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

Abstract

The invention relates to the technical field of air conditioning systems, and provides a control method and device of an air conditioning system and the air conditioning system.The control method of the air conditioning system comprises the steps that the environment temperature and the refrigerant pressure in a refrigerant pipeline are obtained, and the saturated refrigerant pressure in the refrigerant pipeline is determined according to the environment temperature and the preset saturated pressure relation; the pipeline state of the refrigerant pipeline is determined according to the refrigerant pressure and the saturated refrigerant pressure; wherein the pipeline state comprises a sealing state and a leakage state; when the pipeline state is the sealed state, the air conditioning system is controlled to operate according to a preset mode; when the pipeline state is the leakage state, an 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 comprises a power-off mode and a refrigerant discharge mode. When the refrigerant pipeline is in the leakage state, the air conditioning system is controlled to execute the emergency mode, the situation that an electric control assembly of the air conditioning system ignites leaked refrigerants can be avoided, and the safety of the air conditioning system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning systems, and in particular to a control method and a control device of an air conditioning system and an air conditioning system. Background Art

[0002] Air conditioning systems are mostly installed in closed indoor environments to adjust the ambient temperature through the air conditioning system, thereby improving the comfort of personnel. The air conditioning system includes electronic control components and refrigerant pipelines. There is environmentally friendly refrigerant circulating in the refrigerant pipelines. However, most environmentally friendly refrigerants are flammable, and there may be a risk of circuit ignition when the electronic control components are started. When the flammable refrigerant leaks, it is very easy to cause combustion or explosion when the circuit of the electronic control components ignites, which will cause serious harm. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention proposes a control method for an air-conditioning system, when the refrigerant pipeline of the air-conditioning system is in a leaking 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, thereby improving the safety of the air-conditioning system and avoiding harmful consequences.

[0004] The invention also provides a control device for an air conditioning system.

[0005] The invention also provides an air conditioning system.

[0006] According to a first aspect of the present invention, a method for controlling an air conditioning system is provided, comprising:

[0007] Acquiring 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 sealing state and a leakage state;

[0008] When the pipeline state is the sealed state, controlling the air conditioning system to operate according to a preset mode;

[0009] 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.

[0010] According to an embodiment of the present invention, the step of determining the pipeline state of the refrigerant pipeline according to the refrigerant pressure and the saturated refrigerant pressure specifically includes:

[0011] When the refrigerant pressure is greater than or equal to the saturated refrigerant pressure, the pipeline state is the sealed state;

[0012] When the refrigerant pressure is less than the saturated refrigerant pressure, the pipeline state is the leakage state.

[0013] According to an embodiment of the present invention, the step of determining the emergency mode of the air-conditioning system according to the refrigerant pressure specifically includes:

[0014] 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;

[0015] When the refrigerant pressure is less than or equal to the minimum refrigerant operating pressure, the emergency mode is the power-off mode.

[0016] According to one embodiment of the present invention, when the emergency mode is the refrigerant discharge mode, the step of controlling the air conditioning system to execute the emergency mode specifically includes:

[0017] Control the fan to run until the preset conditions are met;

[0018] 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.

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

[0020] The control display panel issues a prompt message; wherein the prompt message at least includes maintenance prompt information.

[0021] According to one embodiment of the present invention, the control method further includes:

[0022] 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;

[0023] 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;

[0024] When the temperature state is the normal state, the air conditioning system is controlled to operate according to a preset mode.

[0025] According to an embodiment of the present invention, when the temperature state is the over-temperature state, the control method further includes:

[0026] 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.

[0027] According to one embodiment of the present invention, the step of reducing the operating load of the air conditioning system to the target load further includes:

[0028] When the operating load is less than or equal to a preset load, the air conditioning system is controlled to shut down.

[0029] According to a second aspect of the present invention, a control device for an air conditioning system is provided, comprising:

[0030] an acquisition module, used to acquire the ambient temperature and the refrigerant pressure in the refrigerant pipeline, determine the saturated refrigerant pressure in the refrigerant pipeline according to the ambient temperature and the predetermined saturated pressure relationship, and determine the 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;

[0031] A control module, used for controlling the air-conditioning system to operate in a preset mode when the pipeline state is the sealing state; and for determining the emergency mode of the air-conditioning system according to the refrigerant pressure when the pipeline state is the leakage state, 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.

