Outdoor unit and air conditioning system

Abstract

The application relates to an outdoor unit and an air conditioning system. The outdoor unit comprises a support, a heat exchanger assembly and a fan. The heat exchanger assembly is fixedly connected with the support. The heat exchanger assembly comprises a first heat exchanger and a second heat exchanger. The first heat exchanger and the second heat exchanger are oppositely arranged along a first direction. The fan is fixedly connected with the support and located at the top of the heat exchanger assembly. The first heat exchanger comprises a main body part and a first extension part. The first extension part is located at one end of the main body part along a second direction. The first extension part is connected with the main body part. The plane where the first extension part is located intersects the plane where the main body part is located. The outdoor unit in the application has more than two air return surfaces. Thus, the heat exchanger assembly can have a larger heat exchange area, thereby improving the heat exchange efficiency of the outdoor unit. In the case of improving the heat exchange efficiency of a single outdoor unit, the number of outdoor units in the air conditioning system can be appropriately reduced. Thus, the cost of the air conditioning system can be reduced.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to an outdoor unit and an air conditioning system. Background Technology

[0002] Some air conditioning systems in related technologies have multiple outdoor units connected in parallel to meet the large cooling capacity requirements of certain locations, such as data centers, shopping malls, and hospitals. These systems are more expensive due to the large number of outdoor units. Furthermore, the multiple outdoor units in these systems are typically located on the roof of the building, occupying significant rooftop space. Utility Model Content

[0003] This application provides an outdoor unit and an air conditioning system, which aims to reduce the cost of the air conditioning system and reduce the space occupied by multiple outdoor units connected in parallel.

[0004] The specific technical solution is as follows: An embodiment of the first aspect of this application provides an outdoor unit, which includes a bracket, a heat exchanger assembly, and a fan. The heat exchanger assembly is fixedly connected to the bracket and includes a first heat exchanger and a second heat exchanger, which are arranged opposite to each other along a first direction. The fan is fixedly connected to the bracket and located at the top of the heat exchanger assembly. The first heat exchanger includes a main body and a first extension, which is located at one end of the main body along a second direction and connected to the main body. The plane of the first extension intersects the plane of the main body, and the first direction, the second direction, and the height direction of the bracket are perpendicular to each other.

[0005] The outdoor unit in this embodiment can be applied to an air conditioning system with multiple outdoor units connected in parallel. The heat exchanger assembly includes a first heat exchanger and a second heat exchanger arranged opposite each other along a first direction. The first heat exchanger includes a main body and a first extension. The first extension is located at one end of the main body along a second direction and is connected to the main body. The plane of the first extension intersects the plane of the main body. This arrangement results in more than two return air surfaces for the outdoor unit; that is, two return air surfaces are formed on opposite sides of the outdoor unit along the first direction, and one return air surface is formed on the side where the first extension is located. This allows the heat exchanger assembly to obtain a larger heat exchange area, thereby improving the heat exchange efficiency of the outdoor unit. With the improved heat exchange efficiency of a single outdoor unit, the number of outdoor units in the air conditioning system can be appropriately reduced, thereby reducing the cost of the air conditioning system. Furthermore, reducing the number of outdoor units in the air conditioning system also brings beneficial effects such as reducing the space occupied by multiple outdoor units connected in parallel and reducing the wind resistance of multiple outdoor units connected in parallel.

[0006] In some embodiments, the plane containing the first extension is perpendicular to the plane containing the main body.

[0007] This design gives the heat exchange components a more regular shape, which helps to make the arrangement of multiple outdoor units more compact when they are connected in parallel, thus reducing the space occupied by multiple outdoor units connected in parallel.

[0008] In some embodiments, the plane of the main body is parallel to the height direction of the support, the second heat exchanger is constructed as a flat plate, and the angle between the plane of the second heat exchanger and the height direction of the support is greater than or equal to 10°.

[0009] This allows for a relatively large return air space between adjacent outdoor units, ensuring sufficient outside air continuously passes through the return air surface for each unit during operation. This reduces the distance between adjacent outdoor units while meeting return air requirements, improving the compactness of the multi-unit layout. Furthermore, since the inclined arrangement of the second heat exchanger creates a relatively large return air space between the two outdoor units, and by aligning the main body of the first heat exchanger parallel to the height of the bracket, the installation difficulty of the first heat exchanger on the bracket is reduced, thereby improving the assembly efficiency of the outdoor units.

