Air-conditioning apparatus

An air-conditioning apparatus comprising:

• a centrifugal air-sending device including a fan and a scroll casing, the fan including a main plate that is driven to rotate and a plurality of blades provided at a circumferential edge portion of the main plate, the scroll casing accommodating the fan and including a circumferential wall and a side wall, the circumferential wall being formed in the shape of a scroll, the side wall having a suction port that communicates with a space defined by the main plate and the plurality of blades;
• a heat exchanger through which an air current generated from the centrifugal air-sending device passes;
• and
• a housing that houses the centrifugal air-sending device and the heat exchanger, and has a housing suction port through which air is sucked into the centrifugal air-sending device and a housing air outlet through which air that is sent from the centrifugal air-sending device and passes through the heat exchange flows out from the housing,
• wherein the scroll casing has:
• a tongue portion located at a position from which the circumferential wall extends to be formed in the shape of the scroll, the tongue portion being configured to divide a flow of air blown from the fan;
• and a discharge portion having a discharge port through which air blown from the fan flows out,
• wherein the housing has an opening wall portion having the housing suction port, and the housing suction port is located on a line crossing a direction in which the discharge port extends, and
• wherein
• where as viewed in a direction along a rotation axis of the fan,
• in a radial direction perpendicular to the rotation axis, a trailing edge of one of the plurality of blades that is located closest to a wall portion of the housing is defined as a first trailing edge portion, and a leading edge of one of the plurality of blades that is located closest to the tongue portion is defined as a first leading edge portion,
• a straight line that passes through the rotation axis and the first trailing edge portion is defined as a first straight line, and a straight line that is parallel to the first straight line and passes through the first leading edge portion is defined as a second straight line, and
• a region that forms part of the housing suction opening that is close to the tongue portion with reference to the rotation axis is defined as a first region,
• a boundary portion of the first region that is located closest to the tongue portion is located between the first straight line and the second straight line,
• each of the plurality of blades includes
• an inner circumferential end located close to the rotation axis in the radial direction,
• an outer circumferential end located closer to an outer circumference than the inner circumferential end in the radial direction,
• a sirocco blade portion including the outer circumferential end and formed as a forward-swept blade portion having a blade outlet angle of greater than 90 degrees, and
• a turbo blade portion including the inner circumferential end and formed as a backward-swept blade portion,
• the first leading edge portion is a leading edge of the sirocco blade portion, and
• the turbo blade portion and the sirocco blade portion are formed integrally with each other.