Concentric Gas Burner Venturi Layout for Compact Height and High Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gas burners for cooking appliances fail to simultaneously meet requirements of small vertical height, insensitivity to pressure streaming, high power development, easy part replacement, dual and three-ring operation, low cost assembly, and easy cleaning, often compromising on one or more of these aspects.
Innovation Solution
A gas burner design featuring a cup-shaped support with dual gas inlets, horizontal and vertical nozzles, and venturi conduits that allow for adjustable primary and secondary air intake from above and below the hob, enabling efficient flame generation and operation as both dual and three-ring burner with improved power and resistance to streaming effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the burner is designed with small vertical height to fit on cookers or built-in hobs, then the venturi conduits are too short to develop sufficient power, but high power development is required
Solution Approach 1:
The venturi conduits are oriented horizontally rather than vertically, changing the dimension in which the venturi effect develops. This allows sufficient venturi length for power development while maintaining a compact vertical height of the burner assembly, resolving the contradiction between compact size and power output.
2Device complexity
If the burner withdraws primary air from below the hob, then the design is simpler, but the burner becomes sensitive to the streaming effect when cabinet doors are opened
Solution Approach 1:
The primary air intake is extracted from the location below the hob and repositioned to draw air from the surrounding environment. This removes the burner's dependence on the space below the hob, eliminating sensitivity to cabinet door operations while maintaining design simplicity.
3Power
If the venturi conduits are made longer to develop sufficient power, then the burner vertical height increases, but compactness is required for built-in installation
Solution Approach 1:
The venturi conduits are configured in a horizontal orientation rather than vertical, allowing the venturi effect to develop over a sufficient length without increasing the burner's vertical height. This enables high power development while maintaining the compact dimensions required for built-in hob installation.
4Length of stationary object
If the burner uses radial venturis extending towards the burner interior, then the vertical height is reduced, but the outer burner portion loses annular shape and secondary air supply to the central part
Solution Approach 1:
The venturi conduits are arranged horizontally with their outlets positioned on the outer periphery of the burner, maintaining the annular shape of the outer burner portion. This configuration preserves the proper geometry for secondary air supply to the central part while keeping the vertical height compact.
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 effectively satisfies all listed requirements by providing robust flame coverage, high power, and ease of maintenance while maintaining operation under varying pressure conditions, ensuring both inner and outer flames are substantial and the burner remains functional as a dual or single-command unit.
Implementation Method 1
two venturi conduits of horizontal axis (24) which draw in a flow of primary air originating from above the hob (6)
Implementation Method 2
Gas leaving through the vertical nozzle (16) and through the two spaced-apart horizontal nozzles (14)
Data Source
AI summary
An improved gas burner for cooking appliances, with an inner central portion (40) defining an inner chamber (52) provided with a central flame ring (72) and with an outer portion (42) concentric with said central portion (40) defining an outer chamber (47) provided with at least one outer flame ring (78), characterised by comprising a pair of first injectors (14) of substantially horizontal axis, symmetrically disposed about a diametrical vertical plane of said burner, said first injectors (14) being associated with respective adjacent venturi conduits (24) with substantially horizontal parallel axes, feeding said outer portion (42) with a gas/primary air mixture to generate said outer flame ring (78), said adjacent conduits (24) being spaced apart to define a space within which a second injector (16) of vertical axis is disposed facing a venturi conduit (50) of vertical axis feeding said inner central portion (40) with a gas/primary air mixture to generate said central flame ring (72).