An air conditioning system and control method

Abstract

Embodiments of the present application provide an air conditioning system and a control method, relate to the technical field of air conditioning equipment, and solve the problem of unreasonable start time of starting a sterilization mode and exit time of exiting the sterilization mode in related technologies, and also relate to the solution of linkage of different sterilization modes and dehumidification modes. The air conditioning system comprises an outdoor unit comprising an outdoor heat exchanger, an indoor unit comprising an indoor heat exchanger, and a controller. The controller is configured to: when the cumulative running time of the air conditioning system is greater than or equal to a running time threshold, or when the time interval between the last start time and the previous start time of the air conditioning system is greater than or equal to a time interval threshold, start a sterilization working mode of the air conditioning system; determine a stop sterilization time corresponding to the current temperature of the indoor environment and the first current humidity of the indoor environment according to the correspondence between the temperature and humidity of the indoor environment and the sterilization time length; and exit the sterilization working mode at the stop sterilization time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning equipment, in particular to an air conditioning system and a control method. BACKGROUND

[0002] In order to meet the growing needs of people, air conditioning equipment has more and more function modes, such as sterilization working mode and dehumidification mode. The start and exit of many function modes depend on the manual control of the user. Taking the sterilization working mode as an example, the start time of the air conditioning equipment entering the sterilization working mode and the exit time of the air conditioning equipment exiting the sterilization working mode are both manually controlled by the user. The above-mentioned user manually determines the start time of entering the sterilization working mode and the exit time of exiting the sterilization working mode, which often causes unreasonable start time or exit time, such as too late start time causing the unsuitable indoor environment not to be improved in time; or too late exit time causing excessive sterilization of the indoor environment, resulting in resource waste and unsuitable indoor environment. Therefore, how to intelligently and accurately determine the start time and stop time of running the sterilization working mode is a problem to be solved at present. SUMMARY

[0003] Embodiments of the present application provide an air conditioning system and a control method to at least solve the problem of unreasonable start time of starting the sterilization mode and exit time of exiting the sterilization mode in the related art.

[0004] In a first aspect, an air conditioning system is provided, comprising: an outdoor unit, the outdoor unit comprising an outdoor heat exchanger; an indoor unit, the indoor unit comprising an indoor heat exchanger, the indoor heat exchanger being connected to the outdoor heat exchanger through a pipeline; a controller; the controller being connected to the indoor unit and the outdoor unit; the controller being configured to: start a sterilization working mode of the air conditioning system when a cumulative running time length of the air conditioning system is greater than or equal to a running time length threshold, or when a time interval between a last start time and a previous start time of the air conditioning system is greater than or equal to a time interval threshold; determine a stop sterilization time corresponding to a current temperature of an indoor environment and a first current humidity of the indoor environment according to a corresponding relationship between the temperature and humidity of the indoor environment and a sterilization time length; and exit the sterilization working mode at the stop sterilization time.

[0005] It should be noted that the air in the indoor environment is internally circulated when the air conditioning system is running. During the internal circulation of the air conditioning system, bacteria are easily bred in the indoor environment, and the longer the running time, the more bacteria are bred in the indoor environment. In addition, if the air conditioning system is not turned on for a long time, i.e., the air conditioning system is not running for a long time, many bacteria will also be bred in the devices of the air conditioning system, and the longer the time of not turning on, the more bacteria will be bred in the devices of the air conditioning system, i.e., the longer the time interval between two start times, the more bacteria will be bred in the devices of the air conditioning system.

[0006] The runtime threshold can be a runtime of the air conditioning system when the content of the air bacteria in the indoor environment reaches a first preset bacteria quantity after the air conditioning system is running. The first preset bacteria quantity is a critical value between the bacteria quantity in the indoor environment affecting the health of the indoor user and the bacteria quantity in the indoor environment not affecting the health of the indoor user.

[0007] In addition, the time interval threshold can be a time length when the content of the bacteria bred in the device of the air conditioning system reaches a second preset bacteria quantity when the air conditioning system is not running. The second preset bacteria quantity is a critical value between the bacteria quantity of the bacteria bred in the device of the air conditioning system affecting the health of the indoor user and the bacteria quantity of the bacteria bred in the device of the air conditioning system not affecting the health of the indoor user.

[0008] The technical scheme provided by the embodiments of the present application at least brings the following beneficial effects: when the cumulative running time of the current running of the air conditioning system reaches or exceeds the runtime threshold, the number of the bacteria bred in the indoor environment can exceed the first preset bacteria quantity, and therefore, when the cumulative running time reaches or exceeds the runtime threshold, the sterilization working mode is started accurately and timely to sterilize the bacteria bred in the indoor environment, thereby reducing the number of the bacteria bred in the indoor environment and ensuring the cleanliness and safety of the indoor environment. Meanwhile, when the time interval between the start time of the current (i.e., the last time) running of the air conditioning system and the start time of the last running is greater than or equal to the time interval threshold, the number of the bacteria bred in the device of the air conditioning system can exceed the second preset bacteria quantity, and therefore, when the time interval between the start time of the current running of the air conditioning system and the start time of the last running is greater than or equal to the time interval threshold, the sterilization working mode is started when the current running of the air conditioning system is started, so as to reduce the number of the bacteria bred in the indoor environment and ensure the hygiene and safety of the indoor environment. Based on this embodiment, the controller of the air conditioning system can flexibly determine the start time of starting the sterilization working mode according to the cumulative running time of the current running or the start time of the current running and the start time of the last running, that is, intelligently and flexibly determine the start time of sterilizing the bacteria bred in the indoor environment, so as to ensure the rationality of the start time of the sterilization working mode. Further, the stop sterilization time of exiting the sterilization working mode is determined according to the current temperature and the first current humidity of the indoor environment, so that the stop sterilization time is adapted to the current temperature and the first current humidity, and the rationality of the stop sterilization time is ensured, thereby avoiding the problems of resource waste caused by too much resource consumption for sterilization due to the sterilization mode being too long and the problem of poor sterilization effect caused by the sterilization mode being too short. In this way, the air conditioning system can reasonably control the start time of the sterilization working mode and the stop sterilization time of the sterilization working mode, so as to ensure that the air conditioning system can safely and effectively sterilize the indoor environment.

[0009] In some embodiments, the sterilization mode includes at least a first sterilization mode and a second sterilization mode, the air conditioner system is capable of high-temperature sterilization of the air in the indoor environment when the air conditioner system is running in the first sterilization mode, and the air conditioner system is capable of converting water molecules in the indoor environment into water ions with sterilization function when the air conditioner system is running in the second sterilization mode, and the controller is configured to execute the sterilization mode of the air conditioner system when the cumulative running time of the air conditioner system is greater than or equal to the running time threshold, including: obtaining the cumulative running time of the air conditioner system and the current running mode of the air conditioner system; when the cumulative running time is greater than or equal to the running time threshold and the current running mode is in the heating operation mode, the first sterilization mode is started; when the cumulative running time is greater than or equal to the running time threshold and the current running mode is in the cooling operation mode, the second sterilization mode is started.

[0010] Based on the scene in which the air conditioner system has been running, in the case of considering the cumulative running time of the current running, in combination with the current running mode of the air conditioner system, the sterilization mode suitable for the current running mode is determined to ensure the sterilization effect. Specifically, when the current running mode is in the heating operation mode, the indoor heat exchanger is used for heating the indoor environment to increase the indoor environment temperature, and in the heating operation mode, the indoor environment temperature is very high, so when the first sterilization mode is used, the indoor environment temperature can reach a certain temperature that can produce sterilization effect by continuously increasing the heating temperature to be reached by the indoor environment, that is, high-temperature sterilization. Therefore, in the heating operation mode, the first sterilization mode based on high-temperature sterilization is used, which effectively utilizes the relatively high indoor temperature in the heating mode and is conducive to improving the sterilization speed. When the current running mode is in the cooling operation mode, the indoor heat exchanger is used for cooling the indoor environment to reduce the indoor environment temperature, and in the cooling operation mode, the water content in the indoor environment is relatively high, so when the second sterilization mode is used, more water ions are generated, which is more conducive to the sterilization effect.

