OPPAIR cold dryer is a common industrial equipment, mainly used to remove moisture or water from objects or air to achieve the purpose of dehydration and drying.
The working principle of OPPAIR refrigerated dryer is mainly based on the following three core cycles:
Refrigeration cycle:
The dryer first compresses the low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure vapor through the OPPAIR screw air compressor. The high-temperature and high-pressure vapor enters the condenser, exchanges heat with the cooling medium (air or water), releases heat and gradually cools into a high-pressure liquid. The liquid refrigerant passes through the expansion valve, the pressure and temperature are reduced, and it becomes a low-temperature and low-pressure liquid and gas mixture. The low-temperature and low-pressure refrigerant enters the evaporator, exchanges heat with the compressed air to be dried, absorbs heat from the compressed air and evaporates into gas.
Air drying cycle:
The compressed air first enters the precooler, exchanges heat with the dried low-temperature compressed air, lowers the temperature and begins to condense some water. The precooled compressed air enters the evaporator, exchanges heat with the low-temperature refrigerant for the second time, further lowers the temperature, and condenses a large amount of water vapor into liquid water.
The compressed air containing liquid water enters the gas-liquid separator, the liquid water is separated and discharged through the automatic drain valve, and the dry compressed air continues its journey.
Drainage system:
The automatic drainer is responsible for draining the separated liquid water to ensure that there is no water accumulation inside the equipment and maintain the normal operation of the equipment.
These three cycles work together to ensure that the dryer can effectively remove moisture from the compressed air while keeping the air dry and pure.
Adjust the drain time of the dryer
Turn the drain time knob: Turn the drain time knob on the dryer to set the drain time according to your needs. For example, if you need to change the drain time, you can adjust this knob to achieve the desired drain time.
Turn the interval time knob: At the same time, you also need to adjust the interval time knob to set the interval time. This ensures that the machine drains regularly during continuous operation.
Manual test: By pressing the test button (test), you can manually trigger a drain process to check whether the drain function is working properly.
Please note that different dryer models may have different default drain settings. For example, the default drain time for models FD005KD~039KD may be 2 seconds, while FD070KD~250KD may be 4 seconds. The specific time may vary. It is recommended to refer to the user manual of the equipment or contact the manufacturer for more accurate guidance.
OPPAIR is looking for global agents, welcome to contact us for inquiries: WhatsApp: +86 14768192555
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Post time: Mar-11-2025
