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

Abstract

The embodiment of the invention provides a refrigeration and dehumidification control method and device, an air conditioner and a computer readable storage medium, and the refrigeration and dehumidification control method comprises the steps that in response to a received refrigeration and dehumidification instruction, the air conditioner is controlled to operate in a refrigeration and dehumidification mode; determining a target inner disc dew point temperature according to the set temperature; whether the temperature difference between the current indoor coil pipe temperature and the target inner coil dew point temperature is smaller than a first preset temperature difference or not is determined; and in response to the fact that the temperature difference between the current indoor coil pipe temperature and the target inner coil dew point temperature is smaller than the first preset temperature difference, the air conditioner is controlled to be switched to a heating mode till the temperature difference between the current indoor temperature and the set temperature is within the first preset temperature difference interval.

Description

Technical Field

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

[0002] In the related art, some air conditioners are equipped with humidity sensors, which can monitor and control indoor humidity more accurately and achieve better dehumidification effect, but the device cost is relatively high. Some air conditioners are not equipped with humidity sensors, which may cause problems such as insufficient dehumidification and excessive dehumidification during dehumidification, resulting in poor indoor environmental comfort. Summary of the invention

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

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

[0005] In some embodiments, controlling the air conditioner to operate in a cooling and dehumidification mode includes: controlling the air conditioner to operate with cooling operating parameters; in response to the air conditioner operating with cooling operating parameters for a first preset time, determining whether the 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 operations: controlling the compressor to reduce the frequency to a first dehumidification frequency and controlling the indoor fan to decelerate to a first dehumidification 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 dehumidification frequency and controlling the indoor fan to accelerate to a second dehumidification speed, the first dehumidification frequency is less than the second dehumidification frequency, and the first dehumidification speed is greater than the second dehumidification speed; the minimum value of the first preset temperature difference interval is 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 an air guide mechanism, and the air guide mechanism is movably arranged at the indoor air outlet; the dehumidification operation includes: when controlling the compressor to reduce the frequency to the first dehumidification frequency and controlling the indoor fan to slow down to the first dehumidification speed, controlling the air guide mechanism to move to the minimum air outlet angle.

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

[0008] In some embodiments, controlling the air conditioner to operate with cooling operation parameters includes: obtaining the current outdoor temperature and the set temperature; determining the cooling operation frequency of the compressor and the 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 an air guide mechanism, and the air guide mechanism is movably arranged at the indoor air outlet; controlling the air conditioner to operate with cooling operation parameters includes: controlling the air guide mechanism to move to a maximum air outlet angle.

[0010] In some embodiments, after determining whether the temperature difference between the current indoor temperature and the set temperature is within a second preset temperature difference interval, the air conditioner is controlled to operate in a cooling and dehumidification mode, including: 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, the air conditioner is controlled 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 an air guide mechanism, and the air guide mechanism is movably arranged at the indoor air outlet; after determining whether the temperature difference between the current indoor temperature and the set temperature is within a second preset temperature difference range, the air conditioner is controlled to operate in a cooling and dehumidification mode, including: 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 range, controlling the air guide mechanism to move to a maximum air outlet angle.

[0012] In a second aspect, an embodiment of the present application provides a refrigeration and dehumidification control device for controlling an air conditioner, wherein the air conditioner includes a compressor and an indoor fan, and the refrigeration and dehumidification control device includes: 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 inner disk dew point temperature according to a set temperature; a temperature difference comparison circuit, configured to determine whether the temperature difference between a current indoor coil temperature and the target inner disk 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 inner disk dew point temperature is less than a first preset temperature difference, until the temperature difference between the current indoor temperature and the set temperature is within a first preset temperature difference range.

[0013] In a third aspect, an embodiment of the present application provides an air conditioner, comprising: a compressor; an indoor fan; a memory storing a computer program; and a processor, wherein when the computer program is executed by the processor, the refrigeration and dehumidification control method as described in any of the above embodiments is implemented.

[0014] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium on which a computer program is stored, and the computer program is loaded by a processor to execute the steps in the refrigeration and dehumidification control method described above.

