JP2021038913A - Air cleaner - Google Patents

Abstract

To provide an inexpensive air cleaner which can remove dust and odors in air efficiently, has a simple structure, and achieves low running costs.SOLUTION: The invention relates to an air cleaner and includes: a storage tank 14 which stores a solution W which takes into dust and odors to remove them; an air introduction passage 16 which introduces air containing dust and odors into the storage tank 14; a filter 18 which is disposed in the solution W and allows the air introduced through the air introduction passage 16 to pass to generate air bubbles B including microbubbles; a suction fan 20 which suctions air through the solution W; and inclined passages 22a to 22c which are disposed between the storage tank 14 and the suction fan 20 and have inclined walls 30, 38, 40 set at an inclined angle θ in a range of 20°<θ<40°relative to a horizontal line and into which the air bubbles B flow.SELECTED DRAWING: Figure 2

Description

The present invention relates to an air purifier that removes dust and odors in the air.

Dust and odor are generated at work sites where various materials are processed and painted. Normally, in order to remove these dusts and odors, air conditioning equipment including an air purifier is installed at the work site. An air purifier is generally configured to take in and remove air containing dust and odor through a filter.

There is known a dust collector having a relatively inexpensive configuration in which air containing dust is brought into contact with water to adsorb dust and the like (see Patent Document 1). In this dust collector, a suction fan is used to bring air containing dust into contact with water stored in a water storage container to adsorb and remove dust and the like.

JP-A-2018-111062

The dust collector according to Patent Document 1 can remove dust having a relatively large mass, but cannot sufficiently remove minute particles having an odor such as paint, so that the odor works. It remains on the site. In this case, in order to completely remove the odor, for example, it is conceivable to arrange an expensive HEPA filter or the like used in a clean room or the like in the front stage or the rear stage of the suction fan. However, in order to maintain the deodorizing effect, the filter must be replaced regularly, which causes a problem that the running cost becomes high.

The present invention has been made to solve the above-mentioned problems, and is an inexpensive air purifier that can efficiently remove dust and odors in the air, has a simple configuration, and can keep running costs low. The purpose is to provide.

The air purifier according to the present invention is arranged in a storage tank for storing a solution for taking in and removing dust and odor, an air introduction path for introducing air containing the dust and odor into the storage tank, and the solution. A filter that passes the air introduced through the air introduction path to generate bubbles containing microbubbles, a suction fan that sucks the air through the solution, a storage tank, and the suction fan. It is characterized by having an inclined wall arranged between the two and set to an inclination angle θ in the range of 20 ° <θ <40 ° with respect to the horizon, and having an inclined passage through which the air bubbles flow.

In the air purifier, the filter includes a first filter having an opening through which the air passes and a second filter having an opening narrower than the first filter, and the air is taken from the first filter. It is characterized in that the bubbles including microbubbles are generated by passing through the inclined passage through the second filter.

In the air purifier, the filter has an opening formed at the downstream end of the air in a direction perpendicular to the flow of the air through which the air passes.
The cross-sectional shape of the opening is a triangle whose apex angle is on the upstream side of the air.
It is characterized in that the air is passed through the inclined passage through the opening to generate the bubbles including microbubbles.

In the air purifier, the angle α of the apex angle is 1 ° <α <15 °.

Further, in the air purifier, the inclined passage is characterized in that a passage for returning the solution to the storage tank after the bubbles have disappeared is formed.

Further, in the air purifier, a defoaming wall for colliding and extinguishing the air bubbles is arranged in the inclined passage on the suction fan side.

Further, in the air purifier, a first mesh member that suppresses the rise of the bubbles is arranged in the vicinity of the defoaming wall.

Further, in the air purifier, a second mesh member that suppresses the rise of the bubbles is arranged between the suction fan and the outlet of the inclined passage.

In the air purifier of the present invention, air is passed through a filter placed in a solution to generate bubbles containing microbubbles, and then the inclination angle θ is set in the range of 20 ° <θ <40 ° with respect to the horizon. Air can be sufficiently brought into contact with the solution by flowing into a sloping passage having a sloping wall. As a result, dust and odor in the air can be efficiently removed. Further, since it can be configured extremely easily without using a special filter, it is possible to provide an inexpensive air purifier while keeping the running cost low.

Further, in the air purifier of the present invention, the filter is formed with an opening having a triangular cross-sectional shape, so that bubbles containing more microbubbles are generated.

It is a perspective view of the air purifier which concerns on embodiment of this invention. FIG. 2 is a sectional view taken along line II-II of the air purifier shown in FIG. It is a perspective explanatory view of the filter which comprises the air purifier shown in FIG. It is sectional drawing of the 1st modification of the air purifier which concerns on embodiment of this invention. It is sectional drawing of the 2nd modification of the air purifier which concerns on embodiment of this invention. FIG. 6A is a side view of the filter of the second modification of the air purifier, FIG. 6B is a front view of the filter of the second modification of the air purifier, and FIG. 6C is the second modification of the air purifier. It is explanatory drawing which enlarged the filter of the modification.

