JPH0722681B2 - Ozone extinction device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ozone extinguishing device, and more particularly, to contact ozone with a catalyst layer for ozone decomposition and to irradiate at least one of ultraviolet rays and infrared rays for ozone decomposition to accelerate the decomposition of ozone. The present invention relates to an ozone extinguishing device configured as described above.

[0002]

Ozone generated by an ozonizer is used for various purposes such as sterilization. After use, ozone is conventionally removed by a paper filter or activated carbon.

[0003]

However, the paper filter and the activated carbon have to be replaced after being used for a certain period of time, which has a drawback that the consumables need to be replaced and the running cost thereof is high. In particular, activated carbon has a risk of exploding when absorbing ozone. Furthermore, it was difficult for both of them to freely control the degree of ozone extinction.

The present invention is intended to solve the above-mentioned problems of the prior art, and its purpose is to eliminate the need for exchanging consumables such as paper filters and to be safe, and to the extent of eliminating ozone. An object of the present invention is to provide an ozone extinguishing device that can freely control the temperature.

[0005]

In order to achieve the above object, an ozone extinguishing apparatus according to the present invention comprises a first substrate, a second substrate and a light source section, and is provided on the first substrate and the first substrate. The catalyst layers for ozone decomposition are formed on the two substrates,
The first so that these catalyst layers face each other at a predetermined interval.
And a second substrate are arranged to form a gap for ozone passage sandwiched between the catalyst layers, and at least ultraviolet rays and infrared rays for ozone decomposition from the light source unit are directed toward the gap. One of the electrodes is arranged between the first substrate and the catalyst layer and the second substrate and the catalyst layer, and an AC voltage is applied between these electrodes. Configured as The catalyst layer for ozone decomposition is formed of, for example, manganese oxide (MnO ₂ ). Regarding the ultraviolet rays to be applied, the wavelength thereof is a particular problem. That is, ultraviolet rays having a wavelength of 300 nm or more have an ozone decomposition promoting effect, and have a wavelength of 240 to 300 n.
Irradiation with ultraviolet rays within the range of m results in promoting the production of ozone. Therefore, ultraviolet rays having a wavelength of 300 nm or more are applied to the gap for passing ozone.

In the light source unit, a pair of substrates having electrodes are arranged to face each other at a predetermined interval, and an ultraviolet gas and an infrared gas are generated in a space formed by hermetically sealing the peripheral edges of the substrates. Encapsulating at least one of
It is formed so as to irradiate at least one of ultraviolet rays and infrared rays by applying an AC voltage between the electrodes, and by changing the frequency of the AC voltage applied between the electrodes, It is configured to be adjustable.

[0007]

Function: Ozone (O ₃ ) naturally decomposes into oxygen (O ₂ ) at room temperature, but as described above,
Decomposition of ozone is promoted by guiding the ozone into a gap for passing ozone sandwiched between the catalyst layers for ozone decomposition and bringing the ozone into contact with the catalyst layer.

Also, between the first substrate and the catalyst layer and the second
By disposing electrodes between the substrate and the catalyst layer and applying an AC voltage between these electrodes, the ozone passing through the gap can be vibrated to improve the contact efficiency with the catalyst layer, As a result, the decomposition of ozone is further promoted.

Further, by irradiating the ozone introduced into the ozone passing space with the ultraviolet ray having the predetermined wavelength as described above, the decomposition of ozone is photochemically promoted and the infrared ray is irradiated. This promotes the thermochemical decomposition of ozone.

The light source unit comprises a pair of substrates having electrodes arranged opposite to each other with a predetermined gap therebetween, and an ultraviolet generating gas and an infrared generating gas inside a space formed by hermetically sealing the peripheral edge of the substrates. When at least one of the electrodes is sealed and an AC voltage is applied between the electrodes, plasma discharge generated between the electrodes causes at least one of ultraviolet rays and infrared rays to be emitted from the gas. By changing the frequency of the AC voltage applied between the electrodes, the amount of ultraviolet rays and infrared rays to be irradiated can be adjusted, and the degree of decomposition of ozone can be adjusted freely.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the illustrated embodiments. As shown in FIG. 1, an ozone extinction device 1 according to the present invention comprises an upper catalyst substrate 2, a decomposition light source 3 and a lower catalyst substrate 4. The upper catalyst substrate 2 has a support member 5,
5 disposes and is fixed above the disassembly light source 3 with a predetermined interval. In addition, the lower catalyst substrate 4 is also arranged and fixed below the decomposition light source 3 with a predetermined space by a supporting member (not shown). As a result, an upper ventilation gap 6 and a lower ventilation gap 7 are provided between the upper catalyst substrate 2 and the decomposition light source 3 and between the decomposition light source 3 and the lower catalyst substrate 4, respectively.
Is formed.

