Double water circuit cooling zone melting induction coil

Abstract

The present invention relates to a double water circuit cooling zone melting induction coil, which comprises a single-turn coil flat plate, wherein the single-turn coil flat plate comprises a coil flow collection ring and a coil inside-outside cooling water pipe, the inside-outside cooling water pipe surrounds and is welded on the periphery of the flow collection ring, the upper surface of the flow collection ring is provided with three steps, the diameters of the circles on which the three steps exist from the first step on the outer side to the third step on the inner side are progressively decreased, and the inclined surface positioned on the flow collection ring inner circle lower edge and obtained by connecting with the lower surface of the single-turn coil flat plate and the horizontal plane form a certain inclination angle. The double water circuit cooling zone melting induction coil has the following beneficial effects that: the growth of the large diameter float zone silicon crystal is easily achieved, the uniform distribution degree of the inside-silicon thermal field can be increased, and the crystal forming stability of the silicon single crystal can be increased.

Description

technical field [0001] The invention relates to an induction coil, in particular to a melting induction coil in a double water channel cooling zone. Background technique [0002] In recent years, the development of various crystal materials, especially high-tech value-added materials represented by monocrystalline silicon and related high-tech industries, has become the pillar of the contemporary information technology industry, and has made the information industry the fastest growing in the global economic development. Fast leading industry. As a crystal with great potential and a basically complete lattice structure, single crystal silicon has different properties in different directions. When the molten elemental silicon is solidified, the silicon atoms are arranged in a diamond lattice to form many crystal nuclei. The single crystal silicon has a diamond lattice, the crystal is hard and brittle, has a metallic luster, and can conduct electricity, but its conductivity i...

AI Technical Summary

Problems solved by technology

Existing products are not effective for melting induction coils in silicon single crystal double water cooling zone, which makes the distribution of thermal field in silicon not uniform enough, and there are many instabilities in the crystallization of silicon single crystal, especially the unreasonable structure of the upper surface of the coil

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