Anti-condensation control method and device for indoor unit of air conditioner and air conditioner

Abstract

The invention relates to the technical field of air conditioners, and provides an anti-condensation control method and device of an air conditioner indoor unit and an air conditioner, and the anti-condensation control method of the air conditioner indoor unit comprises the steps that under the condition that the air conditioner indoor unit operates in a refrigeration or dehumidification mode, the operation mode, the indoor relative humidity and the indoor environment temperature of an indoor fan of the air conditioner indoor unit are obtained; determining that both the operation mode of the indoor fan and the indoor relative humidity meet a first preset condition, and controlling the air conditioner indoor unit to execute an anti-condensation control strategy; and in the anti-condensation control strategy, the operation mode of an indoor fan and the superheat degree of an evaporator of the air conditioner indoor unit are controlled according to the temperature difference between the indoor environment temperature and the set temperature. The condensation phenomenon can be effectively reduced on the premise that the refrigeration performance is not affected as far as possible, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an anti-condensation control method and device for an indoor unit of an air conditioner, and an air conditioner. Background Art

[0002] Air conditioners are widely used today as household appliances that improve indoor air quality. However, during use, especially in high-temperature and high-humidity environments, condensation can form inside the air conditioner. This condensation can cause discomfort to the user, pollute the indoor environment, and negatively impact the user experience. Summary of the Invention

[0003] The present invention provides an anti-condensation control method and device for an air conditioner indoor unit, and an air conditioner, which are used to solve the defect of condensation dripping that occurs when the air conditioner indoor unit is operated in a high temperature and high humidity environment in the related art. The method can effectively reduce the occurrence of condensation while minimizing the impact on the cooling performance, thereby improving the user experience.

[0004] The present invention provides an anti-condensation control method for an air-conditioning indoor unit, comprising:

[0005] When the air conditioner is in cooling or dehumidification operation, obtain the operation mode of the indoor fan of the air conditioner, the indoor relative humidity, and the indoor ambient temperature;

[0006] Determining that the operation mode of the indoor fan and the indoor relative humidity both meet a first preset condition, and controlling the air conditioner indoor unit to execute an anti-condensation control strategy;

[0007] In the anti-condensation control strategy, the operation mode of the indoor fan and the superheat of the evaporator of the air conditioner indoor unit are controlled according to the temperature difference between the indoor ambient temperature and the set temperature.

[0008] According to the present invention, a method for controlling condensation prevention of an indoor unit of an air conditioner is provided. In the anti-condensation control strategy, the operating mode of the indoor fan and the superheat of the evaporator of the indoor unit of the air conditioner are controlled according to the temperature difference between the indoor ambient temperature and the set temperature, including:

[0009] Determining that the temperature difference between the indoor ambient temperature and the set temperature is greater than or equal to a first preset value, controlling the indoor fan to switch from the current wind speed mode to the target wind speed mode, and to operate for a first preset time;

[0010] The wind speed of the target wind speed mode is greater than the wind speed of the current wind speed mode.

[0011] According to an anti-condensation control method for an air-conditioning indoor unit provided by the present invention, if the current wind speed mode of the indoor fan is a silent mode, the target wind speed mode is determined to be a low wind mode;

[0012] If the current wind speed mode of the indoor fan is the low wind mode, the target wind speed mode is determined to be the medium wind mode.

[0013] According to the present invention, a method for controlling condensation prevention of an indoor unit of an air conditioner further comprises:

[0014] If the indoor relative humidity still meets the first preset condition, the superheat of the evaporator is increased to the target superheat.

[0015] According to an anti-condensation control method for an air-conditioning indoor unit provided by the present invention, if the indoor relative humidity still meets the first preset condition, increasing the superheat of the evaporator to a target superheat, comprising:

[0016] If the indoor relative humidity still meets the first preset condition for a duration greater than or equal to a second preset time, the superheat degree of the evaporator is increased to a target superheat degree.

[0017] According to the present invention, a method for controlling condensation prevention of an indoor unit of an air conditioner is provided. In the anti-condensation control strategy, the operating mode of the indoor fan and the superheat of the evaporator of the indoor unit of the air conditioner are controlled according to the temperature difference between the indoor ambient temperature and the set temperature, and the method further includes:

[0018] It is determined that the temperature difference between the indoor ambient temperature and the set temperature is less than a first preset value, and the superheat of the evaporator is controlled to a target superheat.

