Control method and control apparatus for air conditioning system, and air conditioning system

Abstract

The present application relates to the technical field of air conditioning systems. Provided are a control method and control apparatus for an air conditioning system, and an air conditioning system. The control method for an air conditioning system comprises: acquiring an ambient temperature, and a refrigerant pressure in a refrigerant pipe; on the basis of the ambient temperature and a preset saturated pressure relationship, determining a saturated refrigerant pressure in the refrigerant pipe; on the basis of the refrigerant pressure and the saturated refrigerant pressure, determining a pipe state of the refrigerant pipe, wherein the pipe state comprises a sealed state and a leakage state; when the pipe state is the sealed state, controlling an air conditioning system to operate in a preset mode; and when the pipe state is the leakage state, determining an emergency mode of the air conditioning system on the basis of the refrigerant pressure, and controlling the air conditioning system to execute the emergency mode, wherein the emergency mode at least comprises a power-off mode and a refrigerant discharge mode. When a refrigerant pipe is in a leakage state, an air conditioning system is controlled to execute an emergency mode, such that an electric control component of the air conditioning system can be prevented from igniting leaked refrigerant, thereby improving the safety of the air conditioning system.

Description

Control method and control device of air conditioning system, and air conditioning system

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 2023115332846, filed on November 16, 2023, entitled “Control method, control device and air conditioning system for air conditioning system”, which is incorporated herein by reference in its entirety. Technical Field

[0003] The present application relates to the technical field of air-conditioning systems, and in particular to a control method and a control device for an air-conditioning system, and an air-conditioning system. Background Art

[0004] Air conditioning systems are often installed in closed indoor environments to adjust the ambient temperature and improve occupant comfort. These systems consist of electronic control components and refrigerant piping, which circulates an environmentally friendly refrigerant. However, most environmentally friendly refrigerants are flammable, posing a risk of sparking when the electronic control components are activated. If flammable refrigerant leaks and ignites within the electronic control components' circuits, it can easily cause combustion or explosion, potentially resulting in serious damage.

[0005] Summary of the Invention

[0006] The present application aims to solve at least one of the technical problems existing in the related art. To this end, the present application proposes a control method for an air-conditioning system. When a refrigerant pipeline of the air-conditioning system is in a leaking state, the emergency mode of the air-conditioning system is determined based on the refrigerant pressure in the refrigerant pipeline, and the air-conditioning system is controlled to execute the emergency mode. This can prevent the electronic control components of the air-conditioning system from igniting the leaked refrigerant, thereby improving the safety of the air-conditioning system and avoiding harmful consequences.

[0007] The present application also provides a control device for an air-conditioning system.

[0008] The present application also provides an air conditioning system.

[0009] According to the first embodiment of the present application, a method for controlling an air-conditioning system includes:

[0010] Obtaining an ambient temperature and a refrigerant pressure in a refrigerant pipeline, determining a saturated refrigerant pressure in the refrigerant pipeline based on a relationship between the ambient temperature and a predetermined saturated pressure, and determining a pipeline state of the refrigerant pipeline based on the refrigerant pressure and the saturated refrigerant pressure; wherein the pipeline state includes a sealed state and a leaking state;

[0011] When the pipeline state is the sealed state, controlling the air conditioning system to operate according to a preset mode;

[0012] When the pipeline state is the leakage state, the emergency mode of the air-conditioning system is determined according to the refrigerant pressure, and the air-conditioning system is controlled to execute the emergency mode; wherein, the emergency mode includes at least a power-off mode and a refrigerant discharge mode.

[0013] According to one embodiment of the present application, the step of determining the pipeline state of the refrigerant pipeline according to the refrigerant pressure and the saturated refrigerant pressure specifically includes:

[0014] When the refrigerant pressure is greater than or equal to the saturated refrigerant pressure, the pipeline state is the sealed state;

[0015] When the refrigerant pressure is lower than the saturated refrigerant pressure, the pipeline state is the leakage state.