[0032] An air-conditioning system provided according to an embodiment of the third aspect of the present invention comprises 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 air-conditioning system control method provided according to the embodiment of the first aspect of the present invention are implemented.

[0033] The above one or more technical solutions in the present invention have at least one of the following technical effects:

[0034] According to an embodiment of the present invention, the control method of the air-conditioning system 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, the air-conditioning system is controlled to operate according to a preset mode; when the pipeline state is a leaking 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. During the operation of the air-conditioning system, when the refrigerant pipeline of the air-conditioning system is in a leaking 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, thereby improving the safety of the air-conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 One of the flow charts of the control method of the air conditioning system provided by the embodiment of the present invention;

[0037] Figure 2 A second flowchart of the control method of the air conditioning system provided by an embodiment of the present invention;

[0038] Figure 3 A schematic structural diagram of an air conditioning system provided by an embodiment of the present invention;

[0039] Figure 4 A schematic structural diagram of a control device for an air conditioning system provided by an embodiment of the present invention;

[0040] Figure 5 A schematic structural diagram of an electronic device of an air conditioning system provided in an embodiment of the present invention.

[0041] Reference numerals:

[0042] 300, sealed box; 301, upper accommodating chamber; 302, lower accommodating chamber; 303, first heat dissipation through hole; 304, second heat dissipation through hole; 305, air inlet and outlet; 306, refrigerant through hole;

[0043] 401, acquisition module; 402, control module. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the invention clearer, the technical solution in the invention will be clearly described below in conjunction with the drawings in the invention. Obviously, the described embodiments are part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0045] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0046] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0047] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the 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. The first feature being "below", "below" and "below" the 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.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 embodiment of the present invention. 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0049] In the related art, there is an environmentally friendly refrigerant circulating in the refrigerant pipeline. However, most environmentally friendly refrigerants are flammable, and there may be a risk of circuit ignition when the electronic control component is started. When the flammable refrigerant leaks, it is very easy to cause combustion or explosion when the circuit of the electronic control component ignites, which will cause serious harm.

[0050] The air conditioning system of the present invention comprises a sealed box 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 electric control components, and the lower accommodating chamber 302 is used to place the fan and the refrigerant pipeline. Figure 3 , the embodiment of the present invention provides a schematic diagram of a sealed box 300, a first heat dissipation through hole 303 is provided at a position of the sealed box 300 corresponding to the upper accommodating chamber 301, a second heat dissipation through hole 304 is provided on the partition, an electric control component is 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 electric control component. The second heat dissipation through hole 304 is connected to the upper accommodating chamber 301 and the lower accommodating chamber 302, and a fan is provided on one side of the lower accommodating chamber 302, for example Figure 1 In the left side of the lower accommodating chamber 302, the refrigerant pipeline is arranged on the right side of the lower accommodating chamber 302. The sealed box body 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 body 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 body 300 is provided with an exhaust port (not shown in the figure) at the position corresponding to the exhaust side of the fan, and the exhaust port is located directly in front of the fan.

[0051] In the air conditioning system provided by the embodiment of the present invention, the sealed box body 300 adopts a heat dissipating metal box body, and the heat generated by the electric control component during operation can be naturally released along the first heat dissipating through hole 303 and the box body, or actively dissipated along the heat dissipating air duct formed by the first heat dissipating through hole 303, the upper accommodating cavity 301, the second heat dissipating through hole 304, the lower accommodating cavity 302, and the exhaust port directly in front of the fan. The refrigerant leaking from the refrigerant pipeline can flow out naturally along the refrigerant through hole 306 under the action of gravity, or it can be actively discharged along the refrigerant through hole 306 and the refrigerant air duct formed by the exhaust port directly in front of the fan.

[0052] 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 chamber 301 from the lower accommodating chamber 302 .

[0053] The control method of the air conditioning system provided in the first embodiment of the present invention is at least applied to the above-mentioned air conditioning system. Figure 1 ,include:

[0054] Obtain the ambient temperature and the refrigerant pressure in the refrigerant pipeline, determine the saturated refrigerant pressure in the refrigerant pipeline according to the ambient temperature and the predetermined saturated pressure relationship, and determine the 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.

[0055] 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 state 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.

[0056] When the pipeline is in a sealed state, the air conditioning system is controlled to operate according to the preset mode.

[0057] 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.

