Sales of rotary compressors increased by 17.4% year-on-year in 2014

The compressor is regarded as the heart of the refrigeration system, and the vocabulary that best expresses the characteristics of the compressor is called a "steam pump." The actual duty of the compressor is to increase the pressure and increase the suction pressure state to the exhaust pressure state.
Compression ratio is a technical expression of pressure difference, which means the absolute pressure on the high pressure side divided by the absolute pressure on the low pressure side. The compression ratio must be calculated using absolute pressure. To avoid negative values ​​in the calculated compression ratio, absolute pressure must be used instead of gauge pressure when calculating pressure ratios. It is only meaningful to use absolute pressure to make the compression ratio positive.
There are five types of compressors used in the refrigeration and air-conditioning industry: reciprocating, screw, rotary, scroll, and centrifugal, where reciprocating is the most widely used compressor in small and medium commercial refrigeration systems. Screw compressors are mainly used in large commercial and industrial systems. Rotary compressors and scroll compressors are mainly used for home and small-capacity commercial air conditioners. Centrifugal compressors are widely used for air conditioning systems in large buildings.
In 2014, 150 million units of rotary compressors were sold, a year-on-year increase of 17.4%. The rapid expansion of domestic sales of air conditioners has contributed to the rapid expansion of domestic sales, especially after the upgrade of energy efficiency of inverter products.
At the same time, however, the air-conditioning retail end performed poorly, and the channel stock index was high, but the entire machine production was not timely and rationally controlled, leading to advanced overdraft demand for domestic compressors. For 15 years, there are hidden concerns. In the 15 years of air-conditioning and compressor industries, it is inevitable to shrink.

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