A new fan and air purification method

Abstract

The embodiment of the application provides a fresh air machine and an air purification method, the fresh air machine comprising: a shell, an electronic filter, a high-voltage generator, a first fan, an electrostatic adsorber and a second fan; the electronic filter comprises: a cylinder electrode and an ion generator located inside the cylinder electrode; the high-voltage generator is electrically connected with the ion generator; the shell is provided with an outdoor air inlet, an indoor air outlet and a first indoor air inlet; the outdoor air inlet is provided with a first air valve, and the first indoor air inlet is provided with a second air valve; in the embodiment of the application, air is purified through discharge of the ion generator, the cumulative filtering capacity of the fresh air machine is improved, and secondary pollution is avoided; meanwhile, by controlling the opening and closing of the first air valve and the second air valve, the discharge air purification can be applied to indoor and outdoor air exchange and indoor air circulation scenes, and the air purification effect of the fresh air machine is improved.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the air purification technical field, in particular to a fresh air machine and air purification method. BACKGROUND

[0002] The fresh air machine on the market generally adopts a physical filtering mode, referring to Figure 1 , an existing fresh air machine is shown in the figure, the arrow in the figure is used to indicate the indoor air flow direction, the existing fresh air machine only includes a heat exchanger and simple filtering components, for example: a primary efficiency filter module, a high efficiency particulate air filter (HEPA) and an activated carbon filter. The existing fresh air machine needs to replace the filter medium regularly, and the cumulative filtering capacity is poor, which is easy to cause secondary pollution. SUMMARY

[0003] The embodiment of the present application provides a fresh air machine and air purification method, and solves the problems of poor cumulative filtering capacity of the existing fresh air machine and easy to cause secondary pollution.

[0004] In a first aspect, the embodiment of the present application provides a fresh air machine, comprising: a shell, and an electronic filter, a high-voltage generator, a first fan, an electrostatic adsorber and a second fan located in the shell;

[0005] The electronic filter comprises: a cylinder electrode and an ion generator located in the inside of the cylinder electrode;

[0006] The high-voltage generator is electrically connected with the ion generator;

[0007] The shell is provided with an outdoor air inlet, an indoor air outlet and a first indoor air inlet;

[0008] The outdoor air inlet and the first indoor air inlet are communicated with the electronic filter through a first air duct;

[0009] The air outlet of the electronic filter is communicated with the air inlet of the first fan;

[0010] The air outlet of the first fan is communicated with the air inlet of the electrostatic adsorber through a second air duct;

[0011] The air outlet of the electrostatic adsorber is communicated with the air inlet of the second fan;

[0012] The air inlet of the second fan is communicated with the indoor air outlet through a third air duct;

[0013] The first fan and the second fan are used to drive air to flow in from the outdoor air inlet or the first indoor air inlet, and to flow out from the indoor air outlet;

[0014] The outdoor air inlet is provided with a first air valve, and the first indoor air inlet is provided with a second air valve;

[0015] The air flows into the electronic filter through the outdoor air inlet or the first indoor air inlet, the high-voltage generator supplies power to the ion generator to discharge the ion generator to purify the air.

[0016] Optionally, the fresh air machine further comprises a heat exchanger and a third fan;

[0017] The heat exchanger is provided with a first air inlet, a first air outlet, a second air inlet and a second air outlet;

[0018] The shell is further provided with a second indoor air inlet and an outdoor air outlet;

[0019] The first air inlet is in communication with the outdoor air inlet and the first indoor air inlet through the first air duct;

[0020] The first air outlet is in communication with the air inlet of the electronic filter;

[0021] The second air inlet is in communication with the second indoor air inlet;

[0022] The second air outlet is in communication with the air inlet of the third fan through a fourth air duct;

[0023] The air outlet of the third fan is in communication with the outdoor air outlet;

[0024] The third fan is used to drive air to flow into the second indoor air inlet and flow out of the outdoor air outlet.

[0025] Optionally, the first air duct, the second air duct, the third air duct and the fourth air duct are integrally formed polypropylene plastic EPP air ducts;

[0026] The electronic filter, the high-voltage generator, the first fan, the electrostatic adsorber, the second fan and the heat exchanger are all carried on the EPP air duct.

[0027] Optionally, the ion generator comprises a hollow electrode column, a ground electrode column, a support structure, a first electrode belt and a second electrode belt;

[0028] The ground electrode column is fixed to the central axis position of the hollow electrode column through the support structure;

[0029] The first electrode belt is distributed on the outer wall of the hollow electrode column, and the second electrode belt is distributed on the inner wall of the hollow electrode column;

[0030] The first electrode band comprises a plurality of first pointed electrodes pointing to the outside of the hollow electrode column, and the second electrode band comprises a plurality of second pointed electrodes pointing to the inside of the hollow electrode column.

[0031] The high-voltage generator is electrically connected to the hollow electrode column.

[0032] After air flows into the electronic filter, the hollow electrode column is powered to make the first pointed electrodes discharge to purify the air flowing through the outer wall of the hollow electrode column, and to make the second pointed electrodes discharge to purify the air flowing through the inner wall of the hollow electrode column.

[0033] Optionally, the ion generator comprises a hollow electrode column, a ground electrode column, and a support structure.

