Dehumidification control method and device, air conditioning system, and storage medium

Abstract

The application relates to the air conditioning technical field and discloses a dehumidification control method. The method is applied to an air conditioning system, the air conditioning system comprises an indoor heat exchanger, a first electronic expansion valve and a second electronic expansion valve; under a refrigeration working condition, refrigerant flows through the first electronic expansion valve, the indoor heat exchanger and the second electronic expansion valve in sequence; the method comprises the following steps: in a dehumidification mode, temperature detection information of the indoor heat exchanger and humidity detection information of the indoor are acquired; the opening degree of the first electronic expansion valve is adjusted according to the temperature detection information; and the opening degree of the second electronic expansion valve is adjusted according to the humidity detection information, so that the evaporation pressure of the indoor heat exchanger meets the humidity adjustment demand of the indoor. The opening degrees of the first electronic expansion valve and the second electronic expansion valve are controlled, the quantifiable control of the dehumidification function in the dehumidification mode is realized, and the adjustment precision of the air conditioning system for the environmental humidity is improved. The application further discloses a dehumidification control device, an air conditioning system and a storage medium.

Description

Technical Field

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

[0002] In recent years, as people's living standards have continued to improve, their demands for indoor environmental comfort have become increasingly higher. To improve indoor comfort, air conditioning is usually installed in homes to regulate indoor temperature and humidity.

[0003] Currently, most air conditioners have a dehumidification mode. Existing dehumidification modes typically control the air conditioner's cooling system to maintain cooling operation and control the indoor unit's fan to run at low speed or stop completely. This type of dehumidification mode can indeed reduce indoor humidity.

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

[0005] In some places with high requirements for environmental humidity, such as antique rooms, rooms for rare animals and plants, medical organ preservation rooms, and high-precision instrument rooms, simply reducing the environmental humidity is not enough to meet the dehumidification and regulation needs of these places. How to achieve quantifiable control of dehumidification has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a dehumidification control method and apparatus, an air conditioning system, and a storage medium to achieve quantifiable control of the air conditioning system in dehumidification mode and improve the accuracy of the air conditioning system in regulating ambient humidity.

[0008] In some embodiments, the dehumidification control method is applied to an air conditioning system, which includes an indoor heat exchanger, a first electronic expansion valve, and a second electronic expansion valve. In cooling mode, the refrigerant flows sequentially through the first electronic expansion valve, the indoor heat exchanger, and the second electronic expansion valve. The dehumidification control method includes: in dehumidification mode, acquiring temperature detection information of the indoor heat exchanger and indoor humidity detection information; adjusting the opening of the first electronic expansion valve according to the temperature detection information; and adjusting the opening of the second electronic expansion valve according to the humidity detection information, so that the evaporation pressure of the indoor heat exchanger meets the indoor humidity regulation requirements.

[0009] In some embodiments, the temperature detection information includes a first evaporation temperature and a second evaporation temperature of the indoor heat exchanger; adjusting the opening of the first electronic expansion valve according to the temperature detection information includes: calculating the evaporation temperature difference between the first evaporation temperature and the second evaporation temperature; determining a target adjustment method for the opening of the first electronic expansion valve based on the evaporation temperature difference; wherein the first evaporation temperature is the detected temperature at the refrigerant discharge end of the indoor heat exchanger under cooling conditions, and the second evaporation temperature is the detected temperature at the refrigerant inlet end of the indoor heat exchanger under cooling conditions.

[0010] In some embodiments, determining a target adjustment method for the opening of the first electronic expansion valve based on the evaporation temperature difference includes: comparing the evaporation temperature difference with a reference temperature threshold; if the evaporation temperature difference is greater than the reference temperature threshold, determining the target adjustment method as increasing the opening of the first electronic expansion valve; if the evaporation temperature difference is less than the reference temperature threshold, determining the target adjustment method as decreasing the opening of the first electronic expansion valve; and if the evaporation temperature difference is equal to the reference temperature threshold, determining the target adjustment method as keeping the opening of the first electronic expansion valve unchanged.

