Frequency conversion refrigerated air dryer

Supports customization with a processing capacity of up to 15900 CFM (cubic feet per minute).

Design features

The compressed air first enters the pre-cooler for initial cooling, and then passes through the pre-cooling/reheating section of the high-performance 3-in-1 plate heat exchanger for further cooling. It subsequently enters the evaporator section, where it is rapidly cooled and the condensed moisture is separated.The treated low-temperature compressed air then returns to the pre-cooling/reheating heat exchanger, where it exchanges heat with the incoming hot compressed air. This reheats the dry compressed air before it is discharged from the dryer.The refrigeration system precisely adjusts the compressor speed according to changes in system load. The operating frequency is automatically regulated to match the actual air treatment demand, ensuring stable and energy-efficient operation.

Pre-Cooler
The pre-cooler reduces the temperature of high-temperature compressed air. To achieve high heat transfer efficiency within a compact structure, a plate-fin heat exchanger is used. Its aluminum alloy construction provides excellent thermal conductivity, high heat transfer efficiency, and a compact design.

High-Performance 3-in-1 Plate Heat Exchanger
A specially engineered 3-in-1 plate heat exchanger has been developed for this series. It features a low pressure drop and large heat transfer area, with more than 30% greater heat transfer area than conventional 3-in-1 plate heat exchangers of the same air flow capacity.

Variable-Frequency Control System
The control program is specially optimized for this series, providing high control accuracy, fast response, and comprehensive real-time monitoring. Parameters monitored include compressed air inlet and outlet temperatures, pressure dew point, compressed air pressure, evaporation temperature, condensing temperature, suction temperature, evaporation pressure, condensing pressure, and refrigerant discharge temperature. An RS-485 communication interface is standard across the entire series.

Variable-Frequency Compressor
For enhanced operating stability, the entire series is equipped with Mitsubishi permanent-magnet DC inverter compressors. These compressors feature smooth operation, a wide frequency range, and low noise. The internal rotor is treated with an anti-wear coating, ensuring stable output even at ultra-high operating speeds.

To ensure stable performance and reliable long-term operation, the Frequency Conversion Refrigerated Air Dryer should be used under the following recommended conditions:

  • Applicable fluid: Compressed air, non-corrosive and non-flammable gas
  • Rated inlet pressure:0.7 MPa
    (0.6 MPa~1.0 MPa is allowed. Other working pressures are subject to customization)
  • Rated inlet temperature:45℃(Limit inlet temperature:≤80℃) 7 2
  • Pressure dew point:2℃~10℃
  • Outlet pressure dew point:<0.01 MPa
  • Inlet air temperature: 35℃
    (2℃~45℃ can be used)
  • Cooling method:Air-cooled/Water-cooled (optional)

For the best drying result, the dryer should be installed in a well-ventilated environment with stable inlet conditions. Proper pre-filtration is recommended to protect the internal heat-exchange system and maintain efficient condensate separation over long-term operation.

PB Series Cyclone Dust Collector

ModelAirflow Capacity (m³/min)Motor Power (kW)Inlet SizeWeight (kg)Overall Dimensions (L × W × H, mm)
LY-PB200AH28.51.5–5.5DN803101500 × 950 × 1600
LY-PB250AH32.01.5–6.2DN803401500 × 950 × 1600
LY-PB300AH37.02.1–7.8DN1004201750 × 1050 × 1825
LY-PB400AH45.02.5–9.2DN1004601750 × 1050 × 1825
LY-PB500AH55.03.1–10.5DN1255302100 × 1050 × 2000
LY-PB600AH65.03.5–11.8DN1255852100 × 1050 × 2000
LY-PB700AH75.03.8–14.5DN1256902200 × 1200 × 2180
LY-PB800AH85.04.2–15.8DN1257202200 × 1200 × 2180
LY-PB900AH90.05.0–18.5DN1508102400 × 1400 × 2410
LY-PB1000AH100.06.2–21.5DN1508552400 × 1400 × 2410
LY-PB1100AH110.06.5–23.5DN1508902400 × 1400 × 2410
LY-PB1200AH120.07.0–24.5DN1509252400 × 1400 × 2410

PB Series Cyclone / Water-Cooled Models

Model / SpecificationAirflow Capacity (m³/min)Input Power (kW)Connection SizeWeight, A/W (kg)Overall Dimensions, L × W × H (mm)
LY-PB100AN/WN13.51.1–3.5DN65220 / 2301250 × 800 × 1400
LY-PB120AN/WN17.51.25–4.2DN65245 / 2551400 × 800 × 1600
LY-PB150AN/WN22.01.4–5.1DN80255 / 2651400 × 800 × 1600
LY-PB200AN/WN28.51.5–5.8DN80280 / 2801500 × 950 × 1600
LY-PB250AN/WN32.01.52–6.2DN80295 / 3101500 × 950 × 1600
LY-PB300AN/WN37.02.1–7.8DN100350 / 3651750 × 1050 × 1825
LY-PB400AN/WN45.02.5–9.2DN100380 / 3901750 × 1050 × 1825
LY-PB500AN/WN55.03.1–10.5DN125450 / 4652100 × 1050 × 2000
LY-PB600AN/WN65.03.5–11.8DN125480 / 4902100 × 1050 × 2000
LY-PB700AN/WN75.03.8–14.5DN125580 / 5852200 × 1200 × 2180
LY-PB800AN/WN85.04.2–15.8DN125610 / 6202200 × 1200 × 2180
LY-PB900AN/WN90.05.0–18.5DN150715 / 7302400 × 1400 × 2410
LY-PB1000AN/WN100.06.2–21.5DN150750 / 7702400 × 1400 × 2410
LY-PB1100AN/WN110.06.5–23.5DN150780 / 8202400 × 1400 × 2410
LY-PB1200AN/WN120.07.0–24.5DN150810 / 8502400 × 1400 × 2410

Note: For capacities above 120 m³/min, or for special requirements related to materials or inlet temperature, customized solutions are available. All data is subject to change without prior notice.

The Frequency Conversion Refrigerated Air Dryer is widely used in industries that require clean, dry compressed air together with stable dew point performance and reduced energy consumption.

Precision Machining and CNC Systems

Provides dry compressed air for pneumatic components, cutting systems, and automated machining equipment, helping improve system stability and reduce moisture-related wear.

Electronics and Semiconductor Manufacturing

Suitable for sensitive production environments where moisture control is essential for product quality, equipment protection, and process consistency.

Automotive Painting and Assembly

Supplies dry compressed air for spray painting, robotic systems, and assembly lines, helping improve coating quality and reduce defects caused by moisture.

Food and Beverage Processing

Used in packaging, conveying, and process air systems where clean and dry compressed air supports hygiene standards and stable production performance.

Pharmaceutical and Chemical Production

Suitable for compressed air applications that require reliable moisture removal, stable air quality, and consistent equipment performance in controlled industrial environments.

Printing, Packaging, and Industrial Automation

Helps maintain clean and stable compressed air for printing machines, packaging systems, and automated production lines, improving efficiency and reducing downtime.

Explore More Industry Applications

Lingyu offers much more than top-quality compressed air dryers:

– As an air treatment and gas purification manufacturer, we can meet all your compressed air quality and industrial gas needs. This includes various filtering equipment and customized air quality services.

– Our company is always ready to provide explanations. Just share your air quality requirements and we can develop the best system for you.

Contact us

Need help navigating our compressed air dryer offer? We are always ready to put together the solution that best meets your needs.

 

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