WO2020134993A1 - 隔热材料的制作方法、用该方法制作的隔热材料及冰箱 - Google Patents

隔热材料的制作方法、用该方法制作的隔热材料及冰箱 Download PDF

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WO2020134993A1
WO2020134993A1 PCT/CN2019/123953 CN2019123953W WO2020134993A1 WO 2020134993 A1 WO2020134993 A1 WO 2020134993A1 CN 2019123953 W CN2019123953 W CN 2019123953W WO 2020134993 A1 WO2020134993 A1 WO 2020134993A1
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Prior art keywords
protective film
aerogel
insulating material
manufacturing
heat insulating
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PCT/CN2019/123953
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English (en)
French (fr)
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稔则 杉木
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青岛海尔电冰箱有限公司
海尔智家股份有限公司
Aqua株式会社
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Publication of WO2020134993A1 publication Critical patent/WO2020134993A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls

Definitions

  • the present invention relates to a method for manufacturing a heat insulating material including a transparent monolith aerogel, and also relates to a heat insulating material manufactured using the manufacturing method.
  • the present invention also relates to a A refrigerator insulation material including a heat insulation material is manufactured using a method of manufacturing a transparent monolithic aerogel insulation material.
  • aerogel is a new material expected as a core material for heat insulation materials. Insulation materials using this aerogel as a core material and packaged with packaging materials have attracted attention.
  • Japanese Patent No. 5669617 discloses that a sealed container is filled with aerogel as a heat insulating material, and the sealed container is composed of an airtight film and the pressure in the sealed container is 101 to 104 Pa Scope.
  • an object of the present invention is to provide a method for manufacturing a heat insulating material using a transparent monolithic aerogel.
  • an object of the present invention is to provide a method for producing a heat insulating material, which fixes and evacuates a transparent monolithic aerogel in a protective film bag.
  • an object of the present invention is to provide a refrigerator in which a transparent heat-insulating material is provided between a transparent outer case and a transparent inner case, so that the contents in the refrigerator can be viewed from the outside.
  • the invention is a manufacturing method of heat insulation material, the heat insulation material includes a transparent monolithic aerogel, the aerogel is packed with a quadrilateral first and second protective film, and the heat insulation material
  • the aerogel is adsorbed and held by a pneumatic vacuum generator and is provided on the first protective film
  • the second is provided on the aerogel and the first protective film A protective film and thermally fusing three sides of the first protective film and the second protective film into a bag.
  • Monolithic aerogels are very brittle and therefore difficult to handle. If the aerogel is lifted mechanically, it may be damaged, so it can be lifted with a pneumatic vacuum generator.
  • the monolithic aerogel is not enclosed in a protective film made into a bag, but is provided after the first protective film and then the second protective film. Thereafter, the three sides of the first protective film and the second protective film are thermally welded and made into a bag, so that the monolithic aerogel is not damaged.
  • a part of the unwelded fourth side of the first protective film and the second protective film after being made into a bag is also thermally welded from the fourth side Vacuum is applied to the unwelded area of the, and the inside of the bag is decompressed to the following range: from atmospheric pressure to 10 kPa, and the fourth side is thermally welded and sealed.
  • the remaining one side of the first protective film and the second protective film are thermally welded and evacuated with a part remaining, so that the monolithic aerogel does not Get out of the bag.
  • the thermal insulation performance can be improved.
  • a flat plate is spread on the second protective film to press the aerogel.
  • the monolithic aerogel is pressed using a flat plate during vacuuming, so that the aerogel can be fixed at the positions of the first protective film and the second protective film.
  • the aerogel is provided on the cylindrical first protective film.
  • the first protective film in the cylindrical shape is provided with an aerogel and then made into a bag, no excessive force is applied to the aerogel. Therefore, the brittle aerogel is packed into the bag without damage.
  • the cylindrical shape of the first protective film facilitates mass production.
  • the heat insulating material manufactured by the method for manufacturing the heat insulating material described above is provided between the transparent outer box and the transparent inner box.
  • a transparent refrigerator can be provided, and a transparent heat-insulating material is provided between the transparent outer box and the transparent inner box, so that the storage in the refrigerator can be observed from the outside.
  • the present invention can provide a method for manufacturing a heat insulating material using a transparent monolithic aerogel.
