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

Abstract

The invention relates to the technical field of air conditioners, and provides a refrigerant leakage control method and device, an air conditioner and a computer readable storage medium. The refrigerant leakage control method is used for the air conditioner, an outdoor fan of the air conditioner is arranged on the outdoor side, an indoor fan is arranged in an indoor unit installation room, the indoor fan is provided with a first air pipe communicating with a user room and a second air pipe with the first end communicating with the outdoor side, and the second end of the second air pipe is located in the indoor unit installation room. The first air pipe is provided with a first air brake, and the second air pipe is provided with a second air brake; the refrigerant leakage control method comprises the steps that the refrigerant concentration of an indoor unit installation room and the refrigerant concentration of a user room are obtained; at least one of the refrigerant concentration of the user room and the refrigerant concentration of the indoor unit installation room is larger than or equal to a refrigerant leakage alarm value; at least controlling the second air brake to open. According to the technical scheme, the risk of explosion or ignition when the refrigerant in the house leaks can be reduced.

Description

Technical Field

[0001] The present application relates to the field of air conditioning technology, and in particular to a refrigerant leakage control method, device, air conditioner and computer-readable storage medium. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] At present, due to the influence of factors such as climate and building structure, the layout of air conditioners is different. In the existing market, such as some air conditioning systems in North America, the outdoor fan of the household air conditioning system is usually installed on the outdoor side, and a separate room in the house is provided to house the indoor fan. The indoor fan supplies air to each user's room through the air duct.

[0004] In the related art, HC-based refrigerants commonly used in air-conditioning systems, such as R290 and R32, are flammable gases. When the refrigerant leakage concentration in the user's room or the room where the indoor unit is installed reaches a certain value, it is easy to explode or ignite. Therefore, necessary measures need to be taken to quickly discharge the refrigerant leaked from the air conditioner to reduce the risk of explosion or ignition when the air conditioner leaks refrigerant. Summary of the invention

[0005] The object of the present invention is to provide a refrigerant leakage control method, device, air conditioner and computer-readable storage medium, which are used to quickly discharge the refrigerant to the outdoor side when the refrigerant leaks, thereby reducing the risk of explosion or ignition when the refrigerant leaks. This object is achieved through the following technical solutions:

[0006] A first aspect of the present invention provides a refrigerant leakage control method for an air conditioner, wherein the air conditioner comprises an outdoor fan and an indoor fan connected to the outdoor fan, wherein the outdoor fan is installed on the outdoor side, and the indoor fan is installed in the indoor unit installation room; the indoor fan is provided with a first air duct connected to the user room, and is provided with a second air duct having a first end connected to the outdoor side; the second end of the second air duct is located in the indoor unit installation room, and is selectively connected to the first air duct; the first air duct is provided with a first air damper, and the second air duct is provided with a second air damper, and the refrigerant leakage control method for the air conditioner comprises:

[0007] Obtaining the refrigerant concentration of the room where the indoor unit is installed and the refrigerant concentration of the user's room;

[0008] At least one of the refrigerant concentration in the user's room and the refrigerant concentration in the room where the indoor unit is installed is greater than or equal to a refrigerant leakage alarm value;

[0009] At least the second damper is controlled to be opened. According to the refrigerant leakage control method of the air conditioner provided by the present invention, at least one of the refrigerant concentration in the user's room and the refrigerant concentration in the indoor unit installation room is greater than or equal to the refrigerant leakage alarm value, that is, the refrigerant concentration in the user's room is greater than or equal to the refrigerant leakage alarm value, or the refrigerant concentration in the indoor unit installation room is greater than the preset value, or the refrigerant concentration in the user's room and the indoor unit installation room are both greater than the refrigerant leakage alarm value. Among them, when only the refrigerant concentration in the indoor unit installation room is greater than or equal to the refrigerant leakage alarm value, it means that the safety risk of refrigerant leakage in the user's room is low, but the refrigerant leakage concentration in the indoor unit installation room has reached the point where protective measures need to be taken, and the second damper on the second air duct can be opened, and the first damper on the first air duct can be closed to control the indoor fan to exhaust to the outdoor side, and stop ventilation to the user's room, so that the refrigerant leaked in the indoor unit installation room is quickly discharged to the outdoor side, and the refrigerant can be prevented from being transmitted to the user's room. In addition, the refrigerant concentration in the indoor unit installation room can be reduced to reduce the risk of explosion or ignition due to the large local concentration of refrigerant in the indoor unit installation room. When the refrigerant concentration in the user's room is greater than or equal to the refrigerant leakage alarm value, the second damper and the first damper are controlled to open, so that the refrigerant in the user's room can be drained to the outside through the first duct and the second duct. When the refrigerant concentration in the user's room and the room where the indoor unit is installed are both greater than the refrigerant leakage alarm value, the second damper and the first damper can be opened first to drain the refrigerant in the user's room to the outside first. When the refrigerant concentration in the user's room decreases to less than the refrigerant leakage alarm value, the second duct is disconnected from the first duct, the first damper is closed at the same time, and the second damper is opened to discharge the refrigerant in the room where the indoor unit is installed to the outside, and prevent the refrigerant in the room where the indoor unit is installed from entering the user's room. Since the outdoor fan is running continuously, the refrigerant discharged to the outside can be quickly dispersed to reduce the risk of dangerous refrigerant accumulation on the outside.

