Air conditioner control method and device, multi-connected hot water air conditioning system and storage medium

Abstract

The embodiment of the application provides a kind of air conditioner control method, device, multi-connection hot water air conditioning system and storage medium, it is related to air conditioner control technical field.In the case where multi-connection hot water air conditioning system refrigeration and hot water operation, the fan operating parameter of each fan is acquired;According to fan operating parameter, determine whether multi-connection hot water air conditioning system is in fan fluctuation state;In the case where multi-connection hot water air conditioning system is in fan fluctuation state, according to the current outdoor ambient temperature, determine fan adjustment strategy;According to fan adjustment strategy, adjust fan.This way, the problem of frequent fluctuation of fan can be alleviated by adjusting fan, so as to ensure the stable operation of multi-connection hot water air conditioning system, and then improve user experience.

Description

Technical Field

[0001] This application relates to the field of air conditioning control technology, and more specifically, to an air conditioning control method, device, multi-split hot water air conditioning system, and storage medium. Background Technology

[0002] To reduce energy consumption and improve user comfort and satisfaction, multi-split air conditioning systems have become an important component of modern building energy conservation and intelligent management. These systems can simultaneously provide cooling, heating, and hot water, and are widely used in diverse settings such as residential communities, hotels, shopping malls, and hospitals. They not only significantly reduce building energy consumption but also enable personalized temperature control through flexible zone settings, providing users with a more convenient and comfortable experience.

[0003] Currently, fan control plays a crucial role in multi-split hot water air conditioning systems. However, in existing technologies, multi-split hot water air conditioning systems with dual fans often experience fan fluctuations during cooling and hot water production, resulting in unstable operation. This problem leads to unstable operation of the multi-split hot water air conditioning system, resulting in a poor user experience. Summary of the Invention

[0004] The problem addressed in this application is how to adjust the fan to ensure the stable operation of a multi-split hot water air conditioning system and improve the user experience.

[0005] To address the aforementioned problems, this application provides an air conditioning control method, apparatus, multi-split hot water air conditioning system, and computer-readable storage medium.

[0006] In a first aspect, this application provides an air conditioning control method applied to a multi-split hot water air conditioning system, wherein the multi-split hot water air conditioning system is a dual-fan system, and the method includes:

[0007] When the multi-split hot water air conditioning system is operating in both cooling and hot water production mode, the operating parameters of each fan are obtained.

[0008] Determine whether the multi-split hot water air conditioning system is in a fluctuating state based on the fan operating parameters;

[0009] When the multi-split hot water air conditioning system is in a state of fan fluctuation, the fan adjustment strategy is determined based on the current outdoor ambient temperature.

[0010] The fan is adjusted according to the fan adjustment strategy.

[0011] The air conditioning control method provided in this application embodiment allows a multi-split hot water air conditioning system to determine whether it is experiencing fan fluctuations when operating in both cooling and hot water production modes, based on the operating parameters of each fan. If fan fluctuations are confirmed, a fan adjustment strategy is determined based on the current outdoor ambient temperature. This strategy allows for fan adjustment to mitigate frequent fan fluctuations, ensuring stable operation of the multi-split hot water air conditioning system and improving user experience.

[0012] In an optional implementation, determining whether the multi-split hot water air conditioning system is in a fan fluctuation state based on the fan operating parameters includes:

[0013] For each wind turbine, determine whether the wind turbine is in a fluctuating state based on the wind turbine's operating parameters;

[0014] If any of the aforementioned fans are in the fluctuating state, it is determined that the multi-split hot water air conditioning system is in the fan fluctuating state.

[0015] The air conditioning control method provided in this application embodiment can determine that the multi-split hot water air conditioning system is in a fluctuating state if any fan is in a fluctuating state. Therefore, it can quickly respond to the overall system status and make timely adjustments to the multi-split hot water air conditioning system to adjust the fan operating status.

