Air conditioner

Abstract

This air conditioner comprises: a blowing fan for forming an air flow; a housing accommodating the blowing fan, and including a first surface, a second surface opposite to the first surface, a third surface between the first surface and the second surface, and a fourth surface that is opposite to the third surface between the first surface and the second surface, the housing having suction ports formed in the first surface, the second surface, the third surface and the fourth surface; and an electric dust collection device accommodated in the housing, wherein the electric dust collection device can include: a dust collection electrode for collecting aerosol from the air flowing into the housing by means of the blowing fan; a discharge electrode, which generates ions toward the suction port and is positioned at the upstream side of the dust collection electrode; an electric field induction electrode which is grounded to form an electric field with the discharge electrode, and which is positioned at the upstream side of the discharge electrode; and a ground electrode positioned at the downstream side of the discharge electrode and the upstream side of the dust collection electrode such that the ions adhere thereto.

Description

air conditioner

[0001] The present disclosure relates to an air conditioner, and more particularly, to an air conditioner including an electrostatic precipitator.

[0002] High concentrations of aerosols in confined spaces such as homes, rooms, shopping malls, factories, and offices can be detrimental to human health. These aerosols can be generated by smoking, cooking, cleaning, welding, and grinding in confined spaces.

[0003] An electrostatic precipitator can be used in an air conditioner having an air purification function as a device for removing such aerosols.

[0004] An electrostatic precipitator may include a charging unit that charges an aerosol in the air through discharge, and a collecting unit that is composed of a high-voltage electrode and a low-voltage electrode and captures the aerosol charged by the charging unit.

[0005] One aspect of the present disclosure provides an air conditioner with improved aesthetics.

[0006] One aspect of the present disclosure provides an air conditioner with improved dust collection efficiency.

[0007] The technical problems to be achieved in the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present disclosure belongs from the description below.

[0008] An air conditioner according to one aspect of the present disclosure comprises a blower fan configured to form an air flow, a housing that accommodates the blower fan and includes a first surface, a second surface opposite the first surface, a third surface between the first surface and the second surface, and a fourth surface opposite the third surface between the first surface and the second surface, wherein an intake port is formed on the first surface, the second surface, the third surface, and the fourth surface, and an electric dust collector accommodated in the housing, wherein the electric dust collector may include a collecting electrode configured to capture an aerosol from air introduced into the housing by the blower fan, a discharge electrode configured to generate ions toward the intake port and positioned upstream of the collecting electrode, an electric field induction electrode grounded to form an electric field with the discharge electrode and positioned upstream of the discharge electrode, and a grounding electrode positioned downstream of the discharge electrode and upstream of the collecting electrode so that the ions are attached.

[0009] An air conditioner according to one aspect of the present disclosure may include a housing, a blower fan disposed within the housing and configured to form an air flow, and an electrostatic precipitator accommodated in the housing, wherein the electrostatic precipitator may include a collecting electrode configured to capture an aerosol from air introduced into the housing by the blower fan, a discharge electrode configured to generate ions and positioned below the collecting electrode, a first grounding electrode grounded to form an electric field with the discharge electrode and positioned below the discharge electrode, and a second grounding electrode positioned above the discharge electrode and below the collecting electrode so that the ions are attached.

[0010] An air conditioner according to one aspect of the present disclosure may include a blower fan, a housing that accommodates the blower fan and includes a first side, a second side opposite the first side, a third side between the first side and the second side, and a fourth side opposite the third side between the first side and the second side, wherein the housing includes a housing having suction ports formed on the first side, the second side, the third side, and the fourth side, and an electric dust collector accommodated in the housing, wherein the electric dust collector may include a dust collecting electrode configured to capture an aerosol from air introduced into the housing by the blower fan, a discharge electrode configured to generate ions toward the suction port and positioned below the dust collecting electrode, an electric field induction electrode that is grounded to form an electric field with the discharge electrode and positioned below the discharge electrode, and a grounding electrode positioned above the discharge electrode and below the dust collecting electrode.

[0011] According to one aspect of the present disclosure, an air conditioner having improved aesthetics can be provided because the discharge electrode is not exposed.

[0012] According to one aspect of the present disclosure, an air conditioner is provided having a dust collecting electrode and having improved charging efficiency of aerosol in a charging section.

[0013] The effects according to one aspect of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by a person having ordinary skill in the art to which the present disclosure pertains from the description below.

[0014] Figure 1 is a perspective view of an air conditioner according to one embodiment.

[0015] Figure 2 is an enlarged view of an air conditioner according to one embodiment.

[0016] Figure 3 is a cross-sectional view of an air conditioner according to one embodiment.

[0017] Figure 4 is an enlarged view of an air conditioner according to one embodiment.

[0018] Figure 5 is an exploded perspective view of an air conditioner according to one embodiment.

[0019] Figure 6 is a schematic diagram of an air conditioner according to one embodiment.

[0020] Figure 7 is a schematic diagram of an air conditioner according to one embodiment.

[0021] Figure 8 is a schematic diagram of an air conditioner according to one embodiment.

[0022] Figure 9 is a schematic diagram of an air conditioner according to one embodiment.

[0023] Fig. 10 is a schematic diagram of an air conditioner according to one embodiment.

[0024] Fig. 11 is a schematic diagram of an air conditioner according to one embodiment.

[0025] Figure 12 is a schematic diagram of an air conditioner according to one embodiment.

[0026] Fig. 13 is a schematic diagram of an air conditioner according to one embodiment.

[0027] Fig. 14 is a schematic diagram of an air conditioner according to one embodiment.

[0028] Fig. 15 is a schematic diagram of an air conditioner according to one embodiment.

[0029] Fig. 16 is a schematic diagram of an air conditioner according to one embodiment.

[0030] Fig. 17 is a schematic diagram of an air conditioner according to one embodiment.

[0031] Fig. 18 is a cross-sectional view of an air conditioner according to one embodiment.

[0032] Fig. 19 is an enlarged view of an air conditioner according to one embodiment.

[0033] Fig. 20 is an exploded perspective view of an air conditioner according to one embodiment.

[0034] Fig. 21 is a schematic diagram of an air conditioner according to one embodiment.

[0035] Fig. 22 is a schematic diagram of an air conditioner according to one embodiment.

[0036] The embodiments described in this disclosure and the configurations illustrated in the drawings are merely preferred examples of the disclosure, and there may be various modified examples that can replace the embodiments and drawings of the disclosure at the time of filing of this application.

[0037] Additionally, the same reference numbers or symbols presented in each drawing of the present disclosure represent parts or components that perform substantially the same function.

[0038] In addition, the terminology used in this disclosure is used to describe embodiments and is not intended to limit and / or restrict the disclosure. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this disclosure, terms such as "comprise" or "have" are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the disclosure, but do not preemptively exclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0039] Additionally, in the present disclosure, each of the phrases such as “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B, or C,” “at least one of A, B, and C,” and “at least one of A, B, or C” may include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof.

[0040] Additionally, the term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0041] Additionally, terms including ordinal numbers such as "first," "second," etc., used in this disclosure may be used to describe various components, but the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term "and / or" includes any combination of a plurality of related listed items or any item among a plurality of related listed items.

[0042] Furthermore, the meaning of "identical" in this disclosure includes having similar properties or being similar within a certain range. Furthermore, "identical" means "substantially identical." "Substantially identical" should be understood to include values ​​that fall within the manufacturing error range or values ​​that differ from a reference value within a range that has no significance.

[0043] Additionally, terms such as "~part", "~device", "~block", "~absence", and "~module" may refer to a unit that processes at least one function or operation. For example, the terms may refer to at least one hardware such as an FPGA (field-programmable gate array) / ASIC (application specific integrated circuit), at least one software stored in a memory, or at least one process processed by a processor.

[0044] Meanwhile, the terms “front,” “rear,” “left,” and “right” used in the description below are defined based on the drawing, and the shape and position of each component are not limited by these terms.

[0045] An electrostatic precipitator is a device designed to remove airborne aerosols generated by activities such as smoking, cooking, cleaning, welding, grinding, and operating internal combustion engines within a given space. Electrostatic precipitators can be installed within devices capable of performing air filtering functions, such as air conditioners.

[0046] Furthermore, for convenience of explanation, the present disclosure is illustrated below using an air purifier, a type of air conditioner, as an example. However, the present disclosure is not limited to air purifiers and can be applied to other air conditioners for capturing airborne aerosols. For example, the present disclosure can be applied to air conditioners, which are a type of air conditioner other than air purifiers. Furthermore, the present disclosure can be applied to any home appliance that includes an electrostatic precipitator.

[0047] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the attached drawings.

[0048] Fig. 1 is a perspective view of an air conditioner according to one embodiment. Fig. 2 is an enlarged view of the air conditioner according to one embodiment. Fig. 2 is an enlarged view of area A illustrated in Fig. 1.

[0049] Referring to FIGS. 1 and 2, the air conditioner (1) may include a housing (10). The housing (10) may form the exterior of the air conditioner (1).

[0050] The housing (10) may include an upper panel (15). The upper panel (15) may be provided on the upper end of the housing (10). The upper panel (15) may be positioned above the blower panel (11). A user display may be provided on the upper panel (15). For example, the user display may include a control unit. The user display may receive user input or output operation information of the air conditioner (1) to the user.

[0051] The housing (10) may include a support (16). The support (16) may be positioned at the lowermost side of the housing (10) to support elements constituting the housing (10) and the air conditioner (1).

