Air conditioning system, control method, control device, and computer-readable storage medium

Abstract

The present invention discloses an air-conditioning system, a control method, a control device, and a computer-readable storage medium, which relate to the field of air-conditioning and are used to increase the working modes of the air-conditioning system. The air-conditioning system includes a compressor, an outdoor heat exchanger, an indoor heat exchanger, an accumulator, a first regulating valve, and a second regulating valve. The compressor includes an inlet and an outlet. The first regulating valve is located downstream of the compressor, and the first regulating valve is connected to the compressor, the outdoor heat exchanger, and the accumulator. The second regulating valve is also located downstream of the compressor, and the second regulating valve is connected to the compressor, the accumulator, and the indoor heat exchanger. The first regulating valve and the second regulating valve are configured to adjust their own ranges so that at least one of the outdoor heat exchanger, the indoor heat exchanger, and the accumulator is configured as a condenser, and at least another one of them is configured as an evaporator. The working modes of the above technical solution are very rich.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning, and in particular to an air conditioning system, a control method, a control device, and a computer-readable storage medium. Background Art

[0002] When the heat pump air conditioning system is heating in winter, the outdoor heat exchanger is at a low temperature and absorbs heat from the outside, which makes it very easy to frost under certain humidity conditions.

[0003] To address the defrosting problem, most current air conditioning units without energy storage use a reverse cycle defrosting method, absorbing heat from the indoor air and releasing it to the outdoor heat exchanger. This defrosts the air at the expense of indoor heating, thus reducing comfort. Alternatively, air conditioning systems with energy storage use the accumulator as the evaporator, absorbing heat from the accumulator and releasing it to the outdoor heat exchanger to achieve the desired defrosting effect. Summary of the Invention

[0004] The inventors have found through research that: in the related art, although the problem of heat absorption into the room can be avoided during defrosting, it is still impossible to heat the room at the same time, and the indoor comfort will still be reduced.

[0005] To this end, the present invention provides an air-conditioning system, a control method, a control device, and a computer-readable storage medium to increase the operating mode of the air-conditioning system.

[0006] An embodiment of the present invention provides an air conditioning system, comprising:

[0007] compressor, including inlet and outlet;

[0008] outdoor heat exchanger;

[0009] Indoor heat exchanger;

[0010] accumulator;

[0011] a first regulating valve located downstream of the compressor, and connected to the compressor, the outdoor heat exchanger, and the accumulator; and

[0012] a second regulating valve, also located downstream of the compressor, and connected to the compressor, the accumulator, and the indoor heat exchanger;

[0013] The first regulating valve and the second regulating valve are configured to adjust their own ranges so that at least one of the outdoor heat exchanger, the indoor heat exchanger, and the accumulator is configured as a condenser, and at least another one of them is configured as an evaporator.

[0014] In some embodiments, the air conditioning system further comprises:

[0015] A first pipeline, one end of which is connected to the outlet of the accumulator, the inlet of the accumulator, and the outdoor heat exchanger; and the other end of which is connected to one end of the indoor heat exchanger; and

[0016] The second pipeline has one end connected to the second regulating valve and the other end connected to the other end of the indoor heat exchanger.

[0017] In some embodiments, the other end of the second pipeline is further connected to the inlet of the accumulator.

[0018] In some embodiments, the first regulating valve includes a first valve port, a second valve port, a third valve port, and a fourth valve port;

[0019] The first valve port of the first regulating valve is connected to the outlet of the compressor; the second valve port of the first regulating valve is connected to one end of the outdoor heat exchanger; the third valve port of the first regulating valve is connected to the outlet of the accumulator and the inlet of the compressor; the fourth valve port of the first regulating valve is connected to the third valve port of the first regulating valve through a first throttle member;

[0020] Wherein, when the first regulating valve is in the first state, the first valve port and the second valve port of the first regulating valve are connected, and the third valve port and the fourth valve port of the first regulating valve are connected;

[0021] When the first regulating valve is in the second state, the first valve port and the fourth valve port of the first regulating valve are connected, and the second valve port and the third valve port of the first regulating valve are connected.

[0022] In some embodiments, the second regulating valve includes a first valve port, a second valve port, a third valve port, and a fourth valve port;

[0023] The first valve port of the second regulating valve is connected to the outlet of the compressor; the second valve port of the second regulating valve is connected to the third valve port of the second regulating valve through a second throttle member; the third valve port of the second regulating valve is connected to the outlet of the accumulator, the indoor heat exchanger, and the inlet of the compressor; the fourth valve port of the second regulating valve is connected to the second pipeline;

[0024] Wherein, when the second regulating valve is in the first state, the first valve port and the second valve port of the second regulating valve are connected, and the third valve port and the fourth valve port of the second regulating valve are connected;

[0025] When the second regulating valve is in the second state, the first valve port and the fourth valve port of the second regulating valve are connected, and the second valve port and the third valve port of the second regulating valve are connected.

[0026] In some embodiments, the air conditioning system further comprises:

[0027] The subcooler includes a first flow channel and a second flow channel; the first flow channel is located between the other end of the first pipeline and the outdoor heat exchanger; the second flow channel is connected to the first regulating valve, the second regulating valve, and the inlet of the compressor.

[0028] In some embodiments, the air conditioning system further comprises:

[0029] The first throttle valve is located between the first flow channel of the subcooler and the outdoor heat exchanger.

[0030] In some embodiments, the air conditioning system further comprises:

[0031] A second throttle valve is located between the first flow channel and the second flow channel of the subcooler.

[0032] In some embodiments, the air conditioning system further comprises:

[0033] A bypass valve is arranged in the first pipeline; wherein the bypass valve is provided between the connection between the inlet of the accumulator and the first pipeline, and between the connection between the outlet of the accumulator and the first pipeline.

[0034] In some embodiments, the air conditioning system further comprises:

[0035] A third throttle valve, the outlet of the accumulator is connected to the first pipeline through the third throttle valve.

[0036] In some embodiments, the air conditioning system further comprises:

[0037] a first connecting branch connecting the inlet of the accumulator and the first pipeline;

[0038] a second connecting branch, arranged in parallel with the first connecting branch, and also connecting the inlet of the accumulator and the first pipeline;

[0039] a fourth throttle valve, arranged on the first connecting branch; and

[0040] The cold release valve is arranged on the second connecting branch.

[0041] In some embodiments, the air conditioning system further comprises:

[0042] a first air pipe, connecting the inlet of the accumulator and the second pipeline; or connecting the inlet of the accumulator and the outlet of the compressor; and

[0043] The high-pressure gas valve is arranged on the first gas pipe.

[0044] In some embodiments, the air conditioning system further comprises:

[0045] The outlet of the accumulator is connected to the third pipeline through the second air pipe;

[0046] The heat release valve is arranged on the second air pipe.

[0047] In some embodiments, the air conditioning system further comprises:

[0048] The liquid storage tank includes a first inlet, an interface and a first outlet; the first inlet is connected to the first pipeline through a liquid inlet valve, the interface is connected to the first air pipe through a pressurizing valve, and is connected to the second air pipe through a capillary tube and a gas balance valve, and the first outlet is connected to the second air pipe through a capillary tube and a drain valve.

[0049] In some embodiments, the air conditioning system further comprises:

[0050] The liquid storage tank includes a second inlet and a second outlet; the second inlet is connected to the first pipeline through a gas balance valve; the second outlet is connected to the second gas pipe through a drain valve and a capillary tube.

[0051] An embodiment of the present invention further provides an air conditioning control method, wherein the air conditioning is an air conditioning system provided by any technical solution of the present invention, and the control method includes:

[0052] determining an operating mode of the air conditioning system;

[0053] The states of the outdoor heat exchanger, the indoor heat exchanger, the accumulator, the first regulating valve and the second regulating valve in the air-conditioning system are controlled according to a preset control strategy corresponding to the working mode.

[0054] In some embodiments, determining the operating mode of the air conditioning system includes:

[0055] During the period when the power supply system has the first electricity price, the energy accumulator is determined to be in one of the following states: non-working state, cold releasing state or heat releasing state; during the period when the power supply system has the second electricity price, the working mode of the air-conditioning system is determined to be a mode corresponding to the energy accumulator being in the non-working state, cold storing state or heat storing state.

[0056] In some embodiments, the operating mode of the air-conditioning system includes a conventional cooling mode; in the conventional cooling mode, the first regulating valve and the second regulating valve are both powered off, and the accumulator is in a non-working state; the outdoor heat exchanger is used as a condenser, and the indoor heat exchanger is used as an evaporator.

