Refrigerant leakage control method, heating and ventilation equipment, device and storage medium

Abstract

The embodiment of the invention provides a refrigerant leakage control method, heating and ventilation equipment, a device and a storage medium, the heating and ventilation equipment comprises an outdoor component installed in an outdoor environment and an indoor component installed in an indoor environment, a refrigerant is transmitted between the outdoor component and the indoor component through a refrigerant pipeline, and an electric control valve is arranged on the refrigerant pipeline. The electric control valve is arranged in the outdoor component, is adjacent to the chassis of the outdoor component and is used for controlling the opening and closing of the discharge port; the method comprises the steps that when a refrigerant sensor of the heating and ventilation equipment detects refrigerant leakage of an indoor component, a refrigerant leakage value, detected by the refrigerant sensor, of the indoor component is obtained; and an opening instruction is generated according to the refrigerant leakage value, and the electric control valve is opened according to the opening instruction so that the refrigerant can be discharged through the discharging opening. By means of the scheme, active and rapid discharging of the refrigerant can be effectively promoted, and the safety problem caused by the fact that the refrigerant is completely leaked into an indoor room is avoided.

Description

Technical Field

[0001] This application relates to the field of home appliance technology, and in particular to refrigerant leakage control methods, heating and ventilation equipment, devices and storage media. Background Technology

[0002] Currently, most air conditioning products are gradually switching to refrigerants with lower Global Warming Potential (GWP), such as R32, R290, and R454B. However, most environmentally friendly refrigerants are still flammable. If a refrigerant leak accumulates and reaches a flammable concentration, it can be ignited, threatening the safety of people and buildings. Furthermore, large amounts of leaked refrigerant in the indoor environment can be easily absorbed by people, posing a health hazard. Summary of the Invention

[0003] The main objective of this application is to provide a refrigerant leakage control method, HVAC equipment, device, and storage medium, aiming to avoid safety problems caused by refrigerant leakage. The technical solution is as follows:

[0004] In a first aspect, this application provides a refrigerant leakage control method, which is applied to HVAC equipment. The HVAC equipment includes an outdoor component installed in an outdoor environment and an indoor component installed in an indoor environment. Refrigerant is transmitted between the outdoor component and the indoor component through a refrigerant pipeline. An electric control valve is installed on the refrigerant pipeline. The electric control valve is installed inside the outdoor component and adjacent to the chassis of the outdoor component. The electric control valve is used to control the opening and closing of the discharge port.

[0005] The method includes:

[0006] When the refrigerant sensor of the HVAC equipment detects a refrigerant leak in an indoor component, the refrigerant leak value detected by the refrigerant sensor for the indoor component is obtained;

[0007] An opening command is generated based on the refrigerant leakage value. The electric control valve is then opened according to the opening command to discharge the refrigerant through the vent.

[0008] Preferably, the method of generating the start command based on the refrigerant leakage value includes:

[0009] If the refrigerant leak value includes a refrigerant leak concentration value, then an activation command is generated when the refrigerant leak concentration value is greater than or equal to a preset concentration threshold; and / or,

[0010] If the refrigerant leakage value includes the duration of the refrigerant leakage, an activation command will be generated when the duration of the refrigerant leakage is greater than or equal to a preset time threshold.

[0011] Preferably, after acquiring the refrigerant leakage value detected by the refrigerant sensor for the indoor component, the method further includes:

[0012] If the refrigerant leak value includes the refrigerant leak concentration value, and the refrigerant leak concentration value is greater than or equal to the preset alarm threshold, then a fan operation command and a shutdown command will be generated.

[0013] The operation of the internal fans of the HVAC equipment is controlled according to the air volume value indicated by the fan operation command;

[0014] The operation of the temperature control components of the HVAC equipment is stopped according to the shutdown command.

[0015] Preferably, if the refrigerant leakage value includes a refrigerant leakage concentration value, and the refrigerant leakage concentration value is greater than or equal to a preset alarm threshold, then a fan operation command is generated, including:

[0016] If the refrigerant leakage value includes the refrigerant leakage concentration value, and the refrigerant leakage concentration value is greater than or equal to the preset alarm threshold, then the increase in air volume of the indoor fan is determined based on the refrigerant leakage concentration value.

[0017] The fan operation command is generated based on the increase in air volume.

[0018] Preferably, each refrigerant line is provided with a cut-off component, and among the cut-off components, the target cut-off component that is located on the same refrigerant line as the electric control valve is further away from the indoor components than the electric control valve;

[0019] Before the electrically controlled valve is opened according to the opening command to discharge the refrigerant through the vent, the following steps are also included:

[0020] Shut down all cut-off components to disconnect all refrigerant lines.

[0021] Preferably, the chassis of the outdoor component has an opening located adjacent to the discharge port of the electric control valve.

[0022] Preferably, the electrically controlled valve is located on the lowest refrigerant line along the height direction of the outdoor component.

[0023] Secondly, embodiments of this application provide a heating, ventilation, and air conditioning (HVAC) device for performing the steps of the method described above. The HVAC device includes:

[0024] Outdoor components, which are installed in outdoor environments;

[0025] An indoor component, which is installed in an indoor environment, is equipped with at least one refrigerant sensor for detecting refrigerant leakage.

[0026] A refrigerant pipeline is used to transfer refrigerant between the outdoor unit and the indoor unit; an electrically controlled valve is installed on the refrigerant pipeline, which is located inside the outdoor unit and adjacent to the chassis of the outdoor unit, and is used to control the opening and closing of the discharge port.

[0027] Preferably, each refrigerant line is provided with a cut-off component, which is used to cut off the refrigerant line; among the cut-off components, the target cut-off component that is located on the same refrigerant line as the electric control valve is further away from the indoor components than the electric control valve.

[0028] Preferably, the electrically controlled valve is located on the lowest refrigerant line along the height direction of the outdoor component.

[0029] Preferably, the chassis of the outdoor component has an opening located adjacent to the discharge port of the electric control valve.

[0030] Preferably, the indoor components also include an indoor fan and a temperature control assembly. The indoor fan is used to accelerate the flow of indoor air; the temperature control assembly includes an indoor heat exchanger, and a refrigerant sensor is disposed adjacent to the indoor heat exchanger.

[0031] Preferably, the HVAC equipment is a single unit, with the outdoor component being the outdoor side of the single unit and the indoor component being the indoor side of the single unit.

[0032] Preferably, the HVAC equipment is a split-type unit, with the outdoor component being the outdoor unit of the split-type unit and the indoor component being the indoor unit of the split-type unit.

[0033] Thirdly, this application provides a refrigerant leakage control device for a heating, ventilation, and air conditioning (HVAC) system. The HVAC system includes an outdoor component installed in an outdoor environment and an indoor component installed in an indoor environment. Refrigerant is transmitted between the outdoor component and the indoor component via a refrigerant pipeline. An electric control valve is installed on the refrigerant pipeline. The electric control valve is located inside the outdoor component and adjacent to the chassis of the outdoor component. The electric control valve is used to control the opening and closing of the discharge port.

[0034] The device includes: an acquisition unit and an emission unit;

[0035] The acquisition unit is used to acquire the refrigerant leakage value detected by the refrigerant sensor for the indoor component when the refrigerant sensor of the HVAC equipment detects a refrigerant leak in the indoor component.

