KR101809410B1 - Air cleaning apparatus - Google Patents

Abstract

The present invention relates to an air cleaning apparatus. According to an embodiment of the present invention, the air cleaning apparatus comprises: an air blowing device provided with a main fan generating an air flow; a flow conversion device having a sub-fan, and provided to rotate in a left and right or up-and-down direction; and an air guide device communicating with the flow conversion device, and guiding air to the flow conversion device.

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 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.

It is another object of the present invention to provide an air cleaner provided with a display device that can easily display operation information of an air cleaner to the outside.

Another object of the present invention is to provide an air purifier which can easily confirm operation information of an air cleaner irrespective of the rotated position of the flow switching device by providing the display device in a rotatable flow switching 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 purifier according to an embodiment of the present invention includes a blower having a main fan for generating an air flow; A flow switching device provided with a sub-fan and rotatable in the left-right direction or the up-down direction; And an air guiding device interlocked with the flow switching device and guiding air to the flow switching device.

Wherein the flow switching device includes a flow guide portion having an inlet portion through which air passing through the main fan flows and a rotation guide member; And a guide device having a first gear interlocked with the air guide device and a second gear interlocked with the rotation guide member.

When the first gear and the air guide device are interlocked, the flow guide portion and the guide device rotate in the left-right direction together. When the second gear and the rotation guide member interlock with each other, do.

The guide device includes: a guide body coupled to the flow guide portion; And a lower surface portion on which the first and second gear motors are installed.

The apparatus further includes a discharge guide device having a shaft insertion portion provided at one side of the air guide device and a rotary shaft inserted into the shaft insertion portion.

When the first gear rotates, the first gear rotates in the circumferential direction around the rotation shaft, and the rotation shaft rotates in the shaft insertion portion.

The air guide apparatus includes a first rack interlocked with the first gear.

When the first rack and the first gear cooperate, the first gear rotates with a predetermined turning radius.

The air guide device includes a shaft guide groove into which a first gear shaft of the first gear is inserted and extends in a circumferential direction.

A first bearing provided on the lower surface portion; And a bearing groove provided in the discharge guide device and into which the first bearing is inserted. When the flow switching device rotates in the left-right direction, the first bearing is moved in the bearing groove.

And a second bearing provided at a lower edge of the lower surface of the discharge guide device and disposed so as to be able to contact the inner wall of the discharge guide device. When the flow switching device rotates in the left-right direction, Move along the inner wall.

The rotation guide member includes a second rack interlocked with the second gear.

A stationary guide member provided below the rotation guide member and having a guide surface extending upward in a round manner; And a guide bearing provided at one side of the guide surface and being capable of contacting the rotation guide member.

The flow switching device further includes a first gear motor for driving the first gear and a second gear motor for driving the second gear.

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.

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, since the flow switching device is provided with the first guide mechanism for guiding the rotation in the left-right direction and the second guide mechanism for guiding the rotation in the vertical direction, the flow- The first guide mechanism can be rotated in the left and right direction while the first guide mechanism is in the first position or the second position where the first guide mechanism is in the upright position.

In addition, since the third switching device is provided in the flow switching device, the air flowing through the second blowing device can be supplied with the flow of the third fan to discharge the air. Therefore, a strong discharge airflow can be generated, so that an effect that an airflow can be reached to a position far from the air cleaner can be obtained.

Further, since the first guide mechanism or the second guide mechanism includes the gear motor and the gear, respectively, there is an advantage that the flow switching device can be easily rotated in the up-down direction or the left-right direction.

Further, a display device is provided on the upper portion of the flow switching device, so that the operation information of the air cleaner can be easily recognized on the outside. Particularly, even when the flow switching device is in a state (second position) inclined with respect to the axial direction as well as in a lying state (first position), the display device is exposed to the outside, The advantage is that it can be easily identified.

In addition, a discharge grille is provided in the flow switching device, a depression is formed in the central portion of the discharge grill, and a display device can be installed, and a discharge part for discharging air along the periphery of the depression can be formed. Usability can be improved. In addition, it is possible to prevent the air flow discharged through the discharge unit from being disturbed by the display device.

In addition, the display device includes a PCB assembly, that is, a display PCB having a first illumination source, and a reflector coupled to the display PCB, so that various characters, numbers, or symbols related to the operation of the air cleaner can be easily implemented There is an advantage that it can be.

Also, since a second illumination source is provided on the bottom surface of the display PCB, and a diffusion plate having an illumination accommodating portion accommodating the illumination source is provided on the lower side of the display PCB, light emitted from the illumination source is transmitted through the diffusion plate And can be easily moved to the front edge of the display device. As a result, a visual emphasis effect on the information displayed through the display device can be obtained, and the information can be easily confirmed even at a long distance.

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.

1 is a perspective view showing an appearance of an air cleaner according to an embodiment of the present invention.
2 is a perspective view showing the internal structure of the air cleaner according to the embodiment of the present invention.
3 is a cross-sectional view taken along line III-III 'of FIG.
4 is an exploded perspective view showing a configuration of a second blower according to an embodiment of the present invention.
5 is an exploded perspective view showing a configuration of a third air guide device and a second discharge guide device according to an embodiment of the present invention.
6 is an exploded perspective view showing a configuration of a flow switching device and a part to which the flow switching device is coupled according to an embodiment of the present invention.
7 is a perspective view showing a configuration of a flow switching device according to an embodiment of the present invention.
FIG. 8 is a view showing a combined state of the third air guide device and the second discharge guide device according to the embodiment of the present invention.
FIG. 9 is a view showing a state in which the first guide mechanism operates to rotate left and right in the flow switching device according to the embodiment of the present invention.
10 is a cross-sectional view showing a configuration of a flow switching device according to an embodiment of the present invention.
11 is an exploded perspective view showing a configuration of a flow switching device according to an embodiment of the present invention.
12 is an exploded perspective view showing the configuration of the driving unit and the fixing unit of the flow switching device according to the embodiment of the present invention.
13 is a view showing an interlocked state of the second rack and the second gear of the flow switching device according to the embodiment of the present invention.
Figs. 14 and 15 are views showing the flow switching device according to the embodiment of the present invention in a second position. Fig.
16 is a view showing a state in which the flow switching device of Fig. 14 is rotated in the A direction.
17 is an exploded perspective view showing a configuration of a display device coupled to a discharge grill according to an embodiment of the present invention.
18 is a view showing a PCB assembly coupled to a discharge grill according to an embodiment of the present invention.
19 is an exploded perspective view showing a configuration of a PCB assembly according to an embodiment of the present invention.
20 is a top view of a display device according to an embodiment of the present invention.
21 is a bottom view of a PCB assembly according to an embodiment of the present invention.
22 to 24 are views showing a state of air flow in an air cleaner according to an 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 symbols as 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;

1 is a perspective view showing an appearance of an air cleaner 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 a first separator 101a to which two parts constituting the first case 101 are coupled or separated. The first case 101 further includes a hinge (not shown) provided on the opposite side of the first separator 101a. 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. A hooking device may be provided on the part where the second parts are coupled, that is, on the opposite side of the hinge part. The latching device may include a locking protrusion or a magnet member. 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 and a plurality of the first suction portions 102 are formed along the outer circumferential surface of the first case 101, 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 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 the radial distance is rotated 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 unit 103 can be flowed upward through the suction port 112 of the suction grill 110 (see FIG. 2) 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. 2) 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 in the axial direction.

