JP3340982B2 - Air purifying and deodorizing environmental purifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifying and deodorizing environment purifying machine used for purifying air pollution generated in living environment facilities in human society, such as dust prevention, deodorization, acid gas adsorption, and air sterilization. . Concretely, in all indoor environments where people live or work such as buildings, homes, restaurants, cafes, vehicles, ships, clubs, karaoke houses, barbers, beauty, hospital rooms, kitchen rooms, etc. An air purifying and deodorizing environmental purifier that solves deodorization, air sterilization, acid gas adsorption, etc. and adds a forest bath effect with negative ions, enabling artificial supply of air that was originally brought about by natural purification. About

[0002]

2. Description of the Related Art In order to purify indoor air, a filter is provided in a dust collecting portion by AC or DC pressure increase, and an activated carbon adsorbent or a physical adsorbent is disposed to adsorb odors (1). Alternatively, a known example (2) in which smoke such as cigarettes is collected on a paper filter using a Coulomb effect by DC pressure increase, a small amount of ozone is also generated, and odor is decomposed by the masking effect of ozone, or DC is introduced into the same wind tunnel. There is also a prior application (3) of an air purifier consisting of a combination of a dust collection part by pressurization → an easy-to-clean filter → an ozone concentration detection sensor → an ozone generation part → an ozone deodorization catalyst → an acid gas adsorbent → a scavenging fan Hei 3-289318, Jihei Hei 4-
38674). There are some which can be the basis of chemical deodorization by disposing an ozone generating part, a deodorizing catalyst, and an acidic gas adsorbent (see Japanese Patent Application Laid-Open No. 3-143524). Lack of consideration.

[0003]

As a specific problem, the above-mentioned known example (1) is characterized in that, when activated carbon or a physical adsorbent is used, when the odor adsorption of the carrier is saturated, odor emission is caused again, and the odor is released. A vicious cycle. Known example (2)
Does not provide a scavenging fan and collects dirt on the paper filter by the DC boost coulomb effect.However, because the residual negative ion value is high, the interior wall surface is blackened, the health of the human body is deteriorated due to ionization disturbance, or the low temperature is low. At high humidity, the ozone concentration is high and remains indoors, and the safety of residual ozone is lacking. The above-mentioned prior application (3) solves the above-mentioned known example (2). However, due to the arrangement of the ozone concentration detection sensor, there are many malfunctions due to the influence of miscellaneous gas, especially tobacco odor, and the aging of the catalyst and the like is accompanied. The scavenging ozone concentration cannot be kept below 0.06 ppm.

[0004] With the overcrowding of people and the aging of buildings and condominiums, the indoor space in which people work including the living environment continues to be isolated from the outside air, and infectious microorganisms containing mold, residual odor or bacteria. Air pollution is enormous. In the outside air, NOx and SOx produced by automobile exhaust gas and factories accumulate. In addition, they suffer from hay fever depending on the season, such as adding an odor. Biological odors such as tobacco particles, mold, pet odors, roach of cockroaches, and the like are also promoted in living rooms, which are places for living, and tend to worsen. The present invention provides means for reproducing the purified air originally provided by lush nature, and performing stable and safe dust collection, air sterilization, forest bath effect, deodorization, and acid gas adsorption. It protects air quality.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a dust collecting section using a high-pressure DC Coulomb action, an ozone generating section having a fine ceramic as a dielectric layer,
An ozone deodorizing catalyst, an acid gas adsorbent, and a scavenging fan are installed in order from the air inlet to the air outlet, and an ozone concentration detection sensor is provided at the air outlet to detect the ozone concentration.
Based on the ozone concentration at the air outlet detected by the sensor
The amount of ozone generated in the ozone generator
The gist of the present invention is an air purifying and deodorizing environmental purifier characterized in that the purifier is designed to perform air purifying and deodorizing environmental purifying.

[0006]

In the air purifying and deodorizing environment purifier of the present invention, the power supply specification of the DC high-pressure dust collecting section is set to 6.0 KV step-up at a DC 12 V input and a current value of 70 mA or less. Also, reduce the wind resistance in the DC high-voltage part and the ground electrode part, and use a metal mesh or carbon fiber as the installation electrode and set the distance between them to 20 m / m or less, and set the dust adjacent or above or below the installation electrode metal net. A capture filter is provided. The air flow rate was set to 1.0 m / sec or less, and the capture rate of the dust trapping filter was set to 50% or more. As a result, when smoking a cigarette in a room of 5 tsubo or less, the number of negative ions is counted as 5,000 pieces / cc for 20 minutes, but 260 pieces / cc as the load of smoke and dust decreases.
And stable, comparable to the green suburban value minus the number of ions. Thereafter, the number of negative ions is always constant and stable as long as the indoor dirt load value does not increase.

