Capsule Holder Layout to Prevent Beverage Machine Insertion Jams

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Solution Overview

Problem

Existing beverage machines using ingredient capsules often experience blockages due to the capsule abutting against pyramid-shaped projecting members during insertion, leading to incorrect positioning and potential crushing, which complicates the machine's operation.

Innovation Solution

The machine design features a capsule holder with perforating projecting members arranged at an angle and a flange with an enlarged end portion to reduce the risk of trapping, along with guiding members and stops to ensure proper alignment, and a mechanism for the capsule cage to move in a rectilinear path, eliminating the need for an inclined ramp.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the capsule cage moves horizontally towards the capsule holder, then the ingredient capsule is pressed against the capsule holder for beverage preparation, but the capsule may abut against pyramid-shaped projecting members causing blockage and incorrect positioning

Engineering Contradiction:
Improvecapsule positioning reliabilityVSAvoidcapsule blockage
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the movement path of the capsule cage from purely horizontal to rectilinear (diagonal), introducing a vertical component to the motion. This dimensional change allows the capsule to be engaged at a higher location on the capsule holder, avoiding the pyramid-shaped projecting members that cause blockage in the horizontal movement path.

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

Solution Approach 2:

The capsule is engaged with the capsule holder at a higher location before the full closing movement is completed. This preliminary engagement at an elevated position prevents the capsule from contacting the problematic pyramid-shaped members during the insertion process, avoiding blockage before it can occur.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If an inclined ramp is added to engage the capsule at a higher location, then the risk of blockage is reduced, but the mechanism becomes more complex

Engineering Contradiction:
Improvecapsule positioning reliabilityVSAvoidmechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent removes the inclined ramp component from the mechanism, eliminating the source of complexity. Instead of using a ramp to achieve higher engagement, the solution uses a rectilinear movement path that naturally positions the capsule correctly without requiring additional mechanical elements.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Rather than adding an inclined ramp to change the engagement height, the patent inverts the approach by using a rectilinear (diagonal) movement path. This reverses the conventional wisdom of using ramps for angular engagement, achieving the same goal of higher capsule engagement through a different geometric approach that simplifies the mechanism.

Inventive Principle:
Principle #13The other way round (Inversion)

3Device complexity

If the capsule cage follows a rectilinear path, then the mechanism is simplified and blockage risk is reduced, but precise alignment must be ensured

Engineering Contradiction:
Improvemechanism simplicityVSAvoidcapsule alignment precision
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The patent introduces guiding members as intermediary elements that facilitate the rectilinear movement of the capsule cage. These guiding members ensure that the capsule maintains proper alignment throughout its diagonal path, providing the necessary precision without complicating the overall mechanism.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces complex angular mechanical systems (such as inclined ramps) with a simpler rectilinear movement system. By substituting the inclined plane mechanism with a diagonal linear path guided by guiding members, the system achieves both simplicity and precision through a different mechanical approach.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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

This design reduces the risk of blockages and simplifies the machine's operation by ensuring the capsule is correctly positioned, preventing crushing and ensuring smooth closure, while maintaining a simplified mechanism without the complexity of an inclined ramp.

Implementation Method 1

When the capsule cage is further moved horizontally towards the capsule holder the ingredient capsule is urged to pass below the two stops so as to be pressed against the capsule holder along its central axis

Methodology Applied
Scientific EffectMechanical Force: Mechanical Force

Implementation Method 2

When the capsule cage moves backward the ingredient capsule falls by gravity in a lower collecting bin

Methodology Applied
Scientific EffectGravity: Gravitation

Implementation Method 3

The tear face cover of the capsule presses against these edges under pressure residing in the capsule and tears and the coffee beverage flows through the filtration orifices

Methodology Applied
Scientific EffectPressure: Pressure Increase

Data Source

PatentEP2547240B1A beverage machine using ingredient capsules
Publication Date: 2018.12.26 SOCIETE DES PRODUITS NESTLE SA
  • EP2547240B1 patent drawingFigure 1a~1b
  • EP2547240B1 patent drawingFigure 2~3
  • EP2547240B1 patent drawingFigure 4

AI summary

The invention concerns a beverage machine comprising a casing (32) enclosing: - a first part (34) for receiving an ingredient capsule therein, - a second part (70) having a surface (91) provided with perforating projecting members (90) facing the first part, - an opening (76) in the casing enabling the capsule to be inserted in a direction of insertion (Z) between the first and second parts, the first and second parts being movable relative to each other along a longitudinal axis (X) perpendicular to surface (91) between a first position in which first and second parts are spaced apart so that the ingredient capsule is inserted therebetween and a second position in which first and second parts are close to each other so that the capsule is in contact with the member. The members (90) are provided in an arrangement on the surface with respect to the opening (76) so as to permanently reduce the risk of trapping of the capsule by the members during the capsule insertion.