Method and device for controlling air outlet temperature of air conditioner, air conditioner, storage medium

Abstract

The application relates to the technical field of intelligent household appliances, and discloses a method for controlling air outlet temperature of an air conditioner, which comprises the following steps: in response to an operation instruction of the air conditioner, obtaining a current air outlet temperature and a preset air outlet temperature; determining a target temperature of an indoor unit coil according to a first temperature difference between the preset air outlet temperature and the current air outlet temperature; determining a target value of an air conditioner parameter corresponding to the first temperature difference according to a corresponding relationship between the temperature difference and the air conditioner parameter; adjusting the air conditioner parameter to the target value in sequence so that the temperature of the indoor unit coil reaches the target temperature; wherein the adjustment sequence of the air conditioner parameter is in sequence as follows: compressor operation frequency, exhaust refrigerant pressure of the compressor, refrigerant flow speed and gas-liquid ratio of compressor return refrigerant. The method can quickly adjust the performance of the air conditioner according to the above parameters, thereby ensuring accurate adjustment of the air outlet temperature and realizing energy saving. The application further discloses a device for controlling air outlet temperature of an air conditioner, 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, apparatus, air conditioner, and storage medium for controlling the outlet air temperature of an air conditioner. Background Technology

[0002] With the increasing prevalence and number of household appliances, their energy consumption is also rising daily. How to conserve energy is a crucial issue that needs to be addressed. Air conditioners, in particular, experience significant fluctuations in energy efficiency due to factors such as voltage, current, and refrigerant content. These fluctuations lead to instability in energy efficiency and substantial energy waste.

[0003] In related technologies, a control method for an air conditioner is disclosed, including: detecting the outlet air temperature of all indoor heat exchangers; adjusting the opening degree of the electronic expansion valve according to the air conditioner's operating mode and outlet air temperature, and detecting the coil temperature of all indoor heat exchangers; adjusting the compressor frequency according to the coil temperature and the opening degree of the electronic expansion valve; wherein, adjusting the compressor frequency according to the coil temperature and the opening degree of the electronic expansion valve includes: when the air conditioner's operating mode is cooling mode: when the coil temperature of the first indoor heat exchanger is in a first temperature range and the opening degree of the first electronic expansion valve is in a first opening degree range, increasing the compressor frequency; wherein, the first indoor heat exchanger is any one of multiple indoor heat exchangers in the indoor unit, and the first electronic expansion valve is connected to the first indoor heat exchanger; when the coil temperatures of all indoor heat exchangers are in a second temperature range and the opening degree of the first electronic expansion valve is in a second opening degree range, keeping the compressor frequency unchanged; when the coil temperature of the first indoor heat exchanger is in a third temperature range, adjusting the compressor frequency according to the change in the coil temperature of the first indoor heat exchanger.

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

[0005] The relevant technology adjusts the outlet air temperature of multiple indoor heat exchangers in a multi-split air conditioner, but this method is not suitable for a single-unit air conditioner. For a single-unit air conditioner, repeatedly adjusting the compressor frequency and the opening of the electronic expansion valve causes fluctuations in the air conditioner's operation, resulting in significant energy waste.

[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, apparatus, air conditioner, and storage medium for controlling the outlet air temperature of an air conditioner, so as to control the outlet air temperature of the air conditioner more accurately and reduce energy waste.

[0009] In some embodiments, the method includes: in response to an air conditioner's operating command, acquiring a current outlet air temperature and a preset outlet air temperature; determining a target temperature for the indoor unit coil based on a first temperature difference between the preset outlet air temperature and the current outlet air temperature; determining a target value for the air conditioner parameter corresponding to the first temperature difference based on the correspondence between the temperature difference and air conditioner parameters; and sequentially adjusting the air conditioner parameters to the target values ​​so that the indoor unit coil temperature reaches the target temperature; wherein the adjustment order of the air conditioner parameters is, in order, compressor operating frequency, compressor exhaust refrigerant pressure, refrigerant flow rate, and the gas-liquid ratio of the compressor return refrigerant.

[0010] In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to, when executing the program instructions, perform the aforementioned method for controlling the outlet air temperature of an air conditioner.

