JP3502111B2 - Fumigation apparatus and ozone fumigation method using the fumigation apparatus - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fumigation apparatus applicable to various fumigation gases and an ozone fumigation method using ozone gas in the fumigation apparatus. A fumigation device with a pressure discharge type gas storage container that can be carried in to make it a functional structure, and to the constituent materials such as the wall surface in the fumigation chamber and the object to be treated stored in the fumigation chamber using the device. The present invention relates to an ozone fumigation method in which a high-concentration ozone gas is brought into contact under high humidity conditions to perform sterilization and deodorization treatment.

[0002]

2. Description of the Related Art Conventionally, formaldehyde gas fumigation or peracetic acid, inverse soap, or alcohol spraying has been carried out for sterilization in laboratory animal facilities. Among these chemicals, inverse soap, alcohol and the like have a weak bactericidal action, and therefore, formaldehyde gas fumigation, so-called formalin fumigation is often performed as a general sterilization treatment.

[0003] Formaldehyde gas has a strong bactericidal action (some have pointed out that the bactericidal effect is suspected in practical use), but on the other hand, it has the drawback of being highly toxic, irritating and corrosive. Hemalin solution is gasified and injected, and after a certain period of time, it sterilizes the constituent materials such as wall surfaces in the fumigation chamber and the object to be treated contained in the fumigation chamber,
By monitoring the gas concentration in the fumigation chamber and finally injecting ammonia gas, which is a neutralizing agent, to detoxify the remaining formaldehyde gas, these processing operations are actually implemented as devices. Has been done.

However, since the formaldehyde gas is adsorbed by the environmental material, the accurate gas concentration cannot be grasped, and as a result, it is difficult to completely neutralize with form of ammonia gas, and in fact, the disinfection is actually performed. Sometimes the concentration of formaldehyde gas is too high (100 ml of formalin water in 27 m space)
In the above cases, the formalin polymer remains on the surface of the material and the odor of formalin does not disappear easily after neutralization, and there is a risk of fire due to the exothermic reaction during the reaction. There was a point.

[0005]

The object of the present invention is, in view of the above reasons,
In order to eliminate all problems such as residual pungent odor after treatment in formalin fumigation, ozone fumigation that has a deodorizing effect in addition to a bactericidal effect and that can obtain a bactericidal effect at a concentration lower than formaldehyde gas is adopted. While premising that, it is to provide a fumigation apparatus having excellent functionality and versatility that can be effectively used for other fumigation gases.Furthermore, another object of the present invention is to fumigate the fumigation apparatus. An object of the present invention is to provide an ozone fumigation method that enables a more effective processing operation such as a drastic reduction of the processing time using an apparatus.

[0006]

DISCLOSURE OF THE INVENTION In disclosing the fumigation apparatus of the present invention and the ozone fumigation method using the fumigation apparatus, it is necessary to solve the following problems.

First of all, regarding the fumigation apparatus, since the fumigation room in which fumigation is planned is constructed as a special dedicated facility, it is possible to use any indoor space that can be hermetically sealed. It is inconvenient to use a large device that is difficult to carry in or to connect with the fumigation chamber, and therefore the fumigation device to be provided by the present invention is easy to connect to the fumigation chamber. At the same time, it is preferable to have a functional device structure that is easy to carry in.

Next, when carrying out ozone fumigation using this type of fumigation apparatus, it is necessary to consider the improvement of the sterilization effect by ozone. However, ozone has a bactericidal effect under high humidity conditions. It is known that humidity conditions are unavoidable in the sterilization treatment using a specific microorganism or fungus as an object to be improved, and therefore, the ozone fumigation method to be provided by the present invention is a humidifier. Assuming that the combination of
At that time, it is necessary to provide a fumigation method in which the treatment operation can be performed in the shortest possible time.

FIGS. 5 to 8 show a conventional general ozone fumigating apparatus and ozone fumigating method for specifically presenting the problems relating to the fumigating apparatus and the ozone fumigating method.

