Air conditioner and control method thereof

Abstract

The invention relates to the technical field of air conditioning, in particular to an air conditioner and a control method thereof. The control method comprises the steps that in response to a triggering condition meeting a glass cleaning mode, the dew point temperature of condensation generated on the outer surface of glass of a target window is calculated; the air conditioner is controlled to start a glass cleaning mode, air is discharged according to the first temperature, and the first temperature is smaller than the dew point temperature. The basic air supply function of the air conditioner is used for automatically cleaning the outer surface of the glass, the function that the air conditioner automatically cleans the outer surface of the glass is achieved, and the beneficial effects that cleaning is timely, the cleaning coverage range is large, and manual intervention is completely not needed can be achieved; the problems that in the prior art, manual glass cleaning is time-consuming and labor-consuming, cleaning is not thorough, and potential safety hazards are large are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioner and a control method thereof. Background Art

[0002] At present, windows are the "eyes" connecting indoor and outdoor, and indoor lighting is provided through windows. The outer side of the window glass is exposed to the outdoors for a long time, and dust adheres to the surface, which hinders light transmission and visual aesthetics, affecting user experience. At present, window glass cleaning is usually done manually, which is not only time-consuming and laborious, but also has problems such as cleaning dead corners and the inability to ensure timely cleaning. In addition, if the user is a high-rise user, manually wiping the glass will pose a great safety hazard. Summary of the invention

[0003] In view of the above problems, the present invention is proposed to provide an air conditioner and a control method thereof that overcome the above problems or at least partially solve the above problems, so that the air conditioner has the function of automatically cleaning the outer surface of the glass to replace manual cleaning of the glass.

[0004] In one aspect, the present invention provides a method for controlling an air conditioner, comprising:

[0005] In response to satisfying a trigger condition of the clean glass mode, calculating a dew point temperature at which condensation occurs on an outer surface of the glass of the target window;

[0006] The air conditioner is controlled to start the clean glass mode and blow air at a first temperature, where the first temperature is lower than the dew point temperature.

[0007] Optionally, the control method further includes:

[0008] In response to the clean glass mode being activated, the air conditioner is controlled to discharge air toward the glass of the target window.

[0009] Optionally, the control method further comprises: acquiring an image of the target window glass using an image sensor to determine a cleanliness parameter of the outer surface of the glass;

[0010] The cleanliness parameters include: dust location, dust range and / or dust concentration;

[0011] The triggering conditions of the cleaning glass mode include:

[0012] The dust range is greater than a preset range value; and / or

[0013] The dust concentration is greater than a preset concentration value;

[0014] The control method further comprises:

[0015] In response to the clean glass mode being activated, the air conditioner is controlled to blow air toward the dust location.

[0016] Optionally, the control method further comprises: obtaining outdoor environmental humidity;

[0017] The triggering condition of the cleaning glass mode includes: the outdoor environment humidity is greater than a preset humidity value.

[0018] The control method further comprises:

[0019] The operating time of the clean glass mode is positively correlated with the dust range; and / or

[0020] The operating time of the clean glass mode is positively correlated with the dust concentration.

[0021] Optionally, the control method further includes:

[0022] In response to the time for which the air conditioner discharges air at the first temperature being greater than or equal to a preset time, calculating a condensation rate;

[0023] Determining whether the condensation rate is greater than or equal to a preset rate value;

[0024] If yes, controlling the air conditioner to continue to blow air at the first temperature;

[0025] If not, the air conditioner is controlled to end the clean glass mode.

[0026] Optionally, in response to the time for which the air conditioner discharges air at the first temperature being greater than or equal to a preset time, calculating a condensation rate;

[0027] Determining whether the condensation rate is greater than or equal to a preset rate value;

[0028] If yes, controlling the air conditioner to continue to blow air at the first temperature;

[0029] If not, the air conditioner is controlled to discharge air at a second temperature, which is lower than the first temperature.

