Air-conditioning apparatus, control method for air-conditioning apparatus, and control device

Abstract

The application relates to the technical field of smart homes, and discloses an air conditioner device, which comprises an outdoor heat exchange system, a refrigerant circulation loop formed by a compressor, a hot water tank, a first throttling element, an outdoor heat exchanger, an ejector, a cold water tank and a liquid storage tank connected in sequence; wherein the liquid storage tank comprises a second outlet, the second outlet is connected with the cold water tank and the ejector through a pipeline and a second throttling element to form a cold water tank temperature adjusting bypass; an indoor water circulation system comprises an indoor heat exchanger which is connected with the cold water tank through a cold water pipeline to form a cold water circulation loop; the indoor heat exchanger is also connected with the hot water tank through a hot water pipeline to form a hot water circulation loop; wherein the indoor heat exchanger comprises one or more groups. The device can meet the needs of users for heating, cooling and dehumidification. The cold water tank temperature adjusting bypass is formed by using the liquid storage tank and the ejector, so that the whole system is more energy-saving and has high efficiency. The application further discloses a control method and a control device for the air conditioner device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smart home, for example, relates to an air conditioning device, a control method and a control device for the air conditioning device. BACKGROUND

[0002] Traditional air conditioners use refrigerants to regulate indoor temperature and humidity, but cannot meet the user's demand for uninterrupted heating and cooling throughout the year. To achieve the above-mentioned demand, more than one set of compressors and outdoor heat balancers are generally used to meet the use of multiple modes, and air supplement and enthalpy increase are used to supplement the deficiency of low-temperature heating conditions in winter.

[0003] In the related art, the compressor, the four-way reversing valve, the outdoor unit and the water-fluorine heat exchanger, the indoor heat exchanger is divided into indoor heating and dehumidification heat recovery terminal and indoor refrigeration and dehumidification terminal; the water-fluorine heat exchanger is divided into a first water-fluorine heat exchanger and a second water-fluorine heat exchanger; the first mode is a refrigeration mode, the second mode is a heating mode, and the third mode is a dehumidification and heat recovery mode. The first water-fluorine heat exchanger is arranged at the gas outlet end of the compressor and is in communication with the indoor heating and dehumidification heat recovery terminal of the domestic hot water tank through a hot water three-way valve.

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

[0005] In the related art, the recycling of cold and heat energy cannot be realized, resulting in high energy consumption of the air conditioning system.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important components or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide an air conditioning device, a control method and a control device for the air conditioning device, so as to recycle the energy of the refrigerant, thereby reducing the energy consumption of the air conditioning device.

[0009] In some embodiments, the air conditioning device comprises:

[0010] The outdoor heat exchange system comprises a compressor, a hot water tank, a first throttling element, an outdoor heat exchanger, an ejector, a cold water tank and a liquid storage tank connected in sequence to form a refrigerant circulation loop.

[0011] The liquid storage tank comprises a second outlet, the second outlet is connected to the cold water tank and the ejector through a pipeline and a second throttling element to form a cold water tank temperature adjustment bypass.

[0012] The indoor water circulation system comprises an indoor heat exchanger, which is connected to the cold water tank through a cold water pipeline to form a cold water circulation loop, and is connected to the hot water tank through a hot water pipeline to form a hot water circulation loop.

[0013] The indoor heat exchanger comprises one or more groups.

[0014] In some embodiments, the method comprises:

[0015] Determining a target operation mode of the air conditioning system;

[0016] According to the target operation mode, determining an operation parameter of the outdoor heat exchange system, and a target state of the cold and hot water circulation loops;

[0017] Controlling the outdoor heat exchange system to execute the operation parameter, and controlling the cold and hot water circulation loops to execute the target state.

[0018] The operation parameter of the outdoor heat exchange system comprises the states of the first and second throttling elements.

[0019] In some embodiments, the control device of the air conditioning device comprises a processor and a memory storing program instructions, the processor is configured to execute the control method for the air conditioning device as described above when the program instructions are executed.

[0020] In some embodiments, the storage medium stores program instructions, which are executed to perform the control method for the air conditioning device as described above.

[0021] The air conditioning device, the control method and the control device for the air conditioning device provided by the embodiments of the present disclosure can achieve the following technical effects:

[0022] In the embodiments of the present disclosure, the indoor water circulation system is connected to the cold water tank and the hot water tank of the outdoor heat exchange system through the cold water pipeline and the hot water pipeline respectively to meet the needs of the user for heating, cooling and dehumidifying. The liquid storage tank and the ejector form a cold water tank temperature adjustment bypass. In this way, the temperature of the cold water tank is adjusted by using the cold energy of the refrigerant, and the adjustment of different evaporation temperatures of the refrigerant is also realized. Therefore, the entire system is more energy-saving and has high efficiency.

[0023] The general description above and the following description below are exemplary and explanatory only and are not restrictive of the application. BRIEF DESCRIPTION OF DRAWINGS

[0024] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the embodiments. Like numbers refer to like elements throughout the drawings, which are not necessarily to scale, and in which:

[0025] Figure 1 is a structural schematic diagram of an air conditioning device provided by an embodiment of the present disclosure;

[0026] Figure 2 is a schematic diagram of the air conditioning device provided by an embodiment of the present disclosure operating in a cooling mode;

[0027] Figure 3 is a schematic diagram of the air conditioning device provided by an embodiment of the present disclosure operating in a heating mode;

[0028] Figure 4 is a schematic diagram of another air conditioning device provided by an embodiment of the present disclosure (operating in a cooling + heating mode);

[0029] Figure 5 is a schematic diagram of a control method for an air conditioning device provided by an embodiment of the present disclosure;

[0030] Figure 6 is a schematic diagram of the air conditioning device provided by an embodiment of the present disclosure operating in a reheating dehumidification mode (non-stop defrosting + heating mode);

[0031] Figure 7 is a schematic diagram of the air conditioning device provided by an embodiment of the present disclosure operating in a reheating dehumidification + cooling mode;

[0032] Figure 8 is a schematic diagram of the air conditioning device provided by an embodiment of the present disclosure operating in a reheating dehumidification + heating mode;

[0033] Figure 9 is a schematic diagram of another control method for an air conditioning device provided by an embodiment of the present disclosure;

[0034] Figure 10 is a schematic diagram of another control method for an air conditioning device provided by an embodiment of the present disclosure;

[0035] Figure 11 is a schematic diagram of a control device for an air conditioning device provided by an embodiment of the present disclosure;

[0036] Figure 12 is a schematic diagram of another air conditioning device provided by an embodiment of the present disclosure.

