| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the possibility of heat injury by lowering the temperature of air passing through a radiator and a condenser, disposed overlapped longitudinally and entering inside an engine room. SOLUTION: A condenser 10 is adapted, such that a heat exchange area 11 between first and second galleries 14, 16 are divided into an upstream side cooling section 12 and a downstream side cooling section 13, and a refrigerant flows in the direction indicated by an arrow A from the first gallery, through a main cooling section and returns at the second gallery and flows through a sub-cooling section as indicated by an arrow B. A radiator 30 is adapted, such that a heat exchange area 31 between left and right first tanks 34 and a second tank 36 is divided into a main cooling section 32 and a sub-cooling section 33. Cooling water flows through the main cooling section from the first tank, as indicated by an arrow C with a part thereof being sent to a water pump from a first cooling water outlet 48 of the second tank. A remaining section flows oppositely, through the sub-cooling section from the second tank as indicated by an arrow D and is further cooled. Since the flow directions through the downstream side cooling section and the sub-cooling section are same, temperature of air passing therethrough is sharply lowered.
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