KR102063071B1 - Apparatus for cleaning air using microbubble - Google Patents

Abstract

According to the present invention, an air purifier using microbubbles comprises: a polluted air suction unit configured to suck polluted air including fine dust from the outside; a microbubble generation unit having a surface on which a plurality of microbubbles are formed, and enabling the sucked polluted air to pass through a plurality of microholes to generate the microbubbbles; a solution storage unit receiving the microbubbles from the microbubble generation unit, and storing a solution in which the fine dust included in the microbubbles is adsorbed; and a purified air collection unit collecting the purified air to discharge the same to the outside when the microbubbles in which the fine dust is removed by being adsorbed onto the solution is defoamed from the solution to the purified air.

Description

Apparatus for cleaning air using microbubble}

The present invention relates to an air purifying apparatus using microbubbles, and more particularly, when the fine dust contained in the microbubbles is adsorbed to the solution, and the microbubbles are degassed from the solution, the microbubbles are collected and discharged to the outside. It is related with the used air purification apparatus.

Generally, the air purifier that removes fine dust, various harmful gases, germs, molds, viruses, etc., and discharges clean air, removes air odor, cleansing odor, removes small particles such as mites, pollen, and pet hair, and infects air. Various functions such as disease prevention will be equipped.

Representative methods of air purifiers can be divided into electrostatic precipitating and filter filtration.

Here, the filter filtration formula is a method of purifying air by using a filter having a fine structure such that small particles pass through small particles, and large particles of foreign matter are filtered. .

In addition, the electrostatic precipitating method is a method of purifying air using an electrostatic precipitating plate in which static electricity is generated so that foreign matters contained in the air are attached, so there is no need to replace the filter because there is no filter. There was a disadvantage that the capacity is reduced and the ability to remove dust.

On the other hand, recently, a wet type air cleaner which performs air cleaning using water has been developed. Such a conventional wet-type air purifier completely removes foreign substances contained in external air due to a phenomenon in which the purification power decreases rapidly due to foreign substances contained in the water when the foreign substances contained in the external air are purified once passed through the injected water. There was a problem that could not be cleaned.

Korean Patent Registration No. 10-1551328

According to the present invention, when contaminated air is generated into fine air and supplied to a solution, and the fine bubbles adsorbed to the solution are degassed into the purified air from the solution, the contaminated air is collected and discharged to the outside. An object of the present invention is to provide an air purifying apparatus using fine bubbles that can be purified.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention, which are not mentioned above, can be understood by the following description, and more clearly by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

Air purifying device using a micro-bubble according to the present invention for solving the technical problem is a polluted air suction unit for sucking the polluted air containing the fine dust from the outside; A microbubble generating unit having a plurality of micropores formed on a surface thereof and generating microbubbles by passing the sucked contaminated air through the plurality of micropores; A solution storage unit receiving the micro bubbles from the micro bubble generating unit and storing a solution in which the fine dust contained in the micro bubbles is adsorbed; And a purge air collecting unit configured to collect the purge air and discharge the purge air to the outside when the micro bubble removed by the fine dust adsorbed to the solution is degassed into the purge air from the solution.

Preferably, the solution reservoir may further include a guide member inclined at a predetermined angle with respect to a horizontal axis of the solution reservoir to control the floating path of the microbubbles in the solution.

Preferably, the solution storage unit may further include a guide member rotating unit for rotating the guide member so that the micro-bubble stayed on one side of the guide member without floating along the floating path.

The apparatus for purifying air using the microbubbles may further include a solution flow unit for flowing the solution supplied with the microbubbles in the solution reservoir in response to the floating path controlled by the guide member.

The air purifying apparatus using the microbubbles is provided for each of the plurality of heating regions set by dividing the solution reservoir, and is provided for each of the plurality of heating regions based on a distance between the upper end of the solution reservoir and the plurality of heating regions. It may further include a solution temperature control unit for adjusting the temperature of the stored solution.

Preferably, the solution temperature control unit may adjust the temperature of the solution stored in each of the plurality of heating zones so that the temperature of the solution is lower as the separation distance is longer.

