Air conditioning system and air conditioner having the same

Abstract

The utility model discloses a kind of air conditioning system and air conditioner with it, air conditioning system includes: compressor, outdoor heat exchange unit, first indoor heat exchange unit, second indoor heat exchange unit and reversing valve, reversing valve has first valve port, second valve port, multiple third valve ports and multiple fourth valve ports, first valve port is communicated with air inlet, second valve port is communicated with air outlet, multiple third valve ports are connected with multiple outdoor heat exchangers of outdoor heat exchange unit respectively, one of fourth valve ports is connected with first indoor heat exchange unit, one of remaining fourth valve ports is connected with second indoor heat exchange unit, reversing valve can act to switch different third valve port and second valve port communication and / or first valve port communication, and can act to switch different fourth valve port and second valve port and / or first valve port communication. By setting reversing valve switching multiple valve ports communication, multiple operation modes can be realized;And the number of pipeline and valve of air conditioning system can be simplified, reduce structural complexity.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment technology, and in particular to an air conditioning system and an air conditioner having the same. Background Technology

[0002] With increasing functional demands, household air conditioners are no longer limited to cooling and heating; they also include dehumidification and defrosting functions. Related technologies require multiple valves to control the refrigerant flow, resulting in complex structures and room for improvement. 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 an air conditioning system in which the refrigerant flow path can be controlled using only a single reversing valve, thus simplifying the structure of the air conditioning system.

[0004] An air conditioning system according to a first aspect of the present invention includes: a compressor having an air inlet and an air outlet; an outdoor heat exchange unit including a plurality of outdoor heat exchangers; a first indoor heat exchange unit including at least one first indoor heat exchanger; a second indoor heat exchange unit including at least one second indoor heat exchanger; and a reversing valve having a first valve port, a second valve port, and a plurality of heat exchange valve ports, the plurality of heat exchange valve ports including a plurality of third valve ports and a plurality of fourth valve ports, wherein the first valve port is connected to the air inlet, the second valve port is connected to the air outlet, and the plurality of third valve ports are respectively connected to a first end of the plurality of outdoor heat exchangers. One of the fourth valve ports is connected to the first end of the first indoor heat exchange unit, and one of the remaining fourth valve ports is connected to the first end of the second indoor heat exchange unit. The second ends of the plurality of outdoor heat exchangers are connected to the second ends of the first indoor heat exchange unit and the second indoor heat exchange unit. The reversing valve is operable to switch different third valve ports connected to the second valve port and to switch different third valve ports connected to the first valve port, and is also operable to switch different fourth valve ports connected to the second valve port and to switch different fourth valve ports connected to the first valve port.

[0005] The air conditioning system according to the present invention can realize multiple operating modes and improve the functionality of the air conditioning system; the refrigerant flow path in the air conditioning system can be controlled by setting a reversing valve to switch the connection of multiple valve ports. The setting of the reversing valve can simplify the number of pipes and valves in the air conditioning system, reduce structural complexity, and facilitate layout; moreover, the reversing valve is simple to control and easy to use.

[0006] In some embodiments, the air conditioning system has a heating and defrosting mode, in which at least one of the outdoor heat exchangers is connected to the second valve port through the corresponding third valve port, and at least one of the outdoor heat exchangers is connected to the first valve port through the corresponding third valve port, and the first indoor heat exchange unit and the second indoor heat exchange unit are respectively connected to the second valve port through the corresponding fourth valve port.

[0007] In some embodiments, the air conditioning system has multiple heating and defrosting modes, and in different heating and defrosting modes, different outdoor heat exchangers are connected to the second valve port. In some embodiments, the air conditioning system has a dehumidification and reheat mode. In the dehumidification and reheat mode, the second indoor heat exchange unit is connected to the second valve port through the corresponding fourth valve port, the first indoor heat exchange unit is connected to the first valve port through the corresponding fourth valve port, and the outdoor heat exchange unit is connected to the second valve port through the reversing valve.

[0008] In some embodiments, a first throttling element is provided between the second end of the outdoor heat exchange unit and the second end of the first indoor heat exchange unit, and a second throttling element is provided between the second end of the outdoor heat exchange unit and the second end of the second indoor heat exchange unit. The second end of the first indoor heat exchange unit is connected to the second end of the second indoor heat exchange unit through the first throttling element and through the second throttling element.

[0009] In some embodiments, there are multiple first indoor heat exchangers and multiple second indoor heat exchangers, each of the first indoor heat exchangers corresponding to one of the first throttling elements, and each of the second indoor heat exchangers corresponding to one of the second throttling elements.

[0010] In some embodiments, the number of the first indoor heat exchangers is greater than or equal to the number of the second indoor heat exchangers.

[0011] In some embodiments, the air conditioning system further includes an indoor unit, which includes a housing and at least one first indoor heat exchanger and at least one second indoor heat exchanger disposed within the housing. The first indoor heat exchanger and the second indoor heat exchanger are arranged along the height direction or in a front-to-back arrangement along the airflow direction.

[0012] In some embodiments, the air conditioning system further includes an outdoor unit, which includes a housing and a plurality of outdoor heat exchangers disposed within the housing. The plurality of outdoor heat exchangers are arranged along the height direction or in a front-to-back arrangement along the airflow direction.

[0013] In some embodiments, the air conditioning system further includes a plurality of outdoor throttling elements disposed within the housing and connected between the second end of the outdoor heat exchanger and the second end of the first indoor heat exchange unit. Each outdoor heat exchanger has one outdoor throttling element connected in series at its second end, and the second ends of each outdoor heat exchanger are connected to each other through the corresponding outdoor throttling element.

[0014] In some embodiments, a first throttling element is provided between the second end of the outdoor heat exchange unit and the second end of the first indoor heat exchange unit, and a second throttling element is provided between the second end of the outdoor heat exchange unit and the second end of the second indoor heat exchange unit. The second end of the first indoor heat exchange unit is connected to the second end of the second indoor heat exchange unit through the first throttling element and through the second throttling element. The air conditioning system further includes an economizer, which has a first heat exchange channel and a second heat exchange channel that exchange heat with each other. The first end of the first heat exchange channel is connected to each of the first throttling element and each of the second throttling elements. The second end of the first heat exchange channel is connected to the outdoor heat exchange unit. The inlet of the second heat exchange channel is connected between the outdoor heat exchange unit and the second end of the first heat exchange channel through a third throttling element. The outlet of the second heat exchange channel is connected to the air inlet or the air supply port of the compressor.

[0015] In some embodiments, the air conditioning system further includes a one-way throttling valve connected between the outdoor heat exchange unit and the economizer, and used to throttle the refrigerant flowing from the economizer to the outdoor heat exchange unit.

[0016] In some embodiments, the air conditioning system has a heating mode, wherein the first indoor heat exchange unit and the second indoor heat exchange unit are respectively connected to the second valve port through the corresponding fourth valve port, and the outdoor heat exchange unit is connected to the first valve port through the reversing valve; and / or, the air conditioning system has a cooling mode, wherein the outdoor heat exchange unit is connected to the second valve port through the reversing valve, and the first indoor heat exchange unit and the second indoor heat exchange unit are respectively connected to the first valve port through the corresponding fourth valve port.

[0017] In some embodiments, the reversing valve is configured to have multiple switching states to enable the air conditioning system to have multiple operating modes, wherein in any of the switching states, at least one of the heat exchange valve ports is connected to the second valve port, and the remaining heat exchange valve ports are connected to the first valve port.

[0018] In some embodiments, the reversing valve includes: a valve body having a valve cavity, wherein a first valve port, a second valve port, and a plurality of heat exchange valve ports are formed on the valve body; and a valve core rotatably disposed in the valve cavity about the central axis of the valve body, and dividing the valve cavity into a first communicating cavity and a second communicating cavity, wherein the first communicating cavity communicates with the first valve port, and the second communicating cavity communicates with the second valve port.

[0019] In some embodiments, the valve core defines a communicating groove with its opening facing the first valve port or the second valve port, and the corresponding cavity wall of the valve body closes the opening of the communicating groove.

[0020] In some embodiments, the second valve port is formed on the peripheral wall of the valve body and is axially abutted from the valve core. The first valve port and a plurality of heat exchange valve ports are formed at one axial end of the valve body. The plurality of heat exchange valve ports are arranged around the outer peripheral side of the first valve port. The opening of the communicating groove is arranged facing the side where the first valve port is located and is adapted to communicate with at least one of the heat exchange valve ports.

[0021] In some embodiments, the valve body has a first region and a second region arranged sequentially and connected in the circumferential direction, a plurality of third valve ports are disposed in the first region, and a plurality of fourth valve ports are disposed in the second region.

[0022] An air conditioner according to a second aspect of the present invention includes an air conditioning system according to a first aspect of the present invention.

[0023] According to the present invention, by setting the air conditioning system of the first aspect, the air conditioner can operate in multiple operating states, thereby improving the functionality of the air conditioner.

[0024] 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

[0025] 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: Figure 1 This is a schematic diagram of the structure of an air conditioning system according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the air conditioning system in heating and defrosting mode according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the air conditioning system in another heating and defrosting mode according to an embodiment of the present utility model; Figure 4This is a schematic diagram of the air conditioning system in dehumidification and reheat mode according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the air conditioning system in heating mode according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the air conditioning system in cooling mode according to an embodiment of the present utility model; Figure 7 This is a schematic diagram of the reversing valve according to an embodiment of the present utility model; Figure 8 This is a schematic diagram of the switching valve when the air conditioning system is in heating and defrosting mode according to an embodiment of the present utility model; Figure 9 This is a schematic diagram of the switching valve when the air conditioning system according to an embodiment of the present utility model is in another heating and defrosting mode; Figure 10 This is a schematic diagram of the switching valve when the air conditioning system is in dehumidification and reheat mode according to an embodiment of the present utility model; Figure 11 This is a schematic diagram of the switching valve when the air conditioning system is in heating mode according to an embodiment of the present utility model; Figure 12 This is a schematic diagram of the switching valve when the air conditioning system is in cooling mode according to an embodiment of the present utility model.

