Air conditioner, dehumidification method thereof, and computer-readable storage medium

Abstract

The present application provides an air conditioner, a dehumidification method thereof, and a computer-readable storage medium. The method comprises: determining the superheat of the evaporator's inner disk, which is associated with the evaporator's inner coil temperature; and controlling the opening of a first expansion valve based on the inner disk superheat to change the evaporator's inner coil temperature for dehumidification. The present application controls the opening of the first expansion valve based on the inner disk superheat. Changing the opening of the first expansion valve changes the flow rate of refrigerant flowing into the evaporator. Refrigerant with different flow rates evaporates in the evaporator, removing different amounts of heat, thereby directly changing the evaporator's inner coil temperature. This allows for direct control of the inner coil temperature during the dehumidification process, improving the air conditioner's dehumidification performance and user experience.

Description

Technical Field

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

[0002] Currently, air conditioners generally feature dehumidification and ventilation modes in addition to conventional cooling and heating modes. Dehumidification mode uses a similar control method to cooling mode, varying the compressor frequency and indoor fan speed to achieve dehumidification. For example, when the indoor humidity exceeds the target humidity, the compressor frequency is increased to reduce the humidity and achieve dehumidification. However, this dehumidification control scheme, which relies on varying the compressor frequency, cannot directly control the internal coil temperature, resulting in suboptimal dehumidification results. Summary of the Invention

[0003] The present application provides an air conditioner and a dehumidification method thereof, and a computer-readable storage medium, aiming to solve the technical problem of unsatisfactory dehumidification effect during the current dehumidification process of the air conditioner.

[0004] In a first aspect, the present application provides a method for dehumidifying an air conditioner, wherein the air conditioner includes an evaporator and a condenser, and a first expansion valve is provided on a pipeline connecting an evaporator inlet and a condenser outlet. The method includes:

[0005] Determine the evaporator's inner disk superheat, which is related to the evaporator's inner coil temperature;

[0006] According to the superheat of the inner coil, the opening of the first expansion valve is controlled to change the inner coil temperature of the evaporator for dehumidification.

[0007] In some embodiments, the step of determining the inner disk superheat of the evaporator includes:

[0008] Get the inner coil temperature of the evaporator and the indoor dew point temperature;

[0009] Determine the inner coil superheat based on the inner coil temperature and dew point temperature.

[0010] In some embodiments, the step of determining the inner disk superheat of the evaporator includes:

[0011] Obtain the internal coil temperature of the evaporator and the low-pressure saturation temperature of the refrigerant;

[0012] Determine the inner coil superheat based on the inner coil temperature and low pressure saturation temperature.

[0013] In some embodiments, the step of determining the inner disk superheat of the evaporator includes:

[0014] Obtain the internal coil temperature of the evaporator and the anti-freeze protection temperature of the refrigerant;

[0015] Determine the inner coil superheat based on the inner coil temperature and anti-freeze protection temperature.

[0016] In some embodiments, the step of controlling the opening of the first expansion valve according to the inner disk superheat includes:

[0017] When the inner disk superheat is less than a first preset value, reducing the opening of the first expansion valve;

[0018] When the inner disk superheat is greater than a second preset value, increasing the opening of the first expansion valve;

[0019] When the inner disk superheat is greater than or equal to the first preset value and less than or equal to the second preset value, the opening of the first expansion valve is kept unchanged.

[0020] In some embodiments, a compressor and a second expansion valve adjacent to the evaporator outlet are provided on a pipeline connecting the evaporator outlet and the condenser inlet, and the method further comprises:

[0021] Determine the compressor discharge superheat;

[0022] The opening of the second expansion valve is controlled according to the exhaust superheat of the compressor.

[0023] In some embodiments, the step of determining the discharge superheat of the compressor includes:

[0024] Get the exhaust temperature and pressure of the compressor;

[0025] Determine the corresponding exhaust saturation temperature according to the exhaust pressure;

[0026] The exhaust gas superheat is determined based on the exhaust gas temperature and exhaust gas saturation temperature.

