WO2022007956A1

WO2022007956A1 - Heat exchange assembly and heat exchange system having same

Info

Publication number: WO2022007956A1
Application number: PCT/CN2021/105534
Authority: WO
Inventors: 吴苗苗; 汪峰
Original assignee: 杭州三花微通道换热器有限公司
Priority date: 2020-07-10
Filing date: 2021-07-09
Publication date: 2022-01-13
Also published as: JP2023533562A; CN113915801A; CN113915801B

Abstract

A heat exchange assembly and a heat exchange system having the heat exchange assembly. The heat exchange assembly comprises a plurality of heat exchange tubes (20), and a first tube (11) and a second tube (12) that are arranged side by side; each heat exchange tube (20) comprises a plurality of first heat exchange tubes (21) and at least one second heat exchange tube (22); one end of each first heat exchange tube (21) is in communication with the first tube (11), and the other end of each first heat exchange tube (21) is in communication with the second tube (12); each second heat exchange tube (22) comprises a third tube segment (221), and the third tube segment (221) comprises a first sub-tube segment (2211), a second sub-tube segment (2212), a third sub-tube segment (2213) and at least two third bending segments (2214); and the first sub-tube segment (2211) is in communication with the second tube (12) and one third bending segment (2214), the other end of the third bending segment (2214) is in communication with the other third bending segment (2214) by means of the second sub-tube segment (2212), and the other end of the other third bending segment (2214) is in communication with the first tube (11) by means of the third sub-tube segment (2213). The heat exchange assembly can adjust the flow resistance of a refrigerant in a heat exchange tube, and facilitates an improvement in the heat exchange effect.

Description

Heat exchange assembly and heat exchange system having the same

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority and rights of the Chinese patent application with the application number of 202010665060.0 and the filing date of July 10, 2020. The entire contents of the above Chinese patent application are hereby incorporated by reference into this application.

technical field

Embodiments of the present application relate to the technical field of heat exchange, and more particularly, to a heat exchange assembly and a heat exchange system having the heat exchange assembly.

Background technique

In the prior art, multi-channel heat exchangers are widely used in the field of air-conditioning, but due to the limited installation space of air-conditioning fans and heat exchangers, and affected by the structure of the unit, the distribution of air flow through the surface of the heat exchanger is uneven, and the Areas of low air volume appear on the heater. The area where the air volume is small is generally at the end of the heat exchanger in the length or width direction. Since the heat transfer rate of the refrigerant is slow in the areas where the air volume is small, the refrigerant will flow more to these areas, reducing the heat transfer effect.

SUMMARY OF THE INVENTION

To this end, an embodiment of an aspect of the present application provides a heat exchange assembly, which can adjust the refrigerant flow resistance inside the heat exchange assembly, which is beneficial to improve the heat exchange effect.

An embodiment of another aspect of the present application provides a heat exchange system having the heat exchange assembly.

A heat exchange assembly according to an embodiment of the first aspect of the present application includes a first tube having a first end in its length direction and a second tube having a first end in its length direction Two ends, the first end of the first tube and the second end of the second tube are located on the same side in the length direction of the first tube; a plurality of heat exchange tubes, the heat exchange tubes communicate with the first tube A tube and the second tube, the heat exchange tube includes a plurality of first heat exchange tubes, the first heat exchange tubes communicate with the first tube and the second tube, and the heat exchange tube includes at least A second heat exchange tube, the second heat exchange tube includes a third tube section, the third tube section includes a first sub-tube section, a second sub-tube section, a third sub-tube section and at least two third curved sections, the One end of the first sub-pipe section is communicated with the second pipe, the other end of the first sub-pipe section is communicated with one of the third curved sections, and the other end of the third curved section is communicated with one end of the second sub-pipe section The other end of the second sub-pipe section is communicated with another third curved section, and the other end of the other third curved section is communicated with one end of the third sub-pipe section. The other end is communicated with the first pipe, the first sub-pipe section, the second sub-pipe section and the third sub-pipe section are arranged along the length direction of the first pipe, and the first sub-pipe section of the second heat exchange pipe is Compared with the first heat exchange tube, the three tube sections are disposed adjacent to the first end of the first tube, and the third sub-tube section is disposed adjacent to the first end of the first tube compared to the first sub-tube section .

According to the heat exchange assembly of the embodiment of the present application, by arranging a plurality of first heat exchange tubes and at least one second heat exchange tube in the heat exchange assembly, the second heat exchange tube includes a third tube section, and the third tube section includes a first heat exchange tube. a sub-pipe section, a second sub-pipe section, a third sub-pipe section and at least two third curved sections, the third pipe section is formed by connecting the first sub-pipe section, the second sub-pipe section and the third sub-pipe section through the at least two third curved sections The S-shaped pipeline can effectively increase the refrigerant flow resistance in the second heat exchange tube, promote the even distribution of the refrigerant in the heat exchange component, and further improve the heat exchange effect of the heat exchange component.

