Magnetically driven beverage brewing and cleaning system
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Solution Overview
Problem
Traditional drip coffee brewers face issues with inconsistent flavor and quality due to inadequate intermixing of hot water with coffee grounds, leading to temperature gradients, channeling, and inefficient extraction of coffee oils, resulting in bitter and acidic coffee. Additionally, manual handling of filter trays poses a work safety risk and requires frequent cleaning, while cold brew methods require long brewing cycles and chemical preservatives.
Innovation Solution
A brew vessel with a magnet stirrer creating a water vortex for improved mixing, a conical reusable filter, and a butterfly valve for easy coffee grounds removal, along with a heat exchange system to maintain water temperature and a cleaning mechanism using water circulation and vortex modulation to prevent oil buildup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hot water is dispensed downwardly onto a static bed of coffee grounds, then the brewing process is simple and quick, but the intermixing is inadequate leading to inconsistent flavor and channeling
Solution Approach 1:
The patent transforms the static coffee bed into a dynamic fluidized bed by introducing upward airflow. This dynamic state allows continuous mixing and contact between water and coffee grounds, eliminating channeling and ensuring consistent extraction while maintaining rapid brewing.
Solution Approach 2:
The patent uses pneumatic airflow introduced from below the coffee bed to fluidize the grounds. This pneumatic action creates bubbles and turbulence that enhance water-coffee contact and prevent channeling, achieving both speed and consistency.
2Manufacturing precision
If mechanical stirring devices are used to improve intermixing, then flavor consistency is enhanced, but device complexity and cost increase
Solution Approach 1:
The patent replaces mechanical stirring devices with a pneumatic system that uses airflow to fluidize and mix the coffee grounds. This substitution eliminates complex mechanical components while achieving superior mixing and consistent extraction.
Solution Approach 2:
The coffee grounds themselves become the mixing medium through fluidization. The upward airflow causes the grounds to move and mix automatically without requiring external mechanical stirrers, making the system self-mixing.
3Device complexity
If a static bed of coffee grounds is used, then the brewing process is simple, but temperature gradients develop causing bitter and acidic coffee
Solution Approach 1:
The patent creates a dynamic fluidized bed that continuously circulates coffee grounds through the water flow. This dynamic mixing eliminates temperature gradients by ensuring all grounds are exposed to uniform temperature water, preventing bitter and acidic extraction.
4Device complexity
If manual handling of filter trays is required, then the system is simple, but work safety risks increase and frequent cleaning is needed
Solution Approach 1:
The patent implements automatic cleaning where water flows through the system to self-clean the filter and brewing chamber. The spent coffee grounds are automatically discharged, eliminating manual handling and associated safety risks while maintaining system simplicity.
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 solution ensures consistent flavor extraction, reduces waste, and simplifies the brewing and cleaning process, allowing for both hot and cold brew coffee production with improved safety and efficiency.
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
a heat exchange system to maintain water 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 and to provide for a cleaning system. 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. A cleaning system is used to remove unsightly coffee stains and oil films in the system after a brewing cycle.