US 12,454,905 B2
Reserve tank and cooling system including the same
Yuichiro Kimura, Susono (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Nov. 13, 2023, as Appl. No. 18/507,427.
Claims priority of application No. 2023-016746 (JP), filed on Feb. 7, 2023.
Prior Publication US 2024/0263894 A1, Aug. 8, 2024
Int. Cl. F01P 11/02 (2006.01); B60K 11/02 (2006.01)
CPC F01P 11/029 (2013.01) [B60K 11/02 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A reserve tank comprising:
a tank body including a storage portion, a communication portion, a first connection pipe, and a second connection pipe,
the storage portion storing a liquid coolant,
the communication portion being provided above the storage portion and connecting an internal space and an external space of the storage portion, and
the liquid coolant flowing into the storage portion from a coolant circuit through the first connection pipe and flowing out of the storage portion to the coolant circuit through the second connection pipe;
a pressure control valve that is provided in the communication portion, the pressure control valve being configured to open to allow gas from the external space to flow into the internal space in a case where an internal pressure in the internal space is lower than an external pressure in the external space;
a gas pipeline that includes a first path extending downward from the communication portion in the internal space of the storage portion and being connected to the external space through the pressure control valve, a folded path extending upward from a lower end of the first path in a folded-back manner, and a second path extending upward from the folded path and including an open end, the gas pipeline being configured to allow gas to flow in the first path, the folded path, and the second path; and
a hygroscopic material provided in the folded path.