Anti-condensation control method and device, and air conditioner

Abstract

This invention provides an anti-condensation control method, device, and air conditioner, comprising: when a first duration is greater than a first preset duration, entering anti-condensation logic to obtain the indoor temperature; when the difference between the indoor temperature and the preset temperature is less than or equal to the preset difference, entering coil control logic to retrieve the historical coil temperature; adjusting the compressor output frequency according to a frequency compensation value to slow down the rate of coil temperature decrease; the first duration is the duration during which the first indoor humidity is greater than the first preset humidity; the frequency compensation value is determined based on the historical coil temperature change. This invention uses indoor humidity as the criterion, calculates the frequency compensation value based on the coil temperature change, and adjusts the air conditioner compressor frequency according to the frequency compensation value, thereby reducing the rate of temperature decrease of the air conditioner coil and slowing down the temperature decrease at the air conditioner guide plate, thus reducing the formation of condensation at the air conditioner guide plate and improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of air conditioning, and more particularly to an anti-condensation control method, device, and air conditioner. Background Technology

[0002] Generally speaking, after setting the desired indoor temperature, the air conditioner will drive the compressor to run at a preset frequency to quickly reduce the indoor temperature. During the process of reducing the indoor temperature, since the compressor frequency remains constant, the temperature of the air conditioner coil drops significantly, which increases the likelihood of condensation forming at the air outlet of the air conditioner guide plate, affecting the user experience.

[0003] Especially in environments with high indoor humidity, a sudden drop in temperature at the air conditioner guide plate is more likely to lead to the formation of a large amount of condensation. How to achieve a slow drop in temperature at the air conditioner guide plate to reduce condensation formation has become a technical problem that urgently needs to be solved. Summary of the Invention

[0004] This invention provides an anti-condensation control method, device, and air conditioner to solve the problem that the prior art cannot adjust the compressor's operating frequency in advance based on the decreasing trend of the coil temperature when the indoor temperature is about to reach the preset temperature, so as to reduce the decreasing trend of the coil temperature and slow down the temperature drop rate at the air conditioner guide plate, thereby minimizing the formation of condensation at the air conditioner guide plate.

[0005] In a first aspect, the present invention provides a method for preventing condensation control, comprising:

[0006] If the first duration exceeds the first preset duration, the air conditioner is driven to enter the anti-condensation logic and the indoor temperature is obtained;

[0007] If the difference between the indoor temperature and the preset temperature is less than or equal to the preset difference, the air conditioner is driven to enter the coil control logic and retrieve the historical coil temperature.

[0008] Adjust the compressor's output frequency according to the frequency compensation value to slow down the rate at which the coil temperature drops;

[0009] The first duration is the duration during which the first indoor humidity is greater than the first preset humidity;

[0010] The frequency compensation value is determined based on the historical temperature changes of the coil.

[0011] According to the anti-condensation control method provided by the present invention, after retrieving the historical temperature of the coil and before adjusting the output frequency of the compressor according to the frequency compensation value, the method further includes:

[0012] The first proportional control quantity is determined based on the first target difference and the proportional coefficient;

[0013] The first integral control quantity is determined based on the first temperature deviation and the integral coefficient.

[0014] The first differential control quantity is determined based on the first target difference, the second target difference, and the differential coefficient;

[0015] The first frequency change value is determined based on the first proportional control quantity, the first integral control quantity, and the first derivative control quantity.

[0016] The second proportional control quantity is determined based on the difference between the second target and the proportional coefficient.

[0017] The second integral control quantity is determined based on the second temperature deviation and the integral coefficient.

[0018] The second differential control quantity is determined based on the difference between the second and third objectives and the differential coefficients.

[0019] The second frequency change value is determined based on the second proportional control quantity, the second integral control quantity, and the second derivative control quantity;

[0020] The frequency compensation value is determined based on the first frequency change value and the second frequency change value;

[0021] The first target difference is determined based on the first temperature deviation and the second temperature deviation.

[0022] The second target difference is determined based on the second temperature deviation and the third temperature deviation.

[0023] The third target difference is determined based on the third temperature deviation and the fourth temperature deviation.

[0024] The first temperature deviation is determined based on the temperature of the first coil and the temperature of the second coil;

[0025] The second temperature deviation is determined based on the temperature of the second coil and the temperature of the third coil;

[0026] The third temperature deviation is determined based on the third coil temperature and the fourth coil temperature.

[0027] The fourth temperature deviation is determined based on the fourth coil temperature and the fifth coil temperature.

[0028] According to the anti-condensation control method provided by the present invention, before determining the first proportional control quantity based on the first target difference and the proportional coefficient, the method further includes:

[0029] The temperatures of the first, second, third, fourth, and fifth coils are retrieved based on the historical coil temperatures.

