CN114518042A

CN114518042A - Heat exchanger and refrigeration air conditioning system with same

Info

Publication number: CN114518042A
Application number: CN202011308170.8A
Authority: CN
Inventors: 赵登基; 蒋建龙; 高强
Original assignee: Sanhua Hangzhou Micro Channel Heat Exchanger Co Ltd
Current assignee: Sanhua Hangzhou Micro Channel Heat Exchanger Co Ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2022-05-20
Anticipated expiration: 2040-11-19
Also published as: CN114518042B

Abstract

The application discloses heat exchanger and refrigeration air conditioning system who has it, the heat exchanger includes first pressure manifold, second pressure manifold, first subassembly, a plurality of first heat exchange tube, a plurality of second heat exchange tube and a plurality of first fin. One end of the first bending section is connected with the first collecting pipe, the other end of the first bending section is connected with one end of the first straight section, the other end of the first straight section is connected with the first assembly, the length direction of part of the pipe section of the first bending section and the length direction of the first straight section form an angle, one end of the second heat exchange pipe is connected with the first assembly, and the other end of the second heat exchange pipe is connected with the second collecting pipe; one end of the first fin is connected with the first straight section of the first heat exchange tube, the other end of the first fin is connected with the second heat exchange tube, and the first straight section and the second heat exchange tube are arranged adjacently. The heat exchanger increases the heat exchange flow, reduces the temperature difference among the heat exchange tubes of different flows during the work of the heat exchanger, and is favorable for improving the overall performance of the heat exchanger.

Description

Heat exchanger and refrigeration air conditioning system with same

Technical Field

The embodiment of the application relates to the technical field of heat exchange, in particular to a heat exchanger and a refrigeration air-conditioning system with the same.

Background

The multi-channel heat exchanger in the prior art is widely applied to the field of refrigeration and air conditioning. In a refrigeration air-conditioning system, the installation area of a heat exchanger is limited, and a multi-channel heat exchanger usually needs to be added with a flow path to increase the circulation distance of a refrigerant in the heat exchanger so as to improve the heat exchange performance. However, the multi-flow multi-channel heat exchanger is not beneficial to the improvement of the overall heat exchange performance of the heat exchanger due to the fact that the temperature difference of the heat exchange tubes in different flows is large when the multi-flow multi-channel heat exchanger works.

Disclosure of Invention

Therefore, the embodiment of the application provides a heat exchanger, and when the heat exchange process is increased, the temperature difference between different process heat exchange pipes during the working process of the heat exchanger is reduced, so that the overall performance of the heat exchanger is favorably improved.

A heat exchanger according to an embodiment of the first aspect of the present application comprises:

a first collecting pipe and a second collecting pipe;

a first component;

the heat exchange tubes are mainly flat in peripheral outline of the cross section and comprise a plurality of first heat exchange tubes and a plurality of second heat exchange tubes, the first heat exchange tubes are arranged at intervals along the length direction of the first collecting pipe and comprise first bending sections and first flat sections, one end of each first bending section is connected with the corresponding first collecting pipe, the other end of each first bending section is connected with one end of the corresponding first flat section, the other end of each first flat section is connected with the corresponding first assembly to communicate the corresponding first collecting pipe with the corresponding first assembly, and the length direction of part of tube sections of the first bending sections forms an angle with the length direction of the corresponding first flat sections,

the plurality of second heat exchange tubes are arranged at intervals along the length direction of the second collecting pipe, one end of each second heat exchange tube is connected with the first assembly, the other end of each second heat exchange tube is connected with the second collecting pipe so as to communicate the first assembly and the second collecting pipe, and the first heat exchange tubes and the second heat exchange tubes are arranged at intervals along the length direction of the first assembly; and

the fin comprises a first fin, one end of the first fin is connected with a first straight section of the first heat exchange tube in the length direction of the first assembly, the other end of the first fin is connected with the second heat exchange tube, the first straight section, the first fin and the second heat exchange tube are sequentially arranged in the length direction of the first assembly, and the number of the first fins is two or more.

According to this application embodiment's first heat exchange tube and second heat exchange tube of heat exchanger all communicate with first subassembly, and first heat exchange tube and second heat exchange tube interval arrangement in the length direction of first subassembly have increased the flow of refrigerant in the heat exchange tube, and first heat exchange tube and second heat exchange tube share part fin simultaneously, have reduced the temperature difference between the heat exchange tube that is in different flows, are favorable to improving the holistic heat transfer performance of heat exchanger.

In addition, when the heat exchanger according to the embodiment of the application is used as an evaporator, a refrigerant enters the first heat exchange tubes from the first collecting pipes, the first fins are connected between the first straight sections of the adjacent first heat exchange tubes and the second heat exchange tubes, the number of the first fins is two or more, the first fins are fins shared by the first heat exchange tubes and the second heat exchange tubes, the surface temperature of the second heat exchange tubes is higher than that of the first heat exchange tubes, and the heat of the second heat exchange tubes is transferred to the first heat exchange tubes through the shared fins, so that the frosting on the surfaces of the fins connected with the first heat exchange tubes can be further inhibited, and the heat exchange efficiency of the heat exchanger is improved.

In some embodiments, the first assembly includes a first member, the other ends of the plurality of first flat sections are connected to the first member, and the one ends of the plurality of second heat exchange tubes are connected to the first member.

In some embodiments, the first heat exchange tube and the second heat exchange tube are arranged at intervals in the length direction of the first assembly, the first assembly comprises a plurality of second pieces, each second piece is connected with the other end of the first straight section and is connected with one end of the second heat exchange tube, each second piece corresponds to one first heat exchange tube and one second heat exchange tube, and the plurality of second pieces are arranged in parallel in the length direction of the first assembly.

In some embodiments, the plurality of second heat exchange tubes are divided into a plurality of second heat exchange tube groups, each second heat exchange tube group includes at least two second heat exchange tubes, and the second heat exchange tube groups and the first heat exchange tubes are arranged at intervals in a length direction of the first module.

In some embodiments, the heat exchanger further comprises a spacer having a length direction substantially parallel to a length direction of the second heat exchange tube, at least a part of the first bent section of the first heat exchange tube is juxtaposed with the spacer in a width direction of the first straight section, and at least 2 spacers are disposed adjacent to the second heat exchange tube in the length direction of the first module.

In some embodiments, the fins further comprise second fins provided at least between the second heat exchange tubes adjacent in the length direction of the first block and the spacers, and/or the second fins are provided at least between the spacers adjacent in the length direction of the first block.

In some embodiments, the width of the second heat exchange tube is greater than the width of the first heat exchange tube, the first collecting pipe and the second collecting pipe are both circular tubes, the inner diameter of the second collecting pipe is greater than the inner diameter of the first collecting pipe, and/or the number of the second heat exchange tubes is greater than the number of the first heat exchange tubes.

A heat exchanger according to an embodiment of the second aspect of the present application includes:

a first collecting pipe and a second collecting pipe;

a first component and a second component, the first component comprising a first piece, the first piece being one;

the heat exchange tubes are mainly flat in peripheral outline of the cross section and comprise a plurality of first heat exchange tubes, a plurality of second heat exchange tubes and a plurality of third heat exchange tubes, the first heat exchange tubes are arranged at intervals along the length direction of the first collecting pipe, each first heat exchange tube comprises a first bending section, a second bending section and a first straight section, one end of the first bending section is connected with the first collecting pipe, the other end of the first bending section is connected with one end of the first straight section, the other end of the first straight section is connected with one end of the second bending section, the other end of the second bending section is connected with the first collecting pipe to communicate the first collecting pipe and the first piece, the length direction of part of the tube section of the first bending section forms an angle with the length direction of the first straight section, and the length direction of part of the second bending section forms an angle with the length direction of the first straight section, the second heat exchange tubes are arranged at intervals along the length direction of the second collecting pipe, one end of each second heat exchange tube is connected with the second assembly, the other end of each second heat exchange tube is connected with the second collecting pipe, a plurality of third heat exchange tubes are arranged at intervals along the length direction of the first piece so as to communicate the second assembly and the second collecting pipe, the third heat exchange tube comprises a third bent section and a second straight section, one end of the third bent section is connected with the first piece, the other end of the third bending section is connected with one end of the second straight section, the other end of the second straight section is connected with the second assembly, to communicate the first member and the second assembly, a length direction of a portion of the third curved section being angled from a length direction of the second straight section, the first heat exchange tube, the second heat exchange tube and the third heat exchange tube are arranged at intervals in the length direction of the first piece; and

the fin comprises a first fin, one end of the first fin is connected with a first straight section of the first heat exchange tube in the length direction of the first fin, the other end of the first fin is connected with the second heat exchange tube, the first straight section, the first fin and the second heat exchange tube are sequentially arranged in the length direction of the first assembly, and the number of the first fins is two or more.

According to the heat exchanger of the embodiment of the application, the first heat exchange tube and the third heat exchange tube are communicated with the first component, the third heat exchange tube and the second heat exchange tube are communicated with the second component, the first heat exchange tube, the second heat exchange tube and the second heat exchange tube are arranged in the length direction of the first heat exchange tube at intervals, the flow of a refrigerant in the heat exchange tubes is further increased, the heat exchange performance of the heat exchanger can be further improved, meanwhile, the heat exchange tubes in different flows share part of fins, the temperature difference between the heat exchange tubes in different flows is reduced, and the integral heat exchange performance of the heat exchanger is favorably improved.

In some embodiments, the second module comprises a third member, the third member is one, one end of each of the second heat exchange tubes is connected to the third member, and the other end of each of the second straight sections is connected to the third member.

In some embodiments, the plurality of second heat exchange tubes are divided into a plurality of second heat exchange tube groups, each second heat exchange tube group including at least two second heat exchange tubes, the second heat exchange tube groups, the first heat exchange tubes, and the third heat exchange tubes being arranged in order in a length direction of the first piece.

