Integrated Filter Unit for Induction Cooktop Power Supply
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Solution Overview
Problem
Existing induction cooking appliances have inefficiencies in filtering power units and power supply units, leading to increased component count, cost, and energy consumption, particularly in inactive modes.
Innovation Solution
Designing the main filter unit and secondary filter unit as a single piece with a common filter unit for filtering the power supply unit in inactive modes, reducing the secondary filter's power requirements and eliminating unnecessary components like capacitors, while optimizing space and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate main filter unit and secondary filter unit are used, then filtering performance is improved, but device complexity and component count increase
Solution Approach 1:
The patent combines the main filter unit and secondary filter unit into a single integrated filter unit that performs both filtering functions simultaneously. The integrated design includes a first inductor and first capacitor for main filtering, and a second inductor and second capacitor for secondary filtering, all within one unified structure, thereby reducing component count while maintaining filtering performance
Solution Approach 2:
The integrated filter unit serves multiple functions: it acts as both the main filter unit for filtering the power unit and the secondary filter unit for filtering the power supply unit. This multi-functional design eliminates the need for separate dedicated filter units, reducing overall device complexity
2Object-affected harmful factors
If additional capacitor is added to secondary filter unit, then electromagnetic compatibility is improved, but manufacturing cost increases
Solution Approach 1:
The first capacitor in the integrated filter unit serves dual purposes: it functions as the capacitor for the main filter unit and simultaneously as the capacitor for the secondary filter unit. This eliminates the need for an additional dedicated capacitor in the secondary filter unit, reducing component count and manufacturing cost while maintaining electromagnetic compatibility
Solution Approach 2:
The patent merges the capacitor requirements of both filter units into a single shared capacitor component. The first capacitor is electrically connected to provide filtering capability for both the main filter path and the secondary filter path, thereby eliminating redundant components
3Reliability
If separate filter units with individual capacitors are used, then filtering capability is improved, but installation space increases
Solution Approach 1:
The patent integrates both filtering functions into a single compact filter unit structure. The first inductor, second inductor, first capacitor, and second capacitor are all housed within one unified assembly, significantly reducing the installation space required compared to having separate physically distinct main filter unit and secondary filter unit assemblies
Solution Approach 2:
The integrated filter unit employs a nested arrangement where the second inductor and second capacitor (for secondary filtering) are incorporated within the same structural envelope as the first inductor and first capacitor (for main filtering). This nesting approach maximizes space utilization efficiency
4Reliability
If discharge unit is added for capacitor, then safety is improved, but device complexity increases
Solution Approach 1:
The discharge unit is integrated into the existing second inductor component of the integrated filter unit. The second inductor serves dual functions: as the inductor for secondary filtering and as the discharge path for the first capacitor. This eliminates the need for a separate dedicated discharge component, maintaining safety functionality while avoiding additional device complexity
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 approach reduces the number of components, lowers costs, enhances electromagnetic compatibility, and achieves a more compact and energy-efficient induction cooking appliance design.
Implementation Method 1
a main filter unit for filtering the power unit and having a secondary filter unit for filtering the power supply unit
Data Source
AI summary
An induction cooking appliance apparatus includes a power unit designed to supply an induction heating unit with power in one operating state, a power supply unit designed to supply energy to a further unit in the operating state, a main filter unit designed to filter the power unit, and a secondary filter unit designed to filter the power supply unit. The main filter unit and the secondary filter unit are designed at least in part as a single piece and share a common filter unit for filtering the power supply unit in an inactive mode of the power unit.