Roots Vacuum Pump

Q: Can Roots pumps be used in processes involving condensable vapors or particles?

Yes, but they should be protected via inlet filters. For condensable vapors, AIMRSE recommends using gas ballast on the backing pump and maintaining operating temperature to prevent condensation. Specialized coatings are available for corrosive applications.

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Cat	Products Name	Key Features
VGE-RVP-111	Roots Vacuum Pump 20000 m³/h 1480 r/min 30kW DIN400	20000 m³/h; 30 kW; 1480 r/min
VGE-RVP-112	Roots Vacuum Pump 40000 m³/h 2900 r/min 37kW DIN400	40000 m³/h; 37 kW; 2900 r/min
VGE-RVP-113	Roots Vacuum Pump 1100 m³/h 2900 r/min 4to30kW DIN125	1100 m³/h; 4-30 kW; 2900 r/min
VGE-RVP-114	Roots Vacuum Pump 2200 m³/h 1450 r/min 7.5to75kW DIN250	2200 m³/h; 7.5-75 kW; 1450 r/min
VGE-RVP-115	Roots Vacuum Pump 3200 m³/h 1450 r/min 11to90kW DIN300	3200 m³/h; 11-90 kW; 1450 r/min
VGE-RVP-116	Roots Vacuum Pump 4500 m³/h 1450 r/min 11to132kW DIN350	4500 m³/h; 11-132 kW; 1450 r/min
VGE-RVP-117	Roots Vacuum Pump 9000 m³/h 980 r/min 22to250kW DIN350	9000 m³/h; 22-250 kW; 980 r/min
VGE-RVP-118	Roots Vacuum Pump 13500 m³/h 1450 r/min 30to250kW DIN350	13500 m³/h; 30-250 kW; 1450 r/min
VGE-RVP-119	Roots Vacuum Pump 18000 m³/h 1450 r/min 37to250kW DIN400	18000 m³/h; 37-250 kW; 1450 r/min

High-Throughput Roots Vacuum Booster Technology

Industrial-scale vacuum processes require massive volumetric displacement that transcends the capabilities of primary backing pumps. AIMRSE Roots vacuum pumps, often referred to as vacuum boosters, are engineered to provide high-speed gas evacuation in the medium-vacuum regime ($10^{2}$ to $10^{-1}$ Pa). Utilizing a twin-lobe rotary geometry, these pumps function through kinetic displacement, significantly enhancing the effective pumping speed of an integrated vacuum skid.

The AIMRSE Roots architecture is defined by precision-timed, non-contacting rotors that operate with minimal internal clearances to maximize volumetric efficiency. By integrating advanced thermal management and overflow bypass protection, our Roots boosters ensure stable throughput during high-load cycles. These systems are the cornerstone of large-scale metallurgical furnaces, space simulation chambers, and chemical vapor deposition (CVD) platforms where rapid pump-down and high gas-load handling are non-negotiable.

Scale Your Vacuum Capacity

Consult with our engineering team to calculate the optimal compression ratio and booster-to-backing pump compatibility for your system.

Global technical support available within 24 hours.

Kinetic Displacement & Volumetric Optimization

Twin-Lobe Rotary Geometry

The core mechanism consists of two symmetrical, figure-eight rotors rotating synchronously in opposite directions. As the lobes pass the inlet port, a specific volume of gas is trapped and mechanically displaced toward the exhaust. The non-contacting design eliminates the need for internal lubrication in the pumping chamber, ensuring an oil-free process path and minimal mechanical wear.

Precision Timing & Volumetric Efficiency

Synchronization is maintained via high-precision helical timing gears, keeping rotor clearances within microns. This tight tolerance reduces gas back-leakage (internal slippage), which is critical for maintaining high compression ratios. The result is a consistent volumetric efficiency that allows the booster to multiply the pumping speed of the backing pump by a factor of 10 or more.

Automated Differential Bypass

To protect the motor and rotors from over-compression at high pressures, AIMRSE Roots pumps feature an integrated bypass (overflow) valve. This mechanism regulates the pressure differential between the inlet and outlet, allowing the pump to start simultaneously with the backing pump from atmospheric pressure, effectively shortening the overall pump-down cycle time.

The Advantages of AIMRSE

Engineered for high-volume throughput and industrial-scale stability.

Massive Throughput

Delivers exceptional pumping speeds in the medium vacuum range, ideal for large-volume industrial chambers.

Oil-Free Pumping

The non-contacting rotary design ensures a hydrocarbon-free gas path, preventing process contamination.

Low Energy Consumption

Optimized motor dynamics and reduced internal friction lead to lower power requirements per unit of volume displacement.

Integrated Reliability

Standardized flange interfaces and VFD compatibility allow for easy integration into complex multi-stage vacuum skids.

Standards & Industrial Compliance

AIMRSE Roots vacuum pumps are manufactured to meet the highest Global Engineering Standards for high-volume gas handling. Every unit is tested in accordance with ISO 21360-1 (Vacuum pumps — Standard methods for measuring performance-characteristics). Our mechanical tolerances and timing gear precision are verified to comply with DIN 28426. Furthermore, all units are CE Certified for electrical safety and comply with ISO 1609 for standard vacuum flange dimensions, ensuring seamless industrial interoperability.

Technical FAQ

Why does a Roots vacuum pump require a backing pump to operate?

Roots pumps are volumetric boosters, not high-compression pumps. They operate with a relatively small compression ratio (typically 10:1 to 50:1 depending on the backing pressure). Since they have no internal compression against atmospheric pressure, they require a primary backing pump (such as a rotary vane or dry screw pump) to exhaust the displaced gas into the atmosphere.

What is the primary function of the integrated bypass (overflow) valve?

The bypass valve protects the pump and motor from the high differential pressures encountered during the initial stages of pump-down. It allows gas to circulate from the outlet back to the inlet if the pressure difference is too high, preventing motor overload and excessive heat generation. This enables the Roots pump to be switched on at higher pressures, significantly reducing the total evacuation time.

Can Roots pumps be used in processes involving condensable vapors or particles?

Roots pumps are generally robust but should be protected from large particle ingress via inlet filters. For processes with condensable vapors, we recommend using a gas ballast on the backing pump and ensuring the Roots pump operates at a sufficient temperature to prevent internal condensation. For corrosive applications, AIMRSE offers specialized coatings and nitrogen purging for the gear and bearing housings.

Related Products

Note: Our vacuum equipment is for research and industrial testing only. Industrial-grade components are fully rated for field deployment.

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