According to the present invention, the contaminated air is produced by supplying fine air to the solution, and when the fine bubbles contained therein are degassed from the solution, the air bubbles are collected and discharged to the outside, thereby purifying the air purification ability. By keeping it at a maximum, the contaminated air can be purged with purified air.

1 is a perspective view of an air purification apparatus using microbubbles according to an embodiment of the present invention.
2 is an exploded perspective view of an air purification apparatus using microbubbles according to another embodiment of the present invention.
3 is an exploded perspective view of an air purification apparatus using microbubbles according to an embodiment of the present invention.
4 is a cross-sectional view of an air purification apparatus using microbubbles according to an embodiment of the present invention.
5 is a view showing the micro-bubbles generated by the air purification apparatus using a micro-bubble according to an embodiment of the present invention.
6 is an enlarged cross-sectional view illustrating an enlarged guide member and a guide member rotating part of FIG. 4.
FIG. 7 is an enlarged cross-sectional view illustrating the solution reservoir and the solution temperature controller of FIG. 4.
8 is a cross-sectional view of an air purification apparatus using microbubbles according to another embodiment of the present invention.

Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. However, this is not intended to limit the invention to the particular embodiments, it should be understood to include various modifications, equivalents, and / or alternatives of the embodiments of the present invention. In connection with the description of the drawings, similar reference numerals may be used for similar components.

In this document, expressions such as "have", "may have", "include", or "may contain" include the presence of a corresponding feature (e.g., numerical, functional, operational, or component such as a component). Does not exclude the presence of additional features.

In this document, expressions such as "A or B", "at least one of A or / and B", or "one or more of A or / and B" may include all possible combinations of items listed together. . For example, "A or B", "at least one of A and B", or "at least one of A or B" includes (1) at least one A, (2) at least one B, Or (3) both of cases including at least one A and at least one B.

Expressions such as "first," "second," "first," or "second," as used herein, may modify various components in any order and / or importance, and may define a component. It is used to distinguish it from other components and does not limit the components. For example, the first user device and the second user device may represent different user devices regardless of the order or importance. For example, without departing from the scope of rights described in this document, the first component may be called a second component, and similarly, the second component may be renamed to the first component.

One component (such as a first component) is "(functionally or communicatively) coupled with / to" to another component (such as a second component) or " When referred to as "connected to", it should be understood that any component may be directly connected to the other component or may be connected through another component (eg, a third component). On the other hand, when a component (e.g., a first component) is said to be "directly connected" or "directly connected" to another component (e.g., a second component), the component and the It may be understood that no other component (eg, a third component) exists between the other components.

The expression "configured to" used in this document is, for example, "suitable for", "having the capacity to ), "Designed to", "adapted to", "made to", or "capable of" . The term "configured to" may not necessarily mean only "specifically designed to" in hardware. Instead, the expression "device configured to" in some situations may mean that the device "can" with other devices or components. For example, the phrase “controller configured (or set up) to perform A, B, and C” may be executed by executing a dedicated processor (eg, an embedded processor) or one or more software programs stored in memory to perform the operation. It may mean a general-purpose processor (eg, a CPU or an application processor) capable of performing corresponding operations.

The terminology used herein is for the purpose of describing particular embodiments only and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly indicates otherwise. The terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art. Among the terms used in this document, the terms defined in the general dictionary may be interpreted as having the same or similar meaning as the meaning in the context of the related art, and unless it is clearly defined in this document, in an ideal or excessively formal meaning. Not interpreted. In some cases, even if terms are defined in the specification, they may not be interpreted to exclude embodiments of the present disclosure.

1 is a perspective view of an air purification apparatus 100 using microbubbles according to an embodiment of the present invention, Figure 3 is an exploded perspective view of the air purification apparatus 100 using a microbubble according to an embodiment of the present invention. 4 is a cross-sectional view of an air purification apparatus 100 using microbubbles according to an embodiment of the present invention.

1, 3 and 4, the air purification apparatus using a micro-bubble according to an embodiment of the present invention (hereinafter referred to as "air purification apparatus," 100) is a low housing 101, the upper housing ( 102, contaminated air intake unit 103, microbubble generating unit 104, solution storage unit 105, guide member 106, guide member rotating unit 107, solution flow unit 108, solution temperature control unit 109 and the purge air collecting unit 110.

The row housing 101 may be formed in a cylindrical shape to receive a configuration disposed below the air purification apparatus 100 therein. Specifically, the row housing 101 may accommodate the contaminated air intake unit 103 therein.

Meanwhile, the row housing 101 may include a plurality of suction ports 101a communicating with the suction pipe 103a of the polluted air suction part 103 such that the polluted air flowing from the outside is sucked into the polluted air suction part 103. have.

Here, the polluted air may be air of the atmosphere including fine dust made naturally or artificially.

The row housing 101 may further include a support plate 101b at an upper portion of the row housing 101 to support a lower portion of the solution storage unit 105 accommodated in the upper housing 102.

When the contaminated air sucked into the contaminated air intake unit 103 is supplied to the solution storage unit 105, the support plate 101b penetrates the outlet 103d of the contaminated air intake unit 103 through which the contaminated air flows. Through holes 101c may be formed.

The upper housing 102 may be formed in a cylindrical shape having an upper portion and a lower portion open to accommodate a configuration disposed above the air purification apparatus 100. In detail, the upper housing 102 includes a micro bubble generator 104, a solution reservoir 105, a guide member 106, a guide member rotating part 107, a solution flow part 108, and a solution temperature adjusting part 109. ) And the purified air collecting unit 110 may be accommodated therein.

The upper housing 102 may be supported by the lower portion of the upper housing 102 in contact with the upper portion of the row housing 101, and may be coupled to the upper portion of the upper housing 102 by the purifying air collecting portion 110.

On the other hand, the upper housing 102 is formed in a cylindrical shape with the same diameter from the lower end to the height corresponding to the upper end of the solution reservoir 105 stored therein, the height corresponding to the upper end of the solution reservoir 105 From can be formed in the shape of the pinch becomes shorter toward the upper diameter.

Accordingly, the purified air degassed at the upper portion of the solution storage unit 105 may be easily collected by the purified air collecting unit 110 and discharged to the outside.

The polluted air suction unit 103 may suck the polluted air flowing from the outside into the air purification apparatus 100. To this end, the contaminated air suction unit 103 may include a suction pipe 103a, a suction motor 103b, an inlet 103c, and an outlet 103d.

One side of the suction pipe 103a may communicate with the plurality of suction ports 101a of the row housing 101, and the other side thereof may communicate with the inlet 103c. One side and the other side of the inlet 103c communicates with the suction tube 103a and the suction motor 103b, respectively, and the outlet 103d has one side and the other side communicated with the suction motor 103b and the microbubble generating unit 104, respectively. Can be.

The outlet 103d may be disposed to penetrate the through hole 101c and the lower portion of the solution reservoir 105 toward the inside of the solution reservoir 105 in the row housing 101.

The suction motor 103b is driven to move the air from the inlet 103c to the outlet 103d, thereby sucking the polluted air flowing from the outside through the suction pipe 103a and the inlet 103c, and the sucked polluted air outlet. It may be supplied to the microbubble generating unit 104 via 103d.

The microbubble generating unit 104 has a plurality of micropores 104a formed on a surface thereof, is disposed in the solution storage unit 105, and passes the suctioned contaminated air through the plurality of micropores 104a to form microbubbles. Can be generated. That is, the contaminated air flowing from the outlet 103d to the microbubble generating unit 104 may be generated as microbubbles surrounded by the solution stored in the solution storage unit 105 while passing through the plurality of micropores 104a.

Here, it is noted that the diameter of the microbubbles may include fine dust therein, and is not limited as long as fine dust is adsorbed in the solvent. For example, the microbubbles may be bubbles having a diameter of 50 μm or less.

The microbubble generating unit 104 may be formed in a tubular shape having an empty inside, and a plurality of micropores 104a penetrating upward may be formed on an upper surface thereof. In addition, the microbubble generating unit 104 may be formed corresponding to the shape of the horizontal cross section of the solution storage unit 105 so that the microbubbles are uniformly supplied to the solution stored in the solution storage unit 105. In detail, the microbubble generating unit 104 may be formed in a circular shape corresponding to the horizontal cross section of the solution storage unit 105 having a circular cross-sectional shape.