[0030] The coil historical temperature is a plurality of coil temperatures obtained at intervals of a second preset time period;

[0031] The first coil temperature is the coil temperature obtained at the current moment;

[0032] The temperature of the second coil is obtained before the temperature of the first coil is obtained.

[0033] The temperature of the third coil is obtained before the temperature of the second coil is obtained.

[0034] The temperature of the fourth coil is obtained before the temperature of the third coil is obtained.

[0035] The temperature of the fifth coil is obtained before the temperature of the fourth coil is obtained.

[0036] According to an anti-condensation control method provided by the present invention, before driving the air conditioner into the anti-condensation logic when the first duration is longer than the first preset duration, the method further includes:

[0037] Determine the operating status of the air conditioner;

[0038] When the operating state is in cooling mode, the first indoor humidity is obtained.

[0039] According to an anti-condensation control method provided by the present invention, after the air conditioner is driven into the anti-condensation logic, the method further includes:

[0040] Obtain the second duration of the air conditioner's anti-condensation logic;

[0041] If the second duration exceeds the third preset duration, the air conditioner will exit the anti-condensation logic.

[0042] According to an anti-condensation control method provided by the present invention, after the air conditioner is driven into the anti-condensation logic, the method further includes:

[0043] Receive driver commands;

[0044] In response to the driving command, the air conditioner is driven to exit the anti-condensation logic;

[0045] The drive command is at least one of the following: shutdown command, heating command, ventilation command, and dehumidification command.

[0046] According to an anti-condensation control method provided by the present invention, after the air conditioner is driven into the anti-condensation logic, the method further includes:

[0047] Obtain the second indoor humidity;

[0048] If the third duration exceeds the fourth preset duration, the air conditioner will exit the anti-condensation logic.

[0049] The third duration is the duration during which the second indoor humidity is less than the second preset humidity.

[0050] According to an anti-condensation control method provided by the present invention, after the air conditioner is driven into the anti-condensation logic, the method further includes:

[0051] Adjust the included angle between each adjacent horizontal sway blade to be the same;

[0052] And / or, adjust the included angle between each adjacent vertical blade to be the same;

[0053] And / or, adjust the air conditioner fan speed to the preset speed.

[0054] According to the anti-condensation control method provided by the present invention, adjusting the output frequency of the compressor according to the frequency compensation value includes:

[0055] Determine the compressor's output frequency at the current moment;

[0056] The compressor's output frequency at the next moment is determined based on the compressor's output frequency and the frequency compensation value.

[0057] The air conditioner operation is adjusted according to the compressor's output frequency at the next moment.

[0058] Secondly, an air conditioner is also provided, including: an air conditioner body, wherein the air conditioner body is provided with a processor, an indoor temperature sensor, an indoor humidity sensor and a coil temperature sensor;

[0059] The indoor temperature sensor is used to acquire the indoor temperature.

[0060] The indoor humidity sensor is used to acquire indoor humidity;

[0061] The coil temperature sensor is used to obtain the coil temperature;

[0062] It also includes a memory and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, perform the following steps:

[0063] If the first duration exceeds the first preset duration, the air conditioner is driven to enter the anti-condensation logic and the indoor temperature is obtained;

[0064] If the difference between the indoor temperature and the preset temperature is less than or equal to the preset difference, the air conditioner is driven to enter the coil control logic and retrieve the historical coil temperature.

[0065] Adjust the compressor's output frequency according to the frequency compensation value to slow down the rate at which the coil temperature decreases;

[0066] The first duration is the duration during which the first indoor humidity is greater than the first preset humidity;

[0067] The frequency compensation value is determined based on the historical temperature changes of the coil.

[0068] Thirdly, an anti-condensation control device is also provided, comprising:

[0069] Acquisition unit: used to drive the air conditioner into anti-condensation logic and acquire the indoor temperature when the first duration is longer than the first preset duration;

[0070] Retrieval Unit: When the difference between the indoor temperature and the preset temperature is less than or equal to the preset difference, drive the air conditioner to enter the coil control logic and retrieve the historical temperature of the coil.

[0071] Adjustment unit: Used to adjust the compressor's output frequency according to the frequency compensation value in order to slow down the rate at which the coil temperature drops;

[0072] The first duration is the duration during which the first indoor humidity is greater than the first preset humidity;

[0073] The frequency compensation value is determined based on the historical temperature changes of the coil.

