Electric appliance with electrostatic dust collecting device using carbon fiber

Abstract

An electrical appliance having an electrostatic dust collecting device using carbon fiber includes: a main body including an inlet; a charging device arranged on the main body at an edge of the inlet and configured to charge pollutants in the air; an air moving device arranged inside the main body and configured to suck in air containing pollutants and discharge the air to the outside; and a dust collecting device arranged in an air passage and configured to collect pollutants charged by the charging device from the air. The charging device includes: a plurality of carbon fiber electrodes arranged toward the inlet and configured to generate electrons to charge pollutants; a printed circuit board on which the plurality of carbon fiber electrodes are arranged; and a ground electrode arranged adjacent to the printed circuit board without facing the plurality of carbon fiber electrodes.

Description

Technical Field

[0001] The present disclosure relates to an electrical appliance having an electrostatic dust collecting device, and more particularly to an electrical appliance having an electrostatic dust collecting device using carbon fibers. Background Art

[0002] There are a variety of dust collection devices that can remove particulate pollutants, such as dust, from polluted air to make the air clean.

[0003] exist Figure 1 An electric dust collector for charging and collecting pollutants by using a high voltage is shown in FIG.

[0004] Reference Figure 1 The electric dust collecting device 500 includes a charging member 510 and a dust collecting member 520 disposed downstream of the charging member 510 .

[0005] The charging member 510 is composed of a discharge electrode 511 and a pair of ground plates 513. The discharge electrode 511 is formed as a wire electrode disposed at the center of the pair of ground plates 513. Tungsten wire is generally used as the discharge electrode 511. The pair of ground plates 513 are disposed on the upper and lower sides of the discharge electrode 511. When a high voltage is applied between the discharge electrode 511 and the ground plate 513, corona discharge is generated in the discharge electrode 511, and a hemispherical electric field is formed between the discharge electrode 511 and the ground plate 513.

[0006] The dust collecting part 520 has a structure in which a plurality of flat positive electrodes 521 and a plurality of flat negative electrodes 522 are stacked at regular intervals. Therefore, when a predetermined voltage is applied between the positive electrode 521 and the negative electrode 522 of the dust collecting part 520, an electric field is formed between the positive electrode 521 and the negative electrode 522.

[0007] Therefore, when the air conveyed by the air moving device (not shown) passes through the charging part 510, the pollutants in the air are charged to have a positive (+) polarity. The pollutants charged to have a positive polarity adhere to the negative electrode 522 and are removed from the air when passing through the dust collecting part 520. Therefore, the dust collecting part 520 discharges the clean air from which the pollutants are removed.

[0008] However, in the electric dust collector 500 using corona discharge as described above, power consumption is large and a large amount of ozone is generated due to corona discharge. An ozone treatment device may be provided to solve the ozone problem, but this increases the cost of the dust collector.

[0009] In addition, in order to solve such a problem, a dust collecting device for charging pollutants by using carbon fibers as electrodes has been developed and used. However, in the dust collecting device using carbon fibers, the emission of electrons is unstable and there is a concern that when a person touches the tip of the carbon fibers, he or she may receive an electric shock. Summary of the invention

[0010] Additional aspects will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the presented embodiments.

[0011] The present disclosure has been developed to overcome the above disadvantages and other problems associated with conventional arrangements. One aspect of the present disclosure relates to an appliance having an electrostatic dust collecting device using carbon fibers that stably generate electrons.

[0012] One aspect of the present disclosure is directed to an electrical appliance having an electrostatic dust collecting device using carbon fibers that can prevent a person from coming into contact with a tip of the carbon fibers and receiving an electric shock.

[0013] According to one aspect of the present disclosure, an electrical appliance having an electrostatic dust collecting device using carbon fiber may include: a main body including an inlet; a charging device arranged on the outer surface of the main body at the edge of the inlet, the charging device being configured to charge pollutants contained in the air flowing into the inlet; an air moving device arranged inside the main body and configured to inhale air containing pollutants and discharge the air to the outside of the main body; and a dust collecting device arranged in an air channel, wherein the air inhaled by the air moving device set in the main body passes through the air channel, and the dust collecting device is configured to collect pollutants charged by the charging device from the air, wherein the charging device may include: a plurality of carbon fiber electrodes arranged toward the inlet and configured to generate electrons to charge surrounding pollutants; a printed circuit board on which the plurality of carbon fiber electrodes are arranged; and a grounding electrode arranged behind the printed circuit board relative to the plurality of carbon fiber electrodes.

[0014] The electrical appliance may include a plurality of electronic baffles, which are arranged between the charging device and the dust collecting device and are configured to block the flow of electrons emitted from the plurality of carbon fiber electrodes of the charging device into the dust collecting device, wherein the plurality of electronic baffles may be arranged to correspond one-to-one to the plurality of carbon fiber electrodes.

[0015] The charging device may be fixed to a charging device holder provided in the main body, and the plurality of electronic shutters may be provided in the charging device holder at regular intervals.

[0016] The electrical appliance may include a housing accommodating the plurality of carbon fiber electrodes, the printed circuit board, and the ground electrode, wherein the housing may include an opening which is spaced apart from tips of the plurality of carbon fibers by a predetermined distance and through which external air is introduced.

[0017] The ground electrode may be disposed on a rear surface of the housing spaced apart from an opposing surface of a printed circuit board that is opposite to the plurality of carbon fiber electrodes disposed on one surface of the printed circuit board.

[0018] The ground electrode may be disposed on an upper surface or a lower surface of the housing spaced apart from an opposing surface of a printed circuit board that is opposite to the plurality of carbon fiber electrodes disposed on one surface of the printed circuit board.

[0019] The plurality of carbon fiber electrodes may be disposed on a lower surface of the housing.

[0020] The appliance may include a protective grille arranged in the opening of the housing.

[0021] The protection grid may include any one of a triangular pattern, a square pattern, a pentagonal pattern, a hexagonal pattern, a diamond pattern, a circular pattern, and an elliptical pattern.

[0022] A rear opening may be provided in a rear surface of the housing.

[0023] Each of the plurality of carbon fiber electrodes may include: an electrode rod fixed to the printed circuit board; and a plurality of carbon fibers arranged on a tip of the electrode rod.

[0024] The plurality of carbon fiber electrodes may be arranged in parallel with the printed circuit board, and the ground electrode may be arranged on the printed circuit board and located at an opposite side of the plurality of carbon fibers of an electrode rod based on the plurality of carbon fiber electrodes.

[0025] The charging device may be arranged on an outer surface of the main body at a position where the charging device does not interfere with a projection area of ​​the inlet.

[0026] The electrical appliances may include air conditioners, air purifiers, dehumidifiers, humidifiers, clothes organizers, refrigerators, and dryers.

[0027] According to one aspect of the present disclosure, an electrical appliance including an electrostatic dust collecting device using carbon fiber may include: a main body including an inlet, an outlet, and an air passage connecting the inlet and the outlet; a charging device arranged on an outer surface of the main body at an edge of the inlet, the charging device being configured to charge pollutants contained in the air flowing into the inlet; an air moving device arranged inside the main body and configured to suck in air containing pollutants through the inlet and discharge the air to the outside of the main body through the outlet; a dust collecting device arranged in the air passage provided inside the main body, the dust collecting device being configured to collect pollutants charged by the charging device from the air; and and a plurality of electronic baffles arranged between the charging device and the dust collecting device, the plurality of electronic baffles being configured to block the electrons emitted from the charging device from flowing into the dust collecting device, wherein the charging device may include: a plurality of carbon fiber electrodes arranged toward the inlet and configured to generate electrons to charge the pollutants; a printed circuit board on which the plurality of carbon fiber electrodes are arranged; a shell configured to fix the printed circuit board and accommodate the plurality of carbon fiber electrodes; and a ground electrode arranged behind the printed circuit board in the shell relative to the plurality of carbon fiber electrodes, and wherein the plurality of electronic baffles may be arranged to correspond one-to-one to the plurality of carbon fiber electrodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] These and / or other aspects and advantages of the present disclosure will become apparent and more easily understood from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0029] Figure 1 is a diagram showing a conventional electric dust collector;

[0030] Figure 2 is a conceptual diagram showing an electrical appliance including an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure;

[0031] Figure 3 is a perspective view showing a charging device of an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure;

[0032] Figure 4 It is shown Figure 3 An exploded perspective view of a charging device;

[0033] Figure 5 It is shown Figure 3 A cross-sectional view of a charging device;

[0034] Figure 6 It is shown Figure 3 A rear perspective view of a charging device;

[0035] Figure 7 It is shown Figure 3A perspective view of a printed circuit board of a charging device arranged with a plurality of carbon fiber electrodes;

[0036] Figure 8 is a graph comparing the amount of electron generation of a charging device having a ground electrode according to an embodiment of the present disclosure with the amount of electron generation of a conventional charging device having no ground electrode;

[0037] Fig.9A , Fig. 9B , Fig. 9C , Fig.9D , Fig.9E , Fig.9F and Figure 9G is a diagram showing various patterns of a protection grid of a charging device according to an embodiment of the present disclosure;

[0038] Fig.10 is a cross-sectional view showing an example of a charging device of an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure;

[0039] Fig.11 is a cross-sectional view showing an example of a charging device of an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure;

[0040] Fig.12 is a cross-sectional view showing an example of a charging device of an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure;

[0041] Fig.13 is a cross-sectional view showing an example of a charging device of an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure;

[0042] Fig.14 is a perspective view showing an indoor portion of an air conditioner having an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure;

[0043] Fig.15 It is shown Fig.14 A cross-sectional view of an indoor portion of an air conditioner;

[0044] Fig.16 is a conceptual diagram showing an electrical appliance including an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure;

[0045] Fig.17 It is conceptually shown in Fig.16 A cross-sectional view of an example of a dust collecting device used in an electrical appliance;

[0046] Fig.18 is a perspective view showing a charging device of an electrostatic dust collecting device using carbon fiber having a plurality of electronic shutters according to an embodiment of the present disclosure;

[0047] Fig.19 is an exploded perspective view showing a charging device and a charging device holder of an electrostatic dust collecting device using carbon fiber having a plurality of electronic shutters according to an embodiment of the present disclosure;

[0048] Fig. 20 is an exploded perspective view showing a charging device having a protective grid provided with a plurality of electronic shutters;

[0049] Fig.21 is an exploded perspective view showing a charging device having a housing provided with a plurality of electronic shutters;

[0050] Fig. 22 is a conceptual diagram showing a situation where electrons emitted from a carbon fiber electrode are blocked by an electron baffle;

[0051] Fig.23 is a conceptual diagram showing a situation where electrons emitted from a carbon fiber electrode are blocked by an electron baffle;

[0052] Fig.24 is a partial perspective view showing a situation in which a charging device having a plurality of electronic shutters of an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure is arranged in an indoor part of an air conditioner;

[0053] Fig.25 is a diagram showing that electrons generated in a carbon fiber electrode directly move to a region of a dust collecting device when a charging device has an electron shutter;

[0054] Fig.26 is a diagram showing that electrons generated in a carbon fiber electrode directly move to a region of a dust collecting device when the charging device does not include an electron shutter;

[0055] Fig. 27 is a histogram and a normal distribution curve graph comparing a clean area when an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure is provided with an electronic shutter and a clean area when no electronic shutter is provided; and

[0056] Fig.28 is a cross-sectional view illustrating an indoor portion of an air conditioner including an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0057] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0058] It should be understood that the present disclosure is not limited to the example embodiments described below, but includes various modifications, equivalents and / or alternative forms of the examples of the present disclosure. With regard to the explanation of the drawings, similar reference numerals may be used for similar constituent elements. In addition, in order to help a comprehensive understanding, the sizes of various elements in the drawings may be arbitrarily increased or reduced.

[0059] In the present disclosure, the terms "first, second, etc." are used to describe various elements regardless of their order and / or importance, and are used to distinguish one element from other elements, but the terms are not limited to the corresponding elements. For example, a first user device and a second user device may indicate different user devices regardless of their order or importance. For example, without departing from the scope of the present disclosure, a first element may be referred to as a second element, and a second element may be referred to as a first element in a similar manner.

