Heat exchange components and air conditioning units

Abstract

This invention provides a heat exchange component and an air conditioning unit. The heat exchange component includes two liquid distribution structures; at least two heat exchange tube assemblies; and a bypass component. A bypass component is provided between each pair of adjacent heat exchange tube assemblies, and all heat exchange tube assemblies are connected in series through corresponding bypass components. The heat exchange component and air conditioning unit provided by this invention, by providing bypass components, enable the heat exchange tube assemblies to be connected in series, allowing the refrigerant to pass through at least two heat exchange tube assemblies sequentially. This improves the flow path of the refrigerant within the heat exchange component, thereby enhancing the cooling heat exchange effect. Simultaneously, the bypass component can be closed to maintain the heat exchange tube assemblies in parallel, improving the heating heat exchange effect. In other words, the heat exchange component can simultaneously meet different heat exchange modes of the heat pump air conditioning system, thus ensuring the heat exchange efficiency of the heat pump air conditioning system.

Description

Technical Field

[0001] This invention relates to the field of heat exchange equipment technology, and in particular to a heat exchange component and an air conditioning unit. Background Technology

[0002] Heat pump air conditioning systems have two different operating modes: cooling and heating. The operating flow paths in the air conditioning system are opposite in these two modes, but both require the use of heat exchangers for heat exchange. This means that when designing the heat exchange flow path of the condenser, technicians often have to design the flow path according to the unit's cooling or heating focus. This allows the heat pump air conditioning system to effectively improve heat exchange efficiency in its preferred cooling or heating mode. However, in the opposite operating mode, the heat exchange efficiency of the heat pump air conditioning system is very low, which seriously affects the heat exchange effect of the heat pump air conditioning system. Summary of the Invention

[0003] To address the technical problem of poor heat exchange performance in existing heat pump air conditioning systems, a heat exchange component and air conditioning unit are provided that utilizes a bypass component to connect heat exchange tube groups, thereby adjusting the refrigerant flow path of the heat exchange component to meet different heat exchange modes.

[0004] A heat exchange assembly, comprising:

[0005] Two liquid distribution structures, each liquid distribution structure having a main connection port and at least two branch connection ports, wherein the main connection port of one liquid distribution structure constitutes the heat exchange inlet of the heat exchange component, and the main connection port of the other liquid distribution structure constitutes the heat exchange outlet of the heat exchange component.

[0006] At least two heat exchange tube groups, the number of heat exchange tube groups and the number of branch connections are in one-to-one correspondence, and one end of the heat exchange tube group is connected to one branch connection of the liquid distribution structure, and the other end of the heat exchange tube group is connected to another branch connection of the liquid distribution structure.

[0007] A bypass component is provided between each two adjacent heat exchange tube groups, and all the heat exchange tube groups can be connected in series through the corresponding bypass component.

[0008] The heat exchange assembly has a first heat exchange mode, a second heat exchange mode, and a third heat exchange mode:

[0009] When the heat exchange component is in the first heat exchange mode, all the heat exchange tube groups are connected in series in sequence.

[0010] When the heat exchange assembly is in the second heat exchange mode, all the heat exchange tube groups are arranged in parallel;

[0011] When the heat exchange component is in the third heat exchange mode, at least two heat exchange tube groups are connected in series, and at least one heat exchange tube group is connected in parallel with the series-connected heat exchange tube group.

[0012] A first adjustment mechanism is provided between the heat exchange tube assembly and the corresponding branch connection port, and a second adjustment mechanism is provided on the bypass assembly;

[0013] When the heat exchange assembly is in the first heat exchange mode, the first adjustment mechanism corresponding to the heat exchange tube group at the end of the series sequence is in the connected state, the first adjustment mechanism corresponding to the heat exchange tube group in the middle of the series sequence is in the disconnected state, and all the second adjustment mechanisms are in the connected state.

[0014] When the heat exchange component is in the second heat exchange mode, all the first adjustment mechanisms are in the connected state, and the second adjustment mechanism is in the disconnected state.

[0015] The heat exchange tube assembly includes a first heat exchange tube and a second heat exchange tube. The first end of the first heat exchange tube is connected to the corresponding branch connection port, and the second end of the second heat exchange tube is connected to the corresponding branch connection port. The second end of the first heat exchange tube and the first end of the second heat exchange tube are connected through a third adjustment mechanism.

