Centrifugal Coffee Capsule Extraction With Pressure-Formed Outlets
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Solution Overview
Problem
Existing coffee preparation systems using centrifugal forces lack control over extraction parameters, leading to inconsistent coffee quality due to manual dosing and freshness issues, and require intensive manual handling, resulting in time-consuming and inefficient brewing processes.
Innovation Solution
A system comprising a device with a removable capsule and a water injection head that uses centrifugal forces to create controlled liquid delivery outlets through piercing elements, allowing for precise control over extraction time and pressure, improving coffee concentration and cream quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual dosing of coffee powder is used in non-removable receptacles, then device complexity is reduced, but manufacturing precision of dosage and freshness control deteriorate
Solution Approach 1:
The system divides the coffee preparation system into separate components: a reusable brewing device and disposable pre-dosed capsules. The capsule contains pre-measured coffee powder in a sealed container, separating the dosing function from the brewing device. This allows the device to remain simple while achieving precise dosage control through factory-prepared capsules.
Solution Approach 2:
Coffee powder is pre-dosed and pre-packaged into capsules before use. The capsule is prepared in advance with the exact amount of coffee needed, eliminating the need for manual dosing during operation. This preliminary action ensures consistent dosage precision while keeping the brewing device simple.
2Productivity
If intensive manual handling is used for removable holders and refilling, then ease of operation deteriorates, but productivity may improve through reusability
Solution Approach 1:
The system employs disposable single-use capsules that are discarded after one brewing cycle. Each capsule is pre-filled with coffee powder and sealed to preserve freshness. After use, the entire capsule is discarded and replaced with a new one, eliminating the need for cleaning, refilling, and complex manual handling of reusable components.
3Ease of operation
If centrifugal brewing with screen separation is used, then ease of operation is maintained, but manufacturing precision of extraction parameters deteriorates
Solution Approach 1:
The system controls extraction parameters by varying centrifugal force through different rotation speeds. The device can operate at multiple speed levels, allowing precise control over water flow rate through the coffee bed and extraction time. This maintains ease of operation with simple centrifugal brewing while achieving precise extraction control through parameter variation.
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 and efficient coffee preparation method with improved in-cup quality by controlling key attributes like coffee concentration and cream, offering consistent results and reduced manual handling.
Implementation Method 1
by passing water through the substance in the capsule, comprising a water injector, as part of a water injection head, arranged for introducing water in the capsule; means for driving the capsule holder in centrifugation around an axis of rotation
Implementation Method 2
means for driving the capsule holder in centrifugation around an axis of rotation; the opening means are configured to create at least one liquid delivery outlet in the capsule at least partially in response to the centrifugal forces of liquid which exert in the capsule
Data Source
AI summary
A method for preparing a food liquid from a food substance contained in a single-use capsule. The method includes passing water through the substance, driving the capsule in centrifugal rotation while introducing water into the center of capsule, passing water through the substance to form a food liquid, and piercing at least one liquid delivery outlet in the capsule at least partially by the effect of the pressure rising in the capsule as a result of the centrifugation.