Air conditioner

An air conditioner for feeding conditioned air, the air conditioner comprising:

• a fan;
• and
• an air conditioning case that defines a ventilation space through which air passes, wherein
• the fan includes a top plate portion, a bottom plate portion, and a plurality of blade portions located between the top plate portion and the bottom plate portion,
• the fan is disposed in the ventilation space, and rotates to draw the air in a direction along a rotation axis and to blow out the air in a centrifugal direction around the rotation axis,
• the ventilation space includes a case introduction port through which air outside the air conditioning case is introduced,
• the air conditioning case includes a partition plate, an inner guide plate, and an outer guide plate,
• the partition plate partitions a part of the ventilation space extending from the case introduction port into a first passage and a second passage,
• the ventilation space includes
• a fan space that communicates with the first passage and the second passage, the fan being disposed in the fan space,
• a first discharge port that communicates with the fan space, the air that flows through the first passage and the fan space flowing out of the air conditioning case through the first discharge port,
• a second discharge port that communicates with the fan space, the air that flows through the second passage and the fan space flowing out of the air conditioning case through the second discharge port,
• the top plate portion defines a fan introduction port through which the air passing through the first passage and the air passing through the second passage are introduced into a space surrounded by the bottom plate portion and the top plate portion,
• the inner guide plate is disposed in the fan space, the inner guide plate being closer to the rotation axis than the plurality of blade portions are to in a radial direction around the rotation axis,
• the inner guide plate has an inner guide plate surface along which the air passing through the first passage and blown out from the fan is guided toward the first discharge port or the outer guide plate,
• the outer guide plate is disposed in the fan space, the outer guide plate being farther from the rotation axis than the plurality of blade portions are from in the radial direction,
• the outer guide plate has an outer guide plate surface along which the air guided by the inner guide plate surface is guided toward the first discharge port,
• a plurality of predetermined cross sections are taken along a direction perpendicular to the rotation axis,
• each of the plurality of predetermined cross sections includes the fan,
• the plurality of predetermined cross sections are different in positions in the direction along the rotation axis each other,
• in each of the plurality of predetermined cross sections, a reference line is a line that connects the rotation axis and an outer guide end which is one of ends of the outer guide surface closer to the rotation axis in the radial direction,
• in each of the plurality of predetermined cross sections, a guide line is a line that connects the rotation axis and an inner guide end which is one of ends of the inner guide surface closer to the outer guide end in the radial direction,
• in each of the plurality of predetermined cross sections, a phase difference angle is defined between the guide line and the reference line in a rotation direction of the fan, and
• the phase difference angles of the plurality of predetermined cross sections are different from each other.