[0034] The hollow electrode column is curled from a parallelogram conductive plate.

[0035] The ground electrode column is fixed to the central axis of the hollow electrode column by the support structure.

[0036] A plurality of electrode regions parallel to each other are arranged on the side wall of the hollow electrode column.

[0037] The electrode regions comprise a plurality of first pointed electrodes and a plurality of second pointed electrodes integrally formed with the hollow electrode column.

[0038] The first pointed electrodes are bent to the outer wall of the hollow electrode column, and the second pointed electrodes are bent to the inner wall of the hollow electrode column.

[0039] The high-voltage generator is electrically connected to the hollow electrode column.

[0040] After air flows into the electronic filter, the hollow electrode column is powered to make the first pointed electrodes discharge to purify the air flowing through the outer wall of the hollow electrode column, and to make the second pointed electrodes discharge to purify the air flowing through the inner wall of the hollow electrode column.

[0041] Optionally, the first electrode band is distributed on the outer wall of the hollow electrode column in a spiral direction, and the second electrode band is distributed on the inner wall of the hollow electrode column in a spiral direction.

[0042] The spiral directions of the first electrode band and the second electrode band are the same.

[0043] Optionally, the connecting line of adjacent first pointed electrodes is a spiral line, and has a first inclination angle with the horizontal plane, the first inclination angle being any angle in the range of 3° to 45°.

[0044] The connecting line adjacent to the second tip electrode is a spiral line, and has a second inclination angle with the horizontal plane, the second inclination angle being any angle in the range of 3-45 degrees.

[0045] Optionally, the electrode region has an inclination angle with the horizontal plane.

[0046] Optionally, the inclination angle is any angle in the range of 3-45 degrees.

[0047] Optionally, the tip shape of the first tip electrode and the second tip electrode is a triangle, and the top angle is no more than 45 degrees.

[0048] In a second aspect, an embodiment of the present application provides an air purification method applied to the fresh air machine as described in the first aspect, and the method comprises:

[0049] Starting the first fan and the second fan, and detecting the indoor air quality;

[0050] In the case that the indoor gas pollutant concentration reaches a first preset value, opening the first air valve, closing the second air valve, and controlling the high-voltage generator to supply power to the ion generator in the electronic filter.

[0051] In the case that the indoor solid pollutant concentration reaches a second preset value, opening the second air valve, closing the first air valve, and controlling the high-voltage generator to supply power to the ion generator in the electronic filter.

[0052] Optionally, in the case that the first air valve is opened and the second air valve is closed, the method further comprises:

[0053] Starting the third fan, and performing heat exchange on the air flowing in from the outdoor air inlet and the air flowing in from the second indoor air inlet through the heat exchanger.

[0054] In the embodiment of the present application, the ion generator is used to discharge to purify the air, the cumulative filtration capacity of the fresh air machine is improved, and secondary pollution is avoided; meanwhile, by controlling the opening and closing of the first air valve and the second air valve, the discharge purification air can be applied to indoor and outdoor air exchange and indoor air circulation scenarios, and the air purification effect of the fresh air machine is improved. BRIEF DESCRIPTION OF DRAWINGS

[0055] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the description of the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0056] Figure 1Structure schematic view of a fresh air machine provided by an embodiment of the present application;

[0057] Figure 2 Structure schematic view of a fresh air machine provided by an embodiment of the present application;

[0058] Figure 3 Structure schematic view of a fresh air machine provided by an embodiment of the present application;

[0059] Figure 4a Structure schematic view of an ion generator provided by an embodiment of the present application;

[0060] Figure 4b Top view schematic view of an ion generator provided by an embodiment of the present application;

[0061] Figure 5a Structure schematic view of an ion generator provided by an embodiment of the present application;

[0062] Figure 5b Unfolded schematic view of a hollow electrode column provided by an embodiment of the present application;

[0063] Figure 5c Schematic view of a sharp electrode cut in an electrode area provided by an embodiment of the present application;

[0064] Figure 5d Top view schematic view of a sharp electrode after bending provided by an embodiment of the present application;

[0065] Figure 5e Side view schematic view of a hollow electrode column provided by an embodiment of the present application;

[0066] Figure 6a Electric field distribution schematic view of a sharp electrode provided by an embodiment of the present application;

[0067] Figure 6b Energy distribution schematic view of a sharp electrode provided by an embodiment of the present application;

[0068] Figure 7 Flow schematic view of an air purification method provided by an embodiment of the present application. DETAILED DESCRIPTION

[0069] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0070] In the embodiments of the present application, the words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration, in no way implying any preference or relation by equivalency. In fact, the use of such words is intended to present concepts in a concrete manner.

[0071] Herein, the relational terms such as "first" and "second" and the like are used only to distinguish a same name, not to imply a relationship or order between the names.

