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Home >air compressor>Kobelco air compressor>Kobelco air compressor |
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Kobelco's Development Philosophy |
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New product that retains customers' trust.
It can be created from revolutionary spirit and unsparing injection of supreme level of updated technology and with consideration given to the world's ecology.
We pursue true service with heartfelt sincerity. |
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Great trust backed up by total reassurance. |
New revolutionary concept in products,
sales, and services. |
Further development of distinguished technology |
Least impact on the environment |
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With sincerity |
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With serious attention to our customers' needs, with quick responsive serviceWith Kobelco's corporate message "Heart to Heart" in manufacturing products |
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Kobelco screw compressors are produced at ISO9001 and ISO14001 certified |
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Discharge air volume 2.3-12.3m³/min
15-75kW Class
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The AG and SG series boasts the same basic functions
as the top-of-the-line VX and VS series.
Kobelion's standard screw compressor series changes the concept of simplicity. | |
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Discharge air volume
3.9-12.4m³/min(0.69MPa)
4.8-15.1m³/min (0.39MPa)
22-75kW Class
Other compressor with inverter
( Kobelion-VSMULTI / Emeraude-VF / Emeraude-VE / Emeraude-ALE-V )
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Wide Range Control Focus of Energy Saving shifts from "Suppression" to "Effective use" |
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By direct couple IPM high-speed motor to the compressor. |
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A Kobelion unit can replace a conventional unit which has larger motor output. |
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Higher efficiency pursued to maximize Wide-Range Control advantages. |
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Energy-saving performance under low load condition is uncompromisingly pursued. Expansion of the inverter control range to
10-125%, from 20-100% of a conventional unit, accomplishes optimum energy-saving at any operating conditions. |
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New type electronic monitor included as standard |
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-Operation record, weekly timer, daily report management, maintenance information,
and operation condition displayed as graphs
Two-unit alternate operation without a group control panel
Two-unit alternate operation of Kobelion models can be done by simple wiring. Unlike conventional units, no specifically designed panel for two-unit alternate operation is needed. First-Started unit or Next-Started unit can be selected from the monitor. |
New type electronic monitor | |
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Built-in overhang direct-coupling construction (IPM high-speed motor direct-coupling structure) |
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Structure to minimize energy loss
Screw unit directly coupled with high-speed permanent magnet motor
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Kobelion is designed with special emphasis on noise reduction. For reduction of low noise, sound quality as well as operating noise level are improved by thorough review of all spots that might be source of noise. | | |
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Inverter fan (Air Cooling type only) |
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 Cooling fan is inverter-controlled type in Kobelion.
Energy loss of cooling fan in conventional units have been solved.
Wasteful energy consumption is minimized by the control of fan speed in proportion to the discharge air temperature. Also, durability is improved by stabilizing the temperature inside the compressor unit.
Cooling fan motor: inverter controlled (load change characteristics) VS410AD
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Simple Structure with Minimum Number of Parts |
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-Structure of No motor bearing
-Structure of No suction throttling valve
-Structure of No mechanical seal |
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Low maintenance |
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-Recommended interval of overhaul:Every 6 years (on a 6,000-hr/year operation basis)
-Dust filter (Air cooled models only) Surface area enlarged two times larger. |
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Complete protection of electric equipment |
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-Built-in DC reactor
DC reactor for removing higher harmonic is built in the inverter panel.
-Momentary interruption / power outage protection with automatic reset ... 0.1 to 20 sec
-Surge killer against 12,000-V lightning and Noise filter are built in. |
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Environment Suitability |
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-New type refrigerant
Kobelion built-in dryers are all furnished with new type refrigerant (R407C) with zero ozone-destruction-coefficient.
-Improved efficiency of oil separator element
Oil separation efficiency improves to 0.002cc/m3 at 0.69 MPa from 0.005cc/m3 of a conventional unit.
-Equipped with Water-Removal function (Patent pending) |
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Discharge air volume
19.0-26.2m3/min
(0.69-0.59MPa)
110-150kW Class
Other compressor with inverter
( Kobelion-VX/VS / Emeraude-VF / Emeraude-VE / Emeraude-ALE-V )
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FE (Emeraude-FE)
Discharge air volume
2.05-7.7m³/min(0.69MPa)
2.0-6.3m³/min(0.88MPa)
15-55kWClass
VF (Emeraude-VF)
Discharge air volume 5.4-6.4m³/min
37kWClass
Other compressor with inverter
( Kobelion-VX/VS / Kobelion-VSMULTI / Emeraude-VE / Emeraude-ALE-V )
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The advanced Emeraude-FE series pursues more severe efficiency.