[0074] This invention provides an anti-condensation control method, device, and air conditioner. First, it uses indoor humidity as a criterion. Then, when the indoor temperature approaches a preset temperature, it calculates the frequency compensation value for the compressor frequency based on the temperature change of the coil at different times. The compressor frequency is then adjusted according to this compensation value to reduce the rate at which the air conditioner coil temperature decreases, thereby slowing down the temperature drop at the air conditioner guide plate and minimizing condensation formation at the guide plate, thus improving the user experience. Attached Figure Description

[0075] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0076] Figure 1 This is one of the flowcharts of an anti-condensation control method provided by the present invention;

[0077] Figure 2This is the second schematic diagram of a method for preventing condensation control provided by the present invention;

[0078] Figure 3 This is the third flowchart of an anti-condensation control method provided by the present invention;

[0079] Figure 4 This is the fourth flowchart of an anti-condensation control method provided by the present invention;

[0080] Figure 5 This is the fifth flowchart of an anti-condensation control method provided by the present invention;

[0081] Figure 6 This is the sixth flowchart of an anti-condensation control method provided by the present invention;

[0082] Figure 7 This is a schematic diagram of the process for adjusting the output frequency of the compressor provided by the present invention;

[0083] Figure 8 This is a schematic diagram of the structure of an anti-condensation control device provided by the present invention. Detailed Implementation

[0084] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0085] It should be noted that in the description of the embodiments of the present invention, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The terms "upper," "lower," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0086] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, without limiting the number of objects; for example, a first object can be one or more. Furthermore, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects have an "or" relationship.

[0087] Figure 1 This is one of the flowcharts of an anti-condensation control method provided by the present invention. The present invention discloses an anti-condensation control method, comprising:

[0088] If the first duration exceeds the first preset duration, the air conditioner is driven to enter the anti-condensation logic and the indoor temperature is obtained;

[0089] If the difference between the indoor temperature and the preset temperature is less than or equal to the preset difference, the air conditioner is driven to enter the coil control logic and retrieve the historical coil temperature.

[0090] Adjust the compressor's output frequency according to the frequency compensation value to slow down the rate at which the coil temperature drops;

[0091] The first duration is the duration during which the first indoor humidity is greater than the first preset humidity;

[0092] The frequency compensation value is determined based on the historical temperature changes of the coil.

[0093] In step 101, the first preset duration can be 30 minutes, 60 minutes, or 90 minutes, etc., and the first preset humidity can be 70%, 75%, 80%, etc. That is, if the current indoor humidity is greater than 75% and this humidity state continues for more than 60 minutes, it is considered that the indoor environment where the air conditioner is located has a high humidity and is in a state where condensation is very likely to form. At this time, the air conditioner is driven to enter the anti-condensation logic. The anti-condensation logic includes the adjustment of the guide plate angle and the subsequent coil control logic. That is, entering the anti-condensation logic is a prerequisite for whether the coil control logic can be used subsequently. After the air conditioner is driven to enter the anti-condensation logic, the indoor temperature is obtained according to the indoor temperature sensor.

[0094] In step 102, when the difference between the indoor temperature and the preset temperature is less than or equal to the preset difference, the air conditioner is driven to enter the coil control logic and the historical temperature of the coil is retrieved. The preset difference can be 1℃, 2℃, or 3℃. The preset temperature is the desired indoor temperature set by the user input. That is, when the difference between the current indoor temperature and the preset temperature is less than or equal to 2℃, and the current indoor temperature is about to drop to the preset temperature but has not yet dropped to the preset temperature, the air conditioner is driven to enter the coil control logic. After the air conditioner enters the coil control logic, it does not mean that the frequency of the air conditioner compressor is adjusted immediately, but the historical temperature of the coil is retrieved first.

[0095] Those skilled in the art will understand that, before, during, or after entering the coil control logic, the present invention acquires and records the coil temperature at preset intervals to reflect changes in coil temperature, and uses all acquired historical coil temperatures as historical coil temperatures.

[0096] In step 103, the compressor output frequency is adjusted according to the frequency compensation value to slow down the rate of temperature decrease in the coil. The frequency compensation value is determined based on the historical temperature changes of the coil. Since changes in coil temperature at different times reflect changes in the air conditioner's compressor frequency, calculating these historical temperature changes reveals patterns of temperature increments or decrements at different stages. Based on the correlation between compressor frequency and coil temperature, the compensation value for the compressor frequency at the next moment, which is continuous with the current compressor frequency, is determined. Finally, the compressor output frequency is adjusted according to the frequency compensation value. The compressor's output frequency is adjusted to reduce the rate at which the coil temperature decreases. As the coil temperature decreases, the air used for cooling mode passes through the coil and is blown into the indoor environment from the air outlet guide plate. The air temperature at the air outlet guide plate will change as the coil temperature decreases. These changes include: the air temperature at the air outlet guide plate decreases more slowly, the air temperature at the air outlet guide plate approaches a constant value, and the air temperature at the air outlet guide plate increases. Regardless of the state, the possibility of condensation forming at the air outlet guide plate is reduced.

