Patent ID: 6880356

Claim:
A multi-air conditioner comprising: an outdoor unit installed at an outdoor location, and having therein a compressor, a refrigerant flow controller connected to a discharge outlet of the compressor and being configured to guide refrigerant according to an operation condition, an outdoor heat exchanger connected with the refrigerant flow controller, and at least flow controller and the heat exchanger being connected by piping; a plurality of indoor units installed at respective indoor rooms and provided with an indoor heat exchanger having one end connected with a distributor, and an electronic expansion valve having one end connected to the indoor heat exchanger and another end connected with the distributor; and the distributor being positioned between the outdoor unit and the indoor units and being configured to, selectively guide the refrigerant introduced from the outdoor unit to the plurality of indoor units according to the operation condition and to guide the refrigerant passing through the indoor units, to the outdoor unit, the piping including a first connection pipe having one end connected to the refrigerant flow controller, the other end connected to the distributor, and an outdoor heat exchanger is connected between the one end and the other end of the first connection pipe, a second connection pipe of having one end connected with the refrigerant flow controller and being configured to guide the compressed refrigerant to the distributor, and a third connection pipe connecting a suction inlet of the compressor with the distributor and having a mid portion connected to the refrigerant flow controller and being configured to guide a low pressure/vapor-phase refrigerant to the compressor.