[0011] In some embodiments, the air conditioner includes: an air conditioner body; and, as described above, a device for controlling the air conditioner outlet temperature, which is installed on the air conditioner body.

[0012] In some embodiments, the storage medium stores program instructions that, when executed, perform the aforementioned method for controlling the air outlet temperature of an air conditioner.

[0013] The method, apparatus, air conditioner, and storage medium for controlling the outlet air temperature of an air conditioner provided in this disclosure can achieve the following technical effects:

[0014] In this embodiment, based on the first temperature difference between the current air outlet temperature and the preset air outlet temperature, the corresponding compressor operating frequency, compressor discharge refrigerant pressure, refrigerant flow rate, and target value of the compressor return refrigerant gas-liquid ratio are determined; and the above parameters of the air conditioner are adjusted sequentially to achieve the target values. In this way, the performance of the air conditioner can be quickly adjusted according to the above parameters, ensuring that the indoor unit coil temperature meets the target temperature corresponding to the first temperature difference. This, in turn, ensures precise adjustment of the air outlet temperature, contributing to energy saving.

[0015] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0016] 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:

[0017] Figure 1 This is a schematic diagram of an air conditioning system structure provided in an embodiment of this disclosure;

[0018] Figure 2 This is a schematic diagram of a method for controlling the outlet air temperature of an air conditioner, provided in an embodiment of this disclosure.

[0019] Figure 3 This is a schematic diagram of another method for controlling the outlet air temperature of an air conditioner, provided in an embodiment of this disclosure;

[0020] Figure 4 This is a schematic diagram of another method for controlling the outlet air temperature of an air conditioner, provided in an embodiment of this disclosure;

[0021] Figure 5 This is a schematic diagram of another method for controlling the outlet air temperature of an air conditioner, provided in an embodiment of this disclosure;

[0022] Figure 6 This is a schematic diagram of a device for controlling the outlet air temperature of an air conditioner, provided in an embodiment of this disclosure;

[0023] Figure 7 This is a schematic diagram of an air conditioner provided in an embodiment of this disclosure.

[0024] Figure label:

[0025] 11: Compressor; 12: Four-way valve; 13: Indoor heat exchanger; 14: Throttling valve; 15: Outdoor heat exchanger; 21: First solenoid valve; 22: Second solenoid valve. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] Unless otherwise stated, the term "multiple" means two or more.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] Combination Figure 1 As shown, the air conditioning system includes a compressor 11, a four-way valve 12, an indoor heat exchanger 13, a throttle valve 14, and an outdoor heat exchanger 15. The compressor 11, four-way valve 12, indoor heat exchanger 13, throttle valve 14, and outdoor heat exchanger 15 are connected sequentially via piping to form a refrigerant circulation loop. A first solenoid valve 21 and a second solenoid valve 22 are respectively installed on the discharge and return pipes of the compressor 11. Adjusting the opening of the first solenoid valve 21 changes the discharge refrigerant pressure of the compressor 11. Adjusting the opening of the first solenoid valve 21 and the second solenoid valve 22 changes the gas-liquid ratio of the refrigerant returning to the compressor 11. In heating mode, the gas-liquid ratio of the returning refrigerant refers to the gas-liquid ratio of the refrigerant flowing from the outdoor heat exchanger 15 back to the compressor 11. Adjusting the throttle valve 14 changes the refrigerant flow rate.

[0033] Combination Figure 2 As shown in the figure, this disclosure provides a method for controlling the outlet air temperature of an air conditioner, including:

[0034] S101, the processor responds to the air conditioner's operating command and obtains the current air outlet temperature and the preset air outlet temperature.

[0035] S102, the processor determines the target temperature of the indoor unit coil based on the first temperature difference between the preset outlet air temperature and the current outlet air temperature.

[0036] S103, the processor determines the target value of the air conditioning parameters corresponding to the first temperature difference based on the correspondence between the temperature difference and the air conditioning parameters. These air conditioning parameters include the compressor operating frequency, the compressor discharge refrigerant pressure, the refrigerant flow rate, and the gas-liquid ratio of the refrigerant returning to the compressor.

