JP2005272307A - Method for spraying antimicrobial, mildewproofing agent and deodorant and apparatus for spraying the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for spraying an antimicrobial, a mildewproofing agent and a deodorant with which ultrafine particles can rapidly be diffused into the interior of the objective spacial part and spread even to all the corners of the objective spacial part to improve the antimicrobial, deodorant effects and mildewproofing effects by spraying an antimicrobial, mildewproofing agent and deodorant solution comprising a silver component in a state of the ultrafine particles and to provide an apparatus for spraying the same. <P>SOLUTION: The method for spraying the antimicrobial, mildewproofing agent and deodorant is characterized by spraying the antimicrobial, mildewproofing and deodorant solution comprising the silver component selected from the group of metallic silver, silver ions and a silver compound into sprayed particles of 2-5 μm size. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method and a spray device for spraying an antibacterial / antifungal deodorizing solution used in a fixed space such as an automobile, a train or the like, a room, or a hospital. Antibacterial / antifungal / deodorant spraying method and spraying apparatus capable of improving the sterilization / deodorizing effect and antifungal effect by spreading the deodorant quickly to every corner of the target space It is about.

  In recent years, the amount of odorous substances such as ammonia, methyl mercaptan, hydrogen sulfide, acetaldehyde, trimethylamine, and n-butyric acid has been increasing. In particular, odorous substances and influenza that constantly float in cars and trains and hospitals. Antibacterial deodorant measures are taken by diffusing various antibacterial deodorants into the target space against viruses.

  As a means for diffusing the deodorant antibacterial agent, there is a method of spraying various antibacterial deodorant liquids by spraying or aerosol.

  However, these means have a large particle size of about 10 μm to several hundreds of μm diffused in the space, and the weight per particle is relatively heavy. There is a limit. For this reason, even if a large amount of the antibacterial deodorant solution is sprayed into the fixed space, there is a disadvantage that the antibacterial deodorant effect cannot be obtained over the corners of the space.

  Further, for example, as described in JP-A-10-67516, a titanium oxide material is used to decompose harmful gases such as antibacterial agents and nitrogen-containing compounds using a photocatalyst made of titanium oxide. Although known to be used as an antibacterial and deodorant material, in order to utilize a titanium oxide photocatalyst, it is necessary to irradiate with light such as ultraviolet rays, and there is a disadvantage that its use is limited.

JP 10-67516 A

  The present invention has been made in view of the above circumstances, and by spraying the antibacterial / antifungal deodorizing solution containing a silver component in the form of ultrafine particles, the ultrafine particles are quickly diffused into the target space, and the target An object of the present invention is to provide an antibacterial / antifungal / deodorizing agent spraying method and a spraying apparatus that can improve the antibacterial / deodorizing effect and antifungal effect throughout the space.

  As a result of diligent studies to achieve the above object, the present inventors atomized an antibacterial / antifungal deodorizing solution into a water vapor stream using an antibacterial deodorizing solution containing a silver component by a heat vaporization type two-stream spray method. When sprayed with 2 to 5 μm of spray particles, the spray particles can be quickly diffused to every corner of the target room, and the antibacterial and deodorant effects and fungicidal effects can be greatly improved, The present invention has been achieved.

Accordingly, the present invention provides the following antibacterial / antifungal / deodorant spraying method and spraying apparatus.
(1) An antibacterial / antifungal agent characterized by spraying an antibacterial / antifungal deodorizing solution containing a silver component selected from the group consisting of metallic silver, silver ions and silver compounds as a size of 2 to 5 μm spray particles.・ Method of spraying deodorant.
(2) The method for spraying an antibacterial / antifungal / deodorant according to (1), wherein a plant extract is contained in the antibacterial / antifungal deodorant solution.
(3) The antibacterial / antifungal / deodorant according to (1) or (2), wherein the metallic silver is a simple substance having an average particle size of 10 nm or less per particle or a composite having metallic silver supported on a ceramic surface. Spraying method.
(4) A first container for containing purified water, a vaporizing means for vaporizing the purified water, a first nozzle communicating with the first container and the vaporizing means, and an antibacterial, antifungal, deodorant containing a silver component A second container for containing the solution and a second nozzle communicating with the second container, a water vapor flow ejected from the nozzle nozzle of the first nozzle, and an antibacterial, antifungal, deodorant sprayed from the nozzle nozzle of the second nozzle An antibacterial / antifungal / deodorant spraying apparatus characterized by spraying the antibacterial / antifungal deodorizing solution in a size of 2 to 5 μm in size by bringing the antibacterial / antifungal / deodorizing solution into contact therewith.
(5) The antibacterial / antifungal / deodorant spraying device according to (4), wherein the antibacterial / antifungal deodorant solution contains 90% by mass or more of purified water.
(6) The antibacterial / antifungal / deodorant spraying device according to (4) used in an automobile.

