JP7232736B2 - air purifier - Google Patents

Description

The present invention relates to an air purifier for purifying air containing fine particles such as dust and pollutants.

Conventionally, as an air purifying device that removes odors and pollutants contained in the air with water, there is a water tank body in which the base of the overblow pipe is connected to the top, and a water supply that supplies water to the bottom of this water tank. a pipe, a first water pipe for circulating the water in the water tank body to the outside, a pump for sucking the water from the first pipe, a second water pipe for sending the high-pressure water flow from the pump to the injection nozzle, and the second water pipe. 2. A nozzle provided at the tip of the water pipe and facing the vicinity of the opening of the first duct so that the high-pressure water flow from the second water pipe can be jetted, and a lower end connected to the water tank body. a first duct having the nozzle at its upper end and having an opening for sucking contaminants from the air; a lower end connected to the water tank main body; It is composed of a second duct that discharges from the part to the outside.

In the above configuration, the flow velocity of the high-pressure water stream jetted from the jet nozzle draws contaminants in the air into the first duct together with the air, and then removes the contaminants with the water in the water tank body, Purified air can be passed through the second duct and fresh air can be discharged to the atmosphere" (Patent Document 1).

However, in the above known invention, the flow speed of the high-pressure water flow quickly draws air from the outside through the opening into the first duct, so the air rides on the water flow and passes through the first duct as it is. Therefore, the water immediately falls straight into the aquarium. Therefore, there is a problem that the contact time between the air to be purified and the water is short, and odors and contaminants in the air cannot be sufficiently removed.

In addition, since the water falls straight from the first duct into the water tank, it does not come in contact with the air sufficiently, resulting in insufficient purification.

JP-A-7-112110

In view of the conventional drawbacks as described above, the present invention provides an air purifying device that purifies the air by contacting air containing fine particles with water for a long time so as to mix the fine particles in the air and adsorbing the fine particles in the water. It is an object.

In order to achieve the above object, the air purifier according to claim 1 of the present invention comprises a water tank main body having a space in the upper part, and a cylinder provided on the upper part of the water tank main body and having an air suction part at the upper end. a purification duct having a shape, a discharge duct provided in the upper part of the water tank body for discharging the air sucked from the air suction part to the atmosphere, and a pump and a circulation path connected to the pump connected to the water tank body. and an air purifying apparatus comprising an injection nozzle for injecting water into the purification duct, wherein water injected from the injection nozzle and air sucked from the air intake portion are below the injection nozzle. It has a stirring member for further spirally diffusing and stirring the mixed fluid, which has a larger diameter than the upper and lower ends of the purification duct and is formed to protrude outward in a flange shape. The stirring member comprises a circular or polygonal bottom plate against which the water jetted from the jet nozzle collides, and the stirring member is erected on the outer periphery of the bottom plate. The recovery means comprises a recovery hole provided on the bottom surface of the stirring part outside the stirring member, and a recovery hole provided to guide the mixed fluid. and a recovery portion provided so as to communicate with the recovery hole, the guide member being guided to the recovery hole when the mixed fluid guided by the stirring member collides with the guide member, The guide member is formed in a cylindrical shape with an open bottom and a part of the outer peripheral surface, and the mixed fluid enters through the opening in the outer peripheral surface of the guide member and enters through the opening in the bottom surface of the guide member. It is guided so as to drop into the recovery hole .

The recovery unit of the air purifier of the air purifying device according to claim 2 comprises filtering means for filtering the mixed fluid, and a filtered water supply line for supplying the fluid filtered by the filtering means to the water tank main body. characterized by

The tip end portions of the plurality of water flow guide plates of the air purifier according to claim 3 are positioned closer to the tip end portion side of the adjacent water flow guide plates than the radial position of the base end portions of the adjacent water flow guide plates. characterized by being positioned respectively .

