Anti-condensation control method and air conditioning unit

Abstract

The application discloses a condensation control method and an air conditioning unit. The condensation control method comprises the following steps: after entering the condensation control mode, detecting whether there is condensate water at each air outlet of the indoor unit; analyzing the condensation cause and / or performing corresponding adjustment actions according to the actual number of the air outlets with condensate water, taking the air outlets with condensate water as condensation air outlets, calculating the ratio of the actual number of the condensation air outlets to the total number of all the air outlets; when the ratio is greater than a set value, determining that the indoor environment where the indoor unit is located is abnormal, and increasing the air outlet wind speed of the condensation air outlets; when the set value is greater than or equal to the ratio and the ratio is greater than 0, determining that the air outlet of the condensation air outlets is blocked, and adjusting the air sweeping angle of the condensation air outlets; and when the ratio is 0, determining that the indoor unit is abnormally installed, and sending a fault signal to the user. The application designs more refined control logic, and improves the condensation prevention effect and the user experience.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to a method for preventing condensation control and an air conditioning unit. Background Technology

[0002] Currently, most reported issues in air conditioner after-sales service involve condensation occurring under certain conditions when the air conditioner is turned on. Water drips from the air vents of wall-mounted and ceiling-mounted units, affecting the user experience. Existing technology has developed control solutions to reduce the risk of condensation. For example, these solutions can determine the risk of condensation based on the difference in indoor fan current or the difference in air temperature between the vents, and adjust the evaporator's airflow when there is a risk of condensation to prevent it from occurring.

[0003] From the perspective of the air conditioning cooling process, the airflow cooled by the evaporator is blown out of the air outlet and sent into the room. A large difference between the outlet air temperature and the ambient temperature, high air humidity, and unreasonable angle of the air sweeping blades can all lead to condensation problems. Existing control schemes cannot distinguish the causes of condensation and use a single adjustment action to deal with all condensation risks. Although it can reduce the risk of condensation to a certain extent, the control accuracy is poor. It not only has a significant impact on the indoor temperature but also cannot guarantee the anti-condensation effect. Summary of the Invention

[0004] To address the shortcomings of existing control schemes in terms of accuracy, this invention proposes an anti-condensation control method and air conditioning unit, which designs more refined control logic to improve the anti-condensation effect and user experience.

[0005] The technical solution adopted in this invention is to design an anti-condensation control method, which includes the following steps:

[0006] After entering the anti-condensation mode, check whether there is condensation at each air outlet of the indoor unit;

[0007] Analyze the causes of condensation based on the actual number of air outlets with condensate and / or take corresponding adjustment actions.

[0008] Furthermore, based on the number of air outlets where condensation occurs, the causes of condensation include:

[0009] Take the air outlets where condensate exists as condensation outlets and calculate the ratio of the actual number of condensation outlets to the total number of all air outlets.

[0010] When the ratio is greater than the set value, it is determined that the indoor environment where the indoor unit is located is abnormal;

[0011] And / or when the set value ≥ ratio > 0, the air outlet of the condensation vent is determined to be blocked;

[0012] And / or when the ratio = 0, the indoor unit is determined to be installed abnormally.

[0013] Furthermore, the corresponding adjustment actions performed based on the actual number of air outlets with condensate include:

[0014] Take the air outlets where condensate exists as condensation outlets and calculate the ratio of the actual number of condensation outlets to the total number of all air outlets.

[0015] When the ratio is greater than the set value, increase the air velocity at the condensation vent.

[0016] And / or when the set value ≥ ratio > 0, adjust the sweep angle of the condensation air outlet;

[0017] And / or when the ratio = 0, send a fault signal to the user.

[0018] Furthermore, the adjustment actions based on the actual number of air outlets with condensate also include:

[0019] After increasing the outlet air velocity of the condensation vent, check the condensation situation at the condensation vent every Δt time to see if it improves.

[0020] If so, maintain the current airflow speed;

[0021] If not, continue to increase the outlet air speed. Once the outlet air speed reaches the set upper limit speed, execute the dehumidification action.

[0022] Furthermore, if the indoor environment where the indoor unit is located is abnormal, the dew point temperature is adjusted according to the current indoor temperature and humidity parameters. During the cooling operation of the indoor unit, the outlet temperature of each air outlet is detected, and dehumidification is performed when at least one outlet temperature drops to the dew point temperature.

