Magnetic circuit component, air blower, compressor, and refrigerating device
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Solution Overview
Problem
Traditional magnetic circuits generate vibration due to changes in magnetic force, necessitating a reduction in this vibration.
Innovation Solution
A magnetic circuit component with a core made of soft magnetic material and integrated dynamic dampers, comprising a weight and a connection that is elastically deformable, to reduce vibration by vibrating out of phase with the core.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional magnetic circuits are used, then the magnetic circuit structure is simple, but vibration is generated due to changes in magnetic force
Solution Approach 1:
A dynamic damper is introduced as an intermediary component between the magnetic flux changes and the stator core. The damper includes a weight member and a connection member that transmits magnetic flux while providing vibration reduction. This intermediary structure absorbs and dissipates vibration energy generated by magnetic force changes, preventing direct transmission to the stator core while maintaining the magnetic circuit's functional simplicity.
Solution Approach 2:
The connection member's elasticity is optimized to have a natural frequency that differs from the stator core's natural frequency. By changing the elastic parameters and mass distribution of the dynamic damper, the system transforms the vibration problem into a frequency-mismatch scenario where the damper vibrates at a different frequency than the core, thereby reducing resonant amplification and overall vibration levels.
2Object-affected harmful factors
If reinforcing plates with beam members are used, then electromagnetic vibration is absorbed, but the support rigidity of the stator core is reduced
Solution Approach 1:
The dynamic damper serves as an intermediary vibration absorption mechanism that does not compromise structural rigidity. Unlike reinforcing plates that directly support the stator core, the damper is positioned to absorb vibration through its weight member and elastic connection, allowing the core support structure to maintain its original rigidity while the damper handles vibration mitigation independently.
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 dynamic dampers effectively reduce stator core vibration by up to 98% in the frequency range of 3200 Hz to 3300 Hz, maintaining performance and reducing production costs.
Implementation Method 1
a connection that connects the weight with the yoke and that is elastically deformable
Implementation Method 2
the dynamic damper is integrated with the core... configured to reduce vibration of the core, wherein the dynamic damper includes a weight and a connection
Implementation Method 3
a core made of a soft magnetic material and including an annular yoke
Implementation Method 4
A traditional magnetic circuit that consists of closed circuits containing a magnetic flux is known. Such a magnetic circuit generates vibration due to a change in the magnetic force.
Data Source
AI summary
A magnetic circuit component forms part of a magnetic circuit. The magnetic circuit component includes a core made of a soft magnetic material, and a dynamic damper provided on the core. The core includes an annular yoke. The dynamic damper reduces vibration of the core. The dynamic damper includes a weight, and a connection that connects the weight with the yoke and that is elastically deformable. The dynamic damper is integrated with the core.