WO2020237960A1 - Distribution pipe and heat exchanger - Google Patents

Abstract

A distribution pipe and a heat exchanger. The distribution pipe comprises a pipe wall and an inner cavity, the pipe wall of the distribution pipe (12) is provided with a through hole (16) for a refrigerant to flow out. The distribution pipe is applied to the heat exchanger (1), and therefore, the uniformity of distribution of the refrigerant in the heat exchanger (1) can be relatively improved.

Description

Distribution pipe and heat exchanger

This application requires that the application date is May 31, 2019, the application number is 201910468897.3, the invention name is "distribution pipe and heat exchanger", the application date is May 31, 2019, the application number is 201910468883.1, and the invention name is " The priority of the Chinese patent application for "Distribution Pipe and Heat Exchanger", the entire content of which is incorporated into this application by reference.

Technical field

The invention relates to the technical field of heat exchangers, in particular to a distribution pipe and a heat exchanger with the distribution pipe.

Background technique

In the related art, the cross section of the distribution pipe in the heat exchanger is circular, and the uniformity of the refrigerant distribution in the heat exchanger needs to be improved.

Summary of the invention

For this reason, one aspect of the present invention proposes a distribution pipe, which can be applied to a heat exchanger to relatively improve the uniformity of refrigerant distribution in the heat exchanger.

Another aspect of the present invention also provides a heat exchanger.

The distribution pipe according to the embodiment of the first aspect of the present invention is used in a heat exchanger to distribute refrigerant. The distribution pipe has a pipe wall and an inner cavity, and the pipe wall of the distribution pipe is provided with a through hole for the refrigerant to flow out.

According to an embodiment of the present invention, the pipe wall of the distribution pipe includes an arc-shaped wall and a bottom wall, the bottom wall is generally straight, the arc-shaped wall has a first side edge and a second side edge, so The bottom wall has a first side edge and a second side edge, the first side edge of the arc-shaped wall is connected to the first side edge of the bottom wall, and the second side edge of the arc-shaped wall is connected to the bottom The second side edges of the walls are connected.

According to the distribution pipe of the embodiment of the present invention, by designing the pipe wall of the distribution pipe into a structure in which the arc-shaped wall and the bottom wall are connected, and the bottom wall is generally straight, that is, the cross section of the distribution pipe is generally D-shaped, so that The refrigerant is evenly distributed to the inner cavity of the header and multiple heat exchange tubes through the distribution pipe. That is, the application of the distribution pipe to the heat exchanger can relatively improve the uniformity of the refrigerant distribution in the heat exchanger.

According to an embodiment of the present invention, the cross section of the distribution pipe is substantially semicircular.

According to an embodiment of the present invention, the through holes are provided on the bottom wall, the through holes are arranged in a plurality of rows evenly arranged along the width direction of the bottom wall, and the through holes in each row are along the dividing line. The length of the piping is evenly arranged.

According to an embodiment of the present invention, the inner cavity of the distribution pipe includes a first cavity and a second cavity spaced apart along the circumferential direction of the distribution pipe, and the through hole includes a first through hole and a second through hole. A hole, the first through hole is in communication with the first cavity, and the second through hole is in communication with the second cavity.

According to an embodiment of the present invention, the first through holes and the second through holes are staggered along the length direction of the distribution pipe.

According to an embodiment of the present invention, the cross-sectional area of the first cavity and the second cavity are the same.

According to an embodiment of the present invention, the inner cavity of the distribution pipe is provided with at least two partitions extending along the length direction of the distribution pipe, and the at least two partitions divide the inner cavity of the distribution pipe into Multiple cavities; the through holes are in multiple groups, each group of the through holes corresponds to the corresponding cavity, and the multiple groups of through holes are in communication with the inner cavity of the distribution pipe.

According to an embodiment of the present invention, the at least two partitions include a first partition and a second partition, wherein the first partition and the second partition are arranged parallel to each other.

According to an embodiment of the present invention, the cross-sectional areas of the multiple cavities are the same.

According to an embodiment of the present invention, multiple groups of the through holes are arranged adjacently in the circumferential direction of the distribution pipe, and multiple groups of the through holes are staggered along the length direction of the distribution pipe.

According to an embodiment of the present invention, the inner cavity of the distribution pipe includes a first cavity and a second cavity spaced apart along the circumference of the distribution pipe, and the through hole includes a first through hole and a second through hole. A hole, the first through hole is in communication with the first cavity, and the second through hole is in communication with the second cavity.

According to an embodiment of the present invention, there are multiple first through holes, multiple second through holes, multiple first through holes and multiple second through holes in the distribution pipe Are arranged adjacent to each other in the circumferential direction, and the first through holes and the second through holes are staggered along the length direction of the distribution pipe. The heat exchanger according to the embodiment of the second aspect of the present invention includes a header, the header having a first end, a second end, a tube wall and an inner cavity; a distribution tube, the distribution tube is any one of the above implementations Example of the distribution pipe, the distribution pipe has a first end and a second end, the first end of the distribution pipe is a refrigerant inlet, the second end of the distribution pipe from the first end of the header Extend into the inner cavity of the header, the through hole communicates the inner cavity of the header and the inner cavity of the distribution pipe; heat exchange tubes, the heat exchange tubes are multiple, and the The heat exchange tubes are arranged along the length of the header, each of the heat exchange tubes has a first end and an inner cavity, and the first end of the heat exchange tube passes through the tube wall of the header and is inserted into the The inner cavity of the collecting pipe, the inner cavity of the heat exchange tube is communicated with the inner cavity of the collecting pipe.

According to an embodiment of the present invention, the inner cavity of the header includes a first chamber and a second chamber spaced apart along the length direction of the header, and the first through hole communicates with the first chamber. The cavity and the first cavity, and the second through hole communicates the second cavity and the second cavity.

According to an embodiment of the present invention, the heat exchange tube includes a plurality of first heat exchange tubes and a plurality of second heat exchange tubes, and the plurality of first heat exchange tubes are arranged at intervals along the length direction of the header. , The plurality of second heat exchange tubes are arranged at intervals along the length direction of the header, the first heat exchange tubes are in communication with the first chamber, and the second heat exchange tubes are connected to the second The chambers are connected.

According to an embodiment of the present invention, the heat exchanger further includes a baffle, the first chamber and the second chamber are separated by the baffle, and the baffle is provided with openings for the The distribution pipe passes through, the outer contour of the baffle includes a first arc section, a first connection section, a second arc section and a second connection section, and the diameter of the circle where the first arc section is located is larger than the The diameter of the circle where the two arc-shaped segments are located, and the first end of the first arc-shaped segment is connected to the first end of the first connecting segment, and the second end of the first connecting segment is connected to the second arc The first end of the second arc-shaped section is connected with the first end of the second connecting section, and the second end of the second connecting section is connected with the first arc-shaped section The second end of the heat exchanger is connected; the heat exchanger further includes fins, the fins are arranged between the adjacent heat exchange tubes, and at least part of the fins are connected to the heat exchange tubes.

