KR102552844B1 - Air cleaner - Google Patents

Abstract

An object of the present invention is to provide an air purifier that secures a large air volume and a fast flow rate of discharged air and has improved aesthetics in terms of product design.
An air purifier according to an embodiment of the present invention includes a housing; a blowing fan provided inside the housing; an annular discharge passage constituting a path through which the air inside the housing flowing by the blowing fan is discharged to the outside, having a circular or annular discharge end, and formed inside the housing; and an adjusting unit controlling an opening area of the discharge end.

Description

Air purifier {AIR CLEANER}

The present invention relates to an air purifier, and more particularly, to an air purifier capable of rapidly circulating indoor air.

The air purifier according to the prior art has a structure in which air is blown through a discharge port opened in a circular or polygonal shape on the front or top of the product.

The air purifier according to the prior art may have a large air volume per unit time due to the wide opening area of the discharge port, but has the disadvantage that the flow rate of the discharged air is slow and the speed of circulating indoor air is slow. In order to increase the flow rate, the fan It is necessary to increase the number of revolutions of the fan, but there is a disadvantage in that noise is generated due to the increase in the number of revolutions of the fan.

On the other hand, when the area of the discharge port is narrowed in order to solve this disadvantage, there is a disadvantage in that the air circulation rate is rather lowered because the air volume is small and the air is discharged in a small area.

The present invention has been made to solve at least some of the problems of the prior art as described above, and as one aspect, an object of the present invention is to provide an air purifier capable of adjusting the flow rate and discharge form of discharged air.

In addition, as one aspect, an object of the present invention is to provide an air purifier that secures a large air volume and high flow rate of discharged air and has improved aesthetics in terms of product design.

In addition, as one aspect, an object of the present invention is to provide an air purifier capable of using the entire area of a filter in a balanced manner.

As one aspect for achieving at least some of the above objects, the present invention provides a housing; a blowing fan provided at a lower part of the inside of the housing; an annular discharge passage constituting a path through which the air inside the housing flowing by the blowing fan is discharged to the outside, having a circular or annular discharge end, and formed inside the housing; an adjusting unit controlling an opening area of the discharge end; and a filter member disposed in the annular discharge passage, wherein the housing has an air intake portion at a lower portion through which external air is sucked into the inside, and a discharge side of the blowing fan is disposed below the annular discharge passage so that the annular discharge passage is disposed below the annular discharge passage. Air is introduced into the lower end of the discharge passage, the filter member is rotatable in the circumferential direction of the annular discharge passage, and the filter member includes an air concentration section disposed between the lower discharge side of the blowing fan and the annular discharge passage. and the filter member is periodically rotated when the blowing fan is operated, thereby providing an air purifier in which the air concentration section is periodically changed.

In one embodiment, the control unit may be configured to adjust the outer diameter (outer diameter) of the discharge end.

In order to implement this operation, in one embodiment, the controller may include a plurality of cover plates provided outside the discharge end and movable in a radial direction of the discharge end.

In addition, the control unit, an annular rotating frame for supporting the plurality of cover plates are arranged at equal intervals along the outer periphery of the discharge end and each cover plate is rotatable in a radial direction of the discharge end; and an annular fixing frame for rotating the plurality of cover plates according to the rotation of the rotating frame.

Here, a rotating shaft rotatably coupled to the rotating frame is provided at one end of the cover plate, and a guide projection is provided at the other end of the cover plate, and the guide projection is inserted into the fixing frame to slide And a guide groove extending in a radial direction of the fixing frame may be formed.

In addition, in one embodiment, the control unit may further include a frame driving member for adjusting the rotation angle of the rotation frame by rotating the rotation frame.

Meanwhile, in one embodiment, the annular discharge passage may be formed such that its cross-sectional area becomes narrower toward the discharge end from the inside of the housing.

To this end, in one embodiment, a circular discharge opening is formed on one surface of the housing, and an air guide disposed at the center of the discharge opening and extending into the housing to form the annular discharge passage is provided. It can be.

In one embodiment, the air guide may be configured in a shape in which an outer diameter increases toward the discharge opening from the inside of the housing.