  • the present invention can provide a method for manufacturing a heat insulating material, which fixes and evacuates a transparent monolithic aerogel in a bag of a protective film.
  • the present invention can provide a refrigerator in which a transparent heat-insulating material is provided between a transparent outer box and a transparent inner box, so that the contents in the refrigerator can be observed from the outside.
  • FIG. 1 is a schematic diagram of using a pneumatic vacuum generator to set aerogel on a protective film
  • FIG. 2a is a schematic diagram of providing a second protective film on the first protective film and the aerogel;
  • Figure 2b is a plan view of the three sides of the quadrilateral protective film welded into aerogel and made into a bag;
  • FIG. 3 is a plan view showing a state where the remaining one side of the first protective film and the second protective film are thermally welded with a part remaining;
  • FIG. 4 is a schematic diagram showing a flat plate on the aerogel for pressing
  • FIG. 5 is a front view of a refrigerator using a transparent insulating material manufactured by the manufacturing method of the insulating material of the present invention
  • FIG. 6 is a side view of a refrigerator using a transparent heat insulating material manufactured by the method for manufacturing a heat insulating material of the present invention.
  • FIG. 1 is a schematic diagram showing the installation of aerogel on a protective film using an air vacuum generator (air).
  • Fig. 2a is a schematic view of a second protective film provided on the first protective film and the aerogel
  • Fig. 2b is a plan view of the three protective sides of the quadrilateral protective film welded into the aerogel and made into a bag. The process of filling the aerogel of the present invention into a bag will be described with reference to FIGS. 1 and 2.
  • the transparent monolithic aerogel 101 is adsorbed and held on the first protective film 103 using a pneumatic vacuum generator 105.
  • the transparent monolithic aerogel 101 is, for example, an aerogel having an average pore size of 40 nm or less and a porosity exceeding 80%.
  • the aerogel 101 may be a square with a side of 20 cm and a thickness of about 5 mm. This size is only an example, and the transparent monolithic aerogel can be larger.
  • the size of the first protective film 103 exceeds the periphery of the monolithic aerogel 101.
  • the size of the first protective film 103 is determined in consideration of the thickness of the aerogel 101 and the portion to be thermally welded in the subsequent process.
  • the transparent first protective film 103 may be, for example, a laminate including high-density polyethylene, medium-density polyethylene, low-density polyethylene, and linear low-density polyethylene having a film thickness of 30 ⁇ m or more and 50 ⁇ m or less. Or unstretched polypropylene; transparent vapor-deposited film with a thickness of 12 ⁇ m or more and 18 ⁇ m or less; and biaxially stretched polypropylene, biaxially stretched nylon or polyethylene terephthalate with a thickness of 12 ⁇ m or more and 28 ⁇ m or less ester.
  • the non-transparent first protective film 103 may be, for example, a laminate including a high-density polyethylene, a medium-density polyethylene, a low-density polyethylene, a linear low-density polymer having a film thickness of 30 ⁇ m or more and 50 ⁇ m or less.
  • the first protective film 103 is transparent, a transparent heat insulating material can be produced. In addition, even if the first protective film 103 is opaque, since the aerogel 101 has high heat insulation, it is possible to produce a heat insulation material with good heat insulation.
  • the first protective film 103 preferably has a cylindrical shape. If the aerogel 101 is provided on the cylindrical first protective film 103 and then made into a bag, no excessive force is applied to the aerogel 101. Therefore, the brittle aerogel 101 is packed into a bag without damage; in addition, the first protective film 103 is cylindrical, which is advantageous for mass production.
  • the pneumatic vacuum generator 105 sucks air to adsorb and hold the aerogel 101. Since the aerogel 101 is light, it may not require such a large suction force. In this way, there will be no disadvantageous possibility that the mechanical force destroys the aerogel 101.
  • a second protective film 107 is provided on the first protective film 103 and the aerogel 101.
  • the second protective film 107 only needs to have four sides, and preferably has a four-sided shape, and more preferably a square shape.
  • the size of the second protective film 107 is larger than the circumference of the aerogel 101.
  • the size of the second protective film 107 is determined in consideration of the thickness of the aerogel 101 and the portion to be thermally welded in the subsequent process.
  • the second protective film 107 has the same structure as the first protective film 103.
  • a bag is produced in a state where three sides of the first protective film 103 and the second protective film 107 of the quadrangle are welded and then put into the aerogel 101. Into bags.
