One-to-many air conditioner control method, device, storage medium and air conditioner

Abstract

The present invention discloses a method, device, storage medium, and air conditioner for controlling a one-to-multi air conditioner, belonging to the technical field of air conditioner control. Upon detecting that a target indoor unit in the one-to-multi air conditioner is shut down, the present invention obtains operating parameter information indicating that the target indoor unit is in a shut-down state; identifies the target indoor unit whose operating parameter information satisfies preset conditions as the indoor unit to be controlled; intermittently starts the electronic expansion valve of the indoor unit to be controlled, identifies the indoor unit to be controlled based on the operating parameter information, and controls the opening of the electronic expansion valve of the indoor unit to be controlled by intermittently starting the device, thereby preventing the electronic expansion valve from always maintaining a fixed opening, thereby ensuring indoor temperature stability when the air conditioner is heating.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioner control, and in particular to a one-to-many air conditioner control method, device, storage medium and air conditioner. Background Art

[0002] When a multi-unit system is operating in heating mode and one or more indoor units have reached the desired temperature and are shutting down, air flow will continue to ensure accurate temperature readings from the indoor unit's heat exchanger to prevent heat radiation from interfering with the indoor temperature sensor. This prevents the indoor unit's heat exchanger from interfering with the temperature sensor. When one or more indoor units in a multi-unit system reach the desired temperature and shut down, the electronic expansion valves of the corresponding indoor units close. Maintaining air flow will cause the refrigerant in the indoor unit's heat exchanger to condense, accumulating there. This will reduce refrigerant flow throughout the system, leading to insufficient heat generation in other heating units and even system failure.

[0003] The existing technology involves opening the electronic expansion valve of the indoor unit in the shutdown state by a small number of steps. This allows the refrigerant accumulated in the heat exchanger of the indoor unit after condensation to be continuously released to the outdoor unit heat exchanger at a small flow rate, allowing it to re-enter the heating cycle. This prevents a large amount of refrigerant from accumulating in the heat exchanger of the indoor unit in the shutdown state. However, this method still results in a small heating capacity in the indoor unit during the shutdown state, resulting in excessively high indoor temperatures in small, well-insulated rooms.

[0004] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0005] The main purpose of the present invention is to provide a one-to-many air conditioner control method, device, storage medium and air conditioner, aiming to solve the technical problem that the existing technology may cause the indoor temperature of a well-insulated room to be too high.

[0006] To achieve the above object, the present invention provides a method for controlling a one-to-many air conditioner, the method comprising the following steps:

[0007] When detecting that a target indoor unit of the one-to-multi air conditioner system is shut down, obtaining operation parameter information of the target indoor unit in the shut down state;

[0008] The target indoor unit whose operating parameter information meets the preset conditions is used as the indoor unit to be controlled; and

[0009] The electronic expansion valve of the indoor unit to be controlled is intermittently started.

[0010] Optionally, before selecting the target indoor unit whose operating parameter information meets a preset condition as the indoor unit to be controlled, the method further includes:

[0011] Extracting the shutdown duration corresponding to the target indoor unit and the current indoor ambient temperature when the target indoor unit is shut down from the operating parameter information;

[0012] determining a temperature difference according to the initial indoor ambient temperature and the current indoor ambient temperature; and

[0013] When the temperature difference is greater than or equal to a preset difference threshold and the shutdown time is greater than or equal to a preset time, it is determined that the operating parameter information meets the preset condition.

[0014] Optionally, the intermittently starting the electronic expansion valve of the indoor unit to be controlled includes:

[0015] Closing the electronic expansion valve of the indoor unit to be controlled; and

[0016] After the electronic expansion valve is closed, the electronic expansion valve is reopened according to a target time interval, and the opening degree of the electronic expansion valve is adjusted to a first preset opening degree.

[0017] Optionally, after the electronic expansion valve is closed, before reopening the electronic expansion valve at a target time interval and adjusting the opening of the electronic expansion valve to a first preset opening, the method further includes:

[0018] Obtaining the number of indoor units corresponding to the indoor unit to be controlled; and

[0019] The target time interval is determined according to the number of indoor units and preset parameters.

[0020] Optionally, after the electronic expansion valve is closed, before reopening the electronic expansion valve at a target time interval and adjusting the opening of the electronic expansion valve to a first preset opening, the method further includes:

[0021] Obtaining the current compressor frequency of the one-to-many air conditioner;

[0022] comparing the current compressor frequency with a preset compressor frequency; and

[0023] When the current compressor frequency is greater than or equal to the preset compressor frequency, the current compressor frequency is adjusted to the preset compressor frequency.

