Distribution structure and heat exchanger with same

Abstract

The utility model provides a distribution structure and a heat exchanger with the distribution structure, and the distribution structure comprises a collecting pipe with a placing cavity; the distribution pipe is provided with a containing cavity and an inlet, the inlet is formed in the first end of the distribution pipe, the containing cavity is provided with a first notch, and the first notch is formed in the second end of the distribution pipe; the first partition plate is arranged in the containing cavity to divide the containing cavity into a first chamber and a second chamber, the first chamber is provided with a plurality of first distribution hole sets, each first distribution hole set is provided with a plurality of first distribution holes, the first chamber is communicated with the containing cavity through the first distribution holes, one end of the first chamber is communicated with the inlet, and the other end of the first chamber is communicated with the second partition plate; the other end of the first cavity is communicated with the second cavity through the first notch, a plurality of second distribution holes are formed in the second cavity at intervals in the axial direction, the second cavity is communicated with the containing cavity through the second distribution holes, and the first cavity is communicated with the second cavity through the first notch. According to the technical scheme provided by the invention, the problem of non-uniform liquid distribution of the distribution pipe in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, and in particular to a distribution structure and a heat exchanger having the same. Background Art

[0002] At present, the microchannel heat exchanger includes a first header, a second header and a plurality of flat tubes, wherein the plurality of flat tubes are arranged between the first header and the second header, one end of the plurality of flat tubes are connected to the first header, and the other end of the plurality of flat tubes are connected to the second header, and a distribution structure of a distribution tube is arranged in the first header for liquid separation. However, since the refrigerant in the distribution tube is a gas-liquid two-phase, usually more gas will flow out of the distribution hole near the inlet end of the distribution tube, and more liquid will flow out of the distribution hole near the end of the distribution tube, which will cause uneven liquid separation in the distribution tube, thereby causing uneven heat exchange in the heat exchanger, and further affecting the performance of the heat exchanger. Utility Model Content

[0003] The utility model provides a distribution structure and a heat exchanger with the same, so as to solve the problem of uneven liquid distribution in a distribution pipe in the prior art.

[0004] According to one aspect of the utility model, a distribution structure is provided, including: a collecting pipe, the collecting pipe having a placement cavity; a distribution pipe, arranged in the placement cavity, the distribution pipe having a accommodating cavity and an inlet, the distribution pipe having a first end and a second end arranged oppositely, the inlet being arranged at the first end of the distribution pipe, the accommodating cavity having a first notch, and the first notch being arranged at the second end of the distribution pipe; a first partition plate, arranged in the accommodating cavity, the first partition plate extending along the axial direction of the distribution pipe to divide the accommodating cavity into a first chamber and a second chamber that are interconnected, the first chamber being provided with a plurality of first distribution hole groups, the first distribution hole group having a plurality of first distribution holes arranged at intervals along the axial direction of the first chamber, the first chamber being connected to the placement cavity through the plurality of first distribution holes, one end of the first chamber being connected to the inlet, the other end of the first chamber being connected to the second chamber through the first notch, the second chamber being provided with a plurality of second distribution holes arranged at intervals along the axial direction, and the second chamber being connected to the placement cavity through the second distribution holes.

[0005] According to the technical solution of the utility model, the distribution pipe is arranged in the placement cavity of the collecting pipe. A first partition plate is arranged in the distribution pipe to divide the accommodating cavity in the distribution pipe into a first chamber and a second chamber. One end of the first chamber is connected to the inlet, and the other end of the first chamber is connected to the second chamber through a first notch. A plurality of first distribution holes and a plurality of second distribution holes are respectively arranged on the first chamber and the second chamber, so that the refrigerant in the first chamber and the second chamber flows into the placement cavity through the first distribution holes and the second distribution holes respectively. In this arrangement, when the gas-liquid two-phase refrigerant flows in the first chamber and the second chamber, the gaseous refrigerant flowing out of the distribution pipe gradually decreases from the first end of the distribution pipe near the first chamber to the first end of the distribution pipe near the second chamber, and when the gas-liquid two-phase refrigerant flows into the second chamber, most of the gaseous refrigerant has been discharged, and the refrigerant flowing out of the second distribution hole near the first end of the distribution pipe in the second chamber is liquid. Therefore, the gas-liquid two-phase refrigerant is separated by the first chamber and the second chamber in the distribution pipe, which can balance the flow rate of the refrigerant flowing out of the first end and the second end of the distribution pipe, so that the flow rate of the refrigerant in multiple flat tubes is the same, and the uniformity of the refrigerant separation is improved. That is, the gas-liquid two-phase refrigerant first flows from the first distribution hole group of the first chamber to the manifold, and the gas-liquid two-phase refrigerant flowing out of the first distribution hole group is uneven. The refrigerant flowing out of the second distribution hole of the second chamber supplements the liquid refrigerant in the manifold to the refrigerant flowing out of the first chamber, thereby reducing the proportion of gaseous refrigerant flowing from the first chamber to the manifold, thereby improving the situation where the refrigerant in the first chamber is distributed to the manifold and lacks liquid refrigerant, effectively ensuring the uniformity of the refrigerant flowing out of the first end and the second end of the distribution pipe, ensuring the performance of the heat exchanger, avoiding uneven heat exchange of the heat exchanger, and improving the user experience.