[0016] In an optional implementation, the fan operating parameters include the fan speed, and determining whether the fan is in a fluctuating state based on the fan operating parameters includes:

[0017] If the number of times the fan speed fluctuates within the first preset time period meets the preset fluctuation condition, then the fan is determined to be in a fluctuating state; wherein, if the change value of the fan speed within the second preset time period exceeds the preset value, then the fan speed is determined to have fluctuated once; the first preset time period is longer than the second preset time period.

[0018] The air conditioning control method provided in this application makes the judgment process more rigorous by setting a first preset duration, a second preset duration, a preset number of times, and a preset value to judge the fluctuation state of the fan, thus avoiding false alarms or missed alarms.

[0019] In an optional implementation, when the multi-split hot water air conditioning system is in a fan fluctuation state, a fan adjustment strategy is determined based on the current outdoor ambient temperature, including:

[0020] If the outdoor ambient temperature is lower than the preset ambient temperature and both fans are on, then the fan adjustment strategy is determined to be to shut down either fan.

[0021] If the outdoor ambient temperature is lower than the preset ambient temperature and only one of the fans is on, then the fan adjustment strategy is determined to be to turn off the fan.

[0022] If the outdoor ambient temperature is greater than or equal to the preset ambient temperature, the fan adjustment strategy is determined based on the hot water temperature of the multi-split hot water air conditioning system.

[0023] The air conditioning control method provided in this application takes into account that when the outdoor ambient temperature is low, the outdoor ambient temperature itself can meet the heat dissipation requirements of the outdoor heat exchanger, and there is no need for many fans to drive heat dissipation. Therefore, in order to avoid the situation where the speed and current of many fans decrease due to the use of many fans, resulting in frequent fluctuations of the fans, the multi-split hot water air conditioning system can be adjusted by shutting down one fan, thereby ensuring that the fans can operate stably. If the current ambient temperature is high, in order to avoid the influence of water temperature on the fan speed and fan current, the fan adjustment strategy can be determined by the hot water temperature of the multi-split hot water air conditioning system, thereby ensuring that the fans can operate stably.

[0024] In an optional implementation, determining the fan adjustment strategy based on the hot water temperature of the multi-split hot water air conditioning system includes:

[0025] If the hot water temperature is greater than or equal to the preset water temperature, then the fan adjustment strategy is determined to set the range of the operating high pressure value of the multi-split hot water air conditioning system to the first preset high pressure range.

[0026] If the hot water temperature is lower than the preset water temperature, then the fan adjustment strategy is determined to set the range of the operating high pressure value of the multi-split hot water air conditioning system to the second preset high pressure range.

[0027] Wherein, the upper and lower limits of the second preset high voltage range are both less than the upper and lower limits of the first preset high voltage range, and the difference between the upper and lower limits of the second preset high voltage range is greater than the difference between the upper and lower limits of the first preset high voltage range.

[0028] The air conditioning control method provided in this application embodiment can reduce the fan speed and refrigerant flow rate by setting the range of the operating high pressure value to a first preset high pressure range when the hot water temperature is high, since no additional hot water production capacity is required; and when the hot water temperature is low, since the hot water production capacity needs to be increased, the range of the operating high pressure value can be set to a second preset high pressure range to ensure stable fan operation while increasing refrigerant flow rate and fan speed.

[0029] In an optional implementation, after adjusting the multi-split hot water air conditioning system according to the fan adjustment strategy, the method further includes:

[0030] If it is determined again that the multi-split hot water air conditioning system is in a fan fluctuation state and the multi-split hot water air conditioning system meets the preset conditions, then the multi-split hot water air conditioning system will be shut down for protection.

[0031] The preset conditions include both fans being in a closed state, or the operating high pressure value of the multi-split hot water air conditioning system being within a first preset high pressure range, or the operating high pressure value of the multi-split hot water air conditioning system being within a second preset high pressure range.

[0032] The air conditioning control method provided in this application, after adjusting the multi-split hot water air conditioning system and when the multi-split hot water air conditioning system meets the preset conditions, if the system is still in a fan fluctuation state, it indicates that the multi-split hot water air conditioning system may have a certain fault. Therefore, it can be shut down for protection so as to maintain the multi-split hot water air conditioning system in a timely manner.