  • the first side 109, the second side 111, and the third side 113 are thermally welded and indicated by a solid line.
  • the fourth side 115 is not thermally welded, so it is represented by a dotted line.
  • the monolithic aerogel 101 is very brittle and therefore difficult to handle. If the aerogel 101 is mechanically lifted, the aerogel 101 may be damaged. Therefore, the pneumatic vacuum generator 105 is used for lifting.
  • the monolithic aerogel 101 is not enclosed in a protective film made into a pouch state, but after being provided on the first protective film 103, a second protective film 107 is provided thereon; The three sides of the protective film 103 and the second protective film 107 are thermally welded and made into a bag, so that the monolithic aerogel 101 is not damaged.
  • the present invention can provide a method for manufacturing a heat insulating material using a transparent monolithic aerogel 101.
  • FIG. 3 is a plan view showing a state where the remaining one side of the first protective film 103 and the second protective film 107 is thermally welded with a part remaining.
  • FIG. 4 is a schematic view showing that aerogel 101 is placed on a flat plate and pressed. 3, the process of evacuating the bag containing the aerogel 101 will be described.
  • the first side 109, the second side 111, and the third side 113 are thermally welded to form a part of the unwelded fourth side 115 of the first protective film 103 and the second protective film 107 after being pouched.
  • 117 is also thermally welded, and the unheated welded portion 119 of the fourth side 115 is indicated by a dotted line.
  • a vacuum can be drawn from the unheated place 119 of the fourth side 115.
  • the remaining one side of the first protective film 103 and the second protective film 107 is thermally welded and evacuated while leaving a part so that the monolithic aerogel 101 does not come out of the bag.
  • a flat plate 121 may be placed on the second protective film 107 to press the aerogel 101 onto the mounting table 123 for pressing.
  • the aerogel 101 can be fixed at the positions of the first protective film 103 and the second protective film 107.
  • the invention can provide a method for manufacturing a heat insulating material, which can fix the transparent monolithic aerogel 101 in the bag of the protective film and evacuate it.
  • Fig. 5 is a front view of a refrigerator 501 using the transparent heat insulating material of the present invention.
  • 6 is a side view of a refrigerator 501 using the transparent heat insulating material of the present invention. 5 and 6, the application of the transparent heat insulating material of the present invention to the refrigerator 501 will be described.
  • the refrigerator 501 includes a refrigerator compartment 503, a vegetable compartment 504 and a freezer compartment 505.
  • the door 513 of the refrigerator compartment 503 has a handle 507.
  • the door of the freezer compartment 505 is provided with a handle.
  • the refrigerator compartment 503 includes an outer box 509 and an inner box 511 made of transparent glass or resin.
  • the freezer compartment 505 also includes a transparent outer box and a transparent inner box.
  • a plurality of transparent heat insulating materials 515 are provided in the door body 513.
  • Each transparent heat insulation material is a square with a size of 20 square centimeters. Therefore, in the door body 513, the heat insulation material 515 is arranged in the longitudinal and lateral directions of the refrigerator 501 and is covered with transparent heat insulation material.
  • transparent heat insulation material not all heat insulating materials 515 are shown, but representative transparent heat insulating materials are shown.
  • the door body of the refrigerator 501 of this embodiment is made of transparent glass or resin. Therefore, through the transparent door body and the transparent heat insulating material, the stored objects in the refrigerator can be viewed through the door body.
  • the door of the freezer compartment 505 is also made of transparent glass or resin, and is also covered with a transparent heat insulating material. Therefore, for the freezer compartment 505, it is possible to pass through the door of the freezer compartment 505 to view the stored items in the refrigerator.
  • a transparent heat insulating material 519 is provided between the inner box and the outer box on the left side 517 of the refrigerator 501.
  • the left side surface 517 is arranged in the longitudinal and lateral directions of the refrigerator 501 and covered with a plurality of transparent heat insulating materials 519.
  • the right side is similarly arranged in the longitudinal and lateral directions of the refrigerator 501 and covered with a plurality of transparent heat insulating materials.
  • the refrigerator 501 of the present embodiment is provided with a transparent heat insulating material 523 between the transparent inner box and the transparent outer box, it is possible to view the stored items in the refrigerator from the side.
  • a transparent heat insulating material 523 may also be provided on the back 521 of the refrigerator 501.
