CN107755096B

CN107755096B - Electric dust collector

Info

Publication number: CN107755096B
Application number: CN201710611126.6A
Authority: CN
Inventors: 全惠敬; 权慈英; 李浚硕
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2016-08-23
Filing date: 2017-07-25
Publication date: 2020-08-07
Anticipated expiration: 2037-07-25
Also published as: CN107755096A

Abstract

The invention provides an electric dust collector. The electric dust collector comprises: a charging section that charges dust particles in the air; and a dust collecting section that collects the dust particles charged in the charging section, characterized in that the dust collecting section includes: a plurality of high-pressure plates arranged in parallel to the air blowing direction and applied with a predetermined voltage; a plurality of dust collecting plates arranged in parallel with the air supply direction and arranged between the adjacent high-pressure plates; a connecting part connecting the end of the high pressure plate; and a power supply member coupled to the connection unit to apply a voltage to the high voltage board, wherein the connection unit is provided with one or more elastic fastening portions, and the power supply member is provided with one or more fastening holes through which the elastic fastening portions can penetrate and fasten.

Description

Electric dust collector

Technical Field

The present invention relates to an Electric Dust collector, and more particularly, to an Electric Dust collector (Electric Dust Collection Device) capable of stably and uniformly applying a high voltage to a high voltage electrode part by firmly fastening a power supply member to the high voltage electrode part provided in a Dust Collection part.

Background

Generally, an electrostatic precipitator is an apparatus that is attached to an air conditioner such as an air cleaner, an air conditioner, or a heater, and that electrically charges dust particles contained in air to collect dust.

The electric dust collector generally comprises: a charged portion for forming an electric field; and a dust collecting part for collecting the charged dust particles. Dust in the air is captured to the dust collecting part during passing through the dust collecting part after the air passes through the charging part.

The dust collecting part comprises: a voltage applying section; and a ground portion disposed facing the voltage applying portion, the dust charged in the charging portion being capable of being collected to the ground portion by an electric field between the voltage applying portion and the ground portion.

At this time, a power feeding member for applying a preset high voltage from an external power source to the voltage applying part may be fastened to the voltage applying part.

Fig. 1 is a diagram showing a coupling structure of a voltage applying unit and a power feeding member in a conventional electric dust collector.

Referring to fig. 1, the voltage applying section 1 includes: a plurality of high voltage electrode plates 2 arranged at a predetermined interval; and ribs 3 for connecting both end portions of the plurality of high-voltage electrode plates 2.

The voltage application part 1 may be formed by integral injection molding, and may be formed of resin or semi-insulating resin.

That is, the high-voltage electrode plate 2 and the rib 3 may be formed in one body by injection molding. In addition, the high-voltage electrode plates 2 and the ribs 3 may be formed of resin or semi-insulating resin.

A power supply member 4 may be fastened to the rib 3, the power supply member 4 being for applying a preset high voltage to the high voltage electrode plate 2.

The power feeding member 4 is formed so as to correspond to the rib 3 and can be sandwiched by the rib 3.

On the other hand, since the high-voltage application unit 1 is formed of a resin or a semi-insulating resin, a contact failure occurs between the power feeding member 4 and the voltage application unit 1, and a large contact resistance occurs at a portion where the contact failure occurs.

In addition, when a large contact resistance is generated due to a contact failure between the high-voltage application unit 1 and the power feeding member 4, there is a problem in that a predetermined high voltage cannot be supplied to the plurality of high-voltage electrode plates 2.

Further, if a large contact resistance is generated due to a contact failure between the high-voltage application unit 1 and the power feeding member 4, there is a problem that a stable and uniform voltage cannot be applied to each of the plurality of high-voltage electrode plates 2.

The stable and uniform voltage applied to the plurality of high-voltage electrode plates 2 is also directly related to the dust collecting performance of the dust collecting part.

In particular, since the high-voltage application part 1 is integrally formed by injection molding, the shape of the high-voltage application part 1 (i.e., the shape of the rib 3) itself is bent or distorted. At this time, a contact failure occurs between the high-voltage application unit 1 and the power feeding member 4 (i.e., between the rib 3 and the power feeding member 4).

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electric dust collector capable of firmly fastening a power feeding member to a high voltage application unit without a contact failure.

That is, an object of the present invention is to provide an electric dust collector capable of preventing or minimizing a contact failure between a high voltage application part and a power feeding member.

Another object of the present invention is to provide an electric dust collector capable of uniformly and stably applying a predetermined high voltage to a plurality of high voltage electrode plates.

Another object of the present invention is to provide an electric dust collector that can ensure good contact between a high voltage application unit and a power feeding member by the shapes of the high voltage application unit and the power feeding member itself without using a separate fastening member such as a bolt.

Technical scheme for solving problems

The present invention has been made to achieve the above object, and an electric dust collector according to an embodiment of the present invention includes: a charging section that charges dust particles in the air; and a dust collecting section that collects the dust particles charged in the charging section, characterized in that the dust collecting section includes: a plurality of high-pressure plates arranged in parallel to the air blowing direction and applied with a predetermined voltage; a plurality of dust collecting plates arranged in parallel with the air supply direction and arranged between the adjacent high-pressure plates; a connecting part connecting the end of the high pressure plate; and a power supply member coupled to the connection unit to apply a voltage to the high voltage board, wherein the connection unit is provided with one or more elastic fastening portions, and the power supply member is provided with one or more fastening holes through which the elastic fastening portions can penetrate and fasten.

The elastic fastening part may be formed to be able to protrude from a side surface of the connection part toward the fastening hole formed at a side surface of the power supply member.

The elastic fastening part is formed with a slit extending in a longitudinal direction of the elastic fastening part, and a side surface of the power supply member provided at an outer periphery of the fastening hole may be fastened in the slit.

The elastic fastening portion may include: the extension part is perpendicular to the side surface of the connecting part and extends towards the direction far away from the side surface of the connecting part; and a fastening body extending from the extension part by a preset length along a length direction of the connection part.

The slit may be formed between a side surface of the connecting part and a first surface of the fastening body facing the side surface of the connecting part.