[0037] Reference Signs:

[0038] 11: compressor; 12: hot water tank; 13: first throttling element; 14: outdoor heat exchanger; 15: ejector; 16: cold water tank; 17: liquid storage tank; 18: second throttling element; 19: waste heat recovery device; 21: indoor heat exchanger; 211: first indoor heat exchanger; 212: second indoor heat exchanger; 31: first three-way valve; 32: first stop valve; 33: second three-way valve; 34: second stop valve; 41: first on-off valve; 42: second on-off valve; 43: third on-off valve; 44: fourth on-off valve; 51: refrigerant bypass line; 52: fifth on-off valve; 61: cold water bypass; 62: sixth on-off valve. DETAILED DESCRIPTION

[0039] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below, and the accompanying drawings are used for reference only and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, through multiple details, a sufficient understanding of the disclosed embodiments is provided. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0040] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0041] Unless otherwise specified, the term "a plurality of" means two or more.

[0042] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the preceding and following objects. For example, A / B represents: A or B.

[0043] The term "and / or" is a description of the association relationship between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0044] The term "corresponding" can refer to an association relationship or a binding relationship. A and B correspond to each other means that there is an association relationship or a binding relationship between A and B.

[0045] In the embodiments of the present disclosure, the smart home appliance refers to a home appliance product formed by introducing microprocessors, sensor technology, network communication technology into home appliances, having the characteristics of intelligent control, intelligent sensing and intelligent application, and the operation process of the smart home appliance often depends on the application and processing of modern technologies such as the Internet of Things, the Internet and electronic chips. For example, the smart home appliance can realize remote control and management of the smart home appliance by connecting electronic devices.

[0046] In combination Figure 1 , the air conditioning device comprises an outdoor heat exchange system and an indoor water circulation system. The outdoor heat exchange system comprises a compressor 11, a hot water tank 12, a first throttling element 13, an outdoor heat exchanger 14, an ejector 15, a cold water tank 16, and a liquid storage tank 17. The exhaust port of the compressor is connected to the first inlet of the hot water tank, the first outlet of the hot water tank 12 is connected to the first inlet of the ejector 15 through the first throttling element 13 and the outdoor heat exchanger 14. The outlet of the ejector 15 is connected to the first inlet of the cold water tank 16 and then connected to the inlet of the liquid storage tank 17, and the first outlet of the liquid storage tank 17 is connected to the return port of the compressor 1, thereby forming a refrigerant circulation loop. The liquid storage tank 17 comprises a second outlet, which is connected to the second inlet of the cold water tank through a pipeline and a second throttling element 18, and the second outlet of the cold water tank 16 and the second inlet of the ejector 15 are connected, thereby forming a cold water tank temperature adjustment bypass.

[0047] The indoor water circulation system comprises an indoor heat exchanger, which is connected to the cold water tank through a cold water pipeline to form a cold water circulation loop, and is connected to the hot water tank through a hot water pipeline to form a hot water circulation loop. The indoor heat exchanger 21 comprises one or more groups, and when the indoor heat exchanger comprises multiple groups, each group of heat exchangers is arranged in a different space in the room.

[0048] In combination Figure 2 As shown in the air conditioning device, when the air conditioning device operates in a refrigeration mode, the operation process of the outdoor heat exchange system is as follows: the refrigerant is discharged through the exhaust port of the compressor, flows through the hot water tank (in the refrigeration mode, the hot water circulation loop of the indoor heat exchange system is cut off, so the refrigerant basically does not exchange heat with the hot water tank). Then the refrigerant flows into the outdoor heat exchanger through the first throttling element for heat dissipation (at this time, the outdoor heat exchanger is a condenser), and then flows through the cold water tank for heat exchange after throttling by the ejector, and then flows into the liquid storage tank. Part of the refrigerant in the liquid storage tank flows through the cold water tank for heat exchange again under the condition that the second throttling element is opened and throttled, and then flows into the second inlet of the ejector for throttling and returns to the liquid storage tank (i.e. part of the refrigerant flows through the cold water tank temperature adjustment bypass). Part of the refrigerant in the liquid storage tank flows back to the compressor.

[0049] At the same time, the operation process of the indoor heat exchanger is as follows: the hot water circulation loop is cut off, and the cold water circulation loop is turned on. The cold water flows from the outlet of the cold water tank into the indoor heat exchanger and then flows back to the water inlet of the cold water tank through the pipeline.

[0050] In the refrigeration mode, the cold water tank temperature adjustment bypass is turned on, and the temperature of the refrigerant is further reduced to perform secondary cooling on the cold water of the cold water tank. Here, the cold water tank divides the inner cavity into two cavities by a partition, and the two cavities are communicated through a hole. Alternatively, the cold water tank includes two independent tank bodies, and the two tank bodies are communicated through a pipeline. The cold water tank temperature adjustment bypass and the refrigerant circulation loop flow through different cavities respectively, so that the water temperatures of the two cavities are different. In this way, the heat of the refrigerant is fully utilized, the cold water temperature is step-adjusted, and the indoor refrigeration capacity in the hot season is improved. In addition, due to the negative pressure effect inside the ejector, the refrigerant in the bypass is sucked into the ejector. That is, the power of the bypass refrigerant does not need to be provided by the compressor, and the load of the compressor is further reduced, and the energy efficiency of the air conditioning device is improved.

[0051] In combination Figure 3 As shown in the figure, when the air conditioning device operates in the heating mode, the operation process of the outdoor heat exchanger system is as follows: the refrigerant is discharged through the discharge port of the compressor, flows through the hot water tank for heat exchange. Then, the cooled refrigerant flows into the outdoor heat exchanger for heat absorption (at this time, the outdoor heat exchanger is an evaporator), and then flows through the cold water tank after being throttled by the ejector, and then flows into the liquid storage tank (in the heating mode, the cold water circulation loop of the indoor heat exchange system is cut off, so the refrigerant basically does not exchange heat with the cold water tank). The refrigerant in the liquid storage tank flows back to the compressor.