[0024] Optionally, after comparing the current compressor frequency with a preset compressor frequency, the method further includes:

[0025] When the current compressor frequency is less than the preset compressor frequency, the current compressor frequency is maintained unchanged.

[0026] Optionally, after intermittently starting the electronic expansion valve of the indoor unit to be controlled, the method further includes:

[0027] The opening degree of the electronic expansion valve of the target indoor unit whose operating parameter information does not meet the preset condition is controlled to be maintained at a second preset opening degree.

[0028] In addition, to achieve the above-mentioned purpose, the present invention further proposes a one-to-many air conditioner control device, the one-to-many air conditioner control device comprising:

[0029] a detection module for, when detecting that a target indoor unit of the one-to-multi air conditioner is stopped, obtaining operating parameter information of the target indoor unit in a stopped state;

[0030] A judgment module, configured to select a target indoor unit whose operating parameter information meets a preset condition as an indoor unit to be controlled;

[0031] The control module is used to intermittently start the electronic expansion valve of the indoor unit to be controlled.

[0032] In addition, to achieve the above-mentioned purpose, the present invention also proposes an air conditioner, which includes: a memory, a processor, and a one-to-many air conditioner control program stored on the memory and runnable on the processor, wherein the one-to-many air conditioner control program is configured to implement the one-to-many air conditioner control method described above.

[0033] In addition, to achieve the above-mentioned purpose, the present invention also proposes a storage medium, on which a one-to-many air conditioner control program is stored. When the one-to-many air conditioner control program is executed by a processor, the one-to-many air conditioner control method described above is implemented.

[0034] When detecting that a target indoor unit of a one-to-multi air conditioner has been shut down, the present invention obtains operating parameter information of the target indoor unit in a shut-down state; uses the target indoor unit whose operating parameter information meets preset conditions as the indoor unit to be controlled; intermittently starts the electronic expansion valve of the indoor unit to be controlled, identifies the indoor unit to be controlled through the operating parameter information, and controls the opening of the electronic expansion valve of the indoor unit to be controlled by intermittent starting, thereby preventing the electronic expansion valve from always maintaining a certain opening, and ensuring the stability of the indoor temperature when the air conditioner is heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 1 is a schematic structural diagram of an air conditioner in a hardware operating environment according to an embodiment of the present invention;

[0036] Figure 2 This is a flow chart of a first embodiment of a one-to-many air conditioner control method according to the present invention;

[0037] Figure 3 This is a flow chart of a second embodiment of a one-to-many air conditioner control method according to the present invention;

[0038] Figure 4 This is a structural block diagram of the first embodiment of the one-to-many air conditioner control device of the present invention.

[0039] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0040] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] Reference Figure 1 , Figure 1 This is a schematic diagram of the air conditioner structure of the hardware operating environment involved in the embodiment of the present invention.

[0042] like Figure 1 As shown, the air conditioner may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the user interface 1003 may optionally include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (WI-FI) interface). The memory 1005 may be a high-speed random access memory (RAM) memory, or a stable non-volatile memory (NVM), such as a disk memory. The memory 1005 may optionally be a storage device independent of the aforementioned processor 1001.

[0043] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation to the air conditioner, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0044] like Figure 1 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a one-to-many air conditioner control program.

[0045] exist Figure 1In the air conditioner shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the air conditioner of the present invention can be set in the air conditioner, and the air conditioner calls the one-to-many air conditioner control program stored in the memory 1005 through the processor 1001, and executes the one-to-many air conditioner control method provided by the embodiment of the present invention.

[0046] The embodiment of the present invention provides a method for controlling a one-to-many air conditioner. Figure 2 , Figure 2 This is a flow chart of a first embodiment of a one-to-many air conditioner control method according to the present invention.

[0047] In this embodiment, the one-to-many air conditioner control method includes the following steps:

[0048] Step S10: when it is detected that there is a shut-down target indoor unit in the one-to-many air conditioners, the operating parameter information of the shut-down target indoor unit is obtained.

[0049] It should be noted that the execution subject of this embodiment can be a one-to-many air conditioner control device, and the one-to-many air conditioner control device can be an electronic device such as a personal computer or a server, or can be other controllers and devices that can achieve the same or similar functions. This embodiment does not limit this. In this embodiment and the following embodiments, the one-to-many air conditioner control method of the present invention is explained by taking a one-to-many air conditioner control device as an example.