[0052] The housing (10) may include a blower panel (11). The blower panel (11) may include a first panel (11a), a second panel (11b), a third panel (11c), and a fourth panel (11d). The first panel (11a) may form the front of the air conditioner (1), the second panel (11b) may form the rear of the housing (10), and the third panel (11c) and the fourth panel (11d) may form the sides of the housing (10). The third panel (11c) and the fourth panel (11d) may connect the first panel (11a) and the second panel (11b). The first panel (11a) may be a front panel, the second panel (11b) may be a rear panel, the third panel (11c) may be a left panel, and the fourth panel (11d) may be a right panel. The first panel (11a), the second panel (11b), the third panel (11c), and the fourth panel (11d) may be formed integrally.

[0053] The ventilation panel (11) may include a panel portion (12) and a ventilation opening (13).

[0054] The panel portion (12) may include a plurality of ribs. The plurality of ribs may extend in one direction. For example, the plurality of ribs may extend in an up-down direction. However, the present disclosure is not limited thereto.

[0055] The panel portion (12) can be formed over the entire area of ​​the blower panel (11). The blower panel (11) can be provided without a hole that is separately formed to expose the discharge electrode (61, see FIG. 2) inside the housing (10) to the outside. For example, the panel portion (12) can be provided in a uniform pattern over the entire area of ​​the blower panel (11). This increases the degree of freedom in the design of the blower panel (11), thereby improving aesthetics.

[0056] The air vent (13) may be formed corresponding to the panel portion (12). For example, the air vent (13) may be an opening formed between a plurality of ribs of the panel portion (12). Air outside the housing (10) may be sucked into the housing (10) through the air vent (13) or discharged from the housing (10). The air vent (13) may include a plurality of openings.

[0057] The air conditioner (1) may include a vent (13). For example, a vent panel (11) may be formed with a vent (13) to allow outside air to flow into and exhaust the interior of the air conditioner (1). The vent (13) may extend in a vertical direction. A plurality of vents (13) may be formed. The plurality of vents (13) may be arranged in a direction perpendicular to the vertical direction. For example, the plurality of vents (13) may be arranged in a left-right direction or a front-back direction.

[0058] Air blown through the blower fan (30) can pass through the blower port (13). The blower port (13) can include a first intake port (13a) and an exhaust port (13b). The first intake port (13a) can be located upstream of the exhaust port (13b). The exhaust port (13b) can be located downstream of the first intake port (13a). The air can pass through the housing (10). The air that has flowed into the housing (10) through the first intake port (13a) can pass through the blower fan (30) and flow to the outside of the housing (10) through the exhaust port (13b).

[0059] The first suction port (13a) may be provided below the discharge port (13b). The discharge port (13b) may be provided above the first suction port (13a). However, the positions of the first suction port (13a) and the discharge port (13b) are not limited to the above-described examples.

[0060] The first intake port (13a) and the discharge port (13b) may be formed in the first panel (11a), the second panel (11b), the third panel (11c), and the fourth panel (11d), respectively. For example, the first intake port (13a) and the discharge port (13b) may be formed in the front, rear, left, and right sides of the housing (10).

[0061] For example, air outside the housing (10) can flow into the housing (10) from all directions through the first intake port (13a). For example, air outside the housing (10) can flow into the housing (10) from all directions through the first intake port (13a). In addition, for example, air inside the housing (10) can flow out of the housing (10) in all directions through the exhaust port (13b). For example, air inside the housing (10) can flow out of the housing (10) in all directions through the exhaust port (13b).

[0062] Therefore, since air is sucked in from all directions, air circulation inside the housing (10) is smooth, and the electric dust collector and the air conditioner including the same can achieve high dust collection efficiency.

[0063] Fig. 3 is a cross-sectional view of an air conditioner according to one embodiment. Fig. 4 is an enlarged view of an air conditioner according to one embodiment. Fig. 5 is an exploded perspective view of an air conditioner according to one embodiment.

[0064] Fig. 3 is a cross-sectional view of the air conditioner illustrated in Fig. 1 taken along line B-B'. Fig. 4 is an enlarged view of area C illustrated in Fig. 3.

[0065] Referring to FIGS. 3 to 5, the air conditioner (1) may include a blower fan (30). The blower fan (30) may be positioned downstream of the first intake port (13a) and upstream of the exhaust port (13b). The blower fan (30) may be positioned at the upper portion within the housing (10). The blower fan (30) may rotate to create an air flow flowing within the housing (10).

[0066] Air can pass through the housing (10) along the air flow direction. The air flow direction may be from upstream to downstream of the air path (20). The air flow direction may be a direction in which the air flows into the housing (10) through the first suction port (13a) and the second suction port (14), passes through the electric precipitator (50) and the blower fan (30), and then flows toward the exhaust port (13b). For example, the air flow direction may be a direction in which the air flows into the housing (10) through the first suction port (13a) and the second suction port (14), moves at a predetermined angle, and then passes through the electric precipitator (50) and the blower fan (30). For example, air sucked into the front, rear, left, and right sides of the housing (10) by the blower fan (30) may flow upward and then be discharged again to the front, rear, left, and right sides of the housing (10). However, the direction of air flow is not limited to the above examples.

[0067] The housing (10) may include an air guide (17). Air flowing into the housing (10) through the intake port may be guided toward the blower fan (30) through the air guide (17). The air guide (17) may form a part of a flow path (20) therein. The air guide (17) may guide air inside the housing (10) and / or in the flow path (20) to the blower fan (30). Air passing through the interior of the air guide (17) may flow into the interior of the fan housing (18) and the blower fan (30).

[0068] The housing (10) may include a fan housing (18). A blower fan (30) may be disposed within the fan housing (18). The fan housing (18) may form a portion of a flow path (20) therein. The fan housing (18) may guide the flow of air flowing within the housing (10). The fan housing (18) may be in communication with an air guide (17). The fan housing (18) may be disposed above the air guide (17).

[0069] A blower fan (30) may be placed within a fan housing (18). The fan housing (18) may form a portion of a flow path (20) therein. The fan housing (18) may guide the flow of air flowing within the housing (10). The fan housing (18) may be in communication with an air guide (17).

[0070] The housing (10) may include a fixing member (19). The fixing member (19) may allow the case (100) and the electrostatic precipitator (50) to be fixed within the housing (10). For example, the fixing member (19) may be coupled to the blower panel (11) and the case (100), thereby allowing the case (100) to be fixed within the housing (10). The fixing member (19) may be arranged between the case (100) and the air guide (18). A portion of the flow path (20) may be formed within the fixing member (19).

[0071] The housing (10) may include a case (100). The case (100) may secure an electric precipitator (50) inside the housing (10). The case (100) may be placed on the outside of the electric precipitator (50). A second suction port (14) may be formed in the case (100). The case (100) may be included in the electric precipitator (50).

[0072] A path (20) may be formed within the housing (10). An electric dust collector (50) and a blower fan (30) may be positioned on the path (20). The path (20) may include a first suction port (13a), a second suction port (14), and an exhaust port (13b). Air blown by the blower fan (30) may flow into the path (20). For example, air passing through the first suction port (13a) may flow into the second suction port (14), and air drawn into the path (20) through the second suction port (14) may flow into the exhaust port (13b) after passing through the electric dust collector (50). Air flowing into the exhaust port (13b) may exit from the path (20).

[0073] Air outside the housing (10) can flow into the housing (10) from all directions through the second intake port (14). For example, air outside the housing (10) can flow into the housing (10) from all directions through the second intake port (14). In addition, for example, air inside the housing (10) can flow out of the housing (10) in all directions through the exhaust port (13b). For example, air inside the housing (10) can flow out of the housing (10) in all directions through the exhaust port (13b).

[0074] In one embodiment, the first suction port (13a) and the second suction port (14) are described as separate elements, but the first suction port (13a) and the second suction port (14) may be one element.

[0075] The air conditioner (1) may include an electrostatic precipitator (50). The electrostatic precipitator (50) may be placed inside a housing (10). For example, the electrostatic precipitator (50) may be fixed inside the housing (10) by a case (100). The electrostatic precipitator (50) may capture aerosols in the air and filter the air.

[0076] The electrostatic precipitator (50) may be positioned between the second suction port (14) and the discharge port (13b). For example, the electrostatic precipitator (50) may be positioned downstream of the second suction port (14) and upstream of the discharge port (13b). The electrostatic precipitator (50) may be moved by the blower fan (30) and may filter the air that is drawn into the housing (10) through the first suction port (13a) and the second suction port (14). The filtered air may be discharged to the outside of the housing (10) through the discharge port (13b).

[0077] An electrostatic precipitator (50) may include a charging unit (60) and a dust collecting unit (80). The charging unit (60) may charge an aerosol in the air. The dust collecting unit (80) may capture the aerosol charged by the charging unit (60) and remove it from the air. The charging unit (60) may be positioned upstream of the dust collecting unit (80).

[0078] In addition to the electric precipitator (50), the air conditioner (1) may include various filter devices (not shown). For example, a fine dust collecting filter in the form of a non-woven fabric made of polypropylene resin or polyethylene resin and / or a granular activated carbon filter may be optionally provided.

[0079] The charging unit (60) may include a discharge electrode (61). The discharge electrode (61) may be disposed inside the housing (10). The discharge electrode (61) may generate ions. For example, the discharge electrode (61) may receive a high voltage from the power supply unit (51) to emit electrons, and ions may be generated by corona discharge when the electrons collide with air molecules (see FIGS. 6 and 7). The discharge electrode (61) may receive a voltage to emit electrons, and the emitted electrons may generate negative or positive ions in a relationship with air molecules. For example, a voltage of 2000 V to 20000 V or less may be applied to the discharge electrode (61).

[0080] The discharge electrode (61) may include a plurality of discharge electrodes (61). The plurality of discharge electrodes (61) may be spaced apart from each other. In the drawing, nine discharge electrodes (61) are illustrated as an example, but the number of discharge electrodes (61) is not limited thereto.

