JPH1151430A - Table type air purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove floating bacteria, virus, and odors. SOLUTION: On the top of a main body 1, a table 2 is provided, and at the center or in the vicinity of the center of the table 2, a suction port 3 is provided, and dust and dirt are collected by providing a dust-collecting part 5 on the downstream side of the suction port 3, and in addition, a photocatalyst filter 6 and a sterilizing lamp 7 are provided, and an OH radical and a super oxide ion are generated by the radiation of the sterilizing lamp 7 to perform a sterilization and a deodorization, and air is discharged to the atmosphere by an electric fan 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table type air purifier having a movable dust collecting, sterilizing and deodorizing function among various types of air purifiers.

[0002]

2. Description of the Related Art Conventionally, there have been the following types of air purifiers. First, there is an air purifier called a ceiling mounted type, which is buried in the ceiling to suction and clean indoor air, and was an air purifier suitable for a relatively large room. In addition, there have been various types of air purifiers such as a ceiling-hanging type, a wall-hanging type, and a wall-mounting type. 2. Description of the Related Art In recent years, mobile table-type air purifiers have begun to appear as measures against cigarette smoke in office floors, smoking rooms, hotel lobbies, and the like. The characteristics of this table type air purifier are, first of all, a mobile type, and since it is a mobile type, it can be transported to a required place and operated there, which is very convenient. Secondly, the fixed type air purifier has the disadvantage that the larger the room, the farther away from the source of smoke, the lower the cleaning efficiency. Because of the advantage of being able to move, it is possible to purify smoke in the immediate vicinity of the source of smoke, so the cleaning effect appears quickly, thereby saving energy in line with the social demands of not using extra power It is also very useful. Explaining how to use this table-type air purifier, smokers gather around the table-type air purifier to have business talks, etc. Smokers' cigarette smoke could be cleaned from a short distance during business meetings and breaks. The upper table of this table type air purifier is provided with a hole for sucking smoke, and it is a structure that sucks cigarette smoke from here, so the distance between the source of smoke and the suction port is short, so the cleaning effect is very large. The result was good.

[0003]

