KR101795938B1 - Air cleaning apparatus - Google Patents

Abstract

An embodiment of the present invention relates to an air purifier. The air purifier of the embodiment of the present invention comprises a housing suction channel formed between the outer surface of a fan housing and the inner surface of a case, wherein the width of the housing suction channel is configured to get wider based on a moving direction of air. The purpose of the present invention is to provide an air purifier capable of increasing a suction amount of air sucked into the air purifier. In particular, a suction channel extending in a circumferential direction of the air purifier into the inside of the air purifier and a suction channel introduced through the upper part and the lower part of the air purifier are disposed to enable the air purifier to sufficiently suck surrounding air while an indoor user sits or stands.

Description

[0001]

The present invention relates to an air purifier.

The air purifier is understood to be an apparatus for sucking contaminated air to purify it, and then discharging the purified air. For example, the air cleaner may include a blowing device for introducing outside air into the interior of the air cleaner, and a filter capable of filtering dust and germs in the air.

Generally, an air purifier is configured to purify an interior space such as a home or office. According to the conventional air purifier, its capacity is limited, and there is a problem that purification of air in the entire indoor space is limited. Accordingly, the air around the air cleaner can be cleaned, while the air in the space far from the air cleaner is difficult to clean.

In order to solve this problem, there has been an effort to improve the performance of the fan provided in the air purifier. However, as the amount of air blown from the fan increases, the noise generated from the fan increases, thereby decreasing the reliability of the product.

Consequently, due to the limited capacity of the air cleaner, the user has to clean the air in the desired space while moving the air cleaner.

Regarding conventional air purifiers, the Applicant has disclosed the following prior art documents.

1. Public number (public date): KR10-2012-0071992 (July 3, 2012)

2. Title of the invention:

According to the above prior art, the main body of the air cleaner is provided with an air purifying part such as a fan and a filter inside a case having a substantially rectangular parallelepiped shape. The air intake port is formed in the side portion and the lower portion of the main body of the air cleaner, and the air outlet port is formed in the upper portion of the main body.

According to such a constitution, contaminated air is sucked from the air cleaner in a limited direction, that is, from the side and the lower side, so that the suction capacity is reduced. Further, the corner portion of the case having a rectangular parallelepiped shape acts as a structural resistance which hinders the suction of air.

In addition, since the purified air inside the air cleaner is discharged only in one direction, that is, upward, the air around the air cleaner can be purified, but the purified air can not flow from the air cleaner to a space far from the air cleaner, The air cleaning function is limited.

Further, since only one blowing fan is provided inside the main body of the air cleaner, there is a problem that the blowing capacity is limited.

An object of the present invention is to provide an air cleaner capable of improving the suction capacity of the air sucked into the air cleaner in order to solve the above problems.

Particularly, a suction flow path from the circumferential direction of the air purifier to the inside of the air purifier and a suction flow path through the upper and lower portions of the air purifier are included, so that even if the inner chamber is sitting or standing, And an object thereof is to provide an air purifier.

It is another object of the present invention to provide an air cleaner that improves the position of a suction portion formed in a case and increases the amount of air sucked through the suction portion.

It is another object of the present invention to provide an air cleaner which improves the shape of a fan housing for accommodating a fan of an air cleaner and allows the air sucked through the suction unit to flow easily to the filter member. In particular, it is an object of the present invention to provide an air purifier that improves the shape of the fan housing so that the air flow toward the filter member can be made smooth so that the size of the air flow path from the suction unit toward the filter member can gradually increase. .

It is also an object of the present invention to provide an air cleaner which improves the structure of the case, facilitates separation of the case, and allows easy access to the internal components of the air cleaner.

It is also an object of the present invention to provide an air cleaner that allows air discharged from an air cleaner to be discharged in various directions and reach a long distance. In particular, it is an object of the present invention to provide an air cleaner capable of easily discharging air toward the peripheral space even when the inside air chamber is seated or standing with the discharge air stream being easily generated upwardly, forwardly and laterally with respect to the air cleaner do.

Another object of the present invention is to provide an air cleaner which can easily guide the air discharged from the air cleaner to the outside of the air cleaner and prevent the discharged air from flowing back into the air cleaner. In particular, it is an object of the present invention to provide an air cleaner capable of preventing the air discharged from the first air blowing device from flowing back into the second air blowing device.

Another object of the present invention is to provide an air cleaner having increased air flow capacity.

Another object of the present invention is to provide an air cleaner provided with an air guide device so that the air passing through the centrifugal fan can easily flow upward toward the discharge part when the centrifugal fan is used to increase the ventilation capacity .

It is also an object of the present invention to provide an air cleaner that improves the filter's purifying ability and facilitates replacement of the filter.

Another object of the present invention is to provide an air cleaner in which a filter can be easily installed without providing a separate installation space for installing the filter inside the air cleaner.

The air cleaner according to the present embodiment includes a housing suction passage formed between the outer surface of the fan housing and the inner surface of the case, and the width of the housing suction passage is configured to be larger with reference to the air flow direction.

The housing suction passage guides the air sucked through the suction portion of the case to the filter member.

The housing suction passage includes a first inlet portion having a first width and a second inlet portion having a second width larger than the first width of the first inlet portion.

The fan housing includes a first body having a first set diameter and a third body having a second set diameter smaller than the first set diameter.

The fan housing further includes a second body extending from the first body toward the third body so as to have a reduced diameter.

The fan housing is installed above the filter member.

Air sucked through the suction portion passes through the filter member in a radial direction and flows upward toward the fan housing.

The suction portion includes a lower suction portion formed at a height corresponding to the filter member.

The suction portion further includes an upper suction portion disposed above the filter member.

The housing suction passage communicates with the upper suction portion.

And a filter frame supporting the filter member and coupled to the lower side of the fan housing.

The filter member has a cylindrical shape and is slidingly coupled radially toward the filter frame.

In the fan housing, at least a part of the third body is formed by being cut, and a first cut portion supporting the filter frame is included.

And a sensor mounting portion provided on the filter frame and provided with a sensor device.

And a second incision part provided in the fan housing and supporting the sensor mounting part.

The filter frame includes a frame inner wall; A frame outer wall surrounding the frame inner wall; And a housing insertion portion formed between the inner circumferential surface of the frame outer wall and the outer circumferential surface of the frame inner wall.

At least a portion of the fan housing is inserted into the housing insertion portion.

The suction portion is formed in a circumferential direction along an outer circumferential surface of the case.

The suction unit guides the suction of air in the direction of 360 degrees with reference to the vertical center line passing through the inner center of the case.

The filter frame includes a first frame forming a lower portion of the filter frame, a second frame forming an upper portion of the filter frame, and a first filter supporting portion extending upward from the first frame toward the second frame do.

The mounting space of the filter member is defined by the first and second frames and the first filter support portion.

A locking protrusion protruding radially from an inner circumferential surface of the case, and a locking protrusion formed on the first frame and coupled to the locking protrusion.

The case includes a first case having a first suction portion and a second case provided on the upper side of the first case and having a second suction portion.

The fan housing includes a first fan housing installed inside the first housing; And a second fan housing installed inside the second case.

The housing suction passage is formed inside the first case and the second case, respectively.

And a suction grille coupled to an upper side of the base and supporting a lower portion of the case.

And a suction hole provided in the suction grille for guiding suction of air into the case.

And a base suction part formed in a space between the base and the suction grille and guiding air to the suction hole.

According to the present embodiment, since the suction portion is formed along the outer circumferential surface of the cylindrical case, the suction capacity can be improved, and structural resistance of the case is not generated during the suction of the air.

Particularly, the suction portion includes a plurality of through holes, and the plurality of through holes can be uniformly formed over the entire outer circumferential surface of the case. Therefore, a suction flow path toward the inside of the air cleaner in the direction of 360 degrees with respect to the air cleaner . As a result, the suction area of the air can be increased, and even if the inner chamber is sitting or standing, the air around the room can be sucked sufficiently.

The suction portion includes a first suction portion provided in the first case, a third suction portion provided in the second case, and a second suction portion provided on the base side so as to extend in the axial direction As shown in FIG. Accordingly, the air present in the lower portion of the indoor space and the air in the indoor space existing at a relatively higher position can be sucked into the air cleaner based on the air cleaner, so that the suction capacity of the indoor space can be increased.

In addition, since the suction part of the suction part is formed at a height corresponding to the filter member or lower than the filter member, air can be sucked into the filter member through the suction part. And, since the remaining suction portion is formed at a position higher than the filter member, the air can be sucked into the filter member by the remaining suction portion.

Therefore, not only air in the indoor space, which is located at a height corresponding to the filter member, but also air located at a lower height than the filter member or air located at a height higher than the filter member can pass through the filter member And the air passing through the filter member can be easily moved to the fan located above the filter member. As a result, the suction flow rate of the air can be improved.

In particular, air located at a higher level than the filter member flows downward from the top of the fan housing. The outer diameter of the fan housing accommodating the fan gradually decreases toward the lower side, so that the air flow path between the case and the fan housing gradually increases. As a result, the air passing through the air passage can be easily sucked.

In addition, the first case or the second case may have a cylindrical or conical shape (conical shape with a truncated cone) to stably accommodate the internal components of the air cleaner, thereby improving space usability.

In addition, the first case or the second case is stably supported on the filter frame, and the suction part formed in the first and second cases can be positioned relatively close to the filter member. As a result, the flow loss of the air flowing to the filter member through the suction portion can be reduced.

In addition, the first case or the second case may be detachably coupled to the two parts. Particularly, the respective side portions of the two parts are fixed by the fastening member, and the other side portions can be maintained in the engaged state by the magnet member. When the user separates the case and wants to approach the internal parts, the magnet member can be separated and the inside of the case can be opened, so that the case can be easily separated.

