Heat exchanger and air conditioner having same

Abstract

A heat exchanger may comprise: a plurality of refrigerant tubes configured to allow a refrigerant to flow therethrough, and including first and second refrigerant tubes arranged in a first direction; and a heat exchange fin coupled to the plurality of refrigerant tubes and extending in the first direction; a slit fin extending from one surface thereof and having a slit extending in the first direction between the first refrigerant tube and the second refrigerant tube \to allow air to pass therethrough in a second direction perpendicular to the first direction, wherein the slit fin comprises: an upper surface extending in the first direction; a connection surface positioned on both sides of the upper surface in the first direction, extending from the upper surface, and connected to the one surface of the heat exchange fin; and a reinforcement portion formed on the upper surface and extending in the first direction.

What is claimed is: 
     
         1 . A heat exchanger, comprising:
 a plurality of refrigerant tubes configured to allow refrigerant to flow therethrough and including a first refrigerant tube and a second refrigerant tube arranged in a first direction; and   a heat exchange fin coupled to the plurality of refrigerant tubes and extending in the first direction,   wherein the heat exchange fin comprises: a slit fin extending from one surface thereof and including a slit extending in the first direction between the first refrigerant tube and the second refrigerant tube to allow air to pass therethrough in a second direction perpendicular to the first direction, and   wherein the slit fin comprises:   an upper surface extending in the first direction;   a connection surface positioned on both sides of the upper surface in the first direction, extending from the upper surface, and connected to the one surface of the heat exchange fin; and   a reinforcement portion formed on the upper surface and extending in the first direction.   
     
     
         2 . The heat exchanger of  claim 1 , wherein
 the upper surface faces a direction in which the plurality of refrigerant tubes extend.   
     
     
         3 . The heat exchanger of  claim 1 , wherein
 the reinforcement portion includes a reinforcing groove provided on the upper surface and facing the one surface of the heat exchanger.   
     
     
         4 . The heat exchanger of  claim 3 , wherein
 the reinforcing groove is provided at a center in the second direction of the upper surface.   
     
     
         5 . The heat exchanger of  claim 3 , wherein
 the reinforcing groove provided on the upper surface extends to the connection surface.   
     
     
         6 . The heat exchanger of  claim 3 , wherein
 the reinforcing groove includes a first reinforcing groove and a second reinforcing groove symmetric to each other with respect to a center in the second direction of the upper surface.   
     
     
         7 . The heat exchanger of  claim 3 , wherein
 the reinforcing groove has a rounded shape from the upper surface.   
     
     
         8 . The heat exchanger of  claim 1 , wherein
 the reinforcement portion comprises a reinforcing rib protruding from the upper surface.   
     
     
         9 . The heat exchanger of  claim 8 , wherein
 the reinforcing rib is provided at a center in the second direction of the upper surface.   
     
     
         10 . The heat exchanger of  claim 8 , wherein
 the reinforcing rib has a rounded shape.   
     
     
         11 . The heat exchanger of  claim 1 , wherein
 the slit fin includes:   a first slit fin; and   a second slit fin positioned downstream of the first slit fin with respect to an airflow direction, and   wherein the second slit fin is provided such that a spacing distance to the first refrigerant tube is the same as a spacing distance to the second refrigerant tube.   
     
     
         12 . The heat exchanger of  claim 1 , wherein
 the upper surface is parallel to the one surface of the heat exchange fin in a third direction perpendicular to the first direction and the second direction.   
     
     
         13 . The heat exchanger of  claim 1 , wherein
 the slit fin has a length in the first direction of 8 mm or more.   
     
     
         14 . The heat exchanger of  claim 2 , wherein
 the slit fin has a square of a length in the first direction over a square of a width in the second direction of the upper surface is 130 or less.   
     
     
         15 . The heat exchanger of  claim 1 , wherein
 the heat exchange fin further comprises:   a base plate including a tube hole configured to receive the first refrigerant tube; and   a support rib protruding from the base plate along an edge of the tube hole in a direction in which the plurality of refrigerant tubes extend, and configured to support the first refrigerant tube, and   wherein a spacing distance between the slit fin and the support rib 1.5 mm or less.