Dehumidification control method and apparatus for air conditioners, air conditioners, storage media

Abstract

This application relates to the field of air conditioner technology and discloses a dehumidification control method for an air conditioner. The refrigerant flowing through the main refrigerant path is diverted before flowing into the indoor heat exchange coil. The method includes: acquiring the temperature values ​​of the main refrigerant path and the indoor heat exchange coil when the air conditioner is operating in dehumidification mode; obtaining the target frequency of the compressor based on the matching of the respective temperature values ​​of the main refrigerant path and the indoor heat exchange coil with the target temperature value; and controlling the compressor to operate at the target frequency so that the refrigerant exchanges heat with the air before diversion to achieve condensation and dehumidification. This method can improve the accuracy of compressor frequency control and enhance the precision of indoor temperature and humidity control when the air conditioning system is in a medium-temperature, high-humidity condition. This application also discloses a dehumidification control device for an air conditioner, an air conditioner, and a storage medium.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, such as a dehumidification control method and device for an air conditioner, an air conditioner, and a storage medium. Background Technology

[0002] Currently, with the rapid development of science and technology and the improvement of people's living standards, users' demands for indoor environmental comfort are increasing. In some southern cities of my country, humidity is high during late spring and early summer. At this time, users have high requirements for indoor humidity control. Therefore, how to meet users' indoor humidity needs during late spring and early summer has become an urgent technical problem to be solved.

[0003] The related technology discloses a control method for an air conditioning system. The control system includes a throttling valve, a third heat exchanger, and a compressor connected in series to form a refrigerant flow path; a first refrigerant branch connected to the main refrigerant flow path to form a closed-loop return flow; a second refrigerant branch connected to the main refrigerant flow path to form a closed-loop circuit; and a control module. The first refrigerant branch is used for cooling, and the second refrigerant branch is used for dehumidification. The control method includes: controlling the refrigerant flow rate of the first and second refrigerant branches to achieve dehumidification under different loads; determining whether the indoor temperature has reached a set value; if so, adjusting the refrigerant flow rate ratio in the first and second refrigerant branches; otherwise, maintaining the refrigerant flow rate ratio of the first and second refrigerant branches unchanged. The first refrigerant branch includes a first indoor heat exchanger. The second refrigerant branch includes a second indoor heat exchanger. The first indoor heat exchanger is equipped with a first temperature sensor, and the second indoor heat exchanger is equipped with a second temperature sensor. The indoor temperature is generated by detecting either the first or second temperature sensor.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] In related technologies, temperature sensors are usually installed in the middle of the indoor heat exchanger corresponding to the refrigerant branch after the refrigerant is split. Therefore, when the air conditioning system is in a medium temperature and high humidity condition, the indoor temperature value only reflects the temperature of the refrigerant branch after the refrigerant is split, and cannot reflect the coil temperature of the main refrigerant flow path, which affects the accuracy of compressor frequency control and reduces the accuracy of indoor temperature and humidity control.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a dehumidification control method, apparatus, air conditioner, and storage medium for an air conditioner, to improve the accuracy of compressor frequency regulation and enhance the precision of indoor temperature and humidity control when the air conditioning system is in a medium-temperature and high-humidity operating condition.

[0009] In some embodiments, the refrigerant flowing through the main refrigerant flow path is diverted and then flows into the indoor heat exchange coil. The method includes: when the air conditioner is operating in dehumidification mode, obtaining the temperature value of the main refrigerant flow path and the temperature value of the indoor heat exchange coil; obtaining the target frequency of the compressor based on the matching of the temperature values ​​of the main refrigerant flow path and the indoor heat exchange coil with the target temperature value; and controlling the compressor to operate at the target frequency so that the refrigerant exchanges heat with the air before being diverted to achieve condensation and dehumidification.

[0010] In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to execute, when running the program instructions, the dehumidification control method for an air conditioner as described above.

[0011] In some embodiments, the air conditioner includes: a main refrigerant flow path, configured with a first sensor for detecting the temperature value of the main refrigerant flow path; an indoor heat exchanger, configured with an indoor heat exchange coil and a second sensor for detecting the temperature value of the indoor heat exchange coil, wherein the refrigerant flowing through the main refrigerant flow path is diverted and then flows into the indoor heat exchange coil to achieve heat exchange; and a dehumidification control device for the air conditioner as described above is installed in the indoor heat exchanger.

[0012] In some embodiments, the storage medium stores program instructions that, when executed, perform the dehumidification control method for an air conditioner as described above.

