Two Half-Shell Burner Design for Simplified Flame Piloting Assembly
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Solution Overview
Problem
Existing burners for ovens or grills with pilot flames are complex and expensive to produce due to the need for precise alignment and coupling of multiple components, leading to high production costs and low reliability.
Innovation Solution
A burner design using two half-shells with a connecting portion featuring an undulating path of depressions and elevations that automatically align during assembly, forming a hollow space for flame piloting without obstructing the pilot flame, allowing for efficient flame transfer and reduced assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If three separate elements are used to form the main chamber and auxiliary chamber with strict dimensional tolerances, then the flame transmission hollow space dimension is guaranteed, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent merges the main chamber and auxiliary chamber into a single integrated burner body formed by two half-shells, eliminating the need for three separate elements. The hollow space for flame transmission is formed by the spacing between corresponding walls of the half-shells during assembly, combining multiple functions into a unified structure that reduces manufacturing complexity while maintaining dimensional accuracy.
Solution Approach 2:
The half-shells are designed with complementary shapes that automatically define the hollow space dimension when assembled, with the spacing between corresponding walls self-determining the flame transmission channel dimensions. This self-service mechanism eliminates the need for complex precision machining of multiple separate components.
2Reliability
If two half-shells are coupled with high shape and coupling precision, then reliable pilot flame is achieved, but production costs are high
Solution Approach 1:
The patent combines the functions of multiple precision components into two simple half-shells that are easier to manufacture. The pilot flame reliability is achieved through the geometric relationship between the half-shells during assembly rather than through complex precision machining of multiple separate parts, reducing production costs while maintaining reliability.
Solution Approach 2:
The invention changes the approach from controlling absolute dimensional parameters of multiple components to controlling the relative spacing parameter between half-shell walls. This parameter change simplifies manufacturing while ensuring consistent flame transmission characteristics across different burners.
3Manufacturing precision
If strict dimensional tolerances are applied to multiple components, then correct flame transmission is guaranteed, but assembly complexity increases
Solution Approach 1:
The patent merges multiple precision components into two half-shells where the dimensional requirements are simplified. The assembly process becomes easier because the hollow space dimension is determined by the natural spacing between corresponding walls of the half-shells rather than requiring precise alignment of multiple separate elements with strict tolerances.
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 burner achieves reliable flame piloting with reduced production costs and improved reliability, maintaining consistent flame efficiency across different burners and varying temperatures.
Implementation Method 1
The auxiliary chamber forms a thin hollow space at the main flame holes for transmitting the flame
Implementation Method 2
the connecting portion defines a shaped hollow space forming a duct for piloting the flame between the first flaming front and the second flaming front
Data Source
AI summary
A burner for an oven or grill may include a flat and elongated body extending in a major longitudinal direction and confining an inner chamber configured to receive a comburent and combustible mixture. The body may include two half-shells mutually superposed and coupled in mirror-image relationship and including edge portions defining a coupling plane. A first series of flame holes may define a first flaming front and a second series of flame holes may define a second flaming front, at the coupling plane, on opposite sides of the inner chamber. The body may include a connecting portion between the first and second flaming fronts at an end of the inner chamber. The connecting portion may be defined by connecting walls of the half-shells extending parallel to the coupling plane in a sequence of depressions and elevations between the first and second flaming fronts and configured to transfer flame.