KR20210132893A - Air purifier - Google Patents

Abstract

According to an embodiment of the present invention, an air purifier comprises: an intake unit through which outside air is introduced; a filter unit including a filter member including a first region which is a part of an outer surface of the filter member and whose vertical height is equal to the vertical height of the outer surface of the filter member, and a second region which is an area other than the first region of the outer surface of the filter member, as a filter member having a columnar hollow extending in the vertical direction therein to filter the external air introduced into the intake unit; a blower unit providing a blowing force so that the outside air is filtered by the filter member through the columnar hollow and becomes filtered air and discharged to the outer surface of the filter member; and a flow guide unit facing the first region and having a flow guide surface formed to be spaced apart from the first region in an outer direction of the filter member in a shape corresponding to the first region. The filtered air discharged from the first region toward the flow guide surface moves along a filtered air flow path formed between the first region and the flow guide surface to become accelerated air, and is discharged to the outside through a discharge port formed to extend in the vertical direction of the filter member along a boundary between the first region and the second region. The discharge speed of the accelerated air is greater than the discharge speed of the filtered air discharged from the first region toward the flow guide surface and the discharge speed of the filtered air discharged through the second region.

Description

Air purifier {AIR PURIFIER}

The present invention relates to an air purifier, and more particularly, to an air purifier capable of improving the supply efficiency of filtered air by filtering outside air and discharging it as filtered air, but accelerating some of the filtered air and discharging it as accelerated air .

An air purifier is a device that forcibly sucks in polluted external air, purifies it, and then discharges the purified filtered air to the outside. The air purifier includes a blower for introducing outside air into the air purifier, and a filter member having a function of filtering foreign substances such as dust or bacteria in the air. Such a known air purifier is configured to forcibly suck in air polluted in an indoor space, such as a home or office, filter the dust, and recirculate the purified air to the room.

US Patent Publication No. 2018-0221805 of COWAY CO., LTD. discloses a conventional air purifier. According to such an air purifier, in the process of filtering the external air forcibly introduced into the blowing unit 120 disposed on the lower side and then discharged as filtered air through the air discharge unit 116 on the upper side, a significant proportion of the filtered air is It is reintroduced into the blowing unit 120 and acts as a major cause of lowering the filtration performance of the air purifier. In addition, the re-introduction of the filtered air lowers the fluidity of the filtered air, causing the filtered air to stay in the vicinity of the air purifier, thereby obstructing the smooth circulation of the air.

Korean Patent Application Laid-Open No. 10-2019-0058434 of LG Electronics Co., Ltd. discloses an air purifier in which external air sucked into the first suction unit 102 disposed below is discharged as filtered air through the first discharge unit 105. is starting The air purifier also has problems such as re-introduction of filtered air and weak fluidity of filtered air, similar to those discussed above.

12 shows an air purifier according to the prior art. The air purifier 1 according to the prior art has a cylindrical shape having a predetermined diameter D, the intake part 11 is disposed at the lower part, and the discharge part 12 is provided at the upper part. The external air A1 introduced through the intake unit 11 is filtered and discharged as the filtered air A2 through the discharge unit 12 . At this time, the external air (A1) is introduced through the entire outer peripheral surface of the intake unit (11), the filtered air (A2) is discharged over the entire outer peripheral surface of the discharge unit (12).

13 shows a flow distribution simulation result around an air purifier according to the prior art. The simulation was performed with the analysis area set to 10D×10D×5D, the number of grids 2 million, and the ke turbulence model. In addition, the blowing speed was set to 7.5 CMM (m ³ /min). Referring to FIG. 13 , it can be seen that the purified and discharged flow does not spread in all directions and enters the intake unit 11 again.

In order to solve this problem of the conventional air purifier, it may be considered to improve the performance of the blower fan provided in the air purifier or to design the air purifier to widen the gap between the lower suction area and the upper exhaust area. have. However, as the blowing amount of the blowing fan increases, the noise generated from the blowing fan increases, and if the gap between the lower intake area and the upper exhaust area is widened, a problem arises that the design of miniaturization of the product is limited.

US 2018-0221805 A1 KR 10-2019-0058434 A

In order to solve the above problem, the air purifier according to the present invention accelerates some of the filtered air sucked from the outside and filtered through the flow guide part and discharges it as accelerated air, thereby reducing the re-suction rate of the filtered air and reducing the amount of filtered air. It aims to improve emission efficiency.