[0011] In some embodiments, the controller is configured to determine the stop sterilization time corresponding to the current temperature of the indoor environment and the first current humidity of the indoor environment according to the correspondence between the temperature and humidity of the indoor environment and the sterilization time, including: determining the current sterilization time corresponding to the current temperature of the indoor environment and the first current humidity of the indoor environment according to the correspondence between the temperature and humidity of the indoor environment and the sterilization time; determining the stop sterilization time according to the start time of the sterilization mode and the current sterilization time.

[0012] It should be noted that the correspondence between the temperature and humidity of the indoor environment and the sterilization time can be stored in the form of a data table or in the form of an algorithm formula. In this regard, the storage form of the correspondence in the present application is not limited.

[0013] In addition, the embodiment can be used in any one of the first sterilization mode or the second sterilization mode.

[0014] In the embodiment, the air conditioning system stores a correspondence between each temperature and each humidity of the indoor environment and a sterilization duration. Based on the correspondence, the current sterilization duration can be determined based on the current temperature of the indoor environment and the first current humidity of the indoor environment. Further, the stop sterilization time is determined according to the start time of the sterilization mode. For example, the sum of the current sterilization duration and the start time is determined as the stop sterilization time. The above embodiment provides an implementation of determining the stop sterilization time by using the sterilization duration in combination with the temperature and humidity of the indoor environment, which is simple in logic and easy to implement.

[0015] In some embodiments, the controller is configured to determine the current sterilization duration corresponding to the current temperature of the indoor environment and the first current humidity of the indoor environment according to the correspondence between the temperature and humidity of the indoor environment and the sterilization duration, including: determining the current sterilization intensity corresponding to the current temperature of the indoor environment and the first current humidity of the indoor environment according to the correspondence between the temperature and humidity of the indoor environment and the sterilization intensity; and determining the sterilization duration corresponding to the current sterilization intensity as the current sterilization duration according to the correspondence between the sterilization intensity and the sterilization duration.

[0016] It should be noted that the correspondence between the temperature and humidity of the indoor environment and the sterilization intensity can be stored in the form of a data table or in the form of an algorithm formula. The storage form of the correspondence in the present application is not limited.

[0017] In addition, the embodiment can be used in any one of the first sterilization mode or the second sterilization mode. The sterilization intensity in the first sterilization mode is positively correlated with the speed of releasing unit heat energy in the first sterilization mode. The sterilization intensity in the second sterilization mode is positively correlated with the speed of releasing water ions in the second sterilization mode.

[0018] Based on the embodiment, the air conditioning system stores a correspondence between each temperature and each humidity of the indoor environment and a sterilization intensity. Based on the correspondence, the current sterilization intensity can be determined based on the current temperature of the indoor environment and the first current humidity of the indoor environment. Further, the current sterilization duration corresponding to the current sterilization intensity is determined according to the correspondence between the sterilization intensity and the sterilization duration. The above embodiment provides an implementation of determining the sterilization duration by using the sterilization intensity in combination with the temperature and humidity of the indoor environment, which is simple in logic and easy to implement.

[0019] In some embodiments, when the air conditioning system is running in the second sterilization mode, the controller is configured to determine the stop sterilization time corresponding to the current temperature of the indoor environment and the first current humidity of the indoor environment according to the correspondence between the temperature and humidity of the indoor environment and the sterilization duration, including: determining the current sterilization intensity corresponding to the current temperature of the indoor environment and the first current humidity of the indoor environment according to the correspondence between the temperature and humidity of the indoor environment and the sterilization intensity of the second sterilization mode; controlling the air conditioning system to run the second sterilization mode at the current sterilization intensity; determining the time when the humidity of the indoor environment reaches the first humidity threshold as the stop sterilization time.

[0020] In the second sterilization mode, the sterilization duration is positively correlated with the first humidity threshold. It can be understood that under the same sterilization intensity, the greater the first humidity threshold, the longer the sterilization duration, that is, the later the stop sterilization time. Therefore, the first humidity threshold can be determined according to the current sterilization intensity, or it can be determined according to the current sterilization intensity and the current sterilization duration, which is not specifically limited in the present application.

[0021] In this embodiment, in the scenario of running the second sterilization mode, the correspondence between the temperature and humidity of the indoor environment and the sterilization intensity of the second sterilization mode is used to determine the current sterilization intensity, and then the stop sterilization time is determined according to the current sterilization intensity and the humidity of the indoor environment in the second sterilization mode.

[0022] In some embodiments, after the controller is configured to exit the sterilization working mode when the running time in the sterilization working mode reaches the stop sterilization time, it further includes: obtaining a second current humidity of the indoor environment; when the second current humidity is greater than or equal to a second humidity threshold, starting a dehumidification mode, and the air conditioning system can reduce the humidity of the indoor environment when running in the dehumidification mode.

[0023] In the second sterilization mode, the sterilization duration is positively correlated with the first humidity threshold. It can be understood that under the same sterilization intensity, the greater the first humidity threshold, the longer the sterilization duration, that is, the later the stop sterilization time. Therefore, the first humidity threshold can be determined according to the current sterilization intensity, or it can be determined according to the current sterilization intensity and the current sterilization duration, which is not specifically limited in the present application.

[0024] Based on the scenario after completing the sterilization mode, the second current humidity of the indoor environment is reacquired after exiting the sterilization mode. When the second current humidity is greater than or equal to the second humidity threshold, it indicates that the second current humidity of the indoor environment is unreasonable, and then the dehumidification mode is started to reduce the humidity of the indoor environment and keep the humidity of the indoor environment in a reasonable range. Based on this, on the one hand, the longer the indoor environment after sterilization maintains a safe state, the longer the indoor environment after sterilization is destroyed, and the faster the speed of bacterial growth in the indoor environment caused by excessive humidity is avoided, and the problem of the indoor environment being destroyed faster is avoided. On the other hand, too much humidity is not conducive to the user experience of the indoor user, so when it is greater than or equal to the second humidity threshold, the dehumidification mode is started to ensure reasonable indoor humidity and improve user experience.

[0025] In some embodiments, the controller is further configured to perform: after starting the dehumidification mode, acquiring a third current humidity of the indoor environment; and when the third current humidity is less than a third humidity threshold, stopping the dehumidification mode, the third humidity threshold being less than the second humidity threshold.

[0026] The third humidity threshold is set too small, which makes the indoor environment too dry, which is not conducive to the comfort of the indoor environment. The third humidity threshold is set too large, which makes the indoor environment too humid, and causes the speed of bacterial growth to be too fast. Therefore, the third humidity threshold can be determined according to the humidity or dryness required by the user; it can also be determined according to the reasonable speed of bacterial growth; it can also be determined according to the humidity or dryness required by the user and the reasonable speed of bacterial growth, so as to comprehensively consider the influence of the humidity or dryness required by the user and the reasonable speed of bacterial growth.

[0027] Based on this, after the air conditioning system enters the dehumidification mode, if the third current humidity of the indoor environment reaches the third humidity threshold, continuing to run the dehumidification mode will continue to reduce the humidity of the indoor environment, thereby making the indoor environment too dry and reducing the user experience of the indoor user. Therefore, when the third current humidity is less than the third humidity threshold, the air conditioning system is controlled to exit the dehumidification mode, so that the humidity of the indoor environment is in a reasonable humidity range, and the comfort of the user using the air conditioning system is increased.

[0028] In some embodiments, the controller is further configured to: when the cumulative running time length of the air conditioning system is greater than or equal to a cumulative running time length threshold, clear the cumulative running time length.

[0029] It should be noted that the cumulative running time threshold refers to the maximum value that the cumulative running time of the air conditioning system is allowed to reach, that is, after the cumulative running time of the air conditioning system reaches the cumulative running time threshold, the air conditioning system stops continuing to accumulate the running time. It can be understood that reaching the cumulative running time threshold is one running time accumulation period, and every other running time accumulation period, the cumulative running time is accumulated again.

[0030] In this embodiment, when the cumulative running time of the air conditioning system reaches the cumulative running time threshold, it indicates that the air conditioning system has completed a running time accumulation period, and the cumulative running time is cleared to enter the next running time accumulation period to start calculating the cumulative running time again, so as to control the air conditioning system to enter the opening determination process of the sterilization working mode again, thereby realizing the frequency control of opening the sterilization working mode, and avoiding the problem that the cumulative running time is not cleared, and after the cumulative actual running time reaches the running time threshold, the cumulative running time will always be greater than the running time threshold, and the frequency of opening the sterilization working mode is out of control.