[0016] When the heat exchange component is in the first heat exchange mode, the third adjustment mechanism is in the off state;

[0017] When the heat exchange component is in the second heat exchange mode, the third adjustment mechanism is in a connected state.

[0018] The bypass assembly includes a first bypass pipe and a second bypass pipe. In the two heat exchange tube groups connected in series, one end of the first bypass pipe is connected to the first end of the first heat exchange tube in one heat exchange tube group, and the other end is connected to the second end of the first heat exchange tube in the other heat exchange tube group. One end of the second bypass assembly is connected to the first end of the second heat exchange tube in one heat exchange tube group, and the other end is connected to the second end of the second heat exchange tube in the other heat exchange tube group.

[0019] Both the first heat exchange tube and the second heat exchange tube are U-shaped, and both ends of the U-shape are located on the first side of the heat exchange assembly. The third adjustment mechanism is disposed on the first side of the heat exchange assembly.

[0020] The first regulating mechanism and / or the second regulating mechanism are flow regulating structures.

[0021] The heat exchange assembly further includes a detection device, which is capable of acquiring the refrigerant subcooling and / or refrigerant superheat within the heat exchange assembly, and the detection device is electrically connected to the first regulating mechanism and / or the second regulating mechanism.

[0022] The heat exchange system containing the heat exchange components has a cooling mode and a heating mode;

[0023] When the heat exchange component is in cooling mode, the heat exchange component is in either the first heat exchange mode or the third heat exchange mode;

[0024] When the heat exchange component is in heating mode, the heat exchange component is in the second heat exchange mode or the third heat exchange mode.

[0025] An air conditioning unit includes the heat exchange components described above.

[0026] The heat exchange component and air conditioning unit provided by this invention, by setting a bypass component, can connect the heat exchange tube groups in series, so that the refrigerant passes through at least two heat exchange tube groups in sequence, thereby improving the flow path of the refrigerant in the heat exchange component and thus improving the heat exchange effect of the refrigerant in the heat exchange component for cooling. At the same time, the bypass component can be closed to keep the heat exchange tube groups in parallel to improve the heat exchange effect of the heat exchange component for heating. That is, the heat exchange component can simultaneously meet different heat exchange modes of the heat pump air conditioning system, thereby ensuring the heat exchange efficiency of the heat pump air conditioning system. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the first heat exchange mode of the heat exchange component provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the second heat exchange mode of the heat exchange component provided in an embodiment of the present invention;

[0029] In the picture:

[0030] 1. Liquid separation structure; 11. Main connection port; 12. Sub-connection port; 2. Heat exchange tube assembly; 3. First regulating mechanism; 4. Second regulating mechanism; 21. First heat exchange tube; 22. Second heat exchange tube; 5. Third regulating mechanism; 61. First bypass pipe; 62. Second bypass pipe. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention.

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate for the embodiments of the invention described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] It should be noted that in the description of this invention, terms such as "upper," "lower," "left," "right," "inner," and "outer," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" 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 direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Heat pump air conditioning systems have two different operating modes: cooling and heating. The flow paths in these two modes are opposite, but both utilize heat exchangers for heat exchange. This means that engineers often need to design the heat exchange path of the condenser based on the unit's cooling or heating priority. This allows the heat pump air conditioning system to effectively improve heat exchange efficiency in its preferred cooling or heating mode, but in the opposite operating mode, the heat exchange efficiency is very low, severely affecting the heat exchange effect of the heat pump air conditioning system. Therefore, this application provides a method... Figure 1 and Figure 2 The heat exchange assembly shown includes: two liquid distribution structures 1, each liquid distribution structure 1 having a main connection port 11 and at least two branch connection ports 12, wherein the main connection port 11 of one liquid distribution structure 1 constitutes the heat exchange inlet of the heat exchange assembly, and the main connection port 11 of the other liquid distribution structure 1 constitutes the heat exchange outlet of the heat exchange assembly; at least two heat exchange tube groups 2, the number of heat exchange tube groups 2 corresponding one-to-one with the number of branch connection ports 12, and one end of each heat exchange tube group 2 is connected to one branch connection port 12 of the liquid distribution structure 1, and the other end of each heat exchange tube group 2 is connected to the branch connection port 12 of the other liquid distribution structure 1; and a bypass assembly, wherein each of two adjacent heat exchange tube groups 2 is provided with a bypass assembly, and all heat exchange tube groups 2 can be connected in series through the corresponding bypass assembly. By setting a bypass component, the heat exchange tube groups 2 can be connected in series, allowing the refrigerant to pass through at least two heat exchange tube groups 2 sequentially. This improves the flow path of the refrigerant in the heat exchange components, thereby enhancing the heat exchange effect of the refrigerant in the heat exchange components. At the same time, the bypass component can be closed to keep the heat exchange tube groups 2 in parallel to meet the optimal flow path length for refrigerant heating, improving the heat exchange effect of the heat exchange components. In other words, the heat exchange components can simultaneously meet different heat exchange modes of the heat pump air conditioning system, thereby ensuring the heat exchange efficiency of the heat pump air conditioning system.