[0033] Secondly, this application provides an air conditioning control device for use in a multi-split hot water air conditioning system, wherein the multi-split hot water air conditioning system is a dual-fan system, and the device includes:

[0034] The acquisition module is used to acquire the fan operating parameters of each fan when the multi-split hot water air conditioning system is operating in both cooling and hot water production mode.

[0035] The determination module is used to determine whether the multi-split hot water air conditioning system is in a fan fluctuation state based on the fan operating parameters.

[0036] The determining module is also used to determine a fan adjustment strategy based on the current outdoor ambient temperature when the multi-split hot water air conditioning system is in a fan fluctuation state.

[0037] An adjustment module is used to adjust the fan according to the fan adjustment strategy.

[0038] The air conditioning control device provided in this application embodiment can acquire the fan operating parameters of each fan in a multi-split hot water air conditioning system when it is operating in both cooling and hot water production modes. A determining module then determines whether the multi-split hot water air conditioning system is experiencing fan fluctuations based on these parameters. If the system is experiencing fan fluctuations, a fan adjustment strategy is determined based on the current outdoor ambient temperature. An adjustment module then adjusts the multi-split hot water air conditioning system according to this strategy to ensure stable fan operation. This approach mitigates frequent fan fluctuations, ensuring stable operation of the multi-split hot water air conditioning system and improving user experience.

[0039] In an optional implementation, the determining module is further configured to determine whether each fan is in a fluctuating state based on its operating parameters; and if any fan is in the fluctuating state, determine that the multi-split hot water air conditioning system is in a fan fluctuating state.

[0040] Thirdly, this application provides a multi-split hot water air conditioning system, including a controller, which executes a computer program to implement the method described in any of the foregoing embodiments.

[0041] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a controller, implements the method described in any of the foregoing embodiments. Attached Figure Description

[0042] Figure 1 A schematic diagram of a multi-unit hot water air conditioning system provided in an embodiment of this application;

[0043] Figure 2 A schematic flowchart of an air conditioning control method provided in an embodiment of this application;

[0044] Figure 3 Another schematic flowchart of the air conditioning control method provided in the embodiments of this application;

[0045] Figure 4 This is a schematic diagram of a module of an air conditioning control device provided in an embodiment of this application.

[0046] Explanation of reference numerals in the attached figures:

[0047] 100 - Acquisition module; 110 - Confirmation module; 120 - Adjustment module. Detailed Implementation

[0048] To reduce energy consumption and improve user comfort and satisfaction, multi-split air conditioning systems have become an important component of modern building energy conservation and intelligent management. These systems can simultaneously provide cooling, heating, and hot water, and are widely used in diverse settings such as residential communities, hotels, shopping malls, and hospitals. They not only significantly reduce building energy consumption but also enable personalized temperature control through flexible zone settings, providing users with a more convenient and comfortable experience.

[0049] Currently, fan control plays a crucial role in multi-split hot water air conditioning systems. However, in existing technologies, when a multi-split hot water air conditioning system with dual fans is operating for cooling and hot water production, at lower outdoor ambient temperatures, the outdoor ambient temperature can meet the heat dissipation requirements of the outdoor heat exchanger, so there is no need for many fans to drive heat dissipation. If the system still uses dual fans for heat dissipation at this time, the operating high pressure and air velocity of the multi-split hot water air conditioning system will be lower, resulting in a reduction in fan current.

[0050] In addition, when users use domestic water, the hot water temperature will gradually decrease. In order to maintain the water temperature, as much refrigerant as possible needs to flow into the hydraulic module for heat exchange. This will cause the system pressure to decrease, which will increase the fan speed and thus increase the fan current.

[0051] Obviously, in a multi-split air conditioning system with dual fans, changes in outdoor ambient temperature and water temperature during cooling and hot water production can cause fluctuations in fan current, leading to unstable operation and significantly impacting the user experience. Furthermore, the system automatically activates fault protection when the fan current falls below or exceeds the minimum current requirement, which also inconveniences users.

