CN103139948A - Electrothermal furnace wire and electric heating device provided with the same - Google Patents
Electrothermal furnace wire and electric heating device provided with the same Download PDFInfo
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- CN103139948A CN103139948A CN2011103865739A CN201110386573A CN103139948A CN 103139948 A CN103139948 A CN 103139948A CN 2011103865739 A CN2011103865739 A CN 2011103865739A CN 201110386573 A CN201110386573 A CN 201110386573A CN 103139948 A CN103139948 A CN 103139948A
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Abstract
The invention provides an electrothermal furnace wire which is a three-layer coaxial furnace wire (1) formed by an inner layer (4), a middle layer (3) and an outer layer (2), wherein the middle layer (3) is an insulation layer, one of the inner layer (4) and the outer layer (2) is a conducting layer, and the other of the inner layer (4) and the outer layer (2) is an electric heating layer. At one end (D) of the coaxial furnace wire (1), the outer layer directly wraps the inner layer (4) and is electrically connected with the inner layer (4). At the rest part including the other end (C) of the coaxial furnace wire (1), the inner layer (4) is isolated from the outer layer (2) through the middle layer (3). The invention further provides an electric hearing device which is provided with an electric heating component producing a zero magnetic field to the exterior when electricity is charged, and the electric hearing component is the electrothermal furnace wire. The electrothermal furnace wire cannot produce electromagnetic radiation and an electromagnetic field at the same time when the electrothermal furnace wire is powered on and heats.
Description
Technical field
The electric heater unit that the present invention relates to a kind of electrothermal furnace silk and have this electrothermal furnace silk.
Background technology
The equipment general designation electric heater that electricity consumption is heated is as electric rice cooker, electric heater, hair dryer, roaster etc.Although various electric heater structures are different with purposes, chief component is heater.Heating wire is purposes heater extremely widely, is primarily characterized in that resistivity is large, and is high temperature resistant, is generally with compositions such as nickel chromium triangle, Aludiromes.Traditional heating wire is in the process of energising heat production, because of galvanomagnetic effect externally generate electromagnetic waves radiation and magnetic field, its amount of radiation and magnetic field intensity and size of current positive correlation.There are some researches show, electromagnetic radiation has in various degree damage to central nervous system, immune system, cardiovascular system, vision system and the reproductive system of human body; It goes back the Endocrine system, the sense of hearing, and metabolism, the form of histoorgan changes, and all can produce harmful effect.In addition, found also in recent years that electromagnetic field was easily carcinogenic.
On the other hand, in actual applications, the electromagnetic radiation that the electric heating quasi-instrument produces and magnetic field exert an influence to desired magnetic field environment (than low, nearly null field).For example, hot demagnetization kiln has purposes very widely in the field relevant with magnetisable material such as physics, chemistry, materialogy, geophysics, its principle is to utilize heating-up temperature to raise to destroy magnetic domain ordered arrangement in magnetisable material, makes macroscopic view upward offset whole magnetic, reaches demagnetization effectiveness.A key takeaway of heat demagnetization is that magnetisable material need to heat in non-magnetic environment, otherwise can make on the contrary material obtain thermoremanent magnetism and material is magnetized.In addition, in the preparation process of chemical material sample, often utilize the sintering furnace heating to generate specific material.Much studies show that, in material heating preparation process, generation clearly the impacts such as crystal size shape of the effect meeting in magnetic field on material causes on physical property variant.
Hot demagnetization kiln or material sintering furnace device are all to utilize heating wire that magnetisable material material or sample are heated, and then cut off electric current coolant or sample in nearly zero magnetic field, reach demagnetization effectiveness.Although various hot demagnetization kilns or sintering furnace can provide nearly zero magnetic field environment, during heating wire energising heating, because the influence of peak current can produce magnetic field, thus the zero magnetic environment in the destruction demagnetization kiln.
Summary of the invention
For the problem that exists in correlation technique, the object of the present invention is to provide a kind of electrothermal furnace silk, and the electric heater unit with this electrothermal furnace silk, so that the electrothermal furnace silk does not externally produce secondary electromagnetic radiation and electromagnetic field in heating power.
For achieving the above object, the invention provides a kind of electrothermal furnace silk, the electrothermal furnace silk is by internal layer, intermediate layer and outer three layers of coaxial stove silk that form, the intermediate layer is insulating barrier, in internal layer and skin one be conductive layer another be electrothermal layer, at an end of coaxial stove silk, outer directly wrapping inner layer and forming with it is electrically connected to, at the remainder that comprises the other end of coaxial stove silk, internal layer and skin are kept apart by the intermediate layer.
Preferably, internal layer is conductive layer, and skin is electrothermal layer.
Preferably, internal layer is electrothermal layer, and skin is conductive layer.
Preferably, conductive layer is the coat that is formed by conductive silver paste.
