WALL-MOUNTED AIR CONDITIONER INDOOR UNIT

The present invention discloses a wall-mounted air conditioner indoor unit, including a front housing and a rear housing forming a housing of the indoor unit, where the housing is provided with main air intake portions, a lower portion of the front housing is provided with a mixed air outlet, the rear housing is provided with a non-hot exchange air inlet, a flow air apparatus is disposed inside the housing, a size of an upper portion of the hot exchange air passage is greater than a size of a lower portion of the hot exchange air passage, thereby forming a passage structure that is wide at the upper portion and narrow at the lower portion, a volute and a centrifugal fan located inside the volute are disposed inside the housing and above the flow air apparatus, an air exhaust portion of the volute faces the hot exchange air passage of the flow air apparatus, the air exhaust portion of the volute is further provided with a surrounding portion that extends to the flow air apparatus and that surrounds the hot exchange air passages, and an air mixed cavity is disposed between the surrounding portion and the hot exchange air passages. The indoor unit not only can exhaust gentle mixed air having a large air volume and a suitable temperature but also can blow the mixed air out downwards, so as to improve flowability and temperature adjustability of space air when the wall-mounted air conditioner indoor unit is used.