[0010] In some embodiments, the outdoor unit further includes a system component fixedly connected to the bracket, the system component being located on the side of the second heat exchanger away from the first heat exchanger along the first direction.

[0011] With the second heat exchanger arranged at an angle relative to the vertical direction, a wedge-shaped accommodating space is formed on the side of the second heat exchanger away from the first heat exchanger. Placing the system components within this accommodating space improves space utilization. Furthermore, placing the system components on one side of the second heat exchanger in this embodiment helps reduce the overall height of the outdoor unit, thus reducing the amount of material needed for the support frame and lowering costs. It also helps reduce the wind resistance of the outdoor unit.

[0012] In some embodiments, the outdoor unit further includes a first inlet pipe and a second inlet pipe. The first inlet pipe includes a first main pipe and a plurality of first branch pipes connected to the first main pipe, and the plurality of first branch pipes are connected to the first heat exchanger. The second inlet pipe includes a second main pipe and a plurality of second branch pipes connected to the second main pipe, and the plurality of second branch pipes are connected to the second heat exchanger. The diameter of the first main pipe is larger than the diameter of the second main pipe, and the diameter of the first branch pipe is larger than the diameter of the second branch pipe.

[0013] The first heat exchanger includes a main body and a first extension, such that the size of the first heat exchanger is larger than that of the second heat exchanger. Therefore, the diameter of the first main pipe is larger than that of the second main pipe, and the diameter of the first branch pipe is larger than that of the second branch pipe. As a result, the flow rate of the first inlet pipe is greater than that of the second inlet pipe. In this way, the flow rates of the first and second inlet pipes are matched with the sizes of the first and second heat exchangers, thereby avoiding the problem of uneven refrigerant flow caused by the difference in size between the first and second heat exchangers.

[0014] In some embodiments, the outdoor unit further includes a first outlet pipe and a second outlet pipe. The first outlet pipe includes a third main pipe and a plurality of third branch pipes connected to the third main pipe, and the plurality of third branch pipes are connected to the first heat exchanger. The second outlet pipe includes a fourth main pipe and a plurality of fourth branch pipes connected to the fourth main pipe, and the plurality of fourth branch pipes are connected to the second heat exchanger. The diameter of the third main pipe is larger than the diameter of the fourth main pipe, and the diameter of the third branch pipe is larger than the diameter of the fourth branch pipe.

[0015] With the flow rate of the first inlet pipe greater than that of the second inlet pipe, the diameter of the third main pipe is greater than that of the fourth main pipe, and the diameter of the third branch pipe is greater than that of the fourth branch pipe. Consequently, the flow rate of the first outlet pipe is greater than that of the second outlet pipe. This ensures that the flow rates of the first and second outlet pipes are matched with the flow rates of the first and second inlet pipes, respectively. This configuration matches the flow rates of the first inlet and first outlet pipes to the first heat exchanger, and the flow rates of the second inlet and second outlet pipes to the second heat exchanger.

[0016] In some embodiments, the heat exchanger assembly further includes a first connecting plate and a second connecting plate, which are disposed opposite to each other along a second direction. The first connecting plate is connected to both the first heat exchanger and the second heat exchanger, and the second connecting plate is connected to both the first heat exchanger and the second heat exchanger. The first heat exchanger, the second heat exchanger, the first connecting plate, and the second connecting plate together define an air outlet cavity, and the inlet of the fan communicates with the air outlet cavity.

[0017] The first connecting plate is connected to both the first and second heat exchangers, and the second connecting plate is also connected to both heat exchangers, forming a single integrated structure that improves the structural strength and rigidity of the heat exchanger assembly. Furthermore, the first and second heat exchangers, the first and second connecting plates together define an air cavity. The fan inlet is connected to the air cavity. When the fan operates, air outside the air cavity can pass through the first and second heat exchangers into the air cavity, where it exchanges heat with the refrigerant passing through the first and second heat exchangers. The air that has completed heat exchange is then discharged outside the air cavity by the fan, achieving airflow circulation inside and outside the air cavity.

[0018] In some embodiments, the first heat exchanger further includes a second extension, the first extension and the second extension being disposed opposite to each other along the second direction; the first connecting plate is connected to the first extension, and the second connecting plate is connected to the second extension.

[0019] The first heat exchanger consists of three parts: a main body, a first extension, and a second extension. The first heat exchanger is constructed in a U-shape. In this case, the outdoor unit has four return air surfaces, which can achieve higher heat exchange efficiency compared to outdoor units with two return air surfaces in related technologies.

