WO2006099802A1 - Procédé de chauffage électrique à puissance étendue reposant sur un dispositif ptc et équipement idoine - Google Patents
Procédé de chauffage électrique à puissance étendue reposant sur un dispositif ptc et équipement idoine Download PDFInfo
- Publication number
- WO2006099802A1 WO2006099802A1 PCT/CN2006/000455 CN2006000455W WO2006099802A1 WO 2006099802 A1 WO2006099802 A1 WO 2006099802A1 CN 2006000455 W CN2006000455 W CN 2006000455W WO 2006099802 A1 WO2006099802 A1 WO 2006099802A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- temperature coefficient
- positive temperature
- coefficient device
- power
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005485 electric heating Methods 0.000 title claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims abstract description 47
- 238000010438 heat treatment Methods 0.000 claims description 52
- 238000005070 sampling Methods 0.000 claims description 9
- 230000003247 decreasing effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- 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
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
Definitions
- PTC materials such as PTC ceramic heating elements
- electric heater products for example, in electric heating products such as electric soldering irons, in which the existing PTC ceramics are used for heating.
- the conventional method of heating and controlling the temperature of the PTC ceramic heating element is to use a constant pressure heating method, that is, to provide
- the technical problem to be solved by the present invention is to provide a power expansion electric heating method and device based on a positive temperature coefficient device, which can overcome the above-mentioned deficiencies of the prior art, and effectively expand the actual power of the PTC ceramic heating element in high temperature use.
- the PTC ceramic heating element is ensured to have sufficient output power without affecting the service life of the PTC ceramic heating element.
- the applying a voltage whose magnitude is proportional to the resistance change of the positive temperature coefficient device on the positive temperature coefficient device includes the following steps: Applying a starting voltage to power up the positive temperature coefficient device; 2) repeatedly performing steps 3) and 4) until the end of heating: 3) detecting the operating current of the positive temperature coefficient device, if the operating current exceeds a predetermined value, Reducing the voltage applied to the positive temperature coefficient device; 4) detecting the positive temperature coefficient device operating current, and increasing the voltage applied to the positive temperature coefficient device if the operating current is less than a predetermined value; wherein the starting The voltage is the operating voltage at which the positive temperature coefficient device operates safely at ambient temperature, and the predetermined value may be the rated operating current of the positive temperature coefficient device or a value associated therewith.
- a power expansion electric heating device based on a positive temperature coefficient device comprising a positive temperature coefficient device 2, a voltage regulator 1 for supplying a driving voltage to the positive temperature coefficient device 2, and a voltage regulator 1 and a positive temperature coefficient device A current sensor 4 between 2, and a sampling amplifying circuit 5 for controlling the voltage regulator 2 according to the current sensor 4, such that when the current sensor 4 detects an operating current greater than a predetermined value, the voltage is reduced by the sampling amplifying circuit 5.
- the output voltage of the regulator 1 detects an operating current smaller than a predetermined value, the output voltage of the voltage regulator 1 is increased by the sampling amplifying circuit 5.
- the invention provides a power expansion electric heating method and device based on a positive temperature coefficient device according to the present invention, which changes the working voltage of the PTC ceramic heating body and limits the maximum operating current of the PTC ceramic heating body at a low temperature compared with the prior art.
- the operating voltage is reduced to limit the maximum input current I to the safe zone.
- the above method and apparatus of the present invention can be applied to an electric heating product such as an electric soldering iron to ensure sufficient power at a high temperature while avoiding overload of the PTC heating element in a non-operating low temperature state.
- FIG. 1 is a schematic view showing the principle of a temperature control device for a PTC ceramic heating element
- FIG. 2 is a schematic view showing a relationship between a temperature and a resistance value of a PTC ceramic heating element
- the output voltage of the voltage regulator 1 may be between 0 and 30 V, and a sampling amplifying circuit 5 is connected between the other terminal of the PTC ceramic heating element 2 and the current sensor 4 connection point and the voltage regulator 1 control terminal.