[0016] According to one embodiment of the present application, the step of determining the emergency mode of the air-conditioning system according to the refrigerant pressure specifically includes:

[0017] When the refrigerant pressure is less than the saturated refrigerant pressure and greater than the minimum refrigerant operating pressure, the emergency mode is the refrigerant discharge mode;

[0018] When the refrigerant pressure is less than or equal to the minimum refrigerant operating pressure, the emergency mode is the power-off mode.

[0019] According to one embodiment of the present application, when the emergency mode is the refrigerant discharge mode, the step of controlling the air-conditioning system to execute the emergency mode specifically includes:

[0020] Control the fan to run until the preset conditions are met;

[0021] The preset conditions include: the running time of the fan is greater than or equal to the preset time, or the refrigerant concentration in the lower accommodating chamber is less than or equal to the preset safety concentration.

[0022] According to one embodiment of the present application, when the emergency mode is the refrigerant discharge mode, the step of controlling the air-conditioning system to execute the emergency mode further includes:

[0023] The control display panel issues a prompt message; wherein the prompt message at least includes a maintenance prompt message.

[0024] According to one embodiment of the present application, the control method further includes:

[0025] Acquiring the real-time temperature inside the sealed box, and determining the temperature state of the air-conditioning system according to the real-time temperature and a predetermined temperature load relationship; wherein the temperature state includes a normal state and an over-temperature state;

[0026] When the temperature state is the over-temperature state, reducing the operating load of the air-conditioning system to a target load; wherein the ratio between the target load and the operating load is less than 1;

[0027] When the temperature state is the normal state, the air conditioning system is controlled to operate according to a preset mode.

[0028] According to one embodiment of the present application, when the temperature state is the over-temperature state, the control method further includes:

[0029] The heat dissipation air duct is controlled to be open, and the heat dissipation gear of the fan is determined according to the real-time temperature and the predetermined heat dissipation gear relationship, and the fan is controlled to operate at the heat dissipation gear.

[0030] According to one embodiment of the present application, the step of reducing the operating load of the air-conditioning system to the target load further includes:

[0031] When the operating load is less than or equal to a preset load, the air conditioning system is controlled to shut down.

[0032] According to the second aspect of the present application, a control device for an air conditioning system is provided, comprising:

[0033] an acquisition module, configured to acquire an ambient temperature and a refrigerant pressure in a refrigerant pipeline, determine a saturated refrigerant pressure in the refrigerant pipeline based on a relationship between the ambient temperature and a predetermined saturated pressure, and determine a pipeline state of the refrigerant pipeline based on the refrigerant pressure and the saturated refrigerant pressure; wherein the pipeline state includes a sealed state and a leaking state;

[0034] A control module is used to control the air-conditioning system to operate in a preset mode when the pipeline state is the sealed state; and when the pipeline state is the leakage state, determine the emergency mode of the air-conditioning system according to the refrigerant pressure, and control the air-conditioning system to execute the emergency mode; wherein the emergency mode includes at least a power-off mode and a refrigerant discharge mode.

[0035] According to the embodiment of the third aspect of the present application, the air-conditioning system provided includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps of the control method of the air-conditioning system provided in the embodiment of the first aspect of the present application are implemented.

[0036] The above one or more technical solutions in this application have at least one of the following technical effects:

[0037] According to the control method of the air-conditioning system provided in the embodiment of the present application, the method includes: obtaining the ambient temperature and the refrigerant pressure in the refrigerant pipeline, determining the saturated refrigerant pressure in the refrigerant pipeline according to the ambient temperature and the predetermined saturated pressure relationship, and determining the pipeline state of the refrigerant pipeline according to the refrigerant pressure and the saturated refrigerant pressure; wherein the pipeline state includes a sealed state and a leaking state; when the pipeline state is a sealed state, controlling the air-conditioning system to operate according to a preset mode; when the pipeline state is a leaking state, determining the emergency mode of the air-conditioning system according to the refrigerant pressure, and controlling the air-conditioning system to execute the emergency mode; wherein the emergency mode includes at least a power-off mode and a refrigerant discharge mode. During the operation of the air-conditioning system, when the refrigerant pipeline of the air-conditioning system is in a leaking state, determining the emergency mode of the air-conditioning system according to the refrigerant pressure in the refrigerant pipeline, and controlling the air-conditioning system to execute the emergency mode can prevent the electronic control components of the air-conditioning system from igniting the leaked refrigerant, thereby improving the safety of the air-conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] FIG1 is a flow chart of a method for controlling an air-conditioning system according to an embodiment of the present application;