[0019] According to the present invention, an anti-condensation control method for an air-conditioning indoor unit is provided, which determines that the operation mode of the indoor fan and the indoor relative humidity both meet a first preset condition, and controls the air-conditioning indoor unit to execute an anti-condensation control strategy, including:

[0020] Determine that the continuous operation time of the indoor fan in the silent mode or low wind mode is greater than or equal to a third preset time, and the indoor relative humidity is greater than or equal to a second preset value, and control the air conditioner indoor unit to execute the anti-condensation control strategy.

[0021] According to the present invention, a method for controlling condensation prevention of an air conditioner indoor unit further includes:

[0022] Determining that the operating mode of the indoor fan or the indoor relative humidity meets a second preset condition, and controlling the air-conditioning indoor unit to exit the anti-condensation control strategy.

[0023] According to the present invention, an anti-condensation control method for an air-conditioning indoor unit is provided, which determines that the operation mode of the indoor fan or the indoor relative humidity meets a second preset condition, and controls the air-conditioning indoor unit to exit the anti-condensation control strategy, including:

[0024] It is determined that the indoor fan is in high wind mode or strong wind mode, or the indoor relative humidity is less than a third preset value, and the air conditioner indoor unit is controlled to exit the anti-condensation control strategy.

[0025] According to the present invention, a method for controlling condensation prevention of an air conditioner indoor unit further includes:

[0026] It is determined that the air-conditioning indoor unit is shut down or switched to non-cooling or dehumidification operation, and the air-conditioning indoor unit is controlled to exit the anti-condensation control strategy.

[0027] The present invention also provides an anti-condensation control device for an air-conditioning indoor unit, comprising:

[0028] An acquisition module is used to obtain the operation mode of the indoor fan of the air conditioner indoor unit, the indoor relative humidity and the indoor ambient temperature when the air conditioner indoor unit is in cooling or dehumidification operation;

[0029] a first control module, configured to determine that the operation mode of the indoor fan and the indoor relative humidity both meet a first preset condition, and control the air conditioner indoor unit to execute an anti-condensation control strategy;

[0030] The second control module is used to control the operation mode of the indoor fan and the superheat of the evaporator of the air conditioner indoor unit according to the temperature difference between the indoor ambient temperature and the set temperature in the anti-condensation control strategy.

[0031] The present invention also provides an air conditioner, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned anti-condensation control method for the air conditioner indoor unit when executing the program.

[0032] The anti-condensation control method, device and air conditioner of the air-conditioning indoor unit provided by the present invention obtain the operating mode of the indoor fan of the air-conditioning indoor unit, the indoor relative humidity and the indoor ambient temperature when the air-conditioning indoor unit is in cooling or dehumidification operation, determine that the operating mode of the indoor fan and the indoor relative humidity meet the first preset condition, and control the air-conditioning indoor unit to execute the anti-condensation control strategy. In the anti-condensation control strategy, the operating mode of the indoor fan and the superheat of the evaporator of the air-conditioning indoor unit are controlled according to the temperature difference between the indoor ambient temperature and the set temperature. Combining the two strategies of wind speed regulation and evaporator superheat control, the occurrence of condensation can be effectively reduced while minimizing the impact on the refrigeration performance, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 This is one of the flow charts of the anti-condensation control method for the air-conditioning indoor unit provided by the present invention;

[0035] Figure 2 This is the second flow chart of the anti-condensation control method for the air-conditioning indoor unit provided by the present invention;

[0036] Figure 3 It is a structural schematic diagram of the anti-condensation control device of the air-conditioning indoor unit provided by the present invention;

[0037] Figure 4 It is a structural schematic diagram of the air conditioner provided by the present invention.

[0038] Reference numerals:

[0039] 301: acquisition module; 302: first control module; 303: second control module;

[0040] 401: processor; 402: communication interface;

[0041] 403: memory; 404: communication bus. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0043] In the description of the embodiments of the present invention, it should be noted that the terms “first”, “second”, etc. are only used for descriptive purposes and should not be understood as indicating or implying relative importance.

[0044] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0045] The following combination Figures 1-4 The present invention describes an anti-condensation control method and device for an air conditioner indoor unit and an air conditioner.