[0027] In some embodiments, the step of controlling the opening of the second expansion valve according to the exhaust gas superheat of the compressor includes:

[0028] When the exhaust gas superheat is less than a third preset value, reducing the opening of the second expansion valve;

[0029] When the exhaust gas superheat is greater than a fourth preset value, increasing the opening of the second expansion valve;

[0030] When the exhaust gas superheat is greater than or equal to the third preset value and less than or equal to the fourth preset value, the opening degree of the second expansion valve is kept unchanged.

[0031] In a second aspect, the present application provides an air conditioner, comprising:

[0032] one or more processors;

[0033] Memory; and

[0034] One or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the dehumidification method according to the first aspect.

[0035] In a third aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which is loaded by a processor to execute the steps in the dehumidification method as described in the first aspect.

[0036] The present application controls the opening size of the first expansion valve by the superheat of the inner coil. When the opening size of the first expansion valve is changed, the flow rate of the refrigerant flowing into the evaporator is changed. Refrigerants with different flow rates evaporate in the evaporator and take away different amounts of heat, thereby directly changing the inner coil temperature of the evaporator. Direct control of the inner coil temperature is achieved during the dehumidification process, thereby improving the dehumidification effect of the air conditioner and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 This is a structural diagram of an air conditioner provided in an embodiment of the present application;

[0039] Figure 2 This is a flow chart of a method for dehumidifying an air conditioner provided in an embodiment of the present application;

[0040] Figure 3 This is a schematic diagram of a flow chart for controlling the opening of the second expansion valve provided in an embodiment of the present application;

[0041] Figure 4 This is a schematic diagram of a process for determining exhaust superheat provided in an embodiment of the present application;

[0042] Figure 5 This is a structural diagram of the air conditioner provided in an embodiment of the present application.

[0043] Among them, 10 evaporator, 20 condenser, 30 first expansion valve, 40 compressor, 50 second expansion valve, 60 four-way valve, 70 temperature and humidity sensor, 80 suction temperature sensor, 90 low pressure sensor. DETAILED DESCRIPTION

[0044] 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0045] In the description of the present invention, 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, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. 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 the indicated technical features. 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 invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0046] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to make and use the invention. In the following description, details are listed for the purpose of explanation. It should be understood that one of ordinary skill in the art will recognize that the invention can be practiced without these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0047] The embodiments of the present application provide an air conditioner, a dehumidification method thereof, and a computer-readable storage medium, which are described in detail below.

[0048] First, see Figure 1 , Figure 1 A structural schematic diagram of an air conditioner in an embodiment of the present application is shown, wherein the air conditioner includes an evaporator 10, a condenser 20, and a compressor 40. A first expansion valve 30 is provided on the pipeline connecting the inlet of the evaporator 10 and the outlet of the condenser 20. The arrows shown in the figure indicate the flow direction of the refrigerant in the cooling mode.

[0049] Among them, the evaporator 10 and the condenser 20 are located indoors and outdoors respectively. When the air conditioner is cooling, the refrigerant flowing in the evaporator 10 evaporates and absorbs heat, thereby lowering the temperature of the inner coil and performing heat exchange with the indoor air. The refrigerant flowing in the condenser 20 liquefies and releases heat, thereby raising the temperature of the outer coil and performing heat exchange with the outdoor air. When the air conditioner is heating, the refrigerant flowing in the evaporator 10 liquefies and releases heat, thereby raising the temperature of the inner coil and heating the indoor air. The refrigerant flowing in the condenser 20 evaporates and absorbs heat, thereby lowering the temperature of the outer coil and performing heat exchange with the outdoor air.