Further, the upward discharge of air can be guided through the second blower, and the forward discharge of air can be guided by the flow switching device provided above the second blower. In the course of the rotation of the flow switching device, the discharge in the left and right direction of the air can be guided. As a result, air discharge is guided in various directions on the basis of the air cleaner, and a discharge airflow can be formed to a great distance from the air cleaner, so that the air cleaning function of the indoor space can be improved. Further, even if the inner chamber is sitting or standing, there is an advantage that the discharge airflow can be easily generated toward the peripheral space.

Further, the second blowing device is disposed on the upper side of the first blowing device, the partition plate is provided between the first and second blowing devices, and the air blown out from the first blowing device is radially outward So that it is possible to prevent the air discharged from the first blower unit from being re-introduced into the second blower unit.

In addition, the discharge passage formed in the first discharge guide device of the first fan device extends upward, and the partition plate extends sufficiently long in the radial direction outward from the upper side of the discharge passage, It is possible to prevent the water from passing through the partition plate and flowing into the second fan unit.

Further, since a plurality of air blowing devices are provided, there is an advantage that the air blowing capacity of the air cleaner can be improved.

In addition, since the centrifugal fan for increasing the blowing capacity of the air cleaner and the air guide device disposed at the outlet side of the centrifugal fan are provided, the air flowing in the radial direction through the centrifugal fan is easily guided upward .

Also, it is possible to prevent the phenomenon that independent air flows are generated through the first and second air blowing apparatuses to interfere with each other, thereby improving the air flow performance.

In addition, since the filter member is provided in a cylindrical shape, the air can be introduced into the interior of the filter member in all directions outside the filter member, so that the suction area can be increased and thus the air cleaning ability of the filter can be improved .

Further, since the filter member can slide in the radial direction toward the filter frame, there is an advantage that the filter member can be easily engaged or separated.

Further, since the air blowing fan includes the turbo fan which sucks the air in the axial direction and discharges the air in the radial direction, the air flow rate can be increased.

Further, since the air guide device having the guide ribs is included at the outlet side of the turbo fan, the flow loss can be reduced and the noise can be reduced.

In addition, since the protrusion is provided on the guide rib, it is possible to reduce the generation of vortices and smooth air flow toward the discharge portion.

Further, since a flow switching device for switching the air flow to one side of the air blowing device is provided and air can be discharged toward the front, the air discharged from the air cleaner can be discharged to a long distance.

1 is a perspective view showing an appearance of an air cleaner according to an embodiment of the present invention.
2 is a view showing a configuration of a first part of a first case according to an embodiment of the present invention.
3 is a perspective view showing the internal structure of the air purifier according to the embodiment of the present invention.
4 is a cross-sectional view taken along line IV-IV 'of FIG.
5 is a cross-sectional view taken along line V-V 'of FIG.
6 is an exploded perspective view showing a configuration of a first fan unit according to an embodiment of the present invention.
7 is a perspective view illustrating a configuration of a fan housing according to an embodiment of the present invention.
8 is an exploded perspective view showing a configuration of a first fan and a first air guide device according to an embodiment of the present invention.
FIG. 9 is a perspective view showing a configuration of a guide rib according to an embodiment of the present invention. FIG.
10 is a view showing a coupling position of the first fan housing and the first case according to the embodiment of the present invention.
FIG. 11 is an exploded perspective view showing a structure that is coupled to the partition plate and the partition plate according to the embodiment of the present invention. FIG.
12 is a view showing a coupling position of the second fan housing and the second case according to the embodiment of the present invention.
FIG. 13 is a cross-sectional view showing the air purifier according to the embodiment of the present invention, in which air is sucked from the upper side of the filter member and passes through the filter member.
FIG. 14 to FIG. 16 are views showing a state of air flow in the air cleaner according to the embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals whenever possible, even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

FIG. 1 is a perspective view showing an appearance of an air cleaner according to an embodiment of the present invention, and FIG. 2 is a view showing a configuration of a first part of a first case according to an embodiment of the present invention.

1, an air purifier 10 according to an embodiment of the present invention includes an air blowing device 100, 200 for generating an air flow, and a flow switching device 100 for switching the discharge direction of the air flow generated in the air blowing device 100, Apparatus 300 is included.

The air blowing apparatuses 100 and 200 include a first air blowing apparatus 100 for generating a first air flow and a second air blowing apparatus 200 for generating a second air flow.

The first fan unit 100 and the second fan unit 200 may be arranged in the vertical direction. For example, the second fan unit 200 may be disposed above the first fan unit 100. In this case, the first air flow forms a flow for sucking the indoor air existing on the lower side of the air cleaner 10, and the second air flow is present on the upper side of the air cleaner 10 Thereby forming a flow for sucking indoor air.

The air cleaner (10) includes cases (101, 201) forming an outer appearance.

Specifically, the case 101, 201 includes a first case 101 forming an outer appearance of the first fan unit 100. The first case 101 may have a cylindrical shape. The upper portion of the first case 101 may have a smaller diameter than the lower portion. That is, the first case 101 may have a truncated conical shape.

The first case 101 includes two parts 101a and 101b constituting the first case 101. [ The two parts 101a and 101b include a first part 101a and a second part 101b. The first and second parts 101a and 101b may have the same shape.

The first case 101 further includes a separation unit 101c to which the first and second parts 101a and 101b are coupled or separated. The separating portion 101c forms an end of the first part 101a or an end of the second part 101b. The first case 101 further includes a hinge provided on the opposite side of the separating portion 101c. The two parts can relatively rotate about the hinge part.

When at least one of the two parts rotates, the first case 101 is opened and can be separated from the air cleaner 10. The first casing 101 can be opened to replace or repair internal components of the first fan unit 100. [

In the first case 101, a first suction part 102 through which air is sucked is formed. The first suction portion 102 includes a through hole formed through at least a portion of the first case 101. A plurality of the first suction portions 102 are formed.

The plurality of first suction portions 102 are uniformly formed in the circumferential direction along the outer circumferential surface of the first case 101 so that air can be sucked in any direction with respect to the first case 101. That is, air can be sucked in the direction of 360 degrees with respect to the vertical center line passing through the inner center of the first case 101.

As described above, the first case 101 is formed in a cylindrical shape or a conical shape (a truncated conical shape), and a plurality of the first suction portions 102 are formed along the outer circumferential surface of the first case 101, May be increased. In addition, as in the case of the conventional air cleaner, the effect of avoiding the hexahedron shape having the corner portion can reduce the flow resistance to the air to be sucked.

The air sucked through the first suction portion 102 may flow in a substantially radial direction from the outer circumferential surface of the first case 101. [ Define the direction. 1, the vertical direction is referred to as an axial direction, and the horizontal direction is referred to as a radial direction. The axial direction may correspond to the center axial direction of the first fan 160 and the second fan 260, which will be described later, that is, the motor axial direction of the fan. The radial direction can be understood as a direction perpendicular to the axial direction.

The circumferential direction is understood to be an imaginary circular direction formed when rotating about a predetermined distance in the radial direction around the axial direction as a turning radius.

The first fan unit 100 further includes a base 20 provided below the first case 101 and placed on the ground. The base 20 is spaced downward from the lower end of the first case 101. A base suction part 103 is formed in a space between the first case 101 and the base 20.

The air sucked through the base suction part 103 can be flowed upward through the suction port 112 of the suction grill 110 (see FIG. 4) provided on the upper side of the base 20.

That is, the first fan unit 100 includes a plurality of suction units 102 and 103. The air present in the lower portion of the indoor space can easily flow into the first fan unit 100 through the plurality of suction units 102 and 103. [ Therefore, the intake amount of air can be increased.

A first discharge portion 105 is formed in the upper portion of the first fan unit 100. The first discharge portion 105 may be formed in the first discharge grille 195 of the first discharge guide device 190 (see FIG. 3) provided in the first fan device 100. The first discharge guide device 190 forms an upper end outer appearance of the first fan unit 100. The air discharged through the first discharge portion 105 may flow upward.

The case (101, 201) includes a second case (201) forming an outer appearance of the second fan unit (200). The second case 201 may have a cylindrical shape. The upper portion of the second case 201 may have a smaller diameter than the lower portion. That is, the second case 201 may have a truncated conical shape.

The second case 201 includes two parts 201a and 201b constituting the second case 201. [ The two parts 201a and 201b include a first part 201a and a second part 201b. The first and second parts 201a and 201b may have the same shape.

The first case 201 further includes a separator 201c to which the first and second parts 201a and 201b are coupled or separated. The separator 201c forms an end of the first part 201a or an end of the second part 201b. The second case 201 further includes a hinge provided on the opposite side of the separating unit 201c. The two parts can relatively rotate about the hinge part.

When at least one of the two parts rotates, the first case 201 is opened and can be separated from the air cleaner 10. The second case 201 can be opened to replace or repair the internal parts of the second blowing device 200. [

The diameter of the lower end of the second case 201 may be smaller than the diameter of the upper end of the first case 101. Therefore, in view of the overall shape of the cases 101 and 201, the lower cross-sectional area of the cases 101 and 201 is formed larger than the upper cross-sectional area. That is, the diameters of the cases 101 and 201 may be gradually increased from the upper end toward the lower end. With such a configuration, the air cleaner 10 can be stably supported on the ground.

In the second case 201, a second suction part 202 through which air is sucked is formed. The second suction portion 202 includes a through hole formed through at least a portion of the second case 201. A plurality of the second suction portions 202 are formed.

