Refrigeration and dehumidification control method and device, air conditioner and computer readable storage medium

Abstract

Embodiments of the present application provide a refrigeration and dehumidification control method and device, an air conditioner and a computer readable storage medium. The refrigeration and dehumidification control method comprises: in response to receiving a refrigeration and dehumidification instruction, controlling the air conditioner to operate in a refrigeration and dehumidification mode; determining a target indoor coil dew point temperature according to a set temperature; determining whether a temperature difference between a current indoor coil temperature and the target indoor coil dew point temperature is less than a first preset temperature difference; in response to determining that the temperature difference between the current indoor coil temperature and the target indoor coil dew point temperature is less than the first preset temperature difference, controlling the air conditioner to switch to a heating mode until a temperature difference between a current indoor temperature and the set temperature is within a first preset temperature difference interval.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to a refrigeration and dehumidification control method and device, an air conditioner and a computer readable storage medium. BACKGROUND

[0002] In related technologies, some air conditioners are provided with humidity sensors, which can more accurately monitor and control indoor humidity and have better dehumidification effect, but the device cost is higher. Some air conditioners are not provided with humidity sensors, which are prone to insufficient dehumidification, excessive dehumidification and other problems during dehumidification, resulting in poor indoor environmental comfort. SUMMARY

[0003] The embodiments of the present application provide a refrigeration and dehumidification control method and device, an air conditioner and a computer readable storage medium, which can control the air conditioner to more accurately dehumidify the indoor environment without setting a humidity sensor, thereby effectively improving the comfort of the indoor environment at a low cost.

[0004] In a first aspect, the embodiments of the present application provide a refrigeration and dehumidification control method for controlling an air conditioner, the air conditioner comprising a compressor and an indoor fan, the refrigeration and dehumidification control method comprising: in response to receiving a refrigeration and dehumidification instruction, controlling the air conditioner to operate in a refrigeration and dehumidification mode; determining a target indoor coil dew point temperature according to a set temperature; determining whether a temperature difference between a current indoor coil temperature and the target indoor coil dew point temperature is less than a first preset temperature difference; in response to determining that the temperature difference between the current indoor coil temperature and the target indoor coil dew point temperature is less than the first preset temperature difference, controlling the air conditioner to switch to a heating mode until a temperature difference between a current indoor temperature and the set temperature is within a first preset temperature difference interval.

[0005] In some embodiments, controlling the air conditioner to operate in the refrigeration and dehumidification mode comprises: controlling the air conditioner to operate at refrigeration operation parameters; in response to the air conditioner operating at the refrigeration operation parameters for a first preset time length, determining whether a temperature difference between the current indoor temperature and the set temperature is within a second preset temperature difference interval; in response to determining that the temperature difference between the current indoor temperature and the set temperature is within the second preset temperature difference interval, performing the following dehumidification operation: controlling the compressor to reduce the frequency to a first dehumidification frequency and controlling the indoor fan to reduce the speed to a first dehumidification speed; determining whether an indoor temperature drop rate is less than a preset temperature drop rate; in response to determining that the indoor temperature drop rate is less than the preset temperature drop rate, controlling the compressor to increase the frequency to a second dehumidification frequency and controlling the indoor fan to increase the speed to a second dehumidification speed, the first dehumidification frequency being less than the second dehumidification frequency, and the first dehumidification speed being greater than the second dehumidification speed; the minimum value of the first preset temperature difference interval being greater than the minimum value of the second preset temperature difference interval.

[0006] In some embodiments, the air conditioner has an indoor air outlet and a guide mechanism movably arranged at the indoor air outlet; the dehumidifying operation comprises: controlling the guide mechanism to move to a minimum air outlet angle when the compressor is controlled to reduce the frequency to a first dehumidifying frequency and the indoor fan is controlled to reduce the speed to a first dehumidifying speed.

[0007] In some embodiments, the air conditioner has an indoor air outlet and a guide mechanism movably arranged at the indoor air outlet; the dehumidifying operation comprises: in response to determining that the indoor temperature drop rate is less than a preset temperature drop rate, controlling the guide mechanism to move to a maximum air outlet angle.

[0008] In some embodiments, the air conditioner is controlled to operate at a cooling operation parameter, comprising: obtaining a current outdoor temperature and a set temperature; determining a cooling operation frequency of the compressor and a cooling operation speed of the indoor fan according to the current outdoor temperature and the set temperature; controlling the compressor to operate at the cooling operation frequency, and controlling the indoor fan to operate at the cooling operation speed.

[0009] In some embodiments, the air conditioner has an indoor air outlet and a guide mechanism movably arranged at the indoor air outlet; the air conditioner is controlled to operate at a cooling operation parameter, comprising: controlling the guide mechanism to move to a maximum air outlet angle.