[0037] The heat exchange component has a first heat exchange mode, a second heat exchange mode, and a third heat exchange mode:

[0038] When the heat exchange component is in the first heat exchange mode, all the heat exchange tube groups 2 are connected in series. The refrigerant will flow in from the main connection port 11 of the liquid distribution structure 1, and then flow into a heat exchange tube group 2 through one of the branch connection ports 12. It will then flow into the next heat exchange tube group 2 through the bypass component, until it flows into the corresponding branch connection port 12 of another liquid distribution structure 1 after passing through the last heat exchange tube group 2. Then it will be discharged through the main connection port 11 of this liquid distribution structure 1, thus realizing the heat exchange flow path of the refrigerant when the heat exchange component is in the first heat exchange mode.

[0039] When the heat exchange component is in the second heat exchange mode, all the heat exchange tube groups 2 are arranged in parallel. The refrigerant will flow into the main connection port 11 of a liquid distribution structure 1 and flow into all the heat exchange tube groups 2 through all its branch connection ports 12. At this time, the refrigerant will be divided into multiple streams, each stream of refrigerant will flow into a heat exchange tube group 2 and finally flow into the corresponding branch connection port 12 of another liquid distribution structure 1. Then all the refrigerant will be collected in this liquid distribution structure 1 and discharged through the main connection port 11, thus realizing the heat exchange flow path of the refrigerant when the heat exchange component is in the second heat exchange mode.

[0040] When the heat exchange assembly is in the third heat exchange mode, at least two heat exchange tube groups 2 are connected in series, and at least one heat exchange tube group 2 is connected in parallel with the series-connected heat exchange tube group 2. The refrigerant flows in from the main connection port 11 of a liquid distribution structure 1 and is divided into multiple streams within the liquid distribution structure 1. Each stream of refrigerant can flow into the corresponding heat exchange tube group 2 through a branch connection port 12. When it flows into the series-connected heat exchange tube groups 2, it will flow into the next heat exchange tube group 2 through a bypass component after passing through one heat exchange tube group 2, until it flows into the corresponding branch connection port 12 of another liquid distribution structure 1 after passing through the last heat exchange tube group 2. When it flows into the heat exchange tube groups 2 that are not series-connected, it can flow directly into the corresponding branch connection port 12 of another liquid distribution structure 1 through this heat exchange tube group 2. Then all the refrigerant is collected in this liquid distribution structure 1 and discharged through the main connection port 11, thus realizing the heat exchange flow path of the refrigerant when the heat exchange assembly is in the third heat exchange mode.

[0041] In order to ensure that the heat exchange assembly can freely switch between the first heat exchange mode, the second heat exchange mode and the third heat exchange mode, a first adjustment mechanism 3 is provided between the heat exchange tube group 2 and the corresponding branch connection port 12, and a second adjustment mechanism 4 is provided on the bypass assembly.

[0042] When the heat exchange component is in the first heat exchange mode, the first regulating mechanism 3 corresponding to the heat exchange tube group 2 at the end of the series sequence is in the connected state, and the first regulating mechanism 3 corresponding to the heat exchange tube group 2 in the middle of the series sequence is in the disconnected state. All the second regulating mechanisms 4 are in the connected state. That is, at this time, only one heat exchange tube group 2 is connected to the two liquid distribution structures 1 to ensure that the refrigerant can flow into and out of the heat exchange component. All bypass components are in the connected state, so that the refrigerant can pass through the heat exchange tube groups 2 connected in series in sequence, thereby effectively improving the flow path of the refrigerant and improving the cooling effect of the heat exchange component.

[0043] When the heat exchange component is in the second heat exchange mode, all the first regulating mechanisms 3 are in the connected state and the second regulating mechanism 4 is in the disconnected state. At this time, all the bypass components are in the disconnected state, and the refrigerant can only flow along the flow path of the heat exchange tube group 2, thereby increasing the heating effect of the heat exchange component.

