Water-based air purifier having compact air intake downward guide structure

Abstract

To provide a water-based air purifier having a sufficient intake performance.SOLUTION: A water-based air purifier may comprise: an intake / exhaust module comprising an intake device comprising a fan which generates a downward air flow during a rotation; a water tank module which is disposed below the intake / exhaust module, and which comprises a water tank for containing a liquid; and a driving module coupled to the lower portion of the water tank module and configured to rotate the liquid filling the water tank. The intake / exhaust module may comprise: an intake space disposed between the intake device and the water tank module and configured to guide air supplied downward into the water tank; and a guide configured to guide air inside the water tank to outside air and configured to define an exhaust space extending in a first direction perpendicular to the vertical direction. The intake space and the exhaust space may be disposed to overlap each other when viewed in a second direction perpendicular to the vertical direction and the first direction.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to an aqueous air purifier, and more particularly to an aqueous air purifier with a compact type air intake lower guide structure. [Background technology]

[0002] As industry develops, the amount of fine dust in the air is increasing due to air pollution such as industrial dust, automobile fumes, and yellow sand. The number of days when the amount of fine dust exceeds the recommended standard is increasing, resulting in restrictions on daily life as well as outdoor activities. When exposed to fine dust for long periods of time, heavy metals contained in the fine dust are inhaled into the human body, causing adverse effects on health. In addition, when ventilating the home to expel dust and carbon dioxide dispersed during indoor activities, fine dust from the outside air is inhaled, lowering the quality of the indoor air, which can have even greater adverse effects on the health of young children and bronchial patients.

[0003] Various types of air purifiers that collect harmful substances such as dust generated indoors or fine dust drawn in from the outside, purify polluted indoor air, and discharge purified air have been developed and are commercially available. Among the various types of air purifiers, dry air purifiers are configured to purify and discharge fine dust using a filter for physically filtering fine dust or a dust collecting plate for electrically collecting fine dust, or using both.

[0004] However, in the case of dry-type air purifiers, if pollutants accumulate on the filter or dust collecting plate to a certain extent, the performance of the filter or dust collecting plate will decrease, so the filter or dust collecting plate must be replaced or cleaned at appropriate times. In addition, if the filter or dust collecting plate needs to be replaced periodically, additional costs will be incurred for the replacement of the filter or dust collecting plate.

[0005] In order to solve the problems of the dry air purifier, water-based air purifiers have been introduced. Water-based air purifiers include a tank containing water, and draw in outside air, rub the air against the surface of the water, dissolve contaminants in the air in the water, and then discharge the air from which the contaminants have been removed. In water-based air purifiers, the performance of drawing in air is important to improve the air purification performance. Conventional water-based air purifiers have been provided in a manner of drawing in air from the side. That is, in conventional water-based air purifiers, the rotation axis of the intake fan is oriented horizontally. When an intake fan is provided in a manner of drawing in air from the side, the size of the intake fan is small compared to the size of the product, and therefore there is a limit to improving the intake performance, and there is also a disadvantage in the external design. Summary of the Invention [Problem to be solved by the invention]

[0006] The embodiments of the present disclosure address the problems of conventional aqueous air purifiers. Specifically, the present disclosure aims to provide an aqueous air purifier that has sufficient intake performance compared to the size of the product by providing an efficient and compact intake guide structure. [Means for solving the problem]

[0007] According to one embodiment, an aqueous air purifier with a compact intake downward guide structure includes an intake and exhaust module including an intake device including a fan that rotates around a vertical central axis and generates a downward air flow when rotating; an aquarium module disposed below the intake and exhaust module and including a water tank for containing liquid; and a driving module coupled to a lower part of the aquarium module and configured to rotate the liquid filled in the water tank, wherein the intake and exhaust module includes a guide disposed between the intake device and the aquarium module, an intake space configured to guide air supplied downward through the intake and exhaust module into the water tank, and an exhaust space configured to guide air inside the water tank to outside air and extending in a first direction perpendicular to the vertical direction, and the intake space and the exhaust space may be arranged to overlap each other when viewed in a second direction perpendicular to the vertical direction and the first direction.