[0072] Referring to Figures 1 to 3 , the embodiments of the present application provide a new fan, comprising:

[0073] The shell 1, and the electronic filter 2, the high-voltage generator 3, the first fan 4, the electrostatic adsorber 5 and the second fan 6 located in the shell;

[0074] The electronic filter 2 comprises: a cylinder electrode 21 and an ion generator 22 located inside the cylinder electrode 21, it should be noted that since the ion generator 22 is located inside the cylinder electrode 21, in Figure 1 , only the cylinder electrode 21 is identified, and the specific structure of the ion generator 22 is described later in combination with Figures 4a to 5e ;

[0075] The high-voltage generator 3 is electrically connected with the ion generator 22, and the high-voltage generator 3 provides high-voltage electricity for the ion generator 22, so as to realize the discharge of the ion generator 22, ionize the air through the discharge, and produce substances such as plasma, negative ions, ozone and the like to purify the air;

[0076] The shell 1 is provided with an outdoor air inlet 11, an indoor air outlet 12 and a first indoor air inlet 13;

[0077] Specifically, referring to Figure 1 , the outdoor air inlet 11 and the first indoor air inlet 13 are communicated with the electronic filter 2 through the first air duct 101, so that the outdoor air can flow into the electronic filter 2 from the outdoor air inlet 11 for purification, and the indoor air can flow into the electronic filter 2 from the first indoor air inlet 13 for purification;

[0078] The air outlet of the electronic filter 2 is communicated with the air inlet of the first fan 4, so that the air purified by the electronic filter 2 can continue to flow backward along the air path under the action of the first fan 4;

[0079] The air outlet of the first fan 4 is communicated with the air inlet of the electrostatic precipitator 5 through the second air duct 102, and during the purification process of the electronic filter 2, the particles in the air are charged, and when the charged particles flow through the electrostatic precipitator 5 along with the air, the charged particles are adsorbed by the electrostatic precipitator 5, so that the air is further purified.

[0080] The air outlet of the electrostatic precipitator 5 is communicated with the air inlet of the second fan 6, so that the air adsorbed by the electrostatic precipitator 5 can continue to flow backward along the air path under the action of the second fan 6.

[0081] The air inlet of the second fan 6 is communicated with the indoor air outlet 12 through the third air duct 103, so that the air purified by the electronic filter 2 and adsorbed by the electrostatic precipitator 5 flows into the room through the indoor air outlet 12, ensuring that the air entering the room is clean. Figures 1 to 3 As shown in the optional carbon bag 7 in the third air duct 103, the air can be subjected to a final adsorption process before flowing into the room, and in addition, the ionization of the air in the electronic filter 2 produces ozone and other substances for disinfection, which can be absorbed by the carbon bag 7 to prevent the ozone and other substances from flowing into the room.

[0082] The first fan 4 and the second fan 6 are used to drive the air to flow into the room from the outdoor air inlet 11 or the first indoor air inlet 13, and to flow out from the indoor air outlet 12.

[0083] The outdoor air inlet 11 is provided with a first air valve 110, and the first indoor air inlet 13 is provided with a second air valve 130, and by controlling the opening and closing of the first air valve 110 and the second air valve 130, the air in the room or the outdoor air can be purified in the new fan, so that the air purification can be carried out in the indoor and outdoor air exchange and indoor air circulation scenes. Figures 1 to 3 Optionally, a control module 100 is arranged in the new fan, and the control module 100 is used to control the start, stop and operation of each component.

[0084] In the embodiment of the application, the air is purified by the ion generator, the cumulative filtration capacity of the new fan is improved, and secondary pollution is avoided; at the same time, by controlling the opening and closing of the first air valve and the second air valve, the air purification by the ion generator can be applied to the indoor and outdoor air exchange and indoor air circulation scenes, and the air purification effect of the new fan is improved.

[0085] In some embodiments, the new fan further comprises a heat exchanger 8 and a third fan 9.

[0086] In some embodiments, the new fan further comprises a heat exchanger 8 and a third fan 9. Figures 1 to 3

[0087] ​The heat exchanger 8 is provided with a first air inlet, a first air outlet, a second air inlet and a second air outlet;

[0088] The housing 1 is further provided with a second indoor air inlet 14 and an outdoor air outlet 15;

[0089] Specifically, the first air inlet is in communication with the outdoor air inlet 11 and the first indoor air inlet 13 through the first air duct 101;

[0090] The first air outlet is in communication with the air inlet of the electronic filter 2;

[0091] The second air inlet is in communication with the second indoor air inlet 14;

[0092] The second air outlet is in communication with the air inlet of the third fan 9 through the fourth air duct 104;

[0093] The air outlet of the third fan 9 is in communication with the outdoor air outlet 15;

[0094] The third fan 9 is used to drive air to flow in from the second indoor air inlet 14 and flow out from the outdoor air outlet 15.

[0095] In the embodiment of the present application, outdoor air flows in from the outdoor air inlet 11, passes through the heat exchanger 8 and enters the electronic filter 2, while outdoor air flows in from the second indoor air inlet 14, passes through the heat exchanger 8, enters the fourth air duct 104 and flows out from the outdoor air outlet 15. In this way, in the scenario of indoor and outdoor air exchange, the air flowing in from the outdoor to the indoor and the air flowing in from the indoor to the outdoor exchange heat in the heat exchanger 8, so that the temperature of the air entering the indoor is appropriate.

[0096] The heat exchanger 8 described above can adopt an existing heat exchanger. It can be understood that the two air flows for heat exchange in the heat exchanger flow in different channels, that is, in the heat exchange process, the air flows in different air paths only exchange heat and do not mix, thereby avoiding mutual pollution of indoor and outdoor air.

