CN117563773A

CN117563773A - Electrostatic air purifier

Info

Publication number: CN117563773A
Application number: CN202311447212.XA
Authority: CN
Inventors: 蒋晓峰; 曾焕雄; 谭卓杰; 陈锦沛; 邓任飞
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2023-11-01
Filing date: 2023-11-01
Publication date: 2024-02-20

Abstract

The invention relates to an electrostatic air purifier, belongs to the technical field of air purification, and solves the technical problem that the existing electrostatic air purifier is poor in air purification efficiency. The electrostatic air purifier comprises a dust collection housing which is electrically connected with one electrode of a high-voltage generator and is provided with an air inlet and an air outlet; the net cage structure is arranged in the dust collection housing and is electrically connected with the other electrode of the high-voltage generator, and an air outlet channel communicated with the air outlet is formed between the net cage structure and the dust collection housing; the corona generating poles are connected to the net cage structure and are electrically connected with the net cage structure; and the air supply assembly is connected to the dust collection housing and positioned at the inner side of the net cage structure, and is used for sucking air to be purified from the air inlet and blowing the air to the corona generating electrode. Through the structure, the electrostatic air purifier has better air purifying effect and higher purifying efficiency.

Description

Electrostatic air purifier

Technical Field

The invention belongs to the technical field of air purification, and particularly relates to an electrostatic air purifier.

Background

The existing air purifiers can be divided into a filter screen type and an electrostatic type, wherein the filter screen type purifier relies on a filter screen to filter large-particle dust in air, but cannot filter dust with small particle size, and the electrostatic type purifier relies on a corona principle to enable dust particles in air to be charged, and can capture and collect the large-particle dust and the small-particle dust in the air, so that the air is purified.

However, the electrostatic air purifier in the prior art only relies on the attractive force between the positive and negative charges to capture the dust particles in the air on the dust collecting component, that is, when the dust particles move from the air to the dust collecting component, only the attractive force between the positive and negative charges works on the dust particles, so that the speed of the dust particles moving to the dust collecting component is slower, and if the air flowing speed is higher, the dust particles which do not move to the dust collecting component are easily taken away. Therefore, the air purifying efficiency of the existing electrostatic air purifier is further improved.

Disclosure of Invention

The invention provides an electrostatic air purifier which is used for improving the air purifying efficiency of the existing electrostatic air purifier.

The invention is realized by the following technical scheme: an electrostatic air purifier, comprising:

the dust collecting housing is electrically connected with one electrode of the high-voltage generator and is provided with an air inlet and an air outlet;

the net cage structure is arranged in the dust collection housing and is electrically connected with the other electrode of the high-voltage generator, and an air outlet channel communicated with the air outlet is formed between the net cage structure and the dust collection housing;

the corona generating poles are connected to the net cage structure and are electrically connected with the net cage structure;

the air supply assembly is connected to the dust collection housing and located on the inner side of the net cage structure, and is used for sucking air to be purified from the air inlet and blowing the air to the corona generating electrode.

Further, in order to better implement the present invention, the netpen structure includes:

the support rod is connected with the dust collection housing;

the supporting rings are fixedly connected to the supporting rods and are electrically connected with the supporting rods, the axial directions of the supporting rings are parallel to the length direction of the supporting rods, the supporting rings are coaxially arranged, and each supporting ring is provided with a plurality of corona generating poles.

Further, in order to better implement the present invention, the distance between each support ring and the air outlet is different.

Further, in order to better realize the invention, a gap for air supply to pass through is formed between two adjacent supporting rings;

at least one tip part is arranged on the outer wall of the corona generating electrode, and the tip part extends into the corresponding gap.

Further, in order to better realize the invention, the supporting ring is wrapped with a first insulating layer, and the corona generating electrode is positioned outside the first insulating layer;

the support rod is wrapped with a second insulating layer.