In some embodiments, the first heat exchange tube includes a first tube section, a second tube section and a first curved section, one end of the first tube section communicates with the first tube, and the other end of the first tube section It communicates with one end of the first curved section, one end of the second pipe section communicates with the second pipe, the other end of the second pipe section communicates with the other end of the first curved section, and the second pipe section communicates with the other end of the first curved section. The heat exchange tube further includes a fourth tube section and a second curved section, one end of the fourth tube section is communicated with the second tube, and the other end of the fourth tube section is communicated with one end of the second curved section, so One end of the first sub-pipe section communicates with the other end of the second curved section, the third pipe section and the first pipe section are arranged along the length direction of the first pipe, and the fourth pipe section and the second pipe section are arranged along the first pipe section. Two tubes are arranged in the length direction, the third tube section of the second heat exchange tube is arranged adjacent to the first end of the first tube compared to the first tube section, and the fourth tube section of the second heat exchange tube is relatively close to the first end of the first tube. The second tube section of the first heat exchange tube is disposed adjacent to the second end of the second tube, and the third sub-tube section is adjacent to the first end of the first tube compared to the first sub-tube section set up.

In some embodiments, the first tube has a third end along its length, the second tube has a fourth end along its length, and the third end of the first tube is connected to the second end. The fourth end of the tube is located on the same side in the length direction of the first tube, the distance between the first end of the first tube and the third end of the first tube is L1, and the second end of the second tube is L1. The distance from the end to the fourth end of the second tube is L2, and the L1 is greater than the L2.

In some embodiments, there are multiple second heat exchange tubes, and a third tube section of the second heat exchange tube is adjacent to the first tube section of the first heat exchange tube compared to the first tube section of the first heat exchange tube. The third end is disposed, and the fourth tube section of the second heat exchange tube is disposed adjacent to the fourth end of the second tube compared to the second tube section of the first heat exchange tube, and the third subsection of the second heat exchange tube The tube section is disposed adjacent to the third end of the first tube compared to the first sub-tube section of the second heat exchange tube.

In some embodiments, the first heat exchange tube includes a plurality of first flow channels arranged at intervals, the first flow channels communicate with the first tube and the second tube, and the second heat exchange tube includes spacers A plurality of second circulation channels are arranged, the second circulation channels communicate with the first tube and the second tube, and the sum of the cross-sectional areas of the plurality of first circulation channels on the cross section of the first heat exchange tube is S1, the sum of the cross-sectional areas of the plurality of second flow channels on the cross-section of the second heat exchange tube is S2, and the S1 and S2 satisfy that S2 is greater than or equal to S1.

In some embodiments, there are multiple second heat exchange tubes, one of the second heat exchange tubes is adjacent to one of the first heat exchange tubes on one side of the first tube in the length direction, and the second heat exchange tube is adjacent to the first heat exchange tube. The other side of the second heat exchange tube in the length direction of the first tube is adjacent to the other first heat exchange tube.

In some embodiments, the outer peripheral contour of the cross section of the first heat exchange tube is generally a flat quadrilateral, the outer peripheral contour of the cross section of the one second heat exchange tube is generally a flat quadrilateral, and the second heat exchange tube has a generally flat quadrilateral contour. The width of the tubes is smaller than the width of the first heat exchange tubes.

In some embodiments, first fins are provided between the first pipe segments adjacent in the longitudinal direction of the first pipe, and between the third pipe segments adjacent in the longitudinal direction of the first pipe There are second fins in between, and the size of the first fin in the width direction of the first tube section is larger than the size of the second fin in the width direction of the third tube section.

In some embodiments, the heat exchange tube further includes at least one third heat exchange tube, the third heat exchange tube includes a fifth tube section, a sixth tube section, a fourth curved section, and at least two fifth curved sections, One end of the sixth pipe section is communicated with the first pipe, the other end of the sixth pipe section is communicated with one end of the fourth curved section, and the fifth pipe section includes a fourth sub-pipe section, a fifth sub-pipe section and A sixth sub-pipe section, one end of the fourth sub-pipe section is communicated with the other end of the fourth curved section, the other end of the fourth sub-pipe section is communicated with one of the fifth curved sections, and the fifth curved section has The other end is communicated with one end of the fifth sub-pipe section, the other end of the fifth sub-pipe section is communicated with the other fifth curved section, and the other end of the other fifth curved section is communicated with the sixth sub-pipe section The other end of the sixth sub-pipe section is communicated with the second pipe, and the fourth sub-pipe section, the fifth sub-pipe section and the sixth sub-pipe section are in the length direction of the second pipe Arranged side by side, the sixth tube section of the third heat exchange tube is arranged adjacent to the first end of the first tube compared with the third sub-tube section, and the sixth sub-tube section is compared with the fourth sub-tube section. A pipe segment is disposed adjacent the second end of the second pipe.

The heat exchange system according to the embodiment of the second aspect of the present application includes the heat exchange assembly described in the embodiment of the present application, wherein the first tube and the second tube of the heat exchange assembly both include bent portions, and the first The pipe section is a straight section, the first pipe is bent in a direction parallel to the length direction of the first pipe section to form a bent portion of the first pipe, and the second pipe is wound parallel to the first pipe section. A pipe segment is bent in the direction of the length direction to form the bending portion of the second pipe, and the bending radius of the bending portion of the first pipe is larger than the bending radius of the bending portion of the second pipe.

In some embodiments, a connection between a second heat exchange tube and the first tube is located at a bent portion of the first tube or adjacent to a bent portion of the first tube, the second heat exchange tube The connection with the second tube is located at or adjacent to the bent portion of the second tube.

Description of drawings

FIG. 1 is a schematic diagram of a heat exchange assembly according to an embodiment of the present application when it is not bent.

