Cleanroom Air Filtration Layout for Filter Replacement Without Shutdown
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In semiconductor manufacturing, replacing filters in air conditioning systems requires shutting off power to temperature control units, leading to reduced productivity and increased risk of contamination due to temperature instability and equipment exposure.
Innovation Solution
The air conditioning system incorporates separate, independent filter units that allow for filter replacement without powering down the temperature control unit, ensuring continuous air flow and temperature stability by blocking air flow between filter units during module operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If filter replacement is performed in a conventional single-filter system, then the filter can be replaced, but the temperature control unit must be shut down causing productivity loss and temperature instability
Solution Approach 1:
The air conditioning system is divided into multiple independent filter units (first filter unit, second filter unit) that can operate independently. This segmentation allows one filter to be replaced while the other continues to operate, maintaining production continuity without requiring shutdown of the temperature control unit.
2Ease of repair
If filter replacement is performed by shutting down the temperature control unit, then filter maintenance can be completed, but temperature stabilization time is required causing productivity reduction
Solution Approach 1:
The system maintains continuous operation of the temperature control unit by routing air through the non-maintained filter unit during filter replacement. This ensures uninterrupted temperature control and eliminates the need for temperature stabilization time after maintenance.
3Ease of repair
If the temperature control unit is shut down for filter replacement, then filter maintenance can be performed, but contamination risk increases due to equipment exposure
Solution Approach 1:
The system uses the second filter unit as an intermediary to continue providing filtered air to the clean room during maintenance of the first filter unit. This intermediary operation maintains air quality and reduces contamination risk while filter replacement is performed.
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
This approach enhances productivity by eliminating the need for temperature stabilization time and reduces contamination risks during filter replacement, maintaining consistent air quality and equipment conditions.
Implementation Method 1
a first filter unit (110) configured to filter purified air received at the first filter unit from the temperature control unit based on using a first filter module (101)
Data Source
AI summary
An air conditioning system includes a temperature control unit, first and second filter units, and clean room equipment. The temperature control unit discharges temperature-controlled purified air through at least one of first or second outlets. The first and second filter units each filter purified air received from the temperature control unit based on using respective first and second filter modules. The first and second filter units include separate, independent housings. The air conditioning system blocks air flow from the temperature control unit into the second filter unit during an operation of the first filter module to filter purified air received at the first filter unit from the temperature control unit, and blocks air flow from the temperature control unit into the first filter unit during an operation of the second filter module to filter purified air received at the second filter unit from the temperature control unit.