[0046] According to an embodiment of the first aspect of the present invention, referring to Figure 1 As shown, the anti-condensation control method for the air-conditioning indoor unit provided by the present invention mainly includes the following steps:

[0047] S101, when the air conditioner indoor unit is in cooling or dehumidification operation, obtaining the operation mode of the indoor fan of the air conditioner indoor unit, the indoor relative humidity, and the indoor ambient temperature;

[0048] S102: Determine that the operation mode of the indoor fan and the indoor relative humidity both meet a first preset condition, and control the air conditioner indoor unit to execute an anti-condensation control strategy;

[0049] S103. In the anti-condensation control strategy, the operation mode of the indoor fan and the superheat of the evaporator of the air conditioner indoor unit are controlled according to the temperature difference between the indoor ambient temperature and the set temperature.

[0050] Specifically, when the air conditioner is operating in cooling or dehumidification mode, key parameters are monitored and obtained in real time, including the current operating mode of the indoor fan (such as silent, low, medium or high winds), indoor relative humidity and indoor ambient temperature. The indoor relative humidity and indoor ambient temperature can be detected by the temperature and humidity sensor on the air conditioner indoor unit.

[0051] When the indoor fan operating mode is detected to meet specific conditions (e.g., low wind speed or silent operation for a certain period of time) and the indoor relative humidity reaches or exceeds a preset threshold (e.g., 75%), it indicates that there may be a high risk of condensation. In this case, the air conditioner indoor unit is controlled to activate the anti-condensation control strategy. By only executing the anti-condensation control strategy when both the indoor fan operating mode and the indoor relative humidity meet the preset conditions, the present invention can avoid misjudgment due to a single factor and effectively improve control accuracy.

[0052] When implementing the anti-condensation control strategy, fine-tune the adjustment based on the actual temperature difference between the indoor ambient temperature and the set temperature:

[0053] For example, when the difference between the indoor ambient temperature and the set temperature is large (e.g., ≥10°C), first try increasing the indoor fan speed (e.g., from low to medium) to improve the air mixing efficiency in the outlet area through air circulation and mixing, thereby indirectly raising the temperature in that area. This is because increasing the wind speed can accelerate indoor air flow, allowing for better mixing of hot and cold air, reducing the localized low-temperature zones formed near the outlet due to rapid cooling, and thus reducing the possibility of condensation. At the same time, enhanced air circulation also helps to more quickly remove condensed water droplets generated on the evaporator surface, reducing the occurrence and accumulation of condensation, thereby reducing the possibility of condensation.

[0054] If the indoor relative humidity is still high after a period of time (such as 5 minutes), the superheat of the evaporator is further adjusted and set to a target value (such as 5°C) to reduce the cooling efficiency of the evaporator surface, thereby increasing the outlet air temperature and reducing the occurrence of condensation.

[0055] When the temperature difference between the indoor ambient temperature and the set temperature is small (such as <10°C), the superheat of the evaporator is directly adjusted to the target superheat to avoid condensation caused by over-cooling and to keep the user comfort as unaffected as possible.

[0056] The advantage of the anti-condensation control method for the air-conditioning indoor unit provided by the implementation of the present invention lies in its dynamic response mechanism, which can flexibly take measures according to different operating conditions to ensure that while ensuring effective dehumidification or cooling, condensation in the air-conditioning indoor unit is prevented to the greatest extent possible, thereby improving the user experience.

[0057] According to one embodiment of the present invention, in the anti-condensation control strategy, the operation mode of the indoor fan and the superheat of the evaporator of the air conditioner indoor unit are controlled according to the temperature difference between the indoor ambient temperature and the set temperature, including:

[0058] Determine that the temperature difference between the indoor ambient temperature and the set temperature is greater than or equal to a first preset value, control the indoor fan to switch from the current wind speed mode to the target wind speed mode, and run for a first preset time;

[0059] The wind speed of the target wind speed mode is greater than the wind speed of the current wind speed mode.

[0060] Specifically, when the temperature difference between the indoor ambient temperature and the set temperature is detected to be greater than or equal to a first preset value, the initial anti-condensation control measure is automatically triggered. Specifically, the measure includes switching the indoor fan from the current wind speed mode to the target wind speed mode and maintaining the target wind speed for a first preset time.

[0061] The target wind speed mode here refers to an operating state where the wind speed is higher than the current wind speed mode. By increasing the wind speed, the circulation and mixing of air in the room can be accelerated, making the air temperature near the air outlet more uniform and reducing condensation caused by localized low temperatures. At the same time, higher wind speeds also help to more quickly remove condensation droplets on the evaporator surface, thereby reducing the risk of condensation and dripping.