Further, in order to better implement the present invention, the dust collection housing includes:

the inner wall of the columnar shell is smooth, the columnar shell is electrically connected with one electrode of the high-voltage generator, and the air inlet and the air outlet are respectively arranged at two ends of the columnar shell;

the insulating installation rod is fixedly connected to one end of the columnar shell and is positioned in the columnar shell;

the support rod is connected with the insulating mounting rod, and the support ring is coaxial with the columnar shell.

Further, in order to better realize the invention, the columnar housing is wrapped with a third insulating layer.

Further, in order to better implement the present invention, the dust collection housing further includes:

the gas collecting hood is connected to the columnar shell and located outside the columnar shell, and corresponds to and is communicated with the air inlet.

the filter screen is arranged in the air inlet and/or the gas collecting hood.

Further, in order to better realize the invention, two ends of the columnar shell are respectively a first end and a second end, the air inlet and the air outlet are respectively arranged at the first end and the second end, and the insulating mounting rod is fixedly connected to the first end;

the air supply assembly comprises a motor and a cross-flow fan blade, the motor is mounted on the inner wall of the second end, the cross-flow fan blade is inserted into the supporting ring, and the motor is connected with the cross-flow fan blade so as to drive the cross-flow fan blade to rotate in the supporting ring, suck air to be purified from the air inlet and blow the air to the corona generating electrode.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides an electrostatic air purifier which comprises a dust collecting housing, a net cage structure and an air supply assembly, wherein the net cage structure is arranged in the dust collecting housing, the dust collecting housing is provided with an air inlet and an air outlet, the air supply assembly is also connected with the dust collecting housing and is positioned at the inner side of the net cage structure, the dust collecting housing and the net cage structure are respectively and electrically connected with two electrodes of a high-voltage generator, and a plurality of corona generating electrodes are also connected with the net cage structure, so that the corona generating electrodes are electrically connected with the high-voltage generator, and the air supply assembly is used for sucking air to be purified from the air inlet and blowing the air to the corona generating electrodes. And an air outlet channel is formed between the net cage structure and the dust collection housing, and the air outlet channel corresponds to and is communicated with the air outlet.

When the high-voltage generator operates, the corona generating electrode discharges to ionize air around the corona generating electrode, when the air supply assembly blows air to be purified to the corona generating electrode, high-energy electrons generated near the corona generating electrode collide with air molecules to generate high-concentration ion groups, and because the air supply assembly continuously supplies air, the air enters the air outlet channel after passing through the mesh cage structure, ion storm formed by high-energy electrons and air can be formed in the air outlet channel, so that dust particles in the air are charged, and the dust particles are adsorbed by the inner wall of the dust collecting housing with the same charge. In addition, since the air supply assembly is positioned at the inner side of the net cage structure, and the net cage structure is positioned at the inner side of the dust collection housing, dust particles in the air are blown by the ion storm and pushed to the inner wall of the dust collection housing under the condition that the air supply assembly continuously supplies air.

In summary, the electrostatic air purifier provided by the invention not only relies on the fact that dust particles in air are charged and adsorbed on the inner wall of the dust collection housing, but also pushes the dust particles in the air to the inner wall of the dust collection housing by means of the pushing force generated by continuous air supply of the air supply assembly. Meanwhile, a large amount of high-energy high-concentration ion storm can break down the molecular chemical bonds of polluted gas in the air and push the polluted gas to the inner wall of the dust collection housing, so that the electrostatic air purifier can remove various harmful gases such as TVOC, peculiar smell, formaldehyde and the like.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an electrostatic air purifier according to an embodiment of the present invention (arrows in the figure indicate air flowing directions);

FIG. 2 is a schematic view of a corona generating electrode and mounting structure of a first insulating layer on a support ring in an embodiment of the present invention;

fig. 3 is a schematic view of a mounting structure of a second insulating layer in an embodiment of the present invention.

In the figure:

1, a dust collection housing; 11-a cylindrical housing; 12-insulating mounting bars; 13-a gas collecting hood;

2-a high voltage generator;

3-net cage structure; 31-supporting rods; 32-a support ring; 33-a first insulating layer; 34-a second insulating layer;

4-an air outlet channel;

5-a corona generating electrode; 51-tip portion;

6-a motor;

7-cross flow fan blades.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.

