Air conditioning system and control method and control device thereof

Abstract

The invention provides an air conditioning system and a control method and device thereof. The air conditioning system is provided with an air supply duct capable of controlling on-off and an air outlet capable of controlling on-off, the air supply duct is arranged to be capable of communicating with the indoor space so as to supply air to the indoor space, and the air outlet is arranged to be capable of communicating with the outdoor environment so as to discharge leaked refrigerants to the outdoor environment. The control method comprises the steps that refrigerant leakage of the air conditioning system is determined; and the air supply duct is closed, and the air outlet is conducted. By closing the air supply duct, the situation that the leaked refrigerant continues to enter the indoor space due to the fact that the air supply duct continues to supply air to the indoor space can be avoided, and therefore the situation that the concentration of the refrigerant in the indoor space is too high, and consequently the body health of a user is affected or safety risks such as fire disasters and explosions are caused is avoided. By communicating the air outlet, leaked refrigerants can be discharged into the external environment through the air outlet in time, and the safety risks such as fire disasters and explosions caused by excessive accumulation of the leaked refrigerants in the air conditioning system are avoided.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of air conditioning technology, and specifically refers to an air conditioning system, its control method, and control device. Background Art

[0002] The refrigerant in the air conditioning system is a harmful chemical to the human body, and excessive inhalation will affect the health of users. Moreover, low-GWP (Global Warming Potential) refrigerants (such as R32, R454B, etc.) are increasingly used in air conditioning products. However, refrigerants such as R32 and R454B are flammable. Once refrigerant leakage occurs, there are safety risks, such as possible fires or explosions. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide an air conditioning system, its control method, and control device, which can reduce the safety risks brought by refrigerant leakage.

[0004] An embodiment of this application provides a control method applied to an air conditioning system. The air conditioning system is provided with a blower duct that can control on / off and an air outlet that can control on / off. The blower duct is arranged to be able to communicate with the indoor space to send air to the indoor space, and the air outlet is arranged to be able to communicate with the outdoor environment to discharge the leaked refrigerant to the outdoor environment. The control method includes:

[0005] Determine that the air conditioning system has refrigerant leakage;

[0006] Turn off the blower duct and turn on the air outlet.

[0007] The control method provided by the embodiment of this application can turn off the blower duct and turn on the air outlet after determining that the air conditioning system has refrigerant leakage. By turning off the blower duct, it is possible to prevent the blower duct from continuing to send air to the indoor space, resulting in the leaked refrigerant continuing to enter the indoor space, which is beneficial to avoiding the refrigerant concentration in the indoor space being too high and affecting the health of users or causing safety risks such as fires and explosions. By turning on the air outlet, the leaked refrigerant can be discharged to the external environment in time through the air outlet, avoiding the accumulation of too much leaked refrigerant in the air conditioning system and causing safety risks such as fires and explosions.

[0008] Based on the above technical solution, this application can also be improved as follows.

[0009] In an exemplary embodiment, the air conditioning system includes a refrigerant leakage detection sensor. The determination that the air conditioning system has refrigerant leakage includes:

[0010] Determine that the air conditioning system has refrigerant leakage according to the detection result of the refrigerant leakage detection sensor.

[0011] In an exemplary embodiment, the air conditioning system includes a refrigerant circuit. Determining that the air conditioning system has a refrigerant leak includes:

[0012] Determining that the air conditioning system has a refrigerant leak based on the refrigerant pressure in the refrigerant circuit.

[0013] In an exemplary embodiment, the air conditioning system includes a control valve assembly. The control valve assembly is configured to control the on / off of the air supply duct and the air outlet. Shutting off the air supply duct and opening the air outlet includes:

[0014] Shutting off the air supply duct and opening the air outlet through the control valve assembly.

[0015] In an exemplary embodiment, the air outlet is independent of the air supply duct. The control valve assembly includes a first control valve and a second control valve. The first control valve is configured to control the on / off of the air supply duct, and the second control valve is configured to control the on / off of the air outlet.

