JPH11103749A - Volatilization of insect pest controlling ingredient - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for volatilizing an insect pest controlling ingredient by which the amount of volatilization of the insect pest controlling ingredient per unit time can be made the optimal one according to the use environment and the effective volatilization of the insect pest controlling ingredient can be kept for a long period. SOLUTION: The rotation frequency of a motor 15 for driving a fan of an air blast mechanism 13 is controlled on the basis of a signal from an infrared sensor to thereby regulate the air flow rate and wind pressure of an air stream to which a chemical holding material 12 is exposed so that the amount of volatilization of the insect controlling ingredient per unit time may be the optimal amount according to the atmospheric temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for volatilizing a pest controlling component, wherein the pest controlling component is volatilized by applying an air current to the drug holding material. It relates to a method for maintaining volatilization for a long time.

[0002]

2. Description of the Related Art Conventionally, as a volatilization device for pest control components,
By hitting the airflow from the blowing mechanism to the medicine holding material,
It is known to volatilize pest control components held by a drug holding material.

[0003]

However, in the above-described conventional volatilization apparatus for pest controlling components, the amount of volatilization of the pest controlling components is adjusted only by the on / off function of the switch of the blower mechanism. For this reason, depending on the use environment such as the temperature or the size of the use space, there is a problem that the pest control component is volatilized unnecessarily. So, consequently,
There is a problem that the pest control component disappears in a period shorter than the normal effective period.

Further, since the air blowing mechanism is operated unnecessarily, the power of the air blowing mechanism is wastefully consumed. This is also a problem from the viewpoint of power saving when a general commercial power supply is used as a power supply for the blower mechanism.
This is a problem especially when a battery is used as a power source.

According to the present invention, the volatilization amount of the pest control component per unit time can be set to an optimum amount according to the use environment, whereby the effective volatilization of the pest control component can be maintained for a long period of time. It is an object of the present invention to provide a method for volatilizing a pest control component which can be performed.

[0006]

An object of the present invention is to provide a method for volatilizing a pest control component, wherein the pest control component held in the drug holding material is volatilized by irradiating the drug holding material with airflow from a blowing means. By controlling the blowing means according to the use environment, so that the amount of volatilization of the pest control component per unit time is an optimal amount according to the use environment,
This is achieved by adjusting the airflow condition that hits the drug holding material.

[0007] The pest control component that can be used in the present invention may be any compound that is difficult to volatilize at room temperature. From the viewpoint of safety, it is preferable to use a pyrethroid compound and its isomers and analogs. Examples are as follows. Dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl dl-cis / trans-chrysanthemate (generic name arelesline: trade name pinamine: manufactured by Sumitomo Chemical Co., Ltd.) dl-3-allyl -2-Methyl-4-oxo-2-cyclopentenyl d-cis / trans-chrysanthemate (trade name: Pinamine Forte: manufactured by Sumitomo Chemical Co., Ltd.) dl-3-allyl-2-methyl-4-oxo -2-cyclopentenyl d-trans-chrysanthemate (trade name: bioathrelin: manufactured by Yukuraf Co., Ltd.) d-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate ( Trade name Extrin: manufactured by Sumitomo Chemical Co., Ltd., trade name: Svirol: manufactured by Yukuraf Co., Ltd.) (5-benzyl-3-furyl) methyl d-si / Trans-chrysanthemate (generic name resmethrin: trade name Chrislon Forte: manufactured by Sumitomo Chemical Co., Ltd.) 5-Propagyl-2-furylmethyl-d-cis / trans-chrysanthemate (generic name flametrin: trade name Pinamine D Forte: manufactured by Sumitomo Chemical Co., Ltd.) (+)-2-methyl-4-oxo-3- (2-propynyl) -2-cyclopentenyl (+)-cis / trans-chrysanthemate (generic name) Praletrin, trade name ETOK: manufactured by Sumitomo Chemical Co., Ltd.) dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl-dl-cis / trans-2,2,3,
3-tetramethylcyclopropane carboxylate (general name terarethrine: manufactured by Sumitomo Chemical Co., Ltd.) (1,3,4,5,6,7-hexahydro-1,3-
Dioxo-2-isoindolyl) methyl-dl-cis /
Trans-chrysanthemate (general name: phthalthrine, trade name: neopinamine: manufactured by Sumitomo Chemical Co., Ltd.)-(1,3,4,5,6,7-hexahydro-1,3-
Dioxo-2-isoindolyl) methyl-d-cis / trans-chrysanthemate (brand name neopinamine forte: manufactured by Sumitomo Chemical Co., Ltd.) 3-Phenoxybenzyl-d-cis / trans-chrysanthemate (generic name) Phenothrin, trade name Smithrin: manufactured by Sumitomo Chemical Co., Ltd.) 3-Phenoxybenzyl-dl-cis / trans-3
-(2,2-dichlorovinyl) -2,2-dimethyl-1
-Cyclopropanecarboxylate (generic name: permethrin, trade name: Exmin: manufactured by Sumitomo Chemical Co., Ltd.)-(±) α-cyano-3-phenoxybenzyl (+)-
Cis / trans-chrysanthemate (generic name cyphenothrin, trade name gokilate: manufactured by Sumitomo Chemical Co., Ltd.) 1-ethynyl-2-methyl-2-pentenyl dl-
Cis / trans-3- (2,2-dimethylvinyl)-
2,2-dimethyl-1-cyclopropanecarboxylate (generic name empentrin, trade name vaporthrin: manufactured by Sumitomo Chemical Co., Ltd.) d-trans-2,3,5,6-tetrafluorobenzyl-3- (2 , 2-Dichlorovinyl) -2,2-dimethyl-1-cyclopropanecarboxylate (generic name transfluthrin)

