Capsule Brewing Unit With Gravity Ejection and Guided Insertion
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Solution Overview
Problem
Existing beverage preparation machines using centrifugal extraction face challenges with complex designs that require manual handling of capsules, posing safety risks due to hot capsules and inefficiencies in insertion and ejection processes, especially when preparing multiple beverages quickly.
Innovation Solution
A beverage brewing unit with a capsule enclosing assembly featuring a first and second enclosing part that move relative to each other, allowing for vertical capsule insertion and ejection by gravity, utilizing sliding and support surfaces to guide and hold the capsule, and a motor-driven centrifugal rotating chamber for extraction, simplifying the alignment and operation of rotating parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual handling of capsules is used for insertion and removal, then the device structure can be simpler, but safety risks increase due to hot capsules and operation efficiency decreases
Solution Approach 1:
The capsule insertion assembly automatically performs capsule insertion and removal operations without requiring manual handling by the user. The system serves itself by mechanically guiding capsules into the brewing chamber and ejecting used capsules, eliminating the need for users to directly contact hot capsules while maintaining operational simplicity
Solution Approach 2:
The capsule insertion assembly acts as an intermediary mechanism between the user and the hot capsule. It provides a mechanical interface that handles the hot capsule during insertion and removal, protecting the user from direct contact with thermal hazards while ensuring precise positioning of the capsule in the brewing chamber
2Reliability
If complex cinematic mechanisms are used for capsule retrieval and ejection, then capsule handling reliability improves, but device complexity increases
Solution Approach 1:
The capsule handling function is segmented into distinct components: the capsule insertion assembly with guiding surfaces for precise positioning, and the centrifugal brewing chamber for processing. This segmentation allows each component to perform its specific function reliably without requiring complex integrated mechanisms, simplifying the overall device while maintaining reliability
Solution Approach 2:
Instead of using complex mechanisms to actively eject capsules, the system inverts the approach by using gravity and the centrifugal force from brewing to facilitate capsule removal. The capsule insertion assembly provides guiding surfaces for insertion, and the same structural elements assist in ejection by allowing gravity to return the capsule to the insertion position after brewing, eliminating the need for additional complex ejection mechanisms
3Manufacturing precision
If precise alignment of rotating parts is ensured during closure, then brewing performance improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The capsule insertion assembly performs preliminary positioning of the capsule before it enters the centrifugal brewing chamber. The guiding surfaces pre-align the capsule with the rotational axis, ensuring that when the chamber closes and rotates, the capsule is already in the correct position. This preliminary action eliminates the need for complex alignment mechanisms during closure, simplifying manufacturing while maintaining brewing precision
Solution Approach 2:
The capsule insertion assembly creates a positioning environment where the capsule naturally settles into the correct alignment position through gravity and geometric constraints. The guiding surfaces are designed so that the capsule's own weight and the geometry of the surfaces work together to achieve precise alignment without requiring additional active alignment mechanisms, reducing manufacturing complexity
4Productivity
If rapid beverage production is achieved through automated capsule handling, then productivity increases, but device complexity increases
Solution Approach 1:
The capsule insertion assembly automatically performs the complete cycle of capsule insertion, positioning, and ejection without user intervention. The system feeds capsules into the brewing chamber and removes used capsules automatically, enabling rapid sequential beverage production. This automation increases productivity while keeping the mechanism relatively simple by using gravity-assisted ejection and straightforward guiding surfaces
Solution Approach 2:
The capsule insertion assembly enables continuous operation by maintaining a ready supply of capsules and automatically replacing used ones. The guiding surfaces and ejection mechanism work continuously to insert new capsules and remove spent ones without interrupting the brewing process, ensuring uninterrupted beverage production. This continuous action increases productivity while using simple, reliable mechanical components
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 provides a safer, more efficient, and convenient method for inserting and removing capsules, reducing the need for manual handling and complex alignments, facilitating rapid beverage production while ensuring precise capsule positioning and easy beverage collection.
Implementation Method 1
rotating the receptacle at elevated speed to ensure interaction of liquid with powder while creating a gradient of pressure of liquid in the receptacle; such pressure increasing gradually from the centre towards the periphery of the receptacle
Implementation Method 2
allowing for vertical capsule insertion and ejection by gravity
Data Source
Figure 1~2
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Figure 5~6
AI summary
Beverage brewing unit (1) particularly for machines for preparing beverages from capsules by centrifugation, comprising: a casing, a capsule enclosing assembly comprising a first enclosing part (2) connected to the casing and a second enclosing part (3), moveable relative to the first enclosing part along a longitudinal direction of axis (I), preferably in translatory movement, between a capsule insertion position in which the two enclosing parts are at distance from each other with a passage (9) formed in between and a capsule enclosing position in which the capsule is enclosed between the first and second enclosing parts (2,3), wherein the first enclosing part (2) and the second enclosing part (3) define together a centrifugal rotating chamber assembly arranged for receiving the capsule and for rotating it for the extraction of the beverage; wherein the brewing unit comprises a capsule insertion assembly (32) comprising sliding surfaces (36), preferably arranged on each lateral side of the passage (9), for guiding the flange (7) of the capsule during insertion in the passage (9) and support surfaces (35), preferably transversally oriented relative to the sliding surfaces, for holding the flange of the capsule when inserted in the passage (9).