[0050] It should be noted that to address the issue of the electronic expansion valve of the indoor unit shutting down during temperature shutdown, maintaining air supply will cause refrigerant in the indoor unit's heat exchanger to condense. This condensation will accumulate in the heat exchanger, reducing the refrigerant flow rate in the entire system, leading to insufficient heating in other heating units and even causing the entire unit to malfunction and shut down. The prior art addresses this issue by maintaining the electronic expansion valve of the indoor unit shutting down during temperature shutdown at a relatively low opening. However, it should be emphasized that if the air conditioner shuts down during heating operation, it indicates that the indoor temperature has reached a comfortable temperature or the user's set temperature. In practice, due to the varying construction of different rooms, some rooms have poor insulation, and heating will resume after a brief shutdown. However, other rooms have better insulation, and heating will take a long time to resume after shutdown. If the electronic expansion valve is maintained at a relatively low opening according to the prior art solution, the temperature in the room with better insulation will continue to rise, resulting in high temperatures and seriously affecting user comfort. In this embodiment, in order to solve the above problem, the shutdown status of indoor units in rooms with different thermal insulation properties is detected, and targeted control is taken on the indoor units in each room according to the detection results.

[0051] In a specific implementation, this embodiment can detect the operating status of each indoor unit of the air conditioner according to the instructions input by the user. For example, according to the shutdown detection instruction input by the user, the operating status of the indoor units currently running in each room can be detected. Furthermore, in this embodiment, a preset time can also be set. When the preset time is reached, the operating status of the indoor units currently running in each room is automatically detected. In this embodiment, the operating status of each indoor unit can also be detected in other ways. The settings can be made accordingly according to the actual situation. This embodiment does not limit this. Furthermore, in this embodiment, the operating status identifier of each indoor unit can be obtained, and then the operating status of each indoor unit can be determined based on the obtained operating status identifier. The operating status includes the off-state, the heating operating state, and the shutdown state, etc. The indoor unit in the shutdown state is used as the target indoor unit. In addition, in this embodiment, other methods can also be used to detect the shutdown status of the indoor unit, which is not limited.

[0052] It should be noted that, in this embodiment, targeted control is adopted for each stopped indoor unit based on the operating parameter information in the stopped state. The operating parameter information includes but is not limited to the shutdown duration of the indoor unit and the indoor ambient temperature when the indoor unit is stopped. The shutdown duration of the indoor unit is recorded from the moment the indoor unit stops, and the indoor ambient temperature is obtained in real time through a temperature sensor.

[0053] Step S20: The target indoor unit whose operating parameter information meets the preset conditions is used as the indoor unit to be controlled.

[0054] In a specific implementation, after obtaining the operating parameter information, the indoor units to be controlled can be screened out from the target indoor units according to preset conditions, wherein the preset conditions can be set as preset parameter information, and the preset parameter information includes but is not limited to the preset shutdown time or the preset indoor ambient temperature. The preset conditions can be set accordingly according to the actual situation, and this embodiment does not impose any restrictions on this. The target indoor unit is an indoor unit in a shutdown state. The shutdown type of the indoor unit in a shutdown state can be determined according to the preset conditions. The shutdown type includes an easy-to-reach temperature shutdown type and a difficult-to-reach temperature shutdown type. In this embodiment, the indoor unit corresponding to the operating parameter information that meets the preset conditions belongs to the easy-to-reach temperature shutdown type. This type of indoor unit is the indoor unit to be controlled, and a special control method needs to be adopted. The indoor unit corresponding to the operating parameter information that does not meet the preset conditions belongs to the difficult-to-reach temperature shutdown type. For this type of indoor unit, an ordinary control method can be adopted.

[0055] Furthermore, in order to more accurately identify the indoor units to be controlled that require special control in this embodiment, whether the operating parameters meet the preset conditions can be detected in the following manner. Specifically, before step S20, the acquired operating parameter information is subjected to parameter extraction, and different parameters have corresponding parameter identifiers. Based on the parameter identifiers, the shutdown duration of the target indoor unit when it is in a shutdown state, the real-time temperature in the room during the shutdown of the target indoor unit, that is, the current indoor ambient temperature, and the current temperature in the room at the time the target indoor unit is shut down, that is, the initial ambient temperature, can be extracted from the operating parameter information. The current indoor ambient temperature is acquired in real time. After acquiring the current indoor ambient temperature and the initial indoor ambient temperature, the temperature difference between the initial indoor ambient temperature and the current indoor ambient temperature is calculated. Finally, based on the temperature difference and the shutdown duration, it is determined whether the operating parameter information meets the preset conditions.