[0006] Furthermore, the plurality of first distribution holes and the plurality of second distribution holes are arranged one by one in the axial direction of the distribution pipe, so that the uniformity of the distribution pipe in distributing the refrigerant can be further improved, and the processing of the distribution pipe is facilitated.

[0007] Furthermore, the cross-sectional area of ​​the first chamber is larger than the cross-sectional area of ​​the second chamber. This arrangement can increase the circulation speed of the refrigerant in the second chamber, avoid the pressure loss generated when the refrigerant passes through the first chamber, relatively reduce the pressure loss, and is conducive to the uniformity of refrigerant liquid separation.

[0008] Furthermore, the cross-sectional area of ​​the first chamber is the same as the cross-sectional area of ​​the second chamber, and a first protrusion is provided on the side of the first partition plate close to the second chamber; and / or a second protrusion is provided on the side wall of the second chamber. In this way, the flow rate of the refrigerant in the second chamber can be increased. Since the first chamber is connected to the inlet, the flow rate of the refrigerant in the first chamber is greater than the flow rate of the refrigerant in the second chamber. With the above structure, the flow rate of the refrigerant in the first chamber can be the same as the flow rate of the refrigerant in the second chamber, further ensuring the distribution effect of the distribution structure, so that the heat exchange of the heat exchanger can be further made uniform.

[0009] Furthermore, the distribution structure also includes: at least one second partition plate, which is arranged in the first chamber, and the second partition plate is arranged to extend along the axial direction of the distribution pipe to divide the first chamber into multiple independent chambers, each chamber is correspondingly provided with a first distribution hole group, and multiple chambers are all connected to the inlet, and the first chamber has multiple first notches, and the multiple first notches are arranged one-to-one with the multiple chambers, and the multiple chambers are respectively connected to the second chamber through the corresponding first notches. Such a configuration can increase the circulation speed of the refrigerant in the distribution pipe and accelerate the distribution efficiency of the refrigerant. At the same time, the refrigerant flows from the multiple chambers to the manifold, and the manifold is replenished by the second chamber through the second distribution hole, which effectively reduces the proportion of gaseous refrigerant flowing from the manifold to the multiple flat tubes, and improves the heat exchange efficiency.

[0010] Furthermore, the projections of the plurality of first distribution holes in the axial direction of the distribution pipe are evenly spaced from the first end to the second end of the distribution pipe. This arrangement can ensure that the gaseous refrigerant is evenly distributed from the first end to the second end of the distribution pipe when it flows out through the first distribution holes. At the same time, the second chamber replenishes the refrigerant flowing from the plurality of chambers to the manifold, which is conducive to the even distribution of the liquid refrigerant.

[0011] Furthermore, a second partition plate is provided, the second partition plate divides the first chamber into two independent chambers, the two chambers are defined as a first sub-chamber and a second sub-chamber, two first distribution hole groups are provided, the two first distribution hole groups are respectively provided in the first sub-chamber and the second sub-chamber, the first sub-chamber and the second sub-chamber are both connected to the inlet, the first chamber has two first notches, the first sub-chamber is provided corresponding to one of the first notches, the second sub-chamber is provided corresponding to the other first notch, the two first notches are provided at the end of the second end of the distribution pipe, the first sub-chamber and the second sub-chamber are respectively connected to the second chamber through the corresponding first notches. Such a configuration can increase the circulation speed of the refrigerant in the distribution pipe and improve the heat exchange efficiency, and at the same time, its structure is simple, which is convenient for assembling the second partition plate.

[0012] Furthermore, one of the first distribution hole groups is arranged at the second end of the distribution pipe, and another first distribution hole group is arranged at the first end of the distribution pipe, and a plurality of second distribution holes are arranged at intervals from the first end to the second end of the distribution pipe. Such an arrangement can prevent the refrigerant from entering the second chamber from the inlet, and prevent the refrigerant from being completely discharged from the first chamber, so that the refrigerant can flow into the second chamber after passing through the first chamber, and the gas-liquid two-phase refrigerant first flows from the first end and the second end of the distribution pipe to the manifold, and the second chamber can replenish the liquid refrigerant from the manifold close to the first end to the second end of the distribution pipe, further balancing the flow of the liquid refrigerant flowing out of the first end and the second end of the distribution pipe, and improving the uniformity of the refrigerant liquid separation.