<Configuration of air purifier 10>
Hereinafter, the air purifier 10 according to the embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an embodiment of an air purifier according to the present invention. FIG. 2 is a sectional view taken along line II-II of the air purifier shown in FIG.

The air purifier 10 includes a housing 12 having a substantially rectangular parallelepiped shape. The air purifier 10 is arranged in the storage tank 14 for storing the solution W for taking in and removing dust and odor, the air introduction path 16 for introducing air containing dust and odor into the storage tank 14, and the solution W. A filter 18 that passes air introduced through the air introduction path 16 to generate bubbles containing microbubbles, a suction fan 20 that sucks air through the solution W, and bubbles from the storage tank 14 flow in. It includes a first inclined passage 22a, a second inclined passage 22b, and a third inclined passage 22c.

The storage tank 14 is arranged at the lower part in the housing 12. The housing 12 is formed with a window 24 for confirming from the outside the remaining amount of the solution W stored in the storage tank 14, the degree of contamination, the state of generation of bubbles, and the like. For example, a transparent acrylic plate is installed on the window 24. The solution W stored in the storage tank 14 takes in and removes dust and odor in the air, and can contain, for example, hypochlorous acid having a bactericidal effect in addition to ordinary water.

The air introduction path 16 communicates with the outside through an air introduction port 26 formed on a side portion of the housing 12. The air introduction path 16 has a first partition wall 28 extending vertically downward, and communicates with the storage tank 14 via a first inclined wall 30 connected to the lower end portion of the first partition wall 28.

The filter 18 is connected to the lower end of the first inclined wall 30 and is arranged in the solution W of the storage tank 14 in a substantially horizontal state. As shown in FIG. 3, the filter 18 includes a first filter 18a arranged at the lower part and a second filter 18b arranged at the upper part. The first filter 18a and the second filter 18b have a large number of openings 32a and 32b. The opening 32b formed in the second filter 18b is set to have a narrower opening than the opening 32a formed in the first filter 18a.

The suction fan 20 is arranged at the upper part in the housing 12. An exhaust port 34 for exhausting the air sucked by the suction fan 20 is arranged on the upper part of the housing 12.

The first inclined passage 22a is a second in which a first inclined wall 30 connected to the first partition wall 28 of the air introduction path 16 and a substantially vertical second partition wall 36 arranged near the end of the filter 18 are connected. It is formed between the inclined wall 38 and the inclined wall 38. The second inclined passage 22b is formed between the second inclined wall 38 and the third inclined wall 40 arranged above the second inclined wall 38. The third inclined passage 22c is formed on the upper part of the third inclined wall 40. The first inclined wall 30, the second inclined wall 38, and the third inclined wall 40 are set to an inclination angle θ in the range of 20 ° <θ <40 ° with respect to the horizon.

A third partition wall 42 and a fourth partition wall 25 set in a substantially horizontal state are arranged above the third inclined passage 22c. An outlet 23 of the third inclined passage 22c is formed between the third partition wall 42 and the fourth partition wall 25. The fourth partition wall 25 is supported by the fifth partition wall 27 connected to the housing 12.

The third partition wall 42 is arranged between the third inclined wall 40 and the suction fan 20. At the lower end of the third inclined wall 40, a substantially L-shaped first defoaming wall 46 is arranged via a passage 44. Further, a second defoaming wall 48 extending toward the third inclined wall 40 side is arranged below the third partition wall 42. Therefore, the first inclined passage 22a, the second inclined passage 22b, and the third inclined passage 22c have the first inclined wall 30, the second inclined wall 38, the third inclined wall 40, the third partition wall 42, the fourth partition wall 25, and the first inclined passage 22c. The first defoaming wall 46 and the second defoaming wall 48 form a labyrinth-like passage.

<Operation of air purifier 10>
First, as a preparatory step, the solution W is injected into the storage tank 14 until the filter 18 is below the liquid level of the solution W. In this case, in the state before driving the suction fan 20, the liquid level of the solution W becomes a constant height in the entire area of the storage tank 14.

Next, the suction fan 20 is driven, and air is sucked through the solution W. When the suction is started, the air pressure on the first inclined passage 22a, the second inclined passage 22b and the third inclined passage 22c side becomes lower than the outside air pressure, so that the first inclined passage 22a, the second inclined passage 22b and the third inclined passage 22b The liquid level of the solution W on the inclined passage 22c side becomes higher than the liquid level of the solution W on the air introduction path 16 side. As a result, the air containing dust and odor is introduced into the air introduction path 16 from the air introduction port 26.

The air introduced into the air introduction passage 16 passes through the opening 32a of the first filter 18a arranged at the lower part, then passes through the opening 32b of the second filter 18b arranged at the upper part, and passes through the opening 32b of the second filter 18b arranged at the upper part. It is supplied to 22a, the second inclined passage 22b and the third inclined passage 22c. In this case, since the opening 32a of the first filter 18a is set to have a wider opening than the opening 32b of the second filter 18b, air can easily pass through the first filter 18a. Next, the air that has passed through the first filter 18a passes through the narrow opening 32b of the second filter 18b, so that bubbles B containing microbubbles are generated, and the first inclined passage 22a, the second inclined passage 22b, and the second inclined passage 22b are generated. It is supplied to the three inclined passages 22c. Further, a part of the air introduced into the air introduction path 16 passes under the filter 18 and collides with the second partition wall 36 arranged in a substantially vertical state. As a result, the bubble B containing a large number of microbubbles is supplied to the first inclined passage 22a, the second inclined passage 22b, and the third inclined passage 22c.

Here, since the bubbles B containing a large number of microbubbles are generated in the first inclined passage 22a, the second inclined passage 22b, and the third inclined passage 22c, the air comes into contact with the solution W with an extremely large contact surface area. To do. Therefore, dust and odor in the air are efficiently taken into the solution W. Further, the first inclined wall 30, the second inclined wall 38 and the third inclined wall 40 constituting the first inclined passage 22a, the second inclined passage 22b and the third inclined passage 22c are 20 ° <θ <with respect to the horizon. Since the relatively gentle inclination angle θ in the range of 40 ° is set, the generated bubble B does not disappear for a long time, and the long labyrinth-like first inclined passage 22a, the second inclined passage 22b, and the third inclined passage 22a are set. It slowly rises along the passage 22c. In this case, since the contact time between the bubbles B and the air can be lengthened, dust and odor are sufficiently taken into the solution W and removed. Further, since the inclination angle θ of the first inclined wall 30, the second inclined wall 38 and the third inclined wall 40 is gentle, the suction fan 20 can suck air with a small suction force, and the running cost can be suppressed accordingly. Can be done.

On the other hand, the air bubbles B that have taken in air move to the suction fan 20 side via the first inclined passage 22a, the second inclined passage 22b, and the third inclined passage 22c. In this case, the bubble B is between the L-shaped first defoaming wall 46 arranged at the lower end of the third inclined wall 40 and the second defoaming wall 48 arranged at the lower part of the third partition wall 42. When passing through, they collide with the first defoaming wall 46 and the second defoaming wall 48 and disappear. Further, a third partition wall 42 is arranged between the third inclined passage 22c and the suction fan 20. Therefore, the bubbles B are suppressed from rising by the third partition wall 42 and do not reach the suction fan 20, so that there is no possibility that the operation of the suction fan 20 will be hindered. The solution W generated by extinguishing the bubbles B is returned to the storage tank 14 via the passage 44 formed between the third inclined wall 40 and the first defoaming wall 46, and dust and odor are removed. Will be used again for.

As described above, the air purifier 10 according to the embodiment of the present invention can efficiently remove dust and odor in the air at a low running cost without using an expensive filter. Moreover, since the configuration is simple, it is possible to provide an inexpensive air purifier 10.

Next, a first modification of the air purifier according to the embodiment of the present invention will be described. FIG. 4 is a cross-sectional view of the air purifier 50 according to a modified example of the embodiment of the present invention. In the air purifier 50, the first mesh member 52 and the second mesh member 54 that suppress the rise of the bubble B are formed between the suction fan 20 and the first inclined passage 22a, the second inclined passage 22b, and the third inclined passage 22c. Be placed. The first mesh member 52 is arranged between the first defoaming wall 46 and the housing 12. Further, the second mesh member 54 is arranged between the third partition wall 42 and the fourth partition wall 25. The first mesh member 52 and the second mesh member 54 can be made of, for example, a metal net.

In the air purifier 50 configured as described above, the bubbles B that have risen in the first inclined passage 22a and the second inclined passage 22b pass through the first mesh member 52 arranged in the vicinity of the first defoaming wall 46. At that time, a part of the foam is defoamed and returned to the storage tank 14 as the solution W. Further, the bubbles B that have risen in the third inclined passage 22c without being defoamed are defoamed by the second mesh member 54 arranged at the outlet 23 of the third inclined passage 22c, and are returned to the storage tank 14 in the same manner. Is done. Therefore, the bubbles B generated in the housing 12 are more reliably defoamed, and the bubbles B do not reach the suction fan 20.

Next, a second modification of the air purifier according to the embodiment of the present invention will be described. FIG. 5 is a cross-sectional view of the air purifier 70 according to the second modification of the embodiment of the present invention. FIG. 6A is a side view of the filter of the second modification of the air purifier, FIG. 6B is a front view of the filter of the second modification of the air purifier, and FIG. 6C is the second modification of the air purifier. It is explanatory drawing which enlarged the filter of the modification.

The air purifier 70 is provided with a filter 72 instead of the filter 18 of the air purifier 10. Therefore, the components of the air purifier 70 other than the filter 18 are the same as those of the air purifier 10.

The filter 72 is connected to the lower end of the first inclined wall 30 and is arranged in the solution W of the storage tank 14 in a substantially horizontal state. The filter 72 has an opening 74 through which air passes. The opening 74 is formed at the downstream end of the air introduced into the air introduction path 16 in the direction perpendicular to the air flow. The cross-sectional shape of the opening 74 is a triangle whose apex angle is on the upstream side of the air. The angle α of the apex angle is 1 ° <α <15 °, preferably 2 ° <α <4 °. Further, the forming positions of the openings 74 may be one row in the vertical direction at the end of the filter 72. Further, the cross-sectional shape of the opening 74 may be an isosceles triangle.

In the air purifier 70 configured as described above, the air introduced from the air introduction port 26 passes through the opening 74 through the air introduction path 16. Upon passing through the opening 74, bubbles B containing microbubbles are generated and supplied to the first inclined passage 22a, the second inclined passage 22b, and the third inclined passage 22c. The filter 72 is formed with an opening 74 having a triangular cross-sectional shape, so that bubbles B containing more microbubbles are generated.

The present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention.

In the above-described embodiment, the first mesh member 52 and the second mesh member 54 are provided, but the present invention is not limited to this as long as the rise of the bubble B can be suppressed. For example, only one of them may be provided.

Further, in the above-described embodiment, the filter 72 is provided instead of the filter 18 of the air purifier 10, but the filter 72 may be provided instead of the filter 18 of the air purifier 50.

10, 50, 70 ... Air purifier 12 ... Housing 14 ... Storage tank 16 ... Air introduction passages 18, 72 ... Filter 18a ... First filter 18b ... Second filter 20 ... Suction fan 22a ... First inclined passage 22b ... First 2 inclined passage 22c ... 3rd inclined passage 23 ... outlet 24 ... window 25 ... 4th partition 26 ... air introduction port 27 ... 5th partition 28 ... 1st partition 30 ... 1st inclined wall 32a, 32b, 74 ... opening 34 ... Exhaust port 36 ... Second partition 38 ... Second inclined wall 40 ... Third inclined wall 42 ... Third partition 44 ... Passage 46 ... First defoaming wall 48 ... Second defoaming wall 52 ... First mesh member 54 ... Second mesh member B ... Bubble W ... Solution

Claims (8)

A water tank that stores a solution that takes in and removes dust and odors,
An air introduction path for introducing air containing dust and odor into the storage tank,
A filter arranged in the solution and passing through the air introduced through the air introduction path to generate bubbles containing microbubbles.
A suction fan that sucks the air through the solution,
An inclined passage which is arranged between the storage tank and the suction fan and has an inclined wall set at an inclined angle θ in the range of 20 ° <θ <40 ° with respect to the horizon, and an inclined passage into which the air bubbles flow.
An air purifier characterized by being equipped with. In the air purifier according to claim 1,
The filter includes a first filter having an opening through which the air passes and a second filter having an opening narrower than the first filter, and the air is passed from the first filter through the second filter. An air purifier characterized in that the air purifier is passed through the inclined passage to generate the air bubbles including micro bubbles. In the air purifier according to claim 1,
The filter has an opening formed at the downstream end of the air in a direction perpendicular to the flow of the air through which the air passes.
The cross-sectional shape of the opening is a triangle whose apex angle is on the upstream side of the air.
An air purifier characterized in that the air is passed through the inclined passage through the opening to generate the bubbles including microbubbles. In the air purifier according to claim 3,
An air purifier characterized in that the angle α of the apex angle is 1 ° <α <15 °. In the air purifier according to any one of claims 1 to 4.
An air purifier characterized in that a passage for returning the solution to the storage tank after the bubbles have disappeared is formed in the inclined passage. In the air purifier according to any one of claims 1 to 5.
An air purifier characterized in that a defoaming wall for colliding and extinguishing the air bubbles is arranged in the inclined passage on the suction fan side. In the air purifier according to claim 6.
An air purifier characterized in that a first mesh member that suppresses the rise of the bubbles is arranged in the vicinity of the defoaming wall. In the air purifier according to any one of claims 1 to 7.
An air purifier characterized in that a second mesh member that suppresses the rise of air bubbles is arranged between the suction fan and the outlet of the inclined passage.

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