Air conditioning system

Abstract

Disclosed in the present application is an air conditioning system, which comprises indoor units, cut-off apparatuses, and a configuration module, wherein the configuration module comprises: a generation portion, which is configured to perform a leakage amount safety check on the basis of an assumed leakage amount so as to generate an initial scheme; a checking portion, which is configured to perform an operating condition safety check on the initial scheme on the basis of a simulated operating condition, so as to verify whether air-conditioned rooms downstream of the cut-off apparatuses in the initial scheme are in a safe state; a merging portion, which is configured to merge, when the air-conditioned rooms downstream of the cut-off apparatuses are in a safe state, the cut-off apparatuses in the initial scheme to generate a merged scheme; and an output portion, which is configured to perform an operating condition safety check on the merged scheme on the basis of the simulated operating condition, and to output a previous merged scheme as a configuration scheme when any air-conditioned room downstream of the cut-off apparatuses is no longer in a safe state.

Description

Air conditioning system

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 2024113315249, filed on September 23, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of air conditioning equipment, and in particular to an air conditioning system. BACKGROUND

[0004] To cope with ozone depletion and climate change, low-GWP (Global Warming Potential) refrigerants such as R32 and R454B have been applied in multi-split air conditioning systems, where R32 is a single-component refrigerant and R454B is a mixed refrigerant. However, low-GWP refrigerants are generally flammable. If a leak occurs, especially on the indoor side, it can pose a safety hazard.

[0005] In related technologies, a refrigerant concentration sensor is usually provided to detect refrigerant leakage. When the concentration is detected to be higher than a safety threshold, multiple safety measures such as alarming, cutting off, ventilation, etc. are taken. In related technologies, a cutting-off device is usually provided for each indoor unit, which further increases the installation space of the multi-split air conditioner and increases the equipment cost and construction cost. SUMMARY

[0006] Some embodiments of the present application provide an air conditioning system.

[0007] In some embodiments of the present application, the air conditioning system comprises:

[0008] an indoor unit installed in an air conditioning room; and

[0009] a cutting-off device configured to cut off the supply of refrigerant to the indoor unit.

[0010] a configuration module configured to generate a configuration scheme for the cutting-off device, and comprising:

[0011] a generation unit configured to perform a leakage amount safety check based on a hypothetical leakage amount, and generate an initial scheme for configuring the cutting-off device according to the result of the leakage amount safety check;

[0012] a check unit configured to perform a working condition safety check on the initial scheme based on a simulated working condition, and verify whether the air conditioning room downstream of the cutting-off device in the initial scheme is in a safe state during the working condition safety check;

[0013] a merging unit configured to merge at least two of the initial schemes to generate a merged scheme when the air-conditioned room downstream of the cutoff device is in a safe state;

[0014] an output unit configured to perform a working condition safety check on the merged scheme based on a simulated working condition, and output a previous merged scheme as the configuration scheme when any air-conditioned room downstream of the cutoff device is no longer in a safe state.

[0015] In some embodiments of the present application, the generating unit is configured to perform a leakage amount safety check based on a hypothetical leakage amount as a first safety check.

[0016] In some embodiments of the present application, the generating unit performs a leakage amount safety check based on a hypothetical leakage amount includes:

[0017] assuming that refrigerant leaks into one of the air-conditioned rooms to generate the hypothetical leakage amount;

[0018] obtaining an effective volume parameter of the air-conditioned room;

[0019] calculating an air-conditioned room hypothetical leakage concentration based on the hypothetical leakage amount and the effective volume parameter;

[0020] configuring one of the cutoff devices for the air-conditioned room in the initial scheme when the hypothetical leakage concentration is higher than a safety concentration threshold.

[0021] In some embodiments of the present application, the checking unit is configured to perform a working condition safety check based on a simulated working condition as a second safety check.

[0022] In some embodiments of the present application, the checking unit performs a working condition safety check on the initial scheme based on a simulated working condition includes:

[0023] obtaining an operating parameter of an indoor unit of the air-conditioned room downstream of the cutoff device;

[0024] calculating a refrigerant leakable amount of the indoor unit under the simulated working condition based on the operating parameter;

[0025] obtaining an effective volume of the air-conditioned room that satisfies a boundary volume condition;

[0026] calculating a simulated working condition leakage concentration based on the refrigerant leakable amount and the effective volume;

[0027] when the simulated working condition leakage concentration is lower than a preset concentration threshold, the air-conditioned room downstream of the cutoff device is in a safe state.

[0028] In some embodiments of the present application, the operating parameter includes a refrigeration parameter, a heating parameter, and a supply air parameter.

[0029] In some embodiments of the present application, if the verification indicates that at least one air-conditioned room downstream of the cut-off device in the initial scheme is not in a safe state, the checking unit is configured to:

[0030] correcting the operation parameters of the indoor unit of the air-conditioned room downstream of the cut-off device;

[0031] correcting the operation parameters of the indoor unit of the air-conditioned room downstream of the cut-off device with the corrected operation parameters of the indoor unit, and performing the working condition safety check again until the air-conditioned room downstream of the cut-off device is in a safe state.

[0032] In some embodiments of the present application, the capacity corresponding to the corrected operation parameters of the indoor unit is lower than the capacity corresponding to the operation parameters of the indoor unit of the air-conditioned room downstream of the cut-off device.

[0033] In some embodiments of the present application, if the checking unit fails to obtain the checking result that the air-conditioned room downstream of the cut-off device is in a safe state, the output unit prohibits outputting the configuration scheme.

[0034] In some embodiments of the present application, the merging unit is configured to merge at least two cut-off devices in the initial scheme from downstream to upstream to generate a merged scheme when the air-conditioned room downstream of the cut-off device is in a safe state.

[0035] In some embodiments of the present application, the merging unit is configured to merge at least two cut-off devices in the initial scheme and determine whether the capacity of the indoor unit downstream of the merged cut-off device is lower than the system performance capacity threshold; if it is lower than the system performance capacity threshold, the merged scheme is generated.

[0036] In some embodiments of the present application, the air conditioning system further comprises a detection device; the detection device is used to detect the refrigerant concentration in the air-conditioned room.

[0037] In some embodiments of the present application, the air conditioning system further comprises an alarm device; the alarm device is used to generate an alarm signal when the refrigerant concentration in the air-conditioned room is higher than a pre-alarm concentration threshold.

[0038] In some embodiments of the present application, the operation parameters for calculating the refrigerant leakage amount of the indoor unit under the simulated working condition include the leakage detection alarm time of the alarm device; the closing time of the cut-off device; the refrigerant leakage amount in the online pipe; and / or the refrigerant leakage amount of the indoor heat exchanger in the indoor unit.

[0039] In some embodiments of the present application, the safe concentration threshold is generated based on the lower flammable concentration and the effective volume parameter of the air-conditioned room.

[0040] Some embodiments of the present application provide a method for generating a configuration scheme, applied to an air conditioning system, wherein:

[0041] The air conditioning system comprises:

[0042] an indoor unit installed in an air-conditioned room; and

[0043] a cutoff device configured to cut off a refrigerant supply of the indoor unit;

[0044] The method comprises:

[0045] performing a leakage amount safety check based on an assumed leakage amount, and generating an initial scheme for configuring the cutoff device according to a result of the leakage amount safety check;

[0046] performing a working condition safety check on the initial scheme based on a simulated working condition, and verifying whether an air-conditioned room downstream of the cutoff device in the initial scheme is in a safe state during the working condition safety check;

[0047] when the air-conditioned room downstream of the cutoff device is in the safe state, merging at least two cutoff devices in the initial scheme to generate a merged scheme; and

[0048] performing a working condition safety check on the merged scheme based on a simulated working condition, and when any air-conditioned room downstream of the cutoff device is no longer in the safe state, outputting a previous merged scheme as the configuration scheme.

