Refraction window dryer (also known as an optical window dryer, sight glass dryer, or anti-fogging device for sight glasses) is an auxiliary unit that utilizes clean, dry air or inert gas to continuously purge the observation windows (refraction windows, sight glasses, or viewing ports) of equipment. Its primary function is to prevent fogging, condensation, and contamination caused by the accumulation of moisture, vapor, condensate, or dust, thereby ensuring that operators can clearly monitor the internal production status of the equipment in real time.
The device typically comprises an air filtration system, a pressure-reducing unit, a flow control valve, a purge nozzle, connecting piping, and control components; depending on specific process requirements, compressed air, nitrogen, or clean air may be used as the purging medium.
