JPH1050U - Air cleaner - Google Patents

Abstract

(57) [Problem] To provide a small home-use air purifier using a gas-liquid contact method. SOLUTION: Air fed by a fan 7 for taking in indoor air is taken into a cylindrical gas-liquid contact portion 1 as a swirling flow, and is brought into contact with liquid ejected from a liquid ejection nozzle 4.
Liquid is exhausted through a communication pipe 8 to a liquid drop separation section 9 provided adjacent to the gas-liquid contact section 1, and a liquid entrained from air taken in as a swirling flow through the communication pipe 8 in the liquid drop separation section 9. Is centrifuged. By installing the air cleaner 50 as a single unit in a room, the room air can be purified by a gas-liquid contact method, and then the liquid can be separated and discharged into the room.

Description

[Detailed description of the invention]

[0001]

TECHNICAL FIELD OF THE INVENTION

 The present invention relates to an air purifier that purifies indoor air by a gas-liquid contact method.

[0002]

[Prior art]

 There are various types of air purifying devices. Among them, a gas-liquid contacting type in which air and liquid droplets are brought into contact with each other to purify air is shown in FIG. 4 (see Japanese Patent Application Laid-Open No. 57-197018). )It has been known. In this air purifying apparatus 100, reciprocating air conduits 103 and 103 'are connected to a refrigerator 101, which is a closed space, to circulate air in the refrigerator 101 for cleaning and cooling. That is, the air in the refrigerator 101 is sucked by the fan F and sent to the cylindrical spray cooler 106 through the air conduit 103. The spray cooler 106 pumps the water in the cold water tank 110 to the cold water pipe 108 by the pump P, and jets it as water droplets from spray ports 109 a to 109 c provided in the cold water pipe 108. As a result, the air sent into the spray cooler 106 is cooled by contact with the water droplets jetted from the spray ports 109a to 109c, and at the same time, dust in the air adheres to the water droplets and is cleaned. . Subsequently, the cooled and purified air rises upward from the bottom in the central vertical passage 107a in the cylindrical spray cooler 106, and is supplied to the cyclone 104 from the upper outlet 107b through the reflux pipe 107. Is done. The cyclone 104 is installed at a location distant from the spray cooler 106, and the air introduced into the inside from the inlet 107 c in the upper part of the side wall separates water droplets in the cyclone 104 by the action of centrifugal force. The water droplets are returned to the spray cooler 106, and the clean air from which the water droplets have been separated rises upward from below in a central vertical passage 107a 'in the cyclone 104, and is returned from an upper outlet 107b'. It is discharged into a pipe 107 'and returned into the refrigerator 101 via a return air conduit 103'.

[0003]

[Problems to be solved by the invention]

 The above-described conventional air purifying apparatus 100 is designed on the premise that it is applied to a refrigerated warehouse for chilling foods and the like, offices, factories, hospital rooms, and other large-scale spaces. The basic concept is spray cooling. An air purifying system is provided in which an air purifier 106 and a cyclone 104 are installed outside a space to be treated and air is circulated externally for purification. Therefore, assuming that this type of air purification system is applied to ordinary households, it is difficult to apply it to most households with limited installation space due to the large size of the equipment, and the entire system is expensive. Therefore, there was a problem that the method was not practical. In particular, in the conventional air purifying apparatus 100, since the cylindrical spray cooler 106 and the cyclone 104 are disposed independently of each other at a distance, the air purifying apparatus 100 lacks consideration for saving installation space. In addition, since the air outlet 107b is disposed above the spray cooler 106, a large space is required in the vertical direction, and it is difficult to make the whole compact. there were.

The present invention has been made in view of the above-mentioned conventional circumstances, and has as its object to provide a small-sized air purifier that can be sufficiently adopted for home use while adopting a gas-liquid contact system.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a fan that takes in indoor air and a cylindrical air that takes in the air sent by the fan as a swirling flow, makes contact with the liquid ejected from the liquid ejecting nozzle, and exhausts it to the outside. A liquid contact part and a gas-liquid contact part are provided adjacent to the gas-liquid contact part, and the air exhausted from the gas-liquid contact part is taken in as a swirling flow through a communication pipe, and the liquid accompanying the air is centrifuged. And a cylindrical droplet separating section.