[0036] The discharge unit is used to generate an opening command based on the refrigerant leakage value, and open the electric control valve according to the opening command to discharge the refrigerant through the discharge port.

[0037] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the above-described method.

[0038] In this embodiment, when a refrigerant leak is detected by the refrigerant sensor in the indoor component, an electrically controlled valve located in the outdoor component is opened, allowing the refrigerant in the refrigerant pipeline to be actively discharged to the outdoor environment through the vent. Furthermore, by placing the electrically controlled valve near the chassis of the outdoor component, the refrigerant discharge rate is accelerated, significantly reducing the concentration of leaked refrigerant in the indoor environment and preventing safety issues caused by refrigerant leaks. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the structure of a heating, ventilation, and air conditioning (HVAC) device provided in an embodiment of this application;

[0041] Figure 2 This is a schematic diagram of the structure of a heating, ventilation, and air conditioning (HVAC) device provided in an embodiment of this application;

[0042] Figure 3 This is a schematic diagram of the structure of a heating, ventilation, and air conditioning (HVAC) device provided in an embodiment of this application;

[0043] Figure 4 This is a schematic diagram of the structure of a heating, ventilation, and air conditioning (HVAC) device provided in an embodiment of this application;

[0044] Figure 5 This is a schematic diagram of the structure of a heating, ventilation, and air conditioning (HVAC) device provided in an embodiment of this application;

[0045] Figure 6 This is a schematic diagram of the structure of a heating, ventilation, and air conditioning (HVAC) device provided in an embodiment of this application;

[0046] Figure 7 A schematic flowchart illustrating a refrigerant leakage control method provided in an embodiment of this application;

[0047] Figure 8 A schematic flowchart illustrating a refrigerant leakage control method provided in an embodiment of this application;

[0048] Figure 9 A schematic flowchart illustrating a refrigerant leakage control method provided in an embodiment of this application;

[0049] Figure 10 This is a schematic diagram of the refrigerant leakage control device provided in an embodiment of this application.

[0050] Figure 11 This is a schematic diagram of the structure of a heating, ventilation, and air conditioning (HVAC) device provided in an embodiment of this application. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this specification.

[0052] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a heating, ventilation, and air conditioning (HVAC) device provided in an embodiment of this application. The HVAC device 01 (not shown) includes an outdoor component 10, an indoor component 20, and a refrigerant pipeline 30. The outdoor component 10 is installed in the outdoor environment, the indoor component 20 is installed in the indoor environment, and the refrigerant pipeline 30 is used to transfer refrigerant between the outdoor component 10 and the indoor component 20. The HVAC device 01 also includes a temperature control component 100 (not shown) for regulating the ambient temperature. This temperature control component may include, but is not limited to, a first temperature control component 101 and a second temperature control component 201. The first temperature control component 101 is located inside the outdoor component 10 and may include, but is not limited to, an outdoor heat exchanger, a compressor, and an outdoor fan. The second temperature control component 201 is located inside the indoor component 20 and may include, but is not limited to, an indoor heat exchanger and an electric auxiliary heater.

[0053] It is understandable that the structure of HVAC equipment 01 is not limited to Figure 1 The structure shown can be customized to meet specific needs. For example, ... Figure 1 As shown, when the HVAC equipment 01 is a split unit, the outdoor component 10 is the outdoor unit of the split unit, and the indoor component 20 is the indoor unit of the split unit. The outdoor unit and the indoor unit are installed independently in the outdoor environment and the indoor environment, respectively, and refrigerant is transferred between the outdoor unit and the indoor unit through refrigerant pipelines.

[0054] like Figure 2 As shown, when the HVAC equipment 01 is a complete unit, the outdoor component 10 is the outdoor side of the complete unit, and the indoor component 20 is the indoor side of the complete unit. During installation, the complete unit is embedded in the wall with the outdoor side facing the outdoor environment and the indoor side facing the indoor environment; refrigerant is transferred between the outdoor and indoor sides through refrigerant piping.

[0055] It should be noted that, Figure 1 and Figure 2 The structural diagram of the HVAC equipment shown is merely an example. The structural diagram of the HVAC equipment described in the embodiments of this application is to more clearly illustrate the technical solutions of the embodiments of this application, and does not constitute a limitation on the technical solutions provided in the embodiments of this application. Those skilled in the art will know that with the evolution of HVAC equipment, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0056] based on Figure 1 The structure of the HVAC equipment shown is such that, in related technologies, when a refrigerant leak occurs in the indoor component 20 of the HVAC equipment 01, such as a conventional refrigerant-based air conditioner, an alarm signal is usually issued immediately and any electronic components are disconnected upon detection of a refrigerant leak on the indoor side. However, under this approach, all the refrigerant from the air conditioner will leak into the room, posing a hazard to occupants.

[0057] Therefore, in order to avoid safety issues caused by refrigerant leakage, this application provides a heating and ventilation device that can actively release refrigerant from outdoor components after detecting a refrigerant leak, ensuring that the refrigerant will not be completely leaked into the indoor environment, and greatly reducing the harm of refrigerant being absorbed by the human body.

[0058] The following will combine Figures 3-6 The following describes the arrangement of the HVAC equipment and its structure proposed in the embodiments of this application.

[0059] Please see Figure 3 , Figure 3 This is a schematic diagram of the structure of a heating, ventilation, and air conditioning (HVAC) device provided in an embodiment of this application. Figure 3As shown, the HVAC equipment 01 (not shown) includes at least an outdoor component 10, an indoor component 20, and a refrigerant pipeline 30. The outdoor component 10 is installed outdoors, the indoor component 20 is installed indoors, and the refrigerant pipeline 30 is used to transfer refrigerant between the outdoor component 10 and the indoor component 20. At least one refrigerant sensor 202 is installed within the indoor component 20 to detect refrigerant leakage. That is, when refrigerant leakage occurs in the indoor component 20, the refrigerant leakage value can be detected by the refrigerant sensor. This leakage value may include, but is not limited to, refrigerant leakage concentration and leakage duration. An electrically controlled valve 301 is installed on the refrigerant pipeline 30. The electrically controlled valve 301 is located within the outdoor component 10 and adjacent to its chassis. The electrically controlled valve 301 is used to control the opening and closing of the discharge port 302 (not shown). That is, an electric control valve 301 is installed on the refrigerant pipeline 30. The electric control valve 301 is connected to the discharge port 302 so that the discharge port 302 is opened when the electric control valve 301 is opened and the discharge port 302 is closed when the electric control valve 301 is closed.

[0060] When the refrigerant sensor 202 detects a refrigerant leak in the indoor component 20, the electrically controlled valve 301 installed on the outdoor component 10 is opened, allowing the refrigerant in the refrigerant pipeline 30 to be actively discharged to the outdoor environment through the vent 302. Furthermore, by placing the electrically controlled valve 301 near the chassis of the outdoor component 10, the refrigerant discharge rate is accelerated, significantly reducing the concentration of leaked refrigerant in the indoor environment and lowering the risk of refrigerant absorption by the human body.