As is clear from the above description, the present invention has the following effects.
(1) In the invention according to claim 1, since the stirring member is provided, the air can be turned into a helical swirling flow in the stirring section, and the collecting section enables contaminants and the like to be removed by the stirring member. The contained fluid can be agitated for heat exchange, pollutants can be recovered from the recovery section, and clean air can be discharged to the atmosphere through the discharge duct.
(2) Water and air collide with the agitating member and flow spirally (spirally) by the water flow guide plate, so that the water and air around the agitating member mix in a turbulent state, and contaminants in the air are removed. The adsorption effect can be improved, and even gaseous contaminants can be liquefied and adsorbed by heat exchange.
(3) By providing the collection unit, the mixed fluid stirred by the stirring member and containing contaminants and the like can be efficiently collected, and the mixed fluid can be prevented from falling into the water tank.
Therefore, when the contamination is severe, the mixed fluid can be recovered without dropping into the water tank, and contamination of the circulating water can be prevented.
(4) Since water and air can be separated to some extent by the collecting means, the moisture in the air can be removed before the purified air is discharged into the atmosphere.
(5) A second spiral flow is also generated inside the guide member, and dust, odors, contaminants, etc. contained in the air can be collected more efficiently.
(6) The invention described in claim 2 can also provide the same effects as (1) to (5) above, and can purify the mixed fluid recovered by the recovery means and supply it to the water tank main body.
(7) The invention described in claim 3 can also obtain the same effects as the above (1) to (6), and the water swirls in a turbulent state in a large-diameter stirring part, Since the air is mixed with the water, the air can be kept in contact with the water for a long time, and the water can remove dust, odors, contaminants, etc. contained in the air.

1 to 7 are explanatory diagrams showing the first embodiment of the present invention.
8 to 10 are explanatory diagrams showing the second embodiment of the present invention.
11 and 12 are explanatory diagrams showing a third embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS The outline|summary explanatory drawing of the air purification apparatus of 1st Embodiment. The top view of a stirring member. FIG. 4 is a perspective explanatory view of a stirring member; Explanatory drawing of a stirring part and a collection|recovery means. Outline explanatory drawing of use state. FIG. 4 is a schematic explanatory diagram from a plan view showing the flow of air and water in the vicinity of the stirring section; FIG. 4 is a schematic explanatory diagram from a front view showing the flow of air and water near the stirring section; The schematic explanatory drawing of the air purification apparatus of 2nd Embodiment. Explanatory drawing of a stirring part. Explanatory drawing of a stirring part and a collection|recovery means. The schematic explanatory drawing of the air purification apparatus of 3rd Embodiment. Outline explanatory drawing of use state.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail by means of embodiments for carrying out the present invention shown in the drawings.
In the first embodiment for carrying out the present invention shown in FIGS. 1 to 7, 1 is the wet air cleaner of the present invention.

For example, as shown in FIG. 1, the air purifying device 1 is provided with a water tank body 2 having a space in the upper part thereof, and is provided so as to communicate with the upper part of the water tank body 2. A cylindrical purification duct 4 having a portion 3, a discharge duct 5 provided so as to communicate with the upper part of the water tank main body 2 and discharging air sucked from the purification duct 4 to the atmosphere, and the water tank main body 2 An injection nozzle 7 that is connected via a pump 6 and injects water into the purification duct 4 , and below the injection nozzle 7 , the water injected from the injection nozzle 7 collides and is injected into the purification duct 4 . It is composed of a stirring section 9 having a stirring member 8 for spirally diffusing and stirring the water and the air sucked from the air suction section 3 , and a recovery means 10 provided in the stirring section 9 .
The purification duct 4 is, as shown in FIG. The lower end thereof communicates with the connection space 11 of the water tank main body 2 .

A jet nozzle 7 for jetting water downward is attached to a portion near the upper end of the purification duct 4 , and the stirring member 8 is provided below the jet nozzle 7 . The purification duct 4 is formed such that the portion where the stirring member 8 is provided has a larger diameter than the other portions.
The injection nozzle 7 injects the water supplied from the water reservoir 12 of the water tank main body 2 through the pump 6 toward the lower part of the purification duct 4 as described above, and pollutants, dust, fine dust, etc. in the air are injected. to adsorb to water.

