Control method of air conditioner indoor unit, air conditioner indoor unit and air conditioner

Abstract

The invention provides a control method of an air conditioner indoor unit, the air conditioner indoor unit and an air conditioner. The control method comprises the steps that in the state that a fresh air module is started, a first detection device is controlled to detect a first index parameter; judging whether the first index parameter reaches the standard or not; if not, the fresh air module is controlled to be kept open, and the step of controlling the first detection device to detect the first index parameter is executed again; if yes, controlling a second detection device to detect a second index parameter; judging whether the second index parameter reaches the standard or not; if not, the fresh air module is controlled to be kept open, and the step of controlling the first detection device to detect the first index parameter is executed again; if yes, controlling a third detection device to detect a third index parameter; judging whether the third index parameter reaches the standard or not; if not, the fresh air module is controlled to be kept open, and the step of controlling the first detection device to detect the first index parameter is executed again; if yes; if yes, the air conditioner indoor unit is controlled to close the fresh air mode. The fresh air can be prevented from affecting the temperature, and electricity is saved.

Description

Technical Field

[0001] The present invention relates to the field of air conditioners, and particularly to a control method for an indoor unit of an air conditioner, the indoor unit of the air conditioner, and the air conditioner. Background Art

[0002] With the development of technology and the continuous improvement of people's living standards, air conditioners have entered thousands of households, providing a comfortable environment for people. Users generally use air conditioners in a closed indoor environment, and fresh air from the outside cannot be replenished into the room in time. If fresh air from the outside cannot be replenished into the room in time for a long time, the user's comfort level will decline.

[0003] Therefore, current indoor units of air conditioners are generally equipped with a fresh air module to replenish fresh outside air into the room in time to improve the user's comfort level. However, there are also certain drawbacks when introducing outside air into the room for a long time. For example, it affects the indoor temperature and increases power consumption. How to improve the user's comfort level while avoiding affecting the indoor temperature and increasing power consumption and other technical problems have become technical problems to be solved urgently. Summary of the Invention

[0004] An object of the present invention is to provide a control method for an indoor unit of an air conditioner, the indoor unit of the air conditioner, and the air conditioner to solve the above technical problems.

[0005] In particular, the present invention provides a control method for an indoor unit of an air conditioner, which includes:

[0006] When the fresh air module of the indoor unit of the air conditioner is turned on, controlling a first detection device of the indoor unit of the air conditioner to detect a first index parameter in the working environment of the indoor unit of the air conditioner;

[0007] Judging whether the first index parameter meets the standard;

[0008] If not, controlling the fresh air module of the indoor unit of the air conditioner to remain turned on, and returning to the step of controlling the first detection device of the indoor unit of the air conditioner to detect the first index parameter in the working environment of the indoor unit of the air conditioner;

[0009] If so, controlling a second detection device of the indoor unit of the air conditioner to detect a second index parameter in the working environment of the indoor unit of the air conditioner;

[0010] Judging whether the second index parameter meets the standard;

[0011] If not, controlling the fresh air module of the indoor unit of the air conditioner to remain turned on, and returning to the step of controlling the first detection device of the indoor unit of the air conditioner to detect the first index parameter in the working environment of the indoor unit of the air conditioner;

[0012] If so, control the third detection device of the indoor unit of the air conditioner to detect the third index parameter in the working environment of the indoor unit of the air conditioner;

[0013] Judge whether the third index parameter meets the standard;

[0014] If not, control the fresh air module of the indoor unit of the air conditioner to remain open, and return to the step of controlling the first detection device of the indoor unit of the air conditioner to detect the first index parameter in the working environment of the indoor unit of the air conditioner;

[0015] If so, control the indoor unit of the air conditioner to turn off the fresh air mode.

[0016] Optionally, the first detection device includes a carbon dioxide concentration sensor;

[0017] Controlling the first detection device of the indoor unit of the air conditioner to detect the first index parameter in the working environment of the indoor unit of the air conditioner includes controlling the carbon dioxide concentration sensor of the indoor unit of the air conditioner to detect the concentration of carbon dioxide in the working environment;

[0018] Judging whether the first index parameter meets the standard includes judging whether the concentration of carbon dioxide in the working environment is less than the first threshold.