[0026] Figure label: Air conditioning system 100; Compressor 1; Inlet 11; Outlet 12; Outdoor heat exchange unit 2; outdoor heat exchanger 20; first outdoor heat exchanger 21; second outdoor heat exchanger 22; First indoor heat exchange unit 3; First indoor heat exchanger 30; First heat exchanger 31; Second heat exchanger 32; Third heat exchanger 33; Second indoor heat exchange unit 4; Second indoor heat exchanger 40; Fourth heat exchanger 41; Fifth heat exchanger 42; Reversing valve 5; First valve port 51; Second valve port 52; Heat exchange valve port 5a; Third valve port 53; First outdoor valve port 531; Second outdoor valve port 532; Fourth valve port 54; First indoor valve port 541; Second indoor valve port 542; Valve body 55; Valve cavity 551; First connecting cavity 5511; Second connecting cavity 5512; First area 552; Second area 553; Valve core 56; Connecting groove 561; Motor 57; Drive shaft 58; First connecting pipe 591; Second connecting pipe 592; Third connecting pipe 593; Fourth connecting pipe 594; Fifth connecting pipe 595; Sixth connecting pipe 596; First indoor heat exchange system 61; Second indoor heat exchange system 62; Third indoor heat exchange system 63; First throttling element 71; Second throttling element 72; Third throttling element 73; Economizer 8; First heat exchange channel 81; First end of first heat exchange channel 811; Second end of first heat exchange channel 812; Second heat exchange channel 82; Inlet of second heat exchange channel 821; Outlet of second heat exchange channel 822; One-way throttle valve 9; one-way valve 91; throttle valve 92. Detailed Implementation

[0027] 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.

[0028] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0029] The air conditioning system 100 of the first aspect of the present invention is described below with reference to the accompanying drawings.

[0030] According to an embodiment of the present utility model, the air conditioning system 100, such as Figure 1 As shown, the air conditioning system 100 includes: a compressor 1, an outdoor heat exchange unit 2, a first indoor heat exchange unit 3, and a second indoor heat exchange unit 4. The outdoor heat exchange unit 2 includes multiple outdoor heat exchangers 20, the first indoor heat exchange unit 3 includes at least one first indoor heat exchanger 30, and the second indoor heat exchange unit 4 includes at least one second indoor heat exchanger 40.

[0031] The air conditioning system 100 also includes a reversing valve 5, which has a first valve port 51, a second valve port 52, and multiple heat exchange valve ports 5a. The multiple heat exchange valve ports 5a include multiple third valve ports 53 and multiple fourth valve ports 54. The first valve port 51 is connected to the air inlet 11, the second valve port 52 is connected to the air outlet 12, the multiple third valve ports 53 are respectively connected to the first end of multiple outdoor heat exchangers 20, one of the fourth valve ports 54 is connected to the first end of the first indoor heat exchange unit 3, and one of the remaining fourth valve ports 54 is connected to the first end of the second indoor heat exchange unit 4. The second ends of the multiple outdoor heat exchangers 20 are connected to the second ends of the first indoor heat exchange unit 3 and the second ends of the second indoor heat exchange unit 4. The reversing valve 5 can be operated to switch different third valve ports 53 connected to the second valve port 52 and to switch different third valve ports 53 connected to the first valve port 51, and can also be operated to switch different fourth valve ports 54 connected to the second valve port 52 and to switch different fourth valve ports 54 connected to the first valve port 51.

[0032] Compressor 1 is used to compress refrigerant and drive the refrigerant to circulate within the air conditioning system 100. The refrigerant circulation process is briefly described as follows: Compressor 1 compresses the refrigerant into a high-temperature, high-pressure gaseous refrigerant. This high-temperature, high-pressure gaseous refrigerant enters the condenser to dissipate heat, where it is converted into a low-temperature, high-pressure liquid refrigerant. Then, the refrigerant passes through a throttling device to reduce its pressure, becoming a low-temperature, low-pressure liquid refrigerant. This low-temperature, low-pressure liquid refrigerant enters the evaporator, where it absorbs heat and transforms into a low-temperature, low-pressure gaseous refrigerant. This low-temperature, low-pressure gaseous refrigerant is then drawn back into compressor 1 for compression, and the cycle continues in this manner.

[0033] The air conditioning system 100 includes an outdoor heat exchange unit 2 installed outdoors, and a first indoor heat exchange unit 3 and a second indoor heat exchange unit 4 installed indoors. When the outdoor heat exchange unit 2 acts as a condenser and performs condensation, and the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 act as evaporators and perform evaporation, the air conditioning system 100 cools the indoor environment. When the outdoor heat exchange unit 2 operates as an evaporator and the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 operate as condensers, the air conditioning system 100 heats the indoor environment.

[0034] Furthermore, the air conditioning system 100 of this embodiment of the present invention has multiple outdoor heat exchangers 20 installed outdoors, and a first indoor heat exchange unit 3 and a second indoor heat exchange unit 4 installed indoors. The first indoor heat exchange unit 3 includes at least one first indoor heat exchanger 30, and the second indoor heat exchange unit 4 includes at least one second indoor heat exchanger 40. For example, the outdoor heat exchange unit 2 includes multiple outdoor heat exchangers 20 connected in parallel, which can improve the working efficiency of the outdoor heat exchange unit 2.

[0035] By setting up multiple outdoor heat exchangers 20 and a first indoor heat exchange unit 3 and a second indoor heat exchange unit 4, the refrigerant circulation of the air conditioning system 100 can be increased, thereby improving the cooling or heating efficiency of the air conditioning system 100. Furthermore, by setting up the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4, the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 can be placed in different areas of the room, thereby increasing the radiation range of the air conditioning system 100 and improving its working efficiency.

[0036] By setting the reversing valve 5 to switch the flow direction of the refrigerant in the air conditioning system 100, the working state of the outdoor heat exchanger 20, the first indoor heat exchanger 30 and the second indoor heat exchanger 40 can also be changed to achieve different working modes, such as the heating defrosting mode and the dehumidification reheat mode described below, thereby improving the functionality of the air conditioning system 100.

[0037] The reversing valve 5 has a first valve port 51, a second valve port 52, and multiple heat exchange valve ports 5a. The first valve port 51 is connected to the inlet port 11, and the low-temperature, low-pressure gaseous refrigerant flows to the compressor 1 through the second valve port 52. The heat exchanger directly connected upstream of the first valve port 51 performs the evaporation function. The second valve port 52 is connected to the outlet port 12, and the second valve port 52 can discharge high-temperature, high-pressure gaseous refrigerant. The heat exchanger directly connected downstream of the second valve port 52 performs the condensation function. Here, "direct connection" means that there are no other heat exchangers connected between the first valve port 51 and the heat exchanger, and no other heat exchangers connected between the second valve port 52 and the heat exchanger. It does not mean that there are no other valves or other components connected between the first valve port 51 or the second valve port 52 and the heat exchanger.

[0038] The heat exchange valve port 5a includes multiple third valve ports 53 and multiple fourth valve ports 54. The multiple third valve ports 53 are respectively connected to the first ends of multiple outdoor heat exchangers 20, and at least two fourth valve ports 54 are respectively connected to the first ends of the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4. The second ends of the multiple second outdoor heat exchangers 20 are connected to the second ends of the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4. Thus, the heat exchange valve port 5a connects the outdoor heat exchanger 20 and the first indoor heat exchange unit 3, or connects the outdoor heat exchanger 20 and the second indoor heat exchange unit 4, allowing the refrigerant to flow in the flow path, thereby enabling the outdoor heat exchanger 20, the first indoor heat exchange unit 3, and the second indoor heat exchange unit 4 to operate.

[0039] The reversing valve 5 can switch between different third valve ports 53 and the first valve port 51, at which time the outdoor heat exchanger 20 connected to the third valve port 53 plays an evaporation role; the reversing valve 5 can also switch between different third valve ports 53 and the second valve port 52, at which time the outdoor heat exchanger 20 connected to the third valve port 53 plays a condensation role.

[0040] The reversing valve 5 can also connect to the first valve port 51 by switching different fourth valve ports 54. At this time, the first indoor heat exchanger 30 and / or the second indoor heat exchanger 40 connected to the fourth valve port 54 play an evaporation role. The reversing valve 5 can also connect to the second valve port 52 by switching different fourth valve ports 54. At this time, the first outdoor heat exchanger 21 and / or the second indoor heat exchanger 40 connected to the fourth valve port 54 play a condensation role.

[0041] For example, the reversing valve 5 connects the first valve port 51 to multiple fourth valve ports 54, and the reversing valve 5 connects the second valve port 52 to multiple third valve ports 53. At this time, multiple outdoor heat exchangers 20 play a condensing role, and the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 play an evaporating role. The air conditioning system 100 can efficiently cool the indoor space and improve the cooling efficiency.

[0042] Furthermore, the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4, both located within the same room, can respectively perform evaporation and condensation functions, thereby enhancing the functionality of the air conditioning system 100. For example, the reversing valve 5 connects the fourth valve port 54, which is connected to the first indoor heat exchange unit 30, to the first valve port 51; the reversing valve 5 also connects the fourth valve port 54, which is connected to the second indoor heat exchange unit 4, to the second valve port 52. In this case, the first indoor heat exchange unit 3 performs evaporation, and the second indoor heat exchange unit 4 performs condensation. The airflow sequentially passes through the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4. When the airflow passes through the first indoor heat exchange unit 3, the moisture in the air liquefies upon cooling, and the air is dehumidified. As the airflow continues to flow through the second indoor heat exchange unit 4, it is heated, thus reducing the moisture content of the air while maintaining the airflow temperature, achieving dehumidification at room temperature.

[0043] By setting a reversing valve 5, the refrigerant flow path in the air conditioning system 100 can be controlled simply by switching the connection of multiple valve ports of the reversing valve 5. Compared with setting multiple pipelines with shut-off valves to control the flow path separately to control the refrigerant flow path, the present invention simplifies the structure by setting a reversing valve 5, facilitates the layout, and is simple to control and easy to use.

