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

Abstract

The embodiment of the invention provides an air conditioner control method and device, a multi-connected hot water air conditioner system and a storage medium, and relates to the technical field of air conditioner control. Under the condition that the multi-connected hot water air conditioning system performs refrigeration and water heating operation, fan operation parameters of all fans are obtained; whether the multi-connected hot water air conditioning system is in a fan fluctuation state or not is determined according to the fan operation parameters; under the condition that the multi-connected hot water air conditioning system is in the fan fluctuation state, a fan adjusting strategy is determined according to the current outdoor environment temperature; and the draught fan is adjusted according to the draught fan adjusting strategy. Therefore, the problem of frequent fluctuation of the fan can be relieved by adjusting the fan, so that stable operation of the multi-connected hot water air conditioning system is ensured, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the field of air conditioning control technology, and in particular to an air conditioning control method, device, multi-split hot water air conditioning system and storage medium. Background Art

[0002] In order to reduce energy consumption and improve user comfort and satisfaction, multi-connected hot water air conditioning systems have become an important part of modern building energy conservation and intelligent management. This system can simultaneously realize the three functions of cooling, heating and hot water production, and is widely used in residential areas, hotels, shopping malls, hospitals and other diverse scenarios. It not only significantly reduces the energy consumption of buildings, but also realizes personalized temperature adjustment through flexible zoning control, bringing users a more convenient and comfortable experience.

[0003] At present, fan control plays a vital role in multi-split hot water air-conditioning systems. However, in the prior art, multi-split hot water air-conditioning systems with dual fans often have problems with fan fluctuations and thus cannot operate stably when performing cooling and hot water production. This problem will cause the multi-split hot water air-conditioning system to be unable to operate stably, resulting in a poor user experience. Summary of the invention

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

[0005] To solve the above problems, the present application provides an air conditioning control method, device, multi-split hot water air conditioning system and computer-readable storage medium.

[0006] In a first aspect, the present application provides an air conditioning control method, which is 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 comprises:

[0007] When the multi-connected hot water air conditioning system is in cooling and hot water production operation, obtaining fan operation parameters of each fan;

[0008] Determining whether the multi-split hot water air conditioning system is in a fan fluctuation state according to the fan operation parameters;

[0009] When the multi-split hot water air conditioning system is in a fan fluctuation state, determining a fan adjustment strategy according to the current outdoor ambient temperature;

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

[0011] The air conditioning control method provided in the embodiment of the present application can determine whether the multi-split hot water air conditioning system is in a fan fluctuation state according to the operating parameters of each fan when the multi-split hot water air conditioning system is in cooling and hot water production operation, and determine the fan adjustment strategy according to the current outdoor ambient temperature when the multi-split hot water air conditioning system is in a fan fluctuation state, so that the fan can be adjusted through the fan adjustment strategy. In this way, the problem of frequent fan fluctuations can be alleviated by adjusting the fan, thereby ensuring the stable operation of the multi-split hot water air conditioning system and improving the user experience.

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

[0013] For each fan, determine whether the fan is in a fluctuating state according to the fan operating parameters of the fan;

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

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

[0016] In an optional implementation manner, the fan operating parameter includes a fan speed, and determining whether the fan is in a fluctuating state according to the fan operating parameter of the fan includes:

[0017] If the number of fluctuations in the fan speed within the first preset time period meets the preset fluctuation condition, it is determined that the fan is in a fluctuating state; wherein, if the speed change value of the fan 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 greater than the second preset time period.

[0018] The air conditioning control method provided in the embodiment of the present application judges the fluctuation state of the fan by setting the first preset time, the second preset time, the preset number of times and the preset value, which can make the judgment process more rigorous and avoid false alarms or missed alarms.

[0019] In an optional implementation manner, when the multi-split hot water air conditioning system is in a fan fluctuation state, determining a fan adjustment strategy according to the current outdoor ambient temperature includes:

[0020] If the outdoor ambient temperature is lower than the preset ambient temperature and both fans are in the on state, the fan adjustment strategy is determined to be to turn off any one of the fans;

[0021] If the outdoor ambient temperature is lower than the preset ambient temperature and only one of the fans is in the on state, determining that the fan adjustment strategy is 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 according to the hot water temperature of the multi-split hot water air conditioning system.

