| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioning apparatus in which the so-called gas deficiency is prevented. SOLUTION: An air conditioning apparatus 30 is adapted such that an outdoor unit 1 equipped with a compressor 2 and an outdoor heat exchanger 3, and indoor units 5a, 5b, 5c equipped with indoor heat exchangers 6a, 6b, 6c are connected through an inter-unit piping 10, one end of the outdoor heat exchanger is optionally branched and connected with a discharge tube 7 and a suction tube 8 of the compressor, and the inter-unit piping includes a high pressure gas tube 11 connected with the discharge tube, a low pressure gas tube 12 connected with the suction tube, and a liquid tube 13 connected with the other end of the outdoor heat exchanger with one end of the indoor heat exchanger connected with the high pressure gas tube and the low pressure gas tube and with the other end connected with the liquid tube. In the air conditioning apparatus, a bypass means 100 is provided between the high pressure gas tube 11 and the liquid tube 13 for communicating the insides of both tubes following a pressure difference in both tubes, and control means 101 is provided for drawing an opening of an outdoor expansion valve 27 upon all indoor units 5 in cooling operation in order to lower the pressure in the liquid tube 13. |