[0097] Further, as shown in FIG. 1, the first air inlet and the second air outlet of the heat exchanger 8 can be provided with a filter screen 81 for filtering air. Figure 1

[0098] It should be noted that the heat exchanger 8 described above is used in the scenario of indoor and outdoor air exchange, in which the first air valve 110 is opened and the second air valve 130 is closed.

[0099] In some embodiments, the first air duct 101, the second air duct 102, the third air duct 130 and the fourth air duct 104 are an integrated expanded polypropylene (EPP) air duct 105;

[0100] ​The electronic filter 2, the high-voltage generator 3, the first fan 4, the electrostatic adsorber 5, the second fan 6 and the heat exchanger 8 are all borne on the EPP air duct 105.

[0101] In the embodiment of the application, the EPP air duct 105 is used to divide the air paths inside the fresh air machine, and meanwhile, the EPP product is used to bear the components inside the fresh air machine due to its excellent shock absorption and energy absorption performance, high recovery rate after deformation, good heat resistance, chemical resistance, oil resistance, heat insulation and light weight, so as to realize stable assembly.

[0102] Optionally, as shown in Figure 3 , the shell 1 can be divided into detachable upper and lower shells, and correspondingly, the EPP air duct 105 can also be divided into detachable upper and lower parts, which is beneficial to the disassembly and assembly of the fresh air machine and facilitates regular maintenance and repair, and meanwhile, the two-part upper and lower clamping mode is beneficial to the stability of the fresh air machine.

[0103] Referring to Figure 4a and Figure 4b , the structure of an ion generator 22 is shown in the figures, which comprises a hollow electrode column 221, a ground electrode column 222, a support structure 223, a first electrode band 224 and a second electrode band 225.

[0104] The ground electrode column 222 is fixed to the central axis position of the hollow electrode column 221 through the support structure 223.

[0105] The first electrode band 224 is distributed on the outer wall of the hollow electrode column 221, and the second electrode band 225 is distributed on the inner wall of the hollow electrode column 221.

[0106] The first electrode band 224 comprises a plurality of first pointed electrodes 2241 pointing to the outside of the hollow electrode column 221, and the second electrode band 225 comprises a plurality of second pointed electrodes 2251 pointing to the inside of the hollow electrode column 221.

[0107] The high-voltage generator 3 is electrically connected to the hollow electrode column 221.

[0108] Wherein, after the air flows into the air purifier, power is supplied to the hollow electrode column, so that the first pointed electrodes 2241 discharge to purify the air flowing through the outer wall of the hollow electrode column 221, and the second pointed electrodes 2251 discharge to purify the air flowing through the inner wall of the hollow electrode column 221.

[0109] The materials of the first pointed electrodes 2241 and the second pointed electrodes 2251 are good conductive materials, such as copper, aluminum, nickel, etc. When the hollow electrode column 221 is powered, the first pointed electrodes 2241 and the second pointed electrodes 2251 can discharge to generate negative ions, plasma and / or ozone and other substances to purify the air.

[0110] The ground electrode column 222 functions to generate a large voltage difference between the second tip electrode 2251 and the ground electrode column 222, thereby realizing discharge. It can be understood that in an actual application scenario, when the ion generator is installed inside the air purifier, a grounded barrel electrode is arranged outside the ion generator to generate a large voltage difference between the first tip electrode 2241 and the barrel electrode, thereby realizing discharge.

[0111] As shown in Figure 4a The support structure 223 is a cross-shaped support frame, and the number of the support structure 223 can be 2, which are arranged at the upper and lower ends of the hollow electrode column 221 to fix the ground electrode column 222. The number of the support structure 223 can also be 3 or more, which are arranged at the upper and lower ends and the middle part of the hollow electrode column 221 to ensure stable fixation of the ground electrode column 222.

[0112] It should be noted that the material of the support structure 223 should be selected from non-conductive materials to avoid short-circuiting between the ground electrode column 222 and the hollow electrode column 221.

[0113] In the embodiment of the present application, when air flows through the ion generator 22, it will flow through the outer wall and the inner wall of the hollow electrode column 221 at the same time. At this time, the hollow electrode column 221 is powered to make the first tip electrode 2241 and the second tip electrode 2251 discharge to purify the air flowing through the outer wall and the inner wall of the hollow electrode column 221 at the same time. Since the tip electrodes are arranged on the outer wall and the inner wall of the hollow electrode column 221 for discharge purification, the air purification efficiency of the ion purifier per unit length can be increased to about twice the original, greatly improving the air purification efficiency of the ion generator under the same size. In this way, under the condition that the purification efficiency meets the demand, the size of the ion generator can be reduced, and the overall size of the air purifier can be reduced, avoiding the occupation of a large indoor space by the air purifier.

[0114] In some embodiments, the first electrode band 224 is distributed in a spiral direction on the outer wall of the hollow electrode column 221, and the second electrode band 225 is distributed in a spiral direction on the inner wall of the hollow electrode column 221.

[0115] The spiral directions of the first electrode band 224 and the second electrode band 225 are the same.

[0116] Further, the connecting line of adjacent first tip electrodes 2241 is a spiral line, and has a first inclination angle with the horizontal plane; the connecting line of adjacent second tip electrodes 2251 is a spiral line, and has a second inclination angle with the horizontal plane.