[0020] In some embodiments, the outdoor unit further includes an electrical control box, which is fixedly connected to the second connecting plate; the first extension has a dimension L1 in the direction perpendicular to the main body, and the second extension has a dimension L2 in the direction perpendicular to the main body, wherein L2 < L1.

[0021] When the first heat exchanger is constructed in a U-shape, the dimension L2 of the second extension in the direction perpendicular to the main body is smaller than the dimension L1 of the first extension in the direction perpendicular to the main body. This makes the dimension of the second connecting plate larger than the dimension of the first connecting plate. Based on this, the electrical control box is mounted on the second connecting plate, making it less likely for the electrical control box to cause structural interference with the first heat exchanger.

[0022] In some embodiments, the first connecting plate is connected to the first extension, and the second connecting plate is connected to the main body.

[0023] In other words, the first heat exchanger consists of two parts: a main body and a first extension. The first heat exchanger is constructed in an L-shape. In this case, the outdoor unit has three return air surfaces, which can achieve higher heat exchange efficiency compared to outdoor units with two return air surfaces in related technologies.

[0024] In some embodiments, the outdoor unit further includes an electrical control box, which is fixedly connected to the second connecting plate.

[0025] Since the first connecting plate is connected to the first extension and the second connecting plate is connected to the main body, the size of the second connecting plate is larger than that of the first connecting plate. Based on this, the electrical control box is installed on the second connecting plate, making it less likely for the electrical control box to cause structural interference with the first heat exchanger.

[0026] In some embodiments, the second connecting plate is provided with a mounting port, a portion of the electrical control box is located outside the air cavity, and another portion of the electrical control box extends into the air cavity through the mounting port.

[0027] This configuration allows for airflow within the ventilation cavity to cool the control box, thus ensuring its operational stability. In this case, no additional heat dissipation structure is needed for the control box, which also helps reduce its size.

[0028] In some embodiments, the plane containing the first extension is perpendicular to the plane containing the main body, and the dimension of the first extension in the direction perpendicular to the main body is less than half the dimension of the main body in the second direction.

[0029] This helps to avoid the heat exchanger assembly being too large in the first direction, thus helping to avoid the outdoor unit being too large and taking up too much space.

[0030] An embodiment of the second aspect of this application provides an air conditioning system, the air conditioning system including an outdoor unit as described in any of the above embodiments, wherein the number of outdoor units is multiple and they are connected in parallel.

[0031] The air conditioning system in this embodiment includes multiple outdoor units connected in parallel. Each outdoor unit has a heat exchanger assembly comprising a first heat exchanger and a second heat exchanger arranged opposite each other along a first direction. The first heat exchanger includes a main body and a first extension. The first extension is located at one end of the main body along a second direction and is connected to the main body. The plane of the first extension intersects the plane of the main body. This arrangement results in more than two return air surfaces for the outdoor unit; that is, two return air surfaces are formed on opposite sides of the outdoor unit along the first direction, and one return air surface is formed on the side where the first extension is located. This allows the heat exchanger assembly to obtain a larger heat exchange area, thereby improving the heat exchange efficiency of the outdoor unit. With the improved heat exchange efficiency of a single outdoor unit, the number of outdoor units in the air conditioning system can be appropriately reduced, thereby reducing the cost of the air conditioning system. Furthermore, reducing the number of outdoor units in the air conditioning system also brings beneficial effects such as reducing the space occupied by multiple outdoor units connected in parallel and reducing the wind resistance of multiple outdoor units connected in parallel. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of an air conditioning system provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of an outdoor unit provided in an embodiment of this application; Figure 3 A schematic diagram of the outdoor unit provided in one embodiment of this application from another perspective; Figure 4 A schematic diagram showing the positional relationship between a first heat exchanger and a second heat exchanger, provided for an embodiment of this application; Figure 5 This is a front view of an outdoor unit provided in an embodiment of this application; Figure 6 for Figure 5 An enlarged schematic diagram of part A in the middle; Figure 7 This is a rear view of an outdoor unit provided in an embodiment of this application; Figure 8 A bottom view of a first heat exchanger provided in an embodiment of this application; Figure 9 This is a schematic diagram of the structure of a first heat exchanger provided for another embodiment of this application.

