JPH0698929A - Sterilizing and deodorizing method by ozone - Google Patents

Abstract

PURPOSE:To obtain the deodorizing function of a closed space for which smell management and microorganism management are simultaneously required and a sterilization function of microorganisms by making combination use of ozone and a deodorizing function. CONSTITUTION:A motor driven suction fan 1, the deodorizing catalyst 2 and an ozone generating part 3 are successively installed in series. The front stage of the motor driven suction fan 1 is provided with an aperture 4 for introduction of the in-room air and the rear stage of the ozone generating part 3 is provided with an aperture 5 for discharge, respectively. A power source 8 for generating the high voltage to be impressed to the ozone generating part 3 is installed on the outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for sterilizing and deodorizing ozone in an enclosed space with ozone.

[0002]

2. Description of the Related Art FIG. 2 shows the structure of a conventional device for realizing a deodorizing method using ozone.

In a conventional ozone deodorizing apparatus, an ozone generating section 3, a deodorizing catalyst 2 and an electric suction fan 1 are sequentially arranged in series, and an indoor air introduction opening 4 is provided in a front stage of the ozone generating section 3 and a rear stage of the electric suction fan 1. An exhaust opening 5 is provided in each of these.

The deodorizing catalyst 2 used here is a catalyst that simultaneously adsorbs ozone and a malodorous component and accelerates the oxidative decomposition reaction of the malodorous component by ozone, and also has a function of completely decomposing excess ozone. is there.

The indoor air 6 containing a malodorous component is sucked by the action of the electric suction fan 1.

When the sucked indoor air 6 passes through the ozone generator 3, oxygen in the indoor air is ozonized, and a malodorous component and ozone are mixed. At this time, a high voltage is applied to the ozone generator 3 by a high voltage generating power source 8 installed outside.

A mixed gas of a malodorous component and ozone is adsorbed and concentrated on the surface of the deodorizing catalyst 2 in the next stage.

The malodorous components adsorbed and concentrated on the catalyst surface are oxidatively decomposed by the coexisting ozone, and are discharged to the outside as clean air 7 through the electric suction fan 1.

Therefore, the role of ozone in the above-mentioned conventional deodorizing device is to oxidize and decompose the malodorous components adsorbed and concentrated on the catalyst surface to regenerate the catalyst.

[0010]

In the conventional ozone deodorizing device, oxidative decomposition of malodorous components by ozone can be achieved by allowing sufficient reaction time on the catalyst surface. Since the contact time of is not taken, the bactericidal effect of ozone on microorganisms in the air cannot be expected at all.

At the same time, since sufficient ozone cannot be released to the outside, it is impossible to sterilize microorganisms attached to walls, floors, ceilings and other installations in the enclosed space.

The present invention is intended for a closed space that requires odor control and microbial control at the same time, such as a food processing plant, a pharmaceutical processing plant, a medical office in a hospital, an operating room, etc. The purpose is to have two functions, a function and a bactericidal function for microorganisms such as adherent bacteria, floating bacteria, and fallen bacteria.

[0013]

In the method of sterilization and deodorization by ozone of the present invention, an electric suction fan, a deodorizing catalyst,
The ozone generators are sequentially arranged in series, an indoor air introduction opening is provided in the front stage of the electric suction fan, and an exhaust opening is provided in the rear stage of the ozone generation unit, and a high voltage is applied to the ozone generator. Install the power supply outside.

[0014]

The deodorizing device having the ozone sterilizing function which realizes the present invention having the above-described structure is capable of performing deodorizing operation during the day when workers are engaged in a closed space, and performing sterilizing operation by ozone fumigation and regeneration treatment of catalyst during the night when unattended. You can do it.

[0015]

1 is a diagram showing the structure of an apparatus for realizing the present invention.

An electric suction fan 1, a deodorizing catalyst 2 and an ozone generator 3 are sequentially arranged in series, an indoor air introduction opening 4 is provided in the front stage of the electric suction fan 1, and an exhaust opening 5 is provided in the rear stage of the ozone generation unit 3. Are provided respectively.

The deodorizing catalyst 2 used here is a catalyst capable of adsorbing ozone and a malodorous component at the same time, accelerating the oxidative decomposition reaction of the malodorous component by ozone, and having a function of completely decomposing excess ozone. is there.

