Anti-condensation control method and device, and multi-connected air conditioning system

Abstract

The application provides a condensation control method and device and a multi-connected air conditioning system, and relates to the technical field of air conditioners. A condensation control method is applied to an indoor unit of a multi-connected air conditioning system. The condensation control method comprises the following steps: when the multi-connected air conditioning system is in a refrigeration state and the indoor unit is in a start-up state, the water pump operating power of a water pump located in the indoor unit is obtained; according to the water pump operating power and a preset water pump power reference table, a target water pump power is determined; according to the target water pump power, environmental humidity information corresponding to the indoor unit is determined; and according to the environmental humidity information, the indoor unit is controlled to execute a preset condensation prevention program. Through the embodiment provided by the application, the water pump operating power of the water pump is used to more accurately determine the environmental humidity degree corresponding to the indoor unit, so as to determine whether to execute the condensation prevention program, thereby realizing accurate control of the condensation prevention program.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to an anti-condensation control method, device, and multi-split air conditioning system. Background Technology

[0002] Condensation in multi-split air conditioning units has always been a problem for manufacturers. When the air humidity is high, condensation easily forms on the surface of the air outlet of the indoor unit during cooling. As the condensation accumulates, the indoor unit may drip or leak water, which can damage the ceiling in severe cases. Condensation dripping water not only damages the original mounting structure, but can also affect the safe use of electrical components.

[0003] In related technologies, to address the condensation problem that may occur due to high humidity in the internal cooling system, a common approach is to add flocked cloth to the air conditioning vents and other areas prone to condensation. This prevents hot and cold air from coming into contact with the panel and the air conditioning vents, thus fundamentally solving the condensation problem. However, this method also has a drawback: adding too much flocked cloth can affect the machine's aesthetics and increase its cost.

[0004] Condensation in indoor units is more likely to occur when indoor humidity is high and the cooling fan is running at low speed. In this case, the indoor unit has insufficient heat exchange due to low air volume, resulting in a relatively low outlet air temperature. In the current technology, it is not possible to accurately determine whether the indoor unit is in a condensation condition based solely on the dry bulb temperature.

[0005] Another common approach using existing technology is to roughly calculate the indoor relative humidity using dry-bulb temperature, but the accuracy is not very high.

[0006] Therefore, how to achieve precise control over anti-condensation is a technical problem that urgently needs to be solved. Summary of the Invention

[0007] In view of this, the present invention provides an anti-condensation control method, device and multi-split air conditioning system, which realizes more accurate determination of the ambient humidity level of the indoor unit by the water pump operating power of the drain pump, thereby determining whether to execute the anti-condensation program, and thus achieving precise control of the anti-condensation program.

[0008] In a first aspect, the present invention provides an anti-condensation control method, applied to the indoor unit of a multi-split air conditioning system, the anti-condensation control method comprising:

[0009] When the multi-split air conditioning system is in cooling mode and the indoor unit is turned on, the water pump operating power of the water pump located in the indoor unit is obtained;

[0010] The target pump power is determined based on the pump operating power and the preset pump power reference table.

[0011] Based on the target water pump power, the ambient humidity information corresponding to the indoor unit is determined;

[0012] Based on the ambient humidity information, the indoor unit is controlled to execute a preset anti-condensation program.

[0013] Preferably, the anti-condensation control method provided in the embodiments of the present invention,

[0014] The step of determining the target water pump power based on the water pump operating power and a preset water pump power reference table includes:

[0015] Obtain multiple pump power values ​​from the preset pump power reference table;

[0016] The operating power of the water pump is compared with multiple water pump power values ​​to determine the target water pump power.

[0017] Preferably, the anti-condensation control method provided in the embodiments of the present invention,

[0018] The step of comparing the operating power of the water pump with multiple water pump power values ​​to determine the target water pump power includes:

[0019] The pump operating power is compared sequentially with multiple pump power values. If the difference between the pump operating power and the pump power value is within a preset range, the pump power value is determined to be the target pump power. The pump power values ​​are different for each pump.

[0020] Preferably, the anti-condensation control method provided in the embodiments of the present invention,

[0021] The step of determining the ambient humidity information corresponding to the indoor unit based on the target water pump power includes:

[0022] Based on the target water pump power, the wet-bulb temperature corresponding to the target water pump power is obtained;

[0023] Based on the wet-bulb temperature, the ambient humidity information corresponding to the indoor unit is determined.

