Main types of vacuum pumps and blowers in the UK market
Most types of vacuum pumps / blowers are supplied in either a ‘vacuum’ or ‘blower’ configuration. Either way the same technology is capable of being used for both requirements. In the UK the most common technology used for the pumps are
- Side channel pumps
- Rotary vane pumps
- Claw pumps
The technology and operating principle of these types are outlined below
Side Channel Blowers, G-series
Some technologies are so good that it is hard to improve them. The Elmo Rietschle Side channel blowers are such an example. Performing flawlessly day in and day out with virtually no downtime, the G-Series has a proven history of outstanding reliability over many decades of service.
We offer side channel blowers in a wide variety of performance ranges to cover the most varied requirements, up to 3,000 m³/h and differential pressures of up to 1,000 mbar.
Advantages at a Glance
- Reliable and built-to-last, virtually maintenance free
- Robust yet light-weight
- For use worldwide (UL/CSA/IEC/EN approval)
- 50/60 Hz voltage range motors
- ATEX 94/9 EG
- Adjustable speed via external or integral converter
Side Channel Blower Operating principle
How does a side channel blower work?
The G-Series impeller is mounted directly on the motor shaft for contact free compression. Maximum operational reliability, even at high differential pressures, is ensured by the arrangement of the bearings outside the compression chamber.
The gas is taken in through the inlet. As it enters the side channel, the rotating impeller imparts velocity to the gas in the direction of rotation. Centrifugal force in the impeller blades accelerates the gas outward and the pressure increases.
Every rotation adds kinetic energy, resulting in further increase of pressure along the side channel. The side channel narrows at the rotor, sweeping the gas off the impeller blades and discharging it through the outlet silencer where it exits the pump.
Rotary vane vacuum pumps, V-Series
Our leading industrial dry running and oil lubricated rotary vane pumps cater for a wide performance range. The eco-friendly dry running rotary vane pumps are used for industrial vacuum, pressure and combined pressure and vacuum applications. Whilst, the time-tested oil lubricated rotary vane machines are typically used for generating vacuum.
Advantages at a glance
- Dry running and oil lubricated versions
- Low noise level
- Robust and economical
- Long up times
- Easy to operate
- Easy to maintain
- Low oil consumption on oil lubricated machine
Claw vacuum pumps, C-series
The C-Series dry claw vacuum pumps and claw air compressors of Elmo Rietschle generate contact-free vacuum or compressed air efficiently and economically. This is possible because of the principle of internal compression in the rotary claw design. The gas is pre-compressed within the compressing chamber and is then discharged.
The Elmo Rietschle dry claw pumps offer significant energy saving and high efficiency compared to the traditional rotary lobe blower designs without internal compression.
Our innovative claw technology
The claws of the C-Series feature an optimized, high precision shape and roll together without contact, synchronised by a precision gear set. The compression is achieved dry and wear free. Special seals separate the compression chamber and gearbox. The claw rotors control the transportation of the medium by opening and closing the inlet and outlet channels. Thus no sealing fluid within the compression chamber is needed.
Explosion proof versions with reduced leakage are available as well as ATEX compliant vacuum pumps and compressors.