[0061] Further, please see Figure 4 , Figure 4 This is a schematic diagram of a heating, ventilation, and air conditioning (HVAC) system according to an embodiment of this application. Each refrigerant pipe 30 of the HVAC system 01 is equipped with a shut-off component (not shown), which is used to shut off each refrigerant pipe 30. This shut-off component can be a mechanical throttling device or a solenoid valve. Figure 4 As shown, if the HVAC equipment 01 includes two refrigerant lines 30, namely a first refrigerant line (top of the diagram) and a second refrigerant line (bottom of the diagram), then a first shut-off component 303a is installed on the first refrigerant line (top of the diagram), and a second shut-off component 303b is installed on the second refrigerant line (bottom of the diagram). The electric control valve 301 is installed on the second refrigerant line (bottom of the diagram). Among the shut-off components, the target shut-off component (i.e., the second shut-off component 303b) installed on the same refrigerant line (i.e., the second refrigerant line) as the electric control valve 301 is further away from the indoor unit 20 relative to the electric control valve 301.

[0062] When the refrigerant sensor 202 detects a refrigerant leak in the indoor unit 20, it controls the shut-off components to close, thereby cutting off each refrigerant line 30 and preventing a large amount of refrigerant in the refrigerant line 30 from continuing to leak out of the indoor unit. Furthermore, by placing the target shut-off component 303b, which is located on the same refrigerant line as the electric control valve 301, further away from the indoor unit 20 relative to the electric control valve 301, while closing all shut-off components including the target shut-off component 303b, the electric control valve 301 located in the outdoor unit 10 is opened. This allows the refrigerant stored in the refrigerant lines 30 distributed throughout the indoor unit to be discharged to the outdoor environment through the vent 302, further reducing the amount of refrigerant leaking into the indoor environment.

[0063] Further, please see Figure 5 , Figure 5 This is a schematic diagram of a heating, ventilation, and air conditioning (HVAC) system according to an embodiment of this application. In this HVAC system 01, along the height direction of the outdoor component 10, the electrically controlled valve 301 is installed on the lowest refrigerant pipe 30. That is, when there is more than one refrigerant pipe 30, the electrically controlled valve 301 is installed on the refrigerant pipe with the lowest horizontal height and closest to the chassis of the outdoor component 10. Figure 4 As shown, if the HVAC equipment 01 includes three refrigerant pipes 30, namely the third refrigerant pipe 30c, the fourth refrigerant pipe 30d, and the fifth refrigerant pipe 30e, the order of these three refrigerant pipes in the outdoor component 10 from lowest to highest horizontal height is: third refrigerant pipe 30c < fourth refrigerant pipe 30d < fifth refrigerant pipe 30e. Along the height direction of the outdoor component 10, the electric control valve 301 is sequentially installed on the lowest refrigerant pipe. That is, the electric control valve 301 is installed on the third refrigerant pipe 30c, which has the lowest horizontal height.

[0064] By placing the electric control valve 301 on the lowest refrigerant line 30 along the height direction of the outdoor component 10, leaked refrigerant can be quickly discharged to the outside even in complex refrigerant piping layout scenarios.

[0065] Further, please see Figure 6 , Figure 6 This is a schematic diagram of the structure of a heating, ventilation, and air conditioning (HVAC) device provided in an embodiment of this application. In this HVAC device 01, the chassis of the outdoor component 10 is provided with an opening 102, which is located adjacent to the discharge port 302 (not shown) of the electric control valve 301.

[0066] By providing an opening 102 near the discharge port 302 of the electric control valve 301, the refrigerant discharged into the outdoor component 10 can be further accelerated to diffuse into the outdoor environment.

[0067] Furthermore, in the HVAC equipment 01, the indoor component 20 is also equipped with an indoor fan 203 to accelerate the flow of indoor air.

[0068] When the refrigerant sensor 202 detects a refrigerant leak in the indoor component 20, the operation of the indoor fan 203 is controlled according to the detected refrigerant leak value. This can accelerate the flow of indoor air, quickly dilute the leaked refrigerant in the indoor environment, ensure that the refrigerant leak concentration does not exceed the standard, and reduce the harm of refrigerant being absorbed by the human body.

[0069] Furthermore, the HVAC equipment 01 also includes a temperature control component 100 (not shown) for regulating the ambient temperature. This temperature control component may include, but is not limited to, a first temperature control component 101 and a second temperature control component 201. The first temperature control component 101 is located within the outdoor component 10 and may include, but is not limited to, an outdoor heat exchanger, compressor, and outdoor fan. The second temperature control component 201 is located within the indoor component 20 and may include, but is not limited to, an indoor heat exchanger 2011 and electric auxiliary heating.

[0070] In this indoor unit 20, the refrigerant sensor 202 is positioned adjacent to the indoor heat exchanger 2011. By placing the refrigerant sensor 202 near the indoor heat exchanger 2011, the refrigerant leakage value of the indoor unit can be detected more quickly and accurately.

[0071] When the refrigerant sensor 202 detects a refrigerant leak in the indoor component 20, it shuts down the operation of the temperature control component based on the detected refrigerant leak value, thus preventing dangerous situations such as ignition or explosion caused by the leaked refrigerant due to high temperature.

[0072] It is understood that the number of outdoor components, indoor components, refrigerant piping, electrically controlled valves, and discharge outlets of the HVAC equipment in the embodiments of this application can be adjusted according to actual needs. Figures 3-6 The illustration only shows the arrangement of outdoor components, indoor components, refrigerant piping, electrically controlled valves, and discharge outlets in the HVAC equipment, and does not constitute a limitation on the number of outdoor components, indoor components, refrigerant piping, electrically controlled valves, and discharge outlets in the HVAC equipment in the embodiments of this application.

[0073] based on Figures 3-6 The HVAC equipment and its structural arrangement shown below will be discussed in conjunction with... Figure 7-9 This application provides a detailed description of the refrigerant leakage control method provided in its embodiments.

[0074] Please see Figure 7 , Figure 7This is a schematic flowchart illustrating a refrigerant leakage control method provided in an embodiment of this application. The refrigerant leakage control method is applied to HVAC equipment, which includes an outdoor component installed in an outdoor environment and an indoor component installed in an indoor environment. Refrigerant is transferred between the outdoor component and the indoor component via a refrigerant pipeline. An electrically controlled valve is installed on the refrigerant pipeline, located within the outdoor component and adjacent to its chassis. The electrically controlled valve is used to control the opening and closing of the discharge port.

[0075] like Figure 7 As shown, the method includes the following steps S101-S102.

[0076] S101, when the refrigerant sensor of the HVAC equipment detects a refrigerant leak in the indoor component, the refrigerant leak value detected by the refrigerant sensor for the indoor component is obtained;

[0077] The method provided in this application can be implemented using a computer program and can run on HVAC equipment or on devices such as mobile phones, computers, and servers that have established a communication connection with the HVAC equipment. This application example uses the method applied to HVAC equipment.

[0078] In this embodiment, the HVAC equipment includes at least an outdoor component, an indoor component, and refrigerant piping. The outdoor component is installed in the outdoor environment, the indoor component is installed in the indoor environment, and the refrigerant piping is used to transfer refrigerant between the outdoor and indoor components. At least one refrigerant sensor is installed within the indoor component to detect refrigerant leakage. That is, when a refrigerant leak occurs in the indoor component, it can be detected by the refrigerant sensor. For example, when the refrigerant leakage concentration detected by the sensor is greater than zero, it indicates that a refrigerant leak has occurred in the indoor component. When the refrigerant sensor detects a refrigerant leak in the indoor component, the refrigerant leakage value detected by the sensor for that indoor component is collected. This refrigerant leakage value may include, but is not limited to, refrigerant leakage concentration and refrigerant leakage duration.

