Brewing Chamber Perforation Positioning for Capsule Extraction Quality

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Solution Overview

Problem

Existing brewing devices for portion capsules suffer from inadequate interaction between the beverage substance and extraction liquid, leading to poor taste quality and safety concerns due to sharp perforating means.

Innovation Solution

A brewing device design featuring a first brewing chamber element with perforation elements arranged along the gravitational field and a second brewing chamber element with a piercing tip, forming a hermetically sealed brewing chamber for improved liquid flow and user safety, with the perforation points aligned to maximize interaction and minimize risk of injury.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If uniform perforation of the portion capsule is used in the area of the injection arrangement, then the capsule is flowed through by extraction liquid over the shortest path, but the interaction between beverage substance and extraction liquid is insufficient and taste quality deteriorates

Engineering Contradiction:
Improveextraction speedVSAvoidtaste quality
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The patent applies local quality by positioning perforation means at specific locations (peripheral region away from axial center) rather than uniform distribution. This creates localized flow paths that force extraction liquid to traverse through more of the beverage substance, improving interaction and taste quality while maintaining extraction efficiency

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent introduces a radial dimension to perforation placement by positioning perforation means in the peripheral region at a distance from the axial center. This dimensional change transforms the extraction path from a direct axial flow to a more complex three-dimensional path through the beverage substance, enhancing interaction without sacrificing extraction speed

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If razor-sharp perforating means are used for capsule perforation, then effective liquid flow through the capsule is achieved, but user safety is compromised due to potential contact through the loading opening

Engineering Contradiction:
Improveperforation effectivenessVSAvoiduser injury risk
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by positioning perforation means in the peripheral region of the capsule rather than at the axial center. This spatial differentiation allows the perforation function to be performed effectively while the sharp elements are located in a region less accessible to users during loading, reducing injury risk

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent uses the peripheral positioning of perforation means as an intermediary solution that mediates between the need for effective perforation and user safety. By placing the sharp elements in the peripheral region at a distance from the axial center, the system achieves perforation effectiveness while creating a safety buffer zone that reduces direct user contact risk

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Enhances the interaction between the beverage substance and extraction liquid, improving the taste quality of the extracted drink while ensuring safe and error-free capsule insertion and operation.

Implementation Method 1

the extraction liquid flows through the beverage substance arranged in the portion capsule and a beverage extract is formed

Methodology Applied
Scientific EffectExtraction: Liquid-Liquid Extraction

Implementation Method 2

the first brewing chamber element (3) relative to the second brewing chamber element (4) along an axial direction (6) between a loading position (17) and an extraction position (11) movable is

Methodology Applied
Scientific EffectMechanical movement:

Data Source

PatentEP2575564B1Brewing apparatus and method for extracting a portion capsule
Publication Date: 2022.05.25 EUGSTER FRISMAG AG
  • EP2575564B1 patent drawingFigure 1a~1b
  • EP2575564B1 patent drawingFigure 1c~1d
  • EP2575564B1 patent drawingFigure 1e~1f

AI summary

The present invention relates to a brewing apparatus for extracting a portion capsule, having a first brewing chamber element and a second brewing chamber element, wherein the first and/or the second brewing chamber element can be moved in an axial direction between a loading position, in which the first and the second brewing chamber element are spaced apart from each other, and an extraction position, in which the first and the second brewing chamber elements form a substantially closed brewing chamber, and wherein the first brewing chamber element has at least one first perforation means for perforating the portion capsule, which perforation means is arranged along a gravitational field of the Earth below a horizontal plane extending substantially at right angles to the gravitational field and centrally through the brewing chamber.