Fluid Dispensing Nozzle with Inclined Blocking Plate
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Solution Overview
Problem
Existing fluid dispensing apparatuses face challenges in accurately controlling the amount of fluid dispensed onto a substrate and preventing fluid splashing when a blocking plate is used between the nozzle and the substrate.
Innovation Solution
The apparatus includes a nozzle positioned relative to the substrate and a blocking plate with inclined surfaces that can be selectively positioned between the nozzle and the substrate, along with potential supply units to control fluid flow and a connection unit to manage fluid flow using surface tension, thereby preventing splashing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a blocking plate is used to prevent fluid splashing, then fluid control accuracy is improved, but fluid may still splash along the blocking plate surface
Solution Approach 1:
The blocking plate incorporates inclined surfaces that guide fluid flow along curved paths rather than flat surfaces, preventing splashing by directing fluid smoothly from the nozzle to the substrate without abrupt changes in flow direction
2Manufacturing precision
If the blocking plate is positioned close to the substrate to prevent splashing, then fluid control accuracy is improved, but the nozzle-to-substrate distance is reduced limiting dispensing flexibility
Solution Approach 1:
The blocking plate acts as an intermediary component between the nozzle and substrate, enabling precise fluid control while maintaining a larger nozzle-to-substrate distance. The blocking plate's inclined surfaces guide the fluid flow, allowing the nozzle to be positioned farther away without compromising dispensing accuracy or flexibility
3Manufacturing precision
If potential supply units are added to control fluid flow, then dispensing precision is improved, but device complexity increases
Solution Approach 1:
The system replaces complex mechanical fluid control mechanisms with electrical potential supply units that generate electric fields to control fluid flow. This substitution achieves precise dispensing control through electrical means rather than mechanical adjustments, reducing overall device complexity while maintaining high precision
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 effectively blocks and controls the dispensing of fluid onto the substrate, preventing unwanted splashing and ensuring precise fluid distribution, enhancing the accuracy and efficiency of fluid dispensing processes.
Implementation Method 1
The protruding portion may include a first inclined surface that is bent and extends upward from a surface of the blocking plate main body
Implementation Method 2
a negative potential supply unit connected with one of the blocking plate and the nozzle and generating a negative potential therein
Implementation Method 3
a positive potential supply unit connected with the other one of the blocking plate and the nozzle and generating a positive potential therein
Data Source
AI summary
An apparatus that dispenses a fluid onto a substrate includes a nozzle located in a position relative to the substrate to dispense the fluid onto the substrate and a blocking plate selectively disposed between the substrate and the nozzle.