WO2023125165A1 - 冰箱门体及其制备方法 - Google Patents
冰箱门体及其制备方法 Download PDFInfo
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- WO2023125165A1 WO2023125165A1 PCT/CN2022/140436 CN2022140436W WO2023125165A1 WO 2023125165 A1 WO2023125165 A1 WO 2023125165A1 CN 2022140436 W CN2022140436 W CN 2022140436W WO 2023125165 A1 WO2023125165 A1 WO 2023125165A1
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- WIPO (PCT)
- Prior art keywords
- door
- accommodating space
- refrigerator
- gas
- layer
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 45
- 230000008569 process Effects 0.000 claims abstract description 31
- 239000010410 layer Substances 0.000 claims description 42
- 239000000463 material Substances 0.000 claims description 25
- 230000004888 barrier function Effects 0.000 claims description 21
- 229910052782 aluminium Inorganic materials 0.000 claims description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 19
- 239000011241 protective layer Substances 0.000 claims description 14
- 239000004677 Nylon Substances 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 125000004122 cyclic group Chemical group 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 2
- 239000004964 aerogel Substances 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 11
- 238000002360 preparation method Methods 0.000 description 11
- 230000004308 accommodation Effects 0.000 description 8
- 230000006872 improvement Effects 0.000 description 8
- 238000007789 sealing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 238000005187 foaming Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229920005830 Polyurethane Foam Polymers 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 239000011496 polyurethane foam Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 210000000497 foam cell Anatomy 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
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- 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
- F25D23/02—Doors; Covers
-
- 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
- F25D23/02—Doors; Covers
- F25D23/028—Details
-
- 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
- F25D2201/00—Insulation
- F25D2201/10—Insulation with respect to heat
- F25D2201/12—Insulation with respect to heat using an insulating packing material
-
- 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
- F25D2323/00—General constructional features not provided for in other groups of this subclass
- F25D2323/02—Details of doors or covers not otherwise covered
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Definitions
- the invention relates to the technical field of refrigerator manufacturing, in particular to a refrigerator door body and a preparation method thereof.
- the door body of the refrigerator is generally fixed together by the shell, the door liner and other components through polyurethane foam, and the polyurethane not only plays the role of fixing and bonding, but also plays the role of heat preservation.
- Polyurethane foam materials are generally obtained by foaming isocyanate, polyol and foaming agent.
- the polyurethane foam has a high thermal conductivity, so the insulation performance of the door body prepared by using it is often not very good; moreover, its preparation is more complicated and requires a special foaming mold and For foaming equipment, the equipment investment cost is large, the production cost is high, and the process is relatively complicated.
- the existing refrigerator door body prepared by foaming polyurethane has the problems of high manufacturing cost and poor thermal insulation performance of the door body.
- the present invention provides a new refrigerator door preparation method.
- This preparation method prepares a refrigerator door with an accommodating space, and then fills the accommodating space with air condensation rubber blanket, when the accommodating space is filled with airgel felt, and then fill the accommodating space with low thermal conductivity gas, when the low thermal conductivity gas in the accommodating space is compared with the total gas in the accommodating space
- the proportion is greater than the set threshold, and the air pressure in the accommodating space is greater than or equal to a standard atmospheric pressure, and the accommodating space is sealed to form a refrigerator door.
- the refrigerator door body prepared by this method solves the problems of high manufacturing cost and poor thermal insulation performance of the door body.
- one embodiment of the present invention provides a refrigerator door preparation method, which includes:
- the preset condition is: the ratio X of the low thermal conductivity gas to the total gas in the accommodating space is greater than a set threshold and the air pressure P in the accommodating space is greater than or equal to 1 standard atmospheric pressure value;
- the process of extracting the gas in the accommodation space specifically includes: closing the air filling hole of the accommodation space, opening the air extraction hole of the accommodation space, and The air hole extracts the gas in the accommodating space;
- the process of filling the accommodating space with the low thermal conductivity gas specifically includes: opening the gas filling hole of the accommodating space, and filling the low thermal conductivity gas into the accommodating space through the gas filling hole.
- the process of manufacturing a refrigerator door body with accommodating space includes:
- the door liner is connected with the door shell to form the refrigerator door body with accommodating space.