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 and a hinge part which can be separated or combined through the second separating part 201a. The second case 201 may be configured to be openable like the first case 101. For the detailed description, the description of the first case 101 is used. 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 bottom cross-sectional areas of the cases 101 and 201 are formed larger than the upper cross-sectional area, so that 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. [

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 description related to the partitioning device 400 will be described later with reference to the drawings.

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. Specifically, the flow switching device 300 may be in a lying state (first position), as shown in FIG. 1, or in a slanted state (second position), as shown in FIG. 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. 2 is a perspective view showing the internal structure of the air purifier according to the embodiment of the present invention, and FIG. 3 is a sectional view taken along line III-III 'of FIG.

2 and 3, 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 protruding upward from the outer circumferential surface of the grill body 111. Due to the structure of the grill body 111 and the rim portion, the suction grill 110 may have a stepped configuration.

The suction grill 110 includes a suction portion 112 formed at the rim portion. The suction unit 112 may be configured to protrude upward along the circumference of the rim 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 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 and second frames 131 and 132 may have a substantially ring shape.

The first filter frame 130 further includes a first filter support 135 extending upward from the first frame 131 toward the second frame 132. 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 first support cover 136 may be coupled to the outside of the first filter support 135.

A sensor device 137 may be installed in the first filter frame 130. The sensor device 137 may include a dust sensor for detecting the amount of dust in the air and a gas sensor for detecting the amount of air in the air. The dust sensor and the gas sensor may be arranged to be supported by the second frame 132 of the first filter frame 130.

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.

The first fan unit 100 further includes a first fan housing 150 installed at an outlet side of the first filter member 120. The first fan housing 150 is formed with a housing space 152 in which the first fan 160 is housed. The first fan housing 150 may be supported by the first filter frame 130.

A lower portion of the first fan housing 150 includes a first fan inlet 151 for guiding the inflow of air into the first fan housing 150. The first fan inlet 151 is provided with a grill so that when the first filter member 150 is detached, the user can prevent the user from putting his or her fingers into the first fan housing 150 have.

The first fan unit 100 further includes an ionizer for removing or sterilizing odor particles in the air. The ionizer is coupled to the first fan housing 150 and can act on the air flowing inside the first fan housing 150.

The sensor device 137 and the ionizer may also be installed in the second blower 200 to be described later. As another example, the sensor device 137 and the ionizer 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 an axial coupling portion to which the rotary shaft 165a is coupled and a first blade coupling portion that extends upward from the axial coupling portion and extends obliquely.

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

One side of the blade 163 is coupled to the first blade coupling portion of the hub 161 and the other side is coupled to the second blade coupling portion 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 first fan unit 100 further includes a first air guide unit 170 coupled to an upper side of the first fan 160 to guide the flow of air passing through the first fan 160 .

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 through which air flows is formed.

The first air guide device 170 includes a guide rib 175 disposed in the first air passage. 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 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.

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, Or the like.

The first air guiding device 100 includes a first air guiding device 170 and a second air guiding device 170. The first air guiding device 170 is disposed above the first air guiding device 170, 2 air guide device 180 is further included.

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 182). The first guide wall 181 may be disposed to surround the second guide wall 182.

A second air passage 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 of the first air guide device 170 passes through the second air passage and flows upward. The second air flow path 185 may be referred to as a "discharge flow path ". A first discharge portion 105 is disposed above the second air flow path.

A first space portion in which at least a part of the PCB device 500 is received 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 a 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 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. The first discharge guide unit 190 is formed with a first discharge unit 105 through which air is discharged.

The second fan unit 200 includes a second filter unit 220, a support unit 240 for supporting a lower portion of the second filter unit 220, A second filter member 220 and a lever device 242 for supporting the support device 240 (see FIG. 4).

The second blower further includes a lever support device 560 for supporting the lever device 242. The lever support device 560 has a substantially annular shape. The lever support device 560 includes a third space portion that defines an installation space where the PCB device 500 can be placed. The third space portion is formed at a substantially central portion of the lever supporting device 560.

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 a first space portion 448 passing through the process of the air discharged from the first discharge portion 105 of the first discharge guide device 190 to the outside of the air cleaner 10 do. The upper space constitutes a second space portion 458 as a holding space for allowing a user to insert a hand when the user moves the air cleaner 10. [

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.

4 is an exploded perspective view showing a configuration of a second blower according to an embodiment of the present invention.

4, a second air blowing apparatus 200 according to an embodiment of the present invention includes a lever supporting device 560, a lever device 242, a supporting device 240, a second filter member 220, 2 filter frame 230, a second fan housing 250, and a second fan 260. [

The second filter member 220 may have a cylindrical shape with an open top. The second filter member 220 includes a filter body 221 having a hollow cylindrical filter portion and a filter hole 222 formed at an upper end of the filter body 221. A filter grasping portion 221a is provided on an upper portion or a lower portion of the filter main body 221. [ Air may be introduced into the filter body 221 through the outer circumferential surface of the filter body 221 and may be discharged from the second filter member 220 through the filter hole 222. The configuration of the second filter member 220 may also be used for the first filter member 120. [

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 provides a second space portion 458 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. The movement guide portions 565 may be spaced apart from each other in the circumferential direction of the lever supporting body 561. The lever support device 560 further includes a support protrusion 566 projecting upward from the inner circumferential surface of the lever support body 5610. The support protrusion 566 protrudes upward from the second blower 200, Thereby supporting the lever device of the vehicle.

The lever device 242 may be provided so as to be operable by a user. For example, the lever device 242 may be provided to be rotatable in the circumferential direction.

The lever device 242 includes a lever body 243 having a substantially ring shape and being rotatably provided. The lever body 243 is formed with a plurality of cutouts 145 disposed at positions corresponding to the plurality of movement guide portions 565. The plurality of cutouts 145 can be understood as through holes formed in the lever body 243.

The cutouts 245 are spaced apart from one another and arranged in the circumferential direction of the lever body 243. Each cutout portion 245 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 243.

The lever device 142 is supported on the upper surface of the lever supporting body 561. When the lever device 242 is supported by the lever support body 561, the plurality of movement guide parts 565 may be inserted into the plurality of cutouts 245. In detail, the plurality of movement guide portions 565 may protrude upward from the plurality of cut-out portions 245 through the plurality of cut-out portions 245.

