CN111328296B

CN111328296B - Electrostatic precipitator for compact air cleaner and compact air cleaner using the same

Info

Publication number: CN111328296B
Application number: CN201880071459.7A
Authority: CN
Inventors: 金学埈; 金容珍; 韩方牛; 禹彰奎
Original assignee: Korea Institute of Machinery and Materials KIMM
Current assignee: Korea Institute of Machinery and Materials KIMM
Priority date: 2017-09-08
Filing date: 2018-07-18
Publication date: 2022-09-23
Anticipated expiration: 2038-07-18
Also published as: KR102002127B1; CN111328296A; KR20190028611A; WO2019050151A1

Abstract

An electrostatic precipitator unit for an air cleaner and an air cleaner using the same are disclosed. An electrostatic precipitator unit for an air cleaner according to an exemplary embodiment of the present invention includes: a first main electrode plate receiving a high voltage; a plurality of first electrode plates disposed in parallel with each other, one end of each of the plurality of first electrode plates being connected to the first main electrode plate; a second main electrode plate disposed parallel to the first main electrode plate at a position spaced apart from the other end of the first electrode plate, the second main electrode plate being grounded; a plurality of second electrode plates respectively disposed between the plurality of first electrode plates, one end of each of the plurality of second electrode plates being connected to the second main electrode plate; a plurality of first barrier members respectively disposed at the other end of each of the plurality of first electrode plates and made of an insulating material to be insulated between the other end of the first electrode plate and the second electrode plate; and a plurality of second barrier members respectively disposed at the other end of each of the plurality of second electrode plates and made of an insulating material to insulate between the other end of the second electrode plate and the first electrode plate.

Description

Electrostatic precipitator for compact air cleaner and compact air cleaner using the same

Technical Field

The present invention relates to an electrostatic precipitator for a compact air cleaner and a compact air cleaner using the same, and more particularly, to an electrostatic precipitator for a compact air cleaner capable of having high dust collecting efficiency and operating stably despite of a small volume, and a small-sized air cleaner using the same.

Background

Currently, widely used air cleaning devices are mainly classified into two types. One is the use of filters and the other is the use of charged collection plates.

Air cleaning using a filter separates contaminant particles by forcing air through a filter having a large number of pores such that the contaminant particles in the air are captured by the pores of the filter.

However, if the pore size of the filter is made too small in order to improve the air purification efficiency, pressure loss increases when air is sucked into the air cleaning device, so that power consumption increases and maintenance becomes troublesome because the filter contaminated with contaminant particles needs to be cleaned or replaced from time to time, and finally, the use of the filter becomes economically unfeasible.

An electrostatic air cleaner removes contaminant particles by charging particles in air with ions and passing them between charged collector plates, thereby causing the ion-charged contaminant particles to adhere to the collector plates of opposite polarity to the charged particles.

In the electrostatic compact type air cleaner, the dust collecting part is composed of collecting plates C1 and C2 alternately arranged, and the collecting plates C1 and C2 are charged to opposite polarities as shown in fig. 1. However, since the electric charges are concentrated at the end of the collecting plate C1 charged with electricity of one polarity adjacent to the end of the collecting plate C2 charged with electricity of the other polarity where the electric charges are also concentrated, the discharge phenomenon occurs more easily than other portions of the collecting plate, sometimes causing sparks.

Conventionally, in order to prevent sparks, the ends of the collecting plates charged with electricity of alternating polarity are spaced apart in the longitudinal direction of the collecting plates.

However, in the case of such a space, when the collecting plates are arranged, space efficiency is lowered, thereby lowering dust collecting efficiency because the dust collecting area is reduced in the same size of space.

In recent years, there has been an increasing interest in air cleaners that can be conveniently used at home or in automobiles because of the difficulty in frequent ventilation of a large amount of fine dust and yellow dust in rooms. Here, the large size of the air cleaner and the troublesome maintenance are factors that hinder the use of the air cleaner.

Disclose (a) to

Technical problem

Exemplary embodiments of the present invention provide an electrostatic precipitator for a compact air cleaner capable of preventing sparks between electrode plates of opposite polarities and constituting the compact air cleaner by spatially and efficiently arranging the electrode plates, and a compact air cleaner using the same.

Further, exemplary embodiments of the present invention will provide an electrostatic precipitator for a compact air cleaner that can be easily maintained and a compact air cleaner using the same.