[0034] Explanation of icon numbers: 100. Air conditioning system; 1. Outdoor unit; 10. Bracket; 20. Heat exchanger assembly; 21. First heat exchanger; 211. Main body; 212. First extension; 213. Second extension; 22. Second heat exchanger; 23. First connecting plate; 24. Second connecting plate; 30. Fan; 40. System components; 41. Refrigerant receiver tank; 42. Refrigerant pump; 50. Electrical control box; 61. First inlet pipe; 611. First main pipe; 612. First branch pipe; 62. Second inlet pipe; 621. Second main pipe; 622. Second branch pipe; 63. First outlet pipe; 631. Third main pipe; 632. Third branch pipe; 64. Second outlet pipe; 641. Fourth main pipe; 642. Fourth branch pipe.

[0035] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0037] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0038] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, an embodiment of the first aspect of this application provides an outdoor unit 1, which includes a bracket 10, a heat exchanger assembly 20, and a fan 30. The heat exchanger assembly 20 is fixedly connected to the bracket 10 and includes a first heat exchanger 21 and a second heat exchanger 22. The first heat exchanger 21 and the second heat exchanger 22 are arranged opposite to each other along a first direction. The fan 30 is fixedly connected to the bracket 10 and located at the top of the heat exchanger assembly 20. The first heat exchanger 21 includes a main body 211 and a first extension 212. The first extension 212 is located at one end of the main body 211 along a second direction and is connected to the main body 211. The plane of the first extension 212 intersects the plane of the main body 211, and the first direction, the second direction, and the height direction of the bracket 10 are perpendicular to each other.

[0039] Specifically, bracket 10 serves as the fixed frame for outdoor unit 1, providing an installation foundation for the various structural components of outdoor unit 1. Bracket 10 can be fixed to the top of the building, thus securing outdoor unit 1. To meet strength and rigidity requirements, bracket 10 can be made of metal. The heat exchanger assembly 20 includes a first heat exchanger 21 and a second heat exchanger 22. When outdoor unit 1 is used in air conditioning system 100, refrigerant can pass through the first heat exchanger 21 and the second heat exchanger 22, exchanging heat with outside air at these locations. Exemplarily, the first heat exchanger 21 and the second heat exchanger 22 are condensers. Fan 30 drives air movement to form an airflow that passes through the first heat exchanger 21 and the second heat exchanger 22, thereby exchanging heat with the refrigerant passing through the first heat exchanger 21 and the second heat exchanger 22.

[0040] It is understood that the first heat exchanger 21 includes a main body 211 and a first extension 212 connected to the main body 211. When the outdoor unit 1 is working, the refrigerant passes through both the main body 211 and the first extension 212. Similarly, outside air passes through both the main body 211 and the first extension 212. In other words, the refrigerant can exchange heat with the air at both the main body 211 and the first extension 212.

[0041] Outdoor units in related technologies typically adopt a double-sided return air configuration. That is, when the first heat exchanger and the second heat exchanger are arranged opposite each other along a first direction, the opposite sides of the outdoor unit along the first direction are constructed as return air surfaces. When the outdoor unit is working, outside air enters the interior of the outdoor unit through the return air surfaces and is then exhausted by the fan.

[0042] The outdoor unit 1 in this embodiment can be applied to an air conditioning system 100 with multiple parallel outdoor units 1. The heat exchanger assembly 20 includes a first heat exchanger 21 and a second heat exchanger 22 arranged opposite each other along a first direction. The first heat exchanger 21 includes a main body 211 and a first extension 212. The first extension 212 is located at one end of the main body 211 along a second direction and is connected to the main body 211. The plane of the first extension 212 intersects the plane of the main body 211. This arrangement results in the outdoor unit 1 having more than two return air surfaces; that is, the two opposite sides of the outdoor unit 1 along the first direction form two return air surfaces, and the side where the first extension 212 is located forms one return air surface. This allows the heat exchanger assembly 20 to obtain a larger heat exchange area, thereby improving the heat exchange efficiency of the outdoor unit 1. With the improvement of the heat exchange efficiency of a single outdoor unit 1, the number of outdoor units 1 in the air conditioning system 100 can be appropriately reduced. This can reduce the cost of the air conditioning system 100. At the same time, reducing the number of outdoor units 1 in the air conditioning system 100 can also bring beneficial effects such as reducing the space occupied by multiple outdoor units 1 connected in parallel and reducing the wind resistance of multiple outdoor units 1 connected in parallel.

