KR20230029199A - Filter device of air purifier for fine dust - Google Patents

Abstract

The present invention relates to a filter device of an air purifier for fine dust, having a simple structure. The filter device utilizes an electrostatic atomization method to convert water into mist to adsorb and remove fine dust and suspended bacteria, while maintaining a particle size of the mist uniform by ensuring that the water pressure within each capillary tube is constant, which results in reduced water consumption and the ability to generate mist without additional structures. For this purpose, in the filter device of the air purifier for fine dust according to the present invention, which is configured to make fine dust and suspended bacteria in the air adhere to a grounding plate in a process in which water supplied to each capillary tube of a capillary tube frame is converted into mist through an electrostatic atomization method and then sprayed onto the grounding plate, the capillary tube frame is provided with capillary tube chambers, each having capillary tubes on both upper and lower sides based on a central passage. Each of the capillary tubes is provided with an annular perimeter wall and a linear guide wall separated from each other, allowing water to be guided to each capillary tube, wherein the guide wall is elongated from an end of the passage to the center thereof, such that the flow rate and velocity of water at the center and the end of the passage of each capillary tube chamber are inversely proportional, thereby maintaining a constant water pressure in each capillary tube.

Description

Filter device of air purifier for fine dust {Filter device of air purifier for fine dust}

The present invention relates to a filter device of an air purifier for fine dust, and more particularly, by making water into a mist state by an electrostatic spray method to adsorb and remove fine dust and airborne bacteria, but by making the water pressure in each capillary tube constant, the mist particle size is reduced. It relates to a filter device of an air purifier for fine dust that is uniform and minimizes water usage.

In general, most air purification systems using water spray water toward fine dust or allow fine dust to be adsorbed on the surface of water, and the removal efficiency of fine dust is high because fine dust in the air easily sticks to water. . In addition, a method of adsorbing and removing fine dust by spraying water into the inhaled air using an ultrasonic vibrator is also used.

Conventional Patent Publication No. 10-2009-0087560 consists of a main body having a humidifying unit, a dehumidifying unit, and an air cleaning unit, and sprays water into the room with an ultrasonic vibrator of the humidifying unit, and dehumidifies the indoor air with high humidity after flowing into the main body. It is a configuration in which fine dust in the indoor air is collected together in the process of removing moisture through condensation through the negative thermoelectric element.

However, since the conventional patent is a humidification method that sprays water directly into the room, it has the disadvantage of increasing the indoor humidity. There was the hassle of having to clean the floor at the same time.

Conventional Patent No. 2284715 proposed an air purifier using water electrostatic spray capable of removing fine dust in an eco-friendly way without frequent filter replacement by using an electrostatic spray method of spraying charged micro droplets.

However, the conventional patent has a complicated structure because it is necessary to additionally install an extraction plate to control the electrostatic spray for each nozzle in front of the microdroplet spraying unit and apply an independent voltage signal to each micronozzle to make the microdroplet more fine. In addition, there was a problem such as an increase in indoor humidity because fine droplets are discharged to the room when they do not stick to the electrode.

The present invention was developed in view of the problems of the prior art, and an object of the present invention is to adsorb and remove fine dust and airborne bacteria by making water into a mist state by electrostatic spraying, but to make the water pressure in each capillary tube constant so that the mist particle size can be reduced. By making it uniform, water usage is reduced and water can be made into a mist state without an additional structure, thereby providing a filter device of an air purifier for fine dust with a simple structure.

To this end, in the present invention, water supplied to each capillary of the capillary frame is made into a mist through an electrostatic spray method and then sprayed onto the ground plate so that fine dust and airborne bacteria in the air adhere to the ground plate. In the filter device of an air purifier for dust, the capillary frame is provided with capillary chambers having the capillaries on both upper and lower sides of the central passage; Each of the capillaries has an arc-shaped circumferential wall and a straight guide wall spaced apart from each other so that water is guided to each capillary, and each of the guide walls is formed longer from the end of the passage to the center so that the end and the center of the passage of each capillary chamber are formed longer. It is characterized in that the flow rate and the flow rate of the side are inversely proportional, so that the water pressure in each capillary tube is kept constant.

According to the present invention, the capillary frame is configured by separating capillary chambers having a plurality of capillaries on both upper and lower sides of the capillary frame with a central passage in between, and water flows along the passage in a state in which the ends of both sides of the passage are connected to each capillary chamber. After being dispersed, it is supplied to each capillary chamber. In addition, each capillary is surrounded by an arc-shaped circumferential wall and a vertical induction wall, and water is introduced into the gap between them. Each induction wall is formed longer as it moves away from the end of the passage so that water is equally supplied to each capillary.

Therefore, since the water pressure of each capillary becomes constant, the mist particle size becomes uniform and dense, thereby improving the collection performance of fine dust and airborne bacteria.

1 is a conceptual diagram of an air purifying device according to an embodiment of the present invention
Figure 2 is an exploded perspective view of a capillary frame for an air purifier according to an embodiment of the present invention
3 is a plan view of a capillary frame for an air purifier according to an embodiment of the present invention
Figure 4 is an enlarged view of the capillary frame of Figure 3

1 to 4, the air purifier of one embodiment of the present invention has a main body 10 having a “U”-shaped duct inside, and a suction fan 20 sucking external air at the beginning of the duct 11 It is provided to be rotated at high speed through this motor, and a suction port 12 connected to the suction fan 20 is provided at the lower part of the main body 10. In addition, a discharge port 13 connected to the end of the duct 11 is formed in the upper part of the main body 10, and a water collecting tank 14 connected to the lower part of the middle of the duct 11 through a hose is formed in the lower part of the main body 10. is provided

Inside the main body 10, a capillary frame 30 is provided at the beginning of the duct 11 to generate mist in an electrostatic spraying method. In the capillary frame 30, capillaries 32 are provided to face the inside of the duct 11, and a ground plate 40 is provided inside the duct 11 to face the capillaries 32. The capillary frame 30 has an open top and is sealed through a cover 35, and a capillary frame 30 has a plurality of capillaries 32 on both sides of the upper and lower sides with the passage 30a interposed therebetween. The tube chamber 31 is separated, and in a state where both ends of the passage 30a are connected to each capillary chamber 31, water is distributed to both sides along the passage 30a and then supplied to each capillary chamber 31. .

The cover 35 has an inlet 36 connected to the center of the passage 30a so that water in the water collecting tank 14 is sprayed into the passage 30a at high pressure through a pump 21 . In addition, each capillary tube 32 is surrounded by an arc-shaped circumferential wall 32 and a vertical induction wall 34, and the water in the capillary chamber 31 enters the gap between the circumferential wall 32 and the induction wall 34. this is introduced The guide wall 34 of each capillary chamber 31 is formed longer as it moves away from the end of the passage 30a, so that water is equally supplied to each capillary. Due to each guide wall 34 formed in each capillary chamber 31, the capillary chamber 31 becomes narrower as the passage 30a is farther from the end, so the flow rate and the flow velocity are in inverse proportion.

Therefore, since the flow rate and the flow rate of the capillary 32 that are far away from the capillary 32 at the end of the passage 30a are leveled while being inversely proportional, the water pressure of each capillary 32 becomes constant. In addition, since each capillary tube 32 is connected to each other through an auxiliary passage 30b, a differential pressure is not generated, and the water flowing into the gap between the circumferential wall 32 and the induction wall 34 and the water flowing in from the auxiliary passage 30b Since water passes through the capillary tube 32 rapidly while swirling while crossing each other, water stagnation does not occur.

The capillary frame 30 generates mist in an electrostatic manner. When DC high voltage from the power supply unit 22 is applied to the capillary frame 30 and the ground plate 40, water is sprayed into micro- and nano-sized mist. .

Electrostatic spraying is performed by setting a high voltage to be applied to the electrodes (capillary frame 30 and ground plate 40), setting the distance between both electrodes, and adjusting the water pressure inside the capillary 32. The above conditions are set by set values. When the water passes through the capillary tube 32, a Taylor cone is created at the discharge end of the capillary tube 32, and then the water particles are finely divided to enable electrostatic spray in the form of a Taylor jet.