[0013] Furthermore, the distribution structure also includes: a third partition plate, which is arranged in the second chamber, and the third partition plate is arranged to extend along the axial direction of the distribution pipe to divide the second chamber into a third sub-chamber and a fourth sub-chamber. The second chamber also has a second notch, and the second notch is arranged at the second end of the distribution pipe. The third sub-chamber and the fourth sub-chamber are connected to the first chamber through the first notch and the second notch. The second distribution hole is connected to the third sub-chamber, and the fourth sub-chamber is provided with a fourth distribution hole so that the fourth sub-chamber is connected to the placement chamber. Such a configuration can increase the circulation speed of the refrigerant in the second chamber and increase the heat exchange efficiency of the heat exchanger.

[0014] Furthermore, the second chamber also has a fifth sub-chamber, which is arranged downstream of the third sub-chamber and the fourth sub-chamber, one end of the third sub-chamber and one end of the fourth sub-chamber are both connected to the second notch, and the other end of the third sub-chamber and the other end of the fourth sub-chamber are both connected to the fifth sub-chamber. This arrangement facilitates adjustment of the flow rate at different positions in the second chamber, increases the disturbance of the refrigerant flowing to the manifold, is conducive to uniform refrigerant liquid separation, and has a simple structure and is easy to assemble.

[0015] According to another aspect of the utility model, a heat exchanger is provided, the heat exchanger includes a plurality of flat tubes, a liquid inlet pipe, a liquid outlet pipe and the distribution structure provided above, the liquid inlet pipe is connected to the inlet of the distribution structure, the distribution structure is provided with a plurality of plug holes distributed at intervals along the axial direction of the collecting pipe, the plurality of flat tubes are arranged one by one corresponding to the plurality of plug holes, one end of the flat tube is plugged into the corresponding plug hole and is connected to the placement cavity of the distribution structure, and the other ends of the plurality of flat tubes are all connected to the liquid outlet pipe. With such a configuration, the distribution pipe can evenly distribute the liquid refrigerant, so that the flow rate of the refrigerant in the plurality of flat tubes is the same, thereby ensuring the performance of the heat exchanger, avoiding uneven heat exchange of the heat exchanger, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the structure of a collector provided according to Embodiment 1 of the present utility model is shown;

[0018] Figure 2 A schematic diagram showing the structure of the distribution pipe and the first partition plate matched with each other according to the first embodiment of the utility model is shown;

[0019] Figure 3 A cross-sectional view showing the matching of the distribution pipe and the first partition plate provided according to the first embodiment of the utility model;

[0020] Figure 4 A cross-sectional view showing another perspective of the distribution pipe and the first partition plate provided in accordance with the first embodiment of the utility model;

[0021] Figure 5 A cross-sectional view showing the matching of the distribution pipe and the first partition plate provided according to the second embodiment of the utility model;

[0022] Figure 6 A schematic diagram showing the structure of the distribution pipe provided in the third embodiment of the present utility model in cooperation with the first partition plate and the second partition plate;

[0023] Figure 7 A schematic structural diagram showing another perspective of the matching of the distribution pipe with the first partition plate and the second partition plate according to the third embodiment of the present utility model;

[0024] Figure 8 A schematic structural diagram showing another perspective of the matching of the distribution pipe with the first partition plate and the second partition plate according to the third embodiment of the present utility model;

[0025] Fig. 9 A cross-sectional view showing the matching of the distribution pipe, the first partition plate and the second partition plate provided according to the third embodiment of the present utility model;

[0026] Fig.10 A schematic diagram of the structure of the distribution structure provided according to the fourth embodiment of the present utility model is shown;

[0027] Fig.11 A cross-sectional view showing the matching of the distribution pipe and the first partition plate provided according to the fifth embodiment of the utility model;

[0028] Fig.12 A cross-sectional view showing the matching of the distribution pipe and the first partition plate provided according to the sixth embodiment of the utility model;

[0029] Fig.13 A cross-sectional view showing the matching of the distribution pipe and the first partition plate provided according to the seventh embodiment of the utility model;

[0030] Fig.14 A schematic structural diagram of a heat exchanger provided according to Embodiment 8 of the present utility model is shown.

