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A Rotary Non-isothermal Liquid Bridge Generator and Its Application

A non-isothermal, rotating technology, applied in the field of fluid physics, can solve problems such as difficult to control the rotation mode, temperature difference oscillation, thermal capillary convection suppression effect is not ideal, etc., to achieve the effect of optimized shape, simple structure, and comprehensive data

Active Publication Date: 2021-10-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a rotary non-isothermal liquid bridge generator to solve the problems that the existing liquid bridge generating device is difficult to control the rotation mode, liquid bridge height, temperature difference, and unsatisfactory suppression effect on oscillating thermocapillary convection. and its application

Method used

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  • A Rotary Non-isothermal Liquid Bridge Generator and Its Application
  • A Rotary Non-isothermal Liquid Bridge Generator and Its Application
  • A Rotary Non-isothermal Liquid Bridge Generator and Its Application

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specific Embodiment approach 1

[0034] Specific implementation mode one: the rotary non-isothermal liquid bridge generator of this implementation mode, its structure is as follows figure 1 As shown, it includes a liquid bridge generating device, a rotating device, a lifting device and a temperature control device; the liquid bridge generating device includes an upper plate assembly 1 and a lower plate assembly 2, the upper plate assembly 1 is a cylinder, and the upper plate assembly 1 One end is the upper plate 1-1, the other end of the upper plate assembly 1 is provided with an upper plate threaded hole 1-3, and a heating groove 1-2 is opened in the circumferential direction of the upper plate assembly 1, and its structure is as follows figure 2 As shown; the lower plate assembly 2 is a cylinder, one end of the lower plate assembly 2 is the lower plate 2-1, the other end of the lower plate assembly 2 has a lower plate threaded hole 2-3, and the circumferential direction of the lower plate assembly 2 is prov...

specific Embodiment approach 2

[0039] Embodiment 2: This embodiment is different from Embodiment 1 in that lubricating oil is coated between the heating plate 19 and the heating tank 1-2, and lubricating oil is coated between the cooling plate 20 and the cooling tank 2-2.

[0040] In this embodiment, lubricating oil is applied to prevent the heating sheet 19 and the cooling sheet 20 from following the rotation of the upper and lower disks.

specific Embodiment approach 3

[0041] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the upper plate assembly 1 and the lower plate assembly 2 are made of copper or copper alloy.

[0042] In this embodiment, the upper plate assembly 1 and the lower plate assembly 2 are made of materials with good thermal conductivity.

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Abstract

A rotary non-isothermal liquid bridge generator and its application, the invention belongs to the technical field of fluid physics, in order to solve the problem that the existing liquid bridge generating device is difficult to control the rotation mode, the height of the liquid bridge, the size of the temperature difference, and the suppression effect on the thermal capillary convection of oscillation unsatisfactory issues. The rotary non-isothermal liquid bridge generator of the present invention includes a liquid bridge generating device, a rotating device, a lifting device and a temperature control device; the liquid bridge generating device includes upper and lower plate assemblies; the upper rotating motor in the rotating device is installed on the bracket The top of the top, the lower rotating motor is located at the lower part of the bracket; the lifting device can adjust the height of the liquid bridge; the heating plate and cooling plate in the temperature control device are respectively installed in the heating tank and cooling tank of the upper and lower plate components. The liquid bridge generator of the present invention can provide multiple rotation modes and rotational speeds, effectively suppresses the oscillating thermal capillary convection inside the liquid bridge, and has significant guiding significance for the preparation of single crystals by the floating zone method.

Description

technical field [0001] The invention belongs to the technical field of fluid physics, and in particular relates to a non-isothermal liquid bridge generator and its application. Background technique [0002] The floating zone method is a common method for preparing semiconductor crystal materials. The main principle is that the feeding rod is pulled and moved in the ring heater, and the solid raw material located in the vicinity of the ring heater is heated and melted to form a melting zone. After the melting zone is far away from the heater Cool to crystallize. The quality of the grown crystal is affected by the thermocapillary convection that periodically oscillates in the melting zone, which will produce micron-scale impurity streaks, which seriously affect the quality of crystal preparation. The liquid bridge is based on the preparation of single crystal by the floating zone method as the engineering background. The upper plate is heated to simulate the ring heater, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B13/00C30B13/28C30B29/06
CPCC30B13/00C30B13/28C30B29/06
Inventor 刘国栋赵俊楠
Owner HARBIN INST OF TECH