Heat exchanger and air conditioning system having same

Abstract

A heat exchanger and an air conditioning system are provided. The heat exchanger includes a first fin and a plurality of flat pipes parallel to each other and arranged at interval, wherein each of the plurality of flat pipes includes a reserved pipe section, each of the plurality of flat pipes is bent at the reserved pipe section, the first fin is connected to the reserved pipe section and is capable of covering gaps between a plurality of reserved pipe sections; and wherein along an extending direction of the reserved pipe section, a width of the first fin is defined as W 1 , the number of the first fin is n, a length of the reserved pipe section is defined as L, and the width W 1 of the first fin, the number n of the first fin, the length L of the reserved pipe section satisfy following relationship: W 1 ≤ L / n .

What is claimed is: 
     
         1 . A heat exchanger comprising a first fin and a plurality of flat pipes parallel to each other and arranged at interval, wherein each of the plurality of flat pipes comprises a reserved pipe section, each of the plurality of flat pipes is bent at the reserved pipe section, the first fin is connected to the reserved pipe section and is capable of covering gaps between a plurality of reserved pipe sections;
 wherein along an extending direction of the reserved pipe section, a width of the first fin is defined as W 1 , the number of the first fin is n, a length of the reserved pipe section is defined as L, and the width W 1  of the first fin, the number n of the first fin, the length L of the reserved pipe section satisfy following relationship:   
       
         
           
             
               
                 W 
                 1 
               
               ≤ 
               
                 L 
                 / 
                 
                   n 
                   . 
                 
               
             
           
         
       
     
     
         2 . The heat exchanger of  claim 1 , wherein a width of the reserved pipe section is defined as W 2 , and the width W 2  of the reserved pipe section and the width W 1  of the first fin satisfy following relationship:
   W 1 ≥L/2.
   
     
     
         3 . The heat exchanger of  claim 1 , wherein a width of the reserved pipe section is defined as W 2 , the width W 2  of the reserved pipe section and the length L of the reserved pipe section satisfy following relationship:
   L≥2W 2 .
   
     
     
         4 . The heat exchanger of  claim 1 , wherein the plurality of flat pipes further comprises a first pipe section and a second pipe section, two ends of the reserved pipe section are connected to the first pipe section and the second pipe section, respectively, the reserved pipe section comprises a straight pipe section and a bent pipe section connected to each other, an end of straight pipe section is connected to the first pipe section and/or the second pipe section, and two ends of the bent pipe section are connected to the straight pipe section, respectively. 
     
     
         5 . The heat exchanger of  claim 4 , wherein a width of a part of the first fin connected to the straight pipe section is greater than or equal to a width of a part of the first fin connected to the bent pipe section. 
     
     
         6 . The heat exchanger of  claim 1 , wherein along a direction perpendicular to the extending direction of the reserved pipe section, a height of the first fin is defined as h′, and the height h′of the first fin decreases from the straight pipe section to the bent pipe section. 
     
     
         7 . The heat exchanger of  claim 6 , wherein a width of each of the plurality of flat pipes is defined as W 3 , and a maximum of the height h′of the first fin is smaller than or equal to the width W 3  of each of the plurality of flat pipes. 
     
     
         8 . The heat exchanger of  claim 1 , wherein the first fin is distributed on two sides of each of the plurality of reserved pipe sections. 
     
     
         9 . The heat exchanger of  claim 1 , wherein the first fin is provided with a plurality of grooves, the plurality of grooves are arranged at interval along a length direction of the first fin, and at least part of each of the plurality of reserved pipe sections is located in one of the plurality of grooves. 
     
     
         10 . The heat exchanger of  claim 9 , wherein the plurality of the reserved pipe sections are corresponding to the plurality of grooves one by one, or
 at least one of the plurality of grooves between adjacent two of the plurality of reserved pipe sections does not fit with the plurality of reserved pipe sections.   
     
     
         11 . The heat exchanger of  claim 9 , wherein the first fin comprises a plurality of fin segments sequentially connected, each of the plurality of fin segments is located between adjacent two of the plurality of reserved pipe sections, and a cross section of each of the plurality of fin segments is in an arc shape, a straight line shape, an oblique line shape, V shape or wave shape. 
     
     
         12 . The heat exchanger of  claim 11 , wherein a width of each of the plurality of flat pipes is defined as W 3 , a height of each of the plurality of fin segments along a width direction of each of the plurality of flat pipes is defined as h, the width W 3  of each of the plurality of flat pipes and the height h of each of the plurality of fin segments satisfy the relationship: h>W 3 /2. 
     
     
         13 . The heat exchanger of  claim 1 , wherein the first fin is made of composite aluminum foil. 
     
     
         14 . An air conditioning system comprising the heat exchanger of  claim 1 .