Air conditioner control method, control device, air conditioner and storage medium

Abstract

The present invention discloses a control method, control device, air conditioner, and storage medium for an air conditioner. The control method includes obtaining an outdoor ambient temperature; controlling the air conditioner to enter or exit a high-temperature cooling mode based on the outdoor ambient temperature and the current operating mode of the air conditioner; and when the air conditioner enters the high-temperature cooling mode, controlling the air conditioner's outdoor fan to operate at a first speed, the air conditioner's compressor to operate at a first frequency, and limiting the opening of the air conditioner's electronic expansion valve to between a lower limit opening and a maximum opening. The present invention maintains multiple air conditioning parameters in a fixed state while making a single adjustment to the electronic expansion valve, thereby ensuring cooling performance.

Description

Technical Field

[0001] This invention relates to the field of air conditioning equipment technology, and in particular to a control method, control device, air conditioner, and storage medium for an air conditioner. Background Technology

[0002] In modern society, due to economic development and industrial growth, air conditioners have become commonplace in households. However, due to differences in outdoor temperatures across regions, some areas frequently experience extreme high temperatures in summer. Furthermore, as people increasingly prioritize the aesthetics of their homes' exteriors, air conditioner outdoor units are often installed in poorly ventilated grilles or corners. This results in higher operating temperatures for the outdoor units, leading to reduced cooling efficiency or malfunction.

[0003] In existing technology, when an air conditioner detects that the ambient temperature of the outdoor unit is high, it will generally reduce the frequency or shut down, resulting in poor cooling effect or failure to cool. Summary of the Invention

[0004] The main objective of this invention is to provide a control method, control device, air conditioner, and storage medium for an air conditioner, aiming to improve the technical problem of poor cooling performance of existing air conditioners in high-temperature environments.

[0005] An embodiment of the present invention provides a control method for an air conditioner, comprising:

[0006] Obtain the outdoor ambient temperature;

[0007] Based on the outdoor ambient temperature and the current operating mode of the air conditioner, control the air conditioner to enter or exit the high-temperature cooling mode;

[0008] When the air conditioner enters the high-temperature cooling mode, the outdoor fan of the air conditioner is controlled to run at a first speed, the compressor of the air conditioner is controlled to run at a first frequency, and the opening of the electronic expansion valve of the air conditioner is limited to between the lower limit opening and the maximum opening.

[0009] In some embodiments of the present invention, when the air conditioner enters the high-temperature cooling mode, the control method of the air conditioner further includes:

[0010] The lower limit opening is determined based on the reference opening of the electronic expansion valve and the outdoor ambient temperature.

[0011] In some embodiments of the present invention, when the air conditioner enters the high-temperature cooling mode, limiting the opening of the electronic expansion valve of the air conditioner to between the lower limit opening and the maximum opening includes:

[0012] After the external fan runs at the first speed for a first preset time period, the opening of the electronic expansion valve is adjusted between the lower limit opening and the maximum opening based on the exhaust temperature of the air conditioner and the condenser coil temperature.

[0013] In some embodiments of the present invention, adjusting the opening of the electronic expansion valve between the lower limit opening and the maximum opening based on the exhaust temperature of the air conditioner and the condenser coil temperature includes:

[0014] The opening of the electronic expansion valve is adjusted between the lower limit and the maximum opening based on the exhaust temperature and the condenser coil temperature, until the exhaust temperature is in the first temperature range and the condenser coil temperature is in the second temperature range, at which point the current opening is maintained.

[0015] In some embodiments of the present invention, after the outdoor fan operates at the first speed for a first preset time period, the control method of the air conditioner includes:

[0016] The target exhaust temperature of the electronic expansion valve is determined based on the operating frequency of the compressor, the rotational speed of the external fan, and the temperature of the condenser coil.

[0017] The first temperature range is determined based on the target exhaust temperature;

[0018] The second temperature range is determined based on the shutdown temperature of the air conditioner.

[0019] In some embodiments of the present invention, the control method for an air conditioner further includes:

[0020] After the external fan starts running at the first speed and before it reaches the first preset time period, the electronic expansion valve is controlled to operate at a first opening degree, which is located between the lower limit opening degree and the maximum opening degree.

[0021] In some embodiments of the present invention, controlling the outdoor fan of the air conditioner to operate at a first speed and the compressor of the air conditioner to operate at a first frequency includes...