[0006] Further, according to the present invention, the communication pipe is disposed inside a tangent plane which is in common contact with an outer surface on the same side with respect to a line connecting the centers of the gas-liquid contact section and the droplet separation section. Alternatively, the communication pipe is constituted by a straight pipe having a common tangent plane which is in contact with the outer surface on the same side of a line connecting the center of the gas-liquid contact section and the center of the droplet separation section as a part of the pipe wall. It is a characteristic.

Further, in the present invention, the gas-liquid contact portion is provided with a liquid supply pipe at a central portion, and the liquid injection nozzle is provided on a peripheral surface of the liquid supply pipe, or It is characterized in that a pump is connected to the liquid supply pipe via a liquid supply path, or that the liquid drop separation section has a column disposed in the center.

[0008]

[Embodiment of the invention]

 Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing an embodiment of the air purifier of the present invention, FIG. 2 is a plan view of the air purifier shown in FIG. 1, and FIG. It is sectional drawing.

The air purifier 50 shown in FIGS. 1 and 2 takes in a fan 6 that takes in room air, and air that is sent by the fan 6 as a swirling flow, makes contact with the liquid ejected from the liquid ejecting nozzle 4, A cylindrical gas-liquid contact portion 1 to be evacuated, and air exhausted from the gas-liquid contact portion 1 which is provided adjacent to and adjacent to the gas-liquid contact portion 1 is taken in as a swirling flow through a communication pipe 8. The main part includes a cylindrical droplet separation unit 9 for centrifuging the liquid entrained in the air.

The gas-liquid contact part 1 is a part for bringing the air to be cleaned into contact with the liquid droplets, and has a pipe 3 that penetrates the bottom and rises vertically upward at the center of the first cylindrical body 2. In addition, a large number of liquid jet nozzles 4 are radially attached to the pipe 3. The first cylindrical body 2 has an inlet 5 which opens in the upper part in the tangential direction of the outer periphery, and an outlet 8a which also opens in the tangential direction of the outer part in the lower part. The fan 6 takes in the room air around the air purifier 50 and feeds it to the inlet 5 under pressure. A dust collecting filter device 7 is provided at the inlet side of the fan 6.

The droplet separator 9 separates droplets from air containing droplets. The droplet separator 9 has an air outlet 12 at the upper end surface and a second air inlet 8b at the lower portion. A cylindrical body 10 is integrally provided adjacent to the first cylindrical body 2. The inlet 8b of the second cylindrical body 10 and the outlet 8a of the first cylindrical body 2 are connected to each other via a communication pipe 8 extending in the horizontal direction. In the present embodiment, as shown in FIG. 2, the communication pipe 8 is constituted by a straight pipe whose tangent plane common to both the cylindrical bodies 2 and 10 is a part of the pipe wall. However, the tangent plane in this case refers to a plane that is in common contact with the outer surface on the same side with respect to a line connecting the centers of the gas-liquid contact section 1 and the liquid drop separation section 9. The contour line is a tangent line that is in common contact with both cylinders 2, 10.

The droplet separation unit 9 is for centrifuging air and droplets, and is a column for guiding air to the center of the second cylindrical body 10 in a substantially spiral shape along the cylindrical inner peripheral wall. 11 is fixed vertically. Therefore, centrifugal separation can be performed by making the most of the kinetic energy of the air containing the droplets supplied from the gas-liquid contact section 1. That is, the gas-liquid contact part 1 and the droplet separation part 9 are arranged at the shortest distance from each other to achieve compactness and space saving. The communication pipe 8 formed of a straight pipe that reduces the velocity loss of the air discharged from the inside of the gas-liquid contact portion 1 can be minimized, and the kinetic energy can be effectively transmitted.