[0044] According to the embodiment of the present utility model, the air conditioning system 100 can realize multiple operating modes, thereby improving the functionality of the air conditioning system 100. By setting the reversing valve 5 to switch the connection of multiple valve ports, the refrigerant flow path in the air conditioning system 100 can be controlled. The setting of the reversing valve 5 can simplify the number of pipes and valves in the air conditioning system 100, reduce structural complexity, and facilitate layout. Moreover, the control of the reversing valve 5 is simple and convenient to use.

[0045] In some embodiments of this utility model, such as Figure 2As shown, the air conditioning system 100 has a heating and defrosting mode. In the heating and defrosting mode, at least one outdoor heat exchanger 20 is connected to the second valve port 52 through the corresponding third valve port 53, and at least one outdoor heat exchanger 20 is connected to the first valve port 51 through the corresponding third valve port 53. The first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 are respectively connected to the second valve port 52 through the corresponding fourth valve port 54.

[0046] In related technologies, when outdoor temperatures are low in winter, moisture in the outdoor air easily condenses into frost on the outdoor heat exchanger. When the air conditioning system needs to heat the room, the frost on the outdoor heat exchanger obstructs airflow, reduces the heat exchange efficiency of the outdoor heat exchanger, and consequently decreases the heating capacity of the air conditioning system while increasing the compressor load. In some embodiments of this invention, the air conditioning system 100 has a heating defrosting function, allowing high-temperature, high-pressure gaseous refrigerant to flow to the outdoor heat exchanger 20, melting the frost on the outdoor heat exchanger 20. This improves the working efficiency of the outdoor heat exchanger 20, enhances the subsequent heating efficiency to the room, and reduces the load on the compressor 1.

[0047] The third valve port 53 is connected to the second valve port 52. At this time, the outdoor heat exchanger 20 connected to the third valve port 53 plays a condensing role. The refrigerant releases heat in the outdoor heat exchanger 20, so that the outdoor heat exchanger 20 can be heated and defrosted.

[0048] It is worth noting that defrosting of the outdoor heat exchanger 20 is generally required in winter when the ambient temperature is low. Therefore, defrosting the outdoor heat exchanger 20 must be performed without further lowering the indoor temperature. Thus, the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 are connected to the second valve port 52 via corresponding fourth valve port 54. Both the first indoor heat exchange unit 3 and the second indoor unit serve a condensing function, providing heat to the indoor environment and defrosting the outdoor heat exchanger 20 while maintaining the outdoor temperature.

[0049] An outdoor heat exchanger 20 is also needed to perform evaporation and achieve refrigerant circulation. Therefore, at least one outdoor heat exchanger 20 is connected to the first valve port 51 through the corresponding third valve port 53. This outdoor heat exchanger 20 performs evaporation, converting the refrigerant into a low-temperature, low-pressure gaseous refrigerant for the compressor 1 to draw in.

[0050] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the air conditioning system 100 has multiple heating and defrosting modes. In different heating and defrosting modes, different outdoor heat exchangers 20 are connected to the second valve port 52.

[0051] The outdoor heat exchanger 20, which is connected to the second valve port 52, can be heated and defrosted, allowing the high-temperature and high-pressure gaseous refrigerant to flow to the outdoor heat exchanger 20, melting the frost layer on the outdoor heat exchanger 20, thereby improving the working efficiency of the outdoor heat exchanger 20.

[0052] In different heating and defrosting modes, different outdoor heat exchangers 20 are connected to the second valve port 52. By setting multiple heating and defrosting modes, all different outdoor heat exchangers 20 are heated and defrosted, thereby improving the working efficiency of multiple outdoor heat exchangers 20 and the working efficiency of the air conditioning system 100. After all the outdoor heat exchangers 20 have completed defrosting, the reversing valve 5 can be switched so that all outdoor heat exchangers 20 perform evaporation, and both the first and second indoor units perform condensation, thereby improving the heat exchange efficiency of the air conditioning system 100 on the indoor space.

[0053] The air conditioning system 100 has multiple heating and defrosting modes. After one of the outdoor heat exchangers 20 has finished defrosting, the heating and defrosting mode can be switched. That is, the outdoor heat exchanger 20 connected to the second valve port 52 is switched, while the outdoor heat exchanger 20 after defrosting is switched to be connected to the first valve port 51 to perform evaporation and realize the circulation of refrigerant.

[0054] The switching between multiple heating and defrosting modes enables alternating defrosting modes, heating and defrosting multiple outdoor heat exchangers 20, which can improve the working efficiency of the air conditioning system 100.

[0055] The following is a reference appendix. Figure 2 and attached Figure 3 Briefly describe the working process of the air conditioning system 100 in the alternating heating and defrosting mode in some specific embodiments of this utility model. Figure 2 and Figure 3 The middle arrow indicates the direction of refrigerant flow.

[0056] The outdoor heat exchange unit 2 includes a first outdoor heat exchanger 21 and a second outdoor heat exchanger 22. The reversing valve 5 includes two third valve ports 53 that are respectively connected to the first outdoor heat exchanger 21 and the second outdoor heat exchanger 22. The first outdoor valve port 531 is connected to the first outdoor heat exchanger 21, and the second outdoor valve port 532 is connected to the second outdoor heat exchanger 22.

[0057] First, the reversing valve 5 is driven to connect the first outdoor valve port 531 to the second valve port 52, and the second outdoor valve port 532 is connected to the first valve port 51. The first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 are respectively connected to the second valve port 52 through the corresponding fourth valve port 54.

[0058] Compressor 1 compresses the refrigerant into a high-temperature, high-pressure gaseous refrigerant, which is then discharged from outlet 12 to the second valve port 52. It then enters the first and second indoor units via the fourth valve port 54 for heating. After condensation and heat release, the refrigerant transforms into a low-temperature, high-pressure liquid refrigerant. The refrigerant flowing from the first and second indoor units merges and, after passing through a throttling device, is reduced in pressure to become a low-temperature, low-pressure liquid refrigerant before flowing to the second outdoor heat exchanger 22. The high-temperature, high-pressure gaseous refrigerant also flows through the first outdoor valve port 531 to the first outdoor heat exchanger 21, where it releases heat to defrost it. The low-temperature, high-pressure liquid refrigerant, after releasing heat, merges with the refrigerant flowing from the first and second indoor units, and together they pass through a throttling device to reduce pressure to become a low-temperature, low-pressure liquid refrigerant before flowing to the second outdoor heat exchanger 22. The refrigerant absorbs heat and transforms in the second outdoor heat exchanger 22, which acts as an evaporator. The low-temperature, low-pressure gaseous refrigerant then flows through the second outdoor valve port 532 to the first valve port 51, where it is drawn in by the air inlet 11 of the compressor 1 and compressed again, thus completing the cycle.

[0059] After the first outdoor heat exchanger 21 has finished defrosting, switch the valve port of the reversing valve 5 to connect the second outdoor valve port 532 to the second outdoor valve port 52, connect the first outdoor valve port 531 to the first outdoor valve port 51, and leave the fourth valve port 54 unchanged.

[0060] Compressor 1 compresses the refrigerant into a high-temperature, high-pressure gaseous refrigerant, which is then discharged from outlet 12 to the second valve port 52. It then enters the first and second indoor units via the fourth valve port 54 for heating. The refrigerant flows through the first and second indoor units in the same direction as in the previous process, releasing heat in both units. The high-temperature, high-pressure gaseous refrigerant also flows through the second outdoor valve port 532 to the second outdoor heat exchanger 22, where it releases heat to defrost. The released low-temperature, high-pressure liquid refrigerant then merges with the refrigerant flowing from the first and second indoor units, and together they pass through a throttling device to reduce pressure, transforming into a low-temperature, low-pressure liquid refrigerant, which then flows to the first outdoor heat exchanger 21. In the first outdoor heat exchanger 21, the refrigerant absorbs heat and undergoes transformation, effectively evaporating. The low-temperature, low-pressure gaseous refrigerant then flows through the first outdoor valve port 531 to the first valve port 51, where it is drawn in by the compressor 1's inlet port 11 and compressed again, thus completing the cycle.

[0061] After the above process, both the first outdoor heat exchanger 21 and the second outdoor heat exchanger 22 can be heated and defrosted, which can improve the working efficiency of the outdoor heat exchange unit 2 in the following operation. For example, it can be like this Figure 6As shown, the switching valve 5 connects the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 to the second valve port 52 via the corresponding fourth valve port 54, and connects the first outdoor valve port 531 and the second outdoor valve port 532 to the first valve port 51. After defrosting, the heat exchange efficiency of the outdoor heat exchange unit 2 is improved, thereby increasing the refrigerant heat exchange speed and improving the heating efficiency of the indoor space, allowing the indoor temperature to rise quickly in winter.

[0062] In some embodiments of this utility model, such as Figure 4 As shown, the air conditioning system 100 has a dehumidification and reheat mode. In the dehumidification and reheat mode, the second indoor heat exchange unit 4 is connected to the second valve port 52 through the corresponding fourth valve port 54, the first indoor heat exchange unit 3 is connected to the first valve port 51 through the corresponding fourth valve port 54, and the outdoor heat exchange unit 2 is connected to the second valve port 52 through the reversing valve 5.

[0063] The second indoor heat exchange unit 4 is connected to the second valve port 52 via the corresponding fourth valve port 54. The second indoor heat exchanger 40 functions as a condenser, in which the refrigerant releases heat. The first indoor heat exchange unit 3 is connected to the first valve port 51 via the corresponding fourth valve port 54. The first indoor heat exchange unit 3 functions as an evaporator, in which the refrigerant absorbs heat. The outdoor heat exchange unit 2 is connected to the second valve port 52 via the third valve port 53. The outdoor heat exchanger 20 functions as a condenser.

[0064] The first indoor heat exchange unit 3 performs cooling, and the second indoor heat exchange unit 4 performs heating. The airflow passes through the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 in sequence. When the airflow passes through the first indoor heat exchange unit 3, the moisture in the air liquefies upon cooling, and the air is cooled and dehumidified. The airflow continues to flow through the second indoor heat exchange unit 4 and is heated. This reduces the moisture content of the air without lowering the temperature of the airflow, thus mitigating the discomfort caused by the drop in temperature during indoor dehumidification. The dehumidification and reheat mode of the air conditioning system 100 can achieve dehumidification at a normal temperature.