This series has achieved energy saving, reduction of running costs, and improvement of reliability. |
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Performance of this series has gone up 5 to 10% than that of previous models. This has been achieved by adopting a two-stage compressor with good Specific Power Consumption (kW/m3/min), improving the capability of the cooling system, and reducing the pressure loss of the internal piping. |
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Providing the ultimate in clean air |
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The oil-free design introduces absolutely no oil to the rotor chamber in process. Stainless steel shaft-seal rings are used to prevent the generation of carbon dust, and Kobelco's patented twin atmospheric shaft vents prevent lubricating oil from contaminating the compression chamber even during extended unload operation.
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Two-stage compression design (standard equipment for all models) |
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A two-stage compressor is adopted to achieve energy saving, reduction of running costs, and improvement of reliability. The efficiency of this series has gone up 9~34% than that of single-stage oil-free compressors.
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Low noise |
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The noise of exhaust hot air have been reduced by using inverter sirocco fan. At unload or low ambient temperature operation, the inverter sirocco fan operate at lower Rpm and reduced the noise level. The improved design suction duct also help to achieve lower suction noise. |
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Reduction in noise of Air-Cooled models
Reduction of pulse noise
A perforated panel silencer is adopted to reduce high-frequency noise of more than 1KHz, and reduce to approx. 15dB on average with less irritating noise. |
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Advanced "Energy-Saving Logic"* functions now standard *(patent pending) |
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Advanced "Energy-Saving Logic"* functions now standard *(patent pending) |
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Minimized Capacity control -Pressure control range: the Emeraude series features the most efficient control system with a narrower pressure control range of 0.05MPa compared to the conventional pressure control range of 0.1MPa.
-With the introduction of "Energy-Saving Logic," unload operation is forcibly performed at every 23seconds of capacity control cycle.By reducing the unload pressure,excessive load operation is eliminated. Through the combination of load-unload switching and timer control, power consumption has been reduced even below previous Kobelco models, producing an economical two-stage high-efficiency compressor, while also reducing running costs. |
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Inverter cooling fan |
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In the Emeraude-FE series, the cooling fan is also controlled by the inverter to further save energy.
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-The Rpm of the inverter fan is proportional to ambient temperature and load ratio. So that power saving can be achieved with low ambient temperature and low load operation.
-Temperature inside the compressor unit can be so stable that the durability is improved. |
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New type electronic monitor with liquid crystal display |
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Alternate operation function of two units -Graph display of operating history, weekly timer, daily report management, maintenance information, and operation status. |
New Type Electronic Monitor | |
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Improving on durability for ambient temperature. |
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A large cooling fan, fan exhaust cooling system, and the top horizontal position of the cooler are adopted. -Cooling capability has been improved at 60% than the one of the previous models.
-Possible to use & operate the compressor under ambient temperature of 45ºC. | |
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Long-life design |
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Totally Enclosed Fan cooled moter is selected to reduce motor coil temperature and motor bearing temperature, and that leads to a significant improvement on reliability eventually. A measuring function of motor coil tempereture has been installed for standard equipment. |
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High-performance intake filter |
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A two-stage separation system Åicentrifugal separation and filtering separation with high dust collection efficiencyÅj is adopted as a counter measure against dusty environments. | |
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Improved protection for electric parts |
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-Momentary interruption protection:Within 0.5 sec
-Automatic reset from power failure : 0.5 to 20 sec
-Built-in 12,000-V thunder surge killer and noise filter | |
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Environmental Friendly |
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Using new type of refrigerant
R407C of no ozone destruction coefficient is used for all dryers.
Using new intake valves
To prevent oil contamination, air pressure is used for capacity control, instead of oil pressure. | |
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Achieved better performance than conventional units by
advanced technologies of Motor & Inverter |
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A state-of-the-art Interior Permanent Magnet (IPM) motor is adopted as the power source to drive the unit. In combination with its uniquely developed inverter, Kobelco prides itself on delivering a new energy-saving inverter compressor, which boasts the utmost in efficiency and reliability. |
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Equipped with the world’s first IPM motor. |
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IPM motor achieves higher efficiency than either general-purpose induction motors or high-efficiency induction motors.
