Integral air conditioner control method, device and system and integral air conditioner

Abstract

The invention discloses an integral air conditioner control method, device and system and an integral air conditioner, and belongs to the field of integral air conditioners. When the preset condition is triggered, the refrigerant leakage detection device is started to obtain a target parameter; the target parameters comprise an evaporator inlet and outlet temperature difference, a temperature difference between an evaporator outlet temperature and an air suction temperature, a temperature difference between a condenser outlet temperature and an air exhaust temperature, and a temperature difference between an air outlet temperature and a room inner side temperature; and air conditioner refrigerant leakage is determined, and the air conditioner is controlled to stop. Due to the fact that the refrigerant circulates in the refrigerant circulation loop, once the refrigerant leaks, the refrigerant participating in heat exchange is reduced, the temperature difference value of the two ends of the evaporator, the condenser and other components can be reduced, even if leakage begins, the temperature difference value at the leakage position can be reduced, and therefore whether the refrigerant leaks or not can be rapidly determined according to the target parameters, and the machine can be stopped in time.

Description

Technical Field

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

[0002] An air conditioner is a device that uses heat exchange to adjust the indoor temperature. Refrigerant, as a medium for exchanging heat, plays a very important role. At the same time, changes in the amount of refrigerant have a great impact on the performance of the air conditioner. Therefore, a good air conditioner must have a certain amount of refrigerant to play its greatest role. As the whole machine runs, the entire system will produce temperature rise and drop, as well as pressure increase and decrease. The amount of refrigerant will also have a great impact on these parameters. When the refrigerant leaks, the temperature or pressure of the entire device is very high, and the risk of damage to the air conditioner components increases. At the same time, refrigerant leakage under certain environmental conditions is very likely to cause fire or explosion, resulting in property or manpower loss. Therefore, it is very important to always ensure the stability of the air-conditioning system and avoid refrigerant leakage to maintain the safe operation of the air conditioner.

[0003] In existing integrated air conditioners, the compressor, evaporator, condenser and other main components are integrated into one box, and there are many pipes welded in the entire cavity. Window air conditioners need to be fixed on the window for use. When the air conditioning unit is running, the vibration of the entire shell will be very 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, causing refrigerant leakage, which is easy to be discovered. However, if it is a small gap, the user usually cannot detect the refrigerant leakage. The refrigerant leaks slowly over a long period of time, making the cooling effect of the air conditioning system worse. When the refrigerant leaks a lot, it will cause the compressor to burn out. When the air conditioner is running under high temperature conditions, once the refrigerant leaks, the exhaust temperature of the compressor will rise quickly. If it cannot be shut down in time and the fault is reported and it continues to run, there will be great safety hazards. Therefore, it is very necessary to detect the refrigerant leakage in time.

[0004] The integrated air conditioner in the prior art is prone to refrigerant leakage due to various human errors, resonance of the whole machine or pipe welding problems. The traditional control method for detecting leakage is not timely, and it is impossible to feedback the refrigerant status of the whole machine and notify the user in time to solve the problem. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present application provides an integrated air conditioning control method, device, system and integrated air conditioner to solve the problem that the traditional control method for detecting air leakage in the existing integrated air conditioner is not timely, and it is impossible to feedback the refrigerant status of the whole machine and notify the user in time to solve the problem.

[0006] The technical solution adopted by this application to solve its technical problem is:

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

[0008] When the 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 inlet and outlet of the evaporator, 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 temperature and the room inner temperature;

[0009] 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.

[0010] Furthermore, it also includes:

[0011] Obtaining the operating frequency of the air conditioner after it is turned on and operated for a second preset time period;

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

[0013] Furthermore, it also includes:

[0014] When it is determined that the air conditioner refrigerant is leaking, determining the refrigerant leakage location according to the target parameter;

[0015] Determining the refrigerant leakage location according to the target parameter includes:

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

[0017] 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 is leaking;

[0018] 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 value, it is determined that the condenser is leaking.

[0019] Furthermore, it also includes:

[0020] When there is no target parameter that is less than or equal to the corresponding preset temperature difference for a first preset time period, obtaining the condensed water level of the chassis;

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

[0022] Further, the controlling of the air conditioner based on the chassis condensed water level includes:

[0023] 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;

[0024] Whether to start the water spray system is controlled based on the water level of the water spray chamber.

