CN210886316U - Polysilicon ingot casting thermal field heat insulation cage - Google Patents
Polysilicon ingot casting thermal field heat insulation cage Download PDFInfo
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- CN210886316U CN210886316U CN201921084569.5U CN201921084569U CN210886316U CN 210886316 U CN210886316 U CN 210886316U CN 201921084569 U CN201921084569 U CN 201921084569U CN 210886316 U CN210886316 U CN 210886316U
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Abstract
The utility model discloses a polysilicon ingot casting thermal field heat insulation cage, which comprises an isolation cage frame, wherein a fixing frame is arranged above the isolation cage frame, an upper heat insulation plate is arranged on the fixing frame, heater fixing holes are arranged around the upper surface of the upper heat insulation plate, the lower surface of the upper heat insulation plate is connected with a heater through the heater fixing holes, and heat insulation plate through holes are arranged at the peripheral edge of the upper surface of the upper heat insulation plate, the utility model can increase the gas flow in a polysilicon ingot casting furnace through the heat insulation plate through holes, simultaneously, the melt flow is increased, the impurity discharge is more favorably realized, the quality of a polysilicon ingot is improved, double-layer heat insulation is carried out through a graphite carbon felt and a molybdenum plate, the heat insulation effect is better, and the heat insulation is further carried out through the heat insulation plate at the side of the heat insulation cage, thereby the, the gas flow in the polycrystalline ingot furnace is increased, and the quality of the polycrystalline silicon ingot is improved.
Description
Technical Field
The utility model relates to a high-efficient polycrystal casting production technical field specifically is a thermal-insulated cage in polycrystalline silicon ingot casting thermal field.
Background
The polysilicon ingot furnace is mainly used for large-scale production of solar-grade polysilicon ingots, an advanced polysilicon directional solidification technology is adopted, silicon materials are directionally condensed and crystallized through a special process after being melted at high temperature, so that the requirement of the quality of polysilicon for solar cell production is met, the polysilicon ingot furnace is intelligent large-scale production equipment which is suitable for long-time continuous work, high in precision, high in reliability and high in automation degree, the important part of the quality of the polysilicon ingots is determined during a polysilicon ingot casting thermal field, at present, the airflow of the polysilicon ingot casting thermal field in the photovoltaic industry is supplied with air from the upper part of a heat insulation cage, exhaust gas is exhausted from the upper part and the lower part of the heat insulation cage through a vacuum pump, the flow of a melt is increased through gas flow, impurities are segregated to the top, but the method has certain defects, the gas flow is not smooth, the quality of the polysilicon ingot quality.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome current defect, provide a thermal-insulated cage in polycrystalline silicon ingot casting thermal field, improved polycrystalline silicon ingot casting furnace thermal field gas flow, improve photoelectric conversion efficiency, reduce impurity, the effectual product manufacturing cost that has reduced, the polycrystalline silicon bulk of producing is better, can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a polycrystalline silicon ingot casting thermal field thermal-insulated cage, includes keeps apart the cage frame, the top of keeping apart the cage frame is equipped with the mount, be equipped with the heat insulating board on the mount, the upper surface of going up the heat insulating board is equipped with the heater fixed orifices all around, the lower surface of going up the heat insulating board is connected with the heater through heater fixed orifices, the edge all around of going up the heat insulating board upper surface is equipped with the heat insulating board through-hole, it does not have the side on surface to keep apart the cage frame to be equipped with thermal-insulated cage side heated board, one side of thermal-insulated cage side heated board is equipped with graphite carbon felt, graphite carbon felt is connected with the molybdenum plate through the molybdenum filament, the heater is equipped with thermal-insulated cushion with isolation cage frame junction, the bottom surface of keeping.
As an optimized technical scheme of the utility model, the quantity of heat insulating board through-hole is 16, and heat insulating board through-hole evenly distributed is around last heat insulating board, heat insulating board through-hole warp is 10mm-40mm, and the hole interval between the heat insulating board through-hole is 400mm-2800 mm.