[0097] Optionally, after the air conditioner is driven into the anti-condensation logic, the following further steps are included:

[0098] Adjust the included angle between each adjacent horizontal sway blade to be the same;

[0099] And / or, adjust the included angle between each adjacent vertical blade to be the same;

[0100] And / or, adjust the air conditioner fan speed to the preset speed.

[0101] After the air conditioner enters the anti-condensation logic, it can not only determine whether it has entered the coil control logic, but also prevent condensation from forming by controlling the angle and orientation of the air conditioner blades, and also by controlling the air conditioner fan speed.

[0102] Specifically, if the air outlet corresponding to the air conditioner swivel blade is a fan-shaped surface, the angle of the air conditioner swivel blade is adjusted so that the fan-shaped surface of the air outlet is evenly divided by each swivel blade, so that the included angle between any adjacent swivel blades is the same; if the air outlet is a rectangular surface, the angle of the air conditioner swivel blade is adjusted, and optionally, the swivel blade is made parallel to the horizontal direction to achieve the maximum angle of air outlet.

[0103] If the air outlet corresponding to the vertical swivel blades of the air conditioner is a fan-shaped surface, then the angle of the vertical swivel blades of the air conditioner is adjusted so that the fan-shaped surface of the air outlet is evenly divided by each vertical swivel blade, so that the included angle between any adjacent horizontal swivel blades is the same; if the air outlet is a rectangular surface, then the angle of the vertical swivel blades of the air conditioner is adjusted, and optionally, the vertical swivel blades are made parallel to the vertical direction to achieve the maximum angle of air outlet.

[0104] Optionally, the present invention can also divide the air conditioner's fan speed settings into silent, low, medium, high, and powerful settings. If the initial air conditioner fan speed setting is silent, low, or medium, it can be adjusted to the high setting. If the initial air conditioner fan speed setting is high or powerful, the current setting can be maintained.

[0105] This invention provides an anti-condensation control method, device, and air conditioner. First, it uses the indoor humidity environment as a judgment criterion. Then, when the indoor temperature approaches a preset temperature, it calculates the frequency compensation value for the air conditioner's compressor frequency based on the temperature change of the coil at different times. The air conditioner compressor frequency is then adjusted according to the frequency compensation value to reduce the rate at which the air conditioner coil temperature decreases, thereby slowing down the rate at which the temperature at the air conditioner guide plate decreases, and minimizing the formation of condensation at the air conditioner guide plate.

[0106] Figure 2 This is a second schematic flowchart of an anti-condensation control method provided by the present invention. After retrieving the historical temperature of the coil and before adjusting the output frequency of the compressor according to the frequency compensation value, the method further includes:

[0107] The first proportional control quantity is determined based on the first target difference and the proportional coefficient;

[0108] The first integral control quantity is determined based on the first temperature deviation and the integral coefficient.

[0109] The first differential control quantity is determined based on the first target difference, the second target difference, and the differential coefficient;

[0110] The first frequency change value is determined based on the first proportional control quantity, the first integral control quantity, and the first derivative control quantity.

[0111] The second proportional control quantity is determined based on the difference between the second target and the proportional coefficient.

[0112] The second integral control quantity is determined based on the second temperature deviation and the integral coefficient.

[0113] The second differential control quantity is determined based on the difference between the second and third objectives and the differential coefficients.

[0114] The second frequency change value is determined based on the second proportional control quantity, the second integral control quantity, and the second derivative control quantity;

[0115] The frequency compensation value is determined based on the first frequency change value and the second frequency change value;

[0116] The first target difference is determined based on the first temperature deviation and the second temperature deviation.

[0117] The second target difference is determined based on the second temperature deviation and the third temperature deviation.

[0118] The third target difference is determined based on the third temperature deviation and the fourth temperature deviation.

[0119] The first temperature deviation is determined based on the temperature of the first coil and the temperature of the second coil;

[0120] The second temperature deviation is determined based on the temperature of the second coil and the temperature of the third coil;

[0121] The third temperature deviation is determined based on the third coil temperature and the fourth coil temperature.

[0122] The fourth temperature deviation is determined based on the fourth coil temperature and the fifth coil temperature.

[0123] In step 201, the first target difference is determined based on a first temperature deviation and a second temperature deviation. The first temperature deviation is determined based on the first coil temperature and the second coil temperature, and the second temperature deviation is determined based on the second coil temperature and the third coil temperature. In one optional embodiment, the first temperature deviation is determined based on the difference between the first coil temperature and the second coil temperature. In another optional embodiment, if the temperature deviation is too small to be easily calculated during actual operation, it can be magnified before calculation. For example, the difference between the first coil temperature and the second coil temperature can be multiplied by a factor of 2 to obtain the first temperature deviation. In other embodiments, the magnification factor can be 3, 4, or even more. Correspondingly, if the method of obtaining the temperature deviation by magnification factor is selected, all temperature deviations must be obtained in this way, such as the second temperature deviation, the third temperature deviation, the fourth temperature deviation, etc., which will not be elaborated here.

