Sequential Broiling With Zoned Infrared Heating Under Power Limits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cooking instruments struggle to consistently and automatically produce complex meals with precision and speed due to their inability to systematically control heating patterns, leading to inefficient power usage and human intervention.
Innovation Solution
A cooking instrument with an infrared-based heating system and a control system that dynamically adjusts power distribution to specific subsets of heating elements, using a feedback loop to ensure even heating and prevent excessive power draw, allowing for sequential focusing of power on food surfaces to achieve precise cooking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional cooking instruments use omnidirectional heating to cook food evenly, then cooking uniformity is improved, but power consumption increases and cooking speed decreases
Solution Approach 1:
The heating system is divided into multiple independently controllable heating zones (first heating element, second heating element, third heating element) positioned at different locations within the cooking chamber. Each zone can be activated sequentially or independently to provide directional heating to specific areas of the food, replacing the traditional omnidirectional heating approach with segmented, zone-controlled heating elements.
Solution Approach 2:
The control system implements periodic switching between different heating zones, activating each heating element for specific time intervals in a cyclic manner. This periodic activation pattern allows the system to concentrate power in specific zones at different times, achieving even cooking distribution while managing peak power consumption through time-based load distribution.
2Productivity
If conventional cooking instruments use high power to cook food quickly, then cooking speed is improved, but power consumption increases and circuit breaker may trip
Solution Approach 1:
The total heating power is segmented across multiple heating elements rather than using a single high-power element. This allows the system to distribute the power load across multiple zones, enabling high cooking speeds through concentrated heating when needed while avoiding excessive peak power draw that would trip circuit breakers.
Solution Approach 2:
The control system uses periodic switching and pulse-width modulation to deliver high power in controlled bursts to specific heating zones, then switches to lower power or different zones. This periodic high-power delivery achieves fast cooking speeds while the average power consumption remains within circuit breaker limits through time-based power management.
3Adaptability or versatility
If conventional cooking instruments require human observation and dynamic decisions, then cooking flexibility is improved, but automation level decreases and human intervention increases
Solution Approach 1:
Optical sensors (cameras) continuously monitor the cooking process, capturing images of the food's surface color, texture, and browning progression. The control system processes these images in real-time, comparing them against target cooking states, and automatically adjusts heating element activation and power levels to achieve the desired cooking outcome, eliminating the need for human observation and decision-making.
Solution Approach 2:
The cooking system performs self-monitoring and self-adjustment through integrated sensors and control algorithms. The system automatically detects cooking progress, determines when specific cooking stages are complete, and adjusts heating parameters without human intervention, enabling fully automated cooking operations that maintain flexibility through adaptive control.
4Area of stationary object
If conventional cooking instruments use multiple heating elements simultaneously, then heating coverage is improved, but power consumption increases
Solution Approach 1:
The cooking chamber is divided into multiple heating zones with individual heating elements positioned to cover different areas. The control system activates only the heating elements needed for the current cooking stage or food region, providing adequate heating coverage while consuming power only where and when necessary, rather than activating all heating elements simultaneously.
Solution Approach 2:
Different heating zones are activated based on the specific cooking requirements of different food regions or cooking stages. The system applies heating locally to where it is needed most, adjusting the spatial distribution of heating power dynamically to match the cooking demands, thereby achieving comprehensive heating coverage without the waste of simultaneous full-power activation across all zones.
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 enables efficient and precise cooking of complex meals by optimizing power usage and reducing human intervention, allowing for consistent and automatic production of award-worthy dishes.
Implementation Method 1
A cooking instrument with an infrared-based heating system and a control system that dynamically adjusts power distribution to specific subsets of heating elements
Implementation Method 2
A cooking instrument with an infrared-based heating system and a control system that dynamically adjusts power distribution to specific subsets of heating elements
Data Source
AI summary
Several embodiments include a cooking appliance/instrument (e.g., oven). The cooking instrument can draw an alternating current (AC) power and generate a maximum available power for a heating system of the cooking instrument via a power component that converts the drawn AC power. The cooking instrument can then directionally heat each of different zones in a cooking chamber of the cooking instrument in sequence using one or more heating elements of the heating system on at least one side of the cooking chamber such that each step in the sequence utilizes the maximum available power for the heating system.