Technical scheme

An electrostatic precipitator for a compact air cleaner according to an exemplary embodiment of the present invention includes: a first main electrode plate receiving a high voltage; a plurality of first electrode plates disposed in parallel with each other, one end of each of the plurality of first electrode plates being connected to the first main electrode plate; a second main electrode plate disposed parallel to the first main electrode plate at a position spaced apart from the other end of the first electrode plate, the second main electrode plate being grounded; a plurality of second electrode plates respectively disposed between the plurality of first electrode plates, one end of each of the plurality of second electrode plates being connected to the second main electrode plate; a plurality of first barrier members each disposed at the other end of each of the plurality of first electrode plates, respectively, and made of an insulating material to be insulated between the other end of the first electrode plate and the second electrode plate; and a plurality of second barrier members respectively disposed at the other end of each of the plurality of second electrode plates and made of an insulating material to insulate between the other end of the second electrode plate and the first electrode plate.

The first barrier member may include a fixing groove in which the other end of the first electrode plate is inserted, and the second barrier member may include a fixing groove in which the other end of the second electrode plate is inserted.

The plurality of first blocking members may be connected to each other by a first connection bar, and the plurality of second blocking members may be connected to each other by a second connection bar.

The first connection bar may further include a fixing slit in which the second electrode plate is inserted, and the second connection bar may further include a fixing slit in which the first electrode plate is inserted.

The first barrier member and the first connection bar may be disposed to be spaced apart at both sides in a width direction of the first electrode plate, and the second barrier member and the second connection bar may be disposed to be spaced apart at both sides in a width direction of the second electrode plate.

It is possible to further include a gap maintaining member that is disposed between the first blocking member and the second blocking member, includes a plurality of gap maintaining grooves in which the plurality of first electrode plates and the plurality of second electrode plates are respectively inserted, and is made of an insulating material.

The first and second main electrode plates may include: a long plate-shaped main plate; a plurality of sub-boards extending in a width direction of one end of the main board; and a support plate bent toward one side of each sub-plate to protrude to one surface of each sub-plate and to contact one surface of the first electrode plate or the second electrode plate; and may further include a subsidiary support bar formed to be spaced apart from each of the support plates and to be in contact with the other surface of the first electrode plate or the other surface of the second electrode plate.

The support plate may be formed to be convex in the direction of the subsidiary support bar.

The electrode assembly may further include a frame surrounding the first main electrode plate, the first electrode plate, the second main electrode plate, the second electrode plate, the first blocking member, and the second blocking member, and opened at both sides in a width direction of the first electrode plate and the second electrode plate.

The first electrode plate, the second electrode plate, the first blocking member, and the second blocking member may be detachably coupled to the frame.

At least one of the first electrode plate and the second electrode plate may be formed by applying plastic to a metal plate or applying a conductive material to a plastic plate.

A compact air cleaner according to an exemplary embodiment of the present invention includes: an ion generation unit that generates ions by electric discharge; an electrostatic precipitator that collects particles charged by ions; and a fan that moves air such that the air passes through the ion generating unit and the electrostatic precipitator.

The electrostatic precipitator may be formed to be detachable.

A fan may move air from the electrostatic precipitator to the ion generating unit.

The discharge electrode of the ion generating unit may protrude to the outside.

Advantageous effects

The electrostatic precipitator for a compact air cleaner according to an exemplary embodiment of the present invention prevents a discharge phenomenon between electrode plates of opposite polarities without generating sparks even when the ends of the electrode plates are adjacently disposed to form a small-sized air cleaner.

In addition, the components constituting the electrostatic precipitator can be easily separated or assembled, thereby facilitating maintenance work.

In addition, the gap between the electrode plates may be maintained constant to generate an electric field of a constant magnitude.

Further, the dust in the air is sufficiently charged, and then the dust can be collected, thereby improving the efficiency of electrostatic precipitation.

Drawings

Fig. 1 is a schematic view of a dust collection unit in an electrostatic air cleaner.

Fig. 2 is a coupled perspective view of an electrostatic precipitator for a compact air cleaner according to an exemplary embodiment of the present invention.

Fig. 3 is an exploded perspective view of an electrostatic precipitator for a small-sized air cleaner according to an exemplary embodiment of the present invention.

Fig. 4 is a top plan view of an electrostatic precipitator for a compact air cleaner according to an exemplary embodiment of the present invention.

Fig. 5 is a schematic view of first and second main electrode plates of an electrostatic precipitator for a compact air cleaner according to an exemplary embodiment of the present invention.

Fig. 6 is an explanatory view of a process for forming first and second main electrode plates of an electrostatic precipitator for a compact air cleaner according to an exemplary embodiment of the present invention.

Fig. 7 is a schematic view of a compact air cleaner using an electrostatic precipitator for a small-sized air cleaner according to an exemplary embodiment of the present invention.

MODE OF THE INVENTION

The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.

