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, at least two indoor heat exchangers, 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, the accumulator, and the indoor heat exchanger. 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 valve positions so that at least one of the outdoor heat exchanger, the at least two indoor heat exchangers, 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] Energy storage air conditioning unit is an air conditioner that can store energy. It can meet users' needs for cold and hot energy by using the stored energy.

[0003] In the prior art, achieving the energy storage function of air conditioning units requires the design of complex piping structures. This overly complex piping in air conditioning systems leads to complex manufacturing processes, high costs, and significant control difficulties. Furthermore, the single function of the energy storage components fails to meet diverse user needs, and the complex piping design creates a negative user experience. Summary of the Invention

[0004] The present invention provides an air-conditioning system, a control method, a control device and a computer-readable storage medium, which are used to alleviate the problem of complex pipelines.

[0005] An embodiment of the present invention provides an air conditioning system, comprising:

[0006] compressor, including inlet and outlet;

[0007] outdoor heat exchanger;

[0008] At least two indoor heat exchangers;

[0009] accumulator;

[0010] a first regulating valve located downstream of the compressor, and connected to the compressor, the outdoor heat exchanger, the accumulator, and the indoor heat exchanger; and

[0011] a second regulating valve, also located downstream of the compressor, and connected to the compressor, the accumulator, and the indoor heat exchanger;

[0012] The first regulating valve and the second regulating valve are configured to adjust their valve positions so that at least one of the outdoor heat exchanger, the at least two indoor heat exchangers, and the accumulator is configured as a condenser, and at least another one of them is configured as an evaporator.

[0013] In some embodiments, the indoor heat exchangers are arranged in parallel; and the air conditioning system further comprises:

[0014] 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 each of the indoor heat exchangers;

[0015] A second pipeline, one end of which is connected to the second regulating valve and the inlet of the accumulator, and the other end of which is connected to the other end of each of the indoor heat exchangers; and

[0016] The third pipeline has one end connected to the outlet of the accumulator and the inlet of the compressor, and the other end connected to the other end of each of the indoor heat exchangers.

[0017] 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;

[0018] 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;

[0019] 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 in communication, and the third valve port and the fourth valve port of the first regulating valve are in communication;

[0020] 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 in communication, and the second valve port and the third valve port of the first regulating valve are in communication.

[0021] 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;

[0022] 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 indoor heat exchanger and the inlet of the accumulator;

[0023] 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;

[0024] 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 in communication, and the second valve port and the third valve port of the second regulating assembly are in communication.

[0025] In some embodiments, the air conditioning system further comprises:

[0026] 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.

[0027] In some embodiments, the air conditioning system further comprises:

[0028] The first throttle valve is located between the first flow channel of the subcooler and the outdoor heat exchanger.

[0029] In some embodiments, the air conditioning system further comprises:

[0030] A second throttle valve is located between the first flow channel and the second flow channel of the subcooler.

[0031] In some embodiments, the air conditioning system further comprises:

[0032] 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.

[0033] In some embodiments, the air conditioning system further comprises:

[0034] A third throttle valve, the outlet of the accumulator is connected to the first pipeline through the third throttle valve.

[0035] In some embodiments, the air conditioning system further comprises:

[0036] A heat release valve is provided, wherein the outlet of the accumulator is connected to the third pipeline via the heat release valve.

[0037] In some embodiments, the air conditioning system further comprises:

[0038] a first connecting branch connecting the inlet of the accumulator and the first pipeline;

[0039] a second communication branch, arranged in parallel with the first communication branch and also connecting the inlet of the accumulator and the first pipeline;

[0040] a fourth throttle valve, arranged in the first communication branch; and

[0041] The cold release valve is arranged on the second connecting branch.

[0042] In some embodiments, the air conditioning system further comprises:

[0043] 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

[0044] The high-pressure gas valve is arranged on the first gas pipe.

[0045] In some embodiments, the air conditioning system further comprises:

[0046] a storage container comprising a first inlet, a port, and a first outlet;

[0047] Liquid inlet valve;

[0048] Pressurizing valve;

[0049] Drain valve;

[0050] Gas balancing valve; and

[0051] capillary;

[0052] Wherein, the first inlet is connected to the first pipeline through the liquid inlet valve;

[0053] The port is connected to the first air pipe through the pressurizing valve, and is connected to the third pipeline through the capillary tube and the air balancing valve;

[0054] The outlet is connected to the third pipeline through the capillary tube and the drain valve.

[0055] In some embodiments, the air conditioning system further comprises:

[0056] a storage container comprising a second inlet and a second outlet;

[0057] Drain valve;

[0058] Gas balancing valve;

[0059] capillary;

[0060] The second inlet is connected to the first pipeline through the gas balance valve; the second outlet is connected to the third pipeline through the drain valve and the capillary tube.

[0061] In some embodiments, the air conditioning system further comprises:

[0062] a first branch, one end of which is connected to the first pipe and the other end of which is connected to one end of the indoor heat exchanger;

[0063] a fifth throttle valve, arranged on the first branch;

[0064] a second branch, one end of which is connected to the second pipe and the other end of which is connected to the other end of the indoor heat exchanger;

[0065] a refrigeration valve, arranged on the second branch;

[0066] a third branch, one end of which is connected to the third pipe, and the other end of which is connected to the other end of the indoor heat exchanger; and

[0067] The heating valve is arranged on the third branch.

[0068] In some embodiments, each of the indoor heat exchangers is independently provided with the first branch, the fifth throttle valve, the second branch, the cooling valve, the third branch, and the heating valve.

[0069] 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:

[0070] determining an operating mode of the air conditioning system;

[0071] 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.

[0072] In some embodiments, determining the operating mode of the air conditioning system includes:

[0073] 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.

[0074] In some embodiments, the operating mode of the air-conditioning system includes a conventional full cooling mode; in the conventional full 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.

[0075] In some embodiments, the operating mode of the air-conditioning system includes a conventional main cooling mode; in the conventional main cooling mode, the first regulating valve is powered off, the second regulating valve is powered on, and the accumulator is in a non-working state; the outdoor heat exchanger is used as a condenser, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser; the evaporation load of the indoor heat exchanger used as an evaporator is greater than the condensation load of the indoor heat exchanger used as a condenser.

[0076] 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.

[0077] In some embodiments, the operating mode of the air-conditioning system includes a full cold storage and full cooling mode; in the cold storage and full 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.

[0078] In some embodiments, the operating mode of the air-conditioning system includes a fully cold storage and fully heating outdoor unit condensing mode; in the fully cold storage and fully heating outdoor unit condensing 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.

[0079] In some embodiments, the operating mode of the air-conditioning system includes a fully cold storage and fully heating outdoor unit evaporation mode; in the fully cold storage and fully heating outdoor unit evaporation 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.

[0080] In some embodiments, the operating mode of the air-conditioning system includes a cold storage and main cooling mode; in the cold storage and main cooling mode, the first regulating valve is powered off, the second regulating valve is powered on, the outdoor heat exchanger is used as a condenser, the accumulator is used as an evaporator, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser; the evaporation load of the indoor heat exchanger used as an evaporator is greater than the condensation load of the indoor heat exchanger used as a condenser.

[0081] In some embodiments, the operating mode of the air-conditioning system includes a cold storage and main heating outdoor unit evaporation mode; in the cold storage and main heating outdoor unit evaporation 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, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser; the evaporation load of the indoor heat exchanger used as an evaporator is less than the condensation load of the indoor heat exchanger used as a condenser.

[0082] In some embodiments, the operating mode of the air-conditioning system includes a cold storage and main heating outdoor unit condensing mode; in the cold storage and main heating outdoor unit condensing 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, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser; the evaporation load of the indoor heat exchanger used as an evaporator is less than the condensing load of the indoor heat exchanger used as a condenser.

[0083] In some embodiments, the operating mode of the air-conditioning system includes a supercooling release and full cooling mode; in the supercooling release and full cooling mode, the first regulating valve is powered off, the second regulating valve is powered off, the outdoor heat exchanger is used as a condenser, the accumulator is used as a supercooler, and the indoor heat exchanger is used as an evaporator.

[0084] In some embodiments, the operating mode of the air-conditioning system includes a supercooling release and main cooling mode; in the supercooling release and main cooling 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 a supercooler, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser; the evaporation load of the indoor heat exchanger used as an evaporator is greater than the condensation load of the indoor heat exchanger used as a condenser.

[0085] In some embodiments, the operating mode of the air-conditioning system includes a condensing cooling and full cooling mode; in the cooling and full cooling 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 a condenser, and the indoor heat exchanger is used as an evaporator.

[0086] In some embodiments, the operating mode of the air-conditioning system includes a condensing cooling release and main cooling mode; in the condensing cooling release and main cooling 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 a condenser, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser, and the evaporation load of the indoor heat exchanger used as an evaporator is greater than the condensing load of the indoor heat exchanger used as a condenser.

[0087] In some embodiments, the operating mode of the air-conditioning system includes a parallel cooling and full cooling mode; in the parallel cooling and full cooling 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 a condenser, and the indoor heat exchanger is used as an evaporator.

[0088] In some embodiments, the operating mode of the air-conditioning system includes a parallel cooling release and main cooling mode; in the parallel cooling release and main cooling 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 a condenser, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser, and the evaporation load of the indoor heat exchanger used as an evaporator is greater than the condensing load of the indoor heat exchanger used as a condenser.

[0089] In some embodiments, the operating mode of the air-conditioning system includes a conventional full heating mode; in the conventional full 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.

[0090] In some embodiments, the operating mode of the air-conditioning system includes a conventional main heating mode; in the conventional main 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, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser; the evaporation load of the indoor heat exchanger used as an evaporator is less than the condensation load of the indoor heat exchanger used as a condenser.

[0091] 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 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 not working.

[0092] In some embodiments, the operating mode of the air-conditioning system includes a heat storage and full heating mode; in the heat storage and full 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.

[0093] In some embodiments, the operating mode of the air-conditioning system includes a heat storage and complete cooling outdoor unit evaporation mode; in the heat storage and complete cooling outdoor unit evaporation 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 an evaporator.

[0094] In some embodiments, the operating mode of the air-conditioning system includes a heat storage and complete refrigeration outdoor unit condensing mode; in the heat storage and complete refrigeration outdoor unit condensing 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 a condenser, and the indoor heat exchanger is used as an evaporator.

[0095] In some embodiments, the operating mode of the air-conditioning system includes a heat storage and main heating mode; in the heat storage and main 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, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser, and the evaporation load of the indoor heat exchanger used as an evaporator is less than the condensation load of the indoor heat exchanger used as a condenser.

[0096] In some embodiments, the operating mode of the air-conditioning system includes a heat storage and main body refrigeration outdoor unit condensing mode; in the heat storage and main body refrigeration outdoor unit condensing 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 a condenser, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser, and the evaporation load of the indoor heat exchanger used as an evaporator is greater than the condensing load of the indoor heat exchanger used as a condenser.

[0097] In some embodiments, the operating mode of the air-conditioning system includes a heat storage and main body refrigeration outdoor unit evaporation mode; in the heat storage and main body refrigeration outdoor unit evaporation 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, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser, and the evaporation load of the indoor heat exchanger used as an evaporator is greater than the condensation load of the indoor heat exchanger used as a condenser.

[0098] In some embodiments, the operating mode of the air-conditioning system includes a mixed heat release and full heating mode; in the mixed heat release and full 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 an evaporator, and the indoor heat exchanger is used as a condenser.

[0099] In some embodiments, the operating mode of the air-conditioning system includes a mixed heat release and main heating mode; in the mixed heat release and main 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 an evaporator, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser, and the evaporation load of the indoor heat exchanger used as an evaporator is less than the condensation load of the indoor heat exchanger used as a condenser.

[0100] In some embodiments, the operating mode of the air-conditioning system includes an independent heat release and full heating mode; in the independent heat release and full heating 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.

[0101] In some embodiments, the operating mode of the air-conditioning system includes an independent heat release and main heating mode; in the independent heat release and main heating 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, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser, and the evaporation load of the indoor heat exchanger used as an evaporator is less than the condensation load of the indoor heat exchanger used as a condenser.

[0102] 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.

[0103] In some embodiments, the operating mode of the air-conditioning system includes a continuous heating, defrosting and full heating mode; in the continuous heating, defrosting and full heating 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.

[0104] In some embodiments, the operating mode of the air-conditioning system includes a continuous heating and defrosting and main heating mode; in the continuous heating and defrosting and main heating 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, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser, and the evaporation load of the indoor heat exchanger used as an evaporator is less than the condensing load of the indoor heat exchanger used as a condenser.

[0105] In some embodiments, the operating mode of the air-conditioning system includes a continuous heating, defrosting and main cooling mode; in the continuous heating, defrosting and main cooling 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, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser, and the evaporation load of the indoor heat exchanger used as an evaporator is greater than the condensing load of the indoor heat exchanger used as a condenser.

[0106] In some embodiments, the operating mode of the air-conditioning system includes a conventional heat recovery mode; in the conventional heat recovery mode, the first regulating valve and the second regulating valve are both energized, the outdoor heat exchanger is not working, the accumulator is not working, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser, and the evaporation load of the indoor heat exchanger used as an evaporator is equal to the condensation load of the indoor heat exchanger used as a condenser.

[0107] In some embodiments, the operating mode of the air-conditioning system includes a cold storage and heat recovery mode; in the cold storage and heat recovery 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, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser, and the evaporation load of the indoor heat exchanger used as an evaporator is less than the condensation load of the indoor heat exchanger used as a condenser.

[0108] In some embodiments, the operating mode of the air-conditioning system includes a heat storage and heat recovery mode; in the heat storage and heat recovery 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 a condenser, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser, and the evaporation load of the indoor heat exchanger used as an evaporator is greater than the condensation load of the indoor heat exchanger used as a condenser.

[0109] In some embodiments, the operating mode of the air-conditioning system includes a cooling and heat recovery mode; in the cooling and heat recovery 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 a condenser, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser, and the evaporation load of the indoor heat exchanger used as an evaporator is greater than the condensation load of the indoor heat exchanger used as a condenser.

[0110] In some embodiments, the operating mode of the air-conditioning system includes a heat release and heat recovery mode; in the cool release and heat recovery 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, part of the indoor heat exchanger is used as an evaporator, and the rest of the indoor heat exchanger is used as a condenser, and the evaporation load of the indoor heat exchanger used as an evaporator is less than the condensation load of the indoor heat exchanger used as a condenser.

[0111] An embodiment of the present invention further provides a control device for an air conditioning system, comprising:

[0112] a memory configured to store instructions;

[0113] 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.

[0114] 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.

[0115] The air conditioning system provided by the above technical solution includes a first regulating valve, a second regulating valve, an accumulator, an outdoor heat exchanger, and an indoor heat exchanger. By controlling the valve positions of the first and second regulating valves, any one of the accumulator, outdoor heat exchanger, and all indoor heat exchangers can be configured to function as a condenser while the other functions as an evaporator, thereby achieving a rich set of functions for the air conditioning system. Furthermore, the technical solution provided by an embodiment of the present invention includes at least two indoor heat exchangers. When both the accumulator and the outdoor heat exchanger are inoperative, at least one of the indoor heat exchangers can function as a condenser, and at least one of the indoor heat exchangers can function as an evaporator, thereby achieving refrigerant circulation between the indoor heat exchangers. Furthermore, 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 during these periods and enabling continuous heating during defrosting. Therefore, the air conditioning system provided by the above technical solution is highly functional and can meet the diverse needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0116] 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:

[0117] Figure 1 Schematic diagram of the air conditioning system principles provided in some embodiments of the present invention.

[0118] Figure 2 A schematic diagram of the principles of the outdoor unit and accumulator parts of an air-conditioning system provided in some embodiments of the present invention.

[0119] Figure 3 A schematic diagram of the refrigerant flow direction of the outdoor unit of an air-conditioning system provided in some embodiments of the present invention when the outdoor unit is in full condensing mode.

[0120] Figure 4 A schematic diagram of the refrigerant flow direction of the outdoor unit of the air-conditioning system provided in some embodiments of the present invention when the outdoor unit is in the main condensing mode.

[0121] Figure 5 A schematic diagram of the refrigerant flow direction of the outdoor unit of an air-conditioning system provided in some embodiments of the present invention when the outdoor unit is in full evaporation mode.

[0122] Figure 6 A schematic diagram of the refrigerant flow direction of the outdoor unit of the air-conditioning system provided in some embodiments of the present invention when the outdoor unit is in the main evaporation mode.

[0123] Figure 7 A schematic diagram of the refrigerant flow direction of an outdoor unit of an air-conditioning system provided in some embodiments of the present invention when the outdoor unit is in a shut-down state.

[0124] Figure 8 A schematic diagram of the refrigerant flow direction of the accumulator portion of the air-conditioning system provided in some embodiments of the present invention is in an evaporating state.

[0125] Figure 9 A schematic diagram of the refrigerant flow direction of an air-conditioning system provided in some embodiments of the present invention when the accumulator portion is in a supercooled state.

[0126] Figure 10 A schematic diagram of the refrigerant flow direction of an air-conditioning system with the accumulator portion in a condensed state provided in some embodiments of the present invention.

[0127] Figure 11 A schematic diagram of the refrigerant flow direction of an indoor unit of an air-conditioning system in an evaporating state provided in some embodiments of the present invention.

[0128] Figure 12 A schematic diagram of the refrigerant flow direction of an indoor unit of an air-conditioning system in a condensing state provided in some embodiments of the present invention.