- the output voltage of the voltage regulator 1 is supplied to the PTC ceramic heating element through the current sensor 4, that is, the output voltage of a certain voltage range is applied to both ends of the PTC ceramic heating body, and the current sensor amplifies the current signal through the sampling amplifying circuit 5 and then feeds back Give the voltage regulator 1, for example, when the current reaches At 4.17A, if the current continues to rise, the voltage regulator begins to regulate the output voltage to maintain the output voltage to 12. At the same time as 5V, the maximum current is limited to 4.17A.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Control Of Resistance Heating (AREA)
Abstract
L’invention concerne un procédé de chauffage électrique à puissance étendue reposant sur un dispositif PTC et un équipement idoine, selon lequel on applique une tension d’exploitation dont la magnitude change en fonction de la résistance dudit radiateur céramique PTC, pour maintenir son courant d’exploitation à un niveau sensiblement constant. Par comparaison avec l’art antérieur, la présente invention fait varier la tension d’exploitation du radiateur céramique PTC en fonction de la variation de résistance de façon à limiter son courant d’exploitation maximal. Par conséquent, lorsque la température de la céramique PTC est faible, sa tension d’exploitation baisse de sorte que son courant d’entrée I soit confiné dans une zone sécurisée. Lorsque la température augmente, sa tension d’exploitation s'élève pour étendre sa puissance, de sorte qu'elle peut non seulement protéger le radiateur céramique PTC à une température plus basse pour rallonger sa durée de vie, mais également ramener plus vite la température à une valeur plus élevée.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100338095A CN100515143C (zh) | 2005-03-23 | 2005-03-23 | 基于正温度系数器件的功率扩展电加热方法及电烙铁 |
| CN200510033809.5 | 2005-03-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006099802A1 true WO2006099802A1 (fr) | 2006-09-28 |
Family
ID=37016053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2006/000455 WO2006099802A1 (fr) | 2005-03-23 | 2006-03-21 | Procédé de chauffage électrique à puissance étendue reposant sur un dispositif ptc et équipement idoine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100515143C (fr) |
| WO (1) | WO2006099802A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367147B (zh) * | 2008-08-20 | 2010-06-16 | 深圳速特精工科技股份有限公司 | 电烙铁及其工作温度的控制方法 |
| CN105357780B (zh) * | 2015-12-17 | 2018-10-26 | 珠海格力电器股份有限公司 | 一种ptc电加热器干烧保护方法和装置以及家用电器 |
| CN108848574A (zh) * | 2018-05-18 | 2018-11-20 | 浙江欧兰顿电器科技有限公司 | 一种ptc发热组件恒定功率的控制方法 |
| CN112721572B (zh) * | 2021-02-08 | 2022-04-26 | 镇江海姆霍兹传热传动系统有限公司 | 电动车辆及其控制系统和电加热设备 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002045985A2 (fr) * | 2000-12-09 | 2002-06-13 | Eichenauer Heizelemente Gmbh & Co. Kg | Procede et dispositif de regulation de la temperature |
| JP2004152627A (ja) * | 2002-10-30 | 2004-05-27 | Nippon Dainatekku Kk | 電流制御方法及びそれを実施するための電流制御装置 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HK1029023A2 (en) * | 2000-07-17 | 2001-03-02 | Rocktronic Ind Ltd | Flashing device and its controlling circuit |
-
2005
- 2005-03-23 CN CNB2005100338095A patent/CN100515143C/zh active Active
-
2006
- 2006-03-21 WO PCT/CN2006/000455 patent/WO2006099802A1/fr not_active Application Discontinuation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002045985A2 (fr) * | 2000-12-09 | 2002-06-13 | Eichenauer Heizelemente Gmbh & Co. Kg | Procede et dispositif de regulation de la temperature |
| JP2004152627A (ja) * | 2002-10-30 | 2004-05-27 | Nippon Dainatekku Kk | 電流制御方法及びそれを実施するための電流制御装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1838840A (zh) | 2006-09-27 |
| CN100515143C (zh) | 2009-07-15 |
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