Breathing Circuit Deformable Wall for Heat Conduction
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Solution Overview
Problem
Existing breathing circuit devices face challenges in achieving good heat conduction between the breathing gas and different cooling elements, as they have varying surfaces, making adaptation difficult for effective cooling and dehumidification.
Innovation Solution
A deformable wall is introduced between the breathing gas line and the cooling element, allowing direct contact and adaptation to different surface structures, ensuring efficient heat transfer and dehumidification, with the pressure difference between the breathing gas and ambient pressure pressing the deformable wall onto the cooling element for a large-surface contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different cooling elements are used in the breathing circuit device, then the versatility and adaptability of the device is improved, but the heat conduction efficiency from the breathing gas to the cooling element deteriorates due to varying surface structures
Solution Approach 1:
The patent employs a flexible membrane wall that can deform to conform to the surface of different cooling elements. This flexible wall ensures direct contact between the breathing gas and the cooling element surface regardless of the cooling element's specific geometry or surface structure, thereby maintaining reliable heat conduction efficiency while supporting versatility.
Solution Approach 2:
The wall is designed as a deformable structure that dynamically adapts its shape based on the cooling element it contacts. This dynamic deformation allows the wall to maximize contact area with various cooling element surfaces, ensuring consistent heat transfer performance across different cooling element types.
2Stability of the object's composition
If a rigid wall is used to separate the cooling element from the breathing gas, then the structural stability is improved, but the heat conduction efficiency deteriorates due to poor contact with different cooling element surfaces
Solution Approach 1:
The patent replaces rigid walls with flexible membrane walls that can deform to match the cooling element surface. This flexible approach maintains structural integrity while ensuring intimate contact for efficient heat conduction, resolving the contradiction between stability and heat transfer efficiency.
Solution Approach 2:
The wall's mechanical properties are optimized to be flexible rather than rigid, allowing it to change its shape and contact area based on the cooling element surface it encounters. This parameter change in flexibility enables both structural stability and effective heat conduction.
3Reliability
If the cooling element surface area is increased to improve heat conduction, then the heat conduction efficiency is improved, but the device complexity increases due to the need for precise adaptation to different surfaces
Solution Approach 1:
The flexible membrane wall automatically adapts to the cooling element surface without requiring complex mechanical adjustment mechanisms. The wall's inherent flexibility allows it to conform to various surface areas and geometries, maximizing heat conduction efficiency while keeping the device structure simple.
Solution Approach 2:
The deformable wall performs self-adaptation to the cooling element surface through its inherent flexibility and the pressure differential between the breathing gas and ambient pressure. This self-adjusting mechanism eliminates the need for complex external adaptation systems, reducing device complexity while maintaining high heat conduction efficiency.
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
This solution enables the use of various cooling elements with different surface structures, ensuring effective cooling and dehumidification of the breathing gas, maintaining a physiologically tolerable breathing climate and allowing for flexible application in various fields.
Implementation Method 1
a pressure on a first side of the wall with the cooling element is lower than on a second side, so that the deformable wall is pressed onto the cooling element because of the pressure difference between the first and second sides of the deformable wall
Implementation Method 2
by means of deforming the deformable wall, direct contact can be established between the cooling element and the deformable wall
Implementation Method 3
good heat conduction from the breathing gas to the cooling element
Implementation Method 4
The expiration gas is cooled by means of the cooling element and cooled to below the dew point in the process, so that the moisture contained in the breathing gas condenses
Implementation Method 5
The carbon dioxide is removed from the expiration gas expired by the respirator user by means of a carbon dioxide absorber
Implementation Method 6
Breathing lime or alkali, which absorbs the carbon dioxide present in the expiration gas expired by the respirator user, is contained in the carbon dioxide absorber
Data Source
AI summary
A breathing circuit device has a breathing gas line for forming a closed breathing system, with a cooling device with at least one cooling element for cooling a breathing gas sent through the breathing gas line. The at least one cooling element is separated from the breathing gas with a wall and the wall is a deformable wall, so that a direct contact can be established between the at least one cooling element and the deformable wall by means of a deformation of the deformable wall.