CN111907154B - 真空绝热板、真空绝热板的制造方法及冰箱 - Google Patents

真空绝热板、真空绝热板的制造方法及冰箱 Download PDF

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CN111907154B
CN111907154B CN201910382633.6A CN201910382633A CN111907154B CN 111907154 B CN111907154 B CN 111907154B CN 201910382633 A CN201910382633 A CN 201910382633A CN 111907154 B CN111907154 B CN 111907154B
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refrigerator
glass fiber
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刘站站
李鹏
朱小兵
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Qingdao Haier Refrigerator Co Ltd
Haier Smart Home Co Ltd
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Abstract

本发明提供了一种真空绝热板、真空绝热板的制造方法及冰箱。所述真空绝热板包括玻纤芯材、包覆所述玻纤芯材的包覆膜，所述玻纤芯材至少包括第一厚度区、第二厚度区、连接所述第一厚度区和第二厚度区的过渡区，所述第一厚度区的厚度大于所述第二厚度区，所述真空绝热板还包括覆盖于所述过渡区上的防护层，通过厚度不一的厚度区实现了冰箱不同区域的保温，提高了冰箱的容积率，节约了能耗；通过覆盖于所述过渡区上的防护层，阻隔所述过渡区的玻璃纤维刺穿所述包覆膜，保护了所述包覆膜，避免了热传递产生的漏热问题。

