Inductor with Extractable Insulating Body for In-Situ Maintenance

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Solution Overview

Problem

Existing inductors require onerous maintenance operations, including reconditioning of the insulating material and potential replacement of the entire unit, which is costly and time-consuming, especially when the insulating material wears out or the coil malfunctions.

Innovation Solution

The inductor design allows for the insulating body to be inserted and extracted from the containing seating, enabling it to be replaced or reconditioned without removing the entire inductor, and the coil can also be accessed and maintained directly in the production plant.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the insulating material is integrated into a monolithic structure with the coil, then the structural integrity and thermal insulation are improved, but the maintenance complexity and downtime increase significantly

Engineering Contradiction:
Improvestructural integrityVSAvoidmaintenance complexity
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The inductor is divided into separate modular components: the coil assembly, the insulating material, and the containing body are detachable rather than monolithic. This segmentation allows the insulating material to be removed and replaced independently without removing the entire inductor from the production line, significantly reducing maintenance complexity and downtime while preserving structural integrity during operation.

Inventive Principle:
Principle #1Segmentation

2Reliability

If the entire monolithic inductor is replaced when the insulating material wears out, then the reliability is maintained, but the loss of time and cost increase

Engineering Contradiction:
Improveoperational reliabilityVSAvoidmaintenance downtime
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The insulating material is extracted as a separate replaceable component from the coil assembly. When the insulating material wears out, it can be removed and replaced while the coil remains in place within the containing body. This extraction approach maintains operational reliability through proper insulation while eliminating the need to replace the entire inductor, significantly reducing maintenance downtime and cost.

Inventive Principle:
Principle #2Taking out (Extraction)

3Object-affected harmful factors

If the coil is embedded in refractory material, then the thermal protection is improved, but the accessibility for maintenance deteriorates

Engineering Contradiction:
Improvethermal protectionVSAvoidcoil accessibility
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The coil and refractory material are segmented into separate assemblies that can be independently accessed and maintained. The coil is mounted within the containing body and can be accessed through openings in the refractory material, allowing maintenance operations on the coil without removing the entire inductor or damaging the refractory insulation, thus maintaining both thermal protection and accessibility.

Inventive Principle:
Principle #1Segmentation

4Ease of repair

If the inductor is disassembled for maintenance, then the insulating material can be reconditioned, but the productivity decreases due to removal and reinstallation

Engineering Contradiction:
Improvereconditioning capabilityVSAvoidproduction continuity
Core Design Contradiction:
Ease of repairVSProductivity

Solution Approach 1:

The inductor is designed with modular segmentation allowing the insulating material to be removed and reconditioned in place within the containing body without removing the entire unit from the production line. This maintains productivity by avoiding removal and reinstallation operations while still enabling complete reconditioning of the insulating material, thus resolving the contradiction between repair capability and production continuity.

Inventive Principle:
Principle #1Segmentation

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 design significantly reduces maintenance time and costs by allowing in-situ maintenance, extending the useful life of the inductor, and preventing costly replacements of the entire unit.

Implementation Method 1

induction heating uses the electromagnetic induction principle to heat an electrically conductive material by Joule effect

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

induction heating uses the electromagnetic induction principle to heat an electrically conductive material by Joule effect

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 3

the insulating material serves to protect the coil thermally

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Implementation Method 4

the insulating material also performs a function of acoustic insulation and damping of the vibrations to which the spirals of the coil are subjected

Methodology Applied
Scientific EffectVibration damping: Damping

Data Source

PatentUS12309903B2Inductor and corresponding maintenance method
Publication Date: 2025.05.20 DANIELI AUTOMATION SPA
  • US12309903B2 patent drawing
  • US12309903B2 patent drawing
  • US12309903B2 patent drawing

AI summary

An inductor to heat, by electromagnetic induction, an electrically conductive body, including an induction body, hollow inside, suitable to generate an electromagnetic field, the internal surface of which defines a containing seating, disposed through in a longitudinal direction.