[0011] In some embodiments, the humidity detection information includes indoor ambient humidity; adjusting the opening of the second electronic expansion valve according to the humidity detection information includes: calculating the humidity difference between the indoor ambient humidity and the set humidity of the dehumidification mode; determining the indoor dehumidification requirement level according to the humidity difference; and adjusting the opening of the second electronic expansion valve according to the dehumidification requirement level.

[0012] In some embodiments, adjusting the opening of the second electronic expansion valve according to the dehumidification demand level includes: determining the target dehumidification level corresponding to the dehumidification demand level; and determining the opening of the second electronic expansion valve as the target opening corresponding to the target dehumidification level.

[0013] In some embodiments, the target opening degree corresponding to the target dehumidification level is determined by: obtaining a dehumidification information database containing multiple dehumidification levels and corresponding temperature decay values ​​for each dehumidification level; determining a reference temperature decay value corresponding to the target dehumidification level from the dehumidification information database; subtracting the reference temperature decay value from the indoor ambient temperature to obtain temperature calculation parameters; and determining the target opening degree based on the temperature calculation parameters and the critical pressure value of the refrigerant at saturation temperature.

[0014] In some embodiments, determining the indoor dehumidification requirement level based on the humidity difference includes: determining a first dehumidification level representing strong dehumidification when the humidity difference is greater than or equal to a first humidity threshold; determining a second dehumidification level representing normal dehumidification when the humidity difference is less than the first humidity threshold but greater than a second humidity threshold; and determining a third dehumidification level representing gentle dehumidification when the humidity difference is less than or equal to the second humidity threshold; wherein the first humidity threshold is greater than the second humidity threshold.

[0015] In some embodiments, the dehumidification control device includes a processor and a memory storing program instructions, wherein the processor executes the dehumidification control method described above when running the program instructions.

[0016] In some embodiments, the air conditioning system includes an indoor heat exchanger, a first electronic expansion valve, a second electronic expansion valve, and a dehumidification control device as described above; in the cooling mode, the refrigerant flows sequentially through the first electronic expansion valve, the indoor heat exchanger, and the second electronic expansion valve.

[0017] In some embodiments, the storage medium stores program instructions that, when executed, perform the dehumidification control method as described above.

[0018] The dehumidification control method and apparatus, air conditioning system, and storage medium provided in this disclosure can achieve the following technical effects:

[0019] By controlling the opening of the first and second electronic expansion valves of the air conditioning system based on temperature and humidity detection information in dehumidification mode, the evaporation pressure of the indoor heat exchanger is made to meet the indoor humidity regulation requirements, thereby achieving quantifiable control of the dehumidification function in dehumidification mode and improving the air conditioning system's regulation accuracy of ambient humidity.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0022] Figure 1 This is a partial schematic diagram of an air conditioning system provided in an embodiment of this disclosure;

[0023] Figure 2 This is a schematic diagram of a dehumidification control method provided in an embodiment of this disclosure;

[0024] Figure 3 This is a schematic diagram of another dehumidification control method provided in an embodiment of this disclosure;

[0025] Figure 4 This is a schematic diagram of another dehumidification control method provided in an embodiment of this disclosure;

[0026] Figure 5 This is a schematic diagram of another dehumidification control method provided in an embodiment of this disclosure;

[0027] Figure 6 This is a schematic diagram of another dehumidification control method provided in an embodiment of this disclosure;

[0028] Figure 7 This is a schematic diagram of a dehumidification control device provided in an embodiment of this disclosure.

[0029] Figure label:

[0030] 100. Processor; 101. Memory; 102. Communication interface; 103. Bus; 210. First electronic expansion valve; 220. Indoor heat exchanger; 221. First temperature sensor; 222. Second temperature sensor; 230. First electronic expansion valve. Detailed Implementation

[0031] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0032] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0033] Unless otherwise stated, the term "multiple" means two or more.