[0031] In some embodiments, the air conditioning system further comprises: a water ion sterilization device connected to the controller; when the air conditioning system is in the first sterilization mode, the outdoor heat exchanger is controlled to work as an evaporator, the indoor heat exchanger is controlled to work as a condenser, and the water ion sterilization device is controlled to be in a closed state; when the air conditioning system is in the second sterilization mode, the outdoor heat exchanger is controlled to work as a condenser, the indoor heat exchanger is controlled to work as an evaporator, and the water ion sterilization device is controlled to be in an open state.

[0032] In this way, the first sterilization mode based on high-temperature sterilization is adapted to the working principle of the indoor heat exchanger as a condenser to ensure the feasibility and rapidity of the first sterilization mode. At the same time, the second sterilization mode based on water ion sterilization is adapted to the working principle of the indoor heat exchanger as an evaporator to ensure the feasibility and rapidity of the second sterilization mode of the water ion sterilization device.

[0033] In a second aspect, a control method of an air conditioning system is provided, the method comprising: starting a sterilization working mode of the air conditioning system when a cumulative running time of the air conditioning system is greater than or equal to a running time threshold, or when a time interval between a last start time and a previous start time of the air conditioning system is greater than or equal to a time interval threshold; determining a stop sterilization time corresponding to a current temperature of an indoor environment and a first current humidity of the indoor environment according to a corresponding relationship between the temperature and humidity of the indoor environment and a sterilization time; and exiting the sterilization working mode at the stop sterilization time.

[0034] In a third aspect, the embodiments of the present application provide a computer readable storage medium, which stores instructions. When the instructions are run on any of the above devices, the device executes the control method of any of the above air conditioning systems.

[0035] In a fourth aspect, the embodiments of the present application provide a chip, which comprises a processor and a memory. The memory is used to store computer execution instructions. When the chip is running, the processor executes the computer execution instructions stored in the memory, so that the chip executes the control method of any of the above air conditioning systems.

[0036] In a fifth aspect, the embodiments of the present application provide a computer program product comprising instructions, which, when run on any of the above devices, cause the device to execute the control method of any of the above air conditioning systems.

[0037] In the embodiments of the present application, the names of the components of the above device do not constitute a limitation on the device itself. In actual implementation, these components can appear in other names. As long as the functions of the components are similar to those in the embodiments of the present application, they belong to the scope of the claims of the present application and equivalent technologies.

[0038] In addition, the technical effects brought by any of the design methods in the second aspect to the fifth aspect can be referred to the technical effects brought by the different design methods in the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 A structural schematic diagram of an air conditioning system provided by the embodiments of the present application;

[0040] Figure 2 A circuit system architecture diagram of an air conditioning system provided by the embodiments of the present application;

[0041] Figure 3 A flowchart of a control method of an air conditioning system provided by the embodiments of the present application;

[0042] Figure 4 A flowchart of a control method of an air conditioning system provided by the embodiments of the present application;

[0043] Figure 5 A flowchart of a control method of an air conditioning system provided by the embodiments of the present application;

[0044] Figure 6 A flowchart of a control method of an air conditioning system provided by the embodiments of the present application;

[0045] Figure 7 A flowchart of a control method of an air conditioning system provided by the embodiments of the present application;

[0046] Figure 8 A flow chart of another control method of an air conditioning system according to an embodiment of the present application is provided;

[0047] Figure 9 A flow chart of another control method of an air conditioning system according to an embodiment of the present application is provided;

[0048] Figure 10 A flow chart of another control method of an air conditioning system according to an embodiment of the present application is provided;

[0049] Figure 11 A hardware structure schematic diagram of a controller according to an embodiment of the present application is provided. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be clearly and completely described in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0051] The terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0052] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or detachably connected, or integrally connected. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, when describing the pipeline, the "connected" and "connected" used in the present application have the meaning of conducting. The specific meaning should be understood in combination with the context.

[0053] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design presented as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or advantageous than other embodiments or design solutions. Rather, the use of "exemplary" or "for example" is intended to present relevant concepts in a specific manner. The words "exemplary" and "for example" are used interchangeably in the embodiments of the present application.

[0054] To meet the growing needs of people, air conditioning equipment with more and more function modes, such as sterilization mode and dehumidification mode. Many function modes of start and exit are dependent on the user's manual control.

[0055] In the related art, the start time of the air conditioning equipment entering the sterilization mode and the exit time of the air conditioning equipment exiting the sterilization mode are both manually controlled by the user. The above-mentioned user manually determines the start time of entering the sterilization mode and the exit time of exiting the sterilization mode, which often causes unreasonable start time or exit time, such as, too late start time will cause the unsuitable indoor environment cannot be improved in time; or too late exit time will cause excessive dehumidification or excessive sterilization of the indoor environment, resulting in resource waste and unsuitable indoor environment. Therefore, how to intelligently and accurately determine the start time and stop time of running the sterilization mode is a problem to be solved.

[0056] Therefore, the embodiments of the present application provide an air conditioning system. When the cumulative running time of the air conditioning system reaches or exceeds the running time threshold, the number of bacteria breeding in the indoor environment may exceed the first preset number of bacteria. Therefore, when the cumulative running time reaches or exceeds the running time threshold, the existing running mode is accurately and timely switched to the sterilization mode to sterilize the bacteria breeding in the indoor environment, thereby reducing the number of bacteria breeding in the indoor environment and ensuring the cleanliness and safety of the indoor environment. In addition, when the time interval between the start time of the air conditioning system and the start time of the last time is greater than or equal to the time interval threshold, the number of bacteria breeding in the device of the air conditioning system may exceed the second preset number of bacteria. Therefore, when the time interval between the start time of the air conditioning system and the start time of the last time is greater than or equal to the time interval threshold, the sterilization mode is started when the air conditioning system is started to reduce the number of bacteria breeding in the indoor environment and ensure the hygiene and safety of the indoor environment.

[0057] Based on the embodiment, the controller of the air conditioning system can flexibly determine the start time of the sterilization mode according to the accumulated running time of the current running or the start time of the current running and the start time of the last running, that is, intelligently determine the start time of sterilizing the bacteria breeding in the indoor environment, so as to ensure the rationality of the start time of the sterilization mode. Further, according to the current temperature and the current humidity of the indoor environment, the stop sterilization time of the sterilization mode is determined to ensure the rationality of the stop sterilization time, thereby avoiding the problems of resource waste caused by too much resource consumption for sterilization due to too long sterilization mode and the problem of poor sterilization effect caused by too short sterilization mode. In this way, the air conditioning system can reasonably control the start time of the sterilization mode and the stop sterilization time of the sterilization mode, so as to ensure that the air conditioning system can safely and effectively sterilize the indoor environment.

[0058] In the embodiments of the present application, the air conditioning system can be a multi-split air conditioning system and a single-machine air conditioning system, etc. The multi-split air conditioning system includes one outdoor unit and multiple indoor units, and the single-machine air conditioning system includes one outdoor unit corresponding to one indoor unit. To further describe the scheme of the present application, the structure of an air conditioning system provided by the embodiments of the present application will be introduced below taking the single-machine air conditioning system as an example.

[0059] Reference Figure 1 and Figure 2 The air conditioning system 100 can include an outdoor unit 200, an indoor unit 300, and a controller 103. The outdoor unit 200 includes an outdoor heat exchanger 201, a compressor 202, a four-way valve 203, a bypass shut-off valve 204, an outdoor electromagnetic valve 205, and an outdoor throttling device 206.

[0060] In some embodiments, the outdoor unit further includes an outdoor liquid pipe temperature sensor 207.

[0061] In some embodiments, the compressor 202, the four-way valve 203, the outdoor heat exchanger 201 in the outdoor unit 200, and the indoor expansion valve, the indoor heat exchanger, and the circulation branch electromagnetic valve in each indoor unit are connected in sequence through a pipeline to form a refrigerant circulation loop.

