JPH06165910A - Air cleaner - Google Patents

Abstract

PURPOSE:To remove dust and acidic gas in air and simultaneously to perform safe and complete deodorization and sterilization irrespective of the presence of a person by providing a device for controlling the ozone generation to outside a unit and the air suction to inside the unit by detecting the human body with a human body sensor. CONSTITUTION:An ozonizer 9, a dust collector, an ozone gas-phase concentration sensor 5, an acidic gas adsorptive filter and a suction exhaust fan 8 are arranged in the same air duct and driving power source part is fitted to outside the air duct. On the same base plate, a control part 14 for controlling the ozone generation to outside a unit and the air suction to inside the unit by detecting the human body with a human body sensor is provided. Dust and acidic gas in air are removed. Simultaneously in the case there is a person, air is taken in the unit to perform deodeodorization and sterilization and the cleaned air is discharged and in the case there is not a person, ozone is directly exposed to the environment. Consequently safe and complete deodorization and sterilization are performed.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a restaurant, a coffee shop,
The present invention relates to an air purifier capable of deodorizing, sterilizing, and purifying the environment regardless of the presence or absence of human beings in environments where humans live or work such as clubs, karaoke houses, barber / beauty shops, hospitals, kitchens, and homes.

[0002]

2. Description of the Related Art Conventionally, a deodorizing device or an environmental purifier in which an ozone generator or a dust collector is used alone or a combination of an ozone generator and a catalyst has been developed, and is used in homes, cars, refrigerators, toilets, etc. It is used for deodorization and air cleaning. However, these have only the function of taking in air into the unit to purify the air, decomposing residual ozone by a catalyst, or generating ozone. Therefore, the former is not suitable for use in sterilizing and deodorizing the wall surface and floor surface, and in the latter, because the ozone concentration cannot be controlled, it may have an adverse effect on the human body.
There was a problem of corrosion of metal objects in the room. In addition, even if the ozone concentration is controlled, some people may feel a bad odor or may have an adverse effect on the human body.Therefore, if there is a person, ozone cannot be exposed and sterilization and deodorization cannot be performed. There was a flaw.

[0003]

Therefore, the present invention, in the absence of a person, removes dust, dirt, and acid gas from the air and, at the same time, directly exposes ozone to the environment,
Even if there are people who sterilize and deodorize,
An object of the present invention is to provide a means capable of performing stable and safe sterilization, deodorization, and environmental purification at all times by inhaling air and performing sterilization and deodorization inside the unit.

[0004]

In order to achieve the above object, the present invention has an ozone generator, a dust collector, an ozone sensor, an acid gas adsorption filter, and an intake / exhaust fan arranged in the same wind tunnel, and a drive power supply unit. An air purifier characterized by having a human body detection sensor and a device for controlling ozone generation to the outside of the unit and air intake to the inside of the unit by the human body detection on the same substrate as the above. To do.

[0005]

The air purifier of the present invention always removes dust, dust, cigarette smoke, etc. by the dust collector and acid gases such as NO _X , SO _X, etc. by the acid gas filter, and when there is no person. Sterilizes by ozone exposure, deodorizes, generates ozone inside the unit when there is a person, sterilizes and deodorizes the taken in dirty air, and uses an ozone decomposition catalyst to
By decomposing ozone and releasing clean air, it purifies the air and the environment. In this configuration, a combination of a DC high-voltage ion dust collector and a fiber filter is supplemented so that dust or the like does not adhere to the fan for forcibly moving the air or the protective cap of the ozone sensor unit. The odorous components drifting indoors have the most biological sources, such as floors, walls, and ceilings, and become wandering grounds for cockroaches and mites. Further, in a highly airtight space, mold is generated in relation to humidity. When it comes to cigarette odor, it becomes a lactam-based chemical odor contained in tar, and it is important to capture it in a smoke state. The amount attached to the wall surface is gradually reduced by the ozone exposure effect. When there is no person, ozone is generated in the room, and when the vapor-phase ozone concentration reaches a certain level in the defined space, the ozone sensor immediately operates and stops ozone generation. In this case, the filled ozone gas phase concentration is operated within 40 to 60% of 0.1 ppm indicated by the occupational safety and health standard value, so that the sensor operates at a concentration of 0.06 ppm. Temporarily start and stop in the low concentration area (for example, 0.06p
pmOFF to 0.02ppmON) can be arbitrarily set on the circuit. Further, NO _{x in} the air in the room or the like is composed of NO and NO ₂ , and the ratio of both is approximately 1: 1. Of these, NO is less harmful, but NO ₂ is a toxic substance that is easily dissolved in water and has a characteristic as an acidic gas. Ozone has the ability to convert to NO ₂ as soon as it is mixed with NO. Further, since the ozone generating element itself decomposes and oxidizes a part of N ₂ in the air to generate NO _X because a high voltage is applied to the ozone generating element, a device having an ozone generator is harmful to NO _2. It will increase the ratio.
Therefore, it is necessary to remove NO _x in order to function as an air purifier, and a NO ₂ scavenger is provided as the means. As the NO ₂ scavenger, there are known absorbents such as activated carbons subjected to alkali treatment and iron oxides. NO ₂ as an acid gas absorbent
Although there is a characteristic that NO can be absorbed but NO is not absorbed, since NO in the air is converted to NO ₂ by the ozone generator, NO can be removed by the NO ₂ removing agent. An air purifier that makes use of both the characteristics of ozone and the acid gas remover as described above is a part of the configuration of the present invention, and sterilization by ozone, deodorization, and removal of NO _X are possible regardless of the presence or absence of a person. It was