FIG. 5 shows an internal circulatory type ozone fumigating apparatus 101, for example, a silent discharge type ozone generating apparatus, a humidifying apparatus, and
Ozone fumigation device 1 composed of ozone decomposition treatment device etc.
01 is installed, and the atmosphere in the fumigation chamber A is set to the ozone fumigation apparatus 1
01 is used to sterilize the constituent materials such as the wall surface in the fumigation chamber A and the object to be treated B housed in the fumigation chamber A by circulating for a certain time through 01, while the one shown in FIG. It is a circulation type ozone fumigation device 102 and is a fumigation chamber A which is a closed space.
An ozone fumigating device 102 including an ozone generating device and a humidifying device is disposed outside the room through a piping system, and the fumigating chamber A
An ozone decomposition treatment device 103 is disposed inside the chamber, and the atmosphere in the room is circulated for a certain period of time through the ozone fumigating device 102 so that the constituent materials such as the wall surface in the fumigating chamber A and the fumigating chamber A are introduced. The object B to be treated is sterilized.

The ozone fumigation apparatus 101.1 of FIGS. 3 and 4
02, the internal circulation type ozone fumigation apparatus 101 is used in an atmosphere filled with ozone gas of high humidity and high concentration, and therefore, it is necessary to take measures against corrosion of the apparatus such as sealing, and to generate the source gas. , An overall structure becomes large due to a complicated apparatus configuration such as requiring a compressor, a cooling means, etc., while, in the external circulation type ozone fumigation apparatus 102, the apparatus itself is special because it is used in the outside air. However, it is necessary to devise a sealing method for maintaining the airtightness in the fumigation chamber A and a method for connecting the piping system limited to the structure of the fumigation chamber A.

The ozone fumigation methods of FIGS. 7 and 8 are mainly two types of ozone fumigation methods which are possible by using a conventional fumigation apparatus such as the above-mentioned ozone fumigation apparatus 101.102. In the figure, (a) shows the humidity in the fumigation chamber A, and (b) shows the ozone concentration in the fumigation chamber A.

By the way, in the case of this type of ozone fumigation, in order to improve the sterilizing effect of ozone on the object to be treated B and the like, ozone gas having an optimum concentration is injected into the fumigation chamber A under high humidity conditions. It is necessary to realize this state in the shortest possible time in order to shorten the processing time.

The method shown in FIG. 7 is a fumigation method of ozone → humidification method in which ozone generation is started to obtain ozone concentration conditions and then humidification is started to obtain humidity conditions after a certain period of time. In addition to the time required for the ozone concentration (b) to reach the condition, it also takes time for the humidity (a) to reach the condition, so the processing time becomes long.

On the other hand, the one shown in FIG. 8 is a fumigation method of simultaneous ozone / humidification method in which humidification is started at the same time when ozone is generated and both ozone concentration conditions and humidity conditions are obtained after a certain period of time. Since the decomposition reaction of ozone is promoted by the moisture in the atmosphere, the time until the ozone concentration (b) reaches the condition becomes longer than that in the method of FIG. 7, and as a result, it does not contribute to the reduction of the processing time at all. Is.

[0016]

In the fumigation apparatus of the present invention, the fumigation gas is supplied to the fumigation chamber from a pressure discharge type gas storage container, so that the fumigation chamber is connected to the fumigation chamber like an external circulation system. In addition to eliminating the need to devise a method, a functional structure such that predetermined processing operations can be performed by simply loading only the gas storage container into the fumigation chamber, and at the same time, the gas supply device is located outside the fumigation chamber. By adopting the structure of arranging in the above, it is not necessary to take measures against corrosion of the gas supply device (ozone generator) in the ozone fumigation used together with the humidifier.

Further, the ozone fumigation method of the present invention uses the fumigation apparatus disclosed in the present invention, whereby the high-concentration gas previously accumulated in the gas accumulation container is obtained immediately after the humidity condition is obtained by the humidifier. Instantly forcibly discharges the ozone gas of the product, and it is possible to effectively obtain the humidity conditions and ozone concentration conditions necessary for sterilization and deodorization treatment in a very short time without being affected by the decomposition reaction during ozone generation. It was made.

[0018]

According to a first aspect of the present invention, a pressure discharge type gas storage container provided with an inlet, a discharge port and a pressure adjusting means is formed, and the gas storage container is formed. A gas supply device is connected to the introduction port and a valve mechanism connected to the discharge port with an appropriate valve operating means is provided, so that the fumigant gas is forcibly discharged from the discharge port to the pressure adjusting means of the gas storage container. The driving device is connected, and in the structure according to claim 2 of the claims, the humidifying device is provided in the fumigation chamber and the gas storage container as a flexible container is provided from outside the fumigation chamber. , Ozone gas is accumulated in the gas storage container by a gas supply device that is an ozone generator, and the humidification device humidifies the fumigation chamber to maintain a high humidity state. In this state, the valve mechanism is selectively operated by the valve operating means. Drive device By forcibly discharging the ozone gas required capacity is actuated instantaneously, is configured to obtain the humidity conditions and ozone gas concentration conditions required for sterilization deodorization treatment in a short time.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention, which has achieved the above object, will be described below with reference to the drawings of the embodiments.

