフォ
ームに埋設するため、なお一層経時的な断熱性能の劣化
を抑制する効果が高まる。According to the third aspect of the invention, by disposing the vacuum heat insulating material on the inner box side of the aluminum vapor deposition layer having a low gas barrier performance, deterioration of the heat insulating performance of the vacuum heat insulating material over time is suppressed. can do. Furthermore, for the part where the surface temperature of the outer box is expected to be higher than the outside air temperature, the vacuum heat insulating material is embedded in the hard urethane foam between the outer and inner boxes, so that the heat insulating performance is further improved over time. The effect of suppressing deterioration is enhanced.
【００８３】[0083]
【００８４】 また、請求項４の発明によれば、外箱と
真空断熱材の間に設けたスペーサにより真空断熱材を固
定するばかりでなく、冷蔵庫の背面側に設けたスペーサ
の高さを前面側に設けたスペーサの高さ以上とするだけ
で、硬質ウレタンフォームの発泡方向に沿って真空断熱
材と外箱または内箱との距離を徐々に大きくしていくこ
とができる。また、スペーサはホットメルト接着剤によ
り外箱と真空断熱材を強力に接着できるため、硬質ウレ
タンフォームの発泡により真空断熱材が移動してしまう
といった問題は全く発生しない。更にホットメルト接着
剤にて真空断熱材を固定しているため、スペーサを適切
な位置に配置することができ、真空断熱材の表裏にて硬
質ウレタンフォームの発泡圧が異なる場合に起こり得る
真空断熱材の反りを解消することができる。その結果、
均質な硬質ウレタンフォーム中に高い被覆率で真空断熱
材を埋設することができ、省エネルギー効果を高めるこ
とができる。Further, according to the invention of claim 4 , not only the vacuum heat insulating material is fixed by the spacer provided between the outer box and the vacuum heat insulating material, but also the height of the spacer provided on the back side of the refrigerator is adjusted to the front side. The distance between the vacuum heat insulating material and the outer box or the inner box can be gradually increased along the foaming direction of the rigid urethane foam simply by setting the height of the spacer provided on the side or more. Further, since the spacer can strongly bond the outer box and the vacuum heat insulating material with the hot melt adhesive, there is no problem that the vacuum heat insulating material moves due to foaming of the rigid urethane foam. Furthermore, since the vacuum heat insulating material is fixed with a hot melt adhesive, the spacer can be placed at an appropriate position, and the vacuum heat insulating can occur when the foaming pressure of the rigid urethane foam is different between the front and back of the vacuum heat insulating material. The warpage of the material can be eliminated. as a result,
The vacuum heat insulating material can be embedded at a high coverage in a homogeneous rigid urethane foam, and the energy saving effect can be enhanced.
【００８５】 また、請求項５の発明によれば、真空断
熱材どうしの離間距離を硬質ウレタンフォームの充填可
能とされる最低厚さ以上にすることにより、硬質ウレタ
ンフォームの流動性を維持することができるため、突き
合わせ部分に均質なウレタン層を形成することができ
る。これにより、硬質ウレタンフォームの荒れや発泡不
足による断熱性能の低下を引き起こすことがないばかり
か、箱体強度をも維持することができる。Further, according to the invention of claim 5 , the fluidity of the rigid urethane foam is maintained by setting the distance between the vacuum heat insulating materials to be equal to or more than the minimum thickness capable of filling the rigid urethane foam. Therefore, a uniform urethane layer can be formed at the abutting portion. As a result, not only does the deterioration of the heat insulation performance due to the roughness and insufficient foaming of the rigid urethane foam occur, but also the strength of the box body can be maintained.
【００８６】 また、請求項６の発明によれば、断熱箱
体に対する真空断熱材の前面側端面と外箱前面の折り曲
げ端面とで構成される端面間距離を硬質ウレタンフォー
ムの充填可能とされる最低厚さ以上にすることにより、
硬質ウレタンフォームの流動性を維持することができる
ため、前記端面間に均質なウレタン層を形成することが
できる。これにより、硬質ウレタンフォームの荒れや発
泡不足による断熱性能の低下を引き起こすことがないば
かりか、箱体強度をも維持することができる。Further, according to the invention of claim 6 , it is possible to fill the rigid urethane foam with a distance between the end faces formed by the front end face of the vacuum heat insulating material and the bent end face of the outer box front face with respect to the heat insulating box. By making it more than the minimum thickness,
Since the fluidity of the rigid urethane foam can be maintained, a uniform urethane layer can be formed between the end faces. As a result, not only does the deterioration of the heat insulation performance due to the roughness and insufficient foaming of the rigid urethane foam occur, but also the strength of the box body can be maintained.
