Control method and device for air conditioning system and air conditioning system

Abstract

The invention relates to the technical field of air conditioners, and discloses an air conditioning system. The outdoor unit comprises an outdoor heat exchanger and an outdoor electronic expansion valve; the indoor unit comprises a first heat exchanger set and a second heat exchanger set, the first heat exchanger set comprises a first heat exchange branch and a second heat exchange branch, and the second heat exchanger set comprises a third heat exchange branch and a fourth heat exchange branch; an S port of the four-way valve is connected with the first air suction port, a D port of the four-way valve is connected with the exhaust port, a C port of the four-way valve is connected with the outdoor unit, and an E port of the four-way valve is connected with the other end of the second heat exchange branch and the other end of the fourth heat exchange branch; the first control pipeline is arranged between the two air suction ports; a first end of a three-way valve of the second control pipeline is connected with the second air suction port, a second end is connected with the D port, and a third end is connected with the other end of the first heat exchange branch and the other end of the third heat exchange branch. The method can meet the requirements of users in different rooms. The invention further discloses a control method and device for the air conditioning system.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, for example, to a control method and device for an air conditioning system, and an air conditioning system. Background Art

[0002] At present, with the improvement of living standards, users' requirements for air conditioning functions have also increased. Users in different rooms have different requirements for air conditioning. For example, potential requirements include cooling all rooms at the same time, heating all rooms at the same time, cooling some rooms and heating some rooms, reheating and dehumidification, etc.

[0003] The air conditioner provided by the related art has the following functions: cooling mode, heating mode, dehumidification mode and air supply mode.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] The air conditioner of the related art has relatively single functions and cannot meet the respective needs of users in different rooms.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a control method, a control device and an air-conditioning system for an air-conditioning system to meet the needs of users in different rooms.

[0009] In some embodiments, the air conditioning system includes: a compressor including a first air intake port, a second air intake port and an exhaust port; an outdoor unit including an outdoor heat exchanger and an outdoor electronic expansion valve connected in series; an indoor unit including a first heat exchanger group and a second heat exchanger group, the first heat exchanger group and the second heat exchanger group are installed in different indoor rooms, the first heat exchanger group includes a first heat exchange branch and a second heat exchange branch, the second heat exchanger group includes a third heat exchange branch and a fourth heat exchange branch, the first heat exchange branch is connected in parallel with the third heat exchange branch, the second heat exchange branch is connected in parallel with the fourth heat exchange branch, wherein one end of the first heat exchange branch is connected to the second heat exchange branch. One end of the third heat exchange branch is connected to the outdoor unit, one end of the third heat exchange branch and one end of the fourth heat exchange branch are both connected to the outdoor unit; a four-way valve, whose S port is connected to the first suction port, D port is connected to the exhaust port, C port is connected to the outdoor unit, and E port is connected to the other end of the second heat exchange branch and is connected to the other end of the fourth heat exchange branch; a first control pipeline is arranged between the first suction port and the second suction port, and is equipped with a solenoid valve; the second control pipeline includes a three-way valve, a first end of the three-way valve is connected to the second suction port, a second end is connected to the D port, and a third end is connected to the other end of the first heat exchange branch and is connected to the other end of the third heat exchange branch.

[0010] In some embodiments, the method includes: applied to the above-mentioned air-conditioning system, the method includes: responding to a control instruction, the control instruction includes a cooling mode or a heating mode; according to the control instruction, controlling the connection status of multiple ports of the four-way valve, the connection status of multiple ports of the three-way valve, and the on-off state of the solenoid valve.

[0011] In some embodiments, the device includes a processor and a memory storing program instructions, wherein the processor is configured to execute the control method for the air-conditioning system as described above when running the program instructions.

[0012] In some embodiments, the air conditioning system includes: a compressor including a first air intake port, a second air intake port and an exhaust port; an outdoor unit including an outdoor heat exchanger and an outdoor electronic expansion valve connected in series; an indoor unit including a first heat exchanger group and a second heat exchanger group, the first heat exchanger group and the second heat exchanger group are installed in different indoor rooms, the first heat exchanger group includes a first heat exchange branch and a second heat exchange branch, the second heat exchanger group includes a third heat exchange branch and a fourth heat exchange branch, the first heat exchange branch is connected in parallel with the third heat exchange branch, and the second heat exchange branch is connected in parallel with the fourth heat exchange branch, wherein one end of the first heat exchange branch and one end of the second heat exchange branch are both connected to the outdoor unit, and one end of the third heat exchange branch is connected to the outdoor unit. The first end and one end of the fourth heat exchange branch are both connected to the outdoor unit; a four-way valve, whose S port is connected to the first suction port, the D port is connected to the exhaust port, the C port is connected to the outdoor unit, and the E port is connected to the other end of the second heat exchange branch and to the other end of the fourth heat exchange branch; a first control pipeline is arranged between the first suction port and the second suction port, and is equipped with a solenoid valve; the second control pipeline includes a three-way valve, a first end of the three-way valve is connected to the second suction port, a second end is connected to the D port, and a third end is connected to the other end of the first heat exchange branch and to the other end of the third heat exchange branch; and a control device for an air-conditioning system as mentioned above is installed on the four-way valve, the solenoid valve and the three-way valve.

