CN204779926U - Crucible subassembly of polycrystal ingot furnace - Google Patents
Crucible subassembly of polycrystal ingot furnace Download PDFInfo
- Publication number
- CN204779926U CN204779926U CN201520529021.2U CN201520529021U CN204779926U CN 204779926 U CN204779926 U CN 204779926U CN 201520529021 U CN201520529021 U CN 201520529021U CN 204779926 U CN204779926 U CN 204779926U
- Authority
- CN
- China
- Prior art keywords
- crucible
- graphite
- curb plate
- side plate
- carpet veneer
- 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
Landscapes
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The utility model provides a crucible subassembly of polycrystal ingot furnace belongs to polycrystalline silicon ingot ingot casting technical field. This crucible subassembly of polycrystal ingot furnace, including quartz crucible, the crucible backplate, soft carpet veneer, quartz crucible is square structure, the crucible backplate includes graphite curb plate and graphite bottom plate, the graphite curb plate is being hugged closely in quartz crucible's the outside all around, the graphite bottom plate to quartz crucible's bottom pad, soft carpet veneer is located the periphery of graphite curb plate, the graphite curb plate includes curb plate no. 1 and curb plate no. 2, the terminal surface of curb plate no. 1 leans on with the side counterbalance of curb plate no. 2, the concave part that has the indent on the terminal surface of curb plate no. 1, the bellied fixture block portion corresponding with the concave part shape have on the side of curb plate no. 2, curb plate no. 1 passes through the fix with screw with curb plate no. 2. The utility model discloses well curb plate no. 1 and curb plate policy of "literature and art should serve both people and socialism" detachability, being equipped with of soft carpet veneer has improved the conversion efficiency that silicon is expected.
Description
Technical field
The utility model belongs to polycrystal silicon ingot ingot casting technology field, relates to a kind of crucible assembly of polycrystalline ingot furnace.
Background technology
Solar energy power generating is one of form of sustainable energy utilization with fastest developing speed at present, is obtained in recent years develops rapidly in various countries.At present, application the most generally uses crystal silicon solar energy battery, and existing crystal silicon solar energy battery is made primarily of monocrystalline silicon piece or polysilicon chip.Monocrystaline silicon solar cell sheet efficiency of conversion is high, quality of finished product good, but monocrystalline silicon piece exists the shortcoming that preparation cost is high, yield poorly.Polysilicon chip production cost comparatively monocrystalline silicon piece is low, the large but polysilicon chip of with short production cycle and output due to forming core random, grain size otherness is large, and crystal boundary distribution is unordered, and dislocation desity is high, so efficiency of conversion is low.Current polysilicon chip mainly adopts directional solidification method to carry out ingot casting, and the quartz crucible being about to be equipped with silicon material is put into ingot furnace and carried out melting long brilliant, after annealed cooling, namely obtain silicon ingot.In order to improve silicon chip efficiency of conversion, mat formation bottom the quartz crucible mode of seed crystal of normal employing carries out induced nucleation to reduce the dislocation desity of forming core stage silicon ingot inside, and control the rate of propagation of the inner dislocation desity of long brilliant stage silicon ingot, thus realize the high conversion efficiency of silicon chip.Fusion stage, the silicon material in quartz crucible down progressively melts from top, in order to the effect making the seed crystal bottom quartz crucible play induced nucleation, must ensure that seed crystal is not all melted.In order to realize this purpose, the normal quartz pushrod that adopts measures the seed crystal height do not melted, and when measuring the seed crystal height do not melted and reaching special value, namely carries out operation to ingot furnace and enters long brilliant link, thus realize the object of seed crystal induced nucleation.Control in the process of seed crystal fusing height, enclose in graphite side bottom outside and add a circle charcoal felt and contribute to controlling seed crystal burn-off rate, this is because charcoal felt thermal conductivity is low, there is heat-blocking action, the rate of heat exchange between well heater and silicon material can be reduced.But charcoal felt is unadjustable, controls heat insulation position precision low.
In addition in the polycrystalline silicon ingot or purifying furnace of existing use, all be made up of one piece of base plate and four blocks of side plates for supporting the plumbago crucible of quartz crucible, when there is silicon hydrorrhea stream, silicon liquid flows everywhere on smooth plumbago crucible base plate, thus can not find timely, extend the time of fire alarming of accident, potential safety hazard and the wasting of resources can be caused.
Utility model content
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of crucible assembly of polycrystalline ingot furnace.