[0010] In some embodiments, after determining whether a temperature difference between a current indoor temperature and a set temperature is within a second preset temperature difference interval, the air conditioner is controlled to operate in a cooling and dehumidifying mode, comprising: in response to determining that the temperature difference between the current indoor temperature and the set temperature is less than a minimum value of the second preset temperature difference interval, controlling the air conditioner to operate in a heating mode until the temperature difference between the current indoor temperature and the set temperature is within the second preset temperature difference interval.

[0011] In some embodiments, the air conditioner has an indoor air outlet and a guide mechanism movably arranged at the indoor air outlet; after determining whether a temperature difference between a current indoor temperature and a set temperature is within a second preset temperature difference interval, the air conditioner is controlled to operate in a cooling and dehumidifying mode, comprising: in response to determining that the temperature difference between the current indoor temperature and the set temperature is greater than a maximum value of the second preset temperature difference interval, controlling the guide mechanism to move to a maximum air outlet angle.

[0012] In a second aspect, the embodiments of the present application provide a refrigeration and dehumidification control device for controlling an air conditioner, the air conditioner comprising a compressor and an indoor fan, the refrigeration and dehumidification control device comprising: a dehumidification control circuit configured to control the air conditioner to operate in a refrigeration and dehumidification mode in response to receiving a refrigeration and dehumidification instruction; a dew point temperature calculation circuit configured to determine a target indoor coil dew point temperature according to a set temperature; a temperature difference comparison circuit configured to determine whether a temperature difference between a current indoor coil temperature and the target indoor coil dew point temperature is less than a first preset temperature difference; and a switching control circuit configured to control the air conditioner to switch to a heating mode in response to determining that the temperature difference between the current indoor coil temperature and the target indoor coil dew point temperature is less than the first preset temperature difference, until a temperature difference between a current indoor temperature and the set temperature is within a first preset temperature difference range.

[0013] In a third aspect, the embodiments of the present application provide an air conditioner, comprising: a compressor; an indoor fan; a memory storing a computer program; and a processor, wherein the computer program is executed by the processor to implement the refrigeration and dehumidification control method according to any one of the above embodiments.

[0014] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium having a computer program stored thereon, wherein the computer program is loaded by a processor to perform the steps of the refrigeration and dehumidification control method described above.

[0015] The refrigeration and dehumidification control method provided by the embodiments of the present application first controls the air conditioner to operate in a refrigeration and dehumidification mode to simultaneously reduce the indoor temperature and the indoor humidity for dehumidification, and then controls the air conditioner to switch to a heating mode when the temperature difference between the current indoor coil temperature and the target indoor coil dew point temperature is less than the first preset temperature difference, and controls the air conditioner to operate in the heating mode until the temperature difference between the current indoor temperature and the set temperature is within the first preset temperature difference range, so as to raise the indoor temperature to the vicinity of the set temperature, thereby accurately adjusting the indoor temperature to the set temperature and accurately adjusting the indoor humidity to the comfortable humidity corresponding to the set temperature, and effectively improving the comfort of the indoor environment. Compared with related technologies, the refrigeration and dehumidification control method provided by the embodiments of the present application does not need to be applied to an air conditioner with a humidity sensor, thereby significantly reducing the hardware cost of the air conditioner. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0017] Figure 1is a flow chart of a refrigeration and dehumidification control method provided by some embodiments of the present application;

[0018] Figure 2 is a partial flow chart of a refrigeration and dehumidification control method provided by some embodiments of the present application;

[0019] Figure 3 is another partial flow chart of a refrigeration and dehumidification control method provided by some embodiments of the present application;

[0020] Figure 4 is still another partial flow chart of a refrigeration and dehumidification control method provided by some embodiments of the present application;

[0021] Figure 5 is yet another partial flow chart of a refrigeration and dehumidification control method provided by some embodiments of the present application;

[0022] Figure 6 is a structural diagram of an air conditioner provided by some embodiments of the present application.

[0023] Main element symbol explanation:

[0024] 1-air conditioner, 10-processor, 20-memory. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0027] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0028] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0029] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0030] like Figure 1 As shown, in a first aspect, embodiments of this application provide a cooling and dehumidification control method for controlling an air conditioner 1. The cooling and dehumidification control method includes S10 to S40, which can control the air conditioner 1 to dehumidify the indoor environment more accurately without setting a humidity sensor, thereby effectively improving the comfort of the indoor environment at low cost.

[0031] The air conditioner 1 includes a compressor and an indoor fan. The type of air conditioner 1 can be determined according to actual needs, and can be, for example, a wall-mounted air conditioner, a cabinet air conditioner, a window air conditioner, or other air conditioner types with dehumidification functions. This embodiment of the application does not limit this. Here, the air conditioner 1 may not be equipped with a humidity sensor.

