JP2011104359A - Air cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air cleaner having a function of efficiently decontaminating the air over a wide range in a room and continuously used for a long time. <P>SOLUTION: In this air cleaner, ozone, negative ions, and positive ions are individually generated from an air inlet by an ozone generator 2 or the like, and respectively discharged from first, second and third discharge openings 7, 8, 9, and some of the air sucked from the air inlet 1 is guided to a water tank 5. Mist generated from the water tank by a mist generating means 6 is carried through a conduit 7. After the mist is passed through the conduit to be atomized, it is discharged from a fourth discharge opening 11 to be mixed with the ozone, negative ions and positive ions, thereby decomposing, dissolving or neutralizing pollutants in the indoor air to be removed. A negative ion generating discharge device 3 and a positive ion generating discharge device 4 are respectively disposed on the upstream sides of the second discharge opening and the third discharge opening. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an air cleaning device, and in particular, air that can decompose and remove odorous substances in the air, odors of cigarettes, smoke, and the like, and reduce airborne bacteria and bacteria attached to pollution sources. It relates to a cleaning device.

  In recent years, smoking cessation in public facilities, offices, etc. has progressed, and there is a tendency for more buildings that do not allow smoking indoors except in smoking areas. Conventionally, air purifiers installed in smoking areas usually have a filter that adsorbs odorous substances such as cigarette smoke and dust, as well as contaminants such as fungi, viruses, and molds. Is purified by passing it through the filter and discharged through the filter.

However, the filters of air purifiers used in smoking areas are difficult to reuse because they are very dirty, and are usually discarded. It was.
In addition, air purifiers that use filters must be replaced regularly, but when air purifiers are used in places where there are a large number of users, such as public places, the filters need to be replaced in a short time. Therefore, not only the filter replacement cycle is shortened but also the maintenance is complicated.
Furthermore, such an air cleaning device using a filter simply adsorbs and removes pollutants such as odorous substances and bacteria in the air and converts the pollutants themselves into harmless ones. You cannot play to the effect.

  On the other hand, as an air purifying device that reduces odorous substances such as cigarette smoke and airborne bacteria in the room and reduces dust in the air, an air flow path formed between the air inlet and outlet An air cleaning device having a porous tube, which is provided with a catalyst filter for decomposing ozone and has an ozone generation mechanism in the vicinity of the suction port, has been proposed (Patent Document 1). However, in order to sufficiently clean indoor air with a device that purifies air in a limited space in the device, it is necessary to sufficiently convection the indoor air and maintain the ozone generation mechanism. However, there was a drawback that it was complicated.

In order to solve the above-mentioned problems, a device has also been proposed in which positive ions and negative ions are generated from inhaled air by a plasma discharge device, and humidified as necessary to remove indoor odors. (Patent Document 2).
However, since this method allows deodorization only with ions, the effect is not sufficient.

JP 2009-50521 JP 2009-66073 A

Therefore, as a result of intensive studies to further enhance the cleaning effect, the present inventors have found that when the ozone cleaning action is used in combination, the cleaning effect is remarkably increased, and the ozone and ions generated earlier are also increased. It is found that better results can be obtained by mixing with air containing fine water mist and diffusing into the room, and by making it thinner, it can be used as a partition in hospitals etc. The headline and the present invention were completed.
Accordingly, a first object of the present invention is to provide an air purifier having a function of efficiently purifying air over a wide space and capable of continuous use for a long time.
A second object of the present invention is to provide a partition that also functions as an air purifier.

  That is, the present invention relates to an air inlet, an ozone generator, an anion generating air discharge device, a cation generating air discharge device, a water tank, a mist generating means, a pipe having at least one bent portion, a curved portion or a spiral portion. A first discharge port for discharging ozone, a second discharge port for discharging anions, a third discharge port for discharging cations, and a fourth discharge port for discharging particulate mist, Ozone, anion, and cation are individually generated from the air separately sucked from the air suction port by the generator, the anion generating discharge device, and the cation generating discharge device, and the first discharge port, In addition to discharging from the second discharge port and the third discharge port, a part of the air sucked from the air suction port is guided to the water tank through a filter, and the mist generating means removes the air from the water tank. The produced mist is transported through the pipeline, and the mist is atomized by passing through the pipeline, and then discharged from the fourth outlet so as to be mixed with the ozone, the anion, and the cation. An air cleaning device for decomposing, dissolving or neutralizing and removing pollutants in the indoor air, wherein the discharge device for anion generation and the discharge device for cation generation each have a second outlet. And an air purifier arranged on the upstream side of the third outlet, and a partition formed by thinning the apparatus.