[0008] In an embodiment, the guide may include a pipe extending in the vertical direction, with an upper end connected to the exhaust space and a lower end connected to the water tank.

[0009] In an embodiment, a width in the second direction of a lowermost end of the exhaust space may be greater than or equal to a width in the second direction of an inner circumferential surface of the pipe.

[0010] In one embodiment, the pipe may extend downwardly in the exhaust space.

[0011] In one embodiment, the guide may include a blade extending around the outer periphery of the pipe away from the central axis.

[0012] In one embodiment, the blades may extend downwardly along the outer periphery of the pipe in a counterclockwise or clockwise rotating manner.

[0013] In one embodiment, the intake and exhaust module further includes an upper housing surrounding at least the guide, and the upper housing may include a window that partially defines the intake space and communicates the exhaust space with outside air.

[0014] In one embodiment, a cross-sectional area of ​​the intake space taken along a plane perpendicular to the up-down direction may decrease toward the bottom.

[0015] In an embodiment, a cross-sectional area of ​​the exhaust space taken along a plane perpendicular to the vertical direction may increase toward the lower side.

[0016] In one embodiment, the guide includes a partition wall that defines the exhaust space, and the intake space may include a first intake space and a second intake space that are spatially separated from each other by the partition wall.

[0017] In one embodiment, the partition includes a first partition extending in the first direction and a second partition spaced apart from the first partition in the second direction and extending parallel to the first partition, and at least a portion of the exhaust space may be defined as a space between the first partition and the second partition.

[0018] In an embodiment, a distance between the first and second partition walls in the second direction may be greater in a downward direction.

[0019] In one embodiment, the guide includes a pair of openings that are open upward and have bases adjacent to each other bounded by the upper end of the partition, and the first intake space and the second intake space may extend from each of the pair of openings.

[0020] In one embodiment, the aquarium module includes a first rotating member arranged in the aquarium to be rotatable around the central axis, including at least one wing extending radially from a center portion, and having a first magnetic member coupled thereto, and the drive module includes a second rotating member arranged opposite the first rotating member and having a second magnetic member coupled thereto, and a motor configured to rotate the second rotating member around the central axis, and when the second rotating member rotates, the first rotating member can rotate due to a magnetic force generated between the first magnetic member and the second magnetic member.

[0021] In one embodiment, the intake and exhaust module and the aquarium module may be detachably coupled to each other. Effect of the Invention

[0022] According to the embodiments of the present disclosure, an aqueous air purifier having sufficient air intake performance can be provided in a compact size.

[0023] According to the embodiment of the present disclosure, it is possible to provide a compact air purifier by efficiently arranging the intake space and the exhaust space while easily inducing filtering of pollutants in the air by water. Furthermore, it is possible to provide an air purifier having an excellent appearance and a structure that prevents water from leaking out of the tank even when the air purifier is placed in a shaking place such as a car. [Brief description of the drawings]

[0024] [Figure 1] FIG. 1 is a perspective view of an air purifier according to an embodiment. [Diagram 2] FIG. 2 is an internal perspective view of the air purifier of FIG. [Diagram 3] FIG. 3 is an exploded perspective view of the air purifier of FIG. [Figure 4] FIG. 4 is a cross-sectional view of the air purifier of FIG. 1 taken along line II'. [Diagram 5] FIG. 5 is a cross-sectional view of the air purifier of FIG. 1 taken along line II-II'. [Figure 6] FIG. 6 shows the guide viewed in a first direction. [Figure 7] Figure 7 shows the guide from below. [Figure 8] 8 is a cross-sectional view of the air purifier of FIG. 1 taken along the line P1-P1' of FIG. [Figure 9] 9 is a cross-sectional view of the air purifier of FIG. 1 taken along the line P2-P2' of FIG. [Figure 10] 10 is a cross-sectional view of the air purifier of FIG. 1 taken along the line P3-P3' of FIG. [Figure 11] 11 is a cross-sectional view of the air purifier of FIG. 1 taken along line P4-P4' of FIG. [Figure 12] 12 is a cross-sectional view of the air purifier of FIG. 1 taken along line P5-P5' of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] The embodiments of the present disclosure are illustrated for the purpose of explaining the technical idea of ​​the present disclosure, and the scope of the rights of the present disclosure is not limited to the embodiments presented below or the specific descriptions of these embodiments.