[0013] The dehumidification control method, apparatus, air conditioner, and storage medium for air conditioners provided in this disclosure can achieve the following technical effects:

[0014] This embodiment of the invention uses a first sensor and a second sensor to obtain the temperatures of the main refrigerant flow path before it flows into the indoor heat exchanger and the temperatures of the indoor heat exchangers themselves, thereby improving the accuracy of temperature detection. Simultaneously, after the refrigerant is diverted through the main refrigerant flow path, it enters the flow paths of multiple indoor heat exchangers, resulting in uneven refrigerant distribution. If the compressor frequency is controlled solely based on the temperature value of the indoor heat exchange coil detected by the second sensor, the adjusted compressor frequency will be affected by this uneven distribution. This embodiment of the invention, by comprehensively considering the temperatures of the refrigerant before and after diversion, can minimize the impact of uneven distribution on the compressor frequency control, effectively improving the accuracy of frequency control during low-frequency compressor operation and enhancing the precision of indoor temperature and humidity control.

[0015] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0017] Figure 1 This is a schematic diagram of the structure of an air conditioner provided in an embodiment of this disclosure;

[0018] Figure 2 This is a schematic diagram of a dehumidification control method for an air conditioner provided in an embodiment of this disclosure;

[0019] Figure 3 This is a schematic diagram of another dehumidification control method for an air conditioner provided in an embodiment of this disclosure;

[0020] Figure 4 This is a schematic diagram of another dehumidification control method for an air conditioner provided in an embodiment of this disclosure;

[0021] Figure 5 This is a schematic diagram of another dehumidification control method for an air conditioner provided in an embodiment of this disclosure;

[0022] Figure 6 This is a schematic diagram of another dehumidification control method for an air conditioner provided in an embodiment of this disclosure;

[0023] Figure 7 This is a schematic diagram of another dehumidification control method for an air conditioner provided in an embodiment of this disclosure;

[0024] Figure 8 This is a schematic diagram of another dehumidification control method for an air conditioner provided in an embodiment of this disclosure;

[0025] Figure 9 This is an application illustration provided by an embodiment of the present disclosure;

[0026] Figure 10 This is a schematic diagram of a dehumidification control device for an air conditioner provided in an embodiment of this disclosure;

[0027] Figure 11 This is a schematic diagram of another dehumidification control device for an air conditioner provided in an embodiment of this disclosure;

[0028] Figure 12 This is a schematic diagram of an air conditioner provided in an embodiment of this disclosure.

[0029] Figure label:

[0030] 10: Main refrigerant flow path; 10a: First sensor;

[0031] 20: Indoor heat exchanger; 20a: Second sensor;

[0032] 30: First distributor;

[0033] 40: Second distributor;

[0034] 200 / 300: Dehumidification control device used in air conditioners;

[0035] 201: Temperature detection module; 202: Frequency acquisition module; 203: Execution module;

[0036] 400: Processor; 401: Memory; 402: Communication interface; 403: Bus;

[0037] 600: Air conditioner. Detailed Implementation

[0038] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0039] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0040] Unless otherwise stated, the term "multiple" means two or more.

[0041] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0042] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0043] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0044] Combination Figure 1 As shown, the air conditioner includes an indoor unit and an outdoor unit. The outdoor unit includes a compressor and a main refrigerant flow path 10. The main refrigerant flow path 10 is equipped with a first sensor 10a for detecting the temperature value of the main refrigerant flow path. The indoor unit includes multiple indoor heat exchangers 20. Each indoor heat exchanger 20 is equipped with an indoor heat exchange coil for detecting the temperature value of the indoor heat exchange coil. The refrigerant flowing through the main refrigerant flow path 10 is diverted and then flows into the indoor heat exchange coil. Both the first sensor 10a and the second sensor 20a are temperature sensors. The main refrigerant flow path 10 is diverted by a first distributor 30 and then flows into the indoor heat exchange coil. The refrigerant flowing through the indoor heat exchange coil undergoes heat exchange treatment and then is recombined by a second distributor 40 before flowing back into the main refrigerant flow path 10.

[0045] The air conditioner provided in this embodiment uses a first sensor to obtain the temperature value of the main refrigerant flow path, thus acquiring the temperature of the pipes before they flow into the indoor heat exchanger. Simultaneously, a second sensor obtains the temperature value of the indoor heat exchange coil, thus acquiring the temperature of the indoor heat exchanger itself. In this way, this embodiment can combine the temperature conditions before and after refrigerant diversion, improving the accuracy of temperature detection.

[0046] Optionally, the indoor unit also includes an auxiliary heating device (not shown in the attached diagram). The auxiliary heating device is installed at multiple indoor heat exchangers. The auxiliary heating device is used to heat some or all of the multiple indoor heat exchangers to assist the indoor heat exchangers in achieving weak cooling dehumidification.