According to an embodiment of the present invention, the length of the distribution pipe extending into the inner cavity of the collecting pipe is less than the length of the collecting pipe, and the inner cavity of the collecting pipe includes a length along the collecting pipe. The first part and the second part are arranged at intervals in the direction, the second end of the distribution pipe extends into the first part, and the length of the distribution pipe extending into the header is substantially equal to the length of the first part, so The first part is divided into the first chamber and the second chamber.

Description of the drawings

Fig. 1 is a schematic diagram of a heat exchanger according to an embodiment of the present invention;

2 is a schematic structural view of a heat exchanger that divides the inner cavity of a distribution pipe into two cavities according to an embodiment of the present invention;

Figure 3 is a schematic cross-sectional view of the heat exchanger in Figure 2 in an embodiment;

Figure 4 is a schematic cross-sectional view of the heat exchanger in Figure 2 in another embodiment;

FIG. 5 is a schematic diagram of the distribution pipe and the partition in FIG. 4 in an embodiment;

Fig. 6 is a schematic diagram of the distribution pipe and the partition in Fig. 5 in another embodiment;

FIG. 7 is a schematic diagram of the distribution pipe and the partition in FIG. 6 in another embodiment;

Fig. 8 is a schematic structural view of a heat exchanger that divides the inner cavity of a distribution pipe into three cavities according to an embodiment of the present invention;

Figure 9 is a schematic cross-sectional view of the heat exchanger in Figure 8 in an embodiment;

Figure 10 is a schematic cross-sectional view of the heat exchanger in Figure 8 in another embodiment;

Fig. 11 is a schematic diagram of the distribution pipe and the partition in Fig. 10;

Fig. 12 is a schematic cross-sectional view of the heat exchanger in Fig. 8 in another embodiment;

Fig. 13 is a schematic diagram of the distribution pipe and the partition in Fig. 12;

Fig. 14 is a schematic view of another embodiment of Fig. 13; Fig. 15 is a schematic structural view of a heat exchanger in which the inner cavity of a distribution pipe is divided into four cavities according to an embodiment of the present invention;

Figure 16 is a schematic cross-sectional view of the heat exchanger in Figure 15;

Figure 17 is a schematic cross-sectional view of a heat exchanger with a bottom wall set to be smaller than the width of a heat exchange tube according to an embodiment of the present invention;

18 is a schematic cross-sectional view of a heat exchanger in which the width of the bottom wall is set equal to the width of the heat exchange tube according to an embodiment of the present invention;

19 is a schematic cross-sectional view of a heat exchanger in which the width of the bottom wall is set to be greater than the width of the heat exchange tube according to an embodiment of the present invention;

20 is a schematic cross-sectional view of a heat exchanger with through holes arranged on an arc-shaped wall according to an embodiment of the present invention;

21 is a schematic cross-sectional view of a heat exchanger with through holes provided on the bottom wall of a distribution pipe according to an embodiment of the present invention;

Figure 22 is a schematic cross-sectional view of a heat exchanger that evenly distributes the distribution on the bottom wall according to an embodiment of the present invention;

23 is a schematic diagram of staggered arrangement of adjacent groups of through holes in the width of the bottom wall according to an embodiment of the present invention;

24 is a schematic cross-sectional view of another embodiment of FIG. 16;

FIG. 25 is a schematic cross-sectional view of still another embodiment of FIG. 16;

Figure 26 is a schematic structural diagram of a baffle according to an embodiment of the present invention;

Fig. 27 is a schematic diagram of a heat exchanger according to another embodiment of the present invention.

Reference signs:

Heat exchanger 1,

Header 11, chamber 111, first chamber 1111, second chamber 1112, third chamber 1113, first part 101, second part 102,

Distribution pipe 12, arc-shaped wall 121, bottom wall 122, cavity 123, first cavity 1231, second cavity 1232, third cavity 1233,

Partition 13,

Heat exchange tube 14, first heat exchange tube 141, second heat exchange tube 142, third heat exchange tube 143,

Baffle 15, first arc section 151, second arc section 152, first connection section 153, second connection section 154,

Through hole 16, first through hole 161, second through hole 162, third through hole 163,

The fin 17.

Detailed ways

The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the application, but should not be understood as a limitation to the application. Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are only examples of devices and methods consistent with some aspects of the application as detailed in the appended claims.

The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit the application. In the description of this application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise" and other directions or The positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it cannot be understood as a restriction on this application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this application, "multiple" means two or more than two, unless otherwise specifically defined.

In the description of this application, it should be noted that the terms "installation", "connection", and "connection" should be interpreted broadly unless otherwise clearly specified and limited. For example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components or the interaction between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In this application, unless expressly stipulated and defined otherwise, the "above" or "below" of the first feature of the second feature may include the first and second features in direct contact, or may include the first and second features Not in direct contact but through other features between them. Moreover, "above", "above" and "above" the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than the second feature. The "below", "below", and "below" of the first feature of the second feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature. The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the implementations can be mutually supplemented or combined with each other.

The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit the application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the implementation can be combined with each other.

As shown in FIGS. 1-27, the heat exchanger 1 according to the embodiment of the present application includes a header 11, a distribution tube 12 for distributing refrigerant, and a plurality of heat exchange tubes 14. The header 11 has a first end, a second end, a tube wall and an inner cavity. The distribution pipe 12 has a first end (the left end of the distribution pipe 12 shown in FIG. 1) and a second end (the right end of the distribution pipe 12 shown in FIG. 1). The first end of the distribution pipe 12 is a refrigerant inlet, and the distribution pipe 12 The second end of the header extends from the first end of the header 11 into the inner cavity of the header 11.

The plurality of heat exchange tubes 14 are arranged along the length direction of the header 11 (the left-right direction shown in FIG. 1). Optionally, as shown in FIG. 1, a plurality of heat exchange tubes 14 are arranged at even intervals along the length direction of the header 11, that is, the distance between adjacent heat exchange tubes 14 is equal.

Each heat exchange tube 14 has a first end (the upper end of the heat exchange tube 14 shown in FIG. 1) and an inner cavity. The first end of the heat exchange tube 14 passes through the tube wall of the header 11 and is inserted into the header of the header 11 The inner cavity, the inner cavity of the heat exchange tube 14 communicates with the inner cavity of the header 11.

The distribution pipe 12 according to an embodiment of the present application will be described below with reference to the drawings.

The distribution pipe 12 according to the embodiment of the present application has a pipe wall and an inner cavity, and the pipe wall of the distribution pipe 12 is provided with a through hole 16 communicating the inner cavity of the header 11 and the inner cavity of the distribution pipe 12.