[0124] The temperatures of the first, second, and third coils are all retrieved from the historical coil temperatures, and these temperatures are acquired in a specific order. The proportional coefficient is a constant; optionally, the first proportional control value is determined by multiplying the first target difference by the proportional coefficient.

[0125] In step 202, a first integral control quantity is determined based on the first temperature deviation and the integral coefficient, wherein the integral coefficient is a constant, and the first integral control quantity is determined based on the product of the first temperature deviation and the integral coefficient.

[0126] In step 203, a first differential control quantity is determined based on a first target difference, a second target difference, and a differential coefficient. The second target difference is determined based on a second temperature deviation and a third temperature deviation. The second temperature deviation is determined based on a second coil temperature and a third coil temperature. The third temperature deviation is determined based on a third coil temperature and a fourth coil temperature. The differential coefficient is a constant. Optionally, the difference between the first target difference and the second target difference is first determined, and then the first differential control quantity is determined based on the product of the difference and the differential coefficient.

[0127] In step 204, a first frequency change value is determined based on the first proportional control value, the first integral control value, and the first derivative control value. Optionally, the sum of the first proportional control value, the first integral control value, and the first derivative control value is determined as the first frequency change value.

[0128] In step 205, a second proportional control quantity is determined based on the second target difference and the proportional coefficient. Optionally, the second proportional control quantity is determined based on the product of the second target difference and the proportional coefficient.

[0129] In step 206, the second integral control quantity is determined based on the second temperature deviation and the integral coefficient. Optionally, the second integral control quantity is determined based on the product of the second temperature deviation and the integral coefficient.

[0130] In step 207, a second differential control quantity is determined based on a second target difference, a third target difference, and a differential coefficient. The third target difference is determined based on a third temperature deviation and a fourth temperature deviation. The third temperature deviation is determined based on a third coil temperature and a fourth coil temperature. The fourth temperature deviation is determined based on a fourth coil temperature and a fifth coil temperature. Optionally, the difference between the second and third target differences is first determined, and then the second differential control quantity is determined based on the product of the difference and the differential coefficient.

[0131] In step 208, a second frequency change value is determined based on the second proportional control value, the second integral control value, and the second derivative control value. Optionally, the second frequency change value is determined by the sum of the second proportional control value, the second integral control value, and the second derivative control value.

[0132] In step 209, a frequency compensation value is determined based on the first frequency change value and the second frequency change value. The frequency compensation value can be determined by the following formula:

[0133]

[0134] In equation (1), P is the frequency compensation value, F1 is the first frequency change value, and F2 is the second frequency change value.

[0135] Optionally, before determining the first proportional control quantity based on the first target difference and the proportional coefficient, the method further includes:

[0136] The temperatures of the first, second, third, fourth, and fifth coils are retrieved based on the historical coil temperatures.

[0137] The coil historical temperature is a plurality of coil temperatures obtained at intervals of a second preset time period;

[0138] The first coil temperature is the coil temperature obtained at the current moment;

[0139] The temperature of the second coil is obtained before the temperature of the first coil is obtained.

[0140] The temperature of the third coil is obtained before the temperature of the second coil is obtained.

[0141] The temperature of the fourth coil is obtained before the temperature of the third coil is obtained.

[0142] The temperature of the fifth coil is obtained before the temperature of the fourth coil is obtained.

[0143] Those skilled in the art will understand that the first, second, third, fourth, and fifth coil temperatures are retrieved based on the historical coil temperatures. The historical coil temperatures do not only include the temperatures at the five times mentioned above, but can also include the coil temperature at any time during the entire operation of the air conditioner. The present invention aims to obtain the theoretically five temperatures that should be obtained in order to obtain the frequency compensation value at the current time. When calculating the frequency compensation value at the previous time and the frequency compensation value at the next time, the corresponding five coil temperatures can be selected.

[0144] The historical coil temperatures are multiple coil temperatures acquired at second preset time intervals. The second preset time interval can be 30 seconds, 60 seconds, 90 seconds, etc. Starting from the first coil temperature acquired at the current time, the temperature is acquired by iterating back to the previous time, and then the second, third, fourth, and fifth coil temperatures are acquired sequentially. In an optional embodiment, if the first coil temperature is acquired at 8:42 and the second preset time interval is 60 seconds, then the second coil temperature is acquired at 8:41, the third coil temperature at 8:40, the fourth coil temperature at 8:39, and the fifth coil temperature at 8:38.

