CN202755096U - Heat insulation device for ingot furnace - Google Patents
Heat insulation device for ingot furnace Download PDFInfo
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- CN202755096U CN202755096U CN 201220103692 CN201220103692U CN202755096U CN 202755096 U CN202755096 U CN 202755096U CN 201220103692 CN201220103692 CN 201220103692 CN 201220103692 U CN201220103692 U CN 201220103692U CN 202755096 U CN202755096 U CN 202755096U
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- heat
- proof device
- heat insulation
- lagging material
- insulation cage
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Abstract
The utility model discloses a novel heat insulation device for an ingot furnace. The novel heat insulation device comprises a top heat insulation plate (4), a side heat insulation cage (2), a lower heat insulation plate (9) and a heat exchange block (10), wherein the side heat insulation cage (2) is connected on an upper furnace body (1) by a lifting connection rod (3), and the lower heat insulation plate (9) is fixed onto a lower furnace body by a support column (8). The novel heat insulation device is characterized in that the side surface and/or the bottom edge area of the heat exchange block (10) are covered by heat insulation materials (11). The novel heat insulation device solves the problem that a solid-liquid interface is W-shaped when an existing ingot furnace is at an earlier stage in nucleation, and high-quality cast mono-crystalline silicon is produced in the ingot furnace by other means.
Description
Technical field
The utility model belongs to heat-proof device structure design and the manufacturing technology field of ingot furnace, is specifically related to a kind of novel ingot furnace heat-proof device.
Background technology
At present, the solar cell with the preparation of the silicon chip of casting production accounts for the over half of global solar battery production.The cost of the silicon chip that casting is produced is low, and is with short production cycle large with output.In the ingot casting process, primary polysilicon is first all fusing at high temperature, and then again to form nucleus growth be polycrystal silicon ingot, through obtaining the silicon chip of final used for solar batteries after the evolution section.But the ingot furnace that uses now is in the mid-early stage of long brilliant process, and solid-liquid interface is W type interface, with the long brilliant convex interface that relatively is fit to of generally acknowledging now certain difference is arranged, and is unfavorable for like this eliminating of the impurity in the silicon ingot.The maximization of crystal region when W type interface also is unfavorable for using the casting growing single-crystal silicon simultaneously.
The utility model content
The utility model improves heat-proof device for the problems referred to above, and a kind of novel ingot furnace heat-proof device is provided, and these improvement can improve the temperature distribution in the ingot furnace, adjusts solid-liquid interface shape.
The utility model addresses the above problem by following technical proposal: a kind of ingot furnace heat-proof device is provided, comprise the top thermal baffle, be fixed on side heat-insulation cage on the upper furnace body by promoting connecting rod, and be fixed in lower thermal baffle and heat exchange mass on the lower furnace body by pillar, it is characterized in that: the side of heat exchange mass and/or bottom margin zone have lagging material to cover.
The utility model ingot furnace is with in the heat-proof device, and side heat-insulation cage bottom is arranged to outwards outstanding, in the situation that there is annular lagging material in heat exchange mass, can make things convenient for the lifting of side heat-insulation cage like this, guarantees simultaneously the effect of heat insulation of heat-proof device.
According to a kind of preferred implementation of the present utility model, the side that the lagging material on the heat exchange mass can a cover heating swap block also can a cover heating swap block bottom margin subregion, also the side of cover heating swap block and base section zone simultaneously.According to a kind of more preferably embodiment of the present utility model, described lagging material is side and the base section zone of cover heating swap block simultaneously.Preferably when the bottom margin of described lagging material (a 11) cover heating swap block, cover width is less than 10% of heat exchange mass length, and the length of lagging material is identical with the length of heat exchange mass.When heat insulating strip simultaneously when the side of cover heating swap block and base section zone, it is shaped as annular.
According to a kind of preferred implementation of the present utility model, there is gap (namely not contacting) between described lagging material and the side heat-insulation cage, the gap minimum value that exists between described lagging material and the side heat-insulation cage is not less than 0.5cm, and maximum value is less than the distance between side heat-insulation cage (2) inboard and the heat exchange mass (10).