[0062] In some embodiments, one end of the outdoor heat exchanger 201 is connected to the compressor 202 through the four-way valve 203, and the other end is connected to the indoor heat exchanger. The outdoor heat exchanger 201 is used for heat exchange between the refrigerant flowing in the heat transfer pipe of the outdoor heat exchanger 201 and outdoor air.

[0063] In some embodiments, the compressor 202 is arranged between the indoor heat exchanger and the outdoor heat exchanger 201, and is configured to provide power for the refrigerant circulation. In the cooling mode, for example, the compressor 202 delivers the compressed refrigerant to the outdoor heat exchanger 201 through the four-way valve 203. Optionally, the compressor 202 can be an inverter compressor 202 with variable capacity based on the speed control of the inverter.

[0064] In some embodiments, the four ports of the four-way valve 203 are respectively connected to the discharge port of the compressor 202, the outdoor heat exchanger 201, the suction port of the compressor 202, and the indoor heat exchanger of each indoor unit. The four-way valve 203 is configured to realize the mutual conversion between the cooling mode and the heating mode by changing the flow direction of the refrigerant in the system pipeline.

[0065] In some embodiments, the bypass shut-off valve 204 is arranged between the four-way valve 203 and the indoor heat exchanger of each indoor unit, and remains open after the installation of the air conditioning system.

[0066] In some embodiments, the outdoor electromagnetic valve 205 is arranged on the refrigerant bypass branch between the four-way valve 203 and the indoor heat exchanger of each indoor unit, and is configured to control the communication and cutoff of the refrigerant bypass branch.

[0067] In some embodiments, the outdoor throttling device 206 is arranged between the outdoor electromagnetic valve 205 and the compressor 202, and is configured to reduce the pressure of the high-temperature and high-pressure refrigerant delivered by the discharge port of the compressor. For example, the outdoor throttling device 206 can include an electronic expansion valve and / or a capillary tube. Optionally, the outdoor throttling device 206 can also be arranged between the outdoor electromagnetic valve 205 and the bypass shut-off valve 204. Optionally, the outdoor throttling device 206 can also be arranged between the bypass shut-off valve 204 and each indoor unit. The present application does not limit this.

[0068] In some embodiments, the outdoor unit 200 further comprises an outdoor fan (not shown in the figure), which generates an air flow of outdoor air through the outdoor heat exchanger 201 to promote the heat exchange between the refrigerant flowing in the heat transfer pipe of the outdoor heat exchanger 201 and the outdoor air.

[0069] In some embodiments, the outdoor unit 200 further comprises an outdoor fan motor (not shown in the figure) connected to the outdoor fan, and configured to drive or change the rotating speed of the outdoor fan.

[0070] In some embodiments, the outdoor unit 200 further comprises a high-pressure pressure switch (not shown in the figure) electrically connected to the controller 103, and configured to monitor the pressure of the air conditioning pipeline. When the pipeline pressure of the air conditioning system 100 is abnormal, the high-pressure pressure switch sends an abnormal information to the controller 103, so that the controller 103 controls the system to stop running, thereby ensuring the normal operation of the air conditioning system 100.

[0071] Further, the indoor unit 300 comprises an indoor heat exchanger 301, an indoor expansion valve 302, a bypass branch solenoid valve 303, and a circulation branch solenoid valve 304.

[0072] In some embodiments, the indoor unit 300 further comprises an indoor liquid pipe temperature sensor 305 and an indoor fan 306.

[0073] In some embodiments, the discharge port of the compressor 202 in the outdoor unit 200, the outdoor throttling device 206, the outdoor solenoid valve 205, the bypass shut-off valve 204, and the bypass branch solenoid valve in the indoor unit, the indoor heat exchanger are connected in sequence through pipes to form a refrigerant bypass branch.

[0074] In some embodiments, the indoor heat exchanger 301 is configured to exchange heat between the refrigerant flowing in the heat transfer pipe of the indoor heat exchanger 301 and the indoor air.

[0075] In some embodiments, the indoor expansion valve 302 is arranged between the indoor heat exchanger 301 and the outdoor heat exchanger 201, has the function of expanding and reducing the pressure of the refrigerant flowing through the electronic expansion valve, and can be used to adjust the supply amount of the refrigerant in the pipeline. Optionally, the air conditioning system 100 can be provided with multiple electronic expansion valves. If the opening degree of the electronic expansion valve is reduced, the flow path resistance of the refrigerant passing through the electronic expansion valve increases. If the opening degree of the electronic expansion valve is increased, the flow path resistance of the refrigerant passing through the electronic expansion valve decreases. In this way, even if the state of other devices in the circuit does not change, when the opening degree of the electronic expansion valve changes, the refrigerant flow to the indoor heat exchanger 301 or the outdoor heat exchanger 201 will also change. It should be noted that, Figure 1 The number of electronic expansion valves shown is only an example, which is not limited in the present application.

[0076] In some embodiments, the bypass branch solenoid valve 303 is arranged between the indoor heat exchanger 301 and the four-way valve 203, and is used to control the communication and cutoff of the refrigerant bypass branch of a single indoor unit. It should be understood that the bypass branch solenoid valve 303 can also be arranged between the bypass shut-off valve 204 and the four-way valve 203, or between the indoor heat exchanger 301 and the four-way valve 203, as long as it is arranged on the total branch of the bypass refrigerant branch of each indoor unit, which is not limited in the present application.

[0077] In some embodiments, the circulation branch solenoid valve 304 is arranged between the indoor heat exchanger 301 and the four-way valve 203, and is used to control the communication and cutoff of the refrigerant circulation branch of a single indoor unit.

[0078] In some embodiments, the indoor liquid pipe temperature sensor 301 is arranged on the liquid pipe of the indoor heat exchanger 301, and is used to detect the liquid pipe temperature of the indoor heat exchanger 301.

[0079] In some embodiments, the indoor fan 306 generates an airflow of the indoor air through the indoor heat exchanger 301 to facilitate heat exchange between the refrigerant flowing in the heat transfer tubes of the indoor heat exchanger 301 and the indoor air.

[0080] In some embodiments, the indoor unit 300 further comprises an indoor fan motor (not shown in the figure) connected with the indoor fan for driving or changing the rotating speed of the indoor fan.

[0081] In some embodiments, the indoor unit 300 further comprises a plurality of capillary tubes (not shown in the figure) for reducing the pressure of the refrigerant in the pipeline and delivering the high-pressure refrigerant delivered by the condenser to the evaporator after pressure reduction.

[0082] In some embodiments, the indoor unit 300 further comprises a humidity sensor (not shown in the figure) for detecting the relative humidity of the indoor air.

[0083] In some embodiments, the indoor unit 300 further comprises a dew point meter (not shown in the figure) for detecting the ambient dew point temperature near the indoor heat exchanger.

[0084] In some embodiments, the indoor unit 300 further comprises a display 102. The display 102 is electrically connected with the controller 103. Optionally, the display 102 is used as a control panel of the air conditioning system 100, for example, the display 102 can be used to display the indoor temperature or the current operation mode. Optionally, the display 102 is connected with the controller 103, and the user can perform operations on the control panel and set programs through the display 102. Optionally, the display 102 further comprises a pressure sensor or a temperature sensor, and the display 102 can transmit the user's instructions to the controller according to the user's gesture operations, such as pressing the keys, to realize the human-computer interaction function. Optionally, the display 102 can be a liquid crystal display 102 or an organic light-emitting diode (OLED) display 102. The specific type, size, resolution and the like of the display 102 are not limited, and those skilled in the art can understand that the display 102 can be changed in performance and configuration according to the needs.

[0085] In some embodiments, the controller 103 refers to a device that can generate operation control signals according to instruction operation codes and timing signals, and instruct the air conditioning system 100 to execute control instructions. For example, the controller 103 can be a central processing unit (CPU), a general processor network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The controller 103 can also be other devices with processing functions, such as circuits, devices, or software modules, and the embodiments of the present application do not make any limitation thereto.

[0086] Although Figure 1 Not shown, the air conditioning system 100 can also include a power supply device (such as a battery and a power management chip) for powering various components. The battery can be connected to the controller logic through the power management chip, so as to realize the power consumption management and other functions of the air conditioning system 100 through the power supply device.