[0117] It can be understood that the electrode strips are distributed on the hollow electrode column 221 in a spiral direction, so that the adjacent sharp electrodes can be connected in a spiral line by arranging the sharp electrodes in the distribution mode of the electrode strips. When the air flows through the sharp electrodes, the air will be guided according to the spiral arrangement of the sharp electrodes, so that the air flows in a vortex manner on the outer wall and the inner wall of the hollow electrode column 221, reduces the turbulence caused by the disturbance of the air, and reduces the wind noise of the air purifier; at the same time, the stable vortex airflow is conducive to the purification of the air, and further improves the air purification efficiency of the air purifier.

[0118] Specifically, the first inclination angle is any angle in the range of 3° to 45°, and the second inclination angle is any angle in the range of 3° to 45°. With the angle range, the air purifier can obtain better wind noise reduction effect and air purification efficiency. It can be understood that the angles of the first inclination angle and the second inclination angle can be the same or different.

[0119] It should be noted that when setting the spiral direction of the electrode strips, the environmental factors applied to the air purifier should be considered. Specifically, the environmental factor is the local geostrophic deflection force direction. The geostrophic deflection force will affect the vortex flow of the fluid, so the flow direction should be matched with the geostrophic deflection force direction when guiding the flow of the gas.

[0120] Specifically, when the use area of the air purifier is in the northern hemisphere, the spiral direction of the electrode strips is counterclockwise along the gas flow direction; when the use area of the air purifier is in the southern hemisphere, the spiral direction of the electrode strips is clockwise along the gas flow direction. In this way, the influence of the geostrophic deflection force on the flow of the air can be avoided, and the stable flow of the gas can be ensured.

[0121] Referring to Figures 5a to 5e , a structure of an ionizer 22 is shown in the figure, which includes a hollow electrode column 31, a ground electrode column 32, and a support structure 33.

[0122] The hollow electrode column 31 is curled from a parallelogram conductive plate;

[0123] The ground electrode column 32 is fixed to the central axis position of the hollow electrode column 31 through the support structure 33;

[0124] A plurality of electrode regions 310 parallel to each other are arranged on the side wall of the hollow electrode column 31;

[0125] The electrode region 310 includes a plurality of first sharp electrodes 311 and a plurality of second sharp electrodes 312 integrally formed with the hollow electrode column 31;

[0126] The first sharp electrode 311 is bent towards the outer wall of the hollow electrode column 31, and the second sharp electrode 312 is bent towards the inner wall of the hollow electrode column 31;

[0127] The high-voltage generator 3 is electrically connected to the hollow electrode post 31;

[0128] In this process, after air flows into the air purifier, it supplies power to the hollow electrode column, causing the first tip electrode 311 to discharge to purify the air flowing through the outer wall of the hollow electrode column, and causing the second tip electrode 312 to discharge to purify the air flowing through the inner wall of the hollow electrode column.

[0129] The hollow electrode post 31 is formed by rolling a conductive plate of a material with good conductivity, such as copper, aluminum, or nickel. Since the first tip electrode 311 and the second tip electrode 312 are integrally formed with the hollow electrode post 31, the first tip electrode 311 and the second tip electrode 312 are also materials with good conductivity. When the hollow electrode post 31 is energized, the first tip electrode 311 and the second tip electrode 312 can discharge, thereby generating negative ions, plasma, and / or ozone to purify the air.

[0130] The function of the aforementioned ground electrode post 32 is to generate a large voltage difference between the second tip electrode 312 and the ground electrode post 32, thereby achieving discharge. It is understandable that in practical applications, when the ion generator is installed inside an air purifier, a grounded cylindrical electrode will be installed outside the ion generator to generate a large voltage difference between the first tip electrode 311 and the cylindrical electrode, thereby achieving discharge.

[0131] like Figure 5a As shown, the support structure 33 is a cross-shaped support frame. There can be two support structures 33, which are respectively set at the upper and lower ends of the hollow electrode post 31 to fix the ground electrode post 32. It should be noted that the material of the support structure 33 should be a non-conductive material to avoid short circuit between the ground electrode post 32 and the hollow electrode post 31.

[0132] In this embodiment of the invention, when air flows through the ion generator, it simultaneously flows through the outer and inner walls of the hollow electrode column 31. At this time, power is supplied to the hollow electrode column 31, causing the first pointed electrode 311 and the second pointed electrode 312 to discharge, thereby simultaneously purifying the air flowing through the outer and inner walls of the hollow electrode column 31. Because pointed electrodes are provided on both the outer and inner walls of the hollow electrode column 31 for discharge purification, the air purification efficiency per unit length of the ion purifier can be increased to approximately twice the original level. This significantly improves the air purification efficiency of the ion generator per unit size. Thus, while meeting the purification efficiency requirements, the size of the ion generator can be reduced, thereby reducing the overall size of the air purifier and preventing it from occupying too much indoor space.