Please refer to FIG. 3, in an embodiment of the present invention, the pipe wall of the distribution pipe 12 includes an arc-shaped wall 121 and a bottom wall 122. The arc-shaped wall 121 has a first side edge and a second side edge. 122 has a first side edge and a second side edge, and the bottom wall 122 is substantially straight. As shown in FIG. 3, the bottom wall 122 is an elongated plate extending in the left-right direction.

The first side edge of the arc wall 121 is connected to the first side edge of the bottom wall 122, and the second side edge of the arc wall 121 is connected to the second side edge of the bottom wall 122, so that the arc wall 121 and the bottom wall 122 Connected, and the inner surface of the arc-shaped wall 121 and the inner surface of the bottom wall 122 enclose the inner cavity of the distribution pipe 12. In other words, the cross section of the distribution pipe 12 is substantially D-shaped.

During the working process of the heat exchanger 1, the refrigerant can enter the inner cavity of the distribution pipe 12 through the first end of the distribution pipe 12. The refrigerant flows from the first end to the second end in the distribution pipe 12, and the refrigerant can pass through the distribution pipe 12. The through hole 16 in the wall of the pipe 12 enters the inner cavity of the header 11. The first end of the collecting pipe 11 is provided with an inlet suitable for the entry of the distribution pipe 12, the pipe wall of the distribution pipe 12 is sealed with the inlet of the first end of the collecting pipe 11, and the second end of the collecting pipe 11 is closed. The first ends of the plurality of heat exchange tubes 14 pass through the tube wall of the header 11, and the first ends of the heat exchange tubes 14 are provided with openings so that the inner cavity of the heat exchange tube 14 and the inner cavity of the header 11 In communication with each other, the refrigerant in the header 11 can enter the inner cavity of the heat exchange tube 14 through the first end of the heat exchange tube 14, and the refrigerant can exchange heat in the inner cavity of the heat exchange tube 14.

In an embodiment of the present application, the arc-shaped wall 121 may extend along the length direction of the distribution pipe 12. In the cross section of the distribution pipe 12, the arc-shaped wall 121 is a circular arc, as shown in Figure 3, and one end of the bottom wall 122 is connected to one end of the arc-shaped wall 121, and the other end of the bottom 122 is connected to the arc-shaped wall 121. Connect at the other end. The bottom wall 122 and the arc-shaped wall 121 extend in the same direction, and the bottom wall 122 may be configured as a rectangular plate extending along the length direction of the distribution pipe 12. Wherein, the two side edges of the bottom wall 122 that are directly opposite in the width direction are the first side edge and the second side edge, respectively, and the two side edges of the arc-shaped wall 121 that are directly opposite in the circumferential direction of the distribution pipe 12 are respectively the first side edge. The side edge and the second side edge, the first side edge of the bottom wall 122 is connected with the first side edge of the arc-shaped wall 121, and the second side edge of the bottom wall 122 is connected with the second side edge of the arc-shaped wall 121.

According to the distribution pipe 12 of the embodiment of the present application, the distribution pipe 12 is arranged in the above structure in which the arc-shaped wall 121 and the bottom wall 122 are connected, and the bottom wall 122 is generally straight, that is, the cross section of the distribution pipe 12 is generally D-shaped, The refrigerant can evenly enter the inner cavity of the header 11 of the heat exchanger and the plurality of heat exchange tubes 14 through the distribution pipe 12. Therefore, according to the distribution pipe 12 of the embodiment of the present application, the uniformity of the distribution of the refrigerant in the heat exchanger can be relatively improved. Moreover, the distribution pipe 12 occupies less volume in the header 11, leaving space for the arrangement of the heat exchange tubes 14.

According to the heat exchanger 1 of the present application, the inner cavity of the distribution pipe 12 is in communication with the inner cavity of the header 11, and the refrigerant enters the header 11 through the distribution pipe 12, and extends into the header through one end of a plurality of heat exchange tubes 14 In the header 11, the refrigerant can evenly enter the first end of each heat exchange tube 14 in the inner cavity of the header 11. The refrigerant is evenly distributed in the header 11, and each heat exchange tube 14 The flow rate of the intermediate refrigerant is approximately the same, so that the distribution of the refrigerant in each heat exchange tube 14 is more even.

The cross section of the distribution pipe 12 is generally D-shaped, that is, the cross section of the distribution pipe 12 is configured to approximate the shape of the letter "D". In this embodiment, the cross-sectional structure of the distribution pipe 12 is generally "D" shape, which can improve the uniformity of refrigerant distribution in the heat exchanger and reduce the space occupied by the distribution pipe 12 in the header 11 One end of the heat exchange tube 14 can be arranged closer to the distribution pipe 12, which reserves sufficient space for the arrangement of the heat exchange tube 14.

In an embodiment of the present application, the cross section of the arc-shaped wall 121 is substantially semicircular. In other words, the arc wall 121 is in the cross section of the distribution pipe 12, and the arc wall 121 is configured as a semicircle. As a result, the cross-sectional area of the distribution pipe 12 can be increased. When the distribution pipe has the same flow rate, the cross-section of the distribution pipe is configured as a semicircle, which can reduce the circumference of the pipe wall of the distribution pipe 12.

In the header 11, the heights of the first ends of the plurality of heat exchange tubes 14 are the same, and the connecting line of the first ends of the plurality of heat exchange tubes 14 can be arranged in parallel with the bottom wall 122 of the distribution tube 12, and the arc wall 121 The cross-section structure is a semi-circular arc, especially when the through hole 16 is arranged at the uppermost end of the arc-shaped wall 121 as shown in FIG. 20, the refrigerant enters the collecting pipe more evenly through the through hole 16 on the wall of the distribution pipe 12 11 in.

According to some embodiments of the present application, as shown in FIG. 20 and FIG. 21, the through hole 16 that communicates the inner cavity of the distribution pipe 12 with the inner cavity of the header 11 may be provided on the arc-shaped wall 121 and the bottom wall of the distribution pipe 12 At least one of 122 is on. In other words, the through hole 16 can be provided at any position of the arc-shaped wall 121 or at any position of the bottom wall 122.

Furthermore, the opening direction of the through hole 16 is arbitrary. In the cross section of the distribution pipe 12 with the through hole 16, the included angle α between the center of the through hole 16 and the center of the bottom wall 122 and the width direction of the bottom wall 122, and the included angle α is 0°<α<180 °.

As shown in FIG. 22, according to an embodiment of the present application, the through holes 16 are provided in multiples, and the adjacent through holes 16 are spaced apart. The multiple through holes 16 connect the distribution pipe 12 with the header 11, and the distribution pipe 12 The refrigerant in the inner cavity can enter the inner cavity of the header 11 through the plurality of through holes 16, and the plurality of through holes 16 can make the refrigerant in the distribution pipe 12 flow into the header 11 quickly and uniformly, The flow rate of the refrigerant in the distribution pipe 12 in the header 11 is increased.

