On-Demand Iced Tea Brewing with Back Pressure Flow Control
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Solution Overview
Problem
Existing methods for brewing iced tea are inefficient and labor-intensive, particularly when producing large volumes quickly, as they often require cooling, manual addition of sweeteners and flavorings, and result in lower quality compared to traditional teabags.
Innovation Solution
A beverage brewing system that uses a concentrated beverage brewer with back pressure valves to control flow rates without pumps, combined with a mixing nozzle and additive circuits for automated dilution and mixing, allowing for high-quality iced tea production on demand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional teabags are used to brew tea, then high quality tea is produced, but it is not well suited for providing larger volumes of tea within a small amount of time
Solution Approach 1:
The system segments the brewing process into two distinct stages: first brewing highly concentrated tea, then quickly diluting it with cold water. This segmentation allows the system to achieve both high quality (through proper brewing) and high productivity (through rapid dilution), resolving the contradiction between tea quality and production volume/speed.
2Ease of operation
If tea is brewed and then cooled before adding ice, then ice melting and dilution is prevented, but the preparation process becomes labor and time intensive
Solution Approach 1:
The system performs preliminary cooling by diluting the concentrated tea with cold water immediately after brewing, before ice is added. This preliminary action with cold water (not requiring extended cooling time) lowers the tea temperature sufficiently to prevent excessive ice melting, thus maintaining both operational simplicity and preventing time loss to cooling.
3Ease of operation
If sweeteners and flavoring are added to tea, then flavor is enhanced, but manual measurement and mixing increases labor intensity
Solution Approach 1:
The system employs automated dispensing mechanisms that self-regulate the measurement and mixing of sweeteners and flavorings into the diluted tea. This self-service approach eliminates manual measurement and mixing operations, maintaining flavor customization capabilities while significantly increasing preparation speed and reducing labor intensity.
4Manufacturing precision
If pumps are used to control water flow in brewing systems, then precise flow control is achieved, but system complexity and cost increase
Solution Approach 1:
The system replaces mechanical pump-based flow control with a gravity-driven design where back pressure valves (membrane valves) control water flow. This substitution eliminates the need for complex pump mechanisms while maintaining precise flow rate control through the valve's pressure-regulating properties, thereby reducing device complexity and cost.
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 fast and efficient production of high-volume, high-quality iced tea with precise control over dilution and additive mixing, reducing waste and allowing immediate ice addition without melting, while maintaining quality comparable to traditional teabags.
Implementation Method 1
the back pressure developed within the concentrated beverage brewer may vary, and so each of the one or more back pressure valves is configured to provide a predetermined flow rate therethrough
Data Source
Figure 1
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Figure 4A~4B
AI summary
A beverage brewing system for producing on demand iced tea. The beverage brewing system may include a concentrated beverage brewer, one or more brew water circuits in communication with the concentrated beverage brewer, one or more makeup water circuits, and one or more back pressure valves in communication with the brew water circuits and the makeup water circuits.