KR20230147807A - Air purification device with plants - Google Patents

Abstract

One embodiment of the present invention includes a wall portion having a hollow pillar shape on which plants are placed; a spray unit disposed in the hollow of the wall portion; a cover coupled to the top of the wall portion; an exhaust portion located at the bottom of the wall portion and discharging air to the outside; a connecting portion that connects the discharge portion and the wall portion and includes an inclined surface such that a horizontal cross-sectional area increases from the discharge portion to the wall portion; and a suction fan disposed at the top of the discharge unit, wherein the spray unit includes an electrostatic spray nozzle film that electrostatically sprays droplets having a sterilizing effect into the hollow.

Description

Air purification device with plants}

The present invention relates to an air purifying device, and more particularly to an air purifying device including plants.

Modern people spend a lot of time in limited indoor spaces. When living in an indoor space for a long time, if the indoor air is not ventilated regularly, symptoms such as headaches, dizziness, or tingling in the neck and eyes, so-called sick building syndrome, may appear. Building syndrome improves as soon as you breathe in clean air, but if you have a respiratory disease or chronic disease, it can be fatal. Accordingly, great efforts are being made to purify indoor air by removing indoor harmful substances such as indoor fine dust and odor.

An air purifier is a device that draws in outside air, filters out contaminants contained in the outside air, and then discharges them, but it cannot sterilize germs in the air. On the other hand, air purifiers can be distinguished from air purifiers in that they sterilize bacteria contained in the outdoor air. Air purifiers can sterilize air brought in from outside using ozone, ions, ultraviolet rays, and photocatalysts.

However, in order to increase the sterilization effect of the air, the sterilization of the air must continue for a certain period of time, so the air flow must be slow. The slower the air flow, the lower the filtering effect of removing dust in the air. Conversely, if the air flow is fast, the filtering effect increases, but the air sterilization effect decreases.

Embodiments of the present invention provide an air purification device that circulates air at high speed and has excellent sterilizing effect.

One embodiment of the present invention includes a wall portion having a hollow pillar shape on which plants are placed; a spray unit disposed in the hollow of the wall portion; a cover coupled to the top of the wall portion; an exhaust portion located at the bottom of the wall portion and discharging air to the outside; a connecting portion that connects the discharge portion and the wall portion and includes an inclined surface such that a horizontal cross-sectional area increases from the discharge portion to the wall portion; and a suction fan disposed at the top of the discharge unit, wherein the spray unit includes an electrostatic spray nozzle film that electrostatically sprays droplets having a sterilizing effect into the hollow.

In this embodiment, the spray mist includes a central body, and the electrostatic spray nozzle film may surround the outer peripheral surface of the body.

In this embodiment, ultrapure water to which a voltage is applied may be supplied to the electrostatic spray nozzle film.

In this embodiment, the width of the bottom of the discharge part may be larger than the width of the top.

In this embodiment, a light source that irradiates ultraviolet rays into the hollow may be disposed on the bottom of the cover.

In this embodiment, a water tank that accommodates the electrostatically sprayed droplets may be formed at the bottom of the connection part.

In this embodiment, the wall portion may include a plurality of units separably coupled to each other to form the hollow pillar shape.

In this embodiment, the wall portion includes a mesh-shaped metal layer, and the metal layer may be grounded.

According to embodiments of the present invention, the introduced air is sterilized by electrostatic spraying, so that an excellent sterilizing effect can be achieved even if the air circulates at a high speed.

In addition, since plants grow on the wall that acts as a filter, it can provide oxygen supply and purification functions through plants.

1 is a cross-sectional view schematically showing an example of an air purifying device according to an embodiment of the present invention.
Figure 2 is a perspective view schematically showing an example of the wall portion of Figure 1.
Figure 3 is a plan view schematically showing the spray unit of Figure 1.
Figure 4 is an enlarged plan view of portion A of Figure 3.
Figure 5 is a cross-sectional view schematically showing an example of cross-section II' of Figure 4.
Figure 6 is a cross-sectional view schematically showing another example of cross-section II' of Figure 4.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

In the following embodiments, terms such as first and second are used not in a limiting sense but for the purpose of distinguishing one component from another component.