[0013] The control method, device and air conditioning system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0014] The disclosed embodiment can control the connection state of multiple ports of the four-way valve, the connection state of multiple ports of the three-way valve, and the on-off state of the solenoid valve according to the cooling mode or heating mode carried by the control instruction, so that the regulated air-conditioning system can realize the operation mode specified by the control instruction. In this way, the disclosed embodiment can adaptively regulate the pipelines of the air-conditioning system according to the needs of users in different rooms, thereby meeting the needs of users in different rooms.

[0015] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0017] Figure 1 is a structural schematic diagram of an air conditioning system provided by an embodiment of the present disclosure;

[0018] Figure 2is a schematic diagram of a control method for an air conditioning system provided by an embodiment of the present disclosure;

[0019] Figure 3 is a schematic diagram of another control method for an air conditioning system provided by an embodiment of the present disclosure;

[0020] Figure 4 is a schematic diagram of another control method for an air conditioning system provided by an embodiment of the present disclosure;

[0021] Figure 5 is a schematic diagram of another control method for an air conditioning system provided by an embodiment of the present disclosure;

[0022] Figure 6 is a schematic diagram of another control method for an air conditioning system provided by an embodiment of the present disclosure;

[0023] Figure 7-1 is an application schematic diagram of an embodiment of the present disclosure;

[0024] Figure 7-2 is another application schematic diagram of an embodiment of the present disclosure;

[0025] Figure 7-3 is another application schematic diagram of an embodiment of the present disclosure;

[0026] Figure 7-4 is another application schematic diagram of an embodiment of the present disclosure;

[0027] Figure 7-5 is another application schematic diagram of an embodiment of the present disclosure;

[0028] Figure 7-6 is another application schematic diagram of an embodiment of the present disclosure;

[0029] Figure 8 is a schematic diagram of a control device for an air conditioning system provided by an embodiment of the present disclosure;

[0030] Fig. 9 It is a schematic diagram of an air conditioning system provided by an embodiment of the present disclosure.

[0031] Reference numerals:

[0032] 10: compressor;

[0033] 101: first air intake port; 102: second air intake port; 103: exhaust port;

[0034] 201: outdoor heat exchanger; 20a: outdoor electronic expansion valve;

[0035] 300: Control device for air conditioning system;

[0036] 301: first heat exchanger group; 301a: first heat exchange branch; 301b: second heat exchange branch;

[0037] 3011a: first heat exchanger; 3012a: first electronic expansion valve;

[0038] 3011b: second heat exchanger; 3012b: second electronic expansion valve;

[0039] 302: second heat exchanger group; 302a: third heat exchange branch; 302b: fourth heat exchange branch;

[0040] 3021a: third heat exchanger; 3022a: third electronic expansion valve;

[0041] 3021b: fourth heat exchanger; 3022b: fourth electronic expansion valve;

[0042] 40: Four-way valve;

[0043] 50: first control pipeline; 50a: solenoid valve;

[0044] 60: second control pipeline; 60a: three-way valve;

[0045] 600: Air conditioning system;

[0046] 700: processor; 701: memory; 702: communication interface; 703: bus. DETAILED DESCRIPTION

[0047] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0048] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0049] Unless otherwise stated, the term "plurality" means two or more.

[0050] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0051] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0052] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0053] Combination Figure 1 As shown, the embodiment of the present disclosure provides an air conditioning system, including a compressor 10, an outdoor unit, an indoor unit, a four-way valve 40, a first control pipeline 50 and a second control pipeline 60. The compressor 10 includes a first air intake port 101, a second air intake port 102 and an exhaust port 103.

[0054] The outdoor unit includes an outdoor heat exchanger 201 and an outdoor electronic expansion valve 20a connected in series.

[0055] The indoor unit includes a first heat exchanger group 301 and a second heat exchanger group 302. The first heat exchanger group 301 and the second heat exchanger group 302 are installed in different indoor rooms.