  • the back surface 521 of the refrigerator 501 is provided with structures such as multiple air ducts, an opaque condenser 537, an evaporator 541, and a pipe 539.
  • the back surface 521 of the refrigerator 501 is often installed toward the wall, it may not be transparent.
  • a transparent heat insulating material 527 may be provided on the top plate 525. If it is a refrigerator with a low height, the contents stored in the refrigerator can be viewed from above. As shown in FIGS. 5 and 6, a transparent heat insulating material 531 may be provided on the bottom plate 529.
  • the intermediate partition 533 uses a transparent member, and a transparent heat insulating material 535 may be provided in the intermediate partition.
  • the refrigerator compartment 503 and the vegetable compartment 504 are partitioned by transparent glass or resin. Therefore, the refrigerator compartment 503, the vegetable compartment 504, and the freezer compartment 505 can recognize each other's contents in the refrigerator.
  • the refrigerator 501 of this embodiment includes an inner box and an outer box, but it is also possible to omit the inner box and install a heat insulating material in the refrigerator.
  • a plurality of heat insulating materials are arranged, but in the monolithic aerogel 101 than the refrigerator 501 When the door body and outer wall are large enough, it can also be used as a heat insulation material.
  • the refrigerator 501 provided by the present invention uses the transparent monolithic aerogel 101 as a heat insulating material.
  • the present invention can provide a transparent refrigerator 501.
  • a transparent heat insulating material between the transparent outer box and the transparent inner box the stored contents in the refrigerator can be viewed from the outside.
  • the conventional transparent refrigerator is partitioned by laminated glass, so it is heavy.