[0034] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0035] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0036] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0037] In this embodiment of the disclosure, smart home appliances refer to home appliances formed by introducing microprocessors, sensor technology and network communication technology into home appliances. They have the characteristics of intelligent control, intelligent sensing and intelligent application. The operation of smart home appliances often relies on the application and processing of modern technologies such as the Internet of Things, the Internet and electronic chips. For example, smart home appliances can be connected to electronic devices to enable users to remotely control and manage smart home appliances.

[0038] In this embodiment of the disclosure, the terminal device refers to an electronic device with wireless connectivity. The terminal device can communicate with the aforementioned smart home appliances by connecting to the internet, or directly via Bluetooth, Wi-Fi, or other methods. In some embodiments, the terminal device may be, for example, a mobile device, a computer, or an in-vehicle device built into a hovercraft, or any combination thereof. Mobile devices may include, for example, mobile phones, smart home devices, wearable devices, smart mobile devices, virtual reality devices, or any combination thereof. Wearable devices may include, for example, smartwatches, smart bracelets, pedometers, etc.

[0039] This disclosure provides an air conditioning system, including a first electronic expansion valve, an indoor heat exchanger, and a second electronic expansion valve. (In conjunction with...) Figure 1 As shown in the partial schematic diagram of the air conditioning system, the first electronic expansion valve 210, the indoor heat exchanger 220, and the second electronic expansion valve 230 are sequentially arranged in the refrigerant flow path. In cooling mode, the refrigerant flows sequentially through the first electronic expansion valve 210, the indoor heat exchanger 220, and the second electronic expansion valve 230.

[0040] Generally, air conditioning systems only include one electronic expansion valve connected to one end of the indoor heat exchanger, which is used to throttle the refrigerant flow path of the entire air conditioning system. However, in this solution, a second electronic expansion valve 230 is added to the other end of the indoor heat exchanger 220. By controlling the opening degree of the two electronic expansion valves, precise control of the dehumidification amount of the air conditioning system in dehumidification mode can be achieved.

[0041] Optionally, such as Figure 1As shown, the air conditioning system can also be equipped with a first temperature sensor 221 and a second temperature sensor 222. The first temperature sensor 221 is used to detect the temperature data at the first end of the indoor heat exchanger 220, and the second temperature sensor 222 is used to detect the temperature data at the second end of the indoor heat exchanger 220. Specifically, when the air conditioning system is in cooling mode, the refrigerant discharge end of the indoor heat exchanger 220 is considered the first end, and the refrigerant inlet end is considered the second end.

[0042] Thus, by acquiring the temperature data detected by the first temperature sensor 221, the detected temperature of the refrigerant discharge end of the indoor heat exchanger 220 under cooling conditions can be obtained; by acquiring the temperature data detected by the second temperature sensor 222, the detected temperature of the refrigerant inlet end of the indoor heat exchanger 220 under cooling conditions can be obtained.

[0043] Based on the aforementioned air conditioning system, this disclosure provides a dehumidification control method applied to the aforementioned air conditioning system. The dehumidification control method includes: in dehumidification mode, acquiring temperature detection information of the indoor heat exchanger 220 and indoor humidity detection information; adjusting the opening degree of the first electronic expansion valve 210 according to the temperature detection information; and adjusting the opening degree of the second electronic expansion valve 230 according to the humidity detection information, so that the evaporation pressure of the indoor heat exchanger 220 meets the indoor humidity regulation requirements.