Wherein, the through hole 16 may be provided in the bottom wall 122. The through holes 16 are arranged in a plurality of rows evenly spaced along the width direction of the bottom wall 122. Each row of through holes 16 is evenly spaced along the length of the distribution pipe 12. The through holes 16 are uniformly arranged along the width direction of the bottom wall 122 so that the refrigerant can flow into the header 11 evenly across the width of the distribution pipe 12. The through holes 16 of each row are evenly spaced along the length of the distribution pipe 12, and the distance between the through holes 16 in the length is the same as the distance between the heat exchange tubes 14 in the length direction, so that the cooling medium can be distributed. The pipe 12 flows into the header 11 uniformly in the longitudinal direction.

As shown in FIGS. 3 to 14, according to some embodiments of the present application, the inner cavity of the distribution pipe 14 is provided with at least one partition 13 which is arranged in the inner cavity of the distribution pipe 12 and along the length direction of the distribution pipe 12. Extend to divide the inner cavity of the distribution tube 12 into a plurality of independent cavities 123, and the wall of the distribution tube 12 corresponding to the plurality of cavities 123 is provided with a set of through holes 16.

It should be noted here that “a group” should be understood in a broad sense and is not limited to the case where a plurality of through holes 16 are used as a group, that is, one through hole 16 may also be used as a group. In other words, a group of through holes 16 may include one through hole 16, and may also include two or three or more through holes 16.

Wherein, as shown in FIGS. 3 and 9, the extending direction of the partition 13 is the same as the extending direction of the distribution pipe 12 and is configured as a strip-shaped partition 13. The partition 13 may also have a first side edge and a second side edge. The first side edge of the partition 13 is connected to the center line of the bottom wall 122, and the second side edge of the partition 13 is connected to the inner surface of the arc-shaped wall 121. . In the cross section of the distribution pipe 12, the partition 13 can divide the inner cavity of the distribution pipe 12 into a plurality of independent cavities 123 arranged at intervals along the circumferential direction of the distribution pipe 12, and each cavity 123 has a first end. Imported for refrigerant.

The corresponding tube wall of each cavity 123 is provided with a through hole 16 communicating with the inner cavity of the header 11 to ensure that each independent cavity 123 can communicate with the header 11, and the refrigerant in each cavity 123 can be Into the different chambers 111 of the header 11.

A partition 13 is provided in the inner cavity of the distribution pipe 12 to divide the inner cavity of the distribution pipe 12 into a plurality of independent cavities 123, each cavity 123 does not interfere with each other, and each cavity 123 is connected to the manifold 11 is independently connected, the refrigerant in the distribution pipe 12 can enter the header 11 through multiple independent cavities 123, and the cavities 123 will not affect each other. The refrigerant flows from the refrigerant at the first end of the distribution pipe 12 The inlet enters each cavity 123, and the refrigerant enters the header 11 through each cavity 123, so that the refrigerant distribution in the header 11 is more uniform, and the uniformity of the refrigerant distribution by the distribution pipe 12 is improved. The uniformity of the refrigerant in the plurality of heat exchange tubes 14 is also further improved, which improves the heat dissipation efficiency of the heat exchanger 1.

3 and 5, the inner cavity of the distribution pipe 12 includes a first cavity 1231 and a second cavity 1232. The first cavity 1231 and the second cavity 1232 pass through the partition 13 along the circumference of the distribution pipe 12 Spaced arrangement. The through hole 16 includes a first through hole 161 and a second through hole 162. The first through hole 161 is at least one and forms a group of through holes 16, and the second through hole 162 is at least one and forms another group of through holes 16. The first through hole 161 communicates with the first cavity 1231, and the second through hole 162 communicates with the second cavity 1232. In other words, the first through hole 161 is provided on the wall of the distribution pipe 12 corresponding to the first cavity 1231, and the second through hole 162 is provided on the pipe wall of the distribution pipe 12 corresponding to the second cavity 1232.

As shown in FIGS. 3, 9 and 16 to 21, according to some embodiments of the present application, the cross section of each cavity 123 is fan-shaped. In other words, on the cross section of the distribution pipe 12, the arc-shaped wall 121 is configured as a semicircle, at least one partition 13 is provided in the inner cavity of the distribution pipe 12, and the partition 13 is configured to be the same length as the distribution pipe 12. Strip shape, the partition 13 has a first end and a second end opposite in width, wherein the first end of the partition 13 is connected to the center in the width direction of the bottom wall 122, and the second section of the partition is connected to the distribution pipe 12 The arc-shaped walls 121 are connected.

According to some specific embodiments of the present application, the cross-sectional areas of the multiple cavities 123 are the same. The refrigerant enters each cavity 123 through the first end of each cavity 123, and is distributed to the inner cavity of the header 11 through each cavity 123. In this embodiment, the refrigerant is distributed to the inner cavity of the header 11 through a plurality of cavities 123 with fan-shaped cross sections and substantially the same cross-sectional area. Since the cross-sectional areas of the cavities 123 are substantially the same, they enter each cavity. The flow rate of the refrigerant in 123 is approximately the same, thereby improving the uniformity of the distribution of the refrigerant among the different cavities 123. It can be understood that when the lengths of the multiple cavities 123 in the distribution pipe 12 are the same as the length of the distribution pipe 12, the volumes of the multiple distribution pipes 12 are the same.

According to an embodiment of the present application, the inner cavity of the header 11 includes a plurality of chambers 111 spaced apart along the length of the header 11. Specifically, the heat exchanger further includes a baffle 15, and adjacent chambers 111 are separated by the baffle 15. The baffle 15 is provided with openings to facilitate the passage of the distribution pipe 12.

The numbers of the cavities 123 and the cavities 111 are the same, and multiple sets of through holes 16 are respectively provided on the wall of the distribution pipe 12 corresponding to the multiple cavities 111, so that the multiple cavities 123 and the multiple cavities 111 correspond one-to-one地Connected. In other words, the wall of the distribution pipe 12 corresponding to each cavity 111 is provided with a set of through holes 16, and the set of through holes 16 are opened at a position corresponding to a cavity 123, so that the cavity 111 can pass through the assembly. The hole 16 communicates with the cavity 123. The refrigerant enters each cavity 123 of the distribution pipe 12 at the first end of the distribution pipe 12. The refrigerant in each cavity 123 enters the corresponding cavity 111 through a set of corresponding through holes 16.

It should be noted here that multiple cavities 123 and multiple cavities 111 are correspondingly communicated, which means that one cavity 123 is connected to one cavity 111, and each cavity 123 passes through a corresponding corresponding on the wall of the distribution pipe 12. A group of through holes 16 enters into the cavity 111 of the corresponding header 11 to ensure that the refrigerant in one cavity 123 can only enter the corresponding cavity 111, so that the refrigerant in each cavity 111 The amount is approximately the same, which further improves the uniformity of the refrigerant distribution in the heat exchanger 1.

