Click to learn more +
Contact Us/ CONTACT US
Service Hotline
Building 57, No. 128, Bridge Road, Kangqiao Town, Pudong New Area, Shanghai
Multi-compressor technology with refrigeration system design
Classification: Technical Data
Time：2017-09-26 20:20
With the continuous improvement of consumers' requirements for air conditioners, variable energy output has become one of the most important and potential technologies after health, energy saving and intelligence. At present, the air-conditioning industry at home and abroad can better solve the above functions at the same time there are two main technologies: frequency conversion technology and multi-compressor technology. The core of frequency conversion technology is the control system, but its materials and research and development costs are high, which will inevitably lead to high prices of frequency conversion products and low consumer purchases. Instead, the core of multi-compressor technology lies in the design of the refrigeration system, where manufacturers are able to master the technology quickly and can offer lower prices with a low-cost strategy.
With the continuous improvement of consumers' requirements for air conditioners, variable energy output has become one of the most important and potential technologies after health, energy saving and intelligence. At present, the air-conditioning industry at home and abroad can better solve the above functions at the same time there are two main technologies: frequency conversion technology and multi-compressor technology. The core of frequency conversion technology is the control system, but its materials and research and development costs are high, which will inevitably lead to high prices of frequency conversion products and low consumer purchases. On the contrary, the core of multi-compressor technology lies in the design of the refrigeration system. Manufacturers can master the technology quickly and can launch lower-priced products with low-cost strategies, which greatly improves consumer acceptance.
The multi-compressor air-conditioning system was first used in large-scale central air-conditioning and commercial air-conditioning. Since these two types of air conditioning systems are not for ordinary home users, the main purpose of their application is not to generate energy. With the continuous popularization of household air conditioners and the continuous improvement of users' functional requirements for air conditioners, multi-compressor technology has been gradually applied to household air conditioners, such as Midea's dual-compressor luxury cabinet machines. Multi compressor air conditioning system has the following characteristics:
① The number of compressors in the air conditioning system is more than one and the connection mode is series or parallel. Among them, the parallel connection method is more commonly used. The specific connection method is to summarize the exhaust ports of all compressors and all return ports.
② In the air conditioning system, each compressor can be separately controlled by "on and off. When all compressors work at the same time, they reach full load operation, then the system draws 100% energy; when some compressors are stopped, the system output energy is reduced. By controlling the shutdown and operation of different numbers of compressors, different energy outputs, the so-called variable energy output, are achieved.
③ The air conditioning system has high energy efficiency when operating under partial load. Because the heat exchanger of the whole system is designed under the premise of full load operation. Therefore, when operating under partial load, the heat exchanger area is relatively large and the energy efficiency is high.
In order to ensure the reliability of operation, the air conditioning system is equipped with efficient oil return and oil distribution system. The most difficult technical problem to solve in the multi-compressor system is the distribution of oil return and lubricating oil. If the oil return is poor or the oil distribution is uneven, the compressor will produce greater wear and tear, and the system life will be significantly reduced.
⑤ Multi-compressor air conditioning system has a large cost advantage in large number of models. At present, in the domestic and foreign compressor markets, the relationship between the capacity and price of compressors with a large number of horses (3 horses and more than 3 horses) is that the price of compressors increases exponentially when the capacity of compressors increases in multiples. Therefore, the multi-compressor system has a certain cost advantage over the ordinary constant speed system or the variable frequency air conditioning system.
Compared with the frequency conversion system, the multi-compressor air-conditioning system has low research and development cost, short cycle, and no electromagnetic interference. Therefore, under the premise of low-cost advantages, its efficiency, comfort, and intelligence can be more concentrated in low-cost air conditioners. Increased consumer recognition can also promote the rapid development and popularization of multi-compressor technology.