[0133] In the embodiment of the present application, the ion generator adopts a hollow electrode column, and a first tip electrode and a second tip electrode are arranged on the hollow electrode column and integrally formed with the hollow electrode column, wherein the first tip electrode is bent towards the outer wall of the hollow electrode column, and the second tip electrode is bent towards the inner wall of the hollow electrode column, so that the first tip electrode and the second tip electrode discharge at the same time, and the air flowing through the outer wall and the inner wall of the hollow electrode column is purified, the air purification efficiency of the ion generator under a unit size is improved, and the ion generator can balance the size and the purification effect.

[0134] Figures 5b to 5d In the process of processing the hollow electrode column 31, first, a plurality of electrode regions 310 parallel to each other are determined on the conductive plate, Figure 5b The electrode region 310 shown is rectangular. After the electrode region 310 is determined, the first tip electrode 311 and the second tip electrode 312 are processed in the determined electrode region 310.

[0135] Referring to Figure 5c The conductive plate is cut in the electrode region 310, so that the staggered opposite tip electrodes are formed in the electrode region 310.

[0136] It should be noted that Figure 5c The cutting shapes of the first tip electrode 311 and the second tip electrode 312 shown in the embodiment are only schematic, and in the actual processing process, those skilled in the art can adjust the cutting shape according to the actual product needs.

[0137] After the cutting of the first tip electrode 311 and the second tip electrode 312 is completed, the first tip electrode 311 is bent towards the outer wall of the conductive plate (the outer wall refers to the outer wall of the conductive plate after being curled into the hollow electrode column 31), and the second tip electrode 312 is bent towards the inner wall of the conductive plate (the inner wall refers to the inner wall of the conductive plate after being curled into the hollow electrode column 31). As Figure 5d shown, for a single electrode region 310, the first tip electrode 311 and the second tip electrode 312 respectively point to the two sides of the conductive plate from the top view.

[0138] After the bending of all the first tip electrodes 311 and the second tip electrodes 312 is completed, the conductive plate is curled to obtain the hollow electrode column 31.

[0139] As can be understood Figure 5e shown, the side edge of the curled hollow electrode column 31 will have a joint 313 formed by the two ends of the conductive plate in contact, and the joint 113 can be fixed by bolts or by welding, and the fixing method of the joint 113 is not limited in the embodiment of the present application.

[0140] In some embodiments, the electrode region 310 has an inclination angle with the horizontal plane.

[0141] In the embodiment of the application, since the electrode area 310 has an inclination angle with the horizontal plane, the first tip electrode 311 and the second tip electrode 312 processed in the electrode area 310 also have an inclination angle with the horizontal plane. The tip electrode with the inclination angle can not only discharge and purify air, but also guide the flow of air. In this way, when the air flows through the outer wall and the inner wall of the hollow electrode column 31, the air is guided by the first tip electrode 311 and the second tip electrode 312, so that the air flows in a vortex manner on the outer wall and the inner wall of the hollow electrode column 31, reduces the turbulence caused by the disturbance of the air, and reduces the wind noise of the air purifier. At the same time, the stable vortex airflow is conducive to the purification of the air, and further improves the air purification efficiency of the air purifier.

[0142] Further, the inclination angle can be any angle in the range of 3° to 45°. Referring to Figure 5b and Figure 5e , by adopting a suitable inclination angle, the lower side of each electrode area 110 can be connected to the upper side of the next electrode area 310 after the conductive plate is curled, so that the side wall of the curled hollow electrode column 31 forms a spiral winding structure, and the air flowing through is guided to form a vortex airflow.

[0143] It should be noted that when setting the inclination direction of the electrode area 310, the environmental factors of the air purifier should be considered. Specifically, the environmental factor is the local geostrophic deflection force direction. The geostrophic deflection force will affect the vortex flow of the fluid, so the direction of the flow guide should be matched with the direction of the geostrophic deflection force when guiding the flow of the gas.

[0144] Specifically, when the use area of the air purifier is the northern hemisphere, the side wall of the curled hollow electrode column 31 should form a spiral winding structure with a counterclockwise spiral direction along the direction of the gas flow. When the use area of the air purifier is the southern hemisphere, the side wall of the curled hollow electrode column 31 should form a spiral winding structure with a clockwise spiral direction along the direction of the gas flow. In this way, the influence of the geostrophic deflection force on the flow of the gas can be avoided, and the stable flow of the gas can be ensured.

[0145] In some embodiments, for the ionizer shown in Figure 4a and Figure 4b , or the ionizer shown in Figures 5a to 5e , the tip shape of the first tip electrode and the second tip electrode is a triangle, and the top angle is not greater than 45°.

[0146] The tip electrode with the above parameter range can obtain a better discharge effect and improve the air purification efficiency.

[0147] Referring toFigure 6a and Figure 6b wherein Figure 6a is the electric field distribution map of the tip electrode, Figure 6b is the energy distribution map of the tip electrode. It can be seen from Figure 6a that the electric field is concentrated on the surface of the conductor, and is obviously more concentrated at the tip than other positions, regardless of the tip model. The electric field strength at the tip of the circular arc tip model (i.e. the model on the right side in Fig. 4a) is larger than that of the triangular tip model (i.e. the model on the left side in Fig. 6a), but the electric field of the triangular tip model is more concentrated at the tip. Figure 4b It can be seen from that the energy is only concentrated near the tip of the conductor, and the energy at the tip of the circular arc tip model (i.e. the model on the right side in Fig. 6b) is larger than that of the triangular tip model (i.e. the model on the left side in Fig. 6b), but the range of the energy of the triangular tip model is wider.