[0022] When the air conditioner directly enters the high-temperature cooling mode from the off state, the outdoor fan is controlled to start running at a first speed for a second preset time period, and then the compressor is controlled to start running at a first frequency.

[0023] In some embodiments of the present invention, controlling the air conditioner to enter or exit a high-temperature cooling mode based on the outdoor ambient temperature and the current operating mode of the air conditioner includes:

[0024] If the outdoor ambient temperature is greater than the first preset temperature, and the current operating mode of the air conditioner is the high temperature operating mode, then control the air conditioner to maintain the high temperature operating mode;

[0025] If the outdoor ambient temperature is greater than the first preset temperature, and the current operating mode of the air conditioner is the normal operating mode, then the air conditioner is controlled to enter the high temperature operating mode;

[0026] If the outdoor ambient temperature is lower than the second preset temperature, and the current operating mode of the air conditioner is the high-temperature operating mode, then the air conditioner is controlled to exit the high-temperature operating mode, and the first preset temperature is higher than the second preset temperature.

[0027] In some embodiments of the present invention, a control device for an air conditioner is also provided, comprising:

[0028] The acquisition module is used to acquire the outdoor ambient temperature.

[0029] The control module is used to control the outdoor fan of the air conditioner to run at a first speed and the compressor of the air conditioner to run at a first frequency when the air conditioner enters the high-temperature cooling mode, and to limit the opening of the electronic expansion valve of the air conditioner to between the lower limit opening and the maximum opening.

[0030] In some embodiments of the present invention, an air conditioner is also provided, including a memory and a processor. The memory stores a computer program, and the processor is used to run the computer program in the memory to perform the steps in the above-described air conditioner control method.

[0031] In some embodiments of the present invention, a storage medium is also provided, the storage medium storing a computer program, the computer program being executed and loaded by a processor to perform the steps in the above-described air conditioner control method.

[0032] The present invention provides an air conditioner control method, control device, air conditioner and storage medium. The air conditioner control method includes controlling the air conditioner to enter or exit a high-temperature cooling mode according to the outdoor ambient temperature. When the air conditioner enters the high-temperature cooling mode, the compressor runs at a first frequency, the outdoor fan runs at a first speed, and the opening of the air conditioner's electronic expansion valve is limited between the lower limit opening and the maximum opening. By keeping multiple air conditioning parameters running at a fixed speed, the electronic expansion valve is adjusted individually to ensure cooling performance. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0034] Figure 1 This is a flowchart illustrating a control method for an air conditioner according to an embodiment of the present invention.

[0035] Figure 2 This is a schematic diagram of the structure of a control device for an air conditioner according to an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the structure of an air conditioner according to an embodiment of the present invention.

[0037] Reference numerals: 10, control device; 100, acquisition module; 200, control module; 601, processor; 602, memory; 603, power supply; 604, input unit. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0042] like Figure 1-3 As shown, the present invention provides a control method for an air conditioner, comprising:

[0043] S200, obtains the outdoor ambient temperature.

[0044] The outdoor ambient temperature here refers to the temperature of the environment where the outdoor unit of the air conditioner is located. It is usually obtained through a temperature sensor installed on the outdoor unit.

[0045] The outdoor ambient temperature here can be acquired in real time, meaning it is continuously monitored and fed back to the air conditioner's control center. Alternatively, the outdoor ambient temperature can be acquired intermittently, such as every five minutes.

[0046] The system also allows setting the time for acquiring outdoor ambient temperature. For example, in a 24-hour period, the outdoor ambient temperature can be continuously monitored during the eight-hour period from 12:00 to 20:00, while intermittent monitoring is used during the remaining time periods.

[0047] S300 controls the air conditioner to enter or exit the high-temperature cooling mode based on the outdoor ambient temperature and the current operating mode of the air conditioner.

[0048] Air conditioner operating modes generally include high-temperature cooling mode and normal operating mode. By setting certain thresholds, the air conditioner enters high-temperature cooling mode when a certain threshold is met, and exits high-temperature cooling mode and enters normal operating mode when the temperature falls below a certain threshold.

[0049] The temperature threshold for the air conditioner to enter high-temperature mode and the temperature threshold for exiting high-temperature mode can be the same temperature or different temperatures.

