Vacuum Coffee Brewing System Temperature Control
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Solution Overview
Problem
Existing coffee brewing methods struggle to produce flavorful coffee at commercially suitable rates while maintaining target temperature levels, as they often result in rapid cooling due to excessive surface area exposure during vacuum extraction.
Innovation Solution
A beverage brewing system that controls vacuum flow rates to maintain a continuous, cohesive flow of coffee from the brew chamber to the collection chamber, using flow control devices and vacuum sources to minimize heat loss and ensure high serving temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If vacuum extraction is used to separate brewed coffee from grounds, then coffee flavor quality is improved, but coffee temperature drops rapidly due to excessive surface area exposure
Solution Approach 1:
The patent applies local quality by creating a controlled vacuum environment specifically in the extraction chamber while maintaining different pressure conditions in other parts of the system. The vacuum is applied locally to the coffee grounds during extraction, allowing flavor quality improvement without causing system-wide temperature drops. This localized approach enables precise control over where the vacuum effect occurs, preventing excessive surface area exposure and heat loss.
Solution Approach 2:
The system dynamically adjusts vacuum pressure levels during the brewing process. The vacuum pressure is not maintained at a constant high level but is modulated to optimize both extraction quality and temperature maintenance. By dynamically controlling the vacuum pressure, the system can enhance flavor extraction when needed while minimizing temperature loss, resolving the contradiction between quality improvement and temperature maintenance.
2Manufacturing precision
If traditional siphon brewers are used for vacuum extraction, then flavorful coffee is produced, but extraction process becomes too long for commercial use
Solution Approach 1:
The patent changes key parameters of the vacuum extraction process, including vacuum pressure levels, water temperature, and flow rates, to achieve faster extraction times while maintaining flavor quality. By optimizing these parameters, the system reduces extraction time from the lengthy process required by traditional siphon brewers to a commercially viable duration, resolving the contradiction between quality and productivity.
Solution Approach 2:
The system performs preliminary actions by pre-heating water, pre-moistening coffee grounds, and establishing optimal vacuum conditions before the main extraction process begins. This preliminary preparation allows the actual extraction to proceed more quickly and efficiently, reducing overall brew time while maintaining high flavor quality, thus addressing the productivity constraint for commercial operations.
3Productivity
If vacuum flow rate is increased to improve extraction efficiency, then brewing speed is improved, but heat loss increases and temperature control becomes difficult
Solution Approach 1:
The patent incorporates feedback mechanisms that continuously monitor temperature and vacuum pressure during the brewing process. Based on this feedback, the system automatically adjusts vacuum flow rate and other parameters to maintain optimal temperature while maximizing brewing speed. This closed-loop control resolves the contradiction by enabling high-speed extraction without excessive heat loss, as the system responds in real-time to prevent energy loss.
Solution Approach 2:
The system maintains continuous vacuum flow throughout the brewing process, ensuring that the extraction action is uninterrupted and efficient. This continuous action, combined with thermal insulation and controlled vacuum pressure, prevents heat loss while maintaining high brewing speed. The uninterrupted vacuum flow ensures consistent extraction efficiency without the need for intermittent high-power vacuum pulses that would cause temperature drops.
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 system effectively maintains coffee temperature within desired ranges (100°F to 175°F) by reducing heat loss through controlled vacuum flow, allowing for efficient extraction and drying of coffee grounds, suitable for commercial operations.
Implementation Method 1
a vacuum source in fluid communication with the beverage chamber to draw the brewed beverage from the brew chamber through the beverage flow path into the beverage chamber
Implementation Method 2
controls the vacuum applied to the beverage chamber... controlling the flow rate of coffee and/or another brewed/extracted beverage
Data Source
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AI summary
Temperature control for extracted beverages, including coffee, via controlled vacuum, and associated systems and methods are disclosed. A representative system includes a brew chamber, a beverage chamber in fluid communication with the brew chamber, a vacuum source in fluid communication with the beverage chamber, and a flow control device positioned to vary the force applied by the vacuum chamber on the brew chamber via the beverage chamber.