[0047] Optionally, the auxiliary heating device is installed in the piping from the middle of the indoor heat exchange coil to the corresponding branch outlet. The indoor heat exchange coil includes a front section, a middle section, and a rear section. A branch inlet is located at the front section, and a branch outlet is located at the rear section. The refrigerant flows sequentially through the front, middle, and rear sections after entering through the branch inlet, and then exits through the branch outlet.

[0048] Based on the above air conditioner, combined with Figure 2 As shown, this disclosure provides a dehumidification control method for an air conditioner, including:

[0049] S01, when the air conditioner is running in dehumidification mode, the processor obtains the temperature value of the main refrigerant flow path and the temperature value of the indoor heat exchange coil.

[0050] In this step, the processor acquires the temperature values ​​of the main refrigerant flow path and the indoor heat exchange coil, and can periodically monitor the respective temperatures of the main refrigerant flow path and the indoor heat exchange coil. The monitoring period can be set according to actual needs. As an example, the monitoring period is [30, 90], in seconds.

[0051] S02, the processor obtains the target frequency of the compressor based on the matching of the temperature values ​​of the main refrigerant flow path and the indoor heat exchange coil with the target temperature value.

[0052] S03, the processor controls the compressor to operate at the target frequency so that the refrigerant exchanges heat with the air before being split to achieve condensation and dehumidification.

[0053] The dehumidification control method for air conditioners provided in this disclosure improves the accuracy of temperature detection by using a first sensor and a second sensor to obtain the temperature of the main refrigerant flow path before it flows into the indoor heat exchanger and the temperature of the indoor heat exchanger itself. However, after the refrigerant is diverted through the main refrigerant flow path, it enters the flow paths of multiple indoor heat exchangers, resulting in uneven refrigerant distribution. If the compressor frequency is controlled solely based on the temperature value of the indoor heat exchange coil detected by the second sensor, the adjusted compressor frequency will be affected by this uneven distribution. This disclosure, by comprehensively considering the temperature conditions of the refrigerant before and after diversion, minimizes the impact of uneven distribution on the compressor frequency control, effectively improving the accuracy of compressor frequency control during low-frequency operation and enhancing the precision of indoor temperature and humidity control.

[0054] Optionally, combined Figure 3 As shown, the processor obtains the compressor's target frequency based on the matching of the temperature values ​​of the main refrigerant flow path and the indoor heat exchange coil with the target temperature value, including:

[0055] S11, the processor determines the first frequency change based on the matching of the temperature value of the main refrigerant flow path with the first target temperature value.

[0056] S12, the processor determines the second frequency change based on the matching of the indoor heat exchange coil temperature value and the second target temperature value.

[0057] S13, the processor obtains the target frequency of the compressor based on the initial frequency, the first frequency change, and the second frequency change.

[0058] The first target temperature value is lower than the second target temperature value. The first target temperature value is much lower than the dew point temperature. The second target temperature value is slightly lower than the dew point temperature.

[0059] In this way, the air conditioner can meet the temperature and humidity control requirements through weak cooling and dehumidification under medium temperature and high humidity conditions. Weak cooling and dehumidification includes: slight cooling and dehumidification, slight heating and dehumidification, or constant temperature dehumidification. Since the refrigerant does not split when flowing through the main refrigerant flow path, by setting the first target temperature value corresponding to the main refrigerant flow path to a lower level, condensation and dehumidification can be achieved by exchanging heat with the air before splitting. In addition, the temperature of the refrigerant increases after flowing through the main refrigerant flow path, and there is no repeated condensation and dehumidification after it splits into the indoor heat exchanger. Therefore, the second target temperature value corresponding to the indoor heat exchange coil can be set to a higher level, so that the air temperature is moderate after heat exchange in the indoor heat exchanger. Thus, in this embodiment of the present disclosure, the target frequency of the compressor is determined based on the first frequency change corresponding to the main refrigerant flow path, the second frequency change corresponding to the indoor heat exchange coil, and the initial frequency. In this way, condensation and dehumidification before refrigerant splitting can be achieved. At the same time, it effectively improves the accuracy of frequency regulation of the compressor when it is running at low frequency, and improves the precision of indoor temperature and humidity regulation.

[0060] Optionally, combined Figure 4 As shown, the processor obtains the compressor's target frequency based on the initial frequency, the first frequency change, and the second frequency change, including:

[0061] S21, the processor adds the initial frequency to the first frequency change to obtain the first frequency.

[0062] S22, the processor adds the initial frequency to the change in the second frequency to obtain the second frequency.

[0063] S23, the processor selects the minimum value between the first frequency and the second frequency as the target frequency of the compressor.

