Detachable Filter Insert for Infusion Devices to Simplify Cleaning

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Infusion devices for preparing beverages face issues such as glass container breakage due to high forces during pressing and inadequate cleaning of filter inserts, particularly when insoluble materials accumulate at hard-to-reach places.

Innovation Solution

A filter insert with a detachable closure member and perforated sections, allowing easy cleaning and preventing beverage residues from dripping, combined with a plunger-filter assembly for improved separation and a retaining ring for secure positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the closure member is fixedly connected to the filter insert, then the structural integrity is improved, but the cleaning process becomes cumbersome and time-consuming

Engineering Contradiction:
Improvestructural integrityVSAvoidcleaning process
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The closure member is designed as a detachable component that can be separated from the filter insert wall. This segmentation allows the closure member to be removed for thorough cleaning while maintaining structural integrity during operation through secure engagement mechanisms such as threading or snap-fit connections.

Inventive Principle:
Principle #1Segmentation

2Productivity

If the filter insert is used with a plunger-filter assembly, then the beverage preparation efficiency is improved, but the forces on the glass container wall increase causing breakage risk

Engineering Contradiction:
Improvebeverage preparation efficiencyVSAvoidcontainer breakage risk
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The filter insert wall acts as an intermediary component between the plunger-filter assembly and the glass container. It distributes the pressing forces applied by the plunger across a larger area and transfers them to the container wall in a more uniform manner, reducing stress concentration and preventing glass breakage while maintaining efficient beverage preparation.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of manufacture

If the filter insert has a fixed closure member, then the manufacturing simplicity is improved, but the accessibility for cleaning hard-to-reach places deteriorates

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidaccessibility for cleaning
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

By dividing the closure member into a detachable component, the design maintains manufacturing simplicity through standardized connection mechanisms while dramatically improving accessibility to the cavity interior for cleaning purposes.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The detachable closure member allows preliminary removal of the closure and insoluble material before the actual cleaning process, making subsequent cleaning of hard-to-reach places much easier and more effective.

Inventive Principle:
Principle #10Preliminary action

4Ease of operation

If the filter insert is designed with detachable closure member, then the cleaning ease is improved, but the device complexity increases

Engineering Contradiction:
Improvecleaning easeVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The detachable closure member introduces only minimal complexity through standardized connection mechanisms (such as threading or snap-fits) while providing significant cleaning advantages. The segmented design allows easy separation and reattachment without requiring complex assembly procedures.

Inventive Principle:
Principle #1Segmentation

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 safety by preventing glass breakage and simplifies cleaning, reduces cleaning liquid volume, and ensures hygienic handling by containing residues, while maintaining operational safety during beverage preparation.

Implementation Method 1

the wall having perforated sections with a plurality of filter openings

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Implementation Method 2

insoluble material will accumulate over time at the first open end of the filter insert due to the weight force acting on it

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentUS20250268414A1Filter insert for an infusion device for preparing beverages, in particular coffee or tea, and infusion device comprising such a filter insert
Publication Date: 2025.08.28 PI-DESIGN AG
  • US20250268414A1 patent drawing
  • US20250268414A1 patent drawing
  • US20250268414A1 patent drawing

AI summary

The present invention relates to a filter insert (28) for an infusion device (10) for preparing beverages, in particular coffee or tea, wherein the filter insert (28) comprises a wall (30) with a first open end (31) and a second open end (33), the wall enclosing a cavity (32) into which a material used for preparing the beverage is insertable, the wall (30) having perforated sections (34) with a plurality of filter openings (36), and a closure member (44) which is releasably connectable or connected to the wall (30) in the region of the first open end (31) and with which the first open end (31) is closable. Furthermore, the present invention relates to an infusion device (10) with such a filter insert (28).