A method, device, system and all-in-one air conditioner for controlling an all-in-one air conditioner

Abstract

The application discloses a whole air conditioner control method, device, system and whole air conditioner, and belongs to the whole air conditioner field. When a preset condition is triggered, a refrigerant leakage detection device is started to obtain target parameters; the target parameters include an evaporator inlet and outlet temperature difference, an evaporator outlet temperature and suction temperature temperature difference, a condenser outlet temperature and exhaust temperature temperature difference, and an outlet air temperature and room inside temperature temperature difference; when any target parameter continuously exists for less than or equal to a first preset time length and a corresponding preset temperature difference, the air conditioner refrigerant leakage is determined, and the air conditioner is controlled to stop. Because the refrigerant circulates in the refrigerant circulation loop, once the refrigerant leaks, the refrigerant participating in heat exchange becomes less, the temperature difference between both ends of components such as the evaporator and the condenser becomes smaller, and even if the refrigerant just starts to leak, the temperature difference at the leakage position will decrease, so that whether the refrigerant leaks can be quickly determined according to the target parameters, and the air conditioner can be timely stopped.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of whole air conditioners, in particular, relates to a whole air conditioner control method, device, system and whole air conditioner. BACKGROUND

[0002] An air conditioner is a device for adjusting indoor temperature by heat exchange. Refrigerant plays a very important role as a medium for exchanging heat. The change of refrigerant quantity has a great influence on the performance of the air conditioner. Therefore, a good air conditioner must have a certain amount of refrigerant to play the greatest role. With the operation of the whole machine, the whole system will produce temperature rise and fall and pressure rise and fall. The amount of refrigerant will greatly affect these parameters. When refrigerant leaks, the temperature or pressure of the whole device is very high, and the risk of damage to the air conditioner components increases. In addition, refrigerant leakage may cause fire or explosion under certain environmental conditions, resulting in property or human loss. Therefore, it is very important to ensure the stability of the air conditioning system and avoid refrigerant leakage to maintain the safety of the air conditioner operation.

[0003] The existing whole air conditioner has a compressor, an evaporator, a condenser and other main components integrated in one box. There are many pipe welds in the whole cavity. Window air conditioners need to be fixed on the window for use. When the air conditioning unit is running, the vibration of the whole shell will be large. If it is not installed properly, it is easy to cause resonance. If the welding is poor, it is easy to cause a large gap, which may cause refrigerant leakage. This is easy to be found, but if it is a small gap, the user usually cannot detect the refrigerant leakage. The refrigerant leaks slowly over a long period of time, which makes the refrigeration effect of the air conditioning system worse. When a lot of refrigerant leaks, it may cause the compressor to be burned out. When the air conditioner operates under high temperature conditions, if the refrigerant leaks, the compressor discharge temperature will rise quickly. If the air conditioner cannot stop running in time and report a fault, it will have a great safety hazard. Therefore, it is necessary to detect refrigerant leakage in time.

[0004] The existing whole air conditioner is prone to refrigerant leakage due to various human errors, machine resonance or pipe welding problems. The traditional control method for detecting gas leakage is not timely, and cannot feedback the refrigerant state of the whole machine in the first time and notify the user in time. SUMMARY

[0005] In order to overcome the shortcomings of the prior art, the present application provides a whole air conditioner control method, device, system and whole air conditioner to solve the problem that the traditional control method for detecting gas leakage is not timely and cannot feedback the refrigerant state of the whole machine in the first time and notify the user in time.

[0006] The technical scheme adopted by the present application to solve its technical problems is:

[0007] In a first aspect, a method for controlling a whole air conditioner is provided, comprising:

[0008] When a preset condition is triggered, a refrigerant leakage detection device is started to obtain target parameters; the target parameters include a temperature difference between an inlet and an outlet of an evaporator, a temperature difference between an outlet temperature of the evaporator and a suction temperature, a temperature difference between an outlet temperature of a condenser and a discharge temperature, and a temperature difference between an outlet temperature and a room temperature;

[0009] When any of the target parameters is less than or equal to a corresponding preset temperature difference for a first preset time length, it is determined that the air conditioner has a refrigerant leakage, and the air conditioner is controlled to stop.

[0010] Further, the method further comprises:

[0011] An operating frequency of the air conditioner after the air conditioner is operated for a second preset time length is obtained;

[0012] When the operating frequency is not within a preset operating frequency range, the preset condition is triggered.

