CN216879839U - Dust collecting polar plate and air purifying device - Google Patents

Abstract

The utility model relates to a dust collecting polar plate and an air purifying device, wherein the air purifying device comprises: the discharging module is used for discharging to charge particles in the air; the dust collection and sterilization module is positioned at the downstream of the air flowing through the discharge module. The air purification device has a dust collection mode and a sterilization mode, when the dust collection mode is used, the discharge module discharges electricity, air around the discharge module is ionized to charge particles in the air, then the air carries the charged particles to flow to a downstream dust collection polar plate, and the dust collection polar plate is controlled to adsorb the charged particles, so that the particles in the air are collected on the dust collection polar plate. When the sterilization mode, the module that discharges closes, collection dirt polar plate self carries out the little sterilization that discharges, utilizes the high energy plasma that the little discharge produced to carry out the sculpture to the bacterium virus, plays the effect of killing bacteria and virus on the collection dirt polar plate, when preventing later dismantlement collection dirt polar plate and clean, user secondary infection bacterium virus.

Description

Dust collecting polar plate and air purifying device

Technical Field

The utility model relates to the technical field of dust collection, in particular to a dust collecting polar plate and an air purification device.

Background

Along with the higher and higher requirements of people on air quality, the air purifier gradually comes into the market. Nowadays, the air purifier market is mainly divided into three types of products, namely filtering type, electric purification and composite type, wherein the purifier which is more efficient in sterilization and also needs to count the electric purification principle can filter and sterilize microorganisms and viruses in air through discharging.

At present, no matter the clarifier that purifies air is carried out to electric purification static principle or filter screen physical adsorption principle all has a pain point problem, and traditional air purifier still can adsorb the bacterial virus who gets rid of in the air, nevertheless finally all makes the bacterial virus in the air collect on filter screen and dust collecting plate surface, can cause follow-up user to have the risk of secondary infection bacterial virus when retrieving the filter screen or rinsing the dust collecting plate like this.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an air purifying device and a dust collecting plate for solving the problem that the conventional air purifier may subsequently bring the risk of secondary infection of bacteria and viruses to users.

An air purification device, comprising:

a power supply module:

the discharging module is used for discharging to charge particles in the air;

a dust collection and sterilization module located downstream of the air flowing through the discharge module;

wherein the air purification device has a dust collection mode and a sterilization mode; in the dust collection mode, the power supply module controls the discharge module to discharge, and the dust collection and sterilization module adsorbs charged particles; and in the sterilization mode, the power supply module controls the dust collection sterilization module to perform micro-discharge sterilization.

The dust collecting and sterilizing module in the air purifying device comprises a dust collecting polar plate, and the dust collecting polar plate is positioned at the downstream of the discharging module. The air purification device is provided with a dust collection module and a sterilization mode; in the dust collection mode, the power supply module controls the discharge module to discharge so as to ionize air around the discharge module to charge particles in the air, then the air carries the charged particles to flow to a downstream dust collection polar plate, and the dust collection polar plate adsorbs and collects the charged particles, so that the particles in the air are collected on the dust collection polar plate to purify the air. In the sterilization mode, the power supply module controls the dust collecting polar plate to perform micro-discharge sterilization, and high-energy plasma generated by micro-discharge is used for etching bacteria and viruses, so that the sterilization effect on the bacteria and the viruses on the dust collecting polar plate is achieved. When the user is using air purification device, if start the collection dirt mode and need clean the collection dirt polar plate for a period of time, can start the mode of disinfecting earlier, make air purification device stop to collect dirt and disinfect to the collection dirt polar plate, later dismantle the collection dirt polar plate again and clean, prevent user's secondary infection bacterial virus in the cleaning process.

In one embodiment, the dust collecting and sterilizing module comprises at least one dust collecting plate; in the purification mode, the dust collecting polar plate is controlled to adsorb charged particles; in the purification mode, the dust collecting polar plate performs micro-discharge sterilization.

In one embodiment, each dust collecting polar plate comprises a first metal piece, a sterilizing piece and a second metal piece, wherein the sterilizing piece is laminated between the first metal piece and the second metal piece;

at least one of the first and second metallic pieces is controlled to adsorb charged particles in the dust collection mode;

in the sterilization mode, a potential difference exists between the first metal piece and the second metal piece, one of high potentials in the first metal piece and the second metal piece is subjected to corona discharge towards one of low potentials, and micro-discharge of the sterilization piece is induced.