[0044] Optionally, the entity performing the above steps can be the control module of the air conditioning system. Specifically, in dehumidification mode, the control module of the air conditioning system acquires temperature detection information of the indoor heat exchanger 220 and indoor humidity detection information; the control module adjusts the opening of the first electronic expansion valve 210 according to the temperature detection information; the control module adjusts the opening of the second electronic expansion valve 230 according to the humidity detection information, so that the evaporation pressure of the indoor heat exchanger 220 meets the indoor humidity regulation requirements. This achieves quantifiable control of the dehumidification function in dehumidification mode, improving the accuracy of the air conditioning system in regulating ambient humidity.

[0045] Combination Figure 2 As shown, this disclosure provides a dehumidification control method, including:

[0046] S01. In dehumidification mode, acquire the temperature detection information of the indoor heat exchanger and the humidity detection information of the room.

[0047] S02. Adjust the opening of the first electronic expansion valve according to the temperature detection information.

[0048] S03. Adjust the opening of the second electronic expansion valve according to the humidity detection information so that the evaporation pressure of the indoor heat exchanger meets the indoor humidity regulation requirements.

[0049] The dehumidification control method provided in this disclosure controls the opening of the first and second electronic expansion valves of the air conditioning system based on temperature and humidity detection information in dehumidification mode, so that the evaporation pressure of the indoor heat exchanger meets the indoor humidity regulation requirements, thereby realizing quantifiable control of the dehumidification function in dehumidification mode and improving the air conditioning system's regulation accuracy of ambient humidity.

[0050] Optionally, the temperature detection information may include a first evaporation temperature and a second evaporation temperature of the indoor heat exchanger; the temperature detection information may also include temperature data calculated based on the first evaporation temperature and the second evaporation temperature. Here, the first evaporation temperature is the detected temperature at the refrigerant discharge end of the indoor heat exchanger under cooling conditions, and the second evaporation temperature is the detected temperature at the refrigerant inlet end of the indoor heat exchanger under cooling conditions. Therefore, the control module of the air conditioning system can obtain the detected temperature at the refrigerant discharge end of the indoor heat exchanger under cooling conditions by acquiring the temperature data detected by the first temperature sensor. The control module of the air conditioning system can also obtain the detected temperature at the refrigerant inlet end of the indoor heat exchanger under cooling conditions by acquiring the temperature data detected by the second temperature sensor.

[0051] Optionally, the temperature detection information includes the first evaporation temperature and the second evaporation temperature of the indoor heat exchanger; adjusting the opening of the first electronic expansion valve according to the temperature detection information includes: calculating the evaporation temperature difference between the first evaporation temperature and the second evaporation temperature; determining the target adjustment method for the opening of the first electronic expansion valve based on the evaporation temperature difference; wherein, the first evaporation temperature is the detected temperature at the refrigerant discharge end of the indoor heat exchanger under cooling conditions, and the second evaporation temperature is the detected temperature at the refrigerant inlet end of the indoor heat exchanger under cooling conditions.

[0052] Since the air conditioning system is in dehumidification mode, the indoor heat exchanger acts as an evaporator, absorbing heat and cooling. Therefore, as the refrigerant flows from the second end to the first end of the indoor heat exchanger, it primarily absorbs heat, changing from a liquid to a gaseous state, and its temperature also increases to some extent. In this design, the evaporation temperature difference is obtained by subtracting the first evaporation temperature detected at the second end from the first evaporation temperature detected at the first end; this evaporation temperature difference is a positive value.

[0053] Combination Figure 3 As shown in the embodiments of this disclosure, another dehumidification control method is provided, including:

[0054] S11. Obtain the first evaporation temperature and the second evaporation temperature of the indoor heat exchanger.

[0055] S12. Calculate the temperature difference between the first evaporation temperature and the second evaporation temperature.

[0056] S13. Determine the target adjustment method for the opening of the first electronic expansion valve based on the evaporation temperature difference.

