The market demand for screw compressors has reached an important position

Although large-scale centrifugal compressors designed and manufactured in China have basically had successful experience in trial production and use in recent years, centrifugal compressors are bulky relative to axial compressors because they are the same as speed compressors. The weight is heavy, the efficiency is low, the energy consumption is large, and the degree of automation is low, so the development is slow. The number of patent applications for rotary compressors represented was in a leap year and year, respectively, but in the year, patent applications for rotary compressors were almost stagnant.

Although the rotary compressor with the most use in air conditioning has the advantages of mature technology, reliable use, and high cost performance, it is still insufficient in terms of noise vibration, so it is more reflected in solving practical problems in production, so there are fewer patent applications. . The number of patent applications represented by the screw compressors in the past year has been increasing rapidly, and the growth rate has greatly exceeded that of the other important compressors. A survey of compressor market share shows that the market demand for screw compressors has grown steadily and has taken an important position.

Due to the no-flow pulsation of the screw compressor, the operation is stable, the volume is small, the weight is light, the structure is simple, and there are no wearing parts, etc. In recent years, the technology has developed rapidly, which is one of the development directions of the process compressor. The reciprocating compressor represented is relatively mature due to its technology, but its technical progress has not stagnated. After entering the trough from the year to the end of 1994, it has developed rapidly. Subsequent technological innovations are mainly reflected in improving the life of the valve plug piston ring and reducing noise and other auxiliary aspects to optimize and perfect the reciprocating compressor. This makes the reciprocating compressor maintain the advantages of low energy consumption, convenient pressure regulation and other comprehensive technical economic benefits in the traditional application range of large volume flow, and is still in the leading position in the market share.