Compact Cooking Apparatus with Removable Compartment for Easy Cleaning

Solution Overview

Problem

Current convection and steam cooking ovens are large, expensive, and difficult to clean, lacking compactness and ease of maintenance.

Innovation Solution

A cooking apparatus with a housing, removable cooking compartment, air circulation system, and steam generation capabilities, featuring a heating unit, fan, and user interface for efficient convection and steam cooking with easy cleaning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional steam oven or convection oven is used, then steam cooking or convection heating functionality is achieved, but the apparatus becomes large and expensive

Engineering Contradiction:
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The patent combines steam generation and convection heating functions into a single integrated cooking apparatus. The heating unit serves dual purposes: generating steam when water is present and providing convection heating when air circulates. This merging of functions eliminates the need for separate steam ovens and convection ovens, reducing overall apparatus size and cost while maintaining both cooking capabilities.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The cooking apparatus is designed with multi-functionality, where the same heating unit and air circulation system can operate in different modes (steam cooking, convection heating, or combination mode). The control system enables the apparatus to switch between functions based on user input, making a single device replace multiple specialized appliances.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If a conventional steam oven configuration is used, then steam cooking capability is provided, but the apparatus becomes difficult to clean

Engineering Contradiction:
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The cooking apparatus is divided into separable components, including a removable cooking compartment, detachable heating unit, and separable water reservoir. This segmentation allows each component to be easily removed and cleaned independently, addressing the cleanability issue while maintaining steam cooking functionality. The modular design enables thorough cleaning without disassembling the entire apparatus.

Inventive Principle:
Principle #1Segmentation

3Volume of moving object

If a compact cooking apparatus is designed, then size and cost are reduced, but cleaning accessibility may be compromised

Engineering Contradiction:
Core Design Contradiction:
Volume of moving objectVSEase of operation

Solution Approach 1:

The apparatus incorporates dynamic, movable components such as the removable cooking compartment and detachable heating unit. These movable parts allow users to access and clean internal surfaces that would otherwise be difficult to reach in a compact fixed design. The ability to disassemble and reassemble components maintains compactness when assembled while providing full cleaning accessibility when disassembled.

Inventive Principle:
Principle #15Dynamics

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 apparatus is compact, cost-effective, and easy to clean, providing efficient convection and steam cooking with improved food retention and nutrient preservation.

Implementation Method 1

air heated by the heating unit can circulate between the second enclosed space and the cooking compartment

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 2

air heated by the heating unit can circulate

Methodology Applied
Scientific EffectThermal expansion: Thermal Expansion

Implementation Method 3

a fan configured to generate an air flow at the second enclosed space so as to facilitate the air flow circulation

Methodology Applied
Scientific EffectForced convection: Forced Convection

Implementation Method 4

water can be delivered from the water reservoir to the heating unit for steam generation

Methodology Applied
Scientific EffectEvaporation: Evaporation

Implementation Method 5

water can be delivered from the water reservoir to the heating unit for steam generation

Methodology Applied
Scientific EffectPhase change: Phase Change

Data Source

PatentEP3911205B1A cooking apparatus
Publication Date: 2025.07.02
  • EP3911205B1 patent drawingFigure 1
  • EP3911205B1 patent drawingFigure 2A
  • EP3911205B1 patent drawingFigure 2B

AI summary

A cooking apparatus (100) comprising: a housing (110); a cooking compartment (120) arranged at the housing, the cooking compartment being configured to form a first enclosed space in which food item can be received; a heating unit (130) arranged inside a second enclosed space in the housing, wherein the cooking compartment comprises an air inlet through which air can enter from a side of the cooking compartment, and an air outlet through which air can exit from an opposite side of the cooking compartment, and wherein the air inlet and the air outlet are connected to the second enclosed space such that air heated by the heating unit can circulate between the second enclosed space and the cooking compartment.