The bottom of the first cylinder 2 of the gas-liquid contact section and the bottom of the second cylinder 10 of the droplet separation section 9 are connected to each other through a passage 14. The bottoms of the bodies 2 and 10 constitute the liquid tank section 17. At the lower end of the pipe 3, a pump 15 for pumping the liquid stored in the liquid tank 17 is provided, and a suction pipe 16 of the pump 15 is opened at the bottom of the liquid tank 18. . Further, a liquid supply tank 18 is connected to the liquid tank 17 so that liquid can be supplied from the liquid supply tank 18 when the liquid level drops.

As shown in FIG. 3, a dust collecting filter device 7 disposed in front of the fan 6 is a simple mesh-shaped pre-filter 20 for removing large dust, and a discharge wire and a counter electrode (not shown). A charging section 21 for charging the dust in the passing air by discharging, a dust collecting section 22 for charging the dust in the opposite polarity to the dust and adsorbing the dust by electric force, and an activated carbon filter 23 for deodorization. Built-in. In addition, as the dust collecting filter device 7, a dust collecting filter device using a thin filter material such as filter cloth, filter paper, or the like, or a filling filter material forming a filter layer can be used.

The air purifier 50 having the above-described structure first passes the indoor air through the dust collecting filter device 7 to remove dust to some extent, and then performs a process of gas-liquid contact and droplet separation. In the case of this example, large dust is removed by the pre-filter 20, charged by the charging unit 21, absorbed by the dust collection unit 22 by electric force, and then deodorized by the activated carbon filter 23. Thus, the air that has passed through the dust filter 7 is tangentially pumped into the cylinder 2 of the gas-liquid contact section 1 through the inlet 5 by the fan 6, and flows through the inside of the first cylinder 2 along the arrow. Turn down. That is, it descends while rotating in a substantially helical manner around the pipe 3 along the inner peripheral surface of the first cylindrical body 2, and at this time, it is pumped by the pump 15 and ejected from the liquid ejecting nozzle 4. Contact fine droplets. It should be noted that the fine liquid droplets include liquid droplets that fall on the inner peripheral surface of the first cylindrical body 2 and are reduced in size. The dust not removed by the dust filter 7 at this time adheres to the droplets, agglomerates, is removed by centrifugal force, and settles on the bottom of the first cylindrical body 2.

The air from which dust has been removed by contact with the droplets flows into the droplet separation unit 9 via the communication pipe 8. In this case, the air discharged from the outlet 8a along the inner peripheral wall of the first cylindrical body 2 vigorously travels straight through the communication pipe 8 formed of a straight pipe, and from the inlet 8b of the second cylindrical body 10. The fluid flows into the second cylindrical body 10 from the tangential direction and forms a swirling flow with almost no loss of power. In other words, the velocity loss when passing through the communication pipe 8 can be almost ignored, and the air that has been brought into gas-liquid contact as the swirling flow can be subjected to the droplet separation process as the swirling flow. Thus, the air supplied into the second cylindrical body 10 is guided by the inner peripheral surface of the second cylindrical body 10 and turns around the cylinder 11 in a spiral shape while the arrow shown in FIG. Rise in the direction of. Large diameter droplets are separated from the swirling air by centrifugal force. The separated droplets settle at the bottom of the second cylindrical body 10 of the droplet separating section 9, so that only the clean air containing the remaining fine droplets is discharged from the outlet 12. When the liquid accumulated in the bottom of the gas-liquid contact section 1 and the liquid drop separating section 9, that is, in the liquid tank section 17, decreases, the liquid can be supplied from the liquid supply kunk 17.