As shown in Figures 2 and 3, the inner cavity of the distribution tube 12 includes a first cavity 1231 and a second cavity 1232, and the inner cavity of the header 11 includes first cavities spaced apart along the length of the header 11 The chamber 1111 and the second chamber 1112. The first through hole 161 communicates with the first cavity 1111 and the first cavity 1231, and the second through hole 162 communicates with the second cavity 1112 and the second cavity 1232. In other words, the first through hole 161 is opened on the wall of the distribution tube 12 in the first chamber 1111, and the second through hole 162 is opened on the wall of the distribution tube 12 in the second chamber 1112. Since the first through hole 161 corresponds to the first cavity 1231, the second through hole 162 corresponds to the second cavity 1232, and the first cavity 1231 and the second cavity 1232 are spaced apart along the circumferential direction of the distribution pipe 12, Therefore, the first through holes 161 and the second through holes 162 are staggered along the length direction of the distribution pipe 12, that is, the first through holes 161 and the second through holes 162 are not aligned along the length direction of the distribution pipe 12.

Further, multiple sets of through holes 16 are uniformly arranged along the length direction of the distribution pipe 12, in other words, the spacing between adjacent sets of through holes 16 is the same. In addition, since the plurality of cavities 123 are arranged at intervals along the circumferential direction of the distribution pipe 12, and the plurality of cavities 111 are arranged at intervals along the length direction of the header 11, the adjacent groups of through holes 16 are staggered along the length direction of the distribution pipe 12. . In other words, adjacent groups of through holes 16 are not aligned along the length direction of the distribution pipe 12.

In some embodiments, the cross-sectional areas of the multiple cavities 123 are the same. Please refer to FIG. 5. On this basis, the length of each cavity 123 is the same as the length of the distribution pipe 12, and the volume of the multiple cavities 123 is the same. Further, the volumes of the multiple chambers 111 are the same.

The refrigerant is evenly distributed into each cavity 123 at the first end of the distribution pipe 12, and each cavity 123 is connected to a corresponding cavity 111. After the refrigerant in the cavity 123 is evenly distributed, it enters the cavity 111. The flow rate of the refrigerant in each chamber 111 in the header 11 is the same, which further improves the uniformity of refrigerant distribution.

According to an embodiment of the present application, as shown in FIG. 26, the outer peripheral profile of the baffle 15 includes a first arc section 151, a first connecting section 153, a second arc section 152, and a second connecting section 154. The first arc The diameter of the circle where the shaped section 151 is located is greater than the diameter of the circle where the second arc-shaped section 152 is located, and the first end of the first arc-shaped section 151 is connected to the first end of the first connecting section 153. The end is connected to the first end of the second arc-shaped section 152, the second end of the second arc-shaped end is connected to the first end of the second connecting section 154, and the second end of the second connecting section 154 is connected to the first arc-shaped section 151. Connected to the second end.

The shape of the baffle 15 may be the same as the cross-sectional shape of the header 11, and the first connecting section 153 and the second connecting section 154 of the baffle 15 may extend in the horizontal direction. Correspondingly, the header 11 is also A support part that stops against the first connecting section 153 and the second connecting section 154 is provided, and the support part stops against the first connecting section 153 and the second connecting section 154 on the baffle 15 to support the baffle 15, The distribution pipe 12 passes through the openings on the plurality of baffles 15, and the weight of the distribution pipe 12 and the baffles 15 can be transferred to the header 11 through the first connecting section 153 and the second connecting section 154, and through the first connecting section 153 With the arrangement of the second connecting section 154, the collecting pipe 11 can effectively support the baffle 15 to ensure the stability of the baffle 15, and at the same time, the weight of the distribution pipe 12 is transferred to the collecting pipe 11 through the baffle 13 The pipe wall improves the stability of the distribution pipe 12.

Since the baffle 15 is configured as a non-centrosymmetric structure, arranging the baffle 15 in the collecting pipe 11 can also prevent the circumferential rotation of the baffle 15. A plurality of baffles 15 are arranged on the length of the collecting pipe to make The multiple baffles 15 can effectively support the distribution pipe, reduce the displacement of the cross-sectional centroid of the distribution pipe 12 in the direction perpendicular to the axis, and improve the installation reliability of the distribution pipe 12.

In some embodiments, the heat exchange tubes 14 are arranged in multiple groups arranged at intervals along the length direction of the header 11. The heat exchange tubes 14 in each group are arranged at intervals along the length of the header 11, the number of heat exchange tubes 14 in the multiple groups is the same, and the heat exchange tubes 14 and the multiple chambers 111 in the multiple groups can pass through multiple sets of through holes 16 Connect correspondingly respectively.

The heat exchange tube 14 corresponding to each chamber 111 is defined as a group of heat exchange tubes 14. The number of heat exchange tubes 14 inserted into each chamber 111 is the same, and the heat exchange tubes 14 extend into the inner cavity of the header 11 The height is consistent. Since the flow rate of the refrigerant entering the respective chambers 111 from the cavities 123 of the distribution pipe 12 is the same, the refrigerant enters the corresponding set of heat exchange tubes 14 in the chamber 111, so that each chamber 111 is connected to the respective heat exchange tubes 14 The flow rate of the incoming refrigerant is the same, and the refrigerant in each chamber 111 is further evenly distributed, thereby further improving the uniformity of the refrigerant distribution of the heat exchanger 1, so as to give full play to the heat dissipation area of the heat exchange tube and increase the heat exchanger 1 heat dissipation efficiency.

In some embodiments, the heat exchange tube 14 is a flat tube, which is also called a microchannel heat exchange tube or a multi-channel heat exchange tube in the industry. The use of the flat tube is beneficial to reduce the weight and size of the air conditioner. Among them, the flat tube is usually provided with multiple channels for the flow of refrigerant. Adjacent channels are isolated from each other. Multiple channels are arranged in a row to affect the width of the flat tube. The flat tube is flat as a whole, its length is greater than its width, and its width is greater than its thickness. The length direction of the flat tube is the direction of refrigerant flow determined by the passage in the flat tube. The length direction of the flat tube can be straight, broken, or curved. The flat tube mentioned here is not limited to this type, and may be of other forms. For example, adjacent channels may not be completely isolated. For another example, all channels can be arranged in two rows, as long as the width is still greater than the thickness.

The width L of the heat exchange tube 14 is greater than or equal to or less than the width D of the bottom wall 122. The plurality of heat exchange tubes 14 are arranged at intervals along the extending direction of the distribution tube 12. The extension direction of the distribution tube 12 is perpendicular to the width direction of the heat exchange tube 14. The distribution tube 12 is arranged above the plurality of heat exchange tubes 14, and the width of the heat exchange tube 14 will not be affected by the width of the bottom wall 122 of the distribution tube 12. Regardless of whether the width of the heat exchange tube 14 is greater than, equal to or less than the width of the bottom wall 122, the intermediate refrigerant in the header 11 can uniformly enter the heat exchange tube 14.

