Concentric Gas Burner Layout for Low-Profile Venturi Airflow
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Solution Overview
Problem
Existing gas burners face issues with vertical Venturi pipes obstructing height reduction, over-heating of primary air, reduced combustion quality due to air flow turbulence, and safety concerns from horizontal injectors, limiting their use in appliances with reduced height requirements.
Innovation Solution
A gas burner design with horizontally oriented central and peripheral Venturi pipes, separate injectors, and angled Venturi pipes with curved chambers to minimize turbulence and optimize air flow, allowing for a lower profile and improved combustion efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If vertical Venturi pipes are used to supply gas to the central burner, then the gas flow is effective, but the height of the cooking plate increases
Solution Approach 1:
The patent transitions from vertical Venturi pipe arrangement to horizontal orientation, changing the spatial dimension of gas flow. This allows the Venturi pipes to be arranged in the horizontal plane rather than extending vertically, thereby reducing the cooking plate height while maintaining effective gas supply to the central burner
2Ease of manufacture
If primary air is sucked from the peripheral zone around the outer flame crown, then air intake is simplified, but the air becomes over-heated reducing combustion quality
Solution Approach 1:
The patent introduces localized cooling channels that provide cool air specifically to the peripheral zone where primary air is sucked. This creates a local quality improvement by introducing cooler air at the critical location, preventing overheating and maintaining combustion quality without complicating the overall air intake structure
3Area of stationary object
If the angle between two angled Venturi pipes is small, then space is saved, but turbulence occurs in the diffusion chambers
Solution Approach 1:
The patent employs curved transition sections and rounded diffusion chamber geometries to guide the gas flow from the angled Venturi pipes. The curved surfaces smoothly redirect the flow, preventing sharp impingement against orthogonal walls and reducing turbulence generation while maintaining efficient use of the burner cross section
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 design achieves a lower cooking plate height, reduces turbulence, enhances combustion quality, and improves safety by allowing flexible air flow intake from multiple directions, addressing the limitations of prior burners.
Implementation Method 1
a first central and circular burner (6), able of feeding a peripheral flame crown (7), and a second annular peripheral burner (8) which surrounds said first central burner (6)
Implementation Method 2
said first central and circular burner (6), able of feeding a peripheral flame crown (7)
Data Source
Figure 1
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AI summary
Gas burner provided with a plurality of concentric circular flame crowns, with a burner body apt to be mounted on the surface of a cooking plate, a burner body apt to be mounted on the surface of a cooking plate and provided with a first chamber for the diffusion of the air/gas mixture, and whose top is closed by a first cover, a second outer annular burner surrounding said central burner, a first gas inlet in communication with said body, a first gas injector able of injecting a gas flow into a respective Venturi pipe to said first central burner, a second gas inlet in communication with said body, wherein said second annular burner is provided with two separate diffusion chambers, and whose top is closed by a second cover, wherein said second gas inlet is in communication with said two separate chambers which are not in communication to each other, two distinct injectors connected with said second gas inlet and placed on the same end position of said second gas inlet, two respective horizontally oriented Venturi pipes, each of which being able of supplying with an air/gas mixture a respective of said two diffusion chambers; said first gas injector and the respective Venturi pipe for the central burner are horizontally oriented, and preferably they are positioned between the two Venturi pipes dedicated to said two diffusion chambers. Said two horizontally oriented Venturi pipes for the outer annular burner and the relevant gas injectors are angled to each other, and this angle is over 70°. Preferably the Venturi pipes for the annular burner admit into respective curved chambers provided with respective vertical gas passages, extended for the whole length of said curved chamber, connecting them to respective diffusion chambers.