Removable Reaction Unit Handling for Faster Epitaxial Reactor Maintenance

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Solution Overview

Problem

Existing epitaxial reactors require lengthy manual maintenance processes, exposing the reaction chamber to air and causing significant downtime due to the manual handling of removable parts, which is particularly problematic in hot wall reactors for SiC and GaN film deposition.

Innovation Solution

An automated handling machine and reaction chamber design that allows for the removal and insertion of a removable reaction unit in one piece, using releasable coupling means and engaging mechanisms with end effectors, enabling automated handling without manual intervention and reducing exposure to air.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual handling of reaction units is used, then ease of operation is maintained, but productivity deteriorates due to lengthy maintenance processes and significant reactor downtime

Engineering Contradiction:

Improvemanual handling capabilityVSAvoidreactor throughput

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The system enables automated self-service handling where the robot assembly independently performs removal and insertion of reaction units without requiring manual operator intervention, thereby maintaining operational simplicity while dramatically improving productivity

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Manual mechanical handling is replaced with an automated robot assembly that uses mechanical end effectors coupled with releasable coupling means to grasp and manipulate reaction units, transitioning from human-operated mechanical systems to automated robotic systems

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If the reaction chamber is accessed manually for maintenance, then ease of operation is maintained, but loss of time deteriorates due to complete cooling requirements and extended maintenance duration

Engineering Contradiction:

Improveaccessibility of reaction chamberVSAvoidreactor downtime

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The robot assembly is pre-positioned and ready to immediately grasp and remove reaction units when maintenance is required, eliminating the time needed for manual preparation and enabling rapid intervention without requiring complete cooling of the reactor

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The reaction unit is extracted as a complete removable assembly from the reaction chamber, allowing maintenance operations to be performed externally on the removed unit while the reactor can be quickly reconfigured or maintained without full shutdown

Inventive Principle:

Principle #2Taking out (Extraction)

3Ease of operation

If the reaction chamber is exposed to air during maintenance, then ease of operation is improved for manual access, but reliability deteriorates due to potential contamination and quality issues

Engineering Contradiction:

Improveaccessibility during maintenanceVSAvoidprocess quality

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system maintains an inert or controlled atmosphere within the reaction chamber during maintenance operations by using automated robotic handling that can operate without requiring the chamber to be open to air, thereby preventing contamination and maintaining process quality

Inventive Principle:

Principle #39Inert atmosphere (Inert environment)

Solution Approach 2:

The robot assembly acts as an intermediary between the operator and the reaction chamber, allowing maintenance to be performed on removed units externally while the chamber itself remains sealed and protected from air exposure

Inventive Principle:

Principle #24Intermediary (Mediator)

4Productivity

If automated handling system is added, then productivity is improved, but device complexity deteriorates due to space constraints and integration requirements

Engineering Contradiction:

Improvemaintenance speedVSAvoidsystem integration complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The robot assembly is designed with universal end effectors that can handle multiple types of reaction units and substrate holders through standardized coupling mechanisms, enabling a single automated system to perform multiple maintenance functions without requiring separate specialized devices

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The automated handling system is integrated within the existing reactor structure, with the robot assembly and end effectors nested within the available internal space, allowing automation to be incorporated without requiring external additions that would increase overall system complexity

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentEP4560047B1Automation system for a removable reaction unit of an epitaxial reactor

Publication Date: 2026.04.01 LPE SPA

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AI summary

The present invention relates to an automated handling machine for the handling of removable reaction units for preventive maintenance operations, where said reaction units may be used in reactors for the epitaxial deposition of semiconductor films on substrates. The present invention further relates to a removable reaction unit of a reactor adapted to cooperate with the automated handling machines hereinbefore described, and an assembly incorporating said reaction unit and said automated handling machines.