Heat exchanger

Abstract

The present disclosure discloses a heat exchanger including a group of collecting pipes and a number of heat exchange assemblies. Each heat exchange assembly includes a fin plate and at least one heat exchange tube. The heat exchange assembly includes a main heat exchange area. The heat exchange tube is connected with the fin plate. The heat exchange tube at least partially protrudes from at least one side of the fin plate. In addition, in the main heat exchange area corresponding to two adjacent heat exchange assemblies, at least two adjacent heat exchange tubes are staggered along an array direction of the heat exchange assemblies. The two heat exchange tubes respectively belong to the two adjacent heat exchange assemblies. The present disclosure is beneficial to improve the performance of the heat exchanger.

1 : A heat exchanger, comprising: two collecting pipes and a plurality of heat exchange assemblies;
 the collecting pipe comprising a pipe body and an inner cavity located in the pipe body;   the plurality of heat exchange assemblies being arranged along a length direction of the collecting pipe, a gap for air circulation being formed between two adjacent heat exchange assemblies, the heat exchange assembly comprising a fin plate and at least one heat exchange tube, the heat exchange assembly comprising a main heat exchange area in which the heat exchange tube is connected to the fin plate;   the heat exchange tube being provided with an inner flow channel communicating with the inner cavities of the two collecting pipes, the inner flow channel of the heat exchange tube and the inner cavities of the two collecting pipes forming part of a refrigerant flow passage; in the main heat exchange area corresponding to two adjacent heat exchange assemblies, at least one pair of two adjacent heat exchange tubes having an adjacent relationship being staggered along an array direction of the heat exchange assembly in which the two adjacent heat exchange tubes respectively belong to two adjacent heat exchange assemblies; wherein regard to one of the pair of heat exchange tubes, the other of the pair of heat exchange tubes is the heat exchange tube with a closest distance from the one of the pair of heat exchange tubes in the heat exchange assembly.   
     
     
         2 : The heat exchanger according to  claim 1 , wherein in the length direction of the heat exchange assembly, a length of the heat exchange tube is greater than that of the fin plate, and both ends of the heat exchange tube extend beyond the fin plate in the length direction of the heat exchange assembly; at least a part of the heat exchange tube extending beyond the fin plate is fixedly connected to the pipe body of the collecting pipe; and a distance is formed between the pipe body of the collecting pipe and the fin plate, or the pipe body of the collecting pipe is in contact with the fin plate. 
     
     
         3 : The heat exchanger according to  claim 1 , wherein the heat exchange tube is welded to a surface of the fin plate in the main heat exchange area;
 all of the plurality of heat exchange tubes in the same heat exchange assembly protrude from a surface of the same side of the fin plate; and in two adjacent heat exchange assemblies, the heat exchange tubes of one of the heat exchange assemblies and the heat exchange tubes of the other of the heat exchange assemblies are located at different sides of the fin plate, respectively.   
     
     
         4 : The heat exchanger according to  claim 2 , wherein a cross section of the fin plate perpendicular to the length direction of the heat exchange assembly is a continuous polyline shape, a cross section of the heat exchange tube is a rhombus shape; the fin plate has an included angle which matches the rhombus shape of the heat exchange tube at a bending position of the polyline shape, and two adjacent side walls of the heat exchange tube are respectively fixed to the fin plate based on the rhombus shape thereof, so that the fin plate forms a semi-enclosed arrangement on the heat exchange tube. 
     
     
         5 : The heat exchanger according to  claim 2 , wherein a cross section of the fin plate perpendicular to the length direction of the heat exchange assembly has a wave shape; a cross section of the heat exchange tube is circular or oval; the fin plate comprises a plurality of straight portions and a plurality of arc portions, the arc portions are located between two adjacent straight portions, the arc portions form wave-shaped wave crests and wave troughs, part of an outer surface of the heat exchange tube is fixed to the arc portions of the fin plate; and wherein a curvature of a fixed portion of the heat exchange tube and the arc portion is the same in size and direction as a curvature of the corresponding arc portion. 
     
     
         6 : The heat exchanger according to  claim 1 , wherein the fin plate comprises a plurality of sub-plates, the heat exchange tube is connected between two adjacent sub-plates; the heat exchange tube comprises a tube body located at a periphery of the inner flow channel, and the plurality of sub-plates of the fin plate and the tube body of the heat exchange tube are integrally formed through a die casting process, or are integrally formed through an extrusion process. 
     
     
         7 : The heat exchanger according to  claim 1 , wherein all of the plurality of heat exchange assemblies have the same structure and shape, and one heat exchange assembly of two adjacent heat exchange assemblies is turned 180° relative to the other heat exchange assembly; and a ratio of an area of an outer surface of the heat exchange assembly to an area of a sum of inner surfaces of all the heat exchange tubes is 5 to 45 in a single heat exchange assembly. 
     
