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WO2006111048A1 - An electric heating blower - Google Patents

An electric heating blower Download PDF

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Publication number
WO2006111048A1
WO2006111048A1 PCT/CN2005/000698 CN2005000698W WO2006111048A1 WO 2006111048 A1 WO2006111048 A1 WO 2006111048A1 CN 2005000698 W CN2005000698 W CN 2005000698W WO 2006111048 A1 WO2006111048 A1 WO 2006111048A1
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WO
WIPO (PCT)
Prior art keywords
film
ceramic
electric
heating
ceramic base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2005/000698
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French (fr)
Chinese (zh)
Inventor
Kam-Tao Lo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEAUTI-GEAR INTERNATIONAL Ltd
Original Assignee
BEAUTI-GEAR INTERNATIONAL Ltd
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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/22—Helmets with hot air supply or ventilating means, e.g. electrically heated air current
    • A45D20/38—Arrangement of the electric heating means
    • 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
    • H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • H05B3/265—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an inorganic material, e.g. ceramic

Definitions

  • the utility model relates to the technical field of electric heating of household appliances, in particular to an improvement of the structure of an electric heater of an electric heating fan, and the utility model can be applied to a hair dryer with a cosmetic effect and an electric heater for heating.
  • Electric arc fans which are commonly used at present, such as hair dryers for drying hair and heaters for winter heating, generally use a nickel-chromium alloy resistance wire wound on a mica holder as an electric heater, Fig. 1
  • Fig. 1 It is a schematic diagram of the internal structure of the existing hair dryer, in which the electric heater is wound by a nickel-chromium alloy resistance wire.
  • 2 is a common winding form of the conventional electric hair dryer resistance wire
  • FIG. 2A is a spring coil type
  • FIG. 2B is a triangular type
  • FIG. 2C is a long arc form.
  • U.S. Patent No. 6,380,225, B1 entitled "Hair dryers, s. .
  • the above prior art attempts to reduce noise by different winding methods of the resistance wire. Although some winding forms have a certain effect on noise reduction, the potential for noise reduction is very limited.
  • the existing electrothermal fan has the following defects:
  • the resistance wire has a long distribution, occupying a large space, and the bracket is complicated, causing large wind resistance and generating large noise; it is easy to cause uneven winding of the resistance wire, thereby resulting in If the local temperature is too high, the resistance wire is easy to oxidize and fracture, shortening the service life of the electric heating fan; the resistance wire will emit light, the efficiency of electrothermal conversion is not high, and the energy is wasted; the far-infrared ray indirectly heated by the electric heater composed of nickel-chromium resistance wire Ceramic radiators have low emission efficiency.
  • the electric fan is used for the motor that drives the fan, and both the AC motor and the DC motor must have a step-down device.
  • the technical problem to be solved by the utility model is to improve the uniformity of heating of the electric heating fan, reduce the noise and make the electric heating fan have a certain physiotherapy and health care effect.
  • Another technical problem to be solved by the present invention is to make the pressure reducing device of the electrothermal fan as small as possible and simple to assemble.
  • the utility model adopts the following technical solutions: The newly developed ceramic base film heating element is used as the heater of the electric heating fan.
  • the electric heating fan of the utility model comprises: a casing with an air inlet and an air outlet, and is installed at A fan in the casing and a driving motor thereof, an electric heater for heating the airflow, and a power control portion, wherein the electric heater is a ceramic base film heating element capable of emitting far infrared rays.
  • the ceramic-based film-heating element has the physical property of being uniform in heat generation and capable of emitting far-infrared rays after heating, and the smooth and flat surface thereof makes the wind resistance of the ceramic-based film-heating member small.
  • the above-mentioned ceramic base film heating element is also used as a step-down resistor of a step-down device connected to a driving motor, which is a ceramic base film heating element serially connected in a circuit or two pieces connected in parallel Ceramic base film heating element.
  • the ceramic-based film-heating member not only functions as a step-down resistor, but also functions as an auxiliary electric heater; since the step-down resistor has a sheet-like or other-shaped rigid member, a mounting hole can be provided, so assembly is very simple.
  • the high-temperature ceramics containing alumina; the ceramic substrate is a high-quality ceramic containing alumina in a thickness of 0. 5 ⁇ 3.
  • the film is a layered electrode-shaped resistive film that is sintered at a high temperature on the surface of the ceramic substrate.
  • the ceramic base film heating element used as the electric heater has a cylindrical shape, and the heat generating element is A heat generating film is attached to the outer wall surface of the cylindrical ceramic base.
  • the ceramic-based film-heating element of such a shape and structure has a large heating area and a small wind resistance.
  • the ceramic base film heating element is generally mounted on a mica board bracket and is mounted between the fan and the air outlet.
  • the electric heating fan of the utility model has the following beneficial effects:
  • the surface of the ceramic substrate is sprayed with a resistive paste and sintered into a planar heat-generating film with good uniformity, uniform temperature distribution and long service life.
  • the directly heated ceramic matrix can produce strong far infrared rays with health effects.
  • FIG. 1 is a schematic view showing the internal structure of a conventional electric hair dryer
  • FIG. 2 is a common winding form of a conventional electric hair dryer resistance wire
  • FIG. 3 is a schematic view showing the structure of a cylindrical ceramic base-attached film heating element of the present invention.
  • 4 is a schematic structural view of a square tubular ceramic base film-heating element according to the present invention