A heat exchanger according to an embodiment of the third aspect of the present application includes:

a first collecting pipe and a second collecting pipe;

a first component and a second component;

the heat exchange tubes are approximately flat in the peripheral outline of the cross section of each heat exchange tube, each heat exchange tube comprises a plurality of first heat exchange tubes, a plurality of second heat exchange tubes and a plurality of third heat exchange tubes, the first heat exchange tubes are arranged along the length direction of the first collecting pipe at intervals, each first heat exchange tube comprises a first bending section and a first straight section, one end of each first bending section is connected with the corresponding first collecting pipe, the other end of each first bending section is connected with one end of the corresponding first straight section, the other end of each first straight section is connected with the corresponding first assembly to communicate the first collecting pipe with the corresponding first assembly, the length direction of part of tube sections of the first bending sections forms an angle with the length direction of the corresponding first straight section, the second heat exchange tubes are arranged along the length direction of the corresponding second collecting pipe at intervals, and one end of each second heat exchange tube is connected with the corresponding second assembly, the other end of the second heat exchange tube is connected with the second collecting pipe so as to communicate the second assembly and the second collecting pipe, a plurality of third heat exchange tubes are arranged at intervals along the length direction of the first assembly or the second assembly, one end of each third heat exchange tube is connected with the first assembly, the other end of each third heat exchange tube is connected with the second assembly so as to communicate the first assembly and the second assembly, and the first heat exchange tubes, the second heat exchange tubes and the third heat exchange tubes are arranged at intervals along the length direction of the first assembly or the second assembly; and

Therefore, according to the heat exchanger, the first heat exchange tube and the third heat exchange tube are communicated with the first component, the third heat exchange tube and the second heat exchange tube are communicated with the second component, the first heat exchange tube, the second heat exchange tube and the second heat exchange tube are arranged at intervals in the length direction of the second component, the flow of refrigerants in the heat exchange tubes is further increased, the heat exchange performance of the heat exchanger can be further improved, meanwhile, the heat exchange tubes in different flows share part of fins, the temperature difference between the heat exchange tubes in different flows is reduced, and the whole heat exchange performance of the heat exchanger is favorably improved.

And the first heat exchange tube of the heat exchanger of this application embodiment only has first straight section and first crooked section, and first straight section links to each other with first subassembly, has simplified the structure of first heat exchange tube, makes things convenient for the processing of first heat exchange tube.

In some embodiments, the first heat exchange tube and the third heat exchange tube are arranged at intervals in the length direction of the first assembly, the first assembly comprises a plurality of second pieces, each second piece is connected with the other end of the first straight section and is connected with one end of the third heat exchange tube, each second piece corresponds to one first heat exchange tube and one third heat exchange tube, and the plurality of second pieces are arranged in parallel in the length direction of the first assembly.

The embodiment of the application also provides a refrigeration air-conditioning system with the heat exchanger, the refrigeration air-conditioning system comprises a compressor, a throttling element and a plurality of heat exchangers, and at least one heat exchanger is the heat exchanger in any one of the above embodiments. The heat exchanger works in the refrigeration air-conditioning system of the embodiment of the application, and the heat exchange performance of the heat exchanger is improved.

According to the refrigeration air conditioning system of the embodiment of the application, when the heat exchanger works as an evaporator under the evaporation working condition, the heat exchanger can slow down the frosting condition at the inlet, and the heat exchange efficiency of the heat exchanger is favorably improved.

According to the refrigeration air conditioning system of the embodiment of the application, when the heat exchanger works under the condensation working condition as a condenser, the flow of the refrigerant in the heat exchange pipe is increased, and the heat exchange capacity of the heat exchanger can be improved.

The refrigeration air-conditioning system according to the embodiment of the application can be a heat pump refrigeration air-conditioning system, the heat exchanger in the heat pump refrigeration air-conditioning system is used as an outdoor heat exchanger, and the heat exchanger is respectively used as a condenser and an evaporator when the heat pump refrigeration air-conditioning system is used in a refrigeration mode and a heating mode.

The refrigeration air-conditioning system according to the embodiment of the application can also comprise a plurality of heat exchangers, and the plurality of heat exchangers are respectively used as an evaporator and a condenser in the refrigeration air-conditioning system.

Drawings

FIG. 1 is an exemplary perspective view of a heat exchanger according to an embodiment of the present application.

Fig. 2 is a partially enlarged schematic view of the heat exchanger of fig. 1.

Fig. 3 is a schematic front view of the heat exchanger of fig. 1, wherein the first header is not shown.

FIG. 4 is another exemplary isometric view of a heat exchanger according to an embodiment of the present application.

Fig. 5 is a schematic front view of the heat exchanger of fig. 4, wherein the first header is not shown.

FIG. 6 is a further exemplary isometric view of a heat exchanger according to an embodiment of the present application.

FIG. 7 is a perspective schematic view of a heat exchanger according to another embodiment of the present application.

Fig. 8 is an enlarged partial schematic view of the heat exchanger of fig. 7.

Fig. 9 is a schematic front view of the heat exchanger of fig. 7, wherein the first header and the first stack are not shown.

Fig. 10 is a left side schematic view of the heat exchanger of fig. 7, with the first header and the first stack not shown.

Fig. 11 is a schematic front view of a heat exchanger according to yet another embodiment of the present application, wherein the first header is not shown.

Fig. 12 is a left side schematic view of the heat exchanger of fig. 11.

FIG. 13 is a schematic diagram of a refrigerated air conditioning system according to an embodiment of the present application.

Reference numerals:

a heat exchanger 100;

a first header 10; a first inlet/outlet pipe 11;

a second header 20; the second inlet and outlet pipe 21;

a first component 30; a first piece 31; a second piece 32;

a heat exchange pipe 40; a first heat exchange pipe 41; a first straight section 411; a first curved section 412; a second curved section 413; a second heat exchange tube 42; a third heat exchange tube 43; a second straight section 431; a third curved segment 432; a spacer 44; a guard 45;

the first fin 51; the second fins 52;

a second assembly 60; a third piece 61;

a refrigeration air conditioning system 200;

a compressor 300; a throttle member 400; outdoor heat exchanger 500, indoor heat exchanger 600.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the device or fixture in question must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

A heat exchanger 100 according to an embodiment of one aspect of the present application is described below with reference to fig. 1-6.

As shown in fig. 1 to 6, a heat exchanger 100 according to an embodiment of the present application includes a first header 10, a second header 20, a first block 30, a plurality of first heat exchange tubes 41, a plurality of second heat exchange tubes 42, and a plurality of first fins 51. Here, the term "plurality" means two or more.

The first header 10 includes a peripheral wall and a main passage (not shown) surrounded by the peripheral wall, and the heat exchanger 100 further includes a first inlet/outlet pipe 11 and a fourth member (not shown), the first inlet/outlet pipe 11 communicating with the first header 10. At least a portion of the fourth piece is located within the first header 10, and the fourth piece extends a predetermined distance along the length of the first header 10 (e.g., left and right in fig. 1). The main channel comprises a first flow channel and a second flow channel, the fourth element is positioned between the first flow channel and the second flow channel, the first flow channel is communicated with the first inlet and outlet pipe 11, and the second flow channel is communicated with the first heat exchange pipe 41. The fourth piece is equipped with a plurality of through-holes, and the through-hole intercommunication first runner and second runner.

As shown in fig. 1 to 5, the first heat exchange tube 41 and the second heat exchange tube 42 have a cross-sectional outer peripheral profile of a generally flat shape. A plurality of first heat exchange tubes 41 are arranged at intervals along the length direction of the first header 10. The first heat exchange tube 41 includes a first bent section 412 and a first straight section 411, one end (e.g., the lower end of the first bent section 412 in fig. 2) of the first bent section 412 is connected to the first header 10, the other end (e.g., the upper end of the first bent section 412 in fig. 2) of the first bent section 412 is connected to one end (e.g., the lower end of the first straight section 411 in fig. 2) of the first straight section 411, and the other end (e.g., the upper end of the first straight section 411 in fig. 3) of the first straight section 411 is connected to the first block 30 to communicate the first header 10 and the first block 30. The length direction of the part of the first curved section 412 is angled to the length direction of the first straight section 411. That is, as shown in fig. 2, the first curved section 412 is curved forward relative to the first straight section 411, and a part of the first curved section 412 is a straight section, a length direction of the straight section is at an angle with a length direction of the first straight section 411, and the angle is less than 90 °.

Therefore, the first heat exchange tube 41 is connected with the first collecting pipe 10 through the first bending section 412, the first straight section 411 can be parallel and adjacent to the second heat exchange tube 42, so that the first straight section 411 and the second heat exchange tube 42 can share fins and exchange heat through the shared fins, and further heat of the second heat exchange tube 42 can be transferred to the first straight section 411.

A plurality of second heat exchange tubes 42 are arranged at intervals along the length direction (left-right direction in fig. 1) of the second header 20. One end of the second heat exchange tube 42 (e.g., the upper end of the second heat exchange tube 42 in fig. 3) is connected to the first header 30, and the other end of the second heat exchange tube 42 (e.g., the lower end of the second heat exchange tube 42 in fig. 3) is connected to the second header 20 to communicate the first header 30 and the second header 20. The first and second

heat exchange pipes

41 and 42 are arranged at intervals in the length direction of the first module 30. It should be noted that the "spaced arrangement" is to be understood broadly. For example, one or more second heat exchange pipes 42 may be disposed between adjacent two first heat exchange pipes 41; one or more first heat exchange pipes 41 may be disposed between adjacent two second heat exchange pipes 42.

As shown in fig. 1, in the length direction (left-right direction in fig. 1) of the first module 30, one end of a first fin 51 (left end of the first fin 51 in fig. 1) is connected to a first straight section 411 of the first heat exchange tube 41, the other end of the first fin 51 (right end of the first fin 51 in fig. 1) is connected to the second heat exchange tube 42, the first straight section 411 is disposed adjacent to the second heat exchange tube 42, and the number of the first fins 51 is two or more. That is, as shown in fig. 1, the first straight section 411 of at least one first heat exchange tube 41 is located between two second heat exchange tubes 42 in the left-right direction, and at least one second heat exchange tube 42 is located between two first heat exchange tubes 41 in the left-right direction, and the first fin 51 is connected between the adjacent first straight section 411 and second heat exchange tube 42.

In some embodiments, a first fin 51 is also disposed between two adjacent first straight sections 411 and between two adjacent second heat exchange tubes 42. It is understood that one end of a part of the first fins 51 is connected to one of two adjacent first flat sections 411, and the other end of the first fin 51 is connected to the other of two adjacent first flat sections 411; one end of a part of the first fin 51 is connected to one of the two adjacent second heat exchange tubes 42, and the other end of the first fin 51 is connected to the other of the two adjacent second heat exchange tubes 42.

Therefore, the first heat exchange tubes 41 and the second heat exchange tubes 42 of the heat exchanger 100 according to the embodiment of the application are both communicated with the first assembly 30, and the first heat exchange tubes 41 and the second heat exchange tubes 42 are alternately arranged in the length direction of the first assembly 30, so that the flow of a refrigerant in the heat exchange tubes 40 is increased, meanwhile, the heat exchange tubes in different flows share part of the first fins 51, the temperature difference among the heat exchange tubes in different flows is reduced, and the improvement of the overall heat exchange performance of the heat exchanger is facilitated.

