Removable Dielectric Sheath Applicator for Microwave Coating Activation

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Solution Overview

Problem

Existing applicators for thermally activating coating materials face challenges with complex and time-consuming cleaning processes due to contamination, which can lead to arcing and equipment damage, and require additional space and cost for separate drive devices.

Innovation Solution

An applicator design featuring a removable dielectric sheath to guide the coating material, with a waveguide that conducts electromagnetic waves and a cover to contain contaminants, allowing for easy cleaning and replacement, and a compact rectangular cross-section to minimize energy loss and reduce installation space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the applicator uses electromagnetic waves to thermally activate the functional layer, then the accuracy and adaptability of energy input are improved, but the risk of harmful electromagnetic radiation and contamination leading to arcing increases

Engineering Contradiction:
Improveaccuracy of energy inputVSAvoidharmful electromagnetic radiation
Core Design Contradiction:
Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

A dielectric member is introduced as an intermediary between the electromagnetic wave source and the coating material. This dielectric member guides and encapsulates the coating material through the applicator, allowing electromagnetic waves to thermally activate the functional layer while preventing direct exposure of contaminants to the waveguide and reducing harmful radiation escape.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If the applicator is designed with shielding components and complex internal structures to contain electromagnetic waves, then the containment of harmful radiation is improved, but the complexity of cleaning and maintenance increases

Engineering Contradiction:
Improvecontainment of electromagnetic radiationVSAvoidcomplexity of cleaning process
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The applicator is segmented into modular components, with the dielectric member as a removable component that can be easily detached for cleaning. This segmentation allows the complex internal structures to remain in place while simplifying the cleaning process by allowing direct access to critical surfaces.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The dielectric member is extracted as a separate, removable component from the applicator system. This extraction allows the complex shielding structures to remain fixed while the removable dielectric member can be easily cleaned or replaced, significantly simplifying the overall maintenance process.

Inventive Principle:
Principle #2Taking out (Extraction)

3Ease of operation

If contaminants are allowed to accumulate on the waveguide and applicator surfaces, then the operational simplicity is maintained, but the risk of arcing and equipment destruction increases

Engineering Contradiction:
Improveoperational simplicityVSAvoidrisk of arcing
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The dielectric member is designed to be preliminarily positioned to guide and encapsulate the coating material before it enters the electromagnetic field zone. This preliminary action prevents contaminants from the coating material from reaching the waveguide and applicator surfaces, maintaining reliability without complicating operation.

Inventive Principle:
Principle #10Preliminary action

4Measurement precision

If a separate drive device is added to transport the coating material through the applicator, then the control and precision of material flow is improved, but the installation space and device complexity increase

Engineering Contradiction:
Improvecontrol of material flowVSAvoidinstallation space
Core Design Contradiction:
Measurement precisionVSVolume of stationary object

Solution Approach 1:

The dielectric member is designed to serve multiple functions: it acts as an electromagnetic wave guide, a coating material conveyor, and a contaminant barrier. This multi-functionality eliminates the need for separate drive devices, reducing installation space while maintaining precise control of material flow through the applicator.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

Facilitates quick and efficient cleaning, reduces production downtime, and minimizes the need for additional cleaning devices, while maintaining effective energy input and structural integrity.

Implementation Method 1

the waveguide is capable of directing electromagnetic waves, particularly microwaves, towards the coating material guided within the encapsulation

Methodology Applied
Scientific EffectElectromagnetic waves: Electromagnetic Induction

Implementation Method 2

the encapsulation is removably arranged within the base body, is configured to guide and encapsulate the coating material along a flow direction

Methodology Applied
Scientific EffectDielectric: Dielectric

Implementation Method 3

Thermal activation of the functional layer using electromagnetic waves, particularly in the microwave spectrum

Methodology Applied
Scientific EffectMicrowave radiation: Microwave Radiation

Implementation Method 4

The use of electromagnetic waves in the microwave spectrum can offer advantages in terms of accuracy and the adaptability of the energy input to the functional layer

Methodology Applied
Scientific EffectDielectric heating: Dielectric Heating

Data Source

PatentEP3461231B1Applicator for thermally activating a functional layer of a coating material
Publication Date: 2023.07.12 HOMAG GMBH
  • EP3461231B1 patent drawingFigure 1
  • EP3461231B1 patent drawingFigure 2
  • EP3461231B1 patent drawingFigure 3~4

AI summary

The present invention relates to an applicator for thermally activating a functional layer of a coating material, comprising: a base body, a waveguide, and a dielectric coating, wherein the coating is removably arranged in the base body, the coating is designed to guide and enclose the coating material along a through-direction, and the waveguide is capable of guiding electromagnetic waves, in particular microwaves, in the direction of the coating material guided in the coating.