Air conditioning system.

摘要

An air conditioning system for multiple rooms, comprising: an outdoor unit (1) including a variable delivery compressor (2), a four way reversing valve (3) and an outdoor heat exchange unit (4a, 4b); and two main connecting pipes (17, 18) composed of a high pressure main pipe and a low pressure main pipe to connect between outdoors and indoors; characterized in that it further comprises: a distributive controller (19) which is connected to the main connecting pipes (17, 18) to divide them into a high pressure pipe (20), a low pressure pipe (21) and a medium pressure pipe (22) therein; a plurality of indoor units (6a, 6b, 6c) which include indoor heat exchangers (8a, 8b, 8c), respectively, which are one end connected to the medium pressure pipe (22) through electronic expansion valves (12a, 12b, 12c), respectively, and which are the other end selectively connected to either one of the high pressure pipe (20) and the low pressure pipe (21), respectively; detecting means for detecting either one of refrigerant temperatures and reftrigerant pressures; and control means for carrying out a predetermined control based on such detection. <IMAGE>