Preferably, electrothermal layer is made by heating wire, and insulating barrier is made by the heat conductive insulating pottery.
The present invention also provides a kind of electric heater unit on the other hand, externally produces the electric heating element in zero magnetic field when having energising, and electric heating element is aforementioned arbitrary electrothermal furnace silk.
Preferably, electric heater unit can be used for nonmagnetic unit furnace.
Useful technique effect of the present invention is:
(1) due to, the outer directly wrapping inner layer and form with internal layer and is electrically connected to internal layer and skin is kept apart by the intermediate layer at an end place of electrothermal furnace silk, remainder at the electrothermal furnace silk comprises the outer directly wrapping inner layer in other end place and is electrically connected to internal layer formation, therefore, in when to electrothermal furnace silk energising heating, extrinsic current is coaxial oppositely, in the electrothermal furnace silk, equivalent current is zero, thereby the electrothermal furnace silk does not externally produce secondary electromagnetic radiation and electromagnetic field in heating process;
(2) to make in heating process equivalent current be zero to electrothermal furnace silk of the present invention, therefore stoped the generation of electromagnetic radiation, makes the electric conversion rate of electrothermal furnace silk improve, and saves energy;
(3) internal layer of electrothermal furnace silk of the present invention, intermediate layer and outer field material are nonmagnetic material, without remanent magnetization;
(4) intensity of electrothermal furnace silk of the present invention is high, and in the heating and cooling process, the harmomegathus phenomenon is not obvious, can make this electrothermal furnace silk basic shape invariance that keeps in heating process, to avoid not wishing phenomenon because of what deformation caused;
(5) resistivity of electrothermal furnace silk of the present invention is high, and the efficiency of heating surface is high, successful;
(6) the intermediate layer insulativity of electrothermal furnace silk of the present invention is very high, can resist and wear voltage greater than 500 volts.
Description of drawings
Fig. 1 is the axial cutaway view of electrothermal furnace silk of the present invention.
Fig. 2 is the radial cross-section along Fig. 1 center line I-I.
Embodiment
Describe the specific embodiment of the present invention below in conjunction with accompanying drawing.
Particularly, referring to Fig. 1-2, electrothermal furnace silk of the present invention is three layers of coaxial stove silk 1, internal layer 4, intermediate layer 3 and outer 2 by from inside to outside coaxial setting successively form, wherein intermediate layer 3 is insulating barrier, one in internal layer 4 and outer 2 is conductive layer, and another in internal layer 4 and outer 2 is electrothermal layer.As shown in Figure 1, at an end D place of coaxial stove silk 1, outer 2 direct wrapping inner layer 4 also are electrically connected to internal layer 4 formation; At the other end C of coaxial stove silk 1 and whole stove silk body place, namely at the remainder that comprises other end C of coaxial stove silk 1 (that is, the part between C end and C end and D end), internal layer 4 and skin 2 are kept apart by intermediate layer 3.So, when at the other end C place of coaxial stove silk 1 during to electrothermal furnace silk energising heating, interior extrinsic current is coaxial oppositely, the electrical equivalent electric current is zero, thereby the electrothermal furnace silk does not externally produce secondary electromagnetic radiation and electromagnetic field in heating process, what obviously, electrothermal furnace silk of the present invention produced in heating process is zero magnetic environment.
In an embodiment of electrothermal furnace silk of the present invention: internal layer 4 is made as conductive layer; To be made as by the heat conductive insulating pottery and make as the intermediate layer 3 of insulating barrier, heat conductive insulating ceramic high-temperature resistant, mechanical strength are high; Skin 2 is made as electrothermal layer, and electrothermal layer is made by heating wire, and preferably heating wire is made by nichrome nonmagnetic, that non-oxidizability is strong, intensity is high.
In another embodiment of electrothermal furnace silk of the present invention, internal layer 4 is made as electrothermal layer; Skin 2 is made as conductive layer.In this embodiment: electrothermal layer is heating wire, and preferably heating wire is made by nichrome nonmagnetic, that strong according to oxidizability, intensity is high; Intermediate layer 3 is made by the heat conductive insulating ceramic material high temperature resistant, that mechanical strength is high, and is wrapped on the periphery wall of nichrome wire; As the skin 2 of conductive layer, be the coat that is formed by conductive silver paste, conductive silver paste is high temperature resistant, electromagnetic shielding effect is good, strong adhesion, resistance to wear and filming performance good.In more detail, can find out in conjunction with Fig. 1, conductive silver paste is coated on the periphery wall in intermediate layer 3, and at the D of electrothermal furnace silk end place, conductive silver paste also is coated on the internal layer 4 that stretches out from intermediate layer 3, to make conductive silver paste directly be electrically connected to internal layer 4 at the D of electrothermal furnace silk end place.
