Refrigerant leakage control method, apparatus, air conditioner, and computer-readable storage medium

Abstract

Provided are a refrigerant leakage control method, an apparatus, an air conditioner, a computer-readable storage medium, a computer program product, and a computer program. The refrigerant leakage control method is used for an air conditioner. The air conditioner comprises an indoor unit and an outdoor unit, the outdoor unit being provided with an outdoor fan and a compressor, and the indoor unit being provided with an indoor fan. The indoor unit is provided with a first communication port in communication connection with the outdoor unit. The refrigerant leakage control method for the air conditioner comprises: acquiring a refrigerant leakage concentration of the indoor unit; and, according to the refrigerant leakage concentration of the indoor unit being greater than or equal to a preset leakage protection threshold value, controlling the indoor fan to operate at a preset wind setting, and controlling the indoor unit to output a compressor shutdown signal to the outdoor unit by means of the first communication port so as to shut down the compressor.

Description

Refrigerant leakage control method, device, air conditioner and computer-readable storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent applications 202310768865.1 and 202311249278.8, entitled “REFRIGERANT LEAKAGE CONTROL METHOD, DEVICE, AIR CONDITIONER AND COMPUTER-READABLE STORAGE MEDIUM,” filed on June 27, 2023 and September 25, 2023, respectively, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the technical field of air conditioning, and in particular to a refrigerant leakage control method, device, air conditioner, computer-readable storage medium, computer program product, and computer program. Background Art

[0004] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0005] Due to the influence of factors such as climate and building structure, some air conditioners in the existing market, such as in North America, will mainly use R454B refrigerant to replace R410A refrigerant. R454B refrigerant is a flammable refrigerant and poses a safety risk of ignition when the refrigerant leakage value exceeds the safety limit.

[0006] In the related art, American-style ducted air conditioners in North America usually have indoor and outdoor units that do not communicate with each other, resulting in the outdoor unit being unable to respond to the protection program when a refrigerant leak occurs in the indoor unit.

[0007] Summary of the Invention

[0008] The present disclosure aims to provide a refrigerant leakage control method, apparatus, air conditioner, computer-readable storage medium, computer program product, and computer program to at least address the technical problem of the indoor and outdoor units of American-style ducted air conditioners for the North American market not communicating with each other, resulting in the outdoor unit failing to respond to protection procedures when a refrigerant leak occurs in the indoor unit. This objective is achieved through the following technical solutions:

[0009] A first embodiment of the present disclosure provides a refrigerant leakage control method for an air conditioner, wherein the air conditioner includes an indoor unit and an outdoor unit, the outdoor unit is provided with an outdoor fan and a compressor, the indoor unit is provided with an indoor fan, and the indoor unit is provided with a first communication port for communication with the outdoor unit. The refrigerant leakage control method for the air conditioner includes:

[0010] Obtaining the refrigerant leakage concentration of the indoor unit; and

[0011] According to the refrigerant leakage concentration of the indoor unit being greater than or equal to a preset leakage protection threshold, the indoor fan is controlled to operate at a preset wind speed, and the indoor unit is controlled to output a compressor shutdown signal to the outdoor unit through the first communication port to shut down the compressor.

[0012] According to the refrigerant leakage control method for the air conditioner provided in the embodiment of the present disclosure, a first communication port connected to the outdoor unit is added to the indoor unit, so that the outdoor unit can be communicated with the indoor unit through the first communication port. Therefore, when a refrigerant leakage occurs in the indoor unit and the refrigerant leakage concentration exceeds the refrigerant leakage protection threshold, the outdoor unit can execute the refrigerant protection program in time to reduce the risk of ignition or explosion of the indoor unit.

[0013] Specifically, by acquiring the refrigerant leakage concentration of the indoor unit in real time, if the refrigerant leakage concentration is greater than or equal to a preset leakage protection threshold, the indoor unit presents a safety risk of ignition or explosion. At this point, the indoor fan is forced to operate at a preset wind speed, thereby blowing the refrigerant in the indoor unit into the indoor room, thereby reducing the refrigerant concentration in the indoor unit. Simultaneously, the indoor unit is controlled to send a compressor shutdown signal to the outdoor unit via a first communication port. In response to the compressor shutdown signal, the compressor is forced to shut down, preventing the compressor from continuing to supply refrigerant to the indoor unit. This allows the refrigerant leakage concentration in the indoor unit to rapidly decrease with the operation of the indoor fan, thereby reducing the risk of ignition or explosion in the indoor unit.

