Crossflow Wave Making Pump Outer Rotor Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wave making pumps with inner rotor brushless motors suffer from low torque, leading to uneven flow and dead zones with insufficient liquid circulation, especially when high flow velocity is required.
Innovation Solution
A cross-flow wave making pump design featuring an impeller assembly with two turntables, an outer rotor motor, and a ceramic shaft, along with a specific impeller shell and vane configuration, which enhances torque and circulation efficiency by reducing dead zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If inner rotor brushless motor with propeller-type axial vanes is used, then high rotation speed is achieved, but torque is low and dead zones form
Solution Approach 1:
The patent inverts the traditional motor configuration by using an outer rotor brushless motor instead of an inner rotor motor. This inversion allows the impeller to be directly coupled with the rotor, transmitting torque more efficiently and eliminating dead zones while maintaining high rotation speed capability
Solution Approach 2:
The patent transitions from axial vanes to radial vanes, changing the dimensional orientation of the impeller blades. This dimensional change allows the vanes to better utilize the rotational motion and generate both high speed and sufficient torque simultaneously
2Quantity of substance
If inner rotor brushless motor with centrifugal vanes is used, then liquid is swallowed and extruded, but outlet area is small and flow velocity is limited
Solution Approach 1:
The patent inverts the motor configuration to outer rotor type, which reverses the power transmission path and allows direct coupling between the rotor and impeller. This inversion enables both large circulation volume and high flow velocity by eliminating intermediate transmission losses
Solution Approach 2:
The patent segments the impeller into multiple radial vanes that are independently arranged, allowing each vane to contribute to both volume displacement and velocity generation. This segmentation enables the system to achieve both high circulation volume and high flow velocity simultaneously
3Productivity
If rotation speed is increased to increase flow rate, then flow rate increases, but flow becomes uneven and dead zones are formed
Solution Approach 1:
The outer rotor configuration inverts the traditional power transmission approach, allowing the impeller to be directly driven by the rotor. This direct coupling ensures uniform power distribution to all radial vanes, maintaining flow uniformity even at high rotation speeds and preventing dead zone formation
Solution Approach 2:
The patent employs radial vanes with optimized local geometry and distribution, where each vane is specifically designed to create effective liquid circulation in its local region. This local optimization ensures uniform flow distribution across the entire system, preventing dead zones while maintaining high flow rate
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 sufficient liquid circulation and significantly reduces dead zones, enabling efficient liquid flow with high torque and improved flow guidance, overcoming the limitations of traditional inner rotor brushless motor pumps.
Implementation Method 1
a motor used for driving the impeller assembly
Implementation Method 2
the impeller assembly comprises an impeller used for driving a liquid flow... By rotating the impeller assembly, the cross-flow wave making pump creates a sufficient liquid-circulation
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
This invention relates to a cross-flow wave making pump comprising an impeller shell forming a water intake and a water outlet, an impeller assembly pivotally connected to two ends of the impeller shell, and a motor used for driving the impeller assembly; wherein, the impeller assembly comprises an impeller used for driving a liquid flow, a first turntable and a second turntable respectively fixed at two ends of the impeller, wherein the first turntable is provided with a shaft rotatably mounted in the impeller shell, the second turntable is provided with a cavity used for receiving a rotor shaft of the motor. The embodiments of the present invention can provide a sufficient liquid-circulation in a container, and significantly reduce the dead zone where the liquid flows extremely slowly.