[0024] Preferably, the anti-condensation control method provided in the embodiments of the present invention,

[0025] The step of controlling the indoor unit to execute a preset anti-condensation program based on the ambient humidity information includes:

[0026] The ambient humidity information is analyzed and processed to determine that the indoor unit is in a state prone to condensation.

[0027] When the indoor unit is in the condensation-prone state, control the indoor unit to execute the anti-condensation program.

[0028] Secondly, the present invention also provides an anti-condensation control device, applied to the indoor unit of a multi-split air conditioning system, the anti-condensation control device comprising:

[0029] A water pump operating power acquisition module is used to acquire the water pump operating power of the water pump located in the indoor unit when the multi-split air conditioning system is in cooling mode and the indoor unit is in the on state.

[0030] The target pump power determination module is used to determine the target pump power based on the pump operating power and a preset pump power reference table.

[0031] An ambient humidity information determination module is used to determine the ambient humidity information corresponding to the indoor unit based on the target water pump power.

[0032] The module for controlling the execution of the anti-condensation program is used to control the indoor unit to execute a preset anti-condensation program based on the ambient humidity information.

[0033] Preferably, the anti-condensation control device provided in the embodiment of the present invention,

[0034] The module for determining the target water pump power includes:

[0035] A module for obtaining multiple water pump power values ​​is used to obtain multiple water pump power values ​​from the preset water pump power reference table;

[0036] The first comparison module is used to compare the operating power of the water pump with multiple water pump power values ​​to determine the target water pump power.

[0037] Preferably, the anti-condensation control device provided in the embodiment of the present invention,

[0038] The first comparison module includes:

[0039] The second comparison module is used to compare the water pump operating power with a plurality of water pump power values ​​in sequence, and determine the water pump power value as the target water pump power if the difference between the water pump operating power and the water pump power value is within a preset range; wherein, the power values ​​of each water pump are different.

[0040] Preferably, the anti-condensation control device provided in the embodiment of the present invention,

[0041] The module for determining environmental humidity information includes:

[0042] A wet-bulb temperature module is used to obtain the wet-bulb temperature corresponding to the target water pump power based on the target water pump power;

[0043] A humidity determination module is used to determine the ambient humidity information corresponding to the indoor unit based on the wet-bulb temperature.

[0044] Preferably, the anti-condensation control device provided in the embodiment of the present invention,

[0045] The module for controlling the execution of the anti-condensation procedure includes:

[0046] The status analysis module is used to analyze and process the ambient humidity information to determine that the indoor unit is in a state prone to condensation.

[0047] The anti-condensation program module is used to control the indoor unit to execute the anti-condensation program when the indoor unit is in the condensation-prone state.

[0048] Thirdly, the present invention also provides a multi-split air conditioning system, including at least one outdoor unit and multiple indoor units, wherein the indoor units are equipped with an anti-condensation control device as described in any of the above.

[0049] This invention provides an anti-condensation control method, device, and multi-split air conditioning system. The anti-condensation control method is applied to the indoor unit of the multi-split air conditioning system. The method includes: when the multi-split air conditioning system is in cooling mode and the indoor unit is on, acquiring the operating power of the water pump located in the indoor unit; determining a target water pump power based on the water pump operating power and a preset water pump power reference table; determining the ambient humidity information corresponding to the indoor unit based on the target water pump power; and controlling the indoor unit to execute a preset anti-condensation program based on the ambient humidity information. This allows for more accurate determination of the ambient humidity level corresponding to the indoor unit by using the water pump operating power, thereby determining whether to execute the anti-condensation program and achieving precise control of the anti-condensation program. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0051] Figure 1 This is a flowchart illustrating an anti-condensation control method provided by the present invention;

[0052] Figure 2This invention provides Figure 1 A flowchart illustrating step S200;

[0053] Figure 3 This invention provides Figure 1 A flowchart illustrating step S300;

[0054] Figure 4 This invention provides Figure 1 A flowchart illustrating step S400;

[0055] Figure 5 This is a schematic diagram of the structure of an anti-condensation control device provided by the present invention. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0057] The following is combined Figures 1-5 The present invention describes an anti-condensation control method, device, and multi-split air conditioning system, which enables more precise determination of the ambient humidity level corresponding to the indoor unit by using the operating power of the drain pump, thereby determining whether to execute the anti-condensation program and achieving precise control of the anti-condensation program.

