WO2010081307A1 - 平面状发热体 - Google Patents

平面状发热体 Download PDF

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Publication number
WO2010081307A1
WO2010081307A1 PCT/CN2009/070891 CN2009070891W WO2010081307A1 WO 2010081307 A1 WO2010081307 A1 WO 2010081307A1 CN 2009070891 W CN2009070891 W CN 2009070891W WO 2010081307 A1 WO2010081307 A1 WO 2010081307A1
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Prior art keywords
heat generating
layer
insulating layer
conductive heat
heating element
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PCT/CN2009/070891
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English (en)
French (fr)
Inventor
程海梅
Original Assignee
Cheng Haimei
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Publication date
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Publication of WO2010081307A1 publication Critical patent/WO2010081307A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material

Definitions

  • the present invention relates to a planar heating element, and more particularly to a planar heating element having low electromagnetic radiation. Background technique
  • the planar heating element is a planar body that can generate heat after being energized. It has the characteristics of large heat generation and heat dissipation area, uniform heat transfer, high heat efficiency and convenient use, and is widely used in saunas, gyms, and dry heat.
  • the foot bath barrel, floor heating, daily household appliances and other products are heated by the heat generated by the planar heating element during use. Since the current inside the existing product is generally unidirectional, it is relatively easy to generate an electromagnetic field, which is not comprehensively prevented by the curved structure; and the process and structure are generally single-sided ink printing, carbon fiber arrangement or other conductive
  • the heating materials are arranged according to requirements.
  • the Chinese utility model patent discloses a planar heating body, the planar heating body structure includes carbon fibers, the carbon fibers are aligned in parallel, and the carbon fibers are provided with an insulating insulation.
  • the film layer is provided with parallel electrodes at both ends of the carbon fiber; the carbon fibers are disposed in parallel at a fixed distance.
  • the planar heating element has the advantages of large heat generating area and strong windability.
  • planar heating element of this structure also has certain disadvantages, because in the planar heating element of this structure, there is only one pair of electrodes, so the current directions on the carbon fibers are all in the same direction, and the magnetic field generated in the same direction according to the electromagnetic law The direction is the same, so the planar heating element using this mechanism tends to generate a large electromagnetic field when it is heated, and electromagnetic radiation is generated. People who are in such an environment for a long time often have an impact on people's bodies, especially for pregnant women and Children can easily cause harm to the body. Summary of the invention
  • the object of the present invention is to invent a new production process and product structure, which greatly reduces the temperature difference of the surface while reducing the electromagnetic field strength of the surface of the heating plate, and provides a planar shape with low electromagnetic radiation. heating stuff.
  • Embodiments of the present invention are implemented by the following technical solutions:
  • the heat generating body includes a first insulating layer on the upper surface and a third insulating layer on the lower surface, and a first conductive heat generating layer and a second conductive heat generating layer are disposed between the first insulating layer and the third insulating layer, and the first conductive heat is generated
  • the layer has the same shape as the second conductive heat generating layer,
  • a second insulating layer is disposed between adjacent conductive heat generating layers, and adjacent conductive heat generating layers are electrically connected to each other.
  • An electrode is disposed on the conductive heat generating layer, and electrodes of the adjacent two conductive heat generating layers are electrically connected by a conductor.
  • the shape of the conductive heating layer is the same, and the current direction is opposite.
  • the shape of the conductive heat generating layer can be designed in any shape.
  • the insulating layer may also be a flexible insulating layer.
  • the conductive heating element can also be a far infrared material with low electromagnetic radiation.
  • a wire is used to connect the controller to the electrode.
