Transport Refrigeration,Refrigeration Unit For Van,Refrigeration Unit For Van Freezer,Truck Frozen Refrigeration Unit XINXIANG HUATAI REFRIGERATION CO., LTD , https://www.trustht.com
From the working principle of the two types of compressors, the piston refrigeration compressor changes the working volume of the cylinder by the movement of the crankshaft linkage mechanism. In the case of a screw refrigeration compressor, the working volume is changed by the rotational motion of the rotor directly connected to the shaft.
Compared with the advantages and disadvantages of the two compressors, the screw refrigeration compressor has compact structure, small volume, light weight, no clearance volume, no liquid danger when a small amount of liquid enters the machine, and has wide application range, stable and reliable operation, and needs to be repaired. The cycle is long. The piston refrigeration compressor has lower processing and assembly requirements, is suitable for variable operating conditions, and has low noise. Under normal circumstances, no need for device noise reduction, sound insulation equipment and other auxiliary equipment.
The industry said that in the low temperature field, piston compressors have advantages due to technical reasons. Since the compressor is the core and heart of the refrigeration system, the capabilities and characteristics of the compressor determine the quality of the refrigeration system. At present, China's refrigeration industry has invested a lot of energy in the research of compressors, and new research directions and research results have emerged. In the market, there are many domestic piston compressor manufacturers, and many companies also export their products to overseas markets.
According to the structure, the compressor can be divided into two categories: semi-closed and closed. According to the industry, since the whole compressor is installed in a sealed casing that cannot be disassembled, it is difficult to open for internal repair. Therefore, such refrigeration compressors are required to have high reliability and long service life, and the fully enclosed structure is generally used for large Mass production of small refrigeration refrigeration compressors. The semi-hermetic compressor can adapt to a wide range of pressures and cooling capacity.
“Half-sealed piston products have developed more stably in recent years, and there should be no explosive growth. In terms of segmentation, growth will be more concentrated in certain areas, such as some special industry sectors.†Industry pointed out that semi-closed pistons Compressors have been rooted in the market for many years. The engineering maintenance market has many applications and convenient maintenance. The overall demand for the semi-sealed piston compressor market should remain. However, in the past few years, as more domestic enterprises have increased the production of this product, the market competition will become more intense.
According to relevant statistics, in January 2019, the total number of piston compressors produced was 15.76 million units, an increase of 8.6% year-on-year and 7.7% quarter-on-quarter; sales of 15.375 million units, an increase of 8.1% year-on-year and a 9.3% increase.
In addition, due to the Spring Festival holiday in February, the company has pre-shipped shipments, and the export market continues to improve, driving overall sales.
According to the industry, the overall market for fully sealed piston compressors in 2019 was better than expected. In the case that the domestic market is becoming saturated, many companies have begun to vigorously explore foreign markets. The export market is the main driving force of the compressor industry. There is still a lot of room for development in the future of the machine market.
At present, the core competitiveness of domestic manufacturers should be based on market demand, continuously research and develop new technologies, and maintain a more comprehensive overall solution capability to improve the level of after-sales service. In addition, the standards and specifications in the compressor market are still in urgent need of advice and improvement.
Fully sealed piston compressors develop a good export market as the main driving force
The closed type hot and cold cycle machine is a device that is used more in the pharmaceutical and chemical industry, and the compressor plays a vital role as a core component of the closed type heat cycle machine. It is understood that in closed-type hot and cold cycle compressors, it is mainly divided into screw refrigeration compressors and piston refrigeration compressors.