Fireplace
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Solution Overview
Problem
Existing fireplaces with biomass and wood fuels face challenges in reducing emissions effectively, as external catalytic converters are not seamlessly integrated, leading to inefficiencies in exhaust gas treatment.
Innovation Solution
A catalytic converter module with porous catalyst elements, spaced at specific distances to create a flow gap, is integrated within the fireplace's exhaust gas duct or dome, allowing for easy assembly and optimal exhaust gas treatment, using catalyst plates designed from wire mesh or ceramic foam coated with catalytically active materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If external catalytic converters are used, then emission reduction is achieved, but integration efficiency and exhaust gas treatment effectiveness deteriorate
Solution Approach 1:
The patent integrates the catalytic converter module directly into the fireplace structure, merging the heating device and emission treatment device into a single integrated system. The catalyst module is positioned within the exhaust gas flow path of the fireplace, eliminating the need for separate external converters and improving integration efficiency.
Solution Approach 2:
The catalytic converter elements are nested within the fireplace's exhaust gas duct structure. The module is inserted into the existing fireplace architecture, with catalyst plates arranged in a compact configuration that fits within the available space without requiring additional external components.
2Productivity
If catalytic converter elements are placed close together, then exhaust gas treatment efficiency is improved, but flow resistance increases and blockages occur
Solution Approach 1:
The catalytic converter module is divided into multiple separate catalyst plates arranged in sequence. Each plate is spaced from the others by approximately 5-10 mm, creating individual flow channels that prevent blockages while maintaining high treatment efficiency through multiple catalytic stages.
Solution Approach 2:
The catalyst plates are designed with specific local characteristics including porous structure and selective spacing. The 5-10 mm gaps between plates are optimized to provide adequate flow passages while maintaining close proximity for efficient catalytic conversion. This local optimization balances treatment efficiency with flow resistance management.
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 solution reduces CO and fine dust emissions through diffusion, maintaining low flow resistance and ensuring adequate exhaust gas supply, enhancing emission control without blockages.
Implementation Method 1
a diffusion effect in the form of a molecular movement of gas molecules and also fine dust can cause a reduction in CO and also a reduction in fine dust and hydrocarbon emissions
Implementation Method 2
These can consist of a wire mesh or a ceramic foam and be coated with a catalytically active material
Data Source
Figure 1
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AI summary
The invention relates to a fireplace, in particular a fireplace or tiled stove, fireplace insert or the like. Device for burning solid fuels such as logs, wood pellets such as brickets or pellets or mineral fuels such as coal or anthracite, with a fireplace body in which one of side walls, a A rear wall, a floor and a combustion chamber door are provided, and with an exhaust gas duct connected to the combustion chamber, which is preferably at least partially arranged within an exhaust gas dome, with the exhaust duct being assigned a catalyst module (Fig. 1).