Oil-free screw compressor 2-stage DSP-NEXTⅢ series 132~240kW Class air-cooled inverter machine
Fuji Electrode Industry Co., Ltd.
About This Product
■Stainless steel fine rotor
The rotor, which is processed with high-precision tooth surface grinding, is made of special stainless steel with excellent corrosion resistance and durability. Furthermore, to reduce internal leakage, we have applied a mirror finish that takes into account thermal expansion during operation to ensure optimal clearance.
■High performance rotor profile
The rotor, which is exposed to discharge temperatures of over 300℃ in a single-stage machine and over 200℃ in a two-stage machine, undergoes significant thermal expansion. Hitachi's unique three-dimensional correction technology is applied to anticipate this thermal expansion and ensure the optimal clearance during operation.
■High performance solid lubricant coating
The rotor is coated with a solid lubricant coating to further reduce the gap between metals and improve performance. This solid lubricant film has sufficient performance even in harsh environments exceeding 300℃, and Hitachi's unique technology is applied.
■Shaft seal to prevent oil leakage
Visco Seal, designed by Hitachi for oil-free screw compressors, actively pumps oil back out with internal spiral grooves. A combination of air seal and visco seal prevents oil from entering the compression chamber.
■Bearings, timing gears
The bearings are dedicated ball bearings and roller bearings, and jet lubrication is used for lubrication. In addition, the precisely finished timing gear ensures optimal rotor clearance.
■ Constant pressure control supplies the required amount of air at the required pressure.
Highly accurate constant pressure control with a pressure fluctuation range of ±0.01MPa or less is possible, so air at the optimum pressure required for the machine in use can be efficiently supplied. Additionally, the set pressure can be set in 0.01MPa increments, resulting in significant energy savings.
■Achieve energy savings with variable speed + unique intermediate stage air release control
During unloading (no load), in addition to releasing air from the high-pressure stage, air is also released from the intermediate stage to reduce power during unloading and ensure stable shaft seal reliability. Additionally, since there is no unloader, maintenance of the unloader (suction throttle valve) is not required.
■Peak cut function standard equipment
By turning on the peak cut function, the maximum rotation speed of the compressor will be lower than the set value, making it possible to keep the power consumption of the compressor low.
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Product
Oil-free screw compressor 2-stage DSP-NEXTⅢ series 132~240kW Class air-cooled inverter machine
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Handling Company
Fuji Electrode Industry Co., Ltd.
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Categories
1 Models of Oil-free screw compressor 2-stage DSP-NEXTⅢ series 132~240kW Class air-cooled inverter machine
| Product Image | Part Number | Price (excluding tax) | Approximate mass (kg) | Discharge air temperature (℃) | Discharge air volume (㎥/min) | Discharge pipe diameter (B) | Discharge pressure (MPa) | Drive method | External dimensions (width x depth x height) (mm) | Lubricating oil filling amount (L) | Main motor model | Noise level (front 1.5m) (dB (A) ) | Nominal output (kW) | Power supply voltage (50/60Hz) (V) | Starting method | Suction pressure/temperature (℃) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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DSP-160VA5N3 |
Available upon quote | Compressor 3,960, inverter panel 380 | Atmospheric temperature +15 or less | 27.5, 24.8, 22.5 | 2・1/2 (flange) | 0.75, 0.93, 1.0 | Motor direct connection + gear speed increase | Compressor 2,900×1,700×1,925, Inverter panel 690×1,175×1,760 | 50 (unfilled) | 4-pole fully enclosed external fan flange motor | 7475 | 160 | 400/440 | Inverter | Atmospheric pressure/0~45 |
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