Abstract: Investigates the vibration and noise reduction of a household blender operating at high rotational speeds. Through comprehensive vibration and acoustic testing, structural noise induced by mechanical vibration was identified as the dominant noise source. The vibration transmission paths were systematically analyzed to determine critical isolation targets. Based on vibration isolation theory, isolators were optimally designed and deployed along the key transmission paths. Frequency response simulation verifies the compliance of the vibration isolation design. Experimental results demonstrated that the implemented isolation system achieved a 75.80% reduction in peak vibration amplitude and a 6.93 dB(A) decrease in overall sound pressure level. Establishes a systematic methodology for response analysis and vibration isolation optimization applicable to high-speed rotating machinery such as blenders.

Key words: Blender, Vibration isolation, Noise reduction