Magnetically driven beverage brewing and cleaning system
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Solution Overview
Problem
Traditional coffee brewing methods using static beds of coffee grounds result in inconsistent flavor, temperature gradients leading to bitter coffee, and inefficient extraction of flavor components, along with the challenge of manually removing and cleaning heavy filter trays.
Innovation Solution
A brew vessel with a magnet stirrer and conical filter, which creates a water vortex for mixing coffee grounds and water, preventing particles from clogging the filter and allowing for efficient extraction and easy cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hot water is dispensed downwardly onto a static bed of coffee grounds, then the brewing process is simple and easy to operate, but the water creates erosion-type channels through the coffee grounds resulting in inconsistent flavor extraction and significant portion of water passing through without adequately intermixing
Solution Approach 1:
The patent converts the static bed of coffee grounds into a dynamic fluidized bed by introducing upward airflow through the coffee grounds. This fluidization causes the coffee particles to move and mix continuously, eliminating channeling effects and ensuring uniform water distribution and consistent flavor extraction throughout the brewing process.
Solution Approach 2:
The patent uses pneumatic airflow introduced from below the coffee grounds to fluidize the bed. The upward air flow suspends and mobilizes the coffee particles, creating a fluid-like state that prevents channel formation and ensures uniform contact between water and coffee grounds for consistent extraction.
2Manufacturing precision
If mechanical stirring devices are used to improve intermixing between heated water and coffee grounds, then flavor consistency is enhanced, but the device complexity increases and the system becomes susceptible to break-down requiring periodic repair
Solution Approach 1:
The patent replaces mechanical stirring devices with a pneumatic fluidization system. Instead of using motors, shafts, and blades that require maintenance, the system uses controlled airflow to achieve the mixing and suspension of coffee grounds, eliminating moving parts while maintaining effective intermixing for consistent flavor extraction.
Solution Approach 2:
The fluidized bed system is self-mixing through the interaction of upward airflow and water flow. The coffee grounds automatically fluidize and circulate without external mechanical intervention, providing continuous mixing action that enhances flavor consistency while reducing system complexity and maintenance requirements.
3Device complexity
If a static bed of coffee grounds is used, then the brewing process is simple, but temperature gradients develop causing the water to become substantially reduced in temperature as it reaches the bottom regions resulting in bitter and acidic coffee
Solution Approach 1:
The patent creates a dynamic fluidized bed that continuously circulates coffee grounds and water. This constant motion prevents the formation of stable temperature gradients by ensuring continuous mixing and heat distribution throughout the brewing chamber, maintaining more uniform water temperature and preventing bitter extraction in bottom regions.
4Reliability
If heavy filter trays are used to contain coffee grounds, then filtration is effective, but manual removal and cleaning becomes labor-intensive and time-consuming
Solution Approach 1:
The patent employs a disposable filter system that is automatically loaded and discarded after use. The filter is pre-positioned in the brewing chamber, and after brewing, the entire filter with spent grounds is removed as a single unit and replaced with a fresh filter, eliminating manual cleaning time while maintaining effective filtration.
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 ensures consistent flavor extraction, reduces waste, and simplifies the cleaning process by preventing coffee grounds from sticking to the brewing chamber walls and allowing for automated removal of used coffee grounds.
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 magnet stirrer in the lower portion of the brew vessel, coupled to a motor below the magnet stirrer
Implementation Method 3
The magnet stirrer is stopped and the used coffee grounds settle to a lower portion of the brew vessel
Implementation Method 4
A conical filter in the lower portion of the brew vessel filters the coffee from the mixture of ground coffee and water
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.