[0057] In some embodiments, the operating mode of the air-conditioning system includes a full cold storage mode; in the full cold storage mode, the first regulating valve and the second regulating valve are both powered off, the indoor heat exchanger does not work, the outdoor heat exchanger is used as a condenser, and the accumulator is used as an evaporator.

[0058] In some embodiments, the operating mode of the air-conditioning system includes a cold storage and cooling mode; in the cold storage and cooling mode, the first regulating valve and the second regulating valve are both powered off, the outdoor heat exchanger is used as a condenser, the accumulator is used as an evaporator, and the indoor heat exchanger is also used as an evaporator.

[0059] In some embodiments, the operating mode of the air-conditioning system includes a supercooling release mode; in the supercooling release mode, the first regulating valve and the second regulating valve are both powered off, the outdoor heat exchanger is used as a condenser, the accumulator is used as a supercooler, and the indoor heat exchanger is also used as an evaporator.

[0060] In some embodiments, the operating mode of the air-conditioning system includes a condensing cooling mode; in the condensing cooling mode, the first regulating valve is energized, the second regulating valve is de-energized, the outdoor heat exchanger is not working, the accumulator is used as a condenser, and the indoor heat exchanger is also used as an evaporator.

[0061] In some embodiments, the operating mode of the air-conditioning system includes a parallel cooling release mode; in the parallel cooling release mode, the first regulating valve and the second regulating valve are both powered off, the outdoor heat exchanger is used as a condenser, the accumulator is used as a condenser, and the indoor heat exchanger is used as an evaporator.

[0062] In some embodiments, the operating mode of the air-conditioning system includes a conventional heating mode; in the conventional heating mode, the first regulating valve and the second regulating valve are both energized, the outdoor heat exchanger is used as an evaporator, the accumulator is not working, and the indoor heat exchanger is used as a condenser.

[0063] In some embodiments, the operating mode of the air-conditioning system includes a full heat storage mode; in the full heat storage mode, the first regulating valve is energized, the second regulating valve is de-energized, the outdoor heat exchanger is used as an evaporator, the accumulator is used as a condenser, and the indoor heat exchanger is not working.

[0064] In some embodiments, the operating mode of the air-conditioning system includes a heat storage and heating mode; in the heat storage and heating mode, the first regulating valve and the second regulating valve are both energized, the outdoor heat exchanger is used as an evaporator, the accumulator is used as a condenser, and the indoor heat exchanger is used as a condenser.

[0065] In some embodiments, the operating mode of the air-conditioning system includes a mixed heat release mode; in the mixed heat release mode, the first regulating valve and the second regulating valve are both energized, the outdoor heat exchanger is used as an evaporator, the accumulator is used as an evaporator, and the indoor heat exchanger is used as a condenser.

[0066] In some embodiments, the operating mode of the air-conditioning system includes an independent heat release mode; in the independent heat release mode, the first regulating valve and the second regulating valve are both energized, the outdoor heat exchanger is not working, the accumulator is used as an evaporator, and the indoor heat exchanger is used as a condenser.

[0067] In some embodiments, the operating mode of the air-conditioning system includes a discontinuous heating and defrosting mode; in the discontinuous heating and defrosting mode, the first regulating valve and the second regulating valve are both powered off, the outdoor heat exchanger is used as a condenser, the accumulator is used as an evaporator, and the indoor heat exchanger is not working.

[0068] In some embodiments, the operating mode of the air-conditioning system includes a continuous heating and defrosting mode; in the continuous heating and defrosting mode, the first regulating valve is powered off and the second regulating valve is powered on, the outdoor heat exchanger is used as a condenser, the accumulator is used as an evaporator, and the indoor heat exchanger is used as a condenser.

[0069] An embodiment of the present invention further provides a control device for an air conditioning system, comprising:

[0070] a memory configured to store instructions;

[0071] The processor is coupled to the memory, and is configured to execute the control method provided by any technical solution of the present invention based on the instructions stored in the memory.

[0072] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the control method provided by any technical solution of the present invention is implemented.

[0073] The air-conditioning system provided by the above technical solution includes a first regulating component, a second regulating component, an accumulator, an outdoor heat exchanger, and an indoor heat exchanger. Through the valve position control of the first regulating component and the second regulating component, any one of the accumulator, the outdoor heat exchanger, and the indoor heat exchanger can be used as a condenser, and the other as an evaporator, thereby realizing the rich functions of the air-conditioning system. In addition, the above technical solution broadens the use scenarios of the accumulator and can more fully realize the value of energy storage. The accumulator can store energy during off-peak electricity price periods and release energy during peak electricity price periods, reducing the system's power consumption at this time and enabling continuous heating during defrosting.

[0074] It can be seen that the air-conditioning system provided by the above technical solution is based on the heat pump air-conditioning model. Through the switching of pipelines and valves, on the basis of the 12 functions of energy storage air conditioning, conventional refrigeration, complete cold storage, simultaneous cold storage during refrigeration, supercooling cold release, condensation cold release, parallel cold release, conventional heating, complete heat storage, simultaneous heat storage during heating, mixed heat release, independent heat release, and non-continuous heating and defrosting, it can further realize continuous heating and defrosting, broaden the scope of use of the energy storage system to a greater extent, and increase indoor comfort during defrosting. It has very rich functions and can meet the diverse usage needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0076] Figure 1 Schematic diagram of the air conditioning system principles provided in some embodiments of the present invention.

[0077] Figure 2 A schematic diagram of the refrigerant flow path of an air-conditioning system in conventional cooling mode provided in some embodiments of the present invention.

[0078] Figure 3 A schematic diagram of the refrigerant flow path of an air-conditioning system in full cold storage mode provided in some embodiments of the present invention.

[0079] Figure 4 A schematic diagram of the refrigerant flow path of an air-conditioning system in cold storage and cooling mode provided in some embodiments of the present invention.

[0080] Figure 5 A schematic diagram of the refrigerant flow path of an air-conditioning system in a supercooling release mode provided in some embodiments of the present invention.

[0081] Figure 6 A schematic diagram of the refrigerant flow path of an air-conditioning system in condensing and cooling mode provided in some embodiments of the present invention.

[0082] Figure 7 A schematic diagram of the refrigerant flow path of an air-conditioning system in parallel cooling mode provided in some embodiments of the present invention.

[0083] Figure 8 A schematic diagram of the refrigerant flow path of an air-conditioning system in a conventional heating mode provided in some embodiments of the present invention.

[0084] Figure 9 A schematic diagram of the refrigerant flow path of an air-conditioning system in full heat storage mode provided in some embodiments of the present invention.

[0085] Figure 10A schematic diagram of the refrigerant flow path of an air-conditioning system in a heat storage and heating mode provided in some embodiments of the present invention.

[0086] Figure 11 A schematic diagram of the refrigerant flow path of an air-conditioning system in a mixed heat release and full cooling mode provided by some embodiments of the present invention.

[0087] Figure 12 A schematic diagram of the refrigerant flow path of an air-conditioning system in an independent heat release mode provided in some embodiments of the present invention.

[0088] Figure 13 A schematic diagram of the refrigerant flow path of an air-conditioning system in a discontinuous heating and defrosting mode provided by some embodiments of the present invention.

[0089] Figure 14 A schematic diagram of the refrigerant flow path of an air-conditioning system in a continuous heating and defrosting mode provided in some embodiments of the present invention.

[0090] Figure 15 Schematic diagram of the air conditioning system principles provided for other embodiments of the present invention.

[0091] Figure 16 Schematic diagram of the air conditioning system provided in some embodiments of the present invention.

[0092] Figure 17 Schematic diagram of refrigerant flow path when refrigerant is stored in a liquid storage tank of an air-conditioning system provided in some further embodiments of the present invention.

[0093] Figure 18 Schematic diagram of refrigerant flow path when refrigerant is released from a liquid storage tank of an air-conditioning system provided in some further embodiments of the present invention.

[0094] Figure 19 Schematic diagram of the air conditioning system provided in some further embodiments of the present invention.

[0095] Figure 20 Schematic diagram of refrigerant flow path when refrigerant is stored in a liquid storage tank of an air-conditioning system provided in some further embodiments of the present invention.

[0096] Figure 21 Schematic diagram of refrigerant flow path when refrigerant is released from a liquid storage tank of an air-conditioning system provided in some further embodiments of the present invention.

