Magnetic Separation Unit with Flow Recirculation for Low-Pressure Capture
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Solution Overview
Problem
Existing fluid separation technologies face inefficiencies in removing ferromagnetic particles due to high energy consumption, clogging issues, and low Clean Air Delivery Rate (CADR), particularly in environments with high concentrations of such particles.
Innovation Solution
A fluid separation unit with a housing, inlet and outlet ports, and a conduit containing a magnetic assembly of parallel rod-shaped permanent magnets covered by a magnetizable structure, featuring a flow entrainment section that reduces fluid velocity and recirculates a portion of the fluid to enhance particle capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical fibrous filters are used to remove particles by blocking airflow, then particle removal capability is improved, but energy consumption increases due to high pressure drop
Solution Approach 1:
The patent replaces mechanical filtration with magnetic field-based particle removal. Magnetic elements create magnetic fields that attract and capture ferromagnetic particles without blocking airflow, eliminating the need for tight fiber structures that cause high pressure drops and energy consumption.
Solution Approach 2:
The patent introduces magnetic fields as an intermediary mechanism between the airflow and particle removal. The magnetic field acts as a mediator that selectively attracts ferromagnetic particles from the fluid stream without requiring direct mechanical contact or blockage of the airflow path.
2Use of energy by moving object
If magnetic fields are used to remove ferromagnetic particles, then energy efficiency is improved, but particle capture effectiveness decreases due to high-velocity particles
Solution Approach 1:
The patent employs a rotating magnetic field mechanism where magnetic elements rotate to create dynamically changing magnetic fields. This rotation allows the magnetic field to continuously interact with particles in the airflow, improving capture effectiveness for high-velocity particles while maintaining energy efficiency through the rotational motion rather than requiring high-power static fields.
Solution Approach 2:
The patent uses periodic rotational motion of magnetic elements to create oscillating magnetic fields. This periodic action allows the magnetic field to repeatedly attract and release particles, enhancing capture effectiveness over time while consuming less energy than continuous high-intensity static magnetic fields would require.
3Reliability
If magnetic filters are used to trap magnetic particles, then particle removal is improved, but device complexity increases due to clogging issues requiring high pressure difference
Solution Approach 1:
The patent replaces mechanical trapping mechanisms with magnetic field-based attraction. By using rotating magnetic elements that create dynamic magnetic fields, the system captures particles through magnetic attraction rather than physical blockage, eliminating the need for high pressure differences to force air through clogged filters.
Solution Approach 2:
The patent employs dynamic rotation of magnetic elements to prevent clogging. The rotating motion continuously changes the magnetic field configuration, allowing captured particles to be periodically released and re-captured, maintaining open flow paths and eliminating the need for high pressure differences that would be required for static magnetic filters.
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 provides an energy-efficient method to remove ferromagnetic particles effectively, reducing clogging and requiring lower pressure differences, suitable for environments with high particle concentrations.
Implementation Method 1
at least one permanent magnet arranged to attract magnetic or magnetizable particles in the fluid
Implementation Method 2
a magnetic assembly of parallel rod-shaped permanent magnets
Implementation Method 3
permanent magnets covered by a magnetizable structure
Implementation Method 4
a flow entrainment section that reduces the velocity of a portion of the fluid and recirculates the fluid
Data Source
AI summary
A fluid separation unit that comprises a housing having an inlet port for receiving a fluid, an outlet port for discharging fluid and a conduit extending between the inlet port and the outlet port is disclosed. The fluid separation unit comprises at least one permanent magnet arranged to attract magnetic or magnetizable particles in the fluid. The at least one permanent magnet is at least partly covered by a magnetizable covering structure. A flow entrainment section is arranged inside the housing. The flow entrainment section is arranged and configured to reduce the velocity of a portion of the fluid by at least 50% and recirculate fluid inside the conduit.