[0023] The air conditioning control method provided in the embodiment of the present application takes into account that when cooling and hot water production are performed under low outdoor ambient temperature, the outdoor ambient temperature itself can meet the heat dissipation requirements of the outdoor heat exchanger, and there is no need for more fans to drive the heat dissipation. Therefore, in order to avoid the use of more fans together, resulting in a decrease in speed and current, thereby causing frequent fluctuations in the fan, the multi-split hot water air conditioning system can be adjusted by shutting down one fan to ensure that the fan can operate stably; and 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 to ensure that the fan can operate stably.

[0024] In an optional implementation, the step of determining the fan adjustment strategy according to 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, determining that the fan adjustment strategy is to set the range of the operating high pressure value of the multi-split hot water air conditioning system to a first preset high pressure range;

[0026] If the hot water temperature is lower than the preset water temperature, determining that the fan adjustment strategy is to set the range of the operating high pressure value of the multi-connected hot water air conditioning system to a second preset high pressure range;

[0027] Among them, the upper limit value and the lower limit value of the second preset high pressure range are both smaller than the upper limit value and the lower limit value of the first preset high pressure range, and the difference between the upper limit value and the lower limit value of the second preset high pressure range is greater than the difference between the upper limit value and the lower limit value of the first preset high pressure range.

[0028] The air conditioning control method provided in the embodiment of the present application, when the hot water temperature is high, since there is no need for more hot water making capacity, the range of the operating high pressure value can be set to the first preset high pressure range to reduce the fan speed and the refrigerant flow rate, so as to ensure stable operation of the fan; and when the hot water temperature is low, since it is necessary to increase the hot water making capacity, the range of the operating high pressure value can be set to the second preset high pressure range to increase the refrigerant flow rate and the fan speed while ensuring stable operation of the fan.

[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, shutdown protection is performed on the multi-split hot water air conditioning system;

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

[0032] The air conditioning control method provided in the embodiment of the present application, after the multi-split hot water air conditioning system is adjusted and the multi-split hot water air conditioning system meets the preset conditions, if the system is still in a fan fluctuation state, it means that the multi-split hot water air conditioning system may have certain faults, so it can be shut down for protection so that the multi-split hot water air conditioning system can be maintained in time.

[0033] In a second aspect, the present application provides an air conditioning control device, which is 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 device comprises:

[0034] An acquisition module, used for acquiring fan operation parameters of each fan when the multi-split hot water air conditioning system is in cooling and hot water production operation;

[0035] A determination module, used to determine whether the multi-connected hot water air conditioning system is in a fan fluctuation state according to the fan operation parameters;

[0036] The determination module is further configured to determine a fan adjustment strategy according to 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 the embodiment of the present application can obtain the fan operating parameters of each fan through the acquisition module when the multi-split hot water air conditioning system is in cooling and hot water production operation, determine whether the multi-split hot water air conditioning system is in a fan fluctuation state according to the fan operating parameters through the determination module, and determine the fan adjustment strategy according to the current outdoor ambient temperature when the multi-split hot water air conditioning system is in a fan fluctuation state, and adjust the multi-split hot water air conditioning system according to the fan adjustment strategy through the adjustment module to make the fan operate stably. In this way, the problem of frequent fan fluctuations can be alleviated by adjusting the fan, thereby ensuring the stable operation of the multi-split hot water air conditioning system and improving the user experience.

[0039] In an optional embodiment, the determination module is also used to determine whether the fan is in a fluctuating state according to the fan operating parameters of each fan respectively; when any of the fans is in the fluctuating state, it is determined that the multi-split hot water air conditioning system is in a fan fluctuating state.

[0040] In a third aspect, the present application provides a multi-split hot water air conditioning system, comprising a controller, wherein the controller implements the method described in any of the aforementioned embodiments by executing a computer program.

