Air conditioner system and air conditioner

Abstract

The utility model provides an air conditioner system and an air conditioner. The air conditioner system comprises a four-way valve, a condenser, a throttling device, a first evaporator and a second evaporator. An outlet of the first evaporator communicates with a first pipeline and a second pipeline. An outlet of the second evaporator communicates with a third pipeline and a fourth pipeline. And the third communication port is communicated with a fifth pipeline. And the fifth pipeline is also communicated with the first pipeline and the third pipeline. And the first pipeline and the third pipeline are also communicated with a sixth pipeline. The first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline and the sixth pipeline are each provided with a first control valve at least used for controlling connection and disconnection. The four communication ports of the four-way valve can be fully utilized, the four-way valve does not need to be reversely installed to avoid liquid seal, and refrigerants are prevented from leaking to the low-pressure side from the high-pressure side. When the first evaporator and the second evaporator both refrigerate, the refrigerating capacity and energy efficiency of the air conditioner system can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to an air conditioner system and an air conditioner. Background Art

[0002] An air conditioner, also known as an air conditioner, is a device that manually regulates and controls parameters such as temperature, humidity, and flow rate within a building or structure. Current technical solutions for simultaneous cooling and heating multi-split systems utilize multiple indoor units. During transitional seasons or special occasions, different indoor units can simultaneously meet different cooling and heating requirements, creating simultaneous cooling and heating. Currently, there are two-pipe and three-pipe solutions. The two-pipe system requires an efficient and reliable gas-liquid separator in the switching mechanism to separate high-pressure gas and liquid to meet the requirements of simultaneous indoor cooling and heating. Therefore, it has been less widely adopted by manufacturers. Three-pipe systems utilize independent high-pressure gas, low-pressure gas, and liquid pipes, combined with valves, to achieve reliable and efficient simultaneous cooling and heating. Furthermore, three-pipe systems typically use two four-way valves to separate the high-pressure, low-pressure, and liquid pipes. However, two four-way valves can make the system piping cumbersome, and with increasingly smaller housings, dual four-way valves complicate piping design. Utility Model Content

[0003] In view of the above problems, the present invention is proposed to provide an air conditioner system and air conditioner that overcome the above problems or at least partially solve the above problems, and can solve the problem that the existing three-pipeline model uses two four-way valves, making the system pipelines bloated.

[0004] Specifically, the utility model provides an air conditioner system, which includes a four-way valve, a condenser, a throttling device, a first evaporator and a second evaporator;

[0005] The four-way valve has a first communication port, a second communication port, a third communication port and a fourth communication port;

[0006] The second communication port is connected to the inlet of the condenser;

[0007] The outlet of the condenser is connected to the throttling device, and the outlet of the throttling device is connected to the inlet of the first evaporator and the second evaporator;

[0008] The outlet of the first evaporator is connected with a first pipeline and a second pipeline;

[0009] The outlet of the second evaporator is connected to a third pipeline and a fourth pipeline;

[0010] The third communication port is connected to a fifth pipeline; the fifth pipeline is also connected to the first pipeline and the third pipeline; the first pipeline and the third pipeline are also connected to a sixth pipeline;

[0011] One end of the sixth pipeline away from the first evaporator and the second evaporator is used for high-pressure gaseous refrigerant, high-pressure liquid refrigerant, medium-temperature liquid refrigerant, or medium-pressure liquid refrigerant to flow into the sixth pipeline; the first connecting port is used for high-pressure gaseous refrigerant, high-pressure liquid refrigerant, medium-temperature liquid refrigerant, or medium-pressure liquid refrigerant to flow into the four-way valve;

[0012] The end of the second pipeline away from the first evaporator is used for low-temperature and low-pressure gaseous refrigerant to flow out of the second pipeline; the end of the fourth pipeline away from the second evaporator is used for low-temperature and low-pressure gaseous refrigerant to flow out of the fourth pipeline; the fourth communication port is used for low-temperature and low-pressure gaseous refrigerant to flow out of the four-way valve;

[0013] The first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline and the sixth pipeline are all provided with a first control valve at least for controlling on and off.