[0050] Compressor 40 compresses and drives refrigerant in the air conditioner pipeline, extracting the refrigerant from the low-pressure area and sending it to the high-pressure area for cooling and condensation after compression. When heating is required, the heat is dissipated to the indoor side through evaporator 10 and condenser 20, and when cooling is required, the heat is dissipated to the outdoor side. For example, compressor 40 can be a reciprocating compressor or a rotary compressor, such as a screw compressor or a centrifugal compressor.

[0051] The first expansion valve 30 is used to control the temperature of the inner coil of the evaporator 10 according to the superheat of the inner coil. When the opening size of the first expansion valve 30 is changed, the flow rate of the refrigerant flowing into the evaporator 10 is changed. Refrigerant with different flow rates evaporates in the evaporator 10 and takes away different amounts of heat, thereby directly changing the inner coil temperature of the evaporator 10. Direct control of the inner coil temperature is achieved during the dehumidification process, thereby improving the dehumidification effect of the air conditioner and user experience.

[0052] It should be noted that the internal disk superheat can be calculated in a variety of ways. For example, the difference between the internal coil temperature and the indoor dew point temperature is used as the internal disk superheat; for another example, the difference between the internal coil temperature and the low-pressure saturation temperature of the refrigerant is used as the internal disk superheat; for another example, the difference between the internal coil temperature and the anti-freeze protection temperature is used as the internal disk superheat.

[0053] Since the first expansion valve 30 directly controls the temperature of the inner coil, although it is beneficial for air dehumidification, the inner coil temperature may be too low, resulting in incomplete evaporation of the refrigerant, causing the compressor 40 to suck in liquid, which eventually leads to liquid hammer in the compressor 40 and shortens its service life.

[0054] To this end, in some embodiments of the present application, the air conditioner further includes a second expansion valve 50, which is disposed adjacent to the outlet of the evaporator 10. The second expansion valve 50 changes its opening according to the exhaust gas superheat of the compressor 40, where the exhaust gas superheat is calculated as the difference between the saturation temperature corresponding to the exhaust gas pressure of the compressor 40 and the exhaust gas temperature. For example, when the exhaust gas superheat of the compressor 40 is too low, indicating that the refrigerant discharged from the compressor 40 may contain liquid, the refrigerant flow rate is reduced by decreasing the opening of the second expansion valve 50, thereby extending the time the refrigerant remains in the evaporator 10, thereby preventing the refrigerant from being completely evaporated and containing liquid.

[0055] It can be understood that the above description of the air conditioner is only for the purpose of clearly explaining the verification process of this application. In fact, the air conditioner may also include other components. For example, the air conditioner may also include a liquid storage tank for storing refrigerant, a four-way valve 60 for controlling the air conditioner to switch between heating and cooling modes, etc.; for another example, the air conditioner may also include detection components such as a temperature and humidity sensor 70, an intake temperature sensor 80, and a low pressure sensor 90.

[0056] Continue reading Figure 2 , Figure 2 A flow chart of a dehumidification method for an air conditioner according to an embodiment of the present application is shown. The dehumidification method uses an air conditioner according to any of the above embodiments, wherein the dehumidification method for an air conditioner includes:

[0057] Step S210, determining the superheat of the inner disk of the evaporator 10;

[0058] Specifically, the inner disk superheat refers to the superheat associated with the inner coil temperature of the evaporator 10. In some embodiments of the present application, the step of determining the inner disk superheat of the evaporator 10 includes:

[0059] Step S211, obtaining the inner coil temperature of the evaporator 10 and the indoor dew point temperature;

[0060] Determine the inner coil superheat based on the inner coil temperature and dew point temperature.

[0061] The inner coil temperature can be measured by the inner coil temperature sensor, and the dew point temperature can be measured by the temperature and humidity sensor 70. After the inner coil temperature and dew point temperature are obtained, the difference between the inner coil temperature and the dew point temperature can be used as the inner coil superheat. For example, if the inner coil temperature is 10°C and the dew point temperature is 19°C, the inner coil superheat is 9°C.