[0037] S104, the processor adjusts the air conditioning parameters sequentially to the target value so that the indoor unit coil temperature reaches the target temperature.

[0038] Here, the air conditioner starts operating in response to a running command. A temperature sensor detects and obtains the current air outlet temperature at the air conditioner's vent, and simultaneously, obtains the preset air outlet temperature. The preset air outlet temperature can be determined based on the target temperature set by the user when the air conditioner is started. A first temperature difference between the preset air outlet temperature and the current air outlet temperature is calculated, and the target temperature of the indoor unit's coil is determined based on this first temperature difference. Specifically, when the air conditioner is operating in heating mode, the first temperature difference is the difference between the preset air outlet temperature and the current air outlet temperature. When the air conditioner is operating in cooling mode, the first temperature difference is the difference between the current air outlet temperature and the preset air outlet temperature. That is, the first temperature difference is a positive value. There is a mapping relationship between the first temperature and the indoor unit's coil temperature; the target temperature of the indoor unit's coil temperature can be obtained by looking up a table. Alternatively, the first temperature and the indoor unit's coil temperature have a non-linear relationship; the corresponding target temperature can be determined based on this non-linear relationship.

[0039] Furthermore, based on the correspondence between temperature difference and air conditioning parameters, the target value corresponding to the first temperature difference is determined, and adjustments are made sequentially according to a preset order. Taking the air conditioning heating mode as an example, the larger the first temperature difference, the lower the indoor temperature. In this case, the air conditioning parameters should be higher to increase the temperature of the indoor unit's coil. Specifically, the larger the first temperature difference, the higher the compressor operating frequency, the higher the compressor's exhaust refrigerant pressure, the faster the refrigerant flow rate, and the higher the gas-liquid ratio of the refrigerant returning to the compressor, and these adjustments are made sequentially. In this way, the air conditioning performance can be quickly adjusted to the target temperature, thereby achieving the regulation of the outlet air temperature.

[0040] The method for controlling the air outlet temperature of an air conditioner, as provided in this embodiment, determines the corresponding compressor operating frequency, compressor discharge refrigerant pressure, refrigerant flow rate, and target value of the refrigerant return gas-liquid ratio based on a first temperature difference between the current air outlet temperature and a preset air outlet temperature. These parameters are then adjusted sequentially to achieve the target values. In this way, the air conditioner's performance can be rapidly adjusted according to these parameters, ensuring that the indoor unit coil temperature meets the target temperature corresponding to the first temperature difference. This, in turn, guarantees precise adjustment of the air outlet temperature, contributing to energy conservation.

[0041] Optionally, in step S102, the processor determines the target temperature of the indoor unit coil based on the first temperature difference between the preset outlet air temperature and the current outlet air temperature, including:

[0042] In heating mode, the greater the initial temperature difference between the preset air outlet temperature and the current air outlet temperature, the higher the target temperature of the indoor unit coil.

[0043] In cooling mode, the greater the temperature difference between the preset air outlet temperature and the current air outlet temperature, the lower the target temperature of the indoor unit's coil.

[0044] Here, the indoor unit coil temperature exhibits different trends with the first temperature difference depending on the air conditioner's operating mode. In heating mode, a larger first temperature difference indicates a lower current outlet air temperature. Therefore, the target temperature of the indoor unit coil is higher, thereby increasing the outlet air temperature and bringing it closer to the preset outlet air temperature. In cooling mode, a larger first temperature difference indicates a higher current outlet air temperature. Therefore, the target temperature of the indoor unit coil is lower, thereby reducing the outlet air temperature to reach the preset outlet air temperature.

[0045] Optionally, in step S104, the processor sequentially adjusts the air conditioning parameters to the target values, including:

[0046] The processor adjusts the compressor's operating frequency to the target operating frequency.

[0047] The processor adjusts the opening of the first solenoid valve to the first target opening so that the compressor's discharge refrigerant pressure reaches the target pressure.

[0048] The processor adjusts the throttle valve to the second target opening to make the refrigerant flow rate reach the target speed.

[0049] The processor adjusts the opening of the second solenoid valve to the third target opening so that the gas-liquid ratio of the refrigerant returning to the compressor reaches the target gas-liquid ratio.