     
         8 : The heat exchanger according to  claim 1 , wherein the fin plate comprises a body and a plurality of bridges protruding from the body, a bridge hole is formed between each bridge and the body, and the bridge hole is adapted for air to pass through. 
     
     
         9 : The heat exchanger according to  claim 1 , wherein the heat exchange assembly comprises a plurality of the heat exchange tubes which are distributed along a width direction of the heat exchange assembly;
 the heat exchange assembly further comprises two connection areas located at both sides of the main heat exchange area along a length direction thereof; and a dimension of an end of at least one of the two connection areas in the width direction of the heat exchange assembly is smaller than a dimension of the main heat exchange area in the width direction of the heat exchange assembly.   
     
     
         10 : The heat exchanger according to  claim 9 , wherein the heat exchange tube comprises a main body section located in the main heat exchange area; the heat exchange tube further comprises a mounting section and a matching section at each connection area of the heat exchange assembly, the matching section is located between the collecting pipe and the fin plate, and the mounting section is located at a side of an outer surface of the collecting pipe close to the inner cavity thereof;
 wherein the mounting sections of the plurality of heat exchange tubes are converged in the width direction of the heat exchange assembly compared to the main body section.   
     
     
         11 : The heat exchanger according to  claim 10 , wherein the collecting pipe comprises mounting slots, a dimension of the mounting slot is adapted to a dimension of the mounting section where the heat exchange tubes are converged, the mounting sections of the plurality of heat exchange tubes are in order to fit and contact each other, the mounting sections of the plurality of heat exchange tubes are at least partially accommodated in corresponding mounting slots, and the pipe body of the collecting pipe and the tube body of the heat exchange tube are hermetically connected at the mounting slots. 
     
     
         12 : A heat exchanger, comprising: a plurality of collecting pipes and a plurality of heat exchange assemblies;
 the collecting pipe comprising a pipe body and an inner cavity; the plurality of heat exchange assemblies being arranged along a length direction of the collecting pipe; and a gap for air circulation being formed between two adjacent heat exchange assemblies;   the heat exchange assembly comprising a fin plate and a plurality of heat exchange tubes, the heat exchange assembly comprising a main heat exchange area in which the plurality of heat exchange tubes are distributed along a width direction of the heat exchange assembly, and the heat exchange tube being connected to the fin plate;   the plurality of heat exchange tubes of the heat exchange assembly being divided into at least two groups along the width direction of the heat exchange assembly, the number of the heat exchange tubes in each group being at least one, and each group of heat exchange tubes being connected between two collecting pipes;   regard to the two adjacent groups of heat exchange tubes, in a length direction of the heat exchange tubes, inner flow channels of the two groups of heat exchange tubes respectively communicating with inner cavities of two different collecting pipes at one side; the inner flow channels of the two groups of heat exchange tubes being in communication with the inner cavity of the same collecting pipe at the other side, or the inner flow channels of the two groups of heat exchange tubes being respectively communicated with the inner cavities of two different collecting pipes at the other side, and the inner cavities of the two collecting pipes at the other side being communicated, so that a refrigerant flow in opposite directions in the inner flow channels of the two groups of heat exchange tubes.   
     
     
         13 : The heat exchanger according to  claim 12 , wherein regard to each heat exchange assembly, a length of the heat exchange tube is greater than a length of the fin plate in the length direction of the heat exchange assembly, and both ends of the heat exchange tube in the length direction extend beyond the fin plate;
 the pipe body of each collecting pipe is provided with a plurality of insertion holes which have multiple rows in a length direction of the collecting pipe, the number of insertion holes in each row matches the number of heat exchange tubes which are connected to the collecting pipe in the heat exchange assembly, the multiple rows of insertion holes are alternately staggered along the length direction of the collecting pipe; and the pipe body of the collecting pipe and the tube body of the heat exchange tube are hermetically connected at the insertion holes.   
     
     
         14 : The heat exchanger according to  claim 12 , wherein the plurality of collecting pipes comprise a first collecting pipe, a second collecting pipe, a third collecting pipe and a fourth collecting pipe, the first collecting pipe and the third collecting pipe are arranged side by side, and the second collecting pipe and the fourth collecting pipe are arranged side by side;
 the first collecting pipe and the second collecting pipe are arranged oppositely in a length direction of the heat exchange assembly; the third collecting pipe and the fourth collecting pipe are arranged oppositely in the length direction of the heat exchange assembly;   the plurality of heat exchange tubes comprise a first group of heat exchange tubes and a second group of heat exchange tubes which are adjacent to the first group of heat exchange tubes in the width direction of the heat exchange assembly, the first group of heat exchange tubes are connected between the first collecting pipe and the second collecting pipe, and the second group of heat exchange tubes are connected between the third collecting pipe and the fourth collecting pipe.   
     