[0050] S400, when the air conditioner enters the high-temperature cooling mode, controls the outdoor fan of the air conditioner to run at a first speed, controls the compressor to run at a first frequency, and limits the opening of the electronic expansion valve of the air conditioner to between the lower limit opening and the maximum opening.

[0051] When the air conditioner enters the high-temperature cooling mode, the outdoor fan operates at the first speed, which is greater than or equal to the maximum speed in the normal cooling mode.

[0052] When the air conditioner enters the high-temperature cooling mode, the compressor operates at a primary frequency, which is generally a low to medium frequency, such as within 30-40 Hz. Typically, this primary frequency is lower than the compressor frequency during normal cooling mode.

[0053] The lower limit opening is the minimum opening that the electronic expansion valve can close to when the air conditioner is in high-temperature cooling mode.

[0054] The maximum opening is the maximum opening of the electronic expansion valve in cooling mode.

[0055] Based on the above description, it can be understood that when the air conditioner enters the high-temperature cooling mode, the compressor operates at the first frequency, the outdoor fan operates at the first speed, and the opening of the electronic expansion valve is limited between the lower limit and the maximum opening. By keeping multiple air conditioning parameters running at a fixed speed, the electronic expansion valve is adjusted individually, thereby ensuring cooling performance. Compared to controlling multiple parameters simultaneously, this invention only regulates a single parameter, which will not affect the stable operation of the air conditioner and avoids a decrease in cooling effect caused by fluctuations in air conditioner operation.

[0056] In some embodiments, when the air conditioner enters a high-temperature cooling mode, the control method for the air conditioner further includes:

[0057] S410 determines the lower limit opening based on the reference opening of the electronic expansion valve and the outdoor ambient temperature.

[0058] The lower limit opening is used to determine the lower limit opening of the electronic expansion valve in high-temperature cooling mode. When the opening of the electronic expansion valve decreases, the condensing pressure increases, and the exhaust temperature and condenser coil temperature also increase. Therefore, the purpose of setting the lower limit opening of the electronic expansion valve is to ensure that the air conditioner does not exceed the reliability safety boundary under high-temperature conditions.

[0059] The lower limit opening of the electronic expansion valve is determined as follows: P1 = P0 + (T w -T1)×A; P1 is the lower limit opening, P0 is the reference opening of the electronic expansion valve; T wThe outdoor ambient temperature is represented by T0; T1 is a preset temperature; T1 serves as a reference value, and when the outdoor ambient temperature is greater than T1, the air conditioner enters high-temperature cooling mode; A is a coefficient determined by the system; for example: P0 = 350, T... w =61℃, T1=60℃, A=10, then P1=360.

[0060] P0 and A are both determined experimentally and are fixed values ​​to ensure that the lower limit opening is only related to the outdoor ambient temperature.

[0061] In some embodiments, step S400, when the air conditioner enters the high-temperature cooling mode, restricts the opening of the air conditioner's electronic expansion valve to between the lower limit opening and the maximum opening, including:

[0062] S480, after the outdoor fan runs at the first speed for the first preset time period, adjusts the opening of the electronic expansion valve between the lower limit and the maximum opening based on the exhaust temperature of the air conditioner and the condenser coil temperature.

[0063] The outdoor fan starts when the air conditioner enters the high-temperature cooling mode. Its operation for a first preset time period (representing the first preset time period after entering the high-temperature cooling mode) is followed by adjusting the opening of the electronic expansion valve between the lower limit and the maximum opening based on the air conditioner's exhaust temperature and condenser coil temperature. In other words, only after entering the high-temperature cooling mode and continuing for the first preset time period does the electronic expansion valve's opening control logic adjust the valve's opening between the lower limit and the maximum opening based on the air conditioner's exhaust temperature and condenser coil temperature.

[0064] Both the exhaust temperature and the condenser coil temperature can be obtained through temperature sensors located at corresponding positions on the outdoor unit. When entering high-temperature cooling mode, the exhaust temperature and condenser coil temperature can be obtained through the temperature sensors at the corresponding positions and fed back to the air conditioner's control center.

[0065] When the electronic expansion valve adjusts according to the exhaust temperature and the condenser coil temperature, it does so based on the real-time exhaust temperature and the real-time condenser coil temperature.