In any of the conventional types of air purifiers, air has only been purified by adsorbing and purifying fine particles such as dust and smoke in the air.
In recent years, functions of sterilization and deodorization have been demanded from social needs. Until then, it had only removed particles and the like, so even if there was no dust in the clean air, the odor could not be eliminated. Although many bacteria and viruses are trapped in the dust collecting portion, the untrapped components are returned to the room as live bacteria, which is not preferable. In view of this deodorization, air purifiers with adsorption type deodorizing function such as activated carbon were sold.However, this activated carbon adsorption type deodorization method adsorbs odor molecules to the deodorizing material as deodorization continues. Therefore, there is a drawback that clogging occurs and the deodorizing efficiency is reduced, and labor and cost for replacing the deodorizing filter are required. Furthermore, not only the clogging of the deodorizing filter, but also the deodorization failure due to the re-release of the odorous molecules has occurred. Not only that, but the replacement of the deodorizing filter causes the deodorizing filter to be discarded as garbage, which poses a problem in terms of environmental conservation. Also,
Bacteria and viruses survive in the dust collection area, and they also multiply, causing a great problem in terms of hygiene. In order to solve this drawback, an ultraviolet sterilization method was developed.The principle is that bacteria and viruses are adsorbed to the dust collecting section together with the adsorbed fine particles, and the bacteria are killed by irradiating ultraviolet rays to inactivate the viruses. Although the efficiency of sterilization and inactivation of adsorbed bacteria and viruses is high, bacteria and viruses that have escaped adsorption in the dust collecting section move with the flowing air, so that the time of exposure to ultraviolet rays is very short. Since the time is limited, a sufficient sterilization effect cannot be expected.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, in an air purifier provided with a suction port on its upper surface for sucking air and suctioning and discharging with an electric fan, a suction port of the table is driven by the electric fan. Smoke and contaminated air are sucked in from and lead to the dust collection section. The dust collecting section collects smoke and fine particles floating in the contaminated air, and adsorbs bacteria and viruses. Bacteria and viruses adsorbed on the dust collection part are alive without dying. These bacteria and viruses are not killed just because they are adsorbed to the dust collecting plate that composes the dust collecting part.If they continue to be adsorbed, they will not cause harm. There is a possibility that the bacteria will be released from the air and fly back into the air. Therefore, it is only necessary to put a germicidal lamp on the dust collecting plate to sterilize the bacteria and inactivate the virus while being adsorbed and held in the dust collecting part. If a method of sterilization and inactivation while being adsorbed to the dust collecting plate is adopted, there are the following advantages.
It is known that the greater the irradiation of a germicidal lamp, the higher its ability to kill bacteria and viruses floating in the air. Requires the use of a germicidal lamp having a strong germicidal power, which has the disadvantage of high germicidal lamp and power costs. Bacteria and viruses adsorbed on the dust collecting plate of the dust collecting section are sterilized and inactivated and become harmless,
Bacteria and viruses that escaped the adsorption move with the air and are hard to kill for the above reasons. In one test, about 2
There is data that 0% of bacteria and viruses escape from adsorption in the dust collecting part. Therefore, as a method of increasing the efficiency of sterilization and inactivation, a method of providing a photocatalyst filter downstream of the dust collecting portion is adopted. The principle is that, when ultraviolet light irradiated from a germicidal lamp is applied to the surface of the photocatalytic filter, OH radicals and superoxide ions are generated to sterilize and inactivate and deodorize. By using the photocatalyst in this way, the target bacteria are killed and the virus is inactivated,
Furthermore, deodorization can be performed. This photocatalyst filter has sterilization and deodorization ability by itself, but there is a disadvantage that efficiency decreases if sterilization and deodorization are continued, but sterilization and deodorization are repeated forever because this ability is regenerated when irradiated with ultraviolet rays There is an advantage that you can.
Here, it is not limited to a germicidal lamp as a device that irradiates the photocatalytic filter to generate OH radicals and superoxide ions.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIG. A table (2) on the upper surface of the body (1) of the air purifier
And a suction port (3) at or near the center of the table (2). The contaminated air is taken into the main body (1) from the suction port (3) by using the suction force of the electric fan (4), and the contaminated air is collected in the dust collecting portion (5) by dust or fine particles floating in the air. Bacteria, viruses, etc. are adsorbed to the dust collecting plate.
The dust collecting section (5) uses an electric dust filter that adsorbs dust and fine particles, but a pre-filter can be added as needed to remove large dust. Not all bacteria and viruses are adsorbed and removed in the dust collecting section (5). A photocatalytic filter (6) is provided downstream of the dust collecting part (5), and bacteria and viruses that have passed through the dust collecting part (5) advance into the photocatalytic filter (6). The photocatalyst filter (6) is irradiated with ultraviolet rays from the germicidal lamp (7), so that the surface of the photocatalyst filter (6) is in an excited state and electrons are ejected from the surface, thereby reacting with oxygen molecules near the surface to generate superoxide ions. The generated holes below the photocatalyst surface react with OH groups to generate OH radicals. These two types of radicals are widely known as having a bactericidal effect and a deodorizing effect. This photocatalyst filter has sterilizing and deodorizing ability even without irradiation with ultraviolet rays. However, if sterilizing and deodorizing are continued, the efficiency decreases, and eventually the ability reaches the limit and sterilization and deodorizing cannot be performed. However, when irradiated with ultraviolet rays, this ability is regenerated, so that sterilization and deodorization can be repeated forever. Furthermore, the principle of deodorization is based on the fact that CH3S
H (methyl mercaptan), TIO2 as an example of a photocatalyst
(Titanium oxide). FIG. 2 shows the principle of this reaction. The air thus cleaned by the dust collecting effect in the dust collecting part (5), the sterilization and inactivation by the photocatalytic filter (6) and the deodorizing effect is discharged into the atmosphere from the exhaust port (8) of the main body (1). . As shown in FIG. 4, this usage situation is as follows. Tobacco smoke (10) generated from a smoker sitting on a chair is sucked together with air from the suction port (3) of the table type air purifier, and inside the main body (1). It shows a state where dust is collected, sterilized, deodorized, and exhausted from the exhaust port (8). As can be easily understood from FIG. 4, the cleaning effect is high because the distance between the cigarette (9) and the suction port (3) is short.

A second embodiment of the present invention will be described with reference to FIG. The second embodiment of the present invention has a structure based on the first embodiment. However, since the germicidal lamp (7) of the first embodiment is located in the flow path of the sucked air, the germicidal lamp (7) is used. Is a resistance to the flow of air, resulting in a reduction in the flow velocity of the air. For this reason, the efficiency of the electric fan (4) is reduced, so that the germicidal lamp (7) is embedded in the side wall of the air flow path. When the germicidal lamp (7) is embedded in the wall in this manner, there is no air resistance and the air can be easily exhausted from the exhaust port (8) by the electric fan (4).