The length of each cutout portion 245 may be longer than the length of the movement guide portion 565. Accordingly, in a state in which the movement guide portion 565 is inserted into the cutout portion 245, the lever device 242 can be rotated. One end portion of the movement guide portion 565 may interfere with one end portion of the cutout portion 245 while the lever device 242 rotates in one direction, The other end of the guide portion 565 may interfere with the other end of the cutout portion 245.

On the outer peripheral surface of the lever body 243, a second handle 244 is provided.

On the upper side of the lever device 242, a supporting device 240 for supporting the second filter member 220 is provided. The support device 240 includes a first handle 241 coupled to the second handle 244. The user can grasp the first and second handles 241 and 244 to rotate the lever body 143 and the supporting device 140 clockwise or counterclockwise.

The lever device 242 supports the lower surface of the support device 240. The support device 240 may be provided with a support protrusion (not shown) that contacts the movement guide portion 565. The support protrusion may protrude downward from a lower surface of the support device 240 and may be provided at a position corresponding to the movement guide portion 565. The shape of the support protrusion corresponds to the shape of the movement guide portion 565 and includes an inclined surface formed to protrude gradually in the circumferential direction.

The direction in which the movement guide part 565 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 direction in which the movement guide portion 565 gradually protrudes is counterclockwise, the direction in which the support protrusion gradually protrudes may be clockwise.

The support protrusion may be disposed at a position corresponding to the cut-out portion 245. That is, the movement guide portion 565 and the support protrusion may be disposed at a position where the movement guide portion 565 and the support protrusion are inserted into the cutout portion 145.

The lever device 242 and the support device 240 may be rotated together. In this rotation process, the movement guide portion 565 and the support protrusion can be interfered. Specifically, when the lower portion of the support projection and the upper portion of the movement guide portion 565 abut, the lever device 242 and the support device 240 are lifted upward. The first filter member 220 supported by the support device 240 is coupled to the first fan unit 200 while moving upward.

The lever device 242 and the support device 240 can be moved in the same direction as the guide protrusion 565 when the upper part of the support protrusion is in contact with the lower part of the movement guide part 565 or the interference between the support protrusion part and the movement guide part 565 is released, Comes down. The first filter member 220 supported by the support device 240 is in a detachable state (released state) from the first fan device 100.

The second fan unit 200 further includes a second filter frame 230 that forms a mounting space for the second filter member 220. In detail, the second filter frame 230 includes a first frame 231 forming a lower portion of the first filter frame 230 and a second frame 232 forming an upper portion of the second filter frame 230 ).

The first frame 231 includes a frame depression 231a having a shape that is downwardly recessed. The frame depression 231a may be configured such that at least a portion of the first frame 231 is recessed. The groove 114 provides a space through which the first and second handles 241 and 244 can move. The first and second handles 241 and 244 are located in the space and can be rotated clockwise or counterclockwise.

The second frame 232 is spaced upward from the first frame 231. The second frame 232 has a substantially ring shape. The ring-shaped inner space of the second frame 232 forms at least a part of the air passage passing through the second filter frame 230. The upper portion of the second frame 232 may support the second fan housing 250.

The second filter frame 230 further includes a second filter support portion 235 extending upward from the first frame 231 toward the second frame 232. The first and second frames 231 and 232 may be spaced from each other by the second filter support part 235. A plurality of second filter supports 235 may be provided and the plurality of second filter supports 235 may be arranged in the circumferential direction and connected to the rims of the first and second frames 231 and 232.

The mounting space of the second filter member 220 is defined by the first and second frames 231 and 232 and the plurality of second filter supports 235. The first support portion cover 236 may be coupled to the outside of the second filter support portion 235.

A second sensor device 237 may be installed in the second filter frame 230. The sensor device 237 may include a dust sensor 237a for detecting the amount of dust in the air and a gas sensor 237b for detecting the amount of air in the air. The dust sensor 237a and the gas sensor 237b may be arranged to be supported by the second frame 232 of the second filter frame 230. [ The description of the configuration of the second sensor device 237 may be applied to the first sensor device 137 as well.

In the mounting space, the second filter member 220 may be detachably mounted. The first filter member 220 has a cylindrical shape and air can be introduced through the outer circumferential surface of the second filter member 220. In the process of passing through the second filter member 220, impurities such as fine dust in the air can be filtered.

Since the first filter member 220 has a cylindrical shape, air can flow in any direction with respect to the first filter member 220. 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 220. The first filter member 220 may be slidably received in the mounting space during the mounting process. On the contrary, the second filter member 220 can be slidably drawn out from the mounting space in the separation process.

In other words, when the first and second handles 241 and 244 are operated while the first filter member 220 is placed on the upper surface of the supporting device 240, the second filter member 220 moves downward Off position. Then, the second filter member 220 is slid radially outward, and can be separated from the mounting space.

Meanwhile, the second filter member 220 is slid radially inward toward the mounting space, separated from the mounting space, and supported on the upper surface of the supporting device 240, (241, 244). At this time, the first filter member 220 is positioned at the coupling position with the first blower 200.

The second fan unit 200 further includes a second fan housing 250 installed on an outlet side of the second filter unit 220. The second fan housing 250 is formed with a housing space 252 in which the second fan 260 is housed. Since the second fan housing 250 and the second fan 260 have the same configuration as the first fan housing 150 and the first fan 160, The description of the second fan 260 is based on the description of the first fan housing 150 and the first fan 160.

The second fan apparatus 200 further includes an ionizer 258 for removing or sterilizing airborne odor particles. The ionizer 258 is coupled to the first fan housing 250 and can act on the air flowing inside the second fan housing 250. The ionizer 258 may have the same configuration as the ionizer of the first blower 100.

FIG. 5 is an exploded perspective view showing a configuration of a third air guide device and a second discharge guide device according to an embodiment of the present invention, and FIG. 6 is a perspective view of the flow switching device and the flow switching device according to the embodiment of the present invention FIG. 7 is a perspective view showing a configuration of a flow switching device according to an embodiment of the present invention, and FIG. 8 is a perspective view showing a configuration of a third air guide device and a second discharge guide device according to an embodiment of the present invention. FIG. 9 is a view showing a state in which the first guide mechanism operates to rotate the flow switching device in the left-right direction according to the embodiment of the present invention, and FIG. 10 is a cross- Sectional view showing the configuration of the flow switching device.

5 to 10, a second fan unit 220 according to an embodiment of the present invention is coupled to an upper portion of the second fan 260, And a third air guide device 270 for guiding the first air guide device 270. [

The third air guiding device 270 includes an outer wall 271 forming an outer circumferential surface of the third air guiding device 270 and an outer wall 271 located inside the outer wall 271, And an inner wall 272 forming an inner peripheral surface. A first air flow path 272a through which air flows is formed between the inner circumferential surface of the outer wall 271 and the outer circumferential surface of the inner wall 272.

The third air guide device 270 includes a guide rib 275 disposed in the first air passage 272a. The guide ribs 275 extend from the outer circumferential surface of the inner wall 272 to the inner circumferential surface of the outer wall 271.

