Coffee maker with features for rapid and/or multiple extraction processes, and associated systems and methods
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Solution Overview
Problem
Existing coffee makers fail to combine low cost with high speed and efficient use of coffee beans while producing flavorful, non-bitter coffee, especially with increasing scarcity of high-quality coffee beans and environmental concerns.
Innovation Solution
A coffee-making system that utilizes multiple extractions and accelerated extractions from a single set of coffee grinds, employing a brew chamber and coffee chamber with a pressure differential device to rapidly extract coffee, allowing for the use of finer grinds and reducing bitterness, and incorporating a controller for precise control over the brewing and extraction processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If siphon brewers are used to produce flavorful coffee, then coffee quality is improved, but extraction time becomes too long for practical use
Solution Approach 1:
The system performs multiple sequential extractions (first extraction, second extraction, third extraction) rather than a single long extraction. Each extraction cycle uses fresh water to pass through the coffee grounds, systematically recovering flavor compounds in stages. This periodic approach achieves complete flavor extraction faster than traditional single-cycle methods.
Solution Approach 2:
The system maintains continuous contact between water and coffee grounds across multiple extraction cycles, maximizing the utilization of coffee flavor compounds. By repeatedly passing water through the same coffee bed, the system continuously extracts flavor without requiring prolonged single-cycle contact time, thus achieving high quality coffee efficiently.
2Manufacturing precision
If percolators are used to produce flavorful coffee, then coffee quality is improved, but coffee becomes bitter when left on high heat too long
Solution Approach 1:
The system uses multiple brief extraction cycles with fresh water instead of continuous heating. Each extraction cycle is followed by complete drainage, preventing the coffee from being subjected to prolonged high heat that causes bitterness. The periodic refresh of water ensures flavor extraction without over-extraction.
Solution Approach 2:
The system rapidly passes water through the coffee grounds during each extraction cycle and immediately drains the brewed coffee. This rushing through approach prevents the brewed coffee from remaining in contact with the coffee grounds and heat source, thereby avoiding the development of bitter flavors while still achieving complete flavor extraction across multiple cycles.
3Ease of operation
If traditional coffee makers are used, then simplicity is maintained, but efficiency of coffee bean usage is poor
Solution Approach 1:
The system maintains the same coffee grounds in the brew chamber across multiple extraction cycles, continuously extracting flavor compounds with fresh water. This approach maximizes the utilization of each coffee gram, achieving high efficiency in coffee bean usage while maintaining operational simplicity through an automated multi-cycle process.
4Manufacturing precision
If high quality coffee beans are used to meet consumer demand, then coffee quality is improved, but resource scarcity and environmental concerns worsen
Solution Approach 1:
The system recovers flavor compounds from coffee grounds through multiple sequential extractions, systematically extracting value that would otherwise be discarded. By performing first, second, and third extractions with fresh water, the system maximizes flavor recovery from each gram of coffee, reducing the total quantity of coffee beans needed to produce a given amount of high-quality coffee.
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 produces flavorful coffee with less bitterness and reduced coffee bean usage, achieving faster brewing times and more efficient coffee production while minimizing the amount of coffee grounds required, thus addressing the challenges of cost, speed, and quality.
Implementation Method 1
a pressure differential device to rapidly extract coffee
Data Source
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AI summary
Coffee makers with features for rapid and/or multiple extraction processes, and associated systems and methods. A representative system includes a brew chamber, a coffee chamber, a filter device, and an accelerated extraction device configured to accelerate a flow of coffee from the brew chamber to the coffee chamber. During a first brewing process, a controller directs a first volume of hot water into the brew chamber to form a first a volume of coffee for delivery from the brew chamber into the coffee chamber. During a second brewing process, the controller directs a second volume of hot water into the brew to form a second volume of coffee for delivery into the coffee chamber to mix with the first volume of coffee. The controller activates the accelerated extraction device to move at least one of the first and second volumes of coffee.