In the air purifier according to an embodiment of the present invention, the filtered air discharged to the outside of the air purifier through a flow direction defined by the accelerated air formed by accelerating some of the filtered air sucked in from the outside is accelerated by the flow guide unit. The purpose is to make it flow intensively with a certain direction.

An air purifier according to an embodiment of the present invention aims to easily implement a structure for generating accelerated air by allowing a flow guide unit for generating accelerated air to be detachably fixed to a frame to which a filter unit is fixed or to be integrally formed. do it with

An air purifier according to an embodiment of the present invention aims to improve the ease of attachment and detachment of the filter part by allowing the filter part to be fitted to the frame of the fixing part.

The air purifier according to an embodiment of the present invention improves the design freedom of the air purifier by varying the shape of the filter member provided in the filter unit or by bending a single filter member or connecting a plurality of filter members to form the filter unit. aim to do

In order to achieve the above object, an air purifier according to the present invention includes: an intake unit through which external air is introduced; A filter member having a pillar-shaped hollow extending in the vertical direction to filter the external air introduced into the intake unit, the filter member is a part of the outer surface of the filter member, and the vertical height is the vertical height of the outer surface of the filter member a filter unit including a filter member having a first area such as <RTI ID=0.0>a</RTI> a blower providing a blowing force so that the outside air is filtered by the filter member through the columnar hollow and becomes filtered air and discharged to an outer surface of the filter member; and a flow guide part facing the first area and having a flow guide surface formed to be spaced apart from the first area in an outer direction of the filter member in a shape corresponding to the first area; The filtered air discharged toward the flow guide surface from the first area moves along the filtered air flow path formed between the first area and the flow guide surface to become accelerated air, thereby forming the boundary between the first area and the second area. Accordingly, the filter member is discharged to the outside through a discharge port formed extending in the vertical direction, and the discharge speed of the accelerated air is the discharge rate of the filtered air discharged from the first area toward the flow guide surface and through the second area. It is characterized in that it is larger than the discharge rate of the discharged filtered air.

In the air purifier according to the embodiment of the present invention, the second region is characterized in that it is exposed to the outside.

In the air purifier according to the embodiment of the present invention, the discharge direction of the accelerated air is perpendicular to the vertical direction, characterized in that the direction in contact with the outer surface of the filter member.

In the air purifier according to an embodiment of the present invention, the first area is larger than or equal to the area of the second area.

The air purifier according to an embodiment of the present invention further comprises a fixing part having a frame to which the filter part is fixed, wherein the flow guide part is detachably fixed to the frame or integrally formed with the frame. do.

In the air purifier according to an embodiment of the present invention, a groove is formed in the frame into which the lower end of the filter unit can be inserted and fixed, and the filter member is formed to be able to be fitted into the groove.

In the air cleaner according to the embodiment of the present invention, the filter member is characterized in that the cylindrical or polygonal cylindrical shape.

In the air purifier according to an embodiment of the present invention, the filter member is formed in a cylindrical shape, and is bent so that the radius of the first region is smaller than the radius of the second region and is fixed to the frame. .

In the air purifier according to an embodiment of the present invention, the filter unit is formed by bending a single filter member or a plurality of filter members are connected to each other.

In the air purifier according to an embodiment of the present invention, the filter member is formed in a cylindrical shape, and at least a portion of the filtered air discharged through the second region meets the accelerated air discharged through the discharge port and flows. do it with

In the air purifier according to an embodiment of the present invention, the flow guide part includes a blocking member formed on an upper surface of the filter member, and the blocking member is formed of a material having less or the same air permeability than the filter member. do it with

According to the above configuration, the air purifier according to the present invention accelerates some of the filtered air sucked in from the outside and discharges it as the accelerated air through the flow guide part, thereby reducing the re-suction rate of the filtered air, thereby reducing the efficiency of discharging the filtered air. provides the effect of enhancing

In the air purifier according to an embodiment of the present invention, the filtered air discharged to the outside of the air purifier through a flow direction defined by the accelerated air formed by accelerating some of the filtered air sucked in from the outside is accelerated by the flow guide unit. It provides the effect of intensively flowing with a certain direction.

The air purifier according to an embodiment of the present invention has the effect of easily implementing a structure for generating accelerated air by allowing the flow guide part for generating the accelerated air to be detachably fixed to a frame to which the filter unit is fixed or to be integrally formed. to provide.

