| 摘要 |
PROBLEM TO BE SOLVED: To provide a reserve tank capable of improving water supplying efficiency of cooling water even when a water return plate is integrally formed. SOLUTION: This reserve tank is provided with a tank part 120 for storing the cooling water supplied from a water supply port 110 for supplying the cooling water, a lid body 130 for closing the water supply port 110, a delivery pipe 140 provided on the lid body 130 and having an end opened to the tank part 120 and the other end opened to the outside, and the water return plates 150 oppositely arranged so as to cover an end opening 141 of the delivery pipe 140 and integrally protruding from an inner peripheral surface of the water supply port 110 or the tank part 120. The water return plates 150 are provided on different levels from an inside of the tank part 120 to the end opening 141 side and protrude to opposite directions.
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