[0062] It should be noted that since the inner disk superheat is related to the inner coil temperature and the dew point temperature, and the dew point temperature is usually close to the indoor temperature, dehumidification can be achieved when the inner coil temperature is slightly lower than the dew point temperature. Therefore, dehumidification is performed using the inner disk superheat related to the inner coil temperature and the dew point temperature. This dehumidification mode can achieve a constant indoor temperature dehumidification mode while ensuring the dehumidification effect, avoiding a significant drop in indoor temperature.

[0063] In some embodiments of the present application, the step of determining the superheat of the inner disk of the evaporator 10 includes:

[0064] Step S212, obtaining the inner coil temperature of the evaporator 10 and the low-pressure saturation temperature of the refrigerant;

[0065] Determine the inner coil superheat based on the inner coil temperature and low pressure saturation temperature.

[0066] The refrigerant's low-pressure saturation temperature can be obtained by querying a data table after detecting the pressure of the evaporator 10. Once the inner coil temperature and the low-pressure saturation temperature are obtained, the difference between the inner coil temperature and the low-pressure saturation temperature can be used as the inner coil superheat. For example, if the inner coil temperature is 10°C and the low-pressure saturation temperature is 5°C, the inner coil superheat is 5°C.

[0067] It should be noted that since the inner disk superheat is related to the inner coil temperature and the low-pressure saturation temperature of the refrigerant, and the low-pressure saturation temperature of the refrigerant usually has a large temperature difference from the indoor temperature, when the inner disk superheat is constant, the inner coil temperature and the indoor temperature also have a large temperature difference. Therefore, using the inner disk superheat associated with the inner coil temperature and the low-pressure saturation temperature for dehumidification can greatly reduce the temperature of the inner coil, thereby increasing the dehumidification speed and realizing a rapid dehumidification mode.

[0068] In some embodiments of the present application, the step of determining the superheat of the inner disk of the evaporator 10 includes:

[0069] Step S213, obtaining the inner coil temperature of the evaporator 10 and the anti-freeze protection temperature of the refrigerant;

[0070] Determine the inner coil superheat based on the inner coil temperature and anti-freeze protection temperature.

[0071] The refrigerant antifreeze protection temperature can be obtained by querying the refrigerant parameters in the storage device. Once the internal coil temperature and the antifreeze protection temperature are obtained, the difference between the internal coil temperature and the antifreeze protection temperature can be used as the internal coil superheat. For example, if the internal coil temperature is 10°C and the antifreeze protection temperature is -5°C, the internal coil superheat is 15°C.

[0072] It should be noted that since the inner disk superheat is related to the inner coil temperature and the anti-freeze protection temperature of the refrigerant, and the anti-freeze protection temperature of the refrigerant is usually much lower than the indoor temperature, when the inner disk superheat is constant, the inner coil temperature is also much lower than the indoor temperature. Therefore, using the inner disk superheat related to the inner coil temperature and the anti-freeze protection temperature for dehumidification can greatly reduce the temperature of the inner coil, thereby increasing the dehumidification speed and achieving an extremely fast dehumidification mode.

[0073] In step S220 , the opening of the first expansion valve 30 is controlled according to the inner coil superheat, so as to change the inner coil temperature of the evaporator 10 for dehumidification.

[0074] After determining the inner coil superheat, the opening of the first expansion valve 30 can be controlled to change the inner coil temperature of the evaporator 10 for dehumidification. In some embodiments of the present application, the step of controlling the opening of the first expansion valve 30 based on the inner coil superheat includes:

[0075] Step S221, when the inner disk superheat is less than a first preset value, reducing the opening of the first expansion valve 30;

[0076] Step S222: when the inner disk superheat is greater than a second preset value, increasing the opening of the first expansion valve 30;

[0077] Step S223: When the inner disk superheat is greater than or equal to the first preset value and less than or equal to the second preset value, the opening of the first expansion valve 30 is kept unchanged.