Example 1:

as shown in fig. 1 to 3, the electrostatic air purifier provided by the invention comprises a dust collection housing 1, a netpen structure 3 and an air supply assembly, wherein:

the netpen structure 3 is mounted in a dust collection housing 1, which dust collection housing 1 is provided with an air inlet and an air outlet (not shown in the figure), and an air supply assembly is also connected to the dust collection housing 1 and located inside the netpen structure 3. Thus, the electrostatic air purifier comprises the air supply assembly, the net cage structure 3 and the dust collection housing 1 which are sequentially arranged from inside to outside. An air outlet channel 4 is formed between the net cage structure 3 and the dust collection housing 1, and the air outlet channel 4 corresponds to and communicates with the air outlet.

The dust-collecting housing 1 and the netpen structure 3 are electrically connected to two electrodes of the high voltage generator 2, respectively, specifically, the dust-collecting housing 1 is electrically connected to a low voltage electrode of the high voltage generator, and the netpen structure 3 is electrically connected to a high voltage electrode of the high voltage generator 2. Alternatively, the high voltage generator 2 in the present embodiment may be a negative voltage dc battery.

A plurality of corona generating poles 5 are also connected to the net cage structure 3, so all the corona generating poles 5 are electrically connected with the high voltage generator 2. When the high voltage generator 2 is in operation, the corona generating electrode 5 can discharge to ionize air around the corona generating electrode 5, so that high-energy electrons are generated around the corona generating electrode.

The air supply assembly is used for sucking air to be purified from the air inlet and blowing the air to the corona generating electrode 5.

When the high voltage generator 2 is operated, the corona generating electrodes 5 discharge to ionize the air around the corona generating electrodes 5, and when the air supply assembly blows the air to be purified to the corona generating electrodes 5, high-energy electrons generated near the corona generating electrodes 5 collide with air molecules, and as the number of the corona generating electrodes 5 is a plurality of, a high concentration ion group is generated in the air outlet channel 4 (note that, as the net cage structure 3 can pass through the air, the air blown out from the air supply assembly enters the air outlet channel 4 after passing through the net cage structure 3).

Because the air supply assembly continuously supplies air, the air enters the air outlet channel 4 after passing through the net cage structure 3, so that ion storm formed by high-energy electrons and air can be formed in the air outlet channel 4, dust particles in the air are charged, and are adsorbed by the inner wall of the dust collecting housing 1 with the same charge. Further, since the air blowing unit is located inside the netpen structure 3, and the netpen structure 3 is located inside the dust collection housing 1, dust particles in the air are pushed onto the inner wall of the dust collection housing 1 by the ion storm when the air blowing unit continuously blows air. The purified air is discharged from the air outlet.

In summary, the electrostatic air purifier provided by the invention can not only charge the dust particles in the air to adsorb the dust particles on the inner wall of the dust collection housing 1, but also push the dust particles in the air to the inner wall of the dust collection housing 1 by the thrust generated by the continuous air supply of the air supply assembly. In other words, when the electrostatic air purifier provided by the invention is used for purifying dust particles in air, two acting forces for driving the dust particles in the air to move to the inner wall of the dust collection housing 1 can be applied to the dust particles, one acting force is attractive between positive and negative charges, and the other acting force is the pushing force applied to the dust particles by the continuous air supply of the air supply assembly, so that the dust particles in the air can be captured by the dust collection housing 1 in a shorter time at a higher speed, and the effect of efficiently removing the dust particles in the air at a high flow rate can be achieved. Meanwhile, a large amount of high-energy high-concentration ion storm can break down the molecular chemical bonds of polluted gas in the air and push the polluted gas to the inner wall of the dust collection housing 1, so that the electrostatic air purifier can remove various harmful gases such as TVOC, peculiar smell, formaldehyde and the like.

