The term 'suspended Roots blower' may cause some confusion, as it does not include the characteristic of 'suspension', but rather refers to a type of positive displacement fan. However, in fan technology, there does exist an "air suspension fan", which differs significantly in principle and application from the Roots blower. The following is a comparative analysis of Roots blower and air suspension blower to help understand these two types of blowers:
Roots Blower
1. Working principle:
Roots blower belongs to positive displacement blower, and its working principle is to use two blade rotors (usually three blades) to compress and transport gas through relative motion in the cylinder.
2. Structural features:
The structure is simple and easy to manufacture.
The continuous flow of gas is ensured between rotors through small gaps, while reducing leakage.
3. Application scenarios:
Suitable for occasions such as material transportation and gas pressurization.
Excellent performance in gas delivery and pressurization systems in low-pressure environments.
Widely used in aquaculture oxygenation, sewage treatment aeration and other fields.
4. Performance parameters:
The output pressure is usually between 0.1 and 1.2 kgf/cm2 (or 9.8196 kPa).
The air volume range is between 0.5100m3/min (or 0.6824.6m3/min).
5. Maintenance and upkeep:
Using ordinary speed increasing bearings, it is necessary to regularly add lubricating grease for lubrication.
The service life is mostly between 5-10 years, and the maintenance cost is relatively high.
Air suspension fan
1. Working principle:
The air suspension fan adopts the centrifugal working principle and achieves air suction and compression through magnetic levitation technology and contactless motor drive.
2. Structural features:
The overall structure of the machine has a high degree of integration, including components such as volutes, permanent magnet motors, and air suspension bearings.
The use of air suspension bearings reduces mechanical friction and improves the operational efficiency and lifespan of the fan.
3. Application scenarios:
More suitable for high-pressure and high flow applications, such as turbine generator sets, railway braking devices, etc.
The characteristics of high air volume and high pressure make it an ideal choice in these fields.
4. Performance parameters:
The output pressure is usually between 5-10 kgf/cm2.
The air volume range is between 10~5000m3/min.
5. Maintenance and upkeep:
Using air suspension bearings does not require lubrication with grease, making maintenance relatively simple and convenient.
Due to low friction, it has a longer service life and relatively lower operating costs.
The procurement cost is relatively high, mainly due to the use of advanced magnetic levitation technology and material manufacturing.
summary
1. Roots blowers are widely used in the industrial field due to their simple structure, low cost, and wide applicability.
2. Air suspension fans perform well in high-pressure and high flow situations due to their advantages of energy, low noise, and low maintenance costs.
Regarding the "suspended Roots blower", if it refers to a new type of blower that combines Roots blower and suspension technology, there is currently no widely recognized product name for this type in the market. When selecting a fan, the appropriate type should be chosen based on the specific application scenario and requirements.