  • FIG. 5 is a schematic structural view of a cone-shaped cylindrical ceramic base film-heating element of the present invention
  • FIG. 6 is a radial cylindrical ceramic.
  • FIG. 7 is a schematic view showing the internal structure of the electric hair dryer of the present invention
  • FIG. 8 is a ceramic base attached in a circuit using a piece of the substrate.
  • Figure 9 is a schematic circuit diagram of a step-down resistor using a two-piece parallel ceramic sub-film heat-generating member as a fan DC motor;
  • Figure 10 is a schematic view showing the internal structure of a hair dryer using a cylindrical ceramic-based film-heating member as a heater, and a sheet-like ceramic-based film-heating member as a step-down resistor of a fan motor;
  • Figure 11 is a cylindrical ceramic base.
  • Fig. 12 is the assembly of the electric hair dryer using the cylindrical ceramic base film heating element as the heater and the stepping resistor of the fan motor schematic diagram.
  • the electric heating fan of the present invention comprises: a casing with an air inlet and an air outlet, a fan 2 installed in the casing 1 and its driving motor 3, an electric heater 4 for heating the airflow, and a power supply control.
  • the electric heater 4 is a ceramic base film heating element capable of emitting far infrared rays.
  • the power control section includes a step-down device connected to the drive motor 3, which also uses a ceramic-based film heat-generating member as the step-down resistor 6. 0 ⁇ ; between 0. 5 ⁇ 3. 0 ⁇ ; The thickness is between 0. 5 ⁇ 3.
  • the heating film is a resistive paste containing various elements such as antimony, silicon boron, antimony oxide, antimony oxide, antimony oxide, etc., and the resistive paste does not contain lead, mercury, antimony, hexavalent chromium, polyether benzene, acid benzene, etc.
  • the thermal expansion coefficient of the substance is the same as that of the ceramic substrate.
  • the resistive paste is coated on the surface of the ceramic substrate, and then sintered at a high temperature of 130 CTC to form a heat-generating film attached to the surface of the ceramic substrate. On both ends of the ceramic substrate, the upper electrode is also sprayed. The slurry is placed in a convenient connection for electrical connection and then sintered at a high temperature to form an electrode firmly connected to the heat-generating film, thereby forming a ceramic-based film-heating member, which is a novel electric heater.
  • the ceramic base film heating element is used as the step-down resistor 6, and the manufacturing process is required to be compared to the electric heater 4 Be high.
  • the ratio of germanium, silicon, boron, antimony oxide, antimony oxide, antimony oxide and other elements in the resistive film the purity of the binder, the size and uniformity of various elemental particles, as well as the thickness of the spray and the spraying process. Affecting the physical properties of the resistive film, if the resistive film attached to the ceramic substrate is not uniform, the rotational speed of the DC motor will be constantly changed, and the continuous change of the rotational speed will inevitably cause a large noise and affect the service life.
  • we have mastered the spraying process of the resistive film that can obtain the stable resistance value and make the motor have a stable rotating speed according to the different power and voltage required by the DC motor.
  • the ceramic base film heating element as the electric heater 4 can be designed in different shapes, such as a cylindrical shape (Fig. 3), a square tube shape (Fig. 4), a cone shape (Fig. 5), or a column having a radial cross section. Shape ( Figure 6).
  • the heat generating film is attached to the outer wall surface of the cylindrical ceramic base.
  • the operating voltage of the fan motor in the hair dryer product should not be too high, and its working voltage is generally 24 volts or less.
  • the power supply of these DC motors is mostly converted from 110V or 220V AC. Therefore, a ceramic-based film-heating member can be used as the step-down resistor 6 of the fan motor, and the circuit principle thereof is as shown in Figs. 8 and 9.
  • a ceramic base film heating element serially connected in the circuit is used as the step-down resistor 6 of the fan DC motor, and the rectifier circuit is composed of four diodes, and the AC power source is stepped down by the ceramic-based film heating element.
  • Fig. 9 shows the use of two parallel ceramic sub-film heat-generating members as the step-down resistor 6 of the fan DC motor.
  • the other connection relationship is exactly the same as that of Fig. 8.
  • the ceramic base film heating element can also be used as the step-down resistor 6 of the AC fan motor (not shown).
  • the ceramic base film heating element is also used as the auxiliary resistor of the electric blower as the step-down resistor 6; since the step-down resistor 6 is a rigid piece in the form of a sheet or other shape, a mounting hole can be provided (Fig. 7), Assembly is very convenient.
  • FIG. 7 is a schematic structural view of an electric hair dryer according to an application example of the present invention.
  • Figure 7 shows a cylindrical ceramic base film heating element as an electric heater 4, sheet
  • the ceramic base film-heating members are used as the step-down resistors 6, which are both mounted on the mica holder 5 between the fan 2 and the air outlet.
  • a cylindrical ceramic base film 3 ⁇ 4 hot member is used as the electric heater 4 of the electric blower, and a sheet-like ceramic base film heat generating member is used as the fan 2 to drive the step-down resistor 6 of the motor. It also functions as an auxiliary heater.
  • a cylindrical ceramic-based film-heating member is used as the electric heater 4 of the electric blower and the step-down resistor 6 (also an auxiliary heater) for driving the motor. It is also possible to use the heat-generating film of a part of the resistance section of the ceramic-based film-heating element as the electric heater 4 as the step-down resistor 6 of the fan motor, making the structure of the hair dryer simpler and more compact.
  • the working principle of the electric heating fan of the utility model is as follows: In the energized state, the resistance heating film on the surface of the ceramic-based film-heating element 4 first heats up, directly heats the ceramic substrate, and the heated ceramic substrate emits far-infrared rays, flowing over it. The air is heated, and the heated gas is blown out of the air outlet by the forced air flow generated by the fan 2 installed in the air inlet, thereby obtaining high electrothermal conversion efficiency, far infrared ray emission efficiency, and small wind resistance.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)