In one embodiment, the power module comprises a controller and a power supply in communication connection with the controller;

in the dust collection mode, the controller controls one of the positive and negative electrodes of the power supply to be electrically connected with the discharge module, and controls the other of the positive and negative electrodes of the power supply to be electrically connected with the first metal piece and/or the second metal piece;

and in the sterilization mode, the controller controls the positive electrode and the negative electrode of the power supply to be electrically connected with the first metal piece and the second metal piece respectively.

In one embodiment, the first metal piece and the second metal piece are both metal nets, and the sterilizing piece is made of porous electret materials.

In one embodiment, when the air purification device is in the dust collection mode, the discharge module discharges under pressure, and the first metal piece and the second metal piece are both grounded.

In one embodiment, the dust collecting and sterilizing module comprises a plurality of dust collecting plates which are arranged side by side at intervals along a direction intersecting with the air flowing direction.

In one embodiment, the dust collecting and sterilizing module further comprises an auxiliary polar plate, and the auxiliary polar plate is arranged opposite to any dust collecting polar plate at intervals;

and in the dust collection mode, a dust collection electric field is formed between the auxiliary polar plate and the dust collection polar plate adjacent to the auxiliary polar plate, and the dust collection electric field drives charged particles to move towards the dust collection polar plate.

In one embodiment, in the dust collection mode, the discharge module discharges to positively charge particles in the air, the auxiliary plate is at a high potential, and the dust collection plate is at a low potential; or

In the dust collection mode, the discharge module discharges to enable particles in the air to be charged negatively, the auxiliary pole plate is at a low potential, and the dust collection pole plate is at a high potential.

A dust collecting polar plate comprises a first metal piece, a second metal piece and a sterilizing piece, wherein the sterilizing piece is arranged between the first metal piece and the second metal piece in a stacked mode;

at least one of the first metal piece and the second metal piece adsorbs charged particles in the air, or a potential difference is formed between the first metal piece and the second metal piece, and one of high potentials in the first metal piece and the second metal piece discharges to one of low potentials in the first metal piece and the second metal piece in a corona mode, so that micro-discharge of the sterilizing piece is induced.

In one embodiment, the first metal piece and the second metal piece are metal nets, and the sterilizing piece is made of porous electret materials.

Drawings

FIG. 1 is a schematic view of an air purification apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the air purification apparatus shown in FIG. 1 from another perspective;

FIG. 3 is a schematic view showing the structure of a dust collecting electrode in the air cleaning apparatus shown in FIG. 1;

FIG. 4 is a schematic structural diagram of an air purification apparatus according to another embodiment of the present invention.

Reference numerals: 100. an air purification device; 10. a discharge module; 11. a tungsten filament; 30. a dust collecting and sterilizing module; 32. a dust collecting polar plate; 321. a first metal member; 323. a sterilizing element; 325. a second metal piece; 34. an auxiliary pole plate; 40. a power supply module; 50. a power source; 61. a first conductive line; 63. a second conductive line; 65. and a third conductive line.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 3, an embodiment of the present invention provides an air purification apparatus 100, including a discharging module 10, a dust collecting and sterilizing module 30 and a power module 40, wherein the discharging module 10 is used for discharging electricity to charge particles in air, the dust collecting and sterilizing module 30 is used for collecting charged particles in air and controlling to sterilize itself, and the sterilizing module does not carry bacteria and viruses during subsequent cleaning of the dust collecting and sterilizing module 30, thereby preventing a user from being infected secondarily. Optionally, the discharge module 10 includes a plurality of tungsten wires 11, and the tungsten wires 11 are energized by high voltage to discharge electricity at the tip and ionize the air, so that charged particles are generated in the air, and the charged particles are combined with particles in the air to charge the particles.

Specifically, the dust collection and sterilization module 30 is located downstream of the air flowing through the discharge module 10. Also, the air cleaning apparatus 100 has a dust collection mode and a sterilization mode; in the dust collection mode, the power module 40 controls the discharge module 10 to discharge, the air around the discharge module 10 is ionized to charge the particles in the air, and then the air carries the charged particles to the downstream dust collection and sterilization module 30, and the dust collection and sterilization module 30 is controlled to adsorb the charged particles, so that the particles in the air are collected on the dust collection and sterilization module 30 to purify the air. In the sterilization mode, the power module 40 controls the dust-collecting and sterilizing module 30 to perform micro-discharge sterilization, and uses high-energy plasma generated by micro-discharge to etch bacteria and viruses, thereby achieving sterilization and killing effects on the bacteria and viruses on the dust-collecting and sterilizing module 30. When the user uses the air purification device 100, if the dust collection and sterilization module 30 needs to be cleaned for a period of time in the dust collection mode, the sterilization mode can be started first, so that the air purification device 100 stops collecting dust and sterilizes the dust collection and sterilization module 30, and then the dust collection and sterilization module 30 is detached for cleaning, thereby preventing the user from being infected with bacteria and viruses for the second time in the cleaning process.

