- The compressing efficiency is drastically enhanced by the adoption of the compressor dedicatedly developed for each model.
- Installation of the inverter realizes total energy saving.
- There is no waste because air of required pressure is taken only for necessary volume with minimum power.
- Although small, the direct-couple driving with the motor increases the air volume and reduces the maintenance work.
| Model | ZV22AS4i-R | |||
| Items | Unit | |||
| Power frequency | Hz | 50 / 60 | ||
| Power supply voltage | V | 200 / 220 / 380 / 400 /415 / 440 | ||
| Free air delivery (0.7MPa) | m3 / min | 3.8(4.5)* | ||
| Delivered air pressure | MPa | 0.7 | ||
| Delivered air pressure | MPa | 0.54 to 0.93 | ||
| Presure control method | Constant pressure control by inverter | |||
| Intake air pressure & temperature | Atmospheric pressure (0 to 40°C) | |||
| Main motor power | kW | 22 | ||
| Motor type | Squirrel-cage Three phase induction motor : totally enclosed external fan | |||
| Starter | Inverter | |||
| Drive system | Direct coupled motor | |||
| Cooling system | Air cooled | |||
| Fan motor power | kW | 0.9 (Inverter Control) | ||
| Oil filling quantity |
 |
15 | ||
| Cooling water amount |
/ min |
- | ||
| Dryer | Air dew point at outlet | °C | 10 (under increased pressure) | |
| Refrigerant | R·407C | |||
| Discharge pipe diameter | R | 1 | ||
| Dimension,L×W×H (body) | mm | 1280 x 750 x 1490 | ||
| Total mass (dry)[without dryer] | kg | 590[460] | ||
| Noise level [OP1.5m] | dB·A | 54 | ||
| Dimension,LxWxH (Without dryer) | mm | 1160 x 750 x 1490 | ||
Note: If you want to know the 0.5MPa specifications, please ask us.
*1: The figure in ( ) is the discharge air volume of the 0.5MPa specifications.
| Structural comparison of the permanent magnet motor and the induction motor | |
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By installing the latest IPM motor (internal permanent magnet motor) which contains a permanent magnet in the latest rotor, the compressor is made smaller and the rotation is made faster. If compared with conventional induction motors, the IPM motor does not cause electricity loss or slipping of the rotor, thus drastically enhances the motor efficiency. Combined with Mitsui Seiki's advanced inverter, the total efficiency also overrides that of single induction motors. Heat generation is reduced, leading to further energy saving. Also, the motor direct-coupled driving system eliminates the loss of power, improves the engagement and the machining accuracy of the compressor's main parts, and achieves the efficiency which is much higher than conventional machines. |
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