[0062] Furthermore, if the indoor relative humidity remains high after the first preset period, simply increasing the wind speed is insufficient to effectively prevent condensation. Additional strategies will then be implemented, such as adjusting the evaporator superheat on the air conditioner's indoor unit to reduce the cooling intensity on the evaporator surface and further minimize the possibility of condensation. This phased, multi-dimensional intelligent control approach effectively addresses condensation issues in indoor air conditioners under specific operating conditions while ensuring user comfort.

[0063] According to one embodiment of the present invention, if the current wind speed mode of the indoor fan is the silent mode, the target wind speed mode is determined to be the low wind mode;

[0064] If the current wind speed mode of the indoor fan is the low wind mode, the target wind speed mode is determined to be the medium wind mode.

[0065] Specifically, when the indoor fan is detected to be in silent mode, the fan speed is automatically adjusted from silent to low to prevent condensation. This is because the lower wind speed in silent mode is not conducive to air circulation and humidity balance, while switching to low mode can moderately increase the airflow speed, thereby reducing the possibility of condensation water accumulating near the indoor unit outlet.

[0066] If the indoor fan is currently in low speed mode, it will increase the speed to medium speed mode if a preset condition is met (for example, the temperature difference is greater than or equal to a first preset value). By increasing the air volume and enhancing indoor air flow and mixing, it can more effectively prevent condensation caused by low temperature and high humidity environments.

[0067] This layered, step-by-step approach to adjusting wind speeds strikes a balance between user comfort and the equipment's anti-condensation performance. It avoids the suddenness of drastic changes in wind speed while ensuring appropriate anti-condensation measures are implemented in diverse environments. Combined with evaporator superheat adjustment, this invention provides a more refined and efficient anti-condensation control method for air conditioner indoor units.

[0068] According to one embodiment of the present invention, after the indoor fan operates in the target wind speed mode for a first preset time, the method further includes:

[0069] If the indoor relative humidity still meets the first preset condition, the superheat of the evaporator is increased to the target superheat.

[0070] Specifically, after the indoor fan is adjusted to the target wind speed mode and runs for the first preset time, the indoor relative humidity is checked again. If the indoor relative humidity still meets the first preset condition, that is, it is still at a high humidity level that is prone to condensation, it means that simply changing the wind speed cannot effectively solve the condensation problem.

[0071] In this case, further measures are taken to increase the evaporator's superheat to the target superheat, effectively establishing a dual anti-condensation control mechanism. Evaporator superheat refers to the difference between the actual refrigerant temperature during evaporation and its corresponding saturation temperature. Increasing the evaporator superheat reduces the cooling capacity of the evaporator surface, indirectly raising the air temperature at the outlet and reducing condensation caused by the contact between low temperatures and high humidity.

[0072] Through this series of dynamic and refined operations, the present invention aims to effectively prevent condensation problems in air-conditioning indoor units, while maintaining user comfort and efficient operation of the air-conditioning system as much as possible, avoiding excessive reduction in cooling effect or unnecessary increase in energy consumption.

[0073] According to one embodiment of the present invention, if the indoor relative humidity still satisfies the first preset condition, increasing the superheat of the evaporator to a target superheat includes:

[0074] If the indoor relative humidity still meets the first preset condition for a duration greater than or equal to a second preset time, the superheat of the evaporator is increased to a target superheat.

[0075] This embodiment of the present invention incorporates a delay determination mechanism before determining whether to increase the evaporator superheat. Specifically, after the indoor fan is switched to the target wind speed mode and operates for a first preset duration, the system continuously monitors whether the indoor relative humidity still meets the first preset condition for condensation. If the indoor relative humidity remains at a level that is likely to cause condensation for an extended period of time, further measures are taken to increase the evaporator superheat to the target superheat.

[0076] This design aims to enhance the stability and accuracy of the system, avoid misjudgment and unnecessary adjustments due to short-term humidity fluctuations, ensure the operating efficiency of the air-conditioning equipment and user comfort, and effectively prevent the occurrence of condensation.

[0077] Through this staged and logically ordered control method, the air-conditioning indoor unit anti-condensation control method of the present invention can better adapt to the needs under different environmental conditions and achieve an intelligent and efficient anti-condensation control effect.