When the width of the heat exchange tube 14 is greater than the width of the bottom wall 122, the heat exchange tube 14 has a larger width, which increases the heat exchange area of the heat exchanger 1 and improves the heat exchange efficiency of the heat exchanger 1. When the width of the heat exchange tube 14 is equal to the width of the bottom wall 122, the distribution tube 12 and the bottom wall 122 of the heat exchange tube 14 are directly opposite, so that the shape of the heat exchanger 1 is more regular and the arrangement of the heat exchanger 1 is convenient. When the width of the heat exchange tube 14 is smaller than the width of the bottom wall 122, the volume occupied by the heat exchanger 1 can be reduced, and the arrangement of the heat exchanger 1 is more flexible.

As shown in Figures 3 to 7, in some specific embodiments, the partition 13 is one. The partition 13 is provided in the inner cavity of the distribution tube 12 and extends along the length of the distribution tube 12 to separate the distribution tube 12 The inner cavity is divided into a first cavity 1231 and a second cavity 1232. Please refer to FIG. 3, in an embodiment, one end of the partition 13 in the width direction is connected to the center in the width direction of the bottom wall 122, and the other end of the partition 13 in the width direction is connected to the arc-shaped wall 121. The centers of the distribution pipe 12 in the circumferential direction are connected, so that the cross sections of the first cavity 1231 and the second cavity 1232 are both fan-shaped, and the volume of the first cavity 1231 and the volume of the second cavity 1232 are the same. Please refer to FIGS. 4 to 7. In other embodiments, the cross section of the distribution tube 12 is circular, and the partition 13 abuts against the inner surface of the distribution tube 12 in the radial direction. The length of the distribution pipe 12 extending into the inner cavity of the collecting pipe 11 is substantially equal to the length of the collecting pipe 11. The baffle 15 is one, and the baffle 15 divides the inner cavity of the header 11 into a plurality of first chambers 1111 and second chambers 1112 arranged at intervals along the length direction of the header 11. The first cavity 1231 is in communication with the first cavity 1111, and the second cavity 1232 is in communication with the second cavity 1112. The volume of the first chamber 1111 and the second chamber 1112 are the same.

Of course, in some other embodiments, the volume of the first cavity 1231 and the volume of the second cavity 1232 may be different, and the volumes of the first chamber 1111 and the second chamber 1112 are also different, but the refrigerant is flowing In the process, due to factors such as phase change or pressure drop, despite the above-mentioned volume difference, the final effect of uniform refrigerant distribution can be achieved.

The second cavity 1232 and the first cavity 1231 both extend along the length direction of the distribution pipe 12 and have the same volume. Therefore, the first cavity 1231 and the second cavity 1232 have the same cross-sectional area and the same flow rate. The refrigerant enters the first cavity 1231 and the second cavity 1232 through the first end of the distribution pipe 12. The baffle 15 divides the inner cavity of the header 11 into a first chamber 1111 and a second chamber 1112 with the same volume. The first cavity 1111 communicates with the first cavity 1231, and the second cavity 1112 communicates with the second cavity 1232, which can ensure that the refrigerant entering the first cavity 1111 through the first cavity 1231 and passing through the second cavity 1231 The flow rate of the refrigerant entering the second chamber 1112 into the body 1232 is the same.

On the basis of the above embodiment, more chambers and cavities that are connected to each other can be provided. As shown in FIGS. 8 to 14, the cavity 123 further includes a third cavity 1233, and the cavity 111 further includes a third cavity 1113. , And the third cavity 1233 and the third cavity 1113 are in communication. As shown in FIG. 15, FIG. 16, FIG. 24, and FIG. 25, the cavity 123 further includes a fourth cavity, and the cavity 111 further includes a fourth cavity, and the fourth cavity is in communication with the fourth cavity.

It can be understood that the pipe wall of the distribution pipe 12 is provided with two sets of through holes 16, a set of through holes 16 corresponding to the first cavity 1231 and the first cavity 1111, and the set of through holes 16 can be opened in the bottom wall 122 It can also be opened on the arc-shaped wall 121 as long as it corresponds to the first cavity 1231 and the first cavity 1111. The other set of through holes 16 corresponds to the second cavity 1232 and the second cavity 1112, and the set of through holes 16 can be opened on the bottom wall 122 or on the arc-shaped wall 121, as long as they are connected to the second cavity 1232. Just correspond to the second chamber 1112

As shown in an embodiment of FIG. 23, the bottom wall 122 includes a first section and a second section sequentially arranged along the length direction of the distribution pipe 12. The first section is in the first chamber 1111, and the second section is in the second chamber. Room 1112. The through hole 16 includes a plurality of first through holes 161 and a plurality of second through holes 162. The plurality of first through holes 161 form a group of through holes 16, and the plurality of second through holes 162 form another group of through holes. A plurality of first through holes 161 are provided in the first section to communicate with the first cavity 1231 and the first chamber 1111, and a plurality of second through holes 162 are provided in the second section to communicate with the second cavity 1232 and the second chamber 1111. 1112. The plurality of first through holes 161 and the plurality of second through holes 162 are arranged staggered along the width direction of the bottom wall 122. In other words, one group of through holes 16 and another group of through holes 16 are not aligned in the width direction of the bottom wall 122.

In some embodiments, the plurality of heat exchange tubes 14 includes a plurality of first heat exchange tubes 141 arranged at intervals along the length direction of the header 11 and a plurality of second heat exchange tubes arranged at intervals along the length direction of the header 11. Pipe 142. The number of the first heat exchange tubes 141 and the number of the second heat exchange tubes 142 are the same. The plurality of first heat exchange tubes 141 are in communication with the first chamber 1111, and the plurality of second heat exchange tubes 142 are in communication with the second chamber 1112.

In this embodiment, the first cavity 1111 and the second cavity 1112 have the same volume, the same length, and the same cross section, and the amount of refrigerant entering the first cavity 1231 and the second cavity 1232 is the same. Therefore, the liquid level of the refrigerant in the first chamber 1111 and the second chamber 1112 are the same. The number of first heat exchange tubes 141 inserted into the first chamber 1111 is the same as the number of second heat exchange tubes 142 inserted into the second chamber 1112, so that the speed at which the refrigerant enters the heat exchange tubes 14 is also The same further ensures that the flow rate of the refrigerant in each heat exchange tube 14 is the same.

Similarly, in the embodiment of FIGS. 8-14, the heat exchange tube 14 may also include a plurality of third heat exchange tubes 143. The number of the third heat exchange tubes 143 is the same as the number of the first heat exchange tubes 141 and the second heat exchange tubes 143. The number of heat pipes 142 is the same. The plurality of third heat exchange tubes 143 are in communication with the third chamber 1113.

