WO2012022097A1 - 一种瓷能发热体 - Google Patents

一种瓷能发热体 Download PDF

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Publication number
WO2012022097A1
WO2012022097A1 PCT/CN2010/080106 CN2010080106W WO2012022097A1 WO 2012022097 A1 WO2012022097 A1 WO 2012022097A1 CN 2010080106 W CN2010080106 W CN 2010080106W WO 2012022097 A1 WO2012022097 A1 WO 2012022097A1
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Prior art keywords
heat generating
insulating medium
source
porcelain
heat
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PCT/CN2010/080106
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English (en)
French (fr)
Inventor
钟秉霖
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酷科瓷能科技有限公司
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Application filed by 酷科瓷能科技有限公司 filed Critical 酷科瓷能科技有限公司
Priority to BRPI1005800A priority Critical patent/BRPI1005800A2/pt
Priority to KR2020117000033U priority patent/KR20130004574U/ko
Priority to RU2011123086/07A priority patent/RU2011123086A/ru
Priority to ZA2011/07873A priority patent/ZA201107873B/en
Publication of WO2012022097A1 publication Critical patent/WO2012022097A1/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
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • 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
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • 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
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/18—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being embedded in an insulating material

Definitions

  • the invention relates to the field of ohmic resistance heating, and more particularly to a porcelain heat generating body.
  • the insulating medium used in the market mainly includes: copper tube insulating medium, stainless steel insulating medium, alloy aluminum insulating medium, glass insulating medium, quartz tube, crystal insulating medium, etc., but all have their own defects, or the performance is unstable.
  • the core insulating medium mainly has two major categories of metal and non-metal.
  • Metal insulation medium external stainless steel material, copper material, etc., built-in heating tube is nickel-chromium alloy resistance wire, etc.
  • the basic principle is to insert the heating tube into the cup-shaped volume for heating; the metal insulation medium is made of stainless steel or copper as insulation material. , will be inevitable due to its congenital defects of scaling. Causes leakage and bursting events to occur during use. Any metal can not avoid scaling, reduce thermal conductivity, and consume energy. Moreover, since the expansion coefficient of the metal is greatly different from the expansion coefficient of the scale, the metal tube is easily broken, and leakage is the biggest hidden danger.
  • electric heaters at home and abroad generally use an electric heating method in which a resistance wire is placed in a metal tube to separate the resistance wire with a filling insulating powder, or an exposed heating method in which the resistance wire is bundled outside the insulating material.
  • the above heating method is adopted for the phosphating tank and the acid-base pool for heat treatment.
  • Non-metallic insulating medium The main material is quartz tube, glass and crystal are all insulated and not easy to scale. However, the cost of crystal is too high. Quartz and glass tubes are unstable in the environment of quenching and rapid heating, easy to burst, and can not be changed in shape, greatly reducing the extensiveness of application is its biggest flaw. In recent years, heaters using PTC ceramic quartz tubes have also been used for heaters, but they all have many common defects; the service life is too short, the volume is large, the efficiency is low, the energy consumption is large, the instability is poor, and the safety is poor.
  • the technical problem solved by the present invention is to provide a porcelain heat generating body with longer service life, energy saving and environmental protection, and higher safety factor.
  • the heat generating source is made of an alloy heating wire and/or a tungsten wire; the insulating medium and the heat generating source are formed by hot press sintering.
  • the ceramic material is one or more of silicon nitride, aluminum nitride, titanium nitride or aluminum oxide.
  • the alloy heating wire is a nickel-chromium heating wire.
  • the heat source is composed of several sets of small heat sources.
  • the porcelain heat generating body provided by the invention has the porcelain heat generating body provided by the invention, and the heat generating device of the heat source is separated from the traditional two-layer insulating medium, and only one layer of insulating medium is used to isolate the heat source, thereby reducing the heat energy.
  • the loss in conduction also greatly improves the risk of leakage when the traditional heating element is damaged and cracked, which improves the safety of the wide application and prolongs the service life of the product.
  • Fig. 1 is a schematic view showing the structure of a porcelain heat generating body in the present invention.
  • FIG. 1 is a schematic structural view of a porcelain heat generating body according to the present invention.
  • the porcelain heat generating body 1 provided in this embodiment includes a heat generating source 12 and an insulating medium 11 made of a ceramic material.
  • the insulating medium 11 encloses the heat generating source 12, and the heat generating source 12 is connected to the conductive lead leg 13.