[0052] Based on this, embodiments of this application provide an air conditioning control method, apparatus, multi-split hot water air conditioning system, and storage medium to solve the above problems.

[0053] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0054] First, this application provides a multi-split hot water air conditioning system. Specifically, Figure 1 For a structural schematic diagram of a multi-split hot water air conditioning system provided in the embodiments of this application, please refer to [link / reference]. Figure 1 The multi-split hot water air conditioning system may include an outdoor unit, multiple indoor units and a hot water module, wherein the hot water module 120 includes a hydraulic module and a water tank.

[0055] Optionally, the outdoor unit can be connected to the hydraulic module via a high-pressure gas pipe and a high-pressure liquid pipe, and to the indoor unit via a high-pressure liquid pipe and a low-pressure gas pipe.

[0056] Alternatively, the multi-split hot water air conditioning system can be a dual-fan system.

[0057] In this embodiment, the system can be set to operate at high pressure to ensure that the high-pressure refrigerant enters the hydraulic module for sufficient heat exchange, thereby ensuring the hot water production effect.

[0058] Optionally, the multi-split hot water air conditioning system may also include a controller, for example, installed in the outdoor unit, which can execute a computer program to implement the air conditioning control method provided in the embodiments of this application.

[0059] Optionally, the multi-split hot water air conditioning system is a dual-fan system.

[0060] The following is based on the above. Figure 1 The multi-split hot water air conditioning system in this application serves as the implementing entity. The air conditioning control method provided in this embodiment is illustrated with a flowchart. Specifically, Figure 2 Please refer to the flowchart of an air conditioning control method provided in this application embodiment. Figure 2 The method includes:

[0061] Step S20: When the multi-split hot water air conditioning system is in both cooling and hot water production mode, obtain the fan operating parameters of each fan.

[0062] Optionally, the multi-split hot water air conditioning system can acquire the fan operating parameters of each fan in real time, or it can acquire the fan operating parameters of each fan at regular intervals.

[0063] Step S21: Determine whether the multi-split hot water air conditioning system is in a state of fan fluctuation based on the fan operating parameters.

[0064] Optionally, the fan fluctuation state refers to the fan speed fluctuating multiple times within a certain period of time due to changes in fan current, at which point the multi-split hot water air conditioning system cannot maintain stable operation.

[0065] Step S22: When the multi-split hot water air conditioning system is in a state of fan fluctuation, determine the fan adjustment strategy based on the current outdoor ambient temperature.

[0066] Understandably, since the outdoor ambient temperature affects the heat dissipation requirements of the multi-split air conditioning system on the outdoor heat exchanger, the current adjustment of the multi-split hot water air conditioning system can be determined based on the outdoor ambient temperature, thereby adjusting the fan operation status.

[0067] In one possible implementation, the fan adjustment strategy may include single / dual fan switching and adjustments for operating high pressure values.

[0068] Step S23: Adjust the multi-split hot water air conditioning system according to the fan adjustment strategy to ensure stable fan operation.

[0069] The air conditioning control method provided in this application allows a multi-split hot water air conditioning system to determine whether it is experiencing fan fluctuations when operating in both cooling and hot water production modes, based on the operating parameters of each fan. If fan fluctuations are confirmed, a fan adjustment strategy is determined based on the current outdoor ambient temperature. This strategy allows for adjustments to the multi-split hot water air conditioning system. By adjusting the fans, the problem of frequent fan fluctuations can be mitigated, ensuring stable operation of the multi-split hot water air conditioning system and improving user experience. Furthermore, since timely adjustments can be made when fan fluctuations occur to alleviate the problem, the frequency of fault protection activation in the multi-split hot water air conditioning system can be reduced, further enhancing the user experience.

[0070] In one possible implementation, the multi-split hot water air conditioning system can determine whether each fan is in a fluctuating state based on its operating parameters, and if any fan is in a fluctuating state, the multi-split hot water air conditioning system is determined to be in a fluctuating fan state.