The side of the power supply member is formed with a protrusion, and the elastic fastening portion is formed with a recess fastened to the protrusion.

The protrusion may be formed to protrude outward from a side surface of the power supply member, and the recess may be formed at the first surface of the fastening body.

The protrusion may be formed to protrude in a hemispherical shape from a side surface of the power feeding member, and the recess may be formed in a groove shape extending in a height direction of the first surface.

The recess may extend in a height direction to cross the first surface so as to be able to open both ends.

The distance between the protrusion and the recess may be the same as the length of the slit before the side surface of the power supply member provided at the outer periphery of the fastening hole is inserted into the slit.

The side surface of the power feeding member provided on the outer periphery of the fastening hole is inserted into the slit by sliding, and the protrusion is disposed so as to be spaced apart from the fastening hole in a direction opposite to the sliding direction.

In addition, a plurality of the elastic fastening parts may be provided at a predetermined interval along a length direction of the connection part, and a plurality of the fastening holes may be provided at a predetermined interval along a length direction of the power supply member to correspond to the elastic fastening parts.

Preferably, the plurality of high-pressure plates and the connecting portion are integrally formed and are formed of a resin material.

In addition, according to another embodiment of the present invention, the connection portion includes: upper side; and a side surface extending downward from a first end of the upper surface, the elastic fastening portion being formed on the upper surface of the connecting portion, the elastic fastening portion may include: an elastic part protruding from a first end to a second end of the upper surface; and a protrusion portion provided to the elastic portion to protrude upward.

The upper surface of the connecting portion may be formed with a cut portion surrounding both side portions and a distal end of the elastic portion.

In addition, the connection portion may include a space portion formed below the elastic portion.

The protrusion may be formed to protrude upward at a front end of the elastic part.

The plurality of high-pressure plates and the connecting portion may be integrally formed of a resin material.

The power feeding member may be provided with an -shaped cross section that opens to the connection portion.

A height of a side surface of the connection part may correspond to a distance between an upper surface and a lower surface of the power supply member.

The length and width of the fastening hole may be formed to be greater than or equal to the length and width of the protrusion.

The elastic fastening parts may be provided in plurality at predetermined intervals along a length direction of the connection part, and the fastening holes may be provided in plurality at predetermined intervals along a length direction of the power supply member to correspond to the elastic fastening parts.

The side surface of the connecting part is provided with more than one positioning protruding part which protrudes towards the power supply component, and the side surface of the power supply component is provided with more than one positioning hole which is inserted by the positioning protruding part.

In addition, the positioning protrusion can be coupled to the positioning hole by being forcibly inserted into the positioning hole.

Further, before the elastic fastening portion engages the fastening hole, the height of the positioning projection may be determined so that a part of the positioning projection can be clamped by the positioning hole.

Effects of the invention

According to the present invention, it is possible to provide an electric dust collector in which a power feeding member is firmly fixed to a high voltage application unit without contact failure.

In addition, according to the present invention, it is possible to provide an electric dust collector that prevents or minimizes contact failure between a high voltage application part and a power supply member.

In addition, according to the present invention, it is possible to provide an electric dust collector that uniformly and stably applies a predetermined high voltage to a plurality of high-voltage electrode plates.

Further, according to the present invention, it is possible to provide an electric dust collector that can ensure good contact between a high-voltage application unit and a power feeding member by the shapes of the high-voltage application unit and the power feeding member themselves without using a separate fastening member such as a bolt.

Drawings

Fig. 1 is a diagram showing a connection relationship between a high voltage application unit and a power supply member in a conventional dust collection unit.

Fig. 2 is a conceptual view of an electric dust collector according to the present invention.

Fig. 3 is a view showing a dust collecting part of an electric dust collector according to the present invention.

Fig. 4 is a diagram showing a combination relationship of a plurality of members constituting the dust collecting part according to the embodiment (first embodiment) of the present invention.

Fig. 5 is a diagram showing the arrangement state of a plurality of members constituting the dust collecting section according to an embodiment (first embodiment) of the present invention.

Fig. 6A, 6B, and 6C are views showing a coupling relationship between a connection portion of a high pressure plate and a power feeding member according to an embodiment (first embodiment) of the present invention.

Fig. 7 is a diagram showing a state after a connecting portion of a high pressure plate and a power supply member are combined according to an embodiment (first embodiment) of the present invention.

Fig. 8 is a diagram showing a combination relationship of a plurality of members constituting a dust collecting part according to another embodiment (second embodiment) of the present invention.

Fig. 9 is a view showing an arrangement state of a plurality of members constituting a dust collecting part according to another embodiment (second embodiment) of the present invention.

Fig. 10 is a view showing a coupling relationship of a connecting portion of a high pressure plate and a power feeding member according to another embodiment (second embodiment) of the present invention.

Fig. 11 is a view showing a state after a connecting portion of a high pressure plate and a power supply member are combined according to another embodiment (second embodiment) of the present invention.

Description of the reference numerals

100 charging part 200 dust collecting part

210 high pressure plate 220 dust collecting plate

230 first connection 240 second connection

250 elastic fastening part 300 power supply member

Detailed Description

Hereinafter, an electric dust collector according to the present invention will be described in detail with reference to the accompanying drawings. The drawings show exemplary aspects of the present invention, which are merely for illustrating the present invention in detail, and do not limit the technical scope of the present invention.

The same or corresponding components are given the same reference numerals and overlapping description thereof is omitted regardless of the reference numerals, and the sizes and shapes of the respective components shown in the drawings may be expanded or reduced for convenience of description.

The overall operation of the electric dust collector of the present invention will be described with reference to fig. 2. Fig. 2 is a conceptual view of an electric dust collector according to the present invention.

Referring to fig. 2, the electric dust collector apparatus 10 of the present invention may include a dust collecting part 200 for collecting dust particles P in the air.

The charging section 100 includes: a wire discharge portion 110 to which a predetermined high voltage is applied; and one or more grounding plates 120 disposed to face the electric wire discharge part 110.