[0129] Figure 13 A schematic diagram of the refrigerant flow path of an air-conditioning system in a conventional full cooling mode provided in some embodiments of the present invention.

[0130] Figure 14 A schematic diagram of the refrigerant flow path of an air-conditioning system in a conventional main cooling mode provided by some embodiments of the present invention.

[0131] Figure 15 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.

[0132] Figure 16 A schematic diagram of the refrigerant flow path of an air-conditioning system in full cold storage and full cooling modes provided in some embodiments of the present invention.

[0133] Figure 17 A schematic diagram of the refrigerant flow path of an air-conditioning system in cold storage and full heating outdoor unit condensing mode provided in some embodiments of the present invention.

[0134] Figure 18 A schematic diagram of the refrigerant flow path of an air-conditioning system provided in some embodiments of the present invention in another cold storage and full heating outdoor unit evaporation mode.

[0135] Figure 19 A schematic diagram of the refrigerant flow path of an air-conditioning system in cold storage and main cooling mode provided in some embodiments of the present invention.

[0136] Figure 20 A schematic diagram of the refrigerant flow path of an air-conditioning system provided in some embodiments of the present invention in a cold storage and main heating outdoor unit evaporation mode.

[0137] Figure 21 A schematic diagram of the refrigerant flow path of an air-conditioning system provided in some embodiments of the present invention in a cold storage mode with a main heating unit and an external unit condensing mode.

[0138] Figure 22 A schematic diagram of the refrigerant flow path of an air-conditioning system in a supercooling and full cooling mode provided by some embodiments of the present invention.

[0139] Figure 23 A schematic diagram of the refrigerant flow path of an air-conditioning system provided in some embodiments of the present invention in a supercooling and main cooling mode.

[0140] Figure 24 A schematic diagram of the refrigerant flow path of an air-conditioning system in a cooling and full refrigeration mode provided in some embodiments of the present invention.

[0141] Figure 25 A schematic diagram of the refrigerant flow path of an air-conditioning system in condensing and cooling mode provided by some embodiments of the present invention.

[0142] Figure 26 A schematic diagram of the refrigerant flow path of an air-conditioning system in parallel cooling and full cooling mode provided in some embodiments of the present invention.

[0143] Figure 27 A schematic diagram of the refrigerant flow path of an air-conditioning system provided in some embodiments of the present invention in parallel cooling and main cooling mode.

[0144] Figure 28 A schematic diagram of the refrigerant flow path of an air-conditioning system in a conventional full heating mode provided by some embodiments of the present invention.

[0145] Figure 29 A schematic diagram of the refrigerant flow path of an air-conditioning system in a conventional main heating mode provided in some embodiments of the present invention.

[0146] Figure 30 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.

[0147] Figure 31 A schematic diagram of the refrigerant flow path of an air-conditioning system in a heat storage and full heating mode provided in some embodiments of the present invention.

[0148] Figure 32 A schematic diagram of the refrigerant flow path of an air-conditioning system in a heat storage and full cooling outdoor unit evaporation mode provided in some embodiments of the present invention.

[0149] Figure 33A schematic diagram of the refrigerant flow path of an air-conditioning system in a heat storage and full cooling outdoor unit condensing mode provided in some embodiments of the present invention.

[0150] Figure 34 A schematic diagram of the refrigerant flow path of an air-conditioning system in a heat storage and main heating mode provided by some embodiments of the present invention.

[0151] Figure 35 A schematic diagram of the refrigerant flow path of an air-conditioning system provided in some embodiments of the present invention in a heat storage mode with a main cooling unit and an outdoor unit condensing mode.

[0152] Figure 36 A schematic diagram of the refrigerant flow path of an air-conditioning system provided in some embodiments of the present invention in a heat storage mode with a main cooling unit and an outdoor unit evaporating mode.

[0153] Figure 37 A schematic diagram of the refrigerant flow path of an air-conditioning system in a mixed heat release and full heating mode provided by some embodiments of the present invention.

[0154] Figure 38 A schematic diagram of the refrigerant flow path of an air-conditioning system in a mixed heat release and main heating mode provided by some embodiments of the present invention.

[0155] Figure 39 A schematic diagram of the refrigerant flow path of an air-conditioning system in an independent heat release and full heating mode provided by some embodiments of the present invention.

[0156] Figure 40 A schematic diagram of the refrigerant flow path of an air-conditioning system provided in some embodiments of the present invention in an independent heat release and main heating mode.

[0157] Figure 41 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.

[0158] Figure 42 A schematic diagram of the refrigerant flow path of an air-conditioning system in a continuous heating, defrosting and full heating mode provided by some embodiments of the present invention.

[0159] Figure 43 A schematic diagram of the refrigerant flow path of an air-conditioning system in a continuous heating and defrosting mode and a main heating mode is provided in some embodiments of the present invention.

[0160] Figure 44 A schematic diagram of the refrigerant flow path of an air-conditioning system in a continuous heating, defrosting and main cooling mode provided by some embodiments of the present invention.

[0161] Figure 45 A schematic diagram of the refrigerant flow path of an air-conditioning system in a conventional heat recovery mode provided in some embodiments of the present invention.

[0162] Figure 46 A schematic diagram of the refrigerant flow path of an air-conditioning system in a cold storage and heat recovery mode provided in some embodiments of the present invention.

[0163] Figure 47 A schematic diagram of the refrigerant flow path of an air-conditioning system in a heat storage and heat recovery mode provided in some embodiments of the present invention.

[0164] Figure 48 A schematic diagram of the refrigerant flow path of an air-conditioning system in a cooling and heat recovery mode provided in some embodiments of the present invention.

[0165] Figure 49 A schematic diagram of the refrigerant flow path of an air-conditioning system in a heat release and heat recovery mode provided by some embodiments of the present invention.

[0166] Figure 50 Schematic diagram of the air conditioning system principles provided for other embodiments of the present invention.

[0167] Figure 51 Schematic diagram of the air conditioning system provided in some embodiments of the present invention.

[0168] Figure 52 Schematic diagram of refrigerant flow path when refrigerant is stored in a storage container of an air-conditioning system provided in some further embodiments of the present invention.

[0169] Figure 53 Schematic diagram of refrigerant flow path when refrigerant is released from a storage container of an air-conditioning system provided in some further embodiments of the present invention.

[0170] Figure 54 Schematic diagram of the air conditioning system provided in some further embodiments of the present invention.

[0171] Figure 55 A schematic diagram of a refrigerant flow path when refrigerant is stored in a storage container of an air-conditioning system provided in some further embodiments of the present invention.

[0172] Figure 56 A schematic diagram of a refrigerant flow path when refrigerant is released from a storage container of an air-conditioning system provided in some further embodiments of the present invention.

[0173] Reference numerals:

[0174] 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;

[0175] First pipeline 3; 4, second pipeline; 5, third pipeline; 7, indoor heat exchanger; 3', first branch; 4', second branch; 5', third branch;

[0176] 201, accumulator; 202, first air pipe; 203, second air pipe; 204, first liquid pipe; 204', first connecting branch; 204", second connecting branch; 205, 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, storage container; 220a, first inlet; 221, liquid inlet valve; 220, storage container; 221, liquid inlet valve; 222, pressurizing valve; 223, liquid drain valve; 224, gas balancing valve; 225, capillary tube; 220a, first inlet; 220b, port; 220c, first outlet; 220a', second inlet; 220c', second outlet;

[0177] 602, cooling valve; 603, heating valve; 604, third liquid pipe; 605, third gas pipe;

[0178] 701. Fifth throttle valve. DETAILED DESCRIPTION

[0179] The following combination Figures 1 to 56 The technical solution provided by the present invention is described in more detail.

[0180] See also Figure 1 An embodiment of the present invention provides an air conditioning system, comprising a compressor 101, an outdoor heat exchanger 104, at least two indoor heat exchangers 7, an accumulator 201, a first regulating valve 102, and a second regulating valve 103. The compressor 101 includes an inlet and an outlet. 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.

[0181] 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, each 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 section 1; the accumulator 201 and its associated valves, pipes, and other components are collectively referred to as the accumulator section 2.

[0182] Specifically, the outdoor heat exchanger 104 can be used as a condenser, and each indoor heat exchanger 7 and the accumulator 201 can be used as an evaporator; the outdoor heat exchanger 104 can be used as a condenser, and all indoor heat exchangers 7 can be used as evaporators, and the accumulator 201 can not work; the outdoor heat exchanger 104 can be used as a condenser, and all indoor heat exchangers 7 can not work, and the accumulator 201 can be used as an evaporator; the outdoor heat exchanger 104 can be used as a condenser, and some indoor heat exchangers 7 can be used as evaporators, while the remaining indoor heat exchangers 7 can be used as condensers. In this mode, the accumulator 201 can be used as an evaporator or a condenser.

[0183] 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, and the outdoor heat exchanger 104 and the accumulator 201 can also be used as evaporators; some of the indoor heat exchangers 7 can also be used as condensers, and the remaining indoor heat exchangers 7 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.

[0184] Of course, the accumulator 201 serves as an evaporator, and at least one of the outdoor heat exchanger 104 and the indoor heat exchanger 7 serves as a condenser, or both serve as condensers; it is also possible that the accumulator 201 serves as an evaporator, and one of the outdoor heat exchanger 104 and the indoor heat exchanger 7 serves as a condenser, and the other does not work; it is also possible that the accumulator 201 serves as an evaporator, and part of the indoor heat exchanger 7 serves as a condenser, and the remaining indoor heat exchanger 7 and the outdoor heat exchanger 104 serve as an evaporator, a condenser, or do not work.

[0185] Accumulator 201 is filled with energy storage materials, such as ice water, organic phase change materials like paraffin, inorganic phase change materials like sodium sulfate, and inorganic salts. 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.

[0186] 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.

[0187] When energy storage device 2 is used for defrosting, it can shoulder the system's evaporation load. Compared to reverse-cycle defrosting solutions used by non-energy storage air conditioners (where the indoor heat exchanger acts as the evaporator and the outdoor heat exchanger acts as the condenser), this eliminates the need to absorb heat from the indoor environment, helping to maintain indoor comfort. Overall, this multifunctional energy storage air conditioning system can effectively reduce operating costs for a variety of application scenarios.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] 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.

[0192] Furthermore, the technical solution of the above embodiment has multiple indoor heat exchangers 7, and the working states of these indoor heat exchangers 7 can be the same or different. Specifically, for example, all indoor heat exchangers 7 can be involved in the operation: some indoor heat exchangers 7 can act as evaporators, and the rest of the indoor heat exchangers 7 can act as condensers; or only some indoor heat exchangers 7 can be in operation, and the working states of the indoor heat exchangers 7 involved in the operation can be the same or different, and some indoor heat exchangers 7 can act as evaporators, and the rest of the indoor heat exchangers 7 involved in the operation can act as condensers. Alternatively, multiple indoor heat exchangers 7 can cooperate with the first regulating valve 102, the second regulating valve 103, and the compressor 101 to form a refrigerant circulation path to achieve heat recovery, while the outdoor heat exchanger 104 and the accumulator 201 are both inoperative, that is, neither participates in the refrigerant circulation.

[0193] 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.

[0194] See also Figure 1In some embodiments, the air-conditioning system further includes a first pipeline 3, a second pipeline 4, and a third pipeline 5. 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 each 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 each indoor heat exchanger 7. One end of the third pipeline 5 is connected to the outlet of the accumulator 201 and the inlet of the compressor 101. The other end of the third pipeline 5 is connected to the other end of each indoor heat exchanger 7.

[0195] The first pipeline 3, the second pipeline 4 and the third pipeline 5 are commonly used pipelines, and each indoor heat exchanger 7 is connected to them in the same manner. That is, each indoor heat exchanger 7 is arranged in parallel.

[0196] The indoor heat exchangers 7 are arranged in parallel, and their operating states are independent. Whether one indoor heat exchanger 7 is operating or not does not affect the operating states of the other indoor heat exchangers 7. Each indoor heat exchanger 7 can independently switch between non-operating modes, operating as a condenser, and operating as an evaporator.

[0197] 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.

[0198] 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 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.

[0199] 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.

[0200] 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.

[0201] 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.

[0202] 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 member. The third valve port S of the second regulating valve 103 is connected to 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 inlet of the indoor heat exchanger 7 and the accumulator 201.

[0203] 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.

[0204] 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.

[0205] 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, and the second flow channel is connected to the first regulating valve 102, the second regulating valve 103, and the inlet of the compressor 101. In some embodiments, the second flow channel is also connected to the third pipeline 5. 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.

[0206] See also Figure 1 and Figure 2 In 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 .

[0207] 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.

[0208] 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.

[0209] Table 1 Valve status of outdoor unit

[0210] state First regulating valve 102 Second regulating valve 103 First throttle valve 105 Complete condensation Power off Power off Open Main body condensation Power off Get electricity Open Complete evaporation Get electricity Get electricity Throttling Main body evaporation Get electricity Get electricity Throttling Heat exchanger shutdown Get electricity Get electricity closure

[0211] The outdoor unit 1 has five states: complete condensation, main condensation, complete evaporation, main evaporation, and outdoor heat exchanger off. In the outdoor heat exchanger off state, the first throttle valve 105 is closed or slightly opened, the fan is off, and no refrigerant is forced to flow. Herein, the state in which refrigerant flows through the valve is referred to as open, and the state in which no refrigerant flows is referred to as closed. In the throttled state, refrigerant can flow through the valve. This is described in detail below.

[0212] See also Figure 3 As shown in Table 1, if only the outdoor heat exchanger 104 is used as a condenser, it is also called the full condensing mode. In this mode, the first regulating valve 102 and the second regulating valve 103 are both powered off. The first throttle valve 105 is opened, and the refrigerant can flow through the first throttle valve 105. 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 are connected. 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 are connected. The second regulating valve 103 does not work. Then the flow direction of the refrigerant in the outdoor unit is as follows: Figure 3 As shown: the refrigerant flows out 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, then flows to the outdoor heat exchanger 104, the first throttle valve 105, and then flows to the first flow channel of the subcooler 107, and then flows out of the outdoor unit through the first pipeline 3. The refrigerant returning to the outdoor unit returns to the gas-liquid separator 108 along the third pipeline 5, and then flows to the inlet of the compressor 101. In this mode, the refrigerant in the second flow channel of the subcooler 107 is mainly the refrigerant in the third pipeline 5. Of course, a part of the refrigerant also flows from the outlet of the compressor 101 through the first valve port D and the second valve port C of the second regulating valve 103, and is then connected to the second flow channel of the subcooler 107 through a capillary tube.

[0213] See also Figure 4As shown in Table 1, if the outdoor heat exchanger 104 is not the only condenser, this is called the main condensing mode. In this mode, the first regulating valve 102 is de-energized, and the second regulating valve 103 is energized. The first throttle valve 105 is open. 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 is connected to the fourth valve port E. The first valve port D and the fourth valve port E of the second regulating valve 103 are connected, and the second valve port C is connected to the third valve port S. Both the first regulating valve 102 and the second regulating valve 103 are in operation.

[0214] Then the refrigerant flows in the outdoor unit as follows Figure 4 As shown: the refrigerant flows out from the outlet of the compressor 101 and is divided into two paths.

[0215] The refrigerant in the first path passes through the first valve port D and the second valve port C of the first regulating valve 102, then flows to the outdoor heat exchanger 104, the first throttle valve 105, then flows to the first flow channel of the subcooler 107, and then flows out of the outdoor unit part through the first pipeline 3.

[0216] The second refrigerant flows out of the outlet of the compressor 101 , flows to the first valve port D and the fourth valve port E of the second regulating valve 103 , and then flows out of the outdoor unit along the second pipeline 4 .

[0217] The refrigerant returning to the outdoor unit returns to the gas-liquid separator 108 along the third pipeline 5 and then flows to the inlet of the compressor 101. In this mode, the refrigerant in the second flow channel of the subcooler 107 is the refrigerant in the third pipeline 5.

[0218] See also Figure 5 As shown in Table 1, in another mode, only the outdoor heat exchanger 104 functions as an evaporator. This mode is also referred to as the full evaporation mode. In this mode, the first regulating valve 102 is energized, and the second regulating valve 103 is also energized. The first throttle valve 105 is in the throttling state, capable of achieving a throttling effect. 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 is connected to the third valve port S. 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 is connected to the third valve port S. Both the first regulating valve 102 and the second regulating valve 103 are in operation.

[0219] Then the refrigerant flows in the outdoor unit as follows Figure 5 As shown, the refrigerant flows out from the outlet of the compressor 101 , flows to the first valve port D and the fourth valve port E of the second regulating valve 103 , and then flows out of the outdoor unit along the second pipeline 4 .

[0220] The refrigerant returning to the outdoor unit flows along the first pipeline 3 back to the subcooler 107, then passes through the first throttle valve 105 and the outdoor heat exchanger 104, returns to the second valve port C and the third valve port S of the first regulating valve 102, then flows to the gas-liquid separator 108, and finally flows to the inlet of the compressor 101. In this mode, the refrigerant in the second flow path of the subcooler 107 is the refrigerant flowing out of the second valve port C and the third valve port S of 102.

[0221] See also Figure 6 As shown in Table 1, in another mode, the outdoor heat exchanger 104 is not the only one serving as the evaporator. This mode is also referred to as the main evaporation mode. In this mode, the first regulating valve 102 and the second regulating valve 103 are both energized. The first throttling element 105 is in the throttling 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 is connected to the third valve port S. 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 is connected to the third valve port S. Both the first regulating valve 102 and the second regulating valve 103 are in the operating state.