As shown in FIG. 2, the upper catalyst substrate 2 includes a first substrate glass 8, a plurality of first electrodes 9 arranged on the lower surface of the first substrate glass 8, and a plurality of first electrodes 9 disposed on the lower surface of the first substrate glass 8. The first dielectric layer 10 covers the first electrode 9 and the first catalyst layer 11 that restores the lower surface of the first dielectric layer 10.

The decomposition light source 3 has a second substrate glass 12 and a third substrate glass 13, and the second substrate glass 12
A plurality of second electrodes 14 are arranged on the upper surface of the second dielectric layer 15, a second dielectric layer 15 is formed so as to cover the second electrodes 14, and the second dielectric layer 15 is formed on the upper surface of the second dielectric layer 15. The second catalyst layer 16 is formed. Further, a plurality of third electrodes 17 are arranged on the lower surface of the second substrate glass 12, and a third dielectric layer 18 is formed so as to cover the third electrodes 17, A first protective film layer 19 is formed on the lower surface of the third dielectric layer 18.

On the other hand, a plurality of fourth electrodes 20 are provided on the upper surface of the third substrate glass 13, and a fourth dielectric layer 21 is formed so as to cover the fourth electrodes 20. And
A second protective film layer 22 is formed on the upper surface of the fourth dielectric layer 21. In addition, on the lower surface of the third substrate glass 13,
A plurality of fifth electrodes 23 are arranged, a fifth dielectric layer 24 is formed so as to cover the fifth electrodes 23, and a lower surface of the fifth dielectric layer 24 is provided with a first dielectric layer 24. 3 catalyst layers 25
Is formed.

Then, the peripheral portion below the second substrate glass 12 (to be exact, the lower surface of the first protective film layer 19) and above the third substrate glass 13 (to be exact, the second protective film layer 19). Two
The upper surface of 2 is a sealing member 26 such as frit glass.
Is hermetically sealed by. Since the sealing material 26 also functions as a spacer, a space portion 27 is formed between the second substrate glass 12 and the third substrate glass 13. The inner wall surface of this space 27 is coated with a fluorescent material for generating ultraviolet rays having a wavelength within a certain range. Further, inside the space 27, after vacuum processing, helium (He), neon (Ne), xenon (Xe)
Inert gas such as is sealed.

The lower catalyst substrate 4 is the fourth substrate glass 28.
A plurality of sixth electrodes 29 arranged on the upper surface of the fourth substrate glass 28, and a sixth electrode 29 for covering the sixth electrodes 29.
And the fourth catalyst layer 31 covering the upper surface of the sixth dielectric layer 30.

The above-mentioned first substrate glass 8 and second substrate glass 8
The substrate glass 12, the third substrate glass 13, and the fourth substrate glass 28 are formed of soda lime glass having a thickness of 0.15 to 0.5 mm. Also, the first electrode 9,
The second electrode 14, the third electrode 17, the fourth electrode 20, the fifth electrode 23, and the sixth electrode 29 are each formed of tin oxide (SnO ₂ ) or ITO (indium tin oxide). , A band-shaped transparent electrode having a thickness of 100 to 250 nm, and connected to an external electrode through a terminal portion (not shown) formed of silver / palladium (AgPd) or the like. The first dielectric layer 10, the second dielectric layer 15, the third dielectric layer 18, the fourth dielectric layer 21, the fifth dielectric layer 24 and the sixth dielectric layer 30 are Transparent lead oxide (Pb
O ₂ ). The first catalyst layer 1
1, the second catalyst layer 16, the third catalyst layer 25, and the fourth catalyst layer 31 are made of transparent manganese oxide (MnO ₂ ), respectively.
And the thickness is 150 to 250 nm.
The first protective film layer 19 and the second protective film layer 22 are made of magnesium oxide (M
gO) and its thickness is 150 to 2
It is 50 nm.

