2026-06-24Views：
The core of the hospital's requirements for air compressors is three words: clean, quiet and constant.
Clean is the first. Hospital compressed air in direct contact with the patient's breathing gas and surgical instruments, even a little oil can cause serious pollution. Therefore, the hospital only uses oil-free air compressors, and the traditional oil injection machines are absolutely impossible. In addition to oil-free, the moisture and particulate matter in the air must also be removed. The system should be equipped with a dryer and a multi-stage filter to extremely low water pressure in the air and filter the particulate matter to extremely fine. Some scenes also require the removal of microorganisms.
Quiet is a hard indicator. The hospital is a place for patients to rest. The noise of the air compressor must be kept very low, preferably between 50 and 60 decibels, which is lighter than the normal voice. When selecting the type, give priority to the scroll type or screw type oil-free machine. The piston type is too noisy and is generally not recommended in hospitals.
Constantly is the bottom line. The operating room, ICU and emergency department cannot be cut off for a moment, so the system must have a standby unit. The usual practice is to match two or even more sets of equipment, one set is broken and the other is immediately topped, and the gas storage tank should be large enough to buffer the fluctuation of supply and demand. In addition, the voltage fluctuation of the hospital power grid is relatively large, and the air compressor must be able to start normally and operate under pressure when the voltage drops obviously, and cannot lie down as soon as the power is lost. Maintenance should also be as simple as possible, the hospital logistics manpower is limited, the equipment is best maintenance-free or maintenance cycle is very long, the longer the filter element replacement cycle, the more worry.
Water lubricated air compressor in the hospital scene is very matching. It uses clean water instead of lubricating oil. The water forms a water film inside the machine to reduce friction, seal gaps, and take away heat. There is no oil from the source, and the output air is naturally oil-free. Because there is no need for the oil system, the structure is much simpler than the traditional air compressor, and there is no risk of oil vapor diffusion. The water-lubricated machine runs smoothly, and the noise can usually be controlled at a low level, which meets the requirements of the hospital for a quiet environment. When it participates in the work, the output oil-free air is dried and filtered, and then supplied to the terminals of the ventilator, oxygen generator and dental equipment that directly contact the patient, so there is no need to worry about oil pollution in the whole process. Especially in the operating room, ICU and neonatal department, which require extremely high air quality, the water lubricated air compressor and the back-end drying and filtering system can achieve a very high level of air cleanliness, while the maintenance burden is lighter than that of traditional machines, and there is no need to deal with the troubles of oil circuit blockage and oil-gas separation core aging.
To sum up, the selection of air compressors in hospitals is to choose oil-free, low-noise, with standby, and carry voltage fluctuations. Water-lubricated air compressors can be used on these several items, which is an ideal choice for clean air sources in hospitals.
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