[0222] Then the refrigerant flows in the outdoor unit as follows Figure 6 As shown, the refrigerant flows out from the outlet of the compressor 101 , flows to the first valve port D and the fourth valve port E of the second regulating valve 103 , and then flows out of the outdoor unit along the second pipeline 4 .

[0223] The refrigerant returning to the outdoor unit is divided into two paths: the first path returns to the subcooler 107 along the first pipeline 3, then passes through the first throttle valve 105 and the outdoor heat exchanger 104, returns to the second valve port C and the third valve port S of the first regulating valve 102, then flows to the gas-liquid separator 108, and finally flows to the inlet of the compressor 101. The second path flows back along the third pipeline 5, then flows to the gas-liquid separator 108, and finally flows to the inlet of the compressor 101.

[0224] In this mode, the refrigerant in the second flow path of subcooler 107 is the refrigerant flowing from the second valve port C and the third valve port S of first regulating valve 102. Of course, depending on the connection status of the pipelines, the refrigerant in the second flow path of subcooler 107 can also be the refrigerant in third pipeline 5. By switching the on / off state and the throttling state of second throttle valve 106, the refrigerant in the second flow path of subcooler 107 can also come from the first flow path of subcooler 107.

[0225] See also Figure 7As shown in Table 1, in another mode, the outdoor heat exchanger 104 is shut down. In this mode, the first regulating valve 102 is energized, and the second regulating valve 103 is also energized. The first throttle valve 105 is closed, and the refrigerant cannot flow through the first throttle valve 105. 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 is connected to the third valve port S. 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 is connected to the third valve port S. The first regulating valve 102 is not operating, and the second regulating valve 103 is in operation.

[0226] Then the refrigerant flows in the outdoor unit as follows Figure 7 As shown, the refrigerant flows out from the outlet of the compressor 101 , flows to the first valve port D and the fourth valve port E of the second regulating valve 103 , and then flows out of the outdoor unit along the second pipeline 4 .

[0227] The refrigerant returned to the outdoor unit flows back through the third pipe 5 , then flows to the gas-liquid separator 108 , and finally flows to the inlet of the compressor 101 .

[0228] In this mode, the refrigerant in the second flow channel of the subcooler 107 is the refrigerant in the third pipeline 5 .

[0229] Back to Figure 1 and Figure 2 In some embodiments, the air-conditioning system further includes a bypass valve 211, which is arranged in the first pipeline 3. 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.

[0230] By switching the bypass valve 211, the on / off state of the section of the first pipeline 3 can be controlled. Specifically, the bypass valve 211 controls whether the refrigerant from the indoor unit can flow along the first pipeline 3 to the subcooler 107 or to the inlet of the accumulator 201. Of course, the above flow process can also be reversed.

[0231] See also Figure 1 In some embodiments, the air conditioning system further includes a third throttle valve 209 , through which the outlet of the accumulator 201 is connected to the first pipeline 3 . The third throttle valve 209 can be implemented as an electronic expansion valve. The third throttle valve 209 is located downstream of the outlet of the accumulator 201 . The section of the pipeline where the third throttle valve 209 is located is referred to as the second liquid pipe 205 .

[0232] See also Figure 1In some embodiments, the air conditioning system further includes a thermal relief valve 210, through which the outlet of the accumulator 201 is connected to the third pipeline 5. The branch where the thermal relief valve 210 is located is referred to as the second air pipe 203. The thermal relief valve 210 is used to control the on-off state of the second air pipe 203. One side of the thermal relief valve 210 is connected to the outlet of the accumulator 201, and the other side of the thermal relief valve 210 is connected to the third pipeline 5. In this way, the refrigerant passing through the thermal relief valve 210 can flow into the third pipeline 5 or in the opposite direction.

[0233] See also Figure 1 and Figure 8 In some embodiments, the air-conditioning system further includes a first connecting branch 204', a second connecting branch 204", a fourth throttle valve 206 and a cold release valve 207. The first connecting branch 204' connects the inlet of the accumulator 201 and the first pipeline 3. The 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. The fourth throttle valve 206 is arranged on the first connecting branch 204'. The cold release valve 207 is arranged on the second connecting branch 204".

[0234] To simplify the arrangement of the pipelines, in some embodiments, part of the pipelines of the first communication branch 204 ′ and the second communication branch 204 ″ may be shared. The shared part may be marked with the first liquid pipe 204 .

[0235] In some embodiments, the air conditioning system further includes a first air pipe 202 and a high-pressure air valve 208. The first air pipe 202 connects the inlet of the accumulator 201 and the third pipeline 5. The high-pressure air valve 208 is arranged on the first air pipe 202.

[0236] The air-conditioning system provided by the embodiment of the present disclosure can enable the outdoor unit of the heat recovery air-conditioning system to have modes such as complete condensation, main condensation, complete evaporation, main evaporation, and heat exchanger shutdown through the switching of pipelines and valves. Combined with the accumulator mode and the indoor unit mode introduced later, the air-conditioning system can achieve 37 working modes such as complete cold storage, cold storage and complete refrigeration, cold storage and main refrigeration, and continuous heating during defrosting. This broadens the scope of use of the energy storage system, improves the availability of the energy storage system, and continuously heats during defrosting with almost no fluctuation in the heating temperature, thereby improving the user experience and better meeting the diverse needs of users.

[0237] Table 2 Valve status of accumulator part

[0238]

[0239] The energy storage part 2 has four states: evaporation, supercooling, condensation, and non-operation.

[0240] See also Figure 8As shown in Table 2, when the accumulator is in evaporation mode, cold release valve 207 is closed, preventing refrigerant from passing through it. High-pressure gas valve 208 is closed, preventing refrigerant from passing through it. Thermal release valve 210 is open, allowing refrigerant to flow through it. In this mode, refrigerant flows along the following path: It enters first connecting branch 204' along first liquid pipe 204 and then flows into the inlet of accumulator 201. It then flows out of accumulator 201 through its outlet, passes through thermal release valve 210, and flows along second gas pipe 203.

[0241] See also Figure 9 As shown in Table 2, when the accumulator is partially in supercooling mode, the cold release valve 207 is open, allowing the refrigerant to pass through it. The high-pressure gas valve 208 is closed, preventing the refrigerant from passing through it. The thermal release valve 210 is closed, preventing the refrigerant from flowing through it. In this mode, the refrigerant flows along the following path: the refrigerant enters the second connecting branch 204" along the first liquid pipe 204, and then flows into the inlet of the accumulator 201. Subsequently, the refrigerant flows out of the accumulator 201 through the outlet of the accumulator 201, and then flows out through the third throttle valve 209.

[0242] See also Figure 10 As shown in Table 2, when the accumulator is in condensing mode, the cold relief valve 207 is closed, preventing refrigerant from passing through it. The high-pressure gas valve 208 is open, allowing refrigerant to pass through it. The thermal relief valve 210 is closed, preventing refrigerant from passing through it. In this mode, the refrigerant flows along the following path: along the first gas pipe 202, through the high-pressure gas valve 208, and into the inlet of the accumulator 201. The refrigerant then flows out of the accumulator 201 through its outlet and out through the third throttle valve 209.

[0243] See also Figure 1 In some embodiments, the air conditioning system further includes a first branch 3', a fifth throttle valve 701, a second branch 4', a cooling valve 602, a third branch 5', and a heating valve 603. One end of the first branch 3' is connected to the first pipeline 3, and the other end of the first branch 3' is connected to one end of the indoor heat exchanger 7. The fifth throttle valve 701 is arranged on the first branch 3'. One end of the second branch 4' is connected to the second pipeline 4, and the other end of the second branch 4' is connected to the other end of the indoor heat exchanger 7. The cooling valve 602 is arranged on the second branch 4'. One end of the third branch 5' is connected to the third pipeline 5, and the other end of the third branch 5' is connected to the other end of the indoor heat exchanger 7. The heating valve 603 is arranged on the third branch 5'.

[0244] In some embodiments, each indoor heat exchanger 7 is independently provided with a first branch 3 ′, a fifth throttle valve 701 , a second branch 4 ′, a cooling valve 602 , a third branch 5 ′ and a heating valve 603 .

[0245] This arrangement makes the working states of the indoor heat exchangers 7 independent of each other, and each indoor heat exchanger 7 can independently switch between various states such as condensation, evaporation, and non-operation without affecting each other.

[0246] See also Figure 1 In some embodiments, the air conditioning system further comprises a subcooling component 601 and a fourth pipeline 8, wherein the fourth branch is connected to the third pipeline 8 via a liquid pipe electronic expansion valve 301; one of the flow paths of the subcooling component 601 is located in the first branch 3' and between the fifth throttle valve 701 and the first pipeline 3. One end of the other flow path of the subcooling component 601 is connected to the third pipeline 8, and the other end of the other flow path of the subcooling component 601 is connected to the third pipeline 5. It should be noted that in some embodiments, the third pipeline 5 includes two lines arranged in parallel, which are directly connected to each other without a throttling component. One of the third pipelines 5 is connected to the other end of each indoor heat exchanger 7 via a refrigeration valve 602, and the other third pipeline 5 is connected to the other end of the second flow path of each subcooling component 601.

[0247] Table 3 Valve status of indoor unit

[0248]

[0249] The indoor unit has three states: evaporation, condensation, and non-operating.

[0250] See also Figure 11 As shown in Table 3, when an indoor heat exchanger 7 is in the evaporating state, the cooling valve 602 is open, allowing the refrigerant to flow through the cooling valve 602. The heating valve 603 is closed, preventing the refrigerant from flowing through the heating valve 603. The refrigerant then flows along the first pipeline 3 into the first branch 3', then into the indoor heat exchanger 7, flows out of the indoor heat exchanger 7, then along the third gas pipe 605 into the cooling valve 602, and then along the third branch 5' into the third pipeline 5.

[0251] See also Figure 12 As shown in Table 3, when a particular indoor heat exchanger 7 is in a condensing state, the cooling valve 602 is closed, and the refrigerant cannot flow through the cooling valve 602. The heating valve 603 is open, and the refrigerant can flow through the heating valve 603. The refrigerant then flows along the second pipeline 4 into the second branch 4', then along the third gas pipe 605 into the indoor heat exchanger 7, flows out, and then along the third liquid pipe 604 into the first branch 3', and then into the first pipeline 3.

[0252] The above technical solution, on the one hand, realizes the supercooling treatment of the refrigerant in the first branch 3', and uses the refrigerant in the first pipeline 3 and the third pipeline 5, without the need to use external refrigerant. The refrigerant circulation path is reasonable and simple, and efficient utilization of the refrigerant at the indoor heat exchanger 7 can be achieved.

[0253] The air conditioning system provided by the above technical solution, through the switching of pipelines and valves, can achieve 37 functions, including complete cold storage, cold storage with complete cooling, and cold storage with main cooling, etc. 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 perform heating during defrosting, that is, it can provide continuous heating. Furthermore, by releasing pre-stored heat during the heating process, the indoor unit continues to heat during defrosting, so users will not feel a drop in temperature or a decrease in heating effect. Therefore, continuous defrosting has better performance and greater user comfort.

[0254] 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.

[0255] 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.

[0256] 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.

[0257] 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.

[0258] 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.

[0259] 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.

[0260] 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;

[0261] 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.

[0262] 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.

[0263] The working modes of the air-conditioning system provided by the embodiment of the present invention are described in detail below with reference to the accompanying drawings.

[0264] Table 4 Working modes of air conditioning system

[0265]

[0266]

[0267]

[0268] See also Figure 13 In some embodiments, the operating mode of the air-conditioning system includes a conventional full cooling mode; in the conventional full cooling mode, the first regulating valve 102 is powered off, the second regulating valve 103 is 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.

[0269] The refrigerant flow direction is: the refrigerant flows out of the compressor 101, flows to the first valve port D and the second valve port C of the first regulating valve 102, and then flows to the outdoor heat exchanger 104. At this time, the outdoor heat exchanger 104 acts as a condenser, and then flows to the first throttle valve 105, flows to the subcooler 107, and then flows to the first pipeline 3, and then flows to the third liquid pipe 604, and then flows to the fifth throttle valve 701, and then enters the indoor heat exchanger 7, and then flows to the third gas pipe 605, the refrigeration valve 602, and then flows to the third pipeline 5, and then flows to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0270] This mode is the same as the cooling mode of the air conditioner in the prior art. 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 to achieve cooling.

[0271] See also Figure 14 In some embodiments, the operating mode of the air conditioning system includes a conventional cooling mode. In this mode, the first regulating valve 102 is de-energized, the second regulating valve 103 is energized, and the accumulator 201 is in a non-operating state. The outdoor heat exchanger 104 functions as a condenser, some of the indoor heat exchangers 7 function as evaporators, and the remaining indoor heat exchangers 7 function as condensers. The evaporation load of the indoor heat exchanger 7 functioning as an evaporator is greater than the condensation load of the indoor heat exchanger 7 functioning as a condenser.

[0272] In this mode, most of the indoor heat exchangers 7 are used as evaporators, and a small number of indoor heat exchangers 7 are used as condensers. That is, there are more indoor heat exchangers 7 in the first refrigerant circulation loop, and fewer indoor heat exchangers 7 in the second refrigerant circulation loop. The refrigerant flows along the following paths. The fluid from the compressor 101 is divided into two paths:

[0273] The first route is the same as the refrigerant flow direction in the conventional full cooling mode: the refrigerant flows out of the compressor 101, flows to the first valve port D and the second valve port C of the first regulating valve 102, and then flows to the outdoor heat exchanger 104. At this time, the outdoor heat exchanger 104 acts as a condenser, and then flows to the first throttle valve 105, flows to the subcooler 107, and then flows to the first pipeline 3, and then flows to the third liquid pipe 604, and then flows to the fifth throttle valve 701, and then enters the indoor heat exchanger 7, and then flows to the third gas pipe 605, the refrigeration valve 602, and then flows to the third pipeline 5, and then flows to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0274] The refrigerant in the first path flows as follows: the refrigerant flows out of the compressor 101, then enters the first valve port D and the fourth valve port E of the second regulating valve 103, then flows to the second pipeline 4, then enters the heating valve 603 corresponding to some indoor heat exchangers 7, passes through the third gas pipe 605, enters the indoor heat exchanger 7, then flows to the fifth throttle valve 701, and then flows along the third liquid pipe 604 to the first pipeline 3. Then, following the flow direction of the first pipeline 3 in the first path refrigerant, it enters the indoor heat exchanger 7 corresponding to the first path refrigerant.

[0275] In conventional cooling mode, the accumulator 201 is inactive and has no energy storage effect. The outdoor heat exchanger 104 functions as a condenser, while a portion of the indoor heat exchangers 7 function as evaporators, and another portion of the indoor heat exchangers 7 function as condensers. The evaporation load of the indoor heat exchangers 7 functioning as evaporators is greater than the condensation load of the indoor heat exchangers 7 functioning as condensers, primarily achieving cooling. This allows refrigerant to circulate between the indoor heat exchangers 7, reducing compressor energy consumption and achieving energy savings.

[0276] See also Figure 15 In some embodiments, the air conditioning system's operating mode includes a full cold storage mode; in this mode, both the first regulating valve 102 and the second regulating valve 103 are de-energized. In the full cold storage mode, the first regulating valve 102 is energized, the second regulating valve 103 is de-energized, the indoor heat exchanger 7 is inoperative, the outdoor heat exchanger 104 functions as a condenser, and the accumulator 201 functions as an evaporator.

[0277] The refrigerant flows along the following path: the refrigerant flows out of the compressor 101, then flows to the first valve port D and the second valve port C of the first regulating valve 102, then flows to the outdoor heat exchanger 104, and then flows to the first throttle valve 105, then flows to the subcooler 107, then flows along the first pipeline 3, then flows along the fourth throttle valve 206, then flows to the inlet of the accumulator 201, and then flows out from the outlet of the accumulator 201, and then flows along the heat release valve 210, flows to the second air pipe 203, then flows to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0278] In full cold storage mode, the indoor heat exchanger 7 is inactive, the outdoor heat exchanger 104 functions as a condenser, and the accumulator 201 functions as an evaporator. This mode is suitable for use during off-peak electricity price periods, with cold stored in the accumulator 201. During peak electricity price periods, the accumulator 201 can release cold energy, thereby reducing the power consumption of the air conditioning system during peak electricity price periods, achieving "peak shaving" and valley filling, and lowering the operating costs of the air conditioning system.

[0279] See also Figure 16In some embodiments, the working mode of the air-conditioning system includes a full cold storage and full cooling mode; in the cold storage and full 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.

[0280] The refrigerant flows along the following path: the refrigerant flows out from the outlet of the compressor 101, then flows to the first valve port D and the second valve port C of the first regulating valve 102, then flows to the outdoor heat exchanger 104, then flows to the first throttle valve 105, then flows to the subcooler 107, then flows to the first pipeline 3, and then the refrigerant is divided into two routes.

[0281] The first path flows along the following path: the refrigerant flows to the fourth throttle valve 206 , then enters the inlet of the accumulator 201 , then flows out from the outlet of the accumulator 201 , then flows back to the gas-liquid separator 108 , and finally returns to the inlet of the compressor 101 .