[0081] The discharge unit (60) may include a printed circuit board (53). The printed circuit board (53) may be electrically connected to a discharge electrode (61) so that the discharge electrode (61) may emit electrons. The printed circuit board (53) may extend in one direction and be electrically connected to a plurality of discharge electrodes (61). The printed circuit board (53) may include a plurality of printed circuit boards (53). The plurality of printed circuit boards (53) may be spaced apart from each other in a direction different from the direction in which they extend from each other.

[0082] The charging unit (60) may include an electric field induction electrode (71). The electric field induction electrode (71) may induce an electric field with the discharge electrode (61). The electric field induction electrode (71) may be disposed upstream of the discharge electrode (61) with respect to the air flow direction. In addition, the electric field induction electrode (71) may be an upstream electrode (71). The electric field induction electrode (71) may be disposed between the second suction port (14) and the discharge electrode (61). The electric field induction electrode (71) may be disposed closer to the second suction port (14) than to the discharge port (13b).

[0083] At least a portion of the field induction electrode (71) may include a conductive material. At least a portion of the field induction electrode (71) may include a metal. At least a portion of the field induction electrode (71) may include a metal or a conductive material exhibiting electrical characteristics similar thereto.

[0084] The field induction electrode (71) can be grounded with the ground (52) (see FIGS. 6 and 7). For example, the field induction electrode (71) can maintain a voltage of approximately 0 V. The field induction electrode (71) can maintain a lower potential than the discharge electrode (61). Therefore, a constant potential difference can be formed between the field induction electrode (71) and the discharge electrode (61). An electric field can be formed between the field induction electrode (71) and the discharge electrode (61). High-density ions can be generated between the discharge electrode (61) and the field induction electrode (71).

[0085] The electric field induction electrode (71) may include an electrode portion (72). Part or all of the electrode portion (72) may include a conductive material. Part or all of the electrode portion (72) may include a metal. At least a portion of the electrode portion (72) may include a metal or a conductive material exhibiting electrical characteristics similar thereto.

[0086] The field induction electrode (71) may have a closed loop shape. The field induction electrode (71) may have a polygonal ring shape. The electrode portion (72) may have a polygonal ring shape. The electrode portion (72) may be formed in a closed loop shape to form an opening. Accordingly, the opening may also have a polygonal shape. For example, a discharge electrode (61) may be placed in the opening (75) formed by the field induction electrode (71).

[0087] An electrostatic precipitator (50) may include a dust collecting unit (80). The dust collecting unit (80) may include a first dust collecting electrode (82) and a second dust collecting electrode (83) (see FIG. 4). The first dust collecting electrode (82) and the second dust collecting electrode (83) may be alternately arranged in the front-back direction and / or the left-right direction. However, the present disclosure is not limited thereto. For example, the first dust collecting electrode (82) and the second dust collecting electrode (83) may also be alternately arranged in the vertical direction.

[0088] The dust collecting unit (80) can be electrically connected to the power supply unit (51) (see FIGS. 6 and 7). The first dust collecting electrode (82) can be applied with a high voltage from the power supply unit (51), and the second dust collecting electrode (83) can be grounded. A higher voltage can be applied to the first dust collecting electrode (82) than to the second dust collecting electrode (83), so that the first dust collecting electrode (82) can be formed as a positive (+) electrode, and the second dust collecting electrode (83) can be formed as a negative (-) electrode. An electric field is formed between the first dust collecting electrode (82) and the second dust collecting electrode (83), so that the aerosol charged from the charging unit (60) can be captured by the dust collecting electrodes (82, 83).

[0089] Both sides of the dust collecting electrode (82, 83) may be coated with an insulator.

[0090] The blower panel (11) is positioned upstream of the electrostatic precipitator (50) in the air flow direction, so as to cover the electrostatic precipitator (50) from being exposed to the outside of the housing (10). The panel portion (12) of the blower panel (11) can cover the electrostatic precipitator (50). The panel portion (12) can be positioned upstream of the electrostatic precipitator (50) in the air flow direction.

[0091] The discharge unit (60) may further include a ground electrode (91). The ground electrode (91) may be positioned downstream of the discharge electrode (61) with respect to the air flow direction. The ground electrode (91) may be a downstream electrode (91). The ground electrode (91) may be positioned between the discharge electrode (61) and the dust collector (80). The ground electrode (91) may be positioned adjacent to the dust collector (80).

[0092] The ground electrode (91) can be grounded with the ground (52) (see FIGS. 6 and 7). For example, the ground electrode (91) can maintain a voltage of approximately 0 V. The ground electrode (91) can maintain a lower potential than the discharge electrode (61). Therefore, a constant potential difference can be formed between the ground electrode (91) and the discharge electrode (61). An electric field can be formed between the ground electrode (91) and the discharge electrode (61). High-density ions can be generated between the discharge electrode (61) and the ground electrode (91).

[0093] The ground electrode (91) may have a mesh shape. The ground electrode (91) may have a plate shape. However, the present invention is not limited thereto, and the ground electrode (91) may have the same shape as the electric field induction electrode (71).

[0094] Part or all of the ground electrode (91) may comprise a conductive material. Part or all of the ground electrode (91) may comprise a metal. At least a portion of the ground electrode (91) may comprise a metal or a conductive material exhibiting electrical characteristics similar thereto.

[0095] The electric dust collector (50) may include a case (100). The case (100) may be disposed inside a space formed by a plurality of blower panels (11). The case (100) may accommodate components of the electric dust collector (50). The case (100) may form a receiving space in which components of the electric dust collector (50) are accommodated. Accordingly, the discharge electrode (61), the electric field induction electrode (71), the ground electrode (91), the dust collector (80), etc., included in the electric dust collector (50) are not exposed to the outside of the housing (10), so that the aesthetics of the air conditioner may be improved.

[0096] The case (100) may include a dust collection case (110, 120, 130) and a charging case (140, 150, 160). The dust collection case (110, 120, 130) is configured to accommodate dust collection electrodes (82, 83), and a communication hole (110a, 120a, 130a, 140a, 150a) through which air passing through the charging unit (60) passes may be formed in the dust collection case (110, 120, 130). The charging case (140, 150, 160) is configured to accommodate components for charging, such as an electric field induction electrode (71), a discharge electrode (61), and a second suction port (14) through which air flows into the interior of the electric dust collector (50) may be formed. In the drawing, the dust collection case (110, 120, 130) and the charging case (140, 150, 160) are depicted as separate components, but the dust collection case (110, 120, 130) and the charging case (140, 150, 160) may be formed as one piece.

[0097] The dust collection case (110, 120, 130) may include a plurality of dust collection case parts (110, 120, 130). The plurality of dust collection case parts (110, 120, 130) may include a first dust collection case part (110), a second dust collection case part (120), and a third dust collection case part (130). However, the plurality of dust collection case parts (110, 120, 130) may be formed integrally to form a single case.

[0098] The first dust collecting case part (110) may be placed on top of the dust collecting electrodes (82, 83). The first dust collecting case part (110) may cover at least a portion of the upper and side portions of the dust collecting electrodes (82, 83). The first dust collecting case part (110) may be placed on top of the second dust collecting case part (120) and the third dust collecting case part (130). The first dust collecting case part (110) may be coupled to the third dust collecting case part (130). The first dust collecting case part (110) may include a coupling part (111). The first dust collecting case part (110) and the third dust collecting case part (130) may be hook-coupled. The coupling part (111) of the first dust collecting case part (110) may be hook-coupled to the coupling part (131) of the third dust collecting case part (130). A dust collecting electrode (82, 83) can be accommodated in the space formed by combining the first dust collecting case (110) and the third dust collecting case (130).

[0099] The first dust collecting case (110) may include a first communication hole (110a). The first dust collecting case (110) may be formed with a first communication hole (110a). Air passing through the dust collecting electrodes (82, 83) may flow toward the blower fan (30) through the first communication hole (110a). The first communication hole (110a) may be positioned and arranged upstream of the fan and downstream of the second suction port (14) on the flow path (20).

[0100] The second dust collecting case (120) may be placed below the dust collecting electrodes (82, 83). The second dust collecting case (120) may cover a portion of the front and rear portions of the dust collecting electrodes (82, 83). The second dust collecting case (120) may support the dust collecting electrodes (82, 83). The second dust collecting case (120) may be placed between the first dust collecting case (110) and the third dust collecting case (130). The second dust collecting case (120) may be mounted on the third dust collecting case (130).

[0101] The second dust collecting case (120) may include a second communication hole (120a). The second dust collecting case (120) may be formed with a second communication hole (120a). Air passing through the charging unit (60) may pass through the dust collecting electrodes (82, 83) through the second communication hole (120a). The second communication hole (120a) may be positioned and arranged upstream of the blower fan (30) and downstream of the second suction port (14) on the flow path (20). In addition, the second communication hole (120a) may be positioned and arranged upstream of the first communication hole (110a) on the flow path (20).

[0102] The third dust collecting case (130) may be placed below the dust collecting electrodes (82, 83). The third dust collecting case (130) may cover the front, rear, side, and lower portion of the dust collecting electrodes (82, 83). The third dust collecting case (130) may support the dust collecting electrodes (82, 83). The third dust collecting case (130) may be placed below the first dust collecting case (110) and the second dust collecting case (120).

[0103] The third dust collecting case part (130) can be coupled with the first dust collecting case part (110). The third dust collecting case part (130) can include a coupling part (131). The first dust collecting case part (110) and the third dust collecting case part (130) can be hook-coupled. The coupling part (111) of the first dust collecting case part (110) can be hook-coupled with the coupling part (131) of the third dust collecting case part (130). Dust collecting electrodes (82, 83) can be accommodated in the space formed by coupling the first dust collecting case part (110) and the third dust collecting case part (130).