[0030] Optionally, the calculation of the condensation rate includes:

[0031] Get the current outdoor ambient humidity and the humidity of the glass outer surface;

[0032] Calculating the condensation rate according to the outdoor environment temperature and humidity and the humidity of the glass outer surface;

[0033] The calculation formula of the condensation rate is:

[0034]

[0035] In the formula, C 1 Indicates outdoor ambient humidity, Cs Indicates the humidity of the glass outer surface, h D represents the mass transfer coefficient.

[0036] Optionally, the control method further includes:

[0037] The mass transfer coefficient h is calculated based on the Rayleigh number Re D ;

[0038] The calculation formula of the Rayleigh number is:

[0039] Re=ρvL / μ

[0040] When the Rayleigh number is less than the first preset value, the calculation formula of the mass transfer coefficient is:

[0041]

[0042] When the Rayleigh number is greater than or equal to the first preset value and less than the second preset value, the calculation formula of the mass transfer coefficient is:

[0043]

[0044] When the Rayleigh number is greater than or equal to the second preset value, the calculation formula of the mass transfer coefficient is:

[0045]

[0046] In the formula,

[0047] Where ρ is the fluid density, in kg / m 3 ; μ is the viscosity coefficient; v is the characteristic velocity of the flow field; L is the characteristic length of the flow field; D is the diffusion coefficient between air and water vapor; Δy is the thickness of the near-wall unit; μ t is the eddy viscosity, in Pa.S; S ct is the turbulent Schmidt number; h is the heat transfer coefficient; the unit is W / (m 2 .K); Le is the Lewis number; C p is the specific heat, the unit is J / (Kg.K); λ is the thermal conductivity, the unit is W / (mK); D is the diffusion coefficient, the unit is m 2 / s.

[0048] The present invention also provides an air conditioner, comprising a control device, wherein the control device comprises a memory and a processor, wherein a control program is stored in the memory, and when the control program is executed by the processor, it is used to implement any of the above-mentioned air conditioner control methods.

[0049] In the control method of the air conditioner of the present invention, when the triggering condition of the glass cleaning mode is met, the air outlet temperature of the air conditioner is adjusted to a first temperature lower than the dew point temperature, so that a certain temperature difference can be generated between the inside and outside of the glass. Under the effect of the temperature difference, condensation will be generated on the outer surface of the glass and a water flow will be formed to wash away the dust on the outer surface of the glass, thereby achieving the purpose of automatically cleaning the outer surface of the glass. In other words, the present invention uses the basic air supply function of the air conditioner to automatically clean the outer surface of the glass, realizes the function of the air conditioner to automatically clean the outer surface of the glass, and can produce the beneficial effects of timely cleaning, wide cleaning coverage, and no need for manual intervention, solving the problems of manual glass cleaning in the prior art, such as laborious and laborious, incomplete cleaning, and great safety hazards.

[0050] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0052] Figure 1 is a schematic flow chart of a method for controlling an air conditioner according to an embodiment of the present invention;

[0053] Figure 2 is a schematic flow chart of a method for controlling an air conditioner according to another embodiment of the present invention;

[0054] Figure 3 is a schematic flow chart of a method for controlling an air conditioner according to another embodiment of the present invention. DETAILED DESCRIPTION

[0055] Refer to the following Figures 1 to 3 The control method of the air conditioner and the air conditioner according to the embodiment of the present invention are described.

[0056] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does 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.

[0057] Figure 1 is a schematic flow chart of a method for controlling an air conditioner according to an embodiment of the present invention, and Figure 2-3 The present invention provides a control method for an air conditioner having a clean glass mode.

[0058] The control method of the air conditioner comprises the following steps:

[0059] Step S11, in response to satisfying the triggering condition of the clean glass mode, calculating the dew point temperature at which condensation occurs on the outer surface of the glass of the target window.

[0060] Step S12, controlling the air conditioner to start the clean glass mode and blow air at a first temperature, wherein the first temperature is lower than the dew point temperature.

[0061] Specifically, when the triggering condition of the clean glass mode is met, the dew point temperature at which condensation occurs on the outer surface of the glass of the target window is calculated; then the clean glass mode is started, and the air outlet temperature of the air conditioner is adjusted to a first temperature lower than the dew point temperature. The dew point temperature refers to the upper limit value T0 of the indoor temperature at which condensation occurs on the outer surface of the glass; that is, when the indoor temperature is T0, condensation can occur on the outer surface of the glass, which is the critical value. When the air outlet temperature of the air conditioner is adjusted to the first temperature lower than the dew point temperature, a certain amount of condensation can be generated on the outer surface of the glass and a water flow can be formed.

[0062] In this embodiment, when the triggering condition of the glass cleaning mode is met, the air outlet temperature of the air conditioner is adjusted to a first temperature lower than the dew point temperature, so that a certain temperature difference can be generated inside and outside the glass. Under the effect of the temperature difference, condensation will be generated on the outer surface of the glass and a water flow will be formed to wash away the dust on the outer surface of the glass, thereby achieving the purpose of automatically cleaning the outer surface of the glass. In other words, the present invention uses the basic air supply function of the air conditioner to automatically clean the outer surface of the glass, realizes the function of the air conditioner to automatically clean the outer surface of the glass, and can produce the beneficial effects of timely cleaning, wide cleaning coverage, and no need for manual intervention, solving the problems of manual glass cleaning in the prior art, such as laborious and laborious, incomplete cleaning, and great safety hazards.

[0063] In some optional embodiments of the present invention, the control method further comprises: in response to the activation of the clean glass mode, controlling the air conditioner to discharge air toward the glass of the target window.

[0064] Specifically, Figure 2 As shown, the control method of the air conditioner comprises the following steps:

[0065] Step S21, in response to satisfying the triggering condition of the clean glass mode, calculating the dew point temperature at which condensation occurs on the outer surface of the glass of the target window.

[0066] Step S22, controlling the air conditioner to start the clean glass mode, discharging air at a first temperature and discharging air toward the glass of the target window, wherein the first temperature is less than the dew point temperature. In some alternative embodiments, in response to the start of the clean glass mode, the air conditioner can also be controlled to discharge air toward the vicinity of the target window or other locations.

[0067] In this embodiment, after the cleaning glass mode is started, the air conditioner blows air toward the glass of the target window. Compared with the air conditioner blowing air toward other locations, the condensation efficiency of condensation on the outer surface of the glass can be improved, thereby improving the cleaning efficiency of the glass and saving electricity.

[0068] In some optional embodiments of the present invention, the control method further includes: acquiring an image of the target window glass using an image sensor to determine cleanliness parameters of the outer surface of the glass.

[0069] Specifically, the cleanliness parameters of the outer surface of the glass are determined according to the imaging and comparison functions of the image sensor.

[0070] In some optional embodiments of the present invention, the control method further includes: in response to the activation of the clean glass mode, controlling the air conditioner to blow air toward the dust location.

[0071] In this embodiment, compared with the method of blowing air toward the entire glass, in this embodiment, blowing air at a local position (dust position) of the glass can quickly form a large amount of condensation at that position, thereby further improving the cleaning efficiency of the dust position.

[0072] In some embodiments of the present invention, the cleanliness parameters include: dust location, dust range and dust concentration.

[0073] In this embodiment, the triggering condition of the clean glass mode includes: the dust range is greater than a preset range value; and the dust concentration is greater than a preset concentration value. In some alternative embodiments, the triggering condition of the clean glass mode includes: the dust range is greater than a preset range value; or the dust concentration is greater than a preset concentration value.