[0079] S102, generate an opening command based on the refrigerant leakage value, and open the electric control valve according to the opening command to discharge the refrigerant through the discharge port.

[0080] In this embodiment of the application, at least one electrically controlled valve is installed on the refrigerant pipeline of the HVAC equipment. This electrically controlled valve is located inside the outdoor component of the HVAC equipment and adjacent to the chassis of the outdoor component. The electrically controlled valve is used to control the opening and closing of the drain outlet. That is, at least one electrically controlled valve is installed on the refrigerant pipeline of the HVAC equipment, and this electrically controlled valve is connected to the drain outlet so that the drain outlet is opened when the electrically controlled valve is opened and closed when the electrically controlled valve is closed.

[0081] In this embodiment, an opening command is generated based on the obtained refrigerant leakage value. The electrically controlled valve is then opened according to this command to discharge the refrigerant from the refrigerant pipeline through the vent. For example, when a refrigerant leakage value greater than zero is detected, an opening command is generated and sent to the electrically controlled valve to control it to open and discharge the refrigerant from the refrigerant pipeline through the vent.

[0082] Furthermore, the method for generating the activation command based on the refrigerant leakage value could be, for example, by pre-setting a concentration threshold, which represents the critical point of the refrigerant leakage concentration. If the obtained refrigerant leakage value includes a refrigerant leakage concentration value, then this refrigerant leakage concentration value is compared with the preset concentration threshold. If the refrigerant leakage concentration value is greater than or equal to the preset concentration threshold, it indicates that the amount of refrigerant leaked by the indoor components is excessive, and at this time, an activation command is generated.

[0083] Furthermore, the method of generating the activation command based on the refrigerant leakage value can be, for example, by pre-setting a time threshold, which represents a critical point in the duration of the refrigerant leakage. If the obtained refrigerant leakage value includes the duration of the refrigerant leakage, then the duration of the refrigerant leakage is compared with the preset time threshold. If the duration of the refrigerant leakage is greater than or equal to the preset time threshold, it indicates that the amount of refrigerant leaked by the indoor components is too large, and at this time, an activation command is generated.

[0084] In a preferred embodiment of this application, the HVAC equipment may further include a temperature control component and an indoor fan. The indoor fan is installed in the indoor component of the HVAC equipment to accelerate the flow of indoor air. The temperature control component is used to regulate the ambient temperature. The temperature control component may include, but is not limited to, a first temperature control component and a second temperature control component. The first temperature control component is located in the outdoor component and may include, but is not limited to, an outdoor heat exchanger, a compressor, and an outdoor fan; the second temperature control component is located in the indoor component and may include, but is not limited to, an indoor heat exchanger and electric auxiliary heating.

[0085] Furthermore, after acquiring the refrigerant leakage value detected by the refrigerant sensor for the indoor component, the method may further include: pre-setting an alarm threshold, which represents a critical point for the refrigerant leakage concentration. If the acquired refrigerant leakage value includes a refrigerant leakage concentration value, the refrigerant leakage concentration value is compared with the preset alarm threshold. If the refrigerant leakage concentration value is greater than or equal to the preset alarm threshold, it indicates that the amount of refrigerant leaked by the indoor component is excessive. At this time, a fan operation command and a shutdown command are generated. The operation of the indoor fan of the HVAC system is controlled according to the airflow value indicated by the fan operation command. The operation of the temperature control component of the HVAC system is stopped according to the shutdown command.

[0086] Furthermore, the method for generating fan operation commands based on refrigerant leakage values ​​can be, for example, by pre-setting an alarm threshold, which represents a critical point for the refrigerant leakage concentration. If the obtained refrigerant leakage values ​​include a refrigerant leakage concentration value, this value is compared with the preset alarm threshold. If the refrigerant leakage concentration value is greater than or equal to the preset alarm threshold, it indicates that the amount of refrigerant leaked from the indoor components is excessive. In this case, the increase in indoor fan airflow is determined based on the refrigerant leakage concentration value, and a fan operation command is generated based on this increase in airflow.

[0087] Then, S102 is executed, an opening command is generated based on the refrigerant leakage value, and the electric control valve is opened according to the opening command to discharge the refrigerant through the vent.

[0088] In a preferred embodiment of this application, each refrigerant line of the HVAC system is provided with at least one shut-off component for shutting off each refrigerant line. The shut-off component can be a mechanical throttling device or a solenoid valve. Among the shut-off components, the target shut-off component located on the same refrigerant line as the electrically controlled valve is further away from the indoor components relative to the electrically controlled valve.

[0089] Furthermore, before opening the electrically controlled valve according to the opening command to discharge the refrigerant through the vent, it may also include: closing each shut-off component to cut off each refrigerant line.

[0090] Then, S102 is executed, an opening command is generated based on the refrigerant leakage value, and the electric control valve is opened according to the opening command to discharge the refrigerant through the vent.

[0091] In a preferred embodiment of this application, the outdoor component of the HVAC system has an opening on its chassis, which is located near the discharge port of the electrically controlled valve to accelerate the diffusion of the refrigerant discharged into the outdoor component into the outdoor environment.

[0092] In a preferred embodiment of this application, in the HVAC system, the electrically controlled valve is installed on the lowest refrigerant line along the height direction of the outdoor component. That is, when there is more than one refrigerant line, the electrically controlled valve is installed on the refrigerant line with the lowest horizontal height and closest to the chassis of the outdoor component.

[0093] In this implementation scheme, when a refrigerant leak is detected by the refrigerant sensor in the indoor component, an electrically controlled valve located in the outdoor component is opened, actively discharging the refrigerant in the refrigerant pipeline to the outdoor environment through the vent. Furthermore, by placing the electrically controlled valve near the chassis of the outdoor component, the refrigerant discharge rate is accelerated, significantly reducing the concentration of leaked refrigerant in the indoor environment and preventing safety issues caused by refrigerant leaks.

[0094] Please see Figure 8 , Figure 8 This is a flowchart illustrating a refrigerant leakage control method provided in an embodiment of this application. This refrigerant leakage control method is applied to HVAC equipment, and the configuration of the HVAC equipment and its structure can be referenced. Figures 3-6 As shown. The method includes the following steps S201-S207.

[0095] S201, when the refrigerant sensor of the HVAC equipment detects a refrigerant leak in the indoor component, the refrigerant leak value detected by the refrigerant sensor for the indoor component is obtained;

[0096] Specifically, the detailed process of step S201 can be found in the description of step S101 in the above embodiments, and will not be repeated here.

[0097] S202, if the refrigerant leakage value includes the refrigerant leakage concentration value, and the refrigerant leakage concentration value is greater than or equal to the preset alarm threshold, then generate a fan operation command and a shutdown command.

[0098] In this embodiment, an alarm threshold is preset, which represents a critical point for refrigerant leakage concentration. If the obtained refrigerant leakage value includes a refrigerant leakage concentration value, this concentration value is compared with the preset alarm threshold. If the refrigerant leakage concentration value is greater than or equal to the preset alarm threshold, it indicates that the amount of refrigerant leaked from the indoor components is excessive. At this time, a fan operation command and a shutdown command are generated. The fan operation command controls the operation of the indoor fan of the HVAC system; the shutdown command shuts down the operation of the temperature control components of the HVAC system.