Abstract

An electric heating blower uses a film heating element attached on a ceramic base as an electric heater and a voltage-dropping resistor for the fan motor. Said film heating element is an electric heating film high sintered on a ceramic base with an electrode. The shape of the electric heater made of the electric heating film attached on a ceramic base is cylindrical. The heating film is attached on the outer wall of the cylindrical ceramic base. The electric heater radiates health protecting far infrared ray when it is heating. The voltage-dropping resistor made of film heating element attached on the ceramic base is sheet or cylindrical, while the resistor is connected in series or in parallel in a power control circuit of the blower. The blower of the present invention is compacted, simple, and possesses an even temperature distribution, small wind resistance, low noise, a long life and a physiotherapeutic health protecting function because of the far infrared ray. The blower is well used as a hair dryer or a home heater unit.

Description

一种电热风机 技术领域  Electric heating fan

本实用新型涉及家用电器的电加热技术领域， 尤其涉及对电热风机的 电加热器结构的改进， 实用新型可适用于有美容作用的电吹风机以及取暖 用的电暖风机。 背景技术 ' 目前普遍使用的电热式风机， 如吹干头发的电吹风机以及用于冬天取 暖的暖风机， 一般都是采用缠绕在云母支架上的镍铬合金电阻丝作为电加 热器的， 图 1 是现有电吹风机的内部结构示意图， 其中的电加热器由镍铬 合金电阻丝缠绕而成。 图 2是现有电吹风机电阻丝常见的几种缠绕形式， 图 2A为弹簧圈式，图 2B为三角形式，图 2C为长弧形式。名称为 "Hair dryer employing far-infrared radiation "的美国 US6378225B1 专利公开了一 种使用一种能发射远红外线的陶瓷散热器的吹风机， 该陶瓷散热器悬挂在 支架上， 其外围缠绕有镍铬电阻丝。 上述现有技术都试图通过电阻丝的不 同缠绕方式来减少噪音， 虽然有些缠绕形式对降低噪音有一定效果， 但其 降噪的潜力非常有限。 归纳起来， 现有的电热式风机存在如下缺陷： 电阻 丝分布较长， 占据的空间大， 且支架复杂， 引起风阻大， 产生较大的噪音； 很容易造成电阻丝缠绕不均匀， 由此产生局部温度过高， 使电阻丝易氧化 断裂， 缩短了电热风机的使用寿命； 电阻丝会发光， 电热转化的效率不高， 浪费能源； 镍铬电阻丝组成的电加热器间接加热的远红外射线陶瓷散热器 的发射效率低。 另外， 电热式风机用于带动风扇的电机， 无论是交流电机还是直流电 机都必须有降压装置。 如很多电热式风机都要使用 1. 5V〜24V的直流电机， 而这些直流电机的供电多是由 120V或 230V的交流电转换而成， 目前小型 家用电器产品直流电机常用的几种变换电压的手段及其缺点如下： 1.用电 阻或电容降压， 其缺点是体积庞大， 目前已很少应用； 2、 使用线圈变压器 降压， 其缺点是成本高， 而且体积也较大； 3、 使用镍络电阻降压， 虽然比 较经济， 但制造工序多， 体积相对来说也比较大。 发明内容 本实用新型要解决的技术问题是改善电热式风机加热的均匀性，降低噪 音而且使电热式风机具有一定理疗保健效果。 本实用新型要解决的另一个技术问题是使电热式风机的降压装置尽可 能体积小， 而且装配简单。 本实用新型采用如下技术方案： 采用新开发出来的陶瓷基附膜发热件 作为电热式风机的加热器， 因此， 本实用新型的电热风机包括：带有进风口 和出风口的机壳、 安装在机壳内的风扇及其驱动电机、 加热气流的电加热 器和电源控制部分， 所述电加热器为能发射远红外线的陶瓷基附膜发热件。 陶瓷基附膜发热件的具有发热均匀、 且加热后能发射远红外线的物理特性， 其光滑平整的表面使得陶瓷基附膜发热件的风阻小。 另外， 还采用上述陶瓷基附膜发热件作为与驱动电机连接的降压装置 的降压电阻， 该降压电阻是一片串接在电路中的陶瓷基附膜发热件或是两 片并接的陶瓷基附膜发热件。 此时陶瓷基附膜发热件不仅充当降压电阻的 角色， 而且还能作为辅助电加热器； 由于降压电阻呈片状或其他形状的刚 性件， 可以设置安装孔， 因此装配非常简单。 所述陶瓷基附膜发热件是在陶瓷基体的部分表面附上一层带有电极的 发热膜； 陶瓷基体是厚度在 0. 5〜3. 0毫米之间的含有氧化铝的优质陶瓷； 发热膜则是经高温烧结在陶瓷基体表面上的一层带电极的面状电阻膜。 用作电加热器的陶瓷基附膜发热件的形状结构呈圆筒状， 该发热件是 在圆筒状的陶瓷基的外壁表面附着发热膜。 这种形状结构的陶瓷基附膜发 热件发热面积大、 风阻小。 The utility model relates to the technical field of electric heating of household appliances, in particular to an improvement of the structure of an electric heater of an electric heating fan, and the utility model can be applied to a hair dryer with a cosmetic effect and an electric heater for heating. BACKGROUND OF THE INVENTION Electric arc fans, which are commonly used at present, such as hair dryers for drying hair and heaters for winter heating, generally use a nickel-chromium alloy resistance wire wound on a mica holder as an electric heater, Fig. 1 It is a schematic diagram of the internal structure of the existing hair dryer, in which the electric heater is wound by a nickel-chromium alloy resistance wire. 2 is a common winding form of the conventional electric hair dryer resistance wire, FIG. 2A is a spring coil type, FIG. 2B is a triangular type, and FIG. 2C is a long arc form. U.S. Patent No. 6,380,225, B1, entitled "Hair dryers, s. . The above prior art attempts to reduce noise by different winding methods of the resistance wire. Although some winding forms have a certain effect on noise reduction, the potential for noise reduction is very limited. To sum up, the existing electrothermal fan has the following defects: The resistance wire has a