Partitioned Cooking Chamber Layout for Uniform Heating

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Solution Overview

Problem

Conventional cooking appliances face challenges in achieving uniform heating and efficient air circulation, leading to hotspots and difficulties in cleaning, as well as potential food contamination and leakage of food leftovers due to the placement of burners at the bottom of the cooking chamber.

Innovation Solution

A cooking appliance design featuring a partition plate that separates the cooking chamber into two compartments, with a burner assembly located at the rear wall, allowing for improved air circulation and heated air distribution, and a fan system that ensures even heating and prevents food contamination by keeping the burner area isolated from food residue.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the burner is placed at the bottom of the cooking chamber, then the structure is simplified, but food contamination and leakage of food leftovers occur

Engineering Contradiction:
ImprovestructureVSAvoidfood contamination
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The cooking chamber is divided into two separate chambers by a partition plate. The first chamber accommodates food and the second chamber houses the burner and fan. This segmentation prevents food contamination while maintaining structural simplicity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The partition plate acts as an intermediary barrier between the food chamber and the burner chamber. It prevents direct contact between food and potential contaminants from the burner area, while still allowing the system to function as an integrated cooking appliance.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of manufacture

If the burner is placed at the bottom of the cooking chamber, then installation is easier, but cleaning becomes difficult due to coupling holes

Engineering Contradiction:
ImproveinstallationVSAvoidcleaning
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

By segmenting the cooking chamber into two separate chambers with the partition plate, the design eliminates the need for coupling holes at the bottom. The partition plate provides a clean separation that simplifies both installation and cleaning operations.

Inventive Principle:
Principle #1Segmentation

3Device complexity

If conventional air circulation is used, then the system is simple, but heating uniformity is poor with hotspots forming

Engineering Contradiction:
Improveair circulation systemVSAvoidheating uniformity
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The fan in the second chamber pre-heats air before it enters the food chamber through the partition plate. This preliminary heating action ensures uniform heat distribution throughout the cooking chamber, eliminating hotspots while maintaining system simplicity.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The partition plate with its openings acts as an intermediary that controls air flow between chambers. It allows pre-heated air to pass from the second chamber to the first chamber, ensuring uniform heating while maintaining the simplicity of the air circulation system.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 heating uniformity, reduces the risk of food contamination, and simplifies cleaning by eliminating the need for coupling holes at the bottom, ensuring that food leftovers do not seep onto the floor, while maintaining efficient air circulation for effective cooking.

Implementation Method 1

a burner provided in the second chamber to burn a gas, thereby generating flame

Methodology Applied
Scientific EffectCombustion: Combustion

Implementation Method 2

a fan provided in the second chamber to allow heated air to flow

Methodology Applied
Scientific EffectForced Convection: Forced Convection

Data Source

PatentEP3483506B1Cooking appliance
Publication Date: 2021.07.14 LG ELECTRONICS INC
  • EP3483506B1 patent drawingFigure 1
  • EP3483506B1 patent drawingFigure 2
  • EP3483506B1 patent drawingFigure 3

AI summary

A cooking appliance includes a cavity to define a cooking chamber, a door to open and close the cooking chamber, a partition plate to partition the cavity into a first chamber and a second chamber, the partition plate facing the door in the closed state, wherein the door closes the first chamber, a burner provided in the second chamber to burn gas, thereby generating flame, and a fan provided in the second chamber to allow heated air to flow.