[0099] S203, control the operation of the internal fan of the HVAC equipment according to the air volume value indicated by the fan operation command;

[0100] In this embodiment of the application, the HVAC equipment may further include at least one internal fan, wherein the internal fan is installed in the indoor components of the HVAC equipment to accelerate the flow of indoor air. For a generated fan operation command, the air volume value in the fan operation command is obtained, and the operation of the internal fan of the HVAC equipment is controlled according to the air volume value.

[0101] Furthermore, based on the acquired airflow value and the current operating status of the indoor fan, the operation of the indoor fan in the HVAC system is controlled. Specifically, if the current operating status of the indoor fan is not started, the indoor fan is controlled to start operation at the acquired airflow value; if the current operating status of the indoor fan is started, the operating airflow value of the indoor fan is acquired. If the operating airflow value is consistent with the airflow value in the fan operation command, the operating status and operating airflow value of the indoor fan are maintained; if the current operating status of the indoor fan is started, and the acquired operating airflow value of the indoor fan is less than the airflow value in the fan operation command, the operating airflow value of the indoor fan is adjusted to the acquired airflow value.

[0102] S204, stop the operation of the temperature control component of the HVAC equipment according to the shutdown command;

[0103] In this embodiment of the application, the HVAC equipment may further include a temperature control component, which is used to regulate the ambient temperature. The temperature control component may include, but is not limited to, a first temperature control component and a second temperature control component. The first temperature control component is located in the outdoor component and may include, but is not limited to, an outdoor heat exchanger, a compressor, and an outdoor fan; the second temperature control component is located in the indoor component and may include, but is not limited to, an indoor heat exchanger and an electric auxiliary heater. Upon receiving a generated shutdown command, the operation of the temperature control component of the HVAC equipment is stopped according to the shutdown command. That is, the shutdown command is sent to the temperature control components of the compressor, outdoor fan, and electric auxiliary heater respectively to stop their operation.

[0104] In this implementation plan, when the detected refrigerant leak concentration exceeds a preset alarm threshold, a fan operation command and a shutdown command are generated. The operation of the indoor fan is controlled according to the airflow value indicated by the fan operation command, which accelerates indoor air flow, quickly dilutes the leaked refrigerant in the indoor environment, ensures that the refrigerant leak concentration does not exceed the standard, and reduces the harm caused by refrigerant absorption by the human body. By shutting down the operation of the temperature control component according to the generated shutdown command when the refrigerant leak concentration exceeds the preset alarm threshold, dangerous situations such as ignition or explosion of the leaked refrigerant due to high temperatures can be avoided.

[0105] S205, close each of the cut-off components to cut off each of the refrigerant lines;

[0106] In this embodiment of the application, each refrigerant line of the HVAC system is provided with at least one shut-off component, which is used to shut off each refrigerant line. The shut-off component can be a mechanical throttling device or a solenoid valve. Among the shut-off components, the target shut-off component located on the same refrigerant line as the electrically controlled valve is further away from the indoor components relative to the electrically controlled valve.

[0107] Specifically, at least one shut-off component on each refrigerant line is closed to cut off the refrigerant lines, preventing a large amount of refrigerant in the refrigerant lines from continuing to leak out of the indoor components.

[0108] In this implementation scheme, when a refrigerant sensor detects a refrigerant leak in an indoor unit, it controls the closure of various shut-off components to cut off the refrigerant lines, preventing a large amount of refrigerant from leaking out of the indoor unit. Furthermore, by placing a target shut-off component on the same refrigerant line as the electric control valve at a location further away from the indoor unit, and simultaneously closing all shut-off components including the target shut-off component while opening the electric control valve in the outdoor unit, the refrigerant stored in the refrigerant lines distributed throughout the indoor unit can be discharged to the outdoor environment through the vent, further reducing the amount of refrigerant leaking into the indoor environment.

[0109] S206, if the refrigerant leakage value includes a refrigerant leakage concentration value, then when the refrigerant leakage concentration value is greater than or equal to a preset concentration threshold, an activation command is generated;

[0110] In this embodiment of the application, at least one electrically controlled valve is installed on the refrigerant pipeline of the HVAC equipment. This electrically controlled valve is located inside the outdoor component of the HVAC equipment and adjacent to the chassis of the outdoor component. The electrically controlled valve is used to control the opening and closing of the drain outlet. That is, at least one electrically controlled valve is installed on the refrigerant pipeline of the HVAC equipment, and this electrically controlled valve is connected to the drain outlet so that the drain outlet is opened when the electrically controlled valve is opened and closed when the electrically controlled valve is closed.

[0111] Specifically, a concentration threshold is preset, which represents the critical point of refrigerant leakage concentration. Preferably, the preset concentration threshold is greater than or equal to a preset alarm threshold. If the obtained refrigerant leakage value includes a refrigerant leakage concentration value, this refrigerant leakage concentration value is compared with the preset concentration threshold. When the refrigerant leakage concentration value is greater than or equal to the preset concentration threshold, it indicates that the amount of refrigerant leaking from the indoor components is excessive, and an activation command is generated at this time.

[0112] S207, according to the opening command, the electric control valve is opened to discharge the refrigerant through the discharge port.

[0113] In the embodiments of this application, at least one electrically controlled valve is opened according to the generated opening command to discharge refrigerant in the refrigerant pipeline through the discharge port.

[0114] In this implementation plan, when the refrigerant sensor detects a refrigerant leak in an indoor component, it further determines that the refrigerant leak concentration value is greater than or equal to a preset concentration threshold before opening the electric control valve to discharge the refrigerant through the vent. This effectively prevents the refrigerant from being discharged due to malfunction of the refrigerant sensor.

[0115] Please see Figure 9 , Figure 9 This is a flowchart illustrating a refrigerant leakage control method provided in an embodiment of this application. This refrigerant leakage control method is applied to HVAC equipment, and the configuration of the HVAC equipment and its structure can be referenced. Figures 3-6 As shown. The method includes the following steps S301-S309.

[0116] S301, when the refrigerant sensor of the HVAC equipment detects a refrigerant leak in the indoor component, the refrigerant leak value detected by the refrigerant sensor for the indoor component is obtained;

[0117] Specifically, the detailed process of step S301 can be found in the description of step S101 in the above embodiments, and will not be repeated here.

[0118] In a preferred embodiment of this application, the indoor component further includes a temperature control assembly, the temperature control assembly including an indoor heat exchanger, and the refrigerant sensor being disposed adjacent to the indoor heat exchanger.

[0119] Specifically, in this HVAC system, the indoor components may further include a temperature control assembly and a refrigerant sensor. The temperature control assembly, used to regulate the ambient temperature, may include an indoor heat exchanger. The refrigerant sensor is located adjacent to the indoor heat exchanger.

[0120] In this implementation scheme, by placing the refrigerant sensor near the indoor heat exchanger, the refrigerant leakage value of indoor components can be detected more quickly and accurately.

[0121] S302, if the refrigerant leakage value includes a refrigerant leakage concentration value, and the refrigerant leakage concentration value is greater than or equal to a preset alarm threshold, then a shutdown command is generated;

[0122] In this embodiment, an alarm threshold is preset, which represents a critical point for the refrigerant leakage concentration. If the obtained refrigerant leakage value includes a refrigerant leakage concentration value, this refrigerant leakage concentration value is compared with the preset alarm threshold. When the refrigerant leakage concentration value is greater than or equal to the preset alarm threshold, it indicates that the amount of refrigerant leaked by the indoor components is excessive. At this time, a shutdown command is generated, which is used to shut down the operation of the temperature control components of the HVAC equipment.

