Modular Induction Food Warming for Flexible Low-Loss Heating
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Solution Overview
Problem
Existing warming systems for food in the catering trade are inefficient in energy use, inflexible, and require extensive maintenance, with high energy losses due to indirect heating and complex structures that cannot be easily expanded or adapted to changing needs.
Innovation Solution
A modular induction warming system with a central power and control unit connected to multiple induction warming devices via detachable power and data lines, allowing for flexible configuration and energy-efficient heating using induction coils and temperature sensors for precise temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If indirect heating via steam is used, then both bottom and side walls are heated evenly, but energy losses are high
Solution Approach 1:
The patent replaces the mechanical/thermal steam heating system with an electromagnetic induction heating system. Induction coils generate alternating magnetic fields that directly induce eddy currents in the metal container bottom, providing direct and efficient heating without requiring steam generation and circulation infrastructure.
Solution Approach 2:
The patent extracts the heating function from the steam generation system and places it directly at the container level through induction heating elements. This separates the heating function from the water circulation system, allowing independent optimization of each function.
2Device complexity
If a fixed number of warming basins are installed, then the system structure is simple, but the system is inflexible and cannot be expanded
Solution Approach 1:
The patent segments the warming system into independent modular units, each consisting of a warming basin with its own induction heating element and control circuitry. These modules can be independently added, removed, or configured based on actual needs, transforming a fixed system into a flexible modular architecture.
Solution Approach 2:
The patent introduces dynamic configurability to the warming system through modular design. The number and arrangement of warming basins can be dynamically adjusted according to space availability and demand, allowing the system to adapt to changing operational requirements without structural constraints.
3Reliability
If heating coils and water supply lines are included, then heating functionality is provided, but maintenance requirements increase
Solution Approach 1:
The patent replaces the complex mechanical water circulation system (heating coils, pumps, pipes, valves) with a simpler electromagnetic induction system. This eliminates water handling components that require regular maintenance such as decalcification, pump repairs, and leak checks.
Solution Approach 2:
The induction heating system requires minimal maintenance as the heating elements have no moving parts or consumable components. The system essentially maintains itself without requiring regular servicing of water circulation infrastructure.
4Reliability
If water must be heated first before placing food containers, then the system is safe, but startup time is long
Solution Approach 1:
The induction heating system performs preliminary heating action directly on the container bottom upon placement, eliminating the need to pre-heat water. The magnetic field is immediately activated when a ferromagnetic container is detected, providing instant heating response.
Solution Approach 2:
The induction heating system maintains continuous useful action by immediately heating the container bottom when food is placed, without interruption for water heating cycles. The magnetic field continuously induces eddy currents as long as the container remains in position, ensuring uninterrupted heat transfer to the food.
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 achieves energy-efficient operation, reduces startup time, and allows for easy expansion or contraction, maintaining consistent food temperatures with minimal maintenance, while optimizing space usage by only activating necessary heating elements.
Implementation Method 1
Each induction warming device contains at least one induction coil as part of an induction resonant circuit for generating an alternating magnetic field for the purpose of heating dishes placed on the warming field
Implementation Method 2
The container bottom is made of ferromagnetic material and can be heated by induction
Implementation Method 3
generating an alternating magnetic field for the purpose of heating dishes placed on the warming field
Data Source
Figure 1~4
Figure 2
AI summary
The invention relates to a modular heat-retaining system (1) for keeping food warm. Said system contains a plurality of induction heat retaining units (3a..d), each of which forms a heat-retaining area (4a..d), and further contains a common power and control unit (2) having a common power controller and a plurality of connection interfaces (9a..d), 10a..d) for individually connecting and individually activating the induction heat-retaining units (3a..d). In addition, the heat-retaining system (1) contains one or more operating units (11a..d), by means of which the induction heat-retaining units (3a..d) can be switched on or off individually. Each induction heat-retaining unit (3a..d) contains at least one induction coil as part of an induction resonant circuit for generating an alternating magnetic field. The power and control unit (2) contains control means for individual activation of the induction heat-retaining units (3a..d).