[0014] It is understandable that the preset wind speed can be any wind speed from the lowest wind speed to the highest wind speed, as long as the air volume requirement is met.

[0015] In addition, the refrigerant leakage control method for an air conditioner according to an embodiment of the present disclosure may also have the following additional technical features:

[0016] In some embodiments, the refrigerant leakage control method for an air conditioner further includes:

[0017] According to the refrigerant leakage concentration of the indoor unit being less than the preset leakage protection threshold, the indoor unit is controlled to output a compressor standby or running signal through the first communication port, so that the compressor maintains a current operating state.

[0018] In some embodiments, after the step of obtaining the refrigerant leakage concentration of the indoor unit, the refrigerant leakage control method for the air conditioner further includes:

[0019] Controlling an alarm state to be turned on according to the refrigerant leakage concentration of the indoor unit being greater than or equal to a preset alarm threshold;

[0020] The preset alarm threshold is smaller than the preset leakage protection threshold.

[0021] In some embodiments, the step of controlling the internal fan to operate at a preset wind speed includes:

[0022] The internal fan is controlled to operate at the highest wind speed.

[0023] In some embodiments, the refrigerant leakage control method for an air conditioner further includes:

[0024] Control the external fan to operate for a preset time.

[0025] An embodiment of the second aspect of the present disclosure provides a control device for an air conditioner, comprising: a memory and a processor, wherein the memory is configured to store a computer program, and when the computer program is executed by the processor, the steps of the refrigerant leakage control method for the air conditioner are implemented as described in any embodiment of the first aspect.

[0026] A third embodiment of the present disclosure provides an air conditioner, comprising:

[0027] An indoor unit and an outdoor unit, wherein the outdoor unit is provided with an external fan and a compressor, and the indoor unit is provided with an internal fan;

[0028] a wired controller, communicatively connected to the indoor unit;

[0029] a first communication port, provided on the indoor unit, wherein the first communication port is communicatively connected to the outdoor unit;

[0030] a refrigerant sensor, disposed in the indoor unit;

[0031] an alarm, provided in the wired controller or the indoor unit; and

[0032] A control device for an air conditioner as described in any embodiment of the second aspect, wherein the control device is electrically connected to the indoor unit, the indoor fan, the outdoor fan, the compressor and the refrigerant sensor, and is used to implement the refrigerant leakage control method for the air conditioner as described in any embodiment of the first aspect when executing a computer program.

[0033] In some embodiments, the indoor unit and the outdoor unit are both provided with a first operating frequency signal port and a second operating frequency signal port, the two first operating frequency signal ports are communicatively connected to each other, and the two second operating frequency signal ports are communicatively connected to each other.

[0034] In some embodiments, the wired controller, the indoor unit, and the outdoor unit are all provided with a common port, the wired controller is communicatively connected to the common port of the indoor unit, and the indoor unit is communicatively connected to the common port of the outdoor unit.

[0035] In some embodiments, the wired controller, the indoor unit and the outdoor unit are all provided with a defrost signal port, the wired controller is communicatively connected to the defrost signal port of the indoor unit, and the indoor unit is communicatively connected to the defrost signal port of the outdoor unit.

[0036] In some embodiments, the wired controller, the indoor unit and the outdoor unit are all provided with a four-way valve reversing signal port, the wired controller is communicatively connected to the four-way valve reversing signal port of the indoor unit, and the indoor unit is communicatively connected to the four-way valve reversing signal port of the outdoor unit.

[0037] An embodiment of the fourth aspect of the present disclosure provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the refrigerant leakage control method for the air conditioner as described in any embodiment of the first aspect is implemented.

[0038] A fifth aspect of the present disclosure provides a computer program product, including a computer program, which, when executed by a processor, implements the refrigerant leakage control method for an air conditioner as described in any embodiment of the first aspect.

