Indoor unit of air conditioner

Abstract

There is provided an indoor unit of an air conditioner to suppress the decrease in the amount of heat exchange between a refrigerant and air due to pressure loss. In the indoor unit of the air conditioner, a second heat exchange part has a high wind velocity region where a wind velocity of air passing through the second heat exchange part is relatively high and a low wind velocity region where the wind velocity of air is relatively low, and the high wind velocity region is located above the low wind velocity region in a direction of gravity. At least one first heat transfer tube is disposed in the high wind velocity region, and at least one second heat transfer tube is disposed in the low wind velocity region. A first header is connected to each of the first heat transfer tube and the second heat transfer tube. The first header has a first internal space to which the first heat transfer tube and the second heat transfer tube are commonly connected. When using a heat exchanger as a condenser, the refrigerant flowed out from a first heat exchange partflows into the first internal space of the first header, and then, the refrigerant flows into each of the first heat transfer tube and the second heat transfer tube from the first internal space.