Air treatment equipment, air purification device and control method

Abstract

The invention discloses air treatment equipment, an air purification device and a control method. The air purification device comprises a shell, and an air flow channel is formed in the shell; the charging assembly is arranged in the air flow channel and comprises a plurality of charging modules which are sequentially arranged along the air flow channel, and the charging modules are configured to ionize air so that particulate matter in the air can be electrified; and the electrostatic dust collection module is arranged in the air flow channel, is positioned at the downstream of the charged component, and is configured to apply an electrostatic field to adsorb charged particles. The air purification device does not need consumables, is small in air resistance, and can be suitable for scenes with large air volume and high dust concentration.

Description

Technical Field

[0001] The present invention relates to air purification technology, and more particularly to an air treatment device, an air purification device and a control method. Background Art

[0002] As people's requirements for quality of life become higher and higher, people use fresh air filters to improve indoor air quality. Fresh air filters can filter out tiny particles such as dust, pollen, bacteria, and viruses in the air, thereby reducing the concentration of pollutants in the indoor air and allowing people to breathe fresher and healthier air. In addition, fresh air filters can also effectively prevent excessive indoor carbon dioxide concentrations, thereby improving people's work and study efficiency.

[0003] At present, the fresh air filtration technology mainly adopts HEPA (High efficiency particulate air Filter) filtration technology and glass fiber filters, among which HEPA filters are generally used for civilian use, and glass fiber filters are generally used in industrial dust-free workshops.

[0004] However, HEPA fresh air filtration technology has the following shortcomings:

[0005] 1) Replace consumables: After long-term use, the HEPA filter will be clogged due to dust accumulation on the surface. If it is not replaced for a long time, bacteria will grow on the surface of the material, and the air blown out will also produce odor. HEPA filters cannot be washed and regenerated, so HEPA filters need to be replaced regularly. Due to the limited space of the air conditioner's hanging unit (indoor unit), the size of the fresh air filter HEPA net is often relatively small and the dust holding capacity is low, so the replacement cycle of the hanging unit's fresh air HEPA is shorter.

[0006] 2) High resistance and low air volume: Since the HEPA net is made of melt-blown fibers, the fiber gap is small and the air resistance is high. Therefore, when using the HEPA net for filtration, the air resistance increases sharply and the fresh air volume decreases sharply, seriously affecting the user experience. Summary of the invention

[0007] The present application proposes an air purification device, which comprises:

[0008] A shell body having an air flow channel therein;

[0009] a charging assembly, disposed in the airflow channel, comprising a plurality of charging modules sequentially arranged along the airflow channel, wherein the charging modules are configured to ionize the air so as to charge particles in the air; and

[0010] The electrostatic dust collection module is arranged in the air flow channel and downstream of the charging component, and is configured to apply an electrostatic field to adsorb charged particles.

[0011] In an exemplary embodiment, it also includes a control module electrically connected to the charging component and the electrostatic dust collection module; the control module is configured as follows:

[0012] Obtain the mass of the particles to be collected in the current unit time input into the airflow channel;

[0013] Determine the number of charging modules to be opened according to the mass of the to-be-collected particulate matter input into the airflow channel in the current unit time, wherein the number of charging modules to be opened tends to increase with the increase of the mass of the to-be-collected particulate matter;

[0014] Control the operation of the charging modules and electrostatic dust collection modules of the opened number.

[0015] In an illustrative embodiment, the step of determining the number of charging modules turned on includes:

[0016] Determine the value interval to which the mass of the particulate matter to be collected in the input airflow channel in the current unit time belongs, and obtain the opening quantity corresponding to the value interval;

[0017] The value range of the mass of the to-be-collected particulate matter input into the airflow channel per unit time is divided into a plurality of non-overlapping value intervals, and a value interval with a larger value corresponds to a larger number of charging modules that are turned on.

[0018] In an illustrative embodiment, the difference between the numbers of enabled charging modules corresponding to two adjacent value intervals is 1.

[0019] In an illustrative embodiment, the control of the operation of the charging module and the electrostatic dust collection module of the opened number includes:

[0020] Adding the charging module that is farthest from the electrostatic dust collection module and is not in the set to be operated to the set to be operated until the number of charging modules in the set to be operated reaches the start-up number;

[0021] Controls the operation of the charging modules included in the set to be run.

[0022] In an illustrative embodiment, it also includes:

[0023] A fan, used to drive air to flow through the charging component and the electrostatic dust collection module in sequence; and

[0024] A dust sensor, electrically connected to the control module, for measuring the dust concentration of the air input into the air flow channel;

[0025] The control module is also configured as:

[0026] Obtain the current dust concentration and the current speed of the fan, and determine the mass of particulate matter to be collected in the input airflow flow channel within the current unit time based on the current dust concentration, the current speed, the fan's designed maximum speed, the air volume at the fan's designed maximum speed, and the slope constant of the curve between the fan's air volume and speed.

[0027] In an illustrative embodiment, the charging module includes a first electrode, a second electrode spaced apart from the first electrode, and an insulating bracket connecting the first electrode and the second electrode;

[0028] A voltage difference is applied between the first electrode and the second electrode to generate plasma.

[0029] In an exemplary embodiment, the second electrode is cylindrical, and the outer peripheral wall of the second electrode abuts against the inner peripheral wall of the air flow channel;

[0030] The first electrode is disposed inside the second electrode and is configured as a straight bar coaxial with the second electrode, and one end of the first electrode is configured as a discharge tip.

[0031] In an illustrative embodiment, the discharge tip faces an end of the second electrode that enters the wind.

[0032] In an illustrative embodiment, both ends of the first electrode are configured as discharge tips, and the two discharge tips are respectively directed toward an air inlet end and an air outlet end of the second electrode.

[0033] In an illustrative embodiment, two first electrodes are provided, and discharge tips of the two first electrodes are respectively located at opposite ends of the two first electrodes and respectively face the air inlet end and the air outlet end of the second electrode.

[0034] In an illustrative embodiment, the voltage applied to the first electrode ranges from -1 kV to -20 kV, and the second electrode is grounded.

[0035] The present application also proposes a control method for an air purification device, characterized in that the control method is implemented based on the above-mentioned air purification device, and the control method includes:

[0036] Determine the number of charging modules to be turned on according to the mass of the particles to be collected in the air flow channel within the current unit time;

[0037] Control the operation of the charging modules and electrostatic dust collection modules of the opened number.

[0038] The present application also proposes an air treatment device, which includes the air purification device as described above.

[0039] In the technical solution of the present application, when the air in the airflow channel flows through the charging module, the particulate matter in the air adsorbs the charged particles generated by the charging module and becomes charged. When passing through the electrostatic dust collecting module, the charged particulate matter is adsorbed by the electrostatic dust collecting module and collected together, thereby removing the particulate matter in the air and achieving the effect of purifying the air. At the same time, the charged particles generated by the charging module can also play a role in sterilization. The adsorbed particulate pollutants on the electrostatic dust collecting module can be washed with water, and the electrostatic dust collecting module can be reused after washing. This air purification device has no wearing parts and does not require consumables for long-term operation. At the same time, the charging module and the electrostatic dust collecting module have little obstruction to the airflow and can be suitable for scenes with large air volume and high dust concentration.

[0040] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained by the schemes described in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings are used to provide an understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0042] Figure 1 A schematic front view of an air purification device according to an embodiment of the present application;

[0043] Figure 2 A three-dimensional schematic diagram of an air purification device according to an embodiment of the present application;

[0044] Figure 3 A full cross-sectional schematic diagram of an air purification device according to an embodiment of the present application;

[0045] Figure 4 A simplified schematic diagram of an air purification device according to an embodiment of the present application;

[0046] Figure 5 This is a flow chart of a control method for an air purification device according to an embodiment of the present application;

[0047] Figure 6 A schematic diagram of a charging module according to an embodiment of the present application;

[0048] Figure 7 A schematic diagram of another charging module according to an embodiment of the present application;

[0049] Figure 8 FIG. 4 is a schematic diagram of another charging module according to an embodiment of the present application.

[0050] Reference numerals:

[0051] 100. Air purification device; 1. Charging component; 11. Charging module; 11a. First charging module; 11b. Second charging module; 11c. Third charging module; 11d. Fourth charging module; 111. First electrode; 1111. Discharge tip; 112. Second electrode; 113. Insulating bracket; 1131. Sub-bracket; 2. Electrostatic dust collection module; 3. Shell; 31. Air flow channel; 32. Air inlet; 33. Air outlet; 4. Fan. DETAILED DESCRIPTION

[0052] This embodiment proposes an air treatment device, which can take in and out air, and has unlimited air treatment functions, for example, it can perform at least one of the following treatment functions: temperature adjustment, humidification, purification, circulation, etc. The air treatment device includes but is not limited to an air conditioner, and the air treatment device can also be a purifier, a humidifier, a fan, etc. After the specific type of the air treatment device is determined, those skilled in the art can know the composition of the air treatment device to realize the air treatment function, which will not be described in detail here.

[0053] The air handling equipment includes a casing, an air supply fan and an air purification device. The casing is provided with an air inlet, an air outlet and an air duct. The two ends of the air duct are respectively connected to the air inlet and the air outlet. The air supply fan is arranged in the air duct. The air supply fan can be a cross-flow fan or a centrifugal fan. After the air supply fan is started, it can drive the air in the air duct to move from the air inlet to the air outlet, so that the air inlet sucks the air in the surrounding environment into the air duct, and the air is discharged from the air outlet to the surrounding environment after flowing through the air duct. The air outlet can be openable and closable, for example, a movable damper or air guide plate can be provided at the air outlet to open or close the air outlet. The air purification device is arranged on the casing.

