Magnetically driven beverage brewing system and method
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Solution Overview
Problem
Traditional coffee brewing methods using static beds of coffee grounds result in temperature gradients, water channeling, and inefficient flavor extraction, leading to bitter and acidic coffee, as well as safety issues due to the need for frequent filter tray removal and refilling.
Innovation Solution
A brew vessel with a magnet stirrer creating a water vortex for mixing coffee grounds and water, a reusable conical filter for separation, and a butterfly valve for easy removal of used coffee grounds, along with a heat exchange system to maintain temperature and prevent filter clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heated water is passed through a static bed of coffee grounds, then coffee is brewed and collected, but the water temperature drops significantly as it passes through the grounds, creating a temperature gradient that negatively affects coffee quality
Solution Approach 1:
The patent transforms the static coffee grounds bed into a dynamic fluidized bed by introducing upward airflow. This dynamic state allows continuous mixing and movement of coffee grounds, ensuring uniform temperature distribution and consistent extraction quality throughout the brewing process, eliminating the temperature gradient problem inherent in static beds
2Productivity
If water passes through a static bed of coffee grounds, then coffee is extracted, but water channels form that cause water to pass through the same parts of the grounds repeatedly, extracting unpleasant chemicals and wasting desirable flavor components
Solution Approach 1:
The fluidized bed creates continuous random movement and redistribution of coffee grounds particles, preventing the formation of fixed water channels. Each pass of water encounters different ground configurations, ensuring uniform extraction of desirable flavors while avoiding repeated extraction of bitter compounds from the same locations
Solution Approach 2:
The system uses pneumatic airflow introduced from below to fluidize the coffee grounds bed. This upward air flow suspends and continuously mixes the grounds, creating a dynamic environment that prevents channeling and ensures uniform water distribution and extraction across all grounds particles
3Ease of operation
If filter trays are positioned near the top of brewing machines to allow gravity to pass water through the grounds, then coffee dispensing is at a convenient height, but workers must constantly reach up to lift, remove and refill filter trays, creating work safety issues
Solution Approach 1:
The patent inverts the traditional filter tray position from the top to the bottom of the brewing machine. The fluidized bed chamber and collection receptacle are positioned at the bottom, allowing workers to access and refill coffee grounds from a low, safe position while gravity still effectively drives water downward through the grounds for brewing
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
This method ensures consistent flavor extraction, reduces waste, improves coffee quality, and enhances safety by allowing for efficient coffee production and easy cleaning, while also enabling the production of both hot and cold brew coffee.
Implementation Method 1
A magnet stirrer in the lower portion of the brew vessel, coupled to a motor below the magnet stirrer, creates a water vortex for mixing the ground coffee and water
Implementation Method 2
along with a heat exchange system to maintain temperature
Data Source
AI summary
A coffee brewing system includes a brew vessel adapted to receive water and ground coffee to produce and store a brewed beverage. The brew vessel includes a filter and a magnet stirrer in the lower portion of the brew vessel. The magnet stirrer creates a water vortex for brewing the coffee. The used coffee grounds are allowed to settle on the filter creating a bed of used coffee grounds and the coffee is then filtered through both the bed of used coffee grounds and the filter and collected in a coffee storage container.