Cooler

Abstract

A cooler includes a base plate, fins, a coolant discharge passageway, and a coolant supply passageway. The coolant supply passageway includes a supply passageway partition that divides the coolant supply passageway into a plurality of divided supply passageways. The supply passageway partition extends in a coolant flowing direction within the coolant supply passageway. A first coolant supply port supplies the coolant to a first divided supply passageway that is at least one of the divided supply passageways, from one side along the base plate. A second coolant supply port supplies the coolant to a second divided supply passageway that is at least one of the divided supply passageways, from another side along the base plate. Coolant nozzles jet the coolant toward the fins. The coolant nozzles include a coolant nozzle communicating with the first divided supply passageway and a coolant nozzle communicating with the second divided supply passageway.

What is claimed is: 
     
         1 . A cooler comprising:
 a base plate configured to allow a cooling object to be attached to one surface of the base plate;   a fin attached to an opposite surface of the base plate to the one surface, the fin including a plurality of fins that are arranged parallel to each other so that flat surfaces of the fins face each other;   a coolant discharge passageway communicating with a space defined between the plurality of fins and provided adjacent to the fins;   a coolant supply passageway provided at a side of the opposite surface of the base plate and across the coolant discharge passageway from the fins, the coolant supply passageway extending along the base plate, the coolant supply passageway comprising:
 a supply passageway partition portion configured to divide the coolant supply passageway into a plurality of divided supply passageways, the supply passageway partition portion extending along a coolant flowing direction within the coolant supply passageway; 
 a first coolant supply port configured to supply the coolant to a first divided supply passageway that is at least one of the plurality of divided supply passageways, from one side along the base plate; 
 a second coolant supply port configured to supply the coolant to a second divided supply passageway that is at least one of the plurality of divided supply passageways, from another side along the base plate; and 
 a coolant nozzle configured to jet the coolant toward the fin, the coolant nozzle including the coolant nozzle communicating with the first divided supply passageway and the coolant nozzle communicating with the second divided supply passageway. 
   
     
     
         2 . The cooler according to  claim 1 , wherein the base plate has, on the opposite surface, a curved surface that curves toward the coolant discharge passageway, and the curved surface is configured to guide the coolant to the coolant discharge passageway.