[0026] All technical and scientific terms used in this disclosure have the meanings commonly understood by those of ordinary skill in the art to which this disclosure belongs, unless otherwise defined. All terms used in this disclosure are selected for the purpose of more clearly describing this disclosure, and are not selected to limit the scope of the rights of this disclosure.

[0027] As used in this disclosure, terms such as "including," "comprising," "having," and the like, should be understood as open-ended terms that include the possibility of including other embodiments, unless otherwise stated in the phrase or sentence in which the term appears.

[0028] Unless otherwise specified, singular expressions described in this disclosure may include plural meanings, and this also applies to singular expressions described in the claims.

[0029] The terms "first", "second", etc. used in this disclosure are used to distinguish multiple components from each other, and do not limit the order or importance of the components.

[0030] In this disclosure, when a component is referred to as being "coupled" or "connected" to another component, it should be understood that the component may be directly coupled or connected to the other component, or may be coupled or connected through an intermediary of another component.

[0031] Directional terms such as "lower" and "bottom" used in the present disclosure refer to the direction in which gravity acts when the air purifier is normally placed in the accompanying drawings, and directional terms such as "upper" and "top" refer to the opposite direction.

[0032] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In the accompanying drawings, identical or corresponding components are given the same reference numerals. In addition, in the following description of the embodiments, duplicated descriptions of identical or corresponding components may be omitted. However, even if descriptions of components are omitted, it is not intended that such components are not included in a certain embodiment.

[0033] FIG. 1 is a perspective view of an aqueous air purifier (1) having a compact-type air intake lower guide structure according to one embodiment. FIG. 2 is an internal perspective view of the air purifier (1) of FIG. 1. FIG. 3 is an exploded perspective view of the air purifier (1) of FIG. 1. FIG. 4 is a cross-sectional view of the air purifier (1) of FIG. 1 taken along line I-I'. FIG. 5 is a cross-sectional view of the air purifier (1) of FIG. 1 taken along line II-II'. The following description will be given with reference to FIGS. 1 to 5.

[0034] An aqueous air purifier (1) with a compact-type intake lower guide structure according to an embodiment includes an intake / exhaust module (10), an aquarium module (30), and a drive module (50). At least two of the intake / exhaust module (10), the aquarium module (30), and the drive module (50) may be detachably connected to each other. For example, the intake / exhaust module (10) and the aquarium module (30) may be detachably connected to each other. This allows a user to easily empty or fill the water in the aquarium module (30). As another example, the aquarium module (30) and the drive module (50) may be detachably connected to each other.

[0035] The intake and exhaust module (10) includes an intake device (12) and a guide (13) configured to draw outside air into the water tank (31). With reference to Figures 4 and 5, the intake device (12) may include a fan (121) including a plurality of blades and a motor that rotates the fan (121). The fan (121) rotates about a central axis (O) in the up-down direction (UD) and generates a downward air flow as it rotates.

[0036] The guide (13) is disposed between the intake device (12) and the water tank module (30). The guide (13) guides (13) the air supplied to the lower side by the intake device (12) into the water tank (31) of the water tank module (30) and guides (13) the air inside the water tank (31) to the outside air.

[0037] The intake and exhaust module 10 may include an upper housing 11 that surrounds a guide 13. The upper housing 11 may surround the intake device 12 and the guide 13.

[0038] The water bath module (30) includes a water bath (31) in which a liquid such as water can be contained. The water bath module (30) may include a first rotating member (32) disposed inside the water bath (31) to be rotatable about a central axis (O). The first rotating member (32) is configured to rotate the liquid filled inside the water bath (31) when rotating. The first rotating member (32) may include at least one blade (34) extending radially from a central portion. The blade (34) protrudes upward from an upper surface of the first rotating member (32) by a predetermined height, and as the first rotating member (32) rotates, it pushes the liquid in the water bath (31) in a circumferential direction, and this action causes the liquid to rotate inside the water bath (31) about the central axis (O).

