Research & Development
Myung-Chi Machinery Co., Ltd. is continuously developing its competitiveness through a persistent research and development.
R&D /Core Technology
- Air Bearing
High speed permanent magnet synchronous motor at its highest efficiency(PMSM)
PM motor of MCB is optimized for high speed rotation, which provides high efficiency of 98% by minimizing the high frequency loss.
High efficiency over the entire
operating range with permanent magnets
Electric motor optimized for maintaining
high speed rotation
Rotating up to 60,000 RPM
Wide range of flow control
by the inverter control
Low noise below 85d / Oil free
Small heat dissipation structure compared
to the output capacity
Air Bearing applied
No power loss due to direct drive
Optimized design for
high speed rotation
|Output||Rotation Speed||Number of Poles||Insulation rating||Cooling system|
|30~300Hp||15,000~68,000rpm||2||H||Air cooling / water cooling (Different by models)|
Non-contact bearings that utilize fluid dynamic pressure that occurs automatically
between motor and foil rotating at a high speed, provide a structure with no friction
at all during the operation, which is developed with our unique technology.
- Air foil
- A non-contact bearing, which supports the load of the rotating body by using a force of an air around the shaft rotating at a high speed, compressed by the wedge effect.
The air bearing type of mcb-Series is non-lube and non-contact, which does not use a lubrication oil, while not causing the malfunction and making the maintenance convenient due to the simple system structure. It maintains the highest efficiency by minimizing the power loss and provides a stable and long life with non-vibratory and noiseless environmentally friendly air bearings.
|Air foil Bearing||Not used||Semi-permanent||None||20||Simple||Small device, ACM|
|TilTing Pad Bearing||In use||Semi-permanent||Check once every 5 years||1||Complicated oil system||Industrial device|
|Ball Bearing||In use||Semi-permanent||Replace after a certain period of operation||1||Aviation engine, Small device|
Impellers of mcb Series, manufactured with aerodynamic system technology,
deliver highest durability due to a sophisticated manufacture process.
Optimal design with a precision processing technology
Forged aluminum alloys, suitable for high speed rotation.
Minimized tolerance range with the 5-axis machining.
Verified structural stability of the impeller
by the spin test at rotational speed of 120%.
Eliminates unnecessary energy waste by managing the rotation speed
of the PMSM to control the flow rate requested by the customer.
- Wide operating range of 45~100%
- Soft start at the initial start-up
- Energy savings when load changes
- Quick load response
|Output||Efficiency||Switching frequency||Output frequency||Voltage||Cooling method|
|30kW ~ 300kW||96 ~ 98%||8 ~ 12kHz||800 ~ 1,200Hz||300 ~ 500V||Air cooling / water cooling (Different by models)|
Provides optimized control system for an automated operation.
PLC applied to a Turbo Blower,
Wide range of operation is available
Wide range of operation methods,
such as intermittent and sensor interlocking operations
Easy to operate (Remote, Local,
and other things are easy to operate)
Setting the interlock of the Turbo Blower
Device protection effect
Alarm and Sub Bov before the occurrence of the surge to prevent it
Alarm in case of problem in temperature, rotation number, and etc.,
through a constant monitoring.
Communication availability with the upper CCR
Modbus TCP/485, H/W communication is available
Protection of the device with the dual system
SMPC dual system is applied
Understanding the performance curves
of the TURBO BLOWER
The upper and lower limits of pressure/flow rate are applied to each model
Able to operate within the surge point and the overheat line
of the performance map
Inhalation temperature; affected by the humidity
Change in flow rate at the change of discharge pressure.
(If the pressure rises, the flow rate decreases; inversely proportional)
Surge is where the discharging air flows backward, causing the noise/vibration,
while pressure and flow rate is fluctuating rapidly.
TURBO BLOWER Operation Mode
- Constant flow mode : a control method to maintain a certain value of the flow rate
- Static pressure : a control method where a certain pressure is divided by a percentage.
- RPM mode : a control method where a certain rotation number is divided by the percentage.
- Constant current mode : a control method where a rated current of each model is divided
by a percentage.