[0016] Shutting off the air supply duct and opening the air outlet through the control valve assembly includes: shutting off the air supply duct through the first control valve and opening the air outlet through the second control valve.

[0017] In an exemplary embodiment, the air outlet is independent of the air supply duct. The control valve assembly includes a first control valve. The first control valve is configured to selectively open either the air supply duct or the air outlet.

[0018] Shutting off the air supply duct and opening the air outlet through the control valve assembly includes: shutting off the air supply duct and opening the air outlet through the first control valve.

[0019] In an exemplary embodiment, the air outlet is provided on the side wall of the air supply duct. The control valve assembly includes a first control valve. The first control valve is configured to selectively open either the air supply duct or the air outlet.

[0020] Shutting off the air supply duct and opening the air outlet through the control valve assembly includes: shutting off the air supply duct and opening the air outlet through the first control valve.

[0021] In an exemplary embodiment, the air conditioning system includes a compressor, an outdoor fan, and an electric auxiliary heating device. The control method further includes:

[0022] Based on determining that the air conditioning system has a refrigerant leak, controlling the compressor, the outdoor fan, and the electric auxiliary heating device to stop operating.

[0023] In an exemplary embodiment, the air conditioning system includes an indoor fan, and the control method further includes:

[0024] Based on determining that the refrigerant in the air conditioning system leaks, control the indoor fan to operate so that the leaked refrigerant is discharged to the external environment through the air outlet.

[0025] In an exemplary embodiment, the air conditioning system is in linkage control with an exhaust fan installed in the indoor space, and the exhaust fan is arranged to discharge the gas in the indoor space to the external environment. The control method further includes:

[0026] Based on determining that the refrigerant in the air conditioning system leaks, send an opening instruction to the exhaust fan to make the exhaust fan operate to discharge the leaked refrigerant in the indoor space.

[0027] An embodiment of the present application further provides a control device, including a processor and a memory storing a computer program. When the processor executes the computer program, the steps of the control method as described in any one of the above embodiments are implemented.

[0028] An embodiment of the present application further provides an air conditioning system, including the control device as described in the above embodiment. Description of the Drawings

[0029] Figure 1 It is a schematic flow chart of the control method provided by some embodiments of the present application;

[0030] Figure 2 It is a schematic structural diagram of the air conditioning system provided by some embodiments of the present application;

[0031] Figure 3 It is a schematic structural diagram of the air conditioning system provided by some other embodiments of the present application;

[0032] Figure 4 It is a schematic structural diagram of the air conditioning system provided by some other embodiments of the present application;

[0033] Figure 5 It is a schematic logic diagram of the control method provided by an embodiment of the present application;

[0034] In the Figures 2 to 4 drawings, the list of components represented by each reference numeral is as follows:

[0035] 1. Machine housing, 11. Indoor heat exchange cavity, 111. Air supply opening, 112. Air outlet, 2. Air supply duct, 3. Return air duct, 4. First control valve, 5. Second control valve. Detailed Embodiments

[0036] The principles and features of the present application will be described below in conjunction with the accompanying drawings. The examples given are only for explaining the present application and are not intended to limit the scope of the present application.

[0037] An embodiment of the present application provides a control method applied to an air conditioning system. The air conditioning system is provided with a supply air duct 2 that can control the on / off and an air outlet 112 that can control the on / off. The supply air duct 2 is arranged to be able to communicate with the indoor space to supply air to the indoor space. The air outlet 112 is arranged to be able to communicate with the outdoor environment to discharge the leaked refrigerant to the outdoor environment.

[0038] The air conditioning system may include a housing 1, a compressor (not shown in the figure), an indoor heat exchanger (not shown in the figure), an outdoor heat exchanger (not shown in the figure), a throttling device (not shown in the figure), an electric auxiliary heating device (not shown in the figure), and other structures. The compressor, the outdoor heat exchanger, the throttling device, and the indoor heat exchanger can be connected through refrigerant pipelines to form a refrigerant circuit.