[0044] When the heat exchange assembly is in the third heat exchange mode, the heat exchange tube group 2 in the series section is adjusted according to the adjustment method of the first adjustment mechanism 3 and the second adjustment mechanism 4 in the first heat exchange mode, while the heat exchange tube group 2 in the parallel section is adjusted according to the adjustment method of the first adjustment mechanism 3 and the second adjustment mechanism 4 in the second heat exchange mode.

[0045] In one embodiment, the heat exchange tube group 2 includes a first heat exchange tube 21 and a second heat exchange tube 22. The first end of the first heat exchange tube 21 is connected to the corresponding branch connection port 12, and the second end of the second heat exchange tube 22 is connected to the corresponding branch connection port 12. The second end of the first heat exchange tube 21 and the first end of the second heat exchange tube 22 are connected through a third adjustment mechanism 5.

[0046] When the heat exchange component is in the first heat exchange mode, the third adjustment mechanism 5 is in the disconnected state, that is, the connection between the first heat exchange tube 21 and the second heat exchange tube 22 is cut off. The refrigerant will flow through the first heat exchange tube 21 of all heat exchange tube groups 2 in sequence, and then flow through the second heat exchange tube 22 of all heat exchange tube groups 2 in sequence, thereby achieving the maximum flow path and effectively improving the heat exchange efficiency of the heat exchange component.

[0047] When the heat exchange component is in the second heat exchange mode, the third adjustment mechanism 5 is in a connected state, which ensures the connection between the first heat exchange tube 21 and the second heat exchange tube 22, so that the refrigerant flow path length in the heat exchange component conforms to the optimal flow path length when the refrigerant is heating, thereby improving the heating effect of the heat exchange component.

[0048] Similarly, the bypass assembly includes a first bypass pipe 61 and a second bypass pipe 62. In the two heat exchange tube groups 2 connected in series, one end of the first bypass pipe 61 is connected to the first end of the first heat exchange tube 21 in one heat exchange tube group 2, and the other end is connected to the second end of the first heat exchange tube 21 in the other heat exchange tube group 2. One end of the second bypass assembly is connected to the first end of the second heat exchange tube 22 in one heat exchange tube group 2, and the other end is connected to the second end of the second heat exchange tube 22 in the other heat exchange tube group 2. The first bypass pipe 61 realizes the series connection between two adjacent first heat exchange tubes 21, and the second bypass pipe 62 realizes the series connection between two adjacent second heat exchange tubes 22, ensuring that the refrigerant can be in the maximum flow path and improving the cooling effect.

[0049] In one implementation, both the first heat exchange tube 21 and the second heat exchange tube 22 are U-shaped, with both ends of the U-shape located on the first side of the heat exchange assembly. The third adjustment mechanism 5 is disposed on the first side of the heat exchange assembly. In this case, the first bypass pipe 61 and the second bypass pipe 62 are also disposed on the first side of the heat exchange assembly, which increases the heat exchange efficiency of the heat exchange tube group 2 and facilitates the assembly of the heat exchange assembly. Figure 1 and Figure 2As shown, there are four heat exchanger tube groups 2, arranged vertically side by side. The first heat exchanger tube 21 is located on the left side of the heat exchange assembly, with its first end at the bottom and its second end at the top. A first bypass pipe 61 is provided between two adjacent first heat exchanger tubes 21. The second heat exchanger tube 22 is located on the right side of the heat exchange assembly, with its second end at the bottom and its first end at the top. A second bypass pipe 62 is provided between two adjacent second heat exchanger tubes 22. A first regulating mechanism 3 is provided between the first end of each first heat exchanger tube 21 and the gas collecting pipe (liquid separating structure 1) on the left side of the figure. A second regulating mechanism 4 is provided on the first bypass pipe 61 and the second bypass pipe 62. A first regulating mechanism 3 is provided between the second end of the second heat exchanger tube 22 and the liquid separating head (liquid separating structure 1) on the right side of the figure. A third adjustment mechanism 5 is also provided between the first ends of the heat pipe 22. That is, the number of the first adjustment mechanisms 3 in the figure is 8 (four on the left and four on the right), the number of the second adjustment mechanisms 4 is 6 (three on the vertical line where the first heat exchange pipe 21 is located and three on the vertical line where the second heat exchange pipe 22 is located), and the number of the third adjustment mechanisms 5 is 4 (four in the middle). This enables the heat exchange assembly formed by the four heat exchange pipe groups 2 to freely switch between the first heat exchange mode, the second heat exchange mode and the third heat exchange mode. Taking the length of the straight section of the U-shape of the first heat exchange pipe 21 and the second heat exchange pipe 22 as an example, which is 3m, the length of the first heat exchange pipe 21 and the second heat exchange pipe 22 is 6m. When the heat exchange assembly is in the first heat exchange mode, due to the series setting, the total length of the refrigerant flow path in the heat exchange assembly is 48m. When the heat exchange assembly is in the second heat exchange mode, due to the parallel setting, the length of each refrigerant flow path in the heat exchange assembly is 12m.

