CN215251332U - Crucible heat-insulating device suitable for polycrystalline silicon ingot casting - Google Patents
Crucible heat-insulating device suitable for polycrystalline silicon ingot casting Download PDFInfo
- Publication number
- CN215251332U CN215251332U CN202121689049.4U CN202121689049U CN215251332U CN 215251332 U CN215251332 U CN 215251332U CN 202121689049 U CN202121689049 U CN 202121689049U CN 215251332 U CN215251332 U CN 215251332U
- Authority
- CN
- China
- Prior art keywords
- plates
- polycrystalline silicon
- plate
- device suitable
- carbon felt
- 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.)
- Active
Links
Images
Landscapes
- Silicon Compounds (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
A crucible heat insulation device suitable for polycrystalline silicon ingot casting comprises carbon felt cloth, lifting plates and stand columns, wherein protection plates are arranged on the outer sides of crucibles, top plates are arranged at positions close to the top ends of the protection plates, bottom plates are arranged at positions close to the bottoms of the protection plates, the stand columns are connected between the top plates and the bottom plates, the lifting plates are arranged between the stand columns, the lifting plates vertically move up and down along the stand columns, and folding carbon felt cloth is connected between the lifting plates and the bottom plates; the utility model utilizes the adjustable carbon felt cloth plate to effectively block the heat radiation of the side heater to the bottom around the silicon ingot; the longitudinal temperature gradient is more uniform and reasonable, and the crystal quality of the finished polycrystalline silicon ingot is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of crystalline silicon production facility, in particular to crucible heat-proof device suitable for polycrystalline silicon ingot casting.
Background
The polysilicon ingot furnace is large-scale production equipment for producing solar-grade polysilicon ingots, adopts an advanced polysilicon directional solidification technology, directionally condenses and crystallizes silicon materials after high-temperature melting through a special process, thereby meeting the requirement of the quality of polysilicon for producing solar cells, and is intelligent large-scale production equipment which is suitable for long-time continuous work and has high precision, high reliability and high automation degree.
The polycrystalline silicon ingot furnace in the market is a water-cooling ingot furnace which is developed at home, an outer protection plate of the polycrystalline silicon ingot furnace is made of traditional isostatic pressing graphite, a heat insulation cage in the melting stage of the water-cooling ingot furnace is in a closed state usually, so that a heater can continuously bake and heat the side graphite protection plates, the temperature of the bottom of the silicon ingot rises rapidly due to the fact that the traditional protection plate absorbs heat rapidly, seed crystals in the peripheral area of the bottom of the silicon ingot are easily melted, and finally the quality of a finished silicon block product in the periphery of the furnace is inferior to the quality of a silicon block crystal in the center.
Disclosure of Invention
In view of the technical problems in the background art, the utility model provides a crucible heat insulation device suitable for polysilicon ingot casting, which utilizes an adjustable carbon felt cloth plate to effectively block the heat radiation of a side heater to the bottom around a silicon ingot; the longitudinal temperature gradient is more uniform and reasonable, and the crystal quality of the finished polycrystalline silicon ingot is greatly improved.
The utility model provides a crucible heat-proof device suitable for polycrystalline silicon ingot casting, is including carbon felt, lifter plate and stand, and the outside of crucible is provided with the guard plate, and the top department that is close to the guard plate is provided with the roof, and the bottom department that is close to the guard plate is provided with the bottom plate, be connected with the stand between roof and the bottom plate, be provided with the lifter plate between the stand, the lifter plate is along vertical movement about the stand, is connected with folding carbon felt between lifter plate and the bottom plate.
In the preferred scheme, screw holes are formed in the top plate side by side, and the top plate and the protection plate are connected into a whole after the screws penetrate through the screw holes.
In the preferred scheme, the upright posts are provided with the sliding blocks, the lifting plates are connected between the sliding blocks, and the sliding blocks vertically slide along the outer walls of the upright posts and drive the lifting plates to synchronously move; the upright post is evenly provided with adjusting holes.
In the preferred scheme, a clamping bolt is arranged on the sliding block and penetrates through the sliding block and the adjusting hole to fix the positions of the sliding block and the adjusting hole mutually.
In the preferred scheme, the carbon felt cloth is made of flexible heat insulation materials.
