Diagonal Impeller Water Pump Reducing Flow Deflection Losses
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Solution Overview
Problem
Conventional motor-driven radial impeller water pumps for garden ponds and aquaristics achieve high delivery pressure but have low delivery volume and high power consumption, making them inefficient for applications requiring large volume flow.
Innovation Solution
A water pump design featuring a diagonal impeller with a conical cover disk that deflects water flow by a smaller angle, minimizing deflection losses and optimizing efficiency, allowing for higher volume flow at lower pressure with reduced power consumption and a compact, cost-effective construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a radial impeller with 90° deflection angle is used, then delivery pressure is high, but delivery volume is low and power consumption is high
Solution Approach 1:
The patent changes the impeller geometry parameters by using a diagonal impeller design with a conical cover disk instead of a conventional radial impeller. This geometric parameter change redirects the water flow at a smaller angle, reducing deflection losses and improving delivery volume while maintaining acceptable pressure levels
Solution Approach 2:
The patent introduces a diagonal flow component in addition to the radial flow, creating a three-dimensional flow path through the impeller. This diagonal flow arrangement allows water to be conveyed more efficiently along the shaft axis direction, increasing delivery volume without proportionally increasing power consumption
2Stress or pressure
If a radial impeller with 90° deflection angle is used, then delivery pressure is high, but power consumption is high
Solution Approach 1:
By changing the impeller geometry to a diagonal design with conical cover disk, the patent reduces the flow deflection angle and associated energy losses. This parameter change improves energy efficiency by minimizing the work required to redirect water flow, thereby reducing power consumption for the same pressure output
3Stress or pressure
If a conventional radial impeller is used, then delivery pressure is achieved, but pump size is large
Solution Approach 1:
The diagonal impeller design with conical cover disk changes the flow path parameters, allowing for a more compact impeller geometry. The diagonal flow arrangement achieves the required pressure generation within a smaller radial and axial space, reducing overall pump size while maintaining pressure performance
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 diagonal impeller design enhances volume efficiency, reduces power consumption, and enables a more compact and cost-effective pump that can achieve higher volume flow with less energy, making it suitable for applications requiring continuous operation and significant energy savings compared to conventional pumps.
Implementation Method 1
pumps are used in this area that have a motor-driven radial impeller, so that the water to be pumped is deflected by a deflection angle of 90°
Data Source
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AI summary
In a water pump comprising a pump housing (1) which has a water inlet (3) and a water outlet (4) and in which a driven pump impeller (5) is arranged, the pump impeller (5) is designed according to the invention as a diagonal impeller having an essentially conical cover disc (6). The water inlet (3) and the water outlet (4) are preferably arranged in such a way that the water inflow direction and the water outflow direction are essentially perpendicular to one another. The leading blade edges (8) of the impeller blades (9) should preferably run in a diagonal direction and parallel to the water flow and form a sealing gap (10) with the inner contour of the pump housing (1).