[0032] S10: In response to receiving a cooling and dehumidification command, control the air conditioner 1 to operate in cooling and dehumidification mode.

[0033] Here, the cooling and dehumidifying command can be input by the user through a control terminal such as a remote control, control panel, or application on a smart terminal to control the air conditioner 1 to reduce indoor humidity through cooling and dehumidification. When the air conditioner 1 is running in cooling and dehumidification mode, it dehumidifies by cooling the indoor air, causing the indoor temperature and humidity to drop simultaneously to achieve the purpose of dehumidification.

[0034] S20: Determine the target indoor coil dew point temperature according to the set temperature.

[0035] Here, the set temperature can be inputted to the air conditioner 1 by a user through a control terminal such as a remote controller, a control panel, an application program on a smart terminal, etc., which is a target temperature that the user intends to achieve for the indoor environment.

[0036] The specific calculation manner of determining the target indoor coil dew point temperature according to the set temperature can be determined according to actual needs, which is not limited in the embodiments of the present application. In some examples, the specific calculation manner of determining the target indoor coil dew point temperature according to the set temperature can be determined in advance, for example, a calculation equation, a mapping relationship between the set temperature and the target indoor coil dew point temperature, etc. can be established in advance, and the specific calculation manner is set in the control system of the air conditioner 1 in advance. In this way, the target indoor coil dew point temperature corresponding to the set temperature can be determined according to the obtained set temperature.

[0037] For example, the target indoor coil dew point temperature can be determined according to the set temperature and the set humidity. Here, the set humidity can be inputted to the air conditioner 1 by a user through a control terminal such as a remote controller, a control panel, an application program on a smart terminal, etc., which is a target humidity that the user intends to achieve for the indoor environment, i.e. the user's comfortable humidity; or the set humidity can also be set as a preset value or a series of preset values in the air conditioner 1, and can be continuously updated according to the actual operation condition of the air conditioner 1, which is the user's comfortable humidity or habit humidity. Further, the specific calculation manner of determining the target indoor coil dew point temperature according to the set temperature and the set humidity can be determined in advance, for example, a calculation equation, a mapping relationship between the set temperature-set humidity and the target indoor coil dew point temperature, etc. can be established in advance, and the specific calculation manner is set in the control system of the air conditioner 1 in advance. In this way, the target indoor coil dew point temperature corresponding to the set temperature-set humidity can be determined according to the obtained set temperature and set humidity.

[0038] S30: Determine whether the temperature difference between the current indoor coil temperature and the target indoor coil dew point temperature is less than a first preset temperature difference.

[0039] Here, the current indoor coil temperature can be measured in real time by a temperature sensor arranged on the indoor coil; the first preset temperature difference can be set in the control system of the air conditioner 1, which is used as a judgment mark of the closeness between the current indoor humidity and the target humidity, and the target humidity is the comfortable humidity that the air conditioner 1 is expected to achieve when performing refrigeration and dehumidification. Further, the temperature difference between the current indoor coil temperature and the target indoor coil dew point temperature can be calculated, and the temperature difference is compared with the first preset temperature difference. The specific value of the first preset temperature difference can be determined according to actual needs, which is not limited in the embodiments of the present application.

[0040] S40: in response to determining that the temperature difference between the current indoor coil temperature and the target indoor coil dew point temperature is less than the first preset temperature difference, controlling the air conditioner 1 to switch to the heating mode until the temperature difference between the current indoor temperature and the set temperature is within the first preset temperature difference interval.

[0041] In the case where it is determined that the temperature difference between the current indoor coil temperature and the target indoor coil dew point temperature is less than the first preset temperature difference, it can be determined that the current indoor humidity has been reduced to the target humidity or a comfortable humidity range near the target humidity, and the current indoor humidity can make the user feel more comfortable. At this time, the air conditioner 1 can be controlled to stop cooling and dehumidification, and the air conditioner 1 can be controlled to switch to the heating mode to raise the indoor temperature to the set temperature or near the set temperature, so as to avoid the indoor temperature being too low and causing user discomfort.

[0042] Here, the current indoor temperature can be measured in real time by a temperature sensor arranged on the indoor side of the air conditioner 1. The first preset temperature difference interval can be pre-set in the control system of the air conditioner 1 to determine the proximity between the current indoor temperature and the set temperature. When the temperature difference between the current indoor temperature and the set temperature is within the first preset temperature difference interval, it indicates that the current indoor temperature and the set temperature are equal or close, and are within the target temperature range of the user, and the air conditioner 1 can be controlled to stop heating.