[0056] The first heat exchanger group 301 includes a first heat exchange branch 301a and a second heat exchange branch 301b. The second heat exchanger group 302 includes a third heat exchange branch 302a and a fourth heat exchange branch 302b. The first heat exchange branch 301a is connected in parallel with the third heat exchange branch 302a, and the second heat exchange branch 301b is connected in parallel with the fourth heat exchange branch 302b. One end of the first heat exchange branch 301a and one end of the second heat exchange branch 301b are both connected to the outdoor unit, and one end of the third heat exchange branch 302a and one end of the fourth heat exchange branch 302b are both connected to the outdoor unit.

[0057] The four-way valve 40 has an S port connected to the first air intake port 101, a D port connected to the air exhaust port 103, a C port connected to the outdoor unit, and an E port connected to the other end of the second heat exchange branch 301b and to the other end of the fourth heat exchange branch 302b.

[0058] The first control pipeline 50 is disposed between the first air intake port 101 and the second air intake port 102 and is provided with a solenoid valve 50a. Thus, the on-off control of the first control pipeline can be achieved through the solenoid valve.

[0059] The second control pipeline 60 includes a three-way valve 60a, the first end of the three-way valve 60a is connected to the second air intake port 102, the second end is connected to the D port, and the third end is connected to the other end of the first heat exchange branch 301a and the other end of the third heat exchange branch 302a. Wherein, a represents the first end of the three-way valve 60a, b represents the second end of the three-way valve 60a, and c represents the third end of the three-way valve 60a. In this way, the on-off control of the first heat exchanger branch, the second heat exchange branch and the four-way valve can be realized through the three-way valve.

[0060] Optionally, the first heat exchange branch 301a includes a first heat exchanger 3011a and a first electronic expansion valve 3012a connected in series, and the second heat exchange branch 301b includes a second heat exchanger 3011b and a second electronic expansion valve 3012b connected in series. The third heat exchange branch 302a includes a third heat exchanger 3021a and a third electronic expansion valve 3022a connected in series, and the fourth heat exchange branch 302b includes a fourth heat exchanger 3021b and a fourth electronic expansion valve 3022b connected in series.

[0061] Based on the above air conditioning system, combined with Figure 2 As shown, the embodiment of the present disclosure provides a control method for an air conditioning system, comprising:

[0062] S01, the processor responds to a control instruction, where the control instruction includes a cooling mode or a heating mode.

[0063] S02, the processor controls the connection status of multiple ports of the four-way valve, the connection status of multiple ports of the three-way valve, and the on-off status of the solenoid valve according to the control instruction.

[0064] By adopting the control method for an air conditioning system provided by the embodiment of the present disclosure, the embodiment of the present disclosure can control the connection state of multiple ports of the four-way valve, the connection state of multiple ports of the three-way valve, and the on-off state of the solenoid valve according to the cooling mode or heating mode carried by the control instruction, so that the regulated air conditioning system can realize the operation mode specified by the control instruction. In this way, the embodiment of the present disclosure can adaptively regulate the pipelines of the air conditioning system according to the needs of users in different rooms, thereby meeting the needs of users in different rooms.

[0065] Optionally, Figure 7-1 A schematic diagram of an air conditioning system operating in cooling mode, wherein the pipes that are cut off are not shown. Figure 3 and Figure 7-1 As shown, when the control instruction includes a cooling mode, the processor controls the connection status of multiple ports of the four-way valve, the connection status of multiple ports of the three-way valve, and the on-off status of the solenoid valve according to the control instruction, including:

[0066] S11, the processor controls the D port of the four-way valve to be connected to the C port, and controls the E port of the four-way valve to be connected to the S port.

[0067] S12, the processor controls the first end of the three-way valve to be connected to the third end, and controls the solenoid valve to be closed.

[0068] S13, the processor controls the outdoor electronic expansion valve to open, so that the liquid refrigerant flowing out of the outdoor heat exchanger enters the first heat exchanger group and the second heat exchanger group, and then flows into the second air intake port through the three-way valve after throttling and pressure reduction and evaporation heat absorption treatment, thereby realizing the refrigeration cycle.

[0069] In this way, when the control instruction includes the cooling mode, it means that all rooms need to be cooled at the same time. At this time, the D port of the four-way valve is controlled to be connected to the C port and the E port is controlled to be connected to the S port, and the first end of the three-way valve is controlled to be connected to the third end. In this way, the liquid refrigerant flowing out of the outdoor heat exchanger can enter the first heat exchanger group and the second heat exchanger group, and after throttling and pressure reduction and evaporation heat absorption treatment in turn, it flows into the second suction port of the compressor through the three-way valve, thereby realizing the refrigeration cycle of all heat exchanger groups, so that all rooms are running in the cooling mode.