  • the number of layers and thickness of the insulation layer can be adjusted to comply with basic insulation, reinforced insulation, etc., to suit different occasions.
  • the electrodes of one end of the first conductive heat generating layer and the second conductive heat generating layer in the same direction are connected to the power source, and the electrodes of the other end of the first conductive heat generating layer and the second conductive heat generating layer in the same direction pass the conductor. Connection, so when the two heat-generating layers are energized, the two conductive heat-generating layers form a loop, and the current flows from one end of the power source to the other end, and flows back to the power source through the other end of the other heat-generating body. Therefore, the current directions on the first conductive heating element and the second conductive heating body are opposite.
  • the direction of the magnetic field generated by the first conductive heating element and the second conductive heating element is also opposite, and the shape of the first conductive heating layer and the second conductive heating layer are the same, so the first conductive heating element and the second conductive
  • the magnetic fields generated by the heating elements can cancel each other out.
  • the surface of the planar heating element has almost no electromagnetic radiation, so the present invention does not cause harm to the human body, and is a healthy and environmentally friendly planar heating element with low electromagnetic radiation.
  • FIG. 1 is a schematic structural view of a planar heating element according to an embodiment of the present invention. detailed description:
  • the planar heating element includes as shown in the figure: the heating element includes a first insulating layer 1 on the upper surface and a third insulating layer 6 on the bottom surface.
  • One a first conductive heat generating layer 2 and a second conductive heat generating layer 4 are disposed between the insulating layer 1 and the third insulating layer 6, and a second insulating layer 3 is disposed between the first conductive heat generating layer 2 and the second conductive heat generating layer 4, first The conductive heat generating layer 2 and the second conductive heat generating layer 4 are electrically connected.
  • An electrode 8 is disposed on each of the first conductive heat-generating layer 2 and the second conductive heat-generating layer 4, and the first conductive heat-generating layer 2 and the electrode 8 on the second conductive heat-generating layer 4 are electrically connected by a conductor 5.
  • the first conductive heat-generating layer 2 has the same shape as the second conductive heat-generating layer 4, and the current direction is opposite when operating. According to the electromagnetic law, the directions of the magnetic fields generated by the first conductive heat-generating body 2 and the second conductive heat-generating body 4 are also opposite. Therefore, the generated magnetic fields can cancel each other such that the surface of the planar heating element has almost no electromagnetic radiation; and the shape of the conductive heat generating layer can be various shapes such as a polygonal shape or a conical shape according to actual needs.
  • the insulating layer may each be a flexible insulating layer to produce a flexible heating element.
  • the conductive heating element may be made of a far infrared material to form a heating element with low electromagnetic radiation.
  • a wire is used to connect the controller to the electrode 8.
  • the heating element comprises five layer structures, the two layers of the conductive heating layer are connected through the electrodes at opposite ends, the current direction is opposite, the insulating layer is spaced in the middle, the insulating layer is added up and down, the thickness of the insulating layer is increased as needed, and the five layers are pressed and synthesized. For a whole.
  • the heat generating layer is isolated from the air, and the current patterns of the two heat generating layers are the same, but the current directions are opposite.
  • the present invention does not cause harm to the human body, and is widely applicable, and is a flat and heat-generating body of low-electromagnetic radiation which is healthy and environmentally friendly.
  • the planar heating element provided by the embodiment of the present invention has been described in detail above. Variations in the specific embodiments and applications will be apparent to those of ordinary skill in the art in view of the embodiments of the invention. In view of the above, the description of the present invention should not be construed as limiting the invention, and any changes made in accordance with the inventive design are within the scope of the present invention.