[0049] Some embodiments of the present application provide a device for generating a configuration scheme, applied to an air conditioning system, wherein:

[0050] The air conditioning system comprises:

[0051] an indoor unit installed in an air-conditioned room; and

[0052] a cutoff device configured to cut off a refrigerant supply of the indoor unit;

[0053] The device comprises a processor and a memory, and the memory stores instructions which, when executed by the processor, cause the processor to perform operations comprising:

[0054] performing a leakage amount safety check based on an assumed leakage amount, and generating an initial scheme for configuring the cutoff device according to a result of the leakage amount safety check;

[0055] performing a working condition safety check on the initial scheme based on a simulated working condition, and verifying whether an air-conditioned room downstream of the cutoff device in the initial scheme is in a safe state during the working condition safety check;

[0056] merge at least two of the initial schemes to generate a merged scheme when the air-conditioned room downstream of the cutoff device is in a safe state; and

[0057] perform a working condition safety check on the merged scheme based on simulated working conditions; and output the last merged scheme as the configuration scheme when any of the air-conditioned rooms downstream of the cutoff device is no longer in a safe state. BRIEF DESCRIPTION OF DRAWINGS

[0058] In order to more clearly illustrate the technical solutions in some embodiments of the present application or related technologies, the drawings needed to be used in the description of some embodiments or related technologies will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0059] Fig. 1 is a structural schematic diagram of an air conditioning system provided by some embodiments of the present application;

[0060] Fig. 2 is a structural schematic diagram of an air conditioning system provided by some embodiments of the present application;

[0061] Fig. 3 is a structural schematic block diagram of a configuration module provided by some embodiments of the present application;

[0062] Fig. 4 is a structural schematic block diagram of a configuration module provided by some embodiments of the present application;

[0063] Fig. 5 is a structural schematic diagram of an indoor unit in an air conditioning system provided by some embodiments of the present application;

[0064] Fig. 6 is a flowchart of a configuration module in an air conditioning system provided by some embodiments of the present application;

[0065] Fig. 7 is a structural schematic diagram of an air conditioning system provided by some embodiments of the present application;

[0066] Fig. 8 is a structural schematic diagram of an air conditioning system provided by some embodiments of the present application;

[0067] Fig. 9 is a flowchart of a configuration module provided by some embodiments of the present application;

[0068] Fig. 10 is a flowchart of a configuration module provided by some embodiments of the present application;

[0069] Fig. 11 is a structural schematic diagram of an air conditioning system provided by some embodiments of the present application;

[0070] Fig. 12 is a flowchart of a configuration module provided by some embodiments of the present application;

[0071] Fig. 13 is a structural schematic diagram of an air conditioning system according to some embodiments of the present application;

[0072] Fig. 14 is a structural schematic diagram of an air conditioning system according to some embodiments of the present application;

[0073] Fig. 15 is a flow chart of a configuration module according to some embodiments of the present application.

[0074] In the drawings: 10, air conditioning system; 1A, air-conditioned room; 1B, air-conditioned room; 1C, air-conditioned room; 1D, air-conditioned room; 1E, air-conditioned room; 100, outdoor unit; 101, compressor; 102, outdoor heat exchanger; 103, outdoor electronic expansion valve; 104, outdoor fan; 105, four-way valve; 106, gas-liquid separator; 107, oil separator; 108, capillary tube; 109, outdoor control circuit; 200, indoor unit; 201, indoor heat exchanger; 202, indoor fan; 203, indoor control circuit; 204, housing; 205, air outlet; 206, detection device; 207, alarm device; 208, indoor electronic expansion valve; 200-1, indoor unit; 200-2, indoor unit; 200-3, indoor unit; 200-4, indoor unit; 200-5, indoor unit; 200-6, indoor unit; 300, gas-side on-line pipe; 400, liquid-side on-line pipe; 500, cutoff device; 511, cutoff device; 512, cutoff device; 513, cutoff device; 514, cutoff device; 522, cutoff device; 534, cutoff device; 600, configuration module; 601, processor; 602, storage unit; 603, input / output interface; 604, communication interface; 611, generating unit; 612, checking unit; 613, merging unit; 614, output unit; 700, server; 800, terminal. DETAILED DESCRIPTION

[0075] The technical solutions in some embodiments of the present application will be described clearly and completely below in conjunction with the drawings in some embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on some embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative work fall within the scope of protection of the present application.

[0076] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0077] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0078] In the description of some embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to an indirect connection through an intermediate medium, or to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0079] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0080] The following disclosure provides numerous different embodiments for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0081] Hereinafter, some embodiments of the air conditioning system 10 provided by the present application will be described based on the accompanying drawings.

[0082] FIG. 1 shows an example of an air conditioning system 10 using some embodiments of the present application. The air conditioning system 10 is a system that performs a refrigeration cycle by using a compressor 101, a condenser, a throttling device, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and performs refrigeration or heating for an indoor space. The refrigerant is a flammable refrigerant such as R32 and R454B, etc. From a principle point of view, low-temperature and low-pressure refrigerant enters the compressor 101, which compresses the refrigerant gas into a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process. The throttling device expands the high-temperature and high-pressure liquid phase refrigerant formed in the condenser into low-pressure liquid phase refrigerant. The evaporator evaporates the refrigerant expanded in the throttling device and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor 101. The evaporator can achieve a refrigeration effect by exchanging heat with a material to be cooled using the latent heat of evaporation of the refrigerant. Throughout the cycle, the air conditioning system 10 can adjust the temperature of the indoor space.

[0083] The outdoor unit 100 of the air conditioning system 10 refers to the part of the refrigeration cycle including the compressor 101 and the outdoor heat exchanger 102, and the indoor unit 200 of the air conditioning system 10 is placed inside an air conditioning room, includes the indoor heat exchanger 201, and the throttling device can be provided in the indoor unit 200 and the outdoor unit 100, for example, in some embodiments of the present application, each indoor unit 200 is provided with an expansion valve, referred to as an indoor electronic expansion valve 208, and at the same time, an outdoor electronic expansion valve 103 can be provided in the outdoor unit 100. The indoor heat exchanger 201 and the outdoor heat exchanger 102 are used as a condenser or an evaporator. When the indoor heat exchanger 201 is used as a condenser, the air conditioning system 10 is used as a heater in a heating mode, and when the indoor heat exchanger 201 is used as an evaporator, the air conditioning system 10 is used as a cooler in a cooling mode.