[0282] The second path flows along the following route: the refrigerant flows from the bypass valve 211 to the first pipeline 3, then flows to the third liquid pipe 604, then flows to the fifth throttle valve 701, then enters the indoor heat exchanger 7, then flows along the third gas pipe 605, flows to the refrigeration valve 602, then enters the third pipeline 5, then flows into the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0283] The full cold storage and full cooling mode is also suitable for off-peak electricity price periods. The accumulator 201 and the indoor heat exchanger 7 both function as evaporators. While cooling, the accumulator 201 also stores cold. During peak electricity price periods, the accumulator 201 can release cold energy, thereby reducing the power consumption of the air conditioning system during peak electricity price periods, achieving "peak shaving" and reducing air conditioning operating costs.

[0284] See also Figure 17 In some embodiments, the working mode of the air-conditioning system includes a full cold storage and full heating mode (outdoor unit condensation); in the cold storage and full heating mode (outdoor unit condensation), the first regulating valve 102 is powered off and 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.

[0285] The refrigerant flows along the following paths. The refrigerant from the compressor 101 is divided into two paths:

[0286] The first route: the refrigerant flows out from the outlet of the compressor 101, then enters the outdoor heat exchanger 104 along the first valve port D and the second valve port C of the first regulating valve 102, then flows along the first throttle valve 105, then enters the subcooler 107, then enters the fourth throttle valve 206, then enters the inlet of the accumulator 201, then flows out along the outlet of the accumulator 201, then enters the heat release valve 210, then flows along the second air pipe 203, then enters the third pipeline 5, then returns to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0287] The second route: The refrigerant flows out from the outlet of the compressor 101, then enters the first valve port and the fourth valve port E of the second regulating valve 103, then enters the second pipeline 4, then follows the heating valve 603, enters the third gas pipe 605, then enters the indoor heat exchanger 7, then flows along the fifth throttle valve 701, then flows along the third liquid pipe 604 to the first pipeline 3, and then enters the bypass valve 211, then flows into the fourth throttle valve 206, and then overlaps with the refrigerant of the first route.

[0288] In the full cold storage and full heating mode (outdoor unit condensing), the indoor heat exchanger 7 functions as a condenser to achieve full heating, while the accumulator 201 functions as an evaporator, simultaneously storing cold and heating. Refrigerant circulation is achieved between the indoor heat exchanger 7 and the accumulator 201, and the outdoor heat exchanger 104 also functions as a condenser to ensure sufficient condensing capacity.

[0289] See also Figure 18 In some embodiments, the working mode of the air-conditioning system includes a full cold storage and full heating mode (outdoor unit evaporation); in the cold storage and full heating mode (outdoor unit evaporation), 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.

[0290] The refrigerant flows along the following path: the refrigerant flows out from the outlet of the compressor 101, then flows along the first valve port D and the fourth valve port E of the second regulating valve 103, then flows along the second pipeline 4, then flows along the heating valve 603, then enters the third gas pipe 605, and then enters the indoor heat exchanger 7, then enters the fifth throttle valve 701, then enters the third liquid pipe 604, then enters the first pipeline 3, and then enters the bypass valve 211, and then the refrigerant is divided into two paths.

[0291] First route: The refrigerant flows along the first pipeline 3, then flows to the subcooler 107, then flows to the first throttle valve 105, then enters the outdoor heat exchanger 104, then enters the first regulating valve 102, then returns to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0292] Second route: The refrigerant flows along the first liquid pipe 204, then flows to the fourth throttle valve 206, then enters the inlet of the accumulator 201, then flows out along the outlet of the accumulator 201, then enters the heat release valve 210, and then flows along the second gas pipe 203, then returns to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0293] In the full cold storage and full heating mode (outdoor evaporation), the indoor heat exchanger 7 functions as a condenser to achieve full heating, while the accumulator 201 functions as an evaporator, simultaneously storing cold and heating. Refrigerant circulation is achieved between the indoor heat exchanger 7 and the accumulator 201, and the outdoor heat exchanger 104 also functions as an evaporator to ensure sufficient indoor heating capacity.

[0294] See also Figure 19 In some embodiments, the operating mode of the air-conditioning system includes a cold storage and main cooling mode; in the cold storage and main cooling 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, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser; the evaporation load of the indoor heat exchanger 7 used as an evaporator is greater than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0295] The refrigerant flows along the following paths: The refrigerant from the compressor 101 is divided into two paths.

[0296] First route: The refrigerant flows from the compressor 101, the first valve port D and the second valve port C of the first regulating valve 102, then flows to the outdoor heat exchanger 104, then enters the first throttle valve 105, then enters the subcooler 107, and then is divided into two branches.

[0297] First branch: the refrigerant flows along the fourth throttle valve 206 into the inlet of the accumulator 201, then flows out from the outlet of the accumulator 201, then enters the heat release valve 210, then flows along the third pipeline 5, flows back to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0298] Second branch: The refrigerant flows along the first pipeline 3 to the third liquid pipe 604, then enters the fifth throttle valve 701, then enters the indoor heat exchanger 7, and then enters the third gas pipe 605, then enters the refrigeration valve 602, then flows along the third pipeline 5, then returns to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0299] Second route: The refrigerant flows out from the outlet of the compressor 101, then flows along the first valve port D and the fourth valve port E of the second regulating valve 103, then flows along the second pipeline 4, then enters the heating valve 603, then flows along the third gas pipe 605, then enters the indoor heat exchanger 7, then enters the fifth throttle valve 701, then flows along the third liquid pipe 604, flows to the first pipeline 3, and then merges with the refrigerant in the second branch.

[0300] In the cold storage and main cooling mode, the accumulator 201 acts as an evaporator and can store cold through the accumulator 201. During peak electricity price periods, the accumulator 201 can release cold energy, thereby reducing the power consumption of the air conditioning system during peak electricity price periods, achieving "peak shaving and valley filling" of electricity, and reducing the operating costs of the air conditioner. In addition, some indoor heat exchangers 7 are used as evaporators, and other indoor heat exchangers 7 are used as condensers. This can realize refrigerant circulation between the indoor heat exchangers 7, reduce compressor energy consumption, and achieve energy-saving effects. The evaporation load of the indoor heat exchanger 7 used as an evaporator is greater than the condensing load of the indoor heat exchanger 7 used as a condenser, achieving main cooling.

[0301] See also Figure 20 In some embodiments, the working mode of the air-conditioning system includes a cold storage and main heating mode (outdoor unit evaporation); in the cold storage and main heating mode (outdoor unit evaporation), 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, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser; the evaporation load of the indoor heat exchanger 7 used as an evaporator is less than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0302] The refrigerant flows along the following path: the refrigerant flows out from the outlet of the compressor 101, then flows to the first valve port D and the fourth valve port E of the second regulating valve 103, then flows to the second pipeline 4, then flows to the heating valve 603, then flows along the third gas pipe 605, then enters the indoor heat exchanger 7, then along the fifth throttle valve 701, and then along the third liquid pipe 604, flows to the second pipeline 3, then flows along the bypass valve 211, and then the refrigerant is divided into two paths.

[0303] The first route: the refrigerant enters the fourth throttle valve 206, then enters the inlet of the accumulator 201, then flows out from the outlet of the accumulator 201, then flows along the heat release valve 210, flows to the second air pipe 203, and then flows to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0304] Second path: Flows along first pipeline 3, then flows into subcooler 107, then flows to first throttle valve 105, then flows to outdoor heat exchanger 104, then enters second valve port C and third valve port S of first regulating valve 102, then returns to gas-liquid separator 108, and finally returns to the inlet of compressor 101. At this time, the refrigerant in the second flow path of subcooler 107 can be the fluid exiting third valve port S of first regulating valve 102.

[0305] In this operating mode, part of the indoor heat exchanger 7 is in the evaporating state, and part of the refrigerant in the first pipeline 3 enters part of the indoor heat exchanger 7. Then, it passes through the fifth throttle valve 701 and enters the indoor heat exchanger 7. Then, it flows along the third gas pipe 605 into the refrigeration valve 602, and finally enters the third pipeline 5. Subsequently, the refrigerant in the third pipeline 5 also overlaps with the refrigerant in the first pipeline that passes through the heat release valve 210.

[0306] In the cold storage and main heating mode (outdoor unit evaporation), the accumulator 201 acts as an evaporator and can store cold through the accumulator 201. During peak electricity price periods, the accumulator 201 can release cold energy, thereby reducing the power consumption of the air conditioning system during peak electricity price periods, achieving "peak shaving and valley filling" of electricity, and reducing the operating costs of the air conditioner. In addition, some indoor heat exchangers 7 are used as evaporators, and other indoor heat exchangers 7 are used as condensers. This can realize the circulation of refrigerant between the indoor heat exchangers 7, reduce the energy consumption of the compressor, and have an energy-saving effect. The evaporation load of the indoor heat exchanger 7 used as an evaporator is less than the condensing load of the indoor heat exchanger 7 used as a condenser, achieving main heating.

[0307] See also Figure 21 In some embodiments, the operating mode of the air-conditioning system includes a cold storage and main heating mode (outdoor unit condensing); in the cold storage and main heating mode (outdoor unit condensing), the first regulating valve 102 is powered off and 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, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser; the evaporation load of the indoor heat exchanger 7 used as an evaporator is less than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0308] The refrigerant flows along the following paths: The refrigerant coming out of the compressor 101 is divided into two paths.

[0309] First route: The refrigerant flows out of the outlet of compressor 101, enters the first valve port D and the second valve port C of the first regulating valve 102, then enters the outdoor heat exchanger 104, then enters the first throttle valve 105, and then enters the subcooler 107, then enters the first pipeline 3, then enters the fourth throttle valve 206, then enters the inlet of the accumulator 201, then flows out of the outlet of the accumulator 201, then enters the heat release valve 210, then flows along the second gas pipe 203 to the third pipeline 5, then flows back to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101. The refrigerant in the second flow path of the subcooler 107 can come from the third pipeline 5.

[0310] The second route: the refrigerant flows out from the outlet of the compressor 101, then enters the first valve port D and the fourth valve port E of the second regulating valve 103, then enters the second pipeline 4, then flows to the heating valve 603, then flows along the third gas pipe 605, then enters the indoor heat exchanger 7, then enters the fifth throttle valve 701, then flows along the third liquid pipe 604, then enters the first pipeline 3, then enters the bypass valve 211, then enters the fourth throttle valve 206, and then merges with the refrigerant in the fourth throttle valve 206 in the first route.

[0311] In the cold storage and main heating mode (outdoor unit condensation), the accumulator 201 acts as an evaporator and can store cold through the accumulator 201. During peak electricity price periods, the accumulator 201 can release cold energy, thereby reducing the power consumption of the air-conditioning system during peak electricity price periods, achieving "peak shaving and valley filling" of electricity, and reducing the operating cost of the air conditioner. Part of the indoor heat exchanger 7 is used as an evaporator, and the other part of the indoor heat exchanger 7 is used as a condenser. This can realize the circulation of refrigerant between the indoor heat exchangers 7, reduce the energy consumption of the compressor, and have an energy-saving effect. The evaporation load of the indoor heat exchanger 7 as an evaporator is less than the condensation load of the indoor heat exchanger 7 as a condenser, thereby realizing main heating.

[0312] See also Figure 22 In some embodiments, the working mode of the air-conditioning system includes a supercooling release and full cooling mode; in the supercooling release and full cooling mode, the first regulating valve 102 is powered off, the second regulating valve 103 is 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 used as an evaporator.

[0313] The refrigerant flow path is as follows: the refrigerant flows out from the outlet of the compressor 101, then flows to the first valve port D and the second valve port C of the first regulating valve 102, flows to the outdoor heat exchanger 104, the first throttle valve 105, and then flows to the subcooler 107, then flows to the first pipeline 3, then flows to the first liquid pipe 204, and then flows to the cold release valve 207, then flows to the inlet of the accumulator 201, and then flows out from the outlet of the accumulator 201, then flows along the first pipeline 3, then along the third liquid pipe 604, enters the fifth throttle valve 701, and then enters the indoor heat exchanger 7, then enters the third gas pipe 605, then enters the refrigeration valve 602, then enters the third pipeline 5, then returns to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0314] In the supercooling and full cooling mode, the accumulator 201 can supercool the refrigerant through the cold energy stored therein, further reducing the temperature of the refrigerant and the cooling capacity without increasing the energy consumption of the compressor. It is suitable for peak electricity price periods and can reduce the power consumption of the air-conditioning system during peak electricity price periods, thereby achieving "peak shaving and valley filling" of electricity and reducing the operating costs of the air conditioner.

[0315] See also Figure 23 In some embodiments, the working mode of the air-conditioning system includes a supercooling release and main cooling mode; in the supercooling release and main cooling mode, the first regulating valve 102 is powered off and the second regulating valve 103 is powered on, the outdoor heat exchanger 104 is used as a condenser, the accumulator 201 is used as a supercooler, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser; the evaporation load of the indoor heat exchanger 7 used as an evaporator is greater than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0316] The refrigerant flow path is as follows: the refrigerant of the compressor 101 is divided into two paths.

[0317] The first route: the refrigerant flows out from the outlet of the compressor 101, then enters the first valve port D and the second valve port C of the first regulating valve 102, then enters the outdoor heat exchanger 104, and then enters the first throttle valve 105, then enters the subcooler 107, then enters the first pipeline 3, flows along the cold release valve 207 to the inlet of the accumulator 201, then flows out from the outlet of the accumulator 201, then enters the third throttle valve 209, then enters the first pipeline 3, then enters the first branch 3' corresponding to part of the indoor heat exchanger 7, then enters the third liquid pipe 604, then enters the fifth throttle valve 701, then enters the indoor heat exchanger 7, then enters the third gas pipe 605, then enters the refrigeration valve 602, then enters the third pipeline 5, returns to the gas-liquid separator 108, and then returns to the inlet of the compressor 101.

[0318] Second Path: The refrigerant flows out of the compressor 101 outlet, enters the first valve port D and the fourth valve port E of the second regulating valve 103, and then enters the second pipeline 4. It then flows along the second branch 4' corresponding to the indoor heat exchanger 7, enters the heating valve 603, enters the third gas pipe 605, enters the indoor heat exchanger 7, enters the fifth throttle valve 701, enters the third liquid pipe 604, and finally enters the first branch 3'. The refrigerant in the first branch 3' can merge with the refrigerant in the first pipeline 3 and then flow to the desired indoor heat exchanger 7.

[0319] In the supercooling and main cooling mode, the accumulator 201 can supercool the refrigerant through the cold energy stored therein, further reducing the temperature of the refrigerant and the cooling capacity without increasing the energy consumption of the compressor. It is suitable for peak electricity price periods and can reduce the power consumption of the air-conditioning system during peak electricity price periods, achieving "peak shaving and valley filling" of electricity and reducing the operating cost of the air conditioner. Part of the indoor heat exchanger 7 is used as an evaporator, and the other part of the indoor heat exchanger 7 is used as a condenser, which can realize the refrigerant circulation between the indoor heat exchangers 7, reduce the energy consumption of the compressor, and have an energy-saving effect. The evaporation load of the indoor heat exchanger 7 as an evaporator is greater than the condensation load of the indoor heat exchanger 7 as a condenser, realizing main cooling.

[0320] See also Figure 24 In some embodiments, the working mode of the air-conditioning system includes a condensing cooling and full cooling mode; in the cooling and full cooling 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 a condenser, and the indoor heat exchanger 7 is used as an evaporator.

[0321] The refrigerant flows along the following path: the refrigerant flows out from the outlet of the compressor 101, then enters the first valve port D and the fourth valve port E of the second regulating valve 103, then flows along the second pipeline 4, then flows to the first air pipe 202, then flows to the high-pressure air valve 208, then enters the inlet of the accumulator 201, flows out from the outlet of the accumulator 201, then enters the first pipeline 3, then flows to the third liquid pipe 604, then flows to the fifth throttle valve 701, then enters the indoor heat exchanger 7, then flows to the third air pipe 605, then flows to the refrigeration valve 602, then enters the third pipeline 5, returns to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0322] The condensation state of the accumulator 201 can be further divided into condensation (releasing cold) and condensation (storing heat). The difference between these two states lies in the different pre-conditions of the accumulator 201 and their purposes. The purpose of condensation (releasing cold) is to release cold, while the mode of condensation (storing heat) is to store heat. Condensation (releasing cold) is equivalent to releasing cold through condensation (releasing cold). Condensation (storing heat) is when no cold or heat has been stored in the accumulator 201 before, and heat is stored in the accumulator 201 through condensation (storing heat).

[0323] The accumulator 201 can enter the condensation (cold release) state only after it has stored cold. At this time, high-temperature and high-pressure refrigerant enters the accumulator 201, absorbs the cold stored in the accumulator 201, and evaporates, thereby shouldering part or all of the condensation load of the refrigeration cycle. When the accumulator 201 has not yet stored cold or heat, it can enter the condensation (heat storage) state. At this time, high-temperature and high-pressure refrigerant enters the accumulator 201 and stores heat in the accumulator 201 in preparation for the next heat release.

[0324] Cold and heat storage are used during nighttime periods when electricity prices are low, while cold and heat release are used during periods of high electricity prices. When electricity prices are high, cold release is used to release stored cooling energy to the air conditioning system, while heat release is used to release stored heat to the air conditioning system, reducing system power consumption.

