CN103668452A - Ingot furnace - Google Patents
Ingot furnace Download PDFInfo
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- CN103668452A CN103668452A CN201310722644.7A CN201310722644A CN103668452A CN 103668452 A CN103668452 A CN 103668452A CN 201310722644 A CN201310722644 A CN 201310722644A CN 103668452 A CN103668452 A CN 103668452A
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- crucible
- ingot furnace
- heating unit
- heating
- movable plate
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Abstract
The invention provides an ingot furnace. The ingot furnace comprises a crucible and a heating device, wherein the heating device can be movably arranged relative to the crucible. The technical scheme of the invention can be applied to heat any position of the crucible, so that the bulk temperature of the crucible is evener, the crystallizing interface is flatter, the segregation of impurities is more convenient, and the quality of silicon ingots is greatly improved.
Description
Technical field
The present invention relates to silicon chip of solar cell manufacture field, more specifically, relate to a kind of ingot furnace.
Background technology
In ingot casting process, first silico briquette is put into the crucible of earth silicon material, then put into and take the heating unit that graphite material is resistance, the silico briquette slowly a large amount of shapes being differed is all molten into silicon liquid, by directional freeze, forms a whole silico briquette.Conventional heating device is to be fixed on crucible surrounding, usually, due to heating crucible local location always, causes crucible local temperature too high, causes crucible coating layer to come off, and even because temperature head is too large, causes crucible fracture, and then leaks silicon, causes Explosion of boiler proper.
Development along with ingot casting technology, the capacity of ingot furnace is upgraded to 800kg by 450kg originally, from 800kg, be upgraded to 1200kg again at present, development along with ingot casting technology, specification of quality to ingot casting is more and more higher, traditional fixed type of heating, cannot guarantee the Flatness of current large size silicon ingot growth interface to cause fractional condensation inhomogeneous.
Summary of the invention
The present invention aims to provide a kind of ingot furnace, to improve the quality of ingot casting.
To achieve these goals, the invention provides a kind of ingot furnace, ingot furnace comprises: crucible; Heating unit, heating unit arranges movably with respect to crucible.
Further, heating unit at least vertically arranges movably with respect to crucible.
Further, heating unit comprises: a plurality of heating electrodes; Movable plate, a plurality of heating electrodes are all fixedly connected with movable plate, and movable plate arranges movably with respect to crucible.
Further, a plurality of heating electrodes are along arranging equably with the coaxial circle of crucible.。
Further, heating unit also comprises for driving heating unit with respect to crucible mobile drive unit vertically.
Further, drive unit comprises servomotor.
Further, heating unit also comprises gear unit, and gear unit comprises: leading screw, and leading screw is connected with servo motor transmission; Slide block, slide block is suitable with leading screw and be fixedly connected with movable plate.
Further, heating unit comprises a plurality of servomotors and a plurality of gear units that arrange correspondingly with a plurality of servomotors.
Further, a plurality of gear units are along arranging equably with the coaxial circle of crucible.
Apply technical scheme of the present invention, ingot furnace comprises crucible and heating unit, and heating unit arranges movably with respect to crucible.Apply technical scheme of the present invention, can give crucible any position heating, make crucible bulk temperature more even, the interface of crystallization is more smooth, is more conducive to the fractional condensation of impurity, greatly promotes silicon ingot quality.
Accompanying drawing explanation
The Figure of description that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the ingot furnace of the embodiment of the present invention;
Fig. 2 shows the structural representation of heating unit of the ingot furnace of the embodiment of the present invention.
Reference numeral: 2, heating unit; 21, heating electrode; 22, movable plate; 23, servomotor.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
As illustrated in fig. 1 and 2, the ingot furnace of the present embodiment comprises crucible and heating unit.Heating unit 2 arranges movably with respect to crucible.
The ingot furnace of the present embodiment has been realized the movement of heating unit.Can make crucible bulk temperature more even to crucible any position heating, the interface of crystallization be more smooth, is more conducive to the fractional condensation of impurity, greatly promotes silicon ingot quality, reduces production risk.
Heating unit at least vertically arranges movably with respect to crucible.Have to utilize and control crystal grain along the situation of perpendicular direction growth.
Heating unit comprises a plurality of heating electrodes 21 and movable plate 22.A plurality of heating electrodes are all fixedly connected with movable plate 22, and movable plate arranges movably with respect to crucible.Movable plate 22 vertically in mobile process, drives heating electrode to move with respect to crucible.Realized the removable setting to the heating unit of crucible heating.