[0025] Furthermore, the controlling whether to start the water spray system based on the water level of the water spray chamber includes:

[0026] 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.

[0027] Furthermore, the controlling whether to start the water spray system based on the water level of the water spray chamber includes:

[0028] 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 start, and an alarm of a second preset form is issued to inform the user that the water is low.

[0029] Furthermore, the controlling whether to start the water spray system based on the water level of the water spray chamber includes:

[0030] 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 start.

[0031] Further, the controlling of the air conditioner based on the chassis condensed water level includes:

[0032] When the chassis condensed water level is greater than the second preset chassis condensed water level and less than the second preset chassis condensed water level, the current state is maintained unchanged.

[0033] Further, the controlling of the air conditioner based on the chassis condensed water level includes:

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

[0035] In a second aspect, an integrated air conditioning control device is provided, comprising:

[0036] A refrigerant detection start module is used to start 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 evaporator outlet temperature and the suction temperature temperature difference, the condenser outlet temperature and the exhaust temperature temperature difference, and the outlet temperature and the room inner temperature temperature difference;

[0037] The air conditioner shutdown control module is used 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.

[0038] In a third aspect, an integrated air conditioning 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, an integrated air conditioner is provided, applying the above method.

[0043] Beneficial effects:

[0044] The technical solution of the present application provides an integrated air conditioning control method, device, system and integrated air conditioner. When the preset condition is triggered, the refrigerant leakage detection device is turned on to obtain the target parameters; the target parameters include the evaporator inlet and outlet temperature difference, the evaporator outlet temperature and the suction temperature temperature difference, the condenser outlet temperature and the exhaust temperature temperature difference and the temperature difference between the outlet 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, the air conditioning refrigerant is determined to be leaked, and the air conditioner is controlled to shut down. Because the refrigerant circulates in the refrigerant circulation loop, once it leaks, the refrigerant involved in the heat exchange becomes less. Due to the reduction in the amount of refrigerant, the heat exchange state of the whole machine is not optimal. There is no supercooling or superheating, resulting in poor heat exchange. The temperature difference at both ends of components such as the evaporator and the condenser will become smaller. Even if the leakage just starts, the temperature difference at the leakage position will decrease. In this way, it is possible to quickly determine whether the refrigerant is leaking and shut down in time according to the target parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 is a flow chart of an integrated air conditioning control method provided in an embodiment of the present application;

[0047] Figure 2 It is a flow chart of a specific integrated air-conditioning refrigerant leakage detection method provided in an embodiment of the present application;

[0048] Figure 3 It is a flow chart of a specific integrated air conditioning water level control method provided in an embodiment of the present application;

[0049] Figure 4 is a schematic cross-sectional view of a specific integrated air conditioner structure provided in an embodiment of the present application;

[0050] Figure 5 It is a schematic cross-sectional view of a specific integrated air-conditioning water spray assembly structure provided in an embodiment of the present application;

[0051] Figure 6 It is a structural schematic diagram of an integrated air conditioning control device provided in an embodiment of the present application;

[0052] Figure 7 It is a schematic diagram of an integrated air conditioning control device system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application is described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other implementation methods obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0054] In existing integrated air conditioners, all components of the entire device are installed inside an outer cover, that is, the evaporator, heat exchanger and compressor are all in one outer cover. When the user finds that there may be a refrigerant leak, he or she has to disassemble the machine for inspection and measurement, which increases the process and consumes energy.

[0055] The existing technology for detecting refrigerant leakage is as follows: detecting the current outdoor ambient temperature of the outdoor unit of the air-conditioning system; detecting a first refrigerant pressure value to compare whether the first refrigerant pressure value is greater than a preset refrigerant pressure value, obtaining a first comparison result, and judging whether a refrigerant leakage occurs in the air-conditioning system based on the first comparison result. This patented method can, when the pressure around the air-conditioning unit is relatively stable, detect the pressure value and compare it with the preset pressure value, and to a certain extent, can achieve the judgment of refrigerant leakage. However, the parameters based on which this method is judged are relatively single, the detection and control method is relatively simple, and it is difficult for the pressure value to have a large difference within a certain space. Moreover, it is easy to make a misjudgment due to the fluctuation of the surrounding air pressure value during the detection, and it cannot be directly judged based on the fundamental parameters of the air conditioner, so the degree of applicability is relatively low.

