Induction Cooking Appliance Filter Switching for Lower Power Consumption
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Solution Overview
Problem
Existing cooking appliances, particularly induction cooking appliances, face challenges in achieving cost-effective design and efficient power management due to the need for separate filtering of power units and power supply units, which increases complexity and cost.
Innovation Solution
A cooking appliance design that integrates a main filter for operating mode and a secondary filter for inactive mode, with a switching unit to change filter assignments, reducing the need for insulation and circuit synchronization, and optimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate filtering is implemented for power units and power supply units, then filtering effectiveness is improved, but device complexity and cost increase
Solution Approach 1:
The main filter is designed to perform multiple functions: it filters the power unit during operation mode and also filters the power supply unit during inactive mode. This multi-functional design eliminates the need for separate filtering circuits for each component, thereby reducing device complexity while maintaining effective filtering for both power units and power supply units across different operating states
2Reliability
If main filter is permanently connected to power supply network, then filtering coverage is improved, but energy loss and cost increase
Solution Approach 1:
The filtering configuration is made dynamic through a switching unit that automatically connects or disconnects the main filter from the power supply network based on the operating mode. During operation mode, the main filter is connected to filter the power unit; during inactive mode, it is disconnected to avoid unnecessary energy consumption. This dynamic adaptation ensures filtering coverage is provided only when needed, reducing energy loss while maintaining reliability
3Reliability
If insulation of power supply unit is implemented, then safety is improved, but manufacturing cost increases
Solution Approach 1:
The harmful electrical interference and noise are extracted and filtered out by the main filter before they can affect the power supply unit. By removing these harmful factors through filtering, the need for additional insulation measures is eliminated, thereby maintaining safety while reducing manufacturing costs
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
This design achieves a cost-effective and efficient power management system by minimizing the connection time of the main filter to the power supply network, reducing power consumption, and simplifying the circuit, thereby lowering overall costs and enhancing the appliance's service life.
Implementation Method 1
In particular, a cooking appliance device with at least two consumers and at least one switching unit having at least one first multiple switching component
Implementation Method 2
Furthermore, a choke in particular can be reduced, since the secondary filter only carries an electrical current in the inactive mode
Data Source
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AI summary
The invention relates to a cooking appliance (26a-e), particularly an induction cooking appliance, having: at least one output unit (30a-e), which is intended, in an operating mode, to provide a heat output for a heating unit; at least one power supply unit (40a-e); a secondary filter (60a-e), which filters at least the power supply unit (40a-e) in an inactive mode; and a main filter (50a-e), which filters at least the output unit (30a-e) in the operating mode. According to the invention, in order to provide an appliance of the type in question with improved characteristics in respect of costs, the main filter (50a-e) additionally filters at least the power supply unit (40a-e) in the operating mode.