In the embodiments of FIG. 15, FIG. 16, FIG. 24, and FIG. 25, the heat exchange tube 14 may further include a plurality of fourth heat exchange tubes. The number of fourth heat exchange tubes is the same as the number of third heat exchange tubes 143, the number of first heat exchange tubes 141, and the number of second heat exchange tubes 142. A plurality of fourth heat exchange tubes communicate with the fourth chamber.

As shown in an embodiment shown in FIGS. 4-7, the pipe wall of the distribution pipe 12 includes a first section and a second section arranged in sequence along the length of the distribution pipe 12, and the through hole 16 includes a first through hole 161 and a second through hole. The first through hole 161 is provided in the first section and has multiple holes, the first through hole 161 is connected to the first cavity 1231 and the first cavity 1111, and the second through hole 162 is provided in the second section and has multiple The second through hole 162 communicates with the second cavity 1232 and the second cavity 1112, and the plurality of first through holes 161 and the plurality of second through holes 162 are staggered along the length direction of the distribution pipe 12.

In some embodiments, as shown in FIG. 10, FIG. 11 and FIG. 24, the cross section of the cavity 123 is fan-shaped, the cross section of the distribution pipe 12 is circular, and the circular distribution pipe 12 is provided with a plurality of partitions. Board 13. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

The partition 13 is configured as a rectangular partition 13 with the same length as the distribution pipe 12, the partition 13 and the distribution pipe 12 extend in the same direction, and the partition 13 has a first side edge and a second side edge that are opposite in width, wherein The first side edge is connected to the inner circumferential surface of the distribution pipe 12, and the second side edge is disposed through the axis of the distribution pipe 12.

The refrigerant enters into the distribution pipe 12 through the refrigerant inlet at the first end of the distribution pipe 12. The refrigerant is evenly distributed at the first end of the distribution pipe 12, and the cross-section of the cavity 123 is configured as a fan shape, so that it can enter each cavity The flow rate of the refrigerant in the body 123 is approximately the same, which improves the uniformity of the refrigerant distribution among the different cavities 123.

In other embodiments, there are multiple partitions 13 and the multiple partitions 13 are arranged in parallel and spaced apart. In other words, as shown in FIGS. 12, 13, 14 and 25, there are at least two partitions 13 and at least two partitions 13 extend along the length of the distribution pipe 12, and at least two partitions 13 include the first The partition and the second partition, and the first partition and the second partition are parallel and spaced apart from each other. The partition 13 has a first side edge and a second side edge that are opposite in width, wherein the first side edge and the The inner circumferential surface of the distribution pipe 12 is connected, and the second side edge is also connected with the inner circumferential surface of the distribution pipe 12.

According to the heat exchanger of the embodiment of the present application, the inner cavity of the distribution pipe 12 is divided into a plurality of cavities 123 by at least two partitions 13 arranged parallel to each other and spaced apart. The multiple cavities 123 of the pipe 12 are evenly distributed to the inner cavity of the header 11 of the heat exchanger 1 and the multiple heat exchange tubes 14 through the multiple cavities 123 of the distribution pipe 12. Therefore, applying the distribution pipe 12 to the heat exchanger 1 can relatively improve the uniformity of the distribution of the refrigerant in the heat exchanger 1. Moreover, the partitions 13 parallel to each other are arranged in the inner cavity of the distribution pipe 12, which is more conducive to manufacturing and uniform distribution of the refrigerant than non-parallel partitions.

In some specific embodiments, multiple sets of through holes 16 are arranged adjacently in the circumferential direction of the distribution pipe 12. As shown in FIG. 13, the first through hole 161 corresponding to the first cavity 1231, the second through hole 162 corresponding to the second cavity 1232, and the third through hole 163 corresponding to the third cavity 1233 are all located in the distribution pipe 12 Upper side. Or, as shown in FIG. 14, the first through hole 161 corresponding to the first cavity 1231, the second through hole 162 corresponding to the second cavity 1232, and the third through hole 163 corresponding to the third cavity 1233 are all located in the distribution pipe. The underside of 12. As a result, the opening directions of the multiple sets of through holes 16 on the pipe wall of the distribution pipe 12 are substantially the same, which can further improve the uniformity of the refrigerant distribution.

In some embodiments, the sets of through holes 16 are staggered along the length of the distribution pipe 12. In other words, the adjacent two sets of through holes 16 are not aligned in the length direction of the distribution pipe 12.

In some embodiments, as shown in FIGS. 5-7, the through hole 16 corresponding to the cavity 123 of the distribution pipe 12 and the cavity 111 of the header 11 can be arranged at any position in the circumferential direction of the distribution pipe 12. Furthermore, the opening direction of the through hole 16 is arbitrary. In the cross section of the distribution pipe 12 with the through hole 16, the angle between the line connecting the center of the through hole 16 and the center of the distribution pipe 12 and the axial direction of the through hole 16 is α, and the angle α is 0° <α<180°.

In some embodiments, each group of through holes 16 is provided in multiple, and the multiple through holes 16 are arranged at intervals, and the multiple through holes 16 communicate each cavity 123 of the distribution pipe 12 with a cavity 111 of the header 11 , The refrigerant in each cavity 123 of the distribution pipe 12 can enter a cavity 111 of the header 11 through a plurality of through holes 16 which can make the refrigerant in the distribution pipe 12 quickly and evenly It flows into the header 11 to increase the flow rate of the refrigerant in the distribution pipe 12 in the header 11.

In some embodiments, the length of the distribution pipe 12 extending into the inner cavity of the collecting pipe 11 is less than the length of the collecting pipe 11, and the inner cavity of the collecting pipe 11 includes first parts 101 spaced apart along the length of the collecting pipe 11. And the second part 102, the second end of the distribution tube 12 extends into the first part 101, and the length of the distribution tube 12 extending into the header 11 is substantially equal to the length of the first part 101, the first part 101 is divided into a plurality of chambers 111 . As shown in Figure 16, the heat exchanger 1 is a dual-process heat exchanger. The inner cavity of the header 11 is divided into a first part 101 and a second part 102. The right end of the distribution pipe 12 extends into the first part of the header 11. One part 101 does not extend into the second part 102. The first part 101 includes a plurality of chambers 111 arranged at intervals along the length direction of the header 11. As shown in FIG. 16, the first part 101 is divided into two chambers 111 by a baffle 15. It can be understood that the inner cavity of the distribution pipe 12 is provided with a partition 13 to divide the inner cavity of the distribution pipe 12 into two cavities 123.

In some embodiments, the heat exchanger 1 further includes fins 17, which are arranged between adjacent heat exchange tubes 14. At least part of the fins 17 are in communication with the heat exchange tubes 14, and the fins 17 are arranged on the opposite side. Between two adjacent heat exchange tubes 14, the heat exchange area of the heat exchange tubes 14 can be increased, so that the temperature between the two adjacent heat exchange tubes 14 is more uniform, and the heat exchange efficiency of the heat exchanger 1 is improved .