As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. The drawings and description are to be regarded as illustrative in nature and not as restrictive. Like reference numerals refer to like parts throughout the specification.

In this specification, redundant description of the same components will be omitted.

Further, in the present specification, it will be understood that, when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or connected or coupled to the other element with the other element interposed therebetween. On the other hand, it will be understood that when an element is referred to as being "directly connected to" or "directly coupled to" another element, it can be connected to or coupled to the other element without interposing the other element therebetween.

Furthermore, the terminology used in the description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Furthermore, in this specification, the singular forms may include the plural forms unless the context clearly dictates otherwise.

In this specification, it will be understood that the terms "comprises," "comprising," "includes," "including," "includes" or "including" when used in this specification and the following claims are intended to specify the presence of stated features, integers, steps, actions, elements, components, or groups thereof, but they do not preclude the presence or addition of one or more other features, integers, steps, actions, elements, components, or groups thereof.

Further, in this specification, the term "and/or" includes a plurality of the described items or a combination of any one of the plurality of the described items. Further, in the present specification, "a or B" may include "a", "B", or "both a and B".

Fig. 2 is a coupled perspective view of an electrostatic precipitator for a compact air cleaner according to an exemplary embodiment of the present invention, fig. 3 is an exploded perspective view of an electrostatic precipitator for a small-sized air cleaner according to an exemplary embodiment of the present invention, and fig. 4 is a top plan view of an electrostatic precipitator for a small-sized air cleaner according to an exemplary embodiment of the present invention.

The electrostatic precipitator 1 for a small-sized air cleaner according to the present invention includes a first main electrode plate 10, a plurality of first electrode plates 20, a second main electrode plate 30, a plurality of second electrode plates 40, a plurality of first dam members 50, and a plurality of second dam members 60.

In an exemplary embodiment of the present invention, the first electrode plate 20, the second electrode plate 40, the first blocking member 50, and the second blocking member 60 may be provided in plurality.

By receiving the high voltage, the first main electrode plate 10 is charged to a negative polarity.

The plurality of first electrode plates 20 are respectively arranged at right angles to the first main electrode plates 10 and the plurality of first electrode plates 20 are parallel to each other. One end of each of the first electrode plates 20 is connected to the first main electrode plate 10, and is charged to a negative polarity, similar to the first main electrode plate 10.

The second main electrode plate 30 may be disposed opposite to the first main electrode plate 10 with respect to the first electrode plate 20, and may be disposed in parallel with the first main electrode plate 10. The second main electrode plate 30 is grounded and charged to a positive polarity.

That is, the second main electrode plate 30 is regarded as a positive polarity with respect to the first main electrode plate 10 charged with electricity of a negative polarity by being grounded.

Each of the plurality of second electrode plates 40 is charged to a positive polarity by connecting one end thereof to the second main electrode plate 30 in a state where the plurality of second electrode plates 40 are preferably at right angles to the second main electrode plate 30. Each of the second electrode plates 40 may be disposed between the first electrode plates 20, that is, alternately disposed with the first electrode plates 20, and may be parallel to the first electrode plates 20.

An electric field is formed between the first electrode plate 20 charged with negative polarity and the second electrode plate 40 charged with positive polarity, and charged particles passing between the first electrode plate 20 and the second electrode plate 40 may be collected on the electrode plates charged with opposite polarities.

The first and second

main electrode plates

10 and 30 and the first and

second electrode plates

20 and 40 may be made of a metal material so as to be charged.

Each of the plurality of first barrier members 50 may be disposed at the other end of the first electrode plate 20 to insulate between the other end of the first electrode plate 20 and the second electrode plate 40. In an exemplary embodiment of the present invention, the first blocking members 50 may be respectively disposed between the other end of each of the first electrode plates 20 and one end of the second electrode plate 40 adjacent to the first electrode plate 20, and may be disposed to surround the other end of the first electrode plate 20. The first blocking member 50 is made of an insulating material.

The plurality of second barrier members 60 are made of an insulating material, similar to the first barrier members 50, and are disposed at the other ends of the respective second electrode plates 40 so as to be disposed to insulate between the other ends of the second electrode plates 40 and the first electrode plates 20. In an exemplary embodiment of the present invention, the second blocking members 60 may be respectively disposed between the other end of each of the second electrode plates 40 and one end of the first electrode plate 20 adjacent to the each of the second electrode plates 40, and may be disposed to surround the other end of the second electrode plate 40.

When the ends of the electrode plates charged with electricity of different polarities are adjacent to each other, discharge may occur and a spark may be generated, however, since the first and

second dam members

50 and 60 are made of an insulating material, current is prevented from occurring between the ends of the first and

second dam members

50 and 60, and thus, a discharge phenomenon does not occur.