In addition, in one embodiment, the air guide extends from one surface to the other surface of the housing and is configured in a hollow trumpet shape, and an opening corresponding to the hollow of the air guide is formed on the other surface of the housing, so that the housing A through hole passing from one surface to the other surface may be formed via the air guide.

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Here, the filter member may have a shape surrounding the circumference of the air guide.

In addition, the inner surface of the filter member may be configured to be spaced apart from the outer surface of the air guide.

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In order to implement this operation, in one embodiment, a driving unit for rotating the filter member in a circumferential direction is provided, and the driving unit includes an annular driven frame fastened to one end of the filter member, and the driven frame in a circumferential direction. It may include a filter driving member that rotates in the direction.

Meanwhile, in another embodiment, a filter member may be disposed on an air intake side of the blowing fan to purify air introduced into the blowing fan.

Meanwhile, in one embodiment, a grill member provided at the discharge end and guiding the discharge air may be provided.

Also, in another embodiment, a display unit provided to cover the hollow of the air guide and displaying an operating state or having a control button may be provided.

According to one embodiment of the present invention having such a configuration, it is possible to obtain an effect of adjusting the flow rate and discharge type of discharged air by adjusting the area of the air discharge port.

In addition, according to one embodiment of the present invention, the entire area of the cylindrical filter can be used in a balanced manner, so that the lifespan of the cylindrical filter can be improved.

In addition, according to one embodiment of the present invention, it is possible to obtain an effect of securing a high flow rate and a large air volume of discharged air.

1 is a front perspective view of an air purifier according to a first embodiment of the present invention.
2 is a rear perspective view of an air purifier according to a first embodiment of the present invention.
3 is a front view of an air purifier according to a first embodiment of the present invention.
4 is a side view of an air purifier according to a first embodiment of the present invention.
5 is a rear view of the air purifier according to the first embodiment of the present invention.
6 is an exploded perspective view of an air purifier according to a first embodiment of the present invention.
7 is a side cross-sectional view of an air purifier according to a first embodiment of the present invention.
8 is a perspective view of a grill member included in the air cleaner according to the first embodiment of the present invention.
9 is a front perspective view of an air purifier according to a second embodiment of the present invention.
10 is a front cross-sectional view showing the internal configuration of an air purifier according to a third embodiment of the present invention.
11 is a perspective view of a driving unit included in an air purifier according to a third embodiment of the present invention.
12 is a front view and a side cross-sectional view showing the discharge end of the air cleaner according to the fourth embodiment of the present invention in a completely opened state.
13 is a front view and a side cross-sectional view showing the discharge end of the air cleaner according to the fourth embodiment of the present invention in a partially closed state.
14 is a view showing a state in which the control unit included in the air purifier according to the fourth embodiment of the present invention is installed inside the housing.
15 is a perspective view showing an operating state of a control unit included in an air purifier according to a fourth embodiment of the present invention.
16 is an exploded perspective view of a control unit included in an air purifier according to a fourth embodiment of the present invention.
17 is a view showing the operating state of the cover plate of the control unit included in the air purifier according to the fourth embodiment of the present invention.
18 is a view showing the operating state of the cover plate of the control unit included in the air purifier according to the fourth embodiment of the present invention.
19 is a front perspective view of an air purifier according to a fifth embodiment of the present invention.
20 is a side cross-sectional view of a display unit included in an air cleaner according to a fifth embodiment of the present invention.

Terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Also, in this specification, singular expressions include plural expressions unless the context clearly indicates otherwise.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

<Example 1>

First, with reference to Figs. 1 to 8, the first embodiment of the present invention will be described.

1 to 8, the air purifier 100 according to an embodiment of the present invention includes a housing 110, a blowing fan 130, an annular discharge passage 140, a filter member 150, and a grill. A member 170 may be included.

The housing 110 constitutes the exterior of the air purifier 100 according to an embodiment of the present invention, and can provide an internal space in which the blowing fan 130 and the filter member 150 can be installed. An annular discharge passage 140 may be formed there.

In one embodiment, the housing 110 may be configured to include a front cover 112 and a rear cover 114, as shown in Figure 6, the front cover 112 and the rear cover 114 are combined with each other It is possible to provide an internal space in which the blowing fan 130 and the filter member 150 can be installed.

In addition, the housing 110 may be provided with an air intake unit 117 through which external air is sucked into the housing 110 . In one embodiment, the air intake unit 117 may be provided on the front and rear surfaces of the housing 110 corresponding to the fact that the blower fan 130 to be described later is a type capable of suction in both directions, but is not limited thereto.

In addition, in one embodiment, a pollution level sensor 120 capable of measuring the pollution level of indoor air may be provided on an outer surface of the housing 110 .

The blowing fan 130 is provided inside the housing 110, and during operation, outside air is sucked into the housing 110 and flows through an annular discharge passage 140 to be described later through the discharge end 142. A flow of air may be generated to be discharged to the outside again.

Such a blowing fan 130 may introduce air into the annular discharge passage 140 from at least one of the upper, lower, and side directions of the annular discharge passage 140 to be described later.

In the embodiments 1 to 5 of the present invention shown in FIGS. 1 to 20, the discharge side of the blowing fan 130 is disposed below the annular discharge passage 140 to introduce air into the lower end of the annular discharge passage 140. Although disclosed, it is not limited thereto.

Meanwhile, in one embodiment, the blowing fan 130 may be configured as a centrifugal fan capable of exhibiting high static suction pressure and air volume performance.

In this case, the blowing fan 130 may be configured as a type capable of sucking air in both directions, but is not limited thereto.

The annular discharge passage 140 is formed inside the housing 110 and constitutes a path through which the air inside the housing 110 flowing by the blowing fan 130 is discharged to the outside of the housing 110 .

The annular discharge passage 140 may be formed such that a circular or annular discharge end 142 , that is, an end of the passage is disposed on one surface of the housing 110 .

In one embodiment, the annular discharge passage 140 is formed inside the housing 110 in a horizontal direction or inclined upward or downward toward the front of the housing 100 so that the discharge end 142 is disposed on the front surface of the housing 110. It can be. Through this, the annular discharge passage 140 may be formed in a cylindrical shape lying horizontally inside the housing 110 as a whole.

Here, the discharge end 142 of the annular discharge passage 140 is disposed to be exposed on the front surface of the housing 110 and functions as an air outlet through which the air inside the housing 110 is discharged to the room, and the annular discharge passage 140 It is formed in an annular shape according to the shape of the end of the.

Meanwhile, as shown in the cross-sectional view of FIG. 7 , the annular discharge passage 140 is formed in a shape in which the cross-section becomes narrower toward the discharge end 142 from the inside of the housing 110 .

In order to form such an annular discharge end 142, an air guide 180 may be provided inside the housing 110 in one embodiment.

The air guide 180 may extend into the housing 110 to form an annular discharge passage 140 .

Specifically, a discharge opening 113 opened in a circular shape may be formed on one surface of the housing 110, and the air guide 180 has one end disposed at the center of the discharge opening 113 and the other end of the housing 110. It may extend to the inside to form an inner diameter (內徑, inner diameter) of the annular discharge passage 140 .

At this time, the gap between the rim of one end of the air guide 180 and the discharge opening 113 constitutes the discharge end 142 of the annular discharge passage 140 .

In addition, the space between the outer surface of the air guide 180 and the inner wall of the housing 110 or the space between the outer surface of the air guide 180 and the filter member 150 to be described later constitutes the annular discharge passage 140. do.

In addition, the air guide 180 may be configured in a shape in which an outer diameter increases from the other end to one end in order to form a shape in which the cross-sectional area of the annular discharge passage 140 becomes narrower toward the discharge end 142 .

Also, in one embodiment, the air guide 180 may extend from one surface to the other surface of the housing 110 and may be configured in a hollow trumpet shape.

At this time, an opening 115 corresponding to the hollow of the other end of the air guide 180 may be formed on the other surface of the housing 110, and the other end of the air guide 180 may be connected to an edge of the opening 115.