In some embodiments, when the multichannel heat exchanger is used in a refrigeration, air-conditioning and heat pump system, a mode that a collecting pipe is horizontal and a flat pipe (heat exchange pipe) is vertical is generally adopted. For a multi-channel heat exchanger with a single-flow structure, when the heat exchanger is used as an evaporator, under certain working conditions, when the evaporation temperature at an inlet is lower than 0 ℃, the surfaces of flat pipes and fins at the inlet of the evaporator usually frost seriously. Frosting can seriously affect the heat exchange performance of the heat exchanger, so that the heat exchange capacity of the heat exchanger is attenuated.

From this, according to the heat exchanger 100 of the embodiment of the application, the first heat exchange tube 41 and the second heat exchange tube 42 are both communicated with the first component 30, and the first heat exchange tube 41 and the second heat exchange tube 42 are arranged at intervals in the length direction of the first component 30, the flow of the refrigerant in the heat exchange tube 40 is increased, and then the heat exchange capacity of the heat exchanger 100 as a condenser can be improved, the pressure drop of the refrigerant in the heat exchange tube 40 is also increased, and further the evaporation temperature of the heat exchanger 100 at the refrigerant inlet under the evaporation working condition is improved, so that the frosting on the surface of the fin at the refrigerant inlet of the heat exchanger 100 is facilitated to be reduced, and the heat exchange efficiency of the heat exchanger 100 is facilitated to be maintained.

In addition, according to the heat exchanger 100 of the embodiment of the present application, when in an evaporation working condition, the refrigerant enters the first heat exchange tube 41 from the first collecting pipe 10, the first fins 51 are connected between the first straight section 411 and the second heat exchange tube 42 of the adjacent first heat exchange tube 41, and the number of the first fins 51 is two or more, the first fins 51 are fins shared by the first heat exchange tube 41 and the second heat exchange tube 42, the surface temperature of the second heat exchange tube 42 is higher than that of the first heat exchange tube 41, and the heat of the second heat exchange tube 42 is transferred to the first heat exchange tube 41 through the shared fins, so that the frosting on the surface of the fins connected with the first heat exchange tube 41 can be further inhibited, and the heat exchange efficiency of the heat exchanger 100 can be improved.

In some embodiments, as shown in fig. 1-5, the first assembly 30 includes a first member 31, the first member 31 is a first intermediate header, the other ends of the first plurality of straight sections 411 are connected to the first member 31, and one ends of the second plurality of heat exchange tubes 42 are connected to the first member 31. It will be appreciated that the first assembly 30 also includes end caps disposed at the left and right ends of the first intermediate header 31. The refrigerant enters the first heat exchange tube 41 from the first inlet and outlet tube 11, the refrigerant in the first heat exchange tube 41 enters the second heat exchange tube 42 after converging in the first intermediate collecting pipe 31, and the refrigerant in the second heat exchange tube 42 flows out from the second inlet and outlet tube 21; or, the refrigerant enters the second heat exchange tube 42 from the second inlet/outlet tube 21, the refrigerant in the second heat exchange tube 42 converges at the first intermediate collecting pipe 31 and then enters the first heat exchange tube 41, and the refrigerant in the first heat exchange tube 41 flows out from the first inlet/outlet tube 11.

In some embodiments, as shown in fig. 4 and 5, the first header 10 and the second header 20 are spaced apart from each other up and down. And the length of the first heat exchange tube 41 is less than that of the second heat exchange tube 42, and the joint of the second heat exchange tube 42 and the second collecting pipe 20 is not adjacent to the joint of the first heat exchange tube 41 and the first collecting pipe 10, when the heat exchanger 100 works under a condensation working condition, heat exchange between a high-temperature superheated refrigerant entering the second heat exchange tube 42 and a supercooled refrigerant in the first heat exchange tube 41 can be reduced, and heat loss of the high-temperature superheated refrigerant in the second heat exchange tube 42 is avoided. Thus, the heat exchanger 100 of the embodiment of the present application can reduce heat loss.

As shown in fig. 4 and 5, the heat exchanger 100 of the embodiment of the present application further includes a spacer 44, and a length direction of the spacer 44 is substantially parallel to a length direction (vertical direction in fig. 5) of the second heat exchange tube 42. The first bent section 412 of at least a portion of the first heat exchange pipe 41 is juxtaposed with the spacers 44 in the width direction of the first straight section 411, and at least 2 spacers 44 are disposed adjacent to the second heat exchange pipe 42 in the length direction of the first module 30. That is, the spacer 44 is located between the first straight section 411 and the second header 20 in the length direction of the second heat exchange tube 42. In particular, the peripheral profile of the spacer 44 is also substantially flat. Thus, the spacers 44 are filled in the gap between the first straight section 411 and the second header 20, which facilitates the installation of the heat exchanger 100 according to the embodiment of the present application. And the air leakage of the gap between the first straight section 411 and the second collecting pipe 20 when the heat exchanger 100 works can be avoided, so that the heat exchange effect of the heat exchanger 100 of the embodiment of the present application can be improved.

In some embodiments, the heat exchanger 100 of the present embodiment further includes a second fin 52, the second fin 52 being disposed at least between the second heat exchange tube 42 and the spacer 44 that are adjacent in the length direction of the first module 30, and/or the second fin 52 being disposed at least between the spacer 44 that are adjacent in the length direction of the first module 30. That is, one end of a portion of the second fin 52 (e.g., the left end of the second fin 52 in fig. 5) is connected to the second heat exchange tube 42, the other end of the second fin 52 (e.g., the right end of the second fin 52 in fig. 5) is connected to the spacer 44, and the second heat exchange tube 42 is disposed adjacent to the spacer 44; and/or one end of a portion of the second fin 52 is connected to one of the two adjacent spacers 44 and the other end of the second fin 52 is connected to the other of the two adjacent spacers 44. Thus, the spacer 44 is attached and positioned by the second fin 52, and the first fin 51 and the second fin 52 can be distributed over the entire heat exchanger 100, and the heat exchange area between the heat exchanger 100 of the embodiment of the present application and the air can be increased. In addition, in the heat exchanger 100 of the embodiment of the present application, the first heat exchange tube 41 is only in contact with the first fin 51, and the second heat exchange tube 42 is also in contact with the second fin 52, so that the heat exchange area between the first heat exchange tube 41 and the second heat exchange tube 42 is reduced, and thus the direct heat exchange at the end portions of the first heat exchange tube 41 and the second heat exchange tube 42 of the heat exchanger 100 of the embodiment of the present application can be reduced.

In some embodiments, as shown in fig. 4 and 5, the plurality of second heat exchange tubes 42 are divided into a plurality of second heat exchange tube 42 groups, each of the second heat exchange tube 42 groups includes at least two second heat exchange tubes 42, and the second heat exchange tube 42 groups and the first heat exchange tubes 41 are arranged at intervals in the length direction of the first module 30. That is, the number of the first heat exchanging pipes 41 is smaller than that of the second heat exchanging pipes 42, i.e., the heat exchanging area of the second heat exchanging pipes 42 is larger than that of the first heat exchanging pipes 41. Therefore, the heat exchange performance of the heat exchanger 100 of the embodiment of the present application is improved.

In some embodiments, as shown in fig. 1 and 4, the heat exchanger 100 of the present embodiment further includes a shielding member 45, and the shielding member 45 is connected to the outermost heat exchange tube of the heat exchanger 100 of the present embodiment. Specifically, the guard 45 is two, and the outer peripheral profile of the cross section of the guard 45 is substantially flat. One of the shielding members 45 is provided with a first fin 51 between the leftmost side of the heat exchanger 100 and the second heat exchange tube 42 adjacent thereto, and the other shielding member 45 is provided with a first fin 51 between the rightmost side of the heat exchanger 100 and the second heat exchange tube 42 adjacent thereto. Thus, the shielding member 45 shields the heat exchanger 100 according to the embodiment of the present application.

In some embodiments, as shown in fig. 6, the first and second

heat exchange pipes

41 and 42 are arranged at intervals in the length direction of the first module 30. That is, one second heat exchanging pipe 42 is disposed between two first heat exchanging pipes 41, and one first heat exchanging pipe 41 is disposed between two second heat exchanging pipes. In other words, the plurality of first heat exchange tubes 41 and the plurality of second heat exchange tubes 42 constitute a plurality of heat exchange tube 40 groups, the heat exchange tube 40 groups include one first heat exchange tube 41 and one second heat exchange tube 42, and in the heat exchange tube 40 groups, the first heat exchange tubes 41 and the second heat exchange tubes 42 are alternately arranged in the same regular pattern in the length direction of the first module 30.

In some embodiments, as shown in FIG. 6, first component 30 includes a second piece 32, second piece 32 is multiple, and second piece 32 has a generally flat cross-sectional profile. Each of the second pieces 32 is connected to the other end of the first straight section 411, and the second piece 32 is also connected to one end of the second heat exchange pipe 42. Each of the second members 32 corresponds to one first heat exchange tube 41 and one second heat exchange tube 42, and a plurality of the second members 32 are arranged side by side along the length direction of the first module 30. Therefore, the plurality of second heat exchange tubes 32 reduce the inner volume of the heat exchanger 100 in the embodiment of the present application, thereby reducing the refrigerant charge amount, and the adjacent first heat exchange tubes 41 and second heat exchange tubes 42 are communicated through the corresponding second heat exchange tubes 32, so that the heat exchanger 100 in the embodiment of the present application has a compact structure. It is understood that the second member 32 may be integral with the first heat exchange tube 41 and the second heat exchange tube 42, i.e., the first heat exchange tube 41 and the second heat exchange tube 42 are formed by bending one heat exchange tube 40, and the second member 32 is a bent section of the heat exchange tube 40. Alternatively, the second member 32 may be a separate intermediate heat exchange tube 40, the middle portion of the second member 32 being bent, one end of the second member 32 being downwardly inserted into the upper end of the first straight section 411 of the first heat exchange tube 41, and the other end of the second member 32 being downwardly inserted into the upper end of the second heat exchange tube 42.