[0058] 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 at least includes a power-off mode and a refrigerant discharge mode.

[0059] 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.

[0060] See also Figure 1 The control method of the air conditioning system provided by the embodiment of the present invention includes the following process:

[0061] S100: Obtain the ambient temperature and the refrigerant pressure in the refrigerant pipeline.

[0062] S110: Determine the saturated refrigerant pressure in the refrigerant pipeline according to the ambient temperature and a predetermined saturated pressure relationship.

[0063] S120: Determine the pipeline state of the refrigerant pipeline according to the refrigerant pressure and the saturated refrigerant pressure.

[0064] S130: Determine whether the pipeline state is a leakage state.

[0065] If yes, execute step S140; if no, execute step S150.

[0066] 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.

[0067] S150: Control the air conditioning system to operate according to a preset mode.

[0068] 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, thereby improving the safety of the air-conditioning system and avoiding harmful consequences.

[0069] It should be noted that, in other air-conditioning systems, if the refrigerant pipeline and the electronic control component 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 invention may also be executed.

[0070] In some embodiments, the step of determining the pipeline state of the refrigerant pipeline according to the refrigerant pressure and the saturated refrigerant pressure specifically includes:

[0071] S121. When the refrigerant pressure is greater than or equal to the saturated refrigerant pressure, the pipeline state is a sealed state.

[0072] S122. When the refrigerant pressure is less than the saturated refrigerant pressure, the pipeline state is a leakage state.

[0073] In step S121 to step S122, the real-time refrigerant pressure in the refrigerant pipeline and the calculated saturated refrigerant pressure can determine the pipeline status of the refrigerant pipeline. For example, when 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 part of the refrigerant in the refrigerant pipeline has flowed out, causing the refrigerant pressure to fail to reach the saturated refrigerant pressure.

[0074] In some embodiments, the step of determining the emergency mode of the air conditioning system according to the refrigerant pressure specifically includes:

[0075] 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.

[0076] In step S141, if the refrigerant pressure in the refrigerant pipeline is between the saturated refrigerant pressure and the minimum refrigerant operating pressure, there is a small amount of refrigerant leakage in the air-conditioning system, 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 use functions. When operating in the refrigerant discharge mode, a small amount of refrigerant leaked from the lower accommodating chamber is quickly discharged from the outside of the sealed box, and will not cause danger to the electronic control components.

[0077] S142. When the refrigerant pressure is less than or equal to the minimum refrigerant operating pressure, the emergency mode is the power-off mode.

[0078] 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.

[0079] 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:

[0080] S1411. Control the fan to run until a preset condition is met; wherein the preset condition includes: 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.

[0081] It is understandable that when the emergency mode of refrigerant discharge is adopted, the refrigerant and air in the lower accommodating chamber are discharged through the fan along the exhaust port in front of the fan, and the refrigerant through hole provides the function of balancing the air pressure, and can bring all the refrigerant at the bottom of the lower accommodating chamber to the fan and discharge it through the exhaust port. In order to achieve complete discharge of the refrigerant, the fan needs to run for at least a preset time or until the refrigerant concentration is less than or equal to a preset safety concentration.

[0082] 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:

[0083] The control display panel issues a prompt message, wherein the prompt message at least includes maintenance prompt information.

[0084] It is understandable that when the air-conditioning system executes the refrigerant discharge mode, the air-conditioning system is not shut down, but can maintain a normal operating state. 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.

[0085] In some embodiments, the control method of the air conditioning system further includes:

[0086] 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.

[0087] When the temperature state is an over-temperature state, the operating load of the air-conditioning system is reduced to a target load; wherein a ratio between the target load and the operating load is less than 1.

[0088] When the temperature is in a normal state, the air conditioning system is controlled to operate according to a preset mode.

[0089] 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 invention solves the danger 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 in 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, the compressor or the fan, which helps to reduce the temperature in the sealed box, thereby ensuring the stable operation of the air-conditioning system.

[0090] See also Figure 2 The control method of the air conditioning system provided by the embodiment of the present invention includes the following process:

[0091] S200: Obtain the real-time temperature inside the sealed box.

[0092] S210: Determine the temperature state of the air conditioning system according to the real-time temperature and a predetermined temperature load relationship.

[0093] S220: Determine whether the temperature state is an over-temperature state.

[0094] If yes, execute step S230; if no, execute step S240.