FIG. 2 is a schematic diagram of a heat exchange assembly according to another embodiment of the present application when it is not bent.

FIG. 3 is a schematic structural diagram of a heat exchange assembly according to an embodiment of the present application.

4 is a schematic structural diagram of a first heat exchange tube in a heat exchange assembly according to an embodiment of the present application.

FIG. 5 is a schematic structural diagram of a second heat exchange tube in a heat exchange assembly according to an embodiment of the present application.

FIG. 6 is a schematic structural diagram of a heat exchange assembly according to another embodiment of the present application.

FIG. 7 is a partial perspective view of the heat exchange assembly in FIG. 6 .

FIG. 8 is an enlarged schematic view of part A in FIG. 7 .

FIG. 9 is a schematic structural diagram of a heat exchange assembly according to still another embodiment of the present application.

FIG. 10 is an enlarged schematic view of part B in FIG. 9 .

FIG. 11 is a schematic structural diagram of the second heat exchange tube in FIG. 9 .

12 is a schematic diagram of a heat exchange system according to an embodiment of the present application.

Reference number:

First tube 11, second tube 12, heat exchange tube 20, first heat exchange tube 21, first tube section 211, second tube section 212, first curved section 213, first straight portion 213', second heat exchange Tube 22, third tube section 221, first sub-tube section 2211, second sub-tube section 2212, third sub-tube section 2213, third curved section 2214, fourth tube section 222, second curved section 223, second straight section 223' , the first circulation channel 23 , the second circulation channel 24 , the fins 30 , the first fins 31 , and the second fins 32 .

detailed description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present application, but should not be construed as a limitation to the present application. In the description of this application, it should 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, The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying the indicated devices or elements. The clamp must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present application.

As shown in FIGS. 1-11 , the heat exchange assembly according to the embodiment of the present application includes a first tube 11 , a second tube 12 and a plurality of heat exchange tubes 20 .

The first tube 11 and the second tube 12 are arranged side by side, the first tube 11 has a first end (the right end of the first tube 11 in FIG. 9 ) in its length direction (the left and right direction as shown in FIG. The second pipe 12 has a second end (the right end of the second pipe 12 in FIG. 9 ) in its length direction (the left and right direction as shown in FIG. The second end is located on the same side in the length direction of the first tube 11 .

The heat exchange tube 20 communicates with the first tube 11 and the second tube 12 . The heat exchange tube 20 includes a plurality of first heat exchange tubes 21 . One end of the first heat exchange tube 21 (the lower end of the first heat exchange tube 21 in FIG. 9 ) is communicated with the first tube 11 . The other end (the upper end of the first heat exchange tube 21 in FIG. 9 ) communicates with the second tube 12 .

The heat exchange tube 20 includes at least one second heat exchange tube 22, the second heat exchange tube 22 includes a third tube section 221 (refer to the heat exchange assembly shown in FIG. 9 ), and the third tube section 221 includes a first sub-tube section 2211 (see FIG. 9 ). 9), the second sub-pipe section 2212 (the middle vertical section of the third pipe section 221 in FIG. 9), the third sub-pipe section 2213 (as shown in the third pipe section 221 in FIG. 9 ) right vertical section) and at least two third curved sections 2214 (arc connecting sections of the third pipe section 221 in FIG. 9 ).

One end of the first sub-pipe section 2211 (the upper end of the first sub-pipe section 2211 in FIG. 9 ) communicates with the second pipe 12 , and the other end of the first sub-pipe section 2211 (the lower end of the first sub-pipe section 2211 in FIG. 9 ) communicates with a The third curved section 2214 communicates with the other end of the third curved section 2214 (the right end of the third curved section 2214 in FIG. 9 ) and one end of the second sub-pipe section 2212 (as shown in FIG. 9 , the lower end of the second sub-pipe section 2212 ) ) is connected, and the other end of the second sub-pipe section 2212 (as shown in FIG. 9 , the upper end of the second sub-pipe section 2212 ) is communicated with another third curved section 2214 , and the other end of the other third curved section 2214 (as shown in FIG. 9 ) The right end of the other third curved section 2214 is communicated with one end of the third sub-pipe section 2213 (the upper end of the third sub-pipe section 2213 in FIG. 9 ), and the other end of the third sub-pipe section 2213 (the third sub-pipe section in FIG. 9 ) The lower end of 2213 is connected to the first pipe 11 , and the first sub-pipe section 2211 , the second sub-pipe section 2212 and the third sub-pipe section 2213 are arranged along the length direction of the first pipe 11 . As shown in FIGS. 9-11 , preferably, the second heat exchange tube 22 is an S-shaped tube, the upper end of the second heat exchange tube 22 is connected to the second tube 12 , and the lower end of the second heat exchange tube 22 is connected to the first tube 11 connected, the second heat exchange tube 22 includes a plurality of second sub-tube sections 2212 , in other words, the second heat exchange tube 22 can be bent multiple times between the first tube 11 and the second tube 12 .

The third tube section 221 of the second heat exchange tube 22 is disposed adjacent to the first end of the first tube 11 compared to the first heat exchange tube 21 , and the third sub tube section 2213 is adjacent to the first end of the first tube 11 compared to the first sub tube section 2211 First-end settings.

