JPH07294091A - Fixing method of heat radiation pipe against heat radiation plate of refrigerator - Google Patents
Fixing method of heat radiation pipe against heat radiation plate of refrigeratorInfo
- Publication number
- JPH07294091A JPH07294091A JP9260194A JP9260194A JPH07294091A JP H07294091 A JPH07294091 A JP H07294091A JP 9260194 A JP9260194 A JP 9260194A JP 9260194 A JP9260194 A JP 9260194A JP H07294091 A JPH07294091 A JP H07294091A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- pipe
- metal foil
- heat radiating
- heat radiation
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
- F28F1/22—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means having portions engaging further tubular elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
- F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、冷蔵庫の放熱板に対す
る放熱パイプの固定方法に関するもので、特に放熱パイ
プから放熱板への熱伝導効率の向上を図った放熱パイプ
の固定方法に係る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for fixing a heat radiating pipe to a heat radiating plate of a refrigerator, and more particularly to a method for fixing a heat radiating pipe from a heat radiating pipe to a heat radiating plate.
【０００２】[0002]
【従来の技術】従来から、冷蔵庫の冷却装置には圧縮式
冷凍機の原理が用いられており、これまでに冷却装置の
効率化、小型化、省エネルギー化を目的として、冷凍サ
イクルにおける吸熱作用および放熱作用の効率化の面で
様々な改良がなされてきた。以下、従来の冷蔵庫の構造
を図１、図２に従って説明する。2. Description of the Related Art Conventionally, the principle of a compression type refrigerator has been used in a refrigerator cooling device. Up to now, in order to improve efficiency, downsizing, and energy saving of the cooling device, a heat absorption action in a refrigeration cycle and Various improvements have been made in terms of efficiency of heat dissipation. The structure of a conventional refrigerator will be described below with reference to FIGS. 1 and 2.
【０００３】図１は、一般的な冷蔵庫の構造を示す断面
図、図２は冷蔵庫の放熱板に対する放熱パイプの固定構
造を示す平面図である。冷蔵庫は、その室内を構成する
内箱１と、この内箱１との間に一定間隔の空間部を保っ
て配置された外箱２とから構成され、内箱１と外箱２と
の間には断熱性を確保するために発泡ウレタン樹脂など
の断熱材３が充填されている。外箱２の背面は放熱板４
になっており、その内面に冷凍サイクルのコンデンサを
構成する放熱パイプ５が固定されている。FIG. 1 is a sectional view showing a structure of a general refrigerator, and FIG. 2 is a plan view showing a fixing structure of a heat radiating pipe to a heat radiating plate of the refrigerator. The refrigerator is composed of an inner box 1 forming the interior of the room and an outer box 2 arranged with a space between the inner box 1 and the inner box 1 at a constant interval. The inside is filled with a heat insulating material 3 such as urethane foam resin to ensure heat insulating properties. The back of the outer box 2 is a heat sink 4
The heat radiating pipe 5 forming a condenser of the refrigeration cycle is fixed to the inner surface of the heat radiating pipe 5.
【０００４】この放熱パイプ５は、図２のような蛇行状
に形成され、片面に粘着剤層７を形成したアルミニウム
などの金属箔６を用いて放熱板４に固定されている。こ
の場合、金属箔６は、放熱パイプ５を放熱板４の所定の
位置に固定する作用と共に、両者間の熱伝導性を確保す
るための働きを持つ。すなわち、放熱パイプ５は通常円
筒状であるため、放熱パイプ５と放熱板４との接触面積
は十分にとれず、それらのみでの放熱作用の効率は芳し
くない。そこで、この接触面積の不足を補うために、放
熱板４に対する放熱パイプ５の固定に金属箔６が用いら
れている。これによって冷媒からの潜熱伝導経路が増加
し、放熱効率が向上している。The heat dissipating pipe 5 is formed in a meandering shape as shown in FIG. 2, and is fixed to the heat dissipating plate 4 with a metal foil 6 such as aluminum having an adhesive layer 7 formed on one surface thereof. In this case, the metal foil 6 has a function of fixing the heat radiating pipe 5 to a predetermined position of the heat radiating plate 4 and a function of ensuring thermal conductivity between the both. That is, since the heat radiating pipe 5 is usually cylindrical, the contact area between the heat radiating pipe 5 and the heat radiating plate 4 cannot be sufficiently taken, and the efficiency of the heat radiating action only by them is not good. Therefore, in order to compensate for this lack of contact area, the metal foil 6 is used to fix the heat dissipation pipe 5 to the heat dissipation plate 4. As a result, the latent heat conduction paths from the refrigerant are increased, and the heat dissipation efficiency is improved.