[0039] As Figure 1 shown, the control method includes:

[0040] Step S202: Determine that the air conditioning system has refrigerant leakage;

[0041] Step S204: Shut off the supply air duct and conduct the air outlet.

[0042] The control method provided by the embodiment of the present application can shut off the supply air duct 2 and conduct the air outlet 112 after determining that the air conditioning system has refrigerant leakage. By shutting off the supply air duct 2, it is possible to prevent the supply air duct 2 from continuing to supply air to the indoor space, resulting in the leaked refrigerant continuing to enter the indoor space, which is beneficial to avoiding the refrigerant concentration in the indoor space being too high and affecting the health of users or causing safety risks such as fire and explosion. By conducting the air outlet 112, the leaked refrigerant can be discharged to the external environment in a timely manner through the air outlet 112, avoiding the accumulation of too much leaked refrigerant in the air conditioning system and causing safety risks such as fire and explosion.

[0043] Among them, the type of the air conditioning system is not limited, and it can be a split air conditioner or an integrated air conditioner.

[0044] In some embodiments, as Figures 2 to 4As shown, the air conditioning system is an integrated air conditioner, which is installed outdoors and sends air into the indoor space through the air supply duct 2. The air supply duct 2 can exist in the form of an air supply pipe. An indoor heat exchange chamber 11 and an outdoor heat exchange chamber can be provided in the housing 1 and separated from each other. The indoor heat exchanger is arranged in the indoor heat exchange chamber 11, and the outdoor heat exchanger is arranged in the outdoor heat exchange chamber. The air outlet 112 can be arranged on the side wall of the indoor heat exchange chamber 11. The indoor heat exchange chamber 11 can be provided with an air supply port 111 and a return air port. The air supply port 111 can be communicated with the indoor space through the air supply pipe, and the return air port can be communicated with the indoor space through the return air duct 3. Air ducts can be preset in the house in advance, and only the air supply duct and the return air duct 3 of the air conditioning system need to be connected to the preset air ducts in the house.

[0045] As Figure 2 and Figure 4 shown, the number of the air supply ports 111 can be two. One is arranged on the side wall of the indoor heat exchange chamber 11, and the other is arranged on the bottom wall of the indoor heat exchange chamber 11, which is convenient for reasonably selecting the connection position of the air supply duct according to the specific installation scenario of the air conditioning system. For example: when the installation scenario of the air conditioning system includes a flat tabletop (such as being installed on a house with a flat top), the housing 1 of the air conditioning system can be placed on the tabletop and fixed, and the air supply duct is connected to the air supply port 111 on the side wall; when the installation scenario of the air conditioning system does not have a flat tabletop (such as being installed on a house with a pitched roof), an installation bracket needs to be added, and the housing 1 of the air conditioning system is placed on the installation bracket and fixed. At this time, there is also installation space under the air conditioning system, so the air supply duct can be selected to be connected to the air supply port 111 on the bottom wall of the housing 1. For the air supply port 111 that does not need to be connected to the air supply duct, it can be sealed by a control valve. The air supply port 111 can be independent of the air outlet 112 for discharging the leaked refrigerant, or the two can be combined into one.

[0046] In some exemplary embodiments, the air conditioning system includes a refrigerant leakage detection sensor. The refrigerant leakage detection sensor can be arranged in the area near the indoor heat exchanger, which is convenient for detecting the leaked refrigerant near the indoor heat exchanger in time, and thus is beneficial to avoiding the leaked refrigerant from being sent into the indoor space.

[0047] As Figure 5 shown, determining that the air conditioning system has refrigerant leakage includes: determining that the air conditioning system has refrigerant leakage according to the detection result of the refrigerant leakage detection sensor.