Description

真空绝热板、真空绝热板的制造方法及冰箱
技术领域
本发明涉及绝热材料领域，尤其涉及一种真空绝热板、真空绝热板的制造方法及冰箱。
背景技术
目前冰箱减薄、做大容积率是冰箱发展趋势之一，但是势必带来能耗升高的问题，因此超薄大容积的冰箱往往采用真空绝热板来实现其节能。
由于冰箱的不同区域温度不同从而内外温差不一致，如果都采用同一厚度的真空绝热板，虽然这样能够保证隔热效果，但是在温差较小的区域配置较厚的真空绝热板，则会导致材料浪费以及容积率降低的问题；同样在温差较大的区域则需要更厚的真空绝热板，因此冰箱需要配置在不同区域厚度不一的真空绝热板。
然而，在厚度变化处，由于玻璃纤维取向近似垂直于覆膜材料，可能会将此处的覆膜材料刺穿，导致发生热传递，产生漏热点。
因此，有必要提出一种实现冰箱不同区域保温且不漏热的真空绝热板。
发明内容
为了解决上述技术问题，本发明提出了一种真空绝热板、真空绝热板的制造方法及冰箱。
为了实现上述目的，本发明提供的技术方案如下：一种真空绝热板，包括玻纤芯材、包覆所述玻纤芯材的包覆膜，所述玻纤芯材至少包括第一厚度区、第二厚度区、连接所述第一厚度区和第二厚度区的过渡区，所述第一厚度区的厚度大于所述第二厚度区，所述真空绝热板还包括覆盖于所述过渡区上的防护层。
作为本发明的进一步改进，所述过渡区呈弧状且其圆心角介于45°～75°之间。
作为本发明的进一步改进，所述防护层的材质为玻璃棉或气凝胶毡中的至少一种。
作为本发明的进一步改进，所述真空绝热板还包括将所述防护层与所述过渡区相联结的缝纫线，所述缝纫线的材质为聚乙烯、腈纶、聚丙烯、涤纶、聚酯、尼龙中的至少一种。
作为本发明的进一步改进，所述包覆膜的材质为尼龙、涤纶、聚乙烯、铝箔、镀铝膜中的至少一种。
本发明还提出一种真空绝热板的制造方法，包括：
S1，对玻纤芯材进行切割，至少形成第一厚度区和比第一厚度区薄的第二厚度区、连接所述第一厚度区和第二厚度区的过渡区；
S2，在过渡区设置防护层；
S3，压合设置有防护层的玻纤芯材；
S4，将压合的玻纤芯材内置于包覆膜内，抽真空完成密封。
作为本发明的进一步改进，所述S1步骤中，对玻纤芯材沿弧状进行切割形成圆心角介于45°～75°之间的所述过渡区。
作为本发明的进一步改进，所述S2步骤具体为：在过渡区设置玻璃棉或气凝胶毡中的至少一种形成所述防护层。
作为本发明的进一步改进，所述S2步骤具体为：通过缝纫线按照经纬向将所述防护层与所述过渡区进行缝制完成联结。
本发明还提出一种冰箱，包括外壳、内胆、夹设于所述外壳与内胆之间的真空绝热板，所述真空绝热板为上述所述的真空绝热板或为由上述所述的真空绝热板的制造方法制得的真空绝热板，所述冰箱包括冷冻间室和冷藏间室，所述第一厚度区配设于所述冷冻间室的外侧，所述第二厚度区配设于所述冷藏间室的外侧。
作为本发明的进一步改进，所述真空绝热板与所述内胆之间填充有泡沫隔热层，填充于所述冷藏间室外侧的所述泡沫隔热层与所述第二厚度区的厚度比介于1/1～3/1之间。
本发明的有益效果是：本发明中提出了一种真空绝热板、其制造方法以及冰箱，通过厚度不一的厚度区实现了冰箱不同区域的保温，提高了冰箱的容积率，节约了能耗；
通过覆盖于所述过渡区上的防护层，阻隔所述过渡区的玻璃纤维刺穿所述包覆膜，避免了热传递产生的漏热问题。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1为本发明中玻纤芯材与防护层配合的示意图；
图2为具有图1中玻纤芯材与防护层的真空绝热板的示意图；
图3为具有图2中真空绝热板的冰箱的示意图；
其中，100——冰箱，1——真空绝热板，11——玻纤芯材，111——第一厚度区，112——第二厚度区，113——过渡区，12——包覆膜，13——防护层，14——吸附剂，2——外壳，3——内胆，4——冷冻间室，5——冷藏间室，6——泡沫隔热层。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请具体实施例及相应的附图对本申请技术方案进行清楚、完整地描述。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
如图1至图3中所示，本发明提出了一种真空绝热板1，包括玻纤芯材11、包覆所述玻纤芯材11的包覆膜12，所述玻纤芯材11至少包括第一厚度区111、第二厚度区112、连接所述第一厚度区111和第二厚度区112的过渡区113，所述第一厚度区111的厚度大于所述第二厚度区112，当然，在具体实施方式中，所述玻纤芯材11不仅可包括两种厚度，还可包括具有不同厚度的其他厚度区，并不以此为限。
在本发明具体实施方式中，所述过渡区113呈弧状且其圆心角介于45°～75°之间，美观的同时使得所述过渡区113的弯曲弧线较为平缓，从而所述过渡区113的玻璃纤维不易刺穿所述包覆膜12，对所述包覆膜12起到较好的保护。
优选的，所述包覆膜12的材质可为尼龙、涤纶、聚乙烯、铝箔、镀铝膜中的任意一种以使得所述包覆膜12不易被玻璃纤维刺穿，当然，若采用其他韧性度高的材料，同样能够达到本发明的目的。
所述真空绝热板1还包括覆盖于所述过渡区113上的防护层13以阻隔所述过渡区113的玻璃纤维刺穿所述包覆膜12，避免了热传递，使得所述真空绝热板1不漏热。
具体的，所述防护层13的材质为玻璃棉或气凝胶毡中的至少一种，能够在高真空度下保持较高的韧性以在所述过渡区113的玻璃纤维与所述包覆膜12之间形成阻隔，对所述包覆膜12起到很好的保护作用。
所述真空绝热板1还包括将所述防护层13与所述过渡区113相联结的缝纫线，所述缝纫线呈经纬交错编织状。
优选地，所述缝纫线的材质可为聚乙烯、腈纶、聚丙烯、涤纶、聚酯、尼龙中的任意一种以在高真空度下维持较高的韧性，从而更好的联结所述防护层13与所述过渡区113。
另外，在本发明具体实施方式中，如图2所示，所述真空绝热板1还包括设于所述玻纤芯材11中以吸附所述玻纤芯材11的水分及气体成分的吸附剂14，这样，在高真空度条件下，产生自所述玻纤芯材11的水分和气体成分也不会使其真空度下降而影响绝热性能。
本发明还提出了一种真空绝热板1的制造方法，包括：
S1，对玻纤芯材11进行切割，至少形成第一厚度区111和比第一厚度区111薄的第二厚度区112、连接所述第一厚度区111和第二厚度区112的过渡区113；
S2，在过渡区113设置防护层13；
S3，压合设置有防护层13的玻纤芯材11；
S4，将压合的玻纤芯材11内置于包覆膜12内，抽真空完成密封。
具体的，所述S2步骤中，对玻纤芯材11沿弧状进行切割形成圆心角介于45°～75°之间的所述过渡区113，美观的同时使得所述过渡区113的弯曲弧线较为平缓，从而所述过渡区113的玻璃纤维不易刺穿所述包覆膜12，对所述包覆膜12起到较好的保护。
所述S2步骤具体为在过渡区113设置玻璃棉或气凝胶毡中的至少一种形成所述防护层13。
进一步的，所述S2步骤具体为通过缝纫线按照经纬向将所述防护层13与所述过渡区113进行缝制完成联结，即在经向缝制后，再纬向缝制，加强了所述防护层13与过渡区113的联结强度。
在制造过程中，可采用人工或者缝纫机器对所述防护层13和过渡区113进行缝制，从制造效率来看，多采用缝纫机器进行缝制且其缝纫针直径为1mm～2mm，缝纫距离为5mm～10mm，缝制时所述缝纫线基本不受力，对所述玻纤芯材11基本无破坏，从而使得所述防护层13与所述过渡区113之间呈蓬松状态，以便容易进行后续的抽真空操作。
具体的，所述S3步骤具体为通过加压压制、热压和低真空压制中的至少一种对所述玻纤芯材11进行压合，缩小了所述玻纤芯材11的体积以便于内置于所述包覆膜12内。
另外，所述真空绝热板1的制造方法还包括：在抽真空前将用以吸附所述玻纤芯材11的水分及气体成分的吸附剂14植入所述玻纤芯材11中后再完成密封，或者将所述吸附剂14与所述玻纤芯材11一起内置于所述包覆膜12内完成密封，使得高真空度下的玻纤芯材11保持干燥状态从而维持好的绝热性能。
本发明还提出了一种冰箱100，包括外壳2、内胆3、夹设于所述外壳2与内胆3之间的真空绝热板1，所述真空绝热板1为上述所述的真空绝热板1或上述所述的真空绝热板1的制造方法制得的真空绝热板1，所述冰箱100包括冷冻间室4和冷藏间室5，所述第一厚度区111配设于所述冷冻间室4的外侧，所述第二厚度区112配设于所述冷藏间室5的外侧，通过厚度不一的所述真空绝热板1实现了冰箱100不同区域的保温，提高了冰箱100的容积率，节约了能耗。
具体的，所述真空绝热板1与所述内胆3之间填充有泡沫隔热层6，填充于所述冷藏间室5外侧的所述泡沫隔热层6与所述第二厚度区112的厚度比介于1/1～3/1之间，以便于所述泡沫隔热层6的流动填充。
综上所述，本发明中的真空绝热板1，通过厚度不一的第一厚度区111以及第二厚度区112实现了冰箱100不同区域的保温，提高了冰箱100的容积率，节约了能耗；通过覆盖于所述过渡区113上的防护层13，阻隔所述过渡区113的玻璃纤维刺穿所述包覆膜12，保护了所述包覆膜12，避免了热传递产生的漏热问题。
以上所述的仅是本发明的优选实施方式，应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。