In the air cleaning device of the present invention, the first to fourth outlets are arranged such that the cation and ozone are mixed with the anion-containing mist after the anion is mixed with the mist. It is preferable that the air purifying apparatus of the present invention further includes an oxygen-enriched film disposed upstream of the ozone generator.
Further, in the air cleaning device of the present invention, the water used for generating the mist is preferably negatively charged, and means for collecting water droplets adhering to the inner wall of the conduit and returning them to the water tank It is preferable to have.
Furthermore, the air purifying apparatus of the present invention preferably discharges each component so that the mist and the ozone, cation and anion are mixed outside the apparatus near the discharge port.
If the air purifying apparatus of the present invention is configured to be thin, it can function as a partition.

  The air cleaning device of the present invention does not require the use of a filter to remove pollutants, so it can greatly reduce labor and costs related to maintenance such as replacement of consumables and can be used continuously for a long time. In addition, a sufficient air cleaning effect can be achieved even in a large room.

FIG. 1 is a conceptual diagram of the inside of the front of the air cleaning device of the present invention. FIG. 2 is a conceptual diagram of a side cross section centering on the pipe line 7 of the air cleaning device of the present invention. FIG. 3 is a floor plan of a room in which the test of the air cleaning apparatus of the present invention was conducted.

The air cleaning apparatus of the present invention will be described based on examples.
The air cleaning device of the present invention includes an air inlet 1, an ozone generator 2, an anion generating air discharge device 3, a cation generating air discharge device 4, a water tank 5, a mist generating means 6, at least one bent portion, Pipe line 7 having a curved portion or a spiral portion, a first discharge port 8 for discharging ozone, a second discharge port 9 for discharging anions, a third discharge port 10 for discharging cation generation, and a particulate mist Has a fourth outlet 11 (FIG. 1).
The position and shape of the air suction port 1 are not particularly limited, and can be appropriately determined depending on the appearance, size, etc. of the air cleaning device of the present invention.
Ozone is generated from the air sucked from the air inlet 1 by the ozone generator 2, and negative ions and positive ions are generated by air discharge by the air discharge device 3 for generating anions and the air discharge device 4 for generating cations.

As the ozone generator 2 used in the present invention, a known device such as one caused by high voltage discharge or one irradiated with ultraviolet rays can be used. It is necessary to select and control appropriately so that the content does not exceed 0.01 ppm.
In the present invention, the arrangement location of the ozone generator is not particularly limited. However, for the convenience of the arrangement of the air discharge device used for generating anions and cations, which will be described later, it is usually at the approximate center of the air cleaner. is there.

Since anions and cations are easily extinguished by collision, it is necessary to use an air discharge device to generate these ions, avoid collision with obstacles, etc., and quickly discharge them out of the device. Therefore, the air discharge device used for generation of anions and cations needs to be arranged on the upstream side in the vicinity of the anion discharge port 9 and the cation discharge port 10, respectively (FIG. 2).
The structure of the anion and cation generated from the air cleaning apparatus of the present invention is not clear, but since a high voltage is applied to oxygen and hydrogen in the air, anions such as O ₂ ⁻ , OH ⁻ and H ⁺ It is considered that radicals and the like are also generated in addition to the cations.

Further, in the present invention, it is preferable that the oxygen-enriched film 12 is disposed in front of the ozone generator 2 in order to increase the oxygen concentration in the air and efficiently generate ozone. By passing air through the oxygen-enriched film 12, the oxygen concentration can be increased up to about 30% and fine dust in the air can also be removed. The maintenance labor can be reduced.
As the oxygen-enriched film that can be used in the present invention, a known film such as EYVEZ2M to 5M (trade name, manufactured by Panasonic Corporation) can be used.
When the oxygen-enriched film 12 is used, it is preferable to provide a vacuum pump 13 between the oxygen-enriched film 12 and the ozone generator 2 to forcibly suck air.

A part of the air sucked from the suction port 1 is guided to the water tank 5 through the filter 14, and the mist generated from the water tank 5 is conveyed to the pipe line 7 by the mist generating means 6. A fan 15 is usually used for introducing air. The filter 14 may be a coarse filter that can remove dust by washing with water. As the mist generating means, a known means such as a heating means, an ultrasonic wave generating means, a spray means using a compressor, or a combination of these means can be used as appropriate. From the viewpoint of generating, it is preferable to use an ultrasonic generator.
Further, water used for generating mist is stored in a water supply tank 16 installed in the air purifier of the present invention, and a necessary amount is supplied to the water tank 5 by a water supply pump 17. The water supply tank 16 may be directly replenished, but it is preferable that the tank can be replaced.

For example, mist is generated from water stretched in the water tank 5 by a mist generating means 6 such as an ultrasonic element or a heating means. The water used for generating mist is preferably passed through a reverse osmosis membrane to remove impurities such as bacteria and dust, and the water used for generating mist is preferably negatively charged. When negative charge is applied, a fine cluster structure is stably maintained.
Examples of a method of giving a negative charge to water include a method of supplying electrons to a basic aqueous solution.

  Since it is preferable that the mist is atomized and then discharged to the outside of the apparatus, the conduit 7 for introducing the mist needs to have at least one bent portion, a curved portion, or a spiral portion. By doing so, water droplets having a large particle diameter among the mist moving in the pipe line 7 are likely to adhere to the inner wall of the pipe line 7, so that the mist becomes finer. The number of bent portions, curved portions, or spiral portions of the pipe line 7 is not particularly limited, and is preferably large. In addition, if the number of bent portions or the like is increased, the entire length of the pipe line 7 becomes longer, so that the frequency of water droplets colliding with the inner wall of the pipe line 7 during the movement of the mist increases, and the effect of further finer particles is produced.

When a bent portion or the like is provided in the pipeline 7 in this way, a large amount of water droplets adhere to the inner wall of the pipeline 7. Therefore, in the present invention, the water droplets collected on the inner wall of the pipeline 7 are collected for reuse. It is preferable to have a means for returning the water tank 5 to the water tank 5.
As a means to collect | recover, the method of providing the drain which leads to the said water tank 5 or the water supply tank 16 in the bottom face of the pipe line 7 is mentioned, for example.

The ozone, anion, and cation generated in this way are discharged from the first to third discharge ports 8 to 10, respectively, and the finely divided mist is discharged from the fourth discharge port 11. Is done. About each discharge port, it is preferable to install so that a discharge direction can be adjusted independently, respectively. Moreover, the relative positional relationship of each discharge port is not limited to the present embodiment.
When the anion is mixed with the mist simultaneously with the cation or ozone or after the cation or ozone, the air cleaning effect of the anion is impaired. Therefore, the first to fourth outlets 8 to 11 are It is preferable that the anion is mixed with the mist so that the anion is stabilized, and then the cation and ozone are mixed with the mist.

The discharge ports 8 to 11 are arranged inside the apparatus, and mist and anions, and further cations and ozone may be mixed in the apparatus and then discharged outside the apparatus. However, the ions easily disappear due to collision or the like. In consideration of the above, it is preferable to mix the mist with ozone, anions and cations outside the apparatus (FIG. 2).
Exhaust may be performed using a fan or the like as appropriate. The flow rate of the exhaust is preferably about 0.2 m / second, but can be appropriately changed according to the size and shape of the space to be cleaned, the size of the device, and the number of devices to be installed.
The amount of mist ejected is preferably such that the mist is visible within a range of 10 to 20 cm from the outlet, but is not particularly limited thereto.