long distribution, occupying a large space, and the bracket is complicated, causing large wind resistance and generating large noise; it is easy to cause uneven winding of the resistance wire, thereby resulting in If the local temperature is too high, the resistance wire is easy to oxidize and fracture, shortening the service life of the electric heating fan; the resistance wire will emit light, the efficiency of electrothermal conversion is not high, and the energy is wasted; the far-infrared ray indirectly heated by the electric heater composed of nickel-chromium resistance wire Ceramic radiators have low emission efficiency. In addition, the electric fan is used for the motor that drives the fan, and both the AC motor and the DC motor must have a step-down device. For example, many electric fans use 1. 5V~24V DC motors, and the power supply of these DC motors is mostly converted from 120V or 230V AC. The commonly used methods of converting voltages for DC motors of household electrical appliances and their disadvantages are as follows: 1. Depressurization with resistors or capacitors, which has the disadvantage of being bulky and rarely used at present; 2. Using a coil transformer to reduce voltage, the disadvantage is The cost is high, and the volume is also large; 3, using nickel-resistance resistor to reduce pressure, although more economical, but the manufacturing process is more, the volume is relatively large. SUMMARY OF THE INVENTION The technical problem to be solved by the utility model is to improve the uniformity of heating of the electric heating fan, reduce the noise and make the electric heating fan have a certain physiotherapy and health care effect. Another technical problem to be solved by the present invention is to make the pressure reducing device of the electrothermal fan as small as possible and simple to assemble. The utility model adopts the following technical solutions: The newly developed ceramic base film heating element is used as the heater of the electric heating fan. Therefore, the electric heating fan of the utility model comprises: a casing with an air inlet and an air outlet, and is installed at A fan in the casing and a driving motor thereof, an electric heater for heating the airflow, and a power control portion, wherein the electric heater is a ceramic base film heating element capable of emitting far infrared rays. The ceramic-based film-heating element has the physical property of being uniform in heat generation and capable of emitting far-infrared rays after heating, and the smooth and flat surface thereof makes the wind resistance of the ceramic-based film-heating member small. In addition, the above-mentioned ceramic base film heating element is also used as a step-down resistor of a step-down device connected to a driving motor, which is a ceramic base film heating element serially connected in a circuit or two pieces connected in parallel Ceramic base film heating element. At this time, the ceramic-based film-heating member not only functions as a step-down resistor, but also functions as an auxiliary electric heater; since the step-down resistor has a sheet-like or other-shaped rigid member, a mounting hole can be provided, so assembly is very simple. The high-temperature ceramics containing alumina; the ceramic substrate is a high-quality ceramic containing alumina in a thickness of 0. 5~3. 0 mm; The film is a layered electrode-shaped resistive film that is sintered at a high temperature on the surface of the ceramic substrate. The ceramic base film heating element used as the electric heater has a cylindrical shape, and the heat generating element is A heat generating film is attached to the outer wall surface of the cylindrical ceramic base. The ceramic-based film-heating element of such a shape and structure has a large heating area and a small wind resistance.

