Semi-Open Radial Pump Impeller for Lower Pressure Loss
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Solution Overview
Problem
Existing radial pump stages suffer from suboptimal flow properties due to their design, particularly affecting the efficiency and performance of the pump impeller.
Innovation Solution
A semi-open pump impeller design with guide vanes extending axially and a radial pressure outlet, featuring specific geometric configurations such as varying vane distances, rectangular pressure outlets, and controlled radial gaps, along with a pump stage housing that enhances flow properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional pump impeller design is used, then the structure is simple, but the flow properties are suboptimal with increased turbulence and pressure losses
Solution Approach 1:
The pump impeller is segmented into multiple guide vanes (at least three guide vanes) arranged at different angular positions around the rotation axis. Each guide vane is independently configured with specific geometric parameters, allowing optimization of flow guidance throughout the impeller circumference. This segmentation enables reduced turbulence and pressure losses while maintaining a manageable structural complexity through modular design.
Solution Approach 2:
Different regions of the guide vanes have locally optimized geometric properties. The guide vanes feature varying heights along their length, with the height increasing in the direction of fluid flow. The vanes are positioned at different radial distances from the rotation axis, creating local variations in flow guidance characteristics. This local quality optimization reduces energy losses while avoiding uniform complexity throughout the entire structure.
2Loss of energy
If guide vanes are extended axially, then flow properties are improved, but the axial height requirement increases
Solution Approach 1:
The guide vanes are designed with dynamic geometric characteristics, where the height of each vane varies along its length in the direction of fluid flow. This dynamic height variation allows the vanes to effectively guide flow at different axial positions without requiring uniform maximum height throughout. The varying height profile reduces turbulence while optimizing the axial space utilization, resolving the contradiction between flow improvement and axial height requirements.
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 improved design results in enhanced flow properties, reducing turbulence and pressure losses, thereby increasing the efficiency and performance of the radial pump stage.
Implementation Method 1
a semi-open pump impeller arranged therein, the pump stage housing having an axially arranged suction inlet, which leads into the pump stage housing, and a radially arranged pressure outlet
Implementation Method 2
the pump impeller comprising a plurality of guide vanes, and at least one of the plurality of guide vanes or all of the plurality of guide vanes extending in the axial direction
Data Source
AI summary
A radial pump stage having a pump impeller which includes a plurality of guide vanes that extend in the axial direction. A sensor cleaning device having a radial pump stage of this kind, and to a vehicle having a radial pump stage of this kind or a sensor cleaning device of this kind.