Rotating Drum Tortilla Toaster for Fast Even Batch Heating
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Solution Overview
Problem
Conventional methods for warming tortillas, such as skillet heating and microwave cooking, are inefficient and do not achieve the desired consistency or safety, as they either require excessive time or result in tortillas becoming too moist.
Innovation Solution
A tabletop tortilla toaster that can heat six standard tortillas in about 90 seconds, using Nichrome wires wrapped around a mica board for even heating, with a barrel or drum pivot to deliver toasted tortillas safely onto a plate, and is designed to prevent electrical shock or electrocution by eliminating exposed wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If skillet heating method is used to warm tortillas, then the tortilla surface is toasted and acquires a skin, but the process requires a minimum of one minute per side and can only warm four tortillas at a time
Solution Approach 1:
The heating device is segmented into multiple independent heating zones (at least three heating elements positioned at different locations), allowing simultaneous heating of multiple tortillas in different stages of the toasting process. This enables batch processing of 6-12 tortillas rather than one at a time.
Solution Approach 2:
The device incorporates a rotating drum mechanism that dynamically moves tortillas through different heating zones. The rotation speed and positioning are optimized to ensure each tortilla receives appropriate heat exposure time, enabling continuous processing and higher throughput compared to static skillet heating.
2Temperature
If microwave oven is used to warm tortillas, then the tortilla is warmed from the inside out, but the tortillas become too moist and do not achieve the desired consistency
Solution Approach 1:
The device applies different heating characteristics to different zones: external heating elements provide toasting and browning on the tortilla surface, while the rotating drum design allows controlled moisture evaporation. This creates the desired crispy exterior while maintaining appropriate internal moisture, unlike microwave's uniform internal heating that creates excessive moisture.
Solution Approach 2:
The continuous rotation of the drum ensures constant exposure to heating elements, maintaining optimal heating conditions throughout the process. This continuous action allows precise control over the toasting process, achieving consistent texture and moisture levels that discrete microwave heating cannot provide.
3Power
If bread toaster with exposed electric wires is used, then heating can be provided, but there is a risk of shock or electrocution if a utensil contacts the electric wires
Solution Approach 1:
The device uses a rotating drum as an intermediary carrier between the heating elements and the user. The drum rotates to deliver cooked tortillas to a discharge position away from the heating zone, eliminating the need for users to reach into the heating area with utensils, thus preventing contact with exposed wires.
Solution Approach 2:
The rotating drum mechanism automatically transports and delivers the cooked tortillas to the discharge position without requiring user intervention in the heating zone. The system serves itself by mechanically moving the product through the heating and cooling zones, eliminating the safety hazard of manual utensil insertion near exposed electrical components.
4Productivity
If conventional tortilla warming devices are used, then heating can be provided, but the device complexity increases with multiple components and exposed wires
Solution Approach 1:
The rotating drum serves multiple functions: it acts as a conveyor belt for moving tortillas through heating zones, a cooling rack for discharged tortillas, and a safety barrier isolating users from exposed electrical components. This multi-functionality reduces the need for separate components and simplifies the overall device structure while maintaining high productivity.
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 tortilla toaster provides rapid, even heating of multiple tortillas simultaneously, ensuring consistent toasting without the risks of burns or electrocution, while maintaining the desired texture and safety.
Implementation Method 1
heat is provided by Nichrome wires wrapped around a mica board
Implementation Method 2
Nichrome wires wrapped around a mica board for even heating
Data Source
AI summary
An improved tortilla toaster that batch heats on two sides simultaneously up to six tortillas where each tortilla is held an optimal distance away from heating source and the oven is unloaded by barrel-rolling the oven assembly so as to avail of gravity and tortilla shape to unload the oven.