As a result of this, the first electrode plate 20 and the second electrode plate 40 can be arranged more space-efficiently, and the dust collecting area in the same-sized space can be made larger, so that the dust collecting efficiency can be improved. That is, even if the electrostatic air cleaner is made in a small size, excellent dust collecting efficiency can be exhibited.

When the electrostatic precipitator 1 according to the present invention is installed in a compact air cleaner and used, it is necessary to periodically remove dust on the first and

second electrode plates

20 and 40 since dust collecting efficiency may be lowered as the dust is continuously collected in the first and

second electrode plates

20 and 40.

The electrostatic precipitator 1 according to the present invention is provided with various easy-to-maintain devices.

The electrostatic precipitator 1 comprises firstly a frame 100 as an easy-to-maintain device.

The frame 100 is formed to surround the first and second

main electrode plates

10 and 30, the first and

second electrode plates

20 and 40, and the first and

second blocking members

50 and 60, and the first and second

main electrode plates

10 and 30, etc. disposed in the inner space of the frame 100 are directly fixed to the frame 100.

Therefore, when the electrostatic precipitator 1 according to the present invention is maintained, the components of the electrostatic precipitator 1 provided in the frame 100 can be detached or mounted from the compact air cleaner at a time, and the first and second

main electrode plates

10 and 30 can be easily arranged at the correct positions, because the frame 100 can be used as a reference for arranging the first and second

main electrode plates

10 and 30.

Since the charged dust coming along with the air must flow into the space between the first and

second electrode plates

20 and 40, the frame 100 is opened to both sides in the width direction of the first and

second electrode plates

20 and 40, and the ends of the first and second

main electrode plates

10 and 30 connected to an external power source or the like may be exposed to the outside of the frame 100.

The frame 100 is made of an insulating material, such as plastic, so as not to electrically affect the charged first and second

main electrode plates

10 and 30 and the first and

second electrode plates

20 and 40.

When the electrostatic precipitator 1 according to the present invention further includes the frame 100, it is preferable that the first and

second electrode plates

20 and 40 and the first and

second blocking members

50 and 60 are formed to be detachable from the frame 100.

Since the first and

second electrode plates

20 and 40 in the frame 100 are adjacently disposed with a small interval, it is not easy to remove dust attached to the first and

second electrode plates

20 and 40, however, when the first and

second electrode plates

20 and 40 are formed to be detachable from the frame 100, the first and

second electrode plates

20 and 40 may be separated from the frame 100 for easy cleaning.

The first and second

main electrode plates

10 and 30 each include a main plate p1, a sub plate p2, and a support plate p3, wherein the electrostatic precipitator 1 according to the present invention may further include auxiliary supports b. Fig. 5 shows the first and second

main electrode plates

10 and 30 and the subsidiary support bars b.

The main plate p1 is the structure of the first main electrode plate 10, and has a long plate shape. The plurality of sub-boards p2 are provided so as to be spaced apart from each other along the longitudinal direction of the main board p1, and extend from the main board p1 along the width direction of the main board p 1.

The support plate p3 is formed to be bent from one side of each sub-plate p2 so as to protrude to one surface of the sub-plate p2, and the auxiliary support b is disposed to be slightly spaced apart from the support plate p3 to form a slight gap from the support plate p 3.

The main board p1, the sub board p2, and the support board p3 may be integrally formed to be all charged, and the auxiliary support b is integrally formed with the frame 100 and is not charged.

The first electrode plate 20 or the second electrode plate 40 is detachable from the gap between the support plate p3 and the subsidiary support piece b, and when the first electrode plate 20 is inserted into the gap between the support plate p3 and the subsidiary support piece b, the first electrode plate 20 is fixed at a predetermined position with respect to the first main electrode plate 10, and at the same time, one surface of the first electrode plate 20 is in contact with the charged support plate p3, so that the first electrode plate 20 may also be charged with the same polarity as the first main electrode plate 10.

The first main electrode plate 10 for fixing the first electrode plate 20 and charging the first electrode plate 20 may be manufactured using one metal plate. That is, the long plate-shaped metal plate shown in (a) of fig. 6 may be cut into a shape shown in (b) of fig. 6, in which the "L" -shaped member is attached to the width-direction end of the long plate, and then, as shown in (c) of fig. 6, the end of the "L" -shaped member may be manufactured by bending upward.