[0054] like Figures 1 to 3 As shown, Figures 1 to 3 The structure of an air purification device 100 in this embodiment is shown. The air purification device 100 includes a housing 3, a charging component 1 and an electrostatic dust collection module 2.

[0055] The shell 3 can be made of insulating material, such as plastic. The shell 3 is provided with an air flow channel 31, an air inlet 32 ​​and an air outlet 33. The air inlet 32 ​​and the air outlet 33 are respectively arranged at opposite ends of the air flow channel 31. The air inlet 32 ​​is used to input the air to be purified into the air flow channel 31. The air inlet 32 ​​can be connected to the outdoors. The air is input from the air inlet 32, and is output from the air outlet 33 after flowing through the air flow channel 31. The air outlet 33 of the shell 3 can be an air inlet, an air outlet or an air duct connected to the air treatment device. The air outlet 33 of the shell 3 can also be arranged outside the casing of the air treatment device.

[0056] like Figure 4As shown, the charging component 1 is arranged in the air flow channel 31. The charging component 1 can be arranged near the air inlet 32. The charging component 1 includes a plurality of charging modules 11. The number of the charging modules 11 is greater than or equal to 2, for example, it can be 2, 3, 4 or 5. The plurality of charging modules 11 are arranged in sequence along the extension direction of the air flow channel 31. The charging module 11 can be a plasma generator, which can ionize the air to generate plasma. The charging module 11 can be a negative ion generator, which can ionize the air to generate negative ions.

[0057] When the charging module 11 ionizes the air, it can generate charged particles such as positive ions and negative ions in the air. These charged particles diffuse into the particles in the air and can be adsorbed by the particles, making the particles carry static charges. The particles in the air include fine particles, bacteria, pollen, floating dust, etc. Fine particles refer to particles in the air with an aerodynamic equivalent diameter of less than or equal to 2.5 microns. The particles can be positively charged by adsorbing positive ions, or negatively charged by adsorbing negative ions. Microorganisms such as bacteria can be killed by charged particles.

[0058] The electrostatic dust collecting module 2 is arranged in the air flow channel 31, and the electrostatic dust collecting module 2 is located downstream of the charging component 1. The electrostatic dust collecting module 2 is closer to the air outlet 33 than the charging component 1. The electrostatic dust collecting module 2 is provided with gaps or meshes for air flow to pass through. The electrostatic dust collecting module 2 can apply an electrostatic field, and the charged particles are adsorbed by the electrostatic dust collecting module 2 under the action of the electrostatic field. The electrostatic dust collecting module 2 includes an anode and a cathode. The anode is electrically connected to the positive pole of a DC power supply, and the cathode is electrically connected to the negative pole of the DC power supply. An electrostatic field is generated between the anode and the cathode. When the charged particles pass through the electrostatic field, the positively charged particles move toward the cathode under the action of the electrostatic field and are adsorbed on the cathode, and the negatively charged particles move toward the anode under the action of the electrostatic field and are adsorbed on the anode. The electrostatic dust collecting module 2 can be an electrostatic dust collecting net.

[0059] Thus, when the air in the airflow channel 31 flows through the charging module 11, the particles in the air are charged by adsorbing the charged particles generated by the charging module 11, and when passing through the electrostatic dust collection module 2, the charged particles are adsorbed by the electrostatic dust collection module 2 and collected together, thereby removing the particles in the air and achieving the effect of purifying the air. At the same time, the charged particles generated by the charging module 11 can also play a role in sterilization. The adsorbed particle pollutants on the electrostatic dust collection module 2 can be washed with water, and the electrostatic dust collection module 2 can be reused after washing.

[0060] In an illustrative embodiment, the air purification device 100 further includes a control module and a power module (not shown in the figure). A boost circuit may be provided in the power module. The power module is electrically connected to all charging modules 11 to provide high voltage for all charging modules 11. In some embodiments, the power module includes a plurality of sub-power modules, and the sub-power modules are arranged in a one-to-one correspondence with the charging modules 11, each sub-power module is electrically connected to the charging module 11 corresponding thereto, and each sub-power module independently supplies power to the charging module 11 corresponding thereto. In other embodiments, the power module is provided with a plurality of power supply interfaces, and the power supply interfaces are arranged in a one-to-one correspondence with the charging modules 11, each power supply interface is electrically connected to the charging module 11 corresponding thereto, and each power supply interface supplies power to the charging module 11 corresponding thereto.

[0061] The control module is a logic control unit of the air purification device 100. The control module is electrically connected to the power module. The control module is configured to control the power on and off of each charging module 11. The control module can control the power on and off of the charging module 11 by controlling the closing and opening of the switch device on the power supply line between the charging module 11 and the power module. The control module can also control the power on and off of the charging module 11 corresponding to the sub-power module by turning on and off the sub-power module.

[0062] The power supply module is also electrically connected to the electrostatic dust collecting module 2 to provide power to the electrostatic dust collecting module 2. The control module can also control the on and off of the electrostatic dust collecting module 2.

[0063] In this embodiment, if Figure 5 As shown, a control method of the air purification device 100 is also proposed, and the control method includes:

[0064] Step S1: The control module obtains the mass of the particles to be collected that enter the air flow channel 31 within the current unit time;

[0065] The control module can determine the mass of the particles to be collected in the input airflow channel 31 per unit time according to the dust concentration in the air and the air volume of the input airflow channel 31. The greater the dust concentration, the greater the air volume of the input airflow channel 31, and the greater the mass of the particles to be collected in the input airflow channel 31 per unit time.

[0066] Step S2: the control module determines the number of charging modules 11 to be opened according to the mass of the to-be-collected particulate matter input into the airflow channel 31 in the current unit time, and the number of charging modules 11 to be opened tends to increase with the increase of the mass of the to-be-collected particulate matter;

[0067] There is a corresponding relationship between the number of charging modules 11 that are opened and the mass of the particulate matter to be collected that is input into the airflow channel 31 per unit time. A larger number of charging modules 11 that are opened corresponds to a larger mass of the particulate matter to be collected that is input into the airflow channel 31 per unit time. The number of charging modules 11 that are opened tends to increase with the increase in the mass of the particulate matter to be collected that is input into the airflow channel 31 per unit time.

[0068] The control module can be determined based on the mass of the to-be-collected particles input into the airflow channel 31 in the current unit time and the corresponding relationship between the number of openings of the charging module 11 and the mass of the to-be-collected particles input into the airflow channel 31 in the unit time. The greater the mass of the to-be-collected particles input into the airflow channel 31 in the unit time, the greater the number of openings of the charging module 11 determined by the control module; the smaller the mass of the to-be-collected particles input into the airflow channel 31 in the unit time, the smaller the number of openings of the charging module 11 determined by the control module.

[0069] Step S3: The control module controls the number of charging modules 11 and electrostatic dust collection modules 2 to operate, and then enters step S1.

[0070] The control module connects the charging module 11 to the power module to drive the charging module 11 to operate. The control module connects the electrostatic dust collection module 2 to the power module to drive the electrostatic dust collection module 2 to operate. The greater the mass of the particulate matter to be collected input into the airflow channel 31 per unit time, the more charged particles are required, and the control module turns on more charging modules 11 to charge the particulate matter. The higher the rate of charged particles generated by the charging component, the more particulate matter can adsorb charged particles and be charged, thereby improving the purification efficiency. The smaller the mass of the particulate matter to be collected input into the airflow channel 31 per unit time, the fewer charged particles are required, and the control module turns on fewer charging modules 11 to charge the particulate matter, which can not only ensure the purification efficiency, but also avoid the excessive ozone generated when the charging module 11 ionizes the air, saving electricity.

[0071] In an illustrative embodiment, step S2 includes step S21 and step S22.

[0072] Step S21: The control module determines the value interval to which the mass of the to-be-collected particulate matter input into the airflow channel 31 in the current unit time belongs, and proceeds to step S22;

[0073] The value range of the mass of the particulate matter to be collected in the airflow channel 31 per unit time is divided into multiple value intervals, and the multiple value intervals do not overlap each other. Each value interval corresponds to a dust pollution degree, and the larger the element value in the value interval, the higher the dust pollution degree.

[0074] In this embodiment, the value range of the mass of the particulate matter to be collected input into the air flow channel 31 per unit time is divided into four value intervals, namely, value interval M0, value interval M1, value interval M2 and value interval M3. Value interval M0 is less than or equal to 250 μg / h, value interval M1 is greater than 250 μg / h and less than or equal to 500 μg / h, value interval M2 is greater than 500 μg / h and less than or equal to 1000 μg / h, and value interval M3 is greater than 1000 μg / h.

[0075] The control module can match the mass of the to-be-collected particles input into the airflow channel 31 in the current unit time with each value interval, and can determine the value interval to which the mass of the to-be-collected particles input into the airflow channel 31 in the current unit time belongs.

[0076] Step S22: The control module obtains the opening quantity corresponding to the value interval and enters step S3.

[0077] Each value interval corresponds to the number of charging modules 11 that are turned on. A value interval with a larger value corresponds to a larger number of charging modules 11 that are turned on.