[0010] In some embodiments of the present invention, the step of activating an alarm according to at least one of the refrigerant concentration in the user's room and the refrigerant concentration in the room where the indoor unit is installed being greater than or equal to a refrigerant leakage alarm value comprises: activating an alarm according to the refrigerant concentration in the user's room being less than the refrigerant leakage alarm value and the refrigerant concentration in the room where the indoor unit is installed being greater than or equal to the refrigerant leakage alarm value;

[0011] If the alarm duration is longer than the preset duration, the second damper is opened to keep the outdoor fan running continuously, and the first damper is closed.

[0012] In addition, the refrigerant leakage control method of the air conditioner according to the present invention may also have the following additional technical features:

[0013] In some embodiments of the present invention, the refrigerant leakage control method of the air conditioner further includes:

[0014] When the refrigerant concentration in the room where the indoor unit is installed decreases to less than the refrigerant leakage alarm value, and the ratio of the refrigerant concentration in the room where the indoor unit is installed to the refrigerant leakage alarm value is less than 90%, the alarm is canceled, the first damper is opened, and the second damper is closed.

[0015] In some embodiments of the present invention, before executing the steps of releasing the alarm, opening the first damper, and closing the second damper, the refrigerant leakage control method of the air conditioner further includes:

[0016] If the ratio of the refrigerant concentration in the user's room to the refrigerant leakage alarm value is less than 90%, the alarm is canceled, the first damper is opened, and the second damper is closed.

[0017] In some embodiments of the present invention, the refrigerant leakage control method of the air conditioner further includes:

[0018] If the refrigerant concentration in the user's room is greater than the refrigerant leakage alarm value, an alarm is activated;

[0019] If the alarm duration is longer than the preset duration, the second damper is opened to keep the outdoor fan running continuously and the first damper is kept in the open state.

[0020] In some embodiments of the present invention, the refrigerant leakage control method of the air conditioner also includes: according to the refrigerant concentration in the user room decreasing to less than the refrigerant leakage alarm value, and the ratio of the refrigerant concentration in the user room to the refrigerant leakage alarm value is less than 90%, the alarm is canceled and the second damper is closed.

[0021] In some embodiments of the present invention, before performing the step of releasing the alarm and closing the second damper, the refrigerant leakage control method of the air conditioner further includes:

[0022] According to the refrigerant concentration in the room where the indoor unit is installed being less than the refrigerant leakage alarm value, and the ratio of the refrigerant concentration in the room where the indoor unit is installed to the refrigerant leakage alarm value being less than 90%, the alarm is canceled and the second damper is closed.

[0023] In some embodiments of the present invention, the refrigerant leakage control method of the air conditioner further includes:

[0024] According to the refrigerant concentration in the user's room being less than the refrigerant leakage alarm value, and the refrigerant concentration in the room where the indoor unit is installed being less than the refrigerant leakage alarm value, the second damper is kept closed, and the first damper is kept open.

[0025] A second aspect of the present invention 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 a refrigerant leakage control method for an air conditioner as described in any one of the implementation methods of the first aspect can be implemented.

[0026] A third aspect of the present invention provides an air conditioner, comprising:

[0027] An outdoor fan and an indoor fan, wherein the outdoor fan is arranged at the outdoor side, the indoor fan is connected to the outdoor fan, and the indoor fan is arranged in the indoor unit installation room; the indoor fan is provided with a first air duct connected to the user room, and is provided with a second air duct having a first end connected to the outdoor side; the second end of the second air duct is located in the indoor unit installation room, and is selectively connected to the first air duct; the first air duct is provided with a first air damper, and the second air duct is provided with a second air damper;

[0028] A first refrigerant sensor is provided in the user room and is used to obtain the refrigerant concentration in the user room;

[0029] A second refrigerant sensor is provided in the room where the indoor unit is installed, and is used to obtain the refrigerant concentration in the room where the indoor unit is installed;

[0030] an alarm, electrically connected to the first refrigerant sensor and the second refrigerant sensor; and

[0031] As described in the second aspect of the implementation manner, the control device of the air conditioner is electrically connected to the first refrigerant sensor, the second refrigerant sensor, the alarm, the outdoor fan, the indoor fan, the first damper and the second damper, and is used to implement the refrigerant leakage control method of the air conditioner as described in any one of the implementation manners of the first aspect when executing a computer program.