[0060] The terms used in the present disclosure are only used to describe various examples, but are not intended to limit the scope of other examples. In the present disclosure, unless specifically described, singular expressions may include plural expressions. All terms (including technical terms and scientific terms) used in the present disclosure can be used as commonly understood by those of ordinary skill in the art to which the present disclosure belongs. The terms used in the present disclosure and defined in general dictionaries can be used as the same or similar meanings as the meanings of the terms from the context of the prior art, and unless they have been clearly and specifically defined, they should not be idealized or overly interpreted. Even the words defined in the present disclosure should not be interpreted as excluding all examples of the present disclosure.

[0061] Hereinafter, an electrical appliance including an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

[0062] Figure 2 is a conceptual diagram illustrating an electrical appliance including an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure.

[0063] Reference Figure 2 , an electrical appliance 100 including an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure may include a main body 110 , a charging device 1 , an air moving device 130 , and a dust collecting device 120 .

[0064] The body 110 forms an outer shape of the electrical appliance 100 and may have various shapes according to the type of the electrical appliance 100. The electrical appliance 100 may be any one of an air purifier, an air conditioner, a dehumidifier, a humidifier, a clothes organizer, a refrigerator, a dryer, etc. The body 110 may be provided with an inlet 111, an outlet 112, and an air passage 113 connecting the inlet 111 and the outlet 112, wherein external air is sucked in through the inlet 111 and the sucked air is discharged through the outlet 112.

[0065] The charging device 1 is disposed near the inlet 111 of the main body 110 and is configured to charge pollutants (such as dust) contained in the air sucked into the inlet 111 using carbon fibers. The charging device 1 may be arranged on the outer surface of the main body 110 at the edge of the inlet 111. In other words, the charging device 1 may be arranged on the outer surface of the main body 110 so as not to interfere with the projection area of ​​the inlet 111. When the charging device 1 is disposed outside the inlet 111 so that the charging device 1 does not block the inlet 111, the amount of air sucked into the inlet 111 is not reduced. The configuration of the charging device 1 will be described in detail below.

[0066] The air moving device 130 is disposed inside the main body 110 and is configured to suck in external air containing pollutants through the inlet 111 and discharge the external air to the outside of the main body 110. In other words, when the air moving device 130 operates, air containing pollutants is introduced into the inlet 111 of the main body 110, flows along the air passage 113, and is discharged through the outlet 112. The air moving device 130 may use a fan that can generate suction force capable of sucking in air.

[0067] The dust collecting device 120 is arranged in the air passage 113 provided in the main body 110 and is configured to collect pollutants charged by the charging device 1 from the air sucked in by the air moving device 130. For example, the dust collecting device 120 may include a plurality of dust collecting plates spaced a predetermined distance from each other and a dust collecting voltage applicator configured to apply a high voltage to the plurality of dust collecting plates. When a high voltage is applied to the plurality of dust collecting plates by the dust collecting voltage applicator, pollutants charged by combining with electrons generated in the charging device 1 may be collected in the plurality of dust collecting plates. Therefore, since pollutants contained in the sucked in external air are removed by the dust collecting device 120, clean air is discharged from the dust collecting device 120.

[0068] The charging device 1 , the dust collecting device 120 , and the air moving device 130 as described above may constitute an electrostatic dust collecting device using carbon fibers according to an embodiment of the present disclosure.

[0069] The main body 110 may further include a processing unit 140 that performs a predetermined process on the inhaled air. For example, when the electrical appliance 110 is implemented as an air conditioner, the main body 110 may be provided with a heat exchanger capable of performing heat exchange with the inhaled air as the processing unit 140. When the electrical appliance 100 is a dehumidifier, the main body 110 may be provided with a dehumidifying device capable of removing moisture from the inhaled air as the processing unit 140. In addition, when the electrical appliance 100 is a humidifier, the main body 110 may be provided with a humidifying device capable of adding moisture to the inhaled air as the processing unit 140.

[0070] In the case where the electrical appliance 100 is an air purifier implemented by the electrostatic dust collecting device according to an embodiment of the present disclosure, the processing part 140 may not exist in the main body 110 .

[0071] When the electrical appliance 100 is a clothes organizer, a refrigerator, a dryer, etc., which is additionally provided with the electrostatic dust collecting device according to an embodiment of the present disclosure, the processing part 140 may not be included inside the main body 110 .

[0072] In the following, reference will be made to Figures 3 to 7 The charging device 1 used in the electrostatic dust collecting device using carbon fibers according to an embodiment of the present disclosure is described in detail.

[0073] Figure 3 is a perspective view illustrating a charging device of an electrostatic dust collecting device using carbon fibers according to an embodiment of the present disclosure. Figure 4 It is shown Figure 3 An exploded perspective view of a charging device, and Figure 5 It is shown Figure 3 A cross-sectional view of a charging device. Figure 6 It is shown Figure 3 Rear perspective view of a charging device. Figure 7 It is shown Figure 3 A perspective view of a printed circuit board of a charging device arranged with multiple carbon fiber electrodes.

[0074] Reference Figures 3 to 7 The charging device 1 of the electrostatic precipitator using carbon fiber according to an embodiment of the present disclosure may include a housing 10 , a plurality of carbon fiber electrodes 20 , a printed circuit board 30 , and a ground electrode 40 .

[0075] The housing 10 is formed to accommodate the plurality of carbon fiber electrodes 20 and the printed circuit board 30. An opening 11 is formed on one surface of the housing 10 facing the tips of the plurality of carbon fiber electrodes 20, that is, on the front surface of the housing 10. A rear opening 13 may be provided on the opposite side of the one surface of the housing 10, that is, on the rear surface of the housing 10. The plurality of carbon fiber electrodes 20 may be exposed through the opening 11 of the housing 10. Therefore, the housing 10 is formed so that external air may flow through the interior of the housing 10.

[0076] In the case of this embodiment, if Figure 4 As shown, the housing 10 is formed in a substantially hollow rectangular parallelepiped shape having a long length. A printed circuit board 30 to which the plurality of carbon fiber electrodes 20 are fixed is disposed inside the housing 10 .

[0077] The plurality of carbon fiber electrodes 20 are configured to generate electrons at the tip of each carbon fiber electrode 20 when a high voltage is applied to the plurality of carbon fiber electrodes 20. The plurality of carbon fiber electrodes 20 are arranged so that the tips of the carbon fiber electrodes 20 face the opening 11 of the housing 10. Therefore, the electrons generated from the plurality of carbon fiber electrodes 20 can be emitted to the outside through the opening 11 of the housing 10. Figure 2 The charging device 1 shown in FIG. 1 is arranged in the electric appliance 100 so that the opening 11 of the housing 10 faces the inlet 111 of the body 110, and the tips of the plurality of carbon fiber electrodes 20 are arranged to face the inlet 111. Accordingly, since the electrons generated from the plurality of carbon fiber electrodes 20 are emitted to the outside through the opening 11 of the housing 10, the pollutants contained in the air sucked into the inlet 111 can be charged.

[0078] The plurality of carbon fiber electrodes 20 are disposed at regular intervals on the printed circuit board 30. The plurality of carbon fiber electrodes 20 are arranged in a straight line on the printed circuit board 30. In addition, the plurality of carbon fiber electrodes 20 are arranged at the same height on the printed circuit board.

[0079] The printed circuit board 30 is provided with a power line 31 capable of applying power to the plurality of carbon fiber electrodes 20. The high voltage applying part 60 is connected to the power line 31 of the printed circuit board 30. Therefore, a high voltage can be applied to the plurality of carbon fiber electrodes 20 through the power line 31 of the printed circuit board 30. For example, the high voltage applying part 60 may be configured to apply a voltage of about 6 kV to the plurality of carbon fiber electrodes 20 through the power line 31 of the printed circuit board 30.

[0080] The printed circuit board 30 may be provided with a plurality of holes through which the air sucked into the housing 10 passes. Figure 7 As shown in FIG. 1 , a plurality of notch portions 33 through which air passes are provided on both side surfaces of the printed circuit board 30. Therefore, the plurality of notch portions 33 of the printed circuit board 30 perform the functions of a plurality of holes through which air passes. The printed circuit board 30 is formed as a rectangular plate corresponding to the opening 11 of the housing 10 so that the printed circuit board 30 can be inserted into the housing 10. The plurality of notch portions 33 having a predetermined depth are formed on both side surfaces of the printed circuit board 30. Therefore, the air introduced into the housing 10 can flow through the plurality of notch portions 33 of the printed circuit board 30.

[0081] In addition, the printed circuit board 30 is supported by a plurality of support portions 16 provided in the housing 10. The plurality of support portions 16 may be provided on the inner surfaces of the upper and lower surfaces of the housing 10. In addition, a central support portion 7 may be provided on the inner surface of each of the two ends of the housing 10 to support both ends of the printed circuit board 30.

[0082] The plurality of carbon fiber electrodes 20 may include an appropriate number of carbon fiber electrodes 20 to emit electrons to all air sucked into the inlet 111 of the body 110. Figure 4 and Figure 7 In the embodiment shown in FIG. 1 , six carbon fiber electrodes 20 are provided on the printed circuit board 30 , but this is only an example. The number of the plurality of carbon fiber electrodes 20 and the distance between two adjacent carbon fiber electrodes 20 may be appropriately determined according to the size of the inlet 111 of the main body 110 of the charging device 1 .

[0083] In addition, the printed circuit board 30 is formed to have a length capable of supporting the plurality of carbon fiber electrodes 20 arranged in a single line. For example, the printed circuit board 30 on which the plurality of carbon fiber electrodes 20 are arranged may be formed to have a length equal to or greater than 1 / 3 of the length of the inlet 111 of the body 110.

[0084] Each of the plurality of carbon fiber electrodes 20 may include an electrode rod 21 fixed to the printed circuit board 30 and a plurality of carbon fibers 22 arranged at a tip of the electrode rod 21 .

[0085] The electrode rod 21 may be formed in a generally cylindrical shape so as to support the plurality of carbon fibers 22 and be fixed to the printed circuit board 30. In other words, one end of the electrode rod 21 is fixed to the printed circuit board 30, and the plurality of carbon fibers 22 are disposed on the other end of the electrode rod 21. In addition, the electrode rod 21 is electrically connected to a power supply line 31 of the printed circuit board 30. The electrode rod 21 may be formed of a conductive material to apply power to the plurality of carbon fibers 22.

[0086] In the present embodiment, the electrode rod 21 is formed in a cylindrical shape having a circular cross section, but the shape of the electrode rod 21 is not limited thereto. The electrode rod 21 may be formed in various shapes as long as the electrode rod 21 can fix the plurality of carbon fibers 22 to the printed circuit board 30. As an example, the electrode rod 21 may be formed in a columnar shape having a cross section of a polygonal shape (such as a quadrilateral, a pentagon, etc.) or a circular shape.

[0087] The plurality of carbon fibers 22 may be fixed to one end of the electrode rod 21 in the form of a bundle. In other words, the plurality of carbon fibers 22 may have a brush shape. The plurality of carbon fibers 22 are spaced apart from each other so as not to contact each other. Each of the plurality of carbon fibers 22 may be formed to have a diameter of about 6 μm to 8 μm.

[0088] Therefore, when a high voltage is applied to the printed circuit board 30, electrons are emitted from the tips of the plurality of carbon fibers 22 and charge the pollutants contained in the air. In other words, the electrons emitted from the tips of the plurality of carbon fibers 22 combine with the pollutants c to charge the pollutants into anions (negative ions) c.- (e - +c=c - ).

[0089] The ground electrode 40 maintains a predetermined potential difference between each of the plurality of carbon fiber electrodes 20 and the surrounding air so that a predetermined amount of electrons are generated from the plurality of carbon fiber electrodes 20 even after a period of time. For this purpose, the ground electrode 40 is arranged around the plurality of carbon fiber electrodes 20. For example, the ground electrode 40 may be arranged in the vicinity of the printed circuit board 30 so as not to face the tips of the plurality of carbon fiber electrodes 20. In other words, the ground electrode 40 is arranged behind the printed circuit board 30 on the opposite side to one side of the printed circuit board 30 where the plurality of carbon fiber electrodes 20 are provided or on the opposite side of the plurality of carbon fiber electrodes 20.

