Air purifier

Abstract

An air purifier according to one embodiment of the present disclosure comprises: a case forming the exterior; a water tank disposed inside the case and forming a space for storing water; and a humidification module disposed below the water tank and generating humidified air with water supplied from the water tank, wherein the case comprises an outer cover in which a first hidden outlet is formed, and an inner cover disposed inside the outer cover and in which a second hidden outlet corresponding to the first hidden outlet is formed, the outer cover includes a plurality of recessed portions spaced apart in a circumferential direction, and the first hidden outlet is formed by some of the plurality of recessed portions being opened.

Description

air purifier

[0001] The present disclosure relates to an air purifier, and more specifically, to an air purifier with improved air purification performance.

[0002] An air purifier is a device that reduces dust, bacteria, and other contaminants in the air of a space by filtering and discharging the air within that space. The air purifier filters out foreign substances through the airflow within the space and discharges the air from which these contaminants have been removed.

[0003] There is a growing demand for air purifiers with higher air purification performance. Additionally, there is increasing customer demand for smaller air purifiers to reduce the volume they occupy indoors and increase the utilization of indoor space.

[0004] The air purifier forms an outlet on the upper side to rapidly increase the cleanliness of the indoor space and can circulate the filtered air discharged from the upper side in all directions.

[0005] In addition, if a discharge port is formed on the upper side, a separate fan for airflow control can be placed on the upper side to send filtered air to a distant location.

[0006] In addition, research is underway on an air purifier configured with multiple layers by stacking blower units vertically.

[0007] Prior art document 1 (Korean Published Patent No. KR10-2022-0083719) and Prior art document 2 (Korean Published Patent No. KR10-2017-0140578) disclose an air purification device that filters a large amount of air by arranging blower devices in an up-and-down direction.

[0008] This air purifier has the advantage of increased airflow capacity and allows air to be drawn in and discharged in a wider variety of directions, making it easy to purify the surrounding air even when the occupant is sitting or standing.

[0009] However, for air purifiers with an outlet formed at the top, as described in prior art, as the volume decreases due to the demand for miniaturization, the area of ​​the top outlet also shrinks and the airflow decreases, making it difficult to secure higher air purification performance.

[0010] To enhance air purification performance, the surface area of ​​the outlet, airflow path, and intake must be increased to generate a larger airflow. When top-discharge air purifiers utilize a slim design to reduce volume and maximize space utilization, the outlet, in particular, inevitably has a limited surface area.

[0011] The present disclosure aims to solve the aforementioned problems and other problems.

[0012] The object of the present disclosure is to provide an air purifier capable of achieving higher air purification performance relative to the same volume.

[0013] The object of the present disclosure is to provide an air purifier capable of effectively forming an upward airflow.

[0014] The object of the present disclosure is to provide an air purifier that generates clean humidified air using heated water.

[0015] The problems of the present disclosure are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0016] An air purifier according to one embodiment of the present disclosure can increase the area of ​​the discharge port by forming a discharge port on the side of the case.

[0017] An air purifier according to one embodiment of the present disclosure can increase the surface area while minimizing the visual exposure of the discharge port by forming a slit-shaped discharge port corresponding to the case structure.

[0018] An air purifier according to one embodiment of the present disclosure comprises an outer cover having an inlet formed on its lower side and a first hidden outlet formed on its upper side above the inlet, and an inner cover disposed on the inner side of the outer cover and having a second hidden outlet formed corresponding to the first hidden outlet.

[0019] An air purifier according to one embodiment of the present disclosure comprises an outer cover having a first hidden outlet formed therein and an inner cover disposed on the inner side of the outer cover having a second hidden outlet formed therein corresponding to the first hidden outlet, wherein the outer cover comprises a plurality of recesses spaced apart in the circumferential direction, and the first hidden outlet is formed by opening a portion of the plurality of recesses.

[0020] An air purifier according to one embodiment of the present disclosure comprises a case forming an exterior, a filter disposed inside the case and filtering incoming air, and a blower fan disposed above the filter, wherein the case comprises an outer cover having an inlet formed on the lower side and a first hidden outlet formed above the inlet, and an inner cover disposed inside the outer cover and having a second hidden outlet formed corresponding to the first hidden outlet.

[0021] An air purifier according to one embodiment of the present disclosure comprises a case forming an exterior, a water tank disposed inside the case and forming a space for storing water, and a humidification module disposed below the water tank and generating humidified air with water supplied from the water tank, wherein the case comprises an outer cover having a first hidden outlet formed therein and an inner cover disposed inside the outer cover having a second hidden outlet formed therein corresponding to the first hidden outlet, wherein the outer cover comprises a plurality of recesses spaced apart in the circumferential direction, and the first hidden outlet is formed by opening a portion of the plurality of recesses.

[0022] The first hidden outlet above may have a vertically elongated stripe shape.

[0023] An air purifier according to one embodiment of the present disclosure may further include a discharge grille disposed on the upper side of the water tank and forming a plurality of outlets.

[0024] The above plurality of outlets may be formed on the upper surface of the case.

[0025] An air purifier according to one embodiment of the present disclosure further comprises a filter disposed inside the case and filtering incoming air, and a blower fan disposed above the filter, and the first hidden outlet may be located above the blower fan.

[0026] An air purifier according to one embodiment of the present disclosure further includes a blower path through which air flowing by the blower fan flows upward, and the humidification module includes a humidification path inlet connected to the blower path, and the first hidden outlet may be located above the humidification path inlet.

[0027] The above-mentioned first hidden outlets may be formed in multiple numbers symmetrically with respect to the above-mentioned humidification inlet.

[0028] The above case includes an inlet formed on the outer side of the filter, and the number of the inlets may be greater than the number of the first hidden outlets.

[0029] The first hidden outlet and the second hidden outlet may overlap at least partially.

[0030] The first hidden outlet can be positioned higher than the second hidden outlet.

[0031] The angle formed between the first line connecting the bottom of the first hidden outlet and the bottom of the second hidden outlet, and the second line extending from the bottom of the first hidden outlet, may be 50 to 80 degrees.

[0032] At least some of the ends of the first hidden outlet and the second hidden outlet may be formed rounded or inclined toward the upper direction.

[0033] An air purifier according to one embodiment of the present disclosure may further include a display disposed on one side of the case.

[0034] The above first hidden outlets may be formed in multiple numbers symmetrically with respect to the display.

[0035] The first hidden outlet can be formed from one side of the display to the other side of the display along the perimeter of the outer cover.

[0036] The length of the first hidden outlet can be formed to be longer than the width of the first hidden outlet.

[0037] The length of the first hidden outlet may be at least 10 times the width of the first hidden outlet.

[0038] The length of the second hidden outlet may be greater than or equal to the length of the first hidden outlet.

[0039] An air purifier according to one embodiment of the present disclosure comprises a case forming an exterior, a water tank disposed inside the case and forming a space for storing water, and a humidification module disposed below the water tank and generating humidified air with water supplied from the water tank, wherein the case comprises an outer cover having an inlet formed on the lower side and a first hidden outlet formed above the inlet, and an inner cover disposed inside the outer cover and having a second hidden outlet formed corresponding to the first hidden outlet.