[0019] Optionally, the first threshold is 500 ppm.

[0020] Optionally, the second detection device includes a PM2.5 concentration sensor;

[0021] Controlling the second detection device of the indoor unit of the air conditioner to detect the second index parameter in the working environment of the indoor unit of the air conditioner includes controlling the PM2.5 concentration sensor of the indoor unit of the air conditioner to detect the concentration of PM2.5 in the working environment;

[0022] Judging whether the second index parameter meets the standard includes judging whether the concentration of PM2.5 in the working environment is less than the second threshold.

[0023] Optionally, the second threshold is 2.5.

[0024] Optionally, the third detection device includes an oxygen content sensor;

[0025] Controlling the third detection device of the indoor unit of the air conditioner to detect the third index parameter in the working environment of the indoor unit of the air conditioner includes controlling the oxygen content sensor of the indoor unit of the air conditioner to detect the oxygen content in the working environment of the indoor unit of the air conditioner;

[0026] Judging whether the third index parameter meets the standard includes judging whether the oxygen content in the working environment is within a preset range.

[0027] Optionally, the preset range is 20% to 23%.

[0028] According to a second aspect of the present invention, the present invention further provides an indoor unit of an air conditioner, which includes:

[0029] A first detection device;

[0030] A second detection device;

[0031] A third detection device; and

[0032] A controller, the controller includes a memory and a processor, wherein the memory stores a machine-executable program, and when the machine-executable program is executed by the processor, it realizes the control method of the indoor unit of the air conditioner as described in any one of the above.

[0033] Optionally, the first detection device includes a carbon dioxide concentration sensor; the second detection device includes a PM2.5 concentration sensor; the third detection device includes an oxygen content sensor.

[0034] According to a third aspect of the present invention, the present invention further provides an air conditioner, which includes the indoor unit of the air conditioner as described in any one of the above.

[0035] The present invention provides a control method of an indoor unit of an air conditioner, the indoor unit of the air conditioner and the air conditioner, which includes that when the fresh air module of the indoor unit of the air conditioner is turned on, controlling the first detection device of the indoor unit of the air conditioner to detect the first index parameter in the working environment of the indoor unit of the air conditioner; judging whether the first index parameter meets the standard; if not, controlling the fresh air module of the indoor unit of the air conditioner to remain turned on, and returning to the step of controlling the first detection device of the indoor unit of the air conditioner to detect the first index parameter in the working environment of the indoor unit of the air conditioner; if so, controlling the second detection device of the indoor unit of the air conditioner to detect the second index parameter in the working environment of the indoor unit of the air conditioner; judging whether the second index parameter meets the standard; if not, controlling the fresh air module of the indoor unit of the air conditioner to remain turned on, and returning to the step of controlling the first detection device of the indoor unit of the air conditioner to detect the first index parameter in the working environment of the indoor unit of the air conditioner; if so, controlling the third detection device of the indoor unit of the air conditioner to detect the third index parameter in the working environment of the indoor unit of the air conditioner; judging whether the third index parameter meets the standard; if not, controlling the fresh air module of the indoor unit of the air conditioner to remain turned on, and returning to the step of controlling the first detection device of the indoor unit of the air conditioner to detect the first index parameter in the working environment of the indoor unit of the air conditioner; if so; controlling the indoor unit of the air conditioner to turn off the fresh air mode. When the first index parameter, the second index parameter and the third index parameter all meet the standards, directly turn off the fresh air module to avoid the fresh air affecting the temperature of the working environment, save electricity, and ensure user comfort.

