Rebreather CO2 Absorber Visual Level Indicator
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Solution Overview
Problem
Existing closed-circuit breathing apparatuses lack a simple and reliable method to visually detect the filling level of the carbon dioxide absorber (breathing lime) without disassembling the apparatus.
Innovation Solution
A carbon dioxide absorber design featuring a housing with a window element and a display element that moves in response to the filling level of the carbon dioxide-absorbing material, allowing visual inspection from outside the apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the apparatus is designed to allow visual inspection of the filling level, then the ease of operation is improved, but the device complexity increases due to additional components like window elements and display elements
Solution Approach 1:
The patent introduces a window element and display element as intermediary components that mediate between the internal filling level and the external user. The window element provides optical access to the interior, while the display element translates the filling level into a visible indicator, allowing inspection without direct observation of the material itself
Solution Approach 2:
The patent replaces direct mechanical inspection (opening the apparatus) with an optical display system. The display element's position, visible through the window element, substitutes for physical access to the filling level, eliminating the need to disassemble the apparatus for inspection
2Reliability
If the apparatus remains closed during operation, then the reliability is improved by protecting internal components, but the difficulty of detecting and measuring the filling level increases
Solution Approach 1:
The window element acts as an intermediary that allows optical detection through the closed housing. It transmits light from the display element to the external observer while maintaining the sealed integrity of the apparatus, thus enabling measurement without compromising reliability
Solution Approach 2:
The display element utilizes optical properties (such as color or reflectivity changes) to indicate the filling level. This allows the internal state to be detected externally through the window element without opening the apparatus, solving the detection difficulty while maintaining the closed protective structure
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
Enables users to easily and reliably determine the filling level of the carbon dioxide absorber without opening the apparatus, ensuring timely replacement and maintaining reliable operation.
Implementation Method 1
a material is arranged, which absorbs at least some of the carbon dioxide contained in a breathing gas stream sent through the material
Data Source
AI summary
A carbon dioxide absorber (1) and a closed-circuit breathing apparatus (2) with the carbon dioxide absorber are based on the carbon dioxide absorber having an inlet (3) and an outlet (4) gas-tight connectable by a flow duct (5), in which a material (6) is arranged, which absorbs some carbon dioxide contained in the breathing gas stream sent through the material. The flow duct (5) is enclosed in some areas by a housing (7), in which a window element (8) is arranged. A display element (9) arranged movably in the flow duct (5) is visible through the window element from outside of the housing and/or through which window element the radiation reflected by the display element (9) exits to the outside. A distance between the window element (8) and the display element (9) varies as a function of the quantity of carbon dioxide-absorbing material arranged in the flow duct (5).