Patent ID: 6918264

Claim:
A multi-type air conditioner comprising: an outdoor unit having a compressor, an outdoor heat exchanger, a flow path control valve for controlling a flow path of refrigerant from the compressor, an outdoor expansion device for expanding liquid refrigerant entering the outdoor expansion device in a condensed state via indoor units and for providing the expanded refrigerant to the outdoor heat exchanger when an area is heated, and an outdoor unit piping system; a plurality of indoor units, each indoor unit having an indoor expansion device, an indoor heat exchanger, and an indoor piping system; a distributor for selectively distributing refrigerant from the outdoor unit to at least one of the indoor units and returning refrigerant to the outdoor unit according to operation modes; a super cooling heat exchanger that super cools refrigerant condensed at the outdoor heat exchanger or the indoor heat exchangers and flowing to the indoor expansion devices or to the outdoor expansion device; a supplementary super cooling heat exchanger mounted on a refrigerant pipeline between the super cooling heat exchanger and the outdoor expansion device; a first supplementary guide pipe connected between the refrigerant pipeline and one end of the supplementary super cooling heat exchanger; a supplementary super cooling expansion device on the first supplementary guide pipe; and a second supplementary guide pipe connected between the inlet of the compressor and the other end of the supplementary super cooling heat exchanger.