As described above, the air purifier 50 takes in the air sent from the fan 6 that takes in the room air into the cylindrical gas-liquid contact portion 1 as a swirling flow, and jets the air from the liquid jet nozzle 4. It was brought into contact with the liquid, exhausted through a communication pipe 8 to a droplet separation section 9 provided adjacent to the gas-liquid contact section 1, and taken in as a swirling flow through the communication pipe 8 in the droplet separation section 9. Since the entrained liquid is separated from the air by centrifugation, it is installed in a room as a single unit. After the room air is cleaned by the gas-liquid contact method, the liquid can be separated and discharged into the room. Thus, the configuration can be simplified as compared with the conventional system in which air is circulated by an air purifier installed outside the space to be treated, and the gas-liquid contact section 1 and the droplet separation section 9 can be cleaned. The space is very compact as a whole, and the space that is wasted or idle is reduced as much as possible to meet the demands of home use. In addition, by arranging the gas-liquid contact part 1 and the liquid drop separation part 9 at almost the shortest distance from each other, it is possible to not only meet the demand for compactness and space saving, but also to provide a common tangential plane for the cylindrical bodies 2 and 10. As a part of the pipe wall, the communication pipe 8 composed of a straight pipe minimizes the velocity loss of the air exhausted from the inside of the gas-liquid contact section 1 and can respond to the demand for effective transmission of kinetic energy. It is possible to obtain sufficient purification capacity for home use without adding a special power source outside the pump 6 and the pump 15.

The gas-liquid contact portion 1 has a configuration in which a liquid supply pipe 3 is provided at a central portion and a liquid injection nozzle 4 is provided on a peripheral surface of the liquid supply pipe 3. The liquid can be ejected from the direction perpendicular to the swirling flow to the air flowing as a swirling flow from the direction, and the droplets can be efficiently ejected to the dust contained in the air. It can be coagulated and separated from air in a large amount by centrifugal force, and can be efficiently collected together with the liquid settled at the bottom of the gas-liquid contact portion 1. Further, since the pump 15 is connected to the liquid supply pipe 3, the liquid pressurized and supplied with the pumping capability of the pump 15 can be vigorously ejected from the liquid ejecting nozzle 4, and gas-liquid contact can be achieved. The dust separation effect can be enhanced. Furthermore, since the column 11 is disposed in the center of the droplet separating section 9, the mixed flow of air and liquid introduced into the droplet separating section 9 from the tangential direction is centered on the column 11. By assisting as a swirling flow, the centrifugal separation capability of the droplet separation section 9 can be ensured.

In the above embodiment, the dust collecting filter device 7 provided on the entrance side of the fan 6 can be omitted. Further, a filter may be provided in the middle of the circulation path in order to reduce contamination of the circulating fluid. It is also possible to install a cooler to cool the circulating liquid, spray the cooled liquid, and adjust the temperature.

[0020]

[Effect of the invention]

 According to the present invention, the air supplied by the fan that takes in the indoor air is taken into the cylindrical gas-liquid contact portion as a swirling flow, brought into contact with the liquid ejected from the liquid ejection nozzle, and adjacent to the gas-liquid contact portion. Exhaust air through the communicating pipe to the attached drop separation unit, and in the liquid drop separation unit, install it indoors as a single unit to centrifuge the accompanying liquid from the air taken in as a swirl through the communication pipe. As a result, the room air can be purified by the gas-liquid contact method, and then the liquid can be separated and discharged into the room.Thus, the air is circulated by the air purifier installed outside the space to be treated, thus purifying the air. Perform Compared to the conventional system, the structure can be simplified, and the gas-liquid contact part and the droplet separation part are adjacently installed side by side, so the whole is very compact and wasteful space or play The space can be reduced as much as possible to meet the demand for space-saving for home use. In addition, the gas-liquid contact part and the droplet separation part are arranged at the shortest distance from each other, making it compact and saving space. In addition to responding to the demand for space, the communication pipe, which has a short pipe length and takes into account the formation of swirling flow, minimizes the velocity loss of air discharged from inside the gas-liquid contact part and effectively transfers kinetic energy. It has excellent effects such as obtaining sufficient purification capacity for home use without adding an extra power source.

