KR20190126556A - Electric dust collection divice and air conditioner comprisng the same - Google Patents

Abstract

The present invention relates to an electric dust collection device and an air conditioner including the same. According to the present invention, the electric dust collection device comprises: a charge part charging particles in the air; and a dust collection part collecting the particles charged through the charge part and including a plurality of dust collection plates. The plurality of dust collection plates include base plates extending in a first direction (A) and a second direction (B) perpendicular to the first direction (A), respectively, wherein at least some of the plurality of dust collection plates include a plurality of protrusions protruding from at least one surface of the base plate in a third direction (C) perpendicular to the first direction (A) and the second direction (B). The present invention is easy to remove oil particles collected in the dust collection plate and can be used semi-permanently by washing the dust collection plate.

Description

Electric dust collection device and air conditioner including the same {Electric dust collection divice and air conditioner comprisng the same}

The present invention relates to an electrostatic precipitator and an air conditioner including the same.

An air conditioner is a device for maintaining air in a predetermined space in a state most suitable for use and purpose. In general, the air conditioner includes a compressor, a condenser, an expansion device, and an evaporator, and a refrigeration cycle for performing the compression, condensation, expansion, and evaporation processes of the refrigerant is driven to cool or heat the predetermined space. .

The predetermined space may be variously proposed according to the place where the air conditioner is used. For example, when the air conditioner is disposed in a home or an office, the predetermined space may be an indoor space of a house or a building.

When the air conditioner performs the cooling operation, the outdoor heat exchanger provided in the outdoor unit functions as a condenser, and the indoor heat exchanger provided in the indoor unit performs an evaporator function. On the other hand, when the air conditioner performs a heating operation, the indoor heat exchanger functions as a condenser and the outdoor heat exchanger performs an evaporator function.

The air conditioner includes a suction part through which the air in the indoor space is sucked and a discharge part through which the air sucked through the suction part is heat-exchanged in the heat exchanger and discharged into the indoor space. In addition, an air conditioner may be provided with a blowing fan for generating an air flow from the suction part to the discharge part.

In addition, the air conditioner may include an electrostatic precipitator for collecting dust particles in the air. In connection with such an electrostatic precipitator, the present applicant has filed and published the following prior document.

<Previous Document 1>

1.Publication No. 10-2017-0051145 (Publication date: May 11, 2017)

2. Name of invention: Electrostatic precipitator and air conditioner including same

As disclosed in the prior document 1, the electrostatic precipitator includes a charged portion for charging the dust particles in the air and a dust collector for collecting the dust particles charged in the charged portion. The dust collecting part includes a plurality of dust collecting plates extending in parallel with the flow direction of air so that dust particles in the air are collected by electric force.

In this case, when the oil particles are included in the incoming air, the oil particles in the air may be collected by the electrostatic precipitator. That is, oil particles are collected in the dust collecting plate, and thus, the surface of the dust collecting plate is coated, and thus there is a problem in that dust collecting power is reduced.

In addition, the dust collecting plate is generally formed of the same material as the PET film is difficult to wash, there is a problem that it is difficult to replace and change after being mounted. Therefore, when oil particles are collected in the dust collecting plate, the performance of the electrostatic precipitator is very low, and there is a problem in that a lot of cost and time are consumed for cleaning and replacement.

In order to solve this problem, an embodiment of the present invention aims to propose an electrostatic precipitator having a dust collecting plate having difficulty of oil particles and an air conditioner including the same.

In addition, it is an object of the present invention to propose an electrostatic precipitator and an air conditioner including the dust collecting plate made of a material free of molding and forming a fine shape on the surface to prevent the implantation of oil particles.

An electrostatic precipitator according to the spirit of the present invention includes a charged part for charging particles in air and a dust collecting part for collecting charged particles through the charged part, and the dust collecting part includes a plurality of dust collecting plates. The plurality of dust collecting plates may include a base plate extending in a first direction A and the second direction B perpendicular to the first direction A, respectively. In this case, at least some of the plurality of dust collecting plates may include a plurality of protrusions protruding from at least one surface of the base plate in a third direction C perpendicular to the first direction A and the second direction B. FIG. Included.