  • the insulating medium 11 is made of ceramic; the ceramic material is silicon nitride; the heat source 12 is made of alloy heating wire and/or tungsten wire; and the insulating medium 11 and the heat source 12 are formed by hot pressing.
  • the porcelain heat generating body 1 provided in this embodiment includes a heat generating source 12 and an insulating medium 11 made of a ceramic material.
  • the insulating medium 11 encloses the heat generating source 12, and the heat generating source 12 is connected to the conductive lead leg 13.
  • the insulating medium 11 is made of ceramic; the ceramic material is aluminum nitride; the heat source 12 is made of alloy heating wire and/or tungsten wire; and the insulating medium 11 and the heat source 12 are formed by hot pressing.
  • the alloy heating wire can be a nickel-chromium heating wire.
  • the porcelain heat generating body 1 provided in this embodiment includes a heat generating source 12 and an insulating medium 11 made of a ceramic material.
  • the insulating medium 11 encloses the heat generating source 12, and the heat generating source 12 is connected to the conductive lead leg 13.
  • the insulating medium 11 is made of ceramic; the ceramic material is titanium nitride; the heat source 12 is made of alloy heating wire and/or tungsten wire; and the insulating medium 11 and the heat source 12 are formed by hot pressing.
  • the porcelain heat generating body 1 provided in this embodiment includes a heat generating source 12 and an insulating medium 11 made of a ceramic material.
  • the insulating medium 11 encloses the heat generating source 12, and the heat generating source 12 is connected to the conductive lead leg 13.
  • the insulating medium 11 is made of ceramic; the ceramic material is aluminum oxide; the heat source 12 is made of alloy heating wire and/or tungsten wire; and the insulating medium 11 and the heat source 12 are formed by hot pressing.
  • the porcelain heat generating body 1 provided in this embodiment includes a heat generating source 12 and an insulating medium 11 made of a ceramic material.
  • the insulating medium 11 encloses the heat generating source 12, and the heat generating source 12 is connected to the conductive lead leg 13.
  • the insulating medium 11 is made of ceramic; the ceramic material is composed of at least two of silicon nitride, titanium nitride, aluminum nitride and aluminum oxide; the heat source 12 is made of alloy heating wire and/or tungsten wire; 11 and the heat source 12 is formed by hot pressing sintering.
  • the heat source 12 can be comprised of several sets of small heat sources.
  • the present invention has the following advantages:
  • the silicon nitride/aluminum nitride/titanium nitride/alumina material in the ceramic heating element is an insulating material, and its leakage current is 0.052 mA, while the general household appliance (specified leakage current needs) Less than 0.25 mA).
  • the safety test in water proves that the voltage is less than 36V, the leakage resistance is large and 300 kiloohms, which is not enough to cause electric shock to the human body.
  • the product of the invention can be used under the voltage of 6V ⁇ 380V.
  • the porcelain heat generating body uses electricity as energy, does not generate exhaust gas emissions, utilizes public power resources, is a low carbon-discharging component; high energy utilization rate, currently used stainless steel heating element in the industry The heat benefit rate is only 80% ⁇ 90%, and the heat efficiency rate of the porcelain heat generating body of the invention can reach more than 98%, and the energy is saved effectively.
  • the porcelain heat generating body of the present invention When the porcelain heat generating body of the present invention is applied to a water heater, the heating element generates a trace electromagnetic effect, and the heat energy is transferred to the heat generating body to pass the water flow, and a small amount of electromagnetic field also magnetizes the water, and often uses a magnetized water shower to wash the face. Helps with protection, beauty, health, longevity and many other benefits.
  • the porcelain heat generating body of the present invention is applied to a hot drinking water system of a water dispenser, and drinking magnetized water contributes to health.
  • the porcelain heat generating body of the invention is used in the hot water system of the washing machine, and can effectively reduce the use of the washing powder, thereby protecting the link and saving money.
  • high temperature resistance can work for a long time under the condition of less than 1200 °C.
  • Corrosion resistance The porcelain heat generating body is subjected to a 6-hour boiling test in a 30% sodium hydroxide solution, the average corrosion rate is 0.43 g/m 2 h, and a 6-hour boiling test is performed in a 5% sulfuric acid solution, and the average corrosion rate is 9.21g/m 2 h, while the corrosion rate of stainless steel in the same environment is 81 ⁇ 121g/m 2 h. Therefore, the acid-resistant ability of the porcelain heat generating body of the present invention is much stronger than that of the metal heating element.
  • the flexural strength of the porcelain heat generating body of the present invention is greater than 700Mpa, and the calculated heat resistance of the heat generating device in the water of 100 ° C is 41 cm 2 and the power is 1500 W at 50 to 60 MPa. Will not break.