In some embodiments, the width of the first heat exchange tube 41 and the width of the second heat exchange tube 42 may not be the same, the width of the second heat exchange tube 42 may be greater than the width of the first heat exchange tube 41, the first header 10 and the second header 20 are both circular tubes, and the inner diameter of the second header 20 may be greater than the inner diameter of the first header 10. When the heat exchanger 100 of the embodiment of the application works under the condensation working condition, the inlet refrigerant is in the superheated gas state, the outlet refrigerant is in the supercooled liquid state, the volume of the inlet refrigerant is far larger than that of the outlet refrigerant, at the moment, the second collecting pipe 20 is used as an inlet pipe and is connected with the refrigerant inlet of the heat exchanger, and the first collecting pipe 10 is used as an outlet pipe and is connected with the refrigerant outlet of the heat exchanger. Therefore, the inner volumes of the second heat exchange tube 42 and the second collecting pipe 20 of the heat exchanger 100 in the embodiment of the present application are greater than the inner volumes of the first heat exchange tube 41 and the first collecting pipe 10, which is beneficial to improving the heat exchange performance of the heat exchanger in the embodiment of the present application. It is understood that the width of the first heat exchange tube 41 may be larger than that of the second heat exchange tube 42, and the inner diameter of the first collecting pipe 10 may be larger than that of the second collecting pipe 20.

A heat exchanger 100 according to an embodiment of another aspect of the present application is described below with reference to fig. 7-10.

As shown in fig. 7 to 10, the heat exchanger 100 according to the embodiment of the present application includes a first header 10, a second header 20, a first block 30, a second block 60, a plurality of first heat exchange tubes 41, a plurality of second heat exchange tubes 42, a plurality of third heat exchange tubes 43, and a plurality of first fins 51 (two or more first fins 51).

The first header 10 includes a peripheral wall and a main channel (not shown) surrounded by the peripheral wall, and the heat exchanger 100 further includes a first inlet/outlet pipe 11 and a fourth member (not shown), wherein the first inlet/outlet pipe 11 is communicated with the first header 10. At least a portion of the fourth piece is located within the first header 10, and the fourth piece extends a predetermined distance along the length of the first header 10 (e.g., left and right in fig. 7). The main channel comprises a first flow channel and a second flow channel, the fourth element is positioned between the first flow channel and the second flow channel, the first flow channel is communicated with the first inlet and outlet pipe 11, and the second flow channel is communicated with the first heat exchange pipe 41. The fourth piece is equipped with a plurality of through-holes, and the through-hole intercommunication first runner and second runner.

As shown in fig. 7, the first assembly 30 includes a first member 31, and the first member 31 is a first intermediate header 31. It will be appreciated that the first assembly 30 also includes end caps disposed at the left and right ends of the first intermediate header 31.

As shown in fig. 7 to 10, the first heat exchange tube 41, the second heat exchange tube 42 and the third heat exchange tube 43 have a cross-sectional outer peripheral profile of a substantially flat shape. A plurality of first heat exchange tubes 41 are arranged at intervals along the length direction of the first header 10. The first heat exchange tube 41 includes a first curved section 412, a second curved section 413, and a first straight section 411. One end of the first curved section 412 (e.g., the lower end of the first curved section 412 in fig. 8) is connected to the first header 10, the other end of the first curved section 412 (e.g., the upper end of the first curved section 412 in fig. 8) is connected to one end of the first straight section 411 (e.g., the lower end of the first straight section 411 in fig. 8), the other end of the first straight section 411 (e.g., the upper end of the first straight section 411 in fig. 8) is connected to one end of the second curved section 413 (e.g., the lower end of the second curved section 413 in fig. 8), and the other end of the second curved section 413 (e.g., the upper end of the second curved section 413 in fig. 8) is connected to the first member 31 to communicate the first header 10 and the first member 31.

As shown in fig. 8, the length direction of the partial pipe section of the first bending section 412 is angled with respect to the length direction of the first straight section 411, and the length direction of the partial pipe section of the second bending section 413 is angled with respect to the length direction of the first straight section 411. That is, the first curved section 412 is curved forward relative to the first straight section 411, and a portion of the first curved section 412 is a straight section, a length direction of the straight section is at an angle with a length direction of the first straight section 411, and the angle is less than 90 °. The second bending section 413 is bent forward relative to the first straight section 411, and a part of the second bending section 413 is also a straight section, the length direction of the straight section is at an angle with the length direction of the first straight section 411, and the angle is smaller than 90 °.

As shown in fig. 7 and 8, a plurality of second heat exchange tubes 42 are arranged at intervals along the length direction of the second header 20 (in the left-right direction in fig. 7). One end of the second heat exchange tube 42 (e.g., the lower end of the second heat exchange tube 42 in fig. 7) is connected to the second header 60, and the other end of the second heat exchange tube 42 (e.g., the upper end of the second heat exchange tube 42 in fig. 7) is connected to the second header 20 to communicate the second module 60 with the second header 20.

As shown in fig. 7 and 8, a plurality of third heat exchange tubes 43 are arranged at intervals in the length direction (left-right direction in fig. 7) of the first member 31. The third heat exchange tube 43 includes a third curved section 432 and a second straight section 431. One end of the third curved section 432 (e.g., the upper end of the third curved section 432 in fig. 8) is connected to the first member 31, the other end of the third curved section 432 (e.g., the lower end of the third curved section 432 in fig. 8) is connected to one end of the second straight section 431 (e.g., the upper end of the second straight section 431 in fig. 8), and the other end of the second straight section 431 (e.g., the lower end of the second straight section 431 in fig. 8) is connected to the second member 60 to communicate the first member 31 and the second member 60. The length direction of the part of the third curved section 432 is angled to the length direction of the second straight section 431. That is, the third curved section 432 is curved forward relative to the second straight section 431, and a portion of the third curved section 432 is a straight section having a length direction that forms an angle with a length direction of the second straight section 431, and the angle is less than 90 °

As shown in fig. 7, the first heat exchanging pipe 41, the second heat exchanging pipe 42 and the third heat exchanging pipe 43 are arranged at intervals in the length direction of the first member 31. It should be noted here that the "spaced arrangement" is to be understood broadly. For example, one or more second heat exchange tubes 42 and one or more third heat exchange tubes 43 may be disposed between adjacent two of the first heat exchange tubes 41, one or more first heat exchange tubes 41 and one or more third heat exchange tubes 43 may be disposed between adjacent two of the second heat exchange tubes 42, and one or more first heat exchange tubes 41 and one or more second heat exchange tubes 42 may be disposed between adjacent two of the third heat exchange tubes 43.

As shown in fig. 7 and 8, in the length direction of the first member 31, one end of the first fin 51 (e.g., the left end of the first fin 51 in fig. 8) is connected to the first straight section 411 of the first heat exchange tube 41, the other end of the first fin 51 (e.g., the right end of the first fin 51 in fig. 8) is connected to the second heat exchange tube 42, the first straight section 411 of the first heat exchange tube 41 and the second heat exchange tube 42 are disposed adjacent to each other in the length direction of the first member 31, and the number of the first fins 51 is two or more. That is, as shown in fig. 7, the first straight section 411 of at least one first heat exchange tube 41 is located between two second heat exchange tubes 42 in the left-right direction, and at least one second heat exchange tube 42 is located between two first heat exchange tubes 41 in the left-right direction, and the first fin 51 is connected between the adjacent first straight section 411 and second heat exchange tube 42.

In some embodiments, the first fins 51 are also disposed between the first straight section 411 of the adjacent first heat exchange tube 41 and the second straight section 431 of the third heat exchange tube 43, between the adjacent second straight section 431 and the second heat exchange tube 42, between the adjacent two first straight sections 411, between the two adjacent second heat exchange tubes 42, and between the two adjacent second straight sections 431. It is understood that one end of a part of the first fin 51 is connected to the first straight section 411, and the other end of the first fin 51 is connected to the second straight section 431 adjacent to the first straight section 411; one end of a part of the first fins 51 is connected to the second straight section 431, and the other end of the first fins 51 is connected to the second heat exchange tube 42 adjacent to the second straight section 431; one end of a part of the first fins 51 is connected to one of two adjacent first flat sections 411, and the other end of the first fin 51 is connected to the other of the two adjacent first flat sections 411; one end of a part of the first fin 51 is connected to one of the two adjacent second heat exchange tubes 42, and the other end of the first fin 51 is connected to the other of the two adjacent second heat exchange tubes 42; one end of a part of the first fin 51 is connected to one of two adjacent second straight sections 431, and the other end of the first fin 51 is connected to the other of the two adjacent second straight sections 431.

Therefore, the first heat exchange tube 41 and the third heat exchange tube 43 of the heat exchanger 100 according to the embodiment of the application are both communicated with the first component 31, the third heat exchange tube 43 and the second heat exchange tube 42 are also communicated with the second component 60, and the first heat exchange tube 41, the second heat exchange tube 42 and the second heat exchange tube 42 are arranged at intervals in the length direction of the first component 31, so that the flow of the refrigerant in the heat exchange tube 40 is further increased, the heat exchange capacity of the heat exchanger 100 as a condenser can be further improved, the pressure drop of the refrigerant in the heat exchange tube 40 is further increased, and the heat exchange efficiency of the heat exchanger 100 is improved.

In addition, when the heat exchanger 100 according to the embodiment of the application is used as an evaporator under an evaporation working condition, a refrigerant can be arranged to enter the first heat exchange tube 41 from the first collecting pipe 10, the first fin 51 is connected between the first straight section 411 of the adjacent first heat exchange tube 41 and the second heat exchange tube 42, the number of the first fins 51 is two or more, the first fin 51 is a fin shared by the first heat exchange tube 41 and the second heat exchange tube 42, the refrigerant flows through the third heat exchange tube 43 and then enters the second heat exchange tube 42, the surface temperature of the second heat exchange tube 42 is the highest among the first heat exchange tube 41, the second heat exchange tube 42 and the third heat exchange tube 43, and the heat of the second heat exchange tube 42 is transferred to the first heat exchange tube 41 through the shared fin, so that the frosting on the surface of the fin connected with the first heat exchange tube 41 can be reduced, and the heat exchange efficiency of the heat exchanger 100 is improved.

In some embodiments, as shown in fig. 7, the heat exchanger 100 of the present embodiment further includes a shielding member 45, and the shielding member 45 is connected to the outermost heat exchange tube of the heat exchanger 100 of the present embodiment. Specifically, the guard 45 is two, and the outer peripheral profile of the cross section of the guard 45 is substantially flat. One of the shielding members 45 is provided with a first fin 51 between the leftmost side of the heat exchanger 100 and the second heat exchange tube 42 adjacent thereto, and the other shielding member 45 is provided with a first fin 51 between the rightmost side of the heat exchanger 100 and the second heat exchange tube 42 adjacent thereto. Thus, the shielding member 45 shields the heat exchanger 100 according to the embodiment of the present application.