[0041] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a controller, implements the method as described in any one of the aforementioned embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of the structure of a multi-connected hot water air conditioning system provided in an embodiment of the present application;

[0043] Figure 2 A schematic diagram of a flow chart of an air conditioning control method provided in an embodiment of the present application;

[0044] Figure 3 Another schematic diagram of a flow chart of an air conditioning control method provided in an embodiment of the present application;

[0045] Figure 4 A schematic diagram of a module of an air conditioning control device provided in an embodiment of the present application.

[0046] Description of reference numerals:

[0047] 100 - acquisition module; 110 - determination module; 120 - adjustment module. DETAILED DESCRIPTION

[0048] In order to reduce energy consumption and improve user comfort and satisfaction, multi-connected hot water air conditioning systems have become an important part of modern building energy conservation and intelligent management. This system can simultaneously realize the three functions of cooling, heating and hot water production, and is widely used in residential areas, hotels, shopping malls, hospitals and other diverse scenarios. It not only significantly reduces the energy consumption of buildings, but also realizes personalized temperature adjustment through flexible zoning control, bringing users a more convenient and comfortable experience.

[0049] At present, fan control plays a vital role in multi-split hot water air-conditioning systems. However, in the prior art, when a multi-split hot water air-conditioning system with dual fans is operating for cooling and hot water production, at a relatively low outdoor ambient temperature, since the outdoor ambient temperature can meet the heat dissipation requirements of the outdoor heat exchanger, there is no need for more fans to drive heat dissipation. At this time, if the system still uses dual fans for heat dissipation, the operating high pressure and wind speed of the multi-split hot water air-conditioning system will be relatively low, thereby causing the fan current to decrease.

[0050] In addition, when users use domestic water, the hot water temperature will gradually drop. At this time, 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, thereby increasing the fan speed and increasing the fan current.

[0051] Obviously, when the dual-fan multi-split hot water air conditioning system is running for cooling and hot water, changes in the outdoor ambient temperature and water temperature may cause changes in the fan current, which in turn causes the fan to fluctuate. At this time, the multi-split hot water air conditioning system cannot operate stably, which has a significant impact on the user experience. And when the fan current is lower than the minimum current or higher than the minimum current, the multi-split hot water air conditioning system will automatically perform fault protection, which will also cause inconvenience to the user.

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

[0053] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0054] First, the embodiment of the present application provides a multi-connected hot water air conditioning system. Specifically, Figure 1 A schematic diagram of a multi-connected hot water air conditioning system provided in the embodiment of the present application is shown in FIG. 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 may be connected to the hydraulic module via a high-pressure gas pipe and a high-pressure liquid pipe, and connected to the indoor unit via a high-pressure liquid pipe and a low-pressure gas pipe.

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

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

[0058] Optionally, the multi-split hot water air conditioning system may further include a controller, for example, arranged in an outdoor unit, and the controller may implement the air conditioning control method provided in the embodiment of the present application by executing a computer program.

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

[0060] Next, the above Figure 1 The multi-connected hot water air conditioning system in the embodiment is used as the execution subject, and the air conditioning control method provided in the embodiment of the present application is introduced exemplarily in combination with the flow chart. Specifically, Figure 2 A flow chart of the air conditioning control method provided in the embodiment of the present application is shown in FIG. Figure 2 , the method comprising:

[0061] Step S20, when the multi-split hot water air conditioning system is in cooling and hot water production operation, the fan operation parameters of each fan are obtained.

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

[0063] Step S21, determining whether the multi-split hot water air conditioning system is in a fan fluctuation state according to the fan operation parameters.

[0064] Optionally, the fan fluctuation state refers to that the fan current changes cause the fan speed to fluctuate multiple times within a certain period of time, and 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 fan fluctuation state, determine a fan adjustment strategy according to the current outdoor ambient temperature.

[0066] It is understandable that since the outdoor ambient temperature will affect the heat dissipation requirements of the multi-split air-conditioning system for the outdoor heat exchanger, it is possible to determine how the multi-split hot water air-conditioning system should be adjusted according to the outdoor ambient temperature, thereby adjusting the fan operating status.

