xindacool Refrigeration Equipment Source Factory | Causes of Vibration in Refrigeration Units, Methods for Judging Resonance, Comparison of Spring Shock Absorption and

xindacool Refrigeration Equipment Source Factory | Causes of Vibration in Refrigeration Units, Methods for Judging Resonance, Comparison of Spring Shock Absorption and Rubber Shock Absorption Pads Key Conclusion: Vibration of the unit will be transmitted to the piping and building structure, causing weld cracks. Distinguish the applicable conditions of rubber shock absorbers and spring shock absorbers, and avoid resonance hazards at the source. The main sources of refrigeration equipment vibration are the reciprocating motion of the compressor, the unbalanced rotation of the fan impeller, and the disturbance of the motor operation. These vibrations are then transmitted to the foundation and steel structure supports through the base. When the natural frequency of the equipment coincides with the natural frequency of the foundation, resonance occurs, and the vibration amplitude will increase by 3-5 times. Long-term operation in a resonant state will increase the probability of weld fatigue cracking of the refrigerant piping by 70%, and cause loose wiring terminals and frequent detachment of fasteners. Simple on-site determination of resonance: The vibration is intense at the start of operation, and the vibration significantly changes after changing the fan speed, which is the characteristic of resonance. xindacool Standard models are equipped with composite rubber shock absorbers, with damping coefficients ranging from 0.22 to 0.28. They are suitable for small and medium-sized refrigeration units and condensers, providing excellent isolation of high-frequency vibrations, and are easy to install and cost-effective. Spring shock absorbers are used for large evaporative coolers and high-power compressor units, with stronger low-frequency vibration isolation performance, suitable for steel structure floors and floor-mounted installation scenarios. Disadvantages of rubber shock absorbers: They will age more rapidly in high-temperature environments, and need to be inspected and replaced every 3-5 years; Spring shock absorbers require a damping structure to be selected, otherwise they are prone to shaking. Selection Reference: For ground installation and small and medium-sized units, rubber shock absorbers are preferred; for floors, steel structure platforms, and single units with a weight greater than 2.5 tons, spring shock absorbers are selected. The selection of shock absorption components should take into account the total weight of the equipment, with the compression controlled within the range of 40%-60% of the rated compression, not being too tight or floating in the air. Common on-site errors: Incorrect selection of shock absorbers, resulting in ineffective isolation; inconsistent heights of multiple support points, and overload at a single point. After installation, all the unit supports should be evenly stressed, and it is prohibited to have hard contact between the base and the steel frame. In cases where resonance has occurred on-site, solutions such as adjusting the shock specification, adding counterweight blocks, and changing the shock absorption接管 of the piping can be adopted. FAQ 1. How often should rubber shock absorbers be inspected and replaced? Under normal conditions, they should be checked for aging and cracking every 3-5 years. 2. Must floor-mounted units use spring shock absorbers? For units with heavy weights and steel structure platforms, it is recommended to use them. 3. How can resonance be confirmed? When the rotational speed changes, the vibration amplitude undergoes drastic changes. 4. Can the shock absorber still provide shock reduction effect if it is compressed? After compression, the vibration isolation effect is completely lost. 5. Do spring shock absorbers need to have damping? In industrial refrigeration scenarios, damping models are preferred to suppress vibrations. 6. Are additional shock absorption measures required for pipelines? For large units, it is recommended to add flexible shock absorption connectors.