所述陶瓷基附膜发热件一般安装在云母板支架上， 其安装位置在风扇 和出风口之间。  The ceramic base film heating element is generally mounted on a mica board bracket and is mounted between the fan and the air outlet.

同现有技术相比较， 本实用新型的电热风机具有以下有益效果： Compared with the prior art, the electric heating fan of the utility model has the following beneficial effects:

1. 陶瓷基体表面喷涂上电阻浆料后烧结成的面状的发热膜一致 性好， 温度分布均匀， 使用寿命长。 1. The surface of the ceramic substrate is sprayed with a resistive paste and sintered into a planar heat-generating film with good uniformity, uniform temperature distribution and long service life.

2. 直接发热的陶瓷基体能产生较强的具有保健作用的远红外线。 2. The directly heated ceramic matrix can produce strong far infrared rays with health effects.

3.由于风阻小， 通风顺畅， 风扇的转速可以降低， 因此噪音也降低。 3. Due to the small wind resistance and smooth ventilation, the fan speed can be reduced, so the noise is also reduced.

4. 因电热转化效率高， 且风扇功率小， 故节约能耗。 4. Energy saving due to high electrothermal conversion efficiency and low fan power.

5. 使用陶瓷基附膜发热件作为连接在电机控制线路中的降压电阻， 还 具有体积小， 成本低， 装配简单的优点。 附图说明 图 1是现有电吹风机的内部结构示意图； 图 2是现有电吹风机电阻丝常见的几种缠绕形式； 图 3是本实用新型呈圆筒形陶瓷基附膜发热件的结构示意图； 图 4是本实用新型呈方筒形陶瓷基附膜发热件的结构示意图； 图 5是本实用新型呈台锥筒形陶瓷基附膜发热件的结构示意图； 图 6是呈放射状柱形陶瓷基附膜发热件的示意图， 该柱状体的内部为 直孔， 外部为锥型； 图 7是本实用新型的电吹风机的内部结构示意图； 图 8是使用一片串接在电路中的陶瓷基附膜发热件作为风扇直流电机 的降压电阻的原理电路图； 图 9是使用两片并接的陶瓷基附膜发热件作为风扇直流电机的降压电 阻的原理电路图； 5. The ceramic-based film-heating element is used as a step-down resistor connected to the motor control circuit, and has the advantages of small size, low cost, and simple assembly. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the internal structure of a conventional electric hair dryer; FIG. 2 is a common winding form of a conventional electric hair dryer resistance wire; FIG. 3 is a schematic view showing the structure of a cylindrical ceramic base-attached film heating element of the present invention. 4 is a schematic structural view of a square tubular ceramic base film-heating element according to the present invention; FIG. 5 is a schematic structural view of a cone-shaped cylindrical ceramic base film-heating element of the present invention; FIG. 6 is a radial cylindrical ceramic. FIG. 7 is a schematic view showing the internal structure of the electric hair dryer of the present invention; FIG. 8 is a ceramic base attached in a circuit using a piece of the substrate. The circuit diagram of the film heating element as the step-down resistor of the fan DC motor; Figure 9 is a schematic circuit diagram of a step-down resistor using a two-piece parallel ceramic sub-film heat-generating member as a fan DC motor;

