| 摘要 |
PROBLEM TO BE SOLVED: To prevent temperature change of air in a passage even when a cold air passage is adjacent to a warm air passage as in a center-placed layout or semi-center-placed layout. SOLUTION: Plural ribs 16 are formed on the warm air passage side of a case 7 parting a cold air passage from a warm air passage, and on the warm air passage side of the case 7 close to an evaporator 2. As warm air stays between the ribs 16 to act as a heat insulating air layer, heat conductivity is decreased, and heat conductivity is also decreased by a large thickness of the case 7 added by height of the rib 16 at the part of the rib 16. Nonconformity of warm air flowing in a foot duct 8 cooled by cold air or the evaporator 2 can thus be restricted. Different from the case where the foot duct 8 is provided as a pipe to be isolated from the case 7 as a measure to temperature fall of warm air, an air conditioning unit can be miniaturized. |