【０００５】また、前記の断熱材３は、断熱作用に加
え、放熱板４に固定された放熱パイプ５を押さえて、そ
の固定をより確実なものにする作用を持つ。すなわち、
放熱パイプ５を固定した外箱２と内箱５とを組み合わ
せ、外箱２に設けた注入孔２ａより断熱材３を注入して
発泡させることにより、放熱パイプ５は断熱材３によっ
て放熱板４側に押し付けられ、しっかりと固定される。In addition to the heat insulating function, the heat insulating material 3 has a function of pressing the heat radiating pipe 5 fixed to the heat radiating plate 4 to make the fixing more reliable. That is,
The outer box 2 and the inner box 5 to which the heat radiation pipe 5 is fixed are combined, and the heat insulating material 3 is injected from the injection hole 2a provided in the outer box 2 to foam the heat radiation pipe 5. It is pressed to the side and firmly fixed.
【０００６】ところで、放熱パイプを放熱板に固定させ
るため、従来は、図３または図４に示す構造を備えた金
属箔６が使用されていた。図２の金属箔６は、その片面
に粘着剤層７が形成され、その粘着面がシリコン樹脂を
含浸した剥離紙８で被覆されたものである。図３の金属
箔６は、その片面に粘着剤層７が形成され、粘着剤層７
の反対側の面に剥離剤９が塗布されたものである。これ
らの金属箔において、剥離紙８や剥離剤９は、金属箔６
をロール状に巻き取って保管する場合に、粘着剤層７と
金属箔６とが接合し、巻き戻しが困難になることを防止
している。By the way, in order to fix the heat dissipation pipe to the heat dissipation plate, conventionally, the metal foil 6 having the structure shown in FIG. 3 or 4 has been used. The metal foil 6 of FIG. 2 has a pressure-sensitive adhesive layer 7 formed on one surface thereof, and the pressure-sensitive adhesive surface is covered with a release paper 8 impregnated with a silicone resin. The metal foil 6 of FIG. 3 has an adhesive layer 7 formed on one surface thereof.
The release agent 9 is applied to the surface on the opposite side of. In these metal foils, the release paper 8 and the release agent 9 are the metal foil 6
This prevents the pressure-sensitive adhesive layer 7 and the metal foil 6 from being bonded to each other and being difficult to rewind when the roll is wound and stored.
【０００７】[0007]
【発明が解決しようとする課題】ところが、放熱パイプ
と放熱板とを固定するのに前記のような粘着剤を塗布し
た金属箔を使用した場合、粘着剤はその厚さによって粘
着力が大きく変化することから、一定の粘着性を確保す
るためには粘着剤層の厚さが４０〜５０ミクロンと厚く
ならざるを得ない。その結果、この粘着剤層７が妨げと
なって接着部分における熱伝導性が低下し、放熱パイプ
からの放熱率も下落するという問題点があった。特に、
放熱パイプは、図２のような蛇行状に屈曲されるが、こ
の屈曲加工時において放熱パイプには多少のゆがみを生
じることがある。このような変形部分がある放熱パイプ
を平らな放熱板に固定するには、十分な接着強度を確保
する必要があることから、粘着剤層を薄くして熱伝導性
を確保することは不可能であった。However, when the metal foil coated with the above-mentioned adhesive is used to fix the heat radiating pipe and the heat radiating plate, the adhesive strength of the adhesive varies greatly depending on its thickness. Therefore, the thickness of the pressure-sensitive adhesive layer must be as thick as 40 to 50 microns in order to secure a certain level of tackiness. As a result, there is a problem in that the pressure-sensitive adhesive layer 7 interferes with the heat conductivity in the bonded portion, and the heat dissipation rate from the heat dissipation pipe also decreases. In particular,
The heat radiating pipe is bent in a meandering shape as shown in FIG. 2, but the heat radiating pipe may be slightly distorted during the bending process. It is impossible to secure thermal conductivity by thinning the adhesive layer because it is necessary to secure sufficient adhesive strength to fix the heat dissipation pipe with such deformed part to the flat heat dissipation plate. Met.
【０００８】また、図２のような金属箔では、粘着剤を
塗布した後の粘着面の処理方法として、剥離紙で覆って
いるため、金属箔と同面積の剥離紙が必要でコストがか
かり、また剥離紙を被覆する工程を経なければならず作
業工程が複雑であった。一方、図３のように粘着剤が塗
布されていない面に剥離剤を塗布した金属箔では、剥離
剤のコストやそれを塗布するための作業工程が増加する
欠点もあった。そのうえ、金属箔表面に剥離剤が塗布さ
れていると、外箱と内箱の間に充填された発泡性断熱材
と金属箔との接着性が悪くなり、放熱パイプ５と放熱板
４の固定作用が損なわれる欠点もあった。Further, in the case of the metal foil as shown in FIG. 2, as a method of treating the adhesive surface after applying the adhesive, since it is covered with a release paper, a release paper having the same area as the metal foil is required, which is costly. Moreover, the process of covering the release paper has to be performed, and the working process is complicated. On the other hand, as shown in FIG. 3, the metal foil having the release agent applied to the surface to which the adhesive is not applied has a drawback that the cost of the release agent and the work process for applying the release agent increase. Moreover, if a release agent is applied to the surface of the metal foil, the adhesiveness between the metal foil and the foaming heat insulating material filled between the outer box and the inner box deteriorates, and the heat radiating pipe 5 and the heat radiating plate 4 are fixed. There was also a drawback that the action was impaired.
