| 摘要 |
PURPOSE:To run indoor unit with heating and cooling mode separately in individual rooms at the same time, by switching four way type valve or controlling opening and closing or the degree of opening of outdoor expansion valve, indoor expansion valve, the first and second two way type valve and the two way type valve for bypassing according to the running mode of outdoor unit. CONSTITUTION:Indoor units 9a, 9b, 9c are connected in parallel with outdoor machine 1 through refrigerant branch unit 10 to constitute a refrigerating cycle. Outdoor expansion valve 6 is connected with indoor heat exchangers 7a, 7b, 7c through first two way type valves 13a, 13b, 13c and the four way type valve 3 is connected with indoor heat exchangers 7a, 7b, 7c through second two way type valves 14a, 14b, 14c. Outdoor expansion valve 6 is connected with the first two way type valves 13a, 13b, 13c and indoor expansion valves 16a, 16b, 16c through two way type valve 15 for bypassing. Further, switch the four way type valve 3 according to the running mode of outdoor unit 1 or control the opening and closing or the degree of opening of outdoor expansion valve 6, indoor expansion valve, the first and second two way type valves and two way type valve 15 for bypassing. |