- the process of connecting the door liner with the door shell to form the refrigerator door body with accommodating space specifically includes:
- Glue is applied to the connection between the door liner and the door shell, and the glue is any one of two-component polyurethane, epoxy silicon and organic silicon;
- the door lining is glued to the door shell to form the refrigerator door body with accommodating space.
- it further includes: forming multiple layers of barrier material on the surface of the door liner opposite to the door shell.
- the specific process of generating a multi-layer barrier material on the surface of the door liner opposite to the door shell includes:
- a multi-layer protective layer is grown on the aluminum film, and the material of each layer in the multi-layer protective layer is any one of nylon and PET plastic.
- the filling the airgel blanket into the accommodating space specifically includes:
- FIG. 1 Another embodiment of the present invention also provides a refrigerator door body, including a door shell, a door liner and an airgel felt, characterized in that the door liner is fixedly connected to the door shell to form an airtight accommodating space.
- the airgel blanket is filled in the accommodating space, and the accommodating space is also filled with a gas with low thermal conductivity, and the ratio X of the low thermal conductivity gas to the total gas in the accommodating space is greater than a threshold value.
- the surface of the door liner opposite to the door shell is covered with a multi-layer barrier material
- the multi-layer barrier material includes an aluminum material attached close to the door liner.
- the barrier layer and the multi-layer protective layer covered on the aluminum barrier layer, the material of each layer in the multi-layer protective layer is any one of nylon and PET plastics.
- the present invention has the following beneficial effects:
- the refrigerator door body prepared by the preparation method of the invention has good thermal insulation performance.
- Fig. 1 is the flow chart of the refrigerator door preparation method in one embodiment of the present invention
- Fig. 2 is a structural schematic diagram of a refrigerator door in another embodiment of the present invention.
- Fig. 3 is a front view of a refrigerator door in another embodiment of the present invention.
- Fig. 4 is a schematic diagram of the door liner structure of the refrigerator door in another embodiment of the present invention.
- Fig. 5 is an enlarged view at P in Fig. 4 .
- the present invention mainly relates to a method for preparing a refrigerator door, which includes:
- the preset condition is: the ratio X of the low thermal conductivity gas to the total gas in the accommodating space is greater than a set threshold and the air pressure P in the accommodating space is greater than or equal to 1 standard atmospheric pressure value;
- the threshold value of the ratio X of the low thermal conductivity gas to the total gas is set to 90%, that is, when the ratio of the low thermal conductivity gas to the total gas in the accommodating space is greater than 90% and the When the air pressure P in the accommodating space is greater than or equal to 1 standard atmospheric pressure, the prepared door body can achieve a good thermal insulation effect. Therefore, when this condition is met, the accommodating space is sealed. On the contrary, when the ratio of the low thermal conductivity gas to the total gas in the accommodating space is less than or equal to 90%, or the air pressure P in the accommodating space is less than 1 standard atmospheric pressure value, it is necessary to continue to repeat all the steps in the cycle. or partial actions.
- the process of extracting the gas in the accommodating space is specifically:
- the process of filling the accommodating space with low thermal conductivity gas is as follows:
- the low thermal conductivity gas is filled into the accommodation space through the gas filling hole.
- the preferred method of operation is: when at least ensuring that the air pressure in the accommodating space is greater than 1.1 standard atmospheric pressure, stop filling the accommodating space with low thermal conductivity gas during the cycle operation, and then seal the accommodating space setting space.
- Such an operation method can ensure that the air pressure in the accommodating space is greater than the external air pressure, and the gas can only diffuse from the inside of the accommodating space to the outside, which can prevent external air from entering the accommodating space during the process of sealing the accommodating space.
- the accommodating space affects the ratio of the low-temperature heat-conducting gas to the total gas in the accommodating space, thereby affecting the heat preservation effect of the refrigerator door.
- the door shell is a sheet metal door shell, its shape includes a sheet metal door and a door trim, the door trim is formed by bending the edge of the sheet metal door, the door trim and the sheet metal door It is processed in one piece.
- the above material for generating the door lining is usually at least one of PS and ABS. Of course, you can also choose to mix PS and ABS materials to make the door lining. PS and ABS materials have good electrical insulation and plasticity.
- the door liner is connected with the door shell to form the refrigerator door body with accommodating space.
- the process of connecting the door liner with the door shell to form the refrigerator door body with accommodating space specifically includes:
- Glue is applied to the connection between the door liner and the door shell, and the glue is any one of two-component polyurethane, epoxy silicon and organic silicon;
- the door liner is glued to the door shell to form the refrigerator door body with accommodating space.
