JP4398661B2 - refrigerator - Google Patents
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- Publication number
- JP4398661B2 JP4398661B2 JP2003090788A JP2003090788A JP4398661B2 JP 4398661 B2 JP4398661 B2 JP 4398661B2 JP 2003090788 A JP2003090788 A JP 2003090788A JP 2003090788 A JP2003090788 A JP 2003090788A JP 4398661 B2 JP4398661 B2 JP 4398661B2
- Authority
- JP
- Japan
- Prior art keywords
- refrigerator
- heat insulating
- insulating material
- vacuum heat
- urethane foam
- 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 - Lifetime
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- Refrigerator Housings (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Description
【0001】
【発明の属する技術分野】
本発明は、断熱材として硬質ウレタンフォームと真空断熱材とを併用した冷蔵庫に関する。
【0002】
【従来の技術と発明が解決しようとする課題】
冷蔵庫の断熱材としては、硬質ウレタンフォームが主として用いられてきたが、近年、硬質ウレタンフォームより断熱性能の優れた真空断熱材を使用するケースが増加している。真空断熱材とは、芯材を外被材で覆って内部を減圧、封止したものであり、冷蔵庫に使用されるものは通常パネル状をなしている。
【0003】
真空断熱材の芯材及び外皮材としては種々のものが使用され、外皮材としては、ポリエステルフィルムやナイロンフィルム、ポリエチレンフィルム等の複合ラミネートフィルム等が多く使用されているが、芯材に例えば無機粉末が使用される場合もあり、このような異種材料の組合せからなるためにリサイクルが困難であり、通常は冷蔵庫から取り外した後、埋立や焼却により処分されている。
【0004】
これに鑑みて真空断熱材のリサイクル率を向上させるために、例えば、特開2002−188791号公報には、ポリエステル集綿体等を芯材とし、ダイヤモンドライクカーボンの薄膜を固着したラミネートフィルムとからなる外被材から構成された真空断熱材を冷蔵庫に使用すること、及び使用している真空断熱材の材料種別を冷蔵庫に表示することが提案されている。
【0005】
しかしながら、断熱材として真空断熱材を単独で用いることは強度等の面から困難であり、例えば特開平10−205995号公報に記載されているように、硬質ウレタンフォームと併用されているのが現状である。
【0006】
真空断熱材を廃棄するにしても、リサイクルするにしても、リサイクル工場での冷蔵庫の解体時に分別する必要があり、手作業で取り外している。ところが、上記のように真空断熱材とウレタンフォームが併用されている状況下で、真空断熱材を使用する機種が増加し、使用枚数も増加すると、どの部分に真空断熱材が埋設されているかの判別が困難となり、取り外し作業に支障を来たすという問題が生じつつある。
【0007】
本発明は上記に鑑みてなされたものであり、冷蔵室又は冷凍室の断熱材として硬質ウレタンフォームと真空断熱材とを併用した冷蔵庫であって、解体の際に真空断熱材の埋設位置の判断が容易であり、外し残しが生じない冷蔵庫を提供することを目的とする。
【0008】
【特許文献1】
特開2002−188791号公報
【0009】
【特許文献2】
特開平10−205995号公報
【0010】
請求項1の冷蔵庫は、冷蔵室又は冷凍室の断熱材として硬質ウレタンフォームと真空断熱材とを併用した冷蔵庫において、前記真空断熱材の埋設位置を図により表示したラベルを前記冷蔵庫本体背面に設けたものとする。
【0011】
請求項2の冷蔵庫は、冷蔵室又は冷凍室の断熱材として硬質ウレタンフォームと真空断熱材とを併用した冷蔵庫において、前記真空断熱材の埋設位置を表示する図を、前記冷蔵庫本体背面に直接刻印又は印刷したものとする。
【0012】
