Flat Oven Burner Assembly for Even Flame and Simpler Fastening
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Solution Overview
Problem
Existing flat oven or grill burners face challenges in manufacturing efficiency, assembly complexity, and uneven flame distribution due to large size and material waste, with issues related to fastening members, thermocouple, and igniter positioning, as well as sealing problems between half shells.
Innovation Solution
A flat burner design featuring a fastening tab made of one piece with the burner body, integrated venturi tube for gas and air mixture inlet, and a reflecting shield for improved flame distribution, along with one-piece mountings for the igniter and thermocouple to simplify assembly and reduce size while using thinner metal sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional separate fastening members are used, then assembly operations are complex and time-consuming, but manufacturing efficiency is reduced
Solution Approach 1:
The fastening member is merged with the burner body by forming it as an integral part through bending and shaping operations on the metal sheet. This eliminates separate fastening components and reduces assembly steps while maintaining manufacturing efficiency through continuous forming processes.
Solution Approach 2:
The fastening member is segmented into distinct functional zones: a bending portion for attachment, a fastening portion for securing, and positioning features. This segmentation allows each zone to perform its specific function optimally while being manufactured as one piece with the burner body.
2Loss of substance
If burner size is reduced, then material waste is limited and thinner sheets can be used, but positioning precision of components becomes difficult
Solution Approach 1:
Positioning features such as recesses, protrusions, and alignment marks are pre-formed during the burner body shaping process. This preliminary action ensures accurate positioning of the fastening member and other components without requiring additional positioning steps or increasing overall burner size.
Solution Approach 2:
The burner body is designed with locally optimized features: thicker sections where structural strength is needed, thinner sections where material reduction is beneficial, and specific localized positioning features that ensure precision without increasing overall dimensions. This allows using thinner metal sheets while maintaining positioning precision through strategic local reinforcements.
3Ease of manufacture
If fastening member extends beyond burner wall, then fastening is simplified, but burner profile is compromised
Solution Approach 1:
The fastening member incorporates a bending portion that allows dynamic adjustment during assembly. The member can be bent to the required angle and positioned as needed, then secured in its final position. This dynamic capability simplifies fastening operations while the final bent configuration maintains a clean burner profile by conforming to the burner surface rather than extending rigidly beyond it.
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 solution enhances manufacturing efficiency, simplifies assembly, achieves even flame distribution, reduces material waste, and allows for thinner metal usage without compromising strength, while ensuring proper positioning of thermocouple and igniter for improved burner performance.
Implementation Method 1
Said fastening tab has an inclined portion spacing an ending fastening portion from a burner wall, which inclined portion is substantially parallel to said burner wall and/or to the median plane of the burner
Implementation Method 2
the burner has a fuel and comburent mixture inlet end, which end is made like a venturi tube and it is integrated as one piece in the burner body
Implementation Method 3
the two half shells being tightly secured one with the other by mechanically bending and pressing perimetral continuous flanges along outer perimetral edges of the two half shells
Data Source
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AI summary
The invention relates to an oven or grill burner composed of a flat body delimiting an inner chamber and having fastening protrusions, characterized in that fastening members are composed of at least a tab made of one piece with flat body wall or walls . In addition to have the fastening tab as one piece, the burner has mountings fastening the thermocouple and/or igniter and/or the venturi tube supplying air and gas mixture also of one piece therewith. The burner is shaped such to increase the even distribution to outlet holes of gas and it has such constructive characteristics allowing to reduce the thickness of the metal sheet for making it without compromising the burner strength.