[0071] Optionally, the fan operating parameters may include the fan speed. In this case, the multi-split hot water air conditioning system can determine that the fan is in a fluctuating state if the number of times the fan speed fluctuates within a first preset time period meets the preset fluctuation conditions.

[0072] If the change in fan speed within the second preset time exceeds the preset value, then the fan speed is determined to have fluctuated once; the first preset time is longer than the second preset time.

[0073] Optionally, the first preset duration, the second preset duration, and the preset value can all be set according to the actual application. For example, the first preset duration can be 10 minutes, the second preset duration can be 60 seconds, and the preset value can be 50 rpm.

[0074] Optionally, the speed change value can be the difference between the maximum speed and the minimum speed within a second preset time period.

[0075] In this embodiment, the multi-split hot water air conditioning system can acquire the wind speed of each fan in real time when the cooling + hot water operation mode is turned on, and calculate the change value of the fan speed of each fan within a second preset time period from the current time. If the change value of the fan speed exceeds the preset value, it is determined that a fluctuation has occurred. The number of fluctuations of each fan within the first preset time period is counted, and the number of fluctuations is used to determine whether each fan is in a fluctuating state.

[0076] Optionally, the preset fluctuation condition can be either the total number of fluctuations reaching a preset number, or the number of fluctuations per minute reaching the upper limit of the average number of fluctuations.

[0077] Please refer to the example above. The preset fluctuation condition can be that the total number of fluctuations within the first preset duration is greater than or equal to 30, or that there are 3 or more fluctuations per minute within the first preset duration.

[0078] Alternatively, the operating parameter of the fan can also be the fan current. The specific method for determining whether the fan is in a fluctuating state by using the fan current can be the same as the above process, and will not be elaborated on here.

[0079] The following section provides a possible approach to determining the fan adjustment strategy based on the current outdoor ambient temperature when a multi-split hot water air conditioning system is experiencing fan fluctuations.

[0080] Specifically, in Figure 2 On this basis, Figure 3 For another schematic flowchart of the air conditioning control method provided in the embodiments of this application, please refer to [link / reference]. Figure 3 The above step S22 can also be achieved through the following steps.

[0081] Step S22-1: If the current outdoor ambient temperature is lower than the preset ambient temperature and both fans are on, then the fan adjustment strategy is to shut down either fan.

[0082] Step S22-2: If the current outdoor ambient temperature is lower than the preset ambient temperature and only one fan is on, then the fan adjustment strategy is to shut down the fan.

[0083] Optionally, the preset ambient temperature can be set according to the actual application. In one possible implementation, the preset ambient temperature can be 10°C.

[0084] In this embodiment, the multi-split hot water air conditioning system can start dual-fan operation when it begins to cool and produce hot water, and at the same time determine whether the multi-split hot water air conditioning system is in a fan fluctuation state based on the operating parameters of each fan.

[0085] Understandably, if the multi-split hot water air conditioning system is initially determined to be in a fan fluctuation state, then both fans will obviously be running. Since the outdoor ambient temperature is low at this time, it can meet the heat dissipation requirements of the outdoor heat exchanger. Therefore, the fan speed can be maintained by switching to single fan operation mode to prevent excessive changes in current, thereby alleviating the fan fluctuation problem and ensuring the stable operation of the multi-split hot water air conditioning system.

[0086] Optionally, after switching to single-fan operation mode, the multi-split hot water air conditioning system can continue to determine whether the fan is in a fan fluctuation state based on the fan's operating parameters. If the system is determined to be in a fan fluctuation state again, it means that the heat dissipation requirements of the outdoor heat exchanger can be met even without the fan. Therefore, the fan can also be turned off to ensure stable system operation.

[0087] Step S22-3: If the outdoor ambient temperature is greater than or equal to the preset ambient temperature, then determine the fan adjustment strategy based on the hot water temperature of the multi-split hot water air conditioning system.

