The air-conditioning compressor is an important part of the automobile air-conditioning system. The automobile air-conditioning system is mainly composed of four parts: the compressor, the condenser, the restrictor (expansion device) and the evaporator. The automotive air-conditioning compressor is the heart of the automotive air-conditioning refrigeration system, and is the power source for the refrigerant to circulate in the system. The structure of the condenser and the evaporator is similar. They are a row of curved pipes covered with metal sheets for heat dissipation, which exchange heat with the outside world. The principle is similar to the heat dissipation water tank of the engine. The main function of the expansion valve is to throttle and adjust the refrigerant flow. After the high temperature and high pressure liquid refrigerant is throttled through the expansion valve, the volume becomes larger, and the pressure and temperature of the refrigerant drop sharply.

The air conditioner compressor is the heart of the refrigeration system and the power source for the refrigerant to circulate in the system. The basic working principle of the refrigeration system mainly includes four processes: compression, condensation, throttling, and evaporation. The compressor compresses the low-temperature and low-pressure refrigerant into a high-temperature and high-pressure gaseous refrigerant, passes through the condenser and turns the refrigerant into a medium-temperature and high-pressure liquid refrigerant, then passes through the throttling expansion device into a low-temperature and low-pressure liquid refrigerant, and finally passes through the evaporator to become a low-temperature liquid refrigerant. Low pressure gas refrigerant. Evaporation absorbs a large amount of heat around, and then the low-temperature and low-pressure refrigerant is sucked into the air-conditioning compressor for the next refrigeration cycle, and the cycle is repeated to achieve the cooling effect.

Source of data for automotive air-conditioning compressors: Compiled by Qianzhan Industry Research Institute According to different working methods, compressors can generally be divided into reciprocating and rotary types. Common reciprocating compressors include crankshaft connecting rod type and axial piston type. Common rotary compressors There are rotary vane and scroll compressors. The swash plate type automotive air-conditioning compressor currently accounts for 49%, and the scroll type automotive air-conditioning compressor accounts for about 9%.

In recent years, with the development of the domestic economy, the manufacturing industry has gradually occupied the main position in the country. my country is the world's major production base for automotive air-conditioning compressors. With the increasing demand for automobiles and the improvement of vehicle manufacturing capabilities, the automotive air-conditioning compressor industry has also achieved great development. From 2011 to 2016, the output of my country's automotive air-conditioning compressors increased year by year, and the growth rate fluctuated and declined after 2013. In 2016, the output of automotive air-conditioning compressors continued to rise, reaching 31.23 million units, a year-on-year increase of 9.1%.

Automobile production and sales are booming

Bringing Development Opportunities for Automotive Air-Conditioning Compressors China's automotive industry has developed rapidly in recent years and has become an important pillar industry of the national economy. In 2017, the overall operation of my country's automobile industry was good, showing a steady growth trend. The annual production and sales reached a new high, ranking first in the world for nine consecutive years. According to statistics from the China Association of Automobile Manufacturers, in 2017, my country's automobile production and sales were 29.02 million and 28.88 million, up 3.2% and 3% year-on-year, respectively. Judging from the current production and sales situation, my country's auto market will grow steadily, which means that China's auto parts industry will develop steadily over the same period. With the development of my country's automobile industry, it also brings development opportunities to my country's automobile air-conditioning compressors.