Heat exchanger assembly, air conditioning system and air conditioner

Abstract

The utility model discloses a heat exchanger assembly, air conditioning system and air conditioner, heat exchanger assembly includes: heat exchanger body and shunt subassembly. Heat exchanger body has a plurality of heat exchange pipes, and a plurality of heat exchange pipes form at least one first flow path and at least one second flow path, and shunt subassembly includes body part and flow resistance part, and body part has first port, second port, first communicating hole and second communicating hole, and flow resistance part only allows refrigerant to flow from second port side to first communicating hole side, and the heat exchange pipe of first flow path connected with first communicating hole and the heat exchange pipe of second flow path connected with second communicating hole are located on the opposite side of heat exchanger body thickness direction or in different rows. According to the heat exchanger assembly of the utility model, when being the condenser, can make the flow direction of refrigerant in the heat exchange pipe along the thickness direction of heat exchanger body consistent, and the countercurrent arrangement of refrigerant and heat exchange airflow is facilitated, thereby being favorable for improving the heat exchange efficiency of heat exchanger assembly.

Description

Technical Field

[0001] This utility model relates to the field of air handling equipment technology, and in particular to a heat exchanger assembly, an air conditioning system, and an air conditioner. Background Technology

[0002] In related technologies, heat exchangers, as an essential component of air conditioning systems, serve as both evaporators and condensers. To improve the performance of air conditioning systems and adapt heat exchangers to different operating modes, existing heat exchanger structures and refrigerant flow paths within them are becoming increasingly complex. This complexity hinders heat exchanger placement and negatively impacts heat exchange efficiency. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a heat exchanger assembly that, when used as a condenser, allows the refrigerant to flow in the same direction along the thickness of the heat exchanger body within the heat exchange tubes. This facilitates the counter-current arrangement of the refrigerant and the heat exchange airflow, thereby improving the heat exchange efficiency of the heat exchanger assembly.

[0004] This utility model also proposes an air conditioning system, which includes the heat exchanger assembly described above.

[0005] This utility model also proposes an air conditioner, wherein the air conditioning system includes the air conditioning system described above.

[0006] The heat exchanger assembly according to an embodiment of the present invention includes: a heat exchanger body and a flow distribution assembly. The heat exchanger body has multiple heat exchange tubes, which form at least one first flow path and at least one second flow path. The flow distribution assembly includes a body portion and a flow-blocking component. The body portion has a first port, a second port, a first connecting hole, and a second connecting hole. The flow-blocking component is disposed on the body portion. Along the length direction of the body portion, the first port and the first connecting hole are located on the same side of the flow-blocking component, and the second port and the second connecting hole are located on the same side of the flow-blocking component. The first port and the second port are located on opposite sides of the flow-blocking component. The flow-blocking component only allows refrigerant to flow from the second port side to the first connecting hole side. The first connecting hole is connected to one end of at least one first flow path, and the second connecting hole is connected to one end of at least one second flow path. The heat exchange tubes are arranged in multiple rows along the thickness direction of the heat exchanger body. Both the first flow path and the second flow path include multiple rows of heat exchange tubes. The heat exchange tubes of the first flow path connected to the first connecting hole and the heat exchange tubes of the second flow path connected to the second connecting hole are located on opposite sides of the thickness direction of the heat exchanger body or in different rows.

[0007] According to the embodiments of the present invention, the heat exchanger assembly, by having a first connecting hole on the body connected to one end of at least one first flow path, and a second connecting hole on the body connected to one end of at least one second flow path, and by positioning the heat exchange tubes of the first flow path connected to the first connecting hole and the heat exchange tubes of the second flow path connected to the second connecting hole on opposite sides or in different rows along the thickness direction of the heat exchanger body, allows the refrigerant to flow in the heat exchange tubes in the same direction along the thickness direction of the heat exchanger body when the heat exchanger assembly functions as a condenser. This facilitates the setting of the position and orientation of the heat exchanger assembly and the control of the flow direction of the airflow exchanging heat with the heat exchanger assembly, thus enabling counter-current arrangement of the refrigerant and the heat exchange airflow. This maintains a large temperature difference between the refrigerant and the heat exchange airflow on the heat exchange tubes, thereby maximizing the heat exchange efficiency of the heat exchange tubes. This improves the heat exchange efficiency of the heat exchanger assembly, and when applied to an air conditioning system, it helps improve the performance and energy efficiency of the air conditioning system.

[0008] According to some embodiments of the present invention, the heat exchange tubes of the first flow path connected to the first connecting hole are located in a row on the leeward side of the heat exchanger body, and the heat exchange tubes of the second flow path connected to the second connecting hole are located in a row on the windward side of the heat exchanger body.

[0009] In some embodiments of this utility model, the heat exchange tubes are arranged in multiple rows along the thickness direction of the heat exchanger body. The first flow path includes a row of windward heat exchange tubes located on the windward side of the heat exchanger body and a row of leeward heat exchange tubes located on the leeward side of the heat exchanger body. When the heat exchanger assembly is used as a condenser and as an evaporator, the refrigerant flowing into the first flow path first flows through the leeward heat exchange tubes and then through the windward heat exchange tubes.

[0010] And / or, the heat exchange tubes are arranged in multiple rows along the thickness direction of the heat exchanger body, and the second flow path includes a row of windward heat exchange tubes located on the windward side of the heat exchanger body and a row of leeward heat exchange tubes located on the leeward side of the heat exchanger body. When the heat exchanger assembly is used as an evaporator, the refrigerant flowing into the second flow path first flows through the windward heat exchange tubes and then through the leeward heat exchange tubes. When the heat exchanger assembly is used as a condenser, the refrigerant flowing into the second flow path first flows through the leeward heat exchange tubes and then through the windward heat exchange tubes.

[0011] According to some embodiments of the present invention, the main body includes a manifold, which includes a first manifold and a second manifold. The first port and the first connecting hole are disposed on the first manifold, and the second port and the second connecting hole are disposed on the second manifold. The first manifold and the second manifold are integral components, and the flow-blocking component is disposed inside the first manifold or the second manifold; or, the first manifold and the second manifold are separate components, and the flow-blocking component is connected between the first manifold and the second manifold.

[0012] In some embodiments of this utility model, the inner diameter of the first manifold is less than or equal to the inner diameter of the second manifold.

[0013] In some embodiments of this utility model, the end of the first manifold facing away from the flow-blocking component is open to form the first port; or the first port is located on the peripheral wall of the first manifold; or the first manifold includes a manifold body and a first tee pipe, the first end of the first tee pipe is connected to the flow-blocking component, the second end of the first tee pipe is connected to the manifold body, the first port is located at the third end of the first tee pipe, and the manifold body is provided with the first connecting hole; and / or the end of the second manifold facing away from the flow-blocking component is open to form the second port; or the second port is located on the peripheral wall of the second manifold.

[0014] According to some embodiments of the present invention, the first connecting hole is one or a plurality of holes spaced apart along the length direction of the first manifold; and / or, the second connecting hole is one or a plurality of holes spaced apart along the length direction of the second manifold.

[0015] According to some embodiments of the present invention, the heat exchanger assembly further includes a first branch pipe, at least one of which is connected to the first connecting hole; and / or a second branch pipe, at least one of which is connected to the second connecting hole.

[0016] In some embodiments of this utility model, the inner diameter of the second branch pipe is less than or equal to the inner diameter of the first branch pipe; and / or the area of ​​the second connecting hole is less than the area of ​​the first connecting hole.

[0017] In some embodiments of this utility model, the main body includes a connecting pipe and a distributor, the flow-blocking component is disposed on the connecting pipe, the second port and the second connecting hole are connected to the connecting pipe, at least one of the second port and the second connecting hole is connected to one end of the connecting pipe, the distributor has a main interface and a plurality of distributing holes, the main interface is connected to the other end of the connecting pipe, and at least some of the distributing holes are the first connecting holes.

[0018] In some embodiments of this utility model, there are multiple first connecting holes, each of which is connected to a first branch pipe, and the first port is located on the connecting pipe between the distributor and the flow-blocking component.

[0019] In some embodiments of this utility model, the number of the first connecting holes is multiple, the number of the distribution holes is N, N-1 of the distribution holes are respectively connected to a first branch pipe, and the remaining distribution hole forms the first port.

[0020] In some embodiments of this utility model, along the length of the connecting pipe, the distance between the main interface and the outlet end of the flow-blocking component is 15mm-500mm; and / or along the length of the connecting pipe, the distance between the second connecting hole and the inlet end of the flow-blocking component is 15mm-100mm; and / or along the length of the connecting pipe, the distance between the second connecting hole and the inlet end of the flow-blocking component is less than the distance between the main interface and the outlet end of the flow-blocking component.

[0021] According to some embodiments of this utility model, the flow-blocking component is a one-way valve, a solenoid valve, or a baffle.

[0022] According to some embodiments of the present invention, the heat exchanger assembly further includes a flow collector assembly, which is disposed on one side of the heat exchanger body and is connected to a plurality of flow paths respectively, and the flow collector assembly has a third port.

[0023] In some embodiments of this utility model, the flow collection assembly and the flow splitting assembly are located on the same side of the length direction of the heat exchanger body.

[0024] In some embodiments of this utility model, the current collection assembly includes a main pipe and branch pipes, the main pipe having a third port; one end of the branch pipe is connected to the main pipe, the inner diameter of the main pipe is greater than or equal to the inner diameter of the branch pipe, there are multiple branch pipes, and the ends of the multiple branch pipes opposite to the main pipe are respectively connected to the end of the first flow path away from the first connecting hole and the end of the second flow path away from the second connecting hole.

[0025] In some embodiments of this utility model, when the heat exchanger assembly functions as an evaporator, refrigerant flows into the heat exchanger assembly from the second port, and then flows into the heat exchange tube of the heat exchanger assembly from the first and second connecting holes before flowing out of the heat exchanger assembly from the third port. The flow-blocking component is open, and the first port is closed. When the heat exchanger assembly functions as a condenser, refrigerant flows into the heat exchanger assembly from the first port, and then flows into the heat exchange tube of the heat exchanger assembly from the first connecting hole before flowing out of the heat exchanger assembly from the second connecting hole and the second port in sequence. Both the flow-blocking component and the third port are closed.

[0026] In some embodiments of this utility model, there are multiple first connecting holes. When the heat exchanger assembly is used as an evaporator and when the heat exchanger assembly is used as a condenser, the multiple first connecting holes are used to distribute the refrigerant; and / or, the multiple first connecting holes are located above or diagonally above the flow-blocking component, and the multiple first connecting holes face horizontally, upward or diagonally upward.

[0027] In some embodiments of this utility model, the first flow path is located above the second flow path; and / or, the air volume or average wind speed flowing through the first flow path is greater than the air volume or average wind speed flowing through the second flow path.

[0028] An air conditioning system according to an embodiment of the present invention includes: a compressor, an indoor heat exchanger, the aforementioned heat exchanger assembly, and a reversing assembly. The compressor has an exhaust port and a return port. One end of the indoor heat exchanger is connected to a second port. The reversing assembly has a first port, a second port, a third port, a fourth port, and a fifth port. The first port is connected to the exhaust port, the third port is connected to the return port, the second port is connected to the other end of the indoor heat exchanger, the fourth port connects the end of the first flow path opposite to the first connecting hole and the end of the second flow path opposite to the second connecting hole, and the fifth port is connected to the first port. The reversing assembly has a first switching state and a second switching state. When the reversing assembly is in the first switching state, the first port is connected to the fifth port, the second port is connected to the third port, and the fourth port is closed. When the reversing assembly is in the second switching state, the first port is connected to the second port, the third port is connected to the fourth port, and the fifth port is closed.

[0029] According to the air conditioning system of this utility model embodiment, by connecting a first connecting hole on the main body to one end of at least one first flow path, and a second connecting hole on the main body to one end of at least one second flow path, and by positioning the heat exchange tubes of the first flow path connected to the first connecting hole and the heat exchange tubes of the second flow path connected to the second connecting hole on opposite sides or in different rows along the thickness direction of the heat exchanger body, when the heat exchanger assembly acts as a condenser, the refrigerant can flow in the same direction along the thickness direction of the heat exchanger body within the heat exchange tubes. This facilitates setting the position and orientation of the heat exchanger assembly and controlling the flow direction of the airflow exchanging heat with the heat exchanger assembly, thus enabling counter-current arrangement of the refrigerant and the heat exchange airflow. This maintains a large temperature difference between the refrigerant and the heat exchange airflow on the heat exchange tubes, thereby maximizing the heat exchange efficiency of the heat exchange tubes. This is beneficial for improving the heat exchange efficiency of the heat exchanger assembly, thereby contributing to improving the cooling or heating performance of the air conditioning system and increasing energy efficiency.