[0023] Furthermore, after performing at least one dehumidification action, the system checks whether the condensation at the condensation vent has improved. If not, a high humidity alert signal is sent to the user.

[0024] In some embodiments, the dehumidification action involves reducing the outlet air velocity and increasing the compressor operating frequency.

[0025] Furthermore, the adjustment actions based on the actual number of air outlets with condensate also include:

[0026] After adjusting the sweeping angle of the condensation air outlet, check whether the condensation situation at the condensation air outlet improves every Δt time.

[0027] If so, maintain the current sweep angle;

[0028] If not, continue adjusting the sweep angle of the condensation vent.

[0029] Furthermore, record the normal sweeping area where condensation improves and the abnormal sweeping area where condensation worsens. If the air outlet of the condensation vent is blocked again, avoid or quickly sweep through the abnormal sweeping area and slowly sweep through the normal sweeping area.

[0030] In some embodiments, each air outlet's sweeping blade is equipped with a photosensitive sensor, and the presence of condensation and / or whether the condensation situation has improved are determined based on the detection value of the photosensitive sensor.

[0031] Furthermore, determining the presence of condensation based on the detection values ​​of the photosensitive sensor includes:

[0032] When the indoor unit is running in cooling mode, the initial detection value of the photosensitive sensor is recorded. After entering the anti-condensation mode, the increase between the actual detection value of the photosensitive sensor and its corresponding initial detection value is calculated. If the increase exceeds the set threshold, it is determined that there is condensation at the air outlet where the photosensitive sensor is located.

[0033] Furthermore, judging the condensation situation based on the detection value of the photosensitive sensor includes: comparing the actual detection values ​​of the photosensitive sensor before and after two tests; if the decrease in the actual detection value exceeds the set fluctuation amount, then the condensation situation is judged to have improved.

[0034] Furthermore, the set fluctuation amount is adjusted according to the length of the detection interval Δt between two consecutive photosensitive sensors; the longer Δt is, the greater the set fluctuation amount is.

[0035] In some embodiments, the airflow speed of each air outlet of the indoor unit is adjusted synchronously, and the sweeping angle of each air outlet of the indoor unit is adjusted independently.

[0036] Furthermore, the air conditioning unit where the indoor unit is located is equipped with an anti-condensation mode, which users can manually activate by turning on the air conditioning unit.

[0037] The present invention also proposes an air conditioning unit, comprising: an outdoor unit, an indoor unit, and a controller, wherein the indoor unit has at least one air outlet, and the controller performs the above-described anti-condensation control method.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. Analyze the causes of condensation based on the actual number of air outlets with condensation and / or perform corresponding adjustments to accurately identify the causes of condensation, finely control the working status of the air outlets, ensure the anti-condensation effect, and improve the user experience;

[0040] 2. Design appropriate adjustment actions for different causes of condensation, which not only improves the condensation situation quickly, but also reduces the impact on indoor temperature;

[0041] 3. The photosensitive sensor installed on the air sweeping blades detects condensation at the air outlet, which is not affected by ambient temperature and humidity, air outlet temperature, air volume, etc., and the judgment results are more accurate.

[0042] 4. The air conditioning unit is equipped with an anti-condensation mode, which can be activated via remote control or wired controller. Users can flexibly set this mode according to their actual usage. Attached Figure Description

[0043] The present invention will now be described in detail with reference to the embodiments and accompanying drawings, wherein:

[0044] Figure 1 This is a schematic diagram of the overall process of the anti-condensation control method of the present invention;

[0045] Figure 2 This is a schematic diagram of the analysis process for the causes of condensation in this invention;

[0046] Figure 3 This is a schematic diagram of the execution flow of the adjustment action of the present invention;

[0047] Figure 4 This is a schematic diagram of the adjustment process for condensation at multiple air outlets in this invention;

[0048] Figure 5 This is a schematic diagram of the adjustment process for a small amount of condensate at the air outlet of the present invention;

[0049] Figure 6 This is a flowchart illustrating a specific application example of the present invention. Detailed Implementation

[0050] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0051] like Figure 1 As shown, the anti-condensation control method proposed in this invention is applicable to air conditioning units, especially those with multiple air outlets in the indoor unit. After entering the anti-condensation mode, the cause of condensation is analyzed based on the actual number of air outlets with condensate, and adjustment actions are rationally designed for different causes of condensation. Through more refined control and adjustment, the anti-condensation effect is improved. The anti-condensation control method can consist of two parts: the first part is analyzing the cause of condensation, and the second part is executing the corresponding adjustment actions. These two parts can be designed independently or simultaneously in the same control method, which will be described in detail below.