  • the aerogel 101 is very light, so the weight of the transparent refrigerator 501 can be reduced.
  • the invention can be used for heat insulation materials needed in refrigerators and other places.
  • it can be used for windows and refrigerators that require transparent properties.

Abstract

提供一种隔热材料的制作方法、用该方法制作的隔热材料及冰箱。所述隔热材料（515，519， 523，527，531，535）包括透明的整料状的气凝胶（101），该气凝胶（101）以第一保护膜（103）及第二保护膜（107）进行了包装，所述隔热材料（515，519， 523，527，531，535）的制作方法中，将气凝胶（101）通过气动真空发生器（105）进行吸附并保持且设置在第一保护膜（103）上；在气凝胶（101）以及第一保护膜（103）上设置第二保护膜（107），并将第一保护膜（103）和第二保护膜（107）的三条边进行热熔接并制作成袋，不会破坏整料状的气凝胶（101），实现将透明的整料状的气凝胶（101）应用于隔热材料（515，519， 523，527，531，535）。

Description

隔热材料的制作方法、用该方法制作的隔热材料及冰箱 技术领域
本发明涉及一种包括透明的整料状(monolith)的气凝胶的隔热材料的制作方法，还涉及一种使用所述制作方法制作而成的隔热材料，另外，本发明还涉及一种包括隔热材料的冰箱隔热材料是使用包括透明的整料状的气凝胶隔热材料的制作方法而制作的。
背景技术
以冰箱为首，在各个领域盛行开发隔热材料，其中，气凝胶是作为隔热材料的芯材而被期待的新材料。以该气凝胶作为芯材且以包装材包装后的隔热材料受到关注。
在日本专利第5669617号公报的专利文献中，公开了将气凝胶填充于密封容器来作为隔热材料，另外，公开了密封容器由气密性薄膜组成以及密封容器内的压力处于101～104Pa的范围。
另一方面，近年，在气凝胶中还得到了透明的整料状的气凝胶，这样的气凝胶是多孔质，比重轻。另外，气凝胶若细孔径小至数十纳米且气孔率超过数十百分数，则将得到透明且隔热性优异的气凝胶。现在，关于这样的透明的整料状的气凝胶，得到了面积数十平方厘米且厚度数毫米的气凝胶。
(发明要解决的问题)
然而，针对采用透明的整料状的气凝胶的隔热材料的制作方法，并未对其充分探讨。气凝胶具有非常脆的性质。另外，虽然为了提高气凝胶的隔热性而需要设为真空隔热材料，但并未找到适当的真空度。
发明内容
为此，本发明的目的是，提供采用透明的整料状的气凝胶的隔热材料的制作方法。另外，本发明的目的是，提供一种隔热材料的制作方法，将保护膜的袋之中的透明的整料状的气凝胶进行固定并抽真空。另外，本发明的目的是，提供一种冰箱，通过在透明的外箱与透明的内箱之间设置有透明的隔热材料从而能从外部观察冰箱内的保存物。
(用于解决问题的技术方案)
本发明是一种隔热材料的制作方法，所述隔热材包括透明的整料状的气凝胶，该气凝胶以四边形的第一以及第二保护膜进行了包装，在隔热材料的制作方法中，将所述气凝胶通过气动真空发生器进行吸附并保持且设置在所述第一保护膜上，在所述气凝胶以及所述第一保护膜上设置所述第二保护膜，并将所述第一保护膜和所述第二保护膜的三条边进行热熔接并制作成袋。
整料状的气凝胶非常脆，因此难以处理。气凝胶若以机械进行抬升则有可能损坏，因此能以 气动真空发生器来抬升。整料状的气凝胶不是被封入至制作成袋状态的保护膜，而是在设置于第一保护膜后，设置第二保护膜。其后，通过将第一保护膜和第二保护膜的三条边进行热熔接并制作成袋，从而不会破坏整料状气凝胶。
本发明的隔热材料的制作方法中，还将制作成袋后的所述第一保护膜和所述第二保护膜的未熔接的第四边的一部分进行热熔接，从所述第四边的未熔接之处抽真空，将袋的内部减压为如下范围：大气压至10kPa之间，并将所述第四边进行热熔接且密封。
本发明中，在上述的特征的基础上，针对第一保护膜与第二保护膜的剩余的一条边，以保留一部分的方式进行热熔接并抽真空，从而整料状的气凝胶不会从袋中出来。另外，通过将气凝胶的包装内进行适度地减压，能提高隔热性能。
本发明的隔热材料的制作方法中，在所述抽真空的工序中，在所述第二保护膜之上铺平板来按压所述气凝胶。
本发明中，在上述的特征的基础上，在抽真空时使用平板来按压整料状的气凝胶，从而能确定气凝胶在第一保护膜以及第二保护膜的位置来进行固定。