[0040] FIG2 is a second flow chart of the control method of the air-conditioning system provided in an embodiment of the present application;

[0041] FIG3 is a schematic structural diagram of an air-conditioning system provided in an embodiment of the present application;

[0042] FIG4 is a schematic structural diagram of a control device for an air-conditioning system provided in an embodiment of the present application;

[0043] FIG5 is a schematic structural diagram of an electronic device of an air-conditioning system provided in an embodiment of the present application.

[0044] Reference numerals: 300, sealed box; 301, upper accommodating cavity; 302, lower accommodating cavity; 303, first heat dissipation through hole; 304, second heat dissipation through hole; 305, air inlet and outlet; 306, refrigerant through hole; 401, acquisition module; 402, control module. DETAILED DESCRIPTION

[0045] To make the purpose, technical solutions, and advantages of the invention more clear, the technical solutions of the invention will be clearly described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the invention, not all of them. Based on the embodiments of the invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the invention.

[0046] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0047] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0048] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0050] In related technologies, environmentally friendly refrigerants circulate within refrigerant pipelines. However, most environmentally friendly refrigerants are flammable, posing a risk of sparking when electronic control components are activated. If flammable refrigerant leaks and ignites within the electronic control components, it can easily cause combustion or explosion, potentially resulting in serious damage.

[0051] The air-conditioning system involved in the present application includes a sealed box body 300, which is divided into an upper accommodating chamber 301 and a lower accommodating chamber 302 by a partition, and the upper accommodating chamber 301 and the lower accommodating chamber 302 are sealed. The upper accommodating chamber 301 is used to place the electronic control components, and the lower accommodating chamber 302 is used to place the fan and the refrigerant pipeline. Please refer to Figure 3, an embodiment of the present application provides a schematic diagram of the sealed box body 300, a first heat dissipation through-hole 303 is provided at a position of the sealed box body 300 corresponding to the upper accommodating chamber 301, a second heat dissipation through-hole 304 is provided on the partition, and the electronic control components are placed in the upper accommodating chamber 301, wherein the first heat dissipation through-hole 303 and the second heat dissipation through-hole 304 are located on different sides of the electronic control components. The second heat dissipation through-hole 304 is connected to the upper accommodating chamber 301 and the lower accommodating chamber 302. A fan is provided on one side of the lower accommodating chamber 302, such as the left side in Figure 1. At this time, the refrigerant pipeline is provided on the right side of the lower accommodating chamber 302. The sealed box 300 is provided with a refrigerant through-hole 306 at the bottom position corresponding to the refrigerant pipeline. The density of the refrigerant is greater than that of the air, so it can flow out along the refrigerant through-hole 306 under natural conditions. The sealed box 300 is provided with an air inlet and outlet 305 on the side wall corresponding to the lower accommodating chamber 302. The air inlet and outlet 305 can allow natural wind to enter and exit, and can also provide air with balanced air pressure for the fan. The sealed box 300 is provided with an exhaust port (not shown in the figure) at the position corresponding to the exhaust side of the fan. The exhaust port is located directly in front of the fan.

