Heat exchanger

Abstract

A heat exchanger is provided which may include a first pipe, into which a first fluid may be introduced and flow, and a second pipe disposed in the first pipe, into which a second fluid may be introduced and flow. The first and second pipes may contact each other, to prevent the second pipe from vibrating.

1 . A heat exchanger comprising:
 a first pipe into which a first fluid is introduced and flows; and   a second pipe disposed in the first pipe, into which a second fluid is introduced and flows, wherein the first and second pipes contact each other so that the second pipe is prevented from vibrating.   
     
     
         2 . The heat exchanger according to  claim 1 , wherein the first pipe is formed in a cylindrical shape, and the second pipe is formed in a wave shape so that a convex portion of the second pipe contacts an internal surface of the first pipe. 
     
     
         3 . The heat exchanger according to  claim 1 , wherein the first pipe is formed in a wave shape, and the second pipe is formed in a cylindrical shape so that a concave portion of the first pipe contacts an external surface of the second pipe. 
     
     
         4 . The heat exchanger according to  claim 1 , wherein the first and second pipes are formed in a cylindrical shape, and a vibration preventing member is provided between the first and second pipes to prevent the second pipe from vibrating. 
     
     
         5 . The heat exchanger according to  claim 4 , wherein the vibration preventing member is formed in a hemisphere shape and fixed to an internal surface of the first pipe, a convex portion of the vibration preventing member contacting an external surface of the second pipe. 
     
     
         6 . The heat exchanger according to  claim 5 , wherein a plurality of vibration preventing members is arranged along a longitudinal direction of the first pipe, and radially and circumferentially disposed on the internal surface of the first pipe. 
     
     
         7 . The heat exchanger according to  claim 5 , wherein three vibration preventing members are circumferentially arranged on the first pipe, and a central angle formed between any two of the three vibration preventing members ranges from approximately 100° to approximately 140°. 
     
     
         8 . The heat exchanger according to  claim 5 , wherein a distance between the vibration preventing members arranged in the longitudinal direction of the first pipe is approximately 20 to approximately 40 times an external diameter of the second pipe. 
     
     
         9 . The heat exchanger according to  claim 4 , wherein the vibration preventing member is formed in a pin shape so that the vibration preventing member is fixed through the first pipe and an end of the member contacts an external surface of the second pipe. 
     
     
         10 . The heat exchanger according to  claim 9 , wherein a plurality of vibration preventing members are arranged along a longitudinal direction of the first pipe, and are circumferentially arranged on the internal surface of the first pipe with a predetermined space therebetween. 
     
     
         11 . The heat exchanger according to  claim 10 , wherein three vibration preventing members are circumferentially fixed to the internal surface of the first pipe, and an angle formed between two of the three vibration preventing members ranges from approximately 100° to approximately 140°. 
     
     
         12 . The heat exchanger according to  claim 10 , wherein a distance between the plurality of vibration preventing members arranged in the longitudinal direction of the first pipe is approximately 20 to approximately 40 times an external diameter of the second pipe. 
     
     
         13 . The heat exchanger according to  claim 1 , wherein at least one of the first pipe or second pipe is shaped different from the other of the first pipe or second pipe, so as to prevent the respective pipe from vibrating. 
     
     
         14 . A heater comprising the heat exchanger according to  claim 1 . 
     
     
         15 . A cooler comprising the heat exchanger according to  claim 1 . 
     
     
         16 . An evaporator comprising the heat exchanger according to  claim 1 . 
     
     
         17 . A condenser comprising the heat exchanger according to  claim 1 . 
     
     
         18 . A heat exchanger comprising:
 a first pipe into which a first fluid is introduced and flows; and   a second pipe disposed in the first pipe, into which a second fluid is introduced and flows, wherein at least one of the first pipe or second pipe is shaped different from the other of the first or second pipe, so as to prevent the respective pipe from vibrating.   
     
     
         19 . The heat exchanger according to  claim 18 , wherein the first pipe is formed in a cylindrical shape, and the second pipe is formed in a wave shape so that a convex portion of the second pipe contacts an internal surface of the first pipe. 
     
     
         20 . The heat exchanger according to  claim 18 , wherein the first pipe is formed in a wave shape, and the second pipe is formed in a cylindrical shape so that a concave portion of the first pipe contacts an external surface of the second pipe