[0078] According to one embodiment of the present invention, in the anti-condensation control strategy, the operation mode of the indoor fan and the superheat of the evaporator of the air conditioner indoor unit are controlled according to the temperature difference between the indoor ambient temperature and the set temperature, and further includes:

[0079] Determine that the temperature difference between the indoor ambient temperature and the set temperature is less than a first preset value, and control the superheat of the evaporator to a target superheat.

[0080] Specifically, when it is detected that the temperature difference between the indoor ambient temperature and the set temperature is less than the first preset value, it indicates that the temperature of the indoor environment itself is relatively close to the set temperature. At this time, directly adjusting the superheat of the evaporator to the target superheat can directly reduce the amount of refrigerant in the evaporator, reduce the cooling efficiency of the evaporator surface, and increase the air outlet temperature. It can more directly and effectively prevent condensation from occurring, and will not excessively affect the user's comfort and the cooling effect of the air conditioner.

[0081] Through this series of intelligent control means, the present invention achieves refined processing of the condensation problem of the air-conditioning indoor unit, which not only effectively solves the condensation problem, but also fully considers the user's needs for comfort and energy saving in actual usage scenarios, and improves the overall performance of the air-conditioning equipment.

[0082] According to one embodiment of the present invention, determining that the operation mode of the indoor fan and the indoor relative humidity both meet a first preset condition, and controlling the air conditioner indoor unit to execute an anti-condensation control strategy, includes:

[0083] Determine that the continuous operation time of the indoor fan in the silent mode or low wind mode is greater than or equal to the third preset time, and the indoor relative humidity is greater than or equal to the second preset value, and control the air conditioner indoor unit to execute the anti-condensation control strategy.

[0084] In this embodiment of the present invention, the conditions for triggering the anti-condensation control strategy are set more accurately. When the following conditions are detected, the anti-condensation control strategy is activated:

[0085] 1. The indoor fan is operating in silent or low speed mode for a period of time equal to or greater than the third preset time. At these lower speeds, air circulation and mixing are less effective, which can increase the temperature difference near the air outlet and cause condensation.

[0086] 2. At the same time, the indoor relative humidity is greater than or equal to the second preset value, indicating that the indoor air humidity is high at this time, increasing the possibility of condensation.

[0087] When both of these conditions are met, the system determines that the current environment may present a high condensation risk, avoiding misjudgment based on a single factor. It then automatically and accurately implements an anti-condensation control strategy, adjusting the indoor fan speed pattern and the evaporator superheat to prevent condensation. This series of intelligent control measures not only ensures the normal operation of air conditioning equipment in various complex environments, but also fully considers user comfort needs, demonstrating the effective application of refined and intelligent control technologies in this invention.

[0088] According to one embodiment of the present invention, the anti-condensation control method of the air conditioner indoor unit of the present invention further includes:

[0089] Determining whether the operating mode of the indoor fan or the indoor relative humidity meets the second preset condition and controlling the air conditioner indoor unit to exit the anti-condensation control strategy specifically includes:

[0090] It is determined that the indoor fan is in high wind mode or strong mode, or the indoor relative humidity is less than a third preset value, and the air conditioner indoor unit is controlled to exit the anti-condensation control strategy.

[0091] In this embodiment of the present invention, the anti-condensation control method for the air conditioner indoor unit not only covers the conditions for starting the anti-condensation control strategy, but also includes specific scenarios for exiting the strategy. When any of the following conditions is detected, it is determined that the current environment no longer requires the anti-condensation control strategy to be executed, and the system automatically returns to normal operating mode:

[0092] 1. Change the indoor fan operating mode to high wind mode or strong mode (wind speed greater than high wind mode): In these two modes, the air circulation speed is fast, which can effectively improve the air mixing efficiency in the area near the air outlet and reduce the possibility of condensation caused by local low temperature. Therefore, when the fan is switched to high wind speed state, it means that the risk of condensation has been reduced.

[0093] 2. The indoor relative humidity drops below the third preset value: This means that the indoor humidity level has dropped to a low level that does not easily cause condensation. In this case, even if the temperature difference is large, no special anti-condensation measures are required due to insufficient humidity.

[0094] When any of the above conditions is met, the air conditioner indoor unit is controlled to exit the anti-condensation control strategy and return to the normal cooling or dehumidification mode, ensuring that the equipment can operate in the optimal manner under different working conditions, ensuring user comfort and avoiding unnecessary energy consumption and equipment burden.