[0097] Reference numerals:

[0098] 101. Compressor; 102. First regulating valve; 103. Second regulating valve; 104. Outdoor heat exchanger; 105. First throttle valve; 106. Second throttle valve; 107. Subcooler; 108. Gas-liquid separator;

[0099] First pipeline 3; 4, second pipeline; 7, indoor heat exchanger; 3', first branch; 4', second branch; 5', third branch;

[0100] 201, accumulator; 202, first air pipe; 203, second air pipe; 204, first liquid pipe; 204', first connecting branch; 204", second connecting branch; 205, second liquid pipe; 206, fourth throttle valve; 207, cold release valve; 208, high-pressure air valve; 209, third throttle valve; 210, heat release valve; 211, bypass valve; 220, liquid storage tank; 220a, first inlet; 221, liquid inlet valve; 220b, interface; 220, liquid storage tank; 221, liquid inlet valve; 222, pressurizing valve; 223, liquid drain valve; 224, gas balancing valve; 225, capillary tube; 220c, first outlet; 220a', second inlet; 220c', second outlet.

[0101] 602, cooling valve; 603, heating valve; 604, third liquid pipe; 605, third gas pipe. DETAILED DESCRIPTION

[0102] The following combination Figures 1 to 21 The technical solution provided by the present invention is described in more detail.

[0103] See also Figure 1 An embodiment of the present invention provides an air conditioning system, comprising a compressor 101, an outdoor heat exchanger 104, an indoor heat exchanger 7, an accumulator 201, a first regulating valve 102, and a second regulating valve 103. The compressor 101 includes an inlet 101a and an outlet 101b. The first regulating valve 102 is located downstream of the compressor 101 and is connected to the outdoor heat exchanger 104, the accumulator 201, and the indoor heat exchanger 7. The second regulating valve 103 is also located downstream of the compressor 101 and is connected to the accumulator 201 and the indoor heat exchanger 7.

[0104] At least one of the first regulating valve 102 and the second regulating valve 103 is in an open state. At least one of the outdoor heat exchanger 104, the indoor heat exchanger 7, and the accumulator 201 is configured as a condenser, and at least one of them is configured as an evaporator. The outdoor heat exchanger 104, the compressor 101, and the associated valves, pipes, and other components are collectively referred to as the outdoor unit 1. The accumulator 201 and its associated valves, pipes, and other components are collectively referred to as the accumulator 2.

[0105] Specifically, the outdoor heat exchanger 104 can be used as a condenser, and the indoor heat exchanger 7 and the accumulator 201 can be used as evaporators; the outdoor heat exchanger 104 can be used as a condenser, and the indoor heat exchanger 7 can be used as an evaporator, and the accumulator 201 can not work; the outdoor heat exchanger 104 can be used as a condenser, and the indoor heat exchanger 7 can not work, and the accumulator 201 can be used as an evaporator.

[0106] Of course, the indoor heat exchanger 7 can also be used as a condenser, and at least one of the outdoor heat exchanger 104 and the accumulator 201 can be used as an evaporator, or both can be used as evaporators. In this mode, the outdoor heat exchanger 104 and the accumulator 201 are each not working and can be used as an evaporator or a condenser.

[0107] Of course, the accumulator 201 can also be used as an evaporator, at least one of the outdoor heat exchanger 104 and the indoor heat exchanger 7 can be used as a condenser, or both can be used as condensers; it is also possible that the accumulator 201 is used as an evaporator, one of the outdoor heat exchanger 104 and the indoor heat exchanger 7 is used as a condenser, and the other does not work.

[0108] Accumulator 201 is filled with energy storage materials, such as ice water, organic phase change materials like paraffin, and inorganic phase change materials like sodium sulfate. Accumulator 201 is equipped with refrigerant pipes, through which the refrigerant flows, exchanging heat with the energy storage materials, storing and releasing both cold and heat.

[0109] When the electricity price is low, the energy storage device 2 is used to store energy; when the electricity price is at its peak, the energy storage device 2 is used to release cold or heat, which can provide energy for the system, reduce the operating frequency of the compressor, reduce power consumption, reduce operating costs, achieve "peak shaving and valley filling" of electricity, and reduce the operating cost of the air conditioner.

[0110] When energy storage device 2 is used for defrosting, it can shoulder the system's evaporation load. Compared to reverse cycle defrosting in non-energy storage air conditioners (i.e., where the indoor heat exchanger 7 acts as the evaporator and the outdoor heat exchanger acts as the condenser), this eliminates the need to absorb heat from the room, helping to maintain indoor comfort. Overall, this multifunctional energy storage air conditioning system can effectively reduce operating costs for a variety of application scenarios.

[0111] Users can generally determine based on real-time electricity prices and power consumption: when electricity prices are at their peak, or when air conditioning and cooling demand is high, low energy consumption and ultra-low energy consumption can be set according to actual conditions.

[0112] From the flow direction of the refrigerant coming out of the compressor 101, by controlling the valve positions of the first regulating valve 102 and the second regulating valve 103, the refrigerant can flow directly to the accumulator 201 after coming out of the compressor 101, or it can first pass through the outdoor heat exchanger 104 and then flow to the accumulator 201, or it can first pass through the indoor heat exchanger 7 and then flow to the accumulator 201, or it can not flow through the accumulator 201.

[0113] It should be noted that the above is only an example and does not mean that the technical solution of this application is limited to the above working mode.

[0114] In the above embodiment, the refrigerant flow direction can be changed by operating the first regulating valve 102 and the second regulating valve 103, thereby changing the refrigerant circulation path of the air conditioning system. Furthermore, the accumulator 201 has a non-operating state, a cold storage state, a cold release state, a heat storage state, and a heat release state. In other words, the accumulator can be in operation or not; when in operation, it can store or release cold; and it can store or release heat.

[0115] It can be seen that the air-conditioning system provided by the above technical solution has many functional modes, which can meet the diverse needs of users to a great extent, enhance the user experience, improve energy utilization efficiency, and promote energy conservation and emission reduction.

[0116] See also Figure 1 In some embodiments, the air conditioning system further includes a first pipeline 3 and a second pipeline 4. One end of the first pipeline 3 is connected to the outlet of the accumulator 201, the inlet of the accumulator 201, and the outdoor heat exchanger 104. The other end of the first pipeline 3 is connected to one end of the indoor heat exchanger 7. One end of the second pipeline 4 is connected to the second regulating valve 103 and the inlet of the accumulator 201. The other end of the second pipeline 4 is connected to the other end of the indoor heat exchanger 7.

[0117] See also Figure 1 In some embodiments, the first regulating valve 102 includes a first valve port D, a second valve port C, a third valve port S, and a fourth valve port E.

[0118] The first valve port D of the first regulating valve 102 is connected to the outlet of the compressor 101. The second valve port C of the first regulating valve 102 is connected to one end of the outdoor heat exchanger 104. The third valve port S of the first regulating valve 102 is connected to both the outlet of the accumulator 201 and the inlet of the compressor 101. The fourth valve port E of the first regulating valve 102 is connected to the third valve port S of the first regulating valve 102 via a first throttle element. The first throttle element is specifically, for example, a capillary tube.

[0119] When the first regulating valve 102 is in the first state, the first valve port D and the second valve port C of the first regulating valve 102 are connected, and the third valve port S and the fourth valve port E of the first regulating valve 102 are connected. The first state is specifically, for example, a power-off state.

[0120] When the first regulating valve 102 is in the second state, the first valve port D of the first regulating valve 102 is connected to the fourth valve port E, and the second valve port C of the first regulating valve 102 is connected to the third valve port S. The second state is specifically, for example, an energized state.

[0121] See also Figure 1 In some embodiments, the second regulating valve 103 includes a first valve port D, a second valve port C, a third valve port S, and a fourth valve port E.

[0122] The first valve port D of the second regulating valve 103 is connected to the outlet of the compressor 101. The second valve port C of the second regulating valve 103 is connected to the third valve port S of the second regulating valve 103 via a second throttle element. The third valve port S of the second regulating valve 103 is connected to the outlet of the accumulator 201, the indoor heat exchanger 7, and the inlet of the compressor 101. The fourth valve port E of the second regulating valve 103 is connected to the second pipeline 4. The second throttle element is, for example, a capillary tube.

[0123] When the second regulating valve 103 is in the first state, the first valve port D and the second valve port C of the second regulating valve 103 are connected, and the third valve port S and the fourth valve port E of the second regulating valve 103 are connected. The first state is specifically, for example, a power-off state.

[0124] When the second regulating valve 103 is in the second state, the first valve port D of the second regulating valve 103 is connected to the fourth valve port E, and the second valve port C of the second regulating valve 103 is connected to the third valve port S. The second state is specifically, for example, an energized state.