In some embodiments, when the air purification apparatus 100 is in the sterilization mode, the dust-collecting and sterilizing module 30 is activated by the corona discharge to induce the micro-discharge, so that the dust-collecting and sterilizing module 30 not only sterilizes the air by the micro-discharge, but also ionizes the air when the corona discharge is activated to generate active groups such as hydroxyl groups in the air, so as to destroy bacteria and viruses on the dust-collecting and sterilizing module 30 to inactivate them, i.e., to sterilize and sterilize them by ionizing the air.

In some embodiments, the dust collection and sterilization module 30 includes at least one dust collection plate 32, the dust collection plate 32 being controlled to adsorb charged particles during the cleaning mode; in the cleaning mode, the dust collecting plate 32 itself is sterilized by micro-discharge. Equivalently, the dust collecting and sterilizing module 30 includes a plurality of dust collecting plates 32, and dust collection and sterilization are performed by the dust collecting plates 32.

Furthermore, each dust collecting plate 32 includes a first metal member 321, a sterilizing member 323, and a second metal member 325, and the sterilizing member 323 is stacked between the first metal member 321 and the second metal member 325, which is equivalent to the first metal member 321, the sterilizing member 323, and the second metal member 325 being sequentially stacked. In the dust collection mode, the discharge module 10 charges particles in the air, at least one of the first metal part 321 and the second metal part 325 is controlled to adsorb the charged particles to collect particles such as dust, bacteria, viruses, and the like in the air, and the first metal part 321 and the second metal part 325 are both arranged to sterilize the particles, so that the dust collection area can be increased, and the dust collection effect can be improved.

In the sterilization mode, a potential difference exists between the first metal part 321 and the second metal part 325, and one of the high potential and the low potential in the two parts is corona-discharged, and micro-discharge of the sterilization part 323 is induced. One of the first metal part 321 and the second metal part 325 is supplied with a low voltage (e.g., grounded) to be a low potential, and the other of the first metal part 321 and the second metal part 325 is supplied with a high voltage to be a high potential and is charged with a high voltage. In this way, when one of the first metal member 321 and the second metal member 325 is electrified and then corona-discharged to the other, charges are induced on the sterilizing member 323 located between the first metal member 321 and the second metal member 325, and the charges are accumulated on the sterilizing member 323 during the corona discharge between the first metal member 321 and the second metal member 325, and a micro-discharge phenomenon is induced, so as to sterilize bacteria and viruses on the whole dust collecting electrode plate 32.

Further, the first metal member 321 and the second metal member 325 are both metal nets, and the sterilizing member 323 is made of a porous electret material. The first metal member 321 and the second metal member 325 are both constructed as metal nets, and since the metal nets are woven by a metal wire with a very small curvature radius, the corona discharge occurs by breaking through the air with high voltage, therefore, when a high voltage is applied to one of the first metal member 321 and the second metal member 325, it is equivalent to that one metal mesh is subjected to corona discharge to the other metal mesh through the sterilizing member 323, and at this time, charges are induced in the sterilizing member 323 located between the two metal meshes, under the action of corona discharge, charges are accumulated on the surface of the porous electret material of the sterilization part 323, the accumulated charges form an electric field in the small-hole channel of the porous electret material, when the electric field intensity exceeds the breakdown field intensity of the small hole gap, micro discharge can be induced to occur in the insulating small hole, high-energy plasma is generated, the ion velocity in the high-energy plasma is extremely high, and bacteria and viruses can be etched and inactivated. Meanwhile, when the metal net is subjected to high-voltage corona discharge, active groups such as hydroxyl groups generated by ionized air can also destroy bacteria and viruses to inactivate the bacteria and viruses.

