Air conditioning apparatus, control method and apparatus for air conditioning apparatus, storage medium

Abstract

The application relates to the technical field of smart home, and discloses an air conditioner device, which comprises an outdoor heat exchange system and an indoor water circulation system. The outdoor heat exchange system comprises a compressor, a hot water tank, a first throttling element, an outdoor heat exchanger, a cold water tank and a liquid storage tank which are sequentially connected to form a refrigerant circulation loop. The indoor water circulation system comprises an indoor heat exchanger, a cold water pipeline and a hot water pipeline. The first end of the indoor heat exchanger is connected to the water outlet of the cold water tank and the water outlet of the hot water tank through the cold water pipeline and the hot water pipeline respectively, and the second end of the indoor heat exchanger is connected to the water inlet of the cold water tank and the water inlet of the hot water tank through a backwater pipeline. A backwater three-way valve is arranged on the backwater pipeline, and the valve direction of the backwater three-way valve is adjusted to control the water flow in the backwater pipeline to flow back to the cold water tank and / or the hot water tank. The device simplifies the structure of the air conditioner device. The application further discloses a control method for the air conditioner device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smart home, for example to an air conditioning device, a control method and device for the air conditioning device, and a storage medium. 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 means such as air supplement and enthalpy increase are used to supplement the deficiency of low-temperature heating condition in winter.

[0003] The air conditioning device in the related art includes a compressor, a four-way reversing valve, an outdoor unit, and a water-fluorine heat exchanger. The indoor heat exchanger is divided into an indoor heating and dehumidification heat recovery end and an indoor refrigeration and dehumidification end. 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 end 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 indoor heat exchanger pipeline structure is complex, which makes the air conditioning device structure complex.

[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 elements 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 device for the air conditioning device, to simplify the structure of the air conditioning device.

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

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

[0011] The indoor water circulation system comprises an indoor heat exchanger, a first end of the indoor heat exchanger is connected with a water outlet of a cold water tank through a cold water pipeline and connected with a water outlet of a hot water tank through a hot water pipeline respectively, and a second end of the indoor heat exchanger is connected with water inlets of the cold water tank and the hot water tank through a return water pipeline respectively;

[0012] The return water pipeline is provided with a return water three-way valve, and a valve direction of the return water three-way valve is adjusted to control water flow in the return water pipeline to return to the cold water tank and / or the hot water tank.

[0013] In some embodiments, the method comprises:

[0014] determining a target operation mode of the air conditioning device and a cold and heat demand corresponding to the target operation mode; controlling a state of the cold and hot water circulation loop and a conduction direction of the return water three-way valve according to the target operation mode; and controlling an opening degree of the return water three-way valve according to the cold and heat demand.

[0015] The method further comprises:

[0016] controlling the opening degrees of the first throttling element and the second throttling element according to the target operation mode.

[0017] In some embodiments, the device comprises a processor and a memory storing program instructions, the processor is configured to execute the aforementioned control method for the air conditioning device when the program instructions are executed.

[0018] In some embodiments, the storage medium stores program instructions, the program instructions are executed to perform the aforementioned control method for the air conditioning device.

[0019] The air conditioning device, the control method and the control device provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] 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, and the cold and hot water return pipelines of the indoor circulation system are shared. In this way, the structure of the indoor water circulation system is more simple. In addition, the indoor heat exchanger can match corresponding cold water or hot water based on user demand. Thus, the diversified needs of users are realized.

[0021] The foregoing general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitation on the embodiments, elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute proportional limitation, and wherein:

[0023] Figure 1is a structural schematic diagram of an air conditioning device provided by an embodiment of the present disclosure;

[0024] Figure 2 is a schematic diagram of water flow direction of an indoor water circulation system when the air conditioning device is cooling, provided by an embodiment of the present disclosure;

[0025] Figure 3 is a schematic diagram of water flow direction of an indoor water circulation system when the air conditioning device is heating, provided by an embodiment of the present disclosure;

[0026] Figure 4 is a schematic diagram of a control method for an air conditioning device, provided by an embodiment of the present disclosure;

[0027] Figure 5 is a schematic diagram of another control method for an air conditioning device, provided by an embodiment of the present disclosure;

[0028] Figure 6 is a schematic diagram of another control method for an air conditioning device, provided by an embodiment of the present disclosure;

[0029] Figure 7 is a schematic diagram of another control device for an air conditioning device, provided by an embodiment of the present disclosure;

[0030] Figure 8 is a schematic diagram of another air conditioning device, provided by an embodiment of the present disclosure.

[0031] Reference signs:

[0032] 11: compressor; 12: hot water tank; 13: first throttling element; 14: outdoor heat exchanger; 15: ejector; 16: cold water tank; 161: first cold water tank; 162: second cold water tank; 17: liquid storage tank; 18: second throttling element; 21: indoor heat exchanger; 211: first indoor heat exchanger; 212: second indoor heat exchanger; 31: first three-way valve; 32: first stop valve; 40: backwater three-way valve; 100: processor; 101: memory; 102: communication interface; 103: bus. DETAILED DESCRIPTION

[0033] In order to enable a person skilled in the art to more fully understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are used only for reference and are not used to limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. 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.

[0034] The terms "first", "second", and the like in the description and claims of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily indicate 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 "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0035] Unless otherwise specified, the term "a plurality of" means two or more.

[0036] In the present disclosure, the character " / " represents a "or" relationship between the objects before and after it. For example, A / B means: A or B.

[0037] 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, three relationships.

[0038] The term "corresponding" can refer to an association or binding relationship. A and B correspond to each other means that A and B have an association or binding relationship.

[0039] 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, 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 cold water tank 16 through the first throttling element 18, the indoor heat exchanger, and the first outlet of the cold water tank. The inlet of the liquid storage tank 17 is connected to the inlet of the liquid storage tank 17. 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.

[0040] The indoor water circulation system comprises an indoor heat exchanger 21. The first end of the indoor heat exchanger is connected to the water outlet of the cold water tank 16 through a cold water pipeline and connected to the water outlet of the hot water tank 12 through a hot water pipeline. The second end is connected to the water inlet of the cold water tank and the hot water tank through a return water pipeline. The return water pipeline is provided with a return water three-way valve 40. The valve direction of the return water three-way valve is adjusted to control the water flow in the return water pipeline to return to the cold water tank and / or the hot water tank.

[0041] In combination Figure 2As shown, when the air conditioning device operates in the cooling mode, the operation process of the outdoor heat exchange system is as follows: the refrigerant is discharged through the compressor exhaust port, flows through the hot water tank (in the cooling 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 to dissipate heat (at this time, the outdoor heat exchanger is a condenser), flows through the cold water tank to exchange heat, and then flows back to the compressor through the liquid accumulator. At the same time, the operation process of the indoor heat exchanger is as follows: the hot water pipeline is cut off, the cold water pipeline is conducted, and the return water three-way valve is connected in the direction of the cold water tank. The cold water flows from the water 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 return water three-way valve, forming a cold water circulation loop.

[0042] In combination Figure 3 As shown, when the air conditioning device operates in the cooling mode, the operation process of the outdoor heat exchange system is as follows: the refrigerant is discharged through the compressor exhaust port, flows through the hot water tank (in the cooling 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 to dissipate heat (at this time, the outdoor heat exchanger is a condenser), flows through the cold water tank to exchange heat, and then flows back to the compressor through the liquid accumulator. At the same time, the operation process of the indoor heat exchanger is as follows: the hot water pipeline is cut off, the cold water pipeline is conducted, and the return water three-way valve is connected in the direction of the cold water tank. The cold water flows from the water 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 return water three-way valve, forming a cold water circulation loop.

[0043] 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, and the cold water return pipeline and the hot water return pipeline of the indoor circulation system are shared. In this way, the structure of the indoor water circulation system is more simple. In addition, the indoor heat exchanger can match corresponding cold water or hot water based on user demand. Thus, the diversified needs of users are realized.

[0044] Optionally, the indoor heat exchanger 21 includes one or more groups, and when the indoor heat exchanger includes multiple groups, each group of heat exchangers is arranged in a different space in the room.

[0045] 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.

[0046] The first end of the first indoor heat exchanger is connected to the cold water pipeline through the first stop valve 32, and the first end of the second indoor heat exchanger is connected to the hot water pipeline through the first three-way valve 31. The second ends of the first indoor heat exchanger and the second indoor heat exchanger are connected to the return water pipeline. The third end of the first three-way valve is connected between the first stop valve and the first end of the first indoor heat exchanger.

[0047] Here, each group of indoor heat exchangers includes two indoor heat exchangers, which are connected to the cold water pipeline or the hot water pipeline through the design of the three-way valve and the stop valve. Furthermore, the two indoor heat exchangers are evaporators or condensers, so that the two indoor heat exchangers are consistent in state, and the heat exchange area is larger than that of a single heat exchanger. Thus, the demand for low-temperature heating or high-temperature cooling can be met.

[0048] In addition, the three-way valve and the stop valve can also control the two indoor heat exchangers to be evaporators and condensers, respectively. In this way, the indoor air can be dehumidified and then heated, avoiding the influence of high humidity on the indoor heating sensation temperature in winter. Alternatively, when defrosting the outdoor heat exchanger in winter, indoor heating can still be ensured, that is, defrosting heating without stopping.

[0049] It should be noted that each group of indoor heat exchangers can include only one heat exchanger, at this time, the indoor heat exchanger has two inlets, one inlet is connected to the cold water pipeline, and the other inlet is connected to the hot water pipeline. The present disclosure does not expand on this case.

[0050] Optionally, the air conditioning device further comprises an ejector 15. The ejector 15 comprises a first inlet, a second inlet and an outlet, the first inlet of which is connected to the outdoor heat exchanger, and the outlet is connected to the first inlet of the cold water tank. The second inlet is connected to the liquid storage tank through the cold water tank and the second throttling element, forming a cold water tank temperature adjustment bypass.

[0051] Here, the cold water tank temperature adjustment bypass is formed by the liquid storage tank and the ejector. In the refrigeration mode, the refrigerant of the refrigerant circulation loop flows through the outdoor heat exchanger, is throttled by the ejector, and then flows into the liquid storage tank after heat exchange in the cold water tank. Part of the refrigerant in the liquid storage tank flows through the cold water tank again for heat exchange under the condition that the second throttling element is opened and throttled, and then flows into the second inlet of the ejector after throttling and returns to the liquid storage tank (i.e., part of the refrigerant flows through the cold water tank temperature adjustment bypass).

[0052] In the refrigeration mode, the cold water tank temperature adjustment bypass is turned on, and the temperature of the refrigerant is further reduced to cool the cold water in the cold water tank. Here, the cold water tank divides the inner cavity into two cavities by a partition, and the two cavities are connected through a hole. Alternatively, the cold water tank includes two independent tank bodies, and the two tank bodies are connected 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, which further reduces the load of the compressor and improves the energy efficiency of the air conditioning device. In this way, while the cold water tank temperature is adjusted by using the cold energy of the refrigerant, the adjustment of the different evaporation temperatures of the refrigerant is also realized. Thus, the whole system is more energy-saving and efficient.

[0053] The cold water tank 16 includes a first cold water tank 161 and a second cold water tank 162. The first cold water tank and the second cold water tank are connected through a pipeline, the second cold water tank is provided with a water outlet, and the first cold water tank is provided with a water inlet.

[0054] The first cold water tank includes a first inlet and a first outlet, the first inlet is connected to the outlet of the ejector, and the first outlet is connected to the inlet of the liquid storage tank.

[0055] The second cold water tank includes a second inlet and a second outlet, the second inlet is connected to the second outlet of the liquid storage tank, the second outlet is connected to the second inlet of the ejector, and a second throttling element is arranged in the pipeline between the second outlet of the liquid storage tank and the second inlet of the second cold water tank.

[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 a 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 through the water outlet, 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, 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.

[0059] 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.

[0060] Optionally, a water pump is arranged on the water return pipeline. In this way, the cold water circulation system and the hot water circulation system can share one water pump to realize water circulation, which is beneficial to save resources.

[0061] Optionally, the indoor water circulation system further includes other terminal equipment connected with the cold water tank and the hot water tank. The other terminal equipment includes a water heater, a floor heating device, etc.

[0062] Based on the foregoing air conditioning device, in combination with Figure 4 As shown in the drawings, the embodiment of the present disclosure provides a control method for an air conditioning device, which comprises the following steps:

[0063] S101, the processor determines the target operation mode of the air conditioning device and the cold and heat demand corresponding to the target operation mode.

[0064] S102, the processor controls the state of the cold and hot water pipelines and the conduction direction of the water return three-way valve according to the target operation mode.

[0065] S103, the processor controls the opening degree of the water return three-way valve according to the cold and heat demand.

[0066] In the embodiment of the present disclosure, the target operation mode of the air conditioning device includes multiple modes, such as the refrigeration mode, the heating mode, the reheating and dehumidification mode, the non-stop defrosting mode, etc. And the target mode may be unique or not unique. For example, in winter, when the heating mode is running, the reheating and dehumidification mode or the non-stop defrosting mode may also be running synchronously. For example, in summer, when the refrigeration mode is running, 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 and the cold and heat demand corresponding to the target operation mode can be determined by the user's demand for the intelligent home appliance device. For example, the target temperature, the current temperature, the operation mode, etc. of the intelligent home appliance device are obtained; among them, the intelligent home appliance device includes the air conditioner, the water heater, the floor heating device, etc. and the terminal equipment connected with the cold water and the hot water. The cold and heat demand, i.e. the cold and heat load, can be calculated by the current temperature and the target temperature.

[0067] Further, based on the target operation mode, the states of the cold water circulation loop and the hot water circulation loop are controlled. When the target operation mode is unique, such as the heating mode or the cooling mode, only the hot water circulation loop or the cold water circulation loop needs to be controlled to be turned on. When the operation mode is diversified and the state of the indoor heat exchanger is different, both the cold water circulation loop and the hot water circulation loop need to be controlled to be turned on. Specifically, as described above, the on or off state of the cold water circulation loop and the hot water circulation loop depends on the state of the return water three-way valve, the first shutoff valve, and the first three-way valve. In different operation modes, the states of the valves are different. Therefore, by the target operation mode, the states of the cold water pipe and the hot water pipe and the on direction of the return water three-way valve are controlled.

[0068] Meanwhile, the cold and hot demand amounts are different, and the opening degrees of the corresponding return water three-way valves are different. Specifically, the cold and hot demand amounts determine the return water amounts of the cold water tank and the hot water tank, and thus the valve degrees of the return water three-way valve in different on directions are different. For example, when the cold demand amount is greater than the hot demand amount, the valve opening degree of the return water three-way valve in the on direction with the cold water tank is greater than the valve opening degree in the on direction with the hot water tank. When the cold and hot demand amounts are the same, the valve opening degrees of the return water three-way valve in the two directions are the same.

[0069] In addition, it needs to be noted that in the case of unique cold / heat demand amount, that is, only the hot demand amount or the cold demand amount exists, the opening degree of the corresponding on direction of the return water three-way valve can correspond to the hot / cold demand amount. For example, the valve opening degree corresponding to the hot / cold demand amount can be obtained by table lookup. That is, the heat exchange efficiency can be adjusted by adjusting the return water speed. In some embodiments, the flow rate of the hot / cold water can also be adjusted by adjusting the rotating speed of the water pump. At this time, the opening degree of the return water three-way valve can be the maximum opening degree.

[0070] By adopting the control method for the air conditioning device provided in the embodiments of the present disclosure, the indoor heat exchanger can match the corresponding cold water pipe and / or hot water pipe to be turned on based on the user demand (i.e., the target operation mode), and control the opening degree of the on direction valve of the return water three-way valve based on the cold and hot demand amounts. Thus, the return water amount of the cold water tank and / or the hot water tank is controlled, so as to meet the indoor cooling and / or heating demand.

[0071] Based on the foregoing air conditioning device, in combination with Figure 5 The embodiments of the present disclosure provide another control method for an air conditioning device, which comprises the following steps:

[0072] S101, a processor determines a target operation mode of an air conditioning device and a cold and hot demand amount corresponding to the target operation mode.

[0073] S121, the processor controls the cold water pipe or the hot water pipe corresponding to the target operation mode to be turned on and controls the valve of the return water three-way valve corresponding to the target operation mode to be turned on in the case of unique target operation mode.

[0074] S122, the processor controls the cold water pipeline and the hot water pipeline to be conducted, and the first valve direction and the second valve direction of the return water three-way valve are both conducted in the case that the running mode is not unique.

[0075] The heating mode corresponds to the first valve direction of the return water three-way valve, and the cooling mode corresponds to the second valve direction of the three-way valve.

[0076] S103, the processor controls the opening degree of the return water three-way valve according to the cold and heat demand.

[0077] Here, the target running mode unique means 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 the indoor heat exchangers are multiple groups. That is, the multiple indoor heat exchangers are all evaporators or the indoor heat exchangers are all condensers. Or, the target running mode unique means that the cold and heat demands of the terminal equipment and the indoor heat exchangers are consistent in the case that the air conditioning device is connected to other terminal equipment.

[0078] The target running mode unique means that the indoor heat exchanger is an evaporator or a condenser, that is, the target running mode is a cooling mode or a heating mode. The heating mode corresponds to the hot water pipeline being conducted, and the first valve direction of the return water three-way valve being conducted (that is, the two ends of the return water three-way valve connecting the second end of the indoor heat exchanger and the water inlet of the hot water tank are conducted). The cooling mode corresponds to the cold water pipeline being conducted, and the second valve direction of the return water three-way valve being conducted (that is, the two ends of the return water three-way valve connecting the second end of the indoor heat exchanger and the water inlet of the cold water tank are conducted).

[0079] The running mode not unique means that the indoor heat exchanger has multiple modes. Or, the running mode is a reheating and dehumidifying mode, which means that the indoor heat exchanger also has multiple modes. That is, in this case, part of the indoor heat exchanger is an evaporator, and part of the indoor heat exchanger is a condenser. At this time, the cold water pipeline and the hot water pipeline need to be conducted, and the first valve direction and the second valve direction of the return water three-way valve need to be conducted. That is, the water flow in the return water pipeline returns to the cold water tank and the hot water tank, realizing the cold and hot water double circuit circulation.

[0080] Optionally, in steps S121 and S122, the processor controls the cold water pipeline and / or the hot water pipeline to be conducted, including:

[0081] In the case that the target running modes of the first heat exchanger and the second heat exchanger are the same, if the running mode is a cooling mode, the processor controls the first stop valve to be conducted, and the first three-way valve is in a first state; if the running mode is a heating mode, the processor controls the first stop valve to be cut off, and the first three-way valve is in a second state.

[0082] In the case that the running modes of the first heat exchanger and the second heat exchanger are not the same, the processor controls the first stop valve to be conducted, and the first three-way valve is in a third state.

[0083] The first state refers to a state in which the first three-way valve connects two ends of the first heat exchanger and the second heat exchanger to be in conduction; the second state refers to a state in which three ends of the first three-way valve are in conduction; and the third state refers to a state in which the first three-way valve connects two ends of the second heat exchanger and the hot water pipeline to be in conduction.

[0084] Here, each group of indoor heat exchangers includes two heat exchangers, a first heat exchanger and a second heat exchanger. And the air conditioner airflow first flows through the first heat exchanger and then flows through the second heat exchanger. In this way, the first heat exchanger and the second heat exchanger of each group of indoor heat exchangers can have different operating modes, and thus the air conditioning device can realize the non-stop defrosting mode or the reheating dehumidifying mode. The operating modes of the first heat exchanger and the second heat exchanger are different from the operating mode of the air conditioning device. For example, when the air conditioning device operates in the reheating dehumidifying mode, the first heat exchanger operates in the dehumidifying mode, and the second heat exchanger operates in the heating mode.

[0085] Specifically, when the 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 first heat exchanger and the second heat exchanger are both evaporators. At this time, the first stop valve needs to be controlled to be in conduction, and the first three-way valve connects two ends of the first heat exchanger and the second heat exchanger to be in conduction (i.e., the first three-way valve is in the first state). In this way, the first heat exchanger and the second heat exchanger are both in communication with the cold water tank. If the target operating mode is the heating mode, the first heat exchanger and the second heat exchanger are both condensers. At this time, the first stop valve is controlled to be cut off, and three ends of the first three-way valve are in conduction. Then the first heat exchanger and the second heat exchanger are both in communication with the hot water tank.

[0086] When the operating modes of the first heat exchanger and the second heat exchanger are different, it indicates that the first heat exchanger operates in the dehumidifying mode or the defrosting mode (at this time, the air conditioner airflow first flows through the first heat exchanger, and the first heat exchanger is an evaporator), and the second heat exchanger operates in the heating mode. In this case, the first stop valve is controlled to be in conduction (i.e., the first heat exchanger and the hot water pipeline are in conduction), and the first three-way valve is controlled to connect two ends of the second heat exchanger and the hot water pipeline to be in conduction (i.e., the first three-way valve is in the third state). In this way, the operating modes of the first heat exchanger and the second heat exchanger are different, so as to realize defrosting or dehumidifying during indoor heating. That is, the air conditioning device operates in the non-stop defrosting + heating mode, or operates in the reheating dehumidifying mode.

[0087] Optionally, in step S103, the processor controls the opening degree of the return water three-way valve according to the cold and heat demand amount, including:

[0088] In the case where only heating demand or refrigeration demand exists indoors, the processor controls the opening degree of the corresponding valve of the return water three-way valve to be maximum.

[0089] In the case where heating demand and refrigeration demand exist indoors, the processor controls the ratio of the opening degrees of the first valve and the second valve of the return water three-way valve according to the ratio of the cold demand amount and the heat demand amount.

[0090] Here, when the operation mode of the air conditioning device only includes the heating mode or the cooling mode, there is only a heating demand or a cooling demand in the room. That is, only the hot water pipeline or the cold water pipeline is conducted, and the return water pipeline is connected with the hot water tank or the cold water tank. At this time, the valve of the return water three-way valve corresponding to the operation mode is opened to the maximum, so as to ensure that the water quantity of the hot water tank or the cold water tank is sufficient. When the water quantity is sufficient, the heating demand or the cooling demand is mainly realized through the compressor and the throttling element. When the air conditioning device operates in multiple modes or operates in the reheating dehumidification mode, the heating demand and the cooling demand coexist in the room. At this time, the opening degrees of the first valve and the second valve of the return water three-way valve affect the water quantity of the hot water tank and the cold water tank. When the water quantity is insufficient, there is a problem that the user demand cannot be met. Therefore, in order to avoid the situation that the water quantity of the water tank is insufficient due to improper distribution of the return water, the ratio of the opening degree of the second valve to the opening degree of the first valve is controlled to be the ratio of the cooling demand quantity to the heating demand quantity. In this way, the return water three-way valve distributes the return water quantity according to the demand, so as to ensure the cooling and heating demands in the room.

[0091] In combination Figure 6 As shown in the figure, the embodiment of the present disclosure provides another control method for an air conditioning device, which comprises:

[0092] S101, the processor determines a target operation mode of the air conditioning device and a cooling and heating demand quantity corresponding to the target operation mode.

[0093] S102, the processor controls the state of the cold and hot water pipelines and the conduction direction of the return water three-way valve according to the target operation mode.

[0094] S103, the processor controls the opening degree of the return water three-way valve according to the cooling and heating demand quantity.

[0095] S204, the processor controls the opening degrees of the first throttling element and the second throttling element according to the cooling and heating demand quantity.

[0096] Here, 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 conducted also determines the state of the cold water tank temperature adjustment bypass, that is, the state of the second throttling element. Therefore, the opening degrees of the first and second throttling elements are controlled based on the cooling and heating demand quantity.

[0097] Specifically, when there is only a cooling demand in the room, the opening degree of the first throttling element is determined to be maximum, and the opening degree of the second throttling element is less than the maximum opening degree (i.e. the second throttling element is in a throttling state). At this time, the water in the hot water tank is not circulated, so the hot water tank plays a limited role as a condenser. Therefore, the outdoor heat exchanger needs to be used as a condenser, i.e. the first throttling element is fully open and does not play a throttling role. Further, in the cooling mode, the second throttling element is in a 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.

[0098] Similarly, when there is only a heating demand in the room, the opening degree of the first throttling element is determined to be less than the maximum opening degree (i.e. in a throttling state), and the opening degree of the second throttling element is zero (i.e. in a closed state). Because the cold water circulation pipeline is not connected, the water in the cold water tank is not circulated, so the second throttling element is closed. At the same time, the water in the cold water tank is not circulated, so the cold water tank plays a limited role as an evaporator. Therefore, the first throttling element is in a throttling state to make the outdoor heat exchanger act as an evaporator. Thus, the heating energy efficiency of the air conditioning device is improved to meet the user's demand.

[0099] In addition, when there is a cooling demand and a heating demand in the room, if the heating demand is less than the cooling demand, the opening degree of the first throttling element is controlled to be the maximum opening degree, and the opening degree of the second throttling element is less than the maximum opening degree. If the heating demand is greater than the cooling demand, the opening degree of the first throttling element is controlled to be a target opening degree, and the opening degree of the second throttling element is less than the maximum opening degree. The target opening degree is less than the maximum opening degree.

[0100] Here, when the heating demand is greater than the cooling demand, it indicates that the heating demand of the condenser in the air conditioning device is greater than the cooling demand of the evaporator. Therefore, the first throttling element plays a throttling role (i.e. the opening degree of the first throttling element is less than the maximum opening degree) to make the outdoor heat exchanger act 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 cooling demand of the evaporator. Similarly, when the heating demand is less than the cooling demand, it indicates that the heating demand of the condenser in the air conditioning device is less than the cooling demand of the evaporator. Therefore, the first throttling element does not play a throttling role (i.e. the opening degree of the first throttling element is maximum) to make the indoor heat exchanger act as a condenser.

[0101] It should be noted that the refrigeration demand described herein refers to the active demand of the user to lower the indoor temperature or to dehumidify the indoor. It does not include the passive demand caused by the defrosting of the outdoor heat exchanger. Therefore, when the indoor has both the refrigeration demand and the heating demand, and the refrigeration demand is caused by the operation of the defrosting mode of the air conditioning device, the first throttling element is in the fully open state, and the second throttling element is in the closed state. At this time, because the outdoor heat exchanger is frosted, the indoor heat exchanger should be a condenser to melt the frost layer. Therefore, the first throttling element is in the fully open state. In addition, defrosting indicates that the outdoor heat exchanger is seriously frosted and iced, which generally occurs in cold seasons. The indoor usually operates in the heating mode. Therefore, the cold water circulation circuit does not work, and the opening degree of the second throttling element is zero.

[0102] In combination Figure 7 As shown in the accompanying drawings, the embodiment of the present disclosure provides a control device 200 for an air conditioning device, which comprises 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 and 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 in the above-mentioned embodiment.

[0103] 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.

[0104] The memory 101 as a 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 performing function applications and data processing, i.e. realizing the control method for the air conditioning device in the above-mentioned embodiment.

[0105] 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 application programs required by at least one function; the data storage area can store data created according to the use of the terminal device, etc. In addition, the memory 101 can include a high-speed random access memory, and can also include a non-volatile memory.

[0106] In combination Figure 8As shown, the embodiment of the present disclosure provides an air conditioner device 300, comprising: an air conditioner device body, and the above-mentioned control device 200 for air conditioner device. The control device 200 for air conditioner device is installed on the product body. The installation relationship expressed herein is not limited to placing 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 air conditioner device can be adapted to the feasible product body, and then realize other feasible embodiments.

[0107] 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 above-mentioned control method for air conditioner device.

[0108] The above-mentioned computer readable storage medium can be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

[0109] The technical scheme of the embodiment of the present disclosure can be embodied in the form of a software product. 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, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes, or a transitory storage medium.

[0110] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0111] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0112] 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 described apparatus embodiments can be implemented only in a form of a logical function, and can be implemented by using a manner such as software (for example, a computer program) or a combination of hardware and software. In a component, a plurality of components, or a combination thereof, can be implemented. In some embodiments, a plurality of components or a combination thereof can be integrated in a machine to realize an apparatus according to the embodiments. In some embodiments, a plurality of components or a combination thereof can be integrated in an apparatus, so as to constitute a system.

[0113] The flowcharts and block diagrams in the drawings show the possible implementation architectures, functions and operations of the system, method and computer program product 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 containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions noted in the blocks can occur in an order different from that noted in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can 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 an order different from that 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 sometimes they can 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 device, characterized in that, include: The outdoor heat exchange system includes a refrigerant circulation loop formed by sequentially connecting a compressor, a hot water tank, a first throttling element, an outdoor heat exchanger, a cold water tank, and a liquid storage tank. The indoor water circulation system includes an indoor heat exchanger, the first end of which is connected to the outlet of the cold water tank via a cold water pipe and the outlet of the hot water tank via a hot water pipe, and the second end of which is connected to the inlet of the cold water tank and the inlet of the hot water tank via a return water pipe. The return water pipe is equipped with a return water three-way valve. Adjusting the valve direction of the return water three-way valve controls the water flow in the return water pipe back to the cold water tank and / or hot water tank. The indoor heat exchanger includes: a first indoor heat exchanger and a second indoor heat exchanger, which are connected in parallel; The first end of the first indoor heat exchanger is connected to the cold water pipeline via a first shut-off valve; the first end of the second indoor heat exchanger is connected to the hot water pipeline via a first three-way valve; the second ends of both the first and second indoor heat exchangers are connected to the return water pipeline; and the third end of the first three-way valve is connected between the first shut-off valve and the first end of the first indoor heat exchanger.

2. The air conditioning device according to claim 1, characterized in that, Also includes: The ejector includes a first inlet, a second inlet, and an outlet, wherein the first inlet is connected to an outdoor heat exchanger and the outlet is connected to the first inlet of a cold water tank. The second inlet is connected to the liquid storage tank via the cold water tank and the second throttling element, forming a cold water tank temperature regulation bypass.

3. The air conditioning device according to claim 2, characterized in that, The cold water tank includes: The first cold water tank includes a first inlet and a first outlet, wherein the first inlet is connected to the outlet of the ejector and the first outlet is connected to the inlet of the storage tank; The second cold water tank includes a second inlet and a second outlet. The second inlet is connected to the second outlet of the liquid storage tank, and the second outlet is connected to the second inlet of the ejector. A second throttling element is disposed in the pipeline between the second outlet of the liquid storage tank and the second inlet of the second cold water tank. The first cold water tank and the second cold water tank are connected by a pipeline. The second cold water tank is equipped with an outlet, and the first cold water tank is equipped with an inlet.

4. A control method for an air conditioning unit, characterized in that, The control method, applied to the air conditioning device according to any one of claims 1 to 3, comprises: Determine the target operating mode of the air conditioning unit and the corresponding cooling and heating demand for the target operating mode; Based on the target operating mode, control the status of the cold and hot water pipes and the conduction direction of the return water three-way valve; and, Control the opening degree of the return water three-way valve according to the demand for hot and cold water.

5. The method according to claim 4, characterized in that, The control of the status of cold and hot water pipes and the conduction direction of the return water three-way valve according to the target operating mode includes: When there is only one target operating mode, control the cold water pipe or hot water pipe corresponding to the target operating mode to be open, and control the valve direction of the return water three-way valve corresponding to the target operating mode to be open; wherein, the heating mode corresponds to the first valve direction of the return water three-way valve, and the cooling mode corresponds to the second valve direction of the three-way valve. When the target operating mode is not unique, the cold water pipeline and the hot water pipeline are connected, and the first valve direction and the second valve direction of the return water three-way valve are both connected.

6. The method according to claim 5, characterized in that, Controlling the continuity of cold water and / or hot water pipes, including: When the target operating modes of the first heat exchanger and the second heat exchanger are the same, if the target operating mode is the cooling mode, the first shut-off valve is opened and the first three-way valve is in the first state; if the target operating mode is the heating mode, the first shut-off valve is closed and the first three-way valve is in the second state. When the target operating modes of the first heat exchanger and the second heat exchanger are different, the first shut-off valve is opened and the first three-way valve is in the third state. The first state refers to the state where the two ends of the first three-way valve connected to the first heat exchanger and the second heat exchanger are conductive; the second state refers to the state where all three ends of the first three-way valve are conductive; and the third state refers to the state where the two ends of the first three-way valve connected to the second heat exchanger and the hot water pipeline are conductive.

7. The method according to claim 4, characterized in that, Control the opening of the return water three-way valve according to the demand for hot and cold water, including: When there is only a heating or cooling demand indoors, the opening degree of the corresponding valve direction of the return water three-way valve should be kept at its maximum. When there are both heating and cooling needs indoors, the opening ratio of the second valve and the first valve of the return water three-way valve is controlled according to the ratio of cooling demand to heating demand.

8. A control device for an air conditioning unit, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute, when running the program instructions, the control method for an air conditioning device as described in any one of claims 4 to 7.

9. A storage medium storing program instructions, characterized in that, When the program instructions are executed, they perform the control method for an air conditioning device as described in any one of claims 4 to 7.

Images