Through this structure, a through hole 182 penetrating from one surface to the other surface via the air guide 180 can be formed in the housing 110 .

On the other hand, the air guide 180 is not limited to the shape in which the outer diameter increases from the other end to one end as described above, but if the annular discharge passage 140 is formed so that the cross-sectional area becomes narrower toward the discharge end 142, it is configured in any shape. It is free to be

For example, the air guide 180 may be configured in a cylindrical shape having the same diameter at both ends, and the inner wall of the housing 110 or the shape of the filter member 150 may be formed to become narrower toward one end of the air guide 180, , The air guide 180 is configured in a form in which the outer diameter becomes smaller as it goes from the other end to one end, and the shape of the inner wall of the housing 110 or the filter member 150 increases toward one end of the air guide 180. It may be formed to be smaller with a larger change amount than the change amount of the outer diameter.

The filter member 150 is disposed in the annular discharge passage 140 and can purify air flowing into or flowing into the annular discharge passage 140 .

The filter member 150 may be composed of various functional filters capable of removing large dust, fine dust, viruses, odors, etc. contained in the air passing therethrough. In addition, the filter member 150 may be composed of a single filter having one air purifying function, or may be composed of a filter assembly in which a plurality of filters each having the above various functions are overlapped.

Meanwhile, in one embodiment, the filter member 150 may be configured in a cylindrical shape surrounding the circumference of the air guide 180 .

Here, the air discharged from the blowing fan 130 can pass through the filter member 150 around the filter member 150 and flow into the annular discharge passage 140 .

At this time, if a sufficient distance is not secured between the filter member 150 and the air guide 180, filter resistance increases and air does not pass smoothly through the filter member 150. In one embodiment, the filter member ( 150) is preferably configured such that the inner surface is spaced apart from the outer surface of the air guide 180 by a predetermined distance or more. Here, the separation distance between the inner surface of the filter member 150 and the outer surface of the air guide 180 may be set to various values according to the design specifications of the device.

Also, here, the interval between the filter member 150 and the air guide 180 may constitute an annular discharge passage 140 .

Meanwhile, although not shown, in another embodiment, the filter member may be disposed on the air intake side of the blowing fan 130 to purify the air introduced into the blowing fan 130 . As described above, this filter member is not made of a cylindrical shape disposed in the annular discharge passage 140, but a flat one disposed between the air intake part 117 and the air intake side of the blowing fan 130 inside the housing 110. It may be made in a plate shape.

In another embodiment of the present invention, the cylindrical filter member 150 may be excluded from the annular discharge passage 140 .

The grill member 170 is provided at the discharge end 142 and may guide air discharged from the discharge end 142 .

In one embodiment, the grill member 170 may include a plurality of guide blades 172 provided at regular intervals at the annular discharge end 142 and extending long along the discharge direction of the discharge air.

The grill member 170 can increase the linear reach of the discharged air by adding straightness to the airflow of the discharged air or by making the discharged air flow into a swirling flow through the shape of the plurality of guide blades 172 .

In contrast, in the case where the discharge end 142 is simply annularly opened without the grill member 170, the air discharged from the discharge end 142 diffuses in the radial direction of the discharge end 142.

As described above, in the air purifier 100 according to an embodiment of the present invention, the air flowing along the annular discharge passage 140 increases in flow rate as the air flows to the discharge end 142, and discharges air with a fast flow rate. can make it For reference, it can be seen through Bernoulli's theorem that the flow velocity increases when air passes through a channel with a narrow cross-sectional area.

In addition, in the air purifier 100 according to an embodiment of the present invention, the air discharged at a high flow rate from the discharge end 142 is separated from the air present inside the through hole 182 and the outside of the discharge end 142. By generating flow in the air, high air volume performance can be demonstrated.

Specifically, since the air discharged from the discharge end 142 has a relatively lower pressure than the surrounding air, that is, the air inside the through hole 182 and the air outside the discharge end 142 due to a high flow rate, the through hole 182 ) The air inside and the air outside the discharge end 142 flow toward the discharge air side having a relatively low pressure.