According to the heat exchange assembly of the embodiment of the present application, by arranging a plurality of first heat exchange tubes 21 and at least one second heat exchange tube 22 in the heat exchange assembly, the second heat exchange tube 22 includes a third pipe section 221, The three pipe sections 221 include a first sub-pipe section 2211 , a second sub-pipe section 2212 , a third sub-pipe section 2213 and at least two third curved sections 2214 , and the third pipe section 221 communicates with the first sub-pipe section through at least two third curved sections 2214 2211, the second sub-pipe section 2212 and the third sub-pipe section 2213 form an S-shaped pipeline, which can effectively increase the refrigerant flow resistance in the second heat exchange tube 22, promote the even distribution of the refrigerant in the heat exchange assembly, and further improve the heat exchange assembly. heat transfer effect.

In some embodiments, the first heat exchange tube 21 includes a first tube section 211, a second tube section 212 (refer to the heat exchange assembly shown in FIG. 1 and FIG. 2 when the heat exchange assembly is not bent) and a first curved section 213. The first tube section One end of 211 (the lower end of the first pipe section 211 in FIG. 3 ) is communicated with the first pipe 11 , and the other end of the first pipe section 211 (the upper end of the first pipe section 211 in FIG. 3 ) is connected with one end of the first curved section 213 ( As shown in FIG. 3 , the front end of the first curved section 213 is connected, one end of the second pipe section 212 (the lower end of the second pipe section 212 in FIG. 3 ) is communicated with the second pipe 12 , and the other end of the second pipe section 212 (as shown in FIG. 3 ) is communicated with the second pipe 12 . The upper end of the second pipe section 212 ) communicates with the other end of the first curved section 213 (the rear end of the first curved section 213 in FIG. 3 ).

Specifically, as shown in FIG. 1 , when the heat exchange assembly is not bent, the first heat exchange tube 21 includes a first tube section 211 , a second tube section 212 and a first tube section connected between the first tube section 211 and the second tube section 212 For the straight portion 213', when the heat exchange assembly is bent, the first straight portion 213' is bent to form the first curved section 213 of the heat exchange assembly.

The second heat exchange tube 22 further includes a fourth tube section 222 (refer to when the heat exchange assembly shown in FIG. 1 and FIG. 2 is not bent) and a second curved section 223. One end of the fourth tube section 222 (the fourth tube section in FIG. 3 The lower end of the pipe section 222) is communicated with the second pipe 12, and the other end of the fourth pipe section 222 (the upper end of the fourth pipe section 222 in FIG. one end of the first sub-pipe section 2211 (the upper end of the first sub-pipe section 2211 in FIG. 3 ) communicates with the other end of the second curved section 223 (the front end of the second curved section 223 in FIG. 3 ), the first The other end of a sub-pipe section 2211 (the lower end of the first sub-pipe section 2211 in FIG. 3 ) communicates with a third curved section 2214 , and the other end of the third curved section 2214 (as shown in FIG. 3 of the third curved section 2214 ) The left end) is communicated with one end of the second sub-pipe section 2212 (the lower end of the second sub-pipe section 2212 in FIG. 3 ), and the other end of the second sub-pipe section 2212 (the upper end of the second sub-pipe section 2212 in FIG. The three curved sections 2214 communicate with each other, and the other end of the other third curved section 2214 (as shown in the left end of the other third curved section 2214 in FIG. 3 ) and one end of the third sub-pipe section 2213 (as shown in the third sub-pipe section in FIG. 3 ) The upper end of the third sub-pipe section 2213 (the lower end of the third sub-pipe section 2213 in FIG. 3 ) is communicated with the first pipe 11 .

Specifically, as shown in FIG. 2 , when the heat exchange assembly is not bent, the second heat exchange tube 22 includes a third tube section 221 , a fourth tube section 222 and a second tube section connected between the third tube section 221 and the fourth tube section 222 For the straight portion 223', when the heat exchange assembly is bent, the second straight portion 223' is bent to form the second curved section 213 of the heat exchange assembly.

The third tube section 221 and the first tube section 211 are arranged along the length direction of the first tube 11 , the fourth tube section 222 and the second tube section 212 are arranged along the length direction of the second tube 12 , and the third tube section 221 of the second heat exchange tube 22 is in phase with each other. Compared with the first tube section 211 being disposed adjacent to the first end of the first tube 11 , the fourth tube section 222 of the second heat exchange tube 22 is adjacent to the second tube section 212 of the second heat exchange tube 12 compared to the second tube section 212 of the first heat exchange tube 21 . The end is disposed, and the third sub-pipe section 2213 is disposed adjacent to the first end of the first pipe 11 compared to the first sub-pipe section 2211 . A second heat exchange tube is arranged on the left or right side of the heat exchange assembly adjacent to the end, so that the two ends of the first tube and the second tube are aligned after bending, which facilitates the installation of the heat exchanger and promotes the uniform distribution of the refrigerant , which improves the heat transfer capacity.