The purpose of this utility model realizes by following technical proposal: a kind of crucible assembly of polycrystalline ingot furnace, comprise quartz crucible, crucible guard boards, soft carpet veneer, it is characterized in that, described quartz crucible is square structure, crucible guard boards comprises graphite side and graphite base plate, graphite side is close to outside the surrounding of quartz crucible, the bottom of quartz crucible cushions graphite base plate, soft carpet veneer is positioned at the periphery of graphite side, described graphite side comprises side plate one and side plate two, the end face of side plate one and the side of side plate two lean, the end face of side plate one has the concave part of indent, the side of side plate two has the fastening block part of the projection corresponding with concave part shape, side plate one and side plate two are fixed by screw.
Crucible guard boards is mainly used in supporting quartz crucible, and soft carpet veneer is positioned at the outside of graphite side, and well heater is positioned at the outside of soft carpet veneer, and soft carpet veneer is sandwiched between graphite side and well heater.Graphite side is made up of two blocks of side plates one and two blocks of side plates two, and side plate one and side plate two surround square structure and mutually mate with the outside of quartz crucible.Side plate two has the threaded hole mutually mated with screw, threaded hole is penetration state and is positioned at the centre of fastening block part, side plate one has the pilot hole that mutually mates with screw equally and pilot hole is positioned in the middle of concave part, when fastening block part embeds concave part, threaded hole and pilot hole are connected state, side plate one and side plate two can be locked by screw by staff, improve the stability of graphite side.
Described soft carpet veneer can slide up and down along graphite side.
With soft carpet veneer mutually direct against the effect of heat insulation at graphite side position, the rate of heat exchange between well heater and silicon material can be reduced.Soft carpet veneer can slide up and down along graphite side the adjustment being mainly convenient to staff, improves the accuracy to seed crystal burn-off rate, reduces deviation, reaches desirable object.
Fastening block part and concave part are all in circular arc.
Fastening block part and concave part are all in box-shaped.
Draw-in groove portion and concave part adopt circular arc or box-shaped all fastening block part can be realized to embed concave part, improve the strength of joint between side plate one and side plate two.
Graphite base plate is network-like filter structure.
Adopt above structure, can guarantee when silicon liquid flows out from the crack of quartz crucible, the flow direction of silicon liquid can be guided in time, namely silicon liquid is guided to flow down from the gap of the network-like filter structure of graphite base plate, thus can and alarm, be convenient to staff can in the very first time, problem occur and deal with problems, reduce the waste of silicon liquid.
Described soft carpet veneer is carbon fiber flexible felt layer, and thickness is 0.5cm-1.5cm.
Carbon fiber flexible felt layer has outstanding heat insulation characteristics, can reduce heat losses, market has in more common thermal insulator and much have employed carbon fiber flexible felt.
Compared with prior art, the advantage of the crucible assembly of this polycrystalline ingot furnace have following some:
1, namely side plate one and side plate two need back-out screw detachably, and convenient disassembly is quick;
2, crucible guard boards increases soft carpet veneer outward and is incubated, and prevents heat radiation uneven, ensures that the growth of silicon ingot can vertically be carried out, effectively gets rid of dislocation, thus reduce the silicon crystal seed crystal life-span, improve more than efficiency of conversion to 18%.
3, soft carpet veneer can slide up and down along graphite side, has adjustable function, improves the accuracy controlling seed crystal burn-off rate.
4, when silicon liquid flows out from the crack of quartz crucible, can directly flow down from the gap of the network-like filter structure of graphite base plate, being convenient to staff can occur in the very first time and solve, and reduces the waste of silicon liquid, avoids the existence of potential safety hazard.
Accompanying drawing explanation
Fig. 1 is the side-view of the crucible assembly of this polycrystalline ingot furnace.
Fig. 2 is that the local between side plate one with side plate two is connected sectional view
In figure, 1, quartz crucible; 2, soft carpet veneer; 3, graphite base plate; 4, graphite side; 5, side plate one; 6, side plate two; 7, concave part; 8, fastening block part; 9, screw.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1 and Figure 2, the crucible assembly of this polycrystalline ingot furnace, comprise quartz crucible 1, crucible guard boards, soft carpet veneer 2, quartz crucible 1 is square structure, crucible guard boards comprises graphite side 4 and graphite base plate 3, be close to graphite side 4 outside the surrounding of quartz crucible 1, the bottom of quartz crucible 1 cushions graphite base plate 3, and soft carpet veneer 2 is positioned at the periphery of graphite side 4.Crucible guard boards is mainly used in supporting quartz crucible 1, and soft carpet veneer 2 is positioned at the outside of graphite side 4, and well heater is positioned at the outside of soft carpet veneer 2, and soft carpet veneer 2 is sandwiched between graphite side 4 and well heater.Graphite side 4 is made up of two blocks of side plates 1 and two blocks of side plates 26, and side plate 1 and side plate 26 surround square structure and mutually mate with the outside of quartz crucible 1.
