Air conditioning system control method and device, control equipment and storage medium

Abstract

Embodiments of the present application relate to an air conditioning system control method and device, a control apparatus and a storage medium. The method comprises: obtaining running state data of an air conditioning system, and determining whether the refrigerant supply quantity in the air conditioning system meets normal supply conditions based on the running state data; if not, determining a target outdoor unit from at least two currently started air conditioning outdoor units; based on the target outdoor unit, performing the following control steps: turning off the target outdoor unit; if the air conditioning system reaches a stable running state, determining again whether the refrigerant supply quantity meets the normal supply conditions; if yes, keeping the currently started air conditioning outdoor units running; if not, determining a target outdoor unit from the currently started air conditioning outdoor units again, and continuing to perform the control steps. Embodiments of the present application can automatically turn off some air conditioning outdoor units when the refrigerant cannot be fully circulated, ensure that the air conditioning outdoor units are supplied with sufficient refrigerant, and improve the heat exchange effect and reliability.

Description

Technical Field

[0001] This application relates to the field of air conditioning control technology, and in particular to an air conditioning system control method, device, control equipment, and computer-readable storage medium. Background Technology

[0002] In air conditioning systems with multiple indoor and outdoor units, when the outdoor ambient temperature is low, the refrigerant in the system struggles to circulate quickly. To ensure effective temperature control, modular air conditioning systems typically operate more outdoor units and run the compressor at high frequency to increase output power and raise the refrigerant temperature as quickly as possible. However, in low-temperature environments, when users only turn on some indoor units while most are off, the refrigerant in the system circulates only through the running indoor units. At this point, with all outdoor units on, the refrigerant circulation is insufficient, resulting in less refrigerant reaching the running outdoor units compared to normal ambient temperature operation. Insufficient refrigerant affects the heating performance of the outdoor units, and the reduced refrigerant circulation also reduces compressor lubrication. Under high-frequency operation, this can compromise compressor reliability and even damage the compressor.

[0003] Therefore, in low-temperature environments, ensuring that the refrigerant in the system can circulate fully, guaranteeing that the outdoor unit can receive sufficient refrigerant, and ensuring the heat exchange effect and system reliability of the air conditioner are problems that need to be solved. Summary of the Invention

[0004] In view of this, in order to solve some or all of the above-mentioned technical problems, embodiments of this application provide an air conditioning system control method, apparatus, control device, and computer-readable storage medium.

[0005] In a first aspect, embodiments of this application provide an air conditioning system control method, the method comprising: acquiring operating status data of the air conditioning system, and determining, based on the operating status data, whether the refrigerant supply in the air conditioning system meets normal supply conditions; if it does not meet normal supply conditions, determining a target outdoor unit from at least two currently active air conditioning outdoor units; based on the target outdoor unit, performing the following control steps: shutting down the target outdoor unit; determining whether the air conditioning system has reached a stable operating state, and if it has reached a stable operating state, re-determining whether the refrigerant supply meets normal supply conditions; if it meets normal supply conditions, maintaining the currently active air conditioning outdoor units in continuous operation; if it does not meet normal supply conditions, re-determining the target outdoor unit from the currently active air conditioning outdoor units, and continuing to perform the control steps.

[0006] In one possible implementation, acquiring the operating status data of the air conditioning system and determining whether the refrigerant supply in the air conditioning system meets normal supply conditions based on the operating status data includes: acquiring the outdoor temperature corresponding to the air conditioning system as operating status data; if the outdoor temperature is less than or equal to a first preset temperature, determining the operating load rate of at least two indoor air conditioning units currently located indoors as operating status data; if the operating load rate is less than or equal to a preset load rate threshold, acquiring the target temperature collected at the target acquisition point of the compressor of the air conditioning system; determining whether the target temperature meets preset temperature conditions; if it does not meet the temperature conditions, determining that the refrigerant supply does not meet normal supply conditions.

[0007] In one possible implementation, determining the operating load rate of at least two indoor air conditioning units currently located indoors as operating status data includes: determining the sum of the capacities of the at least two indoor air conditioning units currently in operation as the operating capacity; determining the ratio of the operating capacity to the total capacity of the at least two indoor air conditioning units as the operating load rate, and using the operating load rate as operating status data.

[0008] In one possible implementation, acquiring the target temperature for the compressor of the air conditioning system includes: acquiring a first temperature at the refrigerant inlet and a second temperature at the refrigerant outlet of the compressor, and determining the first temperature and the second temperature as the target temperature; determining whether the target temperature meets the preset temperature conditions includes: if the first temperature is less than or equal to a second preset temperature, and / or the second temperature is outside the preset temperature range, determining that the target temperature does not meet the preset temperature conditions.

[0009] In one possible implementation, determining the target outdoor unit from at least two currently active air conditioning outdoor units includes: determining the target outdoor unit from at least two currently active air conditioning outdoor units in ascending order of their capacity.