Preferably, by arranging a plurality of first heat exchange tubes 21 and at least one second heat exchange tube 22 in the heat exchange assembly, the second heat exchange tubes 22 include a third tube section 221, a fourth tube section 222 and a second bend Section 223, one end of the fourth pipe section 222 is communicated with the second pipe 12, the other end of the fourth pipe section 222 is communicated with one end of the second curved section 223, and the other end of the second curved section 223 is communicated with one end of the third pipe section 221, The other end of the third pipe section 221 is connected to the first pipe 11 , and the third pipe section 221 includes a first sub-pipe section 2211 , a second sub-pipe section 2212 , a third sub-pipe section 2213 and at least two third curved sections 2214 . The third pipe section 221 At least two third curved sections 2214 are connected to the first sub-pipe section 2211, the second sub-pipe section 2212 and the third sub-pipe section 2213 to form an S-shaped pipeline, which can effectively increase the refrigerant flow resistance in the second heat exchange tube 22 and promote the refrigerant flow. It is evenly distributed in the heat exchange components, thereby improving the heat exchange effect of the heat exchange components.

In some embodiments, the first tube 11 has a third end in its length direction (as shown in the right end of the first tube 11 in FIG. 3 ), and the second tube 12 has a fourth end in its length direction (as shown in FIG. 3 ) The right end of the second pipe 12 ), the third end of the first pipe 11 and the fourth end of the second pipe 12 are located on the same side in the length direction of the first pipe 11 , the first end of the first pipe 11 to the first pipe 11 The distance between the third ends of the second pipe 12 is L1, the distance between the second end of the second pipe 12 and the fourth end of the second pipe 12 is L2, and L1 is greater than L2.

As shown in FIG. 2, when the heat exchange assembly is not bent, the first tube 11 and the second tube 12 are arranged side by side, the distance from the left end to the right end of the first tube 11 is L1, and the distance from the left end to the right end of the second tube 12 is L2, L1 is greater than L2. Thereby, the third pipe section 221 of the second heat exchange pipe 22 is connected to the first pipe 11 in a bendable manner.

In some embodiments, there are multiple second heat exchange tubes 22 , and the third tube section 221 of one second heat exchange tube 22 is adjacent to the third tube section 221 of the first tube 11 compared to the first tube section 211 of the first heat exchange tube 21 . The fourth tube section 222 of the second heat exchange tube 22 is disposed adjacent to the fourth end of the second tube 12 compared to the second tube section 212 of the first heat exchange tube 21 . The three sub-tube sections 2213 are disposed adjacent to the third end of the first tube 11 compared to the first sub-tube section 2211 of the second heat exchange tube 22 .

As shown in FIG. 1 , when the heat exchange assembly is not bent, the first tube 11 and the second tube 12 are arranged side by side, and the length L1 of the first tube 11 is greater than the length L2 of the second tube 12 . The upper end of a second heat exchange tube 22 is connected to the right end of the second tube 12, and the lower end of the second heat exchange tube 22 is connected to the right end of the first tube 11. The tubes 11 are located on the right side of the plurality of first heat exchange tubes 21 in the longitudinal direction. Meanwhile, the third sub-tube section 2213 of the second heat exchange tube 22 is disposed adjacent to the right end of the first tube 11 compared to the first sub-tube section 2211 of the second heat exchange tube 22 . Therefore, the first heat exchange tube on the left or right side of the heat exchange assembly is set as the second heat exchange tube, so that the two ends of the first tube and the second tube are aligned after bending, which facilitates the installation of the heat exchanger It also promotes the uniform distribution of the refrigerant and improves the heat exchange capacity.

In some embodiments, the outer peripheral contour of the cross section of the first heat exchange tube 21 and the outer peripheral contour of the cross section of the second heat exchange tube 22 are both substantially flat quadrilaterals.

As shown in FIG. 3 , the first heat exchange tubes 21 and the second heat exchange tubes 22 are arranged at intervals along the left-right direction, and the first heat exchange tubes 21 and the second heat exchange tubes 22 have lengths, widths and thicknesses. The width is greater than the thickness, and the length of the heat exchange tube is in the up-down direction, the width is in the front-rear direction, and the thickness is in the left-right direction, and the heat exchange tube is called a flat tube in the art.

In some embodiments, as shown in FIG. 4 and FIG. 5 , the first heat exchange tube 21 includes a plurality of first circulation channels 23 arranged at intervals in the width direction thereof, and the first circulation channels 23 communicate with the first tube 11 and the first flow channel 23 . Two tubes 12, the second heat exchange tube 22 includes a plurality of second circulation channels 24 arranged at intervals in the width direction thereof, the second circulation channels 24 communicate with the first tube 11 and the second tube 12, and the plurality of first circulation channels 23 The sum of the cross-sectional areas on the cross-section of the first heat exchange tube 21 is S1, and the sum of the cross-sectional areas of the plurality of second flow channels 24 on the cross-section of the second heat exchange tube 22 is S2. S1 and S2 are satisfied, and S2 is greater than or equal to S1. Therefore, the refrigerant circulation area of the second heat exchange tube 22 in the heat exchange assembly is increased, so that the refrigerant circulation area of the second heat exchange tube 22 is larger than that of the ordinary first heat exchange tube 21, and the second heat exchange tube 21 can be reduced. The flow resistance of the heat exchange tube 22 prevents the heat exchange effect from being affected by the excessive flow resistance of the second heat exchange tube 22 when the heat exchange component is relatively uniform in the wind field. In other embodiments, the refrigerant flow area of the second heat exchange tube used in the heat exchange assembly is larger than the flow area of the first heat exchange tube to prevent the flow resistance from being too large when the wind field difference is small, thereby affecting the heat exchange effect.