In some embodiments, as shown in fig. 7, 9 and 10, the second module 60 includes a third member 61, the third member 61 is a second intermediate heat exchange tube, one end of each of the plurality of second heat exchange tubes 42 is connected to the third member 61, and the other end of each of the plurality of second flat sections 431 is connected to the third member 61. It will be appreciated that the second assembly 60 also includes end caps provided at the left and right ends of the second intermediate header 61. The refrigerant enters the first heat exchange tube 41 from the first inlet and outlet tube 11, the refrigerant in the first heat exchange tube 41 enters the third heat exchange tube 43 after converging at the first intermediate collecting tube 31, the refrigerant in the third heat exchange tube 43 enters the second heat exchange tube 42 after converging at the second intermediate collecting tube, and the refrigerant in the second heat exchange tube 42 flows out from the second inlet and outlet tube 21; or, the refrigerant enters the second heat exchange tube 42 from the second inlet/outlet tube 21, the refrigerant in the second heat exchange tube 42 enters the third heat exchange tube 43 after converging at the second intermediate collecting tube, the refrigerant in the third heat exchange tube 43 enters the first heat exchange tube 41 after converging at the first intermediate collecting tube 31, and the refrigerant in the first heat exchange tube 41 flows out from the first inlet/outlet tube 11.

Therefore, the third heat exchange tube 43 further increases the flow path of the refrigerant, and further improves the heat exchange capacity of the heat exchanger 100. The third heat exchange tube 43 further increases the pressure drop of the refrigerant in the heat exchange tube 40, and further improves the heat exchange efficiency of the heat exchanger 100.

In some embodiments, as shown in fig. 7, the second header 20 and the first member 31 are spaced above and below one another. And the length of the first heat exchange tube 41 is smaller than that of the second heat exchange tube 42, and the top of the second heat exchange tube 42 is not adjacent to the first heat exchange tube 41, so that direct heat exchange between the refrigerant of the second heat exchange tube 42 and the refrigerant of the first heat exchange tube 41 is reduced. Thus, the heat exchanger 100 of the embodiment of the present application can reduce heat loss.

As shown in fig. 7 and 9, the heat exchanger 100 of the embodiment of the present application further includes a spacer 44, and a length direction of the spacer 44 is substantially parallel to a length direction (vertical direction in fig. 9) of the second heat exchange tube 42. At least a portion of the second bent section 413 of the first heat exchange tube 41 and at least a portion of the third bent section 432 of the third heat exchange tube 43 are disposed in parallel with the spacers 44 in the width direction of the first straight section 411, and at least 2 spacers 44 are disposed adjacent to the second heat exchange tube 42 in the length direction of the first module 30. That is, a part of the spacer 44 is located between the first straight section 411 and the second header 20 in the length direction of the second heat exchange tube 42, and another part of the spacer 44 is located between the second straight section 431 and the second header 20 in the length direction of the second heat exchange tube 42. In particular, the peripheral profile of the spacer 44 is also substantially flat. Thus, the spacers 44 are filled in the gaps between the first straight section 411 and the second header 20 and between the second straight section 431 and the second header 20, so that the heat exchanger 100 of the embodiment of the present application is convenient to mount. And air leakage from gaps between the first straight section 411 and the second header 20 and from gaps between the second straight section 431 and the second header 20 can be avoided, so that the heat exchange effect of the heat exchanger 100 of the embodiment of the present application can be improved.

In some embodiments, the heat exchanger 100 of the present embodiment further includes a second fin 52, the second fin 52 being disposed at least between the second heat exchange tube 42 and the spacer 44 that are adjacent in the length direction of the second header 20, and/or the second fin 52 being disposed at least between the spacer 44 that are adjacent in the length direction of the second header 20. That is, one end of a part of the second fin 52 (e.g., the left end of the second fin 52 in fig. 9) is connected to the second heat exchange tube 42, the other end of the second fin 52 (e.g., the right end of the second fin 52 in fig. 9) is connected to the spacer 44, and the second heat exchange tube 42 is disposed adjacent to the spacer 44; and/or one end of a portion of the second fin 52 is connected to one of the two adjacent spacers 44 and the other end of the second fin 52 is connected to the other of the two adjacent spacers 44. Thus, the spacer 44 is attached and positioned by the second fin 52, and the first fin 51 and the second fin 52 can be distributed over the entire heat exchanger 100, and the heat exchange area between the heat exchanger 100 of the embodiment of the present application and the air can be increased. In addition, in the heat exchanger 100 of the embodiment of the present application, the first heat exchange tube 41 and the third heat exchange tube 43 are only in contact with the first fin 51, and the second heat exchange tube 42 is also in contact with the second fin 52, so that the heat exchange areas between the end of the first heat exchange tube 41 and the end of the second heat exchange tube 42 and between the third heat exchange tube 43 and the second heat exchange tube 42 are reduced, thereby being beneficial to improving the heat exchange performance.

In some embodiments, as shown in fig. 7 and 9, the plurality of second heat exchange tubes 42 are divided into a plurality of second heat exchange tube groups each including at least two second heat exchange tubes 42, and the second heat exchange tube groups, the first heat exchange tubes 41, and the third heat exchange tubes 43 are sequentially arranged in the length direction of the first member 31. In other words, the second heat exchange tube group, the first heat exchange tube 41, and the third heat exchange tube 43 are sequentially arranged in a fixed arrangement order (the second heat exchange tube group, the first heat exchange tube 41, and the third heat exchange tube 43) in the length direction of the first member 31. That is, the number of the first heat exchange tubes 41 and the number of the third heat exchange tubes 43 are both smaller than the number of the second heat exchange tubes 42, i.e., the heat exchange area of the second heat exchange tubes 42 is larger than the heat exchange area of the first heat exchange tubes 41. Thus, the heat exchanger 100 of the embodiment of the present application can configure the number of the first and second

heat exchanging pipes

10 and 20 according to the application.

In some embodiments, the width of the second heat exchange tube 42 may be smaller than that of the third heat exchange tube 43, the width of the third heat exchange tube 43 is smaller than that of the first heat exchange tube 41, the first collecting pipe 10 and the second collecting pipe 20 are both circular pipes, and the inner diameter of the second collecting pipe 20 is smaller than that of the first collecting pipe 10. Therefore, the inner volumes of the second heat exchange tube 42 and the second collecting pipe 20 and the inner volumes of the first heat exchange tube 41 and the first collecting pipe 10 of the heat exchanger 100 in the embodiment of the application can be set differently, the use of the heat exchanger 100 cannot be influenced, and the filling amount of the refrigerant can be reduced.

A heat exchanger 100 according to an embodiment of yet another aspect of the present application is described below with reference to fig. 11 and 12.

As shown in fig. 11 and 12, the heat exchanger 100 according to the embodiment of the present application includes a first header 10, a second header 20, a first block 30, a second block 60, a plurality of first heat exchange tubes 41, a plurality of second heat exchange tubes 42, a plurality of third heat exchange tubes 43, and a plurality of first fins 51 (two or more first fins 51).

The first header 10 includes a peripheral wall and a main passage (not shown) surrounded by the peripheral wall, and the heat exchanger 100 further includes a first inlet/outlet pipe 11 and a fourth member (not shown), the first inlet/outlet pipe 11 communicating with the first header 10. At least a portion of the fourth piece is located within the first header 10, and the fourth piece extends a predetermined distance along the length of the first header 10 (e.g., left and right in fig. 11). The main channel comprises a first flow channel and a second flow channel, the fourth element is positioned between the first flow channel and the second flow channel, the first flow channel is communicated with the first inlet and outlet pipe 11, and the second flow channel is communicated with the first heat exchange pipe 41. The fourth piece is equipped with a plurality of through-holes, and the through-hole intercommunication first runner and second runner.

As shown in fig. 11 and 12, the first heat exchange tube 41, the second heat exchange tube 42 and the third heat exchange tube 43 have a cross-sectional outer peripheral profile of a substantially flat shape. A plurality of first heat exchange tubes 41 are arranged at intervals along the length direction of the first header 10. The first heat exchange tube 41 includes a first curved section 412 and a first straight section 411. One end of the first curved section 412 (e.g., the lower end of the first curved section 412 in fig. 11) is connected to the first header 10, the other end of the first curved section 412 (e.g., the upper end of the first curved section 412 in fig. 11) is connected to one end of the first straight section 411 (e.g., the lower end of the first straight section 411 in fig. 11), and the other end of the first straight section 411 (e.g., the upper end of the first straight section 411 in fig. 11) is connected to the first assembly 30 to communicate the first header 10 and the first assembly 30.

As shown in fig. 12, the length direction of the partial pipe section of the first curved section 412 is angled with respect to the length direction of the first straight section 411. That is, the first curved section 412 is curved forward relative to the first straight section 411, and a part of the first curved section 412 is a straight section, a length direction of the straight section is at an angle with a length direction of the first straight section 411, and the angle is less than 90 °.

As shown in fig. 11, a plurality of second heat exchange tubes 42 are arranged at intervals along the length direction (left-right direction in fig. 11) of the second header 20. One end of the second heat exchange tube 42 (e.g., the lower end of the second heat exchange tube 42 in fig. 11) is connected to the second header 60, and the other end of the second heat exchange tube 42 (e.g., the upper end of the second heat exchange tube 42 in fig. 11) is connected to the second header 20 to communicate the second module 60 with the second header 20.

As shown in fig. 11, a plurality of third heat exchange tubes 43 are arranged at intervals in the length direction (left-right direction in fig. 11) of the first module 30 or the second module 60. One end of the third heat exchange tube 43 (e.g., the upper end of the third bent section 432 in fig. 11) is connected to the first module 30, and the other end of the third heat exchange tube 43 (e.g., the lower end of the third bent section 432 in fig. 11) is connected to the second module 60 to communicate the first module 30 and the second module 60.

As shown in fig. 11, the first heat exchanging pipe 41, the second heat exchanging pipe 42 and the third heat exchanging pipe 43 are arranged at intervals in the length direction of the first module 30 or the second module 60. It should be noted here that the "spaced arrangement" is to be understood broadly. For example, one or more second heat exchange tubes 42 and one or more third heat exchange tubes 43 may be disposed between adjacent two of the first heat exchange tubes 41, one or more first heat exchange tubes 41 and one or more third heat exchange tubes 43 may be disposed between adjacent two of the second heat exchange tubes 42, and one or more first heat exchange tubes 41 and one or more second heat exchange tubes 42 may be disposed between adjacent two of the third heat exchange tubes 43.

