High power density toaster
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Solution Overview
Problem
Conventional toasters fail to efficiently toast bread of varying types and shapes, leading to over-drying due to prolonged toasting times and increased risk of overcooking, as they do not effectively manage the heating duration and distribution based on the bread's characteristics.
Innovation Solution
A toaster with a heating element that emits electromagnetic energy with a power density suitable for quick toasting, combined with a movement mechanism to ensure even heating and a control system that adjusts the spectral power distribution and intensity based on the bread's characteristics, using light sensors to monitor and adjust the toasting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional toasters use preset duration heating, then consistent toasting results are achieved for standard bread, but toasting time is prolonged and moisture evaporation occurs
Solution Approach 1:
The heating element operates in periodic cycles with varying power levels rather than continuous preset duration heating. The controller alternates between high-power and low-power heating phases, adjusting the cycle duration based on real-time feedback from light sensors to achieve consistent toasting results while reducing total toasting time and preventing moisture evaporation.
Solution Approach 2:
Light sensors continuously monitor the toasting process and provide feedback to the controller. The controller adjusts the heating element's power output based on this feedback, dynamically optimizing the toasting duration and intensity to maintain consistency across different bread types while minimizing toasting time and preventing over-drying.
2Adaptability or versatility
If conventional toasters use fixed heating elements, then simple device structure is maintained, but adaptability to different bread types and shapes is poor
Solution Approach 1:
The heating element's power output is dynamically adjusted based on real-time feedback from light sensors rather than operating at a fixed level. The controller modifies heating intensity and duration according to the specific bread characteristics detected during toasting, enabling adaptability to different bread types, shapes, and thicknesses while maintaining a relatively simple device structure.
Solution Approach 2:
The system changes the heating parameters (power level, duration, cycle frequency) based on detected bread characteristics. By dynamically modifying these parameters rather than using fixed heating elements, the toaster achieves versatility across different bread types while avoiding the need for multiple heating elements or complex mechanical adjustments.
3Reliability
If conventional toasters heat bread for preset duration, then heating coverage is uniform, but overcooking risk increases
Solution Approach 1:
Light sensors continuously monitor the toasting process and provide real-time feedback to the controller. When the desired browning level is detected, the controller automatically adjusts or terminates heating, preventing overcooking. This feedback mechanism allows the heating duration to be dynamically optimized rather than fixed, reducing the risk of overcooking while maintaining reliable consistent results.
Solution Approach 2:
The heating element operates in periodic cycles with the controller alternating between heating phases and monitoring phases. During monitoring phases, light sensors assess the toasting progress, allowing the system to prevent overcooking by terminating or reducing heating before the preset duration expires, thereby improving reliability while optimizing heating duration.
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 faster toasting without moisture evaporation, ensuring consistent results across different bread types and shapes by dynamically controlling the heating elements and movement mechanism, reducing the risk of overcooking.
Implementation Method 1
a heating element/heater with an electromagnetic emission profile smaller than a larger surface of a food item
Implementation Method 2
using light sensors to monitor and adjust the toasting process
Data Source
AI summary
Several embodiments include a cooking instrument having: a housing frame defining a slot to fit a food item; a heater mechanically coupled to the housing frame and adapted to produce electromagnetic waves to heat the food item; one or more optical feedback components configured to measure light intensity at one or more regions in the slot perpendicular to an opening of the slot; and a controller configured to control the heater based on an output of the optical feedback components.