[0084] In some embodiments of the present application, one or more compressors 101 can be provided in each outdoor unit 100, and the compressor 101 in operation is supplied with AC power by a frequency conversion device. When the output frequency of the frequency conversion device changes, the rotational speed of the compressor 101 changes, and different air conditioning capacities are achieved. In some embodiments of the present application, an outdoor fan 104 and a four-way valve 105 are also provided in the outdoor unit 100. In addition, a gas-liquid separator 106, a capillary tube 108, an oil separator 107, and other components can also be provided. The gas-liquid separator 106 is a shell-shaped component for separating the refrigerant into gas and liquid, and is usually provided on the suction side of the compressor 101. The outdoor heat exchanger 102 is configured as a heat exchanger that allows heat exchange between the refrigerant flowing through the internal heat exchange pipeline and the air (or other medium) guided by the outdoor fan 104. The outdoor fan 104 can be an axial fan, a cross-flow fan, or other optional fan forms, and is usually provided near the outdoor heat exchanger 102. The four-way valve 105 is a valve that switches the flow direction of the refrigerant according to the operation mode of the air conditioning system 10, i.e., in the cooling mode, the discharge side of the compressor 101 is connected to one end of the outdoor heat exchanger 102 via the four-way valve 105 and other pipelines, and the suction side of the compressor 101 is connected to one end of the indoor heat exchanger 201 via the four-way valve 105 and other pipelines, so that the outdoor heat exchanger 102 functions as a condenser, and the indoor heat exchanger 201 functions as an evaporator. Similarly, in the heating mode, the discharge side of the compressor 101 is connected to one end of the indoor heat exchanger 201 via the four-way valve 105 and other pipelines, and the suction side of the compressor 101 is connected to one side of the outdoor heat exchanger 102 via the four-way valve 105 and other pipelines, so that the indoor heat exchanger 201 functions as a condenser, and the outdoor heat exchanger 102 functions as an evaporator. The refrigerant circuit of the air conditioning system 10 connects the compressor 101, the outdoor heat exchanger 102, the expansion valve, and the indoor heat exchanger 201 in sequence to circulate the refrigerant. In the cooling mode, the refrigerant absorbs heat from the air through the evaporator and lowers the indoor temperature; in the heating mode, the refrigerant releases heat through the condenser and raises the indoor temperature. Due to the physical properties of the refrigerant, it can absorb and release a large amount of heat in different operating states, ensuring that the indoor temperature is within the set range. The latent heat of evaporation of the refrigerant in the evaporator can quickly remove heat through the flow of air, and in the condenser, heat is released through heat exchange with the outside air. Effective heat exchange design (such as the surface design of the heat exchanger, air flow optimization, etc.) can improve the heat exchange efficiency of the air conditioning system, thereby improving the refrigeration or heating efficiency and reducing energy consumption.

[0085] The indoor electronic expansion valve 208 corresponding to the indoor unit 200 and the outdoor electronic expansion valve 103 are valves that decompress the refrigerant flowing into the valve body itself, and are provided on a pipe through which liquid refrigerant or gas-liquid two-phase refrigerant flows. The oil separator 107 is used to separate the lubricating oil in the refrigerant discharged by the compressor 101, and is usually provided on the discharge side of the compressor 101. The lubricating oil separated by the oil separator 107 can be guided to the gas-liquid separator 106 through a pipe. A one-way valve can also be provided to guide the separated refrigerant to the four-way valve 105.

[0086] The outdoor control circuit 109 is provided in the outdoor unit 100. The outdoor control circuit 109 is usually provided in an electrical box with good sealing performance. The outdoor control circuit 109 includes a processor, a storage unit, an input / output interface, a communication interface, and the like. The processor can be a special-purpose processor, a central processing unit (CPU), or the like. The processor can access the storage unit to execute instructions or application programs stored in the storage unit to implement related functions. The storage unit can include volatile memory and / or non-volatile memory. The input / output interface can be communicatively connected with various sensors provided in the outdoor unit 100 to receive detection values of various sensors provided in the outdoor unit 100. The sensors include, but are not limited to, an outdoor temperature sensor, a temperature sensor on the suction side of the compressor 101, a temperature sensor on the discharge side, and a pressure sensor on the discharge side, and the like. The input / output interface can be communicatively connected with the frequency conversion module, the compressor 101, the outdoor fan 104, the four-way valve 105, the outdoor electronic expansion valve 103, and the like to output control instructions generated by the processor to them. The communication interface can support different wireless communication protocols, such as WiFi, Bluetooth, near field communication, NB-IoT, and the like, to communicatively connect with other electronic devices, including but not limited to a cloud server 700, a computer (upper computer), a mobile phone, a tablet computer, a PDA, a control tool, a wearable device, and a vehicle-mounted device, and the like.

[0087] In some embodiments of the present application, the air conditioning system 10 can include multiple outdoor units 100. Each outdoor unit 100 can work independently, or can be configured to work in groups, such as two outdoor units 100 per group, four outdoor units 100 per group, and the like. In some embodiments of the present application, each outdoor unit 100 or each group of outdoor units 100 is provided with a corresponding indoor unit 200 to form a combination working mode of one indoor unit 200 and multiple indoor units 200.

[0088] In some embodiments of the present application, the indoor unit 200 can adopt a separate air supply structure, such as a wall-mounted air supply structure, a floor-mounted air supply structure, a ducted air supply structure, or an air supply structure embedded in the ceiling, etc. The air supply structure includes a shell 204 having a return air inlet for drawing in air and an air supply outlet 205 for supplying the heat-exchanged air into the air-conditioned room. The indoor fan 202 and the indoor heat exchanger 201 are arranged in the shell 204. The indoor fan 202 is arranged near the indoor heat exchanger 201.

[0089] In some embodiments of the present application, the indoor unit 200 is matched with a corresponding wire controller, which is fixedly installed on the wall of the air-conditioned room. The wire controller is provided with an operation interface for inputting the set temperature and operation mode, and a display interface for displaying the real-time temperature of the air-conditioned room and the running state of the air conditioning system 10. In some embodiments of the present application, the indoor unit 200 is matched with a corresponding remote controller, which is in communication connection with the indoor unit 200. The remote controller is provided with a button for inputting the set temperature and operation mode, and a display interface for displaying the real-time temperature of the air-conditioned room and the running state of the air conditioning system 10. In some embodiments of the present application, the indoor unit 200 is matched with a corresponding mobile control terminal, which is in communication connection with the indoor unit 200. The mobile control terminal has an application interface, through which the set temperature and operation mode can be inputted and the real-time temperature or running state of the air-conditioned room can be displayed. In some embodiments of the present application, the mobile control terminal can be a computer, a tablet computer, a mobile phone, a wearable device, etc.

[0090] In some embodiments of the present application, the control system of the indoor unit 200 can determine the demand in the room through sensors (such as indoor air quality sensors) and automatically switch modes. For example, when the air quality is poor, the system can automatically start the air purification function, or when the humidity is high, the dehumidification mode can be automatically started. The indoor unit 200 can also have a humidity control function, especially in the dehumidification mode, the air conditioner not only adjusts the temperature, but also removes the moisture in the air through the condensation process. The humidity sensor will detect the indoor humidity in real time and provide feedback to the control system, so that it can automatically adjust the operation mode according to the set humidity range.

[0091] In some embodiments of the present application, the indoor unit 200 is provided with an indoor control circuit 203, which can be provided with an indoor controller. The indoor controller is configured to drive the indoor fan 202 to work, display various parameters on the display panel, human-computer interaction, receive and process sampling signals of various sensors, and realize necessary communication functions. The indoor control circuit 203 also includes storage units, processors, input / output interfaces, communication interfaces, and other electrical components. The storage unit can include volatile memory and / or non-volatile memory. The storage unit is configured to store instructions or data associated with at least one component of the indoor unit 200, such as storing an application program. For example, the application program can be used to adjust the temperature of the air conditioning room by adjusting the different speed gears of the fan. The indoor processor can be a dedicated processor, a central processing unit (CPU), etc. The indoor processor can access the storage unit to execute instructions stored in the storage unit to achieve related functions.

