Aircraft Galley Air Supply and Return System
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Solution Overview
Problem
Aircraft galley systems are unable to efficiently cool both air-through and air-over galley carts due to incompatible air supply and return systems, leading to logistical challenges and inefficiencies in matching cart types with galley systems, which results in suboptimal use of space and increased capital investment.
Innovation Solution
A galley system with a supply duct and return duct configuration that includes both air-through and air-over supply and return vents, allowing for the use of either type of galley cart, and rearranging ducts to reduce the galley's footprint, thereby increasing passenger space by shifting rear wall components inward.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the air supply and return system is designed for air-through cooling arrangement, then air-through galley carts can be cooled efficiently, but air-over galley carts cannot be cooled
Solution Approach 1:
The air supply device is designed with dual functionality: it can supply cooled air through the air-through supply vent to cool air-through carts internally, and simultaneously supply cooled air to the cart compartment to cool air-over carts externally. This multi-functional design resolves the contradiction by enabling the same system to efficiently cool both cart types.
Solution Approach 2:
The system allows dynamic switching between cooling modes based on cart type. The air supply device can adapt its operation to provide either air-through cooling or air-over cooling, making the system flexible and versatile rather than fixed for a single cart type.
2Productivity
If the air supply and return system is designed for air-over cooling arrangement, then air-over galley carts can be cooled efficiently, but air-through galley carts cannot be cooled
Solution Approach 1:
The air supply device is designed with dual functionality: it can supply cooled air through the air-through supply vent to cool air-through carts internally, and simultaneously supply cooled air to the cart compartment to cool air-over carts externally. This multi-functional design resolves the contradiction by enabling the same system to efficiently cool both cart types.
Solution Approach 2:
The system allows dynamic switching between cooling modes based on cart type. The air supply device can adapt its operation to provide either air-through cooling or air-over cooling, making the system flexible and versatile rather than fixed for a single cart type.
3Ease of operation
If ducts are routed along the rear wall of the galley, then cooled air can be supplied to cart compartment, but galley footprint is increased
Solution Approach 1:
The supply duct and return duct are merged into a single integrated duct structure that performs both air supply and air return functions. This consolidation eliminates the need for separate duct routing along the rear wall, reducing the galley footprint while maintaining full air supply and return capability to the cart compartment.
Solution Approach 2:
The integrated duct serves multiple functions: it acts as both the supply duct for delivering cooled air and the return duct for collecting warm air. This multi-functional design reduces the overall space required for ductwork while preserving complete air circulation functionality.
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
Enables efficient cooling of both air-through and air-over galley carts, reducing the galley's footprint and increasing passenger area space by allowing either type of cart to be used, thus enhancing operational efficiency and revenue potential.
Implementation Method 1
A heat exchanger is typically provided at the top of the galley and supplies cooled air to each of the compartments or zones
Implementation Method 2
The air ducts and the supply and return devices associated with the air ducts are routed along the rear wall of the galley to the cart compartment to supply the cooled air to the cart compartment
Data Source
AI summary
An air supply and return system for a heat exchanger of a galley includes a supply duct configured to extend from the heat exchanger to a cart compartment of the galley, an air-through supply vent in flow communication with the supply duct and configured to be in flow communication with an air-through galley cart in the cart compartment, an air-over supply vent in flow communication with the supply duct and configured to be in flow communication with the cart compartment for supplying cooled airflow for an air-over galley cart in the cart compartment, and a return duct configured to extend from the cart compartment to the heat exchanger to return air to the heat exchanger. The return duct has an air return device in flow communication with the return duct and configured to be in flow communication with the cart compartment to receive airflow therefrom.