【００８７】[0087]
【００８８】 また、請求項７の発明によれば、硬質ウ
レタンフォームを注入する側の空間を注入口径以上にす
ることにより、液状態で注入されるウレタンを発泡させ
ることなく直接外箱の前面折り曲げ端面部分にまで注入
することができる。その結果、外箱と内箱との中間位置
に配設されている真空断熱材の外側と内側に対して同程
度スピードで硬質ウレタンフォームを発泡することがで
きるため、真空断熱材の表裏面において均質なウレタン
層を形成し省エネルギー効果を高めることができると共
に、箱体強度をも維持することができる。According to the invention of claim 7 , the space on the side for injecting the rigid urethane foam is made equal to or larger than the injection port diameter so that the urethane injected in the liquid state is directly bent without being foamed. It can be injected up to the end face portion. As a result, the rigid urethane foam can be foamed at the same speed on the outside and inside of the vacuum heat insulating material disposed in the intermediate position between the outer and inner boxes, so that the front and back surfaces of the vacuum heat insulating material can be foamed. A uniform urethane layer can be formed to enhance the energy saving effect, and at the same time, the box strength can be maintained.
【００８９】[0089]
【図１】本発明の実施の形態１における冷蔵庫の正面断
面図FIG. 1 is a front sectional view of a refrigerator according to a first embodiment of the present invention.
【図２】同実施の形態の冷蔵庫の側面断面図FIG. 2 is a side sectional view of the refrigerator according to the same embodiment.
【図３】同実施の形態の冷蔵庫側壁の断熱構造の拡大図FIG. 3 is an enlarged view of the heat insulating structure of the refrigerator side wall of the same embodiment.
【図４】同実施の形態の冷蔵庫の水平断面図FIG. 4 is a horizontal sectional view of the refrigerator according to the same embodiment.
【図５】従来の冷蔵庫の側面断面図FIG. 5 is a side sectional view of a conventional refrigerator.
【図６】従来の冷蔵庫の水平断面図FIG. 6 is a horizontal sectional view of a conventional refrigerator.
【図７】従来の冷蔵庫の断熱壁の拡大断面図FIG. 7 is an enlarged sectional view of a heat insulating wall of a conventional refrigerator.
１ 外箱 ２ 内箱 ３ａ 中間層に配設する真空断熱材 ３ｂ 断熱箱体背面に配設する真空断熱材 ３ｃ 断熱箱体底面に配設する真空断熱材 ４ 硬質ウレタンフォーム ２１ 冷蔵庫本体 ２２ 断熱箱体 ２４ スペーサ ２５ 背面板（外箱） ３１ 無機繊維集合体 ３２ 外被材 ３２ａ 金属箔層フィルム ３２ｂ 蒸着層フィルム 1 outer box 2 inner box 3a Vacuum heat insulating material arranged in the intermediate layer 3b Vacuum heat insulating material to be placed on the back of the heat insulating box 3c Vacuum heat insulating material to be placed on the bottom of the heat insulating box 4 rigid urethane foam 21 Refrigerator body 22 Thermal insulation box 24 spacer 25 Back plate (outer box) 31 Inorganic fiber aggregate 32 jacket material 32a metal foil layer film 32b evaporation layer film
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高西 英知 大阪府東大阪市高井田本通４丁目２番５ 号 松下冷機株式会社内 (72)発明者 樋上 和也 大阪府東大阪市高井田本通４丁目２番５ 号 松下冷機株式会社内 (56)参考文献 特開2000−18486（ＪＰ，Ａ) 特開 平８−247632（ＪＰ，Ａ) 特開 平11−304082（ＪＰ，Ａ) 特開2000−304428（ＪＰ，Ａ) 特開 平11−201627（ＪＰ，Ａ) 実開 昭63−57481（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F25D 23/06 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hidetoshi Takanishi 4-2-5 Takaidahondori, Higashi-Osaka-shi, Osaka Prefecture Matsushita Refrigerator Co., Ltd. Matsushita Refrigerator Co., Ltd. (56) References JP 2000-18486 (JP, A) JP 8-247632 (JP, A) JP 11-304082 (JP, A) JP 2000-304428 (JP, A) JP-A-11-201627 (JP, A) Actual development Sho 63-57481 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) F25D 23/06
