CN102106340A - fumigation device - Google Patents

Abstract

The present invention relates to a smoking device, which has a bottomed cylindrical outer container (10) filled with a fumigant (30) and a heating agent disposed inside the outer container (10) and filled with heat generated by hydration reaction. (22) In the inner container (20), the outer peripheral surface (20a) of the inner container (20) is spaced from the inner peripheral surface (10b) of the outer container (10), and the base material of the outer container (10) has Thermal insulation, and its inner peripheral surface (10b) is covered with infrared reflective material. Preferably, the fumigant (30) is filled between the inner peripheral surface (10b) of the outer container (10) and the outer peripheral surface (20a) of the inner container (20). The fumigating device of the present invention can fully volatilize the medicine, suppress the temperature rise of the outer peripheral surface of the container, and is easy to operate.

Description

fumigation device

technical field

The present invention relates to smoking devices.

This application claims priority based on Japanese Patent Application No. 2009-298044 filed on December 28, 2009 and Japanese Patent Application No. 2010-277298 filed on December 13, 2010, the contents of which are incorporated herein.

Background technique

Fumigation devices are widely used to drive away sanitary pests such as flies, mosquitoes and cockroaches, as well as harmful organisms such as microorganisms such as bacteria and mildew. The fumigant has a fumigant or a fumigant (hereinafter referred to as a fumigant), and a device (heating device) for heating the fumigant. The main component of the fumigant is an exothermic base mixed with various combustion agents, foaming agents, etc., and a drug as an active ingredient. This kind of fumigation device burns or decomposes the exothermic base agent through the heating device, so that the generated combustion heat or decomposition heat makes the agent gasify, releases it into the air and spreads it. Alternatively, the vaporized agent is released into the air and diffused in a short time by the action of the gas or smoke particles generated by the decomposition of the exothermic base agent (hereinafter, release of the agent into the air and diffusion is referred to as volatilization). The chemical agent thus volatilized is an excellent agent capable of controlling harmful organisms and the like.

As the exothermic base of fumigant, generally, nitrocellulose, azodicarbonamide, p,p'-oxybisbenzenesulfonyl hydrazide, N,N'-dinitrosopentamethylenetetramine wait. Among them, azodicarbonamide is currently the most widely used as an excellent foaming agent for fumigants. For example, there is a proposal to heat a composition mixed with an insecticide and azodicarbonamide by means of indirect heating through the hydration reaction heat of calcium oxide, etc., and to volatilize the agent by generating gas through the decomposition of azodicarbonamide. Smoker (for example, patent documents 1-2), and for practical use.

Generally, the fumigant in the smoking device can be heated by using a match to ignite a part of the fumigant to burn it, or by using heat of hydration reaction of a heating agent such as calcium oxide to heat the fumigant. As described above, since the smoking device utilizes the combustion of the exothermic base in the fumigant, etc., a non-combustible container is used. Metal cans such as aluminum and tin plate are generally used as nonflammable containers. Recently, TFS (tin free steel), which does not use tin, has been used as an alternative to tin-plated steel. In this way, by making the container metallic, it is possible to prevent the container from igniting during smoking, deforming after heating, and the like.

On the other hand, from the viewpoint of reducing the environmental load, there is an attempt to make the container of the smoking device to be made of paper. For example, there is a proposal to put a smoker in a paper container or a paper smoke container with an aluminate (Almilamine) lid (for example, Patent Document 3). In addition, there are also proposals, for example, a self-heating device that includes an outer container that contains a heat-generating substance and an inner container that is placed inside the outer container and contains a substance to be heated, and the wall material of the outer container is composed of a paper layer, a synthetic resin layer, and a metal layer. (eg, Patent Document 4). Since paper has a lower thermal conductivity than metal, evaporation of the agent may not be sufficient. Therefore, in Patent Documents 3 and 4, the thermal conductivity of paper is compensated by using a metal material for a part of the container.

[Patent Document 1] Japanese Patent Publication No. 58-28842

[Patent Document 2] Japanese Patent Publication No. Sho 59-49201

[Patent Document 3] Japanese Patent Laid-Open No. 6-7065

[Patent Document 4] Japanese Patent Laid-Open No. 2000-350547

Contents of the invention

However, the exothermic temperature of the heating agent is high temperature, especially the exothermic temperature of the hydration reaction of calcium oxide can reach 300-400°C. Therefore, when a metal container is used, the outer peripheral surface of the container also reaches 300 to 400° C. due to its high thermal conductivity. On the other hand, if the container is made of paper alone, the outer peripheral surface of the container reaches 300 to 400° C. because the container is in direct contact with the heating agent, although the thermal conductivity of paper is low. In addition, scorching of the outer peripheral surface or deformation of the container may occur. In this way, when the temperature of the outer peripheral surface of the container becomes high, the operation of the fumigation device during or after fumigation becomes troublesome. Therefore, in the traditional smoking device, the main body of the smoking device is repacked into a storage container or the like, so that the outer peripheral surface thereof is not exposed.

Therefore, an object of the present invention is to sufficiently volatilize the chemical agent, suppress the temperature rise of the outer peripheral surface of the container, and provide an easy-to-operate smoking device.

The smoking device of the present invention is characterized in that it has a bottomed cylindrical outer container filled with a fumigant, and an inner container provided inside the outer container and filled with a heating agent that generates heat through a hydration reaction. There is a space between the outer peripheral surface of the device and the inner peripheral surface of the outer container, the base material of the outer container has heat insulation, and the inner peripheral surface is covered with an infrared reflective material.

Preferably, the fumigant is filled between the inner peripheral surface of the outer container and the outer peripheral surface of the inner container. Preferably, the paper base material of the outer container is covered with an infrared reflective material. Preferably, the above-mentioned infrared reflective material is aluminum. Furthermore, it is preferable that a water passage hole through which water flows into the inner container is formed on the bottom surface of the outer container.