[0039] An embodiment of a sixth aspect of the present disclosure provides a computer program, including computer program code. When the computer program code is run on a computer, the computer executes the refrigerant leakage control method for the air conditioner as described in any embodiment of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0041] FIG1 is a schematic flow chart showing a method for controlling refrigerant leakage of an air conditioner according to some embodiments of the present disclosure;

[0042] FIG2 is a flow chart showing a method for controlling refrigerant leakage of an air conditioner according to some embodiments of the present disclosure;

[0043] FIG3 is a flow chart showing a method for controlling refrigerant leakage of an air conditioner according to some embodiments of the present disclosure;

[0044] FIG4 is a schematic flow chart showing a method for controlling refrigerant leakage of an air conditioner according to some embodiments of the present disclosure;

[0045] FIG5 shows a schematic diagram of signal line connections between an indoor unit, a wired controller, and an outdoor unit according to some embodiments of the present disclosure;

[0046] FIG6 shows a schematic diagram of signal line connections between an indoor unit, a wired controller, and an outdoor unit according to some embodiments of the present disclosure;

[0047] FIG7 shows a schematic diagram of signal line connections between an indoor unit, a wired controller, and an outdoor unit according to some embodiments of the present disclosure;

[0048] FIG8 shows a schematic diagram of signal line connections between an indoor unit, a wired controller, and an outdoor unit according to some embodiments of the present disclosure;

[0049] FIG9 shows a schematic structural block diagram of an air conditioner according to some embodiments of the present disclosure;

[0050] FIG10 shows a schematic block diagram of the structure of a control device provided according to some embodiments of the present disclosure.

[0051] The accompanying drawings are numbered as follows: 100, air conditioner; 200, control device; 110, indoor unit; 120, wired controller; 130, outdoor unit; 140, refrigerant sensor; 150, alarm; 210, processor; 220, memory; 111, indoor fan; 151, first operating frequency signal port; 152, second operating frequency signal port; 11, power supply signal port; 12, common port; 13, indoor fan start signal port; 14, four-way valve reversing signal port; 15, first communication port; 16, defrost signal port. DETAILED DESCRIPTION

[0052] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0053] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0054] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0055] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "below" another element or feature would then be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0056] Please refer to Figure 1. The first aspect embodiment of the present disclosure proposes a refrigerant leakage control method for an air conditioner. The air conditioner includes an indoor unit and an outdoor unit. The outdoor unit is provided with an outdoor fan and a compressor. The indoor unit is provided with an indoor fan. The indoor unit is provided with a first communication port for communication with the outdoor unit. The refrigerant leakage control method for the air conditioner includes steps S10 to S30.

[0057] Step S10: Obtain the refrigerant leakage concentration of the indoor unit.

[0058] Step S20: Determine whether the refrigerant leakage concentration of the indoor unit is greater than or equal to a preset leakage protection threshold.

[0059] Step S30: Based on the refrigerant leakage concentration of the indoor unit being greater than or equal to the preset leakage protection threshold, the indoor fan is controlled to operate at a preset wind speed, and the indoor unit is controlled to output a compressor shutdown signal to the outdoor unit through the first communication port to shut down the compressor.

[0060] According to the refrigerant leakage control method for the air conditioner provided in the embodiment of the present disclosure, a first communication port connected to the outdoor unit is added to the indoor unit, so that the outdoor unit can be communicated with the indoor unit through the first communication port. Therefore, when a refrigerant leakage occurs in the indoor unit and the refrigerant leakage concentration exceeds the refrigerant leakage protection threshold, the outdoor unit can execute the refrigerant protection program in time to reduce the risk of ignition or explosion of the indoor unit.

[0061] Specifically, by obtaining the refrigerant leakage concentration of the indoor unit in real time, if the refrigerant leakage concentration is greater than or equal to the preset leakage protection threshold, it means that the refrigerant leakage concentration in the indoor unit has exceeded the refrigerant leakage protection threshold, and the indoor unit has a safety risk of ignition or explosion. At this time, the indoor fan is controlled to run at a preset wind speed, so that the refrigerant in the indoor unit is blown into the room to reduce the refrigerant concentration of the indoor unit, and the indoor unit is controlled to send a compressor shutdown signal to the outdoor unit through the first communication port, and the compressor is forced to stop, so that the compressor can no longer continue to supply refrigerant to the indoor unit, so that the refrigerant leakage concentration in the indoor unit is rapidly reduced under the operation of the indoor fan, thereby reducing the risk of ignition or explosion caused by the refrigerant leakage concentration in the indoor unit exceeding the refrigerant leakage protection threshold.

[0062] Referring to FIG. 2 , according to some embodiments of the present disclosure, the refrigerant leakage control method for an air conditioner further includes:

[0063] Step S40: Based on the refrigerant leakage concentration of the indoor unit being less than the preset leakage protection threshold, the indoor unit is controlled to keep outputting a compressor standby or running signal to the outdoor unit through the first communication port, so that the compressor maintains the current operating state.