  According to the spray method and spray device of the antibacterial / antifungal / deodorant of the present invention, the antibacterial / deodorant effect and the immediate effect of the antifungal effect are excellent.

BEST MODE FOR CARRYING OUT THE INVENTION

  Hereinafter, the present invention will be described in more detail. In the spraying method of the present invention, an antibacterial / antifungal / deodorizing solution containing a silver component selected from the group of metallic silver, silver ions and silver compounds is sprayed in the size of 2 to 5 μm spray particles. It is a feature.

  The metallic silver is preferably a simple substance having an average particle diameter of 10 nm or less per particle or a composite supported on the ceramic surface.

  Silver ions can particularly impart antibacterial properties, and examples include silver nitrate. Moreover, various additives can be mix | blended with silver ion, and it is especially suitable to add a phytic acid etc. as a stabilizer.

  It is preferable to mix various plant extracts in the antibacterial deodorant solution for the purpose of imparting deodorant properties. Examples of various plant extracts include holly mushrooms, drills, camellias, syringae, lilacs, Japanese cypresses, oysters, Japanese oaks, ferns, Japanese pine leaves, black pine leaves, and the like.

  In addition, from the point of having a photocatalytic effect, as a solution for antibacterial / antifungal / deodorant containing a silver component, a combination of silver ions and titanium oxide, or a single or plural silver elements on the surface of titanium oxide fine particles. A supported composite can be employed. For example, metallic silver particles of nanometer size can be dispersed and supported on the surface of titanium oxide particles to effectively exhibit the antibacterial and antifungal properties of metallic silver.

  In the present invention, the size of the spray particles to which the antibacterial / antifungal / deodorant solution is sprayed is 2 to 5 μm, preferably 3 to 4 μm in average particle size. Since the spray particles are 2 to 5 μm, Brownian motion is likely to occur, it can diffuse quickly into the target room, the antibacterial / antifungal deodorant is effectively spread to every corner of the target room, and the antibacterial / deodorant effect or The mold prevention effect can be enhanced. If the spray particles exceed the above range, the self-weight of the fine particles becomes relatively heavy, the residence time floating in the air after injection becomes short, the diffusion effect due to fine particles can not be done quickly, antibacterial deodorizing effect or antifungal effect Improvement cannot be obtained.

  The means for spraying the antibacterial / antifungal / deodorant solution with a particle size of 2 to 5 μm is not particularly limited, but for example, the spray device 1 shown in FIG. 1 is preferably used.

  The apparatus 1 shown in FIG. 1 adopts a so-called heating vaporization type two-flow spraying system, and includes a first container 2, a vaporization means 3, and a first nozzle communicating with the first container and the vaporization means. 4, a second container 5, and a second nozzle 6 communicating with the second container. The tips of the first nozzle 4 and the second nozzle 6 are each formed with a progressively smaller diameter, and have extremely fine nozzle holes 4a and 6a, which are arranged opposite to each other and close to each other. Purified water 7 is accommodated in the first container 2 of the spray device 1, and an antibacterial, antifungal, deodorizing solution 8 containing a silver component is accommodated in the second container 5. The purified water 7 in the first container 2 is vaporized into water vapor by the vaporizing means 3 through the first nozzle 4, and the water vapor is sprayed from the nozzle 4 a, and the antibacterial and antifungal deodorizing solution is contained in the second container 5. 8 is sprayed from the nozzle 6a of the second nozzle and brought into contact with the water vapor flow to atomize the antibacterial / antifungal deodorant solution 8 into the water vapor, and the antibacterial / antifungal deodorant solution is in a state of 2 to 5 μm spray particles. It can be sprayed with.

  The antibacterial / antifungal deodorizing solution 8 filled in the second container 5 is mixed with a silver component selected from the group of metallic silver, silver ions and silver compounds, and if necessary, a plant extract and various additions. An agent, a stabilizer, etc. can be mix | blended. The antibacterial / antifungal deodorizing solution 8 is filled with purified water, and the content of the purified water is preferably 90% by mass or more based on the total mass.

Although there is no restriction | limiting in particular as the said vaporization means 3, Usually, what provided the ceramic heater and the thermistor can be illustrated, The heat | fever provided from a ceramic heater, maintaining a fixed temperature with a thermistor. Thus, the first solution 7 can be vaporized.
Although not shown in FIG. 1, the first solution 7 and the antibacterial / antifungal deodorizing solution 8 in the first container 2 and the second container 5 are transferred to the first nozzle 4 and the second nozzle 6 by an electromagnetic pump. The transfer amount is automatically controlled.