[0090] For example, Figure 5 and Figure 6 As shown in FIG. 1 , the ground electrode 40 may be arranged on the rear surface of the housing 10. To this end, the electrode fixing portion 18 to which the ground electrode 40 is fixed may be provided on the rear surface of the housing 10. Therefore, the ground electrode 40 may be arranged on the rear surface of the housing 10 spaced a predetermined distance from the opposite surface of the printed circuit board 30, wherein the opposite surface of the printed circuit board is opposite to the plurality of carbon fiber electrodes 20 provided on one surface of the printed circuit board 30. At this time, the rear opening 13 of the housing 10 may be provided on the rear surface of the housing 10 on both sides of the ground electrode 40.

[0091] The ground electrode 40 is formed of a conductive thin metal plate and is formed to have a length corresponding to the length of the printed circuit board 30 so that all of the plurality of carbon fiber electrodes 20 can maintain a predetermined potential difference. Figure 4 As shown in FIG. 1 , in the case of the present embodiment, the ground electrode 40 is formed of a thin strip-shaped metal plate.

[0092] In addition, the ground electrode 40 may include a plurality of through holes 41. A plurality of fixing pins 18a corresponding to the plurality of through holes 41 of the ground electrode 40 are provided in the electrode fixing portion 18 of the housing 10. Therefore, when the plurality of fixing pins 18a of the housing 10 are inserted into the plurality of through holes 41 of the ground electrode 40, the ground electrode 40 is fixed to the electrode fixing portion 18 of the housing 10.

[0093] The ground electrode 40 is connected to the external ground 70. For example, the ground electrode 40 may be connected to the external ground 70 by connecting a ground wire (not shown) connected to the ground 70 of the external power source to one end 43 of the ground electrode 40. As described above, when the ground electrode 40 is connected to the external ground 70, ions saturated around the plurality of carbon fiber electrodes 20 are released to the external ground 70 through the ground electrode 40, so that a predetermined potential difference may be maintained around the ground electrode 40. Therefore, the plurality of carbon fiber electrodes 20 may always stably generate electrons regardless of the passage of time.

[0094] The inventors conducted an experiment to compare the amount of electrons generated in the charging device 1 having the ground electrode 40 according to the embodiment of the present disclosure with the amount of electrons generated in a conventional charging device without the ground electrode.

[0095] Figure 8 is a graph comparing the amount of electron generation of a charging device having a ground electrode according to an embodiment of the present disclosure with the amount of electron generation of a conventional charging device having no ground electrode.

[0096] exist Figure 8 In the figure, the horizontal axis represents time (minutes) and the vertical axis represents the amount of electrons generated. Figure 8 , a thin line ① represents the amount of electrons generated in a conventional charging device without a ground electrode, and a thick line ② represents the amount of electrons generated in the charging device 1 having the ground electrode 40 according to an embodiment of the present disclosure.

[0097] Reference Figure 8 As shown in the bold line ② in FIG. 2 , the charging device 1 according to the embodiment of the present disclosure maintains the electron generation amount constant within the range of about 3,600,000 to about 5,000,000 even after an extended amount of time, thereby uniformly generating electrons.

[0098] However, referring to Figure 8 As shown in the thin line ① in FIG. 1 , the conventional charging device maintains the amount of electron generation in the range of about 3,600,000 to about 5,000,000 similarly to the charging device 1 of the present disclosure until about 50 minutes. However, from the time point exceeding 60 minutes, the amount of electrons generated in the conventional charging device sharply decreases to about 2,000,000 or less, and the amount of electron generation intermittently becomes almost zero. In other words, in the conventional charging device without a ground electrode, it can be seen that the amount of electron generation is uneven over time.

[0099] Therefore, the charging device 1 having the ground electrode 40 according to the embodiment of the present disclosure may have a stable amount of electron generation compared to a conventional charging device without a ground electrode.

[0100] In the case where the plurality of carbon fiber electrodes 20 are exposed to the outside, when a user cleans the appliance 100 equipped with the electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure, a part of the user's hand or body may contact the plurality of carbon fiber electrodes 20. At this time, since a high voltage is applied to the plurality of carbon fiber electrodes 20, the user may receive an electric shock when a part of the hand or body contacts the carbon fiber electrodes 20.

[0101] In order to prevent electric shock, a protection grid 50 may be disposed in the opening 11 of the front surface of the housing 10 facing the plurality of carbon fiber electrodes 20. The protection grid 50 blocks the user's hands or fingers from contacting the carbon fiber electrodes 20. The protection grid 50 may be formed in various patterns that block the user's hands or fingers and allow air and electrons generated from the plurality of carbon fiber electrodes 20 to pass therethrough.

[0102] Reference Figure 3 and Figure 4 The protective grid 50 is formed in a generally hollow rectangular parallelepiped shape having a long length. The front surface of the protective grid 50 is provided with a pattern portion 51 through which air can be sucked and electrons can be emitted. The rear surface of the protective grid 50 coupled to the housing 10 is open.

[0103] A plurality of fixing protrusions for fixing the printed circuit board 30 to the housing 10 may be provided at the rear end of the protection grid 50. When the protection grid 50 is coupled to the opening 11 of the housing 10, the pattern portion 51 of the protection grid 50 is spaced apart from the tips of the plurality of carbon fiber electrodes 20 by a predetermined distance, and the printed circuit board 30 is fixed to the inside of the housing 10. Therefore, there is a certain gap between the inner surface of the front surface of the protection grid 50 and the tips of the plurality of carbon fiber electrodes 20 fixed to the housing 10.

[0104] In addition, a plurality of fixing hooks 55 for coupling the protection grid 50 to the housing 10 may be provided on the upper and lower surfaces of the rear end of the protection grid 50. A plurality of fixing grooves 15 coupled with the plurality of fixing hooks 55 of the protection grid 50 may be provided on the upper and lower surfaces of the front end of the housing 10 corresponding to the plurality of fixing hooks 55.

[0105] On the other hand, the pattern part 51 of the protection grid 50 may be formed in various patterns having holes 53 that block the hand or fingers of the user and through which air and electrons pass.

[0106] Fig.9A , Fig. 9B , Fig. 9C , Fig.9D , Fig.9E , Fig.9F and Figure 9G2 are diagrams illustrating various patterns of a protection grid of a charging device according to an embodiment of the present disclosure.

[0107] like Fig.9A As shown in FIG. 1 , the pattern portion 51 of the protective grid 50 of the charging device 1 may be formed in a triangular pattern continuously forming a plurality of triangular holes 53. At this time, the diameter d of the inscribed circle 53a of each of the plurality of triangular holes 53 may not exceed about 6 mm.

[0108] like Fig. 9B As shown in FIG. 1 , the pattern portion 51 of the protection grid 50 of the charging device 1 may be formed in a rectangular pattern continuously forming a plurality of rectangular holes 53. At this time, the diameter d of the inscribed circle 53a of each of the plurality of rectangular holes 53 may not exceed about 6 mm.

[0109] like Fig. 9C As shown in FIG. 1 , the pattern portion 51 of the protective grid 50 of the charging device 1 may be formed as a regular hexagonal pattern continuously forming a plurality of regular hexagonal holes 53, that is, a honeycomb pattern. At this time, the diameter d of the inscribed circle 53a of each of the plurality of hexagonal holes 53 may not exceed about 6 mm.

[0110] like Fig.9D As shown in FIG. 1 , the pattern portion 51 of the protective grid 50 of the charging device 1 may be formed as a pentagonal pattern continuously forming a plurality of pentagonal holes 53. At this time, the diameter d of the inscribed circle 53a of each of the plurality of pentagonal holes 53 may not exceed about 6 mm.

[0111] like Fig.9E As shown in FIG. 1 , the pattern portion 51 of the protection grid 50 of the charging device 1 may be formed as a diamond pattern continuously forming a plurality of diamond holes 53. At this time, the diameter d of the inscribed circle 53a of each of the plurality of diamond holes 53 may not exceed about 6 mm.

[0112] like Fig.9F As shown in FIG. 1 , the pattern portion 51 of the protection grid 50 of the charging device 1 may be formed in a circular pattern continuously forming a plurality of circular holes 53. At this time, the diameter d of each of the plurality of circular holes 53 may not exceed about 6 mm.

[0113] like Figure 9G As shown in FIG. 1 , the pattern portion 51 of the protection grid 50 of the charging device 1 may be formed as an elliptical pattern continuously forming a plurality of elliptical holes 53. At this time, the diameter d of the inscribed circle 53a of each of the plurality of elliptical holes 53 may not exceed about 6 mm.

[0114] As described above, when the protective grid 50 is disposed in the opening 11 of the front surface of the housing 10 accommodating the plurality of carbon fiber electrodes 20, a part of the body (such as a user's finger) can be blocked from contacting the plurality of carbon fiber electrodes 20 to avoid electric shock. In addition, electrons generated from the plurality of carbon fiber electrodes 20 are emitted to the outside through the plurality of holes 53 provided in the pattern portion 51 of the protective grid 50, thereby effectively charging pollutants contained in the air passing in front of the protective grid 50.

[0115] In the above description, the protection grid 50 is formed in a rectangular parallelepiped shape having a long length and the pattern part 51 is formed on the front surface of the protection grid 50. However, the shape of the protection grid 50 is not limited thereto. Fig.10 As shown in FIG. 1 , the protection grid 50 may be formed in a flat plate shape having a pattern part 51 .

[0116] Fig.10 is a cross-sectional view illustrating an example of a charging device of an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure.

[0117] In addition to the shapes of the housing 10' and the protective grille 50', Fig.10 The plurality of carbon fiber electrodes 20, the printed circuit board 30, and the ground electrode 40 of the charging device 1' are the same as those of the charging device 1 according to the above embodiment. Therefore, a detailed description thereof is omitted.

[0118] Reference Fig.10 The housing 10' is formed in a generally hollow rectangular parallelepiped shape having a long length, and an opening 11 exposing the plurality of carbon fiber electrodes 20 is provided on the front surface of the housing 10'. The front end of the housing 10' is formed to be higher than the tip of the plurality of carbon fiber electrodes 20. Fig.10 In the embodiment, the tips of the plurality of carbon fiber electrodes 20 are located behind the opening 11 of the housing 10 ′. In addition, an electrode fixing portion 18 in which a ground electrode 40 is arranged is provided on the rear surface of the housing 10 ′ and rear openings 13 are provided on both sides of the electrode fixing portion 18 .

[0119] The protective grid 50' is formed in a flat plate shape and is arranged in the opening 11 of the housing 10' to cover the opening 11 of the front surface of the housing 10'. The rear surface of the protective grid 50' is separated from the tips of the plurality of carbon fiber electrodes 20 by a predetermined distance. The protective grid 50' is provided with various pattern portions 51 forming a plurality of holes 53, wherein the plurality of holes 53 prevent the user's hands or fingers from contacting the plurality of carbon fiber electrodes 20, and air can be introduced through the plurality of holes 53. For example, the protective grid 50' may be formed as follows FIG. 9A to FIG. 9G Various patterns shown in .

[0120] In the above description, the ground electrode 40 is disposed on the rear surface of the housing 10 of the charging device 1 and the housing 10' of the charging device 1'. However, the position of the ground electrode 40 of the charging device according to the embodiment of the present disclosure is not limited thereto. Figures 11 to 13 Various arrangements of the ground electrode 40 are described in detail.

[0121] Fig.11 is a cross-sectional view illustrating an example of a charging device of an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure.

[0122] Reference Fig.11 The charging device 2 of the electrostatic precipitator according to an embodiment of the present disclosure may include a housing 10 ″, a plurality of carbon fiber electrodes 20 , a printed circuit board 30 and a ground electrode 40 .

[0123] The plurality of carbon fiber electrodes 20 and the printed circuit board 30 are the same as or similar to those of the charging device 1 according to the above-described embodiment, and therefore, a detailed description thereof is omitted.