The third air guide device 270 further includes a motor receiving portion 273 extending downward from the inner wall 272 to receive the second fan motor 265. The motor receiving portion 273 may have a bowl shape whose diameter decreases toward the lower portion.

The second fan motor 265 is coupled to the second fan 260 to provide a driving force to the second fan 260. A motor coupling part 266 is provided at one side of the second fan motor 265 and the motor coupling part 266 connects the second fan motor 265 to the third air guide device 270 Guide it to be fixed.

The third air guiding device 270 includes guide devices 276 and 277 for guiding the movement of the flow switching device 300. The guide devices 276 and 277 include a first rack 276 and a shaft guide groove 277 provided in the motor accommodating portion 273.

The first rack 276 is understood to be a structure for guiding the rotation of the flow switching device 300 in the left and right directions in cooperation with the first gear 360 of the flow switching device 300. The first rack 276 is provided on the inner circumferential surface of the motor receiving portion 273 and may extend in the circumferential direction according to a set curvature. The length of the first rack 276 may be set to a predetermined length based on a distance that is interlocked with the first gear 360.

The flow switching device 300 may be rotated in the left-right direction. Here, the "rotation in the horizontal direction" may mean rotation in the clockwise or counterclockwise direction with respect to the vertical direction. In this process, the first gear 360 rotates about the rotation axis 354 of the flow switching device 300 with a predetermined turning radius.

The shaft guide groove 277 is a groove that guides the rotation of the first gear 360, and is conceived as a configuration that rounds to a predetermined curvature. For example, the shaft guide groove 277 may be formed to be rounded in the circumferential direction. That is, the shaft guide groove 277 may have a circular arc shape.

The first gear shaft 362 of the first gear 360 may be inserted into the shaft guide groove 277. The first gear shaft 362 may be moved along the shaft guide groove 277 in the course of the rotation of the first gear 360.

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 .

The second discharge guide device 280 may have a substantially annular shape. In detail, the second discharge guide device 280 is provided with a discharge outer wall 281 having a cylindrical shape and forming an outer peripheral surface of the second discharge guide device 280, and a second discharge guide wall 280 located inside the discharge outer wall 281, And a discharge inner wall 282 having a cylindrical shape and forming the inner circumferential surface of the second discharge guide device 280.

The discharge outer wall 281 is disposed so as to surround the discharge inner wall 282. A second air passage 282a is formed between the inner peripheral surface of the discharge outer wall 281 and the outer peripheral surface of the discharge inner wall 282 to allow air to flow through the third air guide device 270, That is, a discharge path is formed. The discharge passage may be located above the first air passage 272a in which the guide ribs 275 are provided.

The second discharge guide device 280 further includes a second discharge grill 288 disposed in the discharge passage 282a. The second discharge grill 288 extends from the outer peripheral surface of the discharge inner wall 282 to the inner peripheral surface of the discharge outer wall 281. By the second discharge grill 288, it is possible to prevent the user from putting the finger under the discharge passage 282a.

The second discharge guide device 280 further includes a rotation guide plate 283 coupled to the discharge inner wall 282. The rotation guide plate 283 may extend from the inner circumferential surface of the discharge inner wall 282 toward the inner center of the second discharge guide device 280.

The rotation guide plate 283 includes an axis inserting portion 284 for providing the rotational center of the flow switching device 300 in the lateral direction. The rotation shaft 354 can be inserted into the shaft insertion portion 284. The shaft insertion portion 284 may be located at an inner center portion of the second discharge guide device 280. The rotation guide plate 283 may be understood as a support plate for supporting the shaft insertion portion 284.

The rotation guide plate 283 further includes a bearing groove 285. In the bearing groove 285, a first bearing 353 provided in the flow switching device 300 may be inserted. The bearing groove 285 is understood to be a configuration which is rounded to a curvature set as a groove for guiding the movement of the first bearing 353. For example, the bearing groove 285 may be formed to be rounded in the circumferential direction. That is, the bearing groove 285 may have a circular arc shape.

The first bearing 353 may be inserted into the bearing groove 285 to move in the rotation direction of the fluid switching device 300 and thus the first bearing 353 may be inserted into the bearing groove 285, The frictional force can be reduced.

The flow switching device 300 includes a third fan housing 310 in which a third fan 330 is accommodated. The third fan housing 310 has a substantially annular shape. In detail, the third fan housing 310 includes a housing cover 312 which forms an outer appearance.

On the inside of the housing cover 312, a housing main body 311 having an annular shape is provided. That is, the housing cover 312 is coupled to the outer circumferential surface of the housing main body 311 and can be supported by the housing main body 311.

The first fan 160 and the second fan 260 may be referred to as a "main fan", and the third fan 330 may be referred to as a "sub-fan". In other words, the first and second fans 160 and 260 may be referred to as a " blower fan "and the third fan 330 may be referred to as a" flow transition fan ".

The housing main body 311 includes a cover supporting portion 311a which protrudes from the outer circumferential surface of the housing main body 311 and supports the inside of the housing cover 312. [ The cover supporting portion 311a has a bent shape and the outer surface of the cover supporting portion 311a can be coupled to the inner surface of the housing cover 312. [

The housing cover 312 is disposed to surround the housing body 311, and the housing body 311 and the housing cover 312 can be rotated or moved together. The third fan 330 is accommodated in the housing body 311. A housing flow path 314 through which air flows by driving the third fan 330 is formed in the inner space of the housing main body 311. The blade 333 of the third fan 330 may be positioned in the housing passage 314. By the rotation of the blade 333, air can flow upward through the housing passage 314. The housing passage 314 extends from the space where the blades 333 are located to a space above the blades 333.

A discharge grill 315 is formed on the third fan housing 310 to form a second discharge portion 305 through which air having passed through the third fan 330 is discharged. 17, the discharge grill 315 is provided with a grill outer wall 316, a grill inner wall 317 provided on the inner side of the grill outer wall 316, and a grill outer wall 316 provided from the grill outer wall 316. [ And a plurality of grill portions 315a extending to the grill portion 317 are included. A space between the plurality of grill portions 315a forms the second discharge portion 305. [

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.

The grill outer wall 316 and the grill inner wall 317 may each have a cylindrical shape and the grill outer wall 316 may be disposed to surround the inner wall 317 of the grill. The second discharge portion 305 may be formed on the housing passage 314. Therefore, the air passing through the housing passage 314 can be discharged to the outside of the air cleaner 10 via the second discharge portion 305 of the discharge grill 315.

The discharge grille 315 further includes a depressed portion 318 having a shape recessed in a substantially central portion of the discharge grille 315 and supporting the display device 600. The depressed portion 318 may be provided at a lower end of the inner wall 317 of the grill.

The depression 318 is provided with a support rib 318a for supporting the display PCB 610 of the display device 600. [ The supporting rib 318a may protrude upward from the upper surface of the depression 318. [ The grill inner wall 317 may support the lower side of the display PCB 610.

