Respiratory Container Thermal Management via Convective Ribs
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Solution Overview
Problem
Respiratory protection apparatuses face challenges in efficiently removing heat generated during oxygen regeneration and carbon dioxide absorption, particularly in mobile and stationary systems, where reaction heat needs to be effectively managed to maintain operational efficiency.
Innovation Solution
A container with a thermally coupled convective and/or radiative heat transfer device, featuring grooves for enhanced heat transfer and a supporting frame for stability, allows for efficient heat removal through convection and radiation, and can be refilled with oxygen generating or carbon dioxide absorbing substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a phase change agent is used to surround the reaction area, then heat removal is improved, but device complexity increases
Solution Approach 1:
The patent extracts the phase change agent from the reaction chamber and places it in a separate surrounding structure. This allows the phase change material to be isolated in a dedicated cooling jacket or annular space, simplifying the overall design by separating the reaction zone from the cooling zone while maintaining effective heat removal through phase change
Solution Approach 2:
The patent introduces a heat transfer medium (coolant or phase change material) as an intermediary between the reaction area and the environment. This intermediary substance absorbs heat from the reaction products and transports it away, enabling efficient thermal management without direct contact between the reaction mixture and cooling structures
2Strength
If the container wall is made thicker to improve structural stability, then strength is improved, but heat transfer efficiency deteriorates
Solution Approach 1:
The patent applies different wall thicknesses or material properties to different regions of the container. The walls may be thicker in areas requiring structural support while thinner in areas prioritized for heat transfer, or incorporate localized cooling channels and fin structures that enhance thermal performance without compromising overall structural integrity
Solution Approach 2:
The patent employs composite material structures combining materials with different thermal and mechanical properties. This allows the container to achieve both high strength and high heat transfer efficiency by strategically selecting and combining materials such as metals with high thermal conductivity for heat transfer zones and stronger materials for structural zones
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
The solution enables effective heat removal and maintains operational efficiency in respiratory protection apparatuses, ensuring the quality of breathing air and reducing thermal stress on the apparatus, while allowing for easy refilling and handling of the oxygen generating or carbon dioxide absorbing substances.
Implementation Method 1
thermally coupled in a respiratory protection apparatus, particularly in a regeneration apparatus, at least partially to a convective and/or radiating heat transfer device. The container can be cooled efficiently by convection and by heat radiation
Implementation Method 2
thermally coupled in a respiratory protection apparatus, particularly in a regeneration apparatus, at least partially to a convective and/or radiating heat transfer device. The container can be cooled efficiently by convection and by heat radiation
Implementation Method 3
In order to keep the profiling in form of grooves, free of the grainy, oxygen generating substance and/or carbon dioxide absorbing substance, the opening of the profiling that points toward the chamber is smaller than the mean grain size of the oxygen generating substance and/or the mean grain size of the carbon dioxide absorbing substance. Thus, in the profiling itself, a current can exist, which contributes to the improved heat transfer from the inside to the outside
Implementation Method 4
A particularly satisfactory heat removal is possible, if the heat transfer device comprises a means for the release of thermal energy into the environment, in particular ribs on the outside of the container. Ribs increase the area of the container, so that a larger heat radiating area for radiative heat transport and/or a larger heat exchange area for convective heat transport is/are available
Implementation Method 5
Ribs increase the area of the container, so that a larger heat radiating area for radiative heat transport and/or a larger heat exchange area for convective heat transport is/are available
Implementation Method 6
Here, it is known to surround the reaction area with a phase change agent, so that the released heat is absorbed by the phase change
Data Source
AI summary
Container for an oxygen generating and/or carbon dioxide absorbing substance in a respiratory protection apparatus, a mobile or stationary respiratory protection apparatus, and a method for producing a container for a respiratory protection apparatus. The invention relates to a container for an oxygen generating substance and/or a carbon dioxide absorbing substance in a respiratory protection apparatus, in particular, a regeneration apparatus, characterized by a chamber (1) for the substance (2), wherein the chamber (1) is thermally coupled at least partially to at least one convective and/or heat radiating heat transfer device (3, 3A, 3B).