[0043] like Figure 2 , Figure 4 As shown, in some embodiments, the plane where the first extension 212 is located is perpendicular to the plane where the main body 211 is located. This arrangement gives the heat exchange assembly a more regular shape, which is beneficial for arranging multiple outdoor units 1 in parallel, thereby reducing the space occupied by multiple outdoor units 1 after parallel connection.

[0044] like Figure 2 , Figure 4 As shown, in some embodiments, the plane of the main body 211 is parallel to the height direction of the support 10, the second heat exchanger 22 is constructed as a flat plate, and the angle between the plane of the second heat exchanger 22 and the height direction of the support 10 is greater than or equal to 10°.

[0045] In the case of multiple outdoor units 1 connected in parallel, the second heat exchanger 22 of one of the adjacent outdoor units 1 can be arranged adjacent to the first heat exchanger 21 of the other outdoor unit 1. Furthermore, the angle between the plane of the second heat exchanger 22 and the height direction of the bracket 10 is greater than or equal to 10°, meaning the second heat exchanger 22 is arranged at an angle relative to the vertical direction. This allows for a relatively large return air space between adjacent outdoor units 1, ensuring that each outdoor unit 1 has sufficient outside air continuously passing through the return air surface during operation. Thus, while meeting return air requirements, the arrangement distance between adjacent outdoor units 1 can be reduced, improving the compactness of the layout of multiple outdoor units 1.

[0046] In addition, since the second heat exchanger 22 is tilted, a relatively large return air space can be formed between the two outdoor units 1. Based on this, the main body 211 of the first heat exchanger 21 is set to be parallel to the height direction of the bracket 10. This reduces the difficulty of installing the first heat exchanger 21 on the bracket 10, thereby improving the assembly efficiency of the outdoor unit 1.

[0047] like Figure 2 , Figure 3 as well as Figure 7 As shown, in one embodiment, the outdoor unit 1 further includes a system component 40, which is fixedly connected to the bracket 10 and is located on the side of the second heat exchanger 22 away from the first heat exchanger 21 along a first direction.

[0048] For example, system component 40 may include refrigerant receiver 41, refrigerant pump 42, etc. Of course, system component 40 may also include other necessary functional components on outdoor unit 1.

[0049] When the second heat exchanger 22 is arranged at an angle relative to the vertical direction, a wedge-shaped accommodating space is formed on the side of the second heat exchanger 22 away from the first heat exchanger 21. The system component 40 is placed in this accommodating space, which can improve the space utilization rate.

[0050] In addition, some outdoor units in related technologies place system components below the heat exchanger assembly. Compared with the arrangement in related technologies, this embodiment places system component 40 on one side of the second heat exchanger 22, which helps to reduce the overall height of the outdoor unit 1. This reduces the amount of material used in the bracket 10, thereby reducing costs, and also helps to reduce the wind resistance of the outdoor unit 1.

[0051] like Figure 5 , Figure 6 As shown, in one embodiment, the outdoor unit 1 further includes a first inlet pipe 61 and a second inlet pipe 62. The first inlet pipe 61 includes a first main pipe 611 and a plurality of first branch pipes 612 connected to the first main pipe 611, and the plurality of first branch pipes 612 are connected to the first heat exchanger 21. The second inlet pipe 62 includes a second main pipe 621 and a plurality of second branch pipes 622 connected to the second main pipe 621, and the plurality of second branch pipes 622 are connected to the second heat exchanger 22. The diameter of the first main pipe 611 is larger than the diameter of the second main pipe 621, and the diameter of the first branch pipes 612 is larger than the diameter of the second branch pipes 622.

[0052] The first inlet pipe 61 is used to introduce refrigerant into the first heat exchanger 21. The refrigerant can enter the first heat exchanger 21 through the first main pipe 611 and each of the first branch pipes 612 connected to the first main pipe 611. The second inlet pipe 62 is used to introduce refrigerant into the second heat exchanger 22. The refrigerant can enter the second heat exchanger 22 through the second main pipe 621 and each of the second branch pipes 622 connected to the second main pipe 621.

[0053] The first heat exchanger 21 includes a main body 211 and a first extension 212, such that the size of the first heat exchanger 21 is larger than that of the second heat exchanger 22. Therefore, the diameter of the first main pipe 611 is larger than that of the second main pipe 621, and the diameter of the first branch pipe 612 is larger than that of the second branch pipe 622. As a result, the flow rate of the first inlet pipe 61 is greater than that of the second inlet pipe 62. In this way, the flow rates of the first inlet pipe 61 and the second inlet pipe 62 are matched with the sizes of the first heat exchanger 21 and the second heat exchanger 22, thereby avoiding the problem of uneven refrigerant flow caused by the difference in size between the first heat exchanger 21 and the second heat exchanger 22.