The ground plate 120 may be configured to be spaced apart from the wire discharging part 110 by a preset interval. For example, the ground plate 120 may be spaced apart from the wire discharge portion 110 in a direction perpendicular to the air blowing direction a. Therefore, air can flow in the air blowing direction a shown in the drawing between the wire discharge portion 110 and the ground plate 120.

When a preset high voltage is applied to the wire discharge part 110, corona discharge is generated between the wire discharge part 110 and the ground plate 120 facing thereto.

At this time, cations or anions can be generated based on the polarity of the voltage applied to the wire discharge portion 110, and the thus generated cations or anions can charge the dust particles P in the air.

For example, the negative ions supply electrons to the dust particles P to charge the dust particles P as a negative electrode, and the positive ions snatch electrons from the dust particles P to charge the dust particles P as a positive electrode.

In order to improve the dust collection efficiency in the dust collection unit 200 described later, the polarity of the voltage applied to the wire discharge unit 110 is preferably the same as the polarity of the voltage applied to the dust collection unit 200.

Further, more ozone is generated when the high voltage of the cathode is applied than when the high voltage of the anode is applied to the charging unit 100.

Therefore, considering the amount of ozone generated (i.e., to reduce the amount of ozone generated), it is preferable to apply a high voltage of an anode to both the wire discharging part 110 and the dust collecting part 200 of the charging part 100 so as to charge the dust particles P as an anode.

The wire discharge portion 110 and the ground plate 120 may be arranged parallel to the air blowing direction a. Accordingly, the dust particles P in the air are charged in the process that the air passes between the wire discharging part 110 and the dust collecting plate 120.

The dust collecting part 200 may be disposed at the rear end of the charging part 100 or downstream along the air blowing direction a.

The dust collection part 200 may include: one or more high voltage plates 210 to which a predetermined high voltage is applied; and one or more dust collecting plates 220 disposed to face the high pressure plate 210.

The high pressure plate 210 may be configured to be spaced apart from the dust collection plate 220 by a preset interval. For example, the high pressure plate 210 may be spaced apart from the dust collection plate 220 in a direction perpendicular to the air blowing direction a. Therefore, air can flow in the air blowing direction a shown in the figure between the high pressure plate 210 and the dust collection plate 220.

In the process of the air passing through the dust collecting part 200, the charged dust particles P in the air can be collected to the dust collecting plate 220. That is, the dust particles P charged in the air may be collected to the dust collecting plate 220 according to an electric field formed between the high pressure plate 210 and the dust collecting plate 220.

The fan 400 may be provided behind or downstream of the dust collecting part 200 with respect to the air blowing direction a. By driving the fan 400, air can be discharged to the outside through the charging unit 100 and the dust collecting unit 200 in this order.

In addition, the dust collecting part 200 may include a plurality of high pressure plates 210 and a plurality of dust collecting plates 220 formed of resin or semi-insulating resin, and a high voltage may be applied to the plurality of high pressure plates 210 from an external power source.

At this time, a power supply means for applying a voltage (e.g., a preset high voltage) supplied from an external power source may be fastened on the plurality of high pressure plates 210.

Hereinafter, a fastening structure of the high voltage board 210 and the power feeding member will be specifically described with reference to other drawings.

Fig. 3 is a view showing a dust collecting part of the electric dust collector according to the present invention.

Referring to fig. 3, the dust collection part 200 may include: a plurality of high pressure plates 210 to which a preset voltage is applied; a plurality of dust collecting plates 220 formed to be grounded; and a first connection part (or rib, 230) connecting ends of the plurality of high-pressure plates 210.

The plurality of high-pressure plates 110 may be arranged in parallel with the blowing direction a. That is, the plurality of high-pressure plates 110 extend so as to cross the air blowing direction a, and both surfaces of each high-pressure plate 110 of the plurality of high-pressure plates 110 may be parallel to the air blowing direction a.

For example, the length direction of each of the plurality of high pressure plates 110 may be perpendicular to the air blowing direction a.

The plurality of high-pressure plates 210 and the first connection part 230 may be formed in one body by injection molding. In addition, the plurality of high-pressure plates 210 and the first connection part 230 may be formed of resin or semi-insulating resin.

The dust collecting plate 220 may be disposed parallel to the air blowing direction a. That is, the plurality of dust collecting plates 220 extend to cross the air blowing direction a, and both surfaces of each dust collecting plate 220 of the plurality of dust collecting plates 220 may be parallel to the air blowing direction a.

For example, the length direction of each dust collecting plate 220 of the plurality of dust collecting plates 220 may be perpendicular to the air blowing direction a.

The dust collection plate 220 may be disposed between adjacent high pressure plates 210. That is, each of the plurality of dust collection plates 220 may be disposed between two adjacent high pressure plates 210. In other words, the plurality of high pressure plates 210 and the plurality of dust collection plates 220 may be alternately arranged with each other.

Accordingly, when a preset high voltage is applied to the plurality of high pressure plates 210, an electric field can be formed between each high pressure plate 210 and the adjacent dust collection plate 220.

The power supply member 300 connected to the external power source may be fastened to the first connection part 230. The power supply member 300 may be formed of a conductive material. For example, the power supply member 300 may be formed of a metal material.

The power supply means 300 may be formed to be able to apply a preset voltage to the high pressure plate 210. That is, the power supply member 300 may be coupled to the first connection part 230 to apply a predetermined voltage to the plurality of high-pressure plates 210. In other words, the power supply member 300 may be formed to be able to apply a voltage supplied from an external power source or a power supply portion to the plurality of high voltage plates 210.

The dust collection part 200 may further include a frame 201 forming an external appearance. The frame 201 may be fastened to the outer circumferences of the plurality of high pressure plates 210 and the plurality of dust collection plates 220.

Specifically, the frame 201 may be formed to fix the plurality of high-pressure plates 210 and the plurality of dust collection plates 220 in a state in which the plurality of high-pressure plates 210 and the plurality of dust collection plates 220 are alternately arranged.

