Burner

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Solution Overview

Problem

Existing burners face issues with flame spread due to clogging of the flame spread passage by food or slop, leading to incomplete combustion and unburned mixed gas leakage when one of the burner heads' flames is extinguished.

Innovation Solution

A burner design featuring a burner head with an outer and inner wall, a flame spread passage, and a staying guide that keeps mixed gas within the passage, ensuring smooth flame spread between the two walls and preventing unburned gas leakage, even when one flame is extinguished.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a slit is provided at the outer cap to spread the flame between the outer burner head and inner burner head, then the flame can be spread and reignition can occur when one flame is extinguished, but the slit may be clogged with food or slop during use, making it impossible to spread the flame

Engineering Contradiction:

Improveflame spread reliabilityVSAvoidclogging by food or slop

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The flame spread passage is divided into multiple segments: the first flame holes at the outer burner head, the flame spread passage itself, the second flame holes at the inner burner head, and the staying guide structure. This segmentation allows the flame to propagate through multiple paths rather than relying on a single slit, reducing the impact of clogging at any one location.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The staying guide acts as an intermediary structure within the flame spread passage that causes mixed gas to be stayed (accumulated) in the passage. This intermediary element ensures that sufficient mixed gas is available for flame propagation even when partial clogging occurs, maintaining reliable flame spread between the outer and inner burner heads.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the slit becomes clogged with food or slop, then flame spread is blocked, but providing alternative paths increases device complexity

Engineering Contradiction:

Improveflame spread continuityVSAvoidburner structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The flame spread passage serves multiple functions: it transports mixed gas from the outer burner head to the inner burner head, provides a path for flame propagation, and includes the staying guide that accumulates mixed gas to ensure continuous flame spread. This multi-functionality reduces the need for separate components, maintaining simplicity while ensuring reliability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The staying guide is nested within the flame spread passage, and the flame spread passage is nested between the outer and inner burner heads. This nested arrangement allows multiple functional elements to be integrated in a compact manner, providing robust flame spread capability without significantly increasing overall device complexity.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Reliability

If one of the burner heads' flames is extinguished, then incomplete combustion occurs and unburned mixed gas leaks, but ensuring continuous flame spread requires maintaining combustion under all conditions

Engineering Contradiction:

Improvecombustion continuityVSAvoidunburned mixed gas leakage

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The staying guide causes mixed gas to be stayed (accumulated) in the flame spread passage in advance, before flame propagation is needed. This preliminary accumulation ensures that when one burner head flame is extinguished, sufficient combustible mixed gas is already positioned in the passage to enable immediate reignition and continuous flame spread, preventing unburned gas leakage.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The flame spread passage with the staying guide ensures continuous flame propagation between the outer and inner burner heads. By maintaining a ready supply of mixed gas in the passage and ensuring uninterrupted flame travel, the system maintains continuous combustion action, preventing periods where unburned mixed gas would escape without being combusted.

Inventive Principle:

Principle #20Continuity of useful action

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 ensures continuous and efficient flame spread between the outer and inner burner heads, maintaining combustion and preventing unburned mixed gas discharge, regardless of the calorific value, and allows for smooth reignition of the flame when extinguished.

Implementation Method 1

a staying guide configured to cause the mixed gas supplied into the flame spread passage to be stayed in the flame spread passage

Methodology Applied

Scientific EffectGas accumulation/staying:

Implementation Method 2

an outer wall having first flame holes at which a flame is generated, an inner wall having second flame holes at which a flame is generated

Methodology Applied

Scientific EffectCombustion: Combustion

Data Source

PatentUS10451287B2Burner

Publication Date: 2019.10.22 LG ELECTRONICS INC

AI summary

A burner including a burner head configured to receive a mixed gas; and a burner cap configured to cover the burner head, wherein the burner head includes an outer wall having first flame holes at which a flame is generated, an inner wall having second flame holes at which a flame is generated, and a flame spread passage configured to spread a flame between the inner wall and the outer wall, and a staying guide configured to cause the mixed gas supplied into the flame spread passage to be stayed in the flame spread passage.