| 摘要 |
PROBLEM TO BE SOLVED: To secure the return of air from a Japanese-style room without spoiling the atmosphere of the Japanese-style room. SOLUTION: Each of return ports 90(90a and 90b) is provided on a wall 91 of a Japanese-style room and the wall of a passageway adjacent to the Japanese-style room. At this time, the return ports 90 are provided so that each return port 90 is in a different level. Then, air in the Japanese-style room is allowed to flow from the return port 90a provided on the wall 91 of the Japanese-style room to the inside space of the wall, and is allowed to flow out of the return port 90b provided on the wall 91 of the passageway for returning to an indoor machine.
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