[0010] In one possible implementation, determining whether the air conditioning system has reached a stable operating state includes: determining whether the time between the time the target outdoor unit was shut down and the current time exceeds a preset time, and / or determining whether the fluctuation range of the air outlet temperature of the air conditioning indoor unit currently in operation among the at least two air conditioning indoor units located indoors is within a preset range; if the time exceeds the preset time, and / or the fluctuation range is within the preset range, determining whether the air conditioning system has reached a stable operating state.

[0011] Secondly, embodiments of this application provide an air conditioning system control device, which includes: an acquisition module, configured to acquire operating status data of the air conditioning system and determine, based on the operating status data, whether the refrigerant supply in the air conditioning system meets normal supply conditions; a first determination module, configured to, if the normal supply conditions are not met, determine a target outdoor unit from at least two currently active air conditioning outdoor units; a control module, configured to, based on the target outdoor unit, execute the following control steps: shut down the target outdoor unit; determine whether the air conditioning system has reached a stable operating state, and if it has reached a stable operating state, re-determine whether the refrigerant supply meets normal supply conditions; if the normal supply conditions are met, keep the currently active air conditioning outdoor unit running continuously; and a second determination module, configured to, if the normal supply conditions are not met, re-determine the target outdoor unit from the currently active air conditioning outdoor units and continue executing the control steps.

[0012] Thirdly, embodiments of this application provide an air conditioning system, which includes: at least two indoor air conditioning units, at least two outdoor air conditioning units, and a control device; at least two indoor air conditioning units are disposed within a target space, and at least two outdoor air conditioning units are disposed outside the target space; the control device is connected to at least two indoor air conditioning units and at least two outdoor air conditioning units, and is used to execute the method of any embodiment of the air conditioning system control method of the first aspect described above.

[0013] Fourthly, embodiments of this application provide a control device, including: a memory for storing a computer program; and a processor for executing the computer program stored in the memory, wherein when the computer program is executed, it implements the method of any embodiment of the air conditioning system control method of the first aspect of this application.

[0014] Fifthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method of any embodiment of the air conditioning system control method of the first aspect described above.

[0015] In a sixth aspect, embodiments of this application provide a computer program that includes computer-readable code. When the computer-readable code is executed on a device, it causes a processor in the device to implement the method of any embodiment of the air conditioning system control method of the first aspect described above.

[0016] The air conditioning system control method, apparatus, control equipment, and computer-readable storage medium provided in this application embodiment acquire the operating status data of the air conditioning system and determine whether the refrigerant supply in the air conditioning system meets the normal supply conditions based on the operating status data. If it does not meet the normal supply conditions, the target outdoor unit is shut down one by one from the multiple currently active outdoor units. When the refrigerant supply meets the normal supply conditions, the currently active outdoor units are kept running continuously. This achieves the automatic shutdown of some outdoor units when not all indoor units are active and a large number of outdoor units are active, resulting in insufficient refrigerant circulation. This ensures that the active outdoor units receive sufficient refrigerant, allowing the refrigerant in the system to circulate fully, thereby improving the heat exchange effect and reliability of the air conditioning system. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 A flowchart illustrating an air conditioning system control method provided in an embodiment of this application;

[0021] Figure 2 A flowchart illustrating another air conditioning system control method provided in an embodiment of this application;

[0022] Figure 3 A flowchart illustrating another air conditioning system control method provided in this application embodiment;

[0023] Figure 4 A flowchart illustrating another air conditioning system control method provided in this application embodiment;

[0024] Figure 5 A flowchart illustrating another air conditioning system control method provided in this application embodiment;

[0025] Figure 6A flowchart illustrating a specific application scenario provided in this application embodiment;

[0026] Figure 7 This is a schematic diagram of the structure of an air conditioning system control device provided in an embodiment of this application;

[0027] Figure 8 This is a schematic diagram of the structure of an air conditioning system provided in an embodiment of this application;

[0028] Figure 9 This is a schematic diagram of the structure of a control device provided in an embodiment of this application. Detailed Implementation

[0029] Various exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application.

[0030] Those skilled in the art will understand that the terms "first" and "second" in the embodiments of this application are only used to distinguish different steps, devices or modules, and do not represent any specific technical meaning, nor do they indicate the logical order between them.

[0031] It should also be understood that in this embodiment, "multiple" can refer to two or more, and "at least one" can refer to one, two or more.

[0032] It should also be understood that any component, data or structure mentioned in the embodiments of this application can generally be understood as one or more unless explicitly defined or given contrary guidance in the context.

[0033] Furthermore, the term "and / or" in this application is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "or" relationship.

[0034] It should also be understood that the description of the various embodiments in this application emphasizes the differences between the various embodiments, and the similarities or similarities can be referred to each other. For the sake of brevity, they will not be described in detail.