When the inhaled air passes through the mist screen generated from the electrostatic spray cluster, fine dust, airborne bacteria and viruses are adsorbed to the charged mist. Thereafter, the mist reaching the ground plate 40 is collected in the form of droplets (water droplets), flows down, and is stored in the lower collection tank 14. At this time, the adsorbed airborne bacteria and viruses are removed by destroying the protein cell membrane by the hydroxyl group (OH radical) contained in the mist. Mist, untreated fine dust, airborne bacteria, and viruses that have not been converted into droplets through the above first-step removal step are mixed and converted into droplets inside the second-step droplet filter 50 and stored in the lower collection tank 14. Non-explanatory numeral 50 is a droplet filter for recovering mist discharged into the room by making it droplets.

In the air purifier of one embodiment of the present invention configured as described above, fine dust, airborne bacteria and viruses in the inhaled air are adsorbed to the mist, collected on the ground plate 40, and then taken in the form of droplets while riding down the wall of the duct 11 It goes down and is stored in the collecting tank 14. The water collecting tank 14 is composed of an oblique line and has a multi-stage washable microporous filter 15 built in to remove the collected fine dust, so that the water is reused. In addition, since water is sprayed in the form of mist, fine dust and ultra-fine dust can be removed with only a small amount of water. Airborne bacteria and viruses are removed by electrostatic spraying without sterilizing chemicals, and bacteria and viruses are removed by hydroxyl groups generated during electrostatic spraying. Removed.

In this embodiment of the present invention, indoor and outdoor fine dust and various airborne bacteria and viruses are introduced into the duct 11 through the suction port 36 by the operation of the suction fan 20 . And when the high voltage from the power supply unit 22 is applied to the capillary frame 30 and the ground plate 40 and the water in the water collection tank 14 is supplied to the inlet 36 of the capillary frame 30 through the pump 21 After being dispersed on both sides in the passage 30a, it is put into each capillary chamber 31.

In each of the capillary chambers 31, a plurality of capillaries 32 are spaced apart at equal intervals, and each capillary 32 is surrounded by an arc-shaped circumferential wall 32 and a straight guide wall 34 so that there is a gap between them. water enters into In addition, each guide wall 34 is formed longer from the end of the passage 30a toward the inlet 36, so that each capillary chamber 31 gradually narrows. Therefore, the water discharged from the end of the passage 30a is uniformly supplied to each capillary tube 32 so that the water pressure becomes constant. In addition, each capillary tube 32 passes through the capillary tube 32 as the water flowing into the gap between the circumferential wall 32 and the induction wall 34 and the water flowing in the opposite direction from the auxiliary passage 30b cross each other and vortex. There is no stagnation in the flow.

Therefore, the water creates a Taylor cone at the end of each capillary 32, and then the water particles are finely divided to form a mist in the form of electrostatic spray. Since it heads to the ground plate 40 from the duct 11, fine dust, airborne bacteria and viruses in the air passing through the duct 11 cannot escape and are adsorbed into the mist. Then, while taking the form of droplets on the ground plate 40, it flows down the duct 11, is collected in the water collection tank 14, and then reused.

10: body 11: duct
20: suction fan 30: capillary frame
30a: passage 30b: auxiliary passage
31: capillary chamber 32: capillary
33: peripheral wall 34: induction wall
40: ground plate

Claims (3)

An air purifier for fine dust in which water supplied to each capillary of the capillary frame is made into mist through an electrostatic spray method and then sprayed onto the ground plate so that fine dust and airborne bacteria in the air adhere to the ground plate. In the filter device,
The capillary frame is provided with capillary chambers having the capillaries on both upper and lower sides of the central passage;
Each of the capillaries has an arc-shaped circumferential wall and a straight guide wall spaced apart from each other so that water is guided to each capillary, and the guide walls of each capillary chamber are formed longer from the end of the passage to the center so that the water pressure in each capillary is reduced. A filter device of an air purifier for fine dust, characterized in that it is kept constant. According to claim 1,
An auxiliary passage connecting each capillary is formed in each of the capillary chambers, so that water flowing between the circumferential wall and the guide wall and the water flowing in from the auxiliary passage alternately swirl and guide the capillary to the capillary. Filter device of air purifier for fine dust. According to claim 1,
Each capillary chamber of the capillary frame has an open top, and a cover covering the open capillary chamber is provided on the top of the capillary frame, and an inlet for supplying water to the center of the passage is formed in the center of the cover. Filter device of air purifier for dust.

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