Wall-mounted air conditioner

A wall-mounted air conditioner, which in heating mode creates hot air comprising:

• an indoor unit, wherein the indoor unit comprises a front housing and a rear housing forming a housing, the housing is provided with main air intake portions, heat exchangers are disposed inside the housing, both orthographic projections of the front housing and the rear housing are circular or approximately circular, the rear housing is located within a limiting area of the front housing, a surface of the front housing is an arc surface in which an upper portion and a lower portion contract backwards and a middle portion protrudes forwards, and an air outlet is formed in a lower portion of the front housing, wherein the rear housing comprises a rear plate and a side wall, the front housing is connected to the side wall, and the main air intake portions are disposed on the side wall;
• wherein the main air intake portions comprise multiple air inlets that are not connected to each other;
• and wherein a non-hot exchange air inlet is formed on the rear housing at a position corresponding to the air outlet, an air delivery apparatus is disposed inside the housing, the air delivery apparatus comprises a plurality of air-duct bodies each having front and rear openings, the a plurality of air-duct bodies are sequentially arranged next to one another to form a throughway air passage therethrough, the throughway air passage connects the air outlet and the non-hot exchange air inlet, an at least one hot exchange air passage is formed between two adjacent air-duct bodies of the a plurality of air-duct bodies, a volute and a centrifugal fan located inside the volute are disposed inside the housing and above the air delivery apparatus, an air output portion of the volute faces the hot exchange air passage, the air output portion of the volute includes a surrounding portion that extends to the air delivery apparatus and that surrounds the at least one hot exchange air passages, and a plurality of air mixed cavities are formed between the surrounding portion and the at least one hot exchange air passages.