[0058] The specific implementation is illustrated in the following embodiments. First, an anti-condensation control method in an embodiment of the present invention is described.

[0059] like Figure 1 As shown, it is a schematic diagram of the implementation process of an anti-condensation control method provided by an embodiment of the present invention. An anti-condensation control method may include, but is not limited to, steps S100 to S400.

[0060] S100, when the multi-split air conditioning system is in cooling mode and the indoor unit is in power-on mode, the water pump operating power of the water pump located in the indoor unit is obtained;

[0061] S200, determine the target water pump power based on the water pump operating power and the preset water pump power reference table;

[0062] S300, based on the target water pump power, determines the ambient humidity information corresponding to the indoor unit;

[0063] S400, based on the ambient humidity information, controls the indoor unit to execute a preset anti-condensation program.

[0064] In step S100 of some embodiments, when the multi-split air conditioning system is in cooling mode and the indoor unit is in power-on mode, the water pump operating power of the water pump located in the indoor unit is obtained.

[0065] It is understandable that the water pump operating power is obtained when the multi-split air conditioning system is in cooling mode and the indoor unit is on.

[0066] It should be noted that the water pump can be a drainage pump.

[0067] It should be further noted that the water pump is located in the indoor unit and is used to transport drainage.

[0068] The operating power of the water pump is related to the operating power of the indoor unit when it is cooling, and the drainage volume of the water pump can be analyzed by the operating power of the water pump.

[0069] In step S200 of some embodiments, the target water pump power is determined based on the water pump operating power and a preset water pump power reference table.

[0070] It is understandable that after performing step S100, where the multi-split air conditioning system is in cooling mode and the indoor unit is on, and obtaining the water pump operating power of the water pump located in the indoor unit, the specific execution steps can be as follows: First, obtain multiple water pump power values ​​from the preset water pump power reference table; then, compare the water pump operating power with the multiple water pump power values ​​sequentially; if the difference between the water pump operating power and the water pump power value is within a preset range, determine the water pump power value as the target water pump power; wherein, each water pump power value is different.

[0071] In step S300 of some embodiments, the ambient humidity information corresponding to the indoor unit is determined based on the target water pump power.

[0072] It is understandable that after performing step S200, which determines the target water pump power based on the water pump operating power and the preset water pump power reference table, the specific execution steps can be as follows: first, obtain the wet-bulb temperature corresponding to the target water pump power based on the target water pump power, and then determine the ambient humidity information corresponding to the indoor unit based on the wet-bulb temperature.

[0073] In step S400 of some embodiments, the indoor unit is controlled to execute a preset anti-condensation program based on the ambient humidity information.

[0074] It is understandable that after step S300 is completed, which determines the ambient humidity information corresponding to the indoor unit based on the target water pump power, the specific execution steps can be as follows: First, the ambient humidity information is analyzed and processed to determine that the indoor unit is in a state prone to condensation. When the indoor unit is in the state prone to condensation, the indoor unit is controlled to execute the anti-condensation program.

[0075] By using the steps provided in the above embodiments, the operating power of the drain pump can be used to more accurately determine the ambient humidity level of the indoor unit, thereby determining whether to execute the anti-condensation program and achieving precise control of the anti-condensation program.

[0076] In some embodiments, reference Figure 2 As shown, step S200 may also include, but is not limited to, steps S210 to S220.

[0077] S210, Obtain multiple pump power values ​​from the preset pump power reference table;

[0078] S220, the operating power of the water pump is compared with multiple water pump power values ​​to determine the target water pump power.

[0079] In step S210 of some embodiments, multiple pump power values ​​from the preset pump power reference table are obtained.

[0080] It is understandable that multiple pump power values ​​are obtained from a preset pump power reference table.

[0081] It should be noted that the preset water pump power reference table is stored in a preset database and is obtained by statistically analyzing the water pump output power of the corresponding indoor air conditioning units under specific evaporation temperatures and speeds, and under different dry-bulb and wet-bulb cooling conditions.

[0082] In step S220 of some embodiments, the operating power of the water pump is compared with a plurality of water pump power values ​​to determine the target water pump power.

[0083] It is understandable that after completing step S210 to obtain multiple pump power values ​​from the preset pump power reference table, the specific execution steps can be as follows:

[0084] The actual pump operating power obtained in step S100 is compared with multiple pump power values ​​obtained in step S210 to determine the target pump power.