[0031] The above drawings include the following reference numerals:

[0032] 10. Collecting pipe; 11. Placement cavity; 12. Plug-in hole;

[0033] 20. Distribution pipe;

[0034] 21. Accommodating cavity; 211. First notch;

[0035] 212, first chamber; 2121, first distribution hole; 2122, first sub-chamber; 2123, second sub-chamber;

[0036] 213, second chamber;

[0037] 2131, second distribution hole; 2132, third sub-chamber; 2133, fourth sub-chamber; 2134, fifth sub-chamber;

[0038] 214, the second gap; 22, import;

[0039] 31. First partition plate; 32. Second partition plate; 33. Third partition plate;

[0040] 100, flat tube; 200, liquid inlet pipe; 300, liquid outlet pipe; 400, liquid outlet collecting pipe. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0042] like Figures 1 to 4As shown, the first embodiment of the present application provides a distribution structure, including a manifold 10, a distribution pipe 20 and a first partition plate 31. The manifold 10 has a placement cavity 11. The distribution pipe 20 is arranged in the placement cavity 11, and the distribution pipe 20 has a receiving cavity 21 and an inlet 22. The distribution pipe 20 has a first end and a second end that are arranged oppositely, and the inlet 22 is arranged at the first end of the distribution pipe 20. The receiving cavity 21 has a first notch 211, and the first notch 211 is arranged at the second end of the distribution pipe 20. The first partition plate 31 is disposed in the accommodating chamber 21. The first partition plate 31 is extended along the axial direction of the distribution tube 20 to divide the accommodating chamber 21 into a first chamber 212 and a second chamber 213 that are interconnected. The first chamber 212 is provided with a plurality of first distribution hole groups along the axial direction. The first distribution hole groups have a plurality of first distribution holes 2121 that are spaced apart along the axial direction of the first chamber 212. The first chamber 212 is connected to the placement chamber 11 through the plurality of first distribution holes 2121. One end of the first chamber 212 is connected to the inlet 22, and the other end of the first chamber 212 is connected to the second chamber 213 through the first notch 211. The second chamber 213 is provided with a plurality of second distribution holes 2131 spaced apart along the axial direction. The second chamber 213 is connected to the placement chamber 11 through the second distribution holes 2131.

[0043] By applying the technical solution of the present application, the distribution pipe 20 is arranged in the placement chamber 11 of the manifold 10. A first partition plate 31 is arranged in the distribution pipe 20 to separate the accommodation chamber 21 in the distribution pipe 20 into a first chamber 212 and a second chamber 213. One end of the first chamber 212 is connected to the inlet 22, and the other end of the first chamber 212 is connected to the second chamber 213 through the first notch 211. A plurality of first distribution holes 2121 and a plurality of second distribution holes 2131 are respectively arranged in the first chamber 212 and the second chamber 213, so that the refrigerant in the first chamber 212 and the second chamber 213 flows into the placement chamber 11 through the first distribution holes 2121 and the second distribution holes 2131, respectively. With such a configuration, when the gas-liquid two-phase refrigerant flows in the first chamber 212 and the second chamber 213, the gaseous refrigerant flowing out of the distribution pipe 20 gradually decreases from the first chamber 212 close to the first end of the distribution pipe 20 to the second chamber 213 close to the first end of the distribution pipe 20, and when the gas-liquid two-phase refrigerant flows into the second chamber 213, most of the gaseous refrigerant has been discharged, and the refrigerant flowing out of the second distribution hole 2131 of the second chamber 213 close to the first end of the distribution pipe 20 is in liquid state. Therefore, the gas-liquid two-phase refrigerant is separated by the first chamber 212 and the second chamber 213 in the distribution pipe 20, which can balance the flow rate of the refrigerant flowing out of the first end and the second end of the distribution pipe 20, so that the flow rate of the refrigerant in the plurality of flat tubes 100 is the same, and the uniformity of the separation of the refrigerant is improved. That is, the gas-liquid two-phase refrigerant first flows from the first distribution hole group of the first chamber 212 to the manifold 10, and the gas-liquid two-phase refrigerant flowing out of the first distribution hole group is uneven. The refrigerant flowing out of the second distribution hole 2131 of the second chamber 213 supplements the liquid refrigerant in the manifold 10 for the refrigerant flowing out of the first chamber 212, thereby reducing the proportion of gaseous refrigerant flowing from the first chamber 212 to the manifold 10, thereby improving the situation where the refrigerant from the first chamber 212 is distributed to the manifold 10 and lacks liquid refrigerant, effectively ensuring the uniformity of the refrigerant flowing out of the first and second ends of the distribution pipe 20, ensuring the performance of the heat exchanger, avoiding uneven heat exchange of the heat exchanger, and improving the user experience.

[0044] Furthermore, the plurality of first distribution holes 2121 and the plurality of second distribution holes 2131 are arranged one by one in the axial direction of the distribution pipe 20. Such arrangement can further improve the uniformity of the distribution pipe 20 in distributing the refrigerant, and facilitates the processing of the distribution pipe 20.