[0006]

【Example】

Embodiment 1 An embodiment of the air purifier according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic view showing an embodiment of the air purifier according to the present invention. The coarse screen 1 removes visible dust in the air.
Nos. 2 to 4 were electrified by floating cigarette smoke or the like due to the direct current high-voltage ion effect, and were captured by the fiber filter 3 provided between the direct current anode part 4 to facilitate replacement. 5
Is an ozone gas phase concentration sensor, which controls the ozone concentration in the room or the like by the control unit 14 to constantly monitor it. No. 6 adsorbs acidic gas floating in the room and constantly cleans the air. 6
Has a honeycomb shape and has an SV value of 30,000 to 5
It was set to 10,000- ^h . Reference numeral 7 denotes an ozone decomposition catalyst portion, which prevents ozone from flowing back and leaking in the unit. Reference numeral 8 denotes a fan, which is a brushless fan having a high static pressure for the purpose of easily receiving a resistance to the wind and ensuring a predetermined air volume. Reference numeral 9 denotes an ozone generator, which is a ceramic plate having a pair of electrodes attached thereto. A voltage boosted by a controller 14 is applied between the electrodes to generate ozone by silent discharge. Reference numeral 10 denotes a diffusion plate provided to improve ozone diffusion efficiency. Reference numeral 11 is a flow path switching device, which operates the drive motor 12 to switch the flow path of the wind in accordance with the signal sent from the human body detection sensor attached to the control unit 14. Reference numeral 13 is an ozone decomposition catalyst portion similar to 7, which is for sterilizing and deodorizing the inside of the unit and then decomposing residual ozone to produce clean air. As an operation method, a human body detection sensor provided on the control unit 14 is used, and by detecting the presence or absence of a person, 12 drive motors are activated, and 11
Move the channel switching device of
Perform sterilization and deodorization inside the unit. FIG. 3 shows the results of controlling the indoor ozone concentration by the ozone sensor and the human body detection sensor. 0.02-0.06 if no one is present
When there is a person in ppm, the ozone concentration can be controlled to 0. Table 1 shows a comparison of the concentration of nitrogen oxides discharged from the air purifier when the acid gas adsorbent shown in FIG. 1 is incorporated and when the acid gas adsorbent is removed. When the adsorbent is not used, NO is decreased as compared with the concentration of the inlet gas, but harmful NO ₂ is greatly increased.
This is because NO is converted to NO ₂ by ozone, and nitrogen oxides are generated in the ozone generation section. At this time, it was confirmed that when an acidic gas adsorbent was attached as in the present invention, both NO and NO ₂ were reduced.

[Table 1] The deodorizing effect according to the present invention will be described. Tables 2 to 5 show the results of performing the deodorizing effect using this device shown in FIG.

[Table 2]

[Table 3]

[Table 4]

[Table 5] From the above results, it was confirmed that the air purifier of the present invention has a deodorizing effect on biological odor regardless of the presence or absence of a person.
The sterilizing effect of the present invention will be described. The execution results of the sterilization effect using the present device shown in FIG. 1 are shown in FIGS. From the above results, it was confirmed that the air purifier of the present invention has a bactericidal effect against falling bacteria regardless of the presence or absence of a person, but the adherent bacteria have a bactericidal effect when no person is present. However, when there is a person, there is not much sterilizing effect when the person is in the measurement room, but since there is a sterilizing effect in the absence of people, the sterilizing effect can be obtained by continuous operation for several days. It was confirmed that there is.