[0078] The first preset value and the second preset value can be set based on the experience of those skilled in the art, or can be determined based on a large amount of experimental test data, and are not limited thereto. In some embodiments of the present application, the opening change value of the first expansion valve 30 can be calculated based on the inner disk superheat, the first preset value, and / or the second preset value. For example, the opening change value of the first expansion valve 30 can be calculated according to the following formula:

[0079] D1=S-(S1+S2) / 2

[0080] Where D1 is the change in the opening of the first expansion valve 30, S is the internal disk superheat, S1 is a first preset value, and S2 is a second preset value. It will be appreciated that when D1 is less than 0, the opening of the first expansion valve 30 decreases by the absolute value of D1; when D1 is greater than 0, the opening of the first expansion valve 30 increases by the absolute value of D1. In some embodiments of the present application, the opening of the first expansion valve 30 is adjusted every 90 seconds, within an adjustment range of a minimum opening of 88° to 480°.

[0081] It can be understood that for some embodiments of the present application, such as embodiments in which the inner disk superheat is associated with the inner coil temperature and the dew point temperature, and embodiments in which the inner disk superheat is associated with the inner coil temperature and the low-pressure saturation temperature of the refrigerant, and embodiments in which the inner disk superheat is associated with the inner coil temperature and the anti-freeze protection temperature of the refrigerant, the first preset values ​​and the second preset values ​​of the above different embodiments are inconsistent, so as to adapt to the constant temperature dehumidification mode, the rapid dehumidification mode and the extreme speed dehumidification mode and provide multiple dehumidification modes.

[0082] The present application controls the opening size of the first expansion valve 30 by the superheat of the inner disk. When the opening size of the first expansion valve 30 is changed, the flow rate of the refrigerant flowing into the evaporator 10 is changed. Refrigerants of different flow rates evaporate in the evaporator 10 and take away different amounts of heat, thereby directly changing the inner coil temperature of the evaporator 10. Since the inner disk superheat is related to the inner coil temperature, direct control of the inner coil temperature is achieved during the dehumidification process, thereby improving the dehumidification effect of the air conditioner and the user experience.

[0083] Since the first expansion valve 30 directly controls the temperature of the inner coil, although it is beneficial for air dehumidification, the inner coil temperature may be too low, resulting in incomplete evaporation of the refrigerant. For example, in embodiments where the inner coil superheat is associated with the inner coil temperature and the dew point temperature, or in embodiments where the inner coil superheat is associated with the inner coil temperature and the anti-freeze protection temperature of the refrigerant, the compressor 40 may inhale liquid, ultimately causing liquid hammer in the compressor 40 and shortening its service life.

[0084] For this purpose, see Figure 3 , Figure 3 A schematic diagram of a flow chart for controlling the opening of the second expansion valve 50 in an embodiment of the present application is shown. In some embodiments of the present application, the air conditioner further includes a second expansion valve 50, which is disposed adjacent to the outlet of the evaporator 10. The air conditioner dehumidification method further includes:

[0085] Step S310, determining the exhaust gas superheat of the compressor 40;

[0086] The exhaust superheat of the compressor 40 refers to the superheat associated with the exhaust temperature of the compressor 40. Figure 4 , Figure 4 A schematic diagram of a process for determining exhaust superheat in an embodiment of the present application is shown. The steps of determining exhaust superheat include:

[0087] Step S410, obtaining the exhaust temperature and exhaust pressure of the compressor 40;

[0088] Step S420, determining the corresponding exhaust saturation temperature according to the exhaust pressure;

[0089] Step S430: determining the exhaust gas superheat according to the exhaust gas temperature and the exhaust gas saturation temperature.

[0090] The exhaust temperature of compressor 40 can be measured by suction temperature sensor 80, the exhaust pressure of compressor 40 can be measured by low-pressure sensor 90, and the exhaust saturation temperature can be obtained by querying the corresponding data table based on the exhaust pressure. After obtaining the exhaust temperature and exhaust saturation temperature, the difference between the exhaust temperature and the exhaust saturation temperature can be used as the exhaust superheat. For example, if the exhaust temperature of compressor 40 is 40°C and the exhaust saturation temperature of compressor 40 is 35°C, the exhaust superheat is 5°C.