[0007] The germicidal lamp described in the above embodiment is
It is not necessarily limited to this. It is necessary to irradiate ultraviolet rays to generate OH radicals and superoxide ions on the surface of the photocatalyst filter (6). As a means for generating the ultraviolet rays, an ozone lamp, a black light or the like can be used in addition to a germicidal lamp. Further, the object can be achieved not only by lights but also by a device that generates ultraviolet rays.

A third embodiment of the present invention will be described with reference to FIG. FIG. 5 shows a counter-type air purifier in which a counter (11) is attached instead of the table (2) of the table-type air purifier of the first embodiment. It is the same as a purifier, but it is characterized in that it is longer in the vertical direction than the table type from the functional aspect. The figure shows the smoking situation of a standing smoker. Tobacco smoke (10) generated from a cigarette (9) is sucked together with air from a suction port (3) of a counter-type air purifier, and the main body (1) is smoked. 3) shows a state in which dust is collected, sterilized, deodorized and exhausted from the exhaust port (8). This figure 5
However, as will be easily understood, since the distance between the cigarette (9) and the suction port (3) is short, the cleaning effect is high.

A fourth embodiment of the present invention will be described with reference to FIG. Table type in which the positions of the dust collector (5), the photocatalyst filter (6), and the germicidal lamp (7) are arranged in the order of the dust collector (5), the germicidal lamp (7), and the photocatalytic filter (6) from the upstream side. Alternatively, it is a counter type air purifier. By arranging in this manner, ultraviolet rays generated by the germicidal lamp (7) are irradiated to the dust collecting part (5) for sterilization, and further, the photocatalytic filter (6)
The effect of two birds with one stone that sterilization and deodorization are performed by irradiating the water.

[0010]

According to the present invention, a table (2) is provided on an upper part of a main body (1) of an air purifier, a suction port (3) is provided at or near the center of the table (2), and an electric fan (4) is provided. )
The contaminated air is taken into the main body (1) by the suction force of. Further, a dust collecting portion (5) for adsorbing fine particles such as dust is provided downstream of the suction port (3) inside the main body (1), where the fine particles such as dust are adsorbed. The dust collecting portion (5) has an effect of absorbing and removing not only dust but also bacteria and viruses. A photocatalyst filter (6) and a germicidal lamp (7) are provided downstream of the dust collecting part (5). When the ultraviolet light emitted from the germicidal lamp (7) irradiates the photocatalytic filter (6), OH radicals and superoxide ions are generated on the surface to sterilize bacteria, inactivate viruses, and various oxidizable. Deodorizes odors. The clean air thus collected, sterilized, and deodorized is discharged into the atmosphere from the exhaust port (8) of the main body (1) by the electric fan (4). In this way,
A table-type or counter-type air purifier capable of collecting, sterilizing, and deodorizing contaminated air is provided.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a reaction principle diagram showing the deodorizing decomposition of the present invention.

FIG. 3 is a sectional view showing a second embodiment of the present invention.

FIG. 4 is a diagram showing a use situation of the first embodiment of the present invention.

FIG. 5 is a diagram showing a usage state of a third embodiment of the present invention.

FIG. 6 is a sectional view showing a fourth embodiment of the present invention.

[Explanation of symbols]

 1 ··· Main body 2 ··· Table 3 ··· Suction port 4 ··· Electric fan 5 ··· Dust collecting part 6 ··· Photocatalytic filter 7 ··· Sterilizing lamp 8 · ... Exhaust port 9 ... Tobacco 10 ... Tobacco smoke 11 ... Counter

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B03C 3/02 B03C 3/02 B B01D 53/36 HJ

Claims (5)

[Claims] 1. An air purifier having a built-in electric fan and a dust collecting unit in a main body, wherein a table is provided on an upper surface of the main body.
A table type air purifier provided with a dust collecting, sterilizing, and deodorizing function including a suction port provided at or near the center of the table, a dust collecting section provided downstream of the suction port, and a photocatalyst filter and a germicidal lamp. 2. The table-type air purifier according to claim 1, wherein a germicidal lamp is provided on a wall surface inside the main body. 3. A table type air purifier according to claim 1, wherein a lamp or a device for irradiating ultraviolet rays is used instead of the germicidal lamp. 4. The table-type air purifier according to claim 1, wherein a dust collecting section, a germicidal lamp, and a photocatalytic filter are arranged in this order in the flow path of the contaminated air. 5. A counter type air purifier according to claim 1, wherein a counter is used instead of the table.