[0085] The pump operating power is compared sequentially with multiple pump power values. If the difference between the pump operating power and the pump power value is within a preset range, the pump power value is determined to be the target pump power.

[0086] It should be noted that the power values ​​of each of the aforementioned water pumps are different.

[0087] In some embodiments, the step of comparing the water pump operating power with a plurality of water pump power values ​​to determine the target water pump power includes:

[0088] The pump operating power is compared sequentially with multiple pump power values. If the difference between the pump operating power and the pump power value is within a preset range, the pump power value is determined to be the target pump power. The pump power values ​​are different for each pump.

[0089] Understandably, for example, multiple pump power values ​​in the preset pump power reference table are W1, W2, W3...Wn, and each pump power value is different. They can be arranged and combined in a preset order, either from smallest to largest or from largest to smallest.

[0090] The actual pump operating power obtained through step S100, for example, is Wi. Wi is then compared with multiple pump power values ​​W1, W2, W3, ... Wn in turn. The pump power value that is closest to Wi is determined from the multiple pump power values. The allowable difference in similarity must be within a preset range. The difference ratio corresponding to the preset range can be 5%, until the closest pump power value is determined as the target pump power.

[0091] In some embodiments, reference Figure 3 As shown, step S300 may also include, but is not limited to, steps S310 to S320.

[0092] S310, Based on the target water pump power, obtain the wet-bulb temperature corresponding to the target water pump power;

[0093] S320, determine the ambient humidity information corresponding to the indoor unit based on the wet-bulb temperature.

[0094] In step S310 of some embodiments, the wet-bulb temperature corresponding to the target water pump power is obtained based on the target water pump power.

[0095] It is understandable that after completing step S220, which compares the pump operating power with multiple pump power values ​​to determine the target pump power, the specific execution steps can be as follows:

[0096] Based on the target pump power determined in step S220, the wet-bulb temperature corresponding to the target pump power is obtained from the database.

[0097] It should be noted that wrapping the sensing part of a regular thermometer with damp gauze, with the lower end of the gauze immersed in water, maintains saturation of humidity around the sensing area. Ensuring adequate airflow around the gauze helps to bring the surrounding air close to isenthalpic. Once the reading stabilizes, the thermometer reading is approximately the wet-bulb temperature. This method is used to detect the humidity of the air in the current environment.

[0098] In step S320 of some embodiments, the ambient humidity information corresponding to the indoor unit is determined based on the wet-bulb temperature.

[0099] It is understandable that after performing step S310 to obtain the wet-bulb temperature corresponding to the target water pump power, the specific execution steps can be: determining the ambient humidity information corresponding to the indoor unit based on the wet-bulb temperature obtained in step S310.

[0100] The wet-bulb temperature is compared with a preset humidity table, and the ambient humidity information corresponding to the indoor unit is determined based on the wet-bulb temperature.

[0101] In some embodiments, reference Figure 4 As shown, step S400 may also include, but is not limited to, steps S410 to S420.

[0102] S410, The ambient humidity information is analyzed and processed to determine that the indoor unit is in a state prone to condensation.

[0103] S420, when the indoor unit is in the condensation-prone state, control the indoor unit to execute the anti-condensation program.

[0104] In step S410 of some embodiments, the ambient humidity information is analyzed and processed to determine that the indoor unit is in a state prone to condensation.

[0105] It is understandable that after performing step S320, which determines the ambient humidity information corresponding to the indoor unit based on the wet-bulb temperature, the specific execution steps can be: analyzing and processing the ambient humidity information obtained in step S320 to determine whether the indoor unit is in a state prone to condensation based on the ambient humidity information.

[0106] It should be further explained that the ambient humidity information is compared with the preset ambient humidity information. If the value of the ambient humidity information exceeds the value of the preset ambient humidity information, then the indoor unit will be considered to be in a state prone to condensation.

[0107] In step S420 of some embodiments, when the indoor unit is in the condensation-prone state, the indoor unit is controlled to execute the anti-condensation program.

[0108] It is understandable that after performing step S410 to analyze and process the environmental humidity information and determine that the indoor unit is in a state prone to condensation, the specific execution steps can be: when the indoor unit is in the state prone to condensation, control the indoor unit to execute the anti-condensation program.