[0013] Further, the method further comprises:

[0014] When it is determined that the air conditioner has a refrigerant leakage, a refrigerant leakage position is determined according to the target parameters;

[0015] The refrigerant leakage position determined according to the target parameters comprises:

[0016] When only the temperature difference between the inlet and the outlet of the evaporator is less than or equal to a corresponding first preset temperature difference value, it is determined that the evaporator has a leakage;

[0017] And / or, when only the temperature difference between the outlet temperature of the evaporator and the suction temperature is less than or equal to a corresponding second preset temperature difference value, it is determined that an indoor-outdoor connecting air pipe has a leakage;

[0018] And / or, when only the temperature difference between the outlet temperature of the condenser and the discharge temperature is less than or equal to a corresponding third preset temperature difference value, it is determined that the condenser has a leakage.

[0019] Further, the method further comprises:

[0020] When any of the target parameters is not less than or equal to a corresponding preset temperature difference for a first preset time length, a condensate water level of a chassis is obtained;

[0021] The air conditioner is controlled based on the condensate water level of the chassis.

[0022] Further, the air conditioner is controlled based on the condensate water level of the chassis, comprising:

[0023] When the bottom condensate water level is less than or equal to a first preset bottom condensate water level, the water spraying cavity water level is acquired;

[0024] The water spraying system is controlled based on the water spraying cavity water level.

[0025] Further, the water spraying system is controlled based on the water spraying cavity water level, including:

[0026] When the water spraying cavity water level is less than or equal to a first preset water spraying cavity water level, the water spraying system is controlled not to be started, and a first preset form of alarm is sent to inform the user to add water.

[0027] Further, the water spraying system is controlled based on the water spraying cavity water level, including:

[0028] When the water spraying cavity water level is greater than the first preset water spraying cavity water level and less than a second preset water spraying cavity water level, the water spraying system is controlled to be started, and a second preset form of alarm is sent to inform the user that the water is less.

[0029] Further, the water spraying system is controlled based on the water spraying cavity water level, including:

[0030] When the water spraying cavity water level is greater than the second preset water spraying cavity water level, the water spraying system is controlled to be started.

[0031] Further, the air conditioner is controlled based on the bottom condensate water level, including:

[0032] When the bottom condensate water level is greater than a first preset bottom condensate water level and less than a second preset bottom condensate water level, the current state is maintained unchanged.

[0033] Further, the air conditioner is controlled based on the bottom condensate water level, including:

[0034] When the bottom condensate water level is greater than the second preset bottom condensate water level, a third preset form of alarm is sent to inform the user not to add water.

[0035] In a second aspect, a whole air conditioner control device is provided, including:

[0036] A refrigerant detection starting module is configured to start a refrigerant leakage detection device to acquire a target parameter when a preset condition is triggered; the target parameter includes an evaporator inlet and outlet temperature difference, an evaporator outlet temperature and suction temperature temperature difference, a condenser outlet temperature and exhaust temperature temperature difference, and an outlet air temperature and room inner side temperature temperature difference.

[0037] The air conditioner stop control module is used for determining that the air conditioner refrigerant leaks when any target parameter exists for less than or equal to a corresponding preset temperature difference for a first preset time length, and controlling the air conditioner to stop.

[0038] In a third aspect, a whole air conditioner control system is provided, comprising:

[0039] at least one processor and at least one memory;

[0040] The memory stores executable instructions of the processor;

[0041] The processor is configured to execute the above method.

[0042] In a fourth aspect, a whole air conditioner is provided, which applies the above method.

[0043] Advantages:

[0044] The technical scheme of the present application provides a whole air conditioner control method, device, system and whole air conditioner. When a preset condition is triggered, a refrigerant leakage detection device is started to obtain a target parameter. The target parameter includes an evaporator inlet and outlet temperature difference, an evaporator outlet temperature and suction temperature temperature difference, a condenser outlet temperature and exhaust temperature temperature difference, and an outlet air temperature and room inside temperature temperature difference. When any target parameter exists for less than or equal to a corresponding preset temperature difference for a first preset time length, it is determined that the air conditioner refrigerant leaks, and the air conditioner is controlled to stop. Because the refrigerant circulates in the refrigerant circulation loop, once it leaks, the amount of refrigerant participating in heat exchange decreases. Due to the decrease in the amount of refrigerant, the heat exchange state of the whole machine is not optimal, and the lack of supercooling or overheating leads to poor heat exchange, and the temperature difference between the evaporator and the condenser and other components will decrease. Even if it leaks at the beginning, the temperature difference at the leakage location will decrease. In this way, the target parameter can be used to quickly determine whether the refrigerant leaks and stop in time. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0046] Figure 1 is a whole air conditioner control method flowchart provided by the embodiment of the present application;