As the insect-controlling component, a compound similar in structure to the above compound can be used as an analog of the above. For example, in the case of empentrin, the two substituents at the 3-position are methyl groups. And compounds having another alkyl group, unsaturated alkyl group or halogen atom as a substituent thereof. In the present invention, one or more kinds of pest control components selected from these can be used by being held in a drug holding material.

[0009] Among these, empentrin, prarethrin, resmethrin, esviol, framethrin,
Teraresulin and transfluthrin are particularly preferred. Furthermore, there is no particular limitation on the use of pest control components such as organophosphorus, carbamate, and insect growth inhibitors (IGR, JH) under the above conditions alone or in combination. These analogs are also used.

Further, when applying a medicine to a medicine holding material,
Additives that lower the viscosity of liquid drugs for the purpose of easily impregnating the drug into the drug holding material, such as fatty acid esters such as isopropyl myristate, isopropyl palmitate, and hexyl laurate, isopropyl alcohol, polyethylene glycol, and deodorized kerosene Can be used if necessary.

The amount of the above-mentioned pest controlling component and / or various kinds of drugs to be held in the drug holding material is not particularly limited. For example, when the above-mentioned drugs (such as pest controlling components) are contained in an oil-absorbing material (for example, paper). Contains 50 chemicals in the oil absorbing material.
mg / g to 1000 mg / g, preferably 10
The range is from 0 mg / g to 700 mg / g. This amount can be maintained up to the saturated impregnation amount with reference to a volatilization amount of at least 0.1 mg / hr.

Although the form, material, size and the like of the medicine holding material can be arbitrarily set, those having a simple structure and high air permeability are preferable. For example, honeycomb shape, net shape,
It may have a slit shape, a lattice shape, or a structure such as paper provided with openings. The drug holding material is preferably one that can sufficiently retain the pest control component. Examples of the material include an inorganic or organic molding material. Examples of those molded from inorganic or organic substances include papers (filter paper, pulp, linter, cardboard, etc.), resins (polyethylene, polypropylene, polyvinyl chloride, highly oil-absorbing polymers, etc.), ceramics, glass fibers, carbon fibers , Chemical fibers (polyester, nylon, acrylic, vinylon, polyethylene, polypropylene, etc.), natural fibers (cotton, silk, wool, hemp, etc.), glass fibers, carbon fibers, chemical fibers, non-woven fabrics and the like made of natural fibers, etc. Cotton,
Examples include a porous glass material, a porous metal material, and a wire mesh.

The drug holding material may hold a drug containing a pest controlling component, and may be used alone or in combination of two or more in an arbitrary shape. In order to hold the pest control component etc. on the drug holding material, the drug is applied to the drug holding material by a liquid coating method such as drop coating, impregnation coating, spray coating, liquid printing, brush coating or the like, or affixed to the drug holding material. A method of attaching is available. Furthermore, when the composition to be used is not liquid or when no solvent is used, methods such as kneading, coating, printing and the like can be applied.

