JP2583821Y2 - Failure detection device for sterilizer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION A failure detection device for a sterilizer according to the present invention is attached to a sterilizer such as a steam sterilizer or a gas sterilizer that performs a sterilization operation while changing the pressure in a sterilization container. Repairs can be easily performed by detecting the failure of the sterilizer at an early stage.

[0002]

2. Description of the Related Art When sterilizing textiles such as surgical gowns with a steam sterilizer, for example, the textiles are stored in a sterilized container and sealed, and the pressure in the sterilized container is shown in FIG. To change. That is, by first repeatedly evacuating the inside of the sterilization container, the air in the textile product is discharged,
Steam for sterilization is introduced into the interior of the textile (vacuum process). Next, high-temperature and high-pressure steam is fed into the sterilization container to fill the sterilization container with high-temperature and high-pressure steam, and the fiber product is sterilized (sterilization process). Further, following the sterilization treatment for a predetermined time, the gas in the sterilization container is discharged to evacuate the sterilization container, and then the clean air is sent into the sterilization container and the air is discharged alternately. Dry the treated textile (drying process).

[0003]

As described above, when a sterilizer that performs a sterilization process while changing the pressure in a sterilization container breaks down, a desired sterilization process cannot be performed, or a time required for a sterilization operation is reduced. Becomes too long.

[0004] However, failures that cause such inconveniences do not always occur suddenly but may gradually progress. For example, the speed of feeding steam into the sterilization container decreases with the progress of a failure that results in a poor opening of the steam supply valve of the steam supply device. Further, with the progress of a failure that results in a poor opening of the air supply valve of the clean air supply device, the speed of sending clean air into the sterilization container decreases. Furthermore, the failure rate of the vacuum pump for exhausting the gas in the sterilization container causes the pressure drop speed in the sterilization container to decrease.

[0005] Since such a gradual failure is difficult to find, it is often not noticed until the failure has progressed considerably. If the failure is noticed, the failure progresses considerably, and the trouble and cost required for repair are required. In many cases, it is bulky.

[0006] The failure detection device for a sterilizer of the present invention eliminates such inconvenience by making it possible to detect a gradually developing failure at an early stage.

[0007]

The failure detection device for a sterilizer according to the present invention is, like a steam sterilizer or a gas sterilizer,
A sterilizer is provided for performing a plurality of steps of changing the pressure in the sterilization container during each step, and detects that the sterilizer has failed, and notifies that a failure has occurred.

As shown in FIG. 1, the failure detecting device for a sterilizer according to the present invention has a measuring means 1 for measuring a time required for a predetermined pressure change in each stroke, and a measuring means 1 for measuring the time required for the pressure change. Calculating means 2 for inputting the measurement signal sent from the apparatus and calculating the average of the required time in past several times of sterilization work
And a storage means 3 for storing the average value obtained by the arithmetic means 2, and a difference between the average value stored in the storage means 3 and the required time is detected. It comprises a comparator 4 for issuing an alarm signal in the event of the occurrence, and an alarm means 5 for issuing an alarm for notifying the occurrence of a failure based on the alarm signal.

[0009]

In the case of the fault detecting device for a sterilizer of the present invention configured as described above, each time the sterilization operation is performed, the comparator 4 sets the actual pressure to the desired level every time the pressure in the sterilization container changes. The required time required for making a change is compared with the average value stored in the storage means, and when the difference between the actual required time and the average value is equal to or greater than a predetermined value, an alarm notifying of the occurrence of a failure. (For example, lighting of a warning lamp or warning by a warning buzzer). In this case, if necessary, another alarm is issued for each step in which the difference is detected.

For example, as shown in FIG. 2, when a failure is detected in the process of discharging the gas in the sterilization container, a warning is issued to the effect that the gas discharging device including the vacuum pump should be inspected. As shown in FIG. 2, when a failure is detected in the process of feeding steam into the sterilization container, a warning is issued to the effect that the steam supply unit including the steam supply valve should be inspected. Further, as shown in FIG. 2, when a failure is detected in the process of feeding clean air into the sterilization container, a warning to the effect that the clean air supply unit including the air supply valve and the sterilization filter should be inspected is issued. Emit.

[0011]

[Effects of the Invention] The fault detection device for a sterilization device of the present invention is constructed and operated as described above, and therefore, the average value is obtained from the storage means.
By taking out the time value from time to time, it is possible to find a gradual failure at an early stage and repair it. For this reason, it is possible to correct this with a simple operation before a serious failure develops, and it is possible to reduce labor and cost required for repair.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a failure detection device for a sterilizer according to the present invention.

FIG. 2 is a diagram showing a pressure change when a sterilization process is performed by a steam sterilizer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Measurement means 2 Calculation means 3 Storage means 4 Comparator 5 Alarm means

Claims (1)

(57) [Scope of request for utility model registration] 1. A sterilizer for performing a plurality of steps of changing the pressure in a sterilization container during each step, detecting that the sterilizer has failed, and notifying that a failure has occurred. , A failure detection device for a sterilizer,
In each step, a measuring means for measuring a time required for a predetermined pressure change, and a calculation for inputting a measurement signal sent from the measuring means and calculating an average of time required in past plural times of sterilization work Means, a storage means for storing the average value obtained by the calculation means, and a difference between the average value stored by the storage means and the required time is detected, and the difference is equal to or greater than a predetermined value. A failure detection device for a sterilizer, comprising: a comparator that outputs a warning signal in such a case; and an alarm unit that issues an alarm that indicates the occurrence of a failure based on the alarm signal.