Rooftop Air-Cooled Unit Vibration Isolation Case
After installing rooftop air-cooled modular units, effective vibration isolation is essential. Without proper treatment, vibration and noise can seriously affect indoor comfort and building operation.
In a hotel project, guests on the top floor experienced continuous vibration and noise after the rooftop air-cooled units were installed. This led to customer complaints, disrupted hotel operations, and delayed project acceptance and payment, causing difficulties for both the hotel and the installation contractor.
The contractor initially installed rubber damping pads under the unit feet, but the vibration reduction effect was poor. After on-site inspection, Anlijing's engineers identified the cause: the operating frequency of the air-cooled unit (15–20 Hz) was close to the natural frequency of the rubber pads, resulting in resonance and loss of isolation performance.
Based on the actual conditions, Anlijing selected air spring vibration isolators with a natural frequency of 2–4 Hz and a damping ratio of 0.06–0.08. This solution effectively avoided resonance and significantly reduced vibration transmission to the floor slab and steel structure, achieving excellent vibration isolation results.
Anlijing Vibration Reduction Technology Co., Ltd. specializes in the research, development, and manufacturing of vibration isolation products for a wide range of electromechanical equipment. The company offers five major product categories, including spring isolators, rubber isolators, air-film vibration isolators, air-cushion vibration isolators, and wire rope isolators, with thousands of models and specifications to meet diverse application requirements across the electromechanical industry.
In addition to standard products, Anlijing provides comprehensive vibration control services such as on-site vibration measurement, isolation system design, and customized product development, delivering reliable and effective vibration reduction solutions tailored to specific operating conditions.