[0040] The above outer cover includes a plurality of recesses spaced apart in the circumferential direction, and the inlet and the first hidden outlet may be formed by opening some of the plurality of recesses.

[0041] An air purifier according to one embodiment of the present disclosure further includes a discharge grille disposed above the water tank and forming a plurality of outlets, and the plurality of outlets may be formed on the upper surface of the case.

[0042] According to at least one of the embodiments of the present disclosure, the air purification performance of the air purifier can be improved by increasing the area of ​​the discharge port.

[0043] According to at least one of the embodiments of the present disclosure, by forming a lateral discharge port in the case, higher air purification performance can be secured relative to the same volume.

[0044] According to at least one of the embodiments of the present disclosure, by forming a discharge port in the form of a longitudinally elongated slit in the case, the area of ​​the discharge port can be increased without visually exposing the discharge port.

[0045] According to at least one of the embodiments of the present disclosure, an upward airflow can be effectively formed.

[0046] According to at least one of the embodiments of the present disclosure, clean and pleasant humidified air can be provided by generating humidified air using heated water.

[0047] The effects of the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims.

[0048] FIG. 1 is a perspective view of an air purifier according to one embodiment of the present disclosure.

[0049] Figure 2 is a plan view of Figure 1.

[0050] Figure 3 is a cross-sectional view taken along III-III' of Figure 2.

[0051] FIG. 4 is a front view of an air purifier with a hidden outlet applied according to one embodiment of the present disclosure and an enlarged view of the hidden outlet.

[0052] FIG. 5 is a perspective view of an air purifier according to one embodiment of the present disclosure.

[0053] FIG. 6 is an enlarged view of a hidden outlet according to one embodiment of the present disclosure.

[0054] FIG. 7 is a perspective view of an air purifier with an outer cover separated according to one embodiment of the present disclosure.

[0055] FIG. 8 is an enlarged view of a hidden outlet of an inner cover according to one embodiment of the present disclosure.

[0056] FIG. 9 is a side view of an air purifier with an outer cover separated according to one embodiment of the present disclosure.

[0057] Figure 10 is an enlarged view of the hidden outlet of the inner cover.

[0058] FIG. 11 is a rear view of an air purifier with an outer cover separated according to one embodiment of the present disclosure.

[0059] FIG. 12 is a drawing showing the airflow of an air purifier according to one embodiment of the present disclosure.

[0060] FIGS. 13 and FIGS. 14 are drawings referenced in the description of the internal air flow of an air purifier according to one embodiment of the present disclosure.

[0061] FIGS. 15 and FIGS. 16 are cross-sectional views of an air purifier according to one embodiment of the present disclosure.

[0062] FIGS. 17 and FIGS. 18 are drawings referenced in the description of the location of a hidden outlet according to one embodiment of the present disclosure.

[0063] FIG. 19 is a drawing referenced in the description of a hidden outlet according to one embodiment of the present disclosure.

[0064] Figure 20 is a diagram showing the airflow evaluation results according to the discharge port area.

[0065] FIGS. 21 and FIGS. 22 are drawings referenced in the explanation regarding the height difference between the first hidden outlet and the second hidden outlet.

[0066] FIG. 23 is a drawing referenced in the explanation of the results of an air purification performance test according to the placement positions of the first hidden outlet and the second hidden outlet.

[0067] FIG. 24 is a drawing referenced in the description of a hidden outlet according to one embodiment of the present disclosure.

[0068] FIGS. 25 and FIGS. 26 are drawings referenced in the description of a hidden outlet according to an embodiment of the present disclosure.

[0069] FIG. 27 is a drawing illustrating a hidden outlet positioned on the front-side of an air purifier according to one embodiment of the present disclosure.

[0070] FIG. 28 is a drawing illustrating a second hidden outlet positioned on the front-side of an air purifier according to one embodiment of the present disclosure.

[0071] FIG. 29 is a drawing illustrating a hidden outlet positioned on the side-rear of an air purifier according to one embodiment of the present disclosure.

[0072] FIG. 30 is a drawing illustrating a second hidden outlet positioned on the side-rear of an air purifier according to one embodiment of the present disclosure.

[0073] FIGS. 31 and FIGS. 32 are cross-sectional views of an air purifier according to one embodiment of the present disclosure.

[0074] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components are given the same reference number regardless of drawing symbols, and redundant descriptions thereof will be omitted.

[0075] The suffixes “module” and “part” for components used in the following description are assigned or used interchangeably solely for the ease of drafting the specification, and do not inherently possess distinct meanings or roles.

[0076] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0077] When it is stated that one component is “connected” or “connected” to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

[0078] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0079] FIG. 1 is a perspective view of an air purifier according to one embodiment of the present disclosure. With reference to FIG. 1, the external appearance of the air purifier of the present invention will be described.

[0080] The air purifier includes a case (10) that forms an outer shape and has an inlet (24a) formed therein. Additionally, one or more outlets (12a) are formed in the case (10).

[0081] The case (10) can have a cylindrical shape overall.

[0082] An air purifier according to one embodiment of the present disclosure can draw in air through a periphery surface and discharge air through an upper surface.

[0083] An air purifier according to one embodiment of the present disclosure can draw in air through a circumferential surface and discharge air through a circumferential surface.

[0084] An air purifier according to one embodiment of the present disclosure can draw in air through a periphery surface and discharge air through a periphery surface and an upper surface.

[0085] The case (10) may include an intake grille (24) forming an inlet (24a) into which air enters, and a discharge grille (12) forming an outlet (12a) into which air is discharged. The inlet (24a) may be formed on the circumferential surface of the case (10) having a cylindrical shape. Since the intake grille (24) is located at the bottom of the case (10), it may also be referred to as a "bottom grille."

[0086] A plurality of grilles (24b) extending in the vertical direction are arranged in the intake grille (24). The plurality of grilles (24b) may be spaced apart in the circumferential direction of the intake grille (24). A plurality of inlets (24a) may be formed between the plurality of grilles (24b).

[0087] Meanwhile, in this specification, the vertical direction or vertical direction is defined as the axial direction. The axial direction may correspond to the central axis direction of the blower fan (62) described later, that is, the motor axis direction of the fan. Also, the radial direction or horizontal direction may be understood as a direction perpendicular to the axial direction. Furthermore, the circumferential direction may be understood as a virtual circular direction formed when rotating with the axial direction as the center and the radial distance as the radius of rotation.

[0088] The outlet (12a) can be formed on the upper surface of the case (10) having a cylindrical shape.

[0089] In addition, hidden outlets (25a, 21a) (see FIG. 1, FIG. 4, etc.) may be formed on the side of the case (10) having a cylindrical shape. The hidden outlets (25a, 21a) may be formed on the circumferential surface of the case (10) having a cylindrical shape.