This patent can reach following beneficial effect:
1. according to the device, the heat insulation carbon felt cloth is additionally arranged on the outer side of the crucible protection plate, so that the heat radiation of the side heater to the peripheral bottom of the silicon ingot can be effectively blocked, the melting of seed crystals in the peripheral area of the bottom of the silicon ingot caused by the overhigh temperature of the bottom of the silicon ingot is prevented, and the quality of polycrystalline silicon crystals is greatly improved;
2. the device utilizes over-and-under type mechanism, and the accurate accuse temperature is realized according to the crucible of difference to the scope of sheltering from of steerable heat insulation carbon felt cloth, has guaranteed the finished product quantity of high-efficient silicon piece, and need not to change the interior thermal field structure of stove.
Drawings
The invention will be further explained with reference to the following figures and examples:
FIG. 1 is a schematic view of the overall appearance structure of the present invention;
FIG. 2 is a schematic view of the overall appearance structure of the present invention;
FIG. 3 is a front plan view of the overall appearance structure of the present invention;
fig. 4 is a schematic structural view of the heat insulation device of the present invention.
In the figure: crucible 1, guard plate 2, roof 3, bottom plate 4, slider 5, stand 6, lifter plate 7, carbon felt cloth 8, regulation hole 9, screw 10, screens bolt 11.
Detailed Description
As shown in fig. 1 and 2, the crucible heat insulation device suitable for polycrystalline silicon ingot casting comprises a carbon felt cloth 8, a lifting plate 7 and a stand column 6, wherein a protection plate 2 is arranged on the outer side of a crucible 1, a top plate 3 is arranged at the position close to the top end of the protection plate 2, a bottom plate 4 is arranged at the position close to the bottom end of the protection plate 2, the stand column 6 is connected between the top plate 3 and the bottom plate 4, the top plate 3 and the bottom plate 4 can be connected into a whole through the stand column 6, the lifting plate 7 is arranged between the stand columns 6, the lifting plate 7 vertically moves along the stand column 6 up and down, the folding carbon felt cloth 8 is connected between the lifting plate 7 and the bottom plate 4, and the height of the lifting plate 7, which is capable of adjusting the shielding height of the carbon felt cloth 8, can be adjusted by lifting up and down.
Preferably, as shown in fig. 2 to 4, screw holes are formed in the top plate 3 side by side, screws 10 penetrate through the screw holes to connect the top plate 3 and the protection plate 2 into a whole, the heat insulation device can be fixed on the outermost layer of the protection plate 2 through the screws 10, and the temperature of the outer layer of the protection plate 2 is controlled.
According to the preferable scheme, as shown in fig. 4, sliding blocks 5 are arranged on upright posts 6, lifting plates 7 are connected between the sliding blocks 5, the sliding blocks 5 can vertically slide along the outer walls of the upright posts 6, the sliding blocks 5 can drive the lifting plates 7 to synchronously vertically slide, and the lower ends of the lifting plates 7 are connected with folding carbon felt cloth 8, so that the shielding height of the carbon felt cloth 8 can be adjusted through sliding;
the upright post 6 is uniformly provided with adjusting holes 9, and a user can set the spacing distance between the adjusting holes 9 so as to adjust the lifting precision of the lifting plate 7.
According to the preferable scheme, as shown in fig. 3 and 4, a clamping bolt 11 is installed on the sliding block 5, the clamping bolt 11 is in threaded connection with the sliding block 5 and the adjusting hole 9, after the sliding block 5 moves to the position of the adjusting hole 9, the clamping bolt 11 is screwed, the clamping bolt 11 can penetrate through the sliding block 5 and the adjusting hole 9 and fix the position between the sliding block 5 and the adjusting hole 9, and the height adjustment of the lifting plate 7 is completed.
As shown in fig. 4, the carbon felt 8 is made of a flexible heat insulating material, and the folding and lifting functions of the carbon felt 8 can be achieved through the design, so that the heat insulating effect of the shielding part of the carbon felt 8 can be ensured.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (5)
1. The utility model provides a crucible heat-proof device suitable for polycrystalline silicon ingot casting, including carbon felt cloth (8), lifter plate (7) and stand (6), its characterized in that: the outer side of the crucible (1) is provided with a protection plate (2), a top plate (3) is arranged at the position close to the top end of the protection plate (2), a bottom plate (4) is arranged at the position close to the bottom of the protection plate (2), stand columns (6) are connected between the top plate (3) and the bottom plate (4), lifting plates (7) are arranged between the stand columns (6), the lifting plates (7) vertically move along the stand columns (6), and folding carbon felt cloth (8) is connected between the lifting plates (7) and the bottom plate (4).
