Screw Pumping Device for High Pressure Low Vibration
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Solution Overview
Problem
Existing liquid-cooled heat dissipation systems are bulky, inflexible, and have limited hydraulic pressure due to their reliance on traditional impeller centrifugal pumps, which also suffer from increased vibration at higher speeds, limiting their application in space-constrained environments.
Innovation Solution
A screw-type pumping device with a water pump shell, stator, and rotor, where the rotor and screw are integrally formed and rotate coaxially within a water pump chamber, allowing for higher hydraulic pressure output with reduced vibration and smaller size, enabling better space accommodation and longer service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional impeller centrifugal method is used to extract liquid, then the pumping device can be made small-sized, but the hydraulic pressure is limited and cannot meet higher pressure requirements
Solution Approach 1:
The patent replaces the traditional impeller centrifugal mechanism with a screw-type pumping mechanism. The screw structure, when rotated within the pump chamber, creates progressive cavities that move liquid axially while building pressure, substituting the radial centrifugal force mechanism with an axial progressive displacement mechanism that achieves both compact size and high hydraulic pressure.
Solution Approach 2:
The patent changes the fundamental operating parameter from radial centrifugal acceleration to axial screw rotation. By altering the motion pattern from rotational centrifugal force to helical progressive displacement, the system achieves different performance characteristics including higher pressure output within a compact form factor.
2Stress or pressure
If the diameter of the impeller is increased to improve hydraulic pressure, then higher pressure can be achieved, but more vibration occurs during rotation affecting service life
Solution Approach 1:
The patent replaces the impeller system with a screw-type rotor that rotates within a stator. This substitution eliminates the need for large-diameter impellers, as the screw mechanism generates pressure through axial progression rather than radial centrifugal force, thereby reducing rotational vibration and improving service life while maintaining high hydraulic pressure capability.
3Ease of manufacture
If external connection pipes are used to assemble the heat dissipation system, then the system can be easily assembled, but it occupies large space and has poor installation flexibility
Solution Approach 1:
The patent merges the pumping device with the heat dissipation system by providing a water pump shell that integrates the pump chamber, motor, and connection interfaces into a single compact unit. The first and second water ports are directly formed on the pump shell, eliminating the need for separate external connection pipes and reducing overall system volume while maintaining assembly ease.
Solution Approach 2:
The water pump shell serves multiple functions simultaneously: it acts as the pump housing, contains the motor, provides mounting interfaces for the stator and rotor, and incorporates water ports for fluid connection. This multi-functionality reduces the number of separate components and external pipes needed, thereby reducing space occupation while maintaining ease of assembly.
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 screw-type pumping device achieves higher hydraulic pressure with reduced vibration and smaller size, accommodating elongated spaces and supporting efficient heat dissipation with lower eddy currents and flow attenuation, enhancing the flexibility and performance of liquid-cooled heat dissipation systems.
Implementation Method 1
the water pump water chamber is internally provided with a screw configured to rotate coaxially with the rotor
Data Source
AI summary
The screw-type pumping device includes a water pump shell, a stator and a rotor. The water pump shell is provided with a first cavity for accommodating the stator and a second cavity for accommodating the rotor. At one end close to the second cavity, the water pump shell is provided with an outwardly-extending water pump water chamber, the water pump water chamber is internally provided with a screw configured to rotate coaxially with the rotor, and the water pump water chamber is provided with a first water port and a second water port which are in communication with the water pump water chamber. An objective of the present invention is to provide a screw-type pumping device and a liquid-cooled heat dissipation device. The newly designed screw-type pumping device can output higher hydraulic pressure while having a smaller vibration during high-speed rotation and a prolonged service life.