[0039] At least one first magnetic member (33) may be coupled to the first rotating member (32). The first magnetic member (33) is made of a magnetic material. The first magnetic member (33) may be disposed at a plurality of positions on the first rotating member (32). For example, a plurality of first magnetic members (33) may be arranged in the circumferential direction on the first rotating member (32).

[0040] The drive module (50) may include a lower housing (51), a second rotating member (52) disposed inside the lower housing (51), and a motor (54) configured to rotate the second rotating member (52). The second rotating member (52) is disposed rotatably about a central axis (O). The second rotating member (52) is disposed opposite the first rotating member (32). The second rotating member (52) is coupled to the motor (54) and may rotate about the central axis (O). The motor (54) may be coupled to a support (55). Referring to FIG. 3, the lower housing (51) may include a lower plate (56) that defines the bottom of the air purifier (1). The support (55) may be coupled to the lower plate (56).

[0041] At least one second magnetic member (53) may be coupled to the second rotating member (52). The second magnetic member (53) is made of a magnetic material. The second magnetic member (53) may be disposed at a plurality of positions on the second rotating member (52). For example, a plurality of second magnetic members (53) may be arranged in the circumferential direction on the second rotating member (52).

[0042] The first rotating member (32) is disposed inside the water tank (31), and the second rotating member (52) is disposed outside the water tank (31). Specifically, the second rotating member (52) is disposed on the bottom of the water tank (31), and the second rotating member (52) is disposed at the bottom of the water tank (31). As described above, the first rotating member (32) and the second rotating member (52) are separated in the up-down direction (UD), and there is no mechanical element that transmits power between them, but the first rotating member (32) can rotate together with the second rotating member (52) due to the magnetic force between the first magnetic member (33) and the second magnetic member (53). When the second rotating member (52) is rotated by the motor (54), the magnetic force acting between the second magnetic member (53) coupled to the second rotating member (52) and the first magnetic member (33) coupled to the first rotating member (32) rotates the first rotating member (32). In the air purifier (1) of the present disclosure, power is transmitted between the first rotating member (32) and the second rotating member (52) by magnetic force between magnetic members, rather than by mechanical elements. Therefore, the air purifier (1) of the present disclosure can easily ensure airtightness of the water tub (31) compared to a case in which the power of the motor (54) is mechanically transmitted to the first rotating member (32) in the water tub (31).

[0043] The size and number of magnetic members (32, 52) may be determined so as to rotate the water in the water tank (31) with sufficient strength. For example, if the capacity of the water tank (31) is not large and the water in the water tank (31) can be rotated with little force or there is no need to rotate the water at a high rotation speed, the magnetic members (32, 52) may be provided in a small size or in a small number. Conversely, if the capacity of the water tank (31) is large and the water in the water tank (31) must be rotated with a relatively large force or there is no need to rotate the water at a high rotation speed, the magnetic members (32, 52) may be provided in a large size or in a large number.

[0044] In one embodiment, a magnetic attraction may occur between the first magnetic member 33 and the second magnetic member 53. For example, the bottom surface of the first magnetic member 33 and the top surface of the second magnetic member 53 may have opposite polarities. In this case, when the first rotating member 32 and the second rotating member 52 rotate together, the first magnetic member 33 and the second magnetic member 53 may face each other in the up-down direction (UD).

[0045] In another embodiment, a magnetic repulsion may occur between the first magnetic member (33) and the second magnetic member (53). For example, the lower surface of the first magnetic member (33) and the upper surface of the second magnetic member (53) may have the same polarity. In this case, the first magnetic member (33) and the second magnetic member (53) may be arranged so as not to face each other in the up-down direction (UD) when the first rotating member (32) and the second rotating member (52) rotate together. When viewed in the up-down direction (UD), the first magnetic member (33) and the second magnetic member (53) may be arranged alternately in the circumferential direction.

[0046] In Figs. 1 to 5, the first rotating member (32) that rotates the water in the water tub (31) is provided in the form of a disk, but this is merely an example and the embodiments of the present disclosure are not limited thereto.

[0047] In other embodiments, the driving force of the motor may be directly transmitted to the first rotating member (32, 35), and the magnetic member (33, 53) may be omitted. For example, the air purifier (1) may include a shaft connecting between the motor and the first rotating member (32, 35).