[0050] Here, the air conditioner parameters are adjusted sequentially, with the next parameter adjusted only after the previous one reaches its target value. This adjustment sequence is the optimal sequence determined based on energy efficiency standards. Some air conditioner parameters require adjustment of corresponding air conditioner components to achieve the target value. Specifically, after the compressor frequency reaches the target operating frequency, the compressor discharge refrigerant pressure is only related to the opening degree of the first solenoid valve on the compressor discharge line. The larger the opening degree of the first solenoid valve, the lower the discharge refrigerant pressure. The smaller the opening degree, the higher the discharge refrigerant pressure. With the compressor frequency and the first solenoid valve parameters fixed, the refrigerant flow rate mainly depends on the opening degree of the throttle valve. The smaller the throttle valve opening degree, the faster the refrigerant flow rate. Similarly, with the compressor and first solenoid valve parameters fixed, the gas-liquid ratio of the refrigerant in the return line is mainly related to the opening degree of the second solenoid valve on the compressor return line. By adjusting the second solenoid valve, the return refrigerant pressure is changed, thereby adjusting the gas-liquid ratio. With the first solenoid valve opening unchanged, the larger the opening degree of the second solenoid valve, the larger the gas-liquid ratio.

[0051] In some embodiments, after the compressor operating frequency and discharge refrigerant pressure have successively reached their target values, the gas-liquid ratio can be adjusted to the target gas-liquid ratio by regulating the first and second solenoid valves. The smaller the opening of the first solenoid valve and the larger the opening of the second solenoid valve, the larger the gas-liquid ratio. It should be noted that sequentially adjusting parameters to the target value means adjusting the compressor operating frequency to the target value first, and then adjusting the discharge refrigerant pressure. If the compressor operating frequency deviates from the target value when adjusting the discharge refrigerant pressure, the compressor operating frequency is not monitored. This avoids repeatedly adjusting one or a few parameters. Repeatedly adjusting some parameters will forcibly increase the load on the air conditioning system, which is not conducive to the system achieving optimal performance and results in energy waste.

[0052] Optionally, the correspondence between temperature difference and air conditioning parameters is shown in Table 1. This table represents the corresponding values ​​of air conditioning parameters under different temperature differences, determined through multiple experiments. Specifically, as the temperature difference increases, the values ​​of each air conditioning parameter also increase.

[0053] Table 1. Correspondence between temperature difference and air conditioning parameters

[0054]

[0055] Combination Figure 3 As shown in the embodiments of this disclosure, another method for controlling the outlet air temperature of an air conditioner is provided, including:

[0056] S201, the processor responds to the air conditioner's operating command and obtains the current air outlet temperature and the preset air outlet temperature.

[0057] S202, the processor determines the target temperature of the indoor unit coil based on the first temperature difference between the preset outlet air temperature and the current outlet air temperature.

[0058] S203, the processor determines the target value of the air conditioning parameters corresponding to the first temperature difference based on the correspondence between the temperature difference and the air conditioning parameters. These air conditioning parameters include the compressor operating frequency, the compressor discharge refrigerant pressure, the opening degree of the throttle valve, and the gas-liquid ratio of the compressor return refrigerant.

[0059] S204, the processor sequentially adjusts the air conditioning parameters to the target values ​​so that the indoor unit coil temperature reaches the target temperature.

[0060] S205, the processor obtains the current temperature of the indoor unit's coil.

[0061] S206: If the current temperature of the indoor unit coil has not reached the target temperature, the processor will adjust the values ​​of the air conditioning parameters according to the current temperature and the target temperature in sequence so that the indoor unit coil temperature reaches the target temperature.

[0062] Here, after the air conditioning parameters are adjusted, the current temperature of the indoor unit's coil is detected by a temperature sensor to confirm whether the indoor unit's coil temperature has reached the target temperature. If the target temperature has not been reached, the air conditioning parameters need to be adjusted sequentially based on the current temperature and the target temperature. Specifically, the air conditioning parameters are adjusted in the order described above: in heating mode, the air conditioning parameter values ​​are increased to raise the indoor unit's coil temperature; in cooling mode, the air conditioning parameter values ​​are increased to lower the indoor unit's coil temperature.