Claims (7)
と真空断熱材とを備え、真空断熱材を両側面，天面，背
面，底面，および前面の各面に配置し、外箱の表面積に
対して真空断熱材の被覆率が５０％を超え８０％以下で
あり、かつ前記両側面および前記天面には放熱用の高温
冷媒配管を外箱に接するように配設した冷蔵庫におい
て、高温冷媒配管によって外箱表面温度が外気温度より
も高くなる両側面および天面においては、真空断熱材の
表裏両面に均質なウレタン層が形成され、真空断熱材と
外箱との距離が真空断熱材と内箱との距離より小さく、
前面側から背面側に向かって真空断熱材と外箱との距離
が徐々に大きくなるように、真空断熱材を外箱と内箱の
中間で硬質ウレタンフォームに埋設し、背面においては
真空断熱材を外箱の背面板に固定し、底面においては真
空断熱材を内箱に固定し、外箱と内箱の間に硬質ウレタ
ンフォームを注入するための注入口を、両側面の真空断
熱材と内箱との空間には直接注入されるが両側面の真空
断熱材と外箱との空間には直接注入されないように外箱
背面に設けたことを特徴とする冷蔵庫。1. A hard urethane foam and a vacuum heat insulating material are provided between an outer box and an inner box, and the vacuum heat insulating material is arranged on each side surface, the top surface, the back surface, the bottom surface, and the front surface of the outer box. coverage of the vacuum heat insulating material is Ri <br/> Ah at 80% or less than 50% of the surface area, and high temperature for heat dissipation on the side surfaces and the top surface
In a refrigerator which is disposed in contact with the refrigerant pipe on the box, the outer box surface temperature by a hot refrigerant pipe in both sides and the top surface is higher than the outside air temperature, the vacuum heat insulating material
A uniform urethane layer is formed on both the front and back sides, and it serves as a vacuum insulation material.
The distance from the outer box is smaller than the distance between the vacuum insulation and the inner box,
Distance between the vacuum insulation material and the outer box from the front side to the back side
The vacuum insulation material is embedded in the rigid urethane foam between the outer and inner boxes so that
Secure the vacuum insulation to the back panel of the outer box,
Fix the air insulation material to the inner box and put a hard urethane between the outer and inner boxes.
The injection port for injecting the
It is directly injected into the space between the heat material and the inner box, but the vacuum on both sides
The outer box so that it is not directly injected into the space between the heat insulating material and the outer box
A refrigerator characterized by being installed on the back .
真空断熱材以外の介在物としての取っ手がある扉におい
ては、真空断熱材を外箱と内箱の中間で硬質ウレタンフ
ォームに埋設することを特徴とする請求項１記載の冷蔵
庫。2. In a door having a handle other than the hard urethane foam and the vacuum heat insulating material as an intervening material near the inner side of the outer box , the vacuum heat insulating material is provided between the outer box and the inner box. The refrigerator according to claim 1, wherein the refrigerator is embedded in the refrigerator.
ィルムからなる前記真空断熱材において、前記ガスバリ
ア性フィルムを構成する金属箔層から成るフィルム面と
アルミ蒸着層から成るフィルム面のうち前記アルミ蒸着
層から成るフィルム面を内箱側に設けたことを特徴とす
る請求項１または請求項２記載の冷蔵庫。3. The vacuum heat insulating material comprising a core material and a gas barrier film covering the core material, wherein the film surface made of a metal foil layer forming the gas barrier film and the film surface made of an aluminum vapor deposition layer The refrigerator according to claim 1 or 2, wherein a film surface made of an aluminum vapor deposition layer is provided on the inner box side.