[0145] Figure 3 This is a flowchart of the third method for preventing condensation control provided by the present invention. Before driving the air conditioner into the anti-condensation logic when the first duration is longer than the first preset duration, the method further includes:

[0146] Determine the operating status of the air conditioner;

[0147] When the operating state is in cooling mode, the first indoor humidity is obtained.

[0148] In step 301, the operating state of the air conditioner can be cooling mode, heating mode, dehumidification mode, humidification mode, ventilation mode, etc. The present invention first determines the operating state of the air conditioner.

[0149] In step 302, the present invention aims to solve the problem of condensation formation in locations such as air conditioning coils and air conditioning guide plates that are prone to condensation in the cooling mode. Therefore, the current indoor humidity will only be acquired in the cooling mode, and then the indoor humidity will be judged to determine whether the triggering conditions for entering the air conditioning anti-condensation logic can be met.

[0150] Figure 4 This is a fourth flowchart illustrating an anti-condensation control method provided by the present invention. After the air conditioner is driven into the anti-condensation logic, the method further includes:

[0151] Obtain the second duration of the air conditioner's anti-condensation logic;

[0152] If the second duration exceeds the third preset duration, the air conditioner will exit the anti-condensation logic.

[0153] In step 401, after the air conditioner enters the anti-condensation logic, it starts timing and obtains the second duration of the air conditioner's anti-condensation logic operation. The second duration is the duration of the air conditioner's anti-condensation logic operation.

[0154] In step 402, the third preset duration can be 0.5 hours, 1 hour, or 2 hours. The purpose of setting the preset duration to drive the air conditioner to exit the anti-condensation logic is to save energy. Since the anti-condensation logic uses multiple control methods and multiple sensors to detect condensation, it will increase the energy consumption of the air conditioner during operation. In order to eliminate the monitoring of anti-condensation during the entire process of the air conditioner being turned on, the present invention adopts the technical solution of steps 401 to 402 to realize the cycle of driving the air conditioner to enter the anti-condensation logic, driving the air conditioner to exit the anti-condensation logic, driving the air conditioner to enter the anti-condensation logic again, and driving the air conditioner to exit the anti-condensation logic again.

[0155] Figure 5 This is the fifth flowchart of an anti-condensation control method provided by the present invention. After the air conditioner is driven into the anti-condensation logic, the method further includes:

[0156] Receive driver commands;

[0157] In response to the driving command, the air conditioner is driven to exit the anti-condensation logic;

[0158] The drive command is at least one of the following: shutdown command, heating command, ventilation command, and dehumidification command.

[0159] In step 501, the driving command can be a shutdown command, a heating command, a ventilation command, or a dehumidification command. Those skilled in the art will understand that any non-cooling mode can be understood as the air conditioner operating mode indicated by the driving command.

[0160] In step 502, in response to the driving command, the air conditioner is driven to exit the anti-condensation logic. The present invention provides a solution for exiting the anti-condensation logic, that is, as long as the cooling mode is not used, condensation will no longer form at the air conditioning coil and air conditioning guide plate, and thus there is no need to run the anti-condensation logic again.

[0161] Figure 6 This is a schematic diagram of the sixth step in the process of providing an anti-condensation control method according to the present invention. After the air conditioner is driven into the anti-condensation logic, the method further includes:

[0162] Obtain the second indoor humidity;

[0163] If the third duration exceeds the fourth preset duration, the air conditioner will exit the anti-condensation logic.

[0164] The third duration is the duration during which the second indoor humidity is less than the second preset humidity.

[0165] In step 601, after the air conditioner is driven into the anti-condensation logic, the technical solution provided by the present invention can effectively prevent condensation in the air conditioning coil, air conditioning guide plate and other locations. However, the conditions for condensation formation are related not only to the temperature of the air outlet but also to the indoor humidity. If the indoor humidity decreases, condensation is not easy to form. Therefore, in this step, it is optional to continuously obtain the indoor humidity at this time, that is, obtain the second indoor humidity.

[0166] In step 602, if the third duration is longer than the fourth preset duration, the air conditioner is driven to exit the anti-condensation logic. The third duration is the duration during which the second indoor humidity is less than the second preset humidity. The fourth preset duration can be 15 minutes, 30 minutes, or 45 minutes. The second preset humidity can be 60%, 65%, or 70%. In an optional embodiment, if the duration of the second indoor humidity being less than 65% is longer than 30 minutes, it is considered that the indoor humidity is relatively stable and the indoor humidity is low. At this time, the air conditioner can be driven to exit the anti-condensation logic.

[0167] Figure 7 This is a schematic flowchart of adjusting the output frequency of a compressor provided by the present invention. The step of adjusting the output frequency of the compressor according to the frequency compensation value includes:

[0168] Determine the compressor's output frequency at the current moment;

[0169] The compressor's output frequency at the next moment is determined based on the compressor's output frequency and the frequency compensation value.