In addition, the plurality of protrusions may be spaced apart from each other at the same interval. In particular, the plurality of protrusions may be arranged side by side in the first direction.

In addition, the air conditioner according to the spirit of the present invention includes a case having a suction port, a charging unit for charging the particles in the air sucked into the suction port, and a dust collecting unit for collecting the charged particles through the charging unit. The dust collecting part includes a plurality of dust collecting plates spaced apart in a direction perpendicular to the flow direction of the suction air, and the plurality of dust collecting plates respectively include base plates extending in the flow direction of the suction air. At this time, at least one surface of the base plate, a concave-convex structure having a plurality of protrusions may be formed.

According to the proposed embodiment, since the oil particles in the air are not implanted on the dust collecting plate, it is possible to prevent contamination and to prevent the dust collection rate from falling.

In addition, as the dust collecting plate is formed of a conductive plastic material, which is easy to process, there is an advantage that an uneven structure which is difficult to form oil particles on one surface of the dust collecting plate can be formed.

In addition, it is easy to remove the oil particles collected in the dust collecting plate, there is an advantage that can be used semi-permanently by washing the dust collecting plate.

In addition, there is an advantage that can maintain the dust collection rate of the electrostatic precipitator to a certain level or more to obtain the user's trust.

In addition, since the electrostatic precipitator can be used for a long time without replacement, there is an advantage that the replacement time and cost is reduced.

1 is a view showing an air conditioner according to an embodiment of the present invention.
FIG. 2 is a view illustrating II-II ′ of FIG. 1.
3 is a view showing a dust collecting plate of the electrostatic precipitator according to an embodiment of the present invention.
4 is a cross-sectional view taken along the line IV-IV 'of FIG. 3.
5 is a view showing a dust collecting plate of the electrostatic precipitator according to another embodiment of the present invention.
6 is a view illustrating a process in which predetermined particles are collected by an electrostatic precipitator according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the embodiments of the present invention, when it is determined that a detailed description of a related well-known configuration or function disturbs the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but between components It will be understood that may be "connected", "coupled" or "connected".

1 is a view showing an air conditioner according to an embodiment of the present invention, Figure 2 is a view showing II-II 'of FIG.

1 and 2, the air conditioner 10 according to the spirit of the present invention is coupled to the front of the case 11 and the case 11 to form an appearance of the air conditioner 10 A front panel 12 is included that forms a front appearance.

The case 11 may be an indoor unit case disposed indoors in the case of a separate air conditioner, or may be a case of the air conditioner itself in the case of an integrated air conditioner. And, in a broad sense, the front panel 12 can be understood as one configuration of the case 11.

The case 11 includes a suction port 20 through which the indoor air flows and a discharge port 30 through which the air introduced through the suction port 20 is discharged into the indoor space.

The suction port 20 is formed by opening at least a portion of the upper portion of the case 11. In addition, the suction port 20 may be provided with a suction grill 22 to prevent the inflow of foreign matter.

 The discharge port 30 may be formed by opening at least a portion of the lower portion of the case 11. In addition, the discharge port 30 may be provided with a discharge grill (not shown).

On one side of the discharge port 30, the discharge vane 32 is provided to be movable to open or close the discharge port 30. When the discharge vane 32 is opened, the air that is harmonized in the case 11 may be discharged to the indoor space. For example, in the discharge vane 32, a lower portion of the discharge vane 32 may rotate upward to open the discharge port 30.

In addition, the air conditioner 10 includes a blowing fan 60 and a heat exchanger 40 installed inside the case 11.

 The heat exchanger 40 is installed to exchange heat with the air sucked in the inlet 20. In addition, the heat exchanger 40 includes a refrigerant tube through which a refrigerant flows, and a heat exchange fin coupled with the refrigerant tube to increase a heat exchange area. The heat exchanger 40 is disposed to surround the suction side of the blower fan 60. For example, the heat exchanger 40 may include a plurality of bent heat exchangers.

The blowing fan 60 includes a cross flow fan for discharging air sucked in the circumferential direction in the circumferential direction. The blower fan 60 includes a fan body 61 as a fixing member and a plurality of blades 65 fixed to one side of the fan body 61 and spaced apart in the circumferential direction. The plurality of blades 65 have a form arranged along the circumferential direction.

