Induction Cooktop Power Supply via Electromagnetic Coupling
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Solution Overview
Problem
The existing power supply systems for electrical devices in kitchens require a direct connection to the mains 230V alternating current, which can be inconvenient and cluttered, especially when used with induction cooking appliances, as they need a free mains supply and may not be easily accessible due to distance from the cooking vessel.
Innovation Solution
A power supply device that couples with an induction cooking appliance using a receiving coil to generate an electrical energy signal from the appliance's electromagnetic field, converting it into a usable output signal through a conversion unit and providing it to electrical devices via an output interface, eliminating the need for a direct mains connection and allowing for efficient energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electrical devices are connected to mains power supply, then power can be supplied to electrical devices, but kitchen clutter increases and accessibility becomes inconvenient
Solution Approach 1:
The patent combines the power supply function with the induction cooking appliance by integrating a receiving coil into the appliance structure. This allows the induction appliance to serve dual purposes: cooking food and powering electrical devices simultaneously, eliminating the need for separate power supply connections and reducing kitchen clutter.
Solution Approach 2:
The induction cooking appliance is designed to perform multiple functions: thermal treatment of food products through induction heating and power supply to electrical devices through electromagnetic field coupling. The receiving coil enables the appliance to transfer electrical energy to various electrical devices, making it a universal power source for the kitchen environment.
2Loss of energy
If power supply device is placed far from induction coil, then electrical devices can be powered, but energy transfer efficiency decreases
Solution Approach 1:
The receiving coil acts as an intermediary element that couples the induction coil's electromagnetic field to the electrical devices. By placing the receiving coil within the induction appliance structure, it efficiently captures the electromagnetic energy and transfers it to connected devices, maintaining high energy transfer efficiency while allowing flexible device placement.
3Reliability
If receiving coil is placed far from induction coil, then power supply device can be positioned flexibly, but electromagnetic field interaction becomes insufficient
Solution Approach 1:
The receiving coil is strategically positioned within the induction appliance structure where the electromagnetic field is most intense. This local optimization ensures maximum electromagnetic field interaction and efficient energy capture, while the overall system design maintains positioning flexibility for the power supply device.
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
Enables the powering of electrical devices without a mains connection, reducing kitchen clutter and allowing simultaneous thermal treatment of food products, as the power supply device can be placed adjacent to the induction coil, providing a convenient and efficient energy solution.
Implementation Method 1
a receiving coil (6) configured to interact with an electromagnetic field generated, in use, by at least one induction coil (5) of the induction cooking appliance (2) and to generate an electrical energy signal in function of the electromagnetic field generated, in use, by the induction coil
Data Source
Figure 1
Figure 2
AI summary
There is described a power supply device (3) for supplying power to an electrical device (4) and configured to be coupled to an induction cooking appliance (2). The power supply device (3) comprises a receiving coil (6) configured to interact with an electromagnetic field generated, in use, by at least one induction coil (5) of the induction cooking appliance (2) and to generate an electrical energy signal in function of the electromagnetic field generated, in use, by the induction coil (5), a conversion unit (7) operatively connected to the receiving coil (6) and configured to convert the electrical energy signal originating from the receiving coil (6) into an output electrical energy signal; and an output interface (8) being operatively connected to the conversion unit (7) and configured to be connected to the electrical device (4) and to provide the output electrical energy signal to the electrical device (4).