本发明的隔热材料的制作方法中，所述气凝胶设置在筒状的所述第一保护膜上。
由于在筒状的第一保护膜设置气凝胶后进行制作成袋，因此不会对气凝胶施加多余的力。故而，将脆的气凝胶不带来损坏地装入袋中。另外，第一保护膜为筒状有利于大量生产。
本发明的冰箱中，在透明的外箱与透明的内箱之间设置有以上述记载的隔热材料的制作方法制作出的隔热材料。
能提供一种透明的冰箱，通过在透明的外箱与透明的内箱之间设置有透明的隔热材料而能从外部观察冰箱内的保存物。
(发明效果)
本发明能提供采用透明的整料状的气凝胶的隔热材料的制作方法。另外，本发明能提供一种隔热材料的制作方法，将保护膜的袋之中的透明的整料状的气凝胶进行固定并抽真空。另外，本发明能提供一种冰箱，通过在透明的外箱与透明的内箱之间设置有透明的隔热材料，从而能从外部观察冰箱内的保存物。
附图说明
图1是使用气动真空发生器将气凝胶设置在保护膜上的示意图；
图2a是在第一保护膜和气凝胶上设置第二保护膜的示意图；
图2b是将四边形的保护膜的三条边进行熔接后装入气凝胶进行制作成袋的俯视图；
图3是表示将第一保护膜和第二保护膜的剩余一条边以保留一部分的方式进行热熔接的状 态俯视图；
图4是表示在气凝胶上铺平板进行按压的示意图；
图5是采用以本发明的隔热材料的制作方法制作出的透明的隔热材料的冰箱的主视图；
图6是采用以本发明的隔热材料的制作方法制作出的透明的隔热材料的冰箱的侧视图。
标号说明：
101，气凝胶；103，第一保护膜；105，气动真空发生器；107，第二保护膜；109，第一边；111，第二边；113，第三边；115，第四边；117，第四边的一部分；119，第四边的未热熔接之处；121，平板；123，载置台；501，冰箱；503，冷藏室；504，蔬菜室；505，冷冻室；507，把手；509，外箱；511，内箱；513，门体；515，隔热材料；517，左侧面；519，隔热材料；521，背面；523，隔热材料；525，顶板；527，隔热材料；529，底板；531，隔热材料；533，中间隔板；535，隔热材料；537，冷凝器；539，配管；541，蒸发器
具体实施方式
以下，参照附图来说明用于实施本发明的各种实施方式。考虑到要点的说明或者理解的容易性，在不同附图中为了方便将标号设为相同来表示。考虑到要点的说明或者理解的容易性，为了方便，将实施方式分开表示，但不同实施方式所示的结构能进行局部的置换或者组合。在第二实施方式以后考虑到第一实施方式和要点的说明或者理解的容易性，为了方便，将实施方式分开表示，但不同实施方式所示的结构能进行局部的置换或者组合。
(将气凝胶装入袋中的工序)
图1是表示使用气动真空发生器(air vacuum)将气凝胶设置在保护膜上的示意图。图2a是在第一保护膜和气凝胶上设置第二保护膜的示意图，图2b是将四边形的保护膜的三条边进行熔接后装入气凝胶进行制作成袋的俯视图。参照图1以及图2来说明将本发明的气凝胶装入袋中的工序。
如图1所示，使用气动真空发生器105将透明的整料状的气凝胶101进行吸附并保持且设置在第一保护膜103上。透明的整料状的气凝胶101例如是平均细孔为40nm以下且气孔率超过80％的气凝胶。另外，气凝胶101可以是一边为20cm的正方形，且厚度为5mm左右。该大小只是例示，透明的整料状的气凝胶还可以更大。
第一保护膜103的大小为超过整料状的气凝胶101的四周。第一保护膜103的大小是考虑气凝胶101的厚度以及在后工序中热熔接的部分来决定的。
透明的第一保护膜103例如可以设为层叠体，该层叠体包括：膜厚为30μm以上且50μm以下的高密度聚乙烯、中密度聚乙烯、低密度聚乙烯、直链状低密度聚乙烯或者未拉伸聚丙烯；膜 厚为12μm以上且18μm以下的透明蒸镀薄膜；以及膜厚为12μm以上且28μm以下的双向拉伸聚丙烯、双向拉伸尼龙或者聚对苯二甲酸乙二醇酯。
非透明的第一保护膜103例如可以设为层叠体，该层叠体包括：膜厚为30μm以上且50μm以下的高密度聚乙烯、中密度聚乙烯、低密度聚乙烯、直链状低密度聚乙烯或者未拉伸聚丙烯；膜厚为12μm以上且18μm以下的镀铝薄膜或者膜厚为6.5μm以上且9μm以下的铝箔；以及膜厚为12μm以上且28μm以下的双向拉伸聚丙烯、双向拉伸尼龙或者聚对苯二甲酸乙二醇酯。
若第一保护膜103透明，则能制作透明的隔热材料。另外，即使第一保护膜103不透明，由于气凝胶101的隔热性高，因此也能制作隔热性好的隔热材料。
另外，第一保护膜103优选成为筒状。若在筒状的第一保护膜103上设置气凝胶101后进行制作成袋，则不会对气凝胶101施加多余的力。因此，将脆的气凝胶101不造成损坏而装入袋中；另外，第一保护膜103为筒状有利于大量生产。