图 10是使用圆筒形陶瓷基附膜发热件作为加热器， 片状的陶瓷基附膜 发热件作为风扇电机的降压电阻的电吹风机的内部结构示意图； 图 11是使用圆筒形陶瓷基附膜发热件作为加热器以及风扇电机的降压 电阻的电吹风机的内部结构示意图； 图 12是使用圆筒形陶瓷基附膜发热件作为加热器以及风扇电机的降压 电阻的电吹风机的装配示意图。 具体实施方式 以下结合附图所示来说明实用新型的实施例。 如图 12所示，本实用新型的电热风机包括：带进风口和出风口的机壳 1、 安装在机壳 1内的风扇 2及其驱动电机 3、加热气流的电加热器 4和电源控 制部分， 所述电加热器 4为能发射远红外线的陶瓷基附膜发热件。 电源控 制部分包括与驱动电机 3连接的降压装置， 该降压装置也是使用陶瓷基附 膜发热件作为降压电阻 6。 所述陶瓷基附膜发热件是在陶瓷基体的部分表面附上一层带有电极的 发热膜，陶瓷基体为含有氧化铝的优质陶瓷，其厚度在 0. 5〜3. 0毫米之间； 发热膜是含有锗、 硅硼、 氧化镱、 氧化铡、 氧化铋等多种元素的电阻浆料， 该电阻浆料不含铅、 汞、 镐、 六价铬、 聚醚苯、 酸苯等有害物质， 其热膨 胀系数与陶瓷基体一致， 电阻浆料涂在陶瓷基表面， 再经摄氏 130CTC的高 温烧结形成附着在陶瓷基表面的发热膜； 在陶瓷基体的两端部表面， 还要 喷涂上电极桨料并放入方便电连接的悍线后经高温烧结成为与发热膜牢固 连接的电极， 由此构成陶瓷基附膜发热件， 这是一种新型的电加热器。  Figure 10 is a schematic view showing the internal structure of a hair dryer using a cylindrical ceramic-based film-heating member as a heater, and a sheet-like ceramic-based film-heating member as a step-down resistor of a fan motor; Figure 11 is a cylindrical ceramic base. The internal structure of the electric hair dryer with the film heating element as the step resistor of the heater and the fan motor; Fig. 12 is the assembly of the electric hair dryer using the cylindrical ceramic base film heating element as the heater and the stepping resistor of the fan motor schematic diagram. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the invention will be described with reference to the accompanying drawings. As shown in FIG. 12, the electric heating fan of the present invention comprises: a casing with an air inlet and an air outlet, a fan 2 installed in the casing 1 and its driving motor 3, an electric heater 4 for heating the airflow, and a power supply control. In part, the electric heater 4 is a ceramic base film heating element capable of emitting far infrared rays. The power control section includes a step-down device connected to the drive motor 3, which also uses a ceramic-based film heat-generating member as the step-down resistor 6. 0 毫米之间; between 0. 5〜3. 0毫米之间; The thickness is between 0. 5~3. 0毫米; The heating film is a resistive paste containing various elements such as antimony, silicon boron, antimony oxide, antimony oxide, antimony oxide, etc., and the resistive paste does not contain lead, mercury, antimony, hexavalent chromium, polyether benzene, acid benzene, etc. The thermal expansion coefficient of the substance is the same as that of the ceramic substrate. The resistive paste is coated on the surface of the ceramic substrate, and then sintered at a high temperature of 130 CTC to form a heat-generating film attached to the surface of the ceramic substrate. On both ends of the ceramic substrate, the upper electrode is also sprayed. The slurry is placed in a convenient connection for electrical connection and then sintered at a high temperature to form an electrode firmly connected to the heat-generating film, thereby forming a ceramic-based film-heating member, which is a novel electric heater.

陶瓷基附膜发热件作为降压电阻 6， 其制作工艺的要求比作电加热器 4 要高。 实验表明： 电阻膜中锗、 硅、 硼、 氧化镱、 氧化铡、 氧化铋等元素 的比例及粘结剂的纯度， 各种元素颗粒的大小及其均匀度， 以及喷涂厚度 和喷涂工艺均能影响电阻膜的物理特性， 如果附着在陶瓷基体的电阻膜不 均匀， 则将导致直流电机的转速不断变化， 转速不断变化必然造成较大噪 音而且影响使用寿命。 经过一定的试验， 我们己掌握根据直流马达所需要 的不同功率和电压， 设计出能获得稳定电阻值， 使马达有稳定转速的电阻 膜的喷涂工艺。 The ceramic base film heating element is used as the step-down resistor 6, and the manufacturing process is required to be compared to the electric heater 4 Be high. Experiments show that: the ratio of germanium, silicon, boron, antimony oxide, antimony oxide, antimony oxide and other elements in the resistive film, the purity of the binder, the size and uniformity of various elemental particles, as well as the thickness of the spray and the spraying process. Affecting the physical properties of the resistive film, if the resistive film attached to the ceramic substrate is not uniform, the rotational speed of the DC motor will be constantly changed, and the continuous change of the rotational speed will inevitably cause a large noise and affect the service life. After a certain test, we have mastered the spraying process of the resistive film that can obtain the stable resistance value and make the motor have a stable rotating speed according to the different power and voltage required by the DC motor.