The air purifier according to the embodiment of the present invention provides an effect of improving the ease of attachment and detachment of the filter unit by allowing the filter unit to be fitted to the frame of the fixing unit.

The air purifier according to an embodiment of the present invention improves the design freedom of the air purifier by varying the shape of the filter member provided in the filter unit or by bending a single filter member or connecting a plurality of filter members to form the filter unit. provides the effect of

1 is a perspective view of an air purifier according to an embodiment of the present invention;
2 is an exploded perspective view of an air purifier according to an embodiment of the present invention;
Figure 3 is an AA' cross-sectional perspective view of the air cleaner according to an embodiment of the present invention.
4 is an AA' cross-sectional view of an air cleaner according to an embodiment of the present invention.
5 is a cross-sectional view of a filter member of an air purifier according to an embodiment of the present invention;
6 is a perspective view of a flow guide part and a fixing part of the air purifier according to an embodiment of the present invention;
7 is a cross-sectional view showing an exhaust state of the air purifier according to an embodiment of the present invention.
8 is a perspective view illustrating a modified example of a flow guide part and a fixing part of the air purifier according to an embodiment of the present invention.
Fig. 9 is a cross-sectional view showing an exhaust state in Fig. 8;
10 is a cross-sectional view of a modified example of a filter unit and a flow guide unit of the air purifier according to an embodiment of the present invention.
11 is a view showing a flow distribution simulation result around an air purifier according to an embodiment of the present invention.
12 is a view showing an air purifier according to the prior art.
13 is a view showing a flow distribution simulation result around an air purifier according to the prior art.

The words and terms used in the present specification and claims are not to be construed as limited in their ordinary or dictionary meanings, but in accordance with the principle that the inventor can define terms and concepts in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea.

Therefore, the embodiments described in this specification and the configurations shown in the drawings correspond to a preferred embodiment of the present invention, and do not represent all of the technical spirit of the present invention, so that the configuration may be replaced by various alternatives at the time of filing of the present invention. There may be equivalents and variations.

In the present specification, terms such as "comprise" or "have" are intended to describe the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but one or more other features It should be understood that this does not preclude the possibility of addition or existence of numbers, steps, operations, components, parts, or combinations thereof.

The presence of a component "in front", "behind", "above" or "below" of another component means that, unless otherwise specified, it is directly in contact with another component, such as "front", "rear", "above" or "below". It includes not only being disposed at the “lower side” but also cases in which another component is disposed in the middle. In addition, when a component is "connected" with another component, it includes not only direct connection to each other but also indirect connection to each other unless otherwise specified.

1 is a perspective view of an air purifier according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the air purifier according to an embodiment of the present invention, and FIG. 3 is an AA of the air purifier according to an embodiment of the present invention. ' It is a cross-sectional perspective view, and FIG. 4 is a cross-sectional view AA' of the air cleaner according to an embodiment of the present invention.

The air purifier 100 according to an embodiment of the present invention filters the outside air A1 and discharges it as the filtered air A2, but accelerates some of the filtered air A2 and discharges it as the accelerated air A3. Specifically, the external air (A1) sucked through the intake unit 110 is filtered by the filter unit 120 and discharged as the filtered air (A2). At this time, some of the filtered air (A2) becomes the accelerated air (A3) accelerated by the flow guide unit 140 is discharged to the outside. The accelerated air value (A3) accelerates the filtered air (A2) discharged to the outside of the air purifier (100) to reduce the re-introduction rate of the filtered air (A2) into the intake part (110), thereby increasing the exhaust efficiency of the filtered air (A2) enhance In addition, the acceleration air (A3) by defining the flow direction of the filtered air (A2) discharged to the outside allows the filtered air (A2) to flow intensively with a certain directionality.

1 to 4 , the air purifier 100 according to an embodiment of the present invention includes an intake unit 110 , a filter unit 120 , a blower unit 130 , a flow guide unit 140 , and a fixing unit. (150) is included.

Hereinafter, each configuration of the air purifier 100 according to an embodiment of the present invention will be described in detail.

The intake unit 110 is configured to suck in the outside air (A1). As shown in FIG. 2 , in one embodiment of the present invention, the intake unit 110 is positioned below the blower 130 and may be formed to be placed on the bottom surface.