[0109] It should be noted that the above-mentioned anti-condensation procedure may include, but is not limited to, the following specific steps:

[0110] 1. The air guide vane of the indoor unit is in the open position, and the angle of the air guide vane is adjusted to the minimum angle that it can reach;

[0111] 2. Control the indoor unit's fan to start running and keep the fan speed at the lowest possible speed. If there are multiple speed settings, adjust the current speed to the lowest setting.

[0112] 3. Control the indoor unit's drain pump to start working in order to drain the condensate from the drip tray outside the unit;

[0113] 4. Control the electronic expansion valve of the indoor unit to close, thereby preventing low-temperature refrigerant from entering the indoor unit and thus preventing the evaporator temperature of the indoor unit from dropping further.

[0114] It is worth noting that 1, 2, 3 and 4 above are optional states. In actual implementation, some of the steps can be executed, or all of the steps can be executed.

[0115] This invention provides an anti-condensation control method applied to the indoor unit of a multi-split air conditioning system. The method includes: when the multi-split air conditioning system is in cooling mode and the indoor unit is on, acquiring the operating power of the water pump located in the indoor unit; determining a target water pump power based on the water pump operating power and a preset water pump power reference table; determining the ambient humidity information corresponding to the indoor unit based on the target water pump power; and controlling the indoor unit to execute a preset anti-condensation program based on the ambient humidity information. This method achieves more accurate determination of the ambient humidity level corresponding to the indoor unit by using the water pump operating power of the drain pump, thereby determining whether to execute the anti-condensation program and achieving precise control of the anti-condensation program.

[0116] The present invention provides an anti-condensation control device, which can be referred to in correspondence with the anti-condensation control method described above.

[0117] like Figure 5 As shown, an anti-condensation control device is applied to the indoor unit of a multi-split air conditioning system. The anti-condensation control device includes:

[0118] The water pump operating power acquisition module 510 is used to acquire the water pump operating power of the water pump located in the indoor unit when the multi-split air conditioning system is in cooling mode and the indoor unit is in the on state.

[0119] The target water pump power determination module 520 is used to determine the target water pump power based on the water pump operating power and the preset water pump power reference table;

[0120] The ambient humidity information determination module 530 is used to determine the ambient humidity information corresponding to the indoor unit based on the target water pump power.

[0121] The control module 540 for executing the anti-condensation program is used to control the indoor unit to execute a preset anti-condensation program based on the ambient humidity information.

[0122] Optionally, an anti-condensation control device is provided according to an embodiment of the present invention.

[0123] The target pump power determination module 520 includes:

[0124] A module for obtaining multiple water pump power values ​​is used to obtain multiple water pump power values ​​from the preset water pump power reference table;

[0125] The first comparison module is used to compare the operating power of the water pump with multiple water pump power values ​​to determine the target water pump power.

[0126] Optionally, according to an embodiment of the present invention, an anti-condensation control device is provided, wherein the target water pump power determination module 520 includes:

[0127] The second comparison module is used to compare the water pump operating power with a plurality of water pump power values ​​in sequence, and determine the water pump power value as the target water pump power if the difference between the water pump operating power and the water pump power value is within a preset range; wherein, the power values ​​of each water pump are different.

[0128] Optionally, in an anti-condensation control device provided according to an embodiment of the present invention, the module 530 for determining ambient humidity information includes:

[0129] A wet-bulb temperature module is used to obtain the wet-bulb temperature corresponding to the target water pump power based on the target water pump power;

[0130] A humidity determination module is used to determine the ambient humidity information corresponding to the indoor unit based on the wet-bulb temperature.

[0131] Optionally, according to an embodiment of the present invention, an anti-condensation control device is provided, wherein the control module 540 for executing the anti-condensation procedure includes:

[0132] The status analysis module is used to analyze and process the ambient humidity information to determine that the indoor unit is in a state prone to condensation.

[0133] The anti-condensation program module is used to control the indoor unit to execute the anti-condensation program when the indoor unit is in the condensation-prone state.

[0134] This invention provides an anti-condensation control device applied to the indoor unit of a multi-split air conditioning system. When the multi-split air conditioning system is in cooling mode and the indoor unit is on, the device acquires the operating power of the water pump located in the indoor unit. Based on the water pump operating power and a preset water pump power reference table, a target water pump power is determined. Based on the target water pump power, the corresponding ambient humidity information for the indoor unit is determined. Based on the ambient humidity information, the indoor unit is controlled to execute a preset anti-condensation program. This allows for more accurate determination of the ambient humidity level corresponding to the indoor unit by using the water pump operating power, thereby determining whether to execute the anti-condensation program and achieving precise control of the anti-condensation program.