[0066] In some embodiments, step S480, adjusting the opening of the electronic expansion valve between a lower limit and a maximum opening based on the exhaust temperature of the air conditioner and the condenser coil temperature, includes:

[0067] The opening of the electronic expansion valve is adjusted between the lower limit and the maximum opening based on the exhaust temperature and the condenser coil temperature, until the exhaust temperature is in the first temperature range and the condenser coil temperature is in the second temperature range, at which point the current opening is maintained.

[0068] Wherein, the exhaust temperature is T 排气The exhaust temperature is within the first temperature range: T a ≤T 排气 ≤T b .

[0069] The condenser coil temperature is T. 盘管 The condenser coil temperature is in the second temperature range: T c ≤T 盘管 ≤T d .

[0070] It is understandable that when the exhaust temperature is within the first temperature range and the condenser coil temperature is within the second temperature range, the air conditioner is in a state with good cooling effect. Therefore, it is sufficient to keep the electronic expansion valve in this opening state.

[0071] In some embodiments, after the outdoor fan has been running at a first speed for a first preset time period, the control method for the air conditioner further includes:

[0072] S420 determines the target discharge temperature of the electronic expansion valve based on the compressor's operating frequency, the outdoor fan's speed, and the condenser coil temperature.

[0073] In the high-temperature cooling mode, the compressor operates at the first frequency and the outdoor fan operates at the first speed. The operating frequency of the compressor and the speed of the outdoor fan are both fixed values. Under the condition that the shutdown temperature does not exceed the condenser coil temperature, there is an exhaust temperature that can make the air conditioner cool best, which is the target exhaust temperature.

[0074] Among them, the target exhaust temperature T 目标 .

[0075] S430, determine the first temperature range based on the target exhaust temperature;

[0076] Since it is impossible to achieve a constant exhaust temperature in practice, the actual meaning of "exhaust temperature within the first temperature range" is that the exhaust temperature is allowed to have a certain degree of difference from the target exhaust temperature. Therefore, T a =T 排气 -A、T b =T 排气 +B, where AB are constants, determined experimentally, and pre-stored in the air conditioner's control center. The exhaust temperature is within the first temperature range: T 排气 -A≤T 排气 ≤T 排气 +B.

[0077] In some embodiments, A = B.

[0078] S440 determines the second temperature range based on the air conditioner's off-temperature.

[0079] The air conditioner's shutdown temperature is the temperature at which the air conditioner shuts down to cool down and protect its components when the condenser coil temperature reaches a certain level. The air conditioner's shutdown temperature is: T. 停机 .

[0080] Since it's practically impossible to maintain a constant condenser coil temperature, and also impossible to reach the shutdown temperature, the second temperature range for the condenser coil temperature is: T. 停机 -C≤T 盘管 ≤T 停机 -D, C>D.

[0081] In some embodiments, CD = 1.

[0082] Further, in one embodiment, in step S480, the opening of the electronic expansion valve is adjusted between the lower limit opening and the maximum opening based on the exhaust temperature and the condenser coil temperature, until the exhaust temperature is in the first temperature range and the condenser coil temperature is in the second temperature range, at which point the current opening is kept unchanged.

[0083] As can be seen from the above description, the air conditioner has the best cooling effect when the exhaust temperature is within the first temperature range, and the condenser coil temperature has not reached the shutdown temperature.

[0084] In some embodiments, the adjustment method for adjusting the opening of the electronic expansion valve between the lower limit and the maximum opening based on the exhaust temperature and the condenser coil temperature is shown in the table below:

[0085]

[0086] In some embodiments, the control method for an air conditioner further includes:

[0087] S401, after the external fan starts running at the first speed and before the first preset time period, the electronic expansion valve is controlled to operate at the first opening degree, which is between the lower limit opening degree and the maximum opening degree.

[0088] The first opening degree is generally the maximum opening degree. That is, during the first preset time period after entering the high-temperature cooling mode, the electronic expansion valve is operated at its maximum opening degree to avoid the air conditioner's reliability decreasing due to the electronic expansion valve being adjusted too quickly.

[0089] The first preset time period is generally within 10-20 minutes.

[0090] S480, after the outdoor fan runs at the first speed for the first preset time period, adjusts the opening of the electronic expansion valve between the lower limit and the maximum opening based on the exhaust temperature of the air conditioner and the condenser coil temperature.