[0088] Optionally, if the current outdoor ambient temperature is greater than or equal to the preset ambient temperature, it means that the outdoor environment cannot meet the heat dissipation requirements of the outdoor heat exchanger. In this case, dual fans are needed to assist in heat dissipation, and the fans need to be adjusted in other ways.

[0089] The following section provides a possible approach to determining the fan adjustment strategy based on the hot water temperature of a multi-split hot water air conditioning system.

[0090] In one possible implementation, if the hot water temperature is greater than or equal to the preset water temperature, the fan adjustment strategy is determined to set the range of the operating high pressure value of the multi-split hot water air conditioning system to the first preset high pressure range; if the hot water temperature is less than the preset water temperature, the fan adjustment strategy is determined to set the range of the operating high pressure value of the multi-split hot water air conditioning system to the second preset high pressure range.

[0091] The upper and lower limits of the second preset high-voltage range are both less than the upper and lower limits of the first preset high-voltage range, and the difference between the upper and lower limits of the second preset high-voltage range is greater than the difference between the upper and lower limits of the first preset high-voltage range.

[0092] Optionally, the preset water temperature can be set according to the actual application. In one possible implementation, the preset water temperature can be 35°C.

[0093] Optionally, if the hot water temperature is greater than or equal to the preset water temperature, it means that the water temperature has reached the required water temperature for domestic use, and no more hot water production capacity is needed. Therefore, the operating high pressure value can be increased to the first preset high pressure range.

[0094] Understandably, the first preset high-pressure range should be greater than the range of operating high-pressure values ​​corresponding to the hot water temperature under fluctuating conditions. In this embodiment, by increasing the operating high-pressure value, the fan speed and refrigerant flow can be reduced accordingly, thereby alleviating the fan fluctuation problem and ensuring the stable operation of the multi-split hot water air conditioning system.

[0095] In one possible implementation, the first preset high-pressure range could be [48 bar, 52 bar].

[0096] Optionally, if the hot water temperature is lower than the preset water temperature, it means that the water temperature is insufficient to meet the water temperature required for domestic use. Therefore, it is necessary to increase the hot water production capacity to heat the water as soon as possible, but at the same time, it is also necessary to ensure the stable operation of the fan. In this case, the range of the operating high pressure value can be reduced and expanded compared to the first preset high pressure, so that the refrigerant flow can be increased while the fan speed can be appropriately increased to ensure that the fan does not fluctuate.

[0097] Understandably, the second preset high-pressure range should also be greater than the range of operating high-pressure values ​​corresponding to the hot water temperature under fluctuating conditions.

[0098] In one possible implementation, the second preset high pressure can be [42 bar, 50 bar].

[0099] Optionally, considering that if the multi-split hot water air conditioning system malfunctions, it may still be in a state of fan fluctuation even after all the fans are shut down or the operating high pressure value has been set to the first preset high pressure range and the second preset high pressure range, the multi-split hot water air conditioning system can be shut down for protection.

[0100] In this embodiment, after adjusting the multi-split hot water air conditioning system according to the fan adjustment strategy, if it is determined again that the multi-split hot water air conditioning system is in a fan fluctuation state and the multi-split hot water air conditioning system meets the preset conditions, then the multi-split hot water air conditioning system is shut down for protection.

[0101] Understandably, the preset conditions include both fans being off, or the operating high pressure value of the multi-split hot water air conditioning system falling within the first preset high pressure range, or the operating high pressure value of the multi-split hot water air conditioning system falling within the second preset high pressure range.

[0102] Optionally, if the fans have been adjusted to be all off, or the operating high pressure value is within the first preset high pressure range or the second preset high pressure range, but the multi-split hot water air conditioning system is still in a state of fan fluctuation, it can be determined that the multi-split hot water air conditioning system may have faults such as dirt blockage in the outdoor heat exchanger, relatively enclosed installation space, or fan damage. Therefore, the system can be shut down for protection and the user can be prompted to carry out maintenance.