[0090] Hidden outlets (25a, 21a) may be formed on the upper part of the case (10). Hidden outlets (25a, 21a) may be located between the inlet (24a) and the outlet (12a).

[0091] Hidden outlets (25a, 21a) may be formed in the upper grill (25). A plurality of grills (25b) extending in the vertical direction are arranged in the upper grill (25). The plurality of grills (25b) may be spaced apart in the circumferential direction of the upper grill (25). A plurality of hidden outlets (25a, 21a) may be formed between the plurality of grills (25b).

[0092] The case (10) may include an outer cover (23) forming a side exterior, and an inner cover (21) (see FIG. 7) disposed on the inner side of the outer cover (23) and coupled with the outer cover (23).

[0093] The outer cover (23) may include an upper grill (25) on the upper side and a lower intake grill (24). The upper grill (25) on the upper side and the lower intake grill (24) on the lower side may be manufactured as a single unit.

[0094] According to an embodiment, the outer cover (23) may include two or more detachable pieces. For example, the outer cover (23) may have a two-piece structure of an upper grill (25) and an intake grill (24). Alternatively, the outer cover (23) may have a three-piece structure of an upper grill (25), an intake grill (24), and a connecting part (not shown) between the upper grill (25) and the intake grill (24).

[0095] A first hidden outlet (25a) is formed in the outer cover (23). A long stripe pattern (23b) and a recess (23a) may be formed in the outer cover (23) in the vertical direction.

[0096] The indentation (23a) is formed by being indented inward relative to the stripe pattern (23b) and can be formed in a stripe shape that is long in the vertical direction.

[0097] The inlet (24a) and the first hidden outlet (25a) may be formed in the recess (23a). The grill (24b, 25b) may be formed in the stripe pattern (23b). For example, the grill (24b, 25b) may be formed on the inner surface of the protruding stripe pattern (23b).

[0098] The air purifier of the present disclosure may be a humidifying air purifier equipped with a humidification function. The air purifier of the present disclosure may generate humidified air by ultrasonic vibration of water. The air purifier of the present disclosure may generate humidified air by heating water. The air purifier of the present disclosure may generate humidified air generated by ultrasonic vibration and humidified air generated by heating.

[0099] The case (10) may include a tank cover (14) positioned on the upper side of the tank (100).

[0100] The air purifier may include a discharge grille (12) forming an outlet (12a) and a water tank cover (14) positioned on the upper side of the water tank (100).

[0101] The discharge grille (12) may have a structure that is separated upward from the outer shell (22) described below. The water tank cover (14) may have a structure that is separated from the discharge grille (12) or the water tank (100).

[0102] The discharge grille (12) may include a plurality of ribs (12b) extending radially from the outer circumference of the water tank cover (14). The plurality of ribs (12b) disposed on the discharge grille (12) may be spaced apart in the circumferential direction from the outer circumference of the water tank cover (14).

[0103] The case (10) may include an outer shell (22) that guides air flowing inside to an outlet (12a).

[0104] The outer shell (22) includes an upper outer shell (22a) positioned below the discharge grille (12) and a lower outer shell (22b) positioned below the upper outer shell (22a). The lower outer shell (22b) may be formed of a transparent material.

[0105] The air purifier may include a base (28) that is positioned on the lower side of the case (10) and separates the case (10) from the ground at a certain distance. The upper part of the base (28) may be connected to the lower part of the case (10).

[0106] FIG. 2 is a plan view of FIG. 1. The upper part of the air purifier will be described below with reference to FIG. 2.

[0107] The water tank cover (14) may include a central cover (16) and a perimeter cover (18) arranged around the central cover (16). The central cover (16) may have a structure that is convex toward the upper side as it moves toward the center. A water supply hole (20) through which water flows into the water tank (100) may be formed between the perimeter cover (18) and the central cover (16).

[0108] A plurality of ribs (12b) and a plurality of outlets (12a) can be formed in the discharge grille (12).

[0109] FIG. 3 is a cross-sectional view taken along III-III' of FIG. 2. Below, the internal configuration of the air purifier will be explained with reference to FIG. 3.

[0110] The air purifier includes a filter device positioned inside the case (10) and filtering air introduced through the inlet (24a). The air purifier includes a blower (60) positioned inside the case (10) and flowing air inside the case (10) from the inlet (24a) to the outlet (12a). The air purifier includes a water tank (100) positioned inside the case (10) and storing water. The air purifier includes a humidification module that receives water from the water tank (100) and generates humidified air.

[0111] The air purifier may include a base (28). The base (28) may raise the case upward from the ground. The base (28) may be connected to the lower wall (26) of the case (10).

[0112] The case (10) may include a lower wall (26) that covers the lower side of the intake grille (24).

[0113] The upper part of the base (28) can be connected to the lower wall (26). The lower wall (26) is positioned to cover the lower surface of the air purifier, which is spaced upward from the ground by the base (28).

[0114] The intake grille (24) can cover the outer side of the filter (50) and the blower housing (68) to be described below. A plurality of inlets (24a) can be formed in the intake grille (24), which are formed in the vertical direction and spaced apart in the circumferential direction. The inlets (24a) can be formed around where the filter (50) is placed. The inlets (24a) can be formed at the bottom of the intake grille (24). The bottom of the intake grille (24) has the inlets (24a) formed therein, and the top of the intake grille (24) can be formed to be closed to protect the internal components of the air purifier.

[0115] An outer shell (22) may be placed on the upper part of the intake grille (24).

[0116] The filter device can filter the air introduced through the inlet (24a) via the filter (50). The filter device can allow the filtered air to flow upward.

[0117] The filter device includes a filter (50) that filters air flowing into the inlet (24a), and a filter mounting part that fixes the arrangement of the filter (50) inside the case (10).

[0118] The filter (50) may have a cylindrical shape. Accordingly, the filter (50) can filter air sucked in from the front, back, left, and right directions perpendicular to the vertical direction. Air introduced from the inlet (24a) can flow into the inner space of the filter (50). Air passing through the filter (50) can flow to a blower (60) positioned above the filter (50).

[0119] The filter mounting portion includes a lower plate (52) positioned on the lower side of the filter (50), an upper plate (54) positioned on the upper side of the filter (50), and a supporter (not shown) connecting the lower plate (52) and the upper plate (54).

[0120] The lower plate (52) is positioned below the filter (50). The lower plate (52) moves up and down and can detect whether the filter (50) is positioned. A fan sterilization device (53) that irradiates ultraviolet light upwards may be positioned at the center of the lower plate (52).

[0121] The fan sterilization device (53) can sterilize the inside of the blower fan (62) or filter (50) described below.

[0122] An orifice (56) is formed in the upper plate (54). The orifice (56) may be formed at the center of the upper plate (54). The orifice (56) can allow air flowing into the filter (50) to flow to the blower fan (62). The inner circumference of the upper plate (54) has a shape that is bent upward, so that air flowing upward from the internal space of the filter (50) can be guided to the blower fan (62).

[0123] The blower fan (62) can be placed on the upper side of the filter (50).