In some embodiments, the outer peripheral contour of the cross section of the first heat exchange tube 21 is generally a flat quadrilateral, the outer peripheral contour of the cross section of a second heat exchange tube 22 is generally a flat quadrilateral, the second heat exchange tube 22 is smaller than the width of the first heat exchange tube 21 .

As shown in FIG. 4 and FIG. 5 , the width of the first heat exchange tube 21 is W1, and the width of the second heat exchange tube 22 is W2, and W1 and W2 satisfy: W1 is greater than W2.

In some embodiments, there are multiple second heat exchange tubes 22 , one second heat exchange tube 22 is adjacent to one first heat exchange tube 21 on one side of the first tube 11 in the length direction, and the second heat exchange tube 22 is adjacent to one first heat exchange tube 21 . The other side of the tube 22 in the length direction of the first tube 11 is adjacent to another first heat exchange tube 21 .

As shown in FIG. 6 , a second heat exchange tube 22 is disposed between a plurality of first heat exchange tubes 21 along the length of the first tube 11 , and one end of the second heat exchange tube 22 is connected to the second tube 12 . After the second heat exchange tube 22 is bent at least twice between the first tube 11 and the second tube 12 , the other end of the second heat exchange tube 22 is connected to the first tube 11 . The left side of the second heat exchange tube 22 is adjacent to one first heat exchange tube 21 , and the right side of the second heat exchange tube 22 is adjacent to another first heat exchange tube 21 . In some embodiments, using the second heat exchange tube in the bending area of the heat exchange component can increase the refrigerant flow resistance in this area, make the refrigerant distribution more uniform, and improve the heat exchange effect.

In some embodiments, the first fins 31 are provided between the first pipe segments 211 adjacent in the longitudinal direction of the first pipe 11 , and the third pipe segments 221 adjacent in the longitudinal direction of the first pipe 11 are provided with first fins 31 . For the second fins 32 , the size of the first fins 31 in the width direction of the first tube section 211 is larger than the size of the second fins 32 in the width direction of the third tube section 221 . The bending area of the heat exchange component adopts the second heat exchange tube and the second fin, which can improve the deformation and lodging of the fins inside the bending area after the heat exchange component is bent, thereby improving the drainage and heat exchange of the heat exchange component. Effect.

As shown in FIG. 7 and FIG. 8 , the fins 30 include first fins 31 and second fins 32 . The first fins 31 are arranged between adjacent first heat exchange tubes 21 , and the second fins 32 are arranged between adjacent first heat exchange tubes 21 . Between adjacent first heat exchange tubes 21 and second heat exchange tubes 22 or adjacent two second heat exchange tubes 22 . The length of the first fins 31 in the front-rear direction of the heat exchange assembly is L3, the length of the second fins 32 in the front-rear direction of the heat exchange assembly is L4, and L3 is greater than L4. Therefore, the use of the second heat exchange tube and the second fins in the bending area of the heat exchange assembly can improve the deformation and lodging of the fins inside the bending area after the heat exchange assembly is bent, thereby improving the heat exchange assembly. Drainage and heat exchange effect.

In some embodiments, the heat exchange tube 20 further includes at least one third heat exchange tube (not shown) including a fifth tube section, a sixth tube section, a fourth curved section and at least two fifth curved sections One end of the sixth pipe section is communicated with the first pipe 11, the other end of the sixth pipe section is communicated with one end of the fourth curved section, the fifth pipe section includes a fourth sub-pipe section, a fifth sub-pipe section and a sixth sub-pipe section, the fourth One end of the sub-pipe section is communicated with the other end of the fourth curved section, the other end of the fourth sub-pipe section is communicated with a fifth curved section, the other end of the fifth curved section is communicated with one end of the fifth sub-pipe section, and the fifth sub-pipe section is communicated with The other end is communicated with another fifth curved section, the other end of the other fifth curved section is communicated with one end of the sixth sub-pipe section, and the other end of the sixth sub-pipe section is communicated with the second pipe 12 . The fourth sub-tube section, the fifth sub-tube section and the sixth sub-tube section are arranged side by side in the length direction of the second tube 12, and the sixth tube section of the third heat exchange tube is adjacent to the first end of the first tube compared to the third sub-tube section The sixth sub-pipe section is disposed adjacent to the second end of the second pipe 12 compared to the fourth sub-pipe section.

Using the second heat exchange tube and the third heat exchange tube in the bending area of the heat exchange assembly can reduce the flow of the refrigerant in the bending area, reduce the flow resistance of the refrigerant, and improve the heat exchange capacity of the heat exchange assembly. At the same time, since the corresponding positions of the first tube and the second tube change before and after bending, when the bending area of the first tube and the second tube is communicated through the first heat exchange tube, the first heat exchange tube is located in the first heat exchange tube. The part on the tube side is squeezed with the adjacent first heat exchange tubes, and the first heat exchange tubes are easily deformed. However, in the embodiment of the present application, by arranging the second heat exchange tube and the third heat exchange tube in the bending area of the first tube and the second tube, the influence of the displacement caused by the bending of the first tube can be effectively reduced, and the effect of displacement can be reduced or even avoided. The adjacent heat exchange tubes at the bending regions of the first tube and the second tube are pressed against each other, thereby reducing the deformation of the heat exchange tubes.

As shown in FIG. 12 , the heat exchange system according to the embodiment of the present application includes the heat exchange assembly in the embodiment of the present application.