Of course, other functional devices may be installed at the air outlet of the dust collection housing 1, thereby realizing different functions. For example, an air deflector is arranged at the air outlet to realize the function of air outlet guiding. For another example, a heating component is arranged at the air outlet to realize the function of heating the air outlet temperature. For another example, an ozone remover is installed at the air outlet, so that the purifier has no ozone emission in the use process. For another example, a silencing member is installed at the air outlet, so that the air outlet noise is reduced.

An alternative implementation of this embodiment is as follows: the above-mentioned cylinder mould structure 3 includes bracing piece 31 and holding ring 32, wherein:

the supporting rod 31 is a straight rod structure made of conductive metal material. The support bar 31 is connected to the dust collection housing 1, and the support bar 31 is located inside the dust collection housing 1. Alternatively, the number of the support rods 31 may be one or more, wherein one support rod 31 is electrically connected to the high voltage generator 2 via an electric wire.

The support ring 32 is an annular structure made of conductive metal material, and optionally, the support ring 32 in this embodiment is a circular ring, a rectangular ring, or an elliptical ring. The support ring 32 is welded or clamped to the support rod 31, and the axial direction of the support ring 32 is parallel to the longitudinal direction of the support rod 31. The number of the supporting rings 32 is several, the supporting rings 32 are uniformly distributed along the length direction of the supporting rod 31, and the supporting rings 32 are coaxially arranged. A plurality of the corona generating electrodes 5 are mounted on each of the support rings 32. Optionally, several corona generating poles 5 on each support ring 32 are evenly distributed. Alternatively, when the discharge voltage of the corona generating electrode 5 is lower than 10Kv, the spacing between adjacent two support rings 32 is 5cm or less.

Through above-mentioned structure, cylinder mould structure 3 in this embodiment is a cylindric cylinder mould, this cylinder mould structure 3 cover is in above-mentioned air supply subassembly for the peripheral round of air supply subassembly all is equipped with a plurality of ionization generation utmost point, and in the axial of cylinder mould structure 3, also be provided with a plurality of ionization generation utmost point in the periphery of above-mentioned air supply subassembly, and above-mentioned dust collection housing 1 then overlaps outside above-mentioned cylinder mould structure 3, so a plurality of ionization generation utmost point in the electrostatic air purifier that this embodiment provided surround above-mentioned air supply subassembly, corona generation extremely high 5 density settings can make discharge density rise, thereby purify the air that air supply subassembly blows out better.

More preferably, in this embodiment, the supporting rings 32 are distributed in sequence along the direction of the air outlet channel 4, that is, the distance between each supporting ring 32 and the air outlet is different. The wind blown from the air supply assembly passes through the netpen structure 3 and then enters the air outlet channel 4, one support ring 32 closest to the air outlet is defined as a tail end ring, and one support ring 32 at the upstream of the tail end ring is defined as a secondary tail end ring. It is easy to understand that the air passing through the tail end ring can only be charged by the corona generating electrode 5 on the tail end ring to be purified, and then enters the air outlet channel 4 and is discharged from the air outlet; the air passing through the tail end ring is charged by the corona generating electrode 5 on the tail end ring to enter the air outlet channel 4 after being purified once, and then flows to the air outlet along the air outlet channel 4 to be discharged, however, when the air flows to the corona generating electrode 5 passing through the tail end ring, the air is charged again by the corona generating electrode 5 of the tail end ring to realize secondary purification. It can be known by analogy that the more the air entering the air outlet channel 4 from the position far away from the air outlet, the more the charged purifying times are, so that most of the air is subjected to multiple charged purifying, and the air purifying efficiency of the electrostatic air purifier provided by the embodiment is further improved. In other words, most of the air can be in contact with the generated ion storm for a longer time, so that the effect of removing dust particles in the air is better.

As an alternative to this embodiment, a spiral rod body may be used as the supporting rings 32 in the netpen structure 3, and a plurality of the corona generating electrodes 5 may be uniformly distributed on the spiral rod body.