[0045] In this embodiment, the flow area of ​​the first chamber 212 is the same as the flow area of ​​the second chamber 213 . This arrangement has a simple structure and is convenient for assembling the distribution pipe 20 and the first partition plate 31 .

[0046] Specifically, the first notch 211 may be provided on the first partition plate 31. Optionally, there may be a gap between the end of the first partition plate 31 close to the second end of the distribution pipe 20 and the end surface of the second end of the distribution pipe 20, and the gap forms the first notch 211.

[0047] The cross-sectional area of ​​the first chamber 212 is the same as the cross-sectional area of ​​the second chamber 213. A first protrusion is provided on the side of the first partition plate 31 close to the second chamber 213; or a second protrusion is provided on the side wall of the second chamber 213; or a first protrusion is provided on the side of the first partition plate 31 close to the second chamber 213, and a second protrusion is provided on the side wall of the second chamber 213.

[0048] Specifically, a first protrusion is provided on one side of the first partition plate 31 close to the second chamber 213. In this way, the flow rate of the refrigerant in the second chamber 213 can be increased. Since the first chamber 212 is connected to the inlet 22, the flow rate of the refrigerant in the first chamber 212 is greater than the flow rate of the refrigerant in the second chamber 213. With the above structure, the flow rate of the refrigerant in the first chamber 212 and the flow rate of the refrigerant in the second chamber 213 can be made the same, further ensuring the distribution effect of the distribution structure, so that the heat exchange of the heat exchanger can be further made uniform.

[0049] Furthermore, a second protrusion is provided on the side wall of the second chamber 213. Such a configuration can also increase the flow rate of the refrigerant in the second chamber 213. The staff can set the first protrusion or the second protrusion according to the needs.

[0050] That is, by adopting the above structure, the first protrusion or the second protrusion can reduce the volume of the second chamber 213, thereby reducing the pressure loss generated by the first chamber 212, and further increasing the flow rate of the refrigerant in the second chamber 213, and causing disturbances in the liquid separation of the refrigerant, thereby improving the uniformity of the liquid separation of the liquid refrigerant.

[0051] Optionally, a plurality of first protrusions are provided on the first partition plate 31, and the plurality of first protrusions are spaced apart along the axial direction of the distribution pipe 20. Such a configuration facilitates increasing the flow rate of the refrigerant in the second chamber 213. Moreover, the staff can set the position and number of the first protrusions according to the requirements.

[0052] Optionally, a plurality of second protrusions are provided on the side wall of the second chamber 213 , and the plurality of second protrusions are spaced apart along the axial direction of the distribution pipe 20 .

[0053] Optionally, a plurality of first protrusions are provided on the first partition plate 31 , a plurality of second protrusions are provided on the side wall of the second chamber 213 , and the plurality of first protrusions and the plurality of second protrusions are alternately arranged along the axial direction of the distribution pipe 20 .

[0054] like Figure 5 As shown, the second embodiment of the present application provides a distribution structure, which is different from the first embodiment in that the flow area of ​​the first chamber 212 is different from the flow area of ​​the second chamber 213, and the cross-sectional area of ​​the first chamber 212 is larger than the cross-sectional area of ​​the second chamber 213. Such a configuration can change the flow rate of the refrigerant in the first chamber 212 and the second chamber 213, and the structure is simple and easy to assemble. Among them, in the present application, the flow area of ​​the second chamber 213 is smaller than the flow area of ​​the first chamber 212. Such a configuration can increase the flow rate of the refrigerant in the second chamber 213, avoid the pressure loss generated when the refrigerant passes through the first chamber 212, relatively reduce the pressure loss, and is conducive to the uniformity of the liquid separation of the refrigerant.

[0055] like Figures 6 to 9 As shown, the third embodiment of the present application provides a distribution structure, which is different from the first embodiment in that the distribution structure further includes at least one second partition plate 32, and the second partition plate 32 is arranged in the first chamber 212. The second partition plate 32 is arranged to extend along the axial direction of the distribution pipe 20 to divide the first chamber 212 into a plurality of independent chambers, each chamber is correspondingly provided with a first distribution hole group, and the plurality of chambers are all connected to the inlet 22. There are a plurality of first notches 211 in the first chamber 212, and the plurality of first notches 211 are arranged one by one with the plurality of chambers, and the plurality of chambers are respectively connected with the second chamber 213 through the corresponding first notches 211. Such a setting can increase the circulation speed of the refrigerant in the distribution pipe 20, accelerate the distribution efficiency of the refrigerant, and at the same time, the refrigerant flows from the plurality of chambers to the manifold 10, and the second chamber 213 is simultaneously replenished in the manifold 10, effectively reducing the proportion of gaseous refrigerant in the manifold 10 and improving the heat exchange efficiency.