[0070] Optionally, Figure 7-2 A schematic diagram of the system showing an air conditioning system operating in heating mode, wherein the pipes that are cut off are not shown. Figure 4 and Figure 7-2 As shown, when the control instruction includes a heating mode, the processor controls the connection status of multiple ports of the four-way valve, the connection status of multiple ports of the three-way valve, and the on-off status of the solenoid valve according to the control instruction, including:

[0071] S21, the processor controls the D port of the four-way valve to be connected to the E port, and controls the C port of the four-way valve to be connected to the S port.

[0072] S22, the processor controls the second end of the three-way valve to be connected to the third end, and controls the solenoid valve to open.

[0073] S23, the processor controls the outdoor electronic expansion valve to open, so that the refrigerant flowing out through the exhaust port enters the second heat exchange branch and the fourth heat exchange branch through the four-way valve, and enters the first heat exchange branch and the third heat exchange branch through the three-way valve, and then converges and is throttled by the outdoor electronic expansion valve and evaporates and absorbs heat through the outdoor heat exchanger to realize the heating cycle.

[0074] Thus, when the control instruction includes the heating mode, it indicates that all rooms need to be heated at the same time. At this time, the D port of the four-way valve is controlled to be connected to the E port, the C port is controlled to be connected to the S port, and the second end of the three-way valve is controlled to be connected to the third end. In this way, the liquid refrigerant flowing out of the exhaust port can enter the second heat exchanger branch and the fourth heat exchange branch, and enter the first heat exchange branch and the third heat exchange branch through the three-way valve, and then merge and evaporate and absorb heat through the outdoor heat exchanger after throttling by the outdoor electronic expansion valve, thereby realizing the heating cycle of all heat exchanger groups, so that all rooms are running in the heating mode.

[0075] Optionally, the control method for the air conditioning system further includes:

[0076] The processor responds to the control instruction, which further includes a local cooling and local heating mode, a reheat dehumidification mode, a local cooling and local reheat dehumidification mode, and a local heating and local reheat dehumidification mode.

[0077] The processor controls the connection status of multiple ports of the four-way valve, the connection status of multiple ports of the three-way valve, the on-off status of the solenoid valve, and the opening degree of the electronic expansion valve according to the control instruction.

[0078] In this way, the embodiment of the present disclosure can control the connection status of multiple ports of the four-way valve, the connection status of multiple ports of the three-way valve, the on-off status of the solenoid valve, and the opening degree of the electronic expansion valve according to the local cooling and local heating mode or the reheat dehumidification mode, the local cooling and local reheat dehumidification mode, and the local heating and local reheat dehumidification mode carried by the control instruction, so that the regulated air-conditioning system can realize the operation mode specified by the control instruction. In this way, the embodiment of the present disclosure can adaptively regulate the pipelines of the air-conditioning system according to the needs of users in different rooms, thereby meeting the needs of users in different rooms.

[0079] Optionally, Figure 7-3 A schematic diagram showing an air conditioning system operating in a local cooling and local heating mode, wherein the pipes that are cut off are not shown. Figure 5 and Figure 7-3 As shown, when the control instruction includes a local cooling and local heating mode, the processor controls the connection status of multiple ports of the four-way valve, the connection status of multiple ports of the three-way valve, the on-off state of the solenoid valve, and the opening degree of the electronic expansion valve according to the control instruction, including:

[0080] S31, the processor controls the D port of the four-way valve to be connected to the E port, and controls the C port of the four-way valve to be connected to the E port.

[0081] S32, the processor controls the first end of the three-way valve to be connected to the third end, and controls the solenoid valve to be closed.

[0082] S33, the processor controls the second electronic expansion valve and the third electronic expansion valve to close, so that the refrigerant passing through the exhaust port enters the fourth heat exchanger through the E port of the four-way valve for cooling, and part of the cooled refrigerant evaporates and absorbs heat in the first heat exchanger and then returns to the second air intake port to realize the refrigeration cycle, and part of the cooled refrigerant enters the outdoor unit to evaporate and absorb heat and then returns to the first air intake port to realize the local cooling and local heating cycle.

[0083] In this way, when the control instruction includes the local cooling and local heating mode, it means that one room needs to be cooled and the other room needs to be heated. At this time, the D port of the four-way valve is controlled to be connected to the E port and the C port is controlled to be connected to the S port, and the first end of the three-way valve is controlled to be connected to the third end. In this way, the refrigerant flowing out of the exhaust port enters the fourth heat exchanger through the E port of the four-way valve for cooling, and the cooled refrigerant is divided into two paths, one path is part of the refrigerant that evaporates and absorbs heat in the first heat exchanger and then returns to the second air intake port to realize the refrigeration cycle in the room where the first heat exchanger is located, and the other path is part of the refrigerant that enters the outdoor unit for evaporation and absorption of heat and then returns to the first air intake port to realize the heating cycle in the room where the fourth heat exchanger is located, thereby realizing the local cooling and local heating mode.

