JPH086936B2 - Fumigation treatment equipment and deodorization treatment equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fumigation treatment equipment and deodorization treatment equipment, and more particularly to equipment applied to fumigation treatment and deodorization treatment in a plurality of bioclean rooms that are air-conditioned by the same air conditioning system.

[0002]

2. Description of the Related Art Various fumigant gases are used for indoor sterilization by fumigation according to the purpose. Bioclean rooms that had to be disinfected prior to use were fumigated primarily with formaldehyde. The bio-clean room is air-conditioned after fumigation, and animal experiments are conducted in it. Therefore, it is necessary to immediately discharge the fumigant gas to the outside of the room after the fumigation process. Therefore, in the past, an operator brought a fumigant gas generator into the bioclean room as needed to generate fumigant gas, and after the fumigation treatment was completed, the fumigant gas was untreated and forcedly exhausted to the outside by an exhaust fan. Was. Therefore, in the conventional fumigation process of the bioclean room, there are problems that the work is complicated, the worker is exposed to the toxic gas, the surrounding environment is contaminated, and the treatment effect is not uniform.

On the other hand, even in a facility having a large number of bioclean rooms, the fumigation gas generator is brought into each room by the conventional method for fumigation treatment.

[0004]

In facilities having a large number of bioclean rooms, it has been particularly complicated to individually treat each room by a conventional method. In addition, in a facility with multiple laboratories that are air-conditioned by the same air conditioning system, it is necessary to stop the air conditioning for one laboratory in order to perform fumigation treatment, while suspending experiments in other laboratories. There was an inconvenience. On the other hand, there has also been a demand for useful equipment capable of removing the malodor generated temporarily in each laboratory.

[0005]

In order to solve the above-mentioned problems, the present invention has a plurality of laboratories which have air-conditioning ducts and are used while air-conditioning after fumigation treatment, and a plurality of the laboratories. In the air-conditioning duct, a fumigation air supply duct and an exhaust duct separately provided, a fumigant gas supply device for supplying fumigant gas into the laboratory through the air supply duct, and after the fumigation treatment is completed. A removal device for introducing a gas in the laboratory discharged into the exhaust duct to remove fumigant gas components from the gas, and a gas detection device for detecting the fumigant gas concentration in the gas in the laboratory, The gas detector stops the fumigant gas supply by detecting the gas concentration required for the fumigation process when the fumigant gas is supplied, and it is preset when the fumigant gas is removed. Providing fumigation treatment facility, characterized by comprising a means for stopping the introduction of gas into removal apparatus by detecting the volume gas concentration.

The present invention also provides a plurality of laboratories to be used while air-conditioning, a deodorizing device for removing a bad odor generated in the laboratories, and a deodorizing device for introducing odors from each laboratory to the deodorizing device. (EN) Provided is a deodorizing treatment facility comprising a deodorizing duct and means for detecting the generation of a bad odor.

A means for stopping the fumigant gas supply by detecting the set gas concentration by the gas detector when supplying the fumigant gas, and a means for removing the fumigant gas by the gas detector detecting the set gas concentration when removing the fumigant gas. A damper or the like can be used as a means for stopping the introduction of gas.

The deodorizing device of the present invention has the same basic constitution as the above-mentioned deodorizing device, but a wet or dry deodorizing device which is usually used is used depending on the odorous components which are expected to be generated in the experiments. Can be adopted. Preferably, as in the case of the removing device, an oxidizing absorbent and / or an adsorbent such as activated carbon is filled inside. As a means for detecting the pressure difference between the laboratory and the outside, for example, a differential pressure gauge and a damper that opens and closes in conjunction with it are used.

The fumigation treatment equipment and deodorization treatment equipment of the present invention can be operated manually, but it is preferable to operate them unattended by automatic control. In that case, use a motor damper to connect the fumigant gas supply device, gas detection device, removal device and / or deodorizing device, blower, air conditioner, and intake and outlet of each laboratory to control them. Build a circuit. Regarding the fumigation treatment facility, it is also possible to preset the fumigation gas supply time, the fumigation treatment time, and the fumigation gas removal time, and input the set time schedule in advance to the control computer for automatic operation.