The ozone can be decomposed into oxygen by guiding the ozone to the upper ventilation gap 6 and the lower ventilation gap 7 of the ozone extinguishing apparatus 1 having the above-described structure and passing the ozone therethrough. That is, although ozone is naturally decomposed into oxygen at room temperature, manganese oxide (MnO ₂ ),
It has the property that the decomposition reaction of the solid catalyst such as lead oxide (PbO ₂ ) and soda lime glass proceeds particularly quickly. Therefore, when ozone passes through the upper ventilation gap 6 and the lower ventilation gap 7, the first catalyst layer 11 made of manganese oxide (MnO ₂ ) is formed.
The contact with the fourth catalyst layer 31 promotes its decomposition. Further, not-shown defective portions (fine holes) existing on the surfaces of the first to fourth catalyst layers 11 to 31.
The ozone that has penetrated from the inside to reach the next layer is also the first dielectric layer 10 formed of lead oxide (PbO ₂ ),
By contacting the second dielectric layer 15, the fifth dielectric layer 24, and the sixth dielectric layer 30, their decomposition is promoted. Similarly, the first dielectric layer 10 and the second dielectric layer 1
5, Ozone that has penetrated into the next layer from a not-shown defect (fine hole) existing on the surface of the fifth dielectric layer 24 and the sixth dielectric layer 30 to the next layer is also formed by soda lime glass The decomposition is promoted by coming into contact with the formed first substrate glass 8 to fourth substrate glass 28. Thus, in this embodiment, the first catalyst layer 11
To not only the fourth catalyst layer 31 but also the first dielectric layer 1
0, the second dielectric layer 15, the fifth dielectric layer 24, the sixth dielectric layer 30, and the first substrate glass 8 to the fourth substrate glass 28 also function as catalyst layers for ozone decomposition. .

When the ozone is introduced into the upper ventilation gap 6 and the lower ventilation gap 7, the first electrode 9 and the second electrode 14 are introduced.
Ozone passing through the upper ventilation gap 6 and the lower ventilation gap 7 by applying an AC voltage between the fifth electrode 23 and the sixth electrode 29 while applying an AC voltage between Can be vibrated up and down to increase the contact rate with the first to fourth catalyst layers 11 to 31, thereby improving the decomposition efficiency of ozone.

The space 27 of the disassembly light source 3
When an AC voltage is applied between the third electrode 17 and the fourth electrode 20, which are arranged so as to sandwich the helium between the upper and lower sides, the plasma discharge generated between both electrodes causes the helium ( Infrared rays are emitted from He) and neon (Ne), and ultraviolet rays are emitted from xenon (Xe). This ultraviolet ray has a wavelength of 147 nm, but this excites the fluorescent substance coated on the inner wall surface of the space 27, and as a result, ultraviolet rays having a wavelength of 300 nm to 400 nm are emitted from the decomposition light source 3. These infrared rays and ultraviolet rays pass through the second substrate glass 12, the third substrate glass 13, etc. and reach the upper ventilation gap 6 and the lower ventilation gap 7,
Irradiated with ozone. The infrared rays thermochemically promote the decomposition of ozone, and the ultraviolet rays photochemically promote the decomposition of ozone.

However, the wavelength of ultraviolet rays becomes a problem. That is, ozone can absorb ultraviolet rays having a wavelength of 360 nm or less, but as described above, irradiation with ultraviolet rays having a wavelength of 240 to 300 nm will rather promote the generation of ozone. It is necessary to irradiate the upper ventilation gap 6 and the lower ventilation gap 7 with ultraviolet rays having the above. On the other hand, soda lime glass transmits only ultraviolet rays of 300 nm or more,
It has a property of not transmitting ultraviolet rays having a wavelength shorter than that. Therefore, the decomposition light source mainly emits ultraviolet rays having a wavelength of 300 to 400 nm as described above. Even if ultraviolet rays having a wavelength of 300 nm or less are emitted, the ultraviolet rays having a wavelength of 300 nm or less are composed of soda lime glass. The second substrate glass 12 and the third substrate glass 13 thus formed cannot pass through and cannot reach the upper ventilation gap 6 and the lower ventilation gap 7.

The graph of FIG. 3 shows the relationship between the ultraviolet absorption rate of ozone and the ultraviolet transmission rate of soda lime glass with respect to the wavelength of ultraviolet rays. In this graph, the horizontal axis shows the wavelength of ultraviolet rays, and the vertical axis shows the relative values of the ultraviolet absorption rate of ozone and the ultraviolet transmission rate of soda lime glass. The shaded range in the figure (that is, the range of wavelengths from 300 to 360 nm) is the range of ultraviolet rays that can be used to accelerate the decomposition of ozone.