[0052] At the same time, the operation process of the indoor heat exchanger is as follows: the hot water circulation loop is turned on, and the cold water circulation loop is cut off. The hot water flows from the outlet of the hot water tank into the indoor heat exchanger, and then flows back to the hot water tank through the pipeline. In the heating mode, the cold water tank temperature adjustment bypass is cut off.

[0053] The air conditioning device provided by the embodiment of the present disclosure is adopted, the indoor water circulation system is connected to the cold water tank and the hot water tank of the outdoor heat exchange system through the cold water pipeline and the hot water pipeline respectively, to meet the needs of users for heating, cooling, dehumidification and the like. And the liquid storage tank and the ejector form a cold water tank temperature adjustment bypass. In this way, while the cold water tank temperature is adjusted by using the cold quantity of the refrigerant, the adjustment of different evaporation temperatures of the refrigerant is also realized. Thus, the whole system is more energy-saving and efficient.

[0054] Optionally, the cold water tank includes: a first cold water tank 161 and a second cold water tank 162.

[0055] The first cold water tank 161 is arranged in the pipeline between the outlet of the ejector 15 and the inlet of the liquid storage tank 17 in the refrigerant circulation loop. The second cold water tank 162 is arranged in the pipeline between the second outlet of the liquid storage tank 17 and the second inlet of the ejector 15 in the cold water tank temperature adjustment bypass. The first cold water tank and the second cold water tank are connected through the pipeline. The second cold water tank 162 is provided with a water outlet, and the first cold water tank 161 is provided with a water inlet.

[0056] Here, in order to better realize the step adjustment of the cold water temperature, two cold water tanks are arranged. The first cold water tank is arranged on the refrigerant circulation loop, and the second cold water tank is arranged on the cold water tank temperature adjustment bypass. In this way, the refrigerant flowing through the first cold water tank flows back to the liquid storage tank, and then the liquid refrigerant in the liquid storage tank is throttled by the second throttling device and exchanges heat with the second cold water tank. The water in the second cold water tank absorbs the cold energy of the refrigerant, so that the water temperature is reduced. The refrigerant flowing out of the second cold water tank mixes with the refrigerant at the first inlet of the ejector and then flows back to the liquid storage tank and then flows into the compressor. In this way, the water temperature of the second cold water tank is lower than that of the first cold water tank, thereby helping to meet the different refrigeration needs of users.

[0057] In addition, the first cold water tank and the second cold water tank are connected through the pipeline, and form a closed loop with the cold water pipeline and the indoor heat exchanger to realize cold water circulation. The second cold water tank is provided with a water outlet, and the first cold water tank is provided with a water inlet, that is, the cold water with lower temperature flows to the indoor heat exchanger for refrigeration and then flows back to the first cold water tank through the water inlet. In this way, the low-temperature water exchanges heat with the indoor environment, which helps to improve the refrigeration effect.

[0058] Optionally, each group of indoor heat exchangers includes a first indoor heat exchanger 211 and a second indoor heat exchanger 212, which are arranged in parallel.

[0059] The first end and the second end of the first indoor heat exchanger 211 are respectively provided with a first three-way valve 31 and a first stop valve 32 connected to the cold water pipeline. The first end and the second end of the second indoor heat exchanger 212 are respectively provided with a second three-way valve 33 and a second stop valve 34 connected to the hot water pipeline. One end of the first three-way valve 31 is connected between the second stop valve 34 and the first end of the second indoor heat exchanger 212, and one end of the second three-way valve 33 is connected between the first stop valve 32 and the second end of the first indoor heat exchanger 211.

[0060] Here, each group of indoor heat exchangers includes two indoor heat exchangers, and through the design of the three-way valve and the stop valve, the two indoor heat exchangers can be controlled to be evaporators and condensers respectively. In this way, the indoor air can be dehumidified and then heated, avoiding the influence of high humidity in winter on the sensible temperature of indoor heating. Or, when defrosting the outdoor heat exchanger in winter, indoor heating can still be ensured, that is, defrosting heating without stopping.

[0061] Optionally, the flow direction of the refrigerant in the cold water tank 16 and the hot water tank 12 is opposite to the flow direction of the water.

[0062] Here, the cold water tank 16 and the hot water tank 12 adopt the reverse circulation mode for heat exchange, so that the heat exchange effect is better. Among them, the cold water tank includes the first cold water tank and the second cold water tank described above. It can be understood that if the flow direction of the refrigerant in the water tank is the same as the flow direction of the water, the heat exchange efficiency is high at the initial stage of heat exchange. With the flow of the refrigerant and the water, the temperature difference between the two gradually decreases, resulting in a decrease in heat exchange efficiency, and even the heat exchange is basically zero. Therefore, the reverse circulation mode is more helpful to improve the heat exchange effect.

[0063] Optionally, in combination with Figure 4 As shown, the air conditioning device further comprises a waste heat recovery device 19. The waste heat recovery device 19 comprises a first refrigerant passage and a second refrigerant passage; the first refrigerant passage is connected to the pipeline between the hot water tank 12 and the first throttling element 13; and the second refrigerant passage is connected to the pipeline between the liquid storage tank 17 and the compressor 11.

[0064] Here, the refrigerant flowing back to the compressor from the liquid storage tank is preheated in the waste heat recovery device. That is, the high-temperature refrigerant flowing out of the compressor is used to preheat the low-temperature refrigerant flowing out of the liquid storage tank, so as to avoid the temperature of the gas flowing back to the compressor being too low. In this way, it is helpful to improve the energy efficiency of the compressor.

[0065] Optionally, the air conditioning device further comprises a first on-off valve 41 and a second on-off valve 42 arranged at the water outlet and the water inlet of the hot water tank 12; and a third on-off valve 43 and a fourth on-off valve 44 arranged at the water outlet and the water inlet of the cold water tank 16.

[0066] In this way, on the one hand, when the cold water circulation loop and / or the hot water circulation loop is cut off, the corresponding on-off valve can be controlled to cut off the water of the corresponding loop. Thus, the leakage of the pipeline is avoided, and the influence on the indoor wall and floor is avoided. On the other hand, the on-off valve can lead out a hot water / cold water branch to connect to the end device of the intelligent household appliance or other water-using device. Thus, the demand of the user for hot water / cold water in other aspects of life is met; such as water heaters, floor heating, etc. That is, the indoor water circulation system comprises the indoor heat exchanger and the end device of other water-using device.