[0078] In this embodiment, the number of charging modules 11 turned on corresponding to the value interval M0, the value interval M1, the value interval M2 and the value interval M3 are a0, a1, a2, a3 respectively, a0<a1<a2<a3, a0 is greater than or equal to 1, and a3 is less than or equal to the total number of charging modules 11. In this embodiment, a0 is equal to 1, a1 is equal to 2, a2 ​​is equal to 3, and a3 is equal to 4.

[0079] After determining the value interval to which the mass of the to-be-collected particulate matter input into the airflow channel 31 in the current unit time belongs, the control module obtains the number of opened charging modules 11 corresponding to the value interval.

[0080] In an illustrative embodiment, the number of value intervals is the same as the number of charging modules 11 in the charging assembly 1. The difference between the numbers of enabled charging modules 11 corresponding to two adjacent value intervals is 1.

[0081] In this way, when the mass of the to-be-collected particulate matter input into the airflow channel 31 in the current unit time changes from one value interval to another adjacent value interval, the opening number of the charging module 11 increases or decreases by 1, and the control module can adjust the opening number more precisely.

[0082] In an illustrative embodiment, step S3 includes steps S31 to S33.

[0083] Step S31: the control module adds the charging module 11 which is farthest from the electrostatic dust collecting module 2 and is not in the set to be operated to the set to be operated, until the number of the charging modules 11 in the set to be operated reaches the start-up number, and then enters step S32;

[0084] Step S32: the control module controls the charging modules 11 included in the waiting-to-operate set to operate, and then proceeds to step S33;

[0085] Step S33: the control module controls the electrostatic dust collection module 2 to operate.

[0086] In this embodiment, if Figure 4 As shown, the plurality of charging modules include a first charging module 11a, a second charging module 11b, a third charging module 11c and a fourth charging module 11d. The first charging module 11a, the second charging module 11b, the third charging module 11c and the fourth charging module 11d are arranged in sequence along the airflow channel 31 of the housing 3, and the fourth charging module 11d, the third charging module 11c, the second charging module 11b and the first charging module 11a are sequentially away from the electrostatic dust collection module 2.

[0087] The control module preferentially adds the first charging module 11a to the set to be operated. If the number of charging modules 11 in the set to be operated is less than the number of charging modules 11 that are turned on, the second charging module 11b is added to the set to be operated. If the number of charging modules 11 in the set to be operated is still less than the number of charging modules 11 that are turned on, the third charging module 11c is added to the set to be operated. If the number of charging modules 11 in the set to be operated is still less than the number of charging modules 11 that are turned on, the fourth charging module 11d is added to the set to be operated until the number of charging modules 11 in the set to be operated is equal to the number of charging modules 11 that are turned on.

[0088] The control module controls the charging modules 11 included in the set to be operated to operate, and the charging modules 11 far away from the electrostatic dust collection module 2 can be turned on preferentially. In the process of moving from the charging module 11 to the electrostatic dust collection module 2, the particles can fully absorb the charged particles. At the same time, the particles with different charges can also attract each other and gather and settle during the movement, thereby improving the purification effect.

[0089] The following is a specific control strategy table for an air purification device:

[0090]

[0091] The following is a comparison table of specific control strategies and effects of air purification devices:

[0092]

[0093]

[0094] It can be seen from the above table that a better purification effect can be obtained by adopting the control method in this embodiment.

[0095] In an illustrative embodiment, Figure 3 As shown, the air purification device 100 also includes a fan 4 and a dust sensor. The fan 4 can drive the air in the airflow channel 31 to flow through the charging component 1 and the electrostatic dust collection module 2 in sequence. The fan 4 can be arranged in the airflow channel 31 of the housing 3. The fan 4 can also be arranged outside the housing 3, and the fan 4 is connected to the air inlet 32 ​​or the air outlet 33 of the housing 3. In this embodiment, the fan 4 is arranged in the airflow channel 31 and is located downstream of the electrostatic dust collection module 2. When the fan 4 is running, the air inlet 32 ​​generates negative pressure and inhales the air to be purified. The air to be purified is purified after flowing through the charging component 1 and the electrostatic dust collection module 2, and the air outlet 33 discharges the purified air. The fan 4 is arranged downstream of the electrostatic dust collection module 2, and dust accumulation on the fan 4 can also be avoided. The fan 4 is electrically connected to the control module, and the control module controls the operation of the fan 4 when the charging component 1 and the electrostatic dust collection module 2 are running.

[0096] The dust sensor is arranged on the housing 3, and can be arranged at the air inlet 32, or can be arranged in the air flow channel 31 and located upstream of the charging component 1. The dust sensor is electrically connected to the control module. The dust sensor is used to measure the dust concentration in the air input into the air flow channel 31, that is, to measure the dust concentration of the air to be purified.

[0097] Step S1 includes steps S11 to S12.

[0098] Step S11 : the control module obtains the current rotation speed of the fan 4 and the current dust concentration of the air input into the air flow channel 31 .

