CN103747543A - Electric heater - Google Patents
Electric heater Download PDFInfo
- Publication number
- CN103747543A CN103747543A CN201410024497.0A CN201410024497A CN103747543A CN 103747543 A CN103747543 A CN 103747543A CN 201410024497 A CN201410024497 A CN 201410024497A CN 103747543 A CN103747543 A CN 103747543A
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- CN
- China
- Prior art keywords
- heating wire
- electric heater
- electric heating
- electric
- boron nitride
- 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.)
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Abstract
The invention relates to the technical field of electric heating, in particular to an electric heater. The electric heater comprises a tube body 1, an electric heating wire 2 arranged in the tube body, and an electric heating leading rod 3 which is connected with the two ends of the electric heating wire and extends out of the tube body, wherein a mixture 4 consisting of magnesium oxide powder and boron nitride powder is injected between the electric heating wire 2 and the tube body. The electric heater is used for electric heating, and the temperature difference between the electric heating wire and the tube wall of the electric heater can be effectively reduced, so that the electric heating wire is not easy to fuse; therefore, the service life of the electric heater is prolonged.
Description
Technical field
The present invention relates to electric-heating technology field, especially a kind of electric heater.
Background technology
Magnesia powder is owing to having higher dielectric strength and good heat conductivility, and it is widely used the packing material in electric heating tube inside.But still very large as the heating wire of the electric heater of packing material and the temperature difference of tube wall by magnesia powder, cause the easy fusing of heating wire, affect the useful life of electric heater.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of electric heater, and this electric heater has long feature of life-span.
In order to solve the problems of the technologies described above, the present invention includes body, be arranged on the heating wire in body, and be connected with heating wire two ends and the electric heating that stretches out body draws rod, between described heating wire and body, be filled with the mixture being formed by magnesia powder and boron nitride powder.
Preferably, the mass percent of described magnesia powder and boron nitride powder is 80:20.
The present invention has added boron nitride powder in magnesia powder, makes the thermal conductivity of packing material better, can effectively reduce the temperature difference of heating wire and electric heater tube wall, makes heating wire be not easy fusing, and then improves the useful life of electric heater.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, the present invention includes body 1, heating wire 2 in body is set, and be connected with heating wire two ends and the electric heating that stretches out body draws rod 3, between described heating wire 2 and body 1, be filled with the mixture 4 being comprised of magnesia powder and boron nitride powder, in described mixture 4, the mass percent of magnesia powder and boron nitride powder is 80:20.
In the mixture 4 that the present invention uses, the conductive coefficient of boron nitride powder is 8 times of magnesia powder, and conductive coefficient reaches 125 hr-ft
2-F, and the conductive coefficient of magnesia powder only has 14.4hr-ft
2-F.Because boron nitride powder cost is higher, and the boron nitride order number on market is large, and particle is less, be difficult to fill, so the present invention still to adopt the magnesia powder that particle is larger be basis, filling part boron nitride powder between magnesia powder.After tested, the electrothermal tube of identical power, the temperature that magnesia powder mixes with boron nitride powder after the inner silk of electrothermal tube surface temperature after filling is filled than pure zirconia magnesium powder reduces by 35 ℃, therefore adopts and has obtained significantly raising in useful life of the electrothermal tube of magnesia powder and the mixed packing material of boron nitride powder.
Claims (2)
1. electric heater, comprise body (1), heating wire (2) in body is set, and be connected with heating wire two ends and the electric heating that stretches out body draws rod (3), it is characterized in that, between described heating wire (2) and body (1), be filled with the mixture (4) being formed by magnesia powder and boron nitride powder.
2. electric heater according to claim 1, is characterized in that, in described mixture (4), the mass percent of magnesia powder and boron nitride powder is 80:20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410024497.0A CN103747543A (en) | 2014-01-20 | 2014-01-20 | Electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410024497.0A CN103747543A (en) | 2014-01-20 | 2014-01-20 | Electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103747543A true CN103747543A (en) | 2014-04-23 |
Family
ID=50504515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410024497.0A Pending CN103747543A (en) | 2014-01-20 | 2014-01-20 | Electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103747543A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106231706A (en) * | 2016-09-05 | 2016-12-14 | 无锡富而凯奥克电气有限公司 | The single-ended electrical heating elements of double-layer insulating structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4280046A (en) * | 1978-12-01 | 1981-07-21 | Tokyo Shibaura Denki Kabushiki Kaisha | Sheath heater |
| CN1571587A (en) * | 2003-07-25 | 2005-01-26 | 王文超 | High temperature electrothermal pipe |
| JP2005086117A (en) * | 2003-09-11 | 2005-03-31 | National Institute Of Advanced Industrial & Technology | Cleaning super-high temperature heater for substrate heating |
| CN101854750A (en) * | 2010-04-11 | 2010-10-06 | 青岛易特优电子有限公司 | Electric heating tube made of hexagonal boron nitride and mixed heat conducting material thereof |
| CN203015152U (en) * | 2012-11-21 | 2013-06-19 | 盐城朗润环保科技有限公司 | Electric heater unit |
-
2014
- 2014-01-20 CN CN201410024497.0A patent/CN103747543A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4280046A (en) * | 1978-12-01 | 1981-07-21 | Tokyo Shibaura Denki Kabushiki Kaisha | Sheath heater |
| CN1571587A (en) * | 2003-07-25 | 2005-01-26 | 王文超 | High temperature electrothermal pipe |
| JP2005086117A (en) * | 2003-09-11 | 2005-03-31 | National Institute Of Advanced Industrial & Technology | Cleaning super-high temperature heater for substrate heating |
| CN101854750A (en) * | 2010-04-11 | 2010-10-06 | 青岛易特优电子有限公司 | Electric heating tube made of hexagonal boron nitride and mixed heat conducting material thereof |
| CN203015152U (en) * | 2012-11-21 | 2013-06-19 | 盐城朗润环保科技有限公司 | Electric heater unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106231706A (en) * | 2016-09-05 | 2016-12-14 | 无锡富而凯奥克电气有限公司 | The single-ended electrical heating elements of double-layer insulating structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140423 |