[0067] Optionally, the cold water circulation loop and the hot water circulation loop are respectively provided with a cold water pump and a hot water pump.

[0068] In this way, the power source is provided for the cold water circulation and the hot water circulation.

[0069] In combination with Figure 5 As shown, the present disclosure provides a control method for an air conditioning device, comprising:

[0070] S101, the processor determines the target operation mode of the air conditioning device.

[0071] S102, the processor determines the operation parameters of the outdoor heat exchange system and the target state of the cold and hot water circulation loops according to the target operation mode.

[0072] S103, the processor controls the outdoor heat exchange system to execute the operation parameters and the cold and hot water circulation loops to execute the target state.

[0073] The operation parameters of the outdoor heat exchange system include the states of the first and second throttling elements.

[0074] In the embodiments of the present disclosure, the target operation mode of the air conditioning device includes multiple modes, such as a refrigeration mode, a heating mode, a reheating dehumidification mode, and a non-stop defrosting mode. The target mode can be unique or not unique. For example, in winter, the heating mode can be synchronized with the reheating dehumidification mode or the non-stop defrosting mode. For example, in summer, the user needs hot water when bathing, at this time, the target mode also includes the heating mode. Here, the target operation mode of the air conditioning device can be determined by the user's demand for the smart home appliance. For example, the target temperature and operation mode of the smart home appliance are obtained, and the smart home appliance includes air conditioners, water heaters, floor heating devices, and other end devices connected to cold and hot water.

[0075] Further, based on the target operation mode, the operation parameters of the indoor water circulation system and the outdoor heat exchange system are determined. Specifically, the outdoor heat exchanger can be used as a heat balancer, and the state of the first throttling element can be adjusted to adjust the outdoor heat exchanger as a condenser or an evaporator. In addition, as described above, whether the cold water circulation loop is connected also determines the state of the cold water tank temperature adjustment bypass, that is, the state of the second throttling element. Therefore, the target operation mode determines the states of the first and second throttling elements in the outdoor heat exchange system. At the same time, the target operation mode also determines the connection state of the corresponding water circulation loop, and further affects the state of each control valve in the water circulation loop. Therefore, the target state of the cold and hot water circulation loops is determined by the target operation mode, including the connection state of the corresponding water circulation loop and the state of the control valve. Finally, the outdoor heat exchange system and the indoor water circulation system are controlled to execute the operation parameters.

[0076] The control method for the air conditioning device provided by the embodiments of the present disclosure is based on the target operation mode to control the operation parameters of the outdoor heat exchange system and the indoor water circulation system, so that the air conditioning device can meet the user's demand for heating, cooling, dehumidification, etc. And through the control of the first and second throttling elements of the outdoor heat exchange system, the entire system is more energy-saving and efficient.

[0077] Optionally, in the case where the target operation mode is unique, in step S102, the processor determines the operation parameters of the outdoor heat exchange system according to the target operation mode, including:

[0078] In a case where the target operation mode is the cooling mode, the processor determines that the first throttling element is in the fully open state and the second throttling element is in the throttling state.

[0079] In a case where the target operation mode is the heating mode, the processor determines that the first throttling element is in the throttling state and the second throttling element is in the closed state.

[0080] Here, the target operation mode is unique in that the states of each group of indoor heat exchangers are consistent, and the states of multiple groups of indoor heat exchangers are consistent when there are multiple groups of indoor heat exchangers. That is, the multiple indoor heat exchangers are all evaporators or the indoor heat exchangers are all condensers. Alternatively, the target operation mode is unique in that, in a case where the air conditioning device is connected to other terminal equipment, the cold and heat demands of the terminal equipment and the indoor heat exchangers are consistent.

[0081] The target operation mode is unique in that the air conditioning device operates in the cooling mode or the heating mode. Specifically, in the cooling mode, it is determined that the first throttling element is in the fully open state and the second throttling element is in the throttling state (i.e., the opening degree of the second throttling element is less than the maximum opening degree). This is because, in the cooling mode, the water in the hot water tank does not circulate, and therefore the hot water tank has a limited role as a condenser. Therefore, the outdoor heat exchanger needs to function as a condenser, i.e., the first throttling element is fully open and does not function as a throttling element. Further, in the cooling mode, the second throttling element is in the throttling state. The cold capacity of the refrigerant can be used to further reduce the water temperature of the cold water tank. In this way, the cooling energy efficiency of the air conditioning device is better.

[0082] Similarly, in the heating mode, it is determined that the first throttling element is in the throttling state and the second throttling element is in the closed state. Because the cold water circulation pipeline is not connected, the water in the cold water tank does not circulate, and therefore the second throttling element is closed. At the same time, the water in the cold water tank does not circulate, and the cold water tank has a limited role as an evaporator. Therefore, the first throttling element is in the throttling state so that the outdoor heat exchanger functions as an evaporator. Thus, the heating energy efficiency of the air conditioning device is improved to meet the user's demand.

[0083] Alternatively, in a case where the target operation mode is not unique, in step S102, the processor determines the operating parameters of the outdoor heat exchange system according to the target operation mode, including:

[0084] In a case where the target operation mode includes multiple modes and the multiple modes do not include the defrosting mode, the processor determines that the second throttling element is in the throttling state and the opening degree of the first throttling element according to the load.

[0085] In a case where the target operation mode includes the heating mode and the defrosting mode, the processor determines that the first throttling element is in the fully open state and the second throttling element is in the closed state.

[0086] Here, when the indoor heat exchanger is one group, the target operation mode not unique means that the cold and heat demands of the first and second heat exchangers of the group are different, i.e., one heat exchanger is an evaporator and the other is a condenser. When the indoor heat exchanger is multiple groups, the target operation mode not unique includes that the cold and heat demands of any group of the indoor heat exchangers are different, and also includes that the cold and heat demands of some or certain groups of the indoor heat exchangers are different from those of the other groups. As an example, the indoor heat exchanger includes three groups, and if the cold and heat demands of two heat exchangers in any group of the indoor heat exchangers are different, the target operation mode is not unique. Alternatively, if the cold demand exists in one or two groups of the indoor heat exchangers, and the heat demand exists in the other groups of the indoor heat exchangers, the target operation mode is also not unique.