[0032] In some embodiments of the present invention, an outlet of the second air duct faces the outdoor fan.

[0033] A fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, a refrigerant leakage control method for an air conditioner as described in any one of the embodiments of the first aspect is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0035] Figure 1 The flowchart of the refrigerant leakage control method according to some embodiments of the present invention is schematically shown;

[0036] Figure 2 The flowchart of the refrigerant leakage control method according to some embodiments of the present invention is schematically shown;

[0037] Figure 3 The flowchart of the refrigerant leakage control method according to some embodiments of the present invention is schematically shown;

[0038] Figure 4 The flowchart of the refrigerant leakage control method according to some embodiments of the present invention is schematically shown;

[0039] Figure 5 The flowchart of the refrigerant leakage control method according to some embodiments of the present invention is schematically shown;

[0040] Figure 6 The flowchart of the refrigerant leakage control method according to some embodiments of the present invention is schematically shown;

[0041] Figure 7 The flowchart of the refrigerant leakage control method according to some embodiments of the present invention is schematically shown;

[0042] Figure 8 The flowchart of the refrigerant leakage control method according to some embodiments of the present invention is schematically shown;

[0043] Fig. 9 The flowchart of the refrigerant leakage control method according to some embodiments of the present invention is schematically shown;

[0044] Fig.10 Schematically shows a structural schematic block diagram of an air conditioner in some embodiments of the present invention;

[0045] Fig.11 A schematic structural block diagram of a control device according to some embodiments of the present invention is schematically shown.

[0046] The reference numerals are as follows:

[0047] 100. air conditioner; 200. control device;

[0048] 110, indoor fan; 120, outdoor fan; 130, first refrigerant sensor; 140, second refrigerant sensor; 150, alarm; 210, processor; 220, memory;

[0049] 111. First air duct; 112. Second air duct. DETAILED DESCRIPTION

[0050] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the 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. On the contrary, these embodiments are provided in order 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.

[0051] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments 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 "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence 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 interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0052] 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, 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.

[0053] For ease of description, spatial 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 figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0054] In the related art, HC-based refrigerants commonly used in air-conditioning systems, such as R290 and R32, are flammable gases. When the refrigerant leakage concentration in the user's room or the room where the indoor unit is installed reaches a certain value, it is easy to explode or ignite. Therefore, necessary measures need to be taken to quickly discharge the refrigerant leaked from the air conditioner to reduce the risk of explosion or ignition when the air conditioner leaks refrigerant.

[0055] The present invention is aimed at the arrangement of air conditioners in the North American market, for example, where the outdoor fan is installed on the outdoor side, and the indoor fan is installed in a separate indoor unit installation room in the house. The indoor fan supplies air to each user room through a first air duct. On this basis, the indoor fan of the present application is additionally provided with a second air duct, so that the second air duct is connected to the outdoor side, so that the indoor unit installation room can be ventilated to the user room and can also be drawn to the outdoor side. Among them, a first air damper is provided on the first air duct, and a second air damper is provided on the second air duct. When the refrigerant concentration in the user room and / or the indoor unit installation room reaches the refrigerant leakage alarm value, the refrigerant leakage concentration in the user room or the indoor unit installation room is reduced by reasonably controlling the opening or closing of the first air damper and the second air damper, and controlling the operating state of the outdoor fan, thereby reducing the safety risk of the user room or the indoor unit installation room.

[0056] See also Figure 1 The first aspect of the present invention provides a refrigerant leakage control method. The air conditioner includes an outdoor fan and an indoor fan connected to the outdoor fan, the outdoor fan is installed on the outdoor side, and the indoor fan is installed in the indoor unit installation room; the indoor fan is provided with a first air duct connected to the user room, and a second air duct with a first end connected to the outdoor side, the second end of the second air duct is located in the indoor unit installation room, and is selectively connected to the first air duct; the first air duct is provided with a first air damper, and the second air duct is provided with a second air damper. The refrigerant leakage control method of the air conditioner includes:

[0057] Step S10: Obtain the refrigerant concentration of the room where the indoor unit is installed and the refrigerant concentration of the user's room;

[0058] Step S20: at least one of the refrigerant concentration in the user's room and the refrigerant concentration in the room where the indoor unit is installed is greater than or equal to the refrigerant leakage alarm value;

[0059] Step S30: at least control the second damper to open.