[0043] Here, the specific range of the first preset temperature difference interval can be determined according to actual needs, which is not limited in the embodiments of the present application. In some examples, the first preset temperature difference interval can be a temperature interval greater than a second preset temperature and less than a third preset temperature, the second preset temperature is less than 0℃, and the third preset temperature is greater than 0℃; for example, the absolute values of the second preset temperature and the third preset temperature are equal, and the absolute value can be in the range of 0.5-2℃, such as 0.5℃, 1℃, 1.5℃ or 2℃, etc.

[0044] The cooling and dehumidification control method provided by the embodiments of the present application first controls the air conditioner 1 to operate in the cooling and dehumidification mode to simultaneously lower the indoor temperature and the indoor humidity for dehumidification, and when it is determined that the temperature difference between the current indoor coil temperature and the target indoor coil dew point temperature is less than the first preset temperature difference, the air conditioner 1 is controlled to switch to the heating mode, and the air conditioner 1 is controlled to operate in the heating mode until the temperature difference between the current indoor temperature and the set temperature is within the first preset temperature difference interval, so that the indoor temperature is raised to the set temperature or near the set temperature, so that the indoor temperature is accurately adjusted to the set temperature and the indoor humidity is accurately adjusted to the comfortable humidity corresponding to the set temperature, and the comfort of the indoor environment is effectively improved; compared with related technologies, when the cooling and dehumidification control method provided by the embodiments of the present application is applied to the air conditioner 1, the air conditioner 1 does not need to be provided with a humidity sensor, thereby significantly reducing the hardware cost of the air conditioner 1.

[0045] like Figure 2 As shown, in some embodiments, S10 may include S11 to S13.

[0046] S11: Control air conditioner 1 to operate with cooling parameters.

[0047] Here, the cooling operation parameters are the operating parameters used to control the air conditioner 1 to achieve the cooling effect. By controlling the air conditioner 1 to operate at the cooling operation parameters, the indoor temperature can be dropped rapidly to achieve a rapid cooling effect, while the indoor humidity can be gradually reduced to at least a small extent.

[0048] like Figure 3 As shown, in some examples, S11 may include S111 to S113.

[0049] S111: Get the current outdoor temperature and the set temperature.

[0050] Here, the current outdoor temperature can be measured in real time by a temperature sensor installed on the outdoor side of the air conditioner 1, or it can be obtained by the air conditioner 1 from local meteorological information released by the meteorological measurement unit through a communication network. This application embodiment does not limit this.

[0051] S112: Determine the compressor's cooling operation frequency and the indoor fan's cooling operation speed based on the current outdoor temperature and the set temperature.

[0052] Here, calculation models can be pre-established regarding the relationship between outdoor temperature, set temperature, and compressor cooling operation frequency, as well as the relationship between outdoor temperature, set temperature, and indoor fan cooling operation speed. These calculation models are then pre-set in the control system of air conditioner 1. In this way, based on the current outdoor temperature, set temperature, and the aforementioned calculation models, the compressor cooling operation frequency and indoor fan cooling operation speed can be determined.

[0053] S113: Controls the compressor to operate at the cooling frequency and controls the indoor fan to operate at the cooling speed.

[0054] By setting S111 to S113, the indoor temperature can be quickly reduced to or near the set temperature to meet the cooling requirements.

[0055] In some embodiments, the air conditioner 1 has an indoor air outlet and an air guide mechanism movably arranged at the indoor air outlet. The operation mode of the air guide mechanism can be determined according to actual needs, and one or more of, for example, swing, translation and other operation modes can be adopted, which are not limited in the embodiments of the present application. In some examples, the air guide mechanism can include an air guide plate and a sweeping blade mechanism, and the swing direction of the air guide plate and the swing direction of the sweeping blade mechanism are perpendicular or angularly inclined to achieve different directions of sweeping effect. For example, the air guide plate can swing up and down to sweep, and the sweeping blade mechanism can swing left and right to sweep; for another example, the air guide plate can swing left and right to sweep, and the sweeping blade mechanism can swing up and down to sweep. In some examples, in S11, the air guide mechanism can be controlled to move to a set air outlet angle according to the set parameters of the user. In other examples, S11 can include S114.

[0056] S114: controlling the air guide mechanism to move to a maximum air outlet angle.

[0057] When the air guide mechanism moves to the maximum air outlet angle, the air outlet area of the indoor air outlet reaches the maximum value. In this way, under the premise that the rotation speed of the indoor fan remains unchanged, the air outlet quantity of the indoor air outlet can reach the maximum, so as to rapidly reduce the indoor temperature.

[0058] S12: in response to the air conditioner 1 operating at the cooling operation parameters for a first preset time length, determining whether the temperature difference between the current indoor temperature and the set temperature is located in a second preset temperature difference interval.