[0123] S303, if the refrigerant leakage value includes a refrigerant leakage concentration value, and the refrigerant leakage concentration value is greater than or equal to a preset alarm threshold, then the increase in air volume of the indoor fan is determined based on the refrigerant leakage concentration value.

[0124] S304, Generate a fan operation command based on the increase in air volume;

[0125] In the implementation scheme of this application, if the obtained refrigerant leakage value includes a refrigerant leakage concentration value, and the refrigerant leakage concentration value is greater than or equal to a preset alarm threshold, then the increase in air volume of the indoor fan is determined based on the refrigerant leakage concentration value, and a fan operation command is generated based on the increase in air volume.

[0126] Specifically, corresponding leakage concentration levels are pre-set based on different numerical ranges of refrigerant leakage concentration, and corresponding airflow adjustment modes are set for different leakage concentration levels. For example, the airflow adjustment mode corresponding to the first leakage concentration level is the minimum airflow operation mode, and the airflow adjustment mode corresponding to the second leakage concentration level is the maximum airflow operation mode. When the detected refrigerant leakage concentration value is greater than or equal to the preset alarm threshold, it indicates that the amount of refrigerant leaked from the indoor components is too much. At this time, the refrigerant leakage concentration value is matched with the numerical range corresponding to the preset leakage concentration level to obtain the corresponding leakage concentration level and airflow adjustment mode. The operating status of the indoor fan of the HVAC system is obtained. When the operating status of the indoor fan is not started, the airflow value corresponding to the airflow adjustment mode is determined as the airflow increase value of the indoor fan, and a fan operation command is generated based on the airflow increase value. When the internal fan is in the "start" state, the current working air volume value of the internal fan and the air volume value corresponding to the air volume adjustment mode are obtained; based on the working air volume value and the air volume value of the matched air volume adjustment mode, the air volume increase value of the internal fan is determined, and a fan operation command is generated based on the air volume increase value.

[0127] S305, control the operation of the internal fan of the HVAC equipment according to the air volume value indicated by the fan operation command;

[0128] In this embodiment of the application, the HVAC equipment may further include at least one internal fan, wherein the internal fan is installed in the indoor components of the HVAC equipment to accelerate the flow of indoor air. For a generated fan operation command, the air volume value in the fan operation command is obtained; this air volume value can be an increase in air volume, and the operation of the internal fan of the HVAC equipment is controlled based on this increase in air volume.

[0129] Specifically, when the internal fan is in an off state, and the airflow increase is greater than zero, the internal fan is controlled to start operating at that airflow increase. When the internal fan is in an on state and the airflow increase is zero, it indicates that the current operating airflow value of the internal fan matches the airflow value of the matched airflow adjustment mode. In this case, the internal fan's operating state and operating airflow value are maintained. When the internal fan is in an on state and the airflow increase is greater than zero, it indicates that the current operating airflow value of the internal fan needs to be increased. In this case, the airflow value of the internal fan is adjusted according to the operating airflow value and the airflow increase value.

[0130] S306, stop the operation of the temperature control component of the HVAC equipment according to the shutdown command;

[0131] S307, Close each of the cut-off components to cut off each of the refrigerant lines;

[0132] Specifically, the detailed process of steps S306-S307 can be found in the description of steps S204-S205 in the above embodiment, and will not be repeated here.

[0133] S308, if the refrigerant leakage value includes the refrigerant leakage duration, then when the refrigerant leakage duration is greater than or equal to a preset time threshold, an activation command is generated;

[0134] In this embodiment, a time threshold is preset, which represents a critical point in the duration of refrigerant leakage. If the obtained refrigerant leakage value includes the duration of refrigerant leakage, the duration of refrigerant leakage is compared with the preset time threshold. If the duration of refrigerant leakage is greater than or equal to the preset time threshold, it indicates that the amount of refrigerant leaked by the indoor component is too large, and an activation command is generated at this time.

[0135] S309, according to the opening command, the electric control valve is opened to discharge refrigerant through the discharge port.

[0136] In the embodiments of this application, at least one electrically controlled valve is opened according to the generated opening command to discharge refrigerant in the refrigerant pipeline through the discharge port.

[0137] In this implementation plan, when the refrigerant sensor detects a refrigerant leak in an indoor component, it further determines that the duration of the refrigerant leak is greater than or equal to a preset time threshold before opening the electric control valve to discharge the refrigerant through the vent. This effectively prevents the refrigerant from being discharged due to malfunction of the refrigerant sensor.

[0138] In a preferred embodiment of this application, the chassis of the outdoor component is provided with an opening, which is located adjacent to the discharge port of the electric control valve.

[0139] Specifically, in HVAC equipment, an opening is provided on the chassis of the outdoor component, which is located near the discharge port of the electrically controlled valve to accelerate the diffusion of refrigerant discharged into the outdoor component into the outdoor environment.

[0140] In this implementation scheme, by setting an opening near the discharge port of the electric control valve, the refrigerant discharged to the outdoor components can be further accelerated to diffuse into the outdoor environment.

[0141] In a preferred embodiment of this application, the electrically controlled valve is located on the refrigerant line at its lowest position along the height direction of the outdoor component.

[0142] Specifically, in this HVAC system, the electrically controlled valve is installed on the lowest refrigerant line along the height of the outdoor component. That is, when there is more than one refrigerant line, the electrically controlled valve is installed on the refrigerant line with the lowest horizontal height and closest to the chassis of the outdoor component.

[0143] In this implementation scheme, by placing the electric control valve on the lowest refrigerant pipeline along the height direction of the outdoor component, leaked refrigerant can be quickly discharged to the outside even in complex refrigerant pipeline layout scenarios.

[0144] In a preferred embodiment of this application, the HVAC equipment is an integrated unit, the outdoor component is the outdoor side of the integrated unit, and the indoor component is the indoor side of the integrated unit.

[0145] Specifically, when the HVAC system is a split-type unit, the outdoor component is the outdoor unit of the split-type unit, and the indoor component is the indoor unit of the split-type unit. The outdoor unit and the indoor unit are installed independently in the outdoor environment and the indoor environment, respectively, and refrigerant is transferred between the outdoor unit and the indoor unit through refrigerant pipelines.

[0146] In a preferred embodiment of this application, the HVAC equipment is a split-type unit, the outdoor component is the outdoor unit of the split-type unit, and the indoor component is the indoor unit of the split-type unit.

[0147] Specifically, when the HVAC system is a modular unit, the outdoor component is the outdoor side of the modular unit, and the indoor component is the indoor side of the modular unit. During installation, the modular unit is embedded in the wall with the outdoor side facing the outdoor environment and the indoor side facing the indoor environment; refrigerant is transferred between the outdoor and indoor sides through refrigerant piping.

[0148] In this implementation scheme, when a refrigerant sensor detects a refrigerant leak in an indoor component, the increase in airflow of the indoor fan is determined based on the detected refrigerant leak concentration. A fan operation command is generated based on the increase in airflow, and the operation of the indoor fan is controlled according to the airflow value indicated by the fan operation command. This allows for precise adjustment of the indoor fan's airflow based on the actual refrigerant leak situation, accelerating indoor air circulation and rapidly reducing the concentration of harmful substances indoors.

