Heat exchanger

Abstract

A heat exchanger includes a refrigerant pipe in which a refrigerant flows and a heat exchanger fin coupled to the outer circumference of the refrigerant pipe. The heat exchanger fin includes a plate, a protrusion protruding from the plate, slits disposed at opposite sides of the protrusion to guide air to the protrusion, and a louver unit provided at the protrusion to perform heat exchange with the air having passed through the slits.

1 . A heat exchanger comprising:
 a refrigerant pipe in which a refrigerant flows; and   a heat exchanger fin coupled to an outer circumference of the refrigerant pipe, wherein the heat exchanger fin comprises
 a plate; 
 a protrusion protruding from the plate; 
 slits disposed at opposite sides of the protrusion to guide air to the protrusion; and 
 a louver unit provided at the protrusion to perform heat exchange with the air having passed through the slits. 
   
     
     
         2 . The heat exchanger according to  claim 1 , wherein the louver unit comprises:
 first cutouts provided at the protrusion; and   a plurality of guide plates provided in parallel to each other so that the guide plates are spaced apart from each other by the respective first cutouts,   the first cutouts and the guide plates being alternately arranged.   
     
     
         3 . The heat exchanger according to  claim 2 , wherein each of the guide plates has a width of 0.5 mm to 3 mm. 
     
     
         4 . The heat exchanger according to  claim 2 , wherein the protrusion comprises first inclined surfaces inclined relative to the plate,
 the guide plates are provided at the first inclined surfaces, and   an angle between the guide plates and the first inclined surfaces is 10 to 60 degrees.   
     
     
         5 . The heat exchanger according to  claim 1 , wherein each of the slits comprises:
 second inclined surfaces inclined relative to the plate;   a top surface formed between the second inclined surfaces; and   a second cutout provided at a rear of the top surface.   
     
     
         6 . The heat exchanger according to  claim 5 , wherein the top surface has a width of 0.5 mm to 5 mm. 
     
     
         7 . The heat exchanger according to  claim 4 , wherein the first inclined surfaces are disposed at the plate symmetrically,
 a distance between a line formed at a position where the first inclined surfaces join each other and the plate constitutes a height of the protrusion, and   the protrusion has a height of 0.5 mm to 4 mm.   
     
     
         8 . The heat exchanger according to  claim 4 , wherein the first inclined surfaces are disposed at the plate in a symmetrical fashion,
 a distance between a flat surface connected between the first inclined surfaces and the plate constitutes a height of the protrusion, and   the protrusion has a height of 0.5 mm to 4 mm.   
     
     
         9 . The heat exchanger according to  claim 1 , wherein the heat exchanger fin comprises a plurality of plates stacked at an interval. 
     
     
         10 . A heat exchanger comprising a tube to guide a fluid and a heat exchanger fin contacting the tube to perform heat exchange between the fluid and external air, wherein the heat exchanger fin comprises:
 location holes in which the tube is located in a supported state;   a protrusion provided between the location holes, the protrusion protruding in an extension direction of the tube;   a slit disposed at a periphery of the protrusion to accelerate air introduced to the protrusion; and   a louver unit formed at the protrusion to perform heat exchange between the air having passed through the slit and the fluid.   
     
     
         11 . The heat exchanger according to  claim 10 , wherein the louver unit comprises:
 a plurality of guide plates provided in parallel to each other so that the guide plates are spaced apart from each other; and   a plurality of first cutouts alternating with the guide plates.   
     
     
         12 . The heat exchanger according to  claim 11 , wherein the protrusion comprises first inclined surfaces disposed symmetrically to form a ‘V’ shape, and
 the guide plates and the first cutouts are provided at the first inclined surfaces. 
 
     
     
         13 . The heat exchanger according to  claim 12 , wherein an angle between the first inclined surfaces and the guide plates provided at the first inclined surfaces is 10 to 60 degrees. 
     
     
         14 . The heat exchanger according to  claim 13 , wherein each of the guide plates has a width of 0.5 mm to 3 mm. 
     
     
         15 . The heat exchanger according to  claim 14 , wherein the slit comprises:
 second inclined surfaces protruding in an extension direction of the tube;   a top surface formed between the second inclined surfaces; and   a second cutout provided at a rear of the top surface.   
     
     
         16 . The heat exchanger according to  claim 15 , wherein the top surface has a width of 0.5 mm to 5 mm. 
     
     
         17 . The heat exchanger according to  claim 11 , wherein the protrusion comprises:
 first inclined surfaces disposed symmetrically; and   a flat surface connected between the first inclined surfaces,   the guide plates and the first cutouts being provided at the first inclined surfaces or the flat surface.   
     
     
         18 . The heat exchanger according to  claim 10 , wherein the louver unit comprises a plurality of guide plates spaced apart from each other and a plurality of first cutouts alternating with the guide plates,
 the protrusion comprises first inclined surfaces disposed to form a ‘V’ shape, and   the guide plates and the first cutouts are provided at the first inclined surfaces.   
     
     
         19 . The heat exchanger according to  claim 18 , wherein the guide plates are provided at the first inclined surfaces at varying inclination angles relative to the first inclined surfaces. 
     
     
         20 . The heat exchanger according to  claim 18 , wherein the inclined surfaces are disposed to form a non-symmetrical ‘V’ shape.