  As described above, the front ends of the first nozzle 4 and the second nozzle 6 have fine nozzle holes 4a and 6a, and the diameters of the fine nozzle holes 4a and 6a are opposed to each other at a predetermined angle. By atomizing the antibacterial / antifungal deodorizing solution 8 sprayed from the nozzle 6a in the water vapor atmosphere sprayed from 4a, the size of the spray particles (average particle diameter) is 2 to 5 μm. Anti-mold / deodorant can be sprayed. The size of the nozzle hole is appropriately selected depending on the injection pressure, but the size of the nozzle hole is 0.3 to 0.6 mm, particularly 0.4 to 0 at 15 to 30 atmospheres and 70 to 90 ° C. .5 mm is preferable.

  The spray amount by the spray device 1 is preferably 3 to 8 ml / min, and particularly preferably 4 to 6 ml / min. By reducing the injection amount per unit as much as possible, the power consumption can be reduced. The cost can be reduced.

  The spraying method and spraying device of the present invention are used in a target space for antibacterial, deodorant, and mold prevention purposes, and are used in cars, factories, beauty salons, entertainment facilities, hot springs / accommodation facilities, etc. It is used in various facilities such as welfare facilities and hospitals, and has excellent antibacterial and deodorizing effects or antifungal effects and sustainability against nosocomial infection countermeasures such as pathogenic bacteria and viruses, odors, and aging odors. is there.

[Example 1 and Comparative Examples 1 and 2]
EXAMPLES Hereinafter, although an Example and a comparative example are shown and this invention is demonstrated concretely, this invention is not restrict | limited to the following Example.

A primary particle having titanium oxide particles having a predetermined nanometer size supported by a large number of metallic silver particles was used as an active ingredient of an antibacterial solution, and the antibacterial solution was sprayed at a predetermined spray particle size. About each spray particle diameter, it was 3 micrometers in the Example, and was 20 micrometers in the comparative examples 1 and 2. Each example was sprayed on a 5 cm × 5 cm square stainless steel plate, and the film thickness and antibacterial performance of the spray coat produced after spraying were examined.
E. coli previously cultured at 37 ° C. for 48 hours in a nutrient medium and having a bacterial count of about 1.0 × 10 ⁵ is used as the test strain. Place the above-mentioned sprayed plate of each case in a petri dish, inoculate the test bacterial species uniformly dispersed in the nutrient medium on it, cover the film and cover it at 37 ° C, humidity of 90% or more for 3 hours, The viable cell count after culturing for 12 hours and 24 hours was measured. The spraying method of Example 1 used the spraying apparatus shown in FIG. 1, and spraying conditions were 20 atm, 80 ° C., and a diameter of 0.4 mm. For Comparative Examples 1 and 2, a general-purpose spray gun was used. The results are shown in Table 1.

  From the results in Table 1, it can be seen that the method of Example 1 sprayed with a spray particle size of 3 μm is superior in antibacterial effect immediately compared to the spray methods of Comparative Example 1 and Comparative Example 2.

It is a schematic explanatory drawing of the spray apparatus of the antibacterial deodorant which showed one Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spraying apparatus 2 1st container 3 Vaporization means 4 1st nozzle 5 2nd container 6 2nd nozzle 7 Purified water 8 Antibacterial, antifungal, deodorant solution 4a nozzle 6a nozzle

Claims (6)

  Antibacterial / antifungal / deodorant characterized by spraying a solution for antibacterial / antifungal deodorization containing a silver component selected from the group of metallic silver, silver ions and silver compounds as the size of spray particles of 2 to 5 μm Spraying method.   The method for spraying an antibacterial / antifungal / deodorant according to claim 1, wherein a plant extract is contained in the antibacterial / antifungal deodorant solution.   The method for spraying an antibacterial / antifungal / deodorant according to claim 1 or 2, wherein the metallic silver is a simple substance having an average particle size of 10 nm or less per particle or a composite having metallic silver supported on a ceramic surface.   Contains a first container for containing purified water, a vaporizing means for vaporizing the purified water, a first nozzle communicating with the first container and the vaporizing means, and a solution for antibacterial, antifungal, deodorant containing a silver component A second nozzle communicating with the second container, a water vapor flow ejected from the nozzle nozzle of the first nozzle, and an antibacterial, antifungal, deodorizing solution ejected from the nozzle nozzle of the second nozzle An antibacterial / antifungal / deodorant spraying device characterized by spraying the antibacterial / antifungal deodorizing solution in a size of 2 to 5 μm spray particles.   5. The antibacterial / antifungal / deodorant spraying device according to claim 4, wherein the antibacterial / antifungal deodorant solution contains 90% by mass or more of purified water. The antibacterial / antifungal / deodorant spraying device according to claim 4 used in an automobile.

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