Movable Cover for Filter Replacement in Exhaust Air Systems
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Solution Overview
Problem
Existing solutions for replacing filter elements in exhaust air filter systems in painting systems, such as those used in automotive construction, often require interrupting the air flow, leading to production disruptions and are inefficient in terms of space and technology.
Innovation Solution
A device using parallel running rails and a stable supporting structure with a cover element to allow filter element replacement without interrupting the air flow, utilizing a push chain for precise positioning and a cover element to seal the opening, ensuring continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filter elements are replaced by interrupting the airflow, then personnel can safely access and replace filters, but production and surface treatment must be stopped, resulting in loss of time and productivity
Solution Approach 1:
The exhaust air filter system is divided into multiple independent filter modules (first filter module, second filter module) that can be replaced independently. The device allows one module to be replaced while the other continues to operate, segmenting the filtration function to maintain productivity during maintenance
Solution Approach 2:
A movable cover element is introduced as an intermediary component that seals the opening during filter replacement. This cover element can be positioned to close the opening when a filter module is removed, maintaining airflow through the remaining modules while enabling safe personnel access
2Productivity
If rotating filter modules or moving filter elements are used to enable replacement during operation, then productivity is maintained, but the system requires considerable space and technological complexity
Solution Approach 1:
The cover element is designed to be movable rather than fixed, allowing it to be positioned in different states: open during normal operation and closed during filter replacement. This dynamic component enables continuous operation without requiring complex rotating mechanisms or additional space
Solution Approach 2:
The cover element is extracted as a separate, simple component rather than integrating complex moving mechanisms into the filter modules themselves. This simplifies the overall system by using a standalone sealing element that can be easily added and removed
3Productivity
If louvers, flaps, or roller shutters are used to interrupt airflow during filter replacement, then localized airflow interruption is achieved, but these moving elements can become stuck or encrusted with paint particles, compromising reliability
Solution Approach 1:
The cover element is designed as a simple, robust component that can be easily replaced if needed. Rather than using complex moving parts like flaps or roller shutters, the invention employs a straightforward sealing element that minimizes the risk of becoming stuck or encrusted with paint particles
Solution Approach 2:
Instead of using moving parts to control airflow during replacement, the invention inverts the approach by using a stationary cover element that is simply positioned to close the opening. This eliminates the problematic moving parts that can become stuck while still achieving the desired airflow control
Data Source
Figure 1a~1b
Figure 2a~2b
AI summary
Device (10) enabling filter changes in an exhaust air system belonging to a continuous process without interrupting the exhaust air flow and thus the process itself. A self-supporting structure (30) is moved along guide rails (20) in front of an opening (12) behind which a filter element (14) or filter module (16) is to be replaced, and covers almost the entire opening. Protected by this cover (24), the filter element (14) or filter module (16) can be replaced without interference from the exhaust air and without interrupting the airflow.