[0035] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0036] Techniques, circuits, and devices known to a person skilled in the art may not be discussed in detail, but where appropriate, such techniques, circuits, and devices should be considered part of the specification.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. To facilitate understanding of the embodiments of this application, the application will be described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0039] To address the technical problem of poor air conditioning heat exchange performance when not all indoor units are turned on and a large number of outdoor units are turned on, resulting in insufficient refrigerant circulation, this application provides an air conditioning system control method that ensures that the outdoor units that are turned on receive sufficient refrigerant, thereby improving the air conditioning heat exchange performance and reliability.

[0040] Figure 1 This is a flowchart illustrating an air conditioning system control method provided in an embodiment of this application. This method can be applied to an air conditioning system. Typically, an air conditioning system can be equipped with a controller, and this method is executed by the controller. Alternatively, this method can run on other control devices communicatively connected to the air conditioning system, such as a remote server. Furthermore, the executing entity of this method can be hardware or software. When the executing entity is hardware, it can be one or more of the aforementioned control devices. For example, a single control device can execute this method, or multiple control devices can cooperate with each other to execute this method. When the executing entity is software, this method can be implemented as multiple software programs or software modules, or as a single software program or software module. No specific limitations are made here.

[0041] like Figure 1 As shown, the method specifically includes:

[0042] Step 101: Obtain the operating status data of the air conditioning system, and based on the operating status data, determine whether the refrigerant supply in the air conditioning system meets the normal supply conditions.

[0043] In this embodiment, the air conditioning system may include multiple indoor units and multiple outdoor units, and the air conditioning system can provide cooling or heating for a specific space. The operating status data of the air conditioning system can represent the current operating status of the air conditioning system, as well as attributes such as the current environmental conditions.

[0044] As an example, operational status data may include indoor or outdoor temperature, temperature of a certain part of the air conditioning system, number of indoor units in operation, refrigerant flow, and other data.

[0045] Based on the various operating status data mentioned above, it can be determined whether the refrigerant supply is normal. For example, each operating status data can be compared with the operating status data corresponding to a normal refrigerant supply. If at least one operating status data is inconsistent with the normal data, it is determined that the refrigerant supply does not meet the normal supply conditions. When the refrigerant supply does not meet the normal supply conditions, the refrigerant cannot circulate sufficiently, resulting in poor air conditioning heat exchange performance.

[0046] If the refrigerant supply does not meet normal supply conditions, proceed to step 102. If the refrigerant supply meets normal supply conditions, the air conditioning system can continue to operate in its current state.

[0047] Step 102: Determine the target outdoor unit from at least two currently active air conditioner outdoor units.

[0048] In this embodiment, the method for determining the target outdoor unit can be preset according to requirements. For example, one outdoor unit can be randomly selected from at least two currently active outdoor units as the target outdoor unit.

[0049] Typically, after the air conditioning system is started for the first time, all outdoor units of the air conditioning system can be turned on. Then, the method of this embodiment is executed to determine the target outdoor unit.

[0050] After determining the target outdoor unit, the following control steps (steps 103-106) can be performed based on the target outdoor unit.

[0051] Step 103: Turn off the target outdoor unit;

[0052] Specifically, the entity executing this method can send a shutdown signal to the target outdoor unit, causing the target outdoor unit to shut down.

[0053] Step 104: Determine whether the air conditioning system has reached a stable operating state. If it has, determine again whether the refrigerant supply meets the normal supply conditions.

[0054] Specifically, after the target outdoor unit is shut down, the aforementioned execution entity can continuously determine whether the air conditioning system has reached a stable state. For example, a fixed time period can be set; if the time difference between the current moment and the moment the target outdoor unit is shut down exceeds this time period, then the air conditioning system is determined to have reached a stable operating state.

[0055] The method for reconfirming whether the refrigerant supply meets the normal supply conditions is the same as step 101, and will not be repeated here.

[0056] If the refrigerant supply meets the normal supply conditions, proceed to step 105; otherwise, proceed to step 106.

[0057] Step 105: Keep the currently running outdoor air conditioning unit running.

[0058] In this embodiment, if the refrigerant supply meets the normal supply conditions, the air conditioning system will continue to operate the currently started outdoor unit, that is, exit the above control steps and the air conditioning system will operate in the normal way.

[0059] Step 106: Re-identify the target outdoor unit from the currently active outdoor air conditioning units and continue executing the control steps.

[0060] In this embodiment, if the refrigerant supply does not meet the normal supply conditions, the target outdoor unit can be re-determined from the currently active outdoor units of the air conditioner using the same method as step 102 above, and step 103 can be repeated until the refrigerant supply meets the normal supply conditions.