As an optimized technical proposal of the utility model, the position of the through hole of the heat insulation plate is 60mm-300mm away from the heat insulation cage side heat insulation plate.
As an optimal technical proposal of the utility model, the heat insulation board through hole is provided with a graphite lantern ring, the outer aperture of the graphite lantern ring is 10mm-40mm, and the graphite lantern ring is designed into an I-shaped structure.
Compared with the prior art, the beneficial effects of the utility model are that: this use is novel through the heat insulating board through-hole, can increase the gas flow in the polycrystal ingot furnace, it is favorable to impurity discharge more to increase the fuse-element flow simultaneously, polycrystalline silicon ingot quality has obtained the improvement, carry out the bilayer through graphite carbon felt and molybdenum plate and separate the temperature, it is better to separate the temperature effect, further keep warm through thermal-insulated cage side heated board, thereby reduce the cost of production, this device simple structure, compare the defect of traditional improvement prior art, gas flow in the polycrystal ingot furnace will be increased, the heat preservation effect is better, polycrystalline silicon ingot's quality has been improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view of the present invention;
fig. 3 is a schematic diagram of the structure of the graphite sleeve ring of the present invention.
In the figure: 1 isolation cage frame, 2 heater fixing holes, 3 fixing frames, 4 thermal baffle through holes, 5 heaters, 6 thermal baffle cage side thermal baffle, 7 upper thermal baffle, 8 directional heating block, 9 graphite carbon felt, 10 molybdenum plate, 11 thermal insulation rubber mat and 12 graphite lantern ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a polysilicon ingot casting thermal field heat insulation cage comprises an insulation cage frame 1, a fixing frame 3 is arranged above the insulation cage frame 1, an upper heat insulation plate 7 is arranged on the fixing frame 3, heater fixing holes 2 are arranged on the periphery of the upper surface of the upper heat insulation plate 7, a heater 5 is connected to the lower surface of the upper heat insulation plate 7 through the heater fixing holes 2, heat insulation plate through holes 4 are arranged at the periphery edge of the upper surface of the upper heat insulation plate 7, the gas flow in a polysilicon ingot casting furnace can be increased through the heat insulation plate through holes 4, the melt flow is increased, the impurity discharge is facilitated, the quality of a polysilicon ingot is improved, the number of the heat insulation plate through holes 4 is 16, the heat insulation plate through holes 4 are uniformly distributed on the periphery of the upper heat insulation plate 7, the hole diameter of the heat insulation plate through holes 4 is 10mm-40mm, the hole interval between the heat insulation plate through holes 4 is 400mm, the novel heat insulation plate is characterized in that a graphite lantern ring 12 is arranged on the heat insulation plate through hole 4, the outer aperture of the graphite lantern ring 12 is 10-40 mm, the graphite lantern ring 12 is of an I-shaped structure, a heat insulation cage side heat insulation plate 6 is arranged on the side surface, without the surface, of the isolation cage frame 1, heat insulation is further carried out through the heat insulation cage side heat insulation plate 6, and therefore production cost is reduced, a graphite carbon felt 9 is arranged on one side of the heat insulation cage side heat insulation plate 6, the graphite carbon felt 9 is connected with a molybdenum plate 10 through a molybdenum wire, double-layer heat insulation is carried out through the graphite carbon felt 9 and the molybdenum plate 10, the heat insulation effect is better, a heat insulation rubber mat 11 is arranged at the joint of the heater 5 and the isolation cage frame 1, a directional heating block 8 is arranged on the bottom surface of the inner surface of the isolation cage frame 1, the heater 5 is electrically, the heat preservation effect is better, has improved polycrystalline silicon ingot's quality.