[0010]

The function of the fumigation treatment facility of the present invention during the fumigation treatment will be described below. First, the suction port and the discharge port of the laboratory in which fumigation is to be performed among the plurality of laboratories are opened. This is achieved, for example, by opening the dampers respectively provided between this laboratory and the air supply and exhaust ducts for fumigation. Next, the fumigant gas supply device is operated to send the fumigant gas into the air supply duct for the fumigation process. As a result, the fumigant gas is introduced only into the laboratory where the fumigation process is to be performed, an air flow is generated in the chamber, and the fumigant gas is sent out from the outlet into the exhaust duct for the fumigation process for circulation. During this period, the fumigant gas concentration in the laboratory is detected by the gas detection device, and when the concentration reaches a predetermined value, the dampers are closed to close the suction port and the blowing port, and the fumigation process is performed for a certain period of time. After the fumigation process is completed, the fumigant gas supply device is stopped, the damper is opened again to open the suction port and the blowing port, and the fumigant gas is introduced into the removal device. In the removing device, the fumigant gas component is removed by, for example, the filled oxidation absorbent or adsorbent. The gas leaving the removal device enters the laboratory again through the air supply duct for fumigation treatment,
Circulate. When the gas detection device detects that the fumigant gas concentration in the laboratory reaches the preset allowable concentration, the introduction of the gas to the removal device is stopped, and the removal of the fumigant gas component is completed.

Conditioned air is supplied from an air conditioner to a laboratory that is not in the fumigation process through an air conditioning duct that is provided separately from the fumigation duct. This allows
It is possible to fumigate one or more laboratories while simultaneously air-conditioning the other laboratories.

Further, in the deodorizing treatment equipment of the present invention,
When a bad odor is generated in the air-conditioned laboratory and the concentration of the odor is increased, the odor is detected by the detection means and introduced into the deodorizing device. For example, when a densitometer and a damper that opens and closes in conjunction with the densitometer are used as the detection means, when the odor is detected, the damper opens and the odor is introduced from the laboratory to the deodorizing duct toward the deodorizing device. The gas discharged from the deodorizing device is introduced into the laboratory again by circulating it into the air conditioner and is circulated. While the deodorizing device is operating, the pressure inside the laboratory during deodorization is maintained at the set value by adjusting the blower and damper opening.

[0013]

EXAMPLES The present invention will be described in detail below with reference to examples. FIG.
Is an embodiment of the fumigation treatment facility of the present invention.

The structure of this equipment is as follows. 1
Is an air conditioner, 22a is an air supply duct for air conditioning, and 22b is an exhaust duct for air conditioning. Reference numeral 20a is an air supply duct for fumigation treatment, and 20b is an exhaust duct for fumigation treatment. 11
Reference symbols a to 11c are laboratories such as a bioclean room, which are used while air-conditioned after being fumigated. 9,
10, 12, and 13 are motor dampers, and 10a
-10c is an air supply duct 22a, 12a-12c is an exhaust duct 22b, and 9a-9c is an air supply duct 20a.
3a to 13c respectively connect the exhaust duct 20b and each laboratory. Reference numerals 3 and 6 are motor dampers that are switched between when the fumigant gas is supplied and when it is removed. Reference numeral 5 denotes a fumigant gas supply device, which is connected to the exhaust duct 20b by the motor damper 6 when the fumigant gas is supplied, and supplies the fumigant gas into the laboratory through the air supply duct 20a. 2 is a removing device,
Exhaust duct 20b and motor damper 3 during fumigant gas removal
And removes fumigant gas components in the laboratory through the exhaust duct 20b. The inside of the reactor is filled with pure light (trade name), which is an oxidation absorbent containing potassium permanganate as a main component, and activated carbon. Numeral 4 is a gas detection device, which is set to detect the concentration required for fumigation when supplying fumigant gas and the allowable gas concentration that is harmless to the human body when removing fumigant gas. Detect the component concentration. A blower 7 circulates the fumigant gas or the gas in the laboratory in the air supply duct 20a and the exhaust duct 20b when the fumigant gas is supplied and removed. Reference numeral 8 is a control panel for automatically controlling this equipment.