[0087] Further, the combination of the multiple target operation modes includes refrigeration + heating, reheating dehumidification (including dehumidification + heating), reheating dehumidification + refrigeration, reheating dehumidification + heating, and defrosting without stopping + heating. Understandably, defrosting indicates that the outdoor heat exchanger is seriously frosted and iced, which generally occurs in the cold season. At this time, the indoor generally operates in the heating mode. Therefore, the defrosting without stopping mode is combined with the heating mode. When the target operation mode is not unique and does not include the defrosting mode, it indicates that the indoor heat exchanger has a cold and heat demand. That is, the cold water circulation loop and the hot water circulation loop are both turned on, and the second throttling element is necessarily in the throttling state when the cold water circulation loop is turned on. Whether the first throttling element is throttled determines whether the outdoor heat exchanger functions as an evaporator or a condenser. Which function the outdoor heat exchanger functions as depends on the size of the cold load and the heat load of the air conditioning device. Therefore, in this case, the opening degree of the first throttling element is determined according to the load.

[0088] In addition, when the target operation mode includes the heating mode and the defrosting without stopping mode, because the outdoor heat exchanger is frosted, the indoor heat exchanger should be a condenser to melt the frost layer. At this time, the first throttling element is in the fully open state. And because the cold water circulation loop does not work, the second throttling element is in the closed state.

[0089] Optionally, the processor determines the opening degree of the first throttling element according to the load, including:

[0090] In the case that the heat load is less than the cold load, the processor determines the opening degree of the first throttling element as the maximum opening degree.

[0091] In the case that the heat load is greater than the cold load, the processor determines the opening degree of the first throttling element as the target opening degree.

[0092] Wherein, the target opening degree is less than the maximum opening degree.

[0093] Here, when the heat load is greater than the cold load, it indicates that the heating demand of the condenser is greater than the refrigeration demand of the evaporator in the air conditioning device. Therefore, the first throttling element plays a throttling role (i.e., the opening of the first throttling element is less than the maximum opening), so that the outdoor heat exchanger acts as an evaporator. In this way, the balance of energy in the air conditioning device is ensured, i.e., the heating demand of the condenser is equal to the refrigeration demand of the evaporator.

[0094] Similarly, when the heat load is less than the cold load, it indicates that the heating demand of the condenser is less than the refrigeration demand of the evaporator in the air conditioning device. Therefore, the first throttling element does not play a throttling role (i.e., the opening of the first throttling element is maximum), so that the indoor heat exchanger acts as a condenser.

[0095] Optionally, S102, the processor determines the target state of the cold water circulation loop and the hot water circulation loop according to the target operating mode, including:

[0096] In the case where the target operating modes of the first heat exchanger and the second heat exchanger are the same, if the target operating mode is the refrigeration mode, the processor determines that the first three-way valve and the first stop valve of the cold water circulation loop are turned on, the second three-way valve of the hot water circulation loop is connected to both ends of the first heat exchanger and the second heat exchanger and turned on, and the second stop valve is cut off.

[0097] If the target operating mode is the heating mode, the processor determines that the second three-way valve and the second stop valve of the hot water circulation loop are turned on, the first three-way valve of the cold water circulation loop is connected to both ends of the first heat exchanger and the second heat exchanger and turned on, and the first stop valve is cut off.

[0098] Here, the target operating modes of the first heat exchanger and the second heat exchanger are the same, so the water circulation directions of the two are consistent. In the refrigeration mode, in combination with Figure 2 As shown in the refrigeration mode, the cold water flows out of the second water tank, flows into the first heat exchanger and the second heat exchanger through the first three-way valve (the second stop valve is cut off), and then the cold water of the first heat exchanger flows out through the first stop valve, and the refrigerant of the second heat exchanger flows to the first stop valve through the second three-way valve, and then flows out through the first stop valve. That is, the first three-way valve and the first stop valve of the cold water circulation loop are turned on, the second three-way valve of the hot water circulation loop is connected to both ends of the first heat exchanger and the second heat exchanger and turned on, and the second stop valve is cut off.

[0099] Similarly, in the heating mode, in combination with Figure 3 As shown in the heating mode, the hot water flows out of the hot water tank through the second three-way valve, flows into the first indoor heat exchanger and the second indoor heat exchanger, and the first stop valve is cut off. Then, the hot water of the second indoor heat exchanger flows back to the hot water tank through the second stop valve; at the same time, the hot water of the first indoor heat exchanger flows to the second stop valve through the first three-way valve, and then flows back to the hot water tank through the second stop valve. That is, the second three-way valve and the second stop valve of the hot water circulation loop are turned on, the first three-way valve of the cold water circulation loop is connected to both ends of the first heat exchanger and the second heat exchanger and turned on, and the first stop valve is cut off.

[0100] Further, it is necessary to point out that the air conditioning device comprises a first on-off valve and a second on-off valve arranged at the outlet and inlet of the hot water tank, and a third on-off valve and a fourth on-off valve arranged at the outlet and inlet of the cold water tank. The processor determines the target state of the cold water circulation loop and the hot water circulation loop according to the target operation mode, and further comprises: in the case where the target operation modes of the first heat exchanger and the second heat exchanger are the same, if the target operation mode is the cooling mode, the processor determines that the third on-off valve and the fourth on-off valve are turned on, and the first on-off valve and the second on-off valve are turned off. If the target operation mode is the heating mode, the processor determines that the first on-off valve and the second on-off valve are turned on, and the third on-off valve and the fourth on-off valve are turned off.

[0101] In the case where the indoor heat exchanger is multiple groups, the target operation modes of the first heat exchanger and the second heat exchanger are the same, including the target operation mode of a certain group of indoor heat exchangers being the cooling mode, and the target operation modes of the other groups of heat exchangers being the heating mode. The target state of the cold water circulation loop and the hot water circulation loop can be referred to the above-mentioned cooling mode and heating mode (see Figure 4 ).