[0048] Referring to FIG. 2, the guide (13) can define an intake space (S1) and an exhaust space (S2). Air drawn in from the outside through the intake device (12) enters the water tub (31) along the intake flow path (FP1). The intake flow path (FP1) passes through the intake space (S1) of the guide (13). Air inside the water tub (31) is exhausted to the outside along the exhaust flow path (FP2). The exhaust flow path (FP2) passes through the exhaust space (S2) of the guide (13).

[0049] FIG. 6 is a view of the guide (13) seen in the first direction. FIG. 7 is a view of the guide (13) seen from below. FIG. 8 is a cross-sectional view of the air purifier (1) of FIG. 1 taken along the line P1-P1' of FIG. 5. FIG. 9 is a cross-sectional view of the air purifier (1) of FIG. 1 taken along the line P2-P2' of FIG. 5. FIG. 10 is a cross-sectional view of the air purifier (1) of FIG. 1 taken along the line P3-P3' of FIG. 5. FIG. 11 is a cross-sectional view of the air purifier (1) of FIG. 1 taken along the line P4-P4' of FIG. 5. FIG. 12 is a cross-sectional view of the air purifier (1) of FIG. 1 taken along the line P5-P5' of FIG. 5.

[0050] The guide 13 can define an intake space S1 configured to guide 13 the air supplied downward through the intake and exhaust module 10 into the water tank 31, and an exhaust space S2 configured to guide 13 the air inside the water tank 31 to the outside air and extending in a first direction D1 perpendicular to the up-down direction UD. The first direction includes a direction that is approximately perpendicular to the up-down direction.

[0051] The intake space (S1) and the exhaust space (S2) are arranged to overlap each other when viewed in the up-down direction (UD) and in a second direction (D2) perpendicular to the first direction (D1).

[0052] In the present disclosure, the first direction (D1) includes a direction that is generally perpendicular to the up-down direction (UD). The second direction (D2) may be generally perpendicular to the up-down direction (UD). The second direction (D2) may intersect with the first direction (D1) at an angle other than 90°. For convenience of explanation, the present disclosure will be described assuming that the up-down direction (UD), the first direction (D1), and the second direction (D2) are perpendicular to each other, but the embodiments of the present disclosure are not limited thereto.

[0053] The guide (13) may include a partition (14) that defines an exhaust space (S2). The partition (14) may extend in a first direction (D1) and may include an exhaust space (S2) extending in the first direction (D1) therein. One surface of the partition (14) may define the intake space (S1), and another surface of the partition (14) may define the exhaust space (S2). An outer surface (14a) of the partition (14) may define the exhaust space (S2), and an inner surface (14b) of the partition (14) may define the exhaust space (S2).

[0054] The intake space (S1) may include at least two spaces spatially separated from each other by a partition wall (14). For example, the intake space (S1) may include a first intake space (S11) and a second intake space (S12) separated from each other by a partition wall (14). In the drawings of the present disclosure, the intake space (S1) of the air purifier (1) is divided into two intake spaces (S11 and S12), but the embodiment of the present disclosure is not limited thereto, and the intake space (S1) may be one space or may include three or more spaces separated from each other.

[0055] The partition wall (14) may include a first partition wall (141) and a second partition wall (142) extending in a first direction (D1). The second partition wall (142) may be spaced apart from the first partition wall (141) in a second direction (D2) and extend parallel to the first partition wall (141). At least a portion of the exhaust space (S2) may be defined as a space between the first partition wall (141) and the second partition wall (142).

[0056] The first partition wall (141) partially defines a first intake space (S11), and the second partition wall (142) partially defines a second intake space (S12). The first partition wall (141) and the second partition wall (142) are spaced apart from each other in the second direction (D2) to define an exhaust space (S2). The first intake space (S11) and the exhaust space (S2) are adjacent to each other in the second direction (D2) through the first partition wall (141), and the second intake space (S12) and the exhaust space (S2) are adjacent to each other in the second direction (D2) through the second partition wall (142).

[0057] 6, the width of the partition wall 14 in the second direction D2 may be wider as it goes downward. The distance W between the first partition wall 141 and the second partition wall 142 in the second direction D2 may be larger as it goes downward. For example, the partition wall 14 may have an upside-down "V" shape when viewed in the first direction D1.

