System, apparatus, method and use of a capsule for preparing a beverage
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Solution Overview
Problem
Existing beverage preparation systems using capsules face limitations in the range of beverages that can be prepared due to the complexity of accommodating different capsule sizes, leading to unreliable alignment and quality deviations under pressurized conditions.
Innovation Solution
A system with a dual brew chamber setup, featuring a movable extraction plate and locking mechanism, allows for the use of both first and second exchangeable capsules of varying sizes, ensuring reliable positioning and consistent beverage quality by selectively locking the central portion of the extraction plate in the appropriate position based on the capsule size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a variable-volume brewing chamber with a moveable delimiting bottom part is used to accommodate different capsule sizes, then the adaptability of the brewing chamber is improved, but the device complexity increases and alignment reliability deteriorates
Solution Approach 1:
The brewing chamber is segmented into a first brew chamber part with a cavity and a second brew chamber part that closes around the capsule. The extraction plate is divided into a central portion and a peripheral portion that can move relative to each other, allowing independent positioning for different capsule sizes without requiring the entire chamber to be variable-volume.
Solution Approach 2:
The locking mechanism is designed to preliminarily position the central portion of the extraction plate in a first position when a first exchangeable capsule is detected, ensuring proper alignment before brewing begins. This preliminary positioning action prevents alignment issues during pressurized brewing conditions.
2Adaptability or versatility
If a moveable extraction plate is used to accommodate different capsule sizes, then the adaptability is improved, but the alignment reliability under pressurized conditions deteriorates
Solution Approach 1:
The extraction plate's central portion is made dynamically adjustable relative to the peripheral portion, allowing it to move to different positions based on the capsule type. The locking mechanism provides static stability when locked, ensuring reliable alignment under pressurized conditions while maintaining adaptability for different capsule sizes.
Solution Approach 2:
The locking mechanism provides feedback-based positioning by detecting which type of capsule is present and automatically positioning the central portion accordingly. This ensures the extraction plate is reliably aligned for the specific capsule type before brewing begins, maintaining both adaptability and reliability.
3Manufacturing precision
If a locking mechanism is added to position the extraction plate, then the beverage quality consistency is improved, but the device complexity increases
Solution Approach 1:
The locking mechanism is designed to automatically detect the capsule type and self-position the extraction plate without requiring external control systems or complex actuators. The mechanism serves itself by using the capsule's physical characteristics to trigger the appropriate positioning action, improving beverage quality consistency while minimizing added complexity.
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
The invention relates to a system for preparing beverage, including a second and first exchangeable capsule (4A) and an apparatus (2) including a first brew chamber part (18) having a cavity (24) for holding one of the first and second capsules, and a second brew chamber part (20) for closing the first brew chamber part and having an extraction plate (30) for abutting against an exit face (12A, 12B) of the hold capsule, and including a central (32) and a peripheral portion (34), the central portion (32) being axially movable relative to the peripheral portion (34) from a first position to a second position, the apparatus including a locking mechanism (86) for locking the central portion (32) in the first position when the cavity (24) holds the first capsule (4A). The invention also relates to an apparatus, a method and a capsule.