[0052] The air conditioning system provided in the embodiment of the present application has a sealed housing 300 that is a heat-dissipating metal housing. Heat generated by the electronic control components during operation can be released naturally through the first heat dissipation holes 303 and the housing, or actively dissipated through the heat dissipation duct formed by the first heat dissipation holes 303, the upper accommodating cavity 301, the second heat dissipation holes 304, the lower accommodating cavity 302, and the exhaust port directly in front of the fan. Refrigerant leaking from the refrigerant pipeline can flow out naturally through the refrigerant holes 306 under the action of gravity, or it can be actively discharged through the refrigerant duct formed by the refrigerant holes 306 and the exhaust port directly in front of the fan.

[0053] A ventilation valve may be provided at the second heat dissipation through hole 304 , and the ventilation valve may be closed in a non-heat dissipation mode, thereby isolating the upper accommodating cavity 301 from the lower accommodating cavity 302 .

[0054] According to the first aspect of the present application, the control method of the air-conditioning system provided in the embodiment is applied at least to the above-mentioned air-conditioning system, as shown in FIG1 , and includes:

[0055] Obtain the ambient temperature and the refrigerant pressure in the refrigerant pipeline, determine the saturated refrigerant pressure in the refrigerant pipeline based on the ambient temperature and the predetermined saturated pressure relationship, and determine the pipeline state of the refrigerant pipeline based on the refrigerant pressure and the saturated refrigerant pressure; wherein the pipeline state includes a sealing state and a leakage state.

[0056] It is understandable that a temperature sensor is provided in the air-conditioning system, and the current ambient temperature can be detected by the temperature sensor. In some cases, the air-conditioning system includes a communication component, and the communication component signal is connected to an external temperature sensor or connected to the Internet, and the current ambient temperature can be obtained. At a specific ambient temperature, the saturated refrigerant pressure in the refrigerant pipeline is determined, so the saturated refrigerant pressure in the refrigerant pipeline can be determined based on the current ambient temperature and saturated pressure relationship / chart. The pipeline status of the refrigerant pipeline can be determined based on the real-time refrigerant pressure in the refrigerant pipeline and the calculated saturated refrigerant pressure. For example, when there is a refrigerant leak, the real-time refrigerant pressure will be lower than the saturated refrigerant pressure.

[0057] When the pipeline status is sealed, the air conditioning system is controlled to operate according to the preset mode.

[0058] It is understandable that when the pipeline is in a sealed state, there is no leaked refrigerant in the lower accommodating chamber, and there is no danger when the electronic control components of the air-conditioning system are working, and it can operate according to the preset mode.

[0059] When the pipeline state is a leakage state, the emergency mode of the air-conditioning system is determined according to the refrigerant pressure, and the air-conditioning system is controlled to execute the emergency mode; wherein the emergency mode includes at least a power-off mode and a refrigerant discharge mode.

[0060] It is understandable that when the refrigerant pipeline is in a leaking state, the refrigerant in the lower accommodating chamber can flow out along the refrigerant through-hole. In order to prevent the leaked refrigerant from entering the upper accommodating chamber and reacting with the electronic control components, the emergency mode of the air-conditioning system can be determined according to the refrigerant pressure. The emergency mode includes at least a power-off mode and a refrigerant discharge mode. Both emergency modes can reduce the risk of refrigerant combustion and are suitable for different dangerous situations.

[0061] Please refer to FIG1 . The control method of the air-conditioning system provided in the embodiment of the present application includes the following process.

[0062] S100: Obtain the ambient temperature and the refrigerant pressure in the refrigerant pipeline.

[0063] S110 : Determine the saturated refrigerant pressure in the refrigerant pipeline according to the ambient temperature and a predetermined saturated pressure relationship.

[0064] S120: Determine the pipeline status of the refrigerant pipeline according to the refrigerant pressure and the saturated refrigerant pressure.

[0065] S130: Determine whether the pipeline is in a leaking state.

[0066] If yes, execute step S140; if no, execute step S150.

[0067] S140: Determine an emergency mode of the air-conditioning system according to the refrigerant pressure, and control the air-conditioning system to execute the emergency mode.

[0068] S150: Control the air conditioning system to operate according to a preset mode.