[0015] The refrigeration and dehumidification control method provided in the embodiment of the present application first controls the air conditioner to operate in a refrigeration and dehumidification mode, so that the indoor temperature and indoor humidity decrease synchronously to perform dehumidification. 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 a first preset temperature difference, the air conditioner is controlled to switch to a heating mode, and the air conditioner is controlled to operate in a heating mode until the temperature difference between the current indoor temperature and the set temperature is within a first preset temperature difference range, so that the indoor temperature is raised to near the set temperature, so that the indoor temperature is accurately adjusted to the set temperature, and the indoor humidity is accurately adjusted to a comfortable humidity corresponding to the set temperature, thereby effectively improving the comfort of the indoor environment. Compared with the related art, when the refrigeration and dehumidification control method provided in the embodiment of the present application is applied to an air conditioner, there is no need to set a humidity sensor on the air conditioner, thereby significantly reducing the hardware cost of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[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 in some embodiments of the present application;

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

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

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

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

[0023] Description of main component symbols:

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

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[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 "suitable for" or "configured to" in this application is meant to be open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps. In addition, the use of "based on" is meant to be open and inclusive, because the process, step, calculation or other action "based on" one or more stated conditions or values ​​can be based on additional conditions or values ​​beyond the stated values ​​in practice.

[0029] In this application, the word "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0030] like Figure 1 As shown, in the first aspect, an embodiment of the present application provides a refrigeration and dehumidification control method for controlling an air conditioner 1. The refrigeration and dehumidification control method includes S10 to S40. In the absence of a humidity sensor, the air conditioner 1 can be controlled to dehumidify the indoor environment more accurately, thereby effectively improving the comfort of the indoor environment at a low cost.

[0031] The air conditioner 1 includes a compressor and an indoor fan. The type of the 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 type with a dehumidification function, which is not limited in the embodiment of the present application. Here, the air conditioner 1 may not be provided with a humidity sensor.

[0032] S10: In response to receiving the cooling and dehumidification instruction, the air conditioner 1 is controlled to operate in the cooling and dehumidification mode.

[0033] Here, the cooling and dehumidification instruction can be input by the user to the air conditioner 1 through a control terminal such as a remote control, a control panel, or an application on a smart terminal, so as to control the air conditioner 1 to reduce the indoor humidity through cooling and dehumidification. When the air conditioner 1 is operated in the cooling and dehumidification mode, the air conditioner 1 dehumidifies the indoor air by cooling it, so that the indoor temperature and the indoor humidity are reduced synchronously to achieve the purpose of dehumidification.

[0034] S20: Determine the target inner disk dew point temperature according to the set temperature.

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

[0036] The specific calculation method for determining the target inner disk dew point temperature according to the set temperature can be determined according to actual needs, and the embodiments of the present application do not limit this. In some examples, the specific calculation method of "determining the target inner disk dew point temperature according to the set temperature" can be predetermined, for example, a specific calculation method such as a calculation equation, a mapping relationship between the set temperature and the target inner disk dew point temperature can be established in advance, and the specific calculation method is pre-set in the control system of the air conditioner 1. In this way, according to the acquired set temperature, the target inner disk dew point temperature corresponding to the set temperature can be determined.

[0037] Exemplarily, the target inner disk dew point temperature can be determined according to the set temperature and the set humidity. Here, the set humidity can be input to the air conditioner 1 by the user through a control terminal such as a remote control, a control panel, an application on an intelligent terminal, etc., which is the target humidity that the user intends to achieve for the indoor environment, that is, the user's comfortable humidity; or, the set humidity can also be pre-set in the air conditioner 1 as a preset value or a series of preset values, and can be continuously updated according to the actual operating conditions of the air conditioner 1, which is the user's comfortable humidity or habitual humidity. Furthermore, the specific calculation method of "determining the target inner disk dew point temperature according to the set temperature and the set humidity" can be predetermined, for example, a specific calculation method such as a calculation equation, a mapping relationship between the set temperature-set humidity and the target inner disk dew point temperature can be pre-established, and the specific calculation method can be pre-set in the control system of the air conditioner 1. In this way, according to the acquired set temperature and set humidity, the target inner disk dew point temperature corresponding to the set temperature-set humidity can be determined.

