How to reduce the noise of air-cooled chillers?

When it comes to air-cooled chillers, during use, due to the comprehensive treatment that enterprises will carry out for air-cooled chillers in the early stages of production, they will not produce high noise problems. But after running for a period of time, the noise of the air-cooled chiller will continue to increase. If not treated in a timely manner, it will have a serious impact on the safe operation of the air-cooled chiller. So how to reduce the noise of air-cooled chillers? Below, the Jimes Refrigeration editor will provide a detailed introduction for everyone.

1. The influence of the surrounding environment. The impact of noise and vibration on the surrounding environment of air-cooled chillers should be considered in design, and the noise level of compressors varies depending on different models and installation methods. Fully enclosed compressors have lower noise levels than semi enclosed compressors. The noise of axial flow fans varies with different wings and speeds, and the noise is lower when equipped with an eight pole motor than when equipped with a six pole motor. Before installing equipment for noise control, the design should be flexibly selected based on the surrounding conditions and noise requirements, striving for economic rationality. In order to reduce noise and vibration, the air-cooled unit and water pump are both equipped with vibration reduction foundations. Soft joints are installed at the inlet and outlet of the chiller unit and water pump, and noise reduction is installed around the air-cooled unit.

2. The shock absorber cannot be ignored. The noise control of air-cooled chiller projects should not only consider smooth exhaust and avoid backflow in the layout of the units, but also install shock absorbers at the base and inlet and outlet pipes of the units, and the seismic isolation efficiency should meet the design requirements. The air conditioning water main pipeline in the cooling and heating stations should be equipped with shock-absorbing hangers or brackets to prevent the vibration of the unit and water pump from being transmitted to other places through the pipeline.

3. Prioritize choosing brands with lower noise levels. At present, the noise of a single air-cooled heat pump is generally between 65-85dB. With each additional unit, the overall noise will increase by 3db. When there are many heat pumps in a project, it is difficult to control the noise. Therefore, in the selection of heat pump projects, the number of units should not be too many. In other words, heat pumps should not be used in large-scale air conditioning projects. Generally, the number of heat pumps in a project should not exceed 5.

That's all for how to reduce the noise of air-cooled chillers. They can be applied to CNC machine tools, coordinate boring machines, grinders, machining centers, combination machine tools, and various precision machine tool spindle lubrication and hydraulic system transmission media cooling. They can accurately control oil temperature, effectively reduce thermal deformation of machine tools, and improve machining accuracy.