The plurality of second suction portions 202 are uniformly formed in the circumferential direction along the outer circumferential surface of the second case 201 so that air can be sucked in any direction with respect to the second case 201. That is, air can be sucked in the direction of 360 degrees with respect to the vertical center line passing through the inner center of the second case 201.

As described above, the second case 201 is formed in a cylindrical shape, and a plurality of the second suction units 202 are formed along the outer circumferential surface of the second case 201, so that the suction amount of air can be increased. In addition, as in the case of the conventional air cleaner, the effect of avoiding the hexahedron shape having the corner portion can reduce the flow resistance to the air to be sucked.

The air sucked through the second suction portion 202 can flow in a substantially radial direction from the outer circumferential surface of the second case 201. [

Any one of the two parts constituting the first case 101 or the second case 201 may have a semi-cylindrical shape or a semi-conical shape (a shape of a half of a truncated cone shape). When two parts having such a shape are combined, a first case 101 or a second case 201 of a cylindrical or conical shape (truncated cone) can be constituted.

2 shows a configuration of a first part 101a of the first case 101 as an example. Since the configuration of the second part 201a of the first case 201 is the same as that of the first part 101a, the description of the first part 101a is used. The overall shape of the first and second parts 201a and 201b of the second case 201 is similar to that of the first part 101a of the first case 101, 201a and 201b are larger than the size of the first part 101a. Therefore, the description of the first part 101a of the first case 101 may be applied to the first and second parts 201a and 201b of the second case 201 as well.

The first part 101a of the first case 101 includes a fastening part 108 provided for fastening the first part 101a and the second part 101b. The fastening part 108 of the first part 101a may be engaged with the fastening part of the second part 101b. The coupled fasteners can form hinges of the first and second parts 101a and 101b.

The first part 101a includes a magnet member 109 for detachably coupling the first and second parts 101a and 101b. The magnet member 109 may be installed in the separator 101c. The magnet member 109 of the first part 101a may be coupled to the magnet member of the second part 101b. In order to open the first case 101, the magnet member 109 of the first part 101a and the magnet member of the second part 101b may be separated from each other.

A locking protrusion 107 is provided at a lower portion of the first part 101a so that the first part 101a can be supported on the outer side of the first filter member 120. [ The locking protrusion 107 may protrude radially from the inner circumferential surface of the first part 101a. For example, the locking protrusion 107 may be engaged with a locking portion 131b (see FIG. 6) provided at the lower portion of the first filter frame 130. The locking protrusions 107 may be provided on both sides of the first part 101a.

The first and second parts 201a and 201b constituting the second case 201 may be provided with the locking protrusion. The distance from the inner circumferential surface of the second case 201 to the second filter frame 230 may be larger than the distance from the inner circumferential surface of the first case 101 to the first filter frame 130. The first and second filter frames 130 and 230 may have the same shape and size. The length of the locking protrusion provided on the first and second parts 201a and 201b of the second case 201 is set such that the first case 101 is divided into the first and second parts 101a and 101b The length of the engaging protrusion 107 in the radial direction can be longer than the length of the engaging protrusion 107 in the radial direction.

The air cleaner 10 includes a partitioning device 400 provided between the first fan unit 100 and the second fan unit 200. The second blowing device 200 may be positioned above the first blowing device 100 by the partitioning device 400. The partitioning device 400 includes a partition plate 430 formed on the upper side of the first fan unit 100 so as to be sufficiently long in the outer radial direction. The air blown from the first fan unit 100 can be prevented from being sucked into the second fan unit 200 by the partition plate 430. [

The flow switching device 300 may be installed above the second blowing device 200. On the basis of the air flow, the air flow path of the second fan unit 200 can communicate with the air flow path of the flow switching device 300. The air passing through the second fan unit 200 passes through the air passage of the flow switching device 300 and can be discharged to the outside through the second discharging unit 305. The second discharge portion 305 is formed at the upper end of the flow switching device 300.

The flow switching device 300 may be movably installed. In detail, the flow switching device 300 may be in a lying state (first position), as shown in Fig. 1, or in a sloped state (second position), as shown in Fig. 15 have.

A display device 600 for displaying operation information of the air purifier 10 is provided on the flow switching device 300. The display device 600 may move with the flow switching device 300.

FIG. 3 is a perspective view showing the internal structure of the air purifier according to the embodiment of the present invention, FIG. 4 is a sectional view taken along line IV-IV 'of FIG. 3, FIG. 7 is a perspective view showing a configuration of a fan housing according to an embodiment of the present invention, and FIG. 8 is a perspective view of a fan housing according to an embodiment of the present invention FIG. 9 is an exploded perspective view showing a configuration of a first fan and a first air guide device according to an embodiment of the present invention, and FIG. 9 is a perspective view illustrating a configuration of a guide rib according to an embodiment of the present invention.

3 to 9, the first fan unit 100 according to the embodiment of the present invention includes a base 20 and a suction grill 110 disposed on the upper side of the base 20.

The base 20 includes a base body 21 placed on the ground and a base protrusion 22 protruding upward from the base body 21 and on which the suction grill 110 is placed. The base protrusions 22 may be provided on both sides of the base 20.

By the base projection 22, the base body 21 and the suction grill 110 are spaced from each other. Between the base 20 and the suction grill 110, a base suction part 103 for forming an air suction space is formed.

The suction grill 110 includes a substantially ring-shaped grill body 111 and a rim portion 111a protruding upward from the outer circumferential surface of the grill body 111. The suction grill 110 may have a stepped configuration by the configuration of the grill body 111 and the rim portion 111a.

The suction grill 110 includes a suction unit 112 formed on the rim 111a. The suction unit 112 is configured to protrude upward along the circumference of the rim 111a and may extend in the circumferential direction. In addition, a plurality of suction holes 112a are formed in the suction portion 112. The plurality of suction holes 112a may communicate with the base suction portion 103.

Air sucked through the plurality of suction holes 112a and the base suction unit 103 may pass through the first fitter member 120. [ The first filter member 120 is provided in a cylindrical shape and may have a filter surface for filtering air. The air that has passed through the plurality of suction holes 112a may pass through the outer circumferential surface of the cylindrical first filter member 120 and may enter the interior thereof. The first case 101 may be supported on the upper portion of the suction unit 112.

The suction grill 110 further includes a movement guide part 113 protruding upward from the upper surface of the grill body 111 and guiding the upward or downward movement of the first filter member 120. The movement guide part 113 may be configured to have a shape gradually protruding from the upper surface of the grill body 111 in the circumferential direction. That is, the movement guide portion 113 may have an inclined surface that protrudes in the circumferential direction.

The movement guide portions 113 may be spaced apart in the circumferential direction to provide a plurality of movement guide portions 113. For example, as shown in FIG. 6, four movement guide portions 113 may be provided. However, the number of the movement guide portions 113 is not limited to this.

The grill main body 111 further includes a groove portion 114 for providing a space through which the handle 144, which will be described later, can move. The groove 113 constitutes at least a part of the grill body 111 and can be understood as a portion of the rim of the grill body 111 where the suction portion 112 is not formed.

The first fan unit 100 is provided with a lever device 142 provided above the suction grill 110 and operable by a user. The lever device 142 may be rotatable in a circumferential direction.

The lever device 142 includes a lever body 143 having a substantially ring shape and being rotatably provided. The lever body 143 is formed with a plurality of cutouts 145 disposed at positions corresponding to the plurality of movement guide sections 113. The plurality of cutouts 145 can be understood as through-holes formed in the lever body 143.

The plurality of cutouts 145 are spaced apart from one another and arranged in the circumferential direction of the lever body 143. Each cutout portion 145 may be rounded so as to have a predetermined curvature in the circumferential direction corresponding to the curvature of the outer circumferential surface of the lever body 143.

The lever device 142 is supported on the upper surface of the grill body 111. When the lever device 142 is supported by the grill main body 111, the plurality of movement guide parts 113 may be inserted into the plurality of cutouts 145. In detail, the plurality of movement guide portions 113 may protrude upward from the plurality of cutouts 145 through the cutouts 145.

The length of each cutout portion 145 may be longer than the length of the movement guide portion 113. Therefore, in a state in which the movement guide portion 113 is inserted into the cut-out portion 145, the lever device 142 can be rotated. One end portion of the movement guide portion 113 may interfere with one end portion of the cutout portion 145 while the lever device 142 rotates in one direction, The other end of the guide part 113 may interfere with the other end of the cutout part 145.

On the outer peripheral surface of the lever body 143, a second handle 144 is provided.

Above the lever device 142, a supporting device 140 for supporting the first filter member 120 is provided. The supporting device 140 includes a first handle 141 coupled to the second handle 144. The user can grasp the first and second handles 141 and 144 to rotate the lever body 143 and the support device 140 clockwise or counterclockwise.

The lever device 142 supports the lower surface of the support device 140. The support device 140 may be provided with a support protrusion (not shown) that contacts the movement guide unit 113. The support protrusion may protrude downward from a lower surface of the support device 140 and may be provided at a position corresponding to the movement guide part 113. The shape of the support protrusion corresponds to the shape of the movement guide part 113 and includes an inclined surface formed to protrude gradually in the circumferential direction.

The direction in which the movement guide part 113 is gradually protruded and the direction in which the support protrusion part is gradually protruded may be opposite to each other. For example, if the movement guide portion 113 is configured to be gradually protruded, the direction in which the support protrusion gradually protrudes may be a clockwise direction.

The support protrusion may be disposed at a position corresponding to the cutout portion 145. That is, the movement guide portion 113 and the support protrusion may be disposed at a position where they are inserted into the cutout portion 145.

The lever device 142 and the support device 140 may be rotated together. In this rotation process, the movement guide portion 113 and the support protrusion can be interfered with each other. Specifically, when the lower portion of the support projection and the upper portion of the movement guide portion 113 are in contact with each other, the lever device 142 and the support device 140 are lifted upward. The first filter member 120 supported by the support device 140 is coupled to the first fan unit 100 while moving upward.

When the upper part of the support protrusion and the lower part of the movement guide part 113 come into contact with each other or when the interference between the support protrusion part and the movement guide part 113 is released, the lever device 142 and the support device 140, Comes down. The first filter member 120 supported by the support device 140 is in a detachable state (released state) from the first fan unit 100.

The first filter member 120 may have a cylindrical shape with an open top. The first filter member 120 includes a filter body 121 having a hollow cylindrical filter portion and a filter hole 122 formed at an upper end of the filter body 121. A filter grasping portion 121a is provided at an upper portion or a lower portion of the filter main body 121. Air flows into the filter body 121 through the outer circumferential surface of the filter body 121 and can be discharged from the first filter member 120 through the filter hole 122.

The first fan unit 100 further includes a first filter frame 130 that forms a mounting space for the first filter member 120. The first filter frame 130 includes a first frame 131 forming a lower portion of the first filter frame 130 and a second frame 132 forming an upper portion of the first filter frame 130. [ ).

The first frame 131 may have a ring shape so as to surround the lower portion of the first filter member 120. The first frame 131 includes a frame depression 131a having a downwardly recessed shape. The frame depression 131a may be configured such that at least a portion of the first frame 131 is recessed. The frame depression 131a may be formed at a position corresponding to the groove 114 of the suction grill 110. The groove 114 and the frame depression 131a provide a space through which the first and second handles 141 and 144 can move. The first and second handles 141 and 144 are located in the space and can be rotated clockwise or counterclockwise.

The first frame 131 is formed with a latching portion 131b to which the latching protrusion 107 of the first case 101 is coupled. The latching part 131b may be formed on the outer side of the first filter supporting part 135. [

The second frame 132 may have a ring shape so as to surround the upper portion of the first filter member 120. The second frame 132 is spaced upward from the first frame 131. The second frame 132 has a substantially ring shape.

The ring-shaped internal space of the second frame 132 forms a frame hole 132a. The frame hole 132a may be configured to communicate with the filter hole 122 of the first filter member 120. [ That is, the frame hole 132a forms at least a part of the air passage passing through the first filter frame 130, and the air discharged through the filter hole 122 of the first filter member 120 passes through the And may be introduced into the first fan housing 150 through the frame hole 132a. That is, the first filter member 120 may be installed on the suction side of the first fan 160.

The upper portion of the second frame 132 may support the first fan housing 150. The first fan housing 150 includes a first fan inlet 156 for guiding the inflow of air into the first fan housing 150. The first fan inlet 156 may extend in an inner radial direction of the third body 153. The first fan inlet 156 is formed with a fan inlet hole 156a communicating with the frame hole 132a.

In other words, the first fan housing 150 is coupled to the upper side of the second frame 132, and the fan inlet hole 156a and the frame hole 132a are vertically aligned. According to this configuration, the air having passed through the second frame hole 132a can be introduced into the first fan housing 150 through the fan inlet hole 156a, 150 can be prevented from leaking outward.

The first fan inlet 156 is provided with a grill to prevent a user from putting a finger or the like into the first fan housing 150 when the first filter member 150 is separated from the first fan inlet 156. [ can do.

The second frame 132 includes a frame inner wall 133 and a frame outer wall 134 surrounding the frame inner wall 133. The frame inner wall 133 and the frame outer wall 134 may each have a ring shape. The frame hole 132a can be understood as an inner space of the frame inner wall 133.

The inner circumferential surface of the frame outer wall 134 may be spaced apart from the outer circumferential surface of the frame inner wall 133. [ At least a portion of the first fan housing 150 may be located in a space between the inner circumferential surface of the outer frame wall 134 and the outer circumferential surface of the inner frame wall 133. In other words, at least a portion of the first fan housing 150 may be inserted into a space (hereinafter referred to as a housing insertion portion) between the inner circumferential surface of the frame outer wall 134 and the outer circumferential surface of the frame inner wall 133.

The first filter frame 130 further includes a first filter support 135 extending upward from the first frame 131 toward the second frame 132. The first and second frames 131 and 132 may be spaced apart from each other by the first filter supporting unit 135. A plurality of first filter supports 135 may be provided and the plurality of first filter supports 135 may be arranged in the circumferential direction and connected to the rims of the first and second frames 131 and 132.

The mounting space of the first filter member 120 is defined by the first and second frames 131 and 132 and the plurality of first filter supports 135.

A sensor device 137 may be installed in the first filter frame 130. The sensor device 137 may include a dust sensor 137a for detecting the amount of dust in the air and a gas sensor 137b for detecting the amount of air in the air. The sensor device 137 further includes a sensor cover 137c for shielding the dust sensor 137a and the gas sensor 137b.

The dust sensor 137a and the gas sensor 137b may be arranged to be supported by the second frame 132 of the first filter frame 130. [ The second frame 132 may be provided with a sensor mounting portion 138 on which the sensor device 137 can be mounted. The sensor mounting portion 138 may protrude from the outer circumferential surface of the second frame 132.

In the mounting space, the first filter member 120 may be detachably mounted. The first filter member 120 has a cylindrical shape and air can be introduced through the outer peripheral surface of the first filter member 120. In the course of passing through the first filter member 120, impurities such as fine dust in the air can be filtered.

Since the first filter member 120 has a cylindrical shape, it is possible to introduce air in any direction with respect to the first filter member 120. Therefore, the filtering area of the air can be increased.

The mounting space may be formed in a cylindrical shape corresponding to the shape of the first filter member 120. The first filter member 120 may be slidably received in the mounting space during the mounting process. On the contrary, the first filter member 120 can be slidably drawn out from the mounting space in the separation process.

In other words, when the first and second handles 141 and 144 are operated while the first filter member 120 is placed on the upper surface of the supporting device 140, the first filter member 120 moves downward Off position. Then, the first filter member 120 is slid radially outward, and can be separated from the mounting space.

On the other hand, the first filter member 120 is slid radially inward toward the mounting space, separated from the mounting space, and supported on the upper surface of the supporting device 140, 144 can be brought into close contact with each other. At this time, the first filter member 120 is positioned at the coupling position to the first fan unit 100.

On the other hand, a first support cover 136 may be coupled to the outside of the first filter support 135.

The first fan unit 100 further includes a first fan housing 150 installed at an outlet side of the first filter member 120. Referring to FIG. 7, the first fan housing 150 includes a housing body 151, 152, 153 forming a housing space 150a in which the first fan 160 is accommodated. The housing body 151, 152, 153 may be supported by the first filter frame 130.

The housing main bodies 151, 152, and 153 may be configured to be stepped so that their diameters are different. In detail, the housing main body 151, 152, 153 includes a first main body 151 having a first diameter (hereinafter referred to as a first set diameter) and a substantially cylindrical shape. The first body 151 forms an upper portion of the housing main body 151, 152, 153.

The housing body 151, 152, 153 further includes a second body 152 extending obliquely from the first body 151. For example, the second main body 152 may extend obliquely downward from the lower portion of the first main body 151 so as to have a reduced diameter.

The housing bodies 151, 152 and 153 further include a third body 153 extending downward from the second body 152 and having a second diameter (hereinafter referred to as a second preset diameter). The second set diameter may have a smaller value than the first set diameter.

According to the structure of the first, second, and third bodies 151, 152, 153, the bottom diameter of the housing main body 151, 152, 153 may be smaller than the upper diameter. Therefore, the distance between the outer surface of the first fan housing 150 and the inner circumferential surface of the first case 101 surrounding the first fan housing 150 may be different in the vertical direction.

The housing main bodies 151, 152 and 153 may include housing cutouts 154a and 154b. The housing cutout portions 154a and 154b may be formed by cutting at least a portion of the third body 153. [ For example, the housing cutout portions 154a and 154b may be cut upward from the lower end of the third body 153 by a predetermined height.

The housing cutout portions 154a and 154b include a first cutout portion 154a formed at a position corresponding to the first filter support portion 135 and supporting the first filter support portion 135. [ The first cutout 154a may include the first filter support 135 or the first support cover 136. [

The housing cutouts 154a and 154b include a second cutout 154b formed at a position corresponding to the sensor mount 138 to support the sensor mount 138. [ The sensor mounting portion 138 may be positioned on the second cutout 154b. A sensor supporting portion 155 supported by the sensor mounting portion 138 is disposed above the second cutout portion 154b. The sensor mounting portion 138 and the sensor supporting portion 155 may define an installation space in which the sensor device 137 is installed.

The third body 153 may be positioned to be inserted into the housing insert formed in the second frame 132. In other words, the third body 153 is inserted into the housing insertion portion, and the housing cut-out portions 154a and 154b support the upper portions of the first filter frame 135 and the sensor mounting portion 138, The first filter frame 130 and the first fan housing 150 can be stably coupled.

The first fan unit 100 further includes an ionizer 158 for removing or sterilizing airborne odor particles. The ionizer 158 is coupled to the first fan housing 150 and can act on the air flowing inside the first fan housing 150. For example, the ionizer 158 may be located at the first incision 154a and may be coupled to the third body 153.

The sensor device 137 and the ionizer 158 may be installed in the second blower 200, which will be described later. As another example, the sensor device 137 and the ionizer 158 may be installed in one of the first blowing device 100 and the second blowing device 200.

The first fan 160 is placed on the upper side of the first fan inlet 151. For example, the first fan 160 includes a centrifugal fan for introducing air in the axial direction and discharging air upward in the radial direction.

The first fan 160 includes a hub 161 to which a rotary shaft 165a of a first fan motor 165 as a centrifugal fan motor is coupled and a shroud 162 disposed to be spaced apart from the hub 161 And a plurality of blades 163 disposed between the hub 161 and the shroud 162. The first fan motor 165 may be coupled to the upper side of the first fan 160.

The hub 161 may have a bowl shape whose diameter decreases toward the downward direction. The hub 161 includes a shaft coupling portion 161a to which the rotation shaft 165a is coupled and a first blade coupling portion 161b that extends upward from the shaft coupling portion and extends obliquely.

The shroud 162 is provided with a lower end formed with a shroud suction port 162a through which air having passed through the first fan inlet 151 is drawn and a second blade coupling portion 162b extending upward from the lower end ).

One surface of the blade 163 is coupled to the first blade coupling portion 161b of the hub 161 and the other surface of the blade 163 is coupled to the second blade coupling portion 162b of the shroud 162. The plurality of blades 163 may be spaced apart from each other in the circumferential direction of the hub 161.

The blade 163 includes a leading edge 163a forming a side end to which air flows and a trailing edge 163b forming a side end to which air flows.

The air passing through the first filter member 120 flows upward into the first fan housing 150 through the first fan inlet 151. The air flows in the axial direction of the first fan 160 and flows into the first leading edge 163a and flows to the trailing edge 163b via the blade 163. [

At this time, the trailing edge 163b is inclined outwardly upward in the axial direction in correspondence with the flow direction of the air so that the air flowing out through the trailing edge 163b can flow upward in the radial direction .

Referring to FIG. 5, the first fan unit 100 includes a first air guide device (not shown) coupled to an upper side of the first fan 160 to guide the flow of air that has passed through the first fan 160 170).

The first air guide device 170 includes an outer wall 171 having a cylindrical shape and an inner wall 172 having a cylindrical shape located inside the outer wall 171. The outer wall 171 is disposed so as to surround the inner wall 172. Between the inner circumferential surface of the outer wall 171 and the outer circumferential surface of the inner wall 172, a first air flow path 172a through which air flows is formed.

The first air guide device 170 includes a guide rib 175 disposed in the first air passage 172a. The guide ribs 175 extend from the outer circumferential surface of the inner wall 172 to the inner circumferential surface of the outer wall 171. A plurality of the guide ribs 175 may be spaced apart from each other. The plurality of guide ribs 175 guide the air introduced into the first air passage 172a of the first air guide device 170 through the first fan 160 upward.

The guide ribs 175 may extend obliquely upward from a lower portion of the outer wall 171 and the inner wall 172. For example, the guide ribs 175 may be rounded to guide the air to flow upwardly.

9, the guide rib 175 includes a rib main body 175a which extends upward in a round manner. The rib main body 175a includes a static pressure surface 175b forming a surface in which air flows and a negative pressure surface 175c forming an opposite surface of the static pressure surface 175b. The positive pressure surface 175b is concave and the negative pressure surface 175c is convex.

The rib main body 175a includes a leading edge 175d forming a side end portion into which air flows and a trailing edge 175e forming a side end portion through which air is discharged.

The leading edge 175d is formed to be rounded from the static pressure surface 175b toward the negative pressure surface 175c. With this configuration, some of the air introduced through the leading edge 175d can be guided by the static pressure surface 175b, and the remaining air can be guided by the negative pressure surface 175c. The air flowing to the negative pressure surface 175c passes through the plurality of protrusions 175f.

The plurality of protrusions 175f protrude from the negative pressure surface 175c and extend from the leading edge 175d toward the trailing edge 175e. The protrusion 175f has an airfoil shape in which the height protruding from the leading edge 175d toward the trailing edge 175e is reduced.

The plurality of protrusions 175f are formed on the negative pressure surface 175c to prevent vortices from being generated on the negative pressure surface 175c and the air can easily flow upward.

On the other hand, the trailing edge 175e may have a saw-tooth shape in which the crests and valleys are repeated in the radial direction. With this configuration, there is a time difference in the air flowing out from the trailing edge 175e, that is, air from the mountain and the valley, and noise generation is reduced.

The first air guide device 170 further includes a motor receiving portion 173 extending downward from the inner wall 172 to receive the first fan motor 165. The motor receiving portion 173 may have a bowl shape whose diameter decreases toward the lower portion. The shape of the motor receiving portion 173 may correspond to the shape of the hub 161. [ The motor receiving portion 173 may be inserted into the hub 161.

The first fan motor 165 can be supported on the upper side of the motor receiving portion 173. The rotary shaft 165a of the first fan motor 165 extends downward from the first fan motor 165 and extends through the bottom of the motor receiving portion 173, And may be coupled to the portion 161a.

A motor coupling portion 166 is provided on the upper side of the first fan motor 165 and the motor coupling portion 166 connects the first fan motor 165 to the first air guide device 170 Guide it to be fixed.

The second fan unit 220 includes a second filter unit 220, a second filter frame 230, a second fan housing 250, a second fan 260, and a second fan motor 265 do. These configurations are the same as those of the first fan unit 120 provided in the first fan unit 100, the first filter frame 130, the first fan housing 150, the first fan 160, 165, and therefore, the description thereof relates to the description of the first blower 100. [

The second fan unit further includes a lever support unit 560 for supporting the second filter member 220 of the second fan unit 200 or the lever unit. The second air blowing device 200 further includes a third air guide device 270 coupled to the second fan 260 and guiding the flow of the air passing through the second fan 260 . Since the third air guide device 270 is similar to the first air guide device 170, the description of the first air guide device 170 is used.

The third air guide device 270 includes a guide device for guiding the movement of the flow switching device 300. The guide device includes a first rack and a shaft guide groove.

The second air blowing device 200 is provided with a second air discharge guide device 280 installed at the upper side of the third air guide device 270 for guiding the flow of air passing through the third air guide device 270 .

On the upper side of the second discharge guide device 280, the flow switching device 300 is movably provided. The flow switching device 300 includes a third fan 330. The third fan 330 guides the air that has passed through the third air guide device 270 to be discharged to the outside of the air cleaner 10. A third fan motor 335 may be coupled to the third fan 330.

The third fan 330 may include an axial flow fan. In detail, the third fan 330 may be operated to discharge the air axially flowing through the third air guide device 270 in the axial direction. The air that has passed through the third fan 330 can be discharged to the outside through the second discharging unit 305 positioned above the third fan 330.

The air cleaner 10 is provided with the second discharging portion 305 together with the first discharging portion 105 of the first air blowing apparatus 100 so that the discharged air amount is improved and air is discharged in various directions Effect appears.

A display device 600 may be provided on the upper surface of the air cleaner 10 to display operation information of the air cleaner 10. The display device 600 includes a display PCB 618. The display PCB 618 may be installed in a space between the upper surface of the air cleaner 10 and the third fan 330.

The first fan motor 165 and the second fan motor 265 may be arranged in a line with respect to the longitudinal direction of the air cleaner 10. The second fan motor 265 and the third fan motor 335 may be arranged in a line with respect to the longitudinal direction of the air cleaner 10.

The flow switching device 300 further includes a rotation guide device for guiding rotation of the flow switching device 300 in the left-right direction and rotation in the up-down direction. The rotation in the left-right direction may be referred to as "rotation in the first direction ", and the rotation in the up-down direction may be referred to as the" rotation in the second direction ".

The rotation guide device includes a first guide mechanism for guiding the rotation of the fluidization device 300 in the first direction and a second guide mechanism for guiding the rotation of the fluidization device 300 in the second direction .

The first guide mechanism includes a first gear motor 363 for generating a driving force and a first gear 360 coupled to the first gear motor 363 for rotation. For example, the first gear motor 363 may include a step motor that can easily control the rotation angle.

The second guide mechanism includes a rotation guide member 370 (see Fig. 15) for guiding rotation of the flow switching device 300 in the second direction. The rotation guide member 370 includes a rack 374.

The second guide mechanism may include a second gear motor 367 for generating a driving force and a second gear 365 coupled to the second gear motor 367. For example, the second gear motor 367 may include a step motor. When the second gear motor 367 is driven, the rotation guide member 370 can move in the vertical direction by interlocking the second gear 365 and the second rack 374 . Therefore, the flow switching device 300 can perform the second direction rotation according to the movement of the rotation guide member 370.

Second position "protruding from the upper surface of the air cleaner 10 when the flow switching device 300 rotates in the second direction (see FIG. 15). On the other hand, as shown in FIG. 4, the position where the flow switching device 300 is lying may be referred to as a "first position ".

5, the first case 101 forms an outer appearance of the first fan unit 100, and the inner parts of the first fan unit 100, i.e., the first fan 160 and the first fan 160, And may be disposed to surround the housing 150.

The air introduced into the first case 101 through the first suction unit 102 formed in the first case 101 passes through the first filter member 120. Particularly, the first suction portion 102 includes a suction portion disposed at a position higher than the first filter member 120, and the air sucked through the suction portion is separated from the first fan housing 150, Flows through the space formed between the case 101 and flows downward toward the first filter member 120. [ Then, air flows into the inner space of the first filter member 120 through the outer peripheral surface of the first filter member 120.

Similarly, the second case 201 forms an outer appearance of the second fan unit 200, and the inner parts of the first fan unit 200, that is, the second fan 260 and the second fan housing 250, As shown in FIG.

The air introduced into the second case 201 through the second suction unit 202 formed in the second case 201 passes through the second filter member 220. Particularly, the second suction part 202 includes a suction part disposed at a higher position than the second filter member 220, and the air sucked through the suction part is separated from the second fan housing 250, Flows through the space formed between the case 201 and flows downward toward the second filter member 220. [ The air flows into the inner space of the second filter member 220 through the outer peripheral surface of the second filter member 220.