[0014] Optionally, the air conditioner system further comprises a compressor;

[0015] The first communication port is connected to the air outlet of the compressor;

[0016] One end of the sixth pipeline away from the first evaporator and the second evaporator is connected to the air outlet of the compressor;

[0017] The fourth communication port is connected to the inlet of the compressor; the second pipeline and the fourth pipeline are connected to the inlet of the compressor.

[0018] Optionally, the first control valve is an electronic expansion valve or a solenoid valve.

[0019] Optionally, a second control valve for controlling on and off is provided on the pipeline between the outlet of the condenser and the throttling device.

[0020] Optionally, the first pipeline and the third pipeline are connected to the fifth pipeline and the sixth pipeline via a confluence pipeline.

[0021] Optionally, the number of the first evaporator and the number of the second evaporator can be multiple.

[0022] Optionally, the throttling device includes a first throttling portion and a second throttling portion;

[0023] The inlet of the first throttling portion is connected to the condenser, and the outlet of the first throttling portion is connected to the first evaporator;

[0024] The inlet of the second throttling portion is connected to the condenser, and the outlet of the second throttling portion is connected to the second evaporator.

[0025] Optionally, the air conditioner system further includes a control valve box, wherein the control valve box includes the first control valve arranged on the fifth pipeline and the first control valve arranged on the sixth pipeline.

[0026] The utility model also provides an air conditioner, which includes any one of the above-mentioned air conditioner systems.

[0027] Optionally, the air conditioner includes a first indoor unit, a second indoor unit and an outdoor unit;

[0028] The outdoor unit includes the four-way valve, the condenser, the fifth pipeline, the sixth pipeline, the first control valve provided on the fifth pipeline, and the first control valve provided on the sixth pipeline;

[0029] The first indoor unit includes a first throttling portion of the throttling device, the first evaporator, the first pipeline, the second pipeline, the first control valve provided on the first pipeline, and the first control valve provided on the second pipeline;

[0030] The second indoor unit includes the second throttling portion of the throttling device, the second evaporator, the third pipeline, the fourth pipeline, the first control valve provided on the third pipeline, and the first control valve provided on the fourth pipeline.

[0031] In the air conditioning system and air conditioner of the present invention, due to the presence of the fifth pipeline, the sixth pipeline, the fifth valve, and the sixth valve, only one four-way valve is required, thereby reducing the number of four-way valves and enabling all four connecting ports of the four-way valve to be fully utilized without short-circuiting the third connecting port. This eliminates the need to install the four-way valve upside down to prevent a liquid seal, and eliminates the need to connect the third connecting port to the compressor inlet via a capillary tube to prevent refrigerant from leaking from the high-pressure side to the low-pressure side. Furthermore, when both the first and second evaporators are cooling, the refrigerant flowing out of the evaporators is split into two paths and returned to the compressor, utilizing both the high- and low-pressure air pipes. This reduces the air pipe pressure drop, and the reduction in this pressure drop improves the cooling capacity and energy efficiency of the air conditioning system.

[0032] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0034] Figure 1 is a schematic structural diagram of an air conditioner system according to an embodiment of the present utility model;

[0035] Figure 2 is a schematic working state diagram of an air conditioner system according to an embodiment of the present utility model;

[0036] Figure 3 is a schematic working state diagram of an air conditioner system according to an embodiment of the present utility model;

[0037] Figure 4 is a schematic working state diagram of an air conditioner system according to an embodiment of the present utility model;

[0038] Figure 5 1 is a schematic working state diagram of an air conditioner system according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0039] Refer to the following Figures 1 to 5 To describe the air-conditioning system and the air-conditioner of the embodiment of the present invention. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0040] Unless otherwise expressly specified or limited, terms such as "disposed," "installed," "connected," "connected," "fixed," and "coupled" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two elements or interaction between two elements, unless otherwise expressly limited. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0041] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact via another feature between them. That is, in the description of this embodiment, the first feature being "above," "above," and "above" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below," "below," or "below" the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of the present embodiment, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples.