[0095] According to one embodiment of the present invention, the anti-condensation control method of the air conditioner indoor unit of the present invention further includes:

[0096] It is determined that the air conditioner indoor unit is stopped or switched to non-cooling or dehumidification operation, and the air conditioner indoor unit is controlled to exit the anti-condensation control strategy.

[0097] In this embodiment of the present invention, the anti-condensation control method for the air conditioner indoor unit also considers two other scenarios when exiting the anti-condensation control strategy:

[0098] 1. Air Conditioner Indoor Unit Shutdown: When the air conditioning system stops operating, there is no cooling or dehumidification process, so condensation caused by temperature differences and humidity is naturally nonexistent. At this time, the air conditioner shutdown state is automatically identified and the anti-condensation control strategy is promptly exited.

[0099] 2. The air conditioner indoor unit switches to a non-cooling or dehumidification mode: If the user changes the air conditioner's operating mode, such as switching it to heating, ventilation, or other non-cooling and dehumidification modes, the conditions for condensation to occur are altered or eliminated because the evaporator's operating principle and effect in these modes differ from those in cooling or dehumidification. In this case, the air conditioning system will also detect the mode switch and exit the anti-condensation control strategy in a timely manner.

[0100] Through the above design, the present invention can realize intelligent management and flexible scheduling of the anti-condensation function of the air-conditioning indoor unit, ensuring that the equipment always adapts to the environmental conditions during actual use, which can not only effectively prevent condensation, but also save energy and improve user experience.

[0101] The anti-condensation control method for the air-conditioning indoor unit provided by the present invention is further described below with reference to a specific example. Figure 2 As shown, it mainly includes:

[0102] 1. Anti-condensation conditions:

[0103] (1) The indoor fan runs continuously in low wind or silent mode for ≥3 minutes;

[0104] (2) Indoor relative humidity ≥75%.

[0105] When the indoor air-conditioning unit is operating in cooling or dehumidification mode, the anti-condensation control strategy is executed if the above conditions are met at the same time:

[0106] When the indoor ambient temperature minus the set temperature is ≥10°C, the indoor fan speed is increased by one level (e.g., from silent to low speed, or from low speed to medium speed). After running for 5 minutes, if the indoor relative humidity is still ≥75%, the evaporator superheat is increased to 5°C.

[0107] When the indoor ambient temperature - set temperature is less than 10℃, set the evaporator superheat to 5℃.

[0108] 2. Anti-condensation exit conditions:

[0109] (1) When the indoor fan is switched to high wind speed or above;

[0110] (2) Indoor relative humidity < 60%;

[0111] (3) The air conditioner indoor unit is shut down or switched to non-cooling or dehumidification mode.

[0112] When the indoor air-conditioning unit is operating in cooling or dehumidification mode, the anti-condensation control strategy can be exited if any of the above conditions are met.

[0113] The anti-condensation control device for an air-conditioning indoor unit provided by the present invention is described below. The anti-condensation control device for an air-conditioning indoor unit described below and the anti-condensation control method for an air-conditioning indoor unit described above can be referred to in correspondence with each other.

[0114] According to an embodiment of the second aspect of the present invention, referring to Figure 3 As shown, the present invention also provides an anti-condensation control device for an air conditioner indoor unit, which mainly includes: an acquisition module 301, a first control module 302, and a second control module 303. The acquisition module 301 is used to obtain the operating mode of the indoor fan of the air conditioner indoor unit, the indoor relative humidity, and the indoor ambient temperature when the air conditioner indoor unit is in cooling or dehumidification operation; the first control module 302 is used to determine whether the operating mode of the indoor fan and the indoor relative humidity meet a first preset condition, and control the air conditioner indoor unit to implement an anti-condensation control strategy; the second control module 303 is used to control the operating mode of the indoor fan and the superheat of the evaporator of the air conditioner indoor unit according to the temperature difference between the indoor ambient temperature and the set temperature in the anti-condensation control strategy.

[0115] Specifically, the device consists of three key parts:

[0116] 1. Acquisition module 301: responsible for real-time monitoring and collection of necessary operating parameters when the air-conditioning indoor unit is operating in cooling or dehumidification mode. These parameters include but are not limited to the current operating mode of the indoor fan (such as silent, low wind, medium wind or high wind, etc.), the actual relative humidity of the indoor environment and the indoor temperature.