[0030] An air conditioner according to an embodiment of the present invention includes: the air conditioning system described above.

[0031] According to an embodiment of the present invention, an air conditioner is designed such that a first connecting hole on the main body is connected to one end of at least one first flow path, and a second connecting hole on the main body is connected to one end of at least one second flow path. Furthermore, the heat exchange tubes of the first flow path connected to the first connecting hole and the second flow path connected to the second connecting hole are located on opposite sides or in different rows along the thickness direction of the heat exchanger body. When the heat exchanger assembly functions as a condenser, the refrigerant can flow in the heat exchange tubes in the same direction along the thickness direction of the heat exchanger body. This facilitates setting the position and orientation of the heat exchanger assembly and controlling the flow direction of the airflow exchanging heat with the heat exchanger assembly, thus enabling counter-current arrangement of the refrigerant and the heat exchange airflow. This maintains a large temperature difference between the refrigerant and the heat exchange airflow on the heat exchange tubes, thereby maximizing the heat exchange efficiency of the heat exchange tubes. This improves the heat exchange efficiency of the heat exchanger assembly, thereby contributing to improved cooling or heating performance of the air conditioning system and the air conditioner, and enhancing energy efficiency.

[0032] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0033] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0034] Figure 1 This is a schematic diagram of the structure of the diversion component according to an embodiment of the present utility model, wherein the first current collector and the second current collector are integral parts;

[0035] Figure 2This is a schematic diagram of the structure of the diversion assembly according to an embodiment of the present utility model, wherein the first current collector and the second current collector are separate components;

[0036] Figure 3 This is a flow path diagram of a heat exchanger assembly according to an embodiment of the present utility model;

[0037] Figure 4 This is a structural schematic diagram of a heat exchanger assembly according to an embodiment of the present utility model from another perspective;

[0038] Figure 5 This is a structural schematic diagram of an air conditioning system according to an embodiment of the present utility model, wherein the air conditioning system is in cooling mode;

[0039] Figure 6 This is a structural schematic diagram of an air conditioning system according to an embodiment of the present utility model, wherein the air conditioning system is in heating mode;

[0040] Figure 7 This is a schematic diagram of the structure of the five-way valve of the reversing component of the air conditioning system according to an embodiment of the present utility model;

[0041] Figure 8 This is a perspective view of the manifold according to an embodiment of the present utility model;

[0042] Figure 9 This is a top view of the manifold according to an embodiment of the present utility model;

[0043] Figure 10 This is a schematic diagram of a shunt assembly according to another embodiment of the present invention, which includes a shunt unit;

[0044] Figure 11 yes Figure 10 A partial exploded view;

[0045] Figure 12 This is a schematic diagram of a flow divider assembly according to another embodiment of the present invention, which includes an intake pipe and a flow divider.

[0046] Figure label:

[0047] 100. Distributor components;

[0048] 1. Body; 101. Connecting pipe; 11. First port; 12. Second port; 13. First connecting hole; 14. Second connecting hole; 102. Manifold; 15. First manifold; 151. Manifold body; 152. First tee pipe; 16. Second manifold;

[0049] 2. Flow-blocking components;

[0050] 31. First branch pipe; 32. Second branch pipe; 33. Inlet pipe; 34. Extension pipe;

[0051] 200. Heat exchanger assembly;

[0052] 4. Heat exchanger body; 41. Heat exchange tube; 42. First flow path; 43. Second flow path; 44. Leeward side heat exchange tube; 45. Windward side heat exchange tube;

[0053] 5. Current collector assembly; 51. Third port; 52. Main pipe; 53. Branch pipe; 531. Third branch pipe; 532. Fourth branch pipe;

[0054] 71. Distributor; 711. Main interface; 712. Distribution hole;

[0055] 300. Air conditioning system;

[0056] 61. Compressor; 611. Exhaust port; 612. Return port; 62. Indoor heat exchanger; 63. Reversing assembly; 631. First port; 632. Second port; 633. Third port; 634. Fourth port; 635. Fifth port; 636. Five-way valve; 637. Pilot valve; 64. Throttling device; 601. First valve body; 602. First connecting member; 603. Moving member; 604. Connecting member; 605. Connecting shaft; 606. First partition; 607. Second partition; 608. Connecting part; 609. Stop part; 651. Sixth port; 652. Seventh port; 653. Connecting cavity; 654. Through port. Detailed Implementation

[0057] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0058] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0059] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0060] The heat exchanger assembly 200 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0061] like Figure 3 and Figure 4 As shown, the heat exchanger assembly 200 according to an embodiment of the present invention includes a heat exchanger body 4 and a flow splitting assembly 100.

[0062] Specifically, such as Figure 1 and Figure 2 As shown, combined with Figure 3 and Figure 4 The heat exchanger body 4 has a plurality of heat exchange tubes 41, which form at least one first flow path 42 and at least one second flow path 43. The flow distribution assembly 100 includes a body portion 1 and a flow-blocking component 2. The body portion 1 has a first port 11, a second port 12, a first connecting hole 13, and a second connecting hole 14. The flow-blocking component 2 is disposed on the body portion 1. Along the length direction of the body portion 1, the first port 11 and the first connecting hole 13 are located on the same side of the flow-blocking component 2, and the second port 12 and the second connecting hole 14 are located on the same side of the flow-blocking component 2. The first port 11 and the second port 12 are located on opposite sides of the flow-blocking component 2. The flow-blocking component 2 only allows the refrigerant to flow from the second port 12 side to the first connecting hole 13 side.

[0063] The heat exchange tube 41 and the main body 1 serve as channels for the refrigerant flow. In a specific example, such as... Figure 1 and Figure 2 As shown, the first connecting hole 13 and the second connecting hole 14 are both provided on the peripheral wall of the body part 1 and are spaced apart along the length direction of the body part 1. The first port 11 and the second port 12 are respectively provided at both ends of the length direction of the body part 1, or the first port 11 and the second port 12 are both provided on the peripheral wall of the body part 1 and located on both sides of the flow blocking member 2.

[0064] The flow-blocking component 2 is unidirectional. It only opens when the pressure on the side of the flow-blocking component 2 closest to the second port 12 is greater than the pressure on the side of the flow-blocking component 2 closest to the first port 11, allowing the refrigerant to flow from the second port 12 to the first port 11. When the refrigerant enters the main body 1 from the second port 12, the flow-blocking component 2 opens, and part of the refrigerant flows from the second port 12 to the second connecting hole 14 and enters the heat exchange tube 41, while part of the refrigerant flows through the flow-blocking component 2 to the first connecting hole 13 and enters the heat exchange tube 41.

[0065] When the refrigerant enters the main body 1 from the first port 11, the flow-blocking component 2 is not conductive, and the refrigerant cannot flow from the end of the flow-blocking component 2 near the first port 11 to the end of the flow-blocking component 2 near the second port 12. The refrigerant can only flow from the first port 11 to the first connecting hole 13, then enter the heat exchange tube 41, and then return to the main body 1 from the heat exchange tube 41 through the second connecting hole 14, and finally flow out of the heat exchanger assembly 200 from the second port 12.

[0066] This application adds a flow-blocking component 2 to the flow-diverting assembly 100. The flow-blocking component 2 automatically opens, closes, or cuts off the flow based on the pressure difference of the refrigerant on both sides, thereby enabling automatic flow guidance of the refrigerant and changing its flow direction. When the heat exchanger assembly 200 is used in the air conditioning system 300, it can automatically switch the refrigerant flow path within the heat exchanger assembly 200 in different modes of the air conditioning system 300, thereby improving the heat exchange efficiency of the heat exchanger assembly 200, enhancing the cooling or heating performance of the air conditioning system 300, and improving energy efficiency. Furthermore, it eliminates the need for other control structures, is less susceptible to power failures, and features a simple, easy-to-implement, and low-cost structure.

[0067] Furthermore, the first connecting hole 13 is connected to one end of at least one first flow path 42, and the second connecting hole 14 is connected to one end of at least one second flow path 43. The heat exchange tubes 41 are arranged in multiple rows along the thickness direction of the heat exchanger body 4. Both the first flow path 42 and the second flow path 43 include multiple rows of heat exchange tubes 41. The heat exchange tubes 41 of the first flow path 42 connected to the first connecting hole 13 and the heat exchange tubes 41 of the second flow path 43 connected to the second connecting hole 14 are located on opposite sides of the thickness direction of the heat exchanger body 4 or in different rows.

[0068] refer to Figure 3 As shown, multiple heat exchange tubes 41 form three first flow paths 42 and one second flow path 43. Of course, the number of first flow paths 42 formed by multiple heat exchange tubes 41 can also be one, two, four, five or six, etc., and the number of second flow paths 43 formed by multiple heat exchange tubes 41 can also be two, three, four, five or six, etc.

[0069] When the heat exchanger assembly 200 functions as a condenser, the refrigerant enters the body 1 from the first port 11. The flow-blocking component 2 is not open, so the refrigerant can only enter the heat exchange tube 41 through the first connecting hole 13, then return to the body 1 from the heat exchange tube 41 through the second connecting hole 14, and finally flow out of the heat exchanger assembly 200 from the second port 12. The heat exchange tube 41 of the first flow path 42 connected to the first connecting hole 13 and the heat exchange tube 41 of the second flow path 43 connected to the second connecting hole 14 are located on opposite sides of the thickness direction of the heat exchanger body 4. This can be understood as connecting the first connecting hole 13 and the second connecting hole 14 to both sides of the heat exchanger body 4 along the thickness direction of the body 4.

[0070] For example, refer to Figure 3 As shown, assuming the two sides of the heat exchanger body 4 in the thickness direction are the first side and the second side, the heat exchange tube 41 on the first flow path 42 near the first connecting hole 13 is located on the first side in the thickness direction of the heat exchanger body 4, and the heat exchange tube 41 on the second flow path 43 near the second connecting hole 14 is located on the second side in the thickness direction of the heat exchanger body 4. The refrigerant in the body part 1 enters the heat exchange tube 41 on the first side of the first flow path 42 through the first connecting hole 13, and flows from the first side to the second side. It then flows into the heat exchange tube 41 on the first side of the second flow path 43 through components such as the manifold 5. The refrigerant flows from the first side to the second side in the second flow path 43, and flows out of the heat exchanger body 4 through the second connecting hole 14 from the heat exchange tube 41 on the second side of the second flow path 43 to enter the body part 1.

[0071] Therefore, when the heat exchanger assembly 200 functions as a condenser, the refrigerant flows from the first side to the second side within the heat exchanger body 4 along its thickness direction. This facilitates the setting of the position and orientation of the heat exchanger assembly 200 and the control of the flow direction of the airflow exchanging heat with the heat exchanger assembly 200, ensuring that the flow direction of the airflow exchanging heat with the heat exchanger assembly 200 is opposite to the flow direction of the refrigerant within the heat exchanger body 4. This facilitates a counter-flow arrangement of the refrigerant and the heat exchange airflow. This counter-flow arrangement allows the refrigerant and the heat exchange airflow to maintain a large temperature difference on the heat exchange tube 41, thereby maximizing heat exchange efficiency. This effectively improves the heat exchange efficiency of the heat exchanger assembly 200. When the heat exchanger assembly 200 is applied to the air conditioning system 300, it can improve the performance and energy efficiency of the air conditioning system 300.

[0072] According to the embodiment of the present invention, the heat exchanger assembly 200 is configured such that a first connecting hole 13 on the body portion 1 is connected to one end of at least one first flow path 42, and a second connecting hole 14 on the body portion 1 is connected to one end of at least one second flow path 43. Furthermore, the heat exchange tubes 41 of the first flow path 42 connected to the first connecting hole 13 and the heat exchange tubes 41 of the second flow path 43 connected to the second connecting hole 14 are located on opposite sides or in different rows along the thickness direction of the heat exchanger body 4. When the heat exchanger assembly 200 functions as a condenser, the refrigerant can flow in the heat exchange tubes 41 in the same direction along the thickness direction of the heat exchanger body 4. This facilitates setting the position and orientation of the heat exchanger assembly 200 and controlling the flow direction of the airflow exchanging heat with the heat exchanger assembly 200, thus enabling counter-current arrangement of the refrigerant and the heat exchange airflow. This maintains a large temperature difference between the refrigerant and the heat exchange airflow on the heat exchange tubes 41, thereby maximizing the heat exchange efficiency of the heat exchange tubes 41. It is beneficial to improve the heat exchange efficiency of the heat exchanger assembly 200. When the heat exchanger assembly 200 is applied to the air conditioning system 300, it helps to improve the performance and energy efficiency of the air conditioning system 300.