[0056] In a specific implementation, this embodiment determines whether the operating parameter information meets the preset conditions based on the preset temperature difference threshold and the preset duration. Specifically, if the temperature difference is greater than or equal to the preset difference threshold, and the shutdown duration is greater than or equal to the preset duration, it means that after the indoor unit has been stopped for a long time, due to the good thermal insulation of the room, the indoor temperature has not dropped, but has increased, making it easy for the indoor unit to reach the temperature. In this case, it is determined that the operating parameter information meets the preset conditions, and the target indoor unit corresponding to the operating parameter information is the indoor unit to be controlled. Furthermore, if the shutdown duration and the temperature difference do not meet the above conditions, it means that after the indoor unit has been stopped for a long time, due to the poor thermal insulation of the room, the indoor temperature has dropped, making it difficult for the indoor unit to reach the temperature. In this case, it is determined that the operating parameter information does not meet the preset conditions. It should be further emphasized that the preset time range in this embodiment is 30 to 180 minutes, and the temperature range corresponding to the temperature difference is 1 to 10°C. In order to ensure the accuracy and rationality of the judgment, the preset time range in this embodiment can be set to 60 minutes, and the temperature difference can be set to 2°C. Of course, it can also be adjusted accordingly according to the specific environmental conditions, and this embodiment imposes restrictions on this.

[0057] Step S30: intermittently starting the electronic expansion valve of the indoor unit to be controlled.

[0058] In a specific implementation, for indoor units requiring special control, this embodiment uses an intermittent startup method to control the electronic expansion valve of such indoor units. The intermittent startup method can be to open the electronic expansion valve at a preset time interval, then close it after a period of time, and repeat the entire opening and closing process. The preset time interval and the opening duration of the electronic expansion valve can be set accordingly based on actual conditions and are not limited in this embodiment.

[0059] Furthermore, in this embodiment, an intermittent start-up method is adopted for the indoor units to be controlled that require special control. For the indoor units that do not require special control, that is, the other indoor units in the target indoor units except the indoor units to be controlled, a normal control method is adopted in this embodiment to control the opening and closing of their electronic expansion valves.

[0060] In a specific implementation, after the other indoor units reach the desired temperature and shut down, in this embodiment, the electronic expansion valves of the other indoor units are maintained at a certain opening until the other indoor units resume heating operation, at which point the opening of the electronic expansion valves is restored to a normal value. Specifically, after the other indoor units shut down, the openings of the electronic expansion valves in the other rooms are maintained at a second preset opening. The second preset opening can be set based on user needs, such as by receiving a user input instruction to maintain the opening of the electronic expansion valve at the second preset opening. Alternatively, the second preset opening can be automatically adjusted based on the indoor temperature, such as by determining the second preset opening based on the temperature difference between the initial indoor ambient temperature and the current indoor ambient temperature, and then combining the corresponding relationship between the temperature difference and the opening. In this embodiment, other methods can also be used to determine the second preset opening, which is not limited thereto.

[0061] This embodiment obtains operating parameter information of the target indoor unit in the shutdown state when detecting that there is a shutdown target indoor unit in the one-to-multi air conditioner; uses the target indoor unit whose operating parameter information meets preset conditions as the indoor unit to be controlled; intermittently starts the electronic expansion valve of the indoor unit to be controlled, identifies the indoor unit to be controlled through the operating parameter information, and controls the opening of the electronic expansion valve of the indoor unit to be controlled by intermittent starting, so as to avoid the electronic expansion valve always maintaining a certain opening, thereby ensuring the stability of the indoor temperature when the air conditioner is heating.

[0062] refer to Figure 3 , Figure 3 This is a flow chart of a second embodiment of a one-to-many air conditioner control method according to the present invention.

[0063] Based on the first embodiment, step S30 in the one-to-many air conditioner control method of this embodiment specifically includes:

[0064] Step S301: closing the electronic expansion valve of the indoor unit to be controlled.

[0065] In a specific implementation, after the indoor unit to be controlled reaches the desired temperature and shuts down, the electronic expansion valve opening is intermittently activated to prevent the indoor room from overheating. In this embodiment, when the indoor unit to be controlled reaches the desired temperature and shuts down, the electronic expansion valve is first closed to stop supplying heat to the indoor room.

[0066] Step S302: after the electronic expansion valve is closed, reopen the electronic expansion valve according to a target time interval, and adjust the opening of the electronic expansion valve to a first preset opening.

