Cooking appliance

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Solution Overview

Problem

Conventional cooking appliances with bottom bake burners face difficulties in maintenance due to gaps between detachable plates, affecting aesthetics and cleanliness, and require cumbersome upside-down positioning for maintenance access.

Innovation Solution

The cooking appliance design features a side-mounted heat transfer path and slidable lower heating unit, allowing easy access and maintenance without separating the cooking chamber's bottom surface or overturning the appliance, using flow path connection members to direct heat from the bottom bake burner to the cooking chamber.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of repair

If the bottom surface of the cooking chamber is configured with a detachable plate to allow access to the bottom bake burner, then maintenance access is improved, but gaps are formed between the plate and main body affecting aesthetics and cleanliness

Engineering Contradiction:

Improvemaintenance access to bottom bake burnerVSAvoidsmoothness of cooking chamber bottom surface

Core Design Contradiction:

Ease of repairVSShape

Solution Approach 1:

The bottom bake burner and its installation space are extracted from the main body structure, allowing the bottom surface of the cooking chamber to remain smooth and integral. The burner is positioned in a separate lower space portion that is accessible through a side opening, eliminating the need for detachable plates in the cooking chamber bottom.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of providing maintenance access through the bottom surface of the cooking chamber (vertical dimension), the design provides access through a side opening (lateral dimension). This allows the bottom surface to remain smooth and integral while still enabling maintenance access to the bottom bake burner through a different spatial path.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of repair

If the lower portion of the bottom bake burner installation space is opened to provide maintenance access, then ease of maintenance is improved, but the main body structure becomes complex and may require overturning the appliance

Engineering Contradiction:

Improvemaintenance access to bottom bake burnerVSAvoidstructure of main body

Core Design Contradiction:

Ease of repairVSDevice complexity

Solution Approach 1:

The design changes the access direction from vertical (bottom of appliance) to lateral (side of appliance). A side opening is provided in the lower space portion, allowing the bottom bake burner to be accessed and removed through the side without requiring the main body to be overturned or complex disassembly procedures.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Ease of repair

If a detachable plate is used to form the bottom surface of the cooking chamber, then maintenance access is improved, but foreign substances may collect in the gap affecting cleanliness

Engineering Contradiction:

Improvemaintenance access to bottom bake burnerVSAvoidaccumulation of foreign substances

Core Design Contradiction:

Ease of repairVSObject-affected harmful factors

Solution Approach 1:

The bottom bake burner is extracted from the cooking chamber space and positioned in a separate lower space portion. This eliminates the need for detachable plates in the cooking chamber bottom, maintaining a smooth, gapless surface that prevents foreign substances from collecting while still allowing maintenance access through the side opening.

Inventive Principle:

Principle #2Taking out (Extraction)

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 maintenance convenience, maintains a smooth and clean cooking chamber surface, and reduces the risk of accidents and appliance damage during maintenance.

Implementation Method 1

The bottom bake burner may be installed below the cooking chamber and in a separate installation space separately provided below the cooking chamber

Methodology Applied

Scientific EffectCombustion: Combustion

Implementation Method 2

heat generated in the bottom bake burner to be transferred to a lower portion of the food in the cooking chamber

Methodology Applied

Scientific EffectHeat transfer: Conduction (thermal)

Implementation Method 3

The convection device may circulate air inside the cooking chamber so that heat is uniformly distributed throughout the cooking chamber

Methodology Applied

Scientific EffectConvection: Convection

Implementation Method 4

flow path connection members that form a path allowing heat generated inside the bottom bake burner to be transferred into the cooking chamber

Methodology Applied

Scientific EffectHeat flow: Conduction (thermal)

Data Source

PatentEP3940296B1Cooking appliance

Publication Date: 2023.08.02 LG ELECTRONICS INC

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AI summary

A cooking appliance is provided that may include a main body having a cooking chamber formed therein; a lower space formed inside the main body and separated from the cooking chamber between a bottom of the main body and the cooking chamber; and first and second heating assemblies, the second heating assembly being installed inside the lower space. An opening configured to open the lower space portion to an outside of the main body may be formed in the lower space between the bottom of the main body and the cooking chamber, and the second heating assembly may be inserted into or withdrawn from the lower space through the opening.