Removable Milk Line Coupling for Height-Adjustable Coffee Spouts

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Solution Overview

Problem

Existing coffee machines with height-adjustable dispensing carriages face challenges in cleaning milk supply lines due to their complex and time-consuming disassembly requirements, which affects both cleaning efficiency and aesthetic appeal.

Innovation Solution

Designing a coffee machine with a flexible hose connecting two coupling points, allowing for easy detachment and reattachment of the milk/coffee outlet, enabling separate and simple cleaning of all milk-contacting components, while keeping the supply line hidden from view.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If the supply line is hidden behind the milk/coffee spout for aesthetic purposes, then the visual appearance is improved, but the assembly and disassembly effort increases

Engineering Contradiction:
Improvevisual appearanceVSAvoidassembly and disassembly effort
Core Design Contradiction:
ShapeVSEase of operation

Solution Approach 1:

The supply line is divided into two separate coupling points (first coupling point on housing, second coupling point on milk/coffee outlet), allowing the milk/coffee outlet to be detached as a separate unit. This segmentation enables the supply line to remain hidden during operation while simplifying cleaning by allowing easy removal of the outlet component.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The milk/coffee outlet with its second coupling point is extracted as a removable component from the main housing structure. This allows the outlet to be easily detached for cleaning while the supply line remains concealed within the housing during normal operation, resolving the contradiction between aesthetic appearance and ease of maintenance.

Inventive Principle:
Principle #2Taking out (Extraction)

2Stability of the object's composition

If the milk/coffee outlet is rigidly connected to the housing, then the structural stability is improved, but the cleaning effort increases

Engineering Contradiction:
Improvestructural stabilityVSAvoidcleaning effort
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The connection between the milk/coffee outlet and housing is segmented into two detachable coupling points. During operation, the outlet remains stably connected through both coupling points, but during cleaning, the outlet can be easily removed by detaching from the second coupling point, reducing cleaning effort while maintaining structural stability during use.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connection system transitions from a rigid permanent connection to a dynamic removable connection. The outlet can be firmly connected during operation for stability, but can be easily detached when cleaning is needed, allowing the system to adapt between operational and maintenance states.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If the supply line is made visible for easy access, then the ease of operation is improved, but the visual appearance deteriorates

Engineering Contradiction:
ImproveaccessibilityVSAvoidvisual appearance
Core Design Contradiction:
Ease of operationVSShape

Solution Approach 1:

By segmenting the supply line into two coupling points and making the milk/coffee outlet removable, the system allows easy access to the supply line for cleaning by removing the outlet, while during normal operation the supply line remains hidden behind the outlet, maintaining aesthetic appearance.

Inventive Principle:
Principle #1Segmentation

4Device complexity

If the milk line is integrated into the housing, then the device complexity is reduced, but the cleaning effort increases

Engineering Contradiction:
Improveintegration levelVSAvoidcleaning effort
Core Design Contradiction:
Device complexityVSEase of repair

Solution Approach 1:

The milk line system is segmented into the housing-integrated first coupling point and the removable milk/coffee outlet with the second coupling point. This segmentation maintains relatively simple integration while enabling easy cleaning by allowing the outlet to be detached and cleaned separately without complex disassembly of the housing.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3025624B1Coffee machine
Publication Date: 2018.09.26 BSH HAUSGERATE GMBH
  • EP3025624B1 patent drawingFigure 1~2
  • EP3025624B1 patent drawingFigure 3~4
  • EP3025624B1 patent drawingFigure 5~6

AI summary

The invention relates to a coffee machine (1) with a housing (2) and a dispensing carriage (3) mounted thereon so that it can be adjusted in height, which is connected to a storage container (5), in particular to a milk container (6), via a supply line (4). It is essential to the invention that the supply line (4) has a first coupling point (7) and a second coupling point (8) and a flexible hose (9) connecting the first and second coupling points (7, 8), the first coupling point (7) detachably fixed to the housing (2) and fluidly connected to the storage container (5) and the second coupling point (8) can be detachably fixedly connected to the dispensing carriage (3) and fluidly connected to a milk/coffee spout (10) that can be plugged onto the dispensing carriage (3). , so that the reservoir (5), the supply line (4) together with the coupling points (7,8) and the milk/coffee outlet (10) can be removed from the coffee machine (1) for cleaning purposes. As a result, a milk line that is visually appealing and easy to assemble or disassemble can be provided.