Graphite side 4 comprises side plate 1 and side plate 26, the end face of side plate 1 and the side of side plate 26 lean, the end face of side plate 1 has the concave part 7 of indent, the side of side plate 26 has the fastening block part 8 of the projection corresponding with concave part 7 shape, and side plate 1 and side plate 26 are fixed by screw 9.Fastening block part 8 and concave part 7 are all in circular arc, or fastening block part 8 and concave part 7 are all in box-shaped.Draw-in groove portion and concave part 7 adopt circular arc or box-shaped all fastening block part 8 can be realized to embed concave part 7, improve the annexation between side plate 1 and side plate 26.
Side plate 26 has the threaded hole mutually mated with screw 9, threaded hole is penetration state and is positioned at the centre of fastening block part 8, side plate 1 has the pilot hole that mutually mates with screw 9 equally and pilot hole is positioned in the middle of concave part 7, when fastening block part 8 embeds concave part 7, threaded hole and pilot hole are connected state, side plate 1 and side plate 26 can be locked by screw 9 by staff, improve the stability of graphite side 4.
Soft carpet veneer 2 can slide up and down along graphite side 4.With soft carpet veneer 2 mutually direct against the effect of heat insulation at graphite side 4 position, the rate of heat exchange between well heater and silicon material can be reduced.Soft carpet veneer 2 can slide up and down along graphite side 4 adjustment being mainly convenient to staff, improves the accuracy to seed crystal burn-off rate, reduces deviation, reaches desirable object.Soft carpet veneer 2 is carbon fiber flexible felt layer 2, and thickness is 1cm.Carbon fiber flexible felt layer 2 has outstanding heat insulation characteristics, can reduce heat losses, market has in more common thermal insulator and much have employed carbon fiber flexible felt.
Graphite base plate 3 is network-like filter structure.When can guarantee to flow out the crack of silicon liquid from quartz crucible 1, the flow direction of silicon liquid can be guided in time, namely silicon liquid is guided to flow down from the gap of the network-like filter structure of base plate, thus can and alarm, be convenient to staff can in the very first time, problem occur and deal with problems, reduce the waste of silicon liquid.
Basic functional principle: when producing polycrystal silicon ingot, needing that silicon material is heated to upper more than 1420 DEG C and making it melt, then carrying out directional freeze.And quartz crucible 1 will start to soften at about 1300 DEG C, the crucible guard boards that therefore outside quartz crucible 1 and bottom is close to mutually adopts graphite side 4 and graphite base plate 3, utilizes black side plate and graphite base plate 3 to carry out support quartz crucible 1.Silicon material and graphite directly contact and can react in addition, so can not directly use plumbago crucible to carry silicon material.Silicon material is loaded quartz crucible 1, heat quartz crucible 1, the silicon material in quartz crucible 1 down progressively melts from top, is not all melted by the heat insulation guarantee seed crystal of soft carpet veneer 2, staff can regulate the position of soft carpet veneer 2 before heating, improves the accuracy needing heat insulation place.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ the terms such as quartz crucible 1, soft carpet veneer 2, graphite base plate 3, graphite side 4, side plate 1, side plate 26, concave part 7, fastening block part 8, screw 9 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (6)
1. the crucible assembly of a polycrystalline ingot furnace, comprise quartz crucible (1), crucible guard boards, soft carpet veneer (2), it is characterized in that, described quartz crucible (1) is square structure, crucible guard boards comprises graphite side (4) and graphite base plate (3), graphite side (4) is close to outside the surrounding of quartz crucible (1), the bottom of quartz crucible (1) cushions graphite base plate (3), soft carpet veneer (2) is positioned at the periphery of graphite side (4), described graphite side (4) comprises side plate one (5) and side plate two (6), the end face of side plate one (5) and the side of side plate two (6) lean, the end face of side plate one (5) has the concave part (7) of indent, the side of side plate two (6) has the fastening block part (8) of the projection corresponding with concave part (7) shape, side plate one (5) and side plate two (6) are fixed by screw (9).
2. the crucible assembly of a kind of polycrystalline ingot furnace according to claim 1, is characterized in that, described soft carpet veneer (2) can slide up and down along graphite side (4).