[0064] In the embodiment, it can be understood that if the refrigerant leakage concentration of the indoor unit is less than the preset leakage protection threshold, it means that there is no refrigerant leakage in the indoor unit, or the refrigerant leakage concentration is small, and the refrigerant leakage protection program is not triggered at this time, then the indoor unit is controlled to output the compressor standby or running signal through the first communication port, so that the compressor maintains the current operating state, and the indoor fan maintains the current wind speed operation.

[0065] Referring to FIG. 3 , according to some embodiments of the present disclosure, after the step of obtaining the refrigerant leakage concentration of the indoor unit, the refrigerant leakage control method for the air conditioner further includes:

[0066] Step S50: Controlling an alarm state to be turned on according to the refrigerant leakage concentration of the indoor unit being greater than or equal to a preset alarm threshold;

[0067] The preset alarm threshold is lower than the preset leakage protection threshold.

[0068] In the embodiment, as an example, the air conditioner further includes an alarm device, which may be an alarm that uses voice broadcasting or emits warning lights.

[0069] It is worth noting that when the alarm device is activated, the refrigerant leakage concentration in the indoor unit falls below a preset leakage alarm threshold, prompting operators to promptly inspect and repair the indoor unit. In response to detecting that the refrigerant leakage concentration in the indoor unit has reached a preset leakage protection threshold, the refrigerant leakage protection program is immediately activated. In response to the refrigerant leakage concentration falling below the preset leakage protection threshold, the alarm device is deactivated.

[0070] According to some embodiments of the present disclosure, in the step of controlling the internal fan to operate at a preset wind speed, the preset wind speed is the highest wind speed of the internal fan.

[0071] In an embodiment, in response to the refrigerant leakage concentration in the indoor unit exceeding the refrigerant leakage protection threshold, the efficiency of blowing the leaked refrigerant in the indoor unit into the room is improved by controlling the indoor fan to operate at the highest wind speed, so as to quickly reduce the refrigerant leakage concentration in the indoor unit.

[0072] Referring to FIG. 4 , according to some embodiments of the present disclosure, the refrigerant leakage control method for an air conditioner further includes:

[0073] Step S60: Control the outdoor fan to operate for a preset time period.

[0074] In an embodiment, as an example, the preset duration may be set within a range of 3 minutes to 15 minutes.

[0075] The compressor generates a lot of heat during operation. When the compressor suddenly stops, the temperature of the outdoor unit is still high. At this time, the outdoor fan is controlled to continue running for a preset time, for example, 5 minutes, 10 minutes or 15 minutes, to maintain continuous heat dissipation of the outdoor unit after the compressor stops. After running for the preset time, the outdoor fan is controlled to stop running, which helps to ensure the performance of various equipment components in the outdoor unit such as the compressor, outdoor heat exchanger, etc.

[0076] A first embodiment of the present disclosure provides a refrigerant leakage control method for an air conditioner, which is applicable to the air conditioner described in any of the above embodiments. The refrigerant leakage control method for the air conditioner includes:

[0077] Obtain the refrigerant leakage concentration of the indoor unit;

[0078] When the refrigerant leakage concentration of the indoor unit is greater than or equal to the preset leakage protection threshold, the control starts the alarm state;

[0079] According to the alarm duration being longer than the preset duration, the indoor fan is controlled to operate at the highest wind speed, and the indoor unit is controlled to output a compressor stop signal to the outdoor unit through the first communication port so that the compressor is stopped, and the outdoor fan is controlled to operate for the preset duration; and

[0080] According to the refrigerant leakage concentration of the indoor unit being less than the preset leakage protection threshold, the indoor unit is controlled to output a compressor operation signal to the outdoor unit through the first communication port, so that the compressor maintains the current operation state.

[0081] Please refer to Figure 10. The second aspect embodiment of the present disclosure provides a control device 200 for an air conditioner 100, including: a memory 220 and a processor 210. The memory 220 is configured to store a computer program. When the computer program is executed by the processor 210, the steps of the refrigerant leakage control method of the air conditioner 100 as in any embodiment of the first aspect are implemented.

[0082] Please refer to Figure 9. The third embodiment of the present disclosure provides an air conditioner 100, including an indoor unit 110, a wired controller 120, an outdoor unit 130, a refrigerant sensor 140 and an alarm 150 and a control device 200 as described in any embodiment of the second aspect.

