Axial Gap Motor Pump Layout for Compact Low-Noise Packaging
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Solution Overview
Problem
Conventional pump assemblies using axial gap motors are not compact enough for narrow spaces, leading to increased size and noise leakage, and require improved thermal management to reduce motor load and power consumption.
Innovation Solution
The pump assembly integrates a first pump within the internal space surrounded by the teeth of an axial gap motor stator, utilizing an internal gear pump or vane pump configuration, which reduces the motor shaft length, minimizes noise leakage, and enhances thermal management by heat absorption, while sharing the motor shaft for synchronized rotation control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the axial gap motor and electric pump are arranged side by side, then the pump assembly is compact along the axis, but the overall size increases and noise leakage occurs
Solution Approach 1:
The pump is disposed inside the stator of the axial gap motor, nesting the pump within the motor structure. This eliminates the need for side-by-side arrangement while maintaining compact axial length, thereby reducing overall volume without increasing axial dimension.
2Length of moving object
If the axial gap motor and electric pump are arranged side by side, then the pump assembly is compact along the axis, but noise leakage increases
Solution Approach 1:
The pump is disposed inside the stator of the axial gap motor, nesting the pump within the motor structure. This arrangement contains the pump within the motor housing, preventing noise leakage to the external environment while maintaining compact axial length.
3Power
If conventional thermal management is used, then the motor operates, but motor load and power consumption increase
Solution Approach 1:
The pump housing serves dual functions: housing the pump and acting as a heat sink for the motor. The thermal management system utilizes the pump housing and cooling fins to dissipate motor heat, enabling the motor to operate at higher power levels without excessive temperature rise, thereby reducing relative power consumption.
4Length of moving object
If the pump is disposed inside the stator, then the motor shaft length is reduced, but the internal space utilization must be optimized
Solution Approach 1:
The pump is disposed inside the stator, utilizing the internal space within the tooth structure. This nesting arrangement reduces motor shaft length while the structured placement within tooth spaces maintains organizational simplicity.
Solution Approach 2:
The pump is arranged in the radial direction within the stator tooth spaces rather than extending axially. This dimensional change from axial to radial arrangement reduces motor shaft length while utilizing available radial space efficiently.
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 compact design reduces the motor shaft length, suppresses noise leakage, and lowers power consumption by thermal absorption, allowing for efficient fluid pumping in narrow spaces with reduced operational noise and improved thermal management.
Implementation Method 1
an axial gap motor including a first stator 4, a motor rotor 3 and a motor shaft 20
Implementation Method 2
enhances thermal management by heat absorption
Data Source
AI summary
A pump assembly includes an axial gap motor including a first stator, a motor rotor and a motor shaft, and a first pump including a first pump rotor configured to be rotated by the motor rotor. The first stator includes a first yoke having an annular shape and a plurality of first teeth disposed on a first surface of the first yoke. The first pump is disposed in a first internal space surrounded by the plurality of first teeth.