Voltage-Assisted Nozzle for High Viscosity Paint Dispensing
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Solution Overview
Problem
Existing automotive paint systems face difficulties in applying high viscosity paint due to the large force required, which is inefficient and potentially damaging.
Innovation Solution
A nozzle assembly for a voltage-assisted painting system that includes an outer wall, an inner wall with a paint passage, and a pair of electrodes extending circumferentially around the inner wall. The electrodes are connected to a power source, creating an electrical potential difference that separates water droplets from the fluid in a fluid passage, reducing friction and adhesion within the nozzle assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high viscosity paint is applied using existing automotive paint systems, then the paint can be dispensed, but a large force is required which makes the process inefficient and potentially damaging
Solution Approach 1:
The patent replaces the purely mechanical paint dispensing system with a voltage-assisted system. Electrodes generate an electric field that interacts with the paint, creating electrostatic forces that assist in moving the paint through the nozzle. This substitution of mechanical force with electrostatic force reduces the mechanical force required while maintaining productivity.
Solution Approach 2:
The patent changes the physical state or properties of the paint by applying voltage. The electric field alters the paint's flow characteristics, effectively reducing its resistance to flow without changing its viscosity. This parameter change allows high viscosity paint to be dispensed more easily, resolving the contradiction between maintaining paint quality and reducing application force.
2Productivity
If high viscosity paint is applied using existing systems, then paint application is achieved, but the system complexity increases due to the need for high force mechanisms
Solution Approach 1:
Instead of complex mechanical mechanisms designed to generate high force, the patent uses a relatively simple voltage-assisted system with electrodes. This substitution reduces device complexity while maintaining or improving paint application capability. The electrostatic assistance mechanism is simpler than mechanical force multiplication systems.
3Force
If voltage is applied to separate water droplets from fluid, then friction and adhesion are reduced, but energy consumption increases
Solution Approach 1:
The patent applies voltage to change the electrical properties of the paint and fluid, creating separation of water droplets through electrostatic forces. This parameter change (applying electric field) reduces friction and adhesion forces between the paint and nozzle surfaces. The energy consumption is offset by the significant reduction in mechanical force required, improving overall system efficiency.
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 solution enables the efficient dispensing of high viscosity paint by reducing the force required, improving the resolution of the painting system, and facilitating the application of paint to vehicle bodies with reduced effort.
Implementation Method 1
Upon supplying power to the pair of electrodes, water droplets are separated from the fluid in the fluid passage
Implementation Method 2
water droplets are separated from the fluid in the fluid passage and pass through the inner wall to coat an inner surface of the inner wall to facilitate movement of the paint through the paint passage
Data Source
AI summary
A nozzle assembly for a painting system including an outer wall, an inner wall and a pair of electrodes. The inner wall defines a paint passage through which paint is dispensed. The inner wall is spaced from the outer wall to define a fluid passage between an outer surface of the inner wall and an inner surface of the outer wall. The pair of electrodes extend circumferentially around an outer surface of the inner wall. The pair of electrodes are configured to be electrically connected to a power source. The fluid passage is configured to receive a fluid. Upon supplying power to the pair of electrodes, water droplets are separated from the fluid in the fluid passage and pass through the inner wall to coat an inner surface of the inner wall to facilitate movement of the paint through the paint passage.