[0059] Here, the first preset time length can be pre-set in the control system of the air conditioner 1, and is used as the lower limit time length when the air conditioner 1 operates at the cooling operation parameters, that is, the air conditioner 1 is controlled to operate at the cooling operation parameters at least for the first preset time length. At this time, it can be judged whether the temperature difference between the current indoor temperature and the set temperature is located in the second preset temperature difference interval, so as to determine the closeness between the current indoor temperature and the set temperature.

[0060] Here, the second preset temperature difference interval and the above-mentioned first preset temperature difference interval can be temperature intervals that do not overlap or only partially overlap, which are not limited in the embodiments of the present application. For example, the minimum value of the first preset temperature difference interval can be set to be greater than the minimum value of the second preset temperature difference interval. For example, the first preset temperature difference interval can be a temperature interval greater than the second preset temperature and less than the third preset temperature, the second preset temperature difference interval can be a temperature interval greater than the fourth preset temperature and less than 0℃, the second preset temperature is less than 0℃, the third preset temperature is greater than 0℃, and the fourth preset temperature is less than the second preset temperature. The specific values of the second preset temperature, the third preset temperature and the fourth preset temperature can be determined according to actual needs, which are not limited in the embodiments of the present application.

[0061] S13: In response to determining that the temperature difference between the current indoor temperature and the set temperature is located in the second preset temperature difference interval, the following dehumidification operation is performed, such as S131-S133.

[0062] S131: The compressor is controlled to reduce the frequency to a first dehumidification frequency, and the indoor fan is controlled to reduce the speed to a first dehumidification speed. Here, the first dehumidification frequency is less than the refrigeration running frequency, and the first dehumidification speed is less than the refrigeration running speed.

[0063] When it is determined that the temperature difference between the current indoor temperature and the set temperature is located in the second preset temperature difference interval, it can be determined that the current indoor temperature and the set temperature are equal or relatively close, and the refrigeration demand for reducing the indoor temperature is small; at this time, the compressor can be controlled to reduce the frequency and the indoor fan to reduce the speed, so that the cold quantity of the indoor heat exchanger is mainly used for dehumidifying the indoor air, the dehumidification effect is enhanced to rapidly reduce the indoor humidity, and the cooling effect is reduced to avoid overcooling of the indoor environment.

[0064] S132: Determine whether the indoor temperature drop rate is less than a preset temperature drop rate.

[0065] Here, the indoor temperature drop rate can be determined according to the indoor temperature data and the cooling time. The preset temperature drop rate is used to judge the main efficiency stage of the air conditioner 1, which can be determined in advance according to the experimental data of the air conditioner 1 and pre-set in the control system of the air conditioner 1, and then updated according to the actual operation data of the air conditioner 1.

[0066] Here, the main efficiency stage can include a main cooling efficiency stage and a main dehumidification efficiency stage. When the indoor temperature drop rate is greater than or equal to the preset temperature drop rate, it indicates that the air conditioner 1 is still in the main cooling efficiency stage with the cooling effect as the main one, and the cooling effect is strong and the dehumidification effect is weak; when the indoor temperature drop rate is less than the preset temperature drop rate, it indicates that the air conditioner 1 starts to enter the main dehumidification efficiency stage with the dehumidification effect as the main one, and the air conditioner 1 starts to have latent heat exchange, and the dehumidification effect gradually becomes obvious.

[0067] S133: In response to determining that the indoor temperature drop rate is less than the preset temperature drop rate, the compressor is controlled to increase the frequency to a second dehumidification frequency, and the indoor fan is controlled to accelerate to a second dehumidification speed. Here, the first dehumidification frequency is less than the second dehumidification frequency, and the first dehumidification speed is greater than the second dehumidification speed.

[0068] When it is determined that the indoor temperature drop rate is less than the preset temperature drop rate, it indicates that the air conditioner 1 starts to enter the main dehumidification efficiency stage with the dehumidification effect as the main one, and the air conditioner 1 starts to have latent heat exchange, and the dehumidification effect gradually becomes obvious. At this time, the compressor can be controlled to increase the frequency to further reduce the evaporation temperature of the indoor heat exchanger, increase the latent heat exchange amount of the indoor heat exchanger, and the indoor fan can be controlled to accelerate to increase the air exchange amount and improve the dehumidification amount, thereby significantly enhancing the dehumidification effect.

[0069] The specific values of the first dehumidification frequency and the second dehumidification frequency can be determined according to actual needs, and embodiments of the present application do not limit this; for example, the second dehumidification frequency can be less than the refrigeration operation frequency. The specific values of the first dehumidification rotation speed and the second dehumidification rotation speed can be determined according to actual needs, and embodiments of the present application do not limit this; for example, the second dehumidification rotation speed can be the medium gear, or the average of the upper rotation speed limit and the lower rotation speed limit, so that the indoor fan operates at a medium rotation speed, and the indoor air volume is maintained at a medium air volume to have a better dehumidification effect.

