Ceramic-Coated Coffee Machine Boiler for Scale-Resistant Heating
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Solution Overview
Problem
Automatic coffee machine boilers made of aluminium suffer from calcium deposit formation, which affects thermal efficiency and beverage quality, and have poor resistance to descaling agents and food compatibility regulations.
Innovation Solution
A boiler comprising two aluminium-based blocks with a ceramic coating on internal walls to prevent calcium deposits and oxidation, applied as a micrometric film using a spray technique, ensuring resistance to calcium accumulation and corrosion while maintaining heat exchange efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If aluminium-based blocks are used for the boiler, then thermal conductivity is improved, but calcium deposit formation increases
Solution Approach 1:
The invention applies a ceramic coating layer on the internal walls of the aluminium-based boiler blocks. This creates a composite structure where the aluminium block provides thermal conductivity while the ceramic coating prevents calcium deposit formation, thus resolving the contradiction between thermal performance and resistance to scaling.
2Temperature
If aluminium-based material is used for the boiler blocks, then thermal efficiency is improved, but resistance to descaling agents deteriorates
Solution Approach 1:
The ceramic coating applied on the aluminium block creates a composite material system where the coating layer provides chemical resistance to descaling agents while the underlying aluminium block maintains thermal efficiency, thus resolving the contradiction between thermal performance and chemical resistance.
3Temperature
If aluminium-based material is used for the boiler, then thermal conduction efficiency is improved, but food compatibility compliance deteriorates
Solution Approach 1:
The ceramic coating on the internal walls that contact water and food products provides a barrier that ensures food compatibility and compliance with regulations, while the aluminium block beneath maintains high thermal conduction efficiency, thus resolving the contradiction between thermal performance and food safety compliance.
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 ceramic coating effectively reduces calcium deposit formation and corrosion, enhancing the boiler's resistance and compatibility for use in food heating applications without compromising thermal efficiency.
Implementation Method 1
a ceramic coating (11) having properties that protect against oxidation and reduce the formation of calcium deposits
Implementation Method 2
at least one electric heating element for heating said channel being provided on an external wall at least of said first block
Data Source
Figure 1~2
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AI summary
A boiler (1) for an automatic coffee machine, comprising a first block (2) and a second block (3), both made of aluminium-based material and fixed one to the other, the first block (2) having an internal wall (4) facing an internal wall (5) of the second block (3) with which it delimits at least one channel (6) for circulation of the water, at least one electric heating element (9) for heating the channel (6) being provided on an external wall (7) at least of the first block (2), the internal walls (4, 5), at least in the areas thereof delimiting the channel (6), exhibiting a ceramic coating (11) having properties that protect against oxidation and reduce the formation of calcium deposits and/or calcium scale in the water circulation channel.