[0103] This application also provides an air conditioning control device, specifically... Figure 4 Please refer to the schematic diagram of a module of the air conditioning control device provided in the embodiments of this application. Figure 4 The air conditioning control device includes: an acquisition module 100, a determination module 110, and an adjustment module 120.

[0104] The acquisition module 100 is used to acquire the fan operating parameters of each fan when the multi-split hot water air conditioning system is operating in both cooling and hot water production mode.

[0105] Understandably, the acquisition module 100 can also be used to perform the above step S20.

[0106] The determination module 110 is used to determine whether the multi-split hot water air conditioning system is in a state of fan fluctuation based on the fan operating parameters.

[0107] Understandably, the determining module 110 can also be used to perform the above step S21.

[0108] The determining module 110 is also used to determine the fan adjustment strategy based on the current outdoor ambient temperature when the multi-split hot water air conditioning system is in a fan fluctuation state.

[0109] Understandably, the determining module 110 can also be used to perform the above step S22.

[0110] The adjustment module 120 is used to adjust the fan according to the fan adjustment strategy.

[0111] Understandably, the adjustment module 120 can also be used to perform the above step S23.

[0112] Optionally, the determining module 110 is also used to determine whether each fan is in a fluctuating state based on its operating parameters; and to determine that the multi-split hot water air conditioning system is in a fluctuating state if any fan is in a fluctuating state.

[0113] Optionally, the determining module 110 is further configured to determine that the fan is in a fluctuating state if the number of times the fan speed fluctuates within the first preset time period meets the preset fluctuation condition; wherein, if the fan speed change value within the second preset time period exceeds the preset value, it is determined that the fan speed has fluctuated once; the first preset time period is longer than the second preset time period.

[0114] Optionally, the determining module 110 is further configured to determine the fan adjustment strategy as turning off either fan if the outdoor ambient temperature is lower than the preset ambient temperature and both fans are on; determine the fan adjustment strategy as turning off the fan if the outdoor ambient temperature is lower than the preset ambient temperature and only one fan is on; and determine the fan adjustment strategy based on the hot water temperature of the multi-split hot water air conditioning system if the outdoor ambient temperature is greater than or equal to the preset ambient temperature.

[0115] Understandably, the determining module 110 can also be used to perform the above steps S22-1 to S22-3.

[0116] Optionally, the determining module 110 is further configured to, if the hot water temperature is greater than or equal to a preset water temperature, determine the fan adjustment strategy as setting the range of the operating high pressure value of the multi-split hot water air conditioning system to a first preset high pressure range; if the hot water temperature is less than the preset water temperature, determine the fan adjustment strategy as setting the range of the operating high pressure value of the multi-split hot water air conditioning system to a second preset high pressure range; wherein the upper and lower limits of the second preset high pressure range are both less than the upper and lower limits of the first preset high pressure range, and the difference between the upper and lower limits of the second preset high pressure range is greater than the difference between the upper and lower limits of the first preset high pressure range.

[0117] Optionally, the adjustment module 120 is further configured to perform shutdown protection on the multi-split hot water air conditioning system if it is determined again that the multi-split hot water air conditioning system is in a fan fluctuation state and the multi-split hot water air conditioning system meets preset conditions; the preset conditions include both fans being in a closed state, or the operating high voltage value of the multi-split hot water air conditioning system being within a first preset high voltage range, or the operating high voltage value of the multi-split hot water air conditioning system being within a second preset high voltage range.

[0118] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a controller, can implement the air conditioning control method provided in this application.

[0119] While this application discloses the above information, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of this application; therefore, the scope of protection of this application shall be determined by the scope defined in the claims.

Claims

1. An air conditioning control method, characterized in that, The method, applied to a multi-split hot water air conditioning system, wherein the multi-split hot water air conditioning system is a dual-fan system, includes: When the multi-split hot water air conditioning system is operating in both cooling and hot water production mode, the operating parameters of each fan are obtained. Determine whether the multi-split hot water air conditioning system is in a fan fluctuation state based on the fan operating parameters; if the multi-split hot water air conditioning system is in a fan fluctuation state, determine the fan adjustment strategy based on the current outdoor ambient temperature; The fan is adjusted according to the fan adjustment strategy.