[0007] Ozone is most effective to decompose and deodorize a double bond that is a source of odor. In addition, odor reaction can be achieved by providing an oxidation catalyst honeycomb mainly composed of manganese (MnO ₃ ). To decompose excess ozone (see Japanese Patent Application No. 1-135352). The ozone generation method uses a fine ceramic as a dielectric layer (Japanese Patent Publication No. 55-37483).
Using a creeping discharger, the dielectric layer is 130 μ or less, and the ozone concentration is 1.0 ppm or less (normal temperature 20 ° C., 60% R
H). In this case, the ozone generation concentration changes depending on the temperature and humidity. Further, the discharge body is heated together with the fact that the fine ceramic itself is hygroscopic, and a heating body at a temperature of 20 ° C. to 30 ° C. from the room temperature is provided (Japanese Patent Application No. 64-3300).
No. 4), ozone generation is easy even in a humid environment, except that the discharge body is not destroyed due to humidity and the gas phase ozone concentration is reduced due to the ozone generation effect in humid conditions. On the other hand, at low temperature and low humidity, the gaseous phase ozone concentration is increased by 1.5 times as compared with that at normal temperature of 20 ° C. and 60% RH. Was. The present invention roughly classifies the indoor environment to be used, and makes it easy to arbitrarily change the driving environment on the driving ozone power supply board in a room that decomposes odors. In addition, the amount of ozone generated in a room to decompose odors is such that the activity of microorganisms including bacteria such as mold is 10 ° C.
Since the heat treatment is carried out at a temperature between 40 ° C. and 10 ° C. or less, an increase in odor is hardly observed. Therefore, in an environment of 10 ° C. or less, the threshold level (knowledge value) of the characteristics of the ozone discharge body made of fine ceramic is determined so that the excitation level changes with temperature, and a slow discharge phenomenon is caused at low temperature and low humidity. (See Table 1 below). This solves the problem of preventing the manganese (MnO ₃ ) catalyst from being deteriorated due to the strong oxidizing property due to ozone enrichment, and has no adverse effect on the human body due to the residual ozone concentration after passing through the catalyst.

[0008] The oxidizing power of ozone is second only to fluorine. Therefore, when gaseous phase ozone is used for chemical deodorization of odors and the like, combustion gas such as heating generated in a living environment and the like, and nitrogen monoxide (NO) and sulfur monoxide (SO) in an automobile exhaust gas from the outside air, It changes to NO ₂ and SO ₂ and impairs human health. Therefore, unless the gas is removed and adsorbed by acidic gas and scavenged as safe air, air purification for the living environment will not be performed (see Table 2 below).