[0091] In some embodiments, in step S400, when the air conditioner enters the high-temperature cooling mode, controlling the outdoor fan of the air conditioner to run at a first speed and controlling the compressor to run at a first frequency includes:

[0092] When the air conditioner directly enters the high-temperature cooling mode from the off state, the outdoor fan is controlled to start running at the first speed until the second preset time period, and then the compressor is controlled to start running at the first frequency.

[0093] The second preset time period is 35s-45s.

[0094] It should be noted that the shorter the time interval between the start-up of the compressor and the outdoor fan, the faster the cooling speed and the better the cooling effect. However, the higher the pressure rises, the more likely the compressor will fail to start. Therefore, the start-up time of both should not be too long or too short. Thus, the second preset time interval is a value between 35 seconds and 45 seconds.

[0095] In some embodiments, step S300, controlling the air conditioner to enter or exit the high-temperature cooling mode based on the outdoor ambient temperature and the current operating mode of the air conditioner, includes:

[0096] If the outdoor ambient temperature is higher than the first preset temperature, and the air conditioner is currently operating in high temperature mode, then control the air conditioner to maintain high temperature operation mode.

[0097] If the outdoor ambient temperature is higher than the first preset temperature, and the air conditioner is currently in normal operating mode, then the air conditioner will be controlled to enter high temperature operating mode.

[0098] If the outdoor ambient temperature is lower than the second preset temperature, and the air conditioner is currently operating in high temperature mode, then the air conditioner will be controlled to exit high temperature mode, and the first preset temperature will be higher than the second preset temperature.

[0099] Air conditioners typically have a normal operating mode and a high-temperature cooling mode.

[0100] Generally, the difference between the first preset temperature and the second preset temperature is 2℃.

[0101] The first preset temperature is T1, and the second preset temperature is T2.

[0102] In some embodiments, the lower limit opening is determined based on the reference opening of the electronic expansion valve, the outdoor ambient temperature, and a first preset temperature; for example: P1 = P0 + (T w -T1)×A.

[0103] In some embodiments, the shut-off temperature of the air conditioner is generally: T 停机 =T1+10.

[0104] In some embodiments, a control device 10 for an air conditioner is also provided, the control device 10 for the air conditioner comprising:

[0105] The acquisition module 100 is used to acquire the outdoor ambient temperature, the air conditioner's exhaust temperature, and the air conditioner's condenser coil temperature.

[0106] The control module 200 is used to control the air conditioner to enter or exit the high-temperature cooling mode based on the outdoor ambient temperature and the air conditioner's operating mode. The control module 200 is also used to control the air conditioner's compressor to operate at any frequency; and to control the air conditioner's outdoor fan to operate at any speed. The control module 200 is also used to adjust the opening of the air conditioner's electronic expansion valve between its lower limit and maximum opening based on the exhaust temperature and condenser coil temperature.

[0107] The control device 10 of the air conditioner controls the air conditioner to enter or exit the high-temperature cooling mode according to the outdoor ambient temperature. When the air conditioner enters the high-temperature cooling mode, the compressor runs at the first frequency, the outdoor fan runs at the first speed, and the opening of the electronic expansion valve is adjusted between the lower limit and the maximum opening according to the exhaust temperature and the condenser coil temperature. By keeping multiple air conditioning parameters running at a fixed speed, the electronic expansion valve is adjusted individually to ensure the cooling performance.

[0108] In some embodiments, the present invention provides an air conditioner that may include components such as a processor 601 with one or more processing cores, a memory 602 with one or more computer-readable storage media, a power supply 603, and an input unit 604. Those skilled in the art will understand that the above-described structure of the air conditioner does not constitute a limitation on the air conditioner, and it may include more or fewer components, or combine certain components, or have different component arrangements. Wherein:

[0109] The processor 601 is the control center of the air conditioner. It connects to various parts of the air conditioner via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 602, and by calling data stored in the memory 602, it performs various functions and processes data, thereby providing overall monitoring of the air conditioner. Optionally, the processor 601 may include one or more processing cores; preferably, the processor 601 may integrate an application processor 601 and a modem processor 601. The application processor 601 mainly handles the operating system, user interface, and computer programs, while the modem processor 601 mainly handles wireless communication. It is understood that the modem processor 601 may also not be integrated into the processor 601.