[0124] The supporter (58) can connect the lower plate (52) and the upper plate (54). The supporter (58) can be spaced apart in the circumferential direction.

[0125] The blower device (60) includes a blower fan (62) that forms air flow inside the case (10) and a fan motor (64) that rotates the blower fan (62).

[0126] The blower fan (62) may form a fan intake port on one side facing the orifice (56) and a fan discharge port on the opposite side of the fan intake port. The blower fan (62) may use a centrifugal fan in which the fan discharge port faces the centrifugal direction opposite to the fan intake port. The blower fan (62) may include a hub connected to a fan motor (64), a shroud spaced apart from the hub at a certain distance and forming a fan intake port, and a blade extending radially to connect the hub and the shroud.

[0127] The blower fan (62) can send air from the lower side to the upper side by operating. The blower fan (62) can draw air toward the orifice (56) and discharge air toward the blower housing (68) where the diffuser (72) is placed.

[0128] The fan motor (64) can be positioned above the blower fan (62).

[0129] The blower device includes a motor cover (66) that covers the outside of a fan motor (64), and a blower housing (68) that is spaced radially outward from the motor cover (66) and guides the air flowing by the blower fan (62) upward.

[0130] Between the motor cover (66) and the blower housing (68), a blower passage (70) may be formed through which air flowing by the blower fan (62) flows upward. The blower passage (70) may extend to the area where the humidification module housing (410) and the flow housing (430) are formed.

[0131] An intake grille (24) may be placed on the outer side of the blower housing (68).

[0132] The blower device (60) includes a diffuser (72) that is positioned between the motor cover (66) and the blower housing (68) and reduces the rotational component of the air flowing upward by the blower fan (62). A plurality of diffusers (72) may be arranged spaced apart in the circumferential direction.

[0133] A control box (74) may be disposed on the upper side of the motor cover (66), forming a space in which a circuit board (76) is disposed inside. The control box (74) may be disposed spaced apart from the inside of the blower housing (68). Accordingly, a blower passage (70) may be formed in the space between the control box (74) and the blower housing (68).

[0134] A plurality of circuit boards (76) may be arranged inside the control box (74). The humidification module includes a first humidification tank (300) that heats water. The humidification module includes a second humidification tank (350) that generates humidified air from water. The humidification module may include a humidification module housing (410) that covers the perimeter of the first humidification tank (300) and the second humidification tank (350). A flow channel housing (430) may be arranged on the outer perimeter of the humidification module housing (410). A blower channel (70) may be formed between the humidification module housing (410) and the flow channel housing (430).

[0135] The air purifier includes a water tank (100) forming a space for storing water, an inner shell (180) forming a space for the water tank (100) to be placed, and a middle tray (200) placed on the lower side of the inner shell (180).

[0136] The water tank (100) may have an inner tank (102) positioned inside the outer tank (160). Accordingly, a connector (120) may be positioned through a through hole (not shown) of the outer tank (160).

[0137] The outer tank (160) can be placed on the upper side of the middle tray (200) while positioned inside the inner shell (180). The middle tray (200) may be a structure that supports the inner shell (180), the outer tank (160), and the inner tank (102). Thus, the load of the inner tank (102), the outer tank (160), and the inner shell (180) can be transferred to the middle tray (200).

[0138] The outer tank (160) is placed around the outer circumference of the inner tank (102).

[0139] The inner tank (102) can be positioned inside the outer tank (160). When the inner tank (102) is positioned inside the outer tank (160), the outer circumference surface of the inner tank (102) can be positioned to contact the inner circumference surface of the outer tank (160).

[0140] The air purifier includes a water softening device (140) placed inside the inner water tank (102).

[0141] The water softening device (140) is positioned inside the inner water tank (102). The water softening device (140) can be fixed in position by being connected to a connector (120) positioned inside the inner water tank (102).

[0142] The inner shell (180) is spaced apart from the outer tank (160). The inner shell (180) is spaced apart from the tank (100). A first discharge channel (32) through which humidified air flows is formed between the inner shell (180) and the outer tank (160).

[0143] A second discharge channel (34) is formed between the outer shell (22) and the inner shell (180).

[0144] The inner shell (180) and the outer shell (22) are spaced apart from each other to form a second discharge channel (34). Filtered clean air flowing through the second discharge channel (34) can flow through it via a blower (60).

[0145] The discharge grill (12) can be positioned above the first discharge channel (32) and the second discharge channel (34) described below.

[0146] The discharge grille (12) can form a constant height in the vertical direction. Accordingly, a mixing channel (13) can be formed between a plurality of ribs (12b) arranged on the discharge grille (12). In the mixing channel (13), the air flowing through the first discharge channel (32) can be mixed with the air flowing through the second discharge channel (34).

[0147] Each of the multiple ribs (12b) is formed such that the height of the outer end is higher than the height of the inner end. Accordingly, the air flowing through the first discharge channel (32) and the second discharge channel (34) can be guided radially inward.

[0148] An interface (30) is provided on one side of the case (10). The interface (30) allows the user to control the power or operation of the air purifier. A display (30) that displays the operating status of the air purifier to the user may be provided on the interface (30).

[0149] FIG. 4 is a front view of an air purifier with a hidden outlet applied according to one embodiment of the present disclosure and an enlarged view of the hidden outlet.

[0150] FIG. 5 is a perspective view of an air purifier according to one embodiment of the present disclosure, and FIG. 6 is an enlarged view of the hidden outlet in FIG. 5.

[0151] Referring to FIGS. 4 to 6, the case (10) includes an outer cover (23) positioned below the outer shell (22). The upper outer shell (22a) is positioned below the discharge grille (12), and the lower outer shell (22b) is positioned below the upper outer shell (22a). The outer cover (23) is positioned below the lower outer shell (22b).

[0152] The display (30) is placed on one side of the case (10). On one side of the outer cover (23), a hole (30a) (see FIG. 7) is formed through which at least a portion of the display (30) passes.

[0153] FIG. 7 is a perspective view of an air purifier with an outer cover separated according to one embodiment of the present disclosure, and FIG. 8 is an enlarged view of a hidden outlet of an inner cover according to one embodiment of the present disclosure.

[0154] Referring to FIGS. 7 and 8, an inner cover (21) may be placed on the inner side of the outer cover (23). The outer cover (23) may be cylindrical. The outer cover (23) may be separated into two semi-cylindrical covers.

[0155] The outer cover (23) can be attached to the inner cover (21). The outer cover (23) can form the shape of the case (10).

[0156] The inner cover (21) may be cylindrical. The inner cover (21) may be positioned radially inside the outer cover (23).

[0157] The outer cover (23) and the inner cover (21) can be detachably combined.

[0158] The inner cover (21) is positioned on the inner side of the outer cover (23), and a second hidden outlet (21a) corresponding to the first hidden outlet (25a) is formed.

[0159] The inner cover (21) includes a second hidden outlet (21a) and a body (21b). A portion of the second hidden outlet (21a) may be formed by opening. The shape and number of the second hidden outlet (21a) may correspond to the shape and number of the first hidden outlet (25a).

[0160] A blower housing (68) is positioned on the upper side of the filter (50), and a blower fan (62) is located inside the blower housing (68). When the blower fan (62) rotates, clean air that has passed through the filter (50) flows upward.

[0161] The first hidden outlet (25a) may be located above the blower fan (62). Additionally, the second hidden outlet (21a) may also be located above the blower fan (62).

[0162] The inner cover (21) may be the Euro housing (430) described above. Alternatively, the Euro housing (430) may be provided separately from the inner cover (21). The inner cover (21) may be located on the upper side of the Euro housing (430).

[0163] A plurality of hidden outlets (25a, 21a) may be formed on the side of the case (10).

[0164] The outer cover (23) may include a plurality of recesses (23a) spaced apart in the circumferential direction. The recesses (23a) are formed by being recessed inward relative to the stripe pattern (23b) exposed on the outside. Accordingly, the recesses (23a) are not easily visible when viewed from the front by the user.

[0165] The first hidden outlet (25a) may be formed by opening a portion of the plurality of recesses (23a). The hidden outlets (25a, 21a) are formed on the side of the case (10). By forming additional outlets on the side of the case (10), the discharge area can be increased and air purification performance can be improved.

[0166] Meanwhile, corresponding to the plurality of first hidden outlets (25a), a plurality of second hidden outlets (21a) are formed in the inner cover (21). The hidden outlets (25a, 21a) may include the first hidden outlet (25a) and the second hidden outlet (21a). The number of the first hidden outlet (25a) and the second hidden outlet (21a) may be the same.

[0167] The shapes of the first hidden outlet (25a) and the second hidden outlet (21a) may be identical. Additionally, the first hidden outlet (25a) and the second hidden outlet (21a) may be formed in a vertically elongated slit shape.

[0168] Meanwhile, the location and shape of the second hidden outlet (21a) may vary depending on the placement of the internal components of the air purifier.

[0169] FIG. 9 is a side view of an air purifier with the outer cover separated according to one embodiment of the present disclosure, and FIG. 10 is an enlarged view of the hidden outlet of the inner cover.

[0170] FIG. 11 is a rear view of an air purifier with an outer cover separated according to one embodiment of the present disclosure.

[0171] Referring to FIGS. 9 to 11, the inner cover (21) may include a fastening member (1030) for coupling with the outer cover (23). The fastening member (1030) may use various coupling means such as a hook or a magnet.

[0172] For example, magnets are placed on both sides of the inner cover (21) and can be coupled to the metal piece of the outer cover (23) by magnetic force. Additionally, the magnets and the metal piece may be interchangeable. For example, metal pieces are placed on both sides of the inner cover (21) and can be coupled to the magnet of the outer cover (23) by magnetic force.

[0173] In addition, the inner cover (21) and the outer cover (23) can be joined together by means of hooks, screws, etc.

[0174] The second hidden outlet (21a) can be spaced apart from the fastening member (1030).

[0175] A predetermined space (1000) may be formed in the inner cover (21) for reasons such as internal component placement and prevention of interference with internal components. The second hidden outlet (21a) may have a step in some area (1010) depending on the shape of the space (1000).

[0176] The first hidden outlet (25a) and the second hidden outlet (21a) may overlap at least partially. When viewed from the front, the openings of the first hidden outlet (25a) and the second hidden outlet (21a) overlap so that air can pass through.

[0177] A first hidden outlet (25a) may be formed in the upper grill (25). A plurality of grills (25b) may be spaced apart in the circumferential direction of the upper grill (25). A first hidden outlet (25a) may be formed between the plurality of grills (25b).

[0178] The first hidden outlet (25a) is located in the recess (23a). That is, the first hidden outlet (25a) in the form of a vertical slit is formed at the recessed position of the outer cover (23) that forms the exterior of the air purifier. Accordingly, since the first hidden outlet (25a) is not easily visible from the front, it is easy to increase the discharge area while minimizing visual exposure.

[0179] By forming a side-direction hidden outlet (25a, 21a) in the case (10), higher air purification performance can be secured compared to the same volume.

[0180] The outer cover (23) may have an inlet (24a) formed on the lower side and a first hidden outlet (25a) formed on the upper side above the inlet (24a). The inlet (24a) and the first hidden outlet (25a) may be formed by opening a portion of a plurality of recessed parts (23a). The number of the first hidden outlet (25a) and the second hidden outlet (21a) may be less than the number of inlets (24a).

[0181] Additionally, the inlet (24a) and hidden outlet (25a, 21a) may have a long stripe shape in the vertical direction.

[0182] A slit-shaped first hidden outlet (25a) and a second hidden outlet (21a) share an opening and are arranged in line with the first intermediate discharge port, while the first hidden outlet (25a) is located at a relatively higher position than the second hidden outlet (21a).

[0183] FIG. 12 is a drawing showing the air flow of an air purifier according to one embodiment of the present disclosure. Referring to FIG. 12, the outer first hidden outlet (25a) is formed at a higher position than the inner second hidden outlet (21a), so that the airflow can surround the air purifier and flow upward, and effectively form an air flow in the upward direction.

[0184] If clean air is discharged directly from the side of an air purifier, it may come into direct contact with the user. This can happen during winter or when temperatures are low. If the user is exposed to the air directly, they may feel discomfort. However, according to the present disclosure, even if air is discharged from the side, discomfort can be reduced by guiding the air to flow upward while surrounding the air purifier.

[0185] FIGS. 13 and FIGS. 14 are drawings referenced in the description of the internal air flow of an air purifier according to one embodiment of the present disclosure.

[0186] FIG. 13 is a cross-sectional view showing hidden outlets (25a, 21a) on the right side of the cross-sectional view, and FIG. 14 is an enlarged view of the hidden outlets (25a, 21a).

[0187] Referring to FIGS. 13 and 14, the hidden outlet (25a, 21a) is located between the lower inlet (24a) and the upper outlet (12a).

[0188] The opening of the second hidden outlet (21a) is positioned so that it partially or entirely overlaps with the opening of the first hidden outlet (25a), thereby allowing fluid to flow from the internal flow path of the product toward the outer case (23).

[0189] The air flowing through the blower fan (62) can flow upward through the blower passage (70).

[0190] In the area where the hidden outlet (25a, 21a) is not formed, the air passing through the air passage (70) is discharged only to the outlet (12a) of the discharge grille (12), like the air flow (1310) on the left.

[0191] However, when the hidden outlet (25a, 21a) is formed, a portion of the air passing through the air passage (70) passes through the hidden outlet (25a, 21a) and is discharged, resulting in an air flow (1320) on the right. Therefore, in addition to the air flow (1310) discharged to the outlet (12a), an additional air flow (1320) may be generated.

[0192] FIGS. 15 and 16 are cross-sectional views of an air purifier according to one embodiment of the present disclosure, taken at a height where hidden outlets (25a, 21a) are arranged.