The frame 201 may be formed with more than one fixing portion 202. The fixing portion 202 may be formed to be capable of being fixed by pressing at least one of a first positioning protrusion and a second positioning protrusion, which will be described later, provided to the first connecting portion 230.

Both end portions of the plurality of high pressure plates 210 may be provided with the first connection parts 230. The two first connection portions 230 may be disposed at both end portions of the plurality of high pressure plates 210.

At this time, the power supply member 300 may be coupled to one of the two first connection parts 230 or to both of the two first connection parts 230, respectively.

Hereinafter, for convenience of explanation, the power feeding member 300 will be described with reference to a diagram of a state in which it is coupled to one of the two first coupling parts 230.

The frame 201 may be formed to fix positions of the plurality of high pressure plates 210 and the plurality of dust collection plates 220 in a state where the power supply member 300 is coupled to the first coupling part 230.

In addition, when a contact failure occurs between the first connection part 230 and the power supply member 300, dust collection performance of the dust collection part 200 may be reduced.

Hereinafter, a fastening structure of the first connection part 230 and the power feeding member 300, which can maintain a good contact state between the first connection part 230 and the power feeding member 300 even if the first connection part 230 formed of a resin material is deformed, will be described in detail with reference to other drawings.

Fig. 4 is a view showing a coupling relationship of members constituting a dust collecting part according to an embodiment (first embodiment) of the present invention, and fig. 5 is a view showing a disposition state of members constituting a dust collecting part according to an embodiment (first embodiment) of the present invention.

Referring to fig. 4 and 5, both end portions of the plurality of high-pressure plates 210 may be connected by a first connection portion 230. Both end portions of the plurality of dust collecting plates 220 may be connected by the second connection portion 240.

Both end portions of the plurality of high pressure plates 210 may be formed to be symmetrical to each other, and both end portions of the plurality of dust collecting plates 220 may be formed to be symmetrical to each other.

That is, the plurality of high-pressure plates 210 may be formed to be symmetrical with each other on both sides with respect to the center in the longitudinal direction thereof. The plurality of dust collecting plates 220 may be formed to be symmetrical with each other on both sides with respect to the center in the longitudinal direction.

The plurality of high pressure plates 210 and the plurality of dust collecting plates 220 are different in whether they are coupled to the power supply member 300 or grounded.

That is, the connection part 230 of the plurality of high-voltage plates 210 is coupled to the power supply member 300, and a predetermined high voltage is applied to the plurality of high-voltage plates 210. Unlike this, the plurality of dust collection plates 220 are not combined with the power supply member 300, but are grounded.

As shown in fig. 4, the plurality of high pressure plates 210 and the plurality of dust collection plates 220 may be alternately arranged one by one.

That is, the dust collecting plates 220 may be disposed between the adjacent high pressure plates 210, respectively. In other words, the high pressure plates 210 may be respectively disposed between the adjacent dust collecting plates 220.

A first positioning protrusion 239 protruding outward may be formed on the first connection portion 230. The first positioning protrusion 239 may be formed to protrude from the first connection portion 230 toward a direction opposite to the high pressure plate 210. In addition, a plurality of the first positioning protrusions 239 may be formed at a predetermined interval along the length direction of the first connection part 230.

The power supply member 300 may be formed with positioning holes 309 corresponding to the first positioning protrusions 239. That is, the side surface 303 of the power supply member 300 may be formed with one or more positioning holes 309 into which the first positioning protrusions 239 are inserted. The plurality of positioning holes 309 may be formed at predetermined intervals along the length direction of the power supply member 300 to correspond to the first positioning protrusions 239.

Therefore, a position for fastening the power supply member 300 on the first connection part 230 can be easily determined. That is, the first positioning projection 239 and the positioning hole 309 can improve the ease of assembling the power feeding member 300 to the first connecting portion 230.

The width of the first positioning protrusion 239 may correspond to the width of the positioning hole 309.

The length of the first positioning projection 239 may be formed to be shorter than the length of the positioning hole 309. That is, in a state where the first positioning projection 239 is sandwiched in the positioning hole 309, the first positioning projection 239 is allowed to move in the longitudinal direction of the positioning hole 309.

Although the second connection part 240 does not couple the power supply member 300, the second connection part 240 may be formed with a second positioning protrusion 249 protruding to the outside. The second positioning projection 249 may be formed in the same form as the first positioning projection 239. This is to enable the plurality of high pressure plates 210 and the plurality of ground plates 220 to be interchanged with each other.

That is, the plurality of high pressure plates 210 integrally formed with the first connection parts 230 may be formed in the same form as the plurality of dust collection plates 220 integrally formed with the second connection parts 240.

For example, the plurality of high pressure plates 210 integrally formed with the first connection parts 230 may be formed as a first member, and the plurality of dust collection plates 220 integrally formed with the second connection parts 240 may be formed as a second member.

The first member and the second member may be made of the same material and formed in the same shape. Also, the power supply member 300 is coupled to the first connection portion 230 of the first part, and the second part may be grounded. Therefore, the manufacturing cost of the dust collecting part 200 can be saved and the assembly can be easily ensured.

Referring to fig. 5, the power feeding member 300 may be coupled to the first connection part 230 of the plurality of high pressure plates 210 in a state in which the plurality of high pressure plates 210 and the plurality of dust collection plates 220 are alternately arranged.

In this state, the plurality of high pressure plates 210, the plurality of dust collection plates 220, and the power supply member 300 can be fixed by the frame 201 described above. That is, the plurality of high-pressure plates 210, the plurality of dust collecting plates 220, and the power feeding member 300 can be held in a fixed state at a predetermined position by the frame 201 described above.

Specifically, the first positioning projection 239 may be formed to pass through the positioning hole 309 of the power supply member 300. That is, in a state where the first connection part 230 is coupled to the power feeding member 300, the first positioning projection 239 may penetrate through the positioning hole 309 to project to the outside of the power feeding member 300. At this time, at least one of the first positioning protrusion 239 and the second positioning protrusion 249 may be fixed by the fixing portion 202 provided to the frame 201, which is described above (see fig. 3).