[0069] Through the above steps S100 to S150, during the operation of the air-conditioning system, when the refrigerant pipeline of the air-conditioning system is in a leakage state, the emergency mode of the air-conditioning system is determined according to the refrigerant pressure in the refrigerant pipeline, and the air-conditioning system is controlled to execute the emergency mode, which can prevent the electronic control components of the air-conditioning system from igniting the leaked refrigerant, improve the safety of the air-conditioning system, and avoid harmful consequences.

[0070] It should be noted that, in other air-conditioning systems, if the refrigerant pipeline and the electronic control components are separated and there is a risk of igniting the refrigerant, the control method of the air-conditioning system provided in the embodiment of the present application can also be operated.

[0071] In some embodiments, the step of determining the pipeline status of the refrigerant pipeline according to the refrigerant pressure and the saturated refrigerant pressure specifically includes the following process.

[0072] S121. When the refrigerant pressure is greater than or equal to the saturated refrigerant pressure, the pipeline state is a sealed state.

[0073] S122. When the refrigerant pressure is lower than the saturated refrigerant pressure, the pipeline state is a leakage state.

[0074] In steps S121 and S122, the real-time refrigerant pressure in the refrigerant pipeline and the calculated saturated refrigerant pressure can be used to determine the pipeline status of the refrigerant pipeline. For example, if there is a refrigerant leak, the real-time refrigerant pressure will be lower than the saturated refrigerant pressure. When the refrigerant pressure is greater than or equal to the saturated refrigerant pressure, it proves that there is no refrigerant leak in the refrigerant pipeline. When the refrigerant pressure is less than the saturated refrigerant pressure, it proves that some refrigerant in the refrigerant pipeline has leaked, causing the refrigerant pressure to fall below the saturated refrigerant pressure.

[0075] In some embodiments, the step of determining the emergency mode of the air-conditioning system according to the refrigerant pressure specifically includes the following process.

[0076] S141. When the refrigerant pressure is less than the saturated refrigerant pressure and greater than the minimum refrigerant operating pressure, the emergency mode is the refrigerant discharge mode.

[0077] In step S141, if the refrigerant pressure in the refrigerant pipeline is between the saturated refrigerant pressure and the minimum refrigerant operating pressure, the air-conditioning system has a small amount of refrigerant leakage, but it can still maintain the most basic operation and meet the user's cooling or heating needs. Therefore, the air-conditioning system can be controlled to operate in the refrigerant discharge mode to discharge the less refrigerant in the lower accommodating chamber. At the same time, the air-conditioning system can be controlled to operate in a preset working mode to meet the user's normal usage functions. When operating in the refrigerant discharge mode, the small amount of refrigerant leaking from the lower accommodating chamber is quickly discharged to the outside of the sealed box and will not cause any danger to the electronic control components.

[0078] S142. When the refrigerant pressure is less than or equal to the minimum refrigerant operating pressure, the emergency mode is the power-off mode.

[0079] In step S142, if the refrigerant pressure is less than or equal to the minimum refrigerant operating pressure, it proves that the refrigerant leakage in the refrigerant pipeline is serious. At this time, emergency measures such as power off and shutdown are required to prevent the leaked refrigerant from being ignited by the electronic control components, thereby improving the safety of the air-conditioning system.

[0080] In some embodiments, when the emergency mode is the refrigerant discharge mode, the step of controlling the air conditioning system to execute the emergency mode specifically includes:

[0081] S1411. Control the fan to operate until a preset condition is met; wherein the preset condition includes: the fan operation time is greater than or equal to a preset time, or the refrigerant concentration in the lower accommodating chamber is less than or equal to a preset safety concentration.

[0082] It is understood that when the refrigerant is discharged in emergency mode, the fan draws the refrigerant and air from the lower chamber through the exhaust port in front of the fan. The refrigerant holes balance the air pressure and draw all the refrigerant from the bottom of the lower chamber to the fan for discharge through the exhaust port. To completely discharge the refrigerant, the fan must run for at least the preset time or until the refrigerant concentration is equal to or less than the preset safety concentration.

