| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioning device capable of sufficiently suppressing heat loss and having a simple structure.SOLUTION: An air conditioning device includes: a refrigeration cycle 90, a four-way valve 5 provided with a high-pressure port 50 connected to an outlet side of a compressor 1, a first port 51 connected to an indoor heat exchanger 2, a second port 52 connected to an outdoor heat exchanger 4, and a third port 53 connected to an inlet side of a compressor 1, communicating the high-pressure port 50 and the second port 52, and communicating the first port 51 and the third port 53 in a cooling operation, and communicating the high-pressure port 50 and the first port 51, and communicating the second port 52 and the third port 53 in a heating operation; a check valve 6 disposed in a pipe between the indoor heat exchanger 2 and the first port 51; a bypass pipe 20 connecting a pipe between an outlet of the compressor 1 and the high-pressure port 50 and a pipe between the indoor heat exchanger 2 and the check valve 6; and a two-way valve 20V disposed in the bypass pipe 20 and permitting circulation only in heating.SELECTED DRAWING: Figure 1 |