[0073] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the heat exchange tubes 41 of the first flow path 42 connected to the first connecting hole 13 are located in a row on the leeward side of the heat exchanger body 4, and the heat exchange tubes 41 of the second flow path 43 connected to the second connecting hole 14 are located in a row on the windward side of the heat exchanger body 4.

[0074] It is understandable that the refrigerant in the main body 1 enters the heat exchange tube 41 located on the leeward side of the first flow path 42 through the first connecting hole 13, and then flows out of the heat exchanger body 4 through the second connecting hole 14 from the heat exchange tube 41 located on the windward side of the second flow path 43 to enter the main body 1.

[0075] In this way, when the heat exchanger assembly 200 functions as a condenser, the refrigerant can be ensured to flow from the leeward side to the windward side along the thickness direction of the heat exchanger body 4, thus achieving a counter-flow arrangement between the refrigerant and the heat exchange airflow. This counter-flow arrangement allows the refrigerant and the heat exchange airflow to maintain a large temperature difference on the heat exchange tube 41, thereby maximizing heat exchange efficiency. This effectively improves the heat exchange efficiency of the heat exchanger assembly 200, and when the heat exchanger assembly 200 is applied to the air conditioning system 300, it can improve the performance and energy efficiency of the air conditioning system 300.

[0076] In some embodiments of this utility model, such as Figure 3As shown, the heat exchange tubes 41 are arranged in multiple rows along the thickness direction of the heat exchanger body 4. The first flow path 42 includes a row of windward heat exchange tubes 45 located on the windward side of the heat exchanger body 4 and a row of leeward heat exchange tubes 44 located on the leeward side of the heat exchanger body 4. When the heat exchanger assembly 200 is used as a condenser and as an evaporator, the refrigerant flowing into the first flow path 42 first flows through the leeward heat exchange tubes 44 and then flows through the windward heat exchange tubes 45.

[0077] Understandably, the refrigerant in the main body 1 enters the leeward side heat exchange tube 44 of the first flow path 42 through the first connecting hole 13, and flows from the leeward side heat exchange tube 44 to the windward side heat exchange tube 45. This ensures that the refrigerant in the first flow path 42 flows from the leeward side to the windward side along the thickness direction of the heat exchanger body 4, thus achieving a counter-current arrangement of the refrigerant and the heat exchange airflow. This maintains a large temperature difference between the refrigerant and the heat exchange airflow on the heat exchange tube 41, thereby maximizing the heat exchange efficiency. This can effectively improve the heat exchange efficiency of the heat exchanger assembly 200. When the heat exchanger assembly 200 is applied to the air conditioning system 300, it can improve the performance and energy efficiency of the air conditioning system 300.

[0078] In some embodiments of this utility model, such as Figure 3 As shown, the heat exchange tubes 41 are arranged in multiple rows along the thickness direction of the heat exchanger body 4. The second flow path 43 includes a row of windward heat exchange tubes 45 located on the windward side of the heat exchanger body 4 and a row of leeward heat exchange tubes 44 located on the leeward side of the heat exchanger body 4. When the heat exchanger assembly 200 is used as an evaporator, the refrigerant flowing into the second flow path 43 first flows through the windward heat exchange tubes 45 and then flows through the leeward heat exchange tubes 44. When the heat exchanger assembly 200 is used as a condenser, the refrigerant flowing into the second flow path 43 first flows through the leeward heat exchange tubes 44 and then flows through the windward heat exchange tubes 45. The refrigerant flowing out of the first flow path 42 flows into the leeward side heat exchange tube 44 of the second flow path 43. The refrigerant flows from the leeward side heat exchange tube 44 to the windward side heat exchange tube 45 in the second flow path 43, and flows out of the heat exchanger body 4 through the second connecting hole 14 from the windward side heat exchange tube 45 of the second flow path 43 to enter the body part 1.

[0079] This ensures that when the heat exchanger assembly 200 functions as a condenser, the refrigerant in the second flow path 43 flows from the leeward side to the windward side along the thickness direction of the heat exchanger body 4, achieving a counter-current arrangement between the refrigerant and the heat exchange airflow. This maintains a large temperature difference between the refrigerant and the heat exchange airflow on the heat exchange tube 41, thereby maximizing heat exchange efficiency. This effectively improves the heat exchange efficiency of the heat exchanger assembly 200, and when applied to the air conditioning system 300, it enhances the performance and energy efficiency of the air conditioning system 300.

[0080] In some embodiments, the refrigerant in the body 1 enters the leeward heat exchange tube 44 of the first flow path 42 through the first connecting hole 13, and flows from the leeward heat exchange tube 44 to the windward heat exchange tube 45. Then, the refrigerant flows from the first flow path 42 into the leeward heat exchange tube 44 of the second flow path 43 through components such as the manifold 5. The refrigerant flows from the leeward heat exchange tube 44 to the windward heat exchange tube 45 in the second flow path 43, and flows out of the heat exchanger body 4 through the second connecting hole 14 from the windward heat exchange tube 45 of the second flow path 43 to enter the body 1.

[0081] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the main body 1 includes a manifold 102, which includes a first manifold 15 and a second manifold 16. A first port 11 and a first connecting hole 13 are provided on the first manifold 15, and a second port 12 and a second connecting hole 14 are provided on the second manifold 16. The first manifold 15 and the second manifold 16 are integral parts, and a flow-blocking component 2 is provided inside the first manifold 15 or the second manifold 16. Further, the manifold 102 is a flute-shaped pipe, which is vertically or inclined, and the multiple first connecting holes 13 face the horizontal direction, thereby facilitating the distribution of refrigerant through the manifold 102 to the multiple first connecting holes 13.

[0082] The first manifold 15 and the second manifold 16 are integrally machined. During the machining process, the flow-blocking component 2 can be directly fixed inside the first manifold 15 or the second manifold 16 without the need for alignment and connection of multiple pipe sections. This simplifies the assembly process of the flow divider assembly 100, reduces the difficulty of disassembly and assembly of the flow divider assembly 100, improves the assembly efficiency and maintenance efficiency of the flow divider assembly 100, and also reduces potential leakage points, thereby reducing the risk of leakage of the flow divider assembly 100.

[0083] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the main body 1 includes a manifold 102, which includes a first manifold 15 and a second manifold 16. A first port 11 and a first connecting hole 13 are provided on the first manifold 15, and a second port 12 and a second connecting hole 14 are provided on the second manifold 16. The first manifold 15 and the second manifold 16 are separate components, and the flow-blocking component 2 is connected between the first manifold 15 and the second manifold 16.

[0084] The first manifold 15 and the second manifold 16 are manufactured separately. The first manifold 15 and the second manifold 16 are arranged along the length of the flow divider assembly 100 and connected to each other. The flow-blocking component 2 is connected between the first manifold 15 and the second manifold 16. This allows the first manifold 15 and the second manifold 16 to be manufactured separately, reducing manufacturing difficulty and improving production efficiency. When assembling the flow divider assembly 100, the first manifold 15, the flow-blocking component 2, and the second manifold 16 are connected sequentially, facilitating assembly. Furthermore, if the first manifold 15, the flow-blocking component 2, or the second manifold 16 is damaged or needs replacement, only the corresponding component needs to be replaced, rather than the entire flow divider assembly 100, thus reducing maintenance costs.

[0085] In some embodiments of this utility model, the inner diameter of the first manifold 15 is less than or equal to the inner diameter of the second manifold 16. When the refrigerant enters the second manifold 16 from the second port 12, the flow-blocking component 2 is activated, and part of the refrigerant flows from the second port 12 to the second connecting hole 14, while another part of the refrigerant flows from the second manifold 16 through the flow-blocking component 2 into the first manifold 15.

[0086] By increasing the inner diameter of the second manifold 16, the initial flow velocity of the refrigerant entering the distribution assembly 100 can be reduced, decreasing the dynamic head while maintaining a higher static head. As some refrigerant flows upward, the static pressure gradually decreases, allowing the inner diameter of the first manifold 15 to be smaller. This increases the refrigerant flow velocity and dynamic head, enabling more refrigerant to pass through the flow-blocking component 2 and enter the first manifold 15. This improves the refrigerant flow distribution within the distribution assembly 100, achieving a better distribution effect and ensuring more even distribution of refrigerant to the first connecting hole 13 and the second connecting hole 14. When the distribution assembly 100 is applied to the heat exchanger assembly 200, it can improve the heat exchange efficiency and energy efficiency of the heat exchanger assembly 200.

[0087] Furthermore, making the inner diameter of the first manifold 15 equal to the inner diameter of the second manifold 16 can effectively reduce the difficulty of production and processing, which is conducive to improving the production efficiency of the diverter assembly 100 and reducing costs.

[0088] In some embodiments, the body portion 1 is welded to the flow-blocking component 2, which ensures the reliability and stability of the connection between the body portion 1 and the flow-blocking component 2, reduces the impact of loose connection on the flow distribution effect, extends the service life of the flow distribution assembly 100, and ensures the normal operation of the heat exchanger assembly 200 when the flow distribution assembly 100 is applied to the heat exchanger assembly 200. Furthermore, since the welded connection is stable and reliable, the connection cost and maintenance cost between the body portion 1 and the flow-blocking component 2 can be relatively reduced. For example, when the body portion 1 includes a first manifold 15 and a second manifold 16 that are interconnected and separately processed, the flow-blocking component 2 can be welded to the first manifold 15 and the second manifold 16 respectively.

[0089] In some embodiments, the body portion 1 and the flow-blocking component 2 are interference-fitted. The body portion 1 has a main flow channel, and the actual size of the flow-blocking component 2 is slightly larger than the actual size of the main flow channel. During assembly, an external force is applied to achieve a tight connection between the body portion 1 and the flow-blocking component 2. The interference fit between the body portion 1 and the flow-blocking component 2 can generate huge contact pressure through the elastic deformation between the materials, thereby achieving a high-strength connection between the body portion 1 and the flow-blocking component 2. No additional fasteners are required, which simplifies the structure and reduces costs.

[0090] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the end of the first manifold 15 facing away from the flow-blocking component 2 is open to form a first port 11. Setting the first port 11 at one end of the length direction of the first manifold 15 has a simple structure, is easy to process and manufacture, and is conducive to improving production efficiency and reducing costs. Moreover, the first port 11 is located at the end of the length direction of the first manifold 15, which also facilitates installation and assembly, thereby improving assembly efficiency.

[0091] In some embodiments of this utility model, the first port 11 is located on the peripheral wall of the first manifold 15. The refrigerant enters from the first port 11 located on the peripheral wall of the first manifold 15, which can form strong vortices, secondary flows and turbulence in the first manifold 15, making the refrigerant temperature more uniform and helping to improve the convective heat transfer coefficient.

[0092] In some embodiments of this utility model, such as Figure 10 and Figure 11As shown, the first manifold 15 includes a manifold body 151 and a first tee pipe 152. The first end of the first tee pipe 152 is connected to the flow-blocking component 2, and the second end of the first tee pipe 152 is connected to the manifold body 151. The first port 11 is located at the third end of the first tee pipe 152, and the manifold body 151 is provided with a first connecting hole 13. Thus, this arrangement allows the first port 11 to be positioned at different locations on the body 1, thereby improving versatility. Simultaneously, when the medium enters the body 1 from the first port 11, the flow-blocking component 2 is not conductive, and the medium cannot flow from the end of the flow-blocking component 2 near the first port 11 to the end of the flow-blocking component 2 near the second port 12; the medium can only flow from the first port 11 to the first connecting hole 13.

[0093] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the end of the second manifold 16 facing away from the flow-blocking component 2 is open to form a second port 12. Setting the second port 12 at one end of the second manifold 16 along its length is simple in structure and easy to manufacture, which helps to improve production efficiency and reduce costs. Moreover, the second port 12 is located at the end of the second manifold 16 along its length, which also facilitates installation and assembly, thereby improving assembly efficiency.

[0094] In some embodiments of this utility model, the second port 12 is located on the peripheral wall of the second manifold 16. The refrigerant enters from the second port 12 located on the peripheral wall of the second manifold 16, which can form strong vortices, secondary flows and turbulence within the main body 1, making the refrigerant temperature more uniform and improving the convective heat transfer coefficient.

[0095] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the first connecting hole 13 can be one or multiple holes spaced apart along the length of the first manifold 15. Providing a single first connecting hole 13 reduces the processing difficulty of the distribution assembly 100, thereby improving its production efficiency and reducing costs. Providing multiple first connecting holes 13 on the first manifold 15 allows refrigerant entering the first manifold 15 to flow out through these holes. When the distribution assembly 100 is applied to the heat exchanger assembly 200 and the air conditioning system 300, the refrigerant enters multiple heat exchange tubes 41 in the heat exchanger assembly 200 through the multiple first connecting holes 13, forming multiple flow channels. This improves the heat exchange efficiency of the heat exchanger assembly 200, enhances the cooling or heating performance of the air conditioning system 300, and increases energy efficiency.

