Heating Device Channel Member with Differential Heat Absorption
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Solution Overview
Problem
Existing heating devices in printers face challenges in achieving uniform drying of liquids on sheets due to temperature variations along the channel member, leading to inefficient drying processes.
Innovation Solution
The heating device incorporates a blower with a channel member where end portions have higher heat absorption properties than the central portion, with the end portions facing the heater, to enhance temperature uniformity and efficiency in air blowing temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single uniform channel member is used in the blower, then the structure is simple and easy to manufacture, but temperature uniformity along the channel is poor leading to inefficient drying
Solution Approach 1:
The channel member is designed with non-uniform heat absorption properties along its length, where end portions have higher heat absorption coefficients than the central portion. This local differentiation compensates for heat loss at the ends and ensures uniform temperature distribution across the air stream, resolving the contradiction between structural simplicity and temperature uniformity.
Solution Approach 2:
The heat absorption parameter of the channel member is varied along its longitudinal direction. By changing the material properties or surface characteristics of different sections of the channel member, the system achieves uniform temperature distribution without requiring complex active control mechanisms.
2Manufacturing precision
If end portions of the channel member have higher heat absorption property, then temperature uniformity improves, but manufacturing complexity increases
Solution Approach 1:
Instead of requiring complex active control systems, the invention uses passive local quality differentiation through material selection or surface treatment of specific regions. The end portions can be made with different thermal properties than the central portion, achieving temperature uniformity through inherent material characteristics rather than complex manufacturing processes.
Solution Approach 2:
The channel member may utilize composite construction or differential material application where end portions are made from materials with higher heat absorption coefficients compared to the central portion. This approach achieves the desired thermal performance while maintaining manufacturing feasibility through established material science techniques.
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 reduces temperature variations along the channel member, resulting in a more uniform and efficient drying process by increasing the heat absorption at the end portions, thus improving the drying efficiency.
Implementation Method 1
each of the end portions having higher heat absorption property than the central portion, and each of end portions of the channel member faces the heater
Implementation Method 2
a printer applies a liquid onto a printing object such as a sheet to perform a printing operation. The printer includes a heater to heat the sheet onto which a liquid has been applied to promote drying of the liquid applied onto the sheet
Data Source
AI summary
A heating device includes a blower configured to blow air, the blower comprising a channel member defining a channel of the air, and a heater disposed outside the channel member. The channel member has end portions and a central portion in a longitudinal direction, each of the end portions having higher heat absorption property than the central portion, and said each of end portions of the channel member faces the heater.