[0056] Specifically, when the distribution structure has a plurality of second partition plates 32, the plurality of first distribution holes 2121 are evenly spaced and distributed from the first end to the second end of the distribution pipe 20. For example, when the distribution structure has two second partition plates 32, the first chamber 212 is divided into three chambers, each chamber is provided with a corresponding first distribution hole group, and the first distribution hole groups on the three chambers are respectively arranged at the top, middle and bottom of the distribution pipe 20, and each first distribution hole group occupies one third of the length of the distribution pipe. Such an arrangement can ensure that the gaseous refrigerant is evenly distributed from the first end to the second end of the distribution pipe 20 when it flows out through the first distribution holes 2121.

[0057] Furthermore, the projections of the plurality of first distribution holes 2121 in the axial direction of the distribution pipe 20 are evenly spaced from the first end to the second end of the distribution pipe 20. This arrangement ensures that the gaseous refrigerant is evenly distributed from the first end to the second end of the distribution pipe 20 when it flows out through the first distribution holes 2121. At the same time, the second chamber 213 replenishes the refrigerant flowing from the plurality of chambers to the manifold 10, which is conducive to the even distribution of the liquid refrigerant.

[0058] The distribution structure may include a plurality of second partition plates 32 . In the third embodiment of the present application, only one second partition plate 32 is provided.

[0059] Specifically, the second partition plate 32 divides the first chamber 212 into two independent chambers, which are defined as a first sub-chamber 2122 and a second sub-chamber 2123, respectively. Two groups of first distribution hole groups are provided, and the two groups of first distribution hole groups are respectively provided in the first sub-chamber 2122 and the second sub-chamber 2123, and the first sub-chamber 2122 and the second sub-chamber 2123 are both connected to the inlet 22. There are two first notches 211 in the first chamber 212, and the first sub-chamber 2122 is provided corresponding to one of the first notches 211, and the second sub-chamber 2123 is provided corresponding to the other first notch 211, and the two first notches 211 are both provided at the end of the second end of the distribution pipe 20, and the first sub-chamber 2122 and the second sub-chamber 2123 are respectively connected to the second chamber 213 through the corresponding first notches 211. Such a configuration can improve the circulation speed of the refrigerant in the distribution pipe 20 and improve the heat exchange efficiency. At the same time, its structure is simple, and it is convenient to assemble the second partition plate 32.

[0060] Furthermore, one of the first distribution hole groups is arranged at the second end of the distribution pipe 20, and the other first distribution hole group is arranged at the first end of the distribution pipe 20, and the plurality of second distribution holes 2131 are arranged at intervals from the first end to the second end of the distribution pipe 20. Such an arrangement can prevent the refrigerant from entering the second chamber 213 from the inlet 22, and prevent the refrigerant from being completely discharged from the first chamber 212, so that the refrigerant can flow into the second chamber 213 after passing through the first chamber 212, and the gas-liquid two-phase refrigerant first flows from the first end and the second end of the distribution pipe 20 to the manifold 10, and the second chamber 213 can replenish the liquid refrigerant from the first end to the second end of the manifold 10 close to the distribution pipe 20, further balancing the flow of the refrigerant flowing out of the first end and the second end of the distribution pipe 20, and improving the uniformity of the refrigerant liquid separation.

[0061] The length of the first distribution hole group at the first end of the distribution pipe 20 is half the length of the distribution pipe 20, and the length of the first distribution hole group at the second end of the distribution pipe 20 is half the length of the distribution pipe 20. This arrangement enables the refrigerant to flow out evenly when passing through the distribution pipe 20, thereby ensuring the uniformity of liquid separation.

[0062] Specifically, since the refrigerant flow rate is small when it flows out of the first sub-chamber 2122 and the second sub-chamber 2123, in this embodiment, the second distribution holes 2131 are relatively sparse compared to the first distribution holes 2121. Such a configuration can reduce the processing steps of the distribution pipe 20.

[0063] Optionally, the staff can design the number of the first distribution holes 2121 and the second distribution holes 2131 according to demand.

[0064] like Fig.10 As shown, the fourth embodiment of the present application provides a distribution structure, which is different from the first embodiment in that the distribution structure further includes a third partition plate 33, which is arranged in the second chamber 213, and the third partition plate 33 is arranged to extend along the axial direction of the distribution pipe 20 to divide the second chamber 213 into a third sub-chamber 2132 and a fourth sub-chamber 2133. The second chamber 213 also has a second notch 214, which is arranged at the second end of the distribution pipe 20. The third sub-chamber 2132 and the fourth sub-chamber 2133 are connected to the first chamber 212 through the first notch 211 and the second notch 214. The second distribution hole 2131 is connected to the third sub-chamber 2132, and the fourth sub-chamber 2133 is provided with a fourth distribution hole so that the fourth sub-chamber 2133 is connected to the placement chamber 11. Such a configuration can increase the circulation speed of the refrigerant in the second chamber 213 and increase the heat exchange efficiency of the heat exchanger.