また、請求項3の冷蔵庫は、請求項1又は請求項2の冷蔵庫において、前記真空断熱材の埋設位置と共にその枚数を、前記図と併記して表示したものとする。
さらに、請求項4の冷蔵庫は、請求項1ないし請求項3のいずれかの冷蔵庫において、前記冷蔵室又は前記冷凍室の扉における前記真空断熱材の埋設の有無をその扉に表示したものとする。
【0013】
【発明の実施の形態】
図1及び図2は硬質ウレタンフォームと真空断熱材を併用した冷蔵庫の例を示す縦断面図であり、図1は正面から見た図、図2は側面から見た図である。両図において、符号1は冷蔵室、符号2は野菜室、符号3は冷凍室、符号4は硬質ウレタンフォーム、符号5は真空断熱材、矢印は冷気の流動方向を示す。
【0014】
これらの図に示されたように、本例の冷蔵庫においては、両側面に各1枚、背面に1枚、天井面に1枚、冷凍庫扉(最下段)に1枚の真空断熱材が硬質ウレタンフォームに埋設されている。
【0015】
このような冷蔵庫の真空断熱材の埋設位置を示すために、例えば図3に示すようなラベルを冷蔵庫のキャビネット背面等に貼付する。
【0016】
本例のラベルには、真空断熱材の埋設位置と共にその枚数、及び埋設位置を示す図が併記されている。このように、埋設位置と共に埋設枚数も記載することにより、1の面に複数の真空断熱材が埋設されている場合に、外し残しを防止することができる。また、本図に示すような簡単な図を併記することにより、埋設位置を正確に、かつ直感的に理解させることが可能となる。但し、図3に示したラベルの表示項目や表示の仕方は一例であり、本発明は、これに限定されるものではない。
【0017】
埋設位置等の表示方法の例としては、上記のようなラベルを付すること以外に、刻印や印刷を冷蔵庫に直接施したり、あるいは無線タグのICチップを付することが挙げられる。
【0018】
印刷は通常の塗料によるものでもよいが、自然光の下では肉眼では見えない特殊塗料を使用してもよい。ここでいう特殊塗料とは、所定の波長範囲の光に反応して変色(着色)する性質を備えるものであって、解体時に読み取り可能とすることができるものであればよく、公知の特殊光反応変色型顔料を溶液化して塗料としたものを使用できる。特に、可逆的に着色及び無色化するものであれば、これを用いて表示を印刷し、表示内容を確認したのち無色化し、解体時に光照射により着色させて読み取り可能とすることができる。
【0019】
また、無線タグとは、情報を送信するための媒体として電磁エネルギーを使用する無線周波識別(RFID)タグであって、例えば販売取引中に物品を認識するために使用されている。無線タグを使用した場合、従来のバーコードシステムで必要であった手動の走査動作なしに、タグに記録された情報を自動的に認識できるので、作業効率が向上する。
【0020】
上記したラベル等による埋設位置等の表示位置としては、一般的には、キャビネット背面や冷蔵室又は冷凍室の扉の内側等の、意匠を損なわない場所が好ましい。但し、上記した特殊塗料等を用いた場合のように、通常肉眼では見えない表示や意匠を損なわない表示の場合は、表示位置は特に限定されない。
【0021】
冷蔵室や冷凍室の扉に真空断熱材の埋設の有無を表示した場合は、例えば解体途中でこれらの扉が本体から分離している場合にも、埋設の有無を知ることができる。
【0022】
【発明の効果】
請求項1又は請求項2の冷蔵庫によれば、硬質ウレタンフォームと真空断熱材を併用した冷蔵庫において、真空断熱材の埋設位置の判断が容易であり、取り外し作業をスムーズに行うことができる。
【0023】
請求項3の構成によれば、例えば1の面に複数の真空断熱材が使用されている場合等に、真空断熱材の外し残しを防止することができる。
【0024】
請求項4の構成によれば、冷蔵室や冷凍室の扉が本体から分離している場合にも、真空断熱材の埋設の有無を知ることができる。
【図面の簡単な説明】
【図1】硬質ウレタンフォームと真空断熱材を併用した冷蔵庫の例を示す、正面から見た縦断面図である。
【図2】図1の冷蔵庫の、側面から見た縦断面図である。
【図3】真空断熱材の埋設位置等を示す表示ラベルの一例を示す図である。
【符号の説明】
1……冷蔵室
2……野菜室
3……冷凍室
4……硬質ウレタンフォーム
5……真空断熱材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a refrigerator in which a rigid urethane foam and a vacuum heat insulating material are used in combination as a heat insulating material.