[0061] The air conditioning system control method provided in this application obtains the operating status data of the air conditioning system and determines whether the refrigerant supply in the air conditioning system meets the normal supply conditions based on the operating status data. If it does not meet the normal supply conditions, the target outdoor unit is shut down one by one from the multiple currently turned-on outdoor units. When the refrigerant supply meets the normal supply conditions, the currently turned-on outdoor units are kept running continuously. This achieves the automatic shutdown of some outdoor units when not all indoor units are turned on and a large number of outdoor units are turned on, resulting in insufficient refrigerant circulation. This ensures that the turned-on outdoor units receive sufficient refrigerant, allowing the refrigerant in the system to circulate fully, thereby improving the heat exchange effect and reliability of the air conditioning system.

[0062] In some optional implementations of this embodiment, such as Figure 2 As shown, step 101 includes:

[0063] Step 1011: Obtain the outdoor temperature corresponding to the air conditioning system as the operating status data.

[0064] Specifically, the outdoor temperature can be detected by a temperature sensor installed outdoors. This temperature sensor maintains a communication connection with the aforementioned execution entity, which can receive the outdoor temperature sensed by the temperature sensor.

[0065] Step 1012: If the outdoor temperature is less than or equal to the first preset temperature, determine the operating load rate of at least two indoor air conditioning units currently located indoors as operating status data.

[0066] Specifically, in this embodiment of the application, when operating in heating mode, if the outdoor temperature is too low, the refrigerant cannot circulate sufficiently, affecting the heating effect. Therefore, when the outdoor temperature is less than or equal to a first preset temperature (e.g., -5°C), the aforementioned executing entity can determine the operating load rate of at least two indoor air conditioning units currently located indoors. The operating load rate represents the ratio of the operating load of the currently running indoor air conditioning unit to the total load of all indoor air conditioning units. As an example, the ratio of the number of indoor air conditioning units in operation to the total number of all indoor air conditioning units can be determined as the operating load rate.

[0067] Step 1013: If the start-up load rate is less than or equal to the preset load rate threshold, obtain the target temperature collected by the target acquisition point of the compressor of the air conditioning system.

[0068] As an example, the preset load rate threshold can be 50%. When the starting load rate is determined to be less than or equal to the preset load rate threshold, it means that the indoor unit of the air conditioner in operation may not be able to circulate the refrigerant sufficiently. At this time, it is necessary to obtain the temperature of the target sampling point of the compressor to further determine whether the refrigerant supply is sufficient.

[0069] The target sampling point of the compressor can be set according to actual needs. For example, it can be set at the refrigerant inlet and / or refrigerant outlet of the compressor, and the refrigerant inlet temperature and / or refrigerant outlet temperature is the target temperature.

[0070] Step 1014: Determine whether the target temperature meets the preset temperature conditions.

[0071] The temperature condition indicates whether the refrigerant supply is sufficient to meet the needs of the outdoor unit of the air conditioner. The temperature condition can be set according to actual needs. For example, a temperature range can be preset. If the target temperature is within this temperature range, the temperature condition is considered met; otherwise, it is not.

[0072] If the target temperature does not meet the temperature requirements, proceed to step 1015. If the target temperature meets the temperature requirements, the air conditioning system can continue to operate according to the current operating status.

[0073] Step 1015: Determine that the refrigerant supply does not meet normal supply conditions.

[0074] This embodiment acquires outdoor temperature, operating load rate, and target sampling point temperature sequentially as operating status data, and judges each type of operating status data. When the outdoor temperature is too low, it can accurately determine whether the refrigerant supply is sufficient by acquiring the target temperature of the compressor, thereby improving the efficiency of controlling the operating status of the air conditioning system, and effectively controlling the full circulation of refrigerant to improve the heat exchange effect of the air conditioning.

[0075] In some optional implementations of this embodiment, such as Figure 3 As shown, step 1012 includes:

[0076] Step 10121: Determine the sum of the capacities of at least two indoor air conditioning units that are in operation as the operating capacity.

[0077] The capacity of the indoor air conditioning unit can be the nominal cooling capacity. The capacity of each indoor air conditioning unit can be preset in the aforementioned implementing entity, thereby determining the operating capacity and the total capacity.

[0078] Step 10122: Determine the ratio of the operating capacity to the total capacity of at least two indoor air conditioning units as the operating load rate, and use the operating load rate as operating status data.

[0079] Since the capacity of the indoor unit of an air conditioner can reflect the power load during its operation, this embodiment calculates the operating load rate based on the capacity of the indoor unit. This allows the calculated operating load rate to accurately reflect the current refrigerant circulation status of the indoor unit, thereby improving the accuracy of determining whether the refrigerant meets the normal supply conditions and ultimately improving the accuracy of controlling the air conditioning system.

[0080] In some optional implementations of this embodiment, such as Figure 4 As shown, step 1013 includes:

[0081] Step 10131: Obtain the first temperature at the refrigerant inlet and the second temperature at the refrigerant outlet of the compressor, and determine the first temperature and the second temperature as the target temperature.