はスペーサにより外箱に固定しており、背面側に設けた
スペーサの高さを前面側に設けたスペーサの高さ以上と
することを特徴とする請求項１から請求項３のいずれか
一項に記載の冷蔵庫。4. A vacuum heat insulating material on both sides and the top surface.
Is fixed to the outer box by a spacer, and the height of the spacer provided on the back side is equal to or greater than the height of the spacer provided on the front side .
The refrigerator according to item 1 .
に配設した真空断熱材どうしの離間距離を、両側面およ
び天面の真空断熱材と外箱との距離以上にすることを特
徴とする請求項１から請求項４のいずれか一項に記載の
冷蔵庫。5. Both sides, top, rear, bottom, and the distance of the vacuum heat insulating material to each other which is disposed on the front, Oyo both sides
The refrigerator according to any one of claims 1 to 4 , wherein a distance between the vacuum heat insulating material on the top surface and the outer box is equal to or more than a distance .
設する真空断熱材の前面側端面との端面間距離を、外箱
と内箱の中間で硬質ウレタンフォームに埋設した真空断
熱材と外箱との距離以上にすることを特徴とする請求項
１から請求項５のいずれか一項に記載の冷蔵庫。6. A vacuum heat insulating material in which a distance between an end surface of a front side bent end surface of an outer box and a front side end surface of a vacuum heat insulating material disposed on both side surfaces is embedded in a hard urethane foam in the middle of the outer box and the inner box. 6. The refrigerator according to any one of claims 1 to 5 , wherein a distance between the refrigerator and the outer box is equal to or more than a distance .
離を、背面に設けた硬質ウレタンフォームの注入口径以
上とすることを特徴とする請求項１から請求項６のいず
れか一項に記載の冷蔵庫。7. The method according to any one of claims 1 to 6 , characterized in that the distance between the vacuum heat insulating material on both side surfaces and the inner box is equal to or larger than the injection port diameter of the rigid urethane foam provided on the back surface.
Refrigerator according to item 1 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001196060A JP3493009B2 (en) | 2001-06-28 | 2001-06-28 | refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001196060A JP3493009B2 (en) | 2001-06-28 | 2001-06-28 | refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003014368A JP2003014368A (en) | 2003-01-15 |
| JP3493009B2 true JP3493009B2 (en) | 2004-02-03 |
Family
ID=19033937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001196060A Expired - Fee Related JP3493009B2 (en) | 2001-06-28 | 2001-06-28 | refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3493009B2 (en) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4183530B2 (en) * | 2003-02-27 | 2008-11-19 | 三洋電機株式会社 | Heat insulation box |
| WO2005121668A1 (en) * | 2004-06-11 | 2005-12-22 | Arcelik Anonim Sirketi | An insulated unit |
| JP2009024922A (en) * | 2007-07-19 | 2009-02-05 | Hitachi Appliances Inc | Refrigerator |
| JP2009024921A (en) * | 2007-07-19 | 2009-02-05 | Hitachi Appliances Inc | Refrigerator |
| JP2009121697A (en) * | 2007-11-12 | 2009-06-04 | Sharp Corp | Refrigerator |
| JP4778996B2 (en) * | 2008-09-03 | 2011-09-21 | 日立アプライアンス株式会社 | Vacuum heat insulating material and refrigerator using the same |
| JP2010266089A (en) * | 2009-05-12 | 2010-11-25 | Hitachi Appliances Inc | Heat insulating case, refrigerator including the same and method of manufacturing heat insulating case |
| JP2011027204A (en) * | 2009-07-28 | 2011-02-10 | Mitsubishi Electric Corp | Vacuum heat insulation material and insulation box provided with this vacuum heat insulation material |
| JP5303397B2 (en) * | 2009-08-12 | 2013-10-02 | 日立アプライアンス株式会社 | refrigerator |
| JP5303415B2 (en) * | 2009-09-28 | 2013-10-02 | 日立アプライアンス株式会社 | refrigerator |
| JP5193980B2 (en) * | 2009-09-28 | 2013-05-08 | 日立アプライアンス株式会社 | refrigerator |
| JP5646241B2 (en) * | 2010-07-28 | 2014-12-24 | 株式会社東芝 | refrigerator |
| JP5544254B2 (en) * | 2010-09-14 | 2014-07-09 | 日立アプライアンス株式会社 | refrigerator |
| JP2012083068A (en) * | 2010-10-14 | 2012-04-26 | Mitsubishi Electric Corp | Refrigerator |