FIG. 1 is a schematic view of a fumigation apparatus of the present invention, FIG. 2 is a schematic view of a gas storage container of a pressure discharge type used in the fumigation apparatus of the present invention, and FIG. It is a schematic diagram when the fumigation apparatus of the invention is used as an ozone fumigation apparatus, FIG. 4 is an explanatory view of an ozone fumigation method using the fumigation apparatus of the present invention, and FIG. 5 is a conventional internal FIG. 6 is a schematic diagram of a system type ozone fumigating device, FIG. 6 is a schematic diagram of a conventional external type ozone fumigating device, and FIG. 7 is an explanatory diagram of a conventional ozone → humidifying type ozone fumigating method. Yes, FIG. 8 is an explanatory diagram of a conventional ozone fumigation method of the ozone / humidification simultaneous method.

The present invention relates to a fumigation apparatus 1 in a hospital, a laboratory animal facility, a food factory, a storage, etc. and an ozone fumigation method using the fumigation apparatus 1, and claims 1 and 2 of the claims. What is described is a fumigation apparatus 1 for injecting fumigation gas of an optimum concentration into a fumigation chamber A which is a closed space and performing reaction treatments such as sterilization treatment and deodorization treatment.
a, a discharge port 2b and a pressure discharge type gas storage container 2 provided with an appropriate pressure adjusting means 2c are formed, and a gas supply device 3 is connected to the inlet port 2a of the gas storage container 2 and the discharge port is formed. 2b is provided with a valve mechanism 4 connected to an appropriate valve operating means 8, and a drive device 5 for forcibly discharging fumigant gas from the discharge port 2b is connected to the pressure adjusting means 2c of the gas storage container 2. The method according to claim 2 of the claims is an ozone fumigation method using the fumigation apparatus 1 according to claim 1, wherein the fumigation chamber A A gas accumulating container 2 which is a single or plural flexible container having a humidifying device 6 provided therein and satisfying a necessary capacity condition.
Is provided from outside the fumigation chamber A, and ozone gas of an appropriate concentration is stored in each of the gas storage containers 2 by a gas supply device 3 which is an ozone generator. By humidifying the inside to maintain a high humidity state, and in this state, the valve mechanism 4 is selectively opened and closed by the valve operating means 8 and at the same time the drive device 5 is operated to forcibly discharge the required amount of ozone gas, The humidity conditions and ozone gas concentration conditions required for sterilization and deodorization treatment are obtained in a short time.

That is, claim 1 of the present invention
As shown in FIG. 1, the fumigation apparatus 1 described in 1 above seals the fumigation chamber A in order to prevent the fumigation gas from leaking during the process operation, and the fumigation chamber A is subjected to a reaction treatment. By injecting the fumigant gas of the optimum concentration, the sterilization treatment of the constituent materials such as the wall surface of the fumigant chamber A to which the microorganisms adhere and the object B to be treated such as the laboratory equipment housed in the fumigant chamber A, The deodorizing process is performed.

The fumigation room A according to the present invention is various room spaces that can be hermetically sealed in a hospital, a laboratory animal facility, a food factory, a storage room, etc. The fumigation room A may be a single room or a plurality of rooms. Further, a plurality of chambers having different volumes may be targeted.

According to the present invention, a gas storage container 2 having a gas barrier property and a corrosion resistance having an inlet 2a and an outlet 2b capable of storing a fixed amount of fumigant gas such as ozone is formed, and the gas storage container 2 is introduced. A gas supply device 3 for generating or supplying fumigant gas is connected to the port 2a by an appropriate pipe, and
A valve mechanism 4 such as a solenoid valve electrically connected to an appropriate valve operating means 8 is connected to the discharge port 2b of the gas storage container 2.
Is provided.

As shown in FIG. 2, the gas storage container 2 is formed by a bag-shaped flexible container or the like having properties such as a gas barrier property against fumigation gas and corrosion resistance against humidity. The container 2 is provided with an appropriate pressure adjusting means 2c for changing the internal capacity of an auxiliary bag or the like, and the gas storage container 2 is used singly or plurally to secure the capacity necessary for the processing operation. In the gas storage container 2 shown in FIG. 2, the valve mechanism 4 shown in FIGS. 1 and 3 is omitted as a check valve provided inside the inlet 2a and the outlet 2b.

