JP2004294038A - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
JP2004294038A
JP2004294038A JP2003090788A JP2003090788A JP2004294038A JP 2004294038 A JP2004294038 A JP 2004294038A JP 2003090788 A JP2003090788 A JP 2003090788A JP 2003090788 A JP2003090788 A JP 2003090788A JP 2004294038 A JP2004294038 A JP 2004294038A
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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.)
Granted
Application number
JP2003090788A
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Japanese (ja)
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JP4398661B2 (en
Inventor
Takehisa Okamoto
武久 岡本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
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Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP2003090788A priority Critical patent/JP4398661B2/en
Publication of JP2004294038A publication Critical patent/JP2004294038A/en
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Publication of JP4398661B2 publication Critical patent/JP4398661B2/en
Anticipated expiration legal-status Critical
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  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator, jointly using hard urethane foam and vacuum thermal insulation material as a thermal insulation material of a refrigerating room or a freezing room, easily determining the buried position of the vacuum thermal insulation material in knocking down, and generating no material left undetached. <P>SOLUTION: In the refrigerator jointly using hard urethane foam and vacuum thermal insulation material as a thermal insulation material of the refrigerating room or the freezing room, the buried position of the vacuum thermal insulation material is indicated on a refrigerator body. <P>COPYRIGHT: (C)2005,JPO&NCIPI

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】
【課題を解決するための手段】
請求項1の冷蔵庫は、上記の課題を解決するために、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、真空断熱材の埋設位置を冷蔵庫本体に表示したものとする。
【0011】
請求項2の冷蔵庫は、上記冷蔵庫において、真空断熱材の埋設枚数を、埋設位置と共に冷蔵庫本体に表示したものとする。
【0012】
また、請求項3の冷蔵庫は、上記冷蔵庫において、冷蔵室又は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2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3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]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a refrigerator using a rigid urethane foam and a vacuum heat insulating material as heat insulating materials.
[0002]
[Prior Art and Problems to be Solved by the Invention]
Hard urethane foam has been mainly used as a heat insulating material for refrigerators. In recent years, the use of vacuum heat insulating materials having better heat insulation performance than hard urethane foam has been increasing. The vacuum heat insulating material is a material in which a core material is covered with an outer cover material and the inside thereof is decompressed and sealed, and a material used for a refrigerator usually has a panel shape.
[0003]
Various materials are used as a core material and a skin material of the vacuum heat insulating material, and as the skin material, a composite laminate film such as a polyester film, a nylon film, and a polyethylene film is often used. Powders are sometimes used and are difficult to recycle because of the combination of such dissimilar materials, and are usually disposed of by landfilling or incineration after removal from the refrigerator.
[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 that a polyester film is used as a core material and a laminated film in which a diamond-like carbon thin film is fixed. It has been proposed to use a vacuum heat insulating material composed of a jacket material for a refrigerator, and to display the material type of the vacuum heat insulating material used on 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 Japanese Patent Application Laid-Open No. 10-205995, it is currently used together with a rigid urethane foam. It is.
[0006]
Regardless of whether the vacuum insulation material is discarded or recycled, it must be separated when the refrigerator is dismantled at a recycling plant, and is removed manually. However, under the situation where the vacuum heat insulating material and the urethane foam are used together as described above, the number of models using the vacuum heat insulating material increases, and when the number of sheets used increases, which part has the vacuum heat insulating material embedded therein? There is a problem that it becomes difficult to make a distinction and the removal work is hindered.
[0007]
The present invention has been made in view of the above, and is a refrigerator in which a rigid urethane foam and a vacuum heat insulating material are used in combination as a heat insulating material for a refrigerator or a freezing room, and a determination of a buried position of the vacuum heat insulating material at the time of disassembly. It is an object of the present invention to provide a refrigerator that is easy to remove and does not leave unremoved parts.
[0008]
[Patent Document 1]
JP-A-2002-188791
[Patent Document 2]
JP-A-10-205995
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the refrigerator according to claim 1 uses a hard urethane foam and a vacuum heat insulating material as a heat insulating material for a refrigerator compartment or a freezing room. Shall be done.
[0011]
A refrigerator according to a second aspect of the present invention is the refrigerator, wherein the number of buried vacuum heat insulating materials is displayed on the refrigerator body together with the buried position.
[0012]
A refrigerator according to a third aspect of the present invention is the refrigerator, wherein whether or not the vacuum heat insulating material is embedded in a door of a refrigerator compartment or a freezer compartment is displayed on the door.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
1 and 2 are longitudinal sectional views showing an example of a refrigerator using both rigid urethane foam and vacuum heat insulating material. FIG. 1 is a view from the front, and FIG. 2 is a view from the side. In both figures, reference numeral 1 denotes a refrigeration room, reference numeral 2 denotes a vegetable room, reference numeral 3 denotes a freezing room, reference numeral 4 denotes hard urethane foam, reference numeral 5 denotes a vacuum heat insulating material, and arrows indicate flow directions of cold air.
[0014]
As shown in these figures, in the refrigerator of this example, one piece of vacuum heat insulating material is provided on each side, one piece on the back face, one piece on the ceiling face, and one piece on the freezer door (bottom row). It is buried in urethane foam.
[0015]
For example, a label as shown in FIG. 3 is attached to the back of a refrigerator cabinet or the like in order to indicate the position where the vacuum insulation material of the refrigerator is embedded.
[0016]
On the label of this example, a diagram showing the embedding position of the vacuum heat insulating material, the number thereof, and the embedding position is also written. In this way, by describing the number of buried sheets together with the buried position, when a plurality of vacuum heat insulating materials are buried on one surface, it is possible to prevent the vacuum heat insulating material from being left unremoved. Also, by adding a simple figure as shown in this figure, it is possible to make the embedding position accurately and intuitively understood. However, the display items and the display method of the labels shown in FIG. 3 are merely examples, and the present invention is not limited to this.
[0017]
As an example of a display method of the buried position or the like, in addition to attaching the label as described above, engraving or printing is directly performed on the refrigerator, or an IC chip of a wireless tag is attached.
[0018]
The printing may be with a normal paint, but a special paint that is invisible to the naked eye under natural light may be used. The special paint referred to herein has a property of discoloring (coloring) in response to light in a predetermined wavelength range, and may be any material that can be read at the time of disassembly. It is possible to use a solution obtained by converting a reaction discoloration type pigment into a solution. In particular, if the color is reversibly colored and colorless, the display can be printed using the color, the content of the display can be confirmed, and then the color can be reduced.
[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 a wireless tag is used, information recorded on the tag can be automatically recognized without a manual scanning operation required in a conventional barcode system, thereby improving work efficiency.
[0020]
In general, the display position such as the embedding position by the label or the like is preferably a place that does not impair the design, such as the back of the cabinet or the inside of the door of the refrigerator or freezer. However, 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, the display position is not particularly limited.
[0021]
When the presence or absence of the vacuum heat insulating material is displayed on the door of the refrigerator compartment or the freezer compartment, the presence or absence of the burial can be known even when these doors are separated from the main body during the disassembly, for example.
[0022]
【The invention's effect】
According to the refrigerator of the first aspect, in the refrigerator using both the hard urethane foam and the vacuum heat insulating material, it is easy to determine the embedding position of the vacuum heat insulating material, and the removal operation can be performed smoothly.
[0023]
According to the configuration of the second 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 unremoved.
[0024]
According to the configuration of claim 3, even when the door of the refrigerator compartment or the freezer compartment is separated from the main body, it is possible to know whether or not the vacuum heat insulating material is embedded.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an example of a refrigerator using a rigid urethane foam and a vacuum heat insulating material as viewed from the front.
FIG. 2 is a longitudinal sectional view of the refrigerator of FIG. 1 as viewed from a side.
FIG. 3 is a diagram showing an example of a display label indicating a position where a vacuum heat insulating material is embedded, and the like.
[Explanation of symbols]
1 ... refrigerator room 2 ... vegetable room 3 ... freezer room 4 ... rigid urethane foam 5 ... vacuum insulation

