Integrated cooling system

Abstract

An integrated cooling system comprises a first cooling circuit including a first heat exchanger that cools a first cooling medium by a core portion arranged between an inlet tank and an outlet tank; a second cooling circuit including a second heat exchanger installed in the outlet tank to cool a second cooling medium by the first cooling medium, a pressure of the second cooling medium of the second heat exchanger being higher than that of the first cooling medium, in which at a power position that can secure in the first cooling circuit a minimum necessary amount of the first cooling medium for functioning the first cooling circuit, there is provided a fragile portion that is broken when applied with a pressure equal to or larger than a predetermined level thereby to permit communication between the interior and the outside of the outlet tank.

1 . An integrated cooling system characterized by having:
 a first cooling circuit including a first heat exchanger that cools a first cooling medium by a core portion arranged between an inlet tank and an outlet tank;   a second cooling circuit including a second heat exchanger that is installed in either one of the inlet and outlet tanks to cool a second cooling medium by the first cooling medium, a pressure of the second cooling medium of the second heat exchanger being higher than that of the first cooling medium; and   a communicating portion that is placed below the inlet tank or the outlet tank at a position that can secure in the first cooling circuit a minimum necessary amount of the first cooling medium, the communicating portion being able to permit a communication between an interior of either one of the inlet and outlet tanks and the outside of the same when an internal pressure of the communicating portion becomes to or larger than a predetermined pressure.   
     
     
         2 . An integrated cooling system as claimed in  claim 1 , which is further characterized in that the communicating portion is a relief valve. 
     
     
         3 . An integrated cooling system as claimed in  claim 1 , which is further characterized in that the communicating portion is a fragile portion. 
     
     
         4 . An integrated cooling system as claimed in  claim 1 , which is further characterized in that the second heat exchanger is placed below the communicating portion. 
     
     
         5 . An integrated cooling system as claimed in  claim 1 , which is further characterized in that the communicating portion is provided to a side surface of either one of the inlet and outlet tanks in a width direction of the first heat exchanger. 
     
     
         6 . An integrated cooling system as claimed in  claim 1 , which is further characterized in that either one of the inlet and outlet tanks is provided with a guide member by which a direction in which the first cooling medium is discharged from the communicating portion to the outside is changed. 
     
     
         7 . An integrated cooling system as claimed in  claim 1 , which is further provided by having:
 a first abnormal leakage detecting sensor that detects a leakage of the second cooling medium to the first cooling medium; and   an alarming device that gives the alarm when the abnormal leakage detecting sensor detects an abnormal leakage.   
     
     
         8 . An integrated cooling system as claimed in  claim 7 , which is further characterized in that the alarming device is one of a sound apparatus, a horn and an indicator. 
     
     
         9 . An integrated cooling system as claimed in  claim 7 , which is further characterized by having a second abnormal leakage detecting sensor that detects a leakage of the second cooling medium from the second cooling circuit, so that the second abnormal leakage detecting sensor detects the leakage of the second cooling medium, an alarm is given from the alarming device. 
     
     
         10 . An integrated cooling system as claimed in  claim 1 , which is further characterized in that the alarm given when the first abnormal leakage detecting sensor detects the leakage and the alarm given when the second abnormal leakage detecting sensor detects the leakage are made different. 
     
     
         11 . An integrated cooling system as claimed in  claim 1 , which is further characterized in that:
 the first cooling circuit is a cooling circuit for high power system components that uses cooling water as the first cooling medium; and   the second cooling circuit is a cooling circuit for air conditioning that uses a cooling medium for air conditioning as the second cooling medium.