[0148] Therefore, on the surface of the conductor, the more acute the position, the greater the charge density of the tip of the conductor, the field strength near the tip is very strong, and the energy is also concentrated near the tip.

[0149] Referring to Figure 7 , an air purification method is provided in an embodiment of the present application, which is applied to a fresh air machine as shown in Figures 1 to 3 , and the specific steps of the method are as follows:

[0150] Step 701: Start the first fan and the second fan, and detect the indoor air quality, and then execute step 702 or step 703;

[0151] In the embodiment of the present application, when the user turns on the fresh air machine, the first fan and the second fan are started, and the indoor air quality is detected at the same time. The air quality detection can include detection of the concentration of indoor gaseous pollutants and / or the concentration of indoor solid pollutants. The gaseous pollutants can include carbon dioxide, nitrogen oxides, sulfur hydride, etc., and the solid pollutants can include dust, particulate matter, such as PM2.5, etc. The air quality detection can be realized by using existing air detection sensors.

[0152] According to the detection result of the indoor air quality, the fresh air machine can work in different modes.

[0153] Step 702: In the case where the concentration of indoor gaseous pollutants reaches a first preset value, open the first air valve, close the second air valve, and control the high-voltage generator to supply power to the ion generator in the electronic filter;

[0154] In the embodiment of the present application, when the concentration of gaseous pollutants in the indoor air is relatively large, indoor and outdoor air exchange is needed, at this time the fresh air machine works in the fresh air mode, specifically, the first air valve is controlled to be opened, the second air valve is controlled to be closed, and the high-voltage generator is controlled to supply power to the ion generator in the electronic filter, so that the outdoor air flows in from the outdoor air inlet and flows out from the indoor air outlet after being purified inside the fresh air machine, and the specific purification process can be referred to the description of the foregoing device part, which will not be described here.

[0155] Further, in the case that the first air valve is opened and the second air valve is closed, the third fan is started, and the air flowing in from the outdoor air inlet and the air flowing in from the second indoor air inlet are heat-exchanged through the heat exchanger. In this way, the air flowing into the indoor air from the outdoor air and the air flowing into the outdoor air from the indoor air are heat-exchanged in the heat exchanger, so that the temperature of the air entering the indoor air is appropriate.

[0156] Step 703: In the case that the concentration of solid pollutants in the indoor air reaches the second preset value, the second air valve is opened, the first air valve is closed, and the high-voltage generator is controlled to supply power to the ion generator in the electronic filter;

[0157] In the embodiment of the present application, when the concentration of solid pollutants in the indoor air is relatively large, indoor air purification is needed, at this time the fresh air machine works in the purification mode, specifically, the first air valve is controlled to be closed, the second air valve is controlled to be opened, and the high-voltage generator is controlled to supply power to the ion generator in the electronic filter, so that the indoor air flows in from the first indoor air inlet and flows out from the indoor air outlet after being purified inside the fresh air machine, realizing indoor air circulation purification, and the specific purification process can be referred to the description of the foregoing device part, which will not be described here.

[0158] In the embodiment of the present application, the air is purified by the ion generator, the cumulative filtering capacity of the fresh air machine is improved, and secondary pollution is avoided; at the same time, by controlling the opening and closing of the first air valve and the second air valve, the discharge purification air can be applied to indoor and outdoor air exchange and indoor air circulation scenes, and the air purification effect of the fresh air machine is improved.