The display device 600 includes a PCB assembly 601. The PCB assembly 601 includes a display PCB 610 provided with an illumination source, and a display unit 610 coupled to the display PCB 610. The display PCB 610 is connected to the PCB assembly 601, A reflector 620 for concentrating light radiated from the discharge grill 315 upward and a refractor 620 supported by the discharge grill 315 and refracting the light emitted from the light source to illuminate the upper surface of the display device 600, And a diffusion plate 630 for guiding the diffusion plate 630 toward the edge portion 650 of the substrate.

The third fan 330 may include an axial flow fan. In detail, the third fan 330 may be operated to discharge the axially introduced air axially. That is, the third fan (330) passes through the second fan (260), the first air passage (272a) of the third air guide device (270) and the discharge passage (282a) of the second discharge guide device May be discharged from the third fan 330 and discharged to the outside through the second discharge portion 305 located on the upper side of the third fan 330. [

The third fan 330 includes a hub 331 having a shaft coupling portion to which a rotary shaft 336 of a third fan motor 335 that is an axial fan motor is coupled and a plurality of The blade 333 is included. The third fan motor 335 is coupled to the lower side of the third fan 330 and may be disposed inside the third motor housing 337.

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 includes a flow guide part coupled to a lower side of the third fan housing 310 and guiding air passing through the second discharge guide device 280 to the third fan housing 310 320). The flow guide part 320 includes an inlet grill 325 for guiding the inflow of air into the third fan housing 310. The inlet grill 325 may have a concave shape downward.

The shape of the second discharge grill 288 of the second discharge guide device 280 is concave downwardly corresponding to the shape of the inflow grill 325. The inflow grill 325 may be seated above the second discharge grill 288. With such a construction, the inflow grill 325 can be stably supported on the second discharge grill 288.

The flow switching device 300 is provided with a rotation guide device 350 installed below the flow guide part 320 and guiding rotation of the flow switching device 300 in the left and right direction and rotation in the up and down directions . The rotation in the left and right direction may mean rotation in the clockwise or counterclockwise direction with respect to the axial 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 unit 350 includes a guide body 351 coupled to the flow guide unit 320. The guide body 351 includes a lower face portion 351a on which the first and second guide mechanisms are installed and a frame portion 351b provided on an edge of the lower face portion 351a and protruding downward.

The rotation guide device 350 is provided with a first guide mechanism for guiding rotation of the flow switching device 300 in the first direction and a second guide mechanism for guiding rotation of the flow switching device 300 in the second direction And a guide mechanism.

In detail, 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 first gear motor 363 may include a motor capable of rotating in both directions.

The first gear 360 is coupled to the motor shaft 363a of the first gear motor 363. The first guide mechanism is provided with a first gear shaft 362 extending downward from the first gear 360, that is, toward the third air guide device 270 or the second discharge guide device 280 .

The first gear 360 is gear-engaged with the first rack 276 of the third air guide device 270. A plurality of gears are formed in the first gear 360 and the first rack 276. When the first gear motor 363 is driven, the first gear 360 rotates and interlocks with the first rack 276. At this time, since the third air guide device 270 has a fixed structure, the first gear 360 can be moved along the first rack 276.

The shaft guide groove 277 of the third air guide device 270 can guide the movement of the first gear 360. In detail, the first gear shaft 362 can be inserted into the shaft guide groove 277. The first gear shaft 362 may be moved in the circumferential direction along the shaft guide groove 277 during the rotation of the first gear 360.

The first guide mechanism further includes a rotation shaft 354 constituting a rotation center of the flow switching device 300. The first gear 360 and the first gear shaft 362 may be rotated with a rotation radius set around the rotation axis 354. At this time, the set turning radius is called "first turning radius ".

The first rack 276 and the shaft guide groove 277 may have a length corresponding to the rotation amount or the rotation angle of the flow switching device 300. In detail, the circumferential length of the first rack 276 and the shaft guide groove 277 may be formed to be slightly larger than the circumferential distance in which the flow switching device 300 rotates. Accordingly, it is possible to prevent the first gear 360 from being detached from the first rack 276 while the first gear 360 is moving. In addition, it is possible to prevent the first gear shaft 362 from interfering with the end of the shaft guide groove 277 during the movement of the first gear shaft 362.

The rotation shaft 354 may be provided on a lower surface 351a of the guide body 351. [ In detail, the rotary shaft 354 may protrude downward from the lower surface 351a. The rotation shaft 354 is inserted into the shaft insertion portion 284 of the second discharge guide device 280 and can be rotated in the shaft insertion portion 284.

That is, when the first gear 360 rotates, the first gear shaft 362 and the first gear 360 rotate in the circumferential direction around the rotation shaft 354. The rotation shaft 354 is rotated in the shaft insertion portion 284. Accordingly, the flow switching device 300 can be rotated in the first direction, that is, clockwise or counterclockwise, with the longitudinal direction as the axial direction.

The first guide mechanism further includes bearings (353, 355) for facilitating rotation of the flow switching device (300) in the first direction. The bearings 353 and 355 may reduce the frictional force generated during the rotation process of the fluid switching device 300.

The bearings 353 and 355 include a first bearing 353 provided on a lower surface 351a of the guide body 351. For example, the first bearing 353 may include a ball bearing. The first guide mechanism further includes a bearing support portion 354 protruding downward from the lower surface portion 351a to support the first bearing 353.

The bearing support portion 354 is formed to have a predetermined length and guides the first bearing 353 to be disposed at a position where the first bearing 353 can contact the rotation guide plate 283.

The rotation guide plate 283 includes a bearing groove 285 into which the first bearing 353 is inserted. The first bearing 353 may be inserted into the bearing groove 285 and moved in the process of rotating the flow switching device 300 in the first direction.

At this time, the first bearing 353 may be rotated at a predetermined rotation radius around the rotation shaft 354. At this time, the set turning radius is referred to as "second turning radius ". The second rotation radius may be smaller than the first rotation radius. That is, the distance from the rotation shaft 354 to the first bearing 353 may be shorter than the distance from the rotation shaft 354 to the first gear shaft 362. According to this configuration, the lower surface portion 351a can be stably supported by the third air guide device 270 and the second discharge guide device 280 and rotated.

When the first gear shaft 362 moves along the shaft guide groove 277, the first bearing 353 can be moved along the bearing groove 285. In order to smoothly move the first gear shaft 362 and the first bearing 353, the curvature of the shaft guide groove 277 and the curvature of the bearing groove 285 may be the same.

The bearings 353 and 355 further include the second bearings 355. The second bearing 355 may be rotatably installed on the rim 351b. A bearing insertion portion 351c to which the second bearing 355 is coupled may be formed in the rim portion 351b. The bearing insertion portion 351c may be recessed upward from the bottom surface of the rim 351b. A plurality of the second bearings 355 may be provided.

