System and method for preparing a beverage

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Solution Overview

Problem

The risk of damage to brewing devices from accidental use of non-system portion capsules, which can have a rigid distribution device or filter element, is not adequately addressed in existing portion-capsule brewing systems, leading to potential damage when incompatible capsules are used.

Innovation Solution

A system that includes an identifier detector, such as a resistance measuring device or induction measuring device, to verify if a portion capsule is system-specific before operation, preventing the brewing device from being used with non-system capsules by ensuring the capsule has a verifiable identifier, and automatically ejecting or preventing the use of incompatible capsules.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an identifier detection system is added to verify portion capsule compatibility, then device reliability is improved by preventing damage from incompatible capsules, but device complexity increases due to additional detection components and procedures

Engineering Contradiction:
Improvebrewing device reliabilityVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by detecting the identifier on the portion capsule before the brewing operation commences. The control unit checks whether the detected identifier matches a valid system identifier, and only permits brewing if compatibility is confirmed. This prevents incompatible capsules from causing damage while maintaining system reliability without requiring complex real-time monitoring during the brewing process.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If the brewing device automatically detects and rejects incompatible portion capsules, then ease of operation is improved by eliminating the need for consumer caution, but device complexity increases due to automated detection mechanisms

Engineering Contradiction:
Improveease of capsule loadingVSAvoiddetection system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The brewing device performs self-service by automatically detecting the identifier on the inserted portion capsule and independently determining its compatibility with the system. The control unit automatically compares the detected identifier against valid identifiers and either permits or prevents brewing without requiring the consumer to manually verify compatibility or take additional actions. This simplifies operation for the user while the system handles the complexity of compatibility verification autonomously.

Inventive Principle:
Principle #25Self-service

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 system effectively prevents damage to brewing devices by ensuring only system-specific capsules are used, eliminating the risk of operation with non-compatible capsules without requiring excessive consumer caution, and ensuring a reliable brewing process.

Implementation Method 1

the resistance measuring device comprises a first contact point for contacting the portion capsule and a second contact point for contacting the portion capsule, wherein the resistance measuring device includes a measuring device for measuring the electrical resistance between the first and the second contact points

Methodology Applied
Scientific EffectElectrical resistance measurement: Electrical Resistance

Implementation Method 2

the induction measuring device for measuring an electromagnetic field induced by the portion capsule

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentEP2866622B1System and method for preparing a beverage
Publication Date: 2020.12.02 EUGSTER FRISMAG AG
  • EP2866622B1 patent drawingFigure 1a~1c
  • EP2866622B1 patent drawingFigure 1d~1e
  • EP2866622B1 patent drawingFigure 2

AI summary

The invention relates to a system for preparing a beverage, comprising a portion capsule which contains a beverage raw material, and a brewing device which comprises a brewing chamber for receiving the portion capsule and for extracting the beverage from the portion capsule by means of hot water. Said capsule portion comprises an identification and said brewing device comprises an identification detector for identifying the identification of portion capsule.