[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 installed on the indoor coil; the first preset temperature difference can be pre-set in the control system of the air conditioner 1 as a judgment mark of the degree of proximity between the current indoor humidity and the target humidity, and the target humidity is the comfortable humidity expected to be achieved when the air conditioner 1 performs cooling and dehumidification. Furthermore, the temperature difference between the current indoor coil temperature and the target inner coil dew point temperature can be calculated, and the temperature difference can be compared with the first preset temperature difference. The specific value of the first preset temperature difference can be determined according to actual needs, and the embodiment of the present application does not limit this.

[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 range.

[0041] When it is determined that the temperature difference between the current indoor coil temperature and the target inner 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 within the 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 dehumidifying, and the air conditioner 1 can be controlled to switch to the heating mode to increase the indoor temperature to the set temperature or near the set temperature to avoid the indoor temperature being too low and the user discomfort caused by it.

[0042] Here, the current indoor temperature can be measured in real time by a temperature sensor disposed 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 degree of 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 means that the current indoor temperature and the set temperature are equal or relatively close and are within the user's target temperature range, 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, and the embodiment of the present application does not limit this. In some examples, 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 is less than 0°C, and the third preset temperature is greater than 0°C; illustratively, the absolute values ​​of the second preset temperature and the third preset temperature are equal, and the absolute value range can be 0.5 to 2°C, for example, 0.5°C, 1°C, 1.5°C or 2°C.

[0044] The refrigeration and dehumidification control method provided in the embodiment of the present application first controls the air conditioner 1 to operate in the refrigeration and dehumidification mode, so that the indoor temperature and the indoor humidity are synchronously reduced to perform dehumidification. 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 range, 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, thereby effectively improving the comfort of the indoor environment. Compared with the related art, when the refrigeration and dehumidification control method provided in the embodiment of the present application is applied to the air conditioner 1, there is no need to set a humidity sensor on the air conditioner 1, thereby significantly reducing the hardware cost of the air conditioner 1.

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

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

[0047] Here, the cooling operation parameters are operation parameters for controlling the air conditioner 1 to achieve a cooling effect. By controlling the air conditioner 1 to operate with the cooling operation parameters, the indoor temperature can be quickly reduced 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: Obtain the current outdoor temperature and the set temperature.

[0050] Here, the current outdoor temperature can be measured in real time by a temperature sensor arranged 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 a meteorological measurement unit through a communication network. The embodiment of the present application is not limited to this.

[0051] S112: Determine the cooling operation frequency of the compressor and the cooling operation speed of the indoor fan according to the current outdoor temperature and the set temperature.

[0052] Here, a calculation model between the outdoor temperature-set temperature and the cooling operation frequency of the compressor, and between the outdoor temperature-set temperature and the cooling operation speed of the indoor fan can be established in advance, and the above calculation model can be pre-set in the control system of the air conditioner 1. In this way, the cooling operation frequency of the compressor and the cooling operation speed of the indoor fan can be determined according to the current outdoor temperature, the set temperature and the above calculation model.

[0053] S113: Controlling the compressor to operate at a cooling operation frequency, and controlling the indoor fan to operate at a cooling operation speed.

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

[0055] In some embodiments, the air conditioner 1 has an indoor air outlet and an air guide mechanism, and the air guide mechanism can be 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 operation modes such as swinging and translation can be adopted, and the embodiments of the present application are not limited to this. In some examples, the air guide mechanism may include an air guide plate and a wind sweeping blade mechanism, and the swinging direction of the air guide plate and the swinging direction of the wind sweeping blade mechanism are vertical or inclined at an angle to achieve wind sweeping effects in different directions. Exemplarily, the air guide plate can swing up and down to sweep the wind, and the wind sweeping blade mechanism can swing left and right to sweep the wind; another exemplary embodiment, the air guide plate can swing left and right to sweep the wind, and the wind sweeping blade mechanism can swing up and down to sweep the wind. In some examples, in S11, the air guide mechanism can be controlled to move to a set air outlet angle according to the user's set parameters. In other examples, S11 may include S114.