[0047] Figure 2 is a specific whole air conditioner refrigerant leakage detection method flowchart provided by the embodiment of the present application;

[0048] Figure 3 is a specific overall air conditioner water level control method flowchart provided by the embodiment of the present application;

[0049] Figure 4 is a specific overall air conditioner structure section view schematic diagram provided by the embodiment of the present application;

[0050] Figure 5 is a specific overall air conditioner water spraying assembly structure section view schematic diagram provided by the embodiment of the present application;

[0051] Figure 6 is a specific overall air conditioner control device structure schematic diagram provided by the embodiment of the present application;

[0052] Figure 7 is a specific overall air conditioner control device system schematic diagram provided by the embodiment of the present application. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described in detail below in combination with the drawings and embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of the present application.

[0054] The existing overall air conditioner has various components of the device installed inside a housing, i.e. the evaporator, heat exchanger and compressor are all in a housing. When the user suspects that there may be refrigerant leakage, the machine is disassembled for inspection and measurement, which increases the process and consumes energy.

[0055] The prior art refrigerant leakage detection scheme is: detecting the current outdoor environment temperature of the outdoor unit of the air conditioning system; detecting the first refrigerant pressure value, comparing the first refrigerant pressure value with the preset refrigerant pressure value to obtain a first comparison result, and judging whether the air conditioning system has refrigerant leakage according to the first comparison result. This patent method can ensure that the pressure around the air conditioning unit is relatively stable, and by comparing the pressure value with the preset pressure value, it can to some extent realize the judgment of refrigerant leakage. However, this method is based on a single parameter, the detection control method is simple, the pressure value in a certain space is difficult to have a large difference, and the detection is easy to be misjudged due to the fluctuation of the surrounding air pressure value, and it cannot be directly judged according to the fundamental parameters of the air conditioner, so the applicability is low.

[0056] Alternatively, the current refrigerant status can be determined by obtaining the indoor refrigerant concentration and using the relationship between the refrigerant concentration and a pre-determined refrigerant leakage threshold. During air conditioning operation, the indoor refrigerant concentration is detected by a refrigerant concentration sensor. If a refrigerant leak is detected, the air conditioner is controlled to recover refrigerant from the refrigerant circulation loop. This solution can recover leaked refrigerant, to a certain extent preventing further refrigerant leakage from posing a hazard to indoor occupants and potentially posing a fire hazard. However, refrigerant recovery is not straightforward and involves a complex process. Furthermore, to achieve optimal results, accurate detection of relevant system parameters and precise location of the refrigerant leak are required for recovery. Furthermore, this device does not provide appropriate detection for the stage of refrigerant leakage. When the refrigerant leaks completely, the user may perceive poor cooling performance and conclude that the refrigerant has completely leaked. However, using the device to detect refrigerant at this point in time will not effectively recover the refrigerant. Furthermore, this method's judgment and detection methods are similarly single-minded and inaccurate, making it ineffective in detecting refrigerant leaks.

[0057] To solve this problem, refer to Figure 1 , an embodiment of the present application provides an integrated air conditioning control method, comprising:

[0058] S11: When a preset condition is triggered, the refrigerant leakage detection device is turned on to obtain target parameters; the target parameters include the evaporator inlet and outlet temperature difference, the temperature difference between the evaporator outlet temperature and the suction temperature, the temperature difference between the condenser outlet temperature and the exhaust temperature, and the temperature difference between the outlet air temperature and the room inner temperature;

[0059] In one embodiment, the preset trigger condition is receiving a refrigerant leakage detection device start instruction input by the user through a remote controller or a remote control device (such as a mobile phone APP, a computer control platform).

[0060] In another embodiment, the preset triggering condition is based on whether the air conditioner is in a stable operating state, where a stable operating state means that the air conditioner can maintain a preset operating frequency for a specified period of time when the ambient temperature and the set temperature remain unchanged. Therefore, the operating frequency of the air conditioner after it is turned on and running for a second preset period of time is obtained; when the operating frequency is not within the preset operating frequency range, the preset condition is triggered. The second preset period of time is the frequency increase phase after the air conditioner is turned on. During this period, the air conditioner frequency is unstable, so it is necessary to obtain the operating frequency after the second preset period of time.

[0061] S12: When any target parameter is less than or equal to the corresponding preset temperature difference for a first preset time period, it is determined that the air conditioner refrigerant is leaking, and the air conditioner is controlled to shut down.

[0062] After the air conditioner refrigerant leaks, the temperature difference between the evaporator and the condenser and other components will decrease, so the refrigerant participating in the refrigeration cycle becomes less, and the temperature change value becomes smaller. When the air conditioner refrigerant is normal, the temperature difference is greater than the corresponding preset temperature difference. The reason for detecting multiple target parameters in the application is that the refrigerant leakage speed is slow in some cases, and if the refrigerant is not leaked at that place, it will take a long time to determine the refrigerant leakage. Therefore, detecting multiple target parameters, once a leak occurs, the temperature difference at that place will change immediately, which can ensure timely control.

[0063] On the other hand, the refrigerant leakage position can also be determined according to multiple target parameters. When the air conditioner refrigerant is determined to leak, the refrigerant leakage position is determined according to the target parameters;

[0064] The refrigerant leakage position determined according to the target parameters comprises:

[0065] When only the temperature difference between the evaporator inlet and outlet is less than or equal to the corresponding first preset temperature difference value, it is determined that the evaporator leaks;

[0066] And / or, when only the temperature difference between the evaporator outlet temperature and the suction temperature is less than or equal to the corresponding second preset temperature difference value, it is determined that the indoor and outdoor connecting air pipe leaks.

[0067] And / or, when only the temperature difference between the condenser outlet temperature and the exhaust temperature is less than or equal to the corresponding third preset temperature difference value, it is determined that the condenser leaks.

[0068] After determining the refrigerant leakage and the leakage position, a preset form of alarm can be sent, or a specified code can be displayed to indicate the refrigerant leakage and the leakage position. The preset form of alarm can use one or more of a buzzer, a light, and a display screen, and the embodiments of the application are not limited.

[0069] The existing whole air conditioner may have reduced refrigeration capacity and weakened heat exchange capacity when all parameters of the air conditioner are normal. At this time, impurities and blockages may appear on the surface of the two devices or even the entire chassis, so only using the condensate water generated by the evaporator to achieve the water beating effect on the outdoor heat exchanger through the water beating ring cannot achieve the self-cleaning function, and the condensate water generated by the air conditioner itself is limited, which cannot achieve obvious enhanced heat exchange effect.

[0070] As a preferred implementation manner of the embodiments of the application, when none of the target parameters is less than or equal to the corresponding preset temperature difference for a first preset time period, the condensate water level of the chassis is obtained; and the air conditioner is controlled based on the condensate water level of the chassis.

[0071] It can be understood that the condensate water at the condenser in the integrated air conditioner is used for cleaning, when the air conditioner is unstable (that is, the running frequency is no longer in the preset frequency range) and any target parameter does not exist for less than or equal to the corresponding preset temperature difference for the first preset duration, it may be due to the air conditioner being dirty and blocked, so the chassis condensate water level can be obtained when receiving the user's instruction to start the intensive cleaning.

[0072] The control of the air conditioner based on the chassis condensate water level comprises:

[0073] When the chassis condensate water level is less than or equal to the first preset chassis condensate water level, the water spraying cavity water level is obtained. The first preset chassis condensate water level represents the lowest water level at which the water sprayer can spray water. Therefore, at this time, the water level is too low to spray water, and the water spraying system needs to be started, and the water spraying cavity water level needs to be determined before the water spraying system is started. Whether to start the water spraying system is controlled based on the water spraying cavity water level. The user can add water through the water inlet provided in the water storage tank. The specific installation positions of various components are not limited in the present application, and can be referred to the detailed description of the present application Figure 4 .

[0074] When the chassis condensate water level is greater than the first preset chassis condensate water level and less than the second preset chassis condensate water level, the current state is maintained unchanged.

[0075] When the chassis condensate water level is greater than the second preset chassis condensate water level, a third preset form of alarm is sent to inform the user not to add water. At this time, adding water will cause water to overflow, resulting in air conditioner water leakage, so an alarm needs to be sent.

[0076] As a preferred implementation manner of the present application, whether to start the water spraying system is controlled based on the water spraying cavity water level, comprising:

[0077] When the water spraying cavity water level is less than or equal to the first preset water spraying cavity water level, the water spraying system is controlled not to start, and a first preset form of alarm is sent to inform the user to add water.

[0078] When the water spraying cavity water level is greater than the first preset water spraying cavity water level and less than the second preset water spraying cavity water level, the water spraying system is controlled to start, and a second preset form of alarm is sent to inform the user that the water is low.

[0079] When the water spraying cavity water level is greater than the second preset water spraying cavity water level, the water spraying system is controlled to start.

[0080] The prior art mostly only provides a traditional single refrigerant detection control method, which can detect the state of the refrigerant to a certain extent, but when a misjudgment occurs, it will cause the user to have a very bad experience, and there is no operation for the user to choose. Moreover, compared with detecting the pressure value, detecting the temperature is easier to control, and the detection result is more stable and reliable. The device proposed in the patent can effectively realize the detection and judgment of refrigerant leakage, including temperature detection between each pipeline component, realizing the stability of the whole unit, providing more reliable judgment when refrigerant leaks, and feeding back to the user in time. At the same time, according to the detection result, when it is judged that the refrigerant has not leaked, a self-selected enhanced heat exchange and cleaning function system is provided for the user, effectively realizing the monitoring of refrigerant leakage, and selectively enhancing the primary performance of the air conditioner: refrigeration capacity, meeting the user's refrigeration experience, and improving the stability of the air conditioner.

[0081] The main invention points are:

[0082] 1. A new design of an efficient and timely refrigerant leakage detection control method realizes real-time monitoring and feedback of refrigerant leakage during air conditioner operation, improves air conditioner safety, and ensures long-term and healthy operation

[0083] 2. Provide a selectable water adding system device, according to the feedback of the air conditioner refrigerant leakage detection result, the user independently selects to start the water adding device to realize the enhanced heat exchange and cleaning, and improves the refrigeration capacity and cleanliness and stability of the air conditioner

[0084] 3. Increase the water level detection control feedback of the water storage tank, realize the application convenience and effective use of water resources of the enhanced heat exchanger.

[0085] As shown in Figure 2 When the user uses the air conditioner, the air conditioner is started, runs for a preset time t1, and then enters the next stage of stable running time. If the running is stable, the command is continued to be executed to ensure the normal running state of the whole machine and confirm that the whole machine has refrigerant. If the whole machine does not continue to run stably, the refrigerant leakage detection device is started, the real-time temperature value difference AT of each component at both ends arranged in the refrigerant flow path of the air conditioner is obtained, and the refrigerant leakage is judged by comparing with the preset deviation value. If the judgment result is yes, a stop protection instruction is issued to realize the stop protection of the air conditioner. If the judgment result is no, the whole machine continues to run, and the refrigerant leakage detection logic is recycled, and whether to issue an alarm is determined according to the water level H of the water spraying cavity detected by the detection device, reminding the user to add water, so as to ensure the persistent operation of the water spraying device.

[0086] Specifically, the temperature detection points are T1, T2, T3, T4, T5 and T6, and the temperature value T1, the temperature value T2, the temperature value T3, the temperature value T4, the temperature value T5 and the temperature value T6 are respectively connected in series at both ends of each component in the air conditioner refrigerant flow path, when the operating frequency of the air conditioner compressor is stable, and the stable time t2 is continued, the temperature value at this time is obtained, and the stable time t2 is 5 to 8 minutes. The running preset time t1 is 15 to 30 minutes. The temperature difference value is compared with the preset deviation value, when the temperature difference value is less than or equal to the preset deviation value, and the stable time is continued, it is determined that the refrigerant leaks; when the temperature difference value is greater than the preset deviation value ΔT, it is determined that the refrigerant does not leak, and the current mode is kept running. The shutdown protection instruction code XL1 indicates that the evaporator leaks; the instruction code XL2 indicates that the indoor and outdoor connecting gas pipe leaks; the instruction code XL3 indicates that the condenser leaks; and the instruction code XL4 indicates that the indoor connecting liquid pipe leaks.

[0087] Figure 4 and Figure 5 As shown in FIG. 1, the integrated air conditioner is divided into indoor and outdoor parts, the indoor side has an evaporator, an electrical box, an indoor air duct system, the outdoor side has a condenser, and an outdoor air duct system, wherein a water spraying cavity is arranged on the lower side of a rear cover plate and above a fan blade system device, a pressurizing pump connected to the water spraying cavity, the whole water adding device (the water spraying cavity and the water storage space of the bottom plate) uses a detection meter for detecting the water level, and the operation of the system controls the water adding according to the height of the water level. As shown in FIG. 2, after the system starts the water level detection, the bottom plate condensate water level h is detected, when h≥h2, the condensate water generated by the whole machine at this time has exceeded the optimal water level for the outdoor fan blade to spray water, and too much water cannot be added, at this time the buzzer 1 responds, and the green indicator light is on, which can inform the user that the water amount in the bottom plate space is sufficient and water does not need to be added; when h1 Figure 3

[0088] ​The embodiment of the present application provides a kind of air conditioner refrigerant leakage detection method, to solve the problem that current air conditioner cannot effectively detect the leakage of refrigerant, while also providing enhanced overall refrigeration effect and its cleaning heat exchanger to the user to avoid the choice of enhancing heat exchange due to the impurities of heat exchanger to block etc. by signal feedback and based on user experience.The detection mode replaces the mode of judging whether leakage exists by detecting pressure or the mode of manpower disassembly machine inspection, meets real-time monitoring effect, and ensures the stability of the state of the whole machine, greatly saves material and manpower, increases user experience.Based on effectively realizing the monitoring of refrigerant leakage, a selective heat exchange and cleaning function system is provided for users to effectively enhance the air conditioning refrigeration capacity, meet the user refrigeration experience, and improve the stability of air conditioner.

[0089] Based on the same inventive concept, as Figure 7 The present application also provides a whole air conditioner control device 60, which comprises:

[0090] Refrigerant detection opening module 61 is used to open refrigerant leakage detection device to obtain target parameter when triggering preset condition;The target parameter includes evaporator inlet and outlet temperature difference, evaporator outlet temperature and suction temperature temperature difference, condenser outlet temperature and exhaust temperature temperature difference and outlet air temperature and room inner side temperature temperature difference;

[0091] In one embodiment, the running frequency of the air conditioner after being started and running for a second preset time length is obtained;When the running frequency is not in the preset running frequency interval, the preset condition is triggered.

[0092] In another embodiment, when receiving that the user starts refrigerant detection device refrigeration, the preset condition is triggered.

[0093] Air conditioner stop control module 62 is used to determine that the air conditioner refrigerant leaks when any target parameter lasts for a first preset time length is less than or equal to the corresponding preset temperature difference, and control the air conditioner to stop.

[0094] In addition, when it is determined that the air conditioner refrigerant leaks, the refrigerant leakage position is determined according to the target parameter;

[0095] The refrigerant leakage position determined according to the target parameter comprises:

[0096] When only evaporator inlet and outlet temperature difference is less than or equal to the corresponding first preset temperature difference value, evaporator leakage is determined;

[0097] And / or, when only evaporator outlet temperature and suction temperature temperature difference is less than or equal to the corresponding second preset temperature difference value, indoor and outdoor connecting air pipe leakage is determined;

[0098] And / or, when only the temperature difference between the condenser outlet temperature and the exhaust gas temperature is less than or equal to the corresponding third preset temperature difference, it is determined that the condenser is leaking.

[0099] Also includes:

[0100] When any target parameter does not exist for a first preset duration less than or equal to the corresponding preset temperature difference, the chassis condensate water level is obtained;

[0101] The air conditioner is controlled based on the chassis condensate water level.

[0102] The air conditioner is controlled based on the chassis condensate water level, including:

[0103] When the chassis condensate water level is less than or equal to a first preset chassis condensate water level, the water spray cavity water level is obtained;

[0104] Based on the water spray cavity water level, it is controlled whether to start the water spray system.

[0105] When the chassis condensate water level is greater than the first preset chassis condensate water level and less than the second preset chassis condensate water level, the current state is maintained unchanged.

[0106] When the chassis condensate water level is greater than the second preset chassis condensate water level, a third preset form of alarm is issued to inform the user not to add water.

[0107] Further, based on the water spray cavity water level, it is controlled whether to start the water spray system, including:

[0108] When the water spray cavity water level is less than or equal to a first preset water spray cavity water level, the water spray system is controlled not to start, and a first preset form of alarm is issued to inform the user to add water.

[0109] When the water spray cavity water level is greater than the first preset water spray cavity water level and less than the second preset water spray cavity water level, the water spray system is controlled to start, and a second preset form of alarm is issued to inform the user that the water is less.

[0110] When the water spray cavity water level is greater than the second preset water spray cavity water level, the water spray system is controlled to start.

[0111] The overall air conditioner control device provided by the embodiments of the present application opens the refrigerant leakage detection device to obtain target parameters when a preset condition is triggered; the target parameters include an evaporator inlet and outlet temperature difference, an evaporator outlet temperature and suction temperature temperature difference, a condenser outlet temperature and exhaust temperature temperature difference, and an outlet air temperature and room inside temperature temperature difference; when any one of the target parameters continuously exists for a first preset time period and is less than or equal to a corresponding preset temperature difference, it is determined that the air conditioner refrigerant leaks, and the air conditioner is controlled to stop. Because the refrigerant circulates in the refrigerant circulation loop, once leakage occurs, the refrigerant participating in heat exchange becomes less; due to the decrease in the amount of refrigerant, the heat exchange state of the overall machine is not optimal, and the heat exchange becomes poor due to the lack of supercooling degree or superheating degree, and the temperature difference between the two ends of the evaporator and the condenser and other components will decrease; even if leakage just occurs, the temperature difference at the leakage position will decrease, so the target parameters can be used to quickly determine whether the refrigerant leaks and stop the machine in time.

[0112] Based on the same inventive concept, the present application also provides an overall air conditioner control system 70, as shown in Figure 7 The overall air conditioner control system 70 comprises:

[0113] at least one processor 71 and at least one memory 72;

[0114] The memory stores executable instructions of the processor;

[0115] The processor is configured to execute the overall air conditioner control method provided by the above embodiments.

[0116] The overall air conditioner control system provided by the embodiments of the present application stores executable instructions of the processor in the memory; when the executable instructions are executed, the processor can open the refrigerant leakage detection device to obtain target parameters when a preset condition is triggered; the target parameters include an evaporator inlet and outlet temperature difference, an evaporator outlet temperature and suction temperature temperature difference, a condenser outlet temperature and exhaust temperature temperature difference, and an outlet air temperature and room inside temperature temperature difference; when any one of the target parameters continuously exists for a first preset time period and is less than or equal to a corresponding preset temperature difference, it is determined that the air conditioner refrigerant leaks, and the air conditioner is controlled to stop. Because the refrigerant circulates in the refrigerant circulation loop, once leakage occurs, the refrigerant participating in heat exchange becomes less; due to the decrease in the amount of refrigerant, the heat exchange state of the overall machine is not optimal, and the heat exchange becomes poor due to the lack of supercooling degree or superheating degree, and the temperature difference between the two ends of the evaporator and the condenser and other components will decrease; even if leakage just occurs, the temperature difference at the leakage position will decrease, so the target parameters can be used to quickly determine whether the refrigerant leaks and stop the machine in time.

[0117] Based on the same inventive concept, the present application also provides an overall air conditioner, which applies the overall air conditioner control method provided by the above embodiments.

[0118] The overall air conditioner provided by the embodiments of the present application can start the refrigerant leakage detection device to obtain target parameters when the preset condition is triggered by applying the control method of the overall air conditioner provided by the above embodiments. The target parameters include the temperature difference between the inlet and outlet of the evaporator, the temperature difference between the outlet temperature of the evaporator and the suction temperature, the temperature difference between the outlet temperature of the condenser and the exhaust temperature, and the temperature difference between the outlet temperature and the indoor temperature. When any target parameter is less than or equal to the corresponding preset temperature difference for a first preset time length, it is determined that the air conditioner refrigerant leaks, and the air conditioner is controlled to stop. Because the refrigerant circulates in the refrigerant circulation loop, once it leaks, the amount of refrigerant participating in heat exchange decreases. Due to the decrease in the amount of refrigerant, the heat exchange state of the whole machine is not optimal, and the lack of supercooling or overheating leads to poor heat exchange, and the temperature difference between the evaporator and the condenser will decrease. Even if it just starts to leak, the temperature difference at the leakage position will decrease. Therefore, the target parameters can be used to quickly determine whether the refrigerant leaks and stop the machine in time.

[0119] It should be noted that in the description of the present application, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise specified, "a plurality of" means at least two.