The heat exchange system according to the present application is briefly described below.

The heat exchange system according to the present application is provided with the heat exchanger 1 of the above embodiment. Since the heat exchange system according to the present application is provided with the heat exchanger 1 of the above embodiment, the refrigerant distribution of the heat exchange system is more uniform and sufficient. The heat exchange area of the heat exchange tube 14 in the heat exchanger 1 is utilized to improve the heat exchange efficiency of the heat exchange system. At the same time, the arrangement between the distribution tube 12 and the header 11 is flexible and the space utilization rate is high.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean specific features described in conjunction with the embodiment or example , The structure, materials, or characteristics are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without mutual contradiction.

Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present application. A person of ordinary skill in the art can comment on the foregoing within the scope of the present application. The embodiment undergoes changes, modifications, substitutions and modifications.

Claims (18)

1. A distribution pipe used in a heat exchanger to distribute refrigerant, characterized in that the distribution pipe has a pipe wall and an inner cavity, and the pipe wall of the distribution pipe is provided with a through hole for the refrigerant to flow out.
2. The distribution pipe according to claim 1, wherein the pipe wall of the distribution pipe comprises an arc-shaped wall and a bottom wall, the arc-shaped wall has a first side edge and a second side edge, and the bottom wall has The first side edge and the second side edge, the bottom wall is generally straight, the first side edge of the arc-shaped wall is connected to the first side edge of the bottom wall, and the second side edge of the arc-shaped wall The side edge is connected to the second side edge of the bottom wall.
3. The distribution pipe of claim 2, wherein the cross section of the distribution pipe is substantially semicircular.
4. The distribution pipe according to claim 2, wherein the through holes are provided on the bottom wall, and the through holes are arranged in multiple rows evenly arranged along the width direction of the bottom wall, and each row of the The through holes are uniformly arranged along the length direction of the distribution pipe.
5. The distribution tube according to claim 2, wherein the inner cavity of the distribution tube includes a first cavity and a second cavity spaced apart along the circumference of the distribution tube, and the through hole includes a first cavity. A through hole and a second through hole, the first through hole is in communication with the first cavity, and the second through hole is in communication with the second cavity.
6. The distribution pipe according to claim 5, wherein the first through holes and the second through holes are staggered along the length direction of the distribution pipe.
7. The distribution pipe of claim 5, wherein the first cavity and the second cavity have the same cross-sectional area.
8. The distribution pipe according to claim 1, wherein the inner cavity of the distribution pipe is provided with at least two partitions extending along the length direction of the distribution pipe, and the at least two partitions divide the The inner cavity of the pipe is divided into multiple cavities; the through holes are in multiple groups, each group of the through holes corresponds to the corresponding cavity, and the multiple groups of through holes communicate with the inner cavity of the distribution pipe .
9. The distribution pipe according to claim 8, wherein the at least two partitions comprise a first partition and a second partition, wherein the first partition and the second partition are arranged in parallel with each other.
10. The distribution pipe according to claim 8, wherein the cross-sectional area of a plurality of the cavities is the same.
11. 8. The distribution pipe according to claim 8, wherein a plurality of groups of the through holes are arranged adjacently in the circumferential direction of the distribution pipe, and multiple groups of the through holes are arranged staggered along the length direction of the distribution pipe.
12. The distribution tube according to claim 1, wherein the inner cavity of the distribution tube includes a first cavity and a second cavity spaced apart along the circumference of the distribution tube, and the through hole includes a first cavity. A through hole and a second through hole, the first through hole is in communication with the first cavity, and the second through hole is in communication with the second cavity.
13. The heat exchanger according to claim 12, wherein there are multiple first through holes, multiple second through holes, multiple first through holes and multiple second through holes. The through holes are arranged adjacently in the circumferential direction of the distribution pipe, and the first through holes and the second through holes are staggered along the length direction of the distribution pipe.
14. A heat exchanger, characterized in that it comprises:

    A header, the header having a first end, a second end, a tube wall and an inner cavity;

    The distribution pipe, the distribution pipe is the distribution pipe according to any one of claims 1-13, the distribution pipe has a first end and a second end, the first end of the distribution pipe is a refrigerant inlet, so The second end of the distribution pipe extends from the first end of the collecting pipe into the inner cavity of the collecting pipe, and the through hole communicates with the inner cavity of the collecting pipe and the inner cavity of the distribution pipe;

    The heat exchange tube is a plurality of heat exchange tubes, and the plurality of heat exchange tubes are arranged along the length direction of the collecting tube. Each heat exchange tube has a first end and an inner cavity. The first end of the tube is inserted into the inner cavity of the header through the tube wall of the header, and the inner cavity of the heat exchange tube is in communication with the inner cavity of the header.
15. The heat exchanger according to claim 14, wherein the distribution pipe is the distribution pipe according to any one of claims 5-7, 12-13, and the inner cavity of the collecting pipe includes an edge The first cavity and the second cavity are spaced apart in the length direction of the header, the first through hole communicates with the first cavity and the first cavity, and the second through hole communicates with the first cavity. The second cavity and the second cavity.
16. The heat exchanger according to claim 14, wherein the heat exchange tube comprises a plurality of first heat exchange tubes and a plurality of second heat exchange tubes, and the plurality of first heat exchange tubes are along the collector The flow tubes are arranged at intervals in the length direction, a plurality of the second heat exchange tubes are arranged at intervals along the length of the header, the first heat exchange tubes are in communication with the first chamber, and the second heat exchange tubes are The heat pipe communicates with the second chamber.
17. The heat exchanger according to claim 14, characterized in that the heat exchanger further comprises a baffle, the first chamber and the second chamber are separated by the baffle, and the baffle An opening is provided for the distribution pipe to pass through. The outer peripheral profile of the baffle includes a first arc section, a first connection section, a second arc section and a second connection section, where the first arc section is The diameter of the circle is greater than the diameter of the circle where the second arc-shaped section is located, and the first end of the first arc-shaped section is connected to the first end of the first connecting section, and the second The end is connected to the first end of the second arc-shaped section, the second end of the second arc-shaped section is connected to the first end of the second connecting section, and the second end of the second connecting section is connected to The second ends of the first arc-shaped segments are connected;

    The heat exchanger further includes fins, the fins are arranged between the adjacent heat exchange tubes, and at least part of the fins are connected with the heat exchange tubes.
18. The heat exchanger according to claim 15, wherein the length of the distribution pipe extending into the inner cavity of the collecting pipe is less than the length of the collecting pipe, and the inner cavity of the collecting pipe includes The first part and the second part are spaced apart in the length direction of the collecting pipe, the second end of the distribution pipe extends into the first part, and the length of the distribution pipe extending into the collecting pipe is substantially equal to According to the length of the first part, the first part is divided into the first chamber and the second chamber.

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