In some embodiments, the power module 40 includes a controller (not shown) and a power source 50 communicatively coupled to the controller. In the dust collection mode, the controller controls one of the positive and negative poles of the power supply 50 to be electrically connected to the discharge module, and controls the other of the positive and negative poles of the power supply 50 to be electrically connected to the first metal part 321 and/or the second metal part 325. Equivalently, the discharge module is powered on positively, and serves as an anode to charge particles in the air positively, and the positively charged particles move and are adsorbed on the first metal piece 321 and/or the second metal piece 325 serving as a cathode, so that the dust collection and sterilization module 30 adsorbs the particles, and the dust collection function is realized. Alternatively, the discharge module is charged negatively, and as a cathode, the particles in the air are charged negatively, and the negatively charged particles can move and be adsorbed onto the first metal part 321 and/or the second metal part 325 as an anode.

In the sterilization mode, the controller controls the positive and negative electrodes of the power supply 50 to be electrically connected to the first metal part 321 and the second metal part 325, so as to form a potential difference between the first metal part 321 and the second metal part 325 to induce micro-discharge of the sterilization part 323323, and energy generated by the micro-discharge etches particles such as bacteria and viruses collected on the first metal part 321 and the second metal part 325, thereby achieving a sterilization function.

Specifically, in one embodiment, when the air purification apparatus 100 is in the dust collection mode, the discharge module 10 discharges under pressure, and the first metal piece 321 and the second metal piece 325 are both grounded. Thus, if the discharge module 10 is applied with a positive high voltage to make the particles in the air to be positive, and the air carrying the charged particles flows from the discharge module 10 to the dust collecting electrode, the grounded first metal member 321 and the grounded second metal member 325 are equivalent to negative electrodes, and can adsorb the positively charged particles and collect the particles in the air. Conversely, when a negative high voltage is applied across the discharge module 10 to negatively charge the particles in the air, and the air carrying the charged particles flows from the discharge module 10 to the dust collecting electrode, the connected first metal member 321 and second metal member 325 correspond to a positive electrode, and can also adsorb the negatively charged particles and collect the particles in the air. It is understood that, in the dust collection mode, the first metal part 321 and the second metal part 325 may be set to other voltage values without being grounded, and may be set to be capable of adsorbing nuclear particles.

Further, the power module further includes a first wire 61, a second wire 63 and a third wire 65, the first wire 61 connects the power source 50 and the first metal element 321, the second wire 63 connects the power source 50 and the second metal element 325, and the third wire 65 connects the power source 50 and the discharge module 10. When there are a plurality of dust collecting plates 32, the first wire 61 connects the power source 50 to the plurality of first metal parts 321, and the second wire 63 connects the power source 50 to the plurality of second metal parts 325.

When the air purification device 100 is in the purification mode, the controller controls the power supply 50 to supply high voltage to the third wire 65, so that the high voltage is applied to the discharge module 10 to ionize the air, and particles in the air are charged; at the same time, the controller controls the power supply 50 to supply the same low voltage (typically, ground potential) to the first wire 61 and the second wire 63, for example, to ground the first wire 61 and the second wire 63, so that the dust collecting electrode can adsorb the charged particles in the air. When the air purification device 100 is in the sterilization mode, the controller controls the power supply 50 to stop supplying power to the third wire 65, and then turns off the discharging module 10; meanwhile, the controller controls the power supply 50 to provide a potential difference to the first wire 61 and the second wire 63, and applies a high voltage to one of the first metal part 321 and the second metal part 325 and a low voltage to the other, so that the high voltage of the first metal part 321 and the second metal part 325 is corona-discharged to the low voltage, and the micro-discharge of the sterilization part 323 is induced, and a high-energy plasma is generated for sterilization.

Referring to fig. 1-3, in some embodiments, the dust collecting and sterilizing module 30 includes a plurality of dust collecting plates 32, and the plurality of dust collecting plates 32 are arranged side by side at intervals along a direction intersecting with the air flowing direction, so that the plurality of dust collecting plates 32 are arranged in the dust collecting and sterilizing module 30, and the plurality of dust collecting plates 32 can be arranged to collect dust simultaneously, thereby improving the purification efficiency. It is understood that the dust collecting and sterilizing module 30 may only include one dust collecting plate 32, and the cleaning and sterilizing functions can be achieved, and the number of the dust collecting plates 32 is not limited herein.

Referring to fig. 4, in other embodiments, the dust collecting and sterilizing module 30 further includes an auxiliary plate 34, and the auxiliary plate 34 is disposed opposite to any dust collecting plate 32 at an interval; in the dust collecting mode, a dust collecting electric field is formed between the auxiliary plate 34 and the dust collecting plate 32 adjacent thereto, and when the air carrying the charged particles enters the dust collecting electric field, the dust collecting electric field drives the charged particles to move towards the dust collecting plate 32, thereby collecting the dust on the dust collecting plate 32. Similarly, in the sterilization mode, the dust collecting electrode plate 32 may be sterilized by causing micro-discharge. Thus, the secondary infection of the user with bacteria and viruses is prevented when the dust collecting plate 32 is subsequently cleaned. The auxiliary electrode plate 34 is a metal electrode plate.