[0325] When there's a need to significantly reduce power consumption within a short period of time, the condensing cooling function can be used. This means the accumulator alone serves as the condenser, rather than the outdoor heat exchanger. Because the temperature of the stored cold energy material in the accumulator is low, far below the outdoor ambient temperature, the compressor doesn't need to apply excessive pressure, allowing the system to operate at a low compression ratio, significantly reducing energy consumption. Furthermore, heat conduction between the low-temperature energy storage material and the refrigerant replaces the air-cooled heat exchange of the outdoor heat exchanger, improving heat exchange efficiency. In heating mode, the accumulator can also be used alone as the evaporator in conjunction with the indoor heat exchanger to form a refrigeration cycle, reducing energy consumption and improving efficiency.

[0326] See also Figure 25 In some embodiments, the working mode of the air-conditioning system includes a condensing cooling and main cooling mode; in the condensing cooling and main cooling 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 a condenser, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser, and the evaporation load of the indoor heat exchanger 7 used as an evaporator is greater than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0327] The refrigerant flows along the following path: the refrigerant flows out from the outlet of the compressor 101, then enters the first valve port D and the fourth valve port E of the second regulating valve 103, then enters the second pipeline 4, and then is divided into two paths.

[0328] The first route: the refrigerant flows along the first gas pipe 202, then flows to the high-pressure gas valve 208, then flows to the inlet of the accumulator 201, then flows out along the outlet of the accumulator 201, then flows along the third throttle valve 209, then enters the first pipeline 3, then enters the third liquid pipe 604, then enters the fifth throttle valve 701, then enters the indoor heat exchanger 7, then flows along the third gas pipe 605, then enters the refrigeration valve 602, then flows along the third pipeline 5, flows to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0329] Second route: The refrigerant enters the heating valve 603, flows along the third gas pipe 605, enters the indoor heat exchanger 7, flows to the fifth throttle valve 701, enters the third liquid pipe 604, and then enters the first pipeline 3. It then merges with the refrigerant in the first pipeline 3 of the first route.

[0330] In the condensation and cooling mode, the outdoor heat exchanger 104 is not working, the accumulator 201 is used as a condenser, and part of the indoor heat exchanger 7 is used as an evaporator. Refrigerant circulation is achieved between the accumulator 201 and part of the indoor heat exchanger 7, and the accumulator 201 releases cold. At this time, due to the low temperature of the accumulator 201, the system can operate under low pressure ratio conditions, which significantly reduces the frequency and power consumption of the compressor. This is suitable for peak electricity price periods and can significantly reduce the power consumption of the air conditioning system during peak electricity price periods, achieving "peak shaving and valley filling" of electricity and reducing the operating cost of the air conditioner. Part of the indoor heat exchanger 7 is used as an evaporator, and the other part of the indoor heat exchanger 7 is used as a condenser. This can achieve refrigerant circulation between the indoor heat exchangers 7, reduce compressor energy consumption, and have an energy-saving effect. The evaporation load of the indoor heat exchanger 7 used as an evaporator is greater than the condensation load of the indoor heat exchanger 7 used as a condenser, achieving main cooling.

[0331] See also Figure 26 In some embodiments, the working mode of the air-conditioning system includes a parallel cooling and full cooling mode; in the parallel cooling and full cooling mode, the first regulating valve 102 is powered off and the second regulating valve 103 is powered on, 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.

[0332] The cold air from the compressor 101 is divided into two paths: one path flows through the second regulating valve 103 , and the other path flows through the first regulating valve 102 .

[0333] The first route: the refrigerant flows out from the outlet of the compressor 101, then flows to the first valve port D and the fourth valve port E of the second regulating valve 103, then flows along the second pipeline 4, then enters the high-pressure gas valve 208 along the first air pipe 202, then enters the inlet of the accumulator 201, then flows out from the outlet of the accumulator 201, and then enters the third throttle valve 209, and then continues to flow along the first pipeline 3, then enters the third branch 3', then flows along the third liquid pipe 604 to the fifth throttle valve 701, and then enters the indoor heat exchanger 7, then flows out from the third air pipe 605, enters the refrigeration valve 602, and then returns to the third branch 5'. The refrigerant in the third branch 5' corresponding to the indoor heat exchanger 7 of the same mode is all merged into the third pipeline 5, then returns to the gas-liquid separator 108, and finally flows back to the inlet of the compressor 101.

[0334] Second route: The refrigerant flows out from the outlet of the compressor 101, then enters the first valve port D and the second valve port C of the first regulating valve 102, then enters the outdoor heat exchanger 104, then enters the first throttle valve 105, then enters the subcooler 107, and then flows along the first pipeline 3 and merges with the refrigerant in the first pipeline 3 in the above-mentioned first route.

[0335] In the parallel cold release and full cooling mode, the accumulator 201 and the outdoor heat exchanger 104 both act as condensers and release cold in parallel. The cold capacity in the accumulator 201 is stored during the off-peak electricity price period. During the peak electricity price period, the cold capacity can be released through the accumulator 201, thereby reducing the power consumption of the air-conditioning system during the peak electricity price period, realizing the "peak shaving and valley filling" of electricity, and reducing the operating cost of the air conditioner.

[0336] See also Figure 27 In some embodiments, the working mode of the air-conditioning system includes a parallel cooling and main cooling mode; in the parallel cooling and main cooling mode, the first regulating valve 102 is powered off and the second regulating valve 103 is powered on, the outdoor heat exchanger 104 is used as a condenser, the accumulator 201 is used as a condenser, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser, and the evaporation load of the indoor heat exchanger 7 used as an evaporator is greater than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0337] The refrigerant of the compressor 101 is divided into two paths, one path flows along the first regulating valve 102, and the other path flows along the second regulating valve 103. The details are as follows.

[0338] The first route: The refrigerant flows out from the outlet of the compressor 101, then enters the first valve port D and the second valve port C of the first regulating valve 102, enters the outdoor heat exchanger 104, then flows along the first throttle valve 105 and the subcooler 107 to the first pipeline 3, then enters the first branch 3', then enters the third liquid pipe 604, enters the fifth throttle valve 701, and then enters the indoor heat exchanger 7, then flows out to the third gas pipe 605, then enters the refrigeration valve 602, then along the third pipeline 5, returns to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0339] The second route: the refrigerant flows out from the outlet of the compressor 101, then enters the first valve port D and the fourth valve port E of the second regulating valve 103, then enters the second pipeline 4, then enters the second branch 4', then enters the heating valve 603, then flows into the indoor heat exchanger 7 along the third gas pipe 605, then flows out to the fifth throttle valve 701, then enters the first branch 3' along the third liquid pipe 604, and then the refrigerant in the first branch 3' corresponding to the indoor heat exchanger 7 with the same working mode is aggregated to the first pipeline 3, and then merged with the refrigerant in the first pipeline 3 introduced in the first route to realize the refrigerant circulation between each indoor heat exchanger 7, which is also called the partial internal circulation of the indoor unit.

[0340] In the parallel cold release and main cooling mode, the accumulator 201 and the outdoor heat exchanger 104 both act as condensers, releasing cold in parallel, and the cold capacity in the accumulator 201 is stored during the off-peak electricity price period. During the peak electricity price period, the cold capacity can be released through the accumulator 201, thereby reducing the power consumption of the air-conditioning system during the peak electricity price period, achieving "peak shaving and valley filling" of electricity, and reducing the operating cost of the air conditioner. Part of the indoor heat exchanger 7 is used as an evaporator, and the other part of the indoor heat exchanger 7 is used as a condenser. The refrigerant circulation between the indoor heat exchangers 7 can be realized, reducing the energy consumption of the compressor and achieving energy-saving effects. The evaporation load of the indoor heat exchanger 7 as an evaporator is greater than the condensation load of the indoor heat exchanger 7 as a condenser, realizing main cooling.

[0341] See also Figure 28 In some embodiments, the operating mode of the air-conditioning system includes a conventional full heating mode; in the conventional full 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.

[0342] The refrigerant flows as follows: the refrigerant flows out of the outlet of the compressor 101, then enters the first valve port D and the fourth valve port E of the second regulating valve 103, then enters the second pipeline 4, then enters the second branch 4', then enters the heating valve 603, then enters the third gas pipe 605, then enters the indoor heat exchanger 7, then enters the fifth throttle valve 701, then flows along the third liquid pipe 604 to the first branch 3'. The refrigerant in the first branch 3' corresponding to each indoor heat exchanger 7 in the same operating mode is then combined into the first pipeline 3, then flows to the bypass valve 211, then enters the first flow channel of the subcooler 107, then enters the first throttle valve 105, then enters the outdoor heat exchanger 104, then enters the second valve port C and the third valve port S of the first regulating valve 102, then returns to the gas-liquid separator 108, and finally returns to the compressor 101. The refrigerant in the second flow channel of the indoor heat exchanger 7 is the refrigerant flowing out of the first regulating valve 102.

[0343] The conventional full heating mode is the same as the heating mode of the air conditioner in the prior art. The accumulator 201 is in a non-working state, the outdoor heat exchanger 104 is used as an evaporator, and the indoor heat exchanger 7 is used as a condenser to achieve heating.

[0344] See also Figure 29 In some embodiments, the operating mode of the air-conditioning system includes a conventional main heating mode; in the conventional main 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, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser; the evaporation load of the indoor heat exchanger 7 used as an evaporator is less than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0345] The refrigerant flow path is as follows: the refrigerant flows out of the outlet of the compressor 101, then flows along the first valve port D and the fourth valve port E of the second regulating valve 103, enters the second pipeline 4, then enters the second branch 4', then enters the heating valve 603, then enters the third gas pipe 605, then enters the indoor heat exchanger 7, then flows to the fifth throttle valve 701, and then enters the third liquid pipe 604. Then, the refrigerant in the first branch 3' corresponding to each indoor heat exchanger 7 in the same operating mode is collected into the first pipeline 3, then flows to the bypass valve 211, enters the first flow channel of the subcooler 107, the first throttle valve 105, then enters the outdoor heat exchanger 104, then flows to the second valve port C and the third valve port S of the first regulating valve 102, returns to the gas-liquid separator 108, and finally returns to the compressor 101. The refrigerant in the second flow channel of the subcooler 107 comes from the refrigerant flowing out of the first regulating valve 102.

[0346] It should be noted that in this mode, as needed, the refrigerant in the first pipeline 3 can also flow to some indoor heat exchangers 7, and then flow out from the third branch 5' corresponding to this or these indoor heat exchangers 7, and finally be collected in the third pipeline 5, and then return to the gas-liquid separator 108, and finally return to the compressor 101.

[0347] In conventional main heating mode, accumulator 201 is inactive and has no energy storage effect. Outdoor heat exchanger 104 functions as an evaporator, while some indoor heat exchangers 7 function as evaporators and others as condensers. This allows refrigerant to circulate between indoor heat exchangers 7, reducing compressor energy consumption and achieving energy savings. Furthermore, the evaporation load of the indoor heat exchanger 7 acting as an evaporator is lower than the condensation load of the indoor heat exchanger 7 acting as a condenser, primarily achieving heating.

[0348] See also Figure 30 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 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 not working.

[0349] The refrigerant flow path is as follows: the refrigerant flows out of the outlet of the compressor 101, then enters the first valve port D and the fourth valve port E of the second regulating valve 103, then enters the second pipeline 4, then enters the second branch 4', then enters the first gas pipe 202, then enters the high-pressure gas valve 208, then enters the inlet of the accumulator 201, then flows out from the outlet of the accumulator 201, then flows along the second liquid pipe 205 through the third throttle valve 209, then enters the bypass valve 211, then flows into the subcooler 107, then enters the first throttle valve 105, then flows to the outdoor heat exchanger 104, then enters the second valve port C and the third valve port S of the first regulating valve 102, returns to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101. The refrigerant in the second flow channel of the subcooler 107 comes from the refrigerant flowing out of the first regulating valve 102.

[0350] In the full heat storage mode, the indoor heat exchanger 7 is not working, the outdoor heat exchanger 104 is used as an evaporator, and the accumulator 201 is used as a condenser. It is suitable for off-peak electricity price periods. Heat is stored through the accumulator 201. When it is during peak electricity price periods, heat can be released through the accumulator 201, thereby reducing the power consumption of the air-conditioning system during peak electricity price periods, achieving "peak shaving and valley filling" of electricity, and reducing the operating costs of the air conditioner.

[0351] See also Figure 31In some embodiments, the operating mode of the air-conditioning system includes a heat storage and full heating mode; in the heat storage and full 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.

[0352] In this mode, the refrigerant flow path is still divided into two branches, and the refrigerant in these two branches is the refrigerant flowing out of the second regulating valve 103. Specifically, the refrigerant flows according to the following path: the refrigerant flows out of the outlet of the compressor 101, then enters the first valve port D and the fourth valve port E of the second regulating valve 103, and then enters the second pipeline 4, and then splits into two paths.

[0353] Route 1: The refrigerant in the second pipeline 4 enters the second branch 4', then enters the heating valve 603, then flows along the third gas pipe 605 into the indoor heat exchanger 7, then enters the fifth throttle valve 701, and then flows along the third liquid pipe 604 into the first branch 3'. The refrigerant corresponding to each indoor heat exchanger 7 in the same operating mode is then aggregated into the first pipeline 3, flows to the bypass valve 211, and then flows into the first flow channel of the subcooler 107, then enters the first throttle valve 105, then enters the outdoor heat exchanger 104, and then enters 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 inlet of the compressor 101. The refrigerant in the second flow channel of the subcooler 107 comes from the refrigerant flowing out of the first regulating valve 102.

[0354] Second route: The refrigerant enters the first air pipe 2 from the second pipeline 4, then goes along the first air pipe 202, enters the high-pressure air valve 208, then enters the inlet of the accumulator 201, then flows out from the outlet of the accumulator 201, and then flows to the bypass valve 211, and overlaps with the refrigerant in the first pipeline 3 of the first route.

[0355] In the heat storage and full heating mode, which is also applicable to off-peak electricity price periods, the accumulator 201 and the indoor heat exchanger 7 are both used as condensers. While heating, heat is stored through the accumulator 201. When it is during peak electricity price periods, heat can be released through the accumulator 201, thereby reducing the power consumption of the air-conditioning system during peak electricity price periods, realizing "peak shaving and valley filling" of electricity, and reducing the operating cost of the air conditioner.

[0356] See also Figure 32 In some embodiments, the operating mode of the air-conditioning system includes a heat storage and full cooling mode (outdoor evaporation); in the heat storage and full cooling mode (outdoor evaporation), 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 an evaporator.

[0357] The flow path of the refrigerant is: the refrigerant flows out from the outlet of the compressor 101, then enters the first valve port D and the fourth valve port E of the second regulating valve 103, then enters the second pipeline 4, then enters the first air pipe 202, then enters the high-pressure air valve 208, then enters the inlet of the accumulator 201, then flows out from the outlet of the accumulator 201, enters the third throttle valve 209, and then enters the first pipeline 3.

[0358] The refrigerant coming out of the third throttle valve 209 has two flow directions, one flowing to the indoor heat exchanger 7 and the other flowing to the subcooler 7 .

[0359] Path 1: After exiting third throttle valve 209, a portion of the refrigerant enters first branch 3', then flows into third liquid pipe 604, fifth throttle valve 701, and finally into indoor heat exchanger 7. It then flows through third gas pipe 605, refrigeration valve 602, and into third branch 5'. The refrigerant in first branch 5' corresponding to indoor heat exchangers 7 operating in the same mode is combined in third pipe 5, flows to gas-liquid separator 108, and finally returns to the inlet of compressor 101.

[0360] Second route: After flowing out of third throttle valve 209, another portion of the refrigerant flows through bypass valve 211 and then flows into the first flow channel of subcooler 107. It then enters first throttle valve 105, outdoor heat exchanger 104, second valve port C, and third valve port S of first regulating valve 102, flows into gas-liquid separator 108, and finally returns to the inlet of compressor 101. The refrigerant in the second flow channel of subcooler 107 can be the refrigerant flowing out of first regulating valve 102.

[0361] In the heat storage and complete cooling mode (outdoor unit evaporation), the indoor heat exchanger 7 is used as an evaporator to achieve complete cooling, and the accumulator 201 is used as a condenser to achieve heat storage. Refrigerant circulation can be achieved between the indoor heat exchanger 7 and the accumulator 201, storing energy while reducing the energy consumption of the compressor.

[0362] See also Figure 33 In some embodiments, the working mode of the air-conditioning system includes a heat storage and full cooling mode (outdoor unit condensation); in the heat storage and full cooling mode (outdoor unit condensation), the first regulating valve 102 is powered off and the second regulating valve 103 is powered on, 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.

[0363] The refrigerant from the compressor 101 is divided into two paths, one path flows to the first regulating valve 102 , and the other path flows to the second regulating valve 103 .

[0364] Route 1: The refrigerant flows out of the outlet of compressor 101 and flows to the first valve port D and second valve port C of the first regulating valve 102. It then sequentially enters the outdoor heat exchanger 104, the first throttle valve 105, the subcooler 107, the first pipeline 3, the bypass valve 211, and the first pipeline 3. It then enters the first branch 3' corresponding to the indoor heat exchanger 7, the third liquid pipe 604, the fifth throttle valve 701, the indoor heat exchanger 7, the third gas pipe 605, the cooling valve 602, and the third branch 5'. The refrigerant in the third branch 5' corresponding to the indoor heat exchanger 7 in the same operating mode is then collected and fed into the third pipeline 5. The refrigerant then flows along the third pipeline 5 back to the gas-liquid separator 108 and finally returns to the inlet of the compressor 101.