[0124] The shell 10" is formed to accommodate the plurality of carbon fiber electrodes 20, the printed circuit board 30 and the ground electrode 40'. In other words, the shell 10" is formed in a hollow rectangular parallelepiped shape having a long length. An opening 11 is provided on the front surface of the shell 10" facing the tips of the plurality of carbon fiber electrodes 20 arranged on the printed circuit board 30. A rear opening 13 is provided on the rear surface of the shell 10". The tips of the plurality of carbon fiber electrodes 20 are arranged to face the opening 11 of the shell 10". Therefore, the shell 10" can be formed so that air flows through the inside of the shell 10".

[0125] The protection grid 50 is disposed in the opening 11 of the front surface of the housing 10 ″ to prevent electric shock. The protection grid 50 may be formed to have holes 53 that block a user's hand or finger and through which air can pass.

[0126] For example, the protective grille 50 is formed in a generally hollow rectangular parallelepiped shape having a long length. The front surface of the protective grille 50 is provided with a pattern portion 51 that blocks the user's hands or fingers and through which air can pass. The rear end of the protective grille 50 may be connected to the opening 11 of the housing 10 ″.

[0127] When the protection grid 50 is coupled to the opening 11 of the housing 10″, the pattern portion 51 of the protection grid 50 is spaced apart from the tips of the plurality of carbon fiber electrodes 20 by a predetermined distance. In other words, there is a certain gap between the inner surface of the front surface of the protection grid 50 and the tips of the plurality of carbon fiber electrodes 20. The pattern portion 51 of the protection grid 50 may be formed as follows: FIG. 9A to FIG. 9G, and various patterns of holes 53 that block the user's hands or fingers and through which air can pass.

[0128] The ground electrode 40' is arranged on the inner side of the upper surface 10a of the housing 10", and the ground electrode 40' is separated from the opposite surface of the printed circuit board 30 opposite to the plurality of carbon fiber electrodes 20 provided on one surface of the printed circuit board 30 by a predetermined distance. The ground electrode 40' may be formed of a thin conductive metal plate and may have a length corresponding to the length of the printed circuit board 30 so that the plurality of carbon fiber electrodes 20 respectively maintain a predetermined potential difference.

[0129] Fig.12 is a cross-sectional view illustrating an example of a charging device of an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure.

[0130] Reference Fig.12 The charging device 2' of the electrostatic precipitator according to the embodiment of the present disclosure may include a housing 10", a plurality of carbon fiber electrodes 20, a printed circuit board 30 and a ground electrode 40'.

[0131] In addition to the ground electrode 40' being provided on the inner surface of the lower surface 10b of the housing 10", Fig.12 The charging device 2' shown in FIG. Fig.11 The charging device 2 shown in FIG. 1 is the same as that shown in FIG. 2 ; therefore, a detailed description thereof is omitted.

[0132] Fig.13 is a cross-sectional view illustrating an example of a charging device of an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure.

[0133] Reference Fig.13 The charging device 3 of the electrostatic precipitator according to an embodiment of the present disclosure may include a housing 310 , a plurality of carbon fiber electrodes 320 , a printed circuit board 330 , and a ground electrode 340 .

[0134] The housing 310 is formed in a generally hollow rectangular parallelepiped shape having a long length, and an opening 311 exposing the plurality of carbon fiber electrodes 320 is provided on the front surface of the housing 310. The front end of the housing 310 is formed to be higher than the tips of the plurality of carbon fiber electrodes 320. Fig.13 In the embodiment, the tips 320a of the plurality of carbon fiber electrodes 320 are located behind the opening 311 of the housing 310. In addition, the rear surface of the housing 310 is provided with a rear opening 313 through which air passes.

[0135] The plurality of carbon fiber electrodes 320 are arranged on the printed circuit board 330 so that the tips 320a of the plurality of carbon fiber electrodes 320 face the opening 311 of the housing 310. The plurality of carbon fiber electrodes 320 are arranged on the printed circuit board 330 to form a straight line at regular intervals. In addition, the plurality of carbon fiber electrodes 320 are disposed on the printed circuit board 330 so that the tips 320a of the plurality of carbon fiber electrodes 320 are located on the same plane.

[0136] The plurality of carbon fiber electrodes 320 are arranged in parallel with the printed circuit board 330. In other words, the plurality of carbon fibers 322 and the electrode rod 321 forming the carbon fiber electrode 320 are arranged in parallel with the printed circuit board 330. Therefore, the electrode rod 321 to which the plurality of carbon fibers 322 are fixed is fixed to the printed circuit board 330 through the supporting protrusion 323. Therefore, the power supplied to the printed circuit board 330 is applied to the plurality of carbon fibers 322 through the supporting protrusion 323 and the electrode rod 321.

[0137] The ground electrode 340 is provided at one side of the plurality of carbon fiber electrodes 320 on the printed circuit board 330. Therefore, the printed circuit board 330 is provided with a power supply line 331 for supplying power to the plurality of carbon fiber electrodes 320 and a ground line 332 connected to the ground electrode 340. The ground electrode 340 is provided on the opposite side of the plurality of carbon fibers 322 based on the electrode rods 321 of the plurality of carbon fiber electrodes 320. In other words, the plurality of carbon fiber electrodes 320 are arranged on the printed circuit board 330 so as to face the opening 311 of the housing 310, and the ground electrode 340 is arranged on the printed circuit board 330 so as to be adjacent to the rear opening 313 of the housing 310.

[0138] In addition, the ground electrode 340 is formed of a conductive thin metal plate. The ground electrode 340 may be formed to have a length corresponding to the length of the printed circuit board 330 so that the plurality of carbon fiber electrodes 320 fixed to the printed circuit board 330 may respectively maintain a predetermined potential difference.

[0139] On the other hand, refer to Fig.13 , the printed circuit board 330 is fixed to the lower surface of the housing 310. Therefore, the printed circuit board 330 does not prevent the air from flowing through the opening 311 and the rear opening 313 of the housing 310.

[0140] In addition, the protection grid 50 is disposed in the opening 311 of the front surface of the housing 310 to prevent electric shock. The protection grid 350 may be formed to have holes 353 through which a user's hand or finger may be blocked and through which air may flow.

[0141] The protection grid 350 is formed in a flat plate shape and is arranged in the opening 311 of the housing 310 so as to cover the opening 311 of the front surface of the housing 310. The rear surface of the protection grid 350 is spaced apart from the tips 320a of the plurality of carbon fiber electrodes 320 by a predetermined distance. The protection grid 350 is provided with various pattern parts 351 forming a plurality of holes 353, wherein the plurality of holes 353 prevent the user's hands or fingers from contacting the plurality of carbon fiber electrodes 320 and air can be introduced through the plurality of holes 353. For example, the protection grid 350 may be formed as follows: FIG. 9A to FIG. 9G Various patterns shown in .

[0142] In the following, reference will be made to Fig.14 and Fig.15 A case where the electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure as described above is applied to an indoor part of an air conditioner is described in detail.

[0143] Fig.14 is a perspective view showing an indoor part of an air conditioner having an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure, and Fig.15 It is shown Fig.14 A cross-sectional view of the indoor components of an air conditioner.

[0144] Reference Fig.14 and Fig.15 The indoor unit 200 of the air conditioner having the electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure may include a housing 210 , a charging device 1 , a dust collecting device 220 , a heat exchanger 240 , and an air blowing fan 230 .

[0145] The housing 210 forms the appearance of the indoor part 200 of the air conditioner. The housing 210 includes an inlet 211 through which external air is introduced and an outlet 212 through which air exchanging heat with the heat exchanger 240 is discharged. The housing 210 is provided with an air passage 213 through which the inlet 211 and the outlet 212 communicate with each other and through which the sucked external air passes.

[0146] The charging device 1 is arranged on the outer surface of the housing 210 so as to be adjacent to the inlet 211. The charging device 1 is configured to charge pollutants (such as dust) contained in the air flowing into the inlet 211 by using carbon fibers. The charging device 1 may be arranged at a position on the outer surface of the housing 210 where the charging device 1 does not interfere with the projection area S of the inlet 211, that is, at the edge of the inlet 211. For example, Fig.15As shown, the charging device 1 may be arranged so that the protective grille 50 of the charging device 1 does not extend beyond the end 211a of the inlet 211 of the housing 210. In other words, one end of the charging device 1 may coincide with the end 211a of the inlet 211 of the housing 210 or may be spaced apart from the end 211a of the inlet 211 by a certain distance.

[0147] When the charging device 1 is arranged outside the inlet 211 so that the charging device 1 does not block the inlet as described above, the amount of air sucked into the inlet 211 does not decrease. Therefore, the cooling and heating efficiency of the indoor part 200 can be prevented from decreasing by the charging device 1 according to the embodiment of the present disclosure.

[0148] The charging device 1 may include a printed circuit board 30 on which the plurality of carbon fiber electrodes 20 are arranged, a housing 10 accommodating the plurality of carbon fiber electrodes 20 and the printed circuit board 30, a protective grid 50 disposed in an opening 11 of the housing 10 and preventing a user from contacting the tips of the plurality of carbon fiber electrodes 20, and a ground electrode 40 disposed in the housing 10. Such a charging device 1 is the same as the above-described charging device 1; therefore, a detailed description thereof is omitted.

[0149] The dust collecting device 220 is disposed in the air passage 213 inside the housing 210 and is configured to collect pollutants charged by the charging device 1 from the air sucked by the air blowing fan 230. The dust collecting device 220 may include, for example, a plurality of dust collecting plates spaced a predetermined distance from each other and a dust collecting voltage applicator configured to apply a high voltage to the plurality of dust collecting plates. When a high voltage is applied to the plurality of dust collecting plates by the dust collecting voltage applicator, pollutants charged in combination with electrons generated by the charging device 1 may be collected in the plurality of dust collecting plates.

[0150] The heat exchanger 240 adjusts the temperature of the air by performing heat exchange with the air sucked by the air blowing fan 230. For example, when the indoor unit 200 of the air conditioner cools the room, the heat exchanger 240 cools the air sucked by the air blowing fan 230 to lower the temperature of the air. In addition, when the indoor unit 200 of the air conditioner heats the room, the heat exchanger 240 heats the air sucked by the air blowing fan 230 to increase the temperature of the air. The heat exchanger 240 is the same as or similar to a heat exchanger used in the indoor unit of a conventional air conditioner; therefore, a detailed description thereof is omitted.

[0151] The air blowing fan 230 is disposed inside the housing 210, and is configured so that external air is sucked in through the inlet 211, passes through the heat exchanger 240, and is then discharged to the outside of the housing 210 through the outlet 212. In other words, when the air blowing fan 230 is operated, air containing pollutants is introduced into the inlet 111 of the housing 210, and the introduced air passes through the dust collecting device 220 and the heat exchanger 240 along the air passage 213, and is then discharged through the outlet 112. Since the air blowing fan 230 generates suction that can suck in external air, the air blowing fan 230 can serve as an air moving device of the electrostatic dust collecting device according to an embodiment of the present disclosure.

[0152] Will refer to Fig.14 and Fig.15 The operation of the indoor unit 200 of the air conditioner having the above-mentioned structure is described.

[0153] When the indoor unit 200 is in operation, a high voltage is applied from the high voltage applying unit 60 (see Figure 2 ) is applied to the charging device 1 provided on the outer surface of the housing 210 adjacent to the inlet 211. When the high voltage is applied to the charging device 1, electrons are emitted from the plurality of carbon fiber electrodes 20 of the charging device 1. The electrons emitted from the charging device 1 are combined with pollutants in the air flow flowing into the inlet 211, thereby charging the pollutants.

[0154] In addition, when the indoor part 200 operates, the air blowing fan 230 operates so that the external air F is introduced into the housing 210 through the inlet 211. At this time, pollutants contained in the external air flow F introduced into the inlet 211 are charged by the charging device 1.

[0155] As the introduced external air passes through the dust collecting device 220 , the charged pollutants are collected by the dust collecting device 220 , and then the cleaned air moves to the heat exchanger 240 .