The amount of the insect-controlling ingredient retained in the drug holding material is usually up to the saturated impregnation amount of the drug holding material.
By separately connecting a supply container to the medicine holding material, the amount can be substantially increased. Adjusting the airflow condition applied to the drug holding material so that the amount of the pest control component volatilized per unit time is an optimal amount according to the use environment means that, for example, according to the temperature, the size of the use space, etc. This means adjusting the air volume and pressure. The adjustment according to the temperature may be, for example, adjustment based on the season, day and night, or the like.

In the method for volatilizing a pest controlling component according to the present invention, the pest controlling component held by the drug holding material is volatilized by irradiating an airflow from a blowing means to the drug holding material. At this time, by controlling the air blowing means according to the use environment, the airflow condition applied to the medicine holding material is adjusted so that the amount of the pest control component volatilized per unit time becomes an optimum amount according to the use environment.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic sectional view showing a pest control apparatus to which a method for volatilizing a pest control component according to a first embodiment of the present invention is applied. In FIG. 1, a pest control device 10
1, the airflow from the blower mechanism 13 is applied to the medicine holding material 12 provided at the upper end portion in FIG. 1 in the chamber 11 to volatilize the pest control component held by the medicine holding material 12 out of the chamber 11. .

The blowing mechanism 13 discharges the outside air sucked into the chamber 11 by the rotation of the fan 14 against the medicine holding material 12 and out of the chamber 11. That is, the blowing mechanism 1
3 sucks outside air from an intake port 16 provided on the lower surface in FIG. 1 of the chamber 11 by rotation of a fan 14 driven by a fan driving motor 15, and causes an upward airflow in FIG. 1 into the chamber 11. Cause. The air flow accompanying the rotation of the fan 14 hits the medicine holding material 12 and the medicine holding material 12
Is discharged out of the chamber 11 through an exhaust port 17 provided on the upper surface of the chamber 11 in FIG. Thereby, the pest control component is volatilized to the outside.

The fan 14 comprises a plurality of inclined blades, each of which is connected to a rotating shaft 1 of a fan driving motor 15.
8 is fixed radially. In other words, the fan 14 and the fan drive motor 15 constitute a so-called axial-flow blower 13. In addition, as a specific example of the blower mechanism, although not shown, a so-called multi-blade type in which a large number of blades are provided in a cylindrical shape in a direction parallel to the rotation axis of the fan drive motor and air is blown in a direction orthogonal to the rotation axis. An air blowing mechanism (sirocco fan) may be used.

The fan driving motor 15 uses the dry battery 20 housed in the battery housing 19 as a power source to rotate the rotating shaft 1.
8 to rotate the fan 14 fixed to the rotating shaft 18. Instead of the dry battery 20, a commercial power source for general household use, a solar battery, a storage battery, or a rechargeable dry battery can also be used. The pest control device 10 controls the rotation speed of the fan drive motor 15 of the blower mechanism 13 and adjusts the rotation speed of the fan 14 based on a signal from an infrared sensor (not shown). Thereby, the air volume and the air pressure of the airflow in the chamber 11 that hits the medicine holding material 12 are adjusted so that the volatilization amount of the pest control component per unit time becomes an optimum amount according to the temperature.

The operation of the present embodiment will be described. In the pest control device 10, the airflow from the air blowing mechanism 13 is applied to the medicine holding material 12 in the chamber 11, and the pest control component held in the medicine holding material 12 is volatilized out of the chamber 11 by the airflow. . At this time, the pest control device 10
By controlling the number of revolutions of the fan drive motor 15 of the blower mechanism 13 based on a signal from the infrared sensor, the amount of volatilization of the pest control component per unit time becomes an optimal amount according to the temperature. Then, the air volume and the air pressure of the airflow hitting the medicine holding material 12 are adjusted.

FIG. 2 is a graph showing a change in the volatilization amount of the pest control component with respect to a change in the outside temperature of the pest control apparatus of FIG. In this figure, the thin solid line indicates the volatilization amount of the pest control component by the pest control device 10 of FIG. 1, and the broken line indicates the volatilization amount of the pest control component when the fan drive motor of the blower mechanism is not controlled. Is shown. In each pest control device, the medicine holding material was honeycomb-shaped paper (cardboard) having a length of 66 mm × width 66 mm × thickness of 15 mm. In addition, transfluthrin is used as a pest control component, and 100 mg / g to 70 mg / g is used as a drug holding material.
It was contained in the range of 0 mg / g.

