Air heating apparatus
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Solution Overview
Problem
In air heating apparatuses, there is a risk of gas leaking from the combustion area to the air flow area, posing a significant safety hazard due to the potential transfer of fuel gas or combustion gas to the heating region.
Innovation Solution
The apparatus includes a burner for combustion, a heat exchange part to heat water, a heating heat exchanger for air heating, a fan for air circulation, a condensed water receiver, and a condensed water trap outside the case to prevent gas leakage by separating the combustion and air flow areas effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the combustion area and air flow area are separated, then safety is improved, but device complexity increases
Solution Approach 1:
The combustion chamber is divided into multiple sections with combustion occurring in separate zones (first combustion chamber and second combustion chamber), while the air flow path is segmented through different passages. This segmentation physically separates the combustion area from the air flow area, preventing gas leakage while maintaining functional efficiency.
Solution Approach 2:
A water wall structure serves as an intermediary barrier between the combustion area and air flow area. The water wall absorbs heat from combustion gases and transfers it to water circulating through tubes, creating a thermal and physical barrier that prevents direct contact between combustion products and the air flow path.
2Productivity
If the combustion chamber is divided into multiple sections, then heat exchange efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The combustion chamber is divided into multiple combustion sections (first and second combustion chambers) with separate burners and heat exchange zones. This segmentation allows for distributed heat generation and improved thermal efficiency while maintaining a modular structure that can be manufactured and assembled in standardized units.
Solution Approach 2:
The water wall structure serves multiple functions simultaneously: it acts as a heat transfer medium, a structural support element, a barrier separating combustion from air flow, and a condensation collection surface. This multi-functionality reduces the need for additional separate components, thereby simplifying manufacturing despite the divided combustion chamber design.
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 design reduces the risk of gas leakage, enhancing safety by ensuring that combustion gases do not enter the air heating section, while maintaining efficient heating through the heat exchange process.
Implementation Method 1
a heat exchange part configured to receive heat from a combustion gas generated by the combustion reaction so as to heat water
Implementation Method 2
a heating heat exchanger configured to receive the water heated by the heat exchange part so as to be heat-exchanged with air to be discharged for heating
Implementation Method 3
a fan configured to blow the air to the heating heat exchanger
Implementation Method 4
a condensed water receiver configured to collect and discharge condensed water generated in the heat exchange part
Data Source
AI summary
An air heating apparatus includes a burner configured to cause combustion reaction, a heat exchange part configured to receive heat from a combustion gas generated by the combustion reaction so as to heat water, a heating heat exchanger configured to receive the water heated by the heat exchange part so as to be heat-exchanged with air to be discharged for heating, a fan configured to blow the air to the heating heat exchanger, a condensed water receiver configured to collect and discharge condensed water generated in the heat exchange part, a case in which the burner, the heat exchange part, the heating heat exchanger, the fan, and the condensed water receiver are embedded, and a condensed water trap disposed outside the case and configured to receive the condensed water transferred from the condensed water receiver so as to provide a trap configured to block leakage of the combustion gas.