[0065] In some embodiments of this utility model, such as Figure 4 As shown, a first throttling element 71 is provided between the second end of the outdoor heat exchange unit 2 and the second end of the first indoor heat exchange unit 3, and a second throttling element 72 is provided between the second end of the outdoor heat exchange unit 2 and the second end of the second indoor heat exchange unit 4. The second end of the first indoor heat exchange unit 3 is connected to the second end of the second indoor heat exchange unit 4 through the first throttling element 71 and through the second throttling element 72.

[0066] In the dehumidification and reheat mode of the air conditioning system 100, the compressor 1 compresses the refrigerant into a high-temperature, high-pressure gaseous refrigerant, which is then discharged from the outlet 12 to the second valve port 52. The refrigerant enters the outdoor heat exchange unit 2 through the third valve port 53 for heating. After condensation and heat release, the refrigerant is converted into a low-temperature, high-pressure liquid refrigerant. Furthermore, the high-temperature, high-pressure gaseous refrigerant flows towards the fourth valve port 54, which is connected to the second indoor heat exchange unit 4. The refrigerant releases heat in the second indoor heat exchanger 40 and subsequently converts into a low-temperature, high-pressure liquid refrigerant.

[0067] The low-temperature, high-pressure liquid refrigerant, after releasing heat, still needs to be depressurized by a throttling element before it can absorb heat in the evaporator. Therefore, a first throttling element 71 is provided between the outdoor heat exchange unit 2 and the first indoor heat exchange unit 3. The refrigerant flowing out of the outdoor heat exchange unit 2 and the condensate flowing out of the second indoor heat exchange unit 4 merge, and after being depressurized by the first throttling element 71, it flows to the first indoor heat exchange unit 3, where the low-temperature, low-pressure liquid refrigerant absorbs heat.

[0068] When the refrigerant flows from the outdoor heat exchange unit 2 to the first indoor heat exchange unit 3, the first throttling element 71 is set to throttle and reduce the pressure of the refrigerant so that the refrigerant can evaporate and absorb heat in the first indoor heat exchange unit 3. Similarly, when the refrigerant flows from the outdoor heat exchange unit 2 to the second indoor heat exchange unit 4, the second throttling element 72 is set to throttle and reduce the pressure of the refrigerant so that the refrigerant can evaporate and absorb heat in the second indoor heat exchange unit 4.

[0069] Therefore, a first throttling element 71 is provided between the outdoor heat exchange unit 2 and the first indoor heat exchange unit 3, and a second throttling element 72 is provided between the outdoor heat exchange unit 2 and the second indoor heat exchange unit 4, enabling the air conditioning system 100 to operate in different modes. Furthermore, the first throttling element 71 and the second throttling element 72 can operate independently of each other, reducing mutual interference and improving the operational stability of the air conditioning system 100.

[0070] The first throttling element 71 and the second throttling element 72 not only throttle and reduce pressure, but also regulate the subcooling of the refrigerant, further improving the operational stability of the air conditioning system 100. For example... Figure 4 As shown, in the dehumidification and reheat mode of the air conditioning system 100, the refrigerant flowing out of the second indoor heat exchanger 40 first flows to the second throttling element 72, and then merges with the refrigerant flowing out of the outdoor heat exchange unit 2. Together, they pass through the first throttling element 71 to reduce pressure before flowing to the first indoor heat exchange unit 3. At this time, the second throttling element 72 adjusts the subcooling of the refrigerant flowing out of the second indoor heat exchanger 40, which helps to improve the heat exchange efficiency of the air conditioning system 100.

[0071] In some embodiments of this utility model, such as Figure 4As shown, there are multiple first indoor heat exchangers 30 and multiple second indoor heat exchangers 40. Each first indoor heat exchanger 30 corresponds to a first throttling element 71, and each second indoor heat exchanger 40 corresponds to a second throttling element 72.

[0072] The first indoor heat exchange unit 3 includes multiple first indoor heat exchangers 30, and the second indoor unit includes multiple second indoor heat exchangers 40. The first indoor heat exchangers 30 and the second indoor heat exchangers 40 are respectively equipped with throttling elements, which can improve the working reliability of the air conditioning system 100.

[0073] The number of the first indoor heat exchanger 30 and the second indoor heat exchanger 40 can be the same or different, which can be selected according to actual needs.

[0074] The first indoor heat exchanger 30 and the second indoor heat exchanger 40 can be arranged separately in different spaces of the room. By setting the reversing valve 5, the first indoor heat exchanger 30 and the second indoor heat exchanger 40 can achieve cooling and heating respectively, thereby meeting the cooling and heating needs of different indoor spaces and improving the functionality of the air conditioning system 100.

[0075] The first indoor heat exchanger 30 and the second indoor heat exchanger 40 can also be arranged together. In the dehumidification and reheat mode of the air conditioning system 100, the first indoor heat exchanger 30 performs cooling and the second indoor heat exchanger 40 performs heating. The airflow passes through the first indoor heat exchanger 30 and the second indoor heat exchanger 40 in sequence, which can reduce the moisture content of the air and prevent the air temperature from dropping, thus improving the situation of user discomfort caused by the drop in temperature during indoor dehumidification.

[0076] In some embodiments of this utility model, such as Figure 4 As shown, the number of first indoor heat exchangers 30 is greater than or equal to the number of second indoor heat exchangers 40.

[0077] The number of first indoor heat exchangers 30 can be greater than the number of second indoor heat exchangers 40, and only the first indoor heat exchangers 30 can be installed in the storage space. When the air conditioning system 100 is in dehumidification mode, there is no need to compensate for the temperature of the storage space; the low temperature not only dehumidifies the storage space but also helps preserve the items. Therefore, the arrangement of the second indoor heat exchangers 40 can be reduced, thereby saving manufacturing costs.

[0078] In some other embodiments of this utility model, the number of first indoor heat exchangers 30 is equal to the number of second indoor heat exchangers 40, and the first indoor heat exchangers 30 and the second indoor heat exchangers 40 are arranged in a one-to-one correspondence.

[0079] When the air conditioning system 100 operates in dehumidification and reheat mode, the airflow passes through the first indoor heat exchanger 30 and the second indoor heat exchanger 40 in sequence. This can reduce the moisture content of the air without lowering the temperature of the airflow, thus improving the discomfort caused to users by the drop in temperature during indoor dehumidification.

[0080] The following is a reference appendix. Figure 4 Briefly describe the working process of the air conditioning system 100 in dehumidification and reheat mode in some specific embodiments of this utility model. Figure 4 The middle arrow indicates the direction of refrigerant flow.

[0081] The first indoor heat exchange unit 3 includes three first indoor heat exchangers 30, namely the first heat exchanger 31, the second heat exchanger 32 and the third heat exchanger 33. The second indoor heat exchange unit 4 includes two second indoor heat exchangers 40, namely the fourth heat exchanger 41 and the fifth heat exchanger 42. The first heat exchanger 31 and the fourth heat exchanger 41 are arranged to form the first indoor heat exchange system 61. The second heat exchanger 32 and the third heat exchanger 33 are arranged to form the second indoor heat exchange system 62. The third heat exchanger 33 is arranged separately to form the third indoor heat exchange system 63.

[0082] The reversing valve 5 includes two fourth valve ports 54, which are respectively connected to the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4. The fourth valve ports 54 include a first indoor valve port 541 and a second indoor valve port 542. The first indoor valve port 541 is connected to the first indoor heat exchange unit 3, and the second indoor valve port 542 is connected to the second indoor heat exchange unit 4. That is, the first indoor valve port 541 is connected to the first heat exchanger 31, the second heat exchanger 32, and the third heat exchanger 33, respectively, and the second indoor valve port 542 is connected to the fourth heat exchanger 41 and the fifth heat exchanger 42, respectively.

[0083] The drive reversing valve 5 connects the first indoor valve port 541 to the first valve port 51, connects the second indoor valve port 542 to the second valve port 52, and connects multiple third valve ports 53 to the second valve port 52.

[0084] Compressor 1 compresses the refrigerant into a high-temperature, high-pressure gaseous refrigerant, which is then discharged from outlet 12 to the second valve port 52. The refrigerant enters the outdoor heat exchange unit 2 through the third valve port 53 for heating. After condensation and heat release, the refrigerant is converted into a low-temperature, high-pressure liquid refrigerant. Furthermore, the high-temperature, high-pressure gaseous refrigerant flows towards the second indoor valve port 542, where it releases heat in the fourth heat exchanger 41 and the fifth heat exchanger 42, subsequently converting into a low-temperature, high-pressure liquid refrigerant.

[0085] The refrigerant flowing from the fourth heat exchanger 41 undergoes subcooling adjustment by the second throttling element 72, then merges with the refrigerant flowing from the outdoor heat exchange unit 2. Both refrigerants pass through the first throttling element 71 for pressure reduction before flowing together to the first heat exchanger 31. The low-temperature, low-pressure liquid refrigerant absorbs heat in the first heat exchanger 31. The first heat exchanger 31 provides cooling, while the fourth heat exchanger 41 provides heating. The airflow passes sequentially through the first heat exchanger 31 and the fourth heat exchanger 41, reducing the humidity content of the air while maintaining its temperature. This allows for room-temperature dehumidification within the space where the first indoor heat exchange system 61 is located.

[0086] The refrigerant flowing from the fifth heat exchanger 42 undergoes subcooling adjustment by the second throttling element 72, then merges with the refrigerant flowing from the outdoor heat exchange unit 2. Both refrigerants pass through the first throttling element 71 for pressure reduction before flowing together to the second heat exchanger 32. The low-temperature, low-pressure liquid refrigerant absorbs heat in the second heat exchanger 32. The second heat exchanger 32 provides cooling, while the fifth heat exchanger 42 provides heating. The airflow passes sequentially through the second and fifth heat exchangers 32, reducing the humidity of the air while maintaining its temperature. This allows for room-temperature dehumidification within the space where the second indoor heat exchange system 62 is located.