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  • Resistance Heating (AREA)

Description

一种瓷能发热体 技术领域
本发明涉及欧姆电阻加热的领域，确切地说是指一种瓷能发热体。
背景技术
近几年来，随着我国城市电网改造的深入进行，用电环境大有改观。即热式电热水器以其轻巧、快捷、方便的特点逐渐受到了越来越多消费者的青睐。由于即热式电热水器是在使用时带电工作，所以安全问题就显得尤为突出，而其核心部件——绝缘介质的安全性能的优劣与否，更是即热式电热水器安全与否的决定性因素。目前市场上用的绝缘介质主要有：紫铜管绝缘介质、不锈钢绝缘介质、合金铝绝缘介质、玻璃绝缘介质、石英管、水晶绝缘介质等等，但都存在各自的缺陷，要么性能不稳定，高耗能、安全性低、热效益率低、寿命短，体积大，要么价格昂贵，使用者无法接受。在工业用途应用、机械生产领域，需流体或固体的加热领域等等使用传统的绝缘介质或装置，均面对同样的难题。
目前核心绝缘介质主要有金属和非金属两大类。
金属绝缘介质：外部不锈钢材质，紫铜材质等，内置发热管为镍铬合金电阻丝等，基本原理是将发热管插入杯状容积中进行加热；金属绝缘介质无论其是选用不锈钢还是紫铜作为绝缘材质，都会由于其易结水垢的先天缺陷不可避免。造成在使用过程中，漏电、爆裂事件时有发生。任何金属都无法避免结水垢，降低导热效率，耗能。而且由于金属的膨胀系数与水垢的膨胀系数有很大不同，故金属管容易破裂，漏电是最大隐患。目前，国内外的电加热器普遍采用金属管内放置电阻丝用填充绝缘粉分隔电阻丝的电加热方式，或是电阻丝捆绑在绝缘材料外的暴露式加热方式。比如，现在市场上的电热水器、电热水瓶、电饭煲、饮水机、电热杯、电熨斗、电吹风、电热锅、电消毒柜、取暖器、水疗浴缸热水加热系统、塑料压机、工业用的磷化池、热处理用的酸碱池等均采用以上加热方式。
非金属绝缘介质：主要材质有石英管，玻璃、水晶都绝缘且不易结垢。但水晶的成本太高，石英及玻璃管在骤冷骤热的环境下性质不稳定，容易炸裂，而且在形状上固定不可变化，大大减少了应用的广泛性是其最大的敝处。近几年也有采用PTC陶瓷石英管的加热器用于取暖器，但它们都存在多个共同的缺陷；使用寿命太短，体积大，效率低，能耗大，不稳定，安全性差。
另外，还有一种电磁发热及微波发热方式，此种发热方式的缺点是发热体耗电量高，体积大并受许多条件限制，如形状、空间等，而且辐射大，如果长期使用可能对人体健康造成伤害。
 技术问题
针对上述缺陷，本发明解决的技术问题在于提供一种瓷能发热体，使用寿命更长，节能环保，安全系数更高。
技术解决方案
为了解决以上的技术问题，本发明提供的瓷能发热体，包括发热源、及由陶瓷材料制成的绝缘介质，所述绝缘介质将所述发热源包裹在内，所述发热源与导电引出脚连接。
优选地，所述发热源由合金电热丝和/或钨丝制成；所述绝缘介质和所述发热源经热压烧结而成。
优选地，所述陶瓷材料为氮化硅、氮化铝、氮化钛或三氧化二铝中的一种或者几种。
优选地，所述合金电热丝为镍铬电热丝。
优选地，所述发热源是由若干组小发热源组成。
 有益效果
本发明提供的瓷能发热体与现有技术相比，本发明提供的瓷能发热体，相对传统二层绝缘介质隔离发热源的发热装置，只有一层绝缘介质隔离发热源，减少了热能在传导中的损失，同时又极大地改进了传统发热体损坏裂开时产生漏电的危险，提升了广泛应用的安全性，也延长了产品的使用寿命。
附图说明
图1为本发明中瓷能发热体的结构示意图。
本发明的实施方式
为了本领域的技术人员能够更好地理解本发明所提供的技术方案，下面结合具体实施例进行阐述。
请参见图1，该图为本发明中瓷能发热体的结构示意图。
实施例1
本实施例提供的瓷能发热体1，包括发热源12、及由陶瓷材料制成的绝缘介质11，绝缘介质11将发热源12包裹在内，发热源12与导电引出脚13连接。