As shown in fig. 11, in the length direction of the first module 30, one end of the first fin 51 (e.g., the left end of the first fin 51 in fig. 11) is connected to the first straight section 411 of the first heat exchange tube 41, the other end of the first fin 51 (e.g., the right end of the first fin 51 in fig. 11) is connected to the second heat exchange tube 42, the first straight section 411 of the first heat exchange tube 41 and the second heat exchange tube 42 are disposed adjacent to each other in the length direction of the first module 30, and the number of the first fins 51 is two or more. That is, as shown in fig. 11, the first straight section 411 of at least one first heat exchange tube 41 is located between two second heat exchange tubes 42 in the left-right direction, and at least one second heat exchange tube 42 is located between two first heat exchange tubes 41 in the left-right direction, and the first fin 51 is connected between the adjacent first straight section 411 and second heat exchange tube 42.

Therefore, the first heat exchange tube 41 and the third heat exchange tube 43 of the heat exchanger 100 according to the embodiment of the application are both communicated with the first component 30, the third heat exchange tube 43 and the second heat exchange tube 42 are also communicated with the second component 60, and the first heat exchange tube 41, the second heat exchange tube 42 and the second heat exchange tube 42 are arranged at intervals in the length direction of the second component 60, so that the flow of the refrigerant in the heat exchange tube 40 is further increased, the pressure drop of the refrigerant in the heat exchange tube 40 is increased, the evaporation temperature of the refrigerant inlet when the heat exchanger 100 is used as an evaporator is favorably improved, the frosting on the surface of the fin at the refrigerant inlet when the heat exchanger 100 is used as the evaporator can be further inhibited, and the heat exchange efficiency of the heat exchanger 100 is improved.

In addition, when the heat exchanger 100 according to the embodiment of the present application is used as an evaporator, a refrigerant may enter the first heat exchange tube 41 from the first header 10, the first fin 51 is connected between the first straight section 411 of the adjacent first heat exchange tube 41 and the second heat exchange tube 42, two or more first fins 51 are provided, the first fin 51 is a fin shared by the first heat exchange tube 41 and the second heat exchange tube 42, and the refrigerant flows through the third heat exchange tube 43 and then enters the second heat exchange tube 42, among the first heat exchange tube 41, the second heat exchange tube 42 and the third heat exchange tube 43, the surface temperature of the second heat exchange tube 42 is the highest, and the heat of the second heat exchange tube 42 is transferred to the first heat exchange tube 41 through the shared fin, so that frost formation on the surface of the fin connected to the first heat exchange tube 41 can be further suppressed, and the heat exchange efficiency of the heat exchanger 100 is improved.

In addition, the first heat exchange tube 41 of the heat exchanger 100 of the embodiment of the present application only has the first straight section 411 and the first curved section 412, and the first straight section 411 is connected to the first component 30, so that the structure of the first heat exchange tube 41 is simplified, and the first heat exchange tube 41 is convenient to process.

In some embodiments, as shown in fig. 11 and 12, the heat exchanger 100 of the embodiment of the present application further includes a shielding member 45, and the shielding member 45 is connected to the outermost heat exchange tube of the heat exchanger 100 of the embodiment of the present application. Specifically, the guard 45 is two, and the outer peripheral profile of the cross section of the guard 45 is substantially flat. One of the shielding members 45 is provided with a first fin 51 between the leftmost side of the heat exchanger 100 and the second heat exchange tube 42 adjacent thereto, and the other shielding member 45 is provided with a first fin 51 between the rightmost side of the heat exchanger 100 and the second heat exchange tube 42 adjacent thereto. Thus, the shielding member 45 shields the heat exchanger 100 according to the embodiment of the present application.

In some embodiments, as shown in fig. 11, the second header 20 is spaced a distance up and down from the first assembly 30. And the length of the first heat exchange tube 41 is less than that of the second heat exchange tube 42, the top of the second heat exchange tube 42 is not adjacent to the first heat exchange tube 41, and the high-temperature superheated refrigerant at the end of the second heat exchange tube 42 does not exchange heat with the supercooled refrigerant at the end of the first heat exchange tube 41. Thus, the heat exchanger 100 of the embodiment of the present application can reduce unnecessary heat loss.

As shown in fig. 11, the heat exchanger 100 of the embodiment of the present application further includes a spacer 44, and a length direction of the spacer 44 is substantially parallel to a length direction (e.g., up and down direction in fig. 11) of the second heat exchange pipe 42. At least a part of the first straight section 411 of the first heat exchange tube 41 and at least a part of the second straight section 431 of the third heat exchange tube 43 are disposed in parallel with the spacers 44 in the width direction of the first straight section 411, and at least 2 spacers 44 are disposed adjacent to the second heat exchange tube 42 in the length direction of the second module 60. That is, a part of the spacer 44 is located between the first straight section 411 and the second header 20 in the length direction of the second heat exchange tube 42, and another part of the spacer 44 is located between the second straight section 431 and the second header 20 in the length direction of the second heat exchange tube 42. In particular, the peripheral profile of the spacer 44 is also substantially flat. Thus, the spacers 44 are filled in the gaps between the first straight section 411 and the second header 20 and between the second straight section 431 and the second header 20, so that the heat exchanger 100 of the embodiment of the present application is convenient to install. And air leakage from gaps between the first straight section 411 and the second header 20 and from gaps between the second straight section 431 and the second header 20 can be avoided, so that the heat exchange effect of the heat exchanger 100 of the embodiment of the present application can be improved.

In some embodiments, the heat exchanger 100 of the present embodiment further includes a second fin 52, the second fin 52 being disposed at least between the second heat exchange tube 42 and the spacer 44 that are adjacent in the length direction of the second header 20, and/or the second fin 52 being disposed at least between the spacer 44 that are adjacent in the length direction of the second header 20. That is, one end of a part of the second fin 52 (e.g., the left end of the second fin 52 in fig. 11) is connected to the second heat exchange tube 42, the other end of the second fin 52 (e.g., the right end of the second fin 52 in fig. 11) is connected to the spacer 44, and the second heat exchange tube 42 is disposed adjacent to the spacer 44; and/or one end of a portion of the second fin 52 is connected to one of the two adjacent spacers 44 and the other end of the second fin 52 is connected to the other of the two adjacent spacers 44. Thus, the spacer 44 is attached and positioned by the second fin 52, and the first fin 51 and the second fin 52 can be distributed over the entire heat exchanger 100, and the heat exchange area between the heat exchanger 100 of the embodiment of the present application and the air can be increased. In addition, in the heat exchanger 100 of the embodiment of the present application, the first heat exchange tube 41 and the third heat exchange tube 43 are only in contact with the first fin 51, and the second heat exchange tube 42 is also in contact with the second fin 52, so that heat exchange between the end of the first heat exchange tube 41 and the end of the second heat exchange tube 42 and between the end of the third heat exchange tube 43 and the end of the second heat exchange tube 42 is reduced, and thus heat loss of the heat exchanger 100 of the embodiment of the present application can be reduced.

In some embodiments, as shown in fig. 7 and 9, the plurality of second heat exchange tubes 42 are divided into a plurality of second heat exchange tube groups each including at least two second heat exchange tubes 42, and the second heat exchange tube groups, the first heat exchange tubes 41, and the third heat exchange tubes 43 are sequentially arranged in the length direction of the first member 31. In other words, the second heat exchange tube group, the first heat exchange tube 41, and the third heat exchange tube 43 are sequentially arranged in a fixed arrangement order (the second heat exchange tube group, the first heat exchange tube 41, and the third heat exchange tube 43) in the length direction of the first member 31. That is, the number of the first heat exchanging pipes 41 and the number of the third heat exchanging pipes 43 may be set to be smaller than the number of the second heat exchanging pipes 42, i.e., the heat exchanging area of the second heat exchanging pipes 42 is larger than that of the first heat exchanging pipes 41. From this, the heat exchanger of this application embodiment is provided with through differentiated heat exchange tube quantity and does benefit to the heat transfer design that realizes optimizing in the application of difference.

In some embodiments, as shown in fig. 11, the first and third

heat exchange tubes

41 and 43 are arranged at intervals in the length direction of the first module 30. That is, one third heat exchanging tube 43 is disposed between the two first heat exchanging tubes 41, and one first heat exchanging tube 41 is disposed between the two third heat exchanging tubes 43. In other words, the plurality of first heat exchange tubes 41 and the plurality of third heat exchange tubes 43 constitute a plurality of heat exchange tube 40 groups, the heat exchange tube 40 group includes one first heat exchange tube 41 and one third heat exchange tube 43, and in the heat exchange tube 40 group, the first heat exchange tube 41 and the third heat exchange tube 43 are arranged in the same rule in the length direction of the first module 30.

In some embodiments, as shown in fig. 11, the first assembly 30 includes a second piece 32, the second piece 32 is a plurality, and the second piece 32 has a generally flat cross-sectional profile. Each of the second pieces 32 is connected to the other end of the first straight section 411, and the second piece 32 is also connected to one end of the third heat exchanging pipe 43. Each of the second pieces 32 corresponds to one of the first heat exchanging pipes 41 and one of the third heat exchanging pipes 43, and a plurality of the second pieces 32 are arranged side by side along the length direction of the first module 30. Therefore, the plurality of second heat exchange tubes 32 reduce the inner volume of the heat exchanger 100 according to the embodiment of the present application, thereby reducing the refrigerant charge amount, and the adjacent first heat exchange tube 41 and the third heat exchange tube 43 are communicated through the corresponding second heat exchange tubes 32, thereby reducing unnecessary heat loss. It is understood that the second member 32 may be integral with the first and third

heat exchange tubes

41 and 43, i.e., the first and third

heat exchange tubes

41 and 43 are formed by bending one heat exchange tube 40, and the second member 32 is a bent section of the heat exchange tube 40. Alternatively, the second member 32 may be a separate intermediate heat exchange tube 40, with the middle of the second member 32 being bent, one end of the second member 32 being downwardly inserted into the upper end of the first straight section 411 of the first heat exchange tube 41, and the other end of the second member 32 being downwardly inserted into the upper end of the third heat exchange tube 43.

In some embodiments, the width of the second heat exchange tube 42 may be smaller than that of the first heat exchange tube 41, the first collecting pipe 10 and the second collecting pipe 20 are both round pipes, and the inner diameter of the second collecting pipe 20 may be smaller than that of the first collecting pipe 10. The width of the first heat exchange tube and the second heat exchange tube of the heat exchanger 100 and the inner diameter difference of the first collecting pipe and the second collecting pipe are set, so that the filling amount of the refrigerant in the heat exchanger 100 is favorably reduced.

A refrigeration and air-conditioning system according to an embodiment of the present application will be described with reference to fig. 1 to 13.

The refrigerating and air-conditioning system 200 according to the embodiment of the present application includes a compressor 300, a throttle 400, and a plurality of heat exchangers, at least one of which is the heat exchanger 100 of any of the above embodiments.