[0043] Figure 1 is a schematic structural diagram of an air conditioner system according to an embodiment of the present utility model, as shown in FIG. Figure 1 As shown, and reference Figures 2 to 5 An embodiment of the present invention provides an air conditioning system, which includes a four-way valve 20, a condenser 30, a throttling device, a first evaporator 51, and a second evaporator 52. The four-way valve 20 has a first connecting port, a second connecting port, a third connecting port, and a fourth connecting port. The second connecting port is connected to the inlet of the condenser 30. The outlet of the condenser 30 is connected to the throttling device, and the outlet of the throttling device is connected to the inlet of the first evaporator 51 and the second evaporator 52. The outlet of the first evaporator 51 is connected to a first pipeline 61 and a second pipeline 62. The outlet of the second evaporator 52 is connected to a third pipeline 63 and a fourth pipeline 64. The third connecting port is connected to a fifth pipeline 65. The fifth pipeline 65 is also connected to the first pipeline 61 and the third pipeline 63. The first pipeline 61 and the third pipeline 63 are also connected to a sixth pipeline 66. The first pipeline 61 , the second pipeline 62 , the third pipeline 63 , the fourth pipeline 64 , the fifth pipeline 65 and the sixth pipeline 66 are each provided with a first control valve for at least controlling on and off.

[0044] The end of the sixth pipe 66 away from the first evaporator 51 and the second evaporator 52 is used for high-pressure gaseous refrigerant, high-pressure liquid refrigerant, medium-temperature liquid refrigerant, medium-pressure liquid refrigerant, high-temperature liquid refrigerant, or high-temperature gaseous refrigerant to flow into the sixth pipe 66. The first connecting port is used for high-pressure gaseous refrigerant, high-pressure liquid refrigerant, medium-temperature liquid refrigerant, medium-pressure liquid refrigerant, high-temperature liquid refrigerant, or high-temperature gaseous refrigerant to flow into the four-way valve 20. In other words, the end of the sixth pipe 66 away from the first evaporator 51 and the second evaporator 52 and the first connecting port are used for the refrigerant to be condensed to flow in.

[0045] The end of the second pipe 62 away from the first evaporator 51 allows low-temperature, low-pressure gaseous refrigerant to flow out of the second pipe 62. The end of the fourth pipe 64 away from the second evaporator 52 allows low-temperature, low-pressure gaseous refrigerant to flow out of the fourth pipe 64. The fourth connecting port allows low-temperature, low-pressure gaseous refrigerant to flow out of the four-way valve 20. In other words, the end of the second pipe 62 away from the first evaporator 51, the end of the fourth pipe 64 away from the second evaporator 52, and the fourth connecting port allow the refrigerant to flow out after evaporation and absorption of heat.

[0046] In the embodiment of the present utility model, the first control valve of the first pipeline 61 is the first valve 71, the first control valve of the second pipeline 62 is the second valve 72, the first control valve of the third pipeline 63 is the third valve 73, the first control valve of the fourth pipeline 64 is the fourth valve 74, the first control valve of the fifth pipeline 65 is the fifth valve 75, and the first control valve of the sixth pipeline 66 is the sixth valve 76.