Hereinafter, a structure capable of maintaining a good contact state or a good coupling state of the first connection part 230 and the power feeding member 300 will be described in more detail with reference to other drawings.

Fig. 6A, 6B, and 6C are views showing a coupling relationship between a connection portion of a high pressure plate and a power feeding member according to an embodiment (first embodiment) of the present invention. Specifically, fig. 6A shows a state before the first connecting portion is coupled to the power feeding member, fig. 6B shows a state in which the elastic fastening portion provided to the first connecting portion is inserted into the fastening hole provided to the power feeding member, and fig. 6C shows a state in which the side surface of the power feeding member is slidably coupled to the slit provided to the elastic fastening portion.

Hereinafter, the elastic fastening portions to be described may be provided to both the first connection portion 230 and the second connection portion 240, but for convenience of description, the elastic fastening portions provided to the first connection portion 230 will be described as references.

In fig. 6A, for the sake of understanding, the X axis represents the longitudinal direction, the Y axis represents the height direction, and the Z axis represents the width direction.

Referring to fig. 6A, 6B, and 6C, power feeding member 300 may be inserted into and coupled to first connection portion 230 of high-voltage board 210. For example, the first connection part 230 may be formed in a rib shape protruding toward the power supply member 300.

Also, the power supply member 300 may be provided with a fastening space 308, and the fastening space 308 may be used to dispose at least one side surface of the first connection part 230. That is, the power feeding member 300 may include a fastening space 308 for disposing the first connection part 230 therein. In other words, the power feeding member 300 may include a plurality of surfaces surrounding one side surface of the first connection part 230.

In the illustrated embodiment, the power feeding member 300 has three surfaces and may have an "" cross section, that is, the power feeding member 300 may have a "" cross section opened to the first connection portion 230.

The first connection part 230 may be provided with more than one elastic fastening part 250. For example, a plurality of the elastic fastening parts 250 may be provided at a predetermined interval along the length direction of the first connection part 230. The elastic fastening part 250 may be integrally formed with the first connection part 230 and formed of resin or semi-insulating resin to have elasticity.

The power feeding member 300 may have one or more fastening holes 350, and the fastening holes 350 may be formed to penetrate and fasten the elastic fastening part 250. For example, a plurality of the fastening holes 350 may be provided at a predetermined interval along the length direction of the power supply member 300. At this time, the plurality of fastening holes 350 may be provided to be able to correspond to the plurality of first connection parts 230.

As the elastic fastening part 250 is clamped in the fastening hole 350, the power supply member 300 is firmly fastened to the first connection part 230 while maintaining a good contact state between the first connection part 230 and the power supply member 300.

The elastic fastening part 250 may be formed to protrude from the side 233 of the first connection part 230 toward the power supply member 300. That is, the elastic fastening part 250 may be formed to protrude toward the side 303 of the power supply member 300. Specifically, the elastic fastening part 250 may be formed to be able to protrude toward the fastening hole 350 formed at the side surface 303 of the power supply member 300.

In a state where the power supply member 300 is fastened to the first connection part 230, the upper surface 231 of the first connection part 230 may contact the upper surface 301 of the power supply member 300, and the side surface 233 of the first connection part 230 may contact the side surface 303 of the power supply member 300. In addition, the lower surface of the first connection part 230 may contact the lower surface of the power supply member 300.

The height of the side 233 of the connection part 230 may be determined to correspond to the distance between the upper and

lower faces

301 and 300 of the power supply member.

The elastic fastening part 250 may be formed at the side 233 of the first connection part 230.

The elastic fastening part 250 may be formed with a slit 251 extending along a length direction of the elastic fastening part 250. That is, the slit 251 may be formed in a shape in which a part of the elastic fastening part 250 is cut along the longitudinal direction of the elastic fastening part 250.

The side 303 of the power supply member 300 disposed at the outer circumference of the fastening hole 350 may be fastened in the slit 251. That is, a part of the side surface 303 of the power supply member 300 can be fastened in the slit 251 in a sliding manner.

For example, the entire power feeding member 300 is moved in the extending direction of the slit 251, and a part of the side surface 303 of the power feeding member 300, which is provided on the outer periphery of the fastening hole 350, can be slidably fastened to the slit 251.

As described above, since the part of the side surface 303 of the power feeding member 300 is fastened to the slit 251 of the elastic fastening portion 250 in a state where the elastic fastening portion 250 is sandwiched in the fastening hole 350, the power feeding member 300 can be firmly coupled to the first connection portion 230.

In addition, in order to fasten a part of the side surface 303 of the power feeding member 300 to the slit 251 of the elastic fastening portion 250, the power feeding member 300 itself should be moved in the longitudinal direction with respect to the first connection portion 230. Therefore, the length of the first positioning protrusion 239 described above is preferably longer than the length of the positioning hole 309, and the difference in length between the first positioning protrusion 239 and the positioning hole 309 may correspond to the length of the slit 251.

Specifically, the elastic fastening part 250 may include: an extension portion 253 vertically extending from the first connection portion 230; and a fastening body 255 extending from the extension 253.

The extension 253 may extend from the side surface 233 of the first connection portion 230 in a direction away from the side surface 233 of the first connection portion 230. In addition, the extension 253 may extend in a direction perpendicular to the side surface 233 of the first connection portion 230.

The fastening body 255 may be formed to extend from the extension 253. Specifically, the fastening body 255 may be formed to extend from the extension portion 253 in a predetermined length along the length direction of the first connection portion 230.

In this case, the tightening body 255 includes: a first face facing a side surface 233 of the first connection part 230; and a second face 255 "disposed opposite the first face 255'. That is, the first surface 255 'faces the high pressure plate 210, and the second surface 255 ″ is disposed opposite to the first surface 255'.

At this time, the gap 251 may be formed between the side surface 233 of the first connection part 230 and the first surface 255'.

Therefore, in a state where the fastening body 255 of the elastic fastening portion 250 penetrates the fastening hole 350, a part of the side surface 303 of the power feeding member 300 can be slidably sandwiched in the slit 251.

