Retractable Drink Trolley Dispensing Head for Compact Aircraft Service
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Solution Overview
Problem
Existing drink dispensing systems for aircraft are not compact, prone to incorrect assignments, and cannot be safely used in existing storage spaces during take-off and landing, leading to potential overflows and passenger safety issues.
Innovation Solution
A compact serving trolley with integrated water and extract containers, a dual dispensing unit arrangement, and electronic control for centralized operation, allowing the same drinking vessel position for all drinks, powered by a battery or gas cylinder, with CO2 for carbonation, and retractable storage for easy maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate dispensing points are arranged for each drink type, then drink selection versatility is improved, but device complexity and space requirements increase
Solution Approach 1:
A single dispensing point is designed to handle multiple drink types by integrating a programmable control system that can identify different drinking vessels and adjust dispensing parameters accordingly. The control unit stores multiple beverage programs and automatically selects the appropriate program based on vessel recognition, allowing one dispensing point to serve multiple functions that previously required separate dedicated dispensing points for each drink type.
2Adaptability or versatility
If multiple dispensing units are provided for different beverage types, then drink variety is improved, but the space required and risk of incorrect assignment increase
Solution Approach 1:
Multiple dispensing units are merged into a single integrated dispensing point with a unified control system. The control unit consolidates multiple beverage programs and vessel recognition capabilities into one system, eliminating the need for physically separate dispensing units for different beverage types. This merging reduces the space occupied on the trolley while maintaining the ability to dispense various beverage types through intelligent control rather than physical multiplication of dispensing points.
3Reliability
If the drinking vessel position is changed according to drink type, then correct drink assignment is improved, but ease of operation deteriorates
Solution Approach 1:
The control unit is equipped with vessel recognition capabilities that automatically identify the type of drinking vessel placed at the dispensing point. Instead of requiring the user to manually position the vessel correctly based on the desired drink type, the system autonomously detects the vessel type and retrieves the corresponding beverage program from its memory. This self-service approach maintains high drink assignment accuracy while eliminating the need for users to understand or follow complex positioning requirements.
4Area of stationary object
If a compact arrangement is attempted with single dispensing point, then space efficiency is improved, but reliability of correct drink assignment decreases
Solution Approach 1:
The control unit incorporates feedback mechanisms including vessel recognition sensors and programmable identification systems that verify the correct beverage program is selected before dispensing. The system provides feedback to the user through indicators or displays that confirm the selected drink type matches the detected vessel type. This feedback loop ensures high reliability of drink assignment accuracy even though only a single compact dispensing point is used, eliminating the need for multiple physical dispensing units while maintaining assignment correctness.
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
Ensures operator-safe filling, maintains hygiene standards, prevents incorrect drink assignments, and allows use in aircraft storage spaces, enhancing passenger safety and operational efficiency.
Implementation Method 1
the gas cylinder contains a CO2 gas that is used for cold water carbonation and/or as a pump drive
Implementation Method 2
the gas cylinder contains a CO2 gas that is used for cold water carbonation and/or as a pump drive
Implementation Method 3
by means of pump arrangements of a dispensing unit
Data Source
Figure 1~6
Figure 7~10
Figure 11
AI summary
In the case of a trolley (1) for preparing and dispensing drinks, with individual drink selection, it is provided that the drinks are prepared from cold-water and hot-water tanks and extracts. The component parts of the drink here are fed via connecting lines, by means of pumping units, by way of a dispensing unit (6) and are filled into a drinking vessel. It is provided, for this purpose, that the dispensing unit (6) can be adjusted from an upper, operating position into a lowerable, storage position, in which it is incorporated in the construction of the trolley, beneath an upper boundary surface. The dispensing unit has a dispensing location (7) with a plurality of feed openings in a dispensing head, which is arranged above an inserted drinking vessel, wherein each feed opening is connected to, and controllable by, a separate feed line for hot water and cold water and extracts. All the feed openings of the dispensing head here are arranged in the region of the opening where the inserted drinking vessel is accommodated for filling purposes.