[0058] Since the separation distance (W) between the first partition wall (141) and the second partition wall (142) in the second direction (D2) increases downward, a cross section of the exhaust space (S2) cut along a plane perpendicular to the first direction (D1) may have a triangular shape. The shape of the outside air opening of the exhaust space (S2) may be triangular. In this disclosure, a triangle may be understood to include not only a triangle according to a strict mathematical definition, but also a shape that becomes wider from the top to the bottom. For example, the shape of the outside air opening of the illustrated exhaust space (S2) may be a triangle with both sides recessed inward.

[0059] Referring to FIG. 8, the guide (13) may be open upward (or toward the intake device (12)) and include a pair of openings (C11, C12) adjacent to each other with the upper end (143) of the partition wall (14) as a boundary. The pair of openings (C11, C12) may be provided in a semicircular shape with their bases facing each other. The semicircle may be defined by a straight base and an arc connecting both ends of the base. The guide (13) includes a circular upper ring (15), and the upper end (143) of the partition wall (14) extends in a first direction (D1) so as to pass through the central axis (O), so that the upper ring (15) and the upper end (143) of the partition wall (14) can define the pair of openings (C11, C12). The first intake space (S11) and the second intake space (S12) may extend from each of the pair of openings (C11, C12).

[0060] 8 to 11, the cross-sectional area (A1, A2, A3, A4) of the intake space (S1) taken on a horizontal plane (a plane perpendicular to the up-down direction (UD)) decreases toward the bottom. As a result, the flow speed of air passing through the intake space (S1) may increase toward the bottom. This is because when a certain amount of air flows through the intake space (S1), the smaller the cross-sectional area through which the air passes, the faster the flow speed.

[0061] 9 and 10, the cross-sectional area (B1, B2) of the exhaust space (S2) taken on a horizontal plane increases toward the bottom. The change in the cross-sectional area of ​​the intake space (S1) and the exhaust space (S2) is at least partially caused by the width of the partition wall (14) in the second direction (D2) increasing toward the bottom. That is, the cross-sectional area of ​​the intake space (S1) may decrease toward the bottom in association with the increase in the cross-sectional area of ​​the exhaust space (S2).

[0062] 8 to 11, the center of the cross-sectional area (A1, A2, A3, A4) of the intake space (S1) may be farther from the central axis (O) as it goes downward. As the exhaust space (S2) becomes wider as it goes downward, the center of the cross-sectional area (A1, A2, A3, A4) of the intake space (S1) becomes farther from the center. As a result, the air passing through the intake space (S1) may be concentrated in the outer periphery (or the area adjacent to the inner periphery (11a) of the upper housing (11)) farther from the central axis (O). The air concentrated in the outer periphery is supplied intensively to the outer periphery of the water tank (31) and comes into contact with the surface of the liquid filled in the water tank (31), then gathers in the center of the water tank (31) and enters the exhaust space (S2) through the pipe (17) formed in the center of the guide (13).

[0063] The guide 13 may include an outer wall 16. Referring to Figures 9 and 10, a surface 16b of the outer wall 16 may partially define the intake space S1. The surface 16b of the outer wall 16 may extend at an angle downward and toward the central axis O. The inclination of the surface 16b of the outer wall 16 may contribute to the cross-sectional area A1, A2, A3, A4 of the intake space S1 decreasing downward.

[0064] 2, the upper housing (11) may include a window (19) that communicates the exhaust space (S2) with outside air. The upper housing (11) may partially define the intake space (S1). That is, the inner peripheral surface (11a) of the upper housing (11) may partially define the intake space (S1). The window (19) may have a shape corresponding to the outside air opening of the exhaust space (S2). For example, the outside air opening of the exhaust space (S2) may have a triangular shape with both sides recessed inward, and the window (19) may also have a triangular shape with both sides recessed inward.

[0065] 4 and 5, the guide 13 may include a pipe 17 extending in a vertical direction UD along a central axis O. The pipe 17 may have an upper end connected to the exhaust space S2 and a lower end connected to the water tank 31. A lower opening 17a of the pipe 17 may be open toward the inside of the water tank 31, and an upper opening 17b of the pipe 17 may be open toward the exhaust space S2. Air inside the water tank 31 enters the exhaust space S2 through the pipe 17 and is then exhausted to the outside air.