  The air cleaning device of the present invention can be a thin device such as a partition, for example, about 20 cm or less. Such a device can be installed as a partition in a waiting room of a hospital, for example. Also, in this case, a caster can be attached to the bottom so that the partition can be easily moved. It is also possible to install it so that it can rotate 180 °, further 360 ° on the spot. As a result, the space that can be processed by one unit can be greatly expanded.

The ozone, anion and cation discharged from the air purifying apparatus of the present invention have a long life when mixed with mist, so that they spread throughout the whole room and decompose, dissolve or dissolve pollutants contained in the air. It can be removed by neutralization. Here, the pollutants contained in the air are, for example, aldehydes, ammonia, carbon monoxide, etc. contained in tobacco smoke, paint, spoilage substances, etc., but also fungi, viruses, dust, dust, etc. included.
In the absence of mist, the generated cations and anions are considered to spontaneously change into molecules such as oxygen and hydrogen or water molecules, and as will be apparent from the examples and comparative examples described later, Short lifespan.

In the present invention, since the cation and the anion are mixed with the mist, a cluster structure surrounded by water molecules is formed, and the ions are protected. Therefore, it is considered that the disappearance of the ions due to the collision is suppressed. . In addition, since the water droplets that make up the mist are very small, the mist diffuses sufficiently in the room, and the water volatilizes before the ions disappear, exposing the ions. It is considered that can be exerted over a wide range in the room. Accordingly, a display device is provided at any location on the surface of the air cleaner of the present invention, and an ion detector is appropriately installed in the processing space, and the detection result can be automatically displayed on the display device in real time. It is preferable to do.
EXAMPLES Hereinafter, although an Example demonstrates this invention further in full detail, this invention is not limited by this.

The indoor odor intensity in the examples and comparative examples was evaluated by the “6-level odor intensity display method” which is classified into the following levels.
Odor intensity 0: Does not sense odor.
Odor intensity 1: Perceives odor (threshold or detection threshold).
Odor intensity 2: Know what odor (recognition threshold).
Odor intensity 3: Feels easy.
Odor intensity 4: Strongly felt.
Odor intensity 5: Feels very strong.
The measuring instruments used in the examples and comparative examples are as follows.
[Ion meter]
Air ion counter ITC-201A (trade name, manufactured by Andes Electric Co., Ltd.)
Measuring method Ion mobility conversion method Measuring range 10 ~ 1,236,000 / cc
[Ozone measuring instrument]
Ozone catcher AET-30 (trade name made by New Cosmos Electric Co., Ltd.)
Measurement method Semiconductor thin film sensor Measurement range 0.01 to 1 ppm
Resolution 0.01ppm

In the room shown in Fig. 3 where the air purifying apparatus of the present invention having the structure shown in Fig. 1 is installed, four people smoke in a room with a floor area of 12.93m ² , a ceiling height of 2.4m, and an indoor volume of 31m ^3. Smoked for 90 minutes.
The results of measuring the concentration of anions, cations and ozone in the room while operating the air purifier during smoking are as shown in Table 1 below.

[Comparative Example 1]
The results of measuring the concentrations of anions, cations and ozone in the smoking room in the same manner as in Example 1 except that the air purifier was not operated are as shown in Table 2 below.

[Comparative Example 2]
The results of measuring the concentrations of anions, cations and ozone in the room while smoking and the air purifier were operating were the same as in Example 1 except that the ozone generator of the air purifier was not operated. Three.

[Comparative Example 3]
Table 4 below shows the results of measuring the concentrations of anions, cations and ozone in the room while smoking and operating the air purifier, except that no anions were generated from the air purifier. It is as follows.

[Comparative Example 4]
The results of measuring the concentrations of anions, cations and ozone in the room while smoking and operating the air purifier were the same as in Example 1 except that no cations were generated from the air purifier were as shown in Table 5 below. It is as follows.

[Comparative Example 5]
Except that no mist was generated from the air purifier, the results of measuring the concentrations of anions, cations and ozone in the room during smoking and air purifier operation were the same as in Example 1, and the results are shown in Table 6 below. Street.