[0083] In some embodiments, when the emergency mode is the refrigerant discharge mode, the step of controlling the air conditioning system to execute the emergency mode further includes:

[0084] The control display panel issues a prompt message, wherein the prompt message at least includes a maintenance prompt message.

[0085] It is understandable that when the air-conditioning system executes the refrigerant discharge mode, the air-conditioning system does not shut down, but can maintain normal operation. At this time, a prompt message can be issued through the display panel to remind the user that the refrigerant pressure in the refrigerant pipeline is low, there is a leak, and maintenance is required, etc., to remind the user to eliminate potential dangers as soon as possible.

[0086] In some embodiments, the air conditioning system control method further includes:

[0087] The real-time temperature inside the sealed box is obtained, and the temperature state of the air-conditioning system is determined according to the real-time temperature and a predetermined temperature load relationship; wherein the temperature state includes a normal state and an over-temperature state.

[0088] When the temperature state is an over-temperature state, the operating load of the air-conditioning system is reduced to a target load; wherein the ratio between the target load and the operating load is less than 1.

[0089] When the temperature is normal, the air conditioning system is controlled to operate according to the preset mode.

[0090] It is understandable that a temperature sensor is provided in the sealed box, and the temperature sensor is used to monitor the temperature of the electronic control component in real time to avoid circuit failure when the temperature is high. The sealed box provided in the embodiment of the present application solves the risk of refrigerant leakage, so more attention needs to be paid to the heat dissipation of the electronic control component. The sealed box is made of heat-dissipating materials, which can improve the heat dissipation capacity of the air-conditioning system. In order to ensure the stable operation of the air-conditioning system, the temperature inside the sealed box needs to be controlled at a reliable temperature Tam. If the real-time temperature is greater than the reliable temperature Tam, the temperature state is an over-temperature state; if the real-time temperature is less than or equal to the reliable temperature Tam, the temperature state is a normal state. When the temperature state is an over-temperature state, the operating load of the air-conditioning system is reduced to the target load, thereby reducing the heat dissipation of the electronic control component, compressor or fan, which helps to reduce the temperature inside the sealed box, thereby ensuring the stable operation of the air-conditioning system.

[0091] Please refer to FIG2 . The control method of the air-conditioning system provided in the embodiment of the present application includes the following process.

[0092] S200: Obtain the real-time temperature inside the sealed box.

[0093] S210: Determine the temperature state of the air-conditioning system according to the real-time temperature and a predetermined temperature load relationship.

[0094] S220: Determine whether the temperature state is an over-temperature state.

[0095] If yes, execute step S230; if no, execute step S240.

[0096] S230: Reduce the operating load of the air-conditioning system to a target load.

[0097] S240: Control the air conditioning system to operate according to a preset mode.

[0098] The above steps S200 to S240 help to reduce the temperature inside the sealed box, thereby ensuring the stable operation of the air-conditioning system.

[0099] In some embodiments, when the temperature state is an over-temperature state, the control method of the air-conditioning system further includes:

[0100] S231, controlling the conduction of the heat dissipation air duct, determining the heat dissipation gear of the fan according to the real-time temperature and the predetermined heat dissipation gear relationship, and controlling the fan to operate at the heat dissipation gear.

[0101] In step S231, when the sealed box is in an overheated state, the heat dissipation duct can be actively controlled. For example, the valve at the second heat dissipation hole can be opened, so that the first heat dissipation hole, the second heat dissipation hole, and the exhaust port form a heat dissipation duct. The sealed box is then actively cooled by the fan, thereby improving the cooling efficiency. Secondly, the fan's heat dissipation gear can be determined based on the real-time temperature and the relationship between the predetermined heat dissipation gears. When the real-time temperature is high, heat can be dissipated at a higher wind speed gear, thereby improving the heat dissipation efficiency. There is a positive correlation between the real-time temperature and the wind speed gear.

[0102] In some embodiments, the step of reducing the operating load of the air conditioning system to the target load further includes:

[0103] When the operating load is less than or equal to the preset load, the air conditioning system is controlled to shut down.

