Air conditioner

An air conditioner, comprising:

• an outdoor unit that includes a compressor that compresses refrigerant and an outdoor heat exchanger in which refrigerant and external air exchange heat;
• and
• a plurality of indoor units connected with the outdoor unit through a plurality of refrigerant pipes and that adjusts a temperature of the air flowing into an interior space, wherein the plurality of indoor units each includes:
• a case having a supply channel therein through which external air flows into the interior space;
• a first heat exchanger disposed in the supply channel and in which the air and refrigerant exchange heat;
• a second heat exchanger disposed at a downstream side of the first heat exchanger in the supply channel, and in which the air and refrigerant exchange heat;
• and
• a refrigerant distributor connected with the plurality of refrigerant pipes and that sends refrigerant flowing from the outdoor unit to the first heat exchanger or the second heat exchanger, wherein the refrigerant distributor includes:
• a liquid pipe through which liquid-state refrigerant flows, wherein the liquid pipe is connected to a first side of each of the first heat exchanger and the second heat exchanger;
• a first gas pipe through which gas-state refrigerant discharged from the compressor flows, wherein the first gas pipe is connected to a second side of each of the first heat exchanger or the second heat exchanger;
• a second gas pipe through which gas-state refrigerant flowing into the compressor flows, wherein the second gas pipe is connected to the second side of the first heat exchanger;
• a first gas pipe valve disposed on the first gas pipe and that sends refrigerant flowing through the first gas pipe to the first heat exchanger or the second heat exchange;
• and
• a second gas pipe valve disposed on the second gas pipe and that opens and closes the second gas pipe, wherein the first gas pipe is divided into a 1-1 gas pipe connected to the first heat exchanger and a 1-2 gas pipe connected to the second heat exchanger;
• wherein the first gas pipe valve includes a 1-1 valve disposed on the 1-1 gas pipe and that opens and closes the 1-1 gas pipe, and a 1-2 valve disposed on the 1-2 gas pipe and that opens and closes the 1-2 gas pipe, wherein the second gas pipe includes a first parallel gas pipe and a second parallel gas pipe that are divided and joined in the refrigerant distributor, wherein the second gas pipe valve includes a first parallel gas pipe valve that opens and closes the first parallel gas pipe and a second parallel gas pipe valve that opens and closes the second parallel gas pipe, wherein the 1-1 gas pipe is connected to the first parallel gas pipe, and wherein the 1-1 gas pipe is connected to the first heat exchanger through the second gas pipe.