[0064] In this embodiment, the initial frequency is superimposed with the first frequency change and the second frequency change to obtain the first and second frequencies, and then the minimum value of the two is selected as the target frequency of the compressor. When the air conditioner is operating under medium temperature and high humidity conditions, if the maximum value of the two is selected as the target frequency of the compressor, the compressor frequency will change too much, causing the indoor temperature to drop too quickly. Therefore, this embodiment can fine-tune the compressor frequency under medium temperature and high humidity conditions to achieve a weak cooling and dehumidification effect.

[0065] Optionally, the initial frequency can be set to a value in the range of [20, 50], in Hz (Hertz).

[0066] Optionally, the processor determines the first frequency change based on the matching between the temperature value of the main refrigerant flow path and the first target temperature value, including:

[0067] Processor in T d >T i目标 +ΔT s0 In this case, the first frequency change is determined to be ΔF1.

[0068] Processor in T i目标 -ΔT s ≤T≤T i目标 +ΔT s0 In this case, the change in the first frequency is determined to be 0.

[0069] Processor in T d <T i目标 -ΔT s0 In this case, the change in the first frequency is determined to be ΔF2.

[0070] Among them, T d T represents the temperature value of the main refrigerant flow path. i目标 The first target temperature value is represented by ΔT. s0 This represents the first deviation threshold, where ΔF1 > 0 and ΔF2 < 0. As an example, 0.5℃ < ΔT s0 <2℃. Preferably, ΔT s0 =1℃.

[0071] Thus, in T d >T i目标 +ΔT s0 When this occurs, it indicates that the temperature in the main refrigerant flow path is higher than the first target temperature. At this point, a frequency change greater than zero needs to be set to achieve a slight cooling effect by increasing the compressor frequency. At T... i目标 -ΔT s ≤T d ≤T i目标 +ΔT s0At this time, it indicates that the temperature value of the main refrigerant flow path is appropriate, and there is no need to adjust the compressor frequency. At T d <T i目标 -ΔT s0 When the temperature of the main refrigerant flow path is lower than the first target temperature, it indicates that the temperature is below the target temperature. In this case, a frequency change of less than zero needs to be set to reduce the compressor frequency and prevent a significant temperature drop. Thus, this embodiment of the present disclosure can set the frequency change based on the matching of different temperature ranges associated with the temperature of the main refrigerant flow path and the first target temperature, achieving precise adjustment of the compressor frequency corresponding to the main refrigerant flow path.

[0072] Optionally, 1Hz ≤ ΔF1 ≤ 3Hz, and 1Hz ≤ |ΔF2| ≤ 3Hz. This allows for small-scale adjustment of the compressor frequency, thus achieving small-scale temperature regulation.

[0073] In practical applications, ΔF1 can be equal to or unequal to |ΔF2|. This disclosure does not impose specific limitations on this.

[0074] Optionally, the processor determines the second frequency change based on the matching between the indoor heat exchange coil temperature and the second target temperature, including:

[0075] Processor in T p >T p目标 +ΔT s1 In this case, the change in the second frequency is determined to be ΔF1.

[0076] Processor in T p目标 -ΔT s ≤T p ≤T p目标 +ΔT s1 In this case, the change in the second frequency is determined to be 0.

[0077] Processor in T p <T p目标 -ΔT s1 In this case, the change in the second frequency is determined to be ΔF2.

[0078] Among them, T p This indicates the temperature value of the indoor heat exchange coil, T. p目标 The second target temperature value, ΔT s1 This represents the second deviation threshold, where ΔF1 > 0 and ΔF2 < 0. As an example, 0.5℃ < ΔT s1 <2℃. Preferably, ΔT s1 =1℃.

[0079] Thus, in T p >T p目标 +ΔT s1When this occurs, it indicates that the temperature of the indoor heat exchange coil is higher than the second target temperature. At this point, a frequency change greater than zero needs to be set to achieve a slight cooling effect by increasing the compressor frequency. At T... p目标 -ΔT s1 ≤T p ≤T p目标 +ΔT s At this time, it indicates that the temperature of the indoor heat exchange coil is appropriate, and there is no need to adjust the compressor frequency. At T... p <T p目标 -ΔT s1 When the indoor heat exchange coil temperature is below the second target temperature value, it indicates that the indoor heat exchange coil temperature is below the target temperature value. At this point, a frequency change of less than zero needs to be set to reduce the compressor frequency and avoid a significant temperature drop. Thus, this embodiment of the present disclosure can set the frequency change based on the matching of different temperature ranges associated with the indoor heat exchange coil temperature value and the second target temperature value, achieving precise adjustment of the compressor frequency corresponding to the indoor heat exchange coil.

[0080] Optionally, combined Figure 5 As shown, the processor determines the target temperature value in the following manner:

[0081] S31, the processor obtains the indoor ambient temperature value T. r and relative humidity value R h Among them, R h This indicates the indoor relative humidity value.

[0082] S32, the processor determines the indoor ambient temperature value T r Relative humidity value R h Obtain the dew point temperature value T L .