[0057] The dehumidification control method provided in this disclosure controls the opening of the first electronic expansion valve of the air conditioning system based on the first and second evaporation temperatures of the indoor heat exchanger during dehumidification mode, thus enabling subsequent control of the second electronic expansion valve. Through the combined action of the first and second electronic expansion valves, the evaporation pressure of the indoor heat exchanger is made to meet the indoor humidity regulation requirements, thereby achieving quantifiable control of the dehumidification function in dehumidification mode, improving the air conditioning system's accuracy in regulating ambient humidity, and to a certain extent avoiding drastic impacts on indoor ambient temperature during dehumidification, achieving precise and quantifiable dehumidification control of the air conditioning system within the acceptable fluctuation range of indoor ambient temperature.

[0058] Optionally, the target adjustment method for the opening of the first electronic expansion valve is determined based on the evaporation temperature difference, including: comparing the evaporation temperature difference with a reference temperature threshold; if the evaporation temperature difference is greater than the reference temperature threshold, determining the target adjustment method as increasing the opening of the first electronic expansion valve; if the evaporation temperature difference is less than the reference temperature threshold, determining the target adjustment method as decreasing the opening of the first electronic expansion valve; and if the evaporation temperature difference is equal to the reference temperature threshold, determining the target adjustment method as keeping the opening of the first electronic expansion valve unchanged.

[0059] The reference temperature threshold here can be set by the air conditioner at the factory or modified by the user. For example, the reference temperature threshold can be selected within the range of 0.8 to 1.5. Specifically, the reference temperature threshold can be 1. Taking a temperature reference threshold of 1 as an example, if the difference between the evaporation temperatures of the first evaporation temperature and the second evaporation temperature is greater than 1, the first electronic expansion valve is controlled to open larger by a certain number of steps; if the difference between the evaporation temperatures of the first evaporation temperature and the second evaporation temperature is less than 1, the first electronic expansion valve is controlled to close smaller by a certain number of steps; if the difference between the evaporation temperatures of the first evaporation temperature and the second evaporation temperature is equal to 1, the opening degree of the first electronic expansion valve remains unchanged.

[0060] In this way, the opening of the first electronic expansion valve is controlled based on the detected temperatures at both ends of the indoor heat exchanger. By changing the opening of the first electronic expansion valve, the superheat of the indoor heat exchanger can be controlled, which to some extent avoids the drastic impact on the indoor ambient temperature during dehumidification. This enables precise and quantifiable dehumidification control of the air conditioning system within the acceptable fluctuation range of the indoor ambient temperature.

[0061] Optionally, the humidity detection information includes indoor ambient humidity; adjusting the opening of the second electronic expansion valve based on the humidity detection information includes: calculating the humidity difference between the indoor ambient humidity and the set humidity of the dehumidification mode; determining the indoor dehumidification requirement level based on the humidity difference; and adjusting the opening of the second electronic expansion valve based on the dehumidification requirement level.

[0062] In this embodiment of the disclosure, the humidity requirement level is determined jointly based on the actual indoor humidity level and the set humidity value of the current dehumidification mode. Understandably, the humidity requirement level can be used to characterize the current indoor environment's humidity requirements for dehumidification regulation.

[0063] In this way, by changing the opening of the second electronic expansion valve, the evaporation pressure of the indoor heat exchanger can be adjusted, thereby achieving quantifiable control of the dehumidification function of the air conditioning system, improving the accuracy of the air conditioning system in regulating the ambient humidity; and to a certain extent, avoiding drastic impacts on the indoor ambient temperature during the dehumidification process, achieving precise and quantifiable dehumidification control of the air conditioning system within the acceptable fluctuation range of the indoor ambient temperature.

[0064] Combination Figure 4 As shown in the embodiments of this disclosure, another dehumidification control method is provided, including:

[0065] S21. Calculate the humidity difference between the indoor ambient humidity and the set humidity of the dehumidification mode.

[0066] S22. Determine the indoor dehumidification requirement level based on the humidity difference.

[0067] S23. Adjust the opening of the second electronic expansion valve according to the dehumidification requirement level.