According to the smoking device of the present invention, the medicine can be sufficiently volatilized, the temperature rise of the outer peripheral surface of the container can be suppressed, and the operation is easy.

Description of drawings

[ Fig. 1] Fig. 1 is a cross-sectional view showing a smoking device according to a first embodiment of the present invention.

[ Fig. 2 ] A cross-sectional view showing a smoking device according to a second embodiment of the present invention.

[ Fig. 3] Fig. 3 is a cross-sectional view showing another example of the smoking device according to the first embodiment of the present invention.

Symbol Description

8. 100 fuming device

10, 110 outer container

10a, 110a The outer peripheral surface of the outer container

10b, 110b The inner peripheral surface of the outer container

20, 120 inner container

20a, 120a The outer peripheral surface of the inner container

22 heating agent

30 Smoker

117 water hole

Detailed ways

The smoking device of the present invention will be described with reference to the following embodiments.

(first embodiment)

A smoking device according to a first embodiment of the present invention will be described with reference to FIG. 1 . Fig. 1 is a cross-sectional view of a smoking device 8 according to a first embodiment of the present invention. The smoking device 8 has an outer container 10 and an inner container 20 .

The outer container 10 is roughly composed of a substantially cylindrical side wall 12 , a lid 14 provided on the top side of the side wall 12 , and a bottom 16 provided on the bottom side of the side wall 12 . The cover part 14 is formed with a smoke vent 15 through which the vaporized medicine flows out. The outer container 10 is made of a heat-insulating base material, and its inner peripheral surface 10b is covered with an infrared reflective material, and has a double-layer structure.

The outer container 10 is provided with an inner container 20 filled with a fumigant 30 and a heating agent 22 , which are connected through the inner container 20 .

The inner container 20 is in the shape of a truncated cone whose diameter gradually increases from the cover 14 to the bottom 16 of the outer container 10 , and one side of the bottom 16 is an opening. The periphery of the opening of the inner container 20 is in contact with the bottom 16 and in contact with the inner peripheral surface 10 b of the outer container 10 . The inner container 20 is buried in the fumigant 30 , and the heating agent 22 is filled in the inner container 20 . Thus, the outer peripheral surface 20a of the inner container 20 is spaced from the inner peripheral surface 10b of the outer container 10 by the length _D1 from the periphery of the top surface of the inner container to the inner peripheral surface 10b of the outer container 10 . The inner diameter of the outer container 10 on the same surface as the top surface of the inner container is represented by inner diameter _D10b . A fumigant 30 is filled between the outer peripheral surface 20 a of the inner container 20 and the inner peripheral surface 10 b of the outer container 10 .

As a material of the side wall part 12, the laminated body which provided the film or layer of an infrared reflection material on the surface of a base material is mentioned. The infrared reflective material refers to a material having a reflectance (under an environment of 25° C.) of 70% or more at a wavelength of 1000 nm.

The infrared reflectance can be measured according to JIS K5602.

Examples of the infrared reflective material include metal foils such as aluminum, copper, stainless steel, silver (Ag), nickel-chromium (Ni—Cr), or metal vapor-deposited films. Alternatively, there may be heat-reflecting glass in which a resin film formed with these metal vapor-deposited films is bonded to a glass substrate. Among them, a metal foil or a metal vapor-deposited film is preferable from the viewpoint of infrared reflection efficiency and ease of manufacture. Moreover, as a material of the said metal foil or the said metal vapor-deposited film, it is preferable that an infrared reflectance is 80 % or more, and it is more preferable that it is 90 % or more. Examples of such a material include aluminum, silver, and the like, and among them, aluminum, which is easy to process and inexpensive, is preferable.

The substrate covered with the infrared reflective material is not particularly limited, and may be determined, for example, according to the heat generation temperature of the heating agent. For example, when calcium oxide is used as the heating agent, the exothermic temperature of its hydration reaction can reach 300-400°C. Therefore, the base material should be selected from a material that does not melt even at such a temperature.

In addition, it is preferable to use a heat insulating material as the base material. With thermal insulation, it refers to the thermal insulation index - the thermal conductivity is below 50%. The thermal conductivity of the material used as the base material is preferably 40% or less, more preferably 30% or less. If it is 50% or less, the temperature rise of the outer peripheral surface of the side wall portion 12 can be further suppressed while effectively volatilizing the medicine.

The thermal conductivity of the substrate can be measured, for example, by the method shown below.

The heating surface of the heater (CORNING PC-400D (manufactured by Taitec Co., Ltd.)) was brought into contact with the pyroelectric body A (CS-11E-010-1-TC1-AMP, manufactured by Anritsu Co., Ltd.), and the heater was heated to 300°C.

A substrate in the shape of a flat plate (40 mm×40 mm) was used as a sample, and a pyroelectric body B (ST-11E-015, manufactured by Anritsu Corporation) was attached to one surface of the sample. The other surface of the sample was brought into contact with the heating surface of the heater, and pyroelectric body A and pyroelectricity were recorded with Thermologa (trade name; a temperature measurement, recording, and analysis device) (AM-8000E, manufactured by Anritsu Co., Ltd.). The temperature measured by body B. The thermal conductivity was calculated from the following formula (1) using the measurement results obtained after the heating surface of the heater was in contact with the sample for 1 minute.

Thermal conductivity (%) = sample surface temperature (°C) / heater temperature (°C) × 100 ... (1)

Such materials include, for example, paper materials such as paper or paper shaped products, non-woven fabrics such as pulp or cotton, wood materials such as cork, or polyethylene, polypropylene, etc. , polyester and other resin layer laminates, ceramics, etc. Among them, the base material is preferably made of paper or wood, more preferably made of paper. By using a material made of paper or wood with low thermal conductivity as the base material, the temperature rise of the outer peripheral surface 10 a of the outer container 10 can be reduced. In addition, if it is made of paper, processing is easy.