A driving device 5 such as a pressure pump for sending compressed air to forcibly discharge fumigated gas from the discharge port 2b is connected to the pressure adjusting means 2c such as an auxiliary bag of the gas storage container 2. When the drive device 5 is a pressure pump, the atmospheric pressure in the fumigation chamber A, which adversely affects the sealing means, is prevented by pulling the atmosphere in the fumigation chamber A as shown in the figure. It is also possible to draw outside air in consideration of the degree of influence and operability.

A fumigation chamber A for the fumigation apparatus 1 of the present invention
In order to use it, the fumigant gas is accumulated in the gas storage container 2 by the gas supply device 3 and, for example, only the gas storage container 2 is disposed in the fumigation chamber A and outside the fumigation chamber A. By operating the valve operating means 8 provided with an operating portion (not shown) and the driving device 5, the pressure adjusting means 2c is operated at the same time as the opening of the discharge port 2b, so that the fumigant gas in the atmosphere in the fumigating chamber A is fusogenic Is forcibly discharged.

A second aspect of the present invention is an ozone fumigation method using the fumigation apparatus 1 according to the first aspect of the present invention.

In order to use the fumigation apparatus 1 of the present invention as an ozone fumigation apparatus, as shown in FIG.
Is a silent discharge type ozone generator that continuously generates ozone by introducing a raw material gas such as oxygen,
On the other hand, in the fumigation room A, a humidifying device 6 for obtaining humidity conditions is provided.
And the exhaust gas treatment device 7 using a catalyst or the like for decomposing the unreacted ozone gas after the treatment.

In this case, the gas storage container 2 is the fumigation chamber A.
Gas is formed as an ozone bag made of one or more ozone-resistant fluororesins or the like satisfying the required capacity condition according to the volume of the gas, and gas is supplied to each of the gas storage containers 2 as an ozone generator. The device 3 is used by accumulating ozone gas having an appropriate concentration. Incidentally, the one shown in the drawing shows an example in which three gas storage containers 2 having a volume of 100 l are used in the fumigation chamber A having a volume of 50 m ³ .

In the ozone fumigation method of the present invention, the gas storage container 2 is moved from outside the fumigation chamber A to the fumigation chamber A by using the above-mentioned fumigation apparatus 1.
As shown in FIG. 4, first, the ozone generator, which is the gas supply device 3 outside the fumigation chamber A, and the humidification device 6 inside the fumigation chamber A are simultaneously activated, as shown in FIG.

After a lapse of a certain time, a high concentration of ozone gas is accumulated in the gas storage container 2, while the humidity (a) in the fumigation chamber A gradually rises to 90%.
A high humidity condition of about RH is obtained, and the humidity condition necessary for the sterilization treatment is obtained. In this state, the gas supply device 3 is stopped and the humidifying device 6 is operated as it is to maintain the high humidity in the fumigation chamber A.

Next, the valve mechanism 4 of the discharge port 2b of each gas storage container 2 is selectively opened and closed by the valve operating means 8 (in the embodiment, all of S1 to S3 are opened), and the pressure adjusting means 2c. When the drive device 5 connected to the above is operated, the required amount of ozone gas in each of the gas storage containers 2 is forcibly and instantaneously discharged. This ozone gas is a high-concentration ozone gas. Therefore, the ozone concentration (b) in the fumigation chamber A rises sharply by injecting the ozone gas for a short time, and the humidity condition and ozone The concentration conditions can be obtained.

In the fumigation chamber A, high-concentration ozone gas comes into contact with the constituent materials such as the wall surface in the fumigation chamber A and the object to be treated B under high humidity conditions, and sterilization and deodorization treatment is performed after a certain period of time. After that, the humidifying device 6 is stopped and the exhaust gas treating device 7 is operated to decompose the unreacted ozone gas.

The fumigation apparatus 1 according to claim 1 of the present invention and the ozone fumigation method according to claim 2 using the fumigation apparatus 1 and conventional ozone fumigation [Table 1] and [Table 2] show comparative examples of a steaming apparatus and an ozone fumigating method using the ozone fumigating apparatus.

