Solid CO2 Jet Cleaning for Vehicle Adhesive Surfaces
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Solution Overview
Problem
Existing methods for cleaning adhesive surfaces of vehicle components are inefficient in terms of adhesion, process time, and economy, particularly when using solid carbon dioxide.
Innovation Solution
An automated procedure using solid carbon dioxide in a particle, granulated, or crystalline form, accelerated by compressed air through a jet nozzle, to clean adhesive surfaces with specifically adapted cleaning parameters such as distance, speed, mass flow, pressure, and angle, optimizing adhesion and process efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cleaning methods are used for adhesive surfaces, then the cleaning process can be performed, but the adhesion quality is insufficient and process time is excessive
Solution Approach 1:
The patent applies parameter changes by systematically optimizing cleaning parameters including nozzle distance (5-15 cm), jet velocity (100-300 m/s), solid carbon dioxide mass flow (5-20 kg/min), and cleaning angle (30-60 degrees) to achieve optimal adhesion quality while reducing process time. This parametric optimization resolves the contradiction between adhesion quality and process efficiency
Solution Approach 2:
The patent utilizes phase transitions of carbon dioxide (solid to gas sublimation) as the cleaning mechanism. The solid carbon dioxide particles sublimiate upon impact with the adhesive surface, providing effective cleaning that improves adhesion while maintaining efficient process timing, thus resolving the contradiction between cleaning effectiveness and process duration
2Reliability
If conventional cleaning methods are used for adhesive surfaces, then the cleaning can be performed, but the cleaning effectiveness and adhesion optimization are insufficient
Solution Approach 1:
The patent replaces conventional mechanical cleaning systems with a pneumatic system using accelerated solid carbon dioxide jets. This substitution achieves superior cleaning effectiveness and adhesion optimization by utilizing high-velocity particle impact and sublimation mechanisms, while maintaining ease of implementation through standardized pneumatic components
Solution Approach 2:
The patent employs pneumatics by using compressed air to accelerate solid carbon dioxide particles to velocities of 100-300 m/s. This pneumatic delivery system achieves optimal cleaning effectiveness and adhesion results, resolving the contradiction between cleaning effectiveness and ease of manufacture through well-established pneumatic technology
3Productivity
If non-optimized cleaning parameters are used, then the cleaning process can be completed, but the economic efficiency is reduced
Solution Approach 1:
The patent implements feedback mechanisms by monitoring cleaning parameters (nozzle distance, jet velocity, mass flow, angle) and adjusting them to maintain optimal cleaning effectiveness. This feedback-controlled parameter optimization achieves high economic efficiency while managing device complexity through automated control systems
Solution Approach 2:
The patent applies dynamics by making cleaning parameters adjustable and optimizable during the cleaning process. The system dynamically adapts nozzle distance, velocity, mass flow, and angle parameters to achieve optimal economic efficiency, resolving the contradiction between productivity and device complexity through flexible, adaptive parameter control
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 procedure achieves improved adhesion, reduced process time, and enhanced economic efficiency by optimizing cleaning parameters, resulting in a more effective and automated cleaning process for vehicle components.
Implementation Method 1
The solid carbon dioxide is accelerated by compressed air as it passes through a jet nozzle
Implementation Method 2
The solid carbon dioxide is accelerated by compressed air as it passes through a jet nozzle and impacts the adhesive surface to be cleaned
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a method for cleaning using solid carbon dioxide, wherein adhesive surfaces of the vehicle components (102) are cleaned automatically in an assembly line having several work stations.