[0060] According to the refrigerant leakage control method of the air conditioner provided by the present invention, at least one of the refrigerant concentration in the user's room and the refrigerant concentration in the indoor unit installation room is greater than or equal to the refrigerant leakage alarm value, that is, the refrigerant concentration in the user's room is greater than or equal to the refrigerant leakage alarm value, or the refrigerant concentration in the indoor unit installation room is greater than the preset value, or the refrigerant concentration in the user's room and the indoor unit installation room are both greater than the refrigerant leakage alarm value. Among them, when only the refrigerant concentration in the indoor unit installation room is greater than or equal to the refrigerant leakage alarm value, it means that the safety risk of refrigerant leakage in the user's room is low, but the refrigerant leakage concentration in the indoor unit installation room has reached the point where protective measures need to be taken, and the second air damper on the second air duct can be opened, and the first air damper on the first air duct can be closed to control the indoor fan to exhaust to the outdoor side, and stop ventilation to the user's room, so that the refrigerant leaked in the indoor unit installation room is quickly discharged to the outdoor side, and the refrigerant can be prevented from being transmitted to the user's room. In addition, the refrigerant concentration in the indoor unit installation room can be reduced to reduce the risk of explosion or ignition due to the large local concentration of refrigerant in the indoor unit installation room. When the refrigerant concentration in the user's room is greater than or equal to the refrigerant leakage alarm value, the second damper and the first damper are controlled to open, so that the refrigerant in the user's room can be drained to the outside through the first duct and the second duct. When the refrigerant concentration in the user's room and the room where the indoor unit is installed are both greater than the refrigerant leakage alarm value, the second damper and the first damper can be opened first to drain the refrigerant in the user's room to the outside first. When the refrigerant concentration in the user's room decreases to less than the refrigerant leakage alarm value, the second duct is disconnected from the first duct, the first damper is closed at the same time, and the second damper is opened to discharge the refrigerant in the room where the indoor unit is installed to the outside, and prevent the refrigerant in the room where the indoor unit is installed from entering the user's room. Since the outdoor fan is running continuously, the refrigerant discharged to the outside can be quickly dispersed to reduce the risk of dangerous refrigerant accumulation on the outside.

[0061] See also Figure 2 According to some embodiments of the present application, at least one of the refrigerant concentration in the user's room and the refrigerant concentration in the room where the indoor unit is installed is greater than or equal to the refrigerant leakage alarm value, including:

[0062] Step S201: according to the refrigerant concentration in the user's room being less than the refrigerant leakage alarm value, and the refrigerant concentration in the room where the indoor unit is installed being greater than or equal to the refrigerant leakage alarm value, the alarm is turned on;

[0063] Step S202: If the alarm duration is longer than the preset duration, the second damper is opened to keep the outdoor fan running continuously, and the first damper is closed.

[0064] In this embodiment, when the first damper is opened, ventilation between the indoor unit installation room and the user room can be achieved; when the first damper is closed, the indoor unit installation room and the user room are no longer connected. Similarly, when the second damper is opened, ventilation between the indoor unit installation room and the outside can be achieved; when the second damper is closed, the indoor unit installation room and the outside are no longer connected.

[0065] Exemplarily, the alarm duration is not less than 5 minutes. For example, the preset duration can be set to 5 minutes, 6 minutes or 10 minutes.

[0066] The refrigerant concentration in the user's room has not reached the refrigerant leakage alarm value, indicating that the safety risk of refrigerant leakage in the user's room is low or there is no safety risk. However, the refrigerant concentration in the room where the indoor unit is installed has reached the refrigerant leakage alarm value, indicating that the refrigerant leakage concentration in the room where the indoor unit is installed has reached the level that requires protective measures, and the refrigerant leaked in the room where the indoor unit is installed may flow to the user's room through the first air duct. At this time, the alarm state is immediately turned on. When the alarm duration is greater than the preset duration, for example, when the alarm state lasts for 6 minutes, the second air damper on the second air duct is opened by control, and the first air damper on the first air duct is closed to control the indoor fan to exhaust to the outdoors and stop ventilating the user's room, so that the refrigerant leaked in the room where the indoor unit is installed is quickly discharged to the outdoors, and the refrigerant can be prevented from being transmitted to the user's room, thereby reducing the refrigerant concentration in the room where the indoor unit is installed, so as to reduce the risk of explosion or ignition due to the high local concentration of refrigerant in the room where the indoor unit is installed. At the same time, since the outdoor fan continues to operate, the refrigerant discharged to the outdoors can be quickly blown away, so as to reduce the risk of dangerous refrigerant accumulation on the outdoors.

[0067] See also Figure 3 According to some embodiments of the present application, the refrigerant leakage control method of the air conditioner further includes:

[0068] Step S203: When the refrigerant concentration in the room where the indoor unit is installed decreases to less than the refrigerant leakage alarm value, and the ratio of the refrigerant concentration in the room where the indoor unit is installed to the refrigerant leakage alarm value is less than 90%, the alarm is canceled, the first damper is opened, and the second damper is closed.