绝缘介质11由陶瓷制成；陶瓷材料为氮化硅；发热源12由合金电热丝和/或钨丝制成；绝缘介质11和发热源12经热压烧结而成。
实施例2
本实施例提供的瓷能发热体1，包括发热源12、及由陶瓷材料制成的绝缘介质11，绝缘介质11将发热源12包裹在内，发热源12与导电引出脚13连接。
绝缘介质11由陶瓷制成；陶瓷材料为氮化铝；发热源12由合金电热丝和/或钨丝制成；绝缘介质11和发热源12经热压烧结而成。该合金电热丝可为镍铬电热丝。
实施例3
本实施例提供的瓷能发热体1，包括发热源12、及由陶瓷材料制成的绝缘介质11，绝缘介质11将发热源12包裹在内，发热源12与导电引出脚13连接。
绝缘介质11由陶瓷制成；陶瓷材料为氮化钛；发热源12由合金电热丝和/或钨丝制成；绝缘介质11和发热源12经热压烧结而成。
实施例4
本实施例提供的瓷能发热体1，包括发热源12、及由陶瓷材料制成的绝缘介质11，绝缘介质11将发热源12包裹在内，发热源12与导电引出脚13连接。
绝缘介质11由陶瓷制成；陶瓷材料为三氧化二铝；发热源12由合金电热丝和/或钨丝制成；绝缘介质11和发热源12经热压烧结而成。
实施例5
本实施例提供的瓷能发热体1，包括发热源12、及由陶瓷材料制成的绝缘介质11，绝缘介质11将发热源12包裹在内，发热源12与导电引出脚13连接。
绝缘介质11由陶瓷制成；陶瓷材料由氮化硅、氮化钛、氮化铝和三氧化二铝中至少两种组成；发热源12由合金电热丝和/或钨丝制成；绝缘介质11和发热源12经热压烧结而成。
在上述各个实施例中，该发热源12可由若干组小发热源组成。
与现有技术相比，本发明具有下列优点：
1、安全可靠：本瓷能发热体中的氮化硅/氮化铝/氮化钛/三氧化二铝材料是绝缘材料，其漏电电流为0.052mA，而一般家用电器(规定的漏电电流需小于0.25mA)。经测试，当输入电压为220V的瓷能发热体在水中工作时突然发生意外折断损坏，在水中实验安全测试证明，电压小于36V，漏电阻抗大与300千欧母，不足以对人体造成触电伤害，本发明产品在6V~380V电压下均可使用。
2、永远不结水垢：发热体是整个电热水器工作的“心脏”，而水垢是热水器的“天敌”，尤其在我国很大一部分地区都属于高垢地区，因水垢引发的热水器安全事故层出不穷，本发明技术的采用将从根本上解决热水器结垢产生的安全问题。
3、节能环保，能量利用率高：本瓷能发热体利用电为能源，不会产生废气排放，利用公共电力资源，属低排炭元件；能量利用率高，目前行业内用的不锈钢发热体的热效益率最高只有80%~90%，而本发明的瓷能发热体热效益率可以达到98%以上，有效的节约能源。
4、本发明的瓷能发热体在应用于热水器时，发热体会产生微量电磁效应，在发热体传递热能给经过水流的同时，也会将微量的电磁场将水磁化，经常使用磁化水淋浴洗脸，有助保、美容、健康、长寿及其他多种益处。本发明的瓷能发热体在应用于饮水机的热饮水系统，饮用磁化水，有助健康。本发明的瓷能发热体在用于洗衣机热水系统，可有效减少使用洗衣粉，既保护环节，又节省金钱。
5、耐高温：在小于1200℃的工况下可长时间工作。
6、耐腐蚀：瓷能发热体在30%氢氧化钠溶液中进行6小时沸腾试验，平均腐蚀率为0.43g/m2h，在5%硫酸溶液中进行6小时沸腾试验，平均腐蚀率为9.21g/m2h，而不锈钢在相同环境下腐蚀率达81~121g/m2h。所以，本发明的瓷能发热体的抗酸碱能力远强于金属发热体。
7、高强度：本发明的瓷能发热体的抗折强度均大于700Mpa，而经计算，在100℃的水中，散热面积为41cm2、功率为1500W的本发热装置在50~60Mpa的强度都不会折断。
对所公开的上述实施例的说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (5)