[0110] The memory 602 can be used to store software programs and modules. The processor 601 executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory may mainly include a program storage area and a data storage area. The program storage area may store the operating system, computer programs required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the server, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory may also include a memory controller to provide the processor 601 with access to the memory.

[0111] The air conditioner also includes a power supply 603 that supplies power to various components. Preferably, the power supply 603 can be logically connected to the processor 601 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The power supply may also include one or more DC or AC power supplies, a recharging system, a power fault detection circuit, a power converter or inverter, a power status indicator, or any other components.

[0112] The air conditioner may also include an input unit 604, which can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control.

[0113] Although not shown, the air conditioner may also include a display unit, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 601 in the air conditioner loads the executable files corresponding to the processes of one or more computer programs into the memory 602 according to the following instructions, and the processor 601 runs the computer programs stored in the memory 602 to perform the following steps:

[0114] Obtain the outdoor ambient temperature;

[0115] Based on the outdoor ambient temperature and the current operating mode of the air conditioner, control the air conditioner to enter or exit the high-temperature cooling mode.

[0116] When the air conditioner enters the high-temperature cooling mode, the outdoor fan of the air conditioner is controlled to run at the first speed, the compressor of the air conditioner is controlled to run at the first frequency, and the opening of the electronic expansion valve of the air conditioner is limited to between the lower limit and the maximum opening.

[0117] The air conditioner obtains the outdoor ambient temperature and controls the air conditioner to enter or exit the high-temperature cooling mode based on the outdoor ambient temperature. When the air conditioner enters the high-temperature cooling mode, the compressor runs at the first frequency, the outdoor fan runs at the first speed, and the opening of the air conditioner's electronic expansion valve is limited between the lower limit and the maximum opening. By keeping multiple air conditioning parameters running at a fixed speed, the electronic expansion valve is adjusted individually to ensure cooling performance.

[0118] Those skilled in the art will understand that all or part of the steps in any of the methods in the above embodiments can be performed by a computer program or by a computer program controlling related hardware. The computer program can be stored in a computer-readable storage medium and loaded and executed by the processor 601.

[0119] In some embodiments, the present invention provides a storage medium storing a plurality of computer programs that can be loaded by a processor to perform the following steps:

[0120] Obtain the outdoor ambient temperature;

[0121] Based on the outdoor ambient temperature and the current operating mode of the air conditioner, control the air conditioner to enter or exit the high-temperature cooling mode.

[0122] When the air conditioner enters the high-temperature cooling mode, the outdoor fan of the air conditioner is controlled to run at the first speed, the compressor of the air conditioner is controlled to run at the first frequency, and the opening of the electronic expansion valve of the air conditioner is limited to between the lower limit and the maximum opening.

[0123] The air conditioner obtains the outdoor ambient temperature and controls the air conditioner to enter or exit the high-temperature cooling mode based on the outdoor ambient temperature. When the air conditioner enters the high-temperature cooling mode, the compressor runs at the first frequency, the outdoor fan runs at the first speed, and the opening of the air conditioner's electronic expansion valve is limited between the lower limit and the maximum opening. By keeping multiple air conditioning parameters running at a fixed speed, the electronic expansion valve is adjusted individually to ensure cooling performance.

[0124] It will be understood by those skilled in the art that any references to memory, storage, database, or other media used in the embodiments provided by this invention may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM), etc.

[0125] Since the computer program stored in the storage medium can execute the steps in the air conditioning control method in any embodiment of the present invention, the beneficial effects that the air conditioning control method in any embodiment of the present invention can achieve can be realized, as detailed in the preceding embodiments, and will not be repeated here.

[0126] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0127] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the detailed descriptions of other embodiments above, which will not be repeated here.