[0193] Referring to FIGS. 15 and 16, the hidden outlet (25a, 21a) can be configured as a 4-way (1510, 1520, 1530, 1540). However, the hidden outlet (25a, 21a) can also be configured as a 2-way or 3-way, and a 360° discharge configuration is also possible.

[0194] The first hidden outlet (25a) is located at a relatively higher position than the second hidden outlet (21a). This allows the flow discharged upward to be effectively discharged.

[0195] A plurality of first hidden outlets (25a) may be formed symmetrically with respect to the display (30). Additionally, a plurality of second hidden outlets (21a) may be formed symmetrically with respect to the display (30).

[0196] For example, front hidden outlets (1510, 1520) may be symmetrically arranged on the left and right sides of the display (30). Each front hidden outlet (1510, 1520) may include a first hidden outlet (25a) and a second hidden outlet (21a).

[0197] Additionally, the rear hidden outlets (1530, 1540) may be arranged symmetrically. Each rear hidden outlet (1530, 1540) may include a first hidden outlet (25a) and a second hidden outlet (21a).

[0198] The rear hidden outlet (1530, 1540) can be positioned considering the internal Euro.

[0199] FIGS. 17 and FIGS. 18 are drawings referenced in the description of the location of a hidden outlet according to one embodiment of the present disclosure, and are drawings showing the rear of an air purifier.

[0200] Referring to FIGS. 17 and 18, the rear hidden outlets (1530, 1540) may be located below the lower outer shell (22b). The rear hidden outlets (1530, 1540) may be located below the upper outlet (12a). The front hidden outlets (1510, 1520) may also be located at the same height as the rear hidden outlets (1530, 1540). Front

[0201] Additionally, the front hidden outlet (1510, 1520) and the rear hidden outlet (1530, 1540) may be located above the blower housing (68).

[0202] Referring to FIG. 3 and FIG. 18, a humidification channel inlet (405) is connected to the airflow channel (70). Air can be introduced into the humidification module through the humidification channel inlet (405).

[0203] The humidification module may include a humidification inlet (405). A portion of the air blown by the blower fan (62) may be introduced into the second humidification tank (350) through the humidification inlet (405).

[0204] The front hidden outlet (1510, 1520) and the rear hidden outlet (1530, 1540) may be located above the humidification inlet (405). The first hidden outlet (25a) and the second hidden outlet (21a) included in the front hidden outlet (1510, 1520) and the rear hidden outlet (1530, 1540) may each be located above the humidification inlet (405).

[0205] In particular, the first hidden outlet (25a) and the second hidden outlet (21a) included in the rear hidden outlet (1530, 1540) may be located above the humidification inlet (405).

[0206] If the humidification inlet (405) is positioned higher than the rear hidden outlet (1530, 1540), some of the remaining flow that exits through the rear hidden outlet (1530, 1540) enters the humidification module, so the humidification flow cannot be sufficiently formed.

[0207] Therefore, the rear hidden outlet (1530, 1540) can be positioned above the humidification inlet (405) so that a flow rate equal to the area of ​​the humidification inlet (405) can enter the humidification module without being affected by the rear hidden outlet (1530, 1540).

[0208] Meanwhile, a plurality of rear hidden outlets (1530, 1540) may be formed symmetrically with respect to the humidification inlet (405). The first hidden outlet (25a) and the second hidden outlet (21a) included in the rear hidden outlets (1530, 1540) may be arranged symmetrically with respect to the humidification inlet (405).

[0209] Meanwhile, the air purifier may include a guide (405a). The guide (405a) may be positioned between the humidification inlet (405) and the blower housing (68). The space between the multiple guides (405a) may face the humidification inlet (405) vertically.

[0210] The guide (405a) can guide a portion of the air flowing upward to the humidification inlet (405).

[0211] FIG. 19 is a drawing referenced in the description of a hidden outlet according to one embodiment of the present disclosure, in which a first hidden outlet (25a) is illustrated.

[0212] Referring to FIG. 19, a plurality of grills (25b) are arranged spaced apart in the circumferential direction. The plurality of grills (25b) may be part of a stripe pattern (23b).

[0213] A plurality of first hidden outlets (25a) are spaced apart in the circumferential direction. The first hidden outlets (25a) may be configured as slit-shaped openings.

[0214] The first hidden outlet (25a) can be formed in the recess (23a) of the outer cover (23). Accordingly, the first hidden outlet (25a) can be located relatively inward compared to the grill (25b).

[0215] The first hidden outlet (25a) may be configured in the form of a long slit in the vertical direction. The length (L1) of the first hidden outlet (25a) may be formed to be longer than the width (D1) of the first hidden outlet (25a).

[0216] The length (L1) of the first hidden outlet (25a) can be formed to be at least 10 times the width (D1) of the first hidden outlet (25a). Accordingly, a sufficient discharge area can be secured.

[0217] By increasing the length (L1) of the first hidden outlet (25a), the discharge area can be increased. Therefore, the air purification performance can be proportional to the length (L1) of the first hidden outlet (25a).

[0218] Figure 20 is a diagram showing the airflow evaluation results according to the discharge port area.

[0219] FIG. 20 shows the airflow volume of the blower fan (62) according to rotational speed in the case where there are no hidden outlets (25a, 21a) (2010), the case where the hidden outlets (25a, 21a) are formed relatively short (2020), and the case where the hidden outlets (25a, 21a) are formed relatively long (2030).

[0220] When the filter (50) is the same, the air purification performance is proportional to the airflow. For example, an airflow of 2.75 CMM is required to achieve an air purification performance of 6 pyeong (Korean unit). Therefore, the airflow can represent the air purification performance.

[0221] Referring to FIG. 20, when there are no hidden outlets (25a, 21a) (2010), the performance was 3.9 to 4.0 pyeong when operating at 2150 rpm.

[0222] However, when a hidden outlet (25a, 21a) was applied (2020, 2030), a performance level of 6.0 pyeong was achieved when operating at 2150 rpm.

[0223] Referring to Fig. 20, it can be seen that when a hidden outlet (25a, 21a) is applied (2020, 2030), the air purification performance increases by 1.5 times.

[0224] The second hidden outlet (21a) may also be designed with the same specifications as the first hidden outlet (25a). Meanwhile, the length of the second hidden outlet (21a) may be greater than the length of the first hidden outlet (25a). That is, the second hidden outlet (21a) may be formed with the same length as the first hidden outlet (25a) or longer.

[0225] The hidden outlet (25a, 21a), composed of a combination of the first hidden outlet (25a) and the second hidden outlet (21a), is implemented differently depending on the relative height of the first hidden outlet (25a) and the second hidden outlet (21a). Therefore, the relative height difference between the first hidden outlet (25a) and the second hidden outlet (21a) is important. The height difference can be summarized as a discharge path or discharge flow angle, and is a subject of optimization design to secure optimal performance.

[0226] FIGS. 21 and FIGS. 22 are drawings referenced in the explanation regarding the height difference between the first hidden outlet and the second hidden outlet.

[0227] Referring to FIG. 21, air passes through the overlapping openings of the first hidden outlet (25a) and the second hidden outlet (21a) and is discharged to the outside. Since air flow is generated by the lower blower fan (62), an upward flow (2110) is basically generated.

[0228] FIG. 21 illustrates a case where the first hidden outlet (25a) and the second hidden outlet (21a) are positioned without a height difference, so that no angle is applied between the first hidden outlet (25a) and the second hidden outlet (21a). In this case, a floating blind spot (2120) where no wind is felt may occur on the lower outer side of the first hidden outlet (25a).

[0229] In addition, when there is no height difference between the first hidden outlet (25a) and the second hidden outlet (21a), the rising angle of the rising flow (2110) is also formed gently.

[0230] As the discharge area increases, air purification performance increases.

[0231] However, even if hidden outlets (25a, 21a) are added with the same area, the air purification performance actually decreases when the angle between the first hidden outlet (25a) and the second hidden outlet (21a) is 0˚.

[0232] FIG. 22 illustrates a case where there is a height difference between the hidden outlets (25a, 21a).

[0233] Referring to FIG. 22, the first hidden outlet (25a) is formed in the outer cover (23) with a first length (L22a), and the second hidden outlet (21a) is formed in the inner cover (21) with a second length (L22b).

[0234] When viewed from the front, the first hidden outlet (25a) and the second hidden outlet (21a) may have some overlapping sections (L22c).

[0235] Air passes through the first hidden outlet (25a) and the second hidden outlet (21a) and is discharged to the outside.

[0236] Referring to FIG. 22, by creating a height difference (L22c-L22b) between the first hidden outlet (25a) and the second hidden outlet (21a) and applying an angle (dg1) between the first hidden outlet (25a) and the second hidden outlet (21a), the angle of the upward flow (2210) can be formed more steeply.

[0237] More preferably, the angle (dg1) formed between the first line (V1) connecting the bottom of the first hidden outlet (25a) and the bottom of the second hidden outlet (21a) and the second line (V2) extending from the bottom of the first hidden outlet (25a) may be 50 to 80 degrees.

[0238] FIG. 23 is a drawing referenced in the explanation of the air purification performance test results according to the placement positions of the first hidden outlet and the second hidden outlet, in which the air purification performance was measured while adjusting the angle (dg1).

[0239] Referring to Fig. 23, air purification performance of a certain level (e.g., 6 pyeong) can be secured when the angle (dg1) is in the range of 50 to 80 degrees.

[0240] The air purification performance increases as the angle between the angles (dg1) is aligned with the flow direction. Referring to Fig. 23, maximum performance is shown at 73.3°.

[0241] FIG. 24 is a drawing referenced in the description of a hidden outlet according to one embodiment of the present disclosure, illustrating a case where the hidden outlet (25a, 21a) has a height difference only at the bottom.

[0242] Referring to FIG. 24, the first hidden outlet (25a) is formed in the outer cover (23) with a third length (L24a), and the second hidden outlet (21a) is formed in the inner cover (21) with a fourth length (L24b). At this time, the fourth length (L24b) may be larger than the second length (L24a).

[0243] When viewed from the front, the first hidden outlet (25a) and the second hidden outlet (21a) may overlap in a portion (L24c). In this case, the overlapping portion (L24c) may be significantly larger than the first length (L24a) as an upper limit. Air passes through the first hidden outlet (25a) and the second hidden outlet (21a) and is discharged to the outside.

[0244] Referring to FIG. 22, by creating a height difference (L22c-L22b) between the first hidden outlet (25a) and the second hidden outlet (21a) and applying an angle (dg1) between the first hidden outlet (25a) and the second hidden outlet (21a), the angle of the upward flow (2210) can be formed more steeply.

[0245] When the angle (dg2) formed between the line connecting the bottom of the first hidden outlet (25a) and the bottom of the second hidden outlet (21a) and the line extending from the bottom of the first hidden outlet (25a) is configured to be the same as the angle (dg1) of FIG. 22, there was no significant difference in air purification performance. Therefore, the angle between the top of the first hidden outlet (25a) and the top of the second hidden outlet (21a) is not very important, and the angle between the bottoms is important.

[0246] Referring to FIG. 22 and FIG. 24, if the angle between the lower ends (dg1, dg2) is similar, the angle of the upward flow (2210) (2410) is also formed similarly.

[0247] Meanwhile, at least some of the ends of the first hidden outlet (25a) and the second hidden outlet (21a) may be formed rounded or inclined toward the upper direction.

[0248] FIGS. 25 and FIGS. 26 are drawings referenced in the description of a hidden outlet according to an embodiment of the present disclosure.

[0249] Referring to FIGS. 25 and 26, the first hidden outlet (25a) is formed in the outer cover (23), and the second hidden outlet (21a) is formed in the inner cover (21).

[0250] Referring to FIG. 25, the first hidden outlet (25a) may be formed with only the lower part (2522) inclined, among the upper part (2521) and the lower part (2522).

[0251] Additionally, among the upper (2531) and lower (2532) of the second hidden outlet (21a), only the upper (2532) may be formed at an angle.

[0252] Accordingly, the air flow (2510) can be made to rise more steeply.

[0253] Referring to FIG. 26, the first hidden outlet (25a) may be formed with an upper (2621) and a lower (2622) at an angle. Additionally, the second hidden outlet (21a) may be formed with an upper (2631) and a lower (2632) at an angle.

[0254] Accordingly, the air flow (2610) can be made to rise more steeply.

[0255] The hidden outlet (25a, 21a) is composed of a group of slits with specific spacing, and depending on the number of slit groups, it may be configured as a 2-way, 3-way, or 4-way side outlet or have multiple discharge ports in a 360-degree direction. Through this, an air purification airflow can be implemented in which the airflow discharged from the side surrounds the product and moves upward.

[0256] FIG. 27 is a drawing showing a hidden outlet positioned on the front-side of an air purifier according to one embodiment of the present disclosure, and FIG. 28 is a drawing showing a second hidden outlet positioned on the front-side of an air purifier according to one embodiment of the present disclosure.

[0257] FIG. 27 shows the hidden outlet (25a, 21a) with the outer cover (23) attached, and FIG. 28 shows the second hidden outlet (21a) with the outer cover (23) detached.

[0258] Referring to FIGS. 27 and 28, the case (10) includes an outer cover (23) positioned below the lower outer shell (22b) and an inner cover (21) inside the outer cover (23).

[0259] The display (30) is placed on one side of the case (10).

[0260] Hidden outlets (25a, 21a) can be positioned at a predetermined distance (g1, g2) from the display (30).

[0261] The hidden outlets (25a, 21a) may be arranged symmetrically with respect to the display (30). The gap (g1) between the hidden outlets (25a, 21a) and one side of the display (30) may be the same as the gap (g2) between the hidden outlets (25a, 21a) and the other side of the display (30).

[0262] The outer cover (23) may include a plurality of recesses (23a) spaced apart in the circumferential direction. The first hidden outlet (25a) may be formed by opening some of the recesses (23a).

[0263] In the inner cover (21), a plurality of second hidden outlets (21a) are formed corresponding to a plurality of first hidden outlets (25a).

