Heat exchanger

Abstract

A heat exchanger, which is able to improve heat transmission function and reduce distances between fins to improve heat exchanging function and reduce a size by coating surfaces of the fins with certain materials to make condensate water attached on the surfaces of the fins discharged smoothly, comprises fins arranged with certain gaps therebetween to flow the air; and a tube, through which the fluid passes, installed to penetrate the fins, and the fins are arranged so that one surfaces treated by hydrophilic material and the other surfaces treated by water repellent material face each other with certain gaps therebetween.

What is claimed is:  
     
         1 . A heat exchanger comprising: 
 fins disposed with certain gaps therebetween so that air passes through; and    a tube, through which fluid passes, installed to penetrate the fins,    wherein the fins are arranged so that one surfaces thereof on which a hydrophilic material is treated and the other surfaces thereof on which a water repellent material is treated face each other.    
     
     
         2 . The heat exchanger of  claim 1 , wherein the fins include first fins having both surfaces treated by the water repellent material and second fins having both surfaces treated by the hydrophilic material, and these first and second fins are arranged sequentially.  
     
     
         3 . The heat exchanger of  claim 2 , wherein the first fins have first coating layers on both surfaces thereof by applying the water repellent material, and the second fins have second coating layers on both surfaces thereof by applying the hydrophilic material.  
     
     
         4 . The heat exchanger of  claim 1 , wherein the fins have one surfaces treated by the water repellent material and the other surfaces treated by the hydrophilic material, and the one surfaces of the fins on which the water repellent material is treated and the other surfaces of the fins on which the hydrophilic material is treated face each other with certain gaps therebetween.  
     
     
         5 . The heat exchanger of  claim 4 , wherein first coating layers are formed on the one surfaces of the fins by applying the water repellent material, and second coating layers are formed on the other surfaces by applying the hydrophilic material.