The width of the gap 251 may be formed to be the same as or thinner than the thickness of the side 303 of the power supply member 300.

In the process that the part of the side surface 303 of the power supply member 300 is clamped into the gap 251, the width of the gap 251 is increased by the elastic force of the extension 253 and the fastening body 255, so that the side surface 303 of the power supply member 300 can be easily inserted into the gap 251.

In a state where a part of the side surface 303 of the power feeding member 300 is completely sandwiched in the gap 251, the side surface 303 of the power feeding member 300 can be fixed by pressing the side surface 233 of the first connecting portion 230 by the elastic force of the extension portion 253 and the fastening body 255.

In addition, the side 303 of the power supply member 300 may be formed with a fastening protrusion 307. Also, a concave portion 257 corresponding to the fastening protrusion 307 may be formed on the fastening portion 250. That is, the fastening protrusion 307 can be fastened in the concave portion 257.

In a state where a part of the side surface 303 of the power feeding member 300 is sandwiched by the slit 251, the positions of the fastening protrusion 307 and the concave portion 257 can be determined so that the fastening protrusion 307 is fastened in the concave portion 257.

As the fastening projection 307 is caught by the concave portion 257, the movement of the power supply member 300 in the longitudinal direction with respect to the first connection portion 230 can be restricted.

Specifically, the fastening protrusion 307 may be formed to protrude outward from the side surface 303 of the power supply member 300. That is, the fastening protrusion 307 may be formed to protrude from the side 303 of the power supply member 300 toward the opposite side of the first connection part 230. Also, the concave portion 257 may be formed at the first face 250' of the fastening body 255.

Therefore, when the part of the side surface 303 of the power feeding member 300 is completely caught by the slit 251, the fastening projection 307 can be caught by the concave portion 257.

At this time, the fastening protrusion 307 may be formed to protrude in a hemispherical form from the side 303 of the power supply member 300. The concave portion 257 may be formed in a groove shape extending in the height direction or the width direction of the first surface 250'.

That is, the concave portion 257 may be formed to extend to the entire width direction of the first face 250'. This is because the fastening of the fastening protrusion 307 and the concave portion 257 is only required to restrict the movement of the power supply member 300 in the longitudinal direction with respect to the first connection portion 230.

Therefore, even if the first connection portion 230 is deformed and the position of the projection 207 in the height direction or the width direction is changed, the projection 307 can be easily fastened in the concave portion 257.

The concave portion 257 may be formed to be open at both ends thereof. That is, the concave portion 257 may extend to the entire height of the first face 250' in a manner that both ends are open. In other words, the concave portion 257 may be formed to cross the first face 250' in the height direction in such a manner that the upper and lower ends thereof are opened.

Therefore, the fastening state of the concave portion 257 and the fastening projection 307 can be confirmed when viewed from both end portions of the concave portion 257. That is, in a state where a part of the side surface 303 of the power feeding member 300 is fastened in the slit 251, whether or not the fastening protrusion 307 of the concave portion 257 is fastened can be easily grasped.

The fastening projection 307 may be spaced apart from the fastening hole 350 in a direction opposite to a sliding direction of the side surface 303 of the power feeding member 300 with respect to the slit 251. Accordingly, the fastening protrusion 307 can be fastened in the concave portion 257 while the partial sliding of the side surface 303 of the power supply member 300 is engaged in the slit 251.

In addition, before the side surface 303 of the power feeding member 300 disposed at the outer circumference of the fastening hole 350 is inserted into the slit 251, it is preferable that the distance between the fastening protrusion 307 and the concave portion 257 is the same as the length of the slit 251.

That is, before the side 303 of the power supply member 300 is inserted into the slit 251 in a state where the elastic fastening portion 250 penetrates the fastening hole 350, the distance between the fastening protrusion 307 and the concave portion 257 may be the same as the length of the slit 251.

This is to allow the fastening protrusion 307 and the concave portion 257 to be engaged with each other in a state where the side surface 303 of the power feeding member 300 is partially inserted into the slit 251.

In addition, in a state where the elastic fastening part 250 is inserted into the fastening hole 350, the power feeding member 300 should be slid in a longitudinal direction of the first connection part 230. Therefore, as explained previously, the lengths of the first positioning projection 239 and the positioning hole 309 are determined in such a manner that the power supply member 300 can slide with respect to the first connecting portion 230. This will be specifically described below with reference to other drawings.

Fig. 7 is a view showing a state in which a connecting portion of a high pressure plate and a power feeding member are combined according to an embodiment (first embodiment) of the present invention.

Referring to fig. 7, on the first connecting part 230, the elastic fastening part 250 and the first positioning protrusion 239 are disposed at different positions from each other.

Specifically, the elastic fastening part 250 and the first positioning protrusion 239 may be spaced apart from each other along the longitudinal direction of the first connection part 230.

In addition, a plurality of the elastic fastening parts 250 and the first positioning protrusions 239 may be provided along the length direction of the first connecting part 230.

In a state where the elastic fastening part 250 is inserted into the fastening hole 350, the power feeding member 300 can slide along the longitudinal direction of the first connection part 230. For example, the power supply member 300 may slide in the direction of arrow S in fig. 7.

At this time, as described above, the power feeding member 300 is slidable along the longitudinal direction of the first connection part 230 by the length D of the slit 251 provided in the elastic fastening part 250.

Accordingly, the length of the positioning hole 309 may be formed longer than the length of the first positioning projection 239.

That is, it is preferable that the length of the positioning hole 309 is formed to be longer than the length of the first positioning protrusion 239 so that the power supply member 300 can slide along the length direction of the first connection part 230 by the length D of the slit 251.

For example, the length D of the gap 251 is the same as the difference D between the length of the positioning hole 309 and the length of the first positioning protrusion 239.

Specifically, the first positioning protrusion 239 and the positioning hole 309 may be formed such that the first positioning protrusion 239 can move along the length direction of the positioning hole 309 when the power supply member 300 slides along the length direction of the first connection portion 230.

