Heating Device Support Plate Recess for Thermal Expansion Gap Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing medium heating devices face issues due to thermal expansion of the support portion, which causes gaps between the support face and the medium, leading to temperature detection errors and resulting in either excessively high or low temperatures of the medium, affecting the heating process.
Innovation Solution
A medium heating device with a support portion featuring a metal plate having a bent end portion fixed to multiple fixing portions, where the temperature detector is positioned between these fixing portions, minimizing the impact of thermal expansion-induced gaps and ensuring accurate temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the support portion is made of metal plate to ensure strength and stability, then the structural strength is improved, but thermal expansion causes gaps between the support face and medium leading to temperature detection errors
Solution Approach 1:
The patent applies local quality by creating a recessed portion in the metal plate at the temperature detection position. This local structural modification allows the detection position to be lower than surrounding areas, ensuring continuous contact between the medium and the support face at the detection point even when thermal expansion occurs. This resolves the contradiction by maintaining measurement precision locally without compromising overall structural strength.
2Stability of the object's composition
If the support portion is fixed rigidly to prevent movement, then positional stability is improved, but thermal expansion creates gaps that cause temperature detection errors
Solution Approach 1:
The patent applies preliminary anti-action by pre-configuring the recessed portion in the metal plate before thermal expansion occurs. This recessed structure anticipates the gap formation that would result from thermal expansion and counteracts it by ensuring the medium maintains contact with the support face at the detection position. The recessed portion acts as a compensatory feature that prevents detection errors before they can occur.
3Measurement precision
If the detector is positioned on the support face to detect medium temperature, then temperature detection accuracy is improved, but thermal expansion of the metal plate creates gaps at the detection position
Solution Approach 1:
The patent creates a local structural feature (recessed portion) specifically at the temperature detection position. This localized modification ensures that while other parts of the support face may gap due to thermal expansion, the detection position maintains reliable contact with the medium. The recessed portion makes the detection area have different geometric properties than the surrounding structure, solving the contradiction between detection accuracy and reliability.
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 stabilizes the temperature of the medium by reducing errors in temperature detection, preventing damage from excessive heat and ensuring sufficient drying, thereby maintaining the quality of the medium being heated.
Implementation Method 1
a heating unit configured to heat the medium supported by the support portion
Implementation Method 2
a heating unit configured to heat the medium supported by the support portion
Implementation Method 3
a detector configured to detect a temperature of the support portion
Implementation Method 4
the support portion that deforms due to thermal expansion forms a gap between a portion of the support face and the medium
Data Source
AI summary
A medium heating device includes a support portion configured to support a medium being transported, a heating unit configured to heat a medium supported by the support portion, and a detector configured to detect a temperature of the support portion. The support portion includes a metal plate including a first surface as the support face, an end portion of the metal plate is bent toward an opposite side to the first surface, the metal plate is fixed by a fixing portion and a fixing portion next to the fixing portion in a width direction, and a detection position of the detector is set to a position between the mutually adjacent fixing portions in the width direction.