Air conditioner and dust removal control method thereof

Abstract

The application provides an air conditioner and a dust removal control method thereof. The air conditioner comprises a controller configured to: control a static filter device to be turned on; determine an operation mode of the air conditioner; obtain an indoor pollutant particle concentration; when the air conditioner is in a refrigeration operation mode, control an indoor fan to operate at a first preset rotating speed or a second preset rotating speed according to the indoor pollutant particle concentration and a preset concentration threshold, so that the indoor pollutant particles flow through the static filter device; when the air conditioner is in a heating operation mode, control a compressor operating frequency to increase or decrease and / or control a throttle valve to increase or decrease according to different preset opening degrees according to the indoor pollutant particle concentration and the preset concentration threshold. The application guarantees that indoor pollutant particles of different diameters are fully charged, prolongs the residence time of the indoor pollutant particles in the static filter device, improves the filtering effect of indoor pollutant particles of different concentrations and different diameters, and reduces the harm to the human body.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, and in particular to an air conditioner and a dust removal control method thereof. BACKGROUND

[0002] Air quality problems have increasingly become an important problem that plagues the living environment in China. Winter haze weather has caused great trouble to people's production and life. User demand for dust removal and sterilization functions of air conditioners is gradually intense. Electrostatic filtration devices are also increasingly common.

[0003] Currently, an IFD (Intense Field Dielectric, strong electric field using dielectric material as a carrier) electrostatic dust collection module is generally used to filter indoor pollutant particles in the electrostatic filtration device. The IFD electrostatic dust collection module is small in size, low in noise, non-consumable, and good in dust removal effect.

[0004] However, when the IFD electrostatic dust collection module is used for dust removal, because the air quality is generally poor when the air conditioner is working, the electrostatic filtration device is good in filtering effect for indoor pollutant particles with a larger diameter, and usually can achieve more than 99%. However, the filtering effect is poor for some small indoor pollutant particles with a diameter of 0.1-1.0 μm, resulting in some small indoor pollutant particles escaping from the electrostatic filtration device. However, the total amount of small indoor pollutant particles is low, and the 99% filtering efficiency of the dust removal device often covers up the problem that the purification effect of small indoor pollutant particles is poor. Air purification is not complete, resulting in that small indoor pollutant particles pose a threat to the human body, for example, PM1.0 can enter the alveoli of the human body, and is extremely harmful to the human body. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art.

[0006] To this end, one object of the present application is to propose an air conditioner that ensures that indoor pollutant particles of different diameters can be fully charged, and prolongs the residence time of indoor pollutant particles in the electrostatic filtration device, improves the filtering effect of indoor pollutant particles of different concentrations and different diameters, and thus reduces the harm of small indoor pollutant particles to the human body.

[0007] To this end, a second object of the present application is to propose a dust removal control method of an air conditioner.

[0008] To achieve the above object, the embodiment of the first aspect of the present application proposes an air conditioner, comprising: a refrigerant circulation loop, which circulates refrigerant in a circulation loop through a compressor, a condenser, a throttle valve and an evaporator; the compressor is used to compress low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharge it to the condenser; an indoor fan is used to drive indoor air to exchange heat with an indoor heat exchanger and then send it out from an air outlet; an electrostatic filter device is arranged at an air inlet of the air conditioner and is used to filter indoor pollutant particles; a dust collection device is arranged in the electrostatic filter device and is used to adsorb the indoor pollutant particles; a particulate matter sensor is used to detect the concentration of indoor pollutant particles; and a controller is configured to: control the electrostatic filter device to be turned on; determine the operating mode of the air conditioner; obtain the concentration of indoor pollutant particles; when the air conditioner is in a cooling operating mode, control the indoor fan to operate at a first preset speed or a second preset speed according to the concentration of indoor pollutant particles and a preset concentration threshold, so that the indoor pollutant particles flow through the electrostatic filter device, wherein the first preset speed is greater than the second preset speed; when the air conditioner is in a heating operating mode, control the operating frequency of the compressor to increase or decrease according to the concentration of indoor pollutant particles and the preset concentration threshold, so as to adjust the corona current of the dust collection device, and / or control the throttle valve to increase or decrease according to different preset opening degrees, so as to adjust the corona current of the dust collection device.

[0009] According to the air conditioner of the embodiment of the present application, after the electrostatic filter device is turned on, the operating mode and the concentration of indoor pollutant particles are obtained, and the operating state of the indoor fan, the compressor and / or the throttle valve of the air conditioner is controlled. When the air conditioner is in a cooling operating mode, the operating speed of the indoor fan is adjusted; when the air conditioner is in a heating operating mode, the operating frequency of the compressor and / or the opening degree of the throttle valve are adjusted to adjust the corona current of the dust collection device. By cooperatively controlling the operating speed of the indoor fan, the operating frequency of the compressor and / or the opening degree of the throttle valve, it is ensured that indoor pollutant particles of different diameters can be fully charged, and the residence time of indoor pollutant particles in the electrostatic filter device is prolonged, the filtration effect of indoor pollutant particles of different concentrations and different diameters is improved, and the harm of fine indoor pollutant particles to human body is reduced.

[0010] In some embodiments, the preset concentration threshold comprises a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold, and according to the indoor pollutant particle concentration and the preset concentration threshold, the controller is configured to: when the indoor pollutant particle concentration exceeds the first preset concentration threshold or is between the first preset concentration threshold and the second preset concentration threshold, control the indoor fan to switch from an initial rotating speed to the first preset rotating speed; when the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, control the indoor fan to operate at the second preset rotating speed; and when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, control the electrostatic filter device to be closed, wherein the first preset concentration threshold is greater than the second preset concentration threshold, the second preset concentration threshold is greater than the third preset concentration threshold, and the initial rotating speed is less than the second preset rotating speed.

[0011] In some embodiments, the preset concentration threshold comprises a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold, and according to the indoor pollutant particle concentration and the preset concentration threshold, the controller is configured to: when the indoor pollutant particle concentration exceeds the first preset concentration threshold or is between the first preset concentration threshold and the second preset concentration threshold, control the compressor operating frequency to increase from an initial operating frequency to a first preset operating frequency; when the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, control the compressor operating frequency to decrease from the first preset operating frequency to a second preset operating frequency, wherein the first preset operating frequency is greater than the second preset operating frequency; and when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, control the compressor operating frequency to decrease and control the electrostatic filter device to be closed, wherein the first preset concentration threshold is greater than the second preset concentration threshold, the second preset concentration threshold is greater than the third preset concentration threshold, and the initial operating frequency is less than the second operating frequency.

[0012] In some embodiments, the preset concentration threshold comprises a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold, and the controller is configured to, when the indoor pollutant particle concentration exceeds the first preset concentration threshold or is between the first preset concentration threshold and the second preset concentration threshold, control the throttle valve to be raised from an initial opening degree by a first preset opening degree threshold until the opening degree of the throttle valve reaches a first opening degree; when the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, control the throttle valve to be raised from the initial opening degree by a second preset opening degree threshold until the opening degree of the throttle valve reaches the first opening degree; and when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, control the throttle valve to be adjusted to the initial opening degree and control the electrostatic filtration device to be closed, wherein the first opening degree is greater than the initial opening degree, the first preset opening degree threshold is greater than the second preset opening degree threshold, the first preset concentration threshold is greater than the second preset concentration threshold, and the second preset concentration threshold is greater than the third preset concentration threshold.

[0013] In some embodiments, after the electrostatic filtration device is controlled to be closed, the controller is further configured to control the indoor fan to switch to the initial rotating speed.

[0014] In some embodiments, after the electrostatic filtration device is controlled to be closed, the controller is further configured to control the operating frequency of the compressor to switch to the initial operating frequency.

[0015] In some embodiments, after the electrostatic filtration device is controlled to be closed, the controller is further configured to again acquire the indoor pollutant particle concentration, and control the electrostatic filtration device to be opened again when the indoor pollutant particle concentration exceeds the second preset concentration threshold.

[0016] In some embodiments, when the indoor pollutant particle concentration is acquired, the controller is further configured to acquire the indoor pollutant particle concentration every preset time.

[0017] To achieve the above object, embodiments of the second aspect of the present application provide a dust removal control method of an air conditioner, comprising: controlling a static filter device to be turned on; determining an operation mode of the air conditioner; obtaining an indoor pollutant particle concentration; when the air conditioner is in a cooling operation mode, controlling an indoor fan to operate at a first preset rotating speed or a second preset rotating speed according to the indoor pollutant particle concentration and a preset concentration threshold, so that the indoor pollutant particles flow through the static filter device, wherein the first preset rotating speed is greater than the second preset rotating speed; when the air conditioner is in a heating operation mode, increasing or decreasing a compressor operating frequency according to the indoor pollutant particle concentration and the preset concentration threshold, so as to adjust a corona current of a dust collection device, and / or increasing or decreasing a throttle valve according to different preset opening degrees, so as to adjust the corona current of the dust collection device.

[0018] According to the dust removal control method of the air conditioner, after the static filter device is controlled to be turned on, the operation mode and the indoor pollutant particle concentration are obtained, and the operation states of the indoor fan, the compressor and / or the throttle valve of the air conditioner are controlled. When the air conditioner is in the cooling operation mode, the rotating speed of the indoor fan is adjusted; when the air conditioner is in the heating operation mode, the rotating speed of the indoor fan, the operating frequency of the compressor and / or the opening degree of the throttle valve are adjusted, so as to adjust the corona current of the dust collection device. Through the cooperative control of the rotating speed of the indoor fan, the operating frequency of the compressor and / or the opening degree of the throttle valve, it is ensured that the indoor pollutant particles of different diameters can be fully charged, and the residence time of the indoor pollutant particles in the static filter device is prolonged, the filtering effect of the indoor pollutant particles of different concentrations and different diameters is improved, and the harm of the fine indoor pollutant particles to the human body is reduced.

[0019] In some embodiments, the preset concentration threshold comprises a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold, and the indoor fan is controlled to operate at the first preset rotating speed or the second preset rotating speed according to the indoor pollutant particle concentration and the preset concentration threshold, comprising: when the indoor pollutant particle concentration exceeds the first preset concentration threshold or is between the first preset concentration threshold and the second preset concentration threshold, the indoor fan is controlled to switch from an initial rotating speed to the first preset rotating speed; when the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, the indoor fan is controlled to operate at the second preset rotating speed; and when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, the static filter device is controlled to be turned off, wherein the first preset concentration threshold is greater than the second preset concentration threshold, the second preset concentration threshold is greater than the third preset concentration threshold, and the initial rotating speed is less than the second preset rotating speed.

[0020] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and the attendant drawings or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, wherein:

[0022] Figure 1 is a structural diagram of a dust collecting device of an electrostatic filter device of an air conditioner according to an embodiment of the present application;

[0023] Figure 2 is a structural diagram of a dust collecting filter cartridge of an electrostatic filter device according to an embodiment of the present application;

[0024] Figure 3 is a structural diagram of a dust collecting filter cartridge mounting groove of an electrostatic filter device according to an embodiment of the present application;

[0025] Figure 4 is a structural diagram of a voltage boosting module of an electrostatic filter device according to an embodiment of the present application;

[0026] Figure 5 is a structural diagram of an air conditioner hanging machine air inlet electrostatic filter device mounting groove according to an embodiment of the present application;

[0027] Figure 6 is a structural block diagram of an air conditioner according to an embodiment of the present application;

[0028] Figure 7 is a flowchart of a dust removing control method of an air conditioner according to an embodiment of the present application;

[0029] Figure 8 is a flowchart of a dust removing control method of an air conditioner according to an embodiment of the present application.

[0030] Reference numerals: air conditioner 1;

[0031] Refrigerant circulation circuit 11; compressor 12; indoor fan 13; electrostatic filter device 14; dust collecting device 15; particulate matter sensor 16; controller 17. DETAILED DESCRIPTION

[0032] Embodiments of the present application are described in detail below with reference to the accompanying drawings. Embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0033] In this invention, the air conditioner performs a refrigeration cycle using a compressor, condenser, expansion valve, and evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0034] The compressor compresses refrigerant gas under high temperature and pressure and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0035] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-temperature, low-pressure liquid refrigerant. The evaporator evaporates the expanded refrigerant in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves its cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the air conditioner regulates the temperature of the indoor space.

[0036] The outdoor unit of an air conditioner refers to the part of the refrigeration cycle that includes the compressor and the outdoor heat exchanger. The indoor unit of an air conditioner includes the indoor heat exchanger, and an expansion valve can be provided in either the indoor or outdoor unit.

[0037] The indoor and outdoor heat exchangers function as either condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner functions as a heater in heating mode; when the indoor heat exchanger is used as an evaporator, the air conditioner functions as a cooler in cooling mode.

[0038] Let's combine the following... Figures 1-5 This invention describes an electrostatic filtration device for an air conditioner according to an embodiment of the present invention.

[0039] like Figures 1-5 As shown, the electrostatic filtration device of this embodiment includes: a dust collection device, a dust collection filter element, and a boost module, wherein,

[0040] like Figure 1 The diagram shown is a schematic representation of the dust collection device in an embodiment of the electrostatic filtration device of the present invention. The dust collection device is a flat, all-metal, hollow structure with multiple metal strips distributed in the middle and multiple discharge tips distributed on both sides of the metal strips. The discharge tips can be triangular, conical, or have a small curvature at the top, and are used to discharge into the air to generate negative ions. When fine particles, bacteria, and viruses in the air encounter the ions, they form charged particles, and the bacteria and viruses are also inactivated by the ionized negative ions.

[0041] like Figure 2As shown in the figure, it is a structural schematic diagram of a dust collecting filter core of an electrostatic filter device according to an embodiment of the present application. The dust collecting filter core is a grid structure, in which high potential plates and low potential plates are distributed along the length direction of the filter core. Here, the high potential plates are connected to the positive pole of a power supply, and the low potential plates are connected to the negative pole of the power supply. After being electrified, a high voltage electric field is formed between the plates. Charged particles flowing through the filter core are adsorbed on the charged plates under the action of the electric field force. Bacteria and viruses are inactivated in the high voltage electric field and are adsorbed on the surface of the plates.

[0042] As shown in the figure, it is a structural schematic diagram of a dust collecting filter core of an electrostatic filter device according to an embodiment of the present application. The dust collecting filter core is a grid structure, in which high potential plates and low potential plates are distributed along the length direction of the filter core. Here, the high potential plates are connected to the positive pole of a power supply, and the low potential plates are connected to the negative pole of the power supply. After being electrified, a high voltage electric field is formed between the plates. Charged particles flowing through the filter core are adsorbed on the charged plates under the action of the electric field force. Bacteria and viruses are inactivated in the high voltage electric field and are adsorbed on the surface of the plates. Figure 3 As shown in the figure, it is a structural schematic diagram of a dust collecting filter core mounting slot of an electrostatic filter device according to an embodiment of the present application. A plurality of assembly holes are arranged on the wall surface of the dust collecting device. The assembly holes are matched with the trapezoidal protrusions inside the mounting base of the dust collecting filter core. After complete matching, in order to prevent the dust collecting device from shaking left and right during transportation and installation, causing the installation to be not firm, it is necessary to inject epoxy resin into the installation gap to completely fix the metal charging module on the base of the dust collecting filter core.

[0043] As shown in the figure, it is a structural schematic diagram of a dust collecting filter core mounting slot of an electrostatic filter device according to an embodiment of the present application. A plurality of assembly holes are arranged on the wall surface of the dust collecting device. The assembly holes are matched with the trapezoidal protrusions inside the mounting base of the dust collecting filter core. After complete matching, in order to prevent the dust collecting device from shaking left and right during transportation and installation, causing the installation to be not firm, it is necessary to inject epoxy resin into the installation gap to completely fix the metal charging module on the base of the dust collecting filter core. Figure 4 As shown in the figure, it is a structural schematic diagram of a dust collecting filter core mounting slot of an electrostatic filter device according to an embodiment of the present application. A plurality of assembly holes are arranged on the wall surface of the dust collecting device. The assembly holes are matched with the trapezoidal protrusions inside the mounting base of the dust collecting filter core. After complete matching, in order to prevent the dust collecting device from shaking left and right during transportation and installation, causing the installation to be not firm, it is necessary to inject epoxy resin into the installation gap to completely fix the metal charging module on the base of the dust collecting filter core.

[0044] As shown in the figure, it is a structural schematic diagram of a dust collecting filter core mounting slot of an electrostatic filter device according to an embodiment of the present application. A plurality of assembly holes are arranged on the wall surface of the dust collecting device. The assembly holes are matched with the trapezoidal protrusions inside the mounting base of the dust collecting filter core. After complete matching, in order to prevent the dust collecting device from shaking left and right during transportation and installation, causing the installation to be not firm, it is necessary to inject epoxy resin into the installation gap to completely fix the metal charging module on the base of the dust collecting filter core. Figure 5As shown, it is a structure diagram of the installation slot of the electrostatic filter device of the air conditioner hanging machine air inlet according to an embodiment of the present application. The fixing mode of the electrostatic filter device at the air inlet can not be limited to magnetic attraction, and can also adopt screw fixing, buckle fixing and the like; when the dust collection amount of the electrostatic filter reaches a certain degree and needs to be taken down for cleaning, or the use time reaches a certain period, the electrostatic filter device can be taken down from the air inlet by manually buckling the dust removal handle, and then washed with water; the washing method is to soak in clean water for 10 minutes first, and then wash with tap water for more than 3 minutes; stop washing when no dust is observed in the dust collection filter core with the naked eye; after cleaning and drying, reassemble to the original position, and the dust removal and sterilization effect can be restored to the original state.

[0045] The present application will be described below with reference to Figures 1-7 An air conditioner 1 according to an embodiment of the present application is described.

[0046] As Figure 6 shown, the air conditioner 1 according to an embodiment of the present application comprises a refrigerant circulation loop 11, a compressor 12, an indoor fan 13, an electrostatic filter device 14, a dust collection device 15, a particulate matter sensor 16 and a controller 17, wherein,

[0047] The refrigerant circulation loop 11 circulates the refrigerant in the compressor 12, a condenser, a throttle valve and an evaporator in a circulation loop; the compressor 12 is used to compress low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharge it to the condenser; the indoor fan 13 is used to drive the indoor air to exchange heat with the indoor heat exchanger and then send it out from the air outlet; the electrostatic filter device 14 is arranged at the air inlet of the air conditioner 1 and is used to filter indoor pollutant particles; the dust collection device 15 is arranged in the electrostatic filter device 14 and is used to adsorb indoor pollutant particles; the particulate matter sensor 16 is used to detect the concentration of indoor pollutant particles; the controller 17 is configured to: control the electrostatic filter device 14 to be turned on; determine the operation mode of the air conditioner 1; obtain the concentration of indoor pollutant particles; when the air conditioner 1 is in a cooling operation mode, control the indoor fan 13 to operate at a first preset speed or a second preset speed according to the concentration of indoor pollutant particles and a preset concentration threshold, so that the indoor pollutant particles flow through the electrostatic filter device 14, wherein the first preset speed is greater than the second preset speed; when the air conditioner 1 is in a heating operation mode, control the operating frequency of the compressor 12 to increase or decrease according to the concentration of indoor pollutant particles and the preset concentration threshold, so as to adjust the corona current of the dust collection device 15, and / or control the throttle valve to increase or decrease according to different preset opening degrees, so as to adjust the corona current of the dust collection device 15.

[0048] In the embodiment, the controller 17 controls the electrostatic filter device 14 to be turned on, and the electrostatic filter device 14 charges the pollutant particles in the indoor air, and then the charged pollutant particles move to the vicinity of the dust collecting device 15 along with the airflow, and the dust collecting device 15 is distributed with a high-voltage electric field, and the charged pollutant particles are attracted to the inner surface of the dust collecting device 15 under the action of the electric field force. However, the charging process of the pollutant particles in the dust collecting device 15 is different for different diameters of the pollutant particles. When the diameter of the pollutant particles is greater than 1.0 μm, the electric field charging is dominant. When the diameter of the pollutant particles is less than 0.1 μm, the diffusion charging is dominant. When the diameter of the pollutant particles is between 0.1 μm and 1.0 μm, the electric field charging and the diffusion charging jointly act. The electric field charging refers to that, under the action of an external electric field, ions collide with the pollutant particles in the suspended airflow, and adhere to the pollutant particles to charge the pollutant particles. The diffusion charging refers to a process that the pollutant particles are charged due to the irregular thermal motion and mutual collision of ions and the pollutant particles. The process does not require an external electric field. The charging speed depends on the ion type and concentration, the gas properties and the temperature. After the pollutant particles are charged, the self-generated electric field can reduce the charging speed. Even if there is an external electric field, for the pollutant particles with a diameter less than 0.1 μm, the diffusion charging is still the main way for the pollutant particles to be charged.

[0049] After the controller 17 controls the electrostatic filter device 14 to be turned on, the operation mode of the air conditioner 1 is determined, and the operation mode includes, for example, a cooling operation mode and a heating operation mode. The controller 17 determines the concentration of the pollutant particles in the indoor air and the distribution of the diameters of the pollutant particles according to the concentration of the pollutant particles in the indoor air obtained by the particulate matter sensor 16.

[0050] After the above parameters are obtained, the controller 17 controls the operation states of the related components of the air conditioner 1 according to different operation modes of the air conditioner 1 and different indoor air quality states. For example, when the air conditioner 1 is in the cooling operation mode, the indoor fan 13 is controlled to operate at a first preset speed or a second preset speed according to the concentration of the pollutant particles in the indoor air and a preset concentration threshold, so that the indoor pollutant particles flow through the electrostatic filter device 14. The first preset speed is greater than the second preset speed. By controlling the indoor pollutant particles to flow through the electrostatic filter device 14, the indoor pollutant particles flowing through the air inlet can be fully charged, and can stay in the electric field for a sufficient time, so that the indoor pollutant particles with different diameters can be effectively adsorbed on the dust collecting device 15, thereby improving the filtering efficiency and reducing the phenomenon that some fine particles, for example, the indoor pollutant particles with a diameter of 0.1 μm to 1 μm, escape from the electrostatic filter device 14 due to the too small diameter of the indoor pollutant particles and the too high speed of the indoor fan 13, thereby improving the air purification effect.

[0051] When the air conditioner 1 is in the heating operation mode, the corona current on the surface of the dust collecting device 15 inside the electrostatic filter device 14 gradually increases with the increase of the temperature, and the filtering effect on the particulate matters is better, therefore, the compressor 12 operation frequency is controlled to increase or decrease according to the indoor pollutant particle concentration and the preset concentration threshold, to adjust the corona current of the dust collecting device 15, and / or the throttle valve is controlled to increase or decrease according to different preset opening degrees, to adjust the corona current of the dust collecting device 15. By adjusting the compressor 12 operation frequency and / or the throttle valve opening degree, the temperature near the air inlet of the air conditioner 1 is controlled, and then the corona current of the dust collecting device 15 is adjusted, so as to effectively improve the filtering effect on part of the fine particulate matters.

[0052] By controlling the operation state of the related components of the air conditioner 1 according to different operation modes and different indoor air quality states of the air conditioner 1, the purification efficiency of the indoor pollutant particles with different concentrations and different diameters is improved without changing the structure and power supply voltage of the electrostatic filter device 14, so as to meet the increasingly strict environmental protection standards.

[0053] According to the air conditioner 1 of the embodiment of the present application, after the electrostatic filter device 14 is turned on, the operation mode and the indoor pollutant particle concentration are obtained, and the operation state of the related components of the air conditioner 1 is controlled, when the air conditioner 1 is in the cooling operation mode, the operation speed of the indoor fan 13 is adjusted; when the air conditioner 1 is in the heating operation mode, the operation frequency of the compressor 12 and / or the opening degree of the throttle valve are adjusted to adjust the corona current of the dust collecting device 15, by cooperatively controlling the operation speed of the indoor fan 13, the operation frequency of the compressor 12 and / or the opening degree of the throttle valve, it is guaranteed that the indoor pollutant particles with different diameters can be fully charged, and the residence time of the indoor pollutant particles in the electrostatic filter device 14 is prolonged, the filtering effect of the air conditioner 1 on the indoor pollutant particles with different concentrations and different diameters is improved, so as to reduce the harm of fine indoor pollutant particles to human body.

[0054] In some embodiments, the preset concentration threshold includes a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold, and when the indoor pollutant particle concentration is greater than the first preset concentration threshold or between the first preset concentration threshold and the second preset concentration threshold, the controller 17 is configured to control the indoor fan 13 to switch from the initial speed to the first preset speed, when the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, the indoor fan 13 is controlled to run at the second preset speed, and when the indoor pollutant particle concentration is less than the third preset concentration threshold, the electrostatic filter device 14 is controlled to be closed, wherein the first preset concentration threshold is greater than the second preset concentration threshold, the second preset concentration threshold is greater than the third preset concentration threshold, and the initial speed is less than the second preset speed.

[0055] In an embodiment, the preset concentration threshold includes a first preset concentration threshold, for example denoted as C1, a second preset concentration threshold, for example denoted as C2, and a third preset concentration threshold, for example denoted as C3, the first preset concentration threshold C1 is greater than the second preset concentration threshold C2, the second preset concentration threshold C2 is greater than the third preset concentration threshold C3, for example, the first preset concentration threshold C1 = 200 μg / m 3 , the second preset concentration threshold C2 = 100 μg / m 3 , and the third preset concentration threshold C3 = 50 μg / m 3 .

[0056] When the air conditioner 1 is in the cooling operation mode, it is judged whether the indoor pollutant particle concentration exceeds the second preset concentration threshold C2, that is, whether it exceeds the first preset concentration threshold C1 or is between the first preset concentration threshold C1 and the second preset concentration threshold C2, at this time, the proportion of indoor pollutant particles with larger diameters is large, then the indoor fan 13 is controlled to switch from the initial speed to the first preset speed, the circulation speed of indoor air is accelerated, and more indoor pollutant particles are driven to flow through the electrostatic filter device 14, the filtering efficiency is improved, and the indoor pollutant particle concentration is rapidly reduced.

[0057] When the concentration of indoor pollutant particles is between the second preset concentration threshold C2 and the third preset concentration threshold C3, it is considered that most of the indoor pollutant particles with a larger diameter have been adsorbed on the electrostatic filter device 14, and most of the indoor pollutant particles with a smaller diameter remain, that is, the proportion of indoor pollutant particles with a larger diameter is small, the proportion of indoor pollutant particles with a smaller diameter is large, and the air quality has been greatly improved compared to when the indoor fan 13 is just running. If the indoor fan 13 is controlled to run at a high first preset speed, the residence time of the indoor pollutant particles in the electrostatic filter device 14 is short, and a large part of the indoor pollutant particles with a diameter of 0.1-1.0 μm directly escapes from the space inside the dust collection device 15 due to insufficient or no charging, and the filtering effect of the electrostatic filter device 14 will not be greatly improved. Therefore, the indoor fan 13 is controlled to run at a second preset speed, wherein the initial speed is less than the second preset speed. At this time, the air flow rate at the air inlet of the air conditioner 1 decreases, and the indoor pollutant particles with a larger diameter are fully charged when flowing through the electrostatic filter device 14. The indoor pollutant particles with a smaller diameter have sufficient time for mutual collision and charging between particles due to the slow air flow rate, and the charged fine indoor pollutant particles are adsorbed on the dust collection filter element under the action of the dust collection electric field.

[0058] When the concentration of indoor pollutant particles does not exceed the third preset concentration threshold C3, it is considered that the indoor air quality is good at this time, and the electrostatic filter device 14 is controlled to be closed to reduce the operating noise.

[0059] In some embodiments, the preset concentration threshold includes a first preset concentration threshold, a second preset concentration threshold, and a third preset concentration threshold. When the concentration of indoor pollutant particles and the preset concentration threshold control the increase or decrease of the operating frequency of the compressor 12, the controller 17 is configured to: when the concentration of indoor pollutant particles exceeds the first preset concentration threshold or is between the first preset concentration threshold and the second preset concentration threshold, the operating frequency of the compressor 12 is increased from an initial operating frequency to a first preset operating frequency; when the concentration of indoor pollutant particles is between the second preset concentration threshold and the third preset concentration threshold, the operating frequency of the compressor 12 is reduced from the first preset operating frequency to a second preset operating frequency, wherein the first preset operating frequency is greater than the second preset operating frequency; and when the concentration of indoor pollutant particles does not exceed the third preset concentration threshold, the operating frequency of the compressor 12 is reduced, and the electrostatic filter device 14 is controlled to be closed, wherein the first preset concentration threshold is greater than the second preset concentration threshold, the second preset concentration threshold is greater than the third preset concentration threshold, and the initial operating frequency is less than the second operating frequency.

[0060] In embodiments, the preset concentration threshold value includes: a first preset concentration threshold value, denoted as C1, a second preset concentration threshold value, denoted as C2, and a third preset concentration threshold value, denoted as C3. The first preset concentration threshold value C1 is greater than the second preset concentration threshold value C2, and the second preset concentration threshold value C2 is greater than the third preset concentration threshold value C3. For example, the first preset concentration threshold value C1 = 200 μg / m 3 , the second preset concentration threshold value C2 = 100 μg / m 3 , and the third preset concentration threshold value C3 = 50 μg / m 3 .

[0061] When the air conditioner 1 is in a heating operation mode, it is determined whether the concentration of indoor pollutant particles exceeds the second preset concentration threshold value C2, i.e., whether it exceeds the first preset concentration threshold value C1 or is between the first preset concentration threshold value C1 and the second preset concentration threshold value C2. At this time, the proportion of indoor pollutant particles with a larger diameter is large, and thus the operating frequency of the compressor 12 is controlled to increase from an initial operating frequency, denoted as f0, to a first preset operating frequency, denoted as 1.2f0. The heating capacity of the heat exchanger is increased, and because the electrostatic filter device 14 is arranged at the air inlet of the air conditioner 1 and is close to the surface of the heat exchanger, the temperature of the dust collection device 15 in the electrostatic filter device 14 also increases accordingly. Therefore, the corona current on the surface of the dust collection device 15 increases, and the purification efficiency of indoor pollutant particles is enhanced.

[0062] When the concentration of indoor pollutant particles is between the second preset concentration threshold value C2 and the third preset concentration threshold value C3, it is considered that most of the indoor pollutant particles with a larger diameter have been adsorbed on the electrostatic filter device 14, and most of the remaining indoor pollutant particles have a smaller diameter, i.e., the proportion of indoor pollutant particles with a larger diameter is small, and the proportion of indoor pollutant particles with a smaller diameter is large. The air quality has been greatly improved compared to when the indoor fan 13 is just started. If the compressor 12 is controlled to operate at a high first preset operating frequency 1.2f0, the residence time of indoor pollutant particles in the electrostatic filter device 14 is short, and a large part of the indoor pollutant particles with a diameter of 0.1-1.0 μm directly escape from the space inside the dust collection device 15 because of insufficient or no charging. The filtering effect of the electrostatic filter device 14 will not be greatly improved. Therefore, the operating frequency of the compressor 12 is controlled to decrease from the first preset operating frequency 1.2f0 to a second preset operating frequency, denoted as 1.1f0. The energy consumption of the air conditioner 1 can be appropriately reduced, and the operating noise of the air conditioner 1 can also be reduced.

[0063] When the concentration of indoor pollutant particles does not exceed the third preset concentration threshold value C3, it is considered that the indoor air quality is good at this time. Therefore, the operating frequency of the compressor 12 is reduced, and the electrostatic filter device 14 is controlled to be closed to reduce the operating noise.

[0064] In some embodiments, the preset concentration threshold comprises a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold, and the controller 17 is configured to: when the indoor pollutant particle concentration exceeds the first preset concentration threshold or is between the first preset concentration threshold and the second preset concentration threshold, control the throttle valve to increase from the initial opening according to the first preset opening threshold until the opening of the throttle valve reaches the first opening; when the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, control the throttle valve to increase from the initial opening according to the second preset opening threshold until the opening of the throttle valve reaches the first opening; and when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, control the throttle valve to adjust to the initial opening and control the electrostatic filtration device 14 to be closed, wherein the first opening is greater than the initial opening, the first preset opening threshold is greater than the second preset opening threshold, the first preset concentration threshold is greater than the second preset concentration threshold, and the second preset concentration threshold is greater than the third preset concentration threshold.

[0065] In embodiments, the preset concentration threshold comprises a first preset concentration threshold, for example denoted as C1, a second preset concentration threshold, for example denoted as C2, and a third preset concentration threshold, for example denoted as C3, the first preset concentration threshold C1 is greater than the second preset concentration threshold C2, the second preset concentration threshold C2 is greater than the third preset concentration threshold C3, for example the first preset concentration threshold C1 = 200 μg / m3, the second preset concentration threshold C2 = 100 μg / m3, and the third preset concentration threshold C3 = 50 μg / m3. 3 3 3 .

[0066] When the air conditioner 1 is in the heating operation mode, it is determined whether the indoor pollutant particle concentration exceeds the second preset concentration threshold C2, i.e. whether it exceeds the first preset concentration threshold C1 or is between the first preset concentration threshold C1 and the second preset concentration threshold C2, at this time, the proportion of indoor pollutant particles with larger diameters is large, then the throttle valve is controlled to increase from the initial opening according to the first preset opening threshold until the opening of the throttle valve reaches the first opening, i.e. the maximum opening, for example, the throttle valve is controlled to increase from the initial opening according to a 20% opening, if the first opening, i.e. the maximum opening, is not reached after the increase, the increase according to the 20% opening is continued until the opening of the throttle valve reaches the first opening, i.e. the maximum opening.

[0067] ​​When the concentration of indoor pollutant particles is between the second preset concentration threshold C2 and the third preset concentration threshold C3, it is considered that most of the indoor pollutant particles with a larger diameter have been adsorbed on the electrostatic filter device 14, and most of the indoor pollutant particles with a smaller diameter remain, that is, the proportion of indoor pollutant particles with a larger diameter is small, the proportion of indoor pollutant particles with a smaller diameter is large, and the air quality has been greatly improved compared to when the indoor fan 13 is just running. If the control throttle valve is kept at a higher first preset opening threshold, the residence time of indoor pollutant particles inside the electrostatic filter device 14 is short, and a large part of indoor pollutant particles with a diameter of 0.1-1.0 μm escapes directly from the space inside the dust collection device 15 due to insufficient or no charging, and the filtering effect of the electrostatic filter device 14 will not be greatly improved. Therefore, the control throttle valve is raised from the initial opening according to the second preset opening threshold until the opening of the control throttle valve reaches the first opening, that is, the maximum opening. For example, the control throttle valve is raised by 10% from the initial opening. If the first opening, that is, the maximum opening, is not reached after the raising, the control throttle valve is continuously raised by 10% until the opening of the control throttle valve reaches the first opening, that is, the maximum opening.

[0068] When the concentration of indoor pollutant particles does not exceed the third preset concentration threshold C3, it is considered that the indoor control quality at this time is good, and then the control throttle valve is adjusted to the initial opening, and the electrostatic filter device 14 is controlled to be closed to reduce the operating noise.

[0069] In some embodiments, after the electrostatic filter device 14 is controlled to be closed, the controller 17 is further configured to control the indoor fan 13 to switch to the initial rotating speed.

[0070] In an embodiment, when the air conditioner 1 is in a cooling operation mode, and the concentration of indoor pollutant particles does not exceed the third preset concentration threshold C3, it is considered that the indoor control quality at this time is good, and then the electrostatic filter device 14 is controlled to be closed. After the electrostatic filter device 14 is controlled to be closed, the indoor fan 13 is controlled to switch to the initial rotating speed, so that the air conditioner 1 continues to meet the user's demand.

[0071] In some embodiments, after the electrostatic filter device 14 is controlled to be closed, the controller 17 is further configured to control the operating frequency of the compressor 12 to switch to the initial operating frequency.

[0072] In an embodiment, when the air conditioner 1 is in a heating operation mode, and the concentration of indoor pollutant particles does not exceed the third preset concentration threshold C3, it is considered that the indoor control quality at this time is good, and then the electrostatic filter device 14 is controlled to be closed. After the electrostatic filter device 14 is controlled to be closed, the operating frequency of the compressor 12 is controlled to switch to the initial operating frequency f0, so that the air conditioner 1 continues to meet the user's demand.

[0073] In some embodiments, after the electrostatic filter 14 is turned off, the controller 17 is further configured to: acquire the indoor pollutant particle concentration again; and when the indoor pollutant particle concentration exceeds a second preset concentration threshold, control the electrostatic filter 14 to turn on again.

[0074] In this embodiment, the particulate sensor 16 continuously detects the concentration of indoor pollutant particles. After the electrostatic filter 14 is turned off, the controller 17 acquires the concentration of indoor pollutant particles again. When the concentration of indoor pollutant particles exceeds the second preset concentration threshold C2 again, it is considered that the indoor control quality is poor. Then, the controller turns on the electrostatic filter 14 again to filter indoor pollutant particles.

[0075] In some embodiments, when acquiring the indoor pollutant particle concentration, the controller 17 is further configured to acquire the indoor pollutant particle concentration at preset intervals.

[0076] In this embodiment, the particulate sensor 16 continuously detects the concentration of indoor pollutant particles, and the controller 17 acquires the concentration of indoor pollutant particles at preset intervals to obtain more accurate data.

[0077] The following is for reference. Figure 7 An example of the dust removal control method for an air conditioner according to an embodiment of the present invention will be provided.

[0078] like Figure 7 As shown, the dust removal control method for an air conditioner according to an embodiment of the present invention includes at least steps S11-S34.

[0079] Step S11: Control the electrostatic dust removal device to start.

[0080] Step S12: Determine the operating mode of the air conditioner.

[0081] Step S13: Obtain the indoor pollutant particle concentration at preset time intervals.

[0082] Step S14: Determine whether the air conditioner is in cooling mode. If yes, proceed to step S15; otherwise, proceed to steps S21 and S26.

[0083] Step S15: Determine whether the indoor pollutant particle concentration exceeds the second preset concentration threshold. If yes, proceed to step S16; otherwise, proceed to step S17.

[0084] Step S16: Control the indoor fan to switch from the initial speed to the first preset speed.

[0085] Step S17: Determine whether the indoor pollutant particle concentration exceeds the third preset concentration threshold. If yes, proceed to step S18; otherwise, proceed to step S19.

[0086] Step S18, control the indoor fan to run at a second preset rotating speed.

[0087] Step S19, control the electrostatic dust removal device to be closed.

[0088] Step S20, control the indoor fan to switch to an initial rotating speed.

[0089] Step S21, judge whether the indoor pollutant particle concentration exceeds a second preset concentration threshold, if yes, execute step S22; otherwise, execute step S23.

[0090] Step S22, control the compressor operating frequency to increase from an initial operating frequency to a first preset operating frequency.

[0091] Step S23, judge whether the indoor pollutant particle concentration exceeds a third preset concentration threshold, if yes, execute step S24; otherwise, execute step S25.

[0092] Step S24, control the compressor operating frequency to decrease from the first preset operating frequency to a second preset operating frequency.

[0093] Step S25, control the compressor operating frequency to decrease, and control the electrostatic dust removal device to be closed.

[0094] Step S26, judge whether the indoor pollutant particle concentration exceeds the second preset concentration threshold, if yes, execute step S27; otherwise, execute step S28.

[0095] Step S27, control the throttle valve to increase from an initial opening according to a first preset opening threshold until the opening of the throttle valve reaches a first opening.

[0096] Step S28, judge whether the indoor pollutant particle concentration exceeds the third preset concentration threshold, if yes, execute step S29; otherwise, execute step S30.

[0097] Step S29, control the throttle valve to increase from the initial opening according to a second preset opening threshold until the opening of the throttle valve reaches the first opening.

[0098] Step S30, control the throttle valve to adjust to the initial opening, and control the electrostatic dust removal device to be closed.

[0099] Step S31, control the compressor operating frequency to switch to the initial operating frequency.

[0100] Step S32, acquire the indoor pollutant particle concentration again.

[0101] Step S33, judge whether the indoor pollutant particle concentration exceeds the second preset concentration threshold, if yes, execute step S34; otherwise, execute step S32.

[0102] Step S34, control the electrostatic precipitation device to open again.

[0103] According to the air conditioner 1 of the embodiment of the present application, after the electrostatic filter device 14 is controlled to open, the operation mode and the concentration of indoor pollutant particles are obtained, and the operation states of relevant components of the air conditioner 1 are controlled correspondingly. When the air conditioner 1 is in the cooling operation mode, the operation speed of the indoor fan 13 is adjusted. When the air conditioner 1 is in the heating operation mode, the operation frequency of the compressor 12 and / or the opening degree of the throttling valve are adjusted to adjust the corona current of the dust collection device 15. Through the coordinated control of the operation speed of the indoor fan 13, the operation frequency of the compressor 12 and / or the opening degree of the throttling valve, it is ensured that indoor pollutant particles of different diameters can be fully charged, and the residence time of indoor pollutant particles in the electrostatic filter device 14 is prolonged, the filtering effect of the air conditioner 1 on indoor pollutant particles of different concentrations and different diameters is improved, and thus the harm of small indoor pollutant particles to human body is reduced.

[0104] The air conditioner according to the embodiment of the present application will be described below. Figure 8 The dust control method of the air conditioner according to the embodiment of the present application will be described below.

[0105] As shown in Figure 8 , the dust control method of the air conditioner according to the embodiment of the present application at least includes steps S1-S5.

[0106] Step S1, control the electrostatic filter device to open.

[0107] In the embodiment, the controller controls the electrostatic filter device to open, the electrostatic filter device makes the pollutant particles in the indoor air to be charged, and then the charged pollutant particles move to the vicinity of the dust collection device along with the airflow. The dust collection device is distributed with a high-voltage electric field, and the charged pollutant particles are adsorbed to the inner surface of the dust collection device under the action of the electric field force. However, there is a great difference in the charging process of the pollutant particles in the dust collection device for different diameters of the pollutant particles. When the diameter of the pollutant particles is greater than 1.0 μm, the electric field charging is dominant. When the diameter of the pollutant particles is less than 0.1 μm, the diffusion charging is dominant. When the diameter of the pollutant particles is 0.1-1.0 μm, the electric field charging and the diffusion charging jointly act. The electric field charging refers to that under the action of an external electric field, ions collide with the pollutant particles in the suspended airflow, and adhere to the pollutant particles to charge the pollutant particles. The diffusion charging refers to the process that the pollutant particles are charged due to the irregular thermal motion and mutual collision of ions and the pollutant particles. This process does not require an external electric field. The charging speed depends on the ion type and concentration, the gas properties and the temperature. After the pollutant particles obtain the electric charge, the self-generated electric field can reduce the charging speed. Even if there is an external electric field, for the pollutant particles with a diameter less than 0.1 μm, the diffusion charging is still the main way for the pollutant particles to be charged.