[0104] The third dust collection case (130) may include an electrode mounting portion (132). A ground electrode may be mounted on the electrode mounting portion (132).

[0105] The third dust collection case (130) may include a third communication hole (130a). The third dust collection case (130) may be formed with a third communication hole (130a). Air passing through the charging unit (60) may pass through the dust collection electrodes (82, 83) through the third communication hole (130a). The third communication hole (130a) may be positioned and arranged upstream of the fan and downstream of the second suction port (14) on the flow path (20). In addition, the third communication hole (130a) may be positioned and arranged upstream of the first communication hole (110a) and the second communication hole (120a) on the flow path (20).

[0106] The charging case (140, 150, 160) may include a plurality of charging case parts (140, 150, 160). The plurality of charging case parts (140, 150, 160) may include a first charging case part (140), a second charging case part (150), and a third charging case part (160). However, the plurality of charging case parts (140, 150, 160) may be formed integrally to form a single case.

[0107] The first charging case (140) can be placed on top of the discharge electrode (61), the printed circuit board (53), and the electric field induction electrode (71). The first charging case (140) can cover the discharge electrode (61) and the printed circuit board (53).

[0108] A printed circuit board (53) can be bonded to the first charging case portion (140). The first charging case portion (140) can be placed on top of the second charging case portion (150) and the third charging case portion (160).

[0109] The first charging case (140) may include a fourth communication hole (140a). The first charging case (140) may be formed with a fourth communication hole (140a). Air passing through the suction ports (13a, 14) may flow to the dust collecting electrodes (82, 83) through the fourth communication hole (140a). The fourth communication hole (140a) may be positioned and arranged upstream of the blower fan (30) and downstream of the second suction port (14) on the flow path (20).

[0110] The second charging case part (150) may be placed below the first charging case part (140). A printed circuit board (53) may be mounted on the second charging case part (150). In addition, a discharge electrode (61) may be inserted into the second charging case part (150). The second charging case part (150) may support the printed circuit board (53) and / or the discharge electrode (61). The second charging case part (150) may be placed between the first charging case part (140) and the third charging case part (160).

[0111] The second charging case part (150) can be coupled with the third charging case part (160). The second charging case part (150) can include a coupling part (151). The second charging case part (150) and the third charging case part (160) can be hook-coupled. The coupling part (151) of the second charging case part (150) can be hook-coupled with the coupling part (161) of the third charging case part (160). An electric field induction electrode (71) can be accommodated in the space formed by coupling the second charging case part (150) and the third charging case part (160).

[0112] The second charging case (150) may include a fifth communication hole (150a). The second charging case (150) may be formed with a fifth communication hole (150a). Air passing through the suction ports (13a, 14) may flow to the dust collecting electrodes (82, 83) through the fifth communication hole (150a). The fifth communication hole (150a) may be positioned and arranged upstream of the blower fan (30) and downstream of the second suction port (14) on the flow path (20). In addition, the fifth communication hole (150a) may be positioned and arranged upstream of the fourth communication hole (140a) on the flow path (20).

[0113] The second charging case (150) may include a substrate mounting portion (152). The substrate mounting portion (152) may be provided in a manner corresponding to the number and shape of printed circuit boards (53). The substrate mounting portion (152) may extend in one direction. The printed circuit board (53) may be mounted on the substrate mounting portion (152), and the discharge electrode (61) may penetrate the substrate mounting portion (152) and protrude toward the third charging case (160).

[0114] An electrode hole (152a) may be formed in the substrate mounting portion (152). A discharge electrode (61) may penetrate the electrode hole (152a). For example, the discharge electrode (61) penetrating the electrode hole (152a) may protrude downward.

[0115] The third charging case (160) may be placed below the second charging case (150). An electric field induction electrode (71) may be mounted on the third charging case (160). The third dust collection case (130) may support the electric field induction electrode (71). The third charging case (160) may be placed below the first charging case (140) and the second charging case (150). The third charging case (160) may be coupled with the second charging case (150).

[0116] The third charging case (160) may include an induction electrode mounting portion (162). The induction electrode mounting portion (162) may be provided to correspond to the shape of the electric field induction electrode (71). The induction electrode mounting portion (162) may include a square shape. The electric field induction electrode (71) may be mounted on the induction electrode mounting portion (162) and may be positioned between the second charging case (150) and the third charging case (160).

[0117] The third case (160) may include a bottom (163). The bottom (163) may prevent air that has entered the inside of the case (140, 150, 160) through the second intake port (14) from escaping downward.

[0118] The second charging case part (150) and the third charging case part (160) may have suction ports formed therein. For example, second suction ports (14) may be formed on the sides of the second charging case part (150) and the third charging case part (160). The second suction ports (14) may be formed on all sides of the second charging case part (150) and on all sides of the third charging case part (160). Accordingly, air may flow into the interior of the charging case parts (140, 150, 160) from all sides.

[0119] Fig. 6 is a schematic diagram of an air conditioner according to one embodiment. Fig. 7 is a schematic diagram of an air conditioner according to one embodiment.

[0120] Fig. 6 illustrates that ions are generated between a discharge electrode (61) and an electric field induction electrode (71), and Fig. 7 illustrates that ions are generated between a discharge electrode (61) and a ground electrode (91).

[0121] Referring to FIGS. 6 and 7, the blower fan (30) can cause air to flow from upstream to downstream.

[0122] The discharge electrode (61) can be positioned to generate ions toward the second suction port (14). The discharge electrode (61) can emit electrons toward the upstream of the air passage (20). The ions generated by the collision of the electrons emitted from the discharge electrode (61) with air molecules can move in a direction opposite to the air flow direction.

[0123] The discharge electrode (61) may include a brush (62). The brush (62) may include a plurality of conductive fibers. The conductive fibers may be formed of, for example, carbon fibers. For example, the discharge electrode (61) may be formed of a material having an electrical conductivity of 10% IACS or more and 110% IACS or less.

[0124] The discharge electrode (61) may have an aspect ratio of 2:1 or more and 100:1 or less. For example, the Z-direction length / Y-direction length of the discharge electrode (61) may be 2 or more and 100 or less.

[0125] One end of the brush (62) can be positioned toward the upstream of the air passage (20). The other end of the brush (62) can be caulked to the caulking portion (63).

[0126] However, the present disclosure is not limited thereto, and the discharge electrode (61) may be made of other materials or have other shapes. The discharge electrode (61) may also be implemented with other structures as long as it can generate ions through corona discharge with air molecules when voltage is applied.

[0127] When voltage is applied to the discharge electrode (61), a corona discharge may occur at the discharge electrode (61). The discharge electrode (61) generates electrons, which can generate ions in a relationship with air molecules.

[0128] For example, when a (-) electrode is applied to the discharge electrode (61) and the discharge electrode (61) generates negative ions, the negative ions can charge the aerosol (40) toward the (-) electrode. When a (+) electrode is applied to the discharge electrode (61) and the discharge electrode (61) generates positive ions, the positive ions can charge the aerosol (40) toward the (+) electrode. In the drawing, the discharge electrode (61) generates negative ions as an example, but the present disclosure is not limited thereto. For example, the discharge electrode (61) may also generate positive ions.

[0129] Since the electric field induction electrode (71) maintains a potential difference with the discharge electrode (61), corona discharge continues to occur at the discharge electrode (61), and ions can continue to be generated.

[0130] By the action between the electric field induction electrode (71) and the discharge electrode (61), electric field charging can occur inside the housing (10). Ions generated at the discharge electrode (61) can charge the aerosol (40) in the air between the discharge electrode (61) and the electric field induction electrode (71).

[0131] For example, electric field charging may occur in the first space (56). The first space (56) may be a space inside the housing (10). The first space (56) may be a space between the discharge electrode (61) and the electric field induction electrode (71). The first space (56) may be a space located upstream of the discharge electrode (61). The first space (56) may be a space located downstream of the electric field induction electrode (71).

[0132] The ions generated by the discharge electrode (61) can charge the aerosol (40) in the air in the first space (56). The charged aerosol (40) in the first space (56) can be captured by the dust collector (80).

[0133] An electric field can be generated by the action between the ground electrode (91) and the discharge electrode (61). The ions generated by the discharge electrode (61) can charge the aerosol (40) in the air between the discharge electrode (61) and the ground electrode (91).

[0134] For example, electric field charging may occur in the second space (57). The second space (57) may be a space between the discharge electrode (61) and the ground electrode (91). The second space (57) may be a space located downstream from the discharge electrode (61). The second space (57) may be a space located upstream from the ground electrode (91).

[0135] The ions generated by the discharge electrode (61) can charge the aerosol (40) in the air in the second space (57). The charged aerosol (40) in the second space (57) can be captured by the dust collector (80).

[0136] The ground electrode (91) can strengthen the electric field downstream of the discharge electrode (61), thereby increasing the efficiency of charging the aerosol (40) in the charging section (60).

[0137] In addition, since ions generated through the discharge electrode (61) can be removed while passing through the ground electrode (91), ion accumulation at the dust collecting electrode (82, 83) can be prevented. Accordingly, the decrease in electric field strength between the discharge electrode (61) and the electric field induction electrode (71) due to ion accumulation at the dust collecting electrode (82, 83) can be minimized.

[0138] Fig. 8 is a schematic diagram of an air conditioner according to one embodiment. Fig. 8 is a schematic diagram of a main unit (60).

[0139] Referring to Fig. 8, a plurality of discharge electrodes (61) may be electrically connected to each of a plurality of printed circuit boards (53). The plurality of printed circuit boards (53) may include a first printed circuit board (53a), a second printed circuit board (53b), and a third printed circuit board (53c).