[0074] More preferably, the running time of the clean glass mode is positively correlated with the dust range; the running time of the clean glass mode is positively correlated with the dust concentration. That is, the running time of the clean glass mode is determined by two factors: the dust range and the dust concentration. The larger the dust range and the higher the dust concentration, the longer the running time of the clean glass mode.

[0075] In some other optional embodiments of the present invention, the cleanliness parameter includes: dust position and dust range. The triggering condition of the clean glass mode includes: the dust range is greater than a preset range value. Further, the running time of the clean glass mode is positively correlated with the dust range. The larger the dust range, the longer the running time of the clean glass mode.

[0076] In some other optional embodiments of the present invention, the cleanliness parameter includes: dust position and dust concentration. The triggering condition of the clean glass mode includes: the dust concentration is greater than a preset concentration value. The running time of the clean glass mode is positively correlated with the dust concentration. The higher the dust concentration, the longer the running time of the clean glass mode.

[0077] In some optional embodiments of the present invention, the control method further comprises: obtaining outdoor environmental humidity. The triggering condition of the cleaning glass mode comprises: the outdoor environmental humidity is greater than a preset humidity value.

[0078] Preferably, the preset humidity value is 50% to 90%.

[0079] More preferably, the preset humidity value is 70% to 80%. (For example: 70%, 73%, 75%, 78% or 80%)

[0080] In this embodiment, when the outdoor humidity is relatively high, the dew point temperature of condensation on the outer surface of the glass of the target window is relatively high, so that the first temperature can be relatively high; that is, a large amount of condensation can be formed when the temperature difference between the inside and outside of the glass is relatively small. Therefore, through the above settings, not only energy is saved, but also the condensation efficiency of condensation can be improved, thereby improving the cleaning efficiency and cleaning effect of the glass.

[0081] In some optional embodiments of the present invention, the triggering condition of the cleaning glass mode includes a first condition and a second condition.

[0082] The first condition is: the dust range is greater than a preset range value and the dust concentration is greater than a preset concentration value; or, the dust range is greater than a preset range value or the dust concentration is greater than a preset concentration value.

[0083] The second condition is that the outdoor environment humidity is greater than a preset humidity value.

[0084] In this embodiment, the triggering condition of the clean glass mode is satisfied only when the first condition and the second condition are satisfied at the same time; that is, the air conditioner is controlled to start the clean glass mode only when the first condition and the second condition are satisfied at the same time. Compared with the case where only the first condition or the second condition is used as the triggering condition, the cleaning efficiency of the glass can be improved and energy can be saved.

[0085] In other optional embodiments of the present invention, the triggering condition of the glass cleaning mode is receiving a control instruction input by the user to start glass cleaning.

[0086] In some optional embodiments of the present invention, the calculation of the dew point temperature at which condensation occurs on the outer surface of the glass of the target window includes: calculating the dew point temperature according to the acquired outdoor ambient humidity and outdoor ambient temperature.

[0087] The calculation formula of the dew point temperature is:

[0088]

[0089] In the formula,

[0090] Where T is the outdoor ambient temperature in °C; T d is the dew point temperature, T d The unit is ℃;

[0091] RH is the outdoor humidity; Ln represents the natural logarithm; constants a and b are: a=17.27℃, b=237.7℃ respectively.

[0092] In this embodiment, when calculating the dew point temperature, the outdoor environment humidity and the outdoor environment temperature are first obtained, and then the dew point temperature is calculated according to the above calculation formula. Specifically, a first hygrometer and a first temperature sensor are installed outdoors, and the first hygrometer is used to obtain the outdoor environment humidity; the first temperature sensor is used to obtain the outdoor environment temperature. Alternatively, a first temperature and humidity sensor is installed outdoors to obtain the outdoor environment humidity and the outdoor environment temperature.

[0093] The dew point temperatures under different outdoor ambient temperatures and different outdoor ambient humidity are calculated according to the above formula, as shown in Table 1: Under the same outdoor ambient temperature, the greater the outdoor ambient humidity, the smaller the temperature difference between the outdoor ambient temperature and the dew point temperature.