[0069] In this embodiment, after opening the second damper on the second air duct and closing the first damper on the first air duct for a certain period of time, it is determined whether the refrigerant concentration in the room where the indoor unit is installed is reduced to less than the refrigerant leakage alarm value, and whether the ratio of the refrigerant concentration in the room where the indoor unit is installed to the preset alarm value is less than 90%, so as to determine whether there is still a safety risk in the room where the indoor unit is installed. If so, it means that the risk of explosion or ignition caused by the refrigerant concentration in the room where the indoor unit is installed has been significantly reduced. At this time, the alarm is lifted, the first damper is opened, and the second damper is closed, so that the indoor fan continues to ventilate to the user's room through the first air duct and stops ventilating to the outdoors. If not, step S202 is continued to be executed to further divert the refrigerant in the room where the indoor unit is installed to the outdoors.

[0070] See also Figure 4 According to some embodiments of the present application, before executing the steps of releasing the alarm, opening the first damper, and closing the second damper, the refrigerant leakage control method of the air conditioner further includes:

[0071] When the ratio of the refrigerant concentration in the user's room to the refrigerant leakage alarm value is less than 90%, the alarm is released, the first damper is opened, and the second damper is closed.

[0072] In this embodiment, although the refrigerant concentration in the room where the indoor unit is installed is reduced after executing step S30, before executing step S202, the room where the indoor unit is installed and the user's room are in a ventilated state, and some refrigerant may flow to the user's room. Therefore, it is also necessary to determine whether the refrigerant concentration in the user's room is lower than the refrigerant leakage alarm value, and it is necessary to determine whether the ratio of the refrigerant concentration in the user's room to the refrigerant leakage alarm value is less than 90% to ensure the safety of the user's room. If so, the alarm is lifted, the second damper is closed, and the first damper is opened; if not, step S202 is continued.

[0073] See also Figure 5 According to some embodiments of the present application, based on at least one of the refrigerant concentration in the user's room and the refrigerant concentration in the room where the indoor unit is installed being greater than or equal to the refrigerant leakage alarm value, the refrigerant leakage control method for the air conditioner further includes:

[0074] Step S204: if the refrigerant concentration in the user's room is greater than the refrigerant leakage alarm value, an alarm is activated;

[0075] Step S205: If the alarm duration is longer than the preset duration, the second damper is opened to keep the outdoor fan running continuously and the first damper is kept in the open state.

[0076] In this embodiment, when the refrigerant concentration in the user's room is greater than the refrigerant leakage alarm value, it means that the concentration of the leaked refrigerant in the user's room has reached the point where protective measures need to be taken, and the safety risk in the user's room is high. At this time, the alarm is immediately turned on. When the alarm state reaches a preset duration, the second wind damper on the second air duct is opened, and the first wind damper on the first air duct is kept in an open state to control the indoor fan to ventilate to the outdoors, and keep the room where the indoor unit is installed and the user's room ventilated, so that the user's room is connected to the outdoors, and the refrigerant leaked in the user's room can be discharged to the outdoors, so as to reduce the risk of explosion or ignition due to the high local concentration of refrigerant in the user's room.

[0077] See also Figure 6 According to some embodiments of the present application, the refrigerant leakage control method of the air conditioner further includes:

[0078] Step S206: when the refrigerant concentration in the user's room decreases to less than the refrigerant leakage alarm value and the ratio of the refrigerant concentration in the user's room to the refrigerant leakage alarm value is less than 90%, the alarm is canceled and the second damper is closed.

[0079] In this embodiment, after the refrigerant in the user's room flows to the outside for a certain period of time, the refrigerant concentration in the user's room is reduced. At this time, it is determined whether the refrigerant concentration in the user's room is reduced to below the refrigerant leakage alarm value, and whether the ratio of the refrigerant concentration in the user's room to the refrigerant leakage alarm value is less than 90%, so as to determine whether there is still a safety risk in the user's room. If so, the alarm is lifted and the second damper is closed to stop the ventilation of the user's room and the room where the indoor unit is installed to the outside, so as to help adjust the temperature of the user's room. If not, continue to perform step S60 to further realize the refrigerant in the user's room to the outside.

[0080] See also Figure 7 According to some embodiments of the present application, before executing the step of releasing the alarm and closing the second damper, the refrigerant leakage control method of the air conditioner further includes:

[0081] If the refrigerant concentration in the room where the indoor unit is installed is less than the refrigerant leakage alarm value, and the ratio of the refrigerant concentration in the room where the indoor unit is installed to the refrigerant leakage alarm value is less than 90%, the alarm is released and the second damper is closed.

[0082] In this embodiment, when the refrigerant in the user's room flows to the outside for a certain period of time, the safety risk of the user's room is reduced, but it is still necessary to determine whether the refrigerant concentration in the room where the indoor unit is installed is lower than the refrigerant leakage alarm value to determine whether the refrigerant leaked from the user's room flows to the room where the indoor unit is installed. By determining whether the ratio of the refrigerant concentration in the room where the indoor unit is installed to the refrigerant leakage alarm value is less than 90%, if so, it means that the refrigerant concentration in the room where the indoor unit is installed has no safety risk or has a low safety risk, and then the alarm is lifted and the second damper is closed. If not, continue to execute step S205.

