Rebreathing CO2 Absorber Centering Guide Plate
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Solution Overview
Problem
The existing carbon dioxide absorbers for rebreathing systems face challenges in secure connection due to manufacturing tolerances, leading to potential mismatches between the absorber and connection head, which can result in gas leaks and user uncertainty during assembly.
Innovation Solution
The carbon dioxide absorber features a guide plate with concentric gas ducts and centering grooves, along with wedge-shaped centering pins at the connection head, ensuring precise alignment and positive locking, enhancing the tightness of the gas ducts and simplifying the connection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pivotable mount with centering pin and wedge-shaped centering notch is used to connect the absorber to the connection head, then the absorber can be securely fastened, but manufacturing tolerances create clearance between the mount and connection head leading to gas duct mismatch and potential gas leaks
Solution Approach 1:
The gas ducts are pre-positioned and fixed within the absorber housing at manufacturing, eliminating the need for field alignment. The absorber is designed with predetermined duct positions that automatically align with the connection head when mounted, preventing gas leaks caused by tolerance accumulation during assembly.
Solution Approach 2:
A mounting plate is introduced as an intermediary component between the connection head and the absorber. This plate serves as a reference surface that compensates for manufacturing tolerances, ensuring that the gas ducts of both components align correctly even when individual parts have dimensional variations.
2Device complexity
If the absorber is fastened to the underside of the rebreathing system with hidden centering features, then the design is compact, but the user cannot readily recognize proper centering during assembly
Solution Approach 1:
Visual indicators such as colored markings or transparent sections are incorporated into the absorber or mounting plate to show users when the component is properly centered and sealed. This allows immediate visual confirmation of correct assembly without requiring disassembly or complex verification procedures.
Solution Approach 2:
The mounting plate serves as an intermediary that provides a visible reference surface with markings or features that indicate proper alignment. Users can visually verify that the absorber is correctly positioned during assembly, eliminating uncertainty about whether centering pins are properly engaged.
Data Source
AI summary
A carbon dioxide absorber for a rebreathing system can be connected to a connection head of the rebreathing system in a simple manner. A centering device (43, 44, 45, 46), provided in the area of a guide plate (40) of the absorber (4), can be caused to mesh with centering pins pointing in the direction of the absorber from the connection head.