[0104] It is understandable that air conditioning systems employ a periodic adjustment strategy for temperature control. For example, real-time temperature measurements are taken every minute. If the real-time temperature inside the sealed enclosure is high, the operating load is reduced every minute until the enclosure's heat dissipation capacity exceeds its heating capacity. In some cases, as the air conditioning system's operating load gradually decreases, for example, to a value less than or equal to a preset load, the real-time temperature inside the sealed enclosure does not decrease. Therefore, it is necessary to shut down the air conditioning system and promptly investigate the cause of the problem to prevent damage to electronic components.

[0105] The control device of the air-conditioning system provided in accordance with the embodiment of the second aspect of the present application, please refer to FIG4 , includes the following modules.

[0106] The acquisition module 401 is used to obtain the ambient temperature and the refrigerant pressure in the refrigerant pipeline, determine the saturated refrigerant pressure in the refrigerant pipeline based on the ambient temperature and the predetermined saturated pressure relationship, and determine the pipeline state of the refrigerant pipeline based on the refrigerant pressure and the saturated refrigerant pressure; wherein the pipeline state includes a sealing state and a leakage state.

[0107] The control module 402 is used to control the air-conditioning system to operate in a preset mode when the pipeline state is a sealed state; and when the pipeline state is a leakage state, determine the emergency mode of the air-conditioning system according to the refrigerant pressure and control the air-conditioning system to execute the emergency mode; wherein the emergency mode includes at least a power-off mode and a refrigerant discharge mode.

[0108] It should be noted that the above steps S100 to S150, and other steps are only for the convenience of expression, and do not constitute a time sequence limitation for each step in the control method of the air-conditioning system. In addition, some contents are described in detail in the control method of the air-conditioning system provided in the embodiment of the first aspect, and the contents in all the control methods of the air-conditioning system are also applicable to the control device of the air-conditioning system provided in the embodiment of the second aspect. In order to avoid repetition, the control device of the air-conditioning system provided in the embodiment of the second aspect is not described in detail. Similarly, the contents in the above two aspects of the embodiments can be used to explain the contents of all the subsequent aspects of the embodiments, so the repeated contents will not be repeated in the subsequent embodiments. The technical effects of the control device of the air-conditioning system provided in the embodiment of the present application correspond to the technical effects of the above-mentioned control method of the air-conditioning system, and will not be repeated here.

[0109] According to the embodiment of the third aspect of the present application, the air-conditioning system provided includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps of the control method of the air-conditioning system provided in the embodiment of the first aspect of the present application are implemented.

[0110] FIG5 illustrates a schematic diagram of the physical structure of an electronic device for an air conditioning system. The electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840. The processor 810, the communication interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 may invoke logic instructions in the memory 830 to execute a control method for the air conditioning system. The method includes: obtaining an ambient temperature and a refrigerant pressure in a refrigerant pipeline; determining a saturated refrigerant pressure in the refrigerant pipeline based on the ambient temperature and a predetermined saturated pressure relationship; and determining a pipeline state of the refrigerant pipeline based on the refrigerant pressure and the saturated refrigerant pressure; wherein the pipeline state includes a sealed state and a leaking state; when the pipeline state is a sealed state, controlling the air conditioning system to operate in a preset mode; and when the pipeline state is a leaking state, determining an emergency mode of the air conditioning system based on the refrigerant pressure and controlling the air conditioning system to execute the emergency mode; wherein the emergency mode includes at least a power-off mode and a refrigerant discharge mode.

[0111] In addition, the logic instructions in the above-mentioned memory 830 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0112] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0113] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or certain parts of the embodiments.

[0114] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the principles of the present application should be included in the scope of protection of the present application.