In the following, an operation in the case of air-conditioning the laboratories 11b and 11c while fumigating the laboratories 11a will be exemplified. Laboratory 11a to be fumigated
As for the motor dampers 10a and 12a,
A, 13a, and 6 are opened, the blower 7, the fumigant gas supply device 5, and the gas detection device 4 are activated, and the fumigant gas is circulated and introduced into the laboratory 11a through the air supply duct 20a. When the gas detection device 4 detects a predetermined gas concentration, the blower 7 and the fumigant gas supply device 5 are stopped, the motor dampers 9a, 13a, and 6 are closed, and the fumigation process is performed for a fixed time. After the fumigation process, the motor damper 9a,
13a and 3 are opened, the blower 7 is started, the gas in the laboratory 11a is put into the exhaust duct 20b from 13a,
The fumigant gas component is removed by the removing device 2. If the gas detector 4 detects the allowable gas concentration set, the blower 7
To stop the motor dampers 9a, 13a and 3 and stop the gas detection device 4. After that, if the motor dampers 10a and 12a are opened, the air conditioning can be started.

Laboratory 11b which has already been fumigated
And 11c, the motor dampers 10b, 10c,
12b and 12c are opened, 9b, 9c, 13b, and 13b are closed, and the conditioned air from the air conditioner 1 is supplied to the laboratories 11b and 1 via the duct 22 for air conditioning.
It is circulated and introduced into 1c.

FIG. 2 shows an embodiment of the deodorizing treatment equipment of the present invention. The structure of this equipment is as follows. Reference numeral 1 is an air conditioner, 22a is an air supply duct for air conditioning, and 22b is an exhaust duct for air conditioning. Reference numeral 11 is a laboratory such as a bio clean room, which is used while air conditioning after the fumigation process is completed.
Reference numeral 10 is an air supply duct 22a, and 12 is a motor damper that connects the exhaust duct 22b and each laboratory 11. Reference numeral 18 is a differential pressure gauge for measuring the pressure difference between the inside and outside of the laboratory 11, and 19 is a sensor for detecting the occurrence of odor. Reference numeral 14 denotes a deodorizing device for removing a bad odor generated in the laboratory 11, and the inside of the reactor is filled with an oxidizing absorbent pure light (trade name) containing potassium permanganate as a main component. Reference numeral 21 is a deodorizing duct for introducing the odor generated in the laboratory into the deodorizing device 14. Reference numeral 13 is a motor damper for connecting the deodorizing duct 21 to each laboratory, and 16 is a motor damper for introducing deodorized air into the air conditioner 1. Reference numeral 7 denotes a blower, which puts the odor in the bioclean room in which a bad odor has occurred into the deodorizing duct 21 and introduces the deodorized air into the air conditioner 1 via the motor damper 16. Reference numeral 8 is a control panel for automatically controlling this equipment.

Of the plurality of laboratories 11, when the odor sensor 19 installed in the laboratory where a bad odor is generated detects the odor, the motor damper 13 is opened, and the blower 7 operates so that the odor enters the deodorizing duct 21. From there, it goes to the deodorizing device 14. At this time, the rotation speed of the blower 7 is gradually increased to increase the air volume, and at the same time, the opening of the motor damper 13 is narrowed to maintain the pressure in the laboratory at the set value. As the odor is removed, the rotation speed of the blower 7 is reduced to reduce the air volume and the opening of the motor damper 13 is increased. When the odor is completely removed, the blower 7 is stopped by returning the opening to a predetermined opening. The gas discharged from the deodorizing device 14 enters the air conditioner 1 from the motor damper 16, returns to the laboratory again, and circulates.