[0036] According to the following detailed description of the specific embodiments of the present invention in conjunction with the drawings, those skilled in the art will more clearly understand the above and other objects, advantages and features of the present invention. Description of the Drawings

[0037] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an illustrative rather than restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0038] Figure 1 is a flowchart of a control method for an indoor unit of an air conditioner according to an embodiment of the present invention;

[0039] Figure 2 is a flowchart of a control method for an indoor unit of an air conditioner according to another embodiment of the present invention;

[0040] Figure 3 is a flowchart of a control method for an indoor unit of an air conditioner according to still another embodiment of the present invention;

[0041] Figure 4 is a block diagram of an indoor unit of an air conditioner according to an embodiment of the present invention. Detailed Embodiments

[0042] Figure 1 is a flowchart of a control method for an indoor unit of an air conditioner according to an embodiment of the present invention; Figure 2 is a flowchart of a control method for an indoor unit of an air conditioner according to another embodiment of the present invention; Figure 3 is a flowchart of a control method for an indoor unit of an air conditioner according to still another embodiment of the present invention; Figure 4 is a block diagram of an indoor unit of an air conditioner according to an embodiment of the present invention.

[0043] As Figure 1 shown, this embodiment provides a control method for an indoor unit 10 of an air conditioner, which includes:

[0044] Step S202: When the fresh air module of the indoor unit 10 of the air conditioner is turned on, control the first detection device 130 of the indoor unit 10 of the air conditioner to detect the first index parameter in the working environment of the indoor unit 10 of the air conditioner;

[0045] In this embodiment, the type of the indoor unit 10 of the air conditioner is not limited and can be selected according to needs. For example, the indoor unit 10 of the air conditioner can be a wall-mounted indoor unit of an air conditioner, a floor-standing indoor unit of an air conditioner, or a window-type indoor unit of an air conditioner.

[0046] In this embodiment, the type of the first detection device 130 is not limited and can be selected according to needs. For example, the first detection device 130 can be a carbon dioxide concentration sensor, a PM2.5 concentration sensor, an oxygen content concentration sensor, a formaldehyde concentration sensor, and so on. As a specific embodiment, as Figure 2As shown, the first detection device 130 is a carbon dioxide concentration sensor. Obviously, this is only exemplary and not the only one.

[0047] In this embodiment, the type of the first indicator parameter is not limited, which is related to the type of the first detection device 130. If the type of the first detection device 130 is a carbon dioxide concentration sensor, the first indicator parameter is the concentration of carbon dioxide. If the type of the first detection device 130 is a PM2.5 concentration sensor, the first indicator parameter is the concentration of PM2.5. If the type of the first detection device 130 is a formaldehyde concentration sensor, the first indicator parameter is the concentration of formaldehyde.

[0048] As a specific embodiment, the first detection device 130 includes a carbon dioxide concentration sensor. Controlling the first detection device 130 of the air conditioner indoor unit 10 to detect the first indicator parameter in the working environment of the air conditioner indoor unit 10 includes controlling the carbon dioxide concentration sensor of the air conditioner indoor unit 10 to detect the concentration of carbon dioxide in the working environment.

[0049] Step S204: Determine whether the first indicator parameter meets the standard;

[0050] In this embodiment, the specific method for determining whether the first indicator parameter meets the standard is not limited and can be selected as needed. For example, it can be determined whether the first indicator parameter is within a preset range. For example, it can be determined whether the first indicator parameter is greater than or less than a specific value. As a specific embodiment, when the first indicator parameter is the concentration of carbon dioxide, the specific method for determining whether the first indicator meets the standard is to determine whether the concentration of carbon dioxide in the working environment is less than the first threshold.

[0051] In this embodiment, the magnitude of the first threshold is not limited and can be selected as needed. For example, the first threshold can be any value between 450 ppm and 550 ppm. As a specific embodiment, the first threshold is 500 ppm.

[0052] Step S206: If not, control the fresh air module of the air conditioner indoor unit 10 to remain open, and return to the step of controlling the first detection device 130 of the air conditioner indoor unit 10 to detect the first indicator parameter in the working environment of the air conditioner indoor unit 10;

[0053] If the first indicator parameter in the working environment of the air conditioner indoor unit 10 does not meet the standard, it proves that the working environment of the air conditioner indoor unit 10 does not reach the customer comfort state, that is, it does not meet the standard. At this time, in order to improve the comfort of the working environment, the fresh air module needs to remain open to improve the comfort of the working environment. At the same time, continue to detect the first indicator parameter in the working environment to remind the user when the first indicator parameter meets the standard or directly turn off the fresh air module to avoid the fresh air affecting the temperature of the working environment and save electricity.

[0054] Step S208: If so, control the second detection device 140 of the air conditioner indoor unit 10 to detect the second index parameter in the working environment of the air conditioner indoor unit 10;

[0055] In this embodiment, the type of the second detection device 140 is not limited and can be selected according to needs. For example, the second detection device 140 can be a carbon dioxide concentration sensor, a PM2.5 concentration sensor, an oxygen content concentration sensor, a formaldehyde concentration sensor, etc. As a specific embodiment, as Figure 2 shown, the second detection device 140 is a PM2.5 concentration sensor. Obviously, this is only exemplary and not the only one.

[0056] In this embodiment, the type of the second index parameter is not limited, which is related to the type of the second detection device 140. If the type of the second detection device 140 is a carbon dioxide concentration sensor, the second index parameter is the concentration of carbon dioxide. If the type of the second detection device 140 is a PM2.5 concentration sensor, the second index parameter is the concentration of PM2.5. If the type of the second detection device 140 is a formaldehyde concentration sensor, the second index parameter is the concentration of formaldehyde.

[0057] As a specific embodiment, the second detection device 140 includes a PM2.5 concentration sensor. Controlling the second detection device 140 of the air conditioner indoor unit 10 to detect the second index parameter in the working environment of the air conditioner indoor unit 10 includes controlling the PM2.5 concentration sensor of the air conditioner indoor unit 10 to detect the concentration of PM2.5 in the working environment.

[0058] Step S210: Determine whether the second index parameter meets the standard;

[0059] In this embodiment, the specific method for determining whether the second index parameter meets the standard is not limited and can be selected according to needs. For example, it can be determined whether the second index parameter is within a preset range. For example, it can be determined whether the second index parameter is greater than or less than a specific value. As a specific embodiment, when the second index parameter is the concentration of PM2.5, the specific method for determining whether the second index parameter meets the standard is to determine whether the concentration of PM2.5 in the working environment is less than the second threshold.

[0060] In this embodiment, the magnitude of the second threshold is not limited and can be selected according to needs. For example, the second threshold can be any value between 2 and 3. As a specific embodiment, the second threshold is 2.5.

[0061] Step S212: If not, control the fresh air module of the indoor unit 10 of the air conditioner to remain on, and return to the step of controlling the first detection device 130 of the indoor unit 10 of the air conditioner to detect the first index parameter in the working environment of the indoor unit 10 of the air conditioner;

[0062] If the second index parameter in the working environment of the indoor unit 10 of the air conditioner fails to meet the standard, it proves that the working environment of the indoor unit 10 of the air conditioner does not reach the customer comfort state, that is, it does not reach the standard. At this time, in order to improve the comfort of the working environment, the fresh air module needs to remain on to improve the comfort of the working environment. At the same time, continue to detect the first index parameter and the second index parameter in the working environment, so as to remind the user when the first index parameter and the second index parameter both meet the standard or directly turn off the fresh air module to avoid the fresh air affecting the temperature of the working environment and save electricity.

[0063] Step S214: If so, control the third detection device 150 of the indoor unit 10 of the air conditioner to detect the third index parameter in the working environment of the indoor unit 10 of the air conditioner;

[0064] In this embodiment, the type of the third detection device 150 is not limited and can be selected according to needs. For example, the third detection device 150 can be a carbon dioxide concentration sensor, a PM2.5 concentration sensor, an oxygen content concentration sensor, a formaldehyde concentration sensor, etc. As a specific embodiment, as Figure 2 shown, the third detection device 150 is an oxygen content concentration sensor. Obviously, this is only exemplary and not the only one.