[0128] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the application concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, include: Obtain the outdoor ambient temperature; Based on the outdoor ambient temperature and the current operating mode of the air conditioner, the air conditioner is controlled to enter a high-temperature cooling mode; When the air conditioner enters the high-temperature cooling mode, the outdoor fan of the air conditioner is controlled to run at a first speed, the compressor of the air conditioner is controlled to run at a first frequency, and the opening of the electronic expansion valve of the air conditioner is limited to between the lower limit opening and the maximum opening. When the air conditioner enters the high-temperature cooling mode, limiting the opening of the air conditioner's electronic expansion valve to between the lower limit and the maximum opening includes: After the outdoor fan runs at the first speed for a first preset time period, the opening of the electronic expansion valve is adjusted between the lower limit opening and the maximum opening based on the exhaust temperature of the air conditioner and the condenser coil temperature. Adjusting the opening of the electronic expansion valve between the lower limit and the maximum opening based on the exhaust temperature and condenser coil temperature of the air conditioner includes: The opening of the electronic expansion valve is adjusted between the lower limit and the maximum opening based on the exhaust temperature and the condenser coil temperature, until the exhaust temperature is in the first temperature range and the condenser coil temperature is in the second temperature range, at which point the current opening is maintained.

2. The control method for an air conditioner according to claim 1, characterized in that, When the air conditioner enters the high-temperature cooling mode, the control method of the air conditioner further includes: determining the lower limit opening degree based on the reference opening degree of the electronic expansion valve and the outdoor ambient temperature.

3. The control method for an air conditioner according to claim 1, characterized in that, After the outdoor fan has been running at the first speed for a first preset time period, the control method for the air conditioner further includes: The target exhaust temperature of the electronic expansion valve is determined based on the operating frequency of the air conditioner's compressor, the speed of the outdoor fan, and the temperature of the condenser coil. The first temperature range is determined based on the target exhaust temperature; The second temperature range is determined based on the shutdown temperature of the air conditioner.

4. The control method for an air conditioner according to claim 1, characterized in that, Air conditioner control methods also include: After the external fan starts running at the first speed and before it reaches the first preset time period, the electronic expansion valve is controlled to operate at a first opening degree, which is located between the lower limit opening degree and the maximum opening degree.

5. The control method for an air conditioner according to any one of claims 1-4, characterized in that, Controlling the outdoor fan of the air conditioner to operate at a first speed and the compressor of the air conditioner to operate at a first frequency includes: When the air conditioner directly enters the high-temperature cooling mode from the off state, the outdoor fan is controlled to start running at a first speed for a second preset time period, and then the compressor is controlled to start running at a first frequency.

6. The control method for an air conditioner according to claim 1, characterized in that, Based on the outdoor ambient temperature and the current operating mode of the air conditioner, control the air conditioner to enter a high-temperature cooling mode, including: If the outdoor ambient temperature is greater than the first preset temperature, and the current operating mode of the air conditioner is the high-temperature cooling mode, then control the air conditioner to maintain the high-temperature cooling mode. If the outdoor ambient temperature is greater than the first preset temperature, and the current operating mode of the air conditioner is normal operating mode, then the air conditioner is controlled to enter the high temperature cooling mode. If the outdoor ambient temperature is lower than the second preset temperature, and the current operating mode of the air conditioner is the high-temperature cooling mode, then the air conditioner is controlled to exit the high-temperature cooling mode, and the first preset temperature is higher than the second preset temperature.

7. A control device for an air conditioner, characterized in that, include: The acquisition module is used to acquire the outdoor ambient temperature. The control module is used to control the outdoor fan of the air conditioner to run at a first speed and the compressor of the air conditioner to run at a first frequency when the air conditioner enters the high-temperature cooling mode, and to limit the opening of the electronic expansion valve of the air conditioner to between the lower limit opening and the maximum opening. It is also used to control the air conditioner to enter a high-temperature cooling mode based on the outdoor ambient temperature and the current operating mode of the air conditioner; It is also used to adjust the opening of the electronic expansion valve between the lower limit opening and the maximum opening based on the exhaust temperature of the air conditioner and the condenser coil temperature after the outdoor fan has been running at the first speed for a first preset time period. It is also used to adjust the opening of the electronic expansion valve between the lower limit opening and the maximum opening based on the exhaust temperature and the condenser coil temperature, until the exhaust temperature is in a first temperature range and the condenser coil temperature is in a second temperature range, and then maintain the current opening unchanged.

8. An air conditioner, characterized in that, The device includes a memory and a processor, the memory storing a computer program, and the processor running the computer program in the memory to perform the steps of the control method for the air conditioner according to any one of claims 1-6.

9. A storage medium, characterized in that, The storage medium stores a computer program, which is executed and loaded by a processor to perform the steps in the control method for the air conditioner according to any one of claims 1-6.

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