Breathing Apparatus Filter Assembly with Status Indicator
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Solution Overview
Problem
Existing breathing apparatuses face difficulties in confirming the presence, type, and blockage status of filter elements, leading to inconvenience and potential health risks due to the lack of visibility and timely detection of filter conditions.
Innovation Solution
A filter assembly with a frame, cover, and indicator system that visually or electronically confirms the presence and type of the filter element, and detects blockage levels, using tabs, sensors, and wireless communication for real-time monitoring and alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filter element is installed in the filter assembly, then the breathing apparatus can provide filtered air, but the user cannot easily view or determine if the filter element is present or suitable
Solution Approach 1:
The patent employs color-coded filter elements and corresponding indicator lights to communicate filter status and suitability. Different colors indicate different filter types or conditions, allowing users to quickly verify filter installation and compatibility without complex inspection procedures.
Solution Approach 2:
The patent introduces an intermediary indicator system (visual indicators, lights, or display elements) that mediates between the filter element and the user. This intermediary provides clear feedback about filter presence and suitability, eliminating the need for direct visual inspection of the filter element itself.
2Productivity
If the filter element is installed without verification, then the apparatus can operate, but the user cannot confirm if the correct filter type is installed
Solution Approach 1:
The patent implements a feedback mechanism where the system provides real-time information to the user about the installed filter element. Through visual indicators, display screens, or communication interfaces, the system confirms filter presence, type, and suitability, ensuring users have complete information while the apparatus operates.
Solution Approach 2:
The patent performs preliminary verification of filter element suitability before allowing apparatus operation. The system checks filter compatibility and communicates this information to the user in advance, preventing operation with incorrect filters and eliminating the need for post-installation verification.
3Device complexity
If the filter blocked alarm is activated only when fully blocked, then the alarm is simple, but the breathing apparatus becomes unusable shortly after fitting
Solution Approach 1:
The patent performs preliminary assessment of filter blockage status and provides early warning before complete blockage occurs. The system monitors filter condition and alerts users in advance, allowing proactive filter replacement while the apparatus remains fully functional.
Solution Approach 2:
The patent implements continuous feedback about filter blockage status through visual indicators or display elements. This feedback provides real-time information about filter condition, enabling users to monitor and maintain optimal performance without waiting for complete blockage or complex alarm systems.
Data Source
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AI summary
A filter assembly for a breathing apparatus, such as a powered air purifying respirator. The filter assembly includes a frame for receiving and retaining a filter element, a cover connected to the frame and dimensioned to cover the aperture, a filter element, and an indicator for indicating when the filter element is retained in the filter frame and the cover is arranged across the aperture. A powered breathing apparatus including the filter assembly is also disclosed.