[0083] See also Figure 8 According to some embodiments of the present application, the refrigerant leakage control method of the air conditioner further includes:

[0084] Step S207: The refrigerant concentration in the user's room is less than the refrigerant leakage alarm value, and the refrigerant concentration in the room where the indoor unit is installed is less than the refrigerant leakage alarm value;

[0085] Step S208: Keep the second damper closed and keep the first damper open.

[0086] In this embodiment, it can be understood that when the refrigerant in the user room and the room where the indoor unit is installed is less than the refrigerant leakage alarm value, it means that there is no safety risk or the safety risk is low in the user room or the room where the indoor unit is installed. At this time, there is no need to take protective measures, just keep the second damper closed and keep the first damper open.

[0087] See also Fig. 9 According to some embodiments of the present application, the present application provides a refrigerant leakage control method for an air conditioner, the air conditioner being any of the above embodiments, and the refrigerant leakage control method for the air conditioner comprising:

[0088] The initial state of the air conditioner is: the room where the indoor unit is installed is connected to the user's room, that is, the first damper remains open.

[0089] The room where the indoor unit is installed is not connected to the outdoor side, that is, the second air damper remains closed.

[0090] For ease of explanation, threshold values ​​s1 and s2 are preset, as well as the refrigerant concentration a in the user's room, the refrigerant concentration b in the room where the indoor unit is installed, and the refrigerant leakage alarm value c. S1 represents the difference between the refrigerant leakage concentration in the room where the indoor unit is installed and the refrigerant leakage alarm value, and S2 represents the difference between the refrigerant leakage concentration in the user's room and the refrigerant leakage alarm value.

[0091] When a≥c, that is, s2≥0, the alarm is turned on;

[0092] In this step, when a≥c, that is, s2≥0, it means that the user room has a security risk. Regardless of whether the room where the indoor unit is installed has a risk, the user room is the most sensitive area in the actual application scenario. The user room must be excluded first, and then the risk of the room where the indoor unit is installed must be ensured.

[0093] When the alarm duration reaches the preset duration, the second damper is controlled to open, the outdoor fan is kept running, and the first damper is kept in the open state;

[0094] In this step, the user room, the indoor unit installation room and the outdoor room can be ventilated with each other.

[0095] When the refrigerant concentration a in the user's room decreases to less than the refrigerant leakage alarm value c (i.e. s2 < 0), and a / c < 90%, and the refrigerant concentration b in the room where the indoor unit is installed is less than the refrigerant leakage alarm value c (i.e. s1 < 0), and b / c < 90%, the alarm is released, the second damper is closed, and the first damper is kept open. Otherwise, the second damper is kept open, the outdoor fan on the outdoor side is kept running, and the first damper is kept open.

[0096] When a<c, and b≥c, that is, s2<0, and s1≥0, the alarm is turned on;

[0097] When the alarm duration reaches the preset duration, the second damper is opened to keep the outdoor fan on the outdoor side running continuously, and the first damper is closed;

[0098] When the refrigerant concentration b in the room where the indoor unit is installed decreases to less than the refrigerant leakage alarm value c (i.e. s1 < 0), and b / c < 90%, and the refrigerant concentration a in the user's room is less than the refrigerant leakage alarm value c (i.e. s1 < 0), and a / c < 90%, the alarm is released, the second damper is closed, and the first damper is opened. Otherwise, the second damper is kept open, the outdoor fan on the outdoor side is kept running, and the first damper is closed.

[0099] When the refrigerant concentration a in the user's room is less than the refrigerant leakage alarm value c, and the refrigerant concentration b in the room where the indoor unit is installed is less than the refrigerant leakage alarm value c, that is, s2<0, and s1<0, there is no safety risk in the user's room and the room where the indoor unit is installed, the first damper remains open, and the second damper remains closed.

[0100] See also Fig.10 According to some embodiments of the present application, a second aspect of the present invention provides a control device 200 for an air conditioner 100, comprising: a memory 220 and a processor 210, the memory 220 being used to store a computer program, the processor 210 executing the computer program to implement the steps of the refrigerant leakage control method for the air conditioner 100 as described in any one of the first aspect embodiments.