- the way of glueing the door liner and the door shell ensures the firmness of the connection between the two, and on the other hand, it can also ensure the sealing of the joint part, so that it can be omitted when connecting the door liner to the door shell.
- a sealing member is provided to further achieve the effect of cost saving.
- the process of preparing the door body of the refrigerator also includes the following steps: forming a multi-layer barrier material on the surface of the door liner opposite to the door shell, which can effectively improve the sealing of the accommodating space of the door body, Preventing the accommodating space from leaking during the process of pumping or inflating.
- the specific process of generating a multi-layer barrier material on the surface of the door liner opposite to the door shell includes:
- a layer of aluminum film is grown on the surface of the door liner opposite to the door shell.
- the aluminum film has good barrier properties and can play a strong sealing role. At the same time, its manufacturing cost is relatively low, which is in line with the principle of economical efficiency;
- a multi-layer protective layer is grown on the aluminum film, and the material of each layer in the multi-layer protective layer is any one of nylon and PET plastics.
- This protective layer has strong toughness and is formed on the aluminum film. The main purpose is to protect the aluminum film from being scratched.
- Airgel felt is a flexible thermal insulation material that uses silica airgel as the main material and is compounded in reinforcing fibers, such as glass fiber and pre-oxidized fiber, through a special process. Airgel felt is soft and easy to cut , low density, inorganic fire prevention, overall hydrophobicity, green environmental protection and other characteristics, it can replace traditional flexible thermal insulation materials such as glass fiber products, asbestos thermal insulation blankets, silicate fiber products, which are not environmentally friendly and have poor thermal insulation performance.
- the specific filling steps of filling the airgel felt into the accommodating space include:
- the airgel felt is filled into the accommodating space, and the door body is placed on an ultrasonic vibrating screen to vibrate; this step is repeated until the accommodating space is filled with the airgel felt.
- the function of the ultrasonic vibrating screen is mainly to compact the airgel felt in the accommodating space, and the compacted airgel felt can play an important role when the door liner and the door shell are fixedly connected together.
- a good supporting effect can avoid the hollow phenomenon of the door body, so that the prepared door body can be stronger and more solid.
- the refrigerator door body includes a door liner 1, a door shell 2, and an airgel felt 3, wherein the door liner 1 Fixedly connected to the door shell 2 to form an airtight accommodation space, the airgel blanket 3 is filled in the accommodation space, and the accommodation space is also filled with a gas with low thermal conductivity, the airtight
- the ratio X of the low thermal conductivity gas to the total gas in the accommodation space is greater than a threshold.
- the threshold value of the proportion X of the heat-conducting gas to the total gas is set to 90%, that is, the proportion X of the low heat-conducting gas to the total gas in the accommodating space is greater than 90%, so that
- the main purpose of the setting is to make full use of the physical properties of low heat conduction gas that is not easy to conduct heat, so that the refrigerator door can achieve a good heat preservation effect.
- the surface of the door liner 1 opposite to the door shell 2 is covered with multiple layers of barrier materials, thereby helping the door liner 1 to play a sealing role and preventing the door liner 1 from leaking.
- the multi-layer barrier material includes an aluminum barrier layer 21 attached close to the door liner 1 and a multi-layer protective layer 22 covering the aluminum barrier layer 21, the aluminum layer 21 has better sealing performance, and the cost of manufacture is relatively low.
- the aluminum layer 21 is easily scratched by sharp objects. Therefore, the aluminum barrier layer 21 needs to be provided with a multi-layer protective layer 22.
- the material of each layer in the multi-layer protective layer 22 is nylon and Any one of the PET plastics, nylon and PET plastics have better toughness, so as to protect the aluminum barrier layer 21 .