In more detail, the intake unit 110 includes at least one intake port 111 that is opened to form an intake area through which air is sucked inside. The suction port 111 may be covered by the suction filter unit 113 . The suction filter unit 113 includes a plurality of external inlet holes 114a through which air passes, an external grill 114 exposed to the outside, a plurality of internal inflow holes 116a through which air passes, and an intake port 111 ) may include an internal grill 116 assembled to cover it. In addition, the intake filter unit 113 is disposed between the external grill 114 and the internal grill 116 and includes an intake filter member 115 for filtering foreign substances such as fine dust or bacteria contained in the internally sucked air. can do.

Here, the intake filter member 115 is a ULPA (Ultra-Low Penetration Air) filter, HEPA (High Efficiency Particulate Air) filter that collects and filters ultra-fine dust of 0.1 to 0.3 μm or fine dust of 0.3 μm or more contained in the air. , a medium filter, a dust collection filter such as a pre-filter, or an antibacterial filter that filters out bacteria or microorganisms contained in the inhaled air.

Meanwhile, in one embodiment of the present invention, the external inlet hole 114a of the external grill 114 is formed in a substantially circular shape, and the internal inflow hole 116a of the internal grill 116 is formed in a grid shape. However, this is exemplary and the shapes of the external grill 114 and the internal grill 116 are not limited thereto, and may be formed in various shapes according to dust collection efficiency.

The filter unit 120 is disposed above the intake unit 110 . As shown in FIG. 2, in one embodiment of the present invention, the filter unit 120 includes a filter member 121 including a columnar hollow extending in the vertical direction to filter air, and is formed in a hollow columnar shape. can be formed. The filter unit 120 may be formed in a column shape having a cross section in the form of a closed curved surface by bending a single filter member 121 . In this case, the filter member 121 may be formed in a hollow cylindrical shape.

In the present embodiment, the hollow part of the filter member 121 is formed to communicate with the intake part 110 and the blower part 130 disposed below. Accordingly, the filter unit 120 may filter the outside air A1 through the filter member 121 and discharge the filtered air A2 to the outer surface of the filter member 121 .

Referring to FIG. 5 , the filter member 121 includes a first region 121a that is a part of the outer surface of the filter member 121 and has the same vertical height as that of the outer surface of the filter member 121, 1 The second area 121b may be included instead of the area 121a. According to an embodiment of the present invention, the first area 121a is defined as a surface disposed to face the flow guide surface 141 of the flow guide part 140 to be described later, and the second area 121b is an air purifier. (100) may be defined as a surface that is exposed to the outside.

6 and 7 , a filtering air flow path P is formed in the space between the first region 121a of the filter member 121 and the flow guide surface 141 . Filtered air (A2) discharged from the first area (121a) of the filter member (121) toward the flow guide surface (141) flows along the filtered air flow path (P) and is accelerated to become accelerated air (A3) to the outside can be ejected.

According to an embodiment of the present invention, the second region 121b is exposed to the outside. Accordingly, the filtered air (A2) discharged through the second region (121b) is discharged to the outside through the filter member (121) by the blowing force of the blower (130), so the speed is relatively slow compared to the accelerated air (A3). is discharged to the outside.

When the second region 121b is located above the intake unit, if the filtered air A2 discharged to the outside of the air purifier 100 is discharged at a slow speed, it cannot flow away from the air purifier and descends to return to the intake unit 110. There is a risk of inflow. However, the air purifier 100 according to an embodiment of the present invention increases the flow rate of the filtered air A2 while the accelerated air A3 guides the traveling direction of the filtered air A2. Therefore, it is possible to significantly reduce the re-introduction of the filtered air A2 discharged to the outside of the air purifier 100 through the accelerated air A3 into the intake unit 110 .

According to an embodiment of the present invention, the first area 121a of the filter member 121 may be formed to be larger than or equal to the area of the second area 121b. In this way, when the area of the first region 121a is equal to or larger than that of the second region 121b, it is possible to obtain sufficient accelerated air A3 compared to the filtered air A2.

The flow rate of the filtered air A2 discharged to the outer surface of the filter member 121 through the second region 121b of the filter member 121 is increased by the accelerating air A3. Accordingly, it is advantageous in terms of increasing the flow rate of the filtered air A2 that at least a portion of the filtered air A2 discharged through the second region 121b is discharged in the direction of the acceleration air A3.