The daytime deodorizing operation in which the worker is engaged in the closed space is carried out by using the electric suction fan 1 and the deodorizing catalyst 2 shown in FIG.

The indoor air 6 containing a malodorous component is sucked by the action of the electric suction fan 1.

The sucked indoor air 6 is the deodorizing catalyst 2 in the next stage.
When passing through, the malodorous components in the indoor air are adsorbed on the surface of the catalyst and are discharged to the outside as clean air 7 through the ozone generator 3.

The catalyst surface on which the malodorous component is adsorbed needs to be regenerated by ozone. Generally, the malodorous component scattered in the working environment and the operator feels uncomfortable is an extremely dilute concentration of ppb order. However, it is not necessary to constantly regenerate the catalyst with ozone.

Further, at night, sterilization operation by ozone fumigation for an unoccupied closed space is carried out by the following method. In addition, the sterilization process of the closed space by ozone fumigation,
Based on the harmfulness of ozone gas, it is assumed that the operation will be conducted in an unmanned space.

The room air 6 is sucked using the electric suction fan 1, and when passing through the ozone generating section 3 through the deodorizing catalyst 2, oxygen in the room air is ozonized and released into an unmanned closed space. It At this time, a high voltage is applied to the ozone generator 1 by a high voltage generating power source 8 installed outside.

The closed space is fumigated with ozone gas having a concentration of about 1 to 10 ppm for several hours to sterilize microorganisms including floating bacteria and falling bacteria in the space and attached bacteria such as walls, floors, ceilings and other installations. I do. The sterilization condition is preferably selected according to the contamination status of the target space, but for example, when food poisoning bacteria such as Escherichia coli and Salmonella are targeted, fumigation time of about 1 hour is required at an ozone gas concentration of 10 ppm.

After the main fumigation process, in order to decompose and remove ozone gas remaining in the room, the indoor air 6 is sucked using the electric suction fan 1 and supplied to the deodorizing catalyst 2.

At this time, the residual ozone contained in the indoor air is adsorbed and concentrated on the catalyst surface, and the ozone generating section 3 in the next stage is used.
Clean air 7 is discharged from the exhaust opening 5 via the.

The ozone concentrated on the surface of the catalyst is consumed for the oxidative decomposition of the malodorous components adsorbed during the deodorizing operation in the daytime, and the deodorizing function of the catalyst is restored.

[0028]

By using the deodorizing device with ozone sterilizing function for realizing the present invention described above, it becomes possible to provide both deodorizing and sterilizing functions of a closed space with this single device, and processing in the food and pharmaceutical fields. It is useful for maintenance and management of environments that require odor control and microbe control at the same time, such as in workplaces, hospital clinics, and operating rooms.

Further, in the conventional ozone deodorizing method, a damper is provided in the preceding stage of the deodorizing catalyst, and the damper is operated according to operating conditions such as deodorizing operation and ozone fumigation, and the air passage is switched to deodorize. Although it is possible to have both functions of sterilization, as compared with the method of sterilization and deodorization by ozone of the present invention, the device becomes larger and the mechanism becomes complicated, resulting in an increase in cost.

[Brief description of drawings]

FIG. 1 is a diagram showing a structure of an apparatus for realizing a method of sterilization and deodorization by ozone of the present invention.

FIG. 2 is a diagram showing a structure of an apparatus for realizing a conventional ozone deodorizing method.

[Explanation of symbols]

 1 Electric suction fan 2 Deodorizing catalyst 3 Ozone generator 4 Indoor air introduction opening 5 Exhaust opening 6 Indoor air 7 Clean air 8 High voltage power supply

Claims (1)

[Claims] 1. An electric suction fan, a deodorizing catalyst, and an ozone generator are sequentially arranged in series, and an indoor air introduction opening is provided in a front stage of the electric suction fan, and an exhaust opening is provided in a rear stage of the ozone generation unit. When the deodorizing device with the ozone sterilization function provided is placed in the closed space and deodorized in the closed space,
A method of sterilization and deodorization by ozone, which operates the electric suction fan and the ozone generator when the electric suction fan is operated to sterilize the closed space.