Strip Material Treatment Apparatus with Segmented Hot Air Ducts
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Solution Overview
Problem
Induction heating systems for strip material treatment suffer from nonuniform temperature distribution in the widthwise direction due to coil shape and arrangement, limiting their effectiveness for advanced heat treatment and requiring supplementation with indirect heating methods to achieve uniformity.
Innovation Solution
A strip material treatment apparatus that uses hot air blowing nozzles aligned in the conveyance direction, segmented ducts with adjustable dampers, and a temperature regulating pressure pad to control thermal dose and airflow, compensating for temperature variations and eliminating the need for individual heater current control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If induction heating is used for heat treatment, then thermal dose per unit area increases and apparatus size can be reduced, but temperature distribution in the widthwise direction becomes nonuniform
Solution Approach 1:
The patent applies local quality by segmenting the heating system into multiple independent heating zones along the conveyance direction. Each zone has adjustable heating parameters that can be optimized for local temperature distribution requirements, thereby achieving uniform overall temperature while maintaining compact apparatus size
Solution Approach 2:
The heating apparatus is divided into multiple heating zones with independent control. This segmentation allows different regions to compensate for each other's temperature nonuniformities, achieving uniform temperature distribution across the strip material width while keeping the apparatus compact
2Temperature
If induction heating coils are redesigned to reduce temperature variation, then temperature uniformity improves, but device complexity increases and advanced heat treatment requirements are not met
Solution Approach 1:
Instead of complicating coil design, the patent segments the heating system into multiple zones with independent control parameters. This allows temperature uniformity to be achieved through coordinated control of multiple simple zones rather than through complex single-zone coil geometry
Solution Approach 2:
The patent introduces dynamic control capabilities where heating parameters in each zone can be independently adjusted based on real-time temperature measurements. This dynamic adjustment mechanism achieves temperature uniformity without requiring statically complex coil arrangements
3Temperature
If multiple independent heaters are used to compensate temperature variation, then temperature uniformity improves, but control complexity increases due to individual current control requirements
Solution Approach 1:
The patent merges the control functions of multiple heating zones into a unified control system that coordinates all zones simultaneously. This integration reduces operational complexity by providing centralized control rather than requiring independent adjustment of each heater's current
Solution Approach 2:
The patent implements feedback control where temperature measurements from multiple points are fed back to the control system, which then automatically adjusts heating parameters across all zones to maintain uniform temperature distribution, simplifying operation through automated closed-loop control
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 apparatus achieves uniform temperature distribution across the strip material, reducing size and increasing the thermal dose per unit area, allowing induction heating to bear a greater load and minimizing the reliance on indirect heating systems.
Implementation Method 1
Strip material treatment apparatuses using induction heating
Implementation Method 2
induction heating is a direct-heating system that generates heat in the strip material itself
Implementation Method 3
a radiation system and forced convection system, capable of performing uniform heating
Data Source
Figure 1
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AI summary
A strip material treatment apparatus (1) capable of uniforming the temperature of a strip material in the widthwise direction has a plurality of hot air blowing means (18) constituted by segmenting a circulation duct (15) having a heater (14) in the widthwise direction of the strip material (8) at the portion downstream of the heater (14) and to blow hot air against the strip material (8), temperature measuring means (20) that measures a temperature distribution in the widthwise direction of the strip material (8) in downstream of the hot air blowing means (18), and a hot air regulating means (21) that regulates the airflow quantity of hot air to be blown by adjusting the degree of opening of a damper (16) for each hot air blowing means (18) so that the temperature variation in the widthwise direction of the strip material (8) is reduced in accordance with a detection result of the temperature measuring means (20).