Nozzle Flow Path Segmentation for Turbulence Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional nozzles experience turbulence in the jet ejected from the nozzle holes, which affects the efficiency and directionality of the liquid flow.
Innovation Solution
The nozzle design includes specific geometries for the liquid guide path, liquid chamber, and nozzle holes, such as truncated conical shapes and partitioning plates, to control the flow dynamics and suppress turbulence, ensuring a linear jet ejection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the nozzle uses a conventional simple structure, then the manufacturing is easy and device complexity is low, but the jet becomes turbulent and directionality is poor
Solution Approach 1:
The nozzle internal flow path is segmented into multiple functional sections: a straight cylindrical section followed by a tapered section, with specific length ratios (L1/L2 between 0.5-2.0). This segmentation allows the flow to transition from turbulent to laminar in stages, improving jet stability without requiring overly complex structures.
Solution Approach 2:
The patent optimizes specific geometric parameters including the length ratio of straight to tapered sections (L1/L2 = 0.5-2.0), the tapered angle (5-15 degrees), and the ratio of chamber diameter to nozzle diameter (D1/D2 = 2-10). These parameter changes transform the flow characteristics from turbulent to laminar, enhancing directionality while maintaining manufacturability.
2Volume of moving object
If the nozzle hole is positioned close to the bottom of the liquid chamber, then the structure is compact, but the flux distribution becomes biased and the jet deflects
Solution Approach 1:
The patent establishes optimal parameter ranges: the distance from the nozzle hole to the bottom of the liquid chamber should be 0.5-2.0 times the nozzle diameter, and the liquid chamber diameter should be 2-10 times the nozzle diameter. These parameter optimizations ensure symmetric flux distribution and prevent jet deflection while maintaining compact dimensions.
3Stability of the object's composition
If the liquid chamber has a large volume, then the liquid flow is stable, but the nozzle size increases and productivity decreases
Solution Approach 1:
The patent optimizes the liquid chamber diameter to be 2-10 times the nozzle diameter, and the straight section length to be 0.5-2.0 times the tapered section length. These optimized parameters provide sufficient flow stabilization volume while minimizing overall nozzle dimensions, maintaining high cleaning 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 designed nozzle suppresses turbulence, resulting in a more linear and controlled jet flow, enhancing the efficiency and directionality of the liquid ejection process.
Implementation Method 1
the jet ejected from the nozzle hole may be turbulent
Implementation Method 2
the flux distribution of the liquid flowing into the opening is biased toward the basal end of the nozzle
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Turbulence of the jet ejected from the nozzle hole is suppressed. The nozzle 100 includes a shaft body 102 having a center axis 127, a liquid guide path 104 located inside the shaft body 102 and extending along the center axis 127, a liquid chamber 106 disposed at a distal end portion of the liquid guide path 104 the liquid chamber 106 having a nozzle hole 108. The nozzle hole 108 is located at the distal end portion of the liquid chamber 106, extending along the ejection axis 122 that extends in a direction different from the center axis 127. The nozzle has an inlet portion 110 having a smaller diameter toward the downstream, and a guide portion 112 connected to the downstream of the inlet portion 110 to guide the liquid to an opening 113.