[0068] The dehumidification control method provided in this embodiment controls the opening of the first electronic expansion valve of the air conditioning system based on the first and second evaporation temperatures during dehumidification mode. Then, the opening of the second electronic expansion valve is adjusted based on the humidity difference between the indoor ambient humidity and the set humidity of the dehumidification mode. Through the combined action of the first and second electronic expansion valves, the evaporation pressure of the adjusted indoor heat exchanger meets the indoor humidity regulation requirements, thereby achieving quantifiable control of the dehumidification function in dehumidification mode, improving the air conditioning system's accuracy in regulating ambient humidity, and to a certain extent avoiding drastic impacts on the indoor ambient temperature during dehumidification, achieving precise and quantifiable dehumidification control of the air conditioning system within the acceptable fluctuation range of the indoor ambient temperature.

[0069] Optionally, adjusting the opening of the second electronic expansion valve according to the dehumidification demand level includes: determining the target dehumidification level corresponding to the dehumidification demand level; and determining the opening of the second electronic expansion valve as the target opening corresponding to the target dehumidification level. In this embodiment of the present disclosure, the dehumidification demand level and the dehumidification level of the air conditioning system can be in one-to-one correspondence. After determining the dehumidification demand level, the target dehumidification level corresponding to the determined dehumidification demand level can be obtained based on the correspondence between the dehumidification demand level and the dehumidification level.

[0070] Combination Figure 5 As shown in the embodiments of this disclosure, another dehumidification control method is provided, including:

[0071] S31. Determine the target dehumidification level corresponding to the dehumidification requirement level.

[0072] S32. Determine the opening degree of the second electronic expansion valve as the target opening degree corresponding to the target dehumidification level.

[0073] This allows the target opening degree of the second electronic expansion valve to be determined based on the dehumidification demand level. The air conditioning system then controls the opening degree of the second electronic expansion valve based on this target opening degree. This, in turn, regulates the evaporation pressure of the indoor heat exchanger, enabling quantifiable control of the air conditioning system's dehumidification function and improving the system's accuracy in regulating ambient humidity. Furthermore, it minimizes the drastic impact on indoor temperature during dehumidification, achieving precise and quantifiable dehumidification control within acceptable fluctuations of indoor temperature.

[0074] Optionally, the target opening degree corresponding to the target dehumidification level is determined by the following methods: obtaining a dehumidification information database containing multiple dehumidification levels and corresponding temperature decay values; determining the reference temperature decay value corresponding to the target dehumidification level from the dehumidification information database; subtracting the reference temperature decay value from the indoor ambient temperature to obtain temperature calculation parameters; and determining the target opening degree based on the temperature calculation parameters and the critical pressure value of the refrigerant at saturation temperature.

[0075] Combination Figure 6 As shown in the embodiments of this disclosure, another dehumidification control method is provided, including:

[0076] S41. Obtain the dehumidification information database, which stores multiple dehumidification levels and the corresponding temperature decay values ​​for each dehumidification level.

[0077] S42. Determine the reference temperature decay value corresponding to the target dehumidification level from the dehumidification information database.

[0078] S43. Control the indoor ambient temperature and subtract the reference temperature attenuation value to obtain the temperature calculation parameters.

[0079] S44. Determine the target opening degree based on the temperature calculation parameters and the critical pressure value of the refrigerant at the saturation temperature.

[0080] In this way, the target opening degree of the second electronic expansion valve is determined based on the indoor ambient temperature and the target dehumidification level, providing an information basis for further regulating the evaporation pressure of the indoor heat exchanger. This ensures that the dehumidification function achieved through the above control method avoids drastic impacts on the indoor ambient temperature during dehumidification, achieving precise and quantifiable dehumidification control of the air conditioning system within the acceptable fluctuation range of the indoor ambient temperature.