Further, since the communication pipe is disposed inside a tangent plane that is in common contact with the outer surfaces of the gas-liquid contact portion and the outer surface of the liquid droplet separation portion, the communication pipe protrudes and narrows the surrounding space. The effect is that the gas-liquid contact section and the droplet separation section can be connected in a shortest distance and the overall occupied space can be minimized to promote practical use for home use. To play.

Further, since the communication pipe is constituted by a straight pipe having a common tangent plane in contact with the outer surfaces of the gas-liquid contact portion and the outer surface of the droplet separation portion as a part of the tube wall, the communication tube is discharged from the inside of the gas-liquid contact portion. It can minimize the speed loss of air, respond to the demand for effective transmission of kinetic energy, and obtain sufficient purification capacity for home use without adding a special power source. There is an effect that the piping can be adjusted to the optimal layout of the gas-liquid contact part and the droplet separation part without deteriorating the compactness.

The gas-liquid contact portion has a configuration in which a liquid supply pipe is provided at a central portion and a liquid injection nozzle is provided on a peripheral surface of the liquid supply pipe. Liquid can be ejected from the direction perpendicular to the swirling flow, and droplets can be ejected efficiently from dust contained in the air. A large amount of air can be separated from the air by the force, and there is an effect that the liquid can be efficiently collected together with the liquid settled at the bottom of the gas-liquid contact part.

Further, since the liquid supply pipe is connected to a pump via a liquid supply path, the liquid pressurized and supplied with the pumping capability of the pump can be jetted vigorously from the liquid jet nozzle. And the effect of separating dust by gas-liquid contact can be enhanced.

In addition, since the droplet separating section has a column disposed in the center, the mixed flow of air and liquid introduced from the tangential direction into the droplet separating section is converted into a swirling flow around the column. With such a configuration, the centrifugal separation capability of the droplet separation section can be assured.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the air purifier of the present invention.

FIG. 2 is a plan view of the air purifier shown in FIG.

FIG. 3 is a sectional view of the dust collecting filter device shown in FIG.

FIG. 4 is a schematic configuration diagram showing an example of a conventional air cleaning device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gas-liquid contact part 2 1st cylindrical body 3 Pipe 4 Liquid injection nozzle 5 Injection port of 1st cylindrical body 6 Fan 7 Dust collection filter 8 Communication port 8a Outlet of 1st cylindrical body 8b 2nd cylindrical body Inlet 9 Droplet separation unit 10 Second cylinder 11 Column 12 Outlet of second cylinder 15 Pump 50 Air purifier

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B01D 53/02 B01D 53/02 Z F24F 6/14 F24F 6/14 7/00 7/00 A

Claims (6)

[Utility model registration claims] 1. A fan for taking in room air, a cylindrical gas-liquid contact portion for taking in air fed by the fan as a swirling flow, coming into contact with liquid ejected from a liquid ejection nozzle, and exhausting the gas to the outside, A cylindrical droplet separating unit that is provided adjacent to the liquid contact unit, takes in air exhausted from the gas-liquid contact unit as a swirling flow through a communication pipe, and centrifugally separates liquid accompanying the air. An air purifier characterized by comprising: 2. The communication pipe according to claim 1, wherein the communication pipe is disposed inside a tangent plane that is in common contact with an outer surface on the same side of a line connecting the center of the gas-liquid contact section and the center of the droplet separation section. Item 1
An air purifier as described. 3. The communication pipe comprises a straight pipe having a common tangent plane which is in contact with an outer surface on the same side as a line connecting the center of the gas-liquid contact section and the center of the droplet separation section as a part of a pipe wall. The air purifier according to claim 1, wherein the air purifier is characterized by the fact that the air purifier has performed. 4. The gas-liquid contact portion, wherein a liquid supply pipe is disposed at a central portion, and the liquid injection nozzle is provided on a peripheral surface of the liquid supply pipe. An air purifier as described. 5. The air purifier according to claim 4, wherein the liquid supply pipe is connected to a pump via a liquid supply path. 6. The air purifier according to claim 1, wherein a column is disposed in a center portion of the droplet separating section.