[0140] Each of the plurality of printed circuit boards (53) may extend in a first direction. The plurality of printed circuit boards (53) may be spaced apart from each other in a second direction different from the first direction. For example, the first printed circuit board (53a), the second printed circuit board (53b), and the third printed circuit board (53c) may each be spaced apart in the second direction.

[0141] A plurality of discharge electrodes (61) may be electrically connected to each of the first printed circuit board (53a), the second printed circuit board (53b), and the third printed circuit board (53c). For example, three discharge electrodes (61) may be electrically connected to each of the first printed circuit board (53a), the second printed circuit board (53b), and the third printed circuit board (53c).

[0142] Referring to Fig. 8(a), a plurality of printed circuit boards (53) can be connected to a power supply unit (51) via external wires (54) and receive power. For example, a first printed circuit board (53a), a second printed circuit board (53b), and a third printed circuit board (53c) can each be connected to a power supply unit (51) via external wires (54) and receive power. The external wires (54) can be wires that separately connect the plurality of printed circuit boards (53).

[0143] Referring to Fig. 8(b), a plurality of printed circuit boards (53) can be connected to a power supply unit (51) through internal wires (55) and supplied with power. For example, a first printed circuit board (53a), a second printed circuit board (53b), and a third printed circuit board (53c) are directly connected to each other through internal wires (55), and at least one of the first printed circuit board (53a), the second printed circuit board (53b), and / or the third printed circuit board (53c) can be connected to the power supply unit (51) and supplied with power. The internal wires (55) can be wires that directly connect the plurality of printed circuit boards (53). Each of the first printed circuit board (53a), the second printed circuit board (53b), and the third printed circuit board (53c) may be a first substrate portion (53a), a second substrate portion (53b), and a third substrate portion (53c).

[0144] Referring to FIG. 8(c), the plurality of printed circuit boards (53) may include a fourth printed circuit board (53d). The fourth printed circuit board (53d) may extend in a second direction to connect at least one of the first printed circuit board (53a), the second printed circuit board (53b), and the third printed circuit board (53c). The fourth printed circuit board (53d) may electrically connect the first printed circuit board (53a), the second printed circuit board (53b), and / or the third printed circuit board (53c). The fourth printed circuit board (53d) may be connected to one end of the first printed circuit board (53a), the second printed circuit board (53b), and the third printed circuit board (53c) in the first direction. The fourth printed circuit board (53d) can be the fourth substrate portion (53d).

[0145] Referring to FIG. 8(d), the plurality of printed circuit boards (53) may include a fourth printed circuit board (53d) and a fifth printed circuit board (53e). The fourth printed circuit board (53d) may extend in a second direction to connect the first printed circuit board (53a) and the second printed circuit board (53b). The fourth printed circuit board (53d) may electrically connect the first printed circuit board (53a) and the second printed circuit board (53b). The fourth printed circuit board (53d) may be connected to one end of the first printed circuit board (53a) and the second printed circuit board (53b) along the first direction. The fifth printed circuit board (53e) may extend in the second direction to connect the second printed circuit board (53b) and the third printed circuit board (53c). The fifth printed circuit board (53e) may electrically connect the second printed circuit board (53b) and the third printed circuit board (53c). The fifth printed circuit board (53e) may be connected to the other ends of the second printed circuit board (53b) and the third printed circuit board (53c) along the first direction. The fifth printed circuit board (53e) may be the fifth substrate portion (53e).

[0146] The electric field induction electrode (71) can be configured to surround a plurality of discharge electrodes (61).

[0147] Fig. 9 is a schematic diagram of an air conditioner according to one embodiment. Fig. 9 is a schematic diagram of a main unit (60).

[0148] Referring to Fig. 9, eight discharge electrodes (61) may be provided. For example, if the air flow rate flowing in the central portion of the filament (20) and / or the housing (10) is not large, the discharge electrodes (61) positioned in the central portion may be omitted. Accordingly, the manufacturing cost of the electrostatic precipitator (50) may be reduced.

[0149] Referring to FIG. 9(a) and FIG. 9(b), a plurality of discharge electrodes (61) may be electrically connected to each of the first printed circuit board (53a), the second printed circuit board (53b), and the third printed circuit board (53c). For example, three discharge electrodes (61) may be electrically connected to each of the first printed circuit board (53a) and the third printed circuit board (53c), and two discharge electrodes (61) may be electrically connected to the second printed circuit board (53b).

[0150] Referring to Fig. 9(c), the first printed circuit board (53a) may include a first substrate portion (53aa) extending in a first direction and a second substrate portion (53ab) extending in a second direction. For example, the second substrate portion (53ab) may extend from one end of the first substrate portion (53aa).

[0151] The second printed circuit board (53b) may include a first substrate portion (53ba) extending in a first direction and a second substrate portion (53bb) extending in a third direction. For example, the second substrate portion (53bb) may extend from one end of the first substrate portion (53ba). The third direction may be a direction opposite to the second direction. The first direction and the second direction may be perpendicular directions, and the first direction may be a direction perpendicular to the third direction.

[0152] For example, four discharge electrodes (61) can be electrically connected to each of the first printed circuit board (53a) and the second printed circuit board (53b).

[0153] Referring to Fig. 9(d), the printed circuit board (53) may include a first substrate portion (53aa), a second substrate portion (53ab), a third substrate portion (53ba), and a fourth substrate portion (53bb). The first substrate portion (53aa), the second substrate portion (53ab), the third substrate portion (53ba), and the fourth substrate portion (53bb) may be connected to each other to form an approximately rectangular shape. Eight discharge electrodes (61) may be electrically connected to the printed circuit board (53).

[0154] The first substrate portion (53aa) can extend in a first direction. The second substrate portion (53ab) can extend in a second direction from one end of the first substrate portion (53aa) along the first direction. The third substrate portion (53ba) is spaced apart from the first substrate portion (53aa) in the second direction and can extend in the first direction from one end of the second substrate portion (53ab) along the second direction. The fourth substrate portion (53bb) is spaced apart from the second substrate portion (53ab) in the first direction and can extend in the second direction and / or the third direction from one end of the first substrate portion (53aa) and the third substrate portion (53ba) along the first direction. The fourth substrate portion (53bb) can connect the first substrate portion (53aa) and the third substrate portion (53ba).

[0155] Fig. 10 is a schematic diagram of an air conditioner according to one embodiment. Fig. 10 is a schematic diagram of a main unit (60).

[0156] Referring to Fig. 10, twelve discharge electrodes (61) may be electrically connected to the printed circuit board (53). For example, referring to Fig. 10(a), six discharge electrodes (61) may be electrically connected to each of the first printed circuit board (53a) and the second printed circuit board (53b). However, the present invention is not limited thereto, and more than twelve discharge electrodes (61) may be electrically connected to the printed circuit board (53), and more than six discharge electrodes (61) may be electrically connected to each of the first printed circuit board (53a) and the second printed circuit board (53b).

[0157] Fig. 11 is a schematic diagram of an air conditioner according to one embodiment. Fig. 11 is a schematic diagram of a main unit (60).

[0158] Referring to Fig. 11, the discharge electrode (61) may be directly connected to a wire without being connected to a printed circuit board (53). For example, if there are nine discharge electrodes (61), nine wires may be provided in the air conditioner (1).

[0159] Fig. 12 is a schematic diagram of an air conditioner according to one embodiment. Fig. 12 is a schematic diagram of a main unit (60).

[0160] Referring to Fig. 12, the field induction electrode (71) may include a first side (71a), a second side (71b) spaced apart from the first side (71a), a third side (71c) connecting the first side (71a) and the second side (71b) between the first side (71a) and the second side (71b), and a fourth side (71d) between the first side (71a) and the second side (71b). The fourth side (71d) may be open. For example, if one side of the intake ports (13a, 14) provided in all directions is closed, the field induction electrode (71) may not be provided on the closed side because there is no inflow of air.

[0161] The plurality of printed circuit boards (53) may include a first printed circuit board (53a), a second printed circuit board (53b), and a third printed circuit board (53c).

[0162] Referring to Fig. 12(a), the first printed circuit board (53a) may be closer to the first side (71a) of the electric field induction electrode (71) than the second printed circuit board (53b) and the third printed circuit board (53c). The first printed circuit board (53a) may extend in the first direction.

[0163] The second printed circuit board (53b) may be spaced apart from the first printed circuit board (53a). The second printed circuit board (53b) may be closer to the second side (71b) of the electric field induction electrode (71) than the first printed circuit board (53a) and the third printed circuit board (53c). The second printed circuit board (53b) may extend in the first direction.

[0164] The third printed circuit board (53c) may be adjacent to the third side (71c) of the electric field induction electrode (71) more than the first printed circuit board (53a) and the second printed circuit board (53b). The third printed circuit board (53c) may extend in a second direction different from the first direction.

[0165] Referring to Fig. 12(b), the first printed circuit board (53a) may include a first substrate portion (53aa) and a second substrate portion (53ab). The first substrate portion (53aa) may extend in a first direction, and the second substrate portion (53ab) may extend in a second direction from one end of the first substrate portion (53aa). The first substrate portion (53aa) may be adjacent to a first side (71a) of the field induction electrode (71), and the second substrate portion (53ab) may be adjacent to a third side (71c) of the field induction electrode (71).

[0166] The second printed circuit board (53b) may be spaced apart from the first printed circuit board (53a). The second printed circuit board (53b) may be closer to the second side (71b) of the electric field induction electrode (71) than the first printed circuit board (53a). The second printed circuit board (53b) may extend in the first direction.