A plurality of heating electrodes 21 are along arranging equably with the coaxial circle of crucible.A plurality of heating electrodes for the silicon material in heating crucible arrange vertically equably.Be conducive to improve the homogeneity of the distribution of the temperature of silicon material in crucible.Further, make the interface of silicon material crystallization more smooth, greatly promote silicon ingot quality, reduce production risk.
Heating unit also comprises for driving heating unit 2 with respect to crucible mobile drive unit vertically.Drive unit comprises servomotor 23.
Servomotor can be realized the high precision of speed and displacement is controlled.Be conducive to improve further silicon ingot quality.
Heating unit also comprises gear unit, and gear unit comprises leading screw and slide block.Leading screw and servomotor 23 are in transmission connection.Slide block is suitable with leading screw and be fixedly connected with movable plate 22.
Leading screw vertically arranges, and the rotating drive slide block of leading screw moves along the bearing of trend of leading screw.Leading screw is connected with servo motor transmission.Slide block is fixedly connected with movable plate 22.Control the rotation of servomotor, can realize the control to heating unit.
Heating unit comprises a plurality of servomotors 23 and a plurality of gear units that arrange correspondingly with a plurality of servomotors 23.A plurality of gear units are along arranging equably with the coaxial circle of crucible.Improve the stability that heating unit moves, be conducive to further improve the quality of ingot casting.
These are only the preferred embodiments of the present invention, be not limited to the present invention, 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 (9)
1. an ingot furnace, is characterized in that, described ingot furnace comprises:
Crucible;
Heating unit (2), described heating unit (2) arranges movably with respect to described crucible.
2. ingot furnace according to claim 1, is characterized in that, described heating unit at least vertically arranges movably with respect to described crucible.
3. ingot furnace according to claim 1, is characterized in that, described heating unit comprises:
A plurality of heating electrodes (21);
Movable plate (22), described a plurality of heating electrodes are all fixedly connected with described movable plate (22), and described movable plate arranges movably with respect to described crucible.
4. ingot furnace according to claim 3, is characterized in that, described a plurality of heating electrodes (21) are along arranging equably with the coaxial circle of described crucible.
5. according to the ingot furnace described in claim 3 or 4, it is characterized in that, described heating unit also comprises for driving described heating unit (2) with respect to described crucible mobile drive unit vertically.
6. ingot furnace according to claim 5, is characterized in that, described drive unit comprises servomotor (23).
7. ingot furnace according to claim 6, is characterized in that, described heating unit also comprises gear unit, and described gear unit comprises:
Leading screw, described leading screw and described servomotor (23) are in transmission connection;
Slide block, described slide block is suitable with described leading screw and be fixedly connected with described movable plate (22).
8. ingot furnace according to claim 7, is characterized in that, described heating unit comprises a plurality of described servomotors (23) and a plurality of described gear unit arranging correspondingly with described a plurality of servomotors (23).
9. ingot furnace according to claim 8, is characterized in that, described a plurality of gear units are along arranging equably with the coaxial circle of described crucible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310722644.7A CN103668452A (en) | 2013-12-24 | 2013-12-24 | Ingot furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310722644.7A CN103668452A (en) | 2013-12-24 | 2013-12-24 | Ingot furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103668452A true CN103668452A (en) | 2014-03-26 |
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ID=50307204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310722644.7A Pending CN103668452A (en) | 2013-12-24 | 2013-12-24 | Ingot furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN103668452A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1384538A1 (en) * | 2002-07-25 | 2004-01-28 | Mitsubishi Materials Corporation | Casting apparatus for manufacturing polycrystalline silicon ingots and method therefor |
| CN201133766Y (en) * | 2007-11-30 | 2008-10-15 | 上海普罗新能源有限公司 | Polycrystalline silicon fine ingot furnace adopting gradient temperature reduction |
| CN103409790A (en) * | 2013-08-01 | 2013-11-27 | 安徽大晟新能源设备科技有限公司 | Lower heater lifting mechanism of pseudo-single crystal silicon ingot furnace |
-
2013
- 2013-12-24 CN CN201310722644.7A patent/CN103668452A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1384538A1 (en) * | 2002-07-25 | 2004-01-28 | Mitsubishi Materials Corporation | Casting apparatus for manufacturing polycrystalline silicon ingots and method therefor |
| CN201133766Y (en) * | 2007-11-30 | 2008-10-15 | 上海普罗新能源有限公司 | Polycrystalline silicon fine ingot furnace adopting gradient temperature reduction |
| CN103409790A (en) * | 2013-08-01 | 2013-11-27 | 安徽大晟新能源设备科技有限公司 | Lower heater lifting mechanism of pseudo-single crystal silicon ingot furnace |
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Application publication date: 20140326 |
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| RJ01 | Rejection of invention patent application after publication |