[0048] It can be that the control device obtains the refrigerant concentration detection result of the refrigerant leakage detection sensor, and when the refrigerant concentration is greater than or equal to the set concentration value, the control device determines that the air-conditioning system has a refrigerant leakage. It can also be that when the refrigerant leakage detection sensor detects that the refrigerant concentration is greater than or equal to the set concentration value, it sends a refrigerant leakage signal to the control device, and the control device determines that the air-conditioning system has a refrigerant leakage based on the refrigerant leakage signal.

[0049] In some exemplary embodiments, the air-conditioning system includes a refrigerant circuit. Determining that the air-conditioning system has a refrigerant leakage includes: determining that the air-conditioning system has a refrigerant leakage according to the refrigerant pressure in the refrigerant circuit.

[0050] The refrigerant circuit may include structures such as a compressor, an indoor heat exchanger, an outdoor heat exchanger, a throttling device, etc. connected by refrigerant pipes. The system refrigerant circulates in the refrigerant circuit. During the pre-factory test, the refrigerant pressures at different positions of the refrigerant circuit can be measured and stored in the control device (i.e., the preset pressure values below). During the use process after leaving the factory, if it is found that the refrigerant pressure at the corresponding position of the refrigerant circuit is significantly reduced, it indicates that the air-conditioning system has a refrigerant leakage. Therefore, it is also possible to determine whether the air-conditioning system has a refrigerant leakage by the refrigerant pressure in the refrigerant circuit.

[0051] For example: as Figure 5 shown, when the refrigerant pressure at the corresponding position in the refrigerant circuit is lower than the preset pressure value and the pressure difference exceeds 0.5 MPa, it indicates that the air-conditioning system has a refrigerant leakage.

[0052] Among them, determining that the air-conditioning system has a refrigerant leakage according to the detection result of the refrigerant leakage detection sensor is to determine the leakage phenomenon according to the refrigerant leaked from the refrigerant circuit to the outside. And determining that the air-conditioning system has a refrigerant leakage according to the refrigerant pressure in the refrigerant circuit is to determine the leakage phenomenon according to the remaining refrigerant in the refrigerant circuit. These two schemes for determining refrigerant leakage do not conflict and can coexist. When the two judgment schemes coexist, as Figure 5 shown, as long as any one of the judgment schemes determines a refrigerant leakage, it can be determined that the air-conditioning system has a refrigerant leakage; only when both judgment schemes determine that the air-conditioning system has no refrigerant leakage can it be determined that the air-conditioning system has no refrigerant leakage.

[0053] In some exemplary embodiments, the air-conditioning system includes a control valve assembly, as Figures 2 to 4 shown, the control valve assembly is arranged to control the on-off of the air supply duct 2 and the air outlet 112. Shutting off the air supply duct 2 and conducting the air outlet 112 includes: shutting off the air supply duct 2 and conducting the air outlet 112 through the control valve assembly.

[0054] In some embodiments, as Figure 2As shown, the air outlet 112 and the air supply duct 2 are independent of each other. The control valve assembly includes a first control valve 4 and a second control valve 5. The first control valve 4 is configured to control the on / off of the air supply duct 2, and the second control valve 5 is configured to control the on / off of the air outlet 112. This solution facilitates the reasonable setting of the positions of the air supply duct 2 and the air outlet 112 according to needs, and also facilitates the reasonable arrangement of the positions of the first control valve 4 and the second control valve 5. For example, the first control valve 4 can be located at the port of the air supply duct 2 or inside the air supply duct 2. In this solution, the air outlet 112 can be combined with the air outlet 111 on the casing 1 that is not connected to the air supply duct.

[0055] Turning off the air supply duct 2 and turning on the air outlet 112 through the control valve assembly includes: turning off the air supply duct 2 through the first control valve 4 and turning on the air outlet 112 through the second control valve 5.

[0056] In other words, when the first control valve 4 is open, the air supply duct 2 is on; when the first control valve 4 is closed, the air supply duct 2 is off. When the second control valve 5 is open, the air outlet 112 is on; when the second control valve 5 is closed, the air outlet 112 is off.