[0117] 2. First Control Module 302: Based on the data provided by Acquisition Module 301, this module triggers and executes the anti-condensation control strategy when it detects that the indoor fan's operating mode meets a preset low wind speed condition (for example, prolonged operation in silent or low wind mode) and the indoor relative humidity reaches or exceeds a first preset threshold. This step ensures that the appropriate anti-condensation measures are activated under specific environmental conditions that could cause condensation.

[0118] 3. Second Control Module 303: After the anti-condensation control strategy is activated, this module performs refined control based on the temperature difference between the actual indoor ambient temperature and the user-set temperature. Specifically, it adjusts the indoor fan operating mode based on the temperature difference, such as increasing the wind speed to improve air circulation and mixing efficiency and reduce localized low-temperature areas. Simultaneously, this module adjusts the superheat of the air conditioner's indoor evaporator. By altering the refrigerant's evaporation state on the evaporator, this module effectively prevents condensation near the air outlet due to low temperatures.

[0119] To sum up, the anti-condensation control device provided in the embodiment of the present invention integrates data acquisition, judgment logic and dynamic regulation. It can automatically identify operating conditions that may cause condensation and take corresponding intelligent control measures, thereby significantly reducing the risk of condensation in the air-conditioning indoor unit in a high temperature and high humidity environment, thereby improving user comfort and the overall performance of the equipment.

[0120] According to an embodiment of the third aspect of the present invention, referring to Figure 4 As shown, the present invention further provides an air conditioner, which may include: a processor 401, a communications interface 402, a memory 403, and a communications bus 404, wherein the processor 401, the communications interface 402, and the memory 403 communicate with each other via the communications bus 404. The processor 401 may call logic instructions in the memory 403 to execute an anti-condensation control method for an air conditioner indoor unit. The method includes: when the air conditioner indoor unit is in cooling or dehumidification operation, obtaining an operating mode of an indoor fan of the air conditioner indoor unit, indoor relative humidity, and indoor ambient temperature; determining that the operating mode of the indoor fan and the indoor relative humidity both meet a first preset condition, and controlling the air conditioner indoor unit to execute an anti-condensation control strategy; in the anti-condensation control strategy, controlling the operating mode of the indoor fan and the superheat of the evaporator of the air conditioner indoor unit based on the temperature difference between the indoor ambient temperature and a set temperature.

[0121] In addition, the logic instructions in the above-mentioned memory 403 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0122] On the other hand, the present invention also provides a computer program product, which includes a computer program, which can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the anti-condensation control method of the air-conditioning indoor unit provided by the above methods, the method including: when the air-conditioning indoor unit is in cooling or dehumidification operation, obtaining the operating mode of the indoor fan of the air-conditioning indoor unit, the indoor relative humidity and the indoor ambient temperature; determining that the operating mode of the indoor fan and the indoor relative humidity both meet the first preset condition, and controlling the air-conditioning indoor unit to execute the anti-condensation control strategy; in the anti-condensation control strategy, the operating mode of the indoor fan and the superheat of the evaporator of the air-conditioning indoor unit are controlled according to the temperature difference between the indoor ambient temperature and the set temperature.

[0123] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the anti-condensation control method for the air-conditioning indoor unit provided by the above-mentioned methods, the method comprising: when the air-conditioning indoor unit is in cooling or dehumidification operation, obtaining the operating mode of the indoor fan of the air-conditioning indoor unit, the indoor relative humidity and the indoor ambient temperature; determining that the operating mode of the indoor fan and the indoor relative humidity both meet a first preset condition, and controlling the air-conditioning indoor unit to execute the anti-condensation control strategy; in the anti-condensation control strategy, controlling the operating mode of the indoor fan and the superheat of the evaporator of the air-conditioning indoor unit according to the temperature difference between the indoor ambient temperature and the set temperature.

[0124] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0125] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or certain parts of the embodiments.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for controlling condensation prevention of an indoor unit of an air conditioner, characterized in that: include: When the air conditioner is in cooling or dehumidification operation, obtain the operation mode of the indoor fan of the air conditioner, the indoor relative humidity, and the indoor ambient temperature; Determining that the operation mode of the indoor fan and the indoor relative humidity both meet a first preset condition, and controlling the air conditioner indoor unit to execute an anti-condensation control strategy; In the anti-condensation control strategy, the operation mode of the indoor fan and the superheat of the evaporator of the air conditioner indoor unit are controlled according to the temperature difference between the indoor ambient temperature and the set temperature.