[0087] Figure 2 An exemplary circuit system architecture diagram of the air conditioning system 100 is shown.

[0088] As Figure 2 shown, the air conditioning system 100 can also include a water ion sterilization device 101, a warning device 104, a communication device 105, a human-computer interaction device 106, and a power supply 107.

[0089] Among them, the water ion sterilization device 101, the warning device 104, the communication device 105, the human-computer interaction device 106, and the power supply 107 are connected with the controller 103.

[0090] In some embodiments, when the air conditioning system 100 is in the first sterilization mode, the outdoor heat exchanger 201 is controlled to work as an evaporator, the indoor heat exchanger 301 is controlled to work as a condenser, and the water ion sterilization device is controlled to be in the off state; when the air conditioning system is in the second sterilization mode, the outdoor heat exchanger 201 is controlled to work as a condenser, the indoor heat exchanger 301 is controlled to work as an evaporator, and the water ion sterilization device 101 is controlled to be in the on state. In this way, the first sterilization mode based on high-temperature sterilization is adapted to the working principle of the indoor heat exchanger 301 as a condenser to ensure the feasibility and rapidity of achieving the first sterilization mode. At the same time, the second sterilization mode based on water ion sterilization is adapted to the working principle of the indoor heat exchanger 301 as an evaporator to ensure the feasibility and rapidity of the water ion sterilization device to achieve the second sterilization mode. In some embodiments, the warning device 104 is used to prompt the indoor user of the current sterilization mode when the air conditioning system enters or exits the sterilization mode, so as to reduce the misoperation of the indoor user in adjusting the working mode.

[0091] In some embodiments, the communication device 105 is a component for communicating with external devices or external servers according to various communication protocol types. For example, the communication device can include at least one of a Wi-Fi chip, a Bluetooth communication protocol chip, a wired Ethernet communication protocol chip, other network communication protocol chips or near field communication protocol chips, and an infrared receiver.

[0092] In some embodiments, the air conditioning system 100 can transmit control signals and data signals between the terminal device used by the user (such as a mobile phone, a tablet computer, a wearable mobile device, etc.), other home devices (such as an air conditioner, a monitoring device, etc.), and a server through the communication device 105. For example, the user issues an instruction indicating to start the working mode (such as starting the heating mode, the cooling mode, or the dehumidification mode or the sterilization working mode) through the mobile phone, the air conditioning system 100 receives the instruction through the communication device 105, and the controller 103 of the air conditioning system 100 starts the corresponding working mode in response to the instruction indicating to start the working mode.

[0093] In some embodiments, the human-computer interaction device 106 is used to realize the interaction between the user and the air conditioning system 100. The human-computer interaction device 106 can include one or more of a physical key, a touch display panel, or a voice recognition device. For example, the user can start the air conditioning system 100 to work through the human-computer interaction device 106, and can also set the running program of the air conditioning system 100 through the human-computer interaction device 106.

[0094] In some embodiments, the power supply 107 provides power supply support for the air conditioning system 100 under the control of the controller 103.

[0095] Based on the above air conditioning system, as shown in Figure 3 The embodiment of the application provides a control method of an air conditioning system, which comprises the following steps:

[0096] Step S101, when the cumulative running time length of the air conditioning system is greater than or equal to a running time length threshold, or when the time interval between the last start time and the previous start time of the air conditioning system is greater than or equal to a time interval threshold, the sterilization working mode of the air conditioning system is started.

[0097] It should be noted that the air in the indoor environment is internally circulated when the air conditioning system is running. During the internal circulation of the air conditioning system, bacteria are easily bred in the indoor environment, and the longer the running time is, the more bacteria are bred in the indoor environment. In addition, when the air conditioning system is not started for a long time, i.e., the air conditioning system is not running for a long time, a large number of bacteria are also bred in the device of the air conditioning system, and the longer the time of not starting is, the more bacteria are bred in the device of the air conditioning system, i.e., the longer the time interval between two start times is, the more bacteria are bred in the device of the air conditioning system.

[0098] The running time length threshold is the running time length of the air conditioning system when the content of the air bacteria in the indoor environment reaches the first preset bacteria quantity after the air conditioning system is running. The first preset bacteria quantity is a critical value between the bacteria quantity in the indoor environment which affects the health of the indoor user and the bacteria quantity in the indoor environment which does not affect the health of the indoor user. Exemplarily, the running time length threshold is positively correlated with the first preset bacteria quantity, wherein the first preset bacteria quantity is positively correlated with the area of the indoor environment. The first preset bacteria quantity can be set according to the user demand, or can be configured in the air conditioning system according to the experience value or algorithm of the person skilled in the art, or can be determined according to the indoor environment, and based on this, the running time length threshold can be set according to the user demand, or can be configured in the air conditioning system according to the experience value or algorithm of the person skilled in the art, or can be determined according to the indoor environment. Therefore, the specific implementation mode of the running time length threshold is not limited in the application.

[0099] In addition, the time interval threshold is a time length when the amount of bacteria bred in the air conditioning system itself reaches a second preset amount of bacteria in a case where the air conditioning system does not operate. The second preset amount of bacteria is a critical value between an amount of bacteria that affects the health of indoor users and an amount of bacteria that does not affect the health of indoor users. For example, the time interval threshold is positively correlated with the second preset amount of bacteria. The second preset amount of bacteria can be set according to user demand, or can be configured in the air conditioning system according to experience values or algorithms by a person skilled in the art, or can be determined according to an indoor environment. Therefore, the specific implementation of the time interval threshold is not limited.

[0100] Through the step 101, when the cumulative operating time of the air conditioning system in this operation reaches or exceeds the operating time threshold, the amount of bacteria bred in the indoor environment may exceed the first preset amount of bacteria. Therefore, when the cumulative operating time reaches or exceeds the operating time threshold, the existing operating mode is accurately and timely switched to the sterilization operating mode to sterilize the bacteria that may be bred in the indoor environment, thereby reducing the amount of bacteria bred in the indoor environment and ensuring the cleanliness and safety of the indoor environment. In addition, when the time interval between the start time of the air conditioning system in this operation (i.e., the most recent operation) and the start time of the last operation is greater than or equal to the time interval threshold, the amount of bacteria bred in the air conditioning system itself may exceed the second preset amount of bacteria. Therefore, when the time interval between the start time of the air conditioning system in this operation and the start time of the last operation is greater than or equal to the time interval threshold, the sterilization operating mode is started when the air conditioning system is started in this operation, so as to reduce the amount of bacteria bred in the indoor environment and ensure the hygiene and safety of the indoor environment.

[0101] In step S102, the stop sterilization time corresponding to the first current humidity of the indoor environment is determined according to the correspondence between the temperature and humidity of the indoor environment and the sterilization time length.

[0102] Considering the influence of the temperature and humidity of the indoor environment on the stop sterilization time, the stop sterilization time corresponding to the first current humidity is determined according to the correspondence between the temperature and humidity of the indoor environment and the sterilization time length in the air conditioning system, so as to ensure that the stop sterilization time is adapted to the temperature and humidity of the indoor environment.

[0103] In step S103, the sterilization operating mode is exited at the stop sterilization time.

[0104] Figure 3The technical solutions shown at least bring the following beneficial effects: the controller of the air conditioning system can flexibly determine the starting time of the sterilization working mode according to the accumulated running time of the current running or the starting time of the current running and the starting time of the last running, that is, intelligently and flexibly determine the starting time of sterilizing the bacteria breeding in the indoor environment, so as to ensure the rationality of the starting time of the sterilization working mode. Further, according to the current temperature and the current humidity of the indoor environment, the stopping sterilization time of the sterilization working mode is determined, so that the stopping sterilization time is adapted to the current temperature and the current humidity, and the rationality of the stopping sterilization time is ensured, thereby avoiding the problems of resource waste caused by too long sterilization mode and poor sterilization effect caused by too short sterilization mode. In this way, the air conditioning system can reasonably control the starting time of the sterilization working mode and the stopping sterilization time of the sterilization working mode, so as to ensure that the air conditioning system can safely and effectively sterilize the indoor environment.

