Heat exchanger

Abstract

A heat exchanger ( 100 ) includes a plurality of fin units ( 10 ), a first pipeline unit ( 2 ), and a second pipeline unit ( 3 ); the plurality of fin units ( 10 ) is spaced apart from each other and arranged side by side; the first pipeline unit ( 2 ) penetrates through the fin units ( 10 ), and includes a plurality of first pipelines ( 201 ) distributed at intervals in the length direction of the fin units ( 10 ); the second pipeline unit ( 3 ) penetrates through the fin units ( 10 ); the second pipeline unit ( 3 ) and the first pipeline unit ( 2 ) are arranged at intervals in the width direction of the fin units ( 10 ); the second pipeline unit ( 3 ) includes a plurality of second pipelines ( 301 ) distributed at intervals in the length direction of the fin units ( 10 ); and the pipeline structures of the second pipelines ( 301 ) and the first pipelines ( 201 ) are different.

What is claimed is: 
     
         1 . A heat exchanger, comprising
 a plurality of fin units, wherein the plurality of fin units are spaced from each other and arranged side by side;   a first pipeline unit penetrating through the plurality of fin units, wherein the first pipeline unit comprises a plurality of first pipelines arranged at intervals along a length direction of the plurality of fin units; and   a second pipeline unit penetrating through the plurality of fin units, wherein the second pipeline unit and the first pipeline unit are spaced from each other along a width direction of the plurality of fin units, and the second pipeline unit comprises a plurality of second pipelines arranged at intervals along the length direction of the plurality of fin units;   wherein a pipeline structure of the plurality of second pipelines is different from a pipeline structure of the plurality of first pipelines.   
     
     
         2 . The heat exchanger of  claim 1 , wherein the first pipeline unit is a first flat pipe unit, the first flat pipe unit comprises a plurality of first flat pipes arranged at intervals along the length direction of the plurality of fin units, the second pipeline unit is a second flat pipe unit, and the second flat pipe unit comprises a plurality of second flat pipes arranged at intervals along the length direction of the plurality of fin units;
 wherein the plurality of first flat pipes and the plurality of second flat pipes are interlaced and a cross sectional area of each of the plurality of first flat pipes is greater than a cross sectional area of each of the plurality of second flat pipes.   
     
     
         3 . The heat exchanger of  claim 2 , wherein a length of each of the plurality of first flat pipes is equal to a length of each of the plurality of second flat pipes, and a pipe thickness of the plurality of first flat pipes is equal to a pipe thickness of each of the plurality of second flat pipes; a width of each of the plurality of first flat pipes is defined as L 1 , a width of each of the plurality of second flat pipes is defined as L 2 , and the width L 1  of each of the plurality of first flat pipes and the width L 2  of each of the plurality of second flat pipes satisfy a following formula: 6 mm≤L 2 <L 1 ≤20 mm; optionally,
 a length of each of the plurality of first flat pipes is equal to a length of each of the plurality of second flat pipes, and a width of the plurality of first flat pipes is equal to a width of each of the plurality of second flat pipes; a pipe thickness of each of the plurality of first flat pipes is defined as H 1 , a pipe thickness of each of the plurality of second flat pipes is defined as H 2 , and the pipe thickness H 1  of each of the plurality of first flat pipes and the pipe thickness H 2  of each of the plurality of second flat pipes satisfy a following formula: 1 mm≤H 2 <H 1  ≤5 mm. 
 
     
     
         4 . The heat exchanger of  claim 2 , wherein one of the plurality of first flat pipes and adjacent two of the plurality of second pipes are arranged in an equilateral triangle-shape;
 a vertical distance between a central plane of one of the plurality of first flat pipes along the length direction of the plurality of fin units and a central plane of an adjacent second pipe along the length direction of the plurality of fin units is defined as S, and the vertical distance S between the central plane of one of the plurality of first flat pipes along the length direction of the plurality of fin units and the central plane of the adjacent second pipe along the length direction of the plurality of fin units satisfy a following formula: 12 mm≤S≤25 mm.   
     
     
         5 . The heat exchanger of  claim 2 , further comprising a distributor and an adapting unit, the distributor comprises a first capillary pipe and a second capillary pipe, a pipe size of the first capillary pipe is greater than a pipe size of the second capillary pipe;
 wherein the first capillary pipe is connected to and in communication with one of the plurality of first flat pipes via the adapting unit, and the second capillary pipe is connected to and in communication with one of the plurality of second flat pipes via the adapting unit.   
     
