JPS6358531B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pest exterminator characterized in that the purpose of exterminating pests is achieved by gasifying a solid insecticide using ceramic supporting an oxidation catalyst as a heat source.

Vape (trade name), which has traditionally been known as this type of pest exterminator, uses a household power source as a heat source to gasify solid insecticides, and lacks mobility. In addition, it is known that ceramics supporting an oxidation catalyst which generates heat through an oxidation reaction with an organic volatile agent are used as a heat source, but it cannot be said that sufficient contact with the organic volatile agent is achieved and the heat generation efficiency is poor. There are problems such as insufficient heat and slow reaction speed.

Therefore, in the commercialization of pest exterminators that use this type of catalyst, how to efficiently generate heat at a high temperature and quickly in a small oxidation catalyst-supported ceramic in an atmosphere of a limited organic volatile agent has become an issue in commercialization. There is.

The present invention uses an oxidation catalyst-supported ceramic having a porous structure having a large number of vertically elongated and mutually parallel ventilation holes when configuring a pest exterminator using the above-mentioned oxidation catalyst-supported ceramic as a heat source, The surface is captured with a metal holder and suspended in the envelope so that one opening surface of the ventilation hole is at the bottom and the other opening surface is at the top,
In addition, the wick for the liquid organic volatile agent is extended vertically toward the center of the lower opening surface of the oxidation catalyst-supporting ceramic, and the end surface of the wick is placed facing the lower opening surface. The volatile gas from the end face is made to flow through the vent hole intensively as an upward current, and the circumferential surface of the oxidation catalyst-supporting ceramic is captured and suspended by a metal holder to form a suction wick. By making them face each other, it is possible to effectively eliminate the occurrence of heating dead points (non-heat generating parts) that occur when oxidation catalyst-supported ceramic is placed on a pedestal, etc., and improve heat generation efficiency, which is the key to commercialization. This solves the problem of insufficient heat. In addition, the metal holder captures the circumferential surface of the oxidation catalyst-supporting ceramic to receive heat transfer more efficiently from the circumferential surface, and the metal holder holds a solid insecticide to transfer the conducted heat to the solid. It is designed to be efficiently absorbed by insecticides.

The present invention will be explained below based on illustrated embodiments.

In the figure, 1 is a ceramic with a porous structure supporting an oxidation catalyst (a typical example is an oxidation reaction using a metal catalyst such as a platinum catalyst);
As shown in FIG. 2, the vent holes are vertically long and parallel to each other.

2 is a liquid organic volatile agent such as alcohol that causes the oxidation catalyst-supported ceramic 1 to generate heat, and 3 is a solid insecticide that is gasified by the heat generated by the oxidation catalyst-supported ceramic.

As the organic volatile agent 2, in addition to methyl alcohol, methanol, thinner, etc. can be used.

The organic volatile agent 2 is placed in a container 4, and the three components are the organic volatile agent-containing container 4, the oxidation catalyst-supported ceramic 1, and the heat-reactive solid insecticide (a drug that causes negative chemotaxis in pests is also acceptable). is housed in a portable small envelope 5 of an appropriate shape in the arrangement described later, and the gas is discharged to the outside through a vent hole 6 made in the envelope 5.

In detail, as shown in FIG.
A container 4 containing the is placed at the bottom of the envelope 5,
The oxidation catalyst-supporting ceramic 1 is placed above it. A cylindrical holder 8 is fixed inside the envelope 5,
The oxidation catalyst supporting ceramic 1 is placed in the holder 8.
The organic volatile agent 2 is inserted into the vertically parallel ventilation holes to capture its circumferential surface, and suspended so that one opening surface of the vertically parallel ventilation holes is on the lower side and the other opening surface is on the upper side.
The above-mentioned facing state with the suction wick 7 is obtained. That is, the suction wick 7 for the liquid organic volatile agent 2 is extended perpendicularly toward the center of the lower opening surface of the suspended oxidation catalyst-supporting ceramic 1, and its end surface is aligned with the center of the lower opening surface. make them confront each other.

As a result, the longitudinally elongated ventilation hole of the oxidation catalyst-supporting ceramic 1 and the suction wick 7 are arranged perpendicularly to each other, and the organic volatile agent 2 vaporized from the end surface of the suction wick is concentrated in the ventilation hole as an upward air current. The structure is such that it is taken in and flows through.