| JP5506733B2 (en) * | 2011-04-15 | 2014-05-28 | 三菱電機株式会社 | refrigerator |
| JP6191004B2 (en) * | 2012-10-01 | 2017-09-06 | パナソニックＩｐマネジメント株式会社 | refrigerator |
| SG10201801051QA (en) * | 2013-06-07 | 2018-04-27 | Mitsubishi Electric Corp | Heat insulating box body, refrigerator, and device including heat insulating box body |
| AU2014275821B2 (en) * | 2013-06-07 | 2016-05-26 | Mitsubishi Electric Corporation | Heat insulating box body and refrigerator |
| JP5959672B2 (en) * | 2015-01-15 | 2016-08-02 | 株式会社東芝 | Insulation cabinet |
| MY182708A (en) * | 2015-01-16 | 2021-02-03 | Mitsubishi Electric Corp | Refrigerator |
| AU2016432112B2 (en) * | 2016-12-16 | 2019-07-25 | Mitsubishi Electric Corporation | Refrigerator |
| JP2019049409A (en) * | 2018-11-27 | 2019-03-28 | 東芝ライフスタイル株式会社 | refrigerator |
| JP7287642B2 (en) * | 2018-12-27 | 2023-06-06 | アクア株式会社 | refrigerator |
| JP7287643B2 (en) * | 2018-12-27 | 2023-06-06 | アクア株式会社 | Refrigerator and manufacturing method thereof |
| JP7285093B2 (en) * | 2019-02-28 | 2023-06-01 | 日立グローバルライフソリューションズ株式会社 | Insulation box body and refrigerator provided with the same |
| JP7261459B2 (en) | 2019-03-05 | 2023-04-20 | アクア株式会社 | Refrigerator and manufacturing method thereof |
| JP7117355B2 (en) * | 2020-09-15 | 2022-08-12 | 東芝ライフスタイル株式会社 | insulated cabinet |
| JP7299257B2 (en) * | 2021-02-15 | 2023-06-27 | 日立グローバルライフソリューションズ株式会社 | refrigerator |
-
2001
- 2001-06-28 JP JP2001196060A patent/JP3493009B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003014368A (en) | 2003-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3493009B2 (en) | refrigerator | |
| KR100662530B1 (en) | Refrigerator | |
| JP4111096B2 (en) | refrigerator | |
| AU2013238222B2 (en) | Heat insulating box, and refrigerator and hot-water storage device each comprising heat insulating box | |
| KR100617666B1 (en) | Refrigerator | |
| KR20120024665A (en) | Refrigerator equipped with vacuum insulation material | |
| JP2003314951A (en) | Refrigerator | |
| JP3513123B2 (en) | Refrigerator manufacturing method | |
| JP2015007524A (en) | Refrigerator | |
| JP2007198622A (en) | Refrigerator | |
| JP2004028349A (en) | Refrigerator | |
| JP4196851B2 (en) | refrigerator | |
| JP2011099566A (en) | Vacuum heat insulating panel and refrigerator | |
| TWI727629B (en) | refrigerator | |
| JP3607280B2 (en) | refrigerator | |
| KR20050028296A (en) | Refrigerator | |
| JP2011237087A (en) | Refrigerator | |
| JP2008128516A (en) | Refrigerator | |
| WO2015025477A1 (en) | Refrigerator | |
| JP2003075058A (en) | Refrigerator | |
| JP2004125216A (en) | Refrigerator | |
| JP3942962B2 (en) | refrigerator | |
| JP2002147942A (en) | Refrigerator | |
| JP2005164200A (en) | Refrigerator | |
| JP2004028350A (en) | Refrigerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TRDD | Decision of grant or rejection written | ||
| R150 | Certificate of patent or registration of utility model |
Ref document number: 3493009 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071114 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081114 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081114 Year of fee payment: 5 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081114 Year of fee payment: 5 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081114 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091114 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091114 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101114 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111114 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121114 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131114 Year of fee payment: 10 |
|
| LAPS | Cancellation because of no payment of annual fees |