[0087] The refrigerant flowing out from the outdoor heat exchange unit 2 is depressurized by the first throttling element 71 and flows to the third heat exchanger 33. The low-temperature and low-pressure liquid refrigerant absorbs heat in the third heat exchanger 33, which enables dehumidification in the space where the third indoor heat exchange system 63 is arranged.

[0088] The low-temperature, low-pressure gaseous refrigerant flowing out from the first heat exchanger 31, the second heat exchanger 32 and the third heat exchanger 33 merge together, flow through the first indoor valve port 541 to the first valve port 51, and is drawn in by the air inlet 11 of the compressor 1 for compression again, thus circulating.

[0089] In some embodiments of this utility model, the air conditioning system 100 further includes an indoor air conditioning unit, which includes a casing and at least one first indoor heat exchanger 30 and at least one second indoor heat exchanger 40 disposed within the casing. The first indoor heat exchanger 30 and the second indoor heat exchanger 40 are arranged along the height direction or in a front-to-back arrangement along the airflow direction.

[0090] At least one first indoor heat exchanger 30 and at least one second indoor heat exchanger 40 are housed together within the same casing, facilitating the operation of the air conditioning system 100 in dehumidification and reheat mode. When the air conditioning system 100 operates in dehumidification and reheat mode, the airflow passes sequentially through the cooperating first indoor heat exchanger 30 and second indoor heat exchanger 40, reducing the moisture content of the air without lowering its temperature, thus mitigating user discomfort caused by temperature drops during indoor dehumidification. By housing the first indoor heat exchanger 30 and the second indoor heat exchanger 40 within the same casing, the airflow path is shortened, improving operating efficiency.

[0091] The first indoor heat exchanger 30 and the second indoor heat exchanger 40 are arranged at intervals in the vertical direction, which can reduce the size of the casing in the horizontal direction; the first indoor heat exchanger 30 and the second indoor heat exchanger 40 can also be arranged one after the other in the airflow direction, with the first indoor heat exchanger 30 located upstream of the second indoor heat exchanger 40.

[0092] In some embodiments of this utility model, the indoor unit of the air conditioner includes multiple housings, and multiple first indoor heat exchangers 30 and multiple second indoor heat exchangers 40 are disposed in different housings.

[0093] In some embodiments of this utility model, the air conditioning system 100 further includes an outdoor unit, which includes a housing and a plurality of outdoor heat exchangers 20 disposed within the housing. The plurality of outdoor heat exchangers 20 are arranged along the height direction or along the airflow direction.

[0094] Multiple outdoor heat exchangers 20 can be arranged vertically, which can reduce the size of the outer shell in the horizontal direction and facilitate the arrangement of the outer shell; or the outdoor heat exchangers 20 can be arranged front and back along the airflow direction, which can facilitate the heat exchange between multiple outdoor heat exchangers 20 and the external airflow, and can also reduce the size of the outer shell in the vertical direction, lower the center of gravity of the outer shell, and improve the stability of the outer shell arrangement.

[0095] Optionally, multiple indoor heat exchangers 20 can be connected in parallel and housed in the same housing to improve the operating efficiency of the outdoor heat exchange unit 2.

[0096] In some embodiments of this utility model, the air conditioning system 100 further includes a plurality of outdoor throttling elements. The outdoor throttling elements are disposed inside the housing and connected between the second end of the outdoor heat exchanger 20 and the second end of the first indoor heat exchange unit 3. That is, the outdoor throttling elements are disposed between the second end of the outdoor heat exchanger 20 and the second end of the second indoor heat exchange unit 4. Each outdoor heat exchanger 20 has an outdoor throttling element connected in series at its second end, and the second ends of each outdoor heat exchanger 20 are connected to each other through the corresponding outdoor throttling element.

[0097] When the refrigerant flows from the outdoor heat exchange unit 2 to the first indoor heat exchange unit 3 and / or the second indoor heat exchange unit 4, the low-temperature, high-pressure liquid refrigerant flowing out of the outdoor heat exchanger 20 is throttled and depressurized by the outdoor throttling element. The refrigerant passing through the outdoor throttling element is converted into a low-temperature, low-pressure liquid and then flows into the first indoor unit 33 and / or the second indoor heat exchange unit 4 to evaporate and absorb heat.

[0098] By connecting an outdoor throttling element in series at the second end of each outdoor heat exchanger 20, the air conditioning system 100 can operate in different modes, and the different outdoor throttling elements can operate independently of each other, which can reduce mutual interference and improve the working stability of the air conditioning system 100.

[0099] The second end of each outdoor heat exchanger 20 is connected to each other through a corresponding outdoor throttling element. The refrigerant that has been throttled and depressurized flows together, which improves the mixing of refrigerants at different pressures and reduces the impact on the normal operation of the air conditioning system 100.

[0100] In addition, the outdoor throttling element can not only reduce pressure, but also regulate the subcooling of the refrigerant, which can further improve the working stability of the air conditioning system.

[0101] In some embodiments of this utility model, an outdoor throttling element is connected in series at the second end of each outdoor heat exchanger 20, and the circuits connected in series with the outdoor heat exchanger 20 and the outdoor throttling element are connected in parallel to each other, so that different outdoor heat exchangers 20 are connected in parallel.

[0102] In some embodiments of this utility model, such as Figure 1 As shown, a first throttling element 71 is provided between the second end of the outdoor heat exchange unit 2 and the second end of the first indoor heat exchange unit 3, and a second throttling element 72 is provided between the second end of the outdoor heat exchange unit 2 and the second end of the second indoor heat exchange unit 4. The second end of the first indoor heat exchange unit 3 is connected to the second end of the second indoor heat exchange unit 4 through the first throttling element 71 and through the second throttling element 72.

[0103] When the refrigerant flows from the outdoor heat exchange unit 2 to the first indoor heat exchange unit 3, the first throttling element 71 can throttle and reduce the pressure of the refrigerant, thereby causing the refrigerant to evaporate and absorb heat in the first indoor heat exchange unit 3; when the refrigerant flows from the outdoor heat exchange unit 2 to the second indoor heat exchange unit 4, the second throttling element 72 can throttle and reduce the pressure of the refrigerant, thereby causing the refrigerant to evaporate and absorb heat in the second indoor heat exchange unit 4.

[0104] Furthermore, when the refrigerant flows from the first indoor heat exchange unit 3 to the outdoor heat exchange unit 2, the first throttling element 71 can also adjust the subcooling of the refrigerant, which can improve the working efficiency of the air conditioning system 100; when the refrigerant flows from the second indoor heat exchange unit 4 to the outdoor heat exchange unit 2, the second throttling element 72 can also adjust the subcooling of the refrigerant, which can improve the working efficiency of the air conditioning system 100.

[0105] like Figure 1 and Figure 4As shown, the air conditioning system 100 also includes an economizer 8, which has a first heat exchange channel 81 and a second heat exchange channel 82 that exchange heat with each other. The first end 811 of the first heat exchange channel 81 is connected to each first throttling element 71 and each second throttling element 72. The second end 812 of the first heat exchange channel 81 is connected to the outdoor heat exchange unit 2. The inlet 821 of the second heat exchange channel 82 is connected between the outdoor heat exchange unit 2 and the second end 812 of the first heat exchange channel 81 through a third throttling element 73. The outlet 822 of the second heat exchange channel 82 is connected to the air inlet 11 or the air supply port of the compressor 1.

[0106] When the refrigerant flows from the outdoor heat exchange unit 2 to the first indoor heat exchange unit 3 and / or the second indoor heat exchange unit 4, the low-temperature, high-pressure liquid refrigerant flowing out of the outdoor heat exchange unit 2 is split. One stream flows into the first heat exchange channel 81 from the second end 812, and the other stream flows into the second heat exchange channel 82 from the inlet 821. The refrigerant flowing into the second heat exchange channel 82 is first throttled and depressurized by the third throttling element 73. As a result, the refrigerant entering the second heat exchange channel 82 absorbs heat, thereby lowering the temperature of the refrigerant in the first heat exchange channel 81. This increases the unit cooling capacity of the refrigerant flowing into the first indoor heat exchange unit 3 and / or the second indoor heat exchange unit 4, thus improving the cooling efficiency of the refrigerant in the first indoor heat exchange unit 3 and / or the second indoor heat exchange unit 4.

[0107] When the refrigerant flows from the first indoor heat exchange unit 3 and / or the second indoor heat exchange unit 4 to the outdoor heat exchange unit 2, it flows into the first heat exchange channel 81 from the first end 811 and out from the second end 812. At this time, the refrigerant is divided into two streams. One stream flows to the outdoor heat exchange unit 2 after being throttled and depressurized by the throttling element. After absorbing heat in the outdoor heat exchange unit 2 and being converted into a low-temperature, low-pressure gaseous refrigerant, it flows back to the air inlet 11 of the compressor 1. The other stream flows into the second heat exchange channel 82 from the inlet 821 after being depressurized by the third throttling element 73. The refrigerant absorbs heat in the second heat exchange channel 82, and the second heat exchange channel 82 and the refrigerant exchange heat with the refrigerant in the first heat exchange channel 81, subcooling the refrigerant in the first heat exchange channel 81. Then, it flows back to the air inlet 11 of the compressor 1 from the outlet 822 of the second heat exchange channel 82, thereby improving the working efficiency of the air conditioning system 100.

[0108] By setting up the economizer 8, a subcooling effect can be achieved, cooling the liquid refrigerant to below the saturation condensation temperature corresponding to its current pressure. This increases the unit cooling capacity of the refrigerant and reduces the generation of flash gas, thereby improving the working efficiency of the air conditioning system 100 and reducing the energy consumption of the compressor 1.

[0109] In some embodiments of this utility model, the economizer 8 is a plate heat exchanger.

[0110] In some embodiments of this utility model, such as Figure 1 and Figure 4 As shown, the air conditioning system 100 also includes a one-way throttle valve 9, which is connected between the outdoor heat exchange unit 2 and the economizer 8, and is used to throttle the refrigerant flowing from the economizer 8 to the outdoor heat exchange unit 2.

