WO2021201363A1

WO2021201363A1 - Air cleaner

Info

Publication number: WO2021201363A1
Application number: PCT/KR2020/015129
Authority: WO
Inventors: Jiug Ha; Kangeui Cho; Sungkyong Han; Sehwan Bae; Myungwhoon Lee
Original assignee: Lg Electronics Inc.
Priority date: 2020-03-31
Filing date: 2020-11-02
Publication date: 2021-10-07
Also published as: KR20210121930A; CN115398156A

Abstract

Disclosed is an air cleaner including a blower including a casing for defining appearance of the blower, a blow fan disposed inside the casing surface to discharge the air, an air passage controller disposed on the blow fan and inside the casing to adjust a flow area of the air discharged from the blow fan, and a discharge hole defined on the air passage controller to pass through the casing to discharge the air discharged from the blow fan, a flow adjusting device disposed on the blower to change a discharge direction of the air discharged from the blower, and a guide member disposed between the blower and the flow adjusting device, wherein one end thereof is connected to the blower and the other end thereof is connected to the flow adjusting device, wherein the guide member induces a state transition of the flow adjusting device.

Description

AIR CLEANER

The present disclosure relates to an air cleaner.

An air cleaner is understood as an appliance that inhales and filters contaminated air and then discharges the filtered air, and is configured to purify an indoor space such as a home or an office. Generally, the air cleaner includes a blower configured to inhale external air and discharge the inhaled air, and a filter disposed inside the blower to filter dust, bacteria, and the like in the air. In this connection, the air cleaner may further include a flow adjusting device configured to adjust a discharge direction of the air discharged from the blower. However, the blower has a limitation of not being able to adjust a discharge region of the air by itself, except in a case of using the flow adjusting device.

That is, in a case in which the air does not need to be discharged in all directions, for example, in a case in which the air cleaner is disposed adjacent to a wall surface of the indoor space, because the air cleaner is not able to restrict the air from being discharged from the blower to a portion adjacent to the wall surface, there is a problem that efficient blowing is not able to be achieved.

Prior art (Korean Patent Application Publication No. 10-2017-0101100, hereinafter, referred to as prior art 1) discloses an air cleaner further including the flow adjusting device configured to adjust the discharge direction of the air discharged from the blower. In the air cleaner of the prior art 1, the air inhaled into the blower is filtered by the filter disposed inside the blower and then discharged in a vertical direction perpendicular to a top surface of the blower. Thereafter, the air discharged from the blower is blown in a direction other than the vertical direction through the flow adjusting device.

However, even with the air cleaner of the prior art 1, the blower is still not able to limit the discharge region of the air by itself. Therefore, there is a problem that the air is discharged from the blower to all regions, and thus the efficient blowing is not able to be achieved.

Another prior art (Korean Patent Application Publication No. 10-2019-0119565, hereinafter, referred to as prior art 2) discloses an air cleaner including a discharge guide configured to change a flow direction of the air flowing inside the blower. In the air cleaner of the prior art 2, as a rotation guide plate coupled to the discharge guide rotates, the discharge region of the air discharged from the blower may be limited.

However, in a case of the air cleaner of the prior art 2, because the rotation guide plate is formed to have a structure that is at least partially shielded in a region where the air flows, there is a limitation in that the air is not able to be discharged to the all regions without limiting the discharge region of the air discharged from the blower.

One of various tasks of the present disclosure is to provide an air cleaner including a blower that inhales air from the outside, filters the air, and limit a flow region of the air by itself, thereby discharging the air only in a specific region.

One of various tasks of the present disclosure is to provide an air cleaner including an air passage controller that is disposed inside the blower to selectively close or open the flow region of the air, thereby controlling a discharge region of the air.

An air cleaner according to exemplary embodiments of the present disclosure includes a blower including a blow fan disposed therein and a discharge hole defined in a top surface thereof. The blower may further include an air passage controller that is disposed between the blow fan and the discharge hole to selectively close or open a flow region of air to control a discharge region of the air. The air passage controller may include an air passage control panel disposed inside the blower to partially cover a space in which the air flows, and an air passage control link coupled to the air passage control panel and controlled to descend and ascend.

When the air passage control link is controlled to ascend, the air passage control panel may be closed, and the air discharged from the blower may be evenly blown across all regions.

When the air passage control link is controlled to descend, the air passage control panel may be opened, and accordingly, the air discharged from the blower may be selectively blown to a specific region.

An air cleaner according to exemplary embodiments of the present disclosure may include a blower configured to inhale, filter, and discharge air, a flow adjusting device disposed on the blower to change a discharge direction of the air discharged from the blower, and a guide member disposed between the blower and the flow adjusting device, wherein one end thereof is connected to the blower and the other end thereof is connected to the flow adjusting device, wherein the guide member induces a state transition of the flow adjusting device. The blower may include an air passage controller disposed inside the blower to selectively close or open a flow region of the air, thereby controlling a discharge region of the air. The air passage controller may selectively close a portion of a flow area where the air flows between the blow fan disposed inside the blower and the discharge hole defined in a top surface of the blower, such that the air discharged from the blow fan may be selectively concentrated in a specific region.

An air cleaner according to exemplary embodiments of the present disclosure includes a blower including a casing for defining appearance of the blower, an inhale hole defined in a side wall of the casing to inhale air from the outside, a filter member disposed inside the casing to filter the inhaled air, a blow fan disposed inside the casing and on a top surface of the filter member to discharge the filtered air, an air passage controller disposed on the blow fan and inside the casing to adjust a flow area of the air discharged from the blow fan, and a discharge hole defined on the air passage controller to pass through the casing to discharge the air discharged from the blow fan, a flow adjusting device disposed on the blower to change a discharge direction of the air discharged from the blower, and a guide member disposed between the blower and the flow adjusting device, wherein one end thereof is connected to the blower and the other end thereof is connected to the flow adjusting device, wherein the guide member induces a state transition of the flow adjusting device. The air passage controller selectively closes a portion of a flow area where the air flows between the blow fan and the discharge hole, such that the air discharged from the blow fan is selectively concentrated in a specific region.

The air passage controller may include a first frame rotatably disposed on the blow fan and having a cylinder shape, a second frame that has a top surface having the same vertical level as a top surface of the first frame, and is spaced from the first frame and has a ring shape surrounding a top of the first frame, an air passage control panel disposed between the first frame and the second frame, wherein one end of the air passage control panel is fixed to the first frame, and the other end thereof is fixed to the second frame, wherein the control panel partially covers a space between the first frame and the second frame, and an air passage control link disposed inside the first frame, wherein the air passage control link is connected to the other end of the air passage control panel to induce opening and closing of the air passage control panel. A concentrated air passage may be disposed on a portion of a space between the first frame and the second frame not covered with the air passage control panel.

The air passage controller may further include a first actuator disposed inside the first frame and configured to drive ascending and descending of the air passage control link, and a second actuator disposed inside the first frame and configured to drive rotation of the first frame. The first actuator and the second actuator may be spaced apart from each other.

The first actuator may include a first motor for providing power, a first shaft that protrudes from one end of the first motor and is rotatable, and a first wheel coupled to the first shaft. A first rail extending along a vertical direction perpendicular to the ground may be disposed on a portion of an inner wall of the air passage control link. As the first wheel rotates in an engaged manner with the first rail, the ascending and the descending of the air passage control link may be controlled.

A bottom surface of the first frame may have a first opening and a second opening defined at positions corresponding to an outer peripheral portion of the air passage control link and a lower portion of the first rail, respectively, the first opening may refer to a region where the outer peripheral portion of the air passage control link passes through the bottom surface of the first frame in the vertical direction when the air passage control link descends, and the second opening may refer to a region where the lower portion of the first rail passes through the bottom surface of the first frame in the vertical direction when the air passage control link descends.

The air passage control panel may include a plurality of control panels and a plurality of through-members respectively passing through the control panels and formed integrally with the control panels. Each through-member may extend through the second frame, each control panel, and the first frame sequentially along a first direction parallel to the ground.

Each through-member may pass through the first frame along the first direction, then extend on a top surface of the air passage control link, and then bend and extend along a second direction different from the first direction.

The first direction and the second direction may be orthogonal to each other.

The air passage control link may include a plurality of through-fasteners configured to protrude from the top surface thereof, one end of each through-member extending from each control panel and passing through the second frame may be fastened to the second frame, and the other end of each through-member extending from each control panel and passing through the first frame may be fastened to each through-fastener.

When the air passage control link descends by the first actuator, the other end of each through-member may descend together, such that each control panel integrally formed with each through-member may be rotated in one direction, and thus the air passage control panel may be controlled to be open. When the air passage control link ascends by the first actuator, the other end of each through-member may ascend together, such that each control panel integrally formed with the through-member may be rotated in the opposite direction to said one direction, and thus the air passage control panel may be controlled to be closed.

Each of the control panels may have an annulus sector shape of a trapezoid with round top and bottom sides.

The control panels may be arranged to partially cover the space between the first frame and the second frame.

The second actuator may include a second motor for providing power, a second shaft that protrudes from one end of the second motor and is rotatable, and a second wheel coupled to the second shaft. A second rail extending along a horizontal direction horizontal to the ground may be disposed on a portion of an inner wall of the casing of the blower. As the second wheel rotates in an engaged manner with the second rail, the rotation of the first frame may be controlled.

When the first frame is rotated in one direction by the second actuator, the other end of the air passage control panel fixed to the first frame may be rotated in said one direction, and thus, the concentrated air passage may also be controlled to rotate in said one direction.

The air passage control link may have a ring shape surrounded with an inner wall of the first frame in the plan view.

The blower may include a first blower that filters and blows air at a relatively low vertical level, and a second blower that filters and blows air at a relatively high vertical level, wherein the first blower and the second blower are sequentially stacked in a vertical direction perpendicular to the ground. The first blower may include a first casing for defining appearance of the first blower, a first filter member disposed in a lower portion of an interior of the first casing to filter the air, and a first blow fan disposed in an upper portion of the interior of the first casing to generate air flow. The second blower may include a second casing for defining appearance of the second blower, a second filter member disposed in a lower portion of an interior of the second casing to filter the air, and a second blow fan disposed in an upper portion of the interior of the second casing to generate air flow. The air passage controller may be disposed in at least one of the first blower and the second blower.

The air passage controller may be composed of a first air passage controller and a second air passage controller, the first air passage controller may be disposed inside the first blower, and the second air passage controller may be disposed inside the second blower.

An air cleaner according to exemplary embodiments of the present disclosure includes a blower including a casing for defining appearance of the blower, an inhale hole defined in a side wall of the casing to inhale air from the outside, a filter member disposed inside the casing to filter the inhaled air, a blow fan disposed inside the casing and on a top surface of the filter member to discharge the filtered air, an air passage controller disposed on the blow fan and inside the casing and configured to adjust a flow area of the air discharged from the blow fan, the air passage controller including a first frame rotatably disposed on the blow fan and having a cylinder shape and a second frame having a ring shape surrounding at least a portion of the first frame, and a discharge hole defined on the air passage controller to pass through the casing and configured to discharge the air discharged from the blow fan, and a flow adjusting device disposed on the blower and configured to change a discharge direction of the air discharged from the blower. The air passage controller further includes an air passage control panel disposed between the first frame and the second frame, and configured to partially cover a space between the first frame and the second frame, and a concentrated air passage is disposed on a portion of a space between the first frame and the second frame not covered with the air passage control panel.

The air passage controller further includes an air passage control link disposed inside the first frame, and the air passage control link is connected to the other end of the air passage control panel and configured to induce opening and closing of the air passage control panel.

The air passage controller further includes a first actuator disposed inside the first frame and configured to drive ascending and descending of the air passage control link, and a second actuator disposed inside the first frame and configured to drive rotation of the first frame, the air passage control panel is controlled to be open when the air passage control link descends by the first actuator, and the air passage control panel is controlled to be closed when the air passage control link ascends by the first actuator.

The air cleaner according to exemplary embodiments of the present disclosure may include the blower that inhales the air from the outside and then filters and discharges the inhaled air. The air passage controller that selectively closes the portion of the flow area in which the air flows to allow the air discharged from the blower is selectively concentrated in the specific region may be disposed inside the blower.

The air passage controller may be disposed inside the blower and controlled to selectively close the portion of the flow area in which the air flows, and accordingly, the air discharged from the blower may be selectively blown to the specific region.

The air passage controller may be disposed inside the blower and controlled to open all flow areas in which the air flows, and accordingly, the air discharged from the blower may be evenly blown across all regions.

FIG. 1 to FIG. 4 are perspective views for illustrating an air cleaner according to exemplary embodiments of the present disclosure.

FIG. 5 to FIG. 8 are perspective views, a cross-sectional view, and a side elevation view for illustrating an air cleaner according to exemplary embodiments of the present disclosure.

FIG. 9 to FIG. 18 are perspective views, cross-sectional views, top views, and side elevation views for illustrating an air cleaner according to exemplary embodiments of the present disclosure.

FIG. 19 to FIG. 26 are perspective views and cross-sectional views for illustrating an air cleaner according to exemplary embodiments of the present disclosure.

FIG. 27 to FIG. 34 are perspective views, cross-sectional views and rear views for illustrating an air cleaner according to exemplary embodiments of the present disclosure.

Hereinafter, specific embodiments of the present disclosure will be described with reference to the drawings. The following detailed description is configured to aid in a comprehensive understanding of methods, devices and/or systems described herein. However, this is only an example, and the present disclosure is not limited thereto.

Furthermore, in the following detailed description of the present disclosure, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. However, it will be understood that the present disclosure may be practiced without these specific details. In other instances, well-known methods, procedures, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of the present disclosure. Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this inventive concept belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used herein, the singular forms "a" and "an" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises", "comprising", "includes", and "including" when used in this specification, specify the presence of the stated features, integers, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, operations, elements, components, and/or portions thereof.

It will be understood that, although the terms "first", "second", "third", and so on may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section described below could be termed a second element, component, region, layer or section, without departing from the spirit and scope of the present disclosure.

Hereinafter, a direction perpendicular to a ground is defined as a vertical direction. A direction parallel to the ground and perpendicular to the vertical direction is defined as a horizontal direction. A circumferential direction is defined as a virtual circular direction that is formed when an object rotates around the vertical direction at a rotation radius as a length of the horizontal direction.

FIG. 1 to FIG. 4 are perspective views for illustrating an air cleaner according to exemplary embodiments of the present disclosure. Specifically, FIG. 1 is a perspective view for illustrating an overall structure of the air cleaner. FIG. 2 to FIG. 4 are enlarged perspective views of an area A in FIG. 1. In this connection, FIG. 2 is a diagram for illustrating components of a flow adjusting device included in the air cleaner. FIG. 3 and FIG. 4 are diagrams for illustrating a cross-section of the flow adjusting device.

Referring to FIG. 1, an air cleaner 1 according to exemplary embodiments of the present disclosure may include a

blower

10 and 20 configured to inhale air from the outside, and filter the inhaled air and discharge the filtered air, a flow adjusting device 30 disposed on the

blower

10 and 20 and configured to inhale the air discharged from the

blower

10 and 20, and control the discharge direction of the inhaled air, and a guide member 40 disposed between the

blower

10 and 20 and the flow adjusting device 30, wherein one end thereof is connected to the blower 30 and the other end is connected to air the discharge assembly 30, wherein the guide member 40 is configured to induce a state transition of the flow adjusting device 30.

The

blower

10 and 20 includes a first blower 10 configured to inhale, filter and blow air at a relatively low vertical level, and a second blower 20 disposed on the first blower 10 and configured to inhale, filter, and blow air at a relatively high vertical level. The first blower 10 and the second blower 20 may be stacked in the vertical direction, and may be fastened to each other via a variety of manners, such as fitting fastening, rivet fastening, and screw fastening.

The flow adjusting device 30 may be disposed on the second blower 20. The guide member 40 may be configured to be connected to the second blower 20 and the flow adjusting device 30. The guide member 40 and the second blower 20 may be fastened to each other via a variety of methods, such as fitting fastening, rivet fastening, and screw fastening. The guide member 40 and the flow adjusting device 30 may be fastened to each other via various methods such as fitting fastening, rivet fastening, and screw fastening.

In one example, FIG. 1 shows that the

blower

10 and 20 include the first blower 10 and the second blower 20 sequentially stacked along the vertical direction. However, a concept of the present disclosure is not necessarily limited thereto. A blower may include only one blower.

The first blower 10 may include a first casing 100 that defines appearance of the blower, a first filter member 130 disposed in a lower portion of an interior of the first casing 100 to filter air, and a first blow fan 160 disposed in an upper portion of the interior of the first casing 100 to generate air flow. The second blower 20 includes a second casing 200 that defines the appearance, a second filter member 230 disposed in a lower portion of an interior of the second casing 200, and a second blow fan 260 disposed in an upper portion of the interior of the second casing 200 to generate air flow.

In exemplary embodiments, each of the first casing 100 and the second casing 200 may have a truncated conical shape, or a cylinder shape having a diameter that gradually decreases as it extends upwardly.

The first blower 10 may further include a first base 105 disposed in the lower portion of the first blower 10. The first base 105 may be disposed on a ground and configured to support the first blower 10. The first base 105 may include a lower portion configured to contact the ground and an upper portion extending in the vertical direction from the lower portion and at least partially covered by the first casing 100. In one example, although not shown, a first lower inhale hole communicating with the interior of the first blower 10 may be further disposed in a space between an inner wall of the first casing 100 and the upper portion of the first base 105. Accordingly, outside air may be inhaled into the interior of the first blower 10 through the first lower inhale hole.

The second blower 20 may further include a second base 205 disposed in the lower portion of the first blower 20. The second base 105 may be disposed on the first blower 10 and configured to support the second blower 20. The second base 205 may include a lower portion configured to contact the first blower 10 and an upper portion extending in the vertical direction from the lower portion and at least partially covered by the second casing 200. In one example, although not shown, a second lower inhale hole communicating with the interior of the second blower 20 may be disposed in a space between an inner wall of the second casing 100 and the upper portion of the second base 205, Accordingly, outside air may be inhaled into the interior of the second blower 20 through the second lower inhale hole.

In a side wall of the first casing 100, a first inhale hole 110 configured to inhale air from the outside may be defined. The first inhale hole 110 may include a plurality of through-holes passing through at least a portion of the first casing 100. Further, in a side wall of the second casing 200, a second inhale hole 210 configured to inhale air from the outside may be defined. The second inhale hole 210 may include a plurality of through-holes passing through at least a portion of the second casing 100.

The first inhale hole 110 may be configured to have a line shape extending from a bottom to a top of the first casing 100. A plurality of first inhale holes 110 may be defined in the side wall of the first casing 100. The plurality of first inhale holes 110 may be evenly arranged in the circumferential direction along an outer circumferential surface of the first casing 100 to enable the air inhale in any direction around the first casing 100. Further, the second inhale hole 210 may be configured to have a line shape extending from a bottom to a top of the second casing 200. A plurality of second inhale holes 210 may be defined in the side wall of the second casing 200. The plurality of second inhale holes 210 may be evenly arranged in the circumferential direction along the outer circumferential surface of the second casing 100 to enable air inhale in any direction around the second casing 200.

A first discharge hole 120 configured to discharge air to the outside may be defined in the top surface of the first blower 10. The first discharge hole 120 may include a plurality of through-holes passing through at least a portion of the top surface of the first blower 10. Further, a second discharge hole 220 configured to discharge air to the outside may be defined in a top surface of the second blower 20. The second discharge hole 220 may include a plurality of through-holes passing through at least a portion of a top surface of the second blower 20.

The first discharge hole 120 may be configured to have a line shape extending from a distal portion of the top surface of the first blower 10 to a portion adjacent to a central region thereof. The plurality of first discharge holes 120 may be defined in the top surface of the first blower 10. The plurality of first discharge holes 120 may be evenly arranged to surround a portion of the top surface of the first blower 10 other than a portion in which the second base 205 is disposed. Further, the second discharge hole 220 may be configured to have a line shape extending from the distal portion of the top surface of the second blower 20 to a portion adjacent to a central region thereof. The plurality of second discharge holes 220 may defined in the top surface of the second blower 20. The plurality of second discharge holes 220 may be evenly arranged to surround a portion of the top surface of the second blower 20 other than a portion in which the guide member 40 is disposed.

In exemplary embodiments, in the plan view, a collection of the plurality of first discharge holes 120 may form a ring shape covering an outer peripheral region of the top surface of the first blower 10. A collection of the plurality of second discharge holes 220 may form a ring shape covering an outer peripheral region of the top surface of the second blower 20. In one embodiment, the ring shape defined by the collection of the plurality of first discharge holes 110 may have an outer portion having a higher vertical level than an inner portion thereof. The ring shape defined by the collection of the plurality of second discharge holes 210 may have an outer portion having a higher vertical level than an inner portion thereof.

The top surface of the first blower 10 may include an outer peripheral region in which the plurality of first discharge holes 120 are disposed and a central region in which the second base 205 is disposed. The top surface of the second blower 20 may include an outer peripheral region in which the plurality of second discharge holes 220 are disposed and a central region in which the guide member 40 is disposed. In this connection, the central region of the top surface of the first blower 10 may have a lower vertical level than the outer peripheral region thereof. The central region of the top surface of the second blower 20 may have a lower vertical level than the outer peripheral region thereof.

Hereinafter, the top surface of the first blower 10 is defined to refer only to the central region in which the second base 205 is disposed, except the outer peripheral region in which the plurality of first discharge holes 120 are disposed. The top surface of the second blower 20 is defined to refer only to the central region in which the guide member 40 is disposed, except the outer peripheral region in which the plurality of second discharge holes 220 are disposed. In exemplary embodiments, each of the top surface of the first blower 10 and the top surface of the second blower 20 may have a flat surface extending in the horizontal direction.

The flow adjusting device 30 may include a rear casing which forms an appearance and is configured to define a rear surface of the flow adjusting device 30, and which includes an inhale grill 310 configured to inhale air discharged from the

blower

10 and 20. The flow adjusting device 30 may include a front casing 300 fastened to the rear casing and configured to define a front surface of the flow adjusting device 30. The front casing 300 may include a discharge grill 320 configured to discharge air inhaled through the inhale grill 310. The rear casing includes a rear panel 310 defining the rear surface of the flow adjusting device 30, and a side panel 305 extending from the rear panel 310 to the front casing 300 to define a side surface of the flow adjusting device 30. The rear panel 310 of the rear casing 300 may be configured to perform the role of the inhale grill 310. That is, a combination of the side panel 305 and the rear panel 310 may form the rear casing 300.

The guide member 40 may have various structures to induce the state transition of the flow adjusting device 30. For example, in FIG. 1, one end of guide member 40 is connected to the top surface of second blower 20, the other end thereof is connected to the flow adjusting device 30, and the state transition of the flow adjusting device 30 is induced as the other end of the guide member 40 is ascending or descending. However, the concept of the present disclosure is not necessarily limited thereto. That is, the guide member 40 may be controlled to retract into the interior of the

blower

10 and 20 or to extend from the top surface of the

blower

10 and 20. A detailed description thereof will be made later with reference to FIG. 27 to FIG. 34.

In exemplary embodiments, based on the operation of the guide member 40, the flow adjusting device 30 may be oriented in a first position at which the top surface of the flow adjusting device 30 is parallel with the top surface of the second blower 20, may be oriented in a second position in which the top surface of the flow adjusting device 30 has a predefined angle with respect to the top surface of the second blower 20, and may be oriented in a third position in which the top surface of the flow adjusting device 30 is perpendicular to the top surface of the second blower 20.

FIG. 1 shows that the flow adjusting device 30 is oriented in the third position. A detailed description of a configuration in which the flow adjusting device 30 is oriented in the first position and the second position will be described later with reference to FIG. 27 to FIG. 34.

Referring to FIG. 2, the flow adjusting device 30 may include a front casing 300 defining a front surface of the flow adjusting device 30, and a side panel 305 defining a side surface of the flow adjusting device 30 to prevent air from entering the casing from outside, a rear panel 310 that defines a rear surface of the flow adjusting device 30 and performs a role of an inhale grill 310, a blow fan 360 disposed between the front casing 300 and the rear panel 310 to blow inhaled air through the rear panel 310 toward the discharge grill 320, and a third filter member 350 configured to be seated on an inner surface of the rear panel 310 and disposed between the blow fan 360 and the rear panel 310 to filter inhaled air through the inhale grill 310.

A display 500 configured to display operation information of the air cleaner 1 may be disposed on the top surface of the flow adjusting device 30. The flow adjusting device 30 and the display500 may be configured to work together. In exemplary embodiments, the display 500 may be configured to partially or entirely cover a top surface of the flow adjusting device 30.

The top surface of the flow adjusting device 30 and a side wall of the front casing 300 may be configured to be spaced apart from each other. The discharge grill 320 may be disposed in a space between the top surface of the flow adjusting device 30 and the side wall of the front casing 300 to discharge air to the outside. The discharge grill 320 may have a structure surrounding the top surface of the flow adjusting device 30 in the plan view. Accordingly, the air inhale may be executed in any direction around the top surface of the flow adjusting device 30. In exemplary embodiments, one side of the discharge grill 320 may be connected to the top surface of the flow adjusting device 30, while the other side of the discharge grill 320 may be connected to the inner wall of the front casing 300.

In exemplary embodiments, while the flow adjusting device 30 is oriented in the first position, one side of the discharge grill 320 and the other side of the discharge grill 320 may be disposed at different vertical levels. In one embodiment, while the flow adjusting device 30 is oriented in the first position, one side of the discharge grill 320 may be present at a higher level than the other side of the discharge grill 320.

The front casing 300 and the rear casing may be fastened to each other at tops thereof via first hook fastening, and may be fastened to each other at bottoms thereof via second hook fastening.

Specifically, the top portion of the side panel 305 may be configured to include a first hook 333. The top portion of the front casing 300 may be configured to include a first counterpart hook 335. The top portion of the side panel 305 and the top portion of the front casing 300 may be fastened to each other via fastening between the first hook 333 and the first counterpart hook 335. Further, the bottom portion of the side panel 305 may be configured to include a pair of second counterpart hooks 345 symmetrical to each other in the horizontal direction. The bottom portion of the front casing 300 may be configured to include a pair of second hooks 343 disposed at positions corresponding to the second counterpart hooks, respectively. The bottom portion of the side panel 305 and the bottom portion of the front casing 300 may be fastened to each other via fastening between the second counterpart hooks 345 and second hooks 343. In one embodiment, the bottom portion of the side panel 305 may be configured to further include a magnet (not shown). The bottom portion of the front casing 300 may be configured to further include a magnet counterpart (not shown) made of metal. The coupling between the bottom portion of the side panel 305 and the bottom portion of the front casing 300 may be guided via the coupling between the magnet and the magnet counterpart.

Referring to FIG. 3, the third filter member 350 may be disposed on the seat 340 at the boundary between the rear panel 310 and the side panel 305.

The seat 340 may have a protruding shape toward the front casing rather than the rear panel, and may be configured to surround the edge of the rear panel 310.

In exemplary embodiments, the inner surface of the rear panel 310 and the filter member 350 may contact each other, and may be configured to have the same area as each other.

Referring to FIG. 4, the rear casing of the flow adjusting device 30 may be configured to be detachable when the flow adjusting device 30 is oriented in the third position. The filter member 350 may be configured to be detachable from the flow adjusting device 30 when the rear casing is separated from the front casing 300.

Specifically, in a state in which the flow adjusting device 30 is oriented in the third position, that is, in a state in which the top surface of the flow adjusting device 30 is oriented to be perpendicular to the top surface of the second blower 20, the fastening between the first hook 333 and the first counterpart hook 335 is released, such that the top of the side panel 305 and the top of the front casing 300 may be separated from each other. Then, as the fastening between the second counterpart hook 345 and the second hook 343 is released, the bottom portion of the side panel 305 and the bottom portion of the upper casing 300 may be separated from each other. In one example, when the bottom portion of the side panel 305 and the bottom portion of the upper casing 300 further include the magnet and the magnet counterpart, respectively, before the fastening between the second counterpart hook 345 and the second hook 343 is released, the fastening between the magnet and the magnet counterpart is released, such that separation between the bottom portion of the side panel 305 and the bottom portion of the upper casing 300 may be induced.

In exemplary embodiments, the first filter member 130 and the second filter member 230 may be composed of the same filter as each other. The third filter 350 may be composed of a different filter from the first filter member 130 and the second filter member 230. In one embodiment, the first filter member 130 and the second filter member 230 may be composed of HEPA filters, respectively. The third filter member 350 may be embodied as a pre-filter.

As described above, the air discharged from the

blower

10 and 20 after the air is filtered by the first filter member 130 and/or the second filter member 230 passes through the rear panel 310 of the flow adjusting device 30 and is inhaled into the interior of the flow adjusting device 30. A foreign-substance included in the air may be further filtered while passing through the third filter member 350 contacting the inner surface of the rear panel 310. The third blow fan 360 disposed in the interior of the flow adjusting device 30 and the discharge grill 320 disposed in the front casing 300 of the flow adjusting device 30 may blow and discharge air in which the foreign-substance is additionally filtered. Accordingly, the interior of the flow adjusting device 30 may have the foreign-substance in a small amount due to the third filter member 350, such that the cleaning cycle of the interior of the flow adjusting device 30 may be lengthened.

In one example, the rear casing, that is, the side panel 305 and the rear panel 310 may be easily separated from the front casing 300 via releasing of the first hook fastening and the second hook fastening, respectively. Accordingly, the interior cleaning of the flow adjusting device 30 may be effectively performed.

Further, the rear panel 310 serving as an inhale grill 310 to inhale air, and the third filter member 350 seated on the inner surface of the rear panel 310 may be individually washed after the rear casing is separated from the front casing 300. Accordingly, maintenance of the flow adjusting device 30 may be easily performed.

FIG. 5 to FIG. 8 are perspective views, a cross-sectional view, and a side elevation view for illustrating the air cleaner according to exemplary embodiments of the present disclosure. Specifically, FIG. 5 is a perspective view for illustrating the overall structure of the air cleaner. FIG. 6 is an enlarged perspective view of an area B in FIG. 5. FIG. 7 is a cross-sectional view illustrating an inner structure of a second blower and a flow adjusting device included in the air cleaner. FIG. 8 is a side elevation view to illustrate an outer structure of the second blower and the flow adjusting device. In this connection, FIG. 6 is a diagram for illustrating cross sections of the second blower and the flow adjusting device.

The air cleaner as described with reference to FIG. 5 to FIG. 8 is substantially the same or similar to the air cleaner as described with reference to FIG. 1 to FIG. 4. Thus, the same reference numerals are used for the same components. Detailed description of the same components will be omitted.

Referring to FIG. 5, the air cleaner 1 according to exemplary embodiments of the present disclosure may include the sequentially stacked

blowers

10 and 20, the guide member 40, and the flow adjusting device 30. In this connection, the

blower

10 and 20 may include the first blower 10 configured to inhale, filter and blow air at a relatively low vertical level, and the second blower 20 disposed above the first blower 10 and configured to inhale, filter and blow air at a relatively high vertical level.

In a side wall of the first casing 100, a first inhale hole 110 configured to inhale air from the outside may be defined. Further, in a side wall of the second casing 200, a second inhale hole 210 configured to inhale air from the outside may be defined. A first discharge hole 120 configured to discharge air to the outside may be defined in the top surface of the first blower 10. Further, a second discharge hole 220 configured to discharge air to the outside may be defined in a top surface of the second blower 20.

Referring to FIG. 6 to FIG. 8, in a state in which the top surface of the flow adjusting device 30 and the top surface of the second blower 20 are oriented to be parallel with each other, the flow adjusting device 30 and the second blower 20 are spaced apart from each other, such that at least a portion of the air discharged from the second discharge hole 220 flows along the outer side wall of the flow adjusting device 30 and is discharged to the outside through the space between the flow adjusting device 30 and the second blower 20.

blower

10 and 20. The flow adjusting device 30 may include a front casing 300 fastened to the rear casing and configured to define a front surface of the flow adjusting device 30. The front casing 300 may include a discharge grill 320 configured to discharge air inhaled through the inhale grill 310. The flow adjusting device 30 may include a blow fan 360 provided between the front casing 300 and the front casing 300 and configured to generate air flow so that the air inhaled through the inhale grill 310 is discharged through the discharge grill 320. The rear casing includes a rear panel 310 defining the rear surface of the flow adjusting device 30, and a side panel 305 extending from the rear panel 310 to the front casing 300 to define a side surface of the flow adjusting device 30. The rear panel 310 of the rear casing 300 may be configured to perform the role of the inhale grill 310. That is, a combination of the side panel 305 and the rear panel 310 may form the rear casing 300.

In this connection, a portion of the rear casing other than a portion in which the inhale grill 310 is disposed, that is, a portion in which the side panel 305 is disposed may be formed into a shielded structure to limit air movement. Accordingly, the air discharged from the second discharge hole 220 may be inhaled into the interior of the flow adjusting device 30 only through the inhale grill 310.

The rear panel 310 and side panel 305 may be formed integrally with each other. The side panel 305 and the front casing 300 may be configured to be fastened to each other via, for example, hook fastening.

Based on the operation of the guide member 40, the flow adjusting device 30 may be oriented in the first position, the second position and the third position. While the flow adjusting device 30 is oriented in the first position, the side wall of the rear casing may be spaced apart from the side wall of the second blower 20.

In exemplary embodiments, the side wall of the second blower 20, that is, the side wall of the second casing 200, may be configured to have a tilt perpendicular to the rear panel 310. The side panel 305 may be configured to have an inclined slope with respect to the rear panel 310.

In exemplary embodiments, each of a top surface and a bottom surface of the side panel 305 may be configured to have a ring shape. The circumference of the bottom surface of the side panel 305 may be configured to have a smaller size than the circumference of the top surface of the side panel 305.

In exemplary embodiments, an outer side wall of the side panel 305 may be configured to have a curved shape. In one embodiment, while the flow adjusting device 30 is oriented in the first position, the outer side wall of the side panel 305 may be configured to extend away from the second discharge hole 220 as the side panel approaches the front casing 300.

In exemplary embodiments, while the flow adjusting device 30 is oriented in the first position, the second discharge hole 220 may be configured to be partially covered with the rear grill 310 of the flow adjusting device 30. Accordingly, a portion of the air discharged from the second discharge hole 220 may be discharged to the outside along the outer side wall of the side panel 305. The rest of the air discharged from the second discharge hole 220 may be inhaled into the interior of the flow adjusting device 30 through the rear grill 310.

The second blower 20 is configured to be disposed above the second blow fan 260 and may further include a guide member seat 270 configured so that the guide member 40 is seated thereon. The guide member seat 270 may be controlled to rotate clockwise or counterclockwise. Accordingly, the moving direction of the guide member 40 may be freely adjusted along the circumferential direction.

The second blower 20 may further include a protrusion 280 configured to be disposed the second discharge hole 220 and configured to increase a flow rate of air moving along the inner wall of the second casing 200. The protrusion 280 may have a shape protruding from the inner wall of the second casing 200 in the horizontal direction.

In one example, FIG. 6 and FIG. 7 show only a structure of the second blower 20 and does not show a structure of the first blower 10. The first blower 10 may further include a protrusion (not shown) configured to be disposed the first discharge hole 120 and configured to increase a flow rate of air moving along the inner wall of the first casing 100. The protrusion included in the first blower 10 may have a shape protruding from the inner wall of the first casing 100 in the horizontal direction. When each of the first blower 10 and the second blower 20 includes the protrusion, the protrusion included in the first blower 10 may be referred to as a first protrusion, and the protrusion included in the second blower 20 may be referred to as a second protrusion. However, in the following, for convenience of description, it is not specified whether the first blower 10 includes the first protrusion. However, the second protrusion included in the second blower 20 will be referred to as the protrusion 280.

Each of the second blow fan 260 disposed in the interior of the second blower 20 and the third blow fan 360 disposed in the interior of the flow adjusting device 30 may be embodied as a mixed flow fan.

In one example, FIG. 6 and FIG. 7 show only the structure of the second blower 20, and does not show the structure of the first blower 10. However, the first blow fan 16 disposed in the interior of the first blower 10 may be embodied as a mixed flow fan.

As described above, in a state in which the top surface of the flow adjusting device 30 and the top surface of the second blower 20 are oriented horizontally, that is, in the state where the flow adjusting device 30 is oriented in the first position, the side panel 305 of the flow adjusting device 30 and the second discharge hole 220 of the second blower 20 may be spaced apart from each other in the vertical direction. At least a portion of the air discharged from the second discharge hole 220 may be discharged to the outside through a space between the side panel 305 and the second discharge hole 220.

That is, due to a Coandγ effect which is the tendency of a fluid jet to stay attached to a convex surface, at least a portion of the air blown upwards along the vertical direction using the second blow fan 260 may be ejected from a portion adjacent to the inner wall of the second casing 200. Then, the air may be discharged directly through the second discharge hole 220 to the outside while bypassing the flow adjusting device 30. Accordingly, components disposed in the flow adjusting device 30 may not act as unnecessary resistance elements against the air flow. Thus, a velocity of the air discharged from the second blower 20 does not decrease, and a blowing distance may be improved. In one example, when the second blower 20 further includes the protrusion 280, the air velocity of the air discharged from the second blower 20 may increase.

FIG. 9 to FIG. 18 are perspective views, cross-sectional views, top views and side elevation views for illustrating an air cleaner according to exemplary embodiments of the present disclosure. Specifically, FIG. 9, FIG. 11, FIG. 14 and FIG. 18 are perspective views. FIG. 10 and FIG. 17 are cross-sectional views. FIG. 12 and FIG. 15 are top views. FIG. 13 and FIG. 16 are side elevation views. In this connection, FIG. 9 is a perspective view to illustrate the overall structure of the air cleaner. FIG. 10 is an enlarged cross-sectional view of a region C of FIG. 9. FIG. 11 to FIG. 18 are diagrams for illustrating an air passage controller included in the air cleaner.

Since the air cleaner described with reference to FIG. 9 to FIG. 18 is substantially the same or similar to the air cleaner as described with reference to FIG. 1 to FIG. 4, the same reference numerals are used for the same components. Detailed description of the same components will be omitted.

Referring to FIG. 9, the air cleaner 1 according to exemplary embodiments of the present disclosure may include the sequentially stacked

blowers

blower

10 and 20 may include the first blower 10 configured to inhale, filter and blow air at a relatively low vertical level, and the second blower 20 disposed on the first blower 10 and configured to inhale, filter and blow air at a relatively high vertical level.

Referring to FIG. 10, the first blower 10 may further include a first air passage controller 170 disposed on the first blow fan 160 and in the interior of the first casing 100 and configured to control a flow area of air discharged from the first blow fan 160. The first air passage controller 170 may be configured to selectively close a portion of a flow area in which air flows between the first blow fan 160 and the first discharge hole 120, such that the air discharged from the first blow fan 160 is selectively concentrated on a specific area.

Although not shown, the second blower 20 may further include a second air passage controller (not shown) disposed on the second blow fan 260 and in the interior of the second casing 200 and configured to control the flow area of air discharged from the second blow fan 260. The second air passage controller may be configured to selectively close a portion of the flow area where air flows between the second blow fan 260 and the second discharge hole 220, so that the air discharged from the second blow fan 160 is selectively concentrated on a specific area.

FIG. 10 to FIG. 18 shows only the first air passage controller 170 included in the first blower 10 but does not show the second air passage controller included in the second blower 20. However, the second air passage controller may be configured to have a structure substantially the same as or similar to the first air passage controller 170. Therefore, hereinafter, for convenience of description, only the first air passage controller 170 will be described in detail. Detailed description of the second air passage controller included in the second blower 20 will be omitted.

The first air passage controller 170 is configured to be rotatable and is disposed on the first blow fan 160. The first air passage controller 170 may include a first frame 170a configured to have a cylinder shape, and a second frame 170b configured to have a top surface having the same vertical level as a top surface of the first frame 170a, and spaced from the first frame 170a and having a ring shape surrounding a top of the first frame 170a.

Referring to FIG. 11 to FIG. 13, the first air passage controller 170 may include an air passage control panel disposed between the first frame 170a and the second frame 170b. One end of the control panel is fixed to the first frame 170a, the other end thereof is fixed to the second frame 170b. The control panel is configured to partially cover a space between the first frame 170a and the second frame 170b. The first air passage controller 170 may include an air passage control link 180 disposed in the interior of the first frame 170a. The air passage control link 180 may be connected to the other end of the air passage control panel and configured to induce opening and closing of the air passage control panel. A concentrated air passage 190 may be disposed on a portion of a space between the first frame 170a and the second frame 170b which is not covered with the air passage control panel.

Further, the first air passage controller 170 may include a first actuator disposed in the interior of the first frame 170a and configured to drive the ascending and descending of the air passage control link 180. The first air passage controller 170 may further include a second actuator disposed in the interior of the first frame 170a and configured to drive rotation of the first frame 170a. The first actuator and the second actuator may be spaced apart from each other and disposed in the inner space defined in the first frame 170a.

The first actuator may include a first motor 183 for providing power, a first shaft configured to protrude from one end of the first motor 183 and to be rotatable, and a first wheel 184 coupled to the first shaft. On a portion of an inner wall of the air passage control link 180, a first rail 187 extending along the vertical direction may be disposed. The air passage control link 180 may be controlled such that the first wheel 184 is ascending or descending while rotating in an engaged manner with the first rail 187.

The second actuator may include a second motor 173 for providing power, a second shaft configured to protrude from one end of the second motor 173 and to be rotatable, and a second wheel 174 fastened to the second shaft. On a portion of the inner wall of the first casing 100, a second rail 177 extending along a horizontal direction horizontal to the ground may be disposed. The first frame 170a may be controlled to rotate in the circumferential direction along the inner wall of the first casing 100 while the second wheel 174 rotates in engagement with the second rail 177.

The air passage control panel may include a plurality of control panels 175 and a plurality of through-members 171 respectively passing through the control panels 175 and formed integrally with the control panels 175. Each through-member 171 may be configured to extend through the second frame 170b, the control panel 175 and the first frame 170a sequentially along the horizontal direction.

In exemplary embodiments, each of the control panels 175 may have an annulus sector shape in which both top and bottom sides of the trapezoid are rounded. The plurality of control panels 175 may be arranged to partially fill a space between the first frame 170a and the second frame 170b.

The through-member 171 may be configured to extend through the first frame 170a in one horizontal direction, and, then extend on the top surface of the air passage control link 180, and then bend and extending in another horizontal direction different from the one horizontal direction.

In exemplary embodiments, the through-member 171 may be configured to extend through the first frame 170a along a first direction of the horizontal direction, and, then extend on the top surface of the air passage control link 180, and then bend and extending in a second direction of the horizontal direction different from the first direction. In one embodiment, the first direction and the second direction may be orthogonal to each other.

Hereinafter, a portion of the through-member 171 extending along the first direction will be referred to as a first portion. The portion of the through-member 171 extending in the second direction will be referred to as a second portion.

The air passage control link 180 may include a through-fastener 181 configured to protrude from a top surface. One end of the through-member 171 extending from the control panel 175 and passing through the second frame 170b may be fastened to the second frame 170b. The other end of the through-member 171 extending from the control panel 175 and passing through the first frame 170a may pass through the through-fastener 181 and be fastened to the air passage control link 180.

In exemplary embodiments, in the plan view, the air passage control link 180 may have a ring shape surrounded with the inner wall of the first frame 170a. The side wall of the first frame 170a may have a ring shape surrounding the outer peripheral surface of the air passage control link 180. The second frame 170b may have a ring shape spaced apart from the first frame 170a.

The plurality of control panels 175 included in the air passage control panel may be evenly arranged in a space between the first frame 170a and the second frame 170b and in the circumferential direction and along the outer peripheral surface of the first frame 170a. The control panel 175 may not be disposed in a portion of the space between the first frame 170a and the second frame 170b. Accordingly, the concentrated air passage 190 in which the air discharged from the first blow fan 160 may intensively flow may be disposed in the portion of the space as not covered with the control panels 175.

The concentrated air passage 190 may be generated only when the air passage control link 180 is controlled to ascend via the first actuator. When the air passage control link 180 is controlled to descend via the first actuator, the passage 190 may not be generated.

In exemplary embodiments, in a state where the air passage control link 180 has ascended, a top portion of the through-fastener 181 may protrude upwards along the vertical direction beyond the first frame 170a and the second frame 170b.

Referring to FIG. 14 to FIG. 16, the air passage control link 180 may be controlled to descend via the first actuator. Accordingly, the air passage control panel may be opened.

Specifically, when the first wheel 184 of the first actuator is rotated in an engage manner with the first rail 187 disposed on the inner surface of the air passage control link 180 such that the air passage control link 180 is controlled to descend, the through-fastener 181 disposed on the top surface of the air passage control link 180 descends together with the air passage control link 180. A portion of the through-member 171 fastened to the through-fastener 181, that is, the second portion of the through-member 171 that is bent and extends in the second direction moves downward along the vertical direction. The remaining portion of the through-member 171 excluding the second portion of the through-member 171, that is, the first portion extending along the first direction of the through-member 171 may be rotated clockwise or counterclockwise. The control panel 175 fixed to the first portion of the through-member 171 may be rotated together with the through-member 171.

Accordingly, as the plurality of control panels 175 rotate individually, the air passage control panel may be partially opened. The air discharged from the first blow fan 160 may be moved through a specific portion of the space between the first frame 170a and the second frame 170b. In this connection, the specific portion of the space refers to a space in which the concentrated air passage 190 is not disposed.

FIG. 16 shows that in the side view, each of the plurality of control panels 175 is rotated to form an angle not perpendicular to the second frame 170. However, the concept of the present disclosure is not necessarily limited thereto. Each of the plurality of control panels 175 may be rotated to form an angle perpendicular to the second frame 170.

Although not shown in the drawings, the bottom surface of the first frame 170a may be configured to have a first opening and a second opening defined at positions corresponding to the outer peripheral portion of the air passage control link 180 and the lower portion of the first rail 187, respectively. The first opening may refer to a region in which the outer peripheral portion of the air passage control link 180 passes through a bottom surface of the first frame 170a in the vertical direction when the air passage control link 180 descends. The second opening may refer to a region in which the lower portion of the first rail 187 passes through the bottom surface of the first frame 170a in the vertical direction when the air passage control link 180 descends.

In exemplary embodiments, in a state in which the air passage control link 180 has descended, the lower portion of the through-fastener 181 may protrude downward along the vertical direction beyond the bottom surface of the first frame 170a.

Referring to FIG. 17, the first rail 187 may positionally correspond to the first wheel 184. Accordingly, ascending and descending of the air passage control link 180 may be controlled by the first actuator.

Referring to FIG. 18, the second rail 177 may be positioned be in contact with the second wheel 174. Accordingly, rotation of the air passage control link 180 in the circumferential direction may be controlled by the second actuator.

Although not shown, the first frame 170a may include a third opening penetrating the bottom surface of the first frame 170a in the vertical direction. The second shaft fastened to the second actuator and the second wheel 174 may be moved along the circumferential direction and along the third opening. The third opening may be formed to partially pass through the bottom surface of the first frame 170a along the circumferential direction around the central region of the bottom surface of the first frame 170a.

In exemplary embodiments, when the first frame 170a is rotated in one direction via the second actuator, the other end of the air passage control panel fixed to the first frame 170a may be rotated in the one direction. Accordingly, the concentrated air passage 190 may be controlled to rotate in the one direction.

As described above, when the air passage control link 180 has descended via the first actuator, the other end of the through-member 171 fastened to the through-fastener 181 is descended together therewith, such that the control panel 175 integrally formed with the through-member 171 may be rotated in one direction and thus the air passage control panel may be controlled to be open. Accordingly, when the air passage control link 180 is controlled to ascend, a portion of the flow area in which air flows between the first blow fan 160 and the first discharge hole 120 may be selectively closed. Accordingly, the air discharged from the first blow fan 160 may be controlled to be selectively blown to a specific area.

Conversely, when the air passage control link 180 ascends via the first actuator, the other end of the through-member 171 fastened to the through-fastener 181 ascends together therewith and thus the control panel 175 integrally formed with the through-member 171 may be rotated in the opposite direction to one direction, and thus the air passage control panel may be controlled to be closed. Accordingly, when the air passage control link 180 is controlled to descend, an entire of the flow area in which air flows between the first blow fan 160 and the first discharge hole 120 may be opened. Accordingly, the air discharged from the first blow fan 160 may be controlled to be blown evenly to all areas.

Further, the air passage control panel 180 may be rotated in the circumferential direction and along the inner wall of the first casing 100 via the second actuator. Accordingly, the concentrated air passage 190 may be controlled to rotate in the circumferential direction.

FIG. 19 to FIG. 26 are perspective views and cross-sectional views for illustrating an air cleaner according to exemplary embodiments of the present disclosure. Specifically, FIG. 19 and FIG. 20 are a perspective view and a cross-sectional view to illustrate the overall structure of the air cleaner. FIG. 21, FIG. 22 and FIG. 23 are drawings for illustrating the first filter member and the first foreign-substance cleaner included in the air cleaner. FIG. 24, FIG. 25 and FIG. 26 are enlarged perspective views of an area D in FIG. 19, respectively.

Since the air cleaner as described with reference to FIG. 19 to FIG. 26 is substantially the same or similar to the air cleaner as described with reference to FIG. 1 to FIG. 4, the same reference numerals are used for the same components, and detailed description of the same components will be omitted.

Referring to FIG. 19 and FIG. 20, the air cleaner 1 according to exemplary embodiments of the present disclosure may include the sequentially stacked

blowers

blower

The first blower 10 further includes a third actuator positioned below the first filter member 130 and configured to rotate the first filter member 130, and a first foreign-substance cleaner configured to at least partially contact an outer side wall of the first filter member 130. The first filter member 130 may be rotated via the third actuator. The foreign-substance present on the outer side wall of the first filter member 130 may be removed when the outer side wall of the first filter member 130 contacts the first foreign-substance cleaner.

Although not shown, the second blower 20 further includes a fourth actuator positioned below the second filter member 230 and configured to rotate the second filter member 230, and a second foreign-substance cleaner configured to at least partially contact an outer side wall of the second filter member 230. The second filter member 230 may be rotated via the fourth actuator. The foreign-substance present on the outer side wall of the second filter member 230 may be removed when the outer side wall of the second filter member 230 contacts the second foreign-substance cleaner.

The fourth actuator and the second foreign-substance cleaner included in the second blower 20 may be configured to have substantially the same or similar structures to the third actuator and the first foreign-substance cleaner included in the first blower 10, respectively. Therefore, hereinafter, for convenience of description, only the third actuator and the first foreign-substance cleaner included in the first blower 10 will be described in detail. Detailed description of the fourth actuator and the second foreign-substance cleaner included in the second blower 20 will be omitted.

Referring to FIG. 21 to 23, the first foreign-substance cleaner may include a first dust-collection panel 140 configured to form a portion of the side wall of the first casing 100, a first foreign-substance cleaning module 145 which is fixed to the inner wall of the first dust-collection panel 140 and is configured to contact the outer side wall of the first filter member 130, a first through-hole 149a which is configured to pass through the side wall of the first dust-collection panel 140, and a door 155 disposed on the outer side wall of the casing to open or close the first through-hole 149a.

The third actuator may include a third motor 131 for providing power, a third shaft configured to protrude from one end of the third motor 131 and be rotatable, and a third wheel 132 fastened to the third shaft.

Between the first filter member 130 and the third actuator, a first lower plate 125 may be disposed below the first filter member 130 and may be configured for rotating the first filter member 130. A third rail 133 extending along the circumferential direction around a central region of the first lower plate 125 may be disposed below the first lower plate 125. A third wheel 132 may be configured to rotate in engagement with the third rail 133. Accordingly, the first filter member 130 may be controlled to rotate in the circumferential direction and along the inner wall of the first lower plate 125 via the third actuator.

Referring to FIG. 20 and FIG. 21 together, a first upper plate may be formed on the first filter member 130. Between the first filter member 130 and the first upper plate, a first bearing 135 configured to reduce the frictional force generated when the first filter member 130 rotates may be disposed.

As the first filter member 130 is rotated via the third actuator, the foreign-substance attached to the outer side wall of the first filter member 130 is detached therefrom by the first foreign-substance cleaning module 145 and then goes out through the first through-hole 149a. In one embodiment, the first through-hole 149a may be disposed at a central region of the side wall of the first dust-collection panel 140.

The first foreign-substance cleaning module 145 may include a first foreign-substance cleaning member 145a extending in the vertical direction, and configured such that both ends thereof are fixed to a top and a bottom of the inner wall of the first dust-collection panel 140, respectively, and a second foreign-substance cleaning member 145b extending in the vertical direction and fixed to the first foreign-substance cleaning member 145a. The first foreign-substance cleaning member 145a and the second foreign-substance cleaning member 145b may be sequentially stacked in a direction from the first dust-collection panel 140 toward the first filter member 130. In this connection, the first foreign-substance cleaning member 145a may be disposed adjacent to the outer side wall of the first filter member 130. The second foreign-substance cleaning member 145b may contact the outer side wall of the first filter member 130.

In exemplary embodiments, the first foreign-substance cleaning member 145a may be made of a rubber material to remove a relatively large foreign-substance. The second foreign-substance cleaning member 145b may be embodied as a brush to remove a relatively small foreign-substance.

The inner wall of the first dust-collection panel 140 may have a concave shape toward the first through-hole 149a. The first foreign-substance cleaning module 145 may be configured to extend across the inner wall of the first dust-collection panel 140 and along the vertical direction.

An empty space between the first filter member 130 and the inner wall of the first dust-collection panel 140, except for a region where the first foreign-substance cleaning module 145 is disposed may act as an air passage through which foreign-substances removed from the outer side wall of the first filter member 130 by the first foreign-substance cleaning module 145 may move.

In one example, the first casing 100 may further include a second through-hole 149b configured to pass through the side wall of the first casing 100 and positionally corresponding to a position in which the first through-hole 149a is disposed. A combination of the first through-hole 149a and the second through-hole 149b may define the first through-hole 149. The second through-hole 149b may have a larger diameter than that of the first through-hole 149a.

A shock-absorbing member 150 may be disposed between the first through-hole 149a and the second through-hole 149b. The shock-absorbing member 150 may be made of an elastic rubber material in order to mitigate the shock generated when an external foreign-substance cleaner approaches the first through-hole 149.

In exemplary embodiments, the shock-absorbing member 150 may be configured to have an annular shape in which a central portion is hollow. The annular shape may have a diameter smaller than that of the second through-hole 149b and larger than or equal to that of the first through-hole 149a.

In one example, the shock-absorbing member 150 may include a detection sensor capable of recognizing the external foreign-substance cleaner. When the detection sensor detects the external foreign-substance cleaner, the third actuator may be controlled to be activated.

FIG. 22 does not show the third wheel 132 to show the inner wall of the third rail 133. FIG. 23 does not show the third motor 131 to avoid overlapping explanations. However, those of ordinary skill in the art to which the present disclosure belongs may easily understand that the third wheel 132 is engaged to a top of the third motor 131 and rotates along the third rail 133 disposed between the first lower plate125 and the third motor 131.

Referring to FIG. 24 to FIG. 26, a first door 155 for opening or closing the first through-hole 149a and the second through-hole 149b may be disposed on the outer side wall of the first casing 100. The first door 155 may be configured to move in an up and down direction or a left and right direction on and along the outer side wall of the first casing 100.

FIG. 24 to FIG. 26 shows that the first door 155 is configured to be movable up and down along the vertical direction. More specifically, FIG. 24 shows that the first door 155 is closed. FIG. 25 shows that the first door 155 is open. FIG. 26 shows cleaning of the first filter member 130 disposed in the interior of the first casing 100 using the external foreign-substance cleaner when the first door 155 is opened.

In one embodiment, the third actuator may be activated only when the first door 155 is open. When the first door 155 is a closed state, the third actuator may be deactivated.

As described above, the first filter member 130 disposed in the interior of the first blower 10 may be controlled to rotate in the circumferential direction via the third actuator disposed below the first filter member 130. The foreign-substance attached to the outer side wall of the first filter member 130 may be detached therefrom using the first foreign-substance cleaning module 145 configured to at least partially contact the outer side wall of the first filter member 130. Thereafter, foreign-substances detached from the first filter member 130 may be removed through the first through-hole 149 using the external foreign-substance cleaner provided outside the first blower 10. Therefore, a user of the air cleaner 1 may easily clean the first filter member 130 disposed in the interior of the first blower 10 without detaching the same.

FIG. 27 to FIG. 34 are perspective views, cross-sectional views and rear views for illustrating the air cleaner according to exemplary embodiments of the present disclosure. Specifically, FIG. 27 is a perspective view for illustrating the overall structure of the air cleaner. FIG. 28 to 34 are enlarged cross-sectional views and enlarged rear views of an area E in FIG. 27. In this connection, FIG. 28 to 34 are diagrams for illustrating the flow adjusting device and the guide member included in the air cleaner.

Since the air cleaner described with reference to FIG. 27 to FIG. 34 is substantially the same or similar to the air cleaner as described with reference to FIG. 1 to FIG. 4, the same reference numerals are used for the same components, and detailed description of the same components will be omitted.

Referring to FIG. 27, the air cleaner 1 according to exemplary embodiments of the present disclosure may include the sequentially stacked

blowers

blower

The flow adjusting device 30 may be disposed on the second blower 20, and may be configured to inhale the air discharged from the second blower 20 and control the discharge direction of the inhaled air.

The guide member 40 may be configured such that one end thereof is introduced into the interior of the second blower 20, and the other end thereof is connected to the flow adjusting device 30. The guide member 40 may be controlled to retract into the interior of the second blower 20 or extend from the top surface of the second blower 20 to induce the state transition of the flow adjusting device 30. In exemplary embodiments, an angle formed between the top surface of the flow adjusting device 30 and the top surface of the second blower 20 may increase or decrease depending on an extent to which the guide member 40 extends from the top surface of the second blower 20.

According to the operation of the guide member 40, the orientation of the flow adjusting device 30 may be switched to between the first position in which the top surface of the flow adjusting device 30 is parallel with the top surface of the second blower 20, the second position in which the top surface of the flow adjusting device 30 is oriented to form a predefined angle with respect to the top surface of the second blower 20, and a third position in which the top surface of the flow adjusting device 30 is perpendicular to the top surface of the second blower 20.

FIG. 28 and FIG. 29 show that the flow adjusting device 30 is oriented in the first position.

Referring to FIG. 28 and FIG. 29, the guide member 40 may include an outer housing 400 defining the appearance and having one end configured to enter the interior of the second blower 20, and configured to extend from the top surface of the second blower 20, and an inner housing 405 having one end introduced into the interior of the outer housing 400 and the other connected to the flow adjusting device 30. The other end of the inner housing 405 is configured to extend from the other end of the outer housing 400 opposite to the one end of the outer housing 400 received in the interior of the second blower 20. The outer housing 400 may have a structure partially surrounding the inner housing 405.

In exemplary embodiments, the outer housing 400 may have a generally curved pillar shape. The inner housing 405 may have a pillar shape having a size relatively smaller than the pillar shape of the outer housing 400. In this connection, the pillar shape of the outer housing 400 is configured such that a top surface thereof is opened. The inner housing 405 may be introduced into the interior of the outer housing 400 or may extend from the open top surface of the outer housing 400.

The angle defined between the top surface of the flow adjusting device 30 and the top surface of the second blower 20 may be increased or decreased primarily depending on the extent to which the outer housing 400 extends from the second blower 20. The angle defined between the top surface of the flow adjusting device 30 and the top surface of the second blower 20 may be further increased or decreased secondarily depending on an extent to which the inner housing 405 extends from the outer housing 400.

In exemplary embodiments, while the flow adjusting device 30 is oriented in the first position, the outer housing 400 may be introduced into the interior of the second blower 20 and may not be exposed to the outside.

The guide member 40 includes a fourth actuator 420 disposed in the interior of the second blower 20 and adjacent to the outer surface of the outer housing 400, and a fifth actuator 430 disposed in the interior of the inner housing 405 and adjacent to the inner surface of the outer housing 400.

The fourth actuator 420 may include a fourth motor 421 for providing power, a fourth shaft 423 configured to protrude from one end of the fourth motor 421 and be rotatable, and a fourth wheel 425 fastened to the fourth shaft 423. The fifth actuator 430 may include a fifth motor 431 for providing power, a fifth shaft 433 configured to protrude from one end of the fifth motor 431 and to be rotatable, and a fifth wheel 435 fastened to the fifth shaft 433.

Referring to FIG. 29 and FIG. 34 together, the outer housing 400 may include a first guide rail 410a configured to extend across the outer surface of the outer housing 400 in the longitudinal direction thereof, and a second guide rail 410b configured to extend across the inner surface of the outer housing 400 in the longitudinal direction. Each of the first guide rail 410a and the second guide rail 410b may extend across the central region in the longitudinal direction of the outer housing 400. The first guide rail 410a and the second guide rail 410b may surface each other. The first guide rail 410a and the second guide rail 410b may be integrally formed with each other to form the guide rail 410.

Referring to FIG. 29 and FIG. 34 together, the inner housing 405 may include a trench 407 configured to extend across the outer surface of the inner housing 405 in the longitudinal direction, and a fourth opening oriented to pass through a portion of the trench 407.

The trench 407 may have a recessed shape into the outer surface of the inner housing. The trench may positionally correspond to the second guide rail 410b. That is, the second guide rail 410b formed on the inner surface of the outer housing 400 may have a shape protruding toward the outer surface of the inner housing 405. In this connection, the trench 407 has a recessed shape into the outer surface of the inner housing 40. Thus, the inner housing 405 may extend from the outer housing 400 without being caught by the second guide rail 410b.

The fourth opening may have various shapes such as a polygonal shape and/or a circular shape. The fourth opening may positionally correspond to the fourth wheel 435 of the fourth actuator 430. That is, the fourth wheel 435 may be engaged with the second guide rail 410b formed on the inner surface of the outer housing 400 through the fourth opening. As the fourth wheel 435 rotates, the inner housing 405 may retract into or extend from the outer housing 400.

In exemplary embodiments, the fourth opening may be closer to one end of the inner housing 405 introduced into the interior of the outer housing 400 than to the other end of the inner housing 405 connected to the flow adjusting device 30.

The fourth wheel 425 disposed in the interior of the second blower 20 may be configured to rotate in engagement with the first guide rail 410a. The fifth wheel 435 disposed in the interior of the inner housing 405 may be configured to rotate in engagement with the second guide rail 410b. In exemplary embodiments, the fifth wheel 435 may be closer to one end of the inner housing 405 introduced into the interior of the outer housing 400 than to the other end of the inner housing 405 connected to the flow adjusting device 30.

FIG. 30 and FIG. 31 show that the flow adjusting device 30 is oriented in the second position.

Referring to FIG. 30 and FIG. 31, the vertical orientation of the flow adjusting device 30 may be switched to between the first position to the second position based on the rotational movement of the fourth wheel 425 included in the fourth actuator 420. In this case, the fifth wheel 435 included in the fifth actuator 430 may be controlled not to rotate.

Specifically, the outer housing 400 may be controlled to retract into the interior of the second blower 20 or to extend from the top surface of the second blower 20 via the rotational motion of the fourth wheel 425. Accordingly, the vertical orientation of the flow adjusting device 30 may be switched to between the first position to the second position.

That is, as the fourth wheel 425 rotates in one direction while engaging the first guide rail 410a, the outer housing 400 may extend from the top surface of the second blower 20. Thus, the flow adjusting device 30 may ascend. Conversely, as the fourth wheel 425 engages the first guide rail 410a and rotates in the opposite direction to the one direction, the outer housing 400 may be introduced into the interior of the second blower 20. In this case, the flow adjusting device 30 may descend.

In exemplary embodiments, the fifth wheel 435 may be controlled not to rotate until the flow adjusting device 30 is oriented in the second position, and may be controlled to rotate only after the flow adjusting device 30 is oriented in the second position.

In exemplary embodiments, while the flow adjusting device 30 is oriented in the second position, the outer housing 400 may at least partially extend from the second blower 20 and be exposed to the outside, but the inner housing 405 retracts into the interior of the outer housing 400 and is not be exposed to the outside.

FIG. 32 to 34 show that the flow adjusting device 30 is oriented in the third position.

Referring to FIG. 32 to FIG. 34, the flow adjusting device 30 may be oriented in the second position or the third position based on the rotational movement of the fifth wheel 435 included in the fifth actuator 430.

Specifically, the inner housing 405 may be controlled to retract into or extend from the outer housing 400 via the rotational motion of the fifth wheel 435. Accordingly, the flow adjusting device 30 may be oriented in the second position or the third position.

That is, as the fifth wheel 435 is engaged with the second guide rail 410b through the fourth opening and then rotates in the one direction, the inner housing 405 may extend from the other end of the outer housing 400. In this case, the flow adjusting device 30 may ascend. On the contrary, as the fifth wheel 435 is engaged with the second guide rail 410b through the fourth opening and then rotates in the opposite direction to the one direction, the inner housing 405 may be introduced into the interior of the outer housing 400. In this case, the flow adjusting device 30 may descend.

In exemplary embodiments, while the flow adjusting device 30 is oriented in the third position, the outer housing 400 may extend from the second blower 20 and be exposed to the outside. The inner housing 405 may extend from the outer housing 400 and may be exposed to the outside.

As described above, the air cleaner 1 according to exemplary embodiments of the present disclosure may include the sequentially stacked

blowers

10 and 20, the guide member 40 and the flow adjusting device 30. The guide member 40 may include the outer housing 400 configured to retract into the interior of the

blower

10 and 20, or to extend from the top surface of the

blower

10 and 20, and the inner housing 405 configured to retract into the interior of the outer housing 400 or to extend from the outer housing 400.

In this connection, the angle formed between the top surface of the flow adjusting device 30 and the top surface of the

blowers

10 and 20 may increase primarily as the outer housing 400 extends from the blower 20. Then, the angle may further increase as the inner housing 405 extends from the outer housing 400.

Therefore, the top surface of the flow adjusting device 30 may be oriented to be perpendicular to the top surface of the

blower

10 and 20. Thus, the air discharged from the blower 20 is blown farther away through the flow adjusting device 30.

Although various embodiments of the present disclosure have been described above in detail, those having ordinary knowledge in the technical field to which the present disclosure belongs may realize that various modifications may be made to the above-described embodiment as long as they do not depart from the scope of the present disclosure. Therefore, the scope of rights of the present disclosure should not be limited to the described embodiment and should be determined not only by the claims to be described later but also by equivalents thereto.

Claims

An air cleaner comprising:

a blower including:

a casing for defining appearance of the blower;

an inhale hole defined in a side wall of the casing to inhale air from the outside;

a filter member disposed inside the casing to filter the inhaled air;

a blow fan disposed inside the casing and on a top surface of the filter member to discharge the filtered air;

an air passage controller disposed on the blow fan and inside the casing and configured to adjust a flow area of the air discharged from the blow fan; and

a discharge hole defined on the air passage controller to pass through the casing and configured to discharge the air discharged from the blow fan;

a flow adjusting device disposed on the blower and configured to change a discharge direction of the air discharged from the blower; and

a guide member disposed between the blower and the flow adjusting device, wherein one end thereof is connected to the blower and the other end thereof is connected to the flow adjusting device, wherein the guide member is configured to induce a state transition of the flow adjusting device,

wherein the air passage controller is configured to selectively close a portion of a flow area where the air flows between the blow fan and the discharge hole, such that the air discharged from the blow fan is selectively concentrated in a specific region.
The air cleaner of claim 1, wherein the air passage controller includes:

a first frame rotatably disposed on the blow fan and having a cylinder shape;

a second frame configured to have a top surface having the same vertical level as a top surface of the first frame, and spaced from the first frame and having a ring shape surrounding a top of the first frame;

an air passage control panel disposed between the first frame and the second frame, wherein one end of the air passage control panel is fixed to the first frame, and the other end thereof is fixed to the second frame, wherein the control panel is configured to partially cover a space between the first frame and the second frame; and

an air passage control link disposed inside the first frame, wherein the air passage control link is connected to the other end of the air passage control panel and configured to induce opening and closing of the air passage control panel,

wherein a concentrated air passage is disposed on a portion of a space between the first frame and the second frame not covered with the air passage control panel.
The air cleaner of claim 2, wherein the air passage controller further includes:

a first actuator disposed inside the first frame and configured to drive ascending and descending of the air passage control link; and

a second actuator disposed inside the first frame and configured to drive rotation of the first frame,

wherein the first actuator and the second actuator are spaced apart from each other.
The air cleaner of claim 3, wherein the first actuator includes:

a first motor for providing power;

a first shaft configured to protrude from one end of the first motor and to be rotatable; and

a first wheel coupled to the first shaft,

wherein a first rail extending along a vertical direction perpendicular to the ground is disposed on a portion of an inner wall of the air passage control link,

wherein as the first wheel rotates in an engaged manner with the first rail, the ascending and the descending of the air passage control link are controlled.
The air cleaner of claim 4, wherein a bottom surface of the first frame is configured to have a first opening and a second opening defined at positions corresponding to an outer peripheral portion of the air passage control link and a lower portion of the first rail, respectively,

wherein the first opening refers to a region where the outer peripheral portion of the air passage control link passes through the bottom surface of the first frame in the vertical direction when the air passage control link descends,

wherein the second opening refers to a region where the lower portion of the first rail passes through the bottom surface of the first frame in the vertical direction when the air passage control link descends.
The air cleaner of claim 4, wherein the air passage control panel includes a plurality of control panels and a plurality of through-members respectively passing through the control panels and formed integrally with the control panels,

wherein each through-member is configured to extend through the second frame, each control panel, and the first frame sequentially along a first direction parallel to the ground.
The air cleaner of claim 6, wherein each through-member is configured to pass through the first frame along the first direction, then extend on a top surface of the air passage control link, and then bend and extend along a second direction different from the first direction.
The air cleaner of claim 7, wherein the first direction and the second direction are orthogonal to each other.
The air cleaner of claim 7, wherein the air passage control link includes a plurality of through-fasteners configured to protrude from the top surface thereof,

wherein one end of each through-member extending from each control panel and passing through the second frame is fastened to the second frame,

wherein the other end of each through-member extending from each control panel and passing through the first frame is fastened to each through-fastener.
The air cleaner of claim 9, wherein when the air passage control link descends by the first actuator, the other end of each through-member descends together, such that each control panel integrally formed with each through-member is rotated in one direction, and thus the air passage control panel is controlled to be open,

wherein when the air passage control link ascends by the first actuator, the other end of each through-member ascends together, such that each control panel integrally formed with the through-member is rotated in the opposite direction to said one direction, and thus the air passage control panel is controlled to be closed.
The air cleaner of claim 6, wherein each of the control panels has an annulus sector shape of a trapezoid with round top and bottom sides.
The air cleaner of claim 11, wherein the control panels are arranged to partially cover the space between the first frame and the second frame.
The air cleaner of claim 3, wherein the second actuator includes:

a second motor for providing power;

a second shaft configured to protrude from one end of the second motor and to be rotatable; and

a second wheel coupled to the second shaft,

wherein a second rail extending along a horizontal direction horizontal to the ground is disposed on a portion of an inner wall of the casing of the blower,

wherein as the second wheel rotates in an engaged manner with the second rail, the rotation of the first frame is controlled.
The air cleaner of claim 13, wherein when the first frame is rotated in one direction by the second actuator, the other end of the air passage control panel fixed to the first frame is rotated in said one direction, and thus, the concentrated air passage is also controlled to rotate in said one direction.
The air cleaner of claim 2, wherein the air passage control link has a ring shape surrounded with an inner wall of the first frame in the plan view.
The air cleaner of claim 1, wherein the blower includes a first blower configured to filter and blow air at a relatively low vertical level, and a second blower configured to filter and blow air at a relatively high vertical level, wherein the first blower and the second blower are sequentially stacked in a vertical direction perpendicular to the ground,

wherein the first blower includes a first casing for defining appearance of the first blower, a first filter member disposed in a lower portion of an interior of the first casing to filter the air, and a first blow fan disposed in an upper portion of the interior of the first casing to generate air flow,

wherein the second blower includes a second casing for defining appearance of the second blower, a second filter member disposed in a lower portion of an interior of the second casing to filter the air, and a second blow fan disposed in an upper portion of the interior of the second casing to generate air flow,

wherein the air passage controller is disposed in at least one of the first blower and the second blower.
The air cleaner of claim 16, wherein the air passage controller is composed of a first air passage controller and a second air passage controller,

wherein the first air passage controller is disposed inside the first blower, and

wherein the second air passage controller is disposed inside the second blower.
An air cleaner comprising:

a blower including:

a casing for defining appearance of the blower;

an inhale hole defined in a side wall of the casing to inhale air from the outside;

a filter member disposed inside the casing to filter the inhaled air;

a blow fan disposed inside the casing and on a top surface of the filter member to discharge the filtered air;

an air passage controller disposed on the blow fan and inside the casing and configured to adjust a flow area of the air discharged from the blow fan, the air passage controller including a first frame rotatably disposed on the blow fan and having a cylinder shape and a second frame having a ring shape surrounding at least a portion of the first frame; and

a discharge hole defined on the air passage controller to pass through the casing and configured to discharge the air discharged from the blow fan; and

a flow adjusting device disposed on the blower and configured to change a discharge direction of the air discharged from the blower;

wherein the air passage controller further includes an air passage control panel disposed between the first frame and the second frame, and configured to partially cover a space between the first frame and the second frame; and

wherein a concentrated air passage is disposed on a portion of a space between the first frame and the second frame not covered with the air passage control panel.
The air cleaner of claim 18, wherein the air passage controller further includes an air passage control link disposed inside the first frame, and

wherein the air passage control link is connected to the other end of the air passage control panel and configured to induce opening and closing of the air passage control panel.
The air cleaner of claim 19, wherein the air passage controller further includes a first actuator disposed inside the first frame and configured to drive ascending and descending of the air passage control link, and a second actuator disposed inside the first frame and configured to drive rotation of the first frame,

wherein the air passage control panel is controlled to be open when the air passage control link descends by the first actuator, and

wherein the air passage control panel is controlled to be closed when the air passage control link ascends by the first actuator.