Through this, the air purifier 100 according to an embodiment of the present invention can secure a fast flow rate and a large air volume.

<Example 2>

9 is a front perspective view of the air purifier 100 according to the second embodiment of the present invention.

Referring to FIG. 9 , unlike the air purifier 100 according to the first embodiment of the present invention, the housing 110 of the air purifier 100 according to the second embodiment of the present invention may be configured in a rectangular box shape.

That is, the air purifier 100 according to various embodiments of the present invention is not limited to a round shape in which the outer shape of the housing 110 corresponds to the annular discharge end 142 as shown in FIGS. 1 to 8 9, the discharge end 142 is maintained in an annular shape, but the outer shape of the housing 110 may be configured in various shapes.

In addition, in order to configure a simple appearance of the device, the air intake unit 117 may be excluded from the front of the housing 110 and formed on the side of the housing 110.

<Example 3>

An air purifier 100 according to a third embodiment of the present invention will be described with reference to FIGS. 10 and 11 .

Here, FIG. 10 is a front cross-sectional view showing the internal structure of the air purifier 100 according to the third embodiment of the present invention, and FIG. 11 is a perspective view of the driving unit 160.

As shown in FIGS. 10 and 11 , in one embodiment of the present invention, the filter member 150 is configured in a shape surrounding the annular discharge passage 140 so that a part of the circumferential direction of the blowing fan 130 It is disposed between the discharge side and the annular discharge passage 140, and may be configured to be rotatable in the circumferential direction of the annular discharge passage 140.

In one embodiment, since the blowing fan 130 blows air from one side of the annular discharge passage 140, the filter member 150 has an air concentration section disposed between the blowing fan 130 and the annular discharge passage 140. (S) can occur.

Here, the air concentration section (S) is a part of the circumference of the filter member 150 disposed closest to the blowing fan 130, and the air discharged from the blowing fan 130 travels through the filter member 150 in a substantially straight line shape. This is the part through which the largest amount of air is concentrated.

In this structure, when the blowing fan 130 is operated for a long time, the air is concentrated only in a specific part of the filter member 150, and the amount of dust collected in the part where the air is concentrated is larger than in other parts, so the filter member 150 The lifespan becomes partially non-uniform, and the air treatment performance may be deteriorated.

To solve this problem, the air purifier 100 according to the third embodiment of the present invention is configured so that the air concentration section S is periodically changed by periodically rotating the filter member 150 when the blowing fan 130 operates. can

To this end, in one embodiment, a driving unit 160 for rotating the filter member 150 in a circumferential direction may be provided inside the housing 110 .

In one embodiment, as shown in FIG. 11, the drive unit 160 is fastened to one end of the filter member 150 and includes an annular driven frame 162 rotatably installed in the housing 110 in the circumferential direction. and a filter driving member 165 for rotating the driven frame 162 in a circumferential direction.

For example, a driven gear 163 may be provided at the edge of the driven frame 162 as shown in FIG. 11, and the filter driving member 165 is a power transmission gear meshed with the gear of the driven frame 162 ( 166) and a motor member 167 for rotating the power transmission gear 166, but is not limited thereto.

On the other hand, the air purifier 100 according to the third embodiment of the present invention includes a control unit (not shown) for controlling the filter driving member 165, and the control unit controls the operating time, operating speed, and contamination sensor of the blowing fan 130. The air concentration section S may be changed by periodically rotating the filter member 150 based on the measurement value of 120, but is not limited thereto.

<Example 4>

An air purifier 100 according to a fourth embodiment of the present invention will be described with reference to FIGS. 12 to 18 .

Here, FIG. 12 shows a state in which the discharge end 142 of the air purifier 100 according to the fourth embodiment of the present invention is completely open, FIG. 13 shows a partially closed state, and FIG. 14 shows an adjustment state. A state in which the unit 190 is installed on the inner circumference of the housing 110, and FIG. 15 shows an operating state of the control unit 190, FIG. 16 is an exploded perspective view of the control unit 190, and FIGS. 17 and 18 The operating state of the cover plate 192 of the control unit 190 is shown.

As shown in FIGS. 12 to 18, the air purifier 100 according to the fourth embodiment of the present invention includes a control unit 190 that adjusts the opening area of the discharge end 142 or shields the discharge end 142. can include more.

In one embodiment, the control unit 190 may be configured to adjust the outer diameter (outer diameter) of the discharge end 142 . That is, the control unit 190 may be configured to adjust the opening area of the annular discharge end 142 by reducing or increasing the outer diameter of the discharge end 142 .

In order to implement this operation, in one embodiment, the control unit 190 includes a case 191, a plurality of cover plates 192, a rotating frame 193, a fixed frame 194 and a frame driving member 195. can include

The case 191 may receive a plurality of cover plates 192 , a rotating frame 193 , a fixed frame 194 , and a frame driving member 195 and support them inside the housing 110 . The shape and structure of the case 191 is not particularly limited, and a plurality of cover plates 192, a rotating frame 193, a fixed frame 194, and a frame driving member 195 are supported inside the housing 110. It may be made of any shape and structure that can be made.

In one embodiment, the case 191 may include a hole 191a having a larger diameter than the discharge end 142 to extend the annular discharge passage to the discharge opening 113 formed in the front cover 112. there is.

In addition, in one embodiment, a limit guide 191b may be provided on the inside of the case 191 to limit the movement distance of the limit protrusion 193b provided on the rotating frame 193 to be described later.

The plurality of cover plates 192 are installed inside the case 191, are provided outside the discharge end 142, and may be configured to be movable in a radial direction of the discharge end 142.

The plurality of cover plates 192 cover a part of the discharge end 142 while moving in the radial direction of the discharge end 142, so that the outer diameter of the discharge end 142 can be adjusted.

In one embodiment, the plurality of cover plates 192 may be arranged at regular intervals along the outer periphery of the discharge end 142 to form an annular shape as a whole.

To this end, in one embodiment, the cover plate 192 may be configured in the form of a flat and curved bar, and a plurality of cover plates 192 may be arranged to partially overlap each other, as shown in FIG. .

In addition, the cover plate 192 may have a rotating shaft 192a at one end and a guide protrusion 192b at the other end. Here, the rotating shaft 192a may be configured in the form of a protrusion protruding from one surface of the cover plate 192, and the guide protrusion 192b may be configured in the form of a protrusion protruding from the other surface of the cover plate 192.

In this configuration, the rotation shaft 192a of the cover plate 192 may be rotatably fastened to the shaft hole 193a of the rotation frame 193, and the guide protrusion 192b of the cover plate 192 is a fixed frame ( 194) may be slidably fastened to the guide groove 194a along the longitudinal direction of the guide groove 194a.

The rotating frame 193 may be configured in an annular shape and may be provided rotatably in a circumferential direction inside the case 191 .

The rotating frame 193 is disposed on one surface of the plurality of cover plates 192, and the plurality of cover plates 192 are arranged at equal intervals along the outer edge of the discharge end 142, and each cover plate 192 It may be supported so as to be rotatable in the radial direction of the discharge end 142 .

In one embodiment, the rotation frame 193 may have shaft holes 193a into which rotation shafts 192a of the plurality of cover plates 192 may be fastened.

In addition, in one embodiment, a frame gear for receiving rotational force of the frame driving member 195 may be provided at an edge of the rotating frame 193 .

In addition, in one embodiment, a limit protrusion 193b for limiting the rotation angle of the rotation frame 193 by the limit guide 191b of the case 191 may be provided at an edge of the rotation frame 193 . The limit protrusions 193b may be hung on both ends of the limit guide 191b to limit the rotation angle of the rotation frame 193 so that the rotation frame 193 rotates only within the range of the limit guide 191b.

The fixing frame 194 is disposed on the other surface of the plurality of cover plates 192, and according to the rotation of the rotation frame 193, the plurality of cover plates 192 can be rotated based on each rotation axis 192a. .

To this end, a guide groove 194a into which the guide protrusion 192b of the cover plate 192 is slidably inserted may be formed in the fixing frame 194 . Guide groove (194a) may be formed in the form of a long groove extending in the radial direction of the fixing frame (194).

In this configuration, when the rotating frame 193 is rotated, the plurality of cover plates 192 fastened to the rotating frame 193 through the rotating shaft 192a move according to the rotational direction of the rotating frame 193 .

At this time, since the guide protrusions 192b of the plurality of cover plates 192 are fastened to the guide grooves 194a of the fixing frame 194, the rotation shaft 192a is fastened by the rotation of the rotation frame 193. In order to compensate for the change in the distance between the guide groove 194a to which the guide projection 192b is fastened, the plurality of cover plates 192 maintain the state in which the guide projection 192b is fastened to the guide groove 194a. It is possible to rotate in the radial direction of the discharge end 142 while still doing so.

Here, when the plurality of cover plates 192 are rotated in the radial direction of the discharge end 142, the outer diameter of the discharge end 142 is adjusted according to the diameter of the circular opening formed by the inner corners of the plurality of cover plates 192 It becomes.

For example, when the rotation frame 193 is rotated in one direction, a plurality of cover plates 192 are disposed as shown in FIG. 17 to increase the outer diameter of the discharge end 142, and the rotation frame 193 in the other direction When rotated as shown in FIG. 18, the plurality of cover plates 192 are arranged so that the outer diameter of the discharge end 142 can be reduced.

In one embodiment, the plurality of cover plates 192 are configured so that the diameter of the circular opening formed by the inner edge can be adjusted to a size equal to or smaller than the inner diameter of the discharge end 142, so that the discharge end 142 is airtight. It can also be shielded.

Meanwhile, the frame driving member 195 is provided inside the case 191 and can adjust the rotation angle of the rotation frame 193 by rotating the rotation frame 193 .

For example, the frame drive member 195 may include a rotation gear 195a meshed with the frame gear 193c of the rotation frame 193 and a step motor 195b rotating the rotation gear 195a. However, it is not limited thereto, and may be composed of any mechanical element capable of rotating the rotating frame 193.

Meanwhile, the air purifier 100 according to the fourth embodiment of the present invention as described above can change the flow characteristics of the discharged air by adjusting the opening area of the discharge end 142 through the control unit 190.

Specifically, as shown in FIG. 13, when a part of the discharge end 142 is closed, as shown in FIG. 12, the flow rate of discharged air is narrower than when the discharge end 142 is completely open. This can be relatively fast.

In addition, as shown in FIG. 13, when the discharge end 142 is partially closed, the air discharge shape becomes narrower than when the discharge end 142 is completely open as shown in FIG. It is more effective when blowing far away in a narrow range.

<Example 5>

Finally, with reference to FIGS. 19 and 20, the air purifier 100 according to the fifth embodiment of the present invention will be described. 19 is a front perspective view of the air purifier 100 according to the fifth embodiment of the present invention, and FIG. 20 is a side cross-sectional view showing the display unit 200 included in the air purifier 100 according to the fifth embodiment of the present invention. am.

19 and 20, the air purifier 100 according to the fifth embodiment of the present invention is provided to cover the hollow of the air guide 180, and displays or controls the operating state of the air purifier 100. A display unit 200 having buttons may be further included.

That is, the air purifier 100 according to the fifth embodiment of the present invention, unlike the air purifier 100 according to the first to fourth embodiments of the present invention shown in FIGS. 1 to 18, has a through hole ( 182), a circular display unit 200 covering the through hole 182 may be provided.

The air purifier 100 according to the fifth embodiment of the present invention uses the through hole 182 formed as an empty space as a display and a control panel, so that the housing 110 does not need to have a separate display unit and control buttons. It has the advantage of improving the design aesthetics of the device by configuring a simple appearance.

Meanwhile, in the above, embodiments 1 to 5 of the present invention have been separately described as different embodiments, but the air purifier 100 of the present invention is a combination of at least one or more of the above-described embodiments 1 to 5. can be implemented in the form

Although the present invention has been shown and described with respect to specific embodiments, those skilled in the art will variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the claims below. We want to make it clear that it can be done.

