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Heating control method for pressure steam sterilizer

A technology of heating control and pressure steam, which is applied to auxiliary controllers with auxiliary heating devices and temperature control by electric means, which can solve the problems of large temperature fluctuations, long operation time, and no steam generated by the steam generator. , to achieve the effect of small temperature fluctuation, avoiding no steam for a long time, and avoiding supersaturated steam

Active Publication Date: 2013-07-31
NINGBO YESON MEDICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heating control of the existing pressure steam sterilizer adopts the proportional integral differential algorithm to control the temperature of the steam generator. The existing problems are: the control has a large delay, and the temperature is difficult to control when the temperature rises suddenly to the sterilization process. During the sterilization process, the temperature fluctuates greatly, resulting in incomplete sterilization; in addition, since a fixed control point is used to control the temperature of the steam generator, if the temperature is lower than the control point, the steam generator may not generate steam for a long time to increase the temperature The situation, the whole running process takes a long time

Method used

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  • Heating control method for pressure steam sterilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: A heating control method for a pressure steam sterilizer, the working temperature T0 set by the sterilizer is 134°C, the temperature in the sterilization chamber 1 detected by the temperature sensor 9 is T1, and the temperature sensor 10 detects The temperature of the outer wall of the sterilization chamber 1 is T2, the temperature inside the steam generator 6 detected by the temperature sensor 8 is T3, and the set temperature is T4=10°C, T5=100°C, T6=20°C, T7=165°C , T8=5℃, T9=6℃, T10=155℃;

[0024] The heating method comprises the following steps:

[0025] 1) Heating control of heating element 2 on the wall of the sterilization chamber:

[0026] a) If T2≤T0-T4, that is, T2≤124°C, the controller 7 controls the heating element 2 on the outer wall of the sterilization chamber to energize periodically, the energization period is 2s, and the duty ratio is 0.5, that is, energization is 1s in one cycle, Power off for 1s;

[0027] b) If T2>T0-T4, that is, T2>124...

Embodiment 2

[0037] Example 2: A heating control method for a pressure steam sterilizer, the working temperature T0 set by the sterilizer is 127°C, the temperature in the sterilization chamber 1 detected by the temperature sensor 9 is T1, and the temperature sensor 10 detects The temperature of the outer wall of the sterilization chamber 1 is T2, the temperature inside the steam generator 6 detected by the temperature sensor 8 is T3, the set temperature is T4=6°C, T5=110°C, T6=14°C, T7=155°C, T8=8℃, T9=7℃, T10=160℃;

[0038] The heating control method comprises the following steps:

[0039] 1) Heating control of heating element 2 on the wall of the sterilization chamber:

[0040] a) If T2≤T0-T4, that is, T2≤121°C, the controller 7 controls the heating element 2 on the outer wall of the sterilization chamber to energize periodically, the energization period is 1s, and the duty ratio is 0.4, that is, energization is 0.4s in one cycle , power off for 0.6s;

[0041] b) If T2﹥T0-T4, that is,...

Embodiment 3

[0051] Example 3: A heating control method for a pressure steam sterilizer, the working temperature T0 set by the sterilizer is 105°C, the temperature in the sterilization chamber 1 detected by the temperature sensor 9 is T1, and the temperature sensor 10 detects The temperature of the outer wall of the sterilization chamber 1 is T2, the temperature inside the steam generator 6 detected by the temperature sensor 8 is T3, and the set temperature is T4=0°C, T5=120°C, T6=6°C, T7=180°C, T8=10℃, T9=10℃, T10=150℃, including the following steps:

[0052] 1) Heating control of heating element 2 on the wall of the sterilization chamber:

[0053] a) If T2≤T0-T4, that is, T2≤105°C, the controller 7 controls the heating element 2 on the outer wall of the sterilization chamber to be energized periodically, the energization period is 2s, and the duty ratio is 1, that is, it is always energized;

[0054] b) If T2﹥T0-T4, that is, T2﹥105°C, the controller 7 controls the heating element 2 on t...

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Abstract

The invention discloses a heating control method for a pressure steam sterilizer. Working temperature T0 set by the sterilizer is 105-134 DEG C; temperature in a sterilizing chamber (1), which is detected by a temperature sensor (9), is T1; the temperature of the outer wall of the sterilizing chamber (1), which is detected by a temperature sensor (10) is T2; temperature in a steam generator (6), which is detected by a temperature sensor (8), is T3; temperature T4 is set as 0-10 DEG C, T5 is set as 100-120 DEG C, T6 is set as 6-20 DEG C, T7 is set as 155-180 DEG C, T8 is set as 5-10 DEG C, T9 is set as 5-10 DEG C, and T10 is set as 150-160 DEG C. The heating control method comprises the following steps: (1) controlling to heat a heating element (2) on the outer wall of the sterilizing chamber; and (2) controlling to heat the steam generator (6). Compared with the prior art, the heating control method disclosed by the invention has the advantages that: a steam generation device generates saturated steam for sure, and supersaturated steam can be prevented, the phenomenon that the steam is not generated for a long time can be avoided, a heating process smoothly enters a sterilizing process, and temperature fluctuation is little in the sterilizing process.

Description

technical field [0001] The invention relates to the technical field of pressure steam sterilizers, in particular to a heating control method for pressure steam sterilizers. Background technique [0002] The pressure steam sterilizer is a rapid and reliable disinfection and sterilization equipment that uses pressure saturated steam to sterilize items. It is suitable for medical and health services, scientific research, agriculture and other units to sterilize medical devices, dressings, glassware, solution culture media, etc. . The heating control of the existing pressure steam sterilizer adopts the proportional integral differential algorithm to control the temperature of the steam generator. The existing problems are: the control has a large delay, and the temperature is difficult to control when the temperature rises suddenly to the sterilization process. During the sterilization process, the temperature fluctuates greatly, resulting in incomplete sterilization; in additi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/30
Inventor 郑科杰
Owner NINGBO YESON MEDICAL EQUIP
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