Similar to the connection between the first main electrode plate 10 and the first electrode plate 20, since the subsidiary support b is disposed at a position slightly spaced apart from the support plate p3 of the second main electrode plate 30 and the second electrode plate 40 is interposed between the support plate p3 of the second main electrode plate 30 and the subsidiary support b, the second electrode plate 40 is fixed at a predetermined position with respect to the second main electrode plate 30 and is charged by being in contact with the second main electrode plate 30.

The support plates p3 of the first and second

main electrode plates

10 and 30 may be formed to be convexly bent in the direction of the subsidiary support bar b. Preferably, the central region of the supporting plate p3 may be convexly bent toward the subsidiary supporting bar b

In this case, the support plate p3 functions as a plate spring to firmly support the first and

second electrode plates

20 and 40 by pressing the first and

second electrode plates

20 and 40 toward the side of the subsidiary support bar b, and the entrance of the space between the support plate p3 and the subsidiary support bar b is expanded to easily insert the first and

second electrode plates

20 and 40 into the space between the support plate p3 and the subsidiary support bar b.

Fixing grooves g may be formed in the first and

second blocking members

50 and 60, respectively.

The other end of the first electrode plate 20 is inserted into the fixing groove g of the first dam 50, and the other end of the second electrode plate 40 is inserted into the fixing groove g of the second dam 60.

In this way, the first and

second blocking members

50 and 60 having the fixing grooves g surround the other ends of the first and

second electrode plates

20 and 40 inserted in the fixing grooves g, the other ends of the first and

second electrode plates

20 and 40 are insulated from one ends of the adjacent first and

second electrode plates

20 and 40, and the first and

second electrode plates

20 and 40 may be maintained in a fixed state, and thus it is not necessary to provide a separate device to fix the blocking

members

50 and 60.

The plurality of first blocking members 50 may be connected to each other by a first connection bar 70, and the plurality of second blocking members 60 may be connected by a second connection bar 80.

The first connection bars 70 connect the first barrier members 50 respectively formed according to the number of the first electrode plates 20, and the second connection bars 80 connect the second barrier members 60 respectively formed according to the number of the second electrode plates 40, whereby the first and

second barrier members

50 and 60 can be treated as a single body.

Therefore, in order to perform maintenance of the electrostatic precipitator 1, the first and

second blocking members

50 and 60 may be easily detached from the first and

second electrode plates

20 and 40 at the same time, rather than being removed one by one, and the first and

second electrode plates

20 and 40 may be arranged side by side in a state where the first and

second blocking members

50 and 60 are arranged in a straight line by the first and second connection bars 70 and 80, respectively.

The first connection bar 70 may have a fixing slit s into which the second electrode plate 40 is inserted, and the second connection bar 80 may have a fixing slit s into which the first electrode plate 20 is inserted.

As described above, since the first electrode plates 20 and the second electrode plates 40 are alternately arranged, the second electrode plates 40 pass between the first barrier members 50, and the first electrode plates 20 pass between the second barrier members 60.

The fixing slit s is a hollow space such that the second electrode plate 40 disposed between the first dam members 50 does not interfere with the first connection bar 70 connected to the first dam members 50, and the first electrode plate 20 disposed between the second dam members 60 does not interfere with the second connection bar 80.

Further, since the first and

second electrode plates

20 and 40 inserted in the fixing slit s are fixed without moving in the thickness direction of the fixing slit s, the gap between the first and

second electrode plates

20 and 40 can be kept constant, which is advantageous to generate an electric field of a predetermined magnitude between the first and

second electrode plates

20 and 40.

Each first barrier member 50 and each first connection bar 70 may be formed by being divided at both sides in the width direction of the first electrode plate 20, and each second barrier member 60 and each second connection bar 80 may be formed by being divided at both sides in the width direction of the second electrode plate 40.

That is, each of the plurality of first blocking members 50 may be provided as a division body divided on both sides in the width direction of the first electrode plate 20, and the first connection bars 70 may be respectively provided on both sides in the width direction of the first electrode plate 20, or may be provided in the division body. Each of the first blocking members 50 may have a separator, which may be coupled to each other along the width direction of the first electrode plate 20.

Similarly, each of the plurality of second blocking members 60 may be provided as a division body divided at both sides in the width direction of the second electrode plate 40, and the second connection bars 80 may be respectively provided at both sides of the second electrode plate 40, or may be provided in the division body.

In an exemplary embodiment of the present invention, the first and

second barrier members

50 and 70 may be disposed in a bipartite form (bipartite form) on both sides in the width direction of the first and

second electrode plates

20 and 40. For reference, the width directions of the first and

second electrode plates

20 and 40 are shown to be parallel to the vertical direction in fig. 3.