The first tube 11 and the second tube 12 of the heat exchange assembly both include bent portions, the first tube section 211 is a straight section, and the first tube 11 is parallel to the length of the first tube section 211 (as shown in FIG. 3 ). The upper and lower direction) (the first bending axis K1 shown in FIG. 3 ) is bent to form the bending portion 13 of the first tube, and the second tube 12 is wound around the length direction parallel to the first tube section 211 (as shown in FIG. 3 ). 3) direction (the second bending axis K2 shown in FIG. 3) to form the bending part 14 of the second pipe, the bending radius of the bending part 13 of the first pipe It is larger than the bending radius of the bending portion 14 of the second pipe.

The first heat exchange tube 21 is bent through the first bending section 213, and the second heat exchange tube 22 is bent through the second bending section 223, so that the first tube 11 is adjacent to the second tube 12, and the first tube 11 and the second tube are 12 are all bent towards the side where the second tube 12 is located to form the bending part 13 of the first tube and the bending part 14 of the second tube, and the bending radius of the bending part 13 of the first tube is larger than that of the second tube. The bending radius of the bending part 14.

In some embodiments, the connection between one of the second heat exchange tubes 22 and the first tube 11 is located at or adjacent to the bent portion 13 of the first tube, and the second heat exchange tube 22 is connected to the bent portion 13 of the first tube or adjacent to the bent portion 13 of the first tube. The junction of the second tube 12 is at or adjacent to the bend 14 of the second tube.

The beneficial effects of the heat exchange assembly and the heat exchange system according to the embodiments of the present application are as follows:

When the heat exchange component is working, the air volume is usually small on the left and right sides of the heat exchange component and the bending area of the heat exchange component, and the second heat exchange tube is used on the left and right sides of the heat exchange component and the bending area of the heat exchange component. It can effectively increase the flow resistance, promote the uniform distribution of the refrigerant, and improve the heat exchange capacity. It should be noted here that the bending area of the heat exchange assembly is formed by bending the first tube and the second tube of the heat exchange assembly in an arc shape.

The first heat exchange tube on the left or right side of the heat exchange assembly is set as the second heat exchange tube, so that the two ends of the first tube and the second tube are aligned after bending, which facilitates the installation of the heat exchanger and also promotes The refrigerant is evenly distributed, which improves the heat exchange capacity.

Using the second heat exchange tube in the bending area of the heat exchange component can increase the refrigerant flow resistance in this area, make the refrigerant distribution more uniform, and improve the heat exchange effect.

The refrigerant circulation area of the second heat exchange tube used in the heat exchange assembly is larger than that of the first heat exchange tube, which prevents the flow resistance from being too large when the difference in the wind field is small, thereby affecting the heat exchange effect.

The bending area of the heat exchange component adopts the second heat exchange tube and the second fin, which can improve the deformation and lodging of the fins inside the bending area after the heat exchange component is bent, thereby improving the drainage and heat exchange of the heat exchange component. Effect.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed 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, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

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

In this application, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly qualified. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this application, unless otherwise expressly stated and defined, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or the first and second features indirectly through an intermediary get in touch with. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limitations to the present application. Embodiments are subject to variations, modifications, substitutions and variations.

Claims

A heat exchange assembly, characterized in that, comprising:

a first tube and a second tube, the first tube having a first end in its length direction, the second tube having a second end in its length direction, the first end of the first tube and the The second end of the second pipe is located on the same side in the length direction of the first pipe;

a plurality of heat exchange tubes, the heat exchange tubes communicate with the first tubes and the second tubes, the heat exchange tubes include a plurality of first heat exchange tubes, and the first heat exchange tubes communicate with the first heat exchange tubes tube and the second tube,

The heat exchange tube includes at least one second heat exchange tube, the second heat exchange tube includes a third tube section, and the third tube section includes a first sub-tube section, a second sub-tube section, a third sub-tube section, and at least two A third curved section, one end of the first sub-pipe section is communicated with the second pipe, the other end of the first sub-pipe section is communicated with one of the third curved sections, and the other end of the third curved section is communicated with the second pipe. One end of the second sub-pipe section is communicated with, the other end of the second sub-pipe section is communicated with another third curved section, and the other end of the other third curved section is communicated with one end of the third sub-pipe section, The other end of the third sub-pipe section is communicated with the first pipe, and the first sub-pipe section, the second sub-pipe section and the third sub-pipe section are arranged along the length direction of the first pipe,

The third tube section of the second heat exchange tube is disposed adjacent to the first end of the first tube compared to the first heat exchange tube, and the third sub-tube section is adjacent to the first sub-tube section compared to the first sub-tube section. The first end of the first tube is provided.
The heat exchange assembly according to claim 1, wherein the first heat exchange tube comprises a first tube section, a second tube section and a first curved section, and one end of the first tube section communicates with the first tube , the other end of the first pipe section is communicated with one end of the first curved section, one end of the second pipe section is communicated with the second pipe, and the other end of the second pipe section is communicated with the first curved section connected to the other end,