[0083] In this step, the processor determines the indoor ambient temperature value T. r Relative humidity value R h Obtain the dew point temperature value T L , including: T L =a×T r +b×R h +c.

[0084] Where a represents the first coefficient, b represents the second coefficient, and c represents the third coefficient. 22≤a≤25, 0.7≤b≤1.2, 28≤c≤32.

[0085] S33, the processor determines the dew point temperature value T. L Obtain the first target temperature value T i目标 and the second target temperature value T p目标 T i目标 =T L -ΔT d Tp目标 =T L -ΔT p .

[0086] Where, ΔT d This represents the first temperature deviation corresponding to the main refrigerant flow path, ΔT. p This represents the second temperature deviation corresponding to the indoor heat exchange coil. ΔT d >ΔT p .

[0087] When the air conditioner is operating under medium temperature and high humidity conditions, for example, when the indoor ambient temperature is 16-20℃ and the relative humidity is above 60%RH, weak cooling and dehumidification can meet the indoor temperature control requirements.

[0088] When an air conditioner operates in normal dehumidification mode, it typically lowers the temperature of the indoor heat exchange coil below the dew point to achieve a condensation effect. The dew point temperature is usually much lower than the indoor ambient temperature; for example, when the indoor ambient temperature is 20% and the relative humidity is 80% RH, the dew point temperature is 16.4℃. Since the lower the indoor ambient temperature and relative humidity, the lower the dew point temperature, in dehumidification mode, if the dehumidification capacity is small, the relative humidity may actually increase. Therefore, while this technology can achieve a cooling effect in normal dehumidification mode, the dehumidification effect is poor, failing to achieve the purpose of weak cooling dehumidification, thus affecting user comfort.

[0089] In this way, since the temperature of the main refrigerant flow path before the diversion is much lower than the dew point temperature, and the temperature of the indoor heat exchange coil is closer to the dew point temperature, this embodiment sets a larger first temperature deviation for the main refrigerant flow path before the diversion, and a smaller second temperature deviation for the indoor heat exchange coil after the diversion. This allows the refrigerant to exchange heat with the air before the diversion, achieving condensation and dehumidification, thus realizing weak cooling dehumidification.

[0090] Alternatively, 6℃≤ΔT d ≤8℃, 0℃≤ΔT p ≤2℃. It should be noted that ΔT d With ΔT p The specific values ​​can be set according to actual needs.

[0091] Combination Figure 6 As shown in the embodiments of this disclosure, another dehumidification control method for an air conditioner is provided, including:

[0092] S41, when the air conditioner is running in dehumidification mode, the processor obtains the temperature value of the main refrigerant flow path and the temperature value of the indoor heat exchange coil.

[0093] S42, the processor obtains the target frequency of the compressor based on the matching of the temperature values ​​of the main refrigerant flow path and the indoor heat exchange coil with the target temperature value.

[0094] S43, the processor controls the compressor to operate at a target frequency so that the refrigerant exchanges heat with the air before being split to achieve condensation and dehumidification.

[0095] S44, the processor controls the auxiliary heating device to start, so as to raise the temperature value of the middle and end of the indoor heat exchange coil, and achieve weak cooling dehumidification.

[0096] In this step, the auxiliary heating device is installed on the piping from the middle of the indoor heat exchange coil to the corresponding branch outlet. The indoor heat exchange coil includes a front section, a middle section, and a rear section. A branch inlet is located at the front section, and a branch outlet is located at the rear section. The refrigerant flows sequentially through the front, middle, and rear sections after entering through the branch inlet, and then exits through the branch outlet.

[0097] The dehumidification control method for air conditioners provided in this disclosure, by comprehensively considering the temperature conditions before and after refrigerant diversion, can minimize the impact of uneven refrigerant diversion on the compressor's frequency control, effectively improving the accuracy of compressor frequency regulation during low-frequency operation and enhancing the precision of indoor temperature and humidity control. Simultaneously, this disclosure, by controlling the activation of an auxiliary heating device, compensates for the indoor unit's capacity, assisting it in achieving a slight increase in temperature and dehumidification.

[0098] It should be noted that the processor-controlled auxiliary heating device can be activated simultaneously with the processor-controlled compressor operating at the target frequency to achieve condensation and dehumidification through heat exchange between the refrigerant and the air before the refrigerant is spun out, or it can be activated after the processor-controlled compressor is operating at the target frequency to achieve condensation and dehumidification through heat exchange between the refrigerant and the air before the refrigerant is spun out, or it can be activated before the processor-controlled compressor is operating at the target frequency to achieve condensation and dehumidification through heat exchange between the refrigerant and the air before the refrigerant is spun out. This disclosure does not impose specific limitations on this aspect.