[0067] It should be noted that, in the one-to-many air conditioner of this embodiment, after the electronic expansion valve corresponding to the indoor unit to be controlled is closed, the other indoor units are still in normal operation. Maintaining air supply will cause the refrigerant in the heat exchanger of the indoor unit to condense, and the condensed refrigerant will accumulate in the heat exchanger, thereby causing insufficient heat generation in other heating indoor units, and even causing the entire unit to malfunction and shut down. In this embodiment, after closing the electronic expansion valve, the electronic expansion valve will be opened again after a period of time to avoid the above situation. For example, the indoor unit to be controlled reaches the temperature and shuts down at time T0. Assuming that the target time interval is △T, the electronic expansion valve will be reopened at time T0+△T.

[0068] In a specific implementation, in this embodiment, the electronic expansion valve is reopened after a target time interval from the moment it closes. After reopening, the opening of the electronic expansion valve is adjusted to a first preset opening. The first preset opening in this embodiment can be set based on user needs, for example, by receiving a control instruction input by the user to adjust the opening of the electronic expansion valve to the first preset opening. Alternatively, the first preset opening can be automatically adjusted based on the indoor temperature, for example, by determining the first preset opening based on the temperature difference between the initial indoor ambient temperature and the current indoor ambient temperature and then combining the corresponding relationship between the temperature difference and the opening. Other methods can also be used to determine the first preset opening in this embodiment, and this is not limited to this. It should be emphasized that the opening range of the first preset opening in this embodiment is 40 to 200 pls. To improve the comfort of the air conditioner, the first preset opening can be set to 80 pls. Of course, the first preset opening can also be adjusted accordingly based on actual user needs, and this embodiment is not limited to this.

[0069] Furthermore, in order to more accurately and reasonably intermittently start the opening of the electronic expansion valve, the target time interval can be determined in the following manner in this embodiment. Since the number of rooms to be controlled is not unique, the number of indoor units corresponding to the indoor units to be controlled can be first obtained, and the target time interval can be calculated based on the number of indoor units and preset parameters. The calculation formula of the target time interval is such as 30 / (n*k), where n is the number of indoor units corresponding to the indoor units to be controlled, k is a preset parameter, and the parameter range corresponding to the preset parameter is 0.5 to 5. For example, assuming that the number of indoor units corresponding to the indoor units to be controlled is 2 and the value of k is 0.5, the target time interval can be calculated to be 30 minutes, that is, after the indoor units to be controlled are shut down, the closed electronic expansion valve will be reopened after 30 minutes. In order to improve the accuracy and rationality of the calculated target time interval in this embodiment, k can be set to 1. Similarly, the value of k can also be adjusted accordingly according to actual needs, and this is not limited in this embodiment.

[0070] Furthermore, before reopening the electronic expansion valve of the indoor unit to be controlled, the current compressor frequency of the air conditioner needs to be adjusted accordingly. It should be noted that in this embodiment, the adjustment of the current compressor frequency of the air conditioner is determined based on the magnitude relationship between the current compressor frequency and the preset frequency. Specifically, the current compressor frequency of the air conditioner is first obtained, and then compared with the preset compressor frequency. If the current compressor frequency is greater than or equal to the preset compressor frequency, the current compressor frequency needs to be reduced, that is, reduced to the preset compressor frequency. Furthermore, if the current frequency is less than the preset compressor frequency, the current compressor frequency is not reduced. In this embodiment, the current compressor frequency is maintained at the current frequency value. Furthermore, after the electronic expansion valve is opened and maintained open for a period of time, the electronic expansion valve is reclosed, and the compressor frequency is adjusted back to the frequency before the valve was opened, that is, the compressor frequency before the electronic expansion valve of the indoor unit to be controlled was reopened. The duration corresponding to the valve opening period ranges from 0.5 to 5 minutes. In this embodiment, the valve opening period can be set to 2 minutes, but this is not limited in this embodiment.

[0071] This embodiment closes the electronic expansion valve of the indoor unit to be controlled; after the electronic expansion valve is closed, the electronic expansion valve is reopened according to the target time interval, and the opening of the electronic expansion valve is adjusted to a first preset opening. Through intermittent control, the electronic expansion valve is prevented from always being maintained at a certain opening, thereby ensuring that the indoor room temperature is maintained at a certain level. At the same time, the current compressor frequency of the air conditioner can be adjusted according to the preset compression frequency, further improving the user's comfort.

[0072] In addition, an embodiment of the present invention further proposes a storage medium, on which a one-to-many air conditioner control program is stored. When the one-to-many air conditioner control program is executed by a processor, the steps of the one-to-many air conditioner control method described above are implemented.

[0073] Reference Figure 4 , Figure 4 This is a structural block diagram of the first embodiment of the one-to-many air conditioner control device of the present invention.

[0074] like Figure 4 As shown, the one-to-many air conditioner control device proposed in the embodiment of the present invention includes:

[0075] The detection module 10 is used to obtain the operating parameter information of the target indoor unit in the shutdown state when detecting that the target indoor unit in the one-to-multi air conditioner system is shut down.

[0076] It should be noted that the execution subject of this embodiment can be a one-to-many air conditioner control device, and the one-to-many air conditioner control device can be an electronic device such as a personal computer or a server, or can be other controllers and devices that can achieve the same or similar functions. This embodiment does not limit this. In this embodiment and the following embodiments, the one-to-many air conditioner control method of the present invention is explained by taking a one-to-many air conditioner control device as an example.

[0077] It should be noted that to address the issue of the electronic expansion valve of the indoor unit shutting down during temperature shutdown, maintaining air supply will cause refrigerant in the indoor unit's heat exchanger to condense. This condensation will accumulate in the heat exchanger, reducing the refrigerant flow rate in the entire system, leading to insufficient heating in other heating units and even causing the entire unit to malfunction and shut down. The prior art addresses this issue by maintaining the electronic expansion valve of the indoor unit shutting down during temperature shutdown at a relatively low opening. However, it should be emphasized that if the air conditioner shuts down during heating operation, it indicates that the indoor temperature has reached a comfortable temperature or the user's set temperature. In practice, due to the varying construction of different rooms, some rooms have poor insulation, and heating will resume after a brief shutdown. However, other rooms have better insulation, and heating will take a long time to resume after shutdown. If the electronic expansion valve is maintained at a relatively low opening according to the prior art solution, the temperature in the room with better insulation will continue to rise, resulting in high temperatures and seriously affecting user comfort. In this embodiment, in order to solve the above problem, the shutdown status of indoor units in rooms with different thermal insulation properties is detected, and targeted control is taken on the indoor units in each room according to the detection results.

[0078] In a specific implementation, this embodiment can detect the operating status of each indoor unit of the air conditioner according to the instructions input by the user. For example, according to the shutdown detection instruction input by the user, the operating status of the indoor units currently running in each room can be detected. Furthermore, in this embodiment, a preset time can also be set. When the preset time is reached, the operating status of the indoor units currently running in each room is automatically detected. In this embodiment, the operating status of each indoor unit can also be detected in other ways. The settings can be made accordingly according to the actual situation. This embodiment does not limit this. Furthermore, in this embodiment, the operating status identifier of each indoor unit can be obtained, and then the operating status of each indoor unit can be determined based on the obtained operating status identifier. The operating status includes the off-state, the heating operating state, and the shutdown state, etc. The indoor unit in the shutdown state is used as the target indoor unit. In addition, in this embodiment, other methods can also be used to detect the shutdown status of the indoor unit, which is not limited.

[0079] It should be noted that, in this embodiment, targeted control is adopted for each stopped indoor unit based on the operating parameter information in the stopped state. The operating parameter information includes but is not limited to the shutdown duration of the indoor unit and the indoor ambient temperature when the indoor unit is stopped. The shutdown duration of the indoor unit is recorded from the moment the indoor unit stops, and the indoor ambient temperature is obtained in real time through a temperature sensor.

[0080] The judgment module 20 is configured to select a target indoor unit whose operating parameter information meets a preset condition as an indoor unit to be controlled.

[0081] In a specific implementation, after obtaining the operating parameter information, the indoor units to be controlled can be screened out from the target indoor units according to preset conditions, wherein the preset conditions can be set as preset parameter information, and the preset parameter information includes but is not limited to the preset shutdown time or the preset indoor ambient temperature. The preset conditions can be set accordingly according to the actual situation, and this embodiment does not impose any restrictions on this. The target indoor unit is an indoor unit in a shutdown state. The shutdown type of the indoor unit in a shutdown state can be determined according to the preset conditions. The shutdown type includes an easy-to-reach temperature shutdown type and a difficult-to-reach temperature shutdown type. In this embodiment, the indoor unit corresponding to the operating parameter information that meets the preset conditions belongs to the easy-to-reach temperature shutdown type. This type of indoor unit is the indoor unit to be controlled, and a special control method needs to be adopted. The indoor unit corresponding to the operating parameter information that does not meet the preset conditions belongs to the difficult-to-reach temperature shutdown type. For this type of indoor unit, an ordinary control method can be adopted.

[0082] Furthermore, in order to more accurately identify the indoor units to be controlled that require special control in this embodiment, it is possible to detect whether the operating parameters meet the preset conditions in the following manner. Specifically, the acquired operating parameter information can be subjected to parameter extraction, and different parameters have corresponding parameter identifiers. Based on the parameter identifiers, the shutdown duration of the target indoor unit when it is in a shutdown state, the real-time temperature in the room during the shutdown of the target indoor unit, that is, the current indoor ambient temperature, and the current temperature in the room at the time the target indoor unit is shut down, that is, the initial ambient temperature, can be extracted from the operating parameter information. The current indoor ambient temperature is acquired in real time. After acquiring the current indoor ambient temperature and the initial indoor ambient temperature, the temperature difference between the initial indoor ambient temperature and the current indoor ambient temperature is calculated. Finally, based on the temperature difference and the shutdown duration, it is determined whether the operating parameter information meets the preset conditions.

[0083] In a specific implementation, this embodiment determines whether the operating parameter information meets the preset conditions based on the preset temperature difference threshold and the preset duration. Specifically, if the temperature difference is greater than or equal to the preset difference threshold, and the shutdown duration is greater than or equal to the preset duration, it means that after the indoor unit has been stopped for a long time, due to the good thermal insulation of the room, the indoor temperature has not dropped, but has increased, making it easy for the indoor unit to reach the temperature. In this case, it is determined that the operating parameter information meets the preset conditions, and the target indoor unit corresponding to the operating parameter information is the indoor unit to be controlled. Furthermore, if the shutdown duration and the temperature difference do not meet the above conditions, it means that after the indoor unit has been stopped for a long time, due to the poor thermal insulation of the room, the indoor temperature has dropped, making it difficult for the indoor unit to reach the temperature. In this case, it is determined that the operating parameter information does not meet the preset conditions. It should be further emphasized that the preset time range in this embodiment is 30 to 180 minutes, and the temperature range corresponding to the temperature difference is 1 to 10°C. In order to ensure the accuracy and rationality of the judgment, the preset time range in this embodiment can be set to 60 minutes, and the temperature difference can be set to 2°C. Of course, it can also be adjusted accordingly according to the specific environmental conditions, and this embodiment imposes restrictions on this.

[0084] The control module 30 is used to intermittently start the electronic expansion valve of the indoor unit to be controlled.

[0085] In a specific implementation, for indoor units requiring special control, this embodiment uses an intermittent startup method to control the electronic expansion valve of such indoor units. The intermittent startup method can be to open the electronic expansion valve at a preset time interval, then close it after a period of time, and repeat the entire opening and closing process. The preset time interval and the opening duration of the electronic expansion valve can be set accordingly based on actual conditions and are not limited in this embodiment.

[0086] Furthermore, in this embodiment, an intermittent start-up method is adopted for the indoor units to be controlled that require special control. For the indoor units that do not require special control, that is, the other indoor units in the target indoor units except the indoor units to be controlled, a normal control method is adopted in this embodiment to control the opening and closing of their electronic expansion valves.

[0087] In a specific implementation, after the other indoor units reach the desired temperature and shut down, in this embodiment, the electronic expansion valves of the other indoor units are maintained at a certain opening until the other indoor units resume heating operation, at which point the opening of the electronic expansion valves is restored to a normal value. Specifically, after the other indoor units shut down, the openings of the electronic expansion valves in the other rooms are maintained at a second preset opening. The second preset opening can be set based on user needs, such as by receiving a user input instruction to maintain the opening of the electronic expansion valve at the second preset opening. Alternatively, the second preset opening can be automatically adjusted based on the indoor temperature, such as by determining the second preset opening based on the temperature difference between the initial indoor ambient temperature and the current indoor ambient temperature, and then combining the corresponding relationship between the temperature difference and the opening. In this embodiment, other methods can also be used to determine the second preset opening, which is not limited thereto.

[0088] This embodiment obtains operating parameter information of the target indoor unit in the shutdown state when detecting that there is a shutdown target indoor unit in the one-to-multi air conditioner; uses the target indoor unit whose operating parameter information meets preset conditions as the indoor unit to be controlled; intermittently starts the electronic expansion valve of the indoor unit to be controlled, identifies the indoor unit to be controlled through the operating parameter information, and controls the opening of the electronic expansion valve of the indoor unit to be controlled by intermittent starting, so as to avoid the electronic expansion valve always maintaining a certain opening, thereby ensuring the stability of the indoor temperature when the air conditioner is heating.

[0089] It should be understood that the above is only an example and does not constitute any limitation to the technical solution of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any limitation on this.

