Hydraulic-Electromagnetic Motor Pump with Tapered Magnetic Bushing
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Solution Overview
Problem
Hydraulic-electromagnetic motor pumps with floating pistons face challenges in achieving high fluid pressurization without increasing coil size and production costs, which can lead to compatibility issues and uncompetitive product manufacturing.
Innovation Solution
Incorporating a magnetic bushing made of low magnetic residual steel with tapered portions and spacer means to enhance magnetic efficiency and reduce mechanical stresses, allowing for increased pressure without enlarging the coil or its wiring, while minimizing noise through reduced contact between moving parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If the intensity of the magnetic field is increased by oversizing the coil to achieve high fluid pressurization, then the pressure level is improved, but the dimensions and production costs increase
Solution Approach 1:
The patent applies local quality by introducing a magnetic bushing with tapered portions at specific locations within the pump chamber, concentrating magnetic field generation where needed rather than requiring a large coil throughout. The tapered geometry creates localized magnetic gradients that enhance pressurization efficiency without increasing overall coil size.
Solution Approach 2:
The patent employs composite materials by combining low magnetic residual steel with tapered geometric features to create the magnetic bushing. This composite structure leverages both material properties and geometric configuration to generate high magnetic field intensity locally, resolving the contradiction between pressure generation and coil size.
2Stress or pressure
If the intensity of the magnetic field is increased by oversizing the coil to achieve high fluid pressurization, then the pressure level is improved, but the production costs increase
Solution Approach 1:
By concentrating magnetic field generation in localized tapered portions of the magnetic bushing rather than requiring a large coil, the patent reduces the amount of magnetic material and wiring needed, directly lowering production costs while maintaining high pressurization capability.
Solution Approach 2:
The patent extracts the essential function of magnetic field generation from the large coil and relocates it to the compact magnetic bushing with tapered portions. This extraction allows the system to achieve the same pressurization effect with significantly reduced material usage and manufacturing complexity.
3Stress or pressure
If the coil size is increased to achieve high fluid pressurization, then the pressure level is improved, but the motor pump dimensions increase affecting compatibility
Solution Approach 1:
The magnetic bushing with tapered portions creates localized magnetic field enhancement at critical points within the existing pump chamber, achieving high pressurization without requiring an overall increase in pump dimensions. The tapered geometry concentrates the magnetic effect where needed while maintaining compact overall size.
4Reliability
If conventional sealing components are used with the floating piston, then the seal is achieved, but mechanical stresses and noise increase
Solution Approach 1:
The patent replaces conventional mechanical sealing components (rubber gaskets, metal rings) with a magnetic field-based sealing mechanism using the magnetic bushing. The tapered portions create magnetic gradients that provide sealing force without mechanical contact, eliminating the friction, wear, and noise associated with traditional mechanical seals while maintaining reliable sealing.
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 solution enables higher fluid pressurization with reduced mechanical stresses and noise, maintaining compact dimensions and low production costs, ensuring high reliability and performance with minimal magnetic material usage.
Implementation Method 1
the presence of a coil that cooperates with a couple of magnetic bearings; the coil is electrically powered and causes the axial movement of the floating piston
Implementation Method 2
Incorporating a magnetic bushing made of low magnetic residual steel with tapered portions and spacer means to enhance magnetic efficiency
Implementation Method 3
the coil is electrically powered and causes the axial movement of the floating piston with an alternate motion
Implementation Method 4
minimizing noise through reduced contact between moving parts
Data Source
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AI summary
A motor pump of the hydraulic-electromagnetic type with floating piston, comprises a container body partly delimited in its external part, by a coil, an inlet duct and an opposite outlet duct located in said body, a couple of opposite magnetic bearings spaced between them and placed between said body and coil, a delivery piston placed inside the body and sliding inside it, said delivery piston being supported by a front and a rear springs and a magnetic bushing placed in the central lower part of the container body facing the inlet duct; the magnetic bushing presents an upper tapered portion facing the delivery piston in operative conditions.