JP3811963B2

JP3811963B2 - refrigerator

Info

Publication number: JP3811963B2
Application number: JP04942995A
Authority: JP
Inventors: 朋秋竹田; 邦成荒木
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 1995-03-09
Filing date: 1995-03-09
Publication date: 2006-08-23
Anticipated expiration: 2021-08-23
Also published as: JPH08247632A

Description

【０００１】
【産業上の利用分野】
本発明は、現場発泡の断熱材を外箱と内箱間、及び扉外箱と扉内板間に使用した冷蔵庫に関するもので、特に真空断熱材を上記発泡断熱材と併用して使用する冷蔵庫に関するものである。
【０００２】
【従来の技術】
この種真空断熱材を用いた冷蔵庫の例としては、図１１に示す如きものがある。図に於いて、２１は冷蔵庫本体、この本体２１は箱体２２、扉体２３、それに冷凍サイクル２４等より構成されている。そして、上記箱体２２は外箱２５、内箱２６、現場発泡の断熱材２７等より構成されている。２８は上記発泡断熱材２７内に配設された、真空断熱材（尚、この真空断熱材２８は通常コア材を両面樹脂でコーティングされた１０μｍ程度のアルミのフィルムで包み、内部を１０~²〜１０~⁴ｔｏｏｒ位まで真空引きし、その真空度を保っているもの）である。
【０００３】
従って、この真空断熱材２８は、先の発泡断熱材２７と一体化されているものである。又、現場発泡の断熱材２７より、真空断熱材２８の断熱特性は２倍以上良いので、その分、この外箱と内箱間の断熱厚さは薄く出来る。真空断熱材は以上のように壁厚を薄くする手段として一般的に用いられているものである。
【０００４】
【発明が解決しようとする課題】
真空断熱材を現場発泡の断熱材と密着して使用するタイプの冷蔵庫にあっては次に記載するような問題点があった。
【０００５】
（１）真空断熱材自体の寿命劣下で断熱効果がなくなってしまった場合、他の機器（冷凍サイクル、電気品）に異常がなくともその真空断熱材を組み込んだ冷蔵庫は補修がきかず廃棄処分となる。
【０００６】
（２）真空断熱材を冷蔵庫の運搬途中に損傷させた場合、前（１）項同様、補修がきかず廃棄処分となる。
【０００７】
（３）冷蔵庫の組立時に真空断熱材を損傷させ、それを知らずに組み込んでしまった時も前（１）項と同じ扱いであった。
【０００８】
（４）真空断熱材が現場発泡の断熱材の流れを阻害する為に均一なフォームが形成出来ない。
【０００９】
【課題を解決するための手段】
本発明は、上記課題を解決すべくなされたものである。その具体的手段としては、現場発泡の断熱材を外箱と内箱間及び扉外板と扉内板間に使用した冷蔵庫に於いて、上記発泡断熱材と密着しない所に真空断熱材を配設するようにしたものである。具体的には、外箱、若しくは内箱を発泡断熱材側に凹ませた所に真空断熱材を設け、上記真空断熱材と発泡断熱材を分離し、サービス性を向上すると共に、真空断熱材が発泡断熱材充填時の流れ阻害とならないようにしたものである。更には、扉内板若しくは扉外板を断熱材側に凹ませた所に真空断熱材を設けることにより、上記と同じ効果を得るようにしたものである。
【００１０】
又、更には、現場発泡の断熱材を外箱と内箱間に使用した冷蔵庫において、内箱内に複数の貯蔵空間を備え、前記貯蔵空間の間を熱的に区割する仕切壁内の断熱材に真空断熱材を用いたことにより仕切壁厚を大巾に薄くし、冷蔵庫としての内容積の拡大を図ると共に、現場発泡の断熱材と真空断熱材の密着による課題を解決し、補修性の向上に寄与するものである。
【００１１】
又、更には、現場発泡の断熱材を外箱と内箱間に使用した冷蔵庫において、温度調節器或いはダンパーサーモを包む断熱材の一部として真空断熱材を利用したことにより前項と同様の効果を得るようにしたものである。
【００１２】
【作用】
現場発泡の断熱材を外箱と内箱間及び扉外板と扉内板間に使用した冷蔵庫に於いて、上記発泡断熱材と密着しない所（内箱、外箱、扉内板、扉外板を凹ませた所）に真空断熱材を配設しているので、何か上記真空断熱材に異常があったときには、従来の如く冷蔵庫本体を廃棄するのではなく、表面の覆い板等を外し、異常のあった真空断熱材を異常のない新しい真空断熱材に交換することが容易に出来るものである。その上、本発明の真空断熱材は先にも記載した如く、現象発泡の断熱材が充填される内箱と外箱間、或いは扉外板と扉内板間に配設されていないことにより、これ自体が上記発泡断熱材のフォーム形成時の抵抗になることがない。勿論、内箱或いは外箱が断熱材側に凹する為、この分、フォーム形成時の抵抗にはなるが、真空断熱材と比較すると、表面の形状がもともと滑らかである為、フォーム形成時の障害となる割合は、少ないものである。
【００１３】
【実施例】
本発明の詳細を図に示す一実施例で説明する。
【００１４】
図１は、本発明を備えた冷蔵庫箱体の縦断面図。
【００１５】
図２は、図１のＡ部拡大説明図。
【００１６】
図３は、図１のＢ部拡大説明図。
【００１７】
図４は、真空断熱材の内箱凹部への取付構造を示す図。
【００１８】
図５は、図１のＣ部拡大説明図。
【００１９】
図６は、図１のＤ部拡大説明図。
【００２０】
図７は、図１のＥ部拡大説明図。
【００２１】
図８は、図１のＦ部拡大説明図。
【００２２】
図９は、図１のＧ部拡大説明図。
【００２３】
図１０は、図１のＨ部拡大説明図。
【００２４】
先ず、図１に於いて、１は冷蔵庫本体、２は箱体、３は扉体である。しかして上記箱体２は外箱４、内箱５、現場発泡の断熱材６等により構成されている。
【００２５】
又、上記扉体３は、扉外板７と扉内板８、それに発泡断熱材６等により構成されている。９は冷蔵室１０と野菜室１１間を熱的に区割する仕切壁、１２は真空断熱材（この真空断熱材１２は従来例で説明した真空断熱材と同じ構成を有するものである。）
次に、上記真空断熱材の冷蔵庫本体１への取付けについて図２〜図１０をもって説明する。
【００２６】
図２に示すものは、冷凍サイクルを構成する圧縮機１３に対向する内箱部を凹ませ、ここに真空断熱材１２を使用し、この部分からの野菜室１１への熱侵入を最少限にしようとした例である。こうすることにより、壁厚を厚くしないで、熱遮断が効率良く行なえるものである。
【００２７】
図３に示すものは、冷気循環用ファンモータ１４対向部に真空断熱材１２を設けた例である。この部分は上記モータ１４を取付ける為に内箱を凹ませる。この為図にも示す如く、この部分の断熱壁厚は他と比較すると薄くなってしまう。従って、発泡断熱材６の性能であった場合、十分な熱遮断が出来にくい。本発明に於いては、外箱４を断熱材６側に凹ませ、ここに先の真空断熱材１２を配設したものである。
【００２８】
図４は、上記真空断熱材１２を内箱５、或いは外箱４等に取付ける際の一例を示したものである。内箱５に設けた凹部５ａに、先ず、二面テープ１５を貼り、そこに真空断熱材１２を仮止めし、次いで覆板１６をネジ１７止めして取付けるようにした例である。
【００２９】
図５に示すものは、冷蔵庫１０と野菜室１１間を熱的に区割する仕切壁９内に真空断熱材１２を設けたものである。ここに真空断熱材を設ければ発泡断熱材（ウレタンフォーム、スチロフォーム）に比較して薄壁厚とすることができるので、庫内内容積を拡大することが出来ることは勿論、真空断熱材自体発泡断熱材６と密着していないことより着脱が容易なものである。
【００３０】
図６に示すものは、図には示してないが温度調節器或いはダンパーサーモを包む断熱材６ａ（従来はスチロフォーム）の一部に真空断熱材１２を使った例を示すものである。このものに於いても、仕切壁９に設けた時と同様の効果が得られることは云うまでもない。
【００３１】
図７〜図１０に示すものは、真空断熱材を効果的に使う場所の例を示したもので、図７に示すものは、圧縮機１３近くの内箱底部に設けた例であり、図８に示すものは、冷却器１８の裏側に設けた例である。
【００３２】
又、図９に示すものは、野菜室１１等に冷気を導びくダクト１９部に設けた例である。これら何れも冷蔵庫内側と庫外側に他の所と比較して大きな温度差がある所である。
【００３３】
図１０に示すものは、扉側に真空断熱材１２を設ける例を示したものである。このものに於いても、先に記述してきた如く、発泡断熱材６と隔離すべく扉外板７、或いは扉内板８を断熱材６側に凹させ、そこに真空断熱材１２を配設するようにしたものである。