[0091] In step S320 , the opening of the second expansion valve 50 is controlled according to the exhaust gas superheat of the compressor 40 .

[0092] After determining the exhaust superheat of the compressor 40, the opening of the second expansion valve 50 can be controlled. In some embodiments of the present application, the step of controlling the opening of the second expansion valve 50 according to the exhaust superheat of the compressor 40 includes:

[0093] Step S321, when the exhaust gas superheat is less than a third preset value, reducing the opening of the second expansion valve 50;

[0094] Step S322, when the exhaust gas superheat is greater than a fourth preset value, increasing the opening of the second expansion valve 50;

[0095] Step S323: When the exhaust gas superheat is greater than or equal to the third preset value and less than or equal to the fourth preset value, the opening of the second expansion valve 50 is kept unchanged.

[0096] Among them, the third preset value and the fourth preset value can be set according to the experience of those skilled in the art, or can be determined based on a large amount of experimental test data, and there is no limitation on this. When the exhaust superheat of the compressor 40 is too small (for example, less than the third preset value), it means that the refrigerant discharged from the compressor 40 may contain liquid. By reducing the opening of the second expansion valve 50 to reduce the flow rate of the refrigerant, the time the refrigerant stays in the evaporator 10 is extended, thereby avoiding the phenomenon that the refrigerant is not completely evaporated and liquid exists; and when the exhaust superheat of the compressor 40 is too large (for example, greater than the fourth preset value), the opening of the second expansion valve 50 can be appropriately increased, thereby accelerating the refrigerant circulation and improving the refrigeration and dehumidification effect.

[0097] In some embodiments of the present application, the opening change value of the second expansion valve 50 can be calculated based on the exhaust superheat, the third preset value, and / or the fourth preset value. For example, the opening change value of the second expansion valve 50 can be calculated according to the following formula:

[0098] D2=(s-(S3+S4) / 2)*2

[0099] Where D2 is the change in the opening of the second expansion valve 50, s is the exhaust superheat, S1 is the third preset value, and S2 is the fourth preset value. It will be appreciated that when D2 is less than 0, the opening of the second expansion valve 50 decreases by the absolute value of D2; when D2 is greater than 0, the opening of the second expansion valve 50 increases by the absolute value of D2. In some embodiments of the present application, the opening of the second expansion valve 50 is adjusted every 30 seconds, within an adjustment range of a minimum opening of 88° to 480°.

[0100] It is worth noting that the above content about the air conditioner dehumidification method is intended to clearly illustrate the implementation verification process of this application. Those skilled in the art can make equivalent modified designs under the guidance of this application, such as changing the calculation formula corresponding to the opening change value of the first expansion valve 30, or changing the calculation formula corresponding to the opening change value of the second expansion valve 50.

[0101] Furthermore, in order to better implement the dehumidification method in the embodiment of the present application, on the basis of the dehumidification method, the embodiment of the present application also provides an air conditioner, the air conditioner comprising:

[0102] one or more processors;

[0103] Memory; and

[0104] One or more applications, wherein the one or more applications are stored in the memory and configured to cause the processor to execute the steps of the dehumidification method of any one of the above embodiments.

[0105] like Figure 5 As shown, it shows a structural diagram of the air conditioner involved in the embodiment of the present application, specifically:

[0106] The air conditioner may include one or more processors 510 of processing cores and one or more computer-readable storage media memories 520. It will be understood by those skilled in the art that Figure 5 The structure shown in the figure does not constitute a limitation on the dehumidification system, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0107] Processor 510 is the control center of the system, connecting various parts of the system using various interfaces and lines. By running or executing software programs and / or modules stored in memory 520 and accessing data stored in memory 520, it performs various system functions and processes data, thereby monitoring the system as a whole. Optionally, processor 510 may include one or more processing cores; processor 510 may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor. Preferably, processor 510 may integrate an application processor and a modem processor, wherein the application processor primarily processes the operating system, user interface, and application programs, while the modem processor primarily handles wireless communications. It is understood that the modem processor may not be integrated into processor 510.