[0009] Dust collection by negative ions, ozone deodorization,
The present invention in which acid gas adsorption is combined is characterized in that the combination is always performed before suction of the scavenging fan, and an ozone concentration detection sensor is provided at the air outlet. This is because the ozone sensor is protected by removing smoke particles and tar from cigarettes, chemical deodorization, and disposing an acid gas adsorbent in order to avoid malfunction of the ozone concentration detection sensor due to miscellaneous gases. It is.
On the other hand, there is no aging in the dust collecting section due to negative ions, but the ozone generating section, the ozone deodorizing catalyst, and the acidic gas adsorbent cause aging. The seasonal indoor environment changes due to the load of pollution and odor depending on temperature and humidity. The ozone concentration detection sensor monitors the air purifying and deodorizing environment purifier to prevent the adverse effects of aging and to constantly monitor the scavenging ozone concentration to be 0.06 ppm or less. 10
Under the environment below ℃, the generation of ozone by the ozone generator is slowed down, the life of the ozone deodorizing catalyst is extended, the compatibility with environmental conditions is brought, and the reliability of ozone emission standards is improved. .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an air purifying and deodorizing environmental purifier according to the present invention will be described in detail using embodiments. FIG. 1 is a schematic view showing one embodiment of an air purifying and deodorizing environmental purifier according to the present invention. The coarse screen 1 removes visible dust in the air. Reference numeral 2 denotes an ion-collecting electrode, 3 denotes a filter, and 4 denotes a DC anode. These are charged with floating cigarette smoke and the like by the DC high-pressure ion effect, and are provided between the DC anode and the fiber filter 3. To make cleaning and replacement easy. Reference numeral 5 denotes a gas-phase ozone concentration and odor reaction mechanism, and by providing an ozone discharger and a diffusion plate 6, the odor and sterilization reaction to the catalyst is made uniform. 7
Is a space for deodorization and sterilization. The uniformized ozone and odor are deodorized and sterilized through the ozone deodorizing catalyst 8, and the excess ozone concentration is eliminated. However, since the ozone deodorizing catalyst always performs oxidation and reduction, the ozone generation cycle repeats ON / OFF for, for example, 5 minutes, and the fan performs continuous scavenging. Reference numeral 9 denotes an acid gas adsorbent which serves to adsorb acidic gases such as NO ₂ and SO ₂ accompanying the oxidation of ozone and serves to decompose excess ozone. In this case, each of the ozone deodorizing catalyst 8 and the acidic gas adsorbent 9 was formed in a honeycomb shape, and the SV value was 30,000 to 100,000- ^h in terms of the combined volume value of the ozone deodorizing catalyst 8 and the acidic gas adsorbent 9. .
Numeral 10 denotes a scavenging fan, which uses a brushless fan having a high static pressure for the purpose of easily receiving wind resistance due to its configuration and securing a predetermined air volume. Reference numeral 11 denotes an ozone concentration detection sensor provided at an air discharge port. The ozone concentration detection sensor 11 detects the ozone concentration of the purified exhaust air after functioning as a sensor filter of each of the parts 1 to 9 to eliminate malfunction of the sensor due to cigarette smoke. Is going. Further, to prevent deterioration of the ozone deodorizing catalyst and the acid gas adsorbent due to aging of ozone purification, the gaseous phase ozone concentration at the air outlet is constantly monitored.
When the emission of 06 ppm or more is observed, the controller 12 has a function of intermittently shortening the ozone generation time.

Table 1 shows the results of dust collection performance using the DC high pressure Coulomb action shown in FIG. 1 and the cleaned indoor environment.
Table 2 shows that the number of negative ions in the suburbs of the natural environment is stabilized.

[Table 1]

[Table 2] From this table, it can be seen that when there is no pollution load in the room, the number of negative ions does not increase and the number of negative ions in the suburbs of the natural environment is stable at 260 / cc. However, the number of ions increases up to 5,000 particles / cc, which is accompanied by the load of particles such as cigarette smoke, and the dust collecting action appears remarkably. Table 1 is clear even in the particle removal time, and the driving current value is 30 mA or more.
Automatic control by load fluctuation within 70 mA.

Ozone generation is easily affected by temperature and humidity. Table 3 shows the change in ozone generation.

[Table 3] Table 3 shows the change in generation due to temperature and humidity at a current value applied to the ozone generator of 70 mA and a scavenging fan air flow of 330 l / min. 20 ° C, 60% in the table
At RH, the gas phase ozone concentration is 0.43 ppm,
At 0% RH, 0.63 ppm, an increase of 46%. When constructing an air purifying and deodorizing environment purifier, the gas phase ozone concentration required for deodorization needs to be around 0.3 ppm, but from the viewpoint of seasonal changes in ozone generation, there is a case where ambient temperature is set at 20 ° C and 0.3 ppm. At 5 ° C., 0.45 ppm, an increase of 50%. At room temperature (18 ° C. to 25 ° C.), there is a biological odor, and ozone deodorization can be performed smoothly. The scavenging ozone concentration can be kept at 0.06 ppm or less, but when the temperature is 10 ° C. or less and the humidity is low, manganese dioxide as a main component (MnO
₃ ) The reactivity of redox deteriorates as the concentration of gas phase ozone increases.

Table 4 shows that the ozone operation is ON / OFF for 3.5 minutes.
Repeatedly, at 20 ° C after installing deodorizing catalyst and acid gas adsorbent,
This shows the scavenging ozone concentration in a 60% RH state.