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  • Central Heating Systems (AREA)
  • Surface Heating Bodies (AREA)
  • Resistance Heating (AREA)

Description

平面状发热体 技术领域
本发明涉及一种平面状发热体， 特别涉及一种低电磁辐射的平面状发热 体。 背景技术
面状发热体是一种通电后即能发热的面状体， 其具有发热及散热面积大， 传热均匀， 热效率高、 使用方便等特点， 被广泛的应用于桑拿房、 健身房、 干热式的足浴桶， 地暖、 日常家用电器等产品， 在使用过程中， 通过面状发 热体发出的热量来进行加热。 由于现有产品内部的电流一般都是单向的， 比 较容易产生电磁场， 就是采用曲线结构也无法全面的防止； 且在工艺和结构 上一般都是单面油墨印刷， 碳纤维排布或用其他导电发热材料根据要求进行 排列， 如中国实用新型专利 （专利号： 200720051633.0) 就公开了一种平面发 热体， 该平面发热体结构包括有碳纤维， 碳纤维经整列成平行， 碳纤维上下 设有密合的绝缘薄膜层， 碳纤维的两端设有平行电极； 所述碳纤维成定距离 平行设置。 这种平面发热体具有发热面积大， 可绕性强等优点。 但这种结构 的平面发热体也存在一定得缺点， 因为在这种结构的平面发热体中， 只有一 对电极， 因此碳纤维上的电流方向都是同一方向， 根据电磁定律， 同一方向 产生的磁场方向相同， 因此采用这种机构的平面发热体加热时往往会产生较 大的电磁场， 产生电磁辐射， 人们如长期处在这种环境下， 往往会对人们的 身体产生影响， 特别是对于孕妇和儿童很容易对身体造成危害。 发明内容
针对上述现有技术的不足和缺点， 本发明的目的在于发明一种新生产工 艺和产品结构， 在降低发热板表面电磁场强度的同时大大缩小了表面的温差， 提供一种低电磁辐射的平面状发热体。 本发明的实施例通过以下技术方案实现：
一种低电磁辐射的平面状发热体。 所述发热体包括位于上表面第一绝缘 层和位于下表面第三绝缘层， 在第一绝缘层和第三绝缘层之间设置第一导电 发热层与第二导电发热层， 第一导电发热层与第二导电发热层的形状一致， 在相邻的导电发热层之间设置第二绝缘层， 相邻的导电发热层之间电连接。 在导电发热层上设置电极， 相邻两层导电发热层的电极间利用导体电连 接。 导电发热层的形状一致， 电流方向相反。 导电发热层的形状可设计成任 意形状。 所述绝缘层也可为柔性绝缘层。 所述导电发热体也可采用低电磁辐 射的远红外材料。 在电极上利用导线连接控制器。 绝缘层层数和厚度可以调 整， 以符合基本绝缘， 加强绝缘等， 以便适应不同的场合。 本发明的优点是：
由于在上述技术方案中， 第一导电发热层和第二导电发热层的同一方向 一端的电极与电源连接， 而第一导电发热层和第二导电发热层的同一方向的 另一端的电极通过导体连接， 因此当这两个发热层通电时， 这两个导电发热 层会形成回路， 电流会先从一个发热体的电源一端流到另一端， 在经过另一 个发热体的另一端流回电源一端， 因此第一导电发热体和第二导电发热体上 的电流方向是相反的。 所以根据电磁定律， 第一导电发热体和第二导电发热 体产生的磁场方向也是相反的， 而且第一导电发热层与第二导电发热层的形 状一致， 因此第一导电发热体和第二导电发热体产生的磁场可以相互抵消。 该平面状发热体的表面几乎没有电磁辐射， 所以本发明不会对人体造成危害， 是一种健康环保的低电磁辐射的平面状发热体。 上述说明仅是本发明技术方案的概述， 为了能够更清楚了解本发明的技 术手段， 并可依照说明书的内容予以实施， 以下以本发明的较佳实施例并配 合附图详细说明如后。 本发明的具体实施方式由以下实施例及其附图详细给 出。 附图说明
图 1是本发明实施例提供的平面状发热体的结构示意图。 具体实施方式：
为了更好的理解本发明的技术方案， 下面结合附图详细的描述本发明提 供的实施例。
如图 1所示， 作为本发明的一个实施例， 该平面状发热体包括如图所示: 所述发热体包括位于上面的第一绝缘层 1与位于底面的第三绝缘层 6，在第一 绝缘层 1与第三绝缘层 6间设置第一导电发热层 2与第二导电发热层 4，在第 一导电发热层 2与第二导电发热层 4之间设置第二绝缘层 3，第一导电发热层 2与第二导电发热层 4之间电连接。 在第一导电发热层 2与第二导电发热层 4 上均设置电极 8，第一导电发热层 2与第二导电发热层 4上的电极 8间利用导 体 5电连接。
所述第一导电发热层 2与第二导电发热层 4的形状一致， 工作时的电流 方向相反， 根据电磁定律， 第一导电发热体 2和第二导电发热体 4产生的磁 场方向也是相反的， 所以产生的磁场可以相互抵消使得平面状发热体的表面 几乎没有电磁辐射； 且导电发热层的形状可以根据实际需要做成多边形或圆 锥曲线形等各种形状。
所述绝缘层均可以采用柔性的绝缘层， 以便制作柔性的发热体。
所述导电发热体可以采用远红外材料， 形成一种低电磁辐射的发热体。 在电极 8上利用导线连接控制器。
所述的发热体包括 5 个层结构， 两层导电发热层两端通过电极联通， 电 流方向相反， 中间隔有绝缘层， 上下加绝缘层， 绝缘层厚度根据需要增加， 5 层结构通过压合成为一个整体。 发热层与空气隔离， 两层发热层电流图形一 致， 但电流方向相反。
因此本发明不会对人体造成危害， 且适用面广， 是一种健康环保的低电 磁辐射的平面状发热体。 以上对本发明实施例所提供的一种平面状发热体进行了详细介绍。 对于 本领域的一般技术人员， 依据本发明实施例的思想， 在具体实施方式及应用 范围上均会有改变之处。 综上所述， 本说明书内容不应理解为对本发明的限 制， 凡依本发明设计思想所做的任何改变都在本发明的保护范围之内。