[0105] In some embodiments, the sterilization working mode at least includes: a first sterilization mode and a second sterilization mode, the air conditioning system can perform high-temperature sterilization on the air in the indoor environment when the air conditioning system runs in the first sterilization mode; the air conditioning system can convert water molecules in the indoor environment into water ions with sterilization function when the air conditioning system runs in the second sterilization mode.

[0106] Based on this embodiment, when the air conditioning system has been in the running mode, the controller of the air conditioning system can determine the sterilization working mode matched with the current running mode according to the current running mode of the air conditioning system.

[0107] As a possible implementation manner, as shown in the figure, Figure 4 In the step S101, the controller starts the sterilization working mode of the air conditioning system when the accumulated running time of the air conditioning system is greater than or equal to the running time threshold, and the specific implementation is as follows:

[0108] Step S201: acquiring the accumulated running time of the air conditioning system and the current running mode of the air conditioning system; when the accumulated running time is greater than or equal to the running time threshold and the current running mode is in the heating running mode, starting the first sterilization mode.

[0109] When the current operation mode is in the heating operation mode, the indoor heat exchanger is used to heat the indoor environment to increase the indoor environment temperature, and the indoor environment temperature is high in the heating operation mode, so when the first sterilization mode is used, the indoor environment temperature can be directly increased to a certain temperature that can produce a sterilization effect by continuously increasing the heating temperature to be reached by the indoor environment. Therefore, in the heating operation mode, the first sterilization mode based on high-temperature sterilization is used, which effectively utilizes the relatively high indoor temperature in the heating mode, which is conducive to improving the sterilization speed, and in the heating mode, the amount of water molecules in the indoor environment is small, and if the second sterilization mode based on water ion sterilization is used, the generated water ions will be small, which is also not conducive to the sterilization effect.

[0110] In step S202, when the cumulative operation time is greater than or equal to the operation time threshold and the current operation mode is in the cooling operation mode, the second sterilization mode is started.

[0111] When the current operation mode is in the cooling operation mode, the indoor heat exchanger is used to cool the indoor environment to reduce the indoor environment temperature, and the water content in the indoor environment is relatively high in the cooling operation mode, so when the second sterilization mode is used, more water ions are generated, which is more conducive to the sterilization effect.

[0112] In this implementation mode, based on the scenario in which the air conditioning system has been running, the cumulative operation time of the current operation is considered, and the current operation mode of the air conditioning system is combined to determine the sterilization working mode that is adapted to the current operation mode, so as to ensure the sterilization effect.

[0113] Based on the above embodiments, the following describes two implementation modes for determining when to stop sterilization in combination with the sterilization working mode of the air conditioning system.

[0114] As a possible implementation mode, as shown in Figure 5 The above step S102 can be specifically implemented as the following steps:

[0115] In step S12A, according to the corresponding relationship between the temperature and humidity of the indoor environment and the sterilization time, the current sterilization time corresponding to the current temperature of the indoor environment and the first current humidity of the indoor environment is determined.

[0116] For example, according to the current temperature Tn and the first current humidity RHn of the indoor environment obtained by the air conditioning system, the air conditioning system automatically determines different sterilization time T0. For example, the different sterilization time division criteria can be as follows: when Tn≤10℃, 38%≤RHn≤65%, T0=16h; when Tn≤10℃, RHn≥65% or RHn≤38%, T0=12h; when 10

[0117] In step S12B, the stop sterilization time is determined according to the start time of the sterilization mode and the current sterilization time.

[0118] It should be noted that the correspondence between the temperature and humidity of the indoor environment and the sterilization time can be stored in the form of a data table, or can be stored in the form of an algorithm formula. The storage form of the correspondence in the present application is not specifically limited.

[0119] In addition, the implementation mode can be used for any one of the first sterilization mode or the second sterilization mode.

[0120] In this embodiment, the air conditioning system stores the correspondence between each temperature and each humidity of the indoor environment and the sterilization time. Based on the correspondence, the current sterilization time can be determined under the condition that the current temperature of the indoor environment and the first current humidity of the indoor environment are determined. Further, the stop sterilization time is determined according to the start time of the sterilization mode.

[0121] For example, the sum of the current sterilization time and the start time is determined as the stop sterilization time.

[0122] The above implementation mode provides an implementation mode of determining the stop sterilization time by using the sterilization time in combination with the temperature and humidity of the indoor environment, which is simple in logic and easy to implement.

[0123] As another possible implementation mode, as shown in Figure 6 The above step S102 can be specifically implemented as the following steps:

[0124] In step S102A, the current sterilization intensity corresponding to the current temperature of the indoor environment and the first current humidity of the indoor environment is determined according to the correspondence between the temperature and humidity of the indoor environment and the sterilization intensity of the second sterilization mode.

[0125] Step S102B, controlling the air conditioning system to run the second sterilization mode at the current sterilization intensity;

[0126] Step S102C, determining the time when the humidity of the indoor environment reaches the first humidity threshold as the sterilization stopping time.

[0127] It should be noted that the implementation mode is applied to the scenario where the air conditioning system is running in the second sterilization mode.

[0128] Among them, the sterilization duration in the second sterilization mode is positively correlated with the first humidity threshold. It can be understood that under the same sterilization intensity, the greater the first humidity threshold, the longer the sterilization duration, that is, the later the sterilization stopping time. Exemplarily, the sterilization intensity in the second sterilization mode is positively correlated with the speed of releasing water ions in the second sterilization mode. Therefore, the first humidity threshold can be determined according to the current sterilization intensity, or can be determined according to the current sterilization intensity and the current sterilization duration at the same time, which is not limited by the present application.

[0129] In this embodiment, in the scenario where the air conditioning system is running in the second sterilization mode, the corresponding relationship between the temperature and humidity of the indoor environment and the sterilization intensity of the second sterilization mode is used to determine the current sterilization intensity, and then the humidity of the indoor environment in the second sterilization mode is determined according to the current sterilization intensity to determine the sterilization stopping time.

[0130] Further, as a possible implementation mode, as shown in Figure 7 The above step S12A can be specifically implemented as the following steps:

[0131] Step S701, determining the current sterilization intensity corresponding to the current temperature of the indoor environment and the first current humidity of the indoor environment according to the corresponding relationship between the temperature and humidity of the indoor environment and the sterilization intensity.

[0132] Exemplarily, according to the current temperature Tn and the first current humidity RHn value range of the indoor environment obtained by the air conditioning system, the air conditioning system automatically determines different sterilization intensities. For example, the different sterilization intensity grading standards can be as follows:

[0133] (1) When Tn≤10℃ and 38%<RHn<65%, the first sterilization intensity is executed.

[0134] (2) When 10<Tn≤20℃ and 38%<RHn<65%, the second sterilization intensity is executed.

[0135] (3) When 20℃<Tn or RHn≥65% or RHn≤38%, the third sterilization intensity is executed.

[0136] Step S702, determining the sterilization duration corresponding to the current sterilization intensity as the current sterilization duration according to the corresponding relationship between the sterilization intensity and the sterilization duration.

[0137] It should be noted that the relationship between indoor temperature and humidity and sterilization intensity can be stored in the form of a data table or an algorithmic formula. This application does not specify a particular storage format for this relationship.

[0138] Furthermore, this embodiment can be used in either the first sterilization mode or the second sterilization mode. The sterilization intensity in the first sterilization mode is positively correlated with the rate at which unit heat energy is released in the first sterilization mode. The sterilization intensity in the second sterilization mode is positively correlated with the rate at which water ions are released in the second sterilization mode.

[0139] Based on this implementation method, the air conditioning system stores the correspondence between various indoor temperatures and humidity levels and sterilization intensities. Based on this correspondence, given the current indoor temperature and humidity, the current sterilization intensity can also be determined. Furthermore, based on the correspondence between sterilization intensity and sterilization duration, the current sterilization duration corresponding to the current sterilization intensity is determined. The above embodiment provides an implementation method that combines indoor temperature and humidity, using sterilization intensity to determine sterilization duration; the logic is simple and easy to implement.

[0140] Based on the above embodiments, combined with Figure 1 ,like Figure 8 As shown, after the controller is configured to perform the above step S103, the following steps can also be performed.

[0141] Step S104: Obtain the second current humidity of the indoor environment.

[0142] Step S105: When the second current humidity is greater than or equal to the second humidity threshold, the dehumidification mode is turned on. When the air conditioning system is running in dehumidification mode, it can reduce the humidity of the indoor environment.