气动真空发生器105吸取空气来将气凝胶101进行吸附并保持。由于气凝胶101轻，因此可以无需那么大的吸力。如此，将没有如下不利可能：机械性的力破坏气凝胶101。
接下来，如图2a所示，在第一保护膜103和气凝胶101上设置第二保护膜107。
第二保护膜107只要有四条边即可，优选为四边形状，进而优选为正方形。第二保护膜107的大小为超过气凝胶101的周围。第二保护膜107的大小是考虑气凝胶101的厚度和在后工序中热熔接的部分来决定的。第二保护膜107具有与第一保护膜103相同的结构。
接下来，如图2b所示，在如下状态下进行制作成袋，该状态是将四边形的第一保护膜103和第二保护膜107的三条边进行熔接后装入气凝胶101的状态制作成袋。
第一边109、第二边111、第三边113被热熔接，以实线表示。第四边115未被热熔接，因此以虚线表示。
整料状的气凝胶101非常脆，因此难以处理。若以机械进行抬升气凝胶101则有可能损坏气凝胶101，因此以气动真空发生器105来抬升。整料状的气凝胶101不是被封入至制作成袋状态的保护膜中，而是在设置于第一保护膜103后，在其上设置第二保护膜107；其后，通过将第一保护膜103和第二保护膜107的三条边进行热熔接并制作成袋，从而不会破坏整料状气凝胶101。本发明可以提供采用了透明的整料状的气凝胶101的隔热材料的制作方法。
(将装入有气凝胶的袋抽真空的工序)
图3是表示将第一保护膜103和第二保护膜107的剩余一条边以保留一部分的方式进行热熔接的状态俯视图。图4是表示在气凝胶101放置平板进行按压的示意图。参照图3，说明将放入有气凝胶101的袋抽真空的工序。
如图3所示，第一边109、第二边111以及第三边113被热熔接，制作成袋后的第一保护膜103和第二保护膜107的未熔接的第四边115的一部分117也被热熔接，第四边115的未热熔接之处119以虚线来表示。
可以从第四边115的未热熔接之处119抽真空。通过将第一保护膜103和第二保护膜107的剩余的一条边以保留一部分的方式进行热熔接并抽真空，从而整料状的气凝胶101不会从袋中出来。
在抽真空时，如图4所示，可以在第二保护膜107之上放置平板121，将气凝胶101压贴至载置台123进行按压。通过在抽真空时以平板来按压整料状的气凝胶101，能确定气凝胶101在第一保护膜103以及第二保护膜107的位置来进行固定。
接下来，从第四边115的未热熔接之处119抽真空，将袋的内部减压为大气压至10kPa之间。最后，将第四边115进行热熔接并密封。通过将气凝胶101的包装内适度地减压，能提高隔热性能。
本发明能提供一种隔热材料的制作方法，可以将保护膜的袋之中的透明的整料状的气凝胶101进行固定并抽真空。
(将本发明的透明的隔热材料应用于冰箱的例子)
图5是采用本发明的透明的隔热材料的冰箱501的主视图。图6是采用本发明的透明的隔热材料的冰箱501的侧视图。参照图5以及图6的实施例，来说明将本发明的透明的隔热材料在冰箱501的应用。
如图5、图6所示，冰箱501包括冷藏室503、蔬菜室504和冷冻室505。冷藏室503的门体513具有把手507。虽未图示，但还在冷冻室505的门体设置把手。冷藏室503包括由透明的玻璃或者树脂构成的外箱509和内箱511。冷冻室505同样包括透明的外箱和透明的内箱。
如图5所示，在门体513之中设置多个透明的隔热材料515。每个透明的隔热材料呈大小为20平方厘米的正方形，因此在门体513中，在冰箱501的纵向与横向上排列并铺满有透明的隔热材料515。在此，并非将全部的隔热材料515进行了图示，而是绘示了代表性的透明的隔热材料。
本实施方式的冰箱501的门体由透明的玻璃或者树脂构成。因此，通过透明的门体和透明的隔热材料，能穿过门体来视认冰箱内的保存物。虽未图示，但冷冻室505的门体同样由透明的玻璃或者树脂构成，同样被透明的隔热材料铺满。因此，针对冷冻室505，能穿过其门体来视认冰箱内的保存物。
如图5和图6所示，在冰箱501的左侧面517的内箱与外箱之间设置有透明的隔热材料519。 如图6所示，左侧面517与门体513同样，在冰箱501的纵向与横向上排列并铺满有多个透明的隔热材料519。虽然在此描述了左侧面，但右侧面也同样，在冰箱501的纵向与横向上排列并铺满有多个透明的隔热材料。
本实施方式的冰箱501由于在透明的内箱与透明的外箱之间设置有透明的隔热材料523，因此还能从侧面视认冰箱内的保存物。
