Induction-Heated Server Body for Plate-Free Food Heat Retention
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Solution Overview
Problem
Existing induction-based heat retentive servers require preheating of plates, which is energy-intensive, space-consuming, and poses safety hazards, as they need to maintain high temperatures for serving food at 140° F or higher for extended periods without preheating the dish.
Innovation Solution
A heat retentive server system with an induction-heatable member enclosed within a body, using thermal material for controlled heat transfer to maintain the serving temperature without preheating the dish, where the induction-heatable member is heated to a higher temperature than the body, allowing the dish to reach and maintain a serving temperature of 140° F or higher for one hour without prior heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If preheating of plates is performed to maintain food serving temperature, then food serving temperature is maintained, but energy consumption increases
Solution Approach 1:
The server body is preheated by the induction-heatable member before the dish is placed on it. This preliminary heating of the server body allows the dish to be heated passively after placement, eliminating the need for separate preheating of the dish and reducing overall energy consumption while maintaining food serving temperature.
Solution Approach 2:
The server body acts as an intermediary thermal medium between the induction-heatable member and the dish. The induction-heatable member heats the server body, which then transfers heat to the dish, providing controlled and efficient heat transfer that reduces energy consumption compared to direct dish preheating.
2Temperature
If preheating of plates is performed to maintain food serving temperature, then food serving temperature is maintained, but device complexity increases
Solution Approach 1:
The heating function is merged into the server body itself through the induction-heatable member, eliminating the need for separate dish preheating devices. The server body and heating mechanism are combined into a single unit, reducing device complexity while maintaining the ability to heat food to serving temperature.
Solution Approach 2:
The server system performs self-heating through the induction-heatable member that automatically heats the server body when activated. This self-service heating capability eliminates the need for external preheating equipment or manual intervention, simplifying the overall system while maintaining temperature control.
3Temperature
If high temperature is maintained in the server body, then food serving temperature is maintained, but safety hazards increase
Solution Approach 1:
The server body serves as a thermal intermediary between the high-temperature induction-heatable member and the dish. This intermediary structure allows the induction-heatable member to reach high temperatures for efficient heating while the dish and food are exposed to more moderate temperatures, reducing safety hazards from direct contact with extreme heat.
Solution Approach 2:
Different parts of the server system have different temperature characteristics. The induction-heatable member operates at high temperature for efficient heating, while the server body and dish surfaces maintain lower temperatures for safety. This local differentiation of temperature quality allows high-temperature heating while minimizing safety hazards to users.
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 system effectively maintains food at a serving temperature of 140° F or higher for one hour without preheating the dish, reducing energy consumption and safety risks while maintaining efficiency and safety in food service settings.
Implementation Method 1
induction heating the induction-heatable member to a temperature greater than the heat deflection temperature of the body while the induction-heatable member is enclosed within the body
Implementation Method 2
allowing heat transfer from the server to the dish to increase the temperature of the dish. The heat transfer from the server to the dish may be buffered by buffering material positioned between the induction-heatable member and the body
Data Source
AI summary
A heat retentive server includes a chamber defined between an upper shell and a lower shell that are connected to one another. An induction-heatable member is positioned in the chamber, and the induction-heatable member may be heated by electromagnetic induction to a first temperature that is greater than the heat deflection temperature of the upper shell. Buffering material is positioned in the chamber between the induction-heatable member and the upper shell, and the buffering material is adapted for providing predetermined conductive heat transfer from the induction-heatable member to the upper shell so that at least a portion of the upper shell is heated to a second temperature that is greater than the heat deflection temperature of the upper shell. The second temperature is less than the first temperature.