Polycrystalline ingot casting furnace and side portion thermal insulation apparatus thereof

Abstract

The present invention discloses a polycrystalline ingot casting furnace side portion thermal insulation apparatus, which comprises a thermal insulation cage steel frame and a plurality of side thermal insulation plate assemblies, wherein the side thermal insulation plate assembly comprises an inner side plate and an outer side plate, the inner side plate and the outer side plate are adhered, a corn thermal insulation plate for sealing is arranged between the adjacent side edges of the two adjacent side thermal insulation plate assemblies, the width of the adhering surface of the outer side plate is larger than the width of the adhering surface of the inner side plate, the adhering surface of the outer side plate and the side surface of the inner side plate form a sealing groove, the end portion of the corn thermal insulation plate and the shape of the sealing groove are matched, and the end portion of the corn thermal insulation plate tightly contacts the sealing groove. According to the present invention, the installation adhering tightness between the outer side plate and the corn thermal insulation plate and between the inner side plate and the corn thermal insulation plate is improved, the tortuosity of the hot gas flow flowing path is increased, and the power of the hot gas flowing toward the thermal field external is effectively reduced so as to substantially reduce the heat loss, improve the thermal insulation property of the polycrystalline ingot casting furnace side portion thermal insulation apparatus, and finally improve the quality and the stability of the polycrystalline ingot. The present invention further discloses a polycrystalline ingot casting furnace comprising the side portion thermal insulation apparatus.

Description

technical field [0001] The invention relates to the field of heat preservation, in particular to a side heat preservation device of a polycrystalline ingot furnace. In addition, the present invention also relates to a polycrystalline ingot furnace comprising the above-mentioned side heat preservation device. Background technique [0002] With the increasing demand for energy and the decrease of fossil fuels, solar energy has entered people's field of vision, and has been paid more and more attention for its clean and nearly unlimited reserves. The ingot furnace is one of the most important equipment in the solar photovoltaic industry. It uses directional crystal growth solidification technology to melt high-purity silicon into polycrystalline silicon ingots, which can be sliced ​​for use in solar cells. [0003] The thermal field of the ingot furnace is a key area of ​​polycrystalline ingots, and its thermal insulation performance is directly related to whether qualified si...

AI Technical Summary

Problems solved by technology

In the prior art, there are a large number of side insulation boards, and there are many gaps after installation. The corner insulation boards only contact the inner insulation boards and the length of the overlapping side of the two is relatively short. These gaps will cause a large amount of heat loss and increase energy consumption. ; The insulation performance of the other two layers of hard felt is not strong enough, which eventually leads to a serious decline in the quality and stability of the polycrystalline ingot

Images