Inductance Coil Acoustic Shield Winding Vibration Reduction
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Solution Overview
Problem
Conventional throttle coils emit significant noise due to mechanical vibrations, particularly from holding elements, which can lead to increased sound levels and efficiency issues when attempting to reduce sound emissions through noise insulation, resulting in high additional costs and technical problems.
Innovation Solution
The design incorporates angled connection brackets with reduced lateral bending and vibration, eliminating the need for diametrical connections, and features acoustic umbrella windings with increased electrical impedance and air gaps to minimize sound emissions, while maintaining mechanical stability and efficient current distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional holding elements are used to secure winding layers, then mechanical stability is maintained, but sound emissions increase due to mechanical vibrations
Solution Approach 1:
The patent removes the conventional holding elements (winding stars, tension elements) that cause vibrations and sound emissions. Instead, the winding layers are secured through their own structural integrity and the mechanical coupling achieved through angled connecting brackets that connect outer to inner layers, eliminating the need for separate holding elements that generate noise.
Solution Approach 2:
The patent introduces angled connecting brackets as intermediary elements that mechanically couple the outer winding layers to the inner winding layers. These brackets are designed to minimize vibrations while providing the necessary mechanical stability, serving as a low-noise mediator between the winding layers that eliminates the need for conventional vibration-prone holding elements.
2Stability of the object's composition
If diametrical connections are used to secure winding layers, then mechanical stability is improved, but lateral bending and vibrations increase
Solution Approach 1:
The patent employs angled connecting brackets that are asymmetrically positioned and oriented rather than using symmetrical diametrical connections. The brackets are arranged at specific angles (e.g., 45°, 60°, or 90°) relative to the coil axis, creating an asymmetric mechanical coupling that provides stability while avoiding the lateral bending and vibrations associated with diametrical connections.
Solution Approach 2:
The patent replaces straight diametrical connections with curved or angled connecting brackets that follow a more gradual transition. The brackets are designed with curved profiles or angled geometries that distribute mechanical stresses more evenly, reducing lateral bending moments and vibrations compared to rigid diametrical connections.
3Object-affected harmful factors
If noise insulation measures are implemented, then sound emissions are reduced, but additional costs and technical problems arise
Solution Approach 1:
The patent converts the potential harm of mechanical vibrations into a benefit by designing the angled connecting brackets to naturally dampen vibrations through their geometric configuration. The brackets are positioned and dimensioned to create mechanical coupling that dissipates vibrational energy, transforming what would be a noise problem into a vibration-damping feature that eliminates the need for additional noise insulation measures.
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 significantly reduces sound emissions by minimizing mechanical vibrations and noise sources, achieving low-vibration and low-noise operation while maintaining the necessary mechanical stability and thermal recovery capabilities.
Implementation Method 1
features acoustic umbrella windings with increased electrical impedance
Implementation Method 2
features acoustic umbrella windings with increased electrical impedance and air gaps
Data Source
Figure 1~3
Figure 4~5
Figure 6a~7c
AI summary
The invention relates to an inductance coil, particularly an inductance coil without iron core for use in electric power grids, comprising at least two cylindrical winding layers (1), which are disposed concentrically with respect to a coil center line (7) and are connected electrically in parallel. Said inductance coil comprises at least one means for reducing or minimizing sound emissions developing during operation of the inductance coil. At least the outermost winding layer (1) is designed as a current-conducting, acoustic shield winding (18) with respect to the winding layer (1) adjoining in the direction of the center line (7), wherein said shield winding (18) is dimensioned electrically such that it is designed for the transmission of a current intensity which is only a fraction of the current intensity which is to be transmitted by the adjoining winding layer (1). The invention further relates to a clamp-like retaining element disposed on at least one face end of the inductance coil for reducing sound emissions.