How does a refrigeration compressor work? Detailed introduction to the working principle of a refrigeration compressor

Refrigerating compressors are equipment that are often used in our industrial industry and in life, such as air conditioners, refrigerators, etc., all of which have refrigeration functions. Traditional refrigeration equipment must be equipped with refrigeration compressors, and the refrigeration function The quality of the refrigeration compressor is to pay attention to the quality of the refrigeration compressor, so when we buy refrigeration products, we must understand the performance of the refrigeration machine. Let’s take a look at the specific contents of the refrigerator.

Refrigeration compressor is the core and heart of the refrigeration system. The capabilities and characteristics of the compressor determine the capabilities and characteristics of the refrigeration system. In a sense, the design and matching of the refrigeration system reflects the capabilities of the compressor. Therefore, the refrigeration industry in various countries around the world has invested a lot of energy in the research of refrigeration compressors, and new research directions and research results are constantly emerging. Compressor technology and performance levels are advancing rapidly. There are many types of compressors. According to different working principles, refrigeration compressors can be divided into fixed displacement compressors and variable displacement compressors.

In the vapor compression refrigeration system, the refrigeration compressor increases the refrigerant from low pressure to high pressure, and continuously circulates the refrigerant, so that the system continuously discharges internal heat to an environment higher than the system temperature. middle. The refrigeration compressor is the heart of the refrigeration system. The refrigeration system inputs electrical energy through the compressor to discharge heat from a low-temperature environment to a high-temperature environment. The energy efficiency ratio of the refrigeration compressor determines the energy efficiency ratio of the entire refrigeration system. Since the ambient temperature changes frequently, the compressor is in a partial load state most of the time, so the compressor must have energy regulation.

In recent years, with the rapid development of the international refrigeration compressor industry, the concentration of the global compressor market has gradually increased. Leading compressor manufacturers have continuously improved their competitiveness through industry integration, and gradually emerged with the German Industry leading companies such as Zell and Ingersoll Rand of the United States occupy dominant market positions. At the same time, my country's refrigeration compressor industry has also developed rapidly in recent years, driven by downstream demand.

During the 11th Five-Year Plan, the localization rate of complete sets of refrigeration compressor equipment in various major fields of industrial refrigeration in my country has continued to increase, and the demand for refrigeration compressors in cold chain logistics and home appliances has also continued to rise, providing a The development of China's refrigeration compressor industry provides huge business opportunities. From 2008 to 2010, the market demand for refrigeration systems equipped with refrigerant compressors averaged around 50 billion yuan per year. According to cost analysis estimates, the market demand for refrigerant compressors was around 10 billion yuan; refrigeration systems equipped with refrigerant centrifugal compressors The average market capacity is about 19 billion yuan. According to cost analysis estimates, the market capacity of refrigerant centrifugal compressors is about 6 billion yuan.

With the promulgation of my country’s 12th Five-Year Development Plan, the domestic market will provide a broad space for development of the refrigeration compressor industry. It will also provide an unprecedented opportunity for the refrigeration compressor industry to accelerate the improvement of product quality and catch up with world standards. opportunities and challenges. During the 12th Five-Year Plan period, the total demand in my country's cold chain logistics field has further increased compared with the total demand during the 15th and 11th Five-Year Plan periods, coupled with the rapid growth of industrial refrigeration demand and the stable demand of the home appliance market as a guarantee.

It is expected that during the 12th Five-Year Plan period, the size of my country's refrigeration compressor market will maintain a rapid growth rate of more than 10%. At present, there are many refrigeration compressor companies in my country, and most of them are engaged in the production of mid-to-low-end refrigeration compressors. Most companies that produce spiral refrigeration compressors basically rely on imports for their main core components, the double-helical rotor (accounting for more than 25% of the total cost). It is precisely because most domestic companies do not have core technologies and can only provide complete machine products, which has greatly inhibited the development of the domestic refrigeration compressor industry.

Today I will introduce you to the background and development of refrigeration compressors. Do you understand? Refrigeration compressors are the heart of the refrigeration system. When we buy refrigerators, we will see many refrigerators with slogans saying How many years the refrigerator can be used, how good the quality of the refrigerator is, etc. to attract consumers, and the frost-free refrigerator we often say is actually a fan installed behind the refrigerator.