[0065] The type of the third index parameter is not limited in this embodiment, which is related to the type of the third detection device 150. If the type of the third detection device 150 is a carbon dioxide concentration sensor, the third index parameter is the concentration of carbon dioxide. If the type of the third detection device 150 is a PM2.5 concentration sensor, the third index parameter is the concentration of PM2.5. If the type of the third detection device 150 is a formaldehyde concentration sensor, the third index parameter is the concentration of formaldehyde.

[0066] As a specific embodiment, the third detection device 150 includes an oxygen content concentration sensor. Then controlling the third detection device 150 of the indoor unit 10 of the air conditioner to detect the third index parameter in the working environment of the indoor unit 10 of the air conditioner includes controlling the oxygen content sensor of the indoor unit 10 of the air conditioner to detect the oxygen content in the working environment of the indoor unit 10 of the air conditioner.

[0067] Step S216: Determine whether the third index parameter meets the standard;

[0068] In this embodiment, the specific method for determining whether the third index parameter meets the standard is not limited and can be selected according to needs. For example, it can be determined whether the third index parameter is within a preset range. For example, it can be determined whether the third index parameter is greater than or less than a specific value. As a specific embodiment, when the third index parameter is the oxygen content, the specific method for determining whether the third index parameter meets the standard is to determine whether the oxygen content in the working environment is within a preset range.

[0069] In this embodiment, the size of the preset range is not limited and can be selected according to needs. For example, the preset range is 20% to 23%.

[0070] Step S218: If not, then control the fresh air module of the indoor unit 10 of the air conditioner to remain on, and return to the step of controlling the first detection device 130 of the indoor unit 10 of the air conditioner to detect the first index parameter in the working environment of the indoor unit 10 of the air conditioner;

[0071] If the third index parameter in the working environment of the indoor unit 10 of the air conditioner does not meet the standard, it proves that the working environment of the indoor unit 10 of the air conditioner does not reach the customer comfort state, that is, it does not reach the standard. At this time, in order to improve the comfort of the working environment, the fresh air module needs to remain on to improve the comfort of the working environment. At the same time, continue to detect the first index parameter, the second index parameter and the third index parameter in the working environment, so as to remind the user when the first index parameter, the second index parameter and the third index parameter all meet the standard or directly turn off the fresh air module to avoid the fresh air affecting the temperature of the working environment, so as to save electricity.

[0072] Step S220: If so; then control the indoor unit 10 of the air conditioner to turn off the fresh air mode.

[0073] When the first index parameter, the second index parameter and the third index parameter all meet the standard, directly turn off the fresh air module to avoid the fresh air affecting the temperature of the working environment, so as to save electricity and ensure the comfort of the user.

[0074] As Figure 2 shown, this embodiment provides another control method for the indoor unit 10 of the air conditioner, which includes:

[0075] Step S302: In the state where the fresh air module of the indoor unit 10 of the air conditioner is turned on, control the carbon dioxide concentration sensor of the indoor unit 10 of the air conditioner to detect the concentration of carbon dioxide in the working environment;

[0076] Step S304: Determine whether the concentration of carbon dioxide in the working environment is less than the first threshold;

[0077] Step S306: If not, control the fresh air module of the indoor unit 10 of the air conditioner to remain open, and return to the step of controlling the first detection device 130 of the indoor unit 10 of the air conditioner to detect the first index parameter in the working environment of the indoor unit 10 of the air conditioner;

[0078] Step S308: If so, control the PM2.5 concentration sensor of the indoor unit 10 of the air conditioner to detect the concentration of PM2.5 in the working environment;

[0079] Step S310: Determine whether the concentration of PM2.5 in the working environment is less than the second threshold;

[0080] Step S312: If not, control the fresh air module of the indoor unit 10 of the air conditioner to remain open, and return to the step of controlling the first detection device 130 of the indoor unit 10 of the air conditioner to detect the first index parameter in the working environment of the indoor unit 10 of the air conditioner;

[0081] Step S314: If so, control the oxygen content sensor of the indoor unit 10 of the air conditioner to detect the oxygen content in the working environment of the indoor unit 10 of the air conditioner;

[0082] Step S316: Determine whether the oxygen content in the working environment is within a preset range;

[0083] Step S318: If not, control the fresh air module of the indoor unit 10 of the air conditioner to remain open, and return to the step of controlling the first detection device 130 of the indoor unit 10 of the air conditioner to detect the first index parameter in the working environment of the indoor unit 10 of the air conditioner;

[0084] Step S320: If so, control the indoor unit 10 of the air conditioner to turn off the fresh air mode.

