KR102425915B1 - Air purifier - Google Patents

Abstract

The present invention provides a body in which an inlet through which external air is introduced and an outlet through which purified air from which dust has been removed from the outside air is discharged, respectively, external air is introduced into the body through the inlet, and purified air is supplied through the outlet It includes a blower for discharging to the outside, a charging unit provided inside the main body to charge dust contained in the outside air, and a plurality of dust collecting plates arranged in series along the movement direction of the outside air, as the outside air moves. Provided is an air purifier including a dust collector for electrically collecting dust charged according to the present invention.

Description

air purifier {AIR PURIFIER}

The present invention relates to an air purification device.

Along with industrialization, soot emitted from factories, power plants and automobiles is a major factor polluting the air. In particular, since many cars are driving on the road, the air near the road is poor due to air pollution caused by automobile exhaust gas.

That is, on the road, together with exhaust gases such as carbon monoxide (CO), nitrogen oxides (NOx), hydrocarbons (HC), ozone (O3), carbon dioxide (CO2), sulfur dioxide (SOx), etc. Particulate matters (PM) such as tire dust are mixed and pollute the air environment of roads. In addition, as it spreads to residential areas near roads, it is seriously polluting the air in the atmosphere.

In addition, in the underground tunnel and underground platform of the subway, it is difficult to circulate air by natural ventilation, and fine dust remains in the underground space as it is, threatening the health of people using the subway.

In particular, when a subway stops at a station and the door is opened, fine dust rises again from the underground tunnel or track due to the train wind, increasing the concentration of fine dust in the platform.

In order to solve these problems, it is necessary to install an air purifier in the place.

Air purification devices that are currently widely used are largely classified into two types. One is a method using a filter, and the other is a method using a charged dust collecting plate.

The method of using a filter separates dust by allowing air to pass through a filter having numerous micropores and trapping dust in the air into the micropores of the filter.

However, in the method of using a filter, when the hole size of the filter is made very small in order to increase the efficiency of air purification, the pressure loss increases when air is sucked into the air purification device, so that the power consumption increases, and the contamination by dust Since the old filter has to be washed or replaced frequently, maintenance is cumbersome and not economical.

The method of using a charged dust collecting plate removes dust by charging dust in the air and then passing the air between the charged dust collecting plates so that the dust adheres to the dust collecting plate having opposite poles.

A conventional electrostatic precipitator includes a charging unit for charging dust by generating a corona discharge upon application of a high voltage, and a dust collecting plate for collecting the charged dust.

However, since the electrostatic precipitator uses the dust collecting plate parallel to the air movement direction, the contact area and contact time between the dust collecting plate and the air is reduced when the air moves. Accordingly, there is a problem in that the dust contained in the air does not stick to the dust collecting plate and passes as it is.

In addition, since the conventional electrostatic precipitator introduces air into the electrostatic precipitator at a constant rate and purifies it regardless of the degree of pollution of the air, there is a problem in that it cannot respond in real time to the degree of pollution of the air.

In addition, when the dust collected on the dust collecting plate is saturated, it is difficult to collect the dust anymore, so the dust collecting plate must be washed at regular intervals. There is a problem in that the dust collecting plate is damaged during the cleaning process.

Korean Patent Publication No. 10-2018-0015891

In order to solve the problems of the prior art as described above, an object of the present invention is to provide an air purifier capable of improving the dust collecting efficiency of the dust collecting plate by increasing the contact area and contact time between the dust collecting plate and the outside air.

Another object of the present invention is to provide an air purifier capable of facilitating cleaning of the dust collecting plate and preventing damage to the dust collecting plate during washing.

Another object of the present invention is to provide an air purifying device capable of purifying external air in response to a pollution degree of external air in real time.

In order to solve the above problems, the present invention provides a body in which an inlet through which external air is introduced and an outlet through which purified air from which dust is removed from the outside air is discharged, respectively, and external air is introduced into the body through the inlet and , a blower for discharging purified air to the outside of the body through the outlet, a charging unit provided inside the body to charge dust contained in the outside air, and a plurality of dust collecting plates arranged in series along the moving direction of the outside air. It provides an air purification device including a dust collector for electrically collecting dust charged as external air moves.

Here, the plurality of dust collecting plates may be arranged such that external air moves along the surfaces of the plurality of dust collecting plates.

In addition, the plurality of dust collecting plates may be disposed to be inclined at a certain angle with respect to the moving direction of the outside air.

In addition, the plurality of dust collecting plates may be arranged in a diagonal or zigzag form in the same direction.

In addition, the dust collecting unit, accommodating the plurality of dust collecting plates, and an accommodating portion having an open upper and lower portions, and a plurality of slots provided in the receiving portion, for mounting or detaching the plurality of dust collecting plates may be further included.

In addition, the plurality of dust collecting plates may be provided with a handle on one side.

In addition, the charging unit may be a carbon brush.

In addition, the air purification apparatus of the present invention may further include a sensor unit for measuring the degree of pollution of external air and a controller for controlling the angles of the plurality of dust collecting plates according to the degree of pollution.

In addition, the controller may control the rotation speed of the blower according to the degree of pollution.

In addition, the controller may increase the rotational speed of the blower and increase the angle of the plurality of dust collecting plates as the degree of contamination increases.

In addition, the present invention provides a body in which an inlet through which external air is introduced and an outlet through which purified air from which primary dust and secondary dust have been removed from the outside air are discharged, respectively, and external air is introduced into the body through the inlet, , a blower for discharging purified air to the outside of the body through the outlet, a charging unit provided inside the body to charge primary dust contained in the outside air, and a plurality of units arranged in series along the movement direction of the outside air. Provided is an air purification device including a dust collecting plate, a dust collecting unit electrically collecting primary dust as external air moves, and a photocatalytic filter adsorbing secondary dust contained in external air.

Here, the plurality of dust collecting plates are arranged such that external air moves along the surfaces of the plurality of dust collecting plates, and the photocatalytic filter is arranged so that external air from which primary dust is removed passes through the surface of the photocatalytic filter.

In addition, the air purifying device of the present invention further includes an ultraviolet irradiator for removing secondary dust adsorbed on the photocatalytic filter by irradiating ultraviolet rays toward the photocatalytic filter, and an ozone filter for adsorbing ozone generated in the charging process of primary dust. can do.

According to the present invention, a plurality of dust collecting plates are configured in series along the moving direction of the outside air, and the plurality of dust collecting plates are arranged to be inclined at a certain angle with respect to the moving direction of the outside air, so that the contact area and contact time between the dust collecting plate and the outside air is reduced. By increasing, the dust collecting efficiency of the dust collecting plate can be improved.

In addition, according to the present invention, since a plurality of relatively small dust collecting plates are provided and used, it is possible to easily clean the dust collecting plates, and it is possible to prevent damage to the dust collecting plates during washing.

Further, according to the present invention, it is possible to purify the outside air in response to the pollution level of the outside air in real time by controlling the inflow speed of the outside air and the angle of the dust collecting plate according to the degree of pollution of the outside air.

1 is a perspective view of an air purification apparatus according to an embodiment of the present invention.
2 is an exploded perspective view of an air purification apparatus according to an embodiment of the present invention.
3 is a longitudinal cross-sectional view of the air purification apparatus according to the embodiment of the present invention.
4 and 5 are internal configuration diagrams of an air purification apparatus according to an embodiment of the present invention.
6 is a view for explaining a process of mounting the dust collecting plate to the air purification apparatus according to an embodiment of the present invention.
7 is a schematic block diagram of an air purification apparatus according to an embodiment of the present invention.

In order to fully understand the configuration and effect of the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and may be embodied in various forms and various modifications may be made. However, the description of the present embodiment is provided so that the disclosure of the present invention is complete, and to fully inform those of ordinary skill in the art to which the present invention pertains the scope of the invention. In the accompanying drawings, components are enlarged in size than actual for convenience of description, and ratios of each component may be exaggerated or reduced.

Terms such as 'first' and 'second' may be used to describe various elements, but the elements should not be limited by the above terms. The above term may be used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a 'first component' may be referred to as a 'second component', and similarly, a 'second component' may also be referred to as a 'first component'. can Also, the singular expression includes the plural expression unless the context clearly dictates otherwise. Unless otherwise defined, terms used in the embodiments of the present invention may be interpreted as meanings commonly known to those of ordinary skill in the art.

1 is a perspective view of an air purification apparatus according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the air purification apparatus according to an embodiment of the present invention. 3 is a longitudinal cross-sectional view of the air purification apparatus according to the embodiment of the present invention, and FIGS. 4 and 5 are internal configuration diagrams of the air purification apparatus according to the embodiment of the present invention.

Hereinafter, an air purification apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5 .

The air purification apparatus 100 according to the embodiment of the present invention includes a main body 110 , a blower 120 , a charging unit 130 , a dust collecting unit 140 , a photocatalytic filter 180 , an ultraviolet irradiation unit 185 , and an ozone filter. 190 may be included.

The main body 110 may be composed of a first housing 111 , a second housing 112 coupled to an upper portion of the first housing 111 , and a third housing 113 coupled to an upper portion of the second housing 112 . However, the present invention is not limited thereto, and may be configured as a single housing.

The first housing 111 includes a blower 120, a charging unit 130 and a dust collecting unit 140 therein, and an inlet 111a through which external air is introduced is formed on one lower side. Here, the blowing unit 120 , the charging unit 130 , and the dust collecting unit 140 may be sequentially disposed from bottom to top.

The first housing 111 is provided with a plurality of wheels 101 at the lower portion, so that the air purification apparatus 100 can be easily transported.

The blower 120 introduces external air into the body 110 through the inlet 111a formed in the first housing 111 . At this time, the introduced external air is moved to the charging unit 130 and the dust collecting unit 140 along the blower pipe 121 connected to the blowing unit 120 .

Although not shown in the drawings, the blower 120 may include a blowing fan, a motor rotating the blowing fan, and an inverter supplying current to the motor. Here, the rotation speed of the blowing fan may be controlled by the controller 160 to be described later.

The charging unit 130 charges the dust contained in the external air introduced into the body 110 . Specifically, when a high voltage is applied to the charging unit 130 , the charging unit 130 generates a corona discharge, and through this corona discharge, the primary dust is charged so that the primary dust contained in the external air has electricity. can do it Here, the primary dust may be fine dust of several tens of micrometers.

The charging unit 130 is preferably a carbon brush. When the carbon brush is used as the charging unit 130 as described above, ozone generated in the process of charging the primary dust can be suppressed, and thus, air pollution caused by a large amount of ozone can be prevented.

The charging unit 130 may be provided inside the guide unit 131 . Here, the guide part 131 communicates with the blower pipe 121 and is opened up and down to guide the movement direction of the outside air.

The dust collecting unit 140 includes a plurality of dust collecting plates 141 arranged in series along the moving direction of the external air, and electrically collects the primary dust charged as the external air moves. Here, the plurality of dust collecting plates 141 may be charged with a polarity opposite to the polarity of the charged primary dust.

Specifically, when the external air moves from the charging unit 130 to the dust collecting unit 140 , the primary dust charged by the charging unit 130 is attached to the plurality of dust collecting plates 141 by electrical attraction, and accordingly , the primary dust is removed from the outside air.

On the other hand, when the primary dust collected on the dust collecting plate 141 is saturated, it is difficult to collect the dust anymore, so it is necessary to clean the dust collecting plate 141 at regular intervals. At this time, when one dust collecting plate 141 is manufactured and used in a relatively large size, it causes inconvenience during washing, and there is a high possibility that the dust collecting plate 141 is damaged in the washing process.

Since the air purifying apparatus 100 according to the embodiment of the present invention includes a plurality of relatively small dust collecting plates 141 , it is possible to easily clean the dust collecting plates 141 , and damage to the dust collecting plates 141 during cleaning. can prevent

The plurality of dust collecting plates 141 are disposed so that external air moves along the surfaces of the plurality of dust collecting plates 141 . Specifically, the plurality of dust collecting plates 141 are arranged so that one end faces each other in the longitudinal direction of the air purification device 100 (series arrangement), and the dust collecting plates 141 adjacent to each other in the width direction of the air purification device 100 are arranged. By spaced apart arrangement (parallel arrangement), the movement path of the outside air is formed.

On the other hand, when the plurality of dust collecting plates 141 arranged in series are arranged in a straight line, the moving directions of the plurality of dust collecting plates 141 and the outside air are parallel to each other, so that the contact area between the dust collecting plate 141 and the outside air when the outside air is moved and contact time becomes small. Accordingly, the primary dust contained in the external air does not stick to the dust collecting plate 141 , and the external air may pass through the dust collecting unit 140 as it is. In particular, such a problem becomes greater as the moving speed of the outside air increases.

However, in the air purification apparatus 100 according to the embodiment of the present invention, the plurality of dust collecting plates 141 are disposed in a shape inclined at a predetermined angle (θ) with respect to the moving direction of the external air, and the dust collecting plate 141 and the external air are disposed. By increasing the contact area and contact time of , the dust collecting efficiency of the dust collecting unit 140 may be improved. Here, the angle θ of the plurality of dust collecting plates 141 may be 10 degrees to 20 degrees, preferably 15 degrees.

Specifically, the plurality of dust collecting plates 141 arranged in series may be arranged in a zigzag shape (refer to FIG. 4 ) or an oblique shape in the same direction (refer to FIG. 5 ).

6 is a view for explaining a process of mounting the dust collecting plate to the air purification apparatus according to an embodiment of the present invention.

Referring to FIG. 6 , the dust collecting unit 140 may include a receiving unit 142 and a plurality of slots 143 . Here, the accommodating part 142 accommodates a plurality of dust collecting plates 141 . In addition, the accommodating part 142 is disposed in the center of the first housing 111 and the upper and lower portions are opened. In addition, the plurality of slots 143 are provided inside the receiving portion 142 to mount or detach the plurality of dust collecting plates 141 .

The plurality of dust collecting plates 141 may have a handle portion 141a on one side. Accordingly, the user can easily mount or detach the plurality of dust collecting plates 141 from the plurality of slots 143 by gripping the handle portion 141a.

The second housing 112 includes an ultraviolet irradiation unit 185 and an ozone filter 190 therein, and communicates with the first housing 111 through the ozone filter 190 . That is, external air inside the first housing 111 may pass through the ozone filter 190 and may be introduced into the second housing 112 .

As described above, in the air purification apparatus 100 according to the embodiment of the present invention, since a carbon brush is used as the charging unit 130, it is generated in the process of charging primary dust contained in external air. Ozone produced can be minimized, but trace amounts of ozone may be generated in some cases. The ozone filter 190 removes the ozone generated in this way from the outside air.

The ozone filter 190 is disposed between the first and second housings 111 and 112 so that external air can move from the first housing 111 to the second housing 112 . That is, the ozone filter 190 is located in the lower center of the second housing 112 to correspond to the upper portion of the receiving portion 142 of the dust collecting unit 140 .

The ultraviolet irradiation unit 185 is disposed around the lower portion of the second housing 112 where the ozone filter 190 is not disposed because the ozone filter 190 is disposed at the lower center of the second housing 112 . The ultraviolet irradiation unit 185 may include a plurality of ultraviolet lamps.

The third housing 113 has a photocatalytic filter 180 therein, and communicates with the second housing 112 through the photocatalytic filter 180 . That is, the external air inside the second housing 112 may pass through the photocatalytic filter 180 and may be introduced into the third housing 113 .

The photocatalyst filter 180 is coated with a photocatalyst on its surface to adsorb secondary dust when passing through external air. Here, the secondary dust may be volatile volatile organic compounds (VOCs) as precursors of ultrafine dust of several micrometers.

The photocatalyst may be titanium dioxide (TiO2). Titanium dioxide has high photoreactivity, is very abundant in resources, is inexpensive, and as a photocatalyst, it is safe in itself due to its excellent durability and abrasion resistance.

The ultraviolet irradiation unit 185 irradiates ultraviolet rays to the photocatalytic filter 180 to remove secondary dust adsorbed to the photocatalytic filter 180 . That is, the ultraviolet irradiation unit 185 directly irradiates ultraviolet rays to the photocatalytic filter 180 to generate a photoreaction and decomposes and removes secondary dust adsorbed on the photocatalytic filter 180 into carbon dioxide and water.

As described above, the photocatalytic filter 180 serves to filter secondary dust from the outside air, and the ultraviolet irradiation unit 185 removes the secondary dust adsorbed in the process. Accordingly, the photocatalytic filter 180 can be used semi-permanently without replacement.

The photocatalytic filter 180 is disposed at a position corresponding to the ultraviolet irradiation unit 185 in order to effectively remove the secondary dust adsorbed to the photocatalytic filter 180 .

As such, the photocatalytic filter 180 is disposed around the lower portion of the third housing 113 because it is disposed at a position corresponding to the ultraviolet irradiation unit 185 . For example, the photocatalytic filter 180 may be formed in a ring shape.

The third housing 113 has an outlet 113a for discharging purified air from which primary and secondary dust is removed from external air at at least one of an upper portion and one side thereof. That is, since the external air must pass through the photocatalytic filter 180 in order to remove secondary dust from the external air, the outlet 113a is formed at a position corresponding to the photocatalytic filter 180 .

7 is a schematic block diagram of an air purification apparatus according to an embodiment of the present invention.

Referring to FIG. 7 , the air purification apparatus according to an embodiment of the present invention may further include a sensor unit 150 , a control unit 160 , and a display unit 170 .

The sensor unit 150 is disposed inside the inlet 111a or the blower pipe 121 to measure the degree of contamination of the outside air, and is disposed inside the outlet 113a or the third housing 113 to measure the degree of purification of the purified air. can be measured

The display unit 170 may be provided on the outside of the main body 110 to display the degree of pollution of the external air and the degree of purification of the purified air measured by the sensor unit 150 , respectively.

The control unit 160 may control the rotation speed of the blower 120 according to the degree of pollution of the external air measured by the sensor unit 150 , and may control the angles of the plurality of dust collecting plates 141 .

Specifically, the controller 160 increases the rotational speed of the blowing fan as the degree of pollution of the external air increases, thereby increasing the speed of the external air flowing into the main body 110 to quickly purify the external air.

At the same time, the controller 160 may increase the angle θ of the plurality of dust collecting plates 141 . Accordingly, it is possible to effectively remove the primary dust from the outside air by increasing the area and time in which the outside air is in contact with the plurality of dust collecting plates 141 .

On the other hand, when the angle θ of the plurality of dust collecting plates 141 is relatively small despite the increase in the inflow speed of the external air, a large amount of outside air can pass through without contacting the plurality of dust collecting plates 141 as it is. Thereby, the primary dust cannot be effectively collected.

On the other hand, when the inflow speed of external air is relatively slow despite the increase in the angle θ of the plurality of dust collecting plates 141 , the plurality of dust collecting plates 141 interfere with the passage of the external air through the dust collecting unit 140 . As a result, the exhaust rate of the purified air is slowed down.

Therefore, the control unit 160 can purify the outside air in real time in response to the pollution level of the outside air by appropriately adjusting the rotation speed of the blower 120 and the angle of the plurality of dust collecting plates 141 according to the degree of pollution of the outside air. And it is possible to improve the purification degree and purification speed of the outside air.

In the detailed description of the present invention, although specific embodiments have been described, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention is not limited to the described embodiments, and should be defined by the following claims and their equivalents.

100: air filter
110: body
120: blower
130: Daejeon
140: dust collector
150: sensor unit
160: control unit

Claims (14)

a body having an inlet through which external air is introduced and an outlet through which purified air from which primary dust and secondary dust have been removed from the outside air is discharged;
a blower for introducing the outside air into the main body through the inlet and discharging the purified air to the outside of the main body through the outlet;
a charging unit provided inside the main body and configured to charge the primary dust contained in the outside air;
a dust collecting unit including a plurality of dust collecting plates arranged in series along a moving direction of the external air, and electrically collecting the primary dust charged as the external air moves;
an ozone filter for adsorbing ozone generated during the charging process of the primary dust;
an ultraviolet ray irradiator disposed around the ozone filter; and
and a photocatalytic filter disposed on the upper portion of the ultraviolet irradiation unit to correspond to the position of the ultraviolet irradiation unit and adsorbing the secondary dust contained in the outside air;
The plurality of dust collecting plates
Doedoe arranged to be inclined at a certain angle with respect to the movement direction of the outside air, the angle is changed according to the degree of pollution of the outside air,
The ozone filter
The external air from which the primary dust has been removed is disposed to pass through the surface of the ozone filter,
The photocatalytic filter is
It is arranged so that the external air passing through the ozone filter passes through the surface of the photocatalytic filter,
The outlet is
disposed above the photocatalytic filter corresponding to the position of the photocatalytic filter,
The ultraviolet irradiation unit
To remove the secondary dust adsorbed to the photocatalytic filter by irradiating ultraviolet rays toward the photocatalytic filter,
The ozone filter and the ultraviolet irradiation unit are disposed on the same plane
air purifier.
The method of claim 1,
The plurality of dust collecting plates
The outside air is arranged to move along the surfaces of the plurality of dust collecting plates.
air purifier.
delete The method of claim 1,
The plurality of dust collecting plates
arranged in a diagonal or zigzag form in the same direction
air purifier.
The method of claim 1,
The dust collector
a accommodating portion accommodating the plurality of dust collecting plates, the upper and lower portions of which are opened; and
It is provided inside the accommodating part, and further comprising a plurality of slots for mounting or detaching the plurality of dust collecting plates.
air purifier.
6. The method of claim 5,
The plurality of dust collecting plates
having a handle on one side
air purifier.
The method of claim 1,
The charging part is a carbon brush
air purifier.
The method of claim 1,
a sensor unit for measuring the degree of pollution of the outside air; and
A control unit for controlling the angles of the plurality of dust collecting plates according to the degree of contamination
An air filter further comprising a.
9. The method of claim 8,
the control unit
Controlling the rotation speed of the blower according to the degree of pollution
air purifier.
9. The method of claim 8,
the control unit
The higher the pollution degree, the higher the rotation speed of the blower and the higher the angle of the plurality of dust collecting plates.
air purifier.
delete delete delete delete

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