The holder 8 is made of a metal with good thermal conductivity, and the solid insecticide 3 processed into a cylindrical shape is tightly fitted into the holder 8, so that the heat of the oxidation catalyst-supporting ceramic 1 is transferred to the holder 8. The composition is such that the insecticide is efficiently absorbed into the insecticide 3 as a medium. Moreover, the above structure makes it easy to attach, detach and replace the insecticide 3.

As shown in FIG. 3, when the insecticide 3 is made into a tablet or mat shape, the holder 8 is divided into two stages, the upper stage houses the insecticide 3, and the lower stage holds the oxidation catalyst-supporting ceramic 1. They may be housed and brought into indirect contact between the two 1 and 3 with a metal partition 8a interposed therebetween.

As described above, the oxidation catalyst-supported ceramic 1 is arranged so that the openings of its ventilation holes are in the vertical direction, and the organic volatile gas flows in from the lower opening and passes through each of the vertically elongated ventilation holes. It flows through the opening and causes a contact reaction with the oxidation catalyst-supporting ceramic 1 over a wide area, causing it to generate heat to a high temperature.

The heat generated by the oxidation catalyst-supported ceramic 1 is absorbed by the solid insecticide 3 and gasified, and the gas is discharged to the outside through the vent holes 6 to achieve the purpose of exterminating pests.

The present invention can be effectively used to kill or repel mosquitoes and flies. It does not require a household power supply or a mat, and can be easily put to practical use regardless of the place of use or whether it is indoors or outdoors.

FIG. 4 and subsequent figures illustrate switching means for starting and stopping the thermal reaction.

FIGS. 4 and 5 show a disc-shaped switching valve 10 interposed between the vaporizing surface (exposed end surface of the suction wick 7 in the embodiment) and the oxidation catalyst-supporting ceramic 1, and the switching valve 10 being surrounded by A knob 11 placed on the outside of the container 5 can be used to rotate the container.

The switching valve 10 includes an oxidation catalyst supporting ceramic 1.
A through hole 1 containing a suction wick 7' that short-circuits the and vaporizing surface.
2 is bored, and the switch valve 10 is operated by the knob 11.
For example, when rotated by 90 degrees, the through hole 12 becomes vertical or horizontal, and when it becomes vertical (Fig. 4), the organic volatile agent 2
When it becomes possible to supply the oxidation catalyst supporting ceramic 1 in the horizontal direction, the supply is stopped. This allows the heat generation to be turned on and off.

Furthermore, FIGS. 4 and 5 are equipped with a type of thermostat mechanism. That is, as an example, the oxidation catalyst-supported ceramic 1 is supported by a bimetal 13, and when the temperature reaches an excessive temperature, the oxidation catalyst-supported ceramic 1 is reversed and lifted upward to cut off contact with the organic volatile agent 2. In this case, the oxidation catalyst supporting ceramic 1 is slid into the holder 8 so as to be vertically movable. Further, as shown in the figure, if the oxidation catalyst-supporting ceramic 1 is pressed down from above by the spring 14, which is weaker than the push-up force of the bimetal 13, the oxidation catalyst-supporting ceramic 1 will be pushed up by the bimetal 13 and the spring 1.
It moves up and down stably without wobbling while being supported between 4.

As another example, the oxidation catalyst-supporting ceramic 1 may be fixedly press-fitted into the holder 8, and the organic volatile agent container 4 may be moved in and out of the envelope 5. As another example, although not shown, a shutter mechanism may be provided on the lower surface of the oxidation catalyst-supporting ceramic 1 to perform the above-mentioned ON/OFF operation.

The heat source used as the heat source is a ceramic supporting an oxidation catalyst (in the example, a porous ceramic with a honeycomb structure supporting a platinum catalyst) 1 can obtain high temperature with a small block of 2 to 3 cm in diameter and about the same height, and the reaction is rapid. Yes, safe and harmless.

Methanol and alcohols suitable as the organic volatile agent 2 are also inexpensive and can be used in either liquid or solid form, and since a small amount is sufficient for the reaction, they can be used for a long period of time in a small container.

The present invention provides an extremely small pest control system with high heat efficiency by incorporating the above-mentioned oxidation catalyst-supporting ceramic 1, organic volatile agent 2, and solid insecticide 3 into the envelope 5 in the arrangement as described above. The vessel can be configured.

As mentioned above, in a pest exterminator using this type of catalyst, the problem is how to efficiently generate heat from a small ceramic supporting an oxidation catalyst using a limited amount of organic volatile agent and without causing excess or deficiency of heat amount. The issue in commercialization was whether it could be done.

Accordingly, the present invention provides a method for constructing a pest exterminator using the above-mentioned oxidation catalyst-supported ceramic as a heat source.
An oxidation catalyst-supporting ceramic having a porous structure having a large number of vertically elongated and mutually parallel ventilation holes is used, and the circumferential surface of the oxidation catalyst-supporting ceramic is captured with a metal holder so that one opening surface of the ventilation holes faces downward and the other opening faces downward. It is suspended in the envelope with the surface facing upward, and the suction wick for the liquid organic volatile agent is extended vertically toward the center of the lower opening surface of the ceramic supporting the oxidation catalyst. The core end face is installed facing the lower opening face, and the solid insecticide is held in the metal holder, so that the holder functions as a carrier for the oxidation catalyst-supporting ceramic and the solid insecticide, and as a heat transfer medium. This, in combination with the air extraction effect of the vertically long vent holes in the oxidation catalyst-supported ceramic, makes it possible to constantly supply and flow an appropriate amount of volatile agent from the lower opening surface of the oxidation catalyst-supported ceramic into the vent holes. , it is possible to efficiently supply the volatile agent with just the right amount and to carry out the exothermic reaction.

In other words, the above configuration promotes the upward flow of the volatile agent, ensuring that the volatile agent is captured by the oxidation catalyst-supported ceramic, and the above-mentioned efficient reaction is carried out, and therefore, the unreacted volatile agent that is not captured remains raw. The disadvantage of being released outside the envelope can also be effectively prevented. In addition, due to the arrangement of the wick, the volatile agent impregnated into the wick can actively induce and promote vaporization from the end surface of the wick as the oxidation catalyst-supporting ceramic generates heat. , the above effects are further enhanced.

At the same time, as described above, the present invention captures the circumferential surface of the oxidation catalyst-supported ceramic with a metal holder and suspends it so that it faces the suction core. This effectively eliminates the occurrence of heat generation dead points (non-heat generation parts), and together with the above effects, it effectively solves the problems of heat generation efficiency, insufficient heat quantity, and reactivity that are issues in commercialization. It is.

Further, in the present invention, the metal holder can capture the circumferential surface of the oxidation catalyst-supporting ceramic and receive heat conduction more efficiently from the circumferential surface, and
By holding the solid insecticide in the metal holder, the conductive heat can be efficiently absorbed, the gasification reaction can be rapidly promoted, and the limited amount of heat can be effectively used as reaction heat.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a pest exterminator according to an embodiment of the present invention, Fig. 2 is a perspective view of ceramic supporting an oxidation catalyst used in the pest exterminator, and Fig. 3 is a sectional view showing another example of the holder part. , Figure 4 A shows heat generation ON and OFF.
FIG. 5 is a cross-sectional view of the pest exterminator illustrating the mechanism; FIG. 1... Ceramic supporting oxidation catalyst, 2... Organic volatile agent, 3... Solid insecticide, 4... Container, 5... Envelope, 6... Ventilation hole, 7, 7'... Suction wick, 8
……holder.

Claims (1)

[Claims] 1 Using ceramic supporting an oxidation catalyst with a porous structure having a large number of vertically long and mutually parallel ventilation holes,
The peripheral surface of the oxidation catalyst-supported ceramic is captured by a metal holder and suspended in an envelope so that one opening surface of the vent is at the bottom and the other opening surface is at the top,
A suction wick for the liquid organic volatile agent is vertically extended toward the center of the lower opening surface of the oxidation catalyst-supporting ceramic, and the end surface of the wick is placed facing the lower opening surface, and the suction wick is placed in the metal holder. A pest exterminator characterized by containing a solid insecticide.