【００３４】
【発明の効果】
本発明は以上説明した如く、発泡断熱材と密着しない所に、しかも外部より容易に着脱出来る所に真空断熱材を用いるようにしたので、真空断熱材単体でのサービス交換が容易となることは勿論、従来同様断熱材の薄壁化による内容積向上に貢献出来るものである。
【図面の簡単な説明】
【図１】本発明を備えた冷蔵庫箱体の縦断面図。
【図２】図１のＡ部拡大説明図。
【図３】図１のＢ部拡大説明図。
【図４】真空断熱材の内箱凹部への取付構造を示す図。
【図５】図１のＣ部拡大説明図。
【図６】図１のＤ部拡大説明図。
【図７】図１のＥ部拡大説明図。
【図８】図１のＦ部拡大説明図。
【図９】図１のＧ部拡大説明図。
【図１０】図１のＨ部拡大説明図。
【図１１】真空断熱材を現場発泡の断熱材中に配設した従来構造を説明する冷蔵庫の縦断面図である。
【符号の説明】
１…冷蔵庫本体、
２…箱体、
３…扉体、
４…外箱、
５…内箱、
６…発泡断熱材、
７…扉外板、
８…扉内板、
９…仕切壁、
１０…冷蔵室、
１１…野菜室、
１２…真空断熱材、
１３…圧縮機、
１４…ファンモータ、
１５…二面テープ、
１６…覆板、
１７…ネジ、
１８…冷却器、
１９…ダクト。[0001]
[Industrial application fields]
TECHNICAL FIELD The present invention relates to a refrigerator that uses an in-situ foam heat insulating material between an outer box and an inner box, and between a door outer box and a door inner plate, and in particular, a refrigerator that uses a vacuum heat insulating material in combination with the foam heat insulating material. It is about.
[0002]
[Prior art]
An example of a refrigerator using this kind of vacuum heat insulating material is shown in FIG. In the figure, reference numeral 21 denotes a refrigerator main body, and the main body 21 includes a box body 22, a door body 23, a refrigeration cycle 24, and the like. The box 22 includes an outer box 25, an inner box 26, an in-situ heat insulating material 27, and the like. 28 disposed within the foam insulation 27, the vacuum heat insulating material (Note that this vacuum heat insulator 28 is wrapped normal core material with a film of aluminum on the order of 10μm coated on both sides resin, interior ^10-2 The vacuum is pulled to about 10 to ⁴ toor and the degree of vacuum is maintained.
[0003]
Therefore, the vacuum heat insulating material 28 is integrated with the previous foam heat insulating material 27. Further, the heat insulating property of the vacuum heat insulating material 28 is more than twice as good as that of the heat insulating material 27 which is foamed on site, so that the heat insulating thickness between the outer box and the inner box can be reduced accordingly. The vacuum heat insulating material is generally used as a means for reducing the wall thickness as described above.
[0004]
[Problems to be solved by the invention]
The refrigerator of the type that uses the vacuum heat insulating material in close contact with the in-situ foam heat insulating material has the following problems.
[0005]
(1) If the heat insulation effect is lost due to the deterioration of the life of the vacuum insulation material itself, the refrigerator incorporating the vacuum insulation material will not be repaired and discarded even if other equipment (refrigeration cycle, electrical products) is normal. It becomes.
[0006]
(2) If the vacuum heat insulating material is damaged during the transportation of the refrigerator, it will not be repaired and will be disposed of in the same manner as the previous item (1).
[0007]
(3) The vacuum insulation was damaged during assembly of the refrigerator, and it was treated the same as the previous item (1) when it was installed without knowing it.
[0008]
(4) Since the vacuum heat insulating material hinders the flow of the foamed heat insulating material, a uniform foam cannot be formed.
[0009]
[Means for Solving the Problems]
The present invention has been made to solve the above problems. As a specific means, in a refrigerator that uses in-situ foam insulation between the outer box and the inner box and between the door outer plate and the door inner plate, vacuum insulation is arranged in a place where the foam insulation is not in close contact. It is intended to be installed. Specifically, a vacuum heat insulating material is provided in a place where the outer box or the inner box is recessed on the foam heat insulating material side, and the vacuum heat insulating material and the foam heat insulating material are separated to improve serviceability, and the vacuum heat insulating material. Is designed not to obstruct the flow during filling with foam insulation. Furthermore, the same effect as described above is obtained by providing a vacuum heat insulating material in a place where the door inner plate or the door outer plate is recessed on the heat insulating material side.
[0010]
Further, in the refrigerator using the in-situ foam heat insulating material between the outer box and the inner box, the inner box has a plurality of storage spaces, and a partition wall that thermally partitions the storage spaces. By using vacuum heat insulating material as the heat insulating material, the partition wall thickness is greatly reduced, the internal volume of the refrigerator is expanded, and the problem caused by the close contact between the foamed heat insulating material and the vacuum heat insulating material is repaired. It contributes to the improvement of the property.
[0011]
In addition, in the refrigerator using the in-situ foam heat insulating material between the outer box and the inner box , the same effect as the previous item is obtained by using the vacuum heat insulating material as a part of the heat insulating material for wrapping the temperature controller or the damper thermo. It is something to get.
[0012]
[Action]
In refrigerators that use in-situ foam insulation between the outer box and the inner box and between the door outer plate and the door inner plate, do not adhere to the foam insulation (inner box, outer box, door inner plate, outside door) Since the vacuum heat insulating material is arranged in the place where the plate is recessed), if there is something wrong with the vacuum heat insulating material, instead of discarding the refrigerator body as in the past, a cover plate on the surface etc. It is possible to easily remove the abnormal vacuum heat insulating material and replace it with a new vacuum heat insulating material without abnormality. Moreover, as described above, the vacuum heat insulating material of the present invention is not disposed between the inner box and the outer box filled with the phenomenon foam heat insulating material or between the door outer plate and the door inner plate. This itself does not become a resistance when forming the foamed heat insulating foam. Of course, because the inner box or outer box is recessed on the heat insulating material side, this will be the resistance at the time of foam formation, but compared to the vacuum heat insulating material, the surface shape is originally smooth, so at the time of foam formation The percentage of obstacles is small.
[0013]
【Example】
The details of the present invention will be described with reference to an embodiment shown in the drawings.
[0014]
FIG. 1 is a longitudinal sectional view of a refrigerator box provided with the present invention.
[0015]
FIG. 2 is an enlarged explanatory view of a part A in FIG.
[0016]
FIG. 3 is an enlarged explanatory view of a portion B in FIG.
[0017]
FIG. 4 is a view showing a structure for attaching the vacuum heat insulating material to the inner box recess.
[0018]
FIG. 5 is an enlarged explanatory view of a portion C in FIG.
[0019]
FIG. 6 is an enlarged explanatory view of a D part in FIG. 1.
[0020]
FIG. 7 is an enlarged explanatory view of a portion E in FIG.
[0021]
FIG. 8 is an enlarged explanatory view of a portion F in FIG.
[0022]
FIG. 9 is an enlarged explanatory view of a G part in FIG. 1.
[0023]
FIG. 10 is an enlarged explanatory view of a portion H in FIG.
[0024]
First, in FIG. 1, 1 is a refrigerator main body, 2 is a box, 3 is a door. Thus, the box 2 is composed of an outer box 4, an inner box 5, an in-situ heat insulating material 6 and the like.
[0025]
The door 3 is composed of a door outer plate 7, a door inner plate 8, a foam heat insulating material 6, and the like. 9 is a partition wall that thermally partitions the refrigerator compartment 10 and the vegetable compartment 11, and 12 is a vacuum heat insulating material (the vacuum heat insulating material 12 has the same structure as the vacuum heat insulating material described in the conventional example).
Next, the attachment of the vacuum heat insulating material to the refrigerator body 1 will be described with reference to FIGS.
[0026]
In FIG. 2, the inner box portion facing the compressor 13 constituting the refrigeration cycle is recessed, and the vacuum heat insulating material 12 is used here to minimize heat intrusion into the vegetable compartment 11 from this portion. This is an example of trying. By doing so, heat insulation can be performed efficiently without increasing the wall thickness.
[0027]
The example shown in FIG. 3 is an example in which the vacuum heat insulating material 12 is provided at a portion opposite to the cold air circulation fan motor 14. This portion dents the inner box for mounting the motor 14. For this reason, as shown in the figure, the thickness of the heat insulating wall in this portion becomes thinner than others. Therefore, when it is the performance of the foam heat insulating material 6, it is difficult to perform sufficient heat insulation. In the present invention, the outer box 4 is recessed on the heat insulating material 6 side, and the previous vacuum heat insulating material 12 is disposed here.
[0028]
FIG. 4 shows an example when the vacuum heat insulating material 12 is attached to the inner box 5, the outer box 4, or the like. In this example, a double-sided tape 15 is first applied to the recess 5 a provided in the inner box 5, the vacuum heat insulating material 12 is temporarily fixed thereto, and then the cover plate 16 is fixed with screws 17.
[0029]
In the structure shown in FIG. 5, a vacuum heat insulating material 12 is provided in a partition wall 9 that thermally partitions the refrigerator 10 and the vegetable compartment 11. If a vacuum heat insulating material is provided here, the wall thickness can be increased compared to foam heat insulating materials (urethane foam, styrofoam), so that the internal volume can be expanded, and the vacuum heat insulating material itself is foamed. Since it is not in close contact with the heat insulating material 6, it can be easily attached and detached.
[0030]
6 shows an example in which the vacuum heat insulating material 12 is used as a part of the heat insulating material 6a (conventionally styrofoam) that wraps the temperature controller or the damper thermostat, although not shown in the drawing. Even in this case, it goes without saying that the same effect as that provided in the partition wall 9 can be obtained.
[0031]
7 to 10 show examples of places where the vacuum heat insulating material is effectively used, and those shown in FIG. 7 are examples provided at the bottom of the inner box near the compressor 13. 8 shows an example provided on the back side of the cooler 18.
[0032]
Moreover, what is shown in FIG. 9 is the example provided in the duct 19 part which guides cold air | gas to the vegetable compartment 11 grade | etc.,. Both of these are places where there is a large temperature difference between the inside of the refrigerator and the outside of the refrigerator as compared with other places.
[0033]