In addition, the air conditioner 10 is provided with flow path guides 51 and 52 disposed near the outer circumferential surface of the blower fan 60 to guide the flow of air. The flow path guides 51 and 52 extend along the longitudinal direction of the blowing fan 60, and include a rear guide 51 and a stabilizer 52.

The rear guide 51 extends from the rear side of the case 11 to the suction side of the blowing fan 60. The rear guide 51 allows the intake air to be smoothly guided to the blowing fan 60 when the blowing fan 60 is rotated. In addition, the rear guide 51 may prevent the air flowing by the blower fan 60 from being separated from the blower fan 60.

The stabilizer 52 is disposed on the discharge side of the blower fan 60. The stabilizer 52 is installed to be spaced apart from the outer circumferential surface of the blower fan 60 to prevent the air discharged from the blower fan 60 from flowing back toward the heat exchanger 40.

In addition, the air conditioner 10 includes a drain portion 53 disposed below the heat exchanger 40. The drain 53 may store condensed water generated during a heat exchange process between air and a refrigerant.

In addition, the air conditioner 10 may include an electrostatic precipitator 70 for collecting dust particles in the air. The electrostatic precipitator 70 may be installed adjacent to the suction port 20 to remove dust particles from the air sucked.

The electrostatic precipitator 70 includes a charging unit 72 for charging dust particles in air and a dust collecting unit 80 for collecting dust particles charged through the charging unit 72.

The charging unit 72 may be provided in the form of a carbon brush to discharge a high voltage. In addition, the charged portion 72 may be spaced apart at predetermined intervals may be provided in plurality.

The dust collector 80 may be spaced apart from each other with the charged portion 72 facing each other. In addition, a plurality of dust collectors 80 may be spaced apart at predetermined intervals, such as the charged portion 72.

As shown in FIG. 2, a plurality of charged portions 72 and dust collectors 80 are provided along the suction port 20. In detail, the plurality of charged portions 72 and the dust collector 80 are spaced apart from each other in a direction perpendicular to the flow direction of air.

At this time, each dust collecting unit 80 is called a dust collecting plate (100, Fig. 3). That is, the dust collecting part 80 includes a plurality of dust collecting plates 100. In addition, the dust collecting plate 100 may be formed of a conductive plastic. Accordingly, the degree of freedom of shape and the processability can be good.

The dust collecting plate 100 is formed extending in the flow direction of the air to be sucked. Referring to FIG. 2, the dust collecting plate 100 extends in a flow direction of air and is spaced apart from each other in a direction perpendicular to the flow direction of air. However, the number and spacing of the dust collecting plate 100 shown in FIG. 2 is merely exemplary and is not limited thereto.

At this time, the uneven structure is formed on the surface of the dust collecting plate 100 of the air conditioner 10 according to the spirit of the present invention. This will be described in detail below.

3 is a view showing a dust collecting plate of the electrostatic precipitator according to an embodiment of the present invention, Figure 4 is a view showing a cross-section IV-IV 'of Figure 3 in various embodiments.

3 illustrates at least a part of one dust collecting plate 100. In other words, in order to explain the fine concavo-convex structure formed on the surface of the dust collecting plate 100, it may be understood that the portion is enlarged. This will be described again with the collection of particles in FIG. 6.

As shown in FIG. 3, the dust collecting plate 100 includes a base plate 110 extending in a first direction A and a second direction B as a whole.

The first direction A is a longitudinal direction in the drawing, and means a flow direction of air. Referring to FIG. 2, the direction of the arrow shown in FIG. 2 may be understood as the first direction A. FIG. In addition, the flow direction of air may be any one of the upward direction or the downward direction in FIG.

The second direction B may be understood as a direction perpendicular to the first direction A and a direction perpendicular to the flow direction of air. Referring to FIG. 2, the second direction B may be understood as a direction entering or exiting from the ground.

In addition, the plurality of dust collecting plates 100 may be spaced apart from each other in a direction perpendicular to the first direction A and the second direction B, that is, a direction entering the ground or a direction exiting from the ground in FIG. 3. Hereinafter, for convenience of description, this is referred to as a third direction C. FIG. At this time, each base plate 110 may be arranged in parallel to each other.