[0092] In some embodiments of the present application, the input / output interface can be in communication connection with various sensors provided in the indoor unit 200 to receive detection values of various sensors provided in the indoor unit 200. The sensors include but are not limited to an air temperature sensor provided at the return air inlet, a humidity sensor provided at the return air inlet, an air temperature sensor provided at the supply air outlet 205, a refrigerant temperature sensor provided at the inlet end of the indoor heat exchanger 201, a refrigerant temperature sensor provided at the outlet end of the indoor heat exchanger 201, and the like. The input / output interface can be a serial communication interface. The input / output interface can also be in communication connection with indicator lights, buzzers, stepper motors, and other components to output control instructions to them. The stepper motor can be a driving component of the air deflector. The communication interface can be a software interface supporting different wireless communication protocols, such as WiFi, Bluetooth, etc. The indoor control circuit 203 is usually provided with a power supply circuit to provide voltages such as 12V and 5V. The outdoor unit 100 control circuit and the indoor control circuit 203 are in communication connection. In some embodiments of the present application, the outdoor unit 100 control circuit and the indoor control circuit 203 jointly serve as the control part to perform control of the air conditioning system 10. Taking one outdoor unit 100 and multiple indoor units 200 as an example, the multiple indoor units 200 are respectively connected with the outdoor unit 100 through the liquid-side on-line pipe 400 and the gas-side on-line pipe 300. To automatically cut off the refrigerant supply of the indoor unit 200 when a dangerous situation such as refrigerant leakage is detected, a cutting device 500 is also included. The execution part of the cutting device 500 mainly includes a solenoid valve, which cuts off the refrigerant supply of the indoor unit 200 to avoid dangerous situations such as fire or poisoning.

[0093] As shown in FIG. 2, in some embodiments of the present application, the air conditioning system 10 further comprises a configuration module 600. The configuration module 600 is configured to generate a configuration scheme of the cut-off device. In some embodiments of the present application, the generated configuration scheme corresponds to one outdoor unit 100 fluidly connected to multiple indoor units 200. In some embodiments of the present application, the generated configuration scheme corresponds to a group of outdoor units 100 fluidly connected to multiple indoor units 200. In some embodiments of the present application, the generated configuration scheme includes the number of cut-off devices determined according to system requirements and safety redundancy considerations, including the interlocking logic of the cut-off device, to ensure that the supply of refrigerant to the indoor unit 200 can be cut off in time when an abnormal situation occurs, preventing accidents.

[0094] As shown in FIG. 3, the configuration module 600 includes a processor 601, a storage unit 602, an input / output interface 603, a communication interface 604, and the like. The processor 601 is implemented by an MCU, and the configuration module 600 can be a system on a chip. In some embodiments of the present application, the configuration module 600 can be implemented by a centralized controller. In some embodiments of the present application, the configuration module 600 can be implemented by a server. In some embodiments of the present application, the configuration module 600 can be implemented by a cloud platform. In some embodiments of the present application, the configuration module 600 can be implemented by a handheld terminal 800 used by an operator. In some embodiments of the present application, part of the functions of the configuration module 600 can be implemented by one or more combinations of the centralized controller, the server 700, the cloud platform, or the handheld terminal 800, and the other part of the functions can be implemented by the outdoor unit 100 control circuit and / or the indoor control circuit 203, as shown in FIG. 2.

[0095] In some embodiments of the present application, the configuration module 600 can dynamically adjust the configuration scheme according to real-time data such as outdoor temperature, indoor load, energy efficiency requirements, etc. For example, if the indoor load changes, the configuration module 600 can recalculate and adjust the corresponding number or position of the cutoff devices to ensure that the system can still operate safely and efficiently when the load changes. The configuration module 600 can work with centralized controllers, servers, cloud platforms, or handheld terminals 800 and other devices to manage the interaction between multiple devices and modules. Through centralized management and scheduling, the configuration module 600 can monitor the operating conditions of the entire system in real time, perform fault prediction and diagnosis, and provide timely adjustment and repair recommendations when abnormalities occur. The configuration module 600 communicates with sensors, control circuits and other devices in the system in real time to continuously monitor the status of the system. Once an abnormal situation is detected, such as refrigerant leakage, excessive temperature, pressure abnormalities, etc., the configuration module 600 can respond quickly according to the pre-set logic and safety standards, and perform necessary safety measures such as automatically cutting off the refrigerant supply, shutting down related devices, or activating the emergency alarm system.

[0096] As shown in FIG. 4, in some embodiments of the present application, the configuration module 600 can include a generation part 611. Each of these parts can be implemented by a processor running a program. In some embodiments of the present application, the generation part 611 is configured to perform a leakage amount safety check based on a hypothetical leakage amount. The generation part 611 generates an initial scheme for configuring the cutoff device according to the results of the leakage amount safety check. In some embodiments of the present application, performing a leakage amount safety check based on a hypothetical leakage amount involves assuming a scenario in which leakage may occur based on the design and operating conditions of the system, estimating the possible leakage amount based on the assumed leakage scenario, and evaluating the potential risks of the hypothetical leakage amount to the indoor environment of the air-conditioned room.

[0097] In some embodiments of the present application, the configuration module 600 can include a checking part 612. The checking part 612 is configured to perform a working condition safety check on the initial scheme based on simulated working conditions. When performing the working condition safety check, the checking part 612 verifies whether the air-conditioned rooms downstream of the cutoff device in the initial scheme are in a safe state. In some embodiments of the present application, performing a working condition safety check on the initial scheme based on simulated working conditions involves simulating actual operating conditions (working conditions) to verify and check the safety and reliability of the initial scheme, with the aim of ensuring that the air-conditioned rooms downstream of the cutoff device are in a safe state under specific working conditions.

[0098] In some embodiments of the present application, the configuration module 600 can comprise a merging unit 613. The merging unit 613 is configured to merge at least two of the initial schemes to generate a merged scheme when the air-conditioned room downstream of the cutoff device is in a safe state. The merging unit 613 is configured to identify redundant cutoff devices that can exist in the initial schemes, merge at least two of the cutoff devices, reduce redundancy while ensuring safety and reliability of the air conditioning system 10.

[0099] In some embodiments of the present application, the configuration module 600 can comprise an output unit 614. The output unit 614 is configured to perform a working condition safety check on the merged scheme based on the simulated working conditions, and output the last merged scheme as a configuration scheme when any of the air-conditioned rooms downstream of the cutoff device is no longer in a safe state. The configuration scheme can be displayed on a display screen to guide an operator to install a corresponding number of cutoff devices at a corresponding location, reduce redundancy while ensuring the safety of each air-conditioned room, and achieve the desired configuration state.

[0100] As shown in FIG. 5, in some embodiments of the present application, the air conditioning system 10 further comprises a detection device 206. The detection device 206 is used to detect the concentration of refrigerant in the air-conditioned room. In some embodiments of the present application, the air conditioning system 10 further comprises an alarm device 207. The alarm device 207 is used to generate an alarm signal when the concentration of refrigerant in the air-conditioned room is higher than a warning concentration. In some embodiments of the present application, the detection device 206 can be located in the indoor unit 200 or in the air-conditioned room 1A, as a separate detection device, or integrated with the alarm device 207 as a detection and alarm device. In some embodiments of the present application, the alarm device 207 can be located in the indoor unit 200 or in the air-conditioning controller of the air-conditioned room 1A or integrated with the detection device 206. In some embodiments of the present application, the generating unit 611 performs a leakage amount safety check based on the assumed leakage amount, which comprises a plurality of steps as shown in FIG. 6.

[0101] Step S101: Assume that refrigerant leaks into one of the air-conditioned rooms to generate an assumed leakage amount.

