KR20180108976A - Window type air cleaning system - Google Patents

Abstract

The present invention relates to a window type air purification system, which comprises: a housing having an air inflow hole for absorbing outdoor air on a front surface formed in an outdoor area and having an air supply hole for supplying the air into the housing on a rear surface formed in an indoor area; a blowing unit mounted on the housing and forcibly blowing the air; and a filter unit mounted on the housing and having a porous nano-web to filter fine dust. Accordingly, the system can be installed in a windowsill or a ventilation hole so as to increase compatibility and fine dust filtering performance.

Description

Window type air cleaning system {WINDOW TYPE AIR CLEANING SYSTEM}

The present invention relates to a window-type air purification system installed in a window frame to directly purify outdoor air and introduce it into a room, thereby simultaneously performing ventilation and air purification.

Generally, the ventilator is a device that keeps the indoor air in a pleasant state by letting outdoor air into the indoor and discharging indoor air to the outdoor.

In recent years, air pollution due to environmental pollution has become serious, and dust and fine dusts have increased, and indoor air can not be kept clean by simple ventilation that circulates outdoor air and indoor air.

Accordingly, an air purifier installed in a room to purify indoor air has been increasing. However, since the air purifier installed in the room purifies the contaminated room air, there is a problem that it is difficult to keep the indoor environment always pleasant.

To solve this problem, a window type air purification system has been developed in which outdoor air is directly purified and then supplied to the room to simultaneously perform ventilation and air purification.

The conventional dust filter for windows is disclosed in Korean Patent Laid-Open Publication No. 10-2016-0104130 (Sep. 05, 2016), and includes a frame installed in a window frame, a frame installed inside the frame, And the dustproof filter sheet is a nonwoven fabric or a fibrous sheet made of a cotton material and includes a porous sorbent material which blocks inflow of fine dust and yellow dust.

However, the conventional window dust filter for windows must have air permeability that air can pass through by natural ventilation. In this case, there is a problem that the nano-sized fine dust having a relatively small particle size can not be filtered, thereby deteriorating the purification performance.

Further, when the use time has elapsed, the pores of the dustproof filter sheet become clogged due to dust or the like, so that it is necessary to replace the filter frequently, which is inconvenient to use.

Korean Patent Publication No. 10-2016-0104130 (September 05, 2016)

Accordingly, it is an object of the present invention to provide an air cleaner which is installed on a window frame, directly purifies outdoor air and supplies it to the room to perform ventilation and air purification at the same time, and uses the nanofiber web as a filter to improve the filtering performance of small- So that the air purification performance can be improved.

It is another object of the present invention to provide a window-type air purification system which is equipped with a filter cleaning function to periodically clean the filter to keep the filtering performance constant, and to facilitate the use of the filter as the filter replacement period increases.

It is another object of the present invention to provide a window-type air purification system which can be installed in an exhaust system equipped with an existing exhaust duct, an exhaust port or a heat exchanger as well as a window frame to improve compatibility.

According to one aspect of the present invention, there is provided a window-type air purification system, comprising: a housing having an air inlet for sucking outdoor air on a front surface thereof positioned outside the room and an air supply port for supplying air to the room, An air blowing unit mounted on the housing for forcibly blowing air, and a filter unit mounted on the housing and formed of a porous nano-web to filter fine dust.

The housing has a protective portion for protecting the filter unit exposed to the outside on the front side, a rear side opened on the inside of the housing, and a rail portion for housing the window on the window frame or the ventilation opening on the outer surface.

The air blowing unit may include a motor fixed to the housing, a blade mounted on a driving shaft of the motor, and a guide member installed on a front surface of the blade to protect the blade and guide air into the room.

And a cleaning unit installed inside the housing and periodically cleaning the filter, wherein the cleaning unit includes an injection nozzle installed inside the housing for spraying air into the filter unit, and a connection unit connected between the blowing unit and the injection nozzle A control unit for controlling the forward and reverse rotations of the air blowing unit and controlling the opening and closing valves, and a control unit for controlling the opening and closing valves of the air blowing units, . ≪ / RTI >

The filter unit may include a filter member having a plurality of pores formed by an electrospinning method, and a support member mounted on an edge of the filter member to support the filter member.

Wherein the filter member is made by mixing an electrospun polymer material and a solvent at a certain ratio to prepare a spinning solution, spinning the spinning solution by electrospinning to make a nanofiber, and storing the nanofiber into a porous nano- As shown in FIG.

The nanofiber may have a diameter ranging from 0.5 to 3 mu m and an average pore size ranging from 0.2 to 10 mu m.

The surface of the porous nano-web may be laminated with a strength-strengthening layer for reinforcing the strength of the porous nano-web. The strength-reinforcing layer may be a mixture of a pigment, a binder for strength- have.

The filter member may include a porous substrate having a plurality of pores and a porous nano-web having a plurality of pores formed on one or both surfaces of the porous substrate and formed by an electrospinning method.

As described above, in the present invention, the air purification system is installed on the window frame to directly purify the outdoor air and supply it to the room to simultaneously perform the ventilation and the air purification. Also, the nanofiber web is used as a filter, The performance can be improved and the air cleaning performance can be improved.

In addition, since the filter cleaning function is provided to periodically clean the filter, the filtering performance can be maintained constant, and the use of the filter is facilitated as the filter replacement cycle is increased.

In addition, it can be installed in an exhaust device provided with an existing exhaust duct, an exhaust port or a heat exchanger as well as a window frame, so that compatibility can be improved.

1 and 2 are perspective views of a window-type air purification system according to an embodiment of the present invention.
3 is an exploded perspective view of a window-type air purification system according to an embodiment of the present invention.
4 is a cross-sectional view of a window-type air purification system according to an embodiment of the present invention.
5 is a configuration diagram of a cleaning unit according to an embodiment of the present invention.
6 is a block diagram of a cleaning unit according to an embodiment of the present invention.
7 is a perspective view of a filter unit according to an embodiment of the present invention.
8 is an enlarged view of a porous nanoweb according to an embodiment of the present invention.
9 is an enlarged view of a porous nanoweb according to another embodiment of the present invention.
10 is a sectional view of a filter member according to a second embodiment of the present invention.
11 is a cross-sectional view of a filter member according to a third embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience.

1 to 4, a window type air purification system according to an embodiment of the present invention includes a housing 10 installed on a window frame or a ventilation hole, an air blowing unit 36 And a filter unit 34 mounted facing the air blowing unit 36 and arranged to be exposed to the outside to purify the air.

The housing (10) has a rectangular shape with a front side and a rear side opened, an outdoor side housing (16) having an air inlet (18) located outside the room and introducing outdoor air, And an air inlet 20 for supplying an air to the housing 10 is formed on the outer surface of the housing 10. A railing 12 for mounting the housing 10 on the window frame or the ventilation opening is formed on the outer surface of the housing 10 .

The front surface of the outdoor side housing 16 prevents foreign matter having a relatively large area from being introduced into the filter unit 34 and protects the filter unit 34 from the external environment and forms a slotted air inlet 18 The protective portion 41 is mounted.

The air blowing unit 36 includes a motor 22 fixed to a supporter 60 installed in a cross shape in the interior of the indoor housing 14 and a motor 22 connected to the motor 22 and rotated by the rotational force of the motor 22 And a guide member 26 mounted on the front surface of the blade 24 to guide the air blown by the blade 24 into the room and protect the blade 24.

A filter insertion portion 28 into which the filter unit 34 is inserted is formed on the inner surface of the indoor housing 16 and an entrance port through which the filter unit 34 is drawn out and drawn is formed on the back surface or side surface of the housing 10 The filter unit 34 can be easily drawn out through the entrance when the filter unit 34 is replaced, thereby facilitating the replacement operation of the filter unit 34. [

Inside the housing 32, a cleaning unit 80 for periodically cleaning the filter unit 34 as shown in Figs. 5 and 6 is provided.

Since the filter unit 34 according to this embodiment uses a porous nano-web and is installed in a state exposed to the outside, fine dust, yellow dust, and other harmful substances do not adhere to the surface of the porous nano- And is naturally separated from the surface of the substrate 34.

However, in the case of fine dust having a nanoparticle size, it may accumulate in the pores of the filter unit 34, thereby blocking pores. At this time, dust adhering to the surface of the filter unit 34 is periodically separated, A cleaning unit 80 is used to maintain the filtering performance of the filter 34. [

The cleaning unit 80 includes at least one or more spray nozzles 82 disposed at the rear of the filter unit 34 for spraying air to the filter unit 34 and at least one spray nozzle 82 for spraying air to the filter unit 34, An air passage 84 connected to the air supply passage 84 and providing an air blowing pressure generated in the air blowing unit 36 to the injection nozzle 82 and an opening and closing valve 86 provided in the air passage 84 for opening and closing the air passage 84, And a control unit 88 for controlling the forward and reverse rotation and the opening / closing valve 86 of the air blowing unit.

Then, the control unit 88 operates the cleaning unit 80 to perform the cleaning operation of the filter unit 34 when the operation time of the air purification system is set by the timer 90 by the timer unit 90.

The control unit 88 controls the blowing unit 36 to rotate in the reverse direction when the operation time of the air cleaning system exceeds a predetermined time and opens the open / To the air passage (84). Air is jetted from the jet nozzle 82 to the rear surface of the filter unit 34 to vibrate the filter unit 34 to drop dust accumulated on the surface of the filter unit 34, Air is allowed to pass therethrough to remove dust accumulated in the pores of the filter unit 34.

Such a process is repeated periodically so that the filter unit 34 can be kept clean at all times and thus the air cleaning performance can be kept constant.

7, the filter unit 34 includes a filter member 52 having a plurality of pores and a support member 50 mounted on an edge of the filter member 52 and supporting the filter member 52 .

The support member 50 is made of a resin material and fused or bonded to the edge of the filter member 52 to be integrally formed.

The filter member 52 is formed of a porous nano-web 53 as shown in Fig. 8, and the porous nano-web 53 is formed by mixing an electrospun polymer material and a solvent at a certain ratio to prepare a spinning solution, The use solution is spun by the electrospinning method to produce the nanofibers 54, and the nanofibers 54 are accumulated so as to have the micropores 56.

The polymeric material used in the present invention may be electrospun. For example, synthetic and natural polymers may be used. One or more of these polymers may be used in combination.

Among the polymer materials, particularly preferred as the filter material of the present invention are polyacrylonitrile (PAN), polyvinylidene fluoride (PVdF), polyester sulfone (PES), polystyrene (PS), polyvinyl chloride Polyvinylchloride), polycarbonate (PC), polyurethane (PU), polyurethane (PU), polyvinylidene fluoride (PVdF) and polyacrylonitrile PES, PVdF and thermoplastic polyurethane (TPU), PVC, PC, etc. can be mixed and used.

As the spinning method applied to the present invention, there can be used a nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type nozzle type Can be used.

Since the porous nano-web 53 is manufactured by the electrospinning method, the thickness is determined according to the amount of radiation of the polymer material. Therefore, there is an advantage in that it is easy to make the thickness of the porous nano-web 53 to a desired thickness.

Therefore, since the average size of the pores and pores is determined according to the thickness of the porous nano-web 53, a pore average size suitable for filtering fine dusts of PM 2.5 or less can be manufactured.

The diameter of the nanofibers 54 is in the range of 0.5 to 3 mu m, and the average pore size is preferably 0.2 to 10 mu m or less.

Since the filter unit 34 according to the present embodiment is installed in a state exposed to the outside, the porous nano web 53 basically has a pore size that can not allow rainwater to pass through. A water repellent coating layer is formed on the surface of the porous nano web 53 to prevent rain water from penetrating into the porous nano web.

9, since the porous nano web 53 is exposed to the outside as shown in Fig. 9, the strength reinforcing layer 58 may be laminated to prevent scratches or the like from being generated on the surface of the porous nano web 53. [

The strength reinforcing layer 58 is mixed with a pigment, a binder and a solvent at a predetermined ratio and is applied to the surface of the porous nano-web 52. The pigment used for the strength reinforcing layer 58 may be black or a color pigment. Various colors and tones may be realized depending on the amount and type of pigment used.

The method of applying the strength reinforcing layer 58 may be gravure printing, coating, or the like, and it may be formed by electrospinning as well as the method of making the porous nano web 52.

The strength reinforcing layer 58 includes a binder that strengthens the strength of the porous nano-web 52, thereby enhancing the surface strength of the porous nano-web 52 and providing scratch resistance.

That is, since the porous nano-web 52 is manufactured by the electrospinning method and the nanofibers 54 are accumulated, pores 56 are formed between the nanofibers, and the strength-reinforcing layer 58 is formed of the nanofibers 54 And the porous nano web 53 is applied to the points where the porous nano webs 53 meet. Therefore, it is possible to minimize the deformation of the porous nano-web 53 against the external impact or sound pressure.

As shown in Fig. 10, the filter member according to the second embodiment includes a porous substrate 92 having a plurality of pores, a porous substrate 92 having a plurality of pores formed by the electrospinning method, And a nano web 94.

The porous nano web 94 is the same as the porous nano web 53 described in the embodiment.

The porous substrate 92 may be a thermal bond nonwoven fabric, a spunbond nonwoven fabric, a chemical bond nonwoven fabric, an airlaid nonwoven fabric, or a mixture thereof. In addition to the nonwoven fabric, the porous substrate may be formed of a fabric having pores, styrofoam, paper, a mesh, or the like.

The porous substrate and the porous nano-web may be fused by heat and may be bonded to each other by forming a double-sided adhesive tape on the edge of the porous substrate.

At this time, the thickness of the porous nano web 94 is 1 to 5 μm and the air permeability is 10 to 20 CFM.

When the porous substrate 92 and the porous nano web 94 are laminated, the total thickness may vary depending on the thickness of the porous substrate.

11, the filter member according to the third embodiment includes a porous substrate 92 having a plurality of pores, a plurality of pores formed on one surface of the porous substrate 92 and formed by the electrospinning method, And a second porous nano web 96 laminated on the other side of the porous substrate and formed by an electrospinning method.

The filter member according to the third embodiment has an air permeability of 7 to 15 CFM, and porous nano-webs are laminated on both surfaces of the porous substrate 92 to reduce the air permeability, but the filtering performance can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

10: housing 14: indoor side housing
16: outdoor side housing 18: air inlet
20: air supply port 34: filter unit
36: blower unit 50: support member
52: filter member 53: porous nano web

Claims (14)

A housing having an air inlet formed at a front surface thereof to receive outdoor air and formed with an air inlet for supplying air to the rear of the indoor unit;
An air blowing unit mounted on the housing for forcibly blowing air; And
And a filter unit mounted on the housing and formed of a porous nano-web to filter fine dust. The method according to claim 1,
The housing has a protective portion for protecting the filter unit exposed to the outside on the front side, a rear surface opened on the indoor side is formed in an open form, and a window type air purification system. The method according to claim 1,
Wherein the air blowing unit includes a motor fixed to the housing, a blade mounted on a driving shaft of the motor, and a guide member installed on a front surface of the blade to protect the blade and guide air into the room. The method according to claim 1,
And a cleaning unit installed inside the housing and periodically cleaning the filter. 5. The method of claim 4,
The cleaning unit may include an injection nozzle installed in the housing to inject air into the filter unit.
An air passage connected between the air blowing unit and the jetting nozzle to supply a jetting pressure generated by the air blowing unit to the jetting nozzle;
An open / close valve installed in the air passage for opening / closing the air passage; And
And a control unit for controlling the forward and backward rotation of the blowing unit and controlling the opening and closing valve. The method according to claim 1,
Wherein the filter unit comprises: a filter member having a plurality of pores formed by an electrospinning method; And
And a support member mounted on an edge of the filter member to support the filter member. The method according to claim 6,
Wherein the filter member is made by mixing an electrospun polymer material and a solvent at a certain ratio to prepare a spinning solution, spinning the spinning solution by electrospinning to make a nanofiber, and storing the nanofiber into a porous nano- The air-conditioning system comprising: 8. The method of claim 7,
Wherein the nanofiber has a diameter ranging from 0.5 to 3 mu m and an average pore size ranging from 0.2 to 10 mu m. 8. The method of claim 7,
Wherein a water-repellent coating layer is formed on the surface of the porous nano-web. 8. The method of claim 7,
And a strength reinforcing layer for reinforcing the strength of the porous nano-web is laminated on the surface of the porous nano-web. 11. The method of claim 10,
Wherein the strength reinforcing layer is a mixture of a pigment, a binder for strengthening strength, and a solvent at a predetermined ratio and is applied to the surface of the porous nano-web. 8. The method of claim 7,
Wherein the porous nano web has a thickness of 1 to 5 μm and an air permeability of 10 to 20 CFM. The method according to claim 6,
The filter member comprising: a porous substrate having a plurality of pores; And
And a porous nano-web laminated on one or both surfaces of the porous substrate and having a plurality of pores formed by an electrospinning method. 14. The method of claim 13,
Wherein the porous substrate is a thermal bond nonwoven fabric, a spunbond nonwoven fabric, a chemical bond nonwoven fabric, an airlaid nonwoven fabric, a fabric or mesh having pores, and a window type air purification system.

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