In the case where the first and

second blocking members

50 and 60 to be brought into contact with the other ends of the first and

second electrode plates

20 and 40 or to surround the other ends of the first and

second electrode plates

20 and 40 form a single body in the entire width direction of the first and

second electrode plates

20 and 40, when the first and

second electrode plates

20 and 40 and the first and

second blocking members

50 and 60 are disposed in the frame 100, alignment may be achieved only when the first and

second blocking members

50 and 60 are moved in the length direction of the first and

second electrode plates

20 and 40 with respect to the first and

second electrode plates

20 and 40 or when the first and

second electrode plates

20 and 40 are moved in the length direction of the first and

second electrode plates

20 and 40 with respect to the first and

second blocking members

50 and 60.

However, in the case where the first and

second blocking members

50 and 60 and the first and second connection bars 70 and 80 connecting the first and

second blocking members

50 and 60 are partitioned at both sides of the first and

second electrode plates

20 and 40 in the width direction, when the first and

second electrode plates

20 and 40 and the first and

second blocking members

50 and 60 are disposed in the frame 100, the first and

second electrode plates

20 and 40 or the first and

second blocking members

50 and 60 may be aligned while being moved in the width direction and the longitudinal direction of the first and

second electrode plates

20 and 40, so that the first and

second electrode plates

20 and 40 and the first and

second blocking members

50 and 60 may be further easily arranged.

The electrostatic precipitator 1 according to the present invention may further comprise a gap maintaining member 90.

The gap retaining member 90 has a plurality of gap retaining grooves 91, the gap retaining grooves 91 are elongated and formed at predetermined intervals in the longitudinal direction, and the first electrode plate 20 and the second electrode plate 40 can be inserted into the gap retaining grooves 91, respectively.

The gap retaining member 90 may extend along the arrangement direction of the first and

second electrode plates

20 and 40, and may be disposed at right angles at outer positions in the width direction of the first and

second electrode plates

20 and 40 such that the first and

second electrode plates

20 and 40 do not move in the longitudinal direction of the gap retaining member 90 by the gap retaining groove 91, thereby constantly maintaining the gap between the first and

second electrode plates

20 and 40.

Preferably, the gap maintaining members 90 are respectively disposed at both sides of the first and

second electrode plates

20 and 40 in the width direction and at many positions in the longitudinal direction of the first and

second electrode plates

20 and 40 so that the first and

second electrode plates

20 and 40 can maintain a constant gap in the entire longitudinal direction and the entire width direction. Since the first and

second barrier members

50 and 60 are located at both ends of the first and

second electrode plates

20 and 40 in the longitudinal direction, the gap retaining member 90 must be disposed between the first and

second barrier members

50 and 60.

Further, during maintenance of the electrostatic precipitator 1, the gap retaining member 90 connected to the first connection bar 70 or the second connection bar 80 may be processed together with the first connection bar 70 or the second connection bar 80, thereby making the electrostatic precipitator 1 easy to maintain.

As shown in fig. 3, in the first and second connection bars 70 and 80 and the gap retaining member 90, which are respectively disposed at both sides of the first and

second electrode plates

20 and 40 in the width direction, an element disposed at one side of the first and

second electrode plates

20 and 40 in the width direction may be formed as a single body with the frame 100.

At least one of the first and

second electrode plates

20 and 40 is preferably formed by coating a plastic on a metal plate or by coating a conductive material on a plastic plate.

In the first and

second electrode plates

20 and 40 made of metal, there is a risk of an electric discharge phenomenon or corrosion.

As in the present exemplary embodiment, when the conductive metal plate is coated with the non-conductive plastic, a discharge phenomenon or corrosion in the first and

second electrode plates

20 and 40 may be prevented. In addition, even when the conductive material is coated on the non-conductive plastic plate, the discharge phenomenon can be prevented, and in this case, the first and

second electrode plates

20 and 40 can be formed not only to be light but also to reduce the manufacturing cost.

Hereinafter, a small-sized air cleaner using the electrostatic precipitator 1 as described above is described. Fig. 7 shows a schematic view of a compact air cleaner according to the present invention. A detailed description overlapping with the above electrostatic precipitator 1 is omitted.

A compact air cleaner according to an exemplary embodiment of the present invention is formed to include an ion generating unit 2, the above electrostatic precipitator 1, and a fan 3.

The ion generating unit 2 generates ions by receiving a high voltage from an external power supply. That is, the ion generating unit 2 is provided with an electrode exposed to the air in a state of being charged by a high voltage to generate a discharge phenomenon in the electrode, thereby generating ions around the electrode.

The ions generated by the ion generating unit 2 are dispersed in the air, and the dispersed ions charge dust particles.

