JPS64927Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is 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. Regarding sterilizers.

Conventionally, various measures have been taken to prevent infection during use in safety cabinets where various pathogens are handled and in the rooms in which the safety cabinets are located. There is.

In other words, the culture and planting of bacteria is
If the substance is strong enough to have a negative impact on the human body, there is a risk of causing a serious accident.In order to prevent such a risk from occurring, antibacterial measures such as air curtains are used to prevent the spread of pathogenic bacteria. be.

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. A method devised to meet this expectation is a method in which an aqueous solution of pharmacopoeial formalin or formaldehyde is heated to boiling in the cabinet or room to be sterilized, and the resulting steam is used to sterilize and disinfect.

It is an object of the present invention to provide a sterilizer and sterilizer useful for carrying out such sterilization and sterilization methods.

In other words, the present invention includes a container for storing an aqueous solution of pharmacopoeial formalin or formaldehyde, which is opened upward in a casing, an electric heater that heats the container to boil and evaporate the aqueous solution, and a liquid in the container. It has a built-in heat-sensitive sensor that detects the rise in temperature caused by a burnout and automatically opens the circuit for the electric heater, and furthermore, the upper opening of the container has an air outlet protruding upward in the center. This invention relates to a formalin gas sterilizer characterized by having a lid detachably fitted thereon, and will be described below with reference to an embodiment shown in the drawings.

In the figure, 1 is a casing of a sterilizer, and 2 is a bottomed container for containing an aqueous solution of pharmacopoeial formalin or formaldehyde.

Furthermore, although not shown in the lower part of the container, an electric heater of a known structure is built in to heat the container and boil and evaporate the aqueous solution within the container.

Reference numeral 8 denotes a heat-sensitive sensor installed relatively close to the bottom of the container 2, which detects a rise in temperature due to liquid shortage in the container and automatically opens the circuit (disconnection) of the power to the electric heater. In addition, two heat-sensitive sensors 8 are provided in this embodiment 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 in the center thereof, which communicates with the inside and outside for blowing out steam.

In this embodiment with the above configuration, when using the system, prepare a pharmacopoeia formalin aqueous solution or formaldehyde aqueous solution, then measure the volume in the safety cabinet or room where sterilization is to be performed,
Based on this volume, the required amount of the above-mentioned pharmacopoeial 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 . Next, place the gas sterilizer containing this aqueous solution in the safety cabinet or room, connect the plug 7 to the outlet, and then press the switch 3 to turn on the electric heater built into the casing 1 of the sterilizer. Causes fever.
As a result, the container 2 is heated, and the aqueous solution contained therein is vaporized and sucked out from the outlet 6. At this time, the aqueous solution such as pharmacopoeial formalin will boil in the container 2, but because of the lid 5, the hot water droplets will not scatter, and only steam will be accumulated in the upper part of the container 2 in a compressed state.
As a result of the steam being vigorously ejected upward from the air outlet 6, the steam quickly spreads from the upper part to the lower part of the safety cabinet or room. This ejected vaporized gas contains vaporized formalin, which sufficiently sterilizes and disinfects the safety cabinet or room.

As explained above, the present invention involves heating and boiling an aqueous solution of pharmacopoeial formalin or formaldehyde,
The vaporized gas is used to sterilize and disinfect.
By applying this to a room where pathogenic microorganisms have adhered or are full of pathogenic microorganisms after using the safety cabinet, it is not only possible to completely sterilize the room, but also to sterilize the container. Since the upper opening is fitted with a lid with an outlet in the center that protrudes upward, there is no risk of hot water droplets scattering when the aqueous solution boils, and only steam is released. Steam is accumulated in a compressed state in the upper part of the container 2 and is vigorously ejected upward from the outlet, so that the steam is rapidly diffused from the upper part to the lower part of the room.

Furthermore, due to the presence of a heat-sensitive sensor, the power to the electric heater is automatically turned off as soon as the liquid, such as the pharmacopoeial formalin aqueous solution, runs out, so there is no need for workers to constantly monitor it, and furthermore, vaporized formalin can affect the human body. Never.

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, making it extremely safe. 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. It is possible to provide a simple and compact sterilizer without any problems.

[Brief explanation of the drawing]

The drawing is a perspective view showing an embodiment of 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)

[Scope of utility model registration request] A container for storing an aqueous solution of pharmacopoeial formalin or formaldehyde, which is opened upward to the casing, an electric heater that heats the container and boils and evaporates the aqueous solution, and an electric heater that prevents the temperature from rising due to liquid shortage in the container. It has a built-in heat-sensitive sensor that detects the power and automatically opens the electric heater's power supply.
Furthermore, the formalin gas sterilizer is characterized in that the upper opening of the container is removably fitted with a lid having an upwardly projecting outlet in the center.