[0070] By setting S11-S13, the operating parameters of the air conditioner 1 can be accurately adjusted according to the main performance stages, and the air conditioner 1 is controlled to operate with matching operating parameters in different main performance stages, so that better refrigeration cooling effect is achieved in the main cooling performance stage, and better refrigeration dehumidification effect is achieved in the main dehumidification performance stage, and the dual purposes of temperature and humidity control are quickly and accurately achieved.

[0071] In some examples, the air conditioner 1 has an indoor air outlet and a wind guide mechanism as described above. As shown in Figure 4 The dehumidification operation can include S131'.

[0072] S131': When the compressor is controlled to reduce the frequency to the first dehumidification frequency and the indoor fan is controlled to reduce the rotation speed to the first dehumidification rotation speed, the wind guide mechanism is controlled to move to the minimum air outlet angle.

[0073] By controlling the wind guide mechanism to move to the minimum air outlet angle, the air outlet area of the indoor air outlet can reach a minimum value. In this way, the air outlet volume of the indoor air outlet can reach a minimum value on the premise that the rotation speed of the indoor fan remains unchanged, which can reduce the wind feeling and improve the air supply comfort on the one hand, and reduce the amount of cold air blown out to quickly reduce the indoor coil temperature and increase the heat exchange time of the indoor air in the indoor side of the air conditioner 1 on the other hand, thereby enhancing the dehumidification effect on the indoor air.

[0074] In some examples, the air conditioner 1 has an indoor air outlet and a wind guide mechanism as described above. Here, the dehumidification operation can include S133'.

[0075] S133': In response to determining that the indoor temperature drop rate is less than the preset temperature drop rate, the wind guide mechanism is controlled to move to the maximum air outlet angle.

[0076] When it is determined that the indoor temperature drop rate is less than the preset temperature drop rate, in addition to controlling the compressor to increase the frequency to the second dehumidification frequency and controlling the indoor fan to accelerate to the second dehumidification rotation speed, the wind guide mechanism can also be controlled to move to the maximum air outlet angle to avoid condensation when the dehumidification effect of the air conditioner 1 is enhanced.

[0077] AsFigure 5 As shown, in some examples, S10 can comprise S14 after S12.

[0078] S14: In response to determining that the temperature difference between the current indoor temperature and the set temperature is greater than the maximum value of the second preset temperature difference interval, controlling the air deflector to move to the maximum air outlet angle.

[0079] In S11, the air deflector can be controlled to move to the set air outlet angle according to the set parameters of the user. After S12, if it is determined that the temperature difference between the current indoor temperature and the set temperature is greater than the maximum value of the second preset temperature difference interval, it can be determined that the current indoor temperature is still significantly higher than the set temperature, at which time the compressor can be controlled to continue operating at the cooling operation frequency and the indoor fan can be controlled to continue operating at the cooling operation speed, and the air deflector can be controlled to move to the maximum air outlet angle to enhance the cooling effect and rapidly reduce the indoor temperature to the set temperature or the vicinity of the set temperature.

[0080] In some embodiments, S10 can comprise S15 after S12.

[0081] S15: In response to determining that the temperature difference between the current indoor temperature and the set temperature is less than the minimum value of the second preset temperature difference interval, controlling the air conditioner 1 to operate in the heating mode until the temperature difference between the current indoor temperature and the set temperature is within the second preset temperature difference interval.

[0082] When it is determined that the temperature difference between the current indoor temperature and the set temperature is less than the minimum value of the second preset temperature difference interval, it can be determined that the indoor temperature is too low, i.e., significantly lower than the set temperature. At this time, the air conditioner 1 needs to be controlled to operate in the heating mode to rapidly increase the indoor temperature until the temperature difference between the current indoor temperature and the set temperature is adjusted to be within the second preset temperature difference interval. After the temperature difference between the current indoor temperature and the set temperature is adjusted to be within the second preset temperature difference interval, the air conditioner 1 can be controlled to perform the above dehumidification operation. In this way, cooling dehumidification can be avoided when the indoor temperature is too low, and the indoor environment can be prevented from being too cold to cause significant discomfort to the user.

