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China EHV Series Air Compressor Factory - PM VSD Screw Compressors for Laser Cutting, High Efficiency & Quality Air Supply
Product Highlight
Purpose-Built High-Pressure Reliability
A dedicated high-pressure air-end with optimized rotor profile minimizes internal leakage, while an 8-bearing design ensures exceptional stability, precision, and long service life—even under continuous high-pressure operation.
Stably Supplying Premium Air Quality
Stainless-steel piping and a high-efficiency aluminum-plate dryer reduce pressure loss, prevent corrosion, and maintain a stable 2–10 °C dew point, delivering clean, dry air with lower energy consumption over the entire lifecycle.
Engineered to Achieve Long-term Efficiency
Advanced inverter and control algorithm provide precise pressure regulation. IE5 oil-cooled permanent-magnet motor delivers outstanding efficiency across a wide speed range (20–110%), with efficiency fluctuation below 4%, ensuring maximum energy savings under variable load conditions.
Heavy-Duty Thermal Stability for Harsh Environments
An oversized cooling system with 25% surplus capacity enables reliable operation at ambient temperatures up to 46 °C, preventing overheating and ensuring stable performance in demanding industrial environments.
Product Structure
High-pressure Dedicated Air-end
- Designed specifically for high-pressure compression, with optimized profile to reduce internal leakage
- Using the world-class Hexagon coordinate measuring instruments, to ensure precision
- Features 8 bearings for stable operation and long service life
High-efficiency Oil-cooled Motor
- Equipped with an IE5 oil-cooled PM motor, IP65 protection rating, adaptable to harsh conditions
- Wide frequency range (20%–110%) with broad high efficiency spectrum and minimal fluctuation (<4%), catering to various load requirements
- Integrated motor air-end structure to reduce transmission loss
- Variable-frequency starting to ensure that the starting current is lower than the rated current, with no power grid impact
Oversized Cooling System
- Over 25% surplus cooling capacity, providing excellent high-temperature resistance
- Can operate reliably in environments with temperatures up to 46℃, ensuring stable and reliable performance
Stainless Steel Piping
- SUS304 material with smooth interior, minimizing pressure drop
- High corrosion resistance, rust-proof, ensuring premium air quality
Electric Control
- Inovance Heavy-duty Inverter: high starting torque, low current, and precise speed control for reliable operation
- Deman Intelligent Control System: advanced algorithms for high-pressure control, precise pressure regulation, and lower power consumption
- High-performance PLC: fast, stable and compatible with mainstream communication protocols for seamless inverter integration
- 7-inch Color Touchscreen: intuitive interface for efficient data visualization and operation
- User-friendly Interface: designed for easy human-machine interaction and equipment monitoring
High-efficiency Aluminum-plate Air Dryer
- 5℃ inlet-outlet temperature difference for pre-cooling, reducing power consumption and preventing secondary condensation
- Designed for hot and humid conditions with R410a refrigerant. Features a quiet, reliable compressor for long-lasting performance
- Consistent Dew Point: high-efficiency heat exchange design with processing surplus for a stable 2–10℃ dew point at the outlet
Technical Parameter
| Model Specification | Drive Power (kW) | Discharge Pressure (MPa) | FAD (m³/min) | External Dimensions (L×W×H) mm | Cooling Method | Piping Connection Diameter | Unit Weight (kg) |
|---|---|---|---|---|---|---|---|
| EHV 11e-13 | 11 | 1.3 | 1.2 | 1680×860×1585 | Oil cooled | Rp 3/4 | 450 |
| EHV 15e-16 | 15 | 1.58 | 1.3 | 1680×860×1585 | Oil cooled | Rp 3/4 | 463 |
| EHV 22e-16 | 22 | 1.58 | 2.1 | 1730×883×1785 | Oil cooled | G1 | 550 |
| HV 11e-13 | 11 | 1.3 | 1.2 | 861×685×950 | Oil cooled | Rp 3/4 | 217 |
| HV 15e-16 | 15 | 1.58 | 1.3 | 861×685×950 | Oil cooled | Rp 3/4 | 230 |
| HV 22e-16 | 22 | 1.58 | 2.1 | 950×767×1150 | Oil cooled | G1 | 300 |
| HV 37e-16 | 37 | 1.6 | 3.6 | 1232×890×1200 | Oil cooled | G1 1/2 | 585 |
Frequently Asked Questions
Q
What makes the EHV/HV series suitable for high-pressure applications?
The EHV/HV series features a purpose-built high-pressure dedicated air-end with an optimized rotor profile that minimizes internal leakage. Combined with an 8-bearing design and world-class Hexagon coordinate measuring precision, it delivers exceptional stability and long service life even under continuous high-pressure operation up to 1.6 MPa.
Q
How does the IE5 oil-cooled motor contribute to energy savings?
The IE5 oil-cooled permanent-magnet motor achieves outstanding efficiency across a wide variable frequency range of 20%–110%. Efficiency fluctuation is kept below 4%, and the integrated motor air-end structure eliminates transmission losses. Variable-frequency starting also ensures starting current stays below the rated level, reducing grid impact and overall energy consumption.
Q
What is the maximum ambient operating temperature for these compressors?
Thanks to the oversized cooling system with over 25% surplus cooling capacity, the EHV/HV series can operate reliably in ambient temperatures up to 46℃. This prevents overheating and maintains stable, consistent performance in demanding industrial environments.
Q
How does the aluminum-plate air dryer ensure consistent air quality?
The high-efficiency aluminum-plate air dryer uses a 5℃ inlet-outlet temperature difference for pre-cooling to prevent secondary condensation and reduce power consumption. Its high-efficiency heat exchange design maintains a stable dew point of 2–10℃ at the outlet, delivering reliably clean and dry compressed air throughout the system's lifecycle.
Q
What is the difference between the EHV and HV model series?
The EHV series (e.g., EHV 11e-13, EHV 15e-16, EHV 22e-16) features larger external dimensions and higher unit weight, indicating an integrated all-in-one cabinet design that includes the air dryer and additional components. The HV series offers a more compact footprint and lighter weight, making it suitable for installations with space constraints while sharing the same core high-pressure technology.
Q
Why is stainless steel piping used instead of standard materials?
SUS304 stainless steel piping provides a smooth interior surface that minimizes pressure drop across the system, improving overall efficiency. Its high corrosion resistance eliminates rust contamination, ensuring that the compressed air remains clean and meets premium air quality standards—especially critical for sensitive industrial processes and pneumatic equipment.