[0002]
[Prior art and problems to be solved by the invention]
Rigid urethane foam has been mainly used as a heat insulating material for refrigerators, but in recent years, there are an increasing number of cases using vacuum heat insulating materials having better heat insulating performance than hard urethane foam. The vacuum heat insulating material is a material in which a core material is covered with an outer covering material and the inside is decompressed and sealed. What is used in a refrigerator usually has a panel shape.
[0003]
Various materials are used as the core material and outer skin material of the vacuum heat insulating material. As the outer skin material, a composite laminate film such as a polyester film, a nylon film, and a polyethylene film is often used. In some cases, powder is used, and it is difficult to recycle because it consists of such a combination of different materials. Usually, it is removed from the refrigerator and then disposed of by landfill or incineration.
[0004]
In view of this, in order to improve the recycling rate of the vacuum heat insulating material, for example, Japanese Patent Application Laid-Open No. 2002-188791 discloses a laminate film in which a polyester cotton collection body or the like is used as a core material and a diamond-like carbon thin film is fixed. It has been proposed to use a vacuum heat insulating material composed of a covering material to be used in a refrigerator, and to display the material type of the vacuum heat insulating material used in the refrigerator.
[0005]
However, it is difficult to use a vacuum heat insulating material alone as a heat insulating material in terms of strength and the like. For example, as described in JP-A-10-205995, it is currently used in combination with a rigid urethane foam. It is.
[0006]
Whether the vacuum insulation material is discarded or recycled, it is necessary to separate it when the refrigerator is dismantled at the recycling factory, and it is removed manually. However, in the situation where vacuum insulation and urethane foam are used together as described above, when the number of models that use vacuum insulation increases and the number of used sheets increases, in which part the vacuum insulation is embedded. Discrimination becomes difficult, and there is a problem that the removal work is hindered.
[0007]
The present invention has been made in view of the above, and is a refrigerator in which a hard urethane foam and a vacuum heat insulating material are used in combination as a heat insulating material for a refrigerator compartment or a freezer compartment, and the determination of the embedded position of the vacuum heat insulating material at the time of dismantling It is an object of the present invention to provide a refrigerator that is easy to remove and does not leave undetached.
[0008]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-188791
[Patent Document 2]
Japanese Patent Laid-Open No. 10-205995
Refrigerator according to
[0011]
The refrigerator according to claim 2 is a refrigerator in which a hard urethane foam and a vacuum heat insulating material are used in combination as a heat insulating material for a refrigerator or a freezer room. Or it shall be printed.
[0012]
The refrigerator according to
Furthermore, the refrigerator according to claim 4 is the refrigerator according to any one of
[0013]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 are longitudinal sectional views showing an example of a refrigerator in which a rigid urethane foam and a vacuum heat insulating material are used together. FIG. 1 is a view seen from the front, and FIG. 2 is a view seen from the side. In both figures,
[0014]
As shown in these figures, in the refrigerator of this example, one vacuum heat insulating material is hard on the both sides, one on the back, one on the ceiling, and one on the freezer door (bottom level). Embedded in urethane foam.
[0015]
In order to show the burying position of the vacuum heat insulating material of such a refrigerator, for example, a label as shown in FIG.
[0016]
In the label of this example, a drawing showing the number of the vacuum heat insulating material as well as the number of the vacuum heat insulating material and the position where the vacuum heat insulating material is embedded is shown. Thus, by describing the number of burials as well as the burial position, when a plurality of vacuum heat insulating materials are buried in one surface, it is possible to prevent unremoved parts. In addition, by adding a simple diagram as shown in this figure, it is possible to accurately and intuitively understand the embedded position. However, the display items and display methods of the labels shown in FIG. 3 are merely examples, and the present invention is not limited to these.
[0017]
As an example of the display method of the embedment position and the like, in addition to attaching the label as described above, engraving or printing may be performed directly on the refrigerator, or an IC chip of a wireless tag may be attached.
