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Scroll Compression Principle

As the orbiting scroll goes from No. 1 to No. 4 position the size of the symmetrical crescent-shaped compression chambers is gradually reduced, compressing the air contained within. This is then discharged through the central exhaust port.

Composition of Oil-free air compressor
  • In BUMA Scroll type air compressor, it has absolutely different compression room from bearing parts so there is a minimum possibility of inflow and outflow of oil in case there is any problem or damage on the air compressor
    There is no gear lubricant because BUMA scroll type air compressor use V-belt driven.
    Specialized composition of BUMA oil-free scroll air compressor realizes 10,000 hours or 4 years maintenance period. It has long life span, low noise and low level of vibration that gives customers a special and additional value.
Features
  • Low Vibration
    There is very low changing torque in Oil-free Scroll Air compressor comparing with Reciprocating Air compressor, so it realizes very low vibration.
    There is another benefit in low changing torque: Strong start ability, which makes start and stop function in a limited movement on the condition of operation.
Compact and Elaborate
Due to low changing torque, no need much inertia force at the point of start-up scroll type air compressor and also, it doesn’t require big size of belt and crankcase which reduces size of air compressor.
Comparing with the size of normal 3.7 kW reciprocating type air compressor, the size of scroll type can be diminished to 64%.
  • Multiple installation in one main body
    Several scroll units which have low vibration and superior start and stop function can be installed simultaneously in one unit of main body so it can be configured for satisfying the requirement of back up function and it can conserve energy in variable situation.
Low Noise
Noise level of scroll type air compressor is much less than reciprocating type air compressor, which make it possible to be installed on/in the noise restricted area.
Class 0 Oil-free Scroll type air compressor
It is totally separated between compression chamber and bearing so there won’t be any oil leakage in case of break-down.
Germany “ Class 0 (ISO 8573-1:2010)” Certificate
CLASS 0 ISO8573-1
Compressed air purity classes for total oil
BDP Series Diesel Engine Running Compressor
Class Concentration of total oil
(liquid, aerosol and vapou mg/㎥)
0 As specified by the equipment user or supplier and more stringent than class 1
1 ≤ 0,01
2 ≤ 0,1
3 ≥ 1
4 ≥ 5
X > 5
Specification
BDP Series Diesel Engine Running Compressor
Item BOC-140E-S40 / BOC-140EB-S40 BOC-165E-S40 BOC-1651E-S40
Power KW 1.5 2.2 3.7 3.7
Flow L/min 157±8 121±6 245±12 209±10 408±20 340±17
Pressure (Max.) Mpa 0.8 1.0 0.8 1.0 0.8 1.0
Suction pressure - Atmospheric Pressure
Ambient Temperature

2~45

Max. pressure ratio - 8 10 8 10 8 10
Outlet temp. K ≦120 ≦140 ≦150 ≦185 ≦180 ≦195
Speed min-¹ 2260 1850 3200 2580 3150 3150
Start up - V type belt
Lubrication 0 Oil free
Cooling System - Air cooling
Dimension
(L×W×H)
343 × 325 × 282/343 × 329 × 282 343 × 356 × 292
Weight kg 14±2 19±2
Model & Specification
BDP Series Diesel Engine Running Compressor
Model Motor Power
kW(HP)
Voltage Operation Control Pressure
MPa
Air Flow
L/min
Air Receiver
L
Outlet
B
Dimensions
(w × d × h)
Weight
kg
Noise Level
(front 1.5m)
BOC-15B 1.5 3P
380V
50Hz
Automatic
Open/Close
Pressure
0.65~0.8 165 35 Rc3/8 545 × 665 × 1065 135 46±3
BOC-22B 2.2 240 135 49±3
BOC-37B 3,7 405 145 49±3
BOC-75B 3.7 × 2 815 - Rc1 720 × 1140 × 1640 375 54±3
BOC-110B 3.7 × 3 1225 435 56±3
BOC-150B 3.7 × 4 1630 510 58±3
BOC-220B 3.7 × 6 2565 - Rc1 1/2 1400 × 1140 × 1640 900 59±3
BOC-300B 3.7 × 8 3420 1050 60±3
1MPa                    
BOC-151B 1.5 3P
380V
50Hz
Automatic
Open/Close
Pressure
0.8~1.0 125 35 Rc 3/8 545 × 665 × 1065 130 46±3
BOC-221B 2.2 205 135 50±3
BOC-371B 3.7 345 151
BOC-751B 3.7 × 2 690 - Rc1 720 × 1140 × 1640 375 53±3
BOC-1101B 3.7 × 3 1035 435 56±3
BOC-1501B 3.7 × 4 13880 520 58±3
BOC-2201B 3.7 × 6 2070 Rc1 1/2 1400 × 1140 × 1640 900 59±3
BOC-3001B 3.7 × 8 2760 1050