CN205590835U - Polycrystal ingot furnace improves device that slope of marginal crystalline grain is grown - Google Patents
Polycrystal ingot furnace improves device that slope of marginal crystalline grain is grown Download PDFInfo
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- CN205590835U CN205590835U CN201620285479.2U CN201620285479U CN205590835U CN 205590835 U CN205590835 U CN 205590835U CN 201620285479 U CN201620285479 U CN 201620285479U CN 205590835 U CN205590835 U CN 205590835U
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- graphite
- soft felt
- crucible
- ingot furnace
- crystal
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Abstract
The utility model provides a polycrystal ingot furnace improves device that slope of marginal crystalline grain is grown, includes ingot casting furnace shell, crucible, the bottom is equipped with the graphite pillar in the ingot casting furnace shell, is equipped with pre -assigned student's blocking on the graphite pillar, is equipped with the graphite bottom plate in pre -assigned student's blocking, is equipped with the crucible on the graphite bottom plate, the crucible outside is equipped with the graphite backplate, graphite backplate lower extreme is equipped with graphite soft felt, and both ends respectively are equipped with the hole that 2 diameters are 6mm about graphite soft felt, and the equidistance is equipped with the hole that 3 diameters are 6mm in the middle of the graphite soft felt, and graphite soft felt is connected through bolt and graphite backplate. The problem of the horizontal gradient of polycrystal ingot furnace thermal field big is solved, have simple structure, characteristics with low costs, and eliminated the defect that crystal edge and head wrong big, few sub - life -span hang down to having improved the quality of crystal, does conversion efficiency have 0.03% 0.15% promotion.
Description
Technical field
This utility model relates to a kind of polycrystalline ingot furnace and improves the device of edge crystal grain inclination growth.
Background technology
At present, polycrystalline cast ingot industry is the first key element with conversion efficiency, is the most all half process of smelting for improving efficiency
Being main, but income is relatively low, cost is relatively big, and existing major part producer all upgrades in production capacity, along with the lifting of crystal ingot weight, the height of silico briquette
Degree also improves constantly, and the crystal grain at crystal ingot edge is due to the defect of thermal field, and Transverse Temperature Gradient is big, and crystal growth is the highest, and edge is brilliant
Grain tilts the most serious.
Utility model content
Its purpose of this utility model is that providing a kind of polycrystalline ingot furnace to improve edge crystal grain tilts the device of growth, solves
The problem that polycrystalline ingot furnace thermal field transverse gradients of having determined is big, has the feature of simple in construction, low cost, and eliminates crystal edge
Defect big with head mistake, that minority carrier life time is low, thus improve the quality of crystal, conversion efficiency has the lifting of 0.03%-0.15%.
The technical scheme realizing above-mentioned purpose and take, including ingot furnace housing, crucible, described ingot furnace housing inner bottom part
Being provided with graphite pillar, graphite pillar is provided with orientation and generates block, and orientation generates block and is provided with graphite base plate, and graphite base plate is provided with
Crucible, is provided with graphite protective plate outside described crucible, described graphite protective plate lower end is provided with graphite soft felt, and two ends, graphite soft felt left and right are each
Be provided with the hole of 2 a diameter of 6mm, the equidistant hole being provided with 3 a diameter of 6mm in the middle of graphite soft felt, graphite soft felt through bolt with
Graphite protective plate connects.
Beneficial effect
Compared with prior art this utility model has the following advantages.
After graphite protective plate increases soft felt and the optimization of long crystal formulations, the verticality of whole crystal ingot growth is more stable, crystal ingot matter
Amount significantly improves, and this product can reach following effect:
1) crystal ingot edge-perpendicular is obviously improved；
2) dislocation reduces, and minority carrier life time value improves；
3) conversion efficiency improves 0.03%-0.15%.
Accompanying drawing explanation
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is this apparatus structure schematic diagram.
Detailed description of the invention
This device includes that ingot furnace housing 1, crucible 2, described ingot furnace housing 1 inner bottom part are provided with graphite pillar 4, and graphite props up
Post 4 is provided with orientation and generates block 3, and orientation generates block 3 and is provided with graphite base plate 5, and graphite base plate 5 is provided with crucible 2, such as Fig. 1 institute
Showing, being provided with graphite protective plate 8 outside described crucible 2, described graphite protective plate 8 lower end is provided with graphite soft felt 7, graphite soft felt about 7 two
End is respectively provided with the equidistant hole being provided with 3 a diameter of 6mm in the middle of the hole of 2 a diameter of 6mm, graphite soft felt 7, graphite soft felt 7 warp
Bolt 6 is connected with graphite protective plate 8.
The length of described graphite soft felt 7, width, thickness are 935mm, 285mm, 10mm.
