Noise Reduction Unit Core Arrangement for Compact Design
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Solution Overview
Problem
Existing noise reduction units with multiple cores face challenges in downsizing without compromising noise reduction effectiveness, as the placement of cores can deteriorate noise reduction effects due to magnetic flux interactions.
Innovation Solution
A noise reduction unit design featuring cores with through holes, where wires are wound around each core, and a core supporting member positions the cores parallel to each other with a predetermined gap in the through direction, preventing magnetic flux interference and allowing for closer core placement without deteriorating noise reduction performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple cores are disposed close to each other to downsize the noise reduction unit, then the volume of the noise reduction unit is reduced, but the noise reduction effect deteriorates due to magnetic flux interactions between cores
Solution Approach 1:
The patent applies dimensionality change by arranging cores in the through-direction (one dimension) rather than side-by-side in the radial direction. Multiple cores are stacked along the axial direction of the cylindrical housing, transforming the spatial arrangement from a two-dimensional planar layout to a one-dimensional linear stack. This dimensional reconfiguration allows cores to be closely spaced without radial interference, reducing the overall volume while preventing magnetic flux interactions that would occur in traditional side-by-side arrangements.
Solution Approach 2:
The patent segments the magnetic flux paths by introducing non-magnetic spacers between adjacent cores in the stack. These spacers divide the continuous magnetic field environment into isolated segments, preventing flux leakage and interaction between neighboring cores. This segmentation approach enables close core spacing for compactness while maintaining individual core performance and preventing the deterioration of noise reduction effects.
2Volume of moving object
If wires from different cores are in direct contact to further reduce space, then the volume is reduced, but magnetic flux interference occurs between wires
Solution Approach 1:
The patent introduces non-magnetic spacers as intermediary elements between wires from different cores. These spacers act as mediators that physically separate the wires while allowing compact arrangement, and simultaneously prevent magnetic flux coupling between adjacent wire turns. The spacers serve dual functions: mechanical support for maintaining wire positioning and magnetic isolation to eliminate harmful flux interference, enabling volume reduction without compromising electromagnetic performance.
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 enables the downsizing of noise reduction units while maintaining effective noise reduction by ensuring parallel magnetic fluxes and preventing direct contact between wires, thus enhancing the unit's compactness without sacrificing noise reduction capabilities.
Implementation Method 1
The cores each have formed therein a through hole. The wires are connected to a noise source and each wound around the corresponding core through the through hole.
Data Source
AI summary
A noise reduction unit includes a plurality of cores each having formed therein a through hole, a plurality of wires connected to a noise source and each wound around the corresponding core through the through hole, and a core supporting member that supports the plurality of cores. The core supporting member supports the plurality of cores in such a manner that the plurality of cores is disposed parallel to each other along a through direction of the through holes and spaced apart from each other with a predetermined gap in the through direction.