[0365] Second route: The refrigerant flows out from the outlet of the compressor 101, then enters the first valve port D and the fourth valve port E of the second regulating valve 103, then flows along the second pipeline 4, the first air pipe 202, the high-pressure air valve 208, flows to the inlet of the accumulator 201, the outlet of the accumulator 201, and then along the second liquid pipe 205, enters the first pipeline 3, and overlaps with the refrigerant in the first pipeline 3 described in the first route.

[0366] In the heat storage and full cooling mode (outdoor unit condensation), the accumulator 201 acts as a condenser and can store heat through the accumulator 201 while cooling. During peak electricity price periods, the accumulator 201 can release heat, thereby reducing the power consumption of the air-conditioning system during peak electricity price periods, achieving "peak shaving and valley filling" of electricity, and reducing the operating cost of the air conditioner.

[0367] See also Figure 34 In some embodiments, the working mode of the air-conditioning system includes a heat storage and main heating mode; in the heat storage and main 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, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser, and the evaporation load of the indoor heat exchanger 7 used as an evaporator is less than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0368] The refrigerant flows out of the outlet of the compressor 101, then enters the first valve port D, the fourth valve port E, and the second pipeline 4 of the second regulating valve 103. It then enters the second branch 4', the heating valve 603, the third gas pipe 605, the indoor heat exchanger 7, the fifth throttle valve 701, and the third liquid pipe 604, before flowing to the corresponding first branch 3'. The refrigerant in the first branch 3' corresponding to the indoor heat exchanger 7 in the same operating mode is all collected in the first pipeline 3, then flows sequentially through the bypass valve 211, the subcooler 107, the first throttle valve 105, the outdoor heat exchanger 104, and enters 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 inlet of the compressor 101. The refrigerant in the second flow channel of the subcooler 107 comes from the refrigerant flowing out of the first regulating valve 102.

[0369] In the heat storage and main heating mode, the accumulator 201 acts as a condenser and can store heat through the accumulator 201. During peak electricity price periods, the accumulator 201 can release heat, thereby reducing the power consumption of the air-conditioning system during peak electricity price periods, achieving "peak shaving and valley filling" of electricity, and reducing the operating costs of the air conditioner. Some indoor heat exchangers 7 are used as evaporators, and other indoor heat exchangers 7 are used as condensers. This can realize the circulation of refrigerant between the indoor heat exchangers 7 and reduce the energy consumption of the compressor. It has an energy-saving effect. The evaporation load of the indoor heat exchanger 7 used as an evaporator is less than the condensation load of the indoor heat exchanger 7 used as a condenser, achieving main heating.

[0370] See also Figure 35 In some embodiments, the operating mode of the air-conditioning system includes a heat storage and main cooling mode (outdoor unit condensation); in the heat storage and main cooling mode (outdoor unit condensation), the first regulating valve 102 is powered off and the second regulating valve 103 is powered on, the outdoor heat exchanger 104 is used as a condenser, the accumulator 201 is used as a condenser, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser, and the evaporation load of the indoor heat exchanger 7 used as an evaporator is greater than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0371] The refrigerant flowing out of the compressor 101 is divided into two paths, one path flows to the first regulating valve 102 , and the other path flows to the second regulating valve 103 .

[0372] Route 1: Refrigerant flows from the outlet of compressor 101, sequentially passing through first valve port D and second valve port C of first regulating valve 102, outdoor heat exchanger 104, first throttle valve 105, subcooler 107, and bypass valve 211, continuing along first pipeline 3 toward indoor heat exchanger 7. Specifically, the refrigerant in first pipeline 3 flows through first branch 3', third liquid pipe 604, fifth throttle valve 701, indoor heat exchanger 7, third gas pipe 605, refrigeration valve 602, and into third branch 5'. Refrigerant in third branch 5' corresponding to indoor heat exchangers 7 operating in the same mode is combined into third pipeline 5, flows back to gas-liquid separator 108, and finally returns to the inlet of compressor 101.

[0373] Second Path: Refrigerant flows from the outlet of compressor 101, sequentially passing through first port D and fourth port E of second regulating valve 103, along second pipeline 4 into second branch 4', then through heating valve 603, third gas pipe 605, indoor heat exchanger 7, fifth throttle valve 701, third liquid pipe 604, and into first branch 3'. The refrigerant in first branch 3' corresponding to indoor heat exchangers 7 operating in the same mode is collected in first pipeline 3, then merges with the refrigerant in first pipeline 3 of the first path, entering another indoor heat exchanger 7, completing the refrigerant internal circulation.

[0374] In the heat storage and main cooling mode (outdoor unit condensation), the accumulator 201 acts as a condenser and can store heat through the accumulator 201. During peak electricity price periods, the accumulator 201 can release heat, thereby reducing the power consumption of the air conditioning system during peak electricity price periods, achieving "peak shaving and valley filling" of electricity, and reducing the operating costs of the air conditioner. In addition, part of the indoor heat exchanger 7 is used as an evaporator, and the other part of the indoor heat exchanger 7 is used as a condenser. This can realize the circulation of refrigerant between the indoor heat exchangers 7, reduce the energy consumption of the compressor, and have an energy-saving effect. The evaporation load of the indoor heat exchanger 7 used as an evaporator is greater than the condensation load of the indoor heat exchanger 7 used as a condenser, achieving main cooling.

[0375] See also Figure 36 In some embodiments, the operating mode of the air-conditioning system includes a heat storage and main cooling mode (outdoor unit evaporation); in the heat storage and main cooling mode (outdoor unit evaporation), 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, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser, and the evaporation load of the indoor heat exchanger 7 used as an evaporator is greater than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0376] After the refrigerant flowing out of the compressor 101 flows out of the second regulating valve 103, it is divided into two branches, one flowing to the accumulator 201 and the other flowing to the indoor heat exchanger 7. The details are as follows:

[0377] The refrigerant flows out from the outlet of the compressor 101 and then sequentially enters the first valve port D, the fourth valve port E, and the second pipeline 4 of the second regulating valve 103, and is then divided into two paths.

[0378] First route: The refrigerant flows sequentially through the first air pipe 202, the high-pressure air valve 208, the inlet of the accumulator 201, and the outlet of the accumulator 201, and then is divided into two branches.

[0379] First branch: The refrigerant flows sequentially through the first pipeline 3, the first branch 3', the third liquid pipe 604, the fifth throttle valve 701, the indoor heat exchanger 7, the third gas pipe 605, the refrigeration valve 602, and the third branch 5'. The refrigerant in the third branch 5' corresponding to the indoor heat exchanger 7 in the same operating mode is combined into the third pipeline 5, then returns to the gas-liquid separator 108 and finally returns to the inlet of the compressor 101.

[0380] Second branch: The refrigerant flows sequentially through the bypass valve 211, along the first pipeline 3 into the subcooler 107, the first throttle valve 105, the outdoor heat exchanger 104, the second valve port C and the third valve port S of the first regulating valve 102, then returns to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0381] Second Path: After flowing out of the first valve port D and the fourth valve port E of the second regulating valve 103, the refrigerant flows along the second pipeline 4, sequentially passing through the second branch 4', the heating valve 603, the third gas pipe 605, the indoor heat exchanger 7, the fifth throttle valve 701, the third liquid pipe 604, the first branch 3', and finally into the first pipeline 3. Here, the refrigerant in the third pipeline 3 merges with the first pipeline 3 entered by other routes, and then enters the other indoor heat exchanger 7, completing the internal circulation.

[0382] In the heat storage and main cooling mode (outdoor unit evaporation), the accumulator 201 acts as a condenser and can store heat through the accumulator 201. During peak electricity price periods, the accumulator 201 can release heat, thereby reducing the power consumption of the air-conditioning system during peak electricity price periods, achieving "peak shaving and valley filling" of electricity, and reducing the operating cost of the air conditioner. Part of the indoor heat exchanger 7 is used as an evaporator, and the other part of the indoor heat exchanger 7 is used as a condenser. This can realize the circulation of refrigerant between the indoor heat exchangers 7, reduce the energy consumption of the compressor, and have an energy-saving effect. The evaporation load of the indoor heat exchanger 7 as an evaporator is greater than the condensation load of the indoor heat exchanger 7 as a condenser, realizing main cooling.

[0383] See also Figure 37In some embodiments, the working mode of the air-conditioning system includes a mixed heat release and full heating mode; in the mixed heat release and full 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 an evaporator, and the indoor heat exchanger 7 is used as a condenser.

[0384] In this mode, the refrigerant flowing out of the compressor 101 is divided into two paths after passing through the indoor heat exchanger 7, one path flowing to the accumulator 201 and the other path flowing to the outdoor heat exchanger 104. The specific flow paths of the refrigerant are as follows.

[0385] The refrigerant flows out from the outlet of the compressor 101, and flows sequentially through the first valve port D of the second regulating valve 103, the fourth valve port E, the second pipeline 4, the second branch 4', the heating valve 603, the third gas pipe 605, the indoor heat exchanger 7, the fifth throttle valve 701, the third liquid pipe 604, the first branch 3', and is gathered to the first pipeline 3 and the bypass valve 211, after which the refrigerant is divided into two paths.

[0386] First route: The refrigerant flows along the first liquid pipe 204 , passes through the fourth throttle valve 206 , flows into the inlet of the accumulator 201 , the outlet of the accumulator 201 , the heat release valve 210 , flows back to the gas-liquid separator 108 , and finally returns to the inlet of the compressor 101 .

[0387] Second route: The refrigerant enters the first flow path of subcooler 107 along first pipeline 3, then flows sequentially through first throttle valve 105, outdoor heat exchanger 104, second valve port C, and third valve port S of first regulating valve 102, back to gas-liquid separator 108, and finally to the inlet of compressor 101. The refrigerant in the second flow path of subcooler 107 can be the refrigerant flowing out of first regulating valve 102.

[0388] In the mixed heat release and full heating mode, the outdoor heat exchanger 104 and the accumulator 201 are both used as evaporators, and the accumulator 201 can release heat to the refrigerant through the heat stored therein, reducing the evaporation load of the system, thereby reducing the energy consumption of the compressor. It is suitable for peak electricity price periods and can reduce the power consumption of the air-conditioning system during peak electricity price periods, realize "peak shaving and valley filling" of electricity, and reduce the operating cost of the air conditioner.

[0389] See also Figure 38 In some embodiments, the working mode of the air-conditioning system includes a mixed heat release and main heating mode; in the mixed heat release and main 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 an evaporator, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser, and the evaporation load of the indoor heat exchanger 7 used as an evaporator is less than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0390] In this mode, the refrigerant flows into the indoor heat exchanger 7 along the second pipe 4, and then flows out of the indoor heat exchanger 7 and is divided into two paths, one flowing to the accumulator 201 and the other flowing to the subcooler 107. The specific paths of the refrigerant are as follows.

[0391] The refrigerant flows out from the outlet of the compressor 101, then enters the first valve port D and the fourth valve port E of the second regulating valve 103, along the second pipeline 4 into the second branch 4', the heating valve 603, the third gas pipe 605, the indoor heat exchanger 7, the fifth throttle valve 701, the third liquid pipe 604, the first pipeline 3, the bypass valve 211, and then is divided into two routes.

[0392] The first route: enters the fourth throttle valve 206, flows sequentially through the inlet of the accumulator 201, the outlet of the accumulator 201, the heat release valve 210, along the second air pipe 203 into the gas-liquid separator 108, and then returns to the inlet of the compressor 101.

[0393] The second route: continues along the first pipeline 3, sequentially flows through the cooler 107, the first throttle valve 105, the outdoor heat exchanger 104, the second valve port C of the first regulating valve 102, the third valve port S, enters the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0394] In the mixed heat release and main heating mode, the outdoor heat exchanger 104 and the accumulator 201 are both used as evaporators. The accumulator 201 can release heat to the refrigerant through the heat stored therein, reducing the evaporation load of the system, thereby reducing the energy consumption of the compressor. It is suitable for peak electricity price periods and can reduce the power consumption of the air-conditioning system during peak electricity price periods, achieving "peak shaving and valley filling" of electricity and reducing the operating cost of the air conditioner. Part of the indoor heat exchanger 7 is used as an evaporator, and the other part of the indoor heat exchanger 7 is used as a condenser. The refrigerant circulation between the indoor heat exchangers 7 can be realized, reducing the energy consumption of the compressor and having an energy-saving effect. The evaporation load of the indoor heat exchanger 7 as an evaporator is less than the condensing load of the indoor heat exchanger 7 as a condenser, realizing main heating.

[0395] See also Figure 39 In some embodiments, the working mode of the air-conditioning system includes an independent heat release and full heating mode; in the independent heat release and full heating 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.

[0396] The refrigerant flow path is as follows: after flowing out of the compressor 101, the refrigerant flows sequentially through the first valve port D of the second regulating valve 103, the fourth valve port E, the second pipeline 4, the second branch 4', the heating valve 603, the third gas pipe 605, the indoor heat exchanger 7, the fifth throttle valve 701, the third liquid pipe 604, the first pipeline 3, the bypass valve 211, the first liquid pipe 204, the fourth throttle valve 206, the inlet of the accumulator 201, the outlet of the accumulator 201, the heat release valve 210, the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0397] In the independent heat release and full heating mode, the outdoor heat exchanger 104 does not work, the accumulator 201 is used as an evaporator, and the indoor heat exchanger 7 is used as a condenser. Refrigerant circulation is realized between the accumulator 201 and the indoor heat exchanger 7, and the accumulator 201 releases heat. The accumulator 201 utilizes the heat stored in the low electricity price stage, which will not increase the energy consumption of the compressor and is suitable for peak electricity price periods. At the same time, due to the high temperature in the accumulator, the system can operate under low pressure ratio conditions, so the speed of the compressor can be reduced during peak electricity price periods, thereby reducing the power consumption of the air-conditioning system, realizing "peak shaving and valley filling" of electricity, and reducing the operating cost of the air conditioner.

[0398] See also Figure 40 In some embodiments, the working mode of the air-conditioning system includes an independent heat release and main heating mode; in the independent heat release and main heating 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, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser, and the evaporation load of the indoor heat exchanger 7 used as an evaporator is less than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0399] The refrigerant flows along the following path: the refrigerant flows out from the outlet of the compressor 101, and then flows through the first valve port D of the second regulating valve 103, the fourth valve port E, the second pipeline 4, the second branch 4', the heating valve 603, the third air pipe 605, the indoor heat exchanger 7, the fifth throttle valve 701, the third liquid pipe 604, the first branch 3', the first pipeline 3, the bypass valve 211, and enters the fourth throttle valve 206 along the first liquid pipe 204, the inlet of the accumulator 201, the outlet of the accumulator 201, the heat release valve 210, the second air pipe 203, and continues along the third pipeline 5 to enter the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0400] In this mode, most of the fluid in the first pipeline 3 is the refrigerant that flows out of some indoor heat exchangers 7. In addition to flowing to the accumulator 201, it can also flow to other indoor heat exchangers 7. After heat exchange in these indoor heat exchangers 7, it flows out through the third branch 5' corresponding to these indoor heat exchangers 7, and then is collected in the third pipeline 5, and then returns to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0401] In independent heat release and main heating mode, the outdoor heat exchanger 104 is inactive, the accumulator 201 functions as an evaporator, and some of the indoor heat exchangers 7 function as condensers. Refrigerant circulates between the accumulator 201 and some of the indoor heat exchangers 7, releasing heat. The accumulator 201 utilizes heat stored during periods of low electricity prices, which does not increase compressor energy consumption and is suitable for peak electricity price periods. Furthermore, due to the higher temperature within the accumulator, the system can operate at a low pressure ratio, reducing the compressor speed during peak electricity price periods, thereby reducing the power consumption of the air conditioning system, achieving peak load shifting and valley filling, and lowering the operating costs of the air conditioner. With some of the indoor heat exchangers 7 functioning as evaporators and others as condensers, refrigerant circulation is achieved between the indoor heat exchangers 7, reducing compressor energy consumption and achieving energy conservation. The evaporation load of the indoor heat exchangers 7 acting as evaporators is lower than the condensation load of the indoor heat exchangers 7 acting as condensers, achieving main heating.

[0402] See also Figure 41 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 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.

[0403] The refrigerant flows along the following path: the refrigerant flows out of the compressor 101, and then flows sequentially through the first valve port D of the first regulating valve 102, the second valve port C, the outdoor heat exchanger 104, the first throttle valve 105, the subcooler 107, the first pipeline 3, the fourth throttle valve 206, the inlet of the accumulator 201, the outlet of the accumulator 201, the heat release valve 210, the second gas pipe 203, returns to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0404] In the discontinuous heating and defrosting mode, 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. The accumulator 201 can use the heat stored during the off-peak electricity price period to increase the temperature of the refrigerant to defrost the outdoor heat exchanger 104, reduce the energy consumption of the compressor, and have an energy-saving effect.

[0405] See also Figure 42In some embodiments, the working mode of the air-conditioning system includes a continuous heating, defrosting and full heating mode; in the continuous heating, defrosting and full heating mode, the first regulating valve 102 is powered off and 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.

[0406] The refrigerant flowing out of the compressor 101 is divided into two paths, one path flows to the first regulating valve 102 , and the other path flows to the second regulating valve 103 .

[0407] First route: The refrigerant flows out from the outlet of the compressor 101, passes through the first valve port D of the second regulating valve 103, the fourth valve port E, the second pipeline 4, the second branch 4', the heating valve 603, the third air pipe 605, the indoor heat exchanger 7, the fifth throttle valve 701, the third liquid pipe 604, the first pipeline 3, the bypass valve 211, the fourth throttle valve 206, the inlet of the accumulator 201, the outlet of the accumulator 201, the heat release valve 210, the second air pipe 203, the third pipeline 5, enters 108, and finally returns to the inlet of the compressor 101.