The second bearing 355 may be provided so as to be capable of contacting the discharge inner wall 282 of the second discharge guide device 280. In other words, the inner peripheral surface of the discharge inner wall 282 may be provided on the second bearing 355 Can be formed. The second bearing 355 rotates around the rotation axis 354 along the inner circumferential surface of the discharge inner wall 282 so that the flow switching device 300 can be easily rotated in the first direction.

With reference to Fig. 9, the first direction rotation of the flow switching device 300 will be briefly described.

When the first gear motor 363 is operated, the first gear 360 can be rotated. The first gear motor 363 rotates clockwise or counterclockwise when viewed from above, and the first gear 360 can rotate clockwise or counterclockwise correspondingly.

For example, when the first gear motor 363 rotates clockwise, the first gear 360 and the first gear shaft 362 can move counterclockwise along the shaft guide groove 277 . On the other hand, when the first gear motor 363 rotates counterclockwise, the first gear 360 and the first gear shaft 362 can move clockwise along the shaft guide groove 277 .

According to the movement of the first gear 360 in the clockwise or counterclockwise direction, the flow switching device 300 can rotate in the same direction as the moving direction of the first gear 360. In this process, the first bearing 353 moves along the bearing groove 285, and the second bearing 355 moves along the inner peripheral surface of the discharge inner wall 282.

By such an action, the flow switching device 300 can be stably rotated along a predetermined path in the left-right direction.

FIG. 11 is an exploded perspective view showing the configuration of the flow switching device according to the embodiment of the present invention, FIG. 12 is an exploded perspective view showing the configuration of the drive part and the fixing part of the flow switching device according to the embodiment of the present invention, FIG. 5 is a view showing an interlocked state of a second rack and a second gear included in the flow switching device according to the embodiment of the present invention; FIG.

Referring to FIGS. 7, 11 and 12, the flow switching device 300 according to the embodiment of the present invention includes a second guide mechanism for guiding rotation of the flow switching device 300 in the up and down direction.

In detail, the second guide mechanism includes a fixing guide member 352 fixed to the guide body 351. The center shaft 354 may be provided on a lower surface of the fixed guide member 352.

The fixed guide member 352 includes a first guide surface 352a that supports the lower side of the rotation guide member 370 and guides the rotation of the rotation guide member 370 in the second direction. The first guide surface 352a forms at least a part of the upper surface of the fixed guide member 352 and may extend upward to correspond to the rotation path of the rotation guide member 370.

A first guide bearing 359 which is provided in the fixed guide member 352 so as to be able to contact the rotation guide member 370 and can reduce the frictional force generated when the rotation guide member 370 is rotated, . The first guide bearing 359 may be positioned on the side of the first guide surface 352a.

The stationary guide member 352 further includes a second gear insertion portion 352b through which the second gear 365 can be inserted for rotation of the rotation guide member 370. [ The second gear insertion portion 352b is formed on one side of the first guide surface 352a. For example, the second gear insertion portion 352b may be formed by cutting at least a portion of the first guide surface 352a.

The second gear 365 is positioned below the first guide surface 352a and at least a portion of the second gear 365 passes through the second gear insertion portion 352b, And may be configured to protrude above the portion 352b.

The second guide mechanism further includes a second gear motor (367) coupled to the second gear (365) to provide a driving force. For example, the second gear motor 367 may include a step motor. The second gear motor 367 may include a motor capable of bi-directional rotation.

The second guide mechanism further includes a second gear shaft (366) extending from the second gear motor (367) to the second gear (365). The second gear shaft 366 may protrude laterally from the second gear motor 367. When the second gear motor 367 is driven, the second gear shaft 366 and the second gear 365 may be rotated together.

The second guide mechanism further includes a rotation guide member 370 disposed on the upper side of the fixed guide member 352 and rotatable in the vertical direction. The rotation guide member 370 may be coupled to the lower portion of the flow guide unit 320.

In detail, the rotation guide member 370 includes a body portion 371 supported by the fixed guide member 352. The body portion 371 includes a second guide surface 372 that moves along the first guide surface 352a. The second guide surface 372 may be rounded downward corresponding to the curvature of the first reverse surface 352a.

The rotation guide member 370 is provided with a second guide bearing 375 which is provided so as to be able to contact with the fixed guide member 352 and can reduce the frictional force generated when the rotation guide member 370 rotates . The second guide bearing 375 is located on the side of the second guide surface 372 and can move along the first guide surface 352a in the course of the rotation of the rotation guide member 370. [

The rotation guide member 370 further includes a second rack 374 interlocked with the second gear 365. A plurality of gears are formed in the second gear 365 and the second rack 374 and the second gear 365 and the second rack 374 are gear- .

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 have. Therefore, the flow switching device 300 can perform the second direction rotation according to the movement of the rotation guide member 370.

Referring to Fig. 13, the second direction rotation of the flow switching device 300 will be briefly described.

When the second gear motor 367 is operated, the second gear 365 can be rotated. The second gear motor 367 rotates clockwise or counterclockwise with respect to the radial direction, and the second gear 365 rotates clockwise or counterclockwise correspondingly.

For example, when the second gear motor 367 rotates clockwise, the second gear 365 rotates in a clockwise direction and the second rack 374 rotates counterclockwise with the second gear 365, It can rotate clockwise. As the second rack 374 rotates, the rotation guide member 370 and the flow guide unit 320 can rotate together. As a result, the fan housing 310 can rotate in a counterclockwise direction.

On the other hand, when the second gear motor 367 rotates counterclockwise, the second gear 365 rotates in a counterclockwise direction and the second rack 374 is coupled to the second gear 365 So that it can rotate clockwise. As the second rack 374 rotates, the rotation guide member 370 and the flow guide unit 320 can rotate together. As a result, the fan housing 310 can rotate clockwise.

By this action, the flow switching device 300 can be stably rotated along a predetermined path in the vertical direction.

FIGS. 14 and 15 are views showing a state where the flow switching device according to the embodiment of the present invention is in the second position, and FIG. 16 is a view showing a state where the flow switching device of FIG.

14 and 15 show a state in which the flow switching device 300 is protruded upward from the second discharge guide device 280, that is, when the rotation guide member 370 is rotated upward to rotate the fan housing 310 (Second position) that is raised upward. On the other hand, Figs. 1 and 2 show a state in which the fluid switching device 300 is lying (first position).

That is, the flow switching device 300 is operable to rotate up and down in the direction of "B" shown in Fig. 14, and may be in the first position or the second position. When the flow switching device 300 is in the first position, the inlet grill 325 is seated on the upper surface of the second discharge grill 288. On the other hand, when the flow switching device 300 is in the second position, the inlet grill 325 may be spaced upward from the upper surface of the second discharge grill 288.

The third fan 330 may selectively operate depending on whether the flow switching device 300 is in the first position or the second position.