[0047] In the embodiment of the present utility model, when both the first evaporator 51 and the second evaporator 52 need to be heated, the first and third connecting ports of the four-way valve 20 are connected, the second and fourth connecting ports are connected, the fifth and sixth valves 75 and 76 are both open, and the first and third valves 71 and 73 are both open. The high-pressure gaseous refrigerant, the high-pressure liquid refrigerant, the medium-temperature liquid refrigerant, the medium-pressure liquid refrigerant, the high-temperature liquid refrigerant, or the high-temperature gaseous refrigerant enters the first and second evaporators 51 and 52 through the sixth and fifth pipelines 66 and 65 to heat the room, then enters the condenser 30 after being throttled by the throttling device and flows out of the fourth connecting port, completing the heating cycle of the first and second evaporators 51 and 52. In the embodiment of the present invention, only one four-way valve 20 is required, reducing the number of four-way valves 20 and making full use of all four communication ports of the four-way valve 20, eliminating the need to short-circuit the third communication port. This eliminates the need to install the four-way valve 20 upside down to prevent a liquid seal, and eliminates the need to connect the third communication port to the compressor inlet via a capillary tube to prevent refrigerant from leaking from the high-pressure side to the low-pressure side. By combining the third communication port of the four-way valve 20, the fifth valve 75, and the sixth valve 76, the embodiment of the present invention eliminates the need to short-circuit the third communication port of the four-way valve 20 or connect the refrigerant to the low-pressure side via a capillary tube.

[0048] In the embodiment of the present invention, when both the first evaporator 51 and the second evaporator 52 require cooling, the first and second connecting ports of the four-way valve 20 are connected, the third and fourth connecting ports are connected, the fifth valve 75 is opened, the sixth valve 76 is closed, and the first, second, third, and fourth valves 71, 72, 73, and 74 are all open. High-pressure gaseous refrigerant, high-pressure liquid refrigerant, medium-temperature liquid refrigerant, medium-pressure liquid refrigerant, high-temperature liquid refrigerant, or high-temperature gaseous refrigerant enters the condenser 30 through the first and second connecting ports, is throttled by the throttling device, enters the first and second evaporators 51 and 52 to cool the room, and then flows out through the first, second, third, fourth, and fifth pipes 61, 62, 63, 64, and 65 and the fourth connecting port, completing the refrigeration cycle of the first and second evaporators 51 and 52. In the embodiment of the present invention, the refrigerant flowing out of the evaporator is divided into two paths and returns to the compressor, and both the high-pressure and low-pressure air pipes are utilized, which can reduce the air pipe pressure drop. In the refrigeration system itself, the pressure drop on the evaporation side has a greater impact on the system than the condensation side, and the air pipe is the connecting part after the heat exchange. The reduction of the pressure drop in this part can improve the cooling capacity and energy efficiency of the air-conditioning system.

[0049] In some embodiments of the present invention, the air conditioning system further includes a compressor 10. The first communication port is connected to the air outlet of the compressor 10. The end of the sixth pipe 66, which is remote from the first evaporator 51 and the second evaporator 52, is connected to the air outlet of the compressor 10. The fourth communication port is connected to the inlet of the compressor 10. The second pipe 62 and the fourth pipe 64 are connected to the inlet of the compressor 10.

[0050] In some alternative embodiments of the present invention, the air conditioning system may further include another condenser 30, the outlet of the other condenser 30 being connected to an end of the sixth pipe 66 away from the first evaporator 51 and the second evaporator 52, and / or the outlet of the other condenser 30 being connected to the first connecting port.

[0051] In some alternative embodiments of the present invention, the air conditioning system may also include a compressor 10 and another condenser 30, the outlet of the other condenser 30 is connected to the end of the sixth pipe 66 away from the first evaporator 51 and the second evaporator 52, and the air outlet of the compressor 10 is connected to the first connecting port.

[0052] In some alternative embodiments of the present invention, the air conditioning system may also include a compressor 10 and another condenser 30, the outlet of the other condenser 30 is connected to the first connecting port, and the air outlet of the compressor 10 is connected to the end of the sixth pipeline 66 away from the first evaporator 51 and the second evaporator 52.