[0167] Referring to Fig. 12(c), the printed circuit board (53) may include a first substrate portion (53aa), a second substrate portion (53ab), and a third substrate portion (53ac). The first substrate portion (53aa) may extend in a first direction. The second substrate portion (53ab) may be spaced apart from the first substrate portion (53aa) in a second direction and may be connected to the third substrate portion (53ac). The third substrate portion (53ac) may extend in the second direction from one end of the first substrate portion (53aa) and one end of the second substrate portion (53ab). The third substrate portion may be disposed between the first substrate portion (53aa) and the second substrate portion (53ab).

[0168] The first substrate portion (53aa) may be adjacent to the first side (71a) of the field induction electrode (71), the second substrate portion (53ab) may be adjacent to the second side (71b) of the field induction electrode (71), and the third substrate portion (53ac) may be adjacent to the third side (71c) of the field induction electrode (71).

[0169] Fig. 13 is a schematic diagram of an air conditioner according to one embodiment. Fig. 13 is a cross-sectional view of an electric field induction electrode (71).

[0170] Referring to Fig. 13, the field induction electrode (71) may have a rod shape. For example, the field induction electrode (71) may have a diameter of between 2 and 7 mm.

[0171] Referring to Fig. 13(a), the electric field induction electrode (71) may include an electrode portion (72) and a hollow portion (72a). The hollow portion (72a) may be formed within the electrode portion (72). By forming the hollow portion (72a) instead of forming the entire electric field induction electrode (71) as the electrode portion (72), material costs can be reduced.

[0172] On the other hand, referring to Fig. 13(b), the electric field induction electrode (71) may not include a hollow portion (72a). Therefore, ion generation can be smoothly induced in relation to the discharge electrode (61).

[0173] Fig. 14 is a schematic diagram of an air conditioner according to one embodiment. Fig. 14 is a schematic diagram of an electric field induction electrode (71).

[0174] Referring to Fig. 14, the field induction electrode (71) may have an approximately square shape. The field induction electrode (71) may include a first side (71a), a second side (71b) opposite to the first side (71a), a third side (71c) connected to one end of each of the first side (71a) and the second side (71b) to connect the first side (71a) and the second side (71b), and a fourth side (71d) connected to the other end of each of the first side (71a) and the second side (71b) to connect the first side (71a) and the second side (71b). The space formed by the first side (71a), the second side (71b), the third side (71c), and the fourth side (71d) may be an opening (75).

[0175] Referring to Fig. 14(a), the electric field induction electrode (71) may include a closed loop shape in which the first side (71a), the second side (71b), the third side (71c), and the fourth side (71d) are all connected.

[0176] Meanwhile, referring to Fig. 14(b), the electric field induction electrode (71) may have an opening (71e) formed on a portion of the fourth side (71d). In the drawing, the opening is formed on the fourth side (71d), but the opening may also be formed on the first side (71a), the second side (71b), or the third side (71c).

[0177] Meanwhile, referring to Fig. 14(c), an opening (71e) can be formed at a portion connecting the second side (71b) and the third side (71c) of the electric field induction electrode (71).

[0178] Accordingly, the material cost for forming the electric field induction electrode (71) can be reduced. For example, it can be formed by bending a metal rod, and if an opening (71e) is formed, the amount of metal rod required is reduced, so that the material cost can be reduced.

[0179] It may include a first side (71a), a second side (71b) spaced apart from the first side (71a), a third side (71c) connecting the first side (71a) and the second side (71b) between the first side (71a) and the second side (71b), and a fourth side (71d) between the first side (71a) and the second side (71b). The fourth side (71d) may be open. For example, if one side of the intake ports (13a, 14) provided in all directions is closed, the electric field induction electrode (71) may not be provided corresponding to the closed side because there is no inflow of air.

[0180] Fig. 15 is a schematic diagram of an air conditioner according to one embodiment. Fig. 15 is a schematic diagram of a main unit (60).

[0181] Referring to Fig. 15, the electric field induction electrode (71) may include a ring shape. For example, the electric field induction electrode (71) may be formed in a ring shape. When viewed from the top of the electric dust collector (50), a plurality of discharge electrodes (61) may be arranged in the opening formed by the electric field induction electrode (71). The plurality of discharge electrodes (61) may be formed to correspond to the shape of the electric field induction electrode (71). Accordingly, the plurality of discharge electrodes (61) may be arranged in a ring shape.

[0182] Fig. 16 is a schematic diagram of an air conditioner according to one embodiment. Fig. 16 is a schematic diagram of a ground electrode (91).

[0183] Referring to FIG. 16, the ground electrode (91) may include various shapes.

[0184] For example, referring to FIG. 16(a), the ground electrode (91) may include a mesh shape. For example, the ground electrode (91) may include a first extension portion (91a) and a second extension portion (91b). The first extension portion (91a) and the second extension portion (91b) may extend in directions intersecting each other. For example, the first extension portion (91a) may extend in a first direction, and the second extension portion (91b) may extend in a second direction intersecting the first direction.

[0185] The first extension portion (91a) can include a plurality of first extension portions (91a), and the second extension portion (91b) can include a plurality of second extension portions (91b), so that the plurality of first extension portions (91a) and the plurality of second extension portions (91b) can form a mesh shape by intersecting with each other.

[0186] Also, for example, referring to FIG. 16(b), the ground electrode (91) may include a plate portion (91c) and a hole (91d). The hole (91d) may be formed by perforating the plate portion (91c). The holes (91d) may be provided in multiple numbers. Air passes through the multiple holes (91d), and ions in the air may attach to the plate portion (91c).

[0187] The plurality of holes (91d) may include various shapes. For example, the plurality of holes (91d) may include polygons and / or circles. For example, the plurality of holes (91d) may include triangles, squares, and / or pentagons.

[0188] Fig. 17 is a schematic diagram of an air conditioner according to one embodiment.

[0189] Referring to FIG. 17, the electrostatic precipitator (50) may include a first ground electrode (91) and a second ground electrode (92).

[0190] The first ground electrode (91) and the second ground electrode (92) can be grounded with the ground (52). For example, the first ground electrode (91) and the second ground electrode (92) can maintain a voltage of approximately 0 V. The first ground electrode (91) and the second ground electrode (92) can maintain a lower potential than the discharge electrode (61).

[0191] The first ground electrode (91) and the second ground electrode (92) may have a mesh shape. In addition, the first ground electrode (91) and the second ground electrode (92) may have a plate shape. However, the shapes of the first ground electrode (91) and the second ground electrode (92) are not limited to the above-described examples.

[0192] Part or all of the first ground electrode (91) and the second ground electrode (92) may include a conductive material. Part or all of the first ground electrode (91) and the second ground electrode (92) may include a metal. At least a part of the first ground electrode (91) and the second ground electrode (92) may include a metal or a conductive material exhibiting electrical characteristics similar thereto.

[0193] The first ground electrode (91) may be placed between the discharge electrode (61) and the dust collecting electrode (82, 83). For example, the first ground electrode (91) may be placed below the dust collecting electrode (82, 83) and above the discharge electrode (61). The first ground electrode (91) may be placed upstream of the dust collecting electrode (82, 83) and downstream of the discharge electrode (61).

[0194] The second ground electrode (92) may be placed between the field induction electrode (71) and the bottom portion (163) of the third charging case portion (160). For example, the second ground electrode (92) may be placed below the field induction electrode (71) and above the bottom portion (163) of the third charging case portion (160). The second ground electrode (92) may be placed upstream of the field induction electrode (71).

[0195] The second ground electrode (92) can strengthen the electric field upstream of the discharge electrode (61), thereby increasing the efficiency of charging the aerosol (40) in the charging section (60).

[0196] In addition, ions generated through the discharge electrode (61) and moved toward the third charging case portion (160) can be removed by the second ground electrode (92), thereby preventing ions from accumulating on the third charging case portion (160). Accordingly, the decrease in electric field strength between the discharge electrode (61) and the electric field induction electrode (71) due to ions accumulating at the second ground electrode (92) can be minimized.

[0197] Additionally, if a second ground electrode (92) exists, the electric field induction electrode (71) may be omitted.

[0198] Fig. 18 is a cross-sectional view of an air conditioner according to one embodiment. Fig. 19 is an enlarged view of an air conditioner according to one embodiment. Fig. 20 is an exploded perspective view of an air conditioner according to one embodiment.

[0199] Fig. 18 is a cross-sectional view of the air conditioner shown in Fig. 1 taken along line B-B'. Fig. 19 is an enlarged view of area D shown in Fig. 18. Fig. 20 is an exploded perspective view of the components of the main body.

[0200] Referring to FIGS. 18 to 20, the electric precipitator (50) may include a discharge electrode (61) and an electric field induction electrode (71).

[0201] The discharge electrodes (61) may be provided in multiple numbers. For example, four discharge electrodes (61) may be electrically connected to each of a plurality of printed circuit boards (53). The four discharge electrodes (61) may be arranged along the Y direction. The plurality of printed circuit boards (53) may be arranged along the X direction. By providing a plurality of discharge electrodes (61), the charging efficiency of the aerosol (40) in the charging unit (60) may be improved.

[0202] The electric field induction electrode (71) may include flat portions (71a, 71b, 71c). The flat portions (71a, 71b, 71c) may include a first side (71a), a second side (71b) spaced apart from the first side (71a), a third side (71c) connecting the first side (71a) and the second side (71b) between the first side (71a) and the second side (71b), and a fourth side (71d) between the first side (71a) and the second side (71b). For example, a portion of the fourth side (71d) may be open. The flat portions (71a, 71b, 71c) may be referred to as horizontal portions (71a, 71b, 71c). The horizontal portion (71a, 71b, 71c) can be placed below the discharge electrode (61).