[0066] The cross section of the pipe (17) may be circular. Referring to Fig. 5, the size of the pipe (17) may correspond to the width of the lowermost end of the exhaust space (S2) in the second direction (D2). The width of the exhaust space (S2) in the second direction may be greater than or equal to the width of the inner circumferential surface of the pipe (17) in the second direction (D2). For example, the width of the lowermost end of the exhaust space (S2) in the second direction (D2) may be equal to the inner diameter of the pipe (17).

[0067] The pipe 17 may extend downward in the exhaust space S2. The pipe 17 may extend downward in a center portion of the exhaust space S2 in the first direction D1. For example, the exhaust space S2 and the space inside the pipe 17 may have a T-shape.

[0068] Referring to FIG. 7, the guide 13 may include a blade 18 formed on the outer circumferential surface 17c of the pipe 17. The blade 18 may extend from the outer circumferential surface 17c of the pipe 17 in a direction away from the central axis O. The blade 18 may extend to the inner circumferential surface 11a of the upper housing 11. Referring to FIG. 7 and FIG. 11, the blade 18 may extend downward in a manner rotating counterclockwise or clockwise along the outer circumferential surface 17c of the pipe 17. The blade 18 may include a first blade 181 extending from a lower opening C21 of the first air intake space S11 and a second blade 182 extending from a lower opening C22 of the second air intake space S12. The first blade (181) and the second blade (182) may extend downwards in a rotating manner in the same direction (counterclockwise or clockwise) along the outer circumferential surface (17c) of the pipe (17). The blade (18) changes the direction of the air flow descending through the intake space (S1). The air rotates along the outer circumferential surface of the water tank (31) as it passes through the blade (18). As the air rotates, it flows into the water tank (31), which allows the air to come into stronger contact with the surface of the liquid filled in the water tank (31), and pollutants contained in the air can be more easily dissolved in the liquid.

[0069] The intake device (12) of the air purifier (1) of the present disclosure draws air downward toward the water tank (31) disposed below. The intake device (12) has an intake structure in the up-down direction (UD) as described above, thereby improving air intake performance. For example, the central axis (O) of the fan (121) extends in the up-down direction (UD) and the blades of the fan (121) extend in the radial direction. Therefore, even if the size of the fan (121) is increased to improve intake performance, the intake device (12) can be disposed in a relatively compact space. This contributes to reducing the size of the air purifier (1) without reducing the intake performance of the air purifier (1). In addition, the guide (13), which guides the air that has flowed into the air purifier (1) by the intake device (12) into the water tank (31), has a compact volume while providing both the intake space (S1) and the exhaust space (S2), which contributes to the miniaturization of the air purifier (1).

[0070] The air purifier (1) of the present disclosure has a vertical (UD) air intake structure in which the fan (121) is disposed on the upper side of the air purifier (1), and therefore can include a fan (121) that is large in size compared to the size of the air purifier (1), thereby providing improved air suction performance. In addition, since the fan (121) is disposed on the upper side of the air purifier (1), the air purifier (1) of the present disclosure has structural features that are advantageous in terms of external design and facilitates modular design. Furthermore, such structural features are advantageous in configuring the air purifier (1) to prevent water in the water tank (31) from leaking outside the device, even if the air purifier (1) is disposed in a place where it shakes, such as in an automobile.

[0071] Although the technical idea of ​​the present disclosure has been described above by way of some embodiments and examples shown in the accompanying drawings, it should be understood that various substitutions, modifications and changes can be made without departing from the technical idea and scope of the present disclosure that can be understood by a person having ordinary skill in the art to which the present disclosure pertains. In addition, such substitutions, modifications and changes should be considered to fall within the scope of the appended claims. [Explanation of symbols]

[0072] 1: Air purifier 10: Intake and exhaust module 11: Upper housing 12: Intake device 13: Guide 14: Partition 15: Upper ring 16: Outer wall 17: Pipe 18: Blade 30: Aquarium module 31: Aquarium 32: First rotating member 33: First magnetic member 50: Drive module 51: Lower housing 52: Second rotating member 53: Second magnetic member

