Rotatable Cooking Tray Layout for Stirring and Steam Cooking

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Solution Overview

Problem

Existing food cooking appliances with stirring paddles are limited to a single type of cooking method, restricting the variety of recipes that can be prepared.

Innovation Solution

A cooking appliance with a housing, cooking tank, tray, heating means, and a rotating stirring blade that allows for multiple cooking modes, including steam cooking, heating by radiation, conduction, or air flow, and optional stirring, enabling four distinct cooking methods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a stirring blade is added to a cooking appliance, then the functionality for stirring food is improved, but the device becomes dedicated to a single type of cooking, limiting versatility

Engineering Contradiction:
Improvestirring functionVSAvoidcooking method variety
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The plate is made rotatable relative to the fixed bearing, allowing the stirring blade to be positioned in different orientations. This dynamic adjustment enables the same stirring mechanism to work effectively for different cooking methods (steam cooking, radiation heating, conduction heating, air flow heating) without dedicating the device to a single cooking type.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The cooking appliance is designed with a universal stirring mechanism that can function across multiple cooking modes. The rotatable plate with locking means allows the stirring blade to adapt to various cooking configurations, making the device versatile enough to perform steam cooking, radiation heating, conduction heating, and air flow heating, all with the same stirring capability.

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

2Ease of operation

If the plate is fixed in position, then the stirring blade can effectively stir food, but no free space is available under the tray for water storage needed for steam cooking

Engineering Contradiction:
Improvestirring effectivenessVSAvoidwater storage space
Core Design Contradiction:
Ease of operationVSVolume of stationary object

Solution Approach 1:

The plate is designed to be rotatable on the fixed bearing rather than completely fixed. This dynamic positioning allows the plate to be rotated to a horizontal position during steam cooking to create space for water storage underneath, while still maintaining the ability to be positioned vertically for effective stirring when needed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The solution moves the plate from a purely vertical fixed position to a rotatable configuration that utilizes the horizontal dimension. By rotating the plate around the fixed bearing, space is created underneath the tray for water storage without compromising the stirring functionality, effectively using spatial reconfiguration to resolve the volume conflict.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Adaptability or versatility

If the plate is made rotatable to enable steam cooking, then versatility is improved, but additional locking mechanisms are required, increasing device complexity

Engineering Contradiction:
Improvecooking mode optionsVSAvoidlocking mechanism structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The plate is designed with rotatable capability supported by a fixed bearing, allowing it to rotate between vertical (stirring) and horizontal (steam cooking) positions. This dynamic design provides versatility for multiple cooking modes while using a relatively simple fixed bearing mechanism rather than complex multi-position adjustment systems.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The locking mechanism is designed to be simple and self-contained, with locking means that can be easily engaged and disengaged by the user. The fixed bearing with integrated locking features allows the plate to be locked in position during operation without requiring complex external locking systems, reducing overall device complexity while maintaining versatility.

Inventive Principle:
Principle #25Self-service

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

Enables versatile food preparation by allowing users to choose between steam cooking, stirring, and different heating methods, expanding the range of recipes that can be prepared with the same device.

Implementation Method 1

the heating means are arranged to heat the food directly (by radiation for example)

Methodology Applied
Scientific EffectRadiation: Thermal Radiation

Implementation Method 2

or indirectly (by conduction through the cooking tank, or via a vector such as air or steam of water)

Methodology Applied
Scientific EffectConduction: Conduction (thermal)

Implementation Method 3

a fixed bearing arranged on the cooking tank to support and guide the stirring blade in rotation

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3912530B1Food cooking appliance
Publication Date: 2023.06.07 SEB SA
  • EP3912530B1 patent drawingFigure 1
  • EP3912530B1 patent drawingFigure 2~3
  • EP3912530B1 patent drawingFigure 4

AI summary

Food cooking apparatus comprising: - a housing (10), - a cooking tank (20), - a tray (30), - heating means (71, 72), - a stirring paddle (40), - a fixed bearing (50) arranged to support and guide the stirring paddle (40) in rotation, - drive means (60), the cooking tank (20) comprising a tank orifice, characterized: in that the stirring paddle (40) is arranged to stir food placed on the tray (30), in that the tray (30) comprises a tray orifice (31) for the passage of the drive means (60) and/or the stirring paddle (40), and in that the cooking apparatus comprises means for blocking the rotation of the tray (30) around the fixed bearing (50).