[0143] The second humidity threshold is related to the bacterial growth rate or the user's acceptance of the humidity value. Generally, the higher the humidity, the faster the bacteria grow. Therefore, the second humidity threshold can be a humidity threshold set according to user needs; it can also be a threshold set in the air conditioning system based on experience or a certain algorithm by those skilled in the art, such as when the air conditioning system is set at the factory; or it can be determined based on a reasonable bacterial growth rate. Therefore, this application does not specifically limit the method of setting the second humidity threshold.

[0144] Based on the scenario after completing the sterilization mode, the indoor humidity is re-acquired after exiting the sterilization mode; this is known as the second current humidity. If the second current humidity is greater than or equal to a second humidity threshold, it indicates that the indoor humidity is unreasonable. In this case, the dehumidification mode is activated to reduce the indoor humidity to a reasonable range. This ensures that the sterilized indoor environment remains safe for a longer period, extending the time before secondary damage occurs and preventing excessive humidity from causing rapid bacterial growth and subsequent environmental degradation. Furthermore, excessive humidity negatively impacts the user experience; therefore, activating the dehumidification mode when the humidity is greater than or equal to the second humidity threshold ensures reasonable indoor humidity and improves user experience.

[0145] Based on the above embodiments, combined with Figure 1 and Figure 8 ,like Figure 9 As shown, after the controller is configured to perform step S105 as described above, the following steps can also be performed.

[0146] Step S106: After turning on the dehumidification mode, obtain the third current humidity of the indoor environment.

[0147] Step S107: When the current humidity is less than the third humidity threshold, stop the dehumidification mode. The third humidity threshold is less than the second humidity threshold.

[0148] Setting the third humidity threshold too low will make the indoor environment too dry, which is detrimental to indoor comfort. Conversely, setting it too high will make the indoor environment too humid, leading to excessive bacterial growth. Therefore, the third humidity threshold can be determined based on the user's desired humidity or dryness level; it can also be determined based on a reasonable bacterial growth rate; or it can be determined by a combination of the user's desired humidity or dryness level and a reasonable bacterial growth rate, taking into account the impact of both.

[0149] Based on this, after the air conditioning system enters dehumidification mode, if the third current humidity of the indoor environment reaches the third humidity threshold, continuing to run the dehumidification mode will further reduce the humidity of the indoor environment, making the indoor environment too dry and reducing the user experience. Therefore, when the third current humidity is less than the third humidity threshold, the air conditioning system is controlled to exit dehumidification mode so that the indoor humidity is within a reasonable range, increasing the user's comfort when using the air conditioning system.

[0150] In some embodiments, the controller is further configured to reset the cumulative runtime to zero when the cumulative runtime of the air conditioning system is greater than or equal to a cumulative runtime threshold.

[0151] It should be noted that the cumulative running time threshold refers to the maximum value that the cumulative running time of the air conditioning system is allowed to reach, i.e., after the cumulative running time of the air conditioning system reaches the cumulative running time threshold, the air conditioning system stops continuing to accumulate the running time. It can be understood that the cumulative running time threshold is reached as a running time accumulation period, and the cumulative running time is accumulated once every other running time accumulation period.

[0152] For example, the frequency of starting the sterilization working mode is determined to correspond to a running time accumulation period. For example, a running time accumulation period is 5 hours, i.e., the cumulative running time threshold is 5 hours, and the running time threshold is 1 hour. If the air conditioning system runs for 8 hours, the 8 hours occupy two running time accumulation periods, i.e., the sterilization working mode is started once when the air conditioning system runs for 1 hour, and the cumulative running time is cleared when the air conditioning system runs for 5 hours. In the second running time accumulation period, the sterilization working mode is started again when the air conditioning system runs for 6 hours (i.e., the cumulative running time is 1 hour).

[0153] In this embodiment, when the cumulative running time of the air conditioning system reaches the cumulative running time threshold, it indicates that the air conditioning system has completed a running time accumulation period, the cumulative running time is cleared, and the next running time accumulation period is entered to start calculating the cumulative running time again to control the air conditioning system to enter the sterilization working mode again. The frequency of starting the sterilization working mode is controlled, and the problem of losing control of the frequency of starting the sterilization working mode due to the cumulative running time not being cleared is avoided. When the cumulative actual running time reaches the running time threshold, the cumulative running time will always be greater than the running time threshold, and the frequency of starting the sterilization working mode is out of control.

[0154] As shown in FIG. 1, as a specific implementation example, the entire control process of the air conditioning system is described as follows. Figure 10

[0155] Step S11, the air conditioning system is started.

[0156] Step S12, it is determined whether the sterilization working mode starting condition is met. If yes, go to step S14; if no, go to step S13.

[0157] Step S13, the air conditioning system is normally operated.

[0158] Step S14, it is determined whether it is in the heating mode. If yes, go to step S15; if no, go to step S16.

[0159] Step S15, the first sterilization mode is started.

[0160] Step S16, the second sterilization mode is started. ​

[0161] Step S17, judging the current temperature Tn and the first current humidity RHn range of the indoor environment, determining the sterilization intensity. Entering any one of step S18, step S19, step S20.

[0162] Step S18, starting the first sterilization intensity. When the execution time of starting the first sterilization intensity reaches the sterilization stop time corresponding to the first sterilization intensity, entering step S21.

[0163] Step S19, starting the second sterilization intensity. When the execution time of starting the second sterilization intensity reaches the sterilization stop time corresponding to the second sterilization intensity, entering step S21.

[0164] Step S20, starting the third sterilization intensity. When the execution time of starting the third sterilization intensity reaches the sterilization stop time corresponding to the third sterilization intensity, entering step S21.

[0165] Step S21, exiting the first sterilization mode.

[0166] Step S22, judging whether the current humidity of the indoor environment is greater than the second humidity threshold value. If yes, entering step S23; if no, entering step S16.

[0167] Step S23, starting the dehumidification mode.

[0168] Step S24, judging whether the current humidity of the indoor environment is greater than the third humidity threshold value. If yes, entering step S26; if no, entering step S25.

[0169] Step S25, continuing the dehumidification mode operation.

[0170] Step S26, exiting the dehumidification mode.

[0171] Step S27, the air conditioning system re-enters the normal operation.

[0172] Step S28, when the cumulative operation duration reaches the cumulative duration threshold value, clearing the cumulative operation duration.

[0173] It can be seen that the above mainly introduces the scheme provided by the embodiments of the present application from the perspective of method. In order to realize the above functions, the embodiments of the present application provide the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that the modules and algorithm steps of the examples described in combination with the embodiments disclosed in the present text can be realized in the form of hardware or the combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical scheme. Professional technicians can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0174] The embodiments of the present application can divide the functional modules of the controller according to the above method examples. For example, each functional module can be divided according to each function, or two or more functions can be integrated in one processing module. The above integrated module can be realized in the form of hardware or in the form of a software functional module. Optionally, the division of the modules in the embodiments of the present application is illustrative, and is only a logical functional division. In actual implementation, another division mode can be used.

[0175] The embodiments of the present application also provide a hardware structure diagram of a controller. As shown in Figure 11 The controller 103 includes a processor 401, and optionally includes a memory 402 and a communication interface 403 connected with the processor 401. The processor 401, the memory 402 and the communication interface 403 are connected through a bus 404.

[0176] The processor 401 can be a central processing unit (CPU), a general processor network processor (NP), a digital signal processing (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD) or any combination thereof. The processor 401 can also be any other device having a processing function, such as a circuit, a device or a software module. The processor 401 can also include multiple CPUs, and the processor 401 can be a single-CPU processor or a multi-CPU processor. The processor herein can refer to one or more devices, circuits or processing cores for processing data (for example, computer program instructions).

[0177] The memory 402 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, a magneto-optical disk storage, a magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, and the embodiments of the present application do not make any limitation on this. The memory 402 can exist independently or be integrated with the processor 401. The memory 402 can contain computer program code. The processor 401 is configured to execute the computer program code stored in the memory 402, so as to implement the control method provided by the embodiments of the present application.

