Process Chamber Fluid Stream Curtain for Thermal Separation
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Solution Overview
Problem
Drying installations for vehicle bodyworks face challenges in maintaining efficient thermal separation and ensuring adequate fresh air supply while preventing solvent levels from exceeding thresholds that could lead to explosions during the drying process.
Innovation Solution
The installation incorporates a device for introducing fresh air into the process chamber, creating a fluid stream curtain that separates the inner space from the environment and dilutes solvents, with a throughflow control system to adjust air volume based on chamber charge, using precompressed, heated, and filtered air or prepared exhaust air.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a fluid stream curtain is introduced to separate the inner space from the environment, then thermal separation efficiency is improved, but the complexity of the device increases
Solution Approach 1:
The patent employs a fluid stream curtain (air flow) to create a thermal barrier between the heated inner space and the cooler environment. The gaseous fluid is introduced through nozzles positioned at the opening, forming a protective curtain that reduces heat loss and maintains the drying temperature without requiring complex mechanical sealing systems.
Solution Approach 2:
The system adjusts the flow rate and temperature parameters of the gaseous fluid dynamically. By controlling the volume flow of fresh air and its temperature (heated to drying temperature), the system optimizes thermal separation efficiency while adapting to different charging conditions of the process chamber, thereby reducing energy consumption without compromising separation performance.
2Reliability
If fresh air is supplied to dilute solvents, then safety against explosions is improved, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts the fresh air supply rate based on the charging state of the process chamber. When the chamber is fully charged with workpieces requiring drying, fresh air is supplied at maximum rate to dilute solvents and prevent explosions. When the chamber is partially or empty, the fresh air supply is reduced, thereby minimizing energy consumption while maintaining safety.
Solution Approach 2:
The control device monitors the charging state of the process chamber and feedback-regulates the fresh air supply accordingly. This closed-loop control ensures that solvent dilution is provided only when and where needed, preventing unnecessary energy consumption while maintaining explosion safety thresholds.
3Use of energy by moving object
If the fresh air volume flow is reduced to lower energy consumption, then energy efficiency is improved, but the solvent dilution capability deteriorates
Solution Approach 1:
The system dynamically matches the fresh air volume flow to the actual drying requirements of the process chamber. By detecting the charging state (number of workpieces present), the system supplies fresh air at optimized rates - sufficient to dilute solvents when workpieces are present, but reduced when the chamber is empty or partially filled, thus balancing energy consumption with solvent safety.
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 enables efficient thermal separation and fresh air supply, reducing energy consumption and preventing solvent explosions by effectively diluting volatile solvents within the drying process, ensuring safe and efficient drying operations.
Implementation Method 1
efficient thermal separation of that inner space from the environment
Implementation Method 2
the solvent released during drying processes in the process chamber to be diluted sufficiently
Data Source
AI summary
The invention relates to an installation having a process chamber which comprises an inner space having a receiving region for workpieces. The process chamber has an opening for the supply or discharge of workpieces. The process chamber is constructed so as to have a device for the introduction of gaseous fluid into the inner space, which device has at least one nozzle or aperture for the production of a fluid stream curtain between the opening and the receiving region for workpieces. The process chamber has a device for supplying fresh air, with which device fresh air can be introduced into the receiving region at a side of the fluid stream curtain, which side faces away from the opening.