- the method for preparing a refrigerator door as described above and the refrigerator door provided by the present invention have the following beneficial effects:
- the refrigerator door body prepared by the preparation method of the present invention has good thermal insulation performance
- the low thermal conductivity gas filled in the door body makes the whole door body have good thermal insulation performance
- the door lining and the door shell are handed over by any glue of two-component polyurethane, epoxy silicon and silicone, so that the door lining and the door shell are tightly connected and a good sealing effect is achieved at the same time;
- Airgel felt has the characteristics of softness, easy cutting, low density, inorganic fire prevention, overall hydrophobicity, and environmental protection. It can replace traditional flexible materials such as glass fiber products, asbestos insulation felts, and silicate fiber products that are not environmentally friendly and have poor thermal insulation properties. Insulation Materials.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Refrigerator Housings (AREA)
Abstract
本发明提供了一种冰箱门体的制备方法，包括：制作带有容置空间的冰箱门体；将气凝胶毡填充进所述容置空间内；执行循环过程直至满足预设条件；所述循环过程包括：抽取所述容置空间内的气体；向所述容置空间中填充低导热气体。
Description
本发明涉及冰箱制造技术领域，特别是涉及冰箱门体及其制备方法。
冰箱门体一般由外壳、门衬等部件通过聚氨酯发泡固定在一起，聚氨酯在其中既起到固定粘接的作用，同时还起到保温作用。聚氨酯发泡材料大体由异氰酸酯、多元醇和发泡剂经过发泡得到。
但是聚氨酯泡沫由于其泡沫孔尺寸限制以及发泡剂导热系数限制，导热系数较高，因此使用其制备的门体保温性能往往不太好；并且，其制备比较复杂，需要专门的发泡模具和发泡设备，设备投资费用大，生产成本较高，工艺比较复杂。
综合而言，现有的聚氨酯发泡制备冰箱门体，存在制造成本高、门体保温性能差的问题。
发明内容
为解决现有技术中的问题，本发明提供了一种新的冰箱门体制备方法，这种制备方法通过制备一个带有容置空间的冰箱门体，然后向该容置空间中填充气凝胶毡，当该容置空间中填满了气凝胶毡后，再向该容置空间中填充低导热气体，当该容置空间内的所述低导热气体相对该容置空间内总气体的占比大于设定的阈值，并且该容置空间内的气压值大于或等于一个标准大气压值，密封该容置空间，从而形成冰箱门体。通过这种方法制备的冰箱门体解决了制造成本高，门体保温性能差的问题。
为实现上述发明之目的，本发明一实施方式提供了一种冰箱门体制备方法，其中，包括：
制作带有容置空间的冰箱门体；
将气凝胶毡填充进所述容置空间内；
执行循环过程直至满足预设条件；所述循环过程包括：
抽取所述容置空间内的气体；向所述容置空间中填充低导热气体；
其中，所述预设条件为：所述容置空间中所述低导热气体相对总气体的占比X大于设定的阈值且所述容置空间中的气压P大于或等于1个标准大气压强值；