[0101] See also Fig.11 According to some embodiments of the present application, the third aspect of the present invention provides an air conditioner 100, including: an outdoor fan 120, an indoor fan 110, a first refrigerant sensor 130, a second refrigerant sensor 140, an alarm 150 and a control device 200 of the air conditioner 100 as in the second aspect of the embodiment. The outdoor fan 120 is arranged on the outdoor side, the indoor fan 110 is connected to the outdoor fan 120, the indoor fan 110 is arranged in the indoor unit installation room, and is provided with a first air duct 111 connected to the user's room, and the indoor fan 110 is provided with a second air duct 112 whose first end is connected to the outdoor side, the second end of the second air duct 112 is located in the indoor unit installation room, and can be selectively connected to the first air duct 111; the first air duct 111 is provided with a first damper, and the second air duct 112 is provided with a second damper; the first refrigerant sensor 130 is arranged in the user's room, for Obtain the refrigerant concentration in the user's room; the second refrigerant sensor 140 is arranged in the indoor unit installation room, and is used to obtain the refrigerant concentration in the indoor unit installation room; the alarm 150 is electrically connected to the first refrigerant sensor 130 and the second refrigerant sensor 140; the control device 200 is electrically connected to the first refrigerant sensor 130, the second refrigerant sensor 140, the alarm 150, the outdoor fan 120, the indoor fan 110, the first damper and the second damper, and is used to implement the refrigerant leakage control method of the air conditioner 100 as any one of the first aspect implementation methods when executing the computer program.

[0102] In this embodiment, the indoor fan 110 is connected to the user room through the first air duct 111 and is connected to the outdoor side through the second air duct 112 .

[0103] Exemplarily, the first air duct 111 is disposed around the circumference of the user's room.

[0104] By way of example, there may be one user room or multiple user rooms.

[0105] Exemplarily, the first refrigerant sensor and the second refrigerant sensor are gas concentration detection sensors.

[0106] Exemplarily, the first refrigerant sensor may be integrated into the indoor fan 110 , and the second refrigerant sensor may be disposed on the first air duct 111 .

[0107] The first damper on the first air duct 111 is initially in an open state, and the second damper on the second air duct 112 is initially in a closed state. When the first refrigerant sensor 130 detects that the refrigerant concentration in the user's room reaches the refrigerant leakage alarm value, the alarm 150 turns on the alarm state. When the alarm state reaches a preset duration, the second damper on the second air duct 112 is opened, and the outdoor fan 120 is kept running, and the first damper of the first air duct 111 is kept in an open state, so that the user's room is connected to the outdoor side, so that the refrigerant in the user's room can be discharged to the outdoor side, thereby reducing the risk of explosion or ignition of the refrigerant concentration in the user's room. When the second refrigerant sensor 140 detects that the refrigerant concentration in the room where the indoor unit is installed reaches the refrigerant leakage alarm value, and the first refrigerant sensor 130 detects that the refrigerant concentration in the user's room is less than the refrigerant leakage alarm value, the alarm 150 starts to alarm. When the alarm state reaches a preset duration, the second air damper is opened, the first air damper is closed, and the outdoor fan 120 is kept running, so that the refrigerant in the room where the indoor unit is installed can flow to the outdoors, and the refrigerant can be prevented from flowing to the user's room through the first air duct 111. Finally, the refrigerant flowing to the outdoor side is quickly blown away by the airflow generated by the outdoor fan 120, thereby reducing the risk of ignition of refrigerant accumulation on the outdoor side.

[0108] According to some embodiments of the present application, an outlet of the second air duct 112 faces the outdoor fan 120 .

[0109] In this embodiment, the air outlet of the second air duct 112 is set to face the outdoor fan 120 and extend close to the outdoor fan 120. In this way, when the second air damper is opened, the refrigerant in the room where the indoor unit is installed is directly blown to the outdoors through the second air duct 112. During the operation of the outdoor fan 120 arranged on the outdoor side, the refrigerant can be quickly dispersed to reduce and improve the safety of the refrigerant when it is discharged to the outdoors.

[0110] According to some embodiments of the present application, the fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a refrigerant leakage control method for the air conditioner 100 as described in any one of the embodiments of the first aspect.

[0111] In this embodiment, examples of computer-readable storage media (a non-exhaustive list) include the following: an electrical connection with one or more wirings (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory, or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM, Compact Disc Read-Only Memory). In addition, the computer-readable storage medium may even be paper or other suitable medium on which the program may be 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 other suitable ways as necessary, and then stored in a computer memory.

[0112] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, devices (systems) or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention 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.

[0113] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks 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 generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0114] These computer program instructions may also be stored in a computer-readable memory capable of directing 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 an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1A function specified in one or more boxes.

[0115] 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, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0116] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A refrigerant leakage control method for an air conditioner, characterized in that: The air conditioner comprises an outdoor fan and an indoor fan connected to the outdoor fan, wherein the outdoor fan is installed at the outdoor side, and the indoor fan is installed at the indoor unit installation room; the indoor fan is provided with a first air duct connected to the user room, and is provided with a second air duct having a first end connected to the outdoor side; the second end of the second air duct is located in the indoor unit installation room, and is selectively connected to the first air duct; the first air duct is provided with a first air damper, and the second air duct is provided with a second air damper; the refrigerant leakage control method of the air conditioner comprises: Obtaining the refrigerant concentration of the room where the indoor unit is installed and the refrigerant concentration of the user's room; At least one of the refrigerant concentration in the user's room and the refrigerant concentration in the room where the indoor unit is installed is greater than or equal to a refrigerant leakage alarm value; At least control the second damper to open.