[0156] The air cleaned by the dust collecting device 220 exchanges heat with the refrigerant of the heat exchanger 240 while passing through the heat exchanger 240 , so that the temperature of the air is adjusted.

[0157] The temperature-adjusted air passes through the air blowing fan 230 and is discharged to the outside of the indoor unit 200 through the outlet 212 of the housing 210 .

[0158] As described above, the indoor part 200 of the air conditioner equipped with the electrostatic dust collecting device using carbon fiber according to the embodiment of the present disclosure may remove pollutants from the sucked air and adjust the temperature of the air.

[0159] In the following, reference will be made to Fig.16 An electrical appliance having an electrostatic dust collecting device using carbon fibers according to an embodiment of the present disclosure is described.

[0160] Fig.16 is a conceptual diagram illustrating an electrical appliance including an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure.

[0161] Reference Fig.16 , an electrical appliance 100 ′ having an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure may include a main body 110 , a charging device 1 , an air moving device 130 , a dust collecting device 420 , and a plurality of electronic baffles 400 .

[0162] The body 110 forms an outer shape of the electrical appliance 100' and may have various shapes according to the type of the electrical appliance 100'. The electrical appliance 100' may be any one of an air purifier, an air conditioner, a dehumidifier, a humidifier, a clothes organizer, a refrigerator, a dryer, etc. The body 110 may be provided with an inlet 111, an outlet 112, and an air passage 113 connecting the inlet 111 and the outlet 112, wherein external air is sucked in through the inlet 111 and the sucked air is discharged through the outlet 112.

[0163] The charging device 1 is disposed near the inlet 111 of the main body 110 and is configured to charge pollutants (such as dust) contained in the air sucked into the inlet 111 by using carbon fibers. The charging device 1 may be arranged on the outer surface of the main body 110 at the edge of the inlet 111. In other words, the charging device 1 may be arranged on the outer surface of the main body 110 so as not to interfere with the projection area of ​​the inlet 111. When the charging device 1 is disposed outside the inlet 111 so that the charging device 1 does not block the inlet 111, the amount of air sucked into the inlet 111 is not reduced. The configuration of the charging device 1 will be described in detail below.

[0164] The air moving device 130 is disposed inside the main body 110 and is configured to suck in external air containing pollutants through the inlet 111 and discharge the external air to the outside of the main body 110. In other words, when the air moving device 130 operates, the air containing pollutants is introduced into the inlet 111 of the main body 110, flows along the air passage 113, and is discharged through the outlet 112. A fan capable of generating a suction force capable of sucking in air may be used as the air moving device 130.

[0165] The dust collecting device 420 is disposed in the air passage 113 provided inside the main body 110 and is configured to collect pollutants charged by the charging device 1 from the air sucked in by the air moving device 130. Fig.17 An example of the dust collecting device 420 is shown in FIG.

[0166] Fig.17 It is conceptually shown in Fig.16 A cross-sectional view of an example of a dust collecting device used in an electrical appliance.

[0167] Reference Fig.17 The dust collecting device 420 may include a plurality of dust collecting plates 421 spaced apart from each other by a predetermined distance and a dust collecting voltage applier 430 configured to apply a high voltage to the plurality of dust collecting plates 421 .

[0168] The dust collecting plate 421 may include an electrode 422 and an insulating layer 423 stacked on both side surfaces of the electrode 422. In other words, the dust collecting plate 421 may be stacked in the order of an insulating layer 423, an electrode 422, and an insulating layer 423. For example, the electrode 422 may be formed of a carbon electrode, and the insulating layer 423 may be formed on both side surfaces of the electrode 422 by a polyethylene terephthalate (PET) film. However, the types of the electrode 422 and the insulating layer 423 constituting the dust collecting plate 421 are not limited thereto. The electrode 422 and the insulating layer 423 of the dust collecting plate 421 may be configured in various types as long as a high voltage can be applied.

[0169] When a high voltage is applied to the plurality of dust collecting plates 421 from the dust collecting voltage applicator 430, pollutants that are charged and turned into ions by combining with electrons generated in the charging device 1 may be collected in the plurality of dust collecting plates 421. Fig.17 In the embodiment, the dust collecting plate 421-1 at the center is connected to the ground G, and a negative high voltage is applied to the dust collecting plates 421-2 at both sides. Therefore, pollutants that become negative ions by combining with electrons emitted from the carbon fiber electrode 20 adhere to the surface of the dust collecting plate 421-1 at the center. Therefore, since pollutants contained in the sucked external air are removed by the dust collecting device 420, clean air is discharged from the dust collecting device 420.

[0170] However, when the insulating layer 423 is formed on both side surfaces of the electrode 422 of the dust collecting plate 421 as described above, the electrons generated from the carbon fiber electrode 20 may not be combined with pollutants (such as dust) but directly adhere to the surface of the insulating layer 423. When the electrons that are not combined with the pollutants adhere to the insulating layer 423, the electrons attached to the insulating layer 423 prevent the ionized pollutants combined with other electrons from adhering to the insulating layer 423, thereby reducing the ability of the dust collecting device 420 to collect pollutants. However, when the dust collecting plate does not include an insulating layer similar to the dust collecting device 420 of the above-mentioned embodiment, such a problem may not occur.

[0171] A plurality of electronic shutters 400 may be provided between the charging device 1 and the dust collecting device 420. The plurality of electronic shutters 400 are configured to block the electrons emitted from the plurality of carbon fiber electrodes 20 of the charging device 1 from flowing to the dust collecting device 420. The plurality of electronic shutters 400 may be provided in one-to-one correspondence with the plurality of carbon fiber electrodes 20 of the charging device 1. The plurality of electronic shutters 400 will be described in detail below.

[0172] The main body 110 may further include a processing part 140 that performs a predetermined process on the inhaled air. For example, when the electrical appliance 100' is implemented as an air conditioner, the main body 110 may be provided with a heat exchanger capable of performing heat exchange with the inhaled air as the processing part 140. When the electrical appliance 100' is a dehumidifier, the main body 110 may be provided with a dehumidifying device capable of removing moisture from the inhaled air as the processing part 140. In addition, when the electrical appliance 100' is a humidifier, the main body 110 may be provided with a humidifying device capable of adding moisture to the inhaled air as the processing part 140.

[0173] In the case where the electrical appliance 100 ′ is an air purifier implemented by the electrostatic dust collecting device according to an embodiment of the present disclosure, the processing part 140 may not be present in the main body 110 .

[0174] In addition, when the electrical appliance 100 ′ is a clothes organizer, a refrigerator, a dryer, etc., which is additionally provided with the electrostatic dust collecting device according to an embodiment of the present disclosure, the processing part 140 may not be included inside the main body 110 .

[0175] In the following, reference will be made to Fig.18 and Fig.19 The charging device 1 used in the electrostatic dust collecting device according to the embodiment of the present disclosure is described in detail.

[0176] Fig.18 is a perspective view illustrating a charging device of an electrostatic dust collecting device using carbon fiber having a plurality of electronic shutters according to an embodiment of the present disclosure. Fig.19 is an exploded perspective view showing a charging device and a charging device holder of an electrostatic dust collecting device using carbon fiber having a plurality of electronic shutters according to an embodiment of the present disclosure.

[0177] Reference Fig.18 and Fig.19 The charging device 1 of the electrostatic precipitator using carbon fiber according to an embodiment of the present disclosure may include a housing 10 , a plurality of carbon fiber electrodes 20 , a printed circuit board 30 , and a ground electrode 40 .

[0178] The housing 10 is formed to accommodate the plurality of carbon fiber electrodes 20 and the printed circuit board 30. The opening 11 may be formed on one surface of the housing 10 facing the tips of the plurality of carbon fiber electrodes 20, that is, on the front surface of the housing 10. The rear opening 13 may be provided on the opposite side of the one surface of the housing 10, that is, on the rear surface of the housing 10. The plurality of carbon fiber electrodes 20 may be exposed through the opening 11 of the housing 10. Therefore, the housing 10 may be formed so that air may flow through the inside of the housing 10.

[0179] In the case of this embodiment, if Fig.19As shown in FIG. 1 , the housing 10 is formed in a substantially hollow rectangular parallelepiped shape having a long length. A printed circuit board 30 to which the plurality of carbon fiber electrodes 20 are fixed is disposed inside the housing 10 .

[0180] The plurality of carbon fiber electrodes 20 are formed to generate electrons from the tips of the carbon fiber electrodes 20 when a high voltage is applied to the plurality of carbon fiber electrodes 20. The plurality of carbon fiber electrodes 20 are arranged so that the tips of the carbon fiber electrodes 20 face the opening 11 of the housing 10. Therefore, the electrons generated from the plurality of carbon fiber electrodes 20 are emitted to the outside through the opening 11 of the housing 10. Fig.16 The charging device 1 shown in FIG. 1 is arranged in the electric appliance 100′ so that the opening 11 of the housing 10 faces the inlet 111 of the body 110, and the tips of the plurality of carbon fiber electrodes 20 are arranged to face the inlet 111. Accordingly, since the electrons generated from the plurality of carbon fiber electrodes 20 are emitted to the outside through the opening 11 of the housing 10, the pollutants contained in the air introduced into the inlet 111 can be charged.

[0181] The plurality of carbon fiber electrodes 20 are arranged at regular intervals on the printed circuit board 30. The plurality of carbon fiber electrodes 20 are arranged in a straight line on the circuit board 30. In addition, the plurality of carbon fiber electrodes 20 are arranged on the printed circuit board 30 at the same height.

[0182] The printed circuit board 30 is provided with a power line 31 capable of applying power to the plurality of carbon fiber electrodes 20. The high voltage applying part 60 is connected to the power line 31 of the printed circuit board 30. Therefore. A high voltage can be applied to the plurality of carbon fiber electrodes 20 through the power line 31 of the printed circuit board 30. For example, the high voltage applying part 60 may be configured to apply a voltage of about 6 kV to the plurality of carbon fiber electrodes 20 through the power line 31 of the printed circuit board 30.

[0183] The printed circuit board 30 may be provided with a plurality of holes through which the air sucked into the housing 10 passes. A plurality of notch portions 33 through which the air passes may be provided on both side surfaces of the printed circuit board 30 (see Figure 7 ). Therefore, the plurality of notch portions 33 of the printed circuit board 30 perform the function of a plurality of holes through which air passes. The printed circuit board 30 is formed as a rectangular plate corresponding to the opening 11 of the housing 10 so that the printed circuit board 30 can be inserted into the housing 10. The plurality of notch portions 33 having a predetermined depth are formed on both side surfaces of the printed circuit board 30. Therefore, the air introduced into the housing 10 can flow through the plurality of notch portions 33 of the printed circuit board 30.

[0184] In addition, the printed circuit board 30 may be supported by a plurality of support portions 16 provided inside the housing 10. The plurality of support portions 16 may be provided on the inner surfaces of the upper and lower surfaces of the housing 10 so as to support the printed circuit board 30. In addition, a central support portion 17 may be provided on the inner surface of each of the two ends of the housing 10 to support both ends of the printed circuit board 30.

[0185] The plurality of carbon fiber electrodes 20 may include an appropriate number of carbon fiber electrodes 20 to emit electrons to all air sucked into the inlet 111 of the body 110. Fig.19 In the embodiment shown in FIG. 1 , six carbon fiber electrodes 20 are provided on the printed circuit board, but this is only an example. The number of the plurality of carbon fiber electrodes 20 and the distance between two adjacent carbon fiber electrodes 20 may be appropriately determined according to the size of the inlet 111 of the main body 110 of the charging device 1 .

[0186] In addition, the printed circuit board 30 is formed to have a length capable of supporting the plurality of carbon fiber electrodes 20 arranged in a single line. For example, the printed circuit board on which the plurality of carbon fiber electrodes 20 are arranged may be formed to have a length equal to or greater than 1 / 3 of the length of the inlet 111 of the body 110.

[0187] Each of the plurality of carbon fiber electrodes 20 may include an electrode rod 21 fixed to the printed circuit board 30 and a plurality of carbon fibers 22 arranged at a tip of the electrode rod 21 .