Before the elastic fastening part 250 penetrates the fastening hole 350, the protruding width of the first positioning protrusion 239 may be determined such that a part of the first positioning protrusion 239 can be caught in the positioning hole 350.

That is, before the fastening body 255 of the elastic fastening part 250 is caught in the fastening hole 350, the height of the first positioning protrusion 239 can be determined such that a part of the first positioning protrusion 239 can be caught in the positioning hole 350.

Therefore, when the power supply member 300 is coupled to the first coupling part 230, the elastic fastening part 250 and the fastening hole 350 can be easily positioned to correspond.

Hereinafter, the connection relationship of members provided in the dust collecting part according to another embodiment (second embodiment) of the present invention will be described with reference to other drawings.

Fig. 8 is a view showing a coupling relationship of members constituting a dust collecting part according to another embodiment (second embodiment) of the present invention, and fig. 9 is a view showing a disposition state of members constituting a dust collecting part according to another embodiment (second embodiment) of the present invention.

Referring to fig. 8 and 9, the present embodiment is similar to the first embodiment described with reference to fig. 4 and 5 except that a fastening hole is not formed in the side surface 303 of the power feeding member 300.

For example, as in the first embodiment, a positioning hole 309 corresponding to the first positioning projection 239 may be formed on the power supply member 300. That is, one or more positioning holes 309 into which the first positioning protrusions 239 are inserted may be formed on the side 303 of the power supply member 300. The plurality of positioning holes 309 may be formed at predetermined intervals along the length direction of the power supply member 300 to correspond to the first positioning protrusions 239.

Therefore, a position for fastening the power supply member 300 to the first connection part 230 can be easily determined. That is, the first positioning projection 239 and the positioning hole 309 can improve the ease of assembling the power feeding member 300 to the first connecting portion 230.

In addition, unlike the first embodiment, in the second embodiment, the first positioning projection 239 may be formed to be able to be fastened so as to be forcibly sandwiched in the positioning hole 309. That is, the length and width of the first positioning projection 239 and the length and width of the positioning hole 309 can be determined so that the first positioning projection 239 can be forcibly sandwiched and fastened in the positioning hole 309.

For example, the length and width of the first positioning protrusion 239 may be the same as those of the positioning hole 309.

As the first positioning protrusion 239 and the positioning hole 309 are forcibly clamped and fastened, even if the shape of the first connection portion 230 is deformed, a good fastening state and a good contact state of the first connection portion 230 and the power feeding member 300 can be maintained.

Although the second connection part 240 is not coupled to the power supply member 300, a second positioning protrusion 249 protruding outward may be formed on the second connection part 240. The second positioning projection 249 may be formed in the same form as the first positioning projection 239. This is to allow the plurality of high pressure plates 210 and the plurality of ground plates 220 to be interchanged with each other.

That is, the plurality of high pressure plates 210 integrally formed with the first connection part 230 and the plurality of dust collection plates 220 integrally formed with the second connection part 240 may be formed in the same form.

The first member and the second member may be formed of the same material in the same form. Also, the first connection part 230 of the first part may be combined with the power supply member 300, and the second part may be grounded. Thus, the manufacturing cost of the dust collection part 200 is reduced, and the ease of assembly is ensured.

Hereinafter, a structure capable of maintaining a good contact state or a good coupling state between the first connection part 230 and the power feeding member 300 will be described with reference to other drawings.

Fig. 10 is a view showing a coupling relationship of a coupling part of a high pressure plate and a power feeding member according to another embodiment (second embodiment) of the present invention, and fig. 11 is a view showing a state after the coupling part of the high pressure plate and the power feeding member according to another embodiment (second embodiment) of the present invention are coupled.

The elastic fastening portions to be described below may be provided on both the first connection portion 230 and the second connection portion 240, and the elastic fastening portions provided on the first connection portion 230 will be described as references for convenience of description.

Referring to fig. 10 and 11, the first connection part 230 of the high voltage board 210 may be sandwiched and coupled by the power supply member 300. For example, the first connection part 230 may be formed in a rib shape protruding toward the power supply member 300.

The power supply member 300 may include a fastening space 308, and the fastening space 308 may be used to dispose at least one side surface of the first connection portion 230. That is, the fastening space 308 for disposing the first connection part 230 is provided inside the power feeding member 300. In other words, the power feeding member 300 includes a plurality of surfaces for surrounding at least one side surface of the first connection portion 230.

In the illustrated embodiment, the power supply member 300 is provided with three faces, and the cross-section may be formed in an "" form, that is, the power supply member 300 may have a section in a "" form opened to the first connection part 230.

The first connection part 230 may be provided with more than one elastic fastening part 250. For example, a plurality of the elastic fastening parts 250 may be provided at predetermined intervals along the length direction of the first connection part 230. The elastic fastening part 250 is integrally formed with the first connection part 230, and is formed of resin or semi-insulating resin to have elasticity.

The power supply member 300 may be formed with one or more fastening holes 350, and the fastening holes 350 are formed to be engaged with the elastic fastening portions 250. For example, a plurality of the fastening holes 350 may be provided at a predetermined interval along the length direction of the power supply member 300. At this time, a plurality of the fastening holes 350 may be provided to correspond to a plurality of the first connection parts 230.

As the elastic fastening part 250 is fastened to the fastening hole 350, the power supply member 300 is firmly fastened to the first connection part 230 while maintaining a good contact state between the first connection part 230 and the power supply member 300.

In order to improve the strength of the first connection portion 230, the first connection portion 230 may be formed with more than one recess 238.

The first connection portion 230 may be provided with: an upper face 231; and a side surface 233 extending downward from the first end 231' of the upper surface 231. An upper surface 231 of the first connection part 230 may contact an upper surface 301 of the power supply member 300, and a side surface 233 of the first connection part 230 may contact a side surface 303 of the power supply member 300. In addition, a lower surface of the first connection part 230 may contact a lower surface of the power supply member 300.

lower faces

301 and 300 of the power supply member.

The elastic fastening part 250 may be formed on the upper surface 231 of the first connection part 230.