[0082] Specifically, a temperature sensor can be installed at the refrigerant inlet and refrigerant outlet of the compressor, and the aforementioned actuator can receive the first temperature and the second temperature from these two temperature sensors.

[0083] The refrigerant at the compressor inlet is a low-pressure, low-temperature gas that has already passed through the evaporator, while the gas discharged from the compressor outlet is a high-temperature gas. The area between the evaporator outlet and the compressor inlet is a low-pressure section; therefore, the first temperature can be referred to as the low-pressure temperature.

[0084] like Figure 4As shown, step 1014 includes:

[0085] Step 10141: If the first temperature is less than or equal to the second preset temperature, and / or the second temperature is outside the preset temperature range, it is determined that the target temperature does not meet the preset temperature conditions.

[0086] Specifically, under normal heat exchange conditions in an air conditioning system, the first temperature is typically higher than the second preset temperature (e.g., -15°C). When the first temperature is less than or equal to the second preset temperature, it can be considered that the refrigerant gas is not circulating sufficiently. Furthermore, under normal heat exchange conditions in an air conditioning system, the second temperature is typically within a preset temperature range (e.g., between 65°C and 95°C). When the second temperature is not within this preset temperature range, it can be considered that the refrigerant gas is not circulating sufficiently. When the aforementioned executing entity determines that the first temperature and the second temperature do not meet at least one of the aforementioned temperature ranges, it can be determined that the target temperature does not meet the temperature conditions.

[0087] This embodiment can quickly and effectively determine the refrigerant circulation status in the air conditioning system by collecting the temperatures at the refrigerant outlet and refrigerant inlet of the compressor, thereby further improving the efficiency of controlling the air conditioning system and ensuring that the air conditioning system can effectively exchange heat.

[0088] In some optional implementations of this embodiment, step 102 can be performed as follows:

[0089] Determine the target outdoor unit from at least two currently active outdoor units, in ascending order of capacity of the outdoor units.

[0090] The capacity of the outdoor unit of the air conditioner can be the nominal cooling capacity. That is, if it is determined that the refrigerant circulation is insufficient, the outdoor unit with the smallest capacity will be shut down first. This ensures that the outdoor unit of the air conditioning system can effectively regulate the indoor temperature while ensuring sufficient refrigerant circulation.

[0091] In some optional implementations of this embodiment, such as Figure 5 As shown, step 104 includes:

[0092] Step 1041: Determine whether the time between the moment the target outdoor unit is turned off and the current moment exceeds a preset time, and / or determine whether the fluctuation range of the air outlet temperature of the air conditioner indoor unit currently in operation among the at least two air conditioner indoor units located indoors is within a preset range.

[0093] As an example, the preset duration can be 1 minute, and the preset range can be 5°C. When judging the fluctuation range of the air outlet temperature, a corresponding judgment duration can be set, within which the temperature fluctuation range can be determined.

[0094] Step 1042: If the duration exceeds the preset duration and / or the fluctuation range is within the preset range, determine whether the air conditioning system has reached a stable operating state.

[0095] Specifically, if the target outdoor unit remains off for more than a preset time, it indicates that the air conditioning system has been running for some time, at which point it can be determined that the air conditioning system is operating basically stably. Furthermore, if the temperature fluctuation at the air outlet of the indoor unit is within a preset range, it indicates that the heat exchange effect of the air conditioning system is relatively stable, at which point it can be determined that the air conditioning system is operating basically stably. When at least one of the above conditions (time and fluctuation range) is met, it can be determined that the air conditioning system has reached a stable operating state.

[0096] This embodiment, by setting a preset duration and a preset temperature range, enables accurate determination of whether the air conditioning system has reached a stable operating state after the target outdoor unit is turned off. This helps to further accurately determine the refrigerant circulation status and improves the accuracy of controlling the air conditioning system for the purpose of improving heat exchange effect.

[0097] Figure 6 A flowchart illustrating a specific application scenario provided in this application embodiment. For example... Figure 6 As shown, the air conditioning system operates in heating mode. The controller in the air conditioning system first determines whether the outdoor ambient temperature T1 is greater than -5℃. If so, it continues heating according to the current operating state; if not, it determines the indoor unit's operating load rate P and determines whether P is greater than the preset load rate threshold (50%). If the operating load rate P is greater than 50%, it continues heating according to the current operating state; otherwise, it determines whether the compressor's refrigerant inlet temperature T2 is greater than -15℃ and whether the refrigerant outlet temperature T3 is within the range of 65℃-90℃. If so, it indicates sufficient refrigerant circulation, and the air conditioning system continues heating according to the current operating state; otherwise, it shuts down outdoor unit 1. After the air conditioning system has been running for a period of time, it again determines whether T2 is greater than -15℃ and whether T3 is within the range of 65℃-90℃. If so, the air conditioning system continues heating according to the current operating state; otherwise, it shuts down outdoor unit 2. This cycle continues until T2 is greater than -15℃ and T3 is within the range of 65℃-90℃. At this point, the air conditioning system continues to provide heating according to its current operating state, thus ensuring that the refrigerant circulates fully within the air conditioning system.