[0149] It should be emphasized that the embodiments and features described above are not limiting and can be used in combination with other embodiments and features of the present invention. This application involves multiple embodiments, and all features in each embodiment are not limited to the scenario described in a single embodiment without conflict. Features can be arbitrarily combined with each other, and multiple embodiments can also be arbitrarily combined. The combined solution is still within the protection scope of this application.

[0150] The following will be combined with the appendix Figure 10 This application provides a detailed description of a refrigerant leakage control device for HVAC equipment, as provided in an embodiment. It should be noted that... Figure 10 The refrigerant leakage control device in this manual is used to perform the functions described herein. Figures 7-9 The methods shown in the embodiments are illustrated for ease of explanation, showing only the parts relevant to the embodiments of this application. For specific technical details not disclosed, please refer to this specification. Figures 7-9 The example shown.

[0151] Please see Figure 10 This illustration shows a schematic diagram of a refrigerant leakage control device provided in an exemplary embodiment of this application. The refrigerant leakage control device can be implemented as all or part of a device through software, hardware, or a combination of both. The device 10 is applied to a heating, ventilation, and air conditioning (HVAC) system, which includes an outdoor component installed in an outdoor environment and an indoor component installed in an indoor environment. Refrigerant is transferred between the outdoor and indoor components via refrigerant piping. An electrically controlled valve is installed on the refrigerant piping, located within the outdoor component and adjacent to its chassis. The electrically controlled valve controls the opening and closing of the discharge port. The device 10 includes an acquisition unit 101 and a discharge unit 102.

[0152] The acquisition unit 101 is used to acquire the refrigerant leakage value detected by the refrigerant sensor for the indoor component when the refrigerant sensor of the HVAC equipment detects a refrigerant leak in the indoor component.

[0153] The discharge unit 102 is used to generate an opening command based on the refrigerant leakage value, and open the electric control valve according to the opening command to discharge the refrigerant through the discharge port.

[0154] Preferably, when the emission unit 102 is used to generate an activation command based on the refrigerant leakage value, it is also used to:

[0155] If the refrigerant leakage value includes a refrigerant leakage concentration value, then when the refrigerant leakage concentration value is greater than or equal to a preset concentration threshold, an activation command is generated; and / or,

[0156] If the refrigerant leakage value includes the duration of the refrigerant leakage, an activation command is generated when the duration of the refrigerant leakage is greater than or equal to a preset time threshold.

[0157] Preferably, the device 10 further includes a warning unit 103; after the acquisition unit 101 acquires the refrigerant leakage value detected by the refrigerant sensor for the indoor component, the warning unit 103 is used to:

[0158] If the refrigerant leakage value includes the refrigerant leakage concentration value, and the refrigerant leakage concentration value is greater than or equal to the preset alarm threshold, then a fan operation command and a shutdown command are generated.

[0159] The operation of the internal fan of the HVAC equipment is controlled according to the air volume value indicated by the fan operation command;

[0160] The operation of the temperature control component of the HVAC equipment is stopped according to the shutdown command.

[0161] Preferably, when the early warning unit 103 generates a fan operation command if the refrigerant leakage value includes a refrigerant leakage concentration value and the refrigerant leakage concentration value is greater than or equal to a preset alarm threshold, it is further configured to:

[0162] If the refrigerant leakage value includes a refrigerant leakage concentration value, and the refrigerant leakage concentration value is greater than or equal to a preset alarm threshold, then the increase in air volume of the indoor fan is determined based on the refrigerant leakage concentration value.

[0163] A fan operation command is generated based on the increase in air volume.

[0164] Preferably, each of the refrigerant lines in the HVAC system is provided with a cut-off component, and among the cut-off components, the target cut-off component that is located on the same refrigerant line as the electric control valve is further away from the indoor component relative to the electric control valve;

[0165] The device 10 also includes a shut-off unit 104; before the discharge unit 102 is used to open the electrically controlled valve according to the opening command to discharge the refrigerant through the discharge port, the shut-off unit 104 is used to: close each of the shut-off components to shut off each of the refrigerant lines.

[0166] Preferably, the chassis of the outdoor component of the HVAC equipment has an opening, which is located adjacent to the discharge port of the electric control valve.

[0167] Preferably, the electrically controlled valve is located on the refrigerant line at the lowest position along the height direction of the outdoor component.

[0168] In this embodiment, when a refrigerant leak is detected by the refrigerant sensor in the indoor component, an electrically controlled valve located in the outdoor component is opened, allowing the refrigerant in the refrigerant pipeline to be actively discharged to the outdoor environment through the vent. Furthermore, by placing the electrically controlled valve near the chassis of the outdoor component, the refrigerant discharge rate is accelerated, significantly reducing the concentration of leaked refrigerant in the indoor environment and preventing safety issues caused by refrigerant leaks.

[0169] It should be noted that the refrigerant leakage control device provided in the above embodiments is only illustrated by the division of the above functional modules when executing the refrigerant leakage control method. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the equipment can be divided into different functional modules to complete all or part of the functions described above. In addition, the refrigerant leakage control device and the refrigerant leakage control method embodiments provided in the above embodiments belong to the same concept, and the implementation process is detailed in the method embodiments, which will not be repeated here.

[0170] The sequence numbers of the embodiments described above are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. In some cases, the actions or steps described in the claims can be performed in a different order than that shown in the embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0171] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-described functionality. Figures 7-9The method of the illustrated embodiment, for detailed execution process, can be found in [reference needed]. Figures 7-9 The specific details of the illustrated embodiments will not be elaborated here.

[0172] Please refer to Figure 11 This diagram illustrates the structure of a heating, ventilation, and air conditioning (HVAC) device provided in an exemplary embodiment of this specification. The HVAC device in this specification may include one or more components such as a processor 110, a memory 120, an input device 130, an output device 140, and a bus 150. The processor 110, memory 120, input device 130, and output device 140 may be connected via the bus 150.

[0173] Processor 110 may include one or more processing cores. Processor 110 connects to various parts of the HVAC system using various interfaces and lines, and executes various functions of terminal 100 and processes data by running or executing instructions, programs, code sets, or instruction sets stored in memory 120, and by calling data stored in memory 120. Preferably, processor 110 may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). Processor 110 may integrate one or more of a Central Processing Unit (CPU) and a modem. The CPU primarily handles the operating system, user page, and applications; the modem is used for wireless communication. It is understood that the modem may also not be integrated into processor 110, but implemented separately through a communication chip.

[0174] The memory 120 may include random access memory (RAM) or read-only memory (ROM). Preferably, the memory 120 includes non-transitory computer-readable storage medium. The memory 120 can be used to store instructions, programs, code, code sets, or instruction sets. The memory 120 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as touch function, sound playback function, image playback function, etc.), instructions for implementing the various method embodiments described above, etc. The operating system may be the Android system, including systems deeply developed based on the Android system, the iOS system developed by Apple Inc., including systems deeply developed based on the iOS system, or other systems.

[0175] The memory 120 can be divided into operating system space and user space. The operating system runs in the operating system space, while native and third-party applications run in the user space. To ensure that different third-party applications can achieve good running performance, the operating system allocates corresponding system resources to each third-party application. However, different application scenarios within the same third-party application have different requirements for system resources. For example, in local resource loading scenarios, third-party applications have high requirements for disk read speed. Since the operating system and third-party applications are independent of each other, the operating system often cannot promptly perceive the current application scenario of a third-party application, resulting in the operating system's inability to adapt system resources accordingly to the specific application scenario of the third-party application.

