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OEM Energy Saving Air Cooling Screw Compressor Two Stage Direct Driven Screw Air Compressor Manufacturers, Exporters
Product Description
Product Description
The two-stage compression oil injection screw air compressor has a reasonable equal pressure ratio, ultra-small leakage, and ultra-low noise host design. It combines the first-stage compression rotor and the second-stage compression rotor in one casing, and directly drives them respectively through the front gear, so that each stage of the rotor can obtain the best line speed matching the gas production during operation, and at the same time, the reasonable compression ratio can effectively reduce the compression leakage. Therefore, the compression efficiency is much higher than that of single-stage compression.
With the same power, it can have 12%-18% more displacement than single-compression compressors. Compared with single-stage compression, two-stage compression saves 15% power. The force on the rotor and bearing is small, and the diameter of the rotor is large and the speed is low, so the operation is more reliable.
12% - 18%
More Displacement (Same Power)
15%
Power Energy Saving
Low RPM
Large Rotor Diameter & High Reliability
Application Fields
High-efficiency Motor
Feature
IE4 permanent magnet motor / IE4 High-efficiency motor
Advantage
Motor efficiency 97%
Benefit
5% energy-saving
Intelligent Control
Feature
VFD system
Advantage
Constant pressure output to remove pressure fluctuation and off-load, Constant temperature output at 9-~85°C, Low starting current to protect components
Benefit
15% energy-saving
Product Features
Two Stage Air End
Feature
Two-stage compressor air-end
Advantage
Low compression ratio, Low temperature rising, Low air leakage
Benefit
15% energy-saving
Smart Display Screen
Feature
Intelligent control system
Advantage
10 inch monitor to show all the date
Benefit
Simple operation and trouble free
Air Inlet Valve
Feature
High vacuum degree: 700mmHg
Advantage
Large suction area, Low load energy consumption in unloaded operation. Fast check: prevent unloading and shutdown oil injection
Benefit
Cast aluminum to avoid rust and temperature change
Product Pictures
Product Specification
| ETSV- series technical parameters: | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model | ETSV-18A | ETSV-22A | ETSV-30A | ETSV-37A/W | ETSV-45A/W | ETSV-55A/W | ETSV-75A/W | ETSV-90A/W | ETSV-110A/W | ETSV-132A/W | ETSV-160A/W | ETSV-185A/W | ETSV-200A/W | ETSV-220A/W | ETSV-250W | ETSV-280A/W | ETSV-315A/W | ETSV-355W | |
| Model | ETSV-18A | ETSV-22A | ETSV-30A | ETSVV-37A/W | ETSVV-45A/W | ETSVV-55A/W | ETSVV-75A/W | ETSVV-90A/W | ETSVV-110A/W | ETSVV-132A/W | ETSVV-160A/W | ETSVV-185A/W | ETSVV-200A/W | ETSVV-220A/W | ETSVV-250W | ETSVV-280A/W | ETSVV-315A/W | ETSVV-355W | |
| Free air delivery / Discharge air pressure (M3/min / Mpa) | 3.5/0.7 | 4.1/0.7 | 6.5/0.7 | 7.1/0.7 | 9.8/0.7 | 12.8/0.7 | 17.6/0.7 | 21.0/0.7 | 24.5/0.7 | 29.9/0.7 | 34.5/0.7 | 41.0/0.7 | 44.7/0.7 | 48.6/0.7 | 55.0/0.7 | 61.0/0.7 | 69.0/0.7 | 78.0/0.7 | |
| 3.4/0.8 | 4.0/0.8 | 6.4/0.8 | 7.0/0.8 | 9.7/0.8 | 12.4/0.8 | 16.6/0.8 | 19.8/0.8 | 23.6/0.8 | 28.0/0.8 | 15.8/0.8 | 20.0/0.8 | 43.0/0.8 | 46.9/0.8 | 54.0/0.8 | 59.9/0.8 | 67.6/0.8 | 76.0/0.8 | ||
| 3.0/1.0 | 3.4/1.0 | 4.8/1.0 | 6.2/1.0 | 7.8/1.0 | 9.7/1.0 | 12.4/1.0 | 17.9/1.0 | 19.8/1.0 | 23.5/1.0 | 14.2/1.0 | 17.5/1.0 | 38.5/1.0 | 41.0/1.0 | 45.9/1.0 | 51.0/1.0 | 61.0/1.0 | 69.0/1.0 | ||
| 2.4/1.3 | 3.2/1.3 | 4.1/1.3 | 5.5/1.3 | 6.6/1.3 | 8.7/1.3 | 11.1/1.3 | 14.2/1.3 | 17.5/1.3 | 19.8/1.3 | 11.6/1.3 | 14.3/1.3 | 32.9/1.3 | 38.0/1.3 | 40.0/1.3 | 44.9/1.3 | 51.0/1.3 | 58.0/1.3 | ||