3. the crucible assembly of a kind of polycrystalline ingot furnace according to claim 2, is characterized in that, described fastening block part (8) and concave part (7) are all in circular arc.
4. the crucible assembly of a kind of polycrystalline ingot furnace according to claim 2, is characterized in that, described fastening block part (8) and concave part (7) are all in box-shaped.
5. the crucible assembly of a kind of polycrystalline ingot furnace according to claim 1, is characterized in that, described graphite base plate (3) is network-like filter structure.
6. the crucible assembly of a kind of polycrystalline ingot furnace according to claim 5, is characterized in that, described soft carpet veneer (2) is carbon fiber flexible felt layer (2), and thickness is 0.5cm-1.5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520529021.2U CN204779926U (en) | 2015-07-21 | 2015-07-21 | Crucible subassembly of polycrystal ingot furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520529021.2U CN204779926U (en) | 2015-07-21 | 2015-07-21 | Crucible subassembly of polycrystal ingot furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204779926U true CN204779926U (en) | 2015-11-18 |
Family
ID=54520016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520529021.2U Active CN204779926U (en) | 2015-07-21 | 2015-07-21 | Crucible subassembly of polycrystal ingot furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204779926U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087054A (en) * | 2016-08-26 | 2016-11-09 | 常熟华融太阳能新型材料有限公司 | A kind of Novel polycrystalline silicon quartz crucible for ingot casting card article |
-
2015
- 2015-07-21 CN CN201520529021.2U patent/CN204779926U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087054A (en) * | 2016-08-26 | 2016-11-09 | 常熟华融太阳能新型材料有限公司 | A kind of Novel polycrystalline silicon quartz crucible for ingot casting card article |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205529143U (en) | Polycrystalline silicon ingot furnace and be applied to device in polycrystalline silicon ingot furnace | |
| CN105887186A (en) | Silicon single-crystal pulling equipment and growing method | |
| CN102965727B (en) | Polycrystalline silicon ingot and casting method thereof | |
| CN204779926U (en) | Crucible subassembly of polycrystal ingot furnace | |
| CN203393257U (en) | Ingot furnace with plurality of heat-conduction bottom plates for producing efficient polycrystalline silicon ingot | |
| CN203976975U (en) | A kind of polycrystalline silicon ingot or purifying furnace heat exchange platform and polycrystalline silicon ingot or purifying furnace | |
| CN103397379A (en) | High-efficiency polycrystalline silicon ingot casting furnace | |
| CN207646330U (en) | Crystal ingot casting heater and casting unit | |
| CN209584421U (en) | A kind of thermal field structure suitable for octagonal crystal silicon ingot casting | |
| CN203174222U (en) | Thermal field structure of polycrystalline silicon ingot casting furnace | |
| CN204111927U (en) | A kind of high-efficiency polycrystalline ingot furnace thermal field structure | |
| CN205474097U (en) | A heat exchange platform for growing accurate single crystal | |
| CN203382852U (en) | Variable heater high-efficient polycrystalline silicon ingot casting furnace | |
| CN103696002B (en) | The ingot furnace thermal field structure of electromagnetism and resistance Hybrid Heating and using method | |
| CN103628126A (en) | Manufacturing method for monocrystalloid crystalline silica ingot and polysilicon ingot furnace | |
| CN202755096U (en) | Heat insulation device for ingot furnace | |
| CN203065635U (en) | Bottom enhanced cooling device | |
| CN103334154A (en) | Preparation method of polycrystalline silicon ingots based on thermal exchange technology | |
| CN209537669U (en) | A kind of crucible | |
| CN204111921U (en) | Heat-proof device and polycrystalline silicon ingot or purifying furnace | |
| CN207811931U (en) | A kind of crucible guard boards device of quasi- G7 ingot castings thermal field | |
| CN203999908U (en) | Polycrystalline silicon ingot casting thermal field structure | |
| CN207811929U (en) | A kind of side heater assembly and its lifting panel assembly applied to polycrystalline cast ingot | |
| CN208046935U (en) | A kind of graphene carbon electric heater | |
| CN110565163A (en) | Ingot casting heater and ingot casting furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 314415 21 pillow Road, Huang Wan Town, Haining, Jiaxing, Zhejiang Patentee after: Zhejiang Hao Neng Au Optronics Co Address before: 314415 21 pillow Road, Huang Wan Town, Haining, Jiaxing, Zhejiang Patentee before: ZHEJIANG HOUNEN SOLAR CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |