Mesh Protective Wall for Silicon Rod Reactor Opening

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Solution Overview

Problem

Conventional techniques for handling silicon rods during reactor opening fail to provide visibility from outside to inside the protective wall, making it impossible to check the falling over state of the silicon rods, thus risking contamination and safety issues during reactor opening.

Innovation Solution

A protective structure comprising a frame body surrounding the reactor's bottom plate and a vertically extending protective wall with a mesh structure, allowing for the formation of a storage space for the silicon rods, enabling safe and controlled reactor opening while monitoring the rods' state.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a non-air-permeable protective wall is provided around the reactor, then the surface of the silicon rod is prevented from being contaminated with outside air, but visibility from outside to inside the protective wall is lost, making it impossible to check the falling over state of the silicon rod

Engineering Contradiction:

Improvecontamination of silicon rod surfaceVSAvoidvisibility of silicon rod state

Core Design Contradiction:

Object-affected harmful factorsVSLoss of information

Solution Approach 1:

The protective wall is constructed with a mesh structure that has openings allowing visual observation of the silicon rod's state while maintaining sufficient protection against air contamination. The mesh size is designed to block contaminants while permitting light transmission for visibility.

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The protective wall combines mesh structure with protective coating or treatment to achieve both visibility and contamination prevention functions simultaneously, creating a composite protective system that addresses both requirements.

Inventive Principle:

Principle #40Composite materials

2Ease of operation

If the reactor cover is opened to remove silicon rods, then the silicon rods can be taken out for transfer, but the risk of silicon rods falling over and being scattered increases

Engineering Contradiction:

Improveremoval of silicon rodVSAvoidsafety of silicon rod handling

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The protective structure is installed and positioned around the reactor before the cover is opened and before silicon rod removal begins. This preliminary setup ensures that when rods are handled and removed, the protective structure is already in place to prevent falling and scattering, addressing the safety concern before the operation commences.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The protective structure acts as an intermediary barrier between the silicon rods and the external environment during the cover opening and rod removal process. It mediates the potential harm by providing a protective boundary that prevents rods from falling outside while allowing controlled access for removal operations.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP3984955B1Protective structure for silicon rod and method for manufacturing silicon rod

Publication Date: 2026.01.28 TOKUYAMA CORP

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AI summary

It is possible to carry out an operation to open a reactor while checking a falling over status of a silicon rod. A protective structure (200) includes: a first frame body (201) that is shaped so as to surround a bottom plate (101) of a reactor (100) in which a silicon rod (110) is contained; and a protective wall surface (204) that extends vertically upward from the first frame body (201) and that forms an storage space (210) for the silicon rod (110). The protective wall surface (204) has a mesh structure.