[0053] In some embodiments of the present invention, the first pipeline 61 and the third pipeline 63 are connected to the fifth pipeline 65 and the sixth pipeline 66 via a converging pipeline. This converging pipeline can be referred to as the high-pressure pipeline 82. The pipeline between the condenser 30 and the throttling device can also be referred to as the high-pressure pipeline 81. The fourth connecting port is connected to the gas-liquid separator 11 of the compressor 10, and the second pipeline 62 and the fourth pipeline 64 are connected to the gas-liquid separator 11 of the compressor 10 via the converging pipeline. This converging pipeline can be referred to as the low-pressure pipeline 83. This arrangement provides three connecting pipelines between the outdoor unit and the indoor unit, facilitating connection between the indoor and outdoor units.

[0054] In some embodiments of the present invention, the first control valve is an electronic expansion valve. When the first control valve is an electronic expansion valve, the electronic expansion valve can be adjusted to adjust the flow rate in the fifth pipeline 65 in real time to achieve a higher cooling or heating effect. In some alternative embodiments of the present invention, the first control valve is an on-off solenoid valve.

[0055] In some embodiments of the present invention, a second control valve 31 for controlling on-off is provided on the pipeline between the outlet of the condenser 30 and the throttling device.

[0056] In some embodiments of the present invention, the throttling device includes a first throttling portion 41 and a second throttling portion 42. The inlet of the first throttling portion 41 is connected to the condenser 30, and the outlet of the first throttling portion 41 is connected to the first evaporator 51. The inlet of the second throttling portion 42 is connected to the condenser 30, and the outlet of the second throttling portion 42 is connected to the second evaporator 52. By providing a corresponding throttling portion for each evaporator, there is no need for a unified throttling. This allows the first evaporator 51 to be used for heating while the second evaporator 52 is used for cooling, and vice versa. The throttling portion can be an electronic expansion valve.

[0057] In some embodiments of the present invention, there may be multiple first evaporators 51 and multiple second evaporators 52. This configuration allows the air conditioning system to be a multi-connected air conditioning system with more evaporators.

[0058] In some embodiments of the present invention, the air conditioning system further includes a control valve box, which includes a first control valve disposed on the fifth pipeline 65 and a first control valve disposed on the sixth pipeline 66. The provision of the control valve box facilitates centralized valve installation and control, making the air conditioning system and the air conditioner more compact and more convenient to control.

[0059] The air conditioner system of the embodiment of the present invention can have multiple operating modes, namely, heating-only mode, main heating mode, cooling-only mode, and main cooling mode.

[0060] like Figure 2 As shown, in heating-only mode, i.e., when both the first evaporator 51 and the second evaporator 52 are required to heat, the first and third ports, and the second and fourth ports of the four-way valve 20 are connected. The fifth and sixth valves 75 and 76 are both open, and the first and third valves 71 and 73 are both open. The second and fourth valves 72 and 74 are both closed. The refrigerant flowing out of the compressor 10 is split into two paths: one path flows through the sixth pipe 66, and the other path flows through the first and fifth ports, then enters the first and second evaporators 51 and 52 to heat the room. The refrigerant is then throttled by the first and second throttle sections 41 and 42, respectively, before entering the condenser 30. The refrigerant then flows out of the second and fourth ports of the four-way valve 20 to the gas-liquid separator 11, and then returns to the intake port of the compressor 10, completing the heating cycle for the first and second evaporators 51 and 52.

[0061] like Figure 3As shown, in the main heating mode, the condenser 30 needs to absorb heat through evaporation, with some evaporators performing heating and others performing cooling. For example, the first evaporator 51 is performing heating and the second evaporator 52 is performing cooling. The first and third communication ports of the four-way valve 20 are connected, the second and fourth communication ports are connected, the fifth and sixth valves 75 and 76 are both open, the first and fourth valves 71 and 74 are both open, and the second and third valves 72 and 73 are both closed. The refrigerant flowing out of the compressor 10 is divided into two paths, one path passes through the sixth pipe 66, and the other path passes through the first connecting port and the fifth pipe 65 and then enters the first evaporator 51 for indoor heating, and then is throttled by the first throttling part 41 and is divided into two paths, one path passes through the condenser 30, and flows out to the gas-liquid separator 11 from the second connecting port and the fourth connecting port of the four-way valve 20, and the other path passes through the second throttling part 42 and is throttled again, and then enters the second evaporator 52 for indoor cooling, and then passes through the fourth pipe 64 to return to the gas-liquid separator 11, and then returns to the intake port of the compressor 10, completing the heating cycle of the first evaporator 51 and the refrigeration cycle of the second evaporator 52.