In detail, in a state where the flow switching device 300 is in the first position, the first and second fans 160 and 260 may rotate to generate an air flow. Air suction and discharge (first flow) at the lower portion of the air cleaner 10 can be generated by operation of the first fan 160. Air suction and discharge (second flow) at the upper portion of the air cleaner 10 can be generated by operation of the second fan 260. The first flow and the second flow may be separated by the partitioning device (400).

The third fan 330 may be selectively operated. When the third fan 330 is operated, the second flow can be generated more strongly. That is, the second fan (260) and the third fan (330) generate a strong discharge airflow in the upper portion of the air cleaner (10) and can be discharged through the second discharge portion (305). Of course, the third fan 330 may not operate.

Meanwhile, in a state where the flow switching device 300 is in the second position, the first and second fans 160 and 260 may rotate to generate the first and second flows. The third fan 330 may operate.

At least part of the air discharged through the discharge passage 282a of the second discharge guide unit 280 flows into the third fan housing 310 through the operation of the third fan 330, And may be discharged from the second discharge portion 305 through the third fan 330. [ By this action, the purified air can reach a position far from the air cleaner 10 (see FIG. 24).

In addition, the flow switching device 300 may be rotated in the left-right direction with respect to the axial direction in the second position. 14 shows a state where the flow switching device 300 is positioned to look in one direction (reference in FIG. 14, left direction) in the second position, FIG. 16 shows a state in which the flow switching device 300 is positioned in the other direction ).

The one direction may be a direction toward the left 45 degrees about the front of the air cleaner 10 and the other direction may be a direction toward the right 45 degrees around the front of the air cleaner 10. [ That is, the rotation angle of the flow switching device 300 may be about 90 degrees.

As described above, since the flow switching device 300 can be rotated in the lateral direction with respect to the axial direction, there is an effect that the discharge airflow can be transmitted to a long distance in various directions around the air cleaner 10.

FIG. 17 is an exploded perspective view showing a configuration of a display device coupled to a discharge grill according to an embodiment of the present invention, FIG. 18 is a view showing a PCB assembly coupled to a discharge grill according to an embodiment of the present invention, 19 is an exploded perspective view showing a configuration of a PCB assembly according to an embodiment of the present invention, FIG. 20 is a top view of a display device according to an embodiment of the present invention, FIG. 21 is a cross- Figure 5 is a view showing the bottom configuration of an assembly.

17 to 21, a display device 600 according to an embodiment of the present invention may be installed on the upper portion of the air cleaner 10. The display screen 602 of the display device 600 may form at least a part of the upper surface of the air cleaner 10.

The display device 600 may be installed in the discharge grill 315. A plurality of grill portions 315a may extend from the depression 318 toward the outside in the radial direction at a substantially central portion of the discharge grill 315 . The display device 600 may be disposed above the depression 318.

The display device 600 includes a PCB assembly 601. The PCB assembly 601 includes a display PCB 610 having a plurality of light sources 651 and 655 and a display PCB 610 coupled to an upper side of the display PCB 610 to receive light emitted from the plurality of light sources 651, And a reflector 620 concentrating the light toward the screen 602.

The plurality of illumination sources 651 and 655 are provided with a first illumination source 651 for displaying the operation information of the air cleaner 10 and a second illumination source 651 for displaying the edge of the display screen 602 of the display device 600. [ And an illumination source 655 are included. The display screen 602 is formed on the upper surface of the display device 600 as a predetermined area (hereinafter referred to as a display area) where the information can be displayed. The rim of the display screen 602 may form a boundary of the display area.

The display PCB 610 includes a substantially circular substrate body 611. The substrate main body 611 includes a main body front portion 611a on which the first illumination source 651 is installed and a main body rear portion 611b on which the second illumination source 655 is installed.

A plurality of first illumination sources 651 may be provided on the main body front portion 611a corresponding to the shape of the displayed contents. A plurality of the second illumination sources 655 may be provided, and the plurality of second illumination sources 655 may be disposed along the rim of the main body rear portion 611b. For example, the plurality of second illumination sources 655 may be arranged in a circular shape.

The reflector 620 includes a reflector body 621 and a through hole 623 formed in the reflector body 621 and concentrating the light emitted from the first light source 651 upward. The reflector body 621 may be formed of an opaque material having a limited light transmission or may be coated with the opaque material.

On the upper side of the reflector 620, a reflector film 625 is provided. The reflector film 625 includes a pattern display section 626 displaying the contents of information to be displayed, that is, a predetermined letter, number, or symbol. The light concentrated through the reflector 620 acts on the glyph display unit 625 to implement predetermined information. The pattern display unit 626 may be made of a transparent material.

For example, as shown in FIG. 19, the pattern display section 626 is provided with 888 patterns capable of displaying characters such as "odor", "dust", "fine dust" And a symbol representing the strength of the light.

The first illumination source 651 may be disposed at a position corresponding to the glyph display unit 626. For example, the first illumination source 651 may be disposed below the glyph display unit 626. A plurality of the glance display units 626 may be provided to correspond to the plurality of glance display units 626 because the glance display unit 626 includes a plurality of patterns. Light emitted from the first illumination source 651 may be transmitted through the glaze display unit 626 and exposed to the outside. Various information can be displayed by on / off control of the first illumination sources 651.

The display device 600 includes a diffusion plate 630 surrounding the outside of the PCB assembly 601. The diffusion plate 630 can be understood as a configuration for forming the rim 650 of the display screen 622 by diffusing the light emitted from the second illumination source 655.

The diffusion plate 630 may be disposed along the rim of the depression 318. The diffusing plate 630 is provided with a plate body 631 disposed to surround the display PCB 610 and a light guide plate 631 protruding from the inner circumferential surface of the plate body 631 and provided with the second light source 655 Receiving portion 635 is included. The plate body 631 may have a ring shape and may be supported by the discharge grill 315. The plate body 631 and the illumination accommodating portion 635 may be integrally formed.

The plate body 631 and the light receiving portion 635 may be made of a translucent material capable of refracting or diffusing light. For example, the plate body 631 and the illumination accommodating portion 635 may be made of acrylic material.

The plate body 631 may form a rim 650 of the display screen 622. The upper portion of the plate body 631 may be exposed on the upper surface of the air cleaner 10 and the light emitted from the second illumination source 655 may be incident on the upper surface of the air- And is diffused through the main body 631. The diffused light may move to the upper portion of the air cleaner 10 to form the rim 650.

Since the plate body 631 and the illumination accommodating portion 635 are made of a translucent material, the edge portion 650 can be realized as a soft light. Therefore, a comfortable display screen can be formed.

The display device 600 further includes a display cover 600 provided on the PCB assembly 601. The display cover 640 can be understood as a configuration for supporting the outside of the display PCB 610 and for keeping the cover film 645 flat. The display cover 640 may be made of an opaque material to prevent transmission of light.

In the display cover 640, a cover hole 641 having a shape corresponding to the reflector film 625 is formed. The cover hole 641 allows the reflector film 625 to be exposed upward even if the display cover 640 is coupled to the reflector 620.