2. The refrigerant leakage control method of the air conditioner according to claim 1, characterized in that: The step of determining that at least one of the refrigerant concentration in the user's room and the refrigerant concentration in the indoor unit installation room is greater than or equal to a refrigerant leakage alarm value comprises: According to the refrigerant concentration in the user's room being less than the refrigerant leakage alarm value, and the refrigerant concentration in the room where the indoor unit is installed being greater than or equal to the refrigerant leakage alarm value, an alarm is activated; If the alarm duration is longer than the preset duration, the second damper is opened to keep the outdoor fan running continuously, and the first damper is closed.

3. The refrigerant leakage control method of the air conditioner according to claim 2, characterized in that: The refrigerant leakage control method of the air conditioner also includes: When the refrigerant concentration in the room where the indoor unit is installed decreases to less than the refrigerant leakage alarm value and the ratio of the refrigerant concentration in the room where the indoor unit is installed to the refrigerant leakage alarm value is less than 90%, the alarm is canceled, the first damper is opened, and the second damper is closed.

4. The refrigerant leakage control method of the air conditioner according to claim 3, characterized in that: Before executing the steps of releasing the alarm, opening the first damper, and closing the second damper, the refrigerant leakage control method of the air conditioner further includes: If the ratio of the refrigerant concentration in the user's room to the refrigerant leakage alarm value is less than 90%, the alarm is canceled, the first damper is opened, and the second damper is closed.

5. The refrigerant leakage control method of the air conditioner according to claim 1, characterized in that: The step of determining that at least one of the refrigerant concentration in the user's room and the refrigerant concentration in the indoor unit installation room is greater than or equal to a refrigerant leakage alarm value further includes: If the refrigerant concentration in the user's room is greater than the refrigerant leakage alarm value, an alarm is activated; If the alarm duration is longer than the preset duration, the second damper is opened to keep the outdoor fan running continuously and the first damper is kept in the open state.

6. The refrigerant leakage control method of the air conditioner according to claim 5, characterized in that: The refrigerant leakage control method of the air conditioner also includes: When the refrigerant concentration in the user room decreases to less than the refrigerant leakage alarm value and the ratio of the refrigerant concentration in the user room to the refrigerant leakage alarm value is less than 90%, the alarm is released and the second damper is closed.

7. The refrigerant leakage control method of the air conditioner according to claim 6, characterized in that: Before executing the step of releasing the alarm and closing the second damper, the refrigerant leakage control method of the air conditioner further includes: According to the refrigerant concentration in the room where the indoor unit is installed being less than the refrigerant leakage alarm value, and the ratio of the refrigerant concentration in the room where the indoor unit is installed to the refrigerant leakage alarm value being less than 90%, the alarm is canceled and the second damper is closed.

8. The refrigerant leakage control method of an air conditioner according to claim 1, characterized in that: The refrigerant leakage control method of the air conditioner also includes: According to the refrigerant concentration in the user's room being less than the refrigerant leakage alarm value, and the refrigerant concentration in the room where the indoor unit is installed being less than the refrigerant leakage alarm value, the second damper is kept closed, and the first damper is kept open.

9. A control device for an air conditioner, characterized in that: include: 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 8 can be implemented.

10. An air conditioner, characterized in that: include: An outdoor fan and an indoor fan, wherein the outdoor fan is arranged at the outdoor side, the indoor fan is connected to the outdoor fan, the indoor fan is arranged in the indoor unit installation room, the indoor fan is provided with a first air duct connected to the user room, and is provided with a second air duct having a first end connected to the outdoor side; the second end of the second air duct is located in the indoor unit installation room and is selectively connected to the first air duct; the first air duct is provided with a first air damper, and the second air duct is provided with a second air damper; A first refrigerant sensor is provided in the user room and is used to obtain the refrigerant concentration in the user room; A second refrigerant sensor is provided in the room where the indoor unit is installed, and is used to obtain the refrigerant concentration in the room where the indoor unit is installed; an alarm, electrically connected to the first refrigerant sensor and the second refrigerant sensor; and The control device of the air conditioner as described in claim 9, wherein the control device is electrically connected to the first refrigerant sensor, the second refrigerant sensor, the alarm, the outdoor fan, the indoor fan, the first damper and the second damper, and is used to implement the refrigerant leakage control method of the air conditioner as described in any one of claims 1 to 8 when executing a computer program.

11. The air conditioner according to claim 10, characterized in that: The outlet of the second air duct faces the outdoor fan.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, 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 8 is implemented.

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