【０００９】本発明は、前記のような従来技術の問題点
を解決し、放熱パイプの放熱における熱伝導性を良好に
維持し、放熱板と放熱パイプの固定をより安定的に行う
ことができる、放熱板に対する放熱パイプの固定方法を
提供することを目的とするものである。具体的には、請
求項１記載の発明の目的は、薄くても接着力の高いホッ
トメルト系接着剤層を形成した金属箔を使用することに
より、熱伝導性を損なわずに、しかも放熱パイプと放熱
板との確実な固定が行えるようにした冷蔵庫用放熱パイ
プの固定方法を提供することである。The present invention solves the above-mentioned problems of the prior art, maintains good thermal conductivity in heat dissipation of the heat dissipation pipe, and more stably fixes the heat dissipation plate and the heat dissipation pipe. An object of the present invention is to provide a method for fixing a heat dissipation pipe to a heat dissipation plate. Specifically, the object of the invention of claim 1 is to use a metal foil formed with a hot-melt adhesive layer having a high adhesive strength even if it is thin, so that the heat conductivity is not impaired and a heat radiating pipe is used. It is to provide a method for fixing a heat dissipation pipe for a refrigerator, which is capable of reliably fixing the heat dissipation plate to a heat dissipation plate.
【００１０】請求項２記載の発明の目的は、放熱パイプ
を放熱板に確実に固定させ、しかも優れた放熱効率を維
持できる冷蔵庫用放熱パイプの固定方法を提供すること
である。請求項３記載の発明の目的は、金属箔と放熱パ
イプあるいは放熱板との直接的な接触面積を確保するこ
とにより、より優れた熱伝導性を確保した冷蔵庫用放熱
パイプの固定方法を提供することである。請求項４記載
の発明の目的は、ホットメルト系の接着剤の特徴を生か
して簡単な作業で確実に放熱パイプを放熱板に固定でき
る冷蔵庫用放熱パイプの固定方法を提供することであ
る。請求項５記載の発明の目的は、発泡性断熱材によっ
て放熱パイプを放熱板に密着固定する作用に優れた冷蔵
庫用放熱パイプの固定方法を提供することである。It is an object of the present invention to provide a method for fixing a heat radiating pipe for a refrigerator, by which the heat radiating pipe can be securely fixed to the heat radiating plate and excellent heat radiating efficiency can be maintained. An object of the invention according to claim 3 is to provide a method for fixing a heat dissipation pipe for a refrigerator, which ensures more excellent thermal conductivity by ensuring a direct contact area between the metal foil and the heat dissipation pipe or the heat dissipation plate. That is. It is an object of the invention of claim 4 to provide a fixing method of a heat radiating pipe for a refrigerator, which makes it possible to surely fix the heat radiating pipe to a heat radiating plate by a simple work by taking advantage of the characteristics of the hot melt adhesive. It is an object of the invention of claim 5 to provide a fixing method of a heat radiating pipe for a refrigerator, which has an excellent function of closely fixing the heat radiating pipe to a heat radiating plate by a foaming heat insulating material.
【００１１】[0011]
【課題を解決するための手段】前記の目的を達成するた
めに、請求項１記載の発明は、冷蔵庫の放熱板に対する
放熱パイプの固定方法において、片面に固化されたホッ
トメルト系の接着剤層を形成した金属箔を、その接着剤
層が放熱パイプおよび放熱板に接触するように、放熱板
上に配置した放熱パイプを被覆し、その状態で接着剤層
を溶融させることにより、金属箔を介して放熱パイプを
放熱板に固定することを特徴とする。In order to achieve the above object, the invention according to claim 1 is a method for fixing a heat radiating pipe to a heat radiating plate of a refrigerator, wherein a hot melt adhesive layer solidified on one side is used. The metal foil on which the metal foil is formed is covered with a heat dissipation pipe arranged on the heat dissipation plate so that the adhesive layer contacts the heat dissipation pipe and the heat dissipation plate, and the adhesive layer is melted in that state to form the metal foil. It is characterized in that the heat radiation pipe is fixed to the heat radiation plate via the heat radiation plate.
