CN-115617087-B - Method and device for controlling humidity of sterilizer, sterilizer and storage medium

CN115617087BCN 115617087 BCN115617087 BCN 115617087BCN-115617087-B

Abstract

The application relates to the technical field of sterilization equipment, and discloses a method for controlling humidity of a sterilizer, which comprises the steps of detecting pressure in a cavity of the sterilizer; and controlling the sterilizer to stop drying under the condition that the pressure in the cavity and the current humidity meet the drying end condition. And under the condition that the pressure in the cavity and the current humidity meet the drying end condition, controlling the sterilizer to stop drying to reduce the time of the drying stage, wherein the dryness of the sterilizing substance is required. The sterilizer is controlled to stop drying when the dryness of the sterilized substance reaches the requirement, so that the drying efficiency is improved by reducing the drying time of the sterilizer. Meanwhile, after the sterilizer is controlled to stop drying, the sterilizer does not consume power any more, so that the energy consumption of the sterilizer in the drying stage is reduced. The application also discloses a device for controlling the humidity of the sterilizer, the sterilizer and a storage medium.

Inventors

FANG JIXIN
LIU ZHANJIE
ZHANG YUNHE

Assignees

青岛海尔生物医疗科技有限公司
青岛海尔生物医疗股份有限公司

Dates

Publication Date: 20260508
Application Date: 20220920

Claims (9)

1. A method for sterilizer humidity control, comprising: Detecting the intra-cavity pressure of the sterilizer; Detecting a current humidity of the sterilizing substance; Under the condition that the pressure in the cavity and the current humidity meet the drying end condition, controlling the sterilizer to stop drying; The method comprises the steps of determining whether the pressure difference value between the pressure in the cavity and a first set pressure is smaller than or equal to a pressure threshold value, determining whether the current humidity is a humidity critical point or not, and determining whether the current humidity is stable continuously or not under the condition that the current humidity is the humidity critical point or not so as to judge whether the pressure in the cavity and the current humidity meet the drying end condition or not; the method comprises the steps of obtaining a plurality of historical humidities in a first set time, determining the historical humidities smaller than or equal to the set humidities as to-be-selected humidities, determining the maximum humidities in the to-be-selected humidities as target humidities, determining a time difference value between the current humidities and the target humidities, and determining that the current humidities are stable continuously when the time difference value is larger than or equal to a second set time.
2. The method of claim 1, further comprising, after determining whether the current humidity is continuously stable: and under the condition that the current humidity is continuously stable, determining that the pressure in the cavity and the current humidity meet the drying ending condition.
3. The method of claim 2, wherein determining the current humidity as the humidity threshold comprises: Obtaining a previous humidity of the sterilizing substance; detecting the current humidity of the sterilizing substance again after the detection time is passed under the condition that the current humidity is smaller than the previous humidity; and under the condition that the current humidity rises, determining the current humidity as a humidity critical point.
4. A method according to any one of claims 1 to 3, further comprising, after detecting the current humidity of the sterilizing substance: and controlling the sterilizer to perform drying under the condition that the pressure in the cavity and the current humidity are determined not to meet the drying end condition.
5. The method of claim 4, wherein controlling the sterilizer to dry comprises: determining a relationship between the pressure in the cavity and the first and second set pressures; Closing the return air valve and controlling the vacuum pump to operate under the condition that the pressure in the cavity is larger than the second set pressure; And under the condition that the pressure in the cavity is less than or equal to the first set pressure, the vacuum pump is closed and the return air valve is opened.
6. The method of claim 5, wherein controlling operation of the vacuum pump comprises: Determining target power corresponding to the current humidity according to the current humidity; controlling the vacuum pump to operate at a target power; wherein the greater the current humidity, the greater the target power.
7. An apparatus for sterilizer humidity control comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for sterilizer humidity control of any one of claims 1 to 6 when the program instructions are run.
8. A sterilizer comprising the apparatus for sterilizer humidity control of claim 7.
9. A storage medium storing program instructions which, when executed, perform the method for sterilizer humidity control of any one of claims 1 to 6.

Description

Method and device for controlling humidity of sterilizer, sterilizer and storage medium Technical Field The application relates to the technical field of sterilization equipment, in particular to a method and a device for controlling humidity of a sterilizer, the sterilizer and a storage medium. Background At present, the vertical sterilizer is mainly used in hospitals and scientific research institutions, and can be used for rapidly and effectively sterilizing substances. After the sterilization phase is completed, the sterilized material is typically dried to achieve a desired degree of dryness. In the related art, the method for controlling the humidity of the sterilizer comprises the steps of opening a vacuumizing pipeline after sterilization is finished, closing the vacuumizing pipeline after a set point is reached, and opening a steam inlet pipeline to introduce saturated steam after the pressure in a sterilization load lasts for a period of time. At this time, saturated steam can quickly penetrate into the center of the article, so that moisture contained in the interior article is heated, and the moist article is thermally dried. When the pressure in the sterilizing load on the sterilizer body reaches a set pressure value, the vacuumizing pipeline is quickly opened, so that the inside of the sterilizing load is quickly in a vacuum state, and at the moment, excessive water molecules in the articles are quickly flashed into saturated steam. The heat exchange pipeline is quickly opened to quickly discharge saturated steam out of the sterilizer body, and the steam discharging and draining pipeline is quickly opened while the heat exchange pipeline is opened, so that condensed water generated by steam discharging is quickly discharged out of the sterilizer body through the steam discharging and draining pipeline. In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: the method can dry the sterilized material by vacuumizing and heating. But each step needs to be performed in a fixed time cycle during the drying process. Even if the sterilizing substances have reached the drying requirements, the drying process is still carried out, resulting in an inefficient drying. Disclosure of Invention The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows. Embodiments of the present disclosure provide a method and apparatus for sterilizer humidity control, a sterilizer, and a storage medium to improve drying efficiency by reducing a drying time of the sterilizer. In some embodiments, the method includes detecting an intra-cavity pressure of the sterilizer, detecting a current humidity of the sterilizing substance, and controlling the sterilizer to stop drying if it is determined that the intra-cavity pressure and the current humidity satisfy a drying end condition. Optionally, determining that the intra-cavity pressure and the current humidity meet the drying end condition comprises determining a pressure difference value between the intra-cavity pressure and a first set pressure, determining whether the current humidity is a humidity critical point or not under the condition that the pressure difference value is smaller than or equal to a pressure threshold value, determining whether the current humidity is stable continuously or not under the condition that the current humidity is the humidity critical point, and determining that the intra-cavity pressure and the current humidity meet the drying end condition under the condition that the current humidity is stable continuously. Optionally, determining the current humidity as the humidity critical point comprises obtaining a previous humidity of the sterilizing substance, detecting the current humidity of the sterilizing substance again after the detection time is elapsed under the condition that the current humidity is smaller than the previous humidity, and determining the current humidity as the humidity critical point under the condition that the current humidity rises. Optionally, determining that the current humidity is continuously stable comprises obtaining a plurality of historical humidities in a first set time, determining the historical humidities smaller than or equal to the set humidities as the to-be-selected humidities, determining the maximum humidities in the to-be-selected humidities as the target humidities, determining a time difference value between the current humidities and the target humidities, and determining that the current humidity is continuously stable when the time difference value is larger than or equal to a second set time. Optionally, after de