[0083] Among them, the indoor unit 110 is communicatively connected with the wire controller 120; the indoor unit 110 is provided with an indoor fan 111 and a first communication port 15; the outdoor unit 130 is provided with an outdoor fan and a compressor; the first communication port 15 is communicatively connected with the outdoor unit 130; the refrigerant sensor 140 is provided in the indoor unit 110; the alarm 150 is provided in the wire controller 120 or the indoor unit 110; the control device 200 is electrically connected with the indoor unit 110, the wire controller 120, the indoor fan 111, the outdoor fan, the compressor, the refrigerant sensor 140 and the alarm 150, and is used to implement the refrigerant leakage control method of the air conditioner as any embodiment of the first aspect when executing a computer program.

[0084] In the embodiment, both the indoor unit 110 and the outdoor unit 130 are provided with a first communication port 15 , and the two first communication ports 15 are communicatively connected to each other.

[0085] In some embodiments, referring to FIG5 , the wired controller 120 and the indoor unit 110 are both provided with a power supply signal port 11 and an indoor fan start signal port 13, the two power supply signal ports 11 are communicatively connected, the two indoor fan start signal ports 13 are communicatively connected, and the indoor unit 110 can send a power supply signal to the wired controller 120 through the power supply signal port 11; the wired controller 120, the indoor unit 110 and the outdoor unit 130 are all provided with a common port 12, the common ports 12 are communicatively connected and used for grounding; the wired controller 120, the indoor unit 110 and the outdoor unit 130 are all provided with a defrost signal port 16 and a four-way valve reversing signal port 14, the defrost signal port 16 on the wired controller 120 is communicatively connected to the defrost signal ports 16 on the indoor unit 110 and the outdoor unit 130, respectively, and the four-way valve reversing signal port 14 on the wired controller 120 is communicatively connected to the four-way valve reversing signal ports 14 on the indoor unit 110 and the outdoor unit 130, respectively.

[0086] For the convenience of explanation, the first communication port 15 is denoted as Y, the common port 12 is denoted as C, the defrost signal port 16 is denoted as W, and the four-way valve reversing port is denoted as B.

[0087] The Y port between wired controller 120 and outdoor unit 130 is no longer connected. The C, B, and W ports of outdoor unit 130 remain connected to the C, B, and W ports of wired controller 120. The B signal of outdoor unit 130 is provided by wired controller 120. In defrost mode, the W signal of outdoor unit 130 is sent to wired controller 120, which then sends it to indoor unit 110. Because the refrigerant leak protection function is in the OFF state, the indoor motor maintains its current state (running or stopped). The Y, G, and B signals sent from wired controller 120 to indoor unit 110 remain in their current state (continuously sent or disconnected). The Y signal sent from indoor unit 110 to outdoor unit 130 also remains in its current state (continuously sent or disconnected). Based on the refrigerant leakage protection program, the program will be in the ON (trigger) state. Regardless of whether the wired controller 120 sends Y, G, or B signals to the indoor unit 110, the indoor fan 111 will be forced to run at the wind speed set by the protection program, and the indoor unit 110 will output a compressor shutdown signal to the outdoor unit 130. In response to the compressor shutdown signal, the compressor will be forced to shut down.

[0088] Please refer to Figure 6. According to some embodiments of the present disclosure, the wired controller 120, the indoor unit 110 and the outdoor unit 130 are all provided with a common port 12. The common port 12 between the wired controller 120 and the indoor unit 110 is communicatively connected, and the common port 12 between the indoor unit 110 and the outdoor unit 130 is communicatively connected.

[0089] In some embodiments, the wired controller 120, the indoor unit 110 and the outdoor unit 130 are all provided with a defrost signal port 16, the defrost signal port 16 between the wired controller 120 and the indoor unit 110 is communicatively connected, and the defrost signal port 16 between the indoor unit 110 and the outdoor unit 130 is communicatively connected.

[0090] In some embodiments, the wired controller 120, the indoor unit 110 and the outdoor unit 130 are all provided with a four-way valve reversing signal port 14, the four-way valve reversing signal port 14 between the wired controller 120 and the indoor unit 110 is communicatively connected, and the four-way valve reversing signal port 14 between the indoor unit 110 and the outdoor unit 130 is communicatively connected.

