 |
 |
| Select if oil-free
compressed air is necessary or normal oil-type compressed
air is permitted. |
 |
 |
Oil-free type: Most
suitable for food, painting and medicine for which oil
is not suitable, various other kinds of applications.
Oil-type: Suitable for air source of general industries
|
 |
 |
*Select model which has min.
control pressure 0.1 
0.2 Mpa higher than your operating pressure. |
|
| Pressure drops depending on
size and length of piping. |
|
|
|
 |
* Air consumption means volume
of air delivery per minute.
** Select model which has free air delivery over 10% larger
than actual air consumption. |
|
About free air
delivery:
It is measured according to JISB8341.
This means discharged air volume at operating pressure
converted into standard intake condition.
Standard intake condition for JISB8341: Compressor draws
air of 20°C, absolute pressure 101.3 kPa (760mmHg),
relative humidity 65%.
Tolerance of air consumption in the inspection method
is as follows;
 Less
than 10kW: ±6.0%
Over
10kW to less than 100kW: ±5.0% |
| |
|
|
 |
|
| kW |
0.2 |
0.4 |
0.75 |
1.5 |
2.2 |
3.3 |
3.7 |
5.5 |
7.5 |
11 |
| PS |
1/4 |
1/2 |
1 |
2 |
3 |
4.5 |
5 |
7.5 |
10 |
15 |
*Conversion chart between IW and PS is
shown above.
* The below graph shows the relationship between air consumption
and compressor output in order to select suitable mode.
Pressure is based on 0.8
1.1 Mpa specifications.
Refer to our catalog for details. |
|
| |
|
 |
|
| Compression
system |
Shape |
Mechanism |
Features |
Reciprocating
|
 |
To compress air in compression
room by changing its space through reciprocating
piston cylinder in cylinder |
Valve at basic compressor,
large torque fluctuation. Large noise & vibration
due to low speed rotation.
But, most inexpensive. |
Screw
|
 |
To
compress air in screw groove of male/female screw
rotors by changing its space. |
Most prevalent oil type
compressor as factory air source, small noise &
vibration. Most efficient middle-sized type. |
Scroll
|
 |
To mesh wraps consisting of involute
curve which are shifted by 180°C each and compress
air in closed space |
No valve needed, small
torque fluctuation. Very low noise vibration. Most
efficient in small-sized compressors.
|
|
|
 |
Confirm if it is motor-driven
or engine-driven (reciprocating type only).
Confirm voltage, phase and Hz of electric source in case
of motor-driven. |
|
Electric source in the catalog
is standard 3-phase 200V.
In case of single-phase 100V is standard.
In case of different voltage, it is made to order. |
|
 |
 |
|
| Before installation, confirm
the local regulation regarding noise generated by compressors. |
|
|
|
 |
| Check if air receiver, air dryer,
filter and transformer are necessary. |
|
|
Example: Calculate the necessary
capacity of air receiver when air receiver exhausts air
of 1m3 for 20 seconds with 1.0MPa
pressure at air receiver and air receiver maintains over
0.9MPa pressure.
Temperature conditions are air 30°C in air receiver
and 20°C atmospheric temperature. |
|
| kgf/cm2 |
1 |
2 |
3 |
4 |
5 |
5.5 |
6 |
7 |
8 |
8.5 |
9 |
10 |
14 |
| MPa |
0.10 |
0.20 |
0.29 |
0.39 |
0.49 |
0.54 |
0.59 |
0.69 |
0.78 |
0.83 |
0.88 |
0.98 |
1.37 |
|
| |
|
| |
