Method and device for refrigerant state adjustment, air conditioner, storage medium

Abstract

The application relates to the technical field of intelligent household appliances, and discloses a method for refrigerant state adjustment, which comprises the following steps: acquiring a first outlet temperature value of an outlet end of a gas-liquid separator and a first inlet temperature value of a compressor back gas port; determining a first calculation temperature value according to the first inlet temperature value; and adjusting the state of refrigerant flowing through a refrigerant adjustment assembly in the case that the first outlet temperature value is less than the first calculation temperature value. The calculation temperature value is obtained according to the detected inlet temperature value of the compressor back gas port. In the case that the outlet temperature value of the outlet end of the gas-liquid separator is less than the calculation temperature value, it is determined that there is a large amount of liquid refrigerant in the refrigerant flowing out of the gas-liquid separator. At this time, the refrigerant adjustment assembly is controlled to adjust the state of the refrigerant flowing therethrough, so as to reduce the content of liquid refrigerant in the refrigerant flowing into the compressor back gas port. Therefore, the accuracy of the state adjustment of the refrigerant flowing into the compressor back gas port is effectively improved. The application further discloses a device for refrigerant state adjustment, an air conditioner and a storage medium.

Description

Technical Field

[0001] This application relates to the field of smart home appliance technology, such as a method and apparatus for refrigerant state regulation, an air conditioner, and a storage medium. Background Technology

[0002] The compressor is the heart of an air conditioner, generating power to drive the refrigerant circulation. However, the compressor can only compress gaseous refrigerant, not liquid refrigerant. Liquid refrigerant entering the compressor can damage it, even causing it to burn out. Currently, to prevent this, a gas-liquid separator is typically installed before the compressor's return line. However, after the air conditioner operates in modes such as defrosting or oil return, a large amount of liquid refrigerant enters the gas-liquid separator, exceeding its processing capacity and causing liquid slugging in the compressor.

[0003] A gas-liquid separator for an air conditioner is disclosed in the related art, including a gas-liquid separator tank, a vaporization tank, and a heating device; the gas-liquid separator tank has a first refrigerant inlet for communication with the refrigerant recovery end of the air conditioner's circulation loop, and a first refrigerant outlet for communication with the vaporization tank; the vaporization tank has a second refrigerant inlet for communication with the first refrigerant outlet via a first connecting pipe, and a second refrigerant outlet for communication with the refrigerant recovery end of the air conditioner's compressor; the heating device is installed in the vaporization tank for heating the vaporization tank to vaporize the refrigerant inside the vaporization tank.

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

[0005] While the aforementioned technical solutions can reduce the amount of liquid refrigerant flowing into the compressor to some extent, they cannot guarantee that when the proportion of liquid refrigerant is too high, the refrigerant entering the compressor after heating the gas-liquid separator will be entirely gaseous. In other words, the method of heating the gas-liquid separator is insufficient in its accuracy regarding the refrigerant state regulation flowing into the compressor's return port.

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

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

[0008] This disclosure provides a method and apparatus for refrigerant state adjustment, an air conditioner, and a storage medium to improve the accuracy of refrigerant state adjustment flowing into the compressor return port.

[0009] In some embodiments, the above method is applied to an air conditioner; the air conditioner includes a compressor, a gas-liquid separator, and a refrigerant regulating component; wherein the refrigerant regulating component is disposed between the return port of the compressor and the outlet end of the gas-liquid separator; the above method includes: acquiring a first outlet temperature value of the outlet end of the gas-liquid separator and a first inlet temperature value of the return port of the compressor; determining a calculated temperature value based on the inlet temperature value; and adjusting the state of the refrigerant flowing through the refrigerant regulating component when the outlet temperature value is less than the calculated temperature value.

[0010] Optionally, the refrigerant regulation assembly further includes a first heating device for increasing the refrigerant temperature at the compressor return port; determining a calculated temperature value based on the inlet temperature value includes: acquiring the system pressure value at the inlet end of the gas-liquid separator; determining the calculated enthalpy value of the refrigerant based on the inlet temperature value and the system pressure value; determining the target enthalpy value of the refrigerant based on the first operating power of the first heating device and the calculated enthalpy value; and determining the calculated temperature value based on the target enthalpy value and the system pressure value.

[0011] Optionally, the calculated enthalpy of the refrigerant is determined based on the inlet temperature value and the system pressure value, including: determining the enthalpy value corresponding to the inlet temperature value and the system pressure value as the calculated enthalpy value according to a preset first correspondence; wherein the calculated enthalpy value is positively correlated with the first inlet temperature value and the system pressure value, thereby increasing the numerical relationship.