[0052] like Figure 2 As shown, the process for analyzing the causes of condensation is as follows:

[0053] After entering the anti-condensation mode, check whether there is condensation at each air outlet of the indoor unit;

[0054] Take the air outlets where condensate exists as condensation outlets and calculate the ratio of the actual number of condensation outlets to the total number of all air outlets.

[0055] When the ratio is greater than the set value, it indicates that there is condensation at most air outlets, indicating that the indoor environment where the indoor unit is located is abnormal, causing the air outlet temperature to reach the dew point temperature of the indoor environment.

[0056] When the set value ≥ ratio > 0, it indicates that there is only a small amount of condensate at the air outlet, and the air outlet of the condensate outlet is blocked.

[0057] When the ratio is 0, it indicates that there is no condensation at the air outlet, suggesting an installation problem with the indoor unit of the air conditioning unit. In other words, the dripping water from the indoor unit is caused by an installation issue. For example, if the indoor unit is installed at an angle, the drain pipe is blocked, the water full protection detection device is malfunctioning, or the drain pipe is installed higher than the drip tray, these are all signs of an installation problem. Water in the drip tray cannot be drained in time, causing it to overflow and drip. Specifically, the water full protection device activates when the drip tray is nearly full, alerting the user to a potential problem with the water pump. This is because during the cooling / dehumidifying operation of the air conditioning unit, if the water pump malfunctions and the drip tray is not drained promptly, the unit will trigger a water full protection alarm, indicating a potential problem with the water pump.

[0058] This invention can accurately identify the cause of condensation based on the actual number of condensation vents, and promptly notify users to report repairs or installers to carry out maintenance. Of course, in practical applications, it can also be selectively designed to identify one or two causes of condensation. For example, when the ratio is greater than a set value, it is determined that the indoor environment where the indoor unit is located is abnormal; when the ratio is 0, it is determined that the indoor unit of the air conditioning unit is installed abnormally.

[0059] like Figure 3 As shown, the working process for performing the corresponding adjustment action is as follows:

[0060] After entering the anti-condensation mode, check whether there is condensation at each air outlet of the indoor unit;

[0061] Take the air outlets where condensate exists as condensation outlets, and calculate the ratio of the actual number of condensation outlets to the total number of all air outlets, that is, (actual number of condensation outlets / total number of all air outlets) = ratio.

[0062] When the ratio is greater than the set value, it indicates that condensation exists in most air outlets. This may be due to indoor environmental factors causing the air outlet temperature to reach the dew point temperature. Therefore, the adjustment action is to increase the air outlet velocity of the condensation outlet by changing the operating parameters of the indoor fan. Increasing the air outlet velocity has two main functions: first, to improve heat exchange efficiency, making the air outlet temperature closer to the indoor ambient temperature and reducing the temperature difference at the air outlet, thereby reducing condensation; second, to increase the evaporation rate of condensation at the air outlet, reducing the probability of condensation formation.

[0063] When the set value ≥ ratio > 0, it indicates that there is only a small amount of condensation at the air outlet. This may be due to obstruction of the air outlet, causing condensation to form on the leeward side of the sweeping blades or in a place close to the sweeping blades. Therefore, the adjustment action is to adjust the sweeping angle of the condensation air outlet to ensure smooth airflow from the air outlet.

[0064] When the ratio is 0, it indicates that there is no condensation at the air outlet. The dripping water from the indoor unit may be due to an installation problem. Therefore, a fault signal is sent to the user to notify the user to report the problem or for the installer to repair it.

[0065] The adjustment actions of this invention—air outlet speed and air sweep angle—are designed based on the air outlet, so the refrigeration cycle of the air conditioning unit will not be affected. That is, the temperature of the evaporator remains unchanged, the indoor temperature fluctuates less, and the condensation situation is improved quickly.

