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

2026-04-10Views:

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.

More Recommendations

  • 2026-04-10

    Air compressor post-treatment dryer knowledge

    Knowledge of air compressor post-processing dryer: ① What is adsorption? How does adsorption occur? Adsorption is the phenomenon that the concentration of substances changes automatically at the interface of two phases. All solids have varying degrees of the ability to adsorb molecules, atoms, or ions of the surrounding medium to their own surfaces.

    View details
  • 2026-04-10

    How to automatically drain the air storage tank for air compressor

    When the air compressor is in use, when the air humidity is high, there will be more water after the compressed air. If the air is dry in winter, there will be less water. If it is troublesome to put it, it is recommended to install an automatic timing discharge device, and the cost of self-operation should be 300 or 400. According to the air compressor

    View details
  • 2026-04-10

    Parts failure of permanent magnet variable frequency air compressor with automatic start and stop

    If you need a water-lubricated oil-free air compressor, please contact us "Shanghai granklin Group" at 13918023456. We have produced oil-free screw air compressor between 5.5KW-250KW power. You are welcome to consult at any time.

    View details
  • 2026-04-10

    What oil is added to the air compressor

    What oil is added to the air compressor needs to be determined according to the type of air compressor. Small piston air compressor generally use ordinary mechanical oil can, viscosity is not too high on the line. If it is a screw air compressor or sliding vane air compressor, it is necessary to use special lubricating oil. Air compressor oil mainly plays the role of lubrication, cooling, rust prevention, cleaning, sealing and buffering. Its type is roughly divided into three types: synthetic oil, semi-synthetic, mineral oil;

    View details
  • 2026-04-10

    Principle and characteristics of water lubricated oil-free single screw air compressor

    Single screw air compressor is now the air compressor industry leader, its working principle is better than the twin screw air compressor. Shanghai granklin group (water lubricated oil-free single screw air compressor) production plant. Those who need to see the goods and visit can visit our company at any time.

    View details
  • 2026-04-10

    Items that Novice Needs to Check to Start Oil Injection Screw Air Compressor

    Before using the air compressor, please read the manual or discuss with the air compressor technician, the equipment is safe and the cost of the enterprise is reduced. Before operating the air compressor, you must be familiar with the following issues: 1. Keep the lubricating oil in the oil pool within the scale range, and the flow rate of the tanker before the air compressor runs shall not be lower than the scale line value.

    View details
  • 2026-04-10

    How to ask for a reasonable air compressor quotation

    In an increasingly competitive industry, customers are often misled by lower air compressor prices and buy an air compressor with low price but poor quality. Here is a brief introduction to the relevant knowledge about the price of air compressor.

    View details
  • 2026-04-10

    How to effectively reduce the cost of air compressor configuration precision filter

    Precision filters are one of the common configurations of air compressor post-processing equipment. What is its function? Why should a filter be configured? For reference only: First of all, because the natural air sucked by the air compressor contains impurities such as moisture and dust, the air

    View details
  • 2026-04-10

    Oil-free air compressor by what lubrication

    The water-lubricated air compressor produced by Shanghai granklin group does not need to be treated. because water lubrication is adopted, it can be used only by matching the cold dryer and air storage tank at the back end and configuring filters according to special needs.

    View details
  • 2026-04-10

    Air compressor cannot be started because of high voltage

    Air compressors are used in various production fields. Due to the different quality of equipment, they will be reported for repair more or less. Common faults mainly include high-temperature shutdown, frequent loading and unloading, and failure to start when the voltage is too high. When the air compressor fails

    View details