FIG. 3 shows an embodiment in which a deodorizing device is incorporated in the fumigation processing equipment. With such a configuration, the fumigation processing device group including the fumigant gas supply device and the removal device and the deodorizing device can be used by being switched at any time. Further, in this figure, reference numeral 23 functions as an exhaust duct for fumigation during fumigation and as a deodorization duct during deodorization. Instead of this, if fumigation treatment and deodorization ducts are provided separately, it is possible to deodorize one or more laboratories during fumigation treatment and air conditioning in other laboratories while air conditioning occurs. It will be possible to do.

Further, an experiment for investigating the performance of the removing device which constitutes the fumigation treatment equipment of the present invention and the performance of the deodorizing equipment which constitutes the deodorizing equipment was conducted as follows. That is, the oxidizing absorbent and / or activated carbon was filled in the reactors of the removing device and the deodorizing device under each condition, and the chemical gas of each concentration was passed through each device, and the outlet concentration was measured. Oxidized absorber,
Pure Light E or F manufactured by Nippon Kagaku Kogyo Co., Ltd., and crushed activated carbon 4GCX manufactured by Tsurumi Coal were used as activated carbon. Table 1 shows these filling conditions and the results of the removal performance of each gas component. In Table 1, the SV value means the amount of treated air per hour with respect to the volume of the filler. The removal efficiency means the ratio of the value obtained by subtracting the outlet concentration after treatment from the initial concentration to the initial concentration.

[0021]

[Table 1] From the results shown in Table 1, it can be seen that the removing device that constitutes the fumigation treatment facility and the deodorizing device that constitutes the deodorizing facility of the present invention are effective.

[0022]

As described above, in the fumigation treatment facility of the present invention, when a plurality of laboratories which are air-conditioned by the same air conditioning system are individually fumigated, the air-conditioning in the non-fumigated laboratories is interrupted. Since there is no need, the laboratory can be effectively used.

Further, in each laboratory, when a bad odor is generated, it is quickly deodorized, so that it is possible to prevent the odor from spreading to other laboratories.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an embodiment of a fumigation treatment facility of the present invention.

FIG. 2 is a schematic view showing an embodiment of the deodorizing equipment of the present invention.

FIG. 3 is a schematic view showing an embodiment in which a deodorizing device is incorporated in the fumigation treatment equipment of the present invention.

[Explanation of symbols]

 2 Removal device 4 Gas detection device 5 Fumigation gas supply device 11 Laboratory 14 Deodorization device 19 Odor sensor 20a Fumigation air supply duct 20b Fumigation exhaust duct 21 Deodorization duct 22a Air conditioning duct (air supply) 22b Duct for air conditioning (for exhaust)

Claims (2)

[Claims] 1. A plurality of laboratories which have air-conditioning ducts and are used while air-conditioning after fumigation treatment, and air-supply ducts for fumigation treatment which are provided in the laboratories separately from the air-conditioning ducts. And an exhaust duct, a fumigant gas supply device for supplying fumigant gas into the laboratory through the air supply duct, and introducing the gas in the laboratory exhausted into the exhaust duct after completion of the fumigation treatment from the gas. A removal device for removing fumigant gas components, and a gas detection device for detecting the fumigant gas concentration in the gas in the laboratory,
This gas detector stops the fumigant gas supply by detecting a preset gas concentration required for fumigation processing when the fumigant gas is supplied, and removes the fumigant gas by detecting a preset allowable gas concentration when removing the fumigant gas. A fumigation facility comprising means for stopping the introduction of gas into the facility. 2. A plurality of laboratories used while being air-conditioned,
It is characterized by comprising a deodorizing device for removing a bad odor generated in this laboratory, a deodorizing duct for introducing an odor from each laboratory to the deodorizing device, and a means for detecting the occurrence of a bad odor. Deodorization processing equipment.