[0098] Figure 7This is a schematic diagram of an air conditioning system control device provided in an embodiment of this application. Specifically, it includes: an acquisition module 701, used to acquire operating status data of the air conditioning system and, based on the operating status data, determine whether the refrigerant supply in the air conditioning system meets normal supply conditions; a first determination module 702, used to, if the normal supply conditions are not met, determine a target outdoor unit from at least two currently active air conditioning outdoor units; a control module 703, used to, based on the target outdoor unit, execute the following control steps: shut down the target outdoor unit; determine whether the air conditioning system has reached a stable operating state; if it has reached a stable operating state, re-determine whether the refrigerant supply meets normal supply conditions; if the normal supply conditions are met, keep the currently active air conditioning outdoor unit running continuously; and a second determination module 704, used to, if the normal supply conditions are not met, re-determine the target outdoor unit from the currently active air conditioning outdoor units and continue executing the control steps.

[0099] In some optional implementations of this embodiment, the acquisition module includes: a first acquisition unit, used to acquire the outdoor temperature corresponding to the air conditioning system as operating status data; a first determination unit, used to determine the operating load rate of at least two indoor air conditioning units currently located indoors as operating status data if the outdoor temperature is less than or equal to a first preset temperature; a second acquisition unit, used to acquire the target temperature collected at the target acquisition point of the air conditioning system compressor if the operating load rate is less than or equal to a preset load rate threshold; a second determination unit, used to determine whether the target temperature meets the preset temperature conditions; and a third determination unit, used to determine that the refrigerant supply does not meet the normal supply conditions if the temperature conditions are not met.

[0100] In some optional implementations of this embodiment, the first determining unit includes: a first determining subunit, used to determine the sum of the capacities of the air conditioning indoor units in operation among at least two air conditioning indoor units as the operating capacity; and a second determining subunit, used to determine the ratio of the operating capacity to the total capacity of the at least two air conditioning indoor units as the operating load rate.

[0101] In some optional implementations of this embodiment, the second acquisition unit is further configured to: acquire the first temperature at the refrigerant inlet and the second temperature at the refrigerant outlet of the compressor, and determine the first temperature and the second temperature as the target temperature; the second determination unit is further configured to: if the first temperature is less than or equal to the second preset temperature, and / or the second temperature is outside the preset temperature range, determine that the target temperature does not meet the preset temperature conditions.

[0102] In some optional implementations of this embodiment, the first determining module is further configured to: determine the target outdoor unit from at least two currently activated air conditioning outdoor units in ascending order of their capacity.

[0103] In some optional implementations of this embodiment, the control module includes: a fourth determining unit, used to determine whether the time between the time when the target outdoor unit is turned off and the current time exceeds a preset time, and / or to determine whether the fluctuation range of the air outlet temperature of the air conditioner indoor unit currently in operation among the at least two air conditioner indoor units located indoors is within a preset range; and a fifth determining unit, used to determine whether the air conditioning system has reached a stable operating state if the time exceeds the preset time and / or the fluctuation range is within the preset range.

[0104] The air conditioning system control device provided in this embodiment can be as follows: Figure 7 The air conditioning system control device shown can execute all the steps of the above air conditioning system control methods, thereby achieving the technical effects of the above air conditioning system control methods. For details, please refer to the above descriptions. For the sake of brevity, further details are omitted here.

[0105] Figure 8 This is a schematic diagram of an air conditioning system provided in an embodiment of this application. The air conditioning system specifically includes:

[0106] At least two indoor air conditioning units 801, at least two outdoor air conditioning units 802, and control equipment 803; at least two indoor air conditioning units are located inside the target space 804, and at least two outdoor air conditioning units are located outside the target space 804.

[0107] The control device 803 is connected to at least two indoor air conditioning units 801 and at least two outdoor air conditioning units 802, and is used to execute the above-described air conditioning system control method.

[0108] The control device 803 can be connected to at least two indoor air conditioning units 801 and at least two outdoor air conditioning units 802 via wired or wireless means. The control device 803 can be a separate control chip, a circuit board containing the control chip, or a general-purpose electronic device that communicates with the at least two indoor air conditioning units 801 and at least two outdoor air conditioning units, such as a mobile phone, tablet computer, desktop computer, or server. The control device 803 can be a standalone electronic device or integrated into the indoor or outdoor air conditioning units.

