KR20220000301A - Apparatus for filtering air - Google Patents

Abstract

Disclosed is an air filtering apparatus capable of supplying sufficient air to the inside of a mask. According to one aspect of the present invention, the air filtering apparatus is mounted on a mask which covers at least one of a user's nose and mouth to partition a breathing space from the external space. According to one aspect of the present invention, the air filtering apparatus comprises: a housing coupled to a mask; an intake hole formed through the housing to move air from the external space to a breathing space; an intake fan placed in the intake hole and introducing the air from the external space into the breathing space; a filter disposed in the intake hole to filter the air introduced by rotation of the intake fan; an outer cover coupled to the intake hole, covering an inlet of the intake hole, and including an intake surface having an inlet hole formed therein to introduce the air into the intake hole, wherein the intake surface is formed to protrude toward at least one of the exterior and interior of the intake hole so that the surface area of the intake surface is increased; a discharge unit coupled to the mask and capable of discharging the air of the breathing space in a direction different from that in which the air is introduced from the external space; and a battery disposed in the housing to supply electrical energy to the intake fan.

Description

Air filtration device {APPARATUS FOR FILTERING AIR}

The present invention relates to an air filtration device.

Recently, due to yellow dust or airborne infectious diseases, the demand for masks that can block fine dust or infectious agents is rapidly increasing.

However, in general, these masks are manufactured to satisfy the required particle blocking performance such as KF (Korea Filter) index such as KF94 and KF80, so there is no limit to the amount of air delivered to the respirator in the mask through the filter of the mask when inhaling. There is a problem that it is difficult to breathe.

Accordingly, the need for a mask that satisfies the required particle blocking performance but can deliver a sufficient amount of air for breathing to the respiratory system is increasing.

Republic of Korea Patent Publication No. 10-1530912 (2015.06.23. Announcement)

An object of the present invention is to provide an air filtering device capable of providing a sufficient amount of filtered air to a respirator in a mask.

According to an aspect of the present invention, as an air filtering device mounted on a mask for partitioning a breathing space from an external space by covering at least one of a user's nose and mouth, a housing coupled to the mask and air from the external space are removed from the breathing space an intake hole formed through the housing so as to be movable into an outer cover having an intake surface formed therein, the intake surface protruding toward at least one of the exterior and interior of the intake hole so that the surface area of the intake surface is increased; An air filtering device is provided, comprising an exhaust unit capable of discharging air in a breathing space in different directions, and a battery disposed in a housing to supply electrical energy to an intake fan.

The intake hole may be partitioned to include a first area to which the outer cover is coupled and a filter is disposed, and a second area where the intake fan is disposed.

The outer cover is detachably coupled to the first area so that the filter can be replaced, a fitting groove is formed on the inner circumferential surface of the first area, and the outer cover is engaged with the fitting groove according to the rotation of the outer cover on the outer circumferential surface of the outer cover to attach the outer cover to the first area. A fitting protrusion for coupling to the region may be formed.

A separation guide having a spiral structure may be formed on the inner circumferential surface of the first region so that the outer cover is pulled out and separated when the outer cover coupled to the first region is reversely rotated.

A filter support portion is disposed at an end of the first area on the side of the second area to support the filter and move air, and the filter support portion includes a plurality of radiating portions protruding from the inner circumferential surface of the first area and extending in the central direction, The radiating part may be bent in a rotational direction of the intake fan.

It further includes a mask and a mounting unit coupled to the mask to couple the housing and the exhaust unit to the mask, wherein the mounting unit is disposed on the outer surface of the mask to correspond to the position of the first mounting piece and the first mounting piece disposed on the inner surface of the mask. It may include a second mounting piece coupled to the first mounting piece.

The housing may be disposed on the exhaust unit to prevent the air discharged through the exhaust unit from being mixed with air introduced through the inlet hole to form a flow guide surface for guiding the flow of the discharged air laterally.

The flow guide surface may be curved so that air discharged through the exhaust unit can be discharged laterally and laterally along the user's face.

The flow guide surface side end of the exhaust unit may be inclined to correspond to the flow guide surface.

The flow guide surface may have a deflection protrusion protruding from the end-side surface to refract the air discharged from the exhaust unit toward the user's face.

According to the present invention, it is possible to provide a sufficient amount of filtered air to the respirator in the mask.

1 is a view showing an air filtering device according to an embodiment of the present invention.
Figure 2 is a first perspective view showing an air filtering device according to an embodiment of the present invention.
Figure 3 is a second perspective view showing an air filtering device according to an embodiment of the present invention.
4 is a cross-sectional view taken along line AA of FIG. 1 .
5 is a view showing another example of the outer cover according to an embodiment of the present invention.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, an embodiment of the air filtering device 100 according to the present invention will be described in detail with reference to the accompanying drawings, and in the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numerals and thus A duplicate description will be omitted.

According to the present embodiment, as shown in FIGS. 1 to 5 , an air filtering device mounted on a mask 200 that covers at least one of the nose and mouth of the user 10 to partition the breathing space from the external space. As (100), the housing 110 coupled to the mask 200, the intake hole 120 formed through the housing 110 to move air from the external space to the breathing space, and the intake hole 120 are disposed The intake fan 130 for introducing air from the external space into the breathing space, and the filter 140 disposed in the intake hole 120 to filter the air introduced by the rotation of the intake fan 130, the intake hole 120 It is coupled, and covers the inlet of the intake hole 120 and has an intake surface 156 (a) on which an inlet hole 152 capable of introducing air into the intake hole 120 is formed, and the intake surface 156 (a) ) to increase the surface area of the intake surface 156 (a) is coupled to the outer cover 150, the mask 200 formed to protrude toward at least one of the outside and the inside of the intake hole 120 in the external space An air filtering device comprising an exhaust unit 160 capable of discharging air in the breathing space in a direction different from that in which air is introduced, and a battery 170 disposed in the housing 110 to supply electrical energy to the intake fan 130 . (100) is provided.

According to this embodiment, the air in the external space is fed into the intake hole 120 through the inlet hole 152 of the outer cover 150 by the intake fan 130 that receives electric energy from the battery 170 and rotates. Since the incoming air is filtered by the filter 140 and provided to the breathing space, it is possible to provide a sufficient amount of filtered air to the respirator of the user 10 in the mask 200, and through the exhaust unit 160 It is also possible to exhaust the air of the breathing space in a direction different from the direction in which the air is introduced from the external space.

Hereinafter, each configuration of the air filtering device 100 according to the present embodiment will be described with reference to FIGS. 1 to 5 .

The housing 110 may be coupled to the mask 200 as shown in FIGS. 1 and 4 . In this case, since the housing 110 includes an intake hole 120 and an intake fan 130 and a filter 140 disposed therein, as will be described later, as the housing 110 is coupled to the mask 200 , the above components The air in the external space filtered by the can be introduced into the breathing space in the mask 200 .

As shown in FIGS. 3 and 4 , the housing 110 is disposed on the exhaust unit 160 to prevent the air discharged through the exhaust unit 160 from being mixed with the air introduced through the inlet hole 152 . It is possible to form a flow guide surface 112 that is disposed to guide the flow of the discharged air laterally. (See arrow 2 in FIGS. 1 and 4)

That is, the flow guide surface 112 formed on the housing 110 is disposed in a direction in which air is discharged through an exhaust unit 160 to be described later, so that the air moves toward the air introduced through the inlet hole 152 and is mixed. Therefore, the air filtration efficiency can be further improved.

As shown in FIGS. 3 and 4 , the flow guide surface 112 may be curved so that the air discharged through the exhaust unit 160 can be discharged laterally along the face of the user 10 . (See arrow 2 in FIG. 1)

In other words, the flow guide surface 112 has a concave curved surface shape, which is a shape corresponding to the face of the user 10 . When the air discharged through the exhaust unit 160 reaches the flow guide surface 112 , the curved surface It can be discharged to the side and rear along the face of the user 10 on the ride.

The end of the exhaust unit 160 on the flow guide surface 112 side may be inclined to correspond to the flow guide surface 112 as shown in FIG. 2 (enlarged cross-sectional view).

Accordingly, so that the air discharged through the exhaust unit 160 can be effectively discharged along the flow guide surface 112 , the end of the flow guide surface 112 side of the exhaust unit 160 , that is, the air discharged according to the discharge position may vary the amount of

As shown in FIGS. 3 and 4, the flow guide surface 112 has a deflection protrusion 114 that protrudes from the end-side surface to refract the air discharged from the exhaust unit 160 toward the face of the user 10. can be provided (See arrow 2 in FIG. 4)

That is, the refraction protrusion 114 is disposed on the end side surface of the flow guide surface 112 , that is, on a path through which the air discharged from the exhaust unit 160 moves in the lateral direction along the flow guide surface 112 , By refracting the direction toward the face of the user 10, it is possible to more effectively prevent the exhausted air from being mixed with the incoming air.

As shown in FIGS. 2 to 4 , the intake hole 120 may be formed through the housing 110 to move air from the external space to the breathing space. (See arrow 1 in FIG. 4)

That is, the intake hole 120 is provided in the housing 110 and serves as a passage for the incoming air, and as will be described later, a filter 140 is disposed therein to filter the incoming air and provide it to the breathing space. .

As shown in FIGS. 2 to 4 , the intake hole 120 has a first area 121 to which the outer cover 150 is coupled and a filter 140 is disposed, and a second area in which the intake fan 130 is disposed. It may be partitioned including a region 126 .

More specifically, the space on the inlet side of the intake hole 120 becomes the first area 121 , the filter 140 is disposed in the first area 121 , and the intake fan 130 is disposed in the second area 126 . As the filter 140 is disposed forward toward the external space, it is prevented that the intake fan 130 directly applies wind pressure to the filter 140 , so that filtration by the filter 140 can be performed more effectively.

As shown in FIGS. 2 to 4 , the outer cover 150 may be detachably coupled to the first region 121 to replace the filter 140 .

That is, since the filter 140 is a consumable item, the outer cover 150 is detachably defective in the first region 121, so that the filter 140 can be replaced according to the use time, so that the device can be used semi-permanently, Accordingly, economic efficiency may be improved.

More specifically, as shown in FIGS. 2 and 3 , a fitting groove 122 is formed on the inner circumferential surface of the first region 121 , and the outer circumferential surface of the outer cover 150 is fitted according to the rotation of the outer cover 150 . A fitting protrusion 154 that engages the groove 122 to couple the outer cover 150 to the first region 121 may be formed.

Accordingly, the outer cover 150 is prevented from being arbitrarily removed, and the filter 140 can be effectively supported.

Also, as shown in FIG. 5 , the fitting protrusion 154 is disposed on the downwardly open inlet hole 152 side of the outer cover 150 to be described later, and the fitting groove 122 is the location of the fitting protrusion 154 . may be arranged to correspond to Accordingly, even when the outer cover 150 is detached, the inlet hole 152 may be directed downward during coupling.

As shown in FIGS. 2 and 3 , on the inner peripheral surface of the first region 121 , when the outer cover 150 coupled to the first region 121 rotates in reverse, the outer cover 150 is drawn out and separated. A separation guide 123 having a spiral structure may be formed.

That is, the outer cover 150 can be more easily removed from the first region 121 through the separation guide 123 , and the separation guide 123 couples the outer cover 150 to the first region 121 . It can also be used when

As shown in FIGS. 2 to 4 , a filter support 124 may be disposed at an end of the first region 121 on the side of the second region 121 to support the filter 140 and move air.

That is, the filter support 124 may not only support the filter 140 toward the inlet side of the intake hole 120 , but also allow the air filtered by the filter 140 to pass therethrough.

As shown in FIGS. 2 to 4 , the filter support 124 may include a plurality of radiating parts 125(b) protruding from the inner circumferential surface of the first region 121 and extending in the central direction.

More specifically, it includes a central portion 125(a), and a plurality of radiating portions 125(b) that protrude from the inner circumferential surface of the first region 121 to extend to the central portion 125(a) and are spaced apart from each other. can do.

Accordingly, the air filtered by the filter 140 can move through the space between the plurality of radiating parts 125 (b) as described above.

In addition, as shown in FIGS. 2 and 3 , the plurality of radiating parts 125(b) may be bent in the rotational direction of the intake fan 130 .

That is, since the introduced air moves while rotating in the rotational direction of the intake fan 130 , the radiating portion 125(b) is bent in the rotational direction of the intake fan 130 so that the air more easily passes through the filter support 124 and moves. be able to

Also, as shown in FIGS. 2 and 3 , the radiating portion 125(b) may be formed to decrease in width toward the central portion 125(a).

Accordingly, it is possible to reduce friction between the radiating part 125(b) and the air passing through the filter support 124, so that the air is more easily filtered with the curved shape of the radiating part 125(b). It may perform a function to pass through the support 124 .

As shown in FIGS. 2 to 4 , an intake fan support 127 formed to support the intake fan 130 and move air may be provided at the end of the second region 126 on the side of the breathing space.

That is, since the intake fan 130 is interposed between the filter support 124 and the intake fan support 127 described above, the intake fan 130 may be stably disposed in the second region 126 .

The intake fan support 127 protrudes from the inner peripheral surface of the second central portion 128 (a) and the second region 126 and extends to the second central portion 128 (a), as shown in FIG. and may include a plurality of second radiating portions 128 (b) disposed to be spaced apart from each other.

Accordingly, the intake fan support unit 127 may not only support the intake fan 130 toward the first region 121, but also allow air introduced through the space between the plurality of second radiation units 128(b) to pass therethrough. .

In addition, as shown in FIGS. 2 to 4 , the second central portion 128 (a) may include an intake fan 130 support hole, and the intake fan 130 has an intake fan 130 support protrusion that engages the support hole ( 165 is formed, so that the intake fan 130 is effectively supported by the intake fan support 127 .

As shown in FIGS. 2 to 4 , the intake fan 130 may be disposed in the intake hole 120 to introduce air from the external space into the breathing space.

That is, the air in the external space is forcibly introduced into the intake hole 120 through the rotation of the intake fan 130 and provided to the breathing space after filtration, so that the user 10 is provided with filtered air more easily without self-inhalation. can breathe

As shown in FIGS. 2 to 4 , the filter 140 may be disposed in the intake hole 120 to filter the air introduced by the rotation of the intake fan 130 .

That is, the filter 140 filters and passes the air forced into the intake hole 120 by the intake fan 130 to provide purified air to the respiratory side of the user 10 in the breathing space, and at this time, the filter ( 140) can be manufactured to satisfy the KF index to have sufficient filtration performance.

As shown in FIGS. 1 to 3 , the outer cover 150 is coupled to the intake hole 120 , covers the inlet of the intake hole 120 , and an inlet hole 152 through which air can be introduced into the intake hole 120 . ) is provided with the intake surface 156 (a), and the intake surface 156 (a) is at least any one of the exterior and interior of the intake hole 120 so that the surface area of the intake surface 156 (a) is increased. It may be formed to protrude toward one.

That is, the intake surface 156 (a) having the inlet hole 152 is formed to protrude toward at least one of the outside and the inside of the intake hole 120, so that the surface area of the intake surface 156 (a) is increased. Since the open area of the inlet hole 152 toward the external space is increased, the amount of air introduced into the intake hole 120 through the inlet hole 152 may be increased.

As shown in FIGS. 1 to 4 , the outer cover 150 has an intake surface 156 (a) having an intake hole coupling part 155 coupled to the intake hole 120 and an inlet hole 152 ). It may include a cover portion 156 having a.

More specifically, the cover part 156 protrudes from the edge part 157 coupled to the intake hole coupling part 155 , the cover center part 158 , and the edge part 157 as shown in FIGS. 1 to 4 . It may include a plurality of cover radiating portions 159 that extend to the central portion of the cover 158 and are disposed to be spaced apart from each other.

Accordingly, the spaced space between the plurality of cover radiation parts 159 forms the aforementioned inlet hole 152 , and accordingly, as described above, air enters the intake hole 120 from the external space through the inlet hole 152 . can be introduced into

In addition, the cover center 158 may be inserted into the intake hole 120 side rather than the edge portion 157, and accordingly, as described above, the area open to the external space of the inlet hole 152 is increased, so that the inlet hole ( 152) can increase the amount of incoming air.

And as the outer cover 150 is defective at the inlet of the intake hole 120 , the center presses the filter 140 toward the filter support 124 , so that the filter 140 is stably supported in the first region 121 . have.

And as another example of the shape of the outer cover 150 , the outer cover 150 is coupled to the inlet of the intake hole 120 as shown in FIG. 5 and allows the lower air of the external space to flow into the intake hole 120 . It can be opened downwards. (See arrow 1 in FIG. 1)

That is, in the case of the external space, since the possibility that particles such as saliva and floating matter exist in the upper layer air is relatively higher than that in the lower layer, the outer cover 150 is opened downward so that the air of the lower layer of the external space can be introduced into the intake hole 120. Filtration performance can be improved more.

More specifically, the region in which the inlet hole 152 of the outer cover 150 is provided may protrude from the surface of the outer cover 150 as shown in FIG. 5 .

Accordingly, since the inlet hole 152 is further opened toward the lower layer of the external space, the amount of air introduced into the intake hole 120 may be increased.

As shown in FIGS. 2 to 4 , the exhaust unit 160 may be coupled to the mask 200 to exhaust the air of the breathing space in a direction different from the direction in which air is introduced from the external space.

Accordingly, not only the filtered air can be provided to the breathing space as described above, but also the air in the breathing space can be discharged to the external space when the user 10 exhales.

In addition, in this regard, the housing 110 may form the flow guide surface 112 to prevent the air discharged through the exhaust unit 160 from being mixed with the air flowing in from the external space according to the above-described directionality. Details are the same as described above.

2 to 4 , an exhaust valve 161 disposed in the exhaust unit 160 for one-way exhaust from the breathing space, and a valve supporting the exhaust valve 161 in the exhaust unit 160 . A support unit 162 may be further included.

The exhaust valve 161 is opened in one direction, that is, to the external space side, and when the user 10 exhales or filtered air with more than the volume of the breathing space is injected and the exhalation space becomes positive pressure, the air in the breathing space is transferred to the external space. can be discharged as

In addition, since it is not opened when the user 10 is inhaled, it is possible to prevent the unfiltered air of the external space from flowing into the breathing space through the exhaust unit 160 .

The valve support unit 162 may support the exhaust valve 161 in the exhaust unit 160 so that the one-way opening mechanism described above can be effectively performed.

As shown in FIGS. 2 to 4 , the battery 170 may be disposed in the housing 110 to supply electrical energy to the intake fan 130 .

Accordingly, since the device can be used without a separate electrical energy supply wire connection, the user 10 can easily use the device from the outside.

In addition, the battery 170 can be recharged and reused without needing to be replaced during discharging. Accordingly, a separate charging port for charging the battery 170 may be provided in the housing 110 .

1 to 4 , the mask 200 and the mounting unit 180 coupled to the mask 200 to couple the housing 110 and the exhaust unit 160 to the mask 200 may be further included. have.

That is, the mounting unit 180 is coupled to each of the housing 110 and the exhaust unit 160 to be coupled to the mask 200 , thereby coupling the housing 110 and the exhaust unit 160 to the mask 200 .

As shown in FIGS. 2 to 4 , the mounting unit 180 includes the first mounting piece 181 disposed on the inner surface of the mask 200 , and the mask 200 to correspond to the position of the first mounting piece 181 . It may include a second mounting piece 186 disposed on the outer surface of the first mounting piece 181 and coupled.

That is, in a state in which the mask 200 is interposed between the first mounting piece 181 and the second mounting piece 186 , the first mounting piece 181 and the second mounting piece 186 are coupled to the mounting unit 180 . It can be coupled to the mask 200 .

More specifically, the mounting unit 180 may further include an intake unit 189 as shown in FIGS. 2 to 4 , and in this case, the first mounting piece 181 includes the intake port 182 and the exhaust unit 160 . ) and an exhaust port 185 coupled, the intake portion 189 connects the intake port 182 and the intake hole 120 , and the second mounting portion 180 is a first insert into which the intake portion 189 is inserted. A hole 187(a) and a second insertion hole 187(b) into which the exhaust unit 160 is inserted may be provided.

2 to 4 , the intake portion 189 is formed to extend beyond the first insertion hole 187(a), and the housing 110 has the intake hole 120 protruding along the outer periphery of the outlet. A connection part 116 is formed, and the intake part 189 may be coupled to the connection part 116 .

The intake unit 189 may be coupled to the connection unit 116 so that the housing 110 is detachably connected to the mask 200 , and accordingly, the user 10 removes the housing 110 when necessary to clean, repair, and maintain the housing 110 . back can be

More specifically, as shown in FIGS. 2 and 3 , a second fitting groove 117 is formed on the inner peripheral surface of the connection part 116 , and the second fitting groove 117 is formed on the outer peripheral surface of the intake part 189 according to the rotation of the housing 110 . A second fitting protrusion 189(a) may be formed to engage the fitting groove 117 to couple the connection portion 116 to the intake portion 189 . Accordingly, it is possible to prevent the housing 110 from being arbitrarily detached from the mounting unit 180 .

In addition, as shown in FIGS. 2 and 3 , the second fitting protrusion 189 (a) and the second fitting groove 117 are coupled to the aforementioned flow guide surface 112 on the exhaust unit 160 . It may be arranged so as to be located in the

As shown in FIG. 3, on the inner circumferential surface of the connection part 116, a second separation guide ( 118) may be formed.

That is, the housing 110 can be more easily removed through the second separation guide 118 , and the second separation guide 118 can also be utilized when the connection part 116 is coupled to the intake part 189 . .

As shown in FIGS. 2 to 4 , the valve support unit 162 is disposed at the exhaust port 185 to support the exhaust valve 161 toward the second mounting piece 186 and discharge the air of the breathing space to the outside. The first valve support part 163 formed to do so, the support protrusion 165 formed to protrude from the first valve support part 163, and the second insertion hole 187(b) to cover the second insertion hole 187(b) to allow air to be discharged. It may include a second valve support part 166 formed on the mounting piece 186 and fitted with the support protrusion 165 to support the exhaust valve 161 toward the first mounting piece 181 .

In this case, the support protrusion 165 formed on the first valve support part 163 is fitted with the second "e-b support part, so that the first mounting part 180 and the second mounting part 180 can be coupled.

As shown in FIGS. 2 to 4, the first valve support 163 protrudes from the inner peripheral surface of the third central portion 164 (a), from which the support protrusion 165 is derived, and the exhaust port 185 to the third central portion ( It may include a plurality of third radiation portions 164 (b) extending to 164 (a) and spaced apart from each other.

The second valve support 166 is, as shown in FIGS. 2 to 4 , a fourth central portion 167 (a) having a support groove 167 (b) formed to engage the support protrusion 165 ). , and a plurality of fourth radiating parts 167 (c) that protrude from the outer periphery of the second insertion hole 187 (b), extend to the fourth central portion 167 (a), and are spaced apart from each other. have.

As shown in FIGS. 2 to 4 , the air inlet 182 may be provided with a dispersing part 183 formed to disperse the air introduced into the breathing space.

More specifically, as shown in FIGS. 2 to 4 , the dispersing part 183 protrudes from the inner peripheral surface of the fifth central portion 184 (a) and the intake port 182 to the fifth central portion 184 (a). It may include a plurality of fifth radiation portions 184 (b) that extend and are disposed to be spaced apart from each other.

2 to 4, the coupling protrusion 188 is formed to protrude from the outer periphery of the second insertion hole 187 (b), and the exhaust unit 160 is formed to extend beyond the coupling protrusion 188. And, on the outer peripheral surface of the end side of the exhaust unit 160, the coupling cover 168 may be formed to protrude to cover the end of the coupling protrusion 188.

Accordingly, it is possible to prevent the first mounting unit 180 and the second mounting unit 180 from being arbitrarily separated after being coupled.