[0012] Optionally, the target enthalpy of the refrigerant is determined based on the first operating power and calculated enthalpy of the first heating device, including: calculating... The target enthalpy value h2 of the refrigerant is obtained; where h1 is the calculated enthalpy value, P is the first operating power, and q m This refers to the mass flow rate of the refrigerant.

[0013] Optionally, the calculation temperature value is determined based on the target enthalpy value and the system pressure value, including: determining the temperature value corresponding to the target enthalpy value and the system pressure value as the calculation temperature value according to a preset second correspondence; wherein, the first calculation temperature value is positively correlated with the target enthalpy value and the system pressure value, thereby increasing the numerical relationship.

[0014] Optionally, the refrigerant regulating component further includes a second heating device for heating the refrigerant temperature at the outlet of the gas-liquid separator; regulating the refrigerant state flowing through the refrigerant regulating component includes: obtaining the duration for which the outlet temperature value is continuously lower than the calculated temperature value; and controlling the second heating device to turn on and operate at a second operating power when the duration is greater than or equal to a duration threshold; wherein the first operating power and the second operating power are used only to represent the operating power of the first heating device and the second heating device.

[0015] Optionally, after controlling the second heating device to operate at the second operating power, the method further includes: when the second heating device operates at the second operating power for a set time, acquiring the second outlet temperature value of the gas-liquid separator outlet and the second inlet temperature value of the compressor return port; determining a second calculated temperature value based on the second inlet temperature value; and controlling the operating power of the second heating device to increase the set power when the second outlet temperature value is less than the second calculated temperature value.

[0016] In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to perform the method for refrigerant state regulation as described above when the program instructions are executed.

[0017] In some embodiments, the air conditioner includes: an air conditioner body; a refrigerant regulating assembly disposed between the return port of the compressor and the outlet of the gas-liquid separator; and a device for refrigerant state regulation as described above, which is installed on the air conditioner body.

[0018] In some embodiments, the storage medium stores program instructions that, when executed, perform the method for refrigerant state adjustment as described above.

[0019] The method, apparatus, air conditioner, and storage medium for refrigerant state regulation provided in this disclosure can achieve the following technical effects:

[0020] The inlet temperature of the compressor's return port is detected to obtain a calculated temperature value. This calculated temperature value serves as a reference parameter for determining the refrigerant state between the outlet of the gas-liquid separator and the compressor's return port. If the outlet temperature of the refrigerant flowing out of the gas-liquid separator is lower than the calculated temperature value, it is determined that there is a significant amount of liquid refrigerant in the refrigerant flowing out of the gas-liquid separator. In this case, the refrigerant regulating component is controlled to adjust the refrigerant state flowing through it, thereby reducing the liquid refrigerant content in the refrigerant flowing into the compressor's return port. This effectively improves the accuracy of the refrigerant state regulation at the compressor's return port.

[0021] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0022] 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:

[0023] Figure 1 This is a schematic diagram of the refrigerant circulation loop of an air conditioner provided in an embodiment of this disclosure;

[0024] Figure 2 This is a schematic diagram of a method for refrigerant state adjustment provided in an embodiment of this disclosure;

[0025] Figure 3 This is a schematic diagram of another method for refrigerant state adjustment provided in an embodiment of this disclosure;

[0026] Figure 4 This is a schematic diagram of a device for refrigerant state regulation provided in an embodiment of this disclosure;

[0027] Figure 5 This is a schematic diagram of an air conditioner provided in an embodiment of this disclosure;

[0028] Figure 6 This is a schematic diagram of another air conditioner provided in an embodiment of this disclosure.

[0029] Figure label:

[0030] 10: Compressor; 20: Oil separator; 30: Four-way valve; 40: Indoor heat exchanger; 50: Outdoor heat exchanger; 60: Gas-liquid separator; 70: Refrigerant regulating component; 71: Second heating device; 72: Outlet temperature sensor; 73: First heating device; 74: Inlet temperature sensor; 80: Pressure sensor; 300: Device for refrigerant condition regulation; 301: Processor; 302: Memory; 303: Communication interface; 304: Bus. 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 addition, the term "settings" should be interpreted broadly.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0039] In the disclosed embodiments, the terminal device refers to an electronic device with wireless connectivity. The terminal device can communicate with smart home appliances via the internet, or directly via Bluetooth, WiFi, 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.