2. The anti-condensation control method for an air-conditioning indoor unit according to claim 1, characterized in that: In the anti-condensation control strategy, the operation mode of the indoor fan and the superheat of the evaporator of the air conditioner indoor unit are controlled according to the temperature difference between the indoor ambient temperature and the set temperature, including: Determining that the temperature difference between the indoor ambient temperature and the set temperature is greater than or equal to a first preset value, controlling the indoor fan to switch from the current wind speed mode to the target wind speed mode, and to operate for a first preset time; The wind speed of the target wind speed mode is greater than the wind speed of the current wind speed mode.

3. The anti-condensation control method for an air-conditioning indoor unit according to claim 2, characterized in that: If the current wind speed mode of the indoor fan is the silent mode, determining that the target wind speed mode is the low wind mode; If the current wind speed mode of the indoor fan is the low wind mode, the target wind speed mode is determined to be the medium wind mode.

4. The anti-condensation control method for an air-conditioning indoor unit according to claim 2, characterized in that: After the indoor fan operates at the target wind speed mode for a first preset time, the method further includes: If the indoor relative humidity still meets the first preset condition, the superheat of the evaporator is increased to the target superheat.

5. The anti-condensation control method for an air-conditioning indoor unit according to claim 4, characterized in that: If the indoor relative humidity still satisfies the first preset condition, increasing the superheat of the evaporator to a target superheat comprises: If the indoor relative humidity still meets the first preset condition for a duration greater than or equal to a second preset time, the superheat degree of the evaporator is increased to a target superheat degree.

6. The anti-condensation control method for an air-conditioning indoor unit according to claim 2, characterized in that: In the anti-condensation control strategy, the operation mode of the indoor fan and the superheat of the evaporator of the air conditioner indoor unit are controlled according to the temperature difference between the indoor ambient temperature and the set temperature, and further includes: It is determined that the temperature difference between the indoor ambient temperature and the set temperature is less than a first preset value, and the superheat of the evaporator is controlled to a target superheat.

7. The anti-condensation control method for an air-conditioning indoor unit according to claim 1, characterized in that: Determining that the operation mode of the indoor fan and the indoor relative humidity both meet a first preset condition, and controlling the air conditioner indoor unit to execute an anti-condensation control strategy, including: Determine that the continuous operation time of the indoor fan in the silent mode or low wind mode is greater than or equal to a third preset time, and the indoor relative humidity is greater than or equal to a second preset value, and control the air conditioner indoor unit to execute the anti-condensation control strategy.

8. The anti-condensation control method for an air-conditioning indoor unit according to any one of claims 1 to 7, characterized in that: Also includes: Determining that the operating mode of the indoor fan or the indoor relative humidity meets a second preset condition, and controlling the air-conditioning indoor unit to exit the anti-condensation control strategy.

9. The anti-condensation control method for an air-conditioning indoor unit according to claim 8, characterized in that: Determining that the operating mode of the indoor fan or the indoor relative humidity meets a second preset condition, and controlling the air conditioner indoor unit to exit the anti-condensation control strategy, includes: It is determined that the indoor fan is in high wind mode or strong wind mode, or the indoor relative humidity is less than a third preset value, and the air conditioner indoor unit is controlled to exit the anti-condensation control strategy.

10. The anti-condensation control method for an air-conditioning indoor unit according to any one of claims 1 to 7, characterized in that: Also includes: It is determined that the air-conditioning indoor unit is shut down or switched to non-cooling or dehumidification operation, and the air-conditioning indoor unit is controlled to exit the anti-condensation control strategy.

11. An anti-condensation control device for an air conditioner indoor unit, characterized in that: include: An acquisition module is used to obtain the operation mode of the indoor fan of the air conditioner indoor unit, the indoor relative humidity and the indoor ambient temperature when the air conditioner indoor unit is in cooling or dehumidification operation; a first control module, configured to determine that the operation mode of the indoor fan and the indoor relative humidity both meet a first preset condition, and control the air conditioner indoor unit to execute an anti-condensation control strategy; The second control module is used to control the operation mode of the indoor fan and the superheat of the evaporator of the air conditioner indoor unit according to the temperature difference between the indoor ambient temperature and the set temperature in the anti-condensation control strategy.

12. An air conditioner comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the anti-condensation control method for the air-conditioning indoor unit according to any one of claims 1 to 10 is implemented.

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