[0135] Optionally, the present invention also provides a multi-split air conditioning system, including at least one outdoor unit and multiple indoor units, wherein the indoor units are provided with an anti-condensation control device as described in any of the above embodiments.

[0136] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0137] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0138] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for preventing condensation control, characterized in that, The anti-condensation control method, applied to the indoor unit of a multi-split air conditioning system, includes: When the multi-split air conditioning system is in cooling mode and the indoor unit is turned on, the operating power of the water pump located in the indoor unit is obtained, and the water pump is used to discharge the condensate in the drip tray. The target pump power is determined based on the pump operating power and the preset pump power reference table. Based on the target water pump power, the ambient humidity information corresponding to the indoor unit is determined; The step of determining the ambient humidity information corresponding to the indoor unit based on the target water pump power includes: Based on the target water pump power, the wet-bulb temperature corresponding to the target water pump power is obtained; Based on the wet-bulb temperature, the ambient humidity information corresponding to the indoor unit is determined; Based on the ambient humidity information, the indoor unit is controlled to execute a preset anti-condensation program.

2. The method for preventing condensation control according to claim 1, characterized in that, The step of determining the target water pump power based on the water pump operating power and a preset water pump power reference table includes: Obtain multiple pump power values ​​from the preset pump power reference table; The operating power of the water pump is compared with multiple water pump power values ​​to determine the target water pump power.

3. The method for preventing condensation control according to claim 2, characterized in that, The step of comparing the operating power of the water pump with multiple water pump power values ​​to determine the target water pump power includes: The pump operating power is compared sequentially with multiple pump power values. If the difference between the pump operating power and the pump power value is within a preset range, the pump power value is determined to be the target pump power. The pump power values ​​are different for each pump.

4. The method for preventing condensation control according to claim 1, characterized in that, The step of controlling the indoor unit to execute a preset anti-condensation program based on the ambient humidity information includes: The ambient humidity information is analyzed and processed to determine that the indoor unit is in a state prone to condensation. When the indoor unit is in the condensation-prone state, control the indoor unit to execute the anti-condensation program.

5. An anti-condensation control device, characterized in that, The anti-condensation control device, applied to the indoor unit of a multi-split air conditioning system, includes: A water pump operating power acquisition module is used to acquire the water pump operating power of the water pump located in the indoor unit when the multi-split air conditioning system is in cooling mode and the indoor unit is in the on state. The water pump is used to discharge condensate from the drip tray. The target pump power determination module is used to determine the target pump power based on the pump operating power and a preset pump power reference table. An ambient humidity information determination module is used to determine the ambient humidity information corresponding to the indoor unit based on the target water pump power; the ambient humidity information determination module includes: a wet-bulb temperature obtaining module, used to obtain the wet-bulb temperature corresponding to the target water pump power based on the target water pump power; and a humidity determination module, used to determine the ambient humidity information corresponding to the indoor unit based on the wet-bulb temperature; The module for controlling the execution of the anti-condensation program is used to control the indoor unit to execute a preset anti-condensation program based on the ambient humidity information.

6. The anti-condensation control device according to claim 5, characterized in that, The module for determining the target water pump power includes: A module for obtaining multiple water pump power values ​​is used to obtain multiple water pump power values ​​from the preset water pump power reference table; The first comparison module is used to compare the operating power of the water pump with multiple water pump power values ​​to determine the target water pump power.

7. The anti-condensation control device according to claim 6, characterized in that, The first comparison module includes: The second comparison module is used to compare the water pump operating power with a plurality of water pump power values ​​in sequence, and determine the water pump power value as the target water pump power if the difference between the water pump operating power and the water pump power value is within a preset range; wherein, the power values ​​of each water pump are different.

8. The anti-condensation control device according to claim 5, characterized in that, The module for controlling the execution of the anti-condensation procedure includes: The status analysis module is used to analyze and process the ambient humidity information to determine that the indoor unit is in a state prone to condensation. The anti-condensation program module is used to control the indoor unit to execute the anti-condensation program when the indoor unit is in the condensation-prone state.

9. A multi-split air conditioning system, comprising at least one outdoor unit and multiple indoor units, characterized in that, The indoor unit is equipped with an anti-condensation control device as described in any one of claims 5 to 8.

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