【００１２】請求項２の発明は、前記請求項１の冷蔵庫
用放熱パイプの固定方法においてホットメルト系接着剤
を金属箔の片面全体に均一に塗布したことを特徴とす
る。請求項３の発明は、前記請求項１の冷蔵庫用放熱パ
イプの固定方法において、ホットメルト系接着剤を金属
箔の片面に所定の間隔を設けて部分的に塗布したことを
特徴とする。請求項４の発明は、前記請求項１の冷蔵庫
用放熱パイプの固定方法において、ホットメルト系接着
剤の溶融手段として加熱ローラを使用することことを特
徴とする。請求項５の発明は、前記請求項１の冷蔵庫用
放熱パイプの固定方法において、前記金属箔の表面が外
箱と内箱とで形成された空間部に充填された発泡性断熱
材に直接接触していることを特徴とする。According to a second aspect of the present invention, in the method for fixing a heat dissipation pipe for a refrigerator according to the first aspect, the hot melt adhesive is uniformly applied to one entire surface of the metal foil. According to a third aspect of the present invention, in the method for fixing a heat dissipation pipe for a refrigerator according to the first aspect, a hot-melt adhesive is partially applied on one surface of a metal foil at a predetermined interval. According to a fourth aspect of the present invention, in the method for fixing a heat dissipation pipe for a refrigerator according to the first aspect, a heating roller is used as a means for melting the hot melt adhesive. According to a fifth aspect of the present invention, in the method for fixing a heat dissipation pipe for a refrigerator according to the first aspect, the surface of the metal foil is directly contacted with a foaming heat insulating material filled in a space formed by an outer box and an inner box. It is characterized by doing.
【００１３】[0013]
【作用】前記のような構成を有する請求項１の発明で
は、金属箔による放熱板に対する放熱パイプの固定にホ
ットメルト系の接着剤を使用する。接着剤は粘着剤と比
較して、同量における接着能力が高いため、結果的に接
着部分の厚みは従来の半分以下の約２０ミクロン程度と
薄くすることが可能となり、放熱パイプから放熱板への
より良好な熱伝導性を確保することができる。また、ホ
ットメルトは加熱されるまでは粘着性・接着性をもたな
い。そのため、金属箔の片面に粘着剤を塗布する製造工
程において、図２または図３に示されるような剥離紙や
剥離剤が不必要となり、金属箔の製造作業も容易にな
る。According to the first aspect of the invention having the above-mentioned structure, the hot-melt adhesive is used for fixing the heat radiation pipe to the heat radiation plate by the metal foil. Since the adhesive has a higher adhesive ability in the same amount as the adhesive, the thickness of the adhesive part can be reduced to about 20 microns, which is less than half that of the conventional adhesive, and the heat dissipation pipe to the heat dissipation plate can be reduced. It is possible to secure better thermal conductivity. Also, hot melt does not have tackiness or adhesiveness until heated. Therefore, in the manufacturing process in which the adhesive is applied to one surface of the metal foil, the release paper or the release agent as shown in FIG. 2 or 3 is unnecessary, and the manufacturing work of the metal foil becomes easy.
【００１４】請求項２の発明では、放熱パイプを放熱板
に固定するのに熱溶着性の接着剤が金属箔の片面全体に
塗布されているため、強度の接着力を確保しつつ、放熱
効率を向上させることができる。請求項３の発明では、
放熱パイプと放熱板を固定するのに熱溶着性の接着剤が
金属箔の片面に格子状やストライプ状のように所定の間
隔を置いて塗布されているため、金属箔の表面に接着剤
層で覆われていない部分ができ、この部分では接着剤層
の影響を全く受けず、金属箔が放熱パイプおよび放熱板
に直接接触するため、放熱パイプから放熱板へのより良
好な熱伝導性を確保することができ、放熱効率を格段に
向上させることができる。請求項４の発明では、加熱ロ
−ラを使用してホットメルト系の接着剤を溶解させるた
め、簡単な作業で金属箔を所定の位置に確実に接着する
ことが可能である。請求項５の発明では、金属箔の接着
剤層とは反対側の面に剥離剤を塗布する必要がなくな
り、金属箔の金属面を断熱材に直接密着させることがで
きる。その結果、金属箔と断熱材が強く接着され、放熱
パイプの固定をより安定させることができる。According to the second aspect of the present invention, since the heat-welding adhesive is applied to the entire one surface of the metal foil to fix the heat-dissipating pipe to the heat-dissipating plate, the heat-dissipating efficiency is ensured while ensuring a strong adhesive force. Can be improved. According to the invention of claim 3,
A heat-welding adhesive is used to fix the heat dissipation pipe and heat dissipation plate on one side of the metal foil at a predetermined interval like a grid or stripe, so the adhesive layer on the surface of the metal foil. There is a part not covered with, and in this part there is no influence of the adhesive layer, and since the metal foil directly contacts the heat dissipation pipe and the heat dissipation plate, better heat conductivity from the heat dissipation pipe to the heat dissipation plate is provided. It is possible to secure the heat radiation efficiency, and it is possible to remarkably improve the heat radiation efficiency. In the invention of claim 4, since the hot-melt adhesive is melted by using the heating roller, the metal foil can be surely adhered to a predetermined position by a simple operation. In the invention of claim 5, there is no need to apply a release agent to the surface of the metal foil opposite to the adhesive layer, and the metal surface of the metal foil can be directly adhered to the heat insulating material. As a result, the metal foil and the heat insulating material are strongly adhered to each other, so that the heat radiation pipe can be more stably fixed.