An alternative implementation of this embodiment is as follows: defining a gap between two adjacent support rings 32 through which air is supplied. Air from the air supply assembly can pass through the gap. At least one tip 51 is disposed on the outer wall of the corona generating electrode 5, and the tip 51 extends into the corresponding gap, for example, the tip 51 of the corona generating electrode 5 on one support ring 32 extends into the gap on one side or both sides of the support ring 32. The corona generating electrode 5 discharges through the tip portion 51, so a large amount of high-energy electrons are generated around the tip portion 51, the generated high-energy electrons are concentrated in the gap by the arrangement of the structure, when the wind blown out by the air supply assembly passes through the gap, the air can be fully contacted with the high-energy electrons, and most of the generated high-energy electrons are blown into the air outlet channel 4 to form an ion storm, so that the high-energy electron density in the formed ion storm can be improved.

Specifically, the corona generating electrode 5 is provided with two tip portions 51, and the two tip portions 51 extend into gaps on both sides thereof, respectively.

More preferably, in order to prevent abnormal discharge of the support ring 32 and the support rod 31, the support ring 32 in this embodiment is covered with a first insulating layer 33, the corona generating electrode 5 is located outside the first insulating layer 33, and the support rod 31 is covered with a second insulating layer 34. The first and second insulating layers 33 and 34 may insulate the support bar 31 and the support ring 32 from the air in the dust housing 1, so that the support ring 32 and the support bar 31 may not discharge even if dust particles exist outside the support bar 31 and outside the support ring 32. By means of the first insulating layer 33 and the second insulating layer 34, only the corona generating electrode 5 generates electricity in the electrostatic air purifier provided by the embodiment, so that the discharge energy of the corona generating electrode 5 is ensured.

An alternative implementation of this embodiment is as follows: the dust collection housing 1 described above includes a cylindrical housing 11 and an insulating mounting rod 12, in which:

the cylindrical housing 11 is a shell-like structure made of conductive metal and having a smooth inner wall, and the cylindrical housing 11 is electrically connected to the high voltage generator 2 through a wire, thereby conveniently capturing charged dust particles. Alternatively, the outline shape of the columnar housing 11 in the present embodiment is cylindrical.

The insulating mounting rod 12 is a straight rod made of an insulating material (e.g., hard plastic), the insulating mounting rod 12 is fixed to one end of the cylindrical housing 11 by bonding or screwing, the insulating mounting rod 12 is located inside the cylindrical housing 11, and the length direction of the insulating mounting rod 12 is parallel to the axial direction of the cylinder.

The supporting rod 31 is mounted on the insulating mounting rod 12, optionally, the supporting rod 31 and the insulating mounting rod 12 are assembled to form a straight rod body, so that the supporting rod 31 is connected inside the columnar shell 11, after the supporting rod is mounted, the supporting rings 32 are coaxial with the columnar shell 11, so that the supporting rings 32 are sequentially arranged in the axial direction of the columnar shell 11, the air inlet and the air outlet are respectively formed at two ends of the columnar shell 11, and the effect that the distances between the supporting rods 31 and the air outlet are different is achieved. With the above structure, the spacing between the corona generating electrode 5 on each support ring 32 and the inner wall of the above-described columnar housing 11 is made the same.

Optionally, a third insulating layer is wrapped outside the cylindrical housing 11, so as to prevent a user from touching the dust-collecting housing 1 to get an electric shock, and further ensure reliable operation of the electrostatic air cleaner.

More preferably, the cylindrical shell 11 is further connected with a gas collecting cover 13, the gas collecting cover 13 is located outside the cylindrical shell 11, and the gas collecting cover 13 corresponds to and communicates with the air inlet, so that the air to be purified outside is ensured to enter from the air inlet in order. A filter screen is installed in the air inlet and/or the gas-collecting hood 13, and is a primary filter screen, so that large particle impurities in the air entering the air inlet are filtered, and the safe operation of the electrostatic air purifier is further ensured. Since the installation of the filter screen in the gas collecting hood and/or the air inlet is a very prior art, detailed description thereof will not be repeated here, and the filter screen is not shown in the drawings.

An alternative implementation of this embodiment is as follows: the cylindrical housing 11 is defined to have a first end and a second end at both ends thereof, the air inlet and the air outlet are respectively formed at the first end and the second end, and the insulating mounting rod 12 is connected to the first end.