[0095] S230: Reduce the operating load of the air conditioning system to a target load.

[0096] S240: Control the air conditioning system to operate according to a preset mode.

[0097] 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.

[0098] In some embodiments, when the temperature state is an over-temperature state, the control method of the air conditioning system further includes:

[0099] 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.

[0100] In step S231, when the sealed box is in an over-temperature state, the heat dissipation duct can be actively controlled to be open, for example, the valve at the second heat dissipation through hole is opened, so that the first heat dissipation through hole, the second heat dissipation through hole, and the exhaust port form a heat dissipation duct, and then the sealed box is actively cooled by the fan, thereby improving the cooling efficiency. Secondly, the heat dissipation gear of the fan can be determined according to the real-time temperature and the predetermined heat dissipation gear relationship. When the real-time temperature is high, the heat can be dissipated through 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.

[0101] In some embodiments, the step of reducing the operating load of the air conditioning system to the target load further includes:

[0102] When the operating load is less than or equal to the preset load, the air conditioning system is controlled to shut down.

[0103] It is understandable that the air conditioning system adopts a periodic adjustment strategy when performing temperature control, for example, obtaining the real-time temperature every 1 minute. If the real-time temperature inside the sealed box is high, the operating load is reduced every 1 minute until the heat dissipation capacity of the sealed box is greater than its heating capacity. In some cases, as the operating load of the air conditioning system gradually decreases, for example, the operating load is reduced to less than or equal to the preset load, the real-time temperature inside the sealed box does not decrease, so it is necessary to control the air conditioning system to shut down and check the cause of the fault in time to avoid damage to electronic components.

[0104] According to the second aspect of the present invention, the control device of the air conditioning system is provided. Figure 4 ,include:

[0105] 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 according to the ambient temperature and the predetermined saturated pressure relationship, and determine the 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.

[0106] 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 leaking 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.

[0107] 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 first aspect embodiment, 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 second aspect embodiment, and in order to avoid repetition, the control device of the air-conditioning system provided in the second aspect embodiment 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 control device of the air-conditioning system provided according to the embodiment of the present invention has the technical effects corresponding to the technical effects of the above-mentioned control method of the air-conditioning system, which will not be repeated here.

[0108] An air-conditioning system provided according to an embodiment of the third aspect of the present invention comprises 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 air-conditioning system control method provided according to the embodiment of the first aspect of the present invention are implemented.

[0109] Figure 5 The physical structure diagram of an electronic device of an air conditioning system is illustrated, and the electronic device may include: a processor 810, a communication interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 complete mutual communication through the communication bus 840. The processor 810 may call the logic instructions in the memory 830 to execute a control method of the air conditioning system, the method comprising: 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 sealing state and a leakage state; when the pipeline state is a sealing state, the air conditioning system is controlled to operate according to a preset mode; and 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 at least includes a power-off mode and a refrigerant discharge mode.

[0110] 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 it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, 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, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0111] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0112] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for 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 some parts of the embodiments.

[0113] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for an air conditioning system, characterized in that: include: Acquiring 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 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 includes at least a power-off mode and a refrigerant discharge mode.

2. The control method of the air conditioning system according to claim 1, characterized in that: The step of determining the pipeline state of the refrigerant pipeline according to the refrigerant pressure and the saturated refrigerant pressure specifically 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, characterized in that: The step of determining the emergency mode of the air conditioning system according to the refrigerant pressure specifically 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, characterized in that: When the emergency mode is the refrigerant discharge mode, the step of controlling the air conditioning system to execute the emergency mode specifically 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, characterized in that: When the emergency mode is the refrigerant discharge mode, the step of 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, characterized in that: The control method further comprises: 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 the 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, characterized in that: When the temperature state is the over-temperature state, the control 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, characterized in that: The step of reducing the operating load of the air conditioning system to the target load further comprises: 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, characterized in that: include: an acquisition module, used to acquire the ambient temperature and the refrigerant pressure in the refrigerant pipeline, determine the saturated refrigerant pressure in the refrigerant pipeline according to the ambient temperature and the predetermined saturated pressure relationship, and determine the 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, used for controlling the air-conditioning system to operate in a preset mode when the pipeline state is the sealing state; and for determining the emergency mode of the air-conditioning system according to the refrigerant pressure when the pipeline state is the leakage state, 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.

10. An air conditioning system, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: 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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