[0062] like Figure 4 As shown, in cooling-only mode, i.e., both the first evaporator 51 and the second evaporator 52 require cooling, the first and second communication ports of the four-way valve 20 are connected, the third and fourth communication ports are connected, the fifth valve 75 is open, the sixth valve 76 is closed, and the first, second, third, and fourth valves 71, 72, 73, and 74 are all open. The refrigerant flowing out of the compressor 10 enters the condenser 30 through the first and second communication ports, then enters the first and second throttle sections 41, 42, respectively. After being throttled, it enters the first and second evaporators 51, 52 to cool the room. It then flows through the first, second, third, and fourth pipelines 61, 62, 63, and 64 to the gas-liquid separator 11, and then returns to the suction port of the compressor 10, completing the refrigeration cycle for the first and second evaporators 51, 52.

[0063] like Figure 5As shown, in the main cooling mode, the condenser 30 needs to condense and release heat, and some evaporators are used for heating and some for cooling. For example, the first evaporator 51 is used for cooling and the second evaporator 52 is used for heating. The first and second communication ports of the four-way valve 20 are connected, the third and fourth communication ports are connected, the fifth valve 75 is closed, the sixth valve 76 is open, the first valve 71 is closed, the second valve 72 is open, the third valve 73 is open, and the fourth valve 74 is closed. The refrigerant flowing out of the compressor 10 is divided into two paths. One path enters the condenser 30 through the first connecting port and the second connecting port, and then enters the first throttling part 41. The other path enters the second evaporator 52 after passing through the sixth pipe 66 for indoor heating, and then enters the first throttling part 41 after throttling through the second throttling part 42. After throttling through the first throttling part 41, it enters the first evaporator 51 for indoor cooling, and then returns to the gas-liquid separator 11 through the second pipe 62, and then returns to the intake port of the compressor 10, completing the cooling cycle of the first evaporator 51 and the heating cycle of the second evaporator 52.

[0064] The present invention also provides an air conditioner, comprising the air conditioner system of any of the above embodiments. For example, the air conditioner comprises a first indoor unit, a second indoor unit, and an outdoor unit. The outdoor unit comprises a four-way valve 20, a condenser 30, a fifth pipeline 65, a sixth pipeline 66, a first control valve disposed on the fifth pipeline 65, and a first control valve disposed on the sixth pipeline 66. The first indoor unit comprises a first throttling portion 41 of a throttling device, a first evaporator 51, a first pipeline 61, a second pipeline 62, a first control valve disposed on the first pipeline 61, and a first control valve disposed on the second pipeline 62. The second indoor unit comprises a second throttling portion 42 of a throttling device, a second evaporator 52, a third pipeline 63, a fourth pipeline 64, a first control valve disposed on the third pipeline 63, and a first control valve disposed on the fourth pipeline 64.

[0065] Furthermore, the outdoor unit and the first and second indoor units can be connected via two high-pressure pipelines and one low-pressure pipeline. The first and third pipelines 61 and 63 are connected via a high-pressure pipeline to the fifth and sixth pipelines 65 and 66. The condenser 30 is connected to the throttling device via another high-pressure pipeline. The second and fourth pipelines 62 and 64 are connected to the gas-liquid separator 11 of the compressor 10 via a low-pressure pipeline.