[0056] S114: Control 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 speed of the indoor fan remains unchanged, the air outlet volume of the indoor air outlet can reach the maximum, so that the indoor temperature can be quickly reduced.

[0058] S12: In response to the air conditioner 1 operating with the cooling operation parameters for a first preset time period, determining whether the temperature difference between the current indoor temperature and the set temperature is within a second preset temperature difference range.

[0059] Here, the first preset duration can be pre-set in the control system of the air conditioner 1, and is used as the lower limit duration when the air conditioner 1 is operated with the cooling operation parameters, that is, the air conditioner 1 is controlled to operate with the cooling operation parameters for at least the first preset duration. At this time, it can be determined whether the temperature difference between the current indoor temperature and the set temperature is within the second preset temperature difference range to determine the degree of proximity 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 may be temperature intervals that do not overlap or only partially overlap, and the embodiment of the present application does not limit this. Exemplarily, the minimum value of the first preset temperature difference interval may be set to be greater than the minimum value of the second preset temperature difference interval. Exemplarily, the first preset temperature difference interval may be a temperature interval greater than the second preset temperature and less than the third preset temperature, the second preset temperature difference interval may be a temperature interval greater than the fourth preset temperature and less than 0°C, the second preset temperature is less than 0°C, the third preset temperature is greater than 0°C, 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, and the embodiment of the present application does not limit this.

[0061] S13: In response to determining that the temperature difference between the current indoor temperature and the set temperature is within the second preset temperature difference range, the following dehumidification operations such as S131 to S133 are performed.

[0062] S131: Control the compressor to reduce frequency to a first dehumidification frequency and control the indoor fan to reduce speed to a first dehumidification speed. Here, the first dehumidification frequency is less than the cooling operation frequency, and the first dehumidification speed is less than the cooling operation speed.

[0063] When it is determined that the temperature difference between the current indoor temperature and the set temperature is within the second preset temperature difference range, it can be determined that the current indoor temperature and the set temperature are equal to or relatively close, and the refrigeration demand for lowering the indoor temperature is relatively small; at this time, the compressor frequency can be controlled to reduce and the indoor fan speed can be controlled to slow down so that the cooling capacity of the indoor heat exchanger is mainly used to dehumidify the indoor air, enhance the dehumidification effect and quickly reduce the indoor humidity, and reduce the cooling effect 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 calculated and determined based on the indoor temperature data and the cooling time. The preset temperature drop rate is used to determine the main performance stage of the air conditioner 1, which can be predetermined based on the experimental data of the air conditioner 1 and pre-set in the control system of the air conditioner 1, and can be corrected and updated based on the actual operation data of the air conditioner 1.

[0066] Here, the main performance stage may include the main cooling performance stage and the main dehumidification performance stage. When the indoor temperature drop rate is greater than or equal to the preset temperature drop rate, it means that the air conditioner 1 is still in the main cooling performance stage with cooling effect as the main effect, 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 means that the air conditioner 1 begins to enter the main dehumidification performance stage with dehumidification effect as the main effect, the air conditioner 1 begins 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 the second dehumidification frequency and the indoor fan is controlled to accelerate to the 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 means that the air conditioner 1 begins to enter the main dehumidification efficiency stage with dehumidification effect as the main factor, the air conditioner 1 begins 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 and increase the latent heat exchange of the indoor heat exchanger. At the same time, the indoor fan can be controlled to accelerate to increase the air exchange volume and increase the dehumidification volume, 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 the embodiment of the present application does not limit this; for example, the second dehumidification frequency can be less than the refrigeration operation frequency. The specific values ​​of the first dehumidification speed and the second dehumidification speed can be determined according to actual needs, and the embodiment of the present application does not limit this; for example, the second dehumidification speed can be a medium speed gear, or an average of an upper speed limit and a lower speed limit, so that the indoor fan runs at a medium speed, so that the indoor air volume is maintained at a medium air volume and has 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 stage, and the air conditioner 1 can be controlled to operate with matching operating parameters in different main performance stages, so as to exert better cooling and cooling effects in the main cooling performance stage and better cooling and dehumidification effects in the main dehumidification performance stage, thereby quickly and accurately achieving the dual purposes of temperature and humidity control.