[0096] refer to Figure 1 and Figure 2 As shown, there are two first connecting holes 13. Of course, there can also be three, four, five or six first connecting holes 13, etc.

[0097] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the second connecting hole 14 can be one or multiple holes spaced apart along the length of the second manifold 16. Providing a single second connecting hole 14 reduces the processing difficulty of the distribution assembly 100, thereby improving its production efficiency and reducing costs. Multiple second connecting holes 14 on the second manifold 16 allow refrigerant to flow into or out of the manifold 16. When the distribution assembly 100 is applied to the heat exchanger assembly 200 and the air conditioning system 300, the multiple second connecting holes 14 connect with multiple heat exchange tubes 41 in the heat exchanger assembly 200. Refrigerant can enter the multiple heat exchange tubes 41 in the heat exchanger assembly 200 through the multiple second connecting holes 14, or enter the distribution assembly 100 from the heat exchanger assembly 200 through the multiple second connecting holes 14, forming multiple flow channels. This improves the heat exchange efficiency of the heat exchanger assembly 200, enhances the cooling or heating performance of the air conditioning system 300, and improves energy efficiency.

[0098] Specifically, the second connecting hole 14 can be one, two, three, four, five, or six, etc.

[0099] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the heat exchanger assembly 200 also includes a first branch pipe 31, and at least one first branch pipe 31 is connected to the first connecting hole 13. The first branch pipe 31 is connected to the main body 1 and communicates with the first connecting hole 13. The first branch pipe 31 can be used to indirectly connect the main body 1 and the heat exchange tube 41 of the heat exchanger assembly 200, which can relatively reduce the difficulty of connecting the flow distribution assembly 100 and the heat exchange tube 41, reduce the probability of refrigerant leakage, and ensure the normal operation of the heat exchanger assembly 200.

[0100] refer to Figure 1 and Figure 2 As shown, there are three first branch pipes 31. Furthermore, there are two first connecting holes 13, one of which connects to one first branch pipe 31, and the other connects to two first branch pipes 31. Of course, there can also be one, two, four, five, or six first branch pipes 31, etc., and each first connecting hole 13 can connect to one, two, three, four, five, or six first branch pipes 31, etc.

[0101] It should be noted that the welding connection between the multiple first branch pipes 31 and the main body 1 can ensure the connection strength between the first branch pipes 31 and the main body 1, improve the structural strength of the diversion assembly 100, and ensure the reliability and stability of the diversion assembly 100. Furthermore, during the welding process, the weld metal fills the gap between the main body 1 and the first branch pipes 31, forming a dense connection layer, which can effectively prevent refrigerant leakage.

[0102] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the heat exchanger assembly 200 also includes a second branch pipe 32, and at least one second branch pipe 32 is connected to the second connecting hole 14. The second branch pipe 32 is connected to the main body 1 and communicates with the second connecting hole 14. The second branch pipe 32 can be used to indirectly connect the main body 1 and the heat exchange tube 41 of the heat exchanger assembly 200, which can relatively reduce the difficulty of connecting the flow distribution assembly 100 and the heat exchange tube 41, reduce the probability of refrigerant leakage, and ensure the normal operation of the heat exchanger assembly 200.

[0103] Specifically, the second branch pipe 32 can be one, two, three, four, five or six, etc., and each second connecting hole 14 can be connected to one, two, three, four, five or six, etc.

[0104] It should be noted that the welding connection between the multiple second branch pipes 32 and the main body 1 can ensure the connection strength between the second branch pipes 32 and the main body 1, improve the structural strength of the diversion assembly 100, and ensure the reliability and stability of the diversion assembly 100. In addition, during the welding process, the weld metal fills the gap between the main body 1 and the second branch pipes 32, forming a dense connection layer, which can effectively prevent refrigerant leakage.

[0105] In some embodiments of this utility model, the inner diameter of the second branch pipe 32 is less than or equal to the inner diameter of the first branch pipe 31. When the refrigerant enters the second manifold 16 from the second port 12, the flow-blocking component 2 is activated, and part of the refrigerant flows from the second port 12 to the second connecting hole 14, while the other part of the refrigerant flows to the first connecting hole 13 after passing through the flow-blocking component 2.

[0106] Understandably, by making the inner diameter of the second branch pipe 32 smaller than that of the first branch pipe 31, the flow resistance of the refrigerant flowing into the second connecting hole 14 will increase after the refrigerant flows into the main body 1 from the second port 12. This allows more refrigerant to continue flowing towards the first connecting hole 13 after passing through the flow-blocking component 2, thereby meeting the flow requirements of the first connecting hole 13. This better achieves the flow-dividing effect, improves the problem of uneven flow distribution caused by refrigerant dynamic pressure, and further enhances the flow-dividing effect of the flow-dividing component 100. When the flow-dividing component 100 is applied to the heat exchanger assembly 200 and the air conditioning system 300, it can improve the heat exchange efficiency of the heat exchanger assembly 200, improve the cooling or heating performance of the air conditioning system 300, and improve energy efficiency.

[0107] In some embodiments of this utility model, the area of ​​the second connecting hole 14 is smaller than the area of ​​the first connecting hole 13. When the refrigerant enters the second manifold 16 from the second port 12, the flow-blocking component 2 is open, and part of the refrigerant flows from the second port 12 to the second connecting hole 14, while the other part of the refrigerant flows to the first connecting hole 13 after passing through the flow-blocking component 2.

[0108] Understandably, by making the area of ​​the second connecting hole 14 smaller than that of the first connecting hole 13, the flow resistance of the refrigerant flowing into the body part 1 from the second port 12 will increase. This allows more refrigerant to continue flowing towards the first connecting hole 13 after passing through the flow-blocking component 2, thus meeting the flow requirements of the first connecting hole 13. This better achieves the flow-dividing effect, improves the problem of uneven flow distribution caused by refrigerant dynamic pressure, and further enhances the flow-dividing effect of the flow-dividing component 100. When the flow-dividing component 100 is applied to the heat exchanger assembly 200 and the air conditioning system 300, it can improve the heat exchange efficiency of the heat exchanger assembly 200, improve the cooling or heating performance of the air conditioning system 300, and improve energy efficiency.

[0109] In some embodiments of this utility model, such as Figures 1-4 As shown, combined with Figures 10-12 The main body 1 includes a connecting pipe and a distributor 71. A flow-blocking component 2 is disposed on the connecting pipe 101. A second port 12 and a second connecting hole 14 are connected to the connecting pipe 101. At least one of the second port 12 and the second connecting hole 14 is connected to one end of the connecting pipe 101. The distributor 71 has a main interface 711 and a plurality of distribution holes 712. The main interface 711 is connected to the other end of the connecting pipe 101. At least some of the distribution holes 712 are first connecting holes 13.

[0110] The distributor 71 has a plurality of first connecting holes 13. The distributor 71 is connected to a plurality of first branch pipes 31 through the plurality of first connecting holes 13. The flow-blocking component 2 is disposed on the connecting pipe 101. Along the length direction of the connecting pipe 101, the first port 11 and the first connecting hole 13 are located on the same side of the flow-blocking component 2. The second port 12 and the second connecting hole 14 are located on the same side of the flow-blocking component 2. The first port 11 and the second port 12 are located on opposite sides of the flow-blocking component 2. The flow-blocking component 2 only allows the refrigerant to flow from the second port 12 side to the first connecting hole 13 side.

[0111] It is understood that the connecting pipe 101 has a main channel, and the first port 11, the second port 12, the first connecting hole 13, and the second connecting hole 14 are all connected to the main channel. Refrigerant flows in the main channel.

[0112] In some embodiments of this utility model, the connecting pipe 101 is arranged vertically or inclined, the flow-blocking component 2 is arranged vertically or inclined inside the connecting pipe 101, the distributor 71 forms a flow-dividing cavity, the main interface 711 and a plurality of first connecting holes 13 are respectively located on opposite sides of the distributor 71, the plurality of first connecting holes 13 are all connected to the flow-dividing cavity, the plurality of first connecting holes 13 face upward or obliquely upward, the main interface 711 is connected to the flow-dividing cavity and faces the plurality of first connecting holes 13, and the refrigerant flowing in from the main interface 711 is easily diverted to the plurality of first connecting holes 13.

[0113] The distributor 71 has multiple first connecting holes 13, which connect to multiple first branch pipes 31. The first branch pipes 31 can be used to indirectly connect the connecting pipe 101 to the heat exchange tubes 41 of the heat exchanger assembly 200, thereby reducing the difficulty of connecting the flow distribution assembly 100 to the heat exchange tubes 41, lowering the probability of refrigerant leakage, and ensuring the normal operation of the heat exchanger assembly 200. Specifically, the distributor 71 is used to distribute gas when the flow distribution assembly 100 is used as a gas pipe, and to distribute liquid when the flow distribution assembly 100 is used as a liquid pipe, to achieve uniform flow distribution among the multiple first branch pipes 31 connected to the distributor 71, thus ensuring consistent operating conditions of the multiple first branch pipes 31 and improving heat exchange stability.

[0114] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, combined with Figures 10-12 The distributor 71 has a main interface 711 and multiple distribution holes 712. The main interface 711 is connected to the connecting pipe 101, and at least some of the distribution holes 712 are first connecting holes 13.

[0115] Therefore, the refrigerant can flow between the main interface 711 of the distributor 71 and the connecting pipe 101, so that the refrigerant in the main body 1 can be evenly distributed to the first branch pipe 31 connected to the distribution hole 712 via the distributor 71, thereby achieving uniform flow distribution through the distributor 71 and improving the heat exchange stability of the heat exchanger assembly 200 using the flow distribution component 100.

[0116] In addition, the distributor 71 only undertakes distribution and does not merge. After the refrigerant is distributed to each distribution hole 712 at the main interface 711, it directly enters the corresponding first branch pipe 31. There is no secondary mixing and backflow interference between branches, and the mixing loss and additional pressure drop are reduced. Pressure pulsation and flow-induced noise are suppressed. In both cooling and heating modes, the distribution stability and heat exchange efficiency can be improved.

[0117] In some embodiments of this utility model, such as Figure 1 As shown, there are multiple first connecting holes 13, and each distribution hole 712 is connected to a first branch pipe 31. The first port 11 is located on the connecting pipe between the distributor 71 and the flow blocking component 2.

[0118] Understandably, when refrigerant flows into the distribution assembly 100 from the first port 11, because the flow-blocking component 2 is not conductive, the refrigerant enters the distributor 71 from the main interface 711 through the first connecting hole 13, and flows into the corresponding first branch pipe 31 through the multiple distribution holes 712 of the distributor 71, thereby achieving uniform flow distribution. Simultaneously, when refrigerant flows into the distribution assembly 100 from the second port 12, because the flow-blocking component 2 is conductive, part of the refrigerant flows out from the second connecting hole 14, while the other part passes through the flow-blocking component 2 in the connecting pipe 101, enters the distributor 71 from the main interface 711 through the first connecting hole 13, and flows into the corresponding first branch pipe 31 through the multiple distribution holes 712 of the distributor 71, thereby achieving uniform flow distribution.

[0119] Thus, this configuration ensures that the refrigerant, whether entering the distribution assembly 100 from the first port 11 or the second port 12, converges to the first connecting hole 13, then flows into the distributor 71 through the first connecting hole 13 and the main interface 711, and is then distributed at equal pressure to each distribution hole 712. This effectively avoids the formation of bypasses and stagnation chambers that bypass the distributor 71, reduces energy loss, and improves the heat exchange efficiency of the heat exchanger assembly 200 using this distribution assembly 100.

[0120] In some embodiments of this utility model, such as Figure 2 As shown, there are multiple first connecting holes 13 and N distribution holes 712. N-1 distribution holes 712 are connected to a first branch pipe 31, and the remaining distribution hole 712 forms a first port 11.

[0121] Therefore, when the refrigerant flows into the distribution assembly 100 from the first port 11, all the refrigerant flows into the distributor 71. Since the flow-blocking component 2 is not conductive, the refrigerant flows from the distributor 71 through the other distribution holes 712 to the corresponding first branch pipes 31, thereby achieving uniform flow distribution. Furthermore, by integrating the distribution assembly 100 with the distributor 71 through the first port 11, the overall compactness of the distribution assembly 100 is improved, which is conducive to miniaturization and reduces the space occupied by the distribution assembly 100 in the heat exchanger assembly 200. When the refrigerant enters the distribution assembly 100 from the second port 12 and reaches the first connecting hole 13 through the flow-blocking component 2, it is also evenly distributed to the other distribution holes 712 through the main interface 711, which ensures both compact arrangement and uniform supply to each first branch pipe 31, so that the distribution assembly 100 is suitable for miniaturized application scenarios.

