The difference between Roots blower and ordinary blower
Roots blower and ordinary blower are two common gas conveying equipment, which have significant differences in structure, working principle, and application scenarios. Understanding these differences can help users choose the appropriate type of fan based on their actual needs.
Firstly, there are significant structural differences between Roots blowers and conventional blowers. Roots blower is a type of positive displacement fan, mainly composed of two interlocked rotors and a casing. During the rotation of the rotor, gas is drawn in from the inlet and compressed before being discharged from the outlet. Ordinary fans are usually centrifugal fans or axial fans, and their structure includes components such as impellers, casings, and motors. Centrifugal fans generate centrifugal force through the rotation of the impeller, expelling gas from the center outward; Axial flow fans circulate gas along the axial direction through the rotation of the impeller.
Secondly, the working principles of Roots blowers and ordinary blowers are also different. The working principle of Roots blower is to seal the gas in the space between two rotors and the casing through the rotation of the rotor, and compress it. Due to the lack of direct contact between the rotors of the Roots blower and between the rotors and the casing, there is less wear and a longer service life. The working principle of ordinary fans is to generate airflow through the rotation of the impeller, and transport gas from the inlet to the outlet. Centrifugal fans compress gas through centrifugal force, while axial fans transport gas through axial flow.
Thirdly, there are differences in performance characteristics between Roots blowers and regular blowers. Roots blower has high pressure and large air volume, which can provide stable airflow at high pressure. Due to its volumetric working principle, the Roots blower has minimal airflow pulsation and is suitable for applications that require high airflow stability. However, ordinary fans have relatively low pressure and air volume, making them suitable for situations where airflow stability is not a high requirement. Centrifugal fans are suitable for medium to high pressure applications, while axial fans are suitable for low pressure and high flow applications.
In addition, Roots blowers and regular blowers have different applications. Roots blowers are widely used in industries such as sewage treatment, pneumatic conveying, vacuum packaging, chemical, metallurgical, food, and medicine. Due to its reliable characteristics, Roots blowers play an important role in these industries. Ordinary fans are widely used in fields such as ventilation, air conditioning, cooling, and dust removal. Centrifugal fans are suitable for applications that require medium to high pressure, such as boiler induced draft, industrial ventilation, etc; Axial flow fans are suitable for situations that require low pressure and high flow, such as factory ventilation, cooling towers, etc.
Overall, there are significant differences between Roots blowers and conventional blowers in terms of structure, working principle, performance characteristics, and application scenarios. When selecting the type of fan, users should consider the actual needs and application scenarios comprehensively and choose the most suitable type of fan.
