Aircraft Airflow Interleaver for Compact Warm-Cool Air Mixing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional aircraft environmental control systems face inefficiencies in mixing warm cabin-drawn air with cool conditioned air, leading to significant temperature variations in the airflow supplied to the cabin due to spatial constraints and the large volume required for adequate mixing.
Innovation Solution
The implementation of an airflow interleaver within the mix manifold, featuring a tubular body with converging and diverging airflow guides, which guides the airflows radially to facilitate effective mixing and produce a uniform mixed airflow, improving temperature regulation within the aircraft cabin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional mix manifolds utilize induced spin and turbulence to mix warm cabin-drawn air with cool conditioned air, then mixing is achieved, but the mix manifold requires large volume which conflicts with spatial restrictions in aircraft
Solution Approach 1:
The airflow interleaver segments the two airflow streams into multiple alternating streams that interleave with each other, creating numerous mixing interfaces throughout the device. This segmentation allows effective mixing to occur in a compact volume by distributing the mixing process across multiple stream interfaces rather than requiring a single large mixing chamber.
Solution Approach 2:
The invention transitions from traditional three-dimensional turbulent mixing in a large chamber to a two-dimensional interleaved stream structure. By arranging airflow streams in alternating parallel paths, the device achieves extensive mixing contact area within a compact footprint, effectively utilizing dimensional reconfiguration to reduce volume while maintaining mixing effectiveness.
2Manufacturing precision
If traditional mix manifolds use large volume for adequate mixing, then mixing completeness improves, but the device complexity and spatial requirements increase
Solution Approach 1:
The airflow interleaver divides each airflow stream into multiple parallel sub-streams that alternate with sub-streams from the other airflow source. This segmentation creates numerous thin mixing layers between adjacent sub-streams, ensuring complete mixing throughout the cross-section without requiring a large overall device volume or complex internal geometry.
Solution Approach 2:
The interleaver structure acts as an intermediary device that systematically organizes the two airflow streams into alternating patterns. This intermediary structure facilitates thorough mixing by maintaining intimate contact between warm and cool air streams throughout the device length, achieving mixing completeness with a relatively simple linear geometry rather than complex three-dimensional manifolds.
3Temperature
If warm cabin-drawn air and cool conditioned air are mixed in traditional manifolds, then temperature regulation is achieved, but significant temperature variation remains in the supplied airflow
Solution Approach 1:
The airflow interleaver segments the warm and cool air streams into multiple alternating streams, creating numerous thin mixing interfaces. This segmentation ensures that no large pockets of unmixed air remain, as each segment is in close contact with its counterpart, promoting rapid and uniform heat transfer and temperature equalization across the entire airflow.
Solution Approach 2:
By reconfiguring the mixing process from volumetric turbulent mixing to a two-dimensional interleaved stream arrangement, the invention maximizes the surface area for heat transfer between warm and cool air streams. This dimensional change ensures thorough thermal mixing and produces uniform temperature throughout the mixed airflow with high 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 enhances the mixing efficiency of warm and cool airflows, reducing temperature variations and improving the uniformity of airflow supplied to the cabin, thereby enhancing passenger comfort and operational efficiency.
Implementation Method 1
mixing, with an airflow interleaver positioned within a mixing chamber of the mix manifold, the first airflow with the second airflow to produce a mixed airflow
Data Source
AI summary
Environmental control systems, airflow interleavers, and methods. The environmental control systems include an airflow interleaver and mix manifold comprising a mixing chamber. The airflow interleaver comprises a first airflow guide structure configured to guide a second airflow towards a central axis of the mixing chamber and a second airflow guide structure configured to guide a first airflow away from the central axis. The methods include channeling first and second airflows to the mix manifold, mixing the first and second airflows, which includes guiding the first airflow away from the central axis and guiding the second airflow towards the central axis. The airflow interleavers include a tubular body, and a plurality of converging airflow guides and a plurality of diverging airflow guides extending from the tubular body and collectively being configured to interleave first airflow streams flowing from the tubular body with second airflow streams flowing external to the tubular body.