Optionally, the dust collecting and sterilizing module 30 includes a plurality of dust collecting plates 32 and a plurality of auxiliary plates 34, the plurality of dust collecting plates 32 and the plurality of auxiliary plates 34 are arranged side by side in a staggered manner, each dust collecting plate 32 is located between two auxiliary plates 34, and each dust collecting plate 32 and two auxiliary plates 34 on two sides form two dust collecting electric fields respectively, so as to improve the dust collecting effect. It will be appreciated that the dust collecting plate 32 and the subsidiary plate 34 may be provided as one plate, and the number of the two plates is not limited herein.

Further, in the dust collecting mode, the discharging module 10 discharges to positively charge the particles in the air, the auxiliary plate 34 is at a high potential, and the dust collecting plate 32 is at a low potential, so that when the positively charged particles enter the dust collecting electric field, the positively charged particles move toward the dust collecting plate 32 as the cathode plate under the action of the electric field force and are adsorbed and collected by the dust collecting plate 32, thereby realizing the dust collecting function. Or, in the dust collection mode, the discharge module 10 discharges to make the particles in the air negatively charged, the auxiliary electrode plate 34 presents a low potential, and the dust collection electrode plate 32 presents a high potential, so that after the negatively charged particles carried by the air enter the dust collection electric field, the negatively charged particles move to the base electrode plate as the anode plate under the action of the electric field force, and are adsorbed and collected by the dust collection electrode plate 32, thereby realizing the dust collection function.

Based on the same conception, an embodiment of the present invention further provides the dust collecting polar plate 32, wherein the dust collecting polar plate 32 includes a first metal part 321, a sterilizing part 323, and a second metal part 325, and the sterilizing part 323 is stacked between the first metal part 321 and the second metal part 325, which is equivalent to that the first metal part 321, the sterilizing part 323, and the second metal part 325 are sequentially stacked. At least one of the first metal piece 321 and the second metal piece 325 adsorbs charged particles; or a potential difference is formed between the first metal part 321 and the second metal part 325, and one of the high potential and the low potential is corona-discharged, and micro-discharge of the sterilizing part 323 is induced.

In the dust collection mode, the discharge module 10 charges particles in the air, and at least one of the first metal part 321 and the second metal part 325 adsorbs the charged particles to collect particles such as dust, bacteria, viruses, and the like in the air, thereby achieving a dust collection effect. Optionally, the first metal part 321 and the second metal part 325 both adsorb charged particles, so as to increase a dust collecting area and improve a dust collecting effect.

In the sterilization mode, a potential difference exists between the first metal part 321 and the second metal part 325, and one of the high potential and the low potential in the two parts is corona-discharged, and micro-discharge of the sterilization part 323 is induced. One of the first metal part 321 and the second metal part 325 is supplied with a low voltage (e.g., grounded) to be a low potential, and the other of the first metal part 321 and the second metal part 325 is supplied with a high voltage to be a high potential and is charged with a high voltage. In this way, when one of the first metal member 321 and the second metal member 325 is electrified and then corona-discharged to the other, charges are induced on the sterilizing member 323 located between the first metal member 321 and the second metal member 325, and the charges are accumulated on the sterilizing member 323 in the corona discharge process between the first metal member 321 and the second metal member, and a micro-discharge phenomenon is induced, so as to sterilize bacteria and viruses on the whole dust collecting electrode plate 32.

Further, the first metal member 321 and the second metal member 325 are both metal nets, and the sterilizing member 323 is made of a porous electret material. The first metal part 321 and the second metal part 325 are both constructed as metal nets, and since the metal nets are woven by a metal wire with a very small curvature radius, the air is punctured by the high voltage to generate corona discharge, therefore, when a high voltage is applied to one of the first metal member 321 and the second metal member 325, it is equivalent to that one metal mesh is subjected to corona discharge to the other metal mesh through the sterilizing member 323, and at this time, charges are induced in the sterilizing member 323 located between the two metal meshes, electric charges are accumulated on the surface of the porous electret material of the sterilizing member 323 under the action of corona discharge, the accumulated electric charges form an electric field in the small pore channel of the porous electret material, when the electric field intensity exceeds the breakdown field intensity of the small hole gap, micro discharge can be induced to occur in the insulating small hole, high-energy plasma is generated, the ion velocity in the high-energy plasma is extremely high, and bacteria and viruses can be etched and inactivated. Meanwhile, when the metal net is subjected to high-voltage corona discharge, active groups such as hydroxyl groups generated by ionized air can also destroy bacteria and viruses to inactivate the bacteria and viruses.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (11)