[0122] In addition, when the refrigerant flows into the distribution assembly 100 from the first port 11, it forms the first port 11 through the other distribution hole 712. After entering from the first port 11, the refrigerant is directly distributed at the same pressure in the distributor 71 and is evenly distributed by the other distribution holes 712. The flow path of the refrigerant is short and the additional pressure drop is small, which improves the flow efficiency.

[0123] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, along the length of the connecting pipe 101, the distance between the main interface 711 and the outlet end of the flow-blocking component 2 is 15mm-500mm. It is understandable that if the distance between the first connecting hole 13 and the flow-blocking component 2 is too small, the welding / assembly interference between the distributor 71 and the flow-blocking component 2 on the connecting pipe 101 is likely to overlap, leading to a risk of leakage. Conversely, if the distance between the first connecting hole 13 connected to the distributor 71 and the flow-blocking component 2 is too large, the refrigerant entering the connecting pipe 101 from the second port 12 will not reach the first connecting hole 13 near the first port 11 after being conducted through the flow-blocking component 2, making timely replenishment difficult under low-flow conditions. Furthermore, the excessive size of the diversion component 100 leads to increased space occupation and cost.

[0124] Therefore, by limiting the distance between the first connecting hole 13 connected to the distributor 71 and the flow blocking component 2 to 15mm-500mm, the size of the flow distribution component 100 is reduced, while effectively avoiding problems such as assembly interference and unstable supply caused by insufficient pressure difference. This further ensures that the flow distribution component 100 distributes evenly, switches operating conditions smoothly, and improves energy efficiency and reliability.

[0125] It should be noted that, along the length of the connecting pipe 101, the distance between the first connecting hole 13 connected to the distributor 71 and the flow-blocking component 2 can be 15mm, 20mm, 30mm, 40mm, 50mm, 80mm, 100mm, 150mm, 200mm, 300mm, 400mm or 500mm.

[0126] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, along the length of the connecting pipe 101, the distance between the second connecting hole 14 and the inlet end of the flow-blocking component 2 is 15mm-100mm. It is understandable that if the distance between the second connecting hole 14 and the inlet end of the flow-blocking component 2 is too small, the welding / assembly interference between the second branch pipe 32 connected to the second connecting hole 14 and the flow-blocking component 2 on the connecting pipe 101 is likely to overlap, leading to a risk of leakage. Conversely, if the distance between the second connecting hole 14 and the inlet end of the flow-blocking component 2 is too large, the refrigerant entering the connecting pipe 101 from the second port 12 will flow insufficiently through the second connecting hole 14 to the second branch pipe 32 before flowing to the flow-blocking component 2, making timely replenishment difficult under low-flow conditions.

[0127] Therefore, the distance between the second connecting hole 14 and the inlet end of the flow blocking component 2 is 15mm-100mm. This reduces the size of the flow splitter 100 while effectively avoiding problems such as assembly interference and unstable supply caused by insufficient pressure difference. This further ensures that the flow splitter 100 distributes evenly, switches operating conditions smoothly, and improves energy efficiency and reliability.

[0128] It should be noted that, along the length of the connecting pipe 101, the distance between the second connecting hole 14 and the inlet end of the flow-blocking component 2 can be 15mm, 20mm, 30mm, 40mm, 50mm, 80mm or 100mm.

[0129] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, along the length of the connecting pipe 101, the distance between the second connecting hole 14 and the inlet end of the flow-blocking component 2 is less than the distance between the main interface 711 and the outlet end of the flow-blocking component 2.

[0130] It is understandable that the refrigerant entering the connecting pipe 101 from the second port 12 passes sequentially through the second connecting hole 14, the inlet end of the flow-blocking component 2, and the main interface 711, so that the refrigerant flows sequentially into the second branch pipe 32, the flow-blocking component 2, and the distributor 71. The distance between the second connecting hole 14 and the inlet end of the flow-blocking component 2 is less than the distance between the main interface 711 and the outlet end of the flow-blocking component 2, which effectively improves the problem of uneven flow distribution caused by the dynamic pressure of the refrigerant and further improves the flow distribution effect of the flow distribution component 100.

[0131] In some embodiments of this utility model, such as Figure 1 and Figure 2As shown, the heat exchanger assembly 200 also includes an inlet pipe 33, one end of which is connected to the first port 11. The inlet pipe 33 is connected to the main body 1 and communicates with the first port 11. The arrangement of the inlet pipe 33 facilitates indirect connection between the main body 1 and components such as the four-way valve in the air conditioning system 300, which can relatively reduce the difficulty of connecting the flow distribution assembly 100 with other components, and helps to reduce the probability of refrigerant leakage, thus ensuring the normal operation of the air conditioning system 300.

[0132] For example, such as Figure 5 As shown, when the air conditioning system 300 is in cooling mode, the heat exchanger assembly 200 acts as a condenser. The refrigerant flows into the heat exchanger assembly 200 from the inlet pipe 33. At this time, the flow-blocking component 2 is not open, and the refrigerant enters the heat exchange tube 41 from the first connecting hole 13. The third port 51 is closed. After being collected by the flow-collecting component 5, the refrigerant re-enters the heat exchange tube 41, then enters the body part 1 from the second connecting hole 14, and finally flows out of the heat exchanger assembly 200 from the second port 12.

[0133] like Figure 6 As shown, when the air conditioning system 300 is in heating mode, the heat exchanger assembly 200 acts as an evaporator. Refrigerant flows into the heat exchanger assembly 200 from the second port 12. The flow-blocking component 2 is open, and part of the refrigerant enters the heat exchange tube 41 from the second connecting hole 14. Another part of the refrigerant passes through the flow-blocking component 2 in the body part 1, and then enters the heat exchange tube 41 through the first connecting hole 13. The third port 51 is open, and the refrigerant in the heat exchange tube 41 flows out of the heat exchanger assembly 200 through the third port 51 after being collected by the flow-collecting component 5. At this time, the intake pipe 33 is set to an open circuit state and has a liquid storage function. Part of the liquid refrigerant in the body part 1 will be stored in the intake pipe 33 and will not participate in the circulation of the air conditioning system 300, thus regulating the refrigerant flow rate in the air conditioning system 300. The length and diameter of the intake pipe 33 can be adjusted according to the specific operating requirements of the air conditioning system 300, thereby regulating the refrigerant flow rate in the air conditioning system 300 according to the specific situation.

[0134] It should be noted that the intake pipe 33 is welded to the main body 1, which can ensure the connection strength between the intake pipe 33 and the main body 1, improve the structural strength of the diversion assembly 100, and ensure the reliability and stability of the diversion assembly 100. In addition, during the welding process, the weld metal fills the gap between the main body 1 and the intake pipe 33, forming a dense connection layer, which can effectively prevent refrigerant leakage.

[0135] In some embodiments of this utility model, such as Figure 1 and Figure 2As shown, the intake pipe 33 is U-shaped. When the refrigerant enters through the intake pipe 33, the U-shape of the intake pipe 33 allows the refrigerant to accelerate under the action of centrifugal force, thereby increasing the flow power of the refrigerant within the body 1 and preventing the refrigerant from accumulating at the intake pipe 33. This can improve the flow distribution of the refrigerant within the distribution assembly 100. When the distribution assembly 100 is applied to the heat exchanger assembly 200, it can improve the heat exchange efficiency of the heat exchanger assembly 200 and increase energy efficiency.

[0136] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the heat exchanger assembly 200 also includes an extension pipe 34, one end of which is connected to the second port 12. The extension pipe 34 is connected to the main body 1 and communicates with the second port 12. The extension pipe 34 facilitates indirect connection between the main body 1 and components such as the throttling device 64 in the air conditioning system 300, which can relatively reduce the difficulty of connecting the flow distribution assembly 100 with other components, and help reduce the probability of refrigerant leakage, thus ensuring the normal operation of the air conditioning system 300.

[0137] For example, such as Figure 5 As shown, when the air conditioning system 300 is in cooling mode, the heat exchanger assembly 200 acts as a condenser. The refrigerant flows into the heat exchanger assembly 200 from the first port 11. At this time, the flow-blocking component 2 is not open, and the refrigerant enters the heat exchange tube 41 from the first connecting hole 13. The third port 51 is closed. After being collected by the flow-collecting component 5, the refrigerant re-enters the heat exchange tube 41, then enters the body part 1 from the second connecting hole 14, and finally flows out of the heat exchanger assembly 200 from the extension pipe 34.

[0138] like Figure 6 As shown, when the air conditioning system 300 is in heating mode, the heat exchanger assembly 200 acts as an evaporator. Refrigerant flows into the heat exchanger assembly 200 from the extension pipe 34. The flow-blocking component 2 is open, and part of the refrigerant enters the heat exchange tube 41 from the second connecting hole 14. Another part of the refrigerant passes through the flow-blocking component 2 in the body part 1 and then enters the heat exchange tube 41 through the first connecting hole 13. The third port 51 is open, and the refrigerant in the heat exchange tube 41 flows out of the heat exchanger assembly 200 through the third port 51 after being collected by the flow-collecting component 5.

[0139] It should be noted that the extension tube 34 is welded to the main body 1, which can ensure the connection strength between the extension tube 34 and the main body 1, improve the structural strength of the diversion assembly 100, and ensure the reliability and stability of the diversion assembly 100. In addition, during the welding process, the weld metal fills the gap between the main body 1 and the extension tube 34, forming a dense connection layer, which can effectively prevent refrigerant leakage.

[0140] In some embodiments of this utility model, such as Figure 1 and Figure 2As shown, the extension pipe 34 is a U-shaped pipe. When the refrigerant enters through the extension pipe 34, the U-shaped extension pipe 34 can accelerate the refrigerant under the action of centrifugal force, thereby increasing the refrigerant flow power within the main body 1 and preventing the refrigerant from accumulating at the extension pipe 34. This can improve the refrigerant flow distribution within the flow distribution assembly 100. When the flow distribution assembly 100 is applied to the heat exchanger assembly 200, it can improve the heat exchange efficiency of the heat exchanger assembly 200 and improve energy efficiency.

[0141] In some embodiments of this utility model, the flow-blocking component 2 is a one-way valve, a solenoid valve, or a baffle. Depending on the specific operational requirements of the flow-diverting assembly 100, a one-way valve, a solenoid valve, or a baffle can be selected as the flow-blocking component 2. This method is simple in structure, easy to implement, and low in cost, and can meet the requirement of allowing only the refrigerant within the main body 1 to flow from the second port 12 to the first port 11.

[0142] In some embodiments of this utility model, such as Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the heat exchanger assembly 200 also includes a flow manifold 5, which is located on one side of the heat exchanger body 4 and is connected to multiple flow paths. The flow manifold 5 has a third port 51. The flow manifold 5 has the function of collecting and distributing flow, and the refrigerant is adapted to flow from one of the flow distribution assembly 100 and the flow manifold 5 to the other.

[0143] For example, when the heat exchanger assembly 200 is applied to the air conditioning system 300, such as Figure 5 As shown, when the air conditioning system 300 is in cooling mode, the heat exchanger assembly 200 acts as a condenser. Refrigerant flows into the heat exchanger assembly 200 from the first port 11. At this time, the flow-blocking component 2 is not conductive, and the refrigerant enters the heat exchange tube 41 of the first flow path 42 from the first connecting hole 13. The third port 51 is set to an open circuit state. After being collected by the flow-collecting component 5, the refrigerant enters the heat exchange tube 41 of the second flow path 43 from the first flow path 42, then enters the main body 1 from the second connecting hole 14, and finally flows out of the heat exchanger assembly 200 from the second port 12. The refrigerant entering the heat exchange tube 41 from the first connecting hole 13 and then re-entering the heat exchange tube 41 after being collected by the flow-collecting component 5 can further reduce the temperature of the refrigerant and increase its subcooling, thus forming a subcooling tube design for the condenser and better enhancing the heat exchange efficiency of the heat exchanger assembly 200.

[0144] like Figure 6As shown, when the air conditioning system 300 is in heating mode, the heat exchanger assembly 200 acts as an evaporator. The refrigerant evaporates and absorbs heat in the heat exchanger assembly 200. The refrigerant flows into the heat exchanger assembly 200 from the second port 12. At this time, the flow-blocking component 2 is open, and part of the refrigerant enters the heat exchange tube 41 of the second flow path 43 from the second connecting hole 14. Another part of the refrigerant passes through the flow-blocking component 2 within the body part 1, and then enters the heat exchange tube 41 of the first flow path 42 through the first connecting hole 13. At this time, the third port 51 is open, and the refrigerant in multiple flow paths flows out of the heat exchanger assembly 200 through the third port 51 after being collected by the flow-collecting component 5. Through the cooperation of the flow-dividing component 100 and the heat exchange tube 41, a multi-flow heat exchange pattern can be formed, thereby improving the heat exchange efficiency of the heat exchanger assembly 200.

