Thermal field system suitable for large charge amount of 90t furnace

A technology of thermal field and thermal insulation cylinder, applied in the field of thermal field system, can solve the problems of low output, unsatisfactory heating effect of the system, insufficient feeding of thermal system devices, etc., so as to increase the output, improve the heating effect, increase the The effect of the feeding amount

Inactive Publication Date: 2011-06-29
WINSUN NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above-mentioned traditional thermal field system, its disadvantage is that the heating effect inside the system is not satisfactory, and the heating system device is also insufficient in feeding, which also leads to low output

Method used

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  • Thermal field system suitable for large charge amount of 90t furnace
  • Thermal field system suitable for large charge amount of 90t furnace
  • Thermal field system suitable for large charge amount of 90t furnace

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0020] Different graphite thermal fields are installed in 90-22, and the dimensions of each component are as follows:

[0021] 1. Support rod outer diameter mm

[0022] 2. Heater: inner diameter mm, total height 655mm, heating area 500mm

[0023] 3. Three-petal crucible: outer diameter mm, inner diameter mm, height 412mm

[0024] 4. Inner layer of the guide tube: inner diameter mm, height 357mm

[0025] 5. The outer layer of the guide tube: the lower inner diameter mm, height 370mm

[0026] 6. Upper insulation barrel: inner diameter mm, total height 240mm, spigot height 10mm

[0027] 7. Medium insulation cylinder: inner diameter mm, height 560mm

[0028] 8. Lower insulation cylinder: inner diameter mm, height 320mm

[0029] 9. Upper insulation cover: inner diameter mm, outer diameter mm

[0030] 10. Lower insulation cover: inner diameter mm

specific Embodiment 2

[0031] Different graphite thermal fields are installed in 90-22, and the dimensions of each component are as follows:

[0032] 1. Support rod outer diameter mm

[0033] 2. Heater: outer diameter mm, total height 655mm, heating area 500mm

[0034] 3. Three-petal crucible: outer diameter mm, inner diameter mm, height 412mm

[0035] 4. Inner layer of the guide tube: inner diameter mm, height 357mm

[0036] 5. The outer layer of the guide tube: the lower inner diameter mm, height 370mm

[0037] 6. Upper insulation barrel: inner diameter mm, total height 240mm, spigot height 10mm

[0038] 7. Medium insulation cylinder: inner diameter mm, height 560mm

[0039] 8. Lower insulation cylinder: inner diameter mm, height 320mm

[0040] 9. Upper insulation cover: inner diameter mm, outer diameter mm

[0041] 10. Lower insulation cover: inner diameter mm

specific Embodiment 3

[0042] Comparison of the price and yield of the thermal field system of specific embodiment 1 before and after improvement: after the improvement, the yield rate has obviously increased and stabilized, which has increased by 60%, indicating that the improved thermal field has greatly improved the normal production and increased output. . See Table 1 and Table 2 for details:

[0043] Table 1: Prices

[0044] Specification

Hot field price (yuan / set)

Quartz crucible price (yuan / piece)

85 furnace

(18″)

95000

1550

85 furnace

(20″)

122000

2550

90 furnace

(twenty two")

200000

4500

[0045] Table 2: Yield after improvement

[0046] Specification

Quartz Crucible Specifications

Actual feeding amount (Kg)

85 furnace

18″

60

(18″)

85 furnace

(20″)

20″

75

90 furnace

(twenty two")

22″

120

...

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Abstract

The invention discloses a thermal field system used for manufacturing solar monocrystalline silicon, which comprises a mono-crystal furnace chamber, a graphite crucible, a support rod, a heater, a three-segment crucible, a guiding cylinder, a thermal insulation cylinder and a thermal insulation cover, wherein the thermal insulation cylinder is arranged in the mono-crystal furnace chamber, and is provided with the thermal insulation cover; the guiding cylinder is arranged in the thermal insulation cylinder and is connected with the thermal insulation cover together; the upper end port of the guiding cylinder is connected with the thermal insulation cover, while the lower end port extends into the graphite crucible; the heater is positioned between the three-segment crucible and the side wall of the thermal insulation cylinder and is arranged around the three-segment crucible; the lower end of the three-segment crucible is provided with the support rod; the inner diameter of the guiding cylinder ranges from phi 260 to phi 300mm and the height of the guiding cylinder ranges from 330 to 410mm; the inner diameter of the heater ranges from phi 620 to phi 680mm; and the inner diameter of the three-segment crucible ranges from phi 538 to phi 578mm. The thermal field system can promote thermal insulation of the furnace chamber and increase the charge amount.

Description

technical field [0001] The invention relates to the field of monocrystalline silicon manufacturing, in particular to a thermal field system suitable for large feeding of 90 furnaces. Background technique [0002] Silicon (Si) is a semiconductor element. Solar silicon cells use the characteristics of silicon to form photovoltaic effects on the surface of silicon to generate electricity. In order to prepare solar cells, it is necessary to remelt the monocrystalline silicon raw material and solidify it directionally, and then slice it into cell components. In order to realize the directional growth and solidification process of single crystal silicon, a thermal field system capable of stabilizing crystal growth is required. The thermal field system includes an upper furnace chamber, a heater located in the middle and a lower furnace chamber. The function of heat insulation, the heater is mainly to provide the thermal energy needed for heating up the thermal field system. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B15/14
Inventor 唐旭辉
Owner WINSUN NEW ENERGY
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