Surface Heater Heat Conducting Unit for End Temperature Control
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Solution Overview
Problem
Existing heating devices face challenges in reducing temperature increases at the ends of a surface heater unit in the longitudinal direction and shortening the temperature increase time, particularly when a highly heat-conductive member is used on the entire surface area opposite to the contact surface with a heating object.
Innovation Solution
A heat conducting unit is strategically placed between the center of the heater portion and the support unit in a direction crossing the longitudinal direction, utilizing thin heat pipes with high thermal conductivity to promote efficient heat conduction and reduce temperature increases at the ends of the surface heater unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a highly heat-conductive member is provided on the surface heater unit over the entire area at a side opposite to the contact surface that is in contact with the heating object, then temperature uniformity is improved, but the warm-up time increases significantly
Solution Approach 1:
The patent applies local quality by placing heat-conductive members only at specific locations (both ends and center of the longitudinal direction) rather than covering the entire surface. This localized approach provides temperature uniformity where needed while minimizing the total heat capacity added to the system, thus avoiding excessive warm-up time.
Solution Approach 2:
The heat-conductive members are segmented into discrete units positioned at specific locations (both ends and center) rather than forming a continuous layer. This segmentation allows the system to achieve temperature uniformity through strategic heat distribution points while keeping the overall thermal mass low, preventing excessive warm-up time.
2Temperature
If heat-conductive members are placed at both ends of the surface heater unit, then temperature increase at the ends is reduced, but the structural complexity increases
Solution Approach 1:
Heat-conductive members are placed only at the both ends of the surface heater unit in the longitudinal direction, addressing the specific problem of temperature increase at the ends without adding complexity across the entire structure. This localized approach minimizes structural complexity while achieving the desired temperature control.
3Temperature
If heat-conductive members are placed at the center and ends of the surface heater unit, then temperature distribution uniformity is improved, but the device complexity increases
Solution Approach 1:
Heat-conductive members are strategically placed at three specific locations (both ends and center of the longitudinal direction) rather than uniformly across the surface. This localized placement achieves temperature distribution uniformity through key heat distribution points while maintaining simple device structure.
Solution Approach 2:
The heat-conductive members are segmented into discrete units positioned at both ends and the center of the longitudinal direction. This segmentation achieves temperature distribution uniformity through strategic heat distribution points while keeping the device structure simple and avoiding continuous complex structures.
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 effectively reduces temperature increases at the ends of the surface heater unit and shortens the warm-up time, preventing thermal damage and ensuring efficient heat distribution without increasing the warm-up time required to reach a fixing temperature.
Implementation Method 1
a heat conducting unit disposed in contact with a surface of the surface heater unit at a side opposite to a side adjacent to the heating object in a region between a center of the heater portion in a direction crossing the longitudinal direction and the support unit
Implementation Method 2
utilizing thin heat pipes with high thermal conductivity to promote efficient heat conduction and reduce temperature increases at the ends of the surface heater unit
Data Source
AI summary
A heating device includes a surface heater unit including a heater portion that generates heat in a region extending in a longitudinal direction, the surface heater unit heating a heating object; a support unit that supports the surface heater unit; and a heat conducting unit disposed in contact with a surface of the surface heater unit at a side opposite to a side adjacent to the heating object in a region between a center of the heater portion in a direction crossing the longitudinal direction and the support unit.