Stackable cooking apparatus
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Solution Overview
Problem
Existing cooking apparatuses, such as ovens, face issues with uneven cooking, high costs, complex maintenance, and safety concerns due to the need for multiple heat sources and hazardous materials like asbestos, which limit their convenience and safety for cooking a variety of food items.
Innovation Solution
A stackable cooking apparatus comprising a lower vessel with a perforated top wall and an upper vessel that can be mounted atop the lower vessel, allowing for convective heat transfer without fans, with features like gripping members for stabilization and a temperature sensor for precise temperature monitoring, enabling simultaneous cooking of multiple items using a single heat source and various heat sources like wood, propane, or radiant heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional ovens are used for cooking, then a single oven can cook a variety of foods, but hot spots develop that result in uneven cooking
Solution Approach 1:
The cooking system is segmented into multiple stacked vessels (e.g., lower vessel, middle vessel, upper vessel) that can be independently positioned at different heights. This segmentation allows each food item to be placed in the optimal position relative to the heat source, enabling even cooking across multiple items while maintaining the versatility to cook different types of food simultaneously
Solution Approach 2:
The invention introduces vertical stacking as an additional dimension for cooking arrangement. Instead of horizontal placement that creates hot spots, multiple vessels are stacked vertically at different heights above the heat source, allowing each vessel to receive appropriate heat distribution based on its position, thereby achieving even cooking while maintaining versatility
2Manufacturing precision
If convection ovens with fans are used, then more even heating is achieved, but the device complexity and cost increase
Solution Approach 1:
The system uses the natural convective currents generated by the heat source itself to circulate hot air through and around the stacked vessels. The perforated walls of the vessels allow hot air to pass through, creating natural convection patterns that provide even heating without requiring external fans or complex mechanical systems
Solution Approach 2:
The invention extracts the essential function of convection (even heat distribution) from its complex mechanical implementation (fans and motors). By utilizing natural convective currents and strategically positioned perforated vessels, the system achieves even heating through passive thermal convection alone, eliminating the need for active mechanical convection components
3Adaptability or versatility
If multiple individual heating sources are used for each oven, then each oven can operate independently, but the cost and complexity increase
Solution Approach 1:
Multiple cooking vessels are merged into a single integrated stacking system that shares a common heat source. The vessels can be stacked in different configurations and combinations, allowing independent control of each vessel's cooking parameters while utilizing the shared thermal field, thereby reducing overall system complexity and cost
Solution Approach 2:
The stacked vessel system creates a universal cooking platform where a single heat source can simultaneously cook multiple different types of food in different vessels at different temperatures and times. Each vessel maintains its own cooking independence through adjustable positioning and removable design, while the entire system benefits from the multi-functionality of the shared thermal environment
4Temperature
If hazardous materials like asbestos are used in cooking apparatus, then heat resistance is improved, but safety concerns arise
Solution Approach 1:
The cooking vessels are constructed from composite materials that combine heat-resistant properties with safety. The vessels incorporate heat-resistant coatings or material compositions that can withstand high cooking temperatures without releasing harmful substances, replacing hazardous materials like asbestos while maintaining the necessary thermal resistance for effective cooking
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 stackable cooking apparatus provides even cooking, reduces costs by using a single heat source, and enhances safety by eliminating the need for hazardous materials, offering versatility and convenience in cooking multiple items simultaneously.
Implementation Method 1
the upper vessel being adapted to receive heat thereinto flowing from the lower vessel, through the perforation and into the upper vessel to heat the upper vessel for cooking the food item
Data Source
AI summary
An apparatus includes a lower vessel and an upper vessel mounted atop the lower vessel. The lower vessel, which can be disposed on the heated surface of a stove, includes a first top wall having apertures therethrough, and defines a first volume in the lower vessel. The upper vessel includes a second top wall free of apertures, and defines a second volume in the upper vessel. Food items to be cooked are placed on the first top wall so that the food item resides in the second volume. Heat from the heated surface rises into the first volume, through the apertures and into the second volume, to cook the food item therein. Means are provided for maintaining the vertical stability of the vessels when the vessels are stacked.