Cooler

Abstract

A cooler includes a cold plate to absorb heat from a heat source into coolant, a housing filled with the coolant and located on an upper side of the cold plate in a first direction X, and a partition located on a lower side in the housing. An inflow port and an outflow port are provided on one side in a second direction Y perpendicular or substantially perpendicular to the first direction X. The cold plate includes a first plate chamber and a second plate chamber in which the coolant flows between the cold plate and the partition. The partition includes a first through-hole communicating with the first plate chamber. The first plate chamber is farthest from the inflow port to the other side in the second direction Y. The housing includes a communication flow path allowing the inflow port to communicate with the first through-hole.

What is claimed is: 
     
         1 . A cooler comprising:
 a cold plate to absorb heat from a heat source into coolant;   a housing filled with the coolant and located on an upper side of the cold plate in a first direction; and   a partition located on a lower side in the housing; wherein   the housing includes:
 an inflow port through which the coolant flows into the housing; and 
 an outflow port through which the coolant flows out of the housing; 
   the inflow port and the outflow port are provided on one side in a second direction perpendicular or substantially perpendicular to the first direction;   the cold plate includes a first plate chamber and a second plate chamber in which the coolant flows between the cold plate and the partition;   the partition includes a first through hole communicating with the first plate chamber;   the first plate chamber is farthest from the inflow port to another side in the second direction; and   the housing includes a communication flow path allowing the inflow port to communicate with the first through-hole.   
     
     
         2 . The cooler according to  claim 1 , wherein
 the housing includes a tank chamber;   the second plate chamber is located on a lower side in the first direction of the tank chamber;   the partition includes a second through-hole allowing the first plate chamber to communicate with the tank chamber;   the inflow port, the communication flow path, the first plate chamber, the tank chamber, the second plate chamber, and the outflow port communicate with each other in this order; and   the communication flow path bypasses the tank chamber and extends from the one side to the another side in the second direction.   
     
     
         3 . The cooler according to  claim 2 , wherein
 the first through-hole is located at a center of the first plate chamber; and   the communication flow path is bent in a third direction perpendicular or substantially perpendicular to the first direction and the second direction on the other side in the second direction.   
     
     
         4 . The cooler according to  claim 2 , wherein
 the partition includes a third through-hole through which the tank chamber communicates with the second plate chamber;   the cold plate includes a plurality of fins protruding toward the tank chamber; and   the first through-hole and/or the third through-hole overlap the plurality of fins in the first direction.   
     
     
         5 . The cooler according to  claim 4 , wherein
 the third through-hole extends in the second direction; and   the plurality of fins extend in a third direction.   
     
     
         6 . The cooler according to  claim 2 , further comprising:
 a pump to circulate the coolant; wherein   the housing includes a pump chamber in which the pump is provided;   the pump chamber is provided on the one side in the second direction with respect to the tank chamber; and   the pump chamber is between (i) the first plate chamber and the second plate chamber and (ii) the outflow port, to communicate with the first and second plate chambers, and the outflow port.   
     
     
         7 . The cooler according to  claim 1 , wherein
 the housing opens on a lower side in the first direction;   the partition is separate from the housing, and is located in an opening of the housing;   the partition includes a partition wall extending downward in the first direction and being in contact with the cold plate; and   the partition wall defines each of the first plate chamber and the second plate chamber.