[0094] Table 1

[0095]

[0096] In some optional embodiments of the present invention, the first temperature is the product of the dew point temperature and a preset coefficient, and the preset coefficient is less than 1.

[0097] Preferably, the preset coefficient is 60-95% (for example, 60%, 70%, 80%, 85% or 90%).

[0098] Further preferably, the preset coefficient is 90%.

[0099] In some optional embodiments of the present invention, the control method also includes: in response to the time when the air conditioner blows air at the first temperature being greater than or equal to a preset time, calculating the condensation rate; determining whether the condensation rate is greater than or equal to a preset rate value; if so, controlling the air conditioner to continue to blow air at the first temperature; if not, controlling the air conditioner to blow air at a second temperature, which is lower than the first temperature.

[0100] Specifically, Figure 3 As shown, the control method of the air conditioner comprises the following steps:

[0101] Step S31, in response to satisfying the triggering condition of the clean glass mode, calculating the dew point temperature at which condensation occurs on the outer surface of the glass of the target window.

[0102] Step S32, controlling the air conditioner to start the clean glass mode and blow air at a first temperature, wherein the first temperature is lower than the dew point temperature.

[0103] Step S33, when the time for the air conditioner to blow air at the first temperature is greater than or equal to a preset time, the condensation rate is calculated.

[0104] Step S34, determining whether the condensation rate is greater than or equal to a preset rate value.

[0105] Step S35: if yes, the air conditioner is controlled to continue to blow air at the first temperature; if no, the air conditioner is controlled to blow air at a second temperature, which is lower than the first temperature.

[0106] Further, in step S32, the air conditioner is controlled to start the clean glass mode, and the air is discharged at a first temperature and toward the glass of the target window, and the first temperature is lower than the dew point temperature.

[0107] In this embodiment, if the time for air outlet at the first temperature reaches the preset time and the condensation rate is less than the preset rate value, then the air outlet temperature of the air conditioner is lowered, which can further increase the temperature difference between the inside and outside of the glass, thereby further increasing the condensation rate, and further improving the cleaning efficiency of the outer surface of the glass.

[0108] In some other optional embodiments of the present invention, the control method also includes: in response to the time when the air conditioner blows air at the first temperature being greater than or equal to a preset time, calculating the condensation rate; determining whether the condensation rate is greater than or equal to a preset rate value; if so, controlling the air conditioner to continue to blow air at the first temperature; if not, controlling the air conditioner to end the cleaning glass mode.

[0109] In some optional embodiments of the present invention, the calculation of the condensation rate includes the following steps: obtaining the current outdoor environment humidity and the humidity of the outer surface of the glass; and calculating the condensation rate according to the outdoor environment temperature and humidity and the humidity of the outer surface of the glass.

[0110] The calculation formula of the condensation rate is:

[0111]

[0112] In the formula, C 1 Indicates the outdoor ambient humidity (mass fraction of steam in the outside air), C s Indicates the humidity of the glass surface (mass fraction of steam saturated on the wall), h D represents the mass transfer coefficient.

[0113] Furthermore, in some optional embodiments of the present invention, the control method further comprises: calculating the mass transfer coefficient h according to the Rayleigh number Re D .

[0114] The calculation formula of the Rayleigh number is:

[0115] Re=ρvL / μ

[0116] Where ρ is the fluid density, μ is the viscosity coefficient, v is the characteristic velocity of the flow field, and L is the characteristic length of the flow field.

[0117] The mass transfer coefficient h is calculated based on the Rayleigh number Re D , specifically including:

[0118] When the Rayleigh number is less than the first preset value, the calculation formula of the mass transfer coefficient is:

[0119]

[0120] Where ρ is the fluid density, in kg / m 3 ; D is the diffusion coefficient between air and water vapor; Δy is the thickness of the near-wall unit.