Claims (3)

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、
真空断熱材の埋設位置を冷蔵庫本体に表示したことを特徴とする冷蔵庫。
In refrigerators that use both rigid urethane foam and vacuum insulation as heat insulation in the refrigerator or freezer compartment,
A refrigerator characterized in that the position where the vacuum insulation material is embedded is displayed on the refrigerator body.
前記真空断熱材の埋設枚数を、前記埋設位置と共に冷蔵庫本体に表示したことを特徴とする請求項1に記載の冷蔵庫。2. The refrigerator according to claim 1, wherein the number of buried vacuum insulation materials is displayed on the refrigerator body together with the buried position. 冷蔵室又は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ことを特徴とする請求項1又は2に記載の冷蔵庫。The refrigerator according to claim 1 or 2, wherein whether or not the vacuum heat insulating material is buried in a door of the refrigerator compartment or the freezer compartment is displayed on the door.
JP2003090788A 2003-03-28 2003-03-28 refrigerator Expired - Lifetime JP4398661B2 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005069657A (en) * 2003-08-28 2005-03-17 Matsushita Electric Ind Co Ltd Vacuum thermal insulation material and its disassembly and recovery method
JP2006118808A (en) * 2004-10-22 2006-05-11 Matsushita Electric Ind Co Ltd Refrigerator
JP2006234028A (en) * 2005-02-23 2006-09-07 Matsushita Electric Ind Co Ltd Heat insulation structure
WO2013150727A1 (en) * 2012-04-03 2013-10-10 パナソニック株式会社 Refrigerator
JP2020063880A (en) * 2018-10-18 2020-04-23 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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005069657A (en) * 2003-08-28 2005-03-17 Matsushita Electric Ind Co Ltd Vacuum thermal insulation material and its disassembly and recovery method
JP2006118808A (en) * 2004-10-22 2006-05-11 Matsushita Electric Ind Co Ltd Refrigerator
JP2006234028A (en) * 2005-02-23 2006-09-07 Matsushita Electric Ind Co Ltd Heat insulation structure
WO2013150727A1 (en) * 2012-04-03 2013-10-10 パナソニック株式会社 Refrigerator
JP2020063880A (en) * 2018-10-18 2020-04-23 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

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