Claims (6)

1.一种冰箱，包括外壳、内胆、夹设于所述外壳与内胆之间的真空绝热板，其特征在于，所述真空绝热板包括玻纤芯材、包覆所述玻纤芯材的包覆膜，所述玻纤芯材至少包括第一厚度区、第二厚度区、连接所述第一厚度区和第二厚度区的过渡区，所述第一厚度区的厚度大于所述第二厚度区，所述真空绝热板还包括覆盖于所述过渡区上的防护层；所述冰箱包括冷冻间室和冷藏间室，所述第一厚度区配设于所述冷冻间室的外侧，所述第二厚度区配设于所述冷藏间室的外侧，所述真空绝热板与所述内胆之间填充有泡沫隔热层，所述过渡区朝所述第一厚度区凸伸，所述过渡区呈弧状且其圆心角介于45°~75°之间。
2.根据权利要求1所述的冰箱，其特征在于，填充于所述冷藏间室外侧的所述泡沫隔热层与所述第二厚度区的厚度比介于1/1~3/1之间。
3.根据权利要求1所述的冰箱，其特征在于，所述防护层的材质为玻璃棉或气凝胶毡中的至少一种。
4.根据权利要求1所述的冰箱，其特征在于，所述包覆膜的材质为尼龙、涤纶、聚乙烯、铝箔、镀铝膜中的至少一种。
5.根据权利要求1所述的冰箱，其特征在于，所述真空绝热板还包括将所述防护层与所述过渡区相联结的缝纫线，所述缝纫线的材质为聚乙烯、腈纶、聚丙烯、涤纶、聚酯、尼龙中的至少一种。
6.根据权利要求5所述的冰箱，其特征在于，所述缝纫线按照经纬向进行缝制完成联结，采用缝纫机器进行缝制，且其缝纫针直径为1mm~2mm，缝纫距离为5mm~10mm。
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Publication number Priority date Publication date Assignee Title
JP2009121694A (ja) * 2007-11-12 2009-06-04 Sharp Corp 冷蔵庫
CN201651674U (zh) * 2009-10-27 2010-11-24 滁州银兴电气有限公司 一种具不同厚度分区的真空绝热板
CN206841348U (zh) * 2017-07-01 2018-01-05 重庆长安汽车股份有限公司 一种可变厚度的自排气热熔型沥青阻尼垫

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009121694A (ja) * 2007-11-12 2009-06-04 Sharp Corp 冷蔵庫
CN201651674U (zh) * 2009-10-27 2010-11-24 滁州银兴电气有限公司 一种具不同厚度分区的真空绝热板
CN206841348U (zh) * 2017-07-01 2018-01-05 重庆长安汽车股份有限公司 一种可变厚度的自排气热熔型沥青阻尼垫

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