[0036]

[Table 1]

[Table 2]

In Table 2, the corrosion of the constituent materials in the fumigation chamber A was reduced because the contact time between the constituent materials in the fumigation chamber A and the ozone gas was significantly reduced as the treatment time was shortened. The reason is that the corrosion due to oxidation under a high humidity condition is reduced.

[0038]

INDUSTRIAL APPLICABILITY The present invention, by adopting ozone fumigation, solves all problems such as residual pungent odor after treatment in conventional formalin fumigation, and improves safety and treatment capacity. Of course, the fumigation apparatus disclosed in the present invention is connected to the fumigation chamber by supplying the fumigation gas into the fumigation chamber from a pressure discharge type gas storage container. There is no need to devise in the method, the predetermined processing operation can be performed only by loading the gas storage container into the fumigation chamber, and the gas supply device is arranged outside the fumigation chamber so that the fumigation of the device body is performed. Not only does it eliminate the need for corrosion countermeasures such as steaming gas, but it has excellent functionality and versatility that can be effectively used for any fumigating gas. On the other hand, the ozone smoke disclosed in the present invention The steaming method uses the above-mentioned device Immediately after obtaining the humidity conditions in the storage chamber, the high-concentration ozone gas accumulated in advance in the gas storage container is forcibly and instantly discharged, and the humidity conditions and ozone concentration conditions necessary for sterilizing and deodorizing treatment are set in an extremely short time. This is an epoch-making method which contributes to shortening the processing time and improving the durability of the constituent members in the fumigation chamber, which are effectively obtained.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a fumigation apparatus of the present invention.

FIG. 2 is a schematic diagram of a gas discharge container of a pressure discharge type used in the fumigation apparatus of the present invention.

FIG. 3 is a schematic diagram when the fumigation apparatus of the present invention is used as an ozone fumigation apparatus.

FIG. 4 is an explanatory view of an ozone fumigation method using the fumigation apparatus of the present invention.

FIG. 5 is a schematic view of a conventional internal ozone fumigating apparatus.

FIG. 6 is a schematic diagram of a conventional external type ozone fumigation apparatus.

FIG. 7 is an explanatory diagram of a conventional ozone fumigation method of ozone → humidification method.

FIG. 8 is an explanatory diagram of a conventional ozone fumigation method of ozone / humidification simultaneous method.

[Explanation of symbols]

A fumigation room B Processing object (A) Humidity (B) Ozone concentration 1 Fumigation equipment 2 Gas storage container 2a inlet 2b outlet 2c Pressure adjusting means 3 gas supply device 4 valve mechanism 5 drive 6 humidifier 7 Exhaust gas treatment equipment 8 valve operating means (S1 to S3) 101 Ozone fumigation equipment 102 Ozone fumigation equipment 103 Ozone decomposition treatment device

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01N 25/00 A01M 13/00 A01N 59/00

Claims (2)

(57) [Claims] 1. A fumigation apparatus for injecting fumigant gas having an optimum concentration into a fumigation chamber having a closed space to perform reaction treatments such as sterilization treatment and deodorization treatment, wherein an introduction port, a discharge port, and an appropriate pressure are provided. forming a gas accumulation condition of the outgoing compressed exhaust provided with adjusting means method, provided a valve mechanism is connected to the valve operating means to the discharge port along with connecting the ozone gas supplying device to the gas accumulation condition of inlet And the discharge port is the fumigation chamber through the valve mechanism.
And a humidifying device is provided in the fumigation chamber for forcibly discharging fumigation gas into the fumigation chamber from the outlet to an appropriate pressure adjusting means of the gas storage container . A fumigation device characterized by connecting a driving device. 2. An ozone fumigation method using the fumigation apparatus according to claim 1, wherein a humidification device is provided in the fumigation chamber.
To humidify the inside蒸室by maintaining a high humidity condition, disposed gas accumulation condition that satisfies the condition one or a plurality of flexible containers required capacity Kaoru outside蒸室, to該夫s gas accumulation condition in with the to accumulate ozone gas suitable concentration by the gas supply apparatus and the ozone generating apparatus, the gas storage condition
Before and at the same time selectively opened and closed by the valve operating means to the valve mechanism provided in the middle of the passage toward the Kaoru蒸室from the outlet
The serial ozone gas required capacity to operate the connected drive to appropriate pressure regulating means of the gas accumulation condition instantaneously Kaoru
By forcibly discharged into蒸室 ozone Kaoru蒸方method characterized by obtaining a short time humidity and ozone concentration conditions required for sterilization deodorization process.