[Table 4] Table 4 Gas phase ozone concentration is 0.3 ppm (2
(0 ° C., 60% RH), and the SV value by the combination of the deodorizing catalyst and the acidic gas adsorbent was set to 50,000 ^-h, and operated. The initial purification performance is 96%, and 9 hours after 17 hours without any need for decomposition such as odor.
The purification rate drops to 1%. Table 4 shows the measurement of the gas-phase ozone concentration due to the aging effect at normal temperature and normal humidity, but the scavenging ozone concentration does not reach 0.06 ppm. However, in an environment where the low temperature and the low humidity shown in Table 3 continue, the catalyst purification performance is reduced and does not exceed 0.06 ppm without an odor reaction. Table 5 shows the improved ozone generation characteristics of Table 3 described above.

Table 5 shows changes in the gaseous phase ozone concentration at low humidity with temperature.

[Table 5] Ozone generation at 10 ° C. or lower is reduced. This coincides with the generation of a temperature zone accompanying the generation of biological odor, and the generation of ozone itself is shared. Further, the scavenging ozone concentration is reduced to 0.1 without causing deterioration in performance of the catalyst at low temperature and low humidity.
It can be kept below 06ppm.

Next, Table 6 shows the ozone sensor and miscellaneous gas characteristics.

[Table 6] Table 6 shows changes in the output of directly blowing a cigarette into the ozone sensor in terms of gas-phase ozone concentration. An incorrect arrangement of the ozone concentration detection sensor always causes a sensor malfunction shown in Table 6. Therefore, in order to use the ozone sensor for the scavenging ozone concentration, malfunctions can be prevented by using all the members that originally purify the air, such as the dust collector, the ozone deodorizing catalyst, and the acid gas adsorbent, as the ozone sensor filter.

Table 7 shows data obtained by providing an ozone concentration detection sensor at the air outlet.

[Table 7] In the table, (a) indicates the gas-phase ozone concentration of 0.145 ppm and the scavenging air volume 3
Data at 30 l / min are shown. (B) is (a)
Indicates that the concentration of the gaseous phase ozone generated by the control is controlled by an ozone sensor. Therefore, the ozone sensor detects at 0.035 ppm and the ozone operation is ON / OF for 3 minutes and 10 seconds.
Monitor and control the scavenging ozone concentration within the time when the mode is set to F. (C) shows an apparatus in which only the ozone deodorizing catalyst (MnO ₃ ) used in the severe test was loaded into the apparatus, and the ozone leak was controlled by an ozone sensor. It does not exceed 0.06 ppm. (D) is data obtained by aging the same conditions depending on the environmental temperature. (E) shows that the ozone generation slows down when the room temperature becomes 10 ° C. or less.
Indicates that it does not exceed ppm.

Table 8 shows the comparison of other companies in the gaseous phase ozone concentration and the acid gas adsorption data.

[Table 8]

Table 9 shows a schematic diagram of an ozone concentration catalyst and decomposition of malodorous components by ozone.

[Table 9]

Table 10 shows a list of deodorizing test effects.

[Table 10] From the above results, the deodorizing effect of the biological odor by ozone was confirmed.

[0020]

According to the present invention, an air purifying and deodorizing environment that reproduces air that has been purified indoors and can perform dust collection, air sterilization, forest bath effect, deodorization, and acid gas adsorption stably and safely without malfunction. A purifier can be provided. In addition, an ozone concentration detection sensor is provided at the air outlet, and the ozone generation output is controlled via the control unit by monitoring the gas phase ozone concentration on the scavenging fan discharge side with the ozone concentration detection sensor. It is possible to eliminate the malfunction of the ozone concentration detection sensor due to the influence of gas, particularly the odor of tobacco.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an air purifying and deodorizing environment purifying machine according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coarse filter 2 Ion dust collecting electrode part 3 Filter 4 DC anode part 5 Ozone odor reaction mechanism 6 Ozone discharge body and diffusion plate 7 Deodorization / sterilization space 8 Ozone deodorization catalyst 9 Acid gas adsorbent 10 Scavenging fan 11 Ozone concentration detection sensor 12 Control unit

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B03C 3/00-3/88

Claims (1)

(57) [Claims] A dust collecting unit using a high-pressure DC Coulomb action;
Ozone generator for fine ceramic dielectric layer, the ozone deodorizing catalyst, acid gas absorbent and a scavenging fan installed in order from the air inlet to the air outlet, provided the ozone concentration detection sensor to the air outlet, the ozone Density detection sensor
Based on the ozone concentration at the air outlet detected by the
To control the amount of ozone generated in the ozone generator.
Air cleaning deodorizing environment purifier, wherein you have to so that.