According to a kind of preferred implementation of the present utility model, in above-mentioned heat-proof device, the side heat-insulation cage is comprised of the carbon felt of passive steelframe and an insulation effect, and employed lagging material is comprised of the carbon felt that plays insulation effect on the heat exchange mass.
In the utility model, the side of heat exchange mass has added lagging material, and the gap between lagging material and the side heat-insulation cage is less, thereby hot chamber is divided into up and down two portions, and two chambers are two relatively independent parts up and down.Because the blocking effect of employed lagging material on the heat exchange mass, the heat that upper chamber's well heater produces can't direct radiation to lower chambers, reduced the calorific loss in the melting process.Because hot chamber is divided into up and down two portions, when the side heat-insulation cage is opened, upper part space relative closure in the hot chamber, (well heater comprises top heater and sidepiece well heater to the side well heater, two portions well heater all is installed on the thermal baffle of top by arm) heat loss seldom, heat mainly is to scatter and disappear by the heat exchange mass middle portion, thereby the lip temperature of melted silicon is high, medium temperature is low, thus the brilliant speed of the length at center will faster than around, be protruding interface thereby make the solid-liquid interface in the long brilliant process, be conducive to the eliminating of impurity, particularly when utilizing the casting growing single-crystal, can obviously reduce the polysilicon region at edge, increase the ratio of monocrystalline.
Description of drawings
Fig. 1 is heat-proof device structural representation of the present utility model, and wherein lagging material is installed in the side of cover heating swap block and base section zone simultaneously;
Fig. 2 is the utility model is only installed lagging material in the heat exchange mass side schematic diagram;
Fig. 3 is the utility model is only installed lagging material in heat exchange mass bottom surface portions zone schematic diagram;
Being labeled as among the figure: 1 is upper furnace body, and 2 is the side heat-insulation cage, and 3 for promoting connecting rod, and 4 is the top thermal baffle, and 5 is well heater, 6 is electrode, and 7 is lower furnace body, and 8 is the graphite pillar, and 9 is lower thermal baffle, 10 is heat exchange mass, 11,11 ' and 11 " and be lagging material, 12 is crucible guard boards, 13 is crucible.
Embodiment
Below be embodiment of the present utility model, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.
Ingot furnace referring to shown in the accompanying drawing 1 comprises upper furnace body 1, and side heat-insulation cage 2 promotes connecting rod 3, top thermal baffle 4, well heater 5, electrode 6, lower furnace body 7, graphite pillar 8, lower thermal baffle 9, heat exchange mass 10, lagging material 11, crucible guard boards 12, crucible 13.Wherein side heat-insulation cage 3 bottoms are arranged to outwards outstanding.Side heat-insulation cage 2 is by promoting connecting rod 3 control liftings.Top thermal baffle 4 and well heater 5 are suspended on the upper furnace body 1 by electrode 6 and maintain static.In lower furnace body 7, support lower thermal baffle 9 and heat exchange mass 10 by graphite pillar 8.The side of heat exchange mass 10 and base section zone are fixed with lagging material 11.The gap that has 1cm between the outer side of lagging material 11 and the side heat-insulation cage inwall, and the outer side of lagging material is than the more close side heat-insulation cage in the outside of side well heater.
Referring to the ingot furnace shown in the accompanying drawing 2, it is the fixing lagging material 11 ' in the side of heat exchange mass 10 only, the gap that has 0.5cm between the outer side of lagging material 11 ' and the side heat-insulation cage inwall, and the outer side of lagging material is than the more close side heat-insulation cage in the outside of side well heater.Other are identical with ingot furnace shown in Figure 1.
Referring to the ingot furnace shown in the accompanying drawing 3, it is the fixing lagging material 11 in the outside around the bottom of heat exchange mass 10 only "; lagging material 11 " outer side and side heat-insulation cage inwall between have the gap of 0.5cm, and the outer side of lagging material is than the more close side heat-insulation cage in the outside of side well heater.Other are identical with ingot furnace shown in Figure 1.