[0091] In the embodiment, the C port serves as the common port 12, and the Y signal (compressor start signal) and the B signal (four-way valve reversing signal) required for the operation of the outdoor unit 130 are no longer provided by the wired controller 120, but are sent by the wired controller 120 to the indoor unit 110, and then by the indoor unit 110 to the outdoor unit 130; and under the defrost mode condition, the outdoor unit 130 no longer sends the W signal (defrost signal) to the wired controller 120 and then to the indoor unit 110, but is sent directly by the outdoor unit 130 to the indoor unit 110.

[0092] In response to the protection program triggering protection by the refrigerant sensor 140 of the indoor unit 110, the indoor unit 110 automatically disconnects the Y signal, and the outdoor unit 130 stops the compressor due to the lack of the Y signal, thereby achieving automatic shutdown protection of the outdoor unit 130.

[0093] Please refer to Figures 7 and 8. According to some embodiments of the present disclosure, the indoor unit 110 and the outdoor unit 130 are both provided with a first operating frequency signal port 151 and a second operating frequency signal port 152. The two first operating frequency signal ports 151 are communicatively connected to each other, and the two second operating frequency signal ports 152 are communicatively connected to each other.

[0094] In this embodiment, the compressor is, for example, a two-stage compressor. A two-stage compressor can be composed of two compressors or a single compressor with two stages, with one or two cylinders acting as high-pressure cylinders and the remaining cylinders acting as low-pressure cylinders. In other words, the air conditioner 100 has a two-stage compressor refrigeration cycle, in which the refrigerant from the evaporator is compressed twice by the low-pressure and high-pressure compressors before entering the condenser. An intercooler is provided between the two compression cycles.

[0095] As an example, the first operating frequency signal port 151 is used to output a low-frequency operating signal of the compressor, and the second operating frequency port is used to output a high-frequency operating signal of the compressor.

[0096] For ease of explanation, the first operating frequency signal port 151 and the second operating frequency signal port 152 are denoted as Y1 and Y2, respectively. By providing the indoor unit 110 and the outdoor unit 130 with two ports, Y1 and Y2, respectively, and connecting the two ports to each other via signal lines, the indoor fan 111 maintains its current state as long as the refrigerant leakage protection program is not triggered. The Y1, Y2, G, and B signals sent by the wired controller 120 to the indoor unit 110 maintain their current state (continuously sent or disconnected), and the Y1 and Y2 signals sent by the indoor unit 110 to the outdoor unit 130 also maintain their current state (continuously sent or disconnected). Based on the refrigerant leakage protection program triggering, regardless of whether the wired controller 120 sends Y1, Y2, G, B signals to the indoor unit 110, the indoor fan 111 is forced to run according to the wind speed set by the protection program, and the indoor unit 110 outputs a compressor shutdown signal to the outdoor unit 130, that is, disconnects the Y1 signal, or disconnects the Y1 and Y2 signals. If the outdoor unit 130 has no Y1 or no Y1 and Y2 signals, the compressor will be forced to stop.

[0097] The fourth embodiment of the present disclosure provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by the processor 210, a refrigerant leakage control method for the air conditioner 100 as described in any one of the embodiments of the first embodiment is implemented.

[0098] A fifth aspect of the present disclosure provides a computer program product, including a computer program, which, when executed by a processor, implements a refrigerant leakage control method for an air conditioner according to any one of the first aspects.

[0099] An embodiment of a sixth aspect of the present disclosure provides a computer program, including computer program code. When the computer program code runs on a computer, the computer executes the refrigerant leakage control method for an air conditioner according to any embodiment of the first aspect.

[0100] It should be noted that the explanations of the refrigerant leakage control method and device for the air conditioner in the aforementioned embodiments are also applicable to the computer-readable storage medium, computer program product and computer program in the embodiments of the present disclosure, and will not be repeated here.

[0101] All embodiments of the present disclosure may be implemented individually or in combination with other embodiments, and are all considered to be within the scope of protection claimed by the present disclosure.

[0102] In an embodiment, examples (non-exhaustive list) of computer-readable storage media include the following: an electrical connection portion having one or more wires (electronic device), a portable computer disk cartridge (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM, or flash memory), a fiber optic device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable storage medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0103] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, devices (systems), or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-readable program code.