To this end, as shown in FIG. 7 , the second region 121b includes at least a portion of the filtered air A2 discharged through the second region 121b through the discharge port 142. Accelerated air A3 discharged through the discharge port 142. It can be formed in a form that can meet and flow. Referring to FIG. 7 , in the filter member 121 formed in a cylindrical shape, a portion of the second region 121b is formed in a shape in which the normal line N intersects the extension line D in the discharge direction of the accelerated air A3. has been Here, the normal line N means a line perpendicular to the tangent line T in contact with a certain point of the second area 121b, and the direction in which the corresponding point of the second area 121b faces or the second area 121b ) can be interpreted as the direction in which the filtered air (A2) is discharged at the corresponding point. According to the present embodiment, most of the filtered air (A2) discharged through the second region (121b) through this configuration meets the accelerated air (A3) discharged through the discharge port (142) can flow. .

Based on this point of view, as in the present embodiment, when the second region 121b of the filter member 121 has a semi-cylindrical outer surface, the outer surface of the filter member 121 through the second region 121b Since most of the discharged filtered air (A2) comes into contact with the accelerated air (A3) in the flow process, an increase in flow rate and improvement of circulation efficiency can be made more smoothly.

On the other hand, the filter member 121 is a dust collecting filter such as a ULPA filter, a HEPA filter, a midium filter, a pre-filter that collects and filters 0.1 ~ 0.3㎛ ultra-fine dust or 0.3㎛ or more fine dust contained in air, or a suction It may consist of an antibacterial filter that filters out bacteria or microorganisms contained in the air.

On the other hand, in another embodiment of the present invention, the filter member may have a shape other than the cylindrical shape. For example, in another embodiment of the present invention, the filter member may be formed in a polygonal tubular shape of various shapes such as a triangle, a square, and the like. In addition, it may be considered in another embodiment of the present invention that the filter member forms a columnar shape by connecting a plurality of plate-shaped filter members to each other.

The blower 130 provides a blowing force so that the external air A1 introduced into the intake part 110 is filtered by the filter member 121 through the columnar hollow and then discharged to the outer surface of the filter member 121 . According to an embodiment of the present invention, the blower 130 is disposed between the intake portion 110 and the filter portion 120 to filter the external air A1 introduced through the intake portion 110 to the filter member 121 . flow to the inner side of

3 and 4, in one embodiment of the present invention, the blower 130 includes an outer bulkhead 131, a motor 132, an impeller 133, a lower grill 134a and an upper grill 134b. ) is included.

In more detail, the outer partition wall 131 is disposed between the intake unit 110 and the filter unit 120 , and the motor 132 and the impeller 133 are disposed to provide a blowing space in which blowing force is generated. The motor 132 is disposed in the outer bulkhead 131 such that the drive shaft 132a is vertically disposed, and the impeller 133 is coupled to the drive shaft 132a of the motor and rotates according to the rotation of the motor 132 and the blowing force causes The motor 132 has a drive shaft 132a disposed downward. Accordingly, the impeller 133 may be adjacent to the intake unit 110 to provide blowing force. The air introduced into the intake unit 110 according to the rotation of the impeller 133 is first filtered by the intake filter member 115, and the first filtered air passes through the ventilation space in the outer partition wall 131 to the filter unit ( 120).

According to an embodiment of the present invention, the blowing force is formed from the bottom to the top in the blowing space. Accordingly, the air introduced into the intake unit 110 flows to the filter unit 120 through the ventilation space. At this time, the lower grill 134a is disposed at the boundary between the intake unit 110 and the blower 130 , and the upper grill 134b is disposed at the boundary between the blower and the blower 130 and the filter unit 120 . can be

According to an embodiment of the present invention, the flow guide unit 140 accelerates some of the filtered air A2 discharged from the filter unit 120 to form the accelerated air A3. The accelerated air A3 formed by the flow guide unit 140 increases the flow rate of the filtered air A2 that is directly discharged to the outside through the filter unit 120, so that the filtered air A2 moves to the intake unit 110. Reduce the re-entry rate. In addition, the accelerating air (A3) allows the filtered air (A2) discharged to the outside to flow intensively with a certain direction by defining the flow direction of the filtered air (A2). Through this, the flow rate and circulation efficiency of the filtered air (A2) is improved.

The flow guide part 140 has a flow guide surface 141 . The flow guide surface 141 is a part of the outer surface of the filter member 121 and faces the first area 121a whose vertical height is the same as the vertical height of the outer surface of the filter member 121, and the first area 121a ) has a shape corresponding to In addition, the flow guide surface 141 is formed to be spaced apart from the first region 121a in an outer direction of the filter member 121 .

The filtered air A2 discharged from the first area 121a of the filter member 121 toward the flow guide surface 141 is a filtered air flow path P formed between the first area 121a and the flow guide surface 141 . ) to follow. The accelerated filtered air (A2) is discharged to the outside as accelerated air (A3) through the discharge port 142 formed extending in the vertical direction of the filter member 121 along the boundary between the second area 121b and the first area 121a. do.

The discharge speed of the accelerated air A3 discharged from the discharge port 142 to the outside is the discharge speed of the filtered air A2 discharged from the first area 121a toward the flow guide surface 141 and the second area 121b. It is greater than the discharge speed of the filtered air (A2) discharged to the outer surface of the filter member 121 through the. In one embodiment of the present invention, the accelerated air (A3) is discharged from both sides of the filtered air (A2). Therefore, the accelerating air A3 accelerates the filtered air A2 discharged to the outside through the second region 121b of the filter member 121 from both sides. Through this action, the re-inflow rate of the filtered air A2 into the intake unit 110 is reduced.

6 and 7 , the flow guide surface 141 is formed as an inner surface of the guide wall 141a that surrounds the first area 121a of the filter member 121 of the filter unit 120 . The guide wall 141a is formed in a semi-cylindrical shape to form a filtering air passage P between the first region 121a of the filter member 121 and the flow guide surface 141 . In addition, the second region 121b of the filter member 121 not covered by the guide wall 141a is exposed to the outside of the air cleaner 100 .

In more detail, the filtering air flow path P is formed as a gap between the first region 121a and the flow guide surface 141 when the filter member 121 is fixed. 7 , when the filter member 121 has a cylindrical shape, the filter member 121 is formed so that the radius R2 of the first region 121a is smaller than the radius R1 of the second region 121b. ) can be bent and fixed to form a filtered air flow path (P).

At this time, the height of the filtering air flow path (P) may be formed to correspond to the height of the filter member (121). In addition, the width of the filtered air flow path (P) may be determined in consideration of the required blowing capacity, the discharge speed of the accelerated air (A3) at the discharge port (142), and the like.

As the width of the filtered air flow path P is narrower, the discharge speed of the accelerated air A3 from the discharge port 142 may be increased. However, when considering that the filter member 121 can be expanded in a certain range radially outward by the blowing force during the operation of the air purifier 100 , when the filter member 121 is expanded, the It is necessary to secure a width sufficient to prevent blockage.

In addition, as shown in FIG. 7 , according to an embodiment of the present invention, the discharge direction of the accelerated air A3 is perpendicular to the vertical direction, and may be formed in a direction in contact with the outer surface of the filter member 121 . The accelerated air A3 discharged in a direction in contact with the outer surface of the filter member 121 functions as a boundary on both sides defining the flow path of the filtered air A2, and defines the flow direction of the filtered air A2 within a certain range. do it Accordingly, the discharge range of the filtered air (A2) can be defined by the discharge direction of the acceleration air (A3).

As described above, the filtered air A2 discharged through the first area 121a of the outer surface of the filter member 121 is accelerated to become the accelerated air A3 between the first area 121a and the second area 121b. It is discharged in a direction in contact with the outer surface of the filter member 121 along the boundary. Meanwhile, the filtered air A2 discharged through the second region 121b of the outer surface of the filter member 121 is directly discharged to the outside of the air purifier 100 .

Accordingly, according to the present embodiment, the flow path between the accelerated air A3 discharged along the discharge direction formed in contact with the filter member 121 at both boundaries of the first area 121a and the second area 121b. is stipulated In addition, the flow of the filtered air (A2) discharged to the outside of the air cleaner 100 along the prescribed flow path is made intensively. As such, the flow direction of the filtered air A2 discharged to the outside of the air purifier 100 by the accelerated air A3 may be limited to one direction of the side of the filter unit 120 . Through this, the flow rate of the filtered air A2 and the circulation range of the air circulating inside the space in which the air purifier 100 is located can be expanded, and circulation efficiency can be improved without an increase in the blowing capacity.

Meanwhile, in one embodiment of the present invention, the flow guide unit 140 includes a blocking member 143 formed on the upper portion of the filter member (121). In this case, the blocking member 143 may be formed of a material having less or the same air permeability than the filter member 121 .

