Air conditioner and dust removal control method thereof

Abstract

The invention provides an air conditioner and a dust removal control method thereof, and the air conditioner comprises a controller which is configured to control an electrostatic filtering device to be started; determining an operation mode of the air conditioner; the indoor pollutant particle concentration is obtained; when the air conditioner is in a refrigeration operation mode, an 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 a preset concentration threshold value, so that indoor pollutant particles flow through an electrostatic filtering device; and when the air conditioner is in a heating operation mode, the operation frequency of the compressor is controlled to be increased or decreased according to the indoor pollutant particle concentration and a preset concentration threshold value, and / or the throttling valve is controlled to be increased or decreased according to different preset opening degrees. The staying time in the electrostatic filtering device is prolonged, and the filtering effect on indoor pollutant particles with different concentrations and different diameters is improved, so that the harm to a human body is reduced.

Description

Technical Field

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

[0002] Air quality issues have increasingly become a major problem that plagues my country's living environment. The smog weather in winter has caused great trouble to people's production and life. Users have an increasingly strong demand for the dust removal and sterilization functions of air conditioners, and electrostatic filtration devices are becoming more and more common.

[0003] At present, electrostatic filtration devices generally use IFD (Intense Field Dielectric, a strong electric field using dielectric materials as carriers) electrostatic dust collection modules to filter indoor pollutant particles. The IFD electrostatic dust collection module is small in size, low in noise, non-consumable, and has a good dust removal effect.

[0004] However, when using the IFD electrostatic dust collection module for dust removal, because the air quality is generally poor when the air conditioner is working, the electrostatic filter device has a better filtering effect on indoor pollutant particles with larger diameters, usually reaching more than 99%, but the filtering effect is poor for some fine indoor pollutant particles with diameters between 0.1-1.0μm, causing some fine indoor pollutant particles to escape from the electrostatic filter device, but the fine indoor pollutant particles account for a low proportion of the total amount of particulate matter. The filtration efficiency of more than 99% of the dust removal device often masks the problem of poor purification effect of fine indoor pollutant particles. The air purification is not thorough, resulting in fine indoor pollutant particles posing a threat to the human body. For example, PM1.0 can enter the human alveoli, causing great harm to the human body. Summary of the invention

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

[0006] To this end, one object of the present invention is to provide 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 an electrostatic filtration device, thereby improving the filtration effect on indoor pollutant particles of different concentrations and diameters, thereby reducing the harm caused to the human body by fine indoor pollutant particles.

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

[0008] In order to achieve the above-mentioned purpose, an embodiment of the first aspect of the present invention proposes an air conditioner, which includes: a refrigerant circulation loop, so that the refrigerant circulates in the circulation loop among a compressor, a condenser, a throttle valve and an evaporator; a compressor, which is used to compress low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharge it to a condenser; an indoor fan, which 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, which is arranged at the air inlet of the air conditioner, and is used to filter indoor pollutant particles; a dust collection device, which is arranged in the electrostatic filter device, and is used to adsorb the indoor pollutant particles; a particle sensor, which is used to detect the concentration of indoor pollutant particles; and a controller, which is configured to: control Control the electrostatic filtering device to turn on; determine the operating mode of the air conditioner; obtain the indoor pollutant particle concentration; when the air conditioner is in the cooling operation mode, control the indoor fan to operate at a first preset speed or a second preset speed according to the indoor pollutant particle concentration and a preset concentration threshold, so that the indoor pollutant particles flow through the electrostatic filtering device, wherein the first preset speed is greater than the second preset speed; when the air conditioner is in the heating operation mode, control the compressor operating frequency 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 collecting device, and / or control the throttle valve to increase or decrease according to different preset openings, so as to adjust the corona current of the dust collecting device.

[0009] According to the air conditioner of the embodiment of the present invention, after the electrostatic filtering device is controlled to be turned on, the operating mode and the concentration of indoor pollutant particles are obtained, and the operating status of the indoor fan, compressor and / or throttle valve of the air conditioner is controlled accordingly. When the air conditioner is in the cooling operation mode, the operating speed of the indoor fan is adjusted; when the air conditioner is in the heating operation mode, the operating frequency of the compressor and / or the opening of the throttle valve are adjusted to adjust the corona current of the dust collecting device. By cooperatively controlling the operating speed of the indoor fan, the operating frequency of the compressor and / or the opening of the throttle valve, it is ensured that indoor pollutant particles of different diameters can be fully charged, and the residence time of the indoor pollutant particles in the electrostatic filtering device is extended, thereby improving the filtering effect on indoor pollutant particles of different concentrations and diameters, thereby reducing the harm caused to the human body by fine indoor pollutant particles.

[0010] 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 indoor fan is controlled to operate at a first preset speed or a second preset speed according to the indoor pollutant particle concentration and the preset concentration threshold, the controller is configured as follows: 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 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 is controlled to operate at the second preset speed; when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, the electrostatic filtering 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 speed is less than the second preset speed.

[0011] In some embodiments, the preset concentration thresholds include: a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold. When the compressor operating frequency is controlled to increase or decrease according to the indoor pollutant particle concentration and the preset concentration threshold, the controller is configured as follows: 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 compressor operating frequency is controlled to increase from the initial operating frequency to the first preset operating frequency; when the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, the compressor operating frequency is controlled to decrease from the first preset operating frequency to the 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, the compressor operating frequency is controlled to decrease, and the electrostatic filtration 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 operating frequency is less than the second operating frequency.

[0012] In some embodiments, the preset concentration thresholds include: a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold. When the throttle valve is controlled to increase or decrease according to different preset openings, the controller is configured as follows: 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 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, the throttle valve is controlled to increase from the initial opening according to the second preset opening threshold until the opening of the throttle valve reaches the first opening; when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, the throttle valve is controlled to be adjusted to the initial opening, and the electrostatic filtering 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.

[0013] In some embodiments, after controlling the electrostatic filtering device to be turned off, the controller is further configured to: control the indoor fan to switch to the initial speed.

[0014] In some embodiments, after controlling the electrostatic filtering device to be turned off, 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 controlling the electrostatic filtering device to be turned off, the controller is further configured to: obtain the indoor pollutant particle concentration again; and control the electrostatic filtering device to be turned on again when the indoor pollutant particle concentration exceeds the second preset concentration threshold.

[0016] In some embodiments, when obtaining the indoor pollutant particle concentration, the controller is further configured to: obtain the indoor pollutant particle concentration at preset time intervals.

[0017] In order to achieve the above-mentioned purpose, an embodiment of the second aspect of the present invention proposes a dust removal control method for an air conditioner, and the dust removal control method for the air conditioner includes: controlling the electrostatic filtering device to turn on; determining the operating mode of the air conditioner; obtaining the indoor pollutant particle concentration; when the air conditioner is in the cooling operation mode, controlling the indoor fan to operate at a first preset speed or a second preset speed according to the indoor pollutant particle concentration and a preset concentration threshold, so that the indoor pollutant particles flow through the electrostatic filtering device, wherein the first preset speed is greater than the second preset speed; when the air conditioner is in the heating operation mode, controlling the compressor operating frequency 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, and / or controlling the throttle valve to increase or decrease according to different preset openings to adjust the corona current of the dust collecting device.

[0018] According to the dust removal control method of the air conditioner according to the embodiment of the present invention, after the electrostatic filtering device is turned on, the operation mode and the indoor pollutant particle concentration are obtained, and the operation status of the indoor fan, compressor and / or throttle valve of the air conditioner is controlled accordingly. When the air conditioner is in the cooling operation mode, the operating speed of the indoor fan is adjusted; when the air conditioner is in the heating operation mode, the operating frequency of the compressor and / or the opening of the throttle valve are adjusted to adjust the corona current of the dust collecting device. By cooperatively controlling the operating speed of the indoor fan, the operating frequency of the compressor and / or the opening of the throttle valve, it is ensured that indoor pollutant particles of different diameters can be fully charged, and the residence time of the indoor pollutant particles in the electrostatic filtering device is extended, thereby improving the filtering effect on indoor pollutant particles of different concentrations and diameters, thereby reducing the harm caused to the human body by fine indoor pollutant particles.

[0019] 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 indoor fan is controlled to operate at a first preset speed or a second preset 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 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 is controlled to operate at the second preset speed; when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, the electrostatic filtering 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 speed is less than the second preset speed.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

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

[0023] Figure 2 is a schematic structural diagram of a dust collecting filter element of an electrostatic filtering device according to an embodiment of the present invention;

[0024] Figure 3 is a schematic structural diagram of a dust collecting filter element installation slot of an electrostatic filtering device according to an embodiment of the present invention;

[0025] Figure 4 is a schematic structural diagram of a boost module of an electrostatic filtering device according to an embodiment of the present invention;

[0026] Figure 5 It is a structural schematic diagram of an installation slot for an electrostatic filter device at an air inlet of an air conditioner on-hook unit according to an embodiment of the present invention;

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

[0028] Figure 7 is a flow chart of a dust removal control method for an air conditioner according to an embodiment of the present invention;

[0029] Figure 8 is a flow chart of a dust removal control method for an air conditioner according to an embodiment of the present invention.

[0030] Reference numerals: air conditioner 1;

[0031] Refrigerant circulation loop 11; compressor 12; indoor fan 13; electrostatic filter device 14; dust collection device 15; particle sensor 16; controller 17. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

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

[0034] The compressor compresses the refrigerant gas in a high temperature and high pressure state 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 and high-pressure liquid refrigerant condensed in the condenser into a low-temperature and low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature and low-pressure refrigerant gas to the compressor. The evaporator can achieve a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0036] The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

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

[0038] Let's combine Figure 1-Figure 5 An electrostatic filter device for an air conditioner according to an embodiment of the present invention is described.

[0039] like Figure 1-Figure 5 As shown, the electrostatic filtering device of the embodiment of the present invention comprises: a dust collecting device, a dust collecting filter element and a boost module, wherein:

[0040] like Figure 1 FIG. 1 is a schematic diagram of the structure of the dust collecting device of the electrostatic filtration device of an embodiment of the present invention. The dust collecting device is a flat plate structure with all-metal hollowing, with multiple metal strips distributed in the middle, and multiple discharge tips distributed on both sides of the metal strips. The structure of the discharge tip can be a triangle, a cone, or other structure with a small curvature at the top, which is used to discharge to the air to form negative ions. When the fine particles, bacteria and viruses in the air meet the ions, charged particles are formed, and the bacteria and viruses are also inactivated by the ionized negative ions.

[0041] like Figure 2The figure shows a schematic diagram of the structure of a dust collecting filter element of an electrostatic filtering device according to an embodiment of the present invention. The dust collecting filter element is a grid-like structure, wherein high-potential plates and low-potential plates are distributed along the length direction of the filter element, wherein the high-potential plates are connected to the positive pole of the power supply, and the low-potential plates are connected to the negative pole of the power supply, and a high-voltage electric field is formed between the plates after power is applied, and when charged particles flow through the filter element, they are adsorbed on the charged plates under the action of the electric field force, and bacteria and viruses are inactivated in the high-voltage electric field and adsorbed on the surface of the electrode plates.

[0042] like Figure 3 The figure is a schematic diagram of the structure of the dust filter installation slot of the electrostatic filtering device of an embodiment of the present invention. The dust collecting device is provided with a plurality of assembly holes on the walls around it, and the assembly holes cooperate with the trapezoidal protrusions inside the dust filter installation base. After the assembly holes are fully matched, in order to prevent the dust collecting device from shaking left and right during transportation and installation, resulting in an unstable installation, it is necessary to inject epoxy resin into the installation gap to completely fix the metal charging module on the dust filter base.

[0043] like Figure 4 The figure shows a schematic diagram of the structure of the boost module of the electrostatic filtering device of one embodiment of the present invention. The input voltage of the boost module is 12V, which can be connected to the power output unit on the air-conditioning housing through contacts or power supply terminals; the 12V voltage is boosted to a high voltage through the boost circuit inside the boost module. To avoid the phenomenon of ultra-high voltage breaking through the plates, the preferred high voltage of the present invention is 3.5kV. If the operating environment of the electrostatic filtering device is relatively harsh, the voltage can be appropriately increased to 6kV to ensure the dust removal effect; wherein, the output end of the boost module is divided into three paths, one of which is connected to the dust collecting device to provide it with negative high voltage electricity; the other two paths are respectively connected to the supply electrode plates of the positive and negative plates of the dust collecting filter element, so that the alternating positive and negative plates are charged, forming a high voltage electric field inside. ; It should be noted that the electrode plate is wrapped inside the PP material with a thickness of 1mm, and the distance between the plates is greater than or equal to 4mm. According to the safety regulations for household and similar electrical appliances, when the rated pulse voltage is lower than 4kV, the minimum electrical gap is 3.0mm. In order to ensure the safety of the electrical appliances, the plate distance is set to 4mm in the present invention, which can prevent the occurrence of air breakdown and thus reduce the amount of ozone produced; a plurality of support belts are distributed between the positive and negative plates, and the support belts are also made of insulating PP material. The support belts and the positive and negative plates form a plurality of cavities, and the charged particles are adsorbed on the wall when flowing through the cavities. The presence of the support belts increases the dust collection area inside the dust filter element, further improving the dust collection capacity.

[0044] like Figure 5The figure shows a schematic diagram of the structure of the installation slot of the electrostatic filter device at the air inlet of the air conditioner wall unit according to an embodiment of the present invention. The fixing method of the electrostatic filter device at the air inlet is not limited to magnetic attraction, and can also be fixed by screws, buckles, etc.; when the dust collection of the electrostatic filter reaches a certain level and needs to be removed for cleaning, or the use time reaches a certain period, the dust removal handle can be manually buckled to remove the electrostatic filter device from the air inlet and wash it with water. The washing method is to soak it in clean water for 10 minutes, then rinse it with tap water for more than 3 minutes, and stop rinsing when the dust collection filter element is observed to be free of dust with the naked eye; after cleaning and drying, reassemble it back to its original position, and the dust removal and sterilization effects can be restored to the original state.

[0045] Reference below Figure 1-Figure 7 An air conditioner 1 according to an embodiment of the present invention will be described.

[0046] like Figure 6 As shown, the air conditioner 1 of the embodiment of the present invention comprises: a refrigerant circulation circuit 11, a compressor 12, an indoor fan 13, an electrostatic filter device 14, a dust collection device 15, a particle sensor 16 and a controller 17, wherein:

[0047] The refrigerant circulation loop 11 allows the refrigerant to circulate in the compressor 12, the condenser, the throttle valve and the evaporator in the circulation loop; the compressor 12 is used to compress the low-temperature and low-pressure refrigerant gas into a 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 absorb indoor pollutant particles; the particle 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 turn on ; Determine the operating mode of the air conditioner 1; Obtain the indoor pollutant particle concentration; 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 indoor pollutant particle concentration 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 the heating operation mode, the operating frequency of the compressor 12 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 collecting device 15, and / or the throttle valve is controlled to increase or decrease according to different preset openings, so as to adjust the corona current of the dust collecting device 15.

[0048] In the embodiment, the controller 17 controls the electrostatic filter device 14 to turn on, and the electrostatic filter device 14 charges the pollutant particles in the indoor air. Then, the charged pollutant particles move with the airflow to the vicinity of the dust collecting device 15. The dust collecting device 15 is distributed with a high-voltage electric field. The charged pollutant particles are acted upon by the electric field force and adsorbed to the inner surface of the dust collecting device 15. However, for pollutant particles of different diameters, there are also large differences in the charging process inside the dust collecting device 15. When the diameter of the pollutant particles is greater than 1.0 μm, electric field charging is dominant; when the diameter of the pollutant particles is less than 0.1 μm, diffusion charging is dominant; when the diameter of the pollutant particles is 0.1-1.0 μm, electric field charging and diffusion charging act together. Among them, electric field charging refers to the process in which ions collide with pollutant particles in the suspended air flow under the action of an external electric field, and adhere to the pollutant particles to charge them; diffusion charging is the process in which pollutant particles are charged due to irregular thermal motion and mutual collision between ions and pollutant particles, and this process does not require an external electric field; the charging speed depends on the type and concentration of ions, gas properties and temperature. When pollutant particles acquire charges, the self-generated electric field can reduce the charging speed. Even in the presence of an external electric field, for pollutant particles with a diameter less than 0.1μm, diffusion charging is still the main way to charge pollutant particles.

[0049] After the controller 17 controls the electrostatic filtering device 14 to turn on, it determines the operating mode of the air conditioner 1, which operating modes include, for example, a cooling operating mode and a heating operating mode; and obtains the indoor pollutant particle concentration according to the particle sensor 16, thereby determining the distribution of the pollutant particle concentration and the pollutant particle diameter in the indoor air.

[0050] After obtaining the above parameters, the controller 17 controls the operating state of the relevant components of the air conditioner 1 according to the different operating modes of the air conditioner 1 and the 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 the first preset speed or the second preset speed according to the indoor pollutant particle concentration and the 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. 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 stay in the electric field for a sufficient time, ensuring that indoor pollutant particles of different diameters can be effectively adsorbed on the dust collecting device 15, thereby improving the filtration efficiency, reducing the indoor pollutant particles due to the small diameter of the indoor pollutant particles and the high speed of the indoor fan 13, causing some fine particles such as 0.1μm-1μm in diameter to escape from the electrostatic filter device 14 and penetrate the window, 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 temperature, and the filtering effect on particulate matter is better. Therefore, the operating frequency of the compressor 12 is controlled to increase or decrease according to the indoor pollutant particle concentration and the preset concentration threshold value 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 openings to adjust the corona current of the dust collecting device 15. By adjusting the operating frequency of the compressor 12 and / or the throttle valve opening to control the temperature near the air inlet of the air conditioner 1, the corona current of the dust collecting device 15 is adjusted, thereby effectively improving the filtering effect on some fine particulate matter.

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

[0053] According to the air conditioner 1 of the embodiment of the present invention, after the electrostatic filter device 14 is controlled to be turned on, the operation mode and the indoor pollutant particle concentration are obtained, and the operation status of the relevant components of the air conditioner 1 is controlled accordingly. 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 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 of the throttle valve, it is ensured that indoor pollutant particles of different diameters can be fully charged, and the residence time of the indoor pollutant particles in the electrostatic filter device 14 is extended, thereby improving the filtering effect of the air conditioner 1 on indoor pollutant particles of different concentrations and diameters, thereby reducing the harm caused to the human body by fine indoor pollutant particles.

[0054] In some embodiments, the preset concentration thresholds include: a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold. When the indoor fan 13 is controlled to operate at a first preset speed or a second preset speed according to the indoor pollutant particle concentration and the preset concentration threshold, the controller 17 is configured as follows: 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 13 is controlled 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 operate at the second preset speed; when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, the electrostatic filtering device 14 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 speed is less than the second preset speed.

[0055] In an embodiment, the preset concentration thresholds include: a first preset concentration threshold, for example, C1, a second preset concentration threshold, for example, C2, and a third preset concentration threshold, for example, C3. The first preset concentration threshold C1 is greater than the second preset concentration threshold C2, and 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 determined 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 indoor pollutant particles with larger diameters account for a larger proportion, so the indoor fan 13 is controlled to switch from the initial speed to the first preset speed to speed up the circulation speed of the indoor air, thereby driving more indoor pollutant particles to flow through the electrostatic filter device 14, improving the filtration efficiency, and rapidly reducing the indoor pollutant particle concentration.

[0057] When the indoor pollutant particle concentration 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 larger diameters have been adsorbed on the electrostatic filter device 14, and most of the remaining ones are indoor pollutant particles with smaller diameters, that is, the proportion of indoor pollutant particles with larger diameters is small, and the proportion of indoor pollutant particles with smaller diameters is large. The air quality has been greatly improved compared with when the indoor fan 13 is just running. If the indoor fan 13 is controlled to maintain a high speed of the first preset speed, the indoor pollutant particles will stay in the electrostatic filter device 14 for a short time, and a large part of the indoor pollutant particles with a diameter of 0.1-1.0 μm will be adsorbed on the electrostatic filter device 14. Since the internal pollutant particles are not fully charged or not charged, they escape directly from the space inside the dust collecting device 15, and the filtering effect of the electrostatic filter device 14 will not be greatly improved. 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 larger diameters are fully charged when flowing through the electrostatic filter device 14. The indoor pollutant particles with smaller diameters have sufficient time to collide with each other and be charged due to the slow air flow rate. The charged small indoor pollutant particles are adsorbed on the dust collecting filter element under the action of the dust collecting diameter electric field.

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

[0059] In some embodiments, the preset concentration thresholds include: a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold. When the operating frequency of the compressor 12 is controlled to increase or decrease according to the indoor pollutant particle concentration and the preset concentration threshold, the controller 17 is configured as follows: 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 operating frequency of the compressor 12 is controlled to increase from the initial operating frequency to the first preset operating frequency; when the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, the operating frequency of the compressor 12 is controlled to decrease from the first preset operating frequency to the 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, the operating frequency of the compressor 12 is controlled to decrease, and the electrostatic filter device 14 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 operating frequency is less than the second operating frequency.

[0060] In an embodiment, the preset concentration thresholds include: a first preset concentration threshold, for example, C1, a second preset concentration threshold, for example, C2, and a third preset concentration threshold, for example, C3. The first preset concentration threshold C1 is greater than the second preset concentration threshold C2, and 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 .

[0061] 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, 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 indoor pollutant particles with larger diameters account for a larger proportion, so the operating frequency of the compressor 12 is controlled to increase from the initial operating frequency, for example, recorded as f0, to the first preset operating frequency, for example, recorded as 1.2f0, to increase the heating capacity of the heat exchanger. Moreover, since 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 collecting device 15 in the electrostatic filter device 14 will also increase accordingly. Therefore, the corona current on the surface of the dust collecting device 15 increases, thereby enhancing the purification efficiency of the indoor pollutant particles.

[0062] When the indoor pollutant particle concentration 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 larger diameters have been adsorbed on the electrostatic filter device 14, and most of the remaining particles are indoor pollutant particles with smaller diameters, that is, the proportion of indoor pollutant particles with larger diameters is small, and the proportion of indoor pollutant particles with smaller diameters is large. The air quality has been greatly improved compared to when the indoor fan 13 is just running. If the compressor 12 is controlled to maintain a higher first preset operating frequency of 1.2f0, 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 0.1-1.0μm directly escape from the space inside the dust collecting device 15 due to insufficient or no charge, and the filtering effect of the electrostatic filter device 14 will not be greatly improved. Then, the operating frequency of the compressor 12 is controlled to be reduced from the first preset operating frequency 1.2f0 to the second preset operating frequency, for example, recorded as 1.1f0, which can appropriately reduce the energy consumption of the air conditioner 1 and also reduce the operating noise of the air conditioner 1.

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

[0064] In some embodiments, the preset concentration thresholds include: a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold. When the throttle valve is controlled to increase or decrease according to different preset openings, the controller 17 is configured as follows: 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 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, the throttle valve is controlled to increase from the initial opening according to the second preset opening threshold until the opening of the throttle valve reaches the first opening; when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, the throttle valve is controlled to be adjusted to the initial opening, and the electrostatic filter device 14 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.

[0065] In an embodiment, the preset concentration thresholds include: a first preset concentration threshold, for example, C1, a second preset concentration threshold, for example, C2, and a third preset concentration threshold, for example, C3. The first preset concentration threshold C1 is greater than the second preset concentration threshold C2, and 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 .

[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, 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 indoor pollutant particles with larger diameters account for a larger proportion, and 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 20% opening. If it does not reach the first opening, i.e., the maximum opening, after the increase, it continues to increase according to 20% opening until the opening of the throttle valve reaches the first opening, i.e., the maximum opening.