Claims

权 利 要 求 书
1、 一种低电磁辐射的平面状发热体， 其特征在于： 所述发热体包括上表 面第一绝缘层 （1 ) 和下表面第三绝缘层 （6)， 所述第一绝缘层 （1 ) 和第三 绝缘层 （6) 之间设有至少一层发热层， 相邻发热层之间设有绝缘层； 所述发 热层包括第一导电发热层 （2) 和第二导电发热层 （4)， 第一导电发热层 （2) 与第二导电发热层 （4) 的形状一致， 第一导电发热层 （2) 与第二导电发热 层 （4) 之间设有第二绝缘层 （3 )， 第一导电发热层 （2) 和第二导电发热层
(4) 的两端均设有电极 （8 )， 相邻两层导电发热层的电极 （8 ) 间利用导体
(5 ) 连接。
2、 如权利要求 1所述的一种低电磁辐射的平面发热体， 其特征在于： 第 一导电发热层 （2) 与第二导电发热层 （4) 的形状一致， 电流方向相反。
3、 如权利要求 1所述的一种低电磁辐射的平面发热体， 其特征在于： 所 述导电发热层可以根据实际需要做成多边形或圆锥曲线形等各种形状。
4、 如权利要求 1所述的一种低电磁辐射的平面发热体， 其特征在于： 所 述各绝缘层为柔性绝缘层或硬性绝缘层。
5、 如权利要求 1所述的一种低电磁辐射的平面发热体， 其特征在于： 所 述导电发热体可以采用远红外材料。
6、 如权利要求 1所述的一种低电磁辐射的平面发热体， 其特征在于： 在 电极 8上利用导体材料连接一起。
7、 如权利要求 1所述的一种低电磁辐射的平面发热体， 其特征在于： 所 述的发热体包括 5 个层结构， 中间隔有绝缘层、 上下加绝缘层， 发热层与空 气隔离， 绝缘层厚度根据需要调整， 5层结构通过压合或其它组合方式合成为 一个整体。
PCT/CN2009/070891 2009-01-15 2009-03-19 平面状发热体 WO2010081307A1 (zh)

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CN102612182A (zh) * 2012-03-15 2012-07-25 江苏米阳碳晶科技有限公司 一种低辐射碳晶电热板
CN110118379A (zh) * 2019-06-26 2019-08-13 东莞珂洛赫慕电子材料科技有限公司 一种电热超导采暖片

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