停止填充所述低导热气体并将所述容置空间密封。
作为本发明一实施方式的进一步改进，其中，抽取所述容置空间内的气体的过程具体为：关闭所述容置空间的充气孔，打开所述容置空间的抽气孔，通过所述抽气孔抽取所述容置空间内的气体；
向所述容置空间中填充低导热气体的过程具体为：开启所述容置空间的充气孔，通过所述充气孔向所述容置空间内填充所述低导热气体。
作为本发明一实施方式的进一步改进，其中，所述预设条件中所述气压P大于1.1个标准大气压值。
作为本发明一实施方式的进一步改进，其中，所述制作带有容置空间的冰箱门体的过程包括：
生成门衬与门壳；
将所述门衬与所述门壳连接形成带有容置空间的所述冰箱门体。
作为本发明一实施方式的进一步改进，其中，将所述门衬与所述门壳连接形成带有容置空间的所述冰箱门体的过程具体包括：
在所述门衬上与所述门壳连接的连接部涂胶水，所述胶水为双组份聚氨酯、环氧硅和有机硅中的任意一种；
将所述门衬胶接到所述门壳上形成带有容置空间的所述冰箱门体。
作为本发明一实施方式的进一步改进，其中，还包括：在所述门衬与所述门壳相对的面上生成多层阻隔材料。
作为本发明一实施方式的进一步改进，其中，在所述门衬与所述门壳相对 的面上生成多层阻隔材料的具体过程包括：
在所述门衬与所述门壳相对的面上生长一层铝膜；
在所述铝膜上生长多层保护层，所述多层保护层中每层的材质为尼龙和PET塑料当中的任意一种。
作为本发明一实施方式的进一步改进，其中，所述将气凝胶毡填充进所述容置空间内具体包括：
将气凝胶毡填充到所述容置空间内，将所述门体放在超声波振动筛上进行震动；重复该步骤直至所述容置空间内充满所述气凝胶毡。
本发明另一实施方式还提供了一种冰箱门体，包括门壳、门衬和气凝胶毡，其特征在于，所述门衬固定连接在所述门壳上形成密闭的容置空间，所述气凝胶毡填充在所述容置空间中，所述容置空间内还填充有低导热系数的气体，所述容置空间内所述低导热气体相对总气体的占比X大于阈值。
作为本发明另一实施方式的进一步改进，其中，所述门衬与所述门壳相对的面上覆盖有多层阻隔材料，所述多层阻隔材料包括靠近所述门衬贴敷的铝质阻隔层和覆盖在所述铝质阻隔层上的多层保护层，所述多层保护层中各层的材质为尼龙和PET塑料中的任意一种。
与现有技术相比，本发明具有以下有益效果：
通过本发明的制备方法制备冰箱门体，整个制造过程制造成本低；
通过本发明的制备方法制备得到的冰箱门体保温性能好。
图1是本发明一实施方式中冰箱门制备方法的流程图；
图2是本发明另一实施方式中冰箱门的结构示意图；
图3是本发明另一实施方式中冰箱门的前视图；
图4是本发明另一实施方式中冰箱门的门衬结构示意图；
图5是图4中P处的放大图。
下面结合附图对本发明的较佳实施例进行详细阐述，以使本发明的优点和特征能更易于被本领域技术人员理解，从而对本发明的保护范围做出更为清楚明确的界定。
本发明中的术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
结合图1所示，本实施例中，本发明主要涉及一种冰箱门体制备方法，其中包括：
制作带有容置空间的冰箱门体；
将气凝胶毡填充进所述容置空间内；
执行循环过程直至满足预设条件；所述循环过程包括：
抽取所述容置空间内的气体；向所述容置空间中填充低导热气体；
其中，所述预设条件为：所述容置空间中所述低导热气体相对总气体的占比X大于设定的阈值且所述容置空间中的气压P大于或等于1个标准大气压强值；
停止填充所述低导热气体并将所述容置空间密封。
根据发明人的研发经验：将所述低导热气体相对总气体的占比X的阈值设置为90％，即当所述容置空间内低导热气体相对总气体的占比大于90％且所述容置空间中的气压P大于或等于1个标准大气压值，所制备的门体就能达到很好的保温效果，因此，在满足这样的条件时就将所述容置空间进行密封处理。相反地，当所述容置空间内低导热气体相对总气体的占比小于或等于90％，或者所述容置空间中的气压P小于1个标准大气压值则需要继续重 复循环过程中的全部或部分动作。
在上述的循环过程中，抽取所述容置空间内的气体的过程具体为：
关闭所述容置空间的充气孔，
打开所述容置空间的抽气孔，
通过所述抽气孔抽取所述容置空间内的气体；
而向所述容置空间中填充低导热气体的过程具体为：
开启所述容置空间的充气孔，
通过所述充气孔向所述容置空间内填充所述低导热气体。