The concept of paper includes not only "paper" defined in JIS P0001, but also "board" defined in JIS P0001. That is, "paper" refers to a material made by bonding plant fibers and other fibers. In a broad sense, it includes not only synthetic paper made of synthetic polymer materials, but also paper added with fibrous inorganic materials. "Board paper" refers to the general term for thicker paper made from wood pulp, old paper, etc. In addition, the concept of paper includes "corrugated cardboard" defined in JIS Z0104 for paper and molded paper products, and substances using pulp as a paper raw material for non-woven fabrics defined in JIS P0001. That is, "corrugated cardboard" refers to a material that is formed into a corrugated core on one or both sides with liner paper (ライナ-paper) attached, and examples include single-sided corrugated cardboard (cardboard with exposed corrugations), double-sided corrugated cardboard, and double-sided corrugated cardboard. Corrugated cardboard (single-pit cardboard), compound double-sided corrugated cardboard (double-pit cardboard), compound double-sided corrugated cardboard (three-pit cardboard). "Non-woven fabric" refers to, without using a loom, by mechanically, chemically, thermally, or a combination of various fibers such as natural, recycled, and synthetic fibers, through the fusion of binders or fibers themselves A sheet-like material made by bonding the constituent fibers to each other.

As the material of the side wall portion 12, corrugated cardboard base paper such as liner paper, white board paper, colored board paper and other cardboard paper, waterproof base paper, paper tube base paper and other miscellaneous board paper, and corrugated cardboard are preferable. This is because cardboard and corrugated cardboard are self-supporting, so they are easy to form and have high thermal insulation properties.

When cardboard is used as the base material, the basis weight of the cardboard is preferably, for example, 200 to 1000 g/m ² , more preferably 400 to 1000 g/m ² . If it is more than 200g/m ² , it not only has the necessary self-supporting property, but also has high heat insulation, which can make the chemical agent evaporate more effectively. If it is below 1000g/ ^m2 , it is easy to form.

When corrugated cardboard is used as the base material, the basis weight of the corrugated cardboard is, for example, double-faced corrugated cardboard (core: A flute), preferably 200 to 1000 g/m ² , more preferably 500 to 1000 g/m ² . If it is more than 200g/m ² , it not only has the necessary self-supporting property, but also has high heat insulation, which can make the chemical agent evaporate more effectively. If it is below 1000g/ ^m2 , it is easy to form.

When cork is used as the substrate, the density of the cork is preferably 0.1 to 0.5 g/cm ³ , more preferably 0.2 to 0.4 g/cm ³ . If it is less than 0.1 g/cm ³ , the strength may be insufficient, and if it exceeds 0.5 g/cm ³ , the heat insulating property may be insufficient.

The thickness of the side wall portion 12 can be determined according to the required strength, heat insulation, etc. of the side wall portion 12 , and is, for example, 1-20 mm.

The material of the cover portion 14 is not particularly limited, for example, the same material as the side wall portion 12, metal or ceramics, etc., wherein, preferably the same as the side wall portion 12, is a film of an infrared reflective material on the base material or laminates of layers.

The size of the smoke-through hole 15 is as long as the gasified medicament can flow out. In addition, the number of smoke passage holes 15 is not particularly limited, and may be determined according to the size of the smoking device 8 or the amount of smoke generated by the fumigant.

The bottom 16 consists of a non-woven fabric. The material of the nonwoven fabric depends on the heat generation temperature of the heating agent and the like, and examples thereof include polyethylene, polypropylene, polyester, pulp, cotton, and the like. The type of nonwoven fabric is not particularly limited, and examples thereof include nonwoven fabrics obtained by known production methods such as spunbond, melt blown, hot rolling, chemical bonding, hydroentanglement, and needle punching.

The inner container 20 can conduct the heat of hydration reaction of the heating agent 22 to the fumigant 30 without melting it. Examples of the material of the inner container 20 include metals such as aluminum, copper, and stainless steel.

The thickness of the inner container 20 can be determined according to the required strength of the inner container 20 and the like, and is preferably 0.1 to 0.5 mm, for example.

The heating agent 22 is a substance that generates heat at any temperature through a hydration reaction with water, for example, calcium oxide (quicklime), magnesium oxide, aluminum chloride, calcium chloride, iron oxide, etc. angle, calcium oxide is preferred.

The filling amount of the heating agent 22 may be determined according to the size of the smoking device 8 or the amount of the fumigant. For example, the mass ratio of heating agent/fumigant is 2-6.5.

The fumigant 30 contains a chemical agent. Chemicals include, for example, insecticides, repellents, attractants, pest repellants such as insect growth regulators, microbe repellents such as antibacterial agents, bactericides, and fungicides, fragrances, and deodorants. Examples of pest repellents include Permethrin (permethrin), Allethrin (allethrin), Resmethrin (resmethrin), Cyphenothrin (phenethrin), Prallethrin (proparthrin), Pyrethroid (pyrethroid)-based agents such as Phenothrin, Fenvalerate, Fenpropathrin, Etofenprox, etc.; Fenitrothion (fenitrothion), Dichlorvos (Dichlorvos) (DDVP), Diazinon (diazinon), Prothiofos (Prothiofos), Vitex (Huang Jing) and other organophosphorus agents; Esters, etc. As the microbial repellant, for example, isophthalonitrile, Procymidone (procymidone), Bayleton (triadimefon), Morestan (mite killing Meng) and other pesticide fungicides; Thiabendazole (thiabendazole), 3-Iodo-2-propynylbutyl carbamate (IPBC), IF-1000 and other environmental sanitation fungicides, etc.

These agents can be used alone or in appropriate combination of two or more.

The amount of chemicals added to the fumigant 30 can be determined depending on the type of chemicals and the like, and is preferably in the range of 1 to 30% by mass, for example. Within the above range, the drug can be effectively volatilized while exhibiting the desired effect of the drug.

In the fumigant 30, an exothermic base may be added as needed. Examples of exothermic bases include known exothermic bases conventionally used in fumigants such as organic foaming agents and burners. Among them, an organic foaming agent is preferable as the exothermic base. As the organic foaming agent, those that are thermally decomposed by heating to generate a large amount of heat and generate carbon dioxide, nitrogen, etc. (hereinafter collectively referred to as gas) can be used. As the organic foaming agent, for example, azodicarbonamide, nitrocellulose, p,p'-oxybisbenzenesulfonyl hydrazide, N,N'-dinitrosopentamethylenetetramine, Azodiisobutyronitrile, etc. Among the organic blowing agents, azodicarbonamide is preferable from the viewpoint of decomposition temperature, gas generation amount, and the like.

These exothermic bases can be used alone or in appropriate combination of two or more.

The amount of the exothermic base to be added to the fumigant 30 can be determined depending on the type of chemical, for example, preferably in the range of 50 to 85% by mass, and more preferably in the range of 60 to 75% by mass. Within the above range, the drug can be effectively volatilized while exhibiting the desired effect of the drug.

Additives such as exothermic aids, stabilizers, binders, excipients, fragrances, and pigments can be added to the smoke agent 30 within the range that does not affect the effects of the present invention. Among them, it is particularly preferable to contain any one or two or more of exothermic aids, stabilizers, binders, and excipients.

Examples of exothermic aids include zinc stearate, magnesium stearate, zinc oxide, magnesium oxide, zinc carbonate, calcium carbonate, urea and the like.

In the fumigant 30, the content of the exothermic aid is preferably 0.1 to 20% by mass, more preferably 0.1 to 15% by mass, of the total mass of the fumigant.

Examples of stabilizers include sorbitan fatty acid esters, dibutylhydroxytoluene, butylated hydroxyanisole, propyl gallate, epoxy compounds (epoxidized soybean oil, epoxidized linseed oil, etc.) wait.

Examples of the binder include methyl cellulose, ethyl cellulose, carboxymethyl cellulose, hydroxypropyl methyl cellulose, hydroxypropyl cellulose, starch, dextrin, hydroxypropyl starch, gelatin, Polyvinyl alcohol, polyvinyl acetate, polyvinylpyrrolidone, sodium polyacrylate, etc.

Examples of the excipient include clay (hydrous aluminum silicate), talc, diatomaceous earth, kaolin, bentonite, white carbon black, calcium carbonate and the like.

The filling amount of the fumigant 30 can be determined according to the size of the space to be smoked, the type and amount of the agent in the fumigant 30 , for example, 10-12.5g per 6-8 grains (10-13m ² ).

The fumigant 30 can be prepared into solid preparations such as powder, granule, and tablet. Solid preparations can be prepared according to the intended dosage form using known production methods. For example, in the case of a granular preparation, it can be produced using known granulated product production methods such as extrusion granulation, compression granulation, stirring granulation, tumbling granulation, fluidized bed granulation, and the like.

As a specific example of the production method of the extrusion granulation method, the components of the fumigant 30 can be mixed with a kneader, etc., and then mixed with an appropriate amount of water. Press or horizontal extrusion granulator to granulate. The above-mentioned granules may be further cut into a predetermined size using a cutter or the like and dried.

Next, taking the case where an organic foaming agent is used as an exothermic base as an example, a smoking method using the smoking device 8 will be described. First, prepare a water storage container filled with water. Then, place the fumigation device 8 statically in the above-mentioned water storage container, and make the bottom 16 immerse in water. When the smoking device 8 is placed in the water storage container, the water permeates the bottom 16 and flows into the inner container 20 . When the inflowing water comes into contact with the heating agent 22, it generates heat through a hydration reaction. The hydration reaction heat generated by the hydration reaction is conducted to the fumigant 30 through the inner container 20 . At this time, since the outer peripheral surface 20 a of the inner container 20 is spaced from the inner peripheral surface 10 b of the outer container 10 , the heat of hydration reaction of the heating agent 22 is hardly transmitted to the outer container 10 . In addition, since the fumigant 30 is filled between the outer peripheral surface 20a of the inner container 20 and the inner peripheral surface 10b of the outer container 10, the heat of hydration reaction of the heating agent 22 is mainly used for the vaporization of the chemical agent or the combustion of the exothermic base agent. Or decomposition (hereinafter referred to as volatile reaction). Therefore, the heat of hydration reaction is used for the volatilization reaction of the fumigant filled between the outer peripheral surface of the inner container and the inner peripheral surface of the outer container, and thus is difficult to be transmitted to the outer container. Furthermore, since the inner peripheral surface 10 b of the outer container 10 is covered with an infrared reflective material, the heat of the hydration reaction is reflected into the outer container 10 . In this way, the hydration reaction heat reflected by the infrared reflective material is not released to the outside of the outer container 10, but is quickly transmitted to the entire fumigant 30.

When the fumigant 30 reaches any temperature, the organic foaming agent decomposes to generate gas while the agent is vaporized. Then, the vaporized medicament and the gas flow out of the smoke vent 15 and diffuse into the air.

As described above, since the outer peripheral surface of the inner container is spaced from the inner peripheral surface of the outer container, the heat of hydration reaction transmitted to the outer container is reduced, and the temperature rise of the outer peripheral surface of the outer container can be suppressed. In addition, since the fumigant is filled between the outer peripheral surface of the outer container and the inner peripheral surface of the outer container, the temperature rise of the outer peripheral surface of the outer container can be further suppressed. In addition, since the base material of the side wall portion of the outer container is made of a material with low thermal conductivity, the temperature rise of the outer peripheral surface of the outer container can be suppressed.

The heat of hydration reaction is accumulated in the outer container through the infrared reflective material, so the fumigant can be rapidly heated to any temperature, so that the agent can be fully volatilized.

In this embodiment, since water flows in from the bottom surface of the outer container, it is possible to heat the heating agent without a complicated structure.

In addition, the shortest length of the interval from the outer peripheral surface of the inner container to the inner peripheral surface of the outer container, when the minimum inner diameter of the outer container on the same surface as the top surface of the inner container is 100, is preferably 1 to 33, more preferably 5 to 25 . By keeping it below 33, the smoke rate is increased. Furthermore, by setting it at 1 or more, the temperature rise of the outer container can be suppressed. If it is within the above numerical range, it is expected to improve the smoke rate and suppress the temperature rise of the outer container.

For example, in the first embodiment, the interval length D ₁ from the outer peripheral surface of the inner container to the inner peripheral surface of the outer container, when the inner diameter D _10b of the outer container on the same surface as the top surface of the inner container is 100, preferably 1 to 33, more preferably 5-25. By keeping it below 33, the smoke rate is increased. Furthermore, by setting it at 1 or more, the temperature rise of the outer container can be suppressed. If it is within the above numerical range, it is expected to improve the smoke rate and suppress the temperature rise of the outer container.

(Second Embodiment)

A smoking device according to a second embodiment of the present invention will be described using FIG. 2 . Fig. 2 is a cross-sectional view of a smoking device 100 according to a second embodiment of the present invention. In addition, the same code|symbol is attached|subjected to the same component as the smoking device 8 of 1st Embodiment, and the description is abbreviate|omitted, and a different part is mainly demonstrated here. That is, the smoking device 100 differs from the smoking device 8 in the shape and installation position of the inner container 120 .

The smoking device 100 has an outer container 110 and an inner container 120 . The outer container 110 is filled with fumigant 30 . The top surface 120b of the inner container 120 is exposed from the fumigant 30 . The inner container 120 is filled with a heating agent 22 .

The outer container 110 is roughly composed of a side wall 12 , a lid 14 provided on the top side of the side wall 12 , and a bottom 116 provided on the bottom side of the side wall 12 . The bottom 116 is formed with a water hole 117 for allowing the water used for the hydration reaction of the heating agent to flow into the inner container 120 .

The shape of the inner container 120 is a cylindrical shape with approximately the same diameter from the top surface 120b to the bottom surface, and the top surface 120b is blocked. The periphery of the bottom surface of the inner container 120 is spaced from the inner peripheral surface 110 b of the outer container 110 . Thus, the outer peripheral surface 120a of the inner container 120 and the inner peripheral surface 110b of the outer container 110 are separated by a distance D ₂ from the periphery of the top surface of the inner container to the inner peripheral surface 110b of the outer container 110 . The inner diameter of the outer container 100 on the same surface as the top surface of the inner container is expressed as inner diameter D _110b . The fumigant 30 is filled between the outer peripheral surface 120 a of the inner container 120 and the inner peripheral surface 110 b of the outer container 110 .

The material of the inner container 120 is the same as that of the inner container 20 .

The inner container 120 has the same thickness as the inner container 20 .

The bottom 116 is provided with a water hole 117 only in the area contacting the heating agent 22 . As such a bottom portion 116 , a bottom portion in which the water passage hole 117 is pierced through a sheet-shaped base material made of paper or metal, and the like are exemplified.

The size of the water hole 117 may be such that water flows into the inner container 120 and the heating agent 22 does not leak out.

According to the smoking device of this embodiment, the distance from the outer peripheral surface of the inner container to the inner peripheral surface of the outer container is substantially uniform from the top surface to the bottom surface of the inner container. Therefore, even if the filling allowance of the fumigant is larger than that of the first embodiment, the heat generated by the heating agent can be equally transmitted to the fumigant.

In addition, in the second embodiment, when the interval length D ₂ from the outer peripheral surface of the inner container to the inner peripheral surface of the outer container is 100 when the inner diameter D _110b of the outer container on the same surface as the top surface of the inner container is 100, it is preferably 1 to 100 Å. 33, more preferably 5-25. By being below 33, the smoke rate increases. Furthermore, by setting it at 1 or more, the temperature rise of the outer container can be suppressed. If it is within the above numerical range, it is expected to improve the smoke rate and suppress the temperature rise of the outer container.

The present invention is not limited to the above-mentioned embodiments.

In the first and second embodiments, the shape of the side wall portion is cylindrical. However, the shape of the side wall portion is not limited thereto, and may be cylindrical. The cylindrical shape means, for example, a cylindrical shape with a circular cross-sectional shape, or an angular cylindrical shape with a polygonal cross-sectional shape. In addition, for example, a shape in which the diameter increases from the top surface to the bottom surface, or a shape in which the diameter of both end surfaces increases in the center may also be used.

In the first embodiment, the inner container is a truncated cone, but the shape of the inner container is not limited thereto. For example, conical shape, polygonal pyramid shape, sub-spherical shape (incomplete spherical shape), cylindrical shape, cubic shape, bag shape, etc. may also be used, for example.

In the second embodiment, the inner container has a substantially cylindrical shape, but the shape of the inner container is not limited thereto. For example, conical shape, polygonal pyramid shape, subspherical shape, truncated conical shape, cubic shape, bag shape, etc. may also be used, for example.

In the first embodiment, the top surface of the inner container is buried in the fumigant, but the installation position of the inner container is not limited thereto, and may be exposed from the fumigant as in the second embodiment. From the viewpoint of improving the heating efficiency of the fumigant and allowing the chemical to volatilize well, the inner container is preferably embedded in the fumigant as in the first embodiment.

In the first embodiment, a nonwoven fabric is used for the bottom, but the bottom is not limited thereto. The bottom may be, for example, plate-shaped paper, metal, or the like having through holes penetrated therethrough, or may be a mesh made of paper or metal. Furthermore, in the first embodiment, the periphery of the opening of the inner container is in contact with the bottom, and in contact with the inner peripheral surface of the outer container. However, the present invention is not limited to this, and as shown in FIG. 3 , the periphery of the opening of the inner container may be in contact with the inner peripheral surface of the outer container between the lid and the bottom of the side wall.

In addition, in the second embodiment, a sheet-shaped bottom having a water passage hole is used only in the region in contact with the heating agent. However, the bottom is not limited thereto. For example, non-woven fabrics may be used instead of forming water holes only in the area in contact with the heating agent.

In the first and second embodiments, the bottom of the outer container is provided with a water hole, which is configured to allow water to flow into the inner container to generate a hydration reaction of the heating agent. However, the present invention is not limited thereto, and a container for simultaneously storing heating agent and water may be provided in the inner container, and water may be released from the above-mentioned container during smoking. When such a heating part is used, it is not necessary to have a water-permeable material such as non-woven fabric or a member provided with a water-through hole.

In the second embodiment, the top surface of the inner container is blocked. However, the present invention is not limited thereto. For example, an opening may be provided in a part of the top surface of the inner container, and water may be injected from the opening during smoking.

In the first and second embodiments, one inner container is provided in the outer container. However, the present invention is not limited thereto, and two or more inner containers may be provided.

In the first and second embodiments, the outer container is provided with a lid portion in which a smoke passage hole is formed. However, the outer container may not be provided with a lid, and may have an open top surface.

In the first and second embodiments, the fumigant is filled between the outer peripheral surface of the inner container and the inner peripheral surface of the outer container. However, the present invention is not limited thereto, and the fumigant may not be filled between the outer peripheral surface of the inner container and the inner peripheral surface of the outer container.

Example

The following examples illustrate the present invention in more detail, but the present invention is not limited thereto.

(using raw materials)

[fumigant]

<potion>

・Permethrin (permethrin): Examine (trade name), manufactured by Sumitomo Chemical Co., Ltd.

<Heat-generating base>

・Azodicarbonamide (ADCA): Daiburo AC.2040 (C) (trade name), manufactured by Dainichi Seika Co., Ltd.

<Heat Auxiliary>

・Zinc oxide: Japanese Pharmacopoeia zinc oxide, true specific gravity 5.6g/cm ³ (20°C), manufactured by Sakai Chemical Industry Co., Ltd.

<Adhesive>

· Hydroxypropylmethylcellulose (HPMC): Metros 60SH-50 (trade name), manufactured by Shin-Etsu Chemical Co., Ltd.

<Excipient>

· Clay: NK-300 (trade name), manufactured by Showa KDE Co., Ltd.

[heating agent]

・Calcium Oxide: According to the method described in "Japanese Patent Laid-Open No. 01-308825", in the absence of carbon dioxide, heated hydrated lime at 600°C for 4 hours and dehydrated it. calcium.

[Smoke device]

<Substrate of side wall part>

The materials used for the side wall portion of the smoking device of each example are as follows.

"Pattern 1"

· Outer layer (substrate): liner paper, thickness 1.3mm, basis weight 400g/m ² , thermal conductivity: 44.7%

Inner layer: aluminum foil, thickness 9μm, infrared reflectivity: 94%

"Pattern 2"

Outer layer (base material): corrugated cardboard, double-sided corrugated cardboard (outer surface and inner surface: basis weight 180g/m ² , center core: basis weight 160g/m ² , A flute), thickness 5mm, basis weight 520g/m2 m ² , thermal conductivity: 25.5%

Inner layer: aluminum foil, thickness 9μm, infrared reflectivity: 94%

"Pattern 3"

· Outer layer (substrate): cork, thickness 2mm, density 0.24g/cm ³ , thermal conductivity: 31.5%

Inner layer: aluminum foil, thickness 9μm, infrared reflectivity: 94%

"Pattern 4"

·Single layer: liner paper, basis weight 400g/m ² , thermal conductivity: 44.7%

"Pattern 5"

・Single layer: TFS, thickness 0.25mm, infrared reflectivity: 72%, thermal conductivity: 62.5%

<cover>

"Pattern 1"

Use liner paper (basis weight: 400g/m ² ) as the material, set a φ9mm smoke hole (central smoke hole) in the center of the above material, and then set four φ6mm smoke holes at equal intervals around the central smoke hole. smoke hole.

<bottom>

"Pattern 1"

Using liner paper (basis weight: 400g/m ² ) as the material, set a φ9mm water hole (central water hole) in the center of the above material, and then set four φ6mm water holes at equal intervals around the central water hole. water hole.

"Pattern 2"

Paste non-woven fabric (thickness 0.7mm) on a plate made of tinplate (thickness 0.22mm), and set 3 sections×3 rows (9 pieces in total) of water passage holes of φ7mm.

<inner container>

・Aluminum Cup 1 (Al Cup 1): No.6, Aluminum, Thickness: 0.01mm, Size: Top φ60mm, Bottom φ40mm, Height 33mm

・Aluminum Cup 2 (Al Cup 2): No.4, Aluminum, Thickness: 0.01mm, Size: Top φ60mm, Bottom φ53mm, Height 15mm

・TFS Cup (TFS Cup): Made of Wuxi Iron Plate (Tin Free Steel) (general steel plate for canned beverages), thickness: 0.25mm, size: φ40mm, height 50mm

(Experimental example 1)

[Modulation of fumigant]

According to the composition of the fumigant mixture shown in Table 1, components other than water were put into a stone crusher (Ishikawa-type stirring stone crusher) and mixed. After mixing, water is added and mixed again to obtain a fumigant mixture. The obtained fumigant mixture was granulated using a front extrusion granulator (EXK-1, manufactured by Fuji Paudal Co., Ltd.) having a die with a diameter of 2 mm openings to obtain a granulated product. The obtained granules were cut into lengths of 2 to 5 mm, and dried to 109.5 parts by mass to 100 parts by mass by a dryer (RT-120HL, manufactured by ALPU Co., Ltd.) set at 70° C. to obtain a granular fumigant .

[Production of fumigation device]

According to the specifications in Table 1, the same smoking device as the smoking device 8 in FIG. 1 was fabricated. Let the material of pattern 1 be a cylinder with a diameter of 65 mm and a height of 50 mm, make a side wall portion with an aluminum foil on the inner peripheral surface, and install a bottom on the bottom surface of the side wall portion to form a bottomed cylindrical outer container. Fill the inner container with 37 g of heating agent. The inner container (Al cup 1) was set in the above-mentioned outer container so that the opening thereof was on the bottom side, and the heating agent was accommodated in the inner container. Next, 10 g of the fumigant obtained in the above "preparation of fumigant" was filled in the outer container. After the fumigant is filled, the cover is attached to the top surface of the side wall to manufacture a smoking device. The smoking device of making, because the interval (hereinafter referred to as inner and outer container spacing) of the inner peripheral surface of inner container and the inner peripheral surface of outer container is 5mm at the top surface periphery of inner container, therefore in table 1 " distance between inner and outer container "Yes" column is recorded as "Yes". Smoke was carried out with the manufactured fumigation device, and the volatilization rate and the temperature of the outer peripheral surface of the outer container were measured. The results are shown in Table 1.

(Example 2)

Except that the inner container is a TFS cup, the same smoking device as the smoking device 100 in FIG. 2 was produced in the same manner as in Example 1. The fumigation was performed with the manufactured fumigation device, and the volatilization rate and the temperature of the outer peripheral surface of the outer container were measured. The results are shown in Table 1.

(Example 3)

A smoking device was fabricated in the same manner as in Example 1, except that the side wall portion was pattern 2. The fumigation was performed with the manufactured fumigation device, and the volatilization rate and the temperature of the outer peripheral surface of the outer container were measured. The results are shown in Table 1.

(Example 4)

A smoking device was manufactured in the same manner as in Example 1, except that the side wall was pattern 3. The fumigation was performed with the manufactured fumigation device, and the volatilization rate and the temperature of the outer peripheral surface of the outer container were measured. The results are shown in Table 1.

(comparative example 1)

[Modulation of fumigant]

According to the composition shown in Table 1, a fumigant was obtained in the same manner as in Example 1.

[Production of fumigation device]

Based on the specifications in Table 1, a smoking device similar to the smoking device 900 shown in FIG. 3 was produced.

The smoking device 900 shown in FIG. 3 has an outer container 910 and an inner container 920 .

The outer container 910 is roughly composed of a substantially cylindrical side wall 912 , a cover 14 provided on the top side of the side wall 912 , and a bottom 916 provided on the bottom side of the side wall 912 .

The outer container 910 is provided with a frustum-like inner container 920 whose diameter gradually increases from the cover 14 to the bottom 916 of the outer container 910 . The opening of the inner container 920 is on the bottom 916 side of the outer container 910 , and the periphery of the opening is in contact with the inner peripheral surface 910 b of the outer container 910 between the lid 14 of the side wall 912 and the bottom 916 .

In the outer container 910 , one side of the bottom 916 is filled with the heating agent 22 , and at the same time, through the inner container 920 , the fumigant 30 is filled to cover the heating agent 22 .

In this smoking device 900 , the heating agent 22 is in contact with the inner peripheral surface 910 b of the outer container 910 on the bottom surface side of the outer container 910 .

In addition, as the bottom 916, a non-woven fabric, a paper-made or metal sheet-shaped base material is mentioned in which a water-through hole is penetrated.

A cylinder having a diameter of 65 mm and a height of 50 mm was produced from the material of Spec. 4 as a side wall portion. A bottom was attached to the side wall to form a bottomed cylindrical outer container, and 37 g of heating agent was filled in the outer container. On the filled heating agent, the inner container (Al cup 2) was set in the above-mentioned outer container with its opening on the bottom side. Next, 10 g of the fumigant obtained in the above "preparation of the fumigant" was filled in the outer container so as to cover the inner container. After the fumigant is filled into the outer container, a cover is attached to the outer container to manufacture a smoking device. Smoke was carried out with the manufactured fumigation device, and the volatilization rate and the temperature of the outer peripheral surface of the outer container were measured. The results are shown in Table 1.

In addition, in Comparative Example 1, since the heating agent was in contact with the inner peripheral surface of the outer container, "None" was entered in the column of "the presence or absence of a space between the inner and outer containers" in Table 1.

(comparative example 2)

A smoking device was fabricated in the same manner as in Example 1 except that the side wall was made of the material of Pattern 4. The fumigation was performed with the manufactured fumigation device, and the volatilization rate and the temperature of the outer peripheral surface of the outer container were measured. The results are shown in Table 1.

(comparative example 3)

A smoking device was fabricated in the same manner as in Comparative Example 1 except that the side wall portion was made of the material of Pattern 1. The fumigation was performed with the manufactured fumigation device, and the volatilization rate and the temperature of the outer peripheral surface of the outer container were measured. The results are shown in Table 1.

