Multi-ring gas burner
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Solution Overview
Problem
Existing gas burners experience flame lift issues at high flow rates, which existing solutions like ledges or retention ports either fail to adequately address or come with drawbacks such as increased costs, thermal issues, or restricted secondary air flow, leading to poor combustion and flame coalescence.
Innovation Solution
A multi-ring gas burner design featuring a burner head, cap with a ledge over flame ports, and a cross-lighting duct that ensures stable flame retention at high flow rates without restricting secondary air, using a burner base and cap formed from materials that minimize thermal expansion and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ledges are added to the burner head to reduce flame lift, then flame stability is improved, but the burner head material cost increases and thermal management becomes problematic
Solution Approach 1:
The burner is divided into separate functional components: the burner head for fuel delivery and the cap with ledge for flame stabilization. This segmentation allows the ledge to be part of the cap rather than the burner head, addressing the material cost and thermal management issues while maintaining flame stability.
Solution Approach 2:
The ledge function is extracted from the burner head and placed on the cap. This extraction resolves the contradiction by separating the flame stabilization function from the fuel delivery component, allowing each to be optimized independently for cost and performance.
2Reliability
If retention ports are added to stabilize flames, then flame lift is reduced, but secondary air flow is restricted causing poor combustion
Solution Approach 1:
The burner system is segmented into fuel delivery (burner head) and flame stabilization (cap with ledge) functions. This segmentation allows the ledge to stabilize flames without interfering with secondary air flow paths, avoiding the combustion quality issues associated with retention ports.
3Reliability
If retention ports are drilled into the burner body, then flame stability is improved, but manufacturing cost increases and ports clog easily
Solution Approach 1:
The flame stabilization function is segmented into a separate cap component rather than being integrated into the burner body. This eliminates the need for drilled retention ports in the burner body, reducing manufacturing complexity and eliminating clogging issues while maintaining flame stability.
Solution Approach 2:
The flame stabilization mechanism is extracted from the burner body and placed on the cap. This extraction eliminates the harmful effects of drilled ports (clogging and manufacturing cost) while preserving the beneficial flame stabilization effect through the ledge 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
The multi-ring gas burner effectively stabilizes flames at high flow rates while maintaining efficient secondary air entrainment, improving combustion and reducing operational costs through a stable and efficient design.
Implementation Method 1
The ledges reduce a vertical velocity component of fuel flowing by the ledges in order to stabilize and reduce flame lift at high flow rates
Implementation Method 2
The burner head is positioned on the burner base such that the burner base and the burner head define a fuel chamber of the outer burner ring
Implementation Method 3
The plurality of flame ports extend from the fuel chamber of the outer burner ring to an outer portion of the outer burner ring
Data Source
AI summary
A multi-ring gas burner includes a burner head positioned on a burner base such that the burner base and the burner head define a fuel chamber of an outer burner ring. A cap is positioned on the burner head. The cap has a ledge that extends over a plurality of flame ports of the outer burner ring.