[0102] Optionally, in the case where the air outlet of the air conditioner first flows through the first heat exchanger and then flows through the second heat exchanger S102, the processor determines the target state of the cold water circulation loop and the hot water circulation loop according to the target operation mode, including:

[0103] In the case where the target mode of the first heat exchanger is the dehumidification mode or the defrosting mode, and the target mode of the second heat exchanger is the heating mode, the processor determines that the first three-way valve of the cold water circulation loop connects the two ends of the first heat exchanger and the cold water pipeline, and the first on-off valve is turned on. The second three-way valve of the hot water circulation loop connects the two ends of the second heat exchanger and the hot water pipeline, and the second on-off valve is turned on.

[0104] Here, in the case where the target operation mode is the reheating dehumidification, based on the order in which the air outlet of the air conditioner flows through the heat exchangers, the first heat exchanger that flows first is determined to be in the dehumidification mode, and the second heat exchanger is in the heating mode. In this way, the air is first dehumidified and then heated before being blown out of the air conditioner. In order to meet the user's heating demand while dehumidifying. Specifically, as shown in Figure 6 , the end of the first three-way valve flowing to the second indoor heat exchanger is not turned on, and the first on-off valve is turned on. In this way, the cold water only flows through the first indoor heat exchanger. At the same time, the end of the second three-way valve flowing to the first indoor heat exchanger is not turned on, and the second on-off valve is turned on. In this way, the hot water only flows through the second indoor heat exchanger.

[0105] When the target operation mode is the non-stop defrosting + heating mode, the operating parameters of the indoor water circulation system are referred to the above-mentioned reheating dehumidification (see Figure 6 ); which will not be repeated here.

[0106] The above describes the case of one set of indoor heat exchangers. When there are multiple sets of indoor heat exchangers, if the target operating mode of one set of indoor heat exchangers is reheat dehumidification, the target operating modes of the other indoor heat exchangers can be heating or cooling modes. The following explanation uses two sets of indoor heat exchangers as an example.

[0107] like Figure 7 As shown, the first set of indoor heat exchangers performs reheat dehumidification, while the second set of indoor heat exchangers operates in cooling mode. Therefore, the cold water from the cold water tank, while flowing through the first heat exchanger of the first set of indoor heat exchangers, also flows through the first three-way valve of the second set of indoor heat exchangers to both the first and second indoor heat exchangers, and then exits through the first shut-off valve. Simultaneously, the second shut-off valve closes, and the second three-way valve closes at the hot water pipe end.

[0108] like Figure 8 As shown, the first set of indoor heat exchangers performs reheat dehumidification, while the second set of indoor heat exchangers operates in heating mode. The hot water from the hot water tank, as it flows through the second heat exchanger of the first set of indoor heat exchangers, also flows through the second three-way valve of the second set of indoor heat exchangers to both the first and second indoor heat exchangers, and then exits through the second shut-off valve. During this process, the first shut-off valve closes, and the first three-way valve closes at the cold water pipe end.

[0109] Combination Figure 9 As shown, this disclosure provides another control method for an air conditioning device, including:

[0110] S101, the processor determines the target operating mode of the air conditioning unit.

[0111] S102, the processor determines the operating parameters of the outdoor heat exchange system and the target status of the cold and hot water circulation loops according to the target operating mode.

[0112] S103, the processor controls the outdoor heat exchange system to execute operating parameters, and the cold and hot water circulation loops to execute target states.

[0113] S204, when the target operating mode includes heating mode and defrosting mode, and the outdoor ambient temperature is greater than the first threshold, the processor controls the fifth on / off valve to be in the conducting state.

[0114] Here, a refrigerant bypass line 51 is connected in parallel between the first inlet and outlet of the injector 15, and the refrigerant bypass line 51 is equipped with a fifth shut-off valve 52, see [link to relevant documentation]. Figure 4 The first threshold is a critical value used to define the severity of frost buildup. When the outdoor ambient temperature is greater than the first threshold, it indicates that the frost layer on the outdoor heat exchanger is relatively thin. In this case, the required energy efficiency of the air conditioning unit compressor can be appropriately reduced. Therefore, the fifth on / off valve is in the open state, and the ejector is essentially inactive.

[0115] It can be understood that the fifth on-off valve is controlled to be in the closed state when the outdoor ambient temperature is less than or equal to the first threshold. At this time, the frost layer is relatively thick, and the ejector plays a throttling role. Thus, the energy efficiency of the compressor is improved, and the complete melting and removal of the frost layer is facilitated.

[0116] In combination Figure 10 The embodiment of the present disclosure provides another control method for an air conditioning device, which comprises the following steps:

[0117] In S101, a processor determines a target operation mode of the air conditioning device.

[0118] In S102, the processor determines an operation parameter of an outdoor heat exchange system and a target state of a cold water circulation loop and a hot water circulation loop according to the target operation mode.

[0119] In S103, the processor controls the outdoor heat exchange system to execute the operation parameter and controls the cold water circulation loop and the hot water circulation loop to execute the target state.

[0120] In S304, when the outdoor ambient temperature is less than a second threshold and the cold water circulation loop is not turned on, the processor controls the sixth on-off valve to be turned on.

[0121] Here, the cold water tank comprises a first cold water tank and a second cold water tank, and a cold water bypass 61 is arranged between the first cold water tank and the second cold water tank. The cold water bypass and the first cold water tank and the second cold water tank constitute a cold water circulation bypass, and the sixth on-off valve 62 is arranged on the cold water bypass, as shown in Figure 4 When the outdoor ambient temperature is low (i.e., the outdoor ambient temperature is less than the second threshold) and the cold water circulation loop is not turned on, the water in the cold water tank is in a static state and is prone to freezing. After the cold water tank freezes, if the air conditioning device is to be operated in a reheating dehumidification mode or a non-stop defrosting mode, the cold water circulation system cannot be normally started. In order to avoid the above situation, the cold water circulation bypass is arranged, and the sixth on-off valve is controlled to be turned on, so that the cold water circulation bypass is turned on. In this way, the cold water in the cold water tank is in a circulating flow state and is not prone to freezing.

[0122] In addition, it can be understood that when the cold water circulation bypass is arranged, the cold water pump should be arranged on a pipeline commonly owned by the cold water circulation bypass and the cold water circulation loop. In this way, the cold water pump can provide power for the water circulation of the cold water circulation bypass and the water circulation of the cold water circulation loop.