[0188] The electrode rod 21 may be formed in a generally cylindrical shape so as to support the plurality of carbon fibers 22 and fix the plurality of carbon fibers 22 to the printed circuit board 30. In other words, one end of the electrode rod 21 is fixed to the printed circuit board 30, and the plurality of carbon fibers 22 are arranged on the other end of the electrode rod 21. In addition, the electrode rod 21 is electrically connected to a power supply line 31 of the printed circuit board 30. The electrode rod 21 may be formed of a conductive material to apply power to the plurality of carbon fibers 22.

[0189] In the present embodiment, the electrode rod 21 is formed in a cylindrical shape having a circular cross section. However, the shape of the electrode rod 21 is not limited thereto. The electrode rod 21 may be formed in various shapes as long as the electrode rod 21 can fix the plurality of carbon fibers 22 to the printed circuit board 30. As an example, the electrode rod 21 may be formed in a columnar shape having a cross section of a polygonal shape (such as a quadrilateral, a pentagon, etc.) or a circular shape.

[0190] The plurality of carbon fibers 22 are fixed to one end of the electrode rod 21 in the form of a bundle. In other words, the plurality of carbon fibers 22 may have a brush shape. The plurality of carbon fibers 22 are spaced apart from each other so as not to contact each other. Each of the plurality of carbon fibers 22 may be formed to have a diameter of about 6 μm to 8 μm.

[0191] Therefore, when a negative (-) high voltage is applied to the printed circuit board 30, the electrons e - The electrons e emitted from the tips of the plurality of carbon fibers 22 charge the pollutants contained in the air. - Combines with pollutant c to charge the pollutant into anion c - (e - +c=c - ).

[0192] The ground electrode 40 maintains a predetermined potential difference between each of the plurality of carbon fiber electrodes 20 and the surrounding air so that a predetermined amount of electrons are generated from the plurality of carbon fiber electrodes 20 even after a period of time. For this purpose, the ground electrode 40 is arranged around the plurality of carbon fiber electrodes 20. For example, the ground electrode 40 may be arranged near the printed circuit board 30 so as not to face the tips of the plurality of carbon fiber electrodes 20. In other words, the ground electrode 40 may be arranged behind the printed circuit board 30 opposite to one surface of the printed circuit board 30 on which the plurality of carbon fiber electrodes 20 are provided or the plurality of carbon fiber electrodes 20.

[0193] For example, the ground electrode 40 may be disposed on the rear surface of the housing 10 (see Figure 5 and Figure 6 ). To this end, the electrode fixing portion 18 to which the ground electrode 40 is fixed may be provided on the rear surface of the housing 10. Therefore, the ground electrode 40 may be provided on the rear surface of the housing 10 spaced a predetermined distance from the opposite surface of the printed circuit board 30, wherein the opposite surface of the printed circuit board 30 is opposite to the plurality of carbon fiber electrodes 20 provided on one surface of the printed circuit board 30. At this time, the rear opening 13 of the housing 10 may be provided on the rear surface of the housing 10 at both sides of the ground electrode 40.

[0194] The ground electrode 40 is formed of a conductive thin metal plate and is formed to have a length corresponding to the length of the printed circuit board 30 so that all of the plurality of carbon fiber electrodes 20 can maintain a predetermined potential difference. Fig.19 As shown in FIG. 1 , in the case of the present embodiment, the ground electrode 40 is formed of a thin strip-shaped metal plate.

[0195] In addition, the ground electrode 40 may include a plurality of through holes 41. A plurality of fixing pins 18a (see Figure 5 ) is provided at the electrode fixing portion 18 of the housing 10 (see Figure 5Therefore, when the plurality of fixing pins 18 a of the housing 10 are inserted into the plurality of through holes 41 of the ground electrode 40 , the ground electrode 40 is fixed to the electrode fixing portion 18 of the housing 10 .

[0196] The ground electrode 40 is connected to the external ground 70. For example, the ground electrode 40 may be connected to the external ground 70 by connecting a ground wire (not shown) connected to the ground 70 of the external power source to one end 43 of the ground electrode 40. As described above, when the ground electrode 40 is connected to the external ground 70, ions saturated around the plurality of carbon fiber electrodes 20 are released to the external ground 70 through the ground electrode 40, so that a predetermined potential difference may be maintained around the ground electrode 40. Therefore, the plurality of carbon fiber electrodes 20 may always stably generate electrons regardless of the passage of time.

[0197] In the case where the plurality of carbon fiber electrodes 20 are exposed to the outside, when a user cleans the appliance 100' equipped with the electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure, a part of the user's hand or body may contact the plurality of carbon fiber electrodes 20. At this time, since a high voltage is applied to the plurality of carbon fiber electrodes 20, when a part of the hand or body contacts the carbon fiber electrodes 20, the user may receive an electric shock.

[0198] In order to prevent electric shock, a protection grid 50 may be provided in the opening 11 of the front surface of the housing 10 facing the plurality of carbon fiber electrodes 20. The protection grid 50 blocks the user's hands or fingers from contacting the carbon fiber electrodes 20. The protection grid 50 may be formed in various patterns that block the user's hands or fingers and allow air and electrons generated from the plurality of carbon fiber electrodes 20 to pass therethrough.

[0199] Reference Fig.18 and Fig.19 The protective grid 50 is formed in a generally hollow rectangular parallelepiped shape having a long length. The front surface of the protective grid 50 is provided with a pattern portion 51 through which air can be sucked and electrons can be emitted. The rear surface of the protective grid 50 coupled to the housing 10 is open.

[0200] A plurality of fixing protrusions for fixing the printed circuit board 30 to the housing 10 may be provided at the rear end of the protection grid 50. When the protection grid 50 is coupled to the opening 11 of the housing 10, the pattern portion 51 of the protection grid 50 is spaced apart from the tips of the plurality of carbon fiber electrodes 20 by a predetermined distance, and the printed circuit board 30 is fixed to the inside of the housing 10. Therefore, there is a certain gap between the inner surface of the front surface of the protection grid 50 and the tips of the plurality of carbon fiber electrodes 20 fixed to the housing 10.

[0201] In addition, a plurality of fixing hooks 55 for coupling the protection grid 50 to the housing 10 may be provided on the upper and lower surfaces of the rear end of the protection grid 50. A plurality of fixing grooves 15 coupled with the plurality of fixing hooks 55 of the protection grid 50 may be provided on the upper and lower surfaces of the front end of the housing 10 corresponding to the plurality of fixing hooks 55.

[0202] On the other hand, the pattern portion 51 of the protection grid 50 may be formed in various patterns having holes 53 that block the user's hands or fingers and through which air and electrons can pass. For example, the pattern portion 51 of the protection grid 50 may be formed as described above. FIG. 9A to FIG. 9G Various patterns shown in .

[0203] Such a charging device 1 may be supported by the charging device holder 401. Since the charging device holder 401 is disposed near the inlet 111 of the main body 110, the charging device 1 is fixed to the main body 110 by the charging device holder 401.

[0204] The plurality of electronic baffles 400 are arranged between the charging device 1 and the dust collecting device 420, and can prevent the electrons generated in the charging device 1 from being directly attached to the dust collecting plate 421 of the dust collecting device 420. For example, the electronic baffle 400 is arranged above the dust collecting device 420 below the carbon fiber electrode 20 of the charging device 1, so as to prevent the electrons emitted from the carbon fiber electrode 20 from being directly attached to the dust collecting plate 421 of the dust collecting device 420 without being combined with pollutants such as dust. At this time, some electrons are combined with fine particles that are not pollutants such as dust and exist between the carbon fiber electrode 20 and the dust collecting device 420 to become fine particle anions, and the fine particle anions can be attached to the dust collecting plate 421 of the dust collecting device 420. However, the electronic baffle 400 can also prevent this situation.

[0205] When the electrons emitted from the carbon fiber electrode 20 adhere to the surface of the grounded dust collecting plate 421-1 of the dust collecting device 420 without ionizing the pollutants, the surface of the dust collecting plate 421-1 is saturated with electrons and prevents the pollutants that have become negative ions by combining with the electrons from adhering to the dust collecting plate 421-1. Therefore, the dust collecting ability of the dust collecting device 420 may be reduced. In order to prevent the deterioration of the dust collecting ability of the dust collecting device 420, the plurality of electronic baffles 400 may be provided.

[0206] The plurality of electron shields 400 may be formed of an electrical insulator through which electric current does not pass, For example, the plurality of electron shields 400 may be formed of a metal having a surface resistance of 108 Ω·cm.

[0207] like Fig.19As shown in FIG. 1 , the plurality of electronic shutters 400 may be arranged to extend from the lower end of the charging device holder 401 toward the charging device 1. In other words, the plurality of electronic shutters 400 may be formed substantially at a right angle relative to the charging device holder 401. Each of the plurality of electronic shutters 400 may have a certain length so that when the charging device 1 is coupled to the charging device holder 401, as shown in FIG. Fig.18 As shown in FIG. 4 , the front portion of the electronic shutter 400 protrudes by a predetermined length L from the front surface of the charging device 1 .

[0208] The plurality of electronic shutters 400 may be formed to be spaced at regular intervals along the longitudinal direction of the charging device holder 401. The plurality of electronic shutters 400 may be formed to correspond one-to-one to the plurality of carbon fiber electrodes 20 of the charging device 1. For example, Fig.19 As shown in FIG. 1 , when the charging device 1 includes six carbon fiber electrodes 20 , six electron shutters 400 are also provided. When the charging device holder 401 is injection molded using plastic, the plurality of electron shutters 400 may be integrally injection molded with the charging device holder 401 .

[0209] exist Fig.19 In the embodiment, the plurality of electronic baffles 400 are formed as a charging device holder 401. However, the location where the plurality of electronic baffles 400 are formed is not limited thereto. The plurality of electronic baffles 400 may be formed in various locations as long as the plurality of electronic baffles 400 may be located below the plurality of carbon fiber electrodes 20. Fig. 20 and Fig.21 A case where the plurality of electronic shutters 400 are provided in the protection grid 50 and the housing 10 is described.

[0210] Fig. 20 is an exploded perspective view of a charging device showing that a plurality of electronic shutters are disposed in a protective grid of the charging device.

[0211] Reference Fig. 20 , the plurality of electronic baffles 400 may be formed in the protective grid 450. The plurality of electronic baffles 400 may be formed to protrude forward from the lower end of the protective grid 450. The plurality of electronic baffles 400 may be formed substantially at right angles to the protective grid 450. The plurality of electronic baffles 400 may be formed to be spaced at regular intervals along the longitudinal direction of the protective grid 450. The plurality of electronic baffles 400 may be formed to correspond one to one with the plurality of carbon fiber electrodes 20 disposed under the protective grid 450. When the protective grid 450 is injection molded using plastic, the plurality of electronic baffles 400 may be integrally injection molded with the protective grid 450.

[0212] Fig.21is an exploded perspective view of the charging device showing that the plurality of electronic shutters are disposed in a housing of the charging device.

[0213] Reference Fig.21 , the plurality of electronic baffles 400 may be formed in the housing 410. The plurality of electronic baffles 400 may protrude from the lower end of the opening 11 of the housing 410 toward the protective grid 50. At this time, each of the plurality of electronic baffles 400 may have a certain length so that when the protective grid 50 is coupled to the housing 410, as shown in FIG. Fig.18 As shown in FIG. 4 , the front portion of the electronic shutter 400 protrudes by a predetermined length L from the front surface of the protection grid 50 .

[0214] The plurality of electronic baffles 400 may be formed substantially at right angles to the housing 410. The plurality of electronic baffles 400 may be formed to be spaced at regular intervals along the longitudinal direction of the housing 410. The plurality of electronic baffles 400 may be formed to correspond one-to-one with the plurality of carbon fiber electrodes 20 disposed inside the housing 410. When the housing 410 is injection molded using plastic, the plurality of electronic baffles 400 may be integrally injection molded with the housing 410.

[0215] The electronic baffle 400 may affect the amount of air introduced into the inlet 111. In detail, when the size of the electronic baffle 400 is too large, the amount of air introduced into the inlet 111 may be reduced. Therefore, the size of the electronic baffle 400 may be determined so that the number of electrons directly attached to the dust collecting plate 431 among the electrons emitted from the carbon fiber electrode 20 may be minimized while minimizing the reduction in the amount of air introduced into the inlet 111.