[0170] The air conditioner operation is adjusted according to the compressor's output frequency at the next moment.

[0171] In step 701, the compressor output frequency at the current moment is the time when the first coil temperature is obtained, and the air conditioner compressor frequency corresponding to the time when the first coil temperature is obtained is the compressor output frequency at the current moment.

[0172] In step 702, the output frequency of the compressor at the next moment is determined based on the output frequency of the compressor and the frequency compensation value. Alternatively, the output frequency of the compressor at the next moment can be determined based on the sum of the output frequency of the compressor and the frequency compensation value, or based on the difference between the output frequency of the compressor and the frequency compensation value.

[0173] In step 703, the air conditioner operation is adjusted according to the compressor output frequency at the next moment. If the compressor output frequency at the next moment is less than the compressor output frequency, the rate at which the air conditioner coil temperature drops will decrease, thereby slowing down the rate at which the temperature at the air conditioner guide plate will drop, so as to minimize the formation of condensation at the air conditioner guide plate.

[0174] Figure 8 This is a schematic diagram of the structure of an anti-condensation control device provided by the present invention. The present invention discloses an anti-condensation control device, including an acquisition unit 1: used to drive the air conditioner into the anti-condensation logic and acquire the indoor temperature when the first duration is longer than the first preset duration. The working principle of the acquisition unit 1 can be referred to the aforementioned step 101, and will not be repeated here.

[0175] The anti-condensation control device also includes a retrieval unit 2: when the difference between the indoor temperature and the preset temperature is less than or equal to the preset difference, the air conditioner is driven to enter the coil control logic and retrieve the historical temperature of the coil. The working principle of the retrieval unit 2 can be referred to the aforementioned step 102, and will not be repeated here.

[0176] The anti-condensation control device also includes an adjustment unit 3: used to adjust the output frequency of the compressor according to the frequency compensation value in order to slow down the rate of temperature drop of the coil. The working principle of the adjustment unit 3 can be referred to the aforementioned step 103, and will not be repeated here.

[0177] The first duration is the duration during which the first indoor humidity is greater than the first preset humidity;

[0178] The frequency compensation value is determined based on the historical temperature changes of the coil.

[0179] This invention provides an anti-condensation control method, device, and air conditioner. First, it uses the indoor humidity environment as a judgment criterion. Then, when the indoor temperature approaches a preset temperature, it calculates the frequency compensation value for the air conditioner's compressor frequency based on the temperature change of the coil at different times. The air conditioner compressor frequency is then adjusted according to the frequency compensation value to reduce the rate at which the air conditioner coil temperature decreases, thereby slowing down the rate at which the temperature at the air conditioner guide plate decreases, and minimizing the formation of condensation at the air conditioner guide plate.

[0180] On the other hand, the present invention also provides an air conditioner, comprising: an air conditioner body, wherein the air conditioner body is provided with a processor, an indoor temperature sensor, an indoor humidity sensor and a coil temperature sensor;

[0181] The indoor temperature sensor is used to acquire the indoor temperature.

[0182] The indoor humidity sensor is used to acquire indoor humidity;

[0183] The coil temperature sensor is used to obtain the coil temperature;

[0184] It also includes a memory and a program or instructions stored in the memory and executable on the processor. When the program or instructions are executed by the processor, the anti-condensation control method is performed. The method includes: when the first duration is greater than the first preset duration, driving the air conditioner into anti-condensation logic and acquiring the indoor temperature; when the difference between the indoor temperature and the preset temperature is less than or equal to the preset difference, driving the air conditioner into coil control logic and retrieving the historical temperature of the coil; adjusting the output frequency of the compressor according to a frequency compensation value to slow down the rate of decrease of the coil temperature; the first duration is the duration during which the first indoor humidity is greater than the first preset humidity; the frequency compensation value is determined based on the change of the historical temperature of the coil.