[0108] The memory 520 can be used to store software programs and modules. The processor 510 executes various functional applications and data processing by running the software programs and modules stored in the memory 520. The memory 520 may mainly include a program storage area and a data storage area. The program storage area may store an operating system, at least one application required for a function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created based on the use of the air conditioner, etc. In addition, the memory 520 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 520 may also include a memory controller to provide the processor 510 with access to the memory 520.

[0109] Although not shown, the air conditioner may further include a display unit, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 510 in the air conditioner will load the executable files corresponding to the processes of one or more application programs into the memory 520 according to the following instructions, and the processor 510 will run the application programs stored in the memory 520 to implement various functions as follows:

[0110] Determining the inner disk superheat of the evaporator 10 , where the inner disk superheat is related to the inner coil temperature of the evaporator 10 ;

[0111] According to the inner coil superheat, the opening degree of the first expansion valve 30 is controlled to change the inner coil temperature of the evaporator 10 for dehumidification.

[0112] To this end, an embodiment of the present invention provides a computer-readable storage medium, which may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. A computer program is stored on the computer-readable storage medium, and the computer program is loaded by a processor to execute the steps of any of the dehumidification methods provided in the embodiments of the present invention. For example, the computer program loaded by the processor may execute the following steps:

[0113] Determining the inner disk superheat of the evaporator 10 , where the inner disk superheat is related to the inner coil temperature of the evaporator 10 ;

[0114] According to the inner coil superheat, the opening degree of the first expansion valve 30 is controlled to change the inner coil temperature of the evaporator 10 for dehumidification.

[0115] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the detailed description of other embodiments above and will not be repeated here.

[0116] The basic concepts have been described above. It will be apparent to those skilled in the art that the detailed disclosure above is merely illustrative and does not limit the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to the present application. Such modifications, improvements, and amendments are suggested in the present application and remain within the spirit and scope of the exemplary embodiments of the present application.

[0117] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0118] Accordingly, various aspects of the present application may be performed entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. The above hardware or software may be referred to as "data blocks," "modules," "engines," "units," "components," or "systems." In addition, various aspects of the present application may be embodied as computer products embodied in one or more computer-readable media, including computer-readable program code.

[0119] A computer storage medium may include a propagated data signal embodying the computer program code, for example, in baseband or as part of a carrier wave. The propagated signal may be in a variety of forms, including electromagnetic, optical, or any suitable combination thereof. A computer storage medium may be any computer-readable medium other than a computer-readable storage medium that can be connected to an instruction execution system, apparatus, or device to communicate, propagate, or transfer the program for use. The program code on the computer storage medium may be transmitted via any suitable medium, including radio, cable, fiber optic cable, RF, or similar media, or any combination of these.

[0120] The computer program code required for the operation of each part of the present application can be written in any one or more programming languages, including object-oriented programming languages ​​such as Java, Scala, Smalltalk, Eiffel, JADE, Emerald, C++, C#, VB.NET, Python, etc., conventional procedural programming languages ​​such as C language, Visual Basic, Fortran 2003, Perl, COBOL 2002, PHP, ABAP, dynamic programming languages ​​such as Python, Ruby and Groovy, or other programming languages. The program code can be run entirely on the user's computer, or as a separate software package on the user's computer, or partly on the user's computer and partly on a remote computer, or entirely on a remote computer or server. In the latter case, the remote computer can be connected to the user's computer through any network form, such as a local area network (LAN) or a wide area network (WAN), or connected to an external computer (e.g., via the Internet), or in a cloud computing environment, or used as a service such as software as a service (SaaS).