100: air purifier 110: housing
112: front cover 113: discharge opening
114: rear cover 115: opening
117: air intake unit 120: pollution degree sensor
130: blowing fan 140: annular discharge passage
142: discharge end 150: filter member
S: air concentration section 160: drive unit
162: driven frame 163: driven gear
165: filter driving member 166: power transmission gear
167: motor member 170: grill member
172: guide wing 180: air guide
182: through hole 190: control unit
191 case 191a hole part
191b: limit guide 192: blanking plate
192a: rotation shaft 192b: guide protrusion
193: rotation frame 193a: shaft hole
193b: limit projection 193c: frame gear
194: fixed frame 194a: guide groove
195: frame drive member 195a: rotation gear
195b: step motor 200: display unit

Claims (19)

housing;
a blowing fan provided at a lower part of the inside of the housing;
an annular discharge passage constituting a path through which the air inside the housing flowing by the blowing fan is discharged to the outside, having a circular or annular discharge end, and formed inside the housing;
an adjusting unit controlling an opening area of the discharge end; and
Including; a filter member disposed in the annular discharge passage,
The housing is provided with an air intake portion at the bottom through which external air is sucked into the inside,
The blowing fan has a discharge side disposed below the annular discharge passage so that air flows into the lower end of the annular discharge passage,
The filter member is rotatable in a circumferential direction of the annular discharge passage,
In the filter member, an air concentration section disposed between the discharge side of the blowing fan at the lower side and the annular discharge passage occurs,
The air purifier in which the air concentration section is periodically changed by periodically rotating the filter member when the blowing fan is operated.
According to claim 1,
The air purifier configured to adjust the outer diameter (outer diameter) of the discharge end.
According to claim 1,
The air purifier including a plurality of cover plates provided on the outside of the discharge end and movable in a radial direction of the discharge end.
According to claim 3,
the controller,
an annular rotating frame in which the plurality of cover plates are arranged at equal intervals along the outer circumference of the discharge end and support each cover plate to be rotatable in a radial direction of the discharge end; and
An air purifier comprising a; annular fixing frame for rotating the plurality of cover plates according to the rotation of the rotating frame.
According to claim 4,
A rotation shaft rotatably coupled to the rotation frame is provided at one end of the cover plate, and a guide protrusion is provided at the other end of the cover plate,
The guide protrusion is inserted into the fixing frame to be slidable, and a guide groove extending in a radial direction of the fixing frame is formed.
According to claim 4,
The air purifier further comprises a frame driving member for adjusting the rotation angle of the rotation frame by rotating the rotation frame.
According to claim 1,
The air purifier wherein the annular discharge passage is formed such that its cross-sectional area becomes narrower toward the discharge end from the inside of the housing.
According to claim 7,
A discharge opening opened in a circular shape is formed on one surface of the housing,
and an air guide disposed at a center of the discharge opening and extending into the housing to form the annular discharge passage.
According to claim 8,
The air purifier is configured in a form in which an outer diameter of the air guide increases toward the discharge opening from the inside of the housing.
According to claim 9,
The air guide extends from one surface to the other surface of the housing and is configured in a hollow trumpet shape,
An opening corresponding to the hollow of the air guide is formed on the other surface of the housing, and a through hole is formed in the housing through the air guide from one surface to the other surface.
delete According to claim 8,
The filter member has a shape surrounding the circumference of the air purifier.
According to claim 12,
The filter member is an air purifier configured such that an inner surface is spaced apart from an outer surface of the air guide.
delete delete According to claim 1,
Further comprising a driving unit for rotating the filter member in the circumferential direction,
The driving unit includes an annular driven frame fastened to one end of the filter member, and a filter driving member for rotating the driven frame in a circumferential direction.
According to claim 1,
An air purifier comprising a filter member disposed on an air intake side of the blowing fan to purify air flowing into the blowing fan.
According to claim 1,
The air purifier further comprises a grill member provided at the discharge end and guiding discharged air.
According to claim 10,
The air purifier further includes a display unit provided to cover the hollow of the air guide and displaying an operating state or having a control button.

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