When installed on the rooftop, the air-cooled heat pump chiller generates low-frequency vibrations during operation. These vibrations are transmitted through the building structure to the rooms below. In addition, the water pump, installed directly on the ground without any vibration isolation measures, transmits operational vibrations to adjacent rooms, significantly affecting occupants’ work and rest.
Based on the on-site investigation and technical analysis, it was determined that the primary sources of vibration were structure-borne noise caused by the low-frequency vibrations of the air-cooled heat pump unit and the water pump itself.
First, develop a vibration isolation plan
Vibration isolators were installed at the base of the air-cooled heat pump, directly at the vibration source.
Additional anti vibration mounts were installed at the water pump, and vibration isolation mounts were applied to pipes and other rigid connections to interrupt vibration transmission paths.
After the vibration isolation devices were installed, the equipment was put into normal operation. During operation, no vibration transmission was detected in the rooms where vibration had previously been perceived, effectively eliminating the impact on the indoor environment.
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.
