JPH0441977B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an apparatus for evaporating chemicals such as insecticides, disinfectants, indoor air fresheners, and deodorizers by heating, and more specifically, a device for evaporating chemicals such as insecticides, disinfectants, indoor air fresheners, and deodorizers by heating, and more specifically, for catalyzing a volatile fuel such as alcohol and a catalyst in the air as a heating source. This invention relates to a drug heating evaporation device that utilizes the heat of reaction that occurs. 2. Description of the Related Art Conventionally, devices such as electric mosquito traps have been known, which heat a pine impregnated with a chemical such as an insecticide to evaporate the chemical in the pine. however,
These devices use electricity as a heat source for the heat sink that heats the pine, making the structure of the device complicated.Additionally, when electricity is used, a power cord is required, which limits the places where they can be used. was. Mosquito coils, for example, have also been used to repel and kill insects during outdoor leisure activities, but they involve the problem of not being necessarily safe as they use continuous flame. Furthermore, although there is a conventional platinum warmer type liquefied gas fumigator, this fumigator uses platinum cotton, which is asbestos impregnated with platinum and palladium, and a palladium cotton catalyst, and uses a so-called platinum warmer that uses a vaporized fuel such as benzine. A heating pad was directly applied to the evaporation of insecticides, and although it was sufficient for the purpose of heat retention, it was unsuitable for use as an insecticide evaporation device that required precise temperature control. In other words, with this known method, a uniform catalyst cannot be obtained using platinum cotton, and a uniform mixture of fuel and oxygen cannot be obtained due to the uneven supply of oxygen, so a constant temperature cannot be maintained. It was hot. The present inventors first solved the above-mentioned drawbacks of these conventional heating evaporation devices and eliminated the danger of using fire by using a volatile fuel such as alcohol and platinum or palladium as a heating source. We have developed a catalyst-heating type chemical heating evaporation device that utilizes the reaction heat generated when the chemical is brought into contact with a catalyst in the air.It has a simple structure and does not require a power cord, so it can be used anywhere. That is, this device includes a fuel storage section for alcoholic vaporized fuel, etc. in the device case, a metal catalyst disposed with a certain space above the storage section, and a certain space above the metal catalyst. The device is characterized in that it accommodates a heat radiation device for heating and evaporating the chemical, and is also provided with a vent for supplying air and/or discharging combustion gas,
A mechanism is provided in which a certain space is provided between the fuel container and the metal catalyst section to ensure sufficient mixing of the fuel gas and oxygen, and a certain space is provided between the metal catalyst section and the heat sink for heating and evaporating the chemical agent. By efficiently promoting thermal convection of the fuel gas, it was possible to maintain a uniform effective temperature, which had previously been considered difficult. In addition, there are two types of metal catalysts used in catalyst heating type evaporation devices: one for high temperatures and one for bottom temperature. In the conventional platinum warmer type, high temperature catalysts were used exclusively and always required preheating with a high amount of heat. In the present invention, the use of alcohol volatile fuel makes it possible to use a low temperature catalyst. However, this device is based on the premise that the exothermic reaction is started at room temperature, and has the disadvantage that it often causes heat generation failure due to deactivation of the metal catalyst. The inventors of the present invention have conducted intensive research to overcome this drawback, and have found that even if the low-temperature metal catalyst used in the present invention is inactivated, it can be recovered by preheating with a low amount of heat under certain conditions. I found it.
Then, a heat generating member such as a filament heater or a ceramic heater is arranged near the metal catalyst,
The present invention was completed by developing a heating evaporation device that can generate normal heat just by energizing the battery for a few seconds at the beginning of using the device of the present invention. The idea of using a filament energized in a battery for preheating is known, for example, in Japanese Utility Model Publication No. 49-31669, but in this case, liquefied gas such as butane gas is once ignited, and the combustion heat is used to activate the platinum cotton catalyst. It was used for many purposes, and required a considerable amount of heat to ignite. However, in the device of the present invention, surprisingly, by covering the volatile fuel gas metal catalyst in advance and setting the heat-generating member at a distance of 5 mm or less from the catalyst surface, activation of the catalyst cotton can be promoted with a relatively low amount of heat. However, it has become clear that the catalyst activation mechanism is completely different from the former. Examples of the heat generating member used in the present invention include platinum filament heaters and ceramic heaters, but since the purpose can be achieved with a low resistance value, it can be loaded into the heating evaporation device without incurring cost risks. be able to. The bottom of the case body, which serves as the fuel storage section, can be configured to fit a filling container, an enclosure container, or the like into which solid fuel, liquid fuel, or gelled fuel can be placed or stored. Furthermore, the fuel storage section may be configured as a filling container or a sealed container capable of placing or storing alcoholic volatile solid fuel, volatile liquid fuel, or volatile gelled fuel. A feature of the present invention is that an alcoholic volatile fuel storage section and , comprising a metal catalyst disposed with a certain space above the fuel storage part and a heat generating member such as a filament heater or a ceramic heater for preheating the metal catalyst, and the metal catalyst is arranged in a certain space above the fuel storage part. , installed in a metal member having ventilation holes in the side cotton part above the partition plate, with a tube vapor penetrating through an insulating partition plate that partitions the space inside the mounting case above the metal catalyst; A heat sink for chemical heating and evaporation connected to a metal member is housed in the heat sink mounting case and placed above the metal catalyst at a constant interval, and electrical power is relayed between the heat generating member and the battery. It is in. Hereinafter, the present invention will be explained in more detail based on the drawings. The illustrated device case has a rectangular case body 1 with a bottom.
and a mounting case 2 for placing a heat dissipation plate for heating and evaporating the drug on the case body. Case body 1
The bottom of the fuel storage case 1a is formed to fit therein. Furthermore, the inside of the fuel storage case is defined by a cylindrical inner wall 1b formed on the inside into a fuel storage section 1c and a water puddle section 1d, and 1e has four parts for fitting.
This is a step formed at the corner. The mounting case 2 for heating transpiration includes a circular point plate 2
1. Consists of a cylindrical top wall 27 and a main body fitting part 28,
The space 29 inside the case is connected to the space outside the case through a gap formed around the lower side wall 27a. A rectangular opening 22 is arranged approximately in the center of the top plate 21, and the shape of the opening end 22a on the front side is as follows.
It has a rectangular shape that is similar to the insecticidal mat 3 that is set in the chemical heating device and is slightly larger than the insecticidal mat 3. Immediately below the heat dissipation plate 4 on which the insecticidal mat 3 is placed, an insulating rubber packing 23 is placed along the inner periphery of the opening to weaken heat conduction to the case, and the components of the insecticidal mat can be transferred from the gap in the opening 22 to the catalyst 5 ( (described later). 24, 24 are recessed portions that are provided adjacent to a pair of long sides of the opening 22 on the surface of the top plate 21 and slope smoothly from the peripheral end toward the center. The recesses 24, 24 connect the insecticide pine 3 to the opening 22.
The insecticidal mat is formed to facilitate the operation of attaching and detaching the insecticidal mat when it is inserted into the heat sink and placed on the heat sink 4 or taken out. Further, a portion 21a of the top plate disposed below the opening supports a heat dissipation member configured by being connected to the heat dissipation plate 4 and a catalyst holding section to be described later. Reference numeral 7 denotes a heat-insulating partition plate that partitions the inside of the device case into a space above the fuel storage section and a space inside the mounting case above the metal catalyst. This partition plate 7 has a circular shape with a diameter that allows it to be placed on the upper surface 1f of the case body 1, and a metal plate 8 with an appropriate hollow part is placed on the periphery of the partition plate 7, and the metal plate 8 is placed on the periphery of the mounting case 2. It is fixed to the upper surface 1f with screws 26, 26 together. Further, the material of the partition plate 7 is not particularly limited, but it is preferably made of non-breathable or slightly breathable material, such as glass fiber. The insecticidal mat 3 is made of a rectangular fiberboard impregnated with an insecticidal active ingredient chemical solution, but is not particularly limited to this as long as it has a shape that can be inserted into the opening 22 of the case 2. The heat dissipation plate 4 is for heating and evaporating the insecticidal chemical component, and is composed of a heat dissipation member connected to the catalyst holding part.
As shown in the figure. This heat dissipation member is composed of a horizontal top plate (heat dissipation plate) 41 on which the insecticidal mat 3 is placed and heated, and a cylindrical metal member 42 extending downward from the top plate and having a metal catalyst holding portion 43 at the lower part. Ru. The metal member 42 is threaded and fixed to the heat sink mounting case via a washer and a nut 44, and the catalyst holding portion 43 has a catalyst 5 which will be described later.
It is fitted with a ring 45 to prevent it from falling. A ventilation hole 46 is provided in the side surface of the metal member.
46 is provided so that combustion gas mainly from the catalyst 5 can be discharged to the outside. If the top plate 41 is also made porous and a part of the combustion gas generated from the catalyst 5 is allowed to escape through the holes in the top plate 41, the oxidation reaction of the fuel in the catalyst 5 is promoted.
Moreover, the heat convection of the combustion gas is not inhibited, which is preferable, but it is not necessarily necessary to use a perforated plate. A space C having a constant height is formed between the upper surface plate 41 and the upper surface of the catalyst 5, so that the catalyst 5 and the upper surface plate 41 do not come into direct contact with each other. The distance of space C, that is, the distance between the catalyst and the upper surface part (drug heating part) is
It is good to set it to at least 0.2 cm or more, preferably 0.3 to 3.0 cm. The catalyst and the upper surface are in contact (C=
0 cm), or if they are far apart but too close (C<0.2 cm), thermal convection and oxidation reaction of the combustion gas between them will be hindered, resulting in insufficient heating of the upper surface. By separating the catalyst and the upper surface by at least 0.2 cm, the upper surface can be heated to a high temperature most efficiently by thermal convection of the combustion gas exiting the catalyst. The catalyst 5 has a prismatic or cylindrical shape that can be accommodated in the catalyst holding portion 43 of the heat dissipation plate 4, and is made of a honeycomb structured ceramic carrier supporting platinum or palladium or the like as a catalytically active metal. The catalyst 5 used in the present invention is of course not limited to this, and may be bead-shaped or wool-shaped, for example. Further, 1g is a cylindrical inner wall provided around the metal catalyst, which is effective for efficiently passing a mixed gas of fuel and air over the catalyst. 1h is a vent from which the air necessary for the catalytic oxidation reaction of the fuel is supplied. Although the purpose can be achieved by placing the vent hole either on the side surface or the top surface of the case body, it is preferable to install it as low as possible or at the bottom of the fuel storage case. 2 and 3 show the loading state of the preheating heater. The heater 9 held by the heater holding member 10 is installed within 5 mm from the lower surface of the metal catalyst, and the push button switch 13 and battery box Power is relayed to the dry battery 11 in 12. Reference numeral 15 denotes a fuel filling container placed in the fuel storage part 1b, which has an open top surface, is filled with volatile fuel, and is stored in the fuel storage part 1b of the fuel storage case 1a. A space D having a certain height is secured between the fuel filling container 15 and the catalyst 5. The fuel used in the chemical heating evaporation device of the present invention is one that is volatile and causes an exothermic reaction with the catalyst, specifically alcohols, preferably methanol or ethanol. The alcohol can be in liquid form, or in gel form made from carboxyvinyl polymers, copolymers of maleic anhydride and isobutylene, copolymers of vinyl alcohol and acrylic acid, starch derivatives, etc. Any solid fuel as a main component can be used. Also, when using gel fuel or solid fuel,
Spray the fuel with coarse cloth such as case, non-woven cloth, foamed cloth, etc.
Covering the container with a porous material such as ceramics or plastic that does not hinder the evaporation of the fuel is useful for preventing the fuel from flowing out of the container or for adjusting the amount of vaporized fuel gas. In the chemical heating evaporation device configured as described above, the insecticidal mat 3 is put into the opening 22 of the case 2 and placed on the top plate 41 of the heat sink 4. After loading the fuel, press the push button switch for a few seconds to preheat the catalyst. After the alcohol fuel volatilized from the fuel filling container 15 fills the space D, the alcohol fuel evaporates from the fuel filling container 15.
It passes through the catalyst 5 disposed above the catalyst 5. catalyst 5
After the fuel alcohol is oxidized by reacting with platinum or palladium, it is discharged from the catalyst 5 as a combustion gas. After this fuel gas further rises and fills the space C, it passes through ventilation holes 46, 46, . . . formed in the side surface of the metal member 42, and is exhausted to the outside. The reaction heat generated by the oxidation of the alcohol fuel in the catalyst 5 is convectively transferred to the top plate 41 of the heat sink 4 located above the catalyst 5, raising the temperature of the top plate 41. In addition, the reaction heat in the catalyst 5 is conducted to the top plate 41 through the metal members 43 and 42.
temperature rises uniformly. Top plate 4 with increased temperature
The insecticidal mat 3 placed on the insecticidal mat 3 is thereby uniformly heated, and the insecticidal active ingredient in the insecticidal mat 3 evaporates outward from the opening 22 of the case lid 2. During this time, the air necessary for the alcohol fuel oxidation reaction in the catalyst 5 is supplied to the vent 1h of the case body 1.
and is supplied to the catalyst 5. Moisture generated by the oxidation reaction of the fuel is stored in a puddle portion 1d of the case body 1. Insecticides that can be used in the device of the present invention include:
All insecticides that have been conventionally used as insecticides for electric mosquito traps can be used, specifically the following: As an insecticidal ingredient, 3-allyl-2-
Methylcyclopent-2-en-4-one-1-
yl dl-cis/trans-chrysanthemate (anthurin), 3-allyl-2-methylcyclopent-2-en-4-one-1-yl d-cis/
trans-chrysanthemate, d-3-allyl-
2-Methylcyclopent-2-en-4-one-
1-yl d-trans-chrysanthemate, 5
-propargyl-2-furylmethyl d-cis/
trans-chrysanthemate, 1-ethynyl-2
-Methylpent-2-en-1-yl d-cis/trans-chrysanthemate, 1-ethynyl-2-methylpent-2-en-1-yl 2,
Pyrethroid insecticides such as 2,3,3-tetramethylcyclopropanecarboxylate can be used, as well as piperonyl butoxide, N-(2-
ethylhexyl)-1-isopropyl-4-methylbicyclo[2,2,2]-oct-5-ene-
Pyrethroid synergists such as 2,3-dicarboximide and octachlorodipropyl ether can be blended. These insecticidal ingredients are used by soaking them in a mat made of fiberboard, but in addition to the above ingredients, BHT, BHA,
It can also be prepared by blending antioxidants such as DBH, dyes whose color fades with use to tell whether or not they have been used, and even fragrances. In addition to the drug-impregnated mat, the device of the present invention can also be used, for example, in an aluminum container filled with a heat-evaporable solid drug. In addition to insecticides, disinfectants, indoor air fresheners, deodorizers, etc. can also be used in the same manner. As examples of disinfectants that can be used, any disinfectant that has volatile properties such as alcohols or dioxins can be used. The heating evaporation device of the present invention is not limited to the structure shown in FIGS. 1 to 4. At the open end 22a on the front side, the heat sink 4 is in close contact with the case via the heat insulating rubber packing 23, but a ventilation gap is provided that communicates from the open end 22a to the case internal space 29 to prevent volatilization of chemicals or combustion gas. It is also possible to have a structure that promotes heat convection more efficiently. Although the shape of the heat sink is not limited to that shown in the figure,
However, it is necessary to secure a certain space C between the heat sink and the catalyst. The distance of space C, that is, the distance between the catalyst and the heat sink, is at least 0.2 cm or more,
Preferably it is 0.3 to 3.0 cm. If the catalyst and the heat sink are in contact (C = 0 cm) or are separated but are too close together (C < 0.2 cm), the thermal convection and oxidation reaction of the combustion gas between them will be impeded and the heat sink will be damaged. Heating becomes insufficient. By separating the catalyst and the heat sink by at least 0.2 cm, the heat sink can be heated to a high temperature most efficiently by thermal convection of the combustion gases coming out of the catalyst. The fuel filling container may be of any type as long as it has an open top and allows the fuel to evaporate efficiently from the filled container. The distance of the space D between the fuel and the catalyst, that is, the distance d, is preferably 0.3 cm or more, preferably 0.5 to 10.0 cm. The fuel and catalyst are in contact (d=
If the diameter is less than 0 cm) or 0.3 cm, the volatilized fuel will not flow into the catalyst efficiently, resulting in fuel loss, which is undesirable. By separating both members by 0.3 cm or more, volatile fuel can smoothly pass through the catalyst and cause an oxidation reaction. In addition, although the battery box is loaded outside the case in FIGS. 1 to 4, it is of course possible to install it inside the case. Next, the apparatus of the present invention will be explained using examples. Example 1 5-propargyl-2-furylmethyl d-cis/trans-chrysanthemate 5 g, N-(2
-ethylhexyl)-1-isopropyl-4-methylpicyclo[2,2,2]oct-5-ene-
15 g of 2,3-dicarboximide, 1.5 g of DBH and 1,4-diisopropylaminoanthraquinone
0.2 g was dissolved in acetone to make 100 ml, and 1 ml of this solution was impregnated into a 35 x 22 x 28 mm fiberboard and air-dried to remove the acetone to obtain insecticidal pine. This is used by placing it on the heat sink of the heating evaporation device shown in FIGS. 1 and 2. Example 2 3-allyl-2-methylcyclopent-2-en-4-one-1-yl d-cis/trans-
Add acetone to 6 g of chrysanthemate, 4 g of piperonyl butoxide, 2 g of BHT, and 0.3 g of 1,4-dimethylaminoanthraquinone and dissolve in 100 ml.
shall be. The same fiberboard as in Example 1 was impregnated with 1 ml of this solution to obtain insecticidal pine. This is used by placing it on the heat sink of the heating evaporation device shown in FIGS. 1 and 2. Example 3 1-ethynyl-2-methylpent-2-ene-
1-yl d-cis/tras-chrysanthemate
10 g, N-(2-ethylhexyl)-1-isopropyl-4-methylpicyclo[2,2,2]oct-5-ene-2,3-dicarboximide 8 g,
1 g of DBH, 0.8 g of perfume, 0.2 g of 1,4-diisopropylaminoanthraquinone, and 10 g of odorless kerosene were mixed, heated and dissolved, and 0.3 g of the solution was impregnated into the same fiberboard as in Example 1 to obtain insecticidal pine. This mat was placed on the heat sink of the heating evaporation device shown in Figures 1 and 2, and a test using Culex pipiens showed that it was as effective as a commercially available mosquito coil for up to 10 hours. Example 4 2 ml of an ethanol solution of 1 g of dioxin was mixed with 30×
A 20 x 3 mm ceramic plate was impregnated, and this was
It is placed on the heat radiating plate of the heating evaporation device shown in the figure and FIG. 2, and used for indoor sterilization. A comparison of the number of sterilizations in the room before and after use was carried out using the Shearle method using an agar medium, and the number of sterilizations after use was less than 1% compared to before use. Example 5 Carboxyvinyl polymer (trade name Hipis Wako 104) was added to 47 g of ethanol solution containing 5 g of fragrance.
After adding and dissolving 1 g, 2 g of a 2% aqueous triethanolamine solution was added to prepare a gel. this gel
20g was placed in an aluminum container, placed on the heat sink of the heating transpiration device shown in Figs. 1 and 2, and used as an indoor aromatic deodorizer. Example 6 The fiberboard of Example 1 was impregnated with 1 ml of an alcoholic solution containing 0.5 g of an alcoholic extract of the deodorizing ingredient in fresh leaves of Camelliaaceae plants (trade name: Deodora S),
This was placed on the heat sink of the heating evaporation device shown in FIGS. 1 and 2, and a deodorization test was conducted in a toilet. As a result, it was possible to completely eliminate the bad odor. Next, the present invention will be explained using test examples. Test Example 1 The insecticidal pine obtained in Examples 1 and 2 was placed on the heat sink shown in Figures 1 and 2, and a fuel container was filled with 90 parts of methanol, 8 parts of ethanol, and D-sorbitol. 25 g of a gel prepared from 2 parts of a benzylidene derivative (trade name: GELOL D) was added, and a test was conducted on Culex mosquitoes over time.
The results are shown in Figure 5. The “relative efficacy” in the diagram is 1
The efficacy over time was set as 1.0, and the efficacy at each time was thereafter tested in relative ratio. As is clear from FIG. 5, both the insecticidal pine of Example 1 and the insecticidal pine exhibit good effects. Test Example 2 In the heating evaporation device shown in FIGS. 1 and 2, the distance (cm) between the catalyst 5 and the heat sink 4 and the distance between the catalyst 5 and the fuel filling container 15 filled with fuel up to the upper end of the opening are determined. By changing the distance (dcm) between
The temperature of the heat sink 4 was measured, including the presence or absence of vents. The results are shown in Table 1. In this test example, solid fuel was prepared by heating and dissolving 6 parts of stearic acid in 86 parts of methanol and adding 8 parts of 12.5% sodium hydroxide solution (water: methanol = 1:8). The room temperature of the measurement chamber is 25
The test was carried out at ±1°C.

