Heat exchanger, a food handler including the heat exchanger, and a manufacturing method of the heat exchanger

Abstract

Provided are a heat exchanger, a food handler including the heat exchanger, and a manufacturing method of the heat exchanger. The heat exchanger comprises a main body wherein the plurality of flow channels passes through the inside of the heat exchanger in a first direction and a pair of cover members which is fastened to both ends of the main body in the first direction. The plurality of flow channels is composed of a first flow channel which functions as the path for a first flowing fluid which goes in and out through the cover members and a second flow channel which is connected to the side of the main body. Thermal exchange is performed between the first flowing fluid and the second flowing fluid in the direction wherein the first and second flowing fluids cross each other inside of the main body.

1 . A heat exchanger, in which heat transfer between a plurality of flowing fluids occurs, comprising:
 a body in which a plurality of flow channels are formed; and   a cover member coupled to both ends of front and rear surfaces of the body;   wherein the plurality of flow channels comprise a first flow channel serving as a passage for a first flowing fluid passing through the cover member in a first direction and a second flow channel serving as a passage for a second flowing fluid in a second direction passing through upper and lower ends of the body,   and the cover member closes the portion of the second flow channel which communicates with the front and rear surfaces of the body.   
     
     
         2 . The heat exchanger of  claim 1 , wherein the
 heat transfer occurs between the first flowing fluid and the second flowing fluid in the cross direction in the heat exchanger.   
     
     
         3 . The heat exchanger of  claim 2 , wherein the first flow channel and the second flow channel are alternatively disposed in a body. 
     
     
         4 .- 5 . (canceled) 
     
     
         6 . The heat exchanger of  claim 2 , wherein the first or second flow channel is provided with a heat exchange fin with a predetermined shape protruding from the flow channel. 
     
     
         7 . The heat exchanger of  claim 6 , wherein the heat exchange fin is oppositely disposed in a staggered manner on an inner surface of either the first or second flow channel which is provided with the heat exchange fin. 
     
     
         8 .- 9 . (canceled) 
     
     
         10 . A method of manufacturing a heat exchanger in which heat transfer between a plurality of flowing fluids occurs, comprising:
 (a) forming a body constituting the heat exchanger through extruding process in a first direction, so that a plurality of flow channels, in which the plurality of flowing fluids flow, are formed to have a different height;   (b) cutting a lateral surface of the body in a second direction different from the first direction of the flow channel by a depth until a distal end of the flow channel having the different height is exposed outward; and   (c) attaching a cover member which closes the portion of the flow channel which communicates with the front and rear surfaces of the bodyin the first direction.   
     
     
         11 . The heat exchanger of  claim 1 , wherein heat transfer occurs between exhaust gas generated from a food handler and cold air supplied from an exterior flow in the heat exchanger. 
     
     
         12 . A food handler comprising heat exchanger manufactured by the method of  claim 10 . 
     
     
         13 . A method of manufacturing a heat exchanger of  claim 10 , wherein the step (a) comprises:
 manufacturing the plurality of flow channels into a first flow channel and a second flow channel which is formed rather longer than the first flow channel in the second direction.   
     
     
         14 . A method of manufacturing a heat exchanger of  claim 13 , wherein the first flow channel and the second flow channel are alternatively disposed in the body. 
     
     
         15 . A method of manufacturing a heat exchanger of  claim 13 , wherein the step (b) comprises:
 exposing only the second flow channel outwardly in the second direction by cutting the lateral surface of the body.   
     
     
         16 . A method of manufacturing a heat exchanger of  claim 10 , wherein the step (a) comprises:
 disposing a heat exchange fin oppositely in a staggered manner on an inner surface of either the first or second flow channel.   
     
     
         17 . A method of manufacturing a heat exchanger of  claim 10 , wherein the step (c) comprises:
 attaching the cover member to the body so as to prevent the second flowing fluid inside the second flow channel from being discharged from the body in the first direction.