Photocatalyst Filter Aperture Ratio for Ozone Decomposition
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Solution Overview
Problem
Existing image forming apparatuses face inefficiencies in decomposing ozone gas and volatile organic compounds (VOC), and filters supporting photocatalysts often have high ventilation resistance, leading to insufficient heat dissipation.
Innovation Solution
A photocatalyst filter with a sheet-like substrate and a photocatalyst layer that exhibits photocatalytic action under visible light, featuring an aperture ratio of 35% to 80%, allowing for efficient decomposition of ozone gas and VOC while minimizing ventilation resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a filter supporting a photocatalyst is used to remove ozone gas or VOC, then harmful substance removal is improved, but ventilation resistance increases and exhaust efficiency deteriorates
Solution Approach 1:
The filter substrate is designed with a specific aperture ratio (35% or more and 80% or less) to create an optimized porous structure. This allows sufficient photocatalyst coverage for effective ozone gas and VOC decomposition while maintaining adequate air permeability to prevent excessive ventilation resistance and preserve exhaust efficiency.
2Object-affected harmful factors
If a filter with high photocatalyst coverage is used to decompose ozone gas or VOC, then decomposition efficiency is improved, but ventilation resistance increases and heat dissipation is suppressed
Solution Approach 1:
The aperture ratio parameter is optimized to 35% or more and 80% or less, representing a specific range that balances photocatalyst coverage for effective decomposition with sufficient open area for air flow. This parameter optimization ensures both high decomposition efficiency and adequate heat dissipation capacity.
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 photocatalyst filter effectively decomposes ozone gas and VOC, preventing overheating and ensuring proper heat dissipation in image forming apparatuses by reducing ventilation resistance and enhancing photocatalytic activity.
Implementation Method 1
The photocatalyst layer exhibits a photocatalytic action by receiving light having a wavelength of 400 nm or more
Data Source
AI summary
The present disclosure provides a photocatalyst filter that can efficiently decompose and eliminate ozone gas or VOC and has a low ventilation resistance. The photocatalyst filter includes a sheet-like filter substrate and a photocatalyst layer supported by the filter substrate. The photocatalyst layer exhibits a photocatalytic action by receiving light having a wavelength of 400 nm or more. The photocatalyst filter has an aperture ratio of 35% or more and 80% or less.