Cooking Device Wireless Door Control to Improve Noise Resistance

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Solution Overview

Problem

Conventional cooking devices with operation units on doors suffer from noise interference and reduced productivity due to long signal wiring distances, affecting user friendliness and manufacturing efficiency.

Innovation Solution

Implementing a wireless communication system between the door operation unit and the device body, eliminating the need for wired connections and enabling two-way radio wave communication for control signals, thus improving noise resistance and manufacturing productivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a grill pan is used to cook burgers, then the burgers can be cooked with grill marks, but fat accumulates in the grooves and requires tedious cleaning

Engineering Contradiction:
Improveease of cleaningVSAvoidfat accumulation
Core Design Contradiction:
Ease of operationVSLoss of substance

Solution Approach 1:

The patent extracts the problematic groove structure from the cooking surface and replaces it with raised cooking surfaces separated by ridges. This inversion allows fat to drain away from the cooking surface through the ridges into collection channels, eliminating fat accumulation in grooves and simplifying cleaning requirements.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces intermediary fat collection channels and drainage structures between the cooking surfaces and the pan body. These intermediaries capture and redirect fat away from the cooking surfaces, preventing accumulation and making the cooking surface easier to clean.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If traditional grill pans are used, then burgers can be cooked, but the pan becomes heavy and difficult to maneuver

Engineering Contradiction:
Improveease of maneuveringVSAvoidpan weight
Core Design Contradiction:
Ease of operationVSWeight of moving object

Solution Approach 1:

The patent incorporates a removable handle assembly that can be detached when not in use, reducing the overall weight of the pan during storage and cleaning. The handle may also incorporate ergonomic design elements to improve maneuverability during cooking operations.

Inventive Principle:
Principle #29Pneumatics and hydraulics

Solution Approach 2:

The patent divides the pan into separable components including a removable handle assembly and potentially detachable cooking surface elements. This segmentation allows users to remove unnecessary components to reduce weight and improve ease of maneuvering and cleaning.

Inventive Principle:
Principle #1Segmentation

3Reliability

If burgers are cooked on flat surfaces, then cooking is simple, but the burgers become soggy without proper drainage

Engineering Contradiction:
Improvecooking effectivenessVSAvoidburger texture
Core Design Contradiction:
ReliabilityVSShape

Solution Approach 1:

The patent segments the cooking surface into raised cooking areas separated by ridges and channels. This segmentation creates distinct zones for cooking and drainage, allowing burgers to maintain their shape and texture while excess fat and moisture drain away through the ridges into collection channels.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent transitions from a flat two-dimensional cooking surface to a three-dimensional surface with raised areas, ridges, and channels. This dimensional change creates depth for fat collection and improves drainage effectiveness while maintaining good contact between the burger and cooking surface.

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

4Shape

If grill pans with grooves are used, then grill marks are achieved, but the grooves trap fat and require soaking to clean

Engineering Contradiction:
Improvegrill mark formationVSAvoidcleaning time
Core Design Contradiction:
ShapeVSLoss of time

Solution Approach 1:

The patent inverts the traditional groove design by using raised ridges instead of grooves to create grill marks. The ridges contact the burger to create grill mark impressions, while the spaces between ridges serve as drainage channels. This inversion eliminates fat trapping in low areas and allows fat to drain away during cooking, significantly reducing cleaning time and effort.

Inventive Principle:
Principle #13The other way round (Inversion)

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 wireless communication system enhances noise resistance and manufacturing efficiency by eliminating signal interference and simplifying the manufacturing process, while maintaining user-friendly operation with improved heat resistance and reduced heat influence.

Implementation Method 1

The cooking surface is covered with a non-stick coating

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

the raised cooking surfaces and ridges facilitate drainage

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentEP2385309B1Cooking device
Publication Date: 2019.07.24 PANASONIC HOLDINGS CORP
  • EP2385309B1 patent drawingFigure 1
  • EP2385309B1 patent drawingFigure 2
  • EP2385309B1 patent drawingFigure 3

AI summary

Device body (2) with heating chamber (4), and door (3) that opens and closes opening (5) of heating chamber (4). A door wireless communication unit (17) transmits a control signal from an operation unit provided on door 3 in the form of a wireless signal to main wireless communication unit (19). This configuration eliminates the need of wiring between the operation unit and device body (2). No wiring improves noise resistance and productivity.