Coffee Capsule Porous Filter Insert for Stable Extraction Flow
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Solution Overview
Problem
Existing coffee capsules designed for machines with relief and recessed elements face challenges in consistently delivering high-quality coffee due to variable extraction face opening and flow consistency, which is difficult to control and often results in inconsistent coffee quality and crema production.
Innovation Solution
A coffee capsule featuring a porous, pressure-resistant delivery wall with a three-dimensional filtering insert that provides a delayed release of coffee through backpressure, ensuring intimate interaction between coffee grounds and water, and promoting high crema production by creating shear and elongational forces, while resisting perforation against the capsule holder's relief elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a thin aluminium membrane is used for the extraction face, then the capsule can be made compatible with capsule holders having relief and recessed elements, but the opening of the membrane becomes difficult to control and flow consistency is affected
Solution Approach 1:
The patent replaces the thin aluminium membrane with a porous delivery wall made of ceramic, metal, or polymer material. This porous structure provides inherent rigidity and resistance to deformation while maintaining compatibility with capsule holders having relief and recessed elements. The porous nature allows water penetration while the structural integrity ensures consistent flow and prevents uncontrolled opening during extraction.
Solution Approach 2:
The delivery wall is constructed from composite materials combining ceramic, metal, or polymer matrices with porous structures. These composite materials achieve both mechanical strength to resist perforation against relief elements and controlled porosity to regulate water flow, thereby simultaneously achieving adaptability and flow consistency.
2Reliability
If a porous filtering insert is used to provide backpressure, then coffee extraction quality and crema production are improved, but the device complexity increases
Solution Approach 1:
The patent merges the delivery wall and filtering insert into a single integrated component. The porous delivery wall itself serves as the filtering structure, eliminating the need for separate filtering mechanisms. This integration maintains coffee extraction quality and crema production while simplifying the overall capsule structure and reducing device complexity.
Solution Approach 2:
The porous delivery wall performs multiple functions simultaneously: it acts as a structural barrier compatible with relief elements, provides backpressure for intimate water-coffee interaction, filters the coffee beverage, and promotes crema formation. This multi-functionality achieves high extraction quality without adding device complexity.
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 achieves consistent coffee extraction with high backpressure, ensuring excellent coffee quality and crema production, while maintaining structural integrity to prevent tearing and blockages, thus enhancing the overall brewing experience.
Implementation Method 1
capable of providing a delayed release of the coffee beverage by its own characteristic of backpressure offered against the coffee beverage
Implementation Method 2
the fine filtering lattice formed by the porous material that creates relatively high shear and elongational forces
Implementation Method 3
the fine filtering lattice formed by the porous material that creates relatively high shear and elongational forces
Implementation Method 4
the fine filtering lattice formed by the porous material that creates relatively high shear and elongational forces
Data Source
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AI summary
Capsule for the production of coffee, in a beverage production machine comprising a capsule holder with relief and recessed elements; said capsule comprising: - an inverted cup-shaped body forming a chamber containing ground coffee, a bottom injection wall, a sidewall; - a delivery wall which is sealed to the body; wherein the delivery wall comprises a filtering insert including at least one portion of porous material capable of providing a backpressure that is greater than the backpressure of the ground coffee in the chamber.