[0090] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of the present invention. In practical applications, technicians in this field can select part or all of it according to actual needs to achieve the purpose of the embodiment scheme, and no limitation is made here.

[0091] In addition, for technical details not fully described in this embodiment, please refer to the one-to-many air conditioner control method provided in any embodiment of the present invention, and will not be repeated here.

[0092] In addition, it should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0093] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0094] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, or of course by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a storage medium (such as a read-only memory (ROM) / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0095] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for controlling multiple air conditioners, characterized in that: The one-to-many air conditioner control method includes: When detecting that a target indoor unit of the one-to-multi air conditioner system is shut down, obtaining operation parameter information of the target indoor unit in the shut down state; The target indoor unit whose operating parameter information meets the preset conditions is used as the indoor unit to be controlled; and The electronic expansion valve of the indoor unit to be controlled is started intermittently, and after the other indoor units reach the temperature and stop, the electronic expansion valve of the other indoor units is maintained at the second preset opening until the opening of the electronic expansion valve is restored to the normal state when the other indoor units resume heating operation.

2. The one-to-many air conditioner control method according to claim 1, wherein: Before determining the target indoor unit whose operating parameter information meets the preset conditions as the indoor unit to be controlled, the method further includes: Extracting the shutdown duration corresponding to the target indoor unit, and the current indoor ambient temperature and the initial indoor ambient temperature when the target indoor unit is shut down from the operating parameter information; determining a temperature difference according to the initial indoor ambient temperature and the current indoor ambient temperature; and When the temperature difference is greater than or equal to the preset difference threshold and the shutdown time is greater than or equal to the preset time, it is determined that the indoor unit corresponding to the operating parameter information belongs to the easy-to-reach temperature shutdown type, and the operating parameter information meets the preset conditions.

3. The one-to-many air conditioner control method according to claim 1, wherein: The intermittently starting the electronic expansion valve of the indoor unit to be controlled includes: Closing the electronic expansion valve of the indoor unit to be controlled; and After the electronic expansion valve is closed, the electronic expansion valve is reopened according to a target time interval, and the opening degree of the electronic expansion valve is adjusted to a first preset opening degree.

4. The one-to-many air conditioner control method according to claim 3, wherein: After the electronic expansion valve is closed, before reopening the electronic expansion valve at a target time interval and adjusting the opening of the electronic expansion valve to a first preset opening, the method further includes: Obtaining the number of indoor units corresponding to the indoor unit to be controlled; and The target time interval is determined according to the number of indoor units and preset parameters.

5. The one-to-many air conditioner control method according to claim 3, wherein: After the electronic expansion valve is closed, before reopening the electronic expansion valve at a target time interval and adjusting the opening of the electronic expansion valve to a first preset opening, the method further includes: Obtaining the current compressor frequency of the one-to-many air conditioner; comparing the current compressor frequency with a preset compressor frequency; and When the current compressor frequency is greater than or equal to the preset compressor frequency, the current compressor frequency is adjusted to the preset compressor frequency.

6. The one-to-many air conditioner control method according to claim 5, wherein: After comparing the current compressor frequency with the preset compressor frequency, the method further includes: When the current compressor frequency is less than the preset compressor frequency, the current compressor frequency is maintained unchanged.

7. The method for controlling multiple air conditioners according to any one of claims 1 to 6, wherein: After the electronic expansion valve of the indoor unit to be controlled is intermittently started, the method further includes: The opening degree of the electronic expansion valve of the target indoor unit whose operating parameter information does not meet the preset condition is controlled to be maintained at a second preset opening degree.

8. A one-to-many air conditioner control device, characterized in that: The one-to-many air conditioner control device comprises: a detection module for, when detecting that a target indoor unit of the one-to-multi air conditioner is stopped, obtaining operating parameter information of the target indoor unit in a stopped state; A judgment module, configured to select a target indoor unit whose operating parameter information meets a preset condition as an indoor unit to be controlled; The control module is used to intermittently start the electronic expansion valve of the indoor unit to be controlled, and after the other indoor units reach the temperature and stop, maintain the electronic expansion valve of the other indoor units at a second preset opening until the other indoor units resume heating operation and return to a normal electronic expansion valve opening.

9. An air conditioner, characterized in that: The air conditioner includes: a memory, a processor, and a one-to-many air conditioner control program stored in the memory and executable on the processor, wherein the one-to-many air conditioner control program is configured to implement the one-to-many air conditioner control method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium stores a one-to-many air conditioner control program, and when the one-to-many air conditioner control program is executed by the processor, the one-to-many air conditioner control method according to any one of claims 1 to 7 is implemented.

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