| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner having a refrigeration cycle principally employing inner high pressure type compressors in which rising characteristics of heating operation are enhanced. SOLUTION: At the time of starting heating operation, second, fifth and fourth on/off valves b, e, d are opened while first, third and sixth on/off valves a, c, f are closed. A compressor 1 is rendered inner low pressure type by delivering refrigerant sucked into a compressing section sequentially through a second suction pipe 8, a motor chamber 4, a first bypath 11 and a first suction pipe 7 from a second delivery pipe through a delivery chamber.
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