[0050] Preferably, the first regulating mechanism 3 and / or the second regulating mechanism 4 are flow regulating structures. The flow regulating structure is used to regulate the refrigerant flow rate, thereby controlling and regulating the heat exchange capacity of the heat exchange component. In particular, when the heat exchange component is in the second heat exchange mode, the first regulating structure can regulate the refrigerant flow rate of its corresponding heat exchange tube group 2, so that the amount of refrigerant in each heat exchange tube group 2 is basically the same, thereby improving the heating effect of the heat exchange component.

[0051] The heat exchange assembly also includes a detection device capable of acquiring the refrigerant subcooling and / or refrigerant superheat within the heat exchange assembly, and the detection device is electrically connected to the first regulating mechanism 3 and / or the second regulating mechanism 4. When the heat exchange assembly is cooling, the refrigerant subcooling is detected, and the opening degrees of the first regulating mechanism 3 and the second regulating mechanism 4 are adjusted according to the subcooling to regulate the subcooling, thereby regulating the cooling effect of the heat exchange assembly. Similarly, when the heat exchange assembly is heating, the refrigerant superheat is detected, and the opening degrees of the first regulating mechanism 3 and the second regulating mechanism 4 are adjusted according to the superheat to regulate the subcooling, thereby regulating the heating effect of the heat exchange assembly.

[0052] Specifically, the heat exchange system containing the heat exchange components has a cooling mode and a heating mode;

[0053] When the heat exchange component is in cooling mode, it operates in either the first or third heat exchange mode. In cooling mode, the temperature sensor on the distributor head detects the temperature of the refrigerant flowing out of the heat exchange component and compares it with the corresponding high-pressure temperature detected by the system to determine the subcooling of the refrigerant. If the subcooling is less than the design temperature, the opening of the first regulating mechanism 3 or the second regulating mechanism 4 is reduced to decrease the refrigerant flow and increase the subcooling. If the subcooling is greater than the design temperature, the solenoid valve is opened to increase the refrigerant flow and decrease the subcooling. During adjustment, if the adjustment of the first regulating mechanism 3 or the second regulating mechanism 4 can meet the subcooling requirement, the heat exchange component remains in the first heat exchange mode. If the adjustment of the first regulating mechanism 3 or the second regulating mechanism 4 cannot meet the subcooling requirement, the heat exchange component is switched to the third heat exchange mode to reduce the length of the refrigerant flow path and improve the heat exchange effect.

[0054] Similarly, when the heat exchange component is in heating mode, it operates in either the second or third heat exchange mode. In heating mode, the temperature sensor on the gas collecting pipe detects the temperature of the refrigerant flowing out of the heat exchange component and compares it with the corresponding high-pressure temperature detected by the system to determine the refrigerant's superheat. If the superheat is less than the design temperature, the opening of the first regulating mechanism 3 is reduced to decrease the refrigerant flow and increase the superheat; if the superheat is greater than the design temperature, the solenoid valve is opened to increase the refrigerant flow and decrease the superheat. During adjustment, if the adjustment of the first regulating mechanism 3 can meet the superheat adjustment requirements, the heat exchange component remains in the second heat exchange mode. If the adjustment of the first regulating mechanism 3 cannot meet the superheat adjustment requirements, the heat exchange component is switched to the third heat exchange mode to increase the length of the refrigerant flow path and improve the heat exchange effect.

[0055] An air conditioning unit includes the aforementioned heat exchange components.

