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Support cone for silicon seed bars

A technology of growing rods and cones, applied in the field of accommodating cones, to achieve the effect of reducing heat demand, reducing heat dissipation, and easy implementation

Inactive Publication Date: 2014-04-23
KGT GRAPHIT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Support cone for silicon seed bars
  • Support cone for silicon seed bars
  • Support cone for silicon seed bars

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Embodiment Construction

[0049] The receiving cone according to the invention for silicon growth rods 1 consists of a rotationally symmetrical base body 2 with a one-piece, centrally inserted uppermost position into the base body 2 for receiving silicon growth rods. Stick 1 ( figure 1 , figure 2 , Figure 5 , Figure 6 , Figure 7 ) clamping element 3. The base body 2 is provided with pot lid-like recesses ( Figure 6 ). The edge 5 of the base body 2 can simultaneously be inserted into a current feed in the bottom of the reactor, not shown, wherein the individual components: silicon growth rod 1, clamping element 3, base body 2 and holder for the current feed And the coupling pins 4 can be interleavedly plugged into each other in a form-locking and force-locking manner.

[0050] image 3 , Figure 4 as well as Figure 8 , Figure 9 , Figure 10 A variant of the receiving cone is shown, in which the base body 2 does not extend conically upwards to the end, but is formed flat.

[0051] To ...

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Abstract

The invention relates to a holding cone for silicon growth rods in reactors for depositing polysilicon. The aim of the invention is to devise a holding cone for silicon growth rods in which a good contacting of the inserted silicon growth rods is ensured and a distinct reduction in the heat output is achieved. This is achieved in that the holding cone comprises a rotationally symmetrical base body (2) having a one-piece clamping element (3) that can be inserted into the latter centrally at the highest position in order to hold the silicon growth rod (1), wherein the base body (2) is cut out in the manner of a pot lid in order to receive a connecting pin (4), and wherein the edge (5) thereof can be inserted into the current feedthrough in the base of the reactor, wherein the individual parts comprising silicon growth rod (1), clamping element (3), base body (2), receiving part for the current feedthrough, and connecting pin (4) can be plugged into one another in a form and force fit manner.

Description

technical field [0001] The invention relates to a containment cone for silicon growth rods in a reactor for accumulating polycrystalline silicon. Background technique [0002] Polysilicon is used in large quantities for various applications, for example for the production of solar cells. Since polysilicon of the required purity cannot be used or is not sufficiently available in nature, suitable methods must be used to produce polysilicon. [0003] For the production of polysilicon, for example, the so-called Siemens method has been developed, in which a large number of silicon growth rods, also known as thin rods, are introduced into a reactor and polysilicon is deposited on the silicon growth rods by vapor deposition there. Furthermore, a prerequisite for this is a sufficient temperature of the thin silicon rods, which must be close to the melting temperature of silicon. To achieve this, the silicon growth rod is heated to the desired temperature by means of a resistive h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/035C23C16/44C30B25/12
CPCC23C16/458C01B33/035C23C16/4418
Inventor 托尔斯滕·科恩迈尔
Owner KGT GRAPHIT TECH
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