[0099] Combination Figure 7 As shown in the embodiments of this disclosure, another dehumidification control method for an air conditioner is provided, including:

[0100] S51, when the air conditioner is running in dehumidification mode, the processor controls the compressor to start at the initial frequency, controls the indoor fan to run at high speed, and controls the electronic expansion valve to open at the preset opening value.

[0101] In this step, the preset opening value ranges from [120, 160], and the unit is steps.

[0102] S52, the processor obtains the temperature value of the main refrigerant flow path and the temperature value of the indoor heat exchange coil.

[0103] S53, the processor obtains the target frequency of the compressor based on the matching of the temperature values ​​of the main refrigerant flow path and the indoor heat exchange coil with the target temperature value.

[0104] S54, the processor controls the compressor to operate at a target frequency so that the refrigerant exchanges heat with the air before being split to achieve condensation and dehumidification.

[0105] The dehumidification control method for air conditioners provided in this disclosure, when the air conditioner is running in dehumidification mode, controls the compressor to start at an initial frequency, controls the indoor fan to run at a high speed, and / or controls the electronic expansion valve to open at a preset opening value, so that the air conditioner starts at a lower frequency and performs dehumidification operation. By comprehensively considering the temperature conditions before and after refrigerant distribution, this disclosure can minimize the impact of uneven refrigerant distribution on the compressor's frequency control, effectively improving the accuracy of compressor frequency regulation during low-frequency operation and enhancing the precision of indoor temperature and humidity control. This achieves a weak cooling dehumidification effect.

[0106] It should be noted that the processor controlling the indoor fan to operate at high speed and the electronic expansion valve to open at a preset opening value can be executed simultaneously with the processor obtaining the temperature values ​​of the main refrigerant flow path and the indoor heat exchange coil, or it can be executed before or after the processor obtains the temperature values ​​of the main refrigerant flow path and the indoor heat exchange coil. This embodiment of the present disclosure does not impose specific limitations on this.

[0107] Optionally, combined Figure 8 As shown, the processor determines that the air conditioner should operate in dehumidification mode in the following manner:

[0108] S61, the processor obtains the outdoor temperature value T. ao With relative humidity value R h .

[0109] S62, processor in T ao <T 上限阈值 And R h >R h上限阈值 In such cases, turn on the dehumidification mode.

[0110] Among them, T 上限阈值 R represents the upper temperature threshold. h上限阈值 This indicates the upper limit threshold for relative humidity.

[0111] 15℃ <T 上限阈值 <22℃, 60% <R h上限阈值 <%

[0112] Thus, in the embodiments of this disclosure, in T ao <T 上限阈值 And R h >R h上限阈值 This indicates that the outdoor temperature is relatively moderate and the relative humidity is relatively high. At this time, while performing dehumidification, it is sufficient to maintain the indoor ambient temperature, thus achieving weak cooling dehumidification.

[0113] In practical applications, such as Figure 9 As shown, the dehumidification control method for air conditioners specifically implements the following steps:

[0114] S101, The processor obtains the outdoor temperature value T. ao With relative humidity value R h And obtain the temperature value T of the main refrigerant flow path. d and the temperature value T of the indoor heat exchange coil p .

[0115] S102, processor in T ao <T 上限阈值 And R h >R h上限阈值 In such cases, turn on the dehumidification mode.

[0116] S103, the processor controls the compressor to start at the initial frequency, controls the indoor fan to run at high speed, and controls the electronic expansion valve to open at a preset opening value.

[0117] S104, The processor obtains the indoor ambient temperature value T. r and indoor relative humidity value R h .

[0118] S105, the processor determines the indoor ambient temperature value T. r Relative humidity value R h Obtain the dew point temperature value T L .

[0119] S106, the processor determines the dew point temperature value T. L Obtain the first target temperature value T i目标 and the second target temperature value T p目标 T i目标 =T L -ΔT d T p目标 =T L -ΔT p .

[0120] S107, processor in T d >T i目标 +ΔT s0In this case, the first frequency change is determined to be ΔF1. Step S113 is then executed.

[0121] S108, processor in T i目标 -ΔT s0 ≤T d ≤T i目标 +ΔT s0 In this case, determine that the first frequency change is 0. Execute step S113.

[0122] S109, processor in T d <T i目标 -ΔT s0 In this case, the first frequency change is determined to be ΔF2. Step S113 is then executed.

[0123] S110, processor in T p >T p目标 +ΔT s1 In this case, the change in the second frequency is determined to be ΔF1. Step S114 is then executed.

[0124] S111, processor in T p目标 -ΔT s1 ≤T p ≤T p目标 +ΔT s1 In this case, determine that the change in the second frequency is 0. Execute step S114.