[0104] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0105] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0106] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0107] The above description is merely a preferred embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A refrigerant leakage control method for an air conditioner, the air conditioner comprising an indoor unit and an outdoor unit, the outdoor unit being provided with an outdoor fan and a compressor, the indoor unit being provided with an indoor fan, wherein the indoor unit is provided with a first communication port connected to the outdoor unit for communication, the refrigerant leakage control method for the air conditioner comprising: Obtaining the refrigerant leakage concentration of the indoor unit; and According to the refrigerant leakage concentration of the indoor unit being greater than or equal to a preset leakage protection threshold, the indoor fan is controlled to operate at a preset wind speed, and the indoor unit is controlled to output a compressor shutdown signal to the outdoor unit through the first communication port to shut down the compressor.

2. The refrigerant leakage control method for an air conditioner according to claim 1, wherein the refrigerant leakage control method for an air conditioner further comprises: According to the refrigerant leakage concentration of the indoor unit being less than the preset leakage protection threshold, the indoor unit is controlled to keep outputting a compressor standby or running signal to the outdoor unit through the first communication port, so that the compressor maintains a current operating state.

3. The refrigerant leakage control method for an air conditioner according to claim 1 or 2, wherein after the step of obtaining the refrigerant leakage concentration of the indoor unit, the refrigerant leakage control method for an air conditioner further comprises: According to the refrigerant leakage concentration of the indoor unit being greater than or equal to a preset alarm threshold, controlling to turn on the alarm state; Wherein, the preset alarm threshold is smaller than the preset leakage protection threshold.

4. The refrigerant leakage control method for an air conditioner according to any one of claims 1 to 3, wherein in the step of controlling the indoor fan to operate at a preset wind speed, the preset wind speed is the highest wind speed of the indoor fan.

5. The refrigerant leakage control method for an air conditioner according to any one of claims 1 to 4, wherein the refrigerant leakage control method for an air conditioner further comprises: Control the external fan to operate for a preset time.

6. A control device for an air conditioner, comprising: A memory and a processor, wherein the memory is configured to store a computer program, and when the computer program is executed by the processor, the steps of the refrigerant leakage control method for the air conditioner as described in any one of claims 1 to 5 are implemented.

7. An air conditioner, comprising: An indoor unit and an outdoor unit, wherein the outdoor unit is provided with an external fan and a compressor, and the indoor unit is provided with an internal fan; A wired controller, communicatively connected to the indoor unit; A first communication port is provided on the indoor unit, and the first communication port is communicatively connected with the outdoor unit; A refrigerant sensor is disposed in the indoor unit; An alarm device, provided in the wired controller or the indoor unit; and The control device of the air conditioner as claimed in claim 6, wherein the control device is electrically connected to the indoor unit, the indoor fan, the outdoor fan, the compressor and the refrigerant sensor, and is used to implement the refrigerant leakage control method of the air conditioner as claimed in any one of claims 1 to 5 when executing a computer program.

8. The air conditioner according to claim 7, wherein the indoor unit and the outdoor unit are both provided with a first operating frequency signal port and a second operating frequency signal port, the two first operating frequency signal ports are communicatively connected to each other, and the two second operating frequency signal ports are communicatively connected to each other.

9. The air conditioner according to claim 7 or 8, wherein the wire controller, the indoor unit and the outdoor unit are all provided with a common port, the wire controller is communicatively connected with the common port of the indoor unit, and the indoor unit is communicatively connected with the common port of the outdoor unit.

10. The air conditioner according to any one of claims 7 to 9, wherein the wire controller, the indoor unit and the outdoor unit are all provided with a defrost signal port, the wire controller is communicatively connected to the defrost signal port of the indoor unit, and the indoor unit is communicatively connected to the defrost signal port of the outdoor unit.

11. The air conditioner according to any one of claims 7 to 10, wherein the wire controller, the indoor unit and the outdoor unit are all provided with a four-way valve reversing signal port, the wire controller is communicatively connected with the four-way valve reversing signal port of the indoor unit, and the indoor unit is communicatively connected with the four-way valve reversing signal port of the outdoor unit.

12. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the refrigerant leakage control method of the air conditioner according to any one of claims 1 to 5 is implemented.

13. A computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the refrigerant leakage control method for an air conditioner according to any one of claims 1 to 5 is implemented.

14. A computer program, comprising computer program codes, which, when executed on a computer, enable the computer to execute the refrigerant leakage control method for an air conditioner according to any one of claims 1 to 5.

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