[0081] Optionally, the indoor dehumidification requirement level is determined based on the humidity difference, including: when the humidity difference is greater than or equal to a first humidity threshold, the dehumidification requirement level is determined to be a first dehumidification level indicating strong dehumidification; when the humidity difference is less than the first humidity threshold but greater than a second humidity threshold, the dehumidification requirement level is determined to be a second dehumidification level indicating normal dehumidification; when the humidity difference is less than or equal to the second humidity threshold, the dehumidification requirement level is determined to be a third dehumidification level indicating gentle dehumidification; wherein the first humidity threshold is greater than the second humidity threshold. Specifically, the first humidity threshold can be twice the second humidity threshold. For example, if the first humidity threshold is 30%, the second humidity threshold can be determined to be 15%.

[0082] In practical applications, the higher the evaporation pressure of the indoor heat exchanger, the stronger the dehumidification capacity of the corresponding air conditioning system. Therefore, after controlling the opening of the first electronic expansion valve, the humidity difference obtained by subtracting the attenuation value of the indoor ambient temperature from the reference temperature is used to determine the dehumidification intensity of the target dehumidification level corresponding to the dehumidification requirement. This allows for the adjustment of the evaporation pressure of the indoor heat exchanger, thereby enabling quantifiable control of the dehumidification capacity of the air conditioning system and improving the accuracy of the air conditioning system's regulation of ambient humidity.

[0083] Combination Figure 7 As shown, this disclosure provides a dehumidification control device, including a processor 100 and a memory 101. Optionally, the device may further include a communication interface 102 and a bus 103. The processor 100, communication interface 102, and memory 101 can communicate with each other via the bus 103. The communication interface 102 can be used for information transmission. The processor 100 can call logical instructions in the memory 101 to execute the dehumidification control method of the above embodiment.

[0084] Furthermore, the logic instructions in the aforementioned memory 101 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0085] The memory 101, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 100 executes functional applications and data processing by running the program instructions / modules stored in the memory 101, thereby implementing the dehumidification control method in the above embodiments.

[0086] The memory 101 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 101 may include high-speed random access memory and may also include non-volatile memory.

[0087] This disclosure provides an air conditioning system, including an indoor heat exchanger, a first electronic expansion valve, a second electronic expansion valve, and the aforementioned dehumidification control device; in the cooling mode, the refrigerant flows sequentially through the first electronic expansion valve, the indoor heat exchanger, and the second electronic expansion valve.

[0088] The air conditioning system provided in this embodiment configures a second electronic expansion valve on top of the indoor heat exchanger and the first electronic expansion valve. In dehumidification mode, the opening degrees of the first and second electronic expansion valves are controlled using temperature and humidity detection information. This ensures that the evaporation pressure of the indoor heat exchanger meets the indoor humidity regulation requirements, thereby achieving quantifiable control of the dehumidification function in dehumidification mode and improving the accuracy of the air conditioning system's humidity regulation. Furthermore, the aforementioned dehumidification control method also avoids, to some extent, drastic impacts on the indoor ambient temperature during dehumidification, achieving precise and quantifiable dehumidification control of the air conditioning system within the acceptable fluctuation range of the indoor ambient temperature.

[0089] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the dehumidification control method described above.

[0090] This disclosure provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions that, when executed by a computer, cause the computer to perform the dehumidification control method described above.

[0091] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0092] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0093] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0094] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0095] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0096] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A dehumidification control method applied to an air conditioning system, the air conditioning system comprising an indoor heat exchanger and a first electronic expansion valve; characterized in that, The air conditioning system also includes a second electronic expansion valve; in the cooling mode, the refrigerant flows sequentially through the first electronic expansion valve, the indoor heat exchanger, and the second electronic expansion valve. The dehumidification control method includes: In dehumidification mode, the temperature detection information of the indoor heat exchanger and the humidity detection information of the room are obtained; Adjust the opening of the first electronic expansion valve according to the temperature detection information; Adjust the opening of the second electronic expansion valve according to the humidity detection information so that the evaporation pressure of the indoor heat exchanger meets the indoor humidity regulation requirements; The temperature detection information includes the first evaporation temperature and the second evaporation temperature of the indoor heat exchanger. Adjusting the opening of the first electronic expansion valve according to the temperature detection information includes: Calculate the temperature difference between the first evaporation temperature and the second evaporation temperature; Based on the evaporation temperature difference, determine the target adjustment method for the opening of the first electronic expansion valve; Wherein, the first evaporation temperature is the detected temperature at the refrigerant discharge end of the indoor heat exchanger under refrigeration conditions, and the second evaporation temperature is the detected temperature at the refrigerant inlet end of the indoor heat exchanger under refrigeration conditions.

