Extraction Capsule Base Plate Movement for Consistent Beverage Quality
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Solution Overview
Problem
The pressure-dependent opening of sealing foils in extraction capsules leads to inconsistent beverage quality, as the bursting foil or plate may not open fully, affecting the volume and flavor of coffee or tea beverages.
Innovation Solution
An extraction capsule design featuring a base plate that can move mechanically from a first to a second position, independent of internal pressure, with a U-shaped articulation point allowing reliable and consistent opening of the sealing film, optionally with an insert capsule and separate perforation means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If pressure-dependent sealing film rupture is used, then the capsule structure is simple, but the beverage quality becomes inconsistent
Solution Approach 1:
The base plate is designed to move from a first position (sealed state) to a second position (open state) through mechanical actuation rather than pressure-dependent rupture. This dynamic mechanism ensures consistent opening regardless of pressure variations, resolving the reliability issue while maintaining structural simplicity
Solution Approach 2:
The sealing film is pre-positioned on the console above the extraction-side bottom, and the base plate is pre-configured with breaking points for the sealing film. This preliminary arrangement ensures that the sealing film opens reliably at the predetermined location when the base plate moves, eliminating inconsistencies in beverage quality
2Ease of manufacture
If rupture film or plate is used, then the sealing function is achieved, but the opening extent varies leading to flavor inconsistency
Solution Approach 1:
The base plate is segmented with predetermined breaking points that define exactly where the sealing film should break. This segmentation ensures that the sealing film opens to a precise and consistent extent every time, eliminating variability in beverage flavor while maintaining ease of manufacture
Solution Approach 2:
The base plate acts as an intermediary mechanism between the sealing film and the beverage extraction process. By moving the base plate mechanically rather than relying on pressure to rupture the sealing film, the system achieves precise control over the opening extent, ensuring manufacturing precision
3Loss of time
If time-controlled pump is used, then the extraction time is controlled, but the beverage volume varies with sealing film opening extent
Solution Approach 1:
The dynamic base plate mechanism ensures that the sealing film opens to a consistent extent every time, decoupling the extraction volume from the opening variability. This allows the time-controlled pump to deliver consistent beverage volumes without being affected by variations in sealing film rupture extent
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
Ensures consistent beverage quality by reliably opening the sealing film regardless of pressure, allowing for adjustable extraction and mixing of liquids, and simplifies the brewing process with lower injection pressure requirements.
Implementation Method 1
a U-shaped articulation point (21) between these two areas
Data Source
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AI summary
In the case of an extraction capsule, which contains a substance for the preparation of a liquid foodstuff, with a base on the extraction side with an outlet opening and a jacket wall adjoining the base with a terminal flange pointing radially outwards and with a filling opening on the injection side, which is closed with a sealing film, it is provided that the base on the extraction side has a peripheral edge area that cannot be changed in position and a peripheral articulation point (21) which adjoins the annular edge area on the center side and adjoins a base plate which, before use, lies in a first position in a plane that is further from the plane in which the sealing film (7) lies at the filling opening (4) is removed as the position-invariable peripheral edge area, and that perforation means (24) are arranged on or on the side of the base plate facing towards the inside of the capsule, with the base plate being separated from the first-mentioned position into a second position, which can be brought closer to the film sealing the filling opening, with the extraction capsule also having a console molded onto the casing wall, on which an extraction-side sealing film to be perforated rests directly and/or indirectly, through which the perforation means penetrate through in the second layer.