[0067] In a possible implementation, the fan adjustment strategy may include switching between single and double fans and adjusting the operating high pressure value.

[0068] Step S23, adjusting the multi-split hot water air conditioning system according to the fan adjustment strategy to ensure that the fan operates stably.

[0069] The air conditioning control method provided in the embodiment of the present application is that the multi-split hot water air conditioning system can determine whether the multi-split hot water air conditioning system is in a fan fluctuation state according to the operating parameters of each fan when the cooling and hot water production are in operation, and when it is determined that 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, so that the multi-split hot water air conditioning system can be adjusted by the fan adjustment strategy. In this way, the problem of frequent fan fluctuations can be alleviated by adjusting the fan, thereby ensuring the stable operation of the multi-split hot water air conditioning system, thereby improving the user experience. In addition, since the fan can be adjusted in time when it fluctuates to alleviate the problem of frequent fan fluctuations, the frequency of the multi-split hot water air conditioning system entering fault protection can also be reduced, thereby further improving 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 the fan operating parameters of the fan, and when any fan is in a fluctuating state, determine that the multi-split hot water air conditioning system is in a fan fluctuating state.

[0071] Optionally, the fan operating parameter may include a fan speed. The multi-split hot water air conditioning system may determine that the fan is in a fluctuating state if the number of fluctuations in the fan speed within a first preset time period meets a preset fluctuation condition.

[0072] Among them, if the speed change value of the fan 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 greater than the second preset time period.

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

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

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

[0076] Optionally, the preset fluctuation condition may be that the total number of fluctuations reaches a preset number, or that the number of fluctuations occurring per minute reaches an upper limit of the average number.

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

[0078] Optionally, the fan operating parameter may also be the fan current. The specific method of determining whether the fan is in a fluctuating state based on the fan current may be consistent with the above process and will not be elaborated herein.

[0079] Next, a possible implementation method is provided for how to determine the fan adjustment strategy according to the current outdoor ambient temperature when the multi-split hot water air conditioning system is in a fan fluctuation state.

[0080] Specifically, in Figure 2 On the basis of Figure 3 For another flow chart of the air conditioning control method provided in the embodiment of the present application, please refer to Figure 3 , the above step S22 can also be implemented 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 in the on state, the fan adjustment strategy is determined to be to turn off either fan.

[0082] Step S22-2: If the current outdoor ambient temperature is lower than the preset ambient temperature and only one fan is in the on state, the fan adjustment strategy is determined to be to turn off the fan.

[0083] Optionally, the preset ambient temperature can be set according to actual application conditions. In a 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 fans when starting cooling and hot water production, 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] It is understandable that if it is determined for the first time that the multi-split hot water air-conditioning system is in a fan fluctuation state, then obviously both fans are turned on and running at this time. Since the outdoor ambient temperature is relatively low at this time, the heat dissipation requirements of the outdoor heat exchanger can be met. Therefore, the fan speed can be maintained by switching to the single-fan operation mode to prevent its current from changing excessively, thereby alleviating the problem of fan fluctuation and ensuring the stable operation of the multi-split hot water air-conditioning system.

[0086] Optionally, after switching to the single-fan operation mode, the multi-split hot water air conditioning system can continue to determine whether it is in a fan fluctuation state based on the operating parameters of the fan. 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 if the fan is not needed. Therefore, the fan can also be turned off to ensure stable operation of the system.

[0087] Step S22-3: If the outdoor ambient temperature is greater than or equal to the preset ambient temperature, the fan adjustment strategy is determined according to 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. At this time, dual fans are required to assist in heat dissipation and adjust the fans by other means.

[0089] Next, a possible implementation method is provided for how to determine the fan adjustment strategy according to the hot water temperature of the 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 a first preset high pressure range; if the hot water temperature is lower 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 a second preset high pressure range.

[0091] Among them, the upper limit value and the lower limit value of the second preset high pressure range are both smaller than the upper limit value and the lower limit value of the first preset high pressure range, and the difference between the upper limit value and the lower limit value of the second preset high pressure range is greater than the difference between the upper limit value and the lower limit value of the first preset high pressure range.