     
         15 : The heat exchanger according to  claim 14 , wherein the pipe bodies of the second collecting pipe and the fourth collecting pipe are both provided with a first communication hole, the first communication hole of the second collecting pipe is aligned with the first communication hole of the fourth collecting pipe, and the first communication hole of the second collecting pipe is communicated with the first communication hole of the fourth collecting pipe. 
     
     
         16 : The heat exchanger according to  claim 15 , wherein the heat exchanger comprises a first connection body at least partially located between the second collecting pipe and the fourth collecting pipe, the first connection body has two arc-shaped concave surfaces, shapes of the two arc-shaped concave surfaces are respectively adapted to partial surfaces of the second collecting pipe and the fourth collecting pipe, and part of the surfaces of the second collecting pipe and the fourth collecting pipe are welded to at least part of the arc-shaped concave surfaces. 
     
     
         17 : The heat exchanger according to  claim 16 , wherein the first connection body is provided with a second communicating hole extending through the two arc-shaped concave surfaces; the pipe bodies of the second collecting pipe and the fourth collecting pipe are both provided with a third communication hole; two sides of the second communication hole are respectively aligned with the third communication hole of the second collecting pipe and the third communication hole of the fourth collecting pipe, the pipe body of the second collecting pipe at a position where the third communication hole is opened is separated from the pipe body of the fourth collecting pipe at a position where the third communication hole is opened, and the third communication hole of the second collecting pipe is communicated with the third communication hole of the fourth collecting pipe through the second communication hole, thereby making the inner cavity of the second collecting pipe communicate with the inner cavity of the fourth collecting pipe. 
     
     
         18 : The heat exchanger according to  claim 14 , wherein the heat exchanger comprises a second connection body which is welded between the second collecting pipe and the fourth collecting pipe, the second connection body is provided with a fourth communicating hole, the second collecting pipe and the fourth collecting pipe are provided with a fifth communication hole opposite to at least part of the fourth communication hole, and the fourth communication hole communicates with the fifth communication hole of the second collecting pipe and the fifth communication hole of the fourth collecting pipe, thereby making the inner cavity of the second collecting pipe communicate with the inner cavity of the fourth collecting pipe. 
     
     
         19 : The heat exchanger according to  claim 12 , wherein the plurality of collecting pipes comprise a first collecting pipe, a second collecting pipe and a third collecting pipe, the first collecting pipe and the third collecting pipe are arranged side by side, the first collecting pipe and the third collecting pipe are located at one side in a length direction of the heat exchange assembly, and the second collecting pipe is located at the other side in the length direction of the heat exchange assembly;
 the plurality of heat exchange tubes comprise a first group of heat exchange tubes and a second group of heat exchange tubes which are adjacent to the first group of heat exchange tubes in the width direction of the heat exchange assembly, the first group of heat exchange tubes are connected between the first collecting pipe and the second collecting pipe, the second group of heat exchange tubes are connected between the third collecting pipe and the second collecting pipe, the first group of heat exchange tubes have a first end connected to the first collecting pipe and a second end connected to the second collecting pipe, and the second group of heat exchange tubes have a third end connected to the third collecting pipe and a fourth end connected to the second collecting pipe; and wherein the second end and the fourth end are converged, compared with the first end and the third end, in the width direction of the heat exchange assembly.   
     
     
         20 : A heat exchanger, comprising: two collecting pipes and a plurality of heat exchange assemblies;
 the collecting pipe comprising a pipe body and an inner cavity located in the pipe body;   the plurality of heat exchange assemblies being arranged along a length direction of the collecting pipe, a gap for air circulation being formed between two adjacent heat exchange assemblies, the heat exchange assembly comprising a fin plate and a plurality of heat exchange tubes, the heat exchange assembly comprising a main heat exchange area in which the plurality of heat exchange tubes are distributed along a width direction of the heat exchange assembly, and the heat exchange tubes are connected to the fin plate; the heat exchange tube being provided with an inner flow channel communicating with the inner cavities of the two collecting pipes, and the inner flow channel of the heat exchange tube and the inner cavities of the two collecting pipes forming part of a refrigerant flow passage;   the heat exchange assembly further comprising two connection areas located at both sides of the main heat exchange area in the length direction thereof, a dimension of an end of at least one of the two connection areas in the width direction of the heat exchange assembly is smaller than that of the main heat exchange area in the width direction of the heat exchange assembly, and the pipe body of the collecting pipe and an end of the connection area of the heat exchange assembly are hermetically connected.