[0065] Among them, the staff can choose embodiment three or embodiment four according to needs.

[0066] Furthermore, the second chamber 213 also has a fifth sub-chamber 2134, which is arranged downstream of the third sub-chamber 2132 and the fourth sub-chamber 2133, one end of the third sub-chamber 2132 and one end of the fourth sub-chamber 2133 are both connected to the second notch 214, and the other end of the third sub-chamber 2132 and the other end of the fourth sub-chamber 2133 are both connected to the fifth sub-chamber 2134. Such an arrangement facilitates adjustment of the flow velocity at different positions in the second chamber 213, increases the disturbance of the refrigerant flowing to the manifold 10, is conducive to uniform refrigerant liquid separation, and has a simple structure and is easy to assemble. The staff can set it according to needs.

[0067] The cross section of the distribution pipe 20 may be a perfect circle.

[0068] like Fig.11 As shown, the fifth embodiment of the present application provides a distribution structure, which is different from the first embodiment in that the cross-section of the distribution pipe 20 is elliptical, and the flow areas of the first chamber 212 and the second chamber 213 are the same.

[0069] like Fig.12 As shown, the sixth embodiment of the present application provides a distribution structure, which is different from the first embodiment in that the cross-section of the distribution pipe 20 is elliptical, and the flow areas of the first chamber 212 and the second chamber 213 are different.

[0070] like Fig.13 As shown, the seventh embodiment of the present application provides a distribution structure, which is different from the first embodiment in that the cross section of the distribution pipe 20 is polygonal, and the flow areas of the first chamber 212 and the second chamber 213 are the same. In this way, the staff can set the structure of the distribution pipe 20 according to the needs, thereby improving the application range of the distribution pipe 20.

[0071] like Fig.14 As shown, the eighth embodiment of the present application provides a heat exchanger, which includes a plurality of flat tubes 100, a liquid inlet pipe 200, a liquid outlet pipe 300 and the distribution structure provided above, wherein the liquid inlet pipe 200 is connected to the inlet 22 of the distribution structure, and the distribution structure is provided with a plurality of plug holes 12 distributed at intervals along the axial direction of the manifold 10, and the plurality of flat tubes 100 are arranged one-to-one with the plurality of plug holes 12, one end of the flat tube 100 is plugged into the corresponding plug hole 12 and is connected to the placement cavity 11 of the distribution structure, and the other ends of the plurality of flat tubes 100 are all connected to the liquid outlet pipe 300. With such a configuration, the distribution pipe 20 can evenly distribute the refrigerant, thereby ensuring that the refrigerant is evenly distributed in the manifold 10, so that the flow rate of the refrigerant in the plurality of flat tubes 100 is the same, thereby ensuring the performance of the heat exchanger, avoiding uneven heat exchange of the heat exchanger, and improving the user experience. The heat exchanger further includes a liquid outlet header 400 , the other ends of the plurality of flat tubes 100 are all connected to the liquid outlet header 400 , and the liquid outlet header 400 is connected to the liquid outlet pipe 300 .

[0072] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0073] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0074] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0075] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0076] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0077] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A distribution structure, characterized in that: include: A collecting pipe (10), wherein the collecting pipe (10) has a placement cavity (11); A distribution tube (20) is arranged in the placement cavity (11), the distribution tube (20) has a receiving cavity (21) and an inlet (22), the distribution tube (20) has a first end and a second end arranged opposite to each other, the inlet (22) is arranged at the first end of the distribution tube (20), the receiving cavity (21) has a first notch (211), and the first notch (211) is arranged at the second end of the distribution tube (20); A first partition plate (31) is arranged in the accommodating chamber (21), and the first partition plate (31) is extended along the axial direction of the distribution tube (20) to divide the accommodating chamber (21) into a first chamber (212) and a second chamber (213) that are interconnected. The first chamber (212) is provided with a first distribution hole group, and the first distribution hole group has a plurality of first distribution holes (2121) arranged axially at intervals along the first chamber (212). The first chamber (212) is connected to the placement chamber (11) through the plurality of first distribution holes (2121). One end of the first chamber (212) is connected to the inlet (22), and the other end of the first chamber (212) is connected to the second chamber (213) through the first notch (211). The second chamber (213) is provided with a plurality of second distribution holes (2131) arranged axially at intervals, and the second chamber (213) is connected to the placement chamber (11) through the second distribution holes (2131).

