Air compressor speed according to the principle can be divided into two broad categories and positive displacement.
Air machine is divided into:
1, Velocity; 2, displacement; displacement divided into rotary and reciprocating;
Rotary: (1) rotor; (2) Screw; (3) vane.
Reciprocating: (1) piston; (2) membrane.
Velocity: the impeller rotating at high speed by gas role obtain a large kinetic energy, followed by a sharp deceleration diffuser apparatus, the gas kinetic energy into potential energy, thereby increasing the gas pressure. Velocity mainly centrifugal and axial two basic types.
Displacement: by direct compressed gas, the gas volume reduced to achieve the purpose of improving the gas pressure, the piston displacement measurement based on the characteristics of the cylinder is divided into two types of rotary and reciprocating. Most of the preparation chamber positive displacement air compressor.
Rotary: piston rotates, the piston is also known as a cadre, ranging from the number rotor cylinder different shapes. Including rotor rotary, screw, rotary vane, etc. including piston compressor.
Reciprocating: reciprocating piston, the cylinder has a cylindrical shape. Reciprocating piston and a membrane including two of them piston is the most widely used type. Chamber with a piston-type compressor majority. Piston compressor classification model representation, structural characteristics and working principle is as follows:
Piston compressor discharge pressure generally, displacement (volume flow), structure type and structural features for classification.
1. Press the exhaust pressure level is divided into:
Low-pressure compressor discharge pressure ¡Ü 1.0MPa
Medium pressure compressor 1.0MPa <exhaust pressure ¡Ü 10MPa
High pressure air compressor compressor 10MPa <exhaust pressure ¡Ü 100MPa
2. Pick Displacement size is divided into:
Small air compressor 1m3/min <displacement ¡Ü 10m3/min
Medium-sized air compressor 10m3/min <displacement ¡Ü 100m3/min
Large air compressor displacement> 100m3/min
Displacement refers to the state of the air compressor suction gas flow freely.
General: shaft power <15KW, exhaust pressure ¡Ü 1.4MPa for micro air compressor.
3. According to the relative position of the cylinder centerline and the ground is divided into:
Vertical compressor - cylinder axis disposed perpendicular to the ground.
Angle Compressors - cylinder axis at an angle with the ground (V-type, W-, L-, etc.).
Horizontal Air Compressor - cylinder axis parallel to the ground, arranged in the cylinder crank side.
Compressors for balancing - the cylinder centerline parallel to the ground, the cylinder symmetrically arranged on both sides of the crankshaft.
4. Divided by structural features:
Single action - gas only on one side of the piston is compressed.
Dual role - both sides of the piston is compressed gas.
Water-cooled - refers to the cylinder with cooling water jacket, water cooled.
Air-cooled - the outer surface of the cylinder cast heat sink, air cooling.
Fixed - air compressor fixed on the foundation.
Mobile - air compressor is placed on mobile devices easy to move.
There are oil lubricated - refers cylinder oiling lubrication oil circulation lubrication motion mechanism.
Non-lubricated - means no greasing the cylinder, the piston and the cylinder is a dry run, but the drive mechanism consists of oil circulation lubrication.
Oil-free - no transmission mechanism within the cylinder lubrication.
Also divided into crosshead (small and medium oil-free compressor), no crosshead (V, W-type low-voltage mini air compressor); single-stage compression, two or multi-stage compression,
Dew point: keep the air in the water vapor constant, leaving the lower temperature, when the water vapor is saturated due to the time of cooling and the temperature, the dew point is the temperature. The dew point temperature is also used to indicate the amount of the water vapor content, the dew point temperature is higher, it means that the more water vapor in the air.
