Built-in coffee machine

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Solution Overview

Problem

Built-in coffee machines face challenges in optimizing energy consumption and controlling environment parameters to enhance organoleptic properties of coffee, while maintaining safety and ease of maintenance.

Innovation Solution

A built-in coffee machine with a forced air circulation system using an air channel and fan for dehumidification and cooling, allowing precise control of the environment within the box frame, which is communicated with both the coffee beans and power electronics, eliminating the need for seals and optimizing energy use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the power and control electronics are sealed to prevent electrical risks from steam and moisture, then safety and reliability are improved, but the manufacturing cost increases significantly

Engineering Contradiction:
Improvesafety of power and control electronicsVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The harmful factors (steam and moisture) are extracted from the environment surrounding the power and control electronics by directing the air channel flow away from these components, eliminating the need for costly sealing measures while maintaining safety and reliability

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

A flow of air acts as an intermediary medium to create a protective barrier between the steam-moisture environment (generated by the boiler) and the power and control electronics, allowing unsealed electronics to operate safely

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of manufacture

If a fan is used to cool and dehumidify the internal environment to avoid sealing electronics, then sealing cost is reduced, but energy consumption increases due to continuous fan operation

Engineering Contradiction:
Improvesealing costVSAvoidenergy consumption
Core Design Contradiction:
Ease of manufactureVSUse of energy by moving object

Solution Approach 1:

The air channel provides continuous passive cooling and dehumidification through natural convection currents generated by temperature differences, eliminating the need for continuous fan operation and reducing energy consumption

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The system uses its own thermal energy (temperature differences between hot and cold zones) to drive the air circulation and dehumidification process, making the system self-sufficient without requiring additional energy input from a fan

Inventive Principle:
Principle #25Self-service

3Use of energy by moving object

If the air channel is oriented towards the support platform for heating cups, then energy efficiency is improved by recycling thermal energy, but the device complexity increases

Engineering Contradiction:
Improveenergy efficiencyVSAvoidair channel configuration
Core Design Contradiction:
Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The air channel serves multiple functions: it removes steam and moisture from the internal environment, cools the power and control electronics, and heats the support platform for cups. This multi-functionality is achieved through a single integrated structure rather than separate systems, actually reducing overall device complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 solution reduces energy consumption by recycling thermal energy and ensures precise control of coffee bean environment conditions, improving the quality and user responsiveness of the coffee dispensed, while maintaining safety and ease of maintenance and access for cleaning.

Implementation Method 1

a means for the forced circulation of a flow of air in turn comprising an air channel internal to said box frame for the dehumidification and cooling of the environment internal to said box frame and at least one fan for the forced circulation of said flow of air along said air channel

Methodology Applied
Scientific EffectForced convection: Forced Convection

Implementation Method 2

an air delivery section of said air channel is oriented for heating said cups

Methodology Applied
Scientific EffectConvection heating: Convection

Data Source

PatentEP3417746B1Built-in coffee machine
Publication Date: 2020.04.01 DE LONGHI APPLIANCES SRL
  • EP3417746B1 patent drawingFigure 1
  • EP3417746B1 patent drawingFigure 2a~2b
  • EP3417746B1 patent drawingFigure 3

AI summary

The built-in coffee machine (1) comprises components (4, 5, 6, 7, 8, 9, 10, 11, 12) housed in a box frame (3) and means for the forced circulation of a flow of air in turn comprising an air channel internal of said box frame (3) for the dehumidification and cooling of the environment internal of said box frame (3) and at least one fan (15) for forced circulation of the flow of air along said air channel (16), the box frame (3) advantageously supporting a support platform (13) for cups (14) towards which an air delivery section (17) of the air channel (16) is oriented for heating said cups (14).