[0057] In some other embodiments, as Figure 3 shown, the air outlet 112 and the air supply duct 2 are independent of each other. The control valve assembly includes a first control valve 4, and the first control valve 4 is configured to control either the air supply duct 2 or the air outlet 112 to be on.

[0058] Turning off the air supply duct 2 and turning on the air outlet 112 through the control valve assembly includes: turning off the air supply duct 2 and turning on the air outlet 112 through the first control valve 4.

[0059] In other words, when the first control valve 4 conducts the air supply duct 2, the air outlet 112 is closed; when the first control valve 4 opens the air outlet 112, the air supply duct 2 is off. This solution is beneficial to reducing one control valve, thus facilitating the simplification of the structure of the air conditioning system.

[0060] Among them, the air outlet 112 and the port of the air supply duct 2 can be on the same wall surface of the air conditioning system body (for example, both on the side wall of the body). The first control valve 4 can switch positions by rotating 180° or by translation. The air outlet 112 can also be on adjacent wall surfaces of the air conditioning system body with the port of the air supply duct 2 (for example, one on the side wall and the other on the bottom wall). The first control valve 4 can switch positions by rotating 90°. At this time, the air outlet 112 can be combined with the air outlet 111 on the casing 1 that is not connected to the air supply duct.

[0061] In still some other embodiments, as Figure 4As shown, the air outlet 112 is provided on the side wall of the air supply duct 2. The control valve assembly includes a first control valve 4, and the first control valve 4 is configured to control the selective communication between the air supply duct 2 and the air outlet 112.

[0062] Turning off the air supply duct 2 and turning on the air outlet 112 through the control valve assembly includes: turning off the air supply duct 2 and turning on the air outlet 112 through the first control valve 4.

[0063] In other words, the first control valve 4 can be located inside the air supply duct 2. When the first control valve 4 turns on the air supply duct 2, it exactly covers the air outlet 112 on the side wall of the air supply duct 2, closing the air outlet 112; when the first control valve 4 opens the air outlet 112, the air supply duct 2 is exactly stuck inside the air supply duct 2, shutting off the air supply duct 2. This solution helps reduce one control valve, thus facilitating the simplification of the structure of the air conditioning system.

[0064] Among them, the first control valve 4 can switch positions by rotating 90°.

[0065] In some exemplary embodiments, the air conditioning system includes a compressor, an outdoor fan, and an electric auxiliary heating device. The outdoor fan is configured to drive air to flow through the outdoor heat exchange chamber. As Figure 5 shown, the control method further includes:

[0066] Based on determining that the air conditioning system has a refrigerant leak, controlling the compressor, the outdoor fan, and the electric auxiliary heating device to stop operating.

[0067] On the one hand, this helps avoid further refrigerant leakage, and on the other hand, it helps minimize the operation of electrical components in the air conditioning system as much as possible to avoid safety risks such as fires and explosions caused by the generation of electric sparks.

[0068] Among them, controlling the compressor to stop operating means: when the compressor is in the operating state, turning off the compressor; when the compressor is in the shutdown state, maintaining the current shutdown state. Similarly, controlling the outdoor fan to stop operating means: when the outdoor fan is in the operating state, turning off the outdoor fan; when the outdoor fan is in the shutdown state, maintaining the current shutdown state. Controlling the electric auxiliary heating device to stop operating means: when the electric auxiliary heating device is in the operating state, turning off the electric auxiliary heating device; when the electric auxiliary heating device is in the shutdown state, maintaining the current shutdown state.

[0069] In some exemplary embodiments, the air conditioning system includes an indoor fan. The indoor fan is configured to drive air to flow through the indoor heat exchange chamber 11. The control method further includes:

[0070] Based on determining that the air conditioning system has a refrigerant leak, controlling the indoor fan to operate so that the leaked refrigerant is discharged to the external environment through the air outlet 112.

