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Rotary Vane Air Compressors

Air Compressors

Rotary Vane Air  Compressors Overview

The rotary vane air compressor is one of the most popular option, specifically for its energy-saving mechanism. The rotary vane air compressors started becoming popular in the late 1990s, allowing industrial manufacturers to create balanced pressure in their system. The rotary vane air compressors can produce more air and are significantly more efficient compared to its competitors. It allows industrial applicants to use compressed air in the most effective methods.

Structure of Rotary Vane Air Compressors

The rotary vane air compressors utilize a rotor in the mechanism, with a drum placed eccentrically near a drum in a casing. The inlet and outlets designed on the rotary vane air compressors allow air to flow in and out of the system. The drum takes the minor air port near the outlet port, transferring it to a more significant inlet port.

The compressor also has several radial slots within the installed rotors. The rotors also have spring-fitted vanes in them, allowing them to keep contact between the vanes and housing at all times. Vanes can rotate or extend when the rotor starts operating.

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Working Principle of the Vane Air Compressors

The system of the vane compressors allows the air trapped between adjacent vanes at the inlet port to compress because of the shrinking space because the rotor moves around its rotation axis, while reaching the outlet port. However, the users may have to lubricate the mechanism to prevent air from escaping the system, ensuring consistent air compression. The oil lubricant makes sealing the air easier, contributing to the performance of the vane compressors.

However, you can also find designs without needing oil, but there’s still an elastic component installed. It can be a spring that connects the vane and the drums for better air compression, as it consistently pushes the vanes against the housing. The mechanism allows ensuring almost no air leaks in the rotary vane compressor. Remember, the pressure ratio produced in the compressor depends on the number of vanes installed in the system. The higher the number of sliding vanes, the more pressure the rotary vane creates.

There’s an average 5:1 pressure difference in a standard rotary vane compressor. However, the better designs can provide an 8:1 pressure ratio for industrial applications. The number of vanes in these compressors can increase to 20 or 30, depending on your vane compressors’ workload. The higher vane number also increases the total pressure capacity to 150 PSIG (1,034 kPag) for most compressors.

Applications of the Rotary Vane Air Compressors

The rotary vane air compressors are of the oldest compressor designs in the market. Thus, they are suitable for a range of industrial applications. For example, they may help modern manufacturing processes with higher pressure requirements. The most common use of these pumps is for planting or farming equipment in agriculture.

The vane compressors are also best for the packaging and beverage industry, commonly product handling or air knives. So, it is safe to say that rotary vane air compressors are best for industries that use air-operated tools.

Bottom line

The rotary vane air compressors are best for industrial applications because of the following features:

  • Simple Design Versatile
  • Efficient
  • Low Initial Costs
  • Long Life Expectancy (100K Hours)

These qualities make the rotary vane air compressors ideal for applications requiring consistent pressure production.

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