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A heating element of a sapphire crystal growth furnace and a crystal growth furnace

A crystal growth furnace and heating element technology, applied in the direction of seed crystal remaining in the molten liquid, single crystal growth, single crystal growth, etc. during the growth period, can solve the problems of large deformation of the heating element and easy ellipse of large-sized crystals, etc. Achieve the effect of avoiding the uniformity of the thermal field

Active Publication Date: 2020-07-24
NANJING CRYSTAL GROWTH & ENERGY EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide a new heating element suitable for large-size sapphire crystal growth furnaces for the birdcage heating elements used in current sapphire crystal growth furnaces. body

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  • A heating element of a sapphire crystal growth furnace and a crystal growth furnace
  • A heating element of a sapphire crystal growth furnace and a crystal growth furnace
  • A heating element of a sapphire crystal growth furnace and a crystal growth furnace

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Embodiment Construction

[0021] The accompanying drawings disclose the structure of a heating element of a large-scale sapphire crystal growth furnace involved in the patent of the present invention. The structure of this example of the patent of the present invention will be further described below in conjunction with the accompanying drawings.

[0022] Please combine figure 1 and figure 2 and image 3 , a specific embodiment of the heating body of the sapphire crystal growth furnace is that the heating body of the sapphire crystal growth furnace includes a plurality of metal heating rods 3, a positive water-cooled metal ring 1, a negative water-cooled metal ring 2, a metal bottom ring 4, and a positive metal connection Block 5, negative metal connection block 6, tungsten rod copper electrode 7, top tightening screw 8. The positive water-cooled metal ring 1 and the negative water-cooled metal ring 2 are coaxially placed up and down; Wherein, in this embodiment, the material of each component is s...

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Abstract

The invention discloses a heating body of a sapphire crystal growth furnace. The heating body comprises a plurality of metal heating rods, a positive water-cooling metal ring, a negative water-coolingmetal ring and a metal bottom ring. Every two adjacent metal heating rods are independently connected with the positive water-cooling metal ring and the negative water-cooling metal ring respectively, thus, currents of the adjacent metal heating rods can be in opposite directions, lateral electromagnetic forces generated by the currents can offset each other, and the problem of serious lateral deformation of the metal heating rods is avoided.

Description

technical field [0001] The invention relates to the technical field of sapphire crystal growth furnaces. Background technique [0002] Sapphire single crystal is widely used in engineering, optics, medicine and other fields due to its excellent mechanical and optical properties, as well as excellent characteristics such as high temperature resistance and corrosion resistance. With the rapid development of the sapphire industry, the application of sapphire has rapidly developed from the traditional LED industry to optical instruments, aerospace, military and civilian windows, missile fairings, wearable devices, etc. [0003] The development of the industry has higher and higher requirements for the size and quality of sapphire single crystals. As a crystal growth method of sapphire, the Kyropoulos method has the advantages of low dislocation density, large size, and small stress. The heating body structure involved in this patent is mainly suitable for large-scale sapphire ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B17/00C30B29/20
CPCC30B17/00C30B29/20
Inventor 李辉潘清跃穆童毛瑞川张熠
Owner NANJING CRYSTAL GROWTH & ENERGY EQUIP CO LTD