1. An air purification apparatus, characterized in that the air purification apparatus comprises:

a power supply module;

a discharge module (10) for discharging to charge particles in air;

a dust collection and sterilization module (30) located downstream of the air flowing through the discharge module (10);

wherein the air purification device has a dust collection mode and a sterilization mode; in the dust collection mode, the power supply module controls the discharge module (10) to discharge, and the dust collection and sterilization module (30) adsorbs charged particles; and in the sterilization mode, the power supply module controls the dust collection sterilization module (30) to perform micro-discharge sterilization.

2. Air cleaning device according to claim 1, characterized in that the dust collecting and sterilizing module (30) comprises at least one dust collecting plate;

in the dust collection mode, the dust collection polar plate is controlled to adsorb charged particles; in the sterilization mode, the dust collecting pole plate performs micro-discharge sterilization.

3. The air purification apparatus according to claim 2, wherein each dust collecting plate comprises a first metal member (321), a sterilizing member (323) and a second metal member (325), wherein the sterilizing member (323) is laminated between the first metal member (321) and the second metal member (325);

at least one of the first metal piece (321) and the second metal piece (325) is controlled to adsorb charged particles in the dust collection mode;

in the sterilization mode, a potential difference exists between the first metal piece (321) and the second metal piece (325), and one of high potential and low potential in the two pieces is subjected to corona discharge to induce micro discharge of the sterilization piece (323).

4. The air purification device of claim 3, wherein the power module comprises a controller and a power source in communication connection with the controller;

in the dust collection mode, the controller controls one of the positive and negative poles of the power supply to be electrically connected with the discharge module, and controls the other of the positive and negative poles of the power supply to be electrically connected with the first metal piece and/or the second metal piece;

and in the sterilization mode, the controller controls the positive electrode and the negative electrode of the power supply to be electrically connected with the first metal piece and the second metal piece respectively.

5. An air cleaning device according to claim 3, characterized in that the first metal element (321) and the second metal element (325) are both metal meshes, and the sterilizing element (323) is made of porous electret material.

6. The air cleaning device according to claim 4, wherein when the air cleaning device is in the dust collection mode, the discharge module (10) discharges under pressure, and the first metal piece (321) and the second metal piece (325) are both grounded.

7. The air cleaning device according to any one of claims 2-6, wherein the dust collecting and sterilizing module (30) comprises a plurality of dust collecting plates, and the dust collecting plates are arranged side by side at intervals along a direction intersecting with the air flow direction.

8. The air cleaning device according to any one of claims 2-5, wherein the dust collecting and sterilizing module (30) further comprises an auxiliary pole plate (34), and the auxiliary pole plate (34) is arranged opposite to any one of the dust collecting pole plates at a spacing;

in the dust collection mode, a dust collection electric field is formed between the auxiliary polar plate (34) and the dust collection polar plate adjacent to the auxiliary polar plate, and the dust collection electric field drives charged particles to move towards the dust collection polar plate.

9. The air cleaning apparatus according to claim 8, wherein in the dust collection mode, the discharge module (10) discharges to positively charge particles in the air, the auxiliary plate (34) is at a high potential, and the dust collection plate is at a low potential; or

In the dust collection mode, the discharge module (10) discharges to negatively charge particles in the air, the auxiliary pole plate (34) is at a low potential, and the dust collection pole plate is at a high potential.

10. The dust collecting polar plate is characterized by comprising a first metal piece (321), a second metal piece (325) and a sterilizing piece (323), wherein the sterilizing piece (323) is arranged between the first metal piece (321) and the second metal piece (325) in a laminated manner;

at least one of the first metal piece (321) and the second metal piece (325) adsorbs charged particles in the air, or a potential difference is formed between the first metal piece (321) and the second metal piece (325), and one of the high potential and the low potential is subjected to corona discharge to induce micro-discharge of the sterilizing piece (323).

11. The collecting plate according to claim 10, wherein the first metal piece (321) and the second metal piece (325) are metal meshes, and the sterilizing piece (323) is made of a porous electret material.

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