[0176] In order for the operating system to distinguish the specific application scenarios of third-party applications, it is necessary to establish data communication between the third-party applications and the operating system. This would allow the operating system to obtain the current scenario information of the third-party applications at any time, and then perform targeted system resource adaptation based on the current scenario.

[0177] The input device 130 is used to receive input instructions or data, and includes, but is not limited to, a keyboard, mouse, camera, microphone, or touch device. The output device 140 is used to output instructions or data, and includes, but is not limited to, a display device and a speaker. In one example, the input device 130 and the output device 140 can be combined, and the input device 130 and the output device 140 can be a touch display screen.

[0178] In addition, those skilled in the art will understand that the structure of the HVAC equipment shown in the above figures does not constitute a limitation on the HVAC equipment. The HVAC equipment may include more or fewer components than shown, or combine certain components, or have different component arrangements. For example, the HVAC equipment may also include radio frequency circuits, input units, sensors, audio circuits, WiFi modules, power supplies, Bluetooth modules, etc., which will not be described in detail here.

[0179] exist Figure 11 In the HVAC equipment shown, the processor 110 can be used to call the placement status detection application stored in the memory 120 and specifically execute the above-described process. Figures 7-9 The method of the illustrated embodiment, for detailed execution process, can be found in [reference needed]. Figures 7-9 The specific details of the illustrated embodiments will not be elaborated here.

[0180] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the methods described above. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0181] The above-disclosed embodiments are merely preferred embodiments of this specification and should not be construed as limiting the scope of this specification. Therefore, any equivalent variations made in accordance with the claims of this specification shall still fall within the scope of this specification.

Claims

1. A method for controlling refrigerant leakage, characterized in that, This invention is applied to HVAC equipment, which includes an outdoor component installed in an outdoor environment and an indoor component installed in an indoor environment. Refrigerant is transmitted between the outdoor component and the indoor component through a refrigerant pipeline. An electric control valve is installed on the refrigerant pipeline. The electric control valve is located inside the outdoor component and adjacent to the chassis of the outdoor component. The electric control valve is used to control the opening and closing of the discharge port. The method includes: When the refrigerant sensor of the HVAC equipment detects a refrigerant leak in the indoor component, the refrigerant leak value detected by the refrigerant sensor for the indoor component is obtained; An opening command is generated based on the refrigerant leakage value, and the electric control valve is opened according to the opening command to discharge the refrigerant through the discharge port.

2. The method according to claim 1, characterized in that, The step of generating the start command based on the refrigerant leakage value includes: If the refrigerant leakage value includes a refrigerant leakage concentration value, then when the refrigerant leakage concentration value is greater than or equal to a preset concentration threshold, an activation command is generated; and / or, If the refrigerant leakage value includes the duration of the refrigerant leakage, an activation command is generated when the duration of the refrigerant leakage is greater than or equal to a preset time threshold.

3. The method according to claim 1, characterized in that, After obtaining the refrigerant leakage value detected by the refrigerant sensor for the indoor component, the method further includes: If the refrigerant leakage value includes the refrigerant leakage concentration value, and the refrigerant leakage concentration value is greater than or equal to the preset alarm threshold, then a fan operation command and a shutdown command are generated. The operation of the internal fan of the HVAC equipment is controlled according to the air volume value indicated by the fan operation command; The operation of the temperature control component of the HVAC equipment is stopped according to the shutdown command.

4. The method according to claim 3, characterized in that, If the refrigerant leakage value includes a refrigerant leakage concentration value, and the refrigerant leakage concentration value is greater than or equal to a preset alarm threshold, then a fan operation command is generated, including: If the refrigerant leakage value includes a refrigerant leakage concentration value, and the refrigerant leakage concentration value is greater than or equal to a preset alarm threshold, then the increase in air volume of the indoor fan is determined based on the refrigerant leakage concentration value. A fan operation command is generated based on the increase in air volume.

5. The method according to claim 1, characterized in that, Each of the refrigerant lines is provided with a cut-off component. Among the cut-off components, the target cut-off component that is located on the same refrigerant line as the electric control valve is further away from the indoor component than the electric control valve. Before opening the electrically controlled valve according to the opening command to discharge the refrigerant through the discharge port, the method further includes: Shut down each of the aforementioned cut-off components to disconnect each of the aforementioned refrigerant lines.

6. The method according to claim 1, characterized in that, The chassis of the outdoor component has an opening, which is located near the discharge port of the electric control valve.

7. The method according to claim 1, characterized in that, Along the height direction of the outdoor component, the electrically controlled valve is located on the refrigerant line at the lowest position.

8. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, The HVAC equipment is used to perform the method as described in any one of claims 1-7, the HVAC equipment comprising: Outdoor components, which are installed in an outdoor environment; An indoor component, which is installed in an indoor environment, is equipped with at least one refrigerant sensor for detecting refrigerant leakage. A refrigerant pipeline is used to transmit refrigerant between the outdoor unit and the indoor unit; an electrically controlled valve is installed on the refrigerant pipeline, the electrically controlled valve is installed inside the outdoor unit and adjacent to the chassis of the outdoor unit, the electrically controlled valve is used to control the opening and closing of the discharge port.

9. The HVAC equipment as described in claim 8, characterized in that, Each of the refrigerant lines is provided with a cut-off component, which is used to cut off the refrigerant line; among the cut-off components, the target cut-off component that is located on the same refrigerant line as the electric control valve is further away from the indoor component than the electric control valve.

10. The HVAC equipment as described in claim 8, characterized in that, Along the height direction of the outdoor component, the electrically controlled valve is located on the refrigerant line at the lowest position.

11. The HVAC equipment as described in claim 8, characterized in that, The chassis of the outdoor component has an opening, which is located near the discharge port of the electric control valve.

12. The HVAC equipment as described in claim 8, characterized in that, The indoor components also include an indoor fan and a temperature control assembly. The indoor fan is used to accelerate the flow of indoor air. The temperature control assembly includes an indoor heat exchanger, and the refrigerant sensor is disposed adjacent to the indoor heat exchanger.

13. The HVAC equipment according to claim 8, characterized in that, The HVAC equipment is a complete unit, the outdoor component is the outdoor side of the complete unit, and the indoor component is the indoor side of the complete unit.

14. The HVAC equipment according to claim 8, characterized in that, The HVAC equipment is a split-type unit, the outdoor component is the outdoor unit of the split-type unit, and the indoor component is the indoor unit of the split-type unit.

15. A refrigerant leakage control device for HVAC equipment, characterized in that, The HVAC equipment includes an outdoor component installed in the outdoor environment and an indoor component installed in the indoor environment. Refrigerant is transmitted between the outdoor component and the indoor component through a refrigerant pipeline. An electric control valve is installed on the refrigerant pipeline. The electric control valve is located inside the outdoor component and adjacent to the chassis of the outdoor component. The electric control valve is used to control the opening and closing of the discharge port. The device includes: an acquisition unit and an emission unit; The acquisition unit is used to acquire the refrigerant leakage value detected by the refrigerant sensor for the indoor component when the refrigerant sensor of the HVAC equipment detects a refrigerant leak in the indoor component. The discharge unit is used to generate an opening command based on the refrigerant leakage value, and open the electric control valve according to the opening command to discharge the refrigerant through the discharge port.

16. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed, implements the method as described in any one of claims 1 to 7.

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