【００１５】[0015]
（１）第１実施例 図５および図６は、本発明の第１実施例を示す図であ
り、この第１実施例は請求項１および請求項２記載の発
明に相当するものである。(1) First Embodiment FIGS. 5 and 6 are views showing a first embodiment of the present invention, and the first embodiment corresponds to the invention described in claims 1 and 2.
【００１６】まず、図５は、第１実施例に使用する金属
箔を示している。この図５に示すように、金属箔１３の
片面の全面は、ホットメルト系の接着剤層１４で被覆さ
れている。この場合、金属箔１３としては熱伝導性の大
きいアルミニウム箔を使用する。また、接着剤層１４は
２０ミクロン程度の厚さを有する。ホットメルト系接着
剤は、粘着剤に比較して接着力に優れるため、このよう
な薄い層であっても放熱パイプ１１と放熱板１２を接合
するのに十分な接着力を有する。First, FIG. 5 shows a metal foil used in the first embodiment. As shown in FIG. 5, the entire one surface of the metal foil 13 is covered with a hot melt adhesive layer 14. In this case, an aluminum foil having a high thermal conductivity is used as the metal foil 13. The adhesive layer 14 has a thickness of about 20 μm. Since the hot-melt adhesive has an excellent adhesive force as compared with the pressure-sensitive adhesive, even such a thin layer has sufficient adhesive force to bond the heat dissipation pipe 11 and the heat dissipation plate 12.
【００１７】次に、図６は、第１実施例の放熱パイプの
固定部分の断面図である。図中、１１は冷媒を通す金属
製の放熱パイプ、１２は冷蔵庫の外箱の背面を構成する
金属製の放熱板である。放熱板１２は、一般に冷蔵庫で
は鉄板が使用されている。そして、この放熱パイプ１１
を放熱板１２に対して固定し、さらに放熱パイプ１１と
放熱板１２間の熱伝導性を向上させるための金属箔１３
として、図５に示した金属箔１３が使用されている。Next, FIG. 6 is a sectional view of a fixed portion of the heat radiation pipe of the first embodiment. In the figure, 11 is a metal heat radiation pipe through which a refrigerant passes, and 12 is a metal heat radiation plate that constitutes the back surface of the outer box of the refrigerator. As the heat dissipation plate 12, an iron plate is generally used in a refrigerator. And this heat dissipation pipe 11
A metal foil 13 for fixing the heat dissipation plate 12 to the heat dissipation plate 12 and further improving the thermal conductivity between the heat dissipation pipe 11 and the heat dissipation plate 12.
For this, the metal foil 13 shown in FIG. 5 is used.
【００１８】このような放熱板１２に対する放熱パイプ
１１の固定は、以下に示す方法によって行われる。ま
ず、片面全体にホットメルト系接着剤層１４を形成した
金属箔１３を用意する。この場合、ホットメルト系接着
剤１４は常温では固化しており加熱されるまでは粘着あ
るいは接着作用を持たないため、金属箔１３に剥離紙を
積層したり剥離剤を塗布することは考慮する必要はな
く、未使用の金属箔１３は通常のシート状材料のように
ロール状に巻き取って保管・輸送することができる。The radiating pipe 11 is fixed to the radiating plate 12 by the following method. First, the metal foil 13 having the hot melt adhesive layer 14 formed on the entire one surface is prepared. In this case, since the hot melt adhesive 14 is solidified at room temperature and does not have an adhesive or adhesive action until heated, it is necessary to consider laminating release paper on the metal foil 13 or applying a release agent. However, the unused metal foil 13 can be rolled up like a normal sheet material and stored / transported.
【００１９】このようにして用意された金属箔１３を、
接着剤層１４が形成された面が下になるようにして放熱
パイプ１１および放熱板１２に覆い被せ、その上から加
熱ロ−ラ１５を用いて加熱・加圧する。この加熱ロ−ラ
１５は、図６に示すように、その中央部に放熱パイプ５
の形状に対応した凹部１５ａを備えており、金属箔１３
の全面が放熱パイプ１１および放熱板１２にしっかりと
密着するように押圧するものである。この加熱ローラ１
５が転がる間に、ローラから発する熱が金属箔１３を介
して接着剤層１４に伝わり、接着剤層１４が溶融し、放
熱パイプ１１と放熱板１２が固定される。この場合、加
熱温度は高温である必要はなく、ホットメルト系接着剤
の種類にもよるが一般に５０〜１２０℃の低温で良いた
め、加熱作業に特別な危険性をはらむものではない。The metal foil 13 thus prepared is
The radiating pipe 11 and the radiating plate 12 are covered with the surface on which the adhesive layer 14 is formed facing down, and the heating roller 15 is used to apply heat and pressure from above. As shown in FIG. 6, the heating roller 15 has a heat radiating pipe 5 at the center thereof.