[0216] When the width W of the portion of the electronic baffle 400 protruding from the front surface of the protective grid 50 is longer than the protruding length L of the electronic baffle 400, the reduction in the amount of air can be minimized and the number of electrons directly attached to the dust collecting plate 421 among the electrons emitted from the carbon fiber electrode 20 can be minimized. Fig.18 When the width W of the electronic baffle 400 is made too long, the amount of air flowing into the inlet 111 is reduced, thereby reducing the clean area that can be collected by the dust collecting device 420.

[0217] In addition, the installation position of the electronic baffle 400 may affect the electronic baffle 400 to block the electrons emitted from the carbon fiber electrode 20 from directly attaching to the dust collecting plate 421. Fig. 22 The positional relationship among the electronic shutter 400, the carbon fiber electrode 20, and the dust collecting device 420 is described.

[0218] Fig. 22 and Fig.231 is a conceptual diagram showing a situation where electrons emitted from a carbon fiber electrode are blocked by an electron shield.

[0219] Reference Fig. 22 , the carbon fiber electrode 20 is arranged substantially perpendicular to the flow direction F of the air flowing into the dust collecting device 420. The electronic baffle 400 is arranged substantially in parallel with the dust collecting device 420 between the carbon fiber electrode 20 and the dust collecting device 420. Therefore, the electronic baffle 400 can prevent the electrons generated from the carbon fiber electrode 20 from being directly introduced into and attached to a predetermined area of ​​the dust collecting device 420. At this time, the electronic baffle 400 is formed to prevent the electrons from being directly attached to the electrostatic dust collecting device 420 in an area of ​​1 / 2 or more of the length of the dust collecting device 420. In this way, the deterioration of the dust collecting ability of the dust collecting device 420 caused by the electrons directly attached to the dust collecting device 420 can be prevented, or the deterioration of the dust collecting ability of the dust collecting device 420 caused by the electrons directly attached to the dust collecting device 420 can be minimized.

[0220] exist Fig. 22 In the embodiment, the length of the dust collecting device 420 is A, the length of the portion of the dust collecting device 420 to which the electrons cannot directly attach through the electronic baffle 400 is B, the distance between the carbon fiber electrode 20 and the upper surface of the dust collecting device 420 is C, and the distance between the carbon fiber electrode 20 and the electronic baffle 400 is D. In addition, Fig. 22 In FIG. 4 , E represents the path along which electrons generated from the carbon fiber electrode 20 move to the dust collecting device 420 .

[0221] Reference Fig. 22 , some electrons generated in the carbon fiber electrode 20 may be blocked by the electronic baffle 400 and may not be directly introduced into the dust collecting device 420. Some electrons that are not blocked by the electronic baffle 400 may be directly introduced into the dust collecting device 420. At this time, in order to make the length B of the portion of the dust collecting device 420 blocked by the electronic baffle 400 equal to or greater than 1 / 2 of the length A of the dust collecting device 420 (that is, B ≥ 1 / 2A), the distance D between the carbon fiber electrode 20 and the electronic baffle 400 needs to be less than 1 / 2 of the distance C between the carbon fiber electrode 20 and the upper surface of the dust collecting device 420 (that is, D < 1 / 2C).

[0222] As an example, Fig.23As shown in , the carbon fiber electrode 20 may be arranged in the same direction as the flow direction F of the air introduced into the dust collecting device 420. Even in this case, the electronic baffle 400 may be formed to prevent the electrons generated from the carbon fiber electrode 20 from directly attaching to the dust collecting device 420 in a region of 1 / 2 or more of the length of the dust collecting device 420, thereby preventing or minimizing the deterioration of the dust collecting ability of the dust collecting device 420 caused by the electrons directly attached to the dust collecting device 420.

[0223] exist Fig.23 In the embodiment, the length of the dust collecting device 420 is A, the length of the portion of the dust collecting device 420 to which the electrons cannot directly attach through the electronic baffle 400 is B, the distance between the carbon fiber electrode 20 and the upper surface of the dust collecting device 420 is C, and the distance between the carbon fiber electrode 20 and the electronic baffle 400 is D. In addition, Fig.23 In FIG. 4 , E represents the path along which electrons generated from the carbon fiber electrode 20 move to the dust collecting device 420 .

[0224] Reference Fig.23 , some electrons generated in the carbon fiber electrode 20 may be blocked by the electronic baffle 400 and may not be directly attached to the dust collecting device 420. Some electrons that are not blocked by the electronic baffle 400 may be directly introduced into the dust collecting device 420. At this time, in order to make the length B of the portion of the dust collecting device 420 blocked by the electronic baffle 400 equal to or greater than 1 / 2 of the length A of the dust collecting device 420 (that is, B ≥ 1 / 2A), the distance D between the carbon fiber electrode 20 and the electronic baffle 400 needs to be less than 1 / 2 of the distance C between the carbon fiber electrode 20 and the upper surface of the dust collecting device 420 (that is, D < 1 / 2C).

[0225] The charging device 1 , the plurality of electronic shutters 400 , the dust collecting device 420 , and the air moving device 130 as described above may constitute an electrostatic dust collecting device using carbon fibers according to an embodiment of the present disclosure.

[0226] The charging device 1 having the plurality of electronic baffles 400 as described above may be arranged at the inlet 111 of the electrical appliance 100'. Fig.24 As shown in FIG. 1 , the charging device 1 may be disposed in an indoor part 200 ′ of the air conditioner.

[0227] Fig.24 is a perspective view showing a state in which a charging device having a plurality of electronic shutters of an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure is arranged in an indoor part of an air conditioner.

[0228] Reference Fig.24, the charging device 1 is arranged at one side of the inlet 211 so as not to interfere with the inlet 211. The carbon fiber electrode 20 is disposed inside the charging device 1. The protective grid 50 is disposed on the front surface of the charging device 1. Therefore, the protective grid 50 is located in front of the carbon fiber electrode 20.

[0229] The electronic baffle 400 is formed to protrude from the front surface of the charging device 1 (that is, the front surface of the protective grid 50). Therefore, the electronic baffle 400 protrudes above the inlet 211. A dust collecting device (not shown) is provided below the electronic baffle 400. Therefore, the electrons generated from the carbon fiber electrode 20 do not flow directly to the dust collecting device below the carbon fiber electrode 20, but collide with the electronic baffle 400 to be dispersed above the inlet 211. The dispersed electrons combine with pollutants contained in the air flow introduced into the inlet 211 to ionize the pollutants. The pollutants combined with the electrons become negative ions and attach to the dust collecting plate 421 of the dust collecting device 420 (see Fig.17 ). In detail, the pollutants turned into negative ions are attached to the surface of the grounded dust collecting plate 421-1 and are removed from the introduced air.

[0230] When the electron baffle 400 is disposed below the carbon fiber electrode 20 as described above, the amount of electrons generated from the carbon fiber electrode 20 that directly flows into the dust collecting device 420 can be reduced. Fig.25 Describe this.

[0231] Fig.25 is a diagram showing that when the charging device has an electron shutter, electrons generated in the carbon fiber electrode directly move to a region of the dust collecting device.

[0232] Reference Fig.25 , the electrons generated from the carbon fiber electrode 20 are diffused at a certain angle. At this time, because the electrons moving downward of the carbon fiber electrode 20 collide with the electronic baffle 400, they do not directly enter the dust collecting device 420. However, the electrons above the straight line E1 connecting the tip of the carbon fiber electrode 20 and the tip of the electronic baffle 400 can flow directly into the dust collecting device 420. However, because it takes time for the electrons above the straight line E1 to move from the tip of the carbon fiber electrode 20 to the dust collecting device 420, the electrons are mixed with the air flow F flowing into the inlet 211. In addition, the electrons dispersed by colliding with the electronic baffle 400 may also be mixed with the air flow F flowing into the inlet 211.

[0233] When the electrons are mixed with the air flow F, the electrons are combined with pollutants (such as dust) contained in the air flow to ionize the pollutants. For example, when a negative voltage is applied to the carbon fiber electrode 20, electrons are generated from the carbon fiber electrode 20, and the electrons are combined with pollutants to make the pollutants become negative ions. The pollutants that have become negative ions do not pass through the dust collecting device 420 and are attached to the dust collecting plate 421, thereby being removed from the air flow F.

[0234] When the electronic baffle 400 is arranged under the carbon fiber electrode 20 as described above, some electrons generated from the carbon fiber electrode 20 are blocked from being directly introduced into the dust collecting device 420 and are blocked from attaching to the dust collecting device 420, and some of the electrons are combined with pollutants, so that the dust collecting capacity of the dust collecting device 420 can be improved.

[0235] However, when the electron shield 400 is not disposed below the carbon fiber electrode 20 , many electrons generated from the carbon fiber electrode 20 may be directly introduced into the dust collecting device 420 .

[0236] Fig.26 is a diagram showing that electrons generated in a carbon fiber electrode directly move to a region of a dust collecting device when the charging device does not include an electron shutter.

[0237] Reference Fig.26 , the electrons generated from the carbon fiber electrode 20 are diffused at a certain angle. At this time, because there is no electron baffle 400 below the carbon fiber electrode 20, the electrons moving downward (the electrons above the straight line E1) of the carbon fiber electrode 20 can directly flow into the dust collecting device 420. The electrons introduced into the dust collecting device 420 are attached to the surface of the dust collecting plate 421 so that the dust collecting plate 421 has a negative (-) potential.

[0238] The electrons generated from the carbon fiber electrode 20 and moving in the direction of the straight line E2 are mixed with the air flow F flowing into the inlet 211. When the electrons are mixed with the air flow F, the electrons combined with the pollutants (such as dust) contained in the air flow F ionize the pollutants. For example, when a negative voltage is applied to the carbon fiber electrode 20, electrons are generated from the carbon fiber electrode 20, and the electrons are combined with the pollutants to make the pollutants become negative ions. Therefore, the pollutants that have become negative ions are introduced into the dust collecting device 420. However, because the dust collecting plate 421 of the dust collecting device 420 has a negative potential due to the electrons directly introduced from the carbon fiber electrode 20, the ionized pollutants do not adhere to the dust collecting plate 421 and pass through the dust collecting device 420. Therefore, the dust collecting capacity of the dust collecting device 420 can be reduced.

[0239] Will refer to Fig. 27 Cleaning areas of an electrostatic precipitator having the above-described electronic shutter 400 and an electrostatic precipitator not having the electronic shutter 400 are described.

[0240] Fig. 27 The figure is a histogram and a normal distribution curve diagram comparing the cleaning area when the electrostatic dust collector using carbon fiber according to the embodiment of the present disclosure is provided with an electronic baffle and the cleaning area when the electrostatic dust collector using carbon fiber according to the embodiment of the present disclosure is provided without an electronic baffle. Fig. 27 In the figure, the horizontal axis represents the cleaning area m 2 , the vertical axis represents the numerical value.

[0241] exist Fig. 27 In the figure, the clean area of ​​the electrostatic precipitator with the electronic baffle 400 is shown by the normal distribution curve ①, and the clean area of ​​the electrostatic precipitator without the electronic baffle is shown by the normal distribution curve ②. The black bar below the normal distribution curve ① is a histogram showing the clean area of ​​the electrostatic precipitator with the electronic baffle 400, and the shaded bar below the normal distribution curve ② is a histogram showing the clean area of ​​the electrostatic precipitator without the electronic baffle.

[0242] Reference Fig. 27 , the distribution of the clean area of ​​the electrostatic precipitator with the electronic baffle 400 is 0.68, and the distribution of the clean area of ​​the electrostatic precipitator without the electronic baffle is 2.62. Therefore, it can be seen that the distribution of the clean area of ​​the electrostatic precipitator with the electronic baffle is improved. In addition, the central value of the clean area of ​​the electrostatic precipitator with the electronic baffle 400 is 28.1m 2 The central value of the cleaning area of ​​the electrostatic dust collector without an electronic baffle is 26.1m 2 Therefore, it can be seen that the clean area of ​​the electrostatic precipitator with the electronic baffle 400 increases. In other words, it can be seen that the clean area of ​​the electrostatic precipitator with the electronic baffle 400 increases by about 8% compared to the clean area of ​​the electrostatic precipitator without the electronic baffle.

