HVAC Temperature Control to Reduce Combustion Resonance Noise
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Solution Overview
Problem
HVAC systems experience combustion resonance, leading to objectionable noises during ignition or combustion, which affects user comfort and has not been satisfactorily addressed by mechanical design solutions.
Innovation Solution
A control system that uses temperature sensing devices to measure the temperature of a heating apparatus and compares it to predetermined limits, performing controlled actions such as adjusting the operation of the blower, inducer, gas valve, or ignition sequence to maintain the temperature within a desired range, thereby reducing or eliminating combustion resonance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If mechanical design solutions are implemented to address combustion resonance, then the structural integrity of the HVAC system is maintained, but the combustion resonance noise problem persists
Solution Approach 1:
The patent replaces mechanical design solutions with a control system that uses temperature sensing devices and a control device to monitor and adjust operational parameters. This substitution of mechanical approaches with control-based methods addresses the combustion resonance noise without requiring complex mechanical modifications to the HVAC system structure.
Solution Approach 2:
The control device adjusts operational parameters of the heating apparatus based on temperature measurements to eliminate combustion resonance. By changing operational parameters rather than mechanical design parameters, the system resolves the noise issue while maintaining structural integrity and avoiding increased mechanical complexity.
2Productivity
If the heating apparatus operates at higher temperatures to improve heating efficiency, then energy efficiency is improved, but combustion resonance occurs causing noise and discomfort
Solution Approach 1:
The system uses temperature sensing devices to continuously monitor the temperature of the heating apparatus and provides feedback to the control device. This feedback mechanism allows the system to maintain optimal heating efficiency while detecting temperature conditions that precede combustion resonance, enabling preventive adjustment of operational parameters to eliminate resonance before it occurs.
Solution Approach 2:
The control device takes preliminary action by adjusting operational parameters before combustion resonance actually occurs. By monitoring temperature trends and anticipating resonance conditions, the system preemptively modifies operation to prevent the harmful noise while maintaining heating efficiency.
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 control system effectively reduces or eliminates combustion resonance by maintaining the heating apparatus within a predetermined temperature range, thereby improving user comfort and operational efficiency.
Implementation Method 1
a temperature sensing device operably coupled to a burner assembly
Data Source
AI summary
A method of controlling the temperature within a heating apparatus for eliminating or reducing combustion resonance, the method including measuring a temperature of the burner assembly; comparing the measured temperature with a predetermined temperature limit or range; determining whether the measured temperature is greater than a predetermined temperature limit or range; performing a controlled action if the measured temperature is greater than the predetermined temperature limit or range.