[0108] Step S2, determine the operation mode of the air conditioner.

[0109] In embodiments, the controller determines an operation mode of the air conditioner after the electrostatic filter device is turned on, and the operation mode includes, for example, a cooling operation mode and a heating operation mode.

[0110] In step S3, the concentration of indoor pollutant particles is obtained.

[0111] In embodiments, the controller obtains the concentration of indoor pollutant particles according to the particulate matter sensor, thereby determining the concentration of pollutant particles and the distribution of diameters of the pollutant particles in the indoor air.

[0112] In step S4, when the air conditioner is in the cooling operation mode, the indoor fan is controlled to operate at a first preset speed or a second preset speed according to the concentration of indoor pollutant particles and a preset concentration threshold, so that the indoor pollutant particles flow through the electrostatic filter device, and the first preset speed is greater than the second preset speed.

[0113] In embodiments, the controller controls the operation states of related components of the air conditioner according to different operation modes and different indoor air quality states of the air conditioner. For example, when the air conditioner is in the cooling operation mode, the indoor fan is controlled to operate at a first preset speed or a second preset speed according to the concentration of indoor pollutant particles and a preset concentration threshold, so that the indoor pollutant particles flow through the electrostatic filter device, and the first preset speed is greater than the second preset speed. By controlling the indoor pollutant particles to flow through the electrostatic filter device, the indoor pollutant particles flowing through the air inlet can be fully charged and stay in the electric field for a sufficient time, so that indoor pollutant particles of different diameters can be effectively adsorbed on the dust collection device, thereby improving the filtering efficiency and reducing the escape of small particles, such as indoor pollutant particles with diameters of 0.1 μm-1 μm, from the electrostatic filter device due to the small diameter of the indoor pollutant particles and the high speed of the indoor fan, thereby improving the air purification effect.

[0114] In step S5, when the air conditioner is in the heating operation mode, the frequency of the compressor is controlled to increase or decrease according to the concentration of indoor pollutant particles and a preset concentration threshold, so as to adjust the corona current of the dust collection device, and / or the throttle valve is controlled to increase or decrease according to different preset opening degrees, so as to adjust the corona current of the dust collection device.

[0115] In the embodiments, when the air conditioner is in the heating operation mode, the compressor operation frequency is controlled to increase or decrease according to the indoor pollutant particle concentration and the preset concentration threshold, so as to adjust the corona current of the dust collection device, and / or the throttle valve is controlled to increase or decrease according to different preset opening degrees, so as to adjust the corona current of the dust collection device. By adjusting the compressor operation frequency to control the temperature near the air inlet of the air conditioner, and then adjusting the corona current of the dust collection device, it can be understood that the greater the corona current on the dust collection device, the better the dust collection effect, thereby effectively improving the filtering effect on part of the fine particulate matter.

[0116] According to the dust removal control method of the air conditioner in the embodiments of the present application, after the electrostatic filter device is turned on, the operation mode and the indoor pollutant particle concentration are obtained, and the operation state of the related components of the air conditioner is controlled. When the air conditioner is in the cooling operation mode, the operation speed of the indoor fan is adjusted; when the air conditioner is in the heating operation mode, the operation frequency of the compressor and / or the opening degree of the throttle valve are adjusted to adjust the corona current of the dust collection device. By cooperatively controlling the operation speed of the indoor fan, the operation frequency of the compressor and / or the opening degree of the throttle valve, it is ensured that indoor pollutant particles of different diameters can be fully charged, and the residence time of indoor pollutant particles in the electrostatic filter device is prolonged, thereby improving the filtering effect on indoor pollutant particles of different concentrations and different diameters, and reducing the harm of fine indoor pollutant particles to the human body.

[0117] In some embodiments, the preset concentration threshold includes a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold. Controlling the indoor fan to operate at a first preset speed or a second preset speed according to the indoor pollutant particle concentration and the preset concentration threshold includes: when the indoor pollutant particle concentration exceeds the first preset concentration threshold or is between the first preset concentration threshold and the second preset concentration threshold, controlling the indoor fan to switch from an initial speed to the first preset speed; when the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, controlling the indoor fan to operate at the second preset speed; and when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, controlling the electrostatic filter device to be turned off, wherein the first preset concentration threshold is greater than the second preset concentration threshold, the second preset concentration threshold is greater than the third preset concentration threshold, and the initial speed is less than the second preset speed.

[0118] In some embodiments, the preset concentration threshold includes a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold, and the control of the increase or decrease of the frequency of the compressor 12 according to the indoor pollutant particle concentration and the preset concentration threshold includes: when the indoor pollutant particle concentration exceeds the first preset concentration threshold or is between the first preset concentration threshold and the second preset concentration threshold, the frequency of the compressor is controlled to increase from an initial frequency to a first preset frequency; when the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, the frequency of the compressor is controlled to decrease from the first preset frequency to a second preset frequency, wherein the first preset frequency is greater than the second preset frequency; and when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, the frequency of the compressor is controlled to decrease, and the electrostatic filter device is controlled to be closed, wherein the first preset concentration threshold is greater than the second preset concentration threshold, the second preset concentration threshold is greater than the third preset concentration threshold, and the initial frequency is less than the second frequency.

[0119] In some embodiments, the preset concentration threshold includes a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold, and the control of the increase or decrease of the opening of the throttle valve according to different preset opening degrees includes: when the indoor pollutant particle concentration exceeds the first preset concentration threshold or is between the first preset concentration threshold and the second preset concentration threshold, the throttle valve is controlled to increase from an initial opening according to a first preset opening threshold until the opening of the throttle valve reaches a first opening; when the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, the throttle valve is controlled to increase from the initial opening according to a second preset opening threshold until the opening of the throttle valve reaches the first opening; and when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, the throttle valve is controlled to adjust to the initial opening, and the electrostatic filter device is controlled to be closed, wherein the first opening is greater than the initial opening, the first preset opening threshold is greater than the second preset opening threshold, the first preset concentration threshold is greater than the second preset concentration threshold, and the second preset concentration threshold is greater than the third preset concentration threshold.

[0120] In some embodiments, after the electrostatic filter device is controlled to be closed, the method further includes: controlling the indoor fan to switch to an initial rotating speed.

[0121] In some embodiments, after the electrostatic filter device is controlled to be closed, the method further includes: controlling the frequency of the compressor to switch to an initial frequency.

[0122] In some embodiments, after the electrostatic filter device is controlled to be closed, the method further includes: reacquiring the indoor pollutant particle concentration; and when the indoor pollutant particle concentration exceeds a second preset concentration threshold, controlling the electrostatic filter device to be opened again.

[0123] In some embodiments, the reacquiring of the indoor pollutant particle concentration includes: reacquiring the indoor pollutant particle concentration every preset time.

