Cooling device

Abstract

An exemplary embodiment of the present invention provides a cooling device including: a tub which is disposed above a cooling target and has an accommodation space that accommodates a coolant supplied from the outside; and spray nozzles which are installed in the accommodation space, each of the spray nozzles having one or more coolant inlet ports into which the coolant flows, the spray nozzles being disposed to be spaced apart from a central portion of the accommodation space toward an edge portion of the accommodation space, and the spray nozzles spraying the coolant, which flows in through the coolant inlet port, toward the cooling target, in which heights of the coolant inlet ports are in proportion to distances at which the spray nozzles are spaced apart from the central portion of the accommodation space.

1 . A cooling device comprising:
 a tub which is disposed above a cooling target and has an accommodation space that accommodates a coolant; and   spray nozzles which are installed in the accommodation space, each of the spray nozzles having one or more coolant inlet ports into which the coolant flows, the spray nozzles being disposed to be spaced apart from a central portion of the accommodation space toward an edge portion of the accommodation space, and the spray nozzles spraying the coolant toward the cooling target,   wherein heights of the coolant inlet ports are in proportion to distances at which the spray nozzles are spaced apart from the central portion of the accommodation space.   
     
     
         2 . The cooling device of  claim 1 , wherein:
 the tub has a spray plate having multiple installation holes which are disposed to be spaced apart from one another and each have an internal screw thread formed on an inner circumferential surface thereof, and   the spray nozzle has an external screw thread which is formed on an outer circumferential surface of the spray nozzle and fastened to the internal screw thread of the installation hole by a threaded connection, such that a position of the spray nozzle is adjusted by a rotation of the spray nozzle.   
     
     
         3 . The cooling device of  claim 1 , wherein:
 the spray nozzles are arranged in a direction in parallel with a width direction of the cooling target.   
     
     
         4 . The cooling device of  claim 2 , wherein:
 the spray nozzle includes:   a nozzle body which has the external screw thread, is disposed to be approximately perpendicular to the spray plate, and has a spray flow path formed therein and a spray port formed at a lower end of the spray flow path; and   a nozzle cap which is fastened to an upper portion of the nozzle body and has the multiple coolant inlet ports.   
     
     
         5 . The cooling device of  claim 4 , wherein:
 the nozzle cap is fastened to the nozzle body by a threaded connection, such that a height of the coolant inlet port is adjustable by a rotation of the nozzle cap.   
     
     
         6 . The cooling device of  claim 2 , wherein:
 the spray plate has auxiliary installation holes which are disposed to be spaced apart from one another while penetrating one surface facing the cooling target and positioned at a central portion of the accommodation space, and   the cooling device further includes an auxiliary spray nozzle having auxiliary inlet ports which are in communication with the auxiliary installation holes and disposed to be lower than a height of the coolant inlet port.   
     
     
         7 . The cooling device of  claim 1 , wherein:
 the tub includes:   an inner tub which has side plates disposed in parallel with a direction in which the spray nozzles are spaced apart from one another; and   a supply pipe which supplies the coolant into the inner tub, and   the side plate has a central portion and an edge portion having an upper end higher than an upper end of the central portion.   
     
     
         8 . The cooling device of  claim 7 , wherein:
 a height of the upper end of the edge portion is gradually increased toward an edge portion of the accommodation space.   
     
     
         9 . The cooling device of  claim 7 , further comprising:
 meshes which are fixedly installed on an inner circumferential surface of the inner tub and disposed in parallel with a direction in which the spray nozzles are spaced apart from one another.   
     
     
         10 . The cooling device of  claim 9 , wherein:
 the meshes have an upper mesh and a lower mesh positioned below the upper mesh.   
     
     
         11 . The cooling device of  claim 9 , wherein:
 the supply pipe is installed at a center of the accommodation space, and the meshes are disposed at both sides of the supply pipe and in contact with the supply pipe.   
     
     
         12 . The cooling device of  claim 2 , wherein:
 the tub includes:   an inner tub which has side plates disposed in parallel with a direction in which the accommodation space and the spray nozzles are spaced apart from one another; and   an outer tub which is disposed outside the inner tub and surrounds the inner tub, and   the spray plate is disposed between the inner tub and the outer tub and disposed to be higher than a lower end of the inner tub and a lower end of the outer tub.   
     
     
         13 . The cooling device of  claim 12 , wherein:
 the tub further has an auxiliary accommodation space which is positioned between the inner tub and the outer tub and formed above the spray plate.   
     
     
         14 . A cooling device comprising:
 a tub which is disposed above a cooling target and has an accommodation space that accommodates a coolant supplied from the outside; and   spray nozzles which are installed in the accommodation space and have coolant inlet ports into which the coolant selectively flows in accordance with a level of the coolant, and spray ports through which the coolant is sprayed toward the cooling target.   
     
     
         15 . The cooling device of  claim 14 , wherein:
 heights of the coolant inlet port are gradually increased in a width direction of the cooling target.   
     
     
         16 . The cooling device of  claim 14 , wherein:
 the tub has an inner accommodation space into which the coolant is supplied, and an outer accommodation space into which the coolant overflowing from the inner accommodation space flows, and the spray nozzles are installed in the outer accommodation space.   
     
     
         17 . The cooling device of  claim 16 , wherein:
 the tub has a side plate which defines the inner accommodation space and the outer accommodation space, and a height of a central portion of the side plate is lower than heights of edge portions positioned at both sides of the central portion.   
     
     
         18 . The cooling device of  claim 17 , wherein:
 a height of the side plate in the width direction of the cooling target is higher than heights of the spray nozzles.   
     
     
         19 . The cooling device of  claim 14 , further comprising:
 an auxiliary spray nozzle which is installed at a center of the accommodation space and has auxiliary inlet ports disposed to be lower than heights of the coolant inlet ports,   
       wherein the spray nozzles are disposed at both sides of the auxiliary spray nozzle.