Method of evaluating elimination of microoganisms and apparatus for evaluating elimination of microorganisms

Inactive Publication Date: 2007-04-26
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0030] Further, a construction is preferable such that the microorganism elimination means and the microorganism sampling means are arranged outside the vertically downward region of the microorganism supply means. Because particulate substances not prepared in a gaseous form in a mist discharged from the microorganism supply means fall in the vertically downward region and its peripheral regions, the microorganism elimination means and the microorganism sampling means are not contaminated with the fallen substances owing to such construction, so that the reliability of the evaluation apparatus can be improved. So as to attain the effect, importantly, the microorganism elimination means and the microorganism sampling means should not be arranged vertically downward the microorganism supply means. By arranging the microorganism supply means an

Problems solved by technology

Additionally, the performance of these filters is insufficient.
Therefore, satisfactory performance has not yet been achieved.
The method is insufficient as the method for eliminating microorganisms.
However, the concentration of microorganisms, which

Method used

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  • Method of evaluating elimination of microoganisms and apparatus for evaluating elimination of microorganisms
  • Method of evaluating elimination of microoganisms and apparatus for evaluating elimination of microorganisms
  • Method of evaluating elimination of microoganisms and apparatus for evaluating elimination of microorganisms

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0153] Example 2 was practiced under the following conditions. For evaluating the elimination microorganisms, the apparatus 10 for evaluating elimination of microorganism shown in FIG. 1 was used. The container 8 of the apparatus 10 for evaluating elimination of microorganism has a size for the inner space of 2.0 m length, 2.5 m width, and 2.7 m height.

[0154] Then, the atmosphere inside the container 8 was set to a temperature of 25° C. and a relative humidity of 42%. Further, the space inside the container 8 was stirred by the stirrer 4. Stirring was conducted by the stirrer 4 at an air flow of 4 m3 / min.

[0155]Escherichia coli were used as the microorganisms. The Escherichia coli in a mist were supplied into the container 8 via the microorganism injection port 5a. Then, Escherichia coli were scattered at a concentration of about 1,000 N / m3 in the container 8.

[0156] Further, the sampler 6 was constituted by using the Biotest Hyton RCS air sampler. The microorganisms were sampled a...

example 3

[0164] Example 3 was practiced under the following conditions. For evaluating the evaluation of microorganisms, the apparatus 10 for evaluating elimination of microorganism shown in FIG. 1 was used. The container 8 of the apparatus 10 for evaluating elimination of microorganisms has a size for the inner space of 2.0 m length, 2.5 m width and 2.7 m height. Then, the atmosphere inside the container 8 was set to a temperature of 25° C. and a relative humidity of 42%.

[0165] Further, in Example 3, comparison was made for the case of stirring and for the case of not stirring the inside of the container 8 which will be described later, and the stirring was conducted by the stirrer 4 at an air flow of 4 m3 / min in the case of stirring the space inside the container 8.

[0166]Cladosporium, a kind of mycete, were used as microorganisms. Cladosporium were supplied into the container 8 as a mist via the microorganism injection port 5a. Then, Cladosporium were scattered at a concentration of abou...

example 4

[0172] Example 4 was practiced under the following conditions. For evaluating the elimination of microorganisms, the apparatus 10 for evaluating elimination of microorganism shown in FIG. 1 was used. The container 8 of the apparatus 10 for evaluating elimination of microorganism has a size for the inner space of 2.0 m length, 2.5 m width and 2.7 m height.

[0173] Then, the atmosphere inside the container 8 was set to a temperature of 25° C. and a relative humidity of 42%. Further, space in the container was stirred by the stirrer 4. Stirring was conducted by the stirrer 4 at an air flow of 4 m3 / min.

[0174]Cladosporium, a kind of mycete, were used as microorganisms. Cladosporium were supplied into the container 8 in a mist form via the microorganism injection port 5a. Then, Cladosporium were scattered at a concentration of about 1,000 N / m3 in the container 8.

[0175] Further, the sampler 6 was constituted by using the Biotest Hyton RCS air sampler. The microorganisms were sampled at 40...

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PUM

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Abstract

The sterilizing effect of particle irradiation on microorganisms for the sterilizing treatment thereof can be evaluated. The evaluation can be done by supplying microorganisms in the space inside a container (8), allowing particles (7) for the sterilizing treatment of microorganisms to irradiate the microorganisms, sampling the microorganisms by a sampling means (6) after the irradiation of the particles (7) and measuring the sampled microorganisms. The microorganisms as the subject for the sterilizing treatment can be a combination of one or more members selected from the group consisting of bacteria, mycete, viruses and allergens. As the particles, for example, positive ions, negative ions, and gases of positive ions and negative ions in mixture, charged particles such as α rays and β rays, various plasma gas particles, particles such as ozone and radical particles, and particles of chemical agent can be used.

Description

TECHNICAL FIELD [0001] The present invention relates to a method for evaluating elimination of microorganisms so as to evaluate the sterilizing effect on microorganisms suspended in atmosphere and an apparatus for evaluating elimination of microorganisms. BACKGROUND ART [0002] Due to the highly airtight structure in living environment, a demand toward the elimination of microorganisms being suspended in air and hazardous for humans so as to have healthy and cozy life has increasingly grown. So as to satisfy the demand, filters with various antimicrobial agents attached thereon have been developed in recent years. [0003] Because these filters are of a method to aspirate spatial air of space to filter off atmospheric microorganisms, however, these filters should essentially be maintained during long-term use, for example, by a filter exchange. Additionally, the performance of these filters is insufficient. Therefore, satisfactory performance has not yet been achieved. The method is in...

Claims

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Application Information

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IPC IPC(8): C12Q1/22A61L2/00A61L2/28A61L9/18A61L9/22C12M1/12C12M1/26G01N31/22
CPCA61L2/0011A61L2/28A61L9/18A61L9/22C12Q1/22A61L2/0029C12M37/06C12M1/12C12Q1/04C12Q1/06
Inventor NISHIKAWA, KAZUO
Owner SHARP KK
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