Aircraft Cabin Suite Air Circulation to Prevent Stagnation
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Solution Overview
Problem
The presence of private suites in aircraft passenger cabins disrupts air circulation, leading to air stagnation and temperature stratification due to the height of walls and suite doors, which existing louvers and gasper air outlets fail to adequately address.
Innovation Solution
An air circulation system comprising an inlet system, an outlet system, and a fan system is implemented, where the inlet system receives air outside the suite, the outlet system directs it into the suite, and the fan system ensures active air movement within the cabin, reducing stagnation and stratification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If suites are installed in the passenger cabin with walls covering three or more sides, then passenger privacy and comfort are improved, but air circulation is disrupted leading to air stagnation and temperature stratification
Solution Approach 1:
The air circulation system is segmented into multiple independent components: inlet system, outlet system, and fan system. The inlet system includes multiple inlet ports positioned at different locations, the outlet system has multiple outlet ports, and fans are distributed throughout the suite to create localized circulation zones, preventing stagnation while maintaining privacy
Solution Approach 2:
Air circulation ports are introduced as intermediary elements in the suite walls. These ports act as mediators between the enclosed suite space and the cabin environment, allowing air exchange without compromising the privacy-providing wall structure. The ports are positioned and sized to optimize airflow while maintaining aesthetic and functional integrity of the suite
2Ease of operation
If wall height and suite door design are increased to provide privacy, then passenger privacy is improved, but air flow obstruction increases causing temperature stratification
Solution Approach 1:
Different wall sections have different properties: solid wall portions provide privacy while localized air circulation ports provide airflow. The inlet and outlet ports are strategically positioned at specific heights and locations to create optimal airflow patterns that prevent temperature stratification in different zones of the suite
Solution Approach 2:
Air circulation is achieved by utilizing vertical dimension through strategically positioned inlet and outlet ports at different heights. This creates vertical airflow patterns that counteract temperature stratification, with cooler air entering at lower levels and warmer air exiting at higher levels, while maintaining the horizontal privacy barrier of the walls
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 air circulation within the passenger cabin, reducing stagnation and temperature stratification, thereby improving passenger comfort by ensuring a more natural and efficient airflow even with the presence of suites.
Implementation Method 1
a fan system configured to cause movement of the air into the inlet system and out of the outlet system
Data Source
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AI summary
A method and apparatus for an air circulation system. The apparatus comprises a suite (212) and a circulation unit (216). The suite (212) has walls (218) extending upward from a floor (220) of the passenger cabin (208) without reaching a ceiling (222) of the passenger cabin (208). The circulation unit (216) comprises an inlet system (226) configured to receive air (204) in the passenger cabin (208) of an aircraft in a location outside of the suite (212); an outlet system (228) configured to output the air received by the inlet system (226) into an interior of the suite (212); and a fan system (230) configured to cause a movement of the air (204) into the inlet system (226) from outside of the suite (212) and out of the outlet system (228) into the interior of the suite (212). The air (204) moves upwards in the suite (212) and over the walls (218). The air (204) moving over the walls (218) causes a desired circulation of the air within the passenger cabin (208).