Wireless Ohmic Cooking Device with Induction Power
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Solution Overview
Problem
Existing cooking devices using ohmic heating are limited by the need for a cable to power the appliance, which restricts mobility and poses safety hazards during operation.
Innovation Solution
A cooking device with a cooking chamber containing two insulated electrodes, a control unit for applying voltage, and an induction unit for receiving electromagnetic energy, allowing for wireless power supply and flexible placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a cable is used to power the small appliance for ohmic heating, then the appliance can be powered, but the range of movement is limited and safety hazards increase
Solution Approach 1:
The patent replaces the mechanical cable connection system with an electromagnetic induction system. The induction unit receives electromagnetic energy from an induction hob and converts it to electrical energy, eliminating the need for a physical cable connection and enabling wireless power supply to the cooking device
Solution Approach 2:
The induction unit acts as an intermediary between the induction hob and the cooking device. It receives electromagnetic energy from the hob and converts it to electrical energy for the electrodes, serving as a wireless power transmission interface that eliminates the cable
2Use of energy by moving object
If a cable is used to power the small appliance, then power can be supplied, but safety hazards increase during operation
Solution Approach 1:
The patent replaces the mechanical cable connection with an electromagnetic induction system, eliminating exposed cable connections that could pose safety risks. The wireless power transmission through electromagnetic fields removes the physical hazards associated with cable-based power supply
3Ease of operation
If a cooking device with electrodes is permanently placed in the kitchen, then it is always available for use, but the required space increases
Solution Approach 1:
The cooking device is designed to work with the induction hob already present in modern kitchens, making it compatible with existing infrastructure. This allows the device to be stored away when not in use and simply placed on the hob when needed, eliminating the need for dedicated permanent space
Solution Approach 2:
The cooking device transitions from a static permanently-installed appliance to a dynamic portable device that can be moved between storage and usage locations. The wireless induction power supply enables this mobility while maintaining continuous availability for cooking operations
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 device enables safe and flexible food preparation by eliminating the need for a power cord, reducing the risk of electrical hazards, and allowing for efficient use of kitchen space.
Implementation Method 1
an induction unit (135) configured to receive electromagnetic energy from outside the cooking device
Implementation Method 2
the use of 'ohmic heating,' i.e., the passage of electricity through food for food preparation
Data Source
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AI summary
The invention relates to a cooking device (100) for preparing food (120) by means of a current flow, wherein the cooking device (100) comprises a cooking chamber (110) in which two electrically insulated, exposed electrodes (115) are provided for introducing a current flow into the food (120), and a control unit (130) designed to apply and/or control an electrical voltage to the two electrodes (115). Furthermore, the cooking device (100) comprises an induction unit (135) designed to receive electromagnetic energy (150) from outside the cooking device (100).