RAETTS AIR BEARING CORE BLOWER

RAETTS air bearing core blower(7.5-185kW,0.4-1bar,suitable for stable running working conditions)

RAETTS air bearing core blower adopts aviation turbine technology, since there is no physical friction between the impeller and the shaft, so there is no need to do maintenance for a long period, and the service life can reach semi-permanent. The core components are air suspension bearings, permanent magnet ultra-high-speed motors, and high-precision aviation-grade impellers; therefore, RAETTS air bearing blower/compressor has the characteristics of high efficiency, low noise, and low energy consumption. They are the best choice for transforming Roots blowers.

The power range of RAETTS air bearing core blower main unit is 7.5-185kW, and the pressure range is 0.4-1bar. The following are the specific model specifications:

Model

EXPL10

EXPL20

EXPL30

EXPL50

EXPL75

EXPL100

EXPL125

EXPL150

EXPL200

EXPL250

Power

100

125

150

200

250

7.5

110

150

185

WORK PRINCIPLE

RAETTS air suspension bearing blower is a kind of centrifugal blower in which the air will generate a dynamic pressure effect between the rotor and the foil bearing surface under the high-speed rotation of the blower rotor, forming a high-pressure air film to float the rotor. Since the air bearing blower is adopting oil-free passive air suspension bearing, there is no oil lubrication required.The structure is simple and precise. RAETTS air bearing turbo blower is a product extended from the technology of the aircraft turbine engine. Its main core technologies are air suspension bearing technology, high-speed permanent magnet synchronous motor and its control technology. The air suspension bearing uses air as the working medium, the elastic flat foil (top foil) as the supporting surface, and the elastic wave foil (wave foil) as the supporting member.

Core technology

Ultra-efficient permanent magnet high-speed motor technology

RAETTS airfoil bearing turbo blower is a kind of centrifugal blower in which the air will generate a dynamic pressure effect between the rotor and the foil bearing surface under the high-speed rotation of the blower rotor, forming a high-pressure air film to float the rotor. Since the air bearing blower is adopting oil-free passive air suspension bearing, there is no oil lubrication required.The structure is simple and precise.
RAETTS air bearing turbo blower is a product extended from the technology of the aircraft turbine engine. Its main core technologies are air suspension bearing technology, high-speed permanent magnet synchronous motor and its control technology. The air suspension bearing uses air as the working medium, the elastic flat foil (top foil) as the supporting surface, and the elastic wave foil (wave foil) as the supporting member.

Air suspension bearing technology

100% oil-free suspension bearing, no mechanical friction, and the service life can reach semi-permanent. No mechanical noise, no mechanical vibration, just conveying air. It has been widely used in industrial machinery since 2000. It has a simple structure.Compared with oil-lubricated bearings, it can run stably at high temperatures. It has better suspension capabilities in permanent magnet high-speed motors, and does not require complex sensor systems.

Aviation aluminum alloy impeller

RAETTS air bearing turbo blower adopts high-strength aviation aluminum alloy impeller to facilitate high-speed operation in air suspension bearings. The design precision can reach 0.001mm to ensure operating efficiency. The impeller surface adopts hard anode and other treatment methods,which can maintain high-efficiency operation even in harsh environments.

The world's original motor cooling technology

The motor of RAETTS air bearing blower adopts double-stages cooling structure system,and the cooling effect is more stable.The first stage is air-cooled inside the motor, and second stage is effectively cooled for air bearing assembly of the motor.This double-stages cooling system structure is so powerful that it does not require additional cooling equipment (such as externally connected forced cooling fans, etc.) in our motors.

Two-stage compression technology

When the pressure is below 1.2kg, our air bearing blower adopts the single-stage air compression technology;when the pressure is between 1.2-4kg, RAETTS air bearing blower adopts the double-stages air suspension bearing compression technology, which has extremely high efficiency.

RAETTS blower advantages:

1. Super energy-saving

Thanks to the world’s advanced energy-saving blower technology, RAETTS air bearing blower can save energy by more than 30% compared with traditional blowers,and more than 5% compared with the same specific blowers.

2. Ultra-high efficiency