JPH05245191A - Deodorizing device - Google Patents

Abstract

PURPOSE:To obtain the deodorizing device which obviates a degradation in the deodorization capacity of a catalyst and does not require a periodic exchange of a UV lamp. CONSTITUTION:A blower 6, a catalyst 7, an ozone generator 8 and a water drop generator 10 are disposed successively from a suction port 3 side in a duct 5 communicating with the air suction port 3 and blow-off port 4 provided in a case body 2. The blower 6, the ozone generator 8 and the water drop generator 10 are operated to dissolve ozone in the water drops generated in the duct 5, by which OH free radicals are formed. The odorous component in the air sucked from the suction port 3 and the odorous components adsorbed on the catalyst 13 are cracked to odorless and harmful materials by the oxidation effect of the OH free radicals and the ozone itself. The cracked components are released from the blow-off port, by which the deodorization of the air and the regeneration of the catalyst 13 are executed without using the UV light.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing device for deodorizing an odor generated in a food storage or the like.

[0002]

2. Description of the Related Art As a conventional deodorizing technique, there is a method of adsorbing and deodorizing odorous components by a catalyst such as activated carbon. However, since the odorous components are adsorbed and deposited on the catalyst, the deodorizing ability of the catalyst gradually decreases. There is a problem.

In order to solve this problem, Japanese Patent Laid-Open No. 2-96
In Japanese Patent No. 519, a method of oxidatively decomposing an odorous component adsorbed on a catalyst by ozone to regenerate the deodorizing ability of the catalyst,
Alternatively, Japanese Patent Application Laid-Open No. 1-238868 discloses a method of regenerating deodorizing ability by oxidatively decomposing odorous components adsorbed on a catalyst by OH radicals generated by irradiating a photoexcited catalyst with ultraviolet rays.

[0004]

However, in the above ozone method, the odor component such as sweat odor, cigarette odor, or ammonia odor is not completely oxidized and decomposed by ozone, and therefore the deodorizing ability of the catalyst cannot be sufficiently reproduced. On the other hand, the above-mentioned method using OH radicals oxidizes and decomposes the above-mentioned odorous components, but has a problem that the life of the ultraviolet lamp that radiates ultraviolet rays is short and the ultraviolet lamp must be replaced regularly. there were.

The present invention has been made in view of the above problems, and paying attention to the fact that OH radicals are produced when ozone is dissolved in water, and by utilizing the OH radicals produced by this method. An object of the present invention is to provide a deodorizing device which does not deteriorate the deodorizing ability of a catalyst and does not require periodic replacement of an ultraviolet lamp.

[0006]

In order to achieve the above object, the present invention provides (1) a main body case having an air inlet and an air outlet, and the main body case provided in the main body case. A duct that communicates the air outlet, a blower that sucks air from the air inlet through the duct and blows air from the air outlet, an ozone generator that generates ozone in the duct, and an ozone generator of the ozone generator. A water droplet generator that generates water droplets in the duct on the downstream side of the blast, and a deodorizing catalyst that is provided on the downstream side of the blast of the water droplet generation unit and that blocks the blowout port, are generated by the ozone generator. The technical means of dissolving ozone in the water droplets generated by the water droplet generator is used, and (2) the ozone generator is generated by using a steam generator instead of the water droplet generator. Shi It is effective in to generate OH radicals and configured to dissolve ozone into water vapor generated in the steam generator.

[0007]

According to the above means, while the odorous component in the air sucked from the suction port by the operation of the blower flows through the duct and reaches the air outlet, the ozone generated by the ozone generator is generated by the water drop generator. Partly oxidatively decomposed by the water droplets generated in step 1, or by the OH radicals generated in the steam generator when dissolved in water vapor and ozone itself, and the remaining undecomposed odorous components block the outlet. Adsorbed on the catalyst.

Here, the odor component adsorbed on the catalyst is O
Since it is exposed to H radicals and ozone, odor components such as sweat odor, cigarette odor, or ammonia odor that are not decomposed by ozone are OH.
Radicals are oxidatively decomposed into odorless and harmless substances and discharged from the outlet, so the odor in the air is deodorized,
The catalyst is regenerated and the decrease in deodorizing ability is suppressed.

[0009]

Embodiments of the deodorizing apparatus of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic sectional view of a deodorizing device of the present invention. In FIG. 1, an air suction port 3 is formed on the side surface of the body case 2, and an air outlet 4 is formed on the upper surface, and a duct 5 that connects the air inlet 3 and the air outlet 4 is provided on the body case 2. It is provided inside.

A blower 6 that sucks air from the suction port 3 and blows air from the blow-out port 4 through the duct 5 is provided in the duct 5 near the suction port 3. A catalyst 7 made of activated carbon that adsorbs odorous components is airtightly installed in the duct 5 of the above.

An ozone generator 8 for generating ozone by, for example, silent discharge is provided in the duct 5 on the downstream side of the catalyst 7 for blowing air, and a container for storing water is provided on the downstream side of the ozone generator 8 for blowing air. 9 is provided, and a water drop generator 10 for applying, for example, ultrasonic vibration to water in the container 9 to generate water drops is attached to the container 9. The water in the container 9 is appropriately replenished from a water tank 12 installed in a space 11 formed by being partitioned from the main body case 2.

A catalyst 13 made of activated carbon for adsorbing odorous components is airtightly attached to the air outlet 4, and a blower 6 and an ozone generator 8 are provided in a space 14 defined by the main body case 2 and the duct 5. Also, a controller 15 for controlling the operation of the water drop generator 10 is provided.
Is configured.

