Indoor unit for air conditioning device

An indoor unit of an air conditioner, the indoor unit comprising:

• a casing having an inflow port formed on a rear side of the casing, and an outflow port formed on a front side of the casing;
• a cross-flow fan arranged in the casing and having a fan rotor rotating about a center axis of the cross-flow fan and a tongue portion extending in an axial direction along an outer periphery of the fan rotor below the fan rotor and forward of the center axis to define a suction port, the cross-flow fan forming in the casing an air flow directed from the inflow port on the rear side of the casing to the outflow port on the front side of the casing;
• and
• a heat exchanger arranged upstream of the cross-flow fan in the casing in a direction of the air flow to heat or cool the air passing through the heat exchanger, the heat exchanger having an inclined portion which is inclined to be positioned further downward toward a front side in a front-to-back direction, wherein
• the inflow port is formed at a rear surface of the casing, and
• the heat exchanger is arranged such that a front end of the inclined portion defined by a corner of the entire heat exchanger is located below the fan rotor, and between a foremost portion of the fan rotor and the center axis of the fan rotor in the front-to-back direction,
• the heat exchanger has first and second bent portions located rearward of the fan rotor in the front-to-back direction, and is formed such that first, second, and third heat exchange sections formed by the first and second bent portions are arranged at mutually different angles to surround the suction port,
• the first heat exchange section and the second heat exchange section behind the first heat exchange section are the inclined portion which is inclined to be positioned further downward toward the front side in the front-to-back direction,
• an end of the third heat exchange section abuts on a sealing portion of a housing of the cross-flow fan, and
• the end of the third heat exchange section that abuts on the sealing portion is located at a position vertically overlapping with a front end portion of the second heat exchange section.