In the following examples, singular terms include plural terms unless the context clearly dictates otherwise.

In the following embodiments, terms such as include or have mean that the features or components described in the specification exist, and do not exclude in advance the possibility of adding one or more other features or components.

In the following embodiments, when a part of a film, region, component, etc. is said to be on or on another part, it is not only the case where it is directly on top of the other part, but also when another film, region, component, etc. is interposed between them. Also includes cases where there are.

In the drawings, the sizes of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are shown arbitrarily for convenience of explanation, so the present invention is not necessarily limited to what is shown.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and when described with reference to the drawings, identical or corresponding components will be assigned the same reference numerals.

FIG. 1 is a cross-sectional view schematically showing an example of an air purifying device according to an embodiment of the present invention, and FIG. 2 is a perspective view schematically showing an example of the wall portion of FIG. 1.

Referring to FIGS. 1 and 2, the air purification device 10 according to an embodiment of the present invention includes a wall portion 100 having a hollow (V) pillar shape, and a wall portion (V) disposed in the hollow (V) of the wall portion (100). Spray unit 200, cover 300 coupled to the top of the wall unit 100, discharge unit 400 located at the bottom of the wall unit 100 and discharging purified air (air') to the outside, discharge unit 400 ) and a connection portion 500 connecting the wall portion 100.

The wall portion 100 includes a hollow space (V) inside. A spray unit 200 is disposed in the hollow V. The spray unit 200 can electrostatically spray fine droplets (M) having a sterilizing effect into the hollow (V).

The wall portion 100 may have a pillar shape. The pillar shape may be a triangular pillar, square pillar, cylinder or polygonal pillar. A plant (P) may be located on the wall portion 100.

The plant (P) may have its roots fixed to the wall portion (100). As an example, the wall portion 100 may include a metal layer having a mesh shape, and the roots of the plant P may be located between the meshes so that the position of the plant P may be fixed.

Additionally, the wall portion 100 further includes breathable soil, and the plant can anchor its roots to the soil. At this time, the soil may be contained in a cloth bag or the like to prevent it from flowing down into the hollow (V).

의 고온으로 소성하여 내부에 많은 기공이 형성된 다공질의 바이오 세라믹 담체로서, 물을 흡수하더라도 부스러짐과 부서짐이 없는바, 중공(V) 내로 파티클이 떨어져 중공(V)을 오염시키지 않을 수 있다. As another example, the wall portion 100 may include artificial soil. As an example, artificial soil may include purilite. Purilite uses about 1,000 zeolites.

It is a porous bioceramic carrier that is fired at a high temperature and has many pores formed inside, and does not crumble or break even if it absorbs water, so particles may not fall into the hollow (V) and contaminate the hollow (V).

External air passes through the wall portion 100 and flows into the hollow V. Meanwhile, the wall portion 100 includes a metal layer in the form of a mesh, and the roots of the plant (P) are located between the meshes, so in the process of air flowing into the hollow (V), the Foreign substances such as dust may be filtered by the wall portion 100. Additionally, the metal layer of the wall portion 100 may be in a grounded state. As a result, the roots of the plant (P) may also be in a grounded state. Therefore, when external air flows in, foreign substances contained in the air can be easily collected in the mesh-shaped metal layer and the roots of the plant.

In addition, when the wall portion 100 includes breathable soil, the external air flowing into the hollow V passes through the soil, so that pollutants contained in the air are environmentally friendly due to the soil. It can be filtered out.

Meanwhile, as shown in FIG. 2, the wall portion 100 may include a plurality of units 110, 120, 130, and 140 that are separably coupled to each other to form a hollow pillar shape. Figure 2 shows an example in which the first unit 110, the second unit 120, the third unit 130, and the fourth unit 140 are combined to form a cylindrical wall portion 100. The invention is not limited to this, and the number of units 110, 120, 130, and 140 and the shape of the wall portion 100 may vary.

The plurality of units 110, 120, 130, and 140 may be separably bonded to each other. Additionally, each of the units 110, 120, 130, and 140 includes a metal layer having a mesh shape. In this case, the metal layer of each unit 110, 120, 130, and 140 may be in a grounded state.

As will be described later, the droplets M sprayed from the spray unit 200 are charged. In addition, foreign substances such as fine particles introduced from the outside with air may be charged by the sprayed droplets M. Therefore, since the metal layer of each unit (110, 120, 130, and 140) is in a grounded state, foreign substances such as charged fine particles can be easily collected by the units (110, 120, 130, and 140). there is.

In addition, since the plurality of units 110, 120, 130, and 140 are separably bonded to each other, each of the plurality of units 110, 120, 130, and 140 can be separated, making it easy to clean and maintain. there is.

Plants (P) can be diverse, including herbs, foliage, native plants, succulents, and mosses. Such plants (P) are formed to cover the outer surface of the wall portion 100, thereby providing an ornamental function to the air purifying device 10 and supplying oxygen to the indoor space. In addition, the plant P can emit fragrance, negative ions, etc., purify the air, and supply moisture to the space where the air purification device 10 is placed.

Referring again to FIG. 1, the spray unit 200 disposed in the hollow V may electrostatically spray fine droplets M having a sterilizing effect into the hollow V. For this purpose, the spray unit 200 may include an electrostatic spray nozzle film. The electrostatic spray nozzle film will be described in detail later in Figure 3 and below.

In order for the spray unit 200 to uniformly spray the droplets M into the hollow V, the spray unit 200 may have a shape corresponding to the wall portion 100. For example, when the wall portion 100 is cylindrical, the spray portion 200 may also be cylindrical.

When water (H ₂ O) is electrostatically sprayed by the spray unit 200, the water (H ₂ O) is ionized into water fine droplets having highly reactive anions such as hydroxyl radical and superoxide radical. (M) is sprayed, and these anions are very reductive and can be reduced to water by taking away hydrogen cations from the cell membranes of microorganisms or viruses present in the air. Through this process, microorganisms and viruses present in the air introduced into the cavity (V) can be inactivated.

In addition, the liquid droplets (M) sprayed from the spray unit (200) quickly purify the air introduced into the hollow (V) and at the same time supply moisture to the plants (P) so that the plants (P) can grow. can do.

Meanwhile, the water supplied to the spray unit 200 may be ultrapure water. Ultrapure water is advantageous for electrostatic spraying because it has low electrical conductivity, and does not contain foreign substances or ions, so it can prevent problems such as clogging of the nozzle (112 in FIG. 3) of the electrostatic spray nozzle film.

Therefore, when constant water is supplied to the spray unit 200 through the pipe 20, etc., the constant water can be changed into ultrapure water through the purification/sterilization device 40. At this time, the pipe 20 is equipped with a pump 30 so that ultrapure water can be smoothly supplied to the spray unit 200.

Meanwhile, in order to electrostatically spray water, a voltage must be applied to the water, and an electrode for applying the voltage may be separately provided. As another example, voltage can be applied to the pipe 20 to apply the voltage to the water supplied to the spray unit 200 without a separate electrode.

The cover 300 can prevent external foreign substances from entering the air purification device 10. Additionally, a light source 310 capable of irradiating ultraviolet rays may be located on the lower surface of the cover 300. The light source 310 may be an LED, a fluorescent lamp, or the like. At this time, the cover 300 may have light blocking properties to prevent ultraviolet rays generated from the light source 310 from leaking out of the air purifying device 10 .

Meanwhile, the droplets M electrostatically sprayed by the spray unit 200 may contain anions such as hydroxyl radicals and hydrogen peroxide (H ₂ O ₂ ). The ultraviolet rays irradiated from the light source 310 may contain hydrogen peroxide ( H ₂ O ₂ ) can be decomposed to form hydroxyl radical. Therefore, the sterilization effect can be further improved by the droplet (M).

The air (air') purified by the droplets (M) can be discharged to the outside of the air purification device 10 through the discharge unit 400, and there is a discharge unit 400 between the discharge unit 400 and the wall 100. ) and a connection portion 500 connecting the wall portion 100 may be located.

The connection part 500 may include an inclined surface 510 whose horizontal cross-sectional area increases from the discharge part 400 to the wall part 100. As a result, water droplets formed by droplets can flow downward along the inclined surface 510, and a water tank 520 that accommodates the electrostatically sprayed droplets M can be formed at the bottom of the connection part 500.

As an example, the water tank 520 may have a concave shape in which the lower end of the connecting portion 500 is bent twice. As a result, water flowing along the slope 510 can be collected into the water tank 520.

The water tank 520 may be detachably coupled to the inclined surface 510. Therefore, the water filled in the water tank 520 can be easily discarded. Additionally, a sensor capable of detecting the water level may be placed in the water tank 520.

The width of the bottom of the discharge unit 400 may be larger than the width of the top. Accordingly, the air purification device 10 can be stably erected, and the flow rate increases at the narrow upper portion, so that the purified air (air') can easily move to the discharge unit 400.

The upper end of the discharge part 400 is coupled to the connection part 500. As an example, the top of the discharge unit 400 may be surrounded by the water tank 520.

A suction fan 410 may be located at the top of the discharge unit 400. The suction fan 410 can forcibly move the air (air') purified by the liquid droplets (M) within the hollow (V) to the outlet 400, thereby moving the air in the room where the air purification device 10 is placed. Air can circulate at high speed. On the other hand, since the air flowing into the cavity (V) can be quickly purified by fine droplets (M) having a sterilizing effect, the air purification device (10) according to the present invention has excellent air quality even if the air circulates at a high speed. It may have a sterilizing effect.

A plurality of holes through which purified air (air') can pass may be formed on the side of the discharge unit 400. Additionally, a filter may be further disposed on the inner surface of the discharge unit 400 to finally filter out fine dust contained in the purified air (air').

A guide unit 420 that can guide the flow of purified air (air') to the side of the discharge unit 400 may be further disposed within the discharge unit 400. The guide part 420 may have a shape corresponding to the discharge part 400. Additionally, the top of the guide portion 420 may have a horn shape. Therefore, the purified air (air') flowing into the discharge unit 400 moves to the side of the discharge unit 400 by the guide unit 420, and thereby the purified air (air') is discharged more easily. It can be.

This guide portion 420 may include heavy materials such as metal and ceramic materials. Accordingly, the discharge effect of the purified air (air') can be improved and the center of gravity of the air purifying device 10 can be lowered to prevent the air purifying device 10 from falling over.

The air purification device 10 may further include a pedestal 600 on which the discharge unit 400 is located. The stand 600 may include a plurality of wheels 610 so that the air purifying device 10 can be moved.

FIG. 3 is a plan view schematically showing the spray unit of FIG. 1, FIG. 4 is an enlarged plan view of part A of FIG. 3, FIG. 5 is a cross-sectional view schematically showing an example of the II′ cross-section of FIG. 4, and FIG. 6 is a cross-sectional view schematically showing another example of the II' cross-section of FIG. 4.

First, referring to FIG. 3, the spray unit 200 may include a central body 201 and an electrostatic spray nozzle film 202 surrounding the outer peripheral surface of the body 201.

The main body 201 may have a control unit that controls the operation of the air purification device (10 in FIG. 1). Additionally, the main body 201 may have a shape corresponding to the shape of the wall portion (100 in FIG. 1). For example, when the wall portion (100 in FIG. 1) is cylindrical, the main body 201 may also be cylindrical, and the electrostatic spray nozzle film 202 may surround the outer peripheral surface of the main body 201.

The electrostatic spray nozzle film 201 may include a first film 210, a second film 220, and a third film 230 that are sequentially stacked, and the first film 210 is a plurality of water spraying devices. of nozzles 212 may be provided. Figure 3 is a plan view showing the bottom of the electrostatic spray nozzle film 200.

Specifically, the first film 210 may include a first base layer 211 and a plurality of nozzles 212 protruding outward from the surface of the first base layer 211.

The first base layer 211 may be a transparent film. The first base layer 211 may be polyimide, acrylic, polycarbonate, polyethylene terephthalate, polyethylene, polypropylene, polysulfone, polymethyl methacrylate, triacetylcellulose, polydimethylsiloxane, etc.

As shown in FIG. 5, each of the plurality of nozzles 212 may have a shape whose width gradually narrows in the direction in which it protrudes from the surface of the first base layer 211. Each of the plurality of nozzles 212 may have a cone shape, such as a polygonal cone or truncated cone. Additionally, the first opening OP1 formed in the center of the nozzle 212 may have a constant width and extend to penetrate the first base layer 211.

As an example, the nozzle 212 may have a square cone shape. At this time, the length of the base of the square pyramid in contact with the surface of the first base layer 211 is 150 ㎛ or less in width and 150 ㎛ in length, and the height is 50 ㎛ or more, and the The diameter may be about 50㎛. In this way, as each of the nozzles 212 has a micro size and a cone shape, the electrostatic spraying start voltage can be reduced, and atomized droplets can be easily sprayed, enabling more stable spraying.

As shown in FIG. 3, the plurality of nozzles 212 may be arranged at regular intervals from each other. For example, the distance between the nozzles 212 may be 1 mm to 3 mm.

The second film 220 may include a plurality of nozzles 212 and a plurality of extraction electrodes 222 respectively corresponding to each other. Specifically, the second film 220 includes a second base layer 221, and a plurality of extraction electrodes 222 may be located on the second base layer 221.

The second base layer 221 may be a transparent film. The second base layer 221 may be polyimide, acrylic, polycarbonate, polyethylene terephthalate, polyethylene, polypropylene, polysulfone, polymethyl methacrylate, triacetylcellulose, polydimethylsiloxane, etc.

A plurality of extraction electrodes 222 may be inserted into and disposed on the surface of the second base layer 221. For example, the surface of the second base layer 221 and the surfaces of the plurality of extraction electrodes 222 may form the same surface, and the plurality of extraction electrodes 222 may be formed on the second base layer 221 and the first base layer ( 211), you can come into contact with them.

Meanwhile, as shown in FIG. 4, a plurality of extraction electrodes 222 are arranged to surround each of the plurality of nozzles 212 in a plan view. As an example, the extraction electrode 222 may have a circular or donut shape with a diameter of about 2 mm. The plurality of extraction electrodes 222 may be arranged to be spaced apart from each other, but may be electrically connected to each other through connection wires 224 and have the same potential.

The plurality of extraction electrodes 222 and the connection wiring 224 may be formed as one body. As an example, the plurality of extraction electrodes 222 and the connection wiring 224 are formed by forming a groove in the second base layer 221 to correspond to the position where the plurality of extraction electrodes 222 and the connection wiring 224 are to be formed. After forming, it can be formed by screen printing conductive paste in the groove. As another example, the plurality of extraction electrodes 222 and the connection wiring 224 may be formed in the groove formed in the second base layer 221 by a method such as deposition. At this time, a seed layer to facilitate deposition of the extraction electrodes 222 and the connection wires 224 may be formed in advance in the groove formed in the second base layer 221 by screen printing or the like.

Meanwhile, a constant voltage may be applied to the plurality of extraction electrodes 222 and the connection wiring 224. In this way, when voltage is applied to the plurality of extraction electrodes 222, as shown in FIG. 5, the electric field EF is concentrated around the end of the nozzle 212, allowing droplets to be sprayed more stably, Electrostatic spraying efficiency can be improved by reducing the electrostatic spraying start voltage. For example, in the case where there is no extraction electrode 222, the voltage applied to the water for electrostatic spraying is 9 kV, whereas in the case where a voltage of 5 V is applied to the extraction electrode 222, the voltage applied to the water for electrostatic spraying is It can be reduced to 1 to 2 kV.

Additionally, when voltage is applied to the plurality of extraction electrodes 222, heat is generated due to the resistance of the extraction electrodes 222, and the temperature of the water passing through the nozzle 212 may increase. When the temperature of the water increases, the evaporation rate of the droplets increases, which is advantageous for atomization, and the surface tension of the water decreases, thereby reducing the electrostatic spraying start voltage, thereby improving the spraying efficiency of the nozzle 212.

A third film 230 may be laminated on the second film 220. The third film 230 may include a third base layer 232 and a flow path FP formed in the third base layer 232.

The third base layer 232 may be a transparent film. The third base layer 232 may be polyimide, acrylic, polycarbonate, polyethylene terephthalate, polyethylene, polypropylene, polysulfone, polymethyl methacrylate, triacetylcellulose, polydimethylsiloxane, etc.

The flow path FP is a passage through which water (H ₂ O) for electrostatic spraying can flow, and may be a groove formed on the surface of the third base layer 232 facing the second film 220. As another example, the flow path may be formed inside the third base layer 232. This flow path FP may have a shape in which a plurality of nozzles 212 are connected, that is, a mesh pattern.

Water (H ₂ O) flowing through the flow path FP of the third film 230 is supplied to the nozzle 212, and can be sprayed by the nozzle 212 by applying a voltage for electrostatic spraying. To this end, the second film 220 may include a plurality of second openings OP2 connecting the plurality of nozzles 212 and the flow path FP at a position overlapping the plurality of nozzles 212. there is. At this time, the width of the second opening (OP2) is formed to be larger than the width of the first opening (OP1) formed in the center of the nozzle 212, thereby increasing the speed of water passing through the first opening (OP1). Additionally, the plurality of extraction electrodes 222 are positioned to surround each of the second openings OP2, so that water (H ₂ O) passing through the second opening OP2 can be heated.

Figure 6 is a cross-sectional view schematically showing another example of the cross-section taken along line II' of Figure 4.

FIG. 6 shows only the first film 210 for convenience of explanation. Referring to FIG. 6, a plurality of protrusions 214 may be further formed on the surface of the first base layer 211. A plurality of protrusions 214 are disposed around the nozzle 212.

The plurality of protrusions 214 are formed shorter than the nozzle 212. For example, the plurality of protrusions 214 may have a height of 20 μm or less. Additionally, the plurality of protrusions 214 may have hydrophobicity. These protrusions 214 can prevent droplets from forming on the nozzle 212 and improve the efficiency of electrostatic spraying.

As such, the present invention has been described with reference to an embodiment shown in the drawings, but this is merely an example, and those skilled in the art will understand that various modifications and variations of the embodiment are possible therefrom. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

Claims (8)

A wall portion having the shape of a hollow pillar on which plants are placed;
a spray unit disposed in the hollow of the wall portion;
a cover coupled to the top of the wall portion;
an exhaust portion located at the bottom of the wall portion and discharging air to the outside;
a connecting portion that connects the discharge portion and the wall portion and includes an inclined surface such that a horizontal cross-sectional area increases from the discharge portion to the wall portion; and
Including a suction fan disposed at the top of the discharge unit,
The spray unit is an air purifying device including an electrostatic spray nozzle film that electrostatically sprays droplets having a sterilizing effect into the hollow. According to paragraph 1,
The spray arm includes a central body,
The electrostatic spray nozzle film is an air purification device that surrounds the outer peripheral surface of the body. According to paragraph 1 above,
An air purification device in which ultrapure water to which a voltage is applied is supplied to the electrostatic spray nozzle film. According to paragraph 1,
An air purifying device in which the discharge portion has a lower width greater than an upper width. According to paragraph 1,
An air purifying device in which a light source that irradiates ultraviolet rays into the hollow is disposed on the underside of the cover. According to paragraph 1 above,
An air purification device in which a water tank is formed at the bottom of the connection portion to accommodate the electrostatically sprayed droplets. According to paragraph 1,
The wall portion is an air purifying device including a plurality of units separably coupled to each other to form the hollow pillar shape. According to paragraph 1,
The wall portion includes a mesh-shaped metal layer,
An air purification device wherein the metal layer is grounded.

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