Hereinafter, the relative positions of the case and the fan housing will be described with reference to the drawings.

FIG. 10 is a view showing a coupling position between the first fan housing and the first case according to the embodiment of the present invention, FIG. 11 is an exploded perspective view showing a configuration of coupling to the partition plate and the partition plate according to the embodiment of the present invention, FIG. 12 is a view showing a coupling position of the second fan housing and the second case according to the embodiment of the present invention, and FIG. 13 is a view showing the air cleaner according to the embodiment of the present invention, FIG. 5 is a cross-sectional view showing a state in which the filter member is sucked and passes through the filter member.

Referring to FIGS. 10, 11, and 4, a first air blowing apparatus 100 according to an embodiment of the present invention includes a first air guide device 170 coupled to an upper side of the first air guide device 170, And a second air guide device 180 for guiding the air having passed through the first discharge guide device 190 to the first discharge guide device 190.

The second air guide device 180 is provided with a first guide wall 181 having a substantially cylindrical shape and a second guide wall 182 located inside the first guide wall 181 and having a substantially cylindrical shape ). The first guide wall 181 may be disposed to surround the second guide wall 182.

A second air flow path 185 through which air flows is formed between the inner circumferential surface of the first guide wall 181 and the outer circumferential surface of the second guide wall 182. Air flowing through the first air passage 172a of the first air guide device 170 passes through the second air passage 185 and flows upward.

A lower portion of the second guide wall 182 is provided with a fastening guide 183 to be engaged with the first air guide device 170. The fastening guide 183 may extend below the second guide wall 182.

A predetermined fastening member is coupled to the fastening guide 183, and the fastening member can be coupled to the fastening rib 178 of the first air guiding device 170. The coupling rib 178 may be formed to protrude upward from the upper surface of the motor receiving portion 173. The plurality of fastening guides 183 may be spaced apart from one another and may be arranged in the circumferential direction. For example, the fastening guide 183 and the fastening ribs 178 may be provided in triplicate.

The second air guide device 180 further includes a wallpaper support portion 187 extending from the inner circumferential surface of the first guide wall 181 to the outer circumferential surface of the second guide wall 182. The first and second guide walls 181 and 182 can be stably coupled by the wallpaper support portion 187.

The wall paper supporting portions 187 are spaced apart from each other in the circumferential direction. For example, the plurality of wallpaper segments 187 may include four wallpaper segments 187 extending in four directions. The lower portion of the first discharge guide device 190 may be supported by the plurality of wallpaper support portions 187.

A first space portion 184 in which at least a part of the PCB device 500 is accommodated is formed inside the second guide wall 182 having a cylindrical shape. The PCB device includes a power supply unit 520 and a main PCB 511.

The power supply unit 520 is a device for supplying power to a plurality of components in the main PCB 511 and the air purifier 10 by receiving a commercial power supplied from a power supply line connected to the air cleaner 10, . The power supply unit 520 may include an AC power PCB (power PCB). The main PCB 511 may include a PCB for DC power source driven by the DC voltage converted from the AC power source PCB.

The PCB device 500 further includes a PCB support plate 525 for supporting the power supply unit 520 and the main PCB 511. The main PCB 511 is supported on one side of the PCB support plate 525 and the power supply unit 520 can be supported on the other side of the PCB support plate 525.

The PCB device includes a communication module 515 through which the air purifier 10 can communicate with an external device. For example, the communication module 515 may include a Wi-Fi module. The communication module 515 is supported on the PCB support plate 525 and may be disposed on the lower side of the main PCB 511.

The second air guide device 180 further includes a second engagement portion 188 provided on an inner circumferential surface of the second guide wall 182 and coupled to the partition plate 430. The partition plate 430 may include a first engaging portion 449a coupled to the second engaging portion 188.

A plurality of the second coupling portions 188 may be provided, and the plurality of second coupling portions 188 may be spaced apart from each other and arranged in a circumferential direction. For example, the second coupling portion 188 and the first coupling portion 449a may be provided in triplicate.

The second air guide device 180 further includes a bent portion 186 that is bent outward from the outer circumferential surface of the second air guide device 180. The bent portion 186 may extend outward from the upper portion of the first guide wall 181. The bent portion 186 forms a rim portion of the second air guide device 180 and may form an outermost portion of the second air guide device 180.

The bent portion 186 is configured to extend radially outward from the upper end of the first guide wall 181 and to bend downward. In one example, the bent portion 186 may have a substantially a shape or an eave shape. The bent portion 186 includes a first extending portion extending radially outward from the first guide wall 181 and a second extending portion extending downward from the first extending portion. The first extending portion is understood as a portion for supporting the rim portion of the first discharge guide device 190 and the second extending portion can be understood as a portion for supporting the inner surface of the first case 101. [

The first air blowing apparatus 100 is disposed at an outlet side of an air flow passing through the second air guide apparatus 180 on the upper side of the second air guide apparatus 180, And a first discharge guide device 190 for guiding the air discharge to the outside of the air cleaner 10. That is, the second air guide device 180 is disposed on the suction side of the first discharge guide device 190.

The first discharge guide device 190 includes a first discharge body 191 that forms a second space 194 at a substantially central portion thereof. The first discharge main body 191 includes a main body outer wall 191a forming an outer peripheral surface and a main body inner wall 191b forming an inner peripheral surface. The main body outer wall 191a may be disposed to surround the main body inner wall 191b. The first discharge main body 191 may have an annular shape due to the structure of the main body outer wall 191a and the main body inner wall 191b.

The second space 194 may be formed inside the main body inner wall 191b. At least a portion of the PCB device 500 may be received in the second space 194. The second space portion 194 is formed on the upper side of the first space portion 184 and together with the first space portion 184 forms an installation space portion in which the PCB device 500 is installed.

The first discharge main body 191 includes a first discharge grill 195. The first discharge grill 195 may extend radially outward from the main body inner wall 191b of the first discharge main body 191 toward the main body outer wall 191a.

The first discharge grill 195 is provided with a plurality of first discharge grills 195 and a first discharge portion 105 through which air can be discharged to the outside is formed between the plurality of first discharge grilles 195. The plurality of first discharge grilles 195 are disposed on the upper side of the second air passage 185 and the air having passed through the second air passage 185 flows toward the first discharge grill 195, And may be discharged through the first discharge portion 105. The air flow path formed from the second air flow path 185 to the first discharge portion 105 may be referred to as a "discharge flow path ".

The second fan unit 200 further includes a lever support unit 560 for supporting the second filter member 220 of the second fan unit 200 or the lever unit. The lever support device 560 has a substantially annular shape. The lever support device 560 includes a third space portion 564 defining an installation space in which the PCB device 500 can be placed. The third space portion 564 is formed at a substantially central portion of the lever supporting device 560.

The lever support device 560 includes a lever support body 561 having an annular shape. The lever supporting body 561 extends upward from the inner circumferential surface toward the outer circumferential surface with a slight inclination toward the axial direction. That is, the surface constituting the lever supporting body 561 constitutes an inclined surface. The space between the inclined surface and the upper surface of the partition plate 430, which will be described later, provides a space portion where the user's hand can be located.

The lever supporting body 561 blocks the air discharged through the first discharging part 105 of the first fan unit 100 from flowing into the second fan unit 200, It may also be called a "blocker."

The lever supporting device 560 further includes a movement guide part 565 protruding upward from the lever supporting body 561. Since the movement guide portion 565 has the same configuration as the movement guide portion 113 of the first fan unit 100, the description of the movement guide portion 113 is used. For convenience of explanation, the movement guide section 113 is referred to as a " first movement guide section "and the movement guide section 565 is referred to as a" second movement guide section ".

The lever support device 560 further includes a support protrusion 566 protruding upward from the inner circumferential surface of the lever support body 5610. The support protrusion 566 protrudes from the lever of the second blowing device 200, Supporting the device.

A partitioning device 400 is provided between the first fan unit 100 and the second fan unit 200. The partitioning device 400 includes a partition plate 430 for separating or blocking the air flow generated in the first fan unit 100 and the air flow generated in the second fan unit 200 . The first and second fan units 100 and 200 may be spaced apart in the vertical direction by the partition plate 430.

That is, a spacing space in which the partition plate 430 is located is formed between the first and second fan units 100 and 200. The first discharge guide unit 190 of the first fan unit 100 is positioned at the lower end of the spacing space and the lever support unit 560 of the second fan unit 200 is positioned at the upper end of the spacing space. .

The spacing space may be divided into an upper space and a lower space by the partition plate 430. The lower space is understood as a first space part that is passed through in the course of the air discharged from the first discharging part 105 of the first discharging guide device 190 to the outside of the air cleaner 10. [ And, the upper space is understood as a holding space in which a user can put his / her hand into the air cleaner 10 when moving.

The air discharged from the first discharging unit 105 is guided by the partition plate 430 and flows to the outside of the air cleaner 10 and can be prevented from flowing into the second air blowing apparatus 200 have.

The partition plate 430 includes a first plate 440 and a second plate 450 coupled to the first plate 440. The second plate 450 is provided on the upper side of the first plate 440. The first plate 440 may extend upward to be rounded, and the second plate 450 may extend downward toward the bottom.

The first plate 440 includes a plate inner wall 441 having a substantially annular shape and a plate outer wall 443 disposed to surround the plate inner wall 441. A fourth space 449 is formed at the center of the plate inner wall 441. The fourth space portion 449 provides an installation space in which at least a part of the PCB device 500 is located.

The plate outer wall 443 is configured to extend radially outward from the plate inner wall 441. The first plate 440 further includes a depression 442 defining a space between the plate inner wall 441 and the plate outer wall 443. The depressed portion 442 may be configured to be depressed downward from a space between an upper end of the plate inner wall 441 and an upper end of the plate outer wall 443.

The first plate 440 further includes a first engaging portion 449a coupled to the second air guide device 180. The first engaging portion 449a may be provided on the inner circumferential surface of the plate inner wall 441. The first engaging portion 449a may be coupled to the second engaging portion 188 of the second air guiding device 180.

The partition plate 430 may be provided with a display device 460 on which information related to the operation of the air cleaner 10 is displayed. In one example, the information may include information on air pollution degree or air cleanliness degree.

In detail, the display device 460 may be installed in a space between the first plate 440 and the second plate 450. In the first plate 440, a device seating portion 445 on which the display device 460 is placed is formed. The device seating portion 445 may be formed on the upper surface of the plate outer wall 443.

In the display device 460, an illumination source 462 is included. The illumination source 462 is installed in the illumination support portion 461. The illumination support portion 461 includes a mounting groove 461a into which the illumination source 462 is inserted.

In detail, the light source 462 may include an LED. The display device 460 further includes a diffusion unit 446 disposed on one side of the illumination source 462 and adapted to diffuse the light emitted from the illumination source 462.

The display device 460 is provided with at least one side of the diffusion part 446 and reflects the light so as to focus the light diffused through the diffusion part 446 to the outer peripheral surface of the partition plate 430. [ Reflection plate 447 is further included. For example, the reflection plate 447 may be provided on the upper side and the lower side of the diffusion unit 446, respectively. According to this configuration, the light emitted from the illumination source 462 is concentrated by the reflection plate 447 to the diffusion unit 446, and can be converted into the light that is transmitted through the diffusion unit 446 .

The second plate 450 includes a second plate body 451 having a substantially annular shape. The second plate 450 further includes a plate seating part 455 protruding radially inward from the inner circumferential surface of the second plate body 451. The plate seating portion 455 is configured to be depressed downward from the upper end of the second plate body 451 and can support the lever supporting device 560.

A fifth space portion 459 is formed at the center of the plate seating portion 455. The fifth space 459 provides an installation space in which at least a part of the PCB device 500 is located. The fifth space part 459 may be aligned with the fourth space part 564. The first to fifth space portions 184, 194, 564, 449, and 459 are vertically aligned to provide an installation space for the PCB device 500.

The second plate body 451 may extend obliquely outwardly in the radial direction. In detail, the second plate body 451 includes an inclined surface 453 extending downward from the inner circumferential surface of the second plate body 451 toward the outer circumferential surface. For example, the inclined surface 453 has a round surface that extends in a rounded manner.

The first case 101 is supported by the suction grille 110 and extends upward. For example, the first case 101 may be supported on an upper surface or an outer peripheral surface of the suction grille 110 and may extend upward.

The first case 101 is connected to the inner parts of the first fan unit 100, that is, the first filter unit 120, the first filter frame 130, the first fan housing 150, And may be installed so as to surround the air guide device 170 and the second air guide device 180. That is, the internal components of the first fan unit 100 can be accommodated in the first casing 101.

An upper inner circumferential surface of the first case 101 may be supported by a second extension of the bent portion 186. For example, the outer surface of the second extension of the bent portion 186 may be coupled to the upper inner circumferential surface of the first case 101.

The outer surface of the first fan housing 150 and the outer surface of the first air guide device 170 and the outer surface of the first guide wall 181 of the second air guide device 180 are connected to the first case 101 from the inner surface thereof. This is because the bent portion 186 of the second air guide device 180 is further projected radially outward than the first fan housing 150 and the first air guide device 170.

A plurality of first suction portions 102 provided on the outer circumferential surface of the first case 101 may be formed from a lower portion of the first case 101 to an upper portion of the first case 101. For example, the first suction portion 102 may be formed up to a height where the first fan housing 150 is located.

In detail, the first suction portion 102 includes a plurality of lower suction portions 102a formed from a lower portion of the first case 101 to a height at which the first filter member 120 is located, And a plurality of upper suction portions 102b formed from the upper side of the first case 102a to the upper side of the first case 101. [

The plurality of lower suction portions 102a are disposed at a height corresponding to the first filter member 120. [ The plurality of upper suction portions 102b may be disposed at a higher position than the first filter member 120. [

In other words, when the height of the suction grill 110 is defined as a reference point, the first filter member 120 extends upward from the suction grill 110, and the upper end of the first filter member 120 1 < / RTI > height H1. The plurality of lower suction units 102a may be formed from the suction grill 110 to the second height H2. That is, the uppermost suction portion of the plurality of lower suction portions 102a may be formed at the second height H2. The first height H1 and the second height H2 may have the same value.

The plurality of upper suction portions 102b may be disposed on the upper side of the first filter member 120 and may extend from the suction grille 110 to a third height H3. That is, the uppermost suction portion of the plurality of upper suction portions 102b may be formed at the third height H3. Of course, the third height H3 may have a larger value than the first height H1 and the second height H2.

The outer surface of the first fan housing 150 and the inner surface of the first case 101 may be spaced apart from each other. Air sucked through the upper suction portion 102b flows into the first filter member 120 in a space between the outer surface of the first fan housing 150 and the inner surface of the first case 101 A housing suction passage 159 is formed. The housing suction passage 159 can communicate with the upper suction portion 102a.

A first inlet portion 159a formed in a space between an outer surface of the first main body 151 and an inner surface of the first case 101 and a second inlet portion 159b formed in the third main body 153 And a second inlet portion 159b formed in the space between the outer surface and the inner surface of the first case 101. [ The air sucked through the upper suction portion 102b flows into the housing suction passage 159 through the first inlet portion 159a and the air passing through the first inlet portion 159a passes through the second inlet And is discharged from the housing suction passage 159 through the opening 159b. The discharged air can flow into the first filter member 120.

As described above, the first set diameter of the first body 151 may be larger than the second set diameter of the third body 153. The distance between the outer surface of the first body 151 and the inner surface of the first case 101, that is, the first radial width S1 of the first inlet 159a, 153 may be formed to be smaller than the distance between the outer surface of the first inlet portion 153 and the inner surface of the first case 101, that is, the second radial width S2 of the second inlet portion 159b.

The second body 152 extends downward from the lower end of the first body 151 toward the upper end of the third body 153 and the diameter of the second body 152 gradually decreases do. Therefore, the distance S2 between the outer surface of the second body 152 and the inner surface of the first case 101 may be gradually increased toward the lower side. The distance S2 may be greater than or equal to the distance S1 and less than or equal to the distance S3. That is, the width of the housing suction passage 159 is configured to be larger on the basis of the air flow direction.

According to such a configuration, the size of the air flow passage sucked through the upper suction portion 102b and flowing through the housing suction passage 159 may be configured to gradually increase toward the first filter member 120 . Therefore, the flow performance of the air flowing through the housing suction passage 159 through the upper suction portion 102b can be improved, and the suction flow amount can be increased.

Next, referring to Fig. 12, the second blowing device 200 includes a plurality of parts. The plurality of components includes a second filter member 220 mounted on the second filter frame 230 and a second fan housing 220 disposed above the second filter member 220 and housing the second fan 260. [ A third air guide device 270 coupled to the upper side of the second fan housing 250 and a second discharge guide device 280 coupled to the upper side of the third air guide device 270, .

The second fan unit 200 includes a second case 201 surrounding the plurality of components. The second case 201 may be supported by the lever support device 560 and extend upward. For example, the lower inner circumferential surface of the second case 201 may be supported on the outer circumferential surface of the lever supporting device 560.

The second case 201 includes a plurality of second suction units 202. The second suction unit 202 includes a lower suction unit 202a disposed at a height corresponding to the second filter member 220 and an upper suction unit 202b disposed above the second filter member 220. [ ).

The second fan 250 includes a first body 251, a second body 252, and a third body 253 having different diameters. The first main body 251 has a third predetermined diameter and the second main body 252 extends obliquely downward to the lower side of the first main body 251, 2 body 252 to have a fourth set diameter. Since this configuration is similar to that of the first fan 150, the description of the first fan 150 is used.

The outer surface of the second fan 250 and the inner surface of the second case 201 are separated from each other by a predetermined distance, and the housing suction passage 259 is formed in the spaced space. The housing suction passage 259 is provided with a first inlet portion 259a formed in a space between the outer surface of the first body 251 and the inner surface of the second case 201 and a second inlet portion 259b formed in the first inlet portion 259a, And a second inlet portion 259b formed in the space between the inner surface of the second case 201 and the outer surface of the third body 253.

The first width S1 'of the first inlet 259a may be smaller than the second width S3' of the second inlet 259b. The distance S2 'between the outer surface of the second body 252 and the inner surface of the second case 201 may be greater than the width S1' and less than the width S3 '.

Air sucked into the second case 201 from the upper suction portion 202b flows into the housing suction passage 259 through the first inlet portion 259a and flows into the second inlet portion 259b Through the housing suction passage 259 through the housing suction passage 259. The discharged air flows inside the second filter member 220.

According to such a configuration, the size of the air flow passage sucked through the upper suction portion 202b and flowing through the housing suction passage 259 may be configured to gradually increase toward the first filter member 220 . Therefore, the flow performance of the air flowing through the housing suction passage 259 through the upper suction portion 202b can be improved, and the suction flow amount can be increased.

