Piston compressor, semi hermetic compressors, copeland DWM compressors

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Piston compressor features:
Advanced technology, compact size, small size, small space, high-precision machining ensures that piston compressors meet standards, CNC machining center, concentricity brought by specific machining technology, minimum dead angle, smooth operation, low vibration, low noise, excellent High stability, using R22, R404 and other refrigerants to protect the environment, medium and low temperature applications, motor protection device, PTC sensor, wear-resistant drive gear, chrome-plated piston ring and aluminum piston, hardened crankshaft, low-friction bearing set, high-efficiency valve plate design, Large cooling capacity, low energy consumption, effective compression ratio, valve spring adopts imported shock-resistant spring steel, general spare parts, easy maintenance

Piston air compressor - is the most common and most used type of reciprocating air compressor, and its piston is in direct contact with the gas. Compressed gas is sealed by piston rings. In pneumatic transmission, positive displacement piston air compressors are usually used. Two typical structures are introduced here to help understand the working principle of air compressors.
The cylinder centerline of the vertical air compressor is perpendicular to the ground, and the cylinder centerline of the horizontal air compressor is parallel to the ground. The rotary motion of the prime mover (electric motor or internal combustion engine) is converted into the reciprocating linear motion of the piston through the crank connecting rod mechanism. The air intake and exhaust process in the air compressor are similar to the oil suction and oil pressure process of the hydraulic pump.
Piston air compressors are generally classified by exhaust pressure, exhaust volume (volume flow), structural type and structural characteristics.
1. According to the level of exhaust pressure, it is divided into:
Low pressure air compressor Exhaust pressure≤1.0MPa
Medium pressure air compressor 1.0MPa<exhaust pressure≤10MP
High pressure air compressor 10MPa<exhaust pressure≤100MPa
2. According to the size of the exhaust volume, it is divided into:
Small air compressor 1m3/min<exhaust volume≤10m3/min
Medium air compressor 10m3/min<discharge volume≤100m3/min
Large Air Compressor Displacement >100m3/min
The displacement of the air compressor refers to the free gas flow in the suction state.
General regulations: Shaft power <15KW, exhaust pressure ≤1.4MPa is a micro air compressor
3. According to the relative position of the cylinder centerline and the ground, it is divided into:
Vertical air compressor - the center line of the cylinder is arranged perpendicular to the ground.
Angle type air compressor - the center line of the cylinder forms a certain angle with the ground (V-type, W-type, L-type, etc.).
Horizontal air compressor - the center line of the cylinder is parallel to the ground, and the cylinder is arranged on one side of the crankshaft.
For the dynamic balance air compressor - the center line of the cylinder is parallel to the ground, and the cylinders are symmetrically arranged on both sides of the crankshaft.
4 According to the structural characteristics, it is divided into:
Single acting - the gas is compressed on only one side of the piston.
Double acting - gas is compressed on both sides of the piston.
Water-cooled - refers to the cylinder with a cooling water jacket, water cooling.
Air-cooled - the outer surface of the cylinder is cast with cooling fins, air-cooled.
Fixed - the air compressor unit is fixed on the foundation.
Mobile - the air compressor unit is placed on the mobile device for easy handling.
Oil-lubricated—refers to oil-filled lubrication in the cylinder and circulating lubrication of the motion mechanism.
Oil-free lubrication - means that the cylinder is not lubricated with oil, the piston and cylinder are dry running, but the transmission mechanism is lubricated by lubricating oil.
All oil-free lubrication - the transmission mechanism in the cylinder is not oil-lubricated.
In addition, there are crossheads (small and medium oil-free air compressors) and crossheads (V, W-type low-pressure miniature air compressors)