[0123] In combination Figure 11As shown, the embodiment of the present disclosure provides a control device 200 for an air conditioning device, comprising a processor 100 and a memory 101. Optionally, the device can also comprise a communication interface 102 and a bus 103. Wherein the processor 100, the communication interface 102, the memory 101 can complete the communication among each other through the bus 103. The communication interface 102 can be used for information transmission. The processor 100 can call the logical instructions in the memory 101 to execute the control method for the air conditioning device of the above-mentioned embodiment.

[0124] In addition, the logical instructions in the memory 101 described above can be realized in the form of a software function unit and sold or used as an independent product, which can be stored in a computer readable storage medium.

[0125] The memory 101 as a kind of computer readable storage medium can be used to store software programs, computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 100 executes the program instructions / modules stored in the memory 101, thereby executing function application and data processing, i.e. realizing the control method for the air conditioning device in the above-mentioned embodiment.

[0126] The memory 101 can include a program storage area and a data storage area, wherein the program storage area can store an operating system and an application program required by at least one function; the data storage area can store data created according to the use of the terminal equipment, etc. In addition, the memory 101 can include a high-speed random access memory, and can also include a non-volatile memory.

[0127] In combination Figure 12 As shown, the embodiment of the present disclosure provides an air conditioning device 300, comprising an outdoor heat exchange system and an indoor water circulation system, and the above-mentioned control device 200 for the air conditioning device. Wherein the outdoor heat exchange system comprises a compressor, a hot water tank, a first throttling element, an outdoor heat exchanger, an ejector, a cold water tank and a liquid storage tank. The exhaust port of the compressor is connected to the first inlet of the hot water tank, and the first outlet of the hot water tank is connected to the first inlet of the ejector through the first throttling element and the indoor heat exchanger. The outlet of the ejector is connected to the first inlet of the cold water tank and the inlet of the liquid storage tank, and the first outlet of the liquid storage tank is connected to the return port of the compressor, thus forming a refrigerant circulation loop. Wherein the liquid storage tank comprises a second outlet, the second outlet is connected to the second inlet of the cold water tank through a pipeline and a second throttling element, the second outlet of the cold water tank and the second inlet of the ejector are connected, forming a cold water tank temperature adjustment bypass.

[0128] The indoor water circulation system comprises an indoor heat exchanger, the indoor heat exchanger is connected with the cold water tank through a cold water pipeline to form a cold water circulation loop, and the indoor heat exchanger is connected with the hot water tank through a hot water pipeline to form a hot water circulation loop. The indoor heat exchanger comprises one or more groups, and each group of the heat exchanger is arranged in a different space in the room when the indoor heat exchanger comprises multiple groups.

[0129] The control device 200 for the air conditioning device is installed on the body of the air conditioning device. The installation relationship described herein is not limited to being placed in the product, but also includes installation connection with other components of the product, including but not limited to physical connection, electrical connection or signal transmission connection, etc. Those skilled in the art can understand that the control device 200 for the air conditioning device can be adapted to the available product body, and thus other feasible embodiments can be realized.

[0130] The embodiment of the present disclosure provides a computer readable storage medium, which stores computer executable instructions, and the computer executable instructions are configured to execute the control method for the air conditioning device.

[0131] The computer readable storage medium described above can be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

[0132] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, and the computer software product is stored in a storage medium and includes one or more instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium can be a non-transitory storage medium, including a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes, or a transitory storage medium.

[0133] The above description and drawings are illustrative of embodiments of the present disclosure and are not intended to be limiting. Other embodiments can include structural, logical, electrical, process, and other changes. Embodiments are merely representative of possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be varied. Portions and features of some embodiments can be included in, or substituted for, those of other embodiments. Also, words used in this document and claims are words of description, not limitation. As used in the description and claims herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. Additionally, the term "comprises" and variations thereof do not exclude the presence of additional elements or steps. Where the indefinite article "a" or "an" is used, "a" or "an" is to be taken to cover the singular number as well as the plural number, unless the context clearly indicates otherwise. Corresponding language indicating the possibility of a plurality is used in the specification and claims. For example, where the term "comprises" is used, it is taken to mean that the process, method, article, or apparatus includes the named element, but not excluding the presence of one or more other elements. Individual embodiments are discussed in the context of the other embodiments, and vice versa. Where the disclosure discloses a method, product, etc., corresponding to a method embodiment, the description of the method embodiment can be referred to.

[0134] Those skilled in the art can understand that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be realized in electronic hardware, or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods for each specific application to realize the described functions, but such implementation should not be considered beyond the scope of the embodiments of the present disclosure. The skilled person can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described systems, devices, and units can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0135] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to apparatuses, devices, etc.), can be implemented in other manners. For example, the apparatus embodiments described above are merely schematic. For example, the division of the units is merely logical function division. There can be other division manners in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, apparatuses, or units, and can be in electrical, mechanical, or other forms. The units described as separated components can or can not be physically separated, and components displayed as units can or can not be physical units. Some or all of the units can be selected according to actual needs to achieve the embodiments.

[0136] The flowcharts and block diagrams in the drawings show the possible implementation architectures, functions, and operations of the systems, methods, and computer program products according to the embodiments of the present disclosure. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing the specified logical functions. In some alternative implementations, the functions noted in the blocks can occur in different orders than those noted in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and they can sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the drawings, the operations or steps corresponding to different blocks can also occur in different orders than those disclosed in the descriptions, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in reverse order, depending on the functions involved. Each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. An air conditioning apparatus characterized by comprising: The air conditioner comprises: An outdoor heat exchange system comprising a compressor, a hot water tank, a first throttling element, an outdoor heat exchanger, an ejector, a cold water tank, and a liquid storage tank connected in sequence to form a refrigerant circulation loop; The liquid storage tank comprises a second outlet connected to the cold water tank and the ejector through a pipeline and a second throttling element to form a cold water tank temperature adjustment bypass; the cold water tank comprises a first cold water tank and a second cold water tank connected through a pipeline, the first cold water tank is arranged in the refrigerant circulation loop, and the second cold water tank is arranged in the cold water tank temperature adjustment bypass, so that the water temperatures of the two cold water tanks are different; An indoor water circulation system comprising an indoor heat exchanger connected to the cold water tank through a cold water pipeline to form a cold water circulation loop and connected to the hot water tank through a hot water pipeline to form a hot water circulation loop; The indoor heat exchanger comprises one or more groups.

2. The air conditioner of claim 1, wherein The first cold water tank is arranged in the pipeline between the outlet of the ejector of the refrigerant circulation loop and the inlet of the liquid storage tank; The second cold water tank is arranged in the pipeline between the second outlet of the liquid storage tank and the second inlet of the ejector of the cold water tank temperature adjustment bypass; and The second cold water tank is provided with a water outlet, and the first cold water tank is provided with a water inlet.

3. The air conditioning apparatus according to claim 1, wherein Each group of indoor heat exchangers comprises: A first indoor heat exchanger and a second indoor heat exchanger arranged in parallel; The first end and the second end of the first indoor heat exchanger are respectively provided with a first three-way valve and a first stop valve connected to the cold water pipeline; The first end and the second end of the second indoor heat exchanger are respectively provided with a second three-way valve and a second stop valve connected to the hot water pipeline; One end of the first three-way valve is connected between the second stop valve and the first end of the second indoor heat exchanger, and one end of the second three-way valve is connected between the first stop valve and the second end of the first indoor heat exchanger.

4. The air conditioning apparatus according to claim 1, wherein The flow direction of the refrigerant in the cold water tank and the hot water tank is opposite to the flow direction of the water.

5. The air conditioning apparatus according to any one of claims 1 to 4, wherein The air conditioner further comprises: A waste heat recovery device comprising a first refrigerant passage and a second refrigerant passage; The first refrigerant passage is connected to the pipeline between the hot water tank and the first throttling element, and the second refrigerant passage is connected to the pipeline between the liquid storage tank and the compressor.

6. A control method for an air conditioning apparatus, characterized by, The control method is applied to the air conditioner of any one of claims 1 to 5, and the control method comprises: Determining a target operation mode of the air conditioner; According to the target operation mode, determining operation parameters of the outdoor heat exchange system and target states of the cold and hot water circulation loops; Controlling the outdoor heat exchange system to execute the operation parameters, and controlling the cold and hot water circulation loops to execute the target states; The operation parameters of the outdoor heat exchange system comprise the states of the first and second throttling elements.

7. The method of claim 6, wherein, In the case where the target operation mode is unique, according to the target operation mode, determining the operation parameters of the outdoor heat exchange system comprises: In the case where the target operation mode is a refrigeration mode, determining that the first throttling element is in a fully open state and the second throttling element is in a throttling state; In the case where the target operation mode is a heating mode, determining that the first throttling element is in a throttling state and the second throttling element is in a closed state.

8. The method of claim 6, wherein, In the case where the target operation mode is not unique, according to the target operation mode, determining the operation parameters of the outdoor heat exchange system comprises: In a case where the target operation mode includes multiple modes and the multiple modes do not include the defrost mode, it is determined that the second throttling element is in the throttling state, and according to the load, the opening degree of the first throttling element is determined; In a case where the target operation mode includes the heating mode and the defrost mode, it is determined that the first throttling element is in the fully open state and the second throttling element is in the closed state.

9. The method of claim 8, wherein, According to the load, the opening degree of the first throttling element is determined, including: In a case where the heat load is less than the cold load, the opening degree of the first throttling element is determined as the maximum opening degree; In a case where the heat load is greater than the cold load, the opening degree of the first throttling element is determined as the target opening degree; The target opening degree is less than the maximum opening degree.

10. The method of claim 8, wherein, The first inlet and the outlet of the ejector are connected in parallel with a refrigerant bypass pipeline, and the refrigerant bypass pipeline is provided with a fifth on-off valve; the method further includes: In a case where the target operation mode includes the heating mode and the defrost mode and the outdoor environment temperature is greater than a first threshold value, the fifth on-off valve is controlled to be in the conductive state.

11. The method of claim 6, wherein, Each group of indoor heat exchangers includes first and second indoor heat exchangers connected in parallel; According to the target operation mode, the target state of the cold and hot water circulation loops is determined, including: In a case where the target operation modes of the first and second heat exchangers are the same, if the target operation mode is the refrigeration mode, the first three-way valve and the first shut-off valve of the cold water circulation loop are determined to be conductive, the second three-way valve of the hot water circulation loop is determined to be conductive to connect both ends of the first and second heat exchangers, and the second shut-off valve is determined to be cut off; If the target operation mode is the heating mode, the second three-way valve and the second shut-off valve of the hot water circulation loop are determined to be conductive, the first three-way valve of the cold water circulation loop is determined to be conductive to connect both ends of the first and second heat exchangers, and the first shut-off valve is determined to be cut off.

12. The method of claim 11, wherein, In a case where the air outlet of the air conditioner first flows through the first heat exchanger and then flows through the second heat exchanger, according to the target operation mode, the target state of the cold and hot water circulation loops is determined, further including: In a case where the target mode of the first heat exchanger is the dehumidification mode or the defrost mode and the target mode of the second heat exchanger is the heating mode, the first three-way valve of the cold water circulation loop is determined to connect both ends of the first heat exchanger and the cold water pipeline, the first shut-off valve is determined to be conductive, the second three-way valve of the hot water circulation loop is determined to connect both ends of the second heat exchanger and the hot water pipeline, and the second shut-off valve is determined to be conductive.

13. The method according to any one of claims 6 to 12, characterized in that, The cold water tank includes first and second cold water tanks and a cold water bypass, the first and second cold water tanks and the cold water bypass form a cold water circulation bypass, and a sixth on-off valve is arranged on the cold water bypass; the method further includes: In a case where the outdoor environment temperature is less than a second threshold value and the cold water circulation loop is not conductive, the sixth on-off valve is controlled to be conductive.

14. A control apparatus for an air conditioning apparatus comprising a processor and a memory having stored program instructions, characterized in that, The processor is configured to execute the control method for the air conditioning device as claimed in any one of claims 6 to 13 when the program instructions are executed.

15. A storage medium storing program instructions, characterized in that, The program instructions, when executed, perform the control method for the air conditioning device as claimed in any one of claims 6 to 13.

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