[0111] When the refrigerant flows from the first indoor heat exchange unit 3 and / or the second indoor heat exchange unit 4 to the outdoor heat exchange unit 2, the refrigerant is throttled and depressurized by the one-way throttle valve 9, so that the refrigerant evaporates and absorbs heat in the outdoor heat exchange unit 2.

[0112] The refrigerant flows into the first heat exchange channel 81 from the first end 811 and flows out from the second end 812 of the first heat exchange channel 81. At this time, the refrigerant is divided into two streams. One stream of refrigerant flows to the outdoor heat exchange unit 2 and is throttled and depressurized by the one-way throttle valve 9. Then, after absorbing heat in the outdoor heat exchange unit 2 and being converted into a low-temperature and low-pressure gaseous refrigerant, it flows back to the air inlet 11 of the compressor 1.

[0113] In some embodiments of this utility model, the one-way throttle valve 9 is also used to ensure the smooth one-way flow of refrigerant from the outdoor heat exchange unit 2 to the economizer 8.

[0114] When the refrigerant flows from the outdoor heat exchange unit 2 to the first indoor heat exchange unit 3 and / or the second indoor heat exchange unit 4, the refrigerant is throttled and depressurized by the first throttling element 71 and / or the second throttling element 72. At this time, the throttling valve 9 is closed, and the refrigerant flows smoothly along the one-way valve 91 to the economizer 8.

[0115] In some embodiments of this utility model, such as Figure 4 As shown, the one-way throttle valve 9 includes a one-way valve 91 and a throttle valve 92 connected in parallel.

[0116] In some embodiments of this utility model, such as Figure 5 As shown, the air conditioning system 100 has a heating mode. The first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 are respectively connected to the second valve port 52 through the corresponding fourth valve port 54. The outdoor heat exchange unit 2 is connected to the first valve port 51 through the reversing valve 5.

[0117] Both the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 play a condensing role. The refrigerant releases heat in the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4, while the outdoor heat exchange unit 2 plays an evaporating role. The refrigerant absorbs heat in the outdoor heat exchange unit 2.

[0118] By setting up a first indoor heat exchange unit 3 and a second indoor heat exchange unit 4, the refrigerant circulation of the air conditioning system 100 can be increased, thereby improving the heating efficiency of the air conditioning system 100. Furthermore, the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 can be placed in different areas of the room, thereby increasing the radiation range of the air conditioning system 100 and improving its working efficiency.

[0119] The following is a reference appendix. Figure 5 Briefly describe the working process of the air conditioning system 100 in heating mode according to some specific embodiments of this utility model. Figure 5 The middle arrow indicates the direction of refrigerant flow.

[0120] The outdoor heat exchange unit 2 includes a first outdoor heat exchanger 21 and a second outdoor heat exchanger 22. The reversing valve 5 includes two third valve ports 53 that are respectively connected to the first outdoor heat exchanger 21 and the second outdoor heat exchanger 22. The first outdoor valve port 531 is connected to the first outdoor heat exchanger 21, and the second outdoor valve port 532 is connected to the second outdoor heat exchanger 22.

[0121] The first indoor heat exchange unit 3 includes three first indoor heat exchangers 30, namely a first heat exchanger 31, a second heat exchanger 32, and a third heat exchanger 33. The second indoor heat exchange unit 4 includes two second indoor heat exchangers 40, namely a fourth heat exchanger 41 and a fifth heat exchanger 42. The first heat exchanger 31 and the fourth heat exchanger 41 are arranged correspondingly, the second heat exchanger 32 and the third heat exchanger 33 are arranged correspondingly, and the third heat exchanger 33 is arranged separately. The reversing valve 5 includes two fourth valve ports 54, which are respectively connected to the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4. The fourth valve ports 54 include a first indoor valve port 541 and a second indoor valve port 542. The first indoor valve port 541 is connected to the first indoor heat exchange unit 3, and the second indoor valve port 542 is connected to the second indoor heat exchange unit 4. That is, the first indoor valve port 541 is connected to the first heat exchanger 31, the second heat exchanger 32 and the third heat exchanger 33 respectively, and the second indoor valve port 542 is connected to the fourth heat exchanger 41 and the fifth heat exchanger 42 respectively.

[0122] The drive reversing valve 5 connects the first indoor valve port 541 to the second valve port 52, connects the second indoor valve port 542 to the second valve port 52, connects the first outdoor valve port 531 to the first valve port 51, and connects the second outdoor valve port 532 to the first valve port 51.

[0123] Compressor 1 compresses the refrigerant into a high-temperature, high-pressure gaseous refrigerant, which is then discharged from outlet 12 to the second valve 52. The refrigerant passes through the first indoor valve 541 and enters the first heat exchanger 31, the second heat exchanger 32, and the third heat exchanger 33 to release heat. The refrigerant passes through the second indoor valve 542 and enters the fourth heat exchanger 41 and the fifth heat exchanger 42 to release heat. The low-temperature, high-pressure liquid refrigerant flowing out of the first heat exchanger 31 merges with the low-temperature, high-pressure liquid refrigerant flowing out of the fourth heat exchanger 41. The low-temperature, high-pressure liquid refrigerant flowing out of the second heat exchanger 32 merges with the low-temperature, high-pressure liquid refrigerant flowing out of the fifth heat exchanger 42. The low-temperature, high-pressure liquid refrigerant flowing out of the third heat exchanger 33 then merges with the two aforementioned refrigerant streams and flows together to the economizer 8.

[0124] Low-temperature, high-pressure liquid refrigerant flows into the first heat exchange channel 81 from the first end 811 and flows out from the second end 812 of the first heat exchange channel 81. At this time, the refrigerant is divided into two streams. One stream is throttled and depressurized by the one-way throttle valve 9 and flows to the first outdoor heat exchanger 21 and the second outdoor heat exchanger 22 respectively. After absorbing heat in the outdoor heat exchange unit 2 and being converted into low-temperature, low-pressure gaseous refrigerant, it flows to the first valve port 51. Another stream, after being depressurized by the third throttling element 73, flows into the second heat exchange channel 82 through the inlet 821. The refrigerant absorbs heat in the second heat exchange channel 82. The second heat exchange channel 82 and the refrigerant exchange heat with the refrigerant in the first heat exchange channel 81, subcooling the refrigerant in the first heat exchange channel 81. Then, it flows out from the outlet 822 of the second heat exchange channel 82 and merges with the low-temperature, low-pressure gaseous refrigerant flowing out of the first valve port 51 before flowing back to the air inlet 11 of the compressor 1 for circulation.

[0125] In some embodiments of this utility model, such as Figure 6 As shown, the air conditioning system 100 has a cooling mode. The outdoor heat exchange unit 2 is connected to the second valve port 52 through the reversing valve 5, and the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 are connected to the first valve port 51 through the corresponding fourth valve port 54.

[0126] Both the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 function as evaporators, with the refrigerant absorbing heat in both units. The outdoor heat exchange unit 2 functions as a condenser. By setting up the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4, the refrigerant circulation volume of the air conditioning system 100 can be increased, thereby improving the cooling efficiency of the system. Furthermore, the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 can be placed in different areas of the room, thus increasing the radiation range of the air conditioning system 100 and improving its operating efficiency.

[0127] The following is a reference appendix. Figure 6 Briefly describe the working process of the air conditioning system 100 in cooling mode according to some specific embodiments of this utility model. Figure 6The middle arrow indicates the direction of refrigerant flow.

[0128] The outdoor heat exchange unit 2 includes a first outdoor heat exchanger 21 and a second outdoor heat exchanger 22. The reversing valve 5 includes two third valve ports 53 that are respectively connected to the first outdoor heat exchanger 21 and the second outdoor heat exchanger 22. The first outdoor valve port 531 is connected to the first outdoor heat exchanger 21, and the second outdoor valve port 532 is connected to the second outdoor heat exchanger 22.

[0129] The first indoor heat exchange unit 3 includes three first indoor heat exchangers 30, namely a first heat exchanger 31, a second heat exchanger 32, and a third heat exchanger 33. The second indoor heat exchange unit 4 includes two second indoor heat exchangers 40, namely a fourth heat exchanger 41 and a fifth heat exchanger 42. The first heat exchanger 31 and the fourth heat exchanger 41 are arranged correspondingly, the second heat exchanger 32 and the third heat exchanger 33 are arranged correspondingly, and the third heat exchanger 33 is arranged separately. The reversing valve 5 includes two fourth valve ports 54, which are respectively connected to the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4. The fourth valve ports 54 include a first indoor valve port 541 and a second indoor valve port 542. The first indoor valve port 541 is connected to the first indoor heat exchange unit 3, and the second indoor valve port 542 is connected to the second indoor heat exchange unit 4. That is, the first indoor valve port 541 is connected to the first heat exchanger 31, the second heat exchanger 32 and the third heat exchanger 33 respectively, and the second indoor valve port 542 is connected to the fourth heat exchanger 41 and the fifth heat exchanger 42 respectively.

[0130] The drive reversing valve 5 connects the first indoor valve port 541 to the first valve port 51, connects the second indoor valve port 542 to the first valve port 51, connects the first outdoor valve port 531 to the second valve port 52, and connects the second outdoor valve port 532 to the second valve port 52.

[0131] The compressor 1 compresses the refrigerant into a high-temperature, high-pressure gaseous refrigerant and discharges it from the outlet 12 to the second valve 52. The refrigerant enters the first outdoor heat exchanger 21 and the second outdoor heat exchanger 22 through the first outdoor valve 531 and the second outdoor valve 532 respectively to release heat. The low-temperature, high-pressure liquid refrigerant flowing out of the first outdoor heat exchanger 21 and the second outdoor heat exchanger 22 merge together and then flow smoothly to the economizer 8 through the one-way valve 91 of the one-way throttle valve 9.