In each case of Example 1 and Comparative Examples 1-5, while the smoker A to D smoked for 90 minutes, the non-smoker O-Oki entered the room, and the smoker A to D and the non-smoker O ~ Ki evaluated the intensity of odor in the room. The evaluation results are as shown in Table 7 below.

The results of the above examples and comparative examples demonstrate that the device of the present invention is extremely effective as a device for combating smoking.
In particular, when the generation of mist was stopped, it was confirmed that anions and cations significantly decreased before reaching various places in the room, thereby reducing the air cleaning effect.

  The air cleaning device of the present invention does not require the use of a deodorizing filter, so it does not emit waste and can be used continuously for a long time, and also has a deodorizing and sterilizing effect over a wide range. It is useful for installation in hospitals, hospitals, and other places where fresh foods are handled.

DESCRIPTION OF SYMBOLS 1 Air inlet 2 Ozone generator 3 Air discharge device for anion generation 4 Air discharge device for positive ion generation 5 Water tank 6 Mist generation means 7 Pipe line 8 First discharge port (ozone discharge port)
9 Second outlet (anion outlet)
10 Third outlet (cation outlet)
11 Fourth outlet (mist outlet)
12 Oxygen-enriched membrane 13 Vacuum pump 14 Filter 15 Fan 16 Water supply tank 17 Water supply pump 18 Air purifier 19 Entrance / exit 20 Toilet 21 Ventilation fan 22 Sink 23 Desk 24 Vent 25 Air conditioner

Claims (12)

  Air inlet, ozone generator, air discharge device for anion generation, air discharge device for cation generation, water tank, mist generation means, pipe line having at least one bent portion, curved portion or spiral portion, discharge ozone The ozone generator, the anion, having a first outlet, a second outlet for discharging anions, a third outlet for discharging cations, and a fourth outlet for discharging particulate mist Ozone, anion, and cation are individually generated from the air separately sucked from the air suction port by the generating discharge device and the cation generating discharge device, and the first discharge port and the second discharge port, respectively. And a part of the air sucked from the air suction port is guided to the water tank through a filter, and the error generated from the water tank by the mist generating means. Is transported through the pipeline, and the mist is atomized by passing through the pipeline, and then discharged from the fourth outlet so as to be mixed with the ozone, anion and cation, An air cleaning device for decomposing, dissolving or neutralizing and removing pollutants in indoor air, wherein the anion generating discharge device and the cation generating discharge device have a second discharge port and a third discharge device, respectively. An air purifier arranged on the upstream side of the outlet of the air.   The air purifier according to claim 1, wherein each of the first, second, third, and fourth outlets is configured to independently change a blowing direction.   The said 1st, 2nd, 3rd and 4th discharge port is arrange | positioned so that the said cation and ozone may be mixed with this mist after mixing the said anion with mist. 2. The air purifier described in 2.   The air purifier according to any one of claims 1 to 3, wherein an oxygen-enriched film is further disposed in front of the ozone generator.   The air cleaner according to any one of claims 1 to 4, wherein water used for generating the mist has a negative charge.   The air purifier according to any one of claims 1 to 5, further comprising means for collecting water droplets adhering to the inner wall of the pipe and returning them to the water tank.   The air purifier according to any one of claims 1 to 6, wherein the mist and the ozone, the cation and the anion are mixed outside the device near the discharge port.   Provided with a display device capable of displaying the ion concentration on any surface of the air cleaning device, and a function of wirelessly receiving and displaying the measurement result of the ion concentration measured at an arbitrary measurement location on the display device The air purifier according to any one of claims 1 to 7, which is added.   Furthermore, the air purifier according to any one of claims 1 to 8, further comprising three or more casters at the bottom so that the apparatus can be moved.   The partition according to any one of claims 1 to 9, wherein the partition has a thickness of 20 cm or less.   An air cleaning method that uses ozone, anions and cations to decompose, dissolve or neutralize and remove contaminants in the air, wherein the anions are stabilized by misted water particles, An air cleaning method characterized by being supplied.   The air cleaning method according to claim 11, wherein each of the anion and the cation is an ion obtained by using an air discharge device.

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