Claims

1. an intake and exhaust module including an intake device including a fan that rotates about a vertical central axis and generates a downward air flow when rotating; A water tank module including a water tank for containing a liquid, the water tank module being disposed below the intake and exhaust module; and a drive module coupled to a lower portion of the water bath module and configured to rotate a liquid contained in the water bath; the intake and exhaust module is disposed between the intake device and the aquarium module, and includes an intake space configured to guide air supplied to a lower side through the intake and exhaust module into the inside of the aquarium, and a guide configured to guide air inside the aquarium to outside air and to define an exhaust space extending in a first direction perpendicular to the up-down direction; The intake space and the exhaust space are arranged to overlap each other when viewed in a second direction perpendicular to the up-down direction and the first direction. A water-based air purifier with a compact lower air intake guide structure.

2. The guide includes a pipe extending in the vertical direction, the upper end of the pipe being connected to the exhaust space and the lower end of the pipe being connected to the water tank. An aqueous air cleaner comprising the compact air intake lower guide structure according to claim 1.

3. The width of the lowermost end of the exhaust space in the second direction is greater than or equal to the width of the inner circumferential surface of the pipe in the second direction. An aqueous air cleaner comprising the compact air intake lower guide structure according to claim 2.

4. The pipe extends downward in the exhaust space. An aqueous air cleaner comprising the compact air intake lower guide structure according to claim 2.

5. The guide includes a blade extending in a direction away from the central axis on the outer circumferential surface of the pipe. An aqueous air cleaner comprising the compact air intake lower guide structure according to claim 2.

6. The blade extends downward along the outer circumferential surface of the pipe in a counterclockwise or clockwise rotating manner. An aqueous air cleaner comprising the compact air intake lower guide structure according to claim 5.

7. The intake and exhaust module further includes an upper housing surrounding at least the guide; The upper housing includes a window that defines a portion of the intake space and communicates the exhaust space with outside air. An aqueous air cleaner comprising the compact air intake lower guide structure according to claim 1.

8. The area of ​​a cross section of the intake space taken along a plane perpendicular to the up-down direction becomes smaller toward the bottom. An aqueous air cleaner comprising the compact air intake lower guide structure according to claim 1.

9. The area of ​​a cross section of the exhaust space taken along a plane perpendicular to the up-down direction increases toward the bottom. An aqueous air cleaner comprising the compact air intake lower guide structure according to claim 1.

10. The guide includes a partition wall that defines the exhaust space, The intake space includes a first intake space and a second intake space spatially separated from each other by the partition wall. An aqueous air cleaner comprising the compact air intake lower guide structure according to claim 1.

11. The partition wall includes a first partition wall extending in the first direction and a second partition wall spaced apart from the first partition wall in the second direction and extending parallel to the first partition wall, At least a portion of the exhaust space is defined as a space between the first partition wall and the second partition wall. A water-based air cleaner comprising the compact air intake lower guide structure according to claim 10.

12. a distance between the first and second partition walls in the second direction increases toward a lower side; An aqueous air cleaner comprising the compact air intake lower guide structure according to claim 11.

13. the guide includes a pair of openings that are open upward and adjacent to each other with an upper end of the partition wall as a boundary, and the first air intake space and the second air intake space extend from each of the pair of openings. A water-based air cleaner comprising the compact air intake lower guide structure according to claim 10.

14. the aquarium module includes a first rotating member disposed within the aquarium to be rotatable about the central axis, the first rotating member including at least one wing extending radially from a central portion, and a first magnetic member coupled thereto; the drive module includes a second rotating member disposed opposite the first rotating member and having a second magnetic member coupled thereto, and a motor configured to rotate the second rotating member about the central axis; When the second rotating member rotates, the first rotating member rotates due to a magnetic force generated between the first magnetic member and the second magnetic member. An aqueous air cleaner comprising the compact air intake lower guide structure according to claim 1.

15. The intake and exhaust module and the water tank module are detachably coupled to each other. A water-based air cleaner comprising the compact air intake lower guide structure according to claim 14.

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