[0408] Second route: The refrigerant flows out from the outlet of the compressor 101, passes through the first valve port D of the first regulating valve 102, the second valve port C, the outdoor heat exchanger 104, the first throttle valve 105, the subcooler 107, the first pipeline 3, and then merges with the refrigerant in the first pipeline 3 introduced in the first route.

[0409] In the continuous heating, defrosting and complete heating mode, the indoor heat exchanger 7 is used as a condenser to achieve complete heating, the accumulator 201 is used as an evaporator, and refrigerant circulation can be achieved between the indoor heat exchanger 7 and the accumulator 201. The outdoor heat exchanger 104 is used as a condenser, and the refrigerant releases heat to it, which can achieve defrosting of the outdoor heat exchanger 104. Therefore, continuous heating, defrosting and complete heating can be achieved.

[0410] See also Figure 43 In some embodiments, the working mode of the air-conditioning system includes a continuous heating and defrosting and main heating mode; in the continuous heating and defrosting and main heating mode, the first regulating valve 102 is powered off and 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, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser, and the evaporation load of the indoor heat exchanger 7 used as an evaporator is less than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0411] The refrigerant flowing out of the compressor 101 is divided into two paths, one path flows to the outdoor heat exchanger 104 and the other path flows to the indoor heat exchanger 7.

[0412] First route: The refrigerant flows out of the compressor 101, passes through the first valve port D of the second regulating valve 103, the fourth valve port E, the second pipeline 4, the second branch 4' corresponding to part of the indoor heat exchanger 7, the heating valve 603, the third gas pipe 605, the indoor heat exchanger 7, the fifth throttle valve 701, the third liquid pipe 604, the first pipeline 3, the bypass valve 211, and then is divided into two branches.

[0413] First branch: The refrigerant flows along the first liquid pipe 204, sequentially through the fourth throttle valve 206, the inlet of the accumulator 201, the outlet of the accumulator 201, the heat release valve 210, the second gas pipe 203, back to the gas-liquid separator 108, and finally back to the inlet of the compressor 101.

[0414] Second branch: It should be noted that since there is refrigerant in the first pipeline 3, in addition to the flow pattern of the first branch, a portion of the refrigerant in the first pipeline 3 can flow into the first branches 3' corresponding to the remaining indoor heat exchangers 7, and then enter these indoor heat exchangers 7. Finally, it flows out from the third branches 5' corresponding to these indoor heat exchangers 7 and is collected in the third pipeline 5. It then flows back to the gas-liquid separator 108 and finally returns to the inlet of the compressor 101.

[0415] Second route: The refrigerant flows out from the outlet of the compressor 101, flows sequentially through the first valve port D and the second valve port C of the first regulating valve 102, the outdoor heat exchanger 104, the first throttle valve 105, the subcooler 107, and merges with the refrigerant in the first pipeline 3 of the first route of refrigerant.

[0416] In the continuous heating and defrosting mode and the main heating mode, part of the indoor heat exchanger 7 is used as a condenser to achieve partial continuous heating. The accumulator 201 is used as an evaporator, and refrigerant circulation can be achieved between part of the indoor heat exchanger 7 and the accumulator 201. The outdoor heat exchanger 104 is used as a condenser, and the refrigerant releases heat to it, which can achieve defrosting of the outdoor heat exchanger 104. Part of the indoor heat exchanger 7 is used as an evaporator, and the other part of the indoor heat exchanger 7 is used as a condenser. This allows refrigerant circulation between the indoor heat exchangers 7, reducing compressor energy consumption and achieving energy-saving effects. The evaporation load of the indoor heat exchanger 7 used as an evaporator is less than the condensing load of the indoor heat exchanger 7 used as a condenser, which can achieve main heating.

[0417] See also Figure 44 In some embodiments, the working mode of the air-conditioning system includes a continuous heating, defrosting and main cooling mode; in the continuous heating, defrosting and main cooling mode, the first regulating valve 102 is powered off and 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, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser, and the evaporation load of the indoor heat exchanger 7 used as an evaporator is greater than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0418] The refrigerant flowing out of the compressor 101 is divided into two paths: one path flows to the outdoor heat exchanger 104 through the first regulating valve 102, and the other path flows to the indoor heat exchanger 7 through the second regulating valve 103. Detailed description is as follows.

[0419] First route: The refrigerant flows out from the outlet of the compressor 101, flows sequentially through the first valve port D and the second valve port C of the first regulating valve 102, the outdoor heat exchanger 104, the first throttle valve 105, the subcooler 107, the first pipeline 3, and then is divided into two branches.

[0420] First branch: The refrigerant enters the first branch 3' along the first pipeline 3, flows sequentially through the third liquid pipe 604, the fifth throttle valve 701, the indoor heat exchanger 7, the third gas pipe 605, the refrigeration valve 602, the third branch 5', and finally converges in the third pipeline 5.

[0421] Second branch: The refrigerant flows along the first pipeline 3, sequentially through the fourth throttle valve 206, the inlet of the accumulator 201, the outlet of the accumulator 201, the heat release valve 210, the second air pipe 203, back to the gas-liquid separator 108, and finally back to the inlet of the compressor 101.

[0422] Second route: The refrigerant flows out of the compressor 101 outlet, flows sequentially through the first valve port D and the fourth valve port E of the second regulating valve 103, enters the second branch 4' along the second pipeline 4, flows sequentially through the heating valve 603, the third gas pipe 605, the indoor heat exchanger 7, the fifth throttle valve 701, the third liquid pipe 604, and the first branch 3' corresponding to the indoor heat exchanger 7, and then merges in the first pipeline 3. Since there is also refrigerant in the first pipeline 3 in the first refrigerant cycle, these two parts of refrigerant will merge, then enter the other indoor heat exchanger 7, and finally flow out of the third pipeline 5, return to the gas-liquid separator 108, and finally return to the inlet of the compressor 101.

[0423] In the continuous heating and defrosting mode with main cooling, part of the indoor heat exchanger 7 is used as a condenser to achieve partial continuous heating. The accumulator 201 is used as an evaporator, and refrigerant circulation can be achieved between part of the indoor heat exchanger 7 and the accumulator 201. The outdoor heat exchanger 104 is used as a condenser, and the refrigerant releases heat to it, which can achieve defrosting of the outdoor heat exchanger 104. Part of the indoor heat exchanger 7 is used as an evaporator, and the other part of the indoor heat exchanger 7 is used as a condenser. This allows refrigerant circulation between the indoor heat exchangers 7, reducing compressor energy consumption and achieving energy-saving effects. The evaporation load of the indoor heat exchanger 7 used as an evaporator is greater than the condensation load of the indoor heat exchanger 7 used as a condenser, which can achieve main cooling.

[0424] See also Figure 45In some embodiments, the operating mode of the air-conditioning system includes a conventional heat recovery mode; in the conventional heat recovery 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 not working, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser, and the evaporation load of the indoor heat exchanger 7 used as an evaporator is equal to the condensation load of the indoor heat exchanger 7 used as a condenser.

[0425] The refrigerant flow path is: the refrigerant flows out from the outlet of the compressor 101, and flows sequentially through the first valve port D of the second regulating valve 103, the fourth valve port E, the second pipeline 4, the second branch 4' corresponding to some indoor heat exchangers 7, the heating valve 603, the third gas pipe 605, the indoor heat exchanger 7, the fifth throttle valve 701, the third liquid pipe 604, the first branch 3', the first pipeline 3, and then flows into other indoor heat exchangers 7, and then flows out from the third branch 5' corresponding to these indoor heat exchangers 7, and then merges in the third pipeline 5, returns to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0426] In the conventional heat recovery mode, the outdoor heat exchanger 104 is not working, the accumulator 201 is not working, part of the indoor heat exchanger 7 is used as an evaporator, and the other part of the indoor heat exchanger 7 is used as a condenser, which can realize the refrigerant circulation between the indoor heat exchangers 7, reduce the energy consumption of the compressor, and realize heat recovery.

[0427] See also Figure 46 In some embodiments, the operating mode of the air-conditioning system includes a cold storage and heat recovery mode; in the cold storage and heat recovery 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, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser, and the evaporation load of the indoor heat exchanger 7 used as an evaporator is less than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0428] The refrigerant flows along the following path: it flows out of the compressor 101 outlet, sequentially passes through the first valve port D of the second regulating valve 103, the fourth valve port E, the second pipeline 4, the second branch 4', the heating valve 603, the third gas pipe 605, the indoor heat exchanger 7, the fifth throttle valve 701, the third liquid pipe 604, the first branch 3', and then merges with the first pipeline 3. It then splits into two branches.

[0429] First branch: A portion of the refrigerant in the first pipeline 3 flows sequentially to the bypass valve 211, along the first liquid pipe 204, sequentially to the fourth throttle valve 206, the inlet of the accumulator 201, the outlet of the accumulator 201, the heat release valve 210, along the second gas pipe 203, back to the gas-liquid separator 108, and back to the inlet of the compressor 101.

[0430] Second branch: another part of the refrigerant in the first pipeline 3 enters the other indoor heat exchanger 7, then flows out from the third pipeline 5, returns to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0431] In the cold storage and heat recovery mode, the outdoor heat exchanger 104 is not operating, the accumulator 201 serves as an evaporator, and the other part of the indoor heat exchanger 7 serves as a condenser. Refrigerant circulation is achieved between the accumulator 201 and the other part of the indoor heat exchanger 7, achieving heat recovery. Furthermore, by storing cold in the accumulator 201, during peak electricity price periods, the accumulator 201 can release cold energy, thereby reducing the power consumption of the air conditioning system during peak electricity price periods, achieving "peak shaving and valley filling" of electricity, and reducing the operating costs of the air conditioner. Furthermore, since some of the indoor heat exchangers 7 serve as evaporators and other part of the indoor heat exchangers 7 serve as condensers, refrigerant circulation can be achieved between the indoor heat exchangers 7, reducing compressor energy consumption and achieving energy-saving effects. The evaporation load of the indoor heat exchanger 7 serving as an evaporator is less than the condensation load of the indoor heat exchanger 7 serving as a condenser, achieving main heating.

[0432] See also Figure 47 In some embodiments, the operating mode of the air-conditioning system includes a heat storage and heat recovery mode; in the heat storage and heat recovery 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 a condenser, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser, and the evaporation load of the indoor heat exchanger 7 used as an evaporator is greater than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0433] In this mode, the refrigerant is divided into two paths after passing through the second regulating valve 103 , one path flows to the indoor heat exchanger 7 , and the other path flows to the accumulator 201 .

[0434] The refrigerant flows out from the outlet of the compressor 101 , then flows through the first valve port D and the fourth valve port E of the second regulating valve 103 , and then is divided into two paths.

[0435] The first route: the refrigerant enters the second branch 4' corresponding to a part of the indoor heat exchanger 7, and then flows through the heating valve 603, the third gas pipe 605, the indoor heat exchanger 7, the fifth throttle valve 701, the third liquid pipe 604, the first branch 3' in sequence, and then converges in the first pipe 3, and then enters the first branch 3' corresponding to other indoor heat exchangers 7, and then flows through the third liquid pipe 604, the fifth throttle valve 701, the indoor heat exchanger 7, the third gas pipe 605, the cooling valve 602, the third branch 5' in sequence, and then converges in the third pipe 5, and then returns to the gas-liquid separator 108 along the third pipe 5, and finally returns to the inlet of the compressor 101.

[0436] Second route: The refrigerant flows along the first air pipe 202, sequentially enters the high-pressure air valve 208, the inlet of the accumulator 201, the outlet of the accumulator 201, and enters the first pipeline 3, and merges with the refrigerant in the first pipeline 3 of the first route.

[0437] In the heat storage and heat recovery mode, the outdoor heat exchanger 104 is not working, the accumulator 201 serves as a condenser, and the other part of the indoor heat exchanger 7 serves as an evaporator. Refrigerant circulation is achieved between the accumulator 201 and the other part of the indoor heat exchanger 7 to achieve heat recovery. The accumulator 201 is used to store heat so that heat can be released during peak electricity price periods, thereby reducing the power consumption of the air-conditioning system during peak electricity price periods, achieving "peak shaving and valley filling" of electricity, and reducing the operating cost of the air conditioner. Part of the indoor heat exchanger 7 is used as an evaporator, and the other part of the indoor heat exchanger 7 is used as a condenser. This can achieve refrigerant circulation between the indoor heat exchangers 7, reduce compressor energy consumption, and have an energy-saving effect. The evaporation load of the indoor heat exchanger 7 serving as an evaporator is greater than the condensation load of the indoor heat exchanger 7 serving as a condenser, achieving main cooling.

[0438] See also Figure 48 In some embodiments, the working mode of the air-conditioning system includes a cooling and heat recovery mode; in the cooling and heat recovery 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 a condenser, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser, and the evaporation load of the indoor heat exchanger 7 used as an evaporator is greater than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0439] The refrigerant flows out from the outlet of the compressor 101 , then flows along the first valve port D and the fourth valve port E of the second regulating valve 103 , into the second pipeline 4 , and then is divided into two paths.

[0440] First route: The refrigerant flows along the second pipeline 4, sequentially to the second branch 4' corresponding to some indoor heat exchangers 7, the heating valve 603, the third gas pipe 605, the indoor heat exchanger 7, the fifth throttle valve 701, the third liquid pipe 604, the first branch 3', and then converges in the first pipeline 3.

[0441] Here, the refrigerant that converges in the first pipeline 3 flows together to the first branch 3' corresponding to the other indoor heat exchanger 7 after merging, and then flows sequentially to the third liquid pipe 604, the fifth throttle valve 701, the indoor heat exchanger 7, the third gas pipe 605, the refrigeration valve 602, the third branch 5', and then converges in the third pipeline 5, and then returns to the gas-liquid separator 108, and finally returns to the inlet of the compressor 101.

[0442] Second route: The refrigerant flows along the first air pipe 202, sequentially through the high-pressure air valve 208, the inlet of the accumulator 201, the outlet of the accumulator 201, the third throttle valve 209, and then flows to the first pipeline 3, that is, merges with the refrigerant in the first pipeline 3 in the first route.

[0443] In the cooling and heat recovery mode, the outdoor heat exchanger 104 is not working, the accumulator 201 acts as a condenser, and the other part of the indoor heat exchanger 7 acts as an evaporator. Refrigerant circulation is achieved between the accumulator 201 and the other part of the indoor heat exchanger 7 to achieve heat recovery. Moreover, the accumulator 201 acts as a condenser, which can release the cold energy stored during the off-peak electricity price period, which is suitable for the peak electricity price period, thereby reducing the power consumption of the air-conditioning system during the peak electricity price period, achieving "peak shaving and valley filling" of electricity, and reducing the operating cost of the air conditioner. Moreover, part of the indoor heat exchanger 7 is used as an evaporator, and the other part of the indoor heat exchanger 7 is used as a condenser, which can realize the circulation of refrigerant between the indoor heat exchangers 7, reduce the energy consumption of the compressor, and have an energy-saving effect. The evaporation load of the indoor heat exchanger 7 as an evaporator is greater than the condensation load of the indoor heat exchanger 7 as a condenser, achieving main cooling.

[0444] See also Figure 49 In some embodiments, the working mode of the air-conditioning system includes a heat release and heat recovery mode; in the cool release and heat recovery 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, part of the indoor heat exchanger 7 is used as an evaporator, and the remaining indoor heat exchanger 7 is used as a condenser. The evaporation load of the indoor heat exchanger 7 used as an evaporator is less than the condensation load of the indoor heat exchanger 7 used as a condenser.

[0445] The refrigerant flows along the following path: the refrigerant flows out from the outlet of the compressor 101, then enters the first valve port D and the fourth valve port E of the second regulating valve 103, flows to the second pipeline 4, and then flows to the second branch 4' corresponding to a part of the indoor heat exchanger 7, and then flows in sequence to the heating valve 603, the third gas pipe 605, the indoor heat exchanger 7, the fifth throttle valve 701, the third liquid pipe 604, the first branch 3' corresponding to this part of the indoor heat exchanger 7, and then converges in the first pipeline 3.

[0446] A portion of the merged fluid enters the other indoor heat exchanger 7, and then flows sequentially through the third liquid pipe 604, the fifth throttle valve 701, the indoor heat exchanger 7, the third gas pipe 605, the refrigeration valve 602, the third pipeline 5, returns to the gas-liquid separator 108, and returns to the inlet 101a of the compressor 101.

[0447] The other part of the merged fluid returns to the bypass valve 211, the first liquid pipe 204, the fourth throttle valve 206, the inlet of the accumulator 201, the outlet of the accumulator 201, the heat release valve 210, the second gas pipe 203, along the third pipeline 5, back to the gas-liquid separator 108, and finally back to the inlet 101a of the compressor 101.

[0448] In the heat release and heat recovery mode, the outdoor heat exchanger 104 is not operating, the accumulator 201 acts as an evaporator, and the other part of the indoor heat exchanger 7 acts as a condenser. Refrigerant circulation is achieved between the accumulator 201 and the other part of the indoor heat exchanger 7, achieving heat recovery. Furthermore, the accumulator 201, acting as an evaporator, can release the heat stored during off-peak electricity price periods, making it suitable for use during peak electricity price periods. This can reduce the power consumption of the air conditioning system during peak electricity price periods, achieving "peak shaving and valley filling" of electricity, and reducing the operating costs of the air conditioner. Furthermore, with some indoor heat exchangers 7 acting as evaporators and other indoor heat exchangers 7 acting as condensers, refrigerant circulation can be achieved between the indoor heat exchangers 7, reducing compressor energy consumption and achieving energy-saving effects. The evaporation load of the indoor heat exchanger 7 acting as an evaporator is less than the condensation load of the indoor heat exchanger 7 acting as a condenser, achieving main heating.

