Electromagnetic Awning Protection Device for Semiconductor Equipment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current protection devices in semiconductor wafer fabrication factories, which rely on manual operation, cannot expand their awnings without electricity, leaving equipment vulnerable to water and dust intrusion during earthquakes when power is lost.
Innovation Solution
A protection device with an electromagnetic system that uses a power supply unit to keep an awning in a retracted state, which automatically expands when power is cut, using gravity and magnetic forces to cover equipment, and integrates an earthquake sensor to autonomously initiate this expansion during seismic events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual operation is used to expand the awning, then the equipment can be protected when electricity is available, but the awning cannot be expanded when power is lost during earthquakes
Solution Approach 1:
The electromagnetic device normally holds the awning in a retracted state, and when power is cut during an earthquake, the electromagnetic attraction disappears, allowing the awning to automatically expand under the action of springs. This inverts the traditional control logic where power is needed to activate movement, instead using power loss to trigger the protective action.
Solution Approach 2:
The system uses the earthquake-induced power loss itself as the trigger signal to activate the protective mechanism. The springs and counterweights automatically drive the awning expansion without requiring external control or manual operation, making the system self-activating in response to the hazardous condition.
2Ease of operation
If the awning is kept in a retracted state using electromagnetic force, then the equipment remains accessible, but the system requires continuous electrical power
Solution Approach 1:
The electromagnetic device operates periodically or intermittently to maintain the awning in the retracted state, rather than requiring continuous power. When power is available, it periodically engages to hold the position, and when power is lost, the mechanical spring system takes over to enable automatic expansion.
Solution Approach 2:
Springs and counterweights are used to balance the electromagnetic holding force, reducing the continuous energy requirement. The mechanical energy storage elements compensate for the electromagnetic force, allowing the system to maintain position with minimal power while enabling automatic movement when power is lost.
3Reliability
If the awning is automatically expanded using springs and counterweights, then the system works without power, but the structure becomes more complex
Solution Approach 1:
The awning structure is divided into multiple independent segments or panels that can expand sequentially or independently. Each segment has its own spring and counterweight mechanism, allowing the system to achieve automatic expansion without requiring a single complex centralized mechanism.
Solution Approach 2:
The system transitions from a static electromagnetic holding mechanism to a dynamic mechanical expansion system. The springs and counterweights are designed to engage only when needed (during power loss), allowing the structure to remain simple during normal operation and become protective only when required.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures equipment protection from water and dust intrusion by automatically expanding the awning during earthquakes, meeting fire safety regulations and preventing damage, even in the absence of human operation.
Implementation Method 1
The power supply unit provides electrical power to the electromagnetic device, so that the electromagnetic device attracts the roller, and the awning remains in the received state
Implementation Method 2
When the power supply unit stops providing electrical power to the electromagnetic device, the roller moves along the supporting member due to gravity, and the awning is expanded to cover the equipment
Data Source
AI summary
A protection device is provided, including a first fixed member, a second fixed member, a supporting member, a roller, an awning, an electromagnetic device, and a power supply unit. The supporting member connects to the first and second fixed members. The roller is movably disposed on the supporting member. The power supply unit provides electrical power to the electromagnetic device, so that the electromagnetic device attracts the roller, and the awning remains in a received state. When the power supply unit stops providing electrical power to the electromagnetic device, the roller moves along the supporting member, and the awning is expanded to cover the equipment.