The second heat exchange tube further includes a fourth tube section and a second curved section, one end of the fourth tube section is communicated with the second tube, and the other end of the fourth tube section is connected with one end of the second curved section One end of the first sub-pipe section is communicated with the other end of the second curved section, the third pipe section and the first pipe section are arranged along the length direction of the first pipe, and the fourth pipe section is connected to the second pipe section. The tube section is arranged along the length direction of the second tube, the third tube section of the second heat exchange tube is arranged adjacent to the first end of the first tube compared to the first tube section, and the third tube section of the second heat exchange tube is arranged adjacent to the first end of the first tube. Compared with the second tube section of the first heat exchange tube, the fourth tube section is disposed adjacent to the second end of the second tube, and the third sub tube section is adjacent to the first tube section compared to the first sub tube section. First-end settings.
The heat exchange assembly according to claim 2, wherein the first tube has a third end in its length direction, the second tube has a fourth end in its length direction, and the first tube has a third end in its length direction. The third end of the second pipe and the fourth end of the second pipe are located on the same side in the length direction of the first pipe, and the distance between the first end of the first pipe and the third end of the first pipe is L1 , the distance between the second end of the second pipe and the fourth end of the second pipe is L2, and the L1 is greater than the L2.
The heat exchange assembly according to claim 2 or 3, wherein there are multiple second heat exchange tubes, and a third tube section of the second heat exchange tube is compared with the first heat exchange tube The first tube section of the first heat exchange tube is disposed adjacent to the third end of the first tube, and the fourth tube section of the second heat exchange tube is disposed adjacent to the fourth end of the second tube compared to the second tube section of the first heat exchange tube. , the third sub-tube section of the second heat exchange tube is disposed adjacent to the third end of the first tube compared to the first sub-tube section of the second heat exchange tube.
The heat exchange assembly according to claim 2 or 3, wherein the first heat exchange tube comprises a plurality of first circulation channels arranged at intervals, and the first circulation channels communicate with the first tube and the second tube, the second heat exchange tube includes a plurality of second circulation channels arranged at intervals, the second circulation channels communicate with the first tube and the second tube, and the plurality of first circulation channels are in the first The sum of the cross-sectional areas on the cross-section of the heat exchange tubes is S1, the sum of the cross-sectional areas of the plurality of second flow channels on the cross-section of the second heat exchange tubes is S2, the S1 and S2 satisfy, and S2 is greater than or equal to S1.
The heat exchange assembly according to claim 2 or 3, characterized in that, there are a plurality of the second heat exchange tubes, one side of the second heat exchange tube in the length direction of the first tube and one The first heat exchange tubes are adjacent to each other, and the second heat exchange tube is adjacent to another first heat exchange tube on the other side in the length direction of the first tube.
The heat exchange assembly according to claim 2, 3 or 6, wherein the outer peripheral contour of the cross section of the first heat exchange tube is substantially a flat quadrilateral, and the cross section of the one second heat exchange tube is The outer peripheral outline is generally a flat quadrilateral, and the width of the second heat exchange tube is smaller than the width of the first heat exchange tube.
The heat exchange assembly according to any one of claims 2-7, characterized in that, first fins are provided between the first pipe sections adjacent in the length direction of the first pipes, and the first fins are There are second fins between the adjacent third tube sections in the length direction of a tube, and the size of the first fins in the width direction of the first tube section is larger than that of the second fins in the width direction of the first tube section. The dimension in the width direction of the third pipe section.
The heat exchange assembly according to claim 2 or 3, wherein the heat exchange pipe further comprises at least one third heat exchange pipe, and the third heat exchange pipe comprises a fifth pipe section, a sixth pipe section, a fourth A curved section and at least two fifth curved sections, one end of the sixth pipe section is in communication with the first pipe, the other end of the sixth pipe section is in communication with one end of the fourth curved section, and the fifth pipe section It includes a fourth sub-pipe section, a fifth sub-pipe section and a sixth sub-pipe section, one end of the fourth sub-pipe section is communicated with the other end of the fourth curved section, and the other end of the fourth sub-pipe section is connected with one of the first sub-pipe sections. The five curved segments are in communication, the other end of the fifth curved segment is in communication with one end of the fifth sub-pipe segment, the other end of the fifth sub-pipe segment is in communication with another fifth curved segment, and the other fifth curved segment is in communication The other end of the section communicates with one end of the sixth sub-pipe section, the other end of the sixth sub-pipe section communicates with the second pipe, the fourth sub-pipe section, the fifth sub-pipe section and the sixth sub-pipe section The sub-pipe sections are arranged side by side in the length direction of the second pipe,

The sixth tube section of the third heat exchange tube is disposed adjacent to the first end of the first tube compared to the third sub-tube section, and the sixth sub-tube section is adjacent to the fourth sub-tube section compared to the fourth sub-tube section The second end of the second tube is provided.
A heat exchange system, characterized in that it includes the heat exchange assembly according to any one of claims 1-9, wherein the first tube and the second tube of the heat exchange assembly both include bent portions, and the first A pipe section is a straight section, the first pipe is bent in a direction parallel to the length direction of the first pipe section to form a bent portion of the first pipe, and the second pipe is bent parallel to the length of the first pipe section. The lengthwise direction of the first pipe segment is bent to form the bending portion of the second pipe, and the bending radius of the bending portion of the first pipe is larger than the bending radius of the bending portion of the second pipe.
The heat exchange system according to claim 10, wherein a connection between a second heat exchange tube and the first tube is located at a bent portion of the first tube or adjacent to a bent portion of the first tube A folded portion, where the connection between the second heat exchange tube and the second tube is located at or adjacent to the folded portion of the second tube.