The metal foil 13 has a recess 15a corresponding to the shape of
Is pressed so that the entire surface of is firmly attached to the heat radiating pipe 11 and the heat radiating plate 12. This heating roller 1
While 5 rolls, heat generated from the roller is transferred to the adhesive layer 14 through the metal foil 13, the adhesive layer 14 is melted, and the heat radiating pipe 11 and the heat radiating plate 12 are fixed. In this case, the heating temperature does not have to be high, and generally depends on the kind of the hot-melt adhesive, but a low temperature of 50 to 120 ° C. is generally sufficient, so there is no particular danger in the heating work.
【００２０】前記のような構成を有する本実施例では、
接着剤層１４は２０ミクロン程度の厚さでも金属同士を
接合するのに十分な接着力を維持できるため、粘着剤を
塗布した従来技術に比べて金属箔１３の熱伝導性に与え
る影響を小さくすることができる。また、金属箔１３の
表面に剥離剤を塗布していないため、冷蔵庫の内箱と外
箱との間に形成される空間部に発泡性断熱材を充填した
場合に、発泡性断熱材が金属箔４の表面に直接接着され
ることとなり、断熱材による放熱パイプの放熱板への固
定効果を損なうことがない。In the present embodiment having the above structure,
Even if the adhesive layer 14 has a thickness of about 20 microns, it can maintain a sufficient adhesive force for joining metals, so that it has less influence on the thermal conductivity of the metal foil 13 as compared with the prior art in which an adhesive is applied. can do. In addition, since the surface of the metal foil 13 is not coated with the release agent, when the space formed between the inner box and the outer box of the refrigerator is filled with the foaming heat insulating material, the foaming heat insulating material is metal. Since it is directly bonded to the surface of the foil 4, the effect of fixing the heat radiating pipe to the heat radiating plate by the heat insulating material is not impaired.
【００２１】（２）第２実施例 図７および図８は、本発明の第２実施例を示す図であ
り、この第２実施例は請求項３記載の発明に相当するも
のである。まず、図７は、第２実施例に使用する金属箔
を示している。この図７に示すように、金属箔１３の片
面には、ホットメルト系の接着剤層１４が所定の間隔を
設けて部分的に形成されている。次に、図８は、第２実
施例の放熱パイプの固定部分の断面図である。この図８
に示すように、放熱パイプ１１を放熱板１２に対して固
定し、さらに放熱パイプ１１と放熱板１２間の熱伝導性
を向上させるための金属箔１３として、図７に示した金
属箔１３が使用されている。このように部分的に接着剤
層１４が形成された金属箔１３を使用した場合には、金
属箔１３と放熱パイプ１１又は放熱板１２とが直接接触
する部分が生じ、ホットメルト系接着剤層１４がない分
だけ熱伝導性が向上する。なお、第２実施例において、
接着剤層１４の形成パターンは、格子状、縞状など適宜
選択することが可能である。(2) Second Embodiment FIGS. 7 and 8 are views showing a second embodiment of the present invention, and this second embodiment corresponds to the invention described in claim 3. First, FIG. 7 shows a metal foil used in the second embodiment. As shown in FIG. 7, a hot-melt adhesive layer 14 is partially formed on one surface of the metal foil 13 with a predetermined interval. Next, FIG. 8 is a sectional view of a fixed portion of the heat radiating pipe of the second embodiment. This Figure 8
As shown in FIG. 7, the metal foil 13 shown in FIG. 7 is used as the metal foil 13 for fixing the heat radiating pipe 11 to the heat radiating plate 12 and further improving the thermal conductivity between the heat radiating pipe 11 and the heat radiating plate 12. It is used. When the metal foil 13 on which the adhesive layer 14 is partially formed is used as described above, a portion where the metal foil 13 and the heat radiating pipe 11 or the heat radiating plate 12 are in direct contact with each other is generated, and the hot melt adhesive layer Since there is no 14, the thermal conductivity is improved. In the second embodiment,
The formation pattern of the adhesive layer 14 can be appropriately selected from a grid pattern, a striped pattern, or the like.