Claims

1. A method for controlling an air conditioning system, comprising: Acquiring an ambient temperature and a refrigerant pressure in a refrigerant pipeline, determining a saturated refrigerant pressure in the refrigerant pipeline according to the ambient temperature and a predetermined saturated pressure relationship, and determining a pipeline state of the refrigerant pipeline according to the refrigerant pressure and the saturated refrigerant pressure, wherein the pipeline state includes a sealing state and a leakage state; When the pipeline state is the sealed state, controlling the air conditioning system to operate according to a preset mode; When the pipeline state is the leakage state, the emergency mode of the air-conditioning system is determined according to the refrigerant pressure, and the air-conditioning system is controlled to execute the emergency mode, wherein the emergency mode at least includes a power-off mode and a refrigerant discharge mode.

2. The control method of the air conditioning system according to claim 1, wherein: The determining the pipeline state of the refrigerant pipeline according to the refrigerant pressure and the saturated refrigerant pressure includes: When the refrigerant pressure is greater than or equal to the saturated refrigerant pressure, the pipeline state is the sealed state; When the refrigerant pressure is less than the saturated refrigerant pressure, the pipeline state is the leakage state.

3. The control method of the air conditioning system according to claim 2, wherein: Determining the emergency mode of the air conditioning system according to the refrigerant pressure includes: When the refrigerant pressure is less than the saturated refrigerant pressure and greater than the minimum refrigerant operating pressure, the emergency mode is the refrigerant discharge mode; When the refrigerant pressure is less than or equal to the minimum refrigerant operating pressure, the emergency mode is the power-off mode.

4. The control method of the air conditioning system according to claim 2, wherein: When the emergency mode is a refrigerant discharge mode, controlling the air conditioning system to execute the emergency mode includes: Control the fan to run until the preset conditions are met. Wherein, the preset conditions include: the running time of the fan is greater than or equal to the preset time, or the refrigerant concentration in the lower containing chamber is less than or equal to the preset safety concentration.

5. The control method of the air conditioning system according to claim 4, wherein: When the emergency mode is a refrigerant discharge mode, controlling the air conditioning system to execute the emergency mode further includes: The control display panel issues a prompt message, wherein the prompt message at least includes maintenance prompt information.

6. The control method of the air conditioning system according to any one of claims 1 to 5, further comprising: Acquire the real-time temperature in the sealed box, and determine the temperature state of the air conditioning system according to the real-time temperature and a predetermined temperature load relationship, wherein the temperature state includes a normal state and an over-temperature state; When the temperature state is the over-temperature state, reducing the operating load of the air conditioning system to a target load, wherein a ratio between the target load and the operating load is less than 1; When the temperature state is the normal state, the air conditioning system is controlled to operate according to a preset mode.

7. The control method of the air conditioning system according to claim 6, wherein: When the temperature state is the over-temperature state, the method further includes: The heat dissipation air duct is controlled to be open, and the heat dissipation gear of the fan is determined according to the real-time temperature and the predetermined heat dissipation gear relationship, and the fan is controlled to operate at the heat dissipation gear.

8. The control method of the air conditioning system according to claim 6, wherein: After reducing the operating load of the air conditioning system to the target load, the method further includes: When the operating load is less than or equal to a preset load, the air conditioning system is controlled to shut down.

9. A control device for an air conditioning system, comprising: an acquisition module, used to acquire an ambient temperature and a refrigerant pressure in a refrigerant pipeline, determine a saturated refrigerant pressure in the refrigerant pipeline according to the ambient temperature and a predetermined saturated pressure relationship, and determine a pipeline state of the refrigerant pipeline according to the refrigerant pressure and the saturated refrigerant pressure, wherein the pipeline state includes a sealing state and a leakage state; A control module is used to control the air-conditioning system to operate in a preset mode when the pipeline state is the sealing state; and when the pipeline state is the leakage state, determine the emergency mode of the air-conditioning system according to the refrigerant pressure, and control the air-conditioning system to execute the emergency mode, wherein the emergency mode includes at least a power-off mode and a refrigerant discharge mode.

10. An air conditioning system, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the steps of the control method of the air conditioning system according to any one of claims 1 to 8 are implemented.

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