The number of revolutions of the fan drive motor 15 of the pest control apparatus 10 shown in FIG. 1 decreases stepwise in inverse proportion to the rise in the outside air temperature, as indicated by the thick solid line in FIG. That is, assuming that the rotation speed at an outside air temperature of 26 ° C. or less is 100%,
About 83% at 26 ° C, about 64% at 28 ° C, 30 ° C
Then, it is reduced to about 50%. Accordingly, the volatilization amount of the pest control component by the pest control device 10 decreases by about 40% every time the temperature rises from 26 ° C. by 1 ° C. as shown by a thin solid line in FIG. That is, the volatilization amount of the pest control component by the pest control device 10 is maintained within a predetermined range in the range of the outside air temperature of 26 ° C. to 30 ° C., although there is some fluctuation.

On the other hand, when the fan drive motor of the blower mechanism is not controlled, the volatilization amount of the pest control component increases linearly with an increase in outside air temperature, as indicated by a broken line in FIG.
The amount of volatilization, which was about 120% at an outside air temperature of 26 ° C., has increased to about 200% at an outside air temperature of 30 ° C. From these facts, it is understood that the pest control device 10 of FIG. 1 significantly reduces unnecessary volatilization of the pest control components as compared with the pest control device in which the fan driving motor of the blower mechanism is not controlled.

Next, a pest control apparatus to which a volatilization method according to another embodiment (second to eighth embodiments) of the method for volatilizing pest control components of the present invention will be described.

As a pest control device to which the volatilization method of the second embodiment is applied, a thermometer (not shown) is provided instead of the infrared sensor of the first embodiment, and the temperature is automatically detected by a temperature display scale of the thermometer. The fan drive motor 15 of the blower mechanism 13 may be configured to switch to continuous operation or intermittent operation based on the detected value. In the second embodiment, the configuration and operation other than those described above are the same as those in the first embodiment.

As a pest control device to which the volatilization method of the third embodiment is applied, instead of the infrared sensor of the first embodiment,
Visually check the thermometer (not shown) and the indicated value of the thermometer,
Temperature display dial (not shown) that can be switched manually
Is provided. Then, by switching the temperature display dial,
You may comprise so that the rotation speed of the fan drive motor 15 of the blowing mechanism 13 may be controlled.

In the third embodiment, the configuration and operation other than those described above are the same as those in the first embodiment.

As a pest control device to which the volatilization method of the fourth embodiment is applied, instead of the infrared sensor of the first embodiment,
Thermometer (not shown) and temperature display dial (not shown) that can be manually switched by visually checking the indicated value of the thermometer
And an opening shutter (not shown) capable of adjusting the opening area of the opening is provided at each of the intake port 16 and the exhaust port 17 of the chamber 11. Then, by switching the temperature display dial, the rotation speed of the fan drive motor 15 and the opening degree of the opening shutters of the intake port 16 and the exhaust port 17 may be controlled.

In the fourth embodiment, the configuration and operation other than those described above are the same as those in the first embodiment.

As a pest control device to which the volatilization method of the fifth embodiment is applied, a temperature sensor (not shown) is provided instead of the infrared sensor of the first embodiment, and a chamber 1 is provided.
An opening shutter (not shown) capable of adjusting the opening area of the opening is provided at each of the intake port 16 and the exhaust port 17. The temperature sensor may automatically detect the air temperature, and the opening degree of the opening shutters of the intake port 16 and the exhaust port 17 may be controlled based on the detected value.

In the fifth embodiment, the configuration and operation other than those described above are the same as those in the first embodiment.

As a pest control device to which the volatilization method of the sixth embodiment is applied, instead of the infrared sensor of the first embodiment,
An opening shutter (not shown) capable of adjusting the opening area of each opening is provided at each of the intake port 16 and the exhaust port 17 of the chamber 11 while providing a space display dial which can be manually switched by visually checking the size of the used space. Provide. Then, the opening degree of the opening shutters of the intake port 16 and the exhaust port 17 may be controlled by switching the space display dial.

In the sixth embodiment, the configuration and operation other than those described above are the same as those in the first embodiment.

As a pest control device to which the volatilization method of the seventh embodiment is applied, instead of the space display dial of the sixth embodiment, a season display dial which is manually switched according to the season (for example, spring, summer, autumn and winter) is provided. The opening degree of the opening shutter of the intake port 16 and the exhaust port 17 may be controlled by switching the season display dial. In the seventh embodiment, the configuration and operation other than those described above are the same as those in the sixth embodiment.