[0054] like Figure 5 , Figure 6 As shown, in one embodiment, the outdoor unit 1 further includes a first outlet pipe 63 and a second outlet pipe 64. The first outlet pipe 63 includes a third main pipe 631 and a plurality of third branch pipes 632 connected to the third main pipe 631, and the plurality of third branch pipes 632 are connected to the first heat exchanger 21. The second outlet pipe 64 includes a fourth main pipe 641 and a plurality of fourth branch pipes 642 connected to the fourth main pipe 641, and the plurality of fourth branch pipes 642 are connected to the second heat exchanger 22. The diameter of the third main pipe 631 is larger than the diameter of the fourth main pipe 641, and the diameter of the third branch pipes 632 is larger than the diameter of the fourth branch pipes 642.

[0055] With the flow rate of the first inlet pipe 61 greater than that of the second inlet pipe 62, the diameter of the third main pipe 631 is made greater than that of the fourth main pipe 641, and the diameter of the third branch pipe 632 is made greater than that of the fourth branch pipe 642. Consequently, the flow rate of the first outlet pipe 63 is greater than that of the second outlet pipe 64. This ensures that the flow rates of the first outlet pipe 63 and the second outlet pipe 64 are matched with the flow rates of the first inlet pipe 61 and the second inlet pipe 62, respectively. This configuration matches the flow rates of the first inlet pipe 61 and the first outlet pipe 63 with those of the first heat exchanger 21, and the flow rates of the second inlet pipe 62 and the second outlet pipe 64 with those of the second heat exchanger 22.

[0056] like Figure 2 , Figure 3As shown, in some embodiments, the heat exchanger assembly 20 further includes a first connecting plate 23 and a second connecting plate 24, which are arranged opposite to each other along a second direction. The first connecting plate 23 is connected to both the first heat exchanger 21 and the second heat exchanger 22, and the second connecting plate 24 is also connected to both the first heat exchanger 21 and the second heat exchanger 22. The first heat exchanger 21, the second heat exchanger 22, the first connecting plate 23, and the second connecting plate 24 together define an air outlet cavity, and the inlet of the fan 30 communicates with the air outlet cavity.

[0057] The first connecting plate 23 is connected to both the first heat exchanger 21 and the second heat exchanger 22, and the second connecting plate 24 is connected to both the first heat exchanger 21 and the second heat exchanger 22, so that the first heat exchanger 21, the second heat exchanger 22, the first connecting plate 23 and the second connecting plate 24 form an integral structure, which can improve the structural strength and rigidity of the heat exchanger assembly 20.

[0058] Furthermore, the first heat exchanger 21, the second heat exchanger 22, the first connecting plate 23, and the second connecting plate 24 together define the air cavity. The inlet of the fan 30 is connected to the air cavity. Thus, when the fan 30 is working, air outside the air cavity can pass through the first heat exchanger 21 and the second heat exchanger 22 into the air cavity, where it exchanges heat with the refrigerant passing through the first heat exchanger 21 and with the refrigerant passing through the second heat exchanger 22. The air that has completed the heat exchange is then discharged outside the air cavity by the fan 30, thereby achieving airflow circulation inside and outside the air cavity.

[0059] Furthermore, the first heat exchanger 21 and the second heat exchanger 22 are both connected to the bracket 10, and / or the first connecting plate 23 and the second connecting plate 24 are both connected to the bracket 10, thereby enabling the heat exchanger assembly 20 to be installed and fixed to the bracket 10.

[0060] like Figure 2 , Figure 4 As shown, in some embodiments, the first heat exchanger 21 further includes a second extension 213, the first extension 212 and the second extension 213 are arranged opposite to each other along a second direction, the first connecting plate 23 is connected to the first extension 212, and the second connecting plate 24 is connected to the second extension 213.

[0061] When the outdoor unit 1 is working, the refrigerant passes through the main body 211, the first extension 212 and the second extension 213, and the outside air passes through the main body 211, the first extension 212 and the second extension 213. In other words, the refrigerant can exchange heat with the air at the main body 211, the first extension 212 and the second extension 213.

