KR20230078067A - Air purifier - Google Patents

Abstract

The present invention is an air purifier that removes dust contained in external air and discharges it to the outside. It includes a plurality of first dust collecting plates arranged in series along the moving direction, and is provided in a first dust collecting module electrically collecting dust included in the charged external air by charging external air, and a second flow path, It includes a plurality of second dust collecting plates arranged in series along the moving direction of the outside air, and includes a second dust collecting module that electrically collects dust included in the charged outside air by charging the outside air, and includes a plurality of first and second dust collecting plates. 2 dust collecting plates are arranged so that outside air moves along the surfaces of the plurality of first and second dust collecting plates, and the air purifier is disposed inclined at a predetermined angle with respect to the moving direction of the outside air.

Description

Air Purifier {AIR PURIFIER}

The present invention relates to an air purifier.

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

That is, on the road, exhaust gases such as carbon monoxide (CO), nitrogen oxides (NOx), hydrocarbons (HC), ozone (O3), carbon dioxide (CO2), and sulfur dioxide (SOx) emitted from automobiles are generated during tire friction. Particulate matter (PM) such as tire dust is mixed and contaminates the atmospheric environment of the road. In addition, as it spreads to residential areas near roads, it seriously pollutes the air in the atmosphere.

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

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

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

Currently widely used air purifiers are largely classified into two types. One is a method using a filter and the other is a method using a charged dust collection plate.

A method of using a filter separates dust by allowing air to pass through a filter having numerous fine pores and trapping dust in the air through the fine pores of the filter.

However, in the method using a filter, when the hole size of the filter is made very small to increase the efficiency of air purification, pressure loss increases when air is sucked into the air purifier, resulting in increased power consumption and contamination by dust. Since the filter must be frequently washed or replaced, maintenance is cumbersome and uneconomical.

In the method using charged dust collectors, dust in the air is charged and then air is passed between the charged collector plates so that the dust adheres to the collector plates having opposite poles to remove dust.

A conventional electrostatic precipitator includes a charging unit that charges dust by receiving a high voltage and generating a corona discharge, and a dust collection plate that collects the charged dust.

However, since the electric dust collector uses the dust collecting plate disposed in parallel with the air moving direction, the contact area and contact time between the dust collecting plate and the air during air movement is reduced. Accordingly, there is a problem in that the dust contained in the air passes through without sticking to the dust collecting plate.

In addition, since the conventional electrostatic precipitator purifies air by introducing air into the electrostatic precipitator at a constant speed regardless of the air pollution level, there is a problem in that it cannot respond to the air pollution level in real time.

In addition, when the dust collected on the collecting plate is saturated, it is difficult to collect the dust anymore, so the dust collecting plate needs to be washed at regular intervals. However, since the conventional electric dust collector uses one dust collecting plate in a relatively large size, it is inconvenient during cleaning. In addition, there is a problem in that the dust collection plate is damaged during the washing 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 a dust collecting plate by increasing the contact area and contact time between the dust collecting plate and outside air.

Another object of the present invention is to provide an air purifier capable of improving dust collection efficiency by optimally designing the size of a dust collector.

In addition, an object of the present invention is to provide an air purifier capable of effectively purifying external air for each location by reflecting the case where the degree of contamination of one side and the other side of the main body is different.

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 the degree of contamination of external air in real time.

In order to solve the above problems, the present invention is an air purifier for removing dust contained in external air and discharging it to the outside, comprising: a main body including a first flow path and a second flow path through which external air passes; A first dust collecting module provided in the passage and including a plurality of first dust collecting plates arranged in series along the moving direction of the external air, electrically collecting dust contained in the charged external air by charging the external air; It is provided in the second flow path, includes a plurality of second dust collection plates arranged in series along the moving direction of the outside air, and includes a second dust collection module that electrically collects dust contained in the charged outside air by charging the outside air. And, the plurality of first and second dust collecting plates are arranged so that the outside air moves along the surfaces of the plurality of first and second dust collecting plates, and the air purifier is disposed inclined at an angle with respect to the moving direction of the outside air. do.

Here, the first dust collecting module includes a first blower that introduces outside air into the first passage and discharges purified air from which dust is removed from the outside air to the outside of the first passage, and an outside air introduced by the first blower. A first charging unit for charging dust included in the air may be further included.

In addition, the second dust collecting module includes a second blower for introducing outside air into the second passage and discharging purified air from which dust is removed from the outside air to the outside of the second passage, and A second charging unit for charging dust included in the external air may be further included.

Also, the plurality of first and second dust collection plates may be arranged in a diagonal or zigzag shape in the same direction.

In addition, the air purifier of the present invention measures the pollution level of external air, and a sensor unit for measuring the pollution level of one side and the other side with respect to the main body, respectively, and a plurality of first and second dust collecting plates according to the pollution level of one side and the other side. A control unit for independently controlling the angle may be further included.

Here, the control unit may independently control the rotation speed of the first and second blowers according to the degree of pollution on one side and the other side.

In addition, the control unit may increase the rotational speed of the blowing unit and increase the angles of the plurality of first and second dust collection plates as the degree of contamination increases.

Also, the first and second passages include outlets for discharging purified air from which dust is removed from external air, and the outlets may be exposed to the outside when the air purifier operates.

In addition, the air purifying device of the present invention may further include a filter adsorbing ozone generated in the process of charging dust and dust included in the external air that has passed through the first and second dust collection modules.

According to the present invention, by forming two flow passages inside the main body and providing dust collecting modules inside the two flow passages, the size of the dust collecting plate can be optimally designed to improve dust collection efficiency.

In addition, 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 disposed inclined at an angle with respect to the moving direction of the external air, so that the contact area and contact between the dust collecting plate and the outside air By increasing the time, the dust collection efficiency of the dust collection plate can be improved.

In addition, according to the present invention, by independently controlling the angles of the plurality of first and second dust collecting plates and the rotational speed of the plurality of first and second blower units, when the degree of contamination of one side and the other side of the main body is different, this is reflected to the outside The air can be effectively purified by location.

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 plate and prevent damage to the dust collecting plate during washing.

In addition, according to the present invention, by controlling the inflow speed of the external air and the angle of the dust collection plate according to the degree of contamination of the external air, it is possible to purify the external air in real time in response to the degree of contamination of the external air.

1 and 2 are internal configuration diagrams of an air purifier according to an embodiment of the present invention.
3 is a view for explaining a process of mounting a dust collecting plate to an air purifying device according to an embodiment of the present invention.
4 is a control block diagram of an air purifier according to an embodiment of the present invention.

In order to fully understand the configuration and effects 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 implemented in various forms and various changes may be made. However, the description of the present embodiment is provided to complete the disclosure of the present invention and to completely inform those skilled in the art of the scope of the invention to which the present invention belongs. In the accompanying drawings, the size of the components is enlarged from the actual size for convenience of description, and the ratio 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 terms may only be used for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a 'first element' may be named a 'second element', and similarly, a 'second element' may also be named a 'first element'. can Also, singular expressions include plural expressions unless the context clearly indicates otherwise. Terms used in the embodiments of the present invention may be interpreted as meanings commonly known to those skilled in the art unless otherwise defined.

1 and 2 are internal configuration diagrams of an air purifier according to an embodiment of the present invention.

Hereinafter, an air purifying device according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2 .

An air purifying device according to an embodiment of the present invention may include main bodies 111 , 112 , and 113 , and first and second dust collecting modules 100 and 200 .

The main bodies 111, 112, and 113 include 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. ), but is not limited thereto, and may be composed of one housing.

The first housing 111 may include a first flow path 10 and a second flow path 20 through which external air passes.

The first dust collecting module 100 is provided in the first flow path 10 and includes a plurality of first dust collecting plates 141 arranged in series along the moving direction of the outside air, and the outside air is charged to charge the outside. Dust contained in the air is electrically collected.

The second dust collecting module 200 is provided in the second flow path 20 and includes a plurality of second dust collecting plates 241 arranged in series along the moving direction of the outside air, and charges the outside air to charge the outside air. The dust contained in is electrically precipitated.

As described above, the air purifying device according to the embodiment of the present invention forms two flow passages 10 and 20 therein and includes dust collection modules 100 and 200 inside the two flow passages 10 and 20, respectively. Dust collection efficiency can be improved by optimally designing the size of the dust collecting plates 141 and 241 .

The first dust collecting module 100 includes a first blowing part 120, a first charging part 130 and a first dust collecting part 140, and a first part through which external air is introduced into one side of the lower part of the first housing 111. An inlet (111a) is formed. Here, the first blowing unit 120, the first charging unit 130, and the first dust collecting unit 140 may be sequentially arranged from bottom to top.

Since the first housing 111 is provided with a plurality of wheels 101 at the bottom, the air purifying device 100 can be easily transported.

The first blower 120 introduces outside air into the first flow path 10 through the first inlet 111a. At this time, the introduced outside air is moved to the first charging unit 130 and the first dust collecting unit 140 along the first blowing pipe 121 connected to the first blowing unit 120 . Also, the first blower 120 discharges purified air from which dust is removed from the outside air to the outside of the first flow path 10 .

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

The first charging unit 130 charges dust included in external air introduced into the first flow path 10 by the first blowing unit 120 . Specifically, when a high voltage is applied to the first charging unit 130, the first charging unit 130 generates a corona discharge, and through the corona discharge, primary dust included in the external air is electrically charged. It can electrify car dust. Here, the primary dust may be fine dust on the order of several tens of micrometers.

The first charging unit 130 is preferably a carbon brush. In this way, when a carbon brush is used as the first charging unit 130, ozone generated in the process of charging primary dust can be suppressed, and through this, air pollution caused by a large amount of ozone can be prevented.

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

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

Specifically, when external air moves from the first charging unit 130 to the first dust collecting unit 140, the primary dust charged by the first charging unit 130 is electrically attracted to the plurality of first dust collecting plates 141. ), and thus, primary dust is removed from the outside air.

Meanwhile, when the primary dust collected on the first dust collecting plate 141 is saturated, it is difficult to collect the dust any more, so the first dust collecting plate 141 needs to be washed at regular intervals. At this time, when one first dust collecting plate 141 is manufactured and used in a relatively large size, inconvenience is caused during washing, and there is a high possibility that the first dust collecting plate 141 is damaged during the washing process.

Since the air purifying device according to the embodiment of the present invention is provided with a plurality of relatively small first dust collecting plates 141, it is possible to easily clean the first dust collecting plate 141, and during washing, the first dust collecting plate 141 ) to prevent damage.

The plurality of first dust collecting plates 141 are disposed so that outside air moves along the surfaces of the plurality of first dust collecting plates 141 . Specifically, the plurality of first dust collecting plates 141 are arranged such that one ends face each other in the longitudinal direction of the air purifying device (arranged in series), and there is a space between the first dust collecting plates 141 adjacent to each other in the width direction of the air purifying device. By being arranged (parallel arrangement), a movement path of the outside air is formed.

On the other hand, when the plurality of first dust collecting plates 141 arranged in series are arranged in a straight line, the moving direction of the plurality of first dust collecting plates 141 and the outside air is parallel, and when the outside air moves, the first dust collecting plate 141 The contact area and contact time between the external air and the outside air are reduced. Accordingly, the primary dust included in the external air does not stick to the first dust collecting plate 141 and the external air can pass through the first dust collecting unit 140 as it is. In particular, such a problem becomes larger as the moving speed of the outside air increases.

However, the air purifying device according to the embodiment of the present invention arranges a plurality of first dust collecting plates 141 inclined at a certain angle θ with respect to the movement direction of external air, so that the first dust collecting plate 141 and the outside The dust collecting efficiency of the dust collecting unit 140 may be improved by increasing the air contact area and contact time. Here, the angle θ of the plurality of first dust collecting plates 141 may be 10 degrees to 20 degrees, preferably 15 degrees.

Specifically, the plurality of first dust collection plates 141 arranged in series may be arranged in a zigzag shape (see FIG. 1 ) or in an oblique shape in the same direction (see FIG. 2 ).

The second dust collecting module 200 includes a second blowing unit 220, a second charging unit 230, and a second dust collecting unit 240, and has a second dust collecting unit 240, and outside air flows into the other side of the lower part of the first housing 111. An inlet (111a) is formed. Here, the second blowing unit 220, the second charging unit 230, and the second dust collecting unit 240 may be sequentially arranged from bottom to top.

The second blower 220 introduces outside air into the second flow path 20 through the second inlet 211a. At this time, the introduced outside air is moved to the second charging unit 230 and the second dust collecting unit 240 along the second blowing pipe 221 connected to the second blowing unit 220 . Also, the second blower 220 discharges purified air from which dust is removed from the outside air to the outside of the second flow path 20 .

Although not shown in the drawings, the second blower 220 may include a blower fan, a motor for rotating the blower fan, and an inverter for supplying current to the motor. Here, the rotational speed of the blowing fan may be controlled by a control unit 160 to be described later.

The second charging unit 230 charges dust included in external air introduced into the second flow path 20 by the second blowing unit 120 . Specifically, when a high voltage is applied to the second charging unit 230, the second charging unit 230 generates a corona discharge, and through this corona discharge, primary dust included in the external air is electrically charged. It can electrify car dust. The second charging unit 230 is preferably a carbon brush.

The second charging unit 230 may be provided inside the second guide unit 231 . Here, the second guide part 231 communicates with the second blower pipe 121 and is opened vertically to guide the movement direction of external air.

The second dust collecting unit 240 includes a plurality of second dust collecting plates 241 arranged in series along the moving direction of the outside air, and electrically collects the charged primary dust as the outside air moves. Here, the plurality of second dust collection plates 241 may be charged with a polarity opposite to that of the charged primary dust.

Specifically, when external air moves from the second charging unit 230 to the second dust collecting unit 240, the primary dust charged by the second charging unit 230 is electrically attracted to the plurality of second dust collecting plates 241. ), and thus, primary dust is removed from the outside air.

Since the air purifying device according to the embodiment of the present invention is provided with a plurality of relatively small second dust collecting plates 241, it is possible to easily clean the second dust collecting plates 241, and during washing, the second dust collecting plates 241 ) to prevent damage.

The plurality of second dust collecting plates 241 are disposed so that outside air moves along the surface of the plurality of second dust collecting plates 241 . Specifically, the plurality of second dust collecting plates 241 are arranged so that one ends face each other in the length direction of the air purifying device (serial arrangement), and there is a space between the second dust collecting plates 241 adjacent to each other in the width direction of the air purifying device. By being arranged (parallel arrangement), a movement path of the outside air is formed.

The air purifying device according to an embodiment of the present invention arranges a plurality of second dust collecting plates 241 inclined at a certain angle θ with respect to the moving direction of the outside air, so that the second dust collecting plate 241 and the outside air are separated. The dust collection efficiency of the second dust collector 240 may be improved by increasing the contact area and contact time. Here, the angle θ of the plurality of second dust collecting plates 241 may be 10 degrees to 20 degrees, preferably 15 degrees.

Specifically, the plurality of second dust collection plates 241 arranged in series may be arranged in a zigzag shape (see FIG. 1 ) or in a diagonal shape in the same direction (see FIG. 2 ).

3 is a view for explaining a process of mounting a dust collecting plate to an air purifying device according to an embodiment of the present invention.

Hereinafter, a process of mounting the plurality of first dust collecting plates 141 to the air purifier will be described, but the plurality of second dust collecting plates 241 may also be mounted in the same manner as the first dust collecting plate 141 .

Referring to FIG. 3 , the first dust collection unit 140 may include an accommodating unit 142 and a plurality of slots 143 . Here, the accommodating part 142 accommodates the plurality of first dust collecting plates 141 . Also, the accommodating part 142 is disposed at the center of the first housing 111 and has an open top and bottom. Also, the plurality of slots 143 are provided inside the accommodating part 142 to mount or detach the plurality of first dust collecting plates 141 .

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

An air purifier according to an embodiment of the present invention includes a filter (180, 190) for adsorbing dust and ozone generated in the charging process of dust contained in external air that has passed through first and second dust collection modules (100, 200) can be provided. These filters 180 and 190 may include an ozone filter 190 and a photocatalyst filter 180, and these filters 180 and 190 may be integrally formed, but are not limited thereto.

Hereinafter, an example in which the ozone filter 190 and the photocatalyst filter 180 are separately formed will be described.

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 be introduced into the second housing 112 .

As described above, since the air purifier according to an embodiment of the present invention uses a carbon brush as the charging unit 130, ozone generated in the process of charging primary dust included in the external air is removed. Although it can be minimized, a small amount of ozone may be generated in some cases. The ozone filter 190 removes the ozone generated in this way from outside air.

The ozone filter 190 may be disposed between the first and second housings 111 and 112 to allow external air to move from the first housing 111 to the second housing 112 . That is, the ozone filter 190 may be located at the lower center of the second housing 112 corresponding to the upper portion of the accommodating portion 142 of the dust collecting portion 140 .

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

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

A photocatalyst is coated on the surface of the photocatalyst filter 180 to adsorb secondary dust when external air passes through. Here, the secondary dust may be volatile volatile organic compounds (VOCs) as precursors of ultra-fine dust with a size of several microns.

The photocatalyst may be titanium dioxide (TiO2). Titanium dioxide has high photoreactivity, is abundant in resources, is inexpensive, has excellent durability and abrasion resistance as a photocatalyst, is safe in itself, and is non-toxic, so it is environmentally friendly because it does not cause secondary pollution even when discarded.

The ultraviolet irradiator 185 irradiates the photocatalyst filter 180 with ultraviolet rays to remove secondary dust adsorbed on the photocatalyst filter 180 . That is, the ultraviolet irradiator 185 directly irradiates the photocatalyst filter 180 with ultraviolet rays to generate a photoreaction to decompose and remove the secondary dust adsorbed on the photocatalyst filter 180 into carbon dioxide and water.

As described above, the photocatalytic filter 180 serves to filter out secondary dust from the outside air, and the ultraviolet irradiator 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 to effectively remove secondary dust adsorbed on the photocatalytic filter 180 .

In this way, since the photocatalytic filter 180 is disposed at a position corresponding to the ultraviolet irradiation unit 185, it may be disposed around the lower portion of the third housing 113. For example, the photocatalytic filter 180 may have a ring shape.

At least one of the upper part and one side of the third housing 113 is formed with an outlet 113a for discharging purified air from which primary and secondary dust is removed from the external air. That is, since the external air must pass through the photocatalyst filter 180 to remove secondary dust from the external air, the outlet 113a is formed at a position corresponding to the photocatalyst filter 180 .

The outlet 113a may be accommodated inside the air purifier and exposed to the outside when the air purifier is operated by a user's input. Accordingly, the outlet 113a may be exposed to the outside while the air purifier stops operating, and external foreign substances may be prevented from entering the air purifier through the outlet 113a.

4 is a control block diagram of an air purifier according to an embodiment of the present invention.

Referring to FIG. 4 , the air purifying device 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 first and second inlets 111a and 211a or the first and second blowpipes 121 and 122 to measure the pollution level of the external air, but the main body 111, 112 and 113 The contamination level of one side and the other side may be respectively measured based on , and the degree of purification of purified air may be measured by being disposed inside the outlet 113a or the third housing 113 .

The display unit 170 is provided on the outside of the main body 110 to display the degree of contamination of the external air and the degree of purification of the purified air measured by the sensor unit 150 for each position.

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

In particular, the control unit 160 is characterized in independently controlling the angles of the plurality of first and second dust collecting plates 141 and 241 according to the degree of pollution on one side and the other side measured by the sensor unit 150.

In addition, the control unit 160 is characterized in independently controlling the rotation speed of the plurality of first and second blowers 120 and 220 according to the degree of pollution on one side and the other side measured by the sensor unit 150.

Specifically, the control unit 160 increases the rotational speed of the blowing fan provided in the first blowing unit 120 as the degree of contamination of the outside air on one side of the main body increases, thereby increasing the speed of the outside air flowing into the first flow path 10. can be increased to quickly purify the outside air.

At the same time, the controller 160 may increase the angle θ of the plurality of first dust collecting plates 141 . Accordingly, primary dust can be effectively removed from the external air by increasing the area and time for which external air is in contact with the plurality of first dust collection plates 141 .

In addition, the control unit 160 increases the rotational speed of the blowing fan provided in the second blowing unit 220 as the degree of contamination of the outside air on the other side of the main body increases, thereby increasing the speed of the outside air introduced into the second flow path 20. This can quickly purify the outside air.

At the same time, the controller 160 may increase the angle θ of the plurality of second dust collecting plates 241 . Accordingly, primary dust may be effectively removed from the external air by increasing the area and time for which external air is in contact with the plurality of second dust collection plates 241 .

As such, the air purifying device according to an embodiment of the present invention independently controls the angles of the first and second dust collecting plates 141 and 241 and the rotation speed of the plurality of first and second blowing units 120 and 220, thereby , when the degree of pollution on one side and the other side of the main body is different, it is possible to effectively purify the outside air for each location by reflecting this.

On the other hand, when the angle θ of the plurality of dust collecting plates 141 is relatively small even though the inflow speed of the outside air is increased, a large amount of outside air can pass through without contacting the plurality of dust collecting plates 141. and, accordingly, the primary dust cannot be effectively collected.

On the other hand, despite the increase in the angle θ of the plurality of first and second dust collecting plates 141 and 241, when the inflow speed of external air is relatively slow, the external air is supplied to the first and second dust collecting parts 140 and 240. When passing through the air, the plurality of first and second dust collection plates 141 and 241 act as an obstacle, and the discharge speed of purified air is slowed down.

Therefore, the control unit 160 appropriately adjusts the rotation speed of the first and second blowing units 120 and 220 and the angles of the plurality of first and second dust collecting plates 141 and 241 according to the degree of contamination of the outside air, It is possible to purify the outside air by responding to the degree of pollution of the air in real time, and improve the degree of purification and purification speed of the outside air.

In the detailed description of the present invention, specific embodiments have been described, but 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 equivalents thereof.

120, 220: first and second blowing units
130, 230: first and second charging units
141, 241: first and second dust collecting plate
150: sensor unit
160: control unit

Claims (9)

An air purifier that removes dust contained in external air and discharges it to the outside,
a main body including a first flow path and a second flow path through which the external air passes;
It is provided in the first flow path and includes a plurality of first dust collecting plates arranged in series along the moving direction of the external air, electrically collecting the dust contained in the charged external air by charging the external air a first dust collection module; and
It is provided in the second flow path and includes a plurality of second dust collecting plates arranged in series along the moving direction of the external air, electrically collecting dust included in the charged external air by charging the external air. 2 includes a dust collection module,
The plurality of first and second dust collecting plates
The outside air is disposed to move along the surfaces of the plurality of first and second dust collection plates, and is disposed inclined at a predetermined angle with respect to the moving direction of the outside air.
air filter.
According to claim 1,
The first dust collection module
a first blower configured to introduce the external air into the first passage and discharge purified air from which the dust is removed from the external air to the outside of the first passage; and
Further comprising a first charging unit for charging the dust included in the external air introduced by the first blowing unit
air filter.
According to claim 2,
The second dust collection module
a second blower configured to introduce the outside air into the second passage and discharge purified air from which the dust is removed from the outside air to the outside of the second passage; and
Further comprising a second charging unit for charging the dust included in the external air introduced by the second blowing unit
air filter.
According to claim 1,
The plurality of first and second dust collecting plates
Arranged in a diagonal or zigzag pattern in the same direction
air filter.
According to claim 3,
a sensor unit configured to measure pollution levels of the outside air and to measure pollution levels of one side and the other side with respect to the main body; and
A controller for independently controlling the angles of the plurality of first and second dust collecting plates according to the degree of contamination of one side and the other side.
An air filter further comprising a.
According to claim 5,
The control unit
Independently controlling the rotational speed of the first and second blowers according to the degree of contamination of the one side and the other side
air filter.
According to claim 5,
The control unit
As the degree of contamination increases, the rotational speed of the blowing unit increases and the angles of the plurality of first and second dust collecting plates increase.
air filter.
According to claim 1,
The first and second flow passages are
And a discharge port for discharging the purified air from which the dust is removed from the external air to the outside,
The outlet is exposed to the outside when the air purifier operates.
air filter.
According to claim 1,
A filter for adsorbing the dust contained in the external air that has passed through the first and second dust collection modules and ozone generated in the process of charging the dust.
An air filter further comprising a.

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