[0125] S112, processor in T p <T p目标 -ΔT s1 In this case, the change in the second frequency is determined to be ΔF2. Step S114 is then executed.

[0126] S113, the processor adds the initial frequency to the first frequency change to obtain the first frequency.

[0127] S114, the processor adds the initial frequency to the change in the second frequency to obtain the second frequency.

[0128] S115, the processor selects the minimum value between the first frequency and the second frequency as the target frequency of the compressor.

[0129] S116, the processor controls the compressor to run at the target frequency.

[0130] Combination Figure 10As shown, this embodiment of the present disclosure provides a dehumidification control device 200 for an air conditioner, including a temperature detection module 201, a frequency acquisition module 202, and an execution module 203. The temperature detection module 201 is configured to acquire the temperature value of the main refrigerant flow path and the temperature value of the indoor heat exchange coil when the air conditioner is operating in dehumidification mode; the frequency acquisition module 202 is configured to obtain the target frequency of the compressor based on the matching of the temperature values ​​of the main refrigerant flow path and the indoor heat exchange coil with the target temperature value; the execution module 203 is configured to control the compressor to operate at the target frequency so that the refrigerant exchanges heat with the air before being shunted to achieve condensation dehumidification.

[0131] The dehumidification control device for air conditioners provided in this embodiment effectively improves the accuracy of frequency regulation of the compressor during low-frequency operation and enhances the precision of indoor temperature and humidity control.

[0132] Combination Figure 11 As shown, this disclosure provides a dehumidification control device 300 for an air conditioner, including a processor 400 and a memory 401. Optionally, the device may further include a communication interface 402 and a bus 403. The processor 400, communication interface 402, and memory 401 can communicate with each other via the bus 403. The communication interface 402 can be used for information transmission. The processor 400 can call logical instructions in the memory 401 to execute the dehumidification control method for an air conditioner described in the above embodiment.

[0133] Furthermore, the logic instructions in the aforementioned memory 401 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0134] The memory 401, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 400 executes functional applications and data processing by running the program instructions / modules stored in the memory 401, thereby implementing the dehumidification control method for air conditioners in the above embodiments.

[0135] The memory 401 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 401 may include high-speed random access memory and may also include non-volatile memory.

[0136] Combination Figure 12As shown, this disclosure provides an air conditioner 600, including a main refrigerant flow path, an indoor heat exchanger, and a dehumidification control device 200 (300) for the air conditioner as described above. The main refrigerant flow path is equipped with a first sensor for detecting the temperature value of the main refrigerant flow path. The indoor heat exchanger is equipped with an indoor heat exchange coil and a second sensor for detecting the temperature value of the indoor heat exchange coil. The refrigerant flowing through the main refrigerant flow path is diverted and then flows into the indoor heat exchange coil to achieve heat exchange. The dehumidification control device for the air conditioner is installed in the indoor heat exchanger. The installation relationship described herein is not limited to placement inside the product, but also includes installation connections with other components of the product, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the dehumidification control device 200 (300) for the air conditioner can be adapted to feasible product bodies to achieve other feasible embodiments.

[0137] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described dehumidification control method for an air conditioner.

[0138] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0139] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0140] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0141] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0142] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0143] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A dehumidification control method for an air conditioner, characterized by, The indoor unit comprises a plurality of indoor heat exchangers, each indoor heat exchanger is provided with an indoor heat exchange coil and a second sensor, the refrigerant flowing through the main refrigerant flow path is divided and flows into the indoor heat exchange coil, the main refrigerant flow path is provided with a first sensor, the first sensor is used for detecting the temperature value of the main refrigerant flow path to obtain the temperature condition of the pipeline before the refrigerant is divided, and the second sensor is used for detecting the temperature value of the indoor heat exchange coil to obtain the temperature condition of the indoor heat exchanger itself after the refrigerant is divided, and the method comprises: In the case that the air conditioner operates in the dehumidification mode, the temperature value of the main refrigerant flow path and the temperature value of the indoor heat exchange coil are obtained; According to the matching condition of the temperature value of the main refrigerant flow path and the first target temperature value, the first frequency change amount is determined; According to the matching condition of the temperature value of the indoor heat exchange coil and the second target temperature value, the second frequency change amount is determined; wherein the first target temperature value is less than the second target temperature value; The initial frequency and the first frequency change amount are superimposed to obtain the first frequency; The initial frequency and the second frequency change amount are superimposed to obtain the second frequency; The minimum value of the first frequency and the second frequency is selected as the target frequency of the compressor; The compressor is controlled to operate at the target frequency, so that the refrigerant exchanges heat with air before being divided to realize condensation dehumidification.

