Compressor Housing Damping for Centrifuge Vibration
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Solution Overview
Problem
Laboratory centrifuges with cooling devices using compressors generate vibrations and noise, which can harm sample separation and disturb users.
Innovation Solution
A compressor housing with damping material, specifically viscoelastic polyurethane foam, is used to absorb vibrations in the range of 20 Hz to 100 Hz, reducing noise and vibration transmission to the centrifuge housing and rotor compartment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a compressor is used in the cooling device, then low temperatures can be generated to cool the rotor compartment, but vibrations and noise are generated which harm sample separation and disturb users
Solution Approach 1:
A damping material is introduced as an intermediary substance between the compressor and the compressor housing. This damping material absorbs and attenuates the vibrations generated by the compressor, preventing them from being transmitted to the housing and subsequently to the rotor compartment. The damping material thus serves as a mediator that blocks the transmission path of harmful vibrations while allowing the compressor to continue functioning for cooling purposes.
Solution Approach 2:
The damping material utilized in the compressor housing exhibits porous characteristics that enable it to absorb vibrations effectively. The porous structure of the damping material provides numerous interfaces for vibration energy dissipation through friction and material deformation, thereby reducing the transmission of compressor-generated vibrations to the housing and rotor compartment.
2Object-generated harmful factors
If damping material is added to the compressor housing, then vibrations and noise are attenuated, but the compressor housing becomes more complex and heat dissipation may be affected
Solution Approach 1:
The damping material is applied selectively to specific regions of the compressor housing rather than uniformly across the entire surface. This localized application focuses the damping effect on areas where vibration transmission is most problematic while minimizing the overall added complexity and preserving heat dissipation pathways in other regions of the housing.
Solution Approach 2:
Instead of providing complete coverage of the compressor housing with damping material, the invention applies damping material partially to the necessary areas. This partial action approach achieves sufficient vibration attenuation to solve the harmful effects while avoiding the excessive complexity and potential heat dissipation issues that would result from full coverage.
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 solution effectively attenuates compressor-generated vibrations and noise, improving sample separation results and user experience by minimizing disturbance.
Implementation Method 1
The compressor housing is at least regionally provided with a damping material which is capable of absorbing vibrations in the range from 20 Hz to 100 Hz
Implementation Method 2
A compressor housing with damping material, specifically viscoelastic polyurethane foam, is used to absorb vibrations
Data Source
AI summary
The present invention relates to a laboratory centrifuge having a cooling device which comprises a compressor enclosed by a compressor housing, with the compressor housing, in the region of the compressor head, being at least regionally provided with a damping material which is capable of absorbing vibrations in the range from 20 Hz to 100 Hz.