[0099] The control module can directly collect the current rotation speed of the fan 4. The control module can also measure the current dust concentration of the air input into the air flow channel 31 through a dust sensor.

[0100] Step S12: The control module determines the mass of particulate matter to be collected in the airflow channel 31 of the fan 4 per unit time according to the current speed of the fan 4, the designed maximum speed of the fan 4, the air volume at the designed maximum speed of the fan 4, the slope constant of the curve of the air volume and speed of the fan 4, and the current dust concentration of the air, and enters step S2.

[0101] In this embodiment, the control module uses the following formula to calculate the mass of the particles to be collected in the air flow channel 31 in the current unit time:

[0102]

[0103] Wherein, M is the mass of the particulate matter to be collected that enters the airflow channel 31 in the current unit time, in μg / h; P1 is the current dust concentration, in μg / m 3 ; Qmax is the air volume at the maximum design speed of fan 4, in m 3 / h, Dt is the current speed of the fan 4, in rpm; d is the slope constant of the curve of the air volume and speed of the fan 4; Dmax is the designed maximum speed of the fan 4, in rpm.

[0104] In this way, the control module can calculate the mass of the to-be-collected particulate matter input into the air flow channel 31 in the current unit time only based on the current dust concentration of the acquired air and the current rotation speed of the fan 4 .

[0105] In an illustrative embodiment, Figure 4 , 6 As shown, the charging module 11 includes a first electrode 111, a second electrode 112 and an insulating bracket 113. The first electrode 111 and the second electrode 112 are both conductors. The first electrode 111 and the second electrode 112 can be made of metal or carbon fiber, such as copper, aluminum, iron and alloys thereof. The materials used to make the first electrode 111 and the second electrode 112 can be the same or different. The shapes of the first electrode 111 and the second electrode 112 are not limited, and can be cylindrical, annular, strip, sheet, block or plate-shaped. The shapes of the first electrode 111 and the second electrode 112 can be the same or different.

[0106] The insulating support 113 is a rigid structure made of insulating material. The insulating support 113 is connected to the first electrode 111 and the second electrode 112. The first electrode 111 and the second electrode 112 are spaced apart. The power module applies a voltage difference between the first electrode 111 and the second electrode 112, and an electric field is generated between the first electrode 111 and the second electrode 112. The electric field ionizes the air so that plasma is generated between the first electrode 111 and the second electrode 112. The voltage difference applied by the power module between the first electrode 111 and the second electrode 112 can be a pulse voltage, a direct current voltage, or an alternating current voltage.

[0107] In an illustrative embodiment, the second electrode 112 is configured as a cylinder. The outer peripheral wall of the second electrode 112 abuts against the inner peripheral wall of the airflow channel 31 of the housing 3, and there is no gap between the outer peripheral wall of the second electrode 112 and the inner peripheral wall of the airflow channel, and the air in the airflow channel 31 must flow through the internal channel of the second electrode 112.

[0108] The internal channels of the second electrodes 112 of the multiple charging modules 11 are connected in sequence. The multiple second electrodes 112 can be coaxially arranged, and the ends of two adjacent second electrodes 112 are mutually abutted so that the internal channels of the two second electrodes 112 are mutually connected. Two adjacent second electrodes 112 in the multiple second electrodes 112 can also be spaced apart from each other, and the internal channels of the two adjacent second electrodes 112 can be mutually connected through the airflow channel 31 between the two second electrodes 112.

[0109] The first electrode 111 is arranged inside the second electrode 112. The first electrode 111 is arranged in a straight strip structure. The first electrode 111 and the second electrode 112 are arranged coaxially. One end of the first electrode 111 is arranged as a discharge tip 1111, and the discharge tip 1111 can be needle-shaped, pointed tooth-shaped or conical. The discharge tip 1111 faces one end of the second electrode 112.

[0110] The insulating support 113 is configured in a strip shape, one end of the insulating support 113 is connected to the side wall of the second electrode 112 , and the other end of the insulating support 113 is connected to the middle of the second electrode 112 or an end of the second electrode 112 facing away from the discharge tip 1111 .

[0111] In this way, when a voltage difference is applied between the first electrode 111 and the second electrode 112, since the curvature radius of the discharge tip 1111 is very small, the discharge tip 1111 of the first electrode 111 will discharge uniformly to the second electrode 112, so that the discharge area can cover the gap between the discharge tip 1111 and the second electrode 112. Since the air in the airflow channel 31 must flow through the internal channel of the second electrode 112, that is, it must pass through the discharge area, the particulate matter in the air has a very high probability of adsorbing charged particles and being charged when passing through the discharge area, thereby improving the dust removal effect. At the same time, the first electrode 111 is constructed in a straight strip shape and is coaxial with the second electrode 112, which can reduce the resistance to the air and improve the air flow rate.