[0083] In a second aspect, the embodiments of the present application provide a refrigeration and dehumidification control device for controlling the air conditioner 1. The refrigeration and dehumidification control device comprises: a dehumidification control circuit configured to control the air conditioner 1 to operate in a refrigeration and dehumidification mode in response to receiving a refrigeration and dehumidification instruction; a dew point temperature calculation circuit configured to determine a target indoor coil dew point temperature according to a set temperature; a temperature difference comparison circuit configured to determine whether a temperature difference between a current indoor coil temperature and the target indoor coil dew point temperature is less than a first preset temperature difference; and a switching control circuit configured to control the air conditioner 1 to switch to a heating mode until a temperature difference between a current indoor temperature and the set temperature is within a first preset temperature difference range in response to determining that the temperature difference between the current indoor coil temperature and the target indoor coil dew point temperature is less than the first preset temperature difference.

[0084] As shown in Figure 6 In a third aspect, the embodiments of the present application provide an air conditioner 1. The air conditioner 1 comprises a compressor, an indoor fan, a processor 10, and a memory 20. The memory 20 stores a computer program. The computer program is executed by the processor 10 to implement the refrigeration and dehumidification control method provided in any of the above embodiments. The type of the air conditioner 1 can be determined according to actual needs. For example, the air conditioner 1 can be a wall-mounted air conditioner, a cabinet air conditioner, a window air conditioner, or any other type of air conditioner with a dehumidification function. The embodiments of the present application do not limit the type of the air conditioner 1. Here, the air conditioner 1 can not be provided with a humidity sensor.

[0085] The processor 10 is connected to the memory 20 and can perform various actions and processes according to the program stored in the memory 20. Specifically, the processor 10 can be an integrated circuit chip with signal processing capability. The processor 10 can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a ready-to-program gate array (FPGA), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and can implement or execute the disclosed methods, steps, and logic block diagrams in the embodiments of the present application. The general-purpose processor can be a microprocessor or any other conventional processor, and can be of X86 architecture or ARM architecture.

[0086] The memory 20 can be volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile memory can be read only memory (ROM), programmable read only memory (PROM), erasable programmable read only memory (EPROM), electrically erasable programmable read only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), used as external cache. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SynchBurst Dynamic Random Access Memory (SLDRAM), and Direct Rambus Dynamic Random Access Memory (DRRAM). Note that the memory 20 of the method described herein is intended to include, without being limited to, these and any other suitable types of memory.

[0087] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium, having stored thereon a computer program, which is loaded by the processor 10 to execute the steps in the control method of any of the above embodiments.

[0088] By way of example, and not limitation, such computer-readable storage media can include volatile memory, non-volatile memory, flash memory, or memoiy cards, etc. It should be noted that the computer-readable storage media described herein is intended to include, without being limited to, these and any other suitable types of media.

[0089] The above detailed description of the control method, device, air conditioner and computer readable storage medium provided by the embodiments of the present application has been described in detail, and the principles and implementation modes of the present application have been described by applying specific examples. The above description of the embodiments is only used to help understand the method and its core idea of the present application; meanwhile, according to the idea of the present application, the specific implementation mode and application range will be changed by those skilled in the art, and the above description should not be understood as a limitation of the present application.

Claims

1. A refrigeration dehumidification control method, characterized by, A method for controlling an air conditioner, the air conditioner comprising a compressor and an indoor fan, the refrigeration dehumidification control method comprising: in response to receiving a refrigeration dehumidification instruction, controlling the air conditioner to operate in a refrigeration dehumidification mode; determining a target indoor coil dew point temperature according to a set temperature; determining whether a temperature difference between a current indoor coil temperature and the target indoor coil dew point temperature is less than a first preset temperature difference; in response to determining that the temperature difference between the current indoor coil temperature and the target indoor coil dew point temperature is less than the first preset temperature difference, controlling the air conditioner to switch to a heating mode until a temperature difference between a current indoor temperature and the set temperature is within a first preset temperature difference interval; controlling the air conditioner to operate in the refrigeration dehumidification mode, comprising: controlling the air conditioner to operate in refrigeration operation parameters; in response to the air conditioner operating in the refrigeration operation parameters for a first preset time length, determining whether a temperature difference between the current indoor temperature and the set temperature is within a second preset temperature difference interval; in response to determining that the temperature difference between the current indoor temperature and the set temperature is within the second preset temperature difference interval, performing the following dehumidification operation: controlling the compressor to reduce frequency to a first dehumidification frequency and controlling the indoor fan to reduce speed to a first dehumidification rotating speed; determining whether an indoor temperature drop rate is less than a preset temperature drop rate; in response to determining that the indoor temperature drop rate is less than the preset temperature drop rate, controlling the compressor to increase frequency to a second dehumidification frequency and controlling the indoor fan to increase speed to a second dehumidification rotating speed, the first dehumidification frequency being less than the second dehumidification frequency, and the first dehumidification rotating speed being less than the second dehumidification rotating speed; a minimum value of the first preset temperature difference interval is greater than a minimum value of the second preset temperature difference interval.