如图6所示，还可以在冰箱501的背面521设置有透明的隔热材料523。冰箱501的背面521设置有多风道等构造物、非透明的冷凝器537、蒸发器541以及配管539。另外，冰箱501的背面521多数情况下朝向壁进行设置，故而，可以不设为透明。
如图5以及图6所示，还可以在顶板525设置透明的隔热材料527。若为高度低的冰箱，则能从上面视认冰箱内的保存物。如图5以及图6所示，还可以在底板529设置透明的隔热材料531。
如图6所示，中间隔板533使用透明的构件，还可以在中间隔板中设置透明的隔热材料535。另外，冷藏室503与蔬菜室504之间由透明的玻璃或者树脂进行分隔。因此，冷藏室503、蔬菜室504以及冷冻室505能视认彼此的冰箱内的保存物。
本实施方式的冰箱501包括内箱和外箱，但还能采用省略内箱而将隔热材料设置于冰箱内的方式。另外，虽然例示了在透明的整料状的气凝胶101比冰箱501的门体、外壁小时，将隔热材料排列多个的情况，但在整料状的气凝胶101比冰箱501的门体、外壁足够大的情况下，还能作为一个隔热材料进行使用。
如此，本发明提供的冰箱501，将透明的整料状的气凝胶101用于隔热材料。尤其，本发明能提供透明的冰箱501，通过在透明的外箱与透明的内箱之间设置有透明的隔热材料，从而能从外部视认冰箱内的保存物。
另外，现有的透明的冰箱由层叠玻璃进行分隔，故而重量重。气凝胶101非常轻，因此能减轻透明的冰箱501的重量。
(工业实用性)
本发明能用于冰箱等各处所需要的隔热材料。尤其能用于需要透明性质的窗、冰箱。

Claims (10)

  1. 一种隔热材料的制作方法，其特征在于，所述隔热材料包括透明的整料状的气凝胶，该气凝胶以四边形的第一保护膜以及第二保护膜进行了包装，所述隔热材料的制作方法中，
    将所述气凝胶通过气动真空发生器进行吸附并保持且设置在所述第一保护膜上；
    在所述气凝胶以及所述第一保护膜上设置所述第二保护膜，
    并将所述第一保护膜和所述第二保护膜的三条边进行热熔接并制作成袋。
  2. 根据权利要求1所述的隔热材料的制作方法，其特征在于，还包括：
    将制作成袋后的所述第一保护膜和所述第二保护膜的未熔接的第四边的一部分进行热熔接；
    从所述第四边的未熔接之处抽真空，将袋的内部减压为大气压至10kPa之间；
    并将所述第四边进行热熔接且密封。
  3. 根据权利要求2所述的隔热材料的制作方法，其特征在于，在所述抽真空的工序中，在所述第二保护膜之上铺平板来按压所述气凝胶。
  4. 根据权利要求1至3中任一项所述的隔热材料的制作方法，其特征在于，所述气凝胶设置在筒状的所述第一保护膜上。
  5. 根据权利要求1所述的隔热材料的制作方法，其特征在于，所述气凝胶的平均细孔为40nm以下且气孔率超过80％。
  6. 根据权利要求1所述的隔热材料的制作方法，其特征在于，所述第一保护膜和所述第二保护膜均设为层叠体，所述层叠体包括：膜厚为30μm以上且50μm以下的高密度聚乙烯、中密度聚乙烯、低密度聚乙烯、直链状低密度聚乙烯或者未拉伸聚丙烯；膜厚为12μm以上且18μm以下的透明蒸镀薄膜；以及膜厚为12μm以上且28μm以下的双向拉伸聚丙烯、双向拉伸尼龙或者聚对苯二甲酸乙二醇酯。
  7. 根据权利要求1所述的隔热材料的制作方法，其特征在于，所述第一保护膜和所述第二保护膜均设为层叠体，所述层叠体包括：膜厚为30μm以上且50μm以下的高密度聚乙烯、中密度聚乙烯、低密度聚乙烯、直链状低密度聚乙烯或者未拉伸聚丙烯；膜厚为12μm以上且18μm以下的镀铝薄膜或者膜厚为6.5μm以上且9μm以下的铝箔；以及膜厚为12μm以上且28μm以下的双向拉伸聚丙烯、双向拉伸尼龙或者聚对苯二甲酸乙二醇酯。
  8. 一种隔热材料，其特征在于，所述隔热材料以权利要求1至7中任一项所述的隔热材料的制作方法制作而成。
  9. 一种冰箱，其特征在于，在透明的外箱与透明的内箱之间设置隔热材料，所述隔热材料以权利要求1至7中任一项所述的隔热材料的制作方法制作而成。
  10. 根据权利要求9所述的冰箱，其特征在于，所述外箱和所述内箱由玻璃或者树脂构成。
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JP2001287291A (ja) * 2000-04-10 2001-10-16 Dainippon Printing Co Ltd 断熱材および断熱部材
CN101680222A (zh) * 2007-03-23 2010-03-24 伯戴尔股份有限公司 建筑膜结构体及其制造方法
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