[0066] It should be noted that the air outlet of the present invention refers to the air outlet located in the same indoor environment within the air conditioning unit. The set value can be flexibly designed according to specific needs. For example, the set value can be 0.5, that is, the cause of condensation and adjustment action can be distinguished by whether more than half of the air outlets have condensation.

[0067] like Figure 4 As shown, in some embodiments of the present invention, to improve the anti-condensation effect, for cases where the ratio > a set value, the adjustment action further includes:

[0068] After increasing the outlet air velocity of the condensation vent, check the condensation situation at the condensation vent every Δt time to see if it improves.

[0069] If so, it means that the current airflow speed can reduce condensation. Maintaining the current airflow speed will prevent the temperature difference between the air outlet and the indoor environment from being too large. While maintaining cooling, it will also prevent condensation from forming on the air sweeping blades, thus solving the problem of water dripping from the indoor unit.

[0070] If not, it means that the current air outlet speed cannot alleviate the condensation. Continue to increase the air outlet speed to improve heat exchange efficiency and condensate evaporation rate, thereby reducing the probability of condensation formation. After the air outlet speed reaches the set upper limit speed, it is determined that the indoor humidity is too high and the anti-condensation sponge at the air sweeping blades is full. Simply increasing the air outlet speed cannot improve the condensation phenomenon. Therefore, dehumidification is performed to reduce indoor humidity and solve the condensation problem.

[0071] It should be noted that the dehumidification process involves reducing the outlet air velocity and increasing the compressor operating frequency. Increasing the compressor operating frequency aims to lower the indoor evaporator temperature, while reducing the outlet air velocity allows the air to travel a longer distance from the inlet to the outlet. This ensures that the air makes full contact with the evaporator as it passes through, resulting in a lower air temperature. Consequently, the water saturation and dew point temperature decrease, making it easier for moisture in the air to condense near the evaporator. After most of the moisture in the air condenses and flows out on the evaporator, the air coming out of the outlet becomes drier, effectively reducing indoor humidity.

[0072] Based on this, in order to further improve the anti-condensation effect, after performing at least one dehumidification action, the condensation situation at the condensation vent is checked to see if it has improved. If not, a high humidity warning signal is sent to the user to remind them to close the doors and windows to prevent outdoor high humidity air from entering the room, and low-temperature dehumidification and cooling continues.

[0073] like Figure 5 As shown, in some embodiments of the present invention, to improve the anti-condensation effect, for cases where the set value ≥ ratio > 0, the adjustment action further includes:

[0074] After adjusting the sweeping angle of the condensation air outlet, check whether the condensation situation at the condensation air outlet improves every Δt time.

[0075] If so, it means that the current sweep angle can ensure that the airflow from the air outlet is delivered smoothly. Maintaining the current sweep angle will make the condensation at the air outlet disappear.

[0076] If not, it means that the current sweep angle is still obstructing the airflow. Continue to adjust the sweep angle of the condensation vent until the airflow from the vent is delivered smoothly.

[0077] Based on this, during the adjustment of the sweeping angle, the normal sweeping area where the condensation situation improves and the abnormal sweeping area where the condensation situation worsens are recorded. When it is determined again that the air outlet of the condensation vent is blocked—that is, the set value ≥ ratio > 0—avoid or quickly sweep through the abnormal sweeping area and slowly sweep through the normal sweeping area. The adjustment action can be executed immediately and accurately, which can speed up the improvement of the condensation situation.

[0078] This invention can perform corresponding adjustment actions based on the actual number of condensation vents, precisely controlling the working state of the air outlets, ensuring anti-condensation effect, and improving user experience. Of course, in practical applications, one or two of these adjustment actions can be selectively designed. For example, when the ratio is greater than the set value, the air velocity of the condensation vents can be increased; when the set value is greater than or equal to the ratio and greater than 0, the sweeping angle of the condensation vents can be adjusted.

[0079] In some embodiments of the present invention, in order to further improve the anti-condensation effect, when the ratio is greater than the set value—that is, when the indoor environment where the indoor unit is located is abnormal—the dew point temperature is adjusted according to the temperature and humidity parameters of the current indoor environment. During the cooling operation of the air conditioning unit, the outlet air temperature of each air outlet is detected, and dehumidification is performed when at least one outlet air temperature drops to the dew point temperature.