On the other hand, the present invention also provides a kind of electric heater unit, externally produces the electric heating element in zero magnetic field when having energising, and wherein said electric heating element is the aforementioned arbitrary electrothermal furnace silk of the present invention.Further, electric heater unit of the present invention can be hot demagnetization kiln, and obviously, the electrothermal furnace silk can also be used to make the high-temperature heating equipment in the external electromagnetic-radiation-free of various requirement and magnetic field.
To sum up, electrothermal furnace silk of the present invention is in heating process, and the equivalent current in the electrothermal furnace silk is zero, does not therefore externally produce secondary electromagnetic radiation and electromagnetic field; Owing to not producing electromagnetic radiation, so the electric conversion rate of electrothermal furnace silk improves, and saves energy; The internal layer of electrothermal furnace silk of the present invention, intermediate layer and outer field material are nonmagnetic material, without remanent magnetization; The intensity of electrothermal furnace silk of the present invention is high, and in the heating and cooling process, the harmomegathus phenomenon is not obvious, can make this electrothermal furnace silk basic shape invariance that keeps in heating process; The resistivity of electrothermal furnace silk of the present invention is high, and the efficiency of heating surface is high, successful; The intermediate layer insulativity of electrothermal furnace silk of the present invention is very high, can resist and wear voltage greater than 500 volts.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. an electrothermal furnace silk, is characterized in that,
Described electrothermal furnace silk is the three layers of coaxial stove silk (1) that formed by internal layer (4), intermediate layer (3) and outer (2), described intermediate layer (3) is insulating barrier, in described internal layer (4) and outer (2) one be conductive layer another be electrothermal layer
Wherein, an end (D) at described coaxial stove silk (1), described skin (2) directly wraps up described internal layer (4) and forms with it and is electrically connected to, at the remainder that comprises the other end (C) of described coaxial stove silk (1), described internal layer (4) and outer (2) are kept apart by described intermediate layer (3).
2. electrothermal furnace silk according to claim 1, is characterized in that,
Described internal layer (4) is conductive layer, and described skin (2) is electrothermal layer.
3. electrothermal furnace silk according to claim 1, is characterized in that,
Described internal layer (4) is electrothermal layer, and described skin (2) is conductive layer.
4. electrothermal furnace silk according to claim 3, is characterized in that,
Described conductive layer is the coat that is formed by conductive silver paste.
5. the described electrothermal furnace silk of any one according to claim 1-4, is characterized in that,
Described electrothermal layer is made by heating wire, and described insulating barrier is made by the heat conductive insulating pottery.
6. an electric heater unit, is characterized in that, externally produces the electric heating element in zero magnetic field when having energising, and described electric heating element is the described electrothermal furnace silk of aforementioned arbitrary claim.
7. electric heater unit according to claim 6, is characterized in that, described electric heater unit can be used for nonmagnetic unit furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110386573.9A CN103139948B (en) | 2011-11-29 | 2011-11-29 | Electrothermal furnace silk and there is the electric heater unit of this electrothermal furnace silk |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110386573.9A CN103139948B (en) | 2011-11-29 | 2011-11-29 | Electrothermal furnace silk and there is the electric heater unit of this electrothermal furnace silk |
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| Publication Number | Publication Date |
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| CN103139948A true CN103139948A (en) | 2013-06-05 |
| CN103139948B CN103139948B (en) | 2015-09-09 |
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| CN201110386573.9A Active CN103139948B (en) | 2011-11-29 | 2011-11-29 | Electrothermal furnace silk and there is the electric heater unit of this electrothermal furnace silk |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5426279A (en) * | 1993-06-21 | 1995-06-20 | Dasgupta; Sankar | Heating rate regulator |
| CN2324746Y (en) * | 1998-01-25 | 1999-06-16 | 雷彼得 | Whole-ceramic electric heating plug for diesel engine |
| CN1947461A (en) * | 2003-11-25 | 2007-04-11 | 京瓷株式会社 | Ceramic heater and manufacturing method of same |
| CN202374478U (en) * | 2011-11-29 | 2012-08-08 | 中国科学院地质与地球物理研究所 | Electrothermal furnace wire and electric heating device provided with electrothermal furnace wire |
-
2011
- 2011-11-29 CN CN201110386573.9A patent/CN103139948B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5426279A (en) * | 1993-06-21 | 1995-06-20 | Dasgupta; Sankar | Heating rate regulator |
| CN2324746Y (en) * | 1998-01-25 | 1999-06-16 | 雷彼得 | Whole-ceramic electric heating plug for diesel engine |
| CN1947461A (en) * | 2003-11-25 | 2007-04-11 | 京瓷株式会社 | Ceramic heater and manufacturing method of same |
| CN202374478U (en) * | 2011-11-29 | 2012-08-08 | 中国科学院地质与地球物理研究所 | Electrothermal furnace wire and electric heating device provided with electrothermal furnace wire |
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| CN103139948B (en) | 2015-09-09 |
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