The elastic fastening part 250 may include: an elastic portion 2510 protruding from the first end 231' of the upper surface 231 toward the second end 231 ″; and a protrusion 2530 provided in the elastic portion 2510 and protruding upward.

The projection 2530 has a predetermined length. At this time, the length of the projection 2530 is the length of the fastening hole 350 or less, and the width of the projection 2530 may be the width of the fastening hole or less.

The cross section of the projection 2530 may be a semi-circle. Therefore, when the power feeding member 300 is sandwiched by the first connection part 230, the projection 2530 can be pushed toward the lower side of the upper surface 310 of the power feeding member 300.

When the power feeding member 300 is coupled to the first coupling portion 230, the protrusion portion 2530 is pushed by the upper surface 301 of the power feeding member 300, and the elastic portion 2510 is moved downward. And, the elastic part 2510 is restored while the protrusion 2530 is fastened to the fastening hole 350 of the power supply member 300.

Therefore, the first connection part 230 and the power supply member 300 are firmly coupled by the elastic fastening part 250 and can maintain a good contact state.

Specifically, the upper surface 231 of the first connection portion 230 may be formed with a cut portion 235 surrounding both side portions and the tip of the elastic portion 2510, that is, the cut portion 235 may be formed in the form of "".

Therefore, since the first connection portion 230 is formed of a resin material, the elastic portion 2510 can have an elastic force according to the cut portion 235.

In addition, the first connection portion 230 may be provided with a space portion 237 formed at a lower side of the elastic portion 2510. That is, the space portion 237 may be formed under the elastic portion 2510.

Therefore, when the power feeding member 300 is sandwiched between the first connection portions 230, the elastic portion 2510 can move downward toward the space portion 237 when the upper surface 301 of the power feeding member 300 presses the projection portion 2530.

The protrusion portion 2530 may be formed to protrude upward at the front end of the elastic portion 2510. The projection 2530 can be fastened to the fastening hole 350 in a state where the power feeding member 300 is sufficiently clamped to the first connection part 230.

For example, at least one of the width of the elastic portion 2510 and the position of the projection 2530 may be determined based on the position of the fastening hole 350 provided to the power supply member 300. That is, when the protrusion 2530 is fastened to the fastening hole 350, the position of the protrusion 2530 may be determined so that the side 233 of the first connection part 230 can contact the side 303 of the power supply member 300.

Therefore, if the protrusion 2530 is fastened to the fastening hole 350, the side surface 233 of the first connection part 230 and the side surface 303 of the power supply member 300 can maintain a contact state.

In addition, the protrusion width of the first positioning protrusion 239 may be determined before the elastic fastening part 250 is engaged with the fastening hole 350, so that a part of the first positioning protrusion 239 can be caught in the positioning hole 350.

That is, before the projection 2530 is fastened to the fastening hole 350, the height of the first positioning projection 239 may be determined so that a part of the first positioning projection 239 can be clamped into the positioning hole 350.

Therefore, the power supply member 300 can be further pressed against the first connection portion 230 in a state where the first positioning projection 239 is sandwiched between the positioning holes 350, and the power supply member 300 can be coupled to the first connection portion 230.

As described above, when the power supply member 300 is coupled to the first coupling part 230, the positions of the elastic fastening part 250 and the fastening hole 350 can be easily corresponded.

The preferred embodiments of the present invention described above are disclosed for illustrative purposes, and various modifications, alterations, and additions can be made by those skilled in the art within the scope of the technical idea of the present invention, and such modifications, alterations, and additions should be construed as being included in the scope of the claims described below.

Claims

1. An electric dust collector comprising: a charging section that charges dust particles in the air; and a dust collecting section for collecting the dust particles charged in the charging section, the electrostatic precipitator is characterized in that,

the dust collecting part includes:

a plurality of high-pressure plates arranged in parallel to the air blowing direction and applied with a predetermined voltage;

a plurality of dust collecting plates arranged in parallel to the air blowing direction and arranged between the adjacent high pressure plates;

a connecting part connecting the end of the high pressure plate; and

a power supply member coupled to the connection part to apply a voltage to the high voltage board,

the connecting part is provided with more than one elastic fastening part, the power supply component is provided with a fastening hole for fastening the elastic fastening parts,

the elastic fastening portion is formed with a slit extending in a longitudinal direction of the elastic fastening portion,

the side surface of the power supply member provided at the outer periphery of the fastening hole is slidably inserted into the slit and fastened to the slit,

a protrusion is formed on a side surface of the power feeding member, and the protrusion is spaced from the fastening hole in a direction opposite to the sliding direction.

2. An electric dust collector as set forth in claim 1,

the elastic fastening part is formed to protrude from a side surface of the connection part toward the fastening hole formed at a side surface of the power supply member,

the elastic fastening portion penetrates the fastening hole and is fastened to the fastening hole.

3. An electric dust collector as set forth in claim 2,

the elastic fastening portion includes:

the extension part is perpendicular to the side surface of the connecting part and extends towards the direction far away from the side surface of the connecting part; and

and a fastening body extending from the extension part along a length direction of the connection part by a preset length.

4. An electric dust collector as set forth in claim 3,

the slit is formed between a side surface of the connecting portion and a first surface of the fastening body facing the side surface of the connecting portion.

5. An electric dust collector as set forth in claim 1,

the elastic fastening part is provided with a concave part which is fastened with the bulge.

6. An electric dust collector as set forth in claim 1,

the connecting portion includes: upper side; and

a side surface extending downward from a first end of the upper surface,

the elastic fastening part is formed on the upper surface of the connecting part,

the elastic fastening portion includes: an elastic part protruding from a first end to a second end of the upper surface; and a protrusion provided in the elastic part and protruding upward.

7. An electric dust collector as set forth in claim 6,

the upper surface of the connecting part is provided with a cut part surrounding the two side parts and the front end of the elastic part.

8. An electric dust collector as set forth in claim 6,

the connection portion is provided with a space portion formed below the elastic portion.

9. An electric dust collector as set forth in claim 7,

the protruding portion is formed to protrude upward at a front end of the elastic portion.