[0109] The air conditioning system provided in this embodiment, by having the control device execute the above-mentioned air conditioning system control method, can automatically shut down some of the air conditioning outdoor units when not all indoor units are turned on and a large number of outdoor units are turned on, resulting in insufficient refrigerant circulation. This ensures that the turned-on outdoor units can receive sufficient refrigerant, allowing the refrigerant in the system to circulate fully, thereby improving the heat exchange effect and reliability of the air conditioning system.

[0110] Figure 9This is a schematic diagram of the structure of a control device provided in an embodiment of this application. Figure 9 The control device 900 shown includes at least one processor 901, a memory 902, at least one network interface 904, and other user interfaces 903. The various components in the control device 900 are coupled together via a bus system 905. It is understood that the bus system 905 is used to implement communication between these components. In addition to a data bus, the bus system 905 also includes a power bus, a control bus, and a status signal bus. However, for clarity, ... Figure 9 The general labeled all buses as Bus System 905.

[0111] The user interface 903 may include a display, keyboard, or clicking device (e.g., mouse, trackball, touchpad, or touchscreen).

[0112] It is understood that the memory 902 in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 902 described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0113] In some implementations, memory 902 stores elements, executable units or data structures, or subsets thereof, or extended sets thereof: operating system 9021 and application program 9022.

[0114] The operating system 9021 includes various system programs, such as the framework layer, core library layer, and driver layer, used to implement various basic business functions and handle hardware-based tasks. The application program 9022 includes various applications, such as a media player and a browser, used to implement various application functions. The program implementing the method of this application embodiment can be included in the application program 9022.

[0115] In this embodiment, by calling the program or instructions stored in memory 902, specifically the program or instructions stored in application program 9022, processor 901 executes the method steps provided in each method embodiment, including, for example:

[0116] Acquire the operating status data of the air conditioning system, and based on the operating status data, determine whether the refrigerant supply in the air conditioning system meets the normal supply conditions. If it does not meet the normal supply conditions, determine the target outdoor unit from at least two currently active outdoor units. Based on the target outdoor unit, execute the following control steps: shut down the target outdoor unit; determine whether the air conditioning system has reached a stable operating state; if it has reached a stable operating state, determine again whether the refrigerant supply meets the normal supply conditions; if it meets the normal supply conditions, keep the currently active outdoor units running; if it does not meet the normal supply conditions, re-determine the target outdoor unit from the currently active outdoor units and continue executing the control steps.

[0117] The methods disclosed in the embodiments of this application can be applied to or implemented by processor 901. Processor 901 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware or by instructions in the form of software in processor 901. The processor 901 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or can be executed by a combination of hardware and software units in the decoding processor. The software units may be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 902. Processor 901 reads the information in memory 902 and, in conjunction with its hardware, completes the steps of the above method.

[0118] It is understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described above in this application, or combinations thereof.

[0119] For software implementation, the techniques described herein can be implemented by units that perform the functions described above. The software code can be stored in memory and executed by a processor. The memory can be implemented within the processor or external to the processor.

[0120] The control device provided in this embodiment can be as follows: Figure 9 The control device shown can execute all the steps of the air conditioning system control methods described above, thereby achieving the technical effects of the air conditioning system control methods described above. For details, please refer to the relevant descriptions above. For the sake of brevity, it will not be elaborated here.

[0121] This application also provides a storage medium (computer-readable storage medium). This storage medium stores one or more programs. The storage medium may include volatile memory, such as random access memory; it may also include non-volatile memory, such as read-only memory, flash memory, hard disk, or solid-state drive; and it may also include combinations of the above types of memory.

[0122] When one or more programs in the storage medium can be executed by one or more processors to implement the air conditioning system control method described above, which is executed on the control device side.

[0123] The processor described above is used to execute a program stored in memory to implement the following steps of an air conditioning system control method executed on the control device side:

[0124] Acquire the operating status data of the air conditioning system, and based on the operating status data, determine whether the refrigerant supply in the air conditioning system meets the normal supply conditions. If it does not meet the normal supply conditions, determine the target outdoor unit from at least two currently active outdoor units. Based on the target outdoor unit, execute the following control steps: shut down the target outdoor unit; determine whether the air conditioning system has reached a stable operating state; if it has reached a stable operating state, determine again whether the refrigerant supply meets the normal supply conditions; if it meets the normal supply conditions, keep the currently active outdoor units running; if it does not meet the normal supply conditions, re-determine the target outdoor unit from the currently active outdoor units and continue executing the control steps.

[0125] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different circuits to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0126] The steps of the circuits or algorithms described in connection with the embodiments disclosed herein can be implemented in hardware, software modules executed by a processor, or a combination of both. The software modules can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the art.