[0071] This is conducive to quickly blowing the leaked refrigerant accumulated in the casing 1 to the outdoor environment, so as to avoid as much as possible the generation of electric sparks leading to safety risks such as fire and explosion.

[0072] Among them, controlling the operation of the indoor fan means that when the indoor fan is in the running state, maintaining the current running state; when the indoor fan is in the stopped state, starting the indoor fan.

[0073] In some exemplary embodiments, the air conditioning system is linked and controlled with an exhaust fan installed in the indoor space, and the exhaust fan is arranged to discharge the gas in the indoor space to the outdoor environment. As Figure 5 shown, the control method further includes:

[0074] Based on determining that the air conditioning system has refrigerant leakage, sending an opening instruction to the exhaust fan to make the exhaust fan operate to discharge the leaked refrigerant into the indoor space.

[0075] This facilitates timely discharging of the leaked refrigerant in the indoor space, so as to avoid as much as possible affecting the health of users and avoid as much as possible safety risks such as fire and explosion in the indoor space caused by refrigerant leakage.

[0076] The embodiment of the present application also provides a control device, including a processor and a memory storing a computer program. When the processor executes the computer program, it realizes the steps of the control method in any of the above embodiments, and thus has all the above beneficial effects, which will not be elaborated here.

[0077] The processor may be an integrated circuit chip with signal processing capabilities. The above-mentioned processor may be a general-purpose processor, including a central processing unit (CPU for short) and a network processor (NP for short), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0078] The embodiment of the present application also provides an air conditioning system, including the control device described in the above embodiment, and thus has all the above beneficial effects, which will not be elaborated here.

[0079] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0080] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0081] In the present application, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0082] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0083] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0084] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

[0085] In any one or more of the above exemplary embodiments, the functions described can be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions can be stored on or transmitted via a computer-readable medium as one or more instructions or codes and executed by a hardware-based processing unit. The computer-readable medium can include a computer-readable storage medium corresponding to a tangible medium such as a data storage medium, or a communication medium including any medium that facilitates the transfer of a computer program, for example, from one place to another according to a communication protocol. In this way, the computer-readable medium generally corresponds to a non-transitory tangible computer-readable storage medium or a communication medium such as a signal or a carrier wave. The data storage medium can be any available medium accessible by one or more computers or one or more processors to retrieve instructions, codes, and / or data structures for implementing the techniques described in this disclosure. A computer program product can include a computer-readable medium.

[0086] By way of example, and not limitation, such computer-readable storage media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, flash memory, or any other medium that can be used to store the desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection can be termed a computer-readable medium. By way of example, if instructions are transmitted using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of the medium. However, it should be understood that computer-readable storage media and data storage media do not include connections, carrier waves, signals, or other transient media, but rather are directed to non-transient tangible storage media. As used herein, disk and optical disks include compact disk (CD), laser disk, optical disk, digital versatile disk (DVD), floppy disk, or Blu-ray disk, etc., where disks typically reproduce data magnetically, while optical disks use lasers to optically reproduce data. Combinations of the above should also be included within the scope of computer-readable media.

[0087] By way of example, instructions can be executed by one or more processors such as one or more digital signal processors (DSPs), general purpose microprocessors, application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other equivalent integrated or discrete logic circuits. Thus, the term "processor" as used herein can refer to any one of the foregoing structures or any other structure suitable for implementing the techniques described herein. Additionally, in some aspects, the functionality described herein can be provided within dedicated hardware and / or software modules configured for encoding and decoding, or incorporated in a combined codec. Also, the techniques can be implemented entirely in one or more circuits or logic elements.

[0088] The technical solutions of the embodiments of the present disclosure can be implemented in a wide variety of devices or apparatuses, including wireless handsets, integrated circuits (ICs) or a group of ICs (e.g., a chipset). The various components, modules, or units described in the embodiments of the present disclosure are emphasized to highlight the functional aspects of the devices configured to perform the described techniques, but do not necessarily need to be implemented by different hardware units. Rather, as described above, the various units can be combined in a codec hardware unit or provided by a collection of interoperating hardware units, including one or more processors as described above, in conjunction with appropriate software and / or firmware.