[0092] Optionally, the preset water temperature can be set according to actual application conditions. In a 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 water temperature required for domestic water use and no more hot water production capacity is needed. Therefore, the operating high pressure value can be increased and its range can be increased to the first preset high pressure range.

[0094] It is understandable that the first preset high pressure range should be greater than the range of the corresponding operating high pressure value when the hot water temperature is in a fluctuating condition. In this embodiment, by increasing the operating high pressure value, the wind speed and refrigerant flow rate can be correspondingly reduced, 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 may 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 no longer sufficient to reach the water temperature required for domestic water use. Therefore, it is necessary to increase the hot water production capacity to heat the water as quickly as possible, but it is also necessary to ensure the stable operation of the fan. In this case, the range of some operating high pressure values ​​can be reduced and expanded compared to the first preset high pressure, so that the refrigerant flow rate can be increased while appropriately increasing the fan speed to ensure that the fan does not fluctuate.

[0097] It can be understood that the second preset high pressure range should also be larger than the range of the operating high pressure value corresponding to the hot water temperature under fluctuation conditions.

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

[0099] Optionally, considering that if there is a fault in the multi-split hot water air conditioning system, all fans may be turned off, or the operating high pressure value may still be in a fan fluctuation state after being 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 the multi-split hot water air-conditioning system is adjusted 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, the multi-split hot water air-conditioning system is shut down for protection.

[0101] It can be understood that the preset conditions include that both fans are in the off state, or the operating high pressure value of the multi-split hot water air conditioning system belongs to the first preset high pressure range, or the operating high pressure value of the multi-split hot water air conditioning system belongs to the second preset high pressure range.

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

[0103] The present application also provides an air conditioning control device, specifically, Figure 4 A schematic diagram of a module of the air conditioning control device provided in the embodiment of the present application is shown in FIG. 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 operation parameters of each fan when the multi-split hot water air conditioning system is in cooling and hot water production operation.

[0105] It can be understood that the acquisition module 100 can also be used to execute 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 fan fluctuation state according to the fan operation parameters.

[0107] It can be understood that the determination module 110 can also be used to execute the above step S21.

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

[0109] It can be understood that the determination module 110 can also be used to execute the above step S22.

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

[0111] It can be understood that the adjustment module 120 can also be used to execute the above step S23.

[0112] Optionally, the determination module 110 is also used to determine whether each fan is in a fluctuating state according to the fan operating parameters of the fan; when any fan is in a fluctuating state, it is determined that the multi-split hot water air conditioning system is in a fan fluctuating state.

[0113] Optionally, the determination module 110 is also used to determine that the fan is in a fluctuating state if the number of fluctuations in the fan speed within a first preset time period meets a preset fluctuation condition; wherein, if the fan speed change value within a second preset time period exceeds a preset value, it is determined that the fan speed has fluctuated once; the first preset time period is greater than the second preset time period.

[0114] Optionally, the determination module 110 is also used to determine that the fan adjustment strategy is to shut down any one fan if the outdoor ambient temperature is lower than the preset ambient temperature and both fans are in the on state; if the outdoor ambient temperature is lower than the preset ambient temperature and only one fan is in the on state, the fan adjustment strategy is to shut down the fan; if the outdoor ambient temperature is greater than or equal to the preset ambient temperature, the fan adjustment strategy is determined according to the hot water temperature of the multi-split hot water air conditioning system.

[0115] It can be understood that the determination module 110 can also be used to execute the above steps S22 - 1 to S22 - 3.

[0116] Optionally, the determination module 110 is also used to determine that the fan adjustment strategy is to set the range of operating high pressure values ​​of the multi-split hot water air-conditioning system to a first preset high pressure range if the hot water temperature is greater than or equal to the preset water temperature; if the hot water temperature is lower than the preset water temperature, the fan adjustment strategy is to set the range of operating high pressure values ​​of the multi-split hot water air-conditioning system to a second preset high pressure range; wherein the upper limit value and the lower limit value of the second preset high pressure range are both smaller than the upper limit value and the lower limit value of the first preset high pressure range, and the difference between the upper limit value and the lower limit value of the second preset high pressure range is greater than the difference between the upper limit value and the lower limit value of the first preset high pressure range.

