Centrifugal Pump Impeller Design via Specific Speed Database
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Solution Overview
Problem
Existing design programs for centrifugal and mixed flow pumps are complex, require professional knowledge, and often result in simple, non-optimal designs that need re-designing to meet customer specifications, limiting their performance and usability for beginners.
Innovation Solution
A method that defines design variables for the meridional plane and vane angle of impellers, converts these variables into functions based on specific speed, and stores them as a database to facilitate the 3D design of impellers, enabling an optimal and efficient design process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If foreign developed design programs based on theories and empirical formulas are used, then design programs can be utilized, but the designed shapes become simple and require re-designing to achieve high performance
Solution Approach 1:
The patent transforms design variables into functions based on specific speed relationships and stores optimal values in a database. This allows the system to automatically select optimized parameters based on the pump's specific speed, eliminating the need for manual re-designing while achieving high performance designs.
Solution Approach 2:
The patent pre-calculates and stores optimal design variable values in a database based on specific speed ranges. When a design is needed, the system directly retrieves pre-optimized values rather than performing complex calculations or requiring expert knowledge, thus providing both ease of use and design optimization.
2Ease of manufacture
If foreign developed design programs are used, then design functionality is provided, but the programs become complicated and require professional knowledge to operate
Solution Approach 1:
The patent creates a simplified Korean-language design program that copies the essential functionality of complex foreign programs but replaces their complicated interfaces and theoretical requirements with a user-friendly system based on specific speed lookup tables and automated calculations.
Solution Approach 2:
The system automatically determines optimal design variables by inputting basic pump specifications and specific speed, then automatically retrieves and applies optimized parameters from the database without requiring users to understand complex theories or perform manual optimizations.
3Manufacturing precision
If design variables are manually optimized, then high performance can be achieved, but the design process becomes time-consuming and requires expert knowledge
Solution Approach 1:
Optimal design variable values have been pre-calculated and stored in a database based on specific speed relationships. When a design is needed, the system simply retrieves these pre-optimized values, achieving both high performance and rapid design without requiring expert knowledge or manual optimization time.
Data Source
AI summary
A method for designing a centrifugal pump and a mixed flow pump having a specific speed of 150-1200 comprises a design specification determination step for a turbo pump including an impeller, a specific speed determination step for the impeller, a design variable determination step for the impeller, and a three dimensional shape deriving step for the impeller. According to the present invention, the three dimensional shape of the impeller can be simply designed by converting the design variables related to the specific speed into a function and by putting optimized design variables into a database.