2. The method according to claim 1, characterized in that, Determining whether the multi-split hot water air conditioning system is in a fan fluctuation state based on the fan operating parameters includes: For each wind turbine, determine whether the wind turbine is in a fluctuating state based on the wind turbine's operating parameters; If any of the aforementioned fans are in the fluctuating state, it is determined that the multi-split hot water air conditioning system is in the fan fluctuating state.

3. The method according to claim 2, characterized in that, The fan operating parameters include the fan speed. Determining whether the fan is in a fluctuating state based on the fan operating parameters includes: if the number of times the fan speed fluctuates within a first preset time period meets a preset fluctuation condition, then the fan is determined to be in a fluctuating state; wherein, if the change value of the fan speed within a second preset time period exceeds a preset value, then the fan speed is determined to have fluctuated once; the first preset time period is longer than the second preset time period.

4. The method according to claim 1, characterized in that, When the multi-split hot water air conditioning system is in a fan fluctuation state, the fan adjustment strategy is determined according to the current outdoor ambient temperature, including: if the outdoor ambient temperature is lower than the preset ambient temperature and both fans are on, then the fan adjustment strategy is to shut down either fan. If the outdoor ambient temperature is lower than the preset ambient temperature and only one of the fans is on, then the fan adjustment strategy is determined to be to turn off the fan. If the outdoor ambient temperature is greater than or equal to the preset ambient temperature, the fan adjustment strategy is determined based on the hot water temperature of the multi-split hot water air conditioning system.

5. The method according to claim 4, characterized in that, The step of determining the fan adjustment strategy based on the hot water temperature of the multi-split hot water air conditioning system includes: If the hot water temperature is greater than or equal to the preset water temperature, then the fan adjustment strategy is determined to set the range of the operating high pressure value of the multi-split hot water air conditioning system to the first preset high pressure range. If the hot water temperature is lower than the preset water temperature, then the fan adjustment strategy is determined to set the range of the operating high pressure value of the multi-split hot water air conditioning system to the second preset high pressure range. Wherein, the upper and lower limits of the second preset high voltage range are both less than the upper and lower limits of the first preset high voltage range, and the difference between the upper and lower limits of the second preset high voltage range is greater than the difference between the upper and lower limits of the first preset high voltage range.

6. The method according to claim 1, characterized in that, After adjusting the multi-split hot water air conditioning system according to the fan adjustment strategy, the method further includes: If it is determined again that the multi-split hot water air conditioning system is in a fan fluctuation state and the multi-split hot water air conditioning system meets the preset conditions, then the multi-split hot water air conditioning system will be shut down for protection. The preset conditions include both fans being in a closed state, or the operating high pressure value of the multi-split hot water air conditioning system being within a first preset high pressure range, or the operating high pressure value of the multi-split hot water air conditioning system being within a second preset high pressure range.

7. An air conditioning control device, characterized in that, An application in a multi-split hot water air conditioning system, wherein the multi-split hot water air conditioning system is a dual-fan system, the device includes: The acquisition module is used to acquire the fan operating parameters of each fan when the multi-split hot water air conditioning system is operating in both cooling and hot water production mode. The determination module is used to determine whether the multi-split hot water air conditioning system is in a fan fluctuation state based on the fan operating parameters. The determining module is also used to determine a fan adjustment strategy based on the current outdoor ambient temperature when the multi-split hot water air conditioning system is in a fan fluctuation state. An adjustment module is used to adjust the fan according to the fan adjustment strategy.

8. The apparatus according to claim 7, characterized in that, The determining module is further configured to determine whether each fan is in a fluctuating state based on its operating parameters; and if any fan is in the fluctuating state, determine that the multi-split hot water air conditioning system is in a fan fluctuating state.

9. A multi-split hot water air conditioning system, characterized in that, The system includes a controller that executes a computer program to implement the method as described in any one of claims 1-6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the controller, it implements the method as described in any one of claims 1-6.

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