作为电加热器 4 的陶瓷基附膜发热件可以设计成不同的形状结构， 如 圆筒状（图 3)、 方筒状（图 4)、 台锥状（图 5 )或截面呈放射状的柱形（图 6)。 发热膜则是附着在上述筒状陶瓷基的外壁表面。  The ceramic base film heating element as the electric heater 4 can be designed in different shapes, such as a cylindrical shape (Fig. 3), a square tube shape (Fig. 4), a cone shape (Fig. 5), or a column having a radial cross section. Shape (Figure 6). The heat generating film is attached to the outer wall surface of the cylindrical ceramic base.

出于安全的考虑， 电吹风机产品中风扇电机的工作电压不能过高， 其 工作电压一般在 24伏或以下， 而这些直流电机的供电多是由 110V或 220V 的交流电转换而成。 因此可以使用陶瓷基附膜发热件作为风扇电机的降压 电阻 6， 其电路原理如图 8和图 9所示。 图 8中使用了一片串接在电路中的 陶瓷基附膜发热件作为风扇直流电机的降压电阻 6，由四只二极管组成整流 电路， 交流电源经陶瓷基附膜发热件降压， 接入整流电路输入端， 整流后 由输出端向风扇用的直流电机输出直流电。 图 9则是使用两片并接的陶瓷 基附膜发热件作为风扇直流电机的降压电阻 6，其他的连接关系与图 8完全 相同。 陶瓷基附膜发热件还可以作为交流风扇电机的降压电阻 6 (图略）。 陶瓷基附膜发热件在作为降压电阻 6 的同时， 还是电吹风机的辅助电加热 器；由于降压电阻 6是呈片状或其他形状的刚性件，可以设置安装孔（图 7)， 因此装配非常方便。 无论是作为电加热器 4还是作为降压电阻 6，陶瓷基附膜发热件都是通 过云母支架 5安装在机壳内的。 图 7是本实用新型的应用实施例一电吹风 机的结构示意图。 图 7中用圆筒形陶瓷基附膜发热件作为电加热器 4、片状 陶瓷基附膜发热件作为降压电阻 6、它们都被安装在风扇 2和出风口之间云 母支架 5上。 在图 10所示的电吹风机中， 使用圆筒状陶瓷基附膜¾热件作为电吹风 机的电加热器 4，片状的陶瓷基附膜发热件作为风扇 2驱动电机的降压电阻 6， 又起辅助加热器的作用。 在图 11所示的电吹风机中， 使用圆筒状陶瓷基附膜发热件作为电吹风 机的电加热器 4以及风扇 2驱动电机的降压电阻 6 (又是辅助加热器）。 我 们还可以把作为电加热器 4 的陶瓷基附膜发热件的其中部分电阻段的发热 膜用作风扇电机的降压电阻 6， 使电吹风机的结构更简单、 更紧凑。 本实用新型的电热风机的工作原理如下： 在通电状态下， 陶瓷基附膜 发热件 4表面的电阻发热膜先发热， 对陶瓷基体直接加热， 升温后的陶瓷 基体发射远红外线， 对流经其上的空气进行加热， 被加热的气体由安装在 进风口内的风扇 2产生的强迫气流吹出出风口， 由此可以获得较高的电热 转换效率、 远红外线发射效率和较小的风阻。 For safety reasons, the operating voltage of the fan motor in the hair dryer product should not be too high, and its working voltage is generally 24 volts or less. The power supply of these DC motors is mostly converted from 110V or 220V AC. Therefore, a ceramic-based film-heating member can be used as the step-down resistor 6 of the fan motor, and the circuit principle thereof is as shown in Figs. 8 and 9. In Fig. 8, a ceramic base film heating element serially connected in the circuit is used as the step-down resistor 6 of the fan DC motor, and the rectifier circuit is composed of four diodes, and the AC power source is stepped down by the ceramic-based film heating element. The input end of the rectifier circuit, after rectification, outputs DC power from the output terminal to the DC motor for the fan. Fig. 9 shows the use of two parallel ceramic sub-film heat-generating members as the step-down resistor 6 of the fan DC motor. The other connection relationship is exactly the same as that of Fig. 8. The ceramic base film heating element can also be used as the step-down resistor 6 of the AC fan motor (not shown). The ceramic base film heating element is also used as the auxiliary resistor of the electric blower as the step-down resistor 6; since the step-down resistor 6 is a rigid piece in the form of a sheet or other shape, a mounting hole can be provided (Fig. 7), Assembly is very convenient. Whether as the electric heater 4 or as the step-down resistor 6, the ceramic-based film-heating member is mounted in the casing through the mica holder 5. 7 is a schematic structural view of an electric hair dryer according to an application example of the present invention. Figure 7 shows a cylindrical ceramic base film heating element as an electric heater 4, sheet The ceramic base film-heating members are used as the step-down resistors 6, which are both mounted on the mica holder 5 between the fan 2 and the air outlet. In the hair dryer shown in Fig. 10, a cylindrical ceramic base film 3⁄4 hot member is used as the electric heater 4 of the electric blower, and a sheet-like ceramic base film heat generating member is used as the fan 2 to drive the step-down resistor 6 of the motor. It also functions as an auxiliary heater. In the hair dryer shown in Fig. 11, a cylindrical ceramic-based film-heating member is used as the electric heater 4 of the electric blower and the step-down resistor 6 (also an auxiliary heater) for driving the motor. It is also possible to use the heat-generating film of a part of the resistance section of the ceramic-based film-heating element as the electric heater 4 as the step-down resistor 6 of the fan motor, making the structure of the hair dryer simpler and more compact. The working principle of the electric heating fan of the utility model is as follows: In the energized state, the resistance heating film on the surface of the ceramic-based film-heating element 4 first heats up, directly heats the ceramic substrate, and the heated ceramic substrate emits far-infrared rays, flowing over it. The air is heated, and the heated gas is blown out of the air outlet by the forced air flow generated by the fan 2 installed in the air inlet, thereby obtaining high electrothermal conversion efficiency, far infrared ray emission efficiency, and small wind resistance.