[0080] It should be noted that after the air conditioning unit enters the anti-condensation mode, it will continue to operate in cooling mode. When the outlet air temperature drops to the dew point temperature, condensation will occur. The air conditioning unit should perform dehumidification to reduce condensation. In practical applications, the dew point temperature can be adjusted according to the current indoor temperature and humidity parameters when the air conditioning unit enters the anti-condensation mode, or it can be adjusted according to the current indoor temperature and humidity parameters when the cooling operation is started. This invention does not impose any special restrictions on the timing of adjusting the set dew point temperature.

[0081] In some embodiments of the present invention, each air outlet's sweeping blade is equipped with a photosensitive sensor. The presence of condensation and / or improvement in condensation conditions are determined based on the sensor's detection value. The photosensitive sensor has its own light source and mirror. Its working principle is that the intensity of the light received after reflection by the mirror determines whether condensation has formed on the mirror surface. When condensation forms, it hangs on the mirror surface, affecting the reflection of light. The more and larger the condensation, the more significant the effect, and the weaker the reflected light received by the photosensitive sensor, resulting in a higher detection value. The photosensitive sensor can be installed near the end of the sweeping blade because condensation is more likely to form at the end of the blade than in the middle. The more and larger the condensation, the greater the effect of light reflection, allowing for a more accurate assessment of condensation conditions.

[0082] In some embodiments of the present invention, determining the presence of condensate based on the detection value of the photosensitive sensor includes:

[0083] When the air conditioning unit is turned on for cooling, record the initial detection value of the photosensitive sensor;

[0084] After the air conditioning unit enters the anti-condensation mode, calculate the increase between the actual detection value of the photosensitive sensor and its corresponding initial detection value.

[0085] Determine if the increase exceeds the set threshold; if so, determine if there is condensation at the air outlet where the photosensitive sensor is located.

[0086] In some embodiments of the present invention, determining the condensation status based on the detection value of the photosensitive sensor includes:

[0087] Compare the actual detection values ​​of the photosensitive sensor in the two tests conducted before and after;

[0088] Determine whether the decrease in the actual detected value exceeds the set fluctuation amount. If so, the condensation situation is considered to have improved.

[0089] It should be understood that, due to the inherent error in photosensitive sensor detection, the measured value will vary slightly each time. The set fluctuation amount here refers to the amount of change exceeding the detection error of the photosensitive sensor. That is, the decrease in the actual measured value of the photosensitive sensor between two consecutive measurements must exceed its normal error range before it can be determined that the condensation situation has improved, thus avoiding misjudgment caused by sensor detection error.

[0090] To improve control accuracy, in some embodiments of the present invention, the set fluctuation amount can be adjusted according to the length of the detection interval Δt between two consecutive photosensitive sensors. The longer Δt is, the larger the set fluctuation amount should be. The design principle is that during the adjustment process, if the adjustment action is effective, the condensation on the sweeping blades will decrease. The longer the interval Δt between two consecutive detections, the more the condensation is reduced, and the greater the reduction in the actual detected value will be. Therefore, the set fluctuation amount should also be larger. If the reduction does not exceed the set fluctuation amount, the condensation situation at the current air outlet has not improved or the improvement speed is relatively slow. The next step can be taken to accelerate the improvement speed of condensation.

[0091] It should be noted that in some application scenarios of this invention, after the air conditioning unit enters the anti-condensation mode, it only detects whether there is condensation at the air outlets that are already in operation; it does not detect the air outlets that are not in operation. Subsequently, only the air outlets that are already in operation will perform adjustment actions. The airflow speed of each air outlet of the indoor unit is adjusted synchronously, but the sweeping angle of each air outlet of the indoor unit is adjusted independently.

[0092] In some embodiments of the present invention, the air conditioning unit where the indoor unit is located is equipped with an anti-condensation mode. After the user finds that the indoor unit is dripping water, he / she can manually turn on the anti-condensation mode through a remote control or wired controller to put the air conditioning unit into the anti-condensation mode.

[0093] like Figure 6As shown, taking a specific application example of the present invention, the ceiling fan panel has four air outlets. A photosensitive sensor is installed on the sweeping blades of each air outlet. The photosensitive sensor and the air outlet are in a one-to-one correspondence. The four photosensitive sensors are referred to as A, B, C and D respectively. The implementation process of the anti-condensation control method is described in detail below.