[0159] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A fresh air machine characterized by, The utility model relates to an air purifier, comprising: a housing, and an electronic filter, a high-voltage generator, a first fan, an electrostatic precipitator and a second fan located in the housing; the electronic filter comprises a cylindrical electrode and an ion generator located inside the cylindrical electrode; the high-voltage generator is electrically connected to the ion generator; the housing is provided with an outdoor air inlet, an indoor air outlet and a first indoor air inlet; the outdoor air inlet and the first indoor air inlet are in communication with the electronic filter through a first air duct; the air outlet of the electronic filter is in communication with the air inlet of the first fan; the air outlet of the first fan is in communication with the air inlet of the electrostatic precipitator through a second air duct; the air outlet of the electrostatic precipitator is in communication with the air inlet of the second fan; the air inlet of the second fan is in communication with the indoor air outlet through a third air duct, and a carbon bag is arranged in the third air duct; the first fan and the second fan are used to drive air to flow in from the outdoor air inlet or the first indoor air inlet and to flow out from the indoor air outlet; the outdoor air inlet is provided with a first air valve, and the first indoor air inlet is provided with a second air valve; wherein air flows into the electronic filter from the outdoor air inlet or the first indoor air inlet, the high-voltage generator supplies power to the ion generator to make the ion generator discharge to purify the air; the ion generator comprises a hollow electrode column, a ground electrode column, a support structure, a first electrode belt and a second electrode belt; the ground electrode column is fixed to the central axis position of the hollow electrode column through the support structure; the first electrode belt is distributed on the outer wall of the hollow electrode column, and the second electrode belt is distributed on the inner wall of the hollow electrode column; the first electrode belt comprises a plurality of first sharp-end electrodes pointing to the outside of the hollow electrode column, and the second electrode belt comprises a plurality of second sharp-end electrodes pointing to the inside of the hollow electrode column; the high-voltage generator is electrically connected to the hollow electrode column; wherein, after air flows into the electronic filter, power is supplied to the hollow electrode column to make the first sharp-end electrodes discharge to purify the air flowing through the outer wall of the hollow electrode column, and to make the second sharp-end electrodes discharge to purify the air flowing through the inner wall of the hollow electrode column; the first electrode belt is distributed on the outer wall of the hollow electrode column in a spiral direction, and the second electrode belt is distributed on the inner wall of the hollow electrode column in a spiral direction; the spiral directions of the first electrode belt and the second electrode belt are the same. Alternatively, the ion generator comprises: a hollow electrode column, a ground electrode column, a support structure; the hollow electrode column is curled from a parallelogram conductive plate; the ground electrode column is fixed to the central axis position of the hollow electrode column through the support structure; a plurality of electrode regions parallel to each other are arranged on the side wall of the hollow electrode column; the electrode regions include a plurality of first sharp electrodes and a plurality of second sharp electrodes integrally formed with the hollow electrode column; the first sharp electrodes are bent towards the outer wall of the hollow electrode column, and the second sharp electrodes are bent towards the inner wall of the hollow electrode column; the high-voltage generator is electrically connected with the hollow electrode column; wherein after the air flows into the electronic filter, power is supplied to the hollow electrode column, so that the first sharp electrodes discharge to purify the air flowing through the outer wall of the hollow electrode column, and the second sharp electrodes discharge to purify the air flowing through the inner wall of the hollow electrode column; The fresh air machine further comprises: a heat exchanger and a third fan; the heat exchanger is provided with a first air inlet, a first air outlet, a second air inlet and a second air outlet; the shell is further provided with a second indoor air inlet and an outdoor air outlet; the first air inlet is in communication with the outdoor air inlet and the first indoor air inlet through the first air duct; the first air outlet is in communication with the air inlet of the electronic filter; the second air inlet is in communication with the second indoor air inlet; the second air outlet is in communication with the air inlet of the third fan through the fourth air duct; the air outlet of the third fan is in communication with the outdoor air outlet; the third fan is used to drive air to flow into the second indoor air inlet and flow out of the outdoor air outlet; wherein outdoor air flows into the outdoor air inlet, passes through the heat exchanger into the electronic filter, while indoor air flows into the second indoor air inlet, passes through the heat exchanger into the fourth air duct and flows into the outdoor from the outdoor air outlet; The first air duct, the second air duct, the third air duct and the fourth air duct are integrally formed EPP air ducts made of polypropylene plastic; the electronic filter, the high-voltage generator, the first fan, the electrostatic adsorber, the second fan and the heat exchanger are all carried on the EPP air ducts.

2. The fresh air machine according to claim 1, wherein, The connecting line between adjacent first sharp electrodes is a spiral line, and has a first inclination angle with the horizontal plane, the first inclination angle being any angle in the range of 3° to 45°; The connecting line between adjacent second sharp electrodes is a spiral line, and has a second inclination angle with the horizontal plane, the second inclination angle being any angle in the range of 3° to 45°.

3. The fresh air machine of claim 1, wherein, The electrode regions have an inclination angle with the horizontal plane.

4. The fresh air machine of claim 3, wherein, The inclination angle is any angle in the range of 3° to 45°.

5. The fresh air machine of claim 1, wherein, The tip shape of the first sharp electrodes and the second sharp electrodes is a triangle, and the top angle is not greater than 45°.

6. An air purification method applied to the fresh air machine according to any one of claims 1 to 5, characterized in that, The method comprises: starting the first fan and the second fan, and detecting indoor air quality; In the case that the concentration of indoor gas pollutants reaches the first preset value, the first air valve is opened, the second air valve is closed, and the high-voltage generator is controlled to supply power to the ion generator in the electronic filter; Wherein, after the air flows into the electronic filter, the hollow electrode column is powered to make the first tip electrode discharge to purify the air flowing through the outer wall of the hollow electrode column, and make the second tip electrode discharge to purify the air flowing through the inner wall of the hollow electrode column; The first electrode band is distributed in the spiral direction on the outer wall of the hollow electrode column, and the second electrode band is distributed in the spiral direction on the inner wall of the hollow electrode column; The spiral direction of the first electrode band and the second electrode band is the same; Or, after the air flows into the electronic filter, the hollow electrode column is powered to make the first tip electrode discharge to purify the air flowing through the outer wall of the hollow electrode column, and make the second tip electrode discharge to purify the air flowing through the inner wall of the hollow electrode column; In the case that the concentration of indoor solid pollutants reaches the second preset value, the second air valve is opened, the first air valve is closed, and the high-voltage generator is controlled to supply power to the ion generator in the electronic filter; Outdoor air flows from the outdoor air inlet, passes through the heat exchanger into the electronic filter, while indoor air flows from the second indoor air inlet, passes through the heat exchanger into the fourth air duct and flows into the outdoor from the outdoor air outlet. In the case that the first air valve is opened and the second air valve is closed, the method further comprises: starting the third fan, and heat exchanging the air flowing from the outdoor air inlet and the air flowing from the second indoor air inlet through the heat exchanger.

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