2. The distribution structure according to claim 1, characterized in that: The plurality of first distribution holes (2121) and the plurality of second distribution holes (2131) are arranged in a one-to-one correspondence along the axial direction of the distribution pipe (20).

3. The distribution structure according to claim 1, characterized in that: The cross-sectional area of ​​the first chamber (212) is greater than the cross-sectional area of ​​the second chamber (213).

4. The distribution structure according to claim 1, characterized in that: The cross-sectional area of ​​the first chamber (212) is the same as the cross-sectional area of ​​the second chamber (213); a first protrusion is provided on a side of the first partition plate (31) close to the second chamber (213); and / or a second protrusion is provided on a side wall of the second chamber (213).

5. The distribution structure according to claim 1, characterized in that: The allocation structure also includes: At least one second partition plate (32) is arranged in the first chamber (212), and the second partition plate (32) is extended along the axial direction of the distribution tube (20) to divide the first chamber (212) into a plurality of independent chambers, each of which is correspondingly provided with the first distribution hole group, and the plurality of chambers are connected with the inlet (22). The first chamber (212) has a plurality of first notches (211), and the plurality of first notches (211) are arranged one-to-one with the plurality of chambers, and the plurality of chambers are respectively connected with the second chamber (213) through the corresponding first notches (211).

6. The distribution structure according to claim 5, characterized in that: The projections of the plurality of first distribution holes (2121) in the axial direction of the distribution pipe (20) are evenly spaced and distributed from the first end to the second end of the distribution pipe (20).

7. The distribution structure according to claim 5, characterized in that: The second partition plate (32) is provided with one, and the second partition plate (32) divides the first chamber (212) into two independent chambers, the two chambers are respectively defined as a first sub-chamber (2122) and a second sub-chamber (2123), the first distribution hole group is provided with two groups, the two groups of the first distribution hole groups are respectively arranged in the first sub-chamber (2122) and the second sub-chamber (2123), the first sub-chamber (2122) and the second sub-chamber (2123) are both connected to the inlet (22), and the first chamber ( The first sub-chamber (2122) has two first notches (211), the first sub-chamber (2122) is arranged corresponding to one of the first notches (211), and the second sub-chamber (2123) is arranged corresponding to the other first notch (211), and the two first notches (211) are both arranged at the end of the first chamber (212) close to the second end of the distribution pipe (20), and the first sub-chamber (2122) and the second sub-chamber (2123) are respectively connected to the second chamber (213) through the corresponding first notches (211).

8. The distribution structure according to claim 7, characterized in that: One of the first distribution hole groups is arranged at the second end of the distribution tube (20), and another of the first distribution hole groups is arranged at the first end of the distribution tube (20), and a plurality of the second distribution holes (2131) are arranged at intervals from the first end of the distribution tube (20) to the second end of the distribution tube (20).

9. The distribution structure according to claim 1, characterized in that: The allocation structure also includes: A third partition plate (33) is arranged in the second chamber (213), and the third partition plate (33) is extended along the axial direction of the distribution tube (20) to divide the second chamber (213) into a third sub-chamber (2132) and a fourth sub-chamber (2133). The second chamber (213) also has a second notch (214), and the second notch (214) is arranged at the second end of the distribution tube (20). The third sub-chamber (2132) and the fourth sub-chamber (2133) are connected to the first chamber (212) through the first notch (211) and the second notch (214).

10. The distribution structure according to claim 9, characterized in that: The second chamber (213) also has a fifth sub-chamber (2134), which is arranged downstream of the third sub-chamber (2132) and the fourth sub-chamber (2133), one end of the third sub-chamber (2132) and one end of the fourth sub-chamber (2133) are both connected to the second notch (214), and the other end of the third sub-chamber (2132) and the other end of the fourth sub-chamber (2133) are both connected to the fifth sub-chamber (2134).

11. A heat exchanger, characterized in that: The heat exchanger comprises a plurality of flat tubes (100), a liquid inlet pipe (200), a liquid outlet pipe (300) and a distribution structure according to any one of claims 1 to 10, wherein the liquid inlet pipe (200) is connected to an inlet (22) of the distribution structure, and the distribution structure is provided with a plurality of plug holes (12) distributed at intervals along the axial direction of the collecting pipe (10), and the plurality of flat tubes (100) are arranged in a one-to-one correspondence with the plurality of plug holes (12), one end of the flat tube (100) is plugged into the corresponding plug hole (12) and is connected to the placement cavity (11) of the distribution structure, and the other ends of the plurality of flat tubes (100) are all connected to the liquid outlet pipe (300).

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