[0094] When the air conditioning unit is running in cooling mode, the initial detection value of the photosensitive sensor is recorded. When the user manually turns on the air conditioning unit to enter the anti-condensation mode, it can be assumed that the indoor unit has started to drip water. The system detects whether there is condensation at each air outlet of the indoor unit, analyzes the cause of condensation based on the actual number of air outlets with condensation, and performs corresponding adjustment actions.

[0095] If at least three of A, B, C, and D change, and the increase between the actual detection value of the photosensitive sensor and its corresponding initial detection value exceeds the set threshold, it is considered that the air outlet temperature may have reached the dew point temperature due to indoor environmental reasons. Therefore, the air outlet velocity of the condensation vent is slowly increased, and the condensation situation of the condensation vent is checked every Δt time to see if it improves, that is, to determine whether the decrease in the actual detection value exceeds the set fluctuation amount.

[0096] If the actual decrease in the detected value exceeds the set fluctuation amount, the current air outlet speed will be maintained so that the temperature difference between the air outlet temperature and the indoor ambient temperature is not large. This will maintain cooling while also preventing condensation from forming on the air sweeping blades, thus solving the problem of water dripping from the indoor unit.

[0097] If the decrease in the actual detected value does not exceed the set fluctuation amount, it indicates that the indoor humidity is too high. Simply increasing the air outlet speed cannot improve the condensation phenomenon. Therefore, dehumidification is performed to reduce the indoor humidity and solve the condensation problem. If the condensation situation at the detected condensation vent still does not improve after at least one dehumidification operation, a high humidity warning signal is sent to the user to remind them to close the doors and windows to prevent high humidity outdoor air from entering the room, and low-temperature dehumidification and cooling will continue.

[0098] If only one or two of A, B, C, and D change, it is considered that the air outlet of the condensation vent may be obstructed, causing condensation to form on the leeward side of the sweeping blades or in a place close to the sweeping blades. Therefore, the adjustment action is to adjust the sweeping angle of the condensation vent and check whether the condensation situation of the condensation vent has improved every Δt time, that is, to determine whether the decrease in the actual detected value exceeds the set fluctuation amount.

[0099] If the actual decrease in the detected value exceeds the set fluctuation amount, the current sweep angle will be maintained to make the condensation at the air outlet disappear and solve the problem of water dripping from the indoor unit.

[0100] If the actual decrease in the detected value does not exceed the set fluctuation amount, continue to adjust the sweep angle of the condensation air outlet until the actual decrease in the detected value exceeds the set fluctuation amount.

[0101] The present invention also proposes an air conditioning unit, comprising: an outdoor unit, an indoor unit, and a controller, wherein the indoor unit has at least one air outlet, and the controller performs the above-described anti-condensation control method.

[0102] Air conditioning units using the anti-condensation control method proposed in this invention can automatically analyze the cause of condensation based on the actual number of air outlets with condensate and execute corresponding adjustment actions. The adjustment actions are rationally designed for different causes of condensation, achieving precise control of the working state of the air outlets. This not only improves the condensation situation quickly but also reduces the impact on indoor temperature and enhances the user experience.

[0103] Moreover, the air conditioning unit uses photosensitive sensors installed on the air sweeping blades to detect condensation at the air outlet, which is not affected by ambient temperature and humidity, air outlet temperature, air volume, etc., and the judgment results are more accurate.

[0104] In addition, the air conditioning unit is equipped with an anti-condensation mode, which can be activated via remote control or wired controller, allowing users to flexibly set it according to actual usage.

[0105] It should be noted that the terminology used above is for describing specific embodiments only and is not intended to limit the exemplary embodiments of the present invention. When the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. The order of execution of actions, steps, etc., in the apparatus and methods shown in the specification and drawings can be implemented in any order unless a specific order is expressly specified, and as long as the output of a previous process is not used in a subsequent process. Similar sequential terms used for ease of description do not imply that such an order must be followed.

