Integrated Housing Vibration Isolation for Electric Rotating Machines
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Solution Overview
Problem
Existing electrical rotating machines, such as motors and generators, produce undesirable vibration noises that require significant space for vibration isolation due to the additional intermediate mass and flexible elements needed, leading to increased installation space and associated problems.
Innovation Solution
Designing the intermediate mass as a housing for the active part and integrating it with the first flexible element, which is connected to a second flexible element for vibration isolation, allowing for a compact realization that reduces space requirements by using the housing as both a protective and decoupling element, and incorporating viscous vibration dampers in parallel with spring elements to manage resonance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional vibration isolation with separate intermediate mass and flexible elements is used, then vibration isolation effectiveness is improved, but installation space requirement increases
Solution Approach 1:
The patent combines the intermediate mass function with the housing structure into a single integrated component. The housing serves dual purposes: providing structural enclosure for the active part and functioning as the intermediate mass for vibration isolation. This merging eliminates the need for separate intermediate mass components and reduces the overall space required for vibration isolation installation.
Solution Approach 2:
The housing is designed to perform multiple functions simultaneously: it provides mechanical enclosure for the active part, serves as the intermediate mass for vibration isolation, and acts as a mounting structure for the flexible elements. This multi-functionality reduces the number of separate components needed and minimizes installation space.
2Reliability
If viscous vibration dampers are added in parallel with spring elements, then resonance control is improved, but device complexity increases
Solution Approach 1:
The patent uses a composite vibration isolation system combining spring elements and viscous vibration dampers working in parallel. The spring elements provide elastic support while the viscous dampers provide energy dissipation at resonance frequencies. This composite approach achieves reliable resonance control while maintaining relatively simple device structure through the straightforward parallel arrangement of the two element types.
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 solution significantly reduces the space needed for vibration isolation, enhances vibration decoupling efficiency, and reduces installation costs by utilizing the housing for multiple functions, effectively minimizing the transmission of vibrations and shocks to the environment.
Implementation Method 1
The first flexible element and/or the second flexible element have at least one spring element
Implementation Method 2
a viscous vibration damper being connected in parallel with at least one of the spring elements of at least one flexible element
Data Source
Figure 1~2
AI summary
The invention relates to an electric rotating machine (10) which has an active part (1), a first flexible element (5), a second flexible element (6), and an intermediate mass (3). In order to significantly reduce the required space for installing the electric rotating machine (10) in comparison to the prior art, the active part (1) is mechanically connected to the intermediate mass (3) via a first flexible element (5). The intermediate mass (3) is provided for being mechanically connected to a foundation via the second flexible element (6), and the intermediate mass (3) is designed as a housing (4) for the active part. The first flexible element (5), the intermediate mass (3) designed as the housing (4), and the second flexible element (6) are provided between the active part (1) and the foundation (5) in order to insulate against vibrations.