Second Embodiment FIG. 8 shows another embodiment according to the present invention.
Reference numeral 15 is an ozone decomposition catalyst, and 16 is an ozone generator. When there is no person, ozone is generated in the ozone generating section 16 and exposed to ozone in the room. When there is a person, ozone is generated in the ozone generating section 9 and the dirty air taken in from the top of the unit is removed. It sterilizes and deodorizes, decomposes ozone with 15 ozone decomposition catalysts, and releases clean air. Others are the same as in FIG. As a result of performing the deodorizing effect and the sterilizing effect using this device shown in FIG. 8, it was confirmed that the air purifier of the present invention has the deodorizing effect and the sterilizing effect as in the first embodiment.

Third Embodiment FIG. 9 shows another embodiment according to the present invention.
Using the human body detection sensor provided in the control unit on 14
When no person is present, ozone is exposed through the flow path indicated by the thin line in the figure, and when there is a person, clean air is discharged through the flow path indicated by the thick line in the figure. 1 is the same as that of FIG. 1 except that 1 coarse screen, 2 DC high-voltage ion generator, 3 fiber filter, and 4 DC anode are mounted on the top and bottom of the device. As a result of performing the deodorizing effect and the sterilizing effect using the present device shown in FIG. 9, the air purifier of the present invention is the same as in Example 1.
It was confirmed that it has a deodorizing effect and a bactericidal effect.

[0007]

According to the present invention, the ozone generator, the dust collector, the ozone sensor, the acid gas adsorption filter, and the intake / exhaust fan are arranged in the same wind tunnel, and the driving power supply unit is attached to the outside of the wind tunnel. , A human body detection sensor and a device that controls the generation of ozone to the outside of the unit and the intake of air to the inside of the unit by human body detection,
(EN) An air purifier that constantly removes dust and acid gas and can perform deodorization and sterilization stably and safely regardless of the presence of people.

[0008]

[Brief description of drawings]

FIG. 1 is a simplified drawing of an air purifier of the present invention.

FIG. 2 shows the opening / closing positions of the flow path switching device of FIG. 1 for ozone exposure and clean air release.

FIG. 3 is a result of controlling indoor ozone concentration by an ozone sensor and a human body detection sensor.

FIG. 4 is a result of carrying out a bactericidal effect of falling bacteria by the air purifier of the present invention.

FIG. 5 is a result of carrying out a bactericidal effect of falling bacteria by the air purifier of the present invention.

FIG. 6 is a result of carrying out a bactericidal effect of adherent bacteria by the air purifier of the present invention.

FIG. 7 is a result of carrying out a bactericidal effect of adherent bacteria by the air purifier of the present invention.

FIG. 8 is a simplified drawing of the air purifier of the present invention.

FIG. 9 is a simplified drawing of an air purifier of the present invention.

[Explanation of sign]

 1 Coarse Screen 2 DC High Pressure Ion Generator 3 Fiber Filter 4 DC Anode 5 Ozone Sensing Sensor 6 Acid Gas Adsorber 7 Ozone Decomposition Catalyst 8 Fan 9 Ozone Generator 10 Diffuser 11 Flow Switch 12 Drive Motor 13 ozone decomposition catalyst section 14 control section 15 ozone decomposition catalyst section 16 ozone generation section

Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI Technical display location B03C 3/02 C 8925-4D 3/14 ZAB A 8925-4D

Claims (4)

[Claims] 1. An ozone generator, an ozone sensor, a dust collector,
When an acid gas adsorbent, an ozone decomposition catalyst, an intake / exhaust fan, and a human body detection sensor are in the same wind tunnel, and the human body detection sensor detects the presence or absence of a human body, ozone is exposed to the outside of the unit to sterilize and deodorize. When there is a person, the air purifier has the function of sterilizing and deodorizing with ozone inside the unit and releasing clean air after ozone decomposition. 2. In the air purifier, two ozone generators are installed before and after an ozone decomposition catalyst, and are sterilized and deodorized by ozone exposure to the outside of the unit, and sterilization and deodorization by ozone inside ozone. The air purifier according to claim 1, wherein the ozone generating portion is divided according to time. 3. The air purifier according to claim 1, wherein one ozone generator is installed, the exhaust passage is divided into two, and when there is a person, the ozone is decomposed through an ozone decomposition catalyst to clean air. The air purifier according to claim 1, further comprising an exhaust path switching device that releases the ozone and exposes ozone through a path without an ozone decomposition catalyst when there is no person. 4. The air purifier according to claim 1, wherein an ozone decomposing catalyst, an ozone generator, and a fan are installed in this order, and when there is no person, the intake / exhaust path is the ozone decomposing catalyst, the ozone generator, and the fan. Operate the fan to expose ozone, reverse the operation of the fan when there is a person, and reverse the intake / exhaust path that releases clean air after ozone decomposition as the intake / exhaust path of the fan, ozone generator, and ozone decomposition catalyst. The air purifier according to claim 1, wherein