The size of the housing suction passage 259 of the second fan unit 200 may be smaller than the size of the housing suction passage 159 of the first fan unit 100. The size of the first case 101 is larger than that of the second case 201 while the dimensions of the first fan housing 150 and the second fan housing 250 are the same . The first case 101 is supported by the bent portion 186 of the second air guide device 186 and extends downward to be relatively spaced from the second fan housing 250, Since the case 201 is disposed adjacent to the second fan housing 250 relatively.

Referring to Fig. 13, the flow of air sucked through the upper suction portions 102b and 202b of the first and second cases 101 and 201 will be briefly described.

The first suction portion 102 of the first case 101 includes the upper suction portion 102b located on the upper side of the first filter member 120 as described above. When the first fan (160) is driven, at least a portion of the air in the indoor space is sucked into the first case (101) through the upper suction portion (102b).

The sucked air can flow downward through the outer surface of the first fan housing 150. In detail, air flows to the second inlet portion 159b through the first inlet portion 159a of the housing suction passage 159. [ The air discharged from the second inlet portion 159b flows to the outer circumferential surface of the first filter member 120 and foreign matter filtering is performed in the process of flowing into the first filter member 120. [ The air passing through the first filter member 120 flows upward and flows into the first fan housing 150.

The second suction unit 202 of the second case 101 includes an upper suction unit 202b located on the upper side of the second filter member 220. When the second fan (260) is driven, at least a portion of the air in the indoor space is sucked into the second case (201) through the upper suction portion (202b).

The sucked air can flow downward through the outer surface of the second fan housing 250. In detail, air flows to the second inlet portion 259b through the first inlet portion 259a of the housing suction passage 259. The air discharged from the second inlet portion 259b flows to the outer circumferential surface of the second filter member 220 and foreign matter filtering is performed in the process of flowing into the first filter member 120. [ The air passing through the first filter member 120 flows upward and flows into the second fan housing 250.

FIG. 14 to FIG. 16 are views showing a state of air flow in the air cleaner according to the embodiment of the present invention. The flow of air according to the embodiment of the present invention will be briefly described with reference to FIGS. 14 to 16. FIG.

First, the flow of air in accordance with the driving of the first fan unit 100 will be described. When the first fan 160 is driven, indoor air is sucked into the first case 101 through the first suction unit 102 and the base suction unit 103. The sucked air passes through the first filter member 120, and the foreign matter in the air can be filtered during this process.

In detail, the air sucked through the lower suction portion 102a of the first suction portion 102 passes through the first filter member 120 while flowing in the inner radial direction. The air sucked through the upper suction portion 102b flows downward along the housing suction passage 159 and flows toward the outer circumferential surface of the first filter member 120, . Air sucked through the base suction part 103 flows toward the outer peripheral surface of the first filter member 120 and passes through the first filter member 120. [

The air sucked through the first suction unit 102 and the base suction unit 103 passes through the first filter member 120 and sucked in the radial direction of the first filter member 120, And then flows upward.

The air that has passed through the first filter member 120 flows upward in the radial direction while passing through the first fan 160 and passes through the first and second air guide devices 170 and 180 to provide a stable upward flow. Air that has passed through the first and second air guide apparatuses 170 and 180 passes through the first discharge guide unit 190 and flows upward through the first discharge unit 105.

The air discharged through the first discharging unit 105 is guided by the partition plate 430 located above the first discharging guide unit 190 and discharged to the outside of the air purifier 10. Particularly, the upwardly flowing air can be radially outwardly directed while flowing along the curved surface portion 444a and the facing surface portion 444b of the first plate 440 of the partition plate 430.

At this time, since the radially outermost portion of the partition plate 430 is positioned further outward than the outermost portion of the air flow path discharged through the first discharge portion 105, the radially outermost portion of the partition plate 430 is discharged from the first discharge portion 105 The upward flow of the air is restricted, and the discharge in the radial direction can be effectively guided.

On the other hand, when the second fan (260) is driven, indoor air is sucked into the second case (201) through the second suction part (202). The sucked air passes through the second filter member 220, and the foreign matter in the air can be filtered during this process.

In particular, the air sucked through the lower suction portion 202a of the second suction portion 202 flows through the second filter member 220 while flowing in the inner radial direction. The air sucked through the upper suction portion 202b flows downward along the housing suction passage 259 and flows toward the outer circumferential surface of the second filter member 220, .

In the course of air passing through the second filter member 220, the air is sucked in the radial direction of the second filter member 220 and filtered, and then flows upward.

The air that has passed through the second filter member 220 flows upward in the radial direction while passing through the second fan 260 and passes through the third air guide device 270 and the second discharge guide device 280, An upward flow is achieved. The air that has passed through the third air guide device 270 and the second discharge guide device 280 can be discharged through the second discharge portion 305 via the flow switching device 300.

At this time, when the fluid switching device 300 is in the first position lying as shown in FIGS. 14 and 15, the air discharged from the fluid switching device 300 flows upward. On the other hand, when the flow switching device 300 is in the second position as shown in FIG. 16, the air discharged from the flow switching device 300 can flow toward the front upper side. The air flow rate of the air discharged from the air cleaner 10 is increased by the flow switching device 300 and purified air can be supplied to a position far from the air cleaner 10. [

10: air cleaner 20: base
100: blower device 100: first blower device
101: first case 110: suction grill
120: first filter member 130: first filter frame
140: Support device 142: Lever device
150: first fan housing 151 to 153: first to third bodies
159: housing suction flow passage 160: first fan
170: first air guide device 180: second air guide device
186: bent portion 186a: first extending portion
186b: second extension part 190: first ejection guide device
200: second blower 201: second case
220: second filter member 230: second filter frame
250: second fan housing 251 to 253: first to third bodies
259: housing suction passage 260: second fan
270: third air guide device 280: second discharge guide device
300: Flow conversion device 400:
430: partition plate 440: first plate
450: second plate 560: lever support device

Claims (20)

A case having a suction portion;
A fan housing installed inside the case, the fan housing housing the fan;
A filter member installed on a suction side of the fan and filtering out foreign matter from the air sucked through the suction unit; And
And a housing suction flow path formed between the outer surface of the fan housing and the inner surface of the case and through which air sucked through the suction portion flows toward the filter member,
In the housing suction passage,
A first inlet having a first width; And
And a second inlet portion having a second width larger than the first width, wherein the air flows past the first inlet portion. The method according to claim 1,
In the fan housing,
A first body having a first inner width; And
And a third body having a second inner width smaller than the first inner width. 3. The method of claim 2,
In the fan housing,
Further comprising: a second body extending obliquely from the first body toward the third body so as to have a reduced inner width. The method according to claim 1,
In the suction portion,
A lower suction portion formed at a height corresponding to the filter member; And
And an upper suction portion disposed above the filter member. 5. The method of claim 4,
Wherein the housing suction passage communicates with the upper suction portion. The method according to claim 1,
The fan housing is installed above the filter member,
Wherein the air sucked through the suction portion passes through the filter member in a radial direction and flows upward toward the fan housing. The method according to claim 6,
And a filter frame supporting the filter member and coupled to the lower side of the fan housing. 8. The method of claim 7,
Wherein the filter member has a cylindrical shape,
And is slidingly coupled radially toward the filter frame. 8. The method of claim 7,
In the fan housing,
And a first incision portion supporting the filter frame. 10. The method of claim 9,
A sensor mounting part provided on the filter frame and provided with a sensor device; And
And a second incision part provided in the fan housing and supporting the sensor mounting part. 11. The method of claim 10,
The filter frame includes a frame inner wall; A frame outer wall surrounding the frame inner wall; And a housing insertion portion formed between an inner circumferential surface of the frame outer wall and an outer circumferential surface of the frame inner wall,
Wherein at least a portion of the fan housing is inserted into the housing insert. The method according to claim 1,
The suction portion is formed in a circumferential direction along an outer circumferential surface of the case,
And guides air in a direction of 360 degrees with respect to a vertical center line passing through an inner center of the case. 8. The method of claim 7,
In the filter frame,
A first frame forming a lower portion of the filter frame;
A second frame forming an upper portion of the filter frame; And
A first filter support portion extending upward from the first frame toward the second frame,
Wherein the mounting space of the filter member is defined by the first and second frames and the first filter support portion. 14. The method of claim 13,
A locking protrusion protruding radially from the inner circumferential surface of the case; And
And an engaging portion formed on the first frame and coupled to the engaging projection. 15. The method of claim 14,
In the case,
A first case having a first suction portion; And
And a second case provided above the first case and having a second suction part. 16. The method of claim 15,
In the fan housing,
A first fan housing installed inside the first case; And
And a second fan housing installed inside the second case,
The housing suction passage
Between the outer surface of the first fan housing and the inner surface of the first case, and
And an air cleaner disposed between the outer surface of the second fan housing and the inner surface of the second case. The method according to claim 1,
A base placed on the ground; And
And a suction grille coupled to the upper side of the base and supporting a lower portion of the case. 18. The method of claim 17,
A suction hole provided in the suction grille for guiding suction of air into the case; And
Further comprising: a base suction portion formed in a space between the base and the suction grille, the base suction portion guiding air to the suction hole.

A case having a cylindrical or conical shape and having a suction portion;
A fan housing installed inside the case, the fan housing housing the fan;
A filter member installed on a suction side of the fan and filtering out foreign matter from the air sucked through the suction unit; And
And a housing suction flow path formed between the outer surface of the fan housing and the inner surface of the case and through which air sucked through the suction portion flows toward the filter member,
In the housing suction passage,
A first inlet having a first width; And
And a second inlet portion having a second width larger than the first width. 20. The method of claim 19,
The width of the housing suction passage,
And the second inlet portion is configured to gradually increase in size with reference to an air flow direction from the first inlet portion toward the second inlet portion.

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