2. The refrigeration dehumidification control method according to claim 1, wherein, The air conditioner has an indoor air outlet and a wind guide mechanism, the wind guide mechanism being movably arranged at the indoor air outlet; the dehumidification operation comprises: when controlling the compressor to reduce frequency to the first dehumidification frequency and controlling the indoor fan to reduce speed to the first dehumidification rotating speed, controlling the wind guide mechanism to move to a minimum air outlet angle.

3. The refrigeration dehumidification control method of claim 1, wherein, The air conditioner has an indoor air outlet and a wind guide mechanism, the wind guide mechanism being movably arranged at the indoor air outlet; the dehumidification operation comprises: in response to determining that the indoor temperature drop rate is less than the preset temperature drop rate, controlling the wind guide mechanism to move to a maximum air outlet angle.

4. The refrigeration dehumidification control method of claim 1, wherein, controlling the air conditioner to operate in the refrigeration operation parameters, comprising: obtaining a current outdoor temperature and a set temperature; determining refrigeration operation frequency of the compressor and refrigeration operation rotating speed of the indoor fan according to the current outdoor temperature and the set temperature; controlling the compressor to operate at the refrigeration operation frequency, and controlling the indoor fan to operate at the refrigeration operation rotating speed.

5. The refrigeration dehumidification control method according to claim 1, wherein The air conditioner has an indoor air outlet and a wind guide mechanism, the wind guide mechanism being movably arranged at the indoor air outlet; after determining whether a temperature difference between the current indoor temperature and the set temperature is within the second preset temperature difference interval, controlling the air conditioner to operate in the refrigeration dehumidification mode, comprising: in response to determining that the temperature difference between the current indoor temperature and the set temperature is greater than a maximum value of the second preset temperature difference interval, controlling the wind guide mechanism to move to a maximum air outlet angle.

6. The refrigeration dehumidification control method of claim 1, wherein, after determining whether the temperature difference between the current indoor temperature and the set temperature is located in the second preset temperature difference interval, controlling the air conditioner to operate in a cooling and dehumidifying mode, comprising: in response to determining that the temperature difference between the current indoor temperature and the set temperature is less than the minimum value of the second preset temperature difference interval, controlling the air conditioner to operate in a heating mode until the temperature difference between the current indoor temperature and the set temperature is located in the second preset temperature difference interval.

7. A refrigeration dehumidification control device, characterized by, A control device for controlling an air conditioner, the air conditioner comprising a compressor and an indoor fan, the cooling and dehumidifying control device comprising: a dehumidifying control circuit configured to control the air conditioner to operate in a cooling and dehumidifying mode in response to receiving a cooling and dehumidifying instruction; controlling the air conditioner to operate in a cooling and dehumidifying mode comprises: controlling the air conditioner to operate in a cooling operation parameter; in response to the air conditioner operating in a cooling operation parameter for a first preset time length, determining whether the temperature difference between the current indoor temperature and the set temperature is located in the second preset temperature difference interval; in response to determining that the temperature difference between the current indoor temperature and the set temperature is located in the second preset temperature difference interval, performing the following dehumidifying operation: controlling the compressor to reduce the frequency to a first dehumidifying frequency and controlling the indoor fan to reduce the speed to a first dehumidifying rotating speed; determining whether the indoor temperature drop rate is less than a preset temperature drop rate; in response to determining that the indoor temperature drop rate is less than the preset temperature drop rate, controlling the compressor to increase the frequency to a second dehumidifying frequency and controlling the indoor fan to increase the speed to a second dehumidifying rotating speed, the first dehumidifying frequency being less than the second dehumidifying frequency, and the first dehumidifying rotating speed being less than the second dehumidifying rotating speed; the minimum value of the first preset temperature difference interval is greater than the minimum value of the second preset temperature difference interval; a dew point temperature calculation circuit configured to determine a target indoor coil dew point temperature according to the set temperature; a temperature difference comparison circuit configured to determine whether the temperature difference between the current indoor coil temperature and the target indoor coil dew point temperature is less than a first preset temperature difference; a switching control circuit configured to control the air conditioner to switch to a heating mode in response to determining that the temperature difference between the current indoor coil temperature and the target indoor coil dew point temperature is less than the first preset temperature difference until the temperature difference between the current indoor temperature and the set temperature is located in the first preset temperature difference interval.

8. An air conditioner characterized by comprising: comprising: a compressor; an indoor fan; a memory storing a computer program; a processor, the computer program being executed by the processor to implement the cooling and dehumidifying control method of any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, a computer program stored thereon, the computer program being loaded by a processor to perform the steps in the cooling and dehumidifying control method of any one of claims 1 to 6.

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