为了进一步确保密封后的所述容置空间内所述低导热气体相对容置空间中总气体的占比大于90％且所述容置空间中的气压大于或等于1个标准大气压值。根据发明人的经验，优选地操作方法是：在至少确保容置空间内的气压大于1.1个标准大气压时，停止执行循环操作中向所述容置空间中填充低导热气体，再密封所述容置空间。这样的操作方法可以保证所述容置空间内的气压大于外部气压，气体只能够从所述容置空间内部往外部扩散，可以避免在密封所述容置空间的过程中外部的空气进入到所述容置空间，影响所述低温导热气体相对于容置空间内总气体的占比，从而影响冰箱门体的保温效果。
进一步地，制作带有容置空间的冰箱门体的具体过程包括如下：
生成门衬与门壳；所述门壳为钣金门壳，其形状包括钣金门面和门饰条，门饰条是由钣金门面的边沿经过弯折而形成，门饰条和钣金门面是一体成形加工而成的。
以上生成门衬的材质通常为PS和ABS中的至少一种，当然也可以选择将PS和ABS材质进行混合调配，再用来制作门衬。PS和ABS的材料具备良好的电绝缘性和可塑性。
制成门衬和门壳后，将所述门衬与所述门壳连接形成带有容置空间的所述冰箱门体。
具体而言，将所述门衬与所述门壳连接形成带有容置空间的所述冰箱门 体的过程，具体包括：
在所述门衬上与所述门壳连接的连接部涂胶水，所述胶水为双组份聚氨酯、环氧硅和有机硅中的任意一种；
然后，将所述门衬胶接到所述门壳上形成带有容置空间的所述冰箱门体。门衬与门壳胶接的方式一方面保证了两者连接的牢固性，另一方面也可以保证连接部位的密封性，从而可以省略在将门衬连接到门壳上时，在两者之间设置密封件，进一步达到节俭成本的作用。
当然，向冰柜门体的容置空间内填充气凝胶毡的过程应当在所述门衬与所述门壳胶接之前完成。
进一步地，在制备冰箱门体的过程中还包括如下步骤：在所述门衬与所述门壳相对的面上生成多层阻隔材料，这样可以有效地提高门体容置空间的密封性，防止在抽气或充气的过程中，所述容置空间漏气。
具体而言，在所述门衬与所述门壳相对的面上生成多层阻隔材料的具体过程包括：
在所述门衬与所述门壳相对的面上生长一层铝膜，铝膜的阻隔性好，可以起到很强的密封性，同时其制造成本也比较低，符合经济高效的原则；
在所述铝膜上生长多层保护层，所述多层保护层中每层的材质为尼龙和PET塑料当中的任意一种，这种保护层具备很强的韧性，将其生成在铝膜上主要是为了保护铝膜，避免其被划破。
在所述门衬与门壳胶接之前，将所述将气凝胶毡填充进所述容置空间内。气凝胶毡是把二氧化硅气凝胶作为主体材料，并复合于增强性纤维中，如玻璃纤维、预氧化纤维，通过特殊工艺合成的柔性保温材料，气凝胶毡具有柔软、易裁剪、密度小、无机防火、整体疏水、绿色环保等特性，其可替代玻璃纤维制品、石棉保温毡、硅酸盐纤维制品等不环保、保温性能差的传统柔性保温材料。
将气凝胶毡填充到所述容置空间的具体填充步骤包括：
将气凝胶毡填充到所述容置空间内，将所述门体放在超声波振动筛上进 行震动；重复该步骤直至所述容置空间内充满所述气凝胶毡。
这个过程中，超声波震动筛的作用主要是为了使气凝胶毡在所述容置空间内被压实，压实的气凝胶毡能够在门衬和门壳固定连接到一起时起到很好的支撑作用，避免门体产生中空现象，这样制备出的门体才能够更牢固、扎实。
本发明另一实施方式还提供了一种冰箱门体，如图2-5所示，所述冰箱门体包括门衬1、门壳2、和气凝胶毡3，其中，所述门衬1固定连接在所述门壳2上形成密闭的容置空间，所述气凝胶毡3填充在所述容置空间中，所述容置空间内还填充有低导热系数的气体，所述密闭容置空间中低导热气体相对总气体的占比X大于阈值。
根据上述冰箱的制备过程，所述导热气体相对总气体的占比X的阈值设置为90％，也即所述容置空间内所述低导热气体相对总气体的占比X大于90％，这样的设置主要是为了充分利低导热气体不容易导热的物理属性，从而使冰箱门体能够达到很好的保温效果。
作为一种优选方式，所述门衬1与所述门壳2相对的面上覆盖有多层阻隔材料，从而有助于门衬1起到密封的作用，防止门衬1漏气。所述多层阻隔材料包括靠近所述门衬1贴敷的铝质阻隔层21和覆盖在所述铝质阻隔层21上的多层保护层22，所述铝质层21具备较好的密封性能，并且制造的成本比较低。但是，铝质层21很容易被尖锐的物体划破，因此，在所述铝质阻隔层21上需要设置有多层保护层22，所述多层保护层22中各层的材质为尼龙和PET塑料中的任意一种，尼龙和PET塑料均具备较好的韧性，从而可以起到保护铝质阻隔层21的作用。
综合而言，如上所描述的冰箱门体的制备方法以及本发明所提供的冰箱门体，具有如下有益效果：
通过本发明的制备方法制备冰箱门体，整个制造过程制造成本低；
通过本发明的制备方法制备得到的冰箱门体保温性能好；
门体内填充的低导热性气体使整个门体具备良好的保温性能；