[0056] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A heat exchange component, characterized in that: include: Two liquid distribution structures (1), each liquid distribution structure (1) having a main connection port (11) and at least two sub-connection ports (12), wherein the main connection port (11) of one liquid distribution structure (1) constitutes the heat exchange inlet of the heat exchange assembly, and the main connection port (11) of the other liquid distribution structure (1) constitutes the heat exchange outlet of the heat exchange assembly. At least two heat exchange tube groups (2), the number of heat exchange tube groups (2) corresponds one-to-one with the number of branch connections (12), and one end of the heat exchange tube group (2) is connected to the branch connection (12) of one of the liquid separation structures (1), and the other end of the heat exchange tube group (2) is connected to the branch connection (12) of another liquid separation structure (1). The heat exchange tube group (2) includes a first heat exchange tube (21) and a second heat exchange tube (22). The first end of the first heat exchange tube (21) is connected to the corresponding branch connection (12), and the second end of the second heat exchange tube (22) is connected to the corresponding branch connection (12). The second end of the first heat exchange tube (21) and the first end of the second heat exchange tube (22) are connected through a third adjustment mechanism (5). A bypass assembly is provided between each of the two adjacent heat exchange tube groups (2), and all the heat exchange tube groups (2) can be connected in series through the corresponding bypass assembly; the bypass assembly includes a first bypass pipe (61) and a second bypass pipe (62). In the two heat exchange tube groups (2) connected in series, one end of the first bypass pipe (61) is connected to the first end of the first heat exchange tube (21) in one heat exchange tube group (2), and the other end is connected to the second end of the first heat exchange tube (21) in another heat exchange tube group (2). One end of the second bypass pipe (62) is connected to the first end of the second heat exchange tube (22) in one heat exchange tube group (2), and the other end is connected to the second end of the second heat exchange tube (22) in another heat exchange tube group (2). The heat exchange component has a first heat exchange mode and a second heat exchange mode: when the heat exchange component is in the first heat exchange mode, all the heat exchange tube groups (2) are connected in series in sequence, the third adjustment mechanism (5) corresponding to the heat exchange tube group (2) located in the middle of the series sequence is in a two-way state, and the other third adjustment mechanisms (5) are in a disconnected state; when the heat exchange component is in the second heat exchange mode, all the heat exchange tube groups (2) are arranged in parallel, and the third adjustment mechanism (5) is in a connected state.

2. The heat exchange assembly according to claim 1, characterized in that: The heat exchange assembly has a third heat exchange mode: When the heat exchange component is in the third heat exchange mode, at least two heat exchange tube groups (2) are connected in series, and at least one heat exchange tube group (2) is connected in parallel with the series-connected heat exchange tube group (2).

3. The heat exchange component according to claim 2, characterized in that: A first adjustment mechanism (3) is provided between the heat exchange tube group (2) and the corresponding branch connection port (12), and a second adjustment mechanism (4) is provided on the bypass component. When the heat exchange component is in the first heat exchange mode, the first adjustment mechanism (3) corresponding to the heat exchange tube group (2) located at the end of the series sequence is in the connected state, the first adjustment mechanism (3) corresponding to the heat exchange tube group (2) located in the middle of the series sequence is in the disconnected state, and all the second adjustment mechanisms (4) are in the connected state. When the heat exchange component is in the second heat exchange mode, all the first adjustment mechanisms (3) are in the connected state, and the second adjustment mechanism (4) is in the disconnected state.

4. The heat exchange assembly according to claim 1, characterized in that: The first heat exchange tube (21) and the second heat exchange tube (22) are both U-shaped, and both ends of the U-shape are located on the first side of the heat exchange assembly. The third adjustment mechanism (5) is located on the first side of the heat exchange assembly.

5. The heat exchange assembly according to claim 3, characterized in that: The first regulating mechanism (3) and / or the second regulating mechanism (4) are flow regulating structures.

6. The heat exchange assembly according to claim 5, characterized in that: The heat exchange assembly also includes a detection device, which is capable of acquiring the refrigerant subcooling and / or refrigerant superheat within the heat exchange assembly, and the detection device is electrically connected to the first regulating mechanism (3) and / or the second regulating mechanism (4).

7. The heat exchange assembly according to claim 3, characterized in that: The heat exchange system containing the heat exchange components has a cooling mode and a heating mode; When the heat exchange component is in cooling mode, the heat exchange component is in either the first heat exchange mode or the third heat exchange mode; When the heat exchange component is in heating mode, the heat exchange component is in the second heat exchange mode or the third heat exchange mode.

8. An air conditioning unit, characterized in that: It includes the heat exchange component according to any one of claims 1 to 7.

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