The electrostatic precipitator 1 collects dust particles charged by ions by electrostatic attraction.

The fan 3 forces air to flow through the ion generating unit 2 and the electrostatic precipitator 1 so that ions generated in the ion generating unit 2 and dust particles in the air can come into contact with each other and the charged dust particles can move into the region of the electric field formed by the electrostatic precipitator 1.

Since the small-sized air cleaner according to the present invention has the electrostatic precipitator 1 which is spatially effectively arranged, the small-sized air cleaner of the present invention has high electrostatic precipitation efficiency, and can effectively purify air in spite of its small volume.

For a compact air cleaner according to the present invention, the electrostatic precipitator 1 is preferably formed to be detachable.

As described above, as compact air cleaners are continuously used, dust may accumulate on the first and

second electrode plates

20 and 40 of the electrostatic precipitator 1, and thus, it is necessary to remove the dust, but since the electrostatic precipitator 1 is removable from the small air cleaner, maintenance work, such as dust removal, may be facilitated.

Since the first and

second electrode plates

20 and 40 of the electrostatic precipitator 1 can be separated from the frame 100, the ease of maintenance work can be further improved.

Preferably, the fan 3 is rotated so as to move air from the electrostatic precipitator 1 in the direction of the ion generating unit 2.

The air purification of the small-sized air cleaner according to the present invention is performed by sequentially performing the ion generating process of the ion generating unit 2, the process of the ions charging the dust in the air, and the dust collecting process of the electrostatic precipitator 1, and if the process of the ions charging the dust in the air does not sufficiently occur, the efficiency of dust collection becomes low even though the electrostatic precipitator 1 is operated.

Further, when the ion generating unit 2 is disposed upstream of the electrostatic precipitator 1 based on the flow of air, dust in the air should be charged as much as possible by the ions generated by the ion generating unit 2 before the air completely passes through the electrostatic precipitator 1.

As a result of this, a higher level of high voltage should be supplied to the ion generating unit 2 to increase the unit volume or energy consumption to overcome the spatial limitation due to the spatial limitation of the dust to be charged.

Therefore, in the exemplary embodiment of the present invention, by flowing air so as to move in the direction of the ion generating unit 2 in the electrostatic precipitator 1 and then discharging to the outside, the charging process of dust is allowed to be performed outside the air cleaner, rather than inside the air cleaner.

In other words, the ions generated from the ion generating unit 2 are immediately discharged to the outside of the air cleaner to allow the ions to sufficiently contact dust in the air, and then the wind by the fan 3 flows into the air cleaner and passes through the electrostatic precipitator 1.

Accordingly, the air introduced into the air cleaner passes through the electrostatic precipitator 1 first by the fan 3, and then passes through the ion generating unit 2. The position of the fan 3 can be variously determined.

Dust in the air flowing into the air cleaner has been charged by ions generated in the ion generating unit 2 and is removed from the air while passing through the electrostatic precipitator 1 after flowing into the air cleaner, and the purified air moves to the ion generating unit 2 and flows to the outside again together with the ions generated in the ion generating unit 2.

As shown in fig. 7, the ion generating unit 2 may be disposed inside the small-sized air cleaner, but in this case, ions generated by the ion generating unit 2 may be attached to an inner wall of the air cleaner, or the ions may disappear or decrease in number due to various reasons during the flow inside the air cleaner.

Therefore, in the exemplary embodiment of the present invention, the discharge electrode, i.e., the part generating ions by the discharge phenomenon, is preferably formed to protrude to the outside of the compact air cleaner.

The discharge electrodes may be provided in pairs, and at least a portion of the discharge electrodes may be exposed to the outside of the housing of the air cleaner. Further, the discharge electrode may be disposed near an air outlet of the air cleaner in consideration of the air flow of the fan 3.

In this case, in the small air cleaner, there is little fear that the ions generated by the ion generating unit 2 disappear, and therefore, the dust particles outside the small air cleaner can be charged more efficiently. On the other hand, in the exemplary embodiment of the present invention, the length of the discharge electrode protruding outward may be variously determined as needed, and is preferably 0 to 10mm, more preferably between 3mm to 6 mm. In this case, the amount of ions detected outside the air cleaner may appear high.

However, the exemplary embodiments of the present invention are not limited to the above range, and may be variously determined according to the structure of the air cleaner, the flow of air, or the operating condition of the ion generating unit.