When the water is jetted downward from the purifying duct 4 from the jet nozzle 7, it spreads like a film, and the inside of the purifying duct 4 becomes negative pressure. and the sucked air come into contact with each other, and the foreign matters in the air are caught in the water flow, forming a mixed fluid in which air and water are mixed.

As shown in FIGS. 2 and 3, in the present embodiment, the stirring member 8 has a circular (disk-shaped) bottom plate 13 in plan view against which the water (mixed fluid) jetted from the jet nozzle 7 collides, and the bottom plate 13. It is composed of a plurality of (in this embodiment, four) water flow guide plates 15 having obtuse angle bends 14 erected on the outer periphery of the water flow guide plate 13 .

The stirring part 9 is formed to have a larger diameter than the purification duct 4, and the stirring member 8 is attached by fixing the upper end part 15a of the water flow guide plate 15 to the top surface 9a of the flange-shaped stirring part 9. .

Although the bottom plate 13 is formed in a circular shape in plan view in this embodiment, it may be formed in a polygonal shape in plan view, such as a hexagon, an octagon, or a quadrilateral.

The distal end portions 15b of the four water flow guide plates 15 are located on the distal end side relative to the radially outer position (line r) of the base end portions 15c of the adjacent water flow guide plates 15, respectively. By erecting the water flow guide plate 15 in this manner, four narrow flow paths 16 are formed, and the water that collides with the bottom plate 13 flows laterally and then collides with the water flow guide plate 15 without fail. Since the water is diffused into the agitating portion 9 (large-diameter portion of the purification duct 4), a spiral swirling flow is generated and the effect of agitating water and air can be improved.

In addition, since the water flow guide plate 15 is formed with an obtuse bend 14 in this embodiment, the jetted water is directed to the bottom plate 13, the vicinity of the base end of the water flow guide plate 15, and the bend 14 of the water flow guide plate 15. Collision in the vicinity, mixing water and air, can enhance the adsorption effect of pollutants.

In this embodiment, since the upper end portion 15a of the water flow guide plate 15 is fixed to the top surface 9a of the stirring portion 9, the water and air reliably pass through the flow path 16, and the water and air are stirred. can be improved.

As shown in FIG. 4, in the present embodiment, the agitator 9 has a larger diameter than the upper and lower ends of the purification duct 4 and is formed to protrude outward in a flange shape. By forming the stirring part 9 in this way, the water and air stay for a certain period of time near the bottom surface 9b of the stirring part 9 while rotating violently, mixing the water and the air for a longer period of time and enhancing the effect of adsorbing contaminants. can be done.

In addition, the jetted water collides with the bottom plate 13 of the stirring member 8, the vicinity of the base end portion of the water flow guide plate 15, and the vicinity of the bend 14 of the water flow guide plate 15, thereby not only changing the water flow direction but also fine particles. Therefore, when mixed with air, the effect of adsorbing contaminants, dust, etc. can be enhanced. The adsorption effect can be further enhanced.

In addition, for example, contaminants that are mixed with gas or air in a high temperature state, such as oil smoke, are mixed with water for a long time, heat exchange (temperature reduction), and mixes with water to purify the air.

A recovery means 10 is provided on the bottom surface 9b of the stirring part 9 outside the stirring member 8, and the mixed fluid such as water and contaminants spirally swirling in the stirring part 9 is recovered by the recovery means 10. do.

The recovery means 10 includes a recovery hole 17 provided in the bottom surface of the stirring unit 9 outside the stirring member 8 and a guide member 18 provided so as to guide the mixed fluid so that it falls into the recovery hole 17. and a recovery portion 19 provided so as to communicate with the recovery hole 17 .

The recovery hole 17 is formed at a position closer to the inner peripheral surface of the stirring part 9 than the stirring member 8 , and the size of the recovery hole 17 is such that substantially all of the water injected from the injection nozzle 7 flows downward from the recovery hole 17 . It is desirable that the size be such that it can be dropped onto the floor.

In addition, it is desirable to provide a peripheral wall 9c at the communicating portion between the lower end portion of the agitating portion 9 and the purification duct 4 so that the mixed fluid does not flow into the lower portion of the purification duct 4. As shown in FIG. By providing such a peripheral wall 9c, moisture and air can be reliably separated, and by making the height of the peripheral wall lower than the bottom surface of the stirring member 8, the filtered water supply line 20 of the recovery means 10 When the sluice valve 20a is closed, the mixed fluid can also flow to the purification duct 4b downstream of the stirring section 9.

In this embodiment, only one recovery means 10 is provided, but in the case where a plurality of recovery means 10 are provided, substantially all of the water injected from the injection nozzle 7 can be dropped through the plurality of recovery holes 17. It should be formed to a size that can be used.

Around the recovery hole 17, a cylindrical shape is formed in which the bottom surface is open so as to communicate with the recovery hole 17 and a part of the outer peripheral surface is open, and the mixed fluid enters through the opening of the outer peripheral surface. , a guide member 18 is provided for guiding so as to drop from the bottom opening to the recovery hole 17 .

By providing such a guide member 18, a spiral swirl flow is generated inside the guide member 18, and the mixed fluid can be separated from the air and recovered (dropped from the recovery hole 17 to the recovery section 19). .

The recovery unit 19 is a part that recovers and processes the mixed fluid that has passed through the recovery hole 17. In the present embodiment, the recovery unit 19 includes filtering means 21 that filters the liquid mixed fluid containing contaminants and the like, and the filtering means 21 is provided with a filtered water supply line 20 for supplying the fluid (filtered water) filtered in step 1 to the water reservoir 12 of the water tank main body 2 . The filtered water supply line 20 is desirably provided with a sluice valve 20a.

By providing such a recovery unit 19, water from which contaminants and the like have been removed by filtration is supplied to the water tank main body 2, so that the water inside the water tank main body 2 can be prevented from being contaminated. When the water inside the water tank main body 2 is supplied to the injection nozzle 7, the load on the pump 6 for supplying water to the injection nozzle 7 due to contaminants or the like can be reduced, and the pump 6 can be protected.
When the mixed fluid is recovered from the recovery portion 19 by the recovery means 10 , the mixed fluid hardly drops from the discharge duct 5 and most of the mixed fluid is recovered in the recovery portion 19 .

The water tank main body 2 is formed in a box shape, and in the present embodiment, has a connection space 11 in the upper part to which the purification duct 4 and the discharge duct 5 are connected. The purification duct 4 and the discharge duct 5 are indirectly connected via this connection space 11 . The discharge duct 5 may discharge upward, and may be provided with a mesh filter or the like.
In this embodiment, a flange portion 2a for attaching a purification duct 4 is formed on the upper portion of the water tank main body 2. As shown in FIG. The discharge duct 5 is provided integrally with the upper portion of the water tank main body 2 .

A water storage portion 12 is formed in the lower portion of the connection space 11 , and water jetted from the injection nozzle 7 drops into this water storage portion 12 . A circulation passage 22 having a pump 6 is connected to the water storage portion 12 , and the water in the water storage portion 12 is supplied to the injection nozzle 7 through this circulation passage 22 . In addition, it is desirable to provide the tank body 2 with an idling prevention sensor 23 for preventing the pump 6 from idling.

The connection space 11 and the water reservoir 12 are distinguished for convenience of explanation, but the connection space 11 means a portion above the water surface of the water reservoir 12, and a partition or the like is not necessarily provided. . In this embodiment, an overflow port 12a is provided at the lower end of the connection space 11 so that the water surface of the water reservoir 12 does not rise above a certain level.

A discharge port 2b for discharging the water in the water reservoir 12 is provided on the bottom surface of the water tank main body 2. As shown in FIG.
When using the air purifier 1, the pump 6 is operated and water is vigorously jetted from the jet nozzle 7. - 特許庁Then, the inside of the purification duct 4 becomes negative pressure, and the air to be purified is sucked from the air intake portion 3 .

The jetted water spreads like a film inside the purification duct 4 in a substantially conical shape, and mixes with the air that has flowed into the purification duct 4. 9 and collide with the bottom plate 13 of the stirring member 8 . After that, the water and the sucked air flow laterally, for example, as shown in FIG. Adsorbed by water.

At this time, in the large-diameter stirring section 9, as shown in FIG. 7, the air and water, which are mixed while spirally turning, rotate near the bottom surface 9b of the stirring section 9 due to centrifugal force and rise on the wall surface. Since the water and air released from the stirring member 8 rotate and move toward the bottom surface 9b of the stirring section 9, the centrifugal force that causes the water surface to rise and the water and air released from the stirring member 8 move toward the stirring section. The force directed toward the bottom surface 9b of the stirring unit 9 collides with each other, generating a turbulent flow in the vicinity of the bottom surface 9b of the stirring unit 9 and also in the height direction, and the air and water are vigorously mixed.

The water and air thus mixed are vigorously stirred while swirling, and collide with the guide member 18 of the recovery means 10 provided in the stirring section 9 without falling toward the tank main body 2 due to the peripheral wall 9c. A swirling flow is generated inside the guide member 18 .

As a result, the water (mixed fluid) containing contaminants and the like is recovered by the recovery means 10, the purified air flows over the peripheral wall 9c and flows toward the water tank main body 2, and then the air flows into the connection space 22, where it flows into the discharge duct. 5 is released to the atmosphere.

On the other hand, the mixed fluid that has adsorbed contaminants and the like is guided by the guide member 18 of the recovery means 10 to become a second swirl flow, drop from the recovery hole 17 and flow into the recovery section 19 . In the recovery unit 19, the filtered water from which contaminants have been removed by the filtering means 21 flows into the water storage unit 12 of the water tank main body 2 via the filtered water supply line 20, passes through the circulation path 22 again, and is injected from the injection nozzle 7 and the like. be.

[Different modes for carrying out the invention]
Next, different modes for carrying out the invention shown in FIGS. 8-12 will be described. In describing these different modes for carrying out the present invention, the same components as those in the first mode for carrying out the present invention are denoted by the same reference numerals, and duplicate descriptions are omitted.

In the second embodiment for carrying out the present invention shown in FIGS. 8 to 10, the main difference from the first embodiment for carrying out the present invention is that three water flow guides are provided on the outer peripheral portion of the bottom plate 13. The present invention can also be applied to such an air purifier 1A in that the agitating member 8A having the plate 15 erected and the collection means 10A having the guide member 18A having a substantially arc-shaped wall surface in a plan view are used. It is possible to obtain the same effects as those of the storage container of the first form for the purpose.

In the present embodiment, the tip portion 15b of the water flow guide plate 15 is not located on the tip portion side of the radially outer position (line r) of the base end portion 15c of the adjacent water flow guide plate 15. Most of the water collides with the water flow guide plate 15 and is discharged from the tip portion 15b to the stirring unit 9, so that the water flow as a whole is a swirling (spiral) water flow. and the air is violently stirred.

In the second embodiment for carrying out the present invention shown in FIGS. 11 and 12, the main difference from the first embodiment for carrying out the present invention is that the injection nozzle 7 and the water tank main body 2 are not used, Since the air introduction means 24 such as a blower for introducing air into the purification duct 4 in a dry manner is provided, the air purification device 1B can also be used in a dry manner to purify the air and can be attached to a normal duct or the like. It is possible to purify the air inside the duct etc.

In the present embodiment, a blower is used as the air introduction means 24, but when it is attached to an air pipe such as a duct, a compressor or other equipment that circulates air in the air pipe becomes the air introduction means 24. , the purification duct 4 b downstream of the stirring section 9 serves as the discharge duct 5 .

The collection means 10B of the present embodiment stirs the gaseous mixed fluid in the stirring unit 9 and performs heat exchange to liquefy the gaseous contaminants present in the air, and the liquefied contaminants are collected. It is provided with a recovery pipe 25 flowing from the hole 17 and a large-diameter recovery section 19A provided in the lower part of this recovery pipe for precipitating (stagnation) and removing contaminants. The interior of the recovery tube 25 and the recovery section 19A is under positive pressure when the air introduction means 24 is operated, and the contaminants and air spirally circulate and fall through the recovery tube 25 to the recovery section 19A. do. The air and contaminants spirally swirl inside the recovery section 19A, and heat is exchanged.

In such a configuration, an opening/closing lid (not shown) or the like is provided at the lower end of the collecting portion 19A, and after the purification work is completed, the air introducing means 24 is stopped and the lid is opened to collect the contaminants.

This large-diameter collecting portion 19A may be detachably provided in the collecting pipe 25 or the collecting hole 17, and after the purification work is completed, the collecting portion 19A may be removed to collect the contaminants. In such a case, a bag or the like may be provided inside the recovery unit 19A so that the contaminant can be recovered by recovering the bag.

By the way, a filter (not shown) is provided downstream of the collection unit 19A and connected to the air release or exhaust duct 5 through this filter, and the air from which contaminants have been removed by passing through the filter is released to the atmosphere or the exhaust duct 5. It may be configured so that it can join the In such a configuration, a valve may be provided upstream or downstream of the filter.

In the embodiment of the present invention, three or four water flow guide plates are used, but a larger number, for example, about 4 to 8, may be provided.

The water flow guide plate is fixed to the top surface of the stirring part formed with a large diameter, and the form of attaching the stirring member has been described. A stirring member may be provided by suspending and fixing it from a member. When the water flow guide plate is not fixed to the top surface of the stirring unit, it is desirable that the top surface of the stirring unit and the upper end of the water flow guide plate contact each other, but a gap may be provided between them.

The air purifier of the present invention is used in industries that manufacture air purifiers.

1, 1A, 1B: air purifier, 2: water tank main body,
3: air intake part, 4: purification duct,
5: discharge duct, 6: pump,
7: injection nozzle, 8, 8A: stirring member,
9: stirring unit, 10, 10A, 10B: recovery means,
11: connection space, 12: water reservoir,
13: bottom plate, 14: bending,
15: water flow guide plate, 16: flow path,
17: recovery hole, 18, 18A: guide member,
19, 19A: recovery part, 20: filtered water supply line,
21: filtering means, 22: circulation path,
23: idling prevention sensor, 24: air introducing means,
25: Collection tube.

Claims (3)

A water tank body having a space in the upper part, a cylindrical purification duct provided in the upper part of the water tank body and having an air intake part at the upper end, and a cylindrical purification duct provided in the upper part of the water tank body and sucked from the air intake part. An air purifying device comprising: a discharge duct for discharging discharged air to the atmosphere; and an injection nozzle connected to the water tank body via a pump and a circulation path connected to the pump for injecting water into the purification duct,
Below the injection nozzle, there is provided a stirring member for further spirally diffusing and stirring the mixed fluid in which the water injected from the injection nozzle and the air sucked from the air suction unit are mixed, A stirring unit having a larger diameter than the upper and lower ends of the purification duct and formed to protrude outward in a flange shape;
The stirring member comprises a circular or polygonal bottom plate against which the water jetted from the jet nozzle collides, and a plurality of curved water flow guide plates erected on the outer periphery of the bottom plate,
The recovery means includes a recovery hole provided on the bottom surface of the stirring unit outside the stirring member, a guide member provided so as to guide the mixed fluid to the recovery hole, and a guide member that communicates with the recovery hole. The guide member collides with the mixed fluid guided by the stirring member and is guided to the recovery hole ,
The guide member is formed in a cylindrical shape with an open bottom and a part of the outer peripheral surface, and the mixed fluid enters through the opening in the outer peripheral surface of the guide member and enters through the opening in the bottom surface of the guide member. An air purifying device that is guided to fall into the recovery hole . 2. The air purifier according to claim 1 , wherein the recovery unit includes filtering means for filtering the mixed fluid, and a filtered water supply line for supplying filtered water filtered by the filtering means to the water tank main body. . 4. The tip end portions of the plurality of water flow guide plates are positioned closer to the tip end portions of the adjacent water flow guide plates than the base end portions of the adjacent water flow guide plates in the radial direction. 3. The air purification device according to claim 1 or claim 2 .

Images