【００２２】（３）その他の実施例 本発明は以上のような実施例に限定されるものではな
く、各工程で用いられる部材の材質、形状等は適宜変更
可能である。たとえば、金属箔１３は銅箔、鉄箔など熱
伝導性の大きいものであればよい。また、接着剤層１４
を形成するホットメルト系の接着剤も、放熱パイプ１
１、放熱板１２および金属箔１３を十分に接着させるこ
とができるものであれば、その組成や溶解温度に制限は
ない。さらに、接着剤を溶融する手段として加熱ローラ
の代わりに、放熱パイプ１１の太さに応じた凹部を設け
た板状のプレスで加熱することも可能である。さらに、
最近冷蔵庫の破棄時における分解容易性を確保するため
に、発泡性断熱材と内箱あるいは外箱との接着を避ける
場合もある。そのような場合には、金属箔１３の表面に
剥離剤を塗布しておくことも可能である。(3) Other Examples The present invention is not limited to the above examples, and the materials, shapes, etc. of the members used in each step can be changed as appropriate. For example, the metal foil 13 may be copper foil, iron foil, or the like having a large thermal conductivity. In addition, the adhesive layer 14
The hot-melt adhesive that forms the
1. The composition and melting temperature are not limited as long as the heat radiation plate 12 and the metal foil 13 can be sufficiently adhered to each other. Further, as a means for melting the adhesive, instead of the heating roller, it is also possible to heat with a plate-shaped press provided with a recess corresponding to the thickness of the heat radiation pipe 11. further,
Recently, in order to ensure the ease of disassembling the refrigerator when it is discarded, the foaming heat insulating material may not be adhered to the inner box or the outer box. In such a case, it is also possible to apply a release agent to the surface of the metal foil 13.
【００２３】[0023]
【発明の効果】以上の通り、本発明によれば、放熱パイ
プと放熱板の固定に薄手で接着力に優れたホットメルト
系接着剤を使用したため、従来のように金属箔の片面に
それぞれ接着剤と剥離剤が塗布されたものに比較して、
放熱パイプから放熱板への熱伝導性をより良好に維持
し、放熱板に対する放熱パイプの固定をより安定的に行
うことが可能となる。その結果、放熱パイプからの放熱
効果が向上し、冷凍装置の効率化、小型化、省エネルギ
ー化を可能とした冷蔵庫を提供することができる。As described above, according to the present invention, since a thin hot-melt adhesive having excellent adhesive strength is used for fixing the heat radiating pipe and the heat radiating plate, each of them is adhered to one side of the metal foil as in the conventional case. Compared to the one coated with a release agent,
The thermal conductivity from the heat dissipation pipe to the heat dissipation plate can be better maintained, and the heat dissipation pipe can be fixed to the heat dissipation plate more stably. As a result, the heat radiation effect from the heat radiation pipe is improved, and it is possible to provide a refrigerator in which the efficiency, size and energy saving of the refrigeration system can be improved.
【図１】冷蔵庫の模式的な断面図。FIG. 1 is a schematic sectional view of a refrigerator.
【図２】冷蔵庫の放熱板に対する放熱パイプの固定状態
を示す平面図。FIG. 2 is a plan view showing a fixed state of a heat radiating pipe with respect to a heat radiating plate of a refrigerator.
【図３】従来技術で用いられた金属箔の一例を示す断面
図。FIG. 3 is a sectional view showing an example of a metal foil used in a conventional technique.
【図４】従来技術で用いられた金属箔の他の例を示す断
面図。FIG. 4 is a cross-sectional view showing another example of the metal foil used in the conventional technique.
【図５】本発明の第１実施例で使用する接着性を有する
金属箔の断面図。FIG. 5 is a cross-sectional view of an adhesive metal foil used in the first embodiment of the present invention.
【図６】図５の金属箔による放熱パイプと放熱板の固定
構造を示す断面図。6 is a cross-sectional view showing a fixing structure of a heat radiating pipe and a heat radiating plate using the metal foil of FIG.
【図７】本発明の第２実施例で使用する金属箔の断面
図。FIG. 7 is a sectional view of a metal foil used in a second embodiment of the present invention.
【図８】図７の金属箔による放熱パイプと放熱板の固定
構造を示す断面図。8 is a cross-sectional view showing a fixing structure of a heat radiating pipe and a heat radiating plate using the metal foil of FIG.
１…内箱 ２…外箱 ３…発泡性断熱材 ４…放熱板 ５…放熱パイプ ６…金属箔 ７…粘着剤層 ８…剥離紙 ９…剥離剤 １１…放熱パイプ １２…放熱板 １３…金属箔 １４…接着剤層 １５…加熱ローラ DESCRIPTION OF SYMBOLS 1 ... Inner box 2 ... Outer box 3 ... Foaming heat insulating material 4 ... Radiating plate 5 ... Radiating pipe 6 ... Metal foil 7 ... Adhesive layer 8 ... Release paper 9 ... Release agent 11 ... Radiating pipe 12 ... Radiating plate 13 ... Metal Foil 14 ... Adhesive layer 15 ... Heating roller
Claims (5)
剤層を形成した金属箔を、その接着剤層が放熱パイプお
よび放熱板に接触するように、放熱板上に配置した放熱
パイプを被覆し、その状態で接着剤層を溶融させること
により、金属箔を介して放熱パイプを放熱板に固定する
ことを特徴とする冷蔵庫の放熱板に対する放熱パイプの
固定方法。1. A metal foil having a solidified hot-melt adhesive layer formed on one surface thereof is covered with a heat radiating pipe arranged on the heat radiating plate so that the adhesive layer contacts the heat radiating pipe and the heat radiating plate. Then, the heat dissipation pipe is fixed to the heat dissipation plate via the metal foil by melting the adhesive layer in that state, and the heat dissipation pipe is fixed to the heat dissipation plate of the refrigerator.