| Air supply temperature | ≤ ambient temperature +8~15ºC | ||||||||||||||||||
| Motor | Power (kw/hp) | 18.5/25 | 22/30 | 30/40 | 37/50 | 45/60 | 55/75 | 75/100 | 90/120 | 110/150 | 132/175 | 160/215 | 185/250 | 200/270 | 220/294 | 250/355 | 280/375 | 315/420 | 355/475 |
| Start method | Y-△ Starter / VSD start | ||||||||||||||||||
| Voltage (v/hz) | 380V 3PH 50HZ (380V-3PH-60HZ/ 460V- 3PH- 60HZ/ 220V- 3PH-60HZ/ 400V-3PH-50HZ/6000V-3PH-50HZ/other voltagesd can be customized ) | ||||||||||||||||||
| Drive method | Coupling transmission | ||||||||||||||||||
| Oil content (PPM) | ≤3 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
| Connector inch | 1" | 1" | 1" | 1 1/4" | 2" | 2" | 2" | DN65 | DN65 | DN65 | DN80 | DN100 | DN100 | DN100 | DN100 | DN100 | DN125 | DN125 | |
| Dimension | length mm | 1500 | 1500 | 1800 | 1800 | 2100 | 2100 | 2200 | 2700 | 2700 | 2800 | 2800 | 3200 | 3200 | 3200 | 3550 | 3550 | 3750 | 3750 |
| width mm | 900 | 900 | 1100 | 1100 | 1260 | 1260 | 1260 | 1600 | 1600 | 1700 | 1800 | 2200 | 2200 | 2200 | 2300 | 2300 | 2400 | 2400 | |
| height mm | 1150 | 1150 | 1350 | 1350 | 1600 | 1600 | 1600 | 1950 | 1950 | 1900 | 1900 | 2300 | 2300 | 2300 | 2350 | 2350 | 2350 | 2350 | |
| Weight (kg) | 680 | 730 | 980 | 1080 | 1628 | 1700 | 2256 | 2280 | 3300 | 3750 | 3770 | 3990 | 4890 | 5500 | 6000 | 6500 | 7000 | 7500 | |
| Weight (kg) | 665 | 700 | 950 | 1000 | 1590 | 1650 | 2200 | 2230 | 3200 | 3300 | 3600 | 3800 | 4700 | 5300 | 5850 | 6340 | 6850 | 6300 | |
Air Compressor Installation Processing
1 Air compressor
2 Valve
3 Air tank
4 Filter
5 Air dryer
6 Filter
7 Filter
8 Filter
Production Line
Packing & Loading
Frequently Asked Questions (FAQ)
Q1: What makes a two-stage compression screw air compressor more energy-efficient than a single-stage unit?
By combining the first and second-stage compression rotors in one casing driven at optimal line speeds via front gears, two-stage compression achieves an equal pressure ratio, lower temperature rise, and significantly reduced internal leakage. At the same power rating, it generates 12%-18% more displacement and delivers up to 15% overall energy savings.
Q2: How does the IE4 motor contribute to cost and power savings?
The unit integrates an IE4 permanent magnet or high-efficiency motor reaching 97% operational efficiency. This high conversion rate minimizes thermal losses, yielding an extra 5% direct energy saving over standard motors during sustained industrial use.
Q3: What are the primary benefits of the VFD intelligent control system?
The VFD system maintains constant discharge pressure, eradicating wasteful off-load cycles and pressure fluctuations. It also controls operating temperature within 9-~85°C, utilizes low starting current to extend component life, and provides an additional 15% energy saving.
Q4: Why is the air inlet valve made of cast aluminum?
The cast aluminum inlet valve prevents rust formation and resists performance degradation caused by extreme temperature variations. With a 700mmHg high vacuum capacity and fast check mechanism, it reduces unloaded power draw and eliminates oil injection during shutdowns.
Q5: What is the recommended installation sequence for this air compressor setup?
The recommended operational sequence is: (1) Air compressor → (2) Valve → (3) Air tank → (4) Pre-filter → (5) Air dryer → (6-8) Multi-stage fine filters. This ensures purified, moisture-free, and oil-controlled compressed air delivery.
Q6: Can custom voltage configurations be accommodated for global industrial setups?
Yes. While the standard specification is 380V/3PH/50Hz, the system can be configured for 220V, 380V, 400V, 460V, or 6000V across both 50Hz and 60Hz grids, along with specialized customized voltages.
