| 摘要 |
PROBLEM TO BE SOLVED: To determine the direction of a refrigerant flowing into an indoor expansion valve in cooling, and to reduce refrigerant noise generated in passing through the indoor expansion valve regardless of an operating state of an indoor unit in heating. SOLUTION: In the indoor unit of the multi-room type air conditioner, a front panel 3 provided with suction openings 3a, 3b its front face and top face, and a supply opening 3c at its lower part is mounted on a base 2. The base 2 is provided with heat exchangers 4, 4a vertically arranged in stages on its front face, and a cross flow fan 5 is rotatably journaled at its back face. The indoor expansion valve 6, and a first refrigerant pipe 7 and a second refrigerant pipe 8 disposed at the front and back of the indoor expansion valve are disposed in a back space formed by a constricted part 2a of the base 2, the first refrigerant pipe 7 is used as a trap in which the refrigerant of liquid phase easily accumulates, and is connected with the indoor expansion valve 6 in an opened state, disposed in the indoor unit of which an operation is stopped in heating, and the second refrigerant pipe 8 is positioned to determine the direction of the refrigerant flowing into the indoor expansion valve 6 laterally or downward in cooling. COPYRIGHT: (C)2008,JPO&INPIT
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