[0085] As Figure 3 shown, this embodiment provides another control method for the indoor unit 10 of the air conditioner, which includes:

[0086] Step S402: When the fresh air module of the indoor unit 10 of the air conditioner is turned on, control the carbon dioxide concentration sensor of the indoor unit 10 of the air conditioner to detect the concentration of carbon dioxide in the working environment;

[0087] Step S404: Determine whether the concentration of carbon dioxide in the working environment is less than 500 ppm;

[0088] Step S406: If not, control the fresh air module of the indoor unit 10 of the air conditioner to remain open, and return to the step of controlling the first detection device 130 of the indoor unit 10 of the air conditioner to detect the first index parameter in the working environment of the indoor unit 10 of the air conditioner;

[0089] Step S408: If so, control the PM2.5 concentration sensor of the indoor unit 10 of the air conditioner to detect the concentration of PM2.5 in the working environment;

[0090] Step S410: Determine whether the concentration of PM2.5 in the working environment is less than 2.5;

[0091] Step S412: If not, control the fresh air module of the indoor unit 10 of the air conditioner to remain open, and return to the step of controlling the first detection device 130 of the indoor unit 10 of the air conditioner to detect the first index parameter in the working environment of the indoor unit 10 of the air conditioner;

[0092] Step S414: If so, control the oxygen content sensor of the indoor unit 10 of the air conditioner to detect the oxygen content in the working environment of the indoor unit 10 of the air conditioner;

[0093] Step S416: Determine whether the oxygen content in the working environment is between 20% and 23%;

[0094] Step S418: If not, control the fresh air module of the indoor unit 10 of the air conditioner to remain open, and return to the step of controlling the first detection device 130 of the indoor unit 10 of the air conditioner to detect the first index parameter in the working environment of the indoor unit 10 of the air conditioner;

[0095] Step S420: If so; then control the indoor unit 10 of the air conditioner to turn off the fresh air mode.

[0096] According to the second aspect of the present invention, the present invention also provides an indoor unit 10 of an air conditioner, which includes a first detection device 130; a second detection device 140; a third detection device 150; and a controller 100. The controller 100 includes a memory 120 and a processor 110. The memory 120 stores a machine-executable program 121. When the machine-executable program 121 is executed by the processor 110, it realizes the control method of the indoor unit 10 of the air conditioner in any one of the above. Since the indoor unit 10 of the air conditioner can implement the control method of the indoor unit 10 of the air conditioner as described above, therefore, the indoor unit 10 of the air conditioner has the technical effects of the control method of the indoor unit 10 of the air conditioner in any one of the above, which will not be elaborated here one by one.

[0097] In some other embodiments, the first detection device 130 includes a carbon dioxide concentration sensor; the second detection device 140 includes a PM2.5 concentration sensor; the third detection device 150 includes an oxygen content sensor.

[0098] According to the third aspect of the present invention, the present invention also provides an air conditioner, which includes the indoor unit 10 of the air conditioner in any one of the above. Since the air conditioner includes the indoor unit 10 of the air conditioner in any one of the above, therefore, the air conditioner has the technical effects of the indoor unit 10 of the air conditioner in any one of the above, which will not be elaborated here one by one.

[0099] In the description of this embodiment, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0100] The terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features, that is, include one or more of such features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined. When a certain feature "includes or contains" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0101] Unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0102] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. That is, in the description of this embodiment, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", or "underneath" the second feature may be the first feature being directly below or obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0103] Unless otherwise defined, all terms (including technical and scientific terms) used in the description of this embodiment have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs.