Increase graphite soft felt in graphite protective plate, primarily to reduce crystal ingot Transverse Temperature Gradient, make whole thermal field tend to
Homogeneous, thus it is overheated and cause crystal grain to tilt the unfavorable condition such as growth to eliminate crystal ingot edge crystal bar, graphite protective plate increases soft
After felt, corresponding formula carries out hyperthermic treatment, so that edge crystal grain vertical-growth, minority carrier life time improves accordingly, and dislocation reduces.
This device is made up of graphite material, and the manufacturing cycle is shorter, and cost is relatively low, and every stove only needs 4 pieces of soft felts, and changes simple
Convenient, only backplate punching need to be connected upper graphite soft felt and fix.
Increase graphite soft felt in graphite protective plate, primarily to reduce crystal ingot Transverse Temperature Gradient, make whole thermal field tend to
Homogeneous, thus it is overheated and cause crystal grain to tilt the unfavorable condition such as growth to eliminate crystal ingot edge crystal bar, graphite protective plate increases soft
After felt, corresponding formula carries out hyperthermic treatment, so that edge crystal grain vertical-growth, minority carrier life time improves accordingly, and dislocation reduces.
Every ingot furnace needs 4 pieces of soft felts, and graphite protective plate is punched according to the position of soft felt, all screws on screw rod in corresponding soft felt hole
Nut is fixed, and whole process just can complete half an hour, after having changed, to be mounted directly to can use on crucible, and formula rises
Temperature processes, it is possible to reach ingot casting demand.
Operation principle
After crystal ingot weight promotes, the crystal grain at crystal ingot edge is due to the defect of thermal field, and Transverse Temperature Gradient is big, and crystal growth is more
Height, edge crystal grain tilts all the more serious, and crystal grain tilts in growth course to there is bigger dislocation defects, and minority carrier life time is relatively low, shadow
Ring crystal ingot conversion efficiency.
The problem produced for solving edge crystal grain to tilt, graphite protective plate surrounding increases graphite soft felt, ingot casting process crystal ingot four
The effect of heat insulation in week can increase, and temperature reduces.Corresponding long crystal formulations hyperthermic treatment, crystal ingot central temperature can rise bright than surrounding
Aobvious, both combine, and crystal ingot Transverse Temperature Gradient can reduce, crystal grain thus vertical-growth can be kept, eliminate crystal edge and
The defect that head is wrong greatly, minority carrier life time is low, thus improve crystal mass, promote conversion efficiency.
Claims (2)
1. polycrystalline ingot furnace improves a device for edge crystal grain inclination growth, including ingot furnace housing (1), crucible (2), described
Ingot furnace housing (1) inner bottom part is provided with graphite pillar (4), and graphite pillar (4) is provided with orientation and generates block (3), and orientation generates block
(3) being provided with graphite base plate (5), graphite base plate (5) is provided with crucible (2), it is characterised in that described crucible (2) outside is provided with
Graphite protective plate (8), described graphite protective plate (8) lower end is provided with graphite soft felt (7), and graphite soft felt (7) left and right is respectively arranged at the two ends with 2 directly
Footpath is the hole of 6mm, the equidistant hole being provided with 3 a diameter of 6mm in the middle of graphite soft felt (7), graphite soft felt (7) through bolt (6) with
Graphite protective plate (8) connects.
A kind of polycrystalline ingot furnace the most according to claim 1 improves edge crystal grain and tilts the device of growth, it is characterised in that
The length of described graphite soft felt (7), width, thickness are 935mm, 285mm, 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620285479.2U CN205590835U (en) | 2016-04-08 | 2016-04-08 | Polycrystal ingot furnace improves device that slope of marginal crystalline grain is grown |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620285479.2U CN205590835U (en) | 2016-04-08 | 2016-04-08 | Polycrystal ingot furnace improves device that slope of marginal crystalline grain is grown |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205590835U true CN205590835U (en) | 2016-09-21 |
Family
ID=56922565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620285479.2U Expired - Fee Related CN205590835U (en) | 2016-04-08 | 2016-04-08 | Polycrystal ingot furnace improves device that slope of marginal crystalline grain is grown |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205590835U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780109A (en) * | 2016-04-08 | 2016-07-20 | 江西旭阳雷迪高科技股份有限公司 | Device and method for improving edge grain tilting growth of polycrystalline ingot furnace |
| CN110030828A (en) * | 2019-04-23 | 2019-07-19 | 西安航空制动科技有限公司 | A kind of vaccum sensitive stove |
-
2016
- 2016-04-08 CN CN201620285479.2U patent/CN205590835U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780109A (en) * | 2016-04-08 | 2016-07-20 | 江西旭阳雷迪高科技股份有限公司 | Device and method for improving edge grain tilting growth of polycrystalline ingot furnace |
| CN110030828A (en) * | 2019-04-23 | 2019-07-19 | 西安航空制动科技有限公司 | A kind of vaccum sensitive stove |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 Termination date: 20200408 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |