JPH023620B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sterilization method used for disinfecting a safety cabinet or a room in which the safety cabinet is placed for the purpose of preventing accidents in handling pathogenic microorganisms.

Conventionally, various types of sterilization and disinfection have been carried out to prevent infection during use in safety cabinets that handle various pathogens and in the rooms in which the safety cabinets are located. has been done.

In other words, culturing and planting bacteria may cause a serious accident if the bacteria has a strong adverse effect on the human body, and air curtains are used to prevent such risks from occurring. This measure prevents the spread of pathogenic bacteria.

Therefore, when the safety cabinet as described above is used, there is relatively little danger because the air curtain provides antibacterial measures.

However, after using the safety cabinet, there is no simple method to sterilize pathogens that have adhered to the safety cabinet or the room in which it is installed. It was hoped that a method of sterilizing the bacteria would emerge.

The present invention meets these expectations, and after using the safety cabinet to handle various pathogens, it can be used to easily sterilize and disinfect the containers, or to sterilize the entire room. It is an object of the present invention to provide a simple and rational sterilization method that can also perform sterilization.

That is, the present invention provides a container with an open top for storing a required amount of an aqueous solution of formalin or formaldehyde, an electric heater that heats the container and boils and evaporates the solution, and Using a formalin gas sterilizer equipped with a built-in thermal processor that automatically turns off the electric heater when the temperature rises, the aqueous solution is evaporated to evaporate the cabinet to be sterilized or
When disinfecting the inside of a room, the capacity of the aqueous solution is set to 30 c.c. per ¹ m3 of the volume to be sterilized, and the upper opening of the container is provided with an air outlet in the center that projects upward. This invention relates to a formalin gas sterilization method in which boiled foamed steam is jetted upward from an outlet under pressure by fitting a lid.

In the following, the specific content of the present invention will be explained based on the illustrated embodiment. The drawing shows a sterilizer sterilizer used for carrying out the present invention, and in the figure, 1 is a casing of the sterilizer, and 2 is a sterilizer casing. It shows a bottomed container containing an aqueous solution of pharmacopoeial formalin or formaldehyde, and the container 2 is connected to the casing 1.
It opens upward and is housed and fixed.

Furthermore, an electric heater (not shown) of a known structure is built in the lower part of the container for heating the container and boiling and evaporating the aqueous liquid in the container.

Reference numeral 8 denotes a heat-sensitive sensor installed relatively close to the bottom of the container 2, which senses the temperature rise due to liquid shortage in the container and automatically opens the circuit (disconnects) the power supply of the electric heater. Moreover, in this embodiment, two heat-sensitive sensors 8 are provided in order to prevent abnormal heating due to a failure of the heat-sensitive sensors 8.

Furthermore, numeral 3 indicates a manual power switch for the electric heater, and numeral 4 indicates a pilot lamp that lights up when the electric heater is energized.

Reference numeral 5 denotes a lid which is removably fitted onto the upper opening of the container 2, and has an outlet 6 projecting upward from the center thereof, which communicates with the inside and outside for blowing out steam.

When carrying out the present invention using the sterilizer with the above configuration, a pharmacopoeial formalin aqueous solution or a formaldehyde aqueous solution is prepared, and then the volume of the safety cabinet or room to be sterilized is measured, Based on this volume, the required amount of formalin aqueous solution or formaldehyde aqueous solution is put into the container 2 at a rate of 30 c.c. per 1 m ³ , and then the opening is closed with the lid 5 . Regarding the amount of aqueous solution used in this case, 30 c.c. per ^1m3 of the area to be sterilized is sufficient for the sterilizing effect, and using more than that will not change the effect and will be a waste. was clarified as a result of the experiment.
Next, place the gas sterilizer containing this water solution in the safety cabinet or room, connect the plug 7 to an outlet, and then press the switch 3 to connect the Make the heater heat up. As a result, the container 2 is heated, and the aqueous solution stored therein is vaporized and accumulated in a compressed state in the container 2, and is turned into foamed steam and is forcefully ejected upward from the outlet 6. do. As a result, steam quickly spreads from the upper part of the safety cabinet or room to the lower part. At this time, an aqueous solution such as pharmacopoeial formalin will boil in the storage container 2, but since there is a lid 5, only foamy steam will be blown out from the blowout 6 without the hot water droplets scattering.
This ejected vaporized gas contains vaporized formalin, which performs sterilization and disinfection.

As explained above, the present invention includes a container with an open top for containing a required amount of an aqueous solution of pharmacopoeial formalin or formaldehyde, an electric heater that heats the container and boils and evaporates the aqueous solution, and Using a formalin sterilizer with a built-in heat-sensitive sensor that senses the temperature rise due to running out of liquid and automatically turns off the power to the electric heater,
When the above-mentioned aqueous solution is evaporated to sterilize a cabinet or a room to be sterilized, the capacity of the aqueous solution is 300 c.c. per 1 m ³ of the area to be sterilized, and the upper opening of the container is By fitting a lid with an upwardly projecting outlet in the center, boiled formalin or foamed vapor of formaldehyde is forced out from the outlet. With the minimum usage of
Moreover, it can be sterilized efficiently, and there is no danger of hot water droplets scattering when the aqueous solution boils, and only steam is accumulated in the container 2 in a compressed state and is vigorously ejected upward from the outlet. As a result, steam is quickly diffused from the upper part of the room to the lower part.

Furthermore, when equipped with a heat-sensitive sensor, the power to the electric heater can be automatically turned off as soon as the pharmacopoeial formalin aqueous solution runs out, eliminating the need for workers to constantly monitor it. has no effect on the

In addition, in this case, by providing multiple heat-sensitive sensors, it is possible to completely eliminate the risk of overheating of the electric heater due to a malfunction of the sensor, which is extremely complete. The worker can also go home immediately with the proposed sterilizer still in place.

Furthermore, since the electric heater is surrounded by a casing along with the container except for the upper opening surface of the container, there is a possibility that rubber work gloves may come into contact with the disinfection equipment and the heat may puncture the gloves. This eliminates problems and allows safe, reliable and efficient sterilization using a simple and compact sterilizer.

[Brief explanation of drawings]

The drawing is a perspective view showing sterilization and disinfection used in implementing the present invention. 1... Disinfector casing, 2... Container, 3...
...Heater energization switch, 4...Pilot lamp, 5...Lid, 6...Air outlet, 8...
heat sensitive sensor.

Claims (1)

[Claims] 1. A container with an open top containing the required amount of pharmacopoeial formalin or formaldehyde aqueous solution;
A formalin gas sterilizer is equipped with a built-in electric heater that heats the container and boils and evaporates the aqueous solution, and a thermal sensor that detects a rise in temperature due to liquid shortage in the container and automatically turns off the power to the electric heater. When the above aqueous solution is vaporized to sterilize a cabinet or room to be sterilized, the capacity of the aqueous solution is determined by the volume of the area to be sterilized (1 m ^{3 )} .
30 c.c. per bottle, and by fitting a lid in the center of the container with a blow-off port projecting upward, the foamed vapor of boiling formalin or formaldehyde can be discharged. A formalin gas disinfection method in which formalin gas is sprayed upward from the outlet.