Dual Ring Gas Burner With Segmented Inlets For Flame Stability

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Solution Overview

Problem

Dual gas burners with inner and outer burners face performance limitations due to gas flow interference between the outer ring and the inner ring, affecting heating distribution and flame stability.

Innovation Solution

A gas burner assembly with two flame rings, where the outer ring uses multipoint injection as a bottom breather and the inner ring as a top breather, featuring separate gas inlets and combustion air sources to improve heating distribution and flame direction, with flame ports on the caps for enhanced performance and easy cleaning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the outer ring and inner ring share a common gas supply system, then the device complexity is reduced, but gas flow interference occurs between the rings affecting flame stability

Engineering Contradiction:
Improvegas supply system complexityVSAvoidflame stability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The gas supply system is segmented into separate independent pathways: the outer ring has its own gas inlet and distribution system, while the inner ring has a separate gas inlet and distribution system. This segmentation eliminates gas flow interference between the rings, ensuring stable flame operation for each burner zone independently.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If the burner design includes complex internal gas distribution channels, then gas flow control is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvegas flow controlVSAvoidburner manufacturing
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The burner is divided into modular segments: outer ring, inner ring, crown, and cap components. Each segment has simplified gas distribution channels that are easier to manufacture individually, while the modular assembly provides the complex overall gas flow control functionality needed for independent ring operation.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If flame ports are located on the crown surface, then gas distribution is improved, but cleaning difficulty increases due to recessed ports

Engineering Contradiction:
Improvegas distributionVSAvoidcleaning accessibility
Core Design Contradiction:
Ease of operationVSEase of repair

Solution Approach 1:

Instead of locating flame ports on the crown surface (traditional design), the flame ports are inverted and located on the cap surface. This inversion allows the ports to be accessible from above for easy cleaning, while the internal gas distribution channels in the crown remain optimized for gas flow control. The cap acts as a removable cover that provides access to the flame ports.

Inventive Principle:
Principle #13The other way round (Inversion)

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

This design enhances cooking performance by allowing high heating rates and simmer capabilities, while maintaining a smooth burner design with improved flame stability and easy cleaning functionality.

Implementation Method 1

The outer burner (10) includes a first Venturi element (13) for supplying an air-gas mixture and the inner burner (20) includes a second Venturi element (23) for supplying an air-gas mixture.

Methodology Applied
Scientific EffectVenturi effect: Venturi Effect

Data Source

PatentUS11940148B2Multi injection dual ring gas burner for domestic gas cooking units
Publication Date: 2024.03.26 ELECTROLUX APPLIANCES
  • US11940148B2 patent drawing
  • US11940148B2 patent drawing
  • US11940148B2 patent drawing

AI summary

The present disclosure is related to a dual ring gas burner wherein the outer ring includes multipoint injection with bottom breathing and the inner ring works with top breathing. Two flame rings are included along with burner ports on the caps. As a result, better heating distribution is achieved along with greater ease in cleaning and combined simmer functions with high ratings by having the outer ring gas flow not interfering with the inner ring.