Centrifugal Brewing Capsule Geometry for Stable Coffee Extraction
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Solution Overview
Problem
Existing coffee brewing systems using centrifugal forces face challenges such as manual handling, inconsistent coffee quality due to dosage and freshness issues, and vibration problems with capsules of varying volumes, leading to suboptimal beverage preparation and noise.
Innovation Solution
A capsule system and device that utilizes radially symmetrical capsules with a flared design and adjustable centrifugal speeds to control brewing parameters, featuring a series of radial outlets and a filter part to ensure consistent extraction and improved crema quality, allowing for easy rotation and precise control of brewing conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If capsules of different volumes are used to deliver a wider variety of beverages, then beverage versatility is improved, but vibration and unbalance risk increases
Solution Approach 1:
The patent applies asymmetry by using radially symmetrical capsules with specific geometric features (flared design, central axis alignment) that create balanced mass distribution. This symmetry ensures that capsules of different volumes all rotate evenly around the central axis, preventing vibration while maintaining versatility for different beverage types.
Solution Approach 2:
The capsule holder is designed to position all capsules at the same radial distance from the rotation axis, creating equipotential conditions for centrifugal force application. This ensures uniform brewing conditions and balanced rotation regardless of capsule volume, eliminating vibration while supporting beverage variety.
2Device complexity
If manual handling is used for dosing and waste removal, then device complexity is reduced, but time consumption and labor increase
Solution Approach 1:
The system implements self-service through automatic capsule ejection after brewing. The capsule holder automatically expels used capsules without manual intervention, while the dosing mechanism automatically measures and dispenses the correct amount of coffee powder into each capsule, significantly reducing preparation time while maintaining simple device architecture.
Solution Approach 2:
Coffee powder is pre-dosed into capsules before insertion into the brewing device. This preliminary action of dosing eliminates the need for manual dosing during operation, reducing time consumption while keeping the brewing mechanism itself simple and straightforward.
3Manufacturing precision
If centrifugal brewing is used instead of high pressure pumps, then extraction parameter control is improved, but device complexity increases
Solution Approach 1:
The system uses dynamic centrifugal force generated by rotating the capsule holder at controlled speeds to achieve precise extraction parameter control. By varying rotation speed, the system dynamically adjusts brewing parameters (flow rate, pressure, contact time) without complex mechanical components, maintaining relatively simple device architecture while achieving superior extraction control.
Solution Approach 2:
The patent replaces the traditional high-pressure pump mechanical system with a centrifugal rotation system. Instead of using complex pumping mechanisms to force water through coffee, the system uses rotational motion to generate centrifugal force that naturally drives extraction, simplifying the brewing mechanism while improving parameter control precision.
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 provides a convenient, high-quality coffee preparation method with improved crema consistency and reduced manual handling, enabling better control over brewing parameters and freshness, while minimizing vibrations and noise.
Implementation Method 1
The capsule is rotated in a centrifugal device, applying centrifugal forces to the liquid food to urge it to pass through the ingredient(s)
Implementation Method 2
configured and dimensioned to have a perimeter and be radially symmetrical about a central axis to facilitate rotation
Data Source
AI summary
A capsule, device, system and method for preparing a liquid food or beverage. The capsule comprises an enclosure containing one or more extractable or infusible ingredients and configured and dimensioned to have a perimeter and be radially symmetrical about a central axis to facilitate rotation; and an opening arrangement that allows liquid food to leave the capsule after passing through the ingredient(s), wherein the opening arrangement is configured and positioned near or upon the perimeter of the enclosure to allow the liquid food to leave the capsule radially due to the application of the centrifugal forces. The method and device introduce liquid into the capsule to form the liquid food while applying centrifugal forces to the capsule to urge the liquid to pass through the ingredient(s).