[0185] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A condensation-preventing control method characterized by, include: If the first duration exceeds the first preset duration, the air conditioner is driven into the anti-condensation logic and the indoor temperature is obtained; If the difference between the indoor temperature and the preset temperature is less than or equal to the preset difference, the air conditioner is driven to enter the coil control logic and retrieve the historical coil temperature. Adjust the compressor's output frequency according to the frequency compensation value to slow down the rate at which the coil temperature drops; The first duration is the duration during which the first indoor humidity is greater than the first preset humidity; The frequency compensation value is determined based on the historical temperature variation of the coil; After retrieving the historical temperature of the coil and before adjusting the compressor's output frequency based on the frequency compensation value, the following steps are also included: The first proportional control quantity is determined based on the first target difference and the proportional coefficient; The first integral control quantity is determined based on the first temperature deviation and the integral coefficient. The first differential control quantity is determined based on the first target difference, the second target difference, and the differential coefficient; The first frequency change value is determined based on the first proportional control quantity, the first integral control quantity, and the first derivative control quantity. The second proportional control quantity is determined based on the difference between the second target and the proportional coefficient. The second integral control quantity is determined based on the second temperature deviation and the integral coefficient. The second differential control quantity is determined based on the difference between the second and third objectives and the differential coefficients. The second frequency change value is determined based on the second proportional control quantity, the second integral control quantity, and the second derivative control quantity; The frequency compensation value is determined based on the first frequency change value and the second frequency change value; The first target difference is determined based on the first temperature deviation and the second temperature deviation. The second target difference is determined based on the second temperature deviation and the third temperature deviation. The third target difference is determined based on the third temperature deviation and the fourth temperature deviation. The first temperature deviation is determined based on the temperature of the first coil and the temperature of the second coil; The second temperature deviation is determined based on the temperature of the second coil and the temperature of the third coil; The third temperature deviation is determined based on the third coil temperature and the fourth coil temperature. The fourth temperature deviation is determined based on the fourth coil temperature and the fifth coil temperature; After the air conditioner enters the anti-condensation logic, the following is also included: Adjust the included angle between each adjacent horizontal sway blade to be the same; And / or, adjust the included angle between each adjacent vertical blade to be the same; And / or, adjust the air conditioner fan speed to the preset speed.

2. The anti-condensation control method according to claim 1, characterized by, Before determining the first proportional control quantity based on the first target difference and the proportional coefficient, the following steps are also included: The temperatures of the first, second, third, fourth, and fifth coils are retrieved based on the historical coil temperatures. The coil historical temperature is a plurality of coil temperatures obtained at intervals of a second preset time period; The first coil temperature is the coil temperature obtained at the current moment; The temperature of the second coil is obtained before the temperature of the first coil is obtained. The temperature of the third coil is obtained before the temperature of the second coil is obtained. The temperature of the fourth coil is obtained before the temperature of the third coil is obtained. The temperature of the fifth coil is obtained before the temperature of the fourth coil is obtained.

3. The anti-condensation control method according to claim 1, characterized by, Before driving the air conditioner into the anti-condensation logic when the first duration exceeds the first preset duration, the following steps are also included: Determine the operating status of the air conditioner; When the operating state is in cooling mode, the first indoor humidity is obtained.

4. The anti-condensation control method according to claim 1, characterized by, After the air conditioner enters the anti-condensation logic, the following is also included: Obtain the second duration of the air conditioner's anti-condensation logic; If the second duration exceeds the third preset duration, the air conditioner will exit the anti-condensation logic.

5. The anti-condensation control method according to claim 1, characterized by, After the air conditioner enters the anti-condensation logic, the following is also included: Receive driver commands; In response to the driving command, the air conditioner is driven to exit the anti-condensation logic; The drive command is at least one of the following: shutdown command, heating command, ventilation command, and dehumidification command.

6. The anti-condensation control method according to claim 1, characterized by, After the air conditioner enters the anti-condensation logic, the following is also included: Obtain the second indoor humidity; If the third duration exceeds the fourth preset duration, the air conditioner will exit the anti-condensation logic. The third duration is the duration during which the second indoor humidity is less than the second preset humidity.

7. The anti-condensation control method according to claim 1, characterized by, The step of adjusting the compressor's output frequency based on the frequency compensation value includes: Determine the compressor's output frequency at the current moment; The compressor's output frequency at the next moment is determined based on the compressor's output frequency and the frequency compensation value. The air conditioner operation is adjusted according to the compressor's output frequency at the next moment.

8. An air conditioner comprising: An air conditioner body, characterized in that the air conditioner body is provided with a processor, an indoor temperature sensor, an indoor humidity sensor and a coil temperature sensor; The indoor temperature sensor is used to acquire the indoor temperature. The indoor humidity sensor is used to acquire indoor humidity; The coil temperature sensor is used to obtain the coil temperature; It also includes a memory and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, perform the anti-condensation control method as described in any one of claims 1 to 7.

9. A condensation-preventing control device characterized by comprising: The method for preventing condensation control as described in any one of claims 1 to 7 includes: Acquisition unit: used to drive the air conditioner into anti-condensation logic and acquire the indoor temperature when the first duration is longer than the first preset duration; Retrieval Unit: When the difference between the indoor temperature and the preset temperature is less than or equal to the preset difference, drive the air conditioner to enter the coil control logic and retrieve the historical temperature of the coil. Adjustment unit: Used to adjust the compressor's output frequency according to the frequency compensation value in order to slow down the rate at which the coil temperature drops; The first duration is the duration during which the first indoor humidity is greater than the first preset humidity; The frequency compensation value is determined based on the historical temperature changes of the coil.

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