Inclined Electromagnetic Mover for Molten Metal Flow Control

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Solution Overview

Problem

Existing methods for stirring and mixing molten metals, such as those used in recycling aluminum, often result in suboptimal flow patterns that hinder the integration of non-melted metal into molten metal, leading to inefficient melting and poor heat distribution.

Innovation Solution

The use of an electromagnetic mover with a primary motion axis or longitudinal axis inclined relative to the vertical in multiple planes, allowing for controlled magnetic field configurations to generate specific flow zones within a container, optimizing the flow of molten metal and facilitating the introduction and mixing of non-melted metal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional electromagnetic movers are used to stir molten metal, then stirring action is achieved, but the flow patterns are suboptimal and fail to effectively draw non-melted metal into molten metal

Engineering Contradiction:
Improvemelting efficiencyVSAvoidflow pattern effectiveness
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The electromagnetic mover is inclined at an angle of 10-45 degrees relative to the vertical axis, creating an asymmetric configuration that generates optimized flow patterns. This asymmetric positioning enables the device to effectively draw non-melted metal into molten metal while maintaining reliable stirring action, resolving the contradiction between melting efficiency and flow pattern effectiveness.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The invention introduces a spatial dimension by inclining the electromagnetic mover at specific angles in both azimuth and elevation. This dimensional adjustment transforms the traditional vertical stirring action into a multi-directional flow pattern that enhances the drawing of non-melted metal into molten metal, thereby improving both productivity and reliability simultaneously.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Temperature

If electromagnetic movers are used to create flow patterns for melting, then some stirring action is achieved, but heat distribution and material dispersion remain insufficient

Engineering Contradiction:
Improveheat distributionVSAvoidmelting rate
Core Design Contradiction:
TemperatureVSProductivity

Solution Approach 1:

The inclined configuration of the electromagnetic mover creates asymmetric flow patterns that enhance both heat distribution and material dispersion. The angled positioning generates circulation patterns that systematically move molten metal through the furnace, improving thermal uniformity while maintaining high melting rates, thus resolving the contradiction between heat distribution quality and melting productivity.

Inventive Principle:
Principle #4Asymmetry

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 approach enhances the flow patterns to effectively draw non-melted metal into molten metal, promotes efficient melting, and ensures better heat distribution within the furnace, improving the overall processing efficiency.

Implementation Method 1

use electromagnets to generate moving magnetic fields within molten metal and as a consequence generate motion within the molten metal

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

electromagnetic mover has a primary motion axis, the primary motion axis being aligned along the direction of the maximum linear force generated by the electromagnetic stirrer

Methodology Applied
Scientific EffectLorentz force: Lorentz Force

Implementation Method 3

generate moving magnetic fields within molten metal and as a consequence generate motion within the molten metal. The movement causes stirring of the molten metal within its container

Methodology Applied
Scientific EffectElectromagnetic stirring: Electromagnetic Stirring

Data Source

PatentUS11740024B2Melting and/or stirring of molten metals
Publication Date: 2023.08.29 ALTEK EURO
  • US11740024B2 patent drawing
  • US11740024B2 patent drawing
  • US11740024B2 patent drawing

AI summary

A method and apparatus for moving molten material within a container are provided. The method comprising: providing apparatus including an electromagnetic mover adjacent a part of the container, wherein the electromagnetic mover has a primary motion axis, the primary motion axis being aligned along the direction of the maximum linear force generated by the electromagnetic stirrer; applying a current to the electromagnetic mover such that changes in magnetic field configuration cause movement of the molten metal within the container; wherein the primary motion axis is inclined relative to the vertical in two different planes; or wherein the longitudinal axis is inclined relative to the vertical in two different planes. The method and apparatus are designed to generate a plurality of different flow zones within the container and/or larger container, the different flow zones differing from one another in terms of their position in the container and/or larger container and/or the different flow zones differing from one another in terms of the relative flow velocities and/or the different flow zones differing from one another in terms of the relative directions of flow.