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Low Pressure PM Rotary Screw Air Compressor

A Low Pressure PM Rotary Screw Air Compressor is engineered to deliver compressed air at pressures between 2–5.5 bar (29–80 psi), catering to applications requiring high airflow at lower pressures. Its defining feature is the integration of permanent magnet (PM) motors with variable speed drives (VSD), setting new benchmarks in energy efficiency.​
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Working Principles


PM Motor Integration

At the core of the Low-Pressure PM Rotary Screw Air Compressor is the direct coupling of permanent magnet motors to the compression unit. This design eliminates the transmission losses common with belt or gear-driven systems, allowing the motor to operate at peak efficiency. The PM motor’s inherent high-efficiency rating, paired with the compressor’s optimized rotor profiles, ensures that air is compressed with minimal power input—even at the low pressure ranges the equipment is designed for.


VSD-Driven Demand Responsiveness

The variable speed drive (VSD) is a pivotal component of the working principle, adjusting the motor’s speed in real time to align with the application’s actual airflow needs. When demand drops, the VSD reduces motor speed, avoiding the energy waste that plagues fixed-speed models forced to run at full capacity regardless of requirement. Additionally, the rotors feature an asymmetric tooth design, specifically engineered to enhance compression efficiency in low-pressure scenarios, ensuring maximum airflow without compromising energy performance.


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Low Pressure PM Rotary Screw Air Compressor



Characteristic Advantages


High Energy Efficiency

The combination of permanent magnet motors and VSD delivers exceptional energy savings compared to conventional compressors. By eliminating transmission losses and adapting to demand, it reduces overall energy consumption, aligning with global decarbonization goals and lowering operational costs.


Minimal Maintenance Requirements

With no belts or gears to replace, the compressor minimizes routine maintenance tasks. Its durable design and extended service intervals for key components (such as filters and lubricants) further reduce lifecycle costs and downtime.


Sustainable and Eco-Friendly

Engineered with sustainability in mind, the Low-Pressure PM Rotary Screw Air Compressor supports industrial decarbonization efforts through reduced energy use. The use of high-efficiency materials and optimized processes also minimizes its environmental footprint, making it a responsible choice for green manufacturing.


Reliable Continuous Operation

The precision-engineered rotors and robust PM motor ensure consistent performance even during long hours of operation. Its ability to handle high airflow demands at low pressure without overheating or performance degradation makes it ideal for continuous industrial use.


Low Pressure PM Rotary Screw Air Compressor



Applications


Textile Manufacturing

In textile production, the Low-Pressure PM Rotary Screw Air Compressor provides the necessary low-pressure compressed air for yarn processing and loom operations. Its consistent airflow ensures smooth weaving and yarn handling, preventing disruptions in production.


Cement and Glass Production

For material handling in cement and glass manufacturing, the compressor’s high airflow at low pressure efficiently transports bulk materials without damaging delicate components or consuming excess energy.


Food and Beverage Sector

In food and beverage processing, the compressor supports packaging and grain conveying processes. Its clean operation and energy efficiency ensure that production meets hygiene standards while keeping operational costs in check.



Consistent Low-Pressure Air Delivery

The primary functionality of the Low-Pressure PM Rotary Screw Air Compressor is to generate and supply stable low-pressure compressed air that meets the rigorous demands of high-airflow applications. It maintains steady pressure levels across fluctuating loads, ensuring uninterrupted performance for critical industrial processes.


Dynamic Demand Adaptation

Equipped with VSD technology, the compressor responds instantly to changes in airflow requirements. Whether the application needs a sudden surge or a steady stream of low-pressure air, the system adjusts seamlessly, eliminating idle running and the associated energy losses.


IoT-Enabled Smart Monitoring

Built-in IoT smart monitoring enhances functionality by providing remote access to operational data—including pressure levels, motor performance, and maintenance alerts. This feature enables predictive upkeep, allowing users to identify and address potential issues before they disrupt operations, thus maximizing uptime.


LY-CV series

Working Pressure

Capacity

Power

Bar

Psig

(m3/min)

Cfm

KW

HP

LY-75CV

4.0-5.0

58-73

4.3-14.5

152-512

55

75

LY-100CV

4.0-5.0

58-73

5.8-19.5

205-689

75

100

LY-120CV

4.0-5.0

58-73

7.2-24.2

254-855

90

120

LY-150CV

4.0-5.0

58-73

8.2-27.5

290-971

110

150

LY-175CV

4.0-5.0

58-73

10.2-34.5

360-1218

132

175

LY-215CV

4.0-5.0

58-73

12.6-42.2

445-1490

160

215

LY-270CV

4.0-5.0

58-73

15.7-52.5

554-1854

200

270

LY-300CV

4.0-5.0

58-73

17.3-58

611-2048

220

300

LY-350CV

4.0-5.0

58-73

18.8-63.1

664-2228

250

350

LY-375CV

4.0-5.0

58-73

22.3-74.8

788-2642

280

375

LY-30CV

2.1–3

30–44

1.8–6.5

64–230

22

30

LY-50CV

2.1–3

30–44

3.4–11.6

120–410

37

50

LY-75CV1

2.1–3

30–44

5.1–17.2

180–607

55

75

LY-175CV2

2.1–3

30–44

4.6–15.8

162–558

55

75

LY-100CV1

2.1–3

30–44

7.2–24.2

253–855

75

100

LY-100CV2

2.1–3

30–44

6–20,5

212–724

75

100

LY-120CV1

2.1–3

30–44

8.9–30

314–1059

90

120

LY-120CV2

2.1–3

30–44

7.2.9–24.2

254–855

90

120

LY-150CV1

2.1–3

30–44

10.9–36.5

385–1289

110

150

LY-150CV2

2.1–3

30–44

9.6–32. 4

339–1144

110

150

LY-175CV1

2.1–3

30–44

14.2–47. 6

501–1681

132

175

LY-175CV2

2.1–3

30–44

11.3–37. 9

339–1338

132

175

LY-215CV1

2.1–3

30–44

12.8–42. 8

452–1511

160

215

LY-215CV2

2.1–3

30–44

15.7–52. 7

554–1861

160

215

LY-250CV

2.1–3

30–44

19.1–63. 8

645–2253

185

250

LY-270CV

2.1–3

30–44

21–70. 2

742–2479

200

270

LY-350CV

2.1–3

30–44

27.5–80

972–2830

250

350



FAQ


Which industries benefit most from this compressor?

The Low-Pressure PM Rotary Screw Air Compressor is ideal for industries requiring high airflow at low pressure, including textile manufacturing, cement/glass production, and food/beverage processing. Any operation prioritizing energy efficiency and consistent low-pressure air supply will find significant value in this equipment.


How does the VSD contribute to energy savings?

The variable speed drive (VSD) adjusts the motor speed to match real-time airflow demand, eliminating energy waste from idle running or overcapacity. Unlike fixed-speed models that operate at full power regardless of need, the VSD ensures the compressor only uses the energy required for the task at hand.


Is remote monitoring available for this compressor?

Yes, the compressor is equipped with IoT-enabled smart monitoring that allows remote diagnostics and predictive maintenance. Users can access operational data, receive alerts, and schedule maintenance from anywhere, maximizing uptime and reducing the risk of unexpected failures.


What makes this compressor more sustainable than conventional models?

Its integration of permanent magnet motors and VSD reduces energy consumption, while the elimination of belt/gear transmissions minimizes wear and tear, reducing waste. Additionally, extended maintenance intervals and durable components lower the environmental impact associated with part replacements and disposal.


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