[0040] Combination Figure 1As shown, this embodiment of the present disclosure provides an air conditioner comprising a refrigerant circulation loop formed by sequentially connecting a compressor 10, an oil separator 20, a four-way valve 30, an indoor heat exchanger 40, an outdoor heat exchanger 50, a gas-liquid separator 60, and a refrigerant regulating assembly 70, and a pressure sensor 80 disposed at any position between the inlet end of the gas-liquid separator 60 and the four-way valve 30. The refrigerant regulating assembly 70 includes a second heating device 71 for regulating the refrigerant state, sequentially connected between the outlet end of the gas-liquid separator 60 and the return port of the compressor 10; an outlet temperature sensor 72 for detecting the refrigerant temperature at the outlet end of the gas-liquid separator 60; a first heating device 73 for assisting in refrigerant state detection; and an inlet temperature sensor 74 for detecting the refrigerant temperature at the return port of the compressor 10. Furthermore, multiple indoor heat exchangers 40 may be arranged in parallel. The air conditioner also includes a processor 301 electrically connected to a pressure sensor 80, a second heating device 71, an outlet temperature sensor 72, a first heating device 73, and an inlet temperature sensor 74. The processor 301 processes and analyzes the detection information from the pressure sensor 80, the outlet temperature sensor 72, and the inlet temperature sensor 74, and adjusts the operating status of the first heating device 73 and the second heating device 71 based on the analysis results.

[0041] Combination Figure 1 The refrigerant circulation loop of the air conditioner shown in this disclosure provides a method for refrigerant state adjustment. For example... Figure 2 As shown, the above method includes:

[0042] S201, the processor obtains the first outlet temperature value of the gas-liquid separator and the first inlet temperature value of the compressor return port.

[0043] S202, the processor determines the first calculated temperature value based on the first inlet temperature value.

[0044] S203, when the first outlet temperature value is lower than the first calculated temperature value, the processor adjusts the state of the refrigerant flowing through the refrigerant regulating component.

[0045] Here, the first inlet temperature value can be detected by an inlet sensor located between the compressor return port and the first heating device; the first outlet temperature value can be detected by an outlet temperature sensor located between the first heating device and the second heating device.

[0046] The first calculated temperature value is the reference parameter for determining the refrigerant state between the outlet of the gas-liquid separator and the return port of the compressor.

[0047] Adjusting the refrigerant state refers to converting the liquid refrigerant flowing through the refrigerant adjustment component into a gaseous refrigerant.

[0048] The method for refrigerant state regulation provided in this disclosure improves the accuracy of refrigerant state regulation at the compressor return port. By detecting the inlet temperature of the compressor return port, a calculated temperature value is obtained. If the outlet temperature of the refrigerant flowing out of the gas-liquid separator is lower than the calculated temperature value, it is determined that there is a significant amount of liquid refrigerant in the refrigerant flowing out of the gas-liquid separator. In this case, the refrigerant regulation component is controlled to adjust the refrigerant state flowing through it, ensuring that all refrigerant flowing into the compressor return port is gaseous. Therefore, the accuracy of refrigerant state regulation at the compressor return port is effectively improved.

[0049] Optionally, the processor determines the calculated temperature value based on the inlet temperature value, including:

[0050] The processor acquires the system pressure value at the inlet of the gas-liquid separator; based on the first inlet temperature value and the system pressure value, the processor determines the calculated enthalpy value of the refrigerant. Based on the first operating power of the first heating device and the calculated enthalpy value, the processor determines the target enthalpy value of the refrigerant. Based on the target enthalpy value and the system pressure value, the processor determines the first calculated temperature value.

[0051] The system pressure value can be detected by a pressure sensor located at any position between the inlet end of the gas-liquid separator and the four-way valve.

[0052] The first calculated temperature value is the reference parameter for determining the refrigerant state between the outlet of the gas-liquid separator and the return port of the compressor.

[0053] This allows for a more pronounced change in refrigerant temperature before and after heating via the first heating device, thereby improving the accuracy of refrigerant state assessment. The energy threshold, or calculated enthalpy, of the gaseous refrigerant flowing into the compressor in the current refrigerant circulation loop is determined using the inlet temperature and system pressure values. Then, based on the calculated enthalpy and the first operating power, the energy threshold, or target enthalpy, for the refrigerant exiting the gas-liquid separator as a gaseous state is determined. Finally, the first calculated temperature, which can be directly compared with the outlet temperature, can be determined based on the target enthalpy and system pressure.

