The invention discloses a central arithmetic type multi-split air conditioner
system and a
state switching control method of the central arithmetic type multi-split air conditioner
system. The operating states of electronic expansion valves and the operating states of compressors are controlled through a central arithmetic unit, the
operating frequency and the corresponding gear of each compressor are determined so that the total refrigerating capacity output by the central arithmetic type multi-split air conditioner
system can be controlled easily and efficiently, the refrigerating capacity can be reasonably distributed to rooms, and the refrigerating capacity obtained by each room is matched with the
heat load of the room. The central arithmetic unit receives temperature signals of all the rooms, carries out centralized arithmetic
processing, sends instructions to the electronic expansion valves and the compressors of indoor units, and has control over execution behaviors of the electronic expansion valves and execution behaviors of the compressors. According to the central arithmetic type multi-split air conditioner system and the
state switching control method of the central arithmetic type multi-split air conditioner system,
mutual influence among the indoor units is taken into overall consideration, the fluctuation range of the indoor temperature is reduced, the probability that the compressors are in the shutdown state in the operating process of the central arithmetic type multi-split air conditioner system is greatly reduced, loss caused by frequent starting and frequent shutdown of the compressors is reduced, and the fluctuation, caused by starting and shutdown of the compressors, of the indoor temperature can be further reduced.