Sunday, March 25, 2012

Air compressor is the main gas supply

Air compressor is the main gas supply, it is the original motive (usually motor) mechanical energy is converted into a gas pressure device, the pressure of the compressed air generating device.


Many different types of air compressors can be classified according to the principle of positive displacement compressors, speed compressor, the working principle of positive displacement compressors compress the volume of gas, so that the density of gas molecules in unit volume to increase in order to improve compressed air pressure; speed compressor works to improve the velocity of the gas molecules, the kinetic energy of gas molecules can be converted for gas pressure, thereby increasing the pressure of compressed air.


Now commonly used in air compressor piston air compressor, screw air compressors (screw air compressor is divided into a twin-screw air compressor and a single screw air compressor), centrifugal compressors and sliding chip air compressors, scroll air compressor. Here is the definition of various compressors. Cam, the diaphragm and the diffusion pump compressor is not included, because they use special and relatively small size.


Displacement compressors - directly depend on the change of gas volume to increase the gas pressure compressor.


Reciprocating compressor - positive displacement compressor, the compression element is a piston in the cylinder for reciprocating movement.


The rotary compressor - positive displacement compressor, compression is achieved by the forced movement of the rotating components.


The rotary vane compressor - varactor is a rotary compressor, axial vane radial sliding on the cylinder with the cylindrical eccentric rotor. Compressed air trapped between the vane discharge.


Liquid - piston compressor - is a rotary positive displacement compressor, in which water or other liquid as a piston to compress the gas, and gas emissions.


Roots dual piston compressors - is a rotary positive displacement compressor, in which the two Roots rotor meshing with each other so as to intercept the gas, and sent from the inlet to the exhaust port. There is no internal compression.


The screw compressor - rotary positive displacement compressor rotor in two of them with a helical gear mesh with each other, so that the gas is compressed and discharged.


Centrifugal compressor - is a speed type compressor, in which one or more rotating impeller (blade usually on the side) to enable the gas to accelerate.


Axial-flow compressor - is a speed type compressor in which the gas accelerated by the rotor with blades.


Speed ??type compressor - rotary continuous air compressor, in which high-speed rotating blades to make through the gas to accelerate, the speed can be converted into pressure. This transformation is part of the rotating blades on the part of the fixed diffuser or return baffle.


Mixed-flow compressor - is a speed type compressor, the shape of the rotor combines some of the characteristics of centrifugal and axial flow between the two. Jet compressor - high-speed gas or steam injection flow away inhalation of the gas pressure, and then in the mixed gas diffuser device will speed.

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