[0054] The first heating device can operate at a set power to ensure the effectiveness of the refrigerant state after being heated by the first heating device. The first operating power can be any value within [40, 110] W. Preferably, it can be 50 W, 80 W, or 100 W. Simultaneously, to ensure the accuracy of the refrigerant regulation component, the first heating device can be kept in operation at all times. To reduce energy consumption, the first heating device can be kept in operation only when the equipment is running in a set mode. Specifically, the set mode can be a start-up mode, an oil return mode, or a defrost mode, etc. The specific start-up mode can be set according to usage requirements and is not specifically limited here.

[0055] Optionally, the processor determines the calculated enthalpy of the refrigerant based on the first inlet temperature value and the system pressure value, including: the processor determines the enthalpy value corresponding to the first inlet temperature value and the system pressure value as the calculated enthalpy value according to a preset first correspondence relationship. The calculated enthalpy value is positively correlated with the first inlet temperature value and the system pressure value, thus strengthening the numerical relationship.

[0056] In this way, the corresponding calculated enthalpy value can be quickly determined based on the preset correspondence. Specifically, the correspondence can be a refrigerant physical property table that characterizes the physical properties of the refrigerant under different conditions. This table includes parameters such as the refrigerant's temperature, pressure, density, enthalpy value, and specific heat capacity. When the current first inlet temperature value and system pressure value are obtained, the calculated enthalpy value corresponding to the first inlet temperature value and system pressure value can be determined by consulting the refrigerant physical property table.

[0057] Optionally, the processor determines the target enthalpy of the refrigerant based on the first operating power of the first heating device and the calculated enthalpy, including:

[0058] Processor computing The target enthalpy value h2 of the refrigerant is obtained. Where h1 is the calculated enthalpy value, P is the first operating power, and q... m This represents the mass flow rate of the refrigerant. It's important to note that in the above calculation, the algebraic values ​​between h1, h2, and P are evaluated, but unit conversions are not performed.

[0059] This approach ensures a higher accuracy in calculating the target enthalpy. The energy change of the refrigerant after heating by the first heating device is determined by the ratio of the first operating power to the refrigerant's mass flow rate. The sum of the calculated enthalpy and the energy change is then used to determine the target enthalpy, thus guaranteeing its accuracy.

[0060] Optionally, the processor determines the calculated temperature value based on the target enthalpy and system pressure values, including: the processor determining a first calculated temperature value corresponding to the target enthalpy and system pressure values ​​according to a preset second correspondence. The first calculated temperature value is positively correlated with the target enthalpy and system pressure values, strengthening the numerical relationship. Alternatively, the processor performs a linear fit on the target enthalpy and system pressure values, and obtains the first calculated temperature value based on the fitting result.

[0061] This allows for a better selection of the appropriate method for determining the calculated temperature value based on different operating conditions. The calculated temperature value can be quickly determined based on a preset correspondence. Specifically, this correspondence can be a pre-stored table containing these correspondences, such as a table of refrigerant physical properties. Alternatively, a more accurate calculated temperature value can be determined through linear fitting. This allows users to choose different methods for determining the calculated temperature value according to different usage requirements, thereby effectively improving the applicability of the equipment.

[0062] Optionally, the processor adjusts the refrigerant state flowing through the refrigerant regulating component, including: the processor acquiring the duration for which a first outlet temperature value remains lower than a first calculated temperature value. If the duration is greater than or equal to a duration threshold, the processor controls the second heating device to turn on and operate at a second operating power. Here, the first operating power and the second operating power are used only to represent the operating power of the first heating device and the second heating device, respectively.

[0063] This avoids inaccurate refrigerant state determination due to detection errors in the temperature sensor. Specifically, if the outlet temperature of the gas-liquid separator remains lower than the first calculated temperature value within 5 seconds, the refrigerant is determined to be in a liquid state. At this time, the second heating device is activated and operates at a second operating power. This second operating power can be the default operating power after the second heating device is activated, or it can be a corresponding operating power determined based on the temperature difference between the outlet temperature value and the calculated temperature value. It should be noted that the operating power of the second heating device is adjustable, specifically within the range of [200, 2000] W.

[0064] Optionally, the processor regulates the refrigerant state flowing through the refrigerant regulating component, including: the processor acquiring a compensated temperature value; the processor calculating the sum of a first calculated temperature value and the compensated temperature value; and if the first outlet temperature value is less than the sum of the temperatures, the processor controls the second heating device to turn on and operate at a second operating power.