As shown in (a) and (b) of Figure 4, the base plate 110 may be provided in a flat plate parallel to the first direction (A). For example, the base plate 110 may be provided as a flat plate having a thickness of 2um.

The base plate 110 may be bent to have a predetermined curvature with respect to the first direction A. FIG. The base plate 110 may be bent in various forms. For example, as shown in FIG. 4C, the center side may be provided convexly bent.

In addition, the dust collecting plate 100 according to the spirit of the present invention includes a plurality of protrusions 120 formed on one surface of the base plate 110. Referring to FIG. 4, the protrusion 120 protrudes in a direction perpendicular to the first direction A from one surface of the base plate 110. In detail, the protrusion 120 protrudes in the third direction C from the base plate 110.

In this case, one surface of the base plate 110 on which the protrusion 120 is formed is referred to as an uneven surface 112. In particular, the uneven surface 112 may correspond to a collecting surface for collecting particles in the air, such as dust. That is, the protrusion 120 may be formed only on the surface of the plurality of collecting plate 100 is collected particles.

Each protrusion 120 may be formed in the same shape with each other. For example, the protrusion 120 may protrude from the base plate 110 in a circular shape. That is, the protrusion 120 may be provided in a cylindrical shape having a predetermined height. For example, the protrusion 120 may be formed in a cylindrical shape having a diameter of 5um.

In addition, the protrusions 120 may be spaced apart from each other at the same interval. In particular, the protrusions 120 may be arranged to be spaced apart at equal intervals in the flow direction of air, that is, the first direction (A).

Referring to FIG. 4, the protrusions 120 are spaced apart from each other at equal intervals side by side in the first direction A. Referring to FIG. In addition, the protrusion 120 may be arranged in a zigzag in the second direction (B).

Hereinafter, for convenience of description, the column is divided into one column, two columns, three columns, and four columns from the left in FIG. 4. In addition, the protrusions 120 in each row are classified into first, second, and the like from the top to the bottom. That is, the first to fifth protrusions 120 are provided in the first and third rows, respectively, and the first to fourth protrusions 120 are provided in the second and fourth rows, respectively.

For example, the protrusions 120 in each row are arranged side by side in the first direction A spaced apart from each other by 4 μm. In detail, the centers of the first protrusions 120 in the first row and the centers of the second protrusions 120 in the first column are spaced apart by 9 μm in the first direction A. FIG.

As shown in FIG. 4A, portions of the base plate 110 in which the protrusions 120 are formed are convex, and surfaces on which the protrusions 120 are not formed are concave. Accordingly, the uneven surface 112, that is, the uneven structure may be formed.

In addition, the protrusions 120 of different rows may be arranged to be spaced apart from each other at the same interval. In detail, the center of the first protrusion 120 in the first row and the center of the first protrusion 120 in the second row are arranged to be spaced apart from each other by 9 um. In addition, the center of the second protrusion 120 of the first row and the center of the first protrusion 120 of the second row are also spaced apart 9um.

That is, the centers of the first protrusions 120 in a row, the centers of the second protrusions 120 in a row and the centers of the first protrusions 120 in a second row are arranged to form an equilateral triangle with each other. Similarly, the centers of the first protrusions 120 in the second row, the centers of the first protrusions 120 in the third row and the centers of the second protrusions 120 in the third row are also arranged to form an equilateral triangle.

In addition, the protrusions 120 may protrude to different sizes. That is, the protrusions 120 may have different lengths in the third direction (C). As shown in (b) of FIG. 4, the second protrusion 120 in one row may protrude more than the first protrusion 120 in one row.

For example, the first protrusion 120 in a row may protrude 2um from the base plate 110, and the second protrusion 120 in a row may protrude 4um from the base plate 110.

In addition, the protrusions 120 may be formed in different shapes. Hereinafter, a description will be given with reference to FIG. 5.

5 is a view showing a dust collecting plate of the electrostatic precipitator according to another embodiment of the present invention.