[0127] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The circuit steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of execution is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0128] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for controlling an air conditioning system, characterized in that, The method includes: Acquiring operating status data of an air conditioning system and determining, based on the operating status data, whether the refrigerant supply in the air conditioning system meets normal supply conditions includes: acquiring the outdoor temperature corresponding to the air conditioning system as the operating status data; if the outdoor temperature is less than or equal to a first preset temperature, determining the operating load rate of at least two indoor air conditioning units currently located indoors as the operating status data; if the operating load rate is less than or equal to a preset load rate threshold, acquiring the target temperature collected at a target sampling point for the compressor of the air conditioning system; determining whether the target temperature meets preset temperature conditions; if it does not meet the temperature conditions, determining that the refrigerant supply does not meet the normal supply conditions. If the normal supply conditions are not met, the target outdoor unit shall be determined from at least two currently active outdoor air conditioning units. Based on the target outdoor unit, the following control steps are executed: shut down the target outdoor unit; determine whether the air conditioning system has reached a stable operating state; if it has reached the stable operating state, determine again whether the refrigerant supply meets the normal supply conditions; if it meets the normal supply conditions, keep the currently started air conditioning outdoor unit running continuously. If the normal supply conditions are not met, the target outdoor unit is re-identified from the currently active outdoor air conditioning units, and the control steps are continued.

2. The method according to claim 1, characterized in that, The determination of the operating load rate of at least two indoor air conditioning units currently located indoors as the operating status data includes: The sum of the capacities of the at least two indoor air conditioning units that are in operation is determined as the operating capacity. The ratio of the operating capacity to the total capacity of the at least two indoor air conditioning units is determined as the operating load rate, and the operating load rate is used as the operating status data.

3. The method according to claim 1, characterized in that, The step of acquiring the target temperature from the target acquisition point of the compressor of the air conditioning system includes: Obtain a first temperature at the refrigerant inlet and a second temperature at the refrigerant outlet of the compressor, and determine the first temperature and the second temperature as the target temperature; Determining whether the target temperature meets the preset temperature conditions includes: If the first temperature is less than or equal to the second preset temperature, and / or the second temperature is outside the preset temperature range, it is determined that the target temperature does not meet the preset temperature conditions.

4. The method according to claim 1, characterized in that, The step of determining the target outdoor unit from at least two currently active air conditioning outdoor units includes: Determine the target outdoor unit from at least two currently active outdoor units, in ascending order of capacity of the outdoor units.

5. The method according to claim 1, characterized in that, Determining whether the air conditioning system has reached a stable operating state includes: Determine whether the time elapsed between the moment the target outdoor unit was shut down and the current moment exceeds a preset time elapsed, and / or determine whether the fluctuation range of the air outlet temperature of the air conditioner indoor unit that is currently in operation among the at least two air conditioner indoor units located indoors is within a preset range. If the duration exceeds the preset duration, and / or the fluctuation range is within the preset range, it is determined that the air conditioning system has reached a stable operating state.

6. An air conditioning system control device, characterized in that, The device includes: The acquisition module is used to acquire the operating status data of the air conditioning system and, based on the operating status data, determine whether the refrigerant supply in the air conditioning system meets the normal supply conditions. Specifically, it is used to acquire the outdoor temperature corresponding to the air conditioning system as the operating status data; if the outdoor temperature is less than or equal to a first preset temperature, it determines the operating load rate of at least two indoor air conditioning units currently located indoors as the operating status data; if the operating load rate is less than or equal to a preset load rate threshold, it acquires the target temperature collected at the target acquisition point of the compressor of the air conditioning system; it determines whether the target temperature meets the preset temperature conditions; if it does not meet the temperature conditions, it determines that the refrigerant supply does not meet the normal supply conditions. The first determining module is used to determine the target outdoor unit from at least two currently activated air conditioner outdoor units if the normal supply conditions are not met. The control module is used to perform the following control steps based on the target outdoor unit: shut down the target outdoor unit; determine whether the air conditioning system has reached a stable operating state; if it has reached the stable operating state, determine again whether the refrigerant supply meets the normal supply conditions; if it meets the normal supply conditions, keep the currently started air conditioning outdoor unit running continuously. The second determining module is used to re-determine the target outdoor unit from the currently activated air conditioning outdoor units if the normal supply conditions are not met, and continue to execute the control steps.

7. An air conditioning system, characterized in that, The system includes: at least two indoor air conditioning units, at least two outdoor air conditioning units, and control equipment; The at least two indoor air conditioning units are installed inside the target space, and the at least two outdoor air conditioning units are installed outside the target space. The control device is connected to the at least two indoor air conditioning units and the at least two outdoor air conditioning units, and is used to execute the air conditioning system control method according to any one of claims 1-5.

8. A control device, characterized in that, include: Memory, used to store computer programs; A processor is configured to execute a computer program stored in the memory, wherein when the computer program is executed, it implements the air conditioning system control method according to any one of claims 1-5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the air conditioning system control method according to any one of claims 1-5.

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