According to an embodiment of the present invention, the blocking member 143 does not have air permeability. When the blocking member 143 is made not to have air permeability, the area of the filtered air A2 discharged to the outside is limited between the accelerated air A3, and the formation of the accelerated air A3 can be made efficiently.

If the air permeability of the blocking member 143 is high, the outside air A2 may be discharged to the outside through the blocking member 143 without passing through the filter member 121 after passing only the intake filter member 115 . Therefore, when the blocking member 143 has air permeability, the arrangement of the filter member for filtration of air also under the blocking member 143 should be considered.

The shape of the blocking member 143 may be formed to correspond to the shape of the upper surface of the filter member 121 . 1, 2, and 6, since the filter member 121 according to an embodiment of the present invention is formed in a hollow cylindrical shape, the blocking member 143 may also be formed in a disk shape corresponding thereto.

The blocking member 143 may cover the upper end of the filter member 121 as well as the upper end of the filtering air passage P. At this time, it may be considered that the portion covering the upper end of the filtering air passage P of the blocking member 143 also has air permeability. Since the filtered air A2 existing on the filtered air flow path P is the air that has been filtered by the filter member 121, it may be partially discharged through the upper end of the filtered air flow path P. However, the blocking member 143 may completely block the ventilation of the upper end of the filtered air flow path P in consideration of the required discharge speed and flow rate of the accelerated air A3.

Meanwhile, an inner rib 143a and an outer rib 143b may protrude downward so that the upper end of the filter member 121 can be inserted and fixed on the lower surface of the blocking member 143 . According to an embodiment of the present invention, the inner rib (143a) and the outer rib (143b) are each formed in a circular shape, the width between the inner rib (143a) and the outer rib (143b) is the thickness of the filter member (121) It may be formed to correspond.

The fixing unit 150 includes a frame 151 to which the filter unit 120 is fixed. The flow guide unit 140 may be detachably fixed to the frame 151 of the fixing unit 150 or may be integrally formed with the frame 151 . In one embodiment of the present invention, the frame 151 is disposed on the upper portion of the blower 130 , the filter portion 120 and the lower portion of the flow guide portion 140 . In more detail, the frame 151 may be formed of a substantially ring-shaped member through which a circular hole 151b coupled to communicate with the ventilation space is formed.

In addition, the frame 151 may be formed with a groove 151a into which the lower end of the filter member 121 can be inserted and fixed, and the lower end of the filter member 121 may be formed to be able to be fitted into the groove 151a.

8 is a perspective view showing a modified example of the flow guide part and the fixing part of the air purifier according to an embodiment of the present invention, and FIG. 9 is a cross-sectional view showing the exhaust state in FIG. 8 .

8 and 9, when the filter member 121 of the air cleaner 100 is formed in a cylindrical shape, the first region 121a and the second region 121b have the same radius R1, that is, the filter member ( 121), but arranged to maintain the original radius (R1), the distance from the hollow of the filter member 121 to the flow guide surface 141 is formed as a radius (R3) larger than the radius (R1) of the filter member (121) By arranging the guide wall 141a of the flow guide part 140 as possible, the filtered air flow path P can be formed.

At this time, the flow guide surface 141 may be additionally provided with at least one protrusion 144 for maintaining a gap in contact with or spaced apart from the outer surface of the filter member 121 . For example, the protrusion 144 for maintaining the gap may be provided in a columnar shape or a plate shape extending from the flow guide surface 141 toward the first region 121a of the filter member 121 at a predetermined height.

As such, when the flow guide surface 141 is provided with at least one protrusion 144 for maintaining a gap between the filter member 121 and the filter member 121, it is expanded in the radial direction by the external force of the filtered air A2 that is filtered and discharged. Since the outer surface of the filter member 121 comes into contact with the end of the protrusion 144 for maintaining the gap, the first region 121a of the filter member 121 is in contact with the flow guide surface 141 to allow the filtering air flow path (P). It is possible to prevent deterioration of exhaust performance by partially blocking the

10 is a cross-sectional view of a modified example of the filter unit and the flow guide unit of the air purifier according to an embodiment of the present invention.