Specifically, the plurality of heat exchangers of the refrigerating and air-conditioning system of the embodiment of the present application include the outdoor heat exchanger 400 and the indoor heat exchanger 600.

According to the refrigeration air-conditioning system of the embodiment of the application, when the heat exchanger 100 is used as an evaporator to work under an evaporation working condition, the heat exchanger 100 can slow down the frosting condition at an inlet, and the heat exchange efficiency of the heat exchanger 100 is improved. As shown in fig. 13, when the refrigeration air-conditioning system is in the cooling mode, the heat exchanger 100 is an indoor heat exchanger 600, and the heat exchanger 100 operates as an evaporator in the evaporation condition.

According to the refrigeration air-conditioning system of the embodiment of the application, when the heat exchanger 100 is used as a condenser to work under a condensation working condition, the heat exchanger 100 increases the flow of the refrigerant in the heat exchange tube 40, and the heat exchange capacity of the heat exchanger 100 can be improved. As shown in fig. 13, when the refrigeration air-conditioning system is in the heating mode, the heat exchanger 100 is an indoor heat exchanger 600, and the heat exchanger 100 operates as a condenser in the condensing condition.

The refrigeration and air-conditioning system according to the embodiment of the present application may be a heat pump refrigeration and air-conditioning system 200, as shown in fig. 13, the heat exchanger 100 is used as an outdoor heat exchanger 500, and the heat exchanger 100 is used as a condenser and an evaporator when the heat pump refrigeration and air-conditioning system is used in a cooling mode and a heating mode. That is, in the heat pump refrigerating and air-conditioning system, the heat exchanger 100 is always used as the outdoor heat exchanger 500. When the heat pump refrigeration air-conditioning system is in a refrigeration mode, the heat exchanger 100 is used as a condenser. When the heat pump refrigeration air-conditioning system is in a heating mode, the heat exchanger 100 is used as an evaporator.

The refrigeration air-conditioning system according to the embodiment of the present application may also include a plurality of the heat exchangers 100, and the plurality of the heat exchangers 100 are respectively used as an evaporator and a condenser in the refrigeration air-conditioning system. That is, as shown in fig. 13, the outdoor heat exchanger 500 and the indoor heat exchanger 600 of the refrigeration and air-conditioning system according to the embodiment of the present application are both the heat exchanger 100, and one of the outdoor heat exchanger 500 and the indoor heat exchanger 600 functions as an evaporator and the other functions as a condenser. In other words, when the heat pump refrigerating and air-conditioning system is in the cooling mode, the outdoor heat exchanger 500 functions as a condenser, and the indoor heat exchanger 600 functions as an evaporator. When the refrigeration air-conditioning system of the embodiment of the application is in the heating mode, the outdoor heat exchanger 500 is used as an evaporator, and the indoor heat exchanger 600 is used as a condenser.

Some specific exemplary heat exchangers 100 according to the present application are described below with reference to FIGS. 1-12.

Example 1

As shown in fig. 1 to 5, the heat exchanger 100 includes a first header 10, a second header 20, a first block 30, a spacer 44, a plurality of first heat exchange tubes 41, a plurality of second heat exchange tubes 42, a plurality of first fins 51, and a plurality of second fins 52.

The first header 10 includes a peripheral wall and a main passage surrounded by the peripheral wall, and the heat exchanger 100 further includes a first inlet/outlet pipe 11 and a fourth member, the first inlet/outlet pipe 11 is communicated with the first header 10. At least a portion of the fourth piece is located within the first header 10, and the fourth piece extends a predetermined distance in the left-right direction. The main channel comprises a first flow channel and a second flow channel, the fourth element is positioned between the first flow channel and the second flow channel, the first flow channel is communicated with the first inlet and outlet pipe 11, and the second flow channel is communicated with the first heat exchange pipe 41. The fourth piece is equipped with a plurality of through-holes, and the through-hole intercommunication first runner and second runner.

The first assembly 30 includes a first member 31 and end caps provided at left and right ends of the first intermediate header 31.

The outer peripheral profiles of the cross sections of the first heat exchange tube 41 and the second heat exchange tube 42 are generally flat. The plurality of first heat exchange tubes 41 are arranged at intervals in the left-right direction. The first heat exchange tube 41 comprises a first curved section 412 and a first straight section 411, wherein the lower end of the first curved section 412 is connected to the first collecting pipe 10, the upper end of the first curved section 412 is connected to the lower end of the first straight section 411, and the upper end of the first straight section 411 is connected to the first member 31 so as to communicate the first collecting pipe 10 and the first member 31. The first curved section 412 is curved forward relative to the first straight section 411, and a part of the first curved section 412 is a straight section, the length direction of the straight section is at an angle with the length direction of the first straight section 411, and the angle is less than 90 °.

The plurality of second heat exchange pipes 42 are arranged at intervals in the left-right direction. The upper end of the second heat exchange tube 42 is connected to the first member 31, and the lower end of the second heat exchange tube 42 is connected to the second header 20 to communicate the first member 31 and the second header 20.

The width of the second heat exchange tube 42 is smaller than that of the first heat exchange tube 41, the first collecting pipe 10 and the second collecting pipe 20 are both circular tubes, and the inner diameter of the second collecting pipe 20 is smaller than that of the first collecting pipe 10.

The plurality of first heat exchange tubes 41 and the plurality of second heat exchange tubes 42 constitute a plurality of heat exchange tube 40 groups, the heat exchange tube 40 group includes one first heat exchange tube 41 and one second heat exchange tube 42, and in the heat exchange tube 40 group, the first heat exchange tube 41 is on the left side, and the second heat exchange tube 42 is on the right side, the plurality of heat exchange tube 40 groups are arranged at intervals in the left-right direction, and the first fin 51 is connected between the adjacent first straight section 411 and the second heat exchange tube 42.

First fins 51 are also provided between two adjacent first straight sections 411 and between two adjacent second heat exchange tubes 42. One end of a part of the first fins 51 is connected to one of two adjacent first flat sections 411, and the other end of the first fin 51 is connected to the other of the two adjacent first flat sections 411; one end of a part of the first fin 51 is connected to one of the two adjacent second heat exchange tubes 42, and the other end of the first fin 51 is connected to the other of the two adjacent second heat exchange tubes 42.

The upper ends of the plurality of first straight sections 411 are connected to the first member 31, and the upper ends of the plurality of second heat exchange tubes 42 are connected to the first member 31. When the heat exchanger 100 is used as an evaporator under an evaporation condition, the refrigerant may enter the first heat exchange tube 41 from the first inlet/outlet tube 11, the refrigerant in the first heat exchange tube 41 may enter the second heat exchange tube 42 after converging at the first intermediate collecting pipe 31, and the refrigerant in the second heat exchange tube 42 may flow out from the second inlet/outlet tube 21. When the heat exchanger 100 is a condenser, the refrigerant enters the second heat exchange tube 42 from the second inlet/outlet tube 21, the refrigerant in the second heat exchange tube 42 enters the first heat exchange tube 41 after converging at the first intermediate collecting pipe 31, and the refrigerant in the first heat exchange tube 41 flows out from the first inlet/outlet tube 11.

The first header 10 is located above the second header 20. And the length of the first heat exchange tube 41 is less than that of the second heat exchange tube 42, and the bottom of the second heat exchange tube 42 is not adjacent to the first heat exchange tube 41.

The spacer 44 and the second heat exchange tube 42 are generally parallel, and the outer peripheral profile of the spacer 44 is also generally flat. The spacer 44 is located between the first straight section 411 and the second header 20. The spacer 44 fills the space between the first straight section 411 and the second header 20.

The left end of part of the second fin 52 is connected with the second heat exchange tube 42, the right end of the second fin 52 is connected with the spacer 44, and the second heat exchange tube 42 is arranged adjacent to the spacer 44; the left end of another part of the second fins 52 is connected to one of the two adjacent spacers 44, and the right end of the second fin 52 is connected to the other of the two adjacent spacers 44.

Example 2

As shown in fig. 6, unlike example 1, the first member 30 includes a plurality of second pieces 32, and the second pieces 32 have a generally flat-shaped cross-sectional profile. The second member 32 is a separate intermediate heat exchange tube 40, the middle of the second member 32 is bent, one end of the second member 32 is downwardly inserted into the upper end of the first flat section 411, and the other end of the second member 32 is downwardly inserted into the upper end of the second heat exchange tube 42.

Example 3

As shown in fig. 7 to 10, the heat exchanger 100 includes a first header 10, a second header 20, a first block 30, a second block 60, a spacer 44, a plurality of first heat exchange tubes 41, a plurality of second heat exchange tubes 42, a plurality of third heat exchange tubes 43, a plurality of first fins 51, and a plurality of second fins 52.

The first member 30 includes a first member 31 and end caps provided at left and right ends of the first member 31.

The first, second and third

heat exchange tubes

41, 42 and 43 have a generally flat outer peripheral profile in cross section. The plurality of first heat exchange tubes 41 are arranged at intervals in the left-right direction. The first heat exchange tube 41 includes a first curved section 412, a second curved section 413, and a first straight section 411. The lower end of the first curved section 412 is connected to the first header 10, the upper end of the first curved section 412 is connected to the lower end of the first straight section 411, the upper end of the first straight section 411 is connected to the lower end of the second curved section 413, and the upper end of the second curved section 413 is connected to the first member 31 to communicate the first header 10 and the first member 31.

The first curved section 412 is curved forward relative to the first straight section 411, and a part of the first curved section 412 is a straight section, the length direction of the straight section is at an angle with the length direction of the first straight section 411, and the angle is less than 90 °. The second curved section 413 is curved forward relative to the first straight section 411, and a part of the pipe section of the second curved section 413 is also a straight section, the length direction of the straight section is at an angle with the length direction of the first straight section 411, and the angle is less than 90 °.

The plurality of second heat exchange pipes 42 are arranged at intervals in the left-right direction. The lower end of the second heat exchange tube 42 is connected to the second assembly 60, and the upper end of the second heat exchange tube 42 is connected to the second header 20 to communicate the second assembly 60 and the second header 20.

A plurality of third heat exchange tubes 43 are arranged at intervals in the left-right direction. The third heat exchange tube 43 includes a third curved section 432 and a second straight section 431. The upper end of the third curved section 432 is connected to the first member 31, the lower end of the third curved section 432 is connected to the upper end of the second straight section 431, and the lower end of the second straight section 431 is connected to the second member 60 to communicate the first member 31 and the second member 60. The third curved section 432 is curved forward relative to the second straight section 431, and a part of the third curved section 432 is a straight section, a length direction of the straight section is at an angle smaller than 90 ° with a length direction of the second straight section 431.