[0121] When the Rayleigh number is greater than or equal to the first preset value and less than the second preset value, the calculation formula of the mass transfer coefficient is:

[0122]

[0123] Where ρ is the fluid density, in kg / m 3 ; D is the diffusion coefficient between air and water vapor; Δy is the thickness of the near-wall unit; μ t is the eddy viscosity, with the unit being Pa.S; S ctis the turbulent Schmidt number.

[0124] When the Rayleigh number is greater than or equal to the second preset value, the calculation formula of the mass transfer coefficient is:

[0125]

[0126] In the formula,

[0127] Where ρ is the fluid density, in kg / m 3 ; h is the heat transfer coefficient, unit is W / (m 2 .K); Le is the Lewis number; C p is the specific heat (SpecificHeat), the unit is J / (Kg.K); λ is the thermal conductivity (thermal conductivity), the unit is W / (mK); D is the diffusion coefficient (Diffusivity), the unit is m 2 / s.

[0128] Specifically, the first preset value is less than the second preset value. The second preset value may be 1000. When the Rayleigh number is less than the first preset value, the fluid flow is stable, the fluid is laminar and the grid is fine enough. When the Rayleigh number is greater than or equal to the first preset value, the fluid flow is relatively unstable and is turbulent.

[0129] In some optional embodiments of the present invention, the control method further includes: when the air conditioner meets the end condition of the clean glass mode, ending the clean glass mode and adjusting the working mode of the air conditioner to the original working mode before the clean glass mode is running.

[0130] The end conditions of the clean glass mode include: the running time of the clean glass mode reaches the set time; or the outdoor environment humidity is lower than the set humidity value. Further, the set humidity value is less than 50%; further, the set humidity value is less than 30%.

[0131] The present invention provides an air conditioner, comprising a control device, the control device comprising a memory and a processor, the memory storing a control program, and the control program, when executed by the processor, is used to implement the control method of the air conditioner described in any of the above embodiments.

[0132] In some optional embodiments of the present invention, the air conditioner includes an outdoor unit, a first hygrometer and a first temperature sensor are installed on the housing of the outdoor unit, the first hygrometer is used to obtain the outdoor environmental humidity; the first temperature sensor is used to obtain the outdoor environmental temperature. The first hygrometer and the first temperature sensor are communicatively connected to the control device.

[0133] In some optional embodiments of the present invention, the air conditioner includes an outdoor unit, and a first temperature and humidity sensor is installed on the housing of the outdoor unit to obtain the outdoor environment humidity and outdoor environment temperature. The first temperature and humidity sensor is communicatively connected to the control device.

[0134] In some optional embodiments of the present invention, a second temperature and humidity sensor is installed on the outer surface of the glass to obtain the humidity and temperature of the outer surface of the glass. The second temperature and humidity sensor is communicatively connected to the control device.

[0135] In some optional embodiments of the present invention, a second hygrometer and a second temperature sensor are installed on the outer surface of the glass, the second hygrometer is used to obtain the humidity of the outer surface of the glass; the second temperature sensor is used to obtain the temperature of the outer surface of the glass. The second hygrometer and the second temperature sensor are communicatively connected to the control device.

[0136] In some optional embodiments of the present invention, the air conditioner includes an indoor unit, and a third temperature sensor is installed at the air outlet of the indoor unit or on the inner surface of the glass; the third temperature sensor is used to obtain the temperature of the inner surface of the glass or the indoor environment temperature. The third temperature sensor is communicatively connected to the control device.

[0137] In some optional embodiments of the present invention, an image sensor is installed outdoors, and the image sensor is communicatively connected to the control device.

[0138] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on 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 as covering all these other variations or modifications.

