Two-Phase Flow Nozzle Spherical Alignment for Symmetrical Mist
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Solution Overview
Problem
Manufacturing errors in the assembly of two-phase flow nozzles can lead to asymmetrical gas exiting gaps, causing eccentric mist spray due to variations in the location of the liquid nozzle, which is not adequately compensated by existing designs.
Innovation Solution
The two-phase flow nozzle design incorporates an evolution curved surface on the liquid nozzle with an intermediate tapered section and a convex spherical surface to ensure proper alignment and compensation, along with a concave spherical surface on the liquid nozzle holder for secure positioning, eliminating manufacturing-induced clearance issues and maintaining parallelism with the gas and liquid axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed clearance design is used between gas nozzle and liquid nozzle, then manufacturing is simple, but manufacturing errors cause asymmetrical gas exiting gaps leading to eccentric mist spray
Solution Approach 1:
The invention uses a spherical surface on the liquid nozzle and a corresponding spherical recess on the gas nozzle to replace fixed clearance design. This curved surface contact provides automatic alignment compensation, ensuring symmetrical gas exiting gaps even when manufacturing tolerances exist, thereby eliminating eccentric mist spray while maintaining manufacturing simplicity.
2Device complexity
If traditional alignment methods are used, then device structure is simple, but alignment accuracy is insufficient due to manufacturing errors
Solution Approach 1:
The invention employs spherical contact surfaces between the liquid nozzle and gas nozzle to achieve automatic alignment. The spherical geometry inherently provides point contact and rotational freedom, allowing the nozzles to self-align during assembly, thereby achieving high alignment accuracy without adding complex alignment mechanisms or increasing device complexity.
3Productivity
If manufacturing tolerances are not compensated, then production process is simple, but gas exiting gap becomes asymmetrical causing eccentric spray
Solution Approach 1:
The spherical surface design on the liquid nozzle combined with the spherical recess on the gas nozzle creates a self-compensating mechanism that eliminates the impact of manufacturing tolerances on gas exiting gap symmetry. This allows mass production with standard tolerances while maintaining reliable symmetrical spray patterns, thus improving both productivity and spray reliability.
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 design ensures correct alignment and parallelism of the gas and liquid axes, eliminating eccentric mist spray by compensating for manufacturing errors and maintaining precise positioning of the liquid nozzle, resulting in a centered and symmetrical atomization of the mist.
Implementation Method 1
The compressed gas injected through the gas exiting gap shears the compressed liquid injected from the liquid spraying exit and atomizes the liquid
Data Source
AI summary
A two-phase flow nozzle, having limited dimensions of main parts relating to size of atomized particle and having correction means to assure the height of a gap of a gas exit, wherein said gap is formed between a lower surface of a gas nozzle and an upper surface of a liquid nozzle is provided. The nozzle is composed with the first liquid passage, the liquid nozzle with a liquid splaying exit, a concave located at an end of the liquid nozzle where said liquid exit is located lower than said end of liquid nozzle, a gas nozzle having a gap to supply compressed gas for atomizing from the outer periphery of said liquid nozzle to the liquid injected from said liquid exit, and having a gas exit, wherein said gap is formed by sticking the minute spherical extrusion composed integrally on said liquid nozzle with a lower surface of said gas nozzle. Further, the contact of said minute spherical extrusion with said upper surface of gas nozzle is automatically corrected by supporting a convex spherical supported surface, which is provided at an intermediate portion of said liquid nozzle, with a concave spherical supporting surface, which is provided at an upper inner peripheral edge of a liquid nozzle holder.