[0449] The air-conditioning system provided by the embodiment of the present invention has multiple indoor heat exchangers 7, and can simultaneously realize the cooling function in some of the connected indoor heat exchangers 7 and the heating function in another part of the connected indoor heat exchangers 7. Based on the heat recovery model, the air-conditioning system provided by the technical solution of the present invention can realize 37 modes such as complete cold storage, cold storage and complete cooling, cold storage and main body cooling. It meets the different needs of users, broadens the scope of use of the air-conditioning system, and greatly improves the availability of the air-conditioning system. Moreover, the air-conditioning system designed by the present invention has streamlined pipelines and lower costs, and can provide energy storage and energy release services for a variety of different power load transfer scenarios.

[0450] See also Figure 50 Another embodiment of the present invention provides an air conditioning system. This system differs from the aforementioned embodiments in that the connection location of first air pipe 202 is slightly different. In this embodiment, one end of first air pipe 202 is directly connected to the outlet of compressor 101. This connection does not change the functionality of the air conditioning system or its valve control method. The system still implements the 37 functions described above.

[0451] This solution features a shorter first air pipe 202, significantly reducing piping material when the outdoor unit 1 and energy storage device 2 are installed far apart. Compared to the solutions in the aforementioned embodiments, since the first air pipe 202 is installed between the compressor 101 and the second regulating valve 103, the high-pressure air valve 208 can be opened before the second regulating valve 103 completes its reversal, allowing the refrigerant to flow through the first air pipe 202. This improves the response speed of the energy storage device 201. Therefore, of these two solutions, the first one saves piping material, while the second one offers a faster response.

[0452] See also Figures 51 to 53 Another embodiment of the present invention further provides an air conditioning system, which is different from the various embodiments described above in that a storage container 220 is provided in this embodiment.

[0453] A storage container 220 is added on the basis of the energy storage system. The storage container 220 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.

[0454] The storage container 220 has three ports. 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 gas pipe 202 via a pressurizing valve 222 and to the third pipeline 5 via a capillary tube 225 and a gas balance valve 224. The first outlet 220c is connected to the third pipeline 5 via a capillary tube 225 and a liquid drain valve 223.

[0455] Figure 52 The flow path of the refrigerant stored in the storage container 220 is shown. Figure 53 The flow path of the refrigerant released from the storage container 220 is shown.

[0456] The storage container 220 has three states: not working, storing refrigerant and releasing refrigerant. These three states can be used in different system modes (conventional refrigeration, complete cold storage, etc.).

[0457] The first type is that when not in operation, the liquid inlet valve 221, the pressure valve 222, the liquid discharge valve 223, and the gas balance valve 224 are all closed.

[0458] Second, when it is determined that the current operating mode requires refrigerant storage, the liquid inlet valve 221 and gas balancing valve 224 are opened, and the pressurizing valve 222 and liquid drain valve 223 are closed. The opening of the gas balancing valve 224 causes the pressure in the storage container 220 to be at a low pressure. The opening of the liquid inlet valve 221 causes the refrigerant inlet pipe of the storage container 220 to be at a medium pressure, and the refrigerant enters the storage container 220 due to the pressure difference.

[0459] Third, when it is determined that the current operating mode requires the storage container 220 to be activated to release refrigerant, the inlet valve 221 and gas balance valve 224 are closed, and the pressurizing valve 222 and drain valve 223 are opened. Opening drain valve 223 places the outlet of storage container 220 at a low pressure, while opening pressurizing valve 222 places the pressure inside the storage container 220 at a high pressure. Under the influence of gravity and the pressure differential, the refrigerant inside the tank is discharged and enters the pipeline circulation. When the storage container 220 releases refrigerant, the opening of pressurizing valve 222 uses high-temperature, high-pressure refrigerant to increase the internal pressure of the tank and evaporate the refrigerant, thereby enabling faster refrigerant release.

[0460] See also Figures 54 to 56 This embodiment provides another storage container with only two ports: 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, while the second outlet 220c' is connected to the third pipeline 5 via a drain valve 223 and a capillary tube 225.

[0461] The storage container 220 has three states: not working, storing refrigerant and releasing refrigerant. These three states can be used in different system modes (conventional refrigeration, complete cold storage, etc.).

[0462] The first one is that when not working, the drain valve 223 and the gas balance valve 224 are both closed.

[0463] 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 storage container 220 under the action of the pressure difference.

[0464] The third type is that when it is determined that the current operating mode requires starting the storage container 220 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.

[0465] This technical solution uses fewer connecting pipes, saves materials, and is simpler to control.

[0466] 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.

[0467] 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.

[0468] 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.

[0469] 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) comprising an inlet (101a) and an outlet (101b); outdoor heat exchanger (104); at least two indoor heat exchangers (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), the accumulator (201), and the indoor heat exchanger (7); 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 valve positions so that at least one of the outdoor heat exchanger (104), the at least two indoor heat exchangers (7), and the accumulator (201) is configured as a condenser, and at least another one of them is configured as an evaporator; Wherein, each of the indoor heat exchangers (7) is arranged in parallel; the air conditioning system further comprises: 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 each indoor heat exchanger (7); A second pipeline (4), one end of which is connected to the second regulating valve (103) and the inlet of the accumulator (201), and the other end of which is connected to the other end of each of the indoor heat exchangers (7); and The third pipeline (5) has one end connected to the outlet of the accumulator (201) and the inlet of the compressor (101), and the other end connected to the other end of each of the indoor heat exchangers (7).

2. The air conditioning system according to claim 1, characterized in that The first regulating valve (102) comprises 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) via a first throttle element; 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 in communication, and the third valve port and the fourth valve port of the first regulating valve (102) are in communication; 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 in communication, and the second valve port and the third valve port of the first regulating valve (102) are in communication.

3. 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 inlet of the indoor heat exchanger (7) and the accumulator (201); 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 in communication, and the third valve port and the fourth valve port of the second regulating valve (103) are in communication; 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 in communication, and the second valve port and the third valve port of the second regulating valve (103) are in communication.

4. The air conditioning system according to claim 1, characterized in that Also includes: The subcooler (107) comprises 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); and the second flow channel is connected to the first regulating valve (102), the second regulating valve (103), and the inlet of the compressor (101).

5. The air conditioning system according to claim 4, 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).

6. The air conditioning system according to claim 4, 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).

7. The air conditioning system according to claim 1, characterized in that Also includes: A bypass valve (211) is arranged in 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).

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

9. The air conditioning system according to claim 1, characterized in that Also includes: A heat release valve (210), wherein the outlet of the accumulator (201) is connected to the third pipeline (5) via the heat release valve (210).

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 communication branch (204''), arranged in parallel with the first communication branch (204'), also connecting the inlet of the accumulator (201) and the first pipeline (3); a fourth throttle valve (206), arranged on the first communication branch (204'); as well as The cold release valve (207) is arranged on the second communication branch (204'').

11. The air conditioning system according to claim 10, characterized in that 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 11, characterized in that Also includes: A storage container (220) comprising a first inlet (220a), a port (220b), and a first outlet (220c); Liquid inlet valve (221); Pressurizing valve (222); drain valve (223); Gas balance valve (224); and capillary (225); Wherein, the first inlet (220a) is connected to the first pipeline (3) through the liquid inlet valve (221); The port (220b) is connected to the first gas pipe (202) via the pressurizing valve (222), and is connected to the third pipeline (5) via the capillary tube (225) and the gas balancing valve (224); The first outlet (220c) is connected to the third pipeline (5) through the capillary tube (225) and the drain valve (223).

13. The air conditioning system according to claim 1, wherein: Also includes: A storage container (220) comprising a second inlet (220a') and a second outlet (220c'); drain valve (223); Gas balance valve (224); and capillary (225); The second inlet (220a') is connected to the first pipeline (3) through the gas balance valve (224); and the second outlet (220c') is connected to the third pipeline (5) through the drain valve (223) and the capillary tube (225).

14. The air conditioning system according to claim 1, wherein: Also includes: A first branch (3'), one end of which is in communication with the first pipeline (3), and the other end of which is in communication with one end of the indoor heat exchanger (7); a fifth throttle valve (701), arranged on the first branch (3'); A second branch (4'), one end of which is in communication with the second pipe (4), and the other end of which is in communication with the other end of the indoor heat exchanger (7); A refrigeration valve (602) is arranged on the second branch (4'); A third branch (5'), one end of which is in communication with the third pipe (5), and the other end of which is in communication with the other end of the indoor heat exchanger (7); and The heating valve (603) is arranged on the third branch (5').

15. The air conditioning system according to claim 14, characterized in that Each indoor heat exchanger (7) is independently provided with the first branch (3'), the fifth throttle valve (701), the second branch (4'), the cooling valve (602), the third branch (5') and the heating valve (603).

16. An air conditioning control method, characterized in that: The air conditioner is the air conditioning system according to any one of claims 1 to 15, 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.

17. The air conditioning control method according to claim 16, wherein: Determining the operating mode of the air conditioning system includes: During a period when the power supply system is at a first electricity price, the energy accumulator (201) is determined to be in one of the following states: a non-operating state, a cooling state, or a heat release state; and during a period when the power supply system is at 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 cooling state, or a heat storage state.

18. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a conventional full cooling mode; in the conventional full 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.

19. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a conventional main cooling mode; in the conventional main cooling mode, the first regulating valve (102) is powered off, the second regulating valve (103) is powered on, and the accumulator (201) is in a non-working state; the outdoor heat exchanger (104) is used as a condenser, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser; the evaporation load of the indoor heat exchanger (7) used as an evaporator is greater than the condensation load of the indoor heat exchanger (7) used as a condenser.

20. The air conditioning control method according to claim 16, wherein: 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.

21. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a complete cold storage and complete cooling mode; in the cold storage and complete 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.

22. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a fully cold storage and fully heating outdoor unit condensing mode; in the fully cold storage and fully heating outdoor unit condensing 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.

23. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a fully cold storage and fully heating outdoor unit evaporation mode; in the cold storage and fully heating outdoor unit evaporation 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.

24. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a cold storage and main cooling mode; in the cold storage and main cooling 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, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser; the evaporation load of the indoor heat exchanger (7) used as an evaporator is greater than the condensation load of the indoor heat exchanger (7) used as a condenser.

25. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a cold storage and main heating outdoor unit evaporation mode; in the cold storage and main 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 an evaporator, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser; the evaporation load of the indoor heat exchanger (7) used as an evaporator is less than the condensation load of the indoor heat exchanger (7) used as a condenser.

26. The air conditioning control method according to claim 16, characterized in that: The working mode of the air-conditioning system includes a cold storage and main heating outdoor unit condensing mode; in the cold storage and main heating mode, the first regulating valve (102) is powered off and 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, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser; the evaporation load of the indoor heat exchanger (7) used as an evaporator is less than the condensation load of the indoor heat exchanger (7) used as a condenser.

27. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a supercooling release and full cooling mode; in the supercooling release and full cooling mode, the first regulating valve (102) is powered off, the second regulating valve (103) is 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 used as an evaporator.

28. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a supercooling release and main cooling mode; in the supercooling release and main cooling mode, the first regulating valve (102) is powered off and the second regulating valve (103) is powered on, the outdoor heat exchanger (104) is used as a condenser, the accumulator (201) is used as a supercooler, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser; the evaporation load of the indoor heat exchanger (7) used as an evaporator is greater than the condensation load of the indoor heat exchanger (7) used as a condenser.

29. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a condensing cooling and full cooling mode; in the cooling and full cooling 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 a condenser, and the indoor heat exchanger (7) is used as an evaporator.

30. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a condensing cooling and main cooling mode; in the condensing cooling and main cooling 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 a condenser, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is greater than the condensation load of the indoor heat exchanger (7) used as a condenser.

31. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a parallel cooling and full cooling mode; in the parallel cooling and full cooling 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 a condenser, and the indoor heat exchanger (7) is used as an evaporator.

32. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a parallel cooling and main cooling mode; in the parallel cooling and main cooling mode, the first regulating valve (102) is powered off and the second regulating valve (103) is powered on, the outdoor heat exchanger (104) is used as a condenser, the accumulator (201) is used as a condenser, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is greater than the condensation load of the indoor heat exchanger (7) used as a condenser.

33. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a parallel cooling and main cooling mode; in the parallel cooling and main cooling mode, the first regulating valve (102) is energized, the second regulating valve (103) is energized, the outdoor heat exchanger (104) is used as a condenser, the accumulator (201) is used as a condenser, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is greater than the condensation load of the indoor heat exchanger (7) used as a condenser.

34. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a conventional full heating mode; in the conventional full 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.

35. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a conventional main heating mode; in the conventional main 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, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser; the evaporation load of the indoor heat exchanger (7) used as an evaporator is less than the condensation load of the indoor heat exchanger (7) used as a condenser.

36. The air conditioning control method according to claim 16, characterized in that: The operating mode of the air-conditioning system includes a full heat storage mode; in the full heat storage 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 not working.

37. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a heat storage and full heating mode; in the heat storage and full 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.

38. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a heat storage and complete refrigeration outdoor unit evaporation mode; in the heat storage and complete refrigeration outdoor unit evaporation 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 an evaporator.

39. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a heat storage and complete refrigeration outdoor unit condensing mode; in the heat storage and complete refrigeration outdoor unit condensing 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 a condenser, and the indoor heat exchanger (7) is used as an evaporator.

40. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a heat storage and main heating mode; in the heat storage and main 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, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is less than the condensation load of the indoor heat exchanger (7) used as a condenser.

41. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a heat storage and main body refrigeration outdoor unit condensing mode; in the heat storage and main body refrigeration outdoor unit condensing mode, the first regulating valve (102) is powered off and the second regulating valve (103) is powered on, the outdoor heat exchanger (104) is used as a condenser, the accumulator (201) is used as a condenser, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is greater than the condensing load of the indoor heat exchanger (7) used as a condenser.

42. The air conditioning control method according to claim 16, characterized in that: The working mode of the air-conditioning system includes a heat storage and main body refrigeration outdoor unit evaporation mode; in the heat storage and main body refrigeration outdoor unit evaporation 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, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is greater than the condensation load of the indoor heat exchanger (7) used as a condenser.

43. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a mixed heat release and full heating mode; in the mixed heat release and full 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 an evaporator, and the indoor heat exchanger (7) is used as a condenser.

44. The air conditioning control method according to claim 16, characterized in that: The working mode of the air-conditioning system includes a mixed heat release and main heating mode; in the mixed heat release and main 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 an evaporator, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is less than the condensation load of the indoor heat exchanger (7) used as a condenser.

45. The air conditioning control method according to claim 16, characterized in that: The working mode of the air-conditioning system includes an independent heat release and full heating mode; in the independent heat release and full heating 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.

46. ​​The air conditioning control method according to claim 16, characterized in that: The working mode of the air-conditioning system includes an independent heat release and main heating mode; in the independent heat release and main heating 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, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is less than the condensation load of the indoor heat exchanger (7) used as a condenser.

47. The air conditioning control method according to claim 16, wherein: 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.

48. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a continuous heating, defrosting and full heating mode; in the continuous heating, defrosting and full heating 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.

49. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a continuous heating and defrosting mode and a main heating mode; in the continuous heating and defrosting mode and the main heating mode, the first regulating valve (102) is powered off and 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, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is less than the condensation load of the indoor heat exchanger (7) used as a condenser.

50. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a continuous heating and defrosting and main cooling mode; in the continuous heating and defrosting and main cooling mode, the first regulating valve (102) is powered off and 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, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is greater than the condensation load of the indoor heat exchanger (7) used as a condenser.

51. The air conditioning control method according to claim 16, wherein: The working mode of the air-conditioning system includes a conventional heat recovery mode; in the conventional heat recovery 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 not working, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is equal to the condensation load of the indoor heat exchanger (7) used as a condenser.

52. The air conditioning control method according to claim 16, characterized in that: The working mode of the air-conditioning system includes a cold storage and heat recovery mode; in the cold storage and heat recovery 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, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is less than the condensation load of the indoor heat exchanger (7) used as a condenser.

53. The air conditioning control method according to claim 16, characterized in that: The working mode of the air-conditioning system includes a heat storage and heat recovery mode; in the heat storage and heat recovery 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 a condenser, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is greater than the condensation load of the indoor heat exchanger (7) used as a condenser.

54. The air conditioning control method according to claim 16, characterized in that: The working mode of the air-conditioning system includes a cooling and heat recovery mode; in the cooling and heat recovery 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 a condenser, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is greater than the condensation load of the indoor heat exchanger (7) used as a condenser.

55. The air conditioning control method according to claim 16, characterized in that: The working mode of the air-conditioning system includes a heat release and heat recovery mode; in the heat release and heat recovery 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, part of the indoor heat exchanger (7) is used as an evaporator, and the rest of the indoor heat exchanger (7) is used as a condenser, and the evaporation load of the indoor heat exchanger (7) used as an evaporator is less than the condensation load of the indoor heat exchanger (7) used as a condenser.

56. 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 16 to 55 based on instructions stored in the memory.

57. 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 16 to 55 is implemented.

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