The air supply assembly in this embodiment includes a motor 6 and a cross-flow fan 7. The motor 6 is mounted on the inner wall of the second end, the motor 6 is electrically connected with a controller, the high voltage generator 2 is also electrically connected with the controller, the controller is also electrically connected with a power supply, so as to supply power to the motor 6, and the controller controls the high voltage generator 2 to be started and stopped. The through-flow fan blade 7 is inserted into the supporting ring 32, and the through-flow fan blade 7 and the supporting ring 32 of the netpen structure 3 are coaxially arranged to define all the supporting rings 32 to form a circular ring group, and the length of the through-flow fan blade 7 is adapted to the length of the circular ring group, that is, wind generated by the through-flow fan blade 7 can cover all the supporting rings 32. Alternatively, the controller in this embodiment may be a circuit board.

The motor 6 is connected with the cross-flow fan blade 7 to drive the cross-flow fan blade 7 to rotate in the support ring 32, so that air to be purified is sucked from the air inlet and blown to the corona generating electrode 5.

For easy disassembly and assembly, optionally, the columnar housing 11 in this embodiment includes a circular tube, and a first sealing plate and a second sealing plate plugged at two ends of the circular tube, where the first sealing plate forms a first end of the columnar housing 11, the second sealing plate forms a second end of the columnar housing 11, the first sealing plate is screwed or clamped or bolted with the circular tube, the second sealing plate is screwed or clamped or bolted with the circular tube, the middle part of the first sealing plate is provided with the air inlet, the insulating mounting rod 12 is fixedly connected on the first sealing plate, the position of the second sealing plate close to the edge is provided with a plurality of through holes, the plurality of through holes form an annular hole group corresponding to the air outlet channel 4, and the annular hole group forms the air outlet, and the motor 6 is installed on the second sealing plate.

When dismantling, only need take off first shrouding from column casing 11, can take out above-mentioned cylinder mould structure 3, when taking off the second shrouding from column casing 11, then take out above-mentioned air supply subassembly, at this moment, then conveniently clear up the inner wall of above-mentioned column casing 11, also conveniently maintain or change cylinder mould structure 3 and air supply subassembly.

The above description is merely an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present invention, and it is intended to cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An electrostatic air cleaner, comprising:

2. An electrostatic air cleaner according to claim 1, wherein the netpen structure comprises:

the support rod is connected with the dust collection housing;

and the support rings are fixedly connected with the support rods and are electrically connected with the support rods, and each support ring is provided with a plurality of corona generating poles.

3. An electrostatic air cleaner according to claim 2, wherein:

the axial direction of the supporting ring is parallel to the length direction of the supporting rod, and a plurality of supporting rings are coaxially arranged.

4. An electrostatic air cleaner according to claim 3, wherein:

and the supporting rings are sequentially distributed along the trend of the air outlet channel.

5. An electrostatic air cleaner according to claim 4, wherein:

a gap for air supply to pass through is formed between two adjacent supporting rings;

6. An electrostatic air cleaner according to claim 2, wherein:

the support ring is wrapped with a first insulating layer, and the corona generating electrode is located outside the first insulating layer.

7. An electrostatic air cleaner according to claim 6, wherein:

the support rod is wrapped with a second insulating layer.

8. The electrostatic air cleaner of any one of claims 2-7, wherein the dust collection housing includes:

a columnar shell with a smooth inner wall, wherein the columnar shell is electrically connected with one electrode of the high-voltage generator;

9. The electrostatic air cleaner of claim 8, wherein the dust collection housing further comprises:

10. The electrostatic air cleaner of claim 9, wherein the dust collection housing further comprises:

the filter screen is arranged in the air inlet and/or the gas collecting hood.

11. An electrostatic air cleaner according to claim 8, wherein:

the two ends of the columnar shell are respectively a first end and a second end, the air inlet and the air outlet are respectively arranged at the first end and the second end, and the insulating mounting rod is fixedly connected to the first end.

12. An electrostatic air cleaner according to claim 11, wherein: