CN1952574A - Low no-load-loss medium-frequency coreless induction furnace - Google Patents
Low no-load-loss medium-frequency coreless induction furnace Download PDFInfo
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- CN1952574A CN1952574A CN 200510044998 CN200510044998A CN1952574A CN 1952574 A CN1952574 A CN 1952574A CN 200510044998 CN200510044998 CN 200510044998 CN 200510044998 A CN200510044998 A CN 200510044998A CN 1952574 A CN1952574 A CN 1952574A
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Abstract
The invention relates to a middle-frequency coreless induction furnace with low no-load loss, applied in metallurgical and casting industries, comprising furnace shell, furnace lining in melting room and induction ring. The induction ring is set between furnace lining in melting room and furnace shell and on the outside of induction ring guiding magnetic pillar is set. Two ends of the guiding magnetic pillar are connected with guiding magnetic mask plates at the fire port and the bottom respectively. The guiding magnetic pillar and mask plate are made of soft-magnetic ferrite, or guiding magnetic iron powder or soft-magnetic material with high resistance, which are provided with high guiding-magnetic ratio and low loss under higher-frequency magnetic field, by sintering and bonding. The guiding magnetic pillar is set between furnace shell and induction ring and relative guiding magnetic mask plate is set between the furnace bottom and hole. Alternation magnetic flux through the furnace shell is little so as to decrease the no-load loss of furnace greatly and because the guiding magnetic pillar and mask plate made of soft-magnetic ferrite, or guiding magnetic iron powder or soft-magnetic material with high resistance has little swirl and magnetic hysteresis loss so that no-load loss of furnace is decreased furthermore and electric power usage and furnace efficiency are improved.
Description
Technical field
The present invention relates to a kind of improved intermediate frequency coreless induction furnace, be used for metallurgy, casting industry.
Background technology
In traditional coreless induction furnace structure, the magnetic flux of Medium frequency induction circle is along fusion zone in the stove and outside magnetic circuit of induction coil and electric furnace shell formation closure, the cylindrical of furnace shell, bottom and upper cover plate part produce induced-current because of the alternating flux of passing, though the box hat electric furnace of larger capacity is provided with the outside yoke of the induction coil that is formed by the silicon steel sheet closed assembly, its yoke manufacturing process is very complicated, and the magnetic flux of hundreds of hertz produces eddy current equally on the iron core yoke, because of the eddy current and the magnetic hystersis loss of silicon steel sheet yoke makes that the open circuit loss of electric furnace is bigger, yoke itself also needs water cooling, the bottom of electric furnace shell, the upper cover plate part also produces inductive loop because of no magnetic screen, so the open circuit loss of electric furnace is relatively large, how further reducing the open circuit loss of electric furnace and improve utilization rate of electrical, is a great problem that needs to be resolved hurrily.
Summary of the invention
The object of the present invention is to provide a kind of low open circuit loss intermediate frequency coreless induction furnace, improve electric furnace efficient.
Low open circuit loss intermediate frequency coreless induction furnace of the present invention, comprise furnace shell, melting chamber furnace lining and induction coil, induction coil places between melting chamber furnace lining and the furnace shell, the outside of its induction coil is fitted with the magnetic conduction column, and the upper and lower side of magnetic conduction column connects fire door magnetic conduction barricade and furnace bottom magnetic conduction barricade respectively.
Magnetic conduction column and magnetic conduction barricade are made suitable block parts and are got final product, magnetic conduction column fixed packet is trapped among between induction coil cylindrical and the furnace shell, constitute induction coil external magnetic shield loop, the shielding of fire door magnetic conduction barricade and furnace bottom magnetic conduction barricade in addition, avoid and shield the outer magnetic flux of induction coil through furnace shell, furnace bottom shell and fire door cover plate induction heating, greatly reduce the open circuit loss of electric furnace.
Among the present invention:
The design of the cross section of magnetic conduction column is fan-shaped, and it is inboard corresponding with the induction coil profile, can realize with induction coil near installation.
Fire door magnetic conduction barricade can be whole ring-type in the form of a ring, also can be the assembly unit ring-type, and its aperture and fire door adapt, and be simple in structure, compact.Fire door magnetic conduction barricade can be the individual components of making, also can directly be compounded on the supporting bell, and good integrity, bulk strength is big, and performance is good.
Furnace bottom magnetic conduction barricade can be circular slab, square plate or polygonal panel or the like, comprises single piece and building block etc., suitable getting final product.
Magnetic conduction column wherein and magnetic conduction barricade are by the permeability height, the very low soft magnetic ferrite of loss or magnetic conduction iron powder or high resistive soft magnetic materials sintering, adhering and pressing form in upper frequency magnetic field.Compare with silicon steel sheet, manufacture craft is simple, and the magnetic conduction column of being made by soft magnetic ferrite, magnetic conduction iron powder or high resistive soft magnetic materials and magnetic conduction barricade eddy current and magnetic hystersis loss are very little, and the open circuit loss of electric furnace is obviously reduced.
Other structure, power supply and control section about electric induction furnace have been mature technology, directly use to get final product, and or not creation part of the present invention, repeat no more.