[0117] Optionally, the adjustment module 120 is also used 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 that both fans are in the off state, or the operating high pressure value of the multi-split hot water air-conditioning system belongs to a first preset high pressure range, or the operating high pressure value of the multi-split hot water air-conditioning system belongs to a second preset high pressure range.

[0118] The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a controller, the air conditioning control method provided in the embodiment of the present application can be implemented.

[0119] Although the present application is disclosed as above, the present application is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application shall be subject to the scope defined by the claims.

Claims

1. An air conditioning control method, characterized in that: Applied to a multi-split hot water air conditioning system, the multi-split hot water air conditioning system is a dual-fan system, the method comprises: When the multi-connected hot water air conditioning system is in cooling and hot water production operation, obtaining fan operation parameters of each fan; Determine whether the multi-split hot water air conditioning system is in a fan fluctuation state according to the fan operation parameters; when the multi-split hot water air conditioning system is in a fan fluctuation state, determine a fan adjustment strategy according to 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: The determining, according to the fan operation parameters, whether the multi-split hot water air conditioning system is in a fan fluctuation state comprises: For each fan, determine whether the fan is in a fluctuating state according to the fan operating parameters of the fan; When any of the fans is in the fluctuation state, it is determined that the multi-split hot water air conditioning system is in the fan fluctuation state.

3. The method according to claim 2, characterized in that The fan operating parameters include the fan speed, and determining whether the fan is in a fluctuating state based on the fan operating parameters of the fan includes: if the number of fluctuations in the fan speed within a first preset time period meets a preset fluctuation condition, determining that the fan is in a fluctuating state; wherein, if the speed change value of the fan within a second preset time period exceeds a preset value, determining that the fan speed fluctuates once; and the first preset time period is greater 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, determining a fan adjustment strategy according to the current outdoor ambient temperature, including: if the outdoor ambient temperature is lower than a preset ambient temperature and both fans are in an on state, determining the fan adjustment strategy to turn off any one of the fans; If the outdoor ambient temperature is lower than the preset ambient temperature and only one of the fans is in the on state, determining that the fan adjustment strategy is 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 according to 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 according to 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, determining that the fan adjustment strategy is to set 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 lower than the preset water temperature, determining that the fan adjustment strategy is to set the range of the operating high pressure value of the multi-connected hot water air conditioning system to a second preset high pressure range; Among them, the upper limit value and the lower limit value of the second preset high pressure range are both smaller than the upper limit value and the lower limit value of the first preset high pressure range, and the difference between the upper limit value and the lower limit value of the second preset high pressure range is greater than the difference between the upper limit value and the lower limit value of the first preset high pressure 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, shutdown protection is performed on the multi-split hot water air conditioning system; The preset conditions include that both of the fans are in the off state, or the operating high pressure value of the multi-split hot water air conditioning system belongs to a first preset high pressure range, or the operating high pressure value of the multi-split hot water air conditioning system belongs to a second preset high pressure range.

7. An air conditioning control device, characterized in that: Applied to a multi-split hot water air conditioning system, the multi-split hot water air conditioning system is a dual-fan system, and the device comprises: An acquisition module, used for acquiring fan operation parameters of each fan when the multi-split hot water air conditioning system is in cooling and hot water production operation; A determination module, used to determine whether the multi-connected hot water air conditioning system is in a fan fluctuation state according to the fan operation parameters; The determination module is further configured to determine a fan adjustment strategy according to 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 device according to claim 7, characterized in that The determination module is also used to determine whether each fan is in a fluctuating state according to the fan operating parameters of the fan; when any of the fans is in the fluctuating state, determine that the multi-split hot water air conditioning system is in a fan fluctuating state.

9. A multi-connected hot water air conditioning system, characterized in that: The method comprises a controller, wherein the controller implements the method according to any one of claims 1 to 6 by executing a computer program.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a controller, the method according to any one of claims 1 to 6 is implemented.

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