[0121] In addition, unless expressly stated in the claims, the order of the processing elements and sequences described in this application, the use of alphanumeric characters, or the use of other names are not intended to limit the order of the processes and methods of this application. Although the above disclosure discusses some of the invention embodiments currently considered useful through various examples, it should be understood that such details are only for illustrative purposes, and the attached claims are not limited to the disclosed embodiments. On the contrary, the claims are intended to cover all modifications and equivalent combinations that are consistent with the essence and scope of the embodiments of this application. For example, although the system components described above can be implemented by hardware devices, they can also be implemented only by software solutions, such as installing the described system on an existing server or mobile device.

[0122] Similarly, it should be noted that, in order to simplify the presentation of this application and thus facilitate understanding of one or more embodiments of the invention, the foregoing descriptions of the embodiments of this application sometimes combine multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, an embodiment may have fewer features than all of the features of a single embodiment disclosed above.

[0123] The above is a detailed introduction to an air conditioner and its dehumidification method, and a computer-readable storage medium provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A dehumidification method for an air conditioner, characterized in that: The air conditioner includes an evaporator and a condenser, a first expansion valve is provided on a pipeline connecting the evaporator inlet and the condenser outlet, and the method includes: determining an inner disk superheat of the evaporator, the inner disk superheat being correlated to an inner coil temperature of the evaporator; According to the inner coil superheat, the opening of the first expansion valve is controlled to change the inner coil temperature of the evaporator for dehumidification; The inner coil superheat is calculated in a variety of ways, including at least one of the following: based on the inner coil temperature and the indoor dew point temperature, based on the inner coil temperature and the low-pressure saturation temperature of the refrigerant, and based on the inner coil temperature and the anti-freeze protection temperature of the refrigerant. Different dehumidification modes are corresponding to the superheat calculated in different ways. The step of controlling the opening of the first expansion valve according to the inner disk superheat comprises: When the inner disk superheat is less than a first preset value, reducing the opening of the first expansion valve; When the inner disk superheat is greater than a second preset value, increasing the opening of the first expansion valve; When the inner disk superheat is greater than or equal to the first preset value and less than or equal to the second preset value, the opening of the first expansion valve is kept unchanged; wherein the opening change value of the first expansion valve is calculated based on the inner disk superheat, the first preset value, and the second preset value: D1=S-(S1+S2) / 2; D1 is the opening change value of the first expansion valve, S is the superheat of the inner disk, S1 is the first preset value, and S2 is the second preset value; A compressor and a second expansion valve adjacent to the evaporator outlet are provided on a pipeline connecting the evaporator outlet and the condenser inlet, and the method further comprises: determining an exhaust superheat of the compressor; The opening of the second expansion valve is controlled according to the exhaust gas superheat of the compressor to prevent the compressor from sucking in liquid and causing liquid hammer.

2. The dehumidification method according to claim 1, wherein: The step of determining the exhaust gas superheat of the compressor comprises: Obtaining the exhaust temperature and exhaust pressure of the compressor; determining a corresponding exhaust saturation temperature according to the exhaust pressure; The exhaust gas superheat is determined according to the exhaust gas temperature and the exhaust gas saturation temperature.

3. The dehumidification method according to claim 2, wherein: The step of controlling the opening of the second expansion valve according to the exhaust gas superheat of the compressor includes: When the exhaust gas superheat is less than a third preset value, reducing the opening of the second expansion valve; When the exhaust gas superheat is greater than a fourth preset value, increasing the opening of the second expansion valve; When the exhaust gas superheat is greater than or equal to the third preset value and less than or equal to a fourth preset value, the opening degree of the second expansion valve is kept unchanged.

4. An air conditioner, characterized in that: include: one or more processors; Memory; as well as One or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the dehumidification method according to any one of claims 1 to 3.

5. 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 dehumidification method according to any one of claims 1 to 3.

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