JPH11342180A - Sterilization device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To directly heat a matter to be sterilized put on a shelf by heat conduction and shorten the preheating time and drying time of a sterilization device by providing the shelf for putting the matter to be sterilized within a sterilization tank, hollowing the shelf, and supplying a heated fluid to the inner part of the shelf. SOLUTION: A plurality of heating pipes 2 are fixed to the outer wall of a sterilization tank 1, and both upper and lower ends thereof are connected to upper and lower headers 3, 4, respectively. A steam supply line is connected to the upper header 3, and an exhaust line 6 provided with a steam trap 5 is connected to the lower head 4. A shelf 9 for putting a matter to be sterilized is arranged within the sterilization tank 1, and it is formed of a plurality of horizontally juxtaposed pipes 10 both ends of which are connected to the heating pipes 2. The steam supplied to the upper header 3 is passed to the heating pipes 2 to heat the sterilization tank 1 form the outside, and the steam is partially passed to the pipes 10 to directly heat the matter to be sterilized on the shelf 9. Accordingly, the matter to be sterilized can be quickly and surely heated and sterilized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a sterilizer such as a steam sterilizer and a gas sterilizer.

[0002]

2. Description of the Related Art A steam sterilization apparatus is an apparatus for supplying a steam after accommodating an object to be sterilized in a sterilization tank and performing a sterilization process by using heat held by the steam. Usually, prior to the sterilization process,
A preheating step is performed to heat the inside of the sterilization tank and the object to be sterilized.
After the sterilization step, a drying step is performed to dry the object to be sterilized.

[0003]

In the preheating step, heating is performed by heat from a steam jacket provided around the sterilization tank. However, since radiant heat transfer is mainly performed, the temperature of the object to be sterilized increases. It takes some time. In the drying step, an operation of evacuating the inside of the sterilization tank and an operation of introducing clean air are performed a predetermined number of times, and at the same time, heating by the steam jacket is also performed. This heating also
Since radiation heat is mainly used, the drying effect by heating is not sufficient. An object of the present invention is to shorten a preheating time and a drying time in a sterilizer.

[0004]

According to the first aspect of the present invention, a shelf for placing an object to be sterilized in a sterilization tank is provided, the shelf is formed in a hollow shape, and a heating fluid is supplied into the shelf. It is characterized by having a configuration.

[0005] The invention according to claim 2 is characterized in that the shelf is constituted by a plurality of pipes.

The invention according to claim 3 is characterized in that the heating fluid is steam.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be applied to a sterilizer such as a steam sterilizer or a gas sterilizer. The sterilization apparatus of the present invention includes a sterilization tank that stores an object to be sterilized. This sterilization tank is provided with a door, and has a configuration that can be hermetically closed by opening and closing the door. A shelf on which the object to be sterilized is placed is provided in the sterilization tank. By forming this shelf in a hollow shape, a configuration is provided in which a heating fluid is supplied to the inside.

[0008] The shelf is formed by arranging a plurality of pipes horizontally and connecting both ends of these pipes. Also,
The shelf may form a hollow portion inside by stacking and joining two iron plates having depressions.

Steam is used as the heating fluid. In a steam sterilizer, steam is used as a heating unit and a sterilizing unit, and in a gas sterilizer, steam is used as a heating unit and a humidifying unit, so that the steam can be used. Also, warm water or the like can be used as the heating fluid.

[0010] According to the above configuration, the object to be sterilized placed on the shelf can be directly heated by heat conduction. Therefore, the amount of heat supplied to the object to be sterilized can be increased, the object to be sterilized can be heated in a short time and surely, and the preheating time and the drying time of the sterilizer can be shortened.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a sterilizer will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing one embodiment of the sterilizer of the present invention, and FIG.
FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 1.

A plurality of heating tubes 2 are fixed to the outer wall of the sterilization tank 1 by welding. The upper end of the heating tube 2 is connected to the upper header 3, and the lower end is connected to the lower header 4.
The upper header 3 is connected to a steam supply line (not shown), and the lower header 4 is connected to a discharge line 6 provided with a steam trap 5. Steam is supplied to the heating tube 2 to heat the sterilization tank 1 from outside.

A door 7 is provided on the front surface of the sterilization tank 1 so that the sterilization tank 1 can be sealed. The sterilization tank 1
A packing 8 is provided around the opening 7 in contact with the door 7.

In the sterilization tank 1, a shelf 9 on which an object to be sterilized is placed is provided. The object to be sterilized can be placed directly on the shelf 9 or can be placed in a storage container such as a cast. The shelf 9 is formed in a hollow shape to supply steam to the inside. In the illustrated embodiment, a plurality of pipes 10 are horizontally arranged side by side, and both ends of these pipes 10 are connected to each other to be integrally formed to constitute the shelf 9. Both ends of the shelf 9 are connected to the heating tube 2.

In the above embodiment, the upper header 3
Supplied through the heating tube 2 reaches the lower header 4. The steam in the heating tube 2 heats the sterilization tank 1 from outside. Condensed water generated by condensing steam in the heating pipe 2 is discharged to the outside through the discharge line 6. Some of the steam in the heating tube 2
And directly heats the object to be sterilized on the shelf 9. Therefore, the temperature rise time of the object to be sterilized is shortened, and the object to be sterilized is heated in a short time and reliably.
The preheating time and drying time of the sterilizer can be greatly reduced.

The shelf 9 is connected to the heating tube 2 without being connected thereto.
It can also be connected directly to an external steam supply means (steam generator). Further, in the sterilization step of supplying steam into the sterilization tank 1, the pipe is used to prevent the pressure in the sterilization tank 1 from becoming high due to excess heat or to prevent saturated steam from becoming overheated steam. The supply of steam to 10 can also be stopped. In this case, an opening / closing valve (electromagnetic valve) is provided at both ends of the shelf 9 to control the supply and stop of steam.

In the above-described embodiment, the heating tube 2 is provided on the outer wall of the sterilization tank 1. However, the sterilization tank 1 may have a double can structure and a so-called steam jacket. Further, instead of the heating tube 2, a planar electric heater may be provided, or a configuration without any heating means may be adopted.

[0018]

According to the present invention, the object to be sterilized placed on the shelf can be directly heated by heat conduction, the amount of heat supplied to the object to be sterilized is increased, and the object to be sterilized is shortened in a short time. Heating can be assured and the preheating time and drying time of the sterilizer can be reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a sterilization apparatus of the present invention.

FIG. 2 is a vertical sectional view taken along line II-II of FIG.

FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 1;

[Explanation of symbols]

 1 Sterilization tank 9 Shelf 10 Pipe

Claims (3)

[Claims] 1. A sterilization apparatus comprising: a shelf (9) on which an object to be sterilized is placed in a sterilization tank (1); and the shelf (9) is formed in a hollow shape, and a heating fluid is supplied into the shelf (9). apparatus. 2. The sterilizer according to claim 1, wherein said shelf is constituted by a plurality of pipes. 3. The sterilizer according to claim 1, wherein the heating fluid is steam.