Conference_programme: 23: Structural acoustics and vibration

Lecture: Suspension optimization for an hermetic compressor assembled on a refrigerator

Author(s): Sardá Alexandre, Lenzi Arcanjo

Summary:
Noise annoyance generated by refrigerators and hermetic compressors is evaluated using the Sound Power Level (SPL) parameter measured in a reverberant room or using a semi anechoic chamber. When the compressors are assembled in a base plate, these Sound Power Levels can be changed depending on the new system configuration (refrigerator) and the way it is assembled. The vibration generated in the compressor is transmitted to the base generating noise on this surface. This work aims to model the suspension of a general machine assembled in a flexible base and minimize the vibratory power flow transmitted to the base through an optimization process, depending on parameters as spring inclination (orientation), stiffness and suspension damping. Decreasing the power flow to the base, reduction in the global levels of noise and vibration on the base plate will occur.

Corresponding author

Name: Prof Alexandre Sarda

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Country: Brazil