Shanghai Rotorcomp Screw Compressor Co., Ltd.
  • Rotary Screw Compressor Historical well-known manufacturer producing quality screw compressor,oil free compressor,high pressure compressor in ISO,TUV,CE certificates with good price, 5 years warranty, patented unique design, more energy-saving , reliable compressor system for al Rotary Screw Compressor
  • Oil Free Compressor Shanghai rotorcomp screw compressor offer 100% clean oil free air compressor that can be made in air cooled &water cooled, we can customize according to the special requests, and OEM service... Oil Free Compressor
  • Air Treatment Systems After-processing equipment of compressorISO,CE,TUV,ASME standard manufacturer producing quality Refrigerated air dryer,Desiccant air dryer, precised pipe filter from 1micron to 0.001micron, active-car... Air Treatment Systems
  • Diesel Movable Screw Compressor Diesel movable screw compressorReliable diesel portable screw compressor manufacturer producing quality diesel screw compressor from 50cfm--1600cfm@100psi-500psi in ISO,TUV,CE certificates with good p... Diesel Movable Screw Compressor
  • Screw Air End SCREW AIR ENDWorld-top Rotorcomp compact air screw compressor with best efficient in smaller demension in ISO,TUV certificates, 5 years warranty.Rotorcomp oil-injected screw air ends create the heart ... Screw Air End
Tel: +86-021-67150020
Fax: +86-021-67150020
Add: No.28 Minta Road, Songjiang District Shanghai, China

How To Choose Compressor

Different types of compressors
Air compressors have been used in industry for well over 100 years because air as a resource is safe, flexible, clean and convenient.  These machines have evolved into highly reliable* pieces of equipment, that are almost indispensable in many of the applications they serve.  Compressors can come in a wide variety of different types and sizes.

The most common types of compressors in use today are:
Although other types of compressors are available

Rotary Screw Compressors work on the principle of air filling the void between two helical mated screws and their housing. As the two helical screws are turned, the volume is reduced resulting in an increase in air pressure. Most rotary screw compressors inject oil into the bearing and compression area. The reasons are for cooling, lubrication and creating a seal between screws and the housing wall to reduce internal leakage. After the compression cycle, the oil and air must be separated before the air can be used by the air system.

Rotary Sliding Vane Compressors like Reciprocating and Rotary Screw compressors are positive displacement compressors. The compressor pump consists primarily of a rotor, stator, and 8 blades. The slotted rotor is eccentrically arranged within the stator providing a crescent shaped swept area between the intake and exhaust ports. As the rotor turns a single revolution, compression is achieved as the volume goes from a maximum at the intake ports to a minimum at the exhaust port. The vanes are forced outward from within the rotor slots and held against the stator wall by rotational acceleration. Oil is injected into the air intake and along the stator walls to cool the air, lubricate the bearings and vanes, and provide a seal between the vanes and the stator wall. After the compression cycle, the oil and air must be separated before the air can be transferred to the air system.

Reciprocating or Piston compressors are the most common machines available on the market. They are positive displacement compressors and can be found in ranges from fractional to very high horsepowers. Positive displacement air compressors work by filling an air chamber with air and then reducing the chamber’s volume (Reciprocating, Rotary Screw and Rotary Sliding Vane are all positive displacement compressors). Reciprocating compressors work in a very similar manner as does as internal combustion engine but basically in a reverse process. They have cylinders, pistons, crankshafts, valves and housing blocks.

Centrifugal Compressors are not positive displacement compressors like the Reciprocating, Screw or Vane Compressors. They use very high-speed spinning impellers (up to 60,000 rpm) to accelerate the air then diffuser to decelerate the air. This process, called dynamic compression, uses velocity to cause an increase in pressure. In most Centrifugal compressors, there are several of these impeller/diffuser combinations. Typically, these machines have intercoolers between each stage to cool the air as well as remove 100% of the condensate to avoid impeller damage due to erosion.

  • TEL:+86-021-67150020
  • FAX:+86-021-67150020
  • ADDRESS:No.28 Minta Road, Songjiang District Shanghai, China