2. The crucible heat insulation device suitable for polycrystalline silicon ingots according to claim 1, characterized in that: screw holes are formed in the top plate (3) side by side, and the top plate (3) and the protection plate (2) are connected into a whole after the screws (10) penetrate through the screw holes.
3. The crucible heat insulation device suitable for polycrystalline silicon ingots according to claim 1, characterized in that: the upright post (6) is provided with sliding blocks (5), lifting plates (7) are connected between the sliding blocks (5), and the sliding blocks (5) vertically slide along the outer wall of the upright post (6) and drive the lifting plates (7) to synchronously move; the upright post (6) is uniformly provided with adjusting holes (9).
4. The crucible heat insulation device suitable for polycrystalline silicon ingots according to claim 3, characterized in that: a clamping bolt (11) is arranged on the sliding block (5), and the clamping bolt (11) penetrates through the sliding block (5) and the adjusting hole (9) to fix the positions of the sliding block and the adjusting hole mutually.
5. The crucible heat insulation device suitable for polycrystalline silicon ingots according to claim 1, characterized in that: the carbon felt cloth (8) is made of flexible heat insulation materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121689049.4U CN215251332U (en) | 2021-07-23 | 2021-07-23 | Crucible heat-insulating device suitable for polycrystalline silicon ingot casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121689049.4U CN215251332U (en) | 2021-07-23 | 2021-07-23 | Crucible heat-insulating device suitable for polycrystalline silicon ingot casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215251332U true CN215251332U (en) | 2021-12-21 |
Family
ID=79494124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121689049.4U Active CN215251332U (en) | 2021-07-23 | 2021-07-23 | Crucible heat-insulating device suitable for polycrystalline silicon ingot casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215251332U (en) |
-
2021
- 2021-07-23 CN CN202121689049.4U patent/CN215251332U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8172944B2 (en) | Device for producing a block of crystalline material with modulation of the thermal conductivity | |
| CN102162125B (en) | Thermal field structure of polysilicon ingot casting furnace | |
| CN104195634B (en) | Large scale silicon ingot polycrystalline ingot furnace thermal field structure | |
| CN202989351U (en) | Ingot furnace thermal field structure based on multiple heaters | |
| KR20100024675A (en) | Manufacturing equipment for ingot and method of manufacturing the ingot | |
| CN101109602A (en) | Thermal field structure of polysilicon ingot furnace | |
| CN101323973A (en) | Polysilicon directional long crystal thermal field | |
| CN215251332U (en) | Crucible heat-insulating device suitable for polycrystalline silicon ingot casting | |
| CN102433585B (en) | Thermal field structure of quasi-monocrystal ingot furnace | |
| CN202164380U (en) | Thermal field structure of high-yield polycrystalline silicon ingot casting furnace | |
| CN113106545B (en) | Silicon core ingot furnace equipment and using method thereof | |
| JP4258973B2 (en) | Crystalline silicon production equipment | |
| CN218175195U (en) | Device for simultaneously drawing multiple crystals | |
| CN102154683A (en) | Monocrystal/polycrystal directional solidification system of metal heating body structure | |
| CN201217712Y (en) | Polysilicon directional long crystal thermal field structure | |
| KR100931018B1 (en) | Device for manufacturing polycrystalline silicon ingot for solar cell equipped with door opening and closing device using hanger | |
| CN203144557U (en) | Bidirectional enhanced gas cooling device in crystal growth device | |
| CN106283182B (en) | A kind of polycrystalline silicon casting ingot process | |
| CN205205273U (en) | Ingot furnace thermal field device with adjustable connecting rod | |
| CN107523865A (en) | A kind of energy-saving and high efficient polycrystalline silicon ingot or purifying furnace for orienting water-cooling | |
| CN204111924U (en) | A kind of large size silicon ingot polycrystalline ingot furnace Novel hot field structure | |
| CN207811929U (en) | A kind of side heater assembly and its lifting panel assembly applied to polycrystalline cast ingot | |
| CN203999907U (en) | Cast the silicon ingot stove of large weight silicon ingot | |
| CN215251331U (en) | Inner cavity structure of polycrystalline silicon ingot furnace | |
| CN106048718A (en) | Polycrystalline silicon semi-casting ingot impurity removing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |