Air conditioner control method, device, equipment and storage medium

Abstract

The present invention relates to the technical field of air conditioners, and in particular to an air conditioner control method, device, equipment, and storage medium. The present invention comprehensively determines the current water temperature regulation range of the air conditioner based on the outlet water temperature of a hydraulic module in the air conditioner and the outdoor ambient temperature when the air conditioner is operating in a heating and on mode, thereby facilitating subsequent targeted selection of how to adjust the opening of a throttling element. Simultaneously, the opening change value of each throttling element is calculated based on the device temperature of the air conditioner, accurately adjusting the pipe pressure difference between the heating capacity of the air conditioner indoor unit or the hydraulic module and the outdoor unit. This avoids the technical problem of the hydraulic module and the indoor unit of a multi-split air conditioner in the prior art being easily affected when the heating capacity of both is simultaneously affected by the heating operation, thereby improving the user experience when heating or heating the air conditioner and enhancing the user's comfort during use.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an air conditioner control method, device, equipment and storage medium. Background Art

[0002] Multi-split water heaters are generally equipped with several air-conditioning indoor units and one or more hydraulic modules. The air-conditioning indoor units are used to regulate the room temperature, and the hydraulic modules are used to produce hot water. However, during operation, if the water temperature of the hydraulic module is low, due to the low pressure, the refrigerant will flow through the hydraulic module in large quantities due to the pressure difference in the pipeline, thereby affecting the heating capacity of the air-conditioning indoor unit. Similarly, if the water temperature of the hydraulic module is high, due to the high pressure, the refrigerant will flow through the air-conditioning indoor unit in large quantities due to the pressure difference in the pipeline, thereby affecting the heating capacity of the hydraulic module and failing to meet the user's usage needs.

[0003] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of the present invention is to provide an air conditioner control method, device, equipment and storage medium, aiming to solve the technical problem that when the hydraulic module and the indoor unit of the multi-split air conditioner of the prior art are operating simultaneously for heating, the heating capacity of both is easily affected.

[0005] To achieve the above-mentioned object, the present invention provides an air conditioner control method, the air conditioner control method being applied to a multi-split heating air conditioner, the multi-split heating air conditioner comprising an outdoor unit, a plurality of indoor air conditioners, and a hydraulic module, the outdoor unit being connected to each indoor air conditioner and the hydraulic module, respectively, and a throttling element for controlling the flow of refrigerant being provided between the outdoor unit, each indoor air conditioner, and the hydraulic module;

[0006] The method comprises the following steps:

[0007] When the air conditioner is operating in a heating mode, obtaining the water outlet temperature of the hydraulic module, the outdoor ambient temperature of the area where the outdoor unit is located, and the device temperature of the air conditioner;

[0008] Determining the water temperature adjustment range of the air conditioner according to the outlet water temperature and the outdoor ambient temperature;

[0009] Determining the opening change value of each throttling element according to the equipment temperature and the water temperature adjustment range;

[0010] The opening of each throttling element is adjusted according to the opening change value.

[0011] Optionally, a first throttling element is provided between the outdoor unit and each indoor unit of the air conditioner, a second throttling element is provided between the outdoor unit and the hydraulic module, the opening change value includes a first opening change value corresponding to the first throttling element and a second opening change value corresponding to the second throttling element, the outdoor unit includes a compressor, the indoor unit of the air conditioner includes an indoor heat exchanger, and the device temperature includes an exhaust temperature of the compressor and a coil temperature of the indoor heat exchanger;

[0012] The step of determining the opening change value of each throttling element according to the device temperature and the water temperature adjustment range includes:

[0013] Obtaining a target exhaust temperature of the compressor, an average coil temperature of the indoor heat exchanger of each air conditioner in a startup state, and a target coil temperature;

[0014] calculating a first temperature difference between the exhaust temperature and the target exhaust temperature, and determining a first temperature difference interval in which the first temperature difference lies;

[0015] Calculating a second temperature difference between the mean coil temperature and the target coil temperature, and determining a second temperature difference interval in which the second temperature difference lies;

[0016] When the water temperature adjustment interval is a low water temperature adjustment interval, determining a change value of the opening degree of the first throttling element according to the first temperature difference interval and the second temperature difference interval;

[0017] The opening change value of the second throttling element is determined according to the second temperature difference range.

[0018] Optionally, the hydraulic module includes an electric auxiliary heating device;

[0019] After determining the opening change value of the second throttling element according to the second temperature difference range, the method further includes:

[0020] At preset intervals, obtaining the temperature rise difference of the outlet water temperature of the hydraulic module;

[0021] When the temperature rise difference is less than the first temperature, the electric auxiliary heating device is started to heat the hydraulic module.

[0022] Optionally, after calculating a second temperature difference between the mean coil temperature and the target coil temperature and determining a second temperature difference interval in which the second temperature difference lies, the method further includes:

[0023] When the water temperature adjustment interval is a normal water temperature adjustment interval, determining a change value of the opening degree of the first throttling element according to the first temperature difference interval and the second temperature difference interval;

[0024] The opening change value of the second throttling element is determined according to the first temperature difference range.

[0025] Optionally, after calculating a second temperature difference between the mean coil temperature and the target coil temperature and determining a second temperature difference interval in which the second temperature difference lies, the method further includes:

[0026] When the water temperature adjustment interval is a high water temperature adjustment interval, determining a change value of the opening degree of the second throttling element according to the second temperature difference interval;

[0027] The opening change value of the first throttling element is determined according to a preset opening extreme value.

[0028] Optionally, the air conditioner indoor unit includes a fan for controlling the air supply volume;

[0029] The air conditioner control method further includes:

[0030] When the water temperature adjustment range is a high water temperature adjustment range, adjusting the speed of the fan according to the second temperature difference range;

[0031] At preset intervals, obtaining the temperature rise difference of the outlet water temperature of the hydraulic module;

[0032] When the temperature rise difference is less than the first temperature, the electric auxiliary heating device is started to heat the hydraulic module.

[0033] Optionally, after starting the electric auxiliary heating device, the method further includes:

[0034] At preset intervals, obtaining the temperature rise difference of the outlet water temperature of the hydraulic module;

[0035] When the temperature rise difference is less than the first temperature, controlling the fan to stop running;

[0036] The air conditioner indoor unit is controlled to enter a standby state until the hydraulic module reaches a temperature and stops.

[0037] In addition, to achieve the above-mentioned object, the present invention further provides an air conditioner control device, the air conditioner control device comprising:

[0038] an acquisition module, configured to acquire the outlet water temperature of the hydraulic module, the outdoor ambient temperature of the area where the outdoor unit is located, and the device temperature of the air conditioner when the air conditioner operates in a heating mode;

[0039] a judgment module, configured to judge the water temperature adjustment range of the air conditioner according to the outlet water temperature and the outdoor ambient temperature;

[0040] a calculation module, configured to determine a change in the opening of each throttling element according to the device temperature and the water temperature adjustment range;

[0041] The adjustment module is used to adjust the opening of each throttling element according to the opening change value.

[0042] In addition, to achieve the above-mentioned purpose, the present invention also proposes an air conditioner control device, which includes: a memory, a processor, and an air conditioner control program stored on the memory and runnable on the processor, and the air conditioner control program is configured to implement the steps of the air conditioner control method described above.

[0043] In addition, to achieve the above-mentioned purpose, the present invention further proposes a storage medium, on which an air conditioner control program is stored. When the air conditioner control program is executed by a processor, the steps of the air conditioner control method described above are implemented.

[0044] When the air conditioner is operating in the heating and opening mode, the present invention comprehensively judges the current water temperature regulation range of the air conditioner by the outlet water temperature of the hydraulic module in the air conditioner and the outdoor ambient temperature, so as to facilitate the subsequent targeted selection of how to adjust the opening of the throttling element. At the same time, the opening change value of each throttling element is calculated according to the equipment temperature of the air conditioner, and the pipeline pressure difference between the heating capacity of the air conditioner indoor unit or the hydraulic module and the outdoor unit is accurately adjusted, thereby avoiding the technical problem of the hydraulic module and the indoor unit of the multi-split air conditioner in the prior art that the heating capacity of both is easily affected when the hydraulic module and the indoor unit of the air conditioner are operating in the heating mode at the same time, thereby improving the user experience when making hot water or heating, and improving the user comfort when using. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 1 is a schematic structural diagram of an air conditioner control device in a hardware operating environment according to an embodiment of the present invention;

[0046] Figure 2 1 is a flow chart of a first embodiment of an air conditioner control method according to the present invention;

[0047] Figure 3 A schematic structural diagram of a multi-split air conditioner according to an embodiment of an air conditioner control method of the present invention;

[0048] Figure 4 1. It is a flow chart of a second embodiment of the air conditioner control method of the present invention;

[0049] Figure 5 FIG. 1 is a structural block diagram of a first embodiment of an air conditioner control device according to the present invention.

[0050] Description of Figure Numbers:

[0051] Label name Label name 1 outdoor unit 16 pressure valve 2 Air conditioner indoor unit 31 Water side heat exchanger 3 Hydraulic module 32 water pump 11 compressor 33 Manual valve 12 Vapor-liquid separator 34 Electric auxiliary heating device 13 Four-way valve 35 Reversing device 14 Outdoor heat exchanger 36 water tank 15 Throttling element 37 Heating coil

[0052] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0053] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0054] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of an air conditioner control device in the hardware operating environment involved in the embodiment of the present invention.

[0055] like Figure 1 As shown, the air conditioner control device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the user interface 1003 may optionally include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM) or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk storage. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0056] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation on the air conditioner control device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0057] like Figure 1 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module and an air conditioner control program.

[0058] exist Figure 1 In the air conditioner control device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the air conditioner control device of the present invention can be set in the air conditioner control device, and the air conditioner control device calls the air conditioner control program stored in the memory 1005 through the processor 1001, and executes the air conditioner control method provided by the embodiment of the present invention.

[0059] The embodiment of the present invention provides an air conditioner control method, referring to Figure 2 , Figure 2 FIG1 is a flow chart of a first embodiment of an air conditioner control method according to the present invention.

[0060] In this embodiment, the air conditioner control method includes the following steps:

[0061] Step S10: When the air conditioner operates in a heating mode, the outlet water temperature of the hydraulic module, the outdoor ambient temperature of the area where the outdoor unit is located, and the device temperature of the air conditioner are obtained.

[0062] It should be noted that the execution subject of this embodiment may be the air conditioner device, which has functions such as data processing, data communication, and program execution. The air conditioner device may be a controller for a multi-split air conditioner. Of course, other devices with similar functions may also be used, and these implementation conditions do not limit this. For ease of explanation, this embodiment uses a controller for a multi-split air conditioner as an example.

[0063] It is worth noting that the air conditioner in this embodiment refers to a multi-split air conditioner. A multi-split air conditioner is an air conditioner in which an external unit is connected to multiple internal units, and can simultaneously adjust parameters such as air temperature, humidity, cleanliness and air flow rate in multiple rooms, including but not limited to cooling, heating and fresh air circulation modes.

[0064] It should be noted that the reference Figure 3 , the multi-split air conditioner in this embodiment includes an outdoor unit, an air-conditioning indoor unit and a hydraulic module, the outdoor unit is respectively connected to each air-conditioning indoor unit and the hydraulic module, the outdoor unit 1 includes: a compressor 11, a vapor-liquid separator 12, a four-way valve 13, an outdoor heat exchanger 14, a throttling element 15 and the pressure valve 16, wherein the throttling element 15 includes a main capillary tube and a plurality of electronic expansion valves, the number of throttling elements 15 corresponds to the sum of the number of air-conditioning indoor units 2 connected to the outdoor unit and the number of hydraulic modules 3 plus one, that is, the sum of the number of main capillaries and the number of branches, and an electronic expansion valve is provided on the branch corresponding to each air-conditioning indoor unit 2 and the branch corresponding to the hydraulic module 3. In this embodiment, the throttling element opening adjusted refers to the opening of the electronic expansion valve. In this application, a throttling element with the same or similar function, such as an expansion tube or a throttling valve, can also be used instead of the electronic expansion valve. This embodiment does not impose specific restrictions on this.

[0065] It can be understood that in the multi-split air conditioner of this embodiment, the output end of the compressor 11 is connected to the first connecting port of the four-way valve 13, and is connected to the pressure valve 16 (low-pressure valve) through the second connecting port of the four-way valve 13, so as to facilitate the delivery to the air-conditioning indoor unit 2 or the hydraulic module 3 for heat exchange. After the heat exchange is completed, it returns to the electronic expansion valve through the pressure valve 16 (high-pressure valve), and is then delivered to the outdoor heat exchanger 14 through the main capillary for evaporation and heat absorption. At this time, the outdoor heat exchanger 14 is used as an evaporator, and finally flows through the third connecting port and the fourth connecting port of the four-way valve 13 through the vapor-liquid separator 12 and returns to the compressor 11 for the next heating. The number of high-pressure valves is twice the number of electronic expansion valves.

[0066] In addition, the hydraulic module in this embodiment includes: a heat exchange module, a reversing device, a first water path and a second water path, wherein the reversing device can be a three-way valve, and the heat exchange module includes: a water side heat exchanger 31, a water pump 32, a manual valve 33 and an electric auxiliary heating device 34, wherein the manual valve 33 can be a manual ball valve, or other devices with the same or similar switching valve functions, the water side input end of the water side heat exchanger 31 is connected to the output end of the water pump 32, the water side output end of the water side heat exchanger 31 is connected to the electric auxiliary heating device 34, and the refrigerant side input end of the water side heat exchanger 31 is connected to the The pressure valve 16 in the outdoor unit 1 is connected, the refrigerant side output end of the water side heat exchanger 31 is connected to the electronic expansion valve of the outdoor unit 1, the input end of the water pump 32 is connected to the first end of the first manual valve, and the second end of the first manual valve can be connected to the water tank 36 or the heating coil 37 according to different water channels. The output end of the electric auxiliary heating device 34 is connected to the first end of the second manual valve, and the second end of the second manual valve is connected to the first end of the reversing device 35. The reversing device 35 is connected to the water tank 36 or the heating coil 37 of the first water channel according to different water channels.

[0067] In this embodiment, the water path in the hydraulic module is divided into a first water path and a second water path according to different needs, wherein the first water path and the second water path are connected to the heat exchange module through a reversing device. When hot water is required, the normally open end of the three-way valve is connected to the first selection end, so that the water-side heat exchanger, water pump, electric auxiliary heating device, manual valve, three-way valve and water tank constitute the first water path to meet the hot water requirement; when heating is required, the normally open end of the three-way valve is connected to the second selection end, so that the water-side heat exchanger, water pump, electric auxiliary heating device, manual valve, three-way valve and heating coil constitute the second water path to meet the floor heating requirement.

[0068] In the specific implementation, when the air conditioner indoor heating of the multi-split air conditioner is in operation, the refrigerant is compressed by the compressor to obtain high-temperature and high-pressure refrigerant, and the high-temperature and high-pressure refrigerant is transported to the indoor heat exchanger through the four-way valve for condensation and heat dissipation. After the indoor heat exchanger exchanges heat with the indoor environment, medium-temperature and high-pressure refrigerant is obtained. Then, through the throttling elements such as the electronic expansion valve and the main capillary tube mentioned above, low-pressure and medium-temperature refrigerant is obtained, which is transported to the outdoor heat exchanger for evaporation to obtain low-temperature and low-pressure refrigerant, and finally returns to the compressor through the four-way valve to complete the single heating process.

[0069] At the same time, when the multi-split air conditioner is running for floor heating, the refrigerant is compressed by the compressor to obtain high-temperature and high-pressure refrigerant, and the high-temperature and high-pressure refrigerant is transported to the water-side heat exchanger in the heat exchange module through the four-way valve for condensation and heat dissipation. The water-side heat exchanger acts as a condenser. After heat exchange with the water in the water-side heat exchanger, the outlet water temperature is greater than the inlet water temperature, thereby heating the water flowing through the water-side heat exchanger to obtain medium-temperature and high-pressure refrigerant. Then, through the throttling elements such as the electronic expansion valve and the main capillary mentioned above, low-pressure and medium-temperature refrigerant is obtained, which is transported to the outdoor heat exchanger for evaporation to obtain low-temperature and low-pressure refrigerant. Finally, it returns to the compressor through the four-way valve to complete a single heating process. At the same time, the heated water in the water channel is returned to the heating coil through the electric auxiliary heating device and the three-way valve to facilitate floor heating.

[0070] At the same time, when the multi-split air conditioner is running to make hot water, the refrigerant is compressed by the compressor to obtain high-temperature and high-pressure refrigerant. The high-temperature and high-pressure refrigerant is transported to the water-side heat exchanger in the heat exchange module through the four-way valve for condensation and heat dissipation. The water-side heat exchanger acts as a condenser. After heat exchange with the water in the water-side heat exchanger, the outlet water temperature is greater than the inlet water temperature, thereby heating the water flowing through the water-side heat exchanger to obtain medium-temperature and high-pressure refrigerant. Then, through the throttling elements such as the electronic expansion valve and the main capillary tube mentioned above, low-pressure and medium-temperature refrigerant is obtained, which is transported to the outdoor heat exchanger for evaporation to obtain low-temperature and low-pressure refrigerant, and finally returns to the compressor through the four-way valve to complete a single heating process. At the same time, the heated water in the water channel is returned to the water tank through the electric auxiliary heating device and the three-way valve to achieve hot water. At this time, if there is excess hot water, it can be stored in the water tank for next use.

[0071] It can be understood that the heating simultaneous on mode refers to a mode in which the hydraulic module and the air-conditioning indoor unit are in operation at the same time. In this mode, due to the different usage scenarios and working conditions of the hydraulic module and the air-conditioning indoor unit, the pressure deviation between the hydraulic module and the air-conditioning indoor unit is large. When the hydraulic module operates in the low water temperature range, due to the low pressure of the hydraulic module, the refrigerant flows to the hydraulic module with low pressure, resulting in the air-conditioning indoor unit having no heating ability and blowing out cold air; when the hydraulic module is in the high water temperature range, due to the low pressure of the air-conditioning indoor unit, the refrigerant flows to the air-conditioning side with low pressure, resulting in the hydraulic module being unable to establish high pressure and unable to heat water, and the use of the heat pump unit for heating cannot reach the required water temperature.

[0072] It should be understood that the outlet water temperature of the hydraulic module refers to the temperature of the water after being heated by the water-side heat exchanger or the electric auxiliary heating device; the outdoor ambient temperature of the area where the outdoor unit is located can be the temperature collected by the temperature sensor or temperature sensing package installed on the outdoor unit casing, or it can be the temperature collected by the temperature sensing package at the outdoor heat exchanger in the outdoor unit. If there are multiple outdoor heat exchangers in the outdoor unit, the average value of the temperatures collected by the temperature sensing packages at each outdoor heat exchanger can be taken as the outdoor ambient temperature to reduce the impact of the outdoor ambient temperature on the control scheme in this embodiment; the equipment temperature specifically includes the exhaust temperature at the compressor outlet in the outdoor unit and the coil temperature or middle temperature of the indoor heat exchanger. At the same time, if there are multiple connected indoor units, or there are multiple indoor heat exchangers in a single indoor unit, the average value of the coil temperatures of each indoor heat exchanger can be taken as the coil temperature of the indoor heat exchanger. This embodiment does not impose specific restrictions on this.

[0073] Step S20: determining the water temperature adjustment range of the air conditioner according to the outlet water temperature and the outdoor ambient temperature.

[0074] It should be noted that the heating requirements of multi-split air conditioners vary under different outdoor ambient temperatures. For example, if the water temperature needs to be heated to 20°C, the heat required to heat the water temperature to 20°C when the outdoor ambient temperature is 5°C is relatively large compared to when the outdoor ambient temperature is 15°C, and the heating capacity requirement is higher. Therefore, in this embodiment, the water temperature adjustment range of the air conditioner is comprehensively judged by combining the water outlet temperature of the hydraulic module with the outdoor ambient temperature.

[0075] It can be understood that the water temperature adjustment range includes: low water temperature adjustment range, normal water temperature adjustment range and high water temperature adjustment range. Among them, the low water temperature adjustment range means that there may be more refrigerant flowing into the hydraulic module, resulting in the heating capacity of the air conditioner indoor unit being affected; the normal water temperature adjustment range means that there will not be a big difference in the refrigerant flow direction between the air conditioner indoor unit and the hydraulic module, and there will not be a big demand increase in heating capacity; the high water temperature adjustment range means that there may be more refrigerant flowing into the air conditioner indoor unit, resulting in the heating capacity of the hydraulic module being affected.

[0076] Furthermore, the determining of the water temperature adjustment range of the air conditioner according to the outlet water temperature and the outdoor ambient temperature includes:

[0077] Determine a corresponding interval judgment range according to the outdoor ambient temperature;

[0078] The water temperature adjustment range of the air conditioner is determined according to the minimum value of the low water temperature range, the maximum value of the high water temperature range, and the outdoor ambient temperature.

[0079] In a specific implementation, when the outdoor ambient temperature is less than or equal to the preset first temperature and the outlet water temperature is less than the minimum value of the first low water temperature interval, the water temperature adjustment interval of the air conditioner is judged to be the low water temperature adjustment interval; when the outdoor ambient temperature is less than or equal to the preset first temperature, the outlet water temperature is greater than or equal to the minimum value of the first low water temperature interval and less than or equal to the maximum value of the first high water temperature interval, the water temperature adjustment interval of the air conditioner is judged to be the normal water temperature adjustment interval; when the outdoor ambient temperature is less than or equal to the preset first temperature and the outlet water temperature is greater than the maximum value of the first high water temperature interval, the water temperature adjustment interval of the air conditioner is judged to be the high water temperature adjustment interval.

[0080] When the outdoor ambient temperature is greater than the preset first temperature, less than or equal to the preset second temperature, and the outlet water temperature is less than the minimum value of the second low water temperature interval, the water temperature adjustment interval of the air conditioner is judged to be the low water temperature adjustment interval; when the outdoor ambient temperature is greater than the preset first temperature, less than or equal to the preset second temperature, the outlet water temperature is greater than or equal to the minimum value of the second low water temperature interval and less than or equal to the maximum value of the second high water temperature interval, the water temperature adjustment interval of the air conditioner is judged to be the normal water temperature adjustment interval; when the outdoor ambient temperature is greater than the preset first temperature, less than or equal to the preset second temperature, and the outlet water temperature is greater than the maximum value of the second high water temperature interval, the water temperature adjustment interval of the air conditioner is judged to be the high water temperature adjustment interval, wherein the preset second temperature is greater than the preset first temperature, and the second interval judgment range is the range corresponding to when the outdoor ambient temperature is greater than the preset first temperature and less than or equal to the preset second temperature.

[0081] When the outdoor ambient temperature is greater than the preset second temperature, less than or equal to the preset third temperature, and the outlet water temperature is less than the minimum value of the third low water temperature interval, the water temperature regulation interval of the air conditioner is judged to be the low water temperature regulation interval; when the outdoor ambient temperature is greater than the preset second temperature, less than or equal to the preset third temperature, and the outlet water temperature is greater than or equal to the minimum value of the third low water temperature interval and less than or equal to the maximum value of the third high water temperature interval, the water temperature regulation interval of the air conditioner is judged to be the normal water temperature regulation interval; when the outdoor ambient temperature is greater than the preset second temperature, less than or equal to the preset third temperature, and the outlet water temperature is greater than the maximum value of the third high water temperature interval, the water temperature regulation interval of the air conditioner is judged to be the high water temperature regulation interval, wherein the preset third temperature is greater than the preset second temperature, and the third interval judgment range is the range corresponding to when the outdoor ambient temperature is greater than the preset second temperature and less than or equal to the preset third temperature.

[0082] When the outdoor ambient temperature is greater than the preset third temperature and the outlet water temperature is less than the minimum value of the fourth low water temperature interval, the water temperature regulation interval of the air conditioner is judged to be the low water temperature regulation interval; when the outdoor ambient temperature is greater than the preset third temperature and the outlet water temperature is greater than or equal to the minimum value of the fourth low water temperature interval and less than or equal to the maximum value of the fourth high water temperature interval, the water temperature regulation interval of the air conditioner is judged to be the normal water temperature regulation interval; when the outdoor ambient temperature is greater than the preset third temperature and the outlet water temperature is greater than the maximum value of the fourth high water temperature interval, the water temperature regulation interval of the air conditioner is judged to be the high water temperature regulation interval, and the fourth interval judgment range is the outlet water temperature interval judgment range corresponding to the outdoor ambient temperature being greater than the preset third temperature.

[0083] Refer to Table 1, which is an example parameter table for determining which water temperature adjustment range the air conditioner is in in this embodiment.

[0084] Table 1

[0085]

[0086]

[0087] Among them, T4 refers to the outdoor ambient temperature, TW1 refers to the outlet water temperature of the hydraulic module, TW1_Min and TW1_Max are the minimum and maximum values ​​of the low water temperature range corresponding to the current outdoor ambient temperature.

[0088] Step S30: determining the opening change value of each throttling element according to the equipment temperature and the water temperature adjustment range.

[0089] It is worth noting that different water temperature adjustment ranges indicate different heating requirements of the air-conditioning indoor unit and the hydraulic module. Therefore, the refrigerant distribution ratio is also different. This embodiment adjusts the refrigerant distribution ratio between the air-conditioning indoor unit and the hydraulic module by adjusting the first throttling element between the outdoor unit and the air-conditioning indoor unit, and adjusting the second throttling element between the outdoor unit and the hydraulic module.

[0090] Step S40: adjusting the opening of each throttling element according to the opening change value.

[0091] It should be understood that in the low water temperature adjustment range, due to the large heating demand of the hydraulic module, a large amount of refrigerant flows through the hydraulic module. This can be achieved by reducing the opening of the second throttling element between the hydraulic module and the outdoor unit, or reducing the first throttling element between the indoor unit and the outdoor unit of the air conditioner and the second throttling element between the hydraulic module and the outdoor unit, but adjusting the opening of the second throttling element more. The opening of the first throttling element can also be increased, or the opening of the first throttling element can be increased by a greater margin than the opening of the second throttling element, so as to reduce the amount of refrigerant flowing into the hydraulic module, avoid affecting the heating capacity of the indoor unit of the air conditioner, and then blowing out cold air. This embodiment does not impose specific restrictions on this.

[0092] Similarly, in the high water temperature adjustment range, since a large amount of refrigerant flows through the indoor unit of the air conditioner, the opening of the second throttling element between the hydraulic module and the outdoor unit can be increased, or the first throttling element between the indoor unit and the outdoor unit of the air conditioner and the second throttling element between the hydraulic module and the outdoor unit can be increased, but the opening of the second throttling element can be adjusted more. The opening of the first throttling element can also be reduced, or the opening of the first throttling element can be reduced by a larger margin than the opening of the second throttling element, so as to reduce the amount of refrigerant flowing into the hydraulic module and avoid affecting the heating capacity of the indoor unit of the air conditioner.

[0093] This embodiment determines the current water temperature regulation range of the air conditioner by comprehensively judging the outlet water temperature of the hydraulic module in the air conditioner and the outdoor ambient temperature when the air conditioner is operating in the heating and opening mode, so as to facilitate the subsequent targeted selection of how to adjust the opening of the throttling element. At the same time, the opening change value of each throttling element is calculated according to the equipment temperature of the air conditioner, and the pipe pressure difference between the heating capacity of the indoor unit or hydraulic module of the air conditioner and the outdoor unit is accurately adjusted, thereby avoiding the technical problem of the hydraulic module and the indoor unit of the multi-split air conditioner in the prior art that the heating capacity of both is easily affected when the hydraulic module and the indoor unit of the air conditioner are operating in heating mode at the same time, thereby improving the user experience when making hot water or heating, and improving the user comfort when using.

[0094] refer to Figure 4 , Figure 4 FIG. 4 is a flow chart of a second embodiment of an air conditioner control method according to the present invention.

[0095] Based on the above first embodiment, in this embodiment, step S30 includes:

[0096] Step S301: obtaining a target exhaust temperature of the compressor, an average coil temperature of the indoor heat exchanger of each air conditioner in the startup state, and a target coil temperature.

[0097] It should be noted that the target exhaust temperature of the compressor refers to the theoretical exhaust temperature under the current outdoor ambient temperature and the current compressor operating frequency. Secondly, since some of the air-conditioning indoor units in the multi-split air conditioner are in non-standby or shutdown state, in this embodiment, the target scheduling temperature of the compressor is calculated based on the operating frequency of the compressor, the outdoor ambient temperature of the area, and the average coil temperature of the indoor heat exchanger in the startup state.

[0098] In addition, the target coil temperature refers to the theoretically corresponding coil temperature of the indoor heat exchanger after the user sets the desired temperature. In this embodiment, the target coil temperature ranges from 35 to 345°C. In this embodiment and the following embodiments, 40°C is used as an example for explanation.

[0099] Step S302: Calculate a first temperature difference between the exhaust temperature and the target exhaust temperature, and determine a first temperature difference interval in which the first temperature difference lies.

[0100] It can be understood that the first temperature difference interval can be set with reference to Table 2, and there is a mapping relationship between the temperature difference between the exhaust temperature and the target exhaust temperature and the opening change value of the throttling element. The mapping relationship can be defined by the user and can also be obtained in advance through experiments. For example: by limiting the temperature rise value of the air-conditioning indoor unit and the hydraulic module, the air-conditioning indoor unit or the hydraulic module is operated separately, and the exhaust temperature and the target exhaust temperature are obtained. When the temperature difference is the same, the opening of the throttling element is determined, and then the mapping relationship between the exhaust temperature, the target exhaust temperature and the opening change value of the throttling element is obtained. This embodiment does not impose specific restrictions on this.

[0101] Table 2

[0102] TP-TP_Tar difference Throttle element adjustment steps TP-TP_Tar≤-4 -14 -4<TP-TP_Tar≤-2 -8 -2<TP-TP_Tar≤1 -4 1<TP-TP_Tar≤0 0 1<TP-TP_Tar≤3 +6 TP-TP_Tar>3 +10

[0103] Where TP refers to the exhaust temperature of the compressor, and TP_Tar refers to the target exhaust temperature.

[0104] Step S303: Calculate a second temperature difference between the mean coil temperature and the target coil temperature, and determine a second temperature difference range in which the second temperature difference lies.

[0105] It is understandable that the second temperature difference interval can be set with reference to Table 3, and there is a mapping relationship between the temperature difference between the mean coil temperature and the target coil temperature and the opening change value of the throttling element. This mapping relationship can be defined by the user or obtained in advance through experiments. This embodiment does not impose specific restrictions on this.

[0106] Table 3

[0107] T2_Aver-T2_Tar difference Throttle element adjustment steps T2_Aver-T2_Tar≤-3 -12 -3<T2_Aver-T2_Tar≤-1 -6 -1<T2_Aver-T2_Tar≤1 0 1<T2_Aver-T2_Tar≤3 +4 T2_Aver-T2_Tar>3 +10

[0108] T2_Aver refers to the average coil temperature of the indoor heat exchanger of each air conditioner in the startup state, and T2_Tar refers to the target coil temperature.

[0109] Step S304: when the water temperature adjustment interval is a low water temperature adjustment interval, determining a change value of the opening degree of the first throttling element according to the first temperature difference interval and the second temperature difference interval.

[0110] It is worth noting that when the air conditioner is in the low water temperature adjustment range, the opening change value of the first throttling element is obtained based on the comprehensive calculation of the first temperature difference between the exhaust temperature and the target exhaust temperature and the second temperature difference between the coil temperature average and the target coil temperature, and then the opening of the first throttling element between the indoor and outdoor units of the air conditioner is adjusted. For example: the first temperature difference is -4 degrees Celsius and the second temperature difference is 2 degrees Celsius. According to Table 2 and Table 3, it can be comprehensively determined that the opening change value of the first throttling element is approximately -10 steps. In this embodiment, the opening adjustments corresponding to positive and negative step numbers are opposite. For example: a positive step number indicates that the opening is increased, and a negative step number indicates that the opening is decreased, or vice versa. This embodiment does not impose specific restrictions on this.

[0111] Step S305: determining the opening change value of the second throttling element according to the second temperature difference range.

[0112] In a specific implementation, if the air conditioner is in a low water temperature adjustment range, the opening of the second throttling element between the hydraulic module and the outdoor unit is determined by the difference between the mean coil temperature and the target coil temperature. For example, if the second temperature difference between the mean coil temperature and the target coil temperature is 0°C, the opening change value of the second throttling element is 0, and no adjustment is made.

[0113] Furthermore, after determining the opening change value of the second throttling element according to the second temperature difference range, the method further includes:

[0114] At preset intervals, obtaining the temperature rise difference of the outlet water temperature of the hydraulic module;

[0115] When the temperature rise difference is less than the first temperature, the electric auxiliary heating device is started to heat the hydraulic module.

[0116] It is understandable that after the air conditioner enters the low water temperature adjustment range, it can detect the outlet water temperature of the hydraulic module at certain intervals to determine whether the heating capacity of the hydraulic module can meet user needs after adjusting the throttling element. The preset time can be set to 10 minutes, and this embodiment does not impose specific restrictions on this.

[0117] In a specific implementation, the first temperature can be set to 2°C, that is, when the air conditioner enters the low water temperature adjustment range and the compressor runs for 10 minutes, if the temperature rise difference of the outlet water temperature of the hydraulic module is less than 2°C, it means that the heating capacity of the hydraulic module is insufficient to meet user needs and an additional heating device is required for heating. In this embodiment, the outlet water channel of the water-side heat exchanger is heated by an electric auxiliary heating device provided in the hydraulic module to achieve the purpose of increasing the outlet water temperature; if the temperature rise difference of the outlet water temperature of the hydraulic module is not less than 2°C, it means that the heating capacity of the hydraulic module is sufficient and the current operating state can be maintained without turning on the electric auxiliary heating device.

[0118] Furthermore, when the air conditioner is in the low water temperature range and the opening of each throttling element is adjusted, the hydraulic module's heating capacity will be enhanced. To enhance the user experience, the hydraulic module's outlet water temperature can be detected and compared with the minimum outlet water temperature in the low water temperature range. When the outlet water temperature is below the minimum, the low water temperature range is maintained. When the outlet water temperature is greater than or equal to the minimum, the low water temperature range is exited, the hydraulic module's electric heating is turned off, and the system enters the normal range.

[0119] In addition, in order to avoid the air conditioner indoor unit blowing cold air, you can also control the fan speed of the air conditioner indoor unit.

[0120] Furthermore, after calculating the second temperature difference between the mean coil temperature and the target coil temperature and determining the second temperature difference range in which the second temperature difference lies, the method further includes:

[0121] When the water temperature adjustment interval is a normal water temperature adjustment interval, determining a change value of the opening degree of the first throttling element according to the first temperature difference interval and the second temperature difference interval;

[0122] The opening change value of the second throttling element is determined according to the first temperature difference range.

[0123] It should be noted that when the air conditioner is in the normal water temperature adjustment range, the opening change value of the first throttling element is obtained by comprehensively calculating the first temperature difference between the exhaust temperature and the target exhaust temperature and the second temperature difference between the average coil temperature and the target coil temperature; the opening change value of the second throttling element is determined by the first temperature difference between the exhaust temperature and the target exhaust temperature.

[0124] At the same time, after the air conditioner is in the normal water temperature adjustment range and the opening of each throttling element is adjusted, in order to avoid overflow of the heating capacity of the hydraulic module or the air conditioner indoor unit, save electricity resources, and improve the user experience, the outlet water temperature of the hydraulic module and the maximum value of the set high water temperature range outlet water temperature can be detected and judged. When the outlet water temperature is less than the maximum value, the low water temperature adjustment range control is maintained; when the outlet water temperature is greater than or equal to the minimum value, the normal adjustment range control is exited and the high water temperature adjustment range is entered.

[0125] Furthermore, after calculating the second temperature difference between the mean coil temperature and the target coil temperature and determining the second temperature difference range in which the second temperature difference lies, the method further includes:

[0126] When the water temperature adjustment interval is a high water temperature adjustment interval, determining a change value of the opening degree of the second throttling element according to the second temperature difference interval;

[0127] The opening change value of the first throttling element is determined according to a preset opening extreme value.

[0128] In a specific implementation, when the air conditioner is in a high water temperature adjustment range, the opening change value of the first throttling element is determined by a preset opening extreme value, wherein the preset opening mechanism refers to the fixed minimum opening of the first throttling element, and the opening change value of the second throttling element is determined by the first temperature difference between the exhaust temperature and the target exhaust temperature.

[0129] It is worth noting that in the high water temperature adjustment range, due to the high heating demand of the air-conditioning indoor unit, the air conditioner will allocate a large amount of refrigerant to the air-conditioning indoor unit. Therefore, when the hydraulic module needs to heat, insufficient heating may occur. The water channel in the hydraulic module can also be heated by an electric auxiliary heating device to improve the heating capacity of the hydraulic module.

[0130] Furthermore, the air conditioner control method further includes:

[0131] When the water temperature adjustment range is a high water temperature adjustment range, adjusting the speed of the fan according to the second temperature difference range;

[0132] At preset intervals, obtaining the temperature rise difference of the outlet water temperature of the hydraulic module;

[0133] When the temperature rise difference is less than the first temperature, the electric auxiliary heating device is started to heat the hydraulic module.

[0134] It is understandable that after the air conditioner enters the high water temperature adjustment range, it can detect the outlet water temperature of the hydraulic module at certain intervals to determine whether the heating capacity of the hydraulic module is too low after adjusting the throttling element. The preset time can be set to 10 minutes, and this embodiment does not impose any specific restrictions on this.

[0135] Among them, if the air conditioner enters the high water temperature adjustment range, after the compressor has been running for 10 minutes, the temperature rise difference of the water outlet temperature of the hydraulic module is less than 2°C, it means that the heating capacity of the hydraulic module is too low and an additional heating device is required for heating. At this time, the electric auxiliary heating device is started to heat the water circuit; if the temperature rise difference of the water outlet temperature of the hydraulic module is not less than 2°C, it means that the heating capacity of the hydraulic module is sufficient and the current operating state can be maintained without turning on the electric auxiliary heating device.

[0136] In a specific implementation, the adjustment of the fan gear or fan speed can refer to Table 4, and there is a mapping relationship between the second temperature difference between the coil temperature mean and the target coil temperature and the fan speed or fan gear. The mapping relationship can be defined by the user or obtained in advance through experiments. This embodiment does not impose specific restrictions on this.

[0137] Table 4

[0138] T2_Aver-T2_Tar difference Fan gear adjustment T2_Aver-T2_Tar≤-3 -20％ -3<T2_Aver-T2_Tar≤-1 -10％ -1<T2_Aver-T2_Tar≤1 0％ 1<T2_Aver-T2_Tar≤3 +8％ T2_Aver-T2_Tar>3 +16％

[0139] T2_Aver refers to the average coil temperature of the indoor heat exchanger of each air conditioner in the startup state, and T2_Tar refers to the target coil temperature.

[0140] Furthermore, after starting the electric auxiliary heating device, the method further includes:

[0141] At preset intervals, obtaining the temperature rise difference of the outlet water temperature of the hydraulic module;

[0142] When the temperature rise difference is less than the first temperature, controlling the fan to stop running;

[0143] The air conditioner indoor unit is controlled to enter a standby state until the hydraulic module reaches a temperature and stops.

[0144] In the specific implementation, after the electric auxiliary heating device of the hydraulic module is turned on, if the temperature rise difference of the water outlet temperature of the hydraulic module is not less than 2°C, it means that the heating capacity of the hydraulic module is sufficient at this time. However, if the electric auxiliary heating device of the hydraulic module is turned on, the temperature rise difference of the water outlet temperature of the hydraulic module is still less than 2°C. At this time, it is necessary to process the air-conditioning indoor unit, and give priority to improving the heating capacity of the hydraulic module, that is, turn off the fan of the air-conditioning indoor unit, and put the air-conditioning indoor unit into standby state until the hydraulic module reaches the temperature and then switch to the air-conditioning indoor unit mode.

[0145] This embodiment adjusts the opening of the throttling element when the air conditioner is in the low water temperature adjustment range, normal water temperature adjustment range and high water temperature adjustment range, so as to maximize the heating demand when the hydraulic module and the air conditioner indoor unit are turned on at the same time, thereby increasing the comfort of customers when using the heating and cooling mode.

[0146] In addition, an embodiment of the present invention further provides a storage medium on which an air conditioner control program is stored. When the air conditioner control program is executed by a processor, the steps of the air conditioner control method described above are implemented.

[0147] Since the storage medium adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0148] Reference Figure 5 , Figure 5 FIG. 1 is a structural block diagram of a first embodiment of an air conditioner control device according to the present invention.

[0149] like Figure 5 As shown, the air conditioner control device proposed in the embodiment of the present invention includes:

[0150] The acquisition module 10 is used to acquire the outlet water temperature of the hydraulic module, the outdoor ambient temperature of the area where the outdoor unit is located, and the equipment temperature of the air conditioner when the air conditioner operates in a heating mode.

[0151] The judgment module 20 is used to judge the water temperature adjustment range of the air conditioner according to the outlet water temperature and the outdoor ambient temperature.

[0152] The calculation module 30 is used to determine the opening change value of each throttling element according to the equipment temperature and the water temperature adjustment range.

[0153] The adjustment module 40 is used to adjust the opening of each throttling element according to the opening change value.

[0154] In one embodiment, the calculation module 30 is further used to obtain the target exhaust temperature of the compressor, the average coil temperature of the indoor heat exchanger of each air-conditioning indoor unit in the startup state, and the target coil temperature; calculate a first temperature difference between the exhaust temperature and the target exhaust temperature, and determine a first temperature difference range in which the first temperature difference is located; calculate a second temperature difference between the average coil temperature and the target coil temperature, and determine a second temperature difference range in which the second temperature difference is located; when the water temperature adjustment range is the low water temperature adjustment range, determine the opening change value of the first throttling element according to the first temperature difference range and the second temperature difference range; determine the opening change value of the second throttling element according to the second temperature difference range.

[0155] In one embodiment, the calculation module 30 is further configured to obtain a temperature rise difference of the outlet water temperature of the hydraulic module at preset time intervals; and when the temperature rise difference is less than a first temperature, start the electric auxiliary heating device to heat the hydraulic module.

[0156] In one embodiment, the calculation module 30 is further used to determine the opening change value of the first throttling element according to the first temperature difference interval and the second temperature difference interval when the water temperature adjustment interval is the normal water temperature adjustment interval; and determine the opening change value of the second throttling element according to the first temperature difference interval.

[0157] In one embodiment, the calculation module 30 is further used to determine the opening change value of the second throttling element according to the second temperature difference range when the water temperature adjustment range is a high water temperature adjustment range; and determine the opening change value of the first throttling element according to a preset opening extreme value.

[0158] In one embodiment, the calculation module 30 is further used to adjust the speed of the fan according to the second temperature difference range when the water temperature adjustment range is the high water temperature adjustment range; obtain the temperature rise difference of the outlet water temperature of the hydraulic module at a preset time interval; when the temperature rise difference is less than the first temperature, start the electric auxiliary heating device to heat the hydraulic module.

[0159] In one embodiment, the calculation module 30 is also used to obtain the temperature rise difference of the water outlet temperature of the hydraulic module at intervals of a preset time; when the temperature rise difference is less than the first temperature, control the fan to stop running; and control the air conditioner indoor unit to enter a standby state until the hydraulic module reaches the temperature and stops.

[0160] This embodiment determines the current water temperature regulation range of the air conditioner by comprehensively judging the outlet water temperature of the hydraulic module in the air conditioner and the outdoor ambient temperature when the air conditioner is operating in the heating and opening mode, so as to facilitate the subsequent targeted selection of how to adjust the opening of the throttling element. At the same time, the opening change value of each throttling element is calculated according to the equipment temperature of the air conditioner, and the pipe pressure difference between the heating capacity of the indoor unit or hydraulic module of the air conditioner and the outdoor unit is accurately adjusted, thereby avoiding the technical problem of the hydraulic module and the indoor unit of the multi-split air conditioner in the prior art that the heating capacity of both is easily affected when the hydraulic module and the indoor unit of the air conditioner are operating in heating mode at the same time, thereby improving the user experience when making hot water or heating, and improving the user comfort when using.

[0161] It should be understood that the above is only an example and does not constitute any limitation to the technical solution of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any limitation on this.

[0162] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of the present invention. In practical applications, technicians in this field can select part or all of it according to actual needs to achieve the purpose of the embodiment scheme, and no limitation is made here.

[0163] In addition, for technical details not fully described in this embodiment, reference can be made to the air conditioner control method provided in any embodiment of the present invention, and will not be repeated here.

[0164] In addition, it should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0165] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0166] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, or of course by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a storage medium (such as a read-only memory (ROM) / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0167] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that: The air conditioner control method is applied to a multi-split heating air conditioner, which includes an outdoor unit, a plurality of indoor air conditioners, and a hydraulic module. The outdoor unit is respectively connected to each indoor air conditioner and the hydraulic module. A throttling element for controlling the flow of refrigerant is respectively provided between the outdoor unit, each indoor air conditioner, and the hydraulic module. The air conditioner control method includes: When the air conditioner is operating in a heating mode, obtaining the water outlet temperature of the hydraulic module, the outdoor ambient temperature of the area where the outdoor unit is located, and the device temperature of the air conditioner; Determining the water temperature adjustment range of the air conditioner according to the outlet water temperature and the outdoor ambient temperature; Determining the opening change value of each throttling element according to the equipment temperature and the water temperature adjustment range; adjusting the opening of each throttling element according to the opening change value; wherein a first throttling element is provided between the outdoor unit and each indoor unit of the air conditioner, a second throttling element is provided between the outdoor unit and the hydraulic module, the opening change value includes a first opening change value corresponding to the first throttling element and a second opening change value corresponding to the second throttling element, the outdoor unit includes a compressor, the indoor unit of the air conditioner includes an indoor heat exchanger, and the equipment temperature includes an exhaust temperature of the compressor and a coil temperature of the indoor heat exchanger; The step of determining the opening change value of each throttling element according to the device temperature and the water temperature adjustment range includes: Obtaining a target exhaust temperature of the compressor, an average coil temperature of the indoor heat exchanger of each air conditioner in a startup state, and a target coil temperature; calculating a first temperature difference between the exhaust temperature and the target exhaust temperature, and determining a first temperature difference interval in which the first temperature difference lies; Calculating a second temperature difference between the mean coil temperature and the target coil temperature, and determining a second temperature difference interval in which the second temperature difference lies; When the water temperature adjustment interval is a low water temperature adjustment interval, the opening change value of the first throttling element is determined according to the first temperature difference interval and the second temperature difference interval, and the low water temperature adjustment interval is determined when the outlet water temperature of the hydraulic module is less than the minimum value of the low water temperature interval range corresponding to the current outdoor ambient temperature; The opening change value of the second throttling element is determined according to the second temperature difference range.

2. The air conditioner control method according to claim 1, wherein: The hydraulic module includes an electric auxiliary heating device; After determining the opening change value of the second throttling element according to the second temperature difference range, the method further includes: At preset intervals, obtaining the temperature rise difference of the outlet water temperature of the hydraulic module; When the temperature rise difference is less than the first temperature, the electric auxiliary heating device is started to heat the hydraulic module.

3. The air conditioner control method according to claim 1, wherein: After calculating the second temperature difference between the mean coil temperature and the target coil temperature and determining the second temperature difference range in which the second temperature difference lies, the method further includes: When the water temperature adjustment interval is a normal water temperature adjustment interval, the opening change value of the first throttling element is determined according to the first temperature difference interval and the second temperature difference interval, and the normal water temperature adjustment interval is determined when the outlet water temperature of the hydraulic module is greater than or equal to the minimum value of the low water temperature interval range corresponding to the current outdoor ambient temperature and the outlet water temperature of the hydraulic module is less than or equal to the maximum value of the low water temperature interval range corresponding to the current outdoor ambient temperature; The opening change value of the second throttling element is determined according to the first temperature difference range.

4. The air conditioner control method according to claim 1, wherein: After calculating the second temperature difference between the mean coil temperature and the target coil temperature and determining the second temperature difference range in which the second temperature difference lies, the method further includes: When the water temperature adjustment interval is a high water temperature adjustment interval, the opening change value of the second throttling element is determined according to the second temperature difference interval, and the high water temperature adjustment interval is determined when the outlet water temperature of the hydraulic module is greater than the maximum value of the low water temperature interval corresponding to the current outdoor ambient temperature; The opening change value of the first throttling element is determined according to a preset opening extreme value.

5. The air conditioner control method according to claim 4, wherein: The air conditioner indoor unit includes a fan for controlling the air supply volume; The air conditioner control method further includes: When the water temperature adjustment interval is a high water temperature adjustment interval, the speed of the fan is adjusted according to the second temperature difference interval, and the high water temperature adjustment interval is determined when the outlet water temperature of the hydraulic module is greater than the maximum value of the low water temperature interval corresponding to the current outdoor ambient temperature; At preset intervals, obtaining the temperature rise difference of the outlet water temperature of the hydraulic module; When the temperature rise difference is less than the first temperature, the electric auxiliary heating device is started to heat the hydraulic module.

6. The air conditioner control method according to claim 5, wherein: After the electric auxiliary heating device is started, the method further comprises: At preset intervals, obtaining the temperature rise difference of the outlet water temperature of the hydraulic module; When the temperature rise difference is less than the first temperature, controlling the fan to stop running; The air conditioner indoor unit is controlled to enter a standby state until the hydraulic module reaches a temperature and stops.

7. An air conditioner control device, characterized in that: The air conditioner control device implements the air conditioner control method according to any one of claims 1 to 6, and the air conditioner control device includes: an acquisition module, configured to acquire the outlet water temperature of the hydraulic module, the outdoor ambient temperature of the area where the outdoor unit is located, and the device temperature of the air conditioner when the air conditioner operates in a heating mode; a judgment module, configured to judge the water temperature adjustment range of the air conditioner according to the outlet water temperature and the outdoor ambient temperature; a calculation module, configured to obtain a target exhaust temperature of the compressor, an average coil temperature of the indoor heat exchanger of each air-conditioning indoor unit in a startup state, and a target coil temperature; calculate a first temperature difference between the exhaust temperature and the target exhaust temperature, and determine a first temperature difference interval within which the first temperature difference lies; calculate a second temperature difference between the average coil temperature and the target coil temperature, and determine a second temperature difference interval within which the second temperature difference lies; when the water temperature adjustment interval is a low water temperature adjustment interval, determine an opening change value of the first throttling element according to the first temperature difference interval and the second temperature difference interval, the low water temperature adjustment interval being determined when the outlet water temperature of the hydraulic module is less than a minimum value of the low water temperature interval corresponding to the current outdoor ambient temperature; determine an opening change value of the second throttling element according to the second temperature difference interval; The adjustment module is used to adjust the opening of each throttling element according to the opening change value.

8. An air conditioner control device, characterized in that: The air conditioner control device includes: a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor, wherein the air conditioner control program is configured to implement the air conditioner control method according to any one of claims 1 to 6.

9. A storage medium, characterized in that: The storage medium stores an air conditioner control program, and when the air conditioner control program is executed by the processor, the air conditioner control method according to any one of claims 1 to 6 is implemented.

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