FIG. 10 shows an example in which the vacuum heat insulating material 12 is provided on the door side. In this case, as described above, the door outer plate 7 or the door inner plate 8 is recessed on the heat insulating material 6 side so as to be separated from the foam heat insulating material 6, and the vacuum heat insulating material 12 is disposed there. It is what you do.
[0034]
【The invention's effect】
As described above, since the vacuum heat insulating material is used in a place where the foam heat insulating material is not in close contact with the foam heat insulating material and can be easily attached and detached from the outside, it is easy to exchange the service with the vacuum heat insulating material alone. Of course, it can contribute to the improvement of the internal volume by reducing the wall thickness of the heat insulating material as in the prior art.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a refrigerator box provided with the present invention.
FIG. 2 is an enlarged explanatory view of a part A in FIG.
FIG. 3 is an enlarged explanatory view of a part B in FIG. 1;
FIG. 4 is a view showing a structure for attaching a vacuum heat insulating material to an inner box recess.
FIG. 5 is an enlarged explanatory view of a C part in FIG. 1;
6 is an enlarged explanatory view of a D part in FIG. 1. FIG.
FIG. 7 is an enlarged explanatory view of a part E in FIG. 1;
FIG. 8 is an enlarged explanatory view of a part F in FIG. 1;
FIG. 9 is an enlarged explanatory view of a G part in FIG. 1;
FIG. 10 is an enlarged explanatory view of a portion H in FIG.
FIG. 11 is a longitudinal sectional view of a refrigerator for explaining a conventional structure in which a vacuum heat insulating material is disposed in an in-situ foam heat insulating material.
[Explanation of symbols]
1 ... refrigerator body,
2 ... Box,
3 ... door,
4 ... Outer box,
5 ... Inner box,
6 ... Foam insulation,
7 ... Door skin,
8 ... Door inner plate,
9 ... partition wall,
10 ... Refrigerator room,
11 ... Vegetable room,
12 ... Vacuum insulation
13 ... Compressor,
14 ... Fan motor,
15 ... Double-sided tape,
16 ... cover plate,
17 ... screw,
18 ... cooler,
19 ... Duct.

Claims

In refrigerators that use in-situ foam insulation between the outer box and the inner box and between the door outer plate and the door inner plate, the outer case or the inner box is recessed in the foam insulation side, and the vacuum heat insulating material The refrigerator is characterized in that the vacuum heat insulating material is disposed without being in close contact with the foam heat insulating material.

In refrigerators that use in-situ foam insulation between the outer box and inner box and between the door outer plate and door inner plate, vacuum insulation is provided where the door inner plate or door outer plate is recessed toward the heat insulating material. A refrigerator characterized in that a material is provided and the vacuum heat insulating material is disposed without being in close contact with the foam heat insulating material.

In a refrigerator that uses in-situ foam insulation between the outer box and the inner box, the inner box has a plurality of storage spaces, and is thermally insulated by vacuum as a heat insulating material in the partition wall that partitions the storage spaces thermally. A refrigerator characterized in that a material is used and disposed without being in close contact with the foam heat insulating material .

In a refrigerator that uses an in-situ foam insulation between the outer box and the inner box, the vacuum insulation is disposed without being in close contact with the foam insulation as part of the insulation that wraps the temperature controller or damper thermostat. Features a refrigerator.