[0112] In an exemplary embodiment, the second electrode 112 has one end for air intake and another end for air discharge. The discharge tip 1111 of the first electrode 111 faces the end of the second electrode 112 for air intake.

[0113] Since the discharge tip 1111 faces the air intake end of the second electrode 112 , the discharge tip 1111 of the second electrode 112 faces the wind, and the second electrode 112 has less resistance to the air, thereby further improving the air flow rate.

[0114] In an illustrative embodiment, Figure 7 As shown, both ends of the second electrode 112 are configured as discharge tips 1111. Both ends of the first electrode 111 face toward an end of the second electrode 112 where air enters and an end of the second electrode 112 where air exits, respectively.

[0115] When only one discharge tip 1111 of the first electrode 111 discharges, ion wind will be generated. The ion wind will increase the resistance in the second electrode 112 and reduce the static pressure. The ion wind will also hinder the airflow in the second electrode 112, resulting in a reduction in air volume. In order to prevent air intake loss, another discharge tip 1111 is added. The discharge tips 1111 at both ends of the first electrode 111 can discharge. Since the two discharge tips 1111 are facing the windward direction and the leeward direction respectively, the ion wind generated by the simultaneous discharge of the two discharge tips 1111 on the airflow can offset each other, thereby not affecting the air volume. In addition, the discharge of the two discharge tips 1111 can also increase the probability of particle charging and improve the air purification effect.

[0116] In an illustrative embodiment, Figure 8 As shown, the second electrode 112 is cylindrical. The outer wall of the second electrode 112 abuts against the inner wall of the airflow channel 31 of the housing 3, and there is no gap between the outer wall of the second electrode 112 and the inner wall of the airflow channel. The air in the airflow channel 31 must flow through the internal channel of the second electrode 112.

[0117] The charging module 11 is provided with two first electrodes 111. Both first electrodes 111 are arranged inside the second electrode 112. The first electrode 111 is arranged in a straight strip structure. Both first electrodes 111 are arranged coaxially with the second electrode 112. One end of the first electrode 111 is arranged as a discharge tip 1111, and the discharge tip 1111 may be needle-shaped, pointed-tooth-shaped or conical. The discharge tips 1111 of the two second electrodes 112 are respectively arranged at the ends of the two second electrodes 112 that are away from each other. The discharge tips 1111 of the two first electrodes 111 are respectively facing the end of the second electrode 112 where the air enters and the end of the second electrode 112 where the air exits.

[0118] The insulating support 113 is configured as a strip, and one end of the insulating support 113 is connected to the side wall of the second electrode 112. The other end of the insulating support 113 is connected to the ends of the two first electrodes 111 facing each other. In some embodiments, the insulating support 113 includes two sub-supports 1131. Both sub-supports 1131 are configured as strips. One end of the two sub-supports 1131 is respectively connected to the ends of the two first electrodes 111 close to each other, and the other ends of the two sub-supports 1131 are connected to the side wall of the second electrode 112.

[0119] The discharge tips 1111 of the two first electrodes 111 can both discharge, and the discharge tips 1111 of the two first electrodes 111 face the windward direction and the leeward direction respectively. The effects of the ion wind generated by the discharge tips 1111 of the two first electrodes 111 simultaneously discharging on the airflow can offset each other, thereby not affecting the air volume. In addition, the discharge of the discharge tips 1111 of the two first electrodes 111 can also increase the probability of particle charging and improve the air purification effect.

[0120] In an exemplary embodiment, the power module applies negative high voltage to the first electrode 111, and the voltage applied to the first electrode 111 ranges from -1 kV to -20 kV. The voltage applied to the first electrode 111 is preferably -8.5 kV. The second electrode 112 is grounded.

[0121] In this way, the voltage difference between the first electrode 111 and the second electrode 112 is -1 kV to -20 kV, which can break through the air to generate plasma.

[0122] In an illustrative embodiment, the charging form of the charging module 11 may also include needle plate plasma, carbon brush plus syringe plasma, etc.

[0123] The present application describes multiple embodiments, but the description is exemplary rather than restrictive, and it is obvious to those skilled in the art that there may be more embodiments and implementations within the scope of the embodiments described in the present application. Although many possible feature combinations are shown in the drawings and discussed in the specific embodiments, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

[0124] The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in the present application may also be combined with any conventional features or elements to form a unique invention scheme defined by the claims. Any features or elements of any embodiment may also be combined with features or elements from other invention schemes to form another unique invention scheme defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in the present application may be implemented individually or in any appropriate combination. Therefore, except for the limitations made according to the attached claims and their equivalents, the embodiments are not subject to other restrictions. In addition, various modifications and changes may be made within the scope of protection of the attached claims.