[0145] Furthermore, in heating mode, the refrigerant needs to pass through a subcooling pipe when entering the conventional outdoor heat exchanger, resulting in pressure loss. However, in this application, by setting a flow-diverting assembly 100 with a flow-blocking component 2, the heat exchanger assembly 200 can form a different flow path in heating mode than in cooling mode. In heating mode, the refrigerant does not need to pass through a subcooling pipe when entering the heat exchanger assembly 200, thus avoiding significant pressure loss.

[0146] In the air conditioning system 300, the heat exchanger assembly 200 serves as the outdoor heat exchanger. During cooling and heating modes, the heat exchanger assembly 200 functions as both the condenser and evaporator, respectively. In these modes, the refrigerant undergoes boiling evaporation and cooling condensation processes within the heat exchanger assembly 200. By incorporating a flow-diverting assembly 100 with flow-blocking components 2 and a flow-collecting assembly 5, given a fixed area and volume of the heat exchanger assembly 200, different flow paths can be created for the refrigerant, resulting in different optimal flow path designs for the heat exchange during the evaporation and condensation processes within the heat exchanger assembly 200.

[0147] In some embodiments of this utility model, such as Figure 4 In the example shown, the flow collector 5 and the flow divider 100 are located on the same side along the length of the heat exchanger body 4. The positions of the flow collector 5 and the flow divider 100 can be selected according to the number of rows of heat exchange tubes 41 arranged along the thickness direction of the heat exchanger body 4 and the specific arrangement of the first flow path 42 and the second flow path 43, making the connection between the flow collector 5 and the flow divider 100 and the heat exchanger body 4 simpler and more convenient.

[0148] In some embodiments of this utility model, reference is made to Figure 8 and Figure 9The flow collection assembly 5 includes a main pipe 52 and branch pipes 53. The main pipe 52 has a third port 51. One end of the branch pipe 53 is connected to the main pipe 52. The inner diameter of the main pipe 52 is greater than or equal to the inner diameter of the branch pipe 53. There are multiple branch pipes 53. The ends of the multiple branch pipes 53 that are away from the main pipe 52 are respectively connected to the end of the first flow path 42 that is away from the first connecting hole 13 and the end of the second flow path 43 that is away from the second connecting hole 14.

[0149] The main pipe 52 has a third port 51, and there are multiple branch pipes 53. One end of each branch pipe 53 is connected to the main pipe 52, and the inner diameter of the main pipe 52 is greater than or equal to the inner diameter of the branch pipe 53. It should be noted that in the prior art, due to installation considerations, the inner diameter of the main pipe 52 is larger than the inner diameter of the branch pipe 53, so that the branch pipe 53 can be inserted into the peripheral wall of the main pipe 52. However, this results in excessive material usage in the main pipe 52, leading to increased costs.

[0150] It is understandable that the manifold 5 is used to connect to the heat exchange tube 41 of the heat exchanger body 4. The inner diameter of the branch pipe 53 is the same as the inner diameter of the heat exchange tube 41. While keeping the inner diameter of the branch pipe 53 unchanged, that is, keeping the inner diameter of the heat exchange tube 41 unchanged, the inner diameter of the main pipe 52 is equal to the inner diameter of the branch pipe 53, thereby reducing the inner diameter of the main pipe 52, thereby reducing the material, weight and cost of the main pipe 52, which is beneficial to the economy and lightweight of the manifold 5, and thus beneficial to the economy and lightweight of the heat exchanger assembly 200.

[0151] Meanwhile, since the inner diameter of the heat exchange tube 41 remains unchanged, the material used in the heat exchange tube 41 is sufficient, and the manifold 5 does not participate in the heat exchange process, thus it will not affect the heat exchange efficiency of the heat exchanger assembly 200. In addition, as the inner diameter of the manifold 5 decreases, the refrigerant flows faster in the manifold 5, thereby reducing the pressure loss caused by the reduction in the inner diameter of the manifold 5, further avoiding any impact on the heat exchange efficiency of the heat exchanger assembly 200.

[0152] The arrangement of multiple branch pipes 53 further improves the heat exchange efficiency of the heat exchanger assembly 200. For example, in a specific embodiment, there are 4 branch pipes 53, but the present invention is not limited to this. The number of branch pipes 53 can also be other numbers, such as 2, 3, 5 or 6.

[0153] Optionally, the ratio of the inner diameter of the main pipe 52 to the inner diameter of the branch pipe 53 is 1:1 to 9:7. For example, the ratio of the inner diameter of the main pipe 52 to the inner diameter of the branch pipe 53 can be 9:7, 9:8 or 1:1.

[0154] In some embodiments of this utility model, the outer diameter of the main pipe 52 is greater than or equal to the outer diameter of the branch pipe 53, thereby reducing the inner diameter of the main pipe 52, which in turn reduces the material, weight and cost of the main pipe 52, which is beneficial to the economy and lightweight of the manifold 5, and thus to the economy and lightweight of the heat exchanger assembly 200.

[0155] Optionally, the ratio of the outer diameter of the main pipe 52 to the outer diameter of the branch pipe 53 is 1:1 to 9:7. For example, the ratio of the outer diameter of the main pipe 52 to the outer diameter of the branch pipe 53 is 9:7, 9:8 or 1:1.

[0156] The inner diameter of the main pipe 52 is greater than or equal to the inner diameter of the branch pipe 53, or the outer diameter of the main pipe 52 is greater than or equal to the outer diameter of the branch pipe 53. On the one hand, the inner diameter of the main pipe 52 is reduced, thereby reducing the material, weight and cost of the main pipe 52, which is beneficial to the economy and lightweight of the manifold assembly 5, and thus beneficial to the economy and lightweight of the heat exchanger assembly 200. On the other hand, the heat exchange efficiency of the heat exchanger assembly 200 is guaranteed.

[0157] In some embodiments of this utility model, such as Figure 6 As shown, when the heat exchanger assembly functions as an evaporator, refrigerant flows into the heat exchanger assembly 200 from the second port 12, and then flows into the heat exchange tube 41 of the heat exchanger assembly 200 from the first connecting hole 13 and the second connecting hole 14, before flowing out of the heat exchanger assembly from the third port 51. The flow-blocking component 2 is open, and the first port 11 is closed. In this embodiment, the first port 11 is closed by a valve in the air conditioner, for example, by a five-way valve 636.

[0158] When the heat exchanger assembly 200 is applied to the air conditioning system 300, the air conditioning system 300 is in heating mode. The refrigerant evaporates and absorbs heat in the heat exchanger assembly 200. The refrigerant flows into the heat exchanger assembly 200 from the second port 12. At this time, the flow-blocking component 2 is open, and part of the refrigerant enters the heat exchange tube 41 of the second flow path 43 from the second connecting hole 14. Another part of the refrigerant passes through the flow-blocking component 2 in the body part 1, the first port 11 is closed, and then enters the heat exchange tube 41 of the first flow path 42 through the first connecting hole 13. At this time, the third port 51 is open, and the refrigerant in multiple flow paths flows out of the heat exchanger assembly 200 through the third port 51 after being collected by the flow-collecting component 5. By cooperating with the flow-dividing component 100 and the heat exchange tube 41, a multi-flow heat exchange pattern can be formed, thereby improving the heat exchange efficiency of the heat exchanger assembly 200.

[0159] Furthermore, in heating mode, the refrigerant needs to pass through a subcooling pipe when entering the conventional outdoor heat exchanger, resulting in pressure loss. However, in this application, by setting a flow-diverting assembly 100 with a flow-blocking component 2, the heat exchanger assembly 200 can form a different flow path in heating mode than in cooling mode. In heating mode, the refrigerant does not need to pass through a subcooling pipe when entering the heat exchanger assembly 200, thus avoiding significant pressure loss.

[0160] like Figure 5 As shown, when the heat exchanger assembly functions as a condenser, refrigerant flows into the heat exchanger assembly from the first port 11, and then flows into the heat exchange tube 41 of the heat exchanger assembly from the first connecting hole 13, and subsequently flows out of the heat exchanger assembly from the second connecting hole 14 and the second port 12. Both the flow-blocking component 2 and the third port 51 are blocked. In this embodiment, the third port 51 is blocked by a valve in the air conditioner, for example, by a five-way valve 636.

[0161] When the heat exchanger assembly 200 is applied to the air conditioning system 300, the air conditioning system 300 is in cooling mode. Refrigerant flows into the heat exchanger assembly 200 from the first port 11. At this time, the flow-blocking component 2 is not conductive. The refrigerant enters the heat exchange tube 41 of the first flow path 42 from the first connecting hole 13. The third port 51 is set to an open circuit state. After being collected by the flow-collecting component 5, the refrigerant enters the heat exchange tube 41 of the second flow path 43 from the first flow path 42, then enters the body part 1 from the second connecting hole 14, and finally flows out of the heat exchanger assembly 200 from the second port 12. The refrigerant entering the heat exchange tube 41 from the first connecting hole 13 and then re-entering the heat exchange tube 41 after being collected by the flow-collecting component 5 can further reduce the temperature of the refrigerant and increase its subcooling, thus forming a subcooling tube design for the condenser and better enhancing the heat exchange efficiency of the heat exchanger assembly 200.

[0162] In the air conditioning system 300, the heat exchanger assembly 200 serves as the outdoor heat exchanger. During cooling and heating modes, the heat exchanger assembly 200 functions as both the condenser and evaporator, respectively. In these modes, the refrigerant undergoes boiling evaporation and cooling condensation processes within the heat exchanger assembly 200. By incorporating a manifold distribution assembly 100 with flow-blocking components 2, given a fixed area and volume of the heat exchanger assembly 200, different flow paths can be created for the refrigerant. This allows for different optimal flow path designs for the heat exchange during the evaporation and condensation processes within the heat exchanger assembly 200. This improves the heat exchange efficiency of the heat exchanger assembly 200, thereby enhancing the cooling or heating performance of the air conditioning system 300 and improving energy efficiency.

[0163] In some embodiments of this utility model, such as Figure 5 and Figure 6As shown, there are multiple first connecting holes 13. When the heat exchanger assembly 200 functions as an evaporator and when it functions as a condenser, the multiple first connecting holes 13 are used to distribute the refrigerant. This improves the refrigerant flow distribution within the distribution assembly 100, achieving a better flow path distribution effect. When the distribution assembly 100 is applied to the heat exchanger assembly 200, it ensures that the refrigerant can be more evenly distributed into different flow paths of the heat exchanger assembly 200, thereby improving the heat exchange efficiency and energy efficiency of the heat exchanger assembly 200. Furthermore, the multiple first connecting holes 13 are located above or diagonally above the flow-blocking component 2, and the multiple first connecting holes 13 face horizontally, upwards, or diagonally upwards, thus facilitating the distribution of refrigerant to the multiple first connecting holes 13.

[0164] In some embodiments of this invention, the first flow path 42 is located above the second flow path 43; and / or the airflow or average velocity flowing through the first flow path 42 is greater than the airflow or average velocity flowing through the second flow path 43. Thus, when the heat exchanger assembly 200 functions as a condenser, the refrigerant first passes through the first flow path 42 and then through the second flow path 43. Because the refrigerant flowing through the first flow path 42 has a higher temperature and a greater airflow or average velocity, the heat exchange efficiency of the first flow path 42 can be improved, thereby improving the heat exchange efficiency of the heat exchanger assembly 200 when it functions as a condenser, and thus improving energy efficiency.

[0165] The following describes an air conditioning system 300 according to an embodiment of the present invention.

[0166] An air conditioning system 300 according to an embodiment of the present invention includes: a compressor 61, an indoor heat exchanger 62, the aforementioned heat exchanger assembly 200, and a reversing assembly 63.

[0167] Specifically, such as Figure 5 and Figure 6As shown, the compressor 61 has an exhaust port 611 and a return port 612. One end of the indoor heat exchanger 62 is connected to the second port 12. The reversing assembly 63 has a first port 631, a second port 632, a third port 633, a fourth port 634, and a fifth port 635. The first port 631 is connected to the exhaust port 611, the third port 633 is connected to the return port 612, the second port 632 is connected to the other end of the indoor heat exchanger 62, and the fourth port 634 connects one end of the first flow path 42 away from the first connecting hole 13 and one end of the second flow path 43 away from the second connecting hole 14. The fifth port 635 is connected to the first port 11. The commutation component 63 has a first switching state and a second switching state. When the commutation component 63 is in the first switching state, the first port 631 is connected to the fifth port 635, the second port 632 is connected to the third port 633, and the fourth port 634 is cut off to close the third port 51 (so that the third port is cut off). When the commutation component 63 is in the second switching state, the first port 631 is connected to the second port 632, the third port 633 and the fourth port 634 are connected, and the fifth port 635 is cut off to cut off the first port 11.