[0065] This avoids inaccurate refrigerant status determination due to detection errors in the temperature sensor. The compensation temperature value can be determined by the temperature difference between the first inlet temperature and the first outlet temperature, or by setting a fixed compensation temperature value. The compensation temperature value can be any value within the range of [0.4, 0.6]℃, preferably 0.45℃, 0.5℃, or 0.55℃.

[0066] Combination Figure 3 As shown, this disclosure provides another method for refrigerant state adjustment, including:

[0067] S310, the processor acquires the first outlet temperature value and the first inlet temperature value.

[0068] S320, the processor determines the first calculated temperature value based on the first inlet temperature value.

[0069] S321, the processor obtains system stress values.

[0070] S322, the processor determines the calculated enthalpy of the refrigerant based on the first inlet temperature and the system pressure.

[0071] S323, the processor calculates the target enthalpy of the refrigerant based on the calculated enthalpy and the first operating power.

[0072] S324, the processor determines the first calculated temperature value based on the target enthalpy value and the system pressure value.

[0073] S325, the processor determines whether the first outlet temperature value is less than the first calculated temperature value. If yes, proceed to step S326; otherwise, return to step S310.

[0074] S326, the processor obtains the duration for which the first outlet temperature value is less than the first calculated temperature value.

[0075] S327, the processor determines whether the duration is greater than or equal to the duration threshold. If yes, proceed to step S330; otherwise, return to step S310.

[0076] S330, the processor controls the second heating device to operate at the second operating power.

[0077] S331, the processor obtains the runtime of the second heating device.

[0078] S332, the processor determines whether the runtime is greater than or equal to the set runtime. If yes, proceed to step S333; otherwise, return to step S331.

[0079] S333, the processor obtains the second outlet temperature value and the second inlet temperature value.

[0080] S334, the processor determines the second calculation temperature value based on the second inlet temperature value.

[0081] S335, the processor determines whether the second outlet temperature value is less than the second calculated temperature value. If yes, proceed to step S336; otherwise, return to step S310.

[0082] S336, the processor obtains the current operating power of the second heating device.

[0083] S337, the processor sets the sum of the current operating power and the set power as the target operating power.

[0084] S338, the processor controls the second heating device to operate at the target operating power.

[0085] In step S339, the processor resets the runtime to zero. Simultaneously, it returns to step S331.

[0086] The method for refrigerant state adjustment provided in this disclosure can effectively determine the most suitable operating power of the second heating device. A first calculated temperature value is obtained based on the first inlet temperature and system pressure. After continuous determination over a certain period based on the relationship between the first outlet temperature and the first calculated temperature value, it is determined whether the refrigerant flowing out of the gas-liquid separator is gaseous. If it is determined that the refrigerant flowing out of the gas-liquid separator is liquid, the second heating device is controlled to operate at a second operating power, thereby converting the liquid refrigerant into gaseous refrigerant. To ensure the efficiency of the second heating device in refrigerant state conversion, it is determined at set intervals whether the operating power of the second heating device needs to be increased, i.e., the relationship between the second outlet temperature and the second calculated temperature value is determined. If it is determined that the current refrigerant is still liquid, the operating power of the second heating device is increased to a set power. If the operating power of the second heating device reaches its maximum power, the operating power of the second heating device is no longer increased. If it is determined that the current refrigerant is gaseous, the second heating device is controlled to maintain its current operating state. The set power can be any value in the range [200, 500] W. It should be noted that the first outlet temperature value, the second outlet temperature value, the first inlet temperature value, and the second inlet temperature value are only used to indicate that the parameters were acquired at different times.

[0087] Combination Figure 4 As shown, this disclosure provides an apparatus 300 for refrigerant state adjustment, including a processor 301 and a memory 302. Optionally, the apparatus may further include a communication interface 303 and a bus 304. The processor 301, communication interface 303, and memory 302 can communicate with each other via the bus 304. The communication interface 303 can be used for information transmission. The processor 301 can call logical instructions in the memory 302 to execute the refrigerant state adjustment method of the above embodiment.

[0088] Furthermore, the logic instructions in the aforementioned memory 302 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0089] The memory 302, 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 302 executes functional applications and data processing by running the program instructions / modules stored in the memory 302, that is, it implements the method for refrigerant state regulation in the above embodiments.

[0090] The memory 302 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 302 may include high-speed random access memory and may also include non-volatile memory.

[0091] Combination Figure 5 and Figure 6 As shown, this disclosure provides an air conditioner, including an air conditioner body and the aforementioned refrigerant state adjustment device 300. The refrigerant state adjustment device 300 is installed on the air conditioner body. The installation relationship described herein is not limited to placement inside the air conditioner, but also includes installation connections with other components of the air conditioner, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the refrigerant state adjustment device 300 can be adapted to any feasible air conditioner body, thereby realizing other feasible embodiments.

[0092] This disclosure provides a storage medium storing computer-executable instructions configured to perform the above-described method for refrigerant state adjustment.

[0093] The aforementioned storage medium can be either transient or non-transient.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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 method for regulating the state of a refrigerant, characterized in that, The method is applied to an air conditioner; the air conditioner includes a compressor, a gas-liquid separator, and a refrigerant regulating component; wherein, the refrigerant regulating component is disposed between the compressor's return port and the gas-liquid separator's outlet port; the refrigerant regulating component further includes a first heating device for increasing the refrigerant temperature at the compressor's return port; and a second heating device for heating the refrigerant temperature at the gas-liquid separator's outlet port; the method includes: Obtain the first outlet temperature value of the gas-liquid separator and the first inlet temperature value of the compressor return port; Determine the first calculated temperature value based on the first inlet temperature value; If the first outlet temperature is lower than the first calculated temperature, the refrigerant state flowing through the refrigerant regulating component is adjusted. The step of determining the first calculated temperature value based on the first inlet temperature value includes: obtaining the system pressure value at the inlet end of the gas-liquid separator; determining the calculated enthalpy value of the refrigerant based on the first inlet temperature value and the system pressure value; determining the target enthalpy value of the refrigerant based on the first operating power of the first heating device and the calculated enthalpy value; and determining the first calculated temperature value based on the target enthalpy value and the system pressure value. The calculated enthalpy value is used to characterize the energy threshold of the gaseous refrigerant flowing into the compressor in the current refrigerant circulation loop; the target enthalpy value is used to characterize the energy threshold of the refrigerant being in a gaseous state at the outlet end of the gas-liquid separator; and the first calculated temperature value is a reference parameter for determining the refrigerant state between the outlet end of the gas-liquid separator and the return port of the compressor. The regulation of the refrigerant state flowing through the refrigerant regulation component includes: obtaining the duration for which the first outlet temperature value is continuously lower than the first calculated temperature value; and controlling the second heating device to turn on and operate at the second operating power when the duration is greater than or equal to the duration threshold.

2. The method according to claim 1, characterized in that, The determination of the calculated enthalpy of the refrigerant based on the first inlet temperature and system pressure includes: Based on the preset first correspondence, the enthalpy value corresponding to the first inlet temperature value and the system pressure value is determined to be the calculated enthalpy value; Among them, the calculated enthalpy value is positively correlated with the first inlet temperature value and the system pressure value, thus increasing the numerical relationship.

3. The method according to claim 1, characterized in that, Determining the target enthalpy of the refrigerant based on the first operating power and calculated enthalpy of the first heating device includes: calculate h 2= h 1+ The target enthalpy value of the refrigerant was obtained. h 2; in, h 1 is for calculating the enthalpy value. P The first operating power, q m This refers to the mass flow rate of the refrigerant.

4. The method according to claim 1, characterized in that, The determination of the first calculated temperature value based on the target enthalpy value and the system pressure value includes: Based on the preset second correspondence, the temperature value corresponding to the target enthalpy value and the system pressure value is determined as the first calculation temperature value; Among them, the first calculated temperature value is positively correlated with the target enthalpy value and the system pressure value, thus increasing the numerical relationship.

5. The method according to any one of claims 1-4, characterized in that, The first operating power and the second operating power are used only to indicate the operating power of the first heating device and the second heating device.

6. The method according to claim 5, characterized in that, After controlling the second heating device to operate at the second operating power, the following is also included: When the second heating device operates at the second operating power for a set duration, the second outlet temperature value of the gas-liquid separator outlet and the second inlet temperature value of the compressor return port are obtained. The second calculated temperature value is determined based on the second inlet temperature value; If the second outlet temperature is lower than the second calculated temperature, the operating power of the second heating device is increased to the set power.

7. A device for regulating the state of a refrigerant, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to, when executing the program instructions, perform the method for refrigerant state regulation as described in any one of claims 1 to 6.

8. An air conditioner, characterized in that, include: Air conditioner body; The refrigerant regulating component is located between the compressor's return port and the outlet of the gas-liquid separator; and, The device for refrigerant state adjustment as described in claim 7 is installed on the air conditioner body.

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

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