Shanghai oil-free air compressor which brand is good

oil free air compressor which brand is good?

There are many brands of oil-free air compressors on the market, and the water-lubricated oil-free air compressors with a good reputation in China are "Shanghai Granklin Group". Oil-free air compressor manufacturers need long-term continuous technical accumulation, because it is a very important part in the after-sales of air compressors. If it is not a long-term operation of oil-free air compressors, it is difficult to solve the problem immediately.

A good brand of oil-free air compressor is the need to improve the certificate, good reputation in the market, high-quality after-sales service. Integrated operation products, with the best products and services to customers with high-quality experience.

1. Screw compressor

screw compressor is also called screw compressor. In the 1950 s, oil-injected screw compressors were used in refrigeration devices. Due to their simple structure and few wearing parts, they can have low exhaust temperature under large pressure difference or pressure ratio conditions. They are not sensitive to a large amount of lubricating oil (often called wet stroke) contained in the refrigerant, and have good air delivery adjustability. They quickly occupy the use range of large-capacity reciprocating compressors, and continue to extend to the medium capacity range, widely used in refrigeration, refrigeration, air conditioning and chemical processes and other refrigeration devices. In the industrial field is widely used, as well as medical and pharmaceutical use is also essential, and must use oil-free air compressor.

2. Centrifugal compressor

A centrifugal compressor is a vane rotary compressor (I. e., a turbine compressor). In the centrifugal compressor, the gas pressure is increased by the centrifugal force action given to the gas by the impeller rotating at a high speed and by the diffuser action given to the gas in the diffuser passage.

Early, because this compressor is only suitable for low, medium pressure, large flow occasions, and not for people's attention. Due to the development of the chemical industry, the establishment of various large chemical plants and refineries, centrifugal compressors have become the key machines for compressing and transporting various gases in chemical production, and occupy an extremely important position. With the achievements of gas dynamics research, the efficiency of centrifugal compressors has been continuously improved, and due to the successful development of high-pressure seals, small-flow narrow impellers, and multi-oil wedge bearings, a series of problems in the development of centrifugal compressors to high-pressure and wide-flow ranges have been solved, so that the application range of centrifugal compressors has been greatly expanded, so that they can replace reciprocating compressors in many occasions, and greatly expand the application range.

3. Reciprocating piston compressor

is the development of various types of compressors in the earliest one, 1500 BC China invented the wooden bellows for reciprocating piston compressor prototype. At the end of the 18th century, Britain made the first industrial reciprocating piston air compressor. Labyrinth compressors began to appear in the 1930 s, followed by various oil-free compressors and diaphragm compressors. In the 1950 s, the size of the large reciprocating piston compressor was greatly reduced, and the single machine was multi-used.

The piston compressor has a long history of use and is currently the most used compressor in China. Due to its wide pressure range, it can adapt to a wide energy range. It has the advantages of high speed, multi-cylinder, adjustable energy, high thermal efficiency, and suitable for various working conditions; its disadvantages are complex structure, many wearing parts, and maintenance cycle Short, sensitive to wet stroke, pulse vibration, poor operation stability.

Therefore, in the choice of air compressor brand and series, it is a better choice to choose the "water lubricated oil free air compressor" produced by Shanghai granklin group.