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Oil free air compressor

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KWI Series 100% Oil Free Water Lubricated Screw Air Compressor

Variable Frequency Oil Free Water Lubricated Compressor: Air cooling 15kw to 500kw Water cooling 37kw to 500kw
Best Efficiency of Inverter
Completely free from the problem of oil
Oil free type with maximum flow rate
Lowest management & repair cost
Highest efficiency and energy saving
Sealing, lubrication, and chilling with pure water (completely oil free)
Smart air compressor

Description

The undisputed leader of prevent global warming, Energy conservation, and environment protection
The power consumption of air compressor is occupied about 5% among a regional total power consumption. In Particular, due to the power consumption of the compressor takes up 20% ~ 30% of the total power consumption in a plant, cuts down the power consumption of the compressor is the most effective energy saving way. High-efficiency energy-saving single screw compressor is contributing to prevent of global warming by reducing CO2. In addition, due to using no oil, not only the best way to resolve environment and energy conservation but also ISO14000 measures in water pollution and waste management and HACCP hygiene operations. Moreover, it is very safety from heat ignition due to relatively low compression temperature at about 40℃.

 

Single-Screw ---- Ideal compression mechanism
A simple construction and water-seal effect deliver ideal operating efficiency.
The “Single-Screw” pump’s construction use a single screw rotor and two gate rotors, one placed on either side of the screw rotor. This is simple construction transmits pressure to the rotating axle with good balance, and prevents excessive load on the bearings this is one of the reasons for the “Single-Screw” pump’s high efficiency. The water used as a lubricating medium also seals gaps inside the compression chamber. Compressed air is thus kept from leaking, enabling the “Single-Screw” pump to generate sufficient discharge even at low rotating speeds. This reduces both noise and vibration. The cooling effect of the water lubricant also prevent heating from the compression process (the discharge air temperature is about 40℃.), making the compression process more efficient and eliminating the need for a cooling apparatus. This improves both safety and durability significantly. The fusion of our unique compression mechanism and new water - lubricant technology is helping greatly to improve energy in a wide range of fields.

 

Precision processing techniques of high reliability
The center of the rotor has characteristics of SINGLE-SCREW consumption structure that shows high efficiency and stability by utilizing super precision technology of Mitsui Seiki that is also a maker of machine tools.

Technical Parameters
Model KWI-7.5A KWI-11A KWI-15A KWI-18.5A KWI-22A KWI-30A
Working Pressure psig 100 116 145 181 100 116 145 181 100 116 145 181 100 116 145 181 100 116 145 181 100 116 145 181
bar 7 8 10 12.5 7 8 10 12.5 7 8 10 12.5 7 8 10 12.5 7 8 10 12.5 7 8 10 12.5
Air Delivery cfm 38.8 35.3 30.0 24.7 63.6 58.3 53.0 45.9 84.7 77.7 74.2 63.6 109.5 102.4 95.3 81.2 134.2 127.1 113.0 88.3 187.1 176.6 151.8 127.1
m3/min 1.1 1 0.85 0.7 1.8 1.65 1.5 1.3 2.4 2.2 2.1 1.8 3.1 2.9 2.7 2.3 3.8 3.6 3.2 2.5 5.3 5 4.3 3.6
Motor Power kw/hp 7.5/10 11/15 15/20 18.5/25 22/30 30/40
Type of Cooling Air Cooling / Water Cooling
Motor Power (L*W*H)(mm) 1300*800*1300 1300*800*1300 1620*1004*1410 1600*910*1350 1450*1000*1560 1950*1050*1432
Weight(kg) 500 540 650 840 870 980
Output pipe Diameter 3/4" 1" 1" 1" 1" 11/4"

 

Model KWI-37A KWI-45A KWI-55A KWI-75A KWI-90A KWI-110W
Working Pressure psig 100 116 145 181 100 116 145 181 100 116 145 181 100 116 145 100 116 145 100 116 145
bar 7 8 10 12.5 7 8 10 12.5 7 8 10 12.5 7 8 10 7 8 10 7 8 10
Air Delivery cfm 233.0 218.9 201.3 162.4 282.5 271.9 243.6 211.9 370.8 346.0 307.2 257.8 480.2 459.0 409.6 572.0 547.3 494.3 734.4 688.5 582.6
m3/min 6.6 6.2 5.7 4.6 8 7.7 6.9 6 10.5 9.8 8.7 7.3 13.6 13 11.6 16.2 15.5 14 20.8 19.5 16.5
Motor Power kw/hp 37/50 45/60 55/75 75/100 90/120 110/150
Type of Cooling Air Cooling / Water Cooling
Motor Power (L*W*H)(mm) 1700*1100*1630 2150*1300*1590 2200*1400*1540 2400*1450*1740 2550*1400*1605 2700*1550*1750
Weight(kg) 1000 1060 1250 1480 2030 2450
Output pipe Diameter 11/4" 11/2" 2" 2" DN50 DN65

 

Model KWI-132W KWI-160W KWI-200W KWI-250W KWI-280W KWI-315W KWI-400W
Working Pressure psig 100 116 145 100 116 145 100 116 145 100 116 145 100 116 145 100 116 145 100 116 145
bar 7 8 10 7 8 10 7 8 10 7 8 10 7 8 10 7 8 10 7 8 10
Air Delivery cfm 847.7 812.1 706.2 981.6 935.7 829.8 1218.2 1165.2 988.7 1518.3 1412.4 1306.5 1800.8 1765.5 1589.0 1977.4 1942.1 1730.2 2259.8 2471.7 2153.9
m3/min 24 23 20 27.8 26.5 23.5 34.5 33 28 43 40 37 51 50 45 56 55 49 64 70 61
Motor Power kw/hp 132/175 160/200 200/270 250/330 280/375 315/420 400/550
Type of Cooling Air Cooling / Water Cooling
Motor Power (L*W*H)(mm) 2600*1650*1750 3300*2200*2000 3300*2200*2200 3670*2070*2370 4000*2000*2100 4600*2300*2400 4600*2300*2400
Weight(kg) 2850 3750 4100 4750      
Output pipe Diameter DN65 DN65 DN80 DN125 DN150 DN125 DN150

 

Model KWI-450W KWI-500W
Working Pressure psig 100 116 145 100 116 145
bar 7 8 10 7 8 10
Air Delivery cfm 2860.1 2789.5 2471.7 3142.6 3072.0 2718.9
m3/min 81 79 70 89 87 77
Motor Power kw/hp 450/600 500/670
Type of Cooling Air Cooling / Water Cooling
Motor Power (L*W*H)(mm) 5500*2590*2800 5500*2590*2800
Weight(kg)    
Output pipe Diameter DN175 DN200
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