[0062] The first heat exchanger 21 consists of three parts: a main body 211, a first extension 212, and a second extension 213. The first heat exchanger 21 is constructed in a U-shape. In this case, the outdoor unit 1 has four return air surfaces, which can achieve higher heat exchange efficiency compared to outdoor units with two return air surfaces in related technologies.

[0063] like Figure 2 , Figure 4 as well as Figure 8 As shown, in one embodiment, the outdoor unit 1 further includes an electrical control box 50, which is fixedly connected to the second connecting plate 24. The first extension 212 has a dimension of L1 in the direction perpendicular to the main body 211, and the second extension 213 has a dimension of L2 in the direction perpendicular to the main body 211, wherein L2 < L1.

[0064] When the first heat exchanger 21 is constructed in a U-shape, the dimension L2 of the second extension 213 in the direction perpendicular to the main body 211 is smaller than the dimension L1 of the first extension 212 in the direction perpendicular to the main body 211. This makes the dimension of the second connecting plate 24 larger than the dimension of the first connecting plate 23. Based on this, the electrical control box 50 is installed on the second connecting plate 24, making it less likely for the electrical control box 50 to cause structural interference with the first heat exchanger 21.

[0065] like Figure 9 As shown, in some embodiments, the first connecting plate 23 is connected to the first extension 212, and the second connecting plate 24 is connected to the main body 211. That is, the first heat exchanger 21 is composed of two parts: the main body 211 and the first extension 212. The first heat exchanger 21 is constructed in an L-shape. In this case, the outdoor unit 1 has three return air surfaces, which can achieve higher heat exchange efficiency compared to outdoor units with two return air surfaces in related technologies.

[0066] like Figure 2 , Figure 7 As shown, in one embodiment, the outdoor unit 1 further includes an electrical control box 50, which is fixedly connected to the second connecting plate 24. Since the first connecting plate 23 is connected to the first extension 212 and the second connecting plate 24 is connected to the main body 211, the size of the second connecting plate 24 is larger than that of the first connecting plate 23. Based on this, the electrical control box 50 is installed on the second connecting plate 24, making it less likely for the electrical control box 50 to cause structural interference with the first heat exchanger 21.

[0067] In one embodiment, the second connecting plate 24 is provided with a mounting port (not shown in the figure), a part of the structure of the electrical control box 50 is outside the air cavity, and another part of the structure of the electrical control box 50 extends into the air cavity through the mounting port.

[0068] This configuration allows for airflow within the ventilation cavity to cool the control box 50, thus ensuring its operational stability. In this case, no additional heat dissipation structure is needed for the control box 50, which also helps reduce its size.

[0069] like Figure 4 , Figure 8 As shown, in some embodiments, the plane where the first extension 212 is located is perpendicular to the plane where the main body 211 is located, and the dimension of the first extension 212 in the direction perpendicular to the main body 211 is less than half the dimension of the main body 211 in the second direction.

[0070] The dimension of the first extension 212 in the direction perpendicular to the main body 211 is less than half the dimension of the main body 211 in the second direction. This helps to avoid the heat exchanger assembly 20 being too large in the first direction, thereby helping to avoid the outdoor unit 1 being too large and occupying too much space.

[0071] like Figures 1 to 9 As shown, an embodiment of the second aspect of this application provides an air conditioning system 100, which includes an outdoor unit 1 as described in any of the above embodiments, and the number of outdoor units 1 is multiple and connected in parallel.

[0072] The air conditioning system 100 in this embodiment includes multiple outdoor units 1 connected in parallel. The heat exchanger assembly 20 in each outdoor unit 1 includes a first heat exchanger 21 and a second heat exchanger 22 arranged opposite each other along a first direction. The first heat exchanger 21 includes a main body 211 and a first extension 212. The first extension 212 is located at one end of the main body 211 along a second direction and is connected to the main body 211. The plane of the first extension 212 intersects the plane of the main body 211. This arrangement results in more than two return air surfaces for the outdoor unit 1; that is, two return air surfaces are formed on opposite sides of the outdoor unit 1 along the first direction, and one return air surface is formed on the side where the first extension 212 is located. This allows the heat exchanger assembly 20 to obtain a larger heat exchange area, thereby improving the heat exchange efficiency of the outdoor unit 1. With the improvement of the heat exchange efficiency of a single outdoor unit 1, the number of outdoor units 1 in the air conditioning system 100 can be appropriately reduced. This can reduce the cost of the air conditioning system 100. At the same time, reducing the number of outdoor units 1 in the air conditioning system 100 can also bring beneficial effects such as reducing the space occupied by multiple outdoor units 1 connected in parallel and reducing the wind resistance of multiple outdoor units 1 connected in parallel. The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An outdoor unit characterized by comprising: include: support; A heat exchanger assembly, which is fixedly connected to the bracket, includes a first heat exchanger and a second heat exchanger, which are arranged opposite to each other along a first direction; A fan, which is fixedly connected to the bracket and located at the top of the heat exchanger assembly; The first heat exchanger includes a main body and a first extension. The first extension is located at one end of the main body along a second direction. The first extension is connected to the main body. The plane of the first extension intersects the plane of the main body. The first direction, the second direction, and the height direction of the support are perpendicular to each other.