[0203] The electric field induction electrode (71) may further include a protrusion (73). The protrusion (73) may protrude from the flat portion (71a, 71b, 71c). For example, the protrusion (73) may be bent from the flat portion (71a, 71b, 71c) and extend upward. The protrusion (73) may protrude from the horizontal portion (71a, 71b, 71c) toward the discharge electrode (61).

[0204] The protrusion (73) may include a plurality of protrusions (73). The plurality of protrusions (73) may be spaced apart from each other. For example, the plurality of protrusions (73) may be spaced apart in the X direction. The plurality of protrusions (73) may be provided with an open portion of the fourth side (71d).

[0205] A plurality of protrusions (73) can be arranged between the first side (71a) and the second side (71b) of the flat portions (71a, 71b, 71c). For example, the first side (71a), the plurality of protrusions (73), and the second side (71b) can be arranged along the X direction.

[0206] By providing a plurality of protrusions (73) on the electric field induction electrode (71), the charging efficiency of the aerosol (40) in the charging section (60) can be improved.

[0207] The second charging case (150) can have a printed circuit board (53) mounted thereon. In addition, a discharge electrode (61) can be inserted into the second charging case (150). The second charging case (150) can support the printed circuit board (53) and / or the discharge electrode (61).

[0208] The second charging case (150) may include a substrate mounting portion (152). A printed circuit board (53) may be mounted on the substrate mounting portion (152), and a discharge electrode (61) may protrude through the substrate mounting portion (152) toward the third charging case (160).

[0209] An electrode hole (152a) may be formed in the substrate mounting portion (152). A discharge electrode (61) may penetrate the electrode hole (152a). For example, the discharge electrode (61) penetrating the electrode hole (152a) may protrude downward.

[0210] The second charging case part (150) can be combined with the third charging case part (160). An electric field induction electrode (71) can be accommodated in the space formed by combining the second charging case part (150) and the third charging case part (160).

[0211] The third charging case (160) may be placed below the second charging case (150). An electric field induction electrode (71) may be mounted on the third charging case (160). The third dust collection case (130) may support the electric field induction electrode (71). The third charging case (160) may be placed below the first charging case (140) and the second charging case (150). The third charging case (160) may be coupled with the second charging case (150).

[0212] The third charging case (160) may include an induction electrode mounting portion (162). The induction electrode mounting portion (162) may be provided to correspond to the shape of the electric field induction electrode (71). The induction electrode mounting portion (162) may include a square shape. The electric field induction electrode (71) may be mounted on the induction electrode mounting portion (162) and may be positioned between the second charging case (150) and the third charging case (160).

[0213] The third case (160) may include a bottom (163). The bottom (163) may prevent air that has entered the inside of the case (140, 150, 160) through the second intake port (14) from escaping downward.

[0214] The electrostatic precipitator (50) may include an air guide (170). The air guide (170) may guide air flowing into the housing (10) from the outside of the housing (10). The air guide (170) may evenly distribute air flowing into the charging case (140, 150, 160). For example, the air guide (170) may increase charging efficiency by allowing air flowing into the charging case (140, 150, 160) to flow toward the discharge electrode (61) and the electric field induction electrode (71). As the charging efficiency increases, the dust collection efficiency in the dust collecting unit (80) may also increase.

[0215] The air guide (170) may be formed in the first charge case (140, 150, 160). For example, the air guide (170) may be formed in the second charge case (150). The air guide (170) may include a plurality of air guides (170).

[0216] Fig. 21 is a schematic diagram of an air conditioner according to one embodiment. Fig. 22 is a schematic diagram of an air conditioner according to one embodiment.

[0217] Figure 21 illustrates that ions are generated between a discharge electrode (61) and an electric field induction electrode (71), and Figure 22 illustrates that ions are generated between a discharge electrode (61) and a ground electrode (91).

[0218] Referring to FIGS. 21 and 22, the blower fan (30) can cause air to flow from upstream to downstream.

[0219] The discharge electrode (61) can be positioned to generate ions toward the second suction port (14). The discharge electrode (61) can emit electrons toward the upstream of the air passage (20). The ions generated by the collision of the electrons emitted from the discharge electrode (61) with air molecules can move in a direction opposite to the air flow direction.

[0220] When voltage is applied to the discharge electrode (61), a corona discharge may occur at the discharge electrode (61). The discharge electrode (61) generates electrons, which can generate ions in a relationship with air molecules.

[0221] For example, when a (-) electrode is applied to the discharge electrode (61) and the discharge electrode (61) generates negative ions, the negative ions can charge the aerosol (40) toward the (-) electrode. When a (+) electrode is applied to the discharge electrode (61) and the discharge electrode (61) generates positive ions, the positive ions can charge the aerosol (40) toward the (+) electrode. In the drawing, the discharge electrode (61) generates negative ions as an example, but the present disclosure is not limited thereto. For example, the discharge electrode (61) may also generate positive ions.

[0222] Since the electric field induction electrode (71) maintains a potential difference with the discharge electrode (61), corona discharge continues to occur at the discharge electrode (61), and ions can continue to be generated.

[0223] By the action between the electric field induction electrode (71) and the discharge electrode (61), electric field charging can occur inside the housing (10). Ions generated at the discharge electrode (61) can charge the aerosol (40) in the air between the discharge electrode (61) and the electric field induction electrode (71).

[0224] Additionally, electric field charging can occur due to the action between the ground electrode (91) and the discharge electrode (61). Ions generated by the discharge electrode (61) can charge the aerosol (40) in the air between the discharge electrode (61) and the ground electrode (91).

[0225] Ions generated by the discharge electrode (61) can charge aerosol (40) in the air.

[0226] Due to the plurality of discharge electrodes (61) and the plurality of protrusions (73) of the electric field induction electrodes (71), the efficiency of charging the aerosol (40) in the charging section (60) can be increased. For example, air introduced into the housing (10) can be more efficiently charged in the central portion of the housing (10) due to the plurality of discharge electrodes (61) and the plurality of protrusions (73).

[0227] The charged aerosol (40) can be captured by the dust collecting unit (80). Since an electric field is formed between the first dust collecting electrode (82) and the second dust collecting electrode (83), the aerosol (40) charged from the charging unit (60) can be captured by the dust collecting electrodes (82, 83).

[0228] An air conditioner according to one embodiment comprises a blower fan (30) configured to form an air flow, a housing (10) that accommodates the blower fan and includes a first surface (11a), a second surface (11b) opposite the first surface, a third surface (11c) between the first surface and the second surface, and a fourth surface (11d) opposite the third surface between the first surface and the second surface, wherein suction ports (13a, 14) are formed on the first surface, the second surface, the third surface, and the fourth surface, and an electric dust collector (50) accommodated in the housing, wherein the electric dust collector (50) comprises a dust collecting electrode (82, 83) configured to capture an aerosol from air introduced into the housing by the blower fan, and a discharge electrode (82, 83) configured to generate ions toward the suction port and located upstream of the dust collecting electrode. It may include an electrode (61), an electric field induction electrode (71) that is grounded to form an electric field with the discharge electrode and is located upstream of the discharge electrode, and a ground electrode (91) that is located downstream of the discharge electrode and upstream of the dust collecting electrode so that the ions are attached.

[0229] The above ground electrode is a first ground electrode (91), the discharge electrode is disposed above the electric field induction electrode and below the first ground electrode, and the electric dust collector may further include a second ground electrode (92) disposed below the electric field induction electrode.

[0230] At least one of the first ground electrode and the second ground electrode may include a first extension portion (91a) extending in the first direction and a second extension portion (91b) extending to intersect the first extension portion so as to form a mesh shape with the first extension portion.

[0231] At least one of the first ground electrode and the second ground electrode may include a plurality of holes (91d) formed in the plate portion to allow air introduced into the housing by the plate portion (91c) and the blower fan to pass through, and the plurality of holes may include at least one of a polygon and a circle.

[0232] The electric dust collector includes a plurality of discharge electrodes (61) of the discharge electrodes, and includes a plurality of printed circuit boards (53) configured to be electrically connected to the plurality of discharge electrodes, and the plurality of printed circuit boards may further include a first printed circuit board (53a) extending in a first direction and a second printed circuit board (53b) extending in the first direction and spaced apart from the first printed circuit board in a second direction different from the first direction.

[0233] The above plurality of printed circuit boards may further include a third printed circuit board (53d) extending in the second direction to connect the first printed circuit board and the second printed circuit board.

[0234] The third printed circuit board is connected to the first end of the second printed circuit board along the first direction, and the plurality of printed circuit boards may further include a fourth printed circuit board (53e) connected to the second end of the second printed circuit board along the first direction.

[0235] The electric dust collector includes a plurality of discharge electrodes (61) of the discharge electrodes, and includes a plurality of printed circuit boards (53) configured to be electrically connected to the plurality of discharge electrodes, and the plurality of printed circuit boards may include a first printed circuit board (53a) including a first substrate portion (53aa) extending in a first direction and a second substrate portion (53ab) extending from one end of the first substrate portion in a second direction different from the first direction, and a second printed circuit board (53b) including a first substrate portion (53ba) extending in the first direction and a second substrate portion (53bb) extending from one end of the first substrate portion in a third direction opposite to the second direction.

[0236] The electric dust collector includes a plurality of discharge electrodes (61) of the discharge electrodes, and includes a printed circuit board (53) configured to be electrically connected to the plurality of discharge electrodes, and the printed circuit board may include a first substrate portion (53aa) extending in a first direction, a second substrate portion (53ab) spaced apart from the first substrate portion and extending in the first direction, a third substrate portion (53ba) extending in the second direction to connect the first substrate portion and the second substrate portion, and a fourth substrate portion (53bb) spaced apart from the third substrate portion and extending in the second direction to connect the first substrate portion and the second substrate portion.