[0102] In some embodiments of the present application, all of the refrigerant in a refrigeration unit (consisting of one outdoor unit 100 and a plurality of indoor units 200) is assumed to leak into one of the air-conditioned rooms to generate a maximum assumed leakage amount.

[0103] Step S102: Obtain the effective volume parameters of the air-conditioned room.

[0104] In some embodiments of the present application, the effective volume parameter comprises a volume of the air-conditioned room, or comprises a length of the air-conditioned room, a width of the air-conditioned room, and a height (i.e. an effective height) of a location where the refrigerant leakage occurs. In some embodiments of the present application, the effective volume parameter further comprises a number of ventilation openings (e.g. windows and doors) of the air-conditioned room. The effective volume parameter refers to a volume that can be diffused after the refrigerant leakage.

[0105] Step S103: calculating an assumed leakage concentration of the air-conditioned room based on the assumed leakage amount and the effective volume parameter.

[0106] In some embodiments of the present application: the assumed leakage concentration C h of the air-conditioned room can be represented as: h = M h / V h ; where M h is the assumed leakage amount, and V h is the effective volume of the air-conditioned room. In some embodiments of the present application, the assumed leakage concentration C h may be corrected by using the number of ventilation openings (e.g. windows and doors) of the air-conditioned room, for example, the more the ventilation openings, the smaller the assumed leakage concentration C h .

[0107] Step S104: determining whether the assumed leakage concentration is higher than a safety concentration threshold.

[0108] Step S105: in the initial scheme, configuring a cut-off device for the air-conditioned room when the assumed leakage concentration is higher than the safety concentration threshold.

[0109] Step S106: in the initial scheme, not configuring a cut-off device for the air-conditioned room when the assumed leakage concentration is lower than the safety concentration threshold.

[0110] In some embodiments of the present application, the safe concentration threshold is generated based on the lower flammable limit (LFL). For example, it is the product of the lower flammable limit and a safety factor, which is a constant less than or equal to 1. In some embodiments of the present application, the safe concentration threshold is generated based on the lower flammable limit (LFL) and the effective volume parameter of the air conditioning room. In some embodiments of the present application, the safety factor is generated according to the effective height of the air conditioning room, and the higher the effective height of the air conditioning room, the larger the safety factor. For example, if the air conditioning room is not the underground bottom floor and the effective height of the room is higher than or equal to 1.8 meters, the safety factor is 0.75, i.e. the safe concentration threshold is 0.75LFL; and if the effective height of the air conditioning room is less than 1.8 meters, the safety factor is 0.5 or 0.75, i.e. the safe concentration threshold is 0.5LFL or 0.75LFL.

[0111] If the air conditioning room is the underground bottom floor, regardless of the effective height of the room, the upper limit of the safety factor is 0.75, i.e. the upper limit of the safe concentration threshold is 0.75LFL, and the installation is not allowed to be implemented beyond this threshold. When the effective height of the room is higher than or equal to 1.8m and the room has a refrigerant leakage detection alarm device, no cutoff device needs to be configured, and if there is no refrigerant leakage detection alarm device, a cutoff device needs to be configured; when the effective height of the room is less than 1.8m, the safety factor is 0.25 or 0.5, i.e. the safe concentration threshold is 0.25LFL or 0.5LFL.

[0112] In some embodiments of the present application, the generation unit 611 can also assume partial leakage and estimate the leakage amount according to the actual situation of the air conditioning system. These estimates are adjusted according to factors such as pipe design, refrigerant type and system working pressure. According to the number of ventilation openings of the room, the generation unit 611 will also correct the leakage concentration. If the room has good ventilation, the assumed leakage concentration can be reduced, thereby reducing the need to configure a cutoff device. The generation unit 611 can also combine historical data and machine learning algorithms, not only rely on static calculation of assumed leakage amount, but also dynamically predict and improve according to actual data of system operation, to provide more accurate safety checking scheme.

[0113] In some embodiments of the present application, as shown in FIG. 7, the air conditioning system 10 includes one outdoor unit 100 and six indoor units, as shown in 200-1 to 200-6. The six indoor units 200-1 to 200-6 are respectively installed in five air-conditioned rooms: the indoor unit 200-1 and the indoor unit 200-2 are installed in the air-conditioned room 1A, the indoor unit 200-3 is installed in the air-conditioned room 1B, the indoor unit 200-4 is installed in the air-conditioned room 1C, the indoor unit 200-5 is installed in the air-conditioned room 1D, and the indoor unit 200-6 is installed in the air-conditioned room 1E. Among them, the effective volume of the air-conditioned room 1A is large, and the effective volumes of the air-conditioned rooms 1B, 1C, 1D and 1E are small.

[0114] In the configuration scheme of the related art, one cutoff device is designed for each of the air-conditioned rooms 1B, 1C, 1D and 1E, as shown in 511 to 514 in FIG. 7. In some embodiments, it is assumed that all the refrigerants in the air conditioning system 10 leak into the air-conditioned room 1A, the air-conditioned room 1B, the air-conditioned room 1C, the air-conditioned room 1D and the air-conditioned room 1E, respectively, and the effective volume parameters of the air-conditioned rooms 1A, 1B, 1C, 1D and 1E are obtained, the assumed leakage concentration of each air-conditioned room is calculated based on the assumed leakage amount and the effective volume parameter, and when the assumed leakage concentration is higher than the safety concentration threshold corresponding to the air-conditioned room, one cutoff device is configured for the air-conditioned room in the initial scheme. In some embodiments, since the effective volume of the air-conditioned room 1A is large, even if all the refrigerants leak into the air-conditioned room 1A, the assumed leakage concentration is lower than the safety concentration threshold, and there is no safety risk. However, since the effective volumes of the air-conditioned rooms 1B, 1C, 1D and 1E are small, if all the refrigerants leak into any one of them, the assumed leakage concentration is higher than the safety concentration threshold, and therefore, in the initial scheme, one cutoff device is configured for each of the air-conditioned rooms 1B, 1C, 1D and 1E, as shown in 511 to 514 in FIG. 8. An example of the initial scheme is shown in FIG. 8.

[0115] In some embodiments of the present application, the condition safety checking of the initial scheme by the checking unit 612 based on the simulated working condition includes a plurality of steps as shown in FIG. 9.

[0116] Step S201: Obtain the operating parameters of the indoor unit of the air-conditioned room downstream of the cutoff device.

[0117] Step S202: Calculate the refrigerant leakable amount of the indoor unit under the simulated working condition based on the operating parameters.

[0118] Step S203: Obtain the effective volume of the air-conditioned room that satisfies the boundary volume condition.

[0119] Step S204: Calculate the simulated leakage concentration based on the refrigerant leakable amount and the effective volume.

[0120] Step S205: Determine whether the simulated leakage concentration under the working condition is lower than the preset concentration threshold.

[0121] Step S206: If the simulated leakage concentration under the working condition is lower than the preset concentration threshold, it is inferred that the air-conditioned room downstream of the cutoff device is in a safe state.

[0122] Step S207: If the simulated leakage concentration under the working condition is higher than the preset concentration threshold, it is inferred that the air-conditioned room downstream of the cutoff device is not in a safe state.

[0123] In some embodiments of the present application, the operating parameters include refrigeration parameters, heating parameters, and air supply parameters.