[0104] In the description of this embodiment, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0105] Up to this point, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, still, many other variations or modifications that conform to the principles of the present invention can be directly determined or derived from the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized to cover all these other variations or modifications.

Claims

1. A control method for an indoor unit of an air conditioner, comprising: When the fresh air module of the indoor unit of the air conditioner is turned on, controlling a first detection device of the indoor unit of the air conditioner to detect a first index parameter in the working environment of the indoor unit of the air conditioner; Judging whether the first index parameter meets the standard; If not, controlling the fresh air module of the indoor unit of the air conditioner to remain turned on, and returning to the step of controlling the first detection device of the indoor unit of the air conditioner to detect the first index parameter in the working environment of the indoor unit of the air conditioner; If so, controlling a second detection device of the indoor unit of the air conditioner to detect a second index parameter in the working environment of the indoor unit of the air conditioner; Judging whether the second index parameter meets the standard; If not, controlling the fresh air module of the indoor unit of the air conditioner to remain turned on, and returning to the step of controlling the first detection device of the indoor unit of the air conditioner to detect the first index parameter in the working environment of the indoor unit of the air conditioner; If so, controlling a third detection device of the indoor unit of the air conditioner to detect a third index parameter in the working environment of the indoor unit of the air conditioner; Judging whether the third index parameter meets the standard; If not, controlling the fresh air module of the indoor unit of the air conditioner to remain turned on, and returning to the step of controlling the first detection device of the indoor unit of the air conditioner to detect the first index parameter in the working environment of the indoor unit of the air conditioner; If so, controlling the indoor unit of the air conditioner to turn off the fresh air mode.

2. The control method of the indoor unit of an air conditioner according to claim 1, wherein, The first detection device includes a carbon dioxide concentration sensor; Controlling the first detection device of the indoor unit of the air conditioner to detect the first index parameter in the working environment of the indoor unit of the air conditioner includes controlling the carbon dioxide concentration sensor of the indoor unit of the air conditioner to detect the concentration of carbon dioxide in the working environment; Judging whether the first index parameter meets the standard includes judging whether the concentration of carbon dioxide in the working environment is less than a first threshold value.

3. According to the control method for the indoor unit of the air conditioner according to claim 2, wherein, The first threshold value is 500 ppm.

4. The control method of the indoor unit of the air conditioner according to claim 1, wherein, The second detection device includes a PM2.5 concentration sensor; Controlling the second detection device of the indoor unit of the air conditioner to detect the second index parameter in the working environment of the indoor unit of the air conditioner includes controlling the PM2.5 concentration sensor of the indoor unit of the air conditioner to detect the concentration of PM2.5 in the working environment; Judging whether the second index parameter meets the standard includes judging whether the concentration of PM2.5 in the working environment is less than a second threshold value.

5. According to the control method for the indoor unit of the air conditioner according to claim 4, wherein, The second threshold value is 2.

5.

6. The control method of the indoor unit of the air conditioner according to claim 1, wherein, The third detection device includes an oxygen content sensor; Controlling the third detection device of the indoor unit of the air conditioner to detect the third index parameter in the working environment of the indoor unit of the air conditioner includes controlling the oxygen content sensor of the indoor unit of the air conditioner to detect the oxygen content in the working environment of the indoor unit of the air conditioner; Judging whether the third index parameter meets the standard includes judging whether the oxygen content in the working environment is within a preset range.

7. The control method of the indoor unit of an air conditioner according to claim 6, wherein the preset range is 20% to 23%.

8. An indoor unit of an air conditioner, comprising: a first detection device; a second detection device; a third detection device; and a controller, the controller includes a memory and a processor, wherein the memory stores a machine-executable program, and when the machine-executable program is executed by the processor, it implements the control method of the indoor unit of an air conditioner according to any one of claims 1 to 7.

9. The indoor unit of an air conditioner according to claim 8, wherein the first detection device includes a carbon dioxide concentration sensor; the second detection device includes a PM2.5 concentration sensor; the third detection device includes an oxygen content sensor.

10. An air conditioner, comprising the indoor unit of an air conditioner according to any one of claims 8 to 9.

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