The plurality of second heat exchange tubes 42 are divided into a plurality of second heat exchange tube groups each including at least two second heat exchange tubes 42, the second heat exchange tube groups, the first heat exchange tubes 41 and the third heat exchange tubes 43 being sequentially arranged in the length direction of the first member 31.

First fins 51 are disposed between the adjacent first and second

heat exchange tubes

411 and 42, between the first and second

straight sections

411 and 431 of the adjacent first and third

heat exchange tubes

41 and 43, between the adjacent second and second

heat exchange tubes

431 and 42, between the adjacent two first straight sections 411, between the adjacent two second heat exchange tubes 42, and between the adjacent two second straight sections 431.

The second module 60 includes a third member 61, and the lower ends of the plurality of second heat exchange tubes 42 and the lower ends of the plurality of second straight sections 431 are connected to the third member 61.

The second collecting pipe 20 is located above the first piece 31, the length of the first heat exchange pipe 41 is smaller than that of the second heat exchange pipe 42, and the top of the second heat exchange pipe 42 is not adjacent to the first heat exchange pipe 41.

The spacer 44 is generally parallel to the second heat exchange tube 42 and the outer peripheral profile of the spacer 44 is also generally flat. A part of the spacer 44 is located between the first straight section 411 and the second header 20 in the left-right direction, and another part of the spacer 44 is located between the second straight section 431 and the second header 20 in the left-right direction.

The left end of part of the second fin 52 is connected with the second heat exchange tube 42, the right end of the second fin 52 is connected with the spacer 44, and the second heat exchange tube 42 is arranged adjacent to the spacer 44; one end of a part of the second fin 52 is connected to one of the two adjacent spacers 44, and the other end of the second fin 52 is connected to the other of the two adjacent spacers 44.

In the case of example 4, the process,

as shown in fig. 11 and 12, unlike example 1, the first member 30 includes a plurality of second pieces 32, and the second pieces 32 have a generally flat-shaped cross-sectional profile. The second member 32 is a separate intermediate heat exchange tube 40, the middle of the second member 32 is bent, one end of the second member 32 is downwardly inserted into the upper end of the first flat section 411, and the other end of the second member 32 is downwardly inserted into the upper end of the second heat exchange tube 42.

The first heat exchange tube 41 includes a first curved section 412 and a first straight section 411, the lower end of the first curved section 412 is connected to the first header 10, the upper end of the first curved section 412 is connected to the lower end of the first straight section 411, and the upper end of the first straight section 411 is connected to the first member 31 to communicate the first header 10 and the first member 31. The first curved section 412 is curved forward relative to the first straight section 411, and a part of the first curved section 412 is a straight section, the length direction of the straight section is at an angle with the length direction of the first straight section 411, and the angle is less than 90 °.

The third heat exchanging pipe 43 is a straight pipe, the upper end of the third heat exchanging pipe 43 is connected to the first member 31, and the lower end of the third heat exchanging pipe 43 is connected to the third member 61 to communicate the first member 31 and the third member 61.

Example 5

The refrigeration and air-conditioning system may be a heat pump refrigeration and air-conditioning system 200, and the heat pump refrigeration and air-conditioning system 200 includes a compressor 300, a throttle 400, an outdoor heat exchanger 400, and an indoor heat exchanger 600.

The outdoor heat exchanger 500 and the indoor heat exchanger 600 are both the heat exchanger 100 in any of the above examples.

When the heat pump refrigeration air-conditioning system is in a refrigeration mode, the outdoor heat exchanger 500 is used as a condenser, and the indoor heat exchanger 600 is used as an evaporator. When the heat pump refrigeration air-conditioning system is in a heating mode, the outdoor heat exchanger 500 is used as an evaporator, and the indoor heat exchanger 600 is used as a condenser.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. A heat exchanger, comprising:

a first collecting pipe and a second collecting pipe;

a first component;

the second heat exchange tubes are arranged at intervals along the length direction of the second collecting pipe, one end of each second heat exchange tube is connected with the first assembly, the other end of each second heat exchange tube is connected with the second collecting pipe so as to communicate the first assembly with the second collecting pipe,

the first heat exchange tube and the second heat exchange tube are arranged at intervals in the length direction of the first assembly; and

2. The heat exchanger of claim 1, wherein the first assembly comprises a first member, the other ends of the plurality of first flat sections are each connected to the first member, and the one ends of the plurality of second heat exchange tubes are each connected to the first member.

3. The heat exchanger of claim 1, wherein the first heat exchange tube and the second heat exchange tube are arranged at intervals in a length direction of the first module,

the first assembly comprises a plurality of second pieces, each second piece is connected with the other end of the first straight section, the second piece is connected with one end of the second heat exchange tube, each second piece corresponds to one first heat exchange tube and one second heat exchange tube, and the second pieces are arranged in parallel along the length direction of the first assembly.

4. The heat exchanger as recited in claim 2 wherein the plurality of second heat exchange tubes are divided into a plurality of second heat exchange tube groups, each second heat exchange tube group including at least two second heat exchange tubes, the second heat exchange tube groups and the first heat exchange tubes being arranged at intervals in a length direction of the first module.

5. The heat exchanger as recited in any one of claims 1 to 4 further comprising a spacer having a length direction substantially parallel to a length direction of the second heat exchange tube, wherein at least a portion of the first bent section of the first heat exchange tube is juxtaposed with the spacer in a width direction of the first straight section, and wherein at least 2 of the spacers are disposed adjacent to the second heat exchange tube in a length direction of the first module.

6. The heat exchanger of claim 5, wherein the fins further comprise second fins provided at least between the second heat exchange tubes adjacent in the lengthwise direction of the first block and the spacers, and/or between the second fins provided at least between the spacers adjacent in the lengthwise direction of the first block.

7. The heat exchanger according to any one of claims 1 to 4, wherein the width of the second heat exchange tubes is greater than that of the first heat exchange tubes, the first header and the second header are both round tubes, the inner diameter of the second header is greater than that of the first header, and/or the number of the second heat exchange tubes is greater than that of the first heat exchange tubes.

8. A heat exchanger, comprising:

a first collecting pipe and a second collecting pipe;

the heat exchange tubes are mainly flat in peripheral outline of the cross section and comprise a plurality of first heat exchange tubes, a plurality of second heat exchange tubes and a plurality of third heat exchange tubes, the first heat exchange tubes are arranged at intervals along the length direction of the first collecting pipe, each first heat exchange tube comprises a first bending section, a second bending section and a first straight section, one end of the first bending section is connected with the first collecting pipe, the other end of the first bending section is connected with one end of the first straight section, the other end of the first straight section is connected with one end of the second bending section, the other end of the second bending section is connected with the first collecting pipe to communicate the first collecting pipe and the first piece, the length direction of part of the tube section of the first bending section forms an angle with the length direction of the first straight section, and the length direction of part of the second bending section forms an angle with the length direction of the first straight section,

the second heat exchange tubes are arranged at intervals along the length direction of the second collecting pipe, one end of each second heat exchange tube is connected with the second assembly, the other end of each second heat exchange tube is connected with the second collecting pipe so as to communicate the second assembly with the second collecting pipe,

a plurality of third heat exchange tubes are arranged at intervals along the length direction of the first piece, each third heat exchange tube comprises a third bent section and a second straight section, one end of the third bent section is connected with the first piece, the other end of the third bent section is connected with one end of the second straight section, the other end of the second straight section is connected with the second component so as to communicate the first piece and the second component, the length direction of part of the tube section of the third bent section forms an angle with the length direction of the second straight section,

the first heat exchange tube, the second heat exchange tube and the third heat exchange tube are arranged at intervals in the length direction of the first piece; and

the heat exchanger comprises a first component and a second component, wherein the fins comprise first fins, one end of each first fin is connected with a first straight section of one first heat exchange tube in the length direction of the first component, the other end of each first fin is connected with one second heat exchange tube, the first straight sections, the first fins and the second heat exchange tubes are sequentially arranged in the length direction of the first component, and the number of the first fins is two or more.

9. The heat exchanger of claim 8, wherein the second module comprises a third member, the third member is one, one end of each of the plurality of second heat exchange tubes is connected to the third member, and the other end of each of the plurality of second straight sections is connected to the third member.

10. The heat exchanger as recited in claim 8 wherein the plurality of second heat exchange tubes are divided into a plurality of second heat exchange tube groups, each second heat exchange tube group comprising at least two second heat exchange tubes, the second heat exchange tube group, the first heat exchange tube and the third heat exchange tube being arranged in order in a length direction of the first member.

11. A heat exchanger, comprising:

a first collecting pipe and a second collecting pipe;

a first component and a second component;

the heat exchange tubes are mainly flat in peripheral outline of the cross section and comprise a plurality of first heat exchange tubes, a plurality of second heat exchange tubes and a plurality of third heat exchange tubes, the first heat exchange tubes are arranged at intervals along the length direction of the first collecting pipe, each first heat exchange tube comprises a first bending section and a first straight section, one end of the first bending section is connected with the first collecting pipe, the other end of the first bending section is connected with one end of the first straight section, the other end of the first straight section is connected with the first assembly to communicate the first collecting pipe with the first assembly, and the length direction of part of tube sections of the first bending section forms an angle with the length direction of the first straight section,

a plurality of third heat exchange tubes are arranged at intervals along the length direction of the first assembly or the second assembly, one end of each third heat exchange tube is connected with the first assembly, the other end of each third heat exchange tube is connected with the second assembly so as to communicate the first assembly and the second assembly,

the first heat exchange tube, the second heat exchange tube and the third heat exchange tube are arranged at intervals in the length direction of the first assembly or the second assembly; and

the fin comprises a first fin, one end of the first fin is connected with a first straight section of the first heat exchange tube in the length direction of the first assembly, the other end of the first fin is connected with the second heat exchange tube, the first straight section, the first fin and the second heat exchange tube are sequentially arranged in the length direction of the first assembly, and the first fins are multiple.

12. The heat exchanger of claim 11, wherein the first heat exchange tube and the third heat exchange tube are arranged at intervals in a length direction of the first module,

the first assembly comprises a plurality of second pieces, each second piece is connected with the other end of the first straight section, the second piece is connected with one end of the third heat exchange tube, each second piece corresponds to one first heat exchange tube and one third heat exchange tube, and the second pieces are arranged in parallel along the length direction of the first assembly.

13. A refrigeration air conditioning system, comprising:

a compressor, a throttle, a plurality of heat exchangers,

at least one of the heat exchangers is a heat exchanger as claimed in claim 1, claim 8 or claim 11 above.