Liquid Pump Heated Chamber Wall and Guide Elements
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Solution Overview
Problem
Existing liquid pumps face inefficiencies and complex production processes, with inadequate heat transfer and flow guidance, leading to suboptimal performance and increased noise.
Innovation Solution
A liquid pump design featuring a pump housing with a heated pump chamber wall and radially arranged guide elements outside the rotor, which direct the liquid flow effectively along the heated surface, reducing noise and enhancing heat transfer by increasing the number of liquid rotations and minimizing flow separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If guide elements are provided separately and attached to the pump base, then the flow guidance can be optimized, but the device complexity and assembly steps increase
Solution Approach 1:
The guide elements are integrated directly into the pump base as a single piece structure, eliminating separate attachment steps. The pump base is designed with built-in guide features that form continuous flow paths, combining what were previously separate components into one monolithic structure that reduces assembly complexity while maintaining flow guidance functionality.
2Speed
If the liquid flow transitions sharply at the pump chamber wall, then the flow direction changes quickly, but flow separation occurs reducing heat transfer efficiency
Solution Approach 1:
The pump chamber wall is designed with curved, rounded transitions instead of sharp angles. The wall features gradual curvature changes that guide the liquid flow smoothly around bends, preventing flow separation and maintaining attached flow. This curved geometry allows the liquid to follow the wall contour without detaching, ensuring continuous contact with the heated surface for efficient heat transfer.
3Volume of moving object
If the rotor is positioned closer to the pump base, then the pump size is reduced, but the flow guidance becomes more difficult
Solution Approach 1:
The guide elements extend in the radial direction from the pump base, creating a three-dimensional flow guidance structure. By utilizing the radial dimension, the guide elements can effectively direct flow around the rotor even in the limited space available when the rotor is positioned close to the base. This dimensional approach allows compact positioning while maintaining adequate flow guidance clearance.
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 design achieves efficient heat transfer and reduced noise by optimizing liquid flow and increasing the number of rotations along the heated pump chamber wall, while simplifying production through integral molding of guide elements, resulting in improved pump performance and reduced assembly complexity.
Implementation Method 1
A heating element is provided on an outer wall of the pump chamber or pump housing
Implementation Method 2
optimized heat transfer from the heating element to the pumped fluid
Data Source
Figure 1
Figure 2~3
AI summary
A liquid pump has a rotor in a pump housing which has a pump chamber, a pump base, a pump-chamber wall and a cover. The rotor rotates just above the pump base, the pump-chamber wall being provided around the outside of and slightly spaced apart from the rotor and having a heating means thereon. An inlet to the rotor is provided centrally in the axial direction towards the rotor and an outlet from the pump housing is provided externally at the periphery of the pump-chamber wall. Blade-like guiding elements which are integrally injection-moulded thereon are arranged on the pump base, radially outside the impeller.