Specifically designed inverter couple with IPM motor can make a power-saving effect that no-conventional inverter can make.
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More stable features supporting Kobelco inverter |
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Built-in Higher harmonic reactor as standard
It reduces harmonics generated by the inverter.
* Complies with harmonic suppression guidelines by the Japan Electrical Manufacturer’s Association (JEMA)
Stable operation under adverse condition 
Soft Start by KOBELCO Inverter
It reduces peak current when starting-up, thus ensuring smooth start-up and reducing power supply equipment cost
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Elaborate Control with Kobelco Inverter (Variable Speed Control) |
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Required air volume is produced for optimum operating pattern, thus minimizing energy loss. |
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No matter what the load condition, Kobelco inverter control achieves ideal energy savings without unnecessary motor rotation. Instantly responding to any changes in demand pressure, pressure fluctuation could be minimized within ±0.01 MPa, thus supplying the required air volume with precisely controlled operating energy.
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Kobelco’s Wide Range Control provides maximum air volume at your required pressure.Remarkable expansion has been achieved in range control and low-pressure operation range. Realizing the biggest air volume under low-pressure operation has met energy-saving needs and provided abundant merit for users.
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ALE
Discharge Pressure
6.8-48.0m³/min(0.69MPa)
5.4-43.6m³/min(0.93MPa)
45-290kWClass
ALE V type
Discharge Pressure 10.2-43.6m3/min
65-250kWClass
Other compressor with inverter
( Kobelion-VX/VS Kobelion-VSMULTI Emeraude-VF Emeraude-VE )
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In Performance, in Efficiency Always First in its Class. |
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New high-efficiency screw design enhances efficiency. |
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Completely resigned 2-stage compressor air end and reduced pressure loss within the package result in an 8% increase in efficiency.
The water-cooled intercooler and aftercooler also feature the industry,s first plate-fin design, thus reducing air pressure loss to one-fifth. |
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Providing the ultimate in clean air |
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The oil-free design introduces absolutely no oil to the rotor chamber in process. Stainless steel shaft-seal rings are used to prevent the generation of carbon dust, and Kobelco's patented twin atmospheric shaft vents prevent lubricating oil from contaminating the compression chamber even during extended unload operation.
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ALE unit for ultimate maintenance savings |
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Enhanced rigidity, lower vibration Unified body construction
Highest level of seal quality Oil system uses both G-threads and O-ring joints
Water-in-tube design simplifies cooler cleaning Water-cooled gas coolers feature the industry's first plate-fin water-in-tube structure.
Improved endurance Totally enclosed fan-cooled motors are installed as standard equipment.
More reliable drainage Forced drainage is accomplished via timer and solenoid valve.
Enhanced bearing durability Improved lubricant filters lengthen bearing life.
Complete electrical protection Reserve power circuits are provided with their own dedicated breaker, and control circuitry is equipped with circuit protectors.
No need for oil mist plumbing An exhaust cleaner is featured as standard equipment.
Extended maintenance cycle -Recommended general overhaul schedules
1st-stage:Every 9 years 2nd-stage:Every 6 years
-Capacity control Maintenance :Every 3 years
-Annual maintenance:Changes of oil and oil filters only
Water-in-tube cooler design facilitates elimination of scaling
Cooler cleaning schedules can be extendedeven longer with the addition of an optional water conditioning unit
Example of maintenance costs
(Based on overhaul costs of 100 for previous models)
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New Type Electronic Monitor with LCD Display |
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Alternate operation of two units
New electronic monitor
Graphic display of operating history, weekly timer, daily report management, maintenance information, operation status |
New Type Electronic Monitor | |
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Advanced "Energy-Saving Logic"* functions now standard *(patented) |
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Minimized Capacity control -Pressure control range: The Emeraude series features the most efficient control system with a narrower pressure control range of 0.05MPa compared to the conventional pressure control range of 0.1MPa.