[0125] See also Figure 1 and Figure 2 In some embodiments, the air-conditioning system further includes a subcooler 107, and the subcooler 107 includes a first flow channel and a second flow channel. The first flow channel is located between the other end of the first pipeline 3 and the outdoor heat exchanger 104. The second flow channel is connected to the first regulating valve 102, the second regulating valve 103, and the inlet of the compressor 101. The refrigerant in the second flow channel exchanges heat with the refrigerant in the first flow channel. The refrigerant in the first flow channel is the refrigerant in the circulation loop of the air-conditioning system and flows along the circulation loop. The refrigerant in the second flow channel can be selected as the heat exchange medium based on the above-mentioned connection relationship as needed, and the refrigerant in the second flow channel does not need to circulate.

[0126] See also Figure 1 and Figure 2In some embodiments, the air conditioning system further includes a first throttle valve 105 , which is located between the first flow channel of the subcooler 107 and the outdoor heat exchanger 104 .

[0127] The first throttle valve 105 is located between the subcooler 107 and the outdoor heat exchanger 104 and is used to throttle the refrigerant. Specifically, the first throttle valve 105 is, for example, an electronic expansion valve. Regarding the refrigerant flow direction, the refrigerant can flow from the first flow channel of the subcooler 107 to the outdoor heat exchanger 104, or from the outdoor heat exchanger 104 to the first flow channel of the subcooler 107. In both cases, the refrigerant flow can be regulated by adjusting the opening of the first throttle valve 105.

[0128] Continue to see Figure 1 and Figure 2 In some embodiments, the air conditioning system further includes a second throttle valve 106, which is located between the first flow channel and the second flow channel of the subcooler 107. Specifically, the second throttle valve 106 can be, for example, an electronic expansion valve. The first flow channel and the second flow channel of the subcooler 107 are connected via the second throttle valve 106. Under desired operating conditions, a portion of the refrigerant in the first flow channel can be diverted through the second throttle valve 106 to the second flow channel, thereby achieving heat exchange between the first flow channel and the second flow channel of the subcooler 107, thereby realizing the subcooling effect of the subcooler 107.

[0129] Table 1 Working modes of the air conditioning system provided by the embodiment of the present invention

[0130]

[0131] The following table is combined with the attached Figures 2 to 14 Table 1 introduces in detail the working modes of the air-conditioning system provided by the embodiment of the present invention.

[0132] (1) The air conditioning system is in normal cooling mode.

[0133] See also Figure 2 As shown in Table 1, the first regulating valve 102 is de-energized, the second regulating valve 103 is de-energized, the bypass valve 211 is open, the first throttle valve 105 is open, and the fourth throttle valve 206, the cold release valve 207, the high-pressure gas valve 208, the third throttle valve 209, and the heat release valve 210 are all closed. Herein, when a valve is open, fluid can pass through it. When a valve is closed, fluid cannot pass through it. When a valve is in a throttled state, fluid can pass through, but the pressure is regulated.

[0134] In this mode, the refrigerant flow path is as follows: the refrigerant discharged from the outlet of the compressor 101 passes through the first valve port D and the second valve port C of the first regulating valve 102, enters the outdoor heat exchanger 104, and is condensed. After passing through the first throttle valve 105, it enters the subcooler 107, and then enters the indoor heat exchanger 7 through the first pipeline 3. After evaporation in the indoor heat exchanger 7, it returns to the fourth valve port E and the third valve port S of the second regulating valve 103 through the second pipeline 4, then returns to the gas-liquid separator 108, and finally returns to the suction side of the compressor 101.

[0135] In this mode, the accumulator 201 is not used, and only the conventional refrigeration cycle function is realized.

[0136] (2) The air conditioning system is in full cold storage mode.

[0137] See also Figure 3 As shown in Table 1, when the air conditioning system is in full cold storage mode, the first regulating valve 102 and the second regulating valve 103 are both powered off, the first throttle valve 105 and the heat release valve 210 are open, the fourth throttle valve 206 is open, and the cold release valve 207, the high-pressure gas valve 208, the third throttle valve 209, and the bypass valve 211 are closed.

[0138] The refrigerant flows along the following path: Refrigerant discharged from compressor 101 flows through first valve port D and second valve port C of first regulating valve 102, enters outdoor heat exchanger 104 for condensation, then flows through first throttle valve 105 and enters subcooler 107. It then flows along first pipeline 3 and fourth throttle valve 206 to the inlet of accumulator 201. After evaporation, the refrigerant passes through heat release valve 210, along second gas pipe 203, returns to gas-liquid separator 108, and finally returns to the suction side of compressor 101.

[0139] In this mode, the refrigerant does not flow through the indoor heat exchanger 7 , but evaporates in the accumulator 201 , storing the cold energy in the accumulator 201 .

[0140] (3) The air conditioning system is in cold storage and cooling mode.

[0141] See also Figure 4 As shown in Table 1, when the air conditioning system is in the cold storage and cooling mode, the first regulating valve 102 and the second regulating valve 103 are both powered off, and the first throttle valve 105, the heat release valve 210, and the bypass valve 211 are all open. The fourth throttle valve 206 is open. The cold release valve 207, the high-pressure gas valve 208, and the third throttle valve 209 are closed.

[0142] The refrigerant flows as follows: Refrigerant discharged from compressor 101 flows through first regulating valve 102, enters outdoor heat exchanger 104, and is condensed. It then passes through first throttle valve 105 and the first flow path of subcooler 107 before entering first pipeline 3. The refrigerant is then split into two paths within first pipeline 3.

[0143] The liquid flows along the first liquid pipe 204, passes through the fourth throttle valve 206, and enters the inlet of the accumulator 201. After evaporation, it flows out of the outlet of the accumulator 201, passes through the heat release valve 210, and flows into the second gas pipe 203. It then flows back to the gas-liquid separator 108 and finally returns to the suction side of the compressor 101.

[0144] Another refrigerant enters the indoor heat exchanger 7 from the first pipeline 3 , and after evaporating in the indoor heat exchanger 7 , the refrigerant flows into the second pipeline 4 .

[0145] The two refrigerant paths merge at the inlet of the gas-liquid separator 108 and return to the suction side of the compressor 101.

[0146] In this mode, the accumulator 201 and the indoor heat exchanger 7 act as evaporators at the same time, the accumulator 201 stores cold, and the indoor heat exchanger 7 cools.

[0147] (4) The air conditioning system is in supercooling release mode.

[0148] See also Figure 5 As shown in Table 1, the first regulating valve 102 and the second regulating valve 103 are both powered off. The first throttle valve 105, the cold release valve 207 and the third throttle valve 209 are open, and the fourth throttle valve 206, the high pressure gas valve 208, the heat release valve 210 and the bypass valve 211 are closed.

[0149] The refrigerant flows along the following path: Refrigerant discharged from compressor 101 flows through first regulating valve 102, enters outdoor heat exchanger 104, condenses, passes through first throttle valve 105, enters subcooler 107, and then passes through first pipeline 3 and refrigerant release valve 207 to enter the inlet of accumulator 201. After being supercooled in accumulator 201, the refrigerant passes through second liquid pipe 205 and third throttle valve 209 and enters first pipeline 3. It then flows along first pipeline 3 into indoor heat exchanger 7, evaporates there, and then passes through second pipeline 4, fourth valve port E, and third valve port S of second regulating valve 103, returns to gas-liquid separator 108, and returns to the suction side of compressor 101.

[0150] In this mode, the accumulator 201 acts as a supercooler, releasing its stored cold energy to the refrigerant, further increasing its supercooling degree and improving the refrigeration capacity of the refrigerant.

[0151] (5) The air conditioner is in condensing cooling mode.

[0152] See also Figure 6 As shown in Table 1, when the air conditioner is in condensing and cooling mode, the first regulating valve 102 is energized, while the second regulating valve 103 is de-energized. The first throttle valve 105, the fourth throttle valve 206, the cooling valve 207, the heating valve 210, and the bypass valve 211 are closed. The high-pressure gas valve 208 and the third throttle valve 209 are open.

[0153] The refrigerant flows along the following path: the refrigerant discharged from the compressor 101 flows into the inlet of the accumulator 201 through the first gas pipe 202 and the high-pressure gas valve 208, where it is condensed. It then passes through the second liquid pipe 205 and the third throttle valve 209 and enters the first pipeline 3. It then flows along the first pipeline 3 into the indoor heat exchanger 7. After evaporating in the indoor heat exchanger 7, it returns along the second pipeline 4 to the third valve port S and the fourth valve port E of the second regulating valve 103, then flows back to the gas-liquid separator 108, and finally returns to the suction side of the compressor 101.