[0237] The above-mentioned electric field induction electrode may include a horizontal portion (71a, 71b, 71c) positioned below the discharge electrode; and a protrusion (73) protruding from the horizontal portion toward the discharge electrode.

[0238] The electric dust collector includes a plurality of discharge electrodes of the discharge electrode, and the electric field induction electrode is configured to surround the plurality of discharge electrodes, and includes a first side (71a), a second side (71b) spaced apart from the first side, a third side (71c) connecting the first side and the second side between the first side and the second side, and a fourth side (71d) open between the first side and the second side, and the electric dust collector includes a plurality of printed circuit boards (53) configured to be electrically connected to the plurality of discharge electrodes, and the plurality of printed circuit boards include a first printed circuit board (53a) adjacent to the first side of the electric field induction electrode and extending in a first direction, a second printed circuit board (53b) spaced apart from the first printed circuit board and extending in the first direction so as to be adjacent to the second side of the electric field induction electrode, and a third side of the electric field induction electrode and It may include a third printed circuit board (53c) that is adjacent and extends in a second direction different from the first direction.

[0239] The above-mentioned electric field induction electrode may include a ring shape.

[0240] An air conditioner according to one embodiment may include a housing (10), a blower fan (30) disposed within the housing and configured to form an air flow, and an electrostatic precipitator (50) accommodated in the housing, wherein the electrostatic precipitator may include a collecting electrode (82, 83) configured to capture an aerosol from air introduced into the housing by the blower fan, a discharge electrode (61) configured to generate ions and positioned below the collecting electrode, a first ground electrode (71) grounded to form an electric field with the discharge electrode and positioned below the discharge electrode, and a second ground electrode (91) positioned above the discharge electrode and below the collecting electrode so that the ions are attached.

[0241] The discharge electrode is disposed above the first ground electrode and below the second ground electrode, and the electrostatic precipitator may further include a third ground electrode (92) disposed below the first ground electrode.

[0242] At least one of the second ground electrode and the third ground electrode may include a first extension portion (91a) extending in the first direction and a second extension portion (91b) extending to intersect the first extension portion so as to form a mesh shape with the first extension portion.

[0243] The electric dust collector includes a plurality of discharge electrodes of the discharge electrodes, and includes a plurality of printed circuit boards (53) configured to be electrically connected to the plurality of discharge electrodes, and the plurality of printed circuit boards may further include a first printed circuit board (53a) extending in a first direction and a second printed circuit board (53b) extending in the first direction and spaced apart from the first printed circuit board in a second direction different from the first direction.

[0244] The above plurality of printed circuit boards may further include a third printed circuit board (53c) extending in the second direction to connect the first printed circuit board and the second printed circuit board.

[0245] The third printed circuit board is connected to the first end of the second printed circuit board along the first direction, and the plurality of printed circuit boards may further include a fourth printed circuit board (53d) connected to the second end of the second printed circuit board along the first direction.

[0246] In one embodiment, an air conditioner comprises a blower fan (30), a housing (10) that accommodates the blower fan and includes a first side (11a), a second side (11b) opposite the first side, a third side (11c) between the first side and the second side, and a fourth side (11d) opposite the third side between the first side and the second side, wherein the housing (10) has suction ports (13a, 14) formed on the first side, the second side, the third side, and the fourth side, and an electric dust collector (50) accommodated in the housing, wherein the electric dust collector comprises a dust collecting electrode (82, 83) configured to capture an aerosol from air introduced into the housing by the blower fan, a discharge electrode (61) configured to generate ions toward the suction port and positioned below the dust collecting electrode, and a discharge electrode configured to form an electric field with the discharge electrode. It may include a grounded field induction electrode (71) positioned below the discharge electrode and a ground electrode (91) positioned above the discharge electrode and below the dust collecting electrode.

[0247] The above ground electrode is a first ground electrode, the discharge electrode is disposed above the electric field induction electrode and below the first ground electrode, and the electric dust collector may further include a second ground electrode (92) disposed below the electric field induction electrode.

[0248] The above has illustrated and described specific embodiments. However, the present invention is not limited to the above-described embodiments, and those skilled in the art will appreciate that various modifications and implementations can be made without departing from the spirit and scope of the technical ideas of the present invention as set forth in the claims below.

Claims

1. A blower fan configured to form air flow; A housing that accommodates the blower fan and includes a first surface, a second surface opposite the first surface, a third surface between the first surface and the second surface, and a fourth surface opposite the third surface between the first surface and the second surface, wherein suction ports are formed on the first surface, the second surface, the third surface, and the fourth surface; and An electric dust collector is included which is accommodated in the housing; The above electric precipitator, A dust collecting electrode configured to capture aerosol from air introduced into the housing by the blower fan; A discharge electrode configured to generate ions toward the suction port and positioned upstream of the dust collecting electrode; An electric field induction electrode which is grounded to form an electric field with the discharge electrode and is located upstream of the discharge electrode; and An air conditioner comprising a ground electrode positioned downstream of the discharge electrode and upstream of the dust collecting electrode so that the ions are attached.

2. In paragraph 1, The above ground electrode is the first ground electrode, The above discharge electrode is placed above the electric field induction electrode and below the first ground electrode, The above electric precipitator, An air conditioner further comprising a second ground electrode disposed below the above-described electric field induction electrode.

3. In paragraph 2, At least one of the first ground electrode and the second ground electrode, a first extension extending in the first direction; and An air conditioner comprising a second extension portion extending intersectingly with the first extension portion to form a mesh shape.

4. In paragraph 2, At least one of the first ground electrode and the second ground electrode, plate section; and It includes a plurality of holes formed in the plate portion to allow air introduced into the housing by the blower fan to pass through; An air conditioner wherein the plurality of holes include at least one of a polygon and a circle.

5. In paragraph 2, Containing a plurality of discharge electrodes of the above discharge electrodes, The above-mentioned electric precipitator comprises a plurality of printed circuit boards configured to be electrically connected to the plurality of discharge electrodes; The above multiple printed circuit boards, A first printed circuit board extending in a first direction; and An air conditioner further comprising a second printed circuit board extending in the first direction and spaced apart from the first printed circuit board in a second direction different from the first direction.

6. In paragraph 5, The above multiple printed circuit boards, An air conditioner further comprising a third printed circuit board extending in the second direction to connect the first printed circuit board and the second printed circuit board.

7. In paragraph 6, The third printed circuit board is connected to the first end of the second printed circuit board along the first direction, The above multiple printed circuit boards, An air conditioner further comprising a fourth printed circuit board connected to the second end of the second printed circuit board along the first direction.

8. In paragraph 2, Containing a plurality of discharge electrodes of the above discharge electrodes, The above-mentioned electric precipitator comprises a plurality of printed circuit boards configured to be electrically connected to the plurality of discharge electrodes; The above multiple printed circuit boards, A first printed circuit board including a first substrate portion extending in a first direction and a second substrate portion extending in a second direction different from the first direction from one end of the first substrate portion; and An air conditioner comprising a second printed circuit board including a first substrate portion extending in the first direction, and a second substrate portion extending in a third direction opposite to the second direction from one end of the first substrate portion.

9. In paragraph 2, Containing a plurality of discharge electrodes of the above discharge electrodes, The above electric precipitator, A printed circuit board configured to be electrically connected to the plurality of discharge electrodes; The above printed circuit board, A first substrate portion extending in the first direction; A second substrate portion spaced apart from the first substrate portion and extending in the first direction; A third substrate portion extending in a second direction to connect the first substrate portion and the second substrate portion; and An air conditioner including a fourth substrate portion that is spaced apart from the third substrate portion and extends in the second direction to connect the first substrate portion and the second substrate portion.

10. In paragraph 1, The above field induction electrode is, A horizontal portion positioned below the discharge electrode; and An air conditioner including a protrusion protruding from the horizontal portion toward the discharge electrode.

11. In paragraph 1, Containing a plurality of discharge electrodes of the above discharge electrodes, The above-mentioned electric field induction electrode is configured to surround the plurality of discharge electrodes, and includes a first side, a second side spaced from the first side, a third side connecting the first side and the second side between the first side and the second side, and a fourth side open between the first side and the second side. The above-mentioned electric precipitator comprises a plurality of printed circuit boards configured to be electrically connected to the plurality of discharge electrodes; The above multiple printed circuit boards, A first printed circuit board adjacent to the first side of the above-described electric field induction electrode and extending in a first direction; A second printed circuit board spaced apart from the first printed circuit board so as to be adjacent to the second side of the electric field induction electrode and extending in the first direction; and An air conditioner including a third printed circuit board adjacent to the third side of the electric field induction electrode and extending in a second direction different from the first direction.

12. In paragraph 1, The above-mentioned field induction electrode is an air conditioner including an annular shape.

13. Housing; A blower fan disposed within the housing and configured to form air flow; An electric dust collector is included which is accommodated in the housing; The above electric precipitator, A dust collecting electrode configured to capture aerosol from air introduced into the housing by the blower fan; A discharge electrode configured to generate ions and positioned below the dust collecting electrode; A first ground electrode which is grounded to form an electric field with the discharge electrode and is positioned below the discharge electrode; and An air conditioner comprising a second grounding electrode positioned above the discharge electrode and below the dust collecting electrode so that the ions are attached.

14. In paragraph 13, The above discharge electrode is placed above the first ground electrode and below the second ground electrode, The above electric precipitator, An air conditioner further comprising a third ground electrode disposed below the first ground electrode.

15. In paragraph 14, At least one of the second ground electrode and the third ground electrode, a first extension extending in the first direction; and An air conditioner comprising a second extension portion extending intersectingly with the first extension portion to form a mesh shape.

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