In addition to the above-described configuration, the compact air cleaner according to the present invention may further include a power supply unit (not shown) for supplying power to the ion generating unit 2, the electrostatic precipitator 1, and the fan 3, a power button (not shown) for controlling power supply from the power supply unit, a sensor (not shown) for measuring an amount of dust in air, or a controller (not shown) for adjusting an ion generation amount or a dust collection intensity according to a measured value of the sensor. While the invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Description of the reference symbols

1 electrostatic precipitator 2 ion generating unit

3: fan 10: first main electrode plate

20: first electrode plate 30: second main electrode plate

40 second electrode plate 50 first blocking member

60 second blocking member 70 first connecting bar

80 second connecting strip 90 gap maintaining member

91 gap holding groove 100 frame

b auxiliary supporting bar g fixing groove

p1 main board p2 daughter board

p3 support plate s fixing slot.

Claims

1. An electrostatic precipitator for a compact air cleaner, comprising:

a first main electrode plate receiving a high voltage;

a plurality of first electrode plates disposed parallel to each other, one end of each of the plurality of first electrode plates being connected to the first main electrode plate;

a second main electrode plate disposed parallel to the first main electrode plate at a position spaced apart from the other end of the first electrode plate, the second main electrode plate being grounded;

a plurality of second electrode plates respectively disposed between the plurality of first electrode plates, one end of each of the plurality of second electrode plates being connected to the second main electrode plate;

a plurality of first blocking members respectively provided at the other end of each of the plurality of first electrode plates and made of an insulating material to insulate between the other end of the first electrode plate and the second electrode plate; and

a plurality of second barrier members respectively provided at the other end of each of the plurality of second electrode plates and made of an insulating material to insulate between the other end of the second electrode plate and the first electrode plate,

wherein the first and second dam members having fixing grooves surround the other end of the first electrode plate and the other end of the second electrode plate inserted in the fixing grooves, respectively.

2. The electrostatic precipitator for a compact air cleaner according to claim 1, wherein

The plurality of first blocking members are connected to each other by a first connection strip, and

the plurality of second blocking members are connected to each other by a second connection bar.

3. The electrostatic precipitator for a compact air cleaner according to claim 2, wherein

The first connection bar further includes a fixing slit in which the second electrode plate is inserted, and

the second connection bar further includes a fixing slit in which the first electrode plate is inserted.

4. The electrostatic precipitator for a compact air cleaner according to claim 2, wherein

The first blocking member and the first connection bar are disposed to be partitioned at both sides in a width direction of the first electrode plate, and

the second blocking member and the second connection bar are disposed to be spaced apart at both sides in a width direction of the second electrode plate.

5. The electrostatic precipitator for a compact air cleaner according to claim 1, further comprising

A gap maintaining member disposed between the first blocking member and the second blocking member, including a plurality of gap maintaining grooves in which the plurality of first electrode plates and the plurality of second electrode plates are respectively inserted, and made of an insulating material.

6. The electrostatic precipitator for a compact air cleaner according to claim 1, wherein

The first main electrode plate and the second main electrode plate each include:

a long plate-shaped main plate;

a plurality of sub-boards extending in a width direction of one end of the main board; and

a support plate bent to one side of each sub-plate to protrude to one surface of each sub-plate, and contacting one surface of the first electrode plate or the second electrode plate, an

And a subsidiary support bar formed to be spaced apart from each support plate and to be in contact with the other surface of the first electrode plate or the other surface of the second electrode plate.

7. The electrostatic precipitator for a compact air cleaner according to claim 6, wherein

The support plate is formed to be protruded in a direction of the subsidiary support bar.

8. The electrostatic precipitator for a compact air cleaner according to claim 1, further comprising

A frame surrounding the first main electrode plate, the first electrode plate, the second main electrode plate, the second electrode plate, the first blocking member, and the second blocking member, and opened at both sides in a width direction of the first electrode plate and the second electrode plate.

9. The electrostatic precipitator for a compact air cleaner according to claim 8, wherein

The first electrode plate, the second electrode plate, the first blocking member, and the second blocking member are detachably coupled to the frame.

10. The electrostatic precipitator for a compact air cleaner according to claim 1, wherein

At least one of the first electrode plate and the second electrode plate is formed by coating plastic to a metal plate or coating a conductive material to a plastic plate.

11. A compact air cleaner comprising:

an ion generation unit that generates ions by electric discharge;

an electrostatic precipitator according to any of claims 1 to 10, which collects particles charged by ions; and

a fan that moves air such that the air passes through the ion generating unit and the electrostatic precipitator.

12. The compact air cleaner of claim 11, wherein

The electrostatic precipitator is formed to be detachable.

13. The compact air cleaner according to claim 11, wherein

The fan moves air from the electrostatic precipitator to the ion generation unit.

14. The compact air cleaner of claim 11, wherein

The discharge electrodes of the ion generating unit protrude to the outside.