[0056] Or by obtaining the indoor refrigerant concentration, and determining the current refrigerant state according to the refrigerant concentration and the pre-acquired refrigerant leakage threshold relationship, when the air conditioner is running, the indoor refrigerant concentration is detected by the refrigerant concentration sensor, and when it is determined that the refrigerant state is in a leakage state, the air conditioner is controlled to recycle the refrigerant in the refrigerant circulation loop. This solution can realize the recovery of leaked refrigerant, and to a certain extent, it can avoid the continued leakage of refrigerant to harm indoor personnel and potential fire risks, but refrigerant recovery is not so easy, and the process involved is relatively complicated. In order to achieve a better effect, the relevant system parameters must be accurately detected and the location of the refrigerant leakage must be accurately located before the leaked refrigerant can be recovered. Moreover, the device does not perform reasonable detection for the stage of refrigerant leakage. When the refrigerant leaks completely, the user judges that the refrigerant has leaked completely by feeling that the air conditioning cooling effect is poor. At this time, using the device for detection cannot effectively recover the refrigerant, and the judgment and detection of this method are also single and inaccurate, and the effect of detecting refrigerant leakage is general.

[0057] To solve this problem, refer to Figure 1 , the 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 evaporator outlet temperature and the suction temperature temperature difference, the condenser outlet temperature and the exhaust temperature temperature difference, and the outlet temperature and the room inner temperature temperature difference;

[0059] In one embodiment, the preset trigger condition is receiving a refrigerant leakage detection device start instruction input by a 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, wherein the stable operating state means that the air conditioner can maintain the preset operating frequency for a specified time when the ambient temperature and the set temperature remain unchanged. Therefore, the operating frequency of the air conditioner after the second preset time is obtained; when the operating frequency is not in the preset operating frequency range, the preset condition is triggered. The second preset time is the frequency increase stage after the air conditioner is turned on. At this time, the air conditioner frequency is unstable, so it is necessary to obtain the operating frequency after the second preset time is turned on.

[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 at both ends of components such as the evaporator and condenser will decrease, so the refrigerant involved in the refrigeration cycle will decrease and the temperature change value will become smaller. When the air conditioner refrigerant is normal, its temperature difference is greater than the corresponding preset temperature difference. The reason why this application detects multiple target parameters is that the refrigerant leakage rate is slow in some cases. When only one of them is detected, if the refrigerant is not leaking at that place, it will take a long time to determine the refrigerant leakage. Therefore, when detecting multiple target parameters, once a leak occurs at one place, the temperature difference at that place will change immediately, which can ensure timely control.

[0063] On the other hand, the refrigerant leakage location can also be determined based on multiple target parameters. When the air conditioner refrigerant is determined to be leaking, the refrigerant leakage location is determined based on the target parameters;

[0064] Determining the refrigerant leakage location according to the target parameter includes:

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

[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, it is determined that the indoor and outdoor connecting air pipe is leaking.

[0067] 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 value, it is determined that the condenser is leaking.

[0068] When the refrigerant leak is confirmed and the leak location is determined, a preset alarm can be sent, or a specified code can be displayed to indicate the refrigerant leak and the leak location. The preset alarm can be one or more of a buzzer, a light, and a display screen, which is not specifically limited in the present embodiment.

[0069] For existing integrated air conditioners, when all parameters of the air conditioner operation are normal, the cooling capacity may decrease and the heat exchange capacity may weaken. At this time, impurities and blockages may appear on the surface of the two devices or even inside the entire chassis. Therefore, only using the condensed water generated by the evaporator to achieve the water pumping effect on the outdoor heat exchanger through the water pumping ring cannot achieve the function of self-cleaning. In addition, the condensed water generated by the air conditioner itself is limited, and the heat exchange effect cannot be significantly enhanced.

[0070] As a preferred implementation method of the embodiment of the present application, when there is no target parameter that is less than or equal to the corresponding preset temperature difference for a first preset time period, the chassis condensation water level is obtained; and the air conditioner is controlled based on the chassis condensation water level.