[0071] In some examples, the air conditioner 1 has the indoor air outlet and air guide mechanism as described above. Figure 4 As shown, the above dehumidification operation may 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 decelerate to the first dehumidification speed, the air guide mechanism is controlled to move to the minimum air outlet angle.

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

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

[0075] S133': In response to determining that the indoor temperature drop rate is less than a preset temperature drop rate, the air guide mechanism is controlled to move to a 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 speed, the air 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] like Figure 5 As shown, in some examples, after S12 , S10 may include S14 .

[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 guide mechanism to move to a maximum air outlet angle.

[0079] In S11, the air guide mechanism can be controlled to move to the set air outlet angle according to the user's set parameters. 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 higher than the set temperature to a large extent. At this time, the compressor can be controlled to continue to operate at the cooling operation frequency and the indoor fan can be controlled to continue to operate at the cooling operation speed. At the same time, the air guide mechanism is controlled to move to the maximum air outlet angle to enhance the cooling and cooling effect, so that the indoor temperature is quickly reduced to the set temperature or near the set temperature.

[0080] In some embodiments, after S12, S10 may include S15.

[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, 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 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, that is, it is lower than the set temperature to a large extent. At this time, it is necessary to control the air conditioner 1 to operate in the heating mode so that the indoor temperature rises rapidly 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-mentioned dehumidification operation. In this way, it is possible to avoid refrigeration and dehumidification when the indoor temperature is too low, and avoid the indoor environment being too cold and causing obvious discomfort to the user.

[0083] In the second aspect, an embodiment of the present application provides a refrigeration and dehumidification control device for controlling the above-mentioned air conditioner 1, and the refrigeration and dehumidification control device includes: 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 the target inner disk 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 inner disk dew point temperature is less than a first preset temperature difference; a switching control circuit, configured to control the air conditioner 1 to switch to the heating mode in response to determining that the temperature difference between the current indoor coil temperature and the target inner disk 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 within the first preset temperature difference range.

[0084] like Figure 6 As shown, in the third aspect, the embodiment of the present application provides an air conditioner 1, which includes a compressor, an indoor fan, a processor 10 and a memory 20, and the memory 20 stores a computer program, and when the computer program is executed by the processor 10, the refrigeration and dehumidification control method provided in any of the above embodiments is implemented. The type of the 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, and other air conditioner types with a dehumidification function, which is not limited in the embodiment of the present application. Here, the air conditioner 1 may 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 capabilities. The above-mentioned processor 10 can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc., which can be an X86 architecture or an ARM architecture.

[0086] The memory 20 may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but 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 (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronously linked dynamic random access memory (SLDRAM), and direct memory bus random access memory (DRRAM). It should be noted that the memory 20 of the method described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0087] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. The computer program is loaded by the processor 10 to execute the steps in the control method of any of the above embodiments.

[0088] Exemplarily, the above-mentioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or magnetic tapes, etc.), optical disks (e.g., CDs (Compact Disks), DVDs (Digital Versatile Disks), etc.), smart cards and flash memory devices (e.g., EPROMs (Erasable Programmable Read-Only Memory), cards, sticks or key drives, etc.). The various computer-readable storage media described in the embodiments of the present application may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and / or carrying instructions and / or data.

