High Torque Electric Pump Motor with Direct Drive
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Solution Overview
Problem
Conventional pump systems face challenges in achieving high torque and fluid pressure efficiently, often requiring gear reduction systems that increase weight, friction, and cost, while also being limited by the number of poles that can be fitted around the axis of rotation.
Innovation Solution
The pump apparatus employs an electric motor with a stator and rotor configured to generate high torque through a high pole count, eliminating the need for gear reduction by using coils that extend entirely around the common axis, allowing for more poles and efficient force distribution, and a drive mechanism that converts rotational output into linear reciprocating motion directly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If gear reduction systems are used to increase torque, then torque output is improved, but weight increases and friction increases
Solution Approach 1:
The patent replaces the mechanical gear reduction system with an electromagnetic field-based motor design. The motor generates high torque directly through electromagnetic interaction between the stator coils and rotor magnets, eliminating the need for mechanical gears and associated weight and friction.
Solution Approach 2:
The patent changes the motor's design parameters by increasing the pole count and optimizing the magnetic field configuration to generate high torque at low speeds directly, without mechanical multiplication. This allows the motor to achieve the required torque output through electromagnetic parameter optimization rather than mechanical leverage.
2Force
If gear reduction systems are used to increase torque, then torque output is improved, but friction increases
Solution Approach 1:
The patent eliminates mechanical friction by replacing the gear reduction system with direct electromagnetic torque generation. The electromagnetic field interacts directly with the rotor to produce rotational force without mechanical contact between moving parts, thereby eliminating frictional energy losses.
3Force
If conventional motor designs with limited poles are used, then manufacturing is simpler, but torque generation at low speeds is insufficient
Solution Approach 1:
The patent optimizes motor parameters by increasing the pole count and adjusting the magnetic field configuration to enhance low-speed torque generation. This parameter optimization allows the motor to produce sufficient torque without requiring complex mechanical multiplication systems.
Solution Approach 2:
The patent extends the coils entirely around the common axis, utilizing the full three-dimensional space available in the motor structure. This dimensional optimization allows for maximum magnetic field interaction and torque generation within the given motor envelope, eliminating the need for external mechanical complexity.
4Stress or pressure
If mechanical amplification systems are used to achieve high pressure, then fluid pressure is improved, but device complexity increases
Solution Approach 1:
The patent replaces mechanical amplification systems with direct electromagnetic-driven fluid displacement. The motor's rotational output is converted to linear reciprocating motion through a drive mechanism, directly pumping fluid to high pressures without intermediate mechanical amplification stages.
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
This configuration enables high torque generation at low speeds with minimal weight and friction, achieving high fluid pressures and efficient fluid displacement without the need for mechanical amplification, resulting in a compact, cost-effective, and efficient pumping system.
Implementation Method 1
a stator configured to be electrically energized to generate magnetic flux that causes the rotor to rotate
Implementation Method 2
the rotor comprising a plurality of magnets, each magnet elongate and extending parallel with the common axis, the plurality of magnets annularly arrayed around the common axis
Data Source
AI summary
A fluid moving apparatus includes an electric motor having a rotor and a stator and a fluid displacement member. The rotor rotates relative to the stator on a common axis to generate a rotational output. The rotational output is provided to the fluid displacement member to power the fluid displacement member to one of move linearly along and rotate about the common axis. The stator includes one or more coils configured to power rotation of the rotor. The one or more coils extend circumferentially around and can be coaxial on the common axis.