[0018]
Printing may be performed using ordinary paint, but a special paint that cannot be seen with the naked eye under natural light may be used. The special paint referred to here has a property of changing color (coloring) in response to light in a predetermined wavelength range and can be read at the time of disassembly. It is possible to use a paint obtained by making a reaction-discoloration type pigment into a solution. In particular, if it is reversibly colored and colorless, the display can be printed using this, and after confirming the display content, it can be colorless and colored by light irradiation during disassembly so that it can be read.
[0019]
A wireless tag is a radio frequency identification (RFID) tag that uses electromagnetic energy as a medium for transmitting information, and is used, for example, to recognize an article during a sales transaction. When the wireless tag is used, the information recorded on the tag can be automatically recognized without the manual scanning operation required in the conventional barcode system, so that the work efficiency is improved.
[0020]
As a display position such as an embedding position by the above-described label or the like, generally, a place that does not impair the design, such as the back of the cabinet, the inside of the refrigerator compartment, or the door of the freezer compartment, is preferable. However, the display position is not particularly limited in the case of a display that is not normally visible to the naked eye or a display that does not impair the design as in the case of using the above-described special paint or the like.
[0021]
When the presence or absence of the vacuum heat insulating material is displayed on the doors of the refrigerator compartment or the freezer compartment, for example, even when these doors are separated from the main body during the dismantling, the presence or absence of the buried material can be known.
[0022]
【The invention's effect】
According to the refrigerator of
[0023]
According to the configuration of the third aspect, for example, when a plurality of vacuum heat insulating materials are used on one surface, it is possible to prevent the vacuum heat insulating material from being left behind.
[0024]
According to the structure of Claim 4 , even when the door of a refrigerator compartment or a freezer compartment is isolate | separated from the main body, the presence or absence of the embedment of a vacuum heat insulating material can be known.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view, as seen from the front, showing an example of a refrigerator in which a rigid urethane foam and a vacuum heat insulating material are used in combination.
FIG. 2 is a longitudinal sectional view of the refrigerator of FIG. 1 as seen from the side.
FIG. 3 is a diagram showing an example of a display label indicating a position where a vacuum heat insulating material is buried.
[Explanation of symbols]
1 ... Refrigerator room 2 ...
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003090788A JP4398661B2 (en) | 2003-03-28 | 2003-03-28 | refrigerator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003090788A JP4398661B2 (en) | 2003-03-28 | 2003-03-28 | refrigerator |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009183098A Division JP4672792B2 (en) | 2009-08-06 | 2009-08-06 | refrigerator |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004294038A JP2004294038A (en) | 2004-10-21 |
JP4398661B2 true JP4398661B2 (en) | 2010-01-13 |
Family
ID=33404323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003090788A Expired - Lifetime JP4398661B2 (en) | 2003-03-28 | 2003-03-28 | refrigerator |
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JP (1) | JP4398661B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10011418B2 (en) | 2014-09-26 | 2018-07-03 | Pelican Biothermal Llc | High efficiency bolt-on thermal insulating panel and thermally insulated shipping container employing such a thermal insulating panel |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4313122B2 (en) * | 2003-08-28 | 2009-08-12 | パナソニック株式会社 | Dismantling and recovery method for vacuum insulation |
JP4239948B2 (en) * | 2004-10-22 | 2009-03-18 | パナソニック株式会社 | refrigerator |
JP2006234028A (en) * | 2005-02-23 | 2006-09-07 | Matsushita Electric Ind Co Ltd | Heat insulation structure |
US20140375191A1 (en) * | 2012-04-03 | 2014-12-25 | Panasonic Corporation | Refrigerator |
JP6975699B2 (en) * | 2018-10-18 | 2021-12-01 | 日立グローバルライフソリューションズ株式会社 | refrigerator |
JP2021103017A (en) * | 2019-12-25 | 2021-07-15 | 日立グローバルライフソリューションズ株式会社 | refrigerator |
-
2003
- 2003-03-28 JP JP2003090788A patent/JP4398661B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10011418B2 (en) | 2014-09-26 | 2018-07-03 | Pelican Biothermal Llc | High efficiency bolt-on thermal insulating panel and thermally insulated shipping container employing such a thermal insulating panel |
Also Published As
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JP2004294038A (en) | 2004-10-21 |
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