[0124] In some embodiments of the present application, before obtaining the operating parameters of the indoor unit of the air-conditioned room downstream of the cutoff device, the checking unit 612 can first define a plurality of simulation working conditions. These working conditions can cover various leakage scenarios that the system may encounter, including but not limited to: a single indoor unit leaks; multiple indoor units leak at the same time; the system leaks under different operating modes (such as refrigeration, heating, dehumidification, etc.); the leakage occurs at the pipe connection, inside the indoor unit, etc. By defining a plurality of simulation working conditions, the safety performance of the system under different conditions can be more comprehensively evaluated, ensuring effective control under various possible risk scenarios. The simulation working conditions can be determined through theoretical analysis or experimental data based on the design parameters and operating conditions of the system. For example, assuming that indoor unit 200-3 leaks under refrigeration mode, or the pipe connection leaks under heating mode, the leakage impact is calculated respectively.

[0125] In some embodiments of the present application, the amount of refrigerant that can leak from the indoor unit under the simulation working condition is the amount of refrigerant that can leak under the most severe condition of the indoor unit. In some embodiments of the present application, the boundary volume condition is the air-conditioned room with the smallest effective volume. In some embodiments of the present application, the working condition safety check on the initial scheme based on the simulation working condition uses only the relationship between the amount of refrigerant that can leak under the most severe condition of all indoor units downstream of the cutoff device and the effective volume of the air-conditioned room with the smallest effective volume to make a determination. If there is only one air-conditioned room downstream of the cutoff device, the effective volume is calculated according to the effective volume of this air-conditioned room.

[0126] In some embodiments of the present application, the operating parameters used to calculate the maximum amount of refrigerant that can leak from the indoor unit under simulated working conditions include the leak detection alarm time of the alarm device 207, the preset closing time of the cutoff device, the maximum amount of refrigerant that can leak from the online pipe, and the maximum amount of refrigerant that can leak from the indoor heat exchanger 201. In some embodiments of the present application, the leak detection alarm time of the alarm device 207 refers to the time interval from the detection of a leak by the leak detection device 206 to the generation of an alarm signal. In some embodiments of the present application, the leak detection alarm time of the alarm device 207 refers to the time interval from the detection of a leak by the alarm device 207 to the stop of the generation of an alarm signal. In some embodiments of the present application, the closing time of the cutoff device refers to the time interval from the generation of an alarm signal by the alarm device 207 to the complete closing of the electromagnetic valve in the cutoff device and the cutting off of the supply of refrigerant to the indoor unit 200. In some embodiments of the present application, the closing time of the cutoff device is preset. In some embodiments of the present application, the maximum amount of refrigerant that can leak from the online pipe refers to the maximum amount of refrigerant that can leak from the online pipe (including the gas-side online pipe 300 and the liquid-side online pipe 400) assuming that a leak occurs. In some embodiments of the present application, the maximum amount of refrigerant that can leak from the indoor heat exchanger refers to the maximum amount of refrigerant that can leak from the indoor heat exchanger assuming that a leak occurs.

[0127] In some embodiments of the present application, the maximum amount of refrigerant that can leak from the indoor unit under simulated working conditions is calculated based on the operating parameters rl The calculation can be performed using the following formula:

[0128] where t r1 is the leak detection alarm time of the alarm device, t cl is the closing time of the cutoff device, p g is the density of the gaseous refrigerant in the gas-side online pipe, l g is the length of the gas-side online pipe, d g is the diameter of the gas-side online pipe; p l is the density of the liquid refrigerant in the liquid-side online pipe, l l is the length of the gas-side online pipe, d l is the diameter of the gas-side online pipe, and V is the volume of the heat exchanger. k is a constant that converts the time unit to a weight unit that can be superimposed based on empirical data.

[0129] where p g and p l are the concentrations detected under severe working conditions, such as one or more of a combination of high-temperature environment, low-temperature environment, high-humidity environment, and high-dust environment. The boundary volume condition is the minimum effective volume of the air-conditioned room, i.e., the minimum effective volume of the air-conditioned room downstream of the cutoff device is obtained and denoted as: V rThe leakage concentration M in the simulation working condition is calculated based on the leakage amount of the refrigerant and the effective volume, M = m rl / V r It is determined whether the leakage concentration M in the simulation working condition is lower than a preset concentration threshold d. The preset concentration threshold d can be generated based on the LFL. In some embodiments of the present application, the preset concentration threshold d is a product of the LFL and a constant less than 1.

[0130] In some embodiments of the present application, the checking unit 612 is further configured to perform a plurality of steps as shown in FIG. 10.

[0131] Step S301: If it is verified that at least one air-conditioned room downstream of the cutting device in the initial scheme is not in a safe state, the checking unit calls a corrected indoor unit operation parameter.

[0132] In some embodiments of the present application, the capacity corresponding to the corrected indoor unit operation parameter is lower than the capacity corresponding to the obtained operation parameter of the indoor unit of the air-conditioned room downstream of the cutting device, i.e., the corrected indoor unit simulates a smaller-capacity indoor unit. In some embodiments of the present application, a plurality of decreasing corrected indoor unit operation parameters are preset and stored. In some embodiments of the present application, the corrected indoor unit operation parameter is the indoor unit capacity. In some embodiments of the present application, the corrected indoor unit operation parameter is the volume of the indoor heat exchanger.

[0133] Step S302: The obtained operation parameter of the indoor unit of the air-conditioned room downstream of the cutting device is corrected with the corrected indoor unit operation parameter.

[0134] In some embodiments of the present application, the indoor unit in the initial scheme is replaced by the simulated indoor unit with a smaller capacity.

[0135] Step S303: The working condition safety check is performed again.

[0136] Step S304: If the working condition safety check is performed again and all the air-conditioned rooms downstream of the cutting device are in a safe state, the corrected indoor unit operation parameter is added to the configuration scheme, and it is suggested to replace the small-capacity indoor unit to reduce the safety risk.

[0137] Step S305: If the working condition safety check is performed again and at least one air-conditioned room downstream of the cutting device is not in a safe state, a smaller set of corrected indoor unit operation parameters is called, and the above steps are executed cyclically.

[0138] In some embodiments of the present application, if the verification unit 612 fails to obtain the verification result that the air-conditioned rooms downstream of the cut-off device are in a safe state, the output unit 614 prohibits output of the configuration scheme. If there is still at least one air-conditioned room downstream of the cut-off device that is not in a safe state based on the minimum set of corrected indoor unit operating parameters, the verification unit 612 is deemed to fail to obtain the verification result that the air-conditioned rooms downstream of the cut-off device are in a safe state, and the output unit 614 prohibits output of the configuration scheme. This means that even if a smaller capacity indoor unit is installed, it is still not possible to achieve a safe state, and construction is not allowed.

[0139] In some embodiments of the present application, the merging unit 613 is configured to merge at least two cut-off devices in the initial scheme from downstream to upstream to generate a merged scheme when the air-conditioned rooms downstream of the cut-off device are in a safe state. For example, as shown in FIG. 11, when the air-conditioned rooms downstream of the cut-off device are in a safe state, the cut-off device 512 and the cut-off device 513 are merged into a new cut-off device 522 to generate a merged scheme. In some embodiments of the present application, the merging unit 613 is configured to merge at least two cut-off devices in the initial scheme when the air-conditioned rooms downstream of the cut-off device are in a safe state, and to determine whether the capacity of the indoor unit downstream of the merged cut-off device is lower than the system performance capacity threshold. If it is lower than the system performance capacity threshold, a merged scheme is generated. In some embodiments of the present application, the system performance capacity threshold is generated based on the capacities of all indoor units downstream of the cut-off device. In some embodiments of the present application, the system performance capacity threshold is the sum of the capacities of all indoor units downstream of the cut-off device, for example, 10 HP.

