Scroll compressor and screw compressor are both positive displacement rotary compressor.Vortex air compressor is to use the rotor and stator mesh to form a number of compression Chambers, with the translation and rotation of the rotor, the volume of each compression chamber changes constantly, to achieve gas inhalation and compression;The air compression of screw air compressor is achieved by the volume change of the tooth slots of Yin and Yang rotors which are engaged in parallel with each other in the housing.Please let me give you a detailed introduction.
The working principle of vortex air compressor
The main components of scroll compressor are two involute scroll bodies with the same shape but angular phase position is staggered by 180°. One is the fixed scroll, and the other is driven by an eccentric shaft, whose axis revolves around the fixed scroll axis.In the work, the two rolls form a sealing line in many places, and the two rolls are sealed properly at the end surface, so as to form several moon-shaped air cavities.The sealing line at the common tangential point between the two rolls is continuously transferred along the vortex curve as it circles the rolls, so that the shape and size of these crescent shaped air cavities are always changing.Compressor suction mouth open, in the upper portion of the fixed volume shell when eccentric shaft clockwise rotation, the gas from the suction mouth into the suction chamber, successively is intake to the periphery and suction cavity interlinked crescent in the chamber, as these peripheral crescent is the closed chamber not in communion with suction cavity, its closed volume is gradually transferred to the center of the fixed volume and shrinking, gas have been compressed and pressure.
Working principle of screw type air compressor
Screw air compressor cylinder is equipped with a pair of intermeshing spiral rotor Yin and Yang, the two reverse rotation.The gap between the rotors and the housing and the rotor is only 5 ~ 10 wires. The main rotor is driven by an engine or an electric motor. The negative rotor is driven by the main rotor through the oil film formed by oil injection, or driven by the synchronous gear of the main rotor end and concave rotor end.When the spiral rotor groove passes through the suction port, it is filled with gas. When the rotor rotates, the rotor groove is closed by the casing wall to form a compression chamber. When the rotor groove is closed, lubricating oil is sprayed into the compression chamber to seal, cool and lubricate.When the rotor rotates the compression lubricant + oil and gas mixture, the volume of the compression chamber decreases and the oil and gas mixture is compressed to the exhaust port.When the compression chamber passes through the exhaust port, the oil and gas mixture is discharged from the compressor, completing a suction - compression - exhaust process.Each rotor of the screw machine is supported by anti-friction bearing, which is fixed by the end cover near the end of the rotating shaft.The intake end is supported by roller bearings, and the exhaust end is supported by a conical roller on the opposite side. Usually, the exhaust end bearings position the rotor, that is, thrust bearings, resist axial thrust, bear radial load, and provide the necessary minimum clearance for axial operation.The working cycle can be divided into three processes: suction, compression and exhaust.As the rotor rotates, each pair of meshing teeth completes the same work cycle.
Advantages of scroll compressor
1, there is no reciprocating motion mechanism, so the structure is simple, small size, light weight, few parts (especially vulnerable parts), high reliability;
2, small torque change, high balance, small vibration, smooth operation, so easy to operate, easy to achieve automation;
3. High efficiency in the range of refrigerating capacity suitable for it;
4. Low noise
Advantages of screw type air compressor
1. Screw compressor and piston compressor are the same, both belong to positive displacement compressor.On the use of the effect of the screw air compressor has the following advantages.
2. High reliability.Screw compressor parts are few, no wearing parts, so it is reliable operation, long life, overhaul interval can reach 40,000 to 80,000 hours.
3. Convenient operation and maintenance.Screw compressor high degree of automation, operators do not have to go through a long time of professional training, can achieve unattended operation.
4. Good power balance.Screw compressor has no unbalance inertia force, the machine can work smoothly and high speed, can realize no foundation operation, especially suitable for mobile compressor, small volume, light weight, small area.
5. Adaptable.Screw compressor has the characteristics of forced gas transmission, volume flow is almost not affected by exhaust pressure, in a wide range of high efficiency, in the compressor structure does not make any changes, suitable for a variety of working conditions.
Scroll type air compressor application
Vortex machine is mainly used in offices, hospitals, laboratories and other places with high requirements for noise and vibration, it should be said that vortex machine in the air compressor is the least noise and vibration of a type.There's nothing energy-saving about it.If you want to use the scroll machine to recommend Hitachi brand, it is not cheap, but the quality is really good.
Application of screw type air compressor
Screw type air compressor is widely used in machinery, metallurgy, electronic power, medicine, packaging, chemical industry, food, mining, textile, transportation and other industrial fields, as the main product of compressed air compressor.