【table】

[Table] Average value of temperature at each time The following is clear from the results in Table 1 above. Comparing No. 1 and No. 2 to 10, it is necessary to provide a distance between the fuel filling container (fuel) 15 and the catalyst 5, and the temperature of the heat sink 4 can be controlled by this distance. . In addition, the catalyst 5 and the heat sink 4
The distance between No. 5 and No. 11 is also considered to be necessary from the comparison between No. 5 and No. 11.
No. 11 to No. 17 affect only the temperature of the heat sink 4.
Therefore, by appropriately combining the distances ccm and dcm, the temperature of the heat sink 4 can be selected depending on the type of medicine and purpose. Next, connect the ventilation hole with No.4.
The result of No. 18 shows that it is essential. According to a separate test conducted on the size, number, etc. of vents, the temperature of the heat sink does not rise at all if there are vents, and if the size of the vents is constant, , a constant temperature was obtained on the heat sink. Further, although the vent hole is preferably located below the side surface of the case body or at the bottom of the fuel storage case, similar results were obtained even when the vent hole is provided above the side surface of the case body. The size of the opening on the top surface of the fuel filling container varies depending on the type of fuel used and the distance between the fuel filling container and the catalyst, but under constant conditions, a stable temperature was obtained on the heat sink. From the above test examples, in order to efficiently heat the heat sink using a constant heat source in the heating transpiration device of the present invention, it is necessary to maintain a certain space between the fuel filling container and the catalyst and between the catalyst and the heat sink. It is clear that it is necessary to provide a vent hole and to secure a vent hole, and other than this, other changes can be made as appropriate depending on the intended use of the drug, type of fuel, etc. Test Example 3 The temperature of various volatile fuels was measured using the heating evaporation device of the present invention shown in FIGS. 1 and 2. The temperature of the measurement room was 25℃±1℃.

[Table] Average value of temperature over time According to Test Example 3 above, the volatile fuel used in the heating evaporation device of the present invention can achieve the desired temperature as long as it is an alcoholic fuel that is volatile at room temperature. No difference was observed. Test Example 4 The following tests were conducted on the heating evaporation apparatus of the present invention shown in FIGS. 1 and 2 using a 1.3Ω platinum filament and 2 x 1.5V dry batteries as a preheating heater. That is, when a heater was loaded into a device that would not generate heat properly without preheating, the type of fuel and the distance between the metal catalyst and the filament heater were changed and the temperature was measured after a certain amount of time had elapsed, and the following results were obtained. The temperature of the measurement chamber was 25°C±1°C, and electricity was applied for 5 seconds.

【table】

[Table] Average value of temperature over time From the above tests, it was found that the heating evaporation device of the present invention is effective for volatile alcohol fuels, but cannot be applied to liquefied gas used as fuel for platinum cotton type devices. Ta. This indicates that the catalyst activation mechanism is different for both gases. Furthermore, the distance between the catalyst and the filament must be 5 mm or less; if it is too large, the recovery of heat generation will be delayed.

[Brief explanation of the drawing]

The drawings show an embodiment of the drug heating evaporation device according to the present invention, in which Fig. 1 is a plan view, Fig. 2 is a vertical side view, Fig. 3 is a cross-sectional view taken along the line of Fig. 2, and Fig. 4 is a heat dissipation diagram. FIG. 5, an exploded perspective view of the components, is a diagram illustrating relative potency versus time in the present invention. 1... Case body, 2... Heat sink mounting case,
3... Insecticidal pine, 4... Heat sink, 5... Catalyst,
7... Partition plate, 9... Heater, 10... Heater holding member, 11... Dry battery, 12... Battery box, 13... Push button switch.

Claims (1)

[Claims] 1. In a device case consisting of a bottomed case body equipped with an air supply vent and a heat dissipation plate mounting case on the case body, there is a storage section for alcoholic volatile fuel and an area above the fuel storage section. The metal catalyst is provided with a metal catalyst placed in a certain space and a heat generating member such as a filament heater or a ceramic heater for preheating the metal catalyst, and the metal catalyst is placed in a space above the fuel storage part and placed above the metal catalyst. The drug is housed in a cylindrical metal member that penetrates an insulating partition plate that partitions the space inside the case and has ventilation holes in the side surface above the partition plate, and is connected to the metal member. A drug heating and evaporating device characterized in that a heat dissipating plate for heating and evaporation is housed in the heat dissipating plate mounting case and arranged above the metal catalyst at a constant interval, and the heat generating member is electrically relayed to a battery.