Liquid Bath Evaporator for Corrosion Test Chamber Temperature Control
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Solution Overview
Problem
Existing devices for reaction stress, particularly corrosion stress, face issues with reproducibility and maintenance due to aerosol and temperature control challenges, including encrustations and unpredictable temperature fluctuations, which affect the accuracy and longevity of the reaction load process.
Innovation Solution
A device with a temperature-adjustable liquid bath in the load space acts as an evaporator and absorber, ensuring precise control over temperature and aerosol load, reducing encrustations and maintaining consistent conditions, and a fan for uniform aerosol distribution, along with a transparent side wall for observation and a gas-tight housing for controlled environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a ceramic heating element is used in the flow path to heat the aerosol, then the temperature control is improved, but encrustations occur on the heating element leading to unreliable results
Solution Approach 1:
A flow path made of PTFE (polytetrafluoroethylene) is introduced as an intermediary between the ceramic heating element and the aerosol. This PTFE flow path prevents suspended particles from directly contacting and encrusting the heating element, while still allowing thermal energy transfer to heat the aerosol effectively.
2Ease of repair
If the flow path is designed to be simple for easy cleaning, then maintenance is simplified, but temperature control precision may be compromised
Solution Approach 1:
The flow path is segmented into a removable PTFE component that can be easily detached and cleaned separately from the heating element assembly. This segmentation allows simple maintenance of the flow path while the heating element remains in place, preserving temperature control precision without compromising maintenance simplicity.
3Stability of the object's composition
If compressed air is heated to counteract evaporation cooling, then temperature stability is improved, but blockages occur in the nozzle leading to changed spray patterns
Solution Approach 1:
The PTFE flow path serves as an intermediary that prevents particle accumulation and blockages in the nozzle area. By providing a non-stick surface, it ensures consistent aerosol flow and spray pattern while allowing the compressed air to be heated for temperature stability.
4Manufacturing precision
If ultrasonic atomization is used to generate fine aerosol, then aerosol quality is improved, but temperature fluctuations occur when the nebulizer is switched off
Solution Approach 1:
The PTFE flow path acts as a thermal intermediary that maintains more stable temperature conditions in the load chamber. It prevents direct thermal contact issues and provides thermal buffering, reducing temperature fluctuations when the ultrasonic nebulizer is switched on or off while preserving aerosol fineness.
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 allows for stable, precise, and reproducible temperature and aerosol loading, reducing maintenance complexity and ensuring consistent reaction conditions, improving the accuracy and longevity of the reaction process.
Implementation Method 1
the liquid bath can be used to absorb any floating particles that may fall out of the aerosol
Implementation Method 2
the temperature control device has a temperature-adjustable liquid bath that acts in particular as an evaporator
Implementation Method 3
an atomizer having an ultrasound source for at least partially forming an aerosol
Data Source
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AI summary
Disclosed is an apparatus and a method for reaction loading, in particular corrosion loading, at least one sample (1) comprising a housing (2) having a loading space (3), comprising a sample holder (4) for the sample (1) provided in the loading space (3), comprising an atomizer (8) having an ultrasound source (10) for at least partially forming an aerosol (11) that loads the sample (1), wherein the atomizer (8) produces the aerosol (11) in particular from a salt-containing liquid (9), and comprising a temperature-controlling device (12) for setting the temperature load of the sample (1). In order to provide advantageous load properties, it is proposed for the temperature-controlling device (12) to have a liquid bath (13) which is settable in terms of the temperature, acts in particular as an evaporator, is arranged at least partially in the loading space (3) and via which the temperature load of the sample (1) is substantially settable.