2. The outdoor unit according to claim 1, characterized by The plane containing the first extension is perpendicular to the plane containing the main body.

3. The outdoor unit according to claim 2, characterized by The plane of the main body is parallel to the height direction of the support, the second heat exchanger is constructed as a flat plate, and the angle between the plane of the second heat exchanger and the height direction of the support is greater than or equal to 10°.

4. The outdoor unit according to claim 3, characterized by The outdoor unit also includes a system component, which is fixedly connected to the bracket and is located on the side of the second heat exchanger away from the first heat exchanger along the first direction.

5. The outdoor unit according to claim 3, wherein The outdoor unit also includes a first inlet pipe and a second inlet pipe. The first inlet pipe includes a first main pipe and a plurality of first branch pipes connected to the first main pipe. The plurality of first branch pipes are connected to the first heat exchanger. The second inlet pipe includes a second main pipe and a plurality of second branch pipes connected to the second main pipe, and the plurality of second branch pipes are connected to the second heat exchanger; Wherein, the diameter of the first main pipe is larger than the diameter of the second main pipe, and the diameter of the first branch pipe is larger than the diameter of the second branch pipe.

6. The outdoor unit according to claim 5, characterized by The outdoor unit also includes a first outlet pipe and a second outlet pipe. The first outlet pipe includes a third main pipe and a plurality of third branch pipes connected to the third main pipe. The plurality of third branch pipes are connected to the first heat exchanger. The second outlet pipe includes a fourth main pipe and a plurality of fourth branch pipes connected to the fourth main pipe, and the plurality of fourth branch pipes are connected to the second heat exchanger; The diameter of the third main pipe is larger than that of the fourth main pipe, and the diameter of the third branch pipe is larger than that of the fourth branch pipe.

7. The outdoor unit according to claim 1, characterized by The heat exchanger assembly further includes a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate being arranged opposite to each other along a second direction, the first connecting plate being connected to both the first heat exchanger and the second heat exchanger, and the second connecting plate being connected to both the first heat exchanger and the second heat exchanger. The first heat exchanger, the second heat exchanger, the first connecting plate, and the second connecting plate together define the air outlet cavity, and the inlet of the fan is connected to the air outlet cavity.

8. The outdoor unit according to claim 7, characterized by The first heat exchanger further includes a second extension, and the first extension and the second extension are disposed opposite to each other along the second direction; The first connecting plate is connected to the first extension, and the second connecting plate is connected to the second extension.

9. The outdoor unit according to claim 8, characterized by The outdoor unit also includes an electrical control box, which is fixedly connected to the second connecting plate; The first extension has a dimension of L1 in the direction perpendicular to the main body, and the second extension has a dimension of L2 in the direction perpendicular to the main body, wherein L2 < L1.

10. The outdoor unit according to claim 7, characterized by The first connecting plate is connected to the first extension, and the second connecting plate is connected to the main body.

11. The outdoor unit according to claim 10, characterized by The outdoor unit also includes an electrical control box, which is fixedly connected to the second connecting plate.

12. The outdoor unit according to claim 9 or 11, characterized by The second connecting plate is provided with an installation port. A part of the structure of the electrical control box is outside the air cavity, and another part of the structure of the electrical control box extends into the air cavity through the installation port.

13. The outdoor unit according to claim 1, characterized by The plane containing the first extension is perpendicular to the plane containing the main body, and the dimension of the first extension in the direction perpendicular to the main body is less than half the dimension of the main body in the second direction.

14. An air conditioning system characterized by, The outdoor unit includes any one of claims 1 to 13, wherein the number of outdoor units is multiple and they are connected in parallel.

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