  1. 一种瓷能发热体，其特征在于，包括发热源、及由陶瓷材料制成的绝缘介质，所述绝缘介质将所述发热源包裹在内，所述发热源与导电引出脚连接。
  2. 根据权利要求1所述的瓷能发热体，其特征在于，所述发热源由合金电热丝和/或钨丝制成；所述绝缘介质和所述发热源经热压烧结而成。
  3. 根据权利要求1所述的瓷能发热体，其特征在于，所述陶瓷材料为氮化硅、氮化铝、氮化钛或三氧化二铝中的一种或者几种。
  4. 根据权利要求2所述的瓷能发热体，其特征在于，所述合金电热丝为镍铬电热丝。
  5. 根据权利要求1所述的瓷能发热体，其特征在于，所述发热源是由若干组小发热源组成。
PCT/CN2010/080106 2010-08-17 2010-12-22 一种瓷能发热体 WO2012022097A1 (zh)

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CN103354675A (zh) * 2013-05-31 2013-10-16 镇江天信电器有限公司 一种新型的电加热管
CN106912120A (zh) * 2015-08-21 2017-06-30 重庆利迈陶瓷技术有限公司 一种陶瓷电热体
CN106007661A (zh) * 2016-05-23 2016-10-12 湖南省醴陵市电热电器瓷厂 一体式陶瓷发热体的制作方法及一体式陶瓷发热体
CN108577130A (zh) * 2018-06-26 2018-09-28 珠海市佳陶瓷有限公司 一种陶瓷内置加热体的电吹风
CN111528529B (zh) * 2020-04-30 2022-07-12 四川三联新材料有限公司 加热器具加热元件及其制备方法
CN113712363A (zh) * 2021-08-13 2021-11-30 珠海市佳一陶瓷有限公司 电吹风

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CN101945506A (zh) 2011-01-12
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AU2011201940B2 (en) 2012-09-20
ZA201107873B (en) 2013-05-29
EP2421332A3 (en) 2012-05-02
RU2011123086A (ru) 2012-12-20
AU2011100539A4 (en) 2011-06-16
EP2421332A2 (en) 2012-02-22
AU2011201940A1 (en) 2011-06-23
KR20130004574U (ko) 2013-07-25

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