Claims

权利要求 Rights request 1. 一种电热风机，包括：带有进风口和出风口的机壳 (1)、安装在机壳 (1)内的风扇（2)及其驱动电机（3)、 加热气流的电加热器 (4)和电源控制部 分，其特征在于：所述电加热器 (4)为能发射远红外线的陶瓷基附膜发热件。 1. An electric heating fan comprising: a casing (1) having an air inlet and an air outlet, a fan (2) installed in the casing (1), a driving motor (3) thereof, and an electric heater for heating the airflow (4) and a power supply control portion, characterized in that the electric heater (4) is a ceramic base film-heating member capable of emitting far infrared rays. 2. 根据权利要求 1所述的电热风机，其特征在于：所述电源控 ί¾部分 包括与驱动电机（3 ) 连接的降压装置， 该降压装置使用陶瓷基附膜发热件 作为降压电阻 (6)。  2. The electric heat blower according to claim 1, wherein the power supply control unit comprises a step-down device connected to the driving motor (3), and the step-down device uses a ceramic-based film heating element as a step-down resistor. (6). 3. 根据权利要求 1或 2所述的电热风机，其特征在于：所述陶瓷基附 膜发热件是在陶瓷基体的部分表面附上一层带有电极的发热膜。  The electric heat blower according to claim 1 or 2, wherein the ceramic-based film heat-generating member is provided with a heat-generating film having electrodes on a part of the surface of the ceramic base. 4. 根据权利要求 3所述的电热风机，其特征在于：所述发热膜是经高 温烧结在陶瓷基体表面上的一层面状的电阻膜。  The electric heat blower according to claim 3, wherein the heat generating film is a layered resistive film which is sintered at a high temperature on the surface of the ceramic substrate. 5. 根据权利要求 3所述的电热风机，其特征在于：所述陶瓷基体为含 有氧化铝的优质陶瓷， 其厚度为 0. 5〜3. 0毫米。  0毫米。 The thickness of 0. 5~3. 0 mm. 6. 根据权利要求 1所述的电热风机， 其特征在于： 作为电加热器 (4) 的陶瓷基附膜发热件的形状结构呈圆筒状， 该发热件是在圆筒状陶瓷基的 管外壁表面附着发热膜。  The electric heat blower according to claim 1, wherein the ceramic base film-heating member as the electric heater (4) has a cylindrical shape, and the heat generating member is a cylindrical ceramic-based tube. A heat generating film is attached to the outer wall surface. 7. 根据权利要求 1所述的电热风机，其特征在于：所述陶瓷基附膜发 热件的截面呈放射状的柱形。  7. The electric heat blower according to claim 1, wherein the ceramic-based film-heating member has a radial cross section. 8. 根据权利要求 1或 2所述的电热风机，其特征在于：所述陶瓷基附 膜发热件安装在云母板支架（5)上， 其位置在风扇（2)和出风口之间。  The electric heat blower according to claim 1 or 2, characterized in that the ceramic-based film heat-generating member is mounted on the mica board support (5) at a position between the fan (2) and the air outlet. 9. 根据权利要求 2所述的电热风机， 其特征在于： 所述降压电阻 (6) 是一片串接在电路中的陶瓷基附膜发热件。 9. The electric heat blower according to claim 2, wherein: said step-down resistor (6) is a ceramic-based film-heating member that is connected in series in the circuit. 10. 根据权利要求 2所述的电热风机，其特征在于：所述降压电阻 (6) 是两片并接的陶瓷基附膜发热件。 10. The electric heat blower according to claim 2, wherein the step-down resistor (6) is a two-piece ceramic-based film-heating member that is connected in parallel.
PCT/CN2005/000698 2005-04-18 2005-05-20 An electric heating blower Ceased WO2006111048A1 (en)

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