Referring to FIG. 10 , the filter member 121 ′ of the filter unit 120 may have a polygonal tubular (eg, rectangular tubular) shape. In the modified example of FIG. 10 , the filter member 121' is formed of a rectangular cylinder, among which three surfaces are formed as the first area 121a', and the other surface is the second area 121b'. is formed with

Accordingly, the flow guide part 140' provides a flow guide surface 141' surrounding the first region 121a' of the filter member 121a'. As in the above-described embodiment, in the modified example, the filtering air passage P1 is formed between the first region 121a' of the filter member 121a' and the flow guide surface 141', and the filter member 121a' Filtered air (A2) discharged to the outer surface of the first area (121a') of the flow along the filtered air flow path (P1) is accelerated to become accelerated air (A3) is discharged through the discharge port (142').

In the modified example of FIG. 10 , the accelerated air A3 defines the flow path of the filtered air A2 to the front of one side of the filter member 121 ′, and the filtered air A2 discharged through the one side accelerate Accordingly, the flow rate and circulation efficiency of the filtered air A2 can be improved, and the re-inflow of the filtered air A2 can be reduced.

As in the modified example, when the filter member 121 ′ has a polygonal cylindrical shape, the shape of the air purifier can be formed in a polygonal cylindrical shape, and the shape of the air purifier can be diversified according to consumer preferences.

Hereinafter, a simulation result of a peripheral flow distribution of the air purifier 100 according to an embodiment of the present invention will be described.

11 shows a flow distribution simulation result around an air purifier according to an embodiment of the present invention. This simulation was performed with the analysis area set to 3650mm×3200mm×2400mm, the number of grids 1.51 million, and the ke turbulence model. In addition, the blowing speed was set to 9.5CMM (m ³ /min). Referring to FIG. 11 , it can be seen that the filtered air A2 flows intensively in one direction with directionality, and the re-inflow of the filtered air A2 into the suction unit 110 hardly occurs.

Although one embodiment of the present invention has been described, the spirit of the present invention is not limited by the embodiments presented herein, and those skilled in the art who understand the spirit of the present invention can add components, within the scope of the same spirit, Other embodiments may be easily proposed by changes, deletions, additions, etc., but these will also fall within the scope of the present invention.

110: intake
120: filter unit
130: blower
140: flow guide part
150: fixed part

Claims (11)

an intake unit through which outside air is introduced;
A filter member having a columnar hollow extending in the vertical direction therein to filter the external air introduced into the intake part, which is a part of the outer surface of the filter member and has a vertical height of the outer surface of the filter member. a filter unit including a filter member having a first area such as <RTI ID=0.0>a</RTI>
a blower providing a blowing force so that the outside air is filtered by the filter member through the columnar hollow and becomes filtered air and discharged to an outer surface of the filter member; and
and a flow guide part facing the first area and having a flow guide surface formed to be spaced apart from the first area in an outer direction of the filter member in a shape corresponding to the first area;
Filtered air discharged from the first region toward the flow guide surface moves along a filtered air flow path formed between the first region and the flow guide surface to become accelerated air, It is discharged to the outside through the outlet formed extending in the vertical direction of the filter member along the boundary,
The discharge speed of the accelerated air is greater than the discharge speed of the filtered air discharged from the first area toward the flow guide surface and the filtered air discharged through the second area. The method of claim 1,
The second area is an air purifier, characterized in that exposed to the outside. The method of claim 1,
The discharge direction of the accelerated air is perpendicular to the vertical direction and is in contact with the outer surface of the filter member. The method of claim 1,
The first area is larger than or equal to the area of the second area. The method of claim 1,
Further comprising a fixing part having a frame to which the filter part is fixed,
The flow guide portion is detachably fixed to the frame or air purifier, characterized in that formed integrally with the frame. 6. The method of claim 5,
The frame is formed with a groove into which the lower end of the filter unit can be inserted and fixed, and the filter member is formed to be able to be fitted into the groove. The method of claim 1,
The filter member is an air purifier, characterized in that the cylindrical or polygonal cylindrical shape. 8. The method of claim 7,
The filter member is formed in a cylindrical shape, is bent so that the radius of the first region is smaller than the radius of the second region, and is fixed to the frame. The method of claim 1,
The filter unit is an air purifier, characterized in that formed by bending a single filter member or a plurality of filter members connected to each other. The method of claim 1,
The filter member is formed in a cylindrical shape,
At least a portion of the filtered air discharged through the second area meets the accelerated air discharged through the discharge port and flows. The method of claim 1,
The flow guide part includes a blocking member formed on an upper surface of the filter member, and the blocking member is formed of a material having less or the same air permeability than the filter member.

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