[0120] It can be understood that the same or similar parts in the above embodiments can be mutually referred to, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

Claims

1. An integrated air conditioning control method, characterized in that: include: When a preset condition is triggered, the refrigerant leakage detection device is turned on to obtain target parameters; the target parameters include the temperature difference between the evaporator inlet and outlet, the temperature difference between the evaporator outlet temperature and the suction temperature, the temperature difference between the condenser outlet temperature and the exhaust temperature, and the temperature difference between the outlet air temperature and the room inside temperature; When any target parameter is less than or equal to the corresponding preset temperature difference for a first preset time period, it is determined that the air conditioner refrigerant is leaking and the air conditioner is controlled to shut down; Also includes: When it is determined that the air conditioner refrigerant is leaking, determining the refrigerant leakage location according to the target parameter; Determining the refrigerant leakage location according to the target parameter includes: When only the evaporator inlet and outlet temperature difference is less than or equal to the corresponding first preset temperature difference, it is determined that the evaporator is leaking; and / or, when only the temperature difference between the evaporator outlet temperature and the suction temperature is less than or equal to the corresponding second preset temperature difference, it is determined that the indoor and outdoor connecting air pipe is leaking; And / or, when only the temperature difference between the condenser outlet temperature and the exhaust gas temperature is less than or equal to the corresponding third preset temperature difference, it is determined that the condenser is leaking.

2. The method according to claim 1, characterized in that Also includes: Obtaining the operating frequency of the air conditioner after it is turned on and operated for a second preset time period; When the operating frequency is not within the preset operating frequency range, a preset condition is triggered.

3. The method according to claim 1, characterized in that Also includes: When none of the target parameters is less than or equal to the corresponding preset temperature difference for a first preset time period, obtaining the chassis condensed water level; The air conditioner is controlled based on the chassis condensed water level.

4. The method according to claim 3, wherein: The controlling of the air conditioner based on the chassis condensed water level includes: When the chassis condensed water level is less than or equal to a first preset chassis condensed water level, obtaining the water level of the water spray chamber; Whether to start the water spray system is controlled based on the water level of the water spray chamber.

5. The method according to claim 4, characterized in that: The controlling whether to start the water spray system based on the water level of the water spray chamber includes: When the water level in the water spray chamber is less than or equal to the first preset water spray chamber water level, the water spray system is controlled not to start, and an alarm of a first preset form is issued to notify the user to add water.

6. The method according to claim 4, wherein: The controlling whether to start the water spray system based on the water level of the water spray chamber includes: When the water level in the water spray chamber is greater than the first preset water spray chamber water level and less than the second preset water spray chamber water level, the water spray system is controlled to open and an alarm of a second preset form is issued to notify the user that the water is low.

7. The method according to claim 4, characterized in that: The controlling whether to start the water spray system based on the water level of the water spray chamber includes: When the water level in the water spray chamber is greater than the second preset water spray chamber water level, the water spray system is controlled to open.

8. The method according to claim 3, wherein: The controlling of the air conditioner based on the chassis condensed water level includes: When the chassis condensed water level is greater than the first preset chassis condensed water level and less than the second preset chassis condensed water level, the current state is maintained unchanged.

9. The method according to claim 3, characterized in that The controlling of the air conditioner based on the chassis condensed water level includes: When the bottom pan condensed water level is greater than the second preset bottom pan condensed water level, a third preset alarm is issued to inform the user not to add water.

10. An integrated air conditioning control device, characterized in that: include: A refrigerant detection activation module is used to activate the refrigerant leakage detection device when a preset condition is triggered to obtain target parameters; the target parameters include the evaporator inlet and outlet temperature difference, the temperature difference between the evaporator outlet temperature and the suction temperature, the temperature difference between the condenser outlet temperature and the exhaust temperature, and the temperature difference between the outlet air temperature and the room inside temperature; The air conditioner shutdown control module is configured to determine that the air conditioner refrigerant is leaking and control the air conditioner to shut down when any target parameter is less than or equal to the corresponding preset temperature difference for a first preset time period; and further includes: when the air conditioner refrigerant is leaking, determining the refrigerant leakage location according to the target parameter; determining the refrigerant leakage location according to the target parameter includes: When only the temperature difference between the evaporator inlet and outlet is less than or equal to the corresponding first preset temperature difference, the evaporator is determined to be leaking; and / or, when only the temperature difference between the evaporator outlet temperature and the intake temperature is less than or equal to the corresponding second preset temperature difference, the indoor and outdoor connecting air pipe is determined to be leaking; and / or, when only the temperature difference between the condenser outlet temperature and the exhaust temperature is less than or equal to the corresponding third preset temperature difference, the condenser is determined to be leaking.

11. An integrated air conditioning control system, characterized in that: include: at least one processor and at least one memory; The memory stores executable instructions of the processor; The processor is configured to execute the method according to any one of claims 1 to 9.

12. An integrated air conditioner, characterized in that: The method according to any one of claims 1 to 9 is used.

Images