[0124] According to the dust control method of the air conditioner, after the electrostatic filter device is turned on, the operation mode and the indoor pollutant particle concentration are obtained, and the operation state of the related components of the air conditioner is controlled correspondingly. When the air conditioner is in the cooling operation mode, the operation speed of the indoor fan is adjusted. When the air conditioner is in the heating operation mode, the operation frequency of the compressor and / or the opening degree of the throttle valve are adjusted to adjust the corona current of the dust collection device. Through the cooperative control of the operation speed of the indoor fan, the operation frequency of the compressor and / or the opening degree of the throttle valve, it is ensured that indoor pollutant particles of different diameters can be fully charged, and the residence time of indoor pollutant particles in the electrostatic filter device is prolonged, the filtration effect of indoor pollutant particles of different concentrations and different diameters is improved, thereby reducing the harm of fine indoor pollutant particles to the human body.

[0125] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means 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 application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example.

[0126] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An air conditioner characterized by comprising: The air conditioner comprises: a refrigerant circulation loop, in which refrigerant is circulated through a compressor, a condenser, a throttle valve and an evaporator; a compressor configured to compress low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharge the high-temperature and high-pressure refrigerant gas to the condenser; an indoor fan configured to drive indoor air to exchange heat with an indoor heat exchanger and then be discharged from an air outlet; an electrostatic filter device arranged at an air inlet of the air conditioner and configured to filter indoor pollutant particles; a dust collection device arranged in the electrostatic filter device and configured to adsorb the indoor pollutant particles; a particulate matter sensor configured to detect a concentration of the indoor pollutant particles; a controller configured to: control the electrostatic filter device to be turned on; determine an operation mode of the air conditioner; obtain the concentration of the indoor pollutant particles; when the air conditioner is in a cooling operation mode, control the indoor fan to operate at a first preset rotating speed or a second preset rotating speed according to the concentration of the indoor pollutant particles and a preset concentration threshold, so that the indoor pollutant particles flow through the electrostatic filter device, wherein the first preset rotating speed is greater than the second preset rotating speed; when the air conditioner is in a heating operation mode, control a frequency of the compressor to increase or decrease according to the concentration of the indoor pollutant particles and the preset concentration threshold, so as to adjust a corona current of the dust collection device, and / or 2. The air conditioner of claim 1, wherein control the throttle valve to increase or decrease according to different preset opening degrees, so as to adjust the corona current of the dust collection device. The preset concentration threshold comprises a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold, and when the controller controls the indoor fan to operate at the first preset rotating speed or the second preset rotating speed according to the concentration of the indoor pollutant particles and the preset concentration threshold, the controller is configured to: when the concentration of the indoor pollutant particles exceeds the first preset concentration threshold or is between the first preset concentration threshold and the second preset concentration threshold, control the indoor fan to switch from an initial rotating speed to the first preset rotating speed; when the concentration of the indoor pollutant particles is between the second preset concentration threshold and the third preset concentration threshold, control the indoor fan to operate at the second preset rotating speed; 3. The air conditioner of claim 1, wherein when the concentration of the indoor pollutant particles does not exceed the third preset concentration threshold, control the electrostatic filter device to be turned off, wherein the first preset concentration threshold is greater than the second preset concentration threshold, the second preset concentration threshold is greater than the third preset concentration threshold, and the initial rotating speed is less than the second preset rotating speed. The preset concentration threshold comprises a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold, and when the controller controls the frequency of the compressor to increase or decrease according to the concentration of the indoor pollutant particles and the preset concentration threshold, the controller is configured to: when the concentration of the indoor pollutant particles exceeds the first preset concentration threshold or is between the first preset concentration threshold and the second preset concentration threshold, control the frequency of the compressor to increase from an initial frequency to a first preset frequency; when the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, controlling the compressor operating frequency to decrease from the first preset operating frequency to a second preset operating frequency, wherein the first preset operating frequency is greater than the second preset operating frequency; when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, controlling the compressor operating frequency to decrease and controlling the electrostatic filtration device to be closed, wherein the first preset concentration threshold is greater than the second preset concentration threshold, the second preset concentration threshold is greater than the third preset concentration threshold, and the initial operating frequency is less than the second preset operating frequency.

4. The air conditioner of claim 1, wherein The preset concentration thresholds include a first preset concentration threshold, a second preset concentration threshold, and a third preset concentration threshold, and when the throttle valve is controlled to increase or decrease according to different preset opening degrees, the controller is configured to: when the indoor pollutant particle concentration exceeds the first preset concentration threshold or is between the first preset concentration threshold and the second preset concentration threshold, controlling the throttle valve to increase from an initial opening degree according to a first preset opening threshold until the opening degree of the throttle valve reaches a first opening degree; when the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, controlling the throttle valve to increase from the initial opening degree according to a second preset opening threshold until the opening degree of the throttle valve reaches the first opening degree; when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, controlling the throttle valve to adjust to the initial opening degree and controlling the electrostatic filtration device to be closed, wherein the first opening degree is greater than the initial opening degree, the first preset opening threshold is greater than the second preset opening threshold, the first preset concentration threshold is greater than the second preset concentration threshold, and the second preset concentration threshold is greater than the third preset concentration threshold.

5. The air conditioner of claim 2, wherein After the electrostatic filtration device is controlled to be closed, the controller is further configured to: controlling the indoor fan to switch to the initial rotating speed.

6. The air conditioner of claim 3, wherein After the electrostatic filtration device is controlled to be closed, the controller is further configured to: controlling the compressor operating frequency to switch to the initial operating frequency.

7. The air conditioner according to any one of claims 2 to 4, wherein After the electrostatic filtration device is controlled to be closed, the controller is further configured to: reacquiring the indoor pollutant particle concentration; when the indoor pollutant particle concentration exceeds the second preset concentration threshold, controlling the electrostatic filtration device to be opened again.

8. The air conditioner of claim 1, wherein When the indoor pollutant particle concentration is acquired, the controller is further configured to: acquiring the indoor pollutant particle concentration every preset time.

9. A dust removal control method of an air conditioner, characterized by, comprising: controlling the electrostatic filtration device to be opened; determining the operating mode of the air conditioner; acquiring the indoor pollutant particle concentration; when the air conditioner is in a cooling operating mode, controlling the indoor fan to operate at a first preset rotating speed or a second preset rotating speed according to the indoor pollutant particle concentration and a preset concentration threshold, so that the indoor pollutant particle flows through the electrostatic filtration device, wherein the first preset rotating speed is greater than the second preset rotating speed; when the air conditioner is in a heating operation mode, according to the indoor pollutant particle concentration and a preset concentration threshold, the compressor operation frequency is controlled to increase or decrease, so as to adjust the corona current of the dust collection device, and / or the throttle valve is controlled to increase or decrease according to different preset opening degrees, so as to adjust the corona current of the dust collection device.

10. The dust removal control method of the air conditioner according to claim 9, wherein The preset concentration threshold includes a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold, and the indoor fan is controlled to operate at a first preset rotating speed or a second preset rotating speed according to the indoor pollutant particle concentration and the preset concentration threshold, including: When the indoor pollutant particle concentration exceeds the first preset concentration threshold or is between the first preset concentration threshold and the second preset concentration threshold, the indoor fan is controlled to switch from an initial rotating speed to the first preset rotating speed; When the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, the indoor fan is controlled to operate at the second preset rotating speed; When the indoor pollutant particle concentration does not exceed the third preset concentration threshold, the electrostatic filter device is controlled to be closed, wherein the first preset concentration threshold is greater than the second preset concentration threshold, the second preset concentration threshold is greater than the third preset concentration threshold, and the initial rotating speed is less than the second preset rotating speed.

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