Paint Application Device Humidification Viscosity Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing paint application devices for water-dilutable paints face issues with viscosity changes due to solvent evaporation, leading to inconsistent spraying and clogging, particularly when applying thin layers or exact quantities, as they require manual stirring and solvent addition.
Innovation Solution
A paint application device with a humidification system that introduces solvent vapor into the paint circuit, allowing for precise control of viscosity without manual stirring, using a viscosity gauge and control device to adjust solvent vapor supply and cooling to condense and mix it with excess paint, ensuring consistent application and reduced clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a closed paint circuit is used to recycle excess paint, then paint usage efficiency is improved, but solvent evaporation causes viscosity increase leading to spraying inconsistency and clogging
Solution Approach 1:
The patent introduces solvent vapor into the paint circuit to change the physical-chemical parameters of the paint, specifically maintaining its viscosity by compensating for solvent evaporation. This allows the closed circuit system to maintain consistent spraying performance while recycling paint.
Solution Approach 2:
The patent replaces manual stirring and solvent addition operations with an automated solvent vapor injection system. The vapor phase solvent is introduced into the paint circuit where it automatically mixes with the paint, eliminating the need for mechanical intervention and maintaining consistent paint properties.
2Stability of the object's composition
If manual stirring and solvent addition is performed to maintain viscosity, then paint consistency is improved, but operational complexity and difficulty increase
Solution Approach 1:
The paint system performs self-maintenance through automated solvent vapor injection. The system automatically monitors and adjusts paint viscosity by introducing solvent vapor as needed, eliminating the need for manual stirring and solvent addition operations.
Solution Approach 2:
Manual mechanical operations (stirring and solvent pouring) are replaced with an automated vapor injection system. The solvent is introduced in vapor phase and automatically mixes with the paint through diffusion and convection, requiring no manual intervention.
3Ease of operation
If water-dilutable paints are used for ease of handling, then operational ease is improved, but water evaporation leads to viscosity increase and clogging
Solution Approach 1:
The patent converts the harmful effect of water evaporation (which causes viscosity increase) into a beneficial control mechanism. By intentionally introducing water vapor into the paint circuit, the system compensates for evaporated water and maintains optimal viscosity, turning the evaporation problem into a controllable parameter.
Solution Approach 2:
The system dynamically adjusts the water content parameter in the paint by introducing water vapor. This maintains the paint's flow properties and prevents clogging while preserving the ease of handling characteristics of water-dilutable paints.
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
Enables precise control of paint viscosity and application, allowing for shorter drying times and distances, with improved solids content and reduced clogging risks, facilitating uniform coating and efficient paint usage.
Implementation Method 1
Such a supply of a solvent such as water, as a solvent vapor is advantageous in that it is absorbed more easily by the paint so that the viscosity of the paint can thereby be maintained or changed in a simple manner.
Implementation Method 2
the cooling device cools the mixture of solvent vapor introduced via the humidification device and excess paint withdrawn from the application device. In this context, it is particularly preferred that the cooling device cools a surface where the mixture of excess paint and solvent vapor condenses.
Implementation Method 3
The paint discharge device may comprise a pump or suction means, for example, wherein, in particular in the preferred use of a suction device, a vacuum is generated in a coating chamber of the paint application device.
Data Source
AI summary
A paint application device, in particular suited for the application of water-dilutable paints, comprises a paint reservoir connected with a paint application device via a supply line. Further, a paint discharge device for returning excess paint from the area of the paint application device into paint reservoir is provided. For the adjustment or the maintenance of the viscosity of the paint, a humidification device is provided for increasing the air humidity in the area of the paint application device and/or in the paint reservoir.