Drying Device Heater Reflector Infrared Energy Redirection

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Solution Overview

Problem

Existing drying devices require higher heater output due to inefficiencies in infrared ray distribution, with a significant portion of radiated energy being absorbed by furnace walls rather than the film.

Innovation Solution

A drying device configuration featuring a heater with an inner and outer tube, where electromagnetic waves are radiated through the outer tube, and a reflector that reflects a portion of these waves towards the film, optimizing energy delivery and reducing the need for increased heater output.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the heater output is increased to compensate for infrared rays reaching furnace walls, then the drying efficiency is improved, but the energy consumption increases

Engineering Contradiction:
Improvedrying efficiencyVSAvoidenergy consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent converts the harmful effect of infrared rays reaching furnace walls (energy loss) into a beneficial effect by adding reflectors that redirect these rays back to the film. The reflectors transform what was previously wasted energy into useful drying energy, improving efficiency without increasing heater output

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The reflector acts as an intermediary element between the heater and the film, redirecting infrared rays that would otherwise be lost to furnace walls. This mediator component enables the system to reuse energy that would otherwise be wasted, reducing overall energy consumption while maintaining drying efficiency

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If the heater output is increased to ensure sufficient infrared rays reach the film, then the drying effectiveness is improved, but the device complexity increases

Engineering Contradiction:
Improvedrying effectivenessVSAvoiddevice complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The reflector serves as a relatively simple intermediary component that redirects infrared rays without requiring complex control systems or multiple heating elements. This simple geometric addition provides significant performance improvement while maintaining low device complexity

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent uses passive geometric reflection instead of active control mechanisms to optimize energy distribution. Rather than using complex mechanical or electronic systems to control heat distribution, the reflectors use fixed geometric shapes to redirect energy, simplifying the overall system

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 configuration allows for more efficient energy transfer to the film, reducing the required heater output while ensuring effective drying of the solvent-based film.

Implementation Method 1

a heater disposed in the drying space to face a surface of the film moving in the drying space, comprising an inner tube and an outer tube, and configured to radiate electromagnetic waves through the outer tube

Methodology Applied
Scientific EffectInfrared radiation: Infrared Radiation

Implementation Method 2

configured to radiate electromagnetic waves in a wavelength band below a predetermined wavelength to the film

Methodology Applied
Scientific EffectThermal radiation: Thermal Radiation

Implementation Method 3

a reflector at least partially covering the heater and configured to reflect at least a part of the electromagnetic waves radiated from the outer tube of the heater toward the film moving in the drying space

Methodology Applied
Scientific EffectElectromagnetic wave reflection: Reflection

Implementation Method 4

a surface temperature of the outer tube is maintained at 200 degrees or less by a fluid flowing between the inner tube and the outer tube

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 5

configured to absorb electromagnetic waves in a wavelength band equal to or above the predetermined wavelength

Methodology Applied
Scientific EffectElectromagnetic wave absorption: Absorption (EM radiation)

Data Source

PatentUS20240240858A1Drying device
Publication Date: 2024.07.18 NGK INSULATORS LTD
  • US20240240858A1 patent drawing
  • US20240240858A1 patent drawing
  • US20240240858A1 patent drawing

AI summary

A drying device may include: a body defining a drying space therein; a heater disposed in the drying space to face a surface of the film moving in the drying space, including an inner tube and an outer tube, and configured to radiate electromagnetic waves through the outer tube, wherein a surface temperature of the outer tube is maintained at 200 degrees or less; and a reflector at least partially covering the heater and configured to reflect at least a part of the electromagnetic waves radiated from the outer tube of the heater toward the film moving in the drying space. The heater may be configured to radiate electromagnetic waves in a wavelength band below a predetermined wavelength to the film and is configured to absorb electromagnetic waves in a wavelength band equal to or above the predetermined wavelength.