As shown in FIG. 5, protrusions 120 and 130 having different shapes may be formed on the base plate 110. In FIG. 5, two different protrusions 120 and 130 are illustrated. For convenience of description, the protrusions 120 and 130 are divided into a first protrusion 120 and a second protrusion 130.

The first protrusions 120 protrude in a circular shape and are arranged side by side in the first direction A. In this case, the first protrusion 120 is formed in a circular shape having a diameter of 5um, and may protrude by 2um from the base plate 110.

The second protrusion 130 may have a rib shape that extends in the first direction A to protrude. In FIG. 5, the second protrusion 130 is illustrated in a rectangular shape extending in the first direction A. In FIG. As the base plate 110 extends in the first direction A, the second protrusion 130 may extend in the first direction A corresponding thereto.

In this case, the second protrusion 130 may have a predetermined thickness in the second direction (B). For example, the second protrusion 130 has a thickness of 4 μm in the second direction B and is provided in a rib shape extending in the first direction A. FIG. In addition, the second protrusion 130 may protrude as much as 4 μm from the base plate 110.

That is, the first protrusion 120 and the second protrusion 130 may be formed in different shapes, different protrusion sizes.

In addition, the first protrusion 120 and the second protrusion 130 may be alternately arranged in the second direction (B). That is, as shown in FIG. 5, the first protrusion 120-the second protrusion 130-the first protrusion 120-the second protrusion 130 are sequentially arranged from the left side.

The shape, size and number of the protrusions 120 and 130 are exemplary, and may be formed in any shape that can form an uneven structure on one surface of the base plate 110.

In addition, the dust collecting plate 100 having such an uneven structure may be formed by various manufacturing methods. In this case, the dust collecting plate 100 may be made of a conductive plastic material that is easy to process.

For example, an uneven structure may be formed in the dust collecting plate 100 by a nano imprint method. In detail, contaminants are removed and planarized on the surface and pressed against the mold corresponding to the uneven structure to be formed. The laser is irradiated in a pressurized state to harden the pattern and to remove the mold. In addition, the dust collecting plate 100 having a predetermined uneven structure may be manufactured by performing reactive etching and post-treatment operations.

In addition, the dust collecting plate may form a concave-convex structure by a 3D printing method, a roll to roll method and a chemical etching method. Hereinafter, the collection process of the electrostatic precipitator having such an uneven structure will be described.

6 is a view illustrating a process in which predetermined particles are collected by an electrostatic precipitator according to an embodiment of the present invention.

As shown in Figure 6, the dust collecting plate according to the spirit of the present invention is provided extending in the flow direction (A) of air, it is provided with a plurality of vertically spaced apart from the flow direction (A) of air. At this time, for convenience of description, two dust collecting plates are illustrated, and are divided into a first dust collecting plate 100a and a second dust collecting plate 100b.

The first base plate 110a and the second base plate 100b are provided with a first base plate 110a and a second base plate 110b, respectively. The first base plate 110a and the second base plate 110b respectively extend in the first direction A and are disposed in parallel to each other.

As such, air may flow between the first base plate 110a and the second base plate 110b that are disposed in parallel. In other words, air flows in the first direction A and may pass between the first base plate 110a and the second base plate 110b.

In this process, foreign matter contained in the air may be collected. In this case, foreign matter may be collected in the second dust collecting plate 100b. That is, a high voltage electrode is connected to the first dust collecting plate 100a and a dust collecting electrode is connected to the second dust collecting plate 100b. Accordingly, foreign matters in the air charged by the charged portion 72 are collected by the second dust collecting plate 100b by the electric force.

Foreign matter in the air may include oil particles (O) as well as dust particles. In particular, when the user cooks in an indoor space, many oil particles O are distributed in the air, and as the air conditioner 10 is operated, the oil particles O are collected on the second dust collecting plate 100b. do.

At this time, the second dust collecting plate (100b) is provided with an uneven surface 112. In detail, one surface of the second base plate 110b facing the first base plate 110a is provided as an uneven surface 112. That is, the protrusion 120 is formed on one surface of the second base plate 110b in which foreign matter is collected.

