The principle and difference between screw air compressor and scroll air compressor

screw air compressor:

there is a pair of rotors inside the screw air compressor, and they are toothed with each other. The working cycle can be divided into three processes, namely suction, compression and exhaust. As the rotor continues to rotate, the intermeshing teeth complete the same duty cycle.

scroll air compressor:

the internal structure of the scroll air compressor is mainly composed of a fixed scroll body and a winding scroll body. There is a sealing line between the two scroll bodies, forming a crescent-shaped air cavity. However, the sealing line will also change, so the shape of the air cavity will also change and will not remain the same all the time. The air compressor shell has an air suction port and is fixed. During operation, the gas enters from the air suction port and then enters the crescent-shaped air cavity. After the air cavity is slowly closed, the air cavity and the suction port are blocked, the gas is slowly compressed, the pressure is slowly increased, and the volume is slowly reduced.

The difference between screw air compressor and scroll air compressor is as follows:

1, the working principle is different

the working principle of the scroll air compressor: The main components of the compressor are two involute scroll coils with the same shape but the angular phase positions are relatively staggered by 180 °. One is a fixed coil, and the other is driven by an eccentric shaft., The axis revolves around the axis of the fixed coil. In operation, the two coils are cut in multiple directions to form a sealing line, and the two coils are properly sealed at the end faces to form several crescent-shaped air cavities.

Screw air compressor principle: screw air compressor cylinder is equipped with a pair of intermeshing spiral male and female rotor, two rotor has several concave teeth, the two reverse rotation of each other. The working cycle can be divided into three processes: suction, compression and exhaust. As the rotor rotates, each pair of intermeshing teeth successively completes the same duty cycle.

2. Different working conditions

scroll compressors have the characteristics of small torque changes, high balance, low vibration, stable operation, simple operation, easy realization of automation, and low noise. They are mostly used under air-conditioning conditions.

The screw air compressor has high operability, good power balance and strong adaptability, and is suitable for various working conditions.

Advantages of screw air compressor

1. Screw compressors are the same as piston compressors and belong to positive displacement compressors. On the use of the effect to see the screw air compressor has the following advantages.

2. High reliability. Screw compressor parts less, no wearing parts, so it is reliable operation, long life, overhaul interval of up to 4-80000 hours.

3. Convenient operation and maintenance. The screw compressor has a high degree of automation, and the operator does not have to go through a long period of training, and can realize unattended operation.