[0089] The above is a detailed introduction to a refrigeration and dehumidification control method, device, air conditioner and computer-readable storage medium provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A refrigeration and dehumidification control method, characterized in that: Used to control an air conditioner, the air conditioner includes a compressor and an indoor fan, and the refrigeration and dehumidification control method includes: In response to receiving a cooling and dehumidification instruction, controlling the air conditioner to operate in a cooling and dehumidification mode; Determine the target inner disk dew point temperature according to the set temperature; Determining 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; 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 a first preset temperature difference, the air conditioner is controlled to switch to a heating mode until the temperature difference between the current indoor temperature and the set temperature is within a first preset temperature difference range.

2. The refrigeration and dehumidification control method according to claim 1, characterized in that: Controlling the air conditioner to operate in a cooling and dehumidification mode comprises: Controlling the air conditioner to operate with cooling operation parameters; In response to the air conditioner operating with cooling operation parameters for a first preset time period, determining whether the 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, the following dehumidification operation is performed: Controlling the compressor to reduce frequency to a first dehumidification frequency and controlling the indoor fan to reduce speed to a first dehumidification speed; Determine 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 a preset temperature drop rate, controlling the compressor to increase the frequency to a second dehumidification frequency and controlling the indoor fan to accelerate to a second dehumidification speed, wherein the first dehumidification frequency is less than the second dehumidification frequency, and the first dehumidification speed is greater than the second dehumidification speed; The minimum value of the first preset temperature difference interval is greater than the minimum value of the second preset temperature difference interval.

3. The refrigeration and dehumidification control method according to claim 2, characterized in that: The air conditioner has an indoor air outlet and an air guide mechanism, and the air guide mechanism is movably arranged at the indoor air outlet; the dehumidification operation includes: When the compressor is controlled to reduce the frequency to the first dehumidification frequency and the indoor fan is controlled to decelerate to the first dehumidification speed, the air guide mechanism is controlled to move to the minimum air outlet angle.

4. The refrigeration and dehumidification control method according to claim 2, characterized in that: The air conditioner has an indoor air outlet and an air guide mechanism, and the air guide mechanism is movably arranged at the indoor air outlet; the dehumidification operation includes: In response to determining that the indoor temperature drop rate is less than a preset temperature drop rate, the air guide mechanism is controlled to move to a maximum air outlet angle.

5. The refrigeration and dehumidification control method according to claim 2, characterized in that: Controlling the air conditioner to operate with cooling operation parameters, comprising: Get the current outdoor temperature and set temperature; Determining the cooling operation frequency of the compressor and the cooling operation speed of the indoor fan according to the current outdoor temperature and the set temperature; The compressor is controlled to operate at the cooling operation frequency, and the indoor fan is controlled to operate at the cooling operation speed.

6. The refrigeration and dehumidification control method according to claim 2, characterized in that: The air conditioner has an indoor air outlet and an air guide mechanism, and the air guide mechanism is movably arranged at the indoor air outlet; After determining whether the temperature difference between the current indoor temperature and the set temperature is within a second preset temperature difference interval, controlling the air conditioner to operate in a cooling and dehumidification mode includes: 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, the air guide mechanism is controlled to move to a maximum air outlet angle.

7. The refrigeration and dehumidification control method according to claim 2, characterized in that: After determining whether the temperature difference between the current indoor temperature and the set temperature is within a second preset temperature difference interval, controlling the air conditioner to operate in a cooling and dehumidification mode includes: 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, the air conditioner is controlled 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.

8. A refrigeration and dehumidification control device, characterized in that: Used to control an air conditioner, the air conditioner includes a compressor and an indoor fan, and the refrigeration and dehumidification control device includes: a dehumidification control circuit configured to control the air conditioner to operate in a cooling and dehumidification mode in response to receiving a cooling and dehumidification instruction; a dew point temperature calculation circuit configured to determine a target inner pan dew point temperature according to a 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; The switching control circuit is 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 a first preset temperature difference, until the temperature difference between the current indoor temperature and the set temperature is within a first preset temperature difference range.

9. An air conditioner, characterized in that: include: compressor; Indoor fan; a memory storing a computer program; A processor, wherein when the computer program is executed by the processor, the refrigeration and dehumidification control method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in the refrigeration and dehumidification control method according to any one of claims 1 to 7.

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