     
         6 . The heat exchanger of  claim 5 , wherein the adapting unit comprises a first adapter and a second adapter, one end of the first adapter fits with the first capillary pipe, the other end of the first adapter fits with a corresponding first flat pipe of the plurality of first flat pipes; and one end of the second adapter fits with the second capillary pipe, and the other end of the second adapter fits with a corresponding second flat pipe of the plurality of second flat pipes. 
     
     
         7 . The heat exchanger of  claim 1 , wherein the first pipeline unit is a first flat pipe unit, the first flat pipe unit comprises a plurality of first flat pipes arranged at intervals along the length direction of the plurality of fin units, the second pipeline unit is a circular pipe unit, and the circular pipe unit comprises a plurality of circular pipes arranged at intervals along the length direction of the plurality of fin units;
 wherein the heat exchanger further comprises a bending connector, one end of the bending connector is connected to and in communication with a corresponding circular pipe of the plurality of circular pipes, and the other end of the bending connector is connected to and in communication with a corresponding first flat pipe of the plurality of first flat pipes.   
     
     
         8 . The heat exchanger of  claim 7 , wherein the bending connector comprises
 a first connecting portion, wherein one end of the first connecting portion is connected to and in communication with a corresponding first flat pipe of the plurality of first flat pipes;   a second connecting portion, wherein one end of the second connecting portion is connected to and in communication with the corresponding circular pipe of the plurality of circular pipe; and   a twisting portion, wherein one end of the twisting portion is connected to and in communication with one end of the first connecting portion away from the corresponding first flat pipe of the plurality of first flat pipes, and the other end of the twisting portion is connected to and in communication with one end of the second connecting portion away from the corresponding circular pipe of the plurality of circular pipes.   
     
     
         9 . The heat exchanger of  claim 8 , wherein the first connecting portion fits with the corresponding first flat pipe of the plurality of first flat pipes, and at least part of the corresponding first flat pipe of the plurality of first flat pipes penetrates into the first connecting portion; the second connecting portion fits with the corresponding circular pipe of the plurality of circular pipes, and at least part of the corresponding circular pipe of the plurality of circular pipes penetrates into the second connecting portion; and
 the twisting portion is U-shaped, and a cross section of one end of the twisting portion is kidney-shaped, a cross section of the other end of the twisting portion is circular-shaped, and the one end of the twisting portion with the kidney-shaped cross section is in a smooth transition to the other end of the twisting portion with the circular-shaped cross section.   
     
     
         10 . The heat exchanger of  claim 7 , wherein the plurality of first flat pipes and the plurality of circular pipes are interlaced, and one of the plurality of first flat pipes is connected to and in communication with an adjacent circular pipe of the plurality of circular pipes via the bending connector. 
     
     
         11 . The heat exchanger of  claim 7 , wherein the heat exchanger further comprises a plurality of bending pipes, and ends of the adjacent two of the plurality of first flat pipes away from the bending connector are connected to and in communication with each other via corresponding one of the plurality of bending pipes. 
     
     
         12 . The heat exchanger of  claim 7 , further comprising a distributor and a collecting pipe, wherein an end of one of adjacent two of the plurality of circular pipes away from the bending connector is connected to and in communication with the distributor, and an end of the other of the adjacent two of the plurality of circular pipes away from the bending connector is connected to and in communication with the collecting pipe. 
     
     
         13 . The heat exchanger of  claim 12 , wherein a bending portion is defined by an end of each of the plurality of circular pipes away from the bending connector bending, and the bending portion is connected to and in communication with the distributor. 
     
     
         14 . The heat exchanger of  claim 1 , wherein the plurality of fin units comprises a first fin and a second fin, the first pipeline unit penetrates though the first fin, and the second pipeline unit penetrates through the second fin;
 wherein the second fin is located at a side of the first fin adjacent to the first pipeline unit and abuts against the first fin.   
     
     
         15 . The heat exchanger of  claim 14 , wherein a width of the first fin is defined as W 1 , a width of the second fin is defined as W 2 , and the width W 1  of the first fin and the width W 2  of the second fin satisfy with a following formula: W 2 <W 1 .