Preferably, the microbubble generating unit 104 may be a nanotube.

5 is a view showing the micro-bubbles (B) generated by the air purification apparatus 100 in an embodiment of the present invention.

Referring to FIG. 5, the microbubble generating unit 104 generates the microbubbles B including the fine dust D and supplies them to the solution storage unit 105, and the microbubbles B are the solution storage unit. And may be supplied to flow 105 in solution.

At this time, the microbubble (B) is floated from the lower portion of the solution storage unit 105 by the buoyancy to the upper, while the floating force and the attraction force between the fine dust (D) contained in the microbubble (B) and the solution (D) may move to the outermost part of the microbubble (B).

Then, the fine dust (D) moved to the outermost of the micro-bubbles (B) can be adsorbed in the solution and separated from the micro-bubbles (B). The fine dust D separated from the microbubbles B may flow in the solution.

Finally, the fine bubbles (B) may be separated by adsorbed fine dust (D) contained in the solution, degassed into the purified air from the solution and discharged out of the solution. That is, the fine bubbles (B) may be discharged from the solution to the purified air from which the fine dust (D) is separated.

Referring back to FIGS. 1, 3, and 4, the solution storage unit 105 may receive the microbubbles generated from the microbubble generation unit 104 and store a solution in which fine dust is adsorbed.

The solution reservoir 105 may be formed in a cylindrical shape in which an upper portion is opened and a lower portion is formed with a hole through which the outlet 103d penetrates.

The solution reservoir 105 includes a part of the outlet 103d, the microbubble generating unit 104, the guide member 106, the guide member rotating unit 107, the solution flow unit 108 and the solution temperature adjusting unit 109 therein. ) May be arranged.

The solution stored in the solution reservoir 105 may be distilled water. Although the solution has been described as being distilled water in the above description, it is noted that the water is not limited as long as it can adsorb the fine dust contained in the microbubbles as water that does not contain contaminants.

The guide member 106 may be inclined at a predetermined angle with respect to the horizontal axis of the solution reservoir 105 to control the floating path of the microbubbles in the solution.

Specifically, the guide member 106 may be formed in a spiral of a shape wound around the guide shaft 106a a plurality of times.

Accordingly, the guide member 106 controls the floating path helically, not vertically, when the microbubbles rise from the bottom of the solution reservoir 105 to the upper portion, thereby allowing the microbubbles in the solution of the microbubbles to be more vertical than when the floating path is vertical. The flow time can be increased.

FIG. 6 is an enlarged cross-sectional view illustrating the guide member 106 and the guide member rotating part 107 of FIG. 4.

Referring to FIG. 6 further, the guide member rotating part 107 does not float along the floating path controlled by the guide member 106, and the microbubbles B stayed on one side of the guide member 106 follow the floating path. The guide member 106 can be rotated to float along.

Specifically, the guide member rotating part 107 rotates the guide shaft 105a when the microbubble B floating by the buoyancy stays on one side of the guide member 106 due to the attraction force with the guide member 106. By rotating to the guide member 106, the stayed microbubbles B can be floated along the floating path.

In one embodiment, the guide member rotator 107 may be a motor that rotates the guide shaft 105a.

Referring again to FIGS. 1, 3, and 4, the solution flow unit 108 may flow a solution supplied with microbubbles in the solution reservoir in response to the floating path controlled by the guide member 106. .

In detail, the solution flow unit 108 may flow the solution in a direction corresponding to the floating path so that the microbubbles supplied to the solution float along the floating path. For example, as shown in FIG. 4, the solution flow portion 108 has a solution around the guide shaft 105a such that the flow direction of the solution corresponds to the floating path controlled by the guide member 106 formed in a spiral shape. Can be flown.

In one embodiment, the solution flow 108 may be a screw.

Accordingly, the solution flow portion 108 may float the vertically floating microbubble with the solution to float along the floating path controlled by the guide member 106.