[0264] The number and shape of the first hidden outlet (25a) and the second hidden outlet (21a) may be the same. Additionally, the first hidden outlet (25a) and the second hidden outlet (21a) may be formed in a long slit shape in the vertical direction.

[0265] The first hidden outlet (25a) can be formed from one side of the display (30) to the other side of the display (30) along the perimeter of the outer cover (23).

[0266] FIG. 29 is a drawing showing a hidden outlet positioned on the side-rear of an air purifier according to one embodiment of the present disclosure, and FIG. 30 is a drawing showing a second hidden outlet positioned on the side-rear of an air purifier according to one embodiment of the present disclosure.

[0267] Referring to FIGS. 29 and 30, the hidden outlets (25a, 21a) are formed evenly in the circumferential direction. The first hidden outlet (25a) is formed evenly in the circumferential direction along the periphery of the outer cover (23). The second hidden outlet (21a) is formed evenly in the circumferential direction along the periphery of the inner cover (21).

[0268] That is, hidden outlets (25a, 21a) are evenly distributed in the 360-degree direction, excluding the display (30) and the area near the display (30). Accordingly, the discharge area can be maximized.

[0269] The first hidden outlet (25a) is located at a relatively higher position than the second hidden outlet (21a). This allows the flow discharged upward to be effectively discharged.

[0270] Meanwhile, the inner cover (21) and the outer cover (23) may include a fastening member (2830) for joining. The fastening member (2830) may use various joining means such as hooks or magnets.

[0271] For example, the fastening member (2830) may include a magnet or a metal piece. Additionally, the fastening member (2830) may include a hook, a screw, etc.

[0272] The second hidden outlet (21a) may be spaced apart from the fastening member (2830). The position of the second hidden outlet (21a) may be determined first so as not to interfere with the fastening member (2830) and the internal flow path, and the position of the first hidden outlet (25a) may be determined corresponding to the position of the second hidden outlet (21a).

[0273] FIGS. 31 and 32 are cross-sectional views of an air purifier according to one embodiment of the present disclosure. They are cross-sectional views taken at a height where hidden outlets (25a, 21a) are arranged.

[0274] Referring to FIGS. 31 and FIGS. 32, hidden outlets (25a, 21a) can be arranged in a 360-degree direction (excluding the display (30) area).

[0275] Hidden outlets (25a, 21a) are formed spaced apart in the circumferential direction from one side of the display (30) to the other. The first hidden outlet (25a) is formed spaced apart in the circumferential direction along the periphery of the outer cover (23) from one side of the display (30) to the other. The second hidden outlet (21a) is formed spaced apart in the circumferential direction along the periphery of the inner cover (21).

[0276] Accordingly, clean air can be discharged around the air purifier, and the discharge area can be maximized.

[0277] Although preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications can be made by those skilled in the art without departing from the gist of the present disclosure as claimed in the patent claims.

Claims

1. A case forming the exterior; A water tank disposed inside the above case and forming a space for storing water; and, A humidification module disposed below the above water tank and generating humidified air with water supplied from the above water tank; comprising The above case is, An outer cover in which a first hidden outlet is formed and It includes an inner cover disposed on the inner side of the outer cover and having a second hidden outlet formed corresponding to the first hidden outlet, and The above outer cover is, It includes a plurality of depressions spaced apart in the circumferential direction, and The above-mentioned first hidden outlet is an air purifier formed by opening a portion of the above-mentioned plurality of recesses.

2. In Paragraph 1, The above-mentioned first hidden outlet is, An air purifier with a long vertical stripe shape.

3. In Paragraph 1, It further includes a discharge grille positioned on the upper side of the above-mentioned tank and forming a plurality of outlets; The above plurality of outlets are air purifiers formed on the upper surface of the case.

4. In Paragraph 1, A filter disposed inside the above case and filtering the incoming air; and It further includes a blower fan positioned above the filter, The first hidden outlet above is an air purifier located above the blower fan.

5. In Paragraph 4, It further includes a blower passage through which air flowing by the above blower fan flows upward; The above humidification module includes a humidification channel inlet connected to the above airflow channel, and The above-mentioned first hidden outlet is an air purifier located above the above-mentioned humidification inlet.

6. In Paragraph 5, The above first hidden outlet is an air purifier in which a plurality of outlets are formed symmetrically with respect to the above humidification inlet.

7. In Paragraph 4, The above case is, An air purifier including an inlet formed on the outer side of the above filter.

8. In Paragraph 7, An air purifier in which the number of inlets is greater than the number of first hidden outlets.

9. In Paragraph 1, The above-mentioned first hidden outlet and the above-mentioned second hidden outlet are air purifiers in which at least a portion overlaps.

10. In Paragraph 1, The above-mentioned first hidden outlet is an air purifier positioned higher than the above-mentioned second hidden outlet.

11. In Paragraph 10, An air purifier in which the angle formed between a first line connecting the bottom of the first hidden outlet and the bottom of the second hidden outlet, and a second line extending from the bottom of the first hidden outlet, is 50 to 80 degrees.

12. In Paragraph 1, At least some of the ends of the first hidden outlet and the second hidden outlet are, An air purifier formed in a rounded or inclined shape facing upward.

13. In Paragraph 1, It further includes a display disposed on one side of the above case, and The above first hidden outlet is an air purifier in which a plurality of outlets are formed symmetrically with respect to the display.

14. In Paragraph 1, It further includes a display disposed on one side of the above case, and The first hidden outlet is an air purifier formed from one side of the display to the other side of the display along the perimeter of the outer cover.

15. In Paragraph 1, An air purifier in which the length of the first hidden outlet is formed to be longer than the width of the first hidden outlet.

16. In Paragraph 15, An air purifier in which the length of the first hidden outlet is at least 10 times the width of the first hidden outlet.

17. A case forming the exterior; A water tank disposed inside the above case and forming a space for storing water; and, A humidification module disposed below the above water tank and generating humidified air with water supplied from the above water tank; comprising The above case is, An outer cover having an inlet formed on the lower side and a first hidden outlet formed on the upper side above the inlet, and An air purifier comprising an inner cover disposed on the inner side of the outer cover and having a second hidden outlet formed corresponding to the first hidden outlet.

18. In Paragraph 17, The above outer cover is, It includes a plurality of depressions spaced apart in the circumferential direction, and The above inlet and the above first hidden outlet are an air purifier formed by opening a portion of the above plurality of recesses.

19. In Paragraph 18, It further includes a discharge grille positioned on the upper side of the above-mentioned tank and forming a plurality of outlets; The above plurality of outlets are air purifiers formed on the upper surface of the case.

20. A case forming the exterior; A filter disposed inside the above case and filtering the incoming air; and, Includes a blower fan positioned above the filter; The above case is, An outer cover having an inlet formed on the lower side and a first hidden outlet formed on the upper side above the inlet, and An air purifier comprising an inner cover disposed on the inner side of the outer cover and having a second hidden outlet formed corresponding to the first hidden outlet.

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