[0084] Optionally, Figure 7-4 A schematic diagram showing an air conditioning system in a reheat dehumidification mode or a non-stop defrosting mode, wherein the pipes that are cut off are not shown. Figure 6 and Figure 7-4 As shown, when the control instruction includes a reheat dehumidification mode or non-stop defrosting, the processor controls the connection status of multiple ports of the four-way valve, the connection status of multiple ports of the three-way valve, the on-off status of the solenoid valve, and the opening degree of the electronic expansion valve according to the control instruction, including:

[0085] S41, the processor controls the D port of the four-way valve to be connected to the E port, and controls the C port of the four-way valve to be connected to the S port.

[0086] S42, the processor controls the first end of the three-way valve to be connected to the third end, and controls the solenoid valve to be closed, so that the refrigerant passing through the exhaust port is cooled in the second heat exchanger and the fourth heat exchanger respectively, and part of the cooled refrigerant enters the first heat exchanger and the third heat exchanger through throttling to evaporate and absorb heat, and then returns to the second air intake port, and part of the cooled refrigerant enters the outdoor unit to evaporate and absorb heat, and then returns to the first air intake port, so as to achieve reheat dehumidification.

[0087] S43, the processor controls the opening degree of the second electronic expansion valve to control the amount of reheat, and controls the opening degree of the first electronic expansion valve to control the amount of dehumidification.

[0088] In this way, when the control instruction includes the reheat dehumidification or non-stop defrosting mode, it means that the room needs to perform the reheat dehumidification or non-stop dehumidification mode. At this time, the D port of the four-way valve is controlled to be connected to the E port and the C port is controlled to be connected to the S port, and the first end of the three-way valve is controlled to be connected to the third end, and the solenoid valve is controlled to be closed. In this way, the refrigerant flowing out of the exhaust port enters the second heat exchanger and the fourth heat exchanger for cooling through the E port of the four-way valve respectively. The cooled refrigerant is divided into two paths, one is part of the refrigerant evaporating and absorbing heat through the first heat exchanger and the third heat exchanger and then returns to the second air intake port, and the other is part of the refrigerant entering the outdoor unit and evaporating and absorbing heat and then returns to the first air intake end, so as to realize the reheat dehumidification function of the room. In addition, by controlling the opening of the second electronic expansion valve, the refrigerant flow rate of the refrigerant through the exhaust port in the second heat exchanger can be controlled, thereby realizing the regulation of the reheat amount. At the same time, by controlling the opening of the first electronic expansion valve, the flow rate of the cooled refrigerant entering the second heat exchanger after throttling can be controlled to realize the regulation of the dehumidification amount.

[0089] It should be noted that when the air conditioning system is running in the non-stop defrosting mode, the control steps of this method are the same as those of the air conditioning system in the reheating dehumidification mode. In the non-stop defrosting mode, the indoor air is cooled by the evaporator and then heated by the reheater to maintain constant inlet and outlet air temperatures. In this way, the indoor unit can continue to supply air and the outlet air temperature is constant when the outdoor unit is defrosting.

[0090] Optionally, Figure 7-5 The schematic diagram of the air conditioning system in the local cooling and local reheating dehumidification mode is shown, wherein the pipes that are cut off are not shown. Figure 7-5 and Figure 7-6 As shown, when the control instruction includes a local cooling and local reheat dehumidification mode or a local heating and local reheat dehumidification mode, the processor controls the connection status of multiple ports of the four-way valve, the connection status of multiple ports of the three-way valve, the on-off state of the solenoid valve, and the opening degree of the electronic expansion valve according to the control instruction, including:

[0091] The processor controls the D port of the four-way valve to be connected to the E port, and controls the C port of the four-way valve to be connected to the S port.

[0092] The processor controls the first end of the three-way valve to be connected to the third end, and controls the solenoid valve to be closed.

[0093] The processor controls the fourth electronic expansion valve to be closed to realize the local cooling and local reheating and dehumidification mode, or controls the third electronic expansion valve to be closed to realize the local heating and local reheating and dehumidification mode.

[0094] In this way, Figure 7-5As shown, when the control instruction includes local cooling and local reheat dehumidification modes, it means that one room needs cooling and the other room needs reheat dehumidification. At this time, the D port of the four-way valve is controlled to be connected to the E port and the C port is controlled to be connected to the S port, and the first end of the three-way valve is controlled to be connected to the third end, and the solenoid valve is controlled to be closed. At the same time, the fourth electronic expansion valve is controlled to be closed. In this way, the refrigerant flowing out of the exhaust port enters the second heat exchanger through the E port of the four-way valve for cooling. The cooled refrigerant is divided into two paths, one path is part of the refrigerant that evaporates and absorbs heat through the first heat exchanger and the third heat exchanger and then returns to the second air intake port, and the other path is part of the refrigerant that enters the outdoor unit and evaporates and absorbs heat and then returns to the first air intake end. In this way, the first heat exchanger group realizes reheat dehumidification, and the second heat exchanger group realizes cooling, thereby realizing the local cooling and local reheat dehumidification modes.

[0095] like Figure 7-6 As shown, the control instructions include local heating and local reheat dehumidification modes, indicating that one room needs heating and the other room needs reheat dehumidification. At this time, the D port of the four-way valve is controlled to be connected to the E port and the C port is controlled to be connected to the S port, and the first end of the three-way valve is controlled to be connected to the third end, and the solenoid valve is controlled to be closed. At the same time, the third electronic expansion valve is controlled to be closed. In this way, the refrigerant flowing out of the exhaust port enters the second heat exchanger and the fourth heat exchanger through the E port of the four-way valve for cooling respectively. The cooled refrigerant is divided into two paths, one path is part of the refrigerant returning to the second air intake port after evaporation and heat absorption in the first heat exchanger, and the other path is part of the refrigerant returning to the first air intake port after evaporation and heat absorption in the outdoor unit. In this way, the first heat exchanger group realizes reheat dehumidification, and the second heat exchanger group realizes heating, thereby realizing the local heating and local reheat dehumidification modes.

[0096] Combination Figure 8 As shown, the embodiment of the present disclosure provides a control device 300 for an air conditioning system, including a processor 700 and a memory 701. Optionally, the device may also include a communication interface 702 and a bus 703. The processor 700, the communication interface 702, and the memory 701 may communicate with each other through the bus 703. The communication interface 702 may be used for information transmission. The processor 700 may call the logic instructions in the memory 701 to execute the control method for the air conditioning system of the above embodiment.

[0097] In addition, the logic instructions in the memory 701 described above may be implemented in the form of software functional units and when sold or used as independent products, may be stored in a computer-readable storage medium.

[0098] The memory 701 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 700 executes the function application and data processing by running the program instructions / modules stored in the memory 701, that is, the control method for the air conditioning system in the above embodiment is implemented.

[0099] The memory 701 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 701 may include a high-speed random access memory and may also include a non-volatile memory.

[0100] Combination Fig. 9 As shown, an embodiment of the present disclosure provides an air conditioning system 600, including a compressor, an outdoor unit, an indoor unit, a four-way valve, a first control pipeline, a second control pipeline and the above-mentioned control device 300 for the air conditioning system. The compressor includes a first air intake port, a second air intake port and an exhaust port. The outdoor unit includes an outdoor heat exchanger and an outdoor electronic expansion valve connected in series. The indoor unit includes a first heat exchanger group and a second heat exchanger group, the first heat exchanger group and the second heat exchanger group are installed in different indoor rooms, the first heat exchanger group includes a first heat exchange branch and a second heat exchange branch, the second heat exchanger group includes a third heat exchange branch and a fourth heat exchange branch, the first heat exchange branch is connected in parallel with the third heat exchange branch, and the second heat exchange branch is connected in parallel with the fourth heat exchange branch, wherein one end of the first heat exchange branch and one end of the second heat exchange branch are both connected to the outdoor unit, and one end of the third heat exchange branch and one end of the fourth heat exchange branch are both connected to the outdoor unit. A four-way valve, whose S port is connected to the first air intake port, D port is connected to the exhaust port, C port is connected to the outdoor unit, and E port is connected to the other end of the second heat exchange branch and to the other end of the fourth heat exchange branch. The first control pipeline is arranged between the first air intake port and the second air intake port, and is equipped with a solenoid valve. The second control pipeline includes a three-way valve, the first end of the three-way valve is connected to the second air intake port, the second end is connected to the D port, and the third end is connected to the other end of the first heat exchange branch and to the other end of the third heat exchange branch. The control device for the air-conditioning system is installed on the four-way valve, the solenoid valve and the three-way valve. The installation relationship described here is not limited to placement inside the product, but also includes installation connections with other components of the product, including but not limited to physical connections, electrical connections or signal transmission connections.

[0101] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned control method for an air-conditioning system.

[0102] The computer-readable storage medium mentioned above may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0103] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes, or a transient storage medium.

[0104] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0105] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0106] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0107] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. An air conditioning system, characterized in that: include: A compressor including a first suction port, a second suction port, and an exhaust port; An outdoor unit, comprising an outdoor heat exchanger and an outdoor electronic expansion valve connected in series; The indoor unit comprises a first heat exchanger group and a second heat exchanger group, the first heat exchanger group and the second heat exchanger group are installed in different indoor rooms, the first heat exchanger group comprises a first heat exchange branch and a second heat exchange branch, the second heat exchanger group comprises a third heat exchange branch and a fourth heat exchange branch, the first heat exchange branch is connected in parallel with the third heat exchange branch, the second heat exchange branch is connected in parallel with the fourth heat exchange branch, wherein one end of the first heat exchange branch and one end of the second heat exchange branch are both connected to the outdoor unit, and one end of the third heat exchange branch and one end of the fourth heat exchange branch are both connected to the outdoor unit; A four-way valve, wherein the S port is connected to the first air suction port, the D port is connected to the air discharge port, the C port is connected to the outdoor unit, and the E port is connected to the other end of the second heat exchange branch and to the other end of the fourth heat exchange branch; A first control pipeline is arranged between the first air suction port and the second air suction port and is equipped with a solenoid valve; The second control pipeline includes a three-way valve, a first end of the three-way valve is connected to the second suction port, a second end is connected to the D port, and a third end is connected to the other end of the first heat exchange branch and the other end of the third heat exchange branch.

2. The air conditioning system according to claim 1, characterized in that: The first heat exchange branch comprises a first heat exchanger and a first electronic expansion valve connected in series, and the second heat exchange branch comprises a second heat exchanger and a second electronic expansion valve connected in series; The third heat exchange branch includes a third heat exchanger and a third electronic expansion valve connected in series, and the fourth heat exchange branch includes a fourth heat exchanger and a fourth electronic expansion valve connected in series.

3. A control method for an air conditioning system, characterized in that: Applied to the air conditioning system according to claim 1 or 2, the method comprises: In response to a control instruction, the control instruction includes a cooling mode or a heating mode; According to the control instructions, the connection status of multiple ports of the four-way valve, the connection status of multiple ports of the three-way valve and the on-off status of the solenoid valve are controlled.

4. The method according to claim 3, characterized in that In the case where the control instruction includes a cooling mode, controlling the connection states of the multiple ports of the four-way valve, the connection states of the multiple ports of the three-way valve, and the on-off state of the solenoid valve according to the control instruction includes: Control the D port of the four-way valve to be connected to the C port, and control the E port of the four-way valve to be connected to the S port; Control the first end of the three-way valve to be connected to the third end, and control the solenoid valve to be closed; The outdoor electronic expansion valve is controlled to open so that the liquid refrigerant flowing out of the outdoor heat exchanger enters the first heat exchanger group and the second heat exchanger group, and then flows into the second suction port through the three-way valve after throttling and pressure reduction and evaporation heat absorption treatment to realize the refrigeration cycle.

5. The method according to claim 3, characterized in that: In the case where the control instruction includes a heating mode, controlling the connection states of the multiple ports of the four-way valve, the connection states of the multiple ports of the three-way valve, and the on-off state of the solenoid valve according to the control instruction includes: Control the D port of the four-way valve to be connected to the E port, and control the C port of the four-way valve to be connected to the S port; Control the second end of the three-way valve to be connected to the third end, and control the solenoid valve to open; The outdoor electronic expansion valve is controlled to open so that the refrigerant flowing out through the exhaust port enters the second heat exchange branch and the fourth heat exchange branch through the four-way valve, and enters the first heat exchange branch and the third heat exchange branch through the three-way valve, and then converges and is throttled by the outdoor electronic expansion valve and evaporates and absorbs heat through the outdoor heat exchanger to realize the heating cycle.

6. The method according to claim 3, characterized in that The first heat exchange branch comprises a first heat exchanger and a first electronic expansion valve connected in series, and the second heat exchange branch comprises a second heat exchanger and a second electronic expansion valve connected in series; The third heat exchange branch includes a third heat exchanger and a third electronic expansion valve connected in series, and the fourth heat exchange branch includes a fourth heat exchanger and a fourth electronic expansion valve connected in series; the method further includes: In response to the control instruction, the control instruction further includes a local cooling and local heating mode, a reheat dehumidification mode, a local cooling and local reheat dehumidification mode, and a local heating and local reheat dehumidification mode; According to the control instructions, the connection status of multiple ports of the four-way valve, the connection status of multiple ports of the three-way valve, the on-off status of the solenoid valve and the opening degree of the electronic expansion valve are controlled.

7. The method according to claim 6, characterized in that In the case where the control instruction includes a local cooling and local heating mode, controlling the connection status of multiple ports of the four-way valve, the connection status of multiple ports of the three-way valve, the on-off status of the solenoid valve, and the opening degree of the electronic expansion valve according to the control instruction includes: Control the D port of the four-way valve to be connected to the E port, and control the C port of the four-way valve to be connected to the E port; Control the first end of the three-way valve to be connected to the third end, and control the solenoid valve to be closed; The second electronic expansion valve and the third electronic expansion valve are controlled to be closed so that the refrigerant passing through the exhaust port enters the fourth heat exchanger through the E port of the four-way valve for cooling, and part of the cooled refrigerant evaporates and absorbs heat in the first heat exchanger and then returns to the second suction port to realize the refrigeration cycle, and part of the cooled refrigerant enters the outdoor unit to evaporate and absorb heat and then returns to the first suction port to realize the local cooling and local heating cycle.

8. The method according to claim 6, characterized in that In the case where the control instruction includes a reheat dehumidification mode or non-stop defrosting, the control of the connection status of multiple ports of the four-way valve, the connection status of multiple ports of the three-way valve, the on-off status of the solenoid valve, and the opening degree of the electronic expansion valve according to the control instruction includes: Control the D port of the four-way valve to be connected to the E port, and control the C port of the four-way valve to be connected to the S port; The first end of the three-way valve is controlled to be connected with the third end, and the solenoid valve is controlled to be closed, so that the refrigerant passing through the exhaust port is cooled in the second heat exchanger and the fourth heat exchanger respectively, and part of the cooled refrigerant enters the first heat exchanger and the third heat exchanger through throttling to evaporate and absorb heat, and then returns to the second air intake port, and part of the cooled refrigerant enters the outdoor unit to evaporate and absorb heat, and then returns to the first air intake port, so as to realize reheat dehumidification or non-stop defrosting; The opening degree of the second electronic expansion valve is controlled to control the amount of reheat, and the opening degree of the first electronic expansion valve is controlled to control the amount of dehumidification.

9. The method according to claim 6, characterized in that In the case where the control instruction includes a local cooling and local reheat dehumidification mode or a local heating and local reheat dehumidification mode, the control of the connection states of the multiple ports of the four-way valve, the connection states of the multiple ports of the three-way valve, the on-off state of the solenoid valve, and the opening degree of the electronic expansion valve according to the control instruction includes: Control the D port of the four-way valve to be connected to the E port, and control the C port of the four-way valve to be connected to the S port; Control the first end of the three-way valve to be connected to the third end, and control the solenoid valve to be closed; The fourth electronic expansion valve is controlled to be closed to realize the local cooling and local reheating and dehumidification mode, or the third electronic expansion valve is controlled to be closed to realize the local heating and local reheating and dehumidification mode.

10. A control device for an air conditioning system, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the control method for an air conditioning system according to any one of claims 3 to 9 when running the program instructions.

11. An air conditioning system, characterized in that: include: A compressor including a first suction port, a second suction port, and an exhaust port; An outdoor unit, comprising an outdoor heat exchanger and an outdoor electronic expansion valve connected in series; The indoor unit comprises a first heat exchanger group and a second heat exchanger group, the first heat exchanger group and the second heat exchanger group are installed in different indoor rooms, the first heat exchanger group comprises a first heat exchange branch and a second heat exchange branch, the second heat exchanger group comprises a third heat exchange branch and a fourth heat exchange branch, the first heat exchange branch is connected in parallel with the third heat exchange branch, the second heat exchange branch is connected in parallel with the fourth heat exchange branch, wherein one end of the first heat exchange branch and one end of the second heat exchange branch are both connected to the outdoor unit, and one end of the third heat exchange branch and one end of the fourth heat exchange branch are both connected to the outdoor unit; A four-way valve, wherein the S port is connected to the first air suction port, the D port is connected to the air discharge port, the C port is connected to the outdoor unit, and the E port is connected to the other end of the second heat exchange branch and to the other end of the fourth heat exchange branch; A first control pipeline is arranged between the first air suction port and the second air suction port and is equipped with a solenoid valve; A second control pipeline includes a three-way valve, a first end of the three-way valve is connected to the second suction port, a second end is connected to the D port, and a third end is connected to the other end of the first heat exchange branch and the other end of the third heat exchange branch; and The control device for an air conditioning system according to claim 10 is installed in the four-way valve, the solenoid valve and the three-way valve.

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