The above-described guide member 106, guide member rotating portion 107 and the solution flow portion 108 of the present invention is not a vertical vertical rise of the floating path to the microbubble that rises from the bottom of the solution reservoir 105 to the top By floating along, it is possible to lengthen the flow time for the microbubbles to flow in the solution.

Accordingly, by increasing the time that the fine dust contained in the microbubble can be adsorbed in the solution, a larger amount of fine dust can be separated from the microbubble.

FIG. 7 is an enlarged cross-sectional view illustrating the solution reservoir 105 and the solution temperature controller 109 of FIG. 4.

Referring to FIG. 7, the solution temperature controller 109 is provided for each of the plurality of heating regions R1,..., R3 set by dividing the solution reservoir 105, and the upper end and the plurality of heated regions of the solution reservoir. The temperature of the solution stored in each of the plurality of heating regions R1, ..., R3 can be adjusted based on the separation distance for each of (R1, ..., R3).

To this end, the solution temperature controller 109 may be disposed at one side of the solution reservoir 105, and may be disposed at the center of each of the plurality of heating regions R1,..., R3.

Here, the plurality of heating regions R1, ..., R3 may be divided into the same area.

The solution temperature controller 109 may adjust the temperature of the solution stored in the heating region as the distance between the upper end of the solution storage unit and the plurality of heating regions R1,..., R3 increases.

In detail, the solution temperature controller 109 may adjust the solution temperature of the solution stored in the heating region “R1” having the shortest separation distance among the plurality of heating regions R1,..., R3 to have the highest temperature. On the contrary, the solution temperature controller 109 may adjust the temperature of the solution stored in the heating region “R3” having the longest separation distance among the plurality of heating regions R1,..., R3 to have the lowest temperature.

Due to the configuration of the present invention, the heating zone in the upper portion containing a large amount of fine bubbles separated from the fine dust increases the temperature of the solution by degassing the fine bubbles to the purifying air at a high speed, to discharge the purified air quickly and a large amount You can.

Referring back to FIGS. 1, 3, and 4, the purifying air collecting unit 110 may collect the purifying air and discharge it to the outside when the microbubbles in which the fine dust is adsorbed in the solution are degassed into the purifying air from the solution. .

As described above, while the microbubbles are floated along the floating path in the solution by buoyancy, the fine dust contained therein may be adsorbed and separated from the solution. Finally, the microbubbles may be defoamed with purge air at the upper end of the solution reservoir 105, ie at the highest height of the solution.

At this time, the purifying air collecting unit 110 may generate vortices in the upper housing 102 to collect the purifying air and discharge it to the outside.

In one embodiment, the purge air collector 110 may be a fan.

8 is a cross-sectional view of an air purifying apparatus (hereinafter, referred to as an “air purifying apparatus”, 100 ′) using microbubbles according to another embodiment of the present invention.

Referring to FIG. 8, the air purifying apparatus 100 ′ according to another embodiment of the present invention further includes a solution filtration unit 101 ′ and a filtration control unit 102 ′ compared to the air purifying apparatus 100 according to an embodiment. It may include. Accordingly, repeated description will be omitted.

The solution filtration unit 101 ′ may be disposed in the solution storage unit 105, and may rotate in the solution storage unit 105 to filter fine dust adsorbed to the solution.

Specifically, the solution filtration unit 101 ′ may rotate fine particles, thereby filtering fine dust flowing in the solution. The solution filtration unit 101 ′ may include a filter 101 ′ a in which filter holes are formed.

Meanwhile, the solution filtration unit 101 ′ may be controlled to have a rotation speed based on the transparency of the solution. Specifically, the solution filtration unit 101 ′ may be controlled to increase the rotation speed as the transparency of the solution is lower.

The filtration control unit 102 'measures the transparency of the filter 101'a of the rotating solution filtration unit 101', and converts the transparency measured according to the rotational speed of the filter 101'a into a filter use degree. It may be calculated, and it may be determined whether to replace the filter 101'a based on the filter usage.

To this end, the filtration control unit 102 'may irradiate light to the filter 101'a through an optical sensor, and measure the amount of light scattered by the filter 101'a with transparency. Thereafter, the filtration control unit 102 ′ may calculate the degree of use of the filter by applying a conversion coefficient according to the rotation amount of the filter 101 ′ a to the transparency.

Here, the conversion coefficient may be a coefficient for converting the filter use degree by lowering the measured transparency as the rotational speed of the filter 101'a increases.

For example, the filtration control unit 102 'can measure the transparency indicating that the filter 101'a is more opaque as the rotation speed is higher, even though the amount of fine dust filtered through the filter 101'a is the same. have. In this case, the filtration control unit 102 ′ may calculate the filter utilization by applying a conversion coefficient for lowering the transparency to the transparency as the transparency measured from the filter 101 ′ a having a high rotation speed is increased.

In other words, even when the same transparency is measured, the filtration control unit 102 'may calculate the filter usage of the filter 101'a having a faster rotational speed than the filter usage of the filter 101'a having a slower rotational speed. have.

Thereafter, the filtration control unit 102 ′ may transmit the filter replacement request signal to the outside through communication when the filter usage exceeds the preset reference filter usage.

2 is an exploded perspective view of an air purifying apparatus (hereinafter, referred to as an "air purifying apparatus", 100 ") using microbubbles according to another exemplary embodiment of the present invention.

Referring to FIG. 2, the air purifying apparatus 100 ″ according to another exemplary embodiment of the present invention includes a guide member 106, a guide member rotating part 107, and a solution oil in comparison with the air purifying apparatus 100 according to an exemplary embodiment. It may not include only the eastern portion 108.

That is, in the air purifying apparatus 100 ″ according to another embodiment of the present invention, the microbubbles generated by the microbubble generating unit 104 are supplied to the solution storage unit 105, and the solution storage unit 105 is buoyant by buoyancy. In the lower portion of the) rises in a straight line from the top, and during the floating force is attracted between the fine dust and the solution contained in the microbubble, the fine dust may be adsorbed in the solution.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will understand that the present invention can be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the equivalent scope should be construed as being included in the present invention.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

100: air purification device using a fine bubble
101: low housing
102: upper housing
103: contaminated air suction
104: micro bubble generation unit
105: solution reservoir
106: guide member
107: guide member rotating portion
108: solution induction part
109: solution heating part
110: purifying air collecting unit

Claims (6)

Polluted air suction unit for sucking polluted air containing fine dust from the outside;
A microbubble generating unit having a plurality of micropores formed on a surface thereof and generating microbubbles by passing the suctioned contaminated air through the plurality of micropores;
A solution storage unit receiving the micro bubbles from the micro bubble generating unit and storing a solution in which the fine dust contained in the micro bubbles is adsorbed; And
A purge air collecting unit configured to collect the purge air and discharge the purge air to the outside when the micro bubble removed by the fine dust is absorbed by the solution into the purge air;
A solution storage unit storing the solution in which the fine dust is adsorbed;
A solution filtration unit having a filter in which a filtration hole is formed and arranged and rotated in the solution storage unit to filter fine dust adsorbed to the solution;
A filtration control unit for measuring transparency of the filter, calculating a filter usage degree by applying a conversion coefficient according to the rotational speed of the filter to the transparency, and determining whether to replace the filter based on the filter usage;
A solution temperature which is provided for each of the plurality of heating zones set by dividing the solution reservoir, and adjusts the temperature of the solution stored in each of the plurality of heating zones based on a distance between the upper end of the solution reservoir and the plurality of heating zones. It includes;
The solution temperature control unit
The temperature of the solution stored in each of the plurality of heating zones is adjusted to lower the temperature of the solution as the separation distance is longer
Air purification device using micro bubbles.
The method of claim 1,
And a guide member inclined at a predetermined angle with respect to a horizontal axis of the solution reservoir to control a floating path of the microbubbles in the solution.
Air purification device using micro bubbles.
The method of claim 2,
And a guide member rotating part for rotating the guide member so that the microbubble stayed on one side of the guide member without floating along the floating path.
Air purification device using micro bubbles.
Claim 4 has been abandoned upon payment of a set-up fee. The method of claim 2,
And a solution flow unit configured to flow the solution supplied with the microbubbles in the solution reservoir in response to the floating path controlled by the guide member.
Air purification device using micro bubbles.
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