As a pest control device to which the volatilization method of the eighth embodiment is applied, a day / night display dial which is manually switched according to day and night is provided in place of the space display dial of the sixth embodiment, and the day / night display dial is switched. Thus, the opening degree of the opening shutter of the intake port 16 and the exhaust port 17 may be controlled. In the eighth embodiment,
The configuration and operation other than those described above are the same as those in the sixth embodiment.

As described above, according to the first to third embodiments, the number of rotations of the fan driving motor 15 of the blower mechanism 13 is controlled by the infrared sensor (first embodiment) and the thermometer (second embodiment). Alternatively, by controlling based on the signal from the temperature display dial (third embodiment), the airflow hitting the medicine holding material 12 is controlled so that the volatilization amount of the pest control component per unit time becomes the optimum amount according to the temperature. Adjust the air volume and pressure.

Further, according to the fourth embodiment, the blowing mechanism 13
By controlling the number of rotations of the fan drive motor 15 and the opening degree of the opening shutters of the intake port 16 and the exhaust port 17 of the chamber 11 based on a signal from the temperature display dial, the pest control component per unit time is controlled. The air volume and pressure of the airflow impinging on the medicine holding material 12 are adjusted so that the volatilization amount of the air becomes the optimum amount according to the temperature.

Further, according to the fifth to eighth embodiments, the degree of opening of the opening shutters of the intake port 16 and the exhaust port 17 of the chamber 11 is determined by the temperature sensor (fifth embodiment) and the space display dial (sixth embodiment). Form), the seasonal display dial (seventh embodiment) or the day / night display dial (eighth embodiment) is controlled based on a signal, so that the volatilization amount of the pest control component per unit time becomes the temperature and the size of the used space. Then, the medicine holding material 1 is adjusted so as to be an optimal amount according to the season or day or night.
2. Adjust the air volume and pressure of the airflow corresponding to 2.

Therefore, the volatilization amount of the pest control component per unit time is determined by the temperature (first to fifth embodiments), the size of the used space (sixth embodiment), the season (seventh embodiment), or the daytime or nighttime. The optimum amount can be set according to another (eighth embodiment), and unnecessary volatilization of the pest control component can be eliminated as much as possible. Further, unnecessary rotation of the fan drive motor 15 can be prevented to save power, and the life of the dry battery 20 can be extended.

This makes it possible to maintain the effective volatilization of the pest control component for a long period of time. In other words, an effective amount according to the use environment of the pest control component can be volatilized for a long period of time, and the problem that the pest control component disappears in a shorter period than the normal effective period can be reliably prevented. Can be prevented.

In each of the above embodiments, the medicine holding material 12
Is disposed on the exhaust side of the fan 14 of the blowing mechanism 13, but may be configured as a so-called suction type in which the medicine holding material 12 is disposed on the intake side of the fan 14 of the blowing mechanism 13. In addition, examples of the fan type of the blowing mechanism 13 include a rotary, a sirocco, and a piezo, and a compressor or the like can be used instead of the fan 14.

[0042]

As described above, according to the present invention, by controlling the blowing means in accordance with the use environment, the volatilization amount of the pest control component per unit time can be set to an optimum amount in accordance with the use environment. Adjust the airflow condition that hits the medicine holding material. Therefore, the volatilization amount of the pest control component per unit time can be set to an optimum amount according to the use environment. Thereby, the effective volatilization of the pest controlling component can be maintained for a long period of time.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a pest control apparatus to which a method for volatilizing a pest control component according to a first embodiment of the present invention is applied.

FIG. 2 is a graph showing a change in a volatilization amount of a pest control component with respect to a change in an outside temperature of the pest control device of FIG. 1;

DESCRIPTION OF SYMBOLS 10 Pest control device 11 Chamber 12 Drug holding material 13 Blowing means (blowing mechanism) 14 Blowing means (fan) 15 Blowing means (fan drive motor) 16 Blowing means (suction port) 17 Blowing means (exhaust port) 18) Blowing means (rotary shaft of fan drive motor)

Claims (1)

[Claims] An air blowing means (13 to 10) is provided on a medicine holding material (12).
18), the medicine holding material (1)
In the volatilization method of the pest control component for volatilizing the pest control component held in 2), the volatilization amount of the pest control component per unit time is controlled by controlling the blowing means (13 to 18) according to the use environment. A method for volatilizing a pest-controlling component, comprising adjusting an airflow condition corresponding to a drug holding material (12) so as to have an optimum amount according to a use environment.