[0140] In some embodiments of the present application, the merging unit 613 is configured to perform a plurality of steps as shown in FIG. 12.

[0141] Step S401: Determine whether the capacity of the indoor unit downstream of the cut-off device is lower than the system performance capacity threshold.

[0142] Step S402: If the capacity of the indoor unit downstream of the cut-off device is lower than the system performance capacity threshold, generate a merged scheme.

[0143] Step S403: If the capacity of the indoor unit downstream of the cut-off device is higher than the system performance capacity threshold, do not allow generation of a merged scheme to avoid the pressure loss of the cut-off device affecting the system performance of the refrigeration system, causing a significant decrease in system performance.

[0144] In some embodiments of the present application, the merging unit 613 also evaluates whether the merged cut-off device meets the workload requirements of the air conditioning system based on system performance requirements and capacity thresholds. During the evaluation process, the merging unit 613 will consider various working conditions, including the cooling requirements of different indoor units, room effective volume, usage, etc. By simulating these working conditions, the merging unit 613 can accurately predict the performance of the merged system. The merging scheme can also include further improvements to the system configuration, such as improving the layout of the pipeline, reducing energy consumption, improving refrigeration efficiency, etc. These improvements help to improve the overall performance of the system while reducing maintenance costs. The merging unit 613 not only makes judgments based on static capacity data, but also dynamically adjusts the merging strategy according to the real-time running state and load changes of the system. For example, if the system load changes greatly, the merging unit 613 will automatically adjust the merging order and scheme of the cut-off device according to real-time data to ensure that the merging operation matches the system requirements. The merging unit 613 can integrate a feedback mechanism to automatically improve the merging scheme by continuously monitoring the running effect, maintenance records and energy efficiency data of the system. With the help of machine learning algorithms, the system can gradually learn better configuration strategies under different working conditions, further improving the accuracy and efficiency of the merging scheme.

[0145] In some embodiments of the present application, as shown in FIG. 11, when the air conditioning rooms downstream of the cut-off device are in a safe state, the cut-off device 512 and the cut-off device 513 are merged into a new cut-off device 522, the sum of the capacities of the indoor units downstream of the cut-off device 522 is higher than the system performance capacity threshold, and a merging scheme is generated. The output unit 614 is configured to perform working condition safety checking on the merging scheme based on simulated working conditions, and if air conditioning rooms 1D and 1E are both in a safe state, there is a possibility of further merging. Following the order from downstream to upstream, the cut-off device 522 and the cut-off device 514 are merged into a cut-off device 534, the sum of the capacities of the indoor units downstream of the cut-off device 534 is higher than the system performance capacity threshold, a merging scheme is generated, and the output unit 614 further performs working condition safety checking on the merging scheme based on simulated working conditions. If any of the air conditioning rooms 1C, 1D and 1E is no longer in a safe state, the merging scheme as shown in FIG. 13 is output as the configuration scheme.

[0146] If all of the air-conditioned rooms 1C, 1D and 1E are in the safe state, there is a possibility of further merging. Following the order from downstream to upstream, the shutoff device 534 and the shutoff device 511 are merged into a shutoff device 541, the sum of the capacities of the indoor units downstream of the shutoff device 541 is higher than the system performance capacity threshold, and a merging scheme is generated. The output unit 614 further performs a working condition safety check on the merging scheme based on the simulated working conditions. If all of the air-conditioned rooms 1A, 1B, 1C, 1D and 1E are in the safe state, there is a possibility of further merging. However, at this time, there is only one shutoff device in the air conditioning system 10, and no further merging is performed, and the merging scheme as shown in FIG. 14 is output as the configuration scheme.

[0147] In some embodiments of the present application, the configuration module 600 performs a plurality of steps as shown in FIG. 15.

[0148] Step S501: Perform a leakage amount safety check based on the assumed leakage amount, and generate an initial scheme of configuring shutoff devices according to the result of the leakage amount safety check.

[0149] Step S502: Perform a working condition safety check on the initial scheme based on the simulated working conditions, and verify whether the air-conditioned rooms downstream of the shutoff devices in the initial scheme are in the safe state.

[0150] Step S503: If in the safe state, merge at least two shutoff devices in the initial scheme.

[0151] Step S504: If not in the safe state, correct the operation parameters of the indoor units of the air-conditioned rooms downstream of the shutoff devices by modifying the obtained operation parameters of the indoor units.

[0152] Step S505: Determine whether the capacities of the indoor units downstream of the shutoff devices are lower than the system performance capacity threshold.

[0153] Step S506: If lower than the system performance capacity threshold, generate a merging scheme.

[0154] Step S507: Perform a working condition safety check on the initial scheme based on the simulated working conditions, and verify whether the air-conditioned rooms downstream of the shutoff devices in the merging scheme are in the safe state.

[0155] Step S508: If not in the safe state, output the merging scheme as the configuration scheme.

[0156] In some embodiments of the present application, the leakage concentration is calculated by combining the assumed leakage amount with parameters such as the volume of the air-conditioned room, ventilation conditions, etc., and compared with the safety concentration threshold. If the leakage concentration may exceed the safety concentration threshold, the initial scheme will be configured with a cutoff device to cut off the supply of refrigerant in time when leakage occurs. During the checking process, factors such as temperature, humidity, air flow, etc. can be considered to ensure that the scheme can effectively ensure safety under various working conditions. The generated combined scheme will be output in the form of a digital configuration file or a graphical interface to guide subsequent equipment installation and system debugging. The generated combined scheme will be output in the form of a digital configuration file or a graphical interface to guide subsequent equipment installation and system debugging. After generating the combined scheme, the configuration module 600 verifies the safety state of the air-conditioned room downstream of the cutoff device in the combined scheme again by simulating the working condition. This step ensures that the merging operation does not introduce new safety hazards. If problems are found during the re-checking process, the system can return to the adjustment process to further modify the parameters or readjust the merging strategy of the cutoff device.

[0157] Some embodiments of the present application provide a method for generating a configuration scheme applied to an air conditioning system, wherein:

[0158] The air conditioning system comprises:

[0159] an indoor unit installed in an air-conditioned room; and

[0160] a cutoff device configured to cut off the supply of refrigerant of the indoor unit;

[0161] The method comprises:

[0162] performing leakage amount safety checking based on an assumed leakage amount, and generating an initial scheme of configuring the cutoff device according to the result of the leakage amount safety checking;

[0163] performing working condition safety checking on the initial scheme based on simulated working conditions, and verifying whether the air-conditioned room downstream of the cutoff device in the initial scheme is in a safe state during the working condition safety checking;

[0164] when the air-conditioned room downstream of the cutoff device is in a safe state, merging at least two cutoff devices in the initial scheme to generate a combined scheme; and

[0165] performing working condition safety checking on the combined scheme based on simulated working conditions; and when any air-conditioned room downstream of the cutoff device is no longer in a safe state, outputting the last combined scheme as the configuration scheme.

[0166] Some embodiments of the present application provide a device for generating a configuration scheme applied to an air conditioning system, wherein:

[0167] The air conditioning system comprises:

[0168] An indoor unit installed in an air-conditioned room; and

[0169] A cutoff device configured to cut off a refrigerant supply of the indoor unit;

[0170] The device comprises a processor and a memory, the memory stores instructions which, when executed by the processor, cause the processor to perform operations comprising:

[0171] Perform a leakage amount safety check based on an assumed leakage amount, and generate an initial scheme for configuring the cutoff device according to a result of the leakage amount safety check;

[0172] Perform a working condition safety check on the initial scheme based on a simulated working condition, and verify whether an air-conditioned room downstream of the cutoff device in the initial scheme is in a safe state during the working condition safety check;

[0173] When the air-conditioned room downstream of the cutoff device is in a safe state, merge at least two cutoff devices in the initial scheme to generate a merged scheme; and

[0174] Perform a working condition safety check on the merged scheme based on a simulated working condition; and when any air-conditioned room downstream of the cutoff device is no longer in a safe state, output the last merged scheme as the configuration scheme.