[0154] In this mode, the outdoor heat exchanger 104 is not used, and instead the accumulator 201 is used as a condenser to provide cooling for the refrigeration cycle. Because the temperature of the cold storage material in the accumulator 201 is much lower than the outdoor ambient temperature, the refrigeration cycle can operate at a low pressure ratio, significantly reducing the load on the compressor 101.

[0155] (6) The air conditioner is in parallel cooling mode.

[0156] See also Figure 7 As shown in Table 1, when the air conditioner is in parallel cooling mode, the first regulating valve 102 and the second regulating valve 103 are both powered off. The fourth throttle valve 206, the cooling valve 207, and the heating valve 210 are closed. The first throttle valve 105, the high-pressure gas valve 208, the third throttle valve 209, and the bypass valve 211 are open.

[0157] The refrigerant flows along the following paths. The refrigerant discharged from the compressor 101 is divided into two paths:

[0158] The first path, the first refrigerant discharged from the compressor 101, flows along the first air pipe 202, passes through the high-pressure air valve 208, and then flows into the inlet of the accumulator 201. After the refrigerant condenses in the accumulator 201, it flows out from the outlet of the accumulator 201, and then passes through the second liquid pipe 205 and the third throttle valve 209 into the first pipeline 3, and then enters the indoor heat exchanger 7.

[0159] The second refrigerant discharged from compressor 101 passes through first valve port D and second valve port C of first regulating valve 102, enters outdoor heat exchanger 104 for condensation, then passes through first throttle valve 105 and enters subcooler 107. It then enters first pipeline 3 and merges with the refrigerant from the first route that has entered first pipeline 3 before entering indoor heat exchanger 7 for evaporation. After evaporation in indoor heat exchanger 7, the refrigerant passes through second pipeline 4, returns to fourth valve port E and third valve port S of second regulating valve 103, then returns to gas-liquid separator 108, and finally returns to the suction side of compressor 101.

[0160] In this mode, the outdoor heat exchanger 104 and the accumulator 201 both act as condensers, providing cooling capacity for the refrigeration cycle and improving the condensing capacity.

[0161] (7) The air conditioner is in normal heating mode.

[0162] See also Figure 8 As shown in Table 1, when the air conditioner is in normal heating mode, the first regulating valve 102 and the second regulating valve 103 are both energized. The bypass valve 211 is open, the first throttle valve 105 is open, and the fourth throttle valve 206, the cold release valve 207, the high-pressure gas valve 208, the third throttle valve 209, and the heat release valve 210 are closed.

[0163] The refrigerant flow path is as follows: the refrigerant discharged from the compressor 101 enters the second pipeline 4 through the first valve port D and the fourth valve port E of the second regulating valve 103, and flows into the indoor heat exchanger 7 for condensation. After condensation in the indoor heat exchanger 7, the refrigerant returns to the first pipeline 3. Through the first pipeline 3, it flows into the subcooler 107, and after being throttled by the first throttle valve 105, it flows into the outdoor heat exchanger 104 for evaporation. The evaporated refrigerant enters the gas-liquid separator 108 through the second valve port C and the third valve port S of the first regulating valve 102, and finally returns to the suction side of the compressor 101.

[0164] In this mode, the accumulator is not used and it is a normal heating cycle.

[0165] (8) The air conditioner is in full heat storage mode.

[0166] See also Figure 9 As shown in Table 1, when the air conditioner is in full heat storage mode, the first regulating valve 102 is energized, and the second regulating valve 103 is de-energized. The high-pressure gas valve 208, the third throttle valve 209, and the bypass valve 211 are open, and the first throttle valve 105 is open. The fourth throttle valve 206, the cold release valve 207, and the heat release valve 210 are closed.

[0167] The refrigerant flows along the following path: the refrigerant discharged from the compressor 101 flows into the accumulator 201 through the first gas pipe 202 and the high-pressure gas valve 208 for condensation, then flows out of the outlet of the accumulator 201, then flows along the second liquid pipe 205 and the third throttle valve 209 into the first pipeline 3, flows through the bypass valve 211 into the subcooler 107, and then is throttled by the first throttle valve 105 before flowing into the indoor heat exchanger 7. After evaporation in the outdoor heat exchanger 104, the refrigerant passes through the second valve port C and the third valve port S of the first regulating valve 102, enters the gas-liquid separator 108, and finally returns to the suction side of the compressor 101.

[0168] In this mode, the refrigerant condenses in the accumulator 201 , stores heat in the accumulator 201 , and evaporates in the outdoor heat exchanger 104 .

[0169] (9) The air conditioner is in heat storage and heating mode.

[0170] See also Figure 10As shown in Table 1, the first regulating valve 102 and the second regulating valve 103 are both energized, the high-pressure gas valve 208, the third throttle valve 209 and the bypass valve 211 are open, and the first throttle valve 105 is open. The fourth throttle valve 206, the cold release valve 207 and the heat release valve 210 are closed.

[0171] The refrigerant discharged from the compressor 101 is divided into two paths, and the refrigerant flows according to the following paths.

[0172] The first refrigerant discharged from the compressor 101 flows into the accumulator 201 through the first gas pipe 202 and the high-pressure gas valve 208 for condensation, flows out from the outlet of the accumulator 201, and then enters the first pipeline 3 through the second liquid pipe 205 and the third throttle valve 209.

[0173] The second refrigerant discharged from compressor 101 enters indoor heat exchanger 7 through first port D and fourth port E of second regulating valve 103. After condensation, it returns to first pipeline 3, where it merges with the first refrigerant described in the previous paragraph. It then flows through bypass valve 211 into subcooler 107, is throttled by first throttle valve 105, evaporates in outdoor heat exchanger 104, and then flows through second port C and third port S of first regulating valve 102, back to gas-liquid separator 108, and finally returns to the suction side of compressor 101.

[0174] In this mode, the accumulator 201 and the indoor heat exchanger 7 act as condensers simultaneously, storing heat while performing heating, while the outdoor heat exchanger 104 acts as an evaporator.

[0175] (10) The air conditioner is in mixed heat release mode.

[0176] See also Figure 11 As shown in Table 1, when the air conditioning system is in mixed heat release mode, the first regulating valve 102 and the second regulating valve 103 are both energized. The heat release valve 210 and the bypass valve 211 are open, and the first throttle valve 105 and the fourth throttle valve 206 are both open. The cold release valve 207, the high-pressure gas valve 208, and the third throttle valve 209 are all closed.

[0177] The refrigerant flows as follows: The refrigerant discharged from compressor 101 passes through the first and fourth ports of second regulating valve 103, enters second pipeline 4, and then flows into indoor heat exchanger 7 for condensation. The condensed refrigerant returns to first pipeline 3 and is diverted after passing through bypass valve 211.

[0178] It passes through the first liquid pipe 204, is throttled by the fourth throttle valve 206, and then enters the accumulator 201 for evaporation. It then flows out of the outlet of the accumulator 201, flows into the second gas pipe 203, passes through the heat release valve 210, returns to the gas-liquid separator 108, and finally returns to the suction side of the compressor 101.

[0179] The other route passes through the first pipeline 3, passes through the subcooler 107, is throttled in the first throttle valve 105, then flows into the outdoor heat exchanger 104 to evaporate, and then passes through the second valve port C and the third valve port S of the first throttling element 102, returns to the gas-liquid separator 108, and finally returns to the suction side of the compressor 101.

[0180] It can be seen from the above process that the two refrigerants mentioned above merge at the inlet section of the gas-liquid separator 108 and finally return to the suction side of the compressor 101.

[0181] In the above mode, the accumulator 201 bears part of the evaporation load and increases the suction pressure.

[0182] (11) The air conditioning system is in independent heat release mode.

[0183] See also Figure 12 As shown in Table 1, when the air conditioning system is in independent heat release mode, the first regulating valve 102 and the second regulating valve 103 are both energized. The heat release valve 210 and the bypass valve 211 are open, the fourth throttle valve 206 is open, and the first throttle valve 105, the cold release valve 207, the high-pressure gas valve 208, and the third throttle valve 209 are all closed.

[0184] The refrigerant flows along the following path: Refrigerant discharged from compressor 101 passes through the first and fourth ports of second regulating valve 103, enters second pipeline 4, and then flows into indoor heat exchanger 7 for condensation. The condensed refrigerant returns to first pipeline 3, flows through first liquid pipe 204, enters fourth throttle valve 206 for throttling, and then enters accumulator 201 for evaporation. It then flows out of the outlet of accumulator 201, passes through second liquid pipe 205, and release valve 210, enters second gas pipe 203, flows into gas-liquid separator 108, and finally returns to the suction side of compressor 101.