[0067] When the indoor pollutant particle concentration is between the second preset concentration threshold value C2 and the third preset concentration threshold value C3, it is considered that the indoor pollutant particles with larger diameters have been mostly adsorbed on the electrostatic filter device 14, and the remaining majority are indoor pollutant particles with smaller diameters, that is, the proportion of indoor pollutant particles with larger diameters is small, and the proportion of indoor pollutant particles with smaller diameters is large. The air quality has been greatly improved compared to when the indoor fan 13 is just running. If the throttle valve is controlled to maintain a higher first preset opening threshold value, the residence time of indoor pollutant particles in the electrostatic filter device 14 is shorter. , a large part of the indoor pollutant particles with a diameter of 0.1-1.0μm directly escape from the space inside the dust collecting device 15 due to insufficient charging or no charging, and the filtering effect of the electrostatic filtering device 14 will not be greatly improved, then the throttle valve is controlled to increase from the initial opening according to the second 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 10% opening. If it does not reach the first opening, i.e., the maximum opening, after the increase, it continues to increase according to 10% opening until the opening of the throttle valve reaches the first opening, i.e., the maximum opening.

[0068] When the indoor pollutant particle concentration does not exceed the third preset concentration threshold C3, it is considered that the indoor control quality is good at this time, so the throttle valve is controlled to be 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 controlling the electrostatic filter device 14 to be turned off, the controller 17 is further configured to: control the indoor fan 13 to switch to an initial speed.

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

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

[0072] In the embodiment, when the air conditioner 1 is in the heating operation mode and the indoor pollutant particle concentration does not exceed the third preset concentration threshold C3, it is considered that the indoor control quality at this time is good, so the electrostatic filter device 14 is controlled to be turned off. After the electrostatic filter device 14 is turned off, 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 needs of users.

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

[0074] In the embodiment, the particulate matter sensor 16 always keeps detecting the indoor pollutant particle concentration. After controlling the electrostatic filtering device 14 to turn off, the controller 17 obtains the indoor pollutant particle concentration again. When the indoor pollutant particle concentration exceeds the second preset concentration threshold C2 again, it is considered that the indoor control quality at this time is poor, and the electrostatic filtering device 14 is controlled to turn on again to filter the indoor pollutant particles.

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

[0076] In the embodiment, the particle sensor 16 always keeps detecting the indoor pollutant particle concentration, and the controller 17 obtains the indoor pollutant particle concentration at a preset time interval to obtain more accurate data.

[0077] Reference below Figure 7 The dust removal control method of the air conditioner according to the embodiment of the present invention is described by way of example.

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

[0079] Step S11, controlling the electrostatic precipitator to start.

[0080] Step S12, determining the operation mode of the air conditioner.

[0081] Step S13, obtaining the indoor pollutant particle concentration at a preset time interval.

[0082] Step S14, determining whether the air conditioner is in cooling operation mode, if so, executing step S15; otherwise, executing steps S21 and S26.

[0083] Step S15, determining whether the indoor pollutant particle concentration exceeds a second preset concentration threshold, if so, executing step S16; otherwise, executing step S17.

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

[0085] Step S17, determining whether the indoor pollutant particle concentration exceeds a third preset concentration threshold, if so, executing step S18; otherwise, executing step S19.

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

[0087] Step S19, controlling the electrostatic dust removal device to close.

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

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

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

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

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

[0093] Step S25, controlling the compressor operating frequency to decrease, and controlling the electrostatic dust removal device to shut down.

[0094] Step S26, determining whether the indoor pollutant particle concentration exceeds a second preset concentration threshold, if so, executing step S27; otherwise, executing step S28.

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

[0096] Step S28, determining whether the indoor pollutant particle concentration exceeds a third preset concentration threshold, if so, executing step S29; otherwise, executing step S30.

[0097] Step S29, controlling 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, controlling the throttle valve to adjust to an initial opening, and controlling the electrostatic precipitator to close.

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

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

[0101] Step S33, determining whether the indoor pollutant particle concentration exceeds a second preset concentration threshold, if so, executing step S34; otherwise, executing step S32.

[0102] Step S34, controlling the electrostatic precipitator to start again.

[0103] According to the air conditioner 1 of the embodiment of the present invention, after the electrostatic filter device 14 is controlled to be turned on, the operation mode and the indoor pollutant particle concentration are obtained, and the operation status of the relevant components of the air conditioner 1 is controlled accordingly. 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 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 of the throttle valve, it is ensured that indoor pollutant particles of different diameters can be fully charged, and the residence time of the indoor pollutant particles in the electrostatic filter device 14 is extended, thereby improving the filtering effect of the air conditioner 1 on indoor pollutant particles of different concentrations and diameters, thereby reducing the harm caused to the human body by fine indoor pollutant particles.

[0104] Combine the following Figure 8 A dust removal control method for an air conditioner according to an embodiment of the present invention is described.

[0105] like Figure 8 As shown, the dust removal control method for an air conditioner according to an embodiment of the present invention at least includes steps S1 to S5.

[0106] Step S1, controlling the electrostatic filtering device to start.

[0107] In an embodiment, a controller controls the electrostatic filtering device to turn on, and the electrostatic filtering device charges the pollutant particles in the indoor air. Subsequently, the charged pollutant particles move with the airflow to the vicinity of the dust collecting device. The dust collecting device is distributed with a high-voltage electric field, and the charged pollutant particles are adsorbed to the inner surface of the dust collecting device by the electric field force; however, for pollutant particles of different diameters, there are also large differences in the charging process inside the dust collecting device. When the diameter of the pollutant particles is greater than 1.0 μm, electric field charging is dominant; when the diameter of the pollutant particles is less than 0.1 μm, diffusion charging is dominant; when the diameter of the pollutant particles is 0.1-1.0 μm, electric field charging and diffusion charging act together. Among them, electric field charging refers to the process in which ions collide with pollutant particles in the suspended air flow under the action of an external electric field, and adhere to the pollutant particles to charge them; diffusion charging is the process in which pollutant particles are charged due to irregular thermal motion and mutual collision between ions and pollutant particles, and this process does not require an external electric field; the charging speed depends on the type and concentration of ions, gas properties and temperature. When the pollutant particles acquire charges, the self-generated electric field can reduce the charging speed. Even in the presence of an external electric field, for pollutant particles with a diameter less than 0.1μm, diffusion charging is still the main way to charge pollutant particles.

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

[0109] In an embodiment, after the controller controls the electrostatic filter device to turn on, the operation mode of the air conditioner is determined, and the operation mode includes, for example, a cooling operation mode and a heating operation mode.

[0110] Step S3, obtaining indoor pollutant particle concentration.

[0111] In an embodiment, the controller obtains the indoor pollutant particle concentration according to the particle sensor, thereby determining the distribution of the pollutant particle concentration and particle diameter in the indoor air.

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

[0113] In an embodiment, the controller controls the operating state of the relevant parts of the air conditioner according to different operating modes of the air conditioner and different indoor air quality states. 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 indoor pollutant particle concentration and the 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. 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, ensuring that indoor pollutant particles of different diameters can be effectively adsorbed on the dust collection device, thereby improving the filtration efficiency, reducing the escape of some fine particles such as 0.1μm-1μm diameter indoor pollutant particles 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] Step S5, when the air conditioner is in the heating operation mode, the compressor operating 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, and / or the throttle valve is controlled to increase or decrease according to different preset openings to adjust the corona current of the dust collecting device.

[0115] In an embodiment, when the air conditioner is in a heating operation mode, the compressor operating frequency is controlled to increase or decrease according to the indoor pollutant particle concentration and a preset concentration threshold value to adjust the corona current of the dust collecting device, and / or the throttle valve is controlled to increase or decrease according to different preset openings to adjust the corona current of the dust collecting device. By adjusting the compressor operating frequency to control the temperature near the air inlet of the air conditioner, and then adjusting the corona current of the dust collecting column, it can be understood that the greater the corona current on the dust collecting device, the better the dust collecting effect, thereby effectively improving the filtering effect of some fine particles.

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

[0117] In some embodiments, the preset concentration thresholds include: 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 speed or a second preset 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 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 is controlled to operate at the second preset speed; when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, the electrostatic filtration 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 speed is less than the second preset speed.

[0118] In some embodiments, the preset concentration thresholds include: a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold. When the operating frequency of the compressor 12 is controlled to increase or decrease according to the indoor pollutant particle concentration and the preset concentration threshold, it 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 compressor operating frequency is controlled to increase from the initial operating frequency to the first preset operating frequency; when the indoor pollutant particle concentration is between the second preset concentration threshold and the third preset concentration threshold, the compressor operating frequency is controlled to decrease from the first preset operating frequency to the 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, the compressor operating frequency is controlled to decrease, and the electrostatic 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 operating frequency is less than the second operating frequency.

[0119] In some embodiments, 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 openings, it 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 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, the throttle valve is controlled to increase from the initial opening according to the second preset opening threshold until the opening of the throttle valve reaches the first opening; when the indoor pollutant particle concentration does not exceed the third preset concentration threshold, the throttle valve is controlled to be adjusted to the initial opening, and the electrostatic filtration 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 controlling the electrostatic filtering device to shut down, the method includes: controlling the indoor fan to switch to an initial speed.

[0121] In some embodiments, after controlling the electrostatic filter device to be turned off, the method includes: controlling the operating frequency of the compressor to switch to the initial operating frequency.

[0122] In some embodiments, after controlling the electrostatic filtering device to be turned off, the method includes: obtaining the indoor pollutant particle concentration again; and controlling the electrostatic filtering device to be turned on again when the indoor pollutant particle concentration exceeds a second preset concentration threshold.

[0123] In some embodiments, obtaining the indoor pollutant particle concentration includes: obtaining the indoor pollutant particle concentration at preset time intervals.

[0124] According to the dust removal control method of the air conditioner according to the embodiment of the present invention, after the electrostatic filtering device is turned on, the operation mode and the indoor pollutant particle concentration are obtained, and the operation status of the relevant components of the air conditioner are controlled accordingly. When the air conditioner is in the cooling operation mode, the operating speed of the indoor fan is adjusted; when the air conditioner is in the heating operation mode, the operating frequency of the compressor and / or the opening of the throttle valve are adjusted to adjust the corona current of the dust collecting device. By cooperatively controlling the operating speed of the indoor fan, the operating frequency of the compressor and / or the opening of the throttle valve, it is ensured that indoor pollutant particles of different diameters can be fully charged, and the residence time of the indoor pollutant particles in the electrostatic filtering device is extended, thereby improving the filtering effect on indoor pollutant particles of different concentrations and diameters, thereby reducing the harm caused to the human body by fine indoor pollutant particles.

[0125] In the description of this specification, 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.

[0126] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that: include: A refrigerant circulation loop, wherein the refrigerant circulates through the compressor, condenser, throttle valve and evaporator in a circulation loop; The compressor is used to compress the low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharge it to the condenser; Indoor fan, used to drive indoor air to exchange heat with indoor heat exchanger and then send it out from the air outlet; An electrostatic filtering device, arranged at the air inlet of the air conditioner, for filtering indoor pollutant particles; A dust collecting device, arranged in the electrostatic filtering device, for absorbing the indoor pollutant particles; Particle sensor, used to detect indoor pollutant particle concentration; The controller is configured to: control the electrostatic filtering device to start; Determine the operating mode of the air conditioner; Obtain indoor pollutant particle concentration; When the air conditioner is in a cooling operation mode, the indoor fan is controlled to operate at a first preset speed or a second preset speed according to the indoor pollutant particle concentration and a preset concentration threshold, so that the indoor pollutant particles flow through the electrostatic filtering device, wherein the first preset speed is greater than the second preset speed; When the air conditioner is in a heating operation mode, the compressor operation frequency is controlled to increase or decrease according to the indoor pollutant particle concentration and a preset concentration threshold value, so as to adjust the corona current of the dust collecting device, and / or The throttle valve is controlled to increase or decrease according to different preset openings to adjust the corona current of the dust collecting device.

2. The air conditioner according to claim 1, characterized in that: The preset concentration thresholds include: a first preset concentration threshold, a second preset concentration threshold, and a third preset concentration threshold. When the indoor fan is controlled to run at the first preset speed or the second preset speed according to the indoor pollutant particle concentration and the preset concentration thresholds, the controller is configured as follows: 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; When the indoor pollutant particle concentration does not exceed the third preset concentration threshold, the electrostatic filtering 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 rotation speed is less than the second preset rotation speed.

3. The air conditioner according to claim 1, characterized in that: The preset concentration thresholds include: a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold. When the compressor operation frequency is increased or decreased according to the indoor pollutant particle concentration and the preset concentration thresholds, the controller is configured as follows: 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 compressor operating frequency to increase from the initial operating frequency to the first preset operating 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 the 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, the compressor operating frequency is controlled to decrease, and the electrostatic filtering 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 operating frequency is less than the second operating frequency.

4. The air conditioner according to claim 1, characterized in that: The preset concentration thresholds include: a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold. When controlling the throttle valve to increase or decrease according to different preset openings, the controller is configured as follows: 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 according to the 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, controlling 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; 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 filtering 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.

5. The air conditioner according to claim 2, characterized in that: After controlling the electrostatic filter device to be turned off, the controller is further configured to: The indoor fan is controlled to switch to the initial speed.

6. The air conditioner according to claim 3, characterized in that: After controlling the electrostatic filter device to be turned off, the controller is further configured to: The operating frequency of the compressor is controlled to switch to the initial operating frequency.

7. The air conditioner according to any one of claims 2 to 4, characterized in that: After controlling the electrostatic filter device to be turned off, the controller is further configured to: Obtaining the indoor pollutant particle concentration again; When the indoor pollutant particle concentration exceeds the second preset concentration threshold, the electrostatic filtering device is controlled to be turned on again.

8. The air conditioner according to claim 1, characterized in that: When obtaining the indoor pollutant particle concentration, the controller is further configured to: The indoor pollutant particle concentration is obtained at preset time intervals.

9. A dust removal control method for an air conditioner, characterized in that: include: Control the electrostatic filter device to start; Determine the operating mode of the air conditioner; Obtain indoor pollutant particle concentration; When the air conditioner is in a cooling operation mode, the indoor fan is controlled to operate at a first preset speed or a second preset speed according to the indoor pollutant particle concentration and a preset concentration threshold, so that the indoor pollutant particles flow through the electrostatic filtering device, wherein the first preset speed is greater than the second preset speed; 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 value, 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 openings to adjust the corona current of the dust collecting device.

10. The dust removal control method for an air conditioner according to claim 9, characterized in that: The preset concentration threshold includes: a first preset concentration threshold, a second preset concentration threshold and a third preset concentration threshold, and controlling the indoor fan to run 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; When the indoor pollutant particle concentration does not exceed the third preset concentration threshold, the electrostatic filtering 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 rotation speed is less than the second preset rotation speed.

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