There are significant differences between Roots blowers and air compressors in multiple aspects. The following is a detailed comparison between the two:
1、 Structural form
Roots blower: It has various structural forms, such as belt driven blower, direct drive blower, as well as dense Roots blower, low-noise Roots blower, etc. Its typical structure consists of two interlocked rotors and a casing.
Air compressors: They also come in various types, such as positive displacement compressors, piston compressors, rotary compressors (including Roots dual rotor type, but it should be noted that the structural similarity with Roots fans does not necessarily equate to their overall function and purpose), slide compressors, liquid piston compressors, centrifugal compressors, and scroll compressors.
2、 Working principle
Roots blower: relies on the change in working chamber volume formed by the rotation of two involute "8" shaped rotors to transport gas. Its working principle is similar to that of a gear pump, and it belongs to a positive displacement blower.
Air compressor: The working principle varies depending on the type. For example, a piston compressor directly compresses gas through the reciprocating motion of the piston; Centrifugal compressors convert the kinetic energy of gas molecules into pressure energy by increasing their velocity.
3、 Main function and purpose
Roots blower: a constant flow blower mainly used for conveying gas flow under pressure. It is usually used in situations where stable gas flow is required, such as ventilation, material transportation, gas pressurization, exhaust gas treatment, and water treatment.
Air compressor: Its main function is to provide compressed air, that is, to achieve pressure. It is usually used in applications that require high-pressure gas, such as pneumatic tools, pneumatic machinery, air energy storage, and other fields.
4、 Performance parameters and applicable scenarios
Roots blower: The pressure range is usually between 0.1 and 1 kilogram (or higher, but generally lower than the air compressor), and the air volume range is relatively large. Suitable for occasions with high demand for air volume and relatively low pressure requirements.
Air compressor: With a high pressure range, it can meet the demand for pressures ranging from tens of Kpa to hundreds of Kpa or even higher. The air volume varies depending on the specific type and specifications. Suitable for situations with high pressure requirements and relatively low air volume requirements.
5、 Application industry
Roots blower: widely used in industrial, construction, environmental protection and other fields, such as sewage treatment, aquaculture (such as fish pond aeration and oxygenation), food processing, etc.
Air compressors are also widely used in various industries, but they are more focused on situations that require high-pressure gas supply, such as mechanical manufacturing, automotive manufacturing, aerospace and other fields.
In summary, there are significant differences between Roots blowers and air compressors in terms of structural form, working principle, main functions and purposes, performance parameters and applicable scenarios, as well as application industries. Therefore, when choosing to use it, comprehensive consideration should be given based on specific needs and conditions.