[0125] In addition, when describing representative embodiments, the specification may have presented the method and / or process as a specific sequence of steps. However, to the extent that the method or process does not rely on the specific order of the steps described herein, the method or process should not be limited to the steps of the specific order described. As will be understood by those of ordinary skill in the art, other sequences of steps are also possible. Therefore, the specific sequence of the steps set forth in the specification should not be interpreted as a limitation to the claims. In addition, the claims for the method and / or process should not be limited to the steps of performing them in the order written, and those skilled in the art can easily understand that these sequences can be changed and still remain within the spirit and scope of the embodiments of the present application.

Claims

1. An air purification device, It is characterized in that include: A shell body having an air flow channel therein; a charging assembly, disposed in the airflow channel, comprising a plurality of charging modules sequentially arranged along the airflow channel, wherein the charging modules are configured to ionize the air so as to charge particles in the air; and The electrostatic dust collection module is arranged in the air flow channel and downstream of the charging component, and is configured to apply an electrostatic field to adsorb charged particles.

2. The air purification device according to claim 1, It is characterized in that Also included is a control module electrically connected to the charging assembly and the electrostatic dust collection module; The control module is configured as Obtain the mass of the particles to be collected in the current unit time input into the airflow channel; Determine the number of charging modules to be opened according to the mass of the to-be-collected particulate matter input into the airflow channel in the current unit time, wherein the number of charging modules to be opened tends to increase with the increase of the mass of the to-be-collected particulate matter; Control the operation of the charging modules and electrostatic dust collection modules of the opened number.

3. The air purification device according to claim 2, It is characterized in that The step of determining the number of charging modules turned on includes: Determine the value interval to which the mass of the particulate matter to be collected in the input airflow channel in the current unit time belongs, and obtain the opening quantity corresponding to the value interval; The value range of the mass of the to-be-collected particulate matter input into the airflow channel per unit time is divided into a plurality of non-overlapping value intervals, and a value interval with a larger value corresponds to a larger number of charging modules that are turned on.

4. The air purification device according to claim 3, It is characterized in that The difference between the numbers of charging modules turned on in two adjacent value intervals is 1.

5. The air purification device according to claim 2, It is characterized in that The control of the operation of the charging modules and electrostatic dust collection modules of the number of openings includes: Adding the charging module that is farthest from the electrostatic dust collection module and is not in the set to be operated to the set to be operated until the number of charging modules in the set to be operated reaches the start-up number; Controls the operation of the charging modules included in the set to be run.

6. The air purification device according to claim 2, It is characterized in that Also includes: A fan, used to drive air to flow through the charging component and the electrostatic dust collection module in sequence; as well as A dust sensor, electrically connected to the control module, for measuring the dust concentration of the air input into the air flow channel; The control module is also configured as: Obtain the current dust concentration and the current speed of the fan, and determine the mass of particulate matter to be collected in the input airflow flow channel within the current unit time based on the current dust concentration, the current speed, the fan's designed maximum speed, the air volume at the fan's designed maximum speed, and the slope constant of the curve between the fan's air volume and speed.

7. The air purification device according to any one of claims 1 to 6, It is characterized in that The charging module includes a first electrode, a second electrode spaced apart from the first electrode, and an insulating bracket connecting the first electrode and the second electrode; A voltage difference is applied between the first electrode and the second electrode to generate plasma.

8. The air purification device according to claim 7, It is characterized in that The second electrode is cylindrical in shape, and the outer peripheral wall of the second electrode abuts against the inner peripheral wall of the air flow channel; The first electrode is disposed inside the second electrode and is configured as a straight bar coaxial with the second electrode, and one end of the first electrode is configured as a discharge tip.

9. The air purification device according to claim 8, It is characterized in that The discharge tip faces an end of the second electrode that enters the wind.

10. The air purification device according to claim 8, It is characterized in that Both ends of the first electrode are configured as discharge tips, and the two discharge tips are respectively directed toward an air inlet end and an air outlet end of the second electrode.

11. The air purification device according to claim 8, It is characterized in that Two first electrodes are provided, and discharge tips of the two first electrodes are respectively located at opposite ends of the two first electrodes and respectively face the air inlet end and the air outlet end of the second electrode.

12. The air purification device according to claim 7, It is characterized in that The voltage applied to the first electrode ranges from -1 kV to -20 kV, and the second electrode is grounded.

13. A method for controlling an air purification device, It is characterized in that The control method is implemented based on the air purification device according to any one of claims 1 to 12, and the control method includes: Obtain the mass of the particles to be collected in the current unit time input into the airflow channel; Determine the number of charging modules to be opened according to the mass of the to-be-collected particulate matter input into the airflow channel in the current unit time, wherein the number of charging modules to be opened tends to increase with the increase of the mass of the to-be-collected particulate matter; Control the operation of the charging modules and electrostatic dust collection modules of the opened number.

14. An air treatment device, It is characterized in that The invention comprises an air purification device as claimed in any one of claims 1 to 12.

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