体に均一に塗布したことを特徴とする請求項１記載の冷
蔵庫の放熱板に対する放熱パイプの固定方法。2. The method of fixing a heat radiating pipe to a heat radiating plate of a refrigerator according to claim 1, wherein the hot melt adhesive is uniformly applied to one side of the metal foil.
所定の間隔を設けて部分的に塗布したことを特徴とする
請求項１記載の冷蔵庫の放熱板に対する放熱パイプの固
定方法。3. The method for fixing a heat radiating pipe to a heat radiating plate of a refrigerator according to claim 1, wherein the hot melt adhesive is partially applied on one surface of the metal foil with a predetermined gap.
加熱ローラを使用することを特徴とする請求項１記載の
冷蔵庫の放熱板に対する放熱パイプの固定方法。4. The method of fixing a heat radiating pipe to a heat radiating plate of a refrigerator according to claim 1, wherein a heating roller is used as a means for melting the hot melt adhesive.
た空間部に充填された発泡性断熱材に直接接触している
ことを特徴とする請求項１記載の冷蔵庫の放熱板に対す
る放熱パイプの固定方法。5. The heat radiating plate of the refrigerator according to claim 1, wherein the surface of the metal foil is in direct contact with the foaming heat insulating material filled in the space formed by the outer box and the inner box. How to fix the heat dissipation pipe to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9260194A JPH07294091A (en) | 1994-04-28 | 1994-04-28 | Fixing method of heat radiation pipe against heat radiation plate of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9260194A JPH07294091A (en) | 1994-04-28 | 1994-04-28 | Fixing method of heat radiation pipe against heat radiation plate of refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07294091A true JPH07294091A (en) | 1995-11-10 |
Family
ID=14058980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9260194A Pending JPH07294091A (en) | 1994-04-28 | 1994-04-28 | Fixing method of heat radiation pipe against heat radiation plate of refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07294091A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006171272A (en) * | 2004-12-15 | 2006-06-29 | Shimadzu Corp | Device for injecting liquid crystal |
| JP2009074748A (en) * | 2007-09-21 | 2009-04-09 | Mitsubishi Electric Corp | Manufacturing method of refrigerator |
| CN102435037A (en) * | 2011-08-22 | 2012-05-02 | 合肥美的荣事达电冰箱有限公司 | Method for installing condenser in refrigerator and forming pedestal for sticking aluminum foil to condenser |
| JP2013053214A (en) * | 2011-09-02 | 2013-03-21 | Inaba Denki Sangyo Co Ltd | Connection tape and connecting structure of heat-insulation material using the same |
| CN106052205A (en) * | 2016-05-25 | 2016-10-26 | 合肥华凌股份有限公司 | Heat exchanger and refrigerating equipment |
| CN112074696A (en) * | 2018-12-07 | 2020-12-11 | 青岛海尔电冰箱有限公司 | Method for manufacturing suction pipe and refrigerator |
-
1994
- 1994-04-28 JP JP9260194A patent/JPH07294091A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006171272A (en) * | 2004-12-15 | 2006-06-29 | Shimadzu Corp | Device for injecting liquid crystal |
| JP2009074748A (en) * | 2007-09-21 | 2009-04-09 | Mitsubishi Electric Corp | Manufacturing method of refrigerator |
| CN102435037A (en) * | 2011-08-22 | 2012-05-02 | 合肥美的荣事达电冰箱有限公司 | Method for installing condenser in refrigerator and forming pedestal for sticking aluminum foil to condenser |
| JP2013053214A (en) * | 2011-09-02 | 2013-03-21 | Inaba Denki Sangyo Co Ltd | Connection tape and connecting structure of heat-insulation material using the same |
| CN106052205A (en) * | 2016-05-25 | 2016-10-26 | 合肥华凌股份有限公司 | Heat exchanger and refrigerating equipment |
| CN106052205B (en) * | 2016-05-25 | 2018-03-16 | 合肥华凌股份有限公司 | Heat exchanger and refrigeration plant |
| CN112074696A (en) * | 2018-12-07 | 2020-12-11 | 青岛海尔电冰箱有限公司 | Method for manufacturing suction pipe and refrigerator |
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