[0168] In the air conditioning system 300, during the specific operation of the air conditioning system 300, such as Figure 5 As shown in the example, when the air conditioning system 300 is in cooling mode, the commutator 63 is in the first switching state, and the first port 631 of the commutator 63 is connected to the fifth port 635, and the second port 632 is connected to the third port 633.

[0169] Therefore, compressor 61 compresses the refrigerant into a high-temperature, high-pressure gas. The high-pressure gaseous refrigerant enters the reversing assembly 63 through the compressor 61's exhaust port 611 and the first port 631, and then flows to the heat exchanger assembly 200 through the fifth port 635. The heat exchanger assembly 200 can exchange heat with the external environment and dissipate heat through condensation. The refrigerant flows within the heat exchanger assembly 200 and releases heat to the external environment, thus changing from a gaseous state to a liquid state. The high-pressure liquid refrigerant flowing out of the heat exchanger assembly 200 then flows to the throttling device 64, which reduces the refrigerant pressure, allowing the low-pressure liquid refrigerant to flow into the indoor heat exchanger 62. The indoor heat exchanger 62 absorbs heat. The refrigerant is heated and vaporized within the indoor heat exchanger 62, changing from a liquid state to a gaseous state, thereby carrying away the heat from the airflow flowing over the surface of the indoor heat exchanger 62. The low-temperature airflow is then delivered into the room by the indoor unit of the air conditioner to achieve the purpose of cooling. Meanwhile, the low-pressure gaseous refrigerant flows to the second port 632 of the reversing component 63, and from the third port 633 to the return port 612 to return to the compressor 61 for compression again, thereby forming a refrigerant cycle and achieving the cooling effect of the air conditioning system 300.

[0170] In this process, refrigerant flows into the heat exchanger assembly 200 from the first port 11. At this time, the flow-blocking component 2 is not conductive. The refrigerant enters the heat exchange tube 41 of the first flow path 42 from the first connecting hole 13, then enters the heat exchange tube 41 of the second flow path 43 from the first flow path 42, then enters the body part 1 from the second connecting hole 14, and finally flows out of the heat exchanger assembly 200 from the second port 12. The refrigerant first enters the heat exchange tube 41 of the first flow path 42 from the first connecting hole 13, and after being collected, it enters the heat exchange tube 41 of the second flow path 43. This can further reduce the temperature of the refrigerant and increase its subcooling, thereby forming a subcooling tube design for the condenser and better enhancing the heat exchange efficiency of the heat exchanger assembly 200.

[0171] Similarly, such as Figure 6 As shown in the example, when the air conditioning system 300 is in heating mode, when the reversing component 63 is in the second switching state, the first port 631 of the reversing component 63 is connected to the second port 632, and the third port 633 and the fourth port 634 are connected.

[0172] Therefore, compressor 61 compresses the refrigerant into a high-temperature, high-pressure gas. The high-pressure gaseous refrigerant enters the reversing assembly 63 through the compressor 61's exhaust port 611 and the first port 631, and then flows to the indoor heat exchanger 62 through the second port 632. The indoor heat exchanger 62 can exchange heat with the airflow flowing over its surface. The airflow absorbs heat, and the refrigerant condenses and dissipates heat. The high-temperature airflow is sent into the room by the indoor unit of the air conditioner to achieve the purpose of heating. The refrigerant flows in the indoor heat exchanger 62 and releases heat into the indoor environment, thus changing from a gaseous state to a liquid state. The high-pressure liquid refrigerant flowing out of the indoor heat exchanger 62 then flows to the throttling device 64. The throttling device 64 can throttle the flow, reduce the pressure of the refrigerant, and allow the low-pressure liquid refrigerant to flow into the heat exchanger assembly 200. The heat exchanger assembly 200 can absorb heat. The refrigerant absorbs heat and vaporizes in the heat exchanger assembly 200, changing from a liquid state to a gaseous state, thereby carrying away the heat flowing through the outdoor environment. The low-pressure gaseous refrigerant flows to the fourth port 634 of the reversing assembly 63, and from the third port 633 to the return port 612 to return to the compressor 61 for compression again, thus forming a refrigerant cycle and achieving the heating effect of the air conditioning system 300.

[0173] In this process, refrigerant flows into the heat exchanger assembly 200 from the second port 12. At this time, the flow-blocking component 2 is open, and part of the refrigerant enters the heat exchange tube 41 of the second flow path 43 from the second connecting hole 14. Another part of the refrigerant passes through the flow-blocking component 2 in the body part 1, and then enters the heat exchange tube 41 of the first flow path 42 through the first connecting hole 13. The refrigerant from multiple flow paths is collected and flows out of the heat exchanger assembly 200 and flows to the fourth port 634 of the reversing component 63. By cooperating with the flow-diverting component 100 and the heat exchange tube 41 body, a multi-flow-path heat exchange pattern can be formed, thereby improving the heat exchange efficiency of the heat exchanger assembly 200.

[0174] By setting up the reversing assembly 63, the flow path of the air conditioning system 300 can be automatically switched without changing any components. This allows the refrigerant to automatically switch its flow direction within the reversing assembly 63, thereby enabling the air conditioning system 300 to automatically switch between cooling and heating modes to meet the needs of various environmental conditions. Furthermore, no manual adjustment is required, greatly improving the convenience and efficiency of operation, thus enhancing the reliability and efficiency of the air conditioning system 300 and ultimately improving user comfort.

[0175] By adding a flow-blocking component 2 to the flow distribution assembly 100, the flow-blocking component 2 automatically opens, closes, or cuts off the flow based on the pressure difference of the refrigerant on both sides. This allows for automatic flow guidance of the refrigerant by the flow-blocking component 2, changing the flow direction of the refrigerant. In different modes of the air conditioning system 300, automatic switching of the refrigerant's flow path within the heat exchanger assembly 200 can be achieved, improving the heat exchange efficiency of the heat exchanger assembly 200, enhancing the cooling or heating performance of the air conditioning system 300, and improving energy efficiency. Furthermore, no other control structure is required, making it less susceptible to power failures, and the structure is simple, easy to implement, and low in cost.

[0176] Furthermore, the first connecting hole 13 is connected to one end of at least one first flow path 42, and the second connecting hole 14 is connected to one end of at least one second flow path 43. The heat exchange tubes 41 are arranged in multiple rows along the thickness direction of the heat exchanger body 4. Both the first flow path 42 and the second flow path 43 include multiple rows of heat exchange tubes 41. The heat exchange tubes 41 of the first flow path 42 connected to the first connecting hole 13 and the heat exchange tubes 41 of the second flow path 43 connected to the second connecting hole 14 are located on opposite sides of the thickness direction of the heat exchanger body 4 or in different rows.

[0177] It is understandable that when the heat exchanger assembly 200 functions as a condenser, the refrigerant flows in the same direction as the thickness of the heat exchanger body 4. This facilitates the setting of the position and orientation of the heat exchanger assembly 200 and the control of the flow direction of the airflow exchanging heat with the heat exchanger assembly 200, ensuring that the flow direction of the airflow exchanging heat with the heat exchanger assembly 200 is opposite to the flow direction of the refrigerant within the heat exchanger body 4. This facilitates a counter-current arrangement of the refrigerant and the heat exchange airflow. This counter-current arrangement allows the refrigerant and the heat exchange airflow to maintain a large temperature difference on the heat exchange tube 41, thereby maximizing heat exchange efficiency. This effectively improves the heat exchange efficiency of the heat exchanger assembly 200, and when the heat exchanger assembly 200 is applied to the air conditioning system 300, it can improve the performance and energy efficiency of the air conditioning system 300.

[0178] According to the embodiment of the present invention, the air conditioning system 300 connects a first connecting hole 13 on the main body 1 to one end of at least one first flow path 42, and a second connecting hole 14 on the main body 1 to one end of at least one second flow path 43. The heat exchange tubes 41 of the first flow path 42 connected to the first connecting hole 13 and the heat exchange tubes 41 of the second flow path 43 connected to the second connecting hole 14 are located on opposite sides or in different rows along the thickness direction of the heat exchanger body 4. When the heat exchanger assembly 200 acts as a condenser, the refrigerant can flow in the heat exchange tubes 41 in the same direction along the thickness direction of the heat exchanger body 4. This facilitates setting the position and orientation of the heat exchanger assembly 200 and controlling the flow direction of the airflow exchanging heat with the heat exchanger assembly 200, thus facilitating the counter-current arrangement of the refrigerant and the heat exchange airflow. This maintains a large temperature difference between the refrigerant and the heat exchange airflow on the heat exchange tubes 41, thereby maximizing the heat exchange efficiency of the heat exchange tubes 41. This is beneficial to improving the heat exchange efficiency of the heat exchanger assembly 200, which in turn helps to improve the performance and energy efficiency of the air conditioning system 300.

[0179] In some embodiments, the reversing assembly 63 includes a four-way valve, a pilot valve 637, and a three-way valve. The four-way valve has a first port 631, a second port 632, a third port 633, and a fourth branch port. The pilot valve 637 is used to control the first port 631 to communicate with one of the second port 632 and the third port 633, and the fourth branch port to communicate with the other of the second port 632 and the third port 633. The three-way valve has three ports, one of which is connected to the fourth branch port, and the other two ports are respectively formed as the fourth port 634 and the fifth port 635.

[0180] In some embodiments, such as Figure 5 , Figure 6 and Figure 7 As shown, the reversing assembly 63 includes a five-way valve 636 and a pilot valve 637. The five-way valve 636 has a first port 631, a second port 632, a third port 633, a fourth port 634, and a fifth port 635 disposed on the five-way valve 636. The pilot valve 637 is used to control the connection between the first port 631 and the fifth port 635 and the connection between the second port 632 and the third port 633, or to control the connection between the first port 631 and the second port 632 and the connection between the third port 633 and the fourth port 634.

[0181] In some embodiments, such as Figure 5 , Figure 6 and Figure 7As shown, the five-way valve 636 includes a first valve body 601 and a first connecting member 602. The first valve body 601 has a first valve cavity, and a first port 631, a second port 632, a third port 633, a fourth port 634, and a fifth port 635 are all disposed on the first valve body 601. The first connecting member 602 is movably disposed in the first valve cavity and is used to control the connection between the first port 631 and the fifth port 635 and the connection between the second port 632 and the third port 633, or to control the connection between the first port 631 and the second port 632 and the connection between the third port 633 and the fourth port 634. The first valve body 601 has a sixth port 651 and a seventh port 652 on both sides along the moving direction of the first connecting member 602. A pilot valve 637 is used to control the connection between the first port 631 and one of the sixth port 651 and the seventh port 652, and the connection between the third port 633 and the other of the sixth port 651 and the seventh port 652, so as to drive the first connecting member 602 to move.

[0182] Understandably, the pilot valve 637 controls the connection between the first port 631 and one of the sixth port 651 and the seventh port 652, and the connection between the third port 633 and the other of the sixth port 651 and the seventh port 652. This allows the sixth port 651 and the seventh port 652 to achieve a pressure difference based on their connection status. The sixth port 651 and the seventh port 652 are located on opposite sides of the moving direction of the first connecting member 602. Thus, the pressure difference between the sixth port 651 and the seventh port 652 can drive the first connecting member 602 to move, thereby controlling the connection between the first port 631 and the fifth port 635, and the connection between the second port 632 and the third port 633, or controlling the connection between the first port 631 and the second port 632, and the connection between the third port 633 and the fourth port 634, to achieve the switching of the flow path of refrigerant into the five-way valve 636.

[0183] In some embodiments, such as Figure 5 , Figure 6 and Figure 7 As shown, the first connecting member 602 includes a movable member 603 and a communicating member 604. The movable member 603 is movably disposed in the first valve cavity. The movable member 603 includes a connecting shaft 605, a first partition 606 and a second partition 607. The connecting shaft 605 extends along the axial direction of the first valve body 601. The two ends of the connecting shaft 605 are respectively connected to the first partition 606 and the second partition 607. The outer peripheral walls of the first partition 606 and the second partition 607 are sealed to the first valve body 601. When the first partition 606 is spaced apart from the first valve body 601, it forms a first cavity, which communicates with the sixth port 651. When the second partition 607 is spaced apart from the first valve body 601, it forms a second cavity, which communicates with the seventh port 652. A third cavity is defined between the first partition 606 and the second partition 607.

