Aircraft Cabin Air Distribution with Momentum-Driven Recirculation
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Solution Overview
Problem
Cabin air systems in aircraft have limited capacity for filtering and distributing air, leading to challenges in maintaining air quality and reducing the risk of airborne infections, particularly due to power and space constraints, which cannot be easily addressed by increasing the size or number of fans and ducts.
Innovation Solution
An air distribution system that recirculates air between a main passenger cabin compartment and a secondary compartment, using nozzles and a contaminant removal system to draw and process air, reducing contaminants without requiring additional power or fans, by leveraging the momentum of primary airflow to enhance ventilation and using filters and ultraviolet light for purification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the size and number of fans and ducts are increased to improve air distribution capacity, then air quality and contaminant removal improve, but power consumption and system size increase beyond acceptable limits
Solution Approach 1:
The system uses the momentum of the primary airflow itself to draw cabin air through the filters and into the recirculation pathway, without requiring additional fans or power input. The primary airflow performs the work of drawing air through the system, making the air quality improvement function self-powered
Solution Approach 2:
The patent introduces a secondary airflow pathway that acts as an intermediary system. This secondary pathway uses the existing primary airflow as a driving force to move air through filters and into recirculation, mediating between the primary ventilation system and the air quality improvement goal without requiring additional power input
2Object-affected harmful factors
If filters and contaminant removal systems are added to improve air quality, then contaminant levels decrease, but system complexity and space requirements increase
Solution Approach 1:
The patent combines the contaminant removal function with the existing air distribution infrastructure. The filters are integrated into the pathways of the primary and secondary airflow systems, merging multiple functions (air distribution, air quality improvement, and recirculation) into a unified system that does not require separate dedicated components for each function
3Object-affected harmful factors
If ventilation flow per person is increased by reducing passenger count, then air quality improves, but operational efficiency and fuel consumption worsen
Solution Approach 1:
The system establishes a continuous recirculation pathway where air is constantly drawn through filters and returned to the cabin. This continuous action ensures sustained air quality improvement without requiring changes to passenger load or flight operations, maintaining operational efficiency while improving air quality
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 approach increases the apparent ventilation rate in the cabin, reduces contaminant levels, and maintains air quality without increasing power usage or system size, effectively addressing the limitations of existing cabin air systems.
Implementation Method 1
leveraging the momentum of primary airflow to enhance ventilation
Implementation Method 2
using filters and ultraviolet light for purification
Implementation Method 3
using filters and ultraviolet light for purification
Data Source
AI summary
A method and apparatus for distributing air. The apparatus includes an air distribution vent that distributes air into a compartment, wherein the distribution of air into the compartment causes compartment air from the compartment to be drawn from the compartment. The apparatus also includes a contaminant removal system, wherein compartment air drawn from the compartment is processed to remove contaminants before being distributed back into the compartment by the air distribution vent.