When in use: starting the heater 5 through an external switch, heating the polycrystalline silicon by the heater 5, preventing heat from being dissipated by the graphite carbon felt 9 and the molybdenum plate 10, further preserving heat by the heat insulation cage side heat insulation plate 6, reducing production cost, increasing gas flow in the polycrystalline ingot furnace by the heat insulation plate through holes 4 above the heat insulation plate 7, simultaneously increasing melt flow, and being more beneficial to impurity discharge, and improving the quality of polycrystalline silicon ingots.
This use is novel through heat insulating board through-hole 4, can increase the gas flow in the polycrystal ingot furnace, it is favorable to impurity discharge more to increase the fuse-element flow simultaneously, polycrystalline silicon ingot quality has obtained the improvement, carry out the bilayer through graphite carbon felt 9 and molybdenum plate 10 and separate the temperature, it is better to separate the temperature effect, keep warm through 6 further going on of thermal-insulated cage side insulation board, thereby reduce the cost of production, this device simple structure, compare the defect of traditional improvement prior art, gas flow in the polycrystal ingot furnace will be increased, the heat preservation effect is better, polycrystalline silicon ingot's quality has been improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a thermal-insulated cage in polycrystalline silicon ingot casting thermal field, includes isolation cage frame (1), its characterized in that: a fixing frame (3) is arranged above the isolation cage frame (1), an upper heat insulation plate (7) is arranged on the fixing frame (3), heater fixing holes (2) are formed in the periphery of the upper surface of the upper heat insulation plate (7), a heater (5) is connected to the lower surface of the upper heat insulation plate (7) through the heater fixing holes (2), heat insulation plate through holes (4) are formed in the periphery of the upper surface of the upper heat insulation plate (7), a heat insulation cage side heat insulation plate (6) is arranged on the side surface of the isolation cage frame (1) without the surface, a graphite carbon felt (9) is arranged on one side of the heat insulation cage side heat insulation plate (6), the graphite carbon felt (9) is connected with a molybdenum plate (10) through molybdenum wires, a heat insulation rubber mat (11) is arranged at the joint of the heater (5) and the isolation cage frame (1), and a directional heating block (8) is, the heater (5) is electrically connected with the output end of an external power supply through an external switch.
2. The polysilicon ingot casting thermal field heat insulation cage according to claim 1, which is characterized in that: the number of the heat insulation plate through holes (4) is 16, the heat insulation plate through holes (4) are uniformly distributed on the periphery of the upper heat insulation plate (7), the hole diameter of each heat insulation plate through hole (4) is 10mm-40mm, and the hole distance between every two heat insulation plate through holes (4) is 400mm-2800 mm.
3. The polysilicon ingot casting thermal field heat insulation cage according to claim 1, which is characterized in that: the distance between the position of the heat insulation plate through hole (4) and the heat insulation cage side heat insulation plate (6) is 60-300 mm.
4. The polysilicon ingot casting thermal field heat insulation cage according to claim 1, which is characterized in that: the heat insulation plate is characterized in that a graphite sleeve ring (12) is arranged on the heat insulation plate through hole (4), the outer aperture of the graphite sleeve ring (12) is 10mm-40mm, and the graphite sleeve ring (12) is of an I-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921084569.5U CN210886316U (en) | 2019-07-11 | 2019-07-11 | Polysilicon ingot casting thermal field heat insulation cage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921084569.5U CN210886316U (en) | 2019-07-11 | 2019-07-11 | Polysilicon ingot casting thermal field heat insulation cage |
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| CN210886316U true CN210886316U (en) | 2020-06-30 |
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| CN201921084569.5U Active CN210886316U (en) | 2019-07-11 | 2019-07-11 | Polysilicon ingot casting thermal field heat insulation cage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943910A (en) * | 2021-08-26 | 2022-01-18 | 张小静 | Molybdenum plate stretching heat treatment annealing treatment die |
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2019
- 2019-07-11 CN CN201921084569.5U patent/CN210886316U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943910A (en) * | 2021-08-26 | 2022-01-18 | 张小静 | Molybdenum plate stretching heat treatment annealing treatment die |
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