[0185] In this mode, the accumulator 201 bears the entire evaporation load.

[0186] (12) The air conditioner is in non-continuous heating and defrosting mode.

[0187] See also Figure 13 As shown in Table 1, when the air conditioner is in discontinuous heating and defrosting mode, the first regulating valve 102 is powered off, the second regulating valve 103 is powered off, the cold release valve 207, the high-pressure gas valve 208, the third throttle valve 209, and the bypass valve 211 are all closed, the fourth throttle valve 206 is opened, and the first throttle valve 105 and the heat release valve 210 are opened.

[0188] The refrigerant flows along the following path: the refrigerant discharged from the compressor 101 flows through the first regulating valve 102, enters the outdoor heat exchanger 104 for condensation, then passes through the first throttle valve 105, enters the subcooler 107, and then enters the first pipeline 3. It then flows through the fourth throttle valve 206 for throttling, enters the accumulator 201, evaporates in the accumulator 201, flows out of the outlet of the accumulator 201, then flows along the second liquid pipe 205, passes through the heat release valve 210, and the second gas pipe 203, returns to the gas-liquid separator 108, and finally returns to the suction side of the compressor 101.

[0189] In this mode, the refrigerant does not evaporate in the indoor heat exchanger 7 but evaporates in the accumulator 201 , and the stored heat is used to defrost the outdoor heat exchanger 104 .

[0190] (13) The air conditioner is in continuous heating and defrosting mode.

[0191] See also Figure 14 As shown in Table 1, when the air conditioner is in continuous heating and defrosting mode, the first regulating valve 102 is powered off, and the second regulating valve 103 is powered on. The cold release valve 207, high-pressure gas valve 208, and third throttle valve 209 are all closed, the fourth throttle valve 206 is open, and the first throttle valve 105, heat release valve 210, and bypass valve 211 are open.

[0192] The refrigerant discharged from the compressor 101 is split, and its specific flow path is as follows:

[0193] The first refrigerant discharged from the compressor 101 enters the second pipeline 4 through the second regulating valve 103 and then enters the indoor heat exchanger 7 for condensation. The condensed refrigerant flows into the first pipeline 3.

[0194] The second refrigerant discharged from the compressor 101 flows through the first regulating valve 102 and enters the outdoor heat exchanger 104 for condensation, and then passes through the first throttle valve 105 and the subcooler 107 and enters the first pipeline 3.

[0195] The first and second refrigerants merge in first pipeline 3, pass through bypass valve 211, enter first liquid pipe 204, are throttled by fourth throttle valve 206, and enter accumulator 201. After evaporation, the refrigerant flows out of the outlet of accumulator 201, passes through second liquid pipe 205, heat release valve 210, second gas pipe 203, and gas-liquid separator 108, and returns to the suction side of compressor 101.

[0196] In this mode, the refrigerant is condensed in both the indoor heat exchanger 7 and the outdoor heat exchanger 104 and evaporated in the accumulator 201, thereby heating the room and defrosting the room at the same time.

[0197] The air conditioning system provided by the above technical solution, through the switching of pipelines and valves, can enable the heat pump air conditioning system to achieve 13 functions, including complete cold storage, cold storage with complete cooling, and cold storage with main cooling. This broadens the application range of the energy storage system and improves its availability. Furthermore, the air conditioning system provided by the embodiment of the present invention can also simultaneously heat the room during defrosting, that is, it can provide continuous heating. Furthermore, by releasing pre-stored heat during the heating process, the indoor heat exchanger 7 continues to heat during defrosting, preventing users from noticing a drop in temperature or a decrease in heating performance. Consequently, continuous defrosting provides better performance and greater user comfort.

[0198] An embodiment of the present invention also provides an air conditioning control method, where the air conditioning is an air conditioning system provided by any technical solution of the present invention, and the control method includes: determining the working mode of the air conditioning system; and controlling the states of the outdoor heat exchanger 104, the indoor heat exchanger 7, the accumulator 201, the first regulating valve 102, and the second regulating valve 103 in the air conditioning system according to a preset control strategy corresponding to the working mode.

[0199] In some embodiments, the air conditioning system may determine the operating mode of the air conditioning system according to the current needs of the user, or may automatically determine the operating mode of the air conditioning system according to a pre-stored charging standard of the power supply system.

[0200] In some embodiments, determining the operating mode of the air conditioning system includes: during a period when the power supply system has a first electricity price, determining that the energy accumulator 201 is in one of the following states: a non-operating state, a cooling state, or a heating state; and during a period when the power supply system has a second electricity price, determining that the operating mode of the air conditioning system is a mode corresponding to the energy accumulator 201 being in the non-operating state, the cooling state, or the heating state. Specifically, the first electricity price is, for example, a high price in a tiered electricity rate calculation strategy. The second electricity price is, for example, a low price in a tiered electricity rate calculation strategy.

[0201] The air conditioning system provided by the above technical solution stores energy during off-peak electricity price periods and releases energy during peak electricity price periods, thereby reducing the power consumption of the air conditioner during these periods. This achieves "peak shaving" of electricity and reduces the operating costs of the air conditioning system.

[0202] In some embodiments, determining the operating mode of the air conditioning system based on the detection results includes: (1) when it is detected that there is no energy in the accumulator 201, determining the operating mode of the air conditioning system to a mode corresponding to the accumulator 201 being in a non-operating state, a heat storage state, or a cold storage state. (2) when it is detected that there is energy in the accumulator 201, the operating mode of the air conditioning system can be determined as a mode corresponding to the accumulator 201 being in a non-operating state, a heat storage state, a cold storage state, a heat release state, or a cold release state according to demand. When using the energy in the accumulator 201, the energy remaining in the accumulator 201 is detected in real time. When it is detected that the energy remaining is close to zero, the energy in the accumulator 201 is stopped from being used.

[0203] To save electricity resources, many cities have adopted a time-of-use electricity pricing policy. For example, during peak electricity consumption periods, electricity prices are higher, so as to raise people's awareness of saving electricity through increased costs; during low electricity consumption periods, electricity prices are lower, guiding people to use electricity resources in off-peak hours and avoid putting greater pressure on the power supply system.

[0204] During a period when the power supply system has a first electricity price, determining the operating mode of the air-conditioning system to be a mode in which the energy accumulator 201 is in a non-operating state, a cooling state, or a heating state;

[0205] During the period when the power supply system has the second electricity price, the operating mode of the air-conditioning system is determined to be a mode in which the energy accumulator 201 is in a non-operating state, a cold storage state, or a heat storage state.

[0206] By determining the working mode of the air-conditioning system according to the electricity price of the power supply system, cold or heat can be stored through the accumulator 201 during the second electricity price period, and the air-conditioning system is set to a mode corresponding to the accumulator 201 being in a non-working state, a cold release state, or a heat release state during the first electricity price period, thereby utilizing the heat or cold stored in advance by the accumulator 201 to mainly or auxiliaryly achieve the purpose of cooling or heating, reduce the working frequency of the compressor 101, reduce the power consumption of the air-conditioning system during the first electricity price period, and reduce the economic pressure on users; it is also conducive to achieving peak power consumption and reducing the power supply pressure of the power supply system.

[0207] The air conditioning system provided by the embodiments of the present invention can implement 13 modes: conventional refrigeration cycle, conventional heating cycle, full cold storage, full heat storage, cold storage and cooling, heating and heat storage, cold release and supercooling, mixed heat release, cold release and condensation, independent heat release, parallel cold release, discontinuous heating and defrosting, and continuous heating and defrosting. This meets the diverse needs of users while broadening the scope of use of the air conditioning system and significantly improving its availability. Furthermore, the air conditioning system designed by the present invention features streamlined piping, lower costs, and can provide energy storage and release services for a variety of power load transfer scenarios.

[0208] See also Figure 15 Another embodiment of the present invention provides an air conditioning system. This system differs from the aforementioned embodiments in that the connection location of the first air pipe 202 is slightly different. In this embodiment, one end of the first air pipe 202 is directly connected to the outlet 101b of the compressor 101. This connection does not change the functionality of the air conditioning system or the valve control method. The system still implements the 37 functions described above.

[0209] In other embodiments, the other end of the second pipeline 4 is also connected to the inlet of the accumulator 201 .

[0210] The end of the original first air pipe 202 connected to the outlet 101b of the compressor 101 is now connected to the second pipe 4. In the original solution, during cooling, the first air pipe 202 was used only for condensation and parallel cooling. However, in this embodiment, condensation and parallel cooling modes are not used, and only four functions are implemented: conventional cooling, complete cold storage, cold storage and cooling, and supercooling. The flow path and valve opening and closing are consistent with the technical solutions described in the above embodiment.

[0211] During heating, complete heat storage, and simultaneous heat storage and heating, the high-temperature and high-pressure gaseous refrigerant still enters the accumulator through the first gas pipe 202, and the opening and closing of each valve and the refrigerant flow path are consistent with the original solution.

[0212] See also Figures 16 to 18 Another embodiment of the present invention further provides an air-conditioning system, which is different from the various embodiments described above in that an energy storage tank is provided in this embodiment.

[0213] A liquid storage tank 220 is added on the basis of the energy storage system. The liquid storage tank stores and releases the refrigerant, and controls the amount of refrigerant in different operating modes, so that the amount of refrigerant circulating in the system is consistent with the refrigerant demand in different operating modes, thereby achieving the best heat exchange effect.

[0214] The liquid storage tank 220 includes a first inlet 220a, a port 220b, and a first outlet 220c. The first inlet 220a is connected to the first pipeline 3 via a liquid inlet valve 221. The port 220b is connected to the first air pipe 202 via a pressurizing valve 222 and to the second air pipe 203 via a capillary tube 225 and a gas balance valve 224. The first outlet 220c is connected to the second air pipe 203 via a capillary tube 225 and a liquid drain valve 223.

[0215] Figure 17 The flow path of the refrigerant stored in the liquid storage tank 220 is shown. Figure 18 The flow path for releasing the refrigerant from the liquid storage tank 220 is shown.

[0216] The liquid storage tank 220 has three states: not working, storing refrigerant and releasing refrigerant. These three states can be used in different system modes (conventional refrigeration, full cold storage, etc.).

[0217] The first working mode: when the liquid storage tank 220 is not working, the liquid inlet valve 221, the pressurizing valve 222, the liquid discharge valve 223, and the gas balance valve 224 are all closed.

[0218] Second, when it is determined that the current operating mode requires refrigerant storage, the liquid inlet valve 221 and the gas balancing valve 224 are opened, and the pressurizing valve 222 and the liquid discharge valve 223 are closed. The gas balancing valve 224 is opened, causing the pressure in the liquid storage tank 220 to be at a low pressure. The liquid inlet valve 221 is opened, causing the refrigerant inlet pipe of the liquid storage tank 220 to be at a medium pressure. The refrigerant enters the refrigerant tank 220 under the action of the pressure difference.

[0219] In the third scenario, when it is determined that the current operating mode requires the refrigerant tank to be activated to release refrigerant, the liquid inlet valve 221 and the gas balance valve 224 are closed, and the pressurizing valve 222 and the drain valve 223 are opened. The drain valve 223 is opened, placing the outlet of the liquid storage tank 220 at a low pressure, while the pressurizing valve 222 is opened, placing the pressure in the liquid storage tank 220 at a high pressure. The refrigerant inside the tank is discharged from the tank under the action of gravity and the pressure difference, entering the pipeline circulation.

[0220] See also Figures 19 to 21 This embodiment provides another type of liquid storage tank with only two interfaces: a second inlet 220a' and a second outlet 220c'. The second inlet 220a' is connected to the first pipeline 3 via a gas balance valve 224, and the second outlet 220c' is connected to the second gas pipe 203 via a drain valve 223 and a capillary tube 225.

[0221] Figure 20 The flow path of the refrigerant stored in the liquid storage tank 220 is shown. Figure 21 The flow path for releasing the refrigerant from the liquid storage tank 220 is shown.

[0222] The liquid storage tank 220 has three states: not working, storing refrigerant and releasing refrigerant. These three states can be used in different system modes (conventional refrigeration, full cold storage, etc.).

[0223] First, when the liquid storage tank 220 is not working, the drain valve 223 and the gas balance valve 224 are both closed.

[0224] Second, when it is determined that the current operating mode requires the start of refrigerant storage, the drain valve 223 and the gas balance valve 224 are both opened, and the refrigerant enters the refrigerant tank 220 under the action of the pressure difference.

[0225] The third type is that when it is determined that the current operating mode requires the refrigerant tank to be started to release the refrigerant, the gas balance valve 224 is closed and the drain valve 223 is opened. The refrigerant inside the tank is discharged from the tank under the action of gravity and pressure difference and enters the pipeline circulation.

[0226] An embodiment of the present invention further provides a control device for an air conditioning system, comprising a memory and a processor. The memory is configured to store instructions. The processor is coupled to the memory and configured to execute, based on the instructions stored in the memory, a control method according to any embodiment of the present invention.

[0227] Other embodiments of the present invention provide a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the control method provided by any embodiment of the present invention is implemented.

[0228] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the protection content of the present invention.

[0229] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An air conditioning system, characterized in that: include: A compressor (101) including an inlet and an outlet; outdoor heat exchanger (104); Indoor heat exchanger (7); accumulator (201); a first regulating valve (102) located downstream of the compressor (101), and the first regulating valve (102) is connected to the inlet of the compressor (101), the outlet of the compressor (101), the outdoor heat exchanger (104), and the accumulator (201); and A second regulating valve (103) is also located downstream of the compressor (101), and the second regulating valve (103) is connected to the inlet of the compressor (101), the outlet of the compressor (101), the accumulator (201), and the indoor heat exchanger (7); The first regulating valve (102) and the second regulating valve (103) are configured to adjust their own ranges so that at least one of the outdoor heat exchanger (104), the indoor heat exchanger (7), and the accumulator (201) is configured as a condenser, and at least another one of them is configured as an evaporator; Wherein, the air conditioning system further includes: A first pipeline (3) has one end connected to the outlet of the accumulator (201), the inlet of the accumulator (201), and the outdoor heat exchanger (104); and the other end connected to one end of the indoor heat exchanger (7); and The second pipeline (4) has one end connected to the second regulating valve (103) and the other end connected to the other end of the indoor heat exchanger (7).

2. The air conditioning system according to claim 1, characterized in that The other end of the second pipeline (4) is also connected to the inlet of the accumulator (201).

3. The air conditioning system according to claim 1, characterized in that The first regulating valve (102) includes a first valve port, a second valve port, a third valve port, and a fourth valve port; The first valve port of the first regulating valve (102) is connected to the outlet of the compressor (101); the second valve port of the first regulating valve (102) is connected to one end of the outdoor heat exchanger (104); the third valve port of the first regulating valve (102) is connected to the outlet of the accumulator (201) and the inlet of the compressor (101); the fourth valve port of the first regulating valve (102) is connected to the third valve port of the first regulating valve (102) through a first throttle element; Wherein, when the first regulating valve (102) is in the first state, the first valve port and the second valve port of the first regulating valve (102) are connected, and the third valve port and the fourth valve port of the first regulating valve (102) are connected; When the first regulating valve (102) is in the second state, the first valve port and the fourth valve port of the first regulating valve (102) are connected, and the second valve port and the third valve port of the first regulating valve (102) are connected.

4. The air conditioning system according to claim 1, characterized in that The second regulating valve (103) comprises a first valve port, a second valve port, a third valve port and a fourth valve port; The first valve port of the second regulating valve (103) is connected to the outlet of the compressor (101); the second valve port of the second regulating valve (103) is connected to the third valve port of the second regulating valve (103) through a second throttle member; the third valve port of the second regulating valve (103) is connected to the outlet of the accumulator (201), the indoor heat exchanger (7), and the inlet of the compressor (101); the fourth valve port of the second regulating valve (103) is connected to the second pipeline (4); When the second regulating valve (103) is in the first state, the first valve port and the second valve port of the second regulating valve (103) are connected, and the third valve port and the fourth valve port of the second regulating valve (103) are connected; When the second regulating valve (103) is in the second state, the first valve port and the fourth valve port of the second regulating valve (103) are connected, and the second valve port and the third valve port of the second regulating valve (103) are connected.

5. The air conditioning system according to claim 1, characterized in that Also includes: The subcooler (107) includes a first flow channel and a second flow channel; the first flow channel is located between the other end of the first pipeline (3) and the outdoor heat exchanger (104); the second flow channel is connected to the first regulating valve (102), the second regulating valve (103), and the inlet of the compressor (101).

6. The air conditioning system according to claim 5, characterized in that Also includes: The first throttle valve (105) is located between the first flow channel of the subcooler (107) and the outdoor heat exchanger (104).

7. The air conditioning system according to claim 5, characterized in that Also includes: The second throttle valve (106) is located between the first flow channel and the second flow channel of the subcooler (107).

8. The air conditioning system according to claim 1, characterized in that Also includes: A bypass valve (211) is arranged on the first pipeline (3); wherein the bypass valve (211) is provided between the connection between the inlet of the accumulator (201) and the first pipeline (3), and between the connection between the outlet of the accumulator (201) and the first pipeline (3).

9. The air conditioning system according to claim 1, characterized in that Also includes: A third throttle valve (209), the outlet of the accumulator (201) is connected to the first pipeline (3) through the third throttle valve (209).

10. The air conditioning system according to claim 1, wherein: Also includes: A first connecting branch (204') connecting the inlet of the accumulator (201) and the first pipeline (3); A second connecting branch (204") is arranged in parallel with the first connecting branch (204') and also connects the inlet of the accumulator (201) and the first pipeline (3); a fourth throttle valve (206), arranged on the first connecting branch (204'); as well as The cold release valve (207) is arranged on the second connecting branch (204").

11. The air conditioning system according to claim 1, wherein: Also includes: A first air pipe (202) is connected to the inlet of the accumulator (201) and the second pipeline (4); or, is connected to the inlet of the accumulator (201) and the outlet of the compressor (101); as well as A high-pressure gas valve (208) is arranged on the first gas pipe (202).

12. The air conditioning system according to claim 1, wherein: Also includes: A second air pipe (203); the outlet of the accumulator (201) is connected to the inlet of the compressor (101) through the second air pipe (203); The heat release valve (210) is arranged on the second air pipe (203).

13. The air conditioning system according to claim 12, characterized in that Also includes: A liquid storage tank (220) comprising a first inlet (220a), an interface (220b), and a first outlet (220c); The first inlet (220a) is connected to the first pipeline (3) through a liquid inlet valve (221); the interface (220b) is connected to the first air pipe (202) through a pressurizing valve (222) and is connected to the second air pipe (203) through a capillary tube (225) and a gas balance valve (224); and the first outlet (220c) is connected to the second air pipe (203) through a capillary tube (225) and a liquid discharge valve (223).

14. The air conditioning system according to claim 13, wherein: Also includes: A liquid storage tank (220) including a second inlet (220a') and a second outlet (220c'); The second inlet (220a') is connected to the first pipeline (3) through a gas balance valve (224); the second outlet (220c') is connected to the second gas pipe (203) through a drain valve (223) and a capillary tube (225).

15. An air conditioning control method, characterized in that: The air conditioner is the air conditioning system according to any one of claims 1 to 14, and the control method includes: determining an operating mode of the air conditioning system; The states of the outdoor heat exchanger (104), the indoor heat exchanger (7), the accumulator (201), the first regulating valve (102), and the second regulating valve (103) in the air-conditioning system are controlled according to a preset control strategy corresponding to the working mode.

16. The air conditioning control method according to claim 15, characterized in that: Determining the operating mode of the air conditioning system includes: During a period when the power supply system has a first electricity price, the energy accumulator (201) is determined to be in one of the following states: a non-operating state, a cold-releasing state, or a heat-releasing state; and during a period when the power supply system has a second electricity price, the operating mode of the air-conditioning system is determined to be a mode corresponding to the energy accumulator (201) being in a non-operating state, a cold-storing state, or a heat-storing state.

17. The air conditioning control method according to claim 15, characterized in that: The working mode of the air-conditioning system includes a conventional cooling mode; in the conventional cooling mode, the first regulating valve (102) and the second regulating valve (103) are both powered off, and the accumulator (201) is in a non-working state; the outdoor heat exchanger (104) is used as a condenser, and the indoor heat exchanger (7) is used as an evaporator.

18. The air conditioning control method according to claim 15, characterized in that: The working mode of the air-conditioning system includes a full cold storage mode; in the full cold storage mode, the first regulating valve (102) and the second regulating valve (103) are both powered off, the indoor heat exchanger (7) is not working, the outdoor heat exchanger (104) is used as a condenser, and the accumulator (201) is used as an evaporator.

19. The air conditioning control method according to claim 15, wherein: The working mode of the air-conditioning system includes a cold storage and cooling mode; in the cold storage and cooling mode, the first regulating valve (102) and the second regulating valve (103) are both powered off, the outdoor heat exchanger (104) is used as a condenser, the accumulator (201) is used as an evaporator, and the indoor heat exchanger (7) is also used as an evaporator.

20. The air conditioning control method according to claim 15, characterized in that: The working mode of the air-conditioning system includes a supercooling release mode; in the supercooling release mode, the first regulating valve (102) and the second regulating valve (103) are both powered off, the outdoor heat exchanger (104) is used as a condenser, the accumulator (201) is used as a supercooler, and the indoor heat exchanger (7) is also used as an evaporator.

21. The air conditioning control method according to claim 15, wherein: The working mode of the air-conditioning system includes a condensing cooling mode; in the condensing cooling mode, the first regulating valve (102) is energized, the second regulating valve (103) is de-energized, the outdoor heat exchanger (104) is not working, the accumulator (201) is used as a condenser, and the indoor heat exchanger (7) is also used as an evaporator.

22. The air conditioning control method according to claim 15, characterized in that: The working mode of the air-conditioning system includes a parallel cooling mode; in the parallel cooling mode, the first regulating valve (102) and the second regulating valve (103) are both powered off, the outdoor heat exchanger (104) is used as a condenser, the accumulator (201) is used as a condenser, and the indoor heat exchanger (7) is used as an evaporator.

23. The air conditioning control method according to claim 15, characterized in that: The working mode of the air-conditioning system includes a conventional heating mode; in the conventional heating mode, the first regulating valve (102) and the second regulating valve (103) are both energized, the outdoor heat exchanger (104) is used as an evaporator, the accumulator (201) is not working, and the indoor heat exchanger (7) is used as a condenser.

24. The air conditioning control method according to claim 15, characterized in that: The working mode of the air-conditioning system includes a full heat storage mode; in the full heat storage mode, the first regulating valve (102) is energized, the second regulating valve (103) is de-energized, the outdoor heat exchanger (104) is used as an evaporator, the accumulator (201) is used as a condenser, and the indoor heat exchanger (7) is not working.

25. The air conditioning control method according to claim 15, characterized in that: The working mode of the air-conditioning system includes a heat storage and heating mode; in the heat storage and heating mode, the first regulating valve (102) and the second regulating valve (103) are both energized, the outdoor heat exchanger (104) is used as an evaporator, the accumulator (201) is used as a condenser, and the indoor heat exchanger (7) is used as a condenser.

26. The air conditioning control method according to claim 15, characterized in that: The working mode of the air-conditioning system includes a mixed heat release mode; in the mixed heat release mode, the first regulating valve (102) and the second regulating valve (103) are both energized, the outdoor heat exchanger (104) is used as an evaporator, the accumulator (201) is used as an evaporator, and the indoor heat exchanger (7) is used as a condenser.

27. The air conditioning control method according to claim 15, characterized in that: The working mode of the air-conditioning system includes an independent heat release mode; in the independent heat release mode, the first regulating valve (102) and the second regulating valve (103) are both energized, the outdoor heat exchanger (104) is not working, the accumulator (201) is used as an evaporator, and the indoor heat exchanger (7) is used as a condenser.

28. The air conditioning control method according to claim 15, characterized in that: The working mode of the air-conditioning system includes a discontinuous heating and defrosting mode; in the discontinuous heating and defrosting mode, the first regulating valve (102) and the second regulating valve (103) are both powered off, the outdoor heat exchanger (104) is used as a condenser, the accumulator (201) is used as an evaporator, and the indoor heat exchanger (7) is not working.

29. The air conditioning control method according to claim 15, characterized in that: The working mode of the air-conditioning system includes a continuous heating and defrosting mode; in the continuous heating and defrosting mode, the first regulating valve (102) is powered off, the second regulating valve (103) is powered on, the outdoor heat exchanger (104) is used as a condenser, the accumulator (201) is used as an evaporator, and the indoor heat exchanger (7) is used as a condenser.

30. A control device for an air conditioning system, comprising: a memory configured to store instructions; A processor is coupled to the memory, and the processor is configured to execute the control method according to any one of claims 15 to 29 based on instructions stored in the memory.

31. A computer-readable storage medium, wherein: The computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the control method according to any one of claims 15 to 29 is implemented.

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