Adopt the heat-proof device in the utility model, when long crystalline substance, the corner is incubated, thereby corner dispersed heat when slowing down long crystalline substance, improve temperature gradient distribution in the ingot furnace, even up long crystal boundary line and obtain more vertical thermograde, shorten long brilliant the end and the long brilliant used lag time that finishes in corner in silicon crystal center, can improve the crystal orientation simultaneously, reduce energy consumption.
Claims (10)
1. ingot furnace heat-proof device, comprise top thermal baffle (4), be connected to side heat-insulation cage (2) on the upper furnace body (1) by promoting connecting rod (3), and be fixed in lower thermal baffle (9) and heat exchange mass (10) on the lower furnace body (7) by pillar (8), it is characterized in that: the side of heat exchange mass (10) and/or bottom margin zone are covered by lagging material (11).
2. heat-proof device according to claim 1 is characterized in that: the lower end of described side heat-insulation cage (2) is arranged to outwards outstanding.
3. heat-proof device according to claim 1 is characterized in that: the side of described lagging material (11) while cover heating swap block and bottom margin zone.
4. heat-proof device according to claim 1 is characterized in that: the side of described lagging material (a 11) cover heating swap block or bottom margin zone.
5. heat-proof device according to claim 1 is characterized in that: when the bottom margin of described lagging material (a 11) cover heating swap block, cover width is less than 10% of heat exchange mass length.
6. heat-proof device according to claim 1 is characterized in that: described lagging material (11) is for forming ring-type round heat exchange mass (10).
7. heat-proof device according to claim 1 is characterized in that: have the gap between described lagging material (11) and the side heat-insulation cage (2).
8. heat-proof device according to claim 7, it is characterized in that: the gap minimum value that exists between described lagging material (11) and the side heat-insulation cage (2) is not less than 0.5cm, and maximum value is less than the distance between side heat-insulation cage (2) inboard and the heat exchange mass (10).
9. heat-proof device according to claim 1 is characterized in that: described side heat-insulation cage is comprised of passive steelframe and the carbon felt that plays insulation effect.
10. heat-proof device according to claim 1 is characterized in that: described lagging material is comprised of the carbon felt that plays insulation effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220103692 CN202755096U (en) | 2012-03-19 | 2012-03-19 | Heat insulation device for ingot furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220103692 CN202755096U (en) | 2012-03-19 | 2012-03-19 | Heat insulation device for ingot furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202755096U true CN202755096U (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220103692 Expired - Lifetime CN202755096U (en) | 2012-03-19 | 2012-03-19 | Heat insulation device for ingot furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN202755096U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313688A (en) * | 2014-09-16 | 2015-01-28 | 上饶光电高科技有限公司 | Method for adjusting crystalline silica growth solid-liquid interface |
| CN104372403A (en) * | 2014-11-11 | 2015-02-25 | 华中科技大学 | Heat insulation block for polysilicon ingot casting furnace and polysilicon ingot casting furnace comprising heat insulation block |
| CN105926036A (en) * | 2016-05-24 | 2016-09-07 | 山东省科学院能源研究所 | Polycrystalline silicon crystal growing furnace growth device and heat source adjusting method thereof |
-
2012
- 2012-03-19 CN CN 201220103692 patent/CN202755096U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313688A (en) * | 2014-09-16 | 2015-01-28 | 上饶光电高科技有限公司 | Method for adjusting crystalline silica growth solid-liquid interface |
| CN104372403A (en) * | 2014-11-11 | 2015-02-25 | 华中科技大学 | Heat insulation block for polysilicon ingot casting furnace and polysilicon ingot casting furnace comprising heat insulation block |
| CN104372403B (en) * | 2014-11-11 | 2017-04-12 | 华中科技大学 | Heat insulation block for polysilicon ingot casting furnace and polysilicon ingot casting furnace comprising heat insulation block |
| CN105926036A (en) * | 2016-05-24 | 2016-09-07 | 山东省科学院能源研究所 | Polycrystalline silicon crystal growing furnace growth device and heat source adjusting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |
|
| CX01 | Expiry of patent term |