2. The dehumidification control method according to claim 1, characterized in that, The method for determining the target adjustment of the opening of the first electronic expansion valve based on the evaporation temperature difference includes: The evaporation temperature difference is compared with a reference temperature threshold. If the evaporation temperature difference is greater than the reference temperature threshold, the target adjustment method is determined to be to increase the opening of the first electronic expansion valve; If the evaporation temperature difference is less than the reference temperature threshold, the target adjustment method is determined to be reducing the opening of the first electronic expansion valve; If the evaporation temperature difference is equal to the reference temperature threshold, the target adjustment mode is determined to keep the opening of the first electronic expansion valve unchanged.

3. The dehumidification control method according to claim 1 or 2, characterized in that, The humidity detection information includes indoor ambient humidity; Adjusting the opening of the second electronic expansion valve based on the humidity detection information includes: Calculate the humidity difference between the indoor ambient humidity and the set humidity of the dehumidification mode; Based on the humidity difference, determine the indoor dehumidification requirement level; Adjust the opening of the second electronic expansion valve according to the dehumidification requirement level.

4. The dehumidification control method according to claim 3, characterized in that, Adjusting the opening of the second electronic expansion valve according to the dehumidification requirement level includes: Determine the target dehumidification level corresponding to the dehumidification requirement level; The opening degree of the second electronic expansion valve is determined to be the target opening degree corresponding to the target dehumidification level.

5. The dehumidification control method according to claim 4, characterized in that, The target opening degree corresponding to the target dehumidification level is determined by the following method: Obtain a dehumidification information database, which stores multiple dehumidification levels and the corresponding temperature decay values ​​for each dehumidification level; Determine the reference temperature decay value corresponding to the target dehumidification level from the dehumidification information database; The indoor ambient temperature is controlled by subtracting the reference temperature decay value to obtain the temperature calculation parameters; The target opening degree is determined based on the temperature calculation parameters and the critical pressure value of the refrigerant at the saturation temperature.

6. The dehumidification control method according to claim 3, characterized in that, Determining the indoor dehumidification requirement level based on the humidity difference includes: If the humidity difference is greater than or equal to the first humidity threshold, the dehumidification requirement level is determined to be the first dehumidification level, which represents strong dehumidification. If the humidity difference is less than the first humidity threshold and greater than the second humidity threshold, the dehumidification requirement level is determined to be the second dehumidification level, which represents conventional dehumidification. If the humidity difference is less than or equal to the second humidity threshold, the dehumidification requirement level is determined to be the third dehumidification level, which represents gentle dehumidification. Wherein, the first humidity threshold is greater than the second humidity threshold.

7. A dehumidification control device, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute the dehumidification control method as described in any one of claims 1 to 6 when executing the program instructions.

8. An air conditioning system, comprising an indoor heat exchanger and a first electronic expansion valve; characterized in that, It also includes a second electronic expansion valve and the dehumidification control device as described in claim 7; In the cooling mode, the refrigerant flows sequentially through the first electronic expansion valve, the indoor heat exchanger, and the second electronic expansion valve in the air conditioning system.

9. A storage medium storing program instructions, characterized in that, When the program instructions are executed, they perform the dehumidification control method as described in any one of claims 1 to 6.

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