门衬与门壳通过双组份聚氨酯、环氧硅和有机硅中的任意一种胶水交接，从而使门衬和门壳连接紧密，同时达到很好的密封效果；
将气凝胶毡填充到所述容置空间内，将所述门体放在超声波振动筛上进行震动，能够使气凝胶毡很好地被压实，从而在门衬和门壳连接时起到很好地支撑作用；
气凝胶毡具有柔软、易裁剪、密度小、无机防火﹑整体疏水、绿色环保等特性，其可替代玻璃纤维制品、石棉保温毡、硅酸盐纤维制品等不环保、保温性能差的传统柔性保温材料。
最后说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管通过上述优选实施例已经对本发明进行了详细的描述，但本领域技术人员应当理解，可以在形式上和细节上对其做出各种各样的改变，而不偏离本发明权利要求书所限定的范围。
Claims (10)
- 一种冰箱门体制备方法，其特征在于，包括：制作带有容置空间的冰箱门体；将气凝胶毡填充进所述容置空间内；执行循环过程直至满足预设条件；所述循环过程包括：抽取所述容置空间内的气体；向所述容置空间中填充低导热气体；其中，所述预设条件为：所述容置空间中所述低导热气体相对总气体的占比X大于设定的阈值且所述容置空间中的气压P大于或等于1个标准大气压强值；停止填充所述低导热气体并将所述容置空间密封。
- 根据权利要求1所述的冰箱门体制备方法，其特征在于，抽取所述容置空间内的气体的过程具体为：关闭所述容置空间的充气孔，打开所述容置空间的抽气孔，通过所述抽气孔抽取所述容置空间内的气体；向所述容置空间中填充低导热气体的过程具体为：开启所述容置空间的充气孔，通过所述充气孔向所述容置空间内填充所述低导热气体。
- 根据权利要求1所述的冰箱门体制备方法，其特征在于，所述预设条件中所述气压P大于1.1个标准大气压值。
- 根据权利要求1所述的冰箱门体制备方法，其特征在于，所述制作带有容置空间的冰箱门体的过程包括：生成门衬与门壳；将所述门衬与所述门壳连接形成带有容置空间的所述冰箱门体。
- 根据权利要求4所述的冰箱门体制备方法，其特征在于，将所述门衬与所述门壳连接形成带有容置空间的所述冰箱门体的过程具体包括：在所述门衬上与所述门壳连接的连接部涂胶水，所述胶水为双组份聚氨酯、环氧硅和有机硅中的任意一种；将所述门衬胶接到所述门壳上形成带有容置空间的所述冰箱门体。
- 根据权利要求4所述的冰箱门体制备方法，其特征在于，还包括：在所述门衬与所述门壳相对的面上生成多层阻隔材料。
- 根据权利要求6所述的冰箱门体制备方法，其特征在于，在所述门衬与所述门壳相对的面上生成多层阻隔材料的具体过程包括：在所述门衬与所述门壳相对的面上生长一层铝膜；在所述铝膜上生长多层保护层，所述多层保护层中每层的材质为尼龙和PET塑料当中的任意一种。
- 根据权利要求1所述的冰箱门体制备方法，其特征在于，所述将气凝胶毡填充进所述容置空间内具体包括：将气凝胶毡填充到所述容置空间内，将所述门体放在超声波振动筛上进行震动；重复该步骤直至所述容置空间内充满所述气凝胶毡。
- 一种冰箱门体，包括门壳、门衬和气凝胶毡，其特征在于，所述门衬固定连接在所述门壳上形成密闭的容置空间，所述气凝胶毡填充在所述容置空间中，所述容置空间内还填充有低导热系数的气体，所述容置空间内所述低导热气体相对总气体的占比X大于阈值。
- 根据权要求9所述的冰箱门体，其特征在于，所述门衬与所述门壳相对的面上覆盖有多层阻隔材料，所述多层阻隔材料包括靠近所述门衬贴敷的铝质阻隔层和覆盖在所述铝质阻隔层上的多层保护层，所述多层保护层中各层的材质为尼龙和PET塑料中的任意一种。
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| CN110513942A (zh) * | 2019-09-26 | 2019-11-29 | 泰州市朗拓塑料有限公司 | 一种冰箱门板的板面结构 |
| US20200400266A1 (en) * | 2017-12-20 | 2020-12-24 | Acergy France SAS | Insulation of Pipe-in-Pipe Systems |
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| JPH10339564A (ja) * | 1997-06-06 | 1998-12-22 | Matsushita Refrig Co Ltd | 断熱扉 |
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