Multi-Chamber Oven Auto-Sequencing for Simultaneous Cooking Completion

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Solution Overview

Problem

Conventional oven appliances with multiple cavities lack coordinated control of their cooking functions, leading to issues such as undercooking or overcooking due to inadequate compensation for preheat conditions and thermal communication between chambers.

Innovation Solution

A controller is used to determine preheat statuses and adjust cooking times for each chamber, ensuring that the heating assemblies operate simultaneously to achieve precise cooking results across multiple cavities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If multiple cooking chambers are operated independently with manual timing, then each chamber can be controlled separately, but the user must manually coordinate cooking times and compensation for preheat conditions is not automatically performed, leading to undercooking or overcooking

Engineering Contradiction:
ImproveManual control of each chamberVSAvoidCooking accuracy
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The controller automatically performs preheat compensation and coordinates cooking times between chambers without user intervention. The system self-adjusts by determining preheat status of each chamber and calculating adjusted cooking times to ensure all chambers finish cooking simultaneously, eliminating the need for manual coordination while maintaining cooking accuracy.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The controller determines preheat status of each chamber and uses this feedback information to calculate appropriate cooking time adjustments. By continuously monitoring chamber conditions and adjusting timing accordingly, the system ensures accurate cooking results across multiple chambers operating simultaneously.

Inventive Principle:
Principle #23Feedback

2Manufacturing precision

If cooking times are adjusted to compensate for preheat conditions, then cooking accuracy is improved, but the system must determine preheat status and calculate adjusted times, increasing control complexity

Engineering Contradiction:
ImproveCooking accuracyVSAvoidControl algorithm complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The controller determines preheat status of each chamber before initiating the cooking cycle and pre-calculates the necessary cooking time adjustments. By performing this compensation calculation in advance based on initial chamber conditions, the system simplifies the control logic while ensuring accurate cooking timing from the start.

Inventive Principle:
Principle #10Preliminary action

3Productivity

If all chambers are heated simultaneously to their respective temperatures, then cooking can begin without delay, but thermal communication between chambers may cause unexpected temperature changes and affect cooking results

Engineering Contradiction:
ImproveCooking efficiencyVSAvoidTemperature control stability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The controller monitors chamber conditions and uses feedback to coordinate cooking operations. By determining preheat status and calculating adjusted cooking times, the system accounts for thermal communication effects and ensures that all chambers complete cooking simultaneously despite heat transfer between adjacent chambers.

Inventive Principle:
Principle #23Feedback

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 solution ensures that food items in different chambers are cooked according to their specific recipes while compensating for preheat conditions, resulting in consistent and accurate cooking outcomes.

Implementation Method 1

Multiple gas or electric heating elements are positioned within the cabinet for heating the cooking chamber to cook food items located therein

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 2

even though the oven cavities are physically separated, there is commonly some thermal communication among cavities

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS12064053B2Auto sequencing cooking events in an oven appliance including multiple cooking chambers
Publication Date: 2024.08.20 HAIER US APPLIANCE SOLUTIONS INC
  • US12064053B2 patent drawing
  • US12064053B2 patent drawing
  • US12064053B2 patent drawing

AI summary

An oven appliance includes a two or more cooking chambers positioned within a cabinet and a heating assembly for independently and selectively heating those chambers. A controller is configured to obtain a cooking time for each cooking chamber, determine preheat statuses for each chamber, and generate adjusted cooking times for each chamber based at least in part on their respective preheat statuses. The heating assembly then heats each cooking chamber for its adjusted cooking time such that the heating processes in all cooking chambers end simultaneously.