[0106] Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0107] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for controlling condensation, characterized in that, Includes the following steps: After entering the anti-condensation mode, check whether there is condensation at each air outlet of the indoor unit; Analyze the causes of condensation based on the actual number of air outlets with condensate and implement corresponding adjustment actions; Calculate the ratio of the actual number of air outlets containing condensate to the total number of all air outlets, using the air outlets where condensate exists as condensation outlets. When the ratio is greater than the set value, it is determined that the indoor environment where the indoor unit is located is abnormal, and the air velocity of the condensation vent is increased. When the set value ≥ ratio > 0, it is determined that the air outlet of the condensation vent is blocked, and the sweeping angle of the condensation vent is adjusted. When the ratio is 0, the indoor unit is determined to be installed abnormally, and a fault signal is sent to the user.

2. The anti-condensation control method according to claim 1, characterized in that, The adjustment actions based on the actual number of air outlets with condensate also include: After increasing the air velocity at the condensation vent, the condensation situation at the condensation vent is checked every Δt time to see if it improves. If so, maintain the current airflow speed; If not, the air outlet speed will be increased further, and after the air outlet speed reaches the set upper limit speed, the dehumidification action will be performed.

3. The anti-condensation control method according to claim 2, characterized in that, If the indoor environment where the indoor unit is located is abnormal, the dew point temperature is adjusted according to the temperature and humidity parameters of the current indoor environment. During the cooling operation of the indoor unit, the outlet temperature of each air outlet is detected, and dehumidification is performed when at least one of the outlet temperatures drops to the dew point temperature.

4. The anti-condensation control method according to claim 2, characterized in that, After performing the dehumidification action at least once, the system checks whether the condensation at the condensation vent has improved. If not, a high humidity alert signal is sent to the user.

5. The anti-condensation control method according to claim 2, characterized in that, The dehumidification action involves reducing the outlet air velocity and increasing the compressor operating frequency.

6. The anti-condensation control method according to claim 1, characterized in that, The adjustment actions based on the actual number of air outlets with condensate also include: After adjusting the sweeping angle of the condensation air outlet, the condensation situation of the condensation air outlet is checked every Δt time to see if it has improved. If so, maintain the current sweep angle; If not, continue to adjust the sweep angle of the condensation vent.

7. The anti-condensation control method according to claim 6, characterized in that, Record the normal sweeping area where condensation improves and the abnormal sweeping area where condensation worsens. If the air outlet of the condensation vent is again found to be blocked, avoid or quickly sweep through the abnormal sweeping area and slowly sweep through the normal sweeping area.

8. The anti-condensation control method according to claim 1, characterized in that, Each of the air outlets is equipped with a photosensitive sensor on its sweeping blades. The photosensitive sensor's detection value is used to determine whether condensation exists and / or whether the condensation situation has improved.

9. The anti-condensation control method according to claim 8, characterized in that, Determining the presence of condensation based on the detection value of the photosensitive sensor includes: When the indoor unit is in cooling mode, the initial detection value of the photosensitive sensor is recorded. After entering the anti-condensation mode, the increase between the actual detection value of the photosensitive sensor and its corresponding initial detection value is calculated. If the increase exceeds a set threshold, it is determined that there is condensation at the air outlet where the photosensitive sensor is located.

10. The anti-condensation control method according to claim 8, characterized in that, Determining whether the condensation situation has improved based on the detection value of the photosensitive sensor includes: comparing the actual detection values ​​of the photosensitive sensor before and after two tests; if the decrease in the actual detection value exceeds a set fluctuation amount, then the condensation situation is determined to have improved.

11. The anti-condensation control method according to claim 10, characterized in that, The set fluctuation amount is adjusted according to the length of the detection interval Δt between two consecutive detections by the photosensitive sensor; the longer Δt is, the greater the set fluctuation amount is.

12. The anti-condensation control method according to claim 1, characterized in that, The airflow speed at each air outlet of the indoor unit is adjusted synchronously, and the sweeping angle at each air outlet of the indoor unit is adjusted independently.

13. The anti-condensation control method according to any one of claims 1 to 12, characterized in that, The air conditioning unit containing the indoor unit is equipped with an anti-condensation mode, which the user can manually activate by turning on the air conditioning unit.

14. Air conditioning units, including: An outdoor unit, an indoor unit, and a controller, wherein the indoor unit has at least one air outlet, and the controller performs the anti-condensation control method according to any one of claims 1 to 13.

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