[0243] In the following, reference will be made to Fig.28 A case where the electrostatic dust collecting device using carbon fiber according to the embodiment of the present disclosure as described above is applied to an indoor part of an air conditioner is described.

[0244] Fig.28 is a cross-sectional view illustrating an indoor part of an air conditioner including an electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure.

[0245] Reference Fig.28 The indoor unit 200 ′ of the air conditioner having the electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure may include a housing 210 , a charging device 1 , a plurality of electronic shutters 400 , a dust collecting device 420 , a heat exchanger 240 , and an air blowing fan 230 .

[0246] The housing 210 forms the appearance of the indoor part 200' of the air conditioner. The housing 210 includes an inlet 211 for introducing external air and an outlet 212 for discharging air that exchanges heat with the heat exchanger 240. The housing 210 is provided with an air passage 213 through which the inlet 211 and the outlet 212 communicate with each other and through which the sucked external air passes.

[0247] The charging device 1 is arranged on the outer surface of the housing 210 so as to be adjacent to the inlet 211. The charging device 1 is configured to charge pollutants (such as dust) contained in the air flowing into the inlet 211 by using carbon fibers. The charging device 1 may be arranged at a position on the outer surface of the housing 210 where the charging device 1 does not interfere with the projection area S of the inlet 211, that is, at the edge of the inlet 211. For example, Fig.28 As shown in , the charging device 1 may be arranged so that the protective grille 50 of the charging device 1 does not exceed the end 211a of the inlet 211 of the housing 210. In other words, the front surface of the charging device 1 may coincide with the end 211a of the inlet 211 of the housing 210 or may be spaced apart from the end 211a of the inlet 211 by a certain distance.

[0248] When the charging device 1 is arranged outside the inlet 211 so that the charging device 1 does not block the inlet 211 as described above, the amount of air sucked into the inlet 211 does not decrease. Therefore, the cooling and heating efficiency of the indoor part 200' can be prevented from decreasing by the charging device 1 according to an embodiment of the present disclosure.

[0249] The charging device 1 may include a printed circuit board 30 on which the plurality of carbon fiber electrodes 20 are arranged, a housing 10 accommodating the plurality of carbon fiber electrodes 20 and the printed circuit board 30, a protective grid 50 disposed in an opening 11 of the housing 10 and preventing a user from contacting the tips of the plurality of carbon fiber electrodes 20, and a ground electrode 40 disposed in the housing 10. Such a charging device 1 is the same as the above-described charging device 1; therefore, a detailed description thereof is omitted.

[0250] The plurality of electronic shutters 400 are arranged between the charging device 1 and the dust collecting device 420. The plurality of electronic shutters 400 are arranged to correspond to the plurality of carbon fiber electrodes 20 of the charging device 1 one by one. The plurality of electronic shutters 400 protrude from the front surface of the charging device 1 by a predetermined length and are located above the inlet 211 (see Fig.24 ). In addition, the plurality of electronic shutters 400 are provided to protrude by a predetermined length from one end 211a of the inlet 211 of the housing 210. The plurality of electronic shutters 400 have been described above; therefore, a detailed description thereof is omitted.

[0251] The dust collecting device 420 is disposed in the air passage 213 inside the housing 210 and is configured to collect pollutants charged by the charging device 1 from the air sucked in by the air blowing fan 230. The dust collecting device 420 may include, for example, a plurality of dust collecting plates spaced a predetermined distance from each other and a dust collecting voltage applicator configured to apply a high voltage to the plurality of dust collecting plates. When a high voltage is applied to the plurality of dust collecting plates by the dust collecting voltage applicator, pollutants ionized by combining with electrons generated by the charging device 1 may be collected in the plurality of dust collecting plates. The dust collecting device 420 is the same as the dust collecting device 420 described above; therefore, a detailed description thereof is omitted.

[0252] The heat exchanger 240 adjusts the temperature of the air by performing heat exchange with the air sucked by the air blowing fan 230. For example, when the indoor unit 200' of the air conditioner cools the room, the heat exchanger 240 cools the air sucked by the air blowing fan 230 to lower the temperature of the air. In addition, when the indoor unit 200' of the air conditioner heats the room, the heat exchanger 240 heats the air sucked by the air blowing fan 230 to increase the temperature of the air. The heat exchanger 240 is the same as or similar to a heat exchanger used in the indoor unit of a conventional air conditioner; therefore, a detailed description thereof is omitted.

[0253] The air blowing fan 230 is arranged inside the housing 210, and is configured so that external air is sucked in through the inlet 211, passes through the heat exchanger 240, and is then discharged to the outside of the housing 210 through the outlet 212. In other words, when the air blowing fan 230 is operated, air containing pollutants is introduced into the inlet 211 of the housing 210, and the introduced air passes through the dust collecting device 420 and the heat exchanger 240 along the air passage 213, and is then discharged through the outlet 212. Since the air blowing fan 230 generates a suction force capable of sucking in external air, the air blowing fan 230 can serve as an air moving device of the electrostatic dust collecting device according to an embodiment of the present disclosure.

[0254] Will refer to Fig.28 The operation of the indoor unit 200' of the air conditioner having the above-mentioned structure is described.

[0255] When the indoor unit 200' is in operation, a high voltage is applied from the high voltage applying unit 60 (see Fig.16) is applied to the charging device 1 provided on the outer surface of the housing 210 adjacent to the inlet 211. When a high voltage is applied to the charging device 1, electrons are emitted from the plurality of carbon fiber electrodes 20 of the charging device 1. The electrons emitted from the charging device 1 are combined with pollutants in the air flow flowing into the inlet 211, so that the pollutants become negative ions (or anions). At this time, the plurality of electron baffles 400 block some of the electrons emitted from the charging device 1 from flowing directly into the dust collecting device 420. In other words, some of the electrons emitted from the charging device 1 collide with the plurality of electron baffles 400 and are then dispersed above the inlet 211, thereby charging the pollutants contained in the air flow flowing into the inlet 211.

[0256] In addition, when the indoor part 200' operates, the air blowing fan 230 operates so that the external air F is introduced into the housing 210 through the inlet 211. At this time, pollutants contained in the external air flow F introduced into the inlet 211 are charged by the charging device 1.

[0257] While the introduced external air passes through the dust collecting device 420, the charged pollutants are collected by the dust collecting device 420. At this time, since the plurality of electronic baffles 400 prevent some electrons generated from the charging device 1 from being attached to the dust collecting device 420 without being combined with the pollutants, the dust collecting device 420 can collect the charged pollutants. The air passing through the dust collecting device 420 moves to the heat exchanger 240.

[0258] The air cleaned by the dust collecting device 420 exchanges heat with the refrigerant of the heat exchanger 240 while passing through the heat exchanger 240 , so that the temperature of the air is adjusted.

[0259] The temperature-adjusted air passes through the air blowing fan 230 and is discharged to the outside of the indoor unit 200 ′ through the outlet 212 of the housing 210 .

[0260] As described above, the indoor part 200 ′ of the air conditioner equipped with the electrostatic dust collecting device using carbon fiber according to the embodiment of the present disclosure may remove pollutants from the sucked air and adjust the temperature of the air.

[0261] Furthermore, the electrical appliance having the electrostatic dust collecting device using carbon fibers according to an embodiment of the present disclosure includes a ground electrode; therefore, the plurality of carbon fiber electrodes may always stably emit electrons.

[0262] In addition, since the charging device according to an embodiment of the present disclosure is provided with a protective grid in front of the plurality of carbon fiber electrodes, it can prevent the user's hands or fingers from contacting the plurality of carbon fiber electrodes. Therefore, according to the present disclosure, when the user cleans the indoor parts of the air conditioner, the user's hands or fingers will not contact the plurality of carbon fiber electrodes and suffer an electric shock.

[0263] Furthermore, in the electrostatic dust collecting device using carbon fiber according to an embodiment of the present disclosure, the plurality of electron baffles prevent electrons generated from the carbon fiber electrodes from adhering to the dust collecting device without combining the electrons with pollutants, so that the dust collecting device can maintain dust collecting capability.

[0264] Although the embodiments of the present disclosure have been described, once those skilled in the art are aware of the basic inventive concept, they may conceive of other variations and modifications of the embodiments. Therefore, the present disclosure intends that the claims should be interpreted as including both the above embodiments and all such variations and modifications that fall within the spirit and scope of the inventive concept.

Claims

1. An electrical appliance, comprising: a main body, comprising an inlet and an air passage communicating with the inlet; an air moving device disposed inside the body and configured to draw air containing pollutants into the air passage through the inlet in the body and to discharge the air to the outside of the body; a charging device disposed on an outer surface of the body at an edge of the inlet, the charging device being configured to charge pollutants in the air drawn in through the inlet; as well as a dust collecting device disposed in the air passage and configured to collect pollutants charged by the charging device, The charging device includes: case; a printed circuit board accommodated in the housing; a plurality of carbon fiber electrodes arranged on the printed circuit board and inside the housing, protruding toward the inlet, and configured to generate electrons to charge pollutants in the air drawn in through the inlet; and A ground electrode is disposed on the housing on an opposite side of the printed circuit board relative to the plurality of carbon fiber electrodes.

2. The electrical appliance according to claim 1, further comprising: a plurality of electron baffles arranged between the charging device and the dust collecting device and configured to block a portion of the electrons emitted from the plurality of carbon fiber electrodes of the charging device from directly flowing from the plurality of carbon fiber electrodes to the dust collecting device, The plurality of electronic baffles are arranged to correspond to the plurality of carbon fiber electrodes respectively.

3. The electrical appliance of claim 2, wherein The charging device is fixed to a charging device holder provided in the main body, and The plurality of electronic shutters are disposed at regular intervals in the charging device holder.

4. The electrical appliance as claimed in claim 2, in, The housing includes an opening, wherein the opening is spaced apart from tips of the plurality of carbon fiber electrodes by a predetermined distance, and the plurality of carbon fiber electrodes are exposed through the opening.

5. The electrical appliance of claim 4, wherein The ground electrode is arranged on an outer surface of the housing on an opposite side of the printed circuit board relative to the plurality of carbon fiber electrodes.

6. The electrical appliance of claim 4, wherein The ground electrode is arranged on an inner surface of the housing on an opposite side of the printed circuit board relative to the plurality of carbon fiber electrodes.

7. The electrical appliance of claim 4, wherein The plurality of electronic shutters are disposed on an outer surface of the housing.

8. The electrical appliance of claim 4, further comprising: A protective grid is arranged on the opening of the housing to cover the plurality of carbon fiber electrodes.

9. The electrical appliance according to claim 8, wherein: The protection grid includes holes arranged in at least one of a triangular pattern, a square pattern, a pentagonal pattern, a hexagonal pattern, a diamond pattern, a circular pattern, and an oval pattern.

10. The electrical appliance of claim 9, wherein The diameter of the inscribed circle of the pattern of holes of the protective grid does not exceed 6 mm.

11. The electrical appliance of claim 4, wherein The housing further includes a rear opening disposed in the housing on an opposite side of the printed circuit board relative to the inlet.

12. The electrical appliance of claim 1, wherein Each of the plurality of carbon fiber electrodes comprises: an electrode rod fixed to the printed circuit board; as well as A plurality of carbon fibers are disposed at the tip of the electrode rod.

13. The electrical appliance of claim 12, wherein The plurality of carbon fiber electrodes are arranged in parallel with the printed circuit board, and The ground electrode is arranged on the printed circuit board.

14. The electrical appliance of claim 13, wherein The printed circuit board includes a power supply line for applying a high voltage to the plurality of carbon fiber electrodes and a ground line for connecting the ground electrode to an external ground.

15. The electrical appliance of claim 1, wherein The charging device is arranged on the outer surface of the main body at a position where the charging device does not overlap with the inlet.

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