Claims

1. A control method, applied to an air conditioning system, characterized in that, The air conditioning system is provided with a supply air duct capable of controlling on / off and an air outlet capable of controlling on / off. The supply air duct is arranged to be communicable with the indoor space to supply air to the indoor space, and the air outlet is arranged to be communicable with the outdoor environment to discharge the leaked refrigerant to the outdoor environment; The control method includes: Determining that the air conditioning system has a refrigerant leak; Closing the supply air duct and opening the air outlet.

2. The control method according to claim 1, characterized in that, The air conditioning system includes a refrigerant leak detection sensor; determining that the air conditioning system has a refrigerant leak includes: Determining that the air conditioning system has a refrigerant leak according to the detection result of the refrigerant leak detection sensor.

3. The control method according to claim 1, characterized in that, The air conditioning system includes a refrigerant circuit; determining that the air conditioning system has a refrigerant leak includes: Determining that the air conditioning system has a refrigerant leak according to the refrigerant pressure in the refrigerant circuit.

4. The control method according to any one of claims 1 to 3, characterized in that, The air conditioning system includes a control valve assembly, and the control valve assembly is arranged to control the on / off of the supply air duct and the air outlet; closing the supply air duct and opening the air outlet includes: Closing the supply air duct and opening the air outlet through the control valve assembly.

5. The control method according to claim 4, characterized in that, The air outlet and the supply air duct are independent of each other. The control valve assembly includes a first control valve and a second control valve. The first control valve is arranged to control the on / off of the supply air duct, and the second control valve is arranged to control the on / off of the air outlet; Closing the supply air duct and opening the air outlet through the control valve assembly includes: closing the supply air duct through the first control valve and opening the air outlet through the second control valve.

6. The control method according to claim 4, characterized in that, The air outlet and the supply air duct are independent of each other. The control valve assembly includes a first control valve, and the first control valve is arranged to selectively open either the supply air duct or the air outlet; Closing the supply air duct and opening the air outlet through the control valve assembly includes: closing the supply air duct and opening the air outlet through the first control valve.

7. The control method according to claim 4, characterized in that, The air outlet is provided on the side wall of the supply air duct. The control valve assembly includes a first control valve, and the first control valve is arranged to selectively open either the supply air duct or the air outlet; Closing the supply air duct and opening the air outlet through the control valve assembly includes: closing the supply air duct and opening the air outlet through the first control valve.

8. The control method according to any one of claims 1 to 3, characterized in that, The air conditioning system includes a compressor, an outdoor fan, and an electric auxiliary heating device. The control method further includes: Based on determining that the air conditioning system has a refrigerant leak, controlling the compressor, the outdoor fan, and the electric auxiliary heating device to stop operating.

9. The control method according to any one of claims 1 to 3, characterized in that, The air conditioning system includes an indoor fan. The control method further includes: Based on determining that the air conditioning system has a refrigerant leak, controlling the indoor fan to operate so that the leaked refrigerant is discharged to the external environment through the air outlet.

10. The control method according to any one of claims 1 to 3, characterized in that, The air conditioning system is linked and controlled with an exhaust fan installed in the indoor space. The exhaust fan is arranged to discharge the gas in the indoor space to the outdoor environment. The control method further includes: Based on determining that there is a refrigerant leak in the air conditioning system, an opening instruction is sent to the exhaust fan to make the exhaust fan operate to discharge the leaked refrigerant into the indoor space.

11. A control device, characterized in that, It includes a processor and a memory storing a computer program. When the processor executes the computer program, the steps of the control method described in any one of claims 1 to 10 are implemented.

12. An air conditioning system, characterized in that, It includes the control device described in claim 11.

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