[0071] It can be understood that the integrated air conditioner uses condensed water at the condenser for cleaning. When the air conditioner operation is unstable (that is, the operating frequency is no longer in the preset frequency range) and there is no target parameter that continues for the first preset time period less than or equal to the corresponding preset temperature difference, it may be because the air conditioner is dirty and blocked. Therefore, when the user receives an instruction to start enhanced cleaning, the chassis condensed water level can be obtained; the air conditioner is controlled based on the chassis condensed water level.

[0072] The air conditioner is controlled based on the condensed water level of the chassis, including:

[0073] When the chassis condensed water level is less than or equal to the first preset chassis condensed water level, the water level in the water spray chamber is obtained; the first preset chassis condensed water level indicates the lowest water level at which the water pump can pump water. Therefore, the water level is too low to pump water at this time, and the water spray system needs to be turned on. Before the water spray system is turned on, the water level in the water spray chamber needs to be determined, and whether to turn on the water spray system is controlled based on the water level in the water spray chamber. Users can add water through the water inlet set in the water tank. The specific installation position of each component is not specifically limited in this application, and reference can be made to the installation position of this application. Figure 4 .

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

[0075] When the chassis condensed water level is greater than the second preset chassis condensed water level, a third preset alarm is issued to inform the user not to add water. Adding water at this time will cause water to overflow and cause the air conditioner to leak, so an alarm needs to be sent.

[0076] As a preferred implementation of the present application, whether to start the water spray system based on the water level of the water spray chamber is controlled, including:

[0077] 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.

[0078] 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 start, and an alarm of a second preset form is issued to inform the user that the water is low.

[0079] 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 start.

[0080] Most of the existing technologies only provide a traditional single refrigerant detection and control method, which can detect the state of the refrigerant to a certain extent. However, when a misjudgment occurs, it will cause a very bad experience for the user, and there is no operation for the user to choose. Moreover, compared with the detection of pressure value, the detection temperature is easier to control, and the detection results are more stable and reliable. The device proposed in this patent can effectively realize the detection and judgment of refrigerant leakage, including temperature detection between various pipeline components and the overall stability of the entire unit. When the refrigerant leaks, it provides a more reliable judgment and timely feedback to the user. At the same time, according to the detection results, when it is judged that the refrigerant has not leaked, it provides the user with an autonomously selected enhanced heat exchange and cleaning function system, which effectively realizes the monitoring of refrigerant leakage and selectively enhances the primary performance of the air conditioner: refrigeration capacity, satisfies the user's refrigeration experience, and improves the stability of the air conditioner.

[0081] The main invention points are:

[0082] 1. Design a new efficient and timely refrigerant leakage detection and control method to achieve real-time monitoring feedback of refrigerant leakage during air conditioning operation, improve air conditioning safety, and ensure long-term healthy operation

[0083] 2. Provide an optional water-adding system device. According to the feedback of the air conditioner refrigerant leakage detection results, the user can choose to start the water-adding device to enhance heat exchange and cleaning, improve the cooling capacity, cleanliness and stability of the air conditioner

[0084] 3. Add water level detection and control feedback to the water tank to enhance the convenience of heat exchange and effectively utilize water resources.

[0085] like Figure 2 As shown, when the user uses the air conditioner, the air conditioner is started and runs for the preset time t1. After the end, it enters the next stage of stable operation time. If the operation is stable, this command will continue to be executed to ensure the normal operation 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 turned on to obtain the real-time temperature value difference △T at both ends of each component set in the air conditioner refrigerant flow path; and compare it with the preset deviation value to determine whether the refrigerant is leaking; if the judgment result is yes, a shutdown protection instruction is issued to realize the shutdown protection of the air conditioner; if the judgment result is no, the whole machine continues to run, and the refrigerant leakage detection logic is circulated, and it is determined whether to issue an alarm based on the water level H of the water spray chamber detected by the detection device to remind the user to add water, so as to ensure the long-term operation of the water spray device.

