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Steam sterilizer and sterilization process

A technology of sterilizer and steam, which is applied in the field of negative pressure low-temperature steam sterilizer and disinfection process, steam sterilizer and disinfection process, can solve the problems that negative pressure low-temperature disinfection cannot be realized, achieve good disinfection effect, ensure uniformity, temperature Controlling the effect of stabilization

Active Publication Date: 2013-11-20
SHINVA MEDICAL INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] According to Antoine's formula, when the temperature of saturated steam is lower than 100°C, the relative pressure of saturated steam is negative pressure, that is, lower than atmospheric pressure, while conventional vacuum sterilizers and sterilization processes cannot achieve negative pressure and low temperature sterilization

Method used

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  • Steam sterilizer and sterilization process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 , figure 2 As shown, the sterilization chamber of the present invention includes a front door 27, a rear door 28, and an interlayer 2. The space surrounded by the three forms an inner chamber 1. A steam channel is provided in the interlayer 2. The interlayer 2 is respectively connected to the interlayer steam inlet system and the interlayer extraction system through pipelines. Vacuum drainage system, the inner chamber 1 is respectively connected to the inner chamber return system and the inner chamber vacuum drainage system through pipelines, the interlayer 2 is provided with an interlayer safety valve 26, and the interlayer 2 and inner chamber 1 are respectively installed with a pressure sensor 24 and a vacuum pressure gauge 25, to detect the pressure in the interlayer 2 and the inner chamber 1.

[0035] The inner chamber air intake system includes a first pneumatic control valve 3, which is respectively connected to the interlayer 2 and the inner ch...

Embodiment 275

[0051] Embodiment 275 ℃ disinfection procedure:

[0052] In the steam inlet stage of the working process b, the interlayer pressure reaches the predetermined pressure -55KPa;

[0053] In the pulsating emptying stage of the working process d, the inner chamber 1 is filled with saturated steam from the interlayer 2 to a relative pressure of -65KPa in the inner chamber 1, and the number of cycles is 3 times;

[0054] Working process f disinfection stage, steam relative pressure is-65KPa~-60KPa, temperature is 75 ℃~77 ℃, maintains 90min, all the other are the same as embodiment 1.

Embodiment 385

[0055] Example 385°C disinfection program:

[0056] In the steam inlet stage of the working process b, the interlayer pressure reaches the predetermined pressure -33KPa;

[0057] In the pulsating emptying stage of the working process d, the inner chamber 1 is filled with saturated steam from the interlayer 2 to the relative pressure of the inner chamber 1 -43KPa, and the number of cycles is 5 times;

[0058] Working process f disinfection stage, steam relative pressure is -43KPa~-38KPa, temperature is 85 ℃~87 ℃, maintains 30min, all the other are the same as embodiment 1.

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Abstract

The invention relates to a steam sterilizer and a sterilization process, and in particular relates to a negative-pressure and low-temperature steam sterilizer and the sterilization process. The steam sterilizer comprises a sandwich layer and an internal chamber, wherein the internal chamber consists of a space enclosed by a front door, a back door and the sandwich layer; a steam channel is formed in the sandwich layer; the sandwich layer is connected with a sandwich layer steam inlet system through a pipeline; the internal chamber is connected with an internal chamber emptying system through a pipeline; the sandwich layer is communicated with the internal chamber through a pipeline, and a first pneumatic control valve is arranged on the pipeline; the internal chamber is connected with an internal chamber vacuumizing drainage system through a pipeline; and the sandwich layer is connected with a sandwich layer vacuumizing drainage system through a pipeline. The steam sterilization process comprises: (1) vacuumizing; (2) sandwich layer steam inlet; (3) heating; (4) sterilization. The low-temperature steam sterilization of a thermolabile article is realized; by virtue of the internal chamber vacuumizing drainage system, condensed water formed in the sterilization process can be effectively drained, and the steam quality and temperature uniformity of the internal chamber are ensured.

Description

technical field [0001] The invention relates to a steam sterilizer and a disinfection process, in particular to a negative-pressure low-temperature steam sterilizer and a disinfection process, and belongs to the technical field of steam disinfection. Background technique [0002] The use of steam for disinfection and sterilization has a long history, and has successively experienced the era of boiling, original pressure steam disinfection, exhaust disinfection under gravity displacement, pre-vacuum pressure steam sterilizer, and pulsating vacuum pressure steam sterilizer. All of the above types of equipment are sterilized by high-temperature steam above 100°C, which limits the application of steam sterilization on heat-sensitive items such as textiles, wool, plastics, rubber and other items. For example, Patent No. CN102423495A discloses a pulsating steam sterilization process and its steam sterilizer. The sterilization process includes steps such as vacuuming, preheating, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L2/07
Inventor 孙士磊杨雷王鹏飞姜艳锋
Owner SHINVA MEDICAL INSTR CO LTD
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