Therefore, the oil particles O collected on the second dust collecting plate 100b are collected on the uneven surface 112. At this time, the oil particles (O) is not collected in the state spread on the uneven surface 112, is collected while maintaining a circular particle shape in the air. This is because the contact area between the second base plate 110b and the oil particles O is small due to the protrusion 120.

Accordingly, the oil particles O are collected in a form that is easy to be removed without being implanted on the surface of the second base plate 110b. In addition, the power may be turned off to the electrostatic precipitator 70 or the oil particles O may be moved through a gradient formed in the second base plate 110b. In addition, it can be removed by having an oil collecting unit where the movement of the oil particles (O) is expected.

As such, the oil particles (O) in the air can be collected and easily removed. 6, the uneven surface 112 is formed on only one surface of the second base plate 110b, but may be formed on both surfaces of the second base plate 110b. In addition, the uneven surface 112 may be formed on the first base plate 110a.

In addition, as shown in FIG. 6, the protrusion 120 protrudes in a very small size compared to the length of the first direction A of the base plate 110. Accordingly, the shape of the protrusion 120 does not significantly affect the distance between the first dust collecting plate 100a and the second dust collecting plate 100b. Therefore, a uniform magnetic field is generated between the first dust collecting plate 100a and the second dust collecting plate 100b, and the maximum dust collecting performance can be derived.

10: air conditioner 70: electrostatic precipitator
72: charged portion 80: dust collector
100: dust collecting plate 110: base plate
112: uneven surface 120, 130: protrusion
A: first direction B: second direction
C: third direction

Claims (15)

A charging unit for charging particles in the air; And
And a dust collecting part collecting charged particles through the charged part.
The dust collecting part includes a plurality of dust collecting plates,
In the plurality of dust collecting plates,
A base plate extending in a first direction A and a second direction B perpendicular to the first direction A, respectively;
At least a part of the plurality of dust collecting plates,
And a plurality of protrusions protruding from at least one surface of the base plate in a third direction (C) perpendicular to the first direction (A) and the second direction (B). The method of claim 1,
Electrostatic precipitator, characterized in that the plurality of protrusions are arranged spaced apart from each other at the same interval. The method of claim 2,
And the plurality of protrusions are arranged side by side in the first direction. The method of claim 2,
And the plurality of protrusions are arranged zigzag in the second direction. The method of claim 1,
Electrostatic precipitator, characterized in that the plurality of protrusions are formed in the same shape with each other. The method of claim 5,
The plurality of protrusions is characterized in that the electrostatic precipitator, characterized in that formed in a cylindrical shape protruding in a circular shape on one surface of the base plate. The method of claim 1,
And the plurality of protrusions protrude to different lengths in the third direction. The method of claim 1,
In the plurality of protrusions,
First protrusions spaced apart from each other in the first direction on one surface of the base plate; And
And a second protrusion extending in the first direction from one surface of the base plate. The method of claim 1,
And the first protrusion and the second protrusion are alternately arranged in the second direction. The method of claim 1,
The plurality of protrusions, the electrostatic precipitator, characterized in that formed by the nanoimprint method. The method of claim 1,
In the plurality of dust collecting plates,
A first dust collecting plate connected to the high voltage electrode and having a first base plate; And
A second dust collecting plate connected to the dust collecting pole and having a second base plate;
And the first base plate and the second base plate are spaced apart from each other in the third direction (C) in parallel to each other. The method of claim 11,
Electrostatic precipitator, characterized in that the plurality of protrusions are formed on one surface of the second base plate facing the first base plate. The method of claim 1,
The base plate is bent with respect to the first direction (A) has a predetermined curvature, characterized in that the electrostatic precipitator. The method of claim 1,
The plurality of dust collecting plates, the electrostatic precipitator, characterized in that formed of a conductive plastic (plastic). A case in which a suction port is formed;
A charging unit for charging particles in the air sucked into the intake port; And
Includes; a dust collecting portion for collecting the charged particles through the charged portion,
The dust collecting part includes a plurality of dust collecting plates spaced in a direction perpendicular to the flow direction of the intake air,
Each of the plurality of dust collecting plates includes a base plate extending in the flow direction of the intake air,
At least one surface of the base plate, the air conditioner, characterized in that the uneven structure having a plurality of protrusions are formed.

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