In the above, an embodiment of the present invention has been described, but those of ordinary skill in the art can add, change, delete or add components within the scope that does not depart from the spirit of the present invention described in the claims. It will be possible to variously modify and change the present invention by, etc., which will also be included within the scope of the present invention.

10: user
100: air filter device
110: housing
112: flow guide surface
114: refraction projection
116: connection part
117: second fitting groove
118: second separation guide
120: intake hole
121: first area
122: fitting groove
123: separation guide
124: filter support
125(a): central
125(b): radiating part
126: second area
127: intake fan support
128(a): second center
128(b): second radiating unit
130: intake fan
140: filter
150: outer cover
152: inlet hole
154: fitting projection
155: intake hole coupling part
156: cover part
156(a): intake surface
157: border
158: cover center
159: cover radiating unit
160: exhaust
161: exhaust valve
162: valve support unit
163: first valve support
164(a): third core
164(b): third radiating unit
165: support projection
166: second valve support
167(a): fourth core
167(b): support groove
167(c): fourth radiating unit
168: combined cover
170: battery
180: mounting part
181: first mounting piece
182: intake port
183: dispersion unit
184(a): Fifth Central
184(b): fifth radiating unit
185: exhaust port
186: second mounting piece
187(a): first insertion hole
187(b): second insertion hole
188: bonding protrusion
189: intake
189(a): second fitting projection
200: mask

Claims (10)

An air filtering device mounted on a mask for partitioning a breathing space from an external space by covering at least one of a user's nose and mouth,
a housing coupled to the mask;
an intake hole formed through the housing to move air from the external space to the breathing space;
an intake fan disposed in the intake hole to introduce air from the external space into the breathing space;
a filter disposed in the intake hole to filter the air introduced by the rotation of the intake fan;
and an intake surface coupled to the intake hole, covering an inlet of the intake hole, and having an inlet hole through which air can be introduced into the intake hole, and the intake surface is positioned outside and inside the intake hole so that the surface area of the intake surface is increased an outer cover formed to protrude toward at least one of;
an exhaust unit coupled to the mask and capable of discharging air in the breathing space in a direction different from that in which air is introduced from the external space; and
and a battery disposed in the housing to supply electrical energy to the intake fan.
The method of claim 1,
The intake hole is
a first region to which the outer cover is coupled and the filter is disposed; and
and a second area in which the intake fan is disposed.
3. The method of claim 2,
The outer cover is detachably coupled to the first region to replace the filter,
A fitting groove is formed on the inner circumferential surface of the first region,
An air filtering device having a fitting protrusion formed on an outer circumferential surface of the outer cover to engage the fitting groove as the outer cover rotates to couple the outer cover to the first region.
4. The method of claim 3,
A separation guide of a spiral structure is formed on the inner circumferential surface of the first area so that the outer cover is drawn out and separated when the outer cover coupled to the first area is reversely rotated.
3. The method of claim 2,
A filter support portion is disposed at an end of the first region on the side of the second region to support the filter and move air,
The filter support part,
and a plurality of radiating parts protruding from the inner circumferential surface of the first region and extending in a central direction,
The plurality of radiating portions are bent in a rotational direction of the intake fan, the air filtering device.
According to claim 1,
the mask; and
A mounting part coupled to the mask to couple the housing and the exhaust part to the mask,
The mounting part,
a first mounting piece disposed on the inner surface of the mask; and
and a second mounting piece disposed on the outer surface of the mask to correspond to the position of the first mounting piece and coupled to the first mounting piece.
According to claim 1,
The housing is disposed on the exhaust to prevent the air discharged through the exhaust from being mixed with the air introduced through the inlet hole to form a flow guide surface for guiding the flow of the discharged air laterally, air filtration device.
8. The method of claim 7,
The flow guide surface is curved so that the air discharged through the exhaust can be discharged laterally along the user's face, the air filtering device.
9. The method of claim 8,
The end of the flow guide surface side of the exhaust portion is inclined to correspond to the flow guide surface, the air filtering device.
8. The method of claim 7,
The flow guide surface is provided with a deflection protrusion protruding from the end side surface so as to be able to refract the air discharged from the exhaust unit toward the face of the user, the air filtering device.

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