On the upper side of the display cover 640, a cover film 645 is provided. For example, the cover film 645 may be attached to the upper surface of the display cover 640. The cover film 645 may be made of a semi-transparent material to transmit only a part of the light transmitted from the PCB assembly 601. As an example, the translucent material may include acrylic or polymethyl methacrylate resin (PMMA). By providing the cover film 645, information displayed through the display device 600 can be prevented from being excessively realized.

The cover film 645 is provided with a film display portion 646 for inputting a predetermined command by the user or displaying some operation information among a plurality of operation information of the air cleaner 10.

22 to 24 are views showing a state of air flow in an air cleaner according to an embodiment of the present invention.

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 the course of air passing through the first filter member 120, air is sucked in the radial direction of the first filter member 120, filtered, 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.

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 the course of air passing through the second filter member 220, the air is sucked in the radial direction of the first filter member 120, 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 160 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.

The flow switching device 300 may be vertically rotatable by a second guide mechanism. For example, as shown in FIGS. 22 to 24, when the fluid switching device 300 is in the first position, the air discharged from the fluid switching device 300 flows upward.

On the other hand, when the fluid switching device 300 is in the second position, the air discharged from the fluid switching device 300 may 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. [

More specifically, when the third fan 330 of the flow switching device 300 is driven, at least a part of the air discharged from the second discharge guide device 280 flows into the third fan housing 310 Can be introduced. The introduced air may pass through the third fan 330 and may be discharged to the outside through the second discharging unit 305.

On the other hand, the flow switching device 300 can be rotated in the left-right direction by the first guide mechanism in the second position. For example, as shown in FIGS. 14 and 15, when the flow switching device 300 is directed upward, the air discharged through the second discharge portion 305 may flow upward. On the other hand, as shown in FIG. 16, when the flow switching device 300 is directed to the rear upper side, the air discharged through the second discharge portion 305 may flow upward toward the rear side.

According to such an operation, the air discharged from the air cleaner 10 can be directed to the front, not merely upward, so that an airflow directed toward the space relatively far from the air cleaner 10 can be generated. In addition, since the third switching device 330 is provided in the flow switching device 300, the blowing force of the discharged air can be increased.

In addition, since the flow switching device 300 can perform the first direction rotation, it is possible to discharge air to both sides of the front side of the air cleaner 10, thereby providing airflow toward a relatively large indoor space The effect can be seen.

Depending on the mode of operation of the air purifier 10, the flow switching device 300 may selectively operate. When the air purifier 10 is operated in the normal operation mode (first operation mode), as shown in FIGS. 22 and 23, the flow switching device 300 is in the first position lying down. Then, the first and second fan units 100 and 200 are driven, and a plurality of independent airflows can be formed.

That is, when the first fan unit 100 is driven, air is sucked through the first suction unit 102 and the base suction unit 103, and the first filter member 120 and the first fan 160 and may be discharged through the first discharge portion 105. [ When the second fan unit 200 is driven, air is sucked through the second suction unit 202, passes through the second filter unit 220 and the second fan 260, The third fan 330 can be operated. Then, it can be discharged upward through the second discharge portion 305. At this time, the third fan 330 may be turned off. Of course, the third fan 330 may be driven to strongly form the discharge air stream toward the second discharge portion 305.

Meanwhile, the flow switching device 300 may change the air flow direction in both forward directions of the air cleaner 10 while rotating in the first direction in the first position.

24, when the air cleaner 10 is operated in the flow switching mode (the second operation mode), the flow switching device 300 rotates upward and flows through the air purifier 10, As shown in Fig. On the other hand, in the flow switching mode, the driving of the first and second fan units 100 and 200 may be the same as that of the first and second fan units 100 and 200 in the normal operation mode.

The third fan 330 is driven so that at least a portion of the air that has passed through the discharge passage 282a of the second fan 260 and the second discharge guide device 280 is discharged to the outside 3 fan housing 310 as shown in FIG. At least a part of the introduced air may be discharged toward the upper side or the rear side of the air cleaner 10 while passing through the third fan 330.

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 160: first fan
170: first air guide device 180: second air guide device
190: first discharge guide device 200: second blower
201: second case 220: second filter member
230: second filter frame 250: second fan housing
260: second fan 270: third air guide device
280: second discharge guide device 300: flow switching device
310: third fan housing 320: flow guide part
330: third fan 350: rotation guide device
400: Blocking device 430:
600: Display device 610: Display PCB
620: Reflector 630: Reflector

Claims (12)

A blower having a main fan for generating an air flow;
A flow switching device provided with a sub-fan and rotatable in the left-right direction or the up-down direction;
An air guide device interlocked with the flow switching device, through which air passing through the main fan flows; And
And a discharge guide device which is disposed at an outlet side of the air guide device and transfers the air having passed through the air guide device to the flow switching device,
In the flow switching device,
A flow guide portion having an inlet portion through which air passing through the main fan flows and a rotation guide member; And
A first gear interlocked with the air guide device, a second gear interlocked with the rotation guide member, and first and second gears provided at one side of the flow guide portion and inserted into the shaft insertion portion, A guide device is provided which is provided on the undersurface thereof,
When the first gear and the air guide device are interlocked with each other, the flow guide portion and the guide device rotate in the left and right directions together,
And the flow guide portion is rotated in a vertical direction when the second gear and the rotation guide member interlock with each other. delete delete The method according to claim 1,
When the first gear rotates,
Wherein the first gear rotates in a circumferential direction about the rotation shaft, and the rotation shaft rotates in the shaft insertion portion. The method according to claim 1,
In the air guide apparatus,
And a first rack interlocked with the first gear. 6. The method of claim 5,
When the first rack and the first gear interlock with each other,
Wherein the first gear rotates with a predetermined turning radius. The method according to claim 1,
In the air guide apparatus,
Wherein the first gear shaft of the first gear is inserted, and the shaft guide groove is roundly extended in the circumferential direction. The method according to claim 1,
A first bearing provided on the lower surface portion; And
And a bearing groove provided in the discharge guide device and into which the first bearing is inserted,
Wherein the first bearing is moved inside the bearing groove when the flow switching device rotates in the lateral direction. The method according to claim 1,
And a second bearing which is provided on the lower surface of the lower surface and is disposed so as to be able to contact the inner wall of the discharge guide device,
Wherein the second bearing moves along the inner wall of the discharge guide device when the flow switching device rotates in the lateral direction. The method according to claim 1,
In the rotation guide member,
And a second rack interlocked with the second gear. The method according to claim 1,
A stationary guide member provided below the rotation guide member and having a guide surface extending upward in a round manner; And
And a guide bearing provided at one side of the guide surface and being capable of contacting the rotation guide member. The method according to claim 1,
In the flow switching device,
Further comprising a first gear motor for driving the first gear and a second gear motor for driving the second gear.

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