PA Series - Energy Saving Open type Vane Compressor

Rotary Vane Compressor

PA series designed based on NAILI A series rotary vane compressors and which is more applicable for the outdoor in tropical countries!

Simple design with few moving parts. Robust, compact construction, easy access and maintenance, easy to replace parts, extremely reliable and durable.

What is a vane compressor?

The rotary vane compressor is mainly composed of a cylindrical shell, two openings (one outlet, one suction port) and a rotor eccentrically positioned relative to the shell.

A rotary vane compressor consist of a cylindrical housing, adjustable vanes on an eccentric drive shaft, inlet, and outlet. Because the drive shaft is eccentric, the vanes create airtight chambers as they push against the cylinder walls. As air enters the largest chamber at the inlet, as the vanes rotate and retract, the chamber becomes smaller until the walls reduce the amount of air. The compressed air is then expelled from the outlet and powers other processes on the production line.

What types of compressors are there?

According to different working methods, it is mainly divided into four categories:

Rotary screw compressor.

Reciprocating air compressor.

Axial compressor.

Centrifugal compressor.

Our company mainly provides industrial rotary vane compressors and vehicle rotary vane compressors.

How does a vane compressor work?

In the first step, when the compressor rotates, the blades are pressed against the stator wall by centrifugal force. When the distance between the rotor and the stator increases, air is drawn in.

In the second step, the air is collected in different compressor chambers, which decrease as they rotate.

In the third step, when the blade passes through the outlet, the air is compressed and discharged.

The main engine is composed of several sliding vanes in the rotor, and the rotor rotates around the eccentric shaft in the static closed cylinder. As the rotor turns, centrifugal force causes the blades to slide and protrude out of the rotor's longitudinal grooves. In their extended state, these blades function like vanes, which adjust to the shape of the cylinder as they are driven by the rotor. When the pressure-activated intake valve opens, intake air enters the stator. This happens once the designed operating conditions are reached. Air is drawn into the cylinder through rotating vanes, which seal the space as it passes through the compression zone. Due to the eccentricity of the cylinder walls and the rotor, the volume between the vanes is reduced and the air is compressed. After maximum compression, the air is expelled through the outlet. In compressors, a large injection of coolant reduces the overall temperature of the compression cycle and ensures adequate lubrication. The injected coolant also acts as an active sealant to keep the blades airtight.

Features and advantages

Single-Stage Compression

The essence of the design is to generate enough compression in a single stage, resulting in a high compression ratio; during a single cycle, as well as better energy efficiency, reduced risk of failure, and reduced maintenance requirements.

Direct Axial Couplings for Electric Motors

Direct couplings are possible because the high compression ratio allows for low revolution without the need for a transmission or gears. Fewer parts mean lower energy consumption and simplified maintenance.

Low Speed

Low RPM reduces vibration, which reduces noise, wear and tear, lowers temperatures, and eliminates the need for concrete foundations.

Low Temperature

Lower temperatures reduce wear and tear, coolant consumption, and leakage caused by part expansion. Less energy is required for cooling and the delivered air is of higher purity.

Low Maintenance

With less component wear and tear, the single-stage rotary vane unit provides cleaner, more reliable operation, significantly reducing maintenance requirements.

Compressed Air Solution:

PA/PB series rotary vane compressors which is driven by High performance permanent magnet electric synchronous motor and all motors approved by IE4! 

The purpose of combination designed to make the higher air capacity with highest efficiency! 

INVT provided reliable and stable Inverter, the speed is variable and easier for the customer to adjust the air capacity to the user's needs!

All compressors widely used in Metal smelting, Textile, Pharmaceutical, Petroleum, Chemical, Cement, Food Package, Printing and packaging, and other industries.

Permanent magnet electric motor qualified by ISO, EC, even passed UL and DOE;、

Energy Saving Open type Vane Compressor Parameters: 

PA7~PA22

PA30~PA55