Claims

1. A method for controlling an air conditioner, characterized in that: include: In response to satisfying a trigger condition of the clean glass mode, calculating a dew point temperature at which condensation occurs on an outer surface of the glass of the target window; The air conditioner is controlled to start the clean glass mode and blow air at a first temperature, where the first temperature is lower than the dew point temperature.

2. The control method according to claim 1, characterized in that: The control method further comprises: In response to the clean glass mode being activated, the air conditioner is controlled to discharge air toward the glass of the target window.

3. The control method according to claim 1, characterized in that: The control method further comprises: acquiring an image of the target window glass using an image sensor to determine a cleanliness parameter of the outer surface of the glass; The cleanliness parameters include: dust location, dust range and / or dust concentration; The triggering conditions of the cleaning glass mode include: The dust range is greater than a preset range value; and / or The dust concentration is greater than a preset concentration value; The control method further comprises: In response to the clean glass mode being activated, the air conditioner is controlled to blow air toward the dust location.

4. The control method according to claim 1, characterized in that: The control method further includes: obtaining outdoor environmental humidity; The triggering condition of the cleaning glass mode includes: the outdoor environment humidity is greater than a preset humidity value.

5. The control method according to claim 3, characterized in that: The control method further comprises: The operating time of the clean glass mode is positively correlated with the dust range; and / or The operating time of the clean glass mode is positively correlated with the dust concentration.

6. The control method according to claim 1, characterized in that: The control method further comprises: In response to the time for which the air conditioner discharges air at the first temperature being greater than or equal to a preset time, calculating a condensation rate; Determining whether the condensation rate is greater than or equal to a preset rate value; If yes, controlling the air conditioner to continue to blow air at the first temperature; If not, the air conditioner is controlled to end the clean glass mode.

7. The control method according to claim 1, characterized in that: The control method further comprises: In response to the time for which the air conditioner discharges air at the first temperature being greater than or equal to a preset time, calculating a condensation rate; Determining whether the condensation rate is greater than or equal to a preset rate value; If yes, controlling the air conditioner to continue to blow air at the first temperature; If not, the air conditioner is controlled to discharge air at a second temperature, which is lower than the first temperature.

8. The control method according to claim 6 or 7, characterized in that: The calculation of condensation rate includes: Get the current outdoor ambient humidity and the humidity of the glass outer surface; Calculating the condensation rate according to the outdoor environment temperature and humidity and the humidity of the glass outer surface; The calculation formula of the condensation rate is: In the formula, C1 represents the outdoor humidity, C s Indicates the humidity of the glass outer surface, h D represents the mass transfer coefficient.

9. The control method according to claim 8, characterized in that: The control method further comprises: The mass transfer coefficient h is calculated based on the Rayleigh number Re D ; The calculation formula of the Rayleigh number is: Re=ρvL / μ When the Rayleigh number is less than the first preset value, the calculation formula of the mass transfer coefficient is: When the Rayleigh number is greater than or equal to the first preset value and less than the second preset value, the calculation formula of the mass transfer coefficient is: When the Rayleigh number is greater than or equal to the second preset value, the calculation formula of the mass transfer coefficient is: In the formula, Where ρ is the fluid density, in kg / m 3 ; μ is the viscosity coefficient; v is the characteristic velocity of the flow field; L is the characteristic length of the flow field; D is the diffusion coefficient between air and water vapor; Δy is the thickness of the near-wall unit; μ t is the eddy viscosity, in Pa.S; S ct is the turbulent Schmidt number; h is the heat transfer coefficient; the unit is W / (m 2 .K); Le is the Lewis number; C p is the specific heat, the unit is J / (Kg.K); λ is the thermal conductivity, the unit is W / (mK); D is the diffusion coefficient, the unit is m 2 / s.

10. An air conditioner, characterized in that: The invention comprises a control device, wherein the control device comprises a memory and a processor, wherein a control program is stored in the memory, and when the control program is executed by the processor, it is used to implement the control method of the air conditioner according to any one of claims 1 to 9.

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