Segmented Duct Mechanism for Uniform Heat Insulation in Image Forming Apparatus
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Solution Overview
Problem
The existing duct mechanisms in image forming apparatuses suffer from uneven air flow and inadequate heat insulation, leading to non-uniform heat distribution and insulation inefficiencies around the fixing unit.
Innovation Solution
A duct mechanism with a first duct divided into multiple air flow paths, adjacent to the fixing unit, and an exhaust fan to discharge air outside, ensuring uniform air flow and effective heat insulation by partitioning the duct into separate sections to manage heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a single exhaust duct is used to insulate heat from the fixing device, then heat insulation is achieved, but air flow becomes uneven and heat insulation effectiveness is reduced
Solution Approach 1:
The exhaust duct is divided into multiple air flow paths (first air flow path and second air flow path) that are positioned at different locations relative to the fixing device. This segmentation allows air to flow uniformly through separate channels, preventing the uneven air flow that occurs in single-duct configurations while maintaining effective heat insulation around the fixing device.
2Device complexity
If air flow direction in the exhaust duct is not aligned, then the duct structure is simple, but heat insulation becomes uneven and ineffective
Solution Approach 1:
The exhaust duct is segmented into multiple air flow paths with each path having its own dedicated exhaust fan. This segmentation ensures that air flow direction is aligned within each path, achieving uniform heat insulation without requiring complex directional control mechanisms.
Solution Approach 2:
Each air flow path is configured with specific local characteristics - the first air flow path is positioned to insulate one side of the fixing device while the second air flow path insulates another side. This local quality approach ensures uniform heat insulation across the entire fixing device by addressing each location's specific thermal insulation needs.
3Temperature
If multiple air flow paths are created in the exhaust duct, then heat insulation uniformity is improved, but device complexity increases
Solution Approach 1:
The exhaust duct is divided into multiple air flow paths, with each path equipped with its own exhaust fan. This segmentation approach achieves uniform heat insulation by allowing independent air flow control in each path, while the modular structure keeps the overall system manageable and not excessively complex.
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 ensures uniform air flow and effective heat insulation of the fixing unit, preventing temperature unevenness and maintaining the internal temperature of the image forming apparatus.
Implementation Method 1
The inside of the first duct is divided into a plurality of air flow paths
Implementation Method 2
a first duct disposed at a position adjacent to the fixing unit... ensures uniform air flow and effective heat insulation of the fixing unit, preventing temperature unevenness
Data Source
AI summary
An image forming apparatus includes an apparatus body and an exhaust unit. The exhaust unit includes a first duct and a first exhaust fan provided in the first duct. The first exhaust fan suctions air inside the first duct and sends the suctioned air to an outside of the apparatus body. The first duct is disposed at a position adjacent to the fixing unit. The first duct is divided into a plurality of air flow paths.