-With the introduction of "Energy-Saving Logic," unload operation is forcibly performed at every 23seconds of capacity control cycle.By reducing the unload pressure,excessive load operation is eliminated. Through the combination of load-unload switching and timer control, power consumption has been reduced even below previous Kobelco models, producing an economical two-stage high-efficiency compressor, while also reducing running costs.
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Conventional Capacity Control |
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New Type Capacity Control |
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Delivers high performance without influence from installation environments and unpredictable variables |
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Operation is possible even in ambient temperature conditions up to 45C°.
The totally enclosed fan-cooled motor is designed for high resistance to external dust and moisture.
The controller is built to IP65 specifications for protection against unanticipated water leakages.
The air end is designed with power to spare, for operation up to 1.03 MPa.
Full range of functions to protect electronic components, including -Control circuit is equipped with an insulated transformer,so that primary surge
voltage shall not be transferred to the secondary circuit.
In addition, a noise filter is installed to protect the controller unit.
-Momentary interruption protection:Within 0.5sec
-Automatic reset from power failure:0.5 to 20sec
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Reduction in noise of Air-Cooled models |
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Reduction of pulse noise A perforated panel silencer is adopted to reduce high-frequency noise of more than 1KHz, and reduce to approx. 15dB on average with less irritating noise. Reduction in noise of ventilation fan wind
A louver is attached to the suction vent of the cooling air to reduce wind noise.
Reduction in noise of ventilation fan wind A louver is attached to the suction vent of the cooling air to reduce wind noise. |
Principle of perforated panel silencer  | |
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Achieved better performance than conventional units by
advanced technologies of Motor & Inverter
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A state-of-the-art Interior Permanent Magnet (IPM) motor is adopted as the power source to drive the unit. In combination with its uniquely developed inverter, Kobelco prides itself on delivering a new energy-saving inverter compressor, which boasts the utmost in efficiency and reliability. |
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Equipped with the world’s first IPM motor. |
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IPM motor achieves higher efficiency than either general-purpose induction motors or high-efficiency induction motors.
Specifically designed inverter couple with IPM motor can make a power-saving effect that no-conventional inverter can make.
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More stable features supporting Kobelco inverter |
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Built-in Higher harmonic reactor as standard It reduces harmonics generated by the inverter.
* Complies with harmonic suppression guidelines by
the Japan Electrical Manufacturer’s Association (JEMA)
Stable operation under adverse condition |
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Soft Start by KOBELCO Inverter It reduces peak current when starting-up, thus ensuring smooth start-up and reducing power supply equipment cost
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Elaborate Control with Kobelco Inverter (Variable Speed Control) |
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Required air volume is produced for optimum
operating pattern, thus minimizing energy loss. No matter what the load condition, Kobelco inverter control achieves ideal energy savings without unnecessary motor rotation. Instantly responding to any changes in demand pressure, pressure fluctuation could be minimized within ±0.01 MPa, thus supplying the required air volume with precisely controlled operating energy.
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Capacity control of “Energy-Saving Logic,”
”Pressure Stabilizing Control,” and conventional control |
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Inverter control  |
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Capacity control by Variable Speed Control |
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Power consumption of Energy-Saving Logic and Kobelco inverter  |
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Energy-saving effect (8,000-hour operation/year Electricity cost:¥15/kWh)  |
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Energy-saving operation is precisely controlled by new feature “Line Pressure Control” |
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Discharge air volume 48.0-121.7m³/min
270-640kWClass
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Ideal Turbo Compressor
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High efficiency |
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Thanks to the most advanced aerodynamics technology by KOBELCO, new titanium impeller has been developed. lt achieves 5% better efficiency than conventional model and equivalent to the 3 stage machines by 2 stage. |
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Impeller |
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Features ITCS for
energy-saving performance |
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The built-in ITCS computer monitors unit operation, controlling capacity,while its self-diagnosis function helps prevent unexpected down time. | |
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Easy maintenance |
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Superior capacity control valve
No instrument air is required.
Automatic drain valve
Highly reliable electric type drain valve is equipped as
a standard.
Built in type air coolers
Simple one-pass type plate fin coolers are equipped.
Water flows in tube side for easy cleaning. |
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Factory |
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Intake filters for cooling air and the air-intake port to the airend have been enlarged. Enhanced resistance to dusty environments has also been provided by introducing a two-stage centrifugal dust-removal process. 
