| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a multi-air conditioner capable of heating and cooling simultaneously respectively according to characteristic of each room, and having an exterior unit having an extremely simple structure. <P>SOLUTION: This air conditioner comprises an exterior unit including a passage control valve for controlling a flow passage of a coolant discharged from a compressor, an exterior heat exchanger having one end communicated with the passage control valve, a first bypass pipe having one end connected to a first pipe for communicating the passage control valve with the exterior heat exchanger and the other end connected to the other end of the exterior heat exchanger, and a flow control valve for controlling the quantity of the coolant via the first bypass pipe. The air conditioner includes many interior units equipped respectively with an interior heat exchanger and an interior electronic expansion valve, a distributor for distributing and fluidizing selectively the coolant flowing therein through either of two pipes connected to the exterior unit by control of the passage control valve, to each interior unit according to its operation mode, and then sending the coolant through the other pipe, and a control means for measuring the gas-phase/liquid-phase mixing ratio of the coolant flowing into the distributor, and controlling the opening of the flow control valve. <P>COPYRIGHT: (C)2004,JPO</p> |