[0132] The outflowing low-temperature, high-pressure liquid refrigerant is split, with one stream flowing into the first heat exchange channel 81 and the other into the second heat exchange channel 82. The refrigerant flowing into the second heat exchange channel 82 is first throttled and depressurized by the third throttling element 73, transforming it into a low-temperature, low-pressure gaseous refrigerant. After passing through the second heat exchange channel 82, it finally flows back to the compressor 1's inlet 11. The refrigerant in the second heat exchange channel 82 vaporizes and absorbs heat, exchanging heat with the refrigerant in the first heat exchange channel 81. This reduces the temperature of the refrigerant in the first heat exchange channel 81, increases the refrigerant's unit cooling capacity, and thus improves the refrigerant's cooling efficiency in the first and second indoor heat exchange units 3 and 4.

[0133] The low-temperature, high-pressure liquid refrigerant flowing out of the first heat exchange channel 81 is divided into three streams, which flow to the branches of the first heat exchanger 31 and the fourth heat exchanger 41, the branches of the second heat exchanger 32 and the fifth heat exchanger 42, and the third heat exchanger 33, respectively. The refrigerant flowing to the first heat exchanger 31 is throttled and depressurized by the first throttling element 71 before entering the first heat exchanger 31 to evaporate and absorb heat. The refrigerant flowing to the fourth heat exchanger 41 is throttled and depressurized by the second throttling element 72 before entering the fourth heat exchanger 41 to evaporate and absorb heat. The refrigerant flowing to the second heat exchanger 32 is throttled and depressurized by the first throttling element 71 before entering the second heat exchanger 32 to evaporate and absorb heat. The refrigerant flowing to the fifth heat exchanger 42 is throttled and depressurized by the second throttling element 72 before entering the fifth heat exchanger 42 to evaporate and absorb heat. The refrigerant flowing to the third heat exchanger 33 is throttled and depressurized by the first throttling element 71 before entering the third heat exchanger 33 to evaporate and absorb heat.

[0134] The low-temperature, low-pressure gaseous refrigerant flowing from the first heat exchanger 31, the second heat exchanger 32, and the third heat exchanger 33 merge and flow to the first indoor valve port 541. The low-temperature, low-pressure gaseous refrigerant flowing from the fourth heat exchanger 41 and the fifth heat exchanger 42 merge and flow together to the second indoor valve port 542. Both the first indoor valve port 541 and the second indoor valve port 542 are connected to the first valve port 51. The low-temperature, low-pressure gaseous refrigerant flowing from the first valve port 51 merges with the low-temperature, low-pressure gaseous refrigerant flowing from the second heat exchange channel 82 of the economizer 8 and flows together back to the air inlet 11 of the compressor 1 for circulation.

[0135] In some embodiments of this application, the reversing valve 5 is configured to have multiple switching states so that the air conditioning system 100 has multiple operating modes. In any switching state, at least one heat exchange valve port 5a is connected to the second valve port 52, and the remaining heat exchange valve ports 5a are connected to the first valve port 51.

[0136] At least one heat exchange valve port 5a is connected to the second valve port 52 to connect to the outlet port 12 of the compressor 1, and the remaining heat exchange valve ports 5a are connected to the first valve port 51 to connect to the inlet port 11 of the compressor 1, thereby forming a complete refrigerant circuit.

[0137] The reversing valve 5 is constructed such that some heat exchange valve ports 5a are connected to the second valve port 52, while the remaining valve ports are all connected to the first valve port 51. All heat exchange valve ports 5a of the reversing valve 5 are in operation, which improves design redundancy, enhances structural compactness, and reduces the occurrence of refrigerant leakage in the switching valve 5.

[0138] In some embodiments of this utility model, such as Figure 7 and Figure 8 As shown, the reversing valve 5 includes a valve body 55 and a valve core 56. The valve body 55 has a valve cavity 551. A first valve port 51, a second valve port 52, and a plurality of heat exchange valve ports 5a are all formed on the valve body 55. The valve core 56 is rotatably disposed in the valve cavity 551 around the central axis of the valve body 55, and divides the valve cavity 551 into a first connecting cavity 5511 and a second connecting cavity 5512. The first connecting cavity 5511 is connected to the first valve port 51, and the second connecting cavity 5512 is connected to the second valve port 52.

[0139] The valve body 55 is the main component of the reversing valve 5. The valve body 55 has a valve cavity 551. The first valve port 51, the second valve port 52 and multiple heat exchange valve ports 5a are all formed on the valve body 55 and connected to the valve cavity 551. The reversing valve 5 allows the refrigerant to flow into the valve cavity 551 and then flow to a specific valve port, thereby connecting the specific valve ports.

[0140] The valve core 56 is disposed inside the valve body 55, and the valve core 56 can rotate relative to the valve body 55 along the central axis of the valve body 55. The valve core 56 can divide the valve cavity 551 into a first communicating cavity 5511 and a second communicating cavity 5512 that are isolated from each other. The first communicating cavity 5511 is always connected to the first valve port 51, and the second communicating cavity 5512 is always connected to the second valve port 52.

[0141] The valve core 56 can switch the interconnection of multiple valve ports by rotating within the valve body 55. The reversing valve 5 has a simple structure and is easy to operate.

[0142] For example, such as Figure 2 and Figure 8 As shown, or as Figure 3 and Figure 9As shown, the air conditioning system 100 has a heating defrosting mode. In the heating defrosting mode, the valve core 56 rotates to a third valve port 53 that is isolated in the first connecting cavity 5511, while the remaining third valve ports 53 and fourth valve ports 54 are located in the second connecting cavity 5512. In this way, the outdoor heat exchanger 20, which is connected to the third valve port 53 located in the first connecting cavity 5511, is connected to the first valve port 51, while the remaining outdoor heat exchangers 20, the first indoor heat exchange unit 3, and the second indoor heat exchange unit 4 are all connected to the second valve port 52.

[0143] For example, such as Figure 4 and Figure 10 As shown, the air conditioning system 100 has a dehumidification and reheat mode. In the dehumidification and reheat mode, the valve core 56 rotates until the fourth valve port 54 corresponding to the first indoor heat exchange unit 3 is isolated in the first connecting cavity 5511. The fourth valve port 54 corresponding to the second indoor heat exchange unit 4 and multiple third valve ports 53 are all located in the second connecting cavity 5512. In this way, the first indoor heat exchange unit 3 is connected to the first valve port 51, and the outdoor heat exchange unit 2 and the second indoor heat exchange unit 4 are both connected to the second valve port 52.

[0144] Also exemplarily, such as Figure 5 and Figure 11 As shown, the air conditioning system 100 has a heating mode. In the heating mode, the valve core 56 rotates to isolate all the third valve ports 53 within the first connecting cavity 5511, and all the fourth valve ports 54 are located within the second connecting cavity 5512. In this way, the outdoor heat exchange unit 2 is connected to the first valve port 51, and the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 are both connected to the second valve port 52.

[0145] For example, such as Figure 6 and Figure 12 As shown, the air conditioning system 100 has a cooling mode. In the cooling mode, the valve core 56 rotates to isolate all the fourth valve ports 54 within the first connecting cavity 5511, and the third valve ports 53 are all located within the second connecting cavity 5512. In this way, the outdoor heat exchange unit 2 is connected to the second valve port 52, and the first indoor heat exchange unit 3 and the second indoor heat exchange unit 4 are both connected to the first valve port 51.

[0146] In some embodiments of this utility model, such as Figure 7 As shown, the valve core 56 defines a connecting groove 561 with its opening facing the first valve port 51 or the second valve port 52, and the corresponding cavity wall of the valve body 55 closes the opening of the connecting groove 561.

[0147] The valve core 56 defines a connecting groove 561, and the valve body 55 can close the opening of the connecting groove 561. In this way, the valve ports that are enclosed in the connecting groove 561 are isolated from the external valve ports, thereby selectively connecting the first valve port 51 with the third valve port 53 or the fourth valve port 54, or selectively connecting the second valve port 52 with the third valve port 53 or the fourth valve port 54.

[0148] In some embodiments of this utility model, such as Figure 7 As shown, the second valve port 52 is formed on the peripheral wall of the valve body 55 and is arranged to avoid the valve core 56 along the axial direction. The first valve port 51 and a plurality of heat exchange valve ports 5a are all formed at one axial end of the valve body 55. The plurality of heat exchange valve ports 5a are arranged around the outer peripheral side of the first valve port 51. The groove of the connecting groove 561 is arranged facing the side where the first valve port 51 is located and is suitable for connecting at least one heat exchange valve port 5a.

[0149] The connecting groove 561 of the valve core 56 is always connected to the first valve port 51, and the second valve port 52 is axially spaced from the valve core 56, with the connecting groove 561 of the valve core 56 and the second valve port 52 always isolated from each other.

[0150] The heat exchange valve port 5a is arranged around the outer periphery of the first valve port 51 and is located on the same axial side of the valve body 55 as the first valve port 51. The groove of the connecting groove 561 is arranged facing the side where the first valve port 51 is located. The connecting groove 561 can optionally cover the heat exchange valve port 5a inside the connecting groove 561. In this way, the heat exchange valve port 5a located inside the connecting groove 561 is connected to the first valve port 51, and the heat exchange valve port 5a located outside the connecting groove 561 is connected to the second valve port 52.

[0151] In some embodiments of this utility model, such as Figure 11 and Figure 12 As shown, the valve body 55 has a first region 552 and a second region 553 arranged sequentially and connected in the circumferential direction, a plurality of third valve ports 53 are provided in the first region 552, and a plurality of fourth valve ports 54 are provided in the second region 553.

[0152] Multiple third valve ports 53 are arranged in a concentrated manner, and multiple fourth valve ports 54 are arranged in a concentrated manner, so that the connecting groove 561 of the valve core 56 can cover the multiple third valve ports 53 together, and so that the connecting groove 561 of the valve core 56 can cover the multiple fourth valve ports 54 together.

[0153] In some embodiments of this utility model, such as Figure 7 As shown, the directional control valve 5 also includes a motor 57 and a drive shaft 58. The motor 57 drives the drive shaft 58 to rotate. The drive shaft 58 is arranged along the central axis of the valve body 55 and connected to the valve core 56, thereby driving the valve core 56 to rotate around the central axis of the valve body 55. The directional control valve 5 drives the valve core 56 to rotate via the motor 57. The movement of the valve core 56 is stable and accurate, making it easy to control.