(comparative example 4)

A smoking device was manufactured in the same manner as in Example 1 except that the side wall was made of the material of Pattern 5. The fumigation was performed with the manufactured fumigation device, and the volatilization rate and the temperature of the outer peripheral surface of the outer container were measured. The results are shown in Table 1.

(Evaluation method)

[Volatilization rate]

23 mL of water was added to a plastic cup (for 25 g of water-induced VARSAN (trade name)), and the plastic cup was placed in the center of a test room with an internal volume of 6.38 m ³ (6380 L). The smoking device of each example was left still in the above-mentioned plastic cup, and smoking was started. Five minutes after the start of fumigation, the air in the test chamber was stirred with a fan. After stirring, use a vacuum pump to flow 20L of air in the test chamber into the recovery column, so that it can absorb the medicament volatilized in the test chamber. As the recovery column, silica gel for chromatography (Wakogel C-100, manufactured by Wako Pure Chemical Industries, Ltd.) was used.

Next, after the chemical is adsorbed, the acetone is allowed to flow into the recovery column to recover the circulating acetone. In this way, the chemical adsorbed on the silica gel for chromatography is eluted. Using recovered acetone as a sample, the amount of drug (A) in acetone was quantified by gas chromatography. On the other hand, the amount of drug (B) in the fumigant was quantified by gas chromatography. From these quantitative results, the volatilization rate was calculated by the following formula (2).

Evaporation rate (mass%)=(A/20L)×(1/B)×6380L×100%…(2)

[Outer peripheral surface temperature of outer container]

23 mL of water was added to a shallow dish (φ90 mm), and the above-mentioned shallow dish was placed in the center of a test room of 3.42 m in length x 3.82 m in width x 2.40 m in height. Use a heat-resistant tape to attach a temperature sensor (ST-23E-015-TS1-ANP, manufactured by Anritsu Keiki Co., Ltd., hereinafter simply referred to as a temperature sensor) for a thermoelectric counter static surface to the outer peripheral surface of the outer container of the smoking device of each example. . The temperature sensor was attached to three places of the outer peripheral surface of the outer container, 10 mm below the top surface, the central part, and 10 mm above the bottom surface. Place the fumigator with the temperature sensor attached in the above shallow pan and start smoking. The measurement of the temperature of the outer peripheral surface of the outer container in the smoke is to measure the elapsed temperature every 1 second with a temperature sensor. The measurement data were acquired with a data logger (COMPACT THERMO LOGGER AM-8000E, manufactured by Anritsu Keiki Co., Ltd.). After the smoke is finished, extract the highest attained temperature from the measurement temperature recorded by the data logger, and the result is recorded in Table 1 as the temperature of the outer peripheral surface.

As shown in Table 1, the chemical volatilization rate of Examples 1 to 4 in which aluminum foil (infrared reflective material) is provided on the inner peripheral surface of the outer container and the inner and outer containers are provided with a gap is all above 65% by mass, and the temperature of the outer peripheral surface is 103 to 121 ℃.

On the other hand, in Comparative Example 1 in which no gap was provided between the inner and outer containers and no aluminum foil was provided on the inner peripheral surface of the outer container, the chemical volatilization rate was as low as 45% by mass and the outer peripheral surface temperature reached 323°C. In addition, in Comparative Example 2 in which the inner and outer containers were provided with a spacer and the inner peripheral surface of the outer container was not provided with aluminum foil, although the temperature of the outer peripheral surface was as low as 124° C., the chemical volatilization rate was as low as 42% by mass. In addition, in Comparative Example 3 in which no gap was provided between the inner and outer containers and the inner peripheral surface of the outer container was provided with aluminum foil, the temperature of the outer peripheral surface reached 287° C. although the chemical volatilization rate was as high as 66% by mass. In Comparative Example 4 in which the side wall is a single layer of TFS, the chemical volatilization rate was as low as 38% by mass, and the temperature of the outer peripheral surface reached 194°C.

From the above results, it can be known that the fumigation device of the present invention, in which the inner and outer containers are spaced and the inner peripheral surface of the outer container is covered with an infrared reflective material, can fully disperse the medicine, suppress the temperature rise of the outer peripheral surface of the container, and is easy to operate.

Industrial availability

The fumigating device of the present invention can fully volatilize the medicament, and can control the temperature rise of the outer peripheral surface of the container, and is easy to operate.

Claims (9)

1. The smoke device is characterized by: It has a bottomed cylindrical outer container filled with fumigant, and an inner container provided inside the outer container and filled with a heating agent that generates heat through hydration reaction, There is a space between the outer peripheral surface of the inner container and the inner peripheral surface of the outer container, The base material of the above-mentioned outer container has heat insulation, and its inner peripheral surface is covered with an infrared reflective material. 2. The smoking device according to claim 1, characterized in that the fumigant is filled between the inner peripheral surface of the outer container and the outer peripheral surface of the inner container. 3. The smoking device according to claim 1, wherein the paper base material of the outer container is covered with an infrared reflective material. 4. The smoking device according to claim 2, wherein the paper base material of the outer container is covered with an infrared reflective material. 5. The smoking device according to claim 1, characterized in that, the infrared reflective material is aluminum. 6. The smoking device according to claim 2, characterized in that, the infrared reflective material is aluminum. 7. The smoking device according to claim 3, characterized in that, the infrared reflective material is aluminum. 8. The smoking device according to claim 4, characterized in that, the infrared reflective material is aluminum. 9. The smoking device according to any one of claims 1-8, characterized in that, the bottom surface of the outer container is formed with a water hole for allowing water to flow into the inner container.