[0178] The communication interface 403 can be configured to communicate with other devices or communication networks (such as Ethernet, a radio access network (RAN), a wireless local area network (WLAN), etc.). The communication interface 403 can be a module, a circuit, a transceiver or any device capable of realizing communication.

[0179] The bus 404 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 404 can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, Figure 11 Only one thick line is used in the figure, but it does not mean that there is only one bus or only one type of bus.

[0180] The embodiments of the present application also provide a computer readable storage medium, including computer execution instructions, when running on a computer, causing the computer to execute any one of the control methods of the air conditioning system provided by the above embodiments.

[0181] The embodiment of the present application further provides a computer program product comprising computer execution instructions, which, when executed on a computer, causes the computer to execute the control method of the air conditioning system provided by any of the above embodiments.

[0182] In the above embodiments, the implementation can be achieved by software, hardware, firmware or any combination thereof, entirely or partially. When implemented by using software, the implementation can be in the form of a computer program product, entirely or partially. The computer program product comprises one or more computer execution instructions. When the computer execution instructions are loaded and executed on a computer, the entire or partial process or function according to the embodiment of the present application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer execution instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer execution instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be accessed by a computer or data storage device such as one or more servers, data centers, etc. integrated with one or more media. The available medium can be a magnetic medium (for example, floppy disk, hard disk, magnetic tape), an optical medium (for example, DVD), or a semiconductor medium (for example, solid state disk (SSD)) and the like.

[0183] Although the present application is described herein in conjunction with various embodiments, those skilled in the art, with the benefit of the drawings, the disclosure and the appended claims, can understand and implement other variations of the disclosed embodiments in the implementation of the claimed application. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality. A single processor or other unit can implement several functions listed in the claims. Some measures are described in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0184] Although the present application has been described in connection with specific embodiments thereof, it will be evident that many modifications and changes can be made thereto without departing from the spirit and scope of the application. Accordingly, it is intended to cover all modifications and changes as fall within the true spirit and scope of the application, and it is intended to include all such modifications and changes in the scope of the claims and their equivalents. Obviously, many modifications and variations of this application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the claims and their equivalents, the application can be practiced otherwise than as specifically described.

[0185] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An air conditioning system, characterized in that, include: Outdoor unit, the outdoor unit including an outdoor heat exchanger; An indoor unit, the indoor unit including an indoor heat exchanger, the indoor heat exchanger being connected to the outdoor heat exchanger via a pipeline; Controller; the controller is connected to the indoor unit and the outdoor unit; The controller is configured to: When the cumulative runtime of the air conditioning system is greater than or equal to the runtime threshold, or when the time interval between the most recent start time and the previous start time of the air conditioning system is greater than or equal to the time interval threshold, the sterilization mode of the air conditioning system is activated. Based on the correspondence between indoor temperature and humidity and sterilization time, the sterilization stop time corresponding to the current indoor temperature and the first current humidity of the indoor environment is determined. Exit the sterilization working mode at the specified stop sterilization time; The sterilization working mode includes at least a first sterilization mode and a second sterilization mode. When the air conditioning system is running in the second sterilization mode, it can convert water molecules in the indoor environment into water ions with sterilization function. When the air conditioning system is operating in the second sterilization mode, the controller is configured to execute the step of determining the stop sterilization time corresponding to the current temperature and the first current humidity of the indoor environment based on the correspondence between the indoor environment temperature and humidity and the sterilization duration, including: Based on the correspondence between the temperature and humidity of the indoor environment and the sterilization intensity of the second sterilization mode, the current sterilization intensity corresponding to the current temperature and the first current humidity of the indoor environment is determined. Control the air conditioning system to operate the second sterilization mode at the current sterilization intensity; The time when the humidity of the indoor environment reaches a first humidity threshold is determined as the sterilization stop time.

2. The air conditioning system according to claim 1, characterized in that, When the air conditioning system is running in the first sterilization mode, it can sterilize the air in the indoor environment at high temperature. The controller is configured to activate the sterilization mode of the air conditioning system when the accumulated runtime of the air conditioning system is greater than or equal to a runtime threshold, including: Obtain the cumulative runtime of the air conditioning system and the current operating mode of the air conditioning system; When the cumulative runtime is greater than or equal to the runtime threshold, and the current operating mode is in the heating operating mode, the first sterilization mode is activated; When the cumulative runtime is greater than or equal to the runtime threshold, and the current operating mode is in the cooling operating mode, the second sterilization mode is activated.

3. The air conditioning system according to claim 2, characterized in that, The controller is configured to execute the step of determining the stop sterilization time corresponding to the current temperature and the first current humidity of the indoor environment based on the correspondence between the temperature and humidity of the indoor environment and the sterilization duration of the sterilization working mode, including: Based on the correspondence between the indoor environment's temperature and humidity and the sterilization duration, the current sterilization duration corresponding to the current indoor environment's current temperature and the first current humidity is determined; based on the start time of the sterilization working mode and the current sterilization duration, the sterilization stop time is determined.

4. The air conditioning system according to claim 3, characterized in that, The controller is configured to perform the following: determining the current sterilization time corresponding to the current temperature and the first current humidity of the indoor environment based on the correspondence between the indoor environment's temperature and humidity and the sterilization time, including: Based on the correspondence between the temperature and humidity of the indoor environment and the sterilization intensity, determine the current sterilization intensity corresponding to the current temperature and the first current humidity of the indoor environment; Based on the correspondence between sterilization intensity and sterilization duration, the sterilization duration corresponding to the current sterilization intensity is determined as the current sterilization duration.

5. The air conditioning system according to claim 1, characterized in that, After the controller is configured to exit the sterilization mode when the running time in the sterilization mode reaches the stop sterilization time, the method further includes: Obtain the second current humidity of the indoor environment; When the second current humidity is greater than or equal to the second humidity threshold, the dehumidification mode is activated, and the air conditioning system can reduce the humidity of the indoor environment when operating in the dehumidification mode.

6. The air conditioning system according to claim 5, characterized in that, The controller is also configured to perform: After the dehumidification mode is turned on, the third current humidity of the indoor environment is obtained; When the current humidity is less than the third humidity threshold, the dehumidification mode is stopped. The third humidity threshold is less than the second humidity threshold.

7. The air conditioning system according to any one of claims 1 to 6, characterized in that, The controller is also configured to: When the cumulative runtime of the air conditioning system is greater than or equal to the cumulative runtime threshold, the cumulative runtime is reset to zero.

8. The air conditioning system according to claim 1, characterized in that, The air conditioning system further includes a water ion sterilization device, which is connected to the controller. When the air conditioning system is in the first sterilization mode, the outdoor heat exchanger is controlled to work as an evaporator, the indoor heat exchanger is controlled to work as a condenser, and the water ion sterilization device is controlled to be in the off state. When the air conditioning system is in the second sterilization mode, the outdoor heat exchanger is controlled to work as a condenser, the indoor heat exchanger is controlled to work as an evaporator, and the water ion sterilization device is controlled to be in the on state.

9. A control method for an air conditioning system, characterized in that, The method includes: When the cumulative runtime of the air conditioning system is greater than or equal to the runtime threshold, or when the time interval between the most recent start time and the previous start time of the air conditioning system is greater than or equal to the time interval threshold, the sterilization mode of the air conditioning system is activated. Based on the correspondence between indoor temperature and humidity and sterilization time, the sterilization stop time corresponding to the current indoor temperature and the first current humidity of the indoor environment is determined. Exit the sterilization working mode at the specified stop sterilization time; The sterilization working mode includes at least a first sterilization mode and a second sterilization mode. When the air conditioning system is running in the second sterilization mode, it can convert water molecules in the indoor environment into water ions with sterilization function. When the air conditioning system is operating in the second sterilization mode, determining the stop sterilization time corresponding to the current indoor temperature and the first current indoor humidity based on the correspondence between indoor temperature and humidity and sterilization duration includes: Based on the correspondence between the temperature and humidity of the indoor environment and the sterilization intensity of the second sterilization mode, the current sterilization intensity corresponding to the current temperature and the first current humidity of the indoor environment is determined. Control the air conditioning system to operate the second sterilization mode at the current sterilization intensity; The time when the humidity of the indoor environment reaches a first humidity threshold is determined as the sterilization stop time.

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