FIG. 2 shows the deodorizing apparatus 1 as described above in a food storage 1
It is a schematic sectional drawing installed in 00. In FIG. 2, a cooler 20 is provided above the deodorizing device 1, air deodorized by the deodorizing device 1 is cooled by the cooler 20, and condensed water generated in the cooler 20 is drained by a drain pan 21. It can be received by the water tank 12 via the.

Next, the operation of the above embodiment will be described.
explain. 1, the blower 6, the ozone generator 8 and
When the water droplet generator 10 is operated, the arrow A is drawn from the suction port 3.
The air containing the odorous component indicated by is sucked into the duct 5.
At the same time, the operation of the ozone generator 8 causes the duct 5 to open.
With the generation of zoning, the operation of the water drop generator 10
Water droplets are generated in the duct 5 on the downstream side of the blast of the ozone generation part
In order to do this, ozone (O ₃) Is a water drop (H₂O),
As in chemical formula 1, OH radicals with strong oxidizing power irradiate ultraviolet rays.
Generate without shooting.

[0015]

## STR1 ## _{O 3 + H 2 O → HO} + 3 + OH - H 3 O + OH - → 2HO 2 O 3 + HO 2 → 2O 2 + OH radicals, where the air containing odor components indicated by the arrow A sucked into the duct 5 Part of the odor component is adsorbed when passing through the catalyst 7 and becomes air shown by an arrow B and flows in the duct 5, so that the odor component in the air is generated by the OH radicals and ozone generated in the duct 5. Partly oxidatively decomposed and undecomposed odorous components are adsorbed by the catalyst 13.

Here, the odor component adsorbed on the catalyst 13 is exposed to OH radicals and ozone, but is not oxidatively decomposed by ozone. For example, the odor component of ammonia (NH ₃ ) is oxidized by the OH radicals and chemical formula 2 It is decomposed into odorless and harmless nitrogen (N ₂ ) and water (H ₂ O).

[0017]

Embedded image 2NH ₃ + 6 · OH radical → N ₂ + 6H ₂ O Further, for example, the odorous component of acetaldehyde (CH ₃ CHO), which is a tobacco odor that is not oxidized and decomposed by ozone, is oxidized by the OH radical and becomes odorless as shown in Chemical Formula 3.・ Decomposed into harmless carbon dioxide (CO ₂ ) and water (H ₂ O).

[0018]

[Chemical formula 3] CH ₃ CHO + 10 · OH radical → 2C
O ₂ + 7H ₂ O OH radicals oxidatively decomposed by the above N ₂ , CO
_{Since 2} and H ₂ O are discharged from the air outlet 4, the catalyst 13
The surface of the catalyst is constantly regenerated, whereby the deodorizing ability of the catalyst 13 is maintained for a long time without being deteriorated.

Further, in FIG. 2, when the deodorizing device 1 is installed in the food storage 100, the air in the food storage 100 is deodorized by the action of the deodorizing device 1, but when the food 30 is a fruit or a vegetable. Ethylene gas generated by storage in
Since it is decomposed into carbon dioxide (CO ₂ ) and water (H ₂ O), long-term storage of fruits and vegetables becomes possible.

Since the OH radical and ozone have a bactericidal action in addition to the deodorizing action, the food storage 10
Bacteria floating in 0 are sucked into the deodorizing apparatus 1 together with air to be sterilized, so that the food storage 100 is always kept clean.

Next, in the present embodiment, the water droplets are generated by the water droplet generator 10. However, instead of the water droplets generator 10, steam is generated by the steam generator 10A shown in FIG. It is more effective to dissolve OH radicals in terms of generating OH radicals.

Although the catalyst 7 is provided on the suction side in the duct 5 in this embodiment, if the operation of the ozone generator 8 is stopped in conjunction with the stop of the blower 6, the blower 6 will stop. Since it is possible to prevent ozone from leaking, it is not necessary to provide the catalyst 7 as shown in FIG.

In this embodiment, the blower 6 is connected to the duct 5
Although it is arranged on the suction side inside, it may be provided at the outlet of the outlet 4 as shown in FIG. 4 (however, in this case, it is a suction type blower). Any position that causes air flow to 4 may be used.

[0024]

As described above, in the deodorizing apparatus of the present invention, a part of the odorous components in the air and the catalyst are generated by the oxidizing action of OH radicals generated when ozone is dissolved in water and ozone itself. The rest of the odor components adsorbed on is decomposed into odorless and harmless substances, eliminating the need for regular UV lamp replacement as in the past, and the catalyst is constantly regenerated to deodorize the catalyst over a long period of time. Ability is maintained.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a deodorizing apparatus of the present invention.

FIG. 2 is a schematic sectional view of a food storage in which the deodorizing device is installed.

FIG. 3 is a schematic cross-sectional view of a deodorizing device showing another embodiment.

FIG. 4 is a schematic sectional view of a deodorizing device showing still another embodiment.

[Explanation of symbols]

 1 Deodorizer 2 Body case 3 Suction port 4 Blowout port 5 Duct 6 Blower 8 Ozone generator 10 Water drop generator 10A Steam generator 13 Catalyst

Claims (2)

[Claims] 1. A main body case having an air intake port and an air outlet, a duct provided in the main body case for communicating the air inlet and the air outlet, and air from the air inlet through the duct. A blower that sucks in and blows air from the outlet, an ozone generator that generates ozone in the duct, a water droplet generator that generates water droplets in the duct on the downstream side of the blowing air of the ozone generator, and the water droplet. A deodorizing catalyst that is provided on the downstream side of the blast of the generating unit and that closes the blowout port, and dissolves ozone generated by the ozone generator into water droplets generated by the water droplet generator. apparatus. 2. The water vapor generator is used in place of the water droplet generator to dissolve the ozone generated by the ozone generator into the water vapor generated by the water vapor generator. Deodorizing device.