KR101919326B1 - Air cleaner - Google Patents

Abstract

An air purifier according to one aspect of the present invention includes: a main body having an inlet through which air flows and an outlet through which air is discharged; A partition which divides the inside of the main body into a first space and a second space and has a plurality of flow holes through which air can pass; A suction fan installed in the first space and sucking air into the main body; And a filter member provided in the second space, the air introduced into the first space by the suction fan is primarily filtered in the process of passing through the plurality of flow holes, and the air passing through the plurality of flow holes Air is secondarily filtered by the filter element.

Description

Air cleaner

The present invention relates to an air purifier.

Because the indoor space is not easily ventilated, indoor air is easily polluted by the dust generated in daily life.

Since the indoor air is polluted, various health problems may occur, and since the user may feel uncomfortable feeling of life, the installation of the air purifier is increasing in recent years in order to protect the health and feel comfortable life.

The air purifier is configured to filter foreign materials visually seen in the form of circulating indoor air by a blowing fan through a nonwoven filter in a nonwoven fabric filter.

There are air pollutants in the range of millimeters (mm) visually verifiable from the visually recognizable indoor air to tens of microns, which can not be visually confirmed, and a variety of bacteria. Therefore, development of an air filter technology capable of filtering all of them is proceeding.

An example of such technology development is the "Air sterilization purification device" of Korean Patent Laid-Open No. 10-2011-0090539 (Published on Aug. 10, 2011).

On the other hand, existing air purifiers have a disadvantage that they are difficult to carry because they are bulky.

An object of the present invention is to provide an air purifier which is easy to carry and which can purify air even without a separate power source,

An air purifier according to one aspect of the present invention includes a main body having an inlet through which air flows and an outlet through which air is discharged; A partition which divides the inside of the main body into a first space and a second space and has a plurality of flow holes through which air can pass; A suction fan provided in the first space and sucking air into the main body; And a filter member provided in the second space, the air introduced into the first space by the suction fan is primarily filtered in the process of passing through the plurality of flow holes, and the air passing through the plurality of flow holes Air is secondarily filtered by the filter element.

The filter member may include a hollow fiber membrane bundle having micropores formed therein and a fixing unit for fixing the bundle of hollow fiber membranes, and a discharge unit through which the purified air is discharged from the hollow fiber membrane may be formed in the fixing unit.

The fixing portion is fixed to the inside of the main body, and the discharge portion formed in the fixing portion can communicate with the discharge port formed in the main body.

The main body is provided with a discharge space formed by being recessed from the outer circumferential surface, and the discharge port can be formed inside the discharge space.

The plurality of flow holes may be formed along a rim of the partition.

The air cleaner may further include a cover member provided on the body to cover the discharge space, and the cover member may be slidably mounted.

The air purifier may further include an opening / closing unit for preventing the inlet from being contaminated by external contaminants.

The main body may be made of a transparent material.

The air cleaner may further include a hook connecting ring or a strap provided on the main body.

An air purifier according to another aspect includes a main body having an inlet through which air flows and an outlet through which air is discharged; A filter member accommodated in the main body and disposed between the inlet and the outlet, the filter member for purifying the air flowing into the inlet; A suction fan for sucking air into the main body; A mask communicating with the discharge port to supply purified air from the filter member to the wearer; And a connection hose connecting the discharge port and the mask.

The air purifier may further include a battery provided in the main body for supplying power to the suction fan, and a charging terminal for charging the battery.

The air purifier further includes a charging module connected to the charging terminal to supply power to the main body, and the main body can be supported by the charging module.

The air purifier may further include a mask storage unit that is provided in the charging module and in which a space for storing the mask is formed.

The air purifier may further include a sterilizing device provided in the mask storage part for sterilizing the mask.

The air purifier according to the present invention is advantageous in that it is small in size and light in weight and easy to carry.

Further, since the internal flow path of the air purifier is bent into a plurality of internal flow paths, the length of the flow path is increased, and the purification effect is improved.

1 is a perspective view of an air purifier according to an embodiment of the present invention.
2 is an exploded perspective view of the air purifier of FIG.
3 is a longitudinal sectional view of the air purifier of FIG.
Fig. 4 is a bottom view of the upper cover of Fig. 2; Fig.
Fig. 5 is a view showing the compartment of Fig. 2. Fig.
FIG. 6 is a view showing the filter member of FIG. 2. FIG.
FIG. 7 is a view showing the opening and closing part of FIG. 2. FIG.
8 is a front view of the air purifier according to the second embodiment of the present invention.
9 is an exploded perspective view of the air purifier of Fig.
10 is a view showing a state where the air purifier of FIG. 8 is mounted on the charging module.
11 is a side view of Fig.
12 is a perspective view of the mask of Fig.
13 is a rear perspective view of the mask of Fig.
FIG. 14 is a front view and a rear view of the mask of FIG. 12;
Fig. 15 is a view showing an example of use of the air purifier of Fig. 8 and the mask of Fig. 12;
16 is a photograph of a hollow fiber membrane having a porous layer formed according to the present invention at an electron microscope of 700 magnification.
17 is a photograph of a hollow fiber membrane coated with a hydrophilic filler according to the present invention and having pores filled with a hydrophilic filler at an electron microscope of 3000 magnifications.
18 is a flowchart showing an embodiment of a method for manufacturing a hollow fiber membrane according to the present invention.

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

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

FIG. 1 is a perspective view of an air purifier according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the air purifier of FIG. 1.

Referring to FIGS. 1 and 2, an air purifier 100 according to an embodiment of the present invention includes an upper cover 10, a lower cover 20, and a filter member 50.

The upper cover 10 and the lower cover 20 may be vertically coupled to each other. The combination of the upper cover 10 and the lower cover 20 may be referred to as a main body.

The upper cover 10 and the lower cover 20 may each have an inner space. Accordingly, a predetermined space may be formed in the body, which is an assembly of the upper cover 10 and the lower cover 20.

The filter member (50) can be received in the internal space of the main body.

The lower cover 20 may be formed with an inlet through which the contaminated air flows and an outlet through which the air purified by the filter member 50 is discharged from the upper cover 10.

The discharge port of the upper cover 10 may be provided inside the discharge space 13. The discharge space 13 may be recessed from the outer circumferential surface of the upper cover 10 to the inside of the upper cover 10. The discharge space 13 may receive a hose or the like connected to the discharge port.

The hose connected to the discharge port may be provided with a mask such as that provided on a gas mask. Accordingly, the user can suck the air purified by the air cleaner 100 after wearing the mask.

The filter member 50 may include a bundle of hollow fiber membranes 51 and a fixing portion 53. The bundle of the hollow fiber membranes 51 may be arranged so as to form a spiral as shown in the drawings, but is not limited thereto.

The hollow fiber membrane 51 includes a plurality of micropores, and can purify the polluted air using the micropores.

The hollow fiber membrane 51 may be fixed to the fixing portion 53. For example, both ends of the hollow fiber membrane 51 may be fixed to the fixing part 53 by an adhesive, but the present invention is not limited thereto.

The details of the hollow fiber membrane 51 will be described in detail below with reference to FIG.

The air cleaner 100 may further include a suction fan 30 for sucking outside air. The suction fan 30 may be provided on the inner side of the lower cover 20. The air purifier 100 may further include a battery for applying power to the suction fan 30. [ The battery can be charged separately, so that the air cleaner 100 can be used for portable purposes.

The air cleaner 100 may further include a partition 40 disposed between the suction fan 30 and the filter member 50.

The partition 40 is provided between the upper cover 10 and the lower cover 20, and the inner space of the main body is divided into two spaces.

The lower space of the partition 40 may be referred to as a first space and the upper space of the partition 40 may be referred to as a second space. Accordingly, the suction fan 30 is disposed in the first space, and the filter member 50 is disposed in the second space.

The partition 40 may be provided with a plurality of flow holes 43 through which air can flow. The plurality of flow holes 43 may be formed along the rim of the partition 40. However, the present invention is not limited to such a configuration.

The air introduced into the first space may be radially moved along the rim where the plurality of flow holes (43) of the partition (40) are formed.

The air purifier 100 may further include an opening / closing part 60 provided below the lower cover 20. The opening / closing part 60 will be described later.

Also, although not shown, the opening / closing part 60 may be connected to the lower cover 20 by a ring or the like.

The air cleaner 100 may further include a strap 103. The strap 103 is for allowing the user to attach the air cleaner 100 to a backpack, a baby carriage, etc., and improve the portability of the air cleaner 100.

The strap 103 may be provided on the upper cover 10. However, the strap 103 may be provided on the lower cover 20, unlike the one shown in FIG.

The air cleaner 100 may further include a hook connection loop 105. [ The hook connection loop 105 may be provided on the upper cover 10. However, unlike the illustrated embodiment, the hook connection loop 105 may be provided in the lower cover 20 as well.

The hook connection loop 105 is adapted to be worn on the user's clothes or the like and can improve the portability of the air purifier 100 like the strap 103.

FIG. 3 is a longitudinal sectional view of the air purifier of FIG. 1, FIG. 4 is a bottom view of the upper cover of FIG. 2, FIG. 5 is a view showing the partition of FIG. 2, And Fig. 7 is a view showing the opening and closing part of Fig.

3 to 7, the lower cover 20 may be formed with an inflow portion 22 through which contaminated air flows. An inflow port 23 may be formed in the inflow part 22 and contaminated air introduced through the inflow port 23 may be introduced into the first space inside the main body.

The inlet (22) may be provided on the bottom surface of the lower cover (20). Specifically, the inflow portion 22 may be recessed on the bottom surface of the lower cover 20 as shown in FIG.

A separate hose may be connected to the inlet 22. The contaminated air introduced into the hose can be introduced into the body through the inlet (23).

The inlet (22) can be opened and closed by the opening / closing part (60). Accordingly, the inlet 23 provided in the lower cover 20 can be protected from external contamination.

The opening and closing part 60 may include a body part 62 and an extension part 64 extending upward from the body part 62. The extension 64 may be inserted into the inlet 22 of the lower cover 20.

The opening / closing part 60 may be made of rubber, synthetic resin, or the like, but is not limited thereto.

The air sucked by the suction fan (30) can be introduced into the first space and then moved to the second space through the plurality of flow holes (43).

The air sucked by the suction fan (30) may be primarily filtered in the process of passing through the plurality of flow holes (43).

The air introduced into the second space may be secondarily purified by the hollow fiber membrane 51 of the filter member 50.

The fixing portion 53 may be coupled to the upper cover 10. A connection portion 14 to which the fixing portion 53 is connected may be provided on an inner circumferential surface of the upper cover 10.

A hole 15 may be formed in the connection part 14 and the fixing part 53 may be inserted into the hole 15. The connecting portion 14 may be formed to extend inward from the inner circumferential surface of the upper cover 10 as shown in the figure, but the present invention is not limited thereto.

The fixing part 53 may be provided with a discharge part 55. The discharge portion 55 communicates with the discharge port of the upper cover 10. Therefore, the air filtered in the hollow fiber membrane 51 can be discharged to the outside through the discharge unit 55.

The air purifier 100 may further include a cover member (not shown) for opening and closing the discharge space 13 of the upper cover 10. The cover member may be slidably mounted. The cover member can prevent the discharge port 53 from being contaminated by external contaminants.

Hereinafter, the air purifier 200 according to the second embodiment of the present invention will be described in detail.

FIG. 8 is a front view of the air purifier according to the second embodiment of the present invention, and FIG. 9 is an exploded perspective view of the air purifier of FIG.

8 and 9, the air purifier 200 according to the second embodiment of the present invention includes a main body 210, an inlet 220, a discharge portion 230, and a filter member 240 . The filter member 240 may be received in the main body 210.

The air introduced through the inlet 220 may be purified through the filter member 240 in the body 210 and then discharged through the outlet 230. The user can suck the air discharged through the discharge portion 230.

The inflow part 220 includes a cover part 222 connected to the main body, and the cover part 222 may be formed with an inflow port 223 through which air is sucked.

The cover part 222 may be detachably connected to the main body part 210. Further, the cover part 222 may be screwed to the main body part 210.

As shown in the drawing, the inlet 223 may be formed on the bottom of the cover 222, but the present invention is not limited thereto. Specifically, the inlet 223 may be formed on the side surface of the cover 222. In addition, the inlet 223 may be formed by removing the bottom of the cover 222.

A suction fan 225 may be formed inside the inflow portion 220. The suction fan 225 may be driven to suck outside air into the main body 210 and flow into the filter member 240. That is, the suction fan 225 may be provided on the upstream side of the filter member 240. The suction fan 225 may be driven by a driving motor 227.

The filter member 240 may include a casing 242 and a hollow fiber membrane 244 received in the casing 242. The hollow fiber membrane 244 may have the same construction as the hollow fiber membrane 51 of the filter member 50 of the previous embodiment. The hollow fiber membrane 244 includes a plurality of fine pores and can purify contaminated air using the plurality of fine pores.

The micropores of the hollow fiber membrane may have a size of several microns (micron), and the functional material may be filled in the micropores. For example, the functional material may be a static-inducible material. By using such a functional material, it is possible to effectively remove fine dust, bacteria, mold, and the like.

The casing forms the outer shape of the filter member 240. The casing may have a cylindrical shape as shown in the drawing, but is not limited thereto, and may be formed in a disc shape or a rectangular parallelepiped shape.

The upper and lower ends of the filter member 240 may be opened. From the flow side of the air, it can be seen that the upstream side and the downstream side are opened. Accordingly, the air flowing into the inflow part 220 flows into the hollow fiber membrane inside the casing and is purified and discharged.

The filter member 240 may further include additional filter members such as activated carbon or other adsorbent members. For example, the filter member 240 may further include a member capable of purifying toxic gases. Accordingly, the air purifier 200 can be used for accident sites, military operations, etc. where toxic gas is generated Can be used.

The discharge unit 230 may be coupled to the upper end of the main body 210. For example, the discharge portion 230 may be screwed to the main body 210.

The discharge unit 230 may include a discharge port 233 through which air is discharged. A hose, a mask, or the like may be connected to the discharge portion 233, and the purified air can flow through the discharge portion 233.

Meanwhile, the inlet 220 and the outlet 230 may be collectively referred to as a main body 210 in combination with the main body 210. The inlet 220 and the outlet 230 may be formed integrally with the body 210.

The main body 210 may include a switch 214 for operating the suction fan 225.

In addition, the main body 210 may further include a status indicator 216. The status indicator 216 may indicate the on / off status of the air purifier 200, or may indicate a polluted state of the indoor air.

Also, the main body 210 may further include a charging terminal 218. A battery may be provided in the main body 210. When power is supplied to the charging terminal 218, the battery may be charged. By charging the battery, the air purifier 200 can be used for portable use.

Other embodiments are suggested.

The air purifier 200 may further include a suction pump (not shown) provided on the downstream side of the filter member 240. The suction pump may function to suck air and flow to the discharge unit 230. As described above, when the suction pump is provided, the suction fan 225 may not be provided.

FIG. 10 is a view showing a state where the air purifier of FIG. 8 is mounted on a charging module, and FIG. 11 is a side view of FIG.

Referring to FIGS. 10 and 11, the air purifier 200 may further include a charging module 250.

The charging module 250 may include a charging unit 252 connected to the charging terminal 218 of the main body 210. The charging unit 252 may support the main body 210.

The air purifying function can be performed by operating the suction fan 225 after the main body 210 is mounted on the charging module 250. Accordingly, the suction fan 225 can be operated in a domestic or a certain space to clean the air. It is possible to effectively purify the air in the bedroom, the study room, the car interior, and the like.

The charging module 250 may be provided with a mask storage part 260 in which a space for storing the mask 300 is formed. An opening 261 is formed in the mask storage part 260 and the mask 300 can be drawn or drawn through the opening part 261.

The mask storage unit 260 may further include a door 262 for opening and closing the opening 261. Accordingly, foreign substances such as dust can be prevented from entering into the mask storage unit 260.

In addition, a sterilizing device for sterilizing the mask 300 may be provided in the mask storage part 260. The sterilization apparatus may include an ultraviolet lamp or the like. It is possible to maintain the cleanliness of the mask 300 by sterilizing the mask 300 using the sterilizing apparatus.

The charging module 250 may include a control unit 254. The charging module 250 is electrically connected to the main body, and the user can control the main body through the control unit 254. [ In detail, the control unit 254 may be provided with an " operation button ". When the user presses the operation button, the driving motor 227 provided in the main body operates to rotate the suction fan 225 have. Accordingly, the air cleaner 200 can purify the ambient air.

Also, the charging module 250 may be provided with a display unit for providing status information of the air purifier 200 or indoor air condition information to the user.

The user can wear the mask 300 and the purified air discharged from the discharge unit 230 can be supplied directly to the user's mouth or nose through the mask 300.

Hereinafter, the mask 300 will be described in detail.

12 is a perspective view of the mask of Fig. 10, Fig. 13 is a rear perspective view of the mask of Fig. 12, Fig. 14 is a front view and a rear view of the mask of Fig. 12, Fig. 8 is a view showing an example of use of a mask.

Referring to FIGS. 12 to 15, the mask 300 includes a mask body 310, and wearing members 320 and 330.

The mask body 310 can perform a function of wrapping the wearer's nose and mouth. Thus, contaminated air can be prevented from being sucked through the nose and mouth of the wearer. The mask body 310 may be formed in a three-dimensional shape having an inner space so that the wearer can easily breathe.

The mask body 310 may be made of synthetic resin. Accordingly, the mask body 310 can be used semi-permanently, and can be cleaned with detergent, water, or the like.

The mask body 310 may be provided with an inlet 314 having an air inlet 315 through which purified air flows and a outlet 316 with an outlet 317 for discharging the user's exhalation have.

The inlet 314 may protrude from the mask body 310 and the outlet 316 may be disposed below the inlet 314. Accordingly, the air flowing through the inflow portion 314 is discharged toward the nose of the wearer, and the exhalation discharged from the mouth of the wearer can be discharged to the outside through the discharge portion 316. The wearer's exhalation can be discharged through the discharge portion 316, thereby preventing the wearer's glasses from being frozen due to the expiration of the wearer. However, the arrangement of the inflow portion 314 and the discharge portion 316 is not limited to the above. That is, the discharge portion 316 may be disposed above the inflow portion 314.

The mask body 310 may be provided with a first wearing member 320 and a second wearing member 330. The first wearing member 320 is provided with a first engaging portion 324 and the second wearing member 330 is provided with a second engaging portion 334.

The first engaging portion 324 and the second engaging portion 334 can be engaged with each other. The wearer wears the mask 300 by connecting the first engagement portion 324 and the second engagement portion 334 to the back of the wearer's head after the nose and mouth are wrapped using the mask body 310 .

The mask 300 and the air cleaner 200 may be connected to each other by a connection hose 270. Specifically, the connection hose 270 may connect the discharge portion 230 of the air purifier 200 and the air inlet 325 of the mask 300 to each other. Accordingly, the air purified in the air cleaner 200 can be discharged to the air inlet 325 through the connection hose 270. The wearer of the mask 300 may suck purified air supplied through the air inlet 325.

Meanwhile, the main body 210 of the air purifier 200 may be worn on the body of the wearer by a belt 290. That is, the main body 210 of the air cleaner 200 is worn on the wearer's body, and the mask 300 covers the wearer's nose and mouth. Accordingly, the wearer can suck purified air from the air cleaner 200 even while moving.

Since the mask 300 is used together with the air purifier 200, the mask 300 can be regarded as a component included in the air purifier 200.

The air purifier 200 may be used for a safety mask or a military operation mask used for disaster relief such as an aseptic mask used in a hospital, a safety mask used in a laboratory, a fire, an earthquake, etc., And can be used for various purposes.

As described above, in this embodiment, purified air is forcedly supplied to the mask 300 by a predetermined amount through the air purifier 200 equipped with the hollow fiber membrane 244 capable of filtering fine dust, microorganisms and bacteria. And a phenomenon in which the wearer feels discomfort due to the mask 300 due to the shape of the mask 300 can be minimized. Accordingly, there is an advantage that purified air can be supplied to the wearer during walking as well as during walking.

Hereinafter, the structure and manufacturing method of the hollow fiber membranes 51 and 244 will be described in detail.

FIG. 16 is a photograph of a hollow fiber membrane having a porous layer formed thereon according to the present invention at an electron microscope of 700 magnification. FIG. 17 is a photograph of a hollow fiber membrane coated with a hydrophilic filler according to the present invention, This is a picture taken at a magnification of 3000.

16 and 17, the hollow fiber membrane according to the present invention will now be described.

A fiber braid fabric, a plurality of pores, and a porous layer formed on the surface of the fabric braid fabric and a hydrophilic filler filling the pores.

First, as shown in FIG. 16, the fiber braid fabric is made of a plurality of filaments and is made of polyester, polysulfone, polyethersulfone, PPS (polyphenylene sulfide), PAN (polyethersulfone) And is made of any one material selected from cellulose acetate, polypropylene, nylon, polyetheramide, polyamide, CF (Carbone fiber) and GF (glass fiber).

The fibrous braid fabric shown in FIG. 16 is made of a material dissolvable in the solvent of the dope solution used when forming the porous layer. When the porous layer is formed, part of the fabric of the fiber braid is dissolved, So that the bonding force can be improved.

The space between the filaments of the fabric braid fabric is filled with a polymeric material.

The porous layer is preferably formed on the surface of the fiber braid fabric and has a thickness of 1 to 30 μm and a plurality of pores having a size of 1 to 30 μm on the outer surface.

Accordingly, the porous layer has a large pore size of micro or more, and thus can be used repeatedly while being cleaned, and it is possible to suppress the phenomenon of being discharged to the filtrate again after particle removal.

The porous layer may be formed of at least one selected from the group consisting of polyvinylidene fluoride (PVDF), polyethersulfone, polysulfone, polyacrylonitrile, polyimide, polyamideimide, , Polyurethane, polystyrene, polyarylsulfone, ethylenechloro-trifluoroethylene (ECTFE), or a mixture of polymers listed above, or a synthetic polymer.

As shown in FIG. 17, the pores of the porous layer are filled with a hydrophilic filler to fill the pores. The hydrophilic filler may be a polyvinyl alcohol (PVA) or a hydrophilic vinyl polymer, A hydrophilic vinyl-based monomer, a cross-linking agent, and a natural polymer capable of being in a hydrogel state after being fixed to the pores.

With the above configuration, the particle removal rate is at the level of the ultrafiltration membrane (UF) to the microfiltration membrane (MF), and the water permeability is increased to 1.5 to 10 times that of the conventional membrane after the permeation state of the hollow fiber membrane is stabilized.

18 is a flowchart showing an embodiment of a method for manufacturing a hollow fiber membrane according to the present invention.

Referring to FIG. 18, a hollow fiber membrane manufacturing method according to the present invention includes a first coating step (S100) of infiltrating a first polymer material solution into a fiber braid fabric, a second coating step (S300) for forming pores in the porous layer, and a pore-filling step (S400) for filling the pores with the hydrophilic filler.

First, in the first coating step (S100), a fiber braid fabric composed of a plurality of filaments is impregnated into a first polymer material solution used as a dope solution so that a first polymer material solution is penetrated into the fabric of the fiber braid .

In this case, the first polymer material solution may be composed of 1 to 10% by weight of the polymer material and 90 to 99% by weight of the solvent.

The solvent according to the present invention may be selected from the group consisting of dimethylacetamide (DMAc), dimethylformamide (DMF), N-methylpyrrolidone (NMP), formamide, dimethylacrylmide DMAD), gamma-butyrolactone, dimethylsulfoxide (DMSO), tetrachloroethane (TCE), and dioxane.

In addition, the first polymer material solution may comprise 1 to 10 wt% of a polymer material, 49 to 99 wt% of a solvent, and 0 to 50 wt% of a swellable poor solvent.

The swelling poor solvent may be ethanol, methyl alcohol,

It may be any one of Ethylacetate, Tetrahydrofurane, Methylethylketone, Methylcellosolve, Methylene chloride, Isophorone, and Acetone. have.

The polymeric material according to the present invention may be selected from the group consisting of polyvinylidene fluoride, polyethersulfone, polysulfone, polyacrylonitrile, polyimide, polyamideimide Polyamideimide, polyurethane, polystyrene, polyacrylsulfone, and a mixture of the polymers listed above or a synthetic polymer.

The fiber braid fabrics according to the present invention may be used in various applications such as polyester, polysulfone, polyethersulfone, PPS (polyphenylenesulfide), PAN (polyethersulfone), cellulose acetate, polypropylene, , Nylon, polyetheramide, polyamide, CF (Carbone fiber), and GF (Glass fiber).

The solvent of the first polymeric material solution according to the embodiment of the present invention dissolves the fiber braid fabric partly and allows the polymeric material to penetrate, thereby improving the bonding strength between the polymeric material and the fiber braid fabric.

In other words, the solvent of the first polymer material solution dissolves a part of the fiber braid fabric so that the fiber braid fabric and the porous layer are integrally bonded after the completion of the production of the hollow fiber membrane, It can be prevented from breaking.

In the embodiment of the present invention, the fiber braid fabric is made of a material dissolvable by the solvent of the first polymer material solution. However, the fiber braid fabric of any one of the commonly used polyester, polypropylene, and nylon Or may be made of a material.

Also, in the embodiment of the present invention, the polymer material is diluted in the first polymer material solution at a low concentration of 1 to 10% so that the first polymer material solution penetrates deeply in the thickness direction of the fiber braid fabric.

Next, in the second coating step (S200), after the first coating step (S100), the fiber braid fabric is impregnated with the second polymeric material solution to form a porous layer on the surface of the fabric braid fabric.

At this time, it is preferable that the second polymer material solution has a higher concentration of the polymer material than the first polymer material solution.

The second polymeric material solution may be composed of 3 to 15% by weight of a polymer material and 85 to 97% by weight of a solvent, and the porous layer has a thickness of 1 to 30 탆.

Accordingly, in the second coating step S200, the concentration of the polymer material in the coated second polymer material solution is made higher than the concentration of the polymer material in the first polymer material solution, and the first polymer material The second polymer solution is coated on the fiber braid fabric impregnated with the solution to form a porous layer.

The porous layer may be formed to a thickness of 1 to 30 탆, more preferably 1 to 10 탆.

The polymer material of the first polymer material solution and the polymer material of the second polymer material solution may be mixed in the same or the same solvent system.

Next, in the pore forming step (S300), after the second coating step (S200), the porous layer formed on the surface of the fiber braid fabric is solidified to form large pores.

At this time, the pores have a size of 1 to 30 탆.

The hollow fiber membrane according to the embodiment of the present invention has pores formed in the porous layer having a large pore size of 1 to 30 탆, so that even when the air pressure is in the range of 0.01 to 0.2 kg / cm 2, LMH (L / m < 2 > hr), the actual filtration pressure is extremely low, i.e., 0.05 to 0.5 kg / cm < 2 >.

Therefore, the permeability of the hollow fiber membrane is not significantly lowered by the operating pressure.

In addition, since the porous layer is very thin and strongly adhered to the fiber braid fabric, the strength is superior to that of the conventional fiber braid fabric reinforcing film.

After the pore forming step S300 is performed, the fiber braid fabric and the polymer porous layer that have passed through the pore forming system may be washed through a plurality of water tanks before the next step.

Next, in the pore-filling step (S400), the pores of the porous layer are filled with the hydrophilic filler in a hydrogel state after the pore-forming step (S300) is performed.

In this case, the hydrophilic filler is made of any one of polyvinyl alcohol (POLY VINYL ALCOHOL, PVA) or a hydrophilic vinyl polymer, a hydrophilic vinyl monomer, a crosslinking agent, and a natural polymer capable of hydrogel state after being fixed to pores.

When the pores are filled with the polyvinyl alcohol (PVA), the polyvinyl alcohol (PVA) solution is coated on the surface of the porous layer having a plurality of pores to form a polyvinyl alcohol The polyvinyl alcohol (PVA) is caused to react with the aldehyde group (-CHO) to fill the pores of the polyvinyl alcohol (PVA) by crosslinking the aldehyde group (-CHO) after the alcohol (PVA) is filled.

At this time, the aldehyde group (-CHO) is made of any one of chemicals having an aldehyde group, formaldehyde, and glutaraldehyde.

When filling the pores with the hydrophilic vinyl-based monomer, a polymerization initiator is mixed with the hydrophilic vinyl-based monomer to form a mixture, and then the mixture is coated on the surface of the porous layer having a plurality of pores.

When the pores are filled with the mixture, the hydrophilic vinyl-based monomer is irradiated with heat treatment or infrared rays and ultraviolet rays to fill the pores by polymerization.

The hydrophilic vinyl-based monomer may be at least one selected from the group consisting of 2-hydroxyethyl methacrylate (HEMA), N-vinyl-2-pyrrolidone (NVP), acrylic acid, Acrylonitrile, methacrylonitrile, benzyl methacrylate, aryl methacrylate, alkyl acrylates having 1 to 8 carbon atoms in the alkyl group, and alkyl methacrylate .

When the pores are filled with the natural polymer, the natural polymer is coated on the surface of the porous layer having the plurality of pores and then reacted with the metal ions, so that the natural polymer is fixed to the pores in the hydrogel state to fill the pores.

At this time, the natural polymer is preferably composed of sodium alginate, and the metal ion is preferably calcium chloride (CaCl2).

When a hydrophilic polymer material is coated on a microfilter having a porous layer having pores having a size of 1 to 30 μm on the fiber braid, the polymer solution is easily impregnated by the capillary phenomenon formed by the pores of the membrane, Fill.

After the impregnation, the crosslinked polymer has a high water content when swollen in water, and maintains mechanical properties in the pores due to the hydrogen bonding force.

In addition, when the pressurized operation is performed for a predetermined time, the membrane fixed in the swollen pores is stabilized while being compacted, and excellent permeability and removal rate can be maintained.

When the hydrophilic polymer of the present invention is coated or impregnated with a general braided composite UF or MF membrane, the permeability is extremely reduced because it is required to be formed to have a certain thickness or more for stable fixing on the surface.

In addition, even if a hydrophilic polymer is thinly coated, improvement in permeability can not be expected, and there is a problem that the coating film peels or pinholes are generated.

A method for producing a hollow fiber membrane according to an embodiment using the polyvinyl alcohol (PVA) as a hydrophilic filler is as follows.

First, a first polymer material solution is infiltrated into a fiber braid fabric, a porous layer is formed on the surface of the fiber braid fabric impregnated with the first polymer material solution by using a second polymer material solution, pores are formed in the porous layer, A microfilter is prepared.

The material of the microfilter is PVDF, and the pore size is preferably 1 to 10 mu m.

The prepared capillary type microfilter is prepared in the form of a general hollow fiber membrane module (capillary module).

Then, an aqueous solution is prepared by dissolving polyvinyl alcohol (PVA) in a concentration of 1 to 12% in hot water at a designated temperature, and hydrogen chloride (HCl) is added to the aqueous solution as a catalyst in an amount of 1.1 to 0.5 N based on the total volume.

A microfilter made of the above hollow fiber membrane module (capillary module) is set up and circulated for 10 minutes to 30 minutes so that the aqueous solution can permeate the outer surface of the membrane with a pump to produce a hollow fiber membrane.

When the polyvinyl alcohol (PVA) is sufficiently treated and polyvinyl alcohol (PVA) permeates into the pores of the membrane (porous layer), the hollow fiber membrane is then dried at the specified temperature for a predetermined period of time.

The dried hollow fiber membrane is prepared by preparing a substance having -CHO group composed of aldehyde, formaldehyde, glutaraldehyde, etc. at a concentration of 0.5 to 20% and reacting with the membrane surface of the hollow fiber membrane by a pump .

At this time, it is preferable to circulate for 5 minutes, and the hollow fiber membrane reacted with the -CHO group is placed in a preheated oven at a temperature of 60 DEG C, and is allowed to stand for one day.

Next, the hollow fiber membrane dried in the oven is washed with washing water to remove unreacted material from the hollow fiber membrane to complete the production of the hollow fiber membrane.

When a polymer material is coated on a braided impregnated microfilter having a large pore size as in the present technology, the polymer solution is easily impregnated by the capillary phenomenon formed by the pores of the membrane, thereby blocking the pores of the membrane.

The impregnated, crosslinked polymer has a high water content when swollen in water, maintains its mechanical properties in the pores due to its hydrogen bonding force, and when it is pressurized for a certain period of time, the fixed membrane in the swollen pores is stabilized by the compaction, thereby maintaining excellent permeability and removal rate .

As described above, the air purifying filter according to the embodiment of the present invention can purify indoor air by filtering various kinds of odor molecules, pollutants, viruses and bacteria through the filter module including the porous hollow fiber membrane.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: air purifier 10: upper cover
20: lower cover 30: suction fan
40: partition 50: filter element

Claims (15)

An upper cover and a lower cover coupled to form an inner space;
A partition which is disposed between the upper cover and the lower cover and divides the inner space into a first space and a second space;
A suction fan disposed in the first space formed inside the lower cover;
A filter member disposed in the second space formed inside the upper cover;
A connection portion formed on an inner circumferential surface of the upper cover to be connected to the filter member;
An inflow portion formed on the bottom surface of the lower cover;
A discharge space formed to be recessed from an outer peripheral surface of the upper cover to an inner side of the upper cover; And
A plurality of flow holes formed along a rim of the partition; Lt; / RTI >
The air flowing into the first space through the inlet portion flows into the second space from the first space through the plurality of flow holes and is discharged through the outlet space in the second space. Air Purifier.
The method according to claim 1,
Wherein the filter member includes a hollow fiber membrane and a fixing unit to which the hollow fiber membrane is fixed,
Wherein the connection portion is formed with a hole into which the fixing portion is inserted.
3. The method of claim 2,
Wherein the fixing portion is provided with a discharge port communicating with a discharge port of an upper cover formed inside the discharge space.
3. The method of claim 2,
Wherein the hollow fiber membrane is formed into a spiral-
Wherein the fixing portion is coupled to one end of the hollow fiber membrane.
The method according to claim 1,
Wherein the connection portion is formed to extend inward from an inner circumferential surface of the upper cover.
The method according to claim 1,
Wherein the upper cover and the lower cover are provided to form an inner space, respectively, and the upper cover and the lower cover are coupled to each other in the vertical direction.
The method according to claim 1,
A discharge port is formed inside the discharge space,
And a hose connected to the discharge port is accommodated in the discharge space.
The method according to claim 1,
An inlet is formed at the center of the inflow portion,
And a hose communicating with the inlet is connected to the inflow portion.
The method according to claim 1,
Further comprising an opening / closing portion provided below the lower cover for opening / closing the inlet portion,
Wherein the opening and closing part includes a main body and an extension part extending upward from the main body part and inserted into the inflow part.
The method according to claim 1,
Further comprising a cover member for opening and closing the discharge space,
And the cover member is mounted to the discharge space to be slidably movable.
The method according to claim 1,
Wherein the upper cover is provided in a cylindrical shape with a lower surface opened,
Wherein the lower cover is provided in a cylindrical shape having an opened upper surface,
Wherein an open bottom surface of the top cover and an open top surface of the bottom cover are combined to form a single cylindrical shape.
3. The method of claim 2,
Wherein the hollow fiber membrane is formed of a bundle extending in a helical shape with a radius gradually decreasing along an inner surface of the second space.
The method according to claim 1,
Wherein the partition is formed in a circular plate shape so as to partition the inner space in the longitudinal direction.
The method according to claim 1,
Wherein the plurality of flow holes are formed in a ring shape in the partition.
3. The method of claim 2,
The hollow fiber membrane may include:
A fiber braid fabric comprising a plurality of filaments;
A porous layer formed on a surface of the fabric braid fabric and having a plurality of pores; And
And a hydrophilic filler provided on the plurality of pores.

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