[0175] In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. The above only describes some embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An air conditioning system comprising: an indoor unit installed in an air conditioning room; and a cutoff device configured to cut off a refrigerant supply of the indoor unit a configuration module configured to generate a configuration scheme of the cutoff device, and comprising: ； a generating unit configured to perform a leakage amount safety check based on a hypothetical leakage amount, and generate an initial scheme of configuring the cutoff device according to a result of the leakage amount safety check; a checking unit configured to perform a working condition safety check on the initial scheme based on a simulated working condition, and verify whether the air conditioning room downstream of the cutoff device in the initial scheme is in a safe state when performing the working condition safety check; a merging unit configured to merge at least two cutoff devices in the initial scheme to generate a merged scheme when the air conditioning room downstream of the cutoff device is in the safe state; and an output unit configured to perform a working condition safety check on the merged scheme based on the simulated working condition, and output a last merged scheme as the configuration scheme when any of the air conditioning rooms downstream of the cutoff device is no longer in the safe state. 2.The air conditioning system of claim 1, wherein: the generating unit performing the leakage amount safety check based on the hypothetical leakage amount comprises: assuming that the refrigerant leaks into one of the air conditioning rooms to generate the hypothetical leakage amount; obtaining an effective volume parameter of the air conditioning room; calculating an air conditioning room hypothetical leakage concentration based on the hypothetical leakage amount and the effective volume parameter; and configuring one of the cutoff devices for the air conditioning room in the initial scheme when the air conditioning room hypothetical leakage concentration is higher than a safety concentration threshold. 3.The air conditioning system of claim 2, wherein: the checking unit performing the working condition safety check on the initial scheme based on the simulated working condition comprises: obtaining an operating parameter of the indoor unit of the air conditioning room downstream of the cutoff device; calculating a refrigerant leakable amount of the indoor unit under the simulated working condition based on the operating parameter; obtaining an effective volume of the air conditioning room satisfying a boundary volume condition; calculating a simulated working condition leakage concentration based on the refrigerant leakable amount and the effective volume; and verifying that the air conditioning room downstream of the cutoff device is in the safe state when the simulated working condition leakage concentration is lower than a preset concentration threshold. the operating parameter comprises a refrigeration parameter, a heating parameter, and an air supply parameter.

4. The air conditioning system of claim 3, wherein: 5.The air conditioning system of claim 3, wherein: if the checking unit verifies that at least one of the air conditioning rooms downstream of the cutoff device in the initial scheme is not in the safe state, the checking unit is configured to: call a corrected indoor unit operating parameter; correct the obtained operating parameter of the indoor unit of the air conditioning room downstream of the cutoff device with the corrected indoor unit operating parameter, and perform the working condition safety check again until the air conditioning room downstream of the cutoff device is in the safe state; and wherein the capacity corresponding to the corrected indoor unit operating parameter is lower than the capacity corresponding to the obtained operating parameter of the indoor unit of the air conditioning room downstream of the cutoff device. 6.The air conditioning system of claim 4, wherein: if the checking unit fails to obtain a checking result that the air conditioning room downstream of the cutoff device is in the safe state, the output unit prohibits outputting the configuration scheme. ​ 7. The air conditioning system according to any one of claims 1 to 6, wherein: the merging unit is configured to merge at least two of the initial schemes of the cutoff devices to generate a merged scheme from downstream to upstream when the air-conditioned room downstream of the cutoff device is in a safe state.

8. The air conditioning system according to any one of claims 1 to 6, wherein: the merging unit is configured to merge at least two of the initial schemes of the cutoff devices and to determine whether the capacity of the indoor unit downstream of the merged cutoff device is lower than a system performance capacity threshold when the air-conditioned room downstream of the cutoff device is in a safe state; if lower than the system performance capacity threshold, the merged scheme is generated.

9. The air conditioning system according to any one of claims 1 to 6, further comprising: a detection unit configured to detect a refrigerant concentration in the air-conditioned room; and an alarm unit configured to generate an alarm signal when the refrigerant concentration in the air-conditioned room is higher than a warning concentration threshold.

10. The air conditioning system according to claim 9, wherein: the operating parameters of the refrigerant leakable amount of the indoor unit in the simulated working condition include: a leak detection alarm time of the alarm unit; a cutoff time of the cutoff device; a refrigerant leakable amount in the online pipe; and / or a refrigerant leakable amount of the indoor heat exchanger in the indoor unit.

11. The air conditioning system according to any one of claims 3 to 6, wherein: the safe concentration threshold is generated based on a lower flammable concentration and an effective volume parameter of the air-conditioned room.

12. A method for generating a configuration scheme, applied to an air conditioning system, wherein: the air conditioning system comprises: an indoor unit installed in an air-conditioned room; and a cutoff device configured to cut off a refrigerant supply of the indoor unit; the method comprises: performing a leak amount safety check based on a hypothetical leak amount and generating an initial scheme of configuring the cutoff device according to a result of the leak amount safety check; performing a working condition safety check on the initial scheme based on a simulated working condition, and verifying whether the air-conditioned room downstream of the cutoff device in the initial scheme is in a safe state when performing the working condition safety check; merging at least two of the initial schemes of the cutoff devices to generate a merged scheme from downstream to upstream when the air-conditioned room downstream of the cutoff device is in a safe state; and performing a working condition safety check on the merged scheme based on a simulated working condition; and outputting the last merged scheme as the configuration scheme when any one of the air-conditioned rooms downstream of the cutoff device is no longer in a safe state.

13. An apparatus for generating a configuration scheme, applied to an air conditioning system, wherein: the air conditioning system comprises: an indoor unit installed in an air-conditioned room; and a cutoff device configured to cut off a refrigerant supply of the indoor unit; the apparatus comprises a processor and a memory, and the memory stores instructions which, when executed by the processor, cause the processor to perform operations comprising: performing a leak amount safety check based on a hypothetical leak amount and generating an initial scheme of configuring the cutoff device according to a result of the leak amount safety check; performing a working condition safety check on the initial scheme based on a simulated working condition, and verifying whether the air-conditioned room downstream of the cutoff device in the initial scheme is in a safe state when performing the working condition safety check; merging at least two of the initial schemes of the cutoff devices to generate a merged scheme from downstream to upstream when the air-conditioned room downstream of the cutoff device is in a safe state; and performing a working condition safety check on the merged scheme based on a simulated working condition; and outputting the last merged scheme as the configuration scheme when any one of the air-conditioned rooms downstream of the cutoff device is no longer in a safe state. The initial scheme is subjected to working condition safety checking based on simulated working conditions, and when the working condition safety checking is performed, it is verified whether the air-conditioned room downstream of the cutting device in the initial scheme is in a safe state; When the air-conditioned room downstream of the cutting device is in a safe state, at least two cutting devices in the initial scheme are combined to generate a combined scheme; and The combined scheme is subjected to working condition safety checking based on simulated working conditions; and when any air-conditioned room downstream of the cutting device is no longer in a safe state, the last combined scheme is output as the configuration scheme.

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