The present invention is provided with the magnetic conduction column between furnace shell and induction coil, and be provided with corresponding magnetic conduction barricade at furnace bottom and fire door, like this, the alternating flux of passing furnace shell seldom, make the open circuit loss of electric furnace obviously reduce, and magnetic conduction column of being made by soft magnetic ferrite, magnetic conduction iron powder or high resistive soft magnetic materials and magnetic conduction barricade eddy current and magnetic hystersis loss are very little, and the open circuit loss of electric furnace is further reduced, and have improved utilization rate of electrical and electric furnace efficient.
Description of drawings
Fig. 1, one embodiment of the invention structural representation.
A-A cross section structure schematic diagram among Fig. 2, Fig. 1.
Fig. 3, fire door magnetic conduction shielding plate structure schematic diagram.
Fig. 4, furnace bottom magnetic conduction shielding plate structure schematic diagram.
Among the figure: 1, fire door shell 2, furnace shell 3, magnetic conduction column 4, furnace bottom shell 5, furnace bottom magnetic conduction barricade 6, induction coil 7, furnace lining 8, melting chamber 9, fire door magnetic conduction barricade.
The specific embodiment
The invention will be further described in conjunction with the foregoing description accompanying drawing.
As shown in the figure, low open circuit loss intermediate frequency coreless induction furnace of the present invention, comprise furnace shell, melting chamber furnace lining 7 and induction coil 6, induction coil 6 places between melting chamber furnace lining 7 and the furnace shell 2, the outside of its induction coil 6 is fitted with magnetic conduction column 3, the upper and lower side of magnetic conduction column 3 connects fire door magnetic conduction barricade 9 and furnace bottom magnetic conduction barricade 5 respectively, and the cross section of magnetic conduction column 3 is fan-shaped, and it is inboard corresponding with induction coil 6 profiles.Fire door magnetic conduction barricade 9 in the form of a ring, its aperture and fire door adapt, furnace bottom magnetic conduction barricade 5 is a circular slab, magnetic conduction column 3 and magnetic conduction barricade 9,5 mainly are that raw material sintering, adhering and pressing form with the soft magnetic ferrite.
Claims (7)
1, a kind of low open circuit loss intermediate frequency coreless induction furnace, comprise furnace shell, melting chamber furnace lining and induction coil, induction coil places between melting chamber furnace lining and the furnace shell, the outside that it is characterized in that induction coil is fitted with the magnetic conduction column, and the upper and lower side of magnetic conduction column connects fire door magnetic conduction barricade and furnace bottom magnetic conduction barricade respectively.
2, low open circuit loss intermediate frequency coreless induction furnace according to claim 1 is characterized in that the cross section of magnetic conduction column is fan-shaped, and it is inboard corresponding with the induction coil profile.
3, low open circuit loss intermediate frequency coreless induction furnace according to claim 1 is characterized in that fire door magnetic conduction barricade in the form of a ring, and its aperture and fire door adapt.
4, low open circuit loss intermediate frequency coreless induction furnace according to claim 1 is characterized in that furnace bottom magnetic conduction barricade is a circular slab.
5, according to claim 1,2,3 or 4 described low open circuit loss intermediate frequency coreless induction furnaces, it is characterized in that magnetic conduction column and magnetic conduction barricade are formed by sintering soft magnetic ferrite, adhering and pressing.
6, according to claim 1,2,3 or 4 described low open circuit loss intermediate frequency coreless induction furnaces, it is characterized in that magnetic conduction column and magnetic conduction barricade are formed by magnetic conduction iron powder sintering, adhering and pressing.
7, according to claim 1,2,3 or 4 described low open circuit loss intermediate frequency coreless induction furnaces, it is characterized in that magnetic conduction column and magnetic conduction barricade are formed by the resistive soft magnetic materials sintering of height, adhering and pressing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044998 CN1952574A (en) | 2005-10-21 | 2005-10-21 | Low no-load-loss medium-frequency coreless induction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044998 CN1952574A (en) | 2005-10-21 | 2005-10-21 | Low no-load-loss medium-frequency coreless induction furnace |
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| Publication Number | Publication Date |
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| CN1952574A true CN1952574A (en) | 2007-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510044998 Pending CN1952574A (en) | 2005-10-21 | 2005-10-21 | Low no-load-loss medium-frequency coreless induction furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338541A (en) * | 2013-06-14 | 2013-10-02 | 中山大学 | Energy-saving magnetic shielding device for induction heating crystal furnace |
| CN105357942A (en) * | 2015-12-10 | 2016-02-24 | 广西玉柴机器股份有限公司 | Shielding device for intermediate frequency furnace bottom |
| CN107990715A (en) * | 2017-12-24 | 2018-05-04 | 襄阳远锐资源工程技术有限公司 | A kind of series resonance intermediate frequency lead melting furnace |
-
2005
- 2005-10-21 CN CN 200510044998 patent/CN1952574A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338541A (en) * | 2013-06-14 | 2013-10-02 | 中山大学 | Energy-saving magnetic shielding device for induction heating crystal furnace |
| CN105357942A (en) * | 2015-12-10 | 2016-02-24 | 广西玉柴机器股份有限公司 | Shielding device for intermediate frequency furnace bottom |
| CN107990715A (en) * | 2017-12-24 | 2018-05-04 | 襄阳远锐资源工程技术有限公司 | A kind of series resonance intermediate frequency lead melting furnace |
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