[0184] The first port 631 communicates with the third cavity. The second port 632, the third port 633, the fourth port 634, and the fifth port 635 are always located between the first partition 606 and the second partition 607. The connecting member 604 is connected to the connecting shaft 605. The connecting member 604 includes a connecting part 608 and a stop part 609. The connecting part 608 forms a connecting cavity 653. There are two stop parts 609, which are located at both ends of the connecting part 608 along the axial direction of the connecting shaft 605. The stop parts 609 are sealed to the inner wall of the first valve body 601. The connecting shaft 605 is provided with two through ports 654, which are respectively located on both sides of the connecting member 604.

[0185] The connecting member 604 is movable. When the connecting cavity 653 connects to the second port 632 and the third port 633, the stop part 609 blocks the fourth port 634, and the first port 631 connects to the fifth port 635 through the through port 654. When the connecting cavity 653 connects to the third port 633 and the fourth port 634, the stop part 609 blocks the fifth port 635, and the first port 631 connects to the second port 632 through the through port 654. This allows for the switching of the connecting flow path, thereby enabling the change of the refrigerant flow path within the five-way valve 636. The structure is simple and easy to implement.

[0186] The pilot valve 637 controls the connection between the first port 631 and one of the sixth port 651 and the seventh port 652, and the connection between the third port 633 and the other of the sixth port 651 and the seventh port 652, so that the sixth port 651 and the seventh port 652 can achieve a pressure difference according to the connection status.

[0187] When the pressure at the sixth port 651 is less than the pressure at the seventh port 652, the moving member 603 moves toward the sixth port 651, and the second partition 607 is separated from the first valve body 601 to form a second chamber. At this time, the connecting member 604 moves with the moving member 603 toward the direction closer to the sixth port 651. When the connecting chamber 653 connects the second port 632 and the third port 633, the stop part 609 blocks the fourth port 634, and the first port 631 is connected to the fifth port 635 through the through port 654.

[0188] When the pressure at the sixth port 651 is greater than the pressure at the seventh port 652, the moving member 603 moves toward the seventh port 652. The first partition 606 is separated from the first valve body 601 to form a first cavity. At this time, the connecting member 604 moves with the moving member 603 toward the direction closer to the seventh port 652. The connecting cavity 653 connects the third port 633 and the fourth port 634. The stop part 609 blocks the fifth port 635. The first port 631 is connected to the second port 632 through the through port 654.

[0189] The following describes an air conditioner according to an embodiment of the present invention.

[0190] An air conditioner according to an embodiment of the present invention includes: the air conditioning system 300 described above.

[0191] According to the air conditioner of this utility model embodiment, by connecting the first connecting hole 13 on the body part 1 to one end of at least one first flow path 42, and the second connecting hole 14 on the body part 1 to one end of at least one second flow path 43, and by positioning the heat exchange tube 41 of the first flow path 42 connected to the first connecting hole 13 and the heat exchange tube 41 of the second flow path 43 connected to the second connecting hole 14 on opposite sides or in different rows in the thickness direction of the heat exchanger body 4, when the heat exchanger assembly 200 acts as a condenser, the refrigerant can flow in the heat exchange tube 41 in the same direction along the thickness direction of the heat exchanger body 4. This facilitates setting the position and orientation of the heat exchanger assembly 200 and controlling the flow direction of the airflow exchanging heat with the heat exchanger assembly 200, i.e., it facilitates the counter-current arrangement of the refrigerant and the heat exchange airflow. This allows the refrigerant and the heat exchange airflow to maintain a large temperature difference on the heat exchange tube 41, thereby maximizing the heat exchange efficiency of the heat exchange tube 41. This is beneficial to improving the heat exchange efficiency of the heat exchanger assembly 200, which in turn helps to improve the performance and energy efficiency of the air conditioning system 300 and the air conditioner.

[0192] Other components of the air conditioning system 300 according to embodiments of the present invention, such as the throttling device 64, the compressor 61, and the pilot valve 637, are known to those skilled in the art and will not be described in detail here.

[0193] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0194] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat exchanger assembly, characterized in that, include: A heat exchanger body having a plurality of heat exchange tubes forming at least one first flow path and at least one second flow path; The flow-diverting assembly includes a body and a flow-blocking component. The body has a first port, a second port, a first connecting hole, and a second connecting hole. The flow-blocking component is disposed on the body. Along the length of the body, the first port and the first connecting hole are located on the same side of the flow-blocking component, and the second port and the second connecting hole are located on the same side of the flow-blocking component. The first port and the second port are located on opposite sides of the flow-blocking component. The flow-blocking component only allows refrigerant to flow from the second port side to the first connecting hole side. The first connecting hole is connected to one end of at least one first flow path, and the second connecting hole is connected to one end of at least one second flow path. The heat exchange tubes are arranged in multiple rows along the thickness direction of the heat exchanger body. Both the first flow path and the second flow path include multiple rows of the heat exchange tubes. The heat exchange tubes in the first flow path connected to the first connecting hole and the heat exchange tubes in the second flow path connected to the second connecting hole are located on opposite sides of the thickness direction of the heat exchanger body or in different rows.

2. The heat exchanger assembly according to claim 1, characterized in that, The heat exchange tubes of the first flow path connected to the first connecting hole are located in a row on the leeward side of the heat exchanger body, and the heat exchange tubes of the second flow path connected to the second connecting hole are located in a row on the windward side of the heat exchanger body.

3. The heat exchanger assembly according to claim 2, characterized in that, The heat exchange tubes are arranged in multiple rows along the thickness direction of the heat exchanger body. The first flow path includes a row of windward heat exchange tubes located on the windward side of the heat exchanger body and a row of leeward heat exchange tubes located on the leeward side of the heat exchanger body. When the heat exchanger assembly is used as a condenser and as an evaporator, the refrigerant flowing into the first flow path first flows through the leeward heat exchange tubes and then through the windward heat exchange tubes. And / or, the heat exchange tubes are arranged in multiple rows along the thickness direction of the heat exchanger body, and the second flow path includes a row of windward heat exchange tubes located on the windward side of the heat exchanger body and a row of leeward heat exchange tubes located on the leeward side of the heat exchanger body. When the heat exchanger assembly is used as an evaporator, the refrigerant flowing into the second flow path first flows through the windward heat exchange tubes and then through the leeward heat exchange tubes. When the heat exchanger assembly is used as a condenser, the refrigerant flowing into the second flow path first flows through the leeward heat exchange tubes and then through the windward heat exchange tubes.

4. The heat exchanger assembly according to claim 1, characterized in that, The main body includes a manifold, which comprises a first manifold and a second manifold. The first port and the first connecting hole are disposed on the first manifold, and the second port and the second connecting hole are disposed on the second manifold. The first manifold and the second manifold are integral components, and the flow-blocking component is disposed inside the first manifold or the second manifold; Alternatively, the first manifold and the second manifold may be separate components, with the flow-blocking component connected between the first manifold and the second manifold.

5. The heat exchanger assembly according to claim 4, characterized in that, The inner diameter of the first manifold is less than or equal to the inner diameter of the second manifold.

6. The heat exchanger assembly according to claim 4, characterized in that, The end of the first manifold facing away from the flow-blocking component is open to form the first port; or The first port is located on the peripheral wall of the first manifold; or The first manifold includes a manifold body and a first tee pipe. A first end of the first tee pipe is connected to the flow-blocking component, a second end of the first tee pipe is connected to the manifold body, and a first port is located at the third end of the first tee pipe. The manifold body is provided with the first connecting hole; and / or The end of the second manifold facing away from the flow-blocking component is open to form the second port; or The second port is located on the peripheral wall of the second manifold.

7. The heat exchanger assembly according to claim 4, characterized in that, The first connecting hole is one or multiple holes spaced apart along the length of the first manifold. And / or, the second connecting hole is one or a plurality of holes spaced apart along the length of the second manifold.

8. The heat exchanger assembly according to claim 1, characterized in that, Also includes: The first branch pipe is connected to at least one of the first branch pipes at the first connecting hole; And / or, a second branch pipe, at least one of the second branch pipes is connected at the second connecting hole.

9. The heat exchanger assembly according to claim 8, characterized in that, The inner diameter of the second branch pipe is less than or equal to the inner diameter of the first branch pipe; and / or The area of ​​the second connecting hole is smaller than the area of ​​the first connecting hole.

10. The heat exchanger assembly according to claim 1, characterized in that, The main body includes a connecting pipe and a distributor. The flow-blocking component is disposed on the connecting pipe. The second port and the second connecting hole are connected to the connecting pipe. At least one of the second port and the second connecting hole is connected to one end of the connecting pipe. The distributor has a main interface and a plurality of distributing holes. The main interface is connected to the other end of the connecting pipe. At least some of the distributing holes are the first connecting holes.

11. The heat exchanger assembly according to claim 10, characterized in that, There are multiple first connecting holes, and each of the distribution holes is connected to a first branch pipe. The first port is located on the connecting pipe between the distributor and the flow-blocking component.

12. The heat exchanger assembly according to claim 10, characterized in that, The number of first connecting holes is multiple, the number of distribution holes is N, N-1 of the distribution holes are respectively connected to a first branch pipe, and the remaining distribution hole forms the first port.

13. The heat exchanger assembly according to claim 10, characterized in that, Along the length of the connecting pipe, the distance between the main inlet and the outlet end of the flow-blocking component is 15mm-500mm; and / or Along the length of the connecting pipe, the distance between the second connecting hole and the inlet end of the flow-blocking component is 15mm-100mm; and / or Along the length of the connecting pipe, the distance between the second connecting hole and the inlet end of the flow-blocking component is less than the distance between the main interface and the outlet end of the flow-blocking component.

14. The heat exchanger assembly according to any one of claims 1-13, characterized in that, The flow-blocking component is a one-way valve, a solenoid valve, or a baffle.

15. The heat exchanger assembly according to claim 1, characterized in that, Also includes: A flow collector assembly is disposed on one side of the heat exchanger body and is connected to multiple flow paths respectively, and the flow collector assembly has a third port.

16. The heat exchanger assembly according to claim 15, characterized in that, The flow collection assembly and the flow splitting assembly are located on the same side along the length of the heat exchanger body.

17. The heat exchanger assembly according to claim 15, characterized in that, The current collection component includes: The main pipe has a third port; A branch pipe, one end of which is connected to the main pipe, the inner diameter of the main pipe being greater than or equal to the inner diameter of the branch pipe, and there are multiple branch pipes, the ends of the multiple branch pipes facing away from the main pipe being respectively connected to the end of the first flow path away from the first connecting hole and the end of the second flow path away from the second connecting hole.

18. The heat exchanger assembly according to claim 17, characterized in that, When the heat exchanger assembly is used as an evaporator, the refrigerant flows into the heat exchanger assembly from the second port, and flows into the heat exchange tube of the heat exchanger assembly from the first connecting hole and the second connecting hole, and then flows out of the heat exchanger assembly from the third port. The flow-blocking component is open, and the first port is closed. When the heat exchanger assembly is used as a condenser, the refrigerant flows into the heat exchanger assembly from the first port, and then flows into the heat exchange tube of the heat exchanger assembly from the first connecting hole, and then flows out of the heat exchanger assembly from the second connecting hole and the second port in sequence. The flow-blocking component and the third port are both shut off.

19. The heat exchanger assembly according to claim 1, characterized in that, The number of the first connecting holes is multiple. When the heat exchanger assembly is used as an evaporator and when the heat exchanger assembly is used as a condenser, the multiple first connecting holes are used to distribute the refrigerant; and / or, the multiple first connecting holes are located above or diagonally above the flow-blocking component, and the multiple first connecting holes face horizontally, upward or diagonally upward.

20. The heat exchanger assembly according to claim 1, characterized in that, The first flow path is located above the second flow path; and / or The air volume or average wind speed flowing through the first flow path is greater than the air volume or average wind speed flowing through the second flow path.

21. An air conditioning system, characterized in that, include: The compressor has an exhaust port and an exhaust port; Indoor heat exchanger; The heat exchanger assembly according to any one of claims 1-20, wherein one end of the indoor heat exchanger is connected to the second port; A reversing assembly having a first port, a second port, a third port, a fourth port, and a fifth port, wherein the first port is connected to the exhaust port, the third port is connected to the return port, the second port is connected to the other end of the indoor heat exchanger, the fourth port is connected to the end of the first flow path away from the first connecting hole and the end of the second flow path away from the second connecting hole, and the fifth port is connected to the first port. The reversing assembly has a first switching state and a second switching state. When the commutation component is in the first switching state, the first port is connected to the fifth port, the second port is connected to the third port, and the fourth port is cut off; When the commutation component is in the second switching state, the first port is connected to the second port, the third port is connected to the fourth port, and the fifth port is cut off.

22. An air conditioner, characterized in that, Including the air conditioning system according to claim 21.

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