[0066] In the air conditioner of the present embodiment, due to the presence of the fifth pipeline 65, the sixth pipeline 66, the fifth valve 75, and the sixth valve 76, all four connecting ports of the four-way valve 20 can be fully utilized, eliminating the need to short-circuit the third connecting port. This eliminates the need to install the four-way valve 20 upside down to prevent a liquid seal, and eliminates the need to connect the third connecting port to the inlet of the compressor 10 via a capillary tube to prevent refrigerant leakage from the high-pressure side to the low-pressure side. Furthermore, when both the first evaporator 51 and the second evaporator 52 are cooling, the refrigerant flowing out of the evaporators is split into two paths and returned to the compressor 10. This utilization of both the high- and low-pressure air pipes reduces the pressure drop in the air pipes, and this reduction in pressure drop improves the cooling capacity and energy efficiency of the air conditioner system. Furthermore, by optimizing the system design, the number of four-way valves 20 can be reduced, requiring only a single four-way valve 20 to achieve simultaneous cooling and heating functions. Only the installation position of one four-way valve 20 needs to be considered, eliminating the need to install multiple four-way valves 20 simultaneously, making installation of the four-way valve 20 easier.

[0067] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention can be directly determined or deduced from the contents disclosed herein without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. An air conditioner system, characterized in that: It includes a four-way valve, a condenser, a throttling device, a first evaporator and a second evaporator; The four-way valve has a first communication port, a second communication port, a third communication port and a fourth communication port; The second communication port is connected to the inlet of the condenser; The outlet of the condenser is connected to the throttling device, and the outlet of the throttling device is connected to the inlet of the first evaporator and the second evaporator; The outlet of the first evaporator is connected with a first pipeline and a second pipeline; The outlet of the second evaporator is connected to a third pipeline and a fourth pipeline; The third communication port is connected to a fifth pipeline; the fifth pipeline is also connected to the first pipeline and the third pipeline; the first pipeline and the third pipeline are also connected to a sixth pipeline; The first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline and the sixth pipeline are all provided with a first control valve at least for controlling on and off.

2. The air conditioner system according to claim 1, wherein: Also includes a compressor; The first communication port is connected to the air outlet of the compressor; One end of the sixth pipeline away from the first evaporator and the second evaporator is connected to the air outlet of the compressor; The fourth communication port is connected to the inlet of the compressor; the second pipeline and the fourth pipeline are connected to the inlet of the compressor.

3. The air conditioner system according to claim 1 or 2, characterized in that: The first control valve is an electronic expansion valve or a solenoid valve.

4. The air conditioner system according to claim 1, wherein: A second control valve for controlling on and off is provided on the pipeline between the outlet of the condenser and the throttling device.

5. The air conditioner system according to claim 1, wherein: The first pipeline and the third pipeline are connected to the fifth pipeline and the sixth pipeline through a confluence pipeline.

6. The air conditioner system according to claim 1, wherein: The number of the first evaporator and the number of the second evaporator may be plural.

7. The air conditioner system according to claim 1, wherein: The throttling device includes a first throttling part and a second throttling part; The inlet of the first throttling portion is connected to the condenser, and the outlet of the first throttling portion is connected to the first evaporator; The inlet of the second throttling portion is connected to the condenser, and the outlet of the second throttling portion is connected to the second evaporator.

8. The air conditioner system according to claim 1, wherein: The system further includes a control valve box, wherein the control valve box includes the first control valve provided on the fifth pipeline and the first control valve provided on the sixth pipeline.

9. An air conditioner, characterized in that: An air conditioner system comprising the apparatus according to any one of claims 1 to 8.

10. The air conditioner according to claim 9, characterized in that including a first indoor unit, a second indoor unit and an outdoor unit; The outdoor unit includes the four-way valve, the condenser, the fifth pipeline, the sixth pipeline, the first control valve provided on the fifth pipeline, and the first control valve provided on the sixth pipeline; The first indoor unit includes a first throttling portion of the throttling device, the first evaporator, the first pipeline, the second pipeline, the first control valve provided on the first pipeline, and the first control valve provided on the second pipeline; The second indoor unit includes the second throttling portion of the throttling device, the second evaporator, the third pipeline, the fourth pipeline, the first control valve provided on the third pipeline, and the first control valve provided on the fourth pipeline.

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