By increasing the frequency of the AC voltage applied to the third electrode 17 and the fourth electrode 20, the amount of ultraviolet rays and infrared rays emitted from the decomposition light source 3 can be increased. The amount of light can be reduced by lowering the frequency. As a result, it is possible to control the degree of ozone decomposition by simply changing the frequency of the AC voltage applied to the third electrode 17 and the fourth electrode 20.

As is clear from the above, in this embodiment, the first substrate glass 8 constituting the upper catalyst substrate 2 serves as the first substrate, and the second substrate glass 12 constituting the decomposition light source is The upper ventilation gap 6 that functions as a second substrate and is sandwiched between the first catalyst layer 11 and the second catalyst layer 16.
Is a gap for passing ozone. Similarly, the light source for disassembly 3
The third substrate glass 13 constituting the
Further, the fourth substrate glass 28 constituting the lower catalyst substrate 4 functions as a second substrate, and the lower ventilation gap 7 sandwiched between the third catalyst layer 25 and the fourth catalyst layer 31 is used for ozone passage. It becomes a gap. As described above, in this embodiment, two gaps for the upper ventilation 6 and the lower ventilation 7 are formed as the gaps for passing ozone, and ultraviolet rays and infrared rays are simultaneously emitted from the decomposition light source 3 which is the light source portion. Since it is irradiated with ozone, more efficient ozone decomposition can be realized.

[0025]

As described above, in the ozone extinction apparatus according to the present invention, the catalyst layers for ozone decomposition are formed on the first substrate and the second substrate, respectively, and the catalyst layers are made to face each other. Since a gap for passing ozone is formed and the gap is irradiated with at least one of ultraviolet rays and infrared rays for ozone decomposition from the light source, it is possible to safely use ozone without replacing consumables such as a paper filter. Can promote the decomposition of.

Further, since the electrodes are arranged between the first substrate and the catalyst layer and between the second substrate and the catalyst layer and an AC voltage is applied between these electrodes, the gap portion is formed. The ozone that passes through can be vibrated so that it can contact the catalyst layer more effectively, and the decomposition of ozone can be further promoted.

Further, by changing the frequency of the AC voltage applied between the electrodes arranged on the pair of substrates constituting the light source section, it is possible to adjust the amount of ultraviolet rays and infrared rays to be irradiated, and to easily decompose ozone. Can be controlled.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire embodiment of the present invention.

FIG. 2 is a schematic cross-sectional perspective view of the above embodiment.

FIG. 3 is a graph showing the ultraviolet absorption rate of ozone and the ultraviolet transmittance of soda lime glass with respect to the wavelength of ultraviolet rays.

[Explanation of symbols]

 1 Ozone Extinguishing Device 3 Decomposition Light Source (Light Source) 6 Upper Venting Gap (Gap) 7 Lower Venting Gap (Gap) 8 First Substrate Glass (First Substrate) 9 First Electrode 11 First Catalyst layer 12 second substrate glass (second substrate) 13 third substrate glass (first substrate) 14 second electrode 16 second catalyst layer 23 fifth electrode 25 third catalyst layer 28 Fourth substrate glass (second substrate) 29 Sixth electrode 31 Fourth catalyst layer

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B01D 53/34 ZAB

Claims (2)

[Claims] 1. A first substrate, a second substrate, and a light source section, wherein catalyst layers for ozone decomposition are formed on the first substrate and the second substrate, respectively. The first substrate and the second substrate are arranged so as to face each other with an interval of, thereby forming a gap for ozone passage sandwiched between the catalyst layers, and the light source facing the gap. From at least one of ultraviolet rays and infrared rays for ozone decomposition
And the first substrate and the catalyst layer.
Electrodes between the second substrate and the catalyst layer.
And configured to apply an AC voltage between these electrodes.
An ozone extinguishing device characterized in that 2. The light source unit comprises a pair of electrodes provided with electrodes.
The boards are arranged facing each other with a predetermined space between them, and
UV generated gas inside the space formed by hermetically sealing the area
In addition, the amount of infrared gas generated is small
By applying an AC voltage between the above electrodes,
Formed to irradiate at least one of rays and infrared rays
The frequency of the AC voltage applied between the electrodes is changed.
By adjusting the amount of ultraviolet and infrared light emitted
The ozone annihilation apparatus according to claim 1 , wherein the ozone annihilation apparatus is configured so as to be capable of performing.