JPS5937239Y2 - steam sterilizer - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improved structure of the steam sterilizer of the present invention.

This type of sterilizer supplies water into a sterilization tank, generates high-pressure steam in the sterilization tank by generating heat from a heater installed at the bottom of the sterilization tank, and sterilizes the objects stored in the tank with high-pressure steam. However, after the sterilization process is completed, the high-pressure steam in the tank is discharged into the drainage container via the drain pipe.

In order to minimize the sound of high-pressure steam spewing out from the tip of the drain pipe, cooling water is stored in the drain container in advance, and high-pressure steam is jetted into the cooling water to condense it. At the same time, consideration has been given to reducing the ejection noise.

Of course, in order to know the internal pressure inside the sterilization tank, the sterilization tank is equipped with a pressure gauge connected to it, and since the heating heater stops generating heat after the sterilization process is completed, the internal pressure gradually increases without steam generation. decreases.

When the pressure gauge reaches O atmosphere (atmospheric pressure), the lid of the sterilization tank is opened to increase the amount of material to be sterilized, but the lid must be opened after the sterilization process is complete. If the sterilization tank is left as is, the pressure inside the sterilization tank will gradually become negative, and the steel tank will suck up the cooling water stored in the drainage container through the drain pipe, wetting and soiling the sterilized items. Of course, a large amount of water is stored in the sterilization tank, and when the lid is subsequently opened, the water inside spills out to the outside, making it extremely difficult to handle.

The present invention has been devised in view of this point, and one embodiment thereof will be explained below with reference to the drawings.

Reference numeral 1 denotes a sterilization tank having an opening/closing lid 2 on one side, a steam generation heater 3 at the bottom of the sterilization tank, and a mounting shelf 4 on the top surface on which objects to be sterilized (not shown) are placed. Water is poured into the sterilization tank 1 by opening the lid 2 and pouring a predetermined amount of water into the sterilization tank 1 using a measuring cup or the like.

Reference numeral 5 denotes a drain pipe connected to the lowest part of the sterilization tank 1 with an open connection, and is for discharging the high-pressure steam filling the sterilization tank 1 and the hot water remaining at the bottom after the sterilization process is completed.
An on-off valve 6 is interposed in the middle of the tank, and the throttle valve is opened at the time of discharge so that the steam and hot water can be appropriately discharged using the internal pressure inside the tank.

Reference numeral 7 denotes an air vent pipe connected to the upper rear portion of the sterilization tank 1 through an open connection, and as the steam sequentially fills the sterilization tank 1 and the generated steam is generated, the air inside the tank is sequentially discharged with the generated steam.

At the tip of the air vent pipe T, there is provided an air vent valve 8 incorporating a temperature-sensitive automatic closing valve piece (not shown) made of bellows or the like, which closes the throttle valve by itself depending on the temperature of the steam passing through the throttle valve, thereby allowing the steam to flow. This condition is prevented and the inside of the sterilization tank 1 is filled with high-pressure steam generated sequentially.

Of course, the air, steam, etc. that have passed through the air vent valve 8 flow into the exhaust pipe 5 through the communication pipe 9.

Reference numeral 10 denotes a pressure indicator for displaying the internal pressure of the sterilization tank 1, and is provided at a position where it can be visually observed from the outside.

The drain pipe 5 is extended through the on-off valve 6 and led out of the case body 11 surrounding the sterilization tank 1, and its tip 13 is inserted into the drain container 12. Cooling water 14 is stored in advance in the drain pipe, and the distal end 13 of the drain pipe is lowered.

Reference numeral 15 denotes a check valve attached to the tip 13 of the drain pipe 5, which allows the steam and hot water to flow out in the discharge direction after the sterilization process is completed, but does not allow them to flow back.

That is, the cooling water 14 stored in the drainage container in order to reduce the sound of steam and hot water flowing into the drainage container 12 flows backward through the drainage pipe 5 and does not flow into the sterilization tank 1. This is how it was done.

As mentioned above, the steam sterilizer according to the present invention includes a sterilization tank having an opening/closing lid on one side, a steam generation heater disposed at the bottom of the sterilization tank, and a drain pipe connected to the bottom of the sterilization tank with an on-off valve interposed. and a drainage container in which the tip of the drain pipe is submerged in cooling water to store it, and a check valve is attached to the tip of the drain pipe, so that the lid can be opened and closed after the sterilization process is completed. Even if the sterilizer is released without opening the sterilizer, there is no backflow of cooling water in the sterilization tank, making it possible to obtain a sterilizer that is not only sanitary but also easy to handle.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional view of the steam sterilizer according to the present invention. 1... Sterilization tank, 5... Drain pipe, 6...
...Opening/closing valve. 12...Drainage container, 15...Check valve.

Claims (1)

[Scope of utility model registration request] A sterilization tank with an opening/closing lid on one side, a steam generation heater disposed at the bottom of the sterilization tank, a drain pipe connected to the bottom of the sterilization tank with an on-off valve interposed, and the tip of the drain pipe. It consists of a drainage container that is submerged in cooling water that can be stored.
A steam sterilizer characterized in that a check valve is attached to the tip of the drain pipe.