Spray Tip Orifice Rounded Interface Erosion Reduction
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Solution Overview
Problem
Erosion around the orifices of spray tips in fluid spraying systems leads to unsatisfactory changes in the spray pattern over time, affecting the consistency and quality of fluid application in various applications.
Innovation Solution
A tip piece design featuring a tip body with a passage and a nozzle that forms an orifice with a rounded interface, reducing erosion by eliminating sharp edges and maintaining a consistent spray pattern through the use of a rounded perimeter between the nozzle and passage, which can be manufactured using methods like sintering or additive manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional spray tip with sharp-edged orifice is used, then the initial spray pattern is well-defined, but erosion occurs around the orifice over time causing the spray pattern to change unsatisfactorily
Solution Approach 1:
The patent applies curvature by replacing the sharp-edged orifice with a rounded interface having a specified radius of curvature (0.002 inches to 0.008 inches). This rounded geometry eliminates stress concentration points and reduces erosion caused by fluid flow, thereby maintaining spray pattern consistency over time while preventing the harmful effects of orifice degradation
2Reliability
If a rounded interface is added to the orifice, then erosion is reduced and spray pattern consistency is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent specifies precise parameter ranges for the rounded interface radius (0.002 inches to 0.008 inches) that balance erosion resistance with manufacturability. This parameter optimization allows standard manufacturing processes to produce the rounded orifice without requiring complex additional steps, thereby maintaining ease of manufacture while achieving improved reliability
Data Source
AI summary
A tip piece for a sprayer includes a tip body extending between a first end and a second end. A passage extends inside the tip body from the first end to a terminal end between the first end and the second end of the tip body. A nozzle extends into the tip body from the second end of the tip body and intersects the terminal end of the passage to form an orifice. A rounded interface is formed on a perimeter of the orifice between the nozzle and the terminal end of the passage.