[0154] In some embodiments of this utility model, such as Figure 7 As shown, the valve body 55 is cylindrical, and the valve core 56 is a fan-shaped structure concentrically arranged with the valve body 55. The valve core 56 is rotatably located on the central axis of the valve body 55 within the valve cavity 551. The bottom end of the valve core 56 is open downwards to form a connecting groove 561. The valve core 56 and the bottom wall of the valve body 55 are sealed together, thereby separating the interior of the connecting groove 561 from the interior of the valve body 55. The valve core 56 is disposed within the valve body 55, thereby dividing the internal space of the valve body 55 into a first connecting cavity 5511 located within the connecting groove 561 and a second connecting cavity 5512 located outside the connecting groove 561.

[0155] A first connecting pipe 591 is provided at the bottom end of the valve body 55. The first connecting pipe 591 is located at the center of the valve body 55 and is always connected to the first communicating cavity 5511. The first connecting pipe 591 forms the first valve port 51.

[0156] The valve core 56 is lower than the valve body 55. A second connecting pipe 592 is provided on the peripheral wall of the valve body 55 above the valve core 56. The second connecting pipe 592 is connected to the second communicating cavity 5512, and the second valve port 52 is constructed at the second connecting pipe 592.

[0157] A third connecting pipe 593, a fourth connecting pipe 594, a fifth connecting pipe 595, and a sixth connecting pipe 596 are provided at the bottom of the valve body 55. The third connecting pipe 593, the fourth connecting pipe 594, the fifth connecting pipe 595, and the sixth connecting pipe 596 are all connected to the internal space of the valve body 55. The third connecting pipe 593 and the fourth connecting pipe 594 form the third valve port 53, and the fifth connecting pipe 595 and the sixth connecting pipe 596 form the fourth valve port 54.

[0158] The valve core 56 rotatably encloses one or more of the third valve port 53 and the fourth valve port 54 within the communicating cavity. The heat exchange valve port 5a located in the communicating groove 561 is connected to the first valve port 51, and the heat exchange valve port 5a located outside the communicating groove 561 is connected to the second valve port 52.

[0159] An air conditioner according to a second aspect of the present invention includes an air conditioning system 100 according to a first aspect of the present invention.

[0160] According to the present invention, by setting the air conditioning system 100 of the first aspect, the air conditioner can operate in multiple operating states, thereby improving the functionality of the air conditioner.

[0161] Other components of the air conditioning system according to embodiments of the present invention, such as evaporators, condensers, and throttling elements, as well as their operation, are known to those skilled in the art and will not be described in detail here.

[0162] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "top," "bottom," "inner," "outer," "axial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and 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 as "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.

[0163] 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.

[0164] 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.

[0165] 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. An air conditioning system, characterized in that, include: A compressor, having an air inlet and an air outlet; The outdoor heat exchange unit includes multiple outdoor heat exchangers; The first indoor heat exchange unit includes at least one first indoor heat exchanger; The second indoor heat exchange unit includes at least one second indoor heat exchanger; A reversing valve has a first valve port, a second valve port, and multiple heat exchange valve ports, the multiple heat exchange valve ports including multiple third valve ports and multiple fourth valve ports. The first valve port is connected to the air inlet, the second valve port is connected to the air outlet, the multiple third valve ports are respectively connected to the first end of multiple outdoor heat exchangers, one of the fourth valve ports is connected to the first end of the first indoor heat exchange unit, one of the remaining fourth valve ports is connected to the first end of the second indoor heat exchange unit, and the second end of the multiple outdoor heat exchangers is connected to the second end of the first indoor heat exchange unit and the second end of the second indoor heat exchange unit. The reversing valve can be operated to switch between different third valve ports and the second valve port, and to switch between different third valve ports and the first valve port, and can also be operated to switch between different fourth valve ports and the second valve port, and to switch between different fourth valve ports and the first valve port.

2. The air conditioning system according to claim 1, characterized in that, The air conditioning system has a heating and defrosting mode. In the heating and defrosting mode, at least one outdoor heat exchanger is connected to the second valve port through the corresponding third valve port, and at least one outdoor heat exchanger is connected to the first valve port through the corresponding third valve port. The first indoor heat exchange unit and the second indoor heat exchange unit are respectively connected to the second valve port through the corresponding fourth valve port.

3. The air conditioning system according to claim 2, characterized in that, The air conditioning system has multiple heating and defrosting modes, and in different heating and defrosting modes, different outdoor heat exchangers are connected to the second valve port.

4. The air conditioning system according to claim 1, characterized in that, The air conditioning system has a dehumidification and reheat mode. In the dehumidification and reheat mode, the second indoor heat exchange unit is connected to the second valve port through the corresponding fourth valve port, the first indoor heat exchange unit is connected to the first valve port through the corresponding fourth valve port, and the outdoor heat exchange unit is connected to the second valve port through the reversing valve.

5. The air conditioning system according to claim 4, characterized in that, A first throttling element is provided between the second end of the outdoor heat exchange unit and the second end of the first indoor heat exchange unit, and a second throttling element is provided between the second end of the outdoor heat exchange unit and the second end of the second indoor heat exchange unit. The second end of the first indoor heat exchange unit is connected to the second end of the second indoor heat exchange unit through the first throttling element and through the second throttling element.

6. The air conditioning system according to claim 5, characterized in that, There are multiple first indoor heat exchangers and multiple second indoor heat exchangers. Each first indoor heat exchanger corresponds to one first throttling element, and each second indoor heat exchanger corresponds to one second throttling element.

7. The air conditioning system according to claim 5, characterized in that, The number of the first indoor heat exchangers is greater than or equal to the number of the second indoor heat exchangers.

8. The air conditioning system according to claim 1, characterized in that, The air conditioning system also includes an indoor unit, which includes a casing and at least one first indoor heat exchanger and at least one second indoor heat exchanger disposed within the casing. The first indoor heat exchanger and the second indoor heat exchanger are arranged along the height direction or in a front-to-back arrangement along the airflow direction.

9. The air conditioning system according to claim 1, characterized in that, The air conditioning system also includes an outdoor unit, which includes a housing and a plurality of outdoor heat exchangers disposed within the housing. The plurality of outdoor heat exchangers are arranged along the height direction or along the airflow direction.

10. The air conditioning system according to claim 9, characterized in that, The air conditioning system also includes multiple outdoor throttling elements, which are disposed inside the housing and connected between the second end of the outdoor heat exchanger and the second end of the first indoor heat exchange unit. Each outdoor heat exchanger has one outdoor throttling element connected in series at its second end, and the second ends of each outdoor heat exchanger are connected to each other through the corresponding outdoor throttling element.

11. The air conditioning system according to claim 1, characterized in that, A first throttling element is provided between the second end of the outdoor heat exchange unit and the second end of the first indoor heat exchange unit, and a second throttling element is provided between the second end of the outdoor heat exchange unit and the second end of the second indoor heat exchange unit. The second end of the first indoor heat exchange unit is connected to the second end of the second indoor heat exchange unit through the first throttling element and through the second throttling element. The air conditioning system also includes an economizer, which has a first heat exchange channel and a second heat exchange channel that exchange heat with each other. The first end of the first heat exchange channel is connected to each of the first throttling elements and each of the second throttling elements. The second end of the first heat exchange channel is connected to the outdoor heat exchange unit. The inlet of the second heat exchange channel is connected between the outdoor heat exchange unit and the second end of the first heat exchange channel through a third throttling element. The outlet of the second heat exchange channel is connected to the air inlet or the air supply port of the compressor.

12. The air conditioning system according to claim 11, characterized in that, Also includes: A one-way throttle valve is connected between the outdoor heat exchange unit and the economizer, and is used to throttle the refrigerant flowing from the economizer to the outdoor heat exchange unit.

13. The air conditioning system according to claim 1, characterized in that, The air conditioning system has a heating mode; the first indoor heat exchange unit and the second indoor heat exchange unit are respectively connected to the second valve port via the corresponding fourth valve port; the outdoor heat exchange unit is connected to the first valve port via the reversing valve; and / or The air conditioning system has a cooling mode. The outdoor heat exchange unit is connected to the second valve port through the reversing valve. The first indoor heat exchange unit and the second indoor heat exchange unit are respectively connected to the first valve port through the corresponding fourth valve port.

14. The air conditioning system according to any one of claims 1-13, characterized in that, The reversing valve is configured such that it has multiple switching states to enable the air conditioning system to have multiple operating modes. In any of the switching states, at least one of the heat exchange valve ports is connected to the second valve port, and the remaining heat exchange valve ports are connected to the first valve port.

15. The air conditioning system according to claim 14, characterized in that, The reversing valve includes: The valve body has a valve cavity, and the first valve port, the second valve port, and a plurality of heat exchange valve ports are all formed on the valve body; A valve core is rotatably disposed in the valve cavity about the central axis of the valve body, and divides the valve cavity into a first connecting cavity and a second connecting cavity. The first connecting cavity is connected to the first valve port, and the second connecting cavity is connected to the second valve port.

16. The air conditioning system according to claim 15, characterized in that, The valve core defines a connecting groove with its outlet facing the first valve port or the second valve port, and the corresponding cavity wall of the valve body closes the opening of the connecting groove.

17. The air conditioning system according to claim 16, characterized in that, The second valve port is formed on the peripheral wall of the valve body and is arranged to avoid the valve core along the axial direction. The first valve port and a plurality of heat exchange valve ports are all formed at one axial end of the valve body. The plurality of heat exchange valve ports are arranged around the outer peripheral side of the first valve port. The groove of the connecting groove is arranged facing the side where the first valve port is located and is adapted to connect at least one of the heat exchange valve ports.

18. The air conditioning system according to claim 16, characterized in that, The valve body has a first region and a second region arranged sequentially and connected in the circumferential direction, a plurality of third valve ports are provided in the first region, and a plurality of fourth valve ports are provided in the second region.

19. An air conditioner, characterized in that, Including the air conditioning system according to any one of claims 1-18.

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