2. The method of claim 1, wherein, The first frequency change amount is determined according to the matching condition of the temperature value of the main refrigerant flow path and the first target temperature value, comprising: In the case where the first frequency variation amount is determined as ; In case the first frequency variation is determined to be 0; In the case where the first frequency variation amount is determined to be ; wherein, represents a temperature value of the main refrigerant flow path, represents a first target temperature value, represents a first deviation threshold value, .

3. The method of claim 1, wherein, The second frequency change amount is determined according to the matching condition of the temperature value of the indoor heat exchange coil and the second target temperature value, comprising: In the case where the second frequency variation amount is determined as ; In case the second frequency variation is determined to be 0; In the case where the second frequency variation amount is determined as ; wherein represents a temperature value of the indoor heat exchange coil, represents a second target temperature value, represents a second deviation threshold value, .

4. The method of claim 1, wherein, The target temperature value is determined in the following manner: Acquiring an indoor environment temperature value and a relative humidity value ; According to the indoor ambient temperature value and the relative humidity value , a dew point temperature value is obtained; According to the dew point temperature value , a first target temperature value and a second target temperature value are obtained , ; wherein, represents a first temperature offset corresponding to the main refrigerant flow path, represents a second temperature offset corresponding to the indoor heat exchange coil, .

5. The method of claim 4, wherein, ， 。 6. The method of claim 4, wherein, Said dew point temperature value is obtained from the indoor environment temperature value and the relative humidity value , comprising: ； Wherein a represents the first coefficient, b represents the second coefficient, c represents the third coefficient, 22≤a≤25, 0.7≤b≤1.2, 28≤c≤32.

7. The method according to any one of claims 1 to 6, characterized in that, The auxiliary heating device is installed at the pipeline corresponding to the middle part of the indoor heat exchange coil to the division outlet, and the method further comprises: The auxiliary heating device is controlled to start to increase the temperature value of the middle part and the end part of the indoor heat exchange coil to realize weak cold dehumidification.

8. The method according to any one of claims 1 to 6, characterized in that, After the air conditioner operates in the dehumidification mode, the method further comprises: The compressor is controlled to start at the initial frequency, and the indoor fan is controlled to operate at a high wind speed and the electronic expansion valve is controlled to open at a preset opening value.

9. The method according to any one of claims 1 to 6, characterized in that, The air conditioner is determined to operate in the dehumidification mode in the following manner: Acquiring an outdoor temperature value with a relative humidity value ; In and case, the dehumidification mode is started. wherein represents a temperature upper threshold value, represents a relative humidity upper threshold value.

10. A dehumidification control device for an air conditioner, characterized by comprising: The indoor unit comprises a plurality of indoor heat exchangers, each indoor heat exchanger is provided with an indoor heat exchange coil and a second sensor, the refrigerant flowing through the main refrigerant flow path is divided and flows into the indoor heat exchange coil, the main refrigerant flow path is provided with a first sensor, the first sensor is used for detecting the temperature value of the main refrigerant flow path to obtain the temperature condition of the pipeline before the refrigerant is divided, and the second sensor is used for detecting the temperature value of the indoor heat exchange coil to obtain the temperature condition of the indoor heat exchanger itself after the refrigerant is divided, and the control device comprises: The temperature detection module is configured to obtain the temperature value of the main refrigerant flow path and the temperature value of the indoor heat exchange coil in the case that the air conditioner operates in the dehumidification mode. The frequency acquisition module is configured to determine a first frequency variation according to a matching condition between the temperature value of the main refrigerant flow path and a first target temperature value; determine a second frequency variation according to a matching condition between the temperature value of the indoor heat exchange coil and a second target temperature value; superimpose the initial frequency and the first frequency variation to obtain a first frequency; superimpose the initial frequency and the second frequency variation to obtain a second frequency; select the minimum value between the first frequency and the second frequency as the target frequency of the compressor; and the first target temperature value is less than the second target temperature value. The execution module is configured to control the compressor to operate at the target frequency, so that the refrigerant realizes condensation dehumidification by exchanging heat with air before being branched.

11. A dehumidification control apparatus for an air conditioner, comprising a processor and a memory having stored therein program instructions, wherein, The processor is configured to execute the dehumidification control method for the air conditioner according to any one of claims 1 to 9 when the program instructions are executed.

12. An air conditioner characterized by comprising: The processor is configured to execute the dehumidification control method for the air conditioner according to any one of claims 1 to 9 when the program instructions are executed. The processor is configured to execute the dehumidification control method for the air conditioner according to any one of claims 1 to 9 when the program instructions are executed. The processor is configured to execute the dehumidification control method for the air conditioner according to any one of claims 1 to 9 when the program instructions are executed. The processor is configured to execute the dehumidification control method for the air conditioner according to any one of claims 1 to 9 when the program instructions are executed.

13. A storage medium storing program instructions, characterized in that, ​

Images