Thin Pump Structure Using Embedded Rotor Magnet and Pillar Stator
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Solution Overview
Problem
Existing liquid cooling systems for electronic devices face challenges in reducing the thickness of pumps while maintaining efficient heat dissipation, as conventional designs are bulky and hinder the miniaturization of these devices.
Innovation Solution
A thinned pump design featuring a rotor assembly with a magnetic component embedded in the impeller and a stator assembly using magnetically conductive pillars instead of conventional yokes, which are welded to a circuit board, allowing for a reduction in overall thickness and slimming of the pump.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional pump designs are used, then the pump can maintain sufficient structural strength and magnetic component stability, but the thickness cannot be reduced
Solution Approach 1:
The magnetic component is merged with the impeller by embedding it directly into the impeller structure, eliminating the need for separate magnetic component housings and mounting structures. This integration reduces the overall thickness of the rotor assembly while maintaining the magnetic field generation capability and structural integrity needed for pump operation.
Solution Approach 2:
The patent transitions from a conventional three-dimensional stator yoke structure to a planar array of magnetically conductive pillars mounted on the circuit board. This dimensional change allows the magnetic circuit to be formed in a thinner profile while maintaining sufficient magnetic flux path integrity for reliable pump operation.
2Length of moving object
If conventional stator yokes are used, then the magnetic circuit is stable and reliable, but the pump thickness cannot be reduced
Solution Approach 1:
The conventional monolithic stator yoke is segmented into multiple discrete magnetically conductive pillars that are individually mounted on the circuit board. Each pillar serves as a separate magnetic flux path, and this segmentation allows for a thinner overall stator structure while maintaining the necessary magnetic circuit functionality through the distributed pillar array.
3Length of moving object
If the magnetic component is embedded into the impeller, then the rotor assembly thickness is reduced, but the manufacturing complexity increases
Solution Approach 1:
The magnetic component is merged with the impeller by embedding it directly into the impeller structure, eliminating the need for separate magnetic component housings and mounting structures. This integration reduces the overall thickness of the rotor assembly while maintaining the magnetic field generation capability and structural integrity needed for pump operation.
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 thinned pump achieves a reduced thickness while maintaining efficient fluid circulation and heat dissipation capabilities, aligning with the need for lightweight and compact electronic devices.
Implementation Method 1
The stator assembly includes a plurality of magnetically conductive pillars and a plurality of coils. The magnetically conductive pillars are mounted at one side of the base located opposite to the fluid chamber, and the coils are respectively disposed on the magnetically conductive pillars.
Implementation Method 2
The rotor assembly includes an impeller and a magnetic component. The impeller is rotatably disposed in the casing, and the magnetic component is embedded into the impeller.
Data Source
AI summary
A thinned pump includes a casing, a rotor assembly and a stator assembly. The casing includes a base and a cover. The cover covers the base so as to form a fluid chamber together, the cover has an inlet channel and an outlet channel, and the inlet channel and the outlet channel are in fluid communication with the fluid chamber. The rotor assembly includes an impeller and a magnetic component. The impeller is rotatably disposed in the casing, and the magnetic component is embedded into the impeller. The stator assembly includes a plurality of magnetically conductive pillars and a plurality of coils. The magnetically conductive pillars are mounted at one side of the base located opposite to the fluid chamber, and the coils are respectively disposed on the magnetically conductive pillars.