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

[0087] Figure 4 and Figure 5 As shown, the integrated air conditioner is divided into two parts, indoor and outdoor. The indoor side has an evaporator, an electrical box, and an indoor air duct system, and the outdoor side has a condenser and an outdoor air duct system. The water spray chamber is set on the lower side of the rear cover, above the fan system device, and a pressure pump is connected to the water spray chamber. The entire water adding device (water spray chamber and chassis water storage space) uses a water level detection meter. The operation of the system controls the water addition according to the water level. Figure 3 As shown in the figure, after the system starts water level detection, the condensed water level h of the chassis is detected. When h≥h2, the condensed water generated by the whole machine has exceeded the optimal water level of the outdoor fan blades, and too much water can no longer be added. At this time, the buzzer 1 responds and the green indicator light is on, which can inform the user that there is enough water in the chassis space and no water needs to be added; when h1<h<h2, the buzzer does not alarm and the indicator light does not light up; when h≤h1 (h1 is the lowest water level height of the outdoor axial fan blade water pumping circle, the integral air conditioner usually sets a water pumping circle around the outdoor axial fan blades, which raises the water on the chassis and passes through The water level detection of the water spray chamber is started to detect the water level H. When H≤H1, the buzzer 1 sounds an alarm and emits a yellow light, the water spray system is not turned on, and the user is notified to add water; when H1<H<H2, the water spray system is turned on, and the pressure pump connected to the water spray chamber starts to pressurize to achieve water spraying, and the indicator light turns white to notify the user that there is less water; when H≥H2, the water spray system is turned on to spray water, thereby achieving the effect of enhancing heat exchange and cleaning.

[0088] The embodiment of the present application provides a method for detecting refrigerant leakage of an air conditioner, aiming to solve the problem that current air conditioners cannot effectively detect refrigerant leakage. At the same time, through signal feedback and based on user experience, it can provide users with the option of enhancing the refrigeration effect of the entire machine and cleaning the heat exchanger to achieve enhanced heat exchange to avoid blockage caused by impurities in the heat exchanger. The detection method replaces the traditional method of judging whether there is a leak by detecting pressure or the method of manually disassembling the machine for inspection, meets the real-time monitoring effect, and ensures the stability of the state of the whole machine, greatly saving material and manpower, and improving user experience. On the basis of effectively realizing the monitoring of refrigerant leakage, a system for enhancing heat exchange and cleaning functions based on experience is provided to users, which effectively enhances the refrigeration capacity of the air conditioner, meets the user's refrigeration experience, and improves the stability of the air conditioner.

[0089] Based on the same inventive concept, Figure 7 As shown, the present application also provides an integrated air conditioning control device 60, including:

[0090] The refrigerant detection start module 61 is used to start 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 evaporator outlet temperature and the suction temperature temperature difference, the condenser outlet temperature and the exhaust temperature temperature difference and the outlet temperature and the room inner temperature temperature difference;

[0091] In one embodiment, the operating frequency of the air conditioner after it is turned on and running for a second preset time period is obtained; when the operating frequency is not within the preset operating frequency range, a preset condition is triggered.

[0092] In another embodiment, when a user turns on cooling of the refrigerant detection device, a preset condition is triggered.

[0093] The air conditioner shutdown control module 62 is used 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.

[0094] Furthermore, when it is determined that the air conditioner refrigerant is leaking, the refrigerant leakage location is determined according to the target parameter;

[0095] Determining the refrigerant leakage location according to the target parameter includes:

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

[0097] 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 is leaking;

[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 value, it is determined that the condenser is leaking.

[0099] Also includes:

[0100] When there is no target parameter that is less than or equal to the corresponding preset temperature difference for a first preset time period, obtaining the condensed water level of the chassis;

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

[0102] Wherein, the controlling of the air conditioner based on the condensed water level of the chassis includes:

[0103] 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;

[0104] Whether to start the water spray system is controlled based on the water level of the water spray chamber.

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

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

[0107] Further, whether to start the water spray system based on the water level of the water spray chamber includes:

[0108] 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.

[0109] 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 start, and an alarm of a second preset form is issued to inform the user that the water is low.

[0110] 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 start.

[0111] The integrated air conditioning control device provided in the embodiment of the present application turns on the refrigerant leakage detection device when the preset conditions are triggered to obtain the target parameters; 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 intake 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 temperature inside the room. When any of the target parameters is less than or equal to the corresponding preset temperature difference for a first preset time period, the air conditioning refrigerant is determined to be leaked, and the air conditioning is controlled to shut down. Because the refrigerant circulates in the refrigerant circulation loop, once it leaks, the refrigerant involved in the heat exchange becomes less. Due to the reduction in the amount of refrigerant, the heat exchange state of the whole machine is not optimal. There is no supercooling or superheating, resulting in poor heat exchange. The temperature difference at both ends of components such as the evaporator and the condenser will become smaller. Even if the leakage just starts, the temperature difference at the leakage position will decrease. In this way, it is possible to quickly determine whether the refrigerant is leaking and shut down in time according to the target parameters.

[0112] Based on the same inventive concept, Figure 7 As shown, the present application also provides an integrated air conditioning control system 70, including:

[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 integrated air conditioning control method provided in the above embodiment.

[0116] The integrated air conditioning control system provided by the embodiment of the present application stores executable instructions of the processor through the memory. When the executable instructions are executed, the processor can start the refrigerant leakage detection device when the preset conditions are triggered to obtain the 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 temperature and the room inner temperature. When any target parameter is less than or equal to the corresponding preset temperature difference for a first preset time, it is determined that the air conditioning refrigerant is leaking, and the air conditioning is controlled to shut down. Because the refrigerant circulates in the refrigerant circulation loop, once it leaks, the refrigerant involved in the heat exchange becomes less. Due to the reduction in the amount of refrigerant, the heat exchange state of the whole machine is not optimal. There is no supercooling or superheating, which leads to poor heat exchange. The temperature difference at both ends of components such as the evaporator and the condenser will become smaller. Even if the leakage just starts, the temperature difference at the leakage position will decrease. In this way, it is possible to quickly determine whether the refrigerant is leaking and shut down in time according to the target parameters.

[0117] Based on the same inventive concept, the present application also provides an integrated air conditioner, which uses the integrated air conditioner control method provided in the above embodiment.

[0118] The integrated air conditioner provided in the embodiment of the present application can start the refrigerant leakage detection device to obtain the target parameters by applying the integrated air conditioning control method provided in the above embodiment when the preset conditions are triggered; 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 temperature inside the room. When any of the target parameters is less than or equal to the corresponding preset temperature difference for a first preset time, the air conditioning refrigerant is determined to be leaked, and the air conditioner is controlled to shut down. Because the refrigerant circulates in the refrigerant circulation loop, once it leaks, the refrigerant involved in the heat exchange becomes less. Due to the reduction in the amount of refrigerant, the heat exchange state of the whole machine is not optimal. There is no supercooling or superheating, resulting in poor heat exchange. The temperature difference at both ends of components such as the evaporator and the condenser will become smaller. Even if the leakage just begins, the temperature difference at the leakage position will decrease. In this way, it is possible to quickly determine whether the refrigerant is leaking and shut down in time according to the target parameters.

[0119] It should be noted that, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" refers to at least two.

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

Claims

1. An integrated air conditioning control method, characterized in that: include: When the 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 inlet and outlet of the evaporator, 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 temperature and the room inner 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.

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 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 inlet and outlet temperature difference of the evaporator 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 value, 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 value, it is determined that the condenser is leaking.

4. The method according to claim 1, characterized in that: Also includes: When there is no target parameter that is less than or equal to the corresponding preset temperature difference for a first preset time period, obtaining the condensed water level of the chassis; The air conditioner is controlled based on the chassis condensed water level.

5. The method according to claim 4, characterized in that: The controlling of the air conditioner based on the condensed water level of the chassis 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.

6. The method according to claim 5, 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.

7. The method according to claim 5, 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 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 start, and an alarm of a second preset form is issued to inform the user that the water is low.

8. The method according to claim 5, 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 start.

9. The method according to claim 4, characterized in that: The controlling of the air conditioner based on the condensed water level of the chassis includes: When the chassis condensed water level is greater than the second preset chassis condensed water level and less than the second preset chassis condensed water level, the current state is maintained unchanged.

10. The method according to claim 4, characterized in that The controlling of the air conditioner based on the condensed water level of the chassis includes: When the bottom pan condensed water level is greater than the second preset bottom pan condensed water level, an alarm of a third preset form is issued to inform the user not to add water.

11. An integrated air conditioning control device, characterized in that: include: A refrigerant detection start module is used to start 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 evaporator outlet temperature and the suction temperature temperature difference, the condenser outlet temperature and the exhaust temperature temperature difference, and the outlet temperature and the room inner temperature temperature difference; The air conditioner shutdown control module is used 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.

12. 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 1-10.

13. An integrated air conditioner, characterized in that: The method according to any one of claims 1 to 10 is used.

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