[0063] Combination Figure 4 As shown in the embodiments of this disclosure, another method for controlling the outlet air temperature of an air conditioner is provided, including:

[0064] S301, the processor responds to the air conditioner's operating instructions and obtains the current air outlet temperature and the preset air outlet temperature.

[0065] S302, the processor determines the target temperature of the indoor unit coil based on the first temperature difference between the preset outlet air temperature and the current outlet air temperature.

[0066] S303, the processor determines the target value of the air conditioning parameters corresponding to the first temperature difference based on the correspondence between the temperature difference and the air conditioning parameters. These air conditioning parameters include the compressor operating frequency, the compressor discharge refrigerant pressure, the opening degree of the throttle valve, and the gas-liquid ratio of the compressor return refrigerant.

[0067] S304, the processor sequentially adjusts the air conditioning parameters to the target value so that the indoor unit coil temperature reaches the target temperature.

[0068] S305, the processor obtains the current temperature of the indoor unit's coil.

[0069] S306: If the current temperature of the indoor unit coil has not reached the target temperature, the processor will adjust the values ​​of the air conditioning parameters according to the current temperature and the target temperature in sequence so that the indoor unit coil temperature reaches the target temperature.

[0070] S307: When the indoor unit coil temperature reaches the target temperature, the processor obtains the current values ​​of the air conditioning parameters.

[0071] S308, the processor updates the correspondence between temperature difference and air conditioning parameters based on the current values ​​of the air conditioning parameters.

[0072] Here, after correcting the air conditioning parameters and ensuring the indoor unit coil temperature reaches the target temperature, the current values ​​of the air conditioning parameters are obtained. Based on these current values, the correspondence between the temperature difference and the air conditioning parameters is updated. Since this correspondence is based on data from multiple tests, the values ​​of these parameters may fluctuate in real-world applications. Therefore, after correcting the air conditioning parameters, the corrected parameter values ​​are recorded, and the correspondence between the temperature difference and the air conditioning parameters is updated based on this recorded data. Taking the compressor operating frequency in Table 1 as an example, when the temperature difference is 1, the compressor operating frequency is f1. In actual adjustment, the compressor operating frequency is corrected to f1', and the compressor operating frequency f1 in Table 1 is replaced with f1'. Thus, through multiple adjustments, the correspondence between the temperature difference and the air conditioning parameters becomes more closely aligned with actual operating conditions, resulting in higher control precision.

[0073] Combination Figure 5 As shown in the embodiments of this disclosure, another method for controlling the outlet air temperature of an air conditioner is provided, including:

[0074] S401, the processor responds to the air conditioner's operating command and obtains the current air outlet temperature and the preset air outlet temperature.

[0075] S402, the processor determines the target temperature of the indoor unit coil based on the first temperature difference between the preset outlet air temperature and the current outlet air temperature.

[0076] S403, the processor determines the target value of the air conditioning parameters corresponding to the first temperature difference based on the correspondence between the temperature difference and the air conditioning parameters. These air conditioning parameters include the compressor operating frequency, the compressor discharge refrigerant pressure, the opening degree of the throttle valve, and the gas-liquid ratio of the compressor return refrigerant.

[0077] S404, the processor sequentially adjusts the air conditioning parameters to the target value so that the indoor unit coil temperature reaches the target temperature.

[0078] S405, the processor obtains the current temperature of the indoor unit's coil.

[0079] S406: If the current temperature of the indoor unit coil has not reached the target temperature, the processor will adjust the values ​​of the air conditioning parameters according to the current temperature and the target temperature in sequence so that the indoor unit coil temperature reaches the target temperature.

[0080] S407: When the current temperature of the indoor unit coil reaches the target temperature, the processor re-obtains the air outlet temperature of the air conditioner.

[0081] S408, if the reacquired outlet air temperature does not reach the preset outlet air temperature, the processor calculates a second temperature difference between the preset outlet air temperature and the reacquired outlet air temperature.

[0082] S409, the processor corrects the values ​​of the air conditioning parameters sequentially according to the second temperature difference and the first temperature difference in a preset order.

[0083] Here, after the indoor unit coil temperature reaches the target temperature, the air outlet temperature of the air conditioner is acquired again. If the outlet temperature reaches the preset outlet temperature, the air conditioner parameter values ​​are maintained. If the outlet temperature does not reach the preset outlet temperature, a second difference between the outlet temperature and the preset outlet temperature is acquired. The air conditioner parameter values ​​are then adjusted based on the first and second temperature differences. Since the air conditioner parameters correspond to temperature differences, specifically the difference between the initial air outlet temperature and the preset outlet temperature, the air conditioner parameter values ​​are adjusted based on both the first and second temperature differences.

[0084] Optionally, in step S409, the processor corrects the values ​​of the air conditioning parameters sequentially according to a preset order based on the second temperature difference and the first temperature difference, including:

[0085] The processor calculates the sum of the first and second temperature differences to obtain the third temperature difference.

[0086] The processor determines the correction value of the air conditioning parameter corresponding to the third temperature difference based on the correspondence between the temperature difference and the air conditioning parameters.

[0087] The processor corrects the air conditioning parameters to the corrected values ​​in a preset order.

[0088] Here, after adjusting the air conditioner parameters, the outlet air temperature still did not reach the preset outlet air temperature, and there was a second temperature difference between the two. This indicates that the outlet air temperature obtained at the initial stage of air conditioner startup may be inaccurate. Therefore, a third temperature difference is obtained based on the first and second temperature differences. Then, based on the correspondence in Table 1, the correction value of the air conditioner parameters corresponding to the third temperature difference is determined, and corrections are made sequentially according to a preset order. As an example, the first temperature difference is 3℃, and the second temperature difference is 1℃. The corrected air conditioner parameters are then determined based on the third temperature difference of 4℃. This makes the adjustment of the outlet air temperature more precise. Furthermore, it should be noted that the target temperature of the indoor unit coil also changes with the temperature difference; that is, the corrected target temperature of the indoor unit coil is the indoor unit coil temperature corresponding to the third temperature difference.

[0089] This disclosure provides an apparatus for controlling the outlet air temperature of an air conditioner, including an acquisition module, a first determination module, a second determination module, and an adjustment module. The acquisition module is configured to acquire the current outlet air temperature and a preset outlet air temperature in response to an air conditioner operating command. The first determination module is configured to determine a target temperature for the indoor unit coil based on a first temperature difference between the preset outlet air temperature and the current outlet air temperature. The second determination module is configured to determine a target value for the air conditioner parameter corresponding to the first temperature difference based on the correspondence between the temperature difference and air conditioner parameters. The adjustment module is configured to sequentially adjust the air conditioner parameters to the target values ​​to bring the indoor unit coil temperature to the target temperature. The air conditioner parameters include the compressor operating frequency, the compressor discharge refrigerant pressure, the opening degree of the throttle valve, and the gas-liquid ratio of the compressor return refrigerant.

[0090] The device for controlling the air outlet temperature of an air conditioner, as provided in this embodiment, determines the corresponding compressor operating frequency, compressor discharge refrigerant pressure, throttle valve opening, and target value for the compressor return refrigerant gas-liquid ratio based on a first temperature difference between the current air outlet temperature and a preset air outlet temperature. These parameters are then adjusted sequentially to achieve the target values. In this way, the air conditioner's performance can be rapidly adjusted according to these parameters, ensuring that the indoor unit coil temperature meets the target temperature corresponding to the first temperature difference. This, in turn, guarantees precise adjustment of the air outlet temperature, contributing to energy conservation.

[0091] Combination Figure 6 As shown, this disclosure provides an apparatus 200 for controlling the outlet air temperature of an air conditioner, including a processor 100 and a memory 101. Optionally, the apparatus 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 method for controlling the outlet air temperature of the air conditioner described in the above embodiment.

[0092] 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.

[0093] 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, that is, it implements the method for controlling the air conditioner outlet temperature in the above embodiments.

[0094] 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.

[0095] Combination Figure 7 As shown, this disclosure provides an air conditioner 300, including: an air conditioner body and the aforementioned device 200 for controlling the air conditioner outlet temperature. The device 200 for controlling the air conditioner outlet temperature is installed in the air conditioner body. The installation relationship described herein is not limited to placement inside the product, but also includes installation connections with other components of the product, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the device 200 for controlling the air conditioner outlet temperature can be adapted to feasible product bodies to achieve other feasible embodiments.

[0096] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling the outlet air temperature of an air conditioner.

[0097] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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 controlling the outlet air temperature of an air conditioner, characterized in that, The compressor's discharge pipe is equipped with a first solenoid valve, and the return pipe is equipped with a second solenoid valve; the method includes: In response to the air conditioner's operating commands, obtain the current air outlet temperature and the preset air outlet temperature; The target temperature of the indoor unit coil is determined based on the first temperature difference between the preset air outlet temperature and the current air outlet temperature. Based on the correspondence between temperature difference and air conditioning parameters, determine the target value of the air conditioning parameter corresponding to the first temperature difference; The air conditioning parameters are adjusted sequentially to the target values ​​so that the indoor unit coil temperature reaches the target temperature. The adjustment order of the air conditioning parameters is as follows: compressor operating frequency, compressor exhaust refrigerant pressure, refrigerant flow rate, and gas-liquid ratio of compressor return refrigerant. Adjusting the air conditioning parameters to the target values ​​sequentially includes: adjusting the compressor operating frequency to the target operating frequency; adjusting the opening of the first solenoid valve to the first target opening to make the compressor's discharge refrigerant pressure reach the target pressure; adjusting the throttle valve to the second target opening to make the refrigerant flow speed reach the target speed; adjusting the opening of the second solenoid valve to the third target opening, or adjusting the first solenoid valve and the second solenoid valve to make the gas-liquid ratio of the compressor's return refrigerant reach the target gas-liquid ratio.

2. The method according to claim 1, characterized in that, The step of determining the target temperature of the indoor unit coil based on the first temperature difference between the preset outlet air temperature and the current outlet air temperature includes: In heating mode, the greater the first temperature difference between the preset air outlet temperature and the current air outlet temperature, the higher the target temperature of the indoor unit coil. In cooling mode, the greater the first temperature difference between the preset air outlet temperature and the current air outlet temperature, the lower the target temperature of the indoor unit coil.

3. The method according to claim 1 or 2, characterized in that, After adjusting the air conditioning parameters sequentially to the target value, the method further includes: Get the current temperature of the indoor unit's coil; If the current temperature of the indoor unit coil does not reach the target temperature, the values ​​of the air conditioning parameters are adjusted sequentially according to the current temperature and the target temperature to bring the indoor unit coil temperature to the target temperature.

4. The method according to claim 3, characterized in that, The method further includes: If the current temperature of the indoor unit coil reaches the target temperature, the air outlet temperature of the air conditioner is re-acquired. If the reacquired outlet air temperature does not reach the preset outlet air temperature, then calculate the second temperature difference between the preset outlet air temperature and the reacquired outlet air temperature. The values ​​of the air conditioning parameters are adjusted sequentially based on the second temperature difference and the first temperature difference.

5. The method according to claim 4, characterized in that, Based on the second temperature difference and the first temperature difference, the values ​​of the air conditioning parameters are adjusted sequentially, including: Calculate the sum of the first temperature difference and the second temperature difference to obtain the third temperature difference; Based on the correspondence between temperature difference and air conditioning parameters, determine the correction value of the air conditioning parameters corresponding to the third temperature difference; The air conditioning parameters are corrected sequentially to the corrected values.

6. The method according to claim 3, characterized in that, After sequentially correcting the values ​​of the air conditioning parameters, the method further includes: Once the indoor unit coil temperature reaches the target temperature, obtain the current values ​​of the air conditioning parameters; Update the correspondence between temperature difference and air conditioning parameters based on the current values ​​of the air conditioning parameters.

7. A device for controlling the outlet air temperature of an air conditioner, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to, when running the program instructions, execute the method for controlling the air outlet temperature of an air conditioner as described in any one of claims 1 to 6.

8. An air conditioner, characterized in that, include: Air conditioner unit; The device for controlling the air outlet temperature of an air conditioner 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 controlling the air outlet temperature of the air conditioner as described in any one of claims 1 to 6.

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