Aircraft Galley Refrigerator-Oven Integration for Space and Weight Limits
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Solution Overview
Problem
Current aircraft galley systems require separate space for refrigeration and heating units, leading to inefficiencies in space and weight usage, especially on long-range flights with increased demand for both hot and cold food and beverage service.
Innovation Solution
A combined refrigerator-oven system with a thermally insulated compartment featuring a steam heating device and a refrigeration device that can actively or passively cool, using temperature sensors and a regulating valve to control temperatures, allowing for both heating and cooling functions in a single unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate refrigeration and heating units are used in aircraft galley systems, then each unit can be optimized for its specific function, but the total space and weight requirements increase significantly
Solution Approach 1:
The patent combines separate refrigeration and heating units into a single integrated refrigerator-oven combination. The housing contains both a refrigeration device with evaporator and a heating device with steam generator, allowing both functions to share the same structural space and weight budget, thereby reducing the overall system weight while maintaining functional capabilities.
Solution Approach 2:
The integrated unit provides multiple functions within a single device: refrigeration for food and beverage storage, heating for meal preparation, and steam generation for heating. This multi-functionality eliminates the need for separate dedicated units, reducing total weight and space requirements while maintaining reliable performance for each function.
2Reliability
If separate refrigeration and heating units are installed in aircraft galleys, then each unit can operate independently, but the space required in the galley increases
Solution Approach 1:
The patent merges refrigeration and heating functions into a single housing unit, consolidating the space required for both functions. The internal layout places the refrigeration device and heating device in different zones within the same housing, allowing operational independence while reducing the total galley footprint.
Solution Approach 2:
The heating device and refrigeration device are nested within the same housing structure. The steam generator and evaporator are positioned in separate compartments within the housing, allowing one function to be contained within the overall structure of the other, thereby maximizing space utilization and reducing the external dimensions of the unit.
3Adaptability or versatility
If multiple separate food service devices are used on long-range flights, then all food and beverage needs can be met, but the weight and space consumption increases dramatically
Solution Approach 1:
The integrated unit provides universal food service capabilities including refrigeration for cold storage, heating for hot meal preparation, and steam generation for various heating applications. This single multi-functional unit replaces multiple separate devices, reducing total weight while maintaining the ability to meet all food and beverage service needs on long-range flights.
Solution Approach 2:
The patent combines the functionality of separate refrigeration units, heating units, and steam generators into a single integrated system. By merging these functions share a common housing, control systems, and structural support, dramatically reducing the total weight and space required while maintaining full adaptability for various food service operations.
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
The solution enables efficient hot and cold food and beverage service while conserving space and weight on aircraft, by integrating heating and cooling functions into a single compact unit, enhancing operational efficiency and reducing the need for separate devices.
Implementation Method 1
The heating device comprises a steam heating device including a steam injection valve disposed in said thermally insulated compartment for providing heated steam into the compartment for heating at least a portion of an interior of said compartment